diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..e212547ee
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+*.out
+*.out_py3
+*.pyc
+*.pyo
+v4-cokapi/node_modules/
+v4-cokapi/backends/javascript/node_modules/
+v4-cokapi/feedback/cokapi-feedback.db
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 000000000..e69de29bb
diff --git a/README b/README
index fb3591837..194ba3511 100644
--- a/README
+++ b/README
@@ -1,137 +1,248 @@
-Online Python Tutor
-Copyright (C) 2010 Philip J. Guo (philip@pgbovine.net)
-https://github.com/pgbovine/OnlinePythonTutor/
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-======
-Introduction:
-
-The Online Python Tutor is a web application where you can type Python
-scripts directly into your web browser, execute those scripts, and
-single-step FORWARDS AND BACKWARDS through execution in order to view
-the run-time state of all data structures.
+Online Python Tutor -- http://pythontutor.com/ -- helps people overcome
+a fundamental barrier to learning programming: understanding what
+happens as the computer executes each line of a program's source code.
+Using this tool, you can write Python, Java, JavaScript, TypeScript,
+Ruby, C, and C++ programs in your Web browser and visualize what the
+computer is doing step-by-step as it executes those programs.
 
-Using this tool, teachers and students can write small Python code
-snippets together and see what happens to the data structures when the
-code gets executed.
+All documentation is viewable online at:
+https://github.com/pgbovine/OnlinePythonTutor/tree/master/v3/docs
 
-Try it out live at: http://www.onlinepythontutor.com/
+https://github.com/pgbovine/OnlinePythonTutor/
+The v3/ sub-directory contains the latest version of the frontend code.
 
 ======
-System architecture overview:
-
-The Online Python Tutor is implemented as a web application, with a
-JavaScript front-end making AJAX calls to a pure-Python back-end.
-
-The back-end has been tested on an Apache server running Python 2.5
-through CGI.  Note that it will probably fail in subtle ways on other
-Python 2.X (and will DEFINITELY fail on Python 3.X).  Peter Wentworth
-has create a port to Python 3.X, and hopefully we can eventually
-integrate his code into my repository.
-
-
-The front-end is HTML/JavaScript (using the jQuery library).  It's
-responsible for the input text box, submitting the Python code (as
-plaintext) to the back-end, receiving an execution trace from the
-back-end, and then rendering that trace as data structure
-visualizations.  The front-end code resides in these files in the
-current directory:
-
-  tutor.html
-  question.html
-  edu-python.js
-  edu-python-tutor.js
-  edu-python-questions.js
-  edu-python.css
-  jquery.textarea.js
-  .htaccess - to increase the size of allowed Apache HTTP responses
-
-  (there are also other 3rd-party JavaScript library files)
 
-Note on .htaccess: If your server limits the size of responses received
-from HTTP requests, then you might need to use the following .htaccess
-file included in your top-level (front-end) directory, to allow the
-Online Python Tutor to receive traces from the back-end:
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
 
-<IfModule mod_security.c>
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
 
-# Set a ~2MB limit for response headers (bigger than default 512K limit)
-SecResponseBodyLimit 2000000
-
-</IfModule>
-
-
-The back-end is a server-side CGI application that takes Python script
-source code as input, executes the entire script (up to 200 executed
-lines, to prevent infinite loops), and collects a full trace of all
-variable values (i.e., data structures) after each line has been
-executed.  It then sends that full trace to the front-end in a
-specially-encoded JSON format.  The front-end then parses and visualizes
-that trace and allows the user to single-step forwards AND backwards
-through execution.
-
-The back-end resides in the cgi-bin/ sub-directory in this repository:
-
-  cgi-bin/web_exec.py     - the CGI entrance point to the back-end
-  cgi-bin/web_run_test.py - the CGI entrance point to the question
-                            grading back-end
-  cgi-bin/pg_logger.py    - the 'meat' of the back-end
-  cgi-bin/pg_encoder.py   - encodes Python data into JSON
-  cgi-bin/demjson.py      - 3rd-party JSON module, since Python 2.5
-                            doesn't have the built-in 'import json'
-  cgi-bin/create_db.py    - for optional sqlite query logging
-  cgi-bin/db_common.py    - for optional sqlite query logging
-  cgi-bin/.htaccess       - for Apache CGI execute permissions
-
-
-Due to the AJAX same-origin policy, the front-end and back-end must be
-deployed on the same server (unless you do some fancy proxy magic).
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 ======
-Original founding vision (from January 2010):
-
-I want to create a web-based interactive learning platform for students
-to explore programming.  I envision an HTML UI where a student can enter
-in code and then single-step through it and see how the data structures
-change during execution.
-
-Key insight: I realized that for the small programs that teachers and
-students write for educational purposes, it's possible to simply LOG
-everything that happens to data structures during execution.  Then we
-can simply play back that log in the front-end, which allows
-single-stepping forwards and also BACKWARDS.
-
-After all, we don't need students to be able to interactive probe and
-make changes in the middle of execution, which is the only value-added
-of a REAL debugger.
-
-What kinds of things do we want to log?
-
-  On the execution of each line, log:
-    - the line number just executed
-    - all data created by the program
-
-  Also log calls and returns of a student's function 
-  (but NOT library functions)
 
-We can use the Python JSON module to encode data structures in JSON and
-send it to the client's web browser
+Project history:
 
-The PDB debugger (Lib/pdb.py) is written in pure Python:
-  http://docs.python.org/library/pdb.html
-  - the bdb debugger framework is the C module that pdb calls
-    http://docs.python.org/library/bdb.html
+v1-v2/
 
+  [Project created in December 2009; I first wanted to make a JavaScript
+  run-time visualizer for education since it could all be in-browser,
+  but then realized that I couldn't easily hook into the JS debugger in
+  the browser to do single-stepping without making the user install
+  plug-ins; then I switched to a server-side solution and picked Python
+  as the target language. That turned out to be a wise choice in
+  hindsight since Python was poised to really take off as a CS1 language
+  in both traditional courses and MOOCs, starting around 2011.]
+
+  Online Python Tutor version 1 - released on January 19, 2010
+  "Release" email to 15 friends:
+
+  Subject: version 0.0000001alpha of my online Python tutor
+  Body:
+  '''
+  hi python fans (and non-fans) ...
+
+  this is what i've been hacking on for the past few days instead of
+  doing my research ;)  i'm planning to use it as a platform for
+  creating interactive online programming tutorials as part of a
+  volunteer project ...
+
+  http://python.pgrind.com/
+
+  it'd be great to get your feedback on what i have so far.  i'd love
+  to hear suggestions or complaints.  thanks in advance!
+
+  please don't share this link yet, mostly because my app is still
+  buggy and insecure (i definitely don't want random peoples from the
+  internet trying to hack it right now!)
+
+  pg
+  '''
+
+  [From Jan 2010 until Aug 2011, v1 was deployed online on my personal
+  and MIT servers, and it barely had any users. From a technical
+  standpoint, it rendered all data structures as HTML tables and had no
+  pointers, so aliased data were duplicated. It was a proof-of-concept
+  side project that I had fun hacking on and showing off to people.]
+
+  [In Sep-Oct 2011, I majorly brushed up OPT into v2 since a few power
+  users started using it more seriously and making feature requests
+  (e.g., Brad Miller, Suzanne Rivoire, Peter Wentworth), and
+  Python-based MOOCs were also just starting to take off ...]
+
+  Online Python Tutor version 2 - released on October 4, 2011
+  "Release" email to 13 friends:
+
+  Subject: Re: version 0.0000001alpha of my online Python tutor
+  Body:
+  '''
+  Dear subset of people who cared about my prior email from almost 2
+  years ago ...
+
+  I've recently kicked it up a notch with a "2.0" version and am about
+  to do a public release soon.  I'd really appreciate any feedback,
+  criticism, and especially bug reports on Internet Explorer ;)
+
+  http://people.csail.mit.edu/pgbovine/opt-prerelease/
+
+  Please don't share the link yet since it will be dead soon when I
+  move this app to its permanent home.  I just want to get some early
+  feedback to eliminate the obviously embarrassing bugs before launch.
+
+  THANKS!
+
+  pg
+  '''
+
+  [From Oct 2011 until Sep 2012, v2 was deployed online and launched as
+  www.onlinepythontutor.com. The biggest technical advance over v1 was
+  the use of pointers (rather than duplicating objects with identical
+  object IDs) to better visualize aliasing. However, pointers could
+  point only from names to objects (i.e., from within a frame to the
+  heap); heap-to-heap pointers weren't implemented yet. During this time
+  period, MOOCs started taking off, and the usage of Python Tutor grew
+  organically.]
+
+
+v3/
+
+  [In July-Sep 2012, I made a giant push to release v3, working closely
+  with John DeNero and others at Google and beyond ... awesome times!]
+
+  Online Python Tutor version 3 - Released on September 18, 2012
+  to 153,000+ people who followed the official Research@Google Google+
+  account: https://plus.google.com/+ResearchatGoogle/posts/cseo9qi7LWq
+
+  "Release" announcement from the Research @ Google G+ account:
+  '''
+  Online Python Tutor: Web-Based Program Visualization for CS Education
+
+  As part of his CS education work at Google, +Philip Guo has been
+  developing an open-source educational tool called Online Python Tutor
+  (http://www.pythontutor.com). This tool enables teachers and students
+  to write Python programs directly in the web browser and then
+  single-step forwards and backwards to visualize what the computer is
+  doing as it executes those programs.
+
+  Program visualization for CS education is nothing new -- researchers
+  have been developing these sorts of tools for decades. However, most
+  of these tools never reach far beyond the confines of the researchers'
+  home universities due to the difficulty of installing and configuring
+  the visualization software. What makes Online Python Tutor unique and
+  effective is that it's the first known tool to adapt time-tested ideas
+  from the research literature (e.g., rendering of box-and-pointer
+  diagrams) for a web-based environment. Now anyone with a modern
+  browser can create, explore, and share their program visualizations by
+  simply visiting a web URL.
+
+  This ease of access has been a major contributor to adoption: So far,
+  over 100,000 people have used Online Python Tutor to understand and
+  debug their programs, often as a supplement to learning from
+  textbooks, lecture notes, and online programming tutorials. In
+  addition, instructors in over a dozen universities such as MIT, UC
+  Berkeley, and the University of Washington have used it for teaching
+  introductory computer science courses.
+
+  But this is just the beginning. Philip and his colleagues are now
+  building an online authoring environment so that, within the next few
+  months, teachers and students will be able to save their code snippets
+  and add annotations, discussion threads, lessons, and interactive
+  exercises on top of the associated visualizations.
+
+  They are also actively seeking partnerships with educators at all
+  grade levels to deploy and improve Online Python Tutor. Please contact
+  Philip directly or re-share this post with educators who might be
+  interested in working with this tool in any capacity.
+
+  Visit www.pythontutor.com to learn more and to start visualizing your
+  Python programs now!
+  '''
+
+  [This official publicity provided a big initial PUSH that spurred
+  worldwide usage of the tool, and it kept growing organically from
+  there thanks to momentum and also MOOCs and other online learning
+  resources quickly rising in popularity around 2012-2013.]
+
+  [The biggest advance of v3 over v2 was more sophisticated pointer
+  visualizations and layout, including heap-to-heap pointers. Another
+  major advance is that each visualizer instance is now encapsulated
+  into a self-contained JavaScript object; thus, multiple visualizers
+  can now be embedded within a single web page. (in v1 and v2, only a
+  single visualizer could be displayed on a given page, since there was
+  no encapsulation; all state was global, eek!) Also, all state is
+  encapsulated in a simple URL, so that it's easily sharable or
+  iframe-embeddable, which is very useful! v3 also marked the launch of
+  the crisper pythontutor.com domain rather than the older and more
+  clunky www.onlinepythontutor.com domain used for v2. In mid-2014, the
+  "shared sessions" feature (a.k.a. Codechella) was launched onto the
+  site, which enables multiple users to simultaneously join a shared
+  session. During the period of v3, this tool experienced a significant
+  growth in user numbers to well beyond 1 million users and 10 million
+  visualized pieces of code!]
+
+
+v4-cokapi/
+
+  2015-01-24 - started a new version (based on v3 code base) to expand
+  Online Python Tutor to support multiple languages such as JavaScript
+  and Java. Note that this contains only backend code, so we still rely
+  on v3/ for the frontend (and the original Python backend)
+
+  [v4 was purely a backend advancement; the v3 code is still used for
+  the frontend. By the end of 2015, six new languages had been added:
+  Java (from David Pritchard's backend), JavaScript, TypeScript, Ruby,
+  C, and C++. In short, 2015 was the year of adding new languages to
+  expand this tool's scope beyond just Python and hopefully making it
+  into a more generally-useful tool in the coming years.]
+
+---
+Contributor acknowledgments:
+
+John DeNero - for helping with the official Python 3 port and LOTS of code patches
+Chris Horne - https://github.com/lahwran - for security tips
+Joshua Landau - joshua@landau.ws - for security tips
+Peter Wentworth and his students - for working on the original Python 3 fork circa 2011
+Brad Miller - for adding pop-up question dialogs to visualizations, and other bug fixes
+David Pritchard and Will Gwozdz - for the Java frontend and other frontend enhancements
+Peter Robinson - for v3/make_visualizations.py
+Chris Meyers - for custom visualizations such as v3/matrix.py and v3/htmlFrame.py
+Irene Chen - for holistic visualization mode -- v3/js/holistic.js
+
+
+For advice and feedback from an instructor's perspective:
+
+Jennifer Campbell
+John Dalbey
+John DeNero
+Fredo Durand
+Michael Ernst
+David Evans
+Paul Gries
+Adam Hartz
+Tomas Lozano-Perez
+Bertram Ludaescher
+Brad Miller
+Rob Miller
+Peter Norvig
+Andrew Petersen
+David Pritchard
+Suzanne Rivoire
+Peter Wentworth
+David Wilkins
+
+... and many, many more!
diff --git a/cgi-bin/demjson.py b/cgi-bin/demjson.py
deleted file mode 100644
index a513ee134..000000000
--- a/cgi-bin/demjson.py
+++ /dev/null
@@ -1,2138 +0,0 @@
-#!/usr/bin/env python
-# -*- coding: utf-8 -*-
-#
-r""" A JSON data encoder and decoder.
-
- This Python module implements the JSON (http://json.org/) data
- encoding format; a subset of ECMAScript (aka JavaScript) for encoding
- primitive data types (numbers, strings, booleans, lists, and
- associative arrays) in a language-neutral simple text-based syntax.
- 
- It can encode or decode between JSON formatted strings and native
- Python data types.  Normally you would use the encode() and decode()
- functions defined by this module, but if you want more control over
- the processing you can use the JSON class.
-
- This implementation tries to be as completely cormforming to all
- intricacies of the standards as possible.  It can operate in strict
- mode (which only allows JSON-compliant syntax) or a non-strict mode
- (which allows much more of the whole ECMAScript permitted syntax).
- This includes complete support for Unicode strings (including
- surrogate-pairs for non-BMP characters), and all number formats
- including negative zero and IEEE 754 non-numbers such a NaN or
- Infinity.
-
- The JSON/ECMAScript to Python type mappings are:
-    ---JSON---             ---Python---
-    null                   None
-    undefined              undefined  (note 1)
-    Boolean (true,false)   bool  (True or False)
-    Integer                int or long  (note 2)
-    Float                  float
-    String                 str or unicode  ( "..." or u"..." )
-    Array [a, ...]         list  ( [...] )
-    Object {a:b, ...}      dict  ( {...} )
-    
-    -- Note 1. an 'undefined' object is declared in this module which
-       represents the native Python value for this type when in
-       non-strict mode.
-
-    -- Note 2. some ECMAScript integers may be up-converted to Python
-       floats, such as 1e+40.  Also integer -0 is converted to
-       float -0, so as to preserve the sign (which ECMAScript requires).
-
- In addition, when operating in non-strict mode, several IEEE 754
- non-numbers are also handled, and are mapped to specific Python
- objects declared in this module:
-
-     NaN (not a number)     nan    (float('nan'))
-     Infinity, +Infinity    inf    (float('inf'))
-     -Infinity              neginf (float('-inf'))
-
- When encoding Python objects into JSON, you may use types other than
- native lists or dictionaries, as long as they support the minimal
- interfaces required of all sequences or mappings.  This means you can
- use generators and iterators, tuples, UserDict subclasses, etc.
-
- To make it easier to produce JSON encoded representations of user
- defined classes, if the object has a method named json_equivalent(),
- then it will call that method and attempt to encode the object
- returned from it instead.  It will do this recursively as needed and
- before any attempt to encode the object using it's default
- strategies.  Note that any json_equivalent() method should return
- "equivalent" Python objects to be encoded, not an already-encoded
- JSON-formatted string.  There is no such aid provided to decode
- JSON back into user-defined classes as that would dramatically
- complicate the interface.
- 
- When decoding strings with this module it may operate in either
- strict or non-strict mode.  The strict mode only allows syntax which
- is conforming to RFC 4627 (JSON), while the non-strict allows much
- more of the permissible ECMAScript syntax.
-
- The following are permitted when processing in NON-STRICT mode:
-
-    * Unicode format control characters are allowed anywhere in the input.
-    * All Unicode line terminator characters are recognized.
-    * All Unicode white space characters are recognized.
-    * The 'undefined' keyword is recognized.
-    * Hexadecimal number literals are recognized (e.g., 0xA6, 0177).
-    * String literals may use either single or double quote marks.
-    * Strings may contain \x (hexadecimal) escape sequences, as well as the
-      \v and \0 escape sequences.
-    * Lists may have omitted (elided) elements, e.g., [,,,,,], with
-      missing elements interpreted as 'undefined' values.
-    * Object properties (dictionary keys) can be of any of the
-      types: string literals, numbers, or identifiers (the later of
-      which are treated as if they are string literals)---as permitted
-      by ECMAScript.  JSON only permits strings literals as keys.
-
- Concerning non-strict and non-ECMAScript allowances:
-
-    * Octal numbers: If you allow the 'octal_numbers' behavior (which
-      is never enabled by default), then you can use octal integers
-      and octal character escape sequences (per the ECMAScript
-      standard Annex B.1.2).  This behavior is allowed, if enabled,
-      because it was valid JavaScript at one time.
-
-    * Multi-line string literals:  Strings which are more than one
-      line long (contain embedded raw newline characters) are never
-      permitted. This is neither valid JSON nor ECMAScript.  Some other
-      JSON implementations may allow this, but this module considers
-      that behavior to be a mistake.
-
- References:
-    * JSON (JavaScript Object Notation)
-      <http://json.org/>
-    * RFC 4627. The application/json Media Type for JavaScript Object Notation (JSON)
-      <http://www.ietf.org/rfc/rfc4627.txt>
-    * ECMA-262 3rd edition (1999)
-      <http://www.ecma-international.org/publications/files/ecma-st/ECMA-262.pdf>
-    * IEEE 754-1985: Standard for Binary Floating-Point Arithmetic.
-      <http://www.cs.berkeley.edu/~ejr/Projects/ieee754/>
-    
-"""
-
-__author__ = "Deron Meranda <http://deron.meranda.us/>"
-__date__ = "2008-12-17"
-__version__ = "1.4"
-__credits__ = """Copyright (c) 2006-2008 Deron E. Meranda <http://deron.meranda.us/>
-Licensed under GNU LGPL 3.0 (GNU Lesser General Public License) or
-later.  See LICENSE.txt included with this software.
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as
-published by the Free Software Foundation, either version 3 of the
-License, or (at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>
-or <http://www.fsf.org/licensing/>.
-
-"""
-
-# ------------------------------
-# useful global constants
-
-content_type = 'application/json'
-file_ext = 'json'
-hexdigits = '0123456789ABCDEFabcdef'
-octaldigits = '01234567'
-
-# ----------------------------------------------------------------------
-# Decimal and float types.
-#
-# If a JSON number can not be stored in a Python float without loosing
-# precision and the Python has the decimal type, then we will try to
-# use decimal instead of float.  To make this determination we need to
-# know the limits of the float type, but Python doesn't have an easy
-# way to tell what the largest floating-point number it supports.  So,
-# we detemine the precision and scale of the float type by testing it.
-
-try:
-    # decimal module was introduced in Python 2.4
-    import decimal
-except ImportError:
-    decimal = None
-
-def determine_float_precision():
-    """Returns a tuple (significant_digits, max_exponent) for the float type.
-    """
-    import math
-    # Just count the digits in pi.  The last two decimal digits
-    # may only be partial digits, so discount for them.
-    whole, frac = repr(math.pi).split('.')
-    sigdigits = len(whole) + len(frac) - 2
-
-    # This is a simple binary search.  We find the largest exponent
-    # that the float() type can handle without going infinite or
-    # raising errors.
-    maxexp = None
-    minv = 0; maxv = 1000
-    while True:
-        if minv+1 == maxv:
-            maxexp = minv - 1
-            break
-        elif maxv < minv:
-            maxexp = None
-            break
-        m = (minv + maxv) // 2
-        try:
-            f = repr(float( '1e+%d' % m ))
-        except ValueError:
-            f = None
-        else:
-            if not f or f[0] < '0' or f[0] > '9':
-                f = None
-        if not f:
-            # infinite
-            maxv = m
-        else:
-            minv = m
-    return sigdigits, maxexp
-
-float_sigdigits, float_maxexp = determine_float_precision()
-
-# ----------------------------------------------------------------------
-# The undefined value.
-#
-# ECMAScript has an undefined value (similar to yet distinct from null).
-# Neither Python or strict JSON have support undefined, but to allow
-# JavaScript behavior we must simulate it.
-
-class _undefined_class(object):
-    """Represents the ECMAScript 'undefined' value."""
-    __slots__ = []
-    def __repr__(self):
-        return self.__module__ + '.undefined'
-    def __str__(self):
-        return 'undefined'
-    def __nonzero__(self):
-        return False
-undefined = _undefined_class()
-del _undefined_class
-
-
-# ----------------------------------------------------------------------
-# Non-Numbers: NaN, Infinity, -Infinity
-#
-# ECMAScript has official support for non-number floats, although
-# strict JSON does not.  Python doesn't either.  So to support the
-# full JavaScript behavior we must try to add them into Python, which
-# is unfortunately a bit of black magic.  If our python implementation
-# happens to be built on top of IEEE 754 we can probably trick python
-# into using real floats.  Otherwise we must simulate it with classes.
-
-def _nonnumber_float_constants():
-    """Try to return the Nan, Infinity, and -Infinity float values.
-    
-    This is unnecessarily complex because there is no standard
-    platform- independent way to do this in Python as the language
-    (opposed to some implementation of it) doesn't discuss
-    non-numbers.  We try various strategies from the best to the
-    worst.
-    
-    If this Python interpreter uses the IEEE 754 floating point
-    standard then the returned values will probably be real instances
-    of the 'float' type.  Otherwise a custom class object is returned
-    which will attempt to simulate the correct behavior as much as
-    possible.
-
-    """
-    try:
-        # First, try (mostly portable) float constructor.  Works under
-        # Linux x86 (gcc) and some Unices.
-        nan = float('nan')
-        inf = float('inf')
-        neginf = float('-inf')
-    except ValueError:
-        try:
-            # Try the AIX (PowerPC) float constructors
-            nan = float('NaNQ')
-            inf = float('INF')
-            neginf = float('-INF')
-        except ValueError:
-            try:
-                # Next, try binary unpacking.  Should work under
-                # platforms using IEEE 754 floating point.
-                import struct, sys
-                xnan = '7ff8000000000000'.decode('hex')  # Quiet NaN
-                xinf = '7ff0000000000000'.decode('hex')
-                xcheck = 'bdc145651592979d'.decode('hex') # -3.14159e-11
-                # Could use float.__getformat__, but it is a new python feature,
-                # so we use sys.byteorder.
-                if sys.byteorder == 'big':
-                    nan = struct.unpack('d', xnan)[0]
-                    inf = struct.unpack('d', xinf)[0]
-                    check = struct.unpack('d', xcheck)[0]
-                else:
-                    nan = struct.unpack('d', xnan[::-1])[0]
-                    inf = struct.unpack('d', xinf[::-1])[0]
-                    check = struct.unpack('d', xcheck[::-1])[0]
-                neginf = - inf
-                if check != -3.14159e-11:
-                    raise ValueError('Unpacking raw IEEE 754 floats does not work')
-            except (ValueError, TypeError):
-                # Punt, make some fake classes to simulate.  These are
-                # not perfect though.  For instance nan * 1.0 == nan,
-                # as expected, but 1.0 * nan == 0.0, which is wrong.
-                class nan(float):
-                    """An approximation of the NaN (not a number) floating point number."""
-                    def __repr__(self): return 'nan'
-                    def __str__(self): return 'nan'
-                    def __add__(self,x): return self
-                    def __radd__(self,x): return self
-                    def __sub__(self,x): return self
-                    def __rsub__(self,x): return self
-                    def __mul__(self,x): return self
-                    def __rmul__(self,x): return self
-                    def __div__(self,x): return self
-                    def __rdiv__(self,x): return self
-                    def __divmod__(self,x): return (self,self)
-                    def __rdivmod__(self,x): return (self,self)
-                    def __mod__(self,x): return self
-                    def __rmod__(self,x): return self
-                    def __pow__(self,exp): return self
-                    def __rpow__(self,exp): return self
-                    def __neg__(self): return self
-                    def __pos__(self): return self
-                    def __abs__(self): return self
-                    def __lt__(self,x): return False
-                    def __le__(self,x): return False
-                    def __eq__(self,x): return False
-                    def __neq__(self,x): return True
-                    def __ge__(self,x): return False
-                    def __gt__(self,x): return False
-                    def __complex__(self,*a): raise NotImplementedError('NaN can not be converted to a complex')
-                if decimal:
-                    nan = decimal.Decimal('NaN')
-                else:
-                    nan = nan()
-                class inf(float):
-                    """An approximation of the +Infinity floating point number."""
-                    def __repr__(self): return 'inf'
-                    def __str__(self): return 'inf'
-                    def __add__(self,x): return self
-                    def __radd__(self,x): return self
-                    def __sub__(self,x): return self
-                    def __rsub__(self,x): return self
-                    def __mul__(self,x):
-                        if x is neginf or x < 0:
-                            return neginf
-                        elif x == 0:
-                            return nan
-                        else:
-                            return self
-                    def __rmul__(self,x): return self.__mul__(x)
-                    def __div__(self,x):
-                        if x == 0:
-                            raise ZeroDivisionError('float division')
-                        elif x < 0:
-                            return neginf
-                        else:
-                            return self
-                    def __rdiv__(self,x):
-                        if x is inf or x is neginf or x is nan:
-                            return nan
-                        return 0.0
-                    def __divmod__(self,x):
-                        if x == 0:
-                            raise ZeroDivisionError('float divmod()')
-                        elif x < 0:
-                            return (nan,nan)
-                        else:
-                            return (self,self)
-                    def __rdivmod__(self,x):
-                        if x is inf or x is neginf or x is nan:
-                            return (nan, nan)
-                        return (0.0, x)
-                    def __mod__(self,x):
-                        if x == 0:
-                            raise ZeroDivisionError('float modulo')
-                        else:
-                            return nan
-                    def __rmod__(self,x):
-                        if x is inf or x is neginf or x is nan:
-                            return nan
-                        return x
-                    def __pow__(self, exp):
-                        if exp == 0:
-                            return 1.0
-                        else:
-                            return self
-                    def __rpow__(self, x):
-                        if -1 < x < 1: return 0.0
-                        elif x == 1.0: return 1.0
-                        elif x is nan or x is neginf or x < 0:
-                            return nan
-                        else:
-                            return self
-                    def __neg__(self): return neginf
-                    def __pos__(self): return self
-                    def __abs__(self): return self
-                    def __lt__(self,x): return False
-                    def __le__(self,x):
-                        if x is self:
-                            return True
-                        else:
-                            return False
-                    def __eq__(self,x):
-                        if x is self:
-                            return True
-                        else:
-                            return False
-                    def __neq__(self,x):
-                        if x is self:
-                            return False
-                        else:
-                            return True
-                    def __ge__(self,x): return True
-                    def __gt__(self,x): return True
-                    def __complex__(self,*a): raise NotImplementedError('Infinity can not be converted to a complex')
-                if decimal:
-                    inf = decimal.Decimal('Infinity')
-                else:
-                    inf = inf()
-                class neginf(float):
-                    """An approximation of the -Infinity floating point number."""
-                    def __repr__(self): return '-inf'
-                    def __str__(self): return '-inf'
-                    def __add__(self,x): return self
-                    def __radd__(self,x): return self
-                    def __sub__(self,x): return self
-                    def __rsub__(self,x): return self
-                    def __mul__(self,x):
-                        if x is self or x < 0:
-                            return inf
-                        elif x == 0:
-                            return nan
-                        else:
-                            return self
-                    def __rmul__(self,x): return self.__mul__(self)
-                    def __div__(self,x):
-                        if x == 0:
-                            raise ZeroDivisionError('float division')
-                        elif x < 0:
-                            return inf
-                        else:
-                            return self
-                    def __rdiv__(self,x):
-                        if x is inf or x is neginf or x is nan:
-                            return nan
-                        return -0.0
-                    def __divmod__(self,x):
-                        if x == 0:
-                            raise ZeroDivisionError('float divmod()')
-                        elif x < 0:
-                            return (nan,nan)
-                        else:
-                            return (self,self)
-                    def __rdivmod__(self,x):
-                        if x is inf or x is neginf or x is nan:
-                            return (nan, nan)
-                        return (-0.0, x)
-                    def __mod__(self,x):
-                        if x == 0:
-                            raise ZeroDivisionError('float modulo')
-                        else:
-                            return nan
-                    def __rmod__(self,x):
-                        if x is inf or x is neginf or x is nan:
-                            return nan
-                        return x
-                    def __pow__(self,exp):
-                        if exp == 0:
-                            return 1.0
-                        else:
-                            return self
-                    def __rpow__(self, x):
-                        if x is nan or x is inf or x is inf:
-                            return nan
-                        return 0.0
-                    def __neg__(self): return inf
-                    def __pos__(self): return self
-                    def __abs__(self): return inf
-                    def __lt__(self,x): return True
-                    def __le__(self,x): return True
-                    def __eq__(self,x):
-                        if x is self:
-                            return True
-                        else:
-                            return False
-                    def __neq__(self,x):
-                        if x is self:
-                            return False
-                        else:
-                            return True
-                    def __ge__(self,x):
-                        if x is self:
-                            return True
-                        else:
-                            return False
-                    def __gt__(self,x): return False
-                    def __complex__(self,*a): raise NotImplementedError('-Infinity can not be converted to a complex')
-                if decimal:
-                    neginf = decimal.Decimal('-Infinity')
-                else:
-                    neginf = neginf(0)
-    return nan, inf, neginf
-
-nan, inf, neginf = _nonnumber_float_constants()
-del _nonnumber_float_constants
-
-
-# ----------------------------------------------------------------------
-# String processing helpers
-
-unsafe_string_chars = '"\\' + ''.join([chr(i) for i in range(0x20)])
-def skipstringsafe( s, start=0, end=None ):
-    i = start
-    #if end is None:
-    #    end = len(s)
-    while i < end and s[i] not in unsafe_string_chars:
-        #c = s[i]
-        #if c in unsafe_string_chars:
-        #    break
-        i += 1
-    return i
-def skipstringsafe_slow( s, start=0, end=None ):
-    i = start
-    if end is None:
-        end = len(s)
-    while i < end:
-        c = s[i]
-        if c == '"' or c == '\\' or ord(c) <= 0x1f:
-            break
-        i += 1
-    return i
-
-def extend_list_with_sep( orig_seq, extension_seq, sepchar='' ):
-    if not sepchar:
-        orig_seq.extend( extension_seq )
-    else:
-        for i, x in enumerate(extension_seq):
-            if i > 0:
-                orig_seq.append( sepchar )
-            orig_seq.append( x )
-
-def extend_and_flatten_list_with_sep( orig_seq, extension_seq, separator='' ):
-    for i, part in enumerate(extension_seq):
-        if i > 0 and separator:
-            orig_seq.append( separator )
-        orig_seq.extend( part )
-
-
-# ----------------------------------------------------------------------
-# Unicode helpers
-#
-# JSON requires that all JSON implementations must support the UTF-32
-# encoding (as well as UTF-8 and UTF-16).  But earlier versions of
-# Python did not provide a UTF-32 codec.  So we must implement UTF-32
-# ourselves in case we need it.
-
-def utf32le_encode( obj, errors='strict' ):
-    """Encodes a Unicode string into a UTF-32LE encoded byte string."""
-    import struct
-    try:
-        import cStringIO as sio
-    except ImportError:
-        import StringIO as sio
-    f = sio.StringIO()
-    write = f.write
-    pack = struct.pack
-    for c in obj:
-        n = ord(c)
-        if 0xD800 <= n <= 0xDFFF: # surrogate codepoints are prohibited by UTF-32
-            if errors == 'ignore':
-                continue
-            elif errors == 'replace':
-                n = ord('?')
-            else:
-                cname = 'U+%04X'%n
-                raise UnicodeError('UTF-32 can not encode surrogate characters',cname)
-        write( pack('<L', n) )
-    return f.getvalue()
-
-
-def utf32be_encode( obj, errors='strict' ):
-    """Encodes a Unicode string into a UTF-32BE encoded byte string."""
-    import struct
-    try:
-        import cStringIO as sio
-    except ImportError:
-        import StringIO as sio
-    f = sio.StringIO()
-    write = f.write
-    pack = struct.pack
-    for c in obj:
-        n = ord(c)
-        if 0xD800 <= n <= 0xDFFF: # surrogate codepoints are prohibited by UTF-32
-            if errors == 'ignore':
-                continue
-            elif errors == 'replace':
-                n = ord('?')
-            else:
-                cname = 'U+%04X'%n
-                raise UnicodeError('UTF-32 can not encode surrogate characters',cname)
-        write( pack('>L', n) )
-    return f.getvalue()
-
-
-def utf32le_decode( obj, errors='strict' ):
-    """Decodes a UTF-32LE byte string into a Unicode string."""
-    if len(obj) % 4 != 0:
-        raise UnicodeError('UTF-32 decode error, data length not a multiple of 4 bytes')
-    import struct
-    unpack = struct.unpack
-    chars = []
-    i = 0
-    for i in range(0, len(obj), 4):
-        seq = obj[i:i+4]
-        n = unpack('<L',seq)[0]
-        chars.append( unichr(n) )
-    return u''.join( chars )
-
-
-def utf32be_decode( obj, errors='strict' ):
-    """Decodes a UTF-32BE byte string into a Unicode string."""
-    if len(obj) % 4 != 0:
-        raise UnicodeError('UTF-32 decode error, data length not a multiple of 4 bytes')
-    import struct
-    unpack = struct.unpack
-    chars = []
-    i = 0
-    for i in range(0, len(obj), 4):
-        seq = obj[i:i+4]
-        n = unpack('>L',seq)[0]
-        chars.append( unichr(n) )
-    return u''.join( chars )
-
-
-def auto_unicode_decode( s ):
-    """Takes a string and tries to convert it to a Unicode string.
-
-    This will return a Python unicode string type corresponding to the
-    input string (either str or unicode).  The character encoding is
-    guessed by looking for either a Unicode BOM prefix, or by the
-    rules specified by RFC 4627.  When in doubt it is assumed the
-    input is encoded in UTF-8 (the default for JSON).
-
-    """
-    if isinstance(s, unicode):
-        return s
-    if len(s) < 4:
-        return s.decode('utf8')  # not enough bytes, assume default of utf-8
-    # Look for BOM marker
-    import codecs
-    bom2 = s[:2]
-    bom4 = s[:4]
-    a, b, c, d = map(ord, s[:4])  # values of first four bytes
-    if bom4 == codecs.BOM_UTF32_LE:
-        encoding = 'utf-32le'
-        s = s[4:]
-    elif bom4 == codecs.BOM_UTF32_BE:
-        encoding = 'utf-32be'
-        s = s[4:]
-    elif bom2 == codecs.BOM_UTF16_LE:
-        encoding = 'utf-16le'
-        s = s[2:]
-    elif bom2 == codecs.BOM_UTF16_BE:
-        encoding = 'utf-16be'
-        s = s[2:]
-    # No BOM, so autodetect encoding used by looking at first four bytes
-    # according to RFC 4627 section 3.
-    elif a==0 and b==0 and c==0 and d!=0: # UTF-32BE
-        encoding = 'utf-32be'
-    elif a==0 and b!=0 and c==0 and d!=0: # UTF-16BE
-        encoding = 'utf-16be'
-    elif a!=0 and b==0 and c==0 and d==0: # UTF-32LE
-        encoding = 'utf-32le'
-    elif a!=0 and b==0 and c!=0 and d==0: # UTF-16LE
-        encoding = 'utf-16le'
-    else: #if a!=0 and b!=0 and c!=0 and d!=0: # UTF-8
-        # JSON spec says default is UTF-8, so always guess it
-        # if we can't guess otherwise
-        encoding = 'utf8'
-    # Make sure the encoding is supported by Python
-    try:
-        cdk = codecs.lookup(encoding)
-    except LookupError:
-        if encoding.startswith('utf-32') \
-               or encoding.startswith('ucs4') \
-               or encoding.startswith('ucs-4'):
-            # Python doesn't natively have a UTF-32 codec, but JSON
-            # requires that it be supported.  So we must decode these
-            # manually.
-            if encoding.endswith('le'):
-                unis = utf32le_decode(s)
-            else:
-                unis = utf32be_decode(s)
-        else:
-            raise JSONDecodeError('this python has no codec for this character encoding',encoding)
-    else:
-        # Convert to unicode using a standard codec
-        unis = s.decode(encoding)
-    return unis
-
-
-def surrogate_pair_as_unicode( c1, c2 ):
-    """Takes a pair of unicode surrogates and returns the equivalent unicode character.
-
-    The input pair must be a surrogate pair, with c1 in the range
-    U+D800 to U+DBFF and c2 in the range U+DC00 to U+DFFF.
-
-    """
-    n1, n2 = ord(c1), ord(c2)
-    if n1 < 0xD800 or n1 > 0xDBFF or n2 < 0xDC00 or n2 > 0xDFFF:
-        raise JSONDecodeError('illegal Unicode surrogate pair',(c1,c2))
-    a = n1 - 0xD800
-    b = n2 - 0xDC00
-    v = (a << 10) | b
-    v += 0x10000
-    return unichr(v)
-
-
-def unicode_as_surrogate_pair( c ):
-    """Takes a single unicode character and returns a sequence of surrogate pairs.
-
-    The output of this function is a tuple consisting of one or two unicode
-    characters, such that if the input character is outside the BMP range
-    then the output is a two-character surrogate pair representing that character.
-
-    If the input character is inside the BMP then the output tuple will have
-    just a single character...the same one.
-
-    """
-    n = ord(c)
-    if n < 0x10000:
-        return (unichr(n),)  # in BMP, surrogate pair not required
-    v = n - 0x10000
-    vh = (v >> 10) & 0x3ff   # highest 10 bits
-    vl = v & 0x3ff  # lowest 10 bits
-    w1 = 0xD800 | vh
-    w2 = 0xDC00 | vl
-    return (unichr(w1), unichr(w2))
-
-
-# ----------------------------------------------------------------------
-# Type identification
-
-def isnumbertype( obj ):
-    """Is the object of a Python number type (excluding complex)?"""
-    return isinstance(obj, (int,long,float)) \
-           and not isinstance(obj, bool) \
-           or obj is nan or obj is inf or obj is neginf
-
-
-def isstringtype( obj ):
-    """Is the object of a Python string type?"""
-    if isinstance(obj, basestring):
-        return True
-    # Must also check for some other pseudo-string types
-    import types, UserString
-    return isinstance(obj, types.StringTypes) \
-           or isinstance(obj, UserString.UserString) \
-           or isinstance(obj, UserString.MutableString)
-
-
-# ----------------------------------------------------------------------
-# Numeric helpers
-
-def decode_hex( hexstring ):
-    """Decodes a hexadecimal string into it's integer value."""
-    # We don't use the builtin 'hex' codec in python since it can
-    # not handle odd numbers of digits, nor raise the same type
-    # of exceptions we want to.
-    n = 0
-    for c in hexstring:
-        if '0' <= c <= '9':
-            d = ord(c) - ord('0')
-        elif 'a' <= c <= 'f':
-            d = ord(c) - ord('a') + 10
-        elif 'A' <= c <= 'F':
-            d = ord(c) - ord('A') + 10
-        else:
-            raise JSONDecodeError('not a hexadecimal number',hexstring)
-        # Could use ((n << 4 ) | d), but python 2.3 issues a FutureWarning.
-        n = (n * 16) + d
-    return n
-
-
-def decode_octal( octalstring ):
-    """Decodes an octal string into it's integer value."""
-    n = 0
-    for c in octalstring:
-        if '0' <= c <= '7':
-            d = ord(c) - ord('0')
-        else:
-            raise JSONDecodeError('not an octal number',octalstring)
-        # Could use ((n << 3 ) | d), but python 2.3 issues a FutureWarning.
-        n = (n * 8) + d
-    return n
-
-
-# ----------------------------------------------------------------------
-# Exception classes.
-
-class JSONError(ValueError):
-    """Our base class for all JSON-related errors.
-
-    """
-    def pretty_description(self):
-        err = self.args[0]
-        if len(self.args) > 1:
-            err += ': '
-            for anum, a in enumerate(self.args[1:]):
-                if anum > 1:
-                    err += ', '
-                astr = repr(a)
-                if len(astr) > 20:
-                    astr = astr[:20] + '...'
-                err += astr
-        return err
-
-class JSONDecodeError(JSONError):
-    """An exception class raised when a JSON decoding error (syntax error) occurs."""
-
-
-class JSONEncodeError(JSONError):
-    """An exception class raised when a python object can not be encoded as a JSON string."""
-
-
-#----------------------------------------------------------------------
-# The main JSON encoder/decoder class.
-
-class JSON(object):
-    """An encoder/decoder for JSON data streams.
-
-    Usually you will call the encode() or decode() methods.  The other
-    methods are for lower-level processing.
-
-    Whether the JSON parser runs in strict mode (which enforces exact
-    compliance with the JSON spec) or the more forgiving non-string mode
-    can be affected by setting the 'strict' argument in the object's
-    initialization; or by assigning True or False to the 'strict'
-    property of the object.
-
-    You can also adjust a finer-grained control over strictness by
-    allowing or preventing specific behaviors.  You can get a list of
-    all the available behaviors by accessing the 'behaviors' property.
-    Likewise the allowed_behaviors and prevented_behaviors list which
-    behaviors will be allowed and which will not.  Call the allow()
-    or prevent() methods to adjust these.
-    
-    """
-    _escapes_json = { # character escapes in JSON
-        '"': '"',
-        '/': '/',
-        '\\': '\\',
-        'b': '\b',
-        'f': '\f',
-        'n': '\n',
-        'r': '\r',
-        't': '\t',
-        }
-
-    _escapes_js = { # character escapes in Javascript
-        '"': '"',
-        '\'': '\'',
-        '\\': '\\',
-        'b': '\b',
-        'f': '\f',
-        'n': '\n',
-        'r': '\r',
-        't': '\t',
-        'v': '\v',
-        '0': '\x00'
-        }
-
-    # Following is a reverse mapping of escape characters, used when we
-    # output JSON.  Only those escapes which are always safe (e.g., in JSON)
-    # are here.  It won't hurt if we leave questionable ones out.
-    _rev_escapes = {'\n': '\\n',
-                    '\t': '\\t',
-                    '\b': '\\b',
-                    '\r': '\\r',
-                    '\f': '\\f',
-                    '"': '\\"',
-                    '\\': '\\\\'}
-
-    def __init__(self, strict=False, compactly=True, escape_unicode=False):
-        """Creates a JSON encoder/decoder object.
-        
-        If 'strict' is set to True, then only strictly-conforming JSON
-        output will be produced.  Note that this means that some types
-        of values may not be convertable and will result in a
-        JSONEncodeError exception.
-        
-        If 'compactly' is set to True, then the resulting string will
-        have all extraneous white space removed; if False then the
-        string will be "pretty printed" with whitespace and indentation
-        added to make it more readable.
-        
-        If 'escape_unicode' is set to True, then all non-ASCII characters
-        will be represented as a unicode escape sequence; if False then
-        the actual real unicode character will be inserted if possible.
-
-        The 'escape_unicode' can also be a function, which when called
-        with a single argument of a unicode character will return True
-        if the character should be escaped or False if it should not.
-        
-        If you wish to extend the encoding to ba able to handle
-        additional types, you should subclass this class and override
-        the encode_default() method.
-        
-        """
-        import sys
-        self._set_strictness(strict)
-        self._encode_compactly = compactly
-        try:
-            # see if we were passed a predicate function
-            b = escape_unicode(u'A')
-            self._encode_unicode_as_escapes = escape_unicode
-        except (ValueError, NameError, TypeError):
-            # Just set to True or False.  We could use lambda x:True
-            # to make it more consistent (always a function), but it
-            # will be too slow, so we'll make explicit tests later.
-            self._encode_unicode_as_escapes = bool(escape_unicode)
-        self._sort_dictionary_keys = True
-
-        # The following is a boolean map of the first 256 characters
-        # which will quickly tell us which of those characters never
-        # need to be escaped.
-
-        self._asciiencodable = [32 <= c < 128 and not self._rev_escapes.has_key(chr(c))
-                              for c in range(0,255)]
-
-    def _set_strictness(self, strict):
-        """Changes the strictness behavior.
-
-        Pass True to be very strict about JSON syntax, or False to be looser.
-        """
-        self._allow_any_type_at_start = not strict
-        self._allow_all_numeric_signs = not strict
-        self._allow_comments = not strict
-        self._allow_control_char_in_string = not strict
-        self._allow_hex_numbers = not strict
-        self._allow_initial_decimal_point = not strict
-        self._allow_js_string_escapes = not strict
-        self._allow_non_numbers = not strict
-        self._allow_nonescape_characters = not strict  # "\z" -> "z"
-        self._allow_nonstring_keys = not strict
-        self._allow_omitted_array_elements = not strict
-        self._allow_single_quoted_strings = not strict
-        self._allow_trailing_comma_in_literal = not strict
-        self._allow_undefined_values = not strict
-        self._allow_unicode_format_control_chars = not strict
-        self._allow_unicode_whitespace = not strict
-        # Always disable this by default
-        self._allow_octal_numbers = False
-
-    def allow(self, behavior):
-        """Allow the specified behavior (turn off a strictness check).
-
-        The list of all possible behaviors is available in the behaviors property.
-        You can see which behaviors are currently allowed by accessing the
-        allowed_behaviors property.
-
-        """
-        p = '_allow_' + behavior
-        if hasattr(self, p):
-            setattr(self, p, True)
-        else:
-            raise AttributeError('Behavior is not known',behavior)
-
-    def prevent(self, behavior):
-        """Prevent the specified behavior (turn on a strictness check).
-
-        The list of all possible behaviors is available in the behaviors property.
-        You can see which behaviors are currently prevented by accessing the
-        prevented_behaviors property.
-
-        """
-        p = '_allow_' + behavior
-        if hasattr(self, p):
-            setattr(self, p, False)
-        else:
-            raise AttributeError('Behavior is not known',behavior)
-
-    def _get_behaviors(self):
-        return sorted([ n[len('_allow_'):] for n in self.__dict__ \
-                        if n.startswith('_allow_')])
-    behaviors = property(_get_behaviors,
-                         doc='List of known behaviors that can be passed to allow() or prevent() methods')
-
-    def _get_allowed_behaviors(self):
-        return sorted([ n[len('_allow_'):] for n in self.__dict__ \
-                        if n.startswith('_allow_') and getattr(self,n)])
-    allowed_behaviors = property(_get_allowed_behaviors,
-                                 doc='List of known behaviors that are currently allowed')
-
-    def _get_prevented_behaviors(self):
-        return sorted([ n[len('_allow_'):] for n in self.__dict__ \
-                        if n.startswith('_allow_') and not getattr(self,n)])
-    prevented_behaviors = property(_get_prevented_behaviors,
-                                   doc='List of known behaviors that are currently prevented')
-
-    def _is_strict(self):
-        return not self.allowed_behaviors
-    strict = property(_is_strict, _set_strictness,
-                      doc='True if adherence to RFC 4627 syntax is strict, or False is more generous ECMAScript syntax is permitted')
-
-
-    def isws(self, c):
-        """Determines if the given character is considered as white space.
-        
-        Note that Javscript is much more permissive on what it considers
-        to be whitespace than does JSON.
-        
-        Ref. ECMAScript section 7.2
-
-        """
-        if not self._allow_unicode_whitespace:
-            return c in ' \t\n\r'
-        else:
-            if not isinstance(c,unicode):
-                c = unicode(c)
-            if c in u' \t\n\r\f\v':
-                return True
-            import unicodedata
-            return unicodedata.category(c) == 'Zs'
-
-    def islineterm(self, c):
-        """Determines if the given character is considered a line terminator.
-
-        Ref. ECMAScript section 7.3
-
-        """
-        if c == '\r' or c == '\n':
-            return True
-        if c == u'\u2028' or c == u'\u2029': # unicodedata.category(c) in  ['Zl', 'Zp']
-            return True
-        return False
-
-    def strip_format_control_chars(self, txt):
-        """Filters out all Unicode format control characters from the string.
-
-        ECMAScript permits any Unicode "format control characters" to
-        appear at any place in the source code.  They are to be
-        ignored as if they are not there before any other lexical
-        tokenization occurs.  Note that JSON does not allow them.
-
-        Ref. ECMAScript section 7.1.
-
-        """
-        import unicodedata
-        txt2 = filter( lambda c: unicodedata.category(unicode(c)) != 'Cf',
-                       txt )
-        return txt2
-
-
-    def decode_null(self, s, i=0):
-        """Intermediate-level decoder for ECMAScript 'null' keyword.
-
-        Takes a string and a starting index, and returns a Python
-        None object and the index of the next unparsed character.
-
-        """
-        if i < len(s) and s[i:i+4] == 'null':
-            return None, i+4
-        raise JSONDecodeError('literal is not the JSON "null" keyword', s)
-
-    def encode_undefined(self):
-        """Produces the ECMAScript 'undefined' keyword."""
-        return 'undefined'
-
-    def encode_null(self):
-        """Produces the JSON 'null' keyword."""
-        return 'null'
-
-    def decode_boolean(self, s, i=0):
-        """Intermediate-level decode for JSON boolean literals.
-
-        Takes a string and a starting index, and returns a Python bool
-        (True or False) and the index of the next unparsed character.
-
-        """
-        if s[i:i+4] == 'true':
-            return True, i+4
-        elif s[i:i+5] == 'false':
-            return False, i+5
-        raise JSONDecodeError('literal value is not a JSON boolean keyword',s)
-
-    def encode_boolean(self, b):
-        """Encodes the Python boolean into a JSON Boolean literal."""
-        if bool(b):
-            return 'true'
-        return 'false'
-
-    def decode_number(self, s, i=0, imax=None):
-        """Intermediate-level decoder for JSON numeric literals.
-
-        Takes a string and a starting index, and returns a Python
-        suitable numeric type and the index of the next unparsed character.
-
-        The returned numeric type can be either of a Python int,
-        long, or float.  In addition some special non-numbers may
-        also be returned such as nan, inf, and neginf (technically
-        which are Python floats, but have no numeric value.)
-
-        Ref. ECMAScript section 8.5.
-
-        """
-        if imax is None:
-            imax = len(s)
-        # Detect initial sign character(s)
-        if not self._allow_all_numeric_signs:
-            if s[i] == '+' or (s[i] == '-' and i+1 < imax and \
-                               s[i+1] in '+-'):
-                raise JSONDecodeError('numbers in strict JSON may only have a single "-" as a sign prefix',s[i:])
-        sign = +1
-        j = i  # j will point after the sign prefix
-        while j < imax and s[j] in '+-':
-            if s[j] == '-': sign = sign * -1
-            j += 1
-        # Check for ECMAScript symbolic non-numbers
-        if s[j:j+3] == 'NaN':
-            if self._allow_non_numbers:
-                return nan, j+3
-            else:
-                raise JSONDecodeError('NaN literals are not allowed in strict JSON')
-        elif s[j:j+8] == 'Infinity':
-            if self._allow_non_numbers:
-                if sign < 0:
-                    return neginf, j+8
-                else:
-                    return inf, j+8
-            else:
-                raise JSONDecodeError('Infinity literals are not allowed in strict JSON')
-        elif s[j:j+2] in ('0x','0X'):
-            if self._allow_hex_numbers:
-                k = j+2
-                while k < imax and s[k] in hexdigits:
-                    k += 1
-                n = sign * decode_hex( s[j+2:k] )
-                return n, k
-            else:
-                raise JSONDecodeError('hexadecimal literals are not allowed in strict JSON',s[i:])
-        else:
-            # Decimal (or octal) number, find end of number.
-            # General syntax is:  \d+[\.\d+][e[+-]?\d+]
-            k = j   # will point to end of digit sequence
-            could_be_octal = ( k+1 < imax and s[k] == '0' )  # first digit is 0
-            decpt = None  # index into number of the decimal point, if any
-            ept = None # index into number of the e|E exponent start, if any
-            esign = '+' # sign of exponent
-            sigdigits = 0 # number of significant digits (approx, counts end zeros)
-            while k < imax and (s[k].isdigit() or s[k] in '.+-eE'):
-                c = s[k]
-                if c not in octaldigits:
-                    could_be_octal = False
-                if c == '.':
-                    if decpt is not None or ept is not None:
-                        break
-                    else:
-                        decpt = k-j
-                elif c in 'eE':
-                    if ept is not None:
-                        break
-                    else:
-                        ept = k-j
-                elif c in '+-':
-                    if not ept:
-                        break
-                    esign = c
-                else: #digit
-                    if not ept:
-                        sigdigits += 1
-                k += 1
-            number = s[j:k]  # The entire number as a string
-            #print 'NUMBER IS: ', repr(number), ', sign', sign, ', esign', esign, \
-            #      ', sigdigits', sigdigits, \
-            #      ', decpt', decpt, ', ept', ept
-
-            # Handle octal integers first as an exception.  If octal
-            # is not enabled (the ECMAScipt standard) then just do
-            # nothing and treat the string as a decimal number.
-            if could_be_octal and self._allow_octal_numbers:
-                n = sign * decode_octal( number )
-                return n, k
-
-            # A decimal number.  Do a quick check on JSON syntax restrictions.
-            if number[0] == '.' and not self._allow_initial_decimal_point:
-                raise JSONDecodeError('numbers in strict JSON must have at least one digit before the decimal point',s[i:])
-            elif number[0] == '0' and \
-                     len(number) > 1 and number[1].isdigit():
-                if self._allow_octal_numbers:
-                    raise JSONDecodeError('initial zero digit is only allowed for octal integers',s[i:])
-                else:
-                    raise JSONDecodeError('initial zero digit must not be followed by other digits (octal numbers are not permitted)',s[i:])
-            # Make sure decimal point is followed by a digit
-            if decpt is not None:
-                if decpt+1 >= len(number) or not number[decpt+1].isdigit():
-                    raise JSONDecodeError('decimal point must be followed by at least one digit',s[i:])
-            # Determine the exponential part
-            if ept is not None:
-                if ept+1 >= len(number):
-                    raise JSONDecodeError('exponent in number is truncated',s[i:])
-                try:
-                    exponent = int(number[ept+1:])
-                except ValueError:
-                    raise JSONDecodeError('not a valid exponent in number',s[i:])
-                ##print 'EXPONENT', exponent
-            else:
-                exponent = 0
-            # Try to make an int/long first.
-            if decpt is None and exponent >= 0:
-                # An integer
-                if ept:
-                    n = int(number[:ept])
-                else:
-                    n = int(number)
-                n *= sign
-                if exponent:
-                    n *= 10**exponent
-                if n == 0 and sign < 0:
-                    # minus zero, must preserve negative sign so make a float
-                    n = -0.0
-            else:
-                try:
-                    if decimal and (abs(exponent) > float_maxexp or sigdigits > float_sigdigits):
-                        try:
-                            n = decimal.Decimal(number)
-                            n = n.normalize()
-                        except decimal.Overflow:
-                            if sign<0:
-                                n = neginf
-                            else:
-                                n = inf
-                        else:
-                            n *= sign
-                    else:
-                        n = float(number) * sign
-                except ValueError:
-                    raise JSONDecodeError('not a valid JSON numeric literal', s[i:j])
-            return n, k
-
-    def encode_number(self, n):
-        """Encodes a Python numeric type into a JSON numeric literal.
-        
-        The special non-numeric values of float('nan'), float('inf')
-        and float('-inf') are translated into appropriate JSON
-        literals.
-        
-        Note that Python complex types are not handled, as there is no
-        ECMAScript equivalent type.
-        
-        """
-        if isinstance(n, complex):
-            if n.imag:
-                raise JSONEncodeError('Can not encode a complex number that has a non-zero imaginary part',n)
-            n = n.real
-        if isinstance(n, (int,long)):
-            return str(n)
-        if decimal and isinstance(n, decimal.Decimal):
-            return str(n)
-        global nan, inf, neginf
-        if n is nan:
-            return 'NaN'
-        elif n is inf:
-            return 'Infinity'
-        elif n is neginf:
-            return '-Infinity'
-        elif isinstance(n, float):
-            # Check for non-numbers.
-            # In python nan == inf == -inf, so must use repr() to distinguish
-            reprn = repr(n).lower()
-            if ('inf' in reprn and '-' in reprn) or n == neginf:
-                return '-Infinity'
-            elif 'inf' in reprn or n is inf:
-                return 'Infinity'
-            elif 'nan' in reprn or n is nan:
-                return 'NaN'
-            return repr(n)
-        else:
-            raise TypeError('encode_number expected an integral, float, or decimal number type',type(n))
-
-    def decode_string(self, s, i=0, imax=None):
-        """Intermediate-level decoder for JSON string literals.
-
-        Takes a string and a starting index, and returns a Python
-        string (or unicode string) and the index of the next unparsed
-        character.
-
-        """
-        if imax is None:
-            imax = len(s)
-        if imax < i+2 or s[i] not in '"\'':
-            raise JSONDecodeError('string literal must be properly quoted',s[i:])
-        closer = s[i]
-        if closer == '\'' and not self._allow_single_quoted_strings:
-            raise JSONDecodeError('string literals must use double quotation marks in strict JSON',s[i:])
-        i += 1 # skip quote
-        if self._allow_js_string_escapes:
-            escapes = self._escapes_js
-        else:
-            escapes = self._escapes_json
-        ccallowed = self._allow_control_char_in_string
-        chunks = []
-        _append = chunks.append
-        done = False
-        high_surrogate = None
-        while i < imax:
-            c = s[i]
-            # Make sure a high surrogate is immediately followed by a low surrogate
-            if high_surrogate and (i+1 >= imax or s[i:i+2] != '\\u'):
-                raise JSONDecodeError('High unicode surrogate must be followed by a low surrogate',s[i:])
-            if c == closer:
-                i += 1 # skip end quote
-                done = True
-                break
-            elif c == '\\':
-                # Escaped character
-                i += 1
-                if i >= imax:
-                    raise JSONDecodeError('escape in string literal is incomplete',s[i-1:])
-                c = s[i]
-
-                if '0' <= c <= '7' and self._allow_octal_numbers:
-                    # Handle octal escape codes first so special \0 doesn't kick in yet.
-                    # Follow Annex B.1.2 of ECMAScript standard.
-                    if '0' <= c <= '3':
-                        maxdigits = 3
-                    else:
-                        maxdigits = 2
-                    for k in range(i, i+maxdigits+1):
-                        if k >= imax or s[k] not in octaldigits:
-                            break
-                    n = decode_octal(s[i:k])
-                    if n < 128:
-                        _append( chr(n) )
-                    else:
-                        _append( unichr(n) )
-                    i = k
-                    continue
-
-                if escapes.has_key(c):
-                    _append(escapes[c])
-                    i += 1
-                elif c == 'u' or c == 'x':
-                    i += 1
-                    if c == 'u':
-                        digits = 4
-                    else: # c== 'x'
-                        if not self._allow_js_string_escapes:
-                            raise JSONDecodeError(r'string literals may not use the \x hex-escape in strict JSON',s[i-1:])
-                        digits = 2
-                    if i+digits >= imax:
-                        raise JSONDecodeError('numeric character escape sequence is truncated',s[i-1:])
-                    n = decode_hex( s[i:i+digits] )
-                    if high_surrogate:
-                        # Decode surrogate pair and clear high surrogate
-                        _append( surrogate_pair_as_unicode( high_surrogate, unichr(n) ) )
-                        high_surrogate = None
-                    elif n < 128:
-                        # ASCII chars always go in as a str
-                        _append( chr(n) )
-                    elif 0xd800 <= n <= 0xdbff: # high surrogate
-                        if imax < i + digits + 2 or s[i+digits] != '\\' or s[i+digits+1] != 'u':
-                            raise JSONDecodeError('High unicode surrogate must be followed by a low surrogate',s[i-2:])
-                        high_surrogate = unichr(n)  # remember until we get to the low surrogate
-                    elif 0xdc00 <= n <= 0xdfff: # low surrogate
-                        raise JSONDecodeError('Low unicode surrogate must be proceeded by a high surrogate',s[i-2:])
-                    else:
-                        # Other chars go in as a unicode char
-                        _append( unichr(n) )
-                    i += digits
-                else:
-                    # Unknown escape sequence
-                    if self._allow_nonescape_characters:
-                        _append( c )
-                        i += 1
-                    else:
-                        raise JSONDecodeError('unsupported escape code in JSON string literal',s[i-1:])
-            elif ord(c) <= 0x1f: # A control character
-                if self.islineterm(c):
-                    raise JSONDecodeError('line terminator characters must be escaped inside string literals',s[i:])
-                elif ccallowed:
-                    _append( c )
-                    i += 1
-                else:
-                    raise JSONDecodeError('control characters must be escaped inside JSON string literals',s[i:])
-            else: # A normal character; not an escape sequence or end-quote.
-                # Find a whole sequence of "safe" characters so we can append them
-                # all at once rather than one a time, for speed.
-                j = i
-                i += 1
-                while i < imax and s[i] not in unsafe_string_chars and s[i] != closer:
-                    i += 1
-                _append(s[j:i])
-        if not done:
-            raise JSONDecodeError('string literal is not terminated with a quotation mark',s)
-        s = ''.join( chunks )
-        return s, i
-
-    def encode_string(self, s):
-        """Encodes a Python string into a JSON string literal.
-
-        """
-        # Must handle instances of UserString specially in order to be
-        # able to use ord() on it's simulated "characters".
-        import UserString
-        if isinstance(s, (UserString.UserString, UserString.MutableString)):
-            def tochar(c):
-                return c.data
-        else:
-            # Could use "lambda c:c", but that is too slow.  So we set to None
-            # and use an explicit if test inside the loop.
-            tochar = None
-        
-        chunks = []
-        chunks.append('"')
-        revesc = self._rev_escapes
-        asciiencodable = self._asciiencodable
-        encunicode = self._encode_unicode_as_escapes
-        i = 0
-        imax = len(s)
-        while i < imax:
-            if tochar:
-                c = tochar(s[i])
-            else:
-                c = s[i]
-            cord = ord(c)
-            if cord < 256 and asciiencodable[cord] and isinstance(encunicode, bool):
-                # Contiguous runs of plain old printable ASCII can be copied
-                # directly to the JSON output without worry (unless the user
-                # has supplied a custom is-encodable function).
-                j = i
-                i += 1
-                while i < imax:
-                    if tochar:
-                        c = tochar(s[i])
-                    else:
-                        c = s[i]
-                    cord = ord(c)
-                    if cord < 256 and asciiencodable[cord]:
-                        i += 1
-                    else:
-                        break
-                chunks.append( unicode(s[j:i]) )
-            elif revesc.has_key(c):
-                # Has a shortcut escape sequence, like "\n"
-                chunks.append(revesc[c])
-                i += 1
-            elif cord <= 0x1F:
-                # Always unicode escape ASCII-control characters
-                chunks.append(r'\u%04x' % cord)
-                i += 1
-            elif 0xD800 <= cord <= 0xDFFF:
-                # A raw surrogate character!  This should never happen
-                # and there's no way to include it in the JSON output.
-                # So all we can do is complain.
-                cname = 'U+%04X' % cord
-                raise JSONEncodeError('can not include or escape a Unicode surrogate character',cname)
-            elif cord <= 0xFFFF:
-                # Other BMP Unicode character
-                if isinstance(encunicode, bool):
-                    doesc = encunicode
-                else:
-                    doesc = encunicode( c )
-                if doesc:
-                    chunks.append(r'\u%04x' % cord)
-                else:
-                    chunks.append( c )
-                i += 1
-            else: # ord(c) >= 0x10000
-                # Non-BMP Unicode
-                if isinstance(encunicode, bool):
-                    doesc = encunicode
-                else:
-                    doesc = encunicode( c )
-                if doesc:
-                    for surrogate in unicode_as_surrogate_pair(c):
-                        chunks.append(r'\u%04x' % ord(surrogate))
-                else:
-                    chunks.append( c )
-                i += 1
-        chunks.append('"')
-        return ''.join( chunks )
-
-    def skip_comment(self, txt, i=0):
-        """Skips an ECMAScript comment, either // or /* style.
-
-        The contents of the comment are returned as a string, as well
-        as the index of the character immediately after the comment.
-
-        """
-        if i+1 >= len(txt) or txt[i] != '/' or txt[i+1] not in '/*':
-            return None, i
-        if not self._allow_comments:
-            raise JSONDecodeError('comments are not allowed in strict JSON',txt[i:])
-        multiline = (txt[i+1] == '*')
-        istart = i
-        i += 2
-        while i < len(txt):
-            if multiline:
-                if txt[i] == '*' and i+1 < len(txt) and txt[i+1] == '/':
-                    j = i+2
-                    break
-                elif txt[i] == '/' and i+1 < len(txt) and txt[i+1] == '*':
-                    raise JSONDecodeError('multiline /* */ comments may not nest',txt[istart:i+1])
-            else:
-                if self.islineterm(txt[i]):
-                    j = i  # line terminator is not part of comment
-                    break
-            i += 1
-
-        if i >= len(txt):
-            if not multiline:
-                j = len(txt)  # // comment terminated by end of file is okay
-            else:
-                raise JSONDecodeError('comment was never terminated',txt[istart:])
-        return txt[istart:j], j
-
-    def skipws(self, txt, i=0, imax=None, skip_comments=True):
-        """Skips whitespace.
-        """
-        if not self._allow_comments and not self._allow_unicode_whitespace:
-            if imax is None:
-                imax = len(txt)
-            while i < imax and txt[i] in ' \r\n\t':
-                i += 1
-            return i
-        else:
-            return self.skipws_any(txt, i, imax, skip_comments)
-
-    def skipws_any(self, txt, i=0, imax=None, skip_comments=True):
-        """Skips all whitespace, including comments and unicode whitespace
-
-        Takes a string and a starting index, and returns the index of the
-        next non-whitespace character.
-
-        If skip_comments is True and not running in strict JSON mode, then
-        comments will be skipped over just like whitespace.
-
-        """
-        if imax is None:
-            imax = len(txt)
-        while i < imax:
-            if txt[i] == '/':
-                cmt, i = self.skip_comment(txt, i)
-            if i < imax and self.isws(txt[i]):
-                i += 1
-            else:
-                break
-        return i
-
-    def decode_composite(self, txt, i=0, imax=None):
-        """Intermediate-level JSON decoder for composite literal types (array and object).
-
-        Takes text and a starting index, and returns either a Python list or
-        dictionary and the index of the next unparsed character.
-
-        """
-        if imax is None:
-            imax = len(txt)
-        i = self.skipws(txt, i, imax)
-        starti = i
-        if i >= imax or txt[i] not in '{[':
-            raise JSONDecodeError('composite object must start with "[" or "{"',txt[i:])
-        if txt[i] == '[':
-            isdict = False
-            closer = ']'
-            obj = []
-        else:
-            isdict = True
-            closer = '}'
-            obj = {}
-        i += 1 # skip opener
-        i = self.skipws(txt, i, imax)
-
-        if i < imax and txt[i] == closer:
-            # empty composite
-            i += 1
-            done = True
-        else:
-            saw_value = False   # set to false at beginning and after commas
-            done = False
-            while i < imax:
-                i = self.skipws(txt, i, imax)
-                if i < imax and (txt[i] == ',' or txt[i] == closer):
-                    c = txt[i]
-                    i += 1
-                    if c == ',':
-                        if not saw_value:
-                            # no preceeding value, an elided (omitted) element
-                            if isdict:
-                                raise JSONDecodeError('can not omit elements of an object (dictionary)')
-                            if self._allow_omitted_array_elements:
-                                if self._allow_undefined_values:
-                                    obj.append( undefined )
-                                else:
-                                    obj.append( None )
-                            else:
-                                raise JSONDecodeError('strict JSON does not permit omitted array (list) elements',txt[i:])
-                        saw_value = False
-                        continue
-                    else: # c == closer
-                        if not saw_value and not self._allow_trailing_comma_in_literal:
-                            if isdict:
-                                raise JSONDecodeError('strict JSON does not allow a final comma in an object (dictionary) literal',txt[i-2:])
-                            else:
-                                raise JSONDecodeError('strict JSON does not allow a final comma in an array (list) literal',txt[i-2:])
-                        done = True
-                        break
-
-                # Decode the item
-                if isdict and self._allow_nonstring_keys:
-                    r = self.decodeobj(txt, i, identifier_as_string=True)
-                else:
-                    r = self.decodeobj(txt, i, identifier_as_string=False)
-                if r:
-                    if saw_value:
-                        # two values without a separating comma
-                        raise JSONDecodeError('values must be separated by a comma', txt[i:r[1]])
-                    saw_value = True
-                    i = self.skipws(txt, r[1], imax)
-                    if isdict:
-                        key = r[0]  # Ref 11.1.5
-                        if not isstringtype(key):
-                            if isnumbertype(key):
-                                if not self._allow_nonstring_keys:
-                                    raise JSONDecodeError('strict JSON only permits string literals as object properties (dictionary keys)',txt[starti:])
-                            else:
-                                raise JSONDecodeError('object properties (dictionary keys) must be either string literals or numbers',txt[starti:])
-                        if i >= imax or txt[i] != ':':
-                            raise JSONDecodeError('object property (dictionary key) has no value, expected ":"',txt[starti:])
-                        i += 1
-                        i = self.skipws(txt, i, imax)
-                        rval = self.decodeobj(txt, i)
-                        if rval:
-                            i = self.skipws(txt, rval[1], imax)
-                            obj[key] = rval[0]
-                        else:
-                            raise JSONDecodeError('object property (dictionary key) has no value',txt[starti:])
-                    else: # list
-                        obj.append( r[0] )
-                else: # not r
-                    if isdict:
-                        raise JSONDecodeError('expected a value, or "}"',txt[i:])
-                    elif not self._allow_omitted_array_elements:
-                        raise JSONDecodeError('expected a value or "]"',txt[i:])
-                    else:
-                        raise JSONDecodeError('expected a value, "," or "]"',txt[i:])
-            # end while
-        if not done:
-            if isdict:
-                raise JSONDecodeError('object literal (dictionary) is not terminated',txt[starti:])
-            else:
-                raise JSONDecodeError('array literal (list) is not terminated',txt[starti:])
-        return obj, i
-
-    def decode_javascript_identifier(self, name):
-        """Convert a JavaScript identifier into a Python string object.
-
-        This method can be overriden by a subclass to redefine how JavaScript
-        identifiers are turned into Python objects.  By default this just
-        converts them into strings.
-
-        """
-        return name
-
-    def decodeobj(self, txt, i=0, imax=None, identifier_as_string=False, only_object_or_array=False):
-        """Intermediate-level JSON decoder.
-
-        Takes a string and a starting index, and returns a two-tuple consting
-        of a Python object and the index of the next unparsed character.
-
-        If there is no value at all (empty string, etc), the None is
-        returned instead of a tuple.
-
-        """
-        if imax is None:
-            imax = len(txt)
-        obj = None
-        i = self.skipws(txt, i, imax)
-        if i >= imax:
-            raise JSONDecodeError('Unexpected end of input')
-        c = txt[i]
-
-        if c == '[' or c == '{':
-            obj, i = self.decode_composite(txt, i, imax)
-        elif only_object_or_array:
-            raise JSONDecodeError('JSON document must start with an object or array type only', txt[i:i+20])
-        elif c == '"' or c == '\'':
-            obj, i = self.decode_string(txt, i, imax)
-        elif c.isdigit() or c in '.+-':
-            obj, i = self.decode_number(txt, i, imax)
-        elif c.isalpha() or c in'_$':
-            j = i
-            while j < imax and (txt[j].isalnum() or txt[j] in '_$'):
-                j += 1
-            kw = txt[i:j]
-            if kw == 'null':
-                obj, i = None, j
-            elif kw == 'true':
-                obj, i = True, j
-            elif kw == 'false':
-                obj, i = False, j
-            elif kw == 'undefined':
-                if self._allow_undefined_values:
-                    obj, i = undefined, j
-                else:
-                    raise JSONDecodeError('strict JSON does not allow undefined elements',txt[i:])
-            elif kw == 'NaN' or kw == 'Infinity':
-                obj, i = self.decode_number(txt, i)
-            else:
-                if identifier_as_string:
-                    obj, i = self.decode_javascript_identifier(kw), j
-                else:
-                    raise JSONDecodeError('unknown keyword or identifier',kw)
-        else:
-            raise JSONDecodeError('can not decode value',txt[i:])
-        return obj, i
-
-
-
-    def decode(self, txt):
-        """Decodes a JSON-endoded string into a Python object."""
-        if self._allow_unicode_format_control_chars:
-            txt = self.strip_format_control_chars(txt)
-        r = self.decodeobj(txt, 0, only_object_or_array=not self._allow_any_type_at_start)
-        if not r:
-            raise JSONDecodeError('can not decode value',txt)
-        else:
-            obj, i = r
-            i = self.skipws(txt, i)
-            if i < len(txt):
-                raise JSONDecodeError('unexpected or extra text',txt[i:])
-        return obj
-
-    def encode(self, obj, nest_level=0):
-        """Encodes the Python object into a JSON string representation.
-
-        This method will first attempt to encode an object by seeing
-        if it has a json_equivalent() method.  If so than it will
-        call that method and then recursively attempt to encode
-        the object resulting from that call.
-
-        Next it will attempt to determine if the object is a native
-        type or acts like a squence or dictionary.  If so it will
-        encode that object directly.
-
-        Finally, if no other strategy for encoding the object of that
-        type exists, it will call the encode_default() method.  That
-        method currently raises an error, but it could be overridden
-        by subclasses to provide a hook for extending the types which
-        can be encoded.
-
-        """
-        chunks = []
-        self.encode_helper(chunks, obj, nest_level)
-        return ''.join( chunks )
-
-    def encode_helper(self, chunklist, obj, nest_level):
-        #print 'encode_helper(chunklist=%r, obj=%r, nest_level=%r)'%(chunklist,obj,nest_level)
-        if hasattr(obj, 'json_equivalent'):
-            json = self.encode_equivalent( obj, nest_level=nest_level )
-            if json is not None:
-                chunklist.append( json )
-                return
-        if obj is None:
-            chunklist.append( self.encode_null() )
-        elif obj is undefined:
-            if self._allow_undefined_values:
-                chunklist.append( self.encode_undefined() )
-            else:
-                raise JSONEncodeError('strict JSON does not permit "undefined" values')
-        elif isinstance(obj, bool):
-            chunklist.append( self.encode_boolean(obj) )
-        elif isinstance(obj, (int,long,float,complex)) or \
-                 (decimal and isinstance(obj, decimal.Decimal)):
-            chunklist.append( self.encode_number(obj) )
-        elif isinstance(obj, basestring) or isstringtype(obj):
-            chunklist.append( self.encode_string(obj) )
-        else:
-            self.encode_composite(chunklist, obj, nest_level)
-
-    def encode_composite(self, chunklist, obj, nest_level):
-        """Encodes just dictionaries, lists, or sequences.
-
-        Basically handles any python type for which iter() can create
-        an iterator object.
-
-        This method is not intended to be called directly.  Use the
-        encode() method instead.
-
-        """
-        #print 'encode_complex_helper(chunklist=%r, obj=%r, nest_level=%r)'%(chunklist,obj,nest_level)
-        try:
-            # Is it a dictionary or UserDict?  Try iterkeys method first.
-            it = obj.iterkeys()
-        except AttributeError:
-            try:
-                # Is it a sequence?  Try to make an iterator for it.
-                it = iter(obj)
-            except TypeError:
-                it = None
-        if it is not None:
-            # Does it look like a dictionary?  Check for a minimal dict or
-            # UserDict interface.
-            isdict = hasattr(obj, '__getitem__') and hasattr(obj, 'keys')
-            compactly = self._encode_compactly
-            if isdict:
-                chunklist.append('{')
-                if compactly:
-                    dictcolon = ':'
-                else:
-                    dictcolon = ' : '
-            else:
-                chunklist.append('[')
-            #print nest_level, 'opening sequence:', repr(chunklist)
-            if not compactly:
-                indent0 = '  ' * nest_level
-                indent = '  ' * (nest_level+1)
-                chunklist.append(' ')
-            sequence_chunks = []  # use this to allow sorting afterwards if dict
-            try: # while not StopIteration
-                numitems = 0
-                while True:
-                    obj2 = it.next()
-                    if obj2 is obj:
-                        raise JSONEncodeError('trying to encode an infinite sequence',obj)
-                    if isdict and not isstringtype(obj2):
-                        # Check JSON restrictions on key types
-                        if isnumbertype(obj2):
-                            if not self._allow_nonstring_keys:
-                                raise JSONEncodeError('object properties (dictionary keys) must be strings in strict JSON',obj2)
-                        else:
-                            raise JSONEncodeError('object properties (dictionary keys) can only be strings or numbers in ECMAScript',obj2)
-
-                    # Encode this item in the sequence and put into item_chunks
-                    item_chunks = []
-                    self.encode_helper( item_chunks, obj2, nest_level=nest_level+1 )
-                    if isdict:
-                        item_chunks.append(dictcolon)
-                        obj3 = obj[obj2]
-                        self.encode_helper(item_chunks, obj3, nest_level=nest_level+2)
-
-                    #print nest_level, numitems, 'item:', repr(obj2)
-                    #print nest_level, numitems, 'sequence_chunks:', repr(sequence_chunks)
-                    #print nest_level, numitems, 'item_chunks:', repr(item_chunks)
-                    #extend_list_with_sep(sequence_chunks, item_chunks)
-                    sequence_chunks.append(item_chunks)
-                    #print nest_level, numitems, 'new sequence_chunks:', repr(sequence_chunks)
-                    numitems += 1
-            except StopIteration:
-                pass
-
-            if isdict and self._sort_dictionary_keys:
-                sequence_chunks.sort()  # Note sorts by JSON repr, not original Python object
-            if compactly:
-                sep = ','
-            else:
-                sep = ',\n' + indent
-
-            #print nest_level, 'closing sequence'
-            #print nest_level, 'chunklist:', repr(chunklist)
-            #print nest_level, 'sequence_chunks:', repr(sequence_chunks)
-            extend_and_flatten_list_with_sep( chunklist, sequence_chunks, sep )
-            #print nest_level, 'new chunklist:', repr(chunklist)
-
-            if not compactly:
-                if numitems > 1:
-                    chunklist.append('\n' + indent0)
-                else:
-                    chunklist.append(' ')
-            if isdict:
-                chunklist.append('}')
-            else:
-                chunklist.append(']')
-        else: # Can't create an iterator for the object
-            json2 = self.encode_default( obj, nest_level=nest_level )
-            chunklist.append( json2 )
-
-    def encode_equivalent( self, obj, nest_level=0 ):
-        """This method is used to encode user-defined class objects.
-
-        The object being encoded should have a json_equivalent()
-        method defined which returns another equivalent object which
-        is easily JSON-encoded.  If the object in question has no
-        json_equivalent() method available then None is returned
-        instead of a string so that the encoding will attempt the next
-        strategy.
-
-        If a caller wishes to disable the calling of json_equivalent()
-        methods, then subclass this class and override this method
-        to just return None.
-        
-        """
-        if hasattr(obj, 'json_equivalent') \
-               and callable(getattr(obj,'json_equivalent')):
-            obj2 = obj.json_equivalent()
-            if obj2 is obj:
-                # Try to prevent careless infinite recursion
-                raise JSONEncodeError('object has a json_equivalent() method that returns itself',obj)
-            json2 = self.encode( obj2, nest_level=nest_level )
-            return json2
-        else:
-            return None
-
-    def encode_default( self, obj, nest_level=0 ):
-        """This method is used to encode objects into JSON which are not straightforward.
-
-        This method is intended to be overridden by subclasses which wish
-        to extend this encoder to handle additional types.
-
-        """
-        raise JSONEncodeError('can not encode object into a JSON representation',obj)
-
-
-# ------------------------------
-
-def encode( obj, strict=False, compactly=True, escape_unicode=False, encoding=None ):
-    """Encodes a Python object into a JSON-encoded string.
-
-    If 'strict' is set to True, then only strictly-conforming JSON
-    output will be produced.  Note that this means that some types
-    of values may not be convertable and will result in a
-    JSONEncodeError exception.
-
-    If 'compactly' is set to True, then the resulting string will
-    have all extraneous white space removed; if False then the
-    string will be "pretty printed" with whitespace and indentation
-    added to make it more readable.
-
-    If 'escape_unicode' is set to True, then all non-ASCII characters
-    will be represented as a unicode escape sequence; if False then
-    the actual real unicode character will be inserted.
-
-    If no encoding is specified (encoding=None) then the output will
-    either be a Python string (if entirely ASCII) or a Python unicode
-    string type.
-
-    However if an encoding name is given then the returned value will
-    be a python string which is the byte sequence encoding the JSON
-    value.  As the default/recommended encoding for JSON is UTF-8,
-    you should almost always pass in encoding='utf8'.
-
-    """
-    import sys
-    encoder = None # Custom codec encoding function
-    bom = None  # Byte order mark to prepend to final output
-    cdk = None  # Codec to use
-    if encoding is not None:
-        import codecs
-        try:
-            cdk = codecs.lookup(encoding)
-        except LookupError:
-            cdk = None
-
-        if cdk:
-            pass
-        elif not cdk:
-            # No built-in codec was found, see if it is something we
-            # can do ourself.
-            encoding = encoding.lower()
-            if encoding.startswith('utf-32') or encoding.startswith('utf32') \
-                   or encoding.startswith('ucs4') \
-                   or encoding.startswith('ucs-4'):
-                # Python doesn't natively have a UTF-32 codec, but JSON
-                # requires that it be supported.  So we must decode these
-                # manually.
-                if encoding.endswith('le'):
-                    encoder = utf32le_encode
-                elif encoding.endswith('be'):
-                    encoder = utf32be_encode
-                else:
-                    encoder = utf32be_encode
-                    bom = codecs.BOM_UTF32_BE
-            elif encoding.startswith('ucs2') or encoding.startswith('ucs-2'):
-                # Python has no UCS-2, but we can simulate with
-                # UTF-16.  We just need to force us to not try to
-                # encode anything past the BMP.
-                encoding = 'utf-16'
-                if not escape_unicode and not callable(escape_unicode):
-                   escape_unicode = lambda c: (0xD800 <= ord(c) <= 0xDFFF) or ord(c) >= 0x10000
-            else:
-                raise JSONEncodeError('this python has no codec for this character encoding',encoding)
-
-    if not escape_unicode and not callable(escape_unicode):
-        if encoding and encoding.startswith('utf'):
-            # All UTF-x encodings can do the whole Unicode repertoire, so
-            # do nothing special.
-            pass
-        else:
-            # Even though we don't want to escape all unicode chars,
-            # the encoding being used may force us to do so anyway.
-            # We must pass in a function which says which characters
-            # the encoding can handle and which it can't.
-            def in_repertoire( c, encoding_func ):
-                try:
-                    x = encoding_func( c, errors='strict' )
-                except UnicodeError:
-                    return False
-                return True
-            if encoder:
-                escape_unicode = lambda c: not in_repertoire(c, encoder)
-            elif cdk:
-                escape_unicode = lambda c: not in_repertoire(c, cdk[0])
-            else:
-                pass # Let the JSON object deal with it
-
-    j = JSON( strict=strict, compactly=compactly, escape_unicode=escape_unicode )
-
-    unitxt = j.encode( obj )
-    if encoder:
-        txt = encoder( unitxt )
-    elif encoding is not None:
-        txt = unitxt.encode( encoding )
-    else:
-        txt = unitxt
-    if bom:
-        txt = bom + txt
-    return txt
-
-
-def decode( txt, strict=False, encoding=None, **kw ):
-    """Decodes a JSON-encoded string into a Python object.
-
-    If 'strict' is set to True, then those strings that are not
-    entirely strictly conforming to JSON will result in a
-    JSONDecodeError exception.
-
-    The input string can be either a python string or a python unicode
-    string.  If it is already a unicode string, then it is assumed
-    that no character set decoding is required.
-
-    However, if you pass in a non-Unicode text string (i.e., a python
-    type 'str') then an attempt will be made to auto-detect and decode
-    the character encoding.  This will be successful if the input was
-    encoded in any of UTF-8, UTF-16 (BE or LE), or UTF-32 (BE or LE),
-    and of course plain ASCII works too.
-    
-    Note though that if you know the character encoding, then you
-    should convert to a unicode string yourself, or pass it the name
-    of the 'encoding' to avoid the guessing made by the auto
-    detection, as with
-
-        python_object = demjson.decode( input_bytes, encoding='utf8' )
-
-    Optional keywords arguments must be of the form
-        allow_xxxx=True/False
-    or
-        prevent_xxxx=True/False
-    where each will allow or prevent the specific behavior, after the
-    evaluation of the 'strict' argument.  For example, if strict=True
-    then by also passing 'allow_comments=True' then comments will be
-    allowed.  If strict=False then prevent_comments=True will allow
-    everything except comments.
-    
-    """
-    # Initialize the JSON object
-    j = JSON( strict=strict )
-    for keyword, value in kw.items():
-        if keyword.startswith('allow_'):
-            behavior = keyword[6:]
-            allow = bool(value)
-        elif keyword.startswith('prevent_'):
-            behavior = keyword[8:]
-            allow = not bool(value)
-        else:
-            raise ValueError('unknown keyword argument', keyword)
-        if allow:
-            j.allow(behavior)
-        else:
-            j.prevent(behavior)
-
-    # Convert the input string into unicode if needed.
-    if isinstance(txt,unicode):
-        unitxt = txt
-    else:
-        if encoding is None:
-            unitxt = auto_unicode_decode( txt )
-        else:
-            cdk = None # codec
-            decoder = None
-            import codecs
-            try:
-                cdk = codecs.lookup(encoding)
-            except LookupError:
-                encoding = encoding.lower()
-                decoder = None
-                if encoding.startswith('utf-32') \
-                       or encoding.startswith('ucs4') \
-                       or encoding.startswith('ucs-4'):
-                    # Python doesn't natively have a UTF-32 codec, but JSON
-                    # requires that it be supported.  So we must decode these
-                    # manually.
-                    if encoding.endswith('le'):
-                        decoder = utf32le_decode
-                    elif encoding.endswith('be'):
-                        decoder = utf32be_decode
-                    else:
-                        if txt.startswith( codecs.BOM_UTF32_BE ):
-                            decoder = utf32be_decode
-                            txt = txt[4:]
-                        elif txt.startswith( codecs.BOM_UTF32_LE ):
-                            decoder = utf32le_decode
-                            txt = txt[4:]
-                        else:
-                            if encoding.startswith('ucs'):
-                                raise JSONDecodeError('UCS-4 encoded string must start with a BOM')
-                            decoder = utf32be_decode # Default BE for UTF, per unicode spec
-                elif encoding.startswith('ucs2') or encoding.startswith('ucs-2'):
-                    # Python has no UCS-2, but we can simulate with
-                    # UTF-16.  We just need to force us to not try to
-                    # encode anything past the BMP.
-                    encoding = 'utf-16'
-
-            if decoder:
-                unitxt = decoder(txt)
-            elif encoding:
-                unitxt = txt.decode(encoding)
-            else:
-                raise JSONDecodeError('this python has no codec for this character encoding',encoding)
-
-        # Check that the decoding seems sane.  Per RFC 4627 section 3:
-        #    "Since the first two characters of a JSON text will
-        #    always be ASCII characters [RFC0020], ..."
-        #
-        # This check is probably not necessary, but it allows us to
-        # raise a suitably descriptive error rather than an obscure
-        # syntax error later on.
-        #
-        # Note that the RFC requirements of two ASCII characters seems
-        # to be an incorrect statement as a JSON string literal may
-        # have as it's first character any unicode character.  Thus
-        # the first two characters will always be ASCII, unless the
-        # first character is a quotation mark.  And in non-strict
-        # mode we can also have a few other characters too.
-        if len(unitxt) > 2:
-            first, second = unitxt[:2]
-            if first in '"\'':
-                pass # second can be anything inside string literal
-            else:
-                if ((ord(first) < 0x20 or ord(first) > 0x7f) or \
-                    (ord(second) < 0x20 or ord(second) > 0x7f)) and \
-                    (not j.isws(first) and not j.isws(second)):
-                    # Found non-printable ascii, must check unicode
-                    # categories to see if the character is legal.
-                    # Only whitespace, line and paragraph separators,
-                    # and format control chars are legal here.
-                    import unicodedata
-                    catfirst = unicodedata.category(unicode(first))
-                    catsecond = unicodedata.category(unicode(second))
-                    if catfirst not in ('Zs','Zl','Zp','Cf') or \
-                           catsecond not in ('Zs','Zl','Zp','Cf'):
-                        raise JSONDecodeError('the decoded string is gibberish, is the encoding correct?',encoding)
-    # Now ready to do the actual decoding
-    obj = j.decode( unitxt )
-    return obj
-
-# end file
diff --git a/cgi-bin/load_question.py b/cgi-bin/load_question.py
deleted file mode 100755
index af67e8230..000000000
--- a/cgi-bin/load_question.py
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/usr/bin/python2.5
-
-# Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
-# https://github.com/pgbovine/OnlinePythonTutor/
-# 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-# 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-
-# Load a question file in the 'questions/' sub-directory, parse it,
-# and return it to the caller in JSON format
-QUESTIONS_DIR = '../questions/'
-
-from parse_questions import parseQuestionsFile
-
-import cgi, os, demjson
-
-form = cgi.FieldStorage()
-question_file = form['question_file'].value
-
-fn = QUESTIONS_DIR + question_file + '.txt'
-assert os.path.isfile(fn)
-
-
-# Crucial first line to make sure that Apache serves this data
-# correctly - DON'T FORGET THE EXTRA NEWLINES!!!:
-print "Content-type: text/plain; charset=iso-8859-1\n\n"
-print demjson.encode(parseQuestionsFile(fn))
diff --git a/jquery.textarea.js b/jquery.textarea.js
deleted file mode 100644
index cd8acd5e4..000000000
--- a/jquery.textarea.js
+++ /dev/null
@@ -1,260 +0,0 @@
-// include this file AFTER including jQuery
-
-/*
- *	Tabby jQuery plugin version 0.12
- *
- *	Ted Devito - http://teddevito.com/demos/textarea.html
- *
- *	You should have received a copy of the GNU General Public License
- *	along with Easy Widgets. If not, see <http://www.gnu.org/licenses/>
- *
- *	Plugin development pattern based on:	http://www.learningjquery.com/2007/10/a-plugin-development-pattern
- *
- */
- 
-// create closure
-
-(function($) {
- 
-	// plugin definition
-
-	$.fn.tabby = function(options) {
-		//debug(this);
-		// build main options before element iteration
-		var opts = $.extend({}, $.fn.tabby.defaults, options);
-		var pressed = $.fn.tabby.pressed; 
-		
-		// iterate and reformat each matched element
-		return this.each(function() {
-			$this = $(this);
-			
-			// build element specific options
-			var options = $.meta ? $.extend({}, opts, $this.data()) : opts;
-			
-			$this.bind('keydown',function (e) {
-				var kc = $.fn.tabby.catch_kc(e);
-				if (16 == kc) pressed.shft = true;
-				/*
-				because both CTRL+TAB and ALT+TAB default to an event (changing tab/window) that 
-				will prevent js from capturing the keyup event, we'll set a timer on releasing them.
-				*/
-				if (17 == kc) {pressed.ctrl = true;	setTimeout("$.fn.tabby.pressed.ctrl = false;",1000);}
-				if (18 == kc) {pressed.alt = true; 	setTimeout("$.fn.tabby.pressed.alt = false;",1000);}
-					
-				if (9 == kc && !pressed.ctrl && !pressed.alt) {
-					e.preventDefault; // does not work in O9.63 ??
-					pressed.last = kc;	setTimeout("$.fn.tabby.pressed.last = null;",0);
-					process_keypress ($(e.target).get(0), pressed.shft, options);
-					return false;
-				}
-				
-			}).bind('keyup',function (e) {
-				if (16 == $.fn.tabby.catch_kc(e)) pressed.shft = false;
-			}).bind('blur',function (e) { // workaround for Opera -- http://www.webdeveloper.com/forum/showthread.php?p=806588
-				if (9 == pressed.last) $(e.target).one('focus',function (e) {pressed.last = null;}).get(0).focus();
-			});
-		
-		});
-	};
-	
-	// define and expose any extra methods
-	$.fn.tabby.catch_kc = function(e) { return e.keyCode ? e.keyCode : e.charCode ? e.charCode : e.which; };
-	$.fn.tabby.pressed = {shft : false, ctrl : false, alt : false, last: null};
-	
-	// private function for debugging
-	function debug($obj) {
-		if (window.console && window.console.log)
-		window.console.log('textarea count: ' + $obj.size());
-	};
-
-	function process_keypress (o,shft,options) {
-		var scrollTo = o.scrollTop;
-		//var tabString = String.fromCharCode(9);
-		
-		// gecko; o.setSelectionRange is only available when the text box has focus
-		if (o.setSelectionRange) gecko_tab (o, shft, options);
-		
-		// ie; document.selection is always available
-		else if (document.selection) ie_tab (o, shft, options);
-		
-		o.scrollTop = scrollTo;
-	}
-	
-	// plugin defaults
-	//$.fn.tabby.defaults = {tabString : String.fromCharCode(9)};
-  // modified by pgbovine:
-	$.fn.tabby.defaults = {tabString : '    '};
-	
-	function gecko_tab (o, shft, options) {
-		var ss = o.selectionStart;
-		var es = o.selectionEnd;	
-				
-		// when there's no selection and we're just working with the caret, we'll add/remove the tabs at the caret, providing more control
-		if(ss == es) {
-			// SHIFT+TAB
-			if (shft) {
-				// check to the left of the caret first
-				//if ("\t" == o.value.substring(ss-options.tabString.length, ss)) {
-        // modified by pgbovine:
-				if ("    " == o.value.substring(ss-options.tabString.length, ss)) {
-					o.value = o.value.substring(0, ss-options.tabString.length) + o.value.substring(ss); // put it back together omitting one character to the left
-					o.focus();
-					o.setSelectionRange(ss - options.tabString.length, ss - options.tabString.length);
-				} 
-				// then check to the right of the caret
-				else if ("\t" == o.value.substring(ss, ss + options.tabString.length)) {
-					o.value = o.value.substring(0, ss) + o.value.substring(ss + options.tabString.length); // put it back together omitting one character to the right
-					o.focus();
-					o.setSelectionRange(ss,ss);
-				}
-			}
-			// TAB
-			else {			
-				o.value = o.value.substring(0, ss) + options.tabString + o.value.substring(ss);
-				o.focus();
-	    		o.setSelectionRange(ss + options.tabString.length, ss + options.tabString.length);
-			}
-		} 
-		// selections will always add/remove tabs from the start of the line
-		else {
-			// split the textarea up into lines and figure out which lines are included in the selection
-			var lines = o.value.split("\n");
-			var indices = new Array();
-			var sl = 0; // start of the line
-			var el = 0; // end of the line
-			var sel = false;
-			for (var i in lines) {
-				el = sl + lines[i].length;
-				indices.push({start: sl, end: el, selected: (sl <= ss && el > ss) || (el >= es && sl < es) || (sl > ss && el < es)});
-				sl = el + 1;// for "\n"
-			}
-			
-			// walk through the array of lines (indices) and add tabs where appropriate						
-			var modifier = 0;
-			for (var i in indices) {
-				if (indices[i].selected) {
-					var pos = indices[i].start + modifier; // adjust for tabs already inserted/removed
-					// SHIFT+TAB
-					if (shft && options.tabString == o.value.substring(pos,pos+options.tabString.length)) { // only SHIFT+TAB if there's a tab at the start of the line
-						o.value = o.value.substring(0,pos) + o.value.substring(pos + options.tabString.length); // omit the tabstring to the right
-						modifier -= options.tabString.length;
-					}
-					// TAB
-					else if (!shft) {
-						o.value = o.value.substring(0,pos) + options.tabString + o.value.substring(pos); // insert the tabstring
-						modifier += options.tabString.length;
-					}
-				}
-			}
-			o.focus();
-			var ns = ss + ((modifier > 0) ? options.tabString.length : (modifier < 0) ? -options.tabString.length : 0);
-			var ne = es + modifier;
-			o.setSelectionRange(ns,ne);
-		}
-	}
-	
-	function ie_tab (o, shft, options) {
-		var range = document.selection.createRange();
-		
-		if (o == range.parentElement()) {
-			// when there's no selection and we're just working with the caret, we'll add/remove the tabs at the caret, providing more control
-			if ('' == range.text) {
-				// SHIFT+TAB
-				if (shft) {
-					var bookmark = range.getBookmark();
-					//first try to the left by moving opening up our empty range to the left
-				    range.moveStart('character', -options.tabString.length);
-				    if (options.tabString == range.text) {
-				    	range.text = '';
-				    } else {
-				    	// if that didn't work then reset the range and try opening it to the right
-				    	range.moveToBookmark(bookmark);
-				    	range.moveEnd('character', options.tabString.length);
-				    	if (options.tabString == range.text) 
-				    		range.text = '';
-				    }
-				    // move the pointer to the start of them empty range and select it
-				    range.collapse(true);
-					range.select();
-				}
-				
-				else {
-					// very simple here. just insert the tab into the range and put the pointer at the end
-					range.text = options.tabString; 
-					range.collapse(false);
-					range.select();
-				}
-			}
-			// selections will always add/remove tabs from the start of the line
-			else {
-			
-				var selection_text = range.text;
-				var selection_len = selection_text.length;
-				var selection_arr = selection_text.split("\r\n");
-				
-				var before_range = document.body.createTextRange();
-				before_range.moveToElementText(o);
-				before_range.setEndPoint("EndToStart", range);
-				var before_text = before_range.text;
-				var before_arr = before_text.split("\r\n");
-				var before_len = before_text.length; // - before_arr.length + 1;
-				
-				var after_range = document.body.createTextRange();
-				after_range.moveToElementText(o);
-				after_range.setEndPoint("StartToEnd", range);
-				var after_text = after_range.text; // we can accurately calculate distance to the end because we're not worried about MSIE trimming a \r\n
-				
-				var end_range = document.body.createTextRange();
-				end_range.moveToElementText(o);
-				end_range.setEndPoint("StartToEnd", before_range);
-				var end_text = end_range.text; // we can accurately calculate distance to the end because we're not worried about MSIE trimming a \r\n
-								
-				var check_html = $(o).html();
-				$("#r3").text(before_len + " + " + selection_len + " + " + after_text.length + " = " + check_html.length);				
-				if((before_len + end_text.length) < check_html.length) {
-					before_arr.push("");
-					before_len += 2; // for the \r\n that was trimmed	
-					if (shft && options.tabString == selection_arr[0].substring(0,options.tabString.length))
-						selection_arr[0] = selection_arr[0].substring(options.tabString.length);
-					else if (!shft) selection_arr[0] = options.tabString + selection_arr[0];	
-				} else {
-					if (shft && options.tabString == before_arr[before_arr.length-1].substring(0,options.tabString.length)) 
-						before_arr[before_arr.length-1] = before_arr[before_arr.length-1].substring(options.tabString.length);
-					else if (!shft) before_arr[before_arr.length-1] = options.tabString + before_arr[before_arr.length-1];
-				}
-				
-				for (var i = 1; i < selection_arr.length; i++) {
-					if (shft && options.tabString == selection_arr[i].substring(0,options.tabString.length))
-						selection_arr[i] = selection_arr[i].substring(options.tabString.length);
-					else if (!shft) selection_arr[i] = options.tabString + selection_arr[i];
-				}
-				
-				if (1 == before_arr.length && 0 == before_len) {
-					if (shft && options.tabString == selection_arr[0].substring(0,options.tabString.length))
-						selection_arr[0] = selection_arr[0].substring(options.tabString.length);
-					else if (!shft) selection_arr[0] = options.tabString + selection_arr[0];
-				}
-
-				if ((before_len + selection_len + after_text.length) < check_html.length) {
-					selection_arr.push("");
-					selection_len += 2; // for the \r\n that was trimmed
-				}
-				
-				before_range.text = before_arr.join("\r\n");
-				range.text = selection_arr.join("\r\n");
-				
-				var new_range = document.body.createTextRange();
-				new_range.moveToElementText(o);
-				
-				if (0 < before_len)	new_range.setEndPoint("StartToEnd", before_range);
-				else new_range.setEndPoint("StartToStart", before_range);
-				new_range.setEndPoint("EndToEnd", range);
-				
-				new_range.select();
-				
-			} 
-		}
-	}
-
-// end of closure
-})(jQuery);
diff --git a/.htaccess b/v1-v2/.htaccess
similarity index 100%
rename from .htaccess
rename to v1-v2/.htaccess
diff --git a/v1-v2/Python3-porting.txt b/v1-v2/Python3-porting.txt
new file mode 100644
index 000000000..dca80e0fa
--- /dev/null
+++ b/v1-v2/Python3-porting.txt
@@ -0,0 +1,101 @@
+See cgi-bin/p4_encoder.py for some proposed changes
+
+John DeNero's comments on 2012-07-23
+'''
+Distinguishing whether
+some x is a class or not in Python 3 should be performed via:
+
+isinstance(x, type)
+
+I don't think any sort of hack or repr comparison is required.
+'''
+
+
+Notes from Peter Wentworth about porting to Python 3
+'''
+Hi Philip - a bug in the code I sent you [NB, see: python3_viz.zip]!  I
+really kludged how I tested for classes vs instances in the file
+p3_encoder that I sent you.   At line 77 of that file, I used str(dat)
+to convert the object to a string, and then did some hackish substring
+searching.  But if the user provides a __str__ method in the class, it
+gets called instead, leading to trouble.
+
+My quick hack was to change the str(dat) call to repr(dat) (which won't
+dispatch to user-written methods), but it doesn't solve the key issue
+that I have not taken proper care to cleanly categorize
+types/objects/classes in Python 3.
+
+Peter
+
+-----Original Message-----
+From: George Wells
+Sent: 21 September 2011 03:47 PM
+To: Peter Wentworth
+Subject: Python visualiser
+
+Hi Peter
+
+I just tried a simple example of a class in the visualiser and it is
+generating an error for some reason (the code runs fine in the
+interpreter).  It was working fine until I added the second method
+(__str__).
+
+The code is:
+
+-----8<-----
+class Point:
+    def __init__ (self, x=0, y=0):
+        self.x=x
+        self.y=y
+    def __str__ (self):
+        return '({0}, {1})'.format(self.x, self.y)
+
+pt=Point(3,4)
+print(pt)
+-----8<-----
+
+Cheers,
+George.
+'''
+
+'''
+Hi Philip
+
+And my last bug report was even sloppy.  I use str(dat) at three
+different places in that file, so it needs to be refactored a little
+before changing the str() to repr()
+'''
+
+Regarding how to port to Python 3 ...
+'''
+HI Philip
+ 
+I don't have anything to recommend.   My experience is that there are
+very few (end-user) things that are quite widely talked about in various
+forums.  Key ones for me is that print is now a function;  range is
+inherently lazy (like P2 xrange used to be),  strings are no longer
+ascii – they are all Unicode, input takes on the semantics of P2
+rawinput, and some methods to iterate over dictionaries are different. 
+ 
+In the context of the visualizer, changing Python 2 to Python 3 wasn't
+particularly complicated, except for the class/instance hurdle.   P3 has
+a more unified class-based type system, immediately evident if you ask
+type(123)  -- it now returns <class 'int'>.   Classes are themselves
+instances of some MetaClass, with a thing called 'type' at the top of
+the hierarchy.  ('type' is an instance of 'type')    So there isn't
+really an easy end-user way to ask "is this a class or an instance?" –
+it is both at the same time!    There is some library that can expose
+detailed internal attributes of things, but I chose not to use that.
+Rather, if you ask for repr(obj) it turns it into some external string
+that always has the word 'instance' in it for instances!   So I got repr
+to do the internal inspection and I made the decision with some string
+matching.
+ 
+One of the more interesting new features in Python 3 is a function
+annotation mechanism.   The compiler ignores annotations.  The idea
+seems to be "lets allow annotations and see what creative things the
+third-party tools do with them". See
+http://www.python.org/dev/peps/pep-3107/ where they use annotations for
+type signatures etc.
+'''
+
diff --git a/v1-v2/README b/v1-v2/README
new file mode 100644
index 000000000..f57dec1fb
--- /dev/null
+++ b/v1-v2/README
@@ -0,0 +1,115 @@
+This directory contains the contents of Versions 1 and 2 of Online
+Python Tutor, for archival purposes:
+
+Version 1 - Released on January 19, 2010
+Version 2 - Released on October  4, 2011
+
+---
+TODO: symlink example-code/ to ../v3/example-code/ if you want to get
+example-code/ working. symlinks are annoying with Dropbox, so I've
+removed it from the git repo for now
+
+======
+System architecture overview:
+
+The Online Python Tutor is implemented as a web application, with a
+JavaScript front-end making AJAX calls to a pure-Python back-end.
+
+The back-end has been tested on an Apache server running Python 2.6
+through CGI.  Note that it will probably fail in subtle ways on other
+Python 2.X (and will DEFINITELY fail on Python 3.X).  Peter Wentworth
+has create a port to Python 3.X, and hopefully we can eventually
+integrate his code into my repository.
+
+
+The front-end is HTML/JavaScript (using the jQuery library).  It's
+responsible for the input text box, submitting the Python code (as
+plaintext) to the back-end, receiving an execution trace from the
+back-end, and then rendering that trace as data structure
+visualizations.  The front-end code resides in these files in the
+current directory:
+
+  tutor.html
+  question.html
+  edu-python.js
+  edu-python-tutor.js
+  edu-python-questions.js
+  edu-python.css
+  jquery.textarea.js
+  .htaccess - to increase the size of allowed Apache HTTP responses
+
+  (there are also other 3rd-party JavaScript library files)
+
+Note on .htaccess: If your server limits the size of responses received
+from HTTP requests, then you might need to use the following .htaccess
+file included in your top-level (front-end) directory, to allow the
+Online Python Tutor to receive traces from the back-end:
+
+<IfModule mod_security.c>
+
+# Set a ~2MB limit for response headers (bigger than default 512K limit)
+SecResponseBodyLimit 2000000
+
+</IfModule>
+
+
+The back-end is a server-side CGI application that takes Python script
+source code as input, executes the entire script (up to 200 executed
+lines, to prevent infinite loops), and collects a full trace of all
+variable values (i.e., data structures) after each line has been
+executed.  It then sends that full trace to the front-end in a
+specially-encoded JSON format.  The front-end then parses and visualizes
+that trace and allows the user to single-step forwards AND backwards
+through execution.
+
+The back-end resides in the cgi-bin/ sub-directory in this repository:
+
+  cgi-bin/web_exec.py     - the CGI entrance point to the back-end
+  cgi-bin/web_run_test.py - the CGI entrance point to the question
+                            grading back-end
+  cgi-bin/pg_logger.py    - the 'meat' of the back-end
+  cgi-bin/pg_encoder.py   - encodes Python data into JSON
+  cgi-bin/create_db.py    - for optional sqlite query logging
+  cgi-bin/db_common.py    - for optional sqlite query logging
+  cgi-bin/.htaccess       - for Apache CGI execute permissions
+
+
+Due to the AJAX same-origin policy, the front-end and back-end must be
+deployed on the same server (unless you do some fancy proxy magic).
+
+
+======
+Original founding vision (from January 2010):
+
+I want to create a web-based interactive learning platform for students
+to explore programming.  I envision an HTML UI where a student can enter
+in code and then single-step through it and see how the data structures
+change during execution.
+
+Key insight: I realized that for the small programs that teachers and
+students write for educational purposes, it's possible to simply LOG
+everything that happens to data structures during execution.  Then we
+can simply play back that log in the front-end, which allows
+single-stepping forwards and also BACKWARDS.
+
+After all, we don't need students to be able to interactive probe and
+make changes in the middle of execution, which is the only value-added
+of a REAL debugger.
+
+What kinds of things do we want to log?
+
+  On the execution of each line, log:
+    - the line number just executed
+    - all data created by the program
+
+  Also log calls and returns of a student's function 
+  (but NOT library functions)
+
+We can use the Python JSON module to encode data structures in JSON and
+send it to the client's web browser
+
+The PDB debugger (Lib/pdb.py) is written in pure Python:
+  http://docs.python.org/library/pdb.html
+  - the bdb debugger framework is the C module that pdb calls
+    http://docs.python.org/library/bdb.html
+
diff --git a/TODO b/v1-v2/TODO
similarity index 100%
rename from TODO
rename to v1-v2/TODO
diff --git a/alias-screenshot.png b/v1-v2/alias-screenshot.png
similarity index 100%
rename from alias-screenshot.png
rename to v1-v2/alias-screenshot.png
diff --git a/cgi-bin/.htaccess b/v1-v2/cgi-bin/.htaccess
similarity index 100%
rename from cgi-bin/.htaccess
rename to v1-v2/cgi-bin/.htaccess
diff --git a/cgi-bin/create_db.py b/v1-v2/cgi-bin/create_db.py
similarity index 100%
rename from cgi-bin/create_db.py
rename to v1-v2/cgi-bin/create_db.py
diff --git a/cgi-bin/db_common.py b/v1-v2/cgi-bin/db_common.py
similarity index 100%
rename from cgi-bin/db_common.py
rename to v1-v2/cgi-bin/db_common.py
diff --git a/cgi-bin/index.html b/v1-v2/cgi-bin/index.html
similarity index 100%
rename from cgi-bin/index.html
rename to v1-v2/cgi-bin/index.html
diff --git a/v1-v2/cgi-bin/load_question.py b/v1-v2/cgi-bin/load_question.py
new file mode 100755
index 000000000..14d6522f8
--- /dev/null
+++ b/v1-v2/cgi-bin/load_question.py
@@ -0,0 +1,46 @@
+#!/usr/bin/python2.6
+
+# Online Python Tutor
+# https://github.com/pgbovine/OnlinePythonTutor/
+# 
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# Load a question file in the 'questions/' sub-directory, parse it,
+# and return it to the caller in JSON format
+QUESTIONS_DIR = '../questions/'
+
+from parse_questions import parseQuestionsFile
+
+import cgi, os, json
+
+form = cgi.FieldStorage()
+question_file = form['question_file'].value
+
+fn = QUESTIONS_DIR + question_file + '.txt'
+assert os.path.isfile(fn)
+
+
+# Crucial first line to make sure that Apache serves this data
+# correctly - DON'T FORGET THE EXTRA NEWLINES!!!:
+print "Content-type: text/plain; charset=iso-8859-1\n\n"
+print json.dumps(parseQuestionsFile(fn))
diff --git a/v1-v2/cgi-bin/p4_encoder.py b/v1-v2/cgi-bin/p4_encoder.py
new file mode 100755
index 000000000..4c28ac3de
--- /dev/null
+++ b/v1-v2/cgi-bin/p4_encoder.py
@@ -0,0 +1,192 @@
+#!/usr/bin/python3 -u
+
+# Python 3 version of encoder by David Pritchard, built upon work by Peter Wentworth
+# (diff with pg_encoder.py, which is for Python 2)
+
+
+# given an arbitrary piece of Python data, encode it in such a manner
+# that it can be later encoded into JSON.
+#   http://json.org/
+#
+# Format:
+#   * None, int, float, str, bool - unchanged  (long is removed in Python 3)
+#     (json.dumps encodes these fine verbatim)
+#   * list     - ['LIST', unique_id, elt1, elt2, elt3, ..., eltN]
+#   * tuple    - ['TUPLE', unique_id, elt1, elt2, elt3, ..., eltN]
+#   * set      - ['SET', unique_id, elt1, elt2, elt3, ..., eltN]
+#   * dict     - ['DICT', unique_id, [key1, value1], [key2, value2], ..., [keyN, valueN]]
+#   * instance - ['INSTANCE', class name, unique_id, [attr1, value1], [attr2, value2], ..., [attrN, valueN]]
+#   * class    - ['CLASS', class name, unique_id, [list of superclass names], [attr1, value1], [attr2, value2], ..., [attrN, valueN]]
+#   * circular reference - ['CIRCULAR_REF', unique_id]
+#   * other    - [<type name>, unique_id, string representation of object]
+#
+#
+# the unique_id is derived from id(), which allows us to explicitly
+# capture aliasing of compound values
+
+# Key: real ID from id()
+# Value: a small integer for greater readability, set by cur_small_id
+real_to_small_IDs = {}
+cur_small_id = 1
+
+import re, types
+#typeRE = re.compile("<type '(.*)'>")                 # not used in Python 3
+classRE = re.compile("<class '(.*)'>")
+functionRE = re.compile("<function (\w*) (.*)>")      # new case for Python 3
+
+# When we find a <class x> and x is in this list, don't confuse the beginner by listing the inner details
+native_types = ['int', 'float', 'str', 'tuple', 'list', 'set', 'dict', 'bool', 'NoneType', 'bytes', 'type', 'object']
+
+def encode(dat, ignore_id=False):
+
+  def append_attributes(ret, new_compound_obj_ids, dict):
+      """ Put attributes onto ret.   """
+      # traverse the __dict__ to grab attributes
+      # (filter out useless-seeming ones):
+
+      user_attrs = sorted([e for e in dict.keys()
+              if e not in {'__doc__', '__module__', '__return__', '__locals__',
+                           '__weakref__', '__dict__'}
+                         ])
+      for attr in user_attrs:
+        foo = [encode_helper(attr, new_compound_obj_ids),
+               encode_helper(dict[attr], new_compound_obj_ids)]
+        ret.append(foo)
+
+  def encode_helper(dat, compound_obj_ids):
+    # primitive type
+    if dat is None or  type(dat) in (int, float, str, bool):
+      return dat
+    # compound type
+    else:
+      my_id = id(dat)
+
+      global cur_small_id
+      if my_id not in real_to_small_IDs:
+        if ignore_id:
+          real_to_small_IDs[my_id] = 99999
+        else:
+          real_to_small_IDs[my_id] = cur_small_id
+        cur_small_id += 1
+
+      if my_id in compound_obj_ids:
+        return ['CIRCULAR_REF', real_to_small_IDs[my_id]]
+
+      new_compound_obj_ids = compound_obj_ids.union([my_id])
+
+      typ = type(dat)
+      obj_as_string = object.__repr__(dat)
+
+      my_small_id = real_to_small_IDs[my_id]
+
+      if typ == list:
+        ret = ['LIST', my_small_id]
+        for e in dat: ret.append(encode_helper(e, new_compound_obj_ids))
+      elif typ == tuple:
+        ret = ['TUPLE', my_small_id]
+        for e in dat: ret.append(encode_helper(e, new_compound_obj_ids))
+      elif typ == set:
+        ret = ['SET', my_small_id]
+        for e in dat: ret.append(encode_helper(e, new_compound_obj_ids))
+      elif typ == dict:
+        ret = ['DICT', my_small_id]
+        append_attributes(ret, new_compound_obj_ids, dat)
+
+      elif typ == type:    # its a class.  What a mess they made of it!
+            superclass_names = [e.__name__ for e in dat.__bases__]
+            ret = ['CLASS', dat.__name__, my_small_id, superclass_names]
+            if dat.__name__ not in native_types:
+                if hasattr(dat, '__dict__'):
+                    append_attributes(ret, new_compound_obj_ids, dat.__dict__)
+
+      elif repr(typ)[:6] == "<class" and obj_as_string.find('object') >= 0:    # is it  an instance?
+            ret = ['INSTANCE', dat.__class__.__name__, my_small_id]
+            if hasattr(dat, '__dict__'):
+                append_attributes(ret, new_compound_obj_ids, dat.__dict__)
+
+      else:
+        typeStr = repr(typ)
+        m = classRE.match(typeStr)
+        assert m, typ
+        ret = [m.group(1), my_small_id , obj_as_string]
+
+      return ret
+
+  return encode_helper(dat, set())
+
+
+if __name__ == '__main__':
+
+    def test(actual, expected=0):
+        """ Compare the actual to the expected value, and print a suitable message. """
+        import sys
+        linenum = sys._getframe(1).f_lineno         # get the caller's line number.
+        if (expected == actual):
+            msg = "Test on line %s passed." % (linenum)
+        else:
+            msg = "Test on line %s failed. Expected '%s', but got '%s'." % (linenum, expected, actual)
+        print(msg)
+
+    class P():
+        p_attr1 = 123
+        def p_method(self, x):
+            return 2*x
+
+    class Q(P):
+        pass
+
+    p1 = P()
+    q1 = Q()
+
+    addr = 1
+
+    test(encode("hello"),"hello")
+    test(encode(123),123)
+    test(encode(123.45),123.45)
+    test(encode(132432134423143132432134423143),132432134423143132432134423143)
+    test(encode(False),False)
+    test(encode(None),None)
+
+
+    test(encode((1,2)), ['TUPLE', addr, 1, 2])
+
+    addr += 1
+    test(encode([1,2]), ['LIST', addr, 1, 2])
+
+    addr += 1
+    test(encode({1:'mon'}), ['DICT', addr, [1, 'mon']])
+
+    addr += 1
+    test(encode(test), ['function', addr, 'test'])
+
+    addr += 1
+    test(encode(P), ['CLASS', 'P', addr, ['object'], ['p_attr1', 123], ['p_method', ['function', addr+1, 'p_method']]])
+
+    addr += 2
+    test(encode(Q), ['CLASS', 'Q', addr, ['P']])
+
+    addr += 1
+    test(encode(p1), ['INSTANCE', 'P', addr])
+
+    addr += 1
+    test(encode(q1), ['INSTANCE', 'Q', addr])
+
+    addr += 1
+    test(encode(min), ['builtin_function_or_method', addr, '<built-in function min>'] )
+
+    addr += 1
+    test(encode(range(1,3)), ['range', addr, 'range(1, 3)'])
+
+    addr += 1
+    test(encode({1,2}), ['SET', addr, 1, 2])
+
+    addr += 1
+    p = [1,2,3]
+    p.append(p)   # make a circular reference
+
+    test(encode(p), ['LIST', addr, 1, 2, 3, ['CIRCULAR_REF', addr]])
+
+# Need some new tests for  z = type(123)
+
+
+    print(encode({"stdout": "", "func_name": "<module>", "globals": {"sum": 0, "friends": ["LIST", 1, "Joe", "Bill"], "length": 3, "f": "Joe"}, "stack_locals": [], "line": 7, "event": "step_line"}))
diff --git a/cgi-bin/parse_questions.py b/v1-v2/cgi-bin/parse_questions.py
similarity index 65%
rename from cgi-bin/parse_questions.py
rename to v1-v2/cgi-bin/parse_questions.py
index 5a3935f19..392ab43ae 100644
--- a/cgi-bin/parse_questions.py
+++ b/v1-v2/cgi-bin/parse_questions.py
@@ -1,19 +1,27 @@
 # Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 # https://github.com/pgbovine/OnlinePythonTutor/
 # 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
 
 # Defines a function that parses an Online Python Tutor 'questions file'
 # into a dict, which can easily be converted into JSON
diff --git a/cgi-bin/pg_encoder.py b/v1-v2/cgi-bin/pg_encoder.py
similarity index 77%
rename from cgi-bin/pg_encoder.py
rename to v1-v2/cgi-bin/pg_encoder.py
index 2de1f97eb..01618dfe3 100644
--- a/cgi-bin/pg_encoder.py
+++ b/v1-v2/cgi-bin/pg_encoder.py
@@ -1,19 +1,26 @@
 # Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 # https://github.com/pgbovine/OnlinePythonTutor/
 # 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 # Given an arbitrary piece of Python data, encode it in such a manner
diff --git a/cgi-bin/pg_logger.py b/v1-v2/cgi-bin/pg_logger.py
similarity index 89%
rename from cgi-bin/pg_logger.py
rename to v1-v2/cgi-bin/pg_logger.py
index 6c948af52..673c3dbf6 100644
--- a/cgi-bin/pg_logger.py
+++ b/v1-v2/cgi-bin/pg_logger.py
@@ -1,19 +1,26 @@
 # Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 # https://github.com/pgbovine/OnlinePythonTutor/
 # 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 # This is the meat of the Online Python Tutor back-end.  It implements a
@@ -21,7 +28,7 @@
 # Python debugger imported via the bdb module), printing out the values
 # of all in-scope data structures after each executed instruction.
 
-# Note that I've only tested this logger on Python 2.5, so it will
+# Note that I've only tested this logger on Python 2.6, so it will
 # probably fail in subtle ways on other Python 2.X (and will DEFINITELY
 # fail on Python 3.X).
 
diff --git a/cgi-bin/run_tests.py b/v1-v2/cgi-bin/run_tests.py
similarity index 78%
rename from cgi-bin/run_tests.py
rename to v1-v2/cgi-bin/run_tests.py
index 550815736..221bea85e 100644
--- a/cgi-bin/run_tests.py
+++ b/v1-v2/cgi-bin/run_tests.py
@@ -1,19 +1,26 @@
 # Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 # https://github.com/pgbovine/OnlinePythonTutor/
 # 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 # Regression tests for Online Python Tutor back-end
@@ -23,7 +30,6 @@
 
 import os, sys, re, shutil, filecmp, optparse, difflib
 import pg_logger
-import demjson
 
 
 # all tests are found in this directory:
@@ -35,7 +41,7 @@
 def execute(test_script):
   def my_finalizer(output_lst):
     outfile = open(test_script[:-3] + '.out', 'w')
-    output_json = demjson.encode(output_lst, compactly=False)
+    output_json = json.dumps(output_lst)
     print >> outfile, output_json
 
   pg_logger.exec_script_str(open(test_script).read(), my_finalizer, True)
diff --git a/cgi-bin/web_exec.py b/v1-v2/cgi-bin/web_exec.py
similarity index 64%
rename from cgi-bin/web_exec.py
rename to v1-v2/cgi-bin/web_exec.py
index 4df13f30c..9debc60ec 100755
--- a/cgi-bin/web_exec.py
+++ b/v1-v2/cgi-bin/web_exec.py
@@ -1,21 +1,28 @@
-#!/usr/bin/python2.5
+#!/usr/bin/python2.6
 
 # Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 # https://github.com/pgbovine/OnlinePythonTutor/
 # 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 # Executes the Online Python Tutor back-end as a CGI script, which
@@ -24,8 +31,8 @@
 #
 # Returns a complete JSON execution trace to the front-end.
 #
-# This version uses Python 2.5 on the MIT CSAIL servers.
-# (note that Python 2.4 doesn't work on CSAIL, but Python 2.5 does)
+# This version uses Python 2.6 on the MIT CSAIL servers.
+# (note that Python 2.4 doesn't work on CSAIL, but Python 2.6 does)
 #
 # If you want to run this script, then you'll need to change the
 # shebang line at the top of this file to point to your system's Python.
@@ -43,9 +50,7 @@
 import cgi
 import pg_logger
 
-# Python 2.5 doesn't have a built-in json module, so I'm using a
-# 3rd-party module.  I think you can do 'import json' in Python >= 2.6
-import demjson
+import json
 
 if LOG_QUERIES:
   import os, time, db_common
@@ -53,7 +58,7 @@
 def web_finalizer(output_lst):
   # use compactly=False to produce human-readable JSON,
   # except at the expense of being a LARGER download
-  output_json = demjson.encode(output_lst, compactly=True)
+  output_json = json.dumps(output_lst)
 
   # query logging is optional
   if LOG_QUERIES:
diff --git a/cgi-bin/web_run_test.py b/v1-v2/cgi-bin/web_run_test.py
similarity index 77%
rename from cgi-bin/web_run_test.py
rename to v1-v2/cgi-bin/web_run_test.py
index c0ae45605..abe4592a6 100755
--- a/cgi-bin/web_run_test.py
+++ b/v1-v2/cgi-bin/web_run_test.py
@@ -1,21 +1,28 @@
-#!/usr/bin/python2.5
+#!/usr/bin/python2.6
 
 # Online Python Tutor
-# Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 # https://github.com/pgbovine/OnlinePythonTutor/
 # 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+# Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 # 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
 # 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
 # Runs both 'user_script' and 'expect_script' and returns whether the
@@ -26,9 +33,7 @@
 import cgi
 import pg_logger
 
-# Python 2.5 doesn't have a built-in json module, so I'm using a
-# 3rd-party module.  I think you can do 'import json' in Python >= 2.6
-import demjson
+import json
 
 user_trace = None # the FULL user trace (without any IDs, though)
 expect_trace_final_entry = None
@@ -60,7 +65,7 @@ def expect_script_finalizer(output_lst):
     # Crucial first line to make sure that Apache serves this data
     # correctly - DON'T FORGET THE EXTRA NEWLINES!!!:
     print "Content-type: text/plain; charset=iso-8859-1\n\n"
-    output_json = demjson.encode(ret, compactly=True)
+    output_json = json.dumps(ret)
     print output_json
 
   else:
@@ -122,7 +127,7 @@ def really_finalize():
   # Crucial first line to make sure that Apache serves this data
   # correctly - DON'T FORGET THE EXTRA NEWLINES!!!:
   print "Content-type: text/plain; charset=iso-8859-1\n\n"
-  output_json = demjson.encode(ret, compactly=True)
+  output_json = json.dumps(ret)
   print output_json
 
 
diff --git a/edu-python-questions.js b/v1-v2/edu-python-questions.js
similarity index 90%
rename from edu-python-questions.js
rename to v1-v2/edu-python-questions.js
index dab19bd6d..7c1933a21 100644
--- a/edu-python-questions.js
+++ b/v1-v2/edu-python-questions.js
@@ -1,21 +1,28 @@
 /*
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
@@ -52,8 +59,9 @@ function resetTestResults() {
 $(document).ready(function() {
   eduPythonCommonInit(); // must call this first!
 
-  $("#actualCodeInput").tabby(); // recognize TAB and SHIFT-TAB
-  $("#testCodeInput").tabby();   // recognize TAB and SHIFT-TAB
+  // this doesn't work since we need jquery.textarea.js ...
+  //$("#actualCodeInput").tabby(); // recognize TAB and SHIFT-TAB
+  //$("#testCodeInput").tabby();   // recognize TAB and SHIFT-TAB
 
 
   // be friendly to the browser's forward and back buttons
diff --git a/edu-python-title.css b/v1-v2/edu-python-title.css
similarity index 61%
rename from edu-python-title.css
rename to v1-v2/edu-python-title.css
index 55cb13448..9081041b8 100644
--- a/edu-python-title.css
+++ b/v1-v2/edu-python-title.css
@@ -1,21 +1,28 @@
 /*
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
diff --git a/edu-python-tutor.js b/v1-v2/edu-python-tutor.js
similarity index 82%
rename from edu-python-tutor.js
rename to v1-v2/edu-python-tutor.js
index 7905c3d57..7793f7818 100644
--- a/edu-python-tutor.js
+++ b/v1-v2/edu-python-tutor.js
@@ -1,21 +1,28 @@
 /*
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
@@ -40,7 +47,8 @@ function enterVisualizeMode(traceData) {
 $(document).ready(function() {
   eduPythonCommonInit(); // must call this first!
 
-  $("#pyInput").tabby(); // recognize TAB and SHIFT-TAB
+  // this doesn't work since we need jquery.textarea.js ...
+  //$("#pyInput").tabby(); // recognize TAB and SHIFT-TAB
 
 
   // be friendly to the browser's forward and back buttons
diff --git a/edu-python.css b/v1-v2/edu-python.css
similarity index 90%
rename from edu-python.css
rename to v1-v2/edu-python.css
index 5124fdf52..21d2ea64f 100644
--- a/edu-python.css
+++ b/v1-v2/edu-python.css
@@ -1,21 +1,28 @@
 /*
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
diff --git a/edu-python.js b/v1-v2/edu-python.js
similarity index 97%
rename from edu-python.js
rename to v1-v2/edu-python.js
index ee837e864..c5e2edaec 100644
--- a/edu-python.js
+++ b/v1-v2/edu-python.js
@@ -1,21 +1,28 @@
 /*
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 */
 
diff --git a/grading-375.png b/v1-v2/grading-375.png
similarity index 100%
rename from grading-375.png
rename to v1-v2/grading-375.png
diff --git a/hunt-mcilroy.js b/v1-v2/hunt-mcilroy.js
similarity index 100%
rename from hunt-mcilroy.js
rename to v1-v2/hunt-mcilroy.js
diff --git a/index.html b/v1-v2/index.html
similarity index 81%
rename from index.html
rename to v1-v2/index.html
index c7694a825..4952d4d48 100644
--- a/index.html
+++ b/v1-v2/index.html
@@ -4,21 +4,28 @@
 <!--
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
  -->
 
@@ -201,7 +208,7 @@ <h2>new practice problems in plain text format</h2>
 <div id="footer">
 
 <p>This application was created by <a
-href="http://www.stanford.edu/~pgbovine/">Philip Guo</a>, a
+href="http://www.pgbovine.net/">Philip Guo</a>, a
 Stanford Computer Science Ph.D. student and Python enthusiast.</p>
 
 <p>
@@ -212,7 +219,7 @@ <h2>new practice problems in plain text format</h2>
 </p>
 
 <p>
-Copyright &copy; 2010-2011 <a href="http://www.stanford.edu/~pgbovine/">Philip Guo</a>.  All rights reserved.
+Copyright &copy; 2010-2012 <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
 </p>
 
 </div>
diff --git a/jquery-1.3.2.min.js b/v1-v2/jquery-1.3.2.min.js
similarity index 100%
rename from jquery-1.3.2.min.js
rename to v1-v2/jquery-1.3.2.min.js
diff --git a/jquery.autogrow.js b/v1-v2/jquery.autogrow.js
similarity index 100%
rename from jquery.autogrow.js
rename to v1-v2/jquery.autogrow.js
diff --git a/jquery.ba-bbq.min.js b/v1-v2/jquery.ba-bbq.min.js
similarity index 100%
rename from jquery.ba-bbq.min.js
rename to v1-v2/jquery.ba-bbq.min.js
diff --git a/jquery.corner.js b/v1-v2/jquery.corner.js
similarity index 100%
rename from jquery.corner.js
rename to v1-v2/jquery.corner.js
diff --git a/jquery.jsPlumb-1.3.3-all-min.js b/v1-v2/jquery.jsPlumb-1.3.3-all-min.js
similarity index 100%
rename from jquery.jsPlumb-1.3.3-all-min.js
rename to v1-v2/jquery.jsPlumb-1.3.3-all-min.js
diff --git a/jquery.min.js b/v1-v2/jquery.min.js
similarity index 100%
rename from jquery.min.js
rename to v1-v2/jquery.min.js
diff --git a/jsplumb-test.js b/v1-v2/jsplumb-test.js
similarity index 100%
rename from jsplumb-test.js
rename to v1-v2/jsplumb-test.js
diff --git a/mock-data.js b/v1-v2/mock-data.js
similarity index 100%
rename from mock-data.js
rename to v1-v2/mock-data.js
diff --git a/question.html b/v1-v2/question.html
similarity index 78%
rename from question.html
rename to v1-v2/question.html
index 6ea6ea4d2..a60214513 100644
--- a/question.html
+++ b/v1-v2/question.html
@@ -4,21 +4,28 @@
 <!--
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
  -->
 
@@ -40,8 +47,6 @@
 
 <script type="text/javascript" src="jquery.ba-bbq.min.js"></script>
 
-<script type="text/javascript" src="jquery.textarea.js"></script>
-
 <!-- jsPlumb library for rendering connectors -->
 <script type="text/javascript" src="jquery.jsPlumb-1.3.3-all-min.js "></script>
 
@@ -195,7 +200,7 @@
 
 <p/>
 This application supports the core <a
-href="http://www.python.org/doc/2.5/">Python 2.5</a> language, with no
+href="http://docs.python.org/release/2.6/">Python 2.6</a> language, with no
 module imports or file I/O.  It's meant to be used as a platform for
 creating programming tutorials, not for running or debugging
 production code.
@@ -206,7 +211,7 @@
 repository and send bug reports, feedback, and suggestions to philip@pgbovine.net
 
 <p style="margin-top: 8px;"/>
-Copyright &copy; 2010-2011 <a href="http://www.stanford.edu/~pgbovine/">Philip Guo</a>.  All rights reserved.
+Copyright &copy; 2010-2012 <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
 </div>
 
 </center>
diff --git a/questions/debug-bsearch.txt b/v1-v2/questions/debug-bsearch.txt
similarity index 100%
rename from questions/debug-bsearch.txt
rename to v1-v2/questions/debug-bsearch.txt
diff --git a/questions/debug-ireverse.txt b/v1-v2/questions/debug-ireverse.txt
similarity index 100%
rename from questions/debug-ireverse.txt
rename to v1-v2/questions/debug-ireverse.txt
diff --git a/questions/debug-mergesort.txt b/v1-v2/questions/debug-mergesort.txt
similarity index 100%
rename from questions/debug-mergesort.txt
rename to v1-v2/questions/debug-mergesort.txt
diff --git a/questions/optimize-find-dups.txt b/v1-v2/questions/optimize-find-dups.txt
similarity index 100%
rename from questions/optimize-find-dups.txt
rename to v1-v2/questions/optimize-find-dups.txt
diff --git a/questions/optimize-search.txt b/v1-v2/questions/optimize-search.txt
similarity index 100%
rename from questions/optimize-search.txt
rename to v1-v2/questions/optimize-search.txt
diff --git a/questions/optimize-sum.txt b/v1-v2/questions/optimize-sum.txt
similarity index 100%
rename from questions/optimize-sum.txt
rename to v1-v2/questions/optimize-sum.txt
diff --git a/questions/remove-dups.txt b/v1-v2/questions/remove-dups.txt
similarity index 100%
rename from questions/remove-dups.txt
rename to v1-v2/questions/remove-dups.txt
diff --git a/questions/reverse.txt b/v1-v2/questions/reverse.txt
similarity index 100%
rename from questions/reverse.txt
rename to v1-v2/questions/reverse.txt
diff --git a/questions/two-sum.txt b/v1-v2/questions/two-sum.txt
similarity index 100%
rename from questions/two-sum.txt
rename to v1-v2/questions/two-sum.txt
diff --git a/red-sad-face.jpg b/v1-v2/red-sad-face.jpg
similarity index 100%
rename from red-sad-face.jpg
rename to v1-v2/red-sad-face.jpg
diff --git a/test-programs/caught_exception_1.golden b/v1-v2/test-programs/caught_exception_1.golden
similarity index 100%
rename from test-programs/caught_exception_1.golden
rename to v1-v2/test-programs/caught_exception_1.golden
diff --git a/test-programs/caught_exception_1.py b/v1-v2/test-programs/caught_exception_1.py
similarity index 100%
rename from test-programs/caught_exception_1.py
rename to v1-v2/test-programs/caught_exception_1.py
diff --git a/test-programs/caught_exception_2.golden b/v1-v2/test-programs/caught_exception_2.golden
similarity index 100%
rename from test-programs/caught_exception_2.golden
rename to v1-v2/test-programs/caught_exception_2.golden
diff --git a/test-programs/caught_exception_2.py b/v1-v2/test-programs/caught_exception_2.py
similarity index 100%
rename from test-programs/caught_exception_2.py
rename to v1-v2/test-programs/caught_exception_2.py
diff --git a/test-programs/circ_ref.golden b/v1-v2/test-programs/circ_ref.golden
similarity index 100%
rename from test-programs/circ_ref.golden
rename to v1-v2/test-programs/circ_ref.golden
diff --git a/test-programs/circ_ref.py b/v1-v2/test-programs/circ_ref.py
similarity index 100%
rename from test-programs/circ_ref.py
rename to v1-v2/test-programs/circ_ref.py
diff --git a/test-programs/circ_ref_2.golden b/v1-v2/test-programs/circ_ref_2.golden
similarity index 100%
rename from test-programs/circ_ref_2.golden
rename to v1-v2/test-programs/circ_ref_2.golden
diff --git a/test-programs/circ_ref_2.py b/v1-v2/test-programs/circ_ref_2.py
similarity index 100%
rename from test-programs/circ_ref_2.py
rename to v1-v2/test-programs/circ_ref_2.py
diff --git a/test-programs/circ_ref_fake.golden b/v1-v2/test-programs/circ_ref_fake.golden
similarity index 100%
rename from test-programs/circ_ref_fake.golden
rename to v1-v2/test-programs/circ_ref_fake.golden
diff --git a/test-programs/circ_ref_fake.py b/v1-v2/test-programs/circ_ref_fake.py
similarity index 100%
rename from test-programs/circ_ref_fake.py
rename to v1-v2/test-programs/circ_ref_fake.py
diff --git a/test-programs/class_test.golden b/v1-v2/test-programs/class_test.golden
similarity index 100%
rename from test-programs/class_test.golden
rename to v1-v2/test-programs/class_test.golden
diff --git a/test-programs/class_test.py b/v1-v2/test-programs/class_test.py
similarity index 100%
rename from test-programs/class_test.py
rename to v1-v2/test-programs/class_test.py
diff --git a/test-programs/class_test_2.golden b/v1-v2/test-programs/class_test_2.golden
similarity index 100%
rename from test-programs/class_test_2.golden
rename to v1-v2/test-programs/class_test_2.golden
diff --git a/test-programs/class_test_2.py b/v1-v2/test-programs/class_test_2.py
similarity index 100%
rename from test-programs/class_test_2.py
rename to v1-v2/test-programs/class_test_2.py
diff --git a/test-programs/class_test_3.golden b/v1-v2/test-programs/class_test_3.golden
similarity index 100%
rename from test-programs/class_test_3.golden
rename to v1-v2/test-programs/class_test_3.golden
diff --git a/test-programs/class_test_3.py b/v1-v2/test-programs/class_test_3.py
similarity index 100%
rename from test-programs/class_test_3.py
rename to v1-v2/test-programs/class_test_3.py
diff --git a/test-programs/data_test.golden b/v1-v2/test-programs/data_test.golden
similarity index 100%
rename from test-programs/data_test.golden
rename to v1-v2/test-programs/data_test.golden
diff --git a/test-programs/data_test.py b/v1-v2/test-programs/data_test.py
similarity index 100%
rename from test-programs/data_test.py
rename to v1-v2/test-programs/data_test.py
diff --git a/test-programs/dict_error.golden b/v1-v2/test-programs/dict_error.golden
similarity index 100%
rename from test-programs/dict_error.golden
rename to v1-v2/test-programs/dict_error.golden
diff --git a/test-programs/dict_error.py b/v1-v2/test-programs/dict_error.py
similarity index 100%
rename from test-programs/dict_error.py
rename to v1-v2/test-programs/dict_error.py
diff --git a/test-programs/dict_test.golden b/v1-v2/test-programs/dict_test.golden
similarity index 100%
rename from test-programs/dict_test.golden
rename to v1-v2/test-programs/dict_test.golden
diff --git a/test-programs/dict_test.py b/v1-v2/test-programs/dict_test.py
similarity index 100%
rename from test-programs/dict_test.py
rename to v1-v2/test-programs/dict_test.py
diff --git a/test-programs/exec_test.golden b/v1-v2/test-programs/exec_test.golden
similarity index 100%
rename from test-programs/exec_test.golden
rename to v1-v2/test-programs/exec_test.golden
diff --git a/test-programs/exec_test.py b/v1-v2/test-programs/exec_test.py
similarity index 100%
rename from test-programs/exec_test.py
rename to v1-v2/test-programs/exec_test.py
diff --git a/test-programs/func_exception.golden b/v1-v2/test-programs/func_exception.golden
similarity index 100%
rename from test-programs/func_exception.golden
rename to v1-v2/test-programs/func_exception.golden
diff --git a/test-programs/func_exception.py b/v1-v2/test-programs/func_exception.py
similarity index 100%
rename from test-programs/func_exception.py
rename to v1-v2/test-programs/func_exception.py
diff --git a/test-programs/generator_test.golden b/v1-v2/test-programs/generator_test.golden
similarity index 100%
rename from test-programs/generator_test.golden
rename to v1-v2/test-programs/generator_test.golden
diff --git a/test-programs/generator_test.py b/v1-v2/test-programs/generator_test.py
similarity index 100%
rename from test-programs/generator_test.py
rename to v1-v2/test-programs/generator_test.py
diff --git a/test-programs/import_error.golden b/v1-v2/test-programs/import_error.golden
similarity index 100%
rename from test-programs/import_error.golden
rename to v1-v2/test-programs/import_error.golden
diff --git a/test-programs/import_error.py b/v1-v2/test-programs/import_error.py
similarity index 100%
rename from test-programs/import_error.py
rename to v1-v2/test-programs/import_error.py
diff --git a/test-programs/infinite_loop.golden b/v1-v2/test-programs/infinite_loop.golden
similarity index 100%
rename from test-programs/infinite_loop.golden
rename to v1-v2/test-programs/infinite_loop.golden
diff --git a/test-programs/infinite_loop.py b/v1-v2/test-programs/infinite_loop.py
similarity index 100%
rename from test-programs/infinite_loop.py
rename to v1-v2/test-programs/infinite_loop.py
diff --git a/test-programs/infinite_loop_one_liner.golden b/v1-v2/test-programs/infinite_loop_one_liner.golden
similarity index 100%
rename from test-programs/infinite_loop_one_liner.golden
rename to v1-v2/test-programs/infinite_loop_one_liner.golden
diff --git a/test-programs/infinite_loop_one_liner.py b/v1-v2/test-programs/infinite_loop_one_liner.py
similarity index 100%
rename from test-programs/infinite_loop_one_liner.py
rename to v1-v2/test-programs/infinite_loop_one_liner.py
diff --git a/test-programs/lambda_1.golden b/v1-v2/test-programs/lambda_1.golden
similarity index 100%
rename from test-programs/lambda_1.golden
rename to v1-v2/test-programs/lambda_1.golden
diff --git a/test-programs/lambda_1.py b/v1-v2/test-programs/lambda_1.py
similarity index 100%
rename from test-programs/lambda_1.py
rename to v1-v2/test-programs/lambda_1.py
diff --git a/test-programs/list_dict_test.golden b/v1-v2/test-programs/list_dict_test.golden
similarity index 100%
rename from test-programs/list_dict_test.golden
rename to v1-v2/test-programs/list_dict_test.golden
diff --git a/test-programs/list_dict_test.py b/v1-v2/test-programs/list_dict_test.py
similarity index 100%
rename from test-programs/list_dict_test.py
rename to v1-v2/test-programs/list_dict_test.py
diff --git a/test-programs/list_test.golden b/v1-v2/test-programs/list_test.golden
similarity index 100%
rename from test-programs/list_test.golden
rename to v1-v2/test-programs/list_test.golden
diff --git a/test-programs/list_test.py b/v1-v2/test-programs/list_test.py
similarity index 100%
rename from test-programs/list_test.py
rename to v1-v2/test-programs/list_test.py
diff --git a/test-programs/newstyle_class.golden b/v1-v2/test-programs/newstyle_class.golden
similarity index 100%
rename from test-programs/newstyle_class.golden
rename to v1-v2/test-programs/newstyle_class.golden
diff --git a/test-programs/newstyle_class.py b/v1-v2/test-programs/newstyle_class.py
similarity index 100%
rename from test-programs/newstyle_class.py
rename to v1-v2/test-programs/newstyle_class.py
diff --git a/test-programs/one_func.golden b/v1-v2/test-programs/one_func.golden
similarity index 100%
rename from test-programs/one_func.golden
rename to v1-v2/test-programs/one_func.golden
diff --git a/test-programs/one_func.py b/v1-v2/test-programs/one_func.py
similarity index 100%
rename from test-programs/one_func.py
rename to v1-v2/test-programs/one_func.py
diff --git a/test-programs/open_error.golden b/v1-v2/test-programs/open_error.golden
similarity index 100%
rename from test-programs/open_error.golden
rename to v1-v2/test-programs/open_error.golden
diff --git a/test-programs/open_error.py b/v1-v2/test-programs/open_error.py
similarity index 100%
rename from test-programs/open_error.py
rename to v1-v2/test-programs/open_error.py
diff --git a/test-programs/parse_error.golden b/v1-v2/test-programs/parse_error.golden
similarity index 100%
rename from test-programs/parse_error.golden
rename to v1-v2/test-programs/parse_error.golden
diff --git a/test-programs/parse_error.py b/v1-v2/test-programs/parse_error.py
similarity index 100%
rename from test-programs/parse_error.py
rename to v1-v2/test-programs/parse_error.py
diff --git a/test-programs/parse_error_2.golden b/v1-v2/test-programs/parse_error_2.golden
similarity index 100%
rename from test-programs/parse_error_2.golden
rename to v1-v2/test-programs/parse_error_2.golden
diff --git a/test-programs/parse_error_2.py b/v1-v2/test-programs/parse_error_2.py
similarity index 100%
rename from test-programs/parse_error_2.py
rename to v1-v2/test-programs/parse_error_2.py
diff --git a/test-programs/parse_error_3.golden b/v1-v2/test-programs/parse_error_3.golden
similarity index 100%
rename from test-programs/parse_error_3.golden
rename to v1-v2/test-programs/parse_error_3.golden
diff --git a/test-programs/parse_error_3.py b/v1-v2/test-programs/parse_error_3.py
similarity index 100%
rename from test-programs/parse_error_3.py
rename to v1-v2/test-programs/parse_error_3.py
diff --git a/test-programs/print_builtins_error.golden b/v1-v2/test-programs/print_builtins_error.golden
similarity index 100%
rename from test-programs/print_builtins_error.golden
rename to v1-v2/test-programs/print_builtins_error.golden
diff --git a/test-programs/print_builtins_error.py b/v1-v2/test-programs/print_builtins_error.py
similarity index 100%
rename from test-programs/print_builtins_error.py
rename to v1-v2/test-programs/print_builtins_error.py
diff --git a/test-programs/runtime_error.golden b/v1-v2/test-programs/runtime_error.golden
similarity index 100%
rename from test-programs/runtime_error.golden
rename to v1-v2/test-programs/runtime_error.golden
diff --git a/test-programs/runtime_error.py b/v1-v2/test-programs/runtime_error.py
similarity index 100%
rename from test-programs/runtime_error.py
rename to v1-v2/test-programs/runtime_error.py
diff --git a/test-programs/set_test.golden b/v1-v2/test-programs/set_test.golden
similarity index 100%
rename from test-programs/set_test.golden
rename to v1-v2/test-programs/set_test.golden
diff --git a/test-programs/set_test.py b/v1-v2/test-programs/set_test.py
similarity index 100%
rename from test-programs/set_test.py
rename to v1-v2/test-programs/set_test.py
diff --git a/test-programs/simple.golden b/v1-v2/test-programs/simple.golden
similarity index 100%
rename from test-programs/simple.golden
rename to v1-v2/test-programs/simple.golden
diff --git a/test-programs/simple.py b/v1-v2/test-programs/simple.py
similarity index 100%
rename from test-programs/simple.py
rename to v1-v2/test-programs/simple.py
diff --git a/test-programs/three_lists.golden b/v1-v2/test-programs/three_lists.golden
similarity index 100%
rename from test-programs/three_lists.golden
rename to v1-v2/test-programs/three_lists.golden
diff --git a/test-programs/three_lists.py b/v1-v2/test-programs/three_lists.py
similarity index 100%
rename from test-programs/three_lists.py
rename to v1-v2/test-programs/three_lists.py
diff --git a/test-programs/tuple_test.golden b/v1-v2/test-programs/tuple_test.golden
similarity index 100%
rename from test-programs/tuple_test.golden
rename to v1-v2/test-programs/tuple_test.golden
diff --git a/test-programs/tuple_test.py b/v1-v2/test-programs/tuple_test.py
similarity index 100%
rename from test-programs/tuple_test.py
rename to v1-v2/test-programs/tuple_test.py
diff --git a/test-programs/two_funcs.golden b/v1-v2/test-programs/two_funcs.golden
similarity index 100%
rename from test-programs/two_funcs.golden
rename to v1-v2/test-programs/two_funcs.golden
diff --git a/test-programs/two_funcs.py b/v1-v2/test-programs/two_funcs.py
similarity index 100%
rename from test-programs/two_funcs.py
rename to v1-v2/test-programs/two_funcs.py
diff --git a/tutor.html b/v1-v2/tutor.html
similarity index 76%
rename from tutor.html
rename to v1-v2/tutor.html
index eaa8c4913..6a39233d0 100644
--- a/tutor.html
+++ b/v1-v2/tutor.html
@@ -4,21 +4,28 @@
 <!--
 
 Online Python Tutor
-Copyright (C) 2010-2011 Philip J. Guo (philip@pgbovine.net)
 https://github.com/pgbovine/OnlinePythonTutor/
 
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+Copyright (C) 2010-2012 Philip J. Guo (philip@pgbovine.net)
 
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
 
-You should have received a copy of the GNU General Public License
-along with this program.  If not, see <http://www.gnu.org/licenses/>.
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
  -->
 
@@ -45,8 +52,6 @@
 
 <script type="text/javascript" src="jquery.ba-bbq.min.js"></script>
 
-<script type="text/javascript" src="jquery.textarea.js"></script>
-
 <!-- disable autogrow for simplicity
   <script type="text/javascript" src="jquery.autogrow.js"></script>
  -->
@@ -109,7 +114,7 @@
 </p>
 
 <p style="margin-top: 25px;">
-Then try some programming questions:<br/>
+Then try some sample programming questions:<br/>
 Solve:
 <a href="question.html?two-sum">Two-sum</a> |
 <a href="question.html?reverse">Reverse list</a> |
@@ -190,15 +195,15 @@
 
 <p/>
 This application supports the core <a
-href="http://www.python.org/doc/2.5/">Python 2.5</a> language, with no
+href="http://docs.python.org/release/2.6/">Python 2.6</a> language, with no
 module imports or file I/O.  It's meant to be used as a platform for
 creating programming tutorials, not for running or debugging
 production code.
 
 <p style="margin-top: 8px;"/>Official Python 3 support is coming soon;
-for now, try the <a
-href="http://netserv.ict.ru.ac.za/python3_viz/">Python 3 fork</a> by
-Peter Wentworth.
+for now, try the Python 3 forks by <a
+href="http://cscircles.cemc.uwaterloo.ca/visualize/">CS Circles</a> and
+<a href="http://netserv.ict.ru.ac.za/python3_viz/">Peter Wentworth</a>.
 
 <p style="margin-top: 8px;"/> 
 Check out the <a
@@ -206,11 +211,10 @@
 repository and send bug reports, feedback, and suggestions to philip@pgbovine.net
 
 <p style="margin-top: 8px;"/>
-Copyright &copy; 2010-2011 <a href="http://www.stanford.edu/~pgbovine/">Philip Guo</a>.  All rights reserved.
+Copyright &copy; 2010-2012 <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
 </div>
 
 </center>
 
 </body>
 </html>
-
diff --git a/tutorials/MIT-6.01/README b/v1-v2/tutorials/MIT-6.01/README
similarity index 100%
rename from tutorials/MIT-6.01/README
rename to v1-v2/tutorials/MIT-6.01/README
diff --git a/tutorials/MIT-6.01/map.py b/v1-v2/tutorials/MIT-6.01/map.py
similarity index 100%
rename from tutorials/MIT-6.01/map.py
rename to v1-v2/tutorials/MIT-6.01/map.py
diff --git a/tutorials/MIT-6.01/oop_1.py b/v1-v2/tutorials/MIT-6.01/oop_1.py
similarity index 100%
rename from tutorials/MIT-6.01/oop_1.py
rename to v1-v2/tutorials/MIT-6.01/oop_1.py
diff --git a/tutorials/MIT-6.01/oop_2.py b/v1-v2/tutorials/MIT-6.01/oop_2.py
similarity index 100%
rename from tutorials/MIT-6.01/oop_2.py
rename to v1-v2/tutorials/MIT-6.01/oop_2.py
diff --git a/tutorials/MIT-6.01/oop_3.py b/v1-v2/tutorials/MIT-6.01/oop_3.py
similarity index 100%
rename from tutorials/MIT-6.01/oop_3.py
rename to v1-v2/tutorials/MIT-6.01/oop_3.py
diff --git a/tutorials/MIT-6.01/summation.py b/v1-v2/tutorials/MIT-6.01/summation.py
similarity index 100%
rename from tutorials/MIT-6.01/summation.py
rename to v1-v2/tutorials/MIT-6.01/summation.py
diff --git a/tutorials/README b/v1-v2/tutorials/README
similarity index 100%
rename from tutorials/README
rename to v1-v2/tutorials/README
diff --git a/tutorials/advanced/map.py b/v1-v2/tutorials/advanced/map.py
similarity index 100%
rename from tutorials/advanced/map.py
rename to v1-v2/tutorials/advanced/map.py
diff --git a/tutorials/math/newton.py b/v1-v2/tutorials/math/newton.py
similarity index 100%
rename from tutorials/math/newton.py
rename to v1-v2/tutorials/math/newton.py
diff --git a/tutorials/oop/oop_demo.py b/v1-v2/tutorials/oop/oop_demo.py
similarity index 100%
rename from tutorials/oop/oop_demo.py
rename to v1-v2/tutorials/oop/oop_demo.py
diff --git a/tutorials/personal-finance/compound_interest.py b/v1-v2/tutorials/personal-finance/compound_interest.py
similarity index 100%
rename from tutorials/personal-finance/compound_interest.py
rename to v1-v2/tutorials/personal-finance/compound_interest.py
diff --git a/yellow-happy-face.png b/v1-v2/yellow-happy-face.png
similarity index 100%
rename from yellow-happy-face.png
rename to v1-v2/yellow-happy-face.png
diff --git a/v3/GChartWrapper/GChart.py b/v3/GChartWrapper/GChart.py
new file mode 100644
index 000000000..275fa544d
--- /dev/null
+++ b/v3/GChartWrapper/GChart.py
@@ -0,0 +1,782 @@
+# (modified by Philip Guo to remove utf-8 dependencies and unnecessary imports)
+
+################################################################################
+#  GChartWrapper - v0.8
+#  Copyright (C) 2009  Justin Quick <justquick@gmail.com>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License version 3 as published
+#  by the Free Software Foundation.
+#
+#  Thanks to anyone who does anything for this project.
+#  If you have even the smallest revision, please email me at above address.
+################################################################################
+"""
+GChartWrapper - Google Chart API Wrapper
+
+The wrapper can render the URL of the Google chart based on your parameters.
+With the chart you can render an HTML img tag to insert into webpages on the fly,
+show it directly in a webbrowser, or save the chart PNG to disk. New versions
+can generate PIL PngImage instances.
+
+Example
+
+    >>> G = GChart('lc',['simpleisbetterthancomplexcomplexisbetterthancomplicated'])
+    >>> G.title('The Zen of Python','00cc00',36)
+    >>> G.color('00cc00')
+    >>> str(G)
+    'http://chart.apis.google.com/chart?
+        chd=e:simpleisbetterthancomplexcomplexisbetterthancomplicated
+        &chs=300x150
+        &cht=lc
+        &chtt=The+Zen+of+Python'    
+    >>> G.image() # PIL instance
+    <PngImagePlugin.PngImageFile instance at ...>
+    >>> 1#G.show() # Webbrowser open
+    True
+    >>> G.save('tmp.png') # Save to disk
+    'tmp.png'
+
+See tests.py for unit test and other examples
+"""
+from GChartWrapper.constants import *
+from GChartWrapper.encoding import Encoder
+from copy import copy
+
+def lookup_color(color):
+    """
+    Returns the hex color for any valid css color name
+    
+    >>> lookup_color('aliceblue')
+    'F0F8FF'
+    """
+    if color is None: return
+    color = color.lower()
+    if color in COLOR_MAP:
+        return COLOR_MAP[color]
+    return color
+
+def color_args(args, *indexes):
+    """
+    Color a list of arguments on particular indexes
+    
+    >>> c = color_args([None,'blue'], 1)
+    >>> c.next()
+    None
+    >>> c.next()
+    '0000FF'
+    """
+    for i,arg in enumerate(args):
+        if i in indexes:
+            yield lookup_color(arg)
+        else:
+            yield arg
+
+
+class Axes(dict):
+    """
+    Axes attribute dictionary storage
+
+    Use this class via GChart(...).axes
+    Methods are taken one at a time, like so:
+    
+    >>> G = GChart()
+    >>> G.axes.type('xy')
+    {}
+    >>> G.axes.label(1,'Label1') # X Axis
+    {}
+    >>> G.axes.label(2,'Label2') # Y Axis
+    {}
+    """
+    def __init__(self, parent):
+        self.parent = parent
+        self.data = {'ticks':[],'labels':[],'positions':[],
+            'ranges':[],'styles':[]}
+        dict.__init__(self)
+
+    def tick(self, index, length):
+        """
+        Add tick marks in order of axes by width
+        APIPARAM: chxtc     <axis index>,<length of tick mark>
+        """
+        assert int(length) <= 25, 'Width cannot be more than 25'
+        self.data['ticks'].append('%s,%d'%(index,length))
+        return self.parent
+    
+    def type(self, atype):
+        """
+        Define the type of axes you wish to use
+        atype must be one of x,t,y,r
+        APIPARAM: chxt
+        """
+        for char in atype:
+            assert char in 'xtyr', 'Invalid axes type: %s'%char
+        if not ',' in atype:
+            atype = ','.join(atype)
+        self['chxt'] = atype
+        return self.parent
+    __call__ = type
+    
+    def label(self, index, *args):
+        """
+        Label each axes one at a time
+        args are of the form <label 1>,...,<label n>
+        APIPARAM: chxl
+        """
+        self.data['labels'].append(
+            str('%s:|%s'%(index, '|'.join(map(str,args)) )).replace('None','')
+        )
+        return self.parent
+        
+    def position(self, index, *args):
+        """
+        Set the label position of each axis, one at a time
+        args are of the form <label position 1>,...,<label position n>
+        APIPARAM: chxp
+        """
+        self.data['positions'].append(
+            str('%s,%s'%(index, ','.join(map(str,args)))).replace('None','')
+        )
+        return self.parent
+        
+    def range(self, index, *args):
+        """
+        Set the range of each axis, one at a time
+        args are of the form <start of range>,<end of range>,<interval>
+        APIPARAM: chxr
+        """
+        self.data['ranges'].append('%s,%s'%(index,
+                                    ','.join(map(smart_str, args))))
+        return self.parent
+        
+    def style(self, index, *args):
+        """
+        Add style to your axis, one at a time
+        args are of the form::
+            <axis color>,
+            <font size>,
+            <alignment>,
+            <drawing control>,
+            <tick mark color>
+        APIPARAM: chxs
+        """
+        args = color_args(args, 0)
+        self.data['styles'].append(
+            ','.join([str(index)]+list(map(str,args)))
+        )
+        return self.parent
+
+    def render(self):
+        """Render the axes data into the dict data"""
+        for opt,values in self.data.items():
+            if opt == 'ticks':
+                self['chxtc'] = '|'.join(values)
+            else:
+                self['chx%s'%opt[0]] = '|'.join(values)
+        return self    
+        
+class GChart(dict):
+    """Main chart class
+
+    Chart type must be valid for cht parameter
+    Dataset can be any python iterable and be multi dimensional
+    Kwargs will be put into chart API params if valid"""
+    def __init__(self, ctype=None, dataset=[], **kwargs):
+        self._series = kwargs.pop('series',None)
+        self.lines,self.fills,self.markers,self.scales = [],[],[],[]
+        self._geo,self._ld = '',''
+        self._dataset = dataset
+        dict.__init__(self)
+        if ctype:
+            self['cht'] = self.check_type(ctype)
+        self._encoding = kwargs.pop('encoding', None)
+        self._scale = kwargs.pop('scale', None)
+        self._apiurl = kwargs.pop('apiurl', APIURL)
+        for k in kwargs:
+            assert k in APIPARAMS, 'Invalid chart parameter: %s' % k
+        self.update(kwargs)
+        self.axes = Axes(self)
+    
+    @classmethod
+    def fromurl(cls, qs):
+        """
+        Reverse a chart URL or dict into a GChart instance
+        
+        >>> G = GChart.fromurl('http://chart.apis.google.com/chart?...')
+        >>> G
+        <GChartWrapper.GChart instance at...>
+        >>> G.image().save('chart.jpg','JPEG')
+        """
+        if isinstance(qs, dict):
+            return cls(**qs)
+        return cls(**dict(parse_qsl(qs[qs.index('?')+1:])))
+        
+    ###################
+    # Callables
+    ###################
+    def map(self, geo, country_codes):
+        """
+        Creates a map of the defined geography with the given country/state codes
+        Geography choices are africa, asia, europe, middle_east, south_america, and world
+        ISO country codes can be found at http://code.google.com/apis/chart/isocodes.html
+        US state codes can be found at http://code.google.com/apis/chart/statecodes.html
+        APIPARAMS: chtm & chld
+        """
+        assert geo in GEO, 'Geograpic area %s not recognized'%geo
+        self._geo = geo
+        self._ld = country_codes
+        return self
+        
+    def level_data(self, *args):
+        """
+        Just used in QRCode for the moment
+        args are error_correction,margin_size
+        APIPARAM: chld
+        """
+        assert args[0].lower() in 'lmqh', 'Unknown EC level %s'%level
+        self['chld'] = '%s|%s'%args
+        return self
+        
+    def bar(self, *args):
+        """
+        For bar charts, specify bar thickness and spacing with the args
+        args are <bar width>,<space between bars>,<space between groups>
+        bar width can be relative or absolute, see the official doc
+        APIPARAM: chbh
+        """
+        self['chbh'] = ','.join(map(str,args))
+        return self
+        
+    def encoding(self, arg):
+        """
+        Specifies the encoding to be used for the Encoder
+        Must be one of 'simple','text', or 'extended'
+        """
+        self._encoding = arg
+        return self
+        
+    def output_encoding(self, encoding):
+        """
+        Output encoding to use for QRCode encoding
+        Must be one of 'Shift_JIS','UTF-8', or 'ISO-8859-1'
+        APIPARAM: choe
+        """
+        assert encoding in ('Shift_JIS','UTF-8','ISO-8859-1'),\
+            'Unknown encoding %s'%encoding
+        self['choe'] = encoding
+        return self
+        
+    def scale(self, *args):
+        """
+        Scales the data down to the given size
+        args must be of the form::
+            <data set 1 minimum value>,
+            <data set 1 maximum value>,
+            <data set n minimum value>,
+            <data set n maximum value>
+        will only work with text encoding!
+        APIPARAM: chds
+        """
+        self._scale =  [','.join(map(smart_str, args))]
+        return self
+        
+    def dataset(self, data, series=''):
+        """
+        Update the chart's dataset, can be two dimensional or contain string data
+        """
+        self._dataset = data
+        self._series = series
+        return self
+        
+    def marker(self, *args):
+        """
+        Defines markers one at a time for your graph
+        args are of the form::
+            <marker type>,
+            <color>,
+            <data set index>,
+            <data point>,
+            <size>,
+            <priority>
+        see the official developers doc for the complete spec
+        APIPARAM: chm
+        """
+        if len(args[0]) == 1:
+            assert args[0] in MARKERS, 'Invalid marker type: %s'%args[0]
+        assert len(args) <= 6, 'Incorrect arguments %s'%str(args)
+        args = color_args(args, 1)
+        self.markers.append(','.join(map(str,args)) )
+        return self
+        
+    def margin(self, left, right, top, bottom, lwidth=0, lheight=0):
+        """
+        Set margins for chart area
+        args are of the form::
+            <left margin>,
+            <right margin>,
+            <top margin>,
+            <bottom margin>|
+            <legend width>,
+            <legend height>
+        
+        APIPARAM: chma
+        """
+        self['chma'] = '%d,%d,%d,%d'  % (left, right, top, bottom)
+        if lwidth or lheight:
+            self['chma'] += '|%d,%d' % (lwidth, lheight)
+        return self
+    
+    def line(self, *args):
+        """
+        Called one at a time for each dataset
+        args are of the form::
+            <data set n line thickness>,
+            <length of line segment>,
+            <length of blank segment>
+        APIPARAM: chls
+        """
+        self.lines.append(','.join(['%.1f'%x for x in map(float,args)]))
+        return self
+        
+    def fill(self, *args):
+        """
+        Apply a solid fill to your chart
+        args are of the form <fill type>,<fill style>,...
+        fill type must be one of c,bg,a
+        fill style must be one of s,lg,ls
+        the rest of the args refer to the particular style
+        APIPARAM: chf
+        """
+        a,b = args[:2]
+        assert a in ('c','bg','a'), 'Fill type must be bg/c/a not %s'%a
+        assert b in ('s','lg','ls'), 'Fill style must be s/lg/ls not %s'%b
+        if len(args) == 3:
+            args = color_args(args, 2)
+        else:
+            args = color_args(args, 3,5)
+        self.fills.append(','.join(map(str,args)))
+        return self
+        
+    def grid(self, *args):
+        """
+        Apply a grid to your chart
+        args are of the form::
+            <x axis step size>,
+            <y axis step size>,
+            <length of line segment>,
+            <length of blank segment>
+            <x offset>,
+            <y offset>
+        APIPARAM: chg
+        """
+        grids =  map(str,map(float,args))
+        self['chg'] = ','.join(grids).replace('None','')
+        return self
+        
+    def color(self, *args):
+        """
+        Add a color for each dataset
+        args are of the form <color 1>,...<color n>
+        APIPARAM: chco
+        """
+        args = color_args(args, *range(len(args)))
+        self['chco'] = ','.join(args)
+        return self
+        
+    def type(self, type):
+        """
+        Set the chart type, either Google API type or regular name
+        APIPARAM: cht
+        """
+        self['cht'] = self.check_type(str(type))
+        return self
+        
+    def label(self, *args):
+        """
+        Add a simple label to your chart
+        call each time for each dataset
+        APIPARAM: chl
+        """
+        if self['cht'] == 'qr':
+            self['chl'] = ''.join(map(str,args))
+        else:
+            self['chl'] = '|'.join(map(str,args))
+        return self
+        
+    def legend(self, *args):
+        """
+        Add a legend to your chart
+        call each time for each dataset
+        APIPARAM: chdl
+        """
+        self['chdl'] = '|'.join(args)
+        return self
+        
+    def legend_pos(self, pos):
+        """
+        Define a position for your legend to occupy
+        APIPARAM: chdlp
+        """
+        assert pos in LEGEND_POSITIONS, 'Unknown legend position: %s'%pos
+        self['chdlp'] = str(pos)
+        return self
+        
+    def title(self, title, *args):
+        """
+        Add a title to your chart
+        args are optional style params of the form <color>,<font size>
+        APIPARAMS: chtt,chts
+        """
+        self['chtt'] = title
+        if args:
+            args = color_args(args, 0)
+            self['chts'] = ','.join(map(str,args))
+        return self
+
+    def size(self,*args):
+        """
+        Set the size of the chart, args are width,height and can be tuple
+        APIPARAM: chs
+        """
+        if len(args) == 2:
+            x,y = map(int,args)
+        else:
+            x,y = map(int,args[0])
+        self.check_size(x,y)
+        self['chs'] = '%dx%d'%(x,y)
+        return self
+   
+    def orientation(self, angle):
+        """
+        Set the chart dataset orientation
+        angle is <angle in radians>
+        APIPARAM: chp
+        """
+        self['chp'] = '%f'%angle
+        return self
+    position = orientation
+    
+    def render(self):
+        """
+        Renders the chart context and axes into the dict data
+        """
+        self.update(self.axes.render())
+        encoder = Encoder(self._encoding, None, self._series)
+        if not 'chs' in self:
+            self['chs'] = '300x150'
+        else:
+            size = self['chs'].split('x')
+            assert len(size) == 2, 'Invalid size, must be in the format WxH'
+            self.check_size(*map(int,size))
+        assert 'cht' in self, 'No chart type defined, use type method'
+        self['cht'] = self.check_type(self['cht'])
+        if ('any' in dir(self._dataset) and self._dataset.any()) or self._dataset:
+            self['chd'] = encoder.encode(self._dataset)
+        elif not 'choe' in self:
+            assert 'chd' in self, 'You must have a dataset, or use chd'
+        if self._scale:
+            assert self['chd'].startswith('t'),\
+                'You must use text encoding with chds'
+            self['chds'] = ','.join(self._scale)
+        if self._geo and self._ld:
+            self['chtm'] = self._geo
+            self['chld'] = self._ld
+        if self.lines:
+            self['chls'] = '|'.join(self.lines)
+        if self.markers:
+            self['chm'] = '|'.join(self.markers)
+        if self.fills:
+            self['chf'] = '|'.join(self.fills)
+
+    ###################
+    # Checks
+    ###################
+    def check_size(self,x,y):
+        """
+        Make sure the chart size fits the standards
+        """
+        assert x <= 1000, 'Width larger than 1,000'
+        assert y <= 1000, 'Height larger than 1,000'
+        assert x*y <= 300000, 'Resolution larger than 300,000'
+        
+    def check_type(self, type):
+        """Check to see if the type is either in TYPES or fits type name
+
+        Returns proper type
+        """
+        if type in TYPES:
+            return type
+        tdict = dict(zip(TYPES,TYPES))
+        tdict.update({
+            'line': 'lc',
+            'bar': 'bvs',
+            'pie': 'p',
+            'venn': 'v',
+            'scater': 's',
+            'radar': 'r',
+            'meter': 'gom',
+        })
+        assert type in tdict, 'Invalid chart type: %s'%type
+        return tdict[type]
+
+    #####################
+    # Convience Functions
+    #####################     
+    def getname(self):
+        """
+        Gets the name of the chart, if it exists
+        """
+        return self.get('chtt','')
+
+    def getdata(self):
+        """
+        Returns the decoded dataset from chd param
+        """
+        #XXX: Why again? not even sure decode works well
+        return Encoder(self._encoding).decode(self['chd'])
+
+    def _parts(self):
+        return ('%s=%s'%(k,smart_str(v)) for k,v in self.items() if v)
+
+    def __str__(self):
+        return self.url
+    
+    def __repr__(self):
+        return '<GChartWrapper.%s %s>'%(self.__class__.__name__,self)
+    
+    @property
+    def url(self):
+        """
+        Returns the rendered URL of the chart
+        """
+        self.render()        
+        return self._apiurl + '&'.join(self._parts()).replace(' ','+')
+
+
+    # pgbovine - disable this function
+    '''
+    def show(self, *args, **kwargs):
+        """
+        Shows the chart URL in a webbrowser
+
+        Other arguments passed to webbrowser.open
+        """
+        from webbrowser import open as webopen
+        return webopen(str(self), *args, **kwargs)
+    '''
+
+    def save(self, fname=None):
+        """
+        Download the chart from the URL into a filename as a PNG
+
+        The filename defaults to the chart title (chtt) if any
+        """
+        if not fname:
+            fname = self.getname()
+        assert fname != None, 'You must specify a filename to save to'
+        if not fname.endswith('.png'):
+            fname += '.png'
+        try:
+            urlretrieve(self.url, fname)
+        except Exception:
+            raise IOError('Problem saving %s to file'%fname)
+        return fname
+
+    def img(self, **kwargs):
+        """ 
+        Returns an XHTML <img/> tag of the chart
+
+        kwargs can be other img tag attributes, which are strictly enforced
+        uses strict escaping on the url, necessary for proper XHTML
+        """       
+        safe = 'src="%s" ' % self.url.replace('&','&amp;').replace('<', '&lt;')\
+            .replace('>', '&gt;').replace('"', '&quot;').replace( "'", '&#39;')
+        for item in kwargs.items():
+            if not item[0] in IMGATTRS:
+                raise AttributeError('Invalid img tag attribute: %s'%item[0])
+            safe += '%s="%s" '%item
+        return '<img %s/>'%safe
+
+    def urlopen(self):
+        """
+        Grabs readable PNG file pointer
+        """
+        req = Request(str(self))
+        try:
+            return urlopen(req)
+        except HTTPError:
+            _print('The server couldn\'t fulfill the request.')
+        except URLError:
+            _print('We failed to reach a server.')
+
+    def image(self):
+        """
+        Returns a PngImageFile instance of the chart
+
+        You must have PIL installed for this to work
+        """
+        try:
+            try:
+                import Image
+            except ImportError:
+                from PIL import Image
+        except ImportError:
+            raise ImportError('You must install PIL to fetch image objects')
+        try:
+            from cStringIO import StringIO
+        except ImportError:
+            from StringIO import StringIO
+        return Image.open(StringIO(self.urlopen().read()))
+
+    def write(self, fp):
+        """
+        Writes out PNG image data in chunks to file pointer fp
+
+        fp must support w or wb
+        """
+        urlfp = self.urlopen().fp
+        while 1:
+            try:
+                fp.write(urlfp.next())
+            except StopIteration:
+                return
+
+    # pgbovine - unnecessary
+    '''
+    def checksum(self):
+        """
+        Returns the unique SHA1 hexdigest of the chart URL param parts
+
+        good for unittesting...
+        """
+        self.render()
+        return new_sha(''.join(sorted(self._parts()))).hexdigest()
+    '''
+
+# Now a whole mess of convenience classes
+# *for those of us who dont speak API*
+class QRCode(GChart):
+    def __init__(self, content='', **kwargs):
+        kwargs['choe'] = 'UTF-8'
+        if isinstance(content, str):
+            kwargs['chl'] = quote(content).replace('%0A','\n')
+        else:
+            kwargs['chl'] = quote(content[0]).replace('%0A','\n')
+        GChart.__init__(self, 'qr', None, **kwargs)
+        
+class _AbstractGChart(GChart):
+    o,t = {},None
+    def __init__(self, dataset, **kwargs):
+        kwargs.update(self.o)
+        GChart.__init__(self, self.t, dataset, **kwargs)
+
+
+class Meter(_AbstractGChart):   o,t = {'encoding':'text'},'gom'
+class Line(_AbstractGChart):     t = 'lc' 
+class LineXY(_AbstractGChart):     t = 'lxy' 
+class HorizontalBarStack(_AbstractGChart):     t = 'bhs' 
+class VerticalBarStack(_AbstractGChart):     t = 'bvs' 
+class HorizontalBarGroup(_AbstractGChart):     t = 'bhg' 
+class VerticalBarGroup(_AbstractGChart):     t = 'bvg' 
+class Pie(_AbstractGChart):     t = 'p' 
+class Pie3D(_AbstractGChart):     t = 'p3' 
+class Venn(_AbstractGChart):     t = 'v' 
+class Scatter(_AbstractGChart):     t = 's' 
+class Sparkline(_AbstractGChart):     t = 'ls' 
+class Radar(_AbstractGChart):     t = 'r' 
+class RadarSpline(_AbstractGChart):     t = 'rs' 
+class Map(_AbstractGChart):     t = 't' 
+class PieC(_AbstractGChart):     t = 'pc' 
+
+########################################
+# Now for something completely different
+########################################
+class Text(GChart):
+    def render(self): pass
+    def __init__(self, *args):
+        GChart.__init__(self)
+        self['chst'] = 'd_text_outline'
+        args = list(map(str, color_args(args, 0, 3)))
+        assert args[2] in 'lrh', 'Invalid text alignment'
+        assert args[4] in '_b', 'Invalid font style'
+        self['chld'] = '|'.join(args).replace('\r\n','|')\
+            .replace('\r','|').replace('\n','|').replace(' ','+')
+
+class Pin(GChart):
+    def render(self): pass
+    def __init__(self, ptype, *args):
+        GChart.__init__(self)
+        assert ptype in PIN_TYPES, 'Invalid type'
+        if ptype == "pin_letter":
+            args = color_args(args, 1,2)
+        elif ptype == 'pin_icon':
+            args = list(color_args(args, 1))
+            assert args[0] in PIN_ICONS, 'Invalid icon name'
+        elif ptype == 'xpin_letter':
+            args = list(color_args(args, 2,3,4))
+            assert args[0] in PIN_SHAPES, 'Invalid pin shape'
+            if not args[0].startswith('pin_'):
+                args[0] = 'pin_%s'%args[0] 
+        elif ptype == 'xpin_icon':
+            args = list(color_args(args, 2,3))
+            assert args[0] in PIN_SHAPES, 'Invalid pin shape'
+            if not args[0].startswith('pin_'):
+                args[0] = 'pin_%s'%args[0] 
+            assert args[1] in PIN_ICONS, 'Invalid icon name'
+        elif ptype == 'spin':
+            args = color_args(args, 2)
+        self['chst'] = 'd_map_%s'%ptype
+        self['chld'] = '|'.join(map(str, args)).replace('\r\n','|')\
+            .replace('\r','|').replace('\n','|').replace(' ','+')
+    def shadow(self):
+        image = copy(self)
+        chsts = self['chst'].split('_')
+        chsts[-1] = 'shadow'
+        image.data['chst'] = '_'.join(chsts)
+        return image
+
+class Note(GChart):
+    def render(self): pass
+    def __init__(self, *args):
+        GChart.__init__(self)
+        assert args[0] in NOTE_TYPES,'Invalid note type'
+        assert args[1] in NOTE_IMAGES,'Invalid note image'
+        if args[0].find('note')>-1:
+            self['chst'] =  'd_f%s'%args[0]
+            args = list(color_args(args, 3))
+        else:
+            self['chst'] = 'd_%s'%args[0]
+            assert args[2] in NOTE_WEATHERS,'Invalid weather'
+        args = args[1:]
+        self['chld'] = '|'.join(map(str, args)).replace('\r\n','|')\
+            .replace('\r','|').replace('\n','|').replace(' ','+')
+
+class Bubble(GChart):
+    def render(self): pass
+    def __init__(self, btype, *args):
+        GChart.__init__(self)
+        assert btype in BUBBLE_TYPES, 'Invalid type'
+        if btype in ('icon_text_small','icon_text_big'):
+            args = list(color_args(args, 3,4))
+            assert args[0] in BUBBLE_SICONS,'Invalid icon type'
+        elif btype == 'icon_texts_big':
+            args = list(color_args(args, 2,3))
+            assert args[0] in BUBBLE_LICONS,'Invalid icon type'
+        elif btype == 'texts_big':
+            args = color_args(args, 1,2)
+        self['chst'] = 'd_bubble_%s'%btype
+        self['chld'] = '|'.join(map(str, args)).replace('\r\n','|')\
+            .replace('\r','|').replace('\n','|').replace(' ','+')
+    def shadow(self):
+        image = copy(self)
+        image.data['chst'] = '%s_shadow'%self['chst']
+        return image
+
+
+# added by pgbovine
+class GraphViz(GChart):
+    def render(self): pass
+    def __init__(self, dot_string):
+        GChart.__init__(self)
+        self['chl'] = dot_string
+        self['cht'] = 'gv'
diff --git a/v3/GChartWrapper/README b/v3/GChartWrapper/README
new file mode 100644
index 000000000..44607fdd3
--- /dev/null
+++ b/v3/GChartWrapper/README
@@ -0,0 +1,24 @@
+Downloaded from https://code.google.com/p/google-chartwrapper/
+
+TODO: add support for GraphViz charts:
+  https://developers.google.com/chart/image/docs/gallery/graphviz
+  GraphViz hack to render balanced binary trees:
+    http://www.graphviz.org/content/FaqBalanceTree
+
+  JSON-based callback support for image maps so that you can click on
+  the generated graphs:
+    https://developers.google.com/chart/image/docs/gallery/graphviz
+
+e.g.,:
+  http://chart.apis.google.com/chart?cht=gv&chl=digraph{C[penwidth=2,color=red],A-%3EB-%3EC-%3EA,C-%3ED,D-%3EE,D-%3EF}
+
+and tweaked to remove dependency on utf-8 encoding, which seems to trip
+up parts of OPT, and to remove unnecessary imports (for security and
+efficiency reasons)
+
+See here for demos:
+  http://justquick.github.io/google-chartwrapper-demos/
+
+See here for the official API, which is now deprecated:
+  https://developers.google.com/chart/image/
+
diff --git a/v3/GChartWrapper/__init__.py b/v3/GChartWrapper/__init__.py
new file mode 100644
index 000000000..13a80339c
--- /dev/null
+++ b/v3/GChartWrapper/__init__.py
@@ -0,0 +1,14 @@
+from GChartWrapper.GChart import *
+
+__all__ = ['Sparkline', 'Map', 'HorizontalBarStack', 'VerticalBarStack', 'QRCode',
+'Line', 'GChart', 'HorizontalBarGroup', 'Scatter', 'Pie3D', 'Pie', 'Meter',
+'Radar', 'RadarSpline', 'VerticalBarGroup', 'LineXY', 'Venn', 'PieC','Pin',
+'Text','Note','Bubble', 'GraphViz']
+__version__ = '0.9'
+__author__ = 'Justin Quick <justquick@gmail.com>'
+
+def chart(context, chart=None, *args, **kwargs):
+    import GChartWrapper
+    if chart and chart in dir(GChartWrapper):
+        return getattr(GChartWrapper, chart)(*args, **kwargs)
+    return GChartWrapper.GChart(*args, **kwargs)
diff --git a/v3/GChartWrapper/charts/__init__.py b/v3/GChartWrapper/charts/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/v3/GChartWrapper/charts/templatetags/__init__.py b/v3/GChartWrapper/charts/templatetags/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/v3/GChartWrapper/charts/templatetags/charts.py b/v3/GChartWrapper/charts/templatetags/charts.py
new file mode 100644
index 000000000..0d769a98e
--- /dev/null
+++ b/v3/GChartWrapper/charts/templatetags/charts.py
@@ -0,0 +1,172 @@
+"""
+Django templatetags for chart and note types
+Now takes an as argument
+If the as argument is 'img', it will return a XHTML <img/>
+If the as argument is 'url', it will simply return the url of the chart
+If the as argument is anything else, the chart will be loaded into the context
+and named what the as argument is
+
+{% chart ... [as url|img|varname] %}
+...
+{% endchart %}
+
+Example:
+
+    {% chart Pie3D 1 2 3 4 5 as pie %}
+        {% label A B C D %}
+        {% color green %}
+    {% endchart %}
+
+    {% pie %} # The chart obj itself
+    {% pie.image %} # The PIL instance
+    {% pie.checksum %} # An SHA1 checksum
+
+The FancyNode powers the tag for Note,Pin,Text and Bubble charts
+The <type> argument is one of the chart types in lower case
+
+    {% <type> ... [as url|img|varname]%}
+    
+    Example:
+        {% bubble icon_text_big snack bb $2.99 ffbb00 black as img %}
+    """
+
+from django.template import Library,Node
+from django.template import resolve_variable
+import GChartWrapper
+
+register = Library()
+
+class GenericNode(Node):
+    def __init__(self, args):
+        self.args = map(unicode,args)
+    def render(self,context):
+        for n,arg in enumerate(self.args):
+            if arg in context:
+                self.args[n] = resolve_variable(arg, context)
+            elif arg[0] == '"' and arg[-1] == '"':
+                self.args[n] = arg[1:-1]
+            elif arg[0] == "'" and arg[-1] == "'":
+                self.args[n] = arg[1:-1]
+        return self.post_render(context)
+    def post_render(self, context): return self.args
+    
+def attribute(parser, token):
+    return GenericNode(token.split_contents())
+
+for tag in GChartWrapper.constants.TTAGSATTRS:
+    register.tag(tag, attribute)
+
+class ChartNode(Node):
+    def __init__(self, tokens, nodelist):
+        self.type = None
+        self.tokens = []
+        self.mode = None
+        if tokens and len(tokens)>1:
+            self.type = tokens[1]   
+            if tokens[-2] == 'as':
+                self.mode = tokens[-1]
+                self.tokens = tokens[2:-2]
+            else:
+                self.tokens = tokens[2:]
+        self.nodelist = nodelist
+    def render(self, context): 
+        args = []
+        kwargs = {}
+        for t in self.tokens:
+            try:
+                args.append(resolve_variable(t,context))
+            except:        
+                try:
+                    args.append(float(t))
+                except:
+                    arg = str(t)
+                    if arg.find('=')>-1:
+                        k,v = arg.split('=')[:2]
+                        kwargs[k] = v
+                    else:
+                        args.append(arg)   
+        if len(args) == 1 and type(args[0]) in map(type,[[],()]):
+            args = args[0]   
+        if self.type in dir(GChartWrapper):
+            chart = getattr(GChartWrapper,self.type)(args,**kwargs)
+        elif self.type in GChartWrapper.constants.TYPES:
+            chart = GChartWrapper.GChart(self.type,args,**kwargs)
+        else:
+            raise TypeError('Chart type %s not recognized'%self.type)
+        imgkwargs = {}
+        for n in self.nodelist:
+            rend = n.render(context)           
+            if type(rend) == type([]):
+                if rend[0] == 'img':
+                    for k,v in map(lambda x: x.split('='), rend[1:]):
+                        imgkwargs[k] = v
+                    continue
+                if rend[0] == 'axes':
+                    getattr(getattr(chart, rend[0]), rend[1])(*rend[2:])
+                else:
+                    if isinstance(rend[1], list) or isinstance(rend[1], tuple):
+                        getattr(chart, rend[0])(*rend[1])
+                    else:
+                        getattr(chart, rend[0])(*rend[1:])
+        if self.mode:
+            if self.mode == 'img':  
+                return chart.img(**imgkwargs)
+            elif self.mode == 'url':  
+                return str(chart)
+            else:  
+                context[self.mode] = chart
+        else:
+            return chart.img(**imgkwargs)
+
+def make_chart(parser, token):
+    nodelist = parser.parse(('endchart',))
+    parser.delete_first_token()
+    tokens = token.contents.split()
+    return ChartNode(tokens,nodelist)
+    
+register.tag('chart', make_chart)
+
+class FancyNode(GenericNode):
+    cls = None
+    def post_render(self,context):
+        mode = None
+        self.args = self.args[1:]
+        if self.args[-2] == 'as':
+            mode = self.args[-1]
+            self.args = self.args[:-2]
+        for n,arg in enumerate(self.args):
+            self.args[n] = arg.replace('\\n','\n').replace('\\r','\r')
+        G = self.cls(*self.args)
+        if mode:
+            if mode == 'img':  
+                return G.img()
+            if mode == 'url':  
+                return str(G)
+            else:  
+                context[mode] = G
+        else:
+            return G.img()
+        
+class NoteNode(FancyNode):
+    cls = GChartWrapper.Note
+def note(parser, token):
+    return NoteNode(token.split_contents())
+register.tag(note)
+
+class PinNode(FancyNode):
+    cls = GChartWrapper.Pin
+def pin(parser, token):
+    return PinNode(token.split_contents())
+register.tag(pin)
+
+class TextNode(FancyNode):
+    cls = GChartWrapper.Text
+def text(parser, token):
+    return TextNode(token.split_contents())
+register.tag(text)
+
+class BubbleNode(FancyNode):
+    cls = GChartWrapper.Bubble
+def bubble(parser, token):
+    return BubbleNode(token.split_contents())
+register.tag(bubble)
\ No newline at end of file
diff --git a/v3/GChartWrapper/constants.py b/v3/GChartWrapper/constants.py
new file mode 100644
index 000000000..9d78d4313
--- /dev/null
+++ b/v3/GChartWrapper/constants.py
@@ -0,0 +1,229 @@
+# (modified by Philip Guo to remove utf-8 dependencies and unnecessary imports)
+import sys
+
+def _print(*args):
+    for arg in args:
+        sys.stdout.write('%s '%arg)
+    sys.stdout.write('\n')
+
+if sys.version.startswith('3'):
+    PY_VER = '3.x'
+    from urllib.parse import quote_plus,parse_qsl
+    from urllib.request import Request, urlopen, urlretrieve
+    #from hashlib import sha1
+    #new_sha = lambda s: sha1(bytes(s,'utf-8'))
+else:
+    PY_VER = '2.x'
+    from urllib import quote_plus,urlretrieve
+    from urllib2 import urlopen, Request, URLError, HTTPError
+    from cgi import parse_qsl
+    #try: # >= 2.5
+    #    from hashlib import sha1 as new_sha
+    #except ImportError: # < 2.5
+    #    from sha import new as new_sha
+
+def quote(s):
+    try:
+        return  quote_plus(s.encode('utf-8'),'+.,:|/?&$=')
+    except:
+        return  quote_plus(s,'+.,:|/?&$=')
+
+def smart_str(s):
+    try:
+        s = quote(s)
+    except:
+        pass
+    # pgbovine - never use utf-8
+    #if PY_VER == '2.x':
+    #    return unicode(s).encode('utf-8') # Py2K
+    return str(s)#.encode('utf-8') # Py3K
+
+APIPARAMS = ('chxtc', 'chxt', 'chxp', 'chxs', 'chxr', 'chco', 'chtm', 'chld',
+    'chts', 'chtt', 'chxl', 'chd', 'chf', 'chg', 'chl', 'chm', 'chp', 'chs',
+    'cht', 'chls', 'chdlp', 'chds', 'chbh', 'chdl', 'choe', 'chst', 'chma')
+
+MARKERS = 'acdostvVhxrRbBDF'
+
+TYPES = ('bvs', 'p3', 'qr', 'lc', 'p', 'bhg', 'pc', 's', 'r', 'rs', 'bvg', 't',
+    'v', 'lxy', 'bhs', 'gom', 'ls')
+
+IMGATTRS = ('title','alt','align','border','height','width','ismap','longdesc',
+'usemap','id','class','style','lang','xml:lang','onclick','ondblclick','onmousedown',
+'onmouseup','onmouseover','onmousemove','onmouseout','onkeypress','onkeydown','onkeyup')
+
+GEO = ('africa','asia','europe','middle_east','south_america','usa','world')
+
+TTAGSATTRS = ('label','title','color','line','grid','bar','marker','fill','legend','axes',
+'encoding','scale','size','type','dataset','img','map','bar_width_spacing',
+'legend_pos','output_encoding','level_data')
+
+APIURL = 'http://chart.apis.google.com/chart?' 
+
+COLOR_MAP = {
+    'aliceblue': 'F0F8FF',
+    'antiquewhite': 'FAEBD7',
+    'aqua': '00FFFF',
+    'aquamarine': '7FFFD4',
+    'azure': 'F0FFFF',
+    'beige': 'F5F5DC',
+    'bisque': 'FFE4C4',
+    'black': '000000',
+    'blanchedalmond': 'FFEBCD',
+    'blue': '0000FF',
+    'blueviolet': '8A2BE2',
+    'brown': 'A52A2A',
+    'burlywood': 'DEB887',
+    'cadetblue': '5F9EA0',
+    'chartreuse': '7FFF00',
+    'chocolate': 'D2691E',
+    'coral': 'FF7F50',
+    'cornflowerblue': '6495ED',
+    'cornsilk': 'FFF8DC',
+    'crimson': 'DC143C',
+    'cyan': '00FFFF',
+    'darkblue': '00008B',
+    'darkcyan': '008B8B',
+    'darkgoldenrod': 'B8860B',
+    'darkgray': 'A9A9A9',
+    'darkgreen': '006400',
+    'darkkhaki': 'BDB76B',
+    'darkmagenta': '8B008B',
+    'darkolivegreen': '556B2F',
+    'darkorange': 'FF8C00',
+    'darkorchid': '9932CC',
+    'darkred': '8B0000',
+    'darksalmon': 'E9967A',
+    'darkseagreen': '8FBC8F',
+    'darkslateblue': '483D8B',
+    'darkslategray': '2F4F4F',
+    'darkturquoise': '00CED1',
+    'darkviolet': '9400D3',
+    'deeppink': 'FF1493',
+    'deepskyblue': '00BFFF',
+    'dimgray': '696969',
+    'dodgerblue': '1E90FF',
+    'firebrick': 'B22222',
+    'floralwhite': 'FFFAF0',
+    'forestgreen': '228B22',
+    'fuchsia': 'FF00FF',
+    'gainsboro': 'DCDCDC',
+    'ghostwhite': 'F8F8FF',
+    'gold': 'FFD700',
+    'goldenrod': 'DAA520',
+    'gray': '808080',
+    'green': '008000',
+    'greenyellow': 'ADFF2F',
+    'honeydew': 'F0FFF0',
+    'hotpink': 'FF69B4',
+    'indianred ': 'CD5C5C',
+    'indigo  ': '4B0082',
+    'ivory': 'FFFFF0',
+    'khaki': 'F0E68C',
+    'lavender': 'E6E6FA',
+    'lavenderblush': 'FFF0F5',
+    'lawngreen': '7CFC00',
+    'lemonchiffon': 'FFFACD',
+    'lightblue': 'ADD8E6',
+    'lightcoral': 'F08080',
+    'lightcyan': 'E0FFFF',
+    'lightgoldenrodyellow': 'FAFAD2',
+    'lightgrey': 'D3D3D3',
+    'lightgreen': '90EE90',
+    'lightpink': 'FFB6C1',
+    'lightsalmon': 'FFA07A',
+    'lightseagreen': '20B2AA',
+    'lightskyblue': '87CEFA',
+    'lightslategray': '778899',
+    'lightsteelblue': 'B0C4DE',
+    'lightyellow': 'FFFFE0',
+    'lime': '00FF00',
+    'limegreen': '32CD32',
+    'linen': 'FAF0E6',
+    'magenta': 'FF00FF',
+    'maroon': '800000',
+    'mediumaquamarine': '66CDAA',
+    'mediumblue': '0000CD',
+    'mediumorchid': 'BA55D3',
+    'mediumpurple': '9370D8',
+    'mediumseagreen': '3CB371',
+    'mediumslateblue': '7B68EE',
+    'mediumspringgreen': '00FA9A',
+    'mediumturquoise': '48D1CC',
+    'mediumvioletred': 'C71585',
+    'midnightblue': '191970',
+    'mintcream': 'F5FFFA',
+    'mistyrose': 'FFE4E1',
+    'moccasin': 'FFE4B5',
+    'navajowhite': 'FFDEAD',
+    'navy': '000080',
+    'oldlace': 'FDF5E6',
+    'olive': '808000',
+    'olivedrab': '6B8E23',
+    'orange': 'FFA500',
+    'orangered': 'FF4500',
+    'orchid': 'DA70D6',
+    'palegoldenrod': 'EEE8AA',
+    'palegreen': '98FB98',
+    'paleturquoise': 'AFEEEE',
+    'palevioletred': 'D87093',
+    'papayawhip': 'FFEFD5',
+    'peachpuff': 'FFDAB9',
+    'peru': 'CD853F',
+    'pink': 'FFC0CB',
+    'plum': 'DDA0DD',
+    'powderblue': 'B0E0E6',
+    'purple': '800080',
+    'red': 'FF0000',
+    'rosybrown': 'BC8F8F',
+    'royalblue': '4169E1',
+    'saddlebrown': '8B4513',
+    'salmon': 'FA8072',
+    'sandybrown': 'F4A460',
+    'seagreen': '2E8B57',
+    'seashell': 'FFF5EE',
+    'sienna': 'A0522D',
+    'silver': 'C0C0C0',
+    'skyblue': '87CEEB',
+    'slateblue': '6A5ACD',
+    'slategray': '708090',
+    'snow': 'FFFAFA',
+    'springgreen': '00FF7F',
+    'steelblue': '4682B4',
+    'tan': 'D2B48C',
+    'teal': '008080',
+    'thistle': 'D8BFD8',
+    'tomato': 'FF6347',
+    'turquoise': '40E0D0',
+    'violet': 'EE82EE',
+    'wheat': 'F5DEB3',
+    'white': 'FFFFFF',
+    'whitesmoke': 'F5F5F5',
+    'yellow': 'FFFF00',
+    'yellowgreen': '9ACD32'
+}
+PIN_TYPES = ('pin_letter','pin_icon','xpin_letter','xpin_icon','spin')
+PIN_ICONS = ('home', 'home', 'WC', 'WCfemale', 'WCmale', 'accomm', 'airport',
+    'baby', 'bar', 'bicycle', 'bus', 'cafe', 'camping', 'car', 'caution', 'cinema',
+    'computer', 'corporate', 'dollar', 'euro', 'fire', 'flag', 'floral', 'helicopter',
+    'home', 'info', 'landslide', 'legal', 'location', 'locomotive', 'medical',
+    'mobile', 'motorcycle', 'music', 'parking', 'pet', 'petrol', 'phone', 'picnic',
+    'postal', 'pound', 'repair', 'restaurant', 'sail', 'school', 'scissors', 'ship',
+    'shoppingbag', 'shoppingcart', 'ski', 'snack', 'snow', 'sport', 'swim', 'taxi',
+    'train', 'truck', 'wheelchair', 'yen')
+PIN_SHAPES = ('pin','star','sleft','sright')
+NOTE_TYPES = ('note_title','note','weather')
+NOTE_IMAGES = ('arrow_d', 'balloon', 'pinned_c', 'sticky_y', 'taped_y', 'thought')
+NOTE_WEATHERS = ('clear-night-moon', 'cloudy-heavy', 'cloudy-sunny', 'cloudy',
+    'rain', 'rainy-sunny', 'snow', 'snowflake', 'snowy-sunny', 'sunny-cloudy',
+    'sunny', 'thermometer-cold', 'thermometer-hot', 'thunder', 'windy')
+BUBBLE_TYPES = ('icon_text_small','icon_text_big','icon_texts_big','texts_big')
+BUBBLE_SICONS = ('WC', 'WCfemale', 'WCmale', 'accomm', 'airport', 'baby', 'bar',
+    'bicycle', 'bus', 'cafe', 'camping', 'car', 'caution', 'cinema', 'computer',
+    'corporate', 'dollar', 'euro', 'fire', 'flag', 'floral', 'helicopter', 'home',
+    'info', 'landslide', 'legal', 'location', 'locomotive', 'medical', 'mobile',
+    'motorcycle', 'music', 'parking', 'pet', 'petrol', 'phone', 'picnic', 'postal',
+    'pound', 'repair', 'restaurant', 'sail', 'school', 'scissors', 'ship', 'shoppingbag',
+    'shoppingcart', 'ski', 'snack', 'snow', 'sport', 'swim', 'taxi', 'train',
+    'truck', 'wheelchair', 'yen')
+BUBBLE_LICONS = ('beer', 'bike', 'car', 'house', 'petrol', 'ski', 'snack')
+LEGEND_POSITIONS = ('b','t','r','l','bv','tv')
diff --git a/v3/GChartWrapper/encoding.py b/v3/GChartWrapper/encoding.py
new file mode 100644
index 000000000..749d8348f
--- /dev/null
+++ b/v3/GChartWrapper/encoding.py
@@ -0,0 +1,122 @@
+coding = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
+ecoding = coding + '-.'
+codeset =  {
+    'simple': {
+        'coding': coding,
+        'max_value':  61,
+        'char': ',',
+        'dchar': '',
+        'none': '_',
+        'value': lambda x: coding[x]
+    },
+    'text': {
+        'coding': '',
+        'max_value':  100,
+        'none': '-1',
+        'char': '|',
+        'dchar': ',',
+        'value': lambda x: '%.1f' % float(x)
+    },
+    'extended': {
+        'coding':  ecoding,
+        'max_value':  4095,
+        'none':  '__',
+        'dchar': '',
+        'char': ',',
+        'value': lambda x: '%s%s' % \
+             (ecoding[int(float(x) / 64)], ecoding[int(x % 64)])
+    }
+}
+
+class Encoder:
+    """Data encoder that handles simple,text, and extended encodings
+
+    Based on javascript encoding algorithm and pygooglecharts"""
+    def __init__(self, encoding=None, scale=None, series=''):
+        self.series = series or ''
+        if encoding is None:
+            encoding = 'text'
+        assert(encoding in ('simple','text','extended')),\
+            'Unknown encoding: %s'%encoding
+        self.encoding = encoding
+        self.scale = scale
+        self.codeset = codeset[encoding]
+
+    def scalevalue(self, value):
+        return value # one day...
+        if self.encoding != 'text' and self.scale and \
+                isinstance(value, int) or isinstance(value, float):
+            if type(self.scale) == type(()):
+                lower,upper = self.scale
+            else:
+                lower,upper = 0,float(self.scale)
+            value = int(round(float(value - lower) * \
+                            self.codeset['max_value'] / upper))
+        return min(value, self.codeset['max_value'])
+
+    def encode(self,  *args, **kwargs):
+        """Encode wrapper for a dataset with maximum value
+
+        Datasets can be one or two dimensional
+        Strings are ignored as ordinal encoding"""
+        if isinstance(args[0], str):
+            return self.encode([args[0]],**kwargs)
+        elif isinstance(args[0], int) or isinstance(args[0], float):
+            return self.encode([[args[0]]],**kwargs)
+        if len(args)>1:
+            dataset = args
+        else:
+            dataset = args[0]
+        typemap = list(map(type,dataset))
+        code = self.encoding[0]
+        if type('') in typemap:
+            data = ','.join(map(str,dataset))
+        elif type([]) in typemap or type(()) in typemap:
+            data = self.codeset['char'].join(map(self.encodedata, dataset))
+        elif len(dataset) == 1 and hasattr(dataset[0], '__iter__'):
+            data = self.encodedata(dataset[0])
+        else:
+            try:
+                data = self.encodedata(dataset)
+            except ValueError:
+                data = self.encodedata(','.join(map(unicode,dataset)))
+        if not '.' in data and code == 't':
+            code = 'e'
+        return '%s%s:%s'%(code,self.series,data)
+
+    def encodedata(self, data):
+        sub_data = []
+        enc_size = len(self.codeset['coding'])
+        for value in data:
+            if value in (None,'None'):
+                sub_data.append(self.codeset['none'])
+            elif isinstance(value, str):
+                sub_data.append(value)
+            elif value >= -1:
+                try:
+                    sub_data.append(self.codeset['value'](self.scalevalue(value)))
+                except:
+                    raise ValueError('cannot encode value: %s'%value)
+        return self.codeset['dchar'].join(sub_data)
+
+    def decode(self, astr):
+        e = astr[0]
+        dec_data = []
+        for data in astr[2:].split(self.codeset['char']):
+            sub_data = []
+            if e == 't':
+                sub_data.extend(map(float, data.split(',')))
+            elif e == 'e':
+                flag = 0
+                index = self.codeset['coding'].index
+                for i in range(len(data)):
+                    if not flag:
+                        this,next = index(data[i]),index(data[i+1])
+                        flag = 1
+                        sub_data.append((64 * this) + next)
+                    else: flag = 0
+            elif e == 's':
+                sub_data.extend(map(self.codeset['coding'].index, data))
+            dec_data.append(sub_data)
+        return dec_data
+
diff --git a/v3/README b/v3/README
new file mode 100644
index 000000000..1fd36b8f4
--- /dev/null
+++ b/v3/README
@@ -0,0 +1,7 @@
+This is the latest version of Online Python Tutor
+
+Thanks to John DeNero, this version works on both Python 2 and 3.
+
+All documentation is viewable online at:
+  https://github.com/pgbovine/OnlinePythonTutor/tree/master/v3/docs
+
diff --git a/v3/app.yaml b/v3/app.yaml
new file mode 100644
index 000000000..715e87541
--- /dev/null
+++ b/v3/app.yaml
@@ -0,0 +1,26 @@
+application: google.com:pythontutor
+version: 1
+runtime: python27
+api_version: 1
+threadsafe: false
+
+libraries:
+- name: jinja2
+  version: latest
+
+handlers:
+- url: /js
+  static_dir: js
+
+- url: /css
+  static_dir: css
+
+- url: /example-code
+  static_dir: example-code
+
+- url: /lessons
+  static_dir: lessons
+
+- url: /.*
+  script: pythontutor.app
+
diff --git a/v3/basic.html b/v3/basic.html
new file mode 100644
index 000000000..b98aa7cef
--- /dev/null
+++ b/v3/basic.html
@@ -0,0 +1,187 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Visualize Python, Java, JavaScript, TypeScript, and Ruby code execution</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<link type="text/css" href="css/jquery.ui.chatbox.css" rel="stylesheet" />
+<script type="text/javascript" src="js/jquery.ui.chatbox.js"></script>
+
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/holistic.js"></script>
+<link rel="stylesheet" href="css/holistic.css"/>
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-frontend.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+<script type="text/javascript" src="js/socket.io-client/socket.io.js"></script>
+
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<script type="text/javascript">
+
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-34795707-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
+
+</head>
+
+<body>
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write code in
+
+  <select id="pythonVersionSelector">
+    <option value="2">Python 2.7</option>
+    <option value="3">Python 3.3</option>
+    <!--<option value="2crazy">Py 2.crazy</option>-->
+    <option value="java">Java</option>
+    <option value="js">JavaScript</option>
+    <option value="ts">TypeScript</option>
+    <option value="ruby">Ruby</option>
+  </select>
+
+</div>
+
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+
+<div id="javaOptionsPane" style="margin-top: 20px;">
+[<i>coming soon!</i>] Java options: pass in command-line arguments and feed user input to stdin
+</div>
+
+
+<div id="optionsPane" style="margin-top: 18px; line-height: 150%;">
+  <select id="cumulativeModeSelector">
+    <option value="false">hide exited frames [default]</option>
+    <option value="true">show exited frames (Python)</option>
+    <option value="holistic">holistic mode (experimental)</option>
+  </select>
+  <select id="heapPrimitivesSelector">
+    <option value="false">inline primitives &amp; nested objects [default]</option>
+    <option value="true">render all objects on the heap</option>
+  </select>
+  <select id="textualMemoryLabelsSelector">
+    <option value="false">draw pointers as arrows [default]</option>
+    <option value="true">use text labels for pointers</option>
+  </select>
+
+  <!-- hide these for now -->
+  <select id="drawParentPointerSelector" style="display: none;">
+    <option value="false">hide environment parent pointers (default)</option>
+    <!--<option value="true">show environment parent pointers</option>-->
+  </select>
+  <select id="showOnlyOutputsSelector" style="display: none;">
+    <option value="false">show everything (default)</option>
+    <!--<option value="true">show only outputs</option>-->
+  </select>
+</div>
+
+
+<p style="margin-top: 25px;"><a href="#" id="createTestsLink">Create test cases</a></p>
+
+<div id="testCasesPane"></div>
+
+</div>
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p style="margin-top: 30px;">Privacy Policy: By using PLTutor, your
+visualized code, options, user interactions, text chats, and IP address
+are logged on our server and may be analyzed for research purposes.
+Nearly all Web services collect this basic information from users.
+However, this website does not collect any personal information or
+session state from users, nor does it issue any cookies.</p>
+
+</div>
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<div id="chat_div"></div>
+
+</body>
+</html>
diff --git a/v3/bintree_module.py b/v3/bintree_module.py
new file mode 100644
index 000000000..b72d3422c
--- /dev/null
+++ b/v3/bintree_module.py
@@ -0,0 +1,442 @@
+# TODO: how do you set the BACKGROUND COLOR of a GraphViz node ... fill=?
+
+
+# example code snippet to visualize, which uses '#break' as a breakpoint
+# feel free to clean up however you like
+'''
+from bintree_module import TNode
+import html_module
+
+r = TNode('a',
+          left=TNode('b0',
+                     left=TNode('c0',
+                                right=TNode('d1')),
+                     right=TNode('c1',
+                                 left=TNode('d3'),
+                                 right=TNode('d4'))),
+          right=TNode('b1',
+                      left=TNode('c2')))
+
+def highlight_and_display(root):
+    def f(node):
+        node.highlight()
+        html_module.display_img(root.to_graphviz_img()) #break
+        node.reset_style()
+    return f
+
+def preorder(t, visitfn):
+    if not t:
+        return
+    visitfn(t)
+    preorder(t.left, visitfn)
+    preorder(t.right, visitfn)
+
+preorder(r, highlight_and_display(r))
+'''
+
+
+from collections import defaultdict
+
+import GChartWrapper
+import html_module
+
+import sys
+is_python3 = (sys.version_info[0] == 3)
+
+if is_python3:
+  import io as cStringIO
+else:
+  import cStringIO
+
+ID = 0
+
+# somewhat inspired by bst.py from MIT 6.006 OCW
+# http://ocw.mit.edu/ans7870/6/6.006/s08/lecturenotes/search.htm
+class TNode:
+  def __init__(self, dat, left=None, right=None):
+    self.data = dat
+    self.parent = None
+    self.left = left
+    self.right = right
+
+    if self.left:
+      self.left.parent = self
+    if self.right:
+      self.right.parent = self
+
+    self.__penwidth = 1 # thickness of node border
+
+    # HTML-like RGB hex values - e.g., "#bb0000"
+    self.__color = None # border color
+    self.__fill = None  # internal node color
+
+    # assign unique IDs in node creation order
+    global ID
+    self.id = 'n' + str(ID)
+    ID += 1
+
+  def disconnect(self):
+    self.left = None
+    self.right = None
+    self.parent = None
+
+  def set_border_color(self, col):
+    self.__color = col
+
+  def set_fill(self, col):
+    self.__fill = col
+
+  def set_width(self, w):
+    assert w > 0
+    self.__penwidth = w
+
+  def highlight(self):
+    self.__color = 'red'
+    self.__penwidth = 2
+
+  def reset_style(self):
+    self.__color = None
+    self.__fill = None
+    self.__penwidth = 1
+
+  def is_leaf(self):
+    return not (self.left or self.right)
+
+  def graphviz_str(self):
+    ret = '%s[label="%s"' % (self.id, str(self.data)) # convert to str() for display
+    if self.__penwidth > 1:
+      ret += ',penwidth=%d' % self.__penwidth
+    if self.__color:
+      ret += ',color="%s"' % self.__color
+    if self.__fill:
+      ret += ',fill="%s"' % self.__fill
+    ret += ']'
+    return ret
+
+  def __str__(self):
+    return 'TNode(%s)' % repr(self.data)
+
+
+  # render a binary tree of TNode objects starting at self in a pretty
+  # GraphViz format using the balanced tree hack from
+  # http://www.graphviz.org/content/FaqBalanceTree
+  def graphviz_render(self, ios, compress=False):
+    separator = '\n'
+    if compress:
+      separator=','
+    ios.write('digraph G{')
+
+    if not compress:
+      ios.write('\n')
+    
+    queue = [] # each element is (node, level #)
+
+    # Key: level number
+    # Value: sorted list of node IDs at that level (including phantom nodes)
+    nodes_by_level = defaultdict(list)
+
+
+    def render_phantom(parent_id, suffix):
+      phantom_id = parent_id + '_phantom_' + suffix
+      ios.write('%s [label="",width=.1,style=invis]%s' % (phantom_id, separator))
+      ios.write('%s->%s [style=invis]%s' % (parent_id, phantom_id, separator))
+      return phantom_id
+
+    def bfs_visit():
+      # base case
+      if not queue:
+        return
+
+      n, level = queue.pop(0)
+
+      ios.write(n.graphviz_str() + separator) # current node
+      if n.left or n.right:
+        if n.left:
+          ios.write('%s->%s%s' % (n.id, n.left.id, separator))
+          queue.append((n.left, level+1))
+          nodes_by_level[level+1].append(n.left.id)
+        else:
+          # insert phantom to make tree look good
+          ph_id = render_phantom(n.id, 'L')
+          nodes_by_level[level+1].append(ph_id)
+
+        # always insert invisible middle phantom
+        ph_id = render_phantom(n.id, 'M')
+        nodes_by_level[level+1].append(ph_id)
+
+        if n.right:
+          ios.write('%s->%s%s' % (n.id, n.right.id, separator))
+          queue.append((n.right, level+1))
+          nodes_by_level[level+1].append(n.right.id)
+        else:
+          # insert phantom to make tree look good
+          ph_id = render_phantom(n.id, 'R')
+          nodes_by_level[level+1].append(ph_id)
+
+      bfs_visit() # recurse!
+
+    queue.append((self, 1))
+    bfs_visit()
+
+    if not compress:
+      ios.write('\n')
+
+    # make sure all nodes at the same level are vertically aligned
+    for level in nodes_by_level:
+      node_ids = nodes_by_level[level]
+      if len(node_ids) > 1:
+        ios.write(('{rank=same %s [style=invis]}' % '->'.join(node_ids)) + separator)
+
+    ios.write('}') # cap it off
+
+
+  def to_graphviz_string(self):
+    s = cStringIO.StringIO()
+    self.graphviz_render(s, True)
+    return s.getvalue()
+
+  def to_graphviz_img(self):
+    return GChartWrapper.GraphViz(self.to_graphviz_string())
+
+
+# from MIT 6.006 OCW
+# http://ocw.mit.edu/ans7870/6/6.006/s08/lecturenotes/search.htm
+class BST(object):
+    """
+Simple binary search tree implementation.
+This BST supports insert, find, and delete-min operations.
+Each tree contains some (possibly 0) BSTnode objects, representing nodes,
+and a pointer to the root.
+"""
+
+    def __init__(self):
+        self.root = None
+
+    def to_graphviz_img(self):
+        if self.root:
+            return GChartWrapper.GraphViz(self.root.to_graphviz_string())
+        else:
+            return ''
+
+    def insert(self, t):
+        """Insert data t into this BST, modifying it in-place."""
+        new = TNode(t)
+        if self.root is None:
+            self.root = new
+        else:
+            node = self.root
+            while True:
+                if t < node.data:
+                    # Go left
+                    if node.left is None:
+                        node.left = new
+                        new.parent = node
+                        break
+                    node = node.left
+                else:
+                    # Go right
+                    if node.right is None:
+                        node.right = new
+                        new.parent = node
+                        break
+                    node = node.right
+        return new
+
+    def find(self, t):
+        """Return the node for data t if is in the tree, or None otherwise."""
+        node = self.root
+        while node is not None:
+            if t == node.data:
+                return node
+            elif t < node.data:
+                node = node.left
+            else:
+                node = node.right
+        return None
+
+    def delete_min(self):
+        """Delete the minimum data (and return the old node containing it)."""
+        if self.root is None:
+            return None, None
+        else:
+            # Walk to leftmost node.
+            node = self.root
+            while node.left is not None:
+                node = node.left
+            # Remove that node and promote its right subtree.
+            if node.parent is not None:
+                node.parent.left = node.right
+            else: # The root was smallest.
+                self.root = node.right
+            if node.right is not None:
+                node.right.parent = node.parent
+            parent = node.parent
+            node.disconnect()
+            return node, parent
+
+    def __str__(self):
+        if self.root is None:
+            return 'empty tree'
+        else:
+            return 'tree with root: %s' % str(self.root)
+
+if __name__ == "__main__":
+  # simple test tree
+  r = TNode('a',
+            left=TNode('b0',
+                       left=TNode('c0',
+                                  right=TNode('d1')),
+                       right=TNode('c1',
+                                   left=TNode('d3'),
+                                   right=TNode('d4'))),
+            right=TNode('b1',
+                        left=TNode('c2',
+                                   left=TNode('d2'))))
+
+  f = open('test.dot', 'w')
+  r.graphviz_render(f)
+  f.close()
+
+  '''
+  t = BST()
+  import random
+  nums = range(10)
+  random.shuffle(nums)
+  for i in nums:
+    t.insert(i)
+
+  f = open('test.dot', 'w')
+  t.root.graphviz_render(f)
+  f.close()
+  '''
+
+
+'''
+/* balanced tree hack from http://www.graphviz.org/content/FaqBalanceTree */
+
+/*
+digraph G {
+  a -> b0
+  xb [label="",width=.1,style=invis]
+  a -> xb [style=invis]
+  a -> b1
+
+  {rank=same b0 -> xb -> b1 [style=invis]}
+
+  b0 -> c0
+  xc [label="",width=.1,style=invis]
+  b0 -> xc [style=invis]
+  b0 -> c1
+
+  {rank=same c0 -> xc -> c1 [style=invis]}
+}
+*/
+'''
+
+'''
+from bintree_module import TNode
+import html_module
+
+r = TNode('a',
+          left=TNode('b0',
+                     left=TNode('c0',
+                                right=TNode('d1')),
+                     right=TNode('c1',
+                                 left=TNode('d3'),
+                                 right=TNode('d4'))),
+          right=TNode('b1',
+                      left=TNode('c2')))
+
+def highlight_and_display(root):
+    def f(node):
+        node.highlight()
+        html_module.display_img(root.to_graphviz_img()) #break
+        node.reset_style()
+    return f
+
+def preorder(t, visitfn):
+    if not t:
+        return
+    visitfn(t)
+    preorder(t.left, visitfn)
+    preorder(t.right, visitfn)
+
+preorder(r, highlight_and_display(r))
+'''
+
+'''
+from bintree_module import BST
+import html_module
+import random
+
+t = BST()
+html_module.display_img(t.to_graphviz_img())
+
+nums = range(10)
+random.shuffle(nums)
+for i in nums:
+  t.insert(i)
+  html_module.display_img(t.to_graphviz_img())
+'''
+
+# insertion into a BST with each step animated
+#
+# TODO: think of a more elegant way to separate out algorithm from HTML
+# rendering code
+'''
+import html_module, GChartWrapper, random
+from bintree_module import TNode
+
+class BST:
+    def __init__(self):
+        self.root = None
+        
+    def to_graphviz_img(self):
+        if self.root:
+            return GChartWrapper.GraphViz(self.root.to_graphviz_string())
+        else:
+            return ''        
+        
+    def insert(self, t):
+        """Insert data t into this BST, modifying it in-place."""
+        new = TNode(t)
+        if self.root is None:
+            self.root = new
+        else:
+            node = self.root
+            while True:
+                node.highlight()
+                html_module.display_img(self.to_graphviz_img()) #break
+                node.reset_style()
+                if t < node.data:
+                    # Go left
+                    if node.left is None:
+                        node.left = new
+                        new.parent = node
+
+                        new.highlight()
+                        html_module.display_img(self.to_graphviz_img()) #break
+                        new.reset_style()
+
+                        break
+                    node = node.left
+                else:
+                    # Go right
+                    if node.right is None:
+                        node.right = new
+                        new.parent = node
+
+                        new.highlight()
+                        html_module.display_img(self.to_graphviz_img()) #break
+                        new.reset_style()
+
+                        break
+                    node = node.right
+        return new
+
+t = BST()
+nums = range(10)
+random.shuffle(nums)
+for i in nums:
+      t.insert(i)
+'''
diff --git a/v3/bottle_server.py b/v3/bottle_server.py
new file mode 100644
index 000000000..b50796181
--- /dev/null
+++ b/v3/bottle_server.py
@@ -0,0 +1,108 @@
+# Lightweight OPT server that works on both Python 2 and 3
+
+# to invoke, run 'python bottle_server.py'
+# and visit http://localhost:8080/index.html
+#
+# external dependencies: bottle
+#
+# easy_install pip
+# pip install bottle
+
+# From an OPT user: A couple notes: to get bottle_server.py running,
+# I had to replace cStringIO with io and urllib2 with urllib, for
+# compatibility from 2.x to 3.x Ii was running from /v3/).
+
+from bottle import route, get, request, run, template, static_file
+import StringIO # NB: don't use cStringIO since it doesn't support unicode!!!
+import json
+import pg_logger
+import urllib
+import urllib2
+
+
+@route('/<filepath:path>')
+def index(filepath):
+    # special-case for testing name_lookup.py ...
+    if 'name_lookup.py' in filepath:
+        return json.dumps(dict(name='TEST NAME', email='TEST EMAIL'))
+    return static_file(filepath, root='.')
+
+@get('/exec')
+def get_exec():
+  out_s = StringIO.StringIO()
+
+  def json_finalizer(input_code, output_trace):
+    ret = dict(code=input_code, trace=output_trace)
+    json_output = json.dumps(ret, indent=None)
+    out_s.write(json_output)
+
+  options = json.loads(request.query.options_json)
+
+  pg_logger.exec_script_str_local(request.query.user_script,
+                                  request.query.raw_input_json,
+                                  options['cumulative_mode'],
+                                  options['heap_primitives'],
+                                  json_finalizer)
+
+  return out_s.getvalue()
+
+
+@get('/load_matrix_problem.py')
+def load_matrix_problem():
+  prob_name = request.query.problem_name
+  assert type(prob_name) in (str, unicode)
+
+  # whitelist
+  assert prob_name in ('python_comprehension-1',)
+
+  fn = 'matrix-demo/' + prob_name + '.py'
+  f = open(fn)
+  cod = f.read()
+  f.close()
+
+  import doctest
+  import sys
+  p = doctest.DocTestParser()
+  examples = p.get_examples(cod)
+  if len(examples):
+    first_ex = examples[0]
+    #print >> sys.stderr, 'Source:', `first_ex.source`
+    testCod = 'result = ' + first_ex.source
+
+  return json.dumps(dict(code=cod, test=testCod))
+
+
+@get('/submit_matrix_problem.py')
+def submit_matrix_problem():
+  user_code = request.query.submitted_code
+  prob_name = request.query.problem_name
+  assert type(prob_name) in (str, unicode)
+
+  # whitelist
+  assert prob_name in ('python_comprehension-1',)
+
+  test_fn = 'matrix-demo/' + prob_name + '.test.py'
+  test_cod = open(test_fn).read()
+
+  # concatenate!
+  script = test_cod + '\n' + user_code + \
+'''
+import doctest
+(n_fail, n_tests) = doctest.testmod(verbose=False)
+if n_fail == 0:
+    print("All %d tests passed!" % n_tests)
+'''
+
+  url = 'http://ec2-107-20-94-197.compute-1.amazonaws.com/cgi-bin/run_code.py'
+  values = {'user_script' : script}
+
+  data = urllib.urlencode(values)
+  req = urllib2.Request(url, data)
+  response = urllib2.urlopen(req)
+  the_page = response.read()
+  return the_page
+
+
+if __name__ == "__main__":
+    #run(host='localhost', port=8080, reloader=True)
+    run(host='0.0.0.0', port=8003, reloader=True) # make it externally visible - DANGER this is very insecure since there's no sandboxing!
diff --git a/v3/callback_module.py b/v3/callback_module.py
new file mode 100644
index 000000000..bee9441ca
--- /dev/null
+++ b/v3/callback_module.py
@@ -0,0 +1,5 @@
+# this module contains a simple callback function to test whether
+# callback functions get properly displayed in the trace
+
+def callback_func(func_arg):
+  func_arg()
diff --git a/v3/commentary-bubbles-demo.css b/v3/commentary-bubbles-demo.css
new file mode 100644
index 000000000..75ceea3ab
--- /dev/null
+++ b/v3/commentary-bubbles-demo.css
@@ -0,0 +1,168 @@
+body {
+  background-color: white;
+
+  font-family: verdana, arial, helvetica, sans-serif;
+
+  font-size: 10pt;
+
+  margin-top:  30px;
+  margin-left: 30px;
+
+  /* center align */
+  /*
+  max-width: 1000px;
+  margin-left: auto;
+  margin-right: auto;
+  */
+}
+
+
+div#lessonHeader {
+  margin-bottom: 10px;
+  padding-bottom: 10px;
+  border-bottom: 1px solid #ccc;
+  width: 800px;
+}
+
+div#lessonTitle {
+  font-size: 16pt;
+  margin-bottom: 15pt;
+}
+
+div#lessonDescription {
+  font-size: 11pt;
+  line-height: 1.5em;
+}
+
+div#curStepNarration {
+  font-size: 11pt;
+  min-height: 60px;
+  margin-bottom: 12px;
+  line-height: 1.5em;
+  width: 800px;
+}
+
+
+/* For styling tricks, see: http://css-tricks.com/textarea-tricks/ */
+textarea.bubbleInputText {
+  border: 1px solid #ccc;
+  outline: none;
+  overflow: auto; /* to look pretty on IE */
+
+  /* make sure textarea doesn't grow and stretch the enclosing bubble */
+  resize: none;
+  width: 225px;
+  max-width: 225px;
+  height: 35px;
+  max-height: 35px;
+}
+
+
+.ui-tooltip-pgbootstrap,
+textarea.bubbleInputText {
+  font-family: verdana, arial, helvetica, sans-serif;
+	font-size: 9pt;
+	line-height: 1.3em;
+}
+
+
+/* modified version of Twitter bootstrap style by Philip Guo */
+.ui-tooltip-pgbootstrap{
+	color: #333;
+	background-color: #ffffff;
+
+	max-width: 250px;
+	min-width: 10px;
+
+	border: 2px solid #4284D3;
+
+  cursor: pointer;
+
+	*border-right-width: 2px;
+	*border-bottom-width: 2px;
+
+	-webkit-border-radius: 5px;
+	-moz-border-radius: 5px;
+	border-radius: 5px;
+
+  /* way too poofy ...
+	-webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+	-moz-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+  */
+
+	-webkit-box-shadow: 2px 2px 3px 0px rgba(0, 0, 0, 0.2);
+	-moz-box-shadow: 2px 2px 3px 0px rgba(0, 0, 0, 0.2);
+	box-shadow: 2px 2px 3px 0px rgba(0, 0, 0, 0.2);
+
+	-webkit-background-clip: padding-box;
+	-moz-background-clip: padding;
+	background-clip: padding-box;
+}
+
+	.ui-tooltip-pgbootstrap .ui-tooltip-titlebar{
+		font-size: 18px;
+		line-height: 22px;
+
+		border-bottom: 1px solid #ccc;
+		background-color: transparent;
+	}
+
+	.ui-tooltip-pgbootstrap .ui-tooltip-content{
+		padding: 5px /* 5px is minimum or else it might look ugly */ 8px;
+	}
+	
+
+		.ui-tooltip-pgbootstrap .ui-tooltip-titlebar .ui-state-default{
+			right: 9px; top: 49%;
+			border-style: none;
+		}
+
+	.ui-tooltip-pgbootstrap .ui-tooltip-icon{
+		background: white;
+	}
+
+		.ui-tooltip-pgbootstrap .ui-tooltip-icon .ui-icon{
+			width: auto;
+			height: auto;
+			float: right;
+			font-size: 20px;
+			font-weight: bold;
+			line-height: 18px;
+			color: #000000;
+			text-shadow: 0 1px 0 #ffffff;
+			opacity: 0.2;
+			filter: alpha(opacity=20);
+		}
+
+		.ui-tooltip-pgbootstrap .ui-tooltip-icon .ui-icon:hover{
+			color: #000000;
+			text-decoration: none;
+			cursor: pointer;
+			opacity: 0.4;
+			filter: alpha(opacity=40);
+		}
+
+
+/* Add rounded corners to your tooltips in: FF3+, Chrome 2+, Opera 10.6+, IE9+, Safari 2+ */
+.ui-tooltip-pgbootstrap{
+	-moz-border-radius: 5px;
+	-webkit-border-radius: 5px;
+	border-radius: 5px;
+}
+
+
+.ui-tooltip-pgbootstrap-stub{
+	border: 1px solid #999;
+
+  /*
+	-webkit-box-shadow: none;
+	-moz-box-shadow: none;
+	box-shadow: none;
+  */
+}
+
+	.ui-tooltip-pgbootstrap-stub .ui-tooltip-content{
+		padding: 6px 9px;
+	}
+	
diff --git a/v3/commentary-bubbles-demo.html b/v3/commentary-bubbles-demo.html
new file mode 100644
index 000000000..dc650cbb8
--- /dev/null
+++ b/v3/commentary-bubbles-demo.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <title>Online Python Tutor commentary bubbles demo</title>
+
+<!-- dependencies for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+
+<!-- Python Tutor frontend code and styles -->
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="commentary-bubbles-demo.js"></script>
+<link rel="stylesheet" href="commentary-bubbles-demo.css"/>
+
+
+</head>
+
+<body>
+
+<div id="lessonHeader">
+  <div id="lessonTitle">Linked List Recursion Example</div>
+  <div id="lessonDescription">This code shows a function that sums up
+  the elements of a linked list using recursion.</div>
+</div>
+
+<div id="curStepNarration">At the current step, the program is about to
+return from the base case of the recursion, which returns 0 to its
+caller.
+</div>
+
+<p><button id="modeToggleBtn">Add/Edit Annotations</button></p>
+
+
+<!--<div id="listSumDiv"></div>-->
+
+<div id="listSumDiv"><div class="ExecutionVisualizer"><table border="0" class="visualizer"><tbody><tr><td valign="top"><div id="codeDisplayDiv">       <div id="pyCodeOutputDiv"><table id="pyCodeOutput"><tr><td id="gutterTD" valign="top" rowspan="9"><svg id="leftCodeGutterSVG" style="height: 205px;"><polygon id="prevLineArrow" points="0,3 12,3 12,0 18,5 12,10 12,7 0,7" fill="#c9e6ca" style="display: inline;" transform="translate(0, 51.000030517578125)"></polygon><polygon id="curLineArrow" points="0,3 12,3 12,0 18,5 12,10 12,7 0,7" fill="#e93f34" transform="translate(0, 62.000030517578125)" style=""></polygon></svg></td><td class="lineNo" id="lineNo1">1</td><td class="cod" id="v1__cod1" style="">def&nbsp;listSum(numbers):</td></tr><tr><td class="lineNo" id="lineNo2">2</td><td class="cod" id="v1__cod2" style="">&nbsp;&nbsp;if&nbsp;not&nbsp;numbers:</td></tr><tr><td class="lineNo" id="lineNo3">3</td><td class="cod" id="v1__cod3" style="">&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;0</td></tr><tr><td class="lineNo" id="lineNo4">4</td><td class="cod" id="v1__cod4" style="">&nbsp;&nbsp;else:</td></tr><tr><td class="lineNo" id="lineNo5">5</td><td class="cod" id="v1__cod5" style="">&nbsp;&nbsp;&nbsp;&nbsp;(f,&nbsp;rest)&nbsp;=&nbsp;numbers</td></tr><tr><td class="lineNo" id="lineNo6">6</td><td class="cod" id="v1__cod6" style="">&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;f&nbsp;+&nbsp;listSum(rest)</td></tr><tr><td class="lineNo" id="lineNo7">7</td><td class="cod" id="v1__cod7" style=""></td></tr><tr><td class="lineNo" id="lineNo8">8</td><td class="cod" id="v1__cod8" style="">myList&nbsp;=&nbsp;(1,&nbsp;(2,&nbsp;(3,&nbsp;None)))</td></tr><tr><td class="lineNo" id="lineNo9">9</td><td class="cod" id="v1__cod9" style="">total&nbsp;=&nbsp;listSum(myList)</td></tr></table></div>       <div id="editCodeLinkDiv"><a id="editBtn" href="http://pythontutor.com/visualize.html#code=def+listSum(numbers)%3A%0A++if+not+numbers%3A%0A++++return+0%0A++else%3A%0A++++(f,+rest)+%3D+numbers%0A++++return+f+%2B+listSum(rest)%0A%0AmyList+%3D+(1,+(2,+(3,+None)))%0Atotal+%3D+listSum(myList)">Edit code</a></div>       <div id="executionSlider" class="ui-slider ui-slider-horizontal ui-widget ui-widget-content ui-corner-all" style="font-size: 0.9em;"><a class="ui-slider-handle ui-state-default ui-corner-all" href="#" style="left: 77.77777777777779%; width: 0.8em; height: 1.4em;"></a></div>       <div id="vcrControls">         <button id="jmpFirstInstr" ,="" type="button">&lt;&lt; First</button>         <button id="jmpStepBack" ,="" type="button">&lt; Back</button>         <span id="curInstr">Step 15 of 18</span>         <button id="jmpStepFwd" ,="" type="button">Forward &gt;</button>         <button id="jmpLastInstr" ,="" type="button">Last &gt;&gt;</button>       </div>       <div id="errorOutput" style="display: none;"></div>       <div id="legendDiv"><svg id="prevLegendArrowSVG"><polygon points="0,3 12,3 12,0 18,5 12,10 12,7 0,7" fill="#c9e6ca"></polygon></svg> line that has just executed<p style="margin-top: 4px"><svg id="curLegendArrowSVG"><polygon points="0,3 12,3 12,0 18,5 12,10 12,7 0,7" fill="#e93f34"></polygon></svg> next line to execute</p></div>       <div id="progOutputs">         Program output:<br>         <textarea id="pyStdout" cols="50" rows="10" wrap="off" readonly=""></textarea>       </div>     </div></td><td valign="top"><div id="dataViz">       <table id="stackHeapTable">         <tbody><tr>           <td id="stack_td">             <div id="globals_area">               <div id="stackHeader">Frames</div>             <div class="stackFrame" id="v1__globals" style="display: block;"><div id="v1__globals_header" class="stackFrameHeader">Global variables</div><table class="stackFrameVarTable" id="v1__global_table"><tr id="v1__global__listSum_tr"><td class="stackFrameVar">listSum</td><td class="stackFrameValue" data-curvalue="object:REF,1"><div class="stack_pointer" id="v1__global__listSum">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 304.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position: absolute; left: 724.65px; top: 259.54168701171875px; z-index: 0;" width="157.7" height="69.75" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 37.35 48.125 C 68.85 24.875 68.85 24.875 120.35 21.625000000000004" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M120.35,21.625000000000004 L110.59119347905715,25.750008519603746 L114.8609953438376,21.972603056125227 L110.14878958944323,18.764002593578887 L120.35,21.625000000000004" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr><tr id="v1__global__myList_tr"><td class="stackFrameVar">myList</td><td class="stackFrameValue" data-curvalue="object:REF,2"><div class="stack_pointer" id="v1__global__myList">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 329.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position: absolute; left: 724.65px; top: 315.91668701171875px; z-index: 0;" width="157.7" height="40.5" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 37.35 16.75 C 88.85 10.25 88.85 10.25 120.35 23.75" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M120.35,23.75 L112.53598560726692,16.595198879761902 L115.29431435933272,21.584349358102596 L109.77970297212477,23.02970787697481 L120.35,23.75" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr></table></div></div>             <div id="stack"><div class="stackFrame" id="v1__stack0"><div class="stackFrameHeader">listSum</div><table class="stackFrameVarTable"><tr id="v1__listSum_f1__numbers_tr"><td class="stackFrameVar">numbers</td><td class="stackFrameValue" data-curvalue="object:REF,2"><div class="stack_pointer" id="v1__listSum_f1__numbers">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 402.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position: absolute; left: 724.65px; top: 308.16668701171875px; z-index: 0;" width="157.7" height="128.99999999999997" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 37.35 97.49999999999997 C 68.85 54.499999999999986 68.85 54.499999999999986 120.35 31.49999999999999" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M120.35,31.49999999999999 L112.64826880284079,38.77552998527973 L115.32862656516355,33.74406078971109 L109.79219143411757,32.38469106821516 L120.35,31.49999999999999" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr><tr id="v1__listSum_f1__f_tr"><td class="stackFrameVar">f</td><td class="stackFrameValue" data-curvalue="number:1"><span class="numberObj">1</span></td></tr><tr id="v1__listSum_f1__rest_tr"><td class="stackFrameVar">rest</td><td class="stackFrameValue" data-curvalue="object:REF,3"><div class="stack_pointer" id="v1__listSum_f1__rest">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 452.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position: absolute; left: 690.45px; top: 287.46668701171876px; z-index: 0;" width="302.09999999999997" height="220.39999999999998" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 71.55 168.2 C 141.04999999999998 100.19999999999999 141.04999999999998 100.19999999999999 230.54999999999995 52.2" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M230.54999999999995,52.2 L223.39214432486432,60.01121643112831 L225.703247408181,54.799805629983936 L220.0833007957939,53.842622223358724 L230.54999999999995,52.2" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr></table></div><div class="stackFrame" id="v1__stack1"><div class="stackFrameHeader">listSum</div><table class="stackFrameVarTable"><tr id="v1__listSum_f2__numbers_tr"><td class="stackFrameVar">numbers</td><td class="stackFrameValue" data-curvalue="object:REF,3"><div class="stack_pointer" id="v1__listSum_f2__numbers">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 525.6666870117188px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position: absolute; left: 690.45px; top: 254.61668701171874px; z-index: 0;" width="302.09999999999997" height="359.09999999999997" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 71.55 274.04999999999995 C 141.04999999999998 169.54999999999998 141.04999999999998 169.54999999999998 230.54999999999995 85.05" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M230.54999999999995,85.05 L225.68206534877908,94.460271634307 L226.5510322068814,88.82601067127736 L220.87623358533517,89.37067626124703 L230.54999999999995,85.05" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr><tr id="v1__listSum_f2__f_tr"><td class="stackFrameVar">f</td><td class="stackFrameValue" data-curvalue="number:2"><span class="numberObj">2</span></td></tr><tr id="v1__listSum_f2__rest_tr"><td class="stackFrameVar">rest</td><td class="stackFrameValue" data-curvalue="object:REF,4"><div class="stack_pointer" id="v1__listSum_f2__rest">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 575.6666870117188px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position: absolute; left: 656.25px; top: 232.11668701171874px; z-index: 0;" width="446.5" height="454.09999999999997" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 105.75 346.54999999999995 C 213.25 217.04999999999998 213.25 217.04999999999998 340.75 107.55" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M340.75,107.55 L335.4444763961483,116.7206825966758 L336.57771101828195,111.13357428457036 L330.88356367033145,111.41049661994373 L340.75,107.55" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr></table></div><div class="stackFrame" id="v1__stack2"><div class="stackFrameHeader">listSum</div><table class="stackFrameVarTable"><tr id="v1__listSum_f3__numbers_tr"><td class="stackFrameVar">numbers</td><td class="stackFrameValue" data-curvalue="object:REF,4"><div class="stack_pointer" id="v1__listSum_f3__numbers">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 759px; top: 648.6666870117188px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#cccccc" stroke="none"></circle></svg></div><svg style="position:absolute;left:656.25px;top:199.26668701171874px" width="446.5" height="592.8" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 105.75 452.4 C 213.25 286.4 213.25 286.4 340.75 140.4" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#cccccc" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M340.75,140.4 L336.8088860240394,150.23451171276378 L337.1323998294117,144.54282138231417 L331.53620426473043,145.6302933138332 L340.75,140.4" class="" stroke="#cccccc" fill="#cccccc"></path></svg></td></tr><tr id="v1__listSum_f3__f_tr"><td class="stackFrameVar">f</td><td class="stackFrameValue" data-curvalue="number:3"><span class="numberObj">3</span></td></tr><tr id="v1__listSum_f3__rest_tr"><td class="stackFrameVar">rest</td><td class="stackFrameValue" data-curvalue="object:null"><span class="nullObj">None</span></td></tr></table></div><div class="stackFrame highlightedStackFrame" id="v1__stack3"><div class="stackFrameHeader">listSum</div><table class="stackFrameVarTable"><tr id="v1__listSum_f4__numbers_tr"><td class="stackFrameVar">numbers</td><td class="stackFrameValue" data-curvalue="object:null"><span class="nullObj">None</span></td></tr><tr id="v1__listSum_f4____return___tr"><td class="stackFrameVar"><span class="retval">Return<br>value</span></td><td class="stackFrameValue" data-curvalue="number:0"><span class="numberObj">0</span></td></tr></table></div></div>           </td>           <td id="heap_td">             <div id="heap">               <div id="heapHeader">Objects</div>             <table class="heapRow"><td class="toplevelHeapObject" id="toplevel_heap_object_1"><div class="heapObject" id="v1__heap_object_1"><div class="funcObj">function listSum(numbers)</div></div></td></table><table class="heapRow"><td class="toplevelHeapObject" id="toplevel_heap_object_2"><div class="heapObject" id="v1__heap_object_2"><div class="typeLabel">tuple</div><table class="tupleTbl"><tbody><tr><td class="tupleHeader">0</td><td class="tupleHeader">1</td></tr><tr><td class="tupleElt"><span class="numberObj">1</span></td><td class="tupleElt"><div id="v1__heap_pointer_src_1">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 889px; top: 348.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#005583" stroke="none"></circle></svg></div><svg style="position:absolute;left:878.95px;top:334.2666870117188px" width="55.099999999999994" height="22.799999999999997" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 13.05 17.4 C 27.549999999999997 11.399999999999999 27.549999999999997 11.399999999999999 42.05 5.4" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#005583" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M42.05,5.4 L34.162774805670125,12.474014329496942 L36.97229700195136,7.513511831906296 L31.4728506559712,6.0114832410714065 L42.05,5.4" class="" stroke="#005583" fill="#005583"></path></svg></td></tr></tbody></table></div></td><td class="toplevelHeapObject" id="toplevel_heap_object_3"><div class="heapObject" id="v1__heap_object_3"><div class="typeLabel">tuple</div><table class="tupleTbl"><tbody><tr><td class="tupleHeader">0</td><td class="tupleHeader">1</td></tr><tr><td class="tupleElt"><span class="numberObj">2</span></td><td class="tupleElt"><div id="v1__heap_pointer_src_2">&nbsp;</div><div style="position: absolute; height: 6px; width: 6px; left: 965px; top: 348.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="#005583" stroke="none"></circle></svg></div><svg style="position:absolute;left:954.95px;top:334.2666870117188px" width="55.099999999999994" height="22.799999999999997" pointer-events="none" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml" class="_jsPlumb_connector "><path d="M 13.05 17.4 C 27.549999999999997 11.399999999999999 27.549999999999997 11.399999999999999 42.05 5.4" pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="#005583" stroke-width="1"></path><path pointer-events="all" version="1.1" xmlns="http://www.w3.org/1999/xhtml" d="M42.05,5.4 L34.162774805670125,12.474014329496942 L36.97229700195136,7.513511831906296 L31.4728506559712,6.0114832410714065 L42.05,5.4" class="" stroke="#005583" fill="#005583"></path></svg></td></tr></tbody></table></div><div style="position: absolute; height: 6px; width: 6px; left: 918px; top: 336.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="none"></circle></svg></div></td><td class="toplevelHeapObject" id="toplevel_heap_object_4"><div class="heapObject" id="v1__heap_object_4"><div class="typeLabel">tuple</div><table class="tupleTbl"><tbody><tr><td class="tupleHeader">0</td><td class="tupleHeader">1</td></tr><tr><td class="tupleElt"><span class="numberObj">3</span></td><td class="tupleElt"><span class="nullObj">None</span></td></tr></tbody></table></div><div style="position: absolute; height: 6px; width: 6px; left: 994px; top: 336.66668701171875px;" class="_jsPlumb_endpoint "><svg style="position:absolute;left:0px;top:0px" width="6" height="6" pointer-events="all" position="absolute" version="1.1" xmlns="http://www.w3.org/1999/xhtml"><circle cx="3" cy="3" r="3" version="1.1" xmlns="http://www.w3.org/1999/xhtml" style="" fill="none" stroke="none"></circle></svg></div></td></table></div>           </td>         </tr>       </tbody></table>     </div></td></tr></tbody></table></div></div>
+
+</body>
+</html>
diff --git a/v3/commentary-bubbles-demo.js b/v3/commentary-bubbles-demo.js
new file mode 100644
index 000000000..edace49e0
--- /dev/null
+++ b/v3/commentary-bubbles-demo.js
@@ -0,0 +1,418 @@
+// Run:
+//   python generate_json_trace.py --create_jsvar=listSumTrace tests/backend-tests/list_sum.txt
+// and copy-and-paste the output line into here:
+var listSumTrace = {"code": "def listSum(numbers):\n  if not numbers:\n    return 0\n  else:\n    (f, rest) = numbers\n    return f + listSum(rest)\n\nmyList = (1, (2, (3, None)))\ntotal = listSum(myList)\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": ["listSum"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 3, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"__return__": 0, "numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 3, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"__return__": 3, "numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"__return__": 5, "numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": 6, "numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList", "total"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"total": 6, "myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 9, "event": "return"}]};
+
+
+var qtipShared = {
+  show: {
+    ready: true, // show on document.ready instead of on mouseenter
+    delay: 0,
+    event: null,
+    effect: function() {$(this).show();}, // don't do any fancy fading because it screws up with scrolling
+  },
+  hide: {
+    fixed: true,
+    event: null,
+    effect: function() {$(this).hide();}, // don't do any fancy fading because it screws up with scrolling
+  },
+  style: {
+    classes: 'ui-tooltip-pgbootstrap', // my own customized version of the bootstrap style
+  },
+};
+
+
+function createSpeechBubble(domID, my, at, htmlContent, isInput) {
+  var hashID = '#' + domID;
+  $(hashID).qtip($.extend({}, qtipShared, {
+    content: htmlContent,
+    id: domID,
+    position: {
+      my: my,
+      at: at,
+      effect: null, // disable all cutesy animations
+    },
+  }));
+
+
+  if (isInput) {
+
+  }
+  else {
+    $('#ui-tooltip-' + domID + '-content').click(function() {
+      if (!$(hashID).data('qtip-minimized')) {
+        $(hashID)
+          .data('qtip-minimized', true)
+          .qtip('option', 'content.text', ' ');
+      }
+      else {
+        $(hashID)
+          .data('qtip-minimized', false)
+          .qtip('option', 'content.text', htmlContent);
+      }
+    });
+  }
+}
+
+
+// a speech bubble annotation to attach to:
+//   'codeline' - a line of code
+//   'frame'    - a stack frame
+//   'variable' - a variable within a stack frame
+//   'object'   - an object on the heap
+// (as determined by the 'type' param)
+//
+// domID is the ID of the element to attach to (without the leading '#' sign)
+function AnnotationBubble(type, domID) {
+  this.domID = domID;
+  this.hashID = '#' + domID;
+
+  this.type = type;
+
+  if (type == 'codeline') {
+    this.my = 'left center';
+    this.at = 'right center';
+  }
+  else if (type == 'frame') {
+    this.my = 'right center';
+    this.at = 'left center';
+  }
+  else if (type == 'variable') {
+    this.my = 'right center';
+    this.at = 'left center';
+  }
+  else if (type == 'object') {
+    this.my = 'bottom left';
+    this.at = 'top center';
+  }
+  else {
+    assert(false);
+  }
+
+  // possible states:
+  //   'invisible'
+  //   'edit'
+  //   'view'
+  //   'minimized'
+  //   'stub'
+  this.state = 'invisible';
+
+  this.text = ''; // the actual contents of the annotation bubble
+
+  this.qtipHidden = false; // is there a qtip object present but hidden? (TODO: kinda confusing)
+}
+
+AnnotationBubble.prototype.showStub = function() {
+  assert(this.state == 'invisible' || this.state == 'edit');
+  assert(this.text == '');
+
+  var myBubble = this; // to avoid name clashes with 'this' in inner scopes
+
+  // destroy then create a new tip:
+  this.destroyQTip();
+  $(this.hashID).qtip($.extend({}, qtipShared, {
+    content: ' ',
+    id: this.domID,
+    position: {
+      my: this.my,
+      at: this.at,
+      effect: null, // disable all cutesy animations
+    },
+    style: {
+      classes: 'ui-tooltip-pgbootstrap ui-tooltip-pgbootstrap-stub'
+    }
+  }));
+
+
+  $(this.qTipID())
+    .unbind('click') // unbind all old handlers
+    .click(function() {
+      myBubble.showEditor();
+    });
+
+  this.state = 'stub';
+}
+
+AnnotationBubble.prototype.showEditor = function() {
+  assert(this.state == 'stub' || this.state == 'view' || this.state == 'minimized');
+
+  var myBubble = this; // to avoid name clashes with 'this' in inner scopes
+
+  var ta = '<textarea class="bubbleInputText">' + this.text + '</textarea>';
+
+  // destroy then create a new tip:
+  this.destroyQTip();
+  $(this.hashID).qtip($.extend({}, qtipShared, {
+    content: ta,
+    id: this.domID,
+    position: {
+      my: this.my,
+      at: this.at,
+      effect: null, // disable all cutesy animations
+    }
+  }));
+
+  
+  $(this.qTipContentID()).find('textarea.bubbleInputText')
+    // set handler when the textarea loses focus
+    .blur(function() {
+      myBubble.text = $(this).val().trim(); // strip all leading and trailing spaces
+
+      if (myBubble.text) {
+        myBubble.showViewer();
+      }
+      else {
+        myBubble.showStub();
+      }
+    })
+    .focus(); // grab focus so that the user can start typing right away!
+
+  this.state = 'edit';
+}
+
+
+AnnotationBubble.prototype.bindViewerClickHandler = function() {
+  var myBubble = this;
+
+  $(this.qTipID())
+    .unbind('click') // unbind all old handlers
+    .click(function() {
+      if (globalAnnotationMode == 'edit') {
+        myBubble.showEditor();
+      }
+      else if (globalAnnotationMode == 'view') {
+        myBubble.minimizeViewer();
+      }
+      else {
+        assert(false);
+      }
+    });
+}
+
+AnnotationBubble.prototype.showViewer = function() {
+  assert(this.state == 'edit');
+  assert(this.text); // must be non-empty!
+
+  // destroy then create a new tip:
+  this.destroyQTip();
+  $(this.hashID).qtip($.extend({}, qtipShared, {
+    content: this.text,
+    id: this.domID,
+    position: {
+      my: this.my,
+      at: this.at,
+      effect: null, // disable all cutesy animations
+    }
+  }));
+
+  this.bindViewerClickHandler();
+  this.state = 'view';
+}
+
+
+AnnotationBubble.prototype.minimizeViewer = function() {
+  assert(this.state == 'view');
+
+  var myBubble = this;
+
+  $(this.hashID).qtip('option', 'content.text', ' '); //hack to "minimize" its size
+
+  $(this.qTipID())
+    .unbind('click') // unbind all old handlers
+    .click(function() {
+      if (globalAnnotationMode == 'edit') {
+        myBubble.showEditor();
+      }
+      else if (globalAnnotationMode == 'view') {
+        myBubble.restoreViewer();
+      }
+      else {
+        assert(false);
+      }
+    });
+
+  this.state = 'minimized';
+}
+
+AnnotationBubble.prototype.restoreViewer = function() {
+  assert(this.state == 'minimized');
+  $(this.hashID).qtip('option', 'content.text', this.text);
+  this.bindViewerClickHandler();
+  this.state = 'view';
+}
+
+// NB: actually DESTROYS the QTip object
+AnnotationBubble.prototype.makeInvisible = function() {
+  assert(this.state == 'stub' || this.state == 'edit');
+  this.destroyQTip();
+  this.state = 'invisible';
+}
+
+
+AnnotationBubble.prototype.destroyQTip = function() {
+  $(this.hashID).qtip('destroy');
+}
+
+AnnotationBubble.prototype.qTipContentID = function() {
+  return '#ui-tooltip-' + this.domID + '-content';
+}
+
+AnnotationBubble.prototype.qTipID = function() {
+  return '#ui-tooltip-' + this.domID;
+}
+
+
+AnnotationBubble.prototype.enterEditMode = function() {
+  assert(globalAnnotationMode == 'edit');
+  if (this.state == 'invisible') {
+    this.showStub();
+
+    if (this.type == 'codeline') {
+      this.redrawCodelineBubble();
+    }
+  }
+}
+
+AnnotationBubble.prototype.enterViewMode = function() {
+  assert(globalAnnotationMode == 'view');
+  if (this.state == 'stub') {
+    this.makeInvisible();
+  }
+  else if (this.state == 'edit') {
+    this.text = $(this.qTipContentID()).find('textarea.bubbleInputText').val().trim(); // strip all leading and trailing spaces
+
+    if (this.text) {
+      this.showViewer();
+
+      if (this.type == 'codeline') {
+        this.redrawCodelineBubble();
+      }
+    }
+    else {
+      this.makeInvisible();
+    }
+  }
+}
+
+AnnotationBubble.prototype.redrawCodelineBubble = function() {
+  assert(this.type == 'codeline');
+
+  if (isOutputLineVisible(this.domID)) {
+    if (this.qtipHidden) {
+      $(this.hashID).qtip('show');
+    }
+    else {
+      $(this.hashID).qtip('reposition');
+    }
+
+    this.qtipHidden = false;
+  }
+  else {
+    $(this.hashID).qtip('hide');
+    this.qtipHidden = true;
+  }
+}
+
+
+globalAnnotationMode = 'view';
+allBubbles = [];
+
+
+// returns True iff lineNo is visible in pyCodeOutputDiv
+// NB: copied, pasted, and modified from isOutputLineVisible in js/pytutor.js
+function isOutputLineVisible(lineDivID) {
+  var pcod = $('#pyCodeOutputDiv');
+
+  var lineNoTd = $('#' + lineDivID);
+  var LO = lineNoTd.offset().top;
+
+  var PO = pcod.offset().top;
+  var ST = pcod.scrollTop();
+  var H = pcod.height();
+
+  // add a few pixels of fudge factor on the bottom end due to bottom scrollbar
+  return (PO <= LO) && (LO < (PO + H - 25));
+}
+
+
+$(document).ready(function() {
+  /*
+  var listSumVisualizer = new ExecutionVisualizer('listSumDiv', listSumTrace,
+                                                  {embeddedMode: false,
+                                                   editCodeBaseURL: 'http://pythontutor.com/visualize.html'});
+
+  return;
+  */
+
+  // force vertical code scrolling
+  $('#pyCodeOutputDiv').css('max-height', '120px');
+
+  allBubbles.push(new AnnotationBubble('frame', 'v1__globals'));
+  allBubbles.push(new AnnotationBubble('frame', 'v1__stack0'));
+  allBubbles.push(new AnnotationBubble('frame', 'v1__stack1'));
+  allBubbles.push(new AnnotationBubble('frame', 'v1__stack2'));
+  allBubbles.push(new AnnotationBubble('frame', 'v1__stack3'));
+
+  allBubbles.push(new AnnotationBubble('object', 'v1__heap_object_1'));
+  allBubbles.push(new AnnotationBubble('object', 'v1__heap_object_2'));
+  allBubbles.push(new AnnotationBubble('object', 'v1__heap_object_3'));
+  allBubbles.push(new AnnotationBubble('object', 'v1__heap_object_4'));
+
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod1'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod2'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod3'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod4'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod5'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod6'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod7'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod8'));
+  allBubbles.push(new AnnotationBubble('codeline', 'v1__cod9'));
+
+  allBubbles.push(new AnnotationBubble('variable', 'v1__global__listSum_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__global__myList_tr'));
+
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f1__numbers_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f1__f_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f1__rest_tr'));
+
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f2__numbers_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f2__f_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f2__rest_tr'));
+
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f3__numbers_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f3__f_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f3__rest_tr'));
+
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f4__numbers_tr'));
+  allBubbles.push(new AnnotationBubble('variable', 'v1__listSum_f4____return___tr'));
+
+
+  $('#pyCodeOutputDiv').scroll(function() {
+    $.each(allBubbles, function(i, e) {
+      if (e.type == 'codeline') {
+        e.redrawCodelineBubble();
+      }
+    });
+  });
+
+
+  $('#modeToggleBtn').click(function() {
+    if (globalAnnotationMode == 'view') {
+      $('#modeToggleBtn').html('View Annotations');
+      globalAnnotationMode = 'edit';
+      $.each(allBubbles, function(i, e) {
+        e.enterEditMode();
+      });
+    }
+    else if (globalAnnotationMode == 'edit') {
+      $('#modeToggleBtn').html('Add/Edit Annotations');
+      globalAnnotationMode = 'view';
+      $.each(allBubbles, function(i, e) {
+        e.enterViewMode();
+      });
+    }
+    else {
+      assert(false);
+    }
+  });
+});
diff --git a/v3/composingprograms.html b/v3/composingprograms.html
new file mode 100644
index 000000000..7425eadfa
--- /dev/null
+++ b/v3/composingprograms.html
@@ -0,0 +1,217 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Online Python Tutor - Composing Programs - Python 3</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+<link rel="stylesheet" href="css/composingprograms.css"/> <!-- include AFTER pytutor.css -->
+
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/composingprograms.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+</head>
+
+<body>
+
+
+<table id="experimentalHeader">
+
+<tr>
+<td valign="top">
+
+<div id="signinButton" style="font-size: 8pt;">
+  <div style="width: 200px; margin-bottom: 8px;">
+  [Optional] Sign in with either a Berkeley email or Google account
+  </div>
+
+  <span
+    class="g-signin"
+    data-callback="signinCallback"
+    data-clientid="639826413051-n4c566bfu9jnee6893qolvbt8od9kiaf.apps.googleusercontent.com"
+    data-cookiepolicy="single_host_origin"
+    data-requestvisibleactions="http://schemas.google.com/AddActivity"
+    data-scope="https://www.googleapis.com/auth/plus.profile.emails.read">
+  </span>
+</div>
+
+<div id="loggedInDiv" style="display: none; margin-bottom: 8px;">
+<div id="loggedInNameDisplay"></div>
+<button id="signoutButton" style="font-size: 8pt; margin-top: 5px;">Sign out to chat anonymously</button>
+</div>
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 8pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+
+<td valign="top" style="padding-left: 20px;">
+  <div id="togetherjsStatus"></div>
+  <div id="surveyHeader" style="display: none;"></div>
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write Python code here:</div>
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+<p style="margin-top: 20px; line-height: 200%;">
+Execute code using
+  <select id="pythonVersionSelector">
+    <option value="3">Python 3.3</option>
+  </select>
+and
+  <select id="cumulativeModeSelector">
+    <option value="true">display frames of exited functions.</option>
+    <option value="false">don't display exited functions.</option>
+  </select>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<p>
+This version of <a href="http://pythontutor.com/">Online Python Tutor</a> supports
+<a href="http://www.python.org/doc/3.3.0/">Python 3.3</a> with limited module
+imports and no file I/O. 
+The following modules may be imported: 
+bisect,
+collections,
+datetime,
+functools,
+heapq,
+itertools,
+json,
+math,
+operator,
+random,
+re,
+string,
+io.
+</p>
+
+<p>Have a question? Maybe the <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/user-FAQ.md">FAQ</a>
+or other <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/">documentation</a>
+can help. Or check out its code at <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>.</p>
+
+<p>By using Online Python Tutor, your visualized code, options, and IP
+address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, Online Python Tutor does not collect any personal
+information, cookies, or session state from users.</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+
+<!-- Place this asynchronous JavaScript just before your </body> tag -->
+<script type="text/javascript">
+  (function() {
+   var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
+   po.src = 'https://apis.google.com/js/client:plusone.js';
+   var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
+ })();
+</script>
+
+</body>
+</html>
diff --git a/v3/csc108h.html b/v3/csc108h.html
new file mode 100644
index 000000000..49f483dce
--- /dev/null
+++ b/v3/csc108h.html
@@ -0,0 +1,153 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Online Python Tutor - csc108h</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/csc108h.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+</head>
+
+<body>
+
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+</td>
+
+<td valign="top" style="padding-left: 20px;">
+  <div id="togetherjsStatus"></div>
+  <div id="surveyHeader" style="display: none;"></div>
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write Python code here:</div>
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<p>
+This version of <a href="http://pythontutor.com/">Online Python Tutor</a> supports
+<a href="http://www.python.org/doc/3.3.0/">Python 3.3</a> with limited module
+imports and no file I/O. 
+The following modules may be imported: 
+bisect,
+collections,
+datetime,
+functools,
+heapq,
+itertools,
+json,
+math,
+operator,
+random,
+re,
+string,
+io.
+</p>
+
+<p>Have a question? Maybe the <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/user-FAQ.md">FAQ</a>
+or other <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/">documentation</a>
+can help. Or check out its code at <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>.</p>
+
+<p>By using Online Python Tutor, your visualized code, options, and IP
+address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, Online Python Tutor does not collect any personal
+information, cookies, or session state from users.</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+</body>
+</html>
diff --git a/v3/csc108h_shared.html b/v3/csc108h_shared.html
new file mode 100644
index 000000000..481208108
--- /dev/null
+++ b/v3/csc108h_shared.html
@@ -0,0 +1,173 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Online Python Tutor - csc108h with shared sessions</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/csc108h.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+</head>
+
+<body>
+
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 8pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+
+<td valign="top" style="padding-left: 20px;">
+  <div id="togetherjsStatus"></div>
+  <div id="surveyHeader" style="display: none;"></div>
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write Python code here:</div>
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<p>
+This version of <a href="http://pythontutor.com/">Online Python Tutor</a> supports
+<a href="http://www.python.org/doc/3.3.0/">Python 3.3</a> with limited module
+imports and no file I/O. 
+The following modules may be imported: 
+bisect,
+collections,
+datetime,
+functools,
+heapq,
+itertools,
+json,
+math,
+operator,
+random,
+re,
+string,
+io.
+</p>
+
+<p>Have a question? Maybe the <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/user-FAQ.md">FAQ</a>
+or other <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/">documentation</a>
+can help. Or check out its code at <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>.</p>
+
+<p>By using Online Python Tutor, your visualized code, options, and IP
+address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, Online Python Tutor does not collect any personal
+information, cookies, or session state from users.</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+</body>
+</html>
diff --git a/v3/css/basic.css b/v3/css/basic.css
new file mode 100644
index 000000000..611807f58
--- /dev/null
+++ b/v3/css/basic.css
@@ -0,0 +1,61 @@
+/*
+ * SimpleModal Basic Modal Dialog
+ * http://www.ericmmartin.com/projects/simplemodal/
+ * http://code.google.com/p/simplemodal/
+ *
+ * Copyright (c) 2010 Eric Martin - http://ericmmartin.com
+ *
+ * Licensed under the MIT license:
+ *   http://www.opensource.org/licenses/mit-license.php
+ *
+ * Revision: $Id: basic.css 257 2010-07-27 23:06:56Z emartin24 $
+ */
+
+.basic-modal-content {display:none;}
+
+/* Overlay */
+#simplemodal-overlay {background-color:#000; cursor:wait;}
+
+/* Container */
+.simplemodal-container {
+  height:200px; 
+  width:300px; 
+  color:#bbb; 
+  background-color:#333; 
+  border:4px solid #444; 
+  padding:5px;
+}
+
+.simplemodal-container .simplemodal-data {padding:8px;}
+
+.simplemodal-container code {
+    background:#141414; 
+    border-left:3px solid #65B43D; 
+    color:#bbb; 
+    display:block; 
+    font-size:12px; 
+    margin-bottom:12px; 
+    padding:4px 6px 6px;
+}
+
+.simplemodal-container a {color:#ddd;}
+
+.simplemodal-container a.modalCloseImg {
+    background:url(x.png) no-repeat; 
+    width:25px; 
+    height:29px; 
+    display:inline; 
+    z-index:3200; 
+    position:absolute; 
+    top:-15px; 
+    right:-16px; 
+    cursor:pointer;}
+
+.simplemodal-container h3 {
+    color:#84b8d9;
+    text-align: center;
+}
+
+.feedbacktext {
+    color:#84b8d9;
+}
diff --git a/v3/css/codemirror.css b/v3/css/codemirror.css
new file mode 100644
index 000000000..098a317a2
--- /dev/null
+++ b/v3/css/codemirror.css
@@ -0,0 +1,272 @@
+/* BASICS */
+
+.CodeMirror {
+  /* Set height, width, borders, and global font properties here */
+  font-family: monospace;
+  height: 300px;
+}
+.CodeMirror-scroll {
+  /* Set scrolling behaviour here */
+  overflow: auto;
+}
+
+/* PADDING */
+
+.CodeMirror-lines {
+  padding: 4px 0; /* Vertical padding around content */
+}
+.CodeMirror pre {
+  padding: 0 4px; /* Horizontal padding of content */
+}
+
+.CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
+  background-color: white; /* The little square between H and V scrollbars */
+}
+
+/* GUTTER */
+
+.CodeMirror-gutters {
+  border-right: 1px solid #ddd;
+  background-color: #f7f7f7;
+  white-space: nowrap;
+}
+.CodeMirror-linenumbers {}
+.CodeMirror-linenumber {
+  padding: 0 3px 0 5px;
+  min-width: 20px;
+  text-align: right;
+  color: #999;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+}
+
+/* CURSOR */
+
+.CodeMirror div.CodeMirror-cursor {
+  border-left: 1px solid black;
+}
+/* Shown when moving in bi-directional text */
+.CodeMirror div.CodeMirror-secondarycursor {
+  border-left: 1px solid silver;
+}
+.CodeMirror.cm-keymap-fat-cursor div.CodeMirror-cursor {
+  width: auto;
+  border: 0;
+  background: #7e7;
+}
+/* Can style cursor different in overwrite (non-insert) mode */
+div.CodeMirror-overwrite div.CodeMirror-cursor {}
+
+.cm-tab { display: inline-block; }
+
+.CodeMirror-ruler {
+  border-left: 1px solid #ccc;
+  position: absolute;
+}
+
+/* DEFAULT THEME */
+
+.cm-s-default .cm-keyword {color: #708;}
+.cm-s-default .cm-atom {color: #219;}
+.cm-s-default .cm-number {color: #164;}
+.cm-s-default .cm-def {color: #00f;}
+.cm-s-default .cm-variable,
+.cm-s-default .cm-punctuation,
+.cm-s-default .cm-property,
+.cm-s-default .cm-operator {}
+.cm-s-default .cm-variable-2 {color: #05a;}
+.cm-s-default .cm-variable-3 {color: #085;}
+.cm-s-default .cm-comment {color: #a50;}
+.cm-s-default .cm-string {color: #a11;}
+.cm-s-default .cm-string-2 {color: #f50;}
+.cm-s-default .cm-meta {color: #555;}
+.cm-s-default .cm-qualifier {color: #555;}
+.cm-s-default .cm-builtin {color: #30a;}
+.cm-s-default .cm-bracket {color: #997;}
+.cm-s-default .cm-tag {color: #170;}
+.cm-s-default .cm-attribute {color: #00c;}
+.cm-s-default .cm-header {color: blue;}
+.cm-s-default .cm-quote {color: #090;}
+.cm-s-default .cm-hr {color: #999;}
+.cm-s-default .cm-link {color: #00c;}
+
+.cm-negative {color: #d44;}
+.cm-positive {color: #292;}
+.cm-header, .cm-strong {font-weight: bold;}
+.cm-em {font-style: italic;}
+.cm-link {text-decoration: underline;}
+
+.cm-s-default .cm-error {color: #f00;}
+.cm-invalidchar {color: #f00;}
+
+div.CodeMirror span.CodeMirror-matchingbracket {color: #0f0;}
+div.CodeMirror span.CodeMirror-nonmatchingbracket {color: #f22;}
+.CodeMirror-activeline-background {background: #e8f2ff;}
+
+/* STOP */
+
+/* The rest of this file contains styles related to the mechanics of
+   the editor. You probably shouldn't touch them. */
+
+.CodeMirror {
+  line-height: 1;
+  position: relative;
+  overflow: hidden;
+  background: white;
+  color: black;
+}
+
+.CodeMirror-scroll {
+  /* 30px is the magic margin used to hide the element's real scrollbars */
+  /* See overflow: hidden in .CodeMirror */
+  margin-bottom: -30px; margin-right: -30px;
+  padding-bottom: 30px;
+  height: 100%;
+  outline: none; /* Prevent dragging from highlighting the element */
+  position: relative;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+}
+.CodeMirror-sizer {
+  position: relative;
+  border-right: 30px solid transparent;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+}
+
+/* The fake, visible scrollbars. Used to force redraw during scrolling
+   before actuall scrolling happens, thus preventing shaking and
+   flickering artifacts. */
+.CodeMirror-vscrollbar, .CodeMirror-hscrollbar, .CodeMirror-scrollbar-filler, .CodeMirror-gutter-filler {
+  position: absolute;
+  z-index: 6;
+  display: none;
+}
+.CodeMirror-vscrollbar {
+  right: 0; top: 0;
+  overflow-x: hidden;
+  overflow-y: scroll;
+}
+.CodeMirror-hscrollbar {
+  bottom: 0; left: 0;
+  overflow-y: hidden;
+  overflow-x: scroll;
+}
+.CodeMirror-scrollbar-filler {
+  right: 0; bottom: 0;
+}
+.CodeMirror-gutter-filler {
+  left: 0; bottom: 0;
+}
+
+.CodeMirror-gutters {
+  position: absolute; left: 0; top: 0;
+  padding-bottom: 30px;
+  z-index: 3;
+}
+.CodeMirror-gutter {
+  white-space: normal;
+  height: 100%;
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+  padding-bottom: 30px;
+  margin-bottom: -32px;
+  display: inline-block;
+  /* Hack to make IE7 behave */
+  *zoom:1;
+  *display:inline;
+}
+.CodeMirror-gutter-elt {
+  position: absolute;
+  cursor: default;
+  z-index: 4;
+}
+
+.CodeMirror-lines {
+  cursor: text;
+}
+.CodeMirror pre {
+  /* Reset some styles that the rest of the page might have set */
+  -moz-border-radius: 0; -webkit-border-radius: 0; border-radius: 0;
+  border-width: 0;
+  background: transparent;
+  font-family: inherit;
+  font-size: inherit;
+  margin: 0;
+  white-space: pre;
+  word-wrap: normal;
+  line-height: inherit;
+  color: inherit;
+  z-index: 2;
+  position: relative;
+  overflow: visible;
+}
+.CodeMirror-wrap pre {
+  word-wrap: break-word;
+  white-space: pre-wrap;
+  word-break: normal;
+}
+
+.CodeMirror-linebackground {
+  position: absolute;
+  left: 0; right: 0; top: 0; bottom: 0;
+  z-index: 0;
+}
+
+.CodeMirror-linewidget {
+  position: relative;
+  z-index: 2;
+  overflow: auto;
+}
+
+.CodeMirror-widget {}
+
+.CodeMirror-wrap .CodeMirror-scroll {
+  overflow-x: hidden;
+}
+
+.CodeMirror-measure {
+  position: absolute;
+  width: 100%;
+  height: 0;
+  overflow: hidden;
+  visibility: hidden;
+}
+.CodeMirror-measure pre { position: static; }
+
+.CodeMirror div.CodeMirror-cursor {
+  position: absolute;
+  border-right: none;
+  width: 0;
+}
+
+div.CodeMirror-cursors {
+  visibility: hidden;
+  position: relative;
+  z-index: 1;
+}
+.CodeMirror-focused div.CodeMirror-cursors {
+  visibility: visible;
+}
+
+.CodeMirror-selected { background: #d9d9d9; }
+.CodeMirror-focused .CodeMirror-selected { background: #d7d4f0; }
+.CodeMirror-crosshair { cursor: crosshair; }
+
+.cm-searching {
+  background: #ffa;
+  background: rgba(255, 255, 0, .4);
+}
+
+/* IE7 hack to prevent it from returning funny offsetTops on the spans */
+.CodeMirror span { *vertical-align: text-bottom; }
+
+/* Used to force a border model for a node */
+.cm-force-border { padding-right: .1px; }
+
+@media print {
+  /* Hide the cursor when printing */
+  .CodeMirror div.CodeMirror-cursors {
+    visibility: hidden;
+  }
+}
diff --git a/v3/css/composingprograms.css b/v3/css/composingprograms.css
new file mode 100644
index 000000000..2ece81988
--- /dev/null
+++ b/v3/css/composingprograms.css
@@ -0,0 +1,25 @@
+/*  custom CSS for ../composingprograms.html
+
+    always include this file AFTER pytutor.css
+*/
+
+div.ExecutionVisualizer table#pyCodeOutput {
+  font-size:11pt;
+  white-space: nowrap;
+}
+
+div.ExecutionVisualizer div.stackFrame,
+div.ExecutionVisualizer div.zombieStackFrame {
+  white-space: nowrap;
+}
+
+div.ExecutionVisualizer div.zombieStackFrame {
+  color: #808080;
+}
+
+/* make the left bars thicker and darker */
+div.ExecutionVisualizer div.stackFrame,
+div.ExecutionVisualizer div.highlightedStackFrame {
+  border-left: 2px solid #686f70;
+}
+
diff --git a/v3/css/holistic.css b/v3/css/holistic.css
new file mode 100644
index 000000000..6dbf6e786
--- /dev/null
+++ b/v3/css/holistic.css
@@ -0,0 +1,181 @@
+/* Created by Irene Chen (2013) */
+div.HolisticVisualizer div#debug::-webkit-scrollbar {
+    width:9px;
+}
+
+div.HolisticVisualizer div#debug::-webkit-scrollbar-track {
+    -webkit-border-radius:5px;
+    border-radius:5px;
+    background:rgba(0,0,0,0.1);
+}
+
+div.HolisticVisualizer div#debug::-webkit-scrollbar-thumb {
+    -webkit-border-radius:5px;
+    border-radius:5px;
+    background:rgba(0,0,0,0.2);
+}
+
+div.HolisticVisualizer div#debug::-webkit-scrollbar-thumb:hover {
+    background:rgba(0,0,0,0.4);
+}
+
+div.HolisticVisualizer div#debug::-webkit-scrollbar-thumb:window-inactive {
+    background:rgba(0,0,0,0.05);
+}
+
+div.HolisticVisualizer {
+	font-family: "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;
+	font-size: 16px;
+}
+
+div.HolisticVisualizer pre {
+	margin: 0;
+}
+
+div.HolisticVisualizer div.control {
+	border :1px solid black;
+	border-radius: 5px;
+	display: block;
+	height: 100px;
+	margin-bottom: 10px;
+	margin-left: 10px;
+	padding: 5px;
+	width: 240px;
+}
+
+div.HolisticVisualizer #wrapper {
+	width: 100%;
+}
+
+div.HolisticVisualizer #left {
+    float: left;
+    overflow-x: scroll;
+    overflow-y: hidden;
+    width: 500px;
+}
+
+div.HolisticVisualizer #right {
+    width: 100%;
+    vertical-align: top;
+}
+
+div.HolisticVisualizer #padder {
+    padding-left: 502px;
+}
+
+div.HolisticVisualizer table#code {
+	border-collapse: collapse;
+	font-family: Courier, monospace;
+	font-size: 11pt;
+	margin: 1px auto;
+	vertical-align: top;
+}
+
+div.HolisticVisualizer #code tr, div.HolisticVisualizer #code td {
+	border-width: 0px;
+	text-overflow:ellipsis;
+    -ms-text-overflow:ellipsis;
+	padding: 0px;
+}
+
+div.HolisticVisualizer #code td.v-hover {
+	background-color: #b0e0e6;
+}
+
+div.HolisticVisualizer div#slider {
+  	border: 1px solid gray;
+  	display: inline-block;
+  	height: 100%;
+  	overflow-x: scroll;
+  	vertical-align: top;
+	width: 100%;
+}
+
+div.HolisticVisualizer div#debugPanel {
+  	display: inline-block;
+  	font-size: 10pt;
+  	height: 400px;
+  	vertical-align: top;
+  	width: 400px;
+}
+
+div.HolisticVisualizer div#debug {
+	height: 90%;
+	overflow: -moz-scrollbars-vertical;
+    overflow-y: scroll;
+}
+
+#altContainer {
+  display: none;
+}
+
+#altVisual {
+}
+
+#holisticTooltip {
+    -webkit-border-radius: 10px;
+    -moz-border-radius: 10px;
+    -webkit-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
+    -moz-box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
+	background-color: white;
+	border-radius: 10px;
+	box-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
+	display: none;
+    height: auto;
+    padding: 10px;
+    pointer-events: none;
+    position: absolute;
+    width: auto;
+}
+
+#holisticTooltip.hidden {
+    display: none;
+}
+
+#holisticTooltip p {
+    margin: 0;
+    font-family: sans-serif;
+    font-size: 16px;
+    line-height: 20px;
+}
+
+div.HolisticVisualizer path {
+	fill: none;
+	stroke: steelblue;
+	stroke-width: 1;
+}
+
+div.HolisticVisualizer .delimiter {
+ 	stroke: black;
+ 	stroke-opacity: 0.8;
+ 	stroke-width: 1px;
+}
+
+div.HolisticVisualizer .h-hover {
+	fill-opacity: 0;
+ 	stroke: black;
+ 	stroke-opacity: 0;
+ 	stroke-width: 20px;
+}
+
+div.HolisticVisualizer .v-hover {
+	fill-opacity: 0;
+}
+
+div.HolisticVisualizer .v-guide, div.HolisticVisualizer .h-guide {
+ 	stroke: black;
+ 	stroke-opacity: 0.4;
+ 	stroke-width: 1px;
+}
+
+div.HolisticVisualizer .axis path,
+div.HolisticVisualizer .axis line {
+    fill: none;
+    stroke: black;
+    shape-rendering: crispEdges;
+}
+
+div.HolisticVisualizer .axis text {
+    font-family: sans-serif;
+    font-size: 11px;
+}
diff --git a/v3/css/index.css b/v3/css/index.css
new file mode 100644
index 000000000..64913aac2
--- /dev/null
+++ b/v3/css/index.css
@@ -0,0 +1,201 @@
+/* CSS accompanying ../index.html */
+
+body {
+  background-color: white;
+
+  font-family: Georgia, Palatino, Times, serif;
+
+  font-size: 12pt;
+
+  /* use fixed width for simplicity */
+  max-width: 900px;
+  min-width: 900px;
+  width: 900px;
+
+  margin-left: auto;
+  margin-right: auto;
+}
+
+/* for prose text only */
+p, li {
+  line-height: 1.5;
+}
+
+h1 {
+  font-weight: normal;
+  margin-top: 0px;
+  margin-bottom: 8px;
+  line-height: 1.5;
+}
+
+.smallH1 {
+  font-size: 14pt;
+  margin-left: -2px;
+}
+
+#optLink {
+  font-size: 14pt;
+  text-decoration: none;
+  color: #3D58A2;
+  font-weight: bold;
+}
+
+#optLink:hover {
+  color: #3D58A2;
+  text-decoration: underline;
+}
+
+.titlePane {
+  margin-left: auto;
+  margin-right: auto;
+  margin-bottom: 0px;
+  text-align: center;
+}
+
+.titlePane h1 {
+  font-size: 22pt;
+  margin-bottom: 5px;
+}
+
+div.mainBodyPane {
+  margin-left: auto;
+  margin-right: auto;
+}
+
+div.activityPane {
+  /* TOP RIGHT BOTTOM LEFT */
+  padding: 15px 0px /* make right padding ZERO and just right-pad 'p' */ 5px 20px;
+  text-align: left;
+  border: 3px solid #005583;
+}
+
+div.activityPane p {
+  padding-right: 30px;
+}
+
+div.activityPane h1 {
+  font-size: 22pt;
+  margin-bottom: 20pt;
+}
+
+
+ul {
+  padding-left: 18px;
+}
+
+li {
+  margin-bottom: 12px;
+  font-size: 10pt;
+}
+
+a,
+a:visited,
+a:hover {
+  color: #3D58A2;
+}
+
+#learnHeading, #embedHeading, #shareHeading {
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-weight: bold;
+  font-size: 24pt;
+}
+
+#learnHeading {
+  color: #062270;
+}
+
+div#learnPane {
+  margin-top: 6pt;
+  margin-bottom: 8pt;
+  border: 5px solid #062270;
+}
+
+div#learnPane p {
+  padding-right: 100px;
+}
+
+div#learnPane #startLink {
+  font-size: 16pt;
+  font-weight: normal;
+  margin-top: 20px;
+  margin-bottom: 25px;
+  font-family: verdana, arial, helvetica, sans-serif;
+}
+
+div#learnPane #startLink a {
+  border-bottom-style: solid;
+  border-bottom-width: 2px;
+  text-decoration: none;
+}
+
+tt {
+  /*font-size: 85%;*/
+}
+
+div#embedPane {
+  margin-right: 5px;
+  border: 5px solid #5a7973;
+}
+
+
+#embedHeading {
+  color: #5a7973;
+}
+
+div#sharePane {
+  margin-left: 5px;
+  border: 5px solid #4284d3;
+}
+
+#shareHeading {
+  color: #4284d3;
+}
+
+div#detailsPane {
+  margin-top: 0px;
+  margin-left: 5px;
+  border: 0px; /* NO BORDER! */
+}
+
+#partnershipDiv {
+  /*background-color: #d8e1e3;*/
+  background-color: #d9cdb6;
+  width: 60%;
+  padding: 8px;
+  margin-left: auto;
+  margin-right: auto;
+  text-align: center;
+
+  font-size: 10pt;
+  font-family: Monaco, arial, sans-serif;
+}
+
+table.layoutTbl {
+  border: 0px;
+  max-width: 900px;
+}
+
+table.layoutTbl td#embedPaneTd {
+  width: 60%;
+  vertical-align: top;
+}
+
+table.layoutTbl td#sharePaneTd {
+  width: 40%;
+  vertical-align: top;
+}
+
+
+#footer {
+  color: #666666;
+  font-size: 9pt;
+  border-top: 1px solid #bbbbbb;
+  padding-top: 0px;
+  margin-top: 20px;
+
+  /* center align */
+  margin-left: auto;
+  margin-right: auto;
+
+  font-family: verdana, arial, helvetica, sans-serif;
+}
diff --git a/v3/css/jquery.qtip.css b/v3/css/jquery.qtip.css
new file mode 100644
index 000000000..fb7fe24b6
--- /dev/null
+++ b/v3/css/jquery.qtip.css
@@ -0,0 +1,573 @@
+/*! qTip2 - Pretty powerful tooltips - v2.0.0 - 2012-09-10
+* http://craigsworks.com/projects/qtip2/
+* Copyright (c) 2012 Craig Michael Thompson; Licensed MIT, GPL */
+
+/* Fluid class for determining actual width in IE */
+#qtip-rcontainer{
+	position: absolute;
+	left: -28000px;
+	top: -28000px;
+	display: block;
+	visibility: hidden;
+}
+
+	/* Fluid class for determining actual width in IE */
+	#qtip-rcontainer .ui-tooltip{
+		display: block !important;
+		visibility: hidden !important;
+		position: static !important;
+		float: left !important;
+	}
+
+/* Core qTip styles */
+.ui-tooltip, .qtip{
+	position: absolute;
+	left: -28000px;
+	top: -28000px;
+	display: none;
+
+	max-width: 280px;
+	min-width: 50px;
+	
+	font-size: 10.5px;
+	line-height: 12px;
+}
+
+	.ui-tooltip-content{
+		position: relative;
+		padding: 5px 9px;
+		overflow: hidden;
+
+		text-align: left;
+		word-wrap: break-word;
+	}
+
+	.ui-tooltip-titlebar{
+		position: relative;
+		min-height: 14px;
+		padding: 5px 35px 5px 10px;
+		overflow: hidden;
+
+		border-width: 0 0 1px;
+		font-weight: bold;
+	}
+
+	.ui-tooltip-titlebar + .ui-tooltip-content{ border-top-width: 0 !important; }
+
+		/* Default close button class */
+		.ui-tooltip-titlebar .ui-state-default{
+			position: absolute;
+			right: 4px;
+			top: 50%;
+			margin-top: -9px;
+
+			cursor: pointer;
+			outline: medium none;
+
+			border-width: 1px;
+			border-style: solid;
+		}
+		
+		* html .ui-tooltip-titlebar .ui-state-default{ top: 16px; } /* IE fix */
+
+		.ui-tooltip-titlebar .ui-icon,
+		.ui-tooltip-icon .ui-icon{
+			display: block;
+			text-indent: -1000em;
+			direction: ltr;
+		}
+
+		.ui-tooltip-icon, .ui-tooltip-icon .ui-icon{
+			-moz-border-radius: 3px;
+			-webkit-border-radius: 3px;
+			border-radius: 3px;
+			text-decoration: none;
+		}
+
+			.ui-tooltip-icon .ui-icon{
+				width: 18px;
+				height: 14px;
+
+				text-align: center;
+				text-indent: 0;
+				font: normal bold 10px/13px Tahoma,sans-serif;
+
+				color: inherit;
+				background: transparent none no-repeat -100em -100em;
+			}
+
+
+/* Applied to 'focused' tooltips e.g. most recently displayed/interacted with */
+.ui-tooltip-focus{}
+
+/* Applied on hover of tooltips i.e. added/removed on mouseenter/mouseleave respectively */
+.ui-tooltip-hover{}
+
+/* Default tooltip style */
+.ui-tooltip-default{
+	border-width: 1px;
+	border-style: solid;
+	border-color: #F1D031;
+
+	background-color: #FFFFA3;
+	color: #555;
+}
+
+	.ui-tooltip-default .ui-tooltip-titlebar{
+		background-color: #FFEF93;
+	}
+
+	.ui-tooltip-default .ui-tooltip-icon{
+		border-color: #CCC;
+		background: #F1F1F1;
+		color: #777;
+	}
+	
+	.ui-tooltip-default .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #AAA;
+		color: #111;
+	}
+
+
+/*! Light tooltip style */
+.ui-tooltip-light{
+	background-color: white;
+	border-color: #E2E2E2;
+	color: #454545;
+}
+
+	.ui-tooltip-light .ui-tooltip-titlebar{
+		background-color: #f1f1f1;
+	}
+
+
+/*! Dark tooltip style */
+.ui-tooltip-dark{
+	background-color: #505050;
+	border-color: #303030;
+	color: #f3f3f3;
+}
+
+	.ui-tooltip-dark .ui-tooltip-titlebar{
+		background-color: #404040;
+	}
+
+	.ui-tooltip-dark .ui-tooltip-icon{
+		border-color: #444;
+	}
+
+	.ui-tooltip-dark .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #303030;
+	}
+
+
+/*! Cream tooltip style */
+.ui-tooltip-cream{
+	background-color: #FBF7AA;
+	border-color: #F9E98E;
+	color: #A27D35;
+}
+
+	.ui-tooltip-cream .ui-tooltip-titlebar{
+		background-color: #F0DE7D;
+	}
+
+	.ui-tooltip-cream .ui-state-default .ui-tooltip-icon{
+		background-position: -82px 0;
+	}
+
+
+/*! Red tooltip style */
+.ui-tooltip-red{
+	background-color: #F78B83;
+	border-color: #D95252;
+	color: #912323;
+}
+
+	.ui-tooltip-red .ui-tooltip-titlebar{
+		background-color: #F06D65;
+	}
+
+	.ui-tooltip-red .ui-state-default .ui-tooltip-icon{
+		background-position: -102px 0;
+	}
+
+	.ui-tooltip-red .ui-tooltip-icon{
+		border-color: #D95252;
+	}
+
+	.ui-tooltip-red .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #D95252;
+	}
+
+
+/*! Green tooltip style */
+.ui-tooltip-green{
+	background-color: #CAED9E;
+	border-color: #90D93F;
+	color: #3F6219;
+}
+
+	.ui-tooltip-green .ui-tooltip-titlebar{
+		background-color: #B0DE78;
+	}
+
+	.ui-tooltip-green .ui-state-default .ui-tooltip-icon{
+		background-position: -42px 0;
+	}
+
+
+/*! Blue tooltip style */
+.ui-tooltip-blue{
+	background-color: #E5F6FE;
+	border-color: #ADD9ED;
+	color: #5E99BD;
+}
+
+	.ui-tooltip-blue .ui-tooltip-titlebar{
+		background-color: #D0E9F5;
+	}
+
+	.ui-tooltip-blue .ui-state-default .ui-tooltip-icon{
+		background-position: -2px 0;
+	}
+
+
+/* Add shadows to your tooltips in: FF3+, Chrome 2+, Opera 10.6+, IE9+, Safari 2+ */
+.ui-tooltip-shadow{
+	-webkit-box-shadow: 1px 1px 3px 1px rgba(0, 0, 0, 0.15);
+	-moz-box-shadow: 1px 1px 3px 1px rgba(0, 0, 0, 0.15);
+	box-shadow: 1px 1px 3px 1px rgba(0, 0, 0, 0.15);
+}
+
+/* Add rounded corners to your tooltips in: FF3+, Chrome 2+, Opera 10.6+, IE9+, Safari 2+ */
+.ui-tooltip-rounded,
+.ui-tooltip-tipsy,
+.ui-tooltip-bootstrap{
+	-moz-border-radius: 5px;
+	-webkit-border-radius: 5px;
+	border-radius: 5px;
+}
+
+/* Youtube tooltip style */
+.ui-tooltip-youtube{
+	-moz-border-radius: 2px;
+	-webkit-border-radius: 2px;
+	border-radius: 2px;
+	
+	-webkit-box-shadow: 0 0 3px #333;
+	-moz-box-shadow: 0 0 3px #333;
+	box-shadow: 0 0 3px #333;
+
+	color: white;
+	border-width: 0;
+
+	background: #4A4A4A;
+	background-image: -webkit-gradient(linear,left top,left bottom,color-stop(0,#4A4A4A),color-stop(100%,black));
+	background-image: -webkit-linear-gradient(top,#4A4A4A 0,black 100%);
+	background-image: -moz-linear-gradient(top,#4A4A4A 0,black 100%);
+	background-image: -ms-linear-gradient(top,#4A4A4A 0,black 100%);
+	background-image: -o-linear-gradient(top,#4A4A4A 0,black 100%);
+}
+
+	.ui-tooltip-youtube .ui-tooltip-titlebar{
+		background-color: #4A4A4A;
+		background-color: rgba(0,0,0,0);
+	}
+	
+	.ui-tooltip-youtube .ui-tooltip-content{
+		padding: .75em;
+		font: 12px arial,sans-serif;
+		
+		filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#4a4a4a,EndColorStr=#000000);
+		-ms-filter: "progid:DXImageTransform.Microsoft.Gradient(GradientType=0,StartColorStr=#4a4a4a,EndColorStr=#000000);";
+	}
+
+	.ui-tooltip-youtube .ui-tooltip-icon{
+		border-color: #222;
+	}
+
+	.ui-tooltip-youtube .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #303030;
+	}
+
+
+/* jQuery TOOLS Tooltip style */
+.ui-tooltip-jtools{
+	background: #232323;
+	background: rgba(0, 0, 0, 0.7);
+	background-image: -webkit-gradient(linear, left top, left bottom, from(#717171), to(#232323));
+	background-image: -moz-linear-gradient(top, #717171, #232323);
+	background-image: -webkit-linear-gradient(top, #717171, #232323);
+	background-image: -ms-linear-gradient(top, #717171, #232323);
+	background-image: -o-linear-gradient(top, #717171, #232323);
+
+	border: 2px solid #ddd;
+	border: 2px solid rgba(241,241,241,1);
+
+	-moz-border-radius: 2px;
+	-webkit-border-radius: 2px;
+	border-radius: 2px;
+
+	-webkit-box-shadow: 0 0 12px #333;
+	-moz-box-shadow: 0 0 12px #333;
+	box-shadow: 0 0 12px #333;
+}
+
+	/* IE Specific */
+	.ui-tooltip-jtools .ui-tooltip-titlebar{
+		background-color: transparent;
+		filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#717171,endColorstr=#4A4A4A);
+		-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#717171,endColorstr=#4A4A4A)";
+	}
+	.ui-tooltip-jtools .ui-tooltip-content{
+		filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#4A4A4A,endColorstr=#232323);
+		-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#4A4A4A,endColorstr=#232323)";
+	}
+
+	.ui-tooltip-jtools .ui-tooltip-titlebar,
+	.ui-tooltip-jtools .ui-tooltip-content{
+		background: transparent;
+		color: white;
+		border: 0 dashed transparent;
+	}
+
+	.ui-tooltip-jtools .ui-tooltip-icon{
+		border-color: #555;
+	}
+
+	.ui-tooltip-jtools .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #333;
+	}
+
+
+/* Cluetip style */
+.ui-tooltip-cluetip{
+	-webkit-box-shadow: 4px 4px 5px rgba(0, 0, 0, 0.4);
+	-moz-box-shadow: 4px 4px 5px rgba(0, 0, 0, 0.4);
+	box-shadow: 4px 4px 5px rgba(0, 0, 0, 0.4);
+
+	background-color: #D9D9C2;
+	color: #111;
+	border: 0 dashed transparent;
+}
+
+	.ui-tooltip-cluetip .ui-tooltip-titlebar{
+		background-color: #87876A;
+		color: white;
+		border: 0 dashed transparent;
+	}
+	
+	.ui-tooltip-cluetip .ui-tooltip-icon{
+		border-color: #808064;
+	}
+	
+	.ui-tooltip-cluetip .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #696952;
+		color: #696952;
+	}
+
+
+/* Tipsy style */
+.ui-tooltip-tipsy{
+	background: black;
+	background: rgba(0, 0, 0, .87);
+
+	color: white;
+	border: 0 solid transparent;
+
+	font-size: 11px;
+	font-family: 'Lucida Grande', sans-serif;
+	font-weight: bold;
+	line-height: 16px;
+	text-shadow: 0 1px black;
+}
+
+	.ui-tooltip-tipsy .ui-tooltip-titlebar{
+		padding: 6px 35px 0 10;
+		background-color: transparent;
+	}
+
+	.ui-tooltip-tipsy .ui-tooltip-content{
+		padding: 6px 10;
+	}
+	
+	.ui-tooltip-tipsy .ui-tooltip-icon{
+		border-color: #222;
+		text-shadow: none;
+	}
+
+	.ui-tooltip-tipsy .ui-tooltip-titlebar .ui-state-hover{
+		border-color: #303030;
+	}
+
+
+/* Tipped style */
+.ui-tooltip-tipped{
+	border: 3px solid #959FA9;
+
+	-moz-border-radius: 3px;
+	-webkit-border-radius: 3px;
+	border-radius: 3px;
+
+	background-color: #F9F9F9;
+	color: #454545;
+
+	font-weight: normal;
+	font-family: serif;
+}
+
+	.ui-tooltip-tipped .ui-tooltip-titlebar{
+		border-bottom-width: 0;
+
+		color: white;
+		background: #3A79B8;
+		background-image: -webkit-gradient(linear, left top, left bottom, from(#3A79B8), to(#2E629D));
+		background-image: -webkit-linear-gradient(top, #3A79B8, #2E629D);
+		background-image: -moz-linear-gradient(top, #3A79B8, #2E629D);
+		background-image: -ms-linear-gradient(top, #3A79B8, #2E629D);
+		background-image: -o-linear-gradient(top, #3A79B8, #2E629D);
+		filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#3A79B8,endColorstr=#2E629D);
+		-ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr=#3A79B8,endColorstr=#2E629D)";
+	}
+
+	.ui-tooltip-tipped .ui-tooltip-icon{
+		border: 2px solid #285589;
+		background: #285589;
+	}
+
+		.ui-tooltip-tipped .ui-tooltip-icon .ui-icon{
+			background-color: #FBFBFB;
+			color: #555;
+		}
+
+
+/**
+ * Twitter Bootstrap style.
+ *
+ * Tested with IE 8, IE 9, Chrome 18, Firefox 9, Opera 11.
+ * Does not work with IE 7.
+ */
+.ui-tooltip-bootstrap{
+	font-size: 13px;
+	line-height: 18px;
+
+	color: #333333;
+	background-color: #ffffff;
+
+
+	border: 1px solid #ccc;
+	border: 1px solid rgba(0, 0, 0, 0.2);
+
+	*border-right-width: 2px;
+	*border-bottom-width: 2px;
+
+	-webkit-border-radius: 5px;
+	-moz-border-radius: 5px;
+	border-radius: 5px;
+
+	-webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+	-moz-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+
+	-webkit-background-clip: padding-box;
+	-moz-background-clip: padding;
+	background-clip: padding-box;
+}
+
+	.ui-tooltip-bootstrap .ui-tooltip-titlebar{
+		font-size: 18px;
+		line-height: 22px;
+
+		border-bottom: 1px solid #ccc;
+		background-color: transparent;
+	}
+
+		.ui-tooltip-bootstrap .ui-tooltip-titlebar .ui-state-default{
+			right: 9px; top: 49%;
+			border-style: none;
+		}
+
+	.ui-tooltip-bootstrap .ui-tooltip-icon{
+		background: white;
+	}
+
+		.ui-tooltip-bootstrap .ui-tooltip-icon .ui-icon{
+			width: auto;
+			height: auto;
+			float: right;
+			font-size: 20px;
+			font-weight: bold;
+			line-height: 18px;
+			color: #000000;
+			text-shadow: 0 1px 0 #ffffff;
+			opacity: 0.2;
+			filter: alpha(opacity=20);
+		}
+
+		.ui-tooltip-bootstrap .ui-tooltip-icon .ui-icon:hover{
+			color: #000000;
+			text-decoration: none;
+			cursor: pointer;
+			opacity: 0.4;
+			filter: alpha(opacity=40);
+		}
+
+
+/* IE9 fix - removes all filters */
+.ui-tooltip:not(.ie9haxors) div.ui-tooltip-content,
+.ui-tooltip:not(.ie9haxors) div.ui-tooltip-titlebar{
+	filter: none;
+	-ms-filter: none;
+}
+
+
+/* Tips plugin */
+.ui-tooltip .ui-tooltip-tip{
+	margin: 0 auto;
+	overflow: hidden;
+	z-index: 10;
+}
+
+	.ui-tooltip .ui-tooltip-tip,
+	.ui-tooltip .ui-tooltip-tip .qtip-vml{
+		position: absolute;
+		
+		line-height: 0.1px !important;
+		font-size: 0.1px !important;
+		color: #123456;
+
+		background: transparent;
+		border: 0 dashed transparent;
+	}
+	
+	.ui-tooltip .ui-tooltip-tip canvas{ top: 0; left: 0; }
+
+	.ui-tooltip .ui-tooltip-tip .qtip-vml{
+		behavior: url(#default#VML);
+		display: inline-block;
+		visibility: visible;
+	}
+/* Modal plugin */
+#qtip-overlay{
+	position: fixed;
+	left: -10000em;
+	top: -10000em;
+}
+
+	/* Applied to modals with show.modal.blur set to true */
+	#qtip-overlay.blurs{ cursor: pointer; }
+
+	/* Change opacity of overlay here */
+	#qtip-overlay div{
+		position: absolute;
+		left: 0; top: 0;
+		width: 100%; height: 100%;
+
+		background-color: black;
+
+		opacity: 0.7;
+		filter:alpha(opacity=70);
+		-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=70)";
+	}
+
diff --git a/v3/css/jquery.ui.chatbox.css b/v3/css/jquery.ui.chatbox.css
new file mode 100644
index 000000000..d0036250c
--- /dev/null
+++ b/v3/css/jquery.ui.chatbox.css
@@ -0,0 +1,63 @@
+/* original from http://reason.cs.illinois.edu/wenpu1/chatbox.html, modified by Philip Guo */
+/* style sheets */
+.ui-chatbox {
+    position: fixed;
+    bottom:0;
+    padding: 2px;
+    background:  #CCCCCC;
+    font-size: 10pt;
+}
+
+.ui-chatbox-titlebar {
+    padding: 3px;
+    height: 20px;
+    cursor: pointer;
+}
+
+.ui-chatbox-content {
+    padding: 0px;
+    margin: 0px;
+    border: 0px;
+}
+
+.ui-chatbox-log {
+    padding: 3px;
+    height: 250px;
+    overflow-y: auto;
+    overflow-x: hidden;
+    background: #FFFFFF !important;
+}
+
+.ui-chatbox-input {
+    padding: 3px;
+    border-top: 1px solid grey;
+    overflow: hidden;
+}
+
+.ui-chatbox-input-box {
+    margin: 5px;
+    border: 2px solid lightgrey;/* #6699FF */
+    padding: 2px;
+    height: 50px;
+    background: #FFFFFF !important;
+}
+
+.ui-chatbox-icon {
+    float: right;
+}
+
+.ui-chatbox-input-focus {
+    border-color: #6699FF;
+}
+
+.ui-chatbox-msg {
+    margin-top: 10px;
+    float: left;
+    clear: both;
+    /* Source: http://snipplr.com/view/10979/css-cross-browser-word-wrap */
+    white-space: pre-wrap;      /* CSS3 */
+    white-space: -moz-pre-wrap; /* Firefox */
+    white-space: -pre-wrap;     /* Opera <7 */
+    white-space: -o-pre-wrap;   /* Opera 7 */
+    word-wrap: break-word;      /* IE */
+}
diff --git a/v3/css/matrixtutor.css b/v3/css/matrixtutor.css
new file mode 100644
index 000000000..46e4957a7
--- /dev/null
+++ b/v3/css/matrixtutor.css
@@ -0,0 +1,21 @@
+/*  custom CSS for ../matrixtutor.html
+
+    always include this file AFTER pytutor.css
+*/
+
+#testInputPane {
+  margin-top: 5px;
+  font-size: 12pt;
+  border: 1px solid #ddd;
+}
+
+#gradingPane {
+  margin-top: 20px;
+  margin-bottom: 20px;
+
+  max-width: 700px;
+  /* center align */
+  margin-left: auto;
+  margin-right: auto;
+}
+
diff --git a/v3/css/opt-frontend.css b/v3/css/opt-frontend.css
new file mode 100644
index 000000000..20aa7a5e2
--- /dev/null
+++ b/v3/css/opt-frontend.css
@@ -0,0 +1,228 @@
+/* CSS accompanying ../visualize.html */
+
+h1 {
+  font-weight: normal;
+  font-size: 20pt;
+  font-family: georgia, serif;
+  line-height: 1em;  /* enforce single spacing so that Georgia works */
+
+  margin-top: 0px;
+  margin-bottom: 8px;
+}
+
+h2 {
+  font-size: 12pt;
+  font-weight: normal;
+  font-family: georgia, serif;
+  line-height: 1.1em; /* enforce single spacing so that Georgia works */
+
+  margin-top: 2px;
+  margin-bottom: 20px;
+}
+
+
+body {
+  background-color: white;
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-size: 10pt;
+}
+
+a,
+a:visited,
+a:hover {
+  color: #3D58A2;
+}
+
+span {
+  padding: 0px;
+}
+
+table#pyOutputPane {
+  padding: 10px;
+}
+
+#pyInputPane, #loadingPane {
+  margin-top: 10px;
+  margin-bottom: 20px;
+
+  max-width: 700px;
+  /* center align */
+  margin-left: auto;
+  margin-right: auto;
+}
+
+#loadingPane {
+  margin-bottom: 5px;
+}
+
+#codeInputPane {
+  margin-top: 5px;
+  font-size: 12pt;
+  border: 1px solid #ddd;
+}
+
+#codeInputWarnings {
+  margin-bottom: 8px;
+}
+
+button.smallBtn {
+  font-size: 10pt;
+  padding: 3px;
+}
+
+button.bigBtn {
+  font-size: 12pt;
+  padding: 6px;
+  margin-top: 0px;
+}
+
+button.surveyBtn {
+  font-size: 8pt;
+  margin-top: 8px;
+}
+
+#footer {
+  color: #888888;
+  font-size: 9pt;
+  border-top: 1px solid #bbbbbb;
+  padding-top: 5px;
+  margin-top: 5px;
+
+  max-width: 700px;
+  /* center align */
+  margin-left: auto;
+  margin-right: auto;
+}
+
+#frontendErrorOutput {
+  color: #e93f34; /* should match brightRed JavaScript variable */
+  font-size: 12pt;
+  line-height: 1.5em;
+  margin-top: 8px;
+}
+
+.togetherjsBtn {
+  color: #b80000;
+  font-size: 9pt;
+  padding: 4px;
+  margin-top: 3px;
+}
+
+#syncBtn {
+ font-size: 8pt;
+ margin-left: 10px;
+}
+
+#experimentalHeader {
+}
+
+#surveyHeader {
+  margin-left: 100px;
+}
+
+.surveyQ {
+  font-size: 9pt;
+  padding: 2px;
+}
+
+/* necessary for CodeMirror error line highlighting to work! */
+.CodeMirror .errorLine { background: #ffff3f !important; }
+
+
+/* from http://rog.ie/blog/css-star-rater */
+.star-rating {
+  font-size: 0;
+  white-space: nowrap;
+  display: inline-block;
+  /* pgbovine - scale this appropriately with a 5:1 ratio */
+  width: 100px;
+  height: 20px;
+  overflow: hidden;
+  position: relative;
+  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjREREREREIiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
+  background-size: contain;
+}
+.star-rating i {
+  opacity: 0;
+  position: absolute;
+  left: 0;
+  top: 0;
+  height: 100%;
+  width: 20%;
+  z-index: 1;
+  background: url('data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeG1sbnM6eGxpbms9Imh0dHA6Ly93d3cudzMub3JnLzE5OTkveGxpbmsiIHg9IjBweCIgeT0iMHB4IiB3aWR0aD0iMjBweCIgaGVpZ2h0PSIyMHB4IiB2aWV3Qm94PSIwIDAgMjAgMjAiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDIwIDIwIiB4bWw6c3BhY2U9InByZXNlcnZlIj48cG9seWdvbiBmaWxsPSIjRkZERjg4IiBwb2ludHM9IjEwLDAgMTMuMDksNi41ODMgMjAsNy42MzkgMTUsMTIuNzY0IDE2LjE4LDIwIDEwLDE2LjU4MyAzLjgyLDIwIDUsMTIuNzY0IDAsNy42MzkgNi45MSw2LjU4MyAiLz48L3N2Zz4=');
+  background-size: contain;
+}
+.star-rating input {
+  -moz-appearance: none;
+  -webkit-appearance: none;
+  opacity: 0;
+  display: inline-block;
+  width: 20%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  z-index: 2;
+  position: relative;
+}
+.star-rating input:hover + i,
+.star-rating input:checked + i {
+  opacity: 1;
+}
+.star-rating i ~ i {
+  width: 40%;
+}
+.star-rating i ~ i ~ i {
+  width: 60%;
+}
+.star-rating i ~ i ~ i ~ i {
+  width: 80%;
+}
+.star-rating i ~ i ~ i ~ i ~ i {
+  width: 100%;
+}
+
+
+#syntaxErrBubbleContents {
+  font-size: 9pt;
+  cursor: default;
+}
+
+#syntaxErrHeader {
+  margin-bottom: 3pt;
+}
+
+#syntaxErrCodeDisplay {
+  border: 1px solid #ddd;
+}
+
+#syntaxErrMsg {
+  color: #e93f34; /* should match brightRed JavaScript variable */
+  font-size: 10pt;
+  margin-top: 3pt;
+  margin-bottom: 2pt;
+}
+
+#syntaxErrQuestion {
+  margin-top: 12px;
+}
+
+#syntaxErrTxtInput {
+  margin-top: 3px;
+  margin-bottom: 6px;
+  padding: 2px;
+}
+
+#syntaxErrSubmitBtn, #syntaxErrCloseBtn {
+  margin-right: 8px;
+}
+
+#syntaxErrHideAllLink {
+  font-size: 8pt;
+}
+
+#testCasesPane {
+ margin-top: 5px;
+ padding-bottom: 10px;
+ border-bottom: 1px solid #ccc;
+}
diff --git a/v3/css/opt-lessons.css b/v3/css/opt-lessons.css
new file mode 100644
index 000000000..02c07e950
--- /dev/null
+++ b/v3/css/opt-lessons.css
@@ -0,0 +1,85 @@
+/* CSS accompanying ../lesson.html */
+
+body {
+  background-color: white;
+
+  font-family: verdana, arial, helvetica, sans-serif;
+
+  font-size: 10pt;
+
+  max-width: 900px;
+  /* center align */
+  margin-left: auto;
+  margin-right: auto;
+}
+
+div#lessonHeader {
+  margin-bottom: 15pt;
+  width: 800px;
+}
+
+div#lessonTitle {
+  font-size: 16pt;
+  margin-bottom: 15pt;
+}
+
+div#lessonDescription {
+  font-size: 11pt;
+  line-height: 1.5em;
+}
+
+div#lessonNarration {
+  font-size: 11pt;
+  min-height: 25px;
+  margin-bottom: 12px;
+  line-height: 1.5em;
+  width: 800px;
+}
+
+
+a,
+a:visited,
+a:hover {
+  color: #3D58A2;
+}
+
+span {
+  padding: 0px;
+}
+
+table#pyOutputPane {
+  padding: 10px;
+}
+
+#pyInputPane {
+  margin-top: 20px;
+  margin-bottom: 20px;
+
+  max-width: 700px;
+  /* center align */
+  margin-left: auto;
+  margin-right: auto;
+}
+
+#codeInputPane {
+  margin-top: 5px;
+  font-size: 12pt;
+}
+
+button.smallBtn {
+  font-size: 10pt;
+  padding: 3px;
+}
+
+button.bigBtn {
+  font-size: 12pt;
+  padding: 5px;
+}
+
+#footer {
+  color: #666;
+  font-size: 9pt;
+  border-top: 1px solid #bbb;
+  padding-top: 12px;
+  margin-top: 5px;
+}
diff --git a/v3/css/opt-testcases.css b/v3/css/opt-testcases.css
new file mode 100644
index 000000000..56abd54ba
--- /dev/null
+++ b/v3/css/opt-testcases.css
@@ -0,0 +1,25 @@
+.testCaseEditor {
+  width: 300px;
+  height: 90px; /* VERY IMPORTANT so that it works on I.E., ugh! */
+  border: 1px solid #ddd;
+}
+
+#testCasesTable thead td {
+  padding-bottom: 5px;
+  border-bottom: 1px solid #bbb;
+  text-align: center;
+}
+
+#testCasesTable td {
+  padding-top: 10px;
+  padding-right: 5px;
+  vertical-align: top;
+}
+
+#testCasesTable td.outputTd {
+  text-align: center;
+}
+
+#testCasesTable {
+  margin-bottom: 5px;
+}
diff --git a/v3/css/pytutor.css b/v3/css/pytutor.css
new file mode 100644
index 000000000..6d0b836c6
--- /dev/null
+++ b/v3/css/pytutor.css
@@ -0,0 +1,855 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+/* Most recent color scheme redesign on 2012-08-19 */
+
+/* To prevent CSS namespace clashes, prefix all rules with:
+     div.ExecutionVisualizer
+*/
+
+
+/* reset some styles to nullify effects of existing stylesheets
+   e.g., http://meyerweb.com/eric/tools/css/reset/
+*/
+div.ExecutionVisualizer {
+  /* none for now */
+}
+
+div.ExecutionVisualizer table.visualizer {
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-size: 10pt;
+  margin-bottom: 10px;
+}
+
+div.ExecutionVisualizer table.visualizer td.vizLayoutTd {
+  vertical-align: top;
+}
+
+div.ExecutionVisualizer td#stack_td,
+div.ExecutionVisualizer td#heap_td {
+  vertical-align:top;
+  font-size: 10pt; /* don't make fonts in the heap so big! */
+}
+
+div.ExecutionVisualizer #dataViz {
+  margin-left: 25px;
+}
+
+div.ExecutionVisualizer div#codeDisplayDiv {
+  /* set this as default unless user specifies a custom size */
+  width: 550px;
+}
+
+div.ExecutionVisualizer div#pyCodeOutputDiv {
+  /*max-width: 550px;*/
+  max-height: 460px;
+  /*max-height: 620px;*/
+  overflow: auto;
+  /*margin-bottom: 4px;*/
+
+  margin-left: auto;
+  margin-right: auto;
+}
+
+div.ExecutionVisualizer table#pyCodeOutput {
+  font-family: Andale mono, monospace;
+  /*font-size:12pt;*/
+  font-size:11pt;
+  line-height:1.1em;
+
+  border-collapse: separate; /* some crazy CSS voodoo that needs to be
+                                there so that SVG arrows to the left
+                                of the code line up vertically in Chrome */
+  border-spacing: 0px;
+  border-top: 1px solid #bbb;
+  padding-top: 3px;
+  border-bottom: 1px solid #bbb;
+  /*margin-top: 6px;*/
+  margin: 6px auto; /* Center code in its pane */
+}
+
+/* don't wrap lines within code output ... FORCE scrollbars to appear */
+div.ExecutionVisualizer table#pyCodeOutput td {
+  white-space: nowrap;
+  vertical-align: middle; /* explicitly force, to override external CSS conflicts */
+}
+
+div.ExecutionVisualizer #leftCodeGutterSVG {
+  width: 18px;
+  min-width: 18px; /* make sure it doesn't squash too thin */
+  height: 0px; /* programmatically set this later ... IE needs this to
+                  be 0 or it defaults to something arbitrary and gross */
+}
+
+div.ExecutionVisualizer #prevLegendArrowSVG,
+div.ExecutionVisualizer #curLegendArrowSVG {
+  width: 18px;
+  height: 10px;
+}
+
+div.ExecutionVisualizer .arrow {
+  font-size: 16pt;
+}
+
+div.ExecutionVisualizer table#pyCodeOutput .lineNo {
+  color: #aaa;
+  padding: 0.2em;
+  padding-left: 0.3em;
+  padding-right: 0.5em;
+  text-align: right;
+}
+
+div.ExecutionVisualizer table#pyCodeOutput .cod {
+  /*font-weight: bold;*/
+  margin-left: 3px;
+  padding-left: 7px;
+  text-align: left; /* necessary or else doesn't work properly in IE */
+}
+
+div.ExecutionVisualizer div#progOutputs {
+  margin-top: 8px;
+}
+
+div.ExecutionVisualizer div#legendDiv {
+  margin-top: 10px;
+  padding: 0px;
+  text-align: left;
+  color: #666;
+  font-size: 9pt;
+}
+
+div.ExecutionVisualizer div#editCodeLinkDiv {
+  text-align: center;
+  /*
+  margin-top: 12px;
+  margin-bottom: 4px;
+  */
+  margin: 8px auto;
+  font-size: 11pt;
+}
+
+div.ExecutionVisualizer div#annotateLinkDiv {
+  /*text-align: left;*/
+  margin-top: 0px;
+  margin-bottom: 12px;
+  /*
+  margin-left: auto;
+  margin-right: auto;
+  */
+}
+
+div.ExecutionVisualizer div#stepAnnotationDiv {
+  margin-bottom: 12px;
+}
+
+div.ExecutionVisualizer textarea#stepAnnotationEditor,
+div.ExecutionVisualizer textarea#vizTitleEditor,
+div.ExecutionVisualizer textarea#vizDescriptionEditor {
+  border: 1px solid #999999;
+  padding: 4px;
+
+  overflow: auto; /* to look pretty on IE */
+  /* make sure textarea doesn't grow and stretch */
+  resize: none;
+}
+
+
+div.ExecutionVisualizer #errorOutput {
+  color: #e93f34; /* should match brightRed JavaScript variable */
+  font-size: 12pt;
+  padding: 2px;
+  line-height: 1.5em;
+  margin-bottom: 4px;
+}
+
+/* VCR control buttons for stepping through execution */
+
+div.ExecutionVisualizer #vcrControls {
+  margin: 15px auto;
+  /*width: 100%;*/
+  text-align: center;
+}
+
+div.ExecutionVisualizer #vcrControls button {
+  margin-left: 2px;
+  margin-right: 2px;
+}
+
+div.ExecutionVisualizer #vcrControls #curInstr {
+  margin-left: 4px;
+  margin-right: 4px;
+}
+
+div.ExecutionVisualizer #pyStdout {
+  border: 1px solid #999999;
+  font-size: 12pt;
+  padding: 4px;
+  font-family: Andale mono, monospace;
+
+  overflow: auto; /* to look pretty on IE */
+  /* make sure textarea doesn't grow and stretch */
+  resize: none;
+}
+
+
+div.ExecutionVisualizer .vizFrame {
+  margin-bottom: 20px;
+  padding-left: 8px;
+  border-left: 2px solid #cccccc;
+}
+
+
+/* Rendering of primitive types */
+
+div.ExecutionVisualizer .nullObj {
+//  font-size: 8pt;
+}
+
+div.ExecutionVisualizer .stringObj,
+div.ExecutionVisualizer .customObj,
+div.ExecutionVisualizer .funcObj {
+  font-family: Andale mono, monospace;
+  white-space: nowrap;
+}
+
+div.ExecutionVisualizer .funcCode {
+  font-size: 8pt;
+}
+
+div.ExecutionVisualizer .retval {
+  font-size: 9pt;
+}
+
+div.ExecutionVisualizer .stackFrame .retval {
+  color: #e93f34; /* highlight non-zombie stack frame return values -
+                     should match brightRed JavaScript variable */
+}
+
+/* Rendering of basic compound types */
+
+div.ExecutionVisualizer table.listTbl,
+div.ExecutionVisualizer table.tupleTbl,
+div.ExecutionVisualizer table.setTbl {
+  background-color: #ffffc6;
+}
+
+
+div.ExecutionVisualizer table.listTbl {
+  border: 0px solid black;
+  border-spacing: 0px;
+}
+
+div.ExecutionVisualizer table.listTbl td.listHeader,
+div.ExecutionVisualizer table.tupleTbl td.tupleHeader {
+  padding-left: 4px;
+  padding-top: 2px;
+  padding-bottom: 3px;
+  font-size: 8pt;
+  color: #777;
+  text-align: left;
+  border-left: 1px solid #555555;
+}
+
+div.ExecutionVisualizer table.tupleTbl {
+  border-spacing: 0px;
+  color: black;
+
+  border-bottom: 1px solid #555555; /* must match td.tupleHeader border */
+  border-top: 1px solid #555555; /* must match td.tupleHeader border */
+  border-right: 1px solid #555555; /* must match td.tupleHeader border */
+}
+
+
+div.ExecutionVisualizer table.listTbl td.listElt {
+  border-bottom: 1px solid #555555; /* must match td.listHeader border */
+  border-left: 1px solid #555555; /* must match td.listHeader border */
+}
+
+div.ExecutionVisualizer table.tupleTbl td.tupleElt {
+  border-left: 1px solid #555555; /* must match td.tupleHeader border */
+}
+
+div.ExecutionVisualizer table.customObjTbl {
+  background-color: white;
+  color: black;
+  border: 1px solid black;
+}
+
+div.ExecutionVisualizer table.customObjTbl td.customObjElt {
+  padding: 5px;
+}
+
+div.ExecutionVisualizer table.listTbl td.listElt,
+div.ExecutionVisualizer table.tupleTbl td.tupleElt {
+  padding-top: 0px;
+  padding-bottom: 8px;
+  padding-left: 10px;
+  padding-right: 10px;
+  vertical-align: bottom;
+}
+
+div.ExecutionVisualizer table.setTbl {
+  border: 1px solid #555555;
+  border-spacing: 0px;
+  text-align: center;
+}
+
+div.ExecutionVisualizer table.setTbl td.setElt {
+  padding: 8px;
+}
+
+
+div.ExecutionVisualizer table.dictTbl,
+div.ExecutionVisualizer table.instTbl,
+div.ExecutionVisualizer table.classTbl {
+  border-spacing: 1px;
+}
+
+div.ExecutionVisualizer table.dictTbl td.dictKey,
+div.ExecutionVisualizer table.instTbl td.instKey,
+div.ExecutionVisualizer table.classTbl td.classKey {
+  background-color: #faebbf;
+}
+
+div.ExecutionVisualizer table.dictTbl td.dictVal,
+div.ExecutionVisualizer table.instTbl td.instVal,
+div.ExecutionVisualizer table.classTbl td.classVal,
+div.ExecutionVisualizer td.funcCod {
+  background-color: #ffffc6;
+}
+
+
+div.ExecutionVisualizer table.dictTbl td.dictKey,
+div.ExecutionVisualizer table.instTbl td.instKey,
+div.ExecutionVisualizer table.classTbl td.classKey {
+  padding-top: 6px /*15px*/;
+  padding-bottom: 6px;
+  padding-left: 10px;
+  padding-right: 4px;
+
+  text-align: right;
+}
+
+div.ExecutionVisualizer table.dictTbl td.dictVal,
+div.ExecutionVisualizer table.instTbl td.instVal,
+div.ExecutionVisualizer table.classTbl td.classVal {
+  padding-top: 6px; /*15px*/;
+  padding-bottom: 6px;
+  padding-right: 10px;
+  padding-left: 4px;
+}
+
+div.ExecutionVisualizer td.funcCod {
+  padding-left: 4px;
+}
+
+div.ExecutionVisualizer table.classTbl td,
+div.ExecutionVisualizer table.instTbl td {
+  border-bottom: 1px #888 solid;
+}
+
+div.ExecutionVisualizer table.classTbl td.classVal,
+div.ExecutionVisualizer table.instTbl td.instVal {
+  border-left: 1px #888 solid;
+}
+
+div.ExecutionVisualizer table.classTbl,
+div.ExecutionVisualizer table.funcTbl {
+  border-collapse: collapse;
+  border: 1px #888 solid;
+}
+
+/* only add a border to dicts if they're embedded within another object */
+div.ExecutionVisualizer td.listElt table.dictTbl,
+div.ExecutionVisualizer td.tupleElt table.dictTbl,
+div.ExecutionVisualizer td.dictVal table.dictTbl,
+div.ExecutionVisualizer td.instVal table.dictTbl,
+div.ExecutionVisualizer td.classVal table.dictTbl {
+  border: 1px #888 solid;
+}
+
+div.ExecutionVisualizer .objectIdLabel {
+  font-size: 8pt;
+  color: #444;
+  margin-bottom: 2px;
+}
+
+div.ExecutionVisualizer .typeLabel {
+  font-size: 8pt;
+  color: #555;
+  margin-bottom: 2px;
+}
+
+div.ExecutionVisualizer div#stack,
+div.ExecutionVisualizer div#globals_area {
+  padding-left: 10px;
+  padding-right: 30px;
+
+  /* no longer necessary ... */
+  /*float: left;*/
+  /* border-right: 1px dashed #bbbbbb; */
+}
+
+div.ExecutionVisualizer div.stackFrame,
+div.ExecutionVisualizer div.zombieStackFrame {
+  background-color: #ffffff;
+  margin-bottom: 15px;
+  padding: 2px;
+  padding-left: 6px;
+  padding-right: 6px;
+  padding-bottom: 4px;
+  font-size: 10pt;
+}
+
+div.ExecutionVisualizer div.zombieStackFrame {
+  border-left: 1px dotted #aaa;
+  /*color: #c0c0c0;*/
+  color: #a0a0a0;
+}
+
+div.ExecutionVisualizer div.highlightedStackFrame {
+  background-color: #e2ebf6;
+  /*background-color: #d7e7fb;*/
+
+  /*background-color: #c0daf8;*/
+  /*background-color: #9eeaff #c5dfea;*/
+}
+
+div.ExecutionVisualizer div.stackFrame,
+div.ExecutionVisualizer div.highlightedStackFrame {
+  border-left: 1px solid #a6b3b6;
+}
+
+
+div.ExecutionVisualizer div.stackFrameHeader {
+  font-family: Andale mono, monospace;
+  font-size: 10pt;
+  margin-top: 4px;
+  margin-bottom: 3px;
+  white-space: nowrap;
+}
+
+div.ExecutionVisualizer td.stackFrameVar {
+  text-align: right;
+  padding-right: 8px;
+  padding-top: 3px;
+  padding-bottom: 3px;
+}
+
+div.ExecutionVisualizer td.stackFrameValue {
+  text-align: left;
+  border-bottom: 1px solid #aaaaaa;
+  border-left: 1px solid #aaaaaa;
+
+  vertical-align: middle;
+
+  padding-top: 3px;
+  padding-left: 3px;
+  padding-bottom: 3px;
+}
+
+div.ExecutionVisualizer .stackFrameVarTable tr {
+
+}
+
+div.ExecutionVisualizer .stackFrameVarTable {
+  text-align: right;
+  padding-top: 3px;
+
+  /* right-align the table */
+  margin-left: auto;
+  margin-right: 0px;
+
+  /* hack to counteract possible nasty CSS reset styles from parent divs */
+  border-collapse: separate;
+  border-spacing: 2px;
+}
+
+div.ExecutionVisualizer div#heap {
+  float: left;
+  padding-left: 30px;
+}
+
+div.ExecutionVisualizer td.toplevelHeapObject {
+  /* needed for d3 to do transitions */
+  padding-left: 8px;
+  padding-right: 8px;
+  padding-top: 4px;
+  padding-bottom: 4px;
+  /*
+  border: 2px dotted white;
+  border-color: white;
+  */
+}
+
+div.ExecutionVisualizer table.heapRow {
+  margin-bottom: 10px;
+}
+
+div.ExecutionVisualizer div.heapObject {
+  padding-left: 2px; /* leave a TINY amount of room for connector endpoints */
+}
+
+div.ExecutionVisualizer div.heapPrimitive {
+  padding-left: 4px; /* leave some more room for connector endpoints */
+}
+
+div.ExecutionVisualizer div#stackHeader {
+  margin-bottom: 15px;
+  text-align: right;
+}
+
+div.ExecutionVisualizer div#heapHeader {
+  /*margin-top: 2px;
+  margin-bottom: 13px;*/
+  margin-bottom: 15px;
+}
+
+div.ExecutionVisualizer div#langDisplayDiv {
+  text-align: center;
+  margin-top: 2pt;
+  margin-bottom: 3pt;
+}
+
+div.ExecutionVisualizer div#langDisplayDiv,
+div.ExecutionVisualizer div#stackHeader,
+div.ExecutionVisualizer div#heapHeader {
+  color: #333333;
+  font-size: 10pt;
+}
+
+div.ExecutionVisualizer #executionSlider {
+  /* if you set 'width', then it looks ugly when you dynamically resize */
+  margin-top: 15px;
+  margin-bottom: 5px;
+
+  margin-left: auto;
+  margin-right: auto;
+
+  width: 95%;
+}
+
+div.ExecutionVisualizer #executionSliderCaption {
+  font-size: 8pt;
+  color: #666666;
+  margin-top: 15px;
+}
+
+div.ExecutionVisualizer #executionSliderFooter {
+  margin-top: -7px; /* make it butt up against #executionSlider */
+}
+
+
+/* darken slider handle a bit */
+div.ExecutionVisualizer .ui-slider .ui-slider-handle {
+  border: 1px solid #999;
+}
+
+
+/* for annotation bubbles */
+
+/* For styling tricks, see: http://css-tricks.com/textarea-tricks/ */
+textarea.bubbleInputText {
+  border: 1px solid #ccc;
+  outline: none;
+  overflow: auto; /* to look pretty on IE */
+
+  /* make sure textarea doesn't grow and stretch the enclosing bubble */
+  resize: none;
+  width: 225px;
+  max-width: 225px;
+  height: 35px;
+  max-height: 35px;
+}
+
+
+.ui-tooltip-pgbootstrap,
+textarea.bubbleInputText {
+  font-family: verdana, arial, helvetica, sans-serif;
+	font-size: 9pt;
+	line-height: 1.3em;
+}
+
+
+/* modified version of Twitter bootstrap style by Philip Guo */
+.ui-tooltip-pgbootstrap{
+	color: #333;
+	background-color: #ffffff;
+
+	max-width: 250px;
+	min-width: 10px;
+
+	border: 2px solid #4284D3;
+
+  cursor: pointer;
+
+	*border-right-width: 2px;
+	*border-bottom-width: 2px;
+
+	-webkit-border-radius: 5px;
+	-moz-border-radius: 5px;
+	border-radius: 5px;
+
+  /* way too poofy ...
+	-webkit-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+	-moz-box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+	box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
+  */
+
+	-webkit-box-shadow: 2px 2px 3px 0px rgba(0, 0, 0, 0.2);
+	-moz-box-shadow: 2px 2px 3px 0px rgba(0, 0, 0, 0.2);
+	box-shadow: 2px 2px 3px 0px rgba(0, 0, 0, 0.2);
+
+	-webkit-background-clip: padding-box;
+	-moz-background-clip: padding;
+	background-clip: padding-box;
+}
+
+	.ui-tooltip-pgbootstrap .ui-tooltip-titlebar{
+		font-size: 18px;
+		line-height: 22px;
+
+		border-bottom: 1px solid #ccc;
+		background-color: transparent;
+	}
+
+	.ui-tooltip-pgbootstrap .ui-tooltip-content{
+		padding: 5px /* 5px is minimum or else it might look ugly */ 8px;
+	}
+	
+
+		.ui-tooltip-pgbootstrap .ui-tooltip-titlebar .ui-state-default{
+			right: 9px; top: 49%;
+			border-style: none;
+		}
+
+	.ui-tooltip-pgbootstrap .ui-tooltip-icon{
+		background: white;
+	}
+
+		.ui-tooltip-pgbootstrap .ui-tooltip-icon .ui-icon{
+			width: auto;
+			height: auto;
+			float: right;
+			font-size: 20px;
+			font-weight: bold;
+			line-height: 18px;
+			color: #000000;
+			text-shadow: 0 1px 0 #ffffff;
+			opacity: 0.2;
+			filter: alpha(opacity=20);
+		}
+
+		.ui-tooltip-pgbootstrap .ui-tooltip-icon .ui-icon:hover{
+			color: #000000;
+			text-decoration: none;
+			cursor: pointer;
+			opacity: 0.4;
+			filter: alpha(opacity=40);
+		}
+
+
+/* Add rounded corners to your tooltips in: FF3+, Chrome 2+, Opera 10.6+, IE9+, Safari 2+ */
+.ui-tooltip-pgbootstrap{
+	-moz-border-radius: 5px;
+	-webkit-border-radius: 5px;
+	border-radius: 5px;
+}
+
+
+.ui-tooltip-pgbootstrap-stub{
+	border: 1px solid #999;
+
+  /*
+	-webkit-box-shadow: none;
+	-moz-box-shadow: none;
+	box-shadow: none;
+  */
+}
+
+.ui-tooltip-pgbootstrap-RED {
+	border: 1px solid #e93f34; /* should match brightRed JavaScript variable */
+
+}
+
+	.ui-tooltip-pgbootstrap-stub .ui-tooltip-content{
+		padding: 6px 9px;
+	}
+	
+
+div.ExecutionVisualizer .annotationText,
+div.ExecutionVisualizer .vizDescriptionText {
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-size: 11pt;
+  line-height: 1.5em;
+}
+
+div.ExecutionVisualizer .vizTitleText {
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-size: 16pt;
+  margin-bottom: 12pt;
+}
+
+div.ExecutionVisualizer div#vizHeader {
+  margin-bottom: 10px;
+  width: 700px;
+  max-width: 700px;
+}
+
+/* prev then curr, so curr gets precedence when both apply */
+div.ExecutionVisualizer .highlight-prev {
+  background-color: #F0F0EA;
+}
+
+div.ExecutionVisualizer .highlight-cur {
+  background-color: #FFFF66;
+}
+
+div.ExecutionVisualizer .highlight-legend {
+  padding: 2px;
+}
+
+/* resizing sliders from David Pritchard */
+.ui-resizable-e {
+  background-color: #dddddd;
+  width: 1px;
+  border: 3px solid white;
+}
+
+.ui-resizable-e:hover {
+  border-color: #dddddd;
+}
+
+div.ExecutionVisualizer div#rawUserInputDiv {
+  padding: 5px;
+  width: 95%;
+  margin: 5px auto;
+  text-align: center;
+  border: 1px #e93f34 solid;
+}
+
+/* for pyCrazyMode */
+
+/* prev then curr, so curr gets precedence when both apply */
+div.ExecutionVisualizer .pycrazy-highlight-prev {
+  background-color: #eeeeee; /*#F0F0EA;*/
+  /*
+  text-decoration: none;
+  border-bottom: 1px solid #dddddd;
+  */
+}
+
+div.ExecutionVisualizer .pycrazy-highlight-cur {
+  background-color: #FFFF66;
+  /* aligned slightly higher than border-bottom */
+  /*
+  text-decoration: none;
+  border-bottom: 1px solid #e93f34;
+  */
+}
+
+div.ExecutionVisualizer .pycrazy-highlight-prev-and-cur {
+  background-color: #FFFF66;
+
+  text-decoration: none;
+  border-bottom: 1px solid #999999;
+}
+
+
+#optTabularView thead.stepTableThead {
+  background-color: #bbb;
+}
+
+#optTabularView tbody.stepTableTbody {
+}
+
+#optTabularView td.stepTableTd {
+  padding: 3px 10px;
+}
+
+
+/* BEGIN Java frontend by David Pritchard and Will Gwozdz */
+
+/* stack and queue css by Will Gwozdz */
+div.ExecutionVisualizer table.queueTbl,
+div.ExecutionVisualizer table.stackTbl {
+  background-color: #ffffc6;
+}
+
+div.ExecutionVisualizer table.queueTbl,
+div.ExecutionVisualizer table.stackTbl {
+  border: 0px solid black;
+  border-spacing: 0px;
+}
+
+div.ExecutionVisualizer table.stackTbl td.stackElt,
+div.ExecutionVisualizer table.queueTbl td.queueElt {
+  padding-left: 8px;
+  padding-right: 8px;
+  padding-top: 2px;
+  padding-bottom: 3px;
+  border-top: 1px solid #555555;
+  border-bottom: 1px solid #555555;
+  border-left: 1px dashed #555555;
+}
+
+div.ExecutionVisualizer table.stackTbl td.stackFElt,
+div.ExecutionVisualizer table.queueTbl td.queueFElt {
+  background-color: white;
+  border-top: 1px solid #555555;
+  border-bottom: 1px solid #555555;
+}
+
+div.ExecutionVisualizer table.stackTbl td.stackLElt {
+  background-color: white;
+  border-left: 1px solid #555555;
+}
+
+div.ExecutionVisualizer table.queueTbl td.queueLElt {
+  background-color: white;
+  border-top: 1px solid#555555;
+  border-bottom: 1px solid #555555;
+  border-left: 1px dashed #555555;
+}
+
+/* This ensures a border is drawn around a dict
+   if its nested in another object. */
+div.ExecutionVisualizer td.stackElt table.dictTbl,
+div.ExecutionVisualizer td.stackLElt table.dictTbl,
+div.ExecutionVisualizer td.stackFElt table.dictTbl,
+div.ExecutionVisualizer td.queueElt table.dictTbl,
+div.ExecutionVisualizer td.queueLElt table.dictTbl,
+div.ExecutionVisualizer td.queueFElt table.dictTbl {
+  border: 1px #888 solid;
+}
+
+.symbolic {
+  font-size: 18pt;
+}
+
+/* END Java frontend by David Pritchard and Will Gwozdz */
diff --git a/v3/css/ui-lightness/images/ui-bg_diagonals-thick_18_b81900_40x40.png b/v3/css/ui-lightness/images/ui-bg_diagonals-thick_18_b81900_40x40.png
new file mode 100644
index 000000000..954e22dbd
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_diagonals-thick_18_b81900_40x40.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_diagonals-thick_20_666666_40x40.png b/v3/css/ui-lightness/images/ui-bg_diagonals-thick_20_666666_40x40.png
new file mode 100644
index 000000000..64ece5707
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_diagonals-thick_20_666666_40x40.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_flat_10_000000_40x100.png b/v3/css/ui-lightness/images/ui-bg_flat_10_000000_40x100.png
new file mode 100644
index 000000000..abdc01082
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_flat_10_000000_40x100.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_glass_100_f6f6f6_1x400.png b/v3/css/ui-lightness/images/ui-bg_glass_100_f6f6f6_1x400.png
new file mode 100644
index 000000000..9b383f4d2
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_glass_100_f6f6f6_1x400.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_glass_100_fdf5ce_1x400.png b/v3/css/ui-lightness/images/ui-bg_glass_100_fdf5ce_1x400.png
new file mode 100644
index 000000000..a23baad25
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_glass_100_fdf5ce_1x400.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_glass_65_ffffff_1x400.png b/v3/css/ui-lightness/images/ui-bg_glass_65_ffffff_1x400.png
new file mode 100644
index 000000000..42ccba269
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_glass_65_ffffff_1x400.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_gloss-wave_35_f6a828_500x100.png b/v3/css/ui-lightness/images/ui-bg_gloss-wave_35_f6a828_500x100.png
new file mode 100644
index 000000000..39d5824d6
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_gloss-wave_35_f6a828_500x100.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_highlight-soft_100_eeeeee_1x100.png b/v3/css/ui-lightness/images/ui-bg_highlight-soft_100_eeeeee_1x100.png
new file mode 100644
index 000000000..f1273672d
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_highlight-soft_100_eeeeee_1x100.png differ
diff --git a/v3/css/ui-lightness/images/ui-bg_highlight-soft_75_ffe45c_1x100.png b/v3/css/ui-lightness/images/ui-bg_highlight-soft_75_ffe45c_1x100.png
new file mode 100644
index 000000000..359397acf
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-bg_highlight-soft_75_ffe45c_1x100.png differ
diff --git a/v3/css/ui-lightness/images/ui-icons_222222_256x240.png b/v3/css/ui-lightness/images/ui-icons_222222_256x240.png
new file mode 100644
index 000000000..b273ff111
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-icons_222222_256x240.png differ
diff --git a/v3/css/ui-lightness/images/ui-icons_228ef1_256x240.png b/v3/css/ui-lightness/images/ui-icons_228ef1_256x240.png
new file mode 100644
index 000000000..a641a371a
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-icons_228ef1_256x240.png differ
diff --git a/v3/css/ui-lightness/images/ui-icons_ef8c08_256x240.png b/v3/css/ui-lightness/images/ui-icons_ef8c08_256x240.png
new file mode 100644
index 000000000..85e63e9f6
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-icons_ef8c08_256x240.png differ
diff --git a/v3/css/ui-lightness/images/ui-icons_ffd27a_256x240.png b/v3/css/ui-lightness/images/ui-icons_ffd27a_256x240.png
new file mode 100644
index 000000000..e117effa3
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-icons_ffd27a_256x240.png differ
diff --git a/v3/css/ui-lightness/images/ui-icons_ffffff_256x240.png b/v3/css/ui-lightness/images/ui-icons_ffffff_256x240.png
new file mode 100644
index 000000000..42f8f992c
Binary files /dev/null and b/v3/css/ui-lightness/images/ui-icons_ffffff_256x240.png differ
diff --git a/v3/css/ui-lightness/jquery-ui-1.8.21.custom.css b/v3/css/ui-lightness/jquery-ui-1.8.21.custom.css
new file mode 100644
index 000000000..1bc08fb33
--- /dev/null
+++ b/v3/css/ui-lightness/jquery-ui-1.8.21.custom.css
@@ -0,0 +1,316 @@
+/*!
+ * jQuery UI CSS Framework 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ */
+
+/* Layout helpers
+----------------------------------*/
+.ui-helper-hidden { display: none; }
+.ui-helper-hidden-accessible { position: absolute !important; clip: rect(1px 1px 1px 1px); clip: rect(1px,1px,1px,1px); }
+.ui-helper-reset { margin: 0; padding: 0; border: 0; outline: 0; line-height: 1.3; text-decoration: none; font-size: 100%; list-style: none; }
+.ui-helper-clearfix:before, .ui-helper-clearfix:after { content: ""; display: table; }
+.ui-helper-clearfix:after { clear: both; }
+.ui-helper-clearfix { zoom: 1; }
+.ui-helper-zfix { width: 100%; height: 100%; top: 0; left: 0; position: absolute; opacity: 0; filter:Alpha(Opacity=0); }
+
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-disabled { cursor: default !important; }
+
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { display: block; text-indent: -99999px; overflow: hidden; background-repeat: no-repeat; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Overlays */
+.ui-widget-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
+
+
+/*!
+ * jQuery UI CSS Framework 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ *
+ * To view and modify this theme, visit http://jqueryui.com/themeroller/?ffDefault=Trebuchet%20MS,%20Tahoma,%20Verdana,%20Arial,%20sans-serif&fwDefault=bold&fsDefault=1.1em&cornerRadius=4px&bgColorHeader=f6a828&bgTextureHeader=12_gloss_wave.png&bgImgOpacityHeader=35&borderColorHeader=e78f08&fcHeader=ffffff&iconColorHeader=ffffff&bgColorContent=eeeeee&bgTextureContent=03_highlight_soft.png&bgImgOpacityContent=100&borderColorContent=dddddd&fcContent=333333&iconColorContent=222222&bgColorDefault=f6f6f6&bgTextureDefault=02_glass.png&bgImgOpacityDefault=100&borderColorDefault=cccccc&fcDefault=1c94c4&iconColorDefault=ef8c08&bgColorHover=fdf5ce&bgTextureHover=02_glass.png&bgImgOpacityHover=100&borderColorHover=fbcb09&fcHover=c77405&iconColorHover=ef8c08&bgColorActive=ffffff&bgTextureActive=02_glass.png&bgImgOpacityActive=65&borderColorActive=fbd850&fcActive=eb8f00&iconColorActive=ef8c08&bgColorHighlight=ffe45c&bgTextureHighlight=03_highlight_soft.png&bgImgOpacityHighlight=75&borderColorHighlight=fed22f&fcHighlight=363636&iconColorHighlight=228ef1&bgColorError=b81900&bgTextureError=08_diagonals_thick.png&bgImgOpacityError=18&borderColorError=cd0a0a&fcError=ffffff&iconColorError=ffd27a&bgColorOverlay=666666&bgTextureOverlay=08_diagonals_thick.png&bgImgOpacityOverlay=20&opacityOverlay=50&bgColorShadow=000000&bgTextureShadow=01_flat.png&bgImgOpacityShadow=10&opacityShadow=20&thicknessShadow=5px&offsetTopShadow=-5px&offsetLeftShadow=-5px&cornerRadiusShadow=5px
+ */
+
+
+/* Component containers
+----------------------------------*/
+.ui-widget { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1.1em; }
+.ui-widget .ui-widget { font-size: 1em; }
+.ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1em; }
+/* pgbovine - switch border from #dddddd to #ccc */
+.ui-widget-content { border: 1px solid #ccc; background: #eeeeee url(images/ui-bg_highlight-soft_100_eeeeee_1x100.png) 50% top repeat-x; color: #333333; }
+.ui-widget-content a { color: #333333; }
+.ui-widget-header { border: 1px solid #e78f08; background: #f6a828 url(images/ui-bg_gloss-wave_35_f6a828_500x100.png) 50% 50% repeat-x; color: #ffffff; font-weight: bold; }
+.ui-widget-header a { color: #ffffff; }
+
+/* Interaction states
+----------------------------------*/
+.ui-state-default, .ui-widget-content .ui-state-default, .ui-widget-header .ui-state-default { border: 1px solid #cccccc; background: #f6f6f6 url(images/ui-bg_glass_100_f6f6f6_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #1c94c4; }
+.ui-state-default a, .ui-state-default a:link, .ui-state-default a:visited { color: #1c94c4; text-decoration: none; }
+
+/* pgbovine - eliminate hover colors */
+/*
+.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, .ui-widget-content .ui-state-focus, .ui-widget-header .ui-state-focus { border: 1px solid #fbcb09; background: #fdf5ce url(images/ui-bg_glass_100_fdf5ce_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #c77405; }
+.ui-state-hover a, .ui-state-hover a:hover { color: #c77405; text-decoration: none; }
+*/
+
+.ui-state-active, .ui-widget-content .ui-state-active, .ui-widget-header .ui-state-active { border: 1px solid #fbd850; background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #eb8f00; }
+.ui-state-active a, .ui-state-active a:link, .ui-state-active a:visited { color: #eb8f00; text-decoration: none; }
+.ui-widget :active { outline: none; }
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-highlight, .ui-widget-content .ui-state-highlight, .ui-widget-header .ui-state-highlight  {border: 1px solid #fed22f; background: #ffe45c url(images/ui-bg_highlight-soft_75_ffe45c_1x100.png) 50% top repeat-x; color: #363636; }
+.ui-state-highlight a, .ui-widget-content .ui-state-highlight a,.ui-widget-header .ui-state-highlight a { color: #363636; }
+.ui-state-error, .ui-widget-content .ui-state-error, .ui-widget-header .ui-state-error {border: 1px solid #cd0a0a; background: #b81900 url(images/ui-bg_diagonals-thick_18_b81900_40x40.png) 50% 50% repeat; color: #ffffff; }
+.ui-state-error a, .ui-widget-content .ui-state-error a, .ui-widget-header .ui-state-error a { color: #ffffff; }
+.ui-state-error-text, .ui-widget-content .ui-state-error-text, .ui-widget-header .ui-state-error-text { color: #ffffff; }
+.ui-priority-primary, .ui-widget-content .ui-priority-primary, .ui-widget-header .ui-priority-primary { font-weight: bold; }
+.ui-priority-secondary, .ui-widget-content .ui-priority-secondary,  .ui-widget-header .ui-priority-secondary { opacity: .7; filter:Alpha(Opacity=70); font-weight: normal; }
+.ui-state-disabled, .ui-widget-content .ui-state-disabled, .ui-widget-header .ui-state-disabled { opacity: .35; filter:Alpha(Opacity=35); background-image: none; }
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { width: 16px; height: 16px; background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-content .ui-icon {background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-header .ui-icon {background-image: url(images/ui-icons_ffffff_256x240.png); }
+.ui-state-default .ui-icon { background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-hover .ui-icon, .ui-state-focus .ui-icon {background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-active .ui-icon {background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-highlight .ui-icon {background-image: url(images/ui-icons_228ef1_256x240.png); }
+.ui-state-error .ui-icon, .ui-state-error-text .ui-icon {background-image: url(images/ui-icons_ffd27a_256x240.png); }
+
+/* positioning */
+.ui-icon-carat-1-n { background-position: 0 0; }
+.ui-icon-carat-1-ne { background-position: -16px 0; }
+.ui-icon-carat-1-e { background-position: -32px 0; }
+.ui-icon-carat-1-se { background-position: -48px 0; }
+.ui-icon-carat-1-s { background-position: -64px 0; }
+.ui-icon-carat-1-sw { background-position: -80px 0; }
+.ui-icon-carat-1-w { background-position: -96px 0; }
+.ui-icon-carat-1-nw { background-position: -112px 0; }
+.ui-icon-carat-2-n-s { background-position: -128px 0; }
+.ui-icon-carat-2-e-w { background-position: -144px 0; }
+.ui-icon-triangle-1-n { background-position: 0 -16px; }
+.ui-icon-triangle-1-ne { background-position: -16px -16px; }
+.ui-icon-triangle-1-e { background-position: -32px -16px; }
+.ui-icon-triangle-1-se { background-position: -48px -16px; }
+.ui-icon-triangle-1-s { background-position: -64px -16px; }
+.ui-icon-triangle-1-sw { background-position: -80px -16px; }
+.ui-icon-triangle-1-w { background-position: -96px -16px; }
+.ui-icon-triangle-1-nw { background-position: -112px -16px; }
+.ui-icon-triangle-2-n-s { background-position: -128px -16px; }
+.ui-icon-triangle-2-e-w { background-position: -144px -16px; }
+.ui-icon-arrow-1-n { background-position: 0 -32px; }
+.ui-icon-arrow-1-ne { background-position: -16px -32px; }
+.ui-icon-arrow-1-e { background-position: -32px -32px; }
+.ui-icon-arrow-1-se { background-position: -48px -32px; }
+.ui-icon-arrow-1-s { background-position: -64px -32px; }
+.ui-icon-arrow-1-sw { background-position: -80px -32px; }
+.ui-icon-arrow-1-w { background-position: -96px -32px; }
+.ui-icon-arrow-1-nw { background-position: -112px -32px; }
+.ui-icon-arrow-2-n-s { background-position: -128px -32px; }
+.ui-icon-arrow-2-ne-sw { background-position: -144px -32px; }
+.ui-icon-arrow-2-e-w { background-position: -160px -32px; }
+.ui-icon-arrow-2-se-nw { background-position: -176px -32px; }
+.ui-icon-arrowstop-1-n { background-position: -192px -32px; }
+.ui-icon-arrowstop-1-e { background-position: -208px -32px; }
+.ui-icon-arrowstop-1-s { background-position: -224px -32px; }
+.ui-icon-arrowstop-1-w { background-position: -240px -32px; }
+.ui-icon-arrowthick-1-n { background-position: 0 -48px; }
+.ui-icon-arrowthick-1-ne { background-position: -16px -48px; }
+.ui-icon-arrowthick-1-e { background-position: -32px -48px; }
+.ui-icon-arrowthick-1-se { background-position: -48px -48px; }
+.ui-icon-arrowthick-1-s { background-position: -64px -48px; }
+.ui-icon-arrowthick-1-sw { background-position: -80px -48px; }
+.ui-icon-arrowthick-1-w { background-position: -96px -48px; }
+.ui-icon-arrowthick-1-nw { background-position: -112px -48px; }
+.ui-icon-arrowthick-2-n-s { background-position: -128px -48px; }
+.ui-icon-arrowthick-2-ne-sw { background-position: -144px -48px; }
+.ui-icon-arrowthick-2-e-w { background-position: -160px -48px; }
+.ui-icon-arrowthick-2-se-nw { background-position: -176px -48px; }
+.ui-icon-arrowthickstop-1-n { background-position: -192px -48px; }
+.ui-icon-arrowthickstop-1-e { background-position: -208px -48px; }
+.ui-icon-arrowthickstop-1-s { background-position: -224px -48px; }
+.ui-icon-arrowthickstop-1-w { background-position: -240px -48px; }
+.ui-icon-arrowreturnthick-1-w { background-position: 0 -64px; }
+.ui-icon-arrowreturnthick-1-n { background-position: -16px -64px; }
+.ui-icon-arrowreturnthick-1-e { background-position: -32px -64px; }
+.ui-icon-arrowreturnthick-1-s { background-position: -48px -64px; }
+.ui-icon-arrowreturn-1-w { background-position: -64px -64px; }
+.ui-icon-arrowreturn-1-n { background-position: -80px -64px; }
+.ui-icon-arrowreturn-1-e { background-position: -96px -64px; }
+.ui-icon-arrowreturn-1-s { background-position: -112px -64px; }
+.ui-icon-arrowrefresh-1-w { background-position: -128px -64px; }
+.ui-icon-arrowrefresh-1-n { background-position: -144px -64px; }
+.ui-icon-arrowrefresh-1-e { background-position: -160px -64px; }
+.ui-icon-arrowrefresh-1-s { background-position: -176px -64px; }
+.ui-icon-arrow-4 { background-position: 0 -80px; }
+.ui-icon-arrow-4-diag { background-position: -16px -80px; }
+.ui-icon-extlink { background-position: -32px -80px; }
+.ui-icon-newwin { background-position: -48px -80px; }
+.ui-icon-refresh { background-position: -64px -80px; }
+.ui-icon-shuffle { background-position: -80px -80px; }
+.ui-icon-transfer-e-w { background-position: -96px -80px; }
+.ui-icon-transferthick-e-w { background-position: -112px -80px; }
+.ui-icon-folder-collapsed { background-position: 0 -96px; }
+.ui-icon-folder-open { background-position: -16px -96px; }
+.ui-icon-document { background-position: -32px -96px; }
+.ui-icon-document-b { background-position: -48px -96px; }
+.ui-icon-note { background-position: -64px -96px; }
+.ui-icon-mail-closed { background-position: -80px -96px; }
+.ui-icon-mail-open { background-position: -96px -96px; }
+.ui-icon-suitcase { background-position: -112px -96px; }
+.ui-icon-comment { background-position: -128px -96px; }
+.ui-icon-person { background-position: -144px -96px; }
+.ui-icon-print { background-position: -160px -96px; }
+.ui-icon-trash { background-position: -176px -96px; }
+.ui-icon-locked { background-position: -192px -96px; }
+.ui-icon-unlocked { background-position: -208px -96px; }
+.ui-icon-bookmark { background-position: -224px -96px; }
+.ui-icon-tag { background-position: -240px -96px; }
+.ui-icon-home { background-position: 0 -112px; }
+.ui-icon-flag { background-position: -16px -112px; }
+.ui-icon-calendar { background-position: -32px -112px; }
+.ui-icon-cart { background-position: -48px -112px; }
+.ui-icon-pencil { background-position: -64px -112px; }
+.ui-icon-clock { background-position: -80px -112px; }
+.ui-icon-disk { background-position: -96px -112px; }
+.ui-icon-calculator { background-position: -112px -112px; }
+.ui-icon-zoomin { background-position: -128px -112px; }
+.ui-icon-zoomout { background-position: -144px -112px; }
+.ui-icon-search { background-position: -160px -112px; }
+.ui-icon-wrench { background-position: -176px -112px; }
+.ui-icon-gear { background-position: -192px -112px; }
+.ui-icon-heart { background-position: -208px -112px; }
+.ui-icon-star { background-position: -224px -112px; }
+.ui-icon-link { background-position: -240px -112px; }
+.ui-icon-cancel { background-position: 0 -128px; }
+.ui-icon-plus { background-position: -16px -128px; }
+.ui-icon-plusthick { background-position: -32px -128px; }
+.ui-icon-minus { background-position: -48px -128px; }
+.ui-icon-minusthick { background-position: -64px -128px; }
+.ui-icon-close { background-position: -80px -128px; }
+.ui-icon-closethick { background-position: -96px -128px; }
+.ui-icon-key { background-position: -112px -128px; }
+.ui-icon-lightbulb { background-position: -128px -128px; }
+.ui-icon-scissors { background-position: -144px -128px; }
+.ui-icon-clipboard { background-position: -160px -128px; }
+.ui-icon-copy { background-position: -176px -128px; }
+.ui-icon-contact { background-position: -192px -128px; }
+.ui-icon-image { background-position: -208px -128px; }
+.ui-icon-video { background-position: -224px -128px; }
+.ui-icon-script { background-position: -240px -128px; }
+.ui-icon-alert { background-position: 0 -144px; }
+.ui-icon-info { background-position: -16px -144px; }
+.ui-icon-notice { background-position: -32px -144px; }
+.ui-icon-help { background-position: -48px -144px; }
+.ui-icon-check { background-position: -64px -144px; }
+.ui-icon-bullet { background-position: -80px -144px; }
+.ui-icon-radio-off { background-position: -96px -144px; }
+.ui-icon-radio-on { background-position: -112px -144px; }
+.ui-icon-pin-w { background-position: -128px -144px; }
+.ui-icon-pin-s { background-position: -144px -144px; }
+.ui-icon-play { background-position: 0 -160px; }
+.ui-icon-pause { background-position: -16px -160px; }
+.ui-icon-seek-next { background-position: -32px -160px; }
+.ui-icon-seek-prev { background-position: -48px -160px; }
+.ui-icon-seek-end { background-position: -64px -160px; }
+.ui-icon-seek-start { background-position: -80px -160px; }
+/* ui-icon-seek-first is deprecated, use ui-icon-seek-start instead */
+.ui-icon-seek-first { background-position: -80px -160px; }
+.ui-icon-stop { background-position: -96px -160px; }
+.ui-icon-eject { background-position: -112px -160px; }
+.ui-icon-volume-off { background-position: -128px -160px; }
+.ui-icon-volume-on { background-position: -144px -160px; }
+.ui-icon-power { background-position: 0 -176px; }
+.ui-icon-signal-diag { background-position: -16px -176px; }
+.ui-icon-signal { background-position: -32px -176px; }
+.ui-icon-battery-0 { background-position: -48px -176px; }
+.ui-icon-battery-1 { background-position: -64px -176px; }
+.ui-icon-battery-2 { background-position: -80px -176px; }
+.ui-icon-battery-3 { background-position: -96px -176px; }
+.ui-icon-circle-plus { background-position: 0 -192px; }
+.ui-icon-circle-minus { background-position: -16px -192px; }
+.ui-icon-circle-close { background-position: -32px -192px; }
+.ui-icon-circle-triangle-e { background-position: -48px -192px; }
+.ui-icon-circle-triangle-s { background-position: -64px -192px; }
+.ui-icon-circle-triangle-w { background-position: -80px -192px; }
+.ui-icon-circle-triangle-n { background-position: -96px -192px; }
+.ui-icon-circle-arrow-e { background-position: -112px -192px; }
+.ui-icon-circle-arrow-s { background-position: -128px -192px; }
+.ui-icon-circle-arrow-w { background-position: -144px -192px; }
+.ui-icon-circle-arrow-n { background-position: -160px -192px; }
+.ui-icon-circle-zoomin { background-position: -176px -192px; }
+.ui-icon-circle-zoomout { background-position: -192px -192px; }
+.ui-icon-circle-check { background-position: -208px -192px; }
+.ui-icon-circlesmall-plus { background-position: 0 -208px; }
+.ui-icon-circlesmall-minus { background-position: -16px -208px; }
+.ui-icon-circlesmall-close { background-position: -32px -208px; }
+.ui-icon-squaresmall-plus { background-position: -48px -208px; }
+.ui-icon-squaresmall-minus { background-position: -64px -208px; }
+.ui-icon-squaresmall-close { background-position: -80px -208px; }
+.ui-icon-grip-dotted-vertical { background-position: 0 -224px; }
+.ui-icon-grip-dotted-horizontal { background-position: -16px -224px; }
+.ui-icon-grip-solid-vertical { background-position: -32px -224px; }
+.ui-icon-grip-solid-horizontal { background-position: -48px -224px; }
+.ui-icon-gripsmall-diagonal-se { background-position: -64px -224px; }
+.ui-icon-grip-diagonal-se { background-position: -80px -224px; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Corner radius */
+.ui-corner-all, .ui-corner-top, .ui-corner-left, .ui-corner-tl { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; -khtml-border-top-left-radius: 4px; border-top-left-radius: 4px; }
+.ui-corner-all, .ui-corner-top, .ui-corner-right, .ui-corner-tr { -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; -khtml-border-top-right-radius: 4px; border-top-right-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-left, .ui-corner-bl { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; -khtml-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-right, .ui-corner-br { -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; -khtml-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; }
+
+/* Overlays */
+.ui-widget-overlay { background: #666666 url(images/ui-bg_diagonals-thick_20_666666_40x40.png) 50% 50% repeat; opacity: .50;filter:Alpha(Opacity=50); }
+.ui-widget-shadow { margin: -5px 0 0 -5px; padding: 5px; background: #000000 url(images/ui-bg_flat_10_000000_40x100.png) 50% 50% repeat-x; opacity: .20;filter:Alpha(Opacity=20); -moz-border-radius: 5px; -khtml-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px; }/*!
+ * jQuery UI Slider 1.8.21
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Slider#theming
+ */
+.ui-slider { position: relative; text-align: left; }
+.ui-slider .ui-slider-handle { position: absolute; z-index: 2; width: 1.2em; height: 1.2em; cursor: default; }
+.ui-slider .ui-slider-range { position: absolute; z-index: 1; font-size: .7em; display: block; border: 0; background-position: 0 0; }
+
+.ui-slider-horizontal { height: .8em; }
+.ui-slider-horizontal .ui-slider-handle { top: -.3em; margin-left: -.6em; }
+.ui-slider-horizontal .ui-slider-range { top: 0; height: 100%; }
+.ui-slider-horizontal .ui-slider-range-min { left: 0; }
+.ui-slider-horizontal .ui-slider-range-max { right: 0; }
+
+.ui-slider-vertical { width: .8em; height: 100px; }
+.ui-slider-vertical .ui-slider-handle { left: -.3em; margin-left: 0; margin-bottom: -.6em; }
+.ui-slider-vertical .ui-slider-range { left: 0; width: 100%; }
+.ui-slider-vertical .ui-slider-range-min { bottom: 0; }
+.ui-slider-vertical .ui-slider-range-max { top: 0; }
diff --git a/v3/css/ui-lightness/jquery-ui-1.8.24.custom.css b/v3/css/ui-lightness/jquery-ui-1.8.24.custom.css
new file mode 100644
index 000000000..f3988bcea
--- /dev/null
+++ b/v3/css/ui-lightness/jquery-ui-1.8.24.custom.css
@@ -0,0 +1,335 @@
+/*!
+ * jQuery UI CSS Framework 1.8.24
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ */
+
+/* Layout helpers
+----------------------------------*/
+.ui-helper-hidden { display: none; }
+.ui-helper-hidden-accessible { position: absolute !important; clip: rect(1px 1px 1px 1px); clip: rect(1px,1px,1px,1px); }
+.ui-helper-reset { margin: 0; padding: 0; border: 0; outline: 0; line-height: 1.3; text-decoration: none; font-size: 100%; list-style: none; }
+.ui-helper-clearfix:before, .ui-helper-clearfix:after { content: ""; display: table; }
+.ui-helper-clearfix:after { clear: both; }
+.ui-helper-clearfix { zoom: 1; }
+.ui-helper-zfix { width: 100%; height: 100%; top: 0; left: 0; position: absolute; opacity: 0; filter:Alpha(Opacity=0); }
+
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-disabled { cursor: default !important; }
+
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { display: block; text-indent: -99999px; overflow: hidden; background-repeat: no-repeat; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Overlays */
+.ui-widget-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
+
+
+/*!
+ * jQuery UI CSS Framework 1.8.24
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Theming/API
+ *
+ * To view and modify this theme, visit http://jqueryui.com/themeroller/?ffDefault=Trebuchet%20MS,%20Tahoma,%20Verdana,%20Arial,%20sans-serif&fwDefault=bold&fsDefault=1.1em&cornerRadius=4px&bgColorHeader=f6a828&bgTextureHeader=12_gloss_wave.png&bgImgOpacityHeader=35&borderColorHeader=e78f08&fcHeader=ffffff&iconColorHeader=ffffff&bgColorContent=eeeeee&bgTextureContent=03_highlight_soft.png&bgImgOpacityContent=100&borderColorContent=dddddd&fcContent=333333&iconColorContent=222222&bgColorDefault=f6f6f6&bgTextureDefault=02_glass.png&bgImgOpacityDefault=100&borderColorDefault=cccccc&fcDefault=1c94c4&iconColorDefault=ef8c08&bgColorHover=fdf5ce&bgTextureHover=02_glass.png&bgImgOpacityHover=100&borderColorHover=fbcb09&fcHover=c77405&iconColorHover=ef8c08&bgColorActive=ffffff&bgTextureActive=02_glass.png&bgImgOpacityActive=65&borderColorActive=fbd850&fcActive=eb8f00&iconColorActive=ef8c08&bgColorHighlight=ffe45c&bgTextureHighlight=03_highlight_soft.png&bgImgOpacityHighlight=75&borderColorHighlight=fed22f&fcHighlight=363636&iconColorHighlight=228ef1&bgColorError=b81900&bgTextureError=08_diagonals_thick.png&bgImgOpacityError=18&borderColorError=cd0a0a&fcError=ffffff&iconColorError=ffd27a&bgColorOverlay=666666&bgTextureOverlay=08_diagonals_thick.png&bgImgOpacityOverlay=20&opacityOverlay=50&bgColorShadow=000000&bgTextureShadow=01_flat.png&bgImgOpacityShadow=10&opacityShadow=20&thicknessShadow=5px&offsetTopShadow=-5px&offsetLeftShadow=-5px&cornerRadiusShadow=5px
+ */
+
+
+/* Component containers
+----------------------------------*/
+.ui-widget { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1.1em; }
+.ui-widget .ui-widget { font-size: 1em; }
+.ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: Trebuchet MS, Tahoma, Verdana, Arial, sans-serif; font-size: 1em; }
+/* pgbovine - switch border from #dddddd to #ccc */
+.ui-widget-content { border: 1px solid #ccc; background: #eeeeee url(images/ui-bg_highlight-soft_100_eeeeee_1x100.png) 50% top repeat-x; color: #333333; }
+.ui-widget-content a { color: #333333; }
+.ui-widget-header { border: 1px solid #e78f08; background: #f6a828 url(images/ui-bg_gloss-wave_35_f6a828_500x100.png) 50% 50% repeat-x; color: #ffffff; font-weight: bold; }
+.ui-widget-header a { color: #ffffff; }
+
+/* Interaction states
+----------------------------------*/
+.ui-state-default, .ui-widget-content .ui-state-default, .ui-widget-header .ui-state-default { border: 1px solid #cccccc; background: #f6f6f6 url(images/ui-bg_glass_100_f6f6f6_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #1c94c4; }
+.ui-state-default a, .ui-state-default a:link, .ui-state-default a:visited { color: #1c94c4; text-decoration: none; }
+
+/* pgbovine - eliminate hover colors */
+/*
+.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, .ui-widget-content .ui-state-focus, .ui-widget-header .ui-state-focus { border: 1px solid #fbcb09; background: #fdf5ce url(images/ui-bg_glass_100_fdf5ce_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #c77405; }
+.ui-state-hover a, .ui-state-hover a:hover { color: #c77405; text-decoration: none; }
+*/
+
+.ui-state-active, .ui-widget-content .ui-state-active, .ui-widget-header .ui-state-active { border: 1px solid #fbd850; background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x; font-weight: bold; color: #eb8f00; }
+.ui-state-active a, .ui-state-active a:link, .ui-state-active a:visited { color: #eb8f00; text-decoration: none; }
+.ui-widget :active { outline: none; }
+
+/* Interaction Cues
+----------------------------------*/
+.ui-state-highlight, .ui-widget-content .ui-state-highlight, .ui-widget-header .ui-state-highlight  {border: 1px solid #fed22f; background: #ffe45c url(images/ui-bg_highlight-soft_75_ffe45c_1x100.png) 50% top repeat-x; color: #363636; }
+.ui-state-highlight a, .ui-widget-content .ui-state-highlight a,.ui-widget-header .ui-state-highlight a { color: #363636; }
+.ui-state-error, .ui-widget-content .ui-state-error, .ui-widget-header .ui-state-error {border: 1px solid #cd0a0a; background: #b81900 url(images/ui-bg_diagonals-thick_18_b81900_40x40.png) 50% 50% repeat; color: #ffffff; }
+.ui-state-error a, .ui-widget-content .ui-state-error a, .ui-widget-header .ui-state-error a { color: #ffffff; }
+.ui-state-error-text, .ui-widget-content .ui-state-error-text, .ui-widget-header .ui-state-error-text { color: #ffffff; }
+.ui-priority-primary, .ui-widget-content .ui-priority-primary, .ui-widget-header .ui-priority-primary { font-weight: bold; }
+.ui-priority-secondary, .ui-widget-content .ui-priority-secondary,  .ui-widget-header .ui-priority-secondary { opacity: .7; filter:Alpha(Opacity=70); font-weight: normal; }
+.ui-state-disabled, .ui-widget-content .ui-state-disabled, .ui-widget-header .ui-state-disabled { opacity: .35; filter:Alpha(Opacity=35); background-image: none; }
+
+/* Icons
+----------------------------------*/
+
+/* states and images */
+.ui-icon { width: 16px; height: 16px; background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-content .ui-icon {background-image: url(images/ui-icons_222222_256x240.png); }
+.ui-widget-header .ui-icon {background-image: url(images/ui-icons_ffffff_256x240.png); }
+.ui-state-default .ui-icon { background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-hover .ui-icon, .ui-state-focus .ui-icon {background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-active .ui-icon {background-image: url(images/ui-icons_ef8c08_256x240.png); }
+.ui-state-highlight .ui-icon {background-image: url(images/ui-icons_228ef1_256x240.png); }
+.ui-state-error .ui-icon, .ui-state-error-text .ui-icon {background-image: url(images/ui-icons_ffd27a_256x240.png); }
+
+/* positioning */
+.ui-icon-carat-1-n { background-position: 0 0; }
+.ui-icon-carat-1-ne { background-position: -16px 0; }
+.ui-icon-carat-1-e { background-position: -32px 0; }
+.ui-icon-carat-1-se { background-position: -48px 0; }
+.ui-icon-carat-1-s { background-position: -64px 0; }
+.ui-icon-carat-1-sw { background-position: -80px 0; }
+.ui-icon-carat-1-w { background-position: -96px 0; }
+.ui-icon-carat-1-nw { background-position: -112px 0; }
+.ui-icon-carat-2-n-s { background-position: -128px 0; }
+.ui-icon-carat-2-e-w { background-position: -144px 0; }
+.ui-icon-triangle-1-n { background-position: 0 -16px; }
+.ui-icon-triangle-1-ne { background-position: -16px -16px; }
+.ui-icon-triangle-1-e { background-position: -32px -16px; }
+.ui-icon-triangle-1-se { background-position: -48px -16px; }
+.ui-icon-triangle-1-s { background-position: -64px -16px; }
+.ui-icon-triangle-1-sw { background-position: -80px -16px; }
+.ui-icon-triangle-1-w { background-position: -96px -16px; }
+.ui-icon-triangle-1-nw { background-position: -112px -16px; }
+.ui-icon-triangle-2-n-s { background-position: -128px -16px; }
+.ui-icon-triangle-2-e-w { background-position: -144px -16px; }
+.ui-icon-arrow-1-n { background-position: 0 -32px; }
+.ui-icon-arrow-1-ne { background-position: -16px -32px; }
+.ui-icon-arrow-1-e { background-position: -32px -32px; }
+.ui-icon-arrow-1-se { background-position: -48px -32px; }
+.ui-icon-arrow-1-s { background-position: -64px -32px; }
+.ui-icon-arrow-1-sw { background-position: -80px -32px; }
+.ui-icon-arrow-1-w { background-position: -96px -32px; }
+.ui-icon-arrow-1-nw { background-position: -112px -32px; }
+.ui-icon-arrow-2-n-s { background-position: -128px -32px; }
+.ui-icon-arrow-2-ne-sw { background-position: -144px -32px; }
+.ui-icon-arrow-2-e-w { background-position: -160px -32px; }
+.ui-icon-arrow-2-se-nw { background-position: -176px -32px; }
+.ui-icon-arrowstop-1-n { background-position: -192px -32px; }
+.ui-icon-arrowstop-1-e { background-position: -208px -32px; }
+.ui-icon-arrowstop-1-s { background-position: -224px -32px; }
+.ui-icon-arrowstop-1-w { background-position: -240px -32px; }
+.ui-icon-arrowthick-1-n { background-position: 0 -48px; }
+.ui-icon-arrowthick-1-ne { background-position: -16px -48px; }
+.ui-icon-arrowthick-1-e { background-position: -32px -48px; }
+.ui-icon-arrowthick-1-se { background-position: -48px -48px; }
+.ui-icon-arrowthick-1-s { background-position: -64px -48px; }
+.ui-icon-arrowthick-1-sw { background-position: -80px -48px; }
+.ui-icon-arrowthick-1-w { background-position: -96px -48px; }
+.ui-icon-arrowthick-1-nw { background-position: -112px -48px; }
+.ui-icon-arrowthick-2-n-s { background-position: -128px -48px; }
+.ui-icon-arrowthick-2-ne-sw { background-position: -144px -48px; }
+.ui-icon-arrowthick-2-e-w { background-position: -160px -48px; }
+.ui-icon-arrowthick-2-se-nw { background-position: -176px -48px; }
+.ui-icon-arrowthickstop-1-n { background-position: -192px -48px; }
+.ui-icon-arrowthickstop-1-e { background-position: -208px -48px; }
+.ui-icon-arrowthickstop-1-s { background-position: -224px -48px; }
+.ui-icon-arrowthickstop-1-w { background-position: -240px -48px; }
+.ui-icon-arrowreturnthick-1-w { background-position: 0 -64px; }
+.ui-icon-arrowreturnthick-1-n { background-position: -16px -64px; }
+.ui-icon-arrowreturnthick-1-e { background-position: -32px -64px; }
+.ui-icon-arrowreturnthick-1-s { background-position: -48px -64px; }
+.ui-icon-arrowreturn-1-w { background-position: -64px -64px; }
+.ui-icon-arrowreturn-1-n { background-position: -80px -64px; }
+.ui-icon-arrowreturn-1-e { background-position: -96px -64px; }
+.ui-icon-arrowreturn-1-s { background-position: -112px -64px; }
+.ui-icon-arrowrefresh-1-w { background-position: -128px -64px; }
+.ui-icon-arrowrefresh-1-n { background-position: -144px -64px; }
+.ui-icon-arrowrefresh-1-e { background-position: -160px -64px; }
+.ui-icon-arrowrefresh-1-s { background-position: -176px -64px; }
+.ui-icon-arrow-4 { background-position: 0 -80px; }
+.ui-icon-arrow-4-diag { background-position: -16px -80px; }
+.ui-icon-extlink { background-position: -32px -80px; }
+.ui-icon-newwin { background-position: -48px -80px; }
+.ui-icon-refresh { background-position: -64px -80px; }
+.ui-icon-shuffle { background-position: -80px -80px; }
+.ui-icon-transfer-e-w { background-position: -96px -80px; }
+.ui-icon-transferthick-e-w { background-position: -112px -80px; }
+.ui-icon-folder-collapsed { background-position: 0 -96px; }
+.ui-icon-folder-open { background-position: -16px -96px; }
+.ui-icon-document { background-position: -32px -96px; }
+.ui-icon-document-b { background-position: -48px -96px; }
+.ui-icon-note { background-position: -64px -96px; }
+.ui-icon-mail-closed { background-position: -80px -96px; }
+.ui-icon-mail-open { background-position: -96px -96px; }
+.ui-icon-suitcase { background-position: -112px -96px; }
+.ui-icon-comment { background-position: -128px -96px; }
+.ui-icon-person { background-position: -144px -96px; }
+.ui-icon-print { background-position: -160px -96px; }
+.ui-icon-trash { background-position: -176px -96px; }
+.ui-icon-locked { background-position: -192px -96px; }
+.ui-icon-unlocked { background-position: -208px -96px; }
+.ui-icon-bookmark { background-position: -224px -96px; }
+.ui-icon-tag { background-position: -240px -96px; }
+.ui-icon-home { background-position: 0 -112px; }
+.ui-icon-flag { background-position: -16px -112px; }
+.ui-icon-calendar { background-position: -32px -112px; }
+.ui-icon-cart { background-position: -48px -112px; }
+.ui-icon-pencil { background-position: -64px -112px; }
+.ui-icon-clock { background-position: -80px -112px; }
+.ui-icon-disk { background-position: -96px -112px; }
+.ui-icon-calculator { background-position: -112px -112px; }
+.ui-icon-zoomin { background-position: -128px -112px; }
+.ui-icon-zoomout { background-position: -144px -112px; }
+.ui-icon-search { background-position: -160px -112px; }
+.ui-icon-wrench { background-position: -176px -112px; }
+.ui-icon-gear { background-position: -192px -112px; }
+.ui-icon-heart { background-position: -208px -112px; }
+.ui-icon-star { background-position: -224px -112px; }
+.ui-icon-link { background-position: -240px -112px; }
+.ui-icon-cancel { background-position: 0 -128px; }
+.ui-icon-plus { background-position: -16px -128px; }
+.ui-icon-plusthick { background-position: -32px -128px; }
+.ui-icon-minus { background-position: -48px -128px; }
+.ui-icon-minusthick { background-position: -64px -128px; }
+.ui-icon-close { background-position: -80px -128px; }
+.ui-icon-closethick { background-position: -96px -128px; }
+.ui-icon-key { background-position: -112px -128px; }
+.ui-icon-lightbulb { background-position: -128px -128px; }
+.ui-icon-scissors { background-position: -144px -128px; }
+.ui-icon-clipboard { background-position: -160px -128px; }
+.ui-icon-copy { background-position: -176px -128px; }
+.ui-icon-contact { background-position: -192px -128px; }
+.ui-icon-image { background-position: -208px -128px; }
+.ui-icon-video { background-position: -224px -128px; }
+.ui-icon-script { background-position: -240px -128px; }
+.ui-icon-alert { background-position: 0 -144px; }
+.ui-icon-info { background-position: -16px -144px; }
+.ui-icon-notice { background-position: -32px -144px; }
+.ui-icon-help { background-position: -48px -144px; }
+.ui-icon-check { background-position: -64px -144px; }
+.ui-icon-bullet { background-position: -80px -144px; }
+.ui-icon-radio-off { background-position: -96px -144px; }
+.ui-icon-radio-on { background-position: -112px -144px; }
+.ui-icon-pin-w { background-position: -128px -144px; }
+.ui-icon-pin-s { background-position: -144px -144px; }
+.ui-icon-play { background-position: 0 -160px; }
+.ui-icon-pause { background-position: -16px -160px; }
+.ui-icon-seek-next { background-position: -32px -160px; }
+.ui-icon-seek-prev { background-position: -48px -160px; }
+.ui-icon-seek-end { background-position: -64px -160px; }
+.ui-icon-seek-start { background-position: -80px -160px; }
+/* ui-icon-seek-first is deprecated, use ui-icon-seek-start instead */
+.ui-icon-seek-first { background-position: -80px -160px; }
+.ui-icon-stop { background-position: -96px -160px; }
+.ui-icon-eject { background-position: -112px -160px; }
+.ui-icon-volume-off { background-position: -128px -160px; }
+.ui-icon-volume-on { background-position: -144px -160px; }
+.ui-icon-power { background-position: 0 -176px; }
+.ui-icon-signal-diag { background-position: -16px -176px; }
+.ui-icon-signal { background-position: -32px -176px; }
+.ui-icon-battery-0 { background-position: -48px -176px; }
+.ui-icon-battery-1 { background-position: -64px -176px; }
+.ui-icon-battery-2 { background-position: -80px -176px; }
+.ui-icon-battery-3 { background-position: -96px -176px; }
+.ui-icon-circle-plus { background-position: 0 -192px; }
+.ui-icon-circle-minus { background-position: -16px -192px; }
+.ui-icon-circle-close { background-position: -32px -192px; }
+.ui-icon-circle-triangle-e { background-position: -48px -192px; }
+.ui-icon-circle-triangle-s { background-position: -64px -192px; }
+.ui-icon-circle-triangle-w { background-position: -80px -192px; }
+.ui-icon-circle-triangle-n { background-position: -96px -192px; }
+.ui-icon-circle-arrow-e { background-position: -112px -192px; }
+.ui-icon-circle-arrow-s { background-position: -128px -192px; }
+.ui-icon-circle-arrow-w { background-position: -144px -192px; }
+.ui-icon-circle-arrow-n { background-position: -160px -192px; }
+.ui-icon-circle-zoomin { background-position: -176px -192px; }
+.ui-icon-circle-zoomout { background-position: -192px -192px; }
+.ui-icon-circle-check { background-position: -208px -192px; }
+.ui-icon-circlesmall-plus { background-position: 0 -208px; }
+.ui-icon-circlesmall-minus { background-position: -16px -208px; }
+.ui-icon-circlesmall-close { background-position: -32px -208px; }
+.ui-icon-squaresmall-plus { background-position: -48px -208px; }
+.ui-icon-squaresmall-minus { background-position: -64px -208px; }
+.ui-icon-squaresmall-close { background-position: -80px -208px; }
+.ui-icon-grip-dotted-vertical { background-position: 0 -224px; }
+.ui-icon-grip-dotted-horizontal { background-position: -16px -224px; }
+.ui-icon-grip-solid-vertical { background-position: -32px -224px; }
+.ui-icon-grip-solid-horizontal { background-position: -48px -224px; }
+.ui-icon-gripsmall-diagonal-se { background-position: -64px -224px; }
+.ui-icon-grip-diagonal-se { background-position: -80px -224px; }
+
+
+/* Misc visuals
+----------------------------------*/
+
+/* Corner radius */
+.ui-corner-all, .ui-corner-top, .ui-corner-left, .ui-corner-tl { -moz-border-radius-topleft: 4px; -webkit-border-top-left-radius: 4px; -khtml-border-top-left-radius: 4px; border-top-left-radius: 4px; }
+.ui-corner-all, .ui-corner-top, .ui-corner-right, .ui-corner-tr { -moz-border-radius-topright: 4px; -webkit-border-top-right-radius: 4px; -khtml-border-top-right-radius: 4px; border-top-right-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-left, .ui-corner-bl { -moz-border-radius-bottomleft: 4px; -webkit-border-bottom-left-radius: 4px; -khtml-border-bottom-left-radius: 4px; border-bottom-left-radius: 4px; }
+.ui-corner-all, .ui-corner-bottom, .ui-corner-right, .ui-corner-br { -moz-border-radius-bottomright: 4px; -webkit-border-bottom-right-radius: 4px; -khtml-border-bottom-right-radius: 4px; border-bottom-right-radius: 4px; }
+
+/* Overlays */
+.ui-widget-overlay { background: #666666 url(images/ui-bg_diagonals-thick_20_666666_40x40.png) 50% 50% repeat; opacity: .50;filter:Alpha(Opacity=50); }
+.ui-widget-shadow { margin: -5px 0 0 -5px; padding: 5px; background: #000000 url(images/ui-bg_flat_10_000000_40x100.png) 50% 50% repeat-x; opacity: .20;filter:Alpha(Opacity=20); -moz-border-radius: 5px; -khtml-border-radius: 5px; -webkit-border-radius: 5px; border-radius: 5px; }/*!
+ * jQuery UI Resizable 1.8.24
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Resizable#theming
+ */
+.ui-resizable { position: relative;}
+.ui-resizable-handle { position: absolute;font-size: 0.1px; display: block; }
+.ui-resizable-disabled .ui-resizable-handle, .ui-resizable-autohide .ui-resizable-handle { display: none; }
+.ui-resizable-n { cursor: n-resize; height: 7px; width: 100%; top: -5px; left: 0; }
+.ui-resizable-s { cursor: s-resize; height: 7px; width: 100%; bottom: -5px; left: 0; }
+.ui-resizable-e { cursor: e-resize; width: 7px; right: -5px; top: 0; height: 100%; }
+.ui-resizable-w { cursor: w-resize; width: 7px; left: -5px; top: 0; height: 100%; }
+.ui-resizable-se { cursor: se-resize; width: 12px; height: 12px; right: 1px; bottom: 1px; }
+.ui-resizable-sw { cursor: sw-resize; width: 9px; height: 9px; left: -5px; bottom: -5px; }
+.ui-resizable-nw { cursor: nw-resize; width: 9px; height: 9px; left: -5px; top: -5px; }
+.ui-resizable-ne { cursor: ne-resize; width: 9px; height: 9px; right: -5px; top: -5px;}/*!
+ * jQuery UI Slider 1.8.24
+ *
+ * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * http://docs.jquery.com/UI/Slider#theming
+ */
+.ui-slider { position: relative; text-align: left; }
+.ui-slider .ui-slider-handle { position: absolute; z-index: 2; width: 1.2em; height: 1.2em; cursor: default; }
+.ui-slider .ui-slider-range { position: absolute; z-index: 1; font-size: .7em; display: block; border: 0; background-position: 0 0; }
+
+.ui-slider-horizontal { height: .8em; }
+.ui-slider-horizontal .ui-slider-handle { top: -.3em; margin-left: -.6em; }
+.ui-slider-horizontal .ui-slider-range { top: 0; height: 100%; }
+.ui-slider-horizontal .ui-slider-range-min { left: 0; }
+.ui-slider-horizontal .ui-slider-range-max { right: 0; }
+
+.ui-slider-vertical { width: .8em; height: 100px; }
+.ui-slider-vertical .ui-slider-handle { left: -.3em; margin-left: 0; margin-bottom: -.6em; }
+.ui-slider-vertical .ui-slider-range { left: 0; width: 100%; }
+.ui-slider-vertical .ui-slider-range-min { bottom: 0; }
+.ui-slider-vertical .ui-slider-range-max { top: 0; }
diff --git a/v3/css/x.png b/v3/css/x.png
new file mode 100644
index 000000000..c11f7af69
Binary files /dev/null and b/v3/css/x.png differ
diff --git a/v3/demo.html b/v3/demo.html
new file mode 100644
index 000000000..d716ab7d5
--- /dev/null
+++ b/v3/demo.html
@@ -0,0 +1,48 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Usage: Put a valid trace file in test-trace.js, and it will render when
+you load this file. see here for directions:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-trace-format.md#interlude-viewing-a-trace-in-the-opt-frontend
+
+ -->
+
+<head>
+  <title>Online Python Tutor embedding demo</title>
+
+<!-- dependencies for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.simplemodal.js"></script> <!-- for questions -->
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors 
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+<link type="text/css" href="css/basic.css" rel="stylesheet" />
+
+<!-- Python Tutor frontend code and styles -->
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+
+<!-- This JavaScript file contains the demo code - READ IT!!!
+     (Include this file AFTER all of its dependencies.)
+-->
+<script type="text/javascript" src="test-trace.js"></script>
+<script type="text/javascript">
+$(document).ready(function() {
+  var myViz = new ExecutionVisualizer('myDiv', trace /* from test-trace.js */,
+                                      {debugMode: true});
+});
+</script>
+
+</head>
+
+<body>
+  <div id="myDiv"></div>
+</body>
+</html>
diff --git a/v3/docs/chris-meyers.md b/v3/docs/chris-meyers.md
new file mode 100644
index 000000000..d92ccbec7
--- /dev/null
+++ b/v3/docs/chris-meyers.md
@@ -0,0 +1,27 @@
+Starting in Summer 2013, Chris has been adding support for
+[custom HTML rendering modules](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/html-rendering.md)
+in Online Python Tutor. His first two modules were:
+
+- [htmlFrame.py](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/htmlFrame.py)
+- [matrix.py](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/matrix.py)
+
+
+### Chris Meyers short bio (Sep 2013) ###
+
+I have been a software engineer for most of my working life, primarily in the newspaper industry. I've recently retired and now live in both Eugene Oregon and Bremen Germany.
+
+I received a BA in Physics from the University of Oregon and later a Masters degree in Computer Science.
+
+I've been using Python since 1995 and it has been by far my favorite programming language
+since then. At the newspaper where I worked (The Register Guard) we used it whenever we could,
+and especially with tools such as Django. 
+
+I have been part of the open source community. I was a co-author for the book ["How to Think like a Computer Scientist (Python)"](http://www.openbookproject.net/thinkcs/python/english2e/)
+along with Allen Downey and Jeff Elkner in 2002.
+I also have a web page [Python for Fun][p4f] aimed at intermediate programmers and students.
+
+[p4f]: http://www.openbookproject.net/py4fun
+    
+This latest project with Philip has been fun and challenging.
+Online Python Tutor has been a great success in helping people visualize code running and we hope this addition will help with the visualization of whole algorithms running as well.
+
diff --git a/v3/docs/developer-overview.md b/v3/docs/developer-overview.md
new file mode 100644
index 000000000..5005d717d
--- /dev/null
+++ b/v3/docs/developer-overview.md
@@ -0,0 +1,248 @@
+# Overview for Developers
+
+This document is a starting point for anyone who wants to hack on
+Online Python Tutor (thereafter abbreviated as OPT). View it online at:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/developer-overview.md
+
+Look at the Git history to see when this document was last updated; the more time
+elapsed since that date, the more likely things are out-of-date.
+
+I'm assuming that you're competent in Python, JavaScript, command-line-fu, and Google-fu,
+and general [command-line BS](http://www.pgbovine.net/command-line-bullshittery.htm),
+so I won't do much hand-holding in these directions.
+
+This guide isn't meant to be comprehensive; rather, it's just a starting point for learning about the code
+and development workflow. You will undoubtedly still be confused about details after reading it, so
+feel free to email philip@pgbovine.net if you have questions.
+
+
+## Getting Started: Running OPT locally on your machine using Bottle:
+
+First install the [bottle](http://bottlepy.org/) micro web framework:
+
+    easy_install pip
+    pip install bottle
+
+And then run:
+
+    cd OnlinePythonTutor/v3/
+    python bottle_server.py
+
+(Use `python3` if you want to test the Python 3 backend. Note that when you run bottle, you will **always trigger the backend for the version of Python used to invoke it**, so the Python 2/3 toggle selector on the frontend is meaningless. You will also not be able to test other language backends locally.)
+
+
+If all goes well, when you visit this URL, you should see the Python Tutor visualizer:
+
+    http://localhost:8003/visualize.html
+
+Note that you can run bottle with both Python 2 and 3.
+
+However, **only** run this app locally for testing, not in production, since all security checks are disabled.
+
+
+## Overall system architecture
+
+OPT consists of a pure-Python backend and an HTML/CSS/JavaScript frontend.
+Here is a typical user interaction sequence:
+
+1. The user visits [visualize.html](http://pythontutor.com/visualize.html) and types in Python code in the web-based text editor.
+2. The user hits the "Visualize execution" button.
+3. The OPT frontend sends the user's Python code as a string to the backend by making an Ajax GET request.
+4. The backend executes the Python code under the supervision of the Python [bdb](http://docs.python.org/library/bdb.html) debugger, produces an execution trace, and sends that trace back to the frontend in JSON format.
+5. The frontend switches to a visualization display, parses the execution trace, and renders the appropriate stack frames, heap objects, and pointers.
+6. When the user interacts with the frontend by stepping through execution points, the frontend renders the proper data structures **without** making another subsequent call to the backend.
+
+All relevant files are located in `OnlinePythonTutor/v3/`, since v3 is the currently-active version.
+
+The frontend consists of:
+```
+visualize.html
+css/opt-frontend.css
+js/opt-frontend.js
+css/pytutor.css
+js/pytutor.js
+<a bunch of auxiliary css and js files such as libraries>
+```
+
+`pytutor.[js|css]` contain the bulk of the OPT frontend code. In theory, you should be able to **embed** an
+OPT visualization into any webpage with one line of JavaScript that looks like:
+
+```javascript
+var v = new ExecutionVisualizer(domRoot, traceFromBackend, optionalParams);
+```
+
+Thus, the design of `pytutor.[js|css]` is meant to be as modular as possible, which means abstracting
+everything in an `ExecutionVisualizer` class. This way, you can create multiple visualizer objects
+to embed on the same webpage without them interfering with one another.
+
+`opt-frontend.[js|css]` contain code that is specific to the `visualize.html` page and doesn't make sense for, say,
+embedding OPT visualizations into other webpages.
+
+The backend consists of:
+```
+pg_logger.py  - the main entry point to the OPT backend
+pg_encoder.py - encodes the trace format into JSON to send to frontend
+generate_json_trace.py - script to test the backend independent of the frontend
+app.yaml, pythontutor.py - files for deploying on Google App Engine
+web_exec.py - example CGI script for deploying backend on CGI-enabled webservers
+```        
+
+The backend works with both Python 2 and 3. (Other language backends are located in [v4-cokapi/](https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi), not in v3/)
+
+
+## Hacking the backend
+
+To modify the Python backend, you will mainly need to understand `pg_logger.py` and `pg_encoder.py`.
+
+
+### Two quick tips for starters
+
+Since the backend's details might change, rather than documenting every last detail, I'd rather equip you with
+the knowledge needed to experiment with the code yourself, since that knowledge is less likely to get outdated.
+
+First, run `generate_json_trace.py` to see the trace that the backend generates for a given input Python program.
+This is the main way to do an "end-to-end" test on your backend modifications. For example, if you want the backend
+to process a Python program stored in `example.py`, then run:
+
+```
+python generate_json_trace.py example.py
+```
+
+Doing so will print a JSON-formatted execution trace to stdout.
+This data is exactly what the backend sends to the frontend.
+(Actually not quite: The sent trace is actually compressed to eliminate all extraneous spaces and newlines.
+But for testing purposes, I've made the trace more human-readable.)
+
+Second, when you're "print debugging" in the backend, you can't simply print to stdout, since `pg_logger.py`
+*redirects* stdout to a buffer. Instead, you need to write all of your print statements as:
+
+```python
+print >> sys.stderr, <your debug message>
+```
+        
+so that the output goes to stderr.
+
+The easiest way to debug or investigate how some part of the code works is to **insert in print statements (to stderr)
+and then run `generate_json_trace.py` on small code examples**. Trust me -- being able to do this is way more
+effective than memorizing detailed documentation (which could be outdated by the time you read it).
+
+
+### Backend control flow
+
+Let's now trace through a typical backend run to get a sense of how it works.
+
+The main entry point is this function in `pg_logger.py`:
+
+```python
+def exec_script_str(script_str, cumulative_mode, finalizer_func):
+```
+
+`script_str` contains the entire string contents of the Python program for the backend to execute.
+Ignore `cumulative_mode` for now (just set it to `False`). `finalizer_func` is the function to call
+after the backend is done generating a trace.
+
+Let's look at how `generate_json_trace.py` calls `exec_script_str` (using a simplified version of its code):
+
+```python
+# simplified version of generate_json_trace.py
+import pg_logger, json
+
+def json_finalizer(input_code, output_trace):
+  ret = dict(code=input_code, trace=output_trace)
+  json_output = json.dumps(ret, indent=2)
+  print(json_output)
+
+pg_logger.exec_script_str(open("example.py").read(), False, json_finalizer)
+```
+
+In this simplified example, the script opens `example.py`, reads its contents into a string, and passes that string
+into `exec_script_str`. The finalizer function is `json_finalizer`, which takes two parameters --
+the original code from `example.py` (`input_code`) and the execution trace that it produced (`output_trace`) --
+inserts both into a dict, encodes that dict as a JSON object, and then prints that JSON object to stdout.
+That's why when you run `generate_json_trace.py`, its output is a JSON object printed to stdout.
+
+Note that if you pass in another finalizer function, then you can do other actions like postprocessing
+the output trace or saving it to a file rather than printing to stdout.
+
+Now that you know what's passed into `exec_script_str` and what comes out of it, let's dive into its guts
+to see how that all-important execution trace (`output_trace`) is produced.
+Here is the code for `exec_script_str` in `pg_logger.py`:
+
+```python
+def exec_script_str(script_str, cumulative_mode, finalizer_func):
+  logger = PGLogger(cumulative_mode, finalizer_func)
+  try:
+    logger._runscript(script_str)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    logger.finalize()
+```
+
+This code creates a `PGLogger` object then calls its `_runscript` method to run the user's program (from `example.py`),
+which is passed in as `script_str`.
+After execution finishes (possibly due to a bdb-related exception), the `finalize` method is run. This method
+does some postprocessing of the trace (`self.trace`) and then finally calls the user-supplied `finalizer_func`.
+
+`PGLogger` is a subclass of [bdb.Bdb](http://docs.python.org/library/bdb.html#bdb.Bdb),
+which is the Python standard debugger module. It stores lots of fields to record what
+is going on as it executes the program that the user passed in as `script_str`. Its `_runscript` method
+is where the action starts. This method first sets up a sandboxed environment containing a restricted
+set of builtins (`user_builtins`) and redirection for stdout (`user_stdout`), and then executes this code:
+
+```python
+try:
+  self.run(script_str, user_globals, user_globals)
+except SystemExit:
+  raise bdb.BdbQuit
+```
+
+The `self.run` method is actually [inherited from bdb.Bdb](http://docs.python.org/library/bdb.html#bdb.Bdb.run).
+It executes the contents of `script_str` in a modified global environment (`user_globals`).
+
+Ok, the debugger has just started executing the program that the user passed in (from `example.py` in our example).
+What happens now? Here's where the magic happens. Look at the methods called
+`user_call`, `user_return`, `user_exception`, and `user_line`. Again, those are all
+[inherited from bdb.Bdb](http://docs.python.org/library/bdb.html#bdb.Bdb);
+take a minute to read up on what they're supposed to do.
+
+As the user's program is running, bdb
+will pause execution at every function call, return, exception, and single-line step (most common).
+It then transfers control over to the respective handler method.
+Since `PGLogger` overrides those handler methods, it can hijack control at
+crucial points during program execution to do what it needs to do.
+
+Since `PGLogger` does similar things regardless of why execution was paused (function call, return, exception, or single-line step),
+all handlers dispatch to a giant method called `interaction`.
+
+During a call to `interaction`, the backend collects the state of the stack and all run-time data and then creates a
+trace entry (`trace_entry` dict). Then it appends `trace_entry` onto `self.trace`:
+
+```python
+self.trace.append(trace_entry)
+```
+
+Every time bdb pauses the user's program's execution and dispatches to `interaction` in `PGLogger`, one new trace
+entry is created. At the end of execution, `self.trace` contains as many trace entries as there were "steps"
+in the user's program execution. Each step more-or-less corresponds to one line being executed.
+(To guard against infinite loops, `PGLogger` terminates execution when `MAX_EXECUTED_LINES` steps have been executed.)
+
+### Execution Trace Format
+
+A lot of complicated stuff happens within `interaction` to grab a snapshot of the execution state and encode
+it into an execution trace entry. Insert a bunch of print statements (remember, to stderr) to get a sense of what's going on.
+
+In addition, I've written up a separate document describing the exact format of an execution trace:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-trace-format.md
+
+
+### Backend regression tests
+
+To run the Python backend tests, cd into `v3/tests/` and run `run-all-tests.sh` -- you will need the exact Python versions mentioned in the script itself. Run `python golden_test.py` to see individual test case options. Note that there might be minor diffs that show up on your machine, so the test suite isn't completely deterministic.
+
+
+## Hacking the frontend
+
+(TODO: write me sometime!)
diff --git a/v3/docs/embedding-HOWTO.md b/v3/docs/embedding-HOWTO.md
new file mode 100644
index 000000000..7927cbe27
--- /dev/null
+++ b/v3/docs/embedding-HOWTO.md
@@ -0,0 +1,86 @@
+# Embedding Online Python Tutor visualizations
+
+This document is a starting point for anyone who wants to embed
+Online Python Tutor (OPT) visualizations in their webpage. View it online at:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/embedding-HOWTO.md
+
+Look at the Git history to see when this document was last updated; the more time
+elapsed since that date, the more likely things are out-of-date.
+
+I'm assuming that you're competent in Python, JavaScript, command-line-fu, and Google-fu,
+and general [command-line BS](http://www.pgbovine.net/command-line-bullshittery.htm),
+so I won't do much hand-holding in these directions.
+
+This guide isn't meant to be comprehensive; you will undoubtedly still
+be confused about details after reading it, so feel free to email
+philip@pgbovine.net if you have questions.
+
+
+## iframe embedding
+
+An easy (although somewhat limited) way to embed an OPT visualization on your website is to enclose it within an [iframe](http://www.w3schools.com/tags/tag_iframe.asp).
+
+If you generate a visualization (e.g., <a href="http://pythontutor.com/visualize.html#code=x+%3D+5%0Ay+%3D+10%0Az+%3D+x+%2B+y&mode=display&cumulative=false&py=2&curInstr=3">click here</a>)
+and then click the "Generate embed code" button at the bottom of the page, the following code will be generated:
+
+```html
+<iframe width="800" height="500" frameborder="0"
+        src="http://pythontutor.com/iframe-embed.html#code=x+%3D+5%0Ay+%3D+10%0Az+%3D+x+%2B+y&cumulative=false&py=2&curInstr=3">
+</iframe>
+```
+
+If you copy-and-paste the above code into your HTML webpage, then it will embed the given visualization as an iframe.
+
+See `v3/iframe-embed-demo.html` for a working demo showing several embedded iframes ([online here](http://pythontutor.com/iframe-embed-demo.html)).
+
+
+### iframe embedding parameters
+
+You can customize the iframe's size by adjusting the `width` and `height` parameters. All other parameters are passed
+after the hash mark (`#` character) in the `src=` URL string. Note that OPT uses the hash mark rather than the usual
+question mark `?` query string. Here are the currently-supported parameters:
+
+- `code` - The Python code to visualize (mandatory: URL-encoded string)
+- `py` - Python interpreter version (mandatory: `2` for Python 2.7 or `3` for Python 3.2)
+- `verticalStack` - Set to `true` if you want the code and visualization to stack atop one another (optional)
+- `curInstr` - A (zero-indexed) integer of the execution point to directly jump to in the visualization (optional)
+- `cumulative` - Set to `true` if you want exited functions to be displayed (optional)
+
+
+
+## Direct embedding
+
+The iframe-based approach has some limitations (e.g., hard to dynamically resize the enclosing iframe,
+cannot run while offline, limited parameter choices).
+Here are instructions for a more powerful but harder-to-use alternative -- directly embedding visualizations.
+
+
+### High-Level Overview
+
+To directly embed a visualization, you:
+
+1. Run the target Python program offline to generate an execution trace, which is one (really, really long)
+string representing a JavaScript (JSON) object.
+2. Copy that long string into a JavaScript .js file.
+3. Include some other stuff in your .js file and then embed it within your HTML webpage.
+
+Note that the embedded visualization is **read-only** -- that is, the user can interact with the visualization
+by stepping forward and backward, but they cannot edit the code.
+If the user wants to click the 'Edit code' button to edit the code, then they are
+brought to the [code editor page](http://pythontutor.com/visualize.html).
+
+Also, note that the visualization is run client-side; thus, after the user loads the webpage (from the Internet
+or, say, a USB drive), they can play with the visualization without an Internet connection.
+
+Finally, multiple visualizations can be embedded in a single HTML webpage, although you need to be careful
+to redraw the SVG arrows when page elements are resized or moved.
+
+### The Nitty-Gritty
+
+Let's attempt to go [literate programming](http://en.wikipedia.org/wiki/Literate_programming) style now ... load up
+[embedding-demo.html](http://pythontutor.com/embedding-demo.html) in
+your browser to see a demo. And then view its [source code](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/embedding-demo.html) and follow the instructions there,
+which should then lead you to [`v3/embedding-demo.js`](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/embedding-demo.js).
+
+Everything you need to know should be in the demo code!
diff --git a/v3/docs/embedding-HOWTO.txt b/v3/docs/embedding-HOWTO.txt
new file mode 100644
index 000000000..49944948d
--- /dev/null
+++ b/v3/docs/embedding-HOWTO.txt
@@ -0,0 +1,4 @@
+This document has been moved to embedding-HOWTO.md
+
+View it online at:
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/embedding-HOWTO.md
diff --git a/v3/docs/html-rendering.md b/v3/docs/html-rendering.md
new file mode 100644
index 000000000..f115a2240
--- /dev/null
+++ b/v3/docs/html-rendering.md
@@ -0,0 +1,74 @@
+# HTML rendering in Online Python Tutor
+
+As of May 2013, Online Python Tutor contains an experimental magic
+`setHTML` function that lets your scripts render HTML to the canvas (and
+accompanying `setJS` and `setCSS` functions for JavaScript and CSS,
+respectively).
+
+Here is a
+<a href="http://pythontutor.com/visualize.html#code=%23+display+a+bunch+of+big+red+numbers%0AsetCSS('.bigText+%7Bfont-size%3A+80pt%3B+color%3A+red%3B%7D')%0A%0Afor+i+in+range(5)%3A%0A++++setHTML('%3Cdiv+class%3D%22bigText%22%3E%25d%3C/div%3E'+%25+i)%0A%0A%23+now+display+an+image+from+my+website%0AsetHTML('%3Cimg+src%3D%22http%3A//pgbovine.net/hacking-on-box.jpg%22/%3E')%0A&mode=display&cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=2&curInstr=0">simple example</a>
+of `setHTML` at work.
+
+Let's step through the code:
+
+
+    # display a bunch of big red numbers
+    setCSS('.bigText {font-size: 80pt; color: red;}')
+
+    for i in range(5):
+        setHTML('<div class="bigText">%d</div>' % i)
+
+    # now display an image from my website
+    setHTML('<img src="http://pgbovine.net/hacking-on-box.jpg"/>')
+
+
+The first call to `setCSS` defines a `bigText` CSS class with a giant font and red color.
+Then the code iterates through a loop five times and calls `setHTML` to set the HTML canvas
+to contain a single `div` of class `bigText` with the loop index as its contents. Finally,
+the code makes one final `setHTML` call to set the canvas to an image from my personal website.
+
+
+## Creating external modules
+
+It's really tedious to write out all of the HTML rendering code in the OPT input text box.
+Thus, the best way to take advantage of HTML rendering is to define a custom
+module to encapsulate all of the rendering code. Here is an example module:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/htmlexample_module.py
+
+This example module defines a `ColorTable` class that represents a table whose cells
+can be filled in with colors. Each time the `render_HTML` method is called, OPT
+renders the contents of the table as an HTML table whose cells are filled in with
+the respective colors.
+
+Here is
+<a href="http://pythontutor.com/visualize.html#code=from+htmlexample_module+import+ColorTable%0A%0At+%3D+ColorTable(3,+4)%0A%0At.set_color(0,+0,+'red')%0At.render_HTML()%0A%0At.set_color(1,+1,+'green')%0At.render_HTML()%0A%0At.set_color(2,+2,+'blue')%0At.render_HTML()%0A%0Afor+i+in+range(3)%3A%0A++++for+j+in+range(4)%3A%0A++++++++t.set_color(i,+j,+'gray')%0A++++++++t.render_HTML()&mode=display&cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=2&curInstr=0">an example</a>
+of this module in action:
+
+    from htmlexample_module import ColorTable
+
+    t = ColorTable(3, 4)
+
+    t.set_color(0, 0, 'red')
+    t.render_HTML()
+
+    t.set_color(1, 1, 'green')
+    t.render_HTML()
+
+    t.set_color(2, 2, 'blue')
+    t.render_HTML()
+
+    for i in range(3):
+        for j in range(4):
+            t.set_color(i, j, 'gray')
+            t.render_HTML()
+
+If you step through the code in OPT, you'll see an HTML table appearing below the code
+and getting gradually filled in with colors.
+
+To get this module working with OPT, you need to first add its filename
+(e.g., 'htmlexample_module') to the CUSTOM_MODULE_IMPORTS variable in pg_logger.py, approximately here:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/pg_logger.py#L119
+
+To create your own custom modules, simply follow the conventions I've laid out with `htmlexample_module.py`!
diff --git a/v3/docs/make_visualizations.md b/v3/docs/make_visualizations.md
new file mode 100644
index 000000000..55aeba6ca
--- /dev/null
+++ b/v3/docs/make_visualizations.md
@@ -0,0 +1,98 @@
+[This document was written by Peter Robinson (pjr@itee.uq.edu.au), the creator of make_visualizations.py]
+
+# Using make_visualizations.py to build visualization embeddings
+
+The program `make_visualizations.py` can be used to simplify the task of building visualization embeddings. The user can describe the required details as a `.json` file (a 'Makefile') and `make_visualizations.py` is a 'make' program that will build all the required visualizations and supporting bookkeeping. 
+
+For an example of how to use this program and to embed visualizations we will assume that the current working directory contains the `.html` files that will have visualizations embedded in them, that the sub-directory `examples` contains all the python files that are to be visualized and that the sub-directories `js` and `css` have been created. Further assume `$OPT` is the directory containing the OPT release.
+
+The first step is to copy across some `.js` files and `.css` files.
+
+    cp -r $OPT/js/* js
+    cp -r $OPT/css/* css
+
+The next step is to create the Makefile - say `make_viz.json` and to add the required information to the file. An example of such a file is given below. The required visualizations can be built as follows.
+
+    python $OPT/make_visualizations.py make_viz.json
+
+Calling this again will rebuild everything. Alternatively, the program can be used to build visualizations for particular `.html` files listed in `make_viz.json` by listing them at the end of the command. For example
+
+    python $OPT/make_visualizations.py make_viz.json file1.html file3.html
+
+For the example we assume the `.html` files are `file1.html`, `file2.html` and `file3.html` and that `file1.html` will have visualizations for `prog1_1.py` and `prog1_2.py`; `file2.html` will have a visualization for `prog2_1.py`; and `file3.html` will have a visualization for `prog3_1.py`. Further we assume that a local OPT server has been set up at the URL http://my.local.server/visualize.html.
+
+The following is a possible example for `make_viz.json`
+
+    {       
+     "visualizer_url": 
+           "http://my.local.server/visualize.html",
+    
+     "default_viz_config": 
+           {
+             "embeddedMode": true, 
+             "codeDivWidth": 500
+           },
+    
+     "file1.html":
+           [
+             "js/file1.js",
+             {
+                "examples/prog1_1.py":{},
+                "examples/prog1_2.py":{"codeDivWidth": 400}
+             }
+           ],
+     
+     # hash to end of line is a comment
+     
+     "file2.html":
+           [
+             "js/file2.js",
+             {
+                "examples/prog2_1.py":{}
+             }
+           ],
+    
+     "file3.html":
+           [
+             "js/file3.js",
+             {
+                "examples/prog3_1.py":{"codeDivWidth": ""}
+             }
+           ]
+    }
+
+The first entry specifies the location of the server. If this is not present, the default is http://pythontutor.com/visualize.html.
+
+The second entry is the default configuration for the visualization paramenter used for the given html files. If this is not present the visualization parameters are set to the system defaults.
+
+All other top-level entries are for the `.html` files. The information for a given `.html` file consists of a `.js` file in which to put the trace and other bookkeeping information and a dictionary containing information for each program. The key is the file and the value is for visualization parameters. Any parameters given here override the corresponding value for the parameter in `default_viz_config`. The special value of the empty string removes that parameter from `default_viz_config`. In this example, when visualizing `prog1_2.py`, the code textbox width will be reduced to 400 pixels and for `prog3_1.py`, the code textbox width will be set to the system-wide default.
+
+If you already have a visualization set up and you would like to use this approach you will need to remove the OPT dependencies before `<body>` in the `.html` file. When you then run the 'make' program it will re-introduce the dependencies in such a way that subseqent makes will replace this information with the updated information.
+
+At the end of the dependencies information injected into the `.html` file is a comment containing div entries that you can cut-and-paste into the position within the `.html` file where you would like the visualization to appear. The Makefile does not know where this is to be added and so this step needs to be done manually. Re-making this file will not remove this infomation from the body of the file. So, for example, in the header of `file3.html` you should find
+the following.
+
+    <!-- Cut and paste the following lines to the place where the visualizations are to be inserted
+    
+    <div id="prog3_1_pyDiv"></div>
+    -->
+
+
+For reference, we list the possible visualization parameters (with system-wide defaults - based on comments in `pytutor.js`) below.
+
+- heightChangeCallback: the function to call whenever the height of the visualization changes. If using the make program this is hard-wired in and can't be changed.
+- updateOutputCallback: the function to call before rendering output. Disabled for the make program.
+- executeCodeWithRawInputFunc: function to call when you want to re-execute the given program with some new user input. Disabled for the make program.
+- embeddedMode: if true, it is a shorthand for hideOutput = true, allowEditAnnotations = false (default : false)
+- startingInstruction: the trace entry to start execution at (0-indexed) (default : 0).
+- verticalStack: if true then place code display above visualization, else place side-by-side (default: false)
+- jumpToEnd: if true jump to the end of execution - the same as setting startingInstruction to the last trace entry (default:false).
+- codeDivWidth: the width of the code text window in pixels (default : 350).
+- codeDivHeight: the height of the code text window in pixels (default : 400).
+- hideOutput: hide "Program output" display (default : false).
+- editCodeBaseURL: the URL to visit when the user clicks 'Edit code'.
+- allowEditAnnotations: allow user to edit per-step annotations (default: false).
+- disableHeapNesting: if true, then render all heap objects at the top level (i.e., no nested objects) (default : true).
+- drawParentPointer: if true, then draw environment diagram parent pointers for all frames (default : true).
+- textualMemoryLabels: render references using textual memory labels rather than as jsPlumb arrows (default : true).
+- showOnlyOutputs: show only program outputs and NOT internal data structures (default : true).
diff --git a/v3/docs/opt-graphterm.md b/v3/docs/opt-graphterm.md
new file mode 100644
index 000000000..e201f593b
--- /dev/null
+++ b/v3/docs/opt-graphterm.md
@@ -0,0 +1,35 @@
+R. Saravanan from Texas A&M has integrated Online
+Python Tutor with his [GraphTerm](http://code.mindmeldr.com/graphterm/)
+project!
+
+Here is a brief message from him on how to set it up:
+
+------
+
+I teach python to undergrads and my students have enjoyed using
+PythonTutor to trace programs. I have modified PythonTutor slightly to
+work within GraphTerm, which is a graphical terminal for unix computers
+(written in python, of course!). So if you use the command line, you can
+now trace your programs visually within the terminal.
+
+To install it and run it, use the following three commands on a Mac or Linux system:
+
+    sudo easy_install graphterm
+    sudo gterm_setup              # To setup the toolchain
+    gtermserver --terminal
+
+This will run the GraphTerm server and open up a browser terminal
+window. In that window, you can `cd` to the directory containing the
+program you want to trace (say `example.py`), and then type:
+
+    gtutor example.py | gframe -f
+
+The first command outputs the HTML created by PythonTutor and the second
+command renders it within the terminal (in an iframe). Click on the X on
+the top right to end tracing. You can find more information in the
+[GraphTerm project
+page](http://code.mindmeldr.com/graphterm/start.html#code-tracing-using-python-tutor)
+
+You can see a live demo of Inline PythonTutor in this [older YouTube
+video](http://youtu.be/jmrmjC1VYsc) (about 1:20 after the start)
+
diff --git a/v3/docs/opt-tabular-view.jpg b/v3/docs/opt-tabular-view.jpg
new file mode 100644
index 000000000..fdb00a5c4
Binary files /dev/null and b/v3/docs/opt-tabular-view.jpg differ
diff --git a/v3/docs/opt-trace-format.md b/v3/docs/opt-trace-format.md
new file mode 100644
index 000000000..c1d733214
--- /dev/null
+++ b/v3/docs/opt-trace-format.md
@@ -0,0 +1,814 @@
+# Execution Trace Format
+
+This document describes the execution trace format that serves as the
+interface between the frontend and backend of Online Python Tutor
+(thereafter abbreviated as OPT).
+
+It is a starting point for anyone who wants to create a different
+backend (e.g., for another programming language) or a different frontend
+(e.g., for visually-impaired students). View it online at:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-trace-format.md
+
+Look at the Git history to see when this document was last updated; the
+more time elapsed since that date, the more likely things are
+out-of-date.
+
+I'm assuming that you're competent in Python, JavaScript, command-line-fu, and Google-fu,
+and general [command-line BS](http://www.pgbovine.net/command-line-bullshittery.htm),
+so I won't do much hand-holding in these directions.
+
+
+## Trace Overview
+
+Before reading this file, I suggest for you to first read the Overview for Developers doc:
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/developer-overview.md
+
+Pay particular attention to what `generate_json_trace.py` is and how to run it:
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/developer-overview.md#two-quick-tips-for-starters
+
+Let's start with a simple example. Create an `example.py` file with the following contents:
+```python
+x = 5
+y = 10
+z = x + y
+```
+
+Now run:
+```
+python generate_json_trace.py example.py
+```
+
+and you should see the following output:
+```javascript
+{
+  "code": "x = 5\ny = 10\nz = x + y\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "z": 15
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
+```
+
+Recall that when OPT is deployed on a webserver, the backend generates this trace and sends it to the frontend,
+where it will be turned into a visualization.
+
+[Click here](http://pythontutor.com/visualize.html#code=x+%3D+5%0Ay+%3D+10%0Az+%3D+x+%2B+y&mode=display&cumulative=false&py=2&curInstr=0)
+to see the visualization of this trace (open it in a new window if possible).
+Note that the trace object contains *all* of the information required to create this visualization.
+
+The trace is a JSON object with two fields: `code` is the string contents of the code
+to be visualized, and `trace` is the actual execution trace, which consists of a list of execution points.
+
+In the above example, `trace` is a list of four elements since there are four execution points.
+If you step through the visualization, you'll notice that there are exactly four steps, one for each
+element of the `trace` list.
+(Sometimes the frontend will filter out some redundant entries in `trace`, but a simplifying assumption
+is that `trace.length` is the number of execution steps that the frontend renders.)
+
+Ok, still with me? Let's now dig into what an individual element in `trace` looks like.
+
+## Interlude: Viewing a trace in the OPT frontend
+
+To view any trace locally on your computer without setting up a Webserver, load up [`v3/demo.html`](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/demo.html) in your browser.
+Now create a trace file called `v3/test-trace.js` containing a single trace variable set to the value of your desired trace object:
+
+```javascript
+var trace = { ... your trace object ... };
+```
+
+[Here is the example test-trace.js in the repo.](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/test-trace.js)
+
+Now reload `v3/demo.html`, and if everything works out, it will create a new visualization using the trace in the `trace`
+variable from `v3/test-trace.js`. I use this technique as a quick way of testing out what different traces look like
+without setting up a server.
+
+**If you open up your browser console, you will see the current trace entry being printed out as you step through the
+visualization, which can help you debug.**
+
+P.S. to create a trace file in the appropriate format using the default OPT Python backend, run `generate_json_trace.py` using the `--create_jsvar` option:
+
+```python
+python generate_json_trace.py --create_jsvar=trace example.py > test-trace.js
+```
+
+
+## Execution Point Objects
+
+The central type of object in a trace is an "execution point", which represents the state of the computer's (abstract)
+memory at a certain point in execution. Recall that a trace is an ordered list of execution points.
+
+The key concept to understand is that the frontend renders an execution point by simply looking at
+the contents of the corresponding execution point object, **without consulting any of its neighbors**.
+
+Ok, let's now look at the **four** execution points in our above example in order. The first point
+is what the frontend visualizes when it says "Step 1 of 3":
+
+```javascript
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }
+```
+
+This is pretty much what an "empty" execution point object looks like. `line` shows the line number of the
+line that is *about to execute*, which is line 1 in this case. And `event` is `step_line`, which indicates
+that an ordinary single-line step event is about to occur. `func_name` is the function that's currently
+executing: In this case, `<module>` is the faux name for top-level code that's not in any function.
+All of the other fields are empty, and if you look at the visualization, nothing is rendered in the "Frames"
+or "Objects" panes.
+
+Ok now let's look at the second point, which corresponds to the frontend visualization when it says
+"Step 2 of 3":
+
+```javascript
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }
+```
+
+Ok note that `line` is now 2, which means that line 2 is *about* to execute (yes, this convention is a bit confusing,
+but it's what the bdb debugger gives us). `globals` is now populated with one key-value pair: the global variable
+`x` has a value of `5`. That makes sense since we just executed line 1 (from the previous execution point),
+which was the code `x = 5`. If you look at the
+[visualization at this step](http://pythontutor.com/visualize.html#code=x+%3D+5%0Ay+%3D+10%0Az+%3D+x+%2B+y&mode=display&cumulative=false&py=2&curInstr=1),
+you'll see that `x` has been assigned to `5`.
+
+Ok let's keep marching to the next execution point, which is the one that corresponds to "Step 3 of 3"
+in the frontend:
+
+```javascript
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }
+```
+
+Now `line` is 3, because we're about to execute line 3 (we just executed lines 1 and 2). Notice that there is a
+new key-value pair in`globals` showing that `y` has been assigned to `10`. No surprises here, since we just
+executed the line `y = 10`.
+
+Ok now this is where I want to talk about `ordered_globals`, which is a list of global variables (i.e.,
+keys in `globals`) in the order that the frontend should visualize them. The backend appends variable
+names in their order of appearance throughout execution. Why is this list necessary? Because `globals`
+is an object whose keys are unsorted, so if you don't also keep an `ordered_globals` sorted list,
+then the visualization might end up being jarring. For instance, at one execution point, it might
+render `x` and then `y`, and at the next execution point, it might render `y` and then `x`, thereby
+causing the visualization to "jitter" unnecessarily. And I've found that it looks aesthetically pleasing
+when variables are sorted in their order of appearance as you step forwards through execution.
+
+Still with me? Ok, let's get to the final execution point, which corresponds to the frontend displaying
+"Program terminated" ([click here](http://pythontutor.com/visualize.html#code=x+%3D+5%0Ay+%3D+10%0Az+%3D+x+%2B+y&mode=display&cumulative=false&py=2&curInstr=3)
+to jump directly there).
+
+```javascript
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "z": 15
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "return"
+    }
+```
+
+This time, the event is a `return`, which signifies "returning" from the top-level module code (meaning the program
+has terminated). Note that now there is another new variable `z`, which is bound to `15` since `z = x + y` just executed.
+Note that, again, `ordered_globals` shows all three variables in their order of appearance.
+
+Ok, that's it for the basic tour. Next let's talk about what happens when the `heap` field isn't empty.
+
+
+## Heap Objects
+
+The previous example contained only primitive values that JSON could encode directly within the `globals` object.
+JSON natively supports numbers, strings, and boolean values (which map well to Python's "primitive" data types).
+But what happens when the user's program contains compound
+Python data types such as lists, tuples, dicts, sets, etc.?
+
+Create an `example.py` file with the following contents:
+```python
+x = [1, 2, 3]
+y = ('Alice', 'Bob', 'Cindy')
+z = {'carrot': 'vegetable', 'mouse': 'animal', 'rock': 'mineral'}
+```
+
+You should know how to generate a trace by now. The trace again contains **four** elements since there are
+four execution steps (one for the very beginning of execution plus three executed lines).
+
+"Step 1 of 3" is boring since nothing is displayed. Let's jump to "Step 2 of 3"
+(<a href="http://pythontutor.com/visualize.html#code=x+%3D+%5B1,+2,+3%5D%0Ay+%3D+('Alice',+'Bob',+'Cindy')%0Az+%3D+%7B'carrot'%3A+'vegetable',+'mouse'%3A+'animal',+'rock'%3A+'mineral'%7D%0A&mode=display&cumulative=false&py=2&curInstr=1">click here</a>)
+
+The visualization now shows `x` pointing to a list containing `[1, 2, 3]`. This is the corresponding execution
+point object:
+
+```javascript
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }
+```
+
+Note that in `globals`, `x` now refers to a `["REF", 1]` object, which means a *reference* (pointer) to a heap
+object with an ID of 1.
+
+Let's now look at `heap`, which is a mapping of heap object IDs to their contents. The current heap has one
+object with an ID of 1. That object is a list of [1, 2, 3], which is encoded in JSON as:
+
+```javascript
+["LIST", 1, 2, 3]
+```
+
+Let's skip forward to the end of execution ("Program terminated"):
+<a href="http://pythontutor.com/visualize.html#code=x+%3D+%5B1,+2,+3%5D%0Ay+%3D+('Alice',+'Bob',+'Cindy')%0Az+%3D+%7B'carrot'%3A+'vegetable',+'mouse'%3A+'animal',+'rock'%3A+'mineral'%7D%0A&mode=display&cumulative=false&py=2&curInstr=3">click here</a>
+
+Now there are three variables -- `x` points to a list, `y` points to a tuple, and `z` points to a dict.
+This execution point object is getting kinda big:
+
+```javascript
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "TUPLE", 
+          "Alice", 
+          "Bob", 
+          "Cindy"
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "carrot", 
+            "vegetable"
+          ], 
+          [
+            "mouse", 
+            "animal"
+          ], 
+          [
+            "rock", 
+            "mineral"
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+```
+
+Note that in `globals`, `x` refers to heap object 1, `y` to heap object 2, and `z` to 3. If you then look at `heap`,
+you'll see that objects 1, 2, and 3 map to the corresponding list, tuple, and dict, respectively.
+
+Look at the comments at the top of `pg_encoder.py` to learn the JSON encoding formats for various Python data types:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/pg_encoder.py
+
+The basic idea behind the encoding format is that each compound object is encoded as a JSON list
+where the first element is a string "tag" identifying its type (e.g., "LIST", "TUPLE", "DICT").
+
+## Heap-to-Heap References
+
+In the above example, the heap objects contained only primitives (numbers and strings), which can be directly
+encoded within those objects' representations in `heap`.
+
+But heap objects can themselves point to other heap objects. Let's look at the following example:
+
+```python
+c = (1, (2, None))
+d = (1, c)
+```
+
+<a href="http://pythontutor.com/visualize.html#code=c+%3D+(1,+(2,+None))%0Ad+%3D+(1,+c)&mode=display&cumulative=false&py=2&curInstr=2">Jump to the end</a> of execution and notice that:
+
+- `c` points to a tuple
+- the second element of that tuple points to another tuple
+- `d` points to a tuple whose second element points to what `c` points to
+
+Let's look at the execution point object that corresponds to this visualization:
+
+```javascript
+    {
+      "ordered_globals": [
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "c": [
+          "REF", 
+          1
+        ], 
+        "d": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+```
+
+What's going on here? Let's start with `globals` again. `c` points to heap object 1 (`["REF", 1]`), and `d` points
+to heap object 3 (`["REF", 3]`).
+
+Let's now look at `heap`. Heap object 1 is:
+
+```javascript
+["TUPLE", 1, ["REF", 2]]
+```
+
+What does this mean? It means that it represents a tuple whose first element is the number `1` and whose
+second element is a reference (pointer) to heap object 2.
+
+Ok let's look at heap object 2:
+
+```javascript
+["TUPLE", 2, null]
+```
+
+which corresponds to the Python tuple object `(2, None)`.
+
+Finally, heap object 3 (which `d` points to) is:
+
+```javascript
+["TUPLE", 1, ["REF", 1]]
+```
+
+which corresponds to the Python object `(1, c)`.
+
+The ability to put "REF" objects inside of heap objects enables an arbitrary object graph to be
+represented in the execution trace.
+
+
+## Capturing `stdout` Output
+
+The `stdout` field in an execution point object represents the sum total of all output sent to stdout
+so far during execution. For example, given this program:
+
+```python
+print 1
+print "two"
+print (3, 4, 5)
+```
+
+The complete trace object is:
+
+```javascript
+{
+  "code": "print 1\nprint \"two\"\nprint (3, 4, 5)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "1\ntwo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "1\ntwo\n(3, 4, 5)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
+```
+
+By now you should be getting pretty good at reading these objects :)
+
+Let's just focus on the `stdout` field at each execution point. Note that its contents start as an empty string
+at the beginning of execution and then grow incrementally as more stuff is printed to stdout at each
+subsequent execution point. If we grep for `stdout` in the trace, we see the following progression:
+
+```javascript
+      "stdout": "", 
+      "stdout": "1\n", 
+      "stdout": "1\ntwo\n", 
+      "stdout": "1\ntwo\n(3, 4, 5)\n", 
+```
+
+This isn't rocket science; but just be aware that `stdout` contains the cumulative contents of the stdout
+buffer up to that execution point, not only what's been printed by the most recently executed line.
+
+
+## Function Stack Frames
+
+So far our example programs contained no function calls. Let's now kick it up a notch and see an example
+with function calls:
+
+```python
+def foo(x, y, z):
+  return bar(x, y)
+  
+def bar(a, b):
+  return baz(a)
+  
+def baz(c):
+  return c
+  
+result = foo(1, 2, 3)
+```
+
+Let's jump straight to <a href="http://pythontutor.com/visualize.html#code=def+foo(x,+y,+z)%3A%0A++return+bar(x,+y)%0A++%0Adef+bar(a,+b)%3A%0A++return+baz(a)%0A++%0Adef+baz(c)%3A%0A++return+c%0A++%0Aresult+%3D+foo(1,+2,+3)%0A&mode=display&cumulative=false&py=2&curInstr=10">Step 11 of 13</a>,
+when the program is about to return from the call to `baz`.
+
+Study the visualization for a bit. Note that there are four frames currently on the stack: globals, `foo`, `bar`, and `baz`.
+Each frame consists of a name and a mapping between constituent variable names and values. There is a special
+variable called `Return value` (stored in the trace as `__return__`),
+which represents the value that `baz` is about to return to its caller.
+
+Let's now look at the execution point object corresponding to this visualization:
+
+```javascript
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar", 
+        "baz"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "c": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "c", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "bar": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "baz": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a, b)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "baz(c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+```
+
+First things first: This is a `return` event occurring on line 8 (the `return c` line in `baz`). The currently-active
+function is `baz`. There are three global variables: `foo`, `bar`, and `baz`, which all point to function objects
+on the heap.
+
+The only new kind of field is `stack_to_render`, which is (unsurprisingly) a list of stack frames to render.
+In this case, `stack_to_render` contains three elements -- the frames for `foo`, `bar`, and `baz`, in that exact order.
+The frontend simply walks down `stack_to_render` and renders each frame in a similar way that it renders global variables.
+
+Let's now zoom in on one particular frame in `stack_to_render`. Here is the frame for `bar`:
+
+```javascript
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }, 
+```
+
+For starters, `func_name` is the name of the function, and `is_highlighted` is true only if the current
+frame is the "top-most" one (telling the frontend to highlight it in a brighter color).
+
+`encoded_locals` is a mapping from local variable names to their values, similar to how `globals`
+provides a mapping from global variable names to their values.
+
+`ordered_varnames` is an ordered list of keys from `encoded_locals`, usually sorted by order of appearance
+during execution. The global analogue for this field is `ordered_globals`. (I suppose this field should be named
+`ordered_locals`, but I haven't gotten around to renaming yet.)
+
+`frame_id` is an integer that *uniquely* identifies this frame; the first function call (of *any* function) gets
+a frame ID of 1, and then subsequent calls get successively increasing frame IDs.
+
+`unique_hash` is a unique string that identifies this frame. For now, a simple way
+to construct `unique_hash` is by concatenating the frame's function name with `frame_id`.
+Note that `unique_hash` seems redundant with `frame_id`, since the latter is already unique.
+However, you'll see in the "Closures and Zombie Frames" section why `unique_hash` is required.
+
+Finally, ignore `is_parent`, `is_zombie`, and `parent_frame_id_list` for now. We'll cover those in the more advanced
+"Closures and Zombie Frames" section below.
+
+## Event types
+
+The `event` field can either be:
+
+- `step_line` - ordinary single step. most trace entries will be of this type.
+- `call` - first line during an executed function call; very important to match with corresponding `return` for visualization to work properly ... every frame should have matching `call` and `return` entries.
+- `return` - about to return from a function, usually the `__return__` value is set at this point in the proper stack frame entry.
+- `exception` and `uncaught_exception` - when an exception happens - the `exception_msg` field should be set to a reasonable error message. use `uncaught_exception` at the top-level of the tracer to indicate what happens when the user's program itself didn't catch the exception, and a regular `exception` when the user's program throws an exception (which might be caught in another part of their program). If the trace has exactly 1 entry and it's an `uncaught_exception`, then the OPT frontend doesn't switch to the visualization at all ... instead it displays a "syntax error"-like thingy in the code editor. It will highlight the faulting line, indicated by the `line` field and display `exception_msg` there. So if you want to indicate a syntax error, then create a trace with exactly ONE entry that's an `uncaught_exception`. (If there's more than one trace entry and the last one happens to be `uncaught_exception`, then right now OPT *still* won't switch to the visualization and instead issue an error message. TODO: figure out what's a more desirable behavior here.)
+- `instruction_limit_reached` - if you want to cap execution at a certain limit (e.g., 300 executed steps), issue this special event at the end. fill in the `exception_msg` field to say something like "(stopped after N steps to prevent possible infinite loop)"
+
+
+## Closures and Zombie Frames (advanced)
+
+As soon as a function becomes the parent of another function (i.e., a nested function is defined inside of it), set the `is_parent` field of its stack entry to `true`. Also change its `unique_hash` by appending `_p` to it. The reason why we want to change `unique_hash` is that we want the frontend to *refresh* its display, and d3 might not refresh if it sees that the hash is identical to the prior frame. Conceptually, we want `unique_hash` to be different for a function before and after it turns into the parent of another function since we want to display it differently.
+
+For example, when function `foo` is executing, its frame will have `is_parent=false` and `unique_hash = foo_f1` (or something similar) when its first two lines are running to define `x` and `y`, respectively. Then when its third line executes, that defines `bar` as a nested function within itself, so at that step, `foo` should have `is_parent=true` and `unique_hash = foo_f1_p` (or something similar).
+
+```python
+def foo(y):
+    x = 10
+    y = 20
+    def bar(x):
+        return x + y
+
+foo(1)
+```
+
+[TODO: talk about `parent_frame_id_list`]
+
+[TODO: talk about appending `_z` onto `unique_hash` when the frame becomes a zombie.]
+
+[TODO: IMPROVE ME!]
+
+
+# Notes: Potential optimizations
+
+The default trace format is completely unoptimized. It's designed so as to be "memoryless" -- i.e., a frontend can render an execution state by simply reading that entry and not any of its neighbors.
+
+However, the `stdout` field can often take up A LOT OF SPACE since it's "cumulative" -- i.e., at each step, `stdout` represents the entire contents of the `stdout` buffer, not simply what's been printed out in the current step. Thus, it suffers from N^2 space explosions. Even a simple program like this one prints out an ENORMOUS amount to stdout:
+
+```python
+choices = ['pizza', 'pasta', 'salad', 'nachos']
+for i in enumerate(choices):
+    print choices # if you comment this out, the trace is much smaller
+    choices.append(i)
+```
+
+Thus, this is one target for optimization if deemed necessary down the line. However, I'm hesitant to optimize the trace since it makes trace-handling code in the frontend and backend more complicated :/
diff --git a/v3/docs/project-ideas.md b/v3/docs/project-ideas.md
new file mode 100644
index 000000000..bc723adec
--- /dev/null
+++ b/v3/docs/project-ideas.md
@@ -0,0 +1,428 @@
+# Project Ideas
+
+This (messy!) document provides an overview of some project ideas for extending
+Online Python Tutor (thereafter abbreviated as OPT). View it online at:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/project-ideas.md
+
+Look at the Git history to see when this document was last updated; the more time
+elapsed since that date, the more likely things are out-of-date.
+
+Email philip@pgbovine.net if you're interested in working on anything
+here, or if you have other project ideas.
+
+
+## Stylistic
+
+### Beautiful print-outs of OPT visualizations
+
+A lot of instructors want to print out their OPT visualizations to make handouts or lecture notes
+for students.
+However, the default CSS is optimized for on-screen viewing and not for printing,
+so when you try to print the diagrams, they look ugly and unreadable.
+
+The project involves creating a custom CSS optimized for printing, especially on black-and-white printers.
+Here is an example how-to guide to get started creating a CSS print style sheet ...
+http://coding.smashingmagazine.com/2011/11/24/how-to-set-up-a-print-style-sheet/
+
+Another idea is to get OPT to output SVG, PDF, or another
+printer-friendly format.
+
+
+### Responsive web design for OPT UI
+
+This is a good project for someone interested in visual and web design.
+
+Implement the principles of [responsive web design](http://en.wikipedia.org/wiki/Responsive_Web_Design)
+so that OPT visualizations (and the surrounding user interface) look good on displays of many different sizes
+ranging from smartphones to tablets to laptops to giant desktop monitors.
+
+
+## Frontend
+
+### IPython (Jupyter) Notebook integration
+
+It would be awesome to integrate OPT with the [IPython Notebook](http://ipython.org/notebook.html) so that visualizations
+can be displayed inline within a notebook using, say, a `%visualize` magic keyword.
+
+In late 2012, I started messing around with a prototype but didn't get too far.
+
+Sep 2013: I've created a first prototype integrating the [IPython shell with OPT](https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/opt-ipy.py) but not the notebook yet.
+
+
+### Rich user input widgets
+
+Right now Online Python Tutor takes only code as input. However, it would be great to create widgets that allow
+the user to input data into their code. That way, they can visualize the same code executing on different data
+without changing the code. Currently, the only way to do this is to
+"hard-code" the input data as global constants, which is cumbersome.
+
+Here are some examples of input widgets:
+
+- Text input widget to simulate stdin. This could be used with raw_input()/input()
+
+- Interactive widget to draw mathematical graphs (e.g., nodes and edges); useful for visualizing graph/tree manipulation algorithms
+- A 2-D canvas where the user can draw points and lines in a coordinate system; useful for visualizing simple computational geometry algorithms
+- A 2-D matrix of numbers or colored blocks for, say, a PacMan world
+- Drag and drop an image; useful for visualizing image manipulation algorithms
+- A text box that represents a file on the filesystem. Imagine a web-based I/O simulator where there would be a text box simulating a file object, and then I/O calls such as open, readline, etc. would be intercepted and visualized as iterating (pointing) to the file object one line at a time, reading each line into a string, etc. Writing into a file can also be visualized in this way too. And seeking, overwriting, appending, etc.
+
+
+### Custom data structure visualizations
+
+Right now Online Python Tutor can render only basic Python data structures.
+
+While this is sufficient for teaching introductory CS courses, intermediate and advanced CS students must learn
+algorithms involving more sophisticated data structures such as binary trees and graphs.
+The goal of this project is to create a set of effective custom renderers for data structures
+such as:
+
+- trees (maybe see [twyg library](http://www.johnnovak.net/twyg/quickstart/) for inspiration? or GraphViz, or even d3?)
+- graphs
+- numerical matrices
+- simple 2D graphical worlds (e.g., for Pac-Man or Conway’s Game of Life)
+- rendering lists of numbers as bar/line graphs, charts, and other quantitative data visualizations (e.g., using Google Charts API)
+- file objects
+- DSL components such as logic gates for a logic simulator written in Python, or proof trees for formal logic courses
+- compiler data structures such as parser states, parse tables, AST construction, code generators, etc.
+- relational algebra diagrams for database courses
+- embedded image files (e.g., inline PNG images) to visualize Guzdial et al.'s [Media Computation](http://coweb.cc.gatech.edu/mediaComp-teach) algorithms online
+
+These renderers will make Online Python Tutor useful in a far larger variety of CS courses and online textbooks
+beyond CS0/CS1 sorts of intro classes.
+
+One ultimate goal is to make OPT capable of visualizing classic AI, algorithm, and compiler textbook algorithms
+that otherwise would need to be tediously built as one-off special-case visualizations.
+
+From an email excerpt in May 2013: {
+I recently added a feature to Online Python Tutor (OPT) that enables user programs to output HTML/CSS/JS, in addition to printing to stdout. Thus, if a program calls html_output(" ... "), when OPT steps over that line, it will render the HTML string in a div. This makes it possible to generate a wide array of visualizations in pure Python (by simply constructing strings that represent legal HTML/CSS/JS).
+
+For the file I/O example, I can imagine creating a special File class that implements "file-like" stream I/O methods. Then the user program might look like:
+
+    import VisualFile
+    f = VisualFile(<string contents of the file>)
+    for line in open(f):
+        <parse line>
+
+
+The class definition of VisualFile includes the proper HTML-generation code to render a pretty HTML representation of the file's contents. And when methods iterate over the file, it can render an HTML representation with certain lines or characters highlighted to represent, say, the current file pointer position, etc.
+}
+
+
+There are (at least) two main ways to implement this feature:
+
+- Add custom data types to the trace and have the frontend render them
+  specially using JS visualization libraries such as d3.
+
+- Take advantage of OPT's (still-undocumented) ability to print
+  arbitrary HTML/CSS/JS to the canvas (just like how it can print stdout
+  output to a text box). This enables us to create custom data structure classes
+  with printHTML() methods that print their graphical representation to
+  the web page canvas. The dream here is to be able to write pure-Python modules for
+  each custom data type, which can "pretty-print" as HTML/CSS/JS.
+
+### Holistic tabular view
+
+Right now OPT displays one state at a time. For simple algorithms, students often find it helpful
+to have the entire state displayed in a table, and will manually insert in `print` statements like so:
+
+    i = 0
+    numbers = []
+    while i < 6:
+      print 'At the top i is %d' % i
+      numbers.append(i)
+      i = i + 1
+      print 'Numbers now: ', numbers
+      print 'At the bottom i is %d' % i
+
+
+Question: Can we augment OPT to automatically display this sort of "cumulative tabular view"?
+All of the data is right there in the trace; it's just a matter of visualizing it sensibly.
+
+For instance (this output is faked, so it's not accurate):
+
+       i       numbers             code executed
+      -------------------------------------------
+       0       [0]                 while i < 6:
+       1       [0, 1]                i  = i + 1
+       2       [0, 1, 2]           while i < 6:
+       3       [0, 1, 2, 3]          i  = i + 1
+       4       [0, 1, 2, 3, 4]
+
+In this case, the execution step slider under the code now highlights rows in the table as the
+user scrubs through the slider; cool!
+
+The obvious challenge here is scalabiilty, and what happens when there are multiple frames.
+
+Some ideas include:
+- having the user manually annotate (in, say, a docstring) which variables to print in the table
+- only printing the table for one frame at a time
+- or maybe displaying nesting frames
+
+2014-04-18: brainstorming on whiteboard
+
+![tabular view](opt-tabular-view.jpg)
+
+One interesting visual element is to bold or color values when they change, to draw the viewer's eye
+to changes. In this way, it turns the OPT trace into more of a data visualization to focus on how data
+changes over time.
+
+
+### Custom rendering API and plugin system
+
+Right now Online Python Tutor renders Python data structures in a single, fixed way.
+However, different instructors have different preferences for how they want certain objects to render
+on-screen (and argue passionately for their specific tastes).
+There is currently no way for them to specify these custom rendering schemes without mucking around with
+intricate JavaScript code in the frontend.
+
+The goal of this project is to create a clean API and plugin architecture so that JavaScript-savvy instructors
+can easily create custom renderers.
+
+The ultimate goal here is to completely replace one-off custom algorithm visualizations, whiteboard doodles,
+and ad-hoc PowerPoint slide deck animations of CS concepts.
+
+
+### Annotations for simplifying visualizations
+
+Right now OPT visualizes "everything" about program execution. However, that can easily lead to visual overload.
+Let's think about implementing annotations to selectively show/hide different parts of execution, so that instructors
+and students can hone in on what they find interesting. Examples:
+
+- annotate functions to trace/skip
+- annotate data structures (or parts) to show/hide
+- selectively expand or collapse data structure visualizations, which is useful for giant structures
+- line-based breakpoints (currently implemented as a hack by puttin `# break` at the end of a line)
+- conditional breakpoints
+
+Implementing annotations as ordinary code comments (rather than using a specialized UI) is elegant
+because the instructor's code examples are self-contained in plain text and easily archivable outside of OPT.
+
+As a concrete use case, think about how to "clean up" the display of object-oriented programs.
+Right now OPT naively visualizes all the steps that the Python interpreter takes when executing an
+object-oriented program, which leads to all sorts of extraneous variables, frames, and pointers
+lying around.
+
+<a href="http://pythontutor.com/visualize.html#code=%23+Inheritance+-+object-oriented+programming+intro%0A%23+Adapted+from+MIT+6.01+course+notes+(Section+3.5)%0A%23+http%3A//mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf%0A%0Aclass+Staff601%3A%0A++++course+%3D+'6.01'%0A++++building+%3D+34%0A++++room+%3D+501%0A%0A++++def+giveRaise(self,+percentage)%3A%0A++++++++self.salary+%3D+self.salary+%2B+self.salary+*+percentage%0A%0Aclass+Prof601(Staff601)%3A%0A++++salary+%3D+100000%0A%0A++++def+__init__(self,+name,+age)%3A%0A++++++++self.name+%3D+name%0A++++++++self.giveRaise((age+-+18)+*+0.03)%0A%0A++++def+salutation(self)%3A%0A++++++++return+self.role+%2B+'+'+%2B+self.name%0A%0Apat+%3D+Prof601('Pat',+60)&mode=display&cumulative=false&py=2&curInstr=16">Click here for an example.</a>
+
+Think about how annotations can "clean up" such a big and hairy visualization.
+
+
+### Semantic zooming and other visual customizations
+
+Right now OPT has only a limited number of ways to display visualizations, mostly set at the time
+the "Visualize Execution" button is pressed.
+
+First, push some of the relevant options back to the visualizer UI itself, so they can be toggled
+on a live visualization.
+
+Next, think about "semantic zooming" -- i.e., displaying different levels of granularity and focus
+targeted toward different user audiences. For instance, fully expanding all the data structures
+up-front might overwhelm beginners, so maybe start with them collapsed and then allow the user
+to zoom in to expand them. Or maybe even "zooming out" to the point where data structures are
+just rendered as plain-text (e.g., a list as `[1, 2, ..., 100]`, to take the focus off the heap details).
+
+Semantic zooming will help improve the "visual scalability" of the visualizations.
+
+
+### Web-based authoring environment
+
+With a proper Web-based authoring environment, teachers and students can use
+Online Python Tutor visualizations as the basis for annotated examples,
+programming exercises, and quizzes.
+
+As a start, I've implemented a prototype of "annotation bubbles" for fine-grained annotation of visualization elements:
+
+![annotation bubbles](../opt-annotations.png)
+
+[Try a mock-up here!](http://pythontutor.com/commentary-bubbles-demo.html)
+
+
+**Annotated code visualizations**:
+
+- Teachers could use it as a place to put their code examples and mini-lessons (so that they’re persistent, rather than sending out a bunch of gross URLs)
+  - Lesson text can be fine-grained -- e.g., specific text to accompany each execution point, or annotations atop individual objects.
+    - see the above screenshot for "annotation bubbles" prototype to label individual visualization elements
+  - Think about what asides or remarks would a teacher/mentor SAY OUT LOUD when stepping through code with a student/mentee. Those are probably the kinds of commentary that you'd want to put inside of visualizations.
+- Students could use it as a Stackoverflow-like forum for asking questions
+  - Potentially powerful use case in MOOCs where students can directly annotate visualizations while debugging and then fire off a question to a discussion forum (with all required context). Again, OPT will be embedded within a larger MOOC courseware environment and be a segue into discussion forums.
+  - With a lightweight authoring environment, OPT can be used for embedding read-write visualizations. When a student is viewing code visualizations embedded within a textbook or lesson, they can mark annotations for parts they don’t understand and then send off the link to the course staff or discussion forum. So in essence, they’re interacting with the visualization rather than just passively consuming it.
+
+
+**Exercises/quizzes**: Since we have rich visualizations and interactivity at our disposal,
+we can come up with new forms of exercises that are more engaging than simply
+"write a function that does X and then passes these 10 unit tests."
+For example, one could imagine putting in blank slots as the user steps through the visualization,
+and the user would need to fill in those slots with the appropriate values. (There is already a
+not-yet-documented prototype of these sorts of pop-up questions, done by Brad Miller.)
+
+
+### Visualizing orders of growth
+
+Think about how to convey orders of growth of algorithms across data sets of varying sizes.
+
+Notes from Peter N.: {
+Peter suggested augmenting special data structure classes with callback hooks to the visualizer (like __str__ on steroids). This allows the visualizer to gracefully skip steps of the yucky internals of a data structure while just stepping through the significant parts. You can imagine instrumenting an Array class and visualizing compares, swaps, etc. for sorting algorithms.
+
+"Third, it would also be great to have a plot API, to plot the runtimes (or some other stat) as a function of input size N."
+
+"Fourth, while I have seen other algorithm systems where they annotate the code (by putting in annotations that say @step or something), I think we can get away without it.  For example, if the problem is sorting a list of integers, don't annotate the algorithm: just pass it an input that consists not of a list of ints, but rather an annotaed list of annotated ints.  An annotated lists increments a counter for every __getitem__ and __setitem__, and an annotated int increments a counter for every __lt__ and the like.  It won't survive malicious attacks, but it will work for all but the actively uncooperative users."
+
+We also talked about visualizing orders of growth of code, such as loops, nested loops, etc. by visualizing how many times things execute and then how that changes as your input size changes.
+}
+
+
+## Backend
+
+### Shared visualization sessions
+
+My main high-level vision for where to take the shared editing is the following:
+
+1. The instructor tells students to join a shared session.
+2. The instructor starts "driving" and typing code in the shared session. students watch along.
+3. At any time, a student can click a "detach" button and detach his/her session from the teacher. Then the session acts just like regular Online Python Tutor.
+4. At any time, a student can "reattach" to the shared session and follow the instructor again.
+
+The basic idea here is that students can follow along with an instructor but then "detach" at anytime to try out their own variations and experiments without interfering with other people's sessions.
+
+A related point/question is: what happens if two people try to simultaneously edit? i assume that they clobber each other's changes, right? in that case, it might be good to designate only ONE person who can edit, and everyone else just watches. or else a mischievous student can just delete everyone's code. of course, you can also have another "free-for-all" mode where everyone can edit.
+
+
+Another take on this idea:
+Adding real-time concurrent editing to these visualizations enables students to work together and tutor
+one another while physically separated. A shared workspace can also be useful during both physical and
+virtual lectures: As the instructor is lecturing using code visualizations, students can follow along by
+viewing those same running examples on their laptops. At any point when curious or confused, students can
+instantly diverge from the live example and try out their own variants
+on-the-fly in private; they can then sync back to the "live feed" at any time. Students can also text
+chat with one another about the lecture, all within the context of the live lecture materials. If students
+opt-in to allowing the instructor to access such interaction data, then that could "close the loop" and
+help the instructor improve future lectures. For instance, if 80% of students are silently diverging from
+the live example at a certain point in lecture, then perhaps that part requires further clarification.
+
+
+Watch this [YouTube video demo](http://www.youtube.com/watch?v=y3sVN7uaxDM) for an example of shared sessions.
+
+
+### Visualizing different programming languages
+
+This project is great for someone who likes to hack on language implementations and runtimes.
+
+The OPT frontend can visualize programs written in any language, not just Python.
+This project involves creating a backend for another language.
+All the backend needs to do is to generate an execution trace in the following format:
+
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-trace-format.md
+
+And the OPT frontend should be able to visualize it!
+
+
+### Skulpt (Python-in-JavaScript) backend
+
+[This idea is good as a proof-of-concept, but probably not practical for deployment; I strongly belive in running the real language runtimes on the server rather than a JS emulation. One exception is if we can get the real runtimes compiled to JS using Emscripten or something, so that they run in the browser. But for now, that's not really practical due to libraries and other external dependencies.]
+
+This project is appropriate for someone with advanced knowledge of hacking a Python interpreter
+who is willing to make a substantive time commitment.
+
+Right now the OPT backend runs Python code on the server, but it would be super-cool to create a "backend"
+that runs entirely in the browser. Modifying Skulpt -- http://www.skulpt.org/ -- is the leading contender here,
+since I am in touch with its main developers.
+
+The basic idea is to use Skulpt to generate a JavaScript trace object (all within the web browser without
+a server call) and then construct a new ExecutionVisualizer with that trace object as a parameter.
+Read "Direct embedding" and the associated code for more detailed info:
+https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/embedding-HOWTO.md#direct-embedding
+
+
+Main Advantages:
+  - Enables fine-grained tracing of expression and sub-expression evaluation, which has clear pedagogical benefits; right now OPT can only single-step over one line at a time since it relies on the Python bdb debugger.
+  - Enables an interactive REPL that incrementally takes in user inputs rather than just executing batch programs; this can lead to better interactivity and responsiveness.
+  - Supports on-demand evaluation and in-memory storage of (relatively) large data structures such as a 100,000-element dictionary for a spell checker program; right now OPT must send that giant dictionary in a trace (encoded in an inefficient format).
+  - Works in "offline mode" for students in regions without reliable Internet access
+  - Enables on-the-fly editing of data by clicking on and editing the visualized objects (since they're just JavaScript objects) ... Smalltalk style :)
+  - Might enable [Bret-Victor-esque](http://vimeo.com/36579366) "live coding" where the display updates nearly instantaneously as you are coding
+
+From an OPT user:
+"The second idea came about when teaching about return values, but it applies to any "compound" expression that is more than a single function call or assignment of a literal to a variable.  I often find myself showing how Python processes a statement like "x = len(s) + 1" by showing how individual pieces are computed sequentially.  Right now, OPT treats that as a single, atomic line, so students don't see clearly how it first calls len(s), "replaces" that with its return value, performs the addition, and then stores the result of that into x.  I draw things like this on the board with underlining and arrows (e.g., "len(s)" is underlined, with an arrow pointing down to its return value) to show where data goes and how everything is evaluated.  I expect that could be automated and displayed in something like OPT.  I'm not sure I'm being clear, but I hope that makes some sense.  I recognize that this doesn't fit that well into the current model, which is focused on one step being one line of code, so it may be a bit of a pipe-dream."
+
+Tips & Tricks:
+  - From Brad Miller: http://blog.bonelakesoftware.com/2011/03/adding-module-to-skulpt.html and http://blog.bonelakesoftware.com/2011/02/python-in-your-browser-in-javascript.html
+  - From Scott Graham, when I asked him whether Skulpt implements Python 2 or 3: “Mostly 2-ish. Some object hierarchy things take after 3's simplified semantics.”
+
+Dec 2012: Brython -- http://www.brython.info/index_en.html -- might also be a contender here, since it supports lots of Python 3 (except for OOP, lambdas, exceptions, and generators, afaik).
+
+May 2013: In the experience of Python veterans, the main caveat with targeting one of these alternative Python implementations is that they don't support the full ("official") Python language.
+Thus, users might be frustrated that code they type into this tutor doesn't run exactly like code they type into the official Python interpreter.
+That said, though, a Skulpt implementation would still be useful, as long as users understand its limitations and caveats, and that it doesn't support the full Python language in all of its glory (or its weird edge-case behaviors).
+
+Nov 2013: Currently, the only way to get the official CPython in JS is to use https://github.com/replit/empythoned,
+which is used by the more general https://github.com/replit/jsrepl and https://github.com/replit/repl.it projects.
+However, handling `stdin` is really kludgy and works well only on Chrome/Safari ... kinda works in Firefox, and not at all in IE: https://github.com/replit/jsrepl#standard-input-hacks
+And it's unclear how to get the CPython code to communicate with the custom JS viz code ... so this is still not a shoo-in yet :/ The technology is still not there, ugh!
+
+
+### Hack CPython to enable sub-expression-level tracing
+
+Right now OPT uses [bdb](http://docs.python.org/2/library/bdb.html) to trace at line-level granularity.
+However, lots of users want sub-expression-level granularity, such as this user:
+
+"The second idea came about when teaching about return values, but it applies to any "compound" expression that is more than a single function call or assignment of a literal to a variable.  I often find myself showing how Python processes a statement like "x = len(s) + 1" by showing how individual pieces are computed sequentially.  Right now, OPT treats that as a single, atomic line, so students don't see clearly how it first calls len(s), "replaces" that with its return value, performs the addition, and then stores the result of that into x.  I draw things like this on the board with underlining and arrows (e.g., "len(s)" is underlined, with an arrow pointing down to its return value) to show where data goes and how everything is evaluated.  I expect that could be automated and displayed in something like OPT.  I'm not sure I'm being clear, but I hope that makes some sense.  I recognize that this doesn't fit that well into the current model, which is focused on one step being one line of code, so it may be a bit of a pipe-dream."
+
+One way to get finer-grained tracing is to use Skulpt (see above), but the problem with Skulpt is that it's not
+"real" Python (i.e., CPython), so that code typed into OPT won't run exactly the same as code run by CPython.
+
+The goal of this project is to hack CPython all the way from the compiler frontend to the bytecode generator
+and debugger hooks to add **fine-grained** information into the bytecode to enable sub-expression-level tracing.
+I envision the result as being a custom CPython interpreter that I can compile and run on the OPT server, which
+will run real CPython code, albeit with bytecode that's enhanced with extra metadata. The resulting interpreter
+should be compatible with pure-Python modules, and hopefully compatible with C modules as well, as long as `PyObject`
+and other internal guts aren't altered too much. But I don't care a ton about C module compatibility since OPT
+doesn't really use C modules. (Update in July 2013 -- it seems like hacks to CPython core data structures are
+intrusive enough to preclude C module object compatibility. But that's not a big deal.)
+
+
+#### Early Prototype (July 2013) - now deprecated
+
+In early July 2013, I made some initial steps toward this goal as a proof-of-concept and am
+encouraged by my findings so far. See the underlying [Py2crazy](https://github.com/pgbovine/Py2crazy/) project for more details.
+
+In short, I think that with enough elbow grease to hack on CPython innards,
+you can get pretty good line/column number information into bytecodes;
+then Online Python Tutor can do much finer-grained stepping within expressions.
+
+Line-level stepping is too coarse, and bytecode-level might be too fine-grained;
+so I imagine that with some good filtering heuristics, we can hit a sweet spot of
+stepping at a level that instructors like. In particular, lots of bytecodes are executed for
+loading constants when initializing, say, a list; those can probably be skipped since
+they're un-interesting.
+
+
+### Offline mode for use as a production debugger
+
+From a reader comment: "As a teaching tool it is invaluable, not only for teaching python, but for programming in general (what is going on in memory...).
+I've actively used it to debug / trace short pieces of code. Any chance of having it offline (and without the limitations of an online tool like the inability to load all modules)? That would make a perfect pdb visualization tool."
+
+You could imagine running a webserver on localhost and using OPT as a graphical frontend for pdb; interesting idea!
+
+Notes from an email I sent on 2012-10-24: {
+
+One possible offline application is to use OPT as a visual debugger for pdb (http://docs.python.org/library/pdb.html). The use case here would be:
+
+1.) The user launches a special version of pdb augmented with OPT.
+2.) The user types in some Python command to visualize.
+3.) pdb starts a local webserver and pops up a web browser window.
+4.) The visualization appears in the web browser window, and the user can interact with it.
+
+Actually, now that I think about it, you can start even simpler without pdb. Here is an even simpler starting point:
+
+1.) The user writes some code to visualize in a file on his/her computer.
+2.) The user runs a special Python script that runs OPT on that file, launches a local webserver, and pops open a web browser window.
+3.) The visualization appears in the web browser window.
+
+Ok, that seems simpler as a starting point, and it will still teach you about local webservers and interfacing between the OPT backend and frontend.
+
+Then comes the question of why this offline mode might be useful (beyond being a good learning exercise). After all, just by following the directions in the developer overview docs, you've essentially set up OPT to run offline without an Internet connection. So my plan above doesn't give you any extra functionality. However, I think the potential lies in integrating with a real debugger such as pdb, so that you can run large Python programs, pause execution, and then visualize selected data structures (rather than all data structures in the program, which can get overwhelming).
+
+}
+
+Ha, I guess you can call this **"Offline Python Tutor"**!
diff --git a/v3/docs/user-FAQ.md b/v3/docs/user-FAQ.md
new file mode 100644
index 000000000..d4839b5ad
--- /dev/null
+++ b/v3/docs/user-FAQ.md
@@ -0,0 +1,37 @@
+# Frequently Asked Questions from users of Online Python Tutor
+
+Email philip@pgbovine.net if you have a question that isn't addressed here.
+
+
+#### I thought all objects in Python are (conceptually) on the heap; why does Online Python Tutor render primitive values (e.g., numbers, strings) inside of stack frames?
+
+This was a design decision made to keep the display less cluttered;
+if we were truly faithful to Python's semantics, that would result in far too many arrows (pointers) being drawn.
+However, note that since primitives are **immutable** and thus behave identically regardless of aliasing,
+it doesn't matter whether they're rendered in the stack or heap.
+
+Update on 2013-01-06: I've just added a drop-down menu option with two choices:
+"inline primitives and nested objects" versus "render all objects on the heap".
+If you want to render all objects on the heap, select the latter option.
+To avoid too many arrows being drawn, also toggle the "draw references using arrows" option
+to "use text labels for references".
+
+
+#### I don't like your default toggle options. Can I set different defaults?
+
+Of course! Toggle options are customizable via the query string. Here are the default settings:
+
+http://pythontutor.com/visualize.html#cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&showOnlyOutputs=false&py=2
+
+For example, if you want to default to Python 3, visit:
+http://pythontutor.com/visualize.html#&py=3
+
+Or if you want to render all objects on the heap and use text label references, visit:
+http://pythontutor.com/visualize.html#heapPrimitives=true&textReferences=true
+
+The possibilities are endless! (or 2^6 or something.)
+
+
+#### Did you know that stepping through code with generators looks weird when "display frames of exited functions" is selected?
+
+Yep, this is a known bug, but sadly the fix isn't straightforward at the moment.
diff --git a/v3/embedding-demo.html b/v3/embedding-demo.html
new file mode 100644
index 000000000..eca7b0fee
--- /dev/null
+++ b/v3/embedding-demo.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <title>Online Python Tutor embedding demo</title>
+
+<!-- dependencies for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.simplemodal.js"></script> <!-- for questions -->
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors 
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+<link type="text/css" href="css/basic.css" rel="stylesheet" />
+
+<!-- Python Tutor frontend code and styles -->
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+
+<!-- This JavaScript file contains the demo code - READ IT!!!
+     (Include this file AFTER all of its dependencies.)
+-->
+<script type="text/javascript" src="embedding-demo.js"></script>
+
+</head>
+
+<body>
+  <!-- This demo shows three visualizations, each embedded within a div ... -->
+  <p>Recursive list sum (from <a href="http://pythontutor.com">pythontutor.com</a> home page):</p>
+  <div id="listSumDiv"></div>
+
+  <p>Towers of Hanoi:</p>
+  <div id="hanoiDiv"></div>
+
+  <p>Happy Birthday:</p>
+  <div id="happyDiv"></div>
+</body>
+</html>
diff --git a/v3/embedding-demo.js b/v3/embedding-demo.js
new file mode 100644
index 000000000..9e8908bd6
--- /dev/null
+++ b/v3/embedding-demo.js
@@ -0,0 +1,95 @@
+// To embed Online Python Tutor visualizations into embedding-demo.html ...
+
+// 1. Run generate_json_trace.py to generate execution traces as JavaScript variables.
+//    (WARNING: The following lines are VERY LONG.)
+
+// Run:
+//   python generate_json_trace.py --create_jsvar=listSumTrace tests/backend-tests/list_sum.txt
+// and copy-and-paste the output line into here:
+var listSumTrace = {"code": "def listSum(numbers):\n  if not numbers:\n    return 0\n  else:\n    (f, rest) = numbers\n    return f + listSum(rest)\n\nmyList = (1, (2, (3, None)))\ntotal = listSum(myList)\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": ["listSum"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 3, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"__return__": 0, "numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 3, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"__return__": 3, "numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"__return__": 5, "numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": 6, "numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList", "total"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"total": 6, "myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 9, "event": "return"}]};
+
+// Do the same for
+//   python generate_json_trace.py --create_jsvar=hanoiTrace example-code/towers_of_hanoi.txt
+var hanoiTrace = {"code": "# move a stack of n disks from stack a to stack b,\n# using tmp as a temporary stack\ndef TowerOfHanoi(n, a, b, tmp):\n    if n == 1:\n        b.append(a.pop())\n    else:\n        TowerOfHanoi(n-1, a, tmp, b)\n        b.append(a.pop())\n        TowerOfHanoi(n-1, tmp, b, a)\n        \nstack1 = [4,3,2,1]\nstack2 = []\nstack3 = []\n      \n# transfer stack1 to stack3 using Tower of Hanoi rules\nTowerOfHanoi(len(stack1), stack1, stack3, stack2)\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 3, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"TowerOfHanoi": ["REF", 1]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null]}, "line": 11, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1]}, "line": 12, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"]}, "line": 13, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 16, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 4, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f4", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 4, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f4", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 4, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f4", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2, 1], "3": ["LIST"], "4": ["LIST"]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 4, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "__return__": null, "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f4", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2], "3": ["LIST", 1], "4": ["LIST"]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3, 2], "3": ["LIST", 1], "4": ["LIST"]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST", 1], "4": ["LIST", 2]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 5, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f5", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST", 1], "4": ["LIST", 2]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 5, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f5", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST", 1], "4": ["LIST", 2]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 5, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f5", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST", 1], "4": ["LIST", 2]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 5, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "__return__": null, "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f5", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST"], "4": ["LIST", 2, 1]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 3, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "__return__": null, "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f3", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST"], "4": ["LIST", 2, 1]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 3], "3": ["LIST"], "4": ["LIST", 2, 1]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 7, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f7", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 7, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f7", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 7, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f7", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3], "4": ["LIST", 2, 1]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 7, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "__return__": null, "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f7", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 1], "3": ["LIST", 3], "4": ["LIST", 2]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 1], "3": ["LIST", 3], "4": ["LIST", 2]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 1], "3": ["LIST", 3, 2], "4": ["LIST"]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 8, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f8", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 1], "3": ["LIST", 3, 2], "4": ["LIST"]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 8, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f8", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 1], "3": ["LIST", 3, 2], "4": ["LIST"]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 8, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f8", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4, 1], "3": ["LIST", 3, 2], "4": ["LIST"]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "b": ["REF", 3], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 8, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "__return__": null, "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f8", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3, 2, 1], "4": ["LIST"]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 6, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 4], "__return__": null, "b": ["REF", 3], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f6", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3, 2, 1], "4": ["LIST"]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 2, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "__return__": null, "b": ["REF", 3], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f2", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3, 2, 1], "4": ["LIST"]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 4], "3": ["LIST", 3, 2, 1], "4": ["LIST"]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 11, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f11", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 11, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f11", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 11, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f11", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2, 1], "4": ["LIST", 4]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 11, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "__return__": null, "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f11", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2], "4": ["LIST", 4, 1]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 3, 2], "4": ["LIST", 4, 1]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2], "3": ["LIST", 3], "4": ["LIST", 4, 1]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 12, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f12", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2], "3": ["LIST", 3], "4": ["LIST", 4, 1]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 12, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f12", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2], "3": ["LIST", 3], "4": ["LIST", 4, 1]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 12, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f12", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2], "3": ["LIST", 3], "4": ["LIST", 4, 1]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "b": ["REF", 2], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 12, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 4], "__return__": null, "b": ["REF", 2], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f12", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST", 3], "4": ["LIST", 4]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 10, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 3], "__return__": null, "b": ["REF", 2], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f10", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST", 3], "4": ["LIST", 4]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST", 3], "4": ["LIST", 4]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 14, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f14", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 14, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f14", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 14, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f14", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2, 1], "3": ["LIST"], "4": ["LIST", 4, 3]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 14, "encoded_locals": {"tmp": ["REF", 4], "a": ["REF", 2], "__return__": null, "b": ["REF", 3], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f14", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2], "3": ["LIST", 1], "4": ["LIST", 4, 3]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST", 2], "3": ["LIST", 1], "4": ["LIST", 4, 3]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 1], "4": ["LIST", 4, 3, 2]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 15, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f15", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 1], "4": ["LIST", 4, 3, 2]}, "line": 3, "event": "call"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 15, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f15", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 1], "4": ["LIST", 4, 3, 2]}, "line": 4, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 15, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f15", "ordered_varnames": ["n", "a", "b", "tmp"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST", 1], "4": ["LIST", 4, 3, 2]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 2}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 15, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "__return__": null, "b": ["REF", 4], "n": 1}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_jhash": "TowerOfHanoi_f15", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST"], "4": ["LIST", 4, 3, 2, 1]}, "line": 5, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "b": ["REF", 4], "n": 3}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 13, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "__return__": null, "b": ["REF", 4], "n": 2}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f13", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST"], "4": ["LIST", 4, 3, 2, 1]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "b": ["REF", 4], "n": 4}, "is_highlighted": false, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp"]}, {"frame_id": 9, "encoded_locals": {"tmp": ["REF", 2], "a": ["REF", 3], "__return__": null, "b": ["REF", 4], "n": 3}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f9", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST"], "4": ["LIST", 4, 3, 2, 1]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "TowerOfHanoi", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"tmp": ["REF", 3], "a": ["REF", 2], "__return__": null, "b": ["REF", 4], "n": 4}, "is_highlighted": true, "is_parent": false, "func_name": "TowerOfHanoi", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "TowerOfHanoi_f1", "ordered_varnames": ["n", "a", "b", "tmp", "__return__"]}], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST"], "4": ["LIST", 4, 3, 2, 1]}, "line": 9, "event": "return"}, {"ordered_globals": ["TowerOfHanoi", "stack1", "stack2", "stack3"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"stack3": ["REF", 4], "stack2": ["REF", 3], "TowerOfHanoi": ["REF", 1], "stack1": ["REF", 2]}, "heap": {"1": ["FUNCTION", "TowerOfHanoi(n, a, b, tmp)", null], "2": ["LIST"], "3": ["LIST"], "4": ["LIST", 4, 3, 2, 1]}, "line": 16, "event": "return"}]};
+
+// And finally, let's generate one last trace and copy it in here:
+//   python generate_json_trace.py --create_jsvar=happyTrace example-code/happy.txt
+var happyTrace = {"code": "# From \"Teaching with Python\" by John Zelle\ndef happy():\n    print(\"Happy Birthday to you!\")\n\ndef sing(P):\n    happy()\n    happy()\n    print(\"Happy Birthday dear \" + P + \"!\")\n    happy()\n\n# main\nsing(\"Fred\")\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 2, "event": "step_line"}, {"ordered_globals": ["happy"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 12, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "", "func_name": "sing", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": true, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 5, "event": "call"}, {"ordered_globals": ["happy", "sing"], "stdout": "", "func_name": "sing", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": true, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f2", "ordered_varnames": []}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 2, "event": "call"}, {"ordered_globals": ["happy", "sing"], "stdout": "", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 2, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f2", "ordered_varnames": []}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 3, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 2, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f2", "ordered_varnames": ["__return__"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 3, "event": "return"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\n", "func_name": "sing", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": true, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 7, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 3, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f3", "ordered_varnames": []}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 2, "event": "call"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 3, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f3", "ordered_varnames": []}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 3, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 3, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f3", "ordered_varnames": ["__return__"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 3, "event": "return"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\n", "func_name": "sing", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": true, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", "func_name": "sing", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": true, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 4, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f4", "ordered_varnames": []}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 2, "event": "call"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 4, "encoded_locals": {}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f4", "ordered_varnames": []}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 3, "event": "step_line"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", "func_name": "happy", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"P": "Fred"}, "is_highlighted": false, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P"]}, {"frame_id": 4, "encoded_locals": {"__return__": null}, "is_highlighted": true, "is_parent": false, "func_name": "happy", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "happy_f4", "ordered_varnames": ["__return__"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 3, "event": "return"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", "func_name": "sing", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": null, "P": "Fred"}, "is_highlighted": true, "is_parent": false, "func_name": "sing", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "sing_f1", "ordered_varnames": ["P", "__return__"]}], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 9, "event": "return"}, {"ordered_globals": ["happy", "sing"], "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", "func_name": "<module>", "stack_to_render": [], "globals": {"sing": ["REF", 2], "happy": ["REF", 1]}, "heap": {"1": ["FUNCTION", "happy()", null], "2": ["FUNCTION", "sing(P)", null]}, "line": 12, "event": "return"}]};
+
+
+// 2. When the HTML document finishes loading, populate the three divs
+//    (listSumDiv, hanoiDiv, happyDiv) with the visualizations
+//    corresponding to the respective traces.
+$(document).ready(function() {
+
+  // 3. Create a new ExecutionVisualizer object for each visualization.
+  //    (See js/pytutor.js for the full specs of ExecutionVisualizer.)
+  //
+  //    The basic idea is that the parent div name is passed as the first argument,
+  //    and the trace object is passed as the second argument.
+  //
+  //    The third argument contains optional parameters.
+
+  // Note that "embeddedMode: true" makes the visualizer appear more compact on-screen.
+  // editCodeBaseURL is the base URL to prepend onto the 'Edit code' link.
+
+
+  // A more subtle point is that when some div in your HTML webpage
+  // (such as a visualizer div) expands in height, it will "push down"
+  // all divs below it, but the SVG arrows rendered by jsPlumb
+  // WILL NOT MOVE. Thus, they will be in the incorrect location
+  // unless you call redrawAllConnectors().
+  //
+  // We use the "heightChangeCallback" optional parameter to force redraw
+  // of all SVG arrows of ALL visualizers, whenever the height of one changes.
+  //
+  // Alternatively, here is one jQuery plugin that you can use to detect div height changes:
+  // http://benalman.com/projects/jquery-resize-plugin/
+  //
+  // A related trick you can implement is to make a div never shrink in height once it's grown;
+  // that way, you can avoid lots of jarring jumps and (inefficient) redraws.
+
+  // Render listSumTrace inside of listSumDiv
+  var listSumVisualizer = new ExecutionVisualizer('listSumDiv', listSumTrace,
+                                                  {embeddedMode: true,
+                                                   heightChangeCallback: redrawAllVisualizerArrows,
+                                                   editCodeBaseURL: 'http://pythontutor.com/visualize.html'});
+
+  // The "startingInstruction: 15" optional parameter means to jump to step 15
+  // in the visualization when it loads. (The HTML webpage will actually display
+  // "Step 16 of 64" since indices are zero-indexed.)
+  //
+  // verticalStack means to stack the code and visualizations vertically atop one another
+  // (rather than side-by-side)
+  var hanoiVisualizer   = new ExecutionVisualizer('hanoiDiv', hanoiTrace,
+                                                  {embeddedMode: true,
+                                                   startingInstruction: 15,
+                                                   verticalStack: true,
+                                                   heightChangeCallback: redrawAllVisualizerArrows,
+                                                   editCodeBaseURL: 'http://pythontutor.com/visualize.html'});
+
+  // "embeddedMode: false" displays the full visualizer widget with the "Program Output" pane
+  // "jumpToEnd: true" means to jump to the end of execution upon loading.
+  var happyVisualizer   = new ExecutionVisualizer('happyDiv', happyTrace,
+                                                  {embeddedMode: false,
+                                                   jumpToEnd: true,
+                                                   codeDivWidth: 450,
+                                                   codeDivHeight: 150,
+                                                   // no need for heightChangeCallback since
+                                                   // this is the "bottom-most" visualizer,
+                                                   // so no arrows appear below it
+                                                   editCodeBaseURL: 'http://pythontutor.com/visualize.html'});
+
+  function redrawAllVisualizerArrows() {
+    if (listSumVisualizer) listSumVisualizer.redrawConnectors();
+    if (hanoiVisualizer) hanoiVisualizer.redrawConnectors();
+    if (happyVisualizer) happyVisualizer.redrawConnectors();
+  }
+
+
+  // Call redrawConnectors() on all visualizers whenever the window is resized,
+  // since HTML elements might have moved during a resize. The SVG arrows rendered
+  // by jsPlumb don't automatically get re-drawn in their new positions unless
+  // redrawConnectors() is called.
+  $(window).resize(redrawAllVisualizerArrows);
+});
diff --git a/v3/example-code/aliasing.golden b/v3/example-code/aliasing.golden
new file mode 100644
index 000000000..d0f3f9997
--- /dev/null
+++ b/v3/example-code/aliasing.golden
@@ -0,0 +1,2067 @@
+{
+  "code": "x = [1, 2, 3]\ny = [4, 5, 6]\nz = y\ny = x\nx = z\n\nx = [1, 2, 3] # a different [1, 2, 3] list!\ny = x\nx.append(4)\ny.append(5)\nz = [1, 2, 3, 4, 5] # a different list!\nx.append(6)\ny.append(7)\ny = \"hello\"\n\n\ndef foo(lst):\n    lst.append(\"hello\")\n    bar(lst)\n\ndef bar(myLst):\n    print(myLst)\n\nfoo(x)\nfoo(z)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          2
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing.golden_py3 b/v3/example-code/aliasing.golden_py3
new file mode 100644
index 000000000..f56be9792
--- /dev/null
+++ b/v3/example-code/aliasing.golden_py3
@@ -0,0 +1,2067 @@
+{
+  "code": "x = [1, 2, 3]\ny = [4, 5, 6]\nz = y\ny = x\nx = z\n\nx = [1, 2, 3] # a different [1, 2, 3] list!\ny = x\nx.append(4)\ny.append(5)\nz = [1, 2, 3, 4, 5] # a different list!\nx.append(6)\ny.append(7)\ny = \"hello\"\n\n\ndef foo(lst):\n    lst.append(\"hello\")\n    bar(lst)\n\ndef bar(myLst):\n    print(myLst)\n\nfoo(x)\nfoo(z)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          2
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/aliasing.txt b/v3/example-code/aliasing.txt
similarity index 54%
rename from example-code/aliasing.txt
rename to v3/example-code/aliasing.txt
index e866323d5..459b370db 100644
--- a/example-code/aliasing.txt
+++ b/v3/example-code/aliasing.txt
@@ -1,19 +1,25 @@
-# Example of aliasing
 x = [1, 2, 3]
+y = [4, 5, 6]
+z = y
+y = x
+x = z
+
+x = [1, 2, 3] # a different [1, 2, 3] list!
 y = x
 x.append(4)
 y.append(5)
-z = [1, 2, 3, 4, 5]
+z = [1, 2, 3, 4, 5] # a different list!
 x.append(6)
 y.append(7)
 y = "hello"
 
+
 def foo(lst):
     lst.append("hello")
     bar(lst)
 
 def bar(myLst):
-    print myLst
+    print(myLst)
 
 foo(x)
 foo(z)
diff --git a/v3/example-code/aliasing/aliasing1.golden b/v3/example-code/aliasing/aliasing1.golden
new file mode 100644
index 000000000..00383dd48
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing1.golden
@@ -0,0 +1,98 @@
+{
+  "code": "a = (1, (2, (3, None)))\nb = a[1]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "b": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing1.golden_py3 b/v3/example-code/aliasing/aliasing1.golden_py3
new file mode 100644
index 000000000..00383dd48
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing1.golden_py3
@@ -0,0 +1,98 @@
+{
+  "code": "a = (1, (2, (3, None)))\nb = a[1]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "b": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing1.txt b/v3/example-code/aliasing/aliasing1.txt
new file mode 100644
index 000000000..f6d9efea8
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing1.txt
@@ -0,0 +1,2 @@
+a = (1, (2, (3, None)))
+b = a[1]
diff --git a/v3/example-code/aliasing/aliasing2.golden b/v3/example-code/aliasing/aliasing2.golden
new file mode 100644
index 000000000..ab6c203f4
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing2.golden
@@ -0,0 +1,90 @@
+{
+  "code": "c = (1, (2, None))\nd = (1, c)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "c": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "c": [
+          "REF", 
+          1
+        ], 
+        "d": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing2.golden_py3 b/v3/example-code/aliasing/aliasing2.golden_py3
new file mode 100644
index 000000000..ab6c203f4
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing2.golden_py3
@@ -0,0 +1,90 @@
+{
+  "code": "c = (1, (2, None))\nd = (1, c)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "c": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "c": [
+          "REF", 
+          1
+        ], 
+        "d": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing2.txt b/v3/example-code/aliasing/aliasing2.txt
new file mode 100644
index 000000000..57984f2ff
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing2.txt
@@ -0,0 +1,2 @@
+c = (1, (2, None))
+d = (1, c)
diff --git a/v3/example-code/aliasing/aliasing3.golden b/v3/example-code/aliasing/aliasing3.golden
new file mode 100644
index 000000000..a0bded930
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing3.golden
@@ -0,0 +1,335 @@
+{
+  "code": "l1, l2, l3, l4 = 1, 2, 3, 4\n\nt1 = (l1, l2)\nt2 = (l3, l4)\nt = (t1, t2)\nu = ((1, 2), (3, 4))\nv = u[0]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "l4": 4, 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2", 
+        "t"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1, 
+        "t": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1, 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2", 
+        "t", 
+        "u", 
+        "v"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "v": [
+          "REF", 
+          5
+        ], 
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1, 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing3.golden_py3 b/v3/example-code/aliasing/aliasing3.golden_py3
new file mode 100644
index 000000000..a0bded930
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing3.golden_py3
@@ -0,0 +1,335 @@
+{
+  "code": "l1, l2, l3, l4 = 1, 2, 3, 4\n\nt1 = (l1, l2)\nt2 = (l3, l4)\nt = (t1, t2)\nu = ((1, 2), (3, 4))\nv = u[0]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "l4": 4, 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2", 
+        "t"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1, 
+        "t": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1, 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l4", 
+        "l2", 
+        "l3", 
+        "l1", 
+        "t1", 
+        "t2", 
+        "t", 
+        "u", 
+        "v"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "v": [
+          "REF", 
+          5
+        ], 
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ], 
+        "l4": 4, 
+        "l2": 2, 
+        "l3": 3, 
+        "l1": 1, 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing3.txt b/v3/example-code/aliasing/aliasing3.txt
new file mode 100644
index 000000000..fcb9e9c63
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing3.txt
@@ -0,0 +1,7 @@
+l1, l2, l3, l4 = 1, 2, 3, 4
+
+t1 = (l1, l2)
+t2 = (l3, l4)
+t = (t1, t2)
+u = ((1, 2), (3, 4))
+v = u[0]
diff --git a/v3/example-code/aliasing/aliasing4.golden b/v3/example-code/aliasing/aliasing4.golden
new file mode 100644
index 000000000..0d440f81a
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing4.golden
@@ -0,0 +1,67 @@
+{
+  "code": "x = [1, 2, 3]\nx.append(x)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing4.golden_py3 b/v3/example-code/aliasing/aliasing4.golden_py3
new file mode 100644
index 000000000..0d440f81a
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing4.golden_py3
@@ -0,0 +1,67 @@
+{
+  "code": "x = [1, 2, 3]\nx.append(x)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing4.txt b/v3/example-code/aliasing/aliasing4.txt
new file mode 100644
index 000000000..7ca952d22
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing4.txt
@@ -0,0 +1,2 @@
+x = [1, 2, 3]
+x.append(x)
diff --git a/v3/example-code/aliasing/aliasing5.golden b/v3/example-code/aliasing/aliasing5.golden
new file mode 100644
index 000000000..af82d0118
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing5.golden
@@ -0,0 +1,455 @@
+{
+  "code": "x = None\nfor i in range(5, 0, -1):\n  x = (i, x)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing5.golden_py3 b/v3/example-code/aliasing/aliasing5.golden_py3
new file mode 100644
index 000000000..af82d0118
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing5.golden_py3
@@ -0,0 +1,455 @@
+{
+  "code": "x = None\nfor i in range(5, 0, -1):\n  x = (i, x)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing5.txt b/v3/example-code/aliasing/aliasing5.txt
new file mode 100644
index 000000000..232486f7c
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing5.txt
@@ -0,0 +1,3 @@
+x = None
+for i in range(5, 0, -1):
+  x = (i, x)
diff --git a/v3/example-code/aliasing/aliasing6.golden b/v3/example-code/aliasing/aliasing6.golden
new file mode 100644
index 000000000..71b2ac9b6
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing6.golden
@@ -0,0 +1,327 @@
+{
+  "code": "# wow, this looks gross :)\nt1 = (1, 2)\nt2 = (3, 4)\nt = [t1, t2]\nu = [t, t, t]\nu[1] = u\nt[0] = u\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing6.golden_py3 b/v3/example-code/aliasing/aliasing6.golden_py3
new file mode 100644
index 000000000..71b2ac9b6
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing6.golden_py3
@@ -0,0 +1,327 @@
+{
+  "code": "# wow, this looks gross :)\nt1 = (1, 2)\nt2 = (3, 4)\nt = [t1, t2]\nu = [t, t, t]\nu[1] = u\nt[0] = u\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "t1", 
+        "t2", 
+        "t", 
+        "u"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "t2": [
+          "REF", 
+          2
+        ], 
+        "u": [
+          "REF", 
+          4
+        ], 
+        "t": [
+          "REF", 
+          3
+        ], 
+        "t1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing6.txt b/v3/example-code/aliasing/aliasing6.txt
new file mode 100644
index 000000000..5f9c1e8b5
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing6.txt
@@ -0,0 +1,7 @@
+# wow, this looks gross :)
+t1 = (1, 2)
+t2 = (3, 4)
+t = [t1, t2]
+u = [t, t, t]
+u[1] = u
+t[0] = u
diff --git a/v3/example-code/aliasing/aliasing7.golden b/v3/example-code/aliasing/aliasing7.golden
new file mode 100644
index 000000000..fc49379b4
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing7.golden
@@ -0,0 +1,248 @@
+{
+  "code": "x = (3, {'joe': 'M', 'jane': 'F'})\ny = (2, x)\nz = (1, y)\nw = (x, y, z)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "w"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          4
+        ], 
+        "w": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing7.golden_py3 b/v3/example-code/aliasing/aliasing7.golden_py3
new file mode 100644
index 000000000..fc49379b4
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing7.golden_py3
@@ -0,0 +1,248 @@
+{
+  "code": "x = (3, {'joe': 'M', 'jane': 'F'})\ny = (2, x)\nz = (1, y)\nw = (x, y, z)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "w"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          4
+        ], 
+        "w": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "jane", 
+            "F"
+          ], 
+          [
+            "joe", 
+            "M"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing7.txt b/v3/example-code/aliasing/aliasing7.txt
new file mode 100644
index 000000000..6e709dafc
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing7.txt
@@ -0,0 +1,5 @@
+x = (3, {'joe': 'M', 'jane': 'F'})
+y = (2, x)
+z = (1, y)
+w = (x, y, z)
+
diff --git a/v3/example-code/aliasing/aliasing8.golden b/v3/example-code/aliasing/aliasing8.golden
new file mode 100644
index 000000000..20ddeb5fb
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing8.golden
@@ -0,0 +1,229 @@
+{
+  "code": "# test whether heap objects \"jiggle\" between steps\nx = [1, [2, [3, None]]]\ny = [4, [5, [6, None]]]\n\nx[1][1] = y[1] # hopefully no jiggle!\n\nx = set(['apple', 'banana', 'carrot'])\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          4
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          4
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          4
+        ], 
+        "x": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "4": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "7": [
+          "SET", 
+          "carrot", 
+          "apple", 
+          "banana"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing8.golden_py3 b/v3/example-code/aliasing/aliasing8.golden_py3
new file mode 100644
index 000000000..20ddeb5fb
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing8.golden_py3
@@ -0,0 +1,229 @@
+{
+  "code": "# test whether heap objects \"jiggle\" between steps\nx = [1, [2, [3, None]]]\ny = [4, [5, [6, None]]]\n\nx[1][1] = y[1] # hopefully no jiggle!\n\nx = set(['apple', 'banana', 'carrot'])\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          4
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          4
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          4
+        ], 
+        "x": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "4": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "7": [
+          "SET", 
+          "carrot", 
+          "apple", 
+          "banana"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/aliasing/aliasing8.txt b/v3/example-code/aliasing/aliasing8.txt
new file mode 100644
index 000000000..707d5196f
--- /dev/null
+++ b/v3/example-code/aliasing/aliasing8.txt
@@ -0,0 +1,8 @@
+# test whether heap objects "jiggle" between steps
+x = [1, [2, [3, None]]]
+y = [4, [5, [6, None]]]
+
+x[1][1] = y[1] # hopefully no jiggle!
+
+x = set(['apple', 'banana', 'carrot'])
+
diff --git a/v3/example-code/chris-meyers/optFib.golden b/v3/example-code/chris-meyers/optFib.golden
new file mode 100644
index 000000000..f3ea1e124
--- /dev/null
+++ b/v3/example-code/chris-meyers/optFib.golden
@@ -0,0 +1,51160 @@
+{
+  "code": "# o p t F i b . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Animated Fibonacci Sequence\"\nBOLD   = \"color:red;font-weight:bold;\"\n\nfibs = Matrix(1,20)\nfibs.tableAttr = 'cellspacing=\"0\" cellpadding=\"10\"'\nfibs[0,0] = 1\nfibs[0,1] = 1\n\nfor i in range(2,100) :\n    fibs.style[0,i-1] = BOLD\n    fibs.style[0,i-2] = BOLD\n    fibs[0,i] = fibs[0,i-1]+fibs[0,i-2]\n    fibs.title = \"Last 2 elements add for new one\"\n    htmlPage.item1 = fibs.renderHtml(wrap=10)\n    htmlPage.makeFrame()    #break\n    fibs.style[0,i-2] = \"\"  # uncolor behind\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 2, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 2, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 3, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 3, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 4, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 4, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 5, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 5, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 6, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 6, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 7, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 7, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 8, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 8, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 9, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 9, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 10, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 10, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 11, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 11, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 12, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 12, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 13, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 13, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 14, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 14, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 15, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 15, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 16, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 16, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 17, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 17, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 18, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 18, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 19, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 19, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 20, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x21"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 20, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x21"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 21, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x22"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 21, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x22"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 22, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x23"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 22, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x23"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 23, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x24"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 23, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x24"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 24, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x25"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 24, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x25"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 25, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x26"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 25, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x26"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 26, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x27"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 26, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x27"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 27, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x28"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 27, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x28"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 28, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x29"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 28, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x29"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 29, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x30"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 29, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x30"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 30, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x31"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 30, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x31"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 31, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x32"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 31, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x32"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 32, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x33"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 32, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x33"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 33, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x34"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 33, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x34"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 34, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x35"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 34, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x35"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 35, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x36"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 35, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x36"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 36, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x37"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 36, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x37"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 37, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x38"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 37, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x38"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 38, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x39"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 38, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x39"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 39, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x40"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 39, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x40"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 40, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x41"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 40, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x41"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 41, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x42"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 41, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x42"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 42, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x43"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 42, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x43"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 43, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x44"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 43, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x44"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 44, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x45"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 44, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x45"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 45, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x46"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 45, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x46"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 46, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x47"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 46, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x47"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 47, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x48"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 47, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x48"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 48, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x49"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 48, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x49"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 49, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x50"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 49, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x50"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 50, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x51"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 50, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x51"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 51, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x52"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 51, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x52"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 52, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x53"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 52, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x53"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 53, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x54"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 53, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x54"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 54, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x55"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 54, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x55"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 55, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x56"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 55, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x56"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 56, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x57"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 56, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x57"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 57, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x58"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 57, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x58"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 58, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x59"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 58, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x59"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 59, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x60"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 59, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x60"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 60, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x61"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 60, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x61"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 61, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x62"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 61, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x62"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 62, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x63"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 62, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x63"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 63, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x64"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 63, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x64"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 64, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x65"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 64, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x65"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 65, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x66"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 65, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x66"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 66, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x67"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 66, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x67"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 67, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x68"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 67, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x68"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 68, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x69"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 68, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x69"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 69, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x70"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 69, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x70"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 70, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x71"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 70, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x71"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 71, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x72"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 71, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x72"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 72, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x73"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 72, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x73"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 73, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x74"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 73, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x74"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 74, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x75"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 74, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x75"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 75, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x76"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 75, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x76"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 76, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x77"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 76, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x77"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 77, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x78"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 77, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x78"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 78, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x79"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 78, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x79"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 79, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x80"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 79, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x80"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 80, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x81"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 80, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x81"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 81, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x82"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 81, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x82"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 82, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x83"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 82, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x83"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 83, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x84"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 83, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x84"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 84, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x85"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 84, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x85"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 85, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x86"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 85, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x86"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 86, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x87"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 86, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x87"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 87, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x88"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 87, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x88"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 88, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x89"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 88, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x89"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 89, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x90"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 89, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x90"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 90, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x91"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 90, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x91"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 91, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x92"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 91, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x92"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 92, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x93"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 92, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x93"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 93, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x94"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 93, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x94"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 94, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x95"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 94, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x95"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 95, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x96"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 95, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x96"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 96, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x97"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 96, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x97"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 97, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x98"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 97, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x98"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 98, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x99"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 98, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x99"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 99, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td>83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td style=\"color:red;font-weight:bold;\">218922995834555169026</td><td>354224848179261915075</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x100"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td>83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td style=\"color:red;font-weight:bold;\">218922995834555169026</td><td>354224848179261915075</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 99, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td>83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td style=\"color:red;font-weight:bold;\">218922995834555169026</td><td>354224848179261915075</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x100"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optFib.golden_py3 b/v3/example-code/chris-meyers/optFib.golden_py3
new file mode 100644
index 000000000..f3ea1e124
--- /dev/null
+++ b/v3/example-code/chris-meyers/optFib.golden_py3
@@ -0,0 +1,51160 @@
+{
+  "code": "# o p t F i b . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Animated Fibonacci Sequence\"\nBOLD   = \"color:red;font-weight:bold;\"\n\nfibs = Matrix(1,20)\nfibs.tableAttr = 'cellspacing=\"0\" cellpadding=\"10\"'\nfibs[0,0] = 1\nfibs[0,1] = 1\n\nfor i in range(2,100) :\n    fibs.style[0,i-1] = BOLD\n    fibs.style[0,i-2] = BOLD\n    fibs[0,i] = fibs[0,i-1]+fibs[0,i-2]\n    fibs.title = \"Last 2 elements add for new one\"\n    htmlPage.item1 = fibs.renderHtml(wrap=10)\n    htmlPage.makeFrame()    #break\n    fibs.style[0,i-2] = \"\"  # uncolor behind\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 2, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 2, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">1</td><td>2</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 3, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 3, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td style=\"color:red;font-weight:bold;\">1</td><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 4, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 4, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td style=\"color:red;font-weight:bold;\">2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 5, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 5, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td style=\"color:red;font-weight:bold;\">5</td><td>8</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 6, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 6, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td style=\"color:red;font-weight:bold;\">8</td><td>13</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 7, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 7, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">8</td><td style=\"color:red;font-weight:bold;\">13</td><td>21</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 8, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 8, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td style=\"color:red;font-weight:bold;\">13</td><td style=\"color:red;font-weight:bold;\">21</td><td>34</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 9, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 9, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td style=\"color:red;font-weight:bold;\">21</td><td style=\"color:red;font-weight:bold;\">34</td><td>55</td></tr><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 10, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 10, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td style=\"color:red;font-weight:bold;\">34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td>89</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 11, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 11, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td style=\"color:red;font-weight:bold;\">55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td>144</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 12, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 12, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td style=\"color:red;font-weight:bold;\">89</td><td style=\"color:red;font-weight:bold;\">144</td><td>233</td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 13, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 13, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td style=\"color:red;font-weight:bold;\">144</td><td style=\"color:red;font-weight:bold;\">233</td><td>377</td><td></td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 14, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 14, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td style=\"color:red;font-weight:bold;\">233</td><td style=\"color:red;font-weight:bold;\">377</td><td>610</td><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 15, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 15, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td style=\"color:red;font-weight:bold;\">377</td><td style=\"color:red;font-weight:bold;\">610</td><td>987</td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 16, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 16, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td style=\"color:red;font-weight:bold;\">610</td><td style=\"color:red;font-weight:bold;\">987</td><td>1597</td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 17, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 17, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td style=\"color:red;font-weight:bold;\">987</td><td style=\"color:red;font-weight:bold;\">1597</td><td>2584</td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 18, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 18, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td style=\"color:red;font-weight:bold;\">1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td>4181</td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 19, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 19, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td style=\"color:red;font-weight:bold;\">2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td>6765</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 20, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x21"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 20, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x21"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td style=\"color:red;font-weight:bold;\">4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td>10946</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 21, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x22"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 21, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x22"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td style=\"color:red;font-weight:bold;\">6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td>17711</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 22, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x23"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 22, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x23"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td style=\"color:red;font-weight:bold;\">10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td>28657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 23, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x24"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 23, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x24"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td style=\"color:red;font-weight:bold;\">17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td>46368</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 24, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x25"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 24, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x25"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td style=\"color:red;font-weight:bold;\">28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td>75025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 25, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x26"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 25, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x26"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td style=\"color:red;font-weight:bold;\">46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td>121393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 26, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x27"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 26, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x27"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td style=\"color:red;font-weight:bold;\">75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td>196418</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 27, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x28"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 27, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x28"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td style=\"color:red;font-weight:bold;\">121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td>317811</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 28, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x29"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 28, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x29"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td style=\"color:red;font-weight:bold;\">196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td>514229</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 29, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x30"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 29, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x30"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td style=\"color:red;font-weight:bold;\">317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td>832040</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 30, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x31"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 30, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x31"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td style=\"color:red;font-weight:bold;\">514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td>1346269</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 31, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x32"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 31, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x32"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td style=\"color:red;font-weight:bold;\">832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td>2178309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 32, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x33"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 32, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x33"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td style=\"color:red;font-weight:bold;\">1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td>3524578</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 33, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x34"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 33, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x34"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td style=\"color:red;font-weight:bold;\">2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td>5702887</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 34, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x35"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 34, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x35"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td style=\"color:red;font-weight:bold;\">3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td>9227465</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 35, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x36"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 35, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x36"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td style=\"color:red;font-weight:bold;\">5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td>14930352</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 36, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x37"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 36, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x37"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td style=\"color:red;font-weight:bold;\">9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td>24157817</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 37, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x38"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 37, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x38"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td style=\"color:red;font-weight:bold;\">14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td>39088169</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 38, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x39"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 38, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x39"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td style=\"color:red;font-weight:bold;\">24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td>63245986</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 39, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x40"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 39, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x40"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td style=\"color:red;font-weight:bold;\">39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td>102334155</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 40, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x41"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 40, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x41"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td style=\"color:red;font-weight:bold;\">63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td>165580141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 41, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x42"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 41, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x42"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td style=\"color:red;font-weight:bold;\">102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td>267914296</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 42, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x43"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 42, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x43"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td style=\"color:red;font-weight:bold;\">165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td>433494437</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 43, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x44"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 43, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x44"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td style=\"color:red;font-weight:bold;\">267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td>701408733</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 44, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x45"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 44, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x45"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td style=\"color:red;font-weight:bold;\">433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td>1134903170</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 45, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x46"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 45, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x46"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td style=\"color:red;font-weight:bold;\">701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td>1836311903</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 46, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x47"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 46, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x47"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td style=\"color:red;font-weight:bold;\">1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td>2971215073</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 47, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x48"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 47, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x48"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td style=\"color:red;font-weight:bold;\">1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td>4807526976</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 48, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x49"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 48, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x49"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td style=\"color:red;font-weight:bold;\">2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td>7778742049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 49, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x50"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 49, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x50"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td style=\"color:red;font-weight:bold;\">4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td>12586269025</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 50, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x51"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 50, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x51"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td style=\"color:red;font-weight:bold;\">7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td>20365011074</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 51, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x52"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 51, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x52"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td style=\"color:red;font-weight:bold;\">12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td>32951280099</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 52, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x53"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 52, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x53"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td style=\"color:red;font-weight:bold;\">20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td>53316291173</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 53, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x54"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 53, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x54"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td style=\"color:red;font-weight:bold;\">32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td>86267571272</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 54, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x55"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 54, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x55"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td style=\"color:red;font-weight:bold;\">53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td>139583862445</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 55, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x56"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 55, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x56"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td style=\"color:red;font-weight:bold;\">86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td>225851433717</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 56, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x57"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 56, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x57"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td style=\"color:red;font-weight:bold;\">139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td>365435296162</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 57, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x58"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 57, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x58"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td style=\"color:red;font-weight:bold;\">225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td>591286729879</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 58, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x59"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 58, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x59"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td style=\"color:red;font-weight:bold;\">365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td>956722026041</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 59, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x60"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 59, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x60"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td style=\"color:red;font-weight:bold;\">591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td>1548008755920</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 60, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x61"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 60, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x61"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td style=\"color:red;font-weight:bold;\">956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td>2504730781961</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 61, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x62"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 61, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x62"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td style=\"color:red;font-weight:bold;\">1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td>4052739537881</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 62, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x63"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 62, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x63"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td style=\"color:red;font-weight:bold;\">2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td>6557470319842</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 63, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x64"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 63, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x64"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td style=\"color:red;font-weight:bold;\">4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td>10610209857723</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 64, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x65"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 64, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x65"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td style=\"color:red;font-weight:bold;\">6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td>17167680177565</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 65, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x66"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 65, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x66"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td style=\"color:red;font-weight:bold;\">10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td>27777890035288</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 66, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x67"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 66, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x67"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td style=\"color:red;font-weight:bold;\">17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td>44945570212853</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 67, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x68"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 67, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x68"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td style=\"color:red;font-weight:bold;\">27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td>72723460248141</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 68, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x69"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 68, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x69"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td style=\"color:red;font-weight:bold;\">44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td>117669030460994</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 69, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x70"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 69, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x70"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td style=\"color:red;font-weight:bold;\">72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td>190392490709135</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 70, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x71"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 70, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x71"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td style=\"color:red;font-weight:bold;\">117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td>308061521170129</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 71, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x72"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 71, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x72"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td style=\"color:red;font-weight:bold;\">190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td>498454011879264</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 72, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x73"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 72, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x73"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td style=\"color:red;font-weight:bold;\">308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td>806515533049393</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 73, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x74"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 73, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x74"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td style=\"color:red;font-weight:bold;\">498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td>1304969544928657</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 74, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x75"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 74, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x75"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td style=\"color:red;font-weight:bold;\">806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td>2111485077978050</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 75, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x76"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 75, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x76"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td style=\"color:red;font-weight:bold;\">1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td>3416454622906707</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 76, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x77"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 76, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x77"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td style=\"color:red;font-weight:bold;\">2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td>5527939700884757</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 77, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x78"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 77, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x78"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td style=\"color:red;font-weight:bold;\">3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td>8944394323791464</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 78, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x79"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 78, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x79"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td style=\"color:red;font-weight:bold;\">5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td>14472334024676221</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 79, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x80"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 79, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x80"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td style=\"color:red;font-weight:bold;\">8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td>23416728348467685</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 80, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x81"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 80, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x81"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td style=\"color:red;font-weight:bold;\">14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td>37889062373143906</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 81, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x82"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 81, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x82"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td style=\"color:red;font-weight:bold;\">23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td>61305790721611591</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 82, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x83"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 82, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x83"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td style=\"color:red;font-weight:bold;\">37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td>99194853094755497</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 83, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x84"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 83, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x84"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td style=\"color:red;font-weight:bold;\">61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td>160500643816367088</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 84, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x85"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 84, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x85"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td style=\"color:red;font-weight:bold;\">99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td>259695496911122585</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 85, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x86"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 85, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x86"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td style=\"color:red;font-weight:bold;\">160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td>420196140727489673</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 86, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x87"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 86, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x87"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td style=\"color:red;font-weight:bold;\">259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td>679891637638612258</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 87, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x88"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 87, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x88"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td style=\"color:red;font-weight:bold;\">420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td>1100087778366101931</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 88, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x89"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 88, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x89"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td style=\"color:red;font-weight:bold;\">679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td>1779979416004714189</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 89, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x90"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 89, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x90"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td style=\"color:red;font-weight:bold;\">1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td>2880067194370816120</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 90, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x91"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 90, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x91"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td style=\"color:red;font-weight:bold;\">1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td>4660046610375530309</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 91, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x92"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 91, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x92"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td style=\"color:red;font-weight:bold;\">2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td>7540113804746346429</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 92, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x93"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 92, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x93"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td style=\"color:red;font-weight:bold;\">4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td>12200160415121876738</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 93, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x94"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 93, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x94"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td style=\"color:red;font-weight:bold;\">7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td>19740274219868223167</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 94, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x95"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 94, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x95"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td style=\"color:red;font-weight:bold;\">12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td>31940434634990099905</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 95, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x96"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 95, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x96"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td style=\"color:red;font-weight:bold;\">19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td>51680708854858323072</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 96, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x97"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 96, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x97"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td style=\"color:red;font-weight:bold;\">31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td>83621143489848422977</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 97, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x98"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 97, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x98"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td style=\"color:red;font-weight:bold;\">51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td>135301852344706746049</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 98, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x99"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 98, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x99"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td style=\"color:red;font-weight:bold;\">83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td>218922995834555169026</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 99, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td>83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td style=\"color:red;font-weight:bold;\">218922995834555169026</td><td>354224848179261915075</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x100"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "fibs", 
+        "i"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Fibonacci Sequence</h3>\n<div><div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td>83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td style=\"color:red;font-weight:bold;\">218922995834555169026</td><td>354224848179261915075</td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "i": 99, 
+        "fibs": [
+          "REF", 
+          19
+        ], 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Fibonacci Sequence"
+          ], 
+          [
+            "item1", 
+            "<div>Last 2 elements add for new one</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>1</td><td>1</td><td>2</td><td>3</td><td>5</td><td>8</td><td>13</td><td>21</td><td>34</td><td>55</td></tr><tr><td>89</td><td>144</td><td>233</td><td>377</td><td>610</td><td>987</td><td>1597</td><td>2584</td><td>4181</td><td>6765</td></tr><tr><td>10946</td><td>17711</td><td>28657</td><td>46368</td><td>75025</td><td>121393</td><td>196418</td><td>317811</td><td>514229</td><td>832040</td></tr><tr><td>1346269</td><td>2178309</td><td>3524578</td><td>5702887</td><td>9227465</td><td>14930352</td><td>24157817</td><td>39088169</td><td>63245986</td><td>102334155</td></tr><tr><td>165580141</td><td>267914296</td><td>433494437</td><td>701408733</td><td>1134903170</td><td>1836311903</td><td>2971215073</td><td>4807526976</td><td>7778742049</td><td>12586269025</td></tr><tr><td>20365011074</td><td>32951280099</td><td>53316291173</td><td>86267571272</td><td>139583862445</td><td>225851433717</td><td>365435296162</td><td>591286729879</td><td>956722026041</td><td>1548008755920</td></tr><tr><td>2504730781961</td><td>4052739537881</td><td>6557470319842</td><td>10610209857723</td><td>17167680177565</td><td>27777890035288</td><td>44945570212853</td><td>72723460248141</td><td>117669030460994</td><td>190392490709135</td></tr><tr><td>308061521170129</td><td>498454011879264</td><td>806515533049393</td><td>1304969544928657</td><td>2111485077978050</td><td>3416454622906707</td><td>5527939700884757</td><td>8944394323791464</td><td>14472334024676221</td><td>23416728348467685</td></tr><tr><td>37889062373143906</td><td>61305790721611591</td><td>99194853094755497</td><td>160500643816367088</td><td>259695496911122585</td><td>420196140727489673</td><td>679891637638612258</td><td>1100087778366101931</td><td>1779979416004714189</td><td>2880067194370816120</td></tr><tr><td>4660046610375530309</td><td>7540113804746346429</td><td>12200160415121876738</td><td>19740274219868223167</td><td>31940434634990099905</td><td>51680708854858323072</td><td>83621143489848422977</td><td style=\"color:red;font-weight:bold;\">135301852344706746049</td><td style=\"color:red;font-weight:bold;\">218922995834555169026</td><td>354224848179261915075</td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x100"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optFib.txt b/v3/example-code/chris-meyers/optFib.txt
new file mode 100644
index 000000000..f2d830a31
--- /dev/null
+++ b/v3/example-code/chris-meyers/optFib.txt
@@ -0,0 +1,25 @@
+# o p t F i b . p y
+#
+#  Chris Meyers. 09/25/2013
+#
+from htmlFrame import HtmlFrame
+from matrix import Matrix
+
+htmlPage = HtmlFrame()
+htmlPage.banner = "Animated Fibonacci Sequence"
+BOLD   = "color:red;font-weight:bold;"
+
+fibs = Matrix(1,20)
+fibs.tableAttr = 'cellspacing="0" cellpadding="10"'
+fibs[0,0] = 1
+fibs[0,1] = 1
+
+for i in range(2,100) :
+    fibs.style[0,i-1] = BOLD
+    fibs.style[0,i-2] = BOLD
+    fibs[0,i] = fibs[0,i-1]+fibs[0,i-2]
+    fibs.title = "Last 2 elements add for new one"
+    htmlPage.item1 = fibs.renderHtml(wrap=10)
+    htmlPage.makeFrame()    #break
+    fibs.style[0,i-2] = ""  # uncolor behind
+
diff --git a/v3/example-code/chris-meyers/optKnapsack.golden b/v3/example-code/chris-meyers/optKnapsack.golden
new file mode 100644
index 000000000..9fbdac5d5
--- /dev/null
+++ b/v3/example-code/chris-meyers/optKnapsack.golden
@@ -0,0 +1,14700 @@
+{
+  "code": "# o p t K n a p s a c k . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nmaxwgt = 10\nvals = [0,10,40,30,50]\nwgts = [0, 5, 4, 6, 3]\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Knapsack Problem\"\nheaders=['wt'+str(i) for i in range(maxwgt+1)]\n\ninp = Matrix(len(vals),3)\ninp.title = \"Sack holds weight %s\" % maxwgt\ninp.dftFormat = \"<pre>%03s</pre>\"\ninp.tableAttr = 'border=\"1\" cellspacing=\"0\" cellpadding=\"4\"',\ninp.tableHeaders=['Item #','Weight','Value']             \nfor i in range(len(vals)) :\n  inp.setrowVals(i, [i, wgts[i], vals[i]])\n\nframe = Matrix(1,2)\nframe[0,0] = inp.renderHtml()\nnItems = len(vals)\nbest = Matrix(nItems,maxwgt+1)\nbest.dftFormat = \"<pre>%03s</pre>\"\n\nfor i in range(1,nItems) :\n  best.setrowVal(i,0)\nfor i in range(1,nItems) :\n  for w in range(0,maxwgt+1) :\n    remBest = best[i-1,w-wgts[i]]\n    if remBest == None : remBest = 0\n    newSolution = vals[i]+remBest\n    if ((wgts[i] <= w and newSolution > best[i-1,w])) :\n      best[i,w] = newSolution\n      best.style[i,w] = \"background-color:pink\"\n      best.title = \"Optimal solution for weight %s includes item %s\" % (w,i)\n      best.tableAttr='border=\"1\" cellspacing=\"0\" cellpadding=\"4\"'\n      best.tableHeaders=headers\n      frame[0,1] = best.renderHtml()\n      htmlPage.item1 = frame.renderHtml()\n      htmlPage.makeFrame()  #break\n    else :\n      best[i,w] = best[i-1,w]\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 6, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 6, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 7, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 7, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 8, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 8, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 9, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 9, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 1</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 4, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 4, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 6, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 6, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 7, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 7, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 8, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 8, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 40, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 9, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 10, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 9, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 10, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 10, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 2, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 10, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 2</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 3, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 70, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 3</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 3</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 3, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 70, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 3</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 3</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 3, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 3 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 3 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 3, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 3 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 3 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 4, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 4, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 4 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 5 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 6, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 6, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 50, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 6 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 7, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 7, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 7 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 8, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 8, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 8 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 9, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 9, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 9 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td><pre>  0</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 45, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "i", 
+        "headers", 
+        "inp", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Knapsack Problem</h3>\n<div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 4, 
+        "frame": [
+          "REF", 
+          23
+        ], 
+        "inp": [
+          "REF", 
+          22
+        ], 
+        "headers": [
+          "REF", 
+          21
+        ], 
+        "w": 10, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 40, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 90, 
+        "best": [
+          "REF", 
+          24
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            "\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td><div>Sack holds weight 10</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>Item #</th><th>Weight</th><th>Value</th></tr>\n  <tr><td><pre>  0</pre></td><td><pre>  0</pre></td><td><pre>  0</pre></td></tr>\n  <tr><td><pre>  1</pre></td><td><pre>  5</pre></td><td><pre> 10</pre></td></tr>\n  <tr><td><pre>  2</pre></td><td><pre>  4</pre></td><td><pre> 40</pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  6</pre></td><td><pre> 30</pre></td></tr>\n  <tr><td><pre>  4</pre></td><td><pre>  3</pre></td><td><pre> 50</pre></td></tr>\n</table></td><td><div>Optimal solution for weight 10 includes item 4</div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n<tr><th>wt0</th><th>wt1</th><th>wt2</th><th>wt3</th><th>wt4</th><th>wt5</th><th>wt6</th><th>wt7</th><th>wt8</th><th>wt9</th><th>wt10</th></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre> 10</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 40</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 40</pre></td><td><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 70</pre></td></tr>\n  <tr><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 50</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td><td style=\"background-color:pink\"><pre> 90</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "22": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optKnapsack.golden_py3 b/v3/example-code/chris-meyers/optKnapsack.golden_py3
new file mode 100644
index 000000000..2737c2218
--- /dev/null
+++ b/v3/example-code/chris-meyers/optKnapsack.golden_py3
@@ -0,0 +1,339 @@
+{
+  "code": "# o p t K n a p s a c k . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nmaxwgt = 10\nvals = [0,10,40,30,50]\nwgts = [0, 5, 4, 6, 3]\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Knapsack Problem\"\nheaders=['wt'+str(i) for i in range(maxwgt+1)]\n\ninp = Matrix(len(vals),3)\ninp.title = \"Sack holds weight %s\" % maxwgt\ninp.dftFormat = \"<pre>%03s</pre>\"\ninp.tableAttr = 'border=\"1\" cellspacing=\"0\" cellpadding=\"4\"',\ninp.tableHeaders=['Item #','Weight','Value']             \nfor i in range(len(vals)) :\n  inp.setrowVals(i, [i, wgts[i], vals[i]])\n\nframe = Matrix(1,2)\nframe[0,0] = inp.renderHtml()\nnItems = len(vals)\nbest = Matrix(nItems,maxwgt+1)\nbest.dftFormat = \"<pre>%03s</pre>\"\n\nfor i in range(1,nItems) :\n  best.setrowVal(i,0)\nfor i in range(1,nItems) :\n  for w in range(0,maxwgt+1) :\n    remBest = best[i-1,w-wgts[i]]\n    if remBest == None : remBest = 0\n    newSolution = vals[i]+remBest\n    if ((wgts[i] <= w and newSolution > best[i-1,w])) :\n      best[i,w] = newSolution\n      best.style[i,w] = \"background-color:pink\"\n      best.title = \"Optimal solution for weight %s includes item %s\" % (w,i)\n      best.tableAttr='border=\"1\" cellspacing=\"0\" cellpadding=\"4\"'\n      best.tableHeaders=headers\n      frame[0,1] = best.renderHtml()\n      htmlPage.item1 = frame.renderHtml()\n      htmlPage.makeFrame()  #break\n    else :\n      best[i,w] = best[i-1,w]\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "maxwgt", 
+        "vals", 
+        "wgts", 
+        "htmlPage", 
+        "headers", 
+        "inp", 
+        "i", 
+        "frame", 
+        "nItems", 
+        "best", 
+        "w", 
+        "remBest", 
+        "newSolution"
+      ], 
+      "stdout": "", 
+      "exception_msg": "TypeError: unorderable types: int() > NoneType()", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "wgts": [
+          "REF", 
+          19
+        ], 
+        "nItems": 5, 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "maxwgt": 10, 
+        "i": 1, 
+        "frame": [
+          "REF", 
+          24
+        ], 
+        "inp": [
+          "REF", 
+          23
+        ], 
+        "headers": [
+          "REF", 
+          22
+        ], 
+        "w": 5, 
+        "vals": [
+          "REF", 
+          18
+        ], 
+        "remBest": 0, 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "newSolution": 10, 
+        "best": [
+          "REF", 
+          25
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "LIST", 
+          0, 
+          10, 
+          40, 
+          30, 
+          50
+        ], 
+        "19": [
+          "LIST", 
+          0, 
+          5, 
+          4, 
+          6, 
+          3
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Knapsack Problem"
+          ], 
+          [
+            "item1", 
+            ""
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "22": [
+          "LIST", 
+          "wt0", 
+          "wt1", 
+          "wt2", 
+          "wt3", 
+          "wt4", 
+          "wt5", 
+          "wt6", 
+          "wt7", 
+          "wt8", 
+          "wt9", 
+          "wt10"
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x3"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-5x11"
+        ]
+      }, 
+      "line": 37, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optKnapsack.txt b/v3/example-code/chris-meyers/optKnapsack.txt
new file mode 100644
index 000000000..e72b401ca
--- /dev/null
+++ b/v3/example-code/chris-meyers/optKnapsack.txt
@@ -0,0 +1,47 @@
+# o p t K n a p s a c k . p y
+#
+#  Chris Meyers. 09/25/2013
+#
+from htmlFrame import HtmlFrame
+from matrix import Matrix
+
+maxwgt = 10
+vals = [0,10,40,30,50]
+wgts = [0, 5, 4, 6, 3]
+
+htmlPage = HtmlFrame()
+htmlPage.banner = "Knapsack Problem"
+headers=['wt'+str(i) for i in range(maxwgt+1)]
+
+inp = Matrix(len(vals),3)
+inp.title = "Sack holds weight %s" % maxwgt
+inp.dftFormat = "<pre>%03s</pre>"
+inp.tableAttr = 'border="1" cellspacing="0" cellpadding="4"',
+inp.tableHeaders=['Item #','Weight','Value']             
+for i in range(len(vals)) :
+  inp.setrowVals(i, [i, wgts[i], vals[i]])
+
+frame = Matrix(1,2)
+frame[0,0] = inp.renderHtml()
+nItems = len(vals)
+best = Matrix(nItems,maxwgt+1)
+best.dftFormat = "<pre>%03s</pre>"
+
+for i in range(1,nItems) :
+  best.setrowVal(i,0)
+for i in range(1,nItems) :
+  for w in range(0,maxwgt+1) :
+    remBest = best[i-1,w-wgts[i]]
+    if remBest == None : remBest = 0
+    newSolution = vals[i]+remBest
+    if ((wgts[i] <= w and newSolution > best[i-1,w])) :
+      best[i,w] = newSolution
+      best.style[i,w] = "background-color:pink"
+      best.title = "Optimal solution for weight %s includes item %s" % (w,i)
+      best.tableAttr='border="1" cellspacing="0" cellpadding="4"'
+      best.tableHeaders=headers
+      frame[0,1] = best.renderHtml()
+      htmlPage.item1 = frame.renderHtml()
+      htmlPage.makeFrame()  #break
+    else :
+      best[i,w] = best[i-1,w]
diff --git a/v3/example-code/chris-meyers/optMinpath.golden b/v3/example-code/chris-meyers/optMinpath.golden
new file mode 100644
index 000000000..3d3b0e933
--- /dev/null
+++ b/v3/example-code/chris-meyers/optMinpath.golden
@@ -0,0 +1,5328 @@
+{
+  "code": "#   o p t M i n p a t h . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nfrom random     import randint\nimport random\nrandom.seed(0) # for determinism\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Minimum Path from top to bottom\"\n\ndef renderTriangle(t) :\n    t.dftFormat = \"<pre>%03s</pre>\"\n    t.tableAttr='border=\"0\" cellspacing=\"0\" cellpadding=\"4\"'\n    return t.renderHtml()\n\ndef minpath(nrows) :\n  mat = Matrix(1,2)\n  tri = Matrix(nrows,nrows)\n  org = Matrix(nrows,nrows)\n  for r in range(nrows) :\n    vals = [randint(1,9) for c in range(r+1)]\n    tri.setrowVals(r,vals)\n    org.setrowVals(r,vals)\n\n  org.title = \"Original Values\"\n  mat[0,0] = renderTriangle(org)\n  mat.tableAttr='border=\"1\" cellspacing=\"0\" cellpadding=\"4\"'\n\n  tri.style.setrowVal(nrows-1,\"background-color:lightgreen\")\n  for row in range(nrows-2,-1,-1) :\n    for col in range(row+1) :\n      left = tri[row+1,col]\n      right= tri[row+1,col+1]\n      this = tri[row,col]\n      tri.style[row,col] = \"background-color:pink\"\n      tri.title = \"Set to min(%s+%s, %s+%s)\" % (this,left,this,right)\n      mat[0,1] = renderTriangle(tri)\n      htmlPage.item1 = mat.renderHtml()\n      htmlPage.makeFrame()  #break\n      tri[row,col] = best = min(this+left,this+right)\n      tri.style[row,col] = \"background-color:lightgreen\"\n  mat[0,1] = renderTriangle(tri)\n  htmlPage.item1 = mat.renderHtml()\n  htmlPage.banner = \"Miniumum cost is %s\" % best\n  htmlPage.makeFrame()  #break\n\nminpath(4)\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 3, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 3, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 8, 
+            "col": 0, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(3+8, 3+3)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(3+8, 3+3)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 3, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 3, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 8, 
+            "col": 0, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(3+8, 3+3)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(3+8, 3+3)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 5, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 5, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 3, 
+            "col": 1, 
+            "best": 6, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+3, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+3, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 5, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 5, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 3, 
+            "col": 1, 
+            "best": 6, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+3, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+3, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 6, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 4, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 5, 
+            "col": 2, 
+            "best": 8, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+5, 4+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+5, 4+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 6, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 4, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 5, 
+            "col": 2, 
+            "best": 8, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+5, 4+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+5, 4+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 8, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 6, 
+            "col": 0, 
+            "best": 9, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+6, 7+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+6, 7+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 8, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 6, 
+            "col": 0, 
+            "best": 9, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+6, 7+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+6, 7+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 9, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 4, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 8, 
+            "col": 1, 
+            "best": 13, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+8, 4+9)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+8, 4+9)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 9, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 4, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 8, 
+            "col": 1, 
+            "best": 13, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+8, 4+9)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(4+8, 4+9)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:pink\"><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 12, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 8, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 13, 
+            "col": 0, 
+            "best": 12, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 12, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 8, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 13, 
+            "col": 0, 
+            "best": 12, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 12, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 8, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 13, 
+            "col": 0, 
+            "best": 20, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Miniumum cost is 20"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 20</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 49, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Miniumum cost is 20</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 20</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "c": 3, 
+            "right": 12, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 8, 
+            "nrows": 4, 
+            "__return__": null, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              29
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 13, 
+            "col": 0, 
+            "best": 20, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "c", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Miniumum cost is 20"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 20</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "29": [
+          "LIST", 
+          8, 
+          3, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 49, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Miniumum cost is 20</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 20</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "module", 
+          "random"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Miniumum cost is 20"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  8</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  4</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  8</pre></td><td><pre>  3</pre></td><td><pre>  5</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+13, 8+12)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 20</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 13</pre></td><td style=\"background-color:lightgreen\"><pre> 12</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  6</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  9</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  3</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ]
+      }, 
+      "line": 51, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optMinpath.golden_py3 b/v3/example-code/chris-meyers/optMinpath.golden_py3
new file mode 100644
index 000000000..58e6cf14b
--- /dev/null
+++ b/v3/example-code/chris-meyers/optMinpath.golden_py3
@@ -0,0 +1,5300 @@
+{
+  "code": "#   o p t M i n p a t h . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nfrom random     import randint\nimport random\nrandom.seed(0) # for determinism\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Minimum Path from top to bottom\"\n\ndef renderTriangle(t) :\n    t.dftFormat = \"<pre>%03s</pre>\"\n    t.tableAttr='border=\"0\" cellspacing=\"0\" cellpadding=\"4\"'\n    return t.renderHtml()\n\ndef minpath(nrows) :\n  mat = Matrix(1,2)\n  tri = Matrix(nrows,nrows)\n  org = Matrix(nrows,nrows)\n  for r in range(nrows) :\n    vals = [randint(1,9) for c in range(r+1)]\n    tri.setrowVals(r,vals)\n    org.setrowVals(r,vals)\n\n  org.title = \"Original Values\"\n  mat[0,0] = renderTriangle(org)\n  mat.tableAttr='border=\"1\" cellspacing=\"0\" cellpadding=\"4\"'\n\n  tri.style.setrowVal(nrows-1,\"background-color:lightgreen\")\n  for row in range(nrows-2,-1,-1) :\n    for col in range(row+1) :\n      left = tri[row+1,col]\n      right= tri[row+1,col+1]\n      this = tri[row,col]\n      tri.style[row,col] = \"background-color:pink\"\n      tri.title = \"Set to min(%s+%s, %s+%s)\" % (this,left,this,right)\n      mat[0,1] = renderTriangle(tri)\n      htmlPage.item1 = mat.renderHtml()\n      htmlPage.makeFrame()  #break\n      tri[row,col] = best = min(this+left,this+right)\n      tri.style[row,col] = \"background-color:lightgreen\"\n  mat[0,1] = renderTriangle(tri)\n  htmlPage.item1 = mat.renderHtml()\n  htmlPage.banner = \"Miniumum cost is %s\" % best\n  htmlPage.makeFrame()  #break\n\nminpath(4)\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 5, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 5, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 7, 
+            "col": 0, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+7, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+7, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 5, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 5, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 7, 
+            "col": 0, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+7, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(5+7, 5+5)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 8, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 9, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 5, 
+            "col": 1, 
+            "best": 10, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(9+5, 9+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(9+5, 9+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 8, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 9, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 5, 
+            "col": 1, 
+            "best": 10, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(9+5, 9+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(9+5, 9+8)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:pink\"><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 6, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 8, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 8, 
+            "col": 2, 
+            "best": 14, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+8, 8+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+8, 8+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 6, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 8, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 8, 
+            "col": 2, 
+            "best": 14, 
+            "row": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+8, 8+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(8+8, 8+6)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:pink\"><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 14, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 10, 
+            "col": 0, 
+            "best": 14, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+10, 7+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+10, 7+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 14, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 10, 
+            "col": 0, 
+            "best": 14, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+10, 7+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+10, 7+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 14, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 1, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 14, 
+            "col": 1, 
+            "best": 17, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(1+14, 1+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:pink\"><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(1+14, 1+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:pink\"><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 14, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 1, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 14, 
+            "col": 1, 
+            "best": 17, 
+            "row": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(1+14, 1+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:pink\"><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(1+14, 1+14)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:pink\"><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 15, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 17, 
+            "col": 0, 
+            "best": 15, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 15, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 17, 
+            "col": 0, 
+            "best": 15, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Minimum Path from top to bottom"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 44, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Minimum Path from top to bottom</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:pink\"><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 15, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 17, 
+            "col": 0, 
+            "best": 22, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Miniumum cost is 22"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 22</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 49, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Miniumum cost is 22</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 22</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "minpath", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tri": [
+              "REF", 
+              24
+            ], 
+            "right": 15, 
+            "mat": [
+              "REF", 
+              23
+            ], 
+            "this": 7, 
+            "nrows": 4, 
+            "__return__": null, 
+            "r": 3, 
+            "vals": [
+              "REF", 
+              33
+            ], 
+            "org": [
+              "REF", 
+              25
+            ], 
+            "left": 17, 
+            "col": 0, 
+            "best": 22, 
+            "row": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "minpath", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "minpath_f1", 
+          "ordered_varnames": [
+            "nrows", 
+            "mat", 
+            "tri", 
+            "org", 
+            "r", 
+            "vals", 
+            "row", 
+            "col", 
+            "left", 
+            "right", 
+            "this", 
+            "best", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Miniumum cost is 22"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 22</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ], 
+        "23": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x2"
+        ], 
+        "24": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "25": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-4x4"
+        ], 
+        "33": [
+          "LIST", 
+          7, 
+          5, 
+          8, 
+          6
+        ]
+      }, 
+      "line": 49, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "randint", 
+        "random", 
+        "htmlPage", 
+        "renderTriangle", 
+        "minpath"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Miniumum cost is 22</h3>\n<div>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 22</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "renderTriangle": [
+          "REF", 
+          21
+        ], 
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "randint": [
+          "REF", 
+          18
+        ], 
+        "random": [
+          "REF", 
+          19
+        ], 
+        "minpath": [
+          "REF", 
+          22
+        ], 
+        "htmlPage": [
+          "REF", 
+          20
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "FUNCTION", 
+          "randint(self, a, b)", 
+          null
+        ], 
+        "19": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Miniumum cost is 22"
+          ], 
+          [
+            "item1", 
+            "\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><div>Original Values</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td><pre>  7</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  1</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  5</pre></td><td><pre>  9</pre></td><td><pre>  8</pre></td><td><pre>   </pre></td></tr>\n  <tr><td><pre>  7</pre></td><td><pre>  5</pre></td><td><pre>  8</pre></td><td><pre>  6</pre></td></tr>\n</table></td><td><div>Set to min(7+17, 7+15)</div>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"4\">\n  <tr><td style=\"background-color:lightgreen\"><pre> 22</pre></td><td><pre>   </pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 17</pre></td><td style=\"background-color:lightgreen\"><pre> 15</pre></td><td><pre>   </pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre> 10</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td style=\"background-color:lightgreen\"><pre> 14</pre></td><td><pre>   </pre></td></tr>\n  <tr><td style=\"background-color:lightgreen\"><pre>  7</pre></td><td style=\"background-color:lightgreen\"><pre>  5</pre></td><td style=\"background-color:lightgreen\"><pre>  8</pre></td><td style=\"background-color:lightgreen\"><pre>  6</pre></td></tr>\n</table></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "21": [
+          "FUNCTION", 
+          "renderTriangle(t)", 
+          null
+        ], 
+        "22": [
+          "FUNCTION", 
+          "minpath(nrows)", 
+          null
+        ]
+      }, 
+      "line": 51, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optMinpath.txt b/v3/example-code/chris-meyers/optMinpath.txt
new file mode 100644
index 000000000..a995454a5
--- /dev/null
+++ b/v3/example-code/chris-meyers/optMinpath.txt
@@ -0,0 +1,51 @@
+#   o p t M i n p a t h . p y
+#
+#  Chris Meyers. 09/25/2013
+#
+from htmlFrame import HtmlFrame
+from matrix import Matrix
+
+from random     import randint
+import random
+random.seed(0) # for determinism
+
+htmlPage = HtmlFrame()
+htmlPage.banner = "Minimum Path from top to bottom"
+
+def renderTriangle(t) :
+    t.dftFormat = "<pre>%03s</pre>"
+    t.tableAttr='border="0" cellspacing="0" cellpadding="4"'
+    return t.renderHtml()
+
+def minpath(nrows) :
+  mat = Matrix(1,2)
+  tri = Matrix(nrows,nrows)
+  org = Matrix(nrows,nrows)
+  for r in range(nrows) :
+    vals = [randint(1,9) for c in range(r+1)]
+    tri.setrowVals(r,vals)
+    org.setrowVals(r,vals)
+
+  org.title = "Original Values"
+  mat[0,0] = renderTriangle(org)
+  mat.tableAttr='border="1" cellspacing="0" cellpadding="4"'
+
+  tri.style.setrowVal(nrows-1,"background-color:lightgreen")
+  for row in range(nrows-2,-1,-1) :
+    for col in range(row+1) :
+      left = tri[row+1,col]
+      right= tri[row+1,col+1]
+      this = tri[row,col]
+      tri.style[row,col] = "background-color:pink"
+      tri.title = "Set to min(%s+%s, %s+%s)" % (this,left,this,right)
+      mat[0,1] = renderTriangle(tri)
+      htmlPage.item1 = mat.renderHtml()
+      htmlPage.makeFrame()  #break
+      tri[row,col] = best = min(this+left,this+right)
+      tri.style[row,col] = "background-color:lightgreen"
+  mat[0,1] = renderTriangle(tri)
+  htmlPage.item1 = mat.renderHtml()
+  htmlPage.banner = "Miniumum cost is %s" % best
+  htmlPage.makeFrame()  #break
+
+minpath(4)
diff --git a/v3/example-code/chris-meyers/optSieve.golden b/v3/example-code/chris-meyers/optSieve.golden
new file mode 100644
index 000000000..d46278082
--- /dev/null
+++ b/v3/example-code/chris-meyers/optSieve.golden
@@ -0,0 +1,22058 @@
+{
+  "code": "#  o p t S i e v e . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Animated Sieve of Erastosthenes\"\nBOLD   = \"color:red;font-weight:bold;\"\n\nprimes = Matrix(1,20)\nprimes.tableAttr = 'cellspacing=\"0\" cellpadding=\"10\"'\nprimes[0,0] = 2\nnprimes = 1\n\nfor x in range(3,21) :\n    primeSofar = True\n    for px in range(nprimes) :\n        primes.title = \"Testing if %s is divisible by primes so far\" % x\n        primes.style[0,px] = BOLD\n        htmlPage.item1 = primes.renderHtml(wrap=5)\n        htmlPage.makeFrame()           #break\n        primes.style[0,px] = \"\"\n        div = primes[0,px]\n        if x % div == 0 : primeSofar = False\n        if not primeSofar : break\n\n    if primeSofar :\n        primes[0,nprimes] = x\n        nprimes += 1\n        primes.title = \"Found a new prime %s\" % x\n    else :\n        primes.title = \"Not Prime: %s mod %s is zero\" % (x,div)\n    htmlPage.item1 = primes.renderHtml(wrap=5)\n    htmlPage.makeFrame()\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 1, 
+        "x": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 3 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 3 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 1, 
+        "x": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 3 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 3</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 4, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 4 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 4 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 4, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 4 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 4 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 5</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 6, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 6 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 6 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 6, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 6 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 6 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 7</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 8, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 8 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 8 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 8, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 8 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 8 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 9 mod 3 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 10, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 10 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 10 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 10, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 10 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 10 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 11</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 12, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 12 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 12 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 12, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 12 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 12 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 13</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 14, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 14 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 14 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 14, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 14 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 14 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 15 mod 3 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 16, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 16 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 16 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 16, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 16 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 16 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 17</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 18, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 18 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 18 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 18, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 18 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 18 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 6, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td style=\"color:red;font-weight:bold;\">17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td style=\"color:red;font-weight:bold;\">17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 6, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td style=\"color:red;font-weight:bold;\">17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 19</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 8, 
+        "x": 20, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 17, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 20 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 20 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 8, 
+        "x": 20, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 17, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 20 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optSieve.golden_py3 b/v3/example-code/chris-meyers/optSieve.golden_py3
new file mode 100644
index 000000000..d46278082
--- /dev/null
+++ b/v3/example-code/chris-meyers/optSieve.golden_py3
@@ -0,0 +1,22058 @@
+{
+  "code": "#  o p t S i e v e . p y\n#\n#  Chris Meyers. 09/25/2013\n#\nfrom htmlFrame import HtmlFrame\nfrom matrix import Matrix\n\nhtmlPage = HtmlFrame()\nhtmlPage.banner = \"Animated Sieve of Erastosthenes\"\nBOLD   = \"color:red;font-weight:bold;\"\n\nprimes = Matrix(1,20)\nprimes.tableAttr = 'cellspacing=\"0\" cellpadding=\"10\"'\nprimes[0,0] = 2\nnprimes = 1\n\nfor x in range(3,21) :\n    primeSofar = True\n    for px in range(nprimes) :\n        primes.title = \"Testing if %s is divisible by primes so far\" % x\n        primes.style[0,px] = BOLD\n        htmlPage.item1 = primes.renderHtml(wrap=5)\n        htmlPage.makeFrame()           #break\n        primes.style[0,px] = \"\"\n        div = primes[0,px]\n        if x % div == 0 : primeSofar = False\n        if not primeSofar : break\n\n    if primeSofar :\n        primes[0,nprimes] = x\n        nprimes += 1\n        primes.title = \"Found a new prime %s\" % x\n    else :\n        primes.title = \"Not Prime: %s mod %s is zero\" % (x,div)\n    htmlPage.item1 = primes.renderHtml(wrap=5)\n    htmlPage.makeFrame()\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 1, 
+        "x": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 3 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 3 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 1, 
+        "x": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 3 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 3</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 4, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 4 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 4 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 4, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 4 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 4 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 2, 
+        "x": 5, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 5 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 5</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 6, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 6 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 6 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 6, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 6 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 6 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 3, 
+        "x": 7, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 7 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 7</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 8, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 8 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 8 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 8, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 8 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 8 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 9, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 9 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 9 mod 3 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 10, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 10 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 10 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 10, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 10 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 10 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 4, 
+        "x": 11, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 11 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 11</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 12, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 12 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 12 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 12, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 12 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 12 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 5, 
+        "x": 13, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 13 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 13</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 14, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 14 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 14 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 14, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 14 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 14 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 15, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 15 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 15 mod 3 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 16, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 16 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 16 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 16, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 16 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 16 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 6, 
+        "x": 17, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 17 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 17</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 18, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 18 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 18 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 18, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 18 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Not Prime: 18 mod 2 is zero</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 1, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 2, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td style=\"color:red;font-weight:bold;\">3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 2, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 3, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td style=\"color:red;font-weight:bold;\">5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 3, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 5, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td style=\"color:red;font-weight:bold;\">7</td><td>11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 4, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 7, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td style=\"color:red;font-weight:bold;\">11</td></tr><tr><td>13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 5, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 11, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td style=\"color:red;font-weight:bold;\">13</td><td>17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 6, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td style=\"color:red;font-weight:bold;\">17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td style=\"color:red;font-weight:bold;\">17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 6, 
+        "primeSofar": true, 
+        "nprimes": 7, 
+        "x": 19, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 13, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 19 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td style=\"color:red;font-weight:bold;\">17</td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Found a new prime 19</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td>2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 8, 
+        "x": 20, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 17, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 20 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "HtmlFrame", 
+        "Matrix", 
+        "htmlPage", 
+        "BOLD", 
+        "primes", 
+        "nprimes", 
+        "x", 
+        "primeSofar", 
+        "px", 
+        "div"
+      ], 
+      "html_output": "\n<html><body>\n<h3>Animated Sieve of Erastosthenes</h3>\n<div><div>Testing if 20 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table></div>\n<div></div>\n<div></div>\n</html></body>\n", 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Matrix": [
+          "REF", 
+          5
+        ], 
+        "px": 0, 
+        "primeSofar": true, 
+        "nprimes": 8, 
+        "x": 20, 
+        "primes": [
+          "REF", 
+          19
+        ], 
+        "HtmlFrame": [
+          "REF", 
+          1
+        ], 
+        "div": 17, 
+        "htmlPage": [
+          "REF", 
+          18
+        ], 
+        "BOLD": "color:red;font-weight:bold;"
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "HtmlFrame", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "makeEofPage", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "makeFrame", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, template, banner)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "makeEofPage(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "makeFrame(self, template)", 
+          null
+        ], 
+        "5": [
+          "CLASS", 
+          "Matrix", 
+          [], 
+          [
+            "__getitem__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "__setitem__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "getcol", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "getrow", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "populate", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "renderHtml", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "setcolVal", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "setcolVals", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "setrowVal", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "setrowVals", 
+            [
+              "REF", 
+              17
+            ]
+          ]
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__getitem__(self, coords)", 
+          null
+        ], 
+        "7": [
+          "FUNCTION", 
+          "__init__(self, nrows, ncols, data, dftFormat, dftStyle, title, tableAttr, tableHeaders, Expand)", 
+          null
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__setitem__(self, coords, value)", 
+          null
+        ], 
+        "9": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "10": [
+          "FUNCTION", 
+          "getcol(self, col)", 
+          null
+        ], 
+        "11": [
+          "FUNCTION", 
+          "getrow(self, row)", 
+          null
+        ], 
+        "12": [
+          "FUNCTION", 
+          "populate(self, lists)", 
+          null
+        ], 
+        "13": [
+          "FUNCTION", 
+          "renderHtml(self, wrap)", 
+          null
+        ], 
+        "14": [
+          "FUNCTION", 
+          "setcolVal(self, col, value)", 
+          null
+        ], 
+        "15": [
+          "FUNCTION", 
+          "setcolVals(self, col, values)", 
+          null
+        ], 
+        "16": [
+          "FUNCTION", 
+          "setrowVal(self, row, value)", 
+          null
+        ], 
+        "17": [
+          "FUNCTION", 
+          "setrowVals(self, row, values)", 
+          null
+        ], 
+        "18": [
+          "INSTANCE", 
+          "HtmlFrame", 
+          [
+            "banner", 
+            "Animated Sieve of Erastosthenes"
+          ], 
+          [
+            "item1", 
+            "<div>Testing if 20 is divisible by primes so far</div>\n<table cellspacing=\"0\" cellpadding=\"10\">\n  <tr><td style=\"color:red;font-weight:bold;\">2</td><td>3</td><td>5</td><td>7</td><td>11</td></tr><tr><td>13</td><td>17</td><td>19</td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr>\n</table>"
+          ], 
+          [
+            "item2", 
+            ""
+          ], 
+          [
+            "item3", 
+            ""
+          ], 
+          [
+            "outputOn", 
+            true
+          ], 
+          [
+            "template", 
+            "\n<html><body>\n<h3>%(banner)s</h3>\n<div>%(item1)s</div>\n<div>%(item2)s</div>\n<div>%(item3)s</div>\n</html></body>\n"
+          ]
+        ], 
+        "19": [
+          "INSTANCE_PPRINT", 
+          "Matrix", 
+          "Matrix-1x20"
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }
+  ]
+}
diff --git a/v3/example-code/chris-meyers/optSieve.txt b/v3/example-code/chris-meyers/optSieve.txt
new file mode 100644
index 000000000..98a2aa5da
--- /dev/null
+++ b/v3/example-code/chris-meyers/optSieve.txt
@@ -0,0 +1,37 @@
+#  o p t S i e v e . p y
+#
+#  Chris Meyers. 09/25/2013
+#
+from htmlFrame import HtmlFrame
+from matrix import Matrix
+
+htmlPage = HtmlFrame()
+htmlPage.banner = "Animated Sieve of Erastosthenes"
+BOLD   = "color:red;font-weight:bold;"
+
+primes = Matrix(1,20)
+primes.tableAttr = 'cellspacing="0" cellpadding="10"'
+primes[0,0] = 2
+nprimes = 1
+
+for x in range(3,21) :
+    primeSofar = True
+    for px in range(nprimes) :
+        primes.title = "Testing if %s is divisible by primes so far" % x
+        primes.style[0,px] = BOLD
+        htmlPage.item1 = primes.renderHtml(wrap=5)
+        htmlPage.makeFrame()           #break
+        primes.style[0,px] = ""
+        div = primes[0,px]
+        if x % div == 0 : primeSofar = False
+        if not primeSofar : break
+
+    if primeSofar :
+        primes[0,nprimes] = x
+        nprimes += 1
+        primes.title = "Found a new prime %s" % x
+    else :
+        primes.title = "Not Prime: %s mod %s is zero" % (x,div)
+    htmlPage.item1 = primes.renderHtml(wrap=5)
+    htmlPage.makeFrame()
+
diff --git a/v3/example-code/closures/closure1.golden b/v3/example-code/closures/closure1.golden
new file mode 100644
index 000000000..51d175606
--- /dev/null
+++ b/v3/example-code/closures/closure1.golden
@@ -0,0 +1,567 @@
+{
+  "code": "def foo(y):\n    def bar(x):\n        return x + y\n    return bar\n\nb = foo(1)\nb(2)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure1.golden_py3 b/v3/example-code/closures/closure1.golden_py3
new file mode 100644
index 000000000..51d175606
--- /dev/null
+++ b/v3/example-code/closures/closure1.golden_py3
@@ -0,0 +1,567 @@
+{
+  "code": "def foo(y):\n    def bar(x):\n        return x + y\n    return bar\n\nb = foo(1)\nb(2)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure1.txt b/v3/example-code/closures/closure1.txt
new file mode 100644
index 000000000..1b784657b
--- /dev/null
+++ b/v3/example-code/closures/closure1.txt
@@ -0,0 +1,7 @@
+def foo(y):
+    def bar(x):
+        return x + y
+    return bar
+
+b = foo(1)
+b(2)
diff --git a/v3/example-code/closures/closure2.golden b/v3/example-code/closures/closure2.golden
new file mode 100644
index 000000000..57084967a
--- /dev/null
+++ b/v3/example-code/closures/closure2.golden
@@ -0,0 +1,1764 @@
+{
+  "code": "def foo(y):\n    def bar(x):\n        return x + y\n    return bar\n\ndef foo_deux(y):\n    def bar_deux(x):\n        return x + y\n    return bar_deux\n\nb = foo(1)\nb_deux = foo_deux(1000)\n\nb(2)    \nb_deux(2000)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "bar_deux_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "bar_deux_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 3000, 
+            "x": 2000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "bar_deux_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure2.golden_py3 b/v3/example-code/closures/closure2.golden_py3
new file mode 100644
index 000000000..57084967a
--- /dev/null
+++ b/v3/example-code/closures/closure2.golden_py3
@@ -0,0 +1,1764 @@
+{
+  "code": "def foo(y):\n    def bar(x):\n        return x + y\n    return bar\n\ndef foo_deux(y):\n    def bar_deux(x):\n        return x + y\n    return bar_deux\n\nb = foo(1)\nb_deux = foo_deux(1000)\n\nb(2)    \nb_deux(2000)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "foo_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "bar_deux_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "bar_deux_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "bar_deux", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 3000, 
+            "x": 2000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar_deux", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "bar_deux_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "foo_deux", 
+        "b", 
+        "b_deux"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 1, 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 1000, 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "bar_deux": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo_deux", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_deux_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "bar_deux", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "b_deux": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          3
+        ], 
+        "foo_deux": [
+          "REF", 
+          2
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo_deux(y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(x)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "bar_deux(x)", 
+          2
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure2.txt b/v3/example-code/closures/closure2.txt
new file mode 100644
index 000000000..dd036ff92
--- /dev/null
+++ b/v3/example-code/closures/closure2.txt
@@ -0,0 +1,15 @@
+def foo(y):
+    def bar(x):
+        return x + y
+    return bar
+
+def foo_deux(y):
+    def bar_deux(x):
+        return x + y
+    return bar_deux
+
+b = foo(1)
+b_deux = foo_deux(1000)
+
+b(2)    
+b_deux(2000)
diff --git a/v3/example-code/closures/closure3.golden b/v3/example-code/closures/closure3.golden
new file mode 100644
index 000000000..7a968114d
--- /dev/null
+++ b/v3/example-code/closures/closure3.golden
@@ -0,0 +1,1400 @@
+{
+  "code": "def foo(x):\n    def bar(y):\n        def baz(z):\n            return len(x) + len(y) + len(z)\n        return baz\n    return bar([4,5,6,7])\n\nl = [1,2,3]\nx = foo(l)\nx([8,9,10,11,12])\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "baz"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "z": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ], 
+        "6": [
+          "LIST", 
+          8, 
+          9, 
+          10, 
+          11, 
+          12
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "z": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ], 
+        "6": [
+          "LIST", 
+          8, 
+          9, 
+          10, 
+          11, 
+          12
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 12, 
+            "z": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ], 
+        "6": [
+          "LIST", 
+          8, 
+          9, 
+          10, 
+          11, 
+          12
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure3.golden_py3 b/v3/example-code/closures/closure3.golden_py3
new file mode 100644
index 000000000..7a968114d
--- /dev/null
+++ b/v3/example-code/closures/closure3.golden_py3
@@ -0,0 +1,1400 @@
+{
+  "code": "def foo(x):\n    def bar(y):\n        def baz(z):\n            return len(x) + len(y) + len(z)\n        return baz\n    return bar([4,5,6,7])\n\nl = [1,2,3]\nx = foo(l)\nx([8,9,10,11,12])\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "baz"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "z": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ], 
+        "6": [
+          "LIST", 
+          8, 
+          9, 
+          10, 
+          11, 
+          12
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "z": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ], 
+        "6": [
+          "LIST", 
+          8, 
+          9, 
+          10, 
+          11, 
+          12
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "baz", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 12, 
+            "z": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "baz", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "baz_f3", 
+          "ordered_varnames": [
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ], 
+        "6": [
+          "LIST", 
+          8, 
+          9, 
+          10, 
+          11, 
+          12
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "l", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": [
+              "REF", 
+              2
+            ], 
+            "bar": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "bar", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "baz": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "bar", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "bar_f2_p_z", 
+          "ordered_varnames": [
+            "y", 
+            "baz", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar(y)", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "5": [
+          "FUNCTION", 
+          "baz(z)", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure3.txt b/v3/example-code/closures/closure3.txt
new file mode 100644
index 000000000..9a34ed2d1
--- /dev/null
+++ b/v3/example-code/closures/closure3.txt
@@ -0,0 +1,10 @@
+def foo(x):
+    def bar(y):
+        def baz(z):
+            return len(x) + len(y) + len(z)
+        return baz
+    return bar([4,5,6,7])
+
+l = [1,2,3]
+x = foo(l)
+x([8,9,10,11,12])
diff --git a/v3/example-code/closures/closure4.golden b/v3/example-code/closures/closure4.golden
new file mode 100644
index 000000000..d26bb55af
--- /dev/null
+++ b/v3/example-code/closures/closure4.golden
@@ -0,0 +1,1457 @@
+{
+  "code": "def f(x):\n    def g(y):\n        return x + y\n    return g\n\ng1 = f(1)\ng2 = f(2)\ng1(3) + g2(4)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 3, 
+            "__return__": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f3", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 4, 
+            "__return__": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure4.golden_py3 b/v3/example-code/closures/closure4.golden_py3
new file mode 100644
index 000000000..d26bb55af
--- /dev/null
+++ b/v3/example-code/closures/closure4.golden_py3
@@ -0,0 +1,1457 @@
+{
+  "code": "def f(x):\n    def g(y):\n        return x + y\n    return g\n\ng1 = f(1)\ng2 = f(2)\ng1(3) + g2(4)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 3, 
+            "__return__": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f3", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 4, 
+            "__return__": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "g1", 
+        "g2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 2, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g2": [
+          "REF", 
+          3
+        ], 
+        "g1": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g(y)", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure4.txt b/v3/example-code/closures/closure4.txt
new file mode 100644
index 000000000..664625712
--- /dev/null
+++ b/v3/example-code/closures/closure4.txt
@@ -0,0 +1,8 @@
+def f(x):
+    def g(y):
+        return x + y
+    return g
+
+g1 = f(1)
+g2 = f(2)
+g1(3) + g2(4)
diff --git a/v3/example-code/closures/closure5.golden b/v3/example-code/closures/closure5.golden
new file mode 100644
index 000000000..a9cf39d66
--- /dev/null
+++ b/v3/example-code/closures/closure5.golden
@@ -0,0 +1,7684 @@
+{
+  "code": "def f(x):\n    def g(y, z):\n        if z == 0:\n            return y\n        return g(x+y+z, z-1)\n    return lambda: g(0, x)\n\nfoo = f(3)\nbar = f(4)\nbaz = foo() + bar()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "__return__": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "__return__": 15, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "__return__": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "__return__": 15, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "__return__": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "__return__": 26, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "__return__": 26, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "__return__": 26, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "__return__": 26, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 26
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar", 
+        "baz"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "baz": 41, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure5.golden_py3 b/v3/example-code/closures/closure5.golden_py3
new file mode 100644
index 000000000..a9cf39d66
--- /dev/null
+++ b/v3/example-code/closures/closure5.golden_py3
@@ -0,0 +1,7684 @@
+{
+  "code": "def f(x):\n    def g(y, z):\n        if z == 0:\n            return y\n        return g(x+y+z, z-1)\n    return lambda: g(0, x)\n\nfoo = f(3)\nbar = f(4)\nbaz = foo() + bar()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "y": 15, 
+            "__return__": 15, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f7", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "y": 11, 
+            "__return__": 15, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f6", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 6, 
+            "__return__": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f5", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 0, 
+            "__return__": 15, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 6>_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "z": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "y": 26, 
+            "__return__": 26, 
+            "z": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f13", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "z": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "y": 21, 
+            "__return__": 26, 
+            "z": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f12", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "z": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "y": 15, 
+            "__return__": 26, 
+            "z": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f11", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "z": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "y": 8, 
+            "__return__": 26, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f10", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "y": 0, 
+            "__return__": 26, 
+            "z": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "g_f9", 
+          "ordered_varnames": [
+            "y", 
+            "z", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 26
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 6>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 6>_f8", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "foo", 
+        "bar", 
+        "baz"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 4, 
+            "g": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "foo": [
+          "REF", 
+          3
+        ], 
+        "baz": 41, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(y, z)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "g(y, z)", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 6>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/closure5.txt b/v3/example-code/closures/closure5.txt
new file mode 100644
index 000000000..df094d247
--- /dev/null
+++ b/v3/example-code/closures/closure5.txt
@@ -0,0 +1,10 @@
+def f(x):
+    def g(y, z):
+        if z == 0:
+            return y
+        return g(x+y+z, z-1)
+    return lambda: g(0, x)
+
+foo = f(3)
+bar = f(4)
+baz = foo() + bar()
diff --git a/v3/example-code/closures/lambda-param.golden b/v3/example-code/closures/lambda-param.golden
new file mode 100644
index 000000000..0160bb7be
--- /dev/null
+++ b/v3/example-code/closures/lambda-param.golden
@@ -0,0 +1,758 @@
+{
+  "code": "def foo(x):\n  bar(lambda y: x + y)\n\ndef bar(a):\n  print(a(20))\n\nfoo(10)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 20, 
+            "__return__": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "30\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "30\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "30\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/lambda-param.golden_py3 b/v3/example-code/closures/lambda-param.golden_py3
new file mode 100644
index 000000000..0160bb7be
--- /dev/null
+++ b/v3/example-code/closures/lambda-param.golden_py3
@@ -0,0 +1,758 @@
+{
+  "code": "def foo(x):\n  bar(lambda y: x + y)\n\ndef bar(a):\n  print(a(20))\n\nfoo(10)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 20, 
+            "__return__": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "30\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(y) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "30\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "30\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "foo", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "bar(a)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/lambda-param.txt b/v3/example-code/closures/lambda-param.txt
new file mode 100644
index 000000000..4944f2c20
--- /dev/null
+++ b/v3/example-code/closures/lambda-param.txt
@@ -0,0 +1,7 @@
+def foo(x):
+  bar(lambda y: x + y)
+
+def bar(a):
+  print(a(20))
+
+foo(10)
diff --git a/v3/example-code/closures/student-torture.golden b/v3/example-code/closures/student-torture.golden
new file mode 100644
index 000000000..bb48036aa
--- /dev/null
+++ b/v3/example-code/closures/student-torture.golden
@@ -0,0 +1,11 @@
+{
+  "code": "# Example to torture students\n# from UC Berkeley CS61a\n# (only works in Python 3)\n\ndef f(t):\n    def g(t):\n        def h():\n            nonlocal t\n            t += 1\n        return h, lambda: t\n    h, gt = g(0)\n    return h, gt, lambda: t\n\nh, gt, ft = f(0)\nft(), gt()\nh()\nft(), gt()\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 8)", 
+      "line": 8, 
+      "event": "uncaught_exception", 
+      "offset": 22
+    }
+  ]
+}
diff --git a/v3/example-code/closures/student-torture.golden_py3 b/v3/example-code/closures/student-torture.golden_py3
new file mode 100644
index 000000000..7e66f0e0d
--- /dev/null
+++ b/v3/example-code/closures/student-torture.golden_py3
@@ -0,0 +1,3726 @@
+{
+  "code": "# Example to torture students\n# from UC Berkeley CS61a\n# (only works in Python 3)\n\ndef f(t):\n    def g(t):\n        def h():\n            nonlocal t\n            t += 1\n        return h, lambda: t\n    h, gt = g(0)\n    return h, gt, lambda: t\n\nh, gt, ft = f(0)\nft(), gt()\nh()\nft(), gt()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p", 
+          "ordered_varnames": [
+            "t", 
+            "h"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "h", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "h", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "h_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "h", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "h", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "h_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "h", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "h", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "h_f5", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f6", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 10>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 12>", 
+          1
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/closures/student-torture.txt b/v3/example-code/closures/student-torture.txt
new file mode 100644
index 000000000..c4fa0a10e
--- /dev/null
+++ b/v3/example-code/closures/student-torture.txt
@@ -0,0 +1,17 @@
+# Example to torture students
+# from UC Berkeley CS61a
+# (only works in Python 3)
+
+def f(t):
+    def g(t):
+        def h():
+            nonlocal t
+            t += 1
+        return h, lambda: t
+    h, gt = g(0)
+    return h, gt, lambda: t
+
+h, gt, ft = f(0)
+ft(), gt()
+h()
+ft(), gt()
diff --git a/v3/example-code/comprehensions.golden b/v3/example-code/comprehensions.golden
new file mode 100644
index 000000000..5e486bba9
--- /dev/null
+++ b/v3/example-code/comprehensions.golden
@@ -0,0 +1,1873 @@
+{
+  "code": "# list comprehension\nl = [e**e for e in range(10) if e%2==0]\n# set comprehension\ns = {e**e for e in range(10) if e%2==0}\n# dict comprehension\nd = {e: e**e for e in range(10) if e%2==0}\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 0
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 1
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 2
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 3
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 4
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 6
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 7
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 8
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 9
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ], 
+        "5": [
+          "DICT", 
+          [
+            0, 
+            1
+          ], 
+          [
+            8, 
+            16777216
+          ], 
+          [
+            2, 
+            4
+          ], 
+          [
+            4, 
+            256
+          ], 
+          [
+            6, 
+            46656
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "e", 
+        "l", 
+        "s", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "s": [
+          "REF", 
+          3
+        ], 
+        "e": 9, 
+        "d": [
+          "REF", 
+          5
+        ], 
+        "l": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "DICT", 
+          [
+            0, 
+            1
+          ], 
+          [
+            8, 
+            16777216
+          ], 
+          [
+            2, 
+            4
+          ], 
+          [
+            4, 
+            256
+          ], 
+          [
+            6, 
+            46656
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/comprehensions.golden_py3 b/v3/example-code/comprehensions.golden_py3
new file mode 100644
index 000000000..a298f236c
--- /dev/null
+++ b/v3/example-code/comprehensions.golden_py3
@@ -0,0 +1,2152 @@
+{
+  "code": "# list comprehension\nl = [e**e for e in range(10) if e%2==0]\n# set comprehension\ns = {e**e for e in range(10) if e%2==0}\n# dict comprehension\nd = {e: e**e for e in range(10) if e%2==0}\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              1
+            ], 
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {}, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range_iterator"
+        ], 
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<setcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<setcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<setcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "3": [
+          "INSTANCE", 
+          "range_iterator"
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<dictcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              5
+            ], 
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "e": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<dictcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<dictcomp>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "5": [
+          "INSTANCE", 
+          "range_iterator"
+        ], 
+        "6": [
+          "DICT", 
+          [
+            0, 
+            1
+          ], 
+          [
+            8, 
+            16777216
+          ], 
+          [
+            2, 
+            4
+          ], 
+          [
+            4, 
+            256
+          ], 
+          [
+            6, 
+            46656
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "l", 
+        "s", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "s": [
+          "REF", 
+          4
+        ], 
+        "d": [
+          "REF", 
+          6
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          1, 
+          4, 
+          256, 
+          46656, 
+          16777216
+        ], 
+        "4": [
+          "SET", 
+          256, 
+          1, 
+          4, 
+          46656, 
+          16777216
+        ], 
+        "6": [
+          "DICT", 
+          [
+            0, 
+            1
+          ], 
+          [
+            8, 
+            16777216
+          ], 
+          [
+            2, 
+            4
+          ], 
+          [
+            4, 
+            256
+          ], 
+          [
+            6, 
+            46656
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/comprehensions.txt b/v3/example-code/comprehensions.txt
new file mode 100644
index 000000000..31a29ed73
--- /dev/null
+++ b/v3/example-code/comprehensions.txt
@@ -0,0 +1,6 @@
+# list comprehension
+l = [e**e for e in range(10) if e%2==0]
+# set comprehension
+s = {e**e for e in range(10) if e%2==0}
+# dict comprehension
+d = {e: e**e for e in range(10) if e%2==0}
diff --git a/v3/example-code/decorators.golden b/v3/example-code/decorators.golden
new file mode 100644
index 000000000..bcd1bcf21
--- /dev/null
+++ b/v3/example-code/decorators.golden
@@ -0,0 +1,1892 @@
+{
+  "code": "def make_bold(fn):\n    return lambda : \"<b>\" + fn() + \"</b>\"\n\ndef make_italic(fn):\n    return lambda : \"<i>\" + fn() + \"</i>\"\n\n@make_bold\n@make_italic\ndef hello():\n  return \"hello world\"\n  \nhelloHTML = hello()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_italic", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_italic", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_italic", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_italic", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_italic", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_bold", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_bold", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_bold", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_bold", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_bold", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "hello", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "hello", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "hello_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "hello", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "hello", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "hello_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "hello", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": "hello world"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "hello", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "hello_f5", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": "<i>hello world</i>"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": "<b><i>hello world</i></b>"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello", 
+        "helloHTML"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ], 
+        "helloHTML": "<b><i>hello world</i></b>"
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/decorators.golden_py3 b/v3/example-code/decorators.golden_py3
new file mode 100644
index 000000000..bcd1bcf21
--- /dev/null
+++ b/v3/example-code/decorators.golden_py3
@@ -0,0 +1,1892 @@
+{
+  "code": "def make_bold(fn):\n    return lambda : \"<b>\" + fn() + \"</b>\"\n\ndef make_italic(fn):\n    return lambda : \"<i>\" + fn() + \"</i>\"\n\n@make_bold\n@make_italic\ndef hello():\n  return \"hello world\"\n  \nhelloHTML = hello()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_italic", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_italic", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_italic", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_italic", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_italic", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_bold", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_bold", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_bold", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "make_bold", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2", 
+          "ordered_varnames": [
+            "fn"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic"
+      ], 
+      "stdout": "", 
+      "func_name": "make_bold", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "hello", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "hello", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "hello_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "hello", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "hello", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "hello_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "hello", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": "hello world"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "hello", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "hello_f5", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": "<i>hello world</i>"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 5>_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": "<b><i>hello world</i></b>"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 2>_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "make_bold", 
+        "make_italic", 
+        "hello", 
+        "helloHTML"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "fn": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_italic", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_italic_f1_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "fn": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "make_bold", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "make_bold_f2_p_z", 
+          "ordered_varnames": [
+            "fn", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "make_bold": [
+          "REF", 
+          1
+        ], 
+        "make_italic": [
+          "REF", 
+          2
+        ], 
+        "hello": [
+          "REF", 
+          5
+        ], 
+        "helloHTML": "<b><i>hello world</i></b>"
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "make_bold(fn)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "make_italic(fn)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "hello()", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>() <line 5>", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 2>", 
+          2
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/decorators.txt b/v3/example-code/decorators.txt
new file mode 100644
index 000000000..b267bac5f
--- /dev/null
+++ b/v3/example-code/decorators.txt
@@ -0,0 +1,12 @@
+def make_bold(fn):
+    return lambda : "<b>" + fn() + "</b>"
+
+def make_italic(fn):
+    return lambda : "<i>" + fn() + "</i>"
+
+@make_bold
+@make_italic
+def hello():
+  return "hello world"
+  
+helloHTML = hello()
diff --git a/v3/example-code/fact.golden b/v3/example-code/fact.golden
new file mode 100644
index 000000000..6f756d707
--- /dev/null
+++ b/v3/example-code/fact.golden
@@ -0,0 +1,1909 @@
+{
+  "code": "# dumb recursive factorial\ndef fact(n):\n    if (n <= 1):\n        return 1\n    else:\n        return n * fact(n - 1)\n\nprint(fact(6))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 24, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 120, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 720, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "720\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/fact.golden_py3 b/v3/example-code/fact.golden_py3
new file mode 100644
index 000000000..6f756d707
--- /dev/null
+++ b/v3/example-code/fact.golden_py3
@@ -0,0 +1,1909 @@
+{
+  "code": "# dumb recursive factorial\ndef fact(n):\n    if (n <= 1):\n        return 1\n    else:\n        return n * fact(n - 1)\n\nprint(fact(6))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f6", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f5", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f4", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 24, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f3", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 120, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f2", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "", 
+      "func_name": "fact", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 720, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "fact", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "fact_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "fact"
+      ], 
+      "stdout": "720\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "fact": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "fact(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/fact.txt b/v3/example-code/fact.txt
similarity index 88%
rename from example-code/fact.txt
rename to v3/example-code/fact.txt
index d956324b0..a6b6f446f 100644
--- a/example-code/fact.txt
+++ b/v3/example-code/fact.txt
@@ -5,4 +5,4 @@ def fact(n):
     else:
         return n * fact(n - 1)
 
-print fact(6)
+print(fact(6))
diff --git a/v3/example-code/fib.golden b/v3/example-code/fib.golden
new file mode 100644
index 000000000..7afe29d04
--- /dev/null
+++ b/v3/example-code/fib.golden
@@ -0,0 +1,7545 @@
+{
+  "code": "# Infinite Fibonacci!!!\n\narr = [1, 1]\n\nprint(arr[0])\n\nwhile True:\n    print(arr[-1])\n    tmp = sum(arr)\n    arr.append(tmp)\n    del arr[0]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1, 
+          2
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          5
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5, 
+          8
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8, 
+          13
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13, 
+          21
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21, 
+          34
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34, 
+          55
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55, 
+          89
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89, 
+          144
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144, 
+          233
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233, 
+          377
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377, 
+          610
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610, 
+          987
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/example-code/fib.golden_py3 b/v3/example-code/fib.golden_py3
new file mode 100644
index 000000000..55c3b980b
--- /dev/null
+++ b/v3/example-code/fib.golden_py3
@@ -0,0 +1,7560 @@
+{
+  "code": "# Infinite Fibonacci!!!\n\narr = [1, 1]\n\nprint(arr[0])\n\nwhile True:\n    print(arr[-1])\n    tmp = sum(arr)\n    arr.append(tmp)\n    del arr[0]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1, 
+          2
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          5
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5, 
+          8
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8, 
+          13
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13, 
+          21
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21, 
+          34
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34, 
+          55
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55, 
+          89
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89, 
+          144
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144, 
+          233
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233, 
+          377
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377, 
+          610
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610, 
+          987
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3416454622906707, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3416454622906707, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050, 
+          3416454622906707
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3416454622906707, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2111485077978050, 
+          3416454622906707
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/example-code/fib.txt b/v3/example-code/fib.txt
similarity index 76%
rename from example-code/fib.txt
rename to v3/example-code/fib.txt
index 96c8799c2..d5447f19b 100644
--- a/example-code/fib.txt
+++ b/v3/example-code/fib.txt
@@ -2,10 +2,10 @@
 
 arr = [1, 1]
 
-print arr[0]
+print(arr[0])
 
 while True:
-    print arr[-1]
+    print(arr[-1])
     tmp = sum(arr)
     arr.append(tmp)
     del arr[0]
diff --git a/v3/example-code/filter.golden b/v3/example-code/filter.golden
new file mode 100644
index 000000000..1e1111344
--- /dev/null
+++ b/v3/example-code/filter.golden
@@ -0,0 +1,1505 @@
+{
+  "code": "input = [(\"Mary\", 27), (\"Joe\", 30), (\"Ruth\", 43), (\"Bob\", 17), (\"Jenny\", 22)]\n\nyoungPeople = []\n\nfor (person, age) in input:\n    if age < 30:\n        youngPeople.append(person)\n    else:\n        print(\"HAHA \" + person + \" is too old!\")\n\nprint(\"There are \" + str(len(youngPeople)) + \" young people\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          1
+        ], 
+        "youngPeople": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Mary", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 27, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Mary", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 27, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Mary", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 27, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Joe", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 30, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Joe", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 30, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Joe", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 30, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Ruth", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 43, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Ruth", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 43, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Ruth", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 43, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Bob", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 17, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Bob", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 17, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Bob", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 17, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob", 
+          "Jenny"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob", 
+          "Jenny"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\nThere are 3 young people\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob", 
+          "Jenny"
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/filter.golden_py3 b/v3/example-code/filter.golden_py3
new file mode 100644
index 000000000..1e1111344
--- /dev/null
+++ b/v3/example-code/filter.golden_py3
@@ -0,0 +1,1505 @@
+{
+  "code": "input = [(\"Mary\", 27), (\"Joe\", 30), (\"Ruth\", 43), (\"Bob\", 17), (\"Jenny\", 22)]\n\nyoungPeople = []\n\nfor (person, age) in input:\n    if age < 30:\n        youngPeople.append(person)\n    else:\n        print(\"HAHA \" + person + \" is too old!\")\n\nprint(\"There are \" + str(len(youngPeople)) + \" young people\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          1
+        ], 
+        "youngPeople": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Mary", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 27, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Mary", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 27, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Mary", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 27, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Joe", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 30, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Joe", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 30, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Joe", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 30, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Ruth", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 43, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Ruth", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 43, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Ruth", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 43, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Bob", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 17, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Bob", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 17, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Bob", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 17, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob", 
+          "Jenny"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob", 
+          "Jenny"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "youngPeople", 
+        "person", 
+        "age"
+      ], 
+      "stdout": "HAHA Joe is too old!\nHAHA Ruth is too old!\nThere are 3 young people\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "person": "Jenny", 
+        "youngPeople": [
+          "REF", 
+          7
+        ], 
+        "age": 22, 
+        "input": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            4
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            6
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Mary", 
+          27
+        ], 
+        "3": [
+          "TUPLE", 
+          "Joe", 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          "Ruth", 
+          43
+        ], 
+        "5": [
+          "TUPLE", 
+          "Bob", 
+          17
+        ], 
+        "6": [
+          "TUPLE", 
+          "Jenny", 
+          22
+        ], 
+        "7": [
+          "LIST", 
+          "Mary", 
+          "Bob", 
+          "Jenny"
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/filter.txt b/v3/example-code/filter.txt
similarity index 62%
rename from example-code/filter.txt
rename to v3/example-code/filter.txt
index f3b3916fb..e09de854c 100644
--- a/example-code/filter.txt
+++ b/v3/example-code/filter.txt
@@ -6,6 +6,6 @@ for (person, age) in input:
     if age < 30:
         youngPeople.append(person)
     else:
-        print "HAHA", person, "is too old!"
+        print("HAHA " + person + " is too old!")
 
-print "There are", len(youngPeople), "young people"
+print("There are " + str(len(youngPeople)) + " young people")
diff --git a/v3/example-code/for-else.golden b/v3/example-code/for-else.golden
new file mode 100644
index 000000000..479a67f6f
--- /dev/null
+++ b/v3/example-code/for-else.golden
@@ -0,0 +1,1634 @@
+{
+  "code": "# find primes using a for-else construct\nfor n in range(2, 10):\n    x_range = range(2, n)\n    for x in x_range:\n        if n % x == 0:\n            break\n    else:\n        # loop fell through without finding a factor\n        print(n)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "n": 2
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 3
+      }, 
+      "heap": {
+        "1": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 3
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 3
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 6, 
+        "x": 4
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 4
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 5
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 5
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 8, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 6
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          3
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          8
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/for-else.golden_py3 b/v3/example-code/for-else.golden_py3
new file mode 100644
index 000000000..ad8845399
--- /dev/null
+++ b/v3/example-code/for-else.golden_py3
@@ -0,0 +1,1475 @@
+{
+  "code": "# find primes using a for-else construct\nfor n in range(2, 10):\n    x_range = range(2, n)\n    for x in x_range:\n        if n % x == 0:\n            break\n    else:\n        # loop fell through without finding a factor\n        print(n)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "n": 2
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 3
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 3, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 4, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 5, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 6, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 4
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 6, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 4
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 5
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 5
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 7, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 8, 
+        "x": 6
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 6
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 8, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          1
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 2
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "n", 
+        "x_range", 
+        "x"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_range": [
+          "REF", 
+          2
+        ], 
+        "n": 9, 
+        "x": 3
+      }, 
+      "heap": {
+        "2": [
+          "INSTANCE", 
+          "range"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/for-else.txt b/v3/example-code/for-else.txt
new file mode 100644
index 000000000..1eaf5fff7
--- /dev/null
+++ b/v3/example-code/for-else.txt
@@ -0,0 +1,9 @@
+# find primes using a for-else construct
+for n in range(2, 10):
+    x_range = range(2, n)
+    for x in x_range:
+        if n % x == 0:
+            break
+    else:
+        # loop fell through without finding a factor
+        print(n)
diff --git a/v3/example-code/gen_primes.golden b/v3/example-code/gen_primes.golden
new file mode 100644
index 000000000..480ece9bb
--- /dev/null
+++ b/v3/example-code/gen_primes.golden
@@ -0,0 +1,12544 @@
+{
+  "code": "# Use generator to generate a stream of primes\ndef gen_primes():\n    n = 2\n    while True:\n        for x in range(2, n):\n            if n % x == 0:\n                break\n        else:\n            yield n\n        n += 1\n\nfor p in gen_primes():\n    print(p)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 7, 
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 11, 
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 17, 
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 19, 
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 19, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 19, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 20, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/example-code/gen_primes.golden_py3 b/v3/example-code/gen_primes.golden_py3
new file mode 100644
index 000000000..802f27735
--- /dev/null
+++ b/v3/example-code/gen_primes.golden_py3
@@ -0,0 +1,12512 @@
+{
+  "code": "# Use generator to generate a stream of primes\ndef gen_primes():\n    n = 2\n    while True:\n        for x in range(2, n):\n            if n % x == 0:\n                break\n        else:\n            yield n\n        n += 1\n\nfor p in gen_primes():\n    print(p)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 2, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 3, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 7, 
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 5, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 11, 
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f5", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 7, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f6", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 11, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 14
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 16
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 17, 
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f7", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 13, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 18
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 19, 
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f8", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 17, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 22
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 6, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 7, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 9, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 11, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 12, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 13, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 14, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 16, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 18, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 19, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 19, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 20, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 20, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 21, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 21, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 22, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 22, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 22, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 23, 
+            "x": 22, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f9", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 19, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 22, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 22, 
+            "n": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 22, 
+            "n": 24
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 24
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 24
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 24
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_primes", 
+        "p"
+      ], 
+      "stdout": "2\n3\n5\n7\n11\n13\n17\n19\n23\n", 
+      "func_name": "gen_primes", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4, 
+            "n": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_primes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_primes_f10", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": 23, 
+        "gen_primes": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_primes()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/example-code/gen_primes.txt b/v3/example-code/gen_primes.txt
new file mode 100644
index 000000000..2b047187b
--- /dev/null
+++ b/v3/example-code/gen_primes.txt
@@ -0,0 +1,14 @@
+# Use generator to generate a stream of primes
+def gen_primes():
+    n = 2
+    while True:
+        for x in range(2, n):
+            if n % x == 0:
+                break
+        else:
+            yield n
+        n += 1
+
+for p in gen_primes():
+    print(p)
+
diff --git a/v3/example-code/genexpr.golden b/v3/example-code/genexpr.golden
new file mode 100644
index 000000000..aebc24d6d
--- /dev/null
+++ b/v3/example-code/genexpr.golden
@@ -0,0 +1,2170 @@
+{
+  "code": "# NB: there's a known bug when frames of exited functions are displayed\nx = (i for i in range(10))\n\nfor e in x:\n    print(e)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "__return__": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "__return__": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f4", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f4", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "__return__": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f4", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f5", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f5", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "__return__": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f5", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f6", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f6", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f6", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f7", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f7", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 6, 
+            "__return__": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f7", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f8", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f8", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 7, 
+            "__return__": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f8", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f9", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f9", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 8, 
+            "__return__": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f9", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f10", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f10", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9, 
+            "__return__": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f10", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f11", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f11", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9, 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f11", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "listiterator", 
+          "<listiterator object at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/genexpr.golden_py3 b/v3/example-code/genexpr.golden_py3
new file mode 100644
index 000000000..10ad0ebac
--- /dev/null
+++ b/v3/example-code/genexpr.golden_py3
@@ -0,0 +1,2170 @@
+{
+  "code": "# NB: there's a known bug when frames of exited functions are displayed\nx = (i for i in range(10))\n\nfor e in x:\n    print(e)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "__return__": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 0
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "__return__": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f3", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 1
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f4", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f4", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "__return__": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f4", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 2
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f5", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f5", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "__return__": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f5", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 3
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f6", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f6", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f6", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 4
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f7", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f7", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 6, 
+            "__return__": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f7", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 5
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f8", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f8", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 7, 
+            "__return__": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f8", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 6
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f9", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f9", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 8, 
+            "__return__": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f9", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 7
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f10", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f10", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9, 
+            "__return__": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f10", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 8
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f11", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f11", 
+          "ordered_varnames": [
+            ".0", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<genexpr>", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "i": 9, 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<genexpr>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<genexpr>_f11", 
+          "ordered_varnames": [
+            ".0", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "range_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "e"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": 9
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/genexpr.txt b/v3/example-code/genexpr.txt
new file mode 100644
index 000000000..46bac3e62
--- /dev/null
+++ b/v3/example-code/genexpr.txt
@@ -0,0 +1,5 @@
+# NB: there's a known bug when frames of exited functions are displayed
+x = (i for i in range(10))
+
+for e in x:
+    print(e)
diff --git a/v3/example-code/happy.golden b/v3/example-code/happy.golden
new file mode 100644
index 000000000..ea1a6a7e0
--- /dev/null
+++ b/v3/example-code/happy.golden
@@ -0,0 +1,952 @@
+{
+  "code": "# From \"Teaching with Python\" by John Zelle\ndef happy():\n    print(\"Happy Birthday to you!\")\n\ndef sing(P):\n    happy()\n    happy()\n    print(\"Happy Birthday dear \" + P + \"!\")\n    happy()\n\n# main\nsing(\"Fred\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/happy.golden_py3 b/v3/example-code/happy.golden_py3
new file mode 100644
index 000000000..ea1a6a7e0
--- /dev/null
+++ b/v3/example-code/happy.golden_py3
@@ -0,0 +1,952 @@
+{
+  "code": "# From \"Teaching with Python\" by John Zelle\ndef happy():\n    print(\"Happy Birthday to you!\")\n\ndef sing(P):\n    happy()\n    happy()\n    print(\"Happy Birthday dear \" + P + \"!\")\n    happy()\n\n# main\nsing(\"Fred\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", 
+      "func_name": "happy", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "P": "Fred"
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "happy", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "happy_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", 
+      "func_name": "sing", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "P": "Fred"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sing", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sing_f1", 
+          "ordered_varnames": [
+            "P", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "happy", 
+        "sing"
+      ], 
+      "stdout": "Happy Birthday to you!\nHappy Birthday to you!\nHappy Birthday dear Fred!\nHappy Birthday to you!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sing": [
+          "REF", 
+          2
+        ], 
+        "happy": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "happy()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sing(P)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/happy.txt b/v3/example-code/happy.txt
new file mode 100644
index 000000000..c2dd73280
--- /dev/null
+++ b/v3/example-code/happy.txt
@@ -0,0 +1,12 @@
+# From "Teaching with Python" by John Zelle
+def happy():
+    print("Happy Birthday to you!")
+
+def sing(P):
+    happy()
+    happy()
+    print("Happy Birthday dear " + P + "!")
+    happy()
+
+# main
+sing("Fred")
diff --git a/v3/example-code/ins_sort.golden b/v3/example-code/ins_sort.golden
new file mode 100644
index 000000000..837933f43
--- /dev/null
+++ b/v3/example-code/ins_sort.golden
@@ -0,0 +1,3538 @@
+{
+  "code": "# from: http://www.ece.uci.edu/~chou/py02/python.html\ndef InsertionSort(A):\n    for j in range(1, len(A)):\n        key = A[j]\n        i = j - 1\n        while (i >= 0) and (A[i] > key):\n            A[i+1] = A[i]\n            i = i - 1\n        A[i+1] = key\n\ninput = [8, 3, 9, 15, 29, 7, 10]\nInsertionSort(input)\nprint(input)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "j": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 2, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 3, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 4, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 6, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "__return__": null, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "[3, 7, 8, 9, 10, 15, 29]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 13, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/ins_sort.golden_py3 b/v3/example-code/ins_sort.golden_py3
new file mode 100644
index 000000000..837933f43
--- /dev/null
+++ b/v3/example-code/ins_sort.golden_py3
@@ -0,0 +1,3538 @@
+{
+  "code": "# from: http://www.ece.uci.edu/~chou/py02/python.html\ndef InsertionSort(A):\n    for j in range(1, len(A)):\n        key = A[j]\n        i = j - 1\n        while (i >= 0) and (A[i] > key):\n            A[i+1] = A[i]\n            i = i - 1\n        A[i+1] = key\n\ninput = [8, 3, 9, 15, 29, 7, 10]\nInsertionSort(input)\nprint(input)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "j": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          3, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 1, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 2, 
+            "key": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": -1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 2, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 3, 
+            "key": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 3, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 4, 
+            "key": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 4, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          7, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 2, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          9, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 1, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          8, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 5, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 6, 
+            "key": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 0, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          10
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 5, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          29, 
+          29
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 4, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          15, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "InsertionSort", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "A": [
+              "REF", 
+              2
+            ], 
+            "i": 3, 
+            "__return__": null, 
+            "j": 6, 
+            "key": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "InsertionSort", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "InsertionSort_f1", 
+          "ordered_varnames": [
+            "A", 
+            "j", 
+            "key", 
+            "i", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "InsertionSort", 
+        "input"
+      ], 
+      "stdout": "[3, 7, 8, 9, 10, 15, 29]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": [
+          "REF", 
+          2
+        ], 
+        "InsertionSort": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "InsertionSort(A)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          7, 
+          8, 
+          9, 
+          10, 
+          15, 
+          29
+        ]
+      }, 
+      "line": 13, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/ins_sort.txt b/v3/example-code/ins_sort.txt
similarity index 95%
rename from example-code/ins_sort.txt
rename to v3/example-code/ins_sort.txt
index d6598fae2..4c2dacc0f 100644
--- a/example-code/ins_sort.txt
+++ b/v3/example-code/ins_sort.txt
@@ -10,4 +10,4 @@ def InsertionSort(A):
 
 input = [8, 3, 9, 15, 29, 7, 10]
 InsertionSort(input)
-print input
+print(input)
diff --git a/v3/example-code/linked-lists/ll1.golden b/v3/example-code/linked-lists/ll1.golden
new file mode 100644
index 000000000..1da0bbfb2
--- /dev/null
+++ b/v3/example-code/linked-lists/ll1.golden
@@ -0,0 +1,1977 @@
+{
+  "code": "# use lists\nx = None\nfor i in range(6, 0, -1):\n  x = [i, x]\n\n# use tuples\ny = None\nfor i in range(6, 0, -1):\n  y = (i, y)\n\nx[1][0]=y[1][1] # courtesy of John DeNero!\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": null
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": null
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          8
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          8
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          9
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          9
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          10
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          10
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          11
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          11
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          12
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ], 
+        "12": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            11
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          12
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ], 
+        "12": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            11
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ], 
+        "12": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            11
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/linked-lists/ll1.golden_py3 b/v3/example-code/linked-lists/ll1.golden_py3
new file mode 100644
index 000000000..1da0bbfb2
--- /dev/null
+++ b/v3/example-code/linked-lists/ll1.golden_py3
@@ -0,0 +1,1977 @@
+{
+  "code": "# use lists\nx = None\nfor i in range(6, 0, -1):\n  x = [i, x]\n\n# use tuples\ny = None\nfor i in range(6, 0, -1):\n  y = (i, y)\n\nx[1][0]=y[1][1] # courtesy of John DeNero!\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": null
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": null
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          7
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          8
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          8
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          9
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          9
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          10
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          10
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          11
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          11
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          12
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ], 
+        "12": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            11
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ], 
+        "y": [
+          "REF", 
+          12
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ], 
+        "12": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            11
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6, 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          5, 
+          [
+            "REF", 
+            1
+          ]
+        ], 
+        "3": [
+          "LIST", 
+          4, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          3, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "6": [
+          "LIST", 
+          1, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          6, 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          5, 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "9": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            8
+          ]
+        ], 
+        "10": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            10
+          ]
+        ], 
+        "12": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            11
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/linked-lists/ll1.txt b/v3/example-code/linked-lists/ll1.txt
new file mode 100644
index 000000000..223f228be
--- /dev/null
+++ b/v3/example-code/linked-lists/ll1.txt
@@ -0,0 +1,12 @@
+# use lists
+x = None
+for i in range(6, 0, -1):
+  x = [i, x]
+
+# use tuples
+y = None
+for i in range(6, 0, -1):
+  y = (i, y)
+
+x[1][0]=y[1][1] # courtesy of John DeNero!
+
diff --git a/v3/example-code/linked-lists/ll2.golden b/v3/example-code/linked-lists/ll2.golden
new file mode 100644
index 000000000..4d47af384
--- /dev/null
+++ b/v3/example-code/linked-lists/ll2.golden
@@ -0,0 +1,8047 @@
+{
+  "code": "# use dicts\nx = None\nfor i in range(6, 0, -1):\n  x = {'data': i, 'next': x}\n\n# use objects\nclass Node:\n  def __init__(self, data, next):\n    self.data = data\n    self.next = next\n\ny = None\nfor i in range(6, 0, -1):\n  y = Node(i, y)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              13
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          14
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              13
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "y": [
+          "REF", 
+          14
+        ], 
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              13
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/linked-lists/ll2.golden_py3 b/v3/example-code/linked-lists/ll2.golden_py3
new file mode 100644
index 000000000..4d47af384
--- /dev/null
+++ b/v3/example-code/linked-lists/ll2.golden_py3
@@ -0,0 +1,8047 @@
+{
+  "code": "# use dicts\nx = None\nfor i in range(6, 0, -1):\n  x = {'data': i, 'next': x}\n\n# use objects\nclass Node:\n  def __init__(self, data, next):\n    self.data = data\n    self.next = next\n\ny = None\nfor i in range(6, 0, -1):\n  y = Node(i, y)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": null
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              9
+            ], 
+            "data": 6, 
+            "next": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": null, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 6, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              10
+            ], 
+            "data": 5, 
+            "next": [
+              "REF", 
+              9
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f2", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          9
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 5, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              11
+            ], 
+            "data": 4, 
+            "next": [
+              "REF", 
+              10
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          10
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 4, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              12
+            ], 
+            "data": 3, 
+            "next": [
+              "REF", 
+              11
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f4", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          11
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 3, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              13
+            ], 
+            "data": 2, 
+            "next": [
+              "REF", 
+              12
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f5", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          12
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 2, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              14
+            ], 
+            "data": 1, 
+            "next": [
+              "REF", 
+              13
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f6", 
+          "ordered_varnames": [
+            "self", 
+            "data", 
+            "next", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          13
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              13
+            ]
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "i": 1, 
+        "y": [
+          "REF", 
+          14
+        ], 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              13
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "Node", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Node": [
+          "REF", 
+          7
+        ], 
+        "y": [
+          "REF", 
+          14
+        ], 
+        "i": 1, 
+        "x": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "3": [
+          "DICT", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "Node", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "__init__(self, data, next)", 
+          null
+        ], 
+        "9": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            6
+          ], 
+          [
+            "next", 
+            null
+          ]
+        ], 
+        "10": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            5
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              9
+            ]
+          ]
+        ], 
+        "11": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            4
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              10
+            ]
+          ]
+        ], 
+        "12": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            3
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              11
+            ]
+          ]
+        ], 
+        "13": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            2
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              12
+            ]
+          ]
+        ], 
+        "14": [
+          "INSTANCE", 
+          "Node", 
+          [
+            "data", 
+            1
+          ], 
+          [
+            "next", 
+            [
+              "REF", 
+              13
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/linked-lists/ll2.txt b/v3/example-code/linked-lists/ll2.txt
new file mode 100644
index 000000000..3a1181499
--- /dev/null
+++ b/v3/example-code/linked-lists/ll2.txt
@@ -0,0 +1,15 @@
+# use dicts
+x = None
+for i in range(6, 0, -1):
+  x = {'data': i, 'next': x}
+
+# use objects
+class Node:
+  def __init__(self, data, next):
+    self.data = data
+    self.next = next
+
+y = None
+for i in range(6, 0, -1):
+  y = Node(i, y)
+
diff --git a/v3/example-code/list-comp.golden b/v3/example-code/list-comp.golden
new file mode 100644
index 000000000..6a4ea270a
--- /dev/null
+++ b/v3/example-code/list-comp.golden
@@ -0,0 +1,404 @@
+{
+  "code": "ppl = ['Alice', 'Bob', 'Carol', 'Doug']\nexcited_ppl = [e + '!!' for e in ppl]\nppl_len = [len(x) for x in ppl]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Alice", 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Bob", 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Carol", 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Doug", 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Doug", 
+        "excited_ppl": [
+          "REF", 
+          2
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e", 
+        "excited_ppl", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Doug", 
+        "ppl": [
+          "REF", 
+          1
+        ], 
+        "excited_ppl": [
+          "REF", 
+          2
+        ], 
+        "x": "Alice"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e", 
+        "excited_ppl", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Doug", 
+        "ppl": [
+          "REF", 
+          1
+        ], 
+        "excited_ppl": [
+          "REF", 
+          2
+        ], 
+        "x": "Bob"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e", 
+        "excited_ppl", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Doug", 
+        "ppl": [
+          "REF", 
+          1
+        ], 
+        "excited_ppl": [
+          "REF", 
+          2
+        ], 
+        "x": "Carol"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e", 
+        "excited_ppl", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "Doug", 
+        "ppl": [
+          "REF", 
+          1
+        ], 
+        "excited_ppl": [
+          "REF", 
+          2
+        ], 
+        "x": "Doug"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "e", 
+        "excited_ppl", 
+        "x", 
+        "ppl_len"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          2
+        ], 
+        "ppl_len": [
+          "REF", 
+          3
+        ], 
+        "e": "Doug", 
+        "x": "Doug", 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "3": [
+          "LIST", 
+          5, 
+          3, 
+          5, 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/list-comp.golden_py3 b/v3/example-code/list-comp.golden_py3
new file mode 100644
index 000000000..5d999ccae
--- /dev/null
+++ b/v3/example-code/list-comp.golden_py3
@@ -0,0 +1,926 @@
+{
+  "code": "ppl = ['Alice', 'Bob', 'Carol', 'Doug']\nexcited_ppl = [e + '!!' for e in ppl]\nppl_len = [len(x) for x in ppl]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": "Alice"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": "Bob"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": "Carol"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "e": "Doug"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              2
+            ], 
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "e": "Doug"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "list_iterator"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "x": "Alice"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "x": "Bob"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "x": "Carol"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "x": "Doug"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              4
+            ], 
+            "x": "Doug", 
+            "__return__": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f2", 
+          "ordered_varnames": [
+            ".0", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "list_iterator"
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          3, 
+          5, 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "ppl", 
+        "excited_ppl", 
+        "ppl_len"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ppl": [
+          "REF", 
+          1
+        ], 
+        "excited_ppl": [
+          "REF", 
+          3
+        ], 
+        "ppl_len": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Alice", 
+          "Bob", 
+          "Carol", 
+          "Doug"
+        ], 
+        "3": [
+          "LIST", 
+          "Alice!!", 
+          "Bob!!", 
+          "Carol!!", 
+          "Doug!!"
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          3, 
+          5, 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/list-comp.txt b/v3/example-code/list-comp.txt
new file mode 100644
index 000000000..b5a158904
--- /dev/null
+++ b/v3/example-code/list-comp.txt
@@ -0,0 +1,3 @@
+ppl = ['Alice', 'Bob', 'Carol', 'Doug']
+excited_ppl = [e + '!!' for e in ppl]
+ppl_len = [len(x) for x in ppl]
diff --git a/v3/example-code/map.golden b/v3/example-code/map.golden
new file mode 100644
index 000000000..5c65be1bb
--- /dev/null
+++ b/v3/example-code/map.golden
@@ -0,0 +1,7043 @@
+{
+  "code": "# Functional programming with map\n# Adapted from MIT 6.01 course notes (Section A.2.3)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\ndef map(func, lst):\n    if lst == []:\n        return []\n    else:\n        return [func(lst[0])] + map(func, lst[1:])\n    \ndef halveElements(lst):\n    return map(lambda x: x / 2.0, lst)\n  \ninput = [2, 4, 6, 8, 10]\noutput = halveElements(input)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "halveElements", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "halveElements", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "2.0"
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "3.0"
+            ], 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "4.0"
+            ], 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              10
+            ], 
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              11
+            ], 
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "11": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              12
+            ], 
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "12": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              13
+            ], 
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              14
+            ], 
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              15
+            ], 
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "15": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "1.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "halveElements", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              15
+            ], 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "15": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "1.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input", 
+        "output"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              15
+            ], 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p_z", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "output": [
+          "REF", 
+          15
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "15": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "1.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/map.golden_py3 b/v3/example-code/map.golden_py3
new file mode 100644
index 000000000..5c65be1bb
--- /dev/null
+++ b/v3/example-code/map.golden_py3
@@ -0,0 +1,7043 @@
+{
+  "code": "# Functional programming with map\n# Adapted from MIT 6.01 course notes (Section A.2.3)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\ndef map(func, lst):\n    if lst == []:\n        return []\n    else:\n        return [func(lst[0])] + map(func, lst[1:])\n    \ndef halveElements(lst):\n    return map(lambda x: x / 2.0, lst)\n  \ninput = [2, 4, 6, 8, 10]\noutput = halveElements(input)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "halveElements", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "halveElements", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "2.0"
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "3.0"
+            ], 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "4.0"
+            ], 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 12>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 12>_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              10
+            ], 
+            "lst": [
+              "REF", 
+              9
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f12", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "9": [
+          "LIST"
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              11
+            ], 
+            "lst": [
+              "REF", 
+              8
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "8": [
+          "LIST", 
+          10
+        ], 
+        "11": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              12
+            ], 
+            "lst": [
+              "REF", 
+              7
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "7": [
+          "LIST", 
+          8, 
+          10
+        ], 
+        "12": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              13
+            ], 
+            "lst": [
+              "REF", 
+              6
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "6": [
+          "LIST", 
+          6, 
+          8, 
+          10
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              14
+            ], 
+            "lst": [
+              "REF", 
+              5
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "5": [
+          "LIST", 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              15
+            ], 
+            "lst": [
+              "REF", 
+              3
+            ], 
+            "func": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "func", 
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 12>", 
+          1
+        ], 
+        "15": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "1.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "halveElements", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              15
+            ], 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "15": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "1.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "halveElements", 
+        "input", 
+        "output"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              15
+            ], 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "halveElements", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "halveElements_f1_p_z", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "halveElements": [
+          "REF", 
+          2
+        ], 
+        "output": [
+          "REF", 
+          15
+        ], 
+        "input": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(func, lst)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "halveElements(lst)", 
+          null
+        ], 
+        "3": [
+          "LIST", 
+          2, 
+          4, 
+          6, 
+          8, 
+          10
+        ], 
+        "15": [
+          "LIST", 
+          [
+            "SPECIAL_FLOAT", 
+            "1.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "2.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "3.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "4.0"
+          ], 
+          [
+            "SPECIAL_FLOAT", 
+            "5.0"
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/map.txt b/v3/example-code/map.txt
similarity index 100%
rename from example-code/map.txt
rename to v3/example-code/map.txt
diff --git a/v3/example-code/memo_fib.golden b/v3/example-code/memo_fib.golden
new file mode 100644
index 000000000..abb03047a
--- /dev/null
+++ b/v3/example-code/memo_fib.golden
@@ -0,0 +1,10715 @@
+{
+  "code": "# use memoization to make the recursive Fibonacci\n# implementation only take O(n) time and space\n\nMemoTable = {}\n\ndef MemoizedFib(n):\n    if n <= 2:\n        return 1\n\n    if n in MemoTable:\n        return MemoTable[n]\n\n    MemoTable[n] = MemoizedFib(n-1) + MemoizedFib(n-2)\n    return MemoTable[n]\n\n\nres = MemoizedFib(10)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 8, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": 8, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 21, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 34, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "__return__": 21, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ], 
+          [
+            10, 
+            55
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 55, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ], 
+          [
+            10, 
+            55
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib", 
+        "res"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "res": 55, 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ], 
+          [
+            10, 
+            55
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/memo_fib.golden_py3 b/v3/example-code/memo_fib.golden_py3
new file mode 100644
index 000000000..abb03047a
--- /dev/null
+++ b/v3/example-code/memo_fib.golden_py3
@@ -0,0 +1,10715 @@
+{
+  "code": "# use memoization to make the recursive Fibonacci\n# implementation only take O(n) time and space\n\nMemoTable = {}\n\ndef MemoizedFib(n):\n    if n <= 2:\n        return 1\n\n    if n in MemoTable:\n        return MemoTable[n]\n\n    MemoTable[n] = MemoizedFib(n-1) + MemoizedFib(n-2)\n    return MemoTable[n]\n\n\nres = MemoizedFib(10)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f9", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f10", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f8", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f11", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f7", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f12", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f6", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f13", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 8, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f5", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f14", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f4", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": 8, 
+            "n": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f15", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 21, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f3", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "n": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f16", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 34, 
+            "n": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f2", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "__return__": 21, 
+            "n": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f17", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ], 
+          [
+            10, 
+            55
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib"
+      ], 
+      "stdout": "", 
+      "func_name": "MemoizedFib", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 55, 
+            "n": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "MemoizedFib", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "MemoizedFib_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ], 
+          [
+            10, 
+            55
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "MemoTable", 
+        "MemoizedFib", 
+        "res"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MemoizedFib": [
+          "REF", 
+          2
+        ], 
+        "res": 55, 
+        "MemoTable": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            3, 
+            2
+          ], 
+          [
+            4, 
+            3
+          ], 
+          [
+            5, 
+            5
+          ], 
+          [
+            6, 
+            8
+          ], 
+          [
+            7, 
+            13
+          ], 
+          [
+            8, 
+            21
+          ], 
+          [
+            9, 
+            34
+          ], 
+          [
+            10, 
+            55
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "MemoizedFib(n)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/memo_fib.txt b/v3/example-code/memo_fib.txt
similarity index 100%
rename from example-code/memo_fib.txt
rename to v3/example-code/memo_fib.txt
diff --git a/v3/example-code/metaclass.golden b/v3/example-code/metaclass.golden
new file mode 100644
index 000000000..2dc46e253
--- /dev/null
+++ b/v3/example-code/metaclass.golden
@@ -0,0 +1,1883 @@
+{
+  "code": "class Metaclass(type):\n    def __new__(mcs, name, bases, dict_):\n        print(\"__NEW__\")\n        cls = super(Metaclass, mcs).__new__(mcs, name, bases, dict_)\n        return cls\n\n    def __init__(cls, name, bases, dict_):\n        print(\"__INIT__\")\n        super(Metaclass, cls).__init__(name, bases, dict_)\n\n    def __call__(cls, *args):\n        print(\"__CALL__\")\n        obj = super(Metaclass, cls).__call__(*args)\n        return obj\n\nclass MyObj(object):\n    __metaclass__ = Metaclass\n\nMyObj()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass"
+      ], 
+      "stdout": "__NEW__\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "dict_": [
+              "REF", 
+              5
+            ], 
+            "bases": [
+              "REF", 
+              6
+            ], 
+            "name": "MyObj", 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "cls", 
+            "name", 
+            "bases", 
+            "dict_"
+          ]
+        }
+      ], 
+      "globals": {
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "object", 
+          [], 
+          [
+            "__class__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__delattr__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "__format__", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "__getattribute__", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "__hash__", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "__reduce__", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "__reduce_ex__", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              17
+            ]
+          ], 
+          [
+            "__setattr__", 
+            [
+              "REF", 
+              18
+            ]
+          ], 
+          [
+            "__sizeof__", 
+            [
+              "REF", 
+              19
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              20
+            ]
+          ], 
+          [
+            "__subclasshook__", 
+            [
+              "REF", 
+              21
+            ]
+          ]
+        ], 
+        "8": [
+          "getset_descriptor", 
+          "<attribute '__class__' of 'object' objects>"
+        ], 
+        "9": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__delattr__' of 'object' objects>"
+        ], 
+        "10": [
+          "method_descriptor", 
+          "<method '__format__' of 'object' objects>"
+        ], 
+        "11": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__getattribute__' of 'object' objects>"
+        ], 
+        "12": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__hash__' of 'object' objects>"
+        ], 
+        "13": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'object' objects>"
+        ], 
+        "14": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "15": [
+          "method_descriptor", 
+          "<method '__reduce__' of 'object' objects>"
+        ], 
+        "16": [
+          "method_descriptor", 
+          "<method '__reduce_ex__' of 'object' objects>"
+        ], 
+        "17": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__repr__' of 'object' objects>"
+        ], 
+        "18": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__setattr__' of 'object' objects>"
+        ], 
+        "19": [
+          "method_descriptor", 
+          "<method '__sizeof__' of 'object' objects>"
+        ], 
+        "20": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__str__' of 'object' objects>"
+        ], 
+        "21": [
+          "classmethod_descriptor", 
+          "<method '__subclasshook__' of 'object' objects>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass"
+      ], 
+      "stdout": "__NEW__\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "dict_": [
+              "REF", 
+              5
+            ], 
+            "bases": [
+              "REF", 
+              6
+            ], 
+            "name": "MyObj", 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "cls", 
+            "name", 
+            "bases", 
+            "dict_"
+          ]
+        }
+      ], 
+      "globals": {
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "object", 
+          [], 
+          [
+            "__class__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__delattr__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "__format__", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "__getattribute__", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "__hash__", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "__reduce__", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "__reduce_ex__", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              17
+            ]
+          ], 
+          [
+            "__setattr__", 
+            [
+              "REF", 
+              18
+            ]
+          ], 
+          [
+            "__sizeof__", 
+            [
+              "REF", 
+              19
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              20
+            ]
+          ], 
+          [
+            "__subclasshook__", 
+            [
+              "REF", 
+              21
+            ]
+          ]
+        ], 
+        "8": [
+          "getset_descriptor", 
+          "<attribute '__class__' of 'object' objects>"
+        ], 
+        "9": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__delattr__' of 'object' objects>"
+        ], 
+        "10": [
+          "method_descriptor", 
+          "<method '__format__' of 'object' objects>"
+        ], 
+        "11": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__getattribute__' of 'object' objects>"
+        ], 
+        "12": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__hash__' of 'object' objects>"
+        ], 
+        "13": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'object' objects>"
+        ], 
+        "14": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "15": [
+          "method_descriptor", 
+          "<method '__reduce__' of 'object' objects>"
+        ], 
+        "16": [
+          "method_descriptor", 
+          "<method '__reduce_ex__' of 'object' objects>"
+        ], 
+        "17": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__repr__' of 'object' objects>"
+        ], 
+        "18": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__setattr__' of 'object' objects>"
+        ], 
+        "19": [
+          "method_descriptor", 
+          "<method '__sizeof__' of 'object' objects>"
+        ], 
+        "20": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__str__' of 'object' objects>"
+        ], 
+        "21": [
+          "classmethod_descriptor", 
+          "<method '__subclasshook__' of 'object' objects>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "dict_": [
+              "REF", 
+              5
+            ], 
+            "bases": [
+              "REF", 
+              6
+            ], 
+            "name": "MyObj", 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "cls", 
+            "name", 
+            "bases", 
+            "dict_"
+          ]
+        }
+      ], 
+      "globals": {
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "object", 
+          [], 
+          [
+            "__class__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__delattr__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "__format__", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "__getattribute__", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "__hash__", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "__reduce__", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "__reduce_ex__", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              17
+            ]
+          ], 
+          [
+            "__setattr__", 
+            [
+              "REF", 
+              18
+            ]
+          ], 
+          [
+            "__sizeof__", 
+            [
+              "REF", 
+              19
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              20
+            ]
+          ], 
+          [
+            "__subclasshook__", 
+            [
+              "REF", 
+              21
+            ]
+          ]
+        ], 
+        "8": [
+          "getset_descriptor", 
+          "<attribute '__class__' of 'object' objects>"
+        ], 
+        "9": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__delattr__' of 'object' objects>"
+        ], 
+        "10": [
+          "method_descriptor", 
+          "<method '__format__' of 'object' objects>"
+        ], 
+        "11": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__getattribute__' of 'object' objects>"
+        ], 
+        "12": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__hash__' of 'object' objects>"
+        ], 
+        "13": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'object' objects>"
+        ], 
+        "14": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "15": [
+          "method_descriptor", 
+          "<method '__reduce__' of 'object' objects>"
+        ], 
+        "16": [
+          "method_descriptor", 
+          "<method '__reduce_ex__' of 'object' objects>"
+        ], 
+        "17": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__repr__' of 'object' objects>"
+        ], 
+        "18": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__setattr__' of 'object' objects>"
+        ], 
+        "19": [
+          "method_descriptor", 
+          "<method '__sizeof__' of 'object' objects>"
+        ], 
+        "20": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__str__' of 'object' objects>"
+        ], 
+        "21": [
+          "classmethod_descriptor", 
+          "<method '__subclasshook__' of 'object' objects>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "dict_": [
+              "REF", 
+              5
+            ], 
+            "bases": [
+              "REF", 
+              6
+            ], 
+            "name": "MyObj", 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "cls", 
+            "name", 
+            "bases", 
+            "dict_", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "CLASS", 
+          "object", 
+          [], 
+          [
+            "__class__", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "__delattr__", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "__format__", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "__getattribute__", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "__hash__", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "__reduce__", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "__reduce_ex__", 
+            [
+              "REF", 
+              16
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              17
+            ]
+          ], 
+          [
+            "__setattr__", 
+            [
+              "REF", 
+              18
+            ]
+          ], 
+          [
+            "__sizeof__", 
+            [
+              "REF", 
+              19
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              20
+            ]
+          ], 
+          [
+            "__subclasshook__", 
+            [
+              "REF", 
+              21
+            ]
+          ]
+        ], 
+        "8": [
+          "getset_descriptor", 
+          "<attribute '__class__' of 'object' objects>"
+        ], 
+        "9": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__delattr__' of 'object' objects>"
+        ], 
+        "10": [
+          "method_descriptor", 
+          "<method '__format__' of 'object' objects>"
+        ], 
+        "11": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__getattribute__' of 'object' objects>"
+        ], 
+        "12": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__hash__' of 'object' objects>"
+        ], 
+        "13": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'object' objects>"
+        ], 
+        "14": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "15": [
+          "method_descriptor", 
+          "<method '__reduce__' of 'object' objects>"
+        ], 
+        "16": [
+          "method_descriptor", 
+          "<method '__reduce_ex__' of 'object' objects>"
+        ], 
+        "17": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__repr__' of 'object' objects>"
+        ], 
+        "18": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__setattr__' of 'object' objects>"
+        ], 
+        "19": [
+          "method_descriptor", 
+          "<method '__sizeof__' of 'object' objects>"
+        ], 
+        "20": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__str__' of 'object' objects>"
+        ], 
+        "21": [
+          "classmethod_descriptor", 
+          "<method '__subclasshook__' of 'object' objects>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n", 
+      "func_name": "__call__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              23
+            ], 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__call__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__call___f2", 
+          "ordered_varnames": [
+            "cls", 
+            "args"
+          ]
+        }
+      ], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "23": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n", 
+      "func_name": "__call__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              23
+            ], 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__call__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__call___f2", 
+          "ordered_varnames": [
+            "cls", 
+            "args"
+          ]
+        }
+      ], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "23": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n__CALL__\n", 
+      "func_name": "__call__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              23
+            ], 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__call__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__call___f2", 
+          "ordered_varnames": [
+            "cls", 
+            "args"
+          ]
+        }
+      ], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "23": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n__CALL__\n", 
+      "func_name": "__call__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              23
+            ], 
+            "obj": [
+              "REF", 
+              24
+            ], 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__call__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__call___f2", 
+          "ordered_varnames": [
+            "cls", 
+            "args", 
+            "obj"
+          ]
+        }
+      ], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "23": [
+          "TUPLE"
+        ], 
+        "24": [
+          "INSTANCE", 
+          "MyObj"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n__CALL__\n", 
+      "func_name": "__call__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "args": [
+              "REF", 
+              23
+            ], 
+            "obj": [
+              "REF", 
+              24
+            ], 
+            "cls": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__call__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__call___f2", 
+          "ordered_varnames": [
+            "cls", 
+            "args", 
+            "obj", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ], 
+        "23": [
+          "TUPLE"
+        ], 
+        "24": [
+          "INSTANCE", 
+          "MyObj"
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "__NEW__\n__INIT__\n__CALL__\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          22
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Metaclass", 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/metaclass.golden_py3 b/v3/example-code/metaclass.golden_py3
new file mode 100644
index 000000000..16f9fa582
--- /dev/null
+++ b/v3/example-code/metaclass.golden_py3
@@ -0,0 +1,229 @@
+{
+  "code": "class Metaclass(type):\n    def __new__(mcs, name, bases, dict_):\n        print(\"__NEW__\")\n        cls = super(Metaclass, mcs).__new__(mcs, name, bases, dict_)\n        return cls\n\n    def __init__(cls, name, bases, dict_):\n        print(\"__INIT__\")\n        super(Metaclass, cls).__init__(name, bases, dict_)\n\n    def __call__(cls, *args):\n        print(\"__CALL__\")\n        obj = super(Metaclass, cls).__call__(*args)\n        return obj\n\nclass MyObj(object):\n    __metaclass__ = Metaclass\n\nMyObj()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          5
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "CLASS", 
+          "MyObj", 
+          [], 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Metaclass", 
+        "MyObj"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "MyObj": [
+          "REF", 
+          5
+        ], 
+        "Metaclass": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Metaclass", 
+          [
+            "type"
+          ], 
+          [
+            "__call__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__call__(cls, *args)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__init__(cls, name, bases, dict_)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "CLASS", 
+          "MyObj", 
+          [], 
+          [
+            "__metaclass__", 
+            [
+              "REF", 
+              1
+            ]
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/metaclass.txt b/v3/example-code/metaclass.txt
new file mode 100644
index 000000000..16f1d75c7
--- /dev/null
+++ b/v3/example-code/metaclass.txt
@@ -0,0 +1,19 @@
+class Metaclass(type):
+    def __new__(mcs, name, bases, dict_):
+        print("__NEW__")
+        cls = super(Metaclass, mcs).__new__(mcs, name, bases, dict_)
+        return cls
+
+    def __init__(cls, name, bases, dict_):
+        print("__INIT__")
+        super(Metaclass, cls).__init__(name, bases, dict_)
+
+    def __call__(cls, *args):
+        print("__CALL__")
+        obj = super(Metaclass, cls).__call__(*args)
+        return obj
+
+class MyObj(object):
+    __metaclass__ = Metaclass
+
+MyObj()
diff --git a/v3/example-code/nonlocal.golden b/v3/example-code/nonlocal.golden
new file mode 100644
index 000000000..7f7631792
--- /dev/null
+++ b/v3/example-code/nonlocal.golden
@@ -0,0 +1,11 @@
+{
+  "code": "# 'nonlocal' keyword is only in Python 3\ndef outer():\n    x = 1\n    def inner():\n        nonlocal x\n        x = 2\n        y = x\n        print(\"inner:\", x, y)\n    inner()\n    print(\"outer:\", x)\n\nouter()\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 5)", 
+      "line": 5, 
+      "event": "uncaught_exception", 
+      "offset": 18
+    }
+  ]
+}
diff --git a/v3/example-code/nonlocal.golden_py3 b/v3/example-code/nonlocal.golden_py3
new file mode 100644
index 000000000..e865e76cc
--- /dev/null
+++ b/v3/example-code/nonlocal.golden_py3
@@ -0,0 +1,667 @@
+{
+  "code": "# 'nonlocal' keyword is only in Python 3\ndef outer():\n    x = 1\n    def inner():\n        nonlocal x\n        x = 2\n        y = x\n        print(\"inner:\", x, y)\n    inner()\n    print(\"outer:\", x)\n\nouter()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "outer", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "outer", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "outer", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "outer", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "inner", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "inner", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "inner_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "inner", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "inner", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "inner_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "inner", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "inner", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "inner_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "", 
+      "func_name": "inner", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "inner", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "inner_f2", 
+          "ordered_varnames": [
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "inner: 2 2\n", 
+      "func_name": "inner", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "inner", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "inner_f2", 
+          "ordered_varnames": [
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "inner: 2 2\n", 
+      "func_name": "outer", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "inner: 2 2\nouter: 2\n", 
+      "func_name": "outer", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 2, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p", 
+          "ordered_varnames": [
+            "inner", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "outer"
+      ], 
+      "stdout": "inner: 2 2\nouter: 2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 2, 
+            "inner": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "outer", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "outer_f1_p_z", 
+          "ordered_varnames": [
+            "inner", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "outer()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "inner()", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/nonlocal.txt b/v3/example-code/nonlocal.txt
new file mode 100644
index 000000000..4bd156762
--- /dev/null
+++ b/v3/example-code/nonlocal.txt
@@ -0,0 +1,12 @@
+# 'nonlocal' keyword is only in Python 3
+def outer():
+    x = 1
+    def inner():
+        nonlocal x
+        x = 2
+        y = x
+        print("inner:", x, y)
+    inner()
+    print("outer:", x)
+
+outer()
diff --git a/v3/example-code/oop_1.golden b/v3/example-code/oop_1.golden
new file mode 100644
index 000000000..ef5496688
--- /dev/null
+++ b/v3/example-code/oop_1.golden
@@ -0,0 +1,1272 @@
+{
+  "code": "# Object-oriented programming intro\n# Adapted from MIT 6.01 course notes (Section 3.5)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\nclass Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\n    def salutation(self):\n        return self.role + ' ' + self.name\n\npat = Staff601()\nprint(pat.course)\n\npat.name = 'Pat'\npat.age = 60\npat.role = 'Professor'\n\nprint(pat.building)\npat.building = 32\nprint(pat.building)\n\nprint(pat.salutation())\nprint(Staff601.salutation(pat))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": "Professor Pat", 
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 25, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "Professor Pat", 
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\nProfessor Pat\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 25, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/oop_1.golden_py3 b/v3/example-code/oop_1.golden_py3
new file mode 100644
index 000000000..ef5496688
--- /dev/null
+++ b/v3/example-code/oop_1.golden_py3
@@ -0,0 +1,1272 @@
+{
+  "code": "# Object-oriented programming intro\n# Adapted from MIT 6.01 course notes (Section 3.5)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\nclass Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\n    def salutation(self):\n        return self.role + ' ' + self.name\n\npat = Staff601()\nprint(pat.course)\n\npat.name = 'Pat'\npat.age = 60\npat.role = 'Professor'\n\nprint(pat.building)\npat.building = 32\nprint(pat.building)\n\nprint(pat.salutation())\nprint(Staff601.salutation(pat))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": "Professor Pat", 
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 25, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "Professor Pat", 
+            "self": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\nProfessor Pat\nProfessor Pat\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 25, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/oop_1.txt b/v3/example-code/oop_1.txt
similarity index 77%
rename from example-code/oop_1.txt
rename to v3/example-code/oop_1.txt
index f072f69f2..d04790552 100644
--- a/example-code/oop_1.txt
+++ b/v3/example-code/oop_1.txt
@@ -11,15 +11,15 @@ class Staff601:
         return self.role + ' ' + self.name
 
 pat = Staff601()
-print pat.course
+print(pat.course)
 
 pat.name = 'Pat'
 pat.age = 60
 pat.role = 'Professor'
 
-print pat.building
+print(pat.building)
 pat.building = 32
-print pat.building
+print(pat.building)
 
-print pat.salutation()
-print Staff601.salutation(pat)
+print(pat.salutation())
+print(Staff601.salutation(pat))
diff --git a/v3/example-code/oop_2.golden b/v3/example-code/oop_2.golden
new file mode 100644
index 000000000..67d2ab57b
--- /dev/null
+++ b/v3/example-code/oop_2.golden
@@ -0,0 +1,1135 @@
+{
+  "code": "# The __init__ 'constructor' - object-oriented programming intro\n# Adapted from MIT 6.01 course notes (Section 3.5)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\nclass Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\n    def __init__(self, name, role, years, salary):\n      self.name = name\n      self.role = role\n      self.age = years\n      self.salary = salary\n\n    def salutation(self):\n        return self.role + ' ' + self.name\n\npat = Staff601('Pat', 'Professor', 60, 100000)\nprint(pat.salutation())\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "years": 60, 
+            "role": "Professor", 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "Professor Pat", 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "Professor Pat\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 20, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/oop_2.golden_py3 b/v3/example-code/oop_2.golden_py3
new file mode 100644
index 000000000..67d2ab57b
--- /dev/null
+++ b/v3/example-code/oop_2.golden_py3
@@ -0,0 +1,1135 @@
+{
+  "code": "# The __init__ 'constructor' - object-oriented programming intro\n# Adapted from MIT 6.01 course notes (Section 3.5)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\nclass Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\n    def __init__(self, name, role, years, salary):\n      self.name = name\n      self.role = role\n      self.age = years\n      self.salary = salary\n\n    def salutation(self):\n        return self.role + ' ' + self.name\n\npat = Staff601('Pat', 'Professor', 60, 100000)\nprint(pat.salutation())\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "role": "Professor", 
+            "name": "Pat", 
+            "years": 60
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "salary": 100000, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "years": 60, 
+            "role": "Professor", 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "role", 
+            "years", 
+            "salary", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "Professor Pat", 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "Professor Pat\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, name, role, years, salary)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ], 
+          [
+            "salary", 
+            100000
+          ]
+        ]
+      }, 
+      "line": 20, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/oop_2.txt b/v3/example-code/oop_2.txt
similarity index 95%
rename from example-code/oop_2.txt
rename to v3/example-code/oop_2.txt
index c4f0a534d..014c82790 100644
--- a/example-code/oop_2.txt
+++ b/v3/example-code/oop_2.txt
@@ -17,5 +17,5 @@ class Staff601:
         return self.role + ' ' + self.name
 
 pat = Staff601('Pat', 'Professor', 60, 100000)
-print pat.salutation()
+print(pat.salutation())
 
diff --git a/v3/example-code/oop_inherit.golden b/v3/example-code/oop_inherit.golden
new file mode 100644
index 000000000..21edf4ec3
--- /dev/null
+++ b/v3/example-code/oop_inherit.golden
@@ -0,0 +1,1152 @@
+{
+  "code": "# Inheritance - object-oriented programming intro\n# Adapted from MIT 6.01 course notes (Section 3.5)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\nclass Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\n    def giveRaise(self, percentage):\n        self.salary = self.salary + self.salary * percentage\n\nclass Prof601(Staff601):\n    salary = 100000\n\n    def __init__(self, name, age):\n        self.name = name\n        self.giveRaise((age - 18) * 0.03)\n\n    def salutation(self):\n        return self.role + ' ' + self.name\n\npat = Prof601('Pat', 60)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601"
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "giveRaise", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "percentage": 1.260, 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "giveRaise", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "giveRaise_f2", 
+          "ordered_varnames": [
+            "self", 
+            "percentage"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "giveRaise", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "percentage": 1.260, 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "giveRaise", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "giveRaise_f2", 
+          "ordered_varnames": [
+            "self", 
+            "percentage"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "giveRaise", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "percentage": 1.260, 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "giveRaise", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "giveRaise_f2", 
+          "ordered_varnames": [
+            "self", 
+            "percentage", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "salary", 
+            [
+              "SPECIAL_FLOAT", 
+              "226000.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "salary", 
+            [
+              "SPECIAL_FLOAT", 
+              "226000.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          6
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "salary", 
+            [
+              "SPECIAL_FLOAT", 
+              "226000.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 23, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/oop_inherit.golden_py3 b/v3/example-code/oop_inherit.golden_py3
new file mode 100644
index 000000000..21edf4ec3
--- /dev/null
+++ b/v3/example-code/oop_inherit.golden_py3
@@ -0,0 +1,1152 @@
+{
+  "code": "# Inheritance - object-oriented programming intro\n# Adapted from MIT 6.01 course notes (Section 3.5)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\nclass Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\n    def giveRaise(self, percentage):\n        self.salary = self.salary + self.salary * percentage\n\nclass Prof601(Staff601):\n    salary = 100000\n\n    def __init__(self, name, age):\n        self.name = name\n        self.giveRaise((age - 18) * 0.03)\n\n    def salutation(self):\n        return self.role + ' ' + self.name\n\npat = Prof601('Pat', 60)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601"
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "giveRaise", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "percentage": 1.260, 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "giveRaise", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "giveRaise_f2", 
+          "ordered_varnames": [
+            "self", 
+            "percentage"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "giveRaise", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "percentage": 1.260, 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "giveRaise", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "giveRaise_f2", 
+          "ordered_varnames": [
+            "self", 
+            "percentage"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "giveRaise", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "percentage": 1.260, 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "giveRaise", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "giveRaise_f2", 
+          "ordered_varnames": [
+            "self", 
+            "percentage", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "salary", 
+            [
+              "SPECIAL_FLOAT", 
+              "226000.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "age": 60, 
+            "name": "Pat", 
+            "self": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "name", 
+            "age", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "salary", 
+            [
+              "SPECIAL_FLOAT", 
+              "226000.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "Prof601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          6
+        ], 
+        "Prof601": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "giveRaise", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "giveRaise(self, percentage)", 
+          null
+        ], 
+        "3": [
+          "CLASS", 
+          "Prof601", 
+          [
+            "Staff601"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "salary", 
+            100000
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__init__(self, name, age)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "6": [
+          "INSTANCE", 
+          "Prof601", 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "salary", 
+            [
+              "SPECIAL_FLOAT", 
+              "226000.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 23, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/oop_inherit.txt b/v3/example-code/oop_inherit.txt
similarity index 100%
rename from example-code/oop_inherit.txt
rename to v3/example-code/oop_inherit.txt
diff --git a/v3/example-code/oop_small.golden b/v3/example-code/oop_small.golden
new file mode 100644
index 000000000..4325327d6
--- /dev/null
+++ b/v3/example-code/oop_small.golden
@@ -0,0 +1,1089 @@
+{
+  "code": "class A:\n    x = 1\n    y = 'hello'\n\nclass B:\n    z = 'bye'\n\nclass C(A,B):\n    def salutation(self):\n        return '%d %s %s' % (self.x, self.y, self.z)\n\ninst = C()\nprint(inst.salutation())\ninst.x = 100\nprint(inst.salutation())\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "B": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": "1 hello bye", 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "100 hello bye", 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n100 hello bye\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/oop_small.golden_py3 b/v3/example-code/oop_small.golden_py3
new file mode 100644
index 000000000..4325327d6
--- /dev/null
+++ b/v3/example-code/oop_small.golden_py3
@@ -0,0 +1,1089 @@
+{
+  "code": "class A:\n    x = 1\n    y = 'hello'\n\nclass B:\n    z = 'bye'\n\nclass C(A,B):\n    def salutation(self):\n        return '%d %s %s' % (self.x, self.y, self.z)\n\ninst = C()\nprint(inst.salutation())\ninst.x = 100\nprint(inst.salutation())\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "B": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": "1 hello bye", 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f1", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n", 
+      "func_name": "salutation", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "100 hello bye", 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "salutation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "salutation_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "B", 
+        "C", 
+        "inst"
+      ], 
+      "stdout": "1 hello bye\n100 hello bye\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "C": [
+          "REF", 
+          3
+        ], 
+        "B": [
+          "REF", 
+          2
+        ], 
+        "inst": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "x", 
+            1
+          ], 
+          [
+            "y", 
+            "hello"
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "z", 
+            "bye"
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [
+            "A", 
+            "B"
+          ], 
+          [
+            "salutation", 
+            [
+              "REF", 
+              4
+            ]
+          ]
+        ], 
+        "4": [
+          "FUNCTION", 
+          "salutation(self)", 
+          null
+        ], 
+        "5": [
+          "INSTANCE", 
+          "C", 
+          [
+            "x", 
+            100
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/oop_small.txt b/v3/example-code/oop_small.txt
similarity index 78%
rename from example-code/oop_small.txt
rename to v3/example-code/oop_small.txt
index e40400587..8a7ca559b 100644
--- a/example-code/oop_small.txt
+++ b/v3/example-code/oop_small.txt
@@ -10,6 +10,6 @@ class C(A,B):
         return '%d %s %s' % (self.x, self.y, self.z)
 
 inst = C()
-print inst.salutation()
+print(inst.salutation())
 inst.x = 100
-print inst.salutation()
+print(inst.salutation())
diff --git a/v3/example-code/py_tutorial.golden b/v3/example-code/py_tutorial.golden
new file mode 100644
index 000000000..b2849cbd9
--- /dev/null
+++ b/v3/example-code/py_tutorial.golden
@@ -0,0 +1,4754 @@
+{
+  "code": "# Philip's 10-minute intro to Python\n\n# numbers!\nage = 26\npi = 3.14159\n\n# strings!\ns = 'Rutherford Birchard Hayes'\ntokens = s.split()\nfirstName = tokens[0]\nmiddleName = tokens[1]\nlastName = tokens[2]\ns2 = firstName + ' ' + middleName + ' ' + lastName\n\n# 'if' statement - indentation matters!\nif (s == s2):\n    print('yes!!!')\nelse:\n    print('nooooooo')\n\n# list (mutable sequence)\nbeatles = ['John', 'Paul', 'George']\nbeatles.append('Ringo')\n\n# 'for' loop - indentation matters!\nfor b in beatles:\n    print('Hello ' + b)\n\n# tuple (immutable sequence)\nages = (18, 21, 28, 21, 22, 18, 19, 34, 9)\n\n# set (no order, no duplicates)\nuniqueAges = set(ages)\nuniqueAges.add(18) # already in set, no effect\nuniqueAges.remove(21)\n\n# no guaranteed order when iterating over a set\nfor thisAge in uniqueAges:\n    print(thisAge)\n\n# testing set membership\nif 18 in uniqueAges:\n    print('There is an 18-year-old present!')\n\n# sorting\nbeatles.sort() # in-place\norderedUniqueAges = sorted(uniqueAges) # new list\n\n# dict - mapping unique keys to values\nnetWorth = {}\nnetWorth['Donald Trump'] = 3000000000\nnetWorth['Bill Gates'] = 58000000000\nnetWorth['Tom Cruise'] = 40000000\nnetWorth['Joe Postdoc'] = 20000\n\n# iterating over key-value pairs:\nfor (person, worth) in netWorth.items():\n    if worth < 1000000:\n        print('haha ' + person + ' is not a millionaire')\n\n# testing dict membership\nif 'Tom Cruise' in netWorth:\n    print('show me the money!')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "age": 26
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "age": 26, 
+        "pi": 3.142
+      }, 
+      "heap": {}, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "age": 26, 
+        "pi": 3.142, 
+        "s": "Rutherford Birchard Hayes"
+      }, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "age": 26, 
+        "pi": 3.142, 
+        "s": "Rutherford Birchard Hayes"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "age": 26, 
+        "pi": 3.142, 
+        "s": "Rutherford Birchard Hayes", 
+        "firstName": "Rutherford"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "John", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "John", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Paul", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Paul", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "George", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "George", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 30, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          21, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 34, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          21, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 35, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 34, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 34, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 9, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 9, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 18, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 18, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 19, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 19, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 22, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 22, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 42, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 46, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 47, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ]
+      }, 
+      "line": 50, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT"
+        ]
+      }, 
+      "line": 51, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ]
+        ]
+      }, 
+      "line": 52, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ]
+        ]
+      }, 
+      "line": 53, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 54, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Donald Trump", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 3000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Donald Trump", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 3000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Bill Gates", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 58000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Bill Gates", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 58000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Joe Postdoc", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 20000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Joe Postdoc", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 20000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 59, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Joe Postdoc", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 20000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 62, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 63, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\nshow me the money!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 63, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/py_tutorial.golden_py3 b/v3/example-code/py_tutorial.golden_py3
new file mode 100644
index 000000000..b2849cbd9
--- /dev/null
+++ b/v3/example-code/py_tutorial.golden_py3
@@ -0,0 +1,4754 @@
+{
+  "code": "# Philip's 10-minute intro to Python\n\n# numbers!\nage = 26\npi = 3.14159\n\n# strings!\ns = 'Rutherford Birchard Hayes'\ntokens = s.split()\nfirstName = tokens[0]\nmiddleName = tokens[1]\nlastName = tokens[2]\ns2 = firstName + ' ' + middleName + ' ' + lastName\n\n# 'if' statement - indentation matters!\nif (s == s2):\n    print('yes!!!')\nelse:\n    print('nooooooo')\n\n# list (mutable sequence)\nbeatles = ['John', 'Paul', 'George']\nbeatles.append('Ringo')\n\n# 'for' loop - indentation matters!\nfor b in beatles:\n    print('Hello ' + b)\n\n# tuple (immutable sequence)\nages = (18, 21, 28, 21, 22, 18, 19, 34, 9)\n\n# set (no order, no duplicates)\nuniqueAges = set(ages)\nuniqueAges.add(18) # already in set, no effect\nuniqueAges.remove(21)\n\n# no guaranteed order when iterating over a set\nfor thisAge in uniqueAges:\n    print(thisAge)\n\n# testing set membership\nif 18 in uniqueAges:\n    print('There is an 18-year-old present!')\n\n# sorting\nbeatles.sort() # in-place\norderedUniqueAges = sorted(uniqueAges) # new list\n\n# dict - mapping unique keys to values\nnetWorth = {}\nnetWorth['Donald Trump'] = 3000000000\nnetWorth['Bill Gates'] = 58000000000\nnetWorth['Tom Cruise'] = 40000000\nnetWorth['Joe Postdoc'] = 20000\n\n# iterating over key-value pairs:\nfor (person, worth) in netWorth.items():\n    if worth < 1000000:\n        print('haha ' + person + ' is not a millionaire')\n\n# testing dict membership\nif 'Tom Cruise' in netWorth:\n    print('show me the money!')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "age": 26
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "age": 26, 
+        "pi": 3.142
+      }, 
+      "heap": {}, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "age": 26, 
+        "pi": 3.142, 
+        "s": "Rutherford Birchard Hayes"
+      }, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "age": 26, 
+        "pi": 3.142, 
+        "s": "Rutherford Birchard Hayes"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "age": 26, 
+        "pi": 3.142, 
+        "s": "Rutherford Birchard Hayes", 
+        "firstName": "Rutherford"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George"
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "John", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "John", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Paul", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Paul", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "George", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "George", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 27, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 26, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ]
+      }, 
+      "line": 30, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ]
+      }, 
+      "line": 33, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          21, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 34, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          21, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 35, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 34, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 34, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 9, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 9, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 18, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 18, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 19, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 19, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 22, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 22, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 39, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 38, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 42, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 43, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "John", 
+          "Paul", 
+          "George", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 46, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ]
+      }, 
+      "line": 47, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ]
+      }, 
+      "line": 50, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT"
+        ]
+      }, 
+      "line": 51, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ]
+        ]
+      }, 
+      "line": 52, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ]
+        ]
+      }, 
+      "line": 53, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 54, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Donald Trump", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 3000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Donald Trump", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 3000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Bill Gates", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 58000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Bill Gates", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 58000000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Joe Postdoc", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 20000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Joe Postdoc", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 20000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 59, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Joe Postdoc", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 20000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 58, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 57, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 62, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "s2": "Rutherford Birchard Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "lastName": "Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 63, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "age", 
+        "pi", 
+        "s", 
+        "tokens", 
+        "firstName", 
+        "middleName", 
+        "lastName", 
+        "s2", 
+        "beatles", 
+        "b", 
+        "ages", 
+        "uniqueAges", 
+        "thisAge", 
+        "orderedUniqueAges", 
+        "netWorth", 
+        "person", 
+        "worth"
+      ], 
+      "stdout": "yes!!!\nHello John\nHello Paul\nHello George\nHello Ringo\n34\n9\n18\n19\n22\n28\nThere is an 18-year-old present!\nhaha Joe Postdoc is not a millionaire\nshow me the money!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "netWorth": [
+          "REF", 
+          6
+        ], 
+        "beatles": [
+          "REF", 
+          2
+        ], 
+        "firstName": "Rutherford", 
+        "uniqueAges": [
+          "REF", 
+          4
+        ], 
+        "middleName": "Birchard", 
+        "lastName": "Hayes", 
+        "age": 26, 
+        "orderedUniqueAges": [
+          "REF", 
+          5
+        ], 
+        "ages": [
+          "REF", 
+          3
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "person": "Tom Cruise", 
+        "s": "Rutherford Birchard Hayes", 
+        "b": "Ringo", 
+        "s2": "Rutherford Birchard Hayes", 
+        "thisAge": 28, 
+        "pi": 3.142, 
+        "worth": 40000000
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "Rutherford", 
+          "Birchard", 
+          "Hayes"
+        ], 
+        "2": [
+          "LIST", 
+          "George", 
+          "John", 
+          "Paul", 
+          "Ringo"
+        ], 
+        "3": [
+          "TUPLE", 
+          18, 
+          21, 
+          28, 
+          21, 
+          22, 
+          18, 
+          19, 
+          34, 
+          9
+        ], 
+        "4": [
+          "SET", 
+          34, 
+          9, 
+          18, 
+          19, 
+          22, 
+          28
+        ], 
+        "5": [
+          "LIST", 
+          9, 
+          18, 
+          19, 
+          22, 
+          28, 
+          34
+        ], 
+        "6": [
+          "DICT", 
+          [
+            "Donald Trump", 
+            3000000000
+          ], 
+          [
+            "Bill Gates", 
+            58000000000
+          ], 
+          [
+            "Joe Postdoc", 
+            20000
+          ], 
+          [
+            "Tom Cruise", 
+            40000000
+          ]
+        ]
+      }, 
+      "line": 63, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/py_tutorial.txt b/v3/example-code/py_tutorial.txt
similarity index 81%
rename from example-code/py_tutorial.txt
rename to v3/example-code/py_tutorial.txt
index 5f1a230d1..e51ab9599 100644
--- a/example-code/py_tutorial.txt
+++ b/v3/example-code/py_tutorial.txt
@@ -14,9 +14,9 @@ s2 = firstName + ' ' + middleName + ' ' + lastName
 
 # 'if' statement - indentation matters!
 if (s == s2):
-    print 'yes!!!'
+    print('yes!!!')
 else:
-    print 'nooooooo'
+    print('nooooooo')
 
 # list (mutable sequence)
 beatles = ['John', 'Paul', 'George']
@@ -24,7 +24,7 @@ beatles.append('Ringo')
 
 # 'for' loop - indentation matters!
 for b in beatles:
-    print 'Hello', b
+    print('Hello ' + b)
 
 # tuple (immutable sequence)
 ages = (18, 21, 28, 21, 22, 18, 19, 34, 9)
@@ -36,11 +36,11 @@ uniqueAges.remove(21)
 
 # no guaranteed order when iterating over a set
 for thisAge in uniqueAges:
-    print thisAge
+    print(thisAge)
 
 # testing set membership
 if 18 in uniqueAges:
-    print 'There is an 18-year-old present!'
+    print('There is an 18-year-old present!')
 
 # sorting
 beatles.sort() # in-place
@@ -54,10 +54,10 @@ netWorth['Tom Cruise'] = 40000000
 netWorth['Joe Postdoc'] = 20000
 
 # iterating over key-value pairs:
-for (person, worth) in netWorth.iteritems():
+for (person, worth) in netWorth.items():
     if worth < 1000000:
-        print 'haha', person, 'is not a millionaire'
+        print('haha ' + person + ' is not a millionaire')
 
 # testing dict membership
 if 'Tom Cruise' in netWorth:
-    print 'show me the money!'
+    print('show me the money!')
diff --git a/v3/example-code/raw_input.golden b/v3/example-code/raw_input.golden
new file mode 100644
index 000000000..613736478
--- /dev/null
+++ b/v3/example-code/raw_input.golden
@@ -0,0 +1,33 @@
+{
+  "code": "prefix = \"Hello \"\n\nn1 = raw_input(\"Enter your name\")\n\nn2 = raw_input(\"Enter another name\")\n\nres = prefix + n1 + \" and \" + n2\nprint(res)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "prefix"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "prefix": "Hello "
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "prompt": "Enter your name", 
+      "event": "raw_input"
+    }
+  ]
+}
diff --git a/v3/example-code/raw_input.golden_py3 b/v3/example-code/raw_input.golden_py3
new file mode 100644
index 000000000..16dd1a0e6
--- /dev/null
+++ b/v3/example-code/raw_input.golden_py3
@@ -0,0 +1,44 @@
+{
+  "code": "prefix = \"Hello \"\n\nn1 = raw_input(\"Enter your name\")\n\nn2 = raw_input(\"Enter another name\")\n\nres = prefix + n1 + \" and \" + n2\nprint(res)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "prefix"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "prefix": "Hello "
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "prefix"
+      ], 
+      "stdout": "", 
+      "exception_msg": "NameError: name 'raw_input' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "prefix": "Hello "
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/example-code/raw_input.txt b/v3/example-code/raw_input.txt
new file mode 100644
index 000000000..f585d9b1c
--- /dev/null
+++ b/v3/example-code/raw_input.txt
@@ -0,0 +1,8 @@
+prefix = "Hello "
+
+n1 = raw_input("Enter your name")
+
+n2 = raw_input("Enter another name")
+
+res = prefix + n1 + " and " + n2
+print(res)
diff --git a/v3/example-code/raw_input_py3.golden b/v3/example-code/raw_input_py3.golden
new file mode 100644
index 000000000..6cf9c2f64
--- /dev/null
+++ b/v3/example-code/raw_input_py3.golden
@@ -0,0 +1,44 @@
+{
+  "code": "# In Python 3, raw_input is called input\nprefix = \"Hello \"\n\nn1 = input(\"Enter your name\")\n\nn2 = input(\"Enter another name\")\n\nres = prefix + n1 + \" and \" + n2\nprint(res)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "prefix"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "prefix": "Hello "
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "prefix"
+      ], 
+      "stdout": "", 
+      "exception_msg": "NameError: name 'input' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "prefix": "Hello "
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/example-code/raw_input_py3.golden_py3 b/v3/example-code/raw_input_py3.golden_py3
new file mode 100644
index 000000000..7d064d6d0
--- /dev/null
+++ b/v3/example-code/raw_input_py3.golden_py3
@@ -0,0 +1,33 @@
+{
+  "code": "# In Python 3, raw_input is called input\nprefix = \"Hello \"\n\nn1 = input(\"Enter your name\")\n\nn2 = input(\"Enter another name\")\n\nres = prefix + n1 + \" and \" + n2\nprint(res)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "prefix"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "prefix": "Hello "
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "prompt": "Enter your name", 
+      "event": "raw_input"
+    }
+  ]
+}
diff --git a/v3/example-code/raw_input_py3.txt b/v3/example-code/raw_input_py3.txt
new file mode 100644
index 000000000..d71c4992f
--- /dev/null
+++ b/v3/example-code/raw_input_py3.txt
@@ -0,0 +1,9 @@
+# In Python 3, raw_input is called input
+prefix = "Hello "
+
+n1 = input("Enter your name")
+
+n2 = input("Enter another name")
+
+res = prefix + n1 + " and " + n2
+print(res)
diff --git a/v3/example-code/sqrt.golden b/v3/example-code/sqrt.golden
new file mode 100644
index 000000000..67a8e85cf
--- /dev/null
+++ b/v3/example-code/sqrt.golden
@@ -0,0 +1,9331 @@
+{
+  "code": "# Calculating square roots by Newton's method, inspired by SICP\n#   http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-10.html#%_sec_1.1.7\n\ndef sqrt(x):\n    def average(a, b):\n        return (a + b) / 2.0\n\n    def is_good_enough(guess):\n        return (abs((guess * guess) - x) < 0.001)\n\n    def improve(guess):\n        return average(guess, x / guess)\n\n    def sqrt_iter(guess):\n        if is_good_enough(guess):\n            return guess\n        else:\n            return sqrt_iter(improve(guess))\n\n    return sqrt_iter(1.0)\n\n\nans = sqrt(9)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "is_good_enough"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f3", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f3", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f3", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "b": [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f5", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "b": [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f5", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "b": [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f5", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f7", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f7", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f7", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "b": 1.800
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f9", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "b": 1.800
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f9", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "__return__": 3.400, 
+            "b": 1.800
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f9", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 3.400, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f11", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f11", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f11", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "a": 3.400, 
+            "b": 2.647
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f13", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "a": 3.400, 
+            "b": 2.647
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f13", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "a": 3.400, 
+            "__return__": 3.023, 
+            "b": 2.647
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f13", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 3.023, 
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f15", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f15", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f15", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "a": 3.023, 
+            "b": 2.977
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f17", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "a": 3.023, 
+            "b": 2.977
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f17", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "a": 3.023, 
+            "__return__": 3.000, 
+            "b": 2.977
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f17", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f19", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f19", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "__return__": true, 
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f19", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "__return__": 3.000, 
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 20, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt", 
+        "ans"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "__return__": 3.000, 
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ], 
+        "ans": 3.000
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 23, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/sqrt.golden_py3 b/v3/example-code/sqrt.golden_py3
new file mode 100644
index 000000000..67a8e85cf
--- /dev/null
+++ b/v3/example-code/sqrt.golden_py3
@@ -0,0 +1,9331 @@
+{
+  "code": "# Calculating square roots by Newton's method, inspired by SICP\n#   http://mitpress.mit.edu/sicp/full-text/book/book-Z-H-10.html#%_sec_1.1.7\n\ndef sqrt(x):\n    def average(a, b):\n        return (a + b) / 2.0\n\n    def is_good_enough(guess):\n        return (abs((guess * guess) - x) < 0.001)\n\n    def improve(guess):\n        return average(guess, x / guess)\n\n    def sqrt_iter(guess):\n        if is_good_enough(guess):\n            return guess\n        else:\n            return sqrt_iter(improve(guess))\n\n    return sqrt_iter(1.0)\n\n\nans = sqrt(9)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "is_good_enough"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f3", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f3", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f3", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "b": [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f5", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "b": [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f5", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ], 
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "b": [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f5", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f4", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f7", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f7", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f7", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "b": 1.800
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f9", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "b": 1.800
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f9", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "a": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "__return__": 3.400, 
+            "b": 1.800
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f9", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 3.400, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f8", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f11", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f11", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f11", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "a": 3.400, 
+            "b": 2.647
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f13", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "a": 3.400, 
+            "b": 2.647
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f13", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "a": 3.400, 
+            "__return__": 3.023, 
+            "b": 2.647
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f13", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 3.023, 
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f12", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f15", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f15", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": false, 
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f15", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "a": 3.023, 
+            "b": 2.977
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f17", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "a": 3.023, 
+            "b": 2.977
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f17", 
+          "ordered_varnames": [
+            "a", 
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "average", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "a": 3.023, 
+            "__return__": 3.000, 
+            "b": 2.977
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "average", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "average_f17", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "improve", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "improve", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "improve_f16", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f19", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f19", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "is_good_enough", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "__return__": true, 
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "is_good_enough", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "is_good_enough_f19", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "guess": 3.023
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.000
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f18", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "guess": 3.400
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.023
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f14", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": 3.400
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f10", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f6", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt_iter", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 9, 
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3.000, 
+            "guess": [
+              "SPECIAL_FLOAT", 
+              "1.0"
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sqrt_iter", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "sqrt_iter_f2", 
+          "ordered_varnames": [
+            "guess", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt"
+      ], 
+      "stdout": "", 
+      "func_name": "sqrt", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "__return__": 3.000, 
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 20, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sqrt", 
+        "ans"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "sqrt_iter": [
+              "REF", 
+              5
+            ], 
+            "is_good_enough": [
+              "REF", 
+              3
+            ], 
+            "__return__": 3.000, 
+            "x": 9, 
+            "average": [
+              "REF", 
+              2
+            ], 
+            "improve": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sqrt", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sqrt_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "average", 
+            "improve", 
+            "is_good_enough", 
+            "sqrt_iter", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "sqrt": [
+          "REF", 
+          1
+        ], 
+        "ans": 3.000
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sqrt(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "average(a, b)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "is_good_enough(guess)", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "improve(guess)", 
+          1
+        ], 
+        "5": [
+          "FUNCTION", 
+          "sqrt_iter(guess)", 
+          1
+        ]
+      }, 
+      "line": 23, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/sqrt.txt b/v3/example-code/sqrt.txt
similarity index 100%
rename from example-code/sqrt.txt
rename to v3/example-code/sqrt.txt
diff --git a/v3/example-code/strtok.golden b/v3/example-code/strtok.golden
new file mode 100644
index 000000000..3c5031e8f
--- /dev/null
+++ b/v3/example-code/strtok.golden
@@ -0,0 +1,258 @@
+{
+  "code": "input = 'John,Doe,1984,4,1,male'\n\ntokens = input.split(',')\nfirstName = tokens[0]\nlastName = tokens[1]\nbirthdate = (int(tokens[2]), int(tokens[3]), int(tokens[4]))\nisMale = (tokens[5] == 'male')\n\nprint('Hi ' + firstName + ' ' + lastName)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male", 
+        "firstName": "John"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "lastName": "Doe", 
+        "firstName": "John", 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName", 
+        "birthdate"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "lastName": "Doe", 
+        "firstName": "John", 
+        "birthdate": [
+          "REF", 
+          2
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ], 
+        "2": [
+          "TUPLE", 
+          1984, 
+          4, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName", 
+        "birthdate", 
+        "isMale"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "isMale": true, 
+        "firstName": "John", 
+        "lastName": "Doe", 
+        "birthdate": [
+          "REF", 
+          2
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ], 
+        "2": [
+          "TUPLE", 
+          1984, 
+          4, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName", 
+        "birthdate", 
+        "isMale"
+      ], 
+      "stdout": "Hi John Doe\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "isMale": true, 
+        "firstName": "John", 
+        "lastName": "Doe", 
+        "birthdate": [
+          "REF", 
+          2
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ], 
+        "2": [
+          "TUPLE", 
+          1984, 
+          4, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/strtok.golden_py3 b/v3/example-code/strtok.golden_py3
new file mode 100644
index 000000000..3c5031e8f
--- /dev/null
+++ b/v3/example-code/strtok.golden_py3
@@ -0,0 +1,258 @@
+{
+  "code": "input = 'John,Doe,1984,4,1,male'\n\ntokens = input.split(',')\nfirstName = tokens[0]\nlastName = tokens[1]\nbirthdate = (int(tokens[2]), int(tokens[3]), int(tokens[4]))\nisMale = (tokens[5] == 'male')\n\nprint('Hi ' + firstName + ' ' + lastName)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male", 
+        "firstName": "John"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "lastName": "Doe", 
+        "firstName": "John", 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName", 
+        "birthdate"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "lastName": "Doe", 
+        "firstName": "John", 
+        "birthdate": [
+          "REF", 
+          2
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ], 
+        "2": [
+          "TUPLE", 
+          1984, 
+          4, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName", 
+        "birthdate", 
+        "isMale"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "isMale": true, 
+        "firstName": "John", 
+        "lastName": "Doe", 
+        "birthdate": [
+          "REF", 
+          2
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ], 
+        "2": [
+          "TUPLE", 
+          1984, 
+          4, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "input", 
+        "tokens", 
+        "firstName", 
+        "lastName", 
+        "birthdate", 
+        "isMale"
+      ], 
+      "stdout": "Hi John Doe\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "isMale": true, 
+        "firstName": "John", 
+        "lastName": "Doe", 
+        "birthdate": [
+          "REF", 
+          2
+        ], 
+        "tokens": [
+          "REF", 
+          1
+        ], 
+        "input": "John,Doe,1984,4,1,male"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "John", 
+          "Doe", 
+          "1984", 
+          "4", 
+          "1", 
+          "male"
+        ], 
+        "2": [
+          "TUPLE", 
+          1984, 
+          4, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/strtok.txt b/v3/example-code/strtok.txt
similarity index 82%
rename from example-code/strtok.txt
rename to v3/example-code/strtok.txt
index 96e8100d5..52e08f112 100644
--- a/example-code/strtok.txt
+++ b/v3/example-code/strtok.txt
@@ -6,4 +6,4 @@ lastName = tokens[1]
 birthdate = (int(tokens[2]), int(tokens[3]), int(tokens[4]))
 isMale = (tokens[5] == 'male')
 
-print 'Hi', firstName, lastName
+print('Hi ' + firstName + ' ' + lastName)
diff --git a/v3/example-code/sum-cubes.golden b/v3/example-code/sum-cubes.golden
new file mode 100644
index 000000000..6eecbbe30
--- /dev/null
+++ b/v3/example-code/sum-cubes.golden
@@ -0,0 +1,1693 @@
+{
+  "code": "def summation(n, term, next):\n  total, k = 0, 1\n  while k <= n:\n    total, k = total + term(k), next(k)\n    return total\n\ndef cube(k):\n  return pow(k, 3)\n\ndef successor(k):\n  return k + 1\n\ndef sum_cubes(n):\n  return summation(n, cube, successor)\n\nsum_cubes(3)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "sum_cubes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "sum_cubes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "term": [
+              "REF", 
+              2
+            ], 
+            "n": 3, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "term": [
+              "REF", 
+              2
+            ], 
+            "n": 3, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "cube", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "cube", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "cube_f3", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "cube", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "cube", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "cube_f3", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "cube", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "cube", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "cube_f3", 
+          "ordered_varnames": [
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "successor", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "successor", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "successor_f4", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "successor", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "successor", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "successor_f4", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "successor", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "successor", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "successor_f4", 
+          "ordered_varnames": [
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 1, 
+            "k": 2, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "term": [
+              "REF", 
+              2
+            ], 
+            "k": 2, 
+            "n": 3, 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "__return__": 1, 
+            "total": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "sum_cubes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/sum-cubes.golden_py3 b/v3/example-code/sum-cubes.golden_py3
new file mode 100644
index 000000000..6eecbbe30
--- /dev/null
+++ b/v3/example-code/sum-cubes.golden_py3
@@ -0,0 +1,1693 @@
+{
+  "code": "def summation(n, term, next):\n  total, k = 0, 1\n  while k <= n:\n    total, k = total + term(k), next(k)\n    return total\n\ndef cube(k):\n  return pow(k, 3)\n\ndef successor(k):\n  return k + 1\n\ndef sum_cubes(n):\n  return summation(n, cube, successor)\n\nsum_cubes(3)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "sum_cubes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "sum_cubes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "term": [
+              "REF", 
+              2
+            ], 
+            "n": 3, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "term": [
+              "REF", 
+              2
+            ], 
+            "n": 3, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "cube", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "cube", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "cube_f3", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "cube", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "cube", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "cube_f3", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "cube", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "cube", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "cube_f3", 
+          "ordered_varnames": [
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "successor", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "successor", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "successor_f4", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "successor", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "successor", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "successor_f4", 
+          "ordered_varnames": [
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "successor", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 0, 
+            "k": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "successor", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "successor_f4", 
+          "ordered_varnames": [
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3, 
+            "term": [
+              "REF", 
+              2
+            ], 
+            "total": 1, 
+            "k": 2, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "term": [
+              "REF", 
+              2
+            ], 
+            "k": 2, 
+            "n": 3, 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "__return__": 1, 
+            "total": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "n", 
+            "term", 
+            "next", 
+            "total", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "sum_cubes", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sum_cubes", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sum_cubes_f1", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "cube", 
+        "successor", 
+        "sum_cubes"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "cube": [
+          "REF", 
+          2
+        ], 
+        "sum_cubes": [
+          "REF", 
+          4
+        ], 
+        "successor": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(n, term, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "cube(k)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "successor(k)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "sum_cubes(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/sum-cubes.txt b/v3/example-code/sum-cubes.txt
new file mode 100644
index 000000000..7eff416f7
--- /dev/null
+++ b/v3/example-code/sum-cubes.txt
@@ -0,0 +1,16 @@
+def summation(n, term, next):
+  total, k = 0, 1
+  while k <= n:
+    total, k = total + term(k), next(k)
+    return total
+
+def cube(k):
+  return pow(k, 3)
+
+def successor(k):
+  return k + 1
+
+def sum_cubes(n):
+  return summation(n, cube, successor)
+
+sum_cubes(3)
diff --git a/v3/example-code/sum-list.golden b/v3/example-code/sum-list.golden
new file mode 100644
index 000000000..c121417d9
--- /dev/null
+++ b/v3/example-code/sum-list.golden
@@ -0,0 +1,3466 @@
+{
+  "code": "myList = (1, (2, (3, (4, (5, None)))))\n\ndef sumList(node, subtotal):\n  if not node:\n    return subtotal\n  else:\n    return sumList(node[1], subtotal + node[0])\n\ntotal = sumList(myList, 0)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "__return__": 15, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "__return__": 15, 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "__return__": 15, 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "__return__": 15, 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "__return__": 15, 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "__return__": 15, 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList", 
+        "total"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "total": 15, 
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/sum-list.golden_py3 b/v3/example-code/sum-list.golden_py3
new file mode 100644
index 000000000..c121417d9
--- /dev/null
+++ b/v3/example-code/sum-list.golden_py3
@@ -0,0 +1,3466 @@
+{
+  "code": "myList = (1, (2, (3, (4, (5, None)))))\n\ndef sumList(node, subtotal):\n  if not node:\n    return subtotal\n  else:\n    return sumList(node[1], subtotal + node[0])\n\ntotal = sumList(myList, 0)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "subtotal": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "node": null, 
+            "__return__": 15, 
+            "subtotal": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f6", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "subtotal": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              5
+            ], 
+            "__return__": 15, 
+            "subtotal": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f5", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "subtotal": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              4
+            ], 
+            "__return__": 15, 
+            "subtotal": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f4", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "subtotal": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              3
+            ], 
+            "__return__": 15, 
+            "subtotal": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "subtotal": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              2
+            ], 
+            "__return__": 15, 
+            "subtotal": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "node": [
+              "REF", 
+              1
+            ], 
+            "__return__": 15, 
+            "subtotal": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "node", 
+            "subtotal", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "myList", 
+        "sumList", 
+        "total"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "total": 15, 
+        "myList": [
+          "REF", 
+          1
+        ], 
+        "sumList": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          4, 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "TUPLE", 
+          5, 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "sumList(node, subtotal)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/sum-list.txt b/v3/example-code/sum-list.txt
new file mode 100644
index 000000000..9945a6a6b
--- /dev/null
+++ b/v3/example-code/sum-list.txt
@@ -0,0 +1,9 @@
+myList = (1, (2, (3, (4, (5, None)))))
+
+def sumList(node, subtotal):
+  if not node:
+    return subtotal
+  else:
+    return sumList(node[1], subtotal + node[0])
+
+total = sumList(myList, 0)
diff --git a/v3/example-code/sum.golden b/v3/example-code/sum.golden
new file mode 100644
index 000000000..5995d2750
--- /dev/null
+++ b/v3/example-code/sum.golden
@@ -0,0 +1,10163 @@
+{
+  "code": "# Higher-order functions\n# Adapted from MIT 6.01 course notes (Section A.2.2)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\ndef summation(low, high, f, next):\n    s = 0\n    x = low\n    while x <= high:\n        s = s + f(x)\n        x = next(x)\n    return s\n\ndef sumsquares(low, high):\n    return summation(low, high, lambda x: x**2, lambda x: x+1)\n\nprint(sumsquares(1, 10))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 10, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 10, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 10, 
+            "s": 0, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f8", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 16, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f10", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 25, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f12", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": 36, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f13", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 7, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f14", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": 49, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f15", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 8, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f16", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "__return__": 64, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f17", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f18", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "__return__": 81, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f19", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "__return__": 10, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f20", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "__return__": 100, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f21", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "__return__": 11, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f22", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "__return__": 385, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "__return__": 385, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "385\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "__return__": 385, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p_z", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/sum.golden_py3 b/v3/example-code/sum.golden_py3
new file mode 100644
index 000000000..5995d2750
--- /dev/null
+++ b/v3/example-code/sum.golden_py3
@@ -0,0 +1,10163 @@
+{
+  "code": "# Higher-order functions\n# Adapted from MIT 6.01 course notes (Section A.2.2)\n# http://mit.edu/6.01/mercurial/spring10/www/handouts/readings.pdf\n\ndef summation(low, high, f, next):\n    s = 0\n    x = low\n    while x <= high:\n        s = s + f(x)\n        x = next(x)\n    return s\n\ndef sumsquares(low, high):\n    return summation(low, high, lambda x: x**2, lambda x: x+1)\n\nprint(sumsquares(1, 10))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 10, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 10, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 10, 
+            "s": 0, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f8", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 16, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f10", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 25, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f12", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": 36, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f13", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 7, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f14", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 91, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": 49, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f15", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 7
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 8, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f16", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 140, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "__return__": 64, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f17", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 8
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 8
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f18", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 204, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "__return__": 81, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f19", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 9
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "__return__": 10, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f20", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 285, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "__return__": 100, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f21", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "__return__": 11, 
+            "x": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 14>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 14>_f22", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 10, 
+            "s": 385, 
+            "low": 1, 
+            "__return__": 385, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 14>", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "__return__": 385, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "385\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 10, 
+            "__return__": 385, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p_z", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/sum.txt b/v3/example-code/sum.txt
similarity index 93%
rename from example-code/sum.txt
rename to v3/example-code/sum.txt
index 99a8ace18..3fe651044 100644
--- a/example-code/sum.txt
+++ b/v3/example-code/sum.txt
@@ -13,4 +13,4 @@ def summation(low, high, f, next):
 def sumsquares(low, high):
     return summation(low, high, lambda x: x**2, lambda x: x+1)
 
-print sumsquares(1, 10)
+print(sumsquares(1, 10))
diff --git a/v3/example-code/towers_of_hanoi.golden b/v3/example-code/towers_of_hanoi.golden
new file mode 100644
index 000000000..0b98e6d8c
--- /dev/null
+++ b/v3/example-code/towers_of_hanoi.golden
@@ -0,0 +1,10996 @@
+{
+  "code": "# move a stack of n disks from stack a to stack b,\n# using tmp as a temporary stack\ndef TowerOfHanoi(n, a, b, tmp):\n    if n == 1:\n        b.append(a.pop())\n    else:\n        TowerOfHanoi(n-1, a, tmp, b)\n        b.append(a.pop())\n        TowerOfHanoi(n-1, tmp, b, a)\n        \nstack1 = [4,3,2,1]\nstack2 = []\nstack3 = []\n      \n# transfer stack1 to stack3 using Tower of Hanoi rules\nTowerOfHanoi(len(stack1), stack1, stack3, stack2)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/towers_of_hanoi.golden_py3 b/v3/example-code/towers_of_hanoi.golden_py3
new file mode 100644
index 000000000..0b98e6d8c
--- /dev/null
+++ b/v3/example-code/towers_of_hanoi.golden_py3
@@ -0,0 +1,10996 @@
+{
+  "code": "# move a stack of n disks from stack a to stack b,\n# using tmp as a temporary stack\ndef TowerOfHanoi(n, a, b, tmp):\n    if n == 1:\n        b.append(a.pop())\n    else:\n        TowerOfHanoi(n-1, a, tmp, b)\n        b.append(a.pop())\n        TowerOfHanoi(n-1, tmp, b, a)\n        \nstack1 = [4,3,2,1]\nstack2 = []\nstack3 = []\n      \n# transfer stack1 to stack3 using Tower of Hanoi rules\nTowerOfHanoi(len(stack1), stack1, stack3, stack2)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f4", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f5", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f3", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          3
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f7", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f8", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f6", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f2", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          4
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2, 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f11", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          3, 
+          2
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f12", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f10", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST", 
+          3
+        ], 
+        "4": [
+          "LIST", 
+          4
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2, 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              4
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              3
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f14", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          2
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST", 
+          1
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f15", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f13", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              2
+            ], 
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f9", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "TowerOfHanoi", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "tmp": [
+              "REF", 
+              3
+            ], 
+            "a": [
+              "REF", 
+              2
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              4
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "TowerOfHanoi", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "TowerOfHanoi_f1", 
+          "ordered_varnames": [
+            "n", 
+            "a", 
+            "b", 
+            "tmp", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "TowerOfHanoi", 
+        "stack1", 
+        "stack2", 
+        "stack3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "stack3": [
+          "REF", 
+          4
+        ], 
+        "stack2": [
+          "REF", 
+          3
+        ], 
+        "TowerOfHanoi": [
+          "REF", 
+          1
+        ], 
+        "stack1": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "TowerOfHanoi(n, a, b, tmp)", 
+          null
+        ], 
+        "2": [
+          "LIST"
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/towers_of_hanoi.txt b/v3/example-code/towers_of_hanoi.txt
similarity index 100%
rename from example-code/towers_of_hanoi.txt
rename to v3/example-code/towers_of_hanoi.txt
diff --git a/v3/example-code/varargs.golden b/v3/example-code/varargs.golden
new file mode 100644
index 000000000..d12be8967
--- /dev/null
+++ b/v3/example-code/varargs.golden
@@ -0,0 +1,1015 @@
+{
+  "code": "# Demonstrate *args and **kwargs\ndef f1(a, b, *rest):\n    pass\n\nf1(1, 2)\nf1(1, 2, 3, 4, 5, 6, 7)\n\ndef f2(a, b, **kwrest):\n    pass\n\nf2(1, 2, name='Bob', age=38)\n\ndef f3(a, b, *rest, **kwrest):\n    pass\n\nf3(1, 2, 3, 4, name='Bob', age=38)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "2": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "2": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "2": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "f2", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "kwrest": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f2", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f2_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "f2", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "kwrest": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f2", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f2_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "f2", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "kwrest": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f2", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f2_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "kwrest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "f3", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              8
+            ], 
+            "kwrest": [
+              "REF", 
+              7
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f3", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f3_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ], 
+        "7": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "f3", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              8
+            ], 
+            "kwrest": [
+              "REF", 
+              7
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f3", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f3_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ], 
+        "7": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "f3", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              8
+            ], 
+            "kwrest": [
+              "REF", 
+              7
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f3", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f3_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "kwrest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ], 
+        "7": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/varargs.golden_py3 b/v3/example-code/varargs.golden_py3
new file mode 100644
index 000000000..d12be8967
--- /dev/null
+++ b/v3/example-code/varargs.golden_py3
@@ -0,0 +1,1015 @@
+{
+  "code": "# Demonstrate *args and **kwargs\ndef f1(a, b, *rest):\n    pass\n\nf1(1, 2)\nf1(1, 2, 3, 4, 5, 6, 7)\n\ndef f2(a, b, **kwrest):\n    pass\n\nf2(1, 2, name='Bob', age=38)\n\ndef f3(a, b, *rest, **kwrest):\n    pass\n\nf3(1, 2, 3, 4, name='Bob', age=38)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "2": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "2": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "2": [
+          "TUPLE"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "f1", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f1_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "f2", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "kwrest": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f2", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f2_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "f2", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "kwrest": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f2", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f2_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "f2", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "kwrest": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f2", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f2_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "kwrest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "f3", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              8
+            ], 
+            "kwrest": [
+              "REF", 
+              7
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f3", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f3_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ], 
+        "7": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "f3", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 1, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              8
+            ], 
+            "kwrest": [
+              "REF", 
+              7
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f3", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f3_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "kwrest"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ], 
+        "7": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "f3", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 1, 
+            "__return__": null, 
+            "b": 2, 
+            "rest": [
+              "REF", 
+              8
+            ], 
+            "kwrest": [
+              "REF", 
+              7
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f3", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f3_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "rest", 
+            "kwrest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "TUPLE", 
+          3, 
+          4
+        ], 
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ], 
+        "7": [
+          "DICT", 
+          [
+            "age", 
+            38
+          ], 
+          [
+            "name", 
+            "Bob"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f1", 
+        "f2", 
+        "f3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f1": [
+          "REF", 
+          1
+        ], 
+        "f2": [
+          "REF", 
+          4
+        ], 
+        "f3": [
+          "REF", 
+          6
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f1(a, b, *rest)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "f2(a, b, **kwrest)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "f3(a, b, *rest, **kwrest)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/varargs.txt b/v3/example-code/varargs.txt
new file mode 100644
index 000000000..97da39bb9
--- /dev/null
+++ b/v3/example-code/varargs.txt
@@ -0,0 +1,16 @@
+# Demonstrate *args and **kwargs
+def f1(a, b, *rest):
+    pass
+
+f1(1, 2)
+f1(1, 2, 3, 4, 5, 6, 7)
+
+def f2(a, b, **kwrest):
+    pass
+
+f2(1, 2, name='Bob', age=38)
+
+def f3(a, b, *rest, **kwrest):
+    pass
+
+f3(1, 2, 3, 4, name='Bob', age=38)
diff --git a/v3/example-code/wentworth_gcd.golden b/v3/example-code/wentworth_gcd.golden
new file mode 100644
index 000000000..cc0273cb0
--- /dev/null
+++ b/v3/example-code/wentworth_gcd.golden
@@ -0,0 +1,3798 @@
+{
+  "code": "# Tutorial code from Prof. Peter Wentworth\n# Rhodes University, South Africa (http://www.ru.ac.za/)\n\ndef gcd(x, y, depth=1):\n    '''\n    Find the greatest common divisor of x, y\n    Pre:  x >= y,  y >= 0, both x and y are int\n    '''\n    result = x       # set provisional return value\n    if y != 0:\n        indent = \"**\" * depth\n        print((\"%s About to recursively call gcd(%d, %d)\" % (indent, y, x%y)))\n        result = gcd(y, x % y, depth+1)\n        print((\"%s result is %d\" % (indent, result)))\n    return result\n\ndef main():\n    m = 77\n    n = 28\n    print((\"Finding gcd(%d, %d)\" % (m,n)))\n    g = gcd(m, n)\n    print(('Greatest common divisor of %d, %d = %d'\n          % (m, n, g)))\n\nmain()\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4, 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4, 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4, 
+            "result": 7, 
+            "__return__": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "indent": "******", 
+            "__return__": 7, 
+            "depth": 3, 
+            "result": 7, 
+            "y": 7, 
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "indent": "****", 
+            "__return__": 7, 
+            "depth": 2, 
+            "result": 7, 
+            "y": 21, 
+            "x": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "indent": "**", 
+            "__return__": 7, 
+            "depth": 1, 
+            "result": 7, 
+            "y": 28, 
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "g": 7, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "g": 7, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\nGreatest common divisor of 77, 28 = 7\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "m": 77, 
+            "g": 7, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\nGreatest common divisor of 77, 28 = 7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/wentworth_gcd.golden_py3 b/v3/example-code/wentworth_gcd.golden_py3
new file mode 100644
index 000000000..cc0273cb0
--- /dev/null
+++ b/v3/example-code/wentworth_gcd.golden_py3
@@ -0,0 +1,3798 @@
+{
+  "code": "# Tutorial code from Prof. Peter Wentworth\n# Rhodes University, South Africa (http://www.ru.ac.za/)\n\ndef gcd(x, y, depth=1):\n    '''\n    Find the greatest common divisor of x, y\n    Pre:  x >= y,  y >= 0, both x and y are int\n    '''\n    result = x       # set provisional return value\n    if y != 0:\n        indent = \"**\" * depth\n        print((\"%s About to recursively call gcd(%d, %d)\" % (indent, y, x%y)))\n        result = gcd(y, x % y, depth+1)\n        print((\"%s result is %d\" % (indent, result)))\n    return result\n\ndef main():\n    m = 77\n    n = 28\n    print((\"Finding gcd(%d, %d)\" % (m,n)))\n    g = gcd(m, n)\n    print(('Greatest common divisor of %d, %d = %d'\n          % (m, n, g)))\n\nmain()\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4, 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4, 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 21
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 7, 
+            "depth": 4, 
+            "result": 7, 
+            "__return__": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f5", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "y": 7, 
+            "x": 21, 
+            "depth": 3, 
+            "indent": "******", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "indent": "******", 
+            "__return__": 7, 
+            "depth": 3, 
+            "result": 7, 
+            "y": 7, 
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f4", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": 21, 
+            "x": 28, 
+            "depth": 2, 
+            "indent": "****", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 77
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "indent": "****", 
+            "__return__": 7, 
+            "depth": 2, 
+            "result": 7, 
+            "y": 21, 
+            "x": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f3", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 28, 
+            "x": 77, 
+            "depth": 1, 
+            "indent": "**", 
+            "result": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "gcd", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "n": 28
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "indent": "**", 
+            "__return__": 7, 
+            "depth": 1, 
+            "result": 7, 
+            "y": 28, 
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gcd", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gcd_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "depth", 
+            "result", 
+            "indent", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "g": 7, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "m": 77, 
+            "g": 7, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\nGreatest common divisor of 77, 28 = 7\n", 
+      "func_name": "main", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "m": 77, 
+            "g": 7, 
+            "n": 28
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "main", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "main_f1", 
+          "ordered_varnames": [
+            "m", 
+            "n", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gcd", 
+        "main"
+      ], 
+      "stdout": "Finding gcd(77, 28)\n** About to recursively call gcd(28, 21)\n**** About to recursively call gcd(21, 7)\n****** About to recursively call gcd(7, 0)\n****** result is 7\n**** result is 7\n** result is 7\nGreatest common divisor of 77, 28 = 7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "main": [
+          "REF", 
+          2
+        ], 
+        "gcd": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gcd(x, y, depth)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "main()", 
+          null
+        ]
+      }, 
+      "line": 25, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/wentworth_gcd.txt b/v3/example-code/wentworth_gcd.txt
similarity index 64%
rename from example-code/wentworth_gcd.txt
rename to v3/example-code/wentworth_gcd.txt
index b9d544fbd..683beffc2 100644
--- a/example-code/wentworth_gcd.txt
+++ b/v3/example-code/wentworth_gcd.txt
@@ -9,18 +9,18 @@ def gcd(x, y, depth=1):
     result = x       # set provisional return value
     if y != 0:
         indent = "**" * depth
-        print("%s About to recursively call gcd(%d, %d)" % (indent, y, x%y))
+        print(("%s About to recursively call gcd(%d, %d)" % (indent, y, x%y)))
         result = gcd(y, x % y, depth+1)
-        print("%s result is %d" % (indent, result))
+        print(("%s result is %d" % (indent, result)))
     return result
 
 def main():
     m = 77
     n = 28
-    print("Finding gcd(%d, %d)" % (m,n))
+    print(("Finding gcd(%d, %d)" % (m,n)))
     g = gcd(m, n)
-    print('Greatest common divisor of %d, %d = %d'
-          % (m, n, g))
+    print(('Greatest common divisor of %d, %d = %d'
+          % (m, n, g)))
 
 main()
 
diff --git a/v3/example-code/wentworth_sumList.golden b/v3/example-code/wentworth_sumList.golden
new file mode 100644
index 000000000..8809705d3
--- /dev/null
+++ b/v3/example-code/wentworth_sumList.golden
@@ -0,0 +1,4520 @@
+{
+  "code": "# Tutorial code from Prof. Peter Wentworth\n# Rhodes University, South Africa (http://www.ru.ac.za/)\n\ndef sumList(xs):\n    '''\n    Sum a list that can contain nested lists.\n    Precondition: All leaf elements are numbers.\n    '''\n    sum = 0\n    for e in xs:\n        if type(e) is list:\n            print((\"Calling sumList(%s) recursively\" % e))\n            v = sumList(e)\n            print((\"sumList(%s) returned %s\" % (e, v)))\n            sum += v\n        else:\n            sum += e\n    return sum\n\n\ntestData = [10, [20, 30, [40], 50], 60]\nprint((\"Calling sumList(%s)\" % testData))\nresult = sumList(testData)\nprint((\"Final sum of all numbers in initial list is %s\" % result))\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 0, 
+            "e": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 0, 
+            "e": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 0, 
+            "e": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 0, 
+            "e": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 20, 
+            "e": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 20, 
+            "e": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 20, 
+            "e": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 0, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 0, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 40, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 40, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 40, 
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 40, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ], 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ], 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 90, 
+            "e": [
+              "REF", 
+              4
+            ], 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 90, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 90, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 140, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 140, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 140, 
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 140, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ], 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ], 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 150, 
+            "e": [
+              "REF", 
+              3
+            ], 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 150, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 150, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 210, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 210, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 210, 
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 210, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData", 
+        "result"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "result": 210, 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData", 
+        "result"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\nFinal sum of all numbers in initial list is 210\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "result": 210, 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 24, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/example-code/wentworth_sumList.golden_py3 b/v3/example-code/wentworth_sumList.golden_py3
new file mode 100644
index 000000000..8809705d3
--- /dev/null
+++ b/v3/example-code/wentworth_sumList.golden_py3
@@ -0,0 +1,4520 @@
+{
+  "code": "# Tutorial code from Prof. Peter Wentworth\n# Rhodes University, South Africa (http://www.ru.ac.za/)\n\ndef sumList(xs):\n    '''\n    Sum a list that can contain nested lists.\n    Precondition: All leaf elements are numbers.\n    '''\n    sum = 0\n    for e in xs:\n        if type(e) is list:\n            print((\"Calling sumList(%s) recursively\" % e))\n            v = sumList(e)\n            print((\"sumList(%s) returned %s\" % (e, v)))\n            sum += v\n        else:\n            sum += e\n    return sum\n\n\ntestData = [10, [20, 30, [40], 50], 60]\nprint((\"Calling sumList(%s)\" % testData))\nresult = sumList(testData)\nprint((\"Final sum of all numbers in initial list is %s\" % result))\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 22, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 0, 
+            "e": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 0, 
+            "e": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 0, 
+            "e": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 0, 
+            "e": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 20, 
+            "e": 20
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 20, 
+            "e": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 20, 
+            "e": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": 30
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 0, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 0, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 40, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 40, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 40, 
+            "xs": [
+              "REF", 
+              4
+            ], 
+            "sum": 40, 
+            "e": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f3", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ], 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 50, 
+            "e": [
+              "REF", 
+              4
+            ], 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 90, 
+            "e": [
+              "REF", 
+              4
+            ], 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 90, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 90, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 140, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 140, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 140, 
+            "xs": [
+              "REF", 
+              3
+            ], 
+            "sum": 140, 
+            "e": 50, 
+            "v": 40
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f2", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ], 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 10, 
+            "e": [
+              "REF", 
+              3
+            ], 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 150, 
+            "e": [
+              "REF", 
+              3
+            ], 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 150, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 150, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 210, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 210, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "sumList", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 210, 
+            "xs": [
+              "REF", 
+              2
+            ], 
+            "sum": 210, 
+            "e": 60, 
+            "v": 140
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumList", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumList_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "sum", 
+            "e", 
+            "v", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 18, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData", 
+        "result"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "result": 210, 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "sumList", 
+        "testData", 
+        "result"
+      ], 
+      "stdout": "Calling sumList([10, [20, 30, [40], 50], 60])\nCalling sumList([20, 30, [40], 50]) recursively\nCalling sumList([40]) recursively\nsumList([40]) returned 40\nsumList([20, 30, [40], 50]) returned 140\nFinal sum of all numbers in initial list is 210\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "testData": [
+          "REF", 
+          2
+        ], 
+        "result": 210, 
+        "sumList": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "sumList(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          [
+            "REF", 
+            3
+          ], 
+          60
+        ], 
+        "3": [
+          "LIST", 
+          20, 
+          30, 
+          [
+            "REF", 
+            4
+          ], 
+          50
+        ], 
+        "4": [
+          "LIST", 
+          40
+        ]
+      }, 
+      "line": 24, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/example-code/wentworth_sumList.txt b/v3/example-code/wentworth_sumList.txt
similarity index 66%
rename from example-code/wentworth_sumList.txt
rename to v3/example-code/wentworth_sumList.txt
index e286c2d69..30727f674 100644
--- a/example-code/wentworth_sumList.txt
+++ b/v3/example-code/wentworth_sumList.txt
@@ -9,9 +9,9 @@ def sumList(xs):
     sum = 0
     for e in xs:
         if type(e) is list:
-            print("Calling sumList(%s) recursively" % e)
+            print(("Calling sumList(%s) recursively" % e))
             v = sumList(e)
-            print("sumList(%s) returned %s" % (e, v))
+            print(("sumList(%s) returned %s" % (e, v)))
             sum += v
         else:
             sum += e
@@ -19,7 +19,7 @@ def sumList(xs):
 
 
 testData = [10, [20, 30, [40], 50], 60]
-print("Calling sumList(%s)" % testData)
+print(("Calling sumList(%s)" % testData))
 result = sumList(testData)
-print("Final sum of all numbers in initial list is %s" % result)
+print(("Final sum of all numbers in initial list is %s" % result))
 
diff --git a/v3/example-code/wentworth_try_finally.golden b/v3/example-code/wentworth_try_finally.golden
new file mode 100644
index 000000000..f305d1d32
--- /dev/null
+++ b/v3/example-code/wentworth_try_finally.golden
@@ -0,0 +1,2823 @@
+{
+  "code": "# Tutorial code from Prof. Peter Wentworth\n# Rhodes University, South Africa (http://www.ru.ac.za/)\n\n# Demonstrate recursion that throws an exception\n# at its base case, and the tracing of try ... finally.\n#\n# How many \"survived!\" messages will be printed???\n\ndef f(n):\n    try:\n        x = 10 / n\n        print(\"x is \" + str(x))\n        f(n-1)\n        print(\"survived!\")\n    finally:\n        print(\"Bye from f where n = \" + str(n))\n\nf(4)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": null, 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 10, 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 5, 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 3, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\nBye from f where n = 4\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 2, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2\nx is 3\nx is 5\nx is 10\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\nBye from f where n = 4\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/example-code/wentworth_try_finally.golden_py3 b/v3/example-code/wentworth_try_finally.golden_py3
new file mode 100644
index 000000000..5b02e3eb7
--- /dev/null
+++ b/v3/example-code/wentworth_try_finally.golden_py3
@@ -0,0 +1,2913 @@
+{
+  "code": "# Tutorial code from Prof. Peter Wentworth\n# Rhodes University, South Africa (http://www.ru.ac.za/)\n\n# Demonstrate recursion that throws an exception\n# at its base case, and the tracing of try ... finally.\n#\n# How many \"survived!\" messages will be printed???\n\ndef f(n):\n    try:\n        x = 10 / n\n        print(\"x is \" + str(x))\n        f(n-1)\n        print(\"survived!\")\n    finally:\n        print(\"Bye from f where n = \" + str(n))\n\nf(4)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": null, 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f5", 
+          "ordered_varnames": [
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": [
+              "SPECIAL_FLOAT", 
+              "10.0"
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": [
+              "SPECIAL_FLOAT", 
+              "5.0"
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 3.333, 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\nBye from f where n = 4\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "x": 2.500, 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "n", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "x is 2.5\nx is 3.3333333333333335\nx is 5.0\nx is 10.0\nBye from f where n = 0\nBye from f where n = 1\nBye from f where n = 2\nBye from f where n = 3\nBye from f where n = 4\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(n)", 
+          null
+        ]
+      }, 
+      "line": 18, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/example-code/wentworth_try_finally.txt b/v3/example-code/wentworth_try_finally.txt
similarity index 75%
rename from example-code/wentworth_try_finally.txt
rename to v3/example-code/wentworth_try_finally.txt
index daab5e33c..b6617fa56 100644
--- a/example-code/wentworth_try_finally.txt
+++ b/v3/example-code/wentworth_try_finally.txt
@@ -9,10 +9,10 @@
 def f(n):
     try:
         x = 10 / n
-        print "x is", x
+        print("x is " + str(x))
         f(n-1)
-        print "survived!"
+        print("survived!")
     finally:
-        print "Bye from f where n =", n
+        print("Bye from f where n = " + str(n))
 
 f(4)
diff --git a/v3/example.py b/v3/example.py
new file mode 100644
index 000000000..70433b650
--- /dev/null
+++ b/v3/example.py
@@ -0,0 +1,3 @@
+x = 5
+y = 10
+z = x + y
diff --git a/v3/favicon.ico b/v3/favicon.ico
new file mode 100644
index 000000000..c9efc5844
Binary files /dev/null and b/v3/favicon.ico differ
diff --git a/v3/frontend-tests.html b/v3/frontend-tests.html
new file mode 100644
index 000000000..a5a9d5a24
--- /dev/null
+++ b/v3/frontend-tests.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <title>Online Python Tutor - test all frontends</title>
+</head>
+
+<body>
+
+<!-- use '//' to let the browser choose http or https as appropriate -->
+
+<p>iframe-embed.html:</p>
+
+<iframe width="1200" height="500" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=%23+Example+to+torture+students%0A%23+from+UC+Berkeley+CS61a%0A%23+(only+works+in+Python+3)%0A%0Adef+f(t)%3A%0A++++def+g(t)%3A%0A++++++++def+h()%3A%0A++++++++++++nonlocal+t%0A++++++++++++t+%2B%3D+1%0A++++++++return+h,+lambda%3A+t%0A++++h,+gt+%3D+g(0)%0A++++return+h,+gt,+lambda%3A+t%0A%0Ah,+gt,+ft+%3D+f(0)%0Aft(),+gt()%0Ah()%0Aft(),+gt()&cumulative=true&py=3&curInstr=11"> </iframe>
+
+<p/>
+
+<p>visualize.html:</p>
+
+<iframe width="1200" height="800" frameborder="0"
+src="//www.pythontutor.com/visualize.html#code=%23+Example+to+torture+students%0A%23+from+UC+Berkeley+CS61a%0A%23+(only+works+in+Python+3%29%0A%0Adef+f(t%29%3A%0A++++def+g(t%29%3A%0A++++++++def+h(%29%3A%0A++++++++++++nonlocal+t%0A++++++++++++t+%2B%3D+1%0A++++++++return+h,+lambda%3A+t%0A++++h,+gt+%3D+g(0%29%0A++++return+h,+gt,+lambda%3A+t%0A%0Ah,+gt,+ft+%3D+f(0%29%0Aft(%29,+gt(%29%0Ah(%29%0Aft(%29,+gt(%29&mode=display&origin=opt-frontend.js&cumulative=true&heapPrimitives=false&textReferences=false&py=3&rawInputLstJSON=%5B%5D&curInstr=11"> </iframe>
+
+<p>composingprograms.html:</p>
+
+<iframe width="1200" height="600" frameborder="0" src="//www.pythontutor.com/composingprograms.html#code=%23+Example+to+torture+students%0A%23+from+UC+Berkeley+CS61a%0A%23+(only+works+in+Python+3%29%0A%0Adef+f(t%29%3A%0A++++def+g(t%29%3A%0A++++++++def+h(%29%3A%0A++++++++++++nonlocal+t%0A++++++++++++t+%2B%3D+1%0A++++++++return+h,+lambda%3A+t%0A++++h,+gt+%3D+g(0%29%0A++++return+h,+gt,+lambda%3A+t%0A%0Ah,+gt,+ft+%3D+f(0%29%0Aft(%29,+gt(%29%0Ah(%29%0Aft(%29,+gt(%29&mode=display&origin=opt-frontend.js&cumulative=true&heapPrimitives=false&textReferences=false&py=3&rawInputLstJSON=%5B%5D&curInstr=11"> </iframe>
+
+<p>csc108h.html:</p>
+
+<iframe width="1200" height="600" frameborder="0" src="//www.pythontutor.com/csc108h.html#code=%23+Example+to+torture+students%0A%23+from+UC+Berkeley+CS61a%0A%23+(only+works+in+Python+3%29%0A%0Adef+f(t%29%3A%0A++++def+g(t%29%3A%0A++++++++def+h(%29%3A%0A++++++++++++nonlocal+t%0A++++++++++++t+%2B%3D+1%0A++++++++return+h,+lambda%3A+t%0A++++h,+gt+%3D+g(0%29%0A++++return+h,+gt,+lambda%3A+t%0A%0Ah,+gt,+ft+%3D+f(0%29%0Aft(%29,+gt(%29%0Ah(%29%0Aft(%29,+gt(%29&mode=display&origin=opt-frontend.js&cumulative=true&heapPrimitives=false&textReferences=false&py=3&rawInputLstJSON=%5B%5D&curInstr=11"> </iframe>
+
+<p>csc108h_shared.html:</p>
+
+<iframe width="1200" height="600" frameborder="0" src="//www.pythontutor.com/csc108h_shared.html#code=%23+Example+to+torture+students%0A%23+from+UC+Berkeley+CS61a%0A%23+(only+works+in+Python+3%29%0A%0Adef+f(t%29%3A%0A++++def+g(t%29%3A%0A++++++++def+h(%29%3A%0A++++++++++++nonlocal+t%0A++++++++++++t+%2B%3D+1%0A++++++++return+h,+lambda%3A+t%0A++++h,+gt+%3D+g(0%29%0A++++return+h,+gt,+lambda%3A+t%0A%0Ah,+gt,+ft+%3D+f(0%29%0Aft(%29,+gt(%29%0Ah(%29%0Aft(%29,+gt(%29&mode=display&origin=opt-frontend.js&cumulative=true&heapPrimitives=false&textReferences=false&py=3&rawInputLstJSON=%5B%5D&curInstr=11"> </iframe>
+
+<p>Office Mix</p>
+
+<iframe width="1200" height="600" frameborder="0" src="https://mix.office.com/watch/1le6npbjxtkil"> </iframe>
+
+</body>
+</html>
diff --git a/v3/generate_json_trace.py b/v3/generate_json_trace.py
new file mode 100644
index 000000000..5e1dbc4a7
--- /dev/null
+++ b/v3/generate_json_trace.py
@@ -0,0 +1,57 @@
+# Generates a JSON trace that is compatible with the js/pytutor.js frontend
+
+import sys, pg_logger, json
+from optparse import OptionParser
+
+# To make regression tests work consistently across platforms,
+# standardize display of floats to 3 significant figures
+#
+# Trick from:
+# http://stackoverflow.com/questions/1447287/format-floats-with-standard-json-module
+json.encoder.FLOAT_REPR = lambda f: ('%.3f' % f)
+
+def json_finalizer(input_code, output_trace):
+  ret = dict(code=input_code, trace=output_trace)
+  # sort_keys=True leads to printing in DETERMINISTIC order, but might
+  # screw up some old tests ... however, there is STILL non-determinism
+  # in Python 3.3 tests, ugh!
+  json_output = json.dumps(ret, indent=INDENT_LEVEL)
+  return json_output
+
+def js_var_finalizer(input_code, output_trace):
+  global JS_VARNAME
+  ret = dict(code=input_code, trace=output_trace)
+  json_output = json.dumps(ret, indent=None)
+  return "var %s = %s;" % (JS_VARNAME, json_output)
+
+parser = OptionParser(usage="Generate JSON trace for pytutor")
+parser.add_option('-c', '--cumulative', default=False, action='store_true',
+        help='output cumulative trace.')
+parser.add_option('-p', '--heapPrimitives', default=False, action='store_true',
+        help='render primitives as heap objects.')
+parser.add_option('-o', '--compact', default=False, action='store_true',
+        help='output compact trace.')
+parser.add_option('-i', '--input', default=False, action='store',
+        help='JSON list of strings for simulated raw_input.', dest='raw_input_lst_json')
+parser.add_option("--create_jsvar", dest="js_varname", default=None,
+                  help="Create a JavaScript variable out of the trace")
+parser.add_option("--code", dest="usercode", default=None,
+                  help="Load user code from a string instead of a file and output compact JSON")
+
+(options, args) = parser.parse_args()
+INDENT_LEVEL = None if options.compact else 2
+
+if options.usercode:
+  INDENT_LEVEL = None
+  print(pg_logger.exec_script_str_local(options.usercode,
+                                        options.raw_input_lst_json,
+                                        options.cumulative,
+                                        options.heapPrimitives,
+                                        json_finalizer))
+else:
+  fin = sys.stdin if args[0] == "-" else open(args[0])
+  if options.js_varname:
+    JS_VARNAME = options.js_varname
+    print(pg_logger.exec_script_str_local(fin.read(), options.raw_input_lst_json, options.cumulative, options.heapPrimitives, js_var_finalizer))
+  else:
+    print(pg_logger.exec_script_str_local(fin.read(), options.raw_input_lst_json, options.cumulative, options.heapPrimitives, json_finalizer))
diff --git a/v3/htmlFrame.py b/v3/htmlFrame.py
new file mode 100644
index 000000000..ec57cfd22
--- /dev/null
+++ b/v3/htmlFrame.py
@@ -0,0 +1,34 @@
+#  h t m l F r a m e . p y
+#
+#  Chris Meyers. 09/25/2013
+#
+# Holder for attributes to be applied to a template and
+# a simple function to apply attributes to template and
+# send it to the <div> for display
+
+from pg_logger import setHTML
+
+dft_template = """
+<html><body>
+<h3>%(banner)s</h3>
+<div>%(item1)s</div>
+<div>%(item2)s</div>
+<div>%(item3)s</div>
+</html></body>
+"""
+
+class HtmlFrame :
+    def __init__ (self, template=dft_template, banner="") :
+        self.outputOn = True
+        self.template = template
+        self.banner   = banner
+        self.item1 = self.item2 = self.item3 = ""
+
+    def makeEofPage(self) :
+        pass
+            
+    def makeFrame (self,template=None) :
+        if not template : template = self.template
+        content = template % self.__dict__
+        setHTML(content)
+
diff --git a/v3/html_module.py b/v3/html_module.py
new file mode 100644
index 000000000..b9fd08df8
--- /dev/null
+++ b/v3/html_module.py
@@ -0,0 +1,2 @@
+def display_img(src):
+  setHTML('<img src="%s"/>' % str(src))
diff --git a/v3/htmlexample_module.py b/v3/htmlexample_module.py
new file mode 100644
index 000000000..f72cf6979
--- /dev/null
+++ b/v3/htmlexample_module.py
@@ -0,0 +1,71 @@
+# Example module for Online Python Tutor
+# Philip Guo
+# 2013-08-03
+
+# To get the Online Python Tutor backend to import this custom module,
+# add its filename ('htmlexample_module') to the CUSTOM_MODULE_IMPORTS
+# tuple in pg_logger.py
+
+# To see an example of this module at work, write the following code in
+# http://pythontutor.com/visualize.html
+'''
+from htmlexample_module import ColorTable
+
+t = ColorTable(3, 4)
+
+t.set_color(0, 0, 'red')
+t.render_HTML()
+
+t.set_color(1, 1, 'green')
+t.render_HTML()
+
+t.set_color(2, 2, 'blue')
+t.render_HTML()
+
+for i in range(3):
+    for j in range(4):
+        t.set_color(i, j, 'gray')
+        t.render_HTML()
+'''
+
+
+# defines a simple table where you can set colors for individual rows and columns
+class ColorTable:
+    def __init__(self, num_rows, num_columns):
+        self.num_rows = num_rows
+        self.num_columns = num_columns
+
+        # create a 2D matrix of empty strings
+        self.table = []
+        for i in range(self.num_rows):
+            new_lst = ['' for e in range(self.num_columns)]
+            self.table.append(new_lst)
+
+
+    # color must be a legal HTML color string
+    def set_color(self, row, column, color):
+        assert 0 <= row < self.num_rows
+        assert 0 <= column < self.num_columns
+        self.table[row][column] = color
+
+
+    # call this function whenever you want to render this table in HTML
+    def render_HTML(self):
+        # incrementally build up an HTML table string
+        html_string = '<table>'
+
+        for i in range(self.num_rows):
+            html_string += '<tr>'
+            for j in range(self.num_columns):
+                color = self.table[i][j]
+                if not color:
+                    color = "white"
+                html_string += '''<td style="width: 30px; height: 30px; border: 1px solid black;
+                                  background-color: %s;"></td>''' % color
+            html_string += '</tr>'
+
+        html_string += '</table>'
+
+        # then call the magic setHTML function
+        setHTML(html_string)
+
diff --git a/v3/iframe-embed-demo.html b/v3/iframe-embed-demo.html
new file mode 100644
index 000000000..c04fc636c
--- /dev/null
+++ b/v3/iframe-embed-demo.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <title>Online Python Tutor - iframe embed demo</title>
+</head>
+
+<body>
+
+<!-- use '//' to let the browser choose http or https as appropriate -->
+
+<iframe width="800" height="500" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=%23+From+%22Teaching+with+Python%22+by+John+Zelle%0Adef+happy()%3A%0A++++print(%22Happy+Birthday+to+you!%22)%0A%0Adef+sing(P)%3A%0A++++happy()%0A++++happy()%0A++++print(%22Happy+Birthday+dear+%22+%2B+P+%2B+%22!%22)%0A++++happy()%0A%0A%23+main%0Asing(%22Fred%22)&py=2"> </iframe>
+
+<p/>
+
+<iframe width="800" height="700" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=%23+use+lists%0Ax+%3D+None%0Afor+i+in+range(6,+0,+-1)%3A%0A++x+%3D+%5Bi,+x%5D%0A%0A%23+use+tuples%0Ay+%3D+None%0Afor+i+in+range(6,+0,+-1)%3A%0A++y+%3D+(i,+y)%0A%0Ax%5B1%5D%5B0%5D%3Dy%5B1%5D%5B1%5D+%23+courtesy+of+John+DeNero!&cumulative=false&py=2&curInstr=29&verticalStack=true"> </iframe>
+
+<p/>
+
+<iframe width="900" height="500" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=%23+Example+to+torture+students%0A%23+from+UC+Berkeley+CS61a%0A%23+(only+works+in+Python+3)%0A%0Adef+f(t)%3A%0A++++def+g(t)%3A%0A++++++++def+h()%3A%0A++++++++++++nonlocal+t%0A++++++++++++t+%2B%3D+1%0A++++++++return+h,+lambda%3A+t%0A++++h,+gt+%3D+g(0)%0A++++return+h,+gt,+lambda%3A+t%0A%0Ah,+gt,+ft+%3D+f(0)%0Aft(),+gt()%0Ah()%0Aft(),+gt()&cumulative=true&py=3&curInstr=11"> </iframe>
+
+<p/>
+
+<iframe width="800" height="500" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=public+class+Variables+%7B%0A+++public+static+void+main(String%5B%5D+args)+%7B%0A++++++String+me+%3D+%22me%22%3B%0A++++++String+you+%3D+%22you%22%3B%0A++++++String+tmp+%3D+me%3B%0A++++++me+%3D+you%3B%0A++++++you+%3D+tmp%3B%0A%0A++++++int+x+%3D+5%3B%0A++++++int+y+%3D+10%3B%0A++++++int+t+%3D+x%3B%0A++++++x+%3D+y%3B%0A++++++y+%3D+t%3B%0A+++%7D%0A%7D&origin=opt-frontend.js&cumulative=false&heapPrimitives=false&textReferences=false&py=java&rawInputLstJSON=%5B%5D&curInstr=7&codeDivWidth=350&codeDivHeight=400"> </iframe>
+
+<p/>
+
+<iframe width="800" height="500" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=function+Vector(x,+y)+%7B%0A++this.x+%3D+x%3B%0A++this.y+%3D+y%3B%0A%7D%0A%0AVector.prototype.plus+%3D+function(other)+%7B%0A++return+new+Vector(this.x+%2B+other.x,+this.y+%2B+other.y)%3B%0A%7D%3B%0A%0Avar+v1+%3D+new+Vector(1,+2)%3B%0Avar+v2+%3D+Vector(20,+30)%3B+//+whoops,+forgot+'new'&origin=opt-frontend.js&cumulative=false&heapPrimitives=false&textReferences=false&py=js&rawInputLstJSON=%5B%5D&curInstr=9&codeDivWidth=350&codeDivHeight=400"> </iframe>
+
+<p/>
+
+<iframe width="800" height="500" frameborder="0" src="//pythontutor.com/iframe-embed.html#code=require+'set'%0A%0Amy_array+%3D+%5B1,+2,+3,+'hello',+false,+true,+nil%5D%0Amy_hash+%3D+%7B'John'+%3D%3E+26,+'Jane'+%3D%3E+21,+'Jack'+%3D%3E+30%7D%0Amy_set+%3D+my_array.to_set%0A%0Amy_hash%5B'nested+array'%5D+%3D+my_array%0Amy_array%5B1%5D+%3D+%5B'a',+'b',+'c'%5D&origin=opt-frontend.js&cumulative=true&heapPrimitives=true&textReferences=true&py=ruby&rawInputLstJSON=%5B%5D&curInstr=3&codeDivWidth=350&codeDivHeight=400"> </iframe>
+
+</body>
+</html>
diff --git a/v3/iframe-embed.html b/v3/iframe-embed.html
new file mode 100644
index 000000000..8973205cb
--- /dev/null
+++ b/v3/iframe-embed.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <title>Online Python Tutor - iframe embed page</title>
+
+<!-- dependencies for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors 
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+
+<!-- Python Tutor frontend code and styles -->
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/iframe-embed.js"></script>
+
+</head>
+
+<body>
+
+  <div id="vizDiv"></div>
+
+</body>
+</html>
diff --git a/v3/index.html b/v3/index.html
new file mode 100644
index 000000000..f9c49459d
--- /dev/null
+++ b/v3/index.html
@@ -0,0 +1,279 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+
+<title>Python Tutor - Visualize Python, Java, JavaScript, TypeScript, Ruby, C, and C++ code execution</title>
+
+<meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/jquery.corner.js"></script>
+<script type="text/javascript" src="js/index.js"></script>
+<link rel="stylesheet" href="css/index.css"/>
+
+</head>
+
+<body>
+
+
+<div class="mainBodyPane">
+
+<table class='layoutTbl'>
+  <tr>
+    <td>
+
+<div class="activityPane" id="learnPane">
+
+<h1><span id="learnHeading">VISUALIZE</span> <span class="smallH1">
+<a href="visualize.html#py=2">Python</a>,
+<a href="java.html">Java</a>,
+<a href="javascript.html">JavaScript</a>,
+<a href="typescript.html">TypeScript</a>,
+<a href="ruby.html">Ruby</a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html">C</a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++</a>
+programs
+
+</span></h1>
+
+<p><a id="optLink" href="visualize.html">Python Tutor</a>, created
+by <a
+href="http://www.pgbovine.net/">Philip Guo</a>,
+helps people overcome a fundamental
+barrier to learning programming: understanding what happens as the
+computer executes each line of a program's source code.</p>
+
+
+<p>Using this
+tool, you can write <b><a href="visualize.html#py=2">Python</a></b>,
+<a href="java.html"><b>Java</b></a>,
+<a href="javascript.html"><b>JavaScript</b></a>,
+<a href="typescript.html"><b>TypeScript</b></a>,
+<a href="ruby.html"><b>Ruby</b></a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html"><b>C</b></a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html"><b>C++</b></a>
+programs in your Web
+browser and visualize what the computer is doing step-by-step as it executes those programs.
+
+So far, over <b>1.5 million people in over 180 countries</b> have used
+Python Tutor to visualize over 15 million pieces of code, often as a
+supplement to textbooks, lecture notes, and online programming
+tutorials.</p>
+
+<div id="startLink">
+  <a href="visualize.html">Start writing and visualizing code now!</a>
+</div>
+
+
+<p>For example, here is a visualization showing a Python program that <a
+href="http://en.wikipedia.org/wiki/Recursion_(computer_science)">recursively</a>
+finds the sum of a linked list:</p>
+
+<div id="demoViz"></div>
+
+<!--
+<p>
+
+Watch a <a href="http://www.youtube.com/watch?v=y3sVN7uaxDM">1-minute
+video demo</a> of visualizing execution in the <a
+href="http://ipython.org/">IPython</a> shell in <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/opt-ipy.py">interactive
+mode</a>
+
+</p>
+-->
+
+<p>
+<b><a
+href="http://pgbovine.net/publications/Online-Python-Tutor-web-based-program-visualization_SIGCSE-2013.pdf">Read</a></b>
+the research paper &ndash; Philip J. Guo. Online Python Tutor: Embeddable
+Web-Based Program Visualization for CS Education. In <i>Proceedings
+of the ACM Technical Symposium on Computer Science Education
+(SIGCSE)</i>, March 2013. [<a
+href="http://pgbovine.net/publications/Online-Python-Tutor-web-based-program-visualization_SIGCSE-2013.txt">BibTeX</a>]
+</p>
+
+
+</div>
+
+    </td>
+  </tr>
+</table>
+
+<table class='layoutTbl'>
+  <tr>
+    <td id="embedPaneTd">
+
+<div class="activityPane" id="embedPane">
+
+<h1><span id="embedHeading">SHARE</span> <span class="smallH1">live visualization sessions</span></h1>
+
+<p>Click the &ldquo;Start shared session&rdquo; button to allow an instructor or friend
+    to join your session. You can chat about your code and navigate
+    the visualization together to get live, real-time tutoring. Watch this one-minute
+    <a href="http://youtu.be/Z2TIjNArOK4">video demo</a>:
+</p>
+
+<iframe width="480" height="360" src="http://www.youtube.com/embed/Z2TIjNArOK4" frameborder="0" allowfullscreen></iframe>
+
+<p>Also, you can click the &ldquo;Generate
+permanent link&rdquo; button (at the bottom of <a href="visualize.html">this
+page</a>) and paste that link in an email, social networking
+post, or forum question. When recipients click on your link, they will
+see the exact visualization you've created.</p>
+
+<p>For example, clicking <a
+href="visualize.html#code=%23+find+primes+using+a+for-else+construct%0Afor+n+in+range(2,+10)%3A%0A++++x_range+%3D+range(2,+n)%0A++++for+x+in+x_range%3A%0A++++++++if+n+%25+x+%3D%3D+0%3A%0A++++++++++++break%0A++++else%3A%0A++++++++%23+loop+fell+through+without+finding+a+factor%0A++++++++print(n)&mode=display&cumulative=false&py=2&curInstr=43">this
+link</a> brings you directly to step 44 of 57 in a program that finds
+prime numbers using the Python <tt>for-else</tt> construct.</p>
+
+</div>
+
+    </td>
+    <td id="sharePaneTd">
+
+<div class="activityPane" id="sharePane">
+
+<h1><span id="shareHeading">EMBED</span> <span class="smallH1"> in any Web page</span></h1>
+
+<p>Using a single line of JavaScript code, you can <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/embedding-HOWTO.md">embed</a> a Python Tutor
+visualization within any Web page (as shown in the &ldquo;Learn&rdquo;
+box above). The screenshot below shows a visualization
+embedded within the online textbook for the introductory CS course at UC
+Berkeley (<a href="http://www.composingprograms.com/">CS61A</a>):
+
+</p>
+
+<a href="http://www.composingprograms.com/">
+<img src="opt-v3-cs61a-embed-small.png" style="width: 275px; border: 1px solid #aaa; margin-bottom: 10px;"/>
+</a>
+
+</div>
+
+
+<div class="activityPane" id="detailsPane">
+
+<p>
+Details:
+<ul>
+
+  <li/>Free, open-source BSD-licensed code on <a
+  href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>
+
+  <li/>View the <a
+  href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v3/docs">project
+  documentation</a> online.
+
+ <li/>Main technologies: Python, CGI, Node.js, and Docker for
+ run-time tracing backends; HTML/CSS/JavaScript with <a
+ href="http://www.jquery.org">jQuery</a>, <a
+ href="http://www.d3js.org/">D3.js</a>, <a
+ href="http://www.jsplumb.org/">jsPlumb</a>,
+ <a href="https://togetherjs.com/">TogetherJS</a>,
+ and <a
+ href="http://ace.c9.io/">Ace</a> for the frontend
+
+</ul>
+</p>
+
+<!--
+
+<p>
+Other Variants:
+<ul>
+
+  <li/><a
+  href="http://cscircles.cemc.uwaterloo.ca/java_visualize/">Online Java
+  Tutor</a>, created by <a
+  href="http://www.cs.princeton.edu/~dp6/">David Pritchard</a>
+
+  <li/><a href="http://www.onlinerubytutor.com/">Online Ruby Tutor</a>,
+  created by <a href="http://www.danielstutzman.com/">Daniel
+  Stutzman</a>
+
+  <li/><a href="http://epleweb.appspot.com/">EPLE</a>, a mash-up of
+  Online Python Tutor and <a
+  href="https://code.google.com/p/blockly/">Blockly</a>, created by <a
+  href="https://piergiu.wordpress.com/">Pier Giuliano Nioi</a>
+
+  <li/>Integration into <a
+  href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-graphterm.md">GraphTerm</a>,
+  a project created by R. Saravanan
+
+</ul>
+</p>
+
+-->
+
+</div>
+
+    </td>
+
+  </tr>
+</table>
+
+</div>
+
+
+<div id="footer">
+
+<!--
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+<br/>
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+-->
+
+<p>Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>. All rights reserved.</p>
+
+</div>
+
+
+</body>
+</html>
diff --git a/v3/java-example-code/Casting.java b/v3/java-example-code/Casting.java
new file mode 100644
index 000000000..723028813
--- /dev/null
+++ b/v3/java-example-code/Casting.java
@@ -0,0 +1,12 @@
+public class Casting {
+   public static void main(String[] args) {
+      // casting doesn't change the object
+      Object obj;
+      { 
+          Stopwatch w = new Stopwatch();
+          obj = w;
+      }
+      System.out.println(obj); // still a Stopwatch
+   }
+}
+        
\ No newline at end of file
diff --git a/v3/java-example-code/CmdLineArgs.java b/v3/java-example-code/CmdLineArgs.java
new file mode 100644
index 000000000..e03c266c9
--- /dev/null
+++ b/v3/java-example-code/CmdLineArgs.java
@@ -0,0 +1,16 @@
+public class CmdLineArgs {
+    public static void main(String[] args) {
+        // you can change "args" in the boxes below this window
+        int a = Integer.parseInt(args[0]);
+        int b = Integer.parseInt(args[1]);
+        int sum = a + b;
+        int prod = a * b;
+        int quot = a / b;
+        int rem = a % b;
+        System.out.println(a + " + " + b + " = " + sum);
+        System.out.println(a + " * " + b + " = " + prod);
+        System.out.println(a + " / " + b + " = " + quot);
+        System.out.println(a + " % " + b + " = " + rem);
+    }
+}
+/*viz_options {"args":["1234","99"]}*/
\ No newline at end of file
diff --git a/v3/java-example-code/Complex.java b/v3/java-example-code/Complex.java
new file mode 100644
index 000000000..a7264ff07
--- /dev/null
+++ b/v3/java-example-code/Complex.java
@@ -0,0 +1,154 @@
+/*************************************************************************
+ *  From: http://introcs.cs.princeton.edu/java/home/ (Section 9.7)
+ *
+ *  Compilation:  javac Complex.java
+ *  Execution:    java Complex
+ *
+ *  Data type for complex numbers.
+ *
+ *  The data type is "immutable" so once you create and initialize
+ *  a Complex object, you cannot change it. The "final" keyword
+ *  when declaring re and im enforces this rule, making it a
+ *  compile-time error to change the .re or .im fields after
+ *  they've been initialized.
+ *
+ *  % java Complex
+ *  a            = 5.0 + 6.0i
+ *  b            = -3.0 + 4.0i
+ *  Re(a)        = 5.0
+ *  Im(a)        = 6.0
+ *  b + a        = 2.0 + 10.0i
+ *  a - b        = 8.0 + 2.0i
+ *  a * b        = -39.0 + 2.0i
+ *  b * a        = -39.0 + 2.0i
+ *  a / b        = 0.36 - 1.52i
+ *  (a / b) * b  = 5.0 + 6.0i
+ *  conj(a)      = 5.0 - 6.0i
+ *  |a|          = 7.810249675906654
+ *  tan(a)       = -6.685231390246571E-6 + 1.0000103108981198i
+ *
+ *************************************************************************/
+
+public class Complex {
+   private final double re;   // the real part
+   private final double im;   // the imaginary part
+
+   // create a new object with the given real and imaginary parts
+   public Complex(double real, double imag) {
+      re = real;
+      im = imag;
+   }
+
+   // return a string representation of the invoking Complex object
+   public String toString() {
+      if (im == 0) return re + "";
+      if (re == 0) return im + "i";
+      if (im <  0) return re + " - " + (-im) + "i";
+      return re + " + " + im + "i";
+   }
+
+   // return abs/modulus/magnitude and angle/phase/argument
+   public double abs()   { return Math.hypot(re, im); }  // Math.sqrt(re*re + im*im)
+   public double phase() { return Math.atan2(im, re); }  // between -pi and pi
+
+   // return a new Complex object whose value is (this + b)
+   public Complex plus(Complex b) {
+      Complex a = this;             // invoking object
+      double real = a.re + b.re;
+      double imag = a.im + b.im;
+      return new Complex(real, imag);
+   }
+
+   // return a new Complex object whose value is (this - b)
+   public Complex minus(Complex b) {
+      Complex a = this;
+      double real = a.re - b.re;
+      double imag = a.im - b.im;
+      return new Complex(real, imag);
+   }
+
+   // return a new Complex object whose value is (this * b)
+   public Complex times(Complex b) {
+      Complex a = this;
+      double real = a.re * b.re - a.im * b.im;
+      double imag = a.re * b.im + a.im * b.re;
+      return new Complex(real, imag);
+   }
+
+   // scalar multiplication
+   // return a new object whose value is (this * alpha)
+   public Complex times(double alpha) {
+      return new Complex(alpha * re, alpha * im);
+   }
+
+   // return a new Complex object whose value is the conjugate of this
+   public Complex conjugate() {  return new Complex(re, -im); }
+
+   // return a new Complex object whose value is the reciprocal of this
+   public Complex reciprocal() {
+      double scale = re*re + im*im;
+      return new Complex(re / scale, -im / scale);
+   }
+
+   // return the real or imaginary part
+   public double re() { return re; }
+   public double im() { return im; }
+
+   // return a / b
+   public Complex divides(Complex b) {
+      Complex a = this;
+      return a.times(b.reciprocal());
+   }
+
+   // return a new Complex object whose value is the complex exponential of this
+   public Complex exp() {
+      return new Complex(Math.exp(re) * Math.cos(im), Math.exp(re) * Math.sin(im));
+   }
+
+   // return a new Complex object whose value is the complex sine of this
+   public Complex sin() {
+      return new Complex(Math.sin(re) * Math.cosh(im), Math.cos(re) * Math.sinh(im));
+   }
+
+   // return a new Complex object whose value is the complex cosine of this
+   public Complex cos() {
+      return new Complex(Math.cos(re) * Math.cosh(im), -Math.sin(re) * Math.sinh(im));
+   }
+
+   // return a new Complex object whose value is the complex tangent of this
+   public Complex tan() {
+      return sin().divides(cos());
+   }
+    
+
+
+   // a static version of plus
+   public static Complex plus(Complex a, Complex b) {
+      double real = a.re + b.re;
+      double imag = a.im + b.im;
+      Complex sum = new Complex(real, imag);
+      return sum;
+   }
+
+
+
+   // sample client for testing
+   public static void main(String[] args) {
+      Complex a = new Complex(5.0, 6.0);
+      Complex b = new Complex(-3.0, 4.0);
+
+      System.out.println("a            = " + a);
+      System.out.println("b            = " + b);
+      System.out.println("Re(a)        = " + a.re());
+      System.out.println("Im(a)        = " + a.im());
+      System.out.println("b + a        = " + b.plus(a));
+      System.out.println("a - b        = " + a.minus(b));
+      System.out.println("a * b        = " + a.times(b));
+      System.out.println("b * a        = " + b.times(a));
+      System.out.println("a / b        = " + a.divides(b));
+      System.out.println("(a / b) * b  = " + a.divides(b).times(b));
+      System.out.println("conj(a)      = " + a.conjugate());
+      System.out.println("|a|          = " + a.abs());
+   }
+
+}
\ No newline at end of file
diff --git a/v3/java-example-code/ControlFlow.java b/v3/java-example-code/ControlFlow.java
new file mode 100644
index 000000000..b3f3b44dd
--- /dev/null
+++ b/v3/java-example-code/ControlFlow.java
@@ -0,0 +1,15 @@
+public class ControlFlow {
+   public static void main(String[] args) {
+      while (true) {
+         double roll = 3*Math.random();
+         if (roll > 2.8) 
+            break;
+         if ((int)roll == 2) 
+            continue;
+         else if ((int)roll == 0)
+            System.out.println("low");
+         else
+            System.out.println("hi");
+      }
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Exception.java b/v3/java-example-code/Exception.java
new file mode 100644
index 000000000..b746c1fab
--- /dev/null
+++ b/v3/java-example-code/Exception.java
@@ -0,0 +1,17 @@
+public class Exception {
+   public static void main(String[] args) {
+      // this one will be caught
+      int x = 0;
+      try {
+         x = 1/x;
+      }
+      catch (RuntimeException e) {
+         x = -1;
+         System.out.println("Caught!");
+      }
+      System.out.println(x);
+        
+      System.out.println(1/0);
+      System.out.println("this won't run");
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/ExceptionFlow.java b/v3/java-example-code/ExceptionFlow.java
new file mode 100644
index 000000000..10ed88ae0
--- /dev/null
+++ b/v3/java-example-code/ExceptionFlow.java
@@ -0,0 +1,25 @@
+public class ExceptionFlow {
+   static String trace = "";
+   
+   static void f() {
+      trace += "call-f ";
+      g();
+      trace += "return-f ";
+   }
+   
+   static void g() {
+      trace += "call-g ";
+      int z = 1/0;
+      trace += "return-g ";
+   }
+   
+   public static void main(String[] args) {
+      try {
+         f();
+      }
+      catch (RuntimeException e) {
+         trace += "caught!";
+      }
+      System.out.println(trace);
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/ExecLimit.java b/v3/java-example-code/ExecLimit.java
new file mode 100644
index 000000000..10c925525
--- /dev/null
+++ b/v3/java-example-code/ExecLimit.java
@@ -0,0 +1,7 @@
+public class ExecLimit {
+   public static void main(String[] args) {
+      int sum = 0;
+      for (int i=0; i<300; i++)
+         sum += i;
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Forest.java b/v3/java-example-code/Forest.java
new file mode 100644
index 000000000..6571fbef1
--- /dev/null
+++ b/v3/java-example-code/Forest.java
@@ -0,0 +1,34 @@
+// Princeton COS 126 Written Exam 2, Fall 2010, Question 3
+// note: this is a proof-of-concept, but to do this on
+// paper you would instead skip as many internal steps of
+// root, merge, and merged as possible
+
+public class Node {
+   private Node next;
+   private int index;
+   private Node root() {
+      if (next == null) return this;
+      return next.root();
+   }
+   public static void merge(Node a, Node b) {
+      a.root().next = b.root();
+   }
+   public static boolean merged(Node a, Node b) {
+      return a.root() == b.root();
+   }
+   public static void main(String[] args) {
+      Node[] f = new Node[8];
+      for (int i=0; i<8; i++) {f[i] = new Node(); f[i].index=i;}
+      merge(f[0], f[3]);
+      merge(f[1], f[2]);
+      merge(f[1], f[4]);
+      merge(f[5], f[6]);
+      merge(f[3], f[4]);
+      merge(f[7], f[5]);
+      
+      System.out.println(merged(f[0], f[3]));
+      System.out.println(merged(f[0], f[7]));
+      System.out.println(merged(f[1], f[3]));
+      System.out.println(merged(f[4], f[5]));
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Knapsack.java b/v3/java-example-code/Knapsack.java
new file mode 100644
index 000000000..38270228a
--- /dev/null
+++ b/v3/java-example-code/Knapsack.java
@@ -0,0 +1,13 @@
+public class Knapsack {
+   public static void main(String[] args) {
+      int[] itemSizes = {3, 5, 6, 8};
+      int capacity = 15;
+      boolean[] canMakeSum = new boolean[capacity+1];
+      canMakeSum[0] = true;
+      for (int size : itemSizes) {
+         for (int i=capacity; i>=size; i--)
+            canMakeSum[i] |= canMakeSum[i-size];
+      }
+      System.out.println(java.util.Arrays.toString(canMakeSum));
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/LambdaExample.java b/v3/java-example-code/LambdaExample.java
new file mode 100644
index 000000000..8416b4473
--- /dev/null
+++ b/v3/java-example-code/LambdaExample.java
@@ -0,0 +1,22 @@
+import java.util.function.*;
+
+public class LambdaExample {
+    // note: this only works in Java 8
+   
+   static Function<Integer, Integer> inc(int x) {
+      return y -> x+y;
+   }
+   
+   static Function<Integer, Integer> mul(int x) {
+      return y -> x*y;
+   }
+
+   public static void main(String[] args) {
+      // bad style, generic erasure to get array
+      Function[] fs = {inc(5), inc(10), mul(7), mul(2)};
+      
+      for (Function f : fs) 
+         System.out.println(
+            ((Function<Integer, Integer>)f).apply(100));
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/LinkedList.java b/v3/java-example-code/LinkedList.java
new file mode 100644
index 000000000..18acff81c
--- /dev/null
+++ b/v3/java-example-code/LinkedList.java
@@ -0,0 +1,43 @@
+// named after barrel of monkeys:
+// each one hangs on to the next
+public class LinkedList {
+   
+   // structure of items in list
+   class Node {
+      // each node knows "next" node
+      Node next;
+      // and stores a value
+      String name;
+      // constructor for nodes
+      Node(String initialName) {
+         name = initialName;
+      }
+   }
+   
+   // beginning of the list, initially empty
+   private Node first = null;
+   
+   // a demo to create a length-3 list
+   public void threeKongs() {
+      first = new Node("DK Sr.");
+      first.next = new Node("DK");
+      first.next.next = new Node("DK Jr.");
+   }
+   
+   // use a loop to print all
+   public void printAll() {
+      // a while loop also can work
+      for (Node current = first;
+           current != null;
+           current = current.next) {
+         System.out.println(current.name);
+      }
+   }
+
+   public static void main(String[] args) {
+      LinkedList mc = new LinkedList();
+      mc.threeKongs();
+      mc.printAll();
+   }
+}
+/*viz_options {"disableNesting":true}*/
\ No newline at end of file
diff --git a/v3/java-example-code/PassByValue.java b/v3/java-example-code/PassByValue.java
new file mode 100644
index 000000000..41d554dd1
--- /dev/null
+++ b/v3/java-example-code/PassByValue.java
@@ -0,0 +1,28 @@
+public class PassByValue {
+   
+   static void reset(int x) {
+      x = 0;
+   }
+   
+   static void reset(int[] x) {
+      for (int i : x) 
+         i = 0;
+   }
+   
+   static void reallyReset(int[] x) {
+      for (int i=0; i<x.length; i++)
+         x[i] = 0;
+   }
+   
+   public static void main(String[] args) {
+      int a = 3;
+      int[] arr = {5, 10, 15};
+      reset(a); // this won't work
+      System.out.println(a);
+      reset(arr); // this won't work
+      System.out.println(java.util.Arrays.toString(arr));
+      reallyReset(arr); // this works!
+      System.out.println(java.util.Arrays.toString(arr));
+   }
+   
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Person.java b/v3/java-example-code/Person.java
new file mode 100644
index 000000000..bd6af7b55
--- /dev/null
+++ b/v3/java-example-code/Person.java
@@ -0,0 +1,60 @@
+// demonstrates static/non-static fields and methods
+// simulates a person (not in the Blade Runner sense)
+public class Person {
+   // instance variable: age of this person
+   private int age;                    
+
+   // another instance variable: name of this person
+   private String name;                
+
+   // static variable (shared by all instances): global population
+   private static int population = 0;
+    
+   // constructor
+   public Person(int a, String n) {
+      // copy arguments of constructor to instance variables
+      age = a;
+      name = n;
+
+      // increase the static counter
+      population++;
+   }
+
+   // static method (not per-instance)
+   public static void printPop() {
+      System.out.println(population);
+   }
+
+   // instance method
+   public void printName() {
+      System.out.println(name);
+   }
+
+   // another instance method
+   public void printInfo() {                 
+      System.out.println(age);
+ 
+      // calling an instance method without a period
+      // (uses same instance as what printInfo was called on)
+      printName();
+   }
+
+   public static void main(String[] args) {
+      // calling a static method using class name and period
+      // what is the output?
+      Person.printPop();     
+                          
+      // how many instances does this construct?
+      Person myDad = new Person(33, "Lucius");
+      Person myMom = new Person(44, "Pandora");
+      Person myDentist = myMom;
+
+      // calling an instance method using instance name and period
+      myDentist.printInfo();     
+                   
+      // calling a static method without a period
+      // (uses Person, the containing class, by default)
+      // what is the output?
+      printPop();
+   }
+}
diff --git a/v3/java-example-code/Postfix.java b/v3/java-example-code/Postfix.java
new file mode 100644
index 000000000..b9868c3ff
--- /dev/null
+++ b/v3/java-example-code/Postfix.java
@@ -0,0 +1,17 @@
+public class Postfix {
+   // example of using a stack
+   public static void main(String[] args) {
+      Stack<Integer> stacky = new Stack<>();
+      for (char ch : "123+45*6-+-".toCharArray()) {
+         if (ch == '+') 
+            stacky.push(stacky.pop() + stacky.pop());
+         else if (ch == '*')
+            stacky.push(stacky.pop() * stacky.pop());
+         else if (ch == '-')
+            stacky.push(-stacky.pop() + stacky.pop());
+         else
+            stacky.push(ch-'0');
+      }
+      System.out.println(stacky.pop());
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/README b/v3/java-example-code/README
new file mode 100644
index 000000000..5805a4a2d
--- /dev/null
+++ b/v3/java-example-code/README
@@ -0,0 +1,3 @@
+adapted from https://github.com/daveagp/java_visualize/tree/master/example-code
+
+examples created by David Pritchard
diff --git a/v3/java-example-code/Recursion.java b/v3/java-example-code/Recursion.java
new file mode 100644
index 000000000..031da5d12
--- /dev/null
+++ b/v3/java-example-code/Recursion.java
@@ -0,0 +1,10 @@
+public class Recursion {
+   public static void ruler(int n) {
+      if (n>0) ruler(n-1);
+      System.out.println(n);
+      if (n>0) ruler(n-1);
+   }
+   public static void main(String[] args) {
+      ruler(2);
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Reflect.java b/v3/java-example-code/Reflect.java
new file mode 100644
index 000000000..369c8dc35
--- /dev/null
+++ b/v3/java-example-code/Reflect.java
@@ -0,0 +1,15 @@
+import java.lang.reflect.*;
+
+public class Reflect {
+   public static void announce() {
+      System.out.println("Someone called announce().");
+   }
+   public static void main(String[] args) {
+      try {
+         Method m = Reflect.class.getMethod("announce", null);
+         m.invoke(null); // null "this" since it's a static method
+      }
+      catch (NoSuchMethodException | IllegalAccessException 
+             | InvocationTargetException e) {}
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Rolex.java b/v3/java-example-code/Rolex.java
new file mode 100644
index 000000000..7e7d80c1f
--- /dev/null
+++ b/v3/java-example-code/Rolex.java
@@ -0,0 +1,37 @@
+public class Rolex {    
+   private final long start;
+        
+   public Rolex() {
+      start = System.currentTimeMillis();
+   } 
+    
+   // return time (in seconds) since this object was created
+   public double elapsedTime() {
+      long now = System.currentTimeMillis();
+      return (now - start) / 1000.0;
+   } 
+        
+   public static void main(String[] args) {
+      Rolex watchOne = new Rolex();
+      // waste time so it is large enough to be measurable
+      try {Thread.sleep(500);} catch (InterruptedException e) {}
+        
+      Rolex watchTwo = new Rolex(); 
+      // waste time so it is large enough to be measurable
+      try {Thread.sleep(500);} catch (InterruptedException e) {}
+
+      // right now, watchOne is older
+      System.out.println("watchOne " + watchOne.elapsedTime());
+      System.out.println("watchTwo " + watchTwo.elapsedTime());
+        
+      Rolex watchTmp = watchOne;
+      watchOne = watchTwo;
+      watchTwo = watchTmp; 
+        
+      // swapped! now watchTwo is the older one
+      // e.g. watchTwo.elapsedTime() returns a value
+      // (slightly) larger than watchOne.elapsedTime()
+      System.out.println("watchOne " + watchOne.elapsedTime());
+      System.out.println("watchTwo " + watchTwo.elapsedTime());
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Sqrt.java b/v3/java-example-code/Sqrt.java
new file mode 100644
index 000000000..3ebb25916
--- /dev/null
+++ b/v3/java-example-code/Sqrt.java
@@ -0,0 +1,14 @@
+public class Sqrt {
+   public static void main(String[] args) {
+      double target = 2013;
+      double x = 1;
+      double oldx;
+      do {
+         oldx = x;
+         x = (x + target / x) / 2;
+      }
+      while (oldx != x);
+      System.out.println(x);
+      System.out.println(x*x);
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/StackOverflow.java b/v3/java-example-code/StackOverflow.java
new file mode 100644
index 000000000..8092ab026
--- /dev/null
+++ b/v3/java-example-code/StackOverflow.java
@@ -0,0 +1,9 @@
+public class StackOverflow {
+   private static void burn(int i) {
+      i = i + 1;
+      burn(i);
+   }
+   public static void main(String[] args) {
+      burn(0);
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/StackQueue.java b/v3/java-example-code/StackQueue.java
new file mode 100644
index 000000000..1c7bb847a
--- /dev/null
+++ b/v3/java-example-code/StackQueue.java
@@ -0,0 +1,22 @@
+public class StackQueue {
+   public static void main(String[] args) {
+      Stack<String> stack = new Stack<>();
+      Queue<String> queue = new Queue<>();
+
+      stack.push("stack-first");
+      stack.push("stack-last");
+
+      queue.enqueue("queue-first");
+      queue.enqueue("queue-last");
+
+      for (String s : stack) 
+         System.out.println("stack contains " + s);
+      for (String s : queue)
+         System.out.println("queue contains " + s);
+
+      while (!stack.isEmpty())
+         System.out.println(stack.pop());
+      while (!queue.isEmpty())
+         System.out.println(queue.dequeue());
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/StaticInitializer.java b/v3/java-example-code/StaticInitializer.java
new file mode 100644
index 000000000..d1a55b8bc
--- /dev/null
+++ b/v3/java-example-code/StaticInitializer.java
@@ -0,0 +1,9 @@
+public class StaticInitializer {
+   static {
+      // static initializer, runs when class is initialized
+      System.out.println("When will this print?");
+   }
+   public static void main(String[] args) {
+      System.out.println("Now we're in main");
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/StdIn.java b/v3/java-example-code/StdIn.java
new file mode 100644
index 000000000..09757c3c2
--- /dev/null
+++ b/v3/java-example-code/StdIn.java
@@ -0,0 +1,12 @@
+public class StdInDemo {
+    public static void main(String[] args) {
+        StdOut.println("int: " + StdIn.readInt());
+        StdOut.println("double: " + StdIn.readDouble());
+        StdOut.println("String (token): " + StdIn.readString());
+        StdOut.println("char: " + StdIn.readChar());
+        StdOut.println("char: " + StdIn.readChar());
+        StdOut.println("line: " + StdIn.readLine());
+        StdOut.println("empty?: " + StdIn.isEmpty());
+    }
+}
+/*viz_options {"stdin":"13  3.4  mytoken chars rest of line\nanother line"} */
\ No newline at end of file
diff --git a/v3/java-example-code/Strings.java b/v3/java-example-code/Strings.java
new file mode 100644
index 000000000..b425ca12e
--- /dev/null
+++ b/v3/java-example-code/Strings.java
@@ -0,0 +1,15 @@
+public class Strings {
+   public static void main(String[] args) { 
+      String a = "Hello, world!";
+      String b = "Hello, world!!".substring(0, 13);
+      String c = "Hello, ";
+      c += "world!";
+      String d = "Hello, w"+"orld!"; // constant expr, interned
+      String e = a.substring(0, 13);
+      System.out.println((a == b) + " " + a.equals(b));
+      System.out.println((a == c) + " " + a.equals(c));
+      System.out.println((a == d) + " " + a.equals(d));
+      System.out.println((a == e) + " " + a.equals(e));
+   }
+}
+/*viz_options {"showStringsAsObjects":true}*/
\ No newline at end of file
diff --git a/v3/java-example-code/SymbolTable.java b/v3/java-example-code/SymbolTable.java
new file mode 100644
index 000000000..605916f0c
--- /dev/null
+++ b/v3/java-example-code/SymbolTable.java
@@ -0,0 +1,12 @@
+public class SymbolTable {
+   public static void main(String[] args) {
+      ST<String, String> st = new ST<>();
+      st.put("key1", "value1");
+      st.put("key2", "value2");
+      st.put("key3", "value3");
+      st.put("key1", "different value");
+      st.delete("key2");
+      for (String s : st.keys())
+         StdOut.println(s + " " + st.get(s));
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/Synthetic.java b/v3/java-example-code/Synthetic.java
new file mode 100644
index 000000000..4e7001bbf
--- /dev/null
+++ b/v3/java-example-code/Synthetic.java
@@ -0,0 +1,32 @@
+public class Synthetic {
+    
+   class Inner {
+      // contains auto-generated (synthetic) 
+      // field "this$0" of type Synthetic
+   }
+
+   public static void main(String[] args) {
+      Synthetic a = new Synthetic();
+      Synthetic b = new Synthetic();
+      Inner c = a.new Inner();
+      Inner d = b.new Inner();
+      // end of first
+
+      final String[] magic = {"7", "8"};
+      // anonymous class
+      Object e = new Object(){
+              public String toString() {
+                  return magic[1];
+              }
+      };
+      // it has a synthetic variable val$magic
+      System.out.println(e.toString());
+
+      class Local {
+         void foo() {System.out.println(magic.length);}
+      }
+      Local x = new Local();
+      x.foo();
+   }
+}
+/*viz_options {"showAllFields":true}*/
\ No newline at end of file
diff --git a/v3/java-example-code/ToString.java b/v3/java-example-code/ToString.java
new file mode 100644
index 000000000..c97a096fb
--- /dev/null
+++ b/v3/java-example-code/ToString.java
@@ -0,0 +1,13 @@
+public class ToString {
+   int x;
+   
+   public String toString() {
+      return "Instance with x = " + x;
+   }
+   
+   public static void main(String[] args) {
+      ToString ts = new ToString();
+      ts.x = 5;
+      System.out.println(ts);
+   }
+}
\ No newline at end of file
diff --git a/v3/java-example-code/TwoClasses.java b/v3/java-example-code/TwoClasses.java
new file mode 100644
index 000000000..542166c5c
--- /dev/null
+++ b/v3/java-example-code/TwoClasses.java
@@ -0,0 +1,13 @@
+public class TwoClasses {
+    String message = "Can you put two classes in one file?";
+    void proclaim() {
+        System.out.println(message);
+    }
+    public static void main(String[] args) {
+        new TwoClasses().proclaim();
+        new AnotherClass().proclaim();
+    }
+}
+class AnotherClass extends TwoClasses{
+    {message = "Yup";} // instance initializer
+}
diff --git a/v3/java-example-code/Variables.java b/v3/java-example-code/Variables.java
new file mode 100644
index 000000000..6d95fb638
--- /dev/null
+++ b/v3/java-example-code/Variables.java
@@ -0,0 +1,15 @@
+public class Variables {
+   public static void main(String[] args) {
+      String me = "me";
+      String you = "you";
+      String tmp = me;
+      me = you;
+      you = tmp;
+
+      int x = 5;
+      int y = 10;
+      int t = x;
+      x = y;
+      y = t;
+   }
+}
\ No newline at end of file
diff --git a/v3/java.html b/v3/java.html
new file mode 100644
index 000000000..d16c1c70f
--- /dev/null
+++ b/v3/java.html
@@ -0,0 +1,409 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Java Tutor - Visualize Java code execution to learn Java online</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<link type="text/css" href="css/jquery.ui.chatbox.css" rel="stylesheet" />
+<script type="text/javascript" src="js/jquery.ui.chatbox.js"></script>
+
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/holistic.js"></script>
+<link rel="stylesheet" href="css/holistic.css"/>
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-frontend.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+<script type="text/javascript" src="js/socket.io-client/socket.io.js"></script>
+
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<script type="text/javascript">
+
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-34795707-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
+
+</head>
+
+<body>
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+
+<!--
+
+<div id="adInfo" style="font-size: 8pt; width: 180px; margin-bottom: 15px;">
+
+<a href="#" id="hideHeaderLink">Hide banner ad</a>
+
+<br/><br/>
+This tool is free and <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">open-source</a>.
+Ads pay for web hosting costs.
+
+-->
+
+</div>
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 7pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div>
+<button id="getTutorBtn" type="button" class="togetherjsBtn" style="display: none;">
+Get help from a tutor
+</button>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+<td valign="top">
+
+<div id="togetherjsStatus"></div>
+
+<div id="surveyHeader"></div>
+
+<div id="adHeader" style="margin-left: 15px; margin-bottom: 35px;">
+
+<div id="optHeader" style="font-family: Georgia, Palatino, Times, serif; font-size: 13pt; margin-bottom: 10px;">
+Java Tutor - Visualize Java code execution to learn Java online
+
+<p style="font-size: 10pt";>
+(also visualize
+<a href="visualize.html#py=2">Python</a>,
+<a href="java.html">Java</a>,
+<a href="javascript.html">JavaScript</a>,
+<a href="typescript.html">TypeScript</a>,
+<a href="ruby.html">Ruby</a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html">C</a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++</a>
+code)
+</p>
+
+</div>
+
+<!--
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<ins class="adsbygoogle"
+     style="display:inline-block;width:728px;height:90px"
+     data-ad-client="ca-pub-7519401450079227"
+     data-ad-slot="9796201192"></ins>
+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
+</script>
+-->
+
+</div>
+
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write Java code here:
+
+  <select id="pythonVersionSelector" style="display: none;">
+    <option value="java">Java</option>
+  </select>
+
+</div>
+
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+
+<div id="javaOptionsPane" style="margin-top: 20px;">
+[<i>coming soon!</i>] Java options: pass in command-line arguments and feed user input to stdin
+</div>
+
+
+<div id="optionsPane" style="margin-top: 18px; line-height: 150%; display: none;">
+  <select id="cumulativeModeSelector" style="display: none;">
+    <option value="false">hide exited frames [default]</option>
+  </select>
+  <select id="heapPrimitivesSelector" style="display: none;">
+    <option value="false">inline primitives &amp; nested objects [default]</option>
+  </select>
+  <select id="textualMemoryLabelsSelector" style="display: none;">
+    <option value="false">draw pointers as arrows [default]</option>
+  </select>
+
+  <!-- hide these for now -->
+  <select id="drawParentPointerSelector" style="display: none;">
+    <option value="false">hide environment parent pointers (default)</option>
+    <!--<option value="true">show environment parent pointers</option>-->
+  </select>
+  <select id="showOnlyOutputsSelector" style="display: none;">
+    <option value="false">show everything (default)</option>
+    <!--<option value="true">show only outputs</option>-->
+  </select>
+</div>
+
+
+<p style="margin-top: 25px; display: none;"><a href="#" id="createTestsLink">Create test cases</a></p>
+
+<div id="testCasesPane"></div>
+
+<p style="margin-top: 25px; font-weight: bold;">Java Examples</p>
+
+<p>
+Basic:
+<a class="exampleLink" id="javaVarLink" href="#">Variables</a> |
+<a class="exampleLink" id="javaCFLink" href="#">ControlFlow</a> |
+<a class="exampleLink" id="javaSqrtLink" href="#">Sqrt</a> |
+<a class="exampleLink" id="javaExecLimitLink" href="#">ExecLimit</a> |
+<a class="exampleLink" id="javaStringsLink" href="#">Strings</a>
+</p>
+
+<p>
+Methods:
+<a class="exampleLink" id="javaPassByValLink" href="#">PassByValue</a> |
+<a class="exampleLink" id="javaRecurLink" href="#">Recursion</a> |
+<a class="exampleLink" id="javaSOLink" href="#">StackOverflow</a>
+</p>
+
+<p>
+OOP:
+<a class="exampleLink" id="javaRolexLink" href="#">Rolex</a> |
+<a class="exampleLink" id="javaPersonLink" href="#">Person</a> |
+<a class="exampleLink" id="javaComplexLink" href="#">Complex</a> |
+<a class="exampleLink" id="javaCastingLink" href="#">Casting</a>
+</p>
+
+<p>
+Data structures:
+<a class="exampleLink" id="javaLLLink" href="#">LinkedList</a> |
+<a class="exampleLink" id="javaStackQueueLink" href="#">StackQueue</a> |
+<a class="exampleLink" id="javaPostfixLink" href="#">Postfix</a> |
+<a class="exampleLink" id="javaSTLink" href="#">SymbolTable</a>
+</p>
+
+<p>
+Java features:
+<a class="exampleLink" id="javaToStringLink" href="#">ToString</a> |
+<a class="exampleLink" id="javaReflectLink" href="#">Reflect</a> |
+<a class="exampleLink" id="javaExceptionLink" href="#">Exception</a> |
+<a class="exampleLink" id="javaExceptionFlowLink" href="#">ExceptionFlow</a> |
+<a class="exampleLink" id="javaTwoClassesLink" href="#">TwoClasses</a>
+</p>
+
+<p>
+Misc:
+<a class="exampleLink" id="javaForestLink" href="#">Forest</a> |
+<a class="exampleLink" id="javaKnapsackLink" href="#">Knapsack</a> |
+<a class="exampleLink" id="javaStaticInitLink" href="#">StaticInitializer</a> |
+<a class="exampleLink" id="javaSyntheticLink" href="#">Synthetic</a>
+</p>
+
+<p style="margin-top: 5px;">(All Java examples created by <a href="https://github.com/daveagp">David Pritchard</a>)</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<div id="embedLinkDiv">
+<p>
+  <button id="genEmbedBtn" class="smallBtn" type="button">Generate embed code</button> <input type="text" id="embedCodeOutput" size="70"/>
+</p>
+
+<p>To embed this visualization in your webpage, click the 'Generate
+embed code' button above and paste the resulting HTML code into your
+webpage. Adjust the height and width parameters and
+change the link to <b>https://</b> if needed.</p>
+</div>
+
+<p style="margin-top: 25px;">
+
+This tool runs Java using OpenJDK Java 7. The original <a
+href="http://cscircles.cemc.uwaterloo.ca/java_visualize/">Java
+visualizer</a> was created by <a href="https://github.com/daveagp">David Pritchard</a> and Will Gwozdz.
+It supports
+<code><a href="http://introcs.cs.princeton.edu/java/stdlib/javadoc/StdIn.html">StdIn</a></code>, 
+<code><a href="http://introcs.cs.princeton.edu/java/stdlib/javadoc/StdOut.html">StdOut</a></code>, 
+most other <a href="http://introcs.cs.princeton.edu/java/stdlib"><tt>stdlib</tt> libraries</a>,
+<a href="http://introcs.cs.princeton.edu/java/43stack/Stack.java.html"><tt>Stack</tt></a>,
+<a href="http://introcs.cs.princeton.edu/java/43stack/Queue.java.html"><tt>Queue</tt></a>,
+and <a href="http://introcs.cs.princeton.edu/java/44st/ST.java.html"><tt>ST</tt></a>.
+(To access Java's built-in <tt>Stack</tt>/<tt>Queue</tt> classes, write
+<tt>import java.util.Stack;</tt> &mdash; note, <tt>import
+java.util.*;</tt> won't work.)
+Original source
+code: for <a href="https://github.com/daveagp/java_jail/tree/master/cp/traceprinter">the backend</a> and for <a href="https://github.com/daveagp/java_visualize">the frontend and installation
+instructions.</a></p>
+
+<p style="margin-top: 30px;">Privacy Policy: By using Online Python
+Tutor, your visualized code, options, user interactions, text chats, and
+IP address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, the Online Python Tutor website (pythontutor.com) does
+not collect any personal information or session state from users, nor
+does it issue any cookies.</p>
+
+<!--
+
+<p>
+
+Third party vendors, including Google, use cookies to serve ads based on a
+user's prior visits to pythontutor.com. Google's use of the DoubleClick cookie
+enables it and its partners to serve ads to your users based on their visit to
+pythontutor.com and/or other sites on the Internet. Users may opt out of the use
+of the DoubleClick cookie by visiting Ads Settings. (Alternatively, users may
+opt out of a third-party vendor's use of cookies for interest based advertising
+by visiting <a href="http://www.aboutads.info/">aboutads.info</a>.) Some of our
+advertising partners may use cookies and web beacons on our site. Our
+advertising partners include Google Adsense. These third-party ad servers or ad
+networks use technology to the advertisements and links that appear on
+pythontutor.com send directly to your browsers. They automatically receive your
+IP address when this occurs. Other technologies (such as cookies, JavaScript,
+or Web Beacons) may also be used by the third-party ad networks to measure the
+effectiveness of their advertisements and / or to personalize the advertising
+content that you see.
+
+pythontutor.com has no access to or control over these cookies that are used by
+third-party advertisers. Consult the respective privacy policies of these
+third-party ad servers for more detailed information on their practices as well
+as for instructions about how to opt-out of certain practices. pythontutor.com's
+privacy policy does not apply to, and we cannot control the activities of, such
+other advertisers or web sites. If you wish to disable cookies, you may do so
+through your individual browser options.
+
+</p>
+
+-->
+
+<!--
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+-->
+
+<p style="margin-top: 25px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<div id="chat_div"></div>
+
+</body>
+</html>
diff --git a/v3/javascript.html b/v3/javascript.html
new file mode 100644
index 000000000..028951ada
--- /dev/null
+++ b/v3/javascript.html
@@ -0,0 +1,356 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>JavaScript Tutor - Visualize JavaScript code execution to learn
+  JavaScript online</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<link type="text/css" href="css/jquery.ui.chatbox.css" rel="stylesheet" />
+<script type="text/javascript" src="js/jquery.ui.chatbox.js"></script>
+
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/holistic.js"></script>
+<link rel="stylesheet" href="css/holistic.css"/>
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-frontend.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+<script type="text/javascript" src="js/socket.io-client/socket.io.js"></script>
+
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<script type="text/javascript">
+
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-34795707-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
+
+</head>
+
+<body>
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+
+<!--
+
+<div id="adInfo" style="font-size: 8pt; width: 180px; margin-bottom: 15px;">
+
+<a href="#" id="hideHeaderLink">Hide banner ad</a>
+
+<br/><br/>
+This tool is free and <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">open-source</a>.
+Ads pay for web hosting costs.
+
+-->
+
+</div>
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 7pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div>
+<button id="getTutorBtn" type="button" class="togetherjsBtn" style="display: none;">
+Get help from a tutor
+</button>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+<td valign="top">
+
+<div id="togetherjsStatus"></div>
+
+<div id="surveyHeader"></div>
+
+<div id="adHeader" style="margin-left: 15px; margin-bottom: 35px;">
+
+<div id="optHeader" style="font-family: Georgia, Palatino, Times, serif; font-size: 13pt; margin-bottom: 10px;">
+JavaScript Tutor - Visualize JavaScript code execution to learn JavaScript online
+
+<p style="font-size: 10pt";>
+(also visualize
+<a href="visualize.html#py=2">Python</a>,
+<a href="java.html">Java</a>,
+<a href="javascript.html">JavaScript</a>,
+<a href="typescript.html">TypeScript</a>,
+<a href="ruby.html">Ruby</a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html">C</a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++</a>
+code)
+</p>
+
+</div>
+
+<!--
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<ins class="adsbygoogle"
+     style="display:inline-block;width:728px;height:90px"
+     data-ad-client="ca-pub-7519401450079227"
+     data-ad-slot="9796201192"></ins>
+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
+</script>
+-->
+
+</div>
+
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write JavaScript code here:
+
+  <select id="pythonVersionSelector" style="display: none;">
+    <option value="js">JavaScript</option>
+  </select>
+
+</div>
+
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+
+<div id="javaOptionsPane" style="margin-top: 20px;">
+[<i>coming soon!</i>] Java options: pass in command-line arguments and feed user input to stdin
+</div>
+
+
+<div id="optionsPane" style="margin-top: 18px; line-height: 150%; display: none;">
+  <select id="cumulativeModeSelector" style="display: none;">
+    <option value="false">hide exited frames [default]</option>
+  </select>
+  <select id="heapPrimitivesSelector" style="display: none;">
+    <option value="false">inline primitives &amp; nested objects [default]</option>
+  </select>
+  <select id="textualMemoryLabelsSelector" style="display: none;">
+    <option value="false">draw pointers as arrows [default]</option>
+  </select>
+
+  <!-- hide these for now -->
+  <select id="drawParentPointerSelector" style="display: none;">
+    <option value="false">hide environment parent pointers (default)</option>
+    <!--<option value="true">show environment parent pointers</option>-->
+  </select>
+  <select id="showOnlyOutputsSelector" style="display: none;">
+    <option value="false">show everything (default)</option>
+    <!--<option value="true">show only outputs</option>-->
+  </select>
+</div>
+
+
+<p style="margin-top: 25px;"><a href="#" id="createTestsLink">Create test cases</a></p>
+
+<div id="testCasesPane"></div>
+
+<p style="margin-top: 25px; font-weight: bold;">JavaScript Examples</p>
+
+<p style="margin-top: 5px;">
+  <a class="exampleLink" id="jsFactExLink" href="#">factorial</a> |
+  <a class="exampleLink" id="jsDatatypesExLink" href="#">data types</a> |
+  <a class="exampleLink" id="jsExceptionExLink" href="#">exception</a> |
+  <a class="exampleLink" id="jsClosureExLink" href="#">closure</a> |
+  <a class="exampleLink" id="jsShadowingExLink" href="#">shadowing</a> |
+  <a class="exampleLink" id="jsConstructorExLink" href="#">constructor</a> |
+  <a class="exampleLink" id="jsInhExLink" href="#">inheritance</a>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<div id="embedLinkDiv">
+<p>
+  <button id="genEmbedBtn" class="smallBtn" type="button">Generate embed code</button> <input type="text" id="embedCodeOutput" size="70"/>
+</p>
+
+<p>To embed this visualization in your webpage, click the 'Generate
+embed code' button above and paste the resulting HTML code into your
+webpage. Adjust the height and width parameters and
+change the link to <b>https://</b> if needed.</p>
+</div>
+
+<p style="margin-top: 25px;">
+
+This tool runs JavaScript in Node.js v0.10.25 in ES5 strict mode. <a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi/backends/javascript">Backend
+source code</a>.</p>
+
+<p style="margin-top: 30px;">Privacy Policy: By using Online Python
+Tutor, your visualized code, options, user interactions, text chats, and
+IP address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, the Online Python Tutor website (pythontutor.com) does
+not collect any personal information or session state from users, nor
+does it issue any cookies.</p>
+
+<!--
+
+<p>
+
+Third party vendors, including Google, use cookies to serve ads based on a
+user's prior visits to pythontutor.com. Google's use of the DoubleClick cookie
+enables it and its partners to serve ads to your users based on their visit to
+pythontutor.com and/or other sites on the Internet. Users may opt out of the use
+of the DoubleClick cookie by visiting Ads Settings. (Alternatively, users may
+opt out of a third-party vendor's use of cookies for interest based advertising
+by visiting <a href="http://www.aboutads.info/">aboutads.info</a>.) Some of our
+advertising partners may use cookies and web beacons on our site. Our
+advertising partners include Google Adsense. These third-party ad servers or ad
+networks use technology to the advertisements and links that appear on
+pythontutor.com send directly to your browsers. They automatically receive your
+IP address when this occurs. Other technologies (such as cookies, JavaScript,
+or Web Beacons) may also be used by the third-party ad networks to measure the
+effectiveness of their advertisements and / or to personalize the advertising
+content that you see.
+
+pythontutor.com has no access to or control over these cookies that are used by
+third-party advertisers. Consult the respective privacy policies of these
+third-party ad servers for more detailed information on their practices as well
+as for instructions about how to opt-out of certain practices. pythontutor.com's
+privacy policy does not apply to, and we cannot control the activities of, such
+other advertisers or web sites. If you wish to disable cookies, you may do so
+through your individual browser options.
+
+</p>
+
+-->
+
+<!--
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+-->
+
+<p style="margin-top: 25px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<div id="chat_div"></div>
+
+</body>
+</html>
diff --git a/v3/js-example-code/caught-exception.js b/v3/js-example-code/caught-exception.js
new file mode 100644
index 000000000..8675219ed
--- /dev/null
+++ b/v3/js-example-code/caught-exception.js
@@ -0,0 +1,11 @@
+try {
+  var x = 5;
+  throw new Error("oh crapo");
+}
+catch (e) {
+  console.log('hello');
+  console.log('caught');
+}
+finally {
+  console.log('done');
+}
diff --git a/v3/js-example-code/closure1.js b/v3/js-example-code/closure1.js
new file mode 100644
index 000000000..2606e1859
--- /dev/null
+++ b/v3/js-example-code/closure1.js
@@ -0,0 +1,12 @@
+var globalZ = 10;
+
+function foo(y) {
+    function bar(x) {
+        globalZ += 100;
+        return x + y + globalZ;
+    }
+    return bar;
+}
+
+var b = foo(1);
+b(2);
diff --git a/v3/js-example-code/constructor.js b/v3/js-example-code/constructor.js
new file mode 100644
index 000000000..404aa617d
--- /dev/null
+++ b/v3/js-example-code/constructor.js
@@ -0,0 +1,11 @@
+function Vector(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+Vector.prototype.plus = function(other) {
+  return new Vector(this.x + other.x, this.y + other.y);
+};
+
+var v1 = new Vector(1, 2);
+var v2 = Vector(20, 30); // whoops, forgot 'new'
diff --git a/v3/js-example-code/data-types.js b/v3/js-example-code/data-types.js
new file mode 100644
index 000000000..b31728f03
--- /dev/null
+++ b/v3/js-example-code/data-types.js
@@ -0,0 +1,22 @@
+var intNum = 42;
+var floatNum = 3.14159;
+var nanNum = NaN;
+var infNum = Infinity;
+var ninfNum = -Infinity;
+
+var str = "hello world";
+
+var boolTrue = true;
+var boolFalse = false;
+
+var nullVal = null;
+var undefVal = undefined;
+
+var lst = ['a', 'b', 3, 4, 5, 'f'];
+
+var obj = {name: 'John', age: 35, hasChildren: true};
+
+var i = 5;
+var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];
+
+obj.name = 'Jane';
diff --git a/v3/js-example-code/fact.js b/v3/js-example-code/fact.js
new file mode 100644
index 000000000..1c156a0d1
--- /dev/null
+++ b/v3/js-example-code/fact.js
@@ -0,0 +1,11 @@
+function fact(n) {
+  if (n == 0) {
+    return 1;
+  }
+  else {
+    return n * fact(n-1);
+  }
+}
+
+fact(3);
+fact(3);
diff --git a/v3/js-example-code/inheritance.js b/v3/js-example-code/inheritance.js
new file mode 100644
index 000000000..67b12f2a5
--- /dev/null
+++ b/v3/js-example-code/inheritance.js
@@ -0,0 +1,26 @@
+// Adapted from Effective JavaScript
+function Actor(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+Actor.prototype.moveTo = function(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+function SpaceShip(x, y) {
+  Actor.call(this, x, y);
+  this.points = 0;
+}
+
+SpaceShip.prototype = Object.create(Actor.prototype); // inherit!
+SpaceShip.prototype.type = "spaceship";
+SpaceShip.prototype.scorePoint = function() {
+  this.points++;
+}
+
+var s = new SpaceShip(10, 20);
+s.moveTo(30, 40);
+s.scorePoint();
+s.scorePoint();
diff --git a/v3/js-example-code/var-shadowing2.js b/v3/js-example-code/var-shadowing2.js
new file mode 100644
index 000000000..0b4853d51
--- /dev/null
+++ b/v3/js-example-code/var-shadowing2.js
@@ -0,0 +1,13 @@
+var x = 10; // global
+function foo() {
+  var x = 10;
+  function bar() {
+    var y = x;
+    x *= 2;
+    console.log(x, y);
+  }
+  return bar;
+}
+var b = foo();
+// x inside of bar should be the x in foo, *not* the global x
+b(); 
diff --git a/v3/js/ace/README.txt b/v3/js/ace/README.txt
new file mode 100644
index 000000000..60b8df533
--- /dev/null
+++ b/v3/js/ace/README.txt
@@ -0,0 +1,4 @@
+This version of Ace was checked out from:
+https://github.com/ajaxorg/ace-builds/
+
+on 2014-07-04
diff --git a/v3/js/ace/src-min-noconflict/ace.js b/v3/js/ace/src-min-noconflict/ace.js
new file mode 100644
index 000000000..97b91b011
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/ace.js
@@ -0,0 +1,11 @@
+(function(){function s(r){var i=function(e,t){return n("",e,t)},s=e;r&&(e[r]||(e[r]={}),s=e[r]);if(!s.define||!s.define.packaged)t.original=s.define,s.define=t,s.define.packaged=!0;if(!s.require||!s.require.packaged)n.original=s.require,s.require=i,s.require.packaged=!0}var ACE_NAMESPACE = "ace",e=function(){return this}();if(!ACE_NAMESPACE&&typeof requirejs!="undefined")return;var t=function(e,n,r){if(typeof e!="string"){t.original?t.original.apply(window,arguments):(console.error("dropping module because define wasn't a string."),console.trace());return}arguments.length==2&&(r=n),t.modules||(t.modules={},t.payloads={}),t.payloads[e]=r,t.modules[e]=null},n=function(e,t,r){if(Object.prototype.toString.call(t)==="[object Array]"){var s=[];for(var o=0,u=t.length;o<u;++o){var a=i(e,t[o]);if(!a&&n.original)return n.original.apply(window,arguments);s.push(a)}r&&r.apply(null,s)}else{if(typeof t=="string"){var f=i(e,t);return!f&&n.original?n.original.apply(window,arguments):(r&&r(),f)}if(n.original)return n.original.apply(window,arguments)}},r=function(e,t){if(t.indexOf("!")!==-1){var n=t.split("!");return r(e,n[0])+"!"+r(e,n[1])}if(t.charAt(0)=="."){var i=e.split("/").slice(0,-1).join("/");t=i+"/"+t;while(t.indexOf(".")!==-1&&s!=t){var s=t;t=t.replace(/\/\.\//,"/").replace(/[^\/]+\/\.\.\//,"")}}return t},i=function(e,i){i=r(e,i);var s=t.modules[i];if(!s){s=t.payloads[i];if(typeof s=="function"){var o={},u={id:i,uri:"",exports:o,packaged:!0},a=function(e,t){return n(i,e,t)},f=s(a,o,u);o=f||u.exports,t.modules[i]=o,delete t.payloads[i]}s=t.modules[i]=o||s}return s};s(ACE_NAMESPACE)})(),ace.define("ace/lib/regexp",["require","exports","module"],function(e,t,n){"use strict";function o(e){return(e.global?"g":"")+(e.ignoreCase?"i":"")+(e.multiline?"m":"")+(e.extended?"x":"")+(e.sticky?"y":"")}function u(e,t,n){if(Array.prototype.indexOf)return e.indexOf(t,n);for(var r=n||0;r<e.length;r++)if(e[r]===t)return r;return-1}var r={exec:RegExp.prototype.exec,test:RegExp.prototype.test,match:String.prototype.match,replace:String.prototype.replace,split:String.prototype.split},i=r.exec.call(/()??/,"")[1]===undefined,s=function(){var e=/^/g;return r.test.call(e,""),!e.lastIndex}();if(s&&i)return;RegExp.prototype.exec=function(e){var t=r.exec.apply(this,arguments),n,a;if(typeof e=="string"&&t){!i&&t.length>1&&u(t,"")>-1&&(a=RegExp(this.source,r.replace.call(o(this),"g","")),r.replace.call(e.slice(t.index),a,function(){for(var e=1;e<arguments.length-2;e++)arguments[e]===undefined&&(t[e]=undefined)}));if(this._xregexp&&this._xregexp.captureNames)for(var f=1;f<t.length;f++)n=this._xregexp.captureNames[f-1],n&&(t[n]=t[f]);!s&&this.global&&!t[0].length&&this.lastIndex>t.index&&this.lastIndex--}return t},s||(RegExp.prototype.test=function(e){var t=r.exec.call(this,e);return t&&this.global&&!t[0].length&&this.lastIndex>t.index&&this.lastIndex--,!!t})}),ace.define("ace/lib/es5-shim",["require","exports","module"],function(e,t,n){function r(){}function w(e){try{return Object.defineProperty(e,"sentinel",{}),"sentinel"in e}catch(t){}}function H(e){return e=+e,e!==e?e=0:e!==0&&e!==1/0&&e!==-1/0&&(e=(e>0||-1)*Math.floor(Math.abs(e))),e}function B(e){var t=typeof e;return e===null||t==="undefined"||t==="boolean"||t==="number"||t==="string"}function j(e){var t,n,r;if(B(e))return e;n=e.valueOf;if(typeof n=="function"){t=n.call(e);if(B(t))return t}r=e.toString;if(typeof r=="function"){t=r.call(e);if(B(t))return t}throw new TypeError}Function.prototype.bind||(Function.prototype.bind=function(t){var n=this;if(typeof n!="function")throw new TypeError("Function.prototype.bind called on incompatible "+n);var i=u.call(arguments,1),s=function(){if(this instanceof s){var e=n.apply(this,i.concat(u.call(arguments)));return Object(e)===e?e:this}return n.apply(t,i.concat(u.call(arguments)))};return n.prototype&&(r.prototype=n.prototype,s.prototype=new r,r.prototype=null),s});var i=Function.prototype.call,s=Array.prototype,o=Object.prototype,u=s.slice,a=i.bind(o.toString),f=i.bind(o.hasOwnProperty),l,c,h,p,d;if(d=f(o,"__defineGetter__"))l=i.bind(o.__defineGetter__),c=i.bind(o.__defineSetter__),h=i.bind(o.__lookupGetter__),p=i.bind(o.__lookupSetter__);if([1,2].splice(0).length!=2)if(!function(){function e(e){var t=new Array(e+2);return t[0]=t[1]=0,t}var t=[],n;t.splice.apply(t,e(20)),t.splice.apply(t,e(26)),n=t.length,t.splice(5,0,"XXX"),n+1==t.length;if(n+1==t.length)return!0}())Array.prototype.splice=function(e,t){var n=this.length;e>0?e>n&&(e=n):e==void 0?e=0:e<0&&(e=Math.max(n+e,0)),e+t<n||(t=n-e);var r=this.slice(e,e+t),i=u.call(arguments,2),s=i.length;if(e===n)s&&this.push.apply(this,i);else{var o=Math.min(t,n-e),a=e+o,f=a+s-o,l=n-a,c=n-o;if(f<a)for(var h=0;h<l;++h)this[f+h]=this[a+h];else if(f>a)for(h=l;h--;)this[f+h]=this[a+h];if(s&&e===c)this.length=c,this.push.apply(this,i);else{this.length=c+s;for(h=0;h<s;++h)this[e+h]=i[h]}}return r};else{var v=Array.prototype.splice;Array.prototype.splice=function(e,t){return arguments.length?v.apply(this,[e===void 0?0:e,t===void 0?this.length-e:t].concat(u.call(arguments,2))):[]}}Array.isArray||(Array.isArray=function(t){return a(t)=="[object Array]"});var m=Object("a"),g=m[0]!="a"||!(0 in m);Array.prototype.forEach||(Array.prototype.forEach=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=arguments[1],s=-1,o=r.length>>>0;if(a(t)!="[object Function]")throw new TypeError;while(++s<o)s in r&&t.call(i,r[s],s,n)}),Array.prototype.map||(Array.prototype.map=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=Array(i),o=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var u=0;u<i;u++)u in r&&(s[u]=t.call(o,r[u],u,n));return s}),Array.prototype.filter||(Array.prototype.filter=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=[],o,u=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var f=0;f<i;f++)f in r&&(o=r[f],t.call(u,o,f,n)&&s.push(o));return s}),Array.prototype.every||(Array.prototype.every=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var o=0;o<i;o++)if(o in r&&!t.call(s,r[o],o,n))return!1;return!0}),Array.prototype.some||(Array.prototype.some=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var o=0;o<i;o++)if(o in r&&t.call(s,r[o],o,n))return!0;return!1}),Array.prototype.reduce||(Array.prototype.reduce=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0;if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");if(!i&&arguments.length==1)throw new TypeError("reduce of empty array with no initial value");var s=0,o;if(arguments.length>=2)o=arguments[1];else do{if(s in r){o=r[s++];break}if(++s>=i)throw new TypeError("reduce of empty array with no initial value")}while(!0);for(;s<i;s++)s in r&&(o=t.call(void 0,o,r[s],s,n));return o}),Array.prototype.reduceRight||(Array.prototype.reduceRight=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0;if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");if(!i&&arguments.length==1)throw new TypeError("reduceRight of empty array with no initial value");var s,o=i-1;if(arguments.length>=2)s=arguments[1];else do{if(o in r){s=r[o--];break}if(--o<0)throw new TypeError("reduceRight of empty array with no initial value")}while(!0);do o in this&&(s=t.call(void 0,s,r[o],o,n));while(o--);return s});if(!Array.prototype.indexOf||[0,1].indexOf(1,2)!=-1)Array.prototype.indexOf=function(t){var n=g&&a(this)=="[object String]"?this.split(""):F(this),r=n.length>>>0;if(!r)return-1;var i=0;arguments.length>1&&(i=H(arguments[1])),i=i>=0?i:Math.max(0,r+i);for(;i<r;i++)if(i in n&&n[i]===t)return i;return-1};if(!Array.prototype.lastIndexOf||[0,1].lastIndexOf(0,-3)!=-1)Array.prototype.lastIndexOf=function(t){var n=g&&a(this)=="[object String]"?this.split(""):F(this),r=n.length>>>0;if(!r)return-1;var i=r-1;arguments.length>1&&(i=Math.min(i,H(arguments[1]))),i=i>=0?i:r-Math.abs(i);for(;i>=0;i--)if(i in n&&t===n[i])return i;return-1};Object.getPrototypeOf||(Object.getPrototypeOf=function(t){return t.__proto__||(t.constructor?t.constructor.prototype:o)});if(!Object.getOwnPropertyDescriptor){var y="Object.getOwnPropertyDescriptor called on a non-object: ";Object.getOwnPropertyDescriptor=function(t,n){if(typeof t!="object"&&typeof t!="function"||t===null)throw new TypeError(y+t);if(!f(t,n))return;var r,i,s;r={enumerable:!0,configurable:!0};if(d){var u=t.__proto__;t.__proto__=o;var i=h(t,n),s=p(t,n);t.__proto__=u;if(i||s)return i&&(r.get=i),s&&(r.set=s),r}return r.value=t[n],r}}Object.getOwnPropertyNames||(Object.getOwnPropertyNames=function(t){return Object.keys(t)});if(!Object.create){var b;Object.prototype.__proto__===null?b=function(){return{__proto__:null}}:b=function(){var e={};for(var t in e)e[t]=null;return e.constructor=e.hasOwnProperty=e.propertyIsEnumerable=e.isPrototypeOf=e.toLocaleString=e.toString=e.valueOf=e.__proto__=null,e},Object.create=function(t,n){var r;if(t===null)r=b();else{if(typeof t!="object")throw new TypeError("typeof prototype["+typeof t+"] != 'object'");var i=function(){};i.prototype=t,r=new i,r.__proto__=t}return n!==void 0&&Object.defineProperties(r,n),r}}if(Object.defineProperty){var E=w({}),S=typeof document=="undefined"||w(document.createElement("div"));if(!E||!S)var x=Object.defineProperty}if(!Object.defineProperty||x){var T="Property description must be an object: ",N="Object.defineProperty called on non-object: ",C="getters & setters can not be defined on this javascript engine";Object.defineProperty=function(t,n,r){if(typeof t!="object"&&typeof t!="function"||t===null)throw new TypeError(N+t);if(typeof r!="object"&&typeof r!="function"||r===null)throw new TypeError(T+r);if(x)try{return x.call(Object,t,n,r)}catch(i){}if(f(r,"value"))if(d&&(h(t,n)||p(t,n))){var s=t.__proto__;t.__proto__=o,delete t[n],t[n]=r.value,t.__proto__=s}else t[n]=r.value;else{if(!d)throw new TypeError(C);f(r,"get")&&l(t,n,r.get),f(r,"set")&&c(t,n,r.set)}return t}}Object.defineProperties||(Object.defineProperties=function(t,n){for(var r in n)f(n,r)&&Object.defineProperty(t,r,n[r]);return t}),Object.seal||(Object.seal=function(t){return t}),Object.freeze||(Object.freeze=function(t){return t});try{Object.freeze(function(){})}catch(k){Object.freeze=function(t){return function(n){return typeof n=="function"?n:t(n)}}(Object.freeze)}Object.preventExtensions||(Object.preventExtensions=function(t){return t}),Object.isSealed||(Object.isSealed=function(t){return!1}),Object.isFrozen||(Object.isFrozen=function(t){return!1}),Object.isExtensible||(Object.isExtensible=function(t){if(Object(t)===t)throw new TypeError;var n="";while(f(t,n))n+="?";t[n]=!0;var r=f(t,n);return delete t[n],r});if(!Object.keys){var L=!0,A=["toString","toLocaleString","valueOf","hasOwnProperty","isPrototypeOf","propertyIsEnumerable","constructor"],O=A.length;for(var M in{toString:null})L=!1;Object.keys=function I(e){if(typeof e!="object"&&typeof e!="function"||e===null)throw new TypeError("Object.keys called on a non-object");var I=[];for(var t in e)f(e,t)&&I.push(t);if(L)for(var n=0,r=O;n<r;n++){var i=A[n];f(e,i)&&I.push(i)}return I}}Date.now||(Date.now=function(){return(new Date).getTime()});var _="	\n\f\r \u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\ufeff";if(!String.prototype.trim||_.trim()){_="["+_+"]";var D=new RegExp("^"+_+_+"*"),P=new RegExp(_+_+"*$");String.prototype.trim=function(){return String(this).replace(D,"").replace(P,"")}}var F=function(e){if(e==null)throw new TypeError("can't convert "+e+" to object");return Object(e)}}),ace.define("ace/lib/fixoldbrowsers",["require","exports","module","ace/lib/regexp","ace/lib/es5-shim"],function(e,t,n){"use strict";e("./regexp"),e("./es5-shim")}),ace.define("ace/lib/dom",["require","exports","module"],function(e,t,n){"use strict";if(typeof document=="undefined")return;var r="http://www.w3.org/1999/xhtml";t.getDocumentHead=function(e){return e||(e=document),e.head||e.getElementsByTagName("head")[0]||e.documentElement},t.createElement=function(e,t){return document.createElementNS?document.createElementNS(t||r,e):document.createElement(e)},t.hasCssClass=function(e,t){var n=e.className.split(/\s+/g);return n.indexOf(t)!==-1},t.addCssClass=function(e,n){t.hasCssClass(e,n)||(e.className+=" "+n)},t.removeCssClass=function(e,t){var n=e.className.split(/\s+/g);for(;;){var r=n.indexOf(t);if(r==-1)break;n.splice(r,1)}e.className=n.join(" ")},t.toggleCssClass=function(e,t){var n=e.className.split(/\s+/g),r=!0;for(;;){var i=n.indexOf(t);if(i==-1)break;r=!1,n.splice(i,1)}return r&&n.push(t),e.className=n.join(" "),r},t.setCssClass=function(e,n,r){r?t.addCssClass(e,n):t.removeCssClass(e,n)},t.hasCssString=function(e,t){var n=0,r;t=t||document;if(t.createStyleSheet&&(r=t.styleSheets)){while(n<r.length)if(r[n++].owningElement.id===e)return!0}else if(r=t.getElementsByTagName("style"))while(n<r.length)if(r[n++].id===e)return!0;return!1},t.importCssString=function(n,i,s){s=s||document;if(i&&t.hasCssString(i,s))return null;var o;s.createStyleSheet?(o=s.createStyleSheet(),o.cssText=n,i&&(o.owningElement.id=i)):(o=s.createElementNS?s.createElementNS(r,"style"):s.createElement("style"),o.appendChild(s.createTextNode(n)),i&&(o.id=i),t.getDocumentHead(s).appendChild(o))},t.importCssStylsheet=function(e,n){if(n.createStyleSheet)n.createStyleSheet(e);else{var r=t.createElement("link");r.rel="stylesheet",r.href=e,t.getDocumentHead(n).appendChild(r)}},t.getInnerWidth=function(e){return parseInt(t.computedStyle(e,"paddingLeft"),10)+parseInt(t.computedStyle(e,"paddingRight"),10)+e.clientWidth},t.getInnerHeight=function(e){return parseInt(t.computedStyle(e,"paddingTop"),10)+parseInt(t.computedStyle(e,"paddingBottom"),10)+e.clientHeight},window.pageYOffset!==undefined?(t.getPageScrollTop=function(){return window.pageYOffset},t.getPageScrollLeft=function(){return window.pageXOffset}):(t.getPageScrollTop=function(){return document.body.scrollTop},t.getPageScrollLeft=function(){return document.body.scrollLeft}),window.getComputedStyle?t.computedStyle=function(e,t){return t?(window.getComputedStyle(e,"")||{})[t]||"":window.getComputedStyle(e,"")||{}}:t.computedStyle=function(e,t){return t?e.currentStyle[t]:e.currentStyle},t.scrollbarWidth=function(e){var n=t.createElement("ace_inner");n.style.width="100%",n.style.minWidth="0px",n.style.height="200px",n.style.display="block";var r=t.createElement("ace_outer"),i=r.style;i.position="absolute",i.left="-10000px",i.overflow="hidden",i.width="200px",i.minWidth="0px",i.height="150px",i.display="block",r.appendChild(n);var s=e.documentElement;s.appendChild(r);var o=n.offsetWidth;i.overflow="scroll";var u=n.offsetWidth;return o==u&&(u=r.clientWidth),s.removeChild(r),o-u},t.setInnerHtml=function(e,t){var n=e.cloneNode(!1);return n.innerHTML=t,e.parentNode.replaceChild(n,e),n},"textContent"in document.documentElement?(t.setInnerText=function(e,t){e.textContent=t},t.getInnerText=function(e){return e.textContent}):(t.setInnerText=function(e,t){e.innerText=t},t.getInnerText=function(e){return e.innerText}),t.getParentWindow=function(e){return e.defaultView||e.parentWindow}}),ace.define("ace/lib/oop",["require","exports","module"],function(e,t,n){"use strict";t.inherits=function(e,t){e.super_=t,e.prototype=Object.create(t.prototype,{constructor:{value:e,enumerable:!1,writable:!0,configurable:!0}})},t.mixin=function(e,t){for(var n in t)e[n]=t[n];return e},t.implement=function(e,n){t.mixin(e,n)}}),ace.define("ace/lib/keys",["require","exports","module","ace/lib/oop"],function(e,t,n){"use strict";var r=e("./oop"),i=function(){var e={MODIFIER_KEYS:{16:"Shift",17:"Ctrl",18:"Alt",224:"Meta"},KEY_MODS:{ctrl:1,alt:2,option:2,shift:4,"super":8,meta:8,command:8,cmd:8},FUNCTION_KEYS:{8:"Backspace",9:"Tab",13:"Return",19:"Pause",27:"Esc",32:"Space",33:"PageUp",34:"PageDown",35:"End",36:"Home",37:"Left",38:"Up",39:"Right",40:"Down",44:"Print",45:"Insert",46:"Delete",96:"Numpad0",97:"Numpad1",98:"Numpad2",99:"Numpad3",100:"Numpad4",101:"Numpad5",102:"Numpad6",103:"Numpad7",104:"Numpad8",105:"Numpad9","-13":"NumpadEnter",112:"F1",113:"F2",114:"F3",115:"F4",116:"F5",117:"F6",118:"F7",119:"F8",120:"F9",121:"F10",122:"F11",123:"F12",144:"Numlock",145:"Scrolllock"},PRINTABLE_KEYS:{32:" ",48:"0",49:"1",50:"2",51:"3",52:"4",53:"5",54:"6",55:"7",56:"8",57:"9",59:";",61:"=",65:"a",66:"b",67:"c",68:"d",69:"e",70:"f",71:"g",72:"h",73:"i",74:"j",75:"k",76:"l",77:"m",78:"n",79:"o",80:"p",81:"q",82:"r",83:"s",84:"t",85:"u",86:"v",87:"w",88:"x",89:"y",90:"z",107:"+",109:"-",110:".",187:"=",188:",",189:"-",190:".",191:"/",192:"`",219:"[",220:"\\",221:"]",222:"'"}},t,n;for(n in e.FUNCTION_KEYS)t=e.FUNCTION_KEYS[n].toLowerCase(),e[t]=parseInt(n,10);for(n in e.PRINTABLE_KEYS)t=e.PRINTABLE_KEYS[n].toLowerCase(),e[t]=parseInt(n,10);return r.mixin(e,e.MODIFIER_KEYS),r.mixin(e,e.PRINTABLE_KEYS),r.mixin(e,e.FUNCTION_KEYS),e.enter=e["return"],e.escape=e.esc,e.del=e["delete"],e[173]="-",function(){var t=["cmd","ctrl","alt","shift"];for(var n=Math.pow(2,t.length);n--;)e.KEY_MODS[n]=t.filter(function(t){return n&e.KEY_MODS[t]}).join("-")+"-"}(),e}();r.mixin(t,i),t.keyCodeToString=function(e){var t=i[e];return typeof t!="string"&&(t=String.fromCharCode(e)),t.toLowerCase()}}),ace.define("ace/lib/useragent",["require","exports","module"],function(e,t,n){"use strict";t.OS={LINUX:"LINUX",MAC:"MAC",WINDOWS:"WINDOWS"},t.getOS=function(){return t.isMac?t.OS.MAC:t.isLinux?t.OS.LINUX:t.OS.WINDOWS};if(typeof navigator!="object")return;var r=(navigator.platform.match(/mac|win|linux/i)||["other"])[0].toLowerCase(),i=navigator.userAgent;t.isWin=r=="win",t.isMac=r=="mac",t.isLinux=r=="linux",t.isIE=navigator.appName=="Microsoft Internet Explorer"||navigator.appName.indexOf("MSAppHost")>=0?parseFloat((i.match(/(?:MSIE |Trident\/[0-9]+[\.0-9]+;.*rv:)([0-9]+[\.0-9]+)/)||[])[1]):parseFloat((i.match(/(?:Trident\/[0-9]+[\.0-9]+;.*rv:)([0-9]+[\.0-9]+)/)||[])[1]),t.isOldIE=t.isIE&&t.isIE<9,t.isGecko=t.isMozilla=(window.Controllers||window.controllers)&&window.navigator.product==="Gecko",t.isOldGecko=t.isGecko&&parseInt((i.match(/rv\:(\d+)/)||[])[1],10)<4,t.isOpera=window.opera&&Object.prototype.toString.call(window.opera)=="[object Opera]",t.isWebKit=parseFloat(i.split("WebKit/")[1])||undefined,t.isChrome=parseFloat(i.split(" Chrome/")[1])||undefined,t.isAIR=i.indexOf("AdobeAIR")>=0,t.isIPad=i.indexOf("iPad")>=0,t.isTouchPad=i.indexOf("TouchPad")>=0,t.isChromeOS=i.indexOf(" CrOS ")>=0}),ace.define("ace/lib/event",["require","exports","module","ace/lib/keys","ace/lib/useragent"],function(e,t,n){"use strict";function o(e,t,n){var o=s(t);if(!i.isMac&&u){if(u[91]||u[92])o|=8;if(u.altGr){if((3&o)==3)return;u.altGr=0}if(n===18||n===17){var f=t.location||t.keyLocation;if(n===17&&f===1)a=t.timeStamp;else if(n===18&&o===3&&f===2){var l=-a;a=t.timeStamp,l+=a,l<3&&(u.altGr=!0)}}}if(n in r.MODIFIER_KEYS){switch(r.MODIFIER_KEYS[n]){case"Alt":o=2;break;case"Shift":o=4;break;case"Ctrl":o=1;break;default:o=8}n=-1}o&8&&(n===91||n===93)&&(n=-1);if(!o&&n===13)if(t.location||t.keyLocation===3){e(t,o,-n);if(t.defaultPrevented)return}if(i.isChromeOS&&o&8){e(t,o,n);if(t.defaultPrevented)return;o&=-9}return!!o||n in r.FUNCTION_KEYS||n in r.PRINTABLE_KEYS?e(t,o,n):!1}var r=e("./keys"),i=e("./useragent");t.addListener=function(e,t,n){if(e.addEventListener)return e.addEventListener(t,n,!1);if(e.attachEvent){var r=function(){n.call(e,window.event)};n._wrapper=r,e.attachEvent("on"+t,r)}},t.removeListener=function(e,t,n){if(e.removeEventListener)return e.removeEventListener(t,n,!1);e.detachEvent&&e.detachEvent("on"+t,n._wrapper||n)},t.stopEvent=function(e){return t.stopPropagation(e),t.preventDefault(e),!1},t.stopPropagation=function(e){e.stopPropagation?e.stopPropagation():e.cancelBubble=!0},t.preventDefault=function(e){e.preventDefault?e.preventDefault():e.returnValue=!1},t.getButton=function(e){return e.type=="dblclick"?0:e.type=="contextmenu"||i.isMac&&e.ctrlKey&&!e.altKey&&!e.shiftKey?2:e.preventDefault?e.button:{1:0,2:2,4:1}[e.button]},t.capture=function(e,n,r){function i(e){n&&n(e),r&&r(e),t.removeListener(document,"mousemove",n,!0),t.removeListener(document,"mouseup",i,!0),t.removeListener(document,"dragstart",i,!0)}return t.addListener(document,"mousemove",n,!0),t.addListener(document,"mouseup",i,!0),t.addListener(document,"dragstart",i,!0),i},t.addMouseWheelListener=function(e,n){"onmousewheel"in e?t.addListener(e,"mousewheel",function(e){var t=8;e.wheelDeltaX!==undefined?(e.wheelX=-e.wheelDeltaX/t,e.wheelY=-e.wheelDeltaY/t):(e.wheelX=0,e.wheelY=-e.wheelDelta/t),n(e)}):"onwheel"in e?t.addListener(e,"wheel",function(e){var t=.35;switch(e.deltaMode){case e.DOM_DELTA_PIXEL:e.wheelX=e.deltaX*t||0,e.wheelY=e.deltaY*t||0;break;case e.DOM_DELTA_LINE:case e.DOM_DELTA_PAGE:e.wheelX=(e.deltaX||0)*5,e.wheelY=(e.deltaY||0)*5}n(e)}):t.addListener(e,"DOMMouseScroll",function(e){e.axis&&e.axis==e.HORIZONTAL_AXIS?(e.wheelX=(e.detail||0)*5,e.wheelY=0):(e.wheelX=0,e.wheelY=(e.detail||0)*5),n(e)})},t.addMultiMouseDownListener=function(e,n,r,s){var o=0,u,a,f,l={2:"dblclick",3:"tripleclick",4:"quadclick"};t.addListener(e,"mousedown",function(e){t.getButton(e)!==0?o=0:e.detail>1?(o++,o>4&&(o=1)):o=1;if(i.isIE){var c=Math.abs(e.clientX-u)>5||Math.abs(e.clientY-a)>5;if(!f||c)o=1;f&&clearTimeout(f),f=setTimeout(function(){f=null},n[o-1]||600),o==1&&(u=e.clientX,a=e.clientY)}r[s]("mousedown",e);if(o>4)o=0;else if(o>1)return r[s](l[o],e)}),i.isOldIE&&t.addListener(e,"dblclick",function(e){o=2,f&&clearTimeout(f),f=setTimeout(function(){f=null},n[o-1]||600),r[s]("mousedown",e),r[s](l[o],e)})};var s=!i.isMac||!i.isOpera||"KeyboardEvent"in window?function(e){return 0|(e.ctrlKey?1:0)|(e.altKey?2:0)|(e.shiftKey?4:0)|(e.metaKey?8:0)}:function(e){return 0|(e.metaKey?1:0)|(e.altKey?2:0)|(e.shiftKey?4:0)|(e.ctrlKey?8:0)};t.getModifierString=function(e){return r.KEY_MODS[s(e)]};var u=null,a=0;t.addCommandKeyListener=function(e,n){var r=t.addListener;if(i.isOldGecko||i.isOpera&&!("KeyboardEvent"in window)){var s=null;r(e,"keydown",function(e){s=e.keyCode}),r(e,"keypress",function(e){return o(n,e,s)})}else{var a=null;r(e,"keydown",function(e){u[e.keyCode]=!0;var t=o(n,e,e.keyCode);return a=e.defaultPrevented,t}),r(e,"keypress",function(e){a&&(e.ctrlKey||e.altKey||e.shiftKey||e.metaKey)&&(t.stopEvent(e),a=null)}),r(e,"keyup",function(e){u[e.keyCode]=null}),u||(u=Object.create(null),r(window,"focus",function(e){u=Object.create(null)}))}};if(window.postMessage&&!i.isOldIE){var f=1;t.nextTick=function(e,n){n=n||window;var r="zero-timeout-message-"+f;t.addListener(n,"message",function i(s){s.data==r&&(t.stopPropagation(s),t.removeListener(n,"message",i),e())}),n.postMessage(r,"*")}}t.nextFrame=window.requestAnimationFrame||window.mozRequestAnimationFrame||window.webkitRequestAnimationFrame||window.msRequestAnimationFrame||window.oRequestAnimationFrame,t.nextFrame?t.nextFrame=t.nextFrame.bind(window):t.nextFrame=function(e){setTimeout(e,17)}}),ace.define("ace/lib/lang",["require","exports","module"],function(e,t,n){"use strict";t.last=function(e){return e[e.length-1]},t.stringReverse=function(e){return e.split("").reverse().join("")},t.stringRepeat=function(e,t){var n="";while(t>0){t&1&&(n+=e);if(t>>=1)e+=e}return n};var r=/^\s\s*/,i=/\s\s*$/;t.stringTrimLeft=function(e){return e.replace(r,"")},t.stringTrimRight=function(e){return e.replace(i,"")},t.copyObject=function(e){var t={};for(var n in e)t[n]=e[n];return t},t.copyArray=function(e){var t=[];for(var n=0,r=e.length;n<r;n++)e[n]&&typeof e[n]=="object"?t[n]=this.copyObject(e[n]):t[n]=e[n];return t},t.deepCopy=function(e){if(typeof e!="object"||!e)return e;var n=e.constructor;if(n===RegExp)return e;var r=n();for(var i in e)typeof e[i]=="object"?r[i]=t.deepCopy(e[i]):r[i]=e[i];return r},t.arrayToMap=function(e){var t={};for(var n=0;n<e.length;n++)t[e[n]]=1;return t},t.createMap=function(e){var t=Object.create(null);for(var n in e)t[n]=e[n];return t},t.arrayRemove=function(e,t){for(var n=0;n<=e.length;n++)t===e[n]&&e.splice(n,1)},t.escapeRegExp=function(e){return e.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")},t.escapeHTML=function(e){return e.replace(/&/g,"&#38;").replace(/"/g,"&#34;").replace(/'/g,"&#39;").replace(/</g,"&#60;")},t.getMatchOffsets=function(e,t){var n=[];return e.replace(t,function(e){n.push({offset:arguments[arguments.length-2],length:e.length})}),n},t.deferredCall=function(e){var t=null,n=function(){t=null,e()},r=function(e){return r.cancel(),t=setTimeout(n,e||0),r};return r.schedule=r,r.call=function(){return this.cancel(),e(),r},r.cancel=function(){return clearTimeout(t),t=null,r},r.isPending=function(){return t},r},t.delayedCall=function(e,t){var n=null,r=function(){n=null,e()},i=function(e){n==null&&(n=setTimeout(r,e||t))};return i.delay=function(e){n&&clearTimeout(n),n=setTimeout(r,e||t)},i.schedule=i,i.call=function(){this.cancel(),e()},i.cancel=function(){n&&clearTimeout(n),n=null},i.isPending=function(){return n},i}}),ace.define("ace/keyboard/textinput",["require","exports","module","ace/lib/event","ace/lib/useragent","ace/lib/dom","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../lib/event"),i=e("../lib/useragent"),s=e("../lib/dom"),o=e("../lib/lang"),u=i.isChrome<18,a=i.isIE,f=function(e,t){function b(e){if(h)return;if(k)t=0,r=e?0:n.value.length-1;else var t=e?2:1,r=2;try{n.setSelectionRange(t,r)}catch(i){}}function w(){if(h)return;n.value=f,i.isWebKit&&y.schedule()}function q(){setTimeout(function(){p&&(n.style.cssText=p,p=""),t.renderer.$keepTextAreaAtCursor==null&&(t.renderer.$keepTextAreaAtCursor=!0,t.renderer.$moveTextAreaToCursor())},0)}var n=s.createElement("textarea");n.className="ace_text-input",i.isTouchPad&&n.setAttribute("x-palm-disable-auto-cap",!0),n.wrap="off",n.autocorrect="off",n.autocapitalize="off",n.spellcheck=!1,n.style.opacity="0",e.insertBefore(n,e.firstChild);var f="

",l=!1,c=!1,h=!1,p="",d=!0;try{var v=document.activeElement===n}catch(m){}r.addListener(n,"blur",function(){t.onBlur(),v=!1}),r.addListener(n,"focus",function(){v=!0,t.onFocus(),b()}),this.focus=function(){n.focus()},this.blur=function(){n.blur()},this.isFocused=function(){return v};var g=o.delayedCall(function(){v&&b(d)}),y=o.delayedCall(function(){h||(n.value=f,v&&b())});i.isWebKit||t.addEventListener("changeSelection",function(){t.selection.isEmpty()!=d&&(d=!d,g.schedule())}),w(),v&&t.onFocus();var E=function(e){return e.selectionStart===0&&e.selectionEnd===e.value.length};!n.setSelectionRange&&n.createTextRange&&(n.setSelectionRange=function(e,t){var n=this.createTextRange();n.collapse(!0),n.moveStart("character",e),n.moveEnd("character",t),n.select()},E=function(e){try{var t=e.ownerDocument.selection.createRange()}catch(n){}return!t||t.parentElement()!=e?!1:t.text==e.value});if(i.isOldIE){var S=!1,x=function(e){if(S)return;var t=n.value;if(h||!t||t==f)return;if(e&&t==f[0])return T.schedule();A(t),S=!0,w(),S=!1},T=o.delayedCall(x);r.addListener(n,"propertychange",x);var N={13:1,27:1};r.addListener(n,"keyup",function(e){h&&(!n.value||N[e.keyCode])&&setTimeout(F,0);if((n.value.charCodeAt(0)||0)<129)return T.call();h?j():B()}),r.addListener(n,"keydown",function(e){T.schedule(50)})}var C=function(e){l?l=!1:E(n)?(t.selectAll(),b()):k&&b(t.selection.isEmpty())},k=null;this.setInputHandler=function(e){k=e},this.getInputHandler=function(){return k};var L=!1,A=function(e){k&&(e=k(e),k=null),c?(b(),e&&t.onPaste(e),c=!1):e==f.charAt(0)?L?t.execCommand("del",{source:"ace"}):t.execCommand("backspace",{source:"ace"}):(e.substring(0,2)==f?e=e.substr(2):e.charAt(0)==f.charAt(0)?e=e.substr(1):e.charAt(e.length-1)==f.charAt(0)&&(e=e.slice(0,-1)),e.charAt(e.length-1)==f.charAt(0)&&(e=e.slice(0,-1)),e&&t.onTextInput(e)),L&&(L=!1)},O=function(e){if(h)return;var t=n.value;A(t),w()},M=function(e,t){var n=e.clipboardData||window.clipboardData;if(!n||u)return;var r=a?"Text":"text/plain";return t?n.setData(r,t)!==!1:n.getData(r)},_=function(e,i){var s=t.getCopyText();if(!s)return r.preventDefault(e);M(e,s)?(i?t.onCut():t.onCopy(),r.preventDefault(e)):(l=!0,n.value=s,n.select(),setTimeout(function(){l=!1,w(),b(),i?t.onCut():t.onCopy()}))},D=function(e){_(e,!0)},P=function(e){_(e,!1)},H=function(e){var s=M(e);typeof s=="string"?(s&&t.onPaste(s),i.isIE&&setTimeout(b),r.preventDefault(e)):(n.value="",c=!0)};r.addCommandKeyListener(n,t.onCommandKey.bind(t)),r.addListener(n,"select",C),r.addListener(n,"input",O),r.addListener(n,"cut",D),r.addListener(n,"copy",P),r.addListener(n,"paste",H),(!("oncut"in n)||!("oncopy"in n)||!("onpaste"in n))&&r.addListener(e,"keydown",function(e){if(i.isMac&&!e.metaKey||!e.ctrlKey)return;switch(e.keyCode){case 67:P(e);break;case 86:H(e);break;case 88:D(e)}});var B=function(e){if(h||!t.onCompositionStart)return;h={},t.onCompositionStart(),setTimeout(j,0),t.on("mousedown",F),t.selection.isEmpty()||(t.insert(""),t.session.markUndoGroup(),t.selection.clearSelection()),t.session.markUndoGroup()},j=function(){if(!h||!t.onCompositionUpdate)return;var e=n.value.replace(/\x01/g,"");if(h.lastValue===e)return;t.onCompositionUpdate(e),h.lastValue&&t.undo(),h.lastValue=e;if(h.lastValue){var r=t.selection.getRange();t.insert(h.lastValue),t.session.markUndoGroup(),h.range=t.selection.getRange(),t.selection.setRange(r),t.selection.clearSelection()}},F=function(e){if(!t.onCompositionEnd)return;var r=h;h=!1;var i=setTimeout(function(){i=null;var e=n.value.replace(/\x01/g,"");if(h)return;e==r.lastValue?w():!r.lastValue&&e&&(w(),A(e))});k=function(n){return i&&clearTimeout(i),n=n.replace(/\x01/g,""),n==r.lastValue?"":(r.lastValue&&i&&t.undo(),n)},t.onCompositionEnd(),t.removeListener("mousedown",F),e.type=="compositionend"&&r.range&&t.selection.setRange(r.range)},I=o.delayedCall(j,50);r.addListener(n,"compositionstart",B),i.isGecko?r.addListener(n,"text",function(){I.schedule()}):(r.addListener(n,"keyup",function(){I.schedule()}),r.addListener(n,"keydown",function(){I.schedule()})),r.addListener(n,"compositionend",F),this.getElement=function(){return n},this.setReadOnly=function(e){n.readOnly=e},this.onContextMenu=function(e){L=!0,p||(p=n.style.cssText),n.style.cssText="z-index:100000;"+(i.isIE?"opacity:0.1;":""),b(t.selection.isEmpty()),t._emit("nativecontextmenu",{target:t,domEvent:e});var o=t.container.getBoundingClientRect(),u=s.computedStyle(t.container),a=o.top+(parseInt(u.borderTopWidth)||0),f=o.left+(parseInt(o.borderLeftWidth)||0),l=o.bottom-a-n.clientHeight,c=function(e){n.style.left=e.clientX-f-2+"px",n.style.top=Math.min(e.clientY-a-2,l)+"px"};c(e);if(e.type!="mousedown")return;t.renderer.$keepTextAreaAtCursor&&(t.renderer.$keepTextAreaAtCursor=null),i.isWin&&r.capture(t.container,c,q)},this.onContextMenuClose=q;if(!i.isGecko||i.isMac){var R=function(e){t.textInput.onContextMenu(e),q()};r.addListener(t.renderer.scroller,"contextmenu",R),r.addListener(n,"contextmenu",R)}};t.TextInput=f}),ace.define("ace/mouse/default_handlers",["require","exports","module","ace/lib/dom","ace/lib/event","ace/lib/useragent"],function(e,t,n){"use strict";function u(e){e.$clickSelection=null;var t=e.editor;t.setDefaultHandler("mousedown",this.onMouseDown.bind(e)),t.setDefaultHandler("dblclick",this.onDoubleClick.bind(e)),t.setDefaultHandler("tripleclick",this.onTripleClick.bind(e)),t.setDefaultHandler("quadclick",this.onQuadClick.bind(e)),t.setDefaultHandler("mousewheel",this.onMouseWheel.bind(e));var n=["select","startSelect","selectEnd","selectAllEnd","selectByWordsEnd","selectByLinesEnd","dragWait","dragWaitEnd","focusWait"];n.forEach(function(t){e[t]=this[t]},this),e.selectByLines=this.extendSelectionBy.bind(e,"getLineRange"),e.selectByWords=this.extendSelectionBy.bind(e,"getWordRange")}function a(e,t,n,r){return Math.sqrt(Math.pow(n-e,2)+Math.pow(r-t,2))}function f(e,t){if(e.start.row==e.end.row)var n=2*t.column-e.start.column-e.end.column;else if(e.start.row==e.end.row-1&&!e.start.column&&!e.end.column)var n=t.column-4;else var n=2*t.row-e.start.row-e.end.row;return n<0?{cursor:e.start,anchor:e.end}:{cursor:e.end,anchor:e.start}}var r=e("../lib/dom"),i=e("../lib/event"),s=e("../lib/useragent"),o=0;(function(){this.onMouseDown=function(e){var t=e.inSelection(),n=e.getDocumentPosition();this.mousedownEvent=e;var r=this.editor,i=e.getButton();if(i!==0){var s=r.getSelectionRange(),o=s.isEmpty();o&&r.selection.moveToPosition(n),r.textInput.onContextMenu(e.domEvent);return}if(t&&!r.isFocused()){r.focus();if(this.$focusTimout&&!this.$clickSelection&&!r.inMultiSelectMode){this.mousedownEvent.time=Date.now(),this.setState("focusWait"),this.captureMouse(e);return}}return this.captureMouse(e),!t||this.$clickSelection||e.getShiftKey()||r.inMultiSelectMode?this.startSelect(n):t&&(this.mousedownEvent.time=Date.now(),this.startSelect(n)),e.preventDefault()},this.startSelect=function(e){e=e||this.editor.renderer.screenToTextCoordinates(this.x,this.y);var t=this.editor,n=this.mousedownEvent.getShiftKey();setTimeout(function(){n?t.selection.selectToPosition(e):this.$clickSelection||t.selection.moveToPosition(e),this.select()}.bind(this),0),t.renderer.scroller.setCapture&&t.renderer.scroller.setCapture(),t.setStyle("ace_selecting"),this.setState("select")},this.select=function(){var e,t=this.editor,n=t.renderer.screenToTextCoordinates(this.x,this.y);if(this.$clickSelection){var r=this.$clickSelection.comparePoint(n);if(r==-1)e=this.$clickSelection.end;else if(r==1)e=this.$clickSelection.start;else{var i=f(this.$clickSelection,n);n=i.cursor,e=i.anchor}t.selection.setSelectionAnchor(e.row,e.column)}t.selection.selectToPosition(n),t.renderer.scrollCursorIntoView()},this.extendSelectionBy=function(e){var t,n=this.editor,r=n.renderer.screenToTextCoordinates(this.x,this.y),i=n.selection[e](r.row,r.column);if(this.$clickSelection){var s=this.$clickSelection.comparePoint(i.start),o=this.$clickSelection.comparePoint(i.end);if(s==-1&&o<=0){t=this.$clickSelection.end;if(i.end.row!=r.row||i.end.column!=r.column)r=i.start}else if(o==1&&s>=0){t=this.$clickSelection.start;if(i.start.row!=r.row||i.start.column!=r.column)r=i.end}else if(s==-1&&o==1)r=i.end,t=i.start;else{var u=f(this.$clickSelection,r);r=u.cursor,t=u.anchor}n.selection.setSelectionAnchor(t.row,t.column)}n.selection.selectToPosition(r),n.renderer.scrollCursorIntoView()},this.selectEnd=this.selectAllEnd=this.selectByWordsEnd=this.selectByLinesEnd=function(){this.$clickSelection=null,this.editor.unsetStyle("ace_selecting"),this.editor.renderer.scroller.releaseCapture&&this.editor.renderer.scroller.releaseCapture()},this.focusWait=function(){var e=a(this.mousedownEvent.x,this.mousedownEvent.y,this.x,this.y),t=Date.now();(e>o||t-this.mousedownEvent.time>this.$focusTimout)&&this.startSelect(this.mousedownEvent.getDocumentPosition())},this.onDoubleClick=function(e){var t=e.getDocumentPosition(),n=this.editor,r=n.session,i=r.getBracketRange(t);i?(i.isEmpty()&&(i.start.column--,i.end.column++),this.setState("select")):(i=n.selection.getWordRange(t.row,t.column),this.setState("selectByWords")),this.$clickSelection=i},this.onTripleClick=function(e){var t=e.getDocumentPosition(),n=this.editor;this.setState("selectByLines");var r=n.getSelectionRange();r.isMultiLine()&&r.contains(t.row,t.column)?(this.$clickSelection=n.selection.getLineRange(r.start.row),this.$clickSelection.end=n.selection.getLineRange(r.end.row).end):this.$clickSelection=n.selection.getLineRange(t.row)},this.onQuadClick=function(e){var t=this.editor;t.selectAll(),this.$clickSelection=t.getSelectionRange(),this.setState("selectAll")},this.onMouseWheel=function(e){if(e.getAccelKey())return;e.getShiftKey()&&e.wheelY&&!e.wheelX&&(e.wheelX=e.wheelY,e.wheelY=0);var t=e.domEvent.timeStamp,n=t-(this.$lastScrollTime||0),r=this.editor,i=r.renderer.isScrollableBy(e.wheelX*e.speed,e.wheelY*e.speed);if(i||n<200)return this.$lastScrollTime=t,r.renderer.scrollBy(e.wheelX*e.speed,e.wheelY*e.speed),e.stop()}}).call(u.prototype),t.DefaultHandlers=u}),ace.define("ace/tooltip",["require","exports","module","ace/lib/oop","ace/lib/dom"],function(e,t,n){"use strict";function s(e){this.isOpen=!1,this.$element=null,this.$parentNode=e}var r=e("./lib/oop"),i=e("./lib/dom");(function(){this.$init=function(){return this.$element=i.createElement("div"),this.$element.className="ace_tooltip",this.$element.style.display="none",this.$parentNode.appendChild(this.$element),this.$element},this.getElement=function(){return this.$element||this.$init()},this.setText=function(e){i.setInnerText(this.getElement(),e)},this.setHtml=function(e){this.getElement().innerHTML=e},this.setPosition=function(e,t){this.getElement().style.left=e+"px",this.getElement().style.top=t+"px"},this.setClassName=function(e){i.addCssClass(this.getElement(),e)},this.show=function(e,t,n){e!=null&&this.setText(e),t!=null&&n!=null&&this.setPosition(t,n),this.isOpen||(this.getElement().style.display="block",this.isOpen=!0)},this.hide=function(){this.isOpen&&(this.getElement().style.display="none",this.isOpen=!1)},this.getHeight=function(){return this.getElement().offsetHeight},this.getWidth=function(){return this.getElement().offsetWidth}}).call(s.prototype),t.Tooltip=s}),ace.define("ace/mouse/default_gutter_handler",["require","exports","module","ace/lib/dom","ace/lib/oop","ace/lib/event","ace/tooltip"],function(e,t,n){"use strict";function u(e){function l(){var r=u.getDocumentPosition().row,s=n.$annotations[r];if(!s)return c();var o=t.session.getLength();if(r==o){var a=t.renderer.pixelToScreenCoordinates(0,u.y).row,l=u.$pos;if(a>t.session.documentToScreenRow(l.row,l.column))return c()}if(f==s)return;f=s.text.join("<br/>"),i.setHtml(f),i.show(),t.on("mousewheel",c);if(e.$tooltipFollowsMouse)h(u);else{var p=n.$cells[t.session.documentToScreenRow(r,0)].element,d=p.getBoundingClientRect(),v=i.getElement().style;v.left=d.right+"px",v.top=d.bottom+"px"}}function c(){o&&(o=clearTimeout(o)),f&&(i.hide(),f=null,t.removeEventListener("mousewheel",c))}function h(e){i.setPosition(e.x,e.y)}var t=e.editor,n=t.renderer.$gutterLayer,i=new a(t.container);e.editor.setDefaultHandler("guttermousedown",function(r){if(!t.isFocused()||r.getButton()!=0)return;var i=n.getRegion(r);if(i=="foldWidgets")return;var s=r.getDocumentPosition().row,o=t.session.selection;if(r.getShiftKey())o.selectTo(s,0);else{if(r.domEvent.detail==2)return t.selectAll(),r.preventDefault();e.$clickSelection=t.selection.getLineRange(s)}return e.setState("selectByLines"),e.captureMouse(r),r.preventDefault()});var o,u,f;e.editor.setDefaultHandler("guttermousemove",function(t){var n=t.domEvent.target||t.domEvent.srcElement;if(r.hasCssClass(n,"ace_fold-widget"))return c();f&&e.$tooltipFollowsMouse&&h(t),u=t;if(o)return;o=setTimeout(function(){o=null,u&&!e.isMousePressed?l():c()},50)}),s.addListener(t.renderer.$gutter,"mouseout",function(e){u=null;if(!f||o)return;o=setTimeout(function(){o=null,c()},50)}),t.on("changeSession",c)}function a(e){o.call(this,e)}var r=e("../lib/dom"),i=e("../lib/oop"),s=e("../lib/event"),o=e("../tooltip").Tooltip;i.inherits(a,o),function(){this.setPosition=function(e,t){var n=window.innerWidth||document.documentElement.clientWidth,r=window.innerHeight||document.documentElement.clientHeight,i=this.getWidth(),s=this.getHeight();e+=15,t+=15,e+i>n&&(e-=e+i-n),t+s>r&&(t-=20+s),o.prototype.setPosition.call(this,e,t)}}.call(a.prototype),t.GutterHandler=u}),ace.define("ace/mouse/mouse_event",["require","exports","module","ace/lib/event","ace/lib/useragent"],function(e,t,n){"use strict";var r=e("../lib/event"),i=e("../lib/useragent"),s=t.MouseEvent=function(e,t){this.domEvent=e,this.editor=t,this.x=this.clientX=e.clientX,this.y=this.clientY=e.clientY,this.$pos=null,this.$inSelection=null,this.propagationStopped=!1,this.defaultPrevented=!1};(function(){this.stopPropagation=function(){r.stopPropagation(this.domEvent),this.propagationStopped=!0},this.preventDefault=function(){r.preventDefault(this.domEvent),this.defaultPrevented=!0},this.stop=function(){this.stopPropagation(),this.preventDefault()},this.getDocumentPosition=function(){return this.$pos?this.$pos:(this.$pos=this.editor.renderer.screenToTextCoordinates(this.clientX,this.clientY),this.$pos)},this.inSelection=function(){if(this.$inSelection!==null)return this.$inSelection;var e=this.editor,t=e.getSelectionRange();if(t.isEmpty())this.$inSelection=!1;else{var n=this.getDocumentPosition();this.$inSelection=t.contains(n.row,n.column)}return this.$inSelection},this.getButton=function(){return r.getButton(this.domEvent)},this.getShiftKey=function(){return this.domEvent.shiftKey},this.getAccelKey=i.isMac?function(){return this.domEvent.metaKey}:function(){return this.domEvent.ctrlKey}}).call(s.prototype)}),ace.define("ace/mouse/dragdrop_handler",["require","exports","module","ace/lib/dom","ace/lib/event","ace/lib/useragent"],function(e,t,n){"use strict";function f(e){function T(e,n){var r=Date.now(),i=!n||e.row!=n.row,s=!n||e.column!=n.column;if(!S||i||s)t.$blockScrolling+=1,t.moveCursorToPosition(e),t.$blockScrolling-=1,S=r,x={x:p,y:d};else{var o=l(x.x,x.y,p,d);o>a?S=null:r-S>=u&&(t.renderer.scrollCursorIntoView(),S=null)}}function N(e,n){var r=Date.now(),i=t.renderer.layerConfig.lineHeight,s=t.renderer.layerConfig.characterWidth,u=t.renderer.scroller.getBoundingClientRect(),a={x:{left:p-u.left,right:u.right-p},y:{top:d-u.top,bottom:u.bottom-d}},f=Math.min(a.x.left,a.x.right),l=Math.min(a.y.top,a.y.bottom),c={row:e.row,column:e.column};f/s<=2&&(c.column+=a.x.left<a.x.right?-3:2),l/i<=1&&(c.row+=a.y.top<a.y.bottom?-1:1);var h=e.row!=c.row,v=e.column!=c.column,m=!n||e.row!=n.row;h||v&&!m?E?r-E>=o&&t.renderer.scrollCursorIntoView(c):E=r:E=null}function C(){var e=g;g=t.renderer.screenToTextCoordinates(p,d),T(g,e),N(g,e)}function k(){m=t.selection.toOrientedRange(),h=t.session.addMarker(m,"ace_selection",t.getSelectionStyle()),t.clearSelection(),t.isFocused()&&t.renderer.$cursorLayer.setBlinking(!1),clearInterval(v),v=setInterval(C,20),y=0,i.addListener(document,"mousemove",O)}function L(){clearInterval(v),t.session.removeMarker(h),h=null,t.$blockScrolling+=1,t.selection.fromOrientedRange(m),t.$blockScrolling-=1,t.isFocused()&&!w&&t.renderer.$cursorLayer.setBlinking(!t.getReadOnly()),m=null,y=0,E=null,S=null,i.removeListener(document,"mousemove",O)}function O(){A==null&&(A=setTimeout(function(){A!=null&&h&&L()},20))}function M(e){var t=e.types;return!t||Array.prototype.some.call(t,function(e){return e=="text/plain"||e=="Text"})}function _(e){var t=["copy","copymove","all","uninitialized"],n=["move","copymove","linkmove","all","uninitialized"],r=s.isMac?e.altKey:e.ctrlKey,i="uninitialized";try{i=e.dataTransfer.effectAllowed.toLowerCase()}catch(e){}var o="none";return r&&t.indexOf(i)>=0?o="copy":n.indexOf(i)>=0?o="move":t.indexOf(i)>=0&&(o="copy"),o}var t=e.editor,n=r.createElement("img");n.src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==",s.isOpera&&(n.style.cssText="width:1px;height:1px;position:fixed;top:0;left:0;z-index:2147483647;opacity:0;");var f=["dragWait","dragWaitEnd","startDrag","dragReadyEnd","onMouseDrag"];f.forEach(function(t){e[t]=this[t]},this),t.addEventListener("mousedown",this.onMouseDown.bind(e));var c=t.container,h,p,d,v,m,g,y=0,b,w,E,S,x;this.onDragStart=function(e){if(this.cancelDrag||!c.draggable){var r=this;return setTimeout(function(){r.startSelect(),r.captureMouse(e)},0),e.preventDefault()}m=t.getSelectionRange();var i=e.dataTransfer;i.effectAllowed=t.getReadOnly()?"copy":"copyMove",s.isOpera&&(t.container.appendChild(n),n._top=n.offsetTop),i.setDragImage&&i.setDragImage(n,0,0),s.isOpera&&t.container.removeChild(n),i.clearData(),i.setData("Text",t.session.getTextRange()),w=!0,this.setState("drag")},this.onDragEnd=function(e){c.draggable=!1,w=!1,this.setState(null);if(!t.getReadOnly()){var n=e.dataTransfer.dropEffect;!b&&n=="move"&&t.session.remove(t.getSelectionRange()),t.renderer.$cursorLayer.setBlinking(!0)}this.editor.unsetStyle("ace_dragging")},this.onDragEnter=function(e){if(t.getReadOnly()||!M(e.dataTransfer))return;return h||k(),y++,e.dataTransfer.dropEffect=b=_(e),i.preventDefault(e)},this.onDragOver=function(e){if(t.getReadOnly()||!M(e.dataTransfer))return;return h||(k(),y++),A!==null&&(A=null),p=e.clientX,d=e.clientY,e.dataTransfer.dropEffect=b=_(e),i.preventDefault(e)},this.onDragLeave=function(e){y--;if(y<=0&&h)return L(),b=null,i.preventDefault(e)},this.onDrop=function(e){if(!h)return;var n=e.dataTransfer;if(w)switch(b){case"move":m.contains(g.row,g.column)?m={start:g,end:g}:m=t.moveText(m,g);break;case"copy":m=t.moveText(m,g,!0)}else{var r=n.getData("Text");m={start:g,end:t.session.insert(g,r)},t.focus(),b=null}return L(),i.preventDefault(e)},i.addListener(c,"dragstart",this.onDragStart.bind(e)),i.addListener(c,"dragend",this.onDragEnd.bind(e)),i.addListener(c,"dragenter",this.onDragEnter.bind(e)),i.addListener(c,"dragover",this.onDragOver.bind(e)),i.addListener(c,"dragleave",this.onDragLeave.bind(e)),i.addListener(c,"drop",this.onDrop.bind(e));var A=null}function l(e,t,n,r){return Math.sqrt(Math.pow(n-e,2)+Math.pow(r-t,2))}var r=e("../lib/dom"),i=e("../lib/event"),s=e("../lib/useragent"),o=200,u=200,a=5;(function(){this.dragWait=function(){var e=Date.now()-this.mousedownEvent.time;e>this.editor.getDragDelay()&&this.startDrag()},this.dragWaitEnd=function(){var e=this.editor.container;e.draggable=!1,this.startSelect(this.mousedownEvent.getDocumentPosition()),this.selectEnd()},this.dragReadyEnd=function(e){this.editor.renderer.$cursorLayer.setBlinking(!this.editor.getReadOnly()),this.editor.unsetStyle("ace_dragging"),this.dragWaitEnd()},this.startDrag=function(){this.cancelDrag=!1;var e=this.editor.container;e.draggable=!0,this.editor.renderer.$cursorLayer.setBlinking(!1),this.editor.setStyle("ace_dragging"),this.setState("dragReady")},this.onMouseDrag=function(e){var t=this.editor.container;if(s.isIE&&this.state=="dragReady"){var n=l(this.mousedownEvent.x,this.mousedownEvent.y,this.x,this.y);n>3&&t.dragDrop()}if(this.state==="dragWait"){var n=l(this.mousedownEvent.x,this.mousedownEvent.y,this.x,this.y);n>0&&(t.draggable=!1,this.startSelect(this.mousedownEvent.getDocumentPosition()))}},this.onMouseDown=function(e){if(!this.$dragEnabled)return;this.mousedownEvent=e;var t=this.editor,n=e.inSelection(),r=e.getButton(),i=e.domEvent.detail||1;if(i===1&&r===0&&n){if(e.editor.inMultiSelectMode&&(e.getAccelKey()||e.getShiftKey()))return;this.mousedownEvent.time=Date.now();var o=e.domEvent.target||e.domEvent.srcElement;"unselectable"in o&&(o.unselectable="on");if(t.getDragDelay()){if(s.isWebKit){this.cancelDrag=!0;var u=t.container;u.draggable=!0}this.setState("dragWait")}else this.startDrag();this.captureMouse(e,this.onMouseDrag.bind(this)),e.defaultPrevented=!0}}}).call(f.prototype),t.DragdropHandler=f}),ace.define("ace/lib/net",["require","exports","module","ace/lib/dom"],function(e,t,n){"use strict";var r=e("./dom");t.get=function(e,t){var n=new XMLHttpRequest;n.open("GET",e,!0),n.onreadystatechange=function(){n.readyState===4&&t(n.responseText)},n.send(null)},t.loadScript=function(e,t){var n=r.getDocumentHead(),i=document.createElement("script");i.src=e,n.appendChild(i),i.onload=i.onreadystatechange=function(e,n){if(n||!i.readyState||i.readyState=="loaded"||i.readyState=="complete")i=i.onload=i.onreadystatechange=null,n||t()}},t.qualifyURL=function(e){var t=document.createElement("a");return t.href=e,t.href}}),ace.define("ace/lib/event_emitter",["require","exports","module"],function(e,t,n){"use strict";var r={},i=function(){this.propagationStopped=!0},s=function(){this.defaultPrevented=!0};r._emit=r._dispatchEvent=function(e,t){this._eventRegistry||(this._eventRegistry={}),this._defaultHandlers||(this._defaultHandlers={});var n=this._eventRegistry[e]||[],r=this._defaultHandlers[e];if(!n.length&&!r)return;if(typeof t!="object"||!t)t={};t.type||(t.type=e),t.stopPropagation||(t.stopPropagation=i),t.preventDefault||(t.preventDefault=s),n=n.slice();for(var o=0;o<n.length;o++){n[o](t,this);if(t.propagationStopped)break}if(r&&!t.defaultPrevented)return r(t,this)},r._signal=function(e,t){var n=(this._eventRegistry||{})[e];if(!n)return;n=n.slice();for(var r=0;r<n.length;r++)n[r](t,this)},r.once=function(e,t){var n=this;t&&this.addEventListener(e,function r(){n.removeEventListener(e,r),t.apply(null,arguments)})},r.setDefaultHandler=function(e,t){var n=this._defaultHandlers;n||(n=this._defaultHandlers={_disabled_:{}});if(n[e]){var r=n[e],i=n._disabled_[e];i||(n._disabled_[e]=i=[]),i.push(r);var s=i.indexOf(t);s!=-1&&i.splice(s,1)}n[e]=t},r.removeDefaultHandler=function(e,t){var n=this._defaultHandlers;if(!n)return;var r=n._disabled_[e];if(n[e]==t){var i=n[e];r&&this.setDefaultHandler(e,r.pop())}else if(r){var s=r.indexOf(t);s!=-1&&r.splice(s,1)}},r.on=r.addEventListener=function(e,t,n){this._eventRegistry=this._eventRegistry||{};var r=this._eventRegistry[e];return r||(r=this._eventRegistry[e]=[]),r.indexOf(t)==-1&&r[n?"unshift":"push"](t),t},r.off=r.removeListener=r.removeEventListener=function(e,t){this._eventRegistry=this._eventRegistry||{};var n=this._eventRegistry[e];if(!n)return;var r=n.indexOf(t);r!==-1&&n.splice(r,1)},r.removeAllListeners=function(e){this._eventRegistry&&(this._eventRegistry[e]=[])},t.EventEmitter=r}),ace.define("ace/config",["require","exports","module","ace/lib/lang","ace/lib/oop","ace/lib/net","ace/lib/event_emitter"],function(e,t,n){"no use strict";function f(r){a.packaged=r||e.packaged||n.packaged||u.define&&define.packaged;if(!u.document)return"";var i={},s="",o=document.currentScript||document._currentScript,f=o&&o.ownerDocument||document,c=f.getElementsByTagName("script");for(var h=0;h<c.length;h++){var p=c[h],d=p.src||p.getAttribute("src");if(!d)continue;var v=p.attributes;for(var m=0,g=v.length;m<g;m++){var y=v[m];y.name.indexOf("data-ace-")===0&&(i[l(y.name.replace(/^data-ace-/,""))]=y.value)}var b=d.match(/^(.*)\/ace(\-\w+)?\.js(\?|$)/);b&&(s=b[1])}s&&(i.base=i.base||s,i.packaged=!0),i.basePath=i.base,i.workerPath=i.workerPath||i.base,i.modePath=i.modePath||i.base,i.themePath=i.themePath||i.base,delete i.base;for(var w in i)typeof i[w]!="undefined"&&t.set(w,i[w])}function l(e){return e.replace(/-(.)/g,function(e,t){return t.toUpperCase()})}var r=e("./lib/lang"),i=e("./lib/oop"),s=e("./lib/net"),o=e("./lib/event_emitter").EventEmitter,u=function(){return this}(),a={packaged:!1,workerPath:null,modePath:null,themePath:null,basePath:"",suffix:".js",$moduleUrls:{}};t.get=function(e){if(!a.hasOwnProperty(e))throw new Error("Unknown config key: "+e);return a[e]},t.set=function(e,t){if(!a.hasOwnProperty(e))throw new Error("Unknown config key: "+e);a[e]=t},t.all=function(){return r.copyObject(a)},i.implement(t,o),t.moduleUrl=function(e,t){if(a.$moduleUrls[e])return a.$moduleUrls[e];var n=e.split("/");t=t||n[n.length-2]||"";var r=t=="snippets"?"/":"-",i=n[n.length-1];if(r=="-"){var s=new RegExp("^"+t+"[\\-_]|[\\-_]"+t+"$","g");i=i.replace(s,"")}(!i||i==t)&&n.length>1&&(i=n[n.length-2]);var o=a[t+"Path"];return o==null?o=a.basePath:r=="/"&&(t=r=""),o&&o.slice(-1)!="/"&&(o+="/"),o+t+r+i+this.get("suffix")},t.setModuleUrl=function(e,t){return a.$moduleUrls[e]=t},t.$loading={},t.loadModule=function(n,r){var i,o;Array.isArray(n)&&(o=n[0],n=n[1]);try{i=e(n)}catch(u){}if(i&&!t.$loading[n])return r&&r(i);t.$loading[n]||(t.$loading[n]=[]),t.$loading[n].push(r);if(t.$loading[n].length>1)return;var a=function(){e([n],function(e){t._emit("load.module",{name:n,module:e});var r=t.$loading[n];t.$loading[n]=null,r.forEach(function(t){t&&t(e)})})};if(!t.get("packaged"))return a();s.loadScript(t.moduleUrl(n,o),a)},t.init=f;var c={setOptions:function(e){Object.keys(e).forEach(function(t){this.setOption(t,e[t])},this)},getOptions:function(e){var t={};return e?Array.isArray(e)||(t=e,e=Object.keys(t)):e=Object.keys(this.$options),e.forEach(function(e){t[e]=this.getOption(e)},this),t},setOption:function(e,t){if(this["$"+e]===t)return;var n=this.$options[e];if(!n)return typeof console!="undefined"&&console.warn&&console.warn('misspelled option "'+e+'"'),undefined;if(n.forwardTo)return this[n.forwardTo]&&this[n.forwardTo].setOption(e,t);n.handlesSet||(this["$"+e]=t),n&&n.set&&n.set.call(this,t)},getOption:function(e){var t=this.$options[e];return t?t.forwardTo?this[t.forwardTo]&&this[t.forwardTo].getOption(e):t&&t.get?t.get.call(this):this["$"+e]:(typeof console!="undefined"&&console.warn&&console.warn('misspelled option "'+e+'"'),undefined)}},h={};t.defineOptions=function(e,t,n){return e.$options||(h[t]=e.$options={}),Object.keys(n).forEach(function(t){var r=n[t];typeof r=="string"&&(r={forwardTo:r}),r.name||(r.name=t),e.$options[r.name]=r,"initialValue"in r&&(e["$"+r.name]=r.initialValue)}),i.implement(e,c),this},t.resetOptions=function(e){Object.keys(e.$options).forEach(function(t){var n=e.$options[t];"value"in n&&e.setOption(t,n.value)})},t.setDefaultValue=function(e,n,r){var i=h[e]||(h[e]={});i[n]&&(i.forwardTo?t.setDefaultValue(i.forwardTo,n,r):i[n].value=r)},t.setDefaultValues=function(e,n){Object.keys(n).forEach(function(r){t.setDefaultValue(e,r,n[r])})}}),ace.define("ace/mouse/mouse_handler",["require","exports","module","ace/lib/event","ace/lib/useragent","ace/mouse/default_handlers","ace/mouse/default_gutter_handler","ace/mouse/mouse_event","ace/mouse/dragdrop_handler","ace/config"],function(e,t,n){"use strict";var r=e("../lib/event"),i=e("../lib/useragent"),s=e("./default_handlers").DefaultHandlers,o=e("./default_gutter_handler").GutterHandler,u=e("./mouse_event").MouseEvent,a=e("./dragdrop_handler").DragdropHandler,f=e("../config"),l=function(e){var t=this;this.editor=e,new s(this),new o(this),new a(this);var n=function(t){!e.isFocused()&&e.textInput&&e.textInput.onContextMenu(t),e.focus()},u=e.renderer.getMouseEventTarget();r.addListener(u,"click",this.onMouseEvent.bind(this,"click")),r.addListener(u,"mousemove",this.onMouseMove.bind(this,"mousemove")),r.addMultiMouseDownListener(u,[400,300,250],this,"onMouseEvent"),e.renderer.scrollBarV&&(r.addMultiMouseDownListener(e.renderer.scrollBarV.inner,[400,300,250],this,"onMouseEvent"),r.addMultiMouseDownListener(e.renderer.scrollBarH.inner,[400,300,250],this,"onMouseEvent"),i.isIE&&(r.addListener(e.renderer.scrollBarV.element,"mousedown",n),r.addListener(e.renderer.scrollBarH.element,"mousemove",n))),r.addMouseWheelListener(e.container,this.onMouseWheel.bind(this,"mousewheel"));var f=e.renderer.$gutter;r.addListener(f,"mousedown",this.onMouseEvent.bind(this,"guttermousedown")),r.addListener(f,"click",this.onMouseEvent.bind(this,"gutterclick")),r.addListener(f,"dblclick",this.onMouseEvent.bind(this,"gutterdblclick")),r.addListener(f,"mousemove",this.onMouseEvent.bind(this,"guttermousemove")),r.addListener(u,"mousedown",n),r.addListener(f,"mousedown",function(t){return e.focus(),r.preventDefault(t)}),e.on("mousemove",function(n){if(t.state||t.$dragDelay||!t.$dragEnabled)return;var r=e.renderer.screenToTextCoordinates(n.x,n.y),i=e.session.selection.getRange(),s=e.renderer;!i.isEmpty()&&i.insideStart(r.row,r.column)?s.setCursorStyle("default"):s.setCursorStyle("")})};(function(){this.onMouseEvent=function(e,t){this.editor._emit(e,new u(t,this.editor))},this.onMouseMove=function(e,t){var n=this.editor._eventRegistry&&this.editor._eventRegistry.mousemove;if(!n||!n.length)return;this.editor._emit(e,new u(t,this.editor))},this.onMouseWheel=function(e,t){var n=new u(t,this.editor);n.speed=this.$scrollSpeed*2,n.wheelX=t.wheelX,n.wheelY=t.wheelY,this.editor._emit(e,n)},this.setState=function(e){this.state=e},this.captureMouse=function(e,t){this.x=e.x,this.y=e.y,this.isMousePressed=!0;var n=this.editor.renderer;n.$keepTextAreaAtCursor&&(n.$keepTextAreaAtCursor=null);var s=this,o=function(e){if(!e)return;if(i.isWebKit&&!e.which&&s.releaseMouse)return s.releaseMouse();s.x=e.clientX,s.y=e.clientY,t&&t(e),s.mouseEvent=new u(e,s.editor),s.$mouseMoved=!0},a=function(e){clearInterval(l),f(),s[s.state+"End"]&&s[s.state+"End"](e),s.state="",n.$keepTextAreaAtCursor==null&&(n.$keepTextAreaAtCursor=!0,n.$moveTextAreaToCursor()),s.isMousePressed=!1,s.$onCaptureMouseMove=s.releaseMouse=null,e&&s.onMouseEvent("mouseup",e)},f=function(){s[s.state]&&s[s.state](),s.$mouseMoved=!1};if(i.isOldIE&&e.domEvent.type=="dblclick")return setTimeout(function(){a(e)});s.$onCaptureMouseMove=o,s.releaseMouse=r.capture(this.editor.container,o,a);var l=setInterval(f,20)},this.releaseMouse=null,this.cancelContextMenu=function(){var e=function(t){if(t&&t.domEvent&&t.domEvent.type!="contextmenu")return;this.editor.off("nativecontextmenu",e),t&&t.domEvent&&r.stopEvent(t.domEvent)}.bind(this);setTimeout(e,10),this.editor.on("nativecontextmenu",e)}}).call(l.prototype),f.defineOptions(l.prototype,"mouseHandler",{scrollSpeed:{initialValue:2},dragDelay:{initialValue:i.isMac?150:0},dragEnabled:{initialValue:!0},focusTimout:{initialValue:0},tooltipFollowsMouse:{initialValue:!0}}),t.MouseHandler=l}),ace.define("ace/mouse/fold_handler",["require","exports","module"],function(e,t,n){"use strict";function r(e){e.on("click",function(t){var n=t.getDocumentPosition(),r=e.session,i=r.getFoldAt(n.row,n.column,1);i&&(t.getAccelKey()?r.removeFold(i):r.expandFold(i),t.stop())}),e.on("gutterclick",function(t){var n=e.renderer.$gutterLayer.getRegion(t);if(n=="foldWidgets"){var r=t.getDocumentPosition().row,i=e.session;i.foldWidgets&&i.foldWidgets[r]&&e.session.onFoldWidgetClick(r,t),e.isFocused()||e.focus(),t.stop()}}),e.on("gutterdblclick",function(t){var n=e.renderer.$gutterLayer.getRegion(t);if(n=="foldWidgets"){var r=t.getDocumentPosition().row,i=e.session,s=i.getParentFoldRangeData(r,!0),o=s.range||s.firstRange;if(o){r=o.start.row;var u=i.getFoldAt(r,i.getLine(r).length,1);u?i.removeFold(u):(i.addFold("...",o),e.renderer.scrollCursorIntoView({row:o.start.row,column:0}))}t.stop()}})}t.FoldHandler=r}),ace.define("ace/keyboard/keybinding",["require","exports","module","ace/lib/keys","ace/lib/event"],function(e,t,n){"use strict";var r=e("../lib/keys"),i=e("../lib/event"),s=function(e){this.$editor=e,this.$data={editor:e},this.$handlers=[],this.setDefaultHandler(e.commands)};(function(){this.setDefaultHandler=function(e){this.removeKeyboardHandler(this.$defaultHandler),this.$defaultHandler=e,this.addKeyboardHandler(e,0)},this.setKeyboardHandler=function(e){var t=this.$handlers;if(t[t.length-1]==e)return;while(t[t.length-1]&&t[t.length-1]!=this.$defaultHandler)this.removeKeyboardHandler(t[t.length-1]);this.addKeyboardHandler(e,1)},this.addKeyboardHandler=function(e,t){if(!e)return;typeof e=="function"&&!e.handleKeyboard&&(e.handleKeyboard=e);var n=this.$handlers.indexOf(e);n!=-1&&this.$handlers.splice(n,1),t==undefined?this.$handlers.push(e):this.$handlers.splice(t,0,e),n==-1&&e.attach&&e.attach(this.$editor)},this.removeKeyboardHandler=function(e){var t=this.$handlers.indexOf(e);return t==-1?!1:(this.$handlers.splice(t,1),e.detach&&e.detach(this.$editor),!0)},this.getKeyboardHandler=function(){return this.$handlers[this.$handlers.length-1]},this.$callKeyboardHandlers=function(e,t,n,r){var s,o=!1,u=this.$editor.commands;for(var a=this.$handlers.length;a--;){s=this.$handlers[a].handleKeyboard(this.$data,e,t,n,r);if(!s||!s.command)continue;s.command=="null"?o=!0:o=u.exec(s.command,this.$editor,s.args,r),o&&r&&e!=-1&&s.passEvent!=1&&s.command.passEvent!=1&&i.stopEvent(r);if(o)break}return o},this.onCommandKey=function(e,t,n){var i=r.keyCodeToString(n);this.$callKeyboardHandlers(t,i,n,e)},this.onTextInput=function(e){var t=this.$callKeyboardHandlers(-1,e);t||this.$editor.commands.exec("insertstring",this.$editor,e)}}).call(s.prototype),t.KeyBinding=s}),ace.define("ace/range",["require","exports","module"],function(e,t,n){"use strict";var r=function(e,t){return e.row-t.row||e.column-t.column},i=function(e,t,n,r){this.start={row:e,column:t},this.end={row:n,column:r}};(function(){this.isEqual=function(e){return this.start.row===e.start.row&&this.end.row===e.end.row&&this.start.column===e.start.column&&this.end.column===e.end.column},this.toString=function(){return"Range: ["+this.start.row+"/"+this.start.column+"] -> ["+this.end.row+"/"+this.end.column+"]"},this.contains=function(e,t){return this.compare(e,t)==0},this.compareRange=function(e){var t,n=e.end,r=e.start;return t=this.compare(n.row,n.column),t==1?(t=this.compare(r.row,r.column),t==1?2:t==0?1:0):t==-1?-2:(t=this.compare(r.row,r.column),t==-1?-1:t==1?42:0)},this.comparePoint=function(e){return this.compare(e.row,e.column)},this.containsRange=function(e){return this.comparePoint(e.start)==0&&this.comparePoint(e.end)==0},this.intersects=function(e){var t=this.compareRange(e);return t==-1||t==0||t==1},this.isEnd=function(e,t){return this.end.row==e&&this.end.column==t},this.isStart=function(e,t){return this.start.row==e&&this.start.column==t},this.setStart=function(e,t){typeof e=="object"?(this.start.column=e.column,this.start.row=e.row):(this.start.row=e,this.start.column=t)},this.setEnd=function(e,t){typeof e=="object"?(this.end.column=e.column,this.end.row=e.row):(this.end.row=e,this.end.column=t)},this.inside=function(e,t){return this.compare(e,t)==0?this.isEnd(e,t)||this.isStart(e,t)?!1:!0:!1},this.insideStart=function(e,t){return this.compare(e,t)==0?this.isEnd(e,t)?!1:!0:!1},this.insideEnd=function(e,t){return this.compare(e,t)==0?this.isStart(e,t)?!1:!0:!1},this.compare=function(e,t){return!this.isMultiLine()&&e===this.start.row?t<this.start.column?-1:t>this.end.column?1:0:e<this.start.row?-1:e>this.end.row?1:this.start.row===e?t>=this.start.column?0:-1:this.end.row===e?t<=this.end.column?0:1:0},this.compareStart=function(e,t){return this.start.row==e&&this.start.column==t?-1:this.compare(e,t)},this.compareEnd=function(e,t){return this.end.row==e&&this.end.column==t?1:this.compare(e,t)},this.compareInside=function(e,t){return this.end.row==e&&this.end.column==t?1:this.start.row==e&&this.start.column==t?-1:this.compare(e,t)},this.clipRows=function(e,t){if(this.end.row>t)var n={row:t+1,column:0};else if(this.end.row<e)var n={row:e,column:0};if(this.start.row>t)var r={row:t+1,column:0};else if(this.start.row<e)var r={row:e,column:0};return i.fromPoints(r||this.start,n||this.end)},this.extend=function(e,t){var n=this.compare(e,t);if(n==0)return this;if(n==-1)var r={row:e,column:t};else var s={row:e,column:t};return i.fromPoints(r||this.start,s||this.end)},this.isEmpty=function(){return this.start.row===this.end.row&&this.start.column===this.end.column},this.isMultiLine=function(){return this.start.row!==this.end.row},this.clone=function(){return i.fromPoints(this.start,this.end)},this.collapseRows=function(){return this.end.column==0?new i(this.start.row,0,Math.max(this.start.row,this.end.row-1),0):new i(this.start.row,0,this.end.row,0)},this.toScreenRange=function(e){var t=e.documentToScreenPosition(this.start),n=e.documentToScreenPosition(this.end);return new i(t.row,t.column,n.row,n.column)},this.moveBy=function(e,t){this.start.row+=e,this.start.column+=t,this.end.row+=e,this.end.column+=t}}).call(i.prototype),i.fromPoints=function(e,t){return new i(e.row,e.column,t.row,t.column)},i.comparePoints=r,i.comparePoints=function(e,t){return e.row-t.row||e.column-t.column},t.Range=i}),ace.define("ace/selection",["require","exports","module","ace/lib/oop","ace/lib/lang","ace/lib/event_emitter","ace/range"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/lang"),s=e("./lib/event_emitter").EventEmitter,o=e("./range").Range,u=function(e){this.session=e,this.doc=e.getDocument(),this.clearSelection(),this.lead=this.selectionLead=this.doc.createAnchor(0,0),this.anchor=this.selectionAnchor=this.doc.createAnchor(0,0);var t=this;this.lead.on("change",function(e){t._emit("changeCursor"),t.$isEmpty||t._emit("changeSelection"),!t.$keepDesiredColumnOnChange&&e.old.column!=e.value.column&&(t.$desiredColumn=null)}),this.selectionAnchor.on("change",function(){t.$isEmpty||t._emit("changeSelection")})};(function(){r.implement(this,s),this.isEmpty=function(){return this.$isEmpty||this.anchor.row==this.lead.row&&this.anchor.column==this.lead.column},this.isMultiLine=function(){return this.isEmpty()?!1:this.getRange().isMultiLine()},this.getCursor=function(){return this.lead.getPosition()},this.setSelectionAnchor=function(e,t){this.anchor.setPosition(e,t),this.$isEmpty&&(this.$isEmpty=!1,this._emit("changeSelection"))},this.getSelectionAnchor=function(){return this.$isEmpty?this.getSelectionLead():this.anchor.getPosition()},this.getSelectionLead=function(){return this.lead.getPosition()},this.shiftSelection=function(e){if(this.$isEmpty){this.moveCursorTo(this.lead.row,this.lead.column+e);return}var t=this.getSelectionAnchor(),n=this.getSelectionLead(),r=this.isBackwards();(!r||t.column!==0)&&this.setSelectionAnchor(t.row,t.column+e),(r||n.column!==0)&&this.$moveSelection(function(){this.moveCursorTo(n.row,n.column+e)})},this.isBackwards=function(){var e=this.anchor,t=this.lead;return e.row>t.row||e.row==t.row&&e.column>t.column},this.getRange=function(){var e=this.anchor,t=this.lead;return this.isEmpty()?o.fromPoints(t,t):this.isBackwards()?o.fromPoints(t,e):o.fromPoints(e,t)},this.clearSelection=function(){this.$isEmpty||(this.$isEmpty=!0,this._emit("changeSelection"))},this.selectAll=function(){var e=this.doc.getLength()-1;this.setSelectionAnchor(0,0),this.moveCursorTo(e,this.doc.getLine(e).length)},this.setRange=this.setSelectionRange=function(e,t){t?(this.setSelectionAnchor(e.end.row,e.end.column),this.selectTo(e.start.row,e.start.column)):(this.setSelectionAnchor(e.start.row,e.start.column),this.selectTo(e.end.row,e.end.column)),this.getRange().isEmpty()&&(this.$isEmpty=!0),this.$desiredColumn=null},this.$moveSelection=function(e){var t=this.lead;this.$isEmpty&&this.setSelectionAnchor(t.row,t.column),e.call(this)},this.selectTo=function(e,t){this.$moveSelection(function(){this.moveCursorTo(e,t)})},this.selectToPosition=function(e){this.$moveSelection(function(){this.moveCursorToPosition(e)})},this.moveTo=function(e,t){this.clearSelection(),this.moveCursorTo(e,t)},this.moveToPosition=function(e){this.clearSelection(),this.moveCursorToPosition(e)},this.selectUp=function(){this.$moveSelection(this.moveCursorUp)},this.selectDown=function(){this.$moveSelection(this.moveCursorDown)},this.selectRight=function(){this.$moveSelection(this.moveCursorRight)},this.selectLeft=function(){this.$moveSelection(this.moveCursorLeft)},this.selectLineStart=function(){this.$moveSelection(this.moveCursorLineStart)},this.selectLineEnd=function(){this.$moveSelection(this.moveCursorLineEnd)},this.selectFileEnd=function(){this.$moveSelection(this.moveCursorFileEnd)},this.selectFileStart=function(){this.$moveSelection(this.moveCursorFileStart)},this.selectWordRight=function(){this.$moveSelection(this.moveCursorWordRight)},this.selectWordLeft=function(){this.$moveSelection(this.moveCursorWordLeft)},this.getWordRange=function(e,t){if(typeof t=="undefined"){var n=e||this.lead;e=n.row,t=n.column}return this.session.getWordRange(e,t)},this.selectWord=function(){this.setSelectionRange(this.getWordRange())},this.selectAWord=function(){var e=this.getCursor(),t=this.session.getAWordRange(e.row,e.column);this.setSelectionRange(t)},this.getLineRange=function(e,t){var n=typeof e=="number"?e:this.lead.row,r,i=this.session.getFoldLine(n);return i?(n=i.start.row,r=i.end.row):r=n,t===!0?new o(n,0,r,this.session.getLine(r).length):new o(n,0,r+1,0)},this.selectLine=function(){this.setSelectionRange(this.getLineRange())},this.moveCursorUp=function(){this.moveCursorBy(-1,0)},this.moveCursorDown=function(){this.moveCursorBy(1,0)},this.moveCursorLeft=function(){var e=this.lead.getPosition(),t;if(t=this.session.getFoldAt(e.row,e.column,-1))this.moveCursorTo(t.start.row,t.start.column);else if(e.column==0)e.row>0&&this.moveCursorTo(e.row-1,this.doc.getLine(e.row-1).length);else{var n=this.session.getTabSize();this.session.isTabStop(e)&&this.doc.getLine(e.row).slice(e.column-n,e.column).split(" ").length-1==n?this.moveCursorBy(0,-n):this.moveCursorBy(0,-1)}},this.moveCursorRight=function(){var e=this.lead.getPosition(),t;if(t=this.session.getFoldAt(e.row,e.column,1))this.moveCursorTo(t.end.row,t.end.column);else if(this.lead.column==this.doc.getLine(this.lead.row).length)this.lead.row<this.doc.getLength()-1&&this.moveCursorTo(this.lead.row+1,0);else{var n=this.session.getTabSize(),e=this.lead;this.session.isTabStop(e)&&this.doc.getLine(e.row).slice(e.column,e.column+n).split(" ").length-1==n?this.moveCursorBy(0,n):this.moveCursorBy(0,1)}},this.moveCursorLineStart=function(){var e=this.lead.row,t=this.lead.column,n=this.session.documentToScreenRow(e,t),r=this.session.screenToDocumentPosition(n,0),i=this.session.getDisplayLine(e,null,r.row,r.column),s=i.match(/^\s*/);s[0].length!=t&&!this.session.$useEmacsStyleLineStart&&(r.column+=s[0].length),this.moveCursorToPosition(r)},this.moveCursorLineEnd=function(){var e=this.lead,t=this.session.getDocumentLastRowColumnPosition(e.row,e.column);if(this.lead.column==t.column){var n=this.session.getLine(t.row);if(t.column==n.length){var r=n.search(/\s+$/);r>0&&(t.column=r)}}this.moveCursorTo(t.row,t.column)},this.moveCursorFileEnd=function(){var e=this.doc.getLength()-1,t=this.doc.getLine(e).length;this.moveCursorTo(e,t)},this.moveCursorFileStart=function(){this.moveCursorTo(0,0)},this.moveCursorLongWordRight=function(){var e=this.lead.row,t=this.lead.column,n=this.doc.getLine(e),r=n.substring(t),i;this.session.nonTokenRe.lastIndex=0,this.session.tokenRe.lastIndex=0;var s=this.session.getFoldAt(e,t,1);if(s){this.moveCursorTo(s.end.row,s.end.column);return}if(i=this.session.nonTokenRe.exec(r))t+=this.session.nonTokenRe.lastIndex,this.session.nonTokenRe.lastIndex=0,r=n.substring(t);if(t>=n.length){this.moveCursorTo(e,n.length),this.moveCursorRight(),e<this.doc.getLength()-1&&this.moveCursorWordRight();return}if(i=this.session.tokenRe.exec(r))t+=this.session.tokenRe.lastIndex,this.session.tokenRe.lastIndex=0;this.moveCursorTo(e,t)},this.moveCursorLongWordLeft=function(){var e=this.lead.row,t=this.lead.column,n;if(n=this.session.getFoldAt(e,t,-1)){this.moveCursorTo(n.start.row,n.start.column);return}var r=this.session.getFoldStringAt(e,t,-1);r==null&&(r=this.doc.getLine(e).substring(0,t));var s=i.stringReverse(r),o;this.session.nonTokenRe.lastIndex=0,this.session.tokenRe.lastIndex=0;if(o=this.session.nonTokenRe.exec(s))t-=this.session.nonTokenRe.lastIndex,s=s.slice(this.session.nonTokenRe.lastIndex),this.session.nonTokenRe.lastIndex=0;if(t<=0){this.moveCursorTo(e,0),this.moveCursorLeft(),e>0&&this.moveCursorWordLeft();return}if(o=this.session.tokenRe.exec(s))t-=this.session.tokenRe.lastIndex,this.session.tokenRe.lastIndex=0;this.moveCursorTo(e,t)},this.$shortWordEndIndex=function(e){var t,n=0,r,i=/\s/,s=this.session.tokenRe;s.lastIndex=0;if(t=this.session.tokenRe.exec(e))n=this.session.tokenRe.lastIndex;else{while((r=e[n])&&i.test(r))n++;if(n<1){s.lastIndex=0;while((r=e[n])&&!s.test(r)){s.lastIndex=0,n++;if(i.test(r)){if(n>2){n--;break}while((r=e[n])&&i.test(r))n++;if(n>2)break}}}}return s.lastIndex=0,n},this.moveCursorShortWordRight=function(){var e=this.lead.row,t=this.lead.column,n=this.doc.getLine(e),r=n.substring(t),i=this.session.getFoldAt(e,t,1);if(i)return this.moveCursorTo(i.end.row,i.end.column);if(t==n.length){var s=this.doc.getLength();do e++,r=this.doc.getLine(e);while(e<s&&/^\s*$/.test(r));/^\s+/.test(r)||(r=""),t=0}var o=this.$shortWordEndIndex(r);this.moveCursorTo(e,t+o)},this.moveCursorShortWordLeft=function(){var e=this.lead.row,t=this.lead.column,n;if(n=this.session.getFoldAt(e,t,-1))return this.moveCursorTo(n.start.row,n.start.column);var r=this.session.getLine(e).substring(0,t);if(t==0){do e--,r=this.doc.getLine(e);while(e>0&&/^\s*$/.test(r));t=r.length,/\s+$/.test(r)||(r="")}var s=i.stringReverse(r),o=this.$shortWordEndIndex(s);return this.moveCursorTo(e,t-o)},this.moveCursorWordRight=function(){this.session.$selectLongWords?this.moveCursorLongWordRight():this.moveCursorShortWordRight()},this.moveCursorWordLeft=function(){this.session.$selectLongWords?this.moveCursorLongWordLeft():this.moveCursorShortWordLeft()},this.moveCursorBy=function(e,t){var n=this.session.documentToScreenPosition(this.lead.row,this.lead.column);t===0&&(this.$desiredColumn?n.column=this.$desiredColumn:this.$desiredColumn=n.column);var r=this.session.screenToDocumentPosition(n.row+e,n.column);e!==0&&t===0&&r.row===this.lead.row&&r.column===this.lead.column&&this.session.lineWidgets&&this.session.lineWidgets[r.row]&&r.row++,this.moveCursorTo(r.row,r.column+t,t===0)},this.moveCursorToPosition=function(e){this.moveCursorTo(e.row,e.column)},this.moveCursorTo=function(e,t,n){var r=this.session.getFoldAt(e,t,1);r&&(e=r.start.row,t=r.start.column),this.$keepDesiredColumnOnChange=!0,this.lead.setPosition(e,t),this.$keepDesiredColumnOnChange=!1,n||(this.$desiredColumn=null)},this.moveCursorToScreen=function(e,t,n){var r=this.session.screenToDocumentPosition(e,t);this.moveCursorTo(r.row,r.column,n)},this.detach=function(){this.lead.detach(),this.anchor.detach(),this.session=this.doc=null},this.fromOrientedRange=function(e){this.setSelectionRange(e,e.cursor==e.start),this.$desiredColumn=e.desiredColumn||this.$desiredColumn},this.toOrientedRange=function(e){var t=this.getRange();return e?(e.start.column=t.start.column,e.start.row=t.start.row,e.end.column=t.end.column,e.end.row=t.end.row):e=t,e.cursor=this.isBackwards()?e.start:e.end,e.desiredColumn=this.$desiredColumn,e},this.getRangeOfMovements=function(e){var t=this.getCursor();try{e.call(null,this);var n=this.getCursor();return o.fromPoints(t,n)}catch(r){return o.fromPoints(t,t)}finally{this.moveCursorToPosition(t)}},this.toJSON=function(){if(this.rangeCount)var e=this.ranges.map(function(e){var t=e.clone();return t.isBackwards=e.cursor==e.start,t});else{var e=this.getRange();e.isBackwards=this.isBackwards()}return e},this.fromJSON=function(e){if(e.start==undefined){if(this.rangeList){this.toSingleRange(e[0]);for(var t=e.length;t--;){var n=o.fromPoints(e[t].start,e[t].end);e.isBackwards&&(n.cursor=n.start),this.addRange(n,!0)}return}e=e[0]}this.rangeList&&this.toSingleRange(e),this.setSelectionRange(e,e.isBackwards)},this.isEqual=function(e){if((e.length||this.rangeCount)&&e.length!=this.rangeCount)return!1;if(!e.length||!this.ranges)return this.getRange().isEqual(e);for(var t=this.ranges.length;t--;)if(!this.ranges[t].isEqual(e[t]))return!1;return!0}}).call(u.prototype),t.Selection=u}),ace.define("ace/tokenizer",["require","exports","module"],function(e,t,n){"use strict";var r=1e3,i=function(e){this.states=e,this.regExps={},this.matchMappings={};for(var t in this.states){var n=this.states[t],r=[],i=0,s=this.matchMappings[t]={defaultToken:"text"},o="g",u=[];for(var a=0;a<n.length;a++){var f=n[a];f.defaultToken&&(s.defaultToken=f.defaultToken),f.caseInsensitive&&(o="gi");if(f.regex==null)continue;f.regex instanceof RegExp&&(f.regex=f.regex.toString().slice(1,-1));var l=f.regex,c=(new RegExp("(?:("+l+")|(.))")).exec("a").length-2;if(Array.isArray(f.token))if(f.token.length==1||c==1)f.token=f.token[0];else{if(c-1!=f.token.length)throw new Error("number of classes and regexp groups in '"+f.token+"'\n'"+f.regex+"' doesn't match\n"+(c-1)+"!="+f.token.length);f.tokenArray=f.token,f.token=null,f.onMatch=this.$arrayTokens}else typeof f.token=="function"&&!f.onMatch&&(c>1?f.onMatch=this.$applyToken:f.onMatch=f.token);c>1&&(/\\\d/.test(f.regex)?l=f.regex.replace(/\\([0-9]+)/g,function(e,t){return"\\"+(parseInt(t,10)+i+1)}):(c=1,l=this.removeCapturingGroups(f.regex)),!f.splitRegex&&typeof f.token!="string"&&u.push(f)),s[i]=a,i+=c,r.push(l),f.onMatch||(f.onMatch=null)}r.length||(s[0]=0,r.push("$")),u.forEach(function(e){e.splitRegex=this.createSplitterRegexp(e.regex,o)},this),this.regExps[t]=new RegExp("("+r.join(")|(")+")|($)",o)}};(function(){this.$setMaxTokenCount=function(e){r=e|0},this.$applyToken=function(e){var t=this.splitRegex.exec(e).slice(1),n=this.token.apply(this,t);if(typeof n=="string")return[{type:n,value:e}];var r=[];for(var i=0,s=n.length;i<s;i++)t[i]&&(r[r.length]={type:n[i],value:t[i]});return r},this.$arrayTokens=function(e){if(!e)return[];var t=this.splitRegex.exec(e);if(!t)return"text";var n=[],r=this.tokenArray;for(var i=0,s=r.length;i<s;i++)t[i+1]&&(n[n.length]={type:r[i],value:t[i+1]});return n},this.removeCapturingGroups=function(e){var t=e.replace(/\[(?:\\.|[^\]])*?\]|\\.|\(\?[:=!]|(\()/g,function(e,t){return t?"(?:":e});return t},this.createSplitterRegexp=function(e,t){if(e.indexOf("(?=")!=-1){var n=0,r=!1,i={};e.replace(/(\\.)|(\((?:\?[=!])?)|(\))|([\[\]])/g,function(e,t,s,o,u,a){return r?r=u!="]":u?r=!0:o?(n==i.stack&&(i.end=a+1,i.stack=-1),n--):s&&(n++,s.length!=1&&(i.stack=n,i.start=a)),e}),i.end!=null&&/^\)*$/.test(e.substr(i.end))&&(e=e.substring(0,i.start)+e.substr(i.end))}return new RegExp(e,(t||"").replace("g",""))},this.getLineTokens=function(e,t){if(t&&typeof t!="string"){var n=t.slice(0);t=n[0]}else var n=[];var i=t||"start",s=this.states[i];s||(i="start",s=this.states[i]);var o=this.matchMappings[i],u=this.regExps[i];u.lastIndex=0;var a,f=[],l=0,c={type:null,value:""};while(a=u.exec(e)){var h=o.defaultToken,p=null,d=a[0],v=u.lastIndex;if(v-d.length>l){var m=e.substring(l,v-d.length);c.type==h?c.value+=m:(c.type&&f.push(c),c={type:h,value:m})}for(var g=0;g<a.length-2;g++){if(a[g+1]===undefined)continue;p=s[o[g]],p.onMatch?h=p.onMatch(d,i,n):h=p.token,p.next&&(typeof p.next=="string"?i=p.next:i=p.next(i,n),s=this.states[i],s||(window.console&&console.error&&console.error(i,"doesn't exist"),i="start",s=this.states[i]),o=this.matchMappings[i],l=v,u=this.regExps[i],u.lastIndex=v);break}if(d)if(typeof h=="string")!!p&&p.merge===!1||c.type!==h?(c.type&&f.push(c),c={type:h,value:d}):c.value+=d;else if(h){c.type&&f.push(c),c={type:null,value:""};for(var g=0;g<h.length;g++)f.push(h[g])}if(l==e.length)break;l=v;if(f.length>r){while(l<e.length)c.type&&f.push(c),c={value:e.substring(l,l+=2e3),type:"overflow"};i="start",n=[];break}}return c.type&&f.push(c),n.length>1&&n[0]!==i&&n.unshift(i),{tokens:f,state:n.length?n:i}}}).call(i.prototype),t.Tokenizer=i}),ace.define("ace/mode/text_highlight_rules",["require","exports","module","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../lib/lang"),i=function(){this.$rules={start:[{token:"empty_line",regex:"^$"},{defaultToken:"text"}]}};(function(){this.addRules=function(e,t){if(!t){for(var n in e)this.$rules[n]=e[n];return}for(var n in e){var r=e[n];for(var i=0;i<r.length;i++){var s=r[i];s.next&&(typeof s.next!="string"?s.nextState&&s.nextState.indexOf(t)!==0&&(s.nextState=t+s.nextState):s.next.indexOf(t)!==0&&(s.next=t+s.next))}this.$rules[t+n]=r}},this.getRules=function(){return this.$rules},this.embedRules=function(e,t,n,i,s){var o=typeof e=="function"?(new e).getRules():e;if(i)for(var u=0;u<i.length;u++)i[u]=t+i[u];else{i=[];for(var a in o)i.push(t+a)}this.addRules(o,t);if(n){var f=Array.prototype[s?"push":"unshift"];for(var u=0;u<i.length;u++)f.apply(this.$rules[i[u]],r.deepCopy(n))}this.$embeds||(this.$embeds=[]),this.$embeds.push(t)},this.getEmbeds=function(){return this.$embeds};var e=function(e,t){return(e!="start"||t.length)&&t.unshift(this.nextState,e),this.nextState},t=function(e,t){return t.shift(),t.shift()||"start"};this.normalizeRules=function(){function i(s){var o=r[s];o.processed=!0;for(var u=0;u<o.length;u++){var a=o[u];!a.regex&&a.start&&(a.regex=a.start,a.next||(a.next=[]),a.next.push({defaultToken:a.token},{token:a.token+".end",regex:a.end||a.start,next:"pop"}),a.token=a.token+".start",a.push=!0);var f=a.next||a.push;if(f&&Array.isArray(f)){var l=a.stateName;l||(l=a.token,typeof l!="string"&&(l=l[0]||""),r[l]&&(l+=n++)),r[l]=f,a.next=l,i(l)}else f=="pop"&&(a.next=t);a.push&&(a.nextState=a.next||a.push,a.next=e,delete a.push);if(a.rules)for(var c in a.rules)r[c]?r[c].push&&r[c].push.apply(r[c],a.rules[c]):r[c]=a.rules[c];if(a.include||typeof a=="string")var h=a.include||a,p=r[h];else Array.isArray(a)&&(p=a);if(p){var d=[u,1].concat(p);a.noEscape&&(d=d.filter(function(e){return!e.next})),o.splice.apply(o,d),u--,p=null}a.keywordMap&&(a.token=this.createKeywordMapper(a.keywordMap,a.defaultToken||"text",a.caseInsensitive),delete a.defaultToken)}}var n=0,r=this.$rules;Object.keys(r).forEach(i,this)},this.createKeywordMapper=function(e,t,n,r){var i=Object.create(null);return Object.keys(e).forEach(function(t){var s=e[t];n&&(s=s.toLowerCase());var o=s.split(r||"|");for(var u=o.length;u--;)i[o[u]]=t}),Object.getPrototypeOf(i)&&(i.__proto__=null),this.$keywordList=Object.keys(i),e=null,n?function(e){return i[e.toLowerCase()]||t}:function(e){return i[e]||t}},this.getKeywords=function(){return this.$keywords}}).call(i.prototype),t.TextHighlightRules=i}),ace.define("ace/mode/behaviour",["require","exports","module"],function(e,t,n){"use strict";var r=function(){this.$behaviours={}};(function(){this.add=function(e,t,n){switch(undefined){case this.$behaviours:this.$behaviours={};case this.$behaviours[e]:this.$behaviours[e]={}}this.$behaviours[e][t]=n},this.addBehaviours=function(e){for(var t in e)for(var n in e[t])this.add(t,n,e[t][n])},this.remove=function(e){this.$behaviours&&this.$behaviours[e]&&delete this.$behaviours[e]},this.inherit=function(e,t){if(typeof e=="function")var n=(new e).getBehaviours(t);else var n=e.getBehaviours(t);this.addBehaviours(n)},this.getBehaviours=function(e){if(!e)return this.$behaviours;var t={};for(var n=0;n<e.length;n++)this.$behaviours[e[n]]&&(t[e[n]]=this.$behaviours[e[n]]);return t}}).call(r.prototype),t.Behaviour=r}),ace.define("ace/unicode",["require","exports","module"],function(e,t,n){"use strict";function r(e){var n=/\w{4}/g;for(var r in e)t.packages[r]=e[r].replace(n,"\\u$&")}t.packages={},r({L:"0041-005A0061-007A00AA00B500BA00C0-00D600D8-00F600F8-02C102C6-02D102E0-02E402EC02EE0370-037403760377037A-037D03860388-038A038C038E-03A103A3-03F503F7-0481048A-05250531-055605590561-058705D0-05EA05F0-05F20621-064A066E066F0671-06D306D506E506E606EE06EF06FA-06FC06FF07100712-072F074D-07A507B107CA-07EA07F407F507FA0800-0815081A082408280904-0939093D09500958-0961097109720979-097F0985-098C098F09900993-09A809AA-09B009B209B6-09B909BD09CE09DC09DD09DF-09E109F009F10A05-0A0A0A0F0A100A13-0A280A2A-0A300A320A330A350A360A380A390A59-0A5C0A5E0A72-0A740A85-0A8D0A8F-0A910A93-0AA80AAA-0AB00AB20AB30AB5-0AB90ABD0AD00AE00AE10B05-0B0C0B0F0B100B13-0B280B2A-0B300B320B330B35-0B390B3D0B5C0B5D0B5F-0B610B710B830B85-0B8A0B8E-0B900B92-0B950B990B9A0B9C0B9E0B9F0BA30BA40BA8-0BAA0BAE-0BB90BD00C05-0C0C0C0E-0C100C12-0C280C2A-0C330C35-0C390C3D0C580C590C600C610C85-0C8C0C8E-0C900C92-0CA80CAA-0CB30CB5-0CB90CBD0CDE0CE00CE10D05-0D0C0D0E-0D100D12-0D280D2A-0D390D3D0D600D610D7A-0D7F0D85-0D960D9A-0DB10DB3-0DBB0DBD0DC0-0DC60E01-0E300E320E330E40-0E460E810E820E840E870E880E8A0E8D0E94-0E970E99-0E9F0EA1-0EA30EA50EA70EAA0EAB0EAD-0EB00EB20EB30EBD0EC0-0EC40EC60EDC0EDD0F000F40-0F470F49-0F6C0F88-0F8B1000-102A103F1050-1055105A-105D106110651066106E-10701075-1081108E10A0-10C510D0-10FA10FC1100-1248124A-124D1250-12561258125A-125D1260-1288128A-128D1290-12B012B2-12B512B8-12BE12C012C2-12C512C8-12D612D8-13101312-13151318-135A1380-138F13A0-13F41401-166C166F-167F1681-169A16A0-16EA1700-170C170E-17111720-17311740-17511760-176C176E-17701780-17B317D717DC1820-18771880-18A818AA18B0-18F51900-191C1950-196D1970-19741980-19AB19C1-19C71A00-1A161A20-1A541AA71B05-1B331B45-1B4B1B83-1BA01BAE1BAF1C00-1C231C4D-1C4F1C5A-1C7D1CE9-1CEC1CEE-1CF11D00-1DBF1E00-1F151F18-1F1D1F20-1F451F48-1F4D1F50-1F571F591F5B1F5D1F5F-1F7D1F80-1FB41FB6-1FBC1FBE1FC2-1FC41FC6-1FCC1FD0-1FD31FD6-1FDB1FE0-1FEC1FF2-1FF41FF6-1FFC2071207F2090-209421022107210A-211321152119-211D212421262128212A-212D212F-2139213C-213F2145-2149214E218321842C00-2C2E2C30-2C5E2C60-2CE42CEB-2CEE2D00-2D252D30-2D652D6F2D80-2D962DA0-2DA62DA8-2DAE2DB0-2DB62DB8-2DBE2DC0-2DC62DC8-2DCE2DD0-2DD62DD8-2DDE2E2F300530063031-3035303B303C3041-3096309D-309F30A1-30FA30FC-30FF3105-312D3131-318E31A0-31B731F0-31FF3400-4DB54E00-9FCBA000-A48CA4D0-A4FDA500-A60CA610-A61FA62AA62BA640-A65FA662-A66EA67F-A697A6A0-A6E5A717-A71FA722-A788A78BA78CA7FB-A801A803-A805A807-A80AA80C-A822A840-A873A882-A8B3A8F2-A8F7A8FBA90A-A925A930-A946A960-A97CA984-A9B2A9CFAA00-AA28AA40-AA42AA44-AA4BAA60-AA76AA7AAA80-AAAFAAB1AAB5AAB6AAB9-AABDAAC0AAC2AADB-AADDABC0-ABE2AC00-D7A3D7B0-D7C6D7CB-D7FBF900-FA2DFA30-FA6DFA70-FAD9FB00-FB06FB13-FB17FB1DFB1F-FB28FB2A-FB36FB38-FB3CFB3EFB40FB41FB43FB44FB46-FBB1FBD3-FD3DFD50-FD8FFD92-FDC7FDF0-FDFBFE70-FE74FE76-FEFCFF21-FF3AFF41-FF5AFF66-FFBEFFC2-FFC7FFCA-FFCFFFD2-FFD7FFDA-FFDC",Ll:"0061-007A00AA00B500BA00DF-00F600F8-00FF01010103010501070109010B010D010F01110113011501170119011B011D011F01210123012501270129012B012D012F01310133013501370138013A013C013E014001420144014601480149014B014D014F01510153015501570159015B015D015F01610163016501670169016B016D016F0171017301750177017A017C017E-0180018301850188018C018D019201950199-019B019E01A101A301A501A801AA01AB01AD01B001B401B601B901BA01BD-01BF01C601C901CC01CE01D001D201D401D601D801DA01DC01DD01DF01E101E301E501E701E901EB01ED01EF01F001F301F501F901FB01FD01FF02010203020502070209020B020D020F02110213021502170219021B021D021F02210223022502270229022B022D022F02310233-0239023C023F0240024202470249024B024D024F-02930295-02AF037103730377037B-037D039003AC-03CE03D003D103D5-03D703D903DB03DD03DF03E103E303E503E703E903EB03ED03EF-03F303F503F803FB03FC0430-045F04610463046504670469046B046D046F04710473047504770479047B047D047F0481048B048D048F04910493049504970499049B049D049F04A104A304A504A704A904AB04AD04AF04B104B304B504B704B904BB04BD04BF04C204C404C604C804CA04CC04CE04CF04D104D304D504D704D904DB04DD04DF04E104E304E504E704E904EB04ED04EF04F104F304F504F704F904FB04FD04FF05010503050505070509050B050D050F05110513051505170519051B051D051F0521052305250561-05871D00-1D2B1D62-1D771D79-1D9A1E011E031E051E071E091E0B1E0D1E0F1E111E131E151E171E191E1B1E1D1E1F1E211E231E251E271E291E2B1E2D1E2F1E311E331E351E371E391E3B1E3D1E3F1E411E431E451E471E491E4B1E4D1E4F1E511E531E551E571E591E5B1E5D1E5F1E611E631E651E671E691E6B1E6D1E6F1E711E731E751E771E791E7B1E7D1E7F1E811E831E851E871E891E8B1E8D1E8F1E911E931E95-1E9D1E9F1EA11EA31EA51EA71EA91EAB1EAD1EAF1EB11EB31EB51EB71EB91EBB1EBD1EBF1EC11EC31EC51EC71EC91ECB1ECD1ECF1ED11ED31ED51ED71ED91EDB1EDD1EDF1EE11EE31EE51EE71EE91EEB1EED1EEF1EF11EF31EF51EF71EF91EFB1EFD1EFF-1F071F10-1F151F20-1F271F30-1F371F40-1F451F50-1F571F60-1F671F70-1F7D1F80-1F871F90-1F971FA0-1FA71FB0-1FB41FB61FB71FBE1FC2-1FC41FC61FC71FD0-1FD31FD61FD71FE0-1FE71FF2-1FF41FF61FF7210A210E210F2113212F21342139213C213D2146-2149214E21842C30-2C5E2C612C652C662C682C6A2C6C2C712C732C742C76-2C7C2C812C832C852C872C892C8B2C8D2C8F2C912C932C952C972C992C9B2C9D2C9F2CA12CA32CA52CA72CA92CAB2CAD2CAF2CB12CB32CB52CB72CB92CBB2CBD2CBF2CC12CC32CC52CC72CC92CCB2CCD2CCF2CD12CD32CD52CD72CD92CDB2CDD2CDF2CE12CE32CE42CEC2CEE2D00-2D25A641A643A645A647A649A64BA64DA64FA651A653A655A657A659A65BA65DA65FA663A665A667A669A66BA66DA681A683A685A687A689A68BA68DA68FA691A693A695A697A723A725A727A729A72BA72DA72F-A731A733A735A737A739A73BA73DA73FA741A743A745A747A749A74BA74DA74FA751A753A755A757A759A75BA75DA75FA761A763A765A767A769A76BA76DA76FA771-A778A77AA77CA77FA781A783A785A787A78CFB00-FB06FB13-FB17FF41-FF5A",Lu:"0041-005A00C0-00D600D8-00DE01000102010401060108010A010C010E01100112011401160118011A011C011E01200122012401260128012A012C012E01300132013401360139013B013D013F0141014301450147014A014C014E01500152015401560158015A015C015E01600162016401660168016A016C016E017001720174017601780179017B017D018101820184018601870189-018B018E-0191019301940196-0198019C019D019F01A001A201A401A601A701A901AC01AE01AF01B1-01B301B501B701B801BC01C401C701CA01CD01CF01D101D301D501D701D901DB01DE01E001E201E401E601E801EA01EC01EE01F101F401F6-01F801FA01FC01FE02000202020402060208020A020C020E02100212021402160218021A021C021E02200222022402260228022A022C022E02300232023A023B023D023E02410243-02460248024A024C024E03700372037603860388-038A038C038E038F0391-03A103A3-03AB03CF03D2-03D403D803DA03DC03DE03E003E203E403E603E803EA03EC03EE03F403F703F903FA03FD-042F04600462046404660468046A046C046E04700472047404760478047A047C047E0480048A048C048E04900492049404960498049A049C049E04A004A204A404A604A804AA04AC04AE04B004B204B404B604B804BA04BC04BE04C004C104C304C504C704C904CB04CD04D004D204D404D604D804DA04DC04DE04E004E204E404E604E804EA04EC04EE04F004F204F404F604F804FA04FC04FE05000502050405060508050A050C050E05100512051405160518051A051C051E0520052205240531-055610A0-10C51E001E021E041E061E081E0A1E0C1E0E1E101E121E141E161E181E1A1E1C1E1E1E201E221E241E261E281E2A1E2C1E2E1E301E321E341E361E381E3A1E3C1E3E1E401E421E441E461E481E4A1E4C1E4E1E501E521E541E561E581E5A1E5C1E5E1E601E621E641E661E681E6A1E6C1E6E1E701E721E741E761E781E7A1E7C1E7E1E801E821E841E861E881E8A1E8C1E8E1E901E921E941E9E1EA01EA21EA41EA61EA81EAA1EAC1EAE1EB01EB21EB41EB61EB81EBA1EBC1EBE1EC01EC21EC41EC61EC81ECA1ECC1ECE1ED01ED21ED41ED61ED81EDA1EDC1EDE1EE01EE21EE41EE61EE81EEA1EEC1EEE1EF01EF21EF41EF61EF81EFA1EFC1EFE1F08-1F0F1F18-1F1D1F28-1F2F1F38-1F3F1F48-1F4D1F591F5B1F5D1F5F1F68-1F6F1FB8-1FBB1FC8-1FCB1FD8-1FDB1FE8-1FEC1FF8-1FFB21022107210B-210D2110-211221152119-211D212421262128212A-212D2130-2133213E213F214521832C00-2C2E2C602C62-2C642C672C692C6B2C6D-2C702C722C752C7E-2C802C822C842C862C882C8A2C8C2C8E2C902C922C942C962C982C9A2C9C2C9E2CA02CA22CA42CA62CA82CAA2CAC2CAE2CB02CB22CB42CB62CB82CBA2CBC2CBE2CC02CC22CC42CC62CC82CCA2CCC2CCE2CD02CD22CD42CD62CD82CDA2CDC2CDE2CE02CE22CEB2CEDA640A642A644A646A648A64AA64CA64EA650A652A654A656A658A65AA65CA65EA662A664A666A668A66AA66CA680A682A684A686A688A68AA68CA68EA690A692A694A696A722A724A726A728A72AA72CA72EA732A734A736A738A73AA73CA73EA740A742A744A746A748A74AA74CA74EA750A752A754A756A758A75AA75CA75EA760A762A764A766A768A76AA76CA76EA779A77BA77DA77EA780A782A784A786A78BFF21-FF3A",Lt:"01C501C801CB01F21F88-1F8F1F98-1F9F1FA8-1FAF1FBC1FCC1FFC",Lm:"02B0-02C102C6-02D102E0-02E402EC02EE0374037A0559064006E506E607F407F507FA081A0824082809710E460EC610FC17D718431AA71C78-1C7D1D2C-1D611D781D9B-1DBF2071207F2090-20942C7D2D6F2E2F30053031-3035303B309D309E30FC-30FEA015A4F8-A4FDA60CA67FA717-A71FA770A788A9CFAA70AADDFF70FF9EFF9F",Lo:"01BB01C0-01C3029405D0-05EA05F0-05F20621-063F0641-064A066E066F0671-06D306D506EE06EF06FA-06FC06FF07100712-072F074D-07A507B107CA-07EA0800-08150904-0939093D09500958-096109720979-097F0985-098C098F09900993-09A809AA-09B009B209B6-09B909BD09CE09DC09DD09DF-09E109F009F10A05-0A0A0A0F0A100A13-0A280A2A-0A300A320A330A350A360A380A390A59-0A5C0A5E0A72-0A740A85-0A8D0A8F-0A910A93-0AA80AAA-0AB00AB20AB30AB5-0AB90ABD0AD00AE00AE10B05-0B0C0B0F0B100B13-0B280B2A-0B300B320B330B35-0B390B3D0B5C0B5D0B5F-0B610B710B830B85-0B8A0B8E-0B900B92-0B950B990B9A0B9C0B9E0B9F0BA30BA40BA8-0BAA0BAE-0BB90BD00C05-0C0C0C0E-0C100C12-0C280C2A-0C330C35-0C390C3D0C580C590C600C610C85-0C8C0C8E-0C900C92-0CA80CAA-0CB30CB5-0CB90CBD0CDE0CE00CE10D05-0D0C0D0E-0D100D12-0D280D2A-0D390D3D0D600D610D7A-0D7F0D85-0D960D9A-0DB10DB3-0DBB0DBD0DC0-0DC60E01-0E300E320E330E40-0E450E810E820E840E870E880E8A0E8D0E94-0E970E99-0E9F0EA1-0EA30EA50EA70EAA0EAB0EAD-0EB00EB20EB30EBD0EC0-0EC40EDC0EDD0F000F40-0F470F49-0F6C0F88-0F8B1000-102A103F1050-1055105A-105D106110651066106E-10701075-1081108E10D0-10FA1100-1248124A-124D1250-12561258125A-125D1260-1288128A-128D1290-12B012B2-12B512B8-12BE12C012C2-12C512C8-12D612D8-13101312-13151318-135A1380-138F13A0-13F41401-166C166F-167F1681-169A16A0-16EA1700-170C170E-17111720-17311740-17511760-176C176E-17701780-17B317DC1820-18421844-18771880-18A818AA18B0-18F51900-191C1950-196D1970-19741980-19AB19C1-19C71A00-1A161A20-1A541B05-1B331B45-1B4B1B83-1BA01BAE1BAF1C00-1C231C4D-1C4F1C5A-1C771CE9-1CEC1CEE-1CF12135-21382D30-2D652D80-2D962DA0-2DA62DA8-2DAE2DB0-2DB62DB8-2DBE2DC0-2DC62DC8-2DCE2DD0-2DD62DD8-2DDE3006303C3041-3096309F30A1-30FA30FF3105-312D3131-318E31A0-31B731F0-31FF3400-4DB54E00-9FCBA000-A014A016-A48CA4D0-A4F7A500-A60BA610-A61FA62AA62BA66EA6A0-A6E5A7FB-A801A803-A805A807-A80AA80C-A822A840-A873A882-A8B3A8F2-A8F7A8FBA90A-A925A930-A946A960-A97CA984-A9B2AA00-AA28AA40-AA42AA44-AA4BAA60-AA6FAA71-AA76AA7AAA80-AAAFAAB1AAB5AAB6AAB9-AABDAAC0AAC2AADBAADCABC0-ABE2AC00-D7A3D7B0-D7C6D7CB-D7FBF900-FA2DFA30-FA6DFA70-FAD9FB1DFB1F-FB28FB2A-FB36FB38-FB3CFB3EFB40FB41FB43FB44FB46-FBB1FBD3-FD3DFD50-FD8FFD92-FDC7FDF0-FDFBFE70-FE74FE76-FEFCFF66-FF6FFF71-FF9DFFA0-FFBEFFC2-FFC7FFCA-FFCFFFD2-FFD7FFDA-FFDC",M:"0300-036F0483-04890591-05BD05BF05C105C205C405C505C70610-061A064B-065E067006D6-06DC06DE-06E406E706E806EA-06ED07110730-074A07A6-07B007EB-07F30816-0819081B-08230825-08270829-082D0900-0903093C093E-094E0951-0955096209630981-098309BC09BE-09C409C709C809CB-09CD09D709E209E30A01-0A030A3C0A3E-0A420A470A480A4B-0A4D0A510A700A710A750A81-0A830ABC0ABE-0AC50AC7-0AC90ACB-0ACD0AE20AE30B01-0B030B3C0B3E-0B440B470B480B4B-0B4D0B560B570B620B630B820BBE-0BC20BC6-0BC80BCA-0BCD0BD70C01-0C030C3E-0C440C46-0C480C4A-0C4D0C550C560C620C630C820C830CBC0CBE-0CC40CC6-0CC80CCA-0CCD0CD50CD60CE20CE30D020D030D3E-0D440D46-0D480D4A-0D4D0D570D620D630D820D830DCA0DCF-0DD40DD60DD8-0DDF0DF20DF30E310E34-0E3A0E47-0E4E0EB10EB4-0EB90EBB0EBC0EC8-0ECD0F180F190F350F370F390F3E0F3F0F71-0F840F860F870F90-0F970F99-0FBC0FC6102B-103E1056-1059105E-10601062-10641067-106D1071-10741082-108D108F109A-109D135F1712-17141732-1734175217531772177317B6-17D317DD180B-180D18A91920-192B1930-193B19B0-19C019C819C91A17-1A1B1A55-1A5E1A60-1A7C1A7F1B00-1B041B34-1B441B6B-1B731B80-1B821BA1-1BAA1C24-1C371CD0-1CD21CD4-1CE81CED1CF21DC0-1DE61DFD-1DFF20D0-20F02CEF-2CF12DE0-2DFF302A-302F3099309AA66F-A672A67CA67DA6F0A6F1A802A806A80BA823-A827A880A881A8B4-A8C4A8E0-A8F1A926-A92DA947-A953A980-A983A9B3-A9C0AA29-AA36AA43AA4CAA4DAA7BAAB0AAB2-AAB4AAB7AAB8AABEAABFAAC1ABE3-ABEAABECABEDFB1EFE00-FE0FFE20-FE26",Mn:"0300-036F0483-04870591-05BD05BF05C105C205C405C505C70610-061A064B-065E067006D6-06DC06DF-06E406E706E806EA-06ED07110730-074A07A6-07B007EB-07F30816-0819081B-08230825-08270829-082D0900-0902093C0941-0948094D0951-095509620963098109BC09C1-09C409CD09E209E30A010A020A3C0A410A420A470A480A4B-0A4D0A510A700A710A750A810A820ABC0AC1-0AC50AC70AC80ACD0AE20AE30B010B3C0B3F0B41-0B440B4D0B560B620B630B820BC00BCD0C3E-0C400C46-0C480C4A-0C4D0C550C560C620C630CBC0CBF0CC60CCC0CCD0CE20CE30D41-0D440D4D0D620D630DCA0DD2-0DD40DD60E310E34-0E3A0E47-0E4E0EB10EB4-0EB90EBB0EBC0EC8-0ECD0F180F190F350F370F390F71-0F7E0F80-0F840F860F870F90-0F970F99-0FBC0FC6102D-10301032-10371039103A103D103E10581059105E-10601071-1074108210851086108D109D135F1712-17141732-1734175217531772177317B7-17BD17C617C9-17D317DD180B-180D18A91920-19221927192819321939-193B1A171A181A561A58-1A5E1A601A621A65-1A6C1A73-1A7C1A7F1B00-1B031B341B36-1B3A1B3C1B421B6B-1B731B801B811BA2-1BA51BA81BA91C2C-1C331C361C371CD0-1CD21CD4-1CE01CE2-1CE81CED1DC0-1DE61DFD-1DFF20D0-20DC20E120E5-20F02CEF-2CF12DE0-2DFF302A-302F3099309AA66FA67CA67DA6F0A6F1A802A806A80BA825A826A8C4A8E0-A8F1A926-A92DA947-A951A980-A982A9B3A9B6-A9B9A9BCAA29-AA2EAA31AA32AA35AA36AA43AA4CAAB0AAB2-AAB4AAB7AAB8AABEAABFAAC1ABE5ABE8ABEDFB1EFE00-FE0FFE20-FE26",Mc:"0903093E-09400949-094C094E0982098309BE-09C009C709C809CB09CC09D70A030A3E-0A400A830ABE-0AC00AC90ACB0ACC0B020B030B3E0B400B470B480B4B0B4C0B570BBE0BBF0BC10BC20BC6-0BC80BCA-0BCC0BD70C01-0C030C41-0C440C820C830CBE0CC0-0CC40CC70CC80CCA0CCB0CD50CD60D020D030D3E-0D400D46-0D480D4A-0D4C0D570D820D830DCF-0DD10DD8-0DDF0DF20DF30F3E0F3F0F7F102B102C10311038103B103C105610571062-10641067-106D108310841087-108C108F109A-109C17B617BE-17C517C717C81923-19261929-192B193019311933-193819B0-19C019C819C91A19-1A1B1A551A571A611A631A641A6D-1A721B041B351B3B1B3D-1B411B431B441B821BA11BA61BA71BAA1C24-1C2B1C341C351CE11CF2A823A824A827A880A881A8B4-A8C3A952A953A983A9B4A9B5A9BAA9BBA9BD-A9C0AA2FAA30AA33AA34AA4DAA7BABE3ABE4ABE6ABE7ABE9ABEAABEC",Me:"0488048906DE20DD-20E020E2-20E4A670-A672",N:"0030-003900B200B300B900BC-00BE0660-066906F0-06F907C0-07C90966-096F09E6-09EF09F4-09F90A66-0A6F0AE6-0AEF0B66-0B6F0BE6-0BF20C66-0C6F0C78-0C7E0CE6-0CEF0D66-0D750E50-0E590ED0-0ED90F20-0F331040-10491090-10991369-137C16EE-16F017E0-17E917F0-17F91810-18191946-194F19D0-19DA1A80-1A891A90-1A991B50-1B591BB0-1BB91C40-1C491C50-1C5920702074-20792080-20892150-21822185-21892460-249B24EA-24FF2776-27932CFD30073021-30293038-303A3192-31953220-32293251-325F3280-328932B1-32BFA620-A629A6E6-A6EFA830-A835A8D0-A8D9A900-A909A9D0-A9D9AA50-AA59ABF0-ABF9FF10-FF19",Nd:"0030-00390660-066906F0-06F907C0-07C90966-096F09E6-09EF0A66-0A6F0AE6-0AEF0B66-0B6F0BE6-0BEF0C66-0C6F0CE6-0CEF0D66-0D6F0E50-0E590ED0-0ED90F20-0F291040-10491090-109917E0-17E91810-18191946-194F19D0-19DA1A80-1A891A90-1A991B50-1B591BB0-1BB91C40-1C491C50-1C59A620-A629A8D0-A8D9A900-A909A9D0-A9D9AA50-AA59ABF0-ABF9FF10-FF19",Nl:"16EE-16F02160-21822185-218830073021-30293038-303AA6E6-A6EF",No:"00B200B300B900BC-00BE09F4-09F90BF0-0BF20C78-0C7E0D70-0D750F2A-0F331369-137C17F0-17F920702074-20792080-20892150-215F21892460-249B24EA-24FF2776-27932CFD3192-31953220-32293251-325F3280-328932B1-32BFA830-A835",P:"0021-00230025-002A002C-002F003A003B003F0040005B-005D005F007B007D00A100AB00B700BB00BF037E0387055A-055F0589058A05BE05C005C305C605F305F40609060A060C060D061B061E061F066A-066D06D40700-070D07F7-07F90830-083E0964096509700DF40E4F0E5A0E5B0F04-0F120F3A-0F3D0F850FD0-0FD4104A-104F10FB1361-13681400166D166E169B169C16EB-16ED1735173617D4-17D617D8-17DA1800-180A1944194519DE19DF1A1E1A1F1AA0-1AA61AA8-1AAD1B5A-1B601C3B-1C3F1C7E1C7F1CD32010-20272030-20432045-20512053-205E207D207E208D208E2329232A2768-277527C527C627E6-27EF2983-299829D8-29DB29FC29FD2CF9-2CFC2CFE2CFF2E00-2E2E2E302E313001-30033008-30113014-301F3030303D30A030FBA4FEA4FFA60D-A60FA673A67EA6F2-A6F7A874-A877A8CEA8CFA8F8-A8FAA92EA92FA95FA9C1-A9CDA9DEA9DFAA5C-AA5FAADEAADFABEBFD3EFD3FFE10-FE19FE30-FE52FE54-FE61FE63FE68FE6AFE6BFF01-FF03FF05-FF0AFF0C-FF0FFF1AFF1BFF1FFF20FF3B-FF3DFF3FFF5BFF5DFF5F-FF65",Pd:"002D058A05BE140018062010-20152E172E1A301C303030A0FE31FE32FE58FE63FF0D",Ps:"0028005B007B0F3A0F3C169B201A201E2045207D208D23292768276A276C276E27702772277427C527E627E827EA27EC27EE2983298529872989298B298D298F299129932995299729D829DA29FC2E222E242E262E283008300A300C300E3010301430163018301A301DFD3EFE17FE35FE37FE39FE3BFE3DFE3FFE41FE43FE47FE59FE5BFE5DFF08FF3BFF5BFF5FFF62",Pe:"0029005D007D0F3B0F3D169C2046207E208E232A2769276B276D276F27712773277527C627E727E927EB27ED27EF298429862988298A298C298E2990299229942996299829D929DB29FD2E232E252E272E293009300B300D300F3011301530173019301B301E301FFD3FFE18FE36FE38FE3AFE3CFE3EFE40FE42FE44FE48FE5AFE5CFE5EFF09FF3DFF5DFF60FF63",Pi:"00AB2018201B201C201F20392E022E042E092E0C2E1C2E20",Pf:"00BB2019201D203A2E032E052E0A2E0D2E1D2E21",Pc:"005F203F20402054FE33FE34FE4D-FE4FFF3F",Po:"0021-00230025-0027002A002C002E002F003A003B003F0040005C00A100B700BF037E0387055A-055F058905C005C305C605F305F40609060A060C060D061B061E061F066A-066D06D40700-070D07F7-07F90830-083E0964096509700DF40E4F0E5A0E5B0F04-0F120F850FD0-0FD4104A-104F10FB1361-1368166D166E16EB-16ED1735173617D4-17D617D8-17DA1800-18051807-180A1944194519DE19DF1A1E1A1F1AA0-1AA61AA8-1AAD1B5A-1B601C3B-1C3F1C7E1C7F1CD3201620172020-20272030-2038203B-203E2041-20432047-205120532055-205E2CF9-2CFC2CFE2CFF2E002E012E06-2E082E0B2E0E-2E162E182E192E1B2E1E2E1F2E2A-2E2E2E302E313001-3003303D30FBA4FEA4FFA60D-A60FA673A67EA6F2-A6F7A874-A877A8CEA8CFA8F8-A8FAA92EA92FA95FA9C1-A9CDA9DEA9DFAA5C-AA5FAADEAADFABEBFE10-FE16FE19FE30FE45FE46FE49-FE4CFE50-FE52FE54-FE57FE5F-FE61FE68FE6AFE6BFF01-FF03FF05-FF07FF0AFF0CFF0EFF0FFF1AFF1BFF1FFF20FF3CFF61FF64FF65",S:"0024002B003C-003E005E0060007C007E00A2-00A900AC00AE-00B100B400B600B800D700F702C2-02C502D2-02DF02E5-02EB02ED02EF-02FF03750384038503F604820606-0608060B060E060F06E906FD06FE07F609F209F309FA09FB0AF10B700BF3-0BFA0C7F0CF10CF20D790E3F0F01-0F030F13-0F170F1A-0F1F0F340F360F380FBE-0FC50FC7-0FCC0FCE0FCF0FD5-0FD8109E109F13601390-139917DB194019E0-19FF1B61-1B6A1B74-1B7C1FBD1FBF-1FC11FCD-1FCF1FDD-1FDF1FED-1FEF1FFD1FFE20442052207A-207C208A-208C20A0-20B8210021012103-21062108210921142116-2118211E-2123212521272129212E213A213B2140-2144214A-214D214F2190-2328232B-23E82400-24262440-244A249C-24E92500-26CD26CF-26E126E326E8-26FF2701-27042706-2709270C-27272729-274B274D274F-27522756-275E2761-276727942798-27AF27B1-27BE27C0-27C427C7-27CA27CC27D0-27E527F0-29822999-29D729DC-29FB29FE-2B4C2B50-2B592CE5-2CEA2E80-2E992E9B-2EF32F00-2FD52FF0-2FFB300430123013302030363037303E303F309B309C319031913196-319F31C0-31E33200-321E322A-32503260-327F328A-32B032C0-32FE3300-33FF4DC0-4DFFA490-A4C6A700-A716A720A721A789A78AA828-A82BA836-A839AA77-AA79FB29FDFCFDFDFE62FE64-FE66FE69FF04FF0BFF1C-FF1EFF3EFF40FF5CFF5EFFE0-FFE6FFE8-FFEEFFFCFFFD",Sm:"002B003C-003E007C007E00AC00B100D700F703F60606-060820442052207A-207C208A-208C2140-2144214B2190-2194219A219B21A021A321A621AE21CE21CF21D221D421F4-22FF2308-230B23202321237C239B-23B323DC-23E125B725C125F8-25FF266F27C0-27C427C7-27CA27CC27D0-27E527F0-27FF2900-29822999-29D729DC-29FB29FE-2AFF2B30-2B442B47-2B4CFB29FE62FE64-FE66FF0BFF1C-FF1EFF5CFF5EFFE2FFE9-FFEC",Sc:"002400A2-00A5060B09F209F309FB0AF10BF90E3F17DB20A0-20B8A838FDFCFE69FF04FFE0FFE1FFE5FFE6",Sk:"005E006000A800AF00B400B802C2-02C502D2-02DF02E5-02EB02ED02EF-02FF0375038403851FBD1FBF-1FC11FCD-1FCF1FDD-1FDF1FED-1FEF1FFD1FFE309B309CA700-A716A720A721A789A78AFF3EFF40FFE3",So:"00A600A700A900AE00B000B60482060E060F06E906FD06FE07F609FA0B700BF3-0BF80BFA0C7F0CF10CF20D790F01-0F030F13-0F170F1A-0F1F0F340F360F380FBE-0FC50FC7-0FCC0FCE0FCF0FD5-0FD8109E109F13601390-1399194019E0-19FF1B61-1B6A1B74-1B7C210021012103-21062108210921142116-2118211E-2123212521272129212E213A213B214A214C214D214F2195-2199219C-219F21A121A221A421A521A7-21AD21AF-21CD21D021D121D321D5-21F32300-2307230C-231F2322-2328232B-237B237D-239A23B4-23DB23E2-23E82400-24262440-244A249C-24E92500-25B625B8-25C025C2-25F72600-266E2670-26CD26CF-26E126E326E8-26FF2701-27042706-2709270C-27272729-274B274D274F-27522756-275E2761-276727942798-27AF27B1-27BE2800-28FF2B00-2B2F2B452B462B50-2B592CE5-2CEA2E80-2E992E9B-2EF32F00-2FD52FF0-2FFB300430123013302030363037303E303F319031913196-319F31C0-31E33200-321E322A-32503260-327F328A-32B032C0-32FE3300-33FF4DC0-4DFFA490-A4C6A828-A82BA836A837A839AA77-AA79FDFDFFE4FFE8FFEDFFEEFFFCFFFD",Z:"002000A01680180E2000-200A20282029202F205F3000",Zs:"002000A01680180E2000-200A202F205F3000",Zl:"2028",Zp:"2029",C:"0000-001F007F-009F00AD03780379037F-0383038B038D03A20526-05300557055805600588058B-059005C8-05CF05EB-05EF05F5-0605061C061D0620065F06DD070E070F074B074C07B2-07BF07FB-07FF082E082F083F-08FF093A093B094F095609570973-097809800984098D098E0991099209A909B109B3-09B509BA09BB09C509C609C909CA09CF-09D609D8-09DB09DE09E409E509FC-0A000A040A0B-0A0E0A110A120A290A310A340A370A3A0A3B0A3D0A43-0A460A490A4A0A4E-0A500A52-0A580A5D0A5F-0A650A76-0A800A840A8E0A920AA90AB10AB40ABA0ABB0AC60ACA0ACE0ACF0AD1-0ADF0AE40AE50AF00AF2-0B000B040B0D0B0E0B110B120B290B310B340B3A0B3B0B450B460B490B4A0B4E-0B550B58-0B5B0B5E0B640B650B72-0B810B840B8B-0B8D0B910B96-0B980B9B0B9D0BA0-0BA20BA5-0BA70BAB-0BAD0BBA-0BBD0BC3-0BC50BC90BCE0BCF0BD1-0BD60BD8-0BE50BFB-0C000C040C0D0C110C290C340C3A-0C3C0C450C490C4E-0C540C570C5A-0C5F0C640C650C70-0C770C800C810C840C8D0C910CA90CB40CBA0CBB0CC50CC90CCE-0CD40CD7-0CDD0CDF0CE40CE50CF00CF3-0D010D040D0D0D110D290D3A-0D3C0D450D490D4E-0D560D58-0D5F0D640D650D76-0D780D800D810D840D97-0D990DB20DBC0DBE0DBF0DC7-0DC90DCB-0DCE0DD50DD70DE0-0DF10DF5-0E000E3B-0E3E0E5C-0E800E830E850E860E890E8B0E8C0E8E-0E930E980EA00EA40EA60EA80EA90EAC0EBA0EBE0EBF0EC50EC70ECE0ECF0EDA0EDB0EDE-0EFF0F480F6D-0F700F8C-0F8F0F980FBD0FCD0FD9-0FFF10C6-10CF10FD-10FF1249124E124F12571259125E125F1289128E128F12B112B612B712BF12C112C612C712D7131113161317135B-135E137D-137F139A-139F13F5-13FF169D-169F16F1-16FF170D1715-171F1737-173F1754-175F176D17711774-177F17B417B517DE17DF17EA-17EF17FA-17FF180F181A-181F1878-187F18AB-18AF18F6-18FF191D-191F192C-192F193C-193F1941-1943196E196F1975-197F19AC-19AF19CA-19CF19DB-19DD1A1C1A1D1A5F1A7D1A7E1A8A-1A8F1A9A-1A9F1AAE-1AFF1B4C-1B4F1B7D-1B7F1BAB-1BAD1BBA-1BFF1C38-1C3A1C4A-1C4C1C80-1CCF1CF3-1CFF1DE7-1DFC1F161F171F1E1F1F1F461F471F4E1F4F1F581F5A1F5C1F5E1F7E1F7F1FB51FC51FD41FD51FDC1FF01FF11FF51FFF200B-200F202A-202E2060-206F20722073208F2095-209F20B9-20CF20F1-20FF218A-218F23E9-23FF2427-243F244B-245F26CE26E226E4-26E727002705270A270B2728274C274E2753-2755275F27602795-279727B027BF27CB27CD-27CF2B4D-2B4F2B5A-2BFF2C2F2C5F2CF2-2CF82D26-2D2F2D66-2D6E2D70-2D7F2D97-2D9F2DA72DAF2DB72DBF2DC72DCF2DD72DDF2E32-2E7F2E9A2EF4-2EFF2FD6-2FEF2FFC-2FFF3040309730983100-3104312E-3130318F31B8-31BF31E4-31EF321F32FF4DB6-4DBF9FCC-9FFFA48D-A48FA4C7-A4CFA62C-A63FA660A661A674-A67BA698-A69FA6F8-A6FFA78D-A7FAA82C-A82FA83A-A83FA878-A87FA8C5-A8CDA8DA-A8DFA8FC-A8FFA954-A95EA97D-A97FA9CEA9DA-A9DDA9E0-A9FFAA37-AA3FAA4EAA4FAA5AAA5BAA7C-AA7FAAC3-AADAAAE0-ABBFABEEABEFABFA-ABFFD7A4-D7AFD7C7-D7CAD7FC-F8FFFA2EFA2FFA6EFA6FFADA-FAFFFB07-FB12FB18-FB1CFB37FB3DFB3FFB42FB45FBB2-FBD2FD40-FD4FFD90FD91FDC8-FDEFFDFEFDFFFE1A-FE1FFE27-FE2FFE53FE67FE6C-FE6FFE75FEFD-FF00FFBF-FFC1FFC8FFC9FFD0FFD1FFD8FFD9FFDD-FFDFFFE7FFEF-FFFBFFFEFFFF",Cc:"0000-001F007F-009F",Cf:"00AD0600-060306DD070F17B417B5200B-200F202A-202E2060-2064206A-206FFEFFFFF9-FFFB",Co:"E000-F8FF",Cs:"D800-DFFF",Cn:"03780379037F-0383038B038D03A20526-05300557055805600588058B-059005C8-05CF05EB-05EF05F5-05FF06040605061C061D0620065F070E074B074C07B2-07BF07FB-07FF082E082F083F-08FF093A093B094F095609570973-097809800984098D098E0991099209A909B109B3-09B509BA09BB09C509C609C909CA09CF-09D609D8-09DB09DE09E409E509FC-0A000A040A0B-0A0E0A110A120A290A310A340A370A3A0A3B0A3D0A43-0A460A490A4A0A4E-0A500A52-0A580A5D0A5F-0A650A76-0A800A840A8E0A920AA90AB10AB40ABA0ABB0AC60ACA0ACE0ACF0AD1-0ADF0AE40AE50AF00AF2-0B000B040B0D0B0E0B110B120B290B310B340B3A0B3B0B450B460B490B4A0B4E-0B550B58-0B5B0B5E0B640B650B72-0B810B840B8B-0B8D0B910B96-0B980B9B0B9D0BA0-0BA20BA5-0BA70BAB-0BAD0BBA-0BBD0BC3-0BC50BC90BCE0BCF0BD1-0BD60BD8-0BE50BFB-0C000C040C0D0C110C290C340C3A-0C3C0C450C490C4E-0C540C570C5A-0C5F0C640C650C70-0C770C800C810C840C8D0C910CA90CB40CBA0CBB0CC50CC90CCE-0CD40CD7-0CDD0CDF0CE40CE50CF00CF3-0D010D040D0D0D110D290D3A-0D3C0D450D490D4E-0D560D58-0D5F0D640D650D76-0D780D800D810D840D97-0D990DB20DBC0DBE0DBF0DC7-0DC90DCB-0DCE0DD50DD70DE0-0DF10DF5-0E000E3B-0E3E0E5C-0E800E830E850E860E890E8B0E8C0E8E-0E930E980EA00EA40EA60EA80EA90EAC0EBA0EBE0EBF0EC50EC70ECE0ECF0EDA0EDB0EDE-0EFF0F480F6D-0F700F8C-0F8F0F980FBD0FCD0FD9-0FFF10C6-10CF10FD-10FF1249124E124F12571259125E125F1289128E128F12B112B612B712BF12C112C612C712D7131113161317135B-135E137D-137F139A-139F13F5-13FF169D-169F16F1-16FF170D1715-171F1737-173F1754-175F176D17711774-177F17DE17DF17EA-17EF17FA-17FF180F181A-181F1878-187F18AB-18AF18F6-18FF191D-191F192C-192F193C-193F1941-1943196E196F1975-197F19AC-19AF19CA-19CF19DB-19DD1A1C1A1D1A5F1A7D1A7E1A8A-1A8F1A9A-1A9F1AAE-1AFF1B4C-1B4F1B7D-1B7F1BAB-1BAD1BBA-1BFF1C38-1C3A1C4A-1C4C1C80-1CCF1CF3-1CFF1DE7-1DFC1F161F171F1E1F1F1F461F471F4E1F4F1F581F5A1F5C1F5E1F7E1F7F1FB51FC51FD41FD51FDC1FF01FF11FF51FFF2065-206920722073208F2095-209F20B9-20CF20F1-20FF218A-218F23E9-23FF2427-243F244B-245F26CE26E226E4-26E727002705270A270B2728274C274E2753-2755275F27602795-279727B027BF27CB27CD-27CF2B4D-2B4F2B5A-2BFF2C2F2C5F2CF2-2CF82D26-2D2F2D66-2D6E2D70-2D7F2D97-2D9F2DA72DAF2DB72DBF2DC72DCF2DD72DDF2E32-2E7F2E9A2EF4-2EFF2FD6-2FEF2FFC-2FFF3040309730983100-3104312E-3130318F31B8-31BF31E4-31EF321F32FF4DB6-4DBF9FCC-9FFFA48D-A48FA4C7-A4CFA62C-A63FA660A661A674-A67BA698-A69FA6F8-A6FFA78D-A7FAA82C-A82FA83A-A83FA878-A87FA8C5-A8CDA8DA-A8DFA8FC-A8FFA954-A95EA97D-A97FA9CEA9DA-A9DDA9E0-A9FFAA37-AA3FAA4EAA4FAA5AAA5BAA7C-AA7FAAC3-AADAAAE0-ABBFABEEABEFABFA-ABFFD7A4-D7AFD7C7-D7CAD7FC-D7FFFA2EFA2FFA6EFA6FFADA-FAFFFB07-FB12FB18-FB1CFB37FB3DFB3FFB42FB45FBB2-FBD2FD40-FD4FFD90FD91FDC8-FDEFFDFEFDFFFE1A-FE1FFE27-FE2FFE53FE67FE6C-FE6FFE75FEFDFEFEFF00FFBF-FFC1FFC8FFC9FFD0FFD1FFD8FFD9FFDD-FFDFFFE7FFEF-FFF8FFFEFFFF"})}),ace.define("ace/token_iterator",["require","exports","module"],function(e,t,n){"use strict";var r=function(e,t,n){this.$session=e,this.$row=t,this.$rowTokens=e.getTokens(t);var r=e.getTokenAt(t,n);this.$tokenIndex=r?r.index:-1};(function(){this.stepBackward=function(){this.$tokenIndex-=1;while(this.$tokenIndex<0){this.$row-=1;if(this.$row<0)return this.$row=0,null;this.$rowTokens=this.$session.getTokens(this.$row),this.$tokenIndex=this.$rowTokens.length-1}return this.$rowTokens[this.$tokenIndex]},this.stepForward=function(){this.$tokenIndex+=1;var e;while(this.$tokenIndex>=this.$rowTokens.length){this.$row+=1,e||(e=this.$session.getLength());if(this.$row>=e)return this.$row=e-1,null;this.$rowTokens=this.$session.getTokens(this.$row),this.$tokenIndex=0}return this.$rowTokens[this.$tokenIndex]},this.getCurrentToken=function(){return this.$rowTokens[this.$tokenIndex]},this.getCurrentTokenRow=function(){return this.$row},this.getCurrentTokenColumn=function(){var e=this.$rowTokens,t=this.$tokenIndex,n=e[t].start;if(n!==undefined)return n;n=0;while(t>0)t-=1,n+=e[t].value.length;return n}}).call(r.prototype),t.TokenIterator=r}),ace.define("ace/mode/text",["require","exports","module","ace/tokenizer","ace/mode/text_highlight_rules","ace/mode/behaviour","ace/unicode","ace/lib/lang","ace/token_iterator","ace/range"],function(e,t,n){"use strict";var r=e("../tokenizer").Tokenizer,i=e("./text_highlight_rules").TextHighlightRules,s=e("./behaviour").Behaviour,o=e("../unicode"),u=e("../lib/lang"),a=e("../token_iterator").TokenIterator,f=e("../range").Range,l=function(){this.HighlightRules=i,this.$behaviour=new s};(function(){this.tokenRe=new RegExp("^["+o.packages.L+o.packages.Mn+o.packages.Mc+o.packages.Nd+o.packages.Pc+"\\$_]+","g"),this.nonTokenRe=new RegExp("^(?:[^"+o.packages.L+o.packages.Mn+o.packages.Mc+o.packages.Nd+o.packages.Pc+"\\$_]|\\s])+","g"),this.getTokenizer=function(){return this.$tokenizer||(this.$highlightRules=this.$highlightRules||new this.HighlightRules,this.$tokenizer=new r(this.$highlightRules.getRules())),this.$tokenizer},this.lineCommentStart="",this.blockComment="",this.toggleCommentLines=function(e,t,n,r){function w(e){for(var t=n;t<=r;t++)e(i.getLine(t),t)}var i=t.doc,s=!0,o=!0,a=Infinity,f=t.getTabSize(),l=!1;if(!this.lineCommentStart){if(!this.blockComment)return!1;var c=this.blockComment.start,h=this.blockComment.end,p=new RegExp("^(\\s*)(?:"+u.escapeRegExp(c)+")"),d=new RegExp("(?:"+u.escapeRegExp(h)+")\\s*$"),v=function(e,t){if(g(e,t))return;if(!s||/\S/.test(e))i.insertInLine({row:t,column:e.length},h),i.insertInLine({row:t,column:a},c)},m=function(e,t){var n;(n=e.match(d))&&i.removeInLine(t,e.length-n[0].length,e.length),(n=e.match(p))&&i.removeInLine(t,n[1].length,n[0].length)},g=function(e,n){if(p.test(e))return!0;var r=t.getTokens(n);for(var i=0;i<r.length;i++)if(r[i].type==="comment")return!0}}else{if(Array.isArray(this.lineCommentStart))var p=this.lineCommentStart.map(u.escapeRegExp).join("|"),c=this.lineCommentStart[0];else var p=u.escapeRegExp(this.lineCommentStart),c=this.lineCommentStart;p=new RegExp("^(\\s*)(?:"+p+") ?"),l=t.getUseSoftTabs();var m=function(e,t){var n=e.match(p);if(!n)return;var r=n[1].length,s=n[0].length;!b(e,r,s)&&n[0][s-1]==" "&&s--,i.removeInLine(t,r,s)},y=c+" ",v=function(e,t){if(!s||/\S/.test(e))b(e,a,a)?i.insertInLine({row:t,column:a},y):i.insertInLine({row:t,column:a},c)},g=function(e,t){return p.test(e)},b=function(e,t,n){var r=0;while(t--&&e.charAt(t)==" ")r++;if(r%f!=0)return!1;var r=0;while(e.charAt(n++)==" ")r++;return f>2?r%f!=f-1:r%f==0}}var E=Infinity;w(function(e,t){var n=e.search(/\S/);n!==-1?(n<a&&(a=n),o&&!g(e,t)&&(o=!1)):E>e.length&&(E=e.length)}),a==Infinity&&(a=E,s=!1,o=!1),l&&a%f!=0&&(a=Math.floor(a/f)*f),w(o?m:v)},this.toggleBlockComment=function(e,t,n,r){var i=this.blockComment;if(!i)return;!i.start&&i[0]&&(i=i[0]);var s=new a(t,r.row,r.column),o=s.getCurrentToken(),u=t.selection,l=t.selection.toOrientedRange(),c,h;if(o&&/comment/.test(o.type)){var p,d;while(o&&/comment/.test(o.type)){var v=o.value.indexOf(i.start);if(v!=-1){var m=s.getCurrentTokenRow(),g=s.getCurrentTokenColumn()+v;p=new f(m,g,m,g+i.start.length);break}o=s.stepBackward()}var s=new a(t,r.row,r.column),o=s.getCurrentToken();while(o&&/comment/.test(o.type)){var v=o.value.indexOf(i.end);if(v!=-1){var m=s.getCurrentTokenRow(),g=s.getCurrentTokenColumn()+v;d=new f(m,g,m,g+i.end.length);break}o=s.stepForward()}d&&t.remove(d),p&&(t.remove(p),c=p.start.row,h=-i.start.length)}else h=i.start.length,c=n.start.row,t.insert(n.end,i.end),t.insert(n.start,i.start);l.start.row==c&&(l.start.column+=h),l.end.row==c&&(l.end.column+=h),t.selection.fromOrientedRange(l)},this.getNextLineIndent=function(e,t,n){return this.$getIndent(t)},this.checkOutdent=function(e,t,n){return!1},this.autoOutdent=function(e,t,n){},this.$getIndent=function(e){return e.match(/^\s*/)[0]},this.createWorker=function(e){return null},this.createModeDelegates=function(e){this.$embeds=[],this.$modes={};for(var t in e)e[t]&&(this.$embeds.push(t),this.$modes[t]=new e[t]);var n=["toggleBlockComment","toggleCommentLines","getNextLineIndent","checkOutdent","autoOutdent","transformAction","getCompletions"];for(var t=0;t<n.length;t++)(function(e){var r=n[t],i=e[r];e[n[t]]=function(){return this.$delegator(r,arguments,i)}})(this)},this.$delegator=function(e,t,n){var r=t[0];typeof r!="string"&&(r=r[0]);for(var i=0;i<this.$embeds.length;i++){if(!this.$modes[this.$embeds[i]])continue;var s=r.split(this.$embeds[i]);if(!s[0]&&s[1]){t[0]=s[1];var o=this.$modes[this.$embeds[i]];return o[e].apply(o,t)}}var u=n.apply(this,t);return n?u:undefined},this.transformAction=function(e,t,n,r,i){if(this.$behaviour){var s=this.$behaviour.getBehaviours();for(var o in s)if(s[o][t]){var u=s[o][t].apply(this,arguments);if(u)return u}}},this.getKeywords=function(e){if(!this.completionKeywords){var t=this.$tokenizer.rules,n=[];for(var r in t){var i=t[r];for(var s=0,o=i.length;s<o;s++)if(typeof i[s].token=="string")/keyword|support|storage/.test(i[s].token)&&n.push(i[s].regex);else if(typeof i[s].token=="object")for(var u=0,a=i[s].token.length;u<a;u++)if(/keyword|support|storage/.test(i[s].token[u])){var r=i[s].regex.match(/\(.+?\)/g)[u];n.push(r.substr(1,r.length-2))}}this.completionKeywords=n}return e?n.concat(this.$keywordList||[]):this.$keywordList},this.$createKeywordList=function(){return this.$highlightRules||this.getTokenizer(),this.$keywordList=this.$highlightRules.$keywordList||[]},this.getCompletions=function(e,t,n,r){var i=this.$keywordList||this.$createKeywordList();return i.map(function(e){return{name:e,value:e,score:0,meta:"keyword"}})},this.$id="ace/mode/text"}).call(l.prototype),t.Mode=l}),ace.define("ace/anchor",["require","exports","module","ace/lib/oop","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/event_emitter").EventEmitter,s=t.Anchor=function(e,t,n){this.$onChange=this.onChange.bind(this),this.attach(e),typeof n=="undefined"?this.setPosition(t.row,t.column):this.setPosition(t,n)};(function(){r.implement(this,i),this.getPosition=function(){return this.$clipPositionToDocument(this.row,this.column)},this.getDocument=function(){return this.document},this.$insertRight=!1,this.onChange=function(e){var t=e.data,n=t.range;if(n.start.row==n.end.row&&n.start.row!=this.row)return;if(n.start.row>this.row)return;if(n.start.row==this.row&&n.start.column>this.column)return;var r=this.row,i=this.column,s=n.start,o=n.end;if(t.action==="insertText")if(s.row===r&&s.column<=i){if(s.column!==i||!this.$insertRight)s.row===o.row?i+=o.column-s.column:(i-=s.column,r+=o.row-s.row)}else s.row!==o.row&&s.row<r&&(r+=o.row-s.row);else t.action==="insertLines"?(s.row!==r||i!==0||!this.$insertRight)&&s.row<=r&&(r+=o.row-s.row):t.action==="removeText"?s.row===r&&s.column<i?o.column>=i?i=s.column:i=Math.max(0,i-(o.column-s.column)):s.row!==o.row&&s.row<r?(o.row===r&&(i=Math.max(0,i-o.column)+s.column),r-=o.row-s.row):o.row===r&&(r-=o.row-s.row,i=Math.max(0,i-o.column)+s.column):t.action=="removeLines"&&s.row<=r&&(o.row<=r?r-=o.row-s.row:(r=s.row,i=0));this.setPosition(r,i,!0)},this.setPosition=function(e,t,n){var r;n?r={row:e,column:t}:r=this.$clipPositionToDocument(e,t);if(this.row==r.row&&this.column==r.column)return;var i={row:this.row,column:this.column};this.row=r.row,this.column=r.column,this._signal("change",{old:i,value:r})},this.detach=function(){this.document.removeEventListener("change",this.$onChange)},this.attach=function(e){this.document=e||this.document,this.document.on("change",this.$onChange)},this.$clipPositionToDocument=function(e,t){var n={};return e>=this.document.getLength()?(n.row=Math.max(0,this.document.getLength()-1),n.column=this.document.getLine(n.row).length):e<0?(n.row=0,n.column=0):(n.row=e,n.column=Math.min(this.document.getLine(n.row).length,Math.max(0,t))),t<0&&(n.column=0),n}}).call(s.prototype)}),ace.define("ace/document",["require","exports","module","ace/lib/oop","ace/lib/event_emitter","ace/range","ace/anchor"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/event_emitter").EventEmitter,s=e("./range").Range,o=e("./anchor").Anchor,u=function(e){this.$lines=[],e.length===0?this.$lines=[""]:Array.isArray(e)?this._insertLines(0,e):this.insert({row:0,column:0},e)};(function(){r.implement(this,i),this.setValue=function(e){var t=this.getLength();this.remove(new s(0,0,t,this.getLine(t-1).length)),this.insert({row:0,column:0},e)},this.getValue=function(){return this.getAllLines().join(this.getNewLineCharacter())},this.createAnchor=function(e,t){return new o(this,e,t)},"aaa".split(/a/).length===0?this.$split=function(e){return e.replace(/\r\n|\r/g,"\n").split("\n")}:this.$split=function(e){return e.split(/\r\n|\r|\n/)},this.$detectNewLine=function(e){var t=e.match(/^.*?(\r\n|\r|\n)/m);this.$autoNewLine=t?t[1]:"\n",this._signal("changeNewLineMode")},this.getNewLineCharacter=function(){switch(this.$newLineMode){case"windows":return"\r\n";case"unix":return"\n";default:return this.$autoNewLine||"\n"}},this.$autoNewLine="",this.$newLineMode="auto",this.setNewLineMode=function(e){if(this.$newLineMode===e)return;this.$newLineMode=e,this._signal("changeNewLineMode")},this.getNewLineMode=function(){return this.$newLineMode},this.isNewLine=function(e){return e=="\r\n"||e=="\r"||e=="\n"},this.getLine=function(e){return this.$lines[e]||""},this.getLines=function(e,t){return this.$lines.slice(e,t+1)},this.getAllLines=function(){return this.getLines(0,this.getLength())},this.getLength=function(){return this.$lines.length},this.getTextRange=function(e){if(e.start.row==e.end.row)return this.getLine(e.start.row).substring(e.start.column,e.end.column);var t=this.getLines(e.start.row,e.end.row);t[0]=(t[0]||"").substring(e.start.column);var n=t.length-1;return e.end.row-e.start.row==n&&(t[n]=t[n].substring(0,e.end.column)),t.join(this.getNewLineCharacter())},this.$clipPosition=function(e){var t=this.getLength();return e.row>=t?(e.row=Math.max(0,t-1),e.column=this.getLine(t-1).length):e.row<0&&(e.row=0),e},this.insert=function(e,t){if(!t||t.length===0)return e;e=this.$clipPosition(e),this.getLength()<=1&&this.$detectNewLine(t);var n=this.$split(t),r=n.splice(0,1)[0],i=n.length==0?null:n.splice(n.length-1,1)[0];return e=this.insertInLine(e,r),i!==null&&(e=this.insertNewLine(e),e=this._insertLines(e.row,n),e=this.insertInLine(e,i||"")),e},this.insertLines=function(e,t){return e>=this.getLength()?this.insert({row:e,column:0},"\n"+t.join("\n")):this._insertLines(Math.max(e,0),t)},this._insertLines=function(e,t){if(t.length==0)return{row:e,column:0};while(t.length>61440){var n=this._insertLines(e,t.slice(0,61440));t=t.slice(61440),e=n.row}var r=[e,0];r.push.apply(r,t),this.$lines.splice.apply(this.$lines,r);var i=new s(e,0,e+t.length,0),o={action:"insertLines",range:i,lines:t};return this._signal("change",{data:o}),i.end},this.insertNewLine=function(e){e=this.$clipPosition(e);var t=this.$lines[e.row]||"";this.$lines[e.row]=t.substring(0,e.column),this.$lines.splice(e.row+1,0,t.substring(e.column,t.length));var n={row:e.row+1,column:0},r={action:"insertText",range:s.fromPoints(e,n),text:this.getNewLineCharacter()};return this._signal("change",{data:r}),n},this.insertInLine=function(e,t){if(t.length==0)return e;var n=this.$lines[e.row]||"";this.$lines[e.row]=n.substring(0,e.column)+t+n.substring(e.column);var r={row:e.row,column:e.column+t.length},i={action:"insertText",range:s.fromPoints(e,r),text:t};return this._signal("change",{data:i}),r},this.remove=function(e){e instanceof s||(e=s.fromPoints(e.start,e.end)),e.start=this.$clipPosition(e.start),e.end=this.$clipPosition(e.end);if(e.isEmpty())return e.start;var t=e.start.row,n=e.end.row;if(e.isMultiLine()){var r=e.start.column==0?t:t+1,i=n-1;e.end.column>0&&this.removeInLine(n,0,e.end.column),i>=r&&this._removeLines(r,i),r!=t&&(this.removeInLine(t,e.start.column,this.getLine(t).length),this.removeNewLine(e.start.row))}else this.removeInLine(t,e.start.column,e.end.column);return e.start},this.removeInLine=function(e,t,n){if(t==n)return;var r=new s(e,t,e,n),i=this.getLine(e),o=i.substring(t,n),u=i.substring(0,t)+i.substring(n,i.length);this.$lines.splice(e,1,u);var a={action:"removeText",range:r,text:o};return this._signal("change",{data:a}),r.start},this.removeLines=function(e,t){return e<0||t>=this.getLength()?this.remove(new s(e,0,t+1,0)):this._removeLines(e,t)},this._removeLines=function(e,t){var n=new s(e,0,t+1,0),r=this.$lines.splice(e,t-e+1),i={action:"removeLines",range:n,nl:this.getNewLineCharacter(),lines:r};return this._signal("change",{data:i}),r},this.removeNewLine=function(e){var t=this.getLine(e),n=this.getLine(e+1),r=new s(e,t.length,e+1,0),i=t+n;this.$lines.splice(e,2,i);var o={action:"removeText",range:r,text:this.getNewLineCharacter()};this._signal("change",{data:o})},this.replace=function(e,t){e instanceof s||(e=s.fromPoints(e.start,e.end));if(t.length==0&&e.isEmpty())return e.start;if(t==this.getTextRange(e))return e.end;this.remove(e);if(t)var n=this.insert(e.start,t);else n=e.start;return n},this.applyDeltas=function(e){for(var t=0;t<e.length;t++){var n=e[t],r=s.fromPoints(n.range.start,n.range.end);n.action=="insertLines"?this.insertLines(r.start.row,n.lines):n.action=="insertText"?this.insert(r.start,n.text):n.action=="removeLines"?this._removeLines(r.start.row,r.end.row-1):n.action=="removeText"&&this.remove(r)}},this.revertDeltas=function(e){for(var t=e.length-1;t>=0;t--){var n=e[t],r=s.fromPoints(n.range.start,n.range.end);n.action=="insertLines"?this._removeLines(r.start.row,r.end.row-1):n.action=="insertText"?this.remove(r):n.action=="removeLines"?this._insertLines(r.start.row,n.lines):n.action=="removeText"&&this.insert(r.start,n.text)}},this.indexToPosition=function(e,t){var n=this.$lines||this.getAllLines(),r=this.getNewLineCharacter().length;for(var i=t||0,s=n.length;i<s;i++){e-=n[i].length+r;if(e<0)return{row:i,column:e+n[i].length+r}}return{row:s-1,column:n[s-1].length}},this.positionToIndex=function(e,t){var n=this.$lines||this.getAllLines(),r=this.getNewLineCharacter().length,i=0,s=Math.min(e.row,n.length);for(var o=t||0;o<s;++o)i+=n[o].length+r;return i+e.column}}).call(u.prototype),t.Document=u}),ace.define("ace/background_tokenizer",["require","exports","module","ace/lib/oop","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/event_emitter").EventEmitter,s=function(e,t){this.running=!1,this.lines=[],this.states=[],this.currentLine=0,this.tokenizer=e;var n=this;this.$worker=function(){if(!n.running)return;var e=new Date,t=n.currentLine,r=-1,i=n.doc;while(n.lines[t])t++;var s=t,o=i.getLength(),u=0;n.running=!1;while(t<o){n.$tokenizeRow(t),r=t;do t++;while(n.lines[t]);u++;if(u%5==0&&new Date-e>20){n.running=setTimeout(n.$worker,20),n.currentLine=t;return}}n.currentLine=t,s<=r&&n.fireUpdateEvent(s,r)}};(function(){r.implement(this,i),this.setTokenizer=function(e){this.tokenizer=e,this.lines=[],this.states=[],this.start(0)},this.setDocument=function(e){this.doc=e,this.lines=[],this.states=[],this.stop()},this.fireUpdateEvent=function(e,t){var n={first:e,last:t};this._signal("update",{data:n})},this.start=function(e){this.currentLine=Math.min(e||0,this.currentLine,this.doc.getLength()),this.lines.splice(this.currentLine,this.lines.length),this.states.splice(this.currentLine,this.states.length),this.stop(),this.running=setTimeout(this.$worker,700)},this.scheduleStart=function(){this.running||(this.running=setTimeout(this.$worker,700))},this.$updateOnChange=function(e){var t=e.range,n=t.start.row,r=t.end.row-n;if(r===0)this.lines[n]=null;else if(e.action=="removeText"||e.action=="removeLines")this.lines.splice(n,r+1,null),this.states.splice(n,r+1,null);else{var i=Array(r+1);i.unshift(n,1),this.lines.splice.apply(this.lines,i),this.states.splice.apply(this.states,i)}this.currentLine=Math.min(n,this.currentLine,this.doc.getLength()),this.stop()},this.stop=function(){this.running&&clearTimeout(this.running),this.running=!1},this.getTokens=function(e){return this.lines[e]||this.$tokenizeRow(e)},this.getState=function(e){return this.currentLine==e&&this.$tokenizeRow(e),this.states[e]||"start"},this.$tokenizeRow=function(e){var t=this.doc.getLine(e),n=this.states[e-1],r=this.tokenizer.getLineTokens(t,n,e);return this.states[e]+""!=r.state+""?(this.states[e]=r.state,this.lines[e+1]=null,this.currentLine>e+1&&(this.currentLine=e+1)):this.currentLine==e&&(this.currentLine=e+1),this.lines[e]=r.tokens}}).call(s.prototype),t.BackgroundTokenizer=s}),ace.define("ace/search_highlight",["require","exports","module","ace/lib/lang","ace/lib/oop","ace/range"],function(e,t,n){"use strict";var r=e("./lib/lang"),i=e("./lib/oop"),s=e("./range").Range,o=function(e,t,n){this.setRegexp(e),this.clazz=t,this.type=n||"text"};(function(){this.MAX_RANGES=500,this.setRegexp=function(e){if(this.regExp+""==e+"")return;this.regExp=e,this.cache=[]},this.update=function(e,t,n,i){if(!this.regExp)return;var o=i.firstRow,u=i.lastRow;for(var a=o;a<=u;a++){var f=this.cache[a];f==null&&(f=r.getMatchOffsets(n.getLine(a),this.regExp),f.length>this.MAX_RANGES&&(f=f.slice(0,this.MAX_RANGES)),f=f.map(function(e){return new s(a,e.offset,a,e.offset+e.length)}),this.cache[a]=f.length?f:"");for(var l=f.length;l--;)t.drawSingleLineMarker(e,f[l].toScreenRange(n),this.clazz,i)}}}).call(o.prototype),t.SearchHighlight=o}),ace.define("ace/edit_session/fold_line",["require","exports","module","ace/range"],function(e,t,n){"use strict";function i(e,t){this.foldData=e,Array.isArray(t)?this.folds=t:t=this.folds=[t];var n=t[t.length-1];this.range=new r(t[0].start.row,t[0].start.column,n.end.row,n.end.column),this.start=this.range.start,this.end=this.range.end,this.folds.forEach(function(e){e.setFoldLine(this)},this)}var r=e("../range").Range;(function(){this.shiftRow=function(e){this.start.row+=e,this.end.row+=e,this.folds.forEach(function(t){t.start.row+=e,t.end.row+=e})},this.addFold=function(e){if(e.sameRow){if(e.start.row<this.startRow||e.endRow>this.endRow)throw new Error("Can't add a fold to this FoldLine as it has no connection");this.folds.push(e),this.folds.sort(function(e,t){return-e.range.compareEnd(t.start.row,t.start.column)}),this.range.compareEnd(e.start.row,e.start.column)>0?(this.end.row=e.end.row,this.end.column=e.end.column):this.range.compareStart(e.end.row,e.end.column)<0&&(this.start.row=e.start.row,this.start.column=e.start.column)}else if(e.start.row==this.end.row)this.folds.push(e),this.end.row=e.end.row,this.end.column=e.end.column;else{if(e.end.row!=this.start.row)throw new Error("Trying to add fold to FoldRow that doesn't have a matching row");this.folds.unshift(e),this.start.row=e.start.row,this.start.column=e.start.column}e.foldLine=this},this.containsRow=function(e){return e>=this.start.row&&e<=this.end.row},this.walk=function(e,t,n){var r=0,i=this.folds,s,o,u,a=!0;t==null&&(t=this.end.row,n=this.end.column);for(var f=0;f<i.length;f++){s=i[f],o=s.range.compareStart(t,n);if(o==-1){e(null,t,n,r,a);return}u=e(null,s.start.row,s.start.column,r,a),u=!u&&e(s.placeholder,s.start.row,s.start.column,r);if(u||o==0)return;a=!s.sameRow,r=s.end.column}e(null,t,n,r,a)},this.getNextFoldTo=function(e,t){var n,r;for(var i=0;i<this.folds.length;i++){n=this.folds[i],r=n.range.compareEnd(e,t);if(r==-1)return{fold:n,kind:"after"};if(r==0)return{fold:n,kind:"inside"}}return null},this.addRemoveChars=function(e,t,n){var r=this.getNextFoldTo(e,t),i,s;if(r){i=r.fold;if(r.kind=="inside"&&i.start.column!=t&&i.start.row!=e)window.console&&window.console.log(e,t,i);else if(i.start.row==e){s=this.folds;var o=s.indexOf(i);o==0&&(this.start.column+=n);for(o;o<s.length;o++){i=s[o],i.start.column+=n;if(!i.sameRow)return;i.end.column+=n}this.end.column+=n}}},this.split=function(e,t){var n=this.getNextFoldTo(e,t).fold,r=this.folds,s=this.foldData;if(!n)return null;var o=r.indexOf(n),u=r[o-1];this.end.row=u.end.row,this.end.column=u.end.column,r=r.splice(o,r.length-o);var a=new i(s,r);return s.splice(s.indexOf(this)+1,0,a),a},this.merge=function(e){var t=e.folds;for(var n=0;n<t.length;n++)this.addFold(t[n]);var r=this.foldData;r.splice(r.indexOf(e),1)},this.toString=function(){var e=[this.range.toString()+": ["];return this.folds.forEach(function(t){e.push("  "+t.toString())}),e.push("]"),e.join("\n")},this.idxToPosition=function(e){var t=0,n;for(var r=0;r<this.folds.length;r++){var n=this.folds[r];e-=n.start.column-t;if(e<0)return{row:n.start.row,column:n.start.column+e};e-=n.placeholder.length;if(e<0)return n.start;t=n.end.column}return{row:this.end.row,column:this.end.column+e}}}).call(i.prototype),t.FoldLine=i}),ace.define("ace/range_list",["require","exports","module","ace/range"],function(e,t,n){"use strict";var r=e("./range").Range,i=r.comparePoints,s=function(){this.ranges=[]};(function(){this.comparePoints=i,this.pointIndex=function(e,t,n){var r=this.ranges;for(var s=n||0;s<r.length;s++){var o=r[s],u=i(e,o.end);if(u>0)continue;var a=i(e,o.start);return u===0?t&&a!==0?-s-2:s:a>0||a===0&&!t?s:-s-1}return-s-1},this.add=function(e){var t=!e.isEmpty(),n=this.pointIndex(e.start,t);n<0&&(n=-n-1);var r=this.pointIndex(e.end,t,n);return r<0?r=-r-1:r++,this.ranges.splice(n,r-n,e)},this.addList=function(e){var t=[];for(var n=e.length;n--;)t.push.call(t,this.add(e[n]));return t},this.substractPoint=function(e){var t=this.pointIndex(e);if(t>=0)return this.ranges.splice(t,1)},this.merge=function(){var e=[],t=this.ranges;t=t.sort(function(e,t){return i(e.start,t.start)});var n=t[0],r;for(var s=1;s<t.length;s++){r=n,n=t[s];var o=i(r.end,n.start);if(o<0)continue;if(o==0&&!r.isEmpty()&&!n.isEmpty())continue;i(r.end,n.end)<0&&(r.end.row=n.end.row,r.end.column=n.end.column),t.splice(s,1),e.push(n),n=r,s--}return this.ranges=t,e},this.contains=function(e,t){return this.pointIndex({row:e,column:t})>=0},this.containsPoint=function(e){return this.pointIndex(e)>=0},this.rangeAtPoint=function(e){var t=this.pointIndex(e);if(t>=0)return this.ranges[t]},this.clipRows=function(e,t){var n=this.ranges;if(n[0].start.row>t||n[n.length-1].start.row<e)return[];var r=this.pointIndex({row:e,column:0});r<0&&(r=-r-1);var i=this.pointIndex({row:t,column:0},r);i<0&&(i=-i-1);var s=[];for(var o=r;o<i;o++)s.push(n[o]);return s},this.removeAll=function(){return this.ranges.splice(0,this.ranges.length)},this.attach=function(e){this.session&&this.detach(),this.session=e,this.onChange=this.$onChange.bind(this),this.session.on("change",this.onChange)},this.detach=function(){if(!this.session)return;this.session.removeListener("change",this.onChange),this.session=null},this.$onChange=function(e){var t=e.data.range;if(e.data.action[0]=="i")var n=t.start,r=t.end;else var r=t.start,n=t.end;var i=n.row,s=r.row,o=s-i,u=-n.column+r.column,a=this.ranges;for(var f=0,l=a.length;f<l;f++){var c=a[f];if(c.end.row<i)continue;if(c.start.row>i)break;c.start.row==i&&c.start.column>=n.column&&(c.start.column!=n.column||!this.$insertRight)&&(c.start.column+=u,c.start.row+=o);if(c.end.row==i&&c.end.column>=n.column){if(c.end.column==n.column&&this.$insertRight)continue;c.end.column==n.column&&u>0&&f<l-1&&c.end.column>c.start.column&&c.end.column==a[f+1].start.column&&(c.end.column-=u),c.end.column+=u,c.end.row+=o}}if(o!=0&&f<l)for(;f<l;f++){var c=a[f];c.start.row+=o,c.end.row+=o}}}).call(s.prototype),t.RangeList=s}),ace.define("ace/edit_session/fold",["require","exports","module","ace/range","ace/range_list","ace/lib/oop"],function(e,t,n){"use strict";function u(e,t){e.row-=t.row,e.row==0&&(e.column-=t.column)}function a(e,t){u(e.start,t),u(e.end,t)}function f(e,t){e.row==0&&(e.column+=t.column),e.row+=t.row}function l(e,t){f(e.start,t),f(e.end,t)}var r=e("../range").Range,i=e("../range_list").RangeList,s=e("../lib/oop"),o=t.Fold=function(e,t){this.foldLine=null,this.placeholder=t,this.range=e,this.start=e.start,this.end=e.end,this.sameRow=e.start.row==e.end.row,this.subFolds=this.ranges=[]};s.inherits(o,i),function(){this.toString=function(){return'"'+this.placeholder+'" '+this.range.toString()},this.setFoldLine=function(e){this.foldLine=e,this.subFolds.forEach(function(t){t.setFoldLine(e)})},this.clone=function(){var e=this.range.clone(),t=new o(e,this.placeholder);return this.subFolds.forEach(function(e){t.subFolds.push(e.clone())}),t.collapseChildren=this.collapseChildren,t},this.addSubFold=function(e){if(this.range.isEqual(e))return;if(!this.range.containsRange(e))throw new Error("A fold can't intersect already existing fold"+e.range+this.range);a(e,this.start);var t=e.start.row,n=e.start.column;for(var r=0,i=-1;r<this.subFolds.length;r++){i=this.subFolds[r].range.compare(t,n);if(i!=1)break}var s=this.subFolds[r];if(i==0)return s.addSubFold(e);var t=e.range.end.row,n=e.range.end.column;for(var o=r,i=-1;o<this.subFolds.length;o++){i=this.subFolds[o].range.compare(t,n);if(i!=1)break}var u=this.subFolds[o];if(i==0)throw new Error("A fold can't intersect already existing fold"+e.range+this.range);var f=this.subFolds.splice(r,o-r,e);return e.setFoldLine(this.foldLine),e},this.restoreRange=function(e){return l(e,this.start)}}.call(o.prototype)}),ace.define("ace/edit_session/folding",["require","exports","module","ace/range","ace/edit_session/fold_line","ace/edit_session/fold","ace/token_iterator"],function(e,t,n){"use strict";function u(){this.getFoldAt=function(e,t,n){var r=this.getFoldLine(e);if(!r)return null;var i=r.folds;for(var s=0;s<i.length;s++){var o=i[s];if(o.range.contains(e,t)){if(n==1&&o.range.isEnd(e,t))continue;if(n==-1&&o.range.isStart(e,t))continue;return o}}},this.getFoldsInRange=function(e){var t=e.start,n=e.end,r=this.$foldData,i=[];t.column+=1,n.column-=1;for(var s=0;s<r.length;s++){var o=r[s].range.compareRange(e);if(o==2)continue;if(o==-2)break;var u=r[s].folds;for(var a=0;a<u.length;a++){var f=u[a];o=f.range.compareRange(e);if(o==-2)break;if(o==2)continue;if(o==42)break;i.push(f)}}return t.column-=1,n.column+=1,i},this.getFoldsInRangeList=function(e){if(Array.isArray(e)){var t=[];e.forEach(function(e){t=t.concat(this.getFoldsInRange(e))},this)}else var t=this.getFoldsInRange(e);return t},this.getAllFolds=function(){var e=[],t=this.$foldData;for(var n=0;n<t.length;n++)for(var r=0;r<t[n].folds.length;r++)e.push(t[n].folds[r]);return e},this.getFoldStringAt=function(e,t,n,r){r=r||this.getFoldLine(e);if(!r)return null;var i={end:{column:0}},s,o;for(var u=0;u<r.folds.length;u++){o=r.folds[u];var a=o.range.compareEnd(e,t);if(a==-1){s=this.getLine(o.start.row).substring(i.end.column,o.start.column);break}if(a===0)return null;i=o}return s||(s=this.getLine(o.start.row).substring(i.end.column)),n==-1?s.substring(0,t-i.end.column):n==1?s.substring(t-i.end.column):s},this.getFoldLine=function(e,t){var n=this.$foldData,r=0;t&&(r=n.indexOf(t)),r==-1&&(r=0);for(r;r<n.length;r++){var i=n[r];if(i.start.row<=e&&i.end.row>=e)return i;if(i.end.row>e)return null}return null},this.getNextFoldLine=function(e,t){var n=this.$foldData,r=0;t&&(r=n.indexOf(t)),r==-1&&(r=0);for(r;r<n.length;r++){var i=n[r];if(i.end.row>=e)return i}return null},this.getFoldedRowCount=function(e,t){var n=this.$foldData,r=t-e+1;for(var i=0;i<n.length;i++){var s=n[i],o=s.end.row,u=s.start.row;if(o>=t){u<t&&(u>=e?r-=t-u:r=0);break}o>=e&&(u>=e?r-=o-u:r-=o-e+1)}return r},this.$addFoldLine=function(e){return this.$foldData.push(e),this.$foldData.sort(function(e,t){return e.start.row-t.start.row}),e},this.addFold=function(e,t){var n=this.$foldData,r=!1,o;e instanceof s?o=e:(o=new s(t,e),o.collapseChildren=t.collapseChildren),this.$clipRangeToDocument(o.range);var u=o.start.row,a=o.start.column,f=o.end.row,l=o.end.column;if(u<f||u==f&&a<=l-2){var c=this.getFoldAt(u,a,1),h=this.getFoldAt(f,l,-1);if(c&&h==c)return c.addSubFold(o);if(c&&!c.range.isStart(u,a)||h&&!h.range.isEnd(f,l))throw new Error("A fold can't intersect already existing fold"+o.range+c.range);var p=this.getFoldsInRange(o.range);p.length>0&&(this.removeFolds(p),p.forEach(function(e){o.addSubFold(e)}));for(var d=0;d<n.length;d++){var v=n[d];if(f==v.start.row){v.addFold(o),r=!0;break}if(u==v.end.row){v.addFold(o),r=!0;if(!o.sameRow){var m=n[d+1];if(m&&m.start.row==f){v.merge(m);break}}break}if(f<=v.start.row)break}return r||(v=this.$addFoldLine(new i(this.$foldData,o))),this.$useWrapMode?this.$updateWrapData(v.start.row,v.start.row):this.$updateRowLengthCache(v.start.row,v.start.row),this.$modified=!0,this._emit("changeFold",{data:o,action:"add"}),o}throw new Error("The range has to be at least 2 characters width")},this.addFolds=function(e){e.forEach(function(e){this.addFold(e)},this)},this.removeFold=function(e){var t=e.foldLine,n=t.start.row,r=t.end.row,i=this.$foldData,s=t.folds;if(s.length==1)i.splice(i.indexOf(t),1);else if(t.range.isEnd(e.end.row,e.end.column))s.pop(),t.end.row=s[s.length-1].end.row,t.end.column=s[s.length-1].end.column;else if(t.range.isStart(e.start.row,e.start.column))s.shift(),t.start.row=s[0].start.row,t.start.column=s[0].start.column;else if(e.sameRow)s.splice(s.indexOf(e),1);else{var o=t.split(e.start.row,e.start.column);s=o.folds,s.shift(),o.start.row=s[0].start.row,o.start.column=s[0].start.column}this.$updating||(this.$useWrapMode?this.$updateWrapData(n,r):this.$updateRowLengthCache(n,r)),this.$modified=!0,this._emit("changeFold",{data:e,action:"remove"})},this.removeFolds=function(e){var t=[];for(var n=0;n<e.length;n++)t.push(e[n]);t.forEach(function(e){this.removeFold(e)},this),this.$modified=!0},this.expandFold=function(e){this.removeFold(e),e.subFolds.forEach(function(t){e.restoreRange(t),this.addFold(t)},this),e.collapseChildren>0&&this.foldAll(e.start.row+1,e.end.row,e.collapseChildren-1),e.subFolds=[]},this.expandFolds=function(e){e.forEach(function(e){this.expandFold(e)},this)},this.unfold=function(e,t){var n,i;e==null?(n=new r(0,0,this.getLength(),0),t=!0):typeof e=="number"?n=new r(e,0,e,this.getLine(e).length):"row"in e?n=r.fromPoints(e,e):n=e,i=this.getFoldsInRangeList(n);if(t)this.removeFolds(i);else{var s=i;while(s.length)this.expandFolds(s),s=this.getFoldsInRangeList(n)}if(i.length)return i},this.isRowFolded=function(e,t){return!!this.getFoldLine(e,t)},this.getRowFoldEnd=function(e,t){var n=this.getFoldLine(e,t);return n?n.end.row:e},this.getRowFoldStart=function(e,t){var n=this.getFoldLine(e,t);return n?n.start.row:e},this.getFoldDisplayLine=function(e,t,n,r,i){r==null&&(r=e.start.row),i==null&&(i=0),t==null&&(t=e.end.row),n==null&&(n=this.getLine(t).length);var s=this.doc,o="";return e.walk(function(e,t,n,u){if(t<r)return;if(t==r){if(n<i)return;u=Math.max(i,u)}e!=null?o+=e:o+=s.getLine(t).substring(u,n)},t,n),o},this.getDisplayLine=function(e,t,n,r){var i=this.getFoldLine(e);if(!i){var s;return s=this.doc.getLine(e),s.substring(r||0,t||s.length)}return this.getFoldDisplayLine(i,e,t,n,r)},this.$cloneFoldData=function(){var e=[];return e=this.$foldData.map(function(t){var n=t.folds.map(function(e){return e.clone()});return new i(e,n)}),e},this.toggleFold=function(e){var t=this.selection,n=t.getRange(),r,i;if(n.isEmpty()){var s=n.start;r=this.getFoldAt(s.row,s.column);if(r){this.expandFold(r);return}(i=this.findMatchingBracket(s))?n.comparePoint(i)==1?n.end=i:(n.start=i,n.start.column++,n.end.column--):(i=this.findMatchingBracket({row:s.row,column:s.column+1}))?(n.comparePoint(i)==1?n.end=i:n.start=i,n.start.column++):n=this.getCommentFoldRange(s.row,s.column)||n}else{var o=this.getFoldsInRange(n);if(e&&o.length){this.expandFolds(o);return}o.length==1&&(r=o[0])}r||(r=this.getFoldAt(n.start.row,n.start.column));if(r&&r.range.toString()==n.toString()){this.expandFold(r);return}var u="...";if(!n.isMultiLine()){u=this.getTextRange(n);if(u.length<4)return;u=u.trim().substring(0,2)+".."}this.addFold(u,n)},this.getCommentFoldRange=function(e,t,n){var i=new o(this,e,t),s=i.getCurrentToken();if(s&&/^comment|string/.test(s.type)){var u=new r,a=new RegExp(s.type.replace(/\..*/,"\\."));if(n!=1){do s=i.stepBackward();while(s&&a.test(s.type));i.stepForward()}u.start.row=i.getCurrentTokenRow(),u.start.column=i.getCurrentTokenColumn()+2,i=new o(this,e,t);if(n!=-1){do s=i.stepForward();while(s&&a.test(s.type));s=i.stepBackward()}else s=i.getCurrentToken();return u.end.row=i.getCurrentTokenRow(),u.end.column=i.getCurrentTokenColumn()+s.value.length-2,u}},this.foldAll=function(e,t,n){n==undefined&&(n=1e5);var r=this.foldWidgets;if(!r)return;t=t||this.getLength(),e=e||0;for(var i=e;i<t;i++){r[i]==null&&(r[i]=this.getFoldWidget(i));if(r[i]!="start")continue;var s=this.getFoldWidgetRange(i);if(s&&s.isMultiLine()&&s.end.row<=t&&s.start.row>=e){i=s.end.row;try{var o=this.addFold("...",s);o&&(o.collapseChildren=n)}catch(u){}}}},this.$foldStyles={manual:1,markbegin:1,markbeginend:1},this.$foldStyle="markbegin",this.setFoldStyle=function(e){if(!this.$foldStyles[e])throw new Error("invalid fold style: "+e+"["+Object.keys(this.$foldStyles).join(", ")+"]");if(this.$foldStyle==e)return;this.$foldStyle=e,e=="manual"&&this.unfold();var t=this.$foldMode;this.$setFolding(null),this.$setFolding(t)},this.$setFolding=function(e){if(this.$foldMode==e)return;this.$foldMode=e,this.removeListener("change",this.$updateFoldWidgets),this._emit("changeAnnotation");if(!e||this.$foldStyle=="manual"){this.foldWidgets=null;return}this.foldWidgets=[],this.getFoldWidget=e.getFoldWidget.bind(e,this,this.$foldStyle),this.getFoldWidgetRange=e.getFoldWidgetRange.bind(e,this,this.$foldStyle),this.$updateFoldWidgets=this.updateFoldWidgets.bind(this),this.on("change",this.$updateFoldWidgets)},this.getParentFoldRangeData=function(e,t){var n=this.foldWidgets;if(!n||t&&n[e])return{};var r=e-1,i;while(r>=0){var s=n[r];s==null&&(s=n[r]=this.getFoldWidget(r));if(s=="start"){var o=this.getFoldWidgetRange(r);i||(i=o);if(o&&o.end.row>=e)break}r--}return{range:r!==-1&&o,firstRange:i}},this.onFoldWidgetClick=function(e,t){t=t.domEvent;var n={children:t.shiftKey,all:t.ctrlKey||t.metaKey,siblings:t.altKey},r=this.$toggleFoldWidget(e,n);if(!r){var i=t.target||t.srcElement;i&&/ace_fold-widget/.test(i.className)&&(i.className+=" ace_invalid")}},this.$toggleFoldWidget=function(e,t){if(!this.getFoldWidget)return;var n=this.getFoldWidget(e),r=this.getLine(e),i=n==="end"?-1:1,s=this.getFoldAt(e,i===-1?0:r.length,i);if(s){t.children||t.all?this.removeFold(s):this.expandFold(s);return}var o=this.getFoldWidgetRange(e,!0);if(o&&!o.isMultiLine()){s=this.getFoldAt(o.start.row,o.start.column,1);if(s&&o.isEqual(s.range)){this.removeFold(s);return}}if(t.siblings){var u=this.getParentFoldRangeData(e);if(u.range)var a=u.range.start.row+1,f=u.range.end.row;this.foldAll(a,f,t.all?1e4:0)}else t.children?(f=o?o.end.row:this.getLength(),this.foldAll(e+1,o.end.row,t.all?1e4:0)):o&&(t.all&&(o.collapseChildren=1e4),this.addFold("...",o));return o},this.toggleFoldWidget=function(e){var t=this.selection.getCursor().row;t=this.getRowFoldStart(t);var n=this.$toggleFoldWidget(t,{});if(n)return;var r=this.getParentFoldRangeData(t,!0);n=r.range||r.firstRange;if(n){t=n.start.row;var i=this.getFoldAt(t,this.getLine(t).length,1);i?this.removeFold(i):this.addFold("...",n)}},this.updateFoldWidgets=function(e){var t=e.data,n=t.range,r=n.start.row,i=n.end.row-r;if(i===0)this.foldWidgets[r]=null;else if(t.action=="removeText"||t.action=="removeLines")this.foldWidgets.splice(r,i+1,null);else{var s=Array(i+1);s.unshift(r,1),this.foldWidgets.splice.apply(this.foldWidgets,s)}}}var r=e("../range").Range,i=e("./fold_line").FoldLine,s=e("./fold").Fold,o=e("../token_iterator").TokenIterator;t.Folding=u}),ace.define("ace/edit_session/bracket_match",["require","exports","module","ace/token_iterator","ace/range"],function(e,t,n){"use strict";function s(){this.findMatchingBracket=function(e,t){if(e.column==0)return null;var n=t||this.getLine(e.row).charAt(e.column-1);if(n=="")return null;var r=n.match(/([\(\[\{])|([\)\]\}])/);return r?r[1]?this.$findClosingBracket(r[1],e):this.$findOpeningBracket(r[2],e):null},this.getBracketRange=function(e){var t=this.getLine(e.row),n=!0,r,s=t.charAt(e.column-1),o=s&&s.match(/([\(\[\{])|([\)\]\}])/);o||(s=t.charAt(e.column),e={row:e.row,column:e.column+1},o=s&&s.match(/([\(\[\{])|([\)\]\}])/),n=!1);if(!o)return null;if(o[1]){var u=this.$findClosingBracket(o[1],e);if(!u)return null;r=i.fromPoints(e,u),n||(r.end.column++,r.start.column--),r.cursor=r.end}else{var u=this.$findOpeningBracket(o[2],e);if(!u)return null;r=i.fromPoints(u,e),n||(r.start.column++,r.end.column--),r.cursor=r.start}return r},this.$brackets={")":"(","(":")","]":"[","[":"]","{":"}","}":"{"},this.$findOpeningBracket=function(e,t,n){var i=this.$brackets[e],s=1,o=new r(this,t.row,t.column),u=o.getCurrentToken();u||(u=o.stepForward());if(!u)return;n||(n=new RegExp("(\\.?"+u.type.replace(".","\\.").replace("rparen",".paren")+")+"));var a=t.column-o.getCurrentTokenColumn()-2,f=u.value;for(;;){while(a>=0){var l=f.charAt(a);if(l==i){s-=1;if(s==0)return{row:o.getCurrentTokenRow(),column:a+o.getCurrentTokenColumn()}}else l==e&&(s+=1);a-=1}do u=o.stepBackward();while(u&&!n.test(u.type));if(u==null)break;f=u.value,a=f.length-1}return null},this.$findClosingBracket=function(e,t,n){var i=this.$brackets[e],s=1,o=new r(this,t.row,t.column),u=o.getCurrentToken();u||(u=o.stepForward());if(!u)return;n||(n=new RegExp("(\\.?"+u.type.replace(".","\\.").replace("lparen",".paren")+")+"));var a=t.column-o.getCurrentTokenColumn();for(;;){var f=u.value,l=f.length;while(a<l){var c=f.charAt(a);if(c==i){s-=1;if(s==0)return{row:o.getCurrentTokenRow(),column:a+o.getCurrentTokenColumn()}}else c==e&&(s+=1);a+=1}do u=o.stepForward();while(u&&!n.test(u.type));if(u==null)break;a=0}return null}}var r=e("../token_iterator").TokenIterator,i=e("../range").Range;t.BracketMatch=s}),ace.define("ace/edit_session",["require","exports","module","ace/lib/oop","ace/lib/lang","ace/config","ace/lib/event_emitter","ace/selection","ace/mode/text","ace/range","ace/document","ace/background_tokenizer","ace/search_highlight","ace/edit_session/folding","ace/edit_session/bracket_match"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/lang"),s=e("./config"),o=e("./lib/event_emitter").EventEmitter,u=e("./selection").Selection,a=e("./mode/text").Mode,f=e("./range").Range,l=e("./document").Document,c=e("./background_tokenizer").BackgroundTokenizer,h=e("./search_highlight").SearchHighlight,p=function(e,t){this.$breakpoints=[],this.$decorations=[],this.$frontMarkers={},this.$backMarkers={},this.$markerId=1,this.$undoSelect=!0,this.$foldData=[],this.$foldData.toString=function(){return this.join("\n")},this.on("changeFold",this.onChangeFold.bind(this)),this.$onChange=this.onChange.bind(this);if(typeof e!="object"||!e.getLine)e=new l(e);this.setDocument(e),this.selection=new u(this),s.resetOptions(this),this.setMode(t),s._signal("session",this)};(function(){function g(e){return e<4352?!1:e>=4352&&e<=4447||e>=4515&&e<=4519||e>=4602&&e<=4607||e>=9001&&e<=9002||e>=11904&&e<=11929||e>=11931&&e<=12019||e>=12032&&e<=12245||e>=12272&&e<=12283||e>=12288&&e<=12350||e>=12353&&e<=12438||e>=12441&&e<=12543||e>=12549&&e<=12589||e>=12593&&e<=12686||e>=12688&&e<=12730||e>=12736&&e<=12771||e>=12784&&e<=12830||e>=12832&&e<=12871||e>=12880&&e<=13054||e>=13056&&e<=19903||e>=19968&&e<=42124||e>=42128&&e<=42182||e>=43360&&e<=43388||e>=44032&&e<=55203||e>=55216&&e<=55238||e>=55243&&e<=55291||e>=63744&&e<=64255||e>=65040&&e<=65049||e>=65072&&e<=65106||e>=65108&&e<=65126||e>=65128&&e<=65131||e>=65281&&e<=65376||e>=65504&&e<=65510}r.implement(this,o),this.setDocument=function(e){this.doc&&this.doc.removeListener("change",this.$onChange),this.doc=e,e.on("change",this.$onChange),this.bgTokenizer&&this.bgTokenizer.setDocument(this.getDocument()),this.resetCaches()},this.getDocument=function(){return this.doc},this.$resetRowCache=function(e){if(!e){this.$docRowCache=[],this.$screenRowCache=[];return}var t=this.$docRowCache.length,n=this.$getRowCacheIndex(this.$docRowCache,e)+1;t>n&&(this.$docRowCache.splice(n,t),this.$screenRowCache.splice(n,t))},this.$getRowCacheIndex=function(e,t){var n=0,r=e.length-1;while(n<=r){var i=n+r>>1,s=e[i];if(t>s)n=i+1;else{if(!(t<s))return i;r=i-1}}return n-1},this.resetCaches=function(){this.$modified=!0,this.$wrapData=[],this.$rowLengthCache=[],this.$resetRowCache(0),this.bgTokenizer&&this.bgTokenizer.start(0)},this.onChangeFold=function(e){var t=e.data;this.$resetRowCache(t.start.row)},this.onChange=function(e){var t=e.data;this.$modified=!0,this.$resetRowCache(t.range.start.row);var n=this.$updateInternalDataOnChange(e);!this.$fromUndo&&this.$undoManager&&!t.ignore&&(this.$deltasDoc.push(t),n&&n.length!=0&&this.$deltasFold.push({action:"removeFolds",folds:n}),this.$informUndoManager.schedule()),this.bgTokenizer.$updateOnChange(t),this._signal("change",e)},this.setValue=function(e){this.doc.setValue(e),this.selection.moveTo(0,0),this.$resetRowCache(0),this.$deltas=[],this.$deltasDoc=[],this.$deltasFold=[],this.setUndoManager(this.$undoManager),this.getUndoManager().reset()},this.getValue=this.toString=function(){return this.doc.getValue()},this.getSelection=function(){return this.selection},this.getState=function(e){return this.bgTokenizer.getState(e)},this.getTokens=function(e){return this.bgTokenizer.getTokens(e)},this.getTokenAt=function(e,t){var n=this.bgTokenizer.getTokens(e),r,i=0;if(t==null)s=n.length-1,i=this.getLine(e).length;else for(var s=0;s<n.length;s++){i+=n[s].value.length;if(i>=t)break}return r=n[s],r?(r.index=s,r.start=i-r.value.length,r):null},this.setUndoManager=function(e){this.$undoManager=e,this.$deltas=[],this.$deltasDoc=[],this.$deltasFold=[],this.$informUndoManager&&this.$informUndoManager.cancel();if(e){var t=this;this.$syncInformUndoManager=function(){t.$informUndoManager.cancel(),t.$deltasFold.length&&(t.$deltas.push({group:"fold",deltas:t.$deltasFold}),t.$deltasFold=[]),t.$deltasDoc.length&&(t.$deltas.push({group:"doc",deltas:t.$deltasDoc}),t.$deltasDoc=[]),t.$deltas.length>0&&e.execute({action:"aceupdate",args:[t.$deltas,t],merge:t.mergeUndoDeltas}),t.mergeUndoDeltas=!1,t.$deltas=[]},this.$informUndoManager=i.delayedCall(this.$syncInformUndoManager)}},this.markUndoGroup=function(){this.$syncInformUndoManager&&this.$syncInformUndoManager()},this.$defaultUndoManager={undo:function(){},redo:function(){},reset:function(){}},this.getUndoManager=function(){return this.$undoManager||this.$defaultUndoManager},this.getTabString=function(){return this.getUseSoftTabs()?i.stringRepeat(" ",this.getTabSize()):"	"},this.setUseSoftTabs=function(e){this.setOption("useSoftTabs",e)},this.getUseSoftTabs=function(){return this.$useSoftTabs&&!this.$mode.$indentWithTabs},this.setTabSize=function(e){this.setOption("tabSize",e)},this.getTabSize=function(){return this.$tabSize},this.isTabStop=function(e){return this.$useSoftTabs&&e.column%this.$tabSize===0},this.$overwrite=!1,this.setOverwrite=function(e){this.setOption("overwrite",e)},this.getOverwrite=function(){return this.$overwrite},this.toggleOverwrite=function(){this.setOverwrite(!this.$overwrite)},this.addGutterDecoration=function(e,t){this.$decorations[e]||(this.$decorations[e]=""),this.$decorations[e]+=" "+t,this._signal("changeBreakpoint",{})},this.removeGutterDecoration=function(e,t){this.$decorations[e]=(this.$decorations[e]||"").replace(" "+t,""),this._signal("changeBreakpoint",{})},this.getBreakpoints=function(){return this.$breakpoints},this.setBreakpoints=function(e){this.$breakpoints=[];for(var t=0;t<e.length;t++)this.$breakpoints[e[t]]="ace_breakpoint";this._signal("changeBreakpoint",{})},this.clearBreakpoints=function(){this.$breakpoints=[],this._signal("changeBreakpoint",{})},this.setBreakpoint=function(e,t){t===undefined&&(t="ace_breakpoint"),t?this.$breakpoints[e]=t:delete this.$breakpoints[e],this._signal("changeBreakpoint",{})},this.clearBreakpoint=function(e){delete this.$breakpoints[e],this._signal("changeBreakpoint",{})},this.addMarker=function(e,t,n,r){var i=this.$markerId++,s={range:e,type:n||"line",renderer:typeof n=="function"?n:null,clazz:t,inFront:!!r,id:i};return r?(this.$frontMarkers[i]=s,this._signal("changeFrontMarker")):(this.$backMarkers[i]=s,this._signal("changeBackMarker")),i},this.addDynamicMarker=function(e,t){if(!e.update)return;var n=this.$markerId++;return e.id=n,e.inFront=!!t,t?(this.$frontMarkers[n]=e,this._signal("changeFrontMarker")):(this.$backMarkers[n]=e,this._signal("changeBackMarker")),e},this.removeMarker=function(e){var t=this.$frontMarkers[e]||this.$backMarkers[e];if(!t)return;var n=t.inFront?this.$frontMarkers:this.$backMarkers;t&&(delete n[e],this._signal(t.inFront?"changeFrontMarker":"changeBackMarker"))},this.getMarkers=function(e){return e?this.$frontMarkers:this.$backMarkers},this.highlight=function(e){if(!this.$searchHighlight){var t=new h(null,"ace_selected-word","text");this.$searchHighlight=this.addDynamicMarker(t)}this.$searchHighlight.setRegexp(e)},this.highlightLines=function(e,t,n,r){typeof t!="number"&&(n=t,t=e),n||(n="ace_step");var i=new f(e,0,t,Infinity);return i.id=this.addMarker(i,n,"fullLine",r),i},this.setAnnotations=function(e){this.$annotations=e,this._signal("changeAnnotation",{})},this.getAnnotations=function(){return this.$annotations||[]},this.clearAnnotations=function(){this.setAnnotations([])},this.$detectNewLine=function(e){var t=e.match(/^.*?(\r?\n)/m);t?this.$autoNewLine=t[1]:this.$autoNewLine="\n"},this.getWordRange=function(e,t){var n=this.getLine(e),r=!1;t>0&&(r=!!n.charAt(t-1).match(this.tokenRe)),r||(r=!!n.charAt(t).match(this.tokenRe));if(r)var i=this.tokenRe;else if(/^\s+$/.test(n.slice(t-1,t+1)))var i=/\s/;else var i=this.nonTokenRe;var s=t;if(s>0){do s--;while(s>=0&&n.charAt(s).match(i));s++}var o=t;while(o<n.length&&n.charAt(o).match(i))o++;return new f(e,s,e,o)},this.getAWordRange=function(e,t){var n=this.getWordRange(e,t),r=this.getLine(n.end.row);while(r.charAt(n.end.column).match(/[ \t]/))n.end.column+=1;return n},this.setNewLineMode=function(e){this.doc.setNewLineMode(e)},this.getNewLineMode=function(){return this.doc.getNewLineMode()},this.setUseWorker=function(e){this.setOption("useWorker",e)},this.getUseWorker=function(){return this.$useWorker},this.onReloadTokenizer=function(e){var t=e.data;this.bgTokenizer.start(t.first),this._signal("tokenizerUpdate",e)},this.$modes={},this.$mode=null,this.$modeId=null,this.setMode=function(e,t){if(e&&typeof e=="object"){if(e.getTokenizer)return this.$onChangeMode(e);var n=e,r=n.path}else r=e||"ace/mode/text";this.$modes["ace/mode/text"]||(this.$modes["ace/mode/text"]=new a);if(this.$modes[r]&&!n){this.$onChangeMode(this.$modes[r]),t&&t();return}this.$modeId=r,s.loadModule(["mode",r],function(e){if(this.$modeId!==r)return t&&t();if(this.$modes[r]&&!n)return this.$onChangeMode(this.$modes[r]);e&&e.Mode&&(e=new e.Mode(n),n||(this.$modes[r]=e,e.$id=r),this.$onChangeMode(e),t&&t())}.bind(this)),this.$mode||this.$onChangeMode(this.$modes["ace/mode/text"],!0)},this.$onChangeMode=function(e,t){t||(this.$modeId=e.$id);if(this.$mode===e)return;this.$mode=e,this.$stopWorker(),this.$useWorker&&this.$startWorker();var n=e.getTokenizer();if(n.addEventListener!==undefined){var r=this.onReloadTokenizer.bind(this);n.addEventListener("update",r)}if(!this.bgTokenizer){this.bgTokenizer=new c(n);var i=this;this.bgTokenizer.addEventListener("update",function(e){i._signal("tokenizerUpdate",e)})}else this.bgTokenizer.setTokenizer(n);this.bgTokenizer.setDocument(this.getDocument()),this.tokenRe=e.tokenRe,this.nonTokenRe=e.nonTokenRe,t||(this.$options.wrapMethod.set.call(this,this.$wrapMethod),this.$setFolding(e.foldingRules),this.bgTokenizer.start(0),this._emit("changeMode"))},this.$stopWorker=function(){this.$worker&&this.$worker.terminate(),this.$worker=null},this.$startWorker=function(){if(typeof Worker!="undefined"&&!e.noWorker)try{this.$worker=this.$mode.createWorker(this)}catch(t){console.log("Could not load worker"),console.log(t),this.$worker=null}else this.$worker=null},this.getMode=function(){return this.$mode},this.$scrollTop=0,this.setScrollTop=function(e){if(this.$scrollTop===e||isNaN(e))return;this.$scrollTop=e,this._signal("changeScrollTop",e)},this.getScrollTop=function(){return this.$scrollTop},this.$scrollLeft=0,this.setScrollLeft=function(e){if(this.$scrollLeft===e||isNaN(e))return;this.$scrollLeft=e,this._signal("changeScrollLeft",e)},this.getScrollLeft=function(){return this.$scrollLeft},this.getScreenWidth=function(){return this.$computeWidth(),this.lineWidgets?Math.max(this.getLineWidgetMaxWidth(),this.screenWidth):this.screenWidth},this.getLineWidgetMaxWidth=function(){if(this.lineWidgetsWidth!=null)return this.lineWidgetsWidth;var e=0;return this.lineWidgets.forEach(function(t){t&&t.screenWidth>e&&(e=t.screenWidth)}),this.lineWidgetWidth=e},this.$computeWidth=function(e){if(this.$modified||e){this.$modified=!1;if(this.$useWrapMode)return this.screenWidth=this.$wrapLimit;var t=this.doc.getAllLines(),n=this.$rowLengthCache,r=0,i=0,s=this.$foldData[i],o=s?s.start.row:Infinity,u=t.length;for(var a=0;a<u;a++){if(a>o){a=s.end.row+1;if(a>=u)break;s=this.$foldData[i++],o=s?s.start.row:Infinity}n[a]==null&&(n[a]=this.$getStringScreenWidth(t[a])[0]),n[a]>r&&(r=n[a])}this.screenWidth=r}},this.getLine=function(e){return this.doc.getLine(e)},this.getLines=function(e,t){return this.doc.getLines(e,t)},this.getLength=function(){return this.doc.getLength()},this.getTextRange=function(e){return this.doc.getTextRange(e||this.selection.getRange())},this.insert=function(e,t){return this.doc.insert(e,t)},this.remove=function(e){return this.doc.remove(e)},this.undoChanges=function(e,t){if(!e.length)return;this.$fromUndo=!0;var n=null;for(var r=e.length-1;r!=-1;r--){var i=e[r];i.group=="doc"?(this.doc.revertDeltas(i.deltas),n=this.$getUndoSelection(i.deltas,!0,n)):i.deltas.forEach(function(e){this.addFolds(e.folds)},this)}return this.$fromUndo=!1,n&&this.$undoSelect&&!t&&this.selection.setSelectionRange(n),n},this.redoChanges=function(e,t){if(!e.length)return;this.$fromUndo=!0;var n=null;for(var r=0;r<e.length;r++){var i=e[r];i.group=="doc"&&(this.doc.applyDeltas(i.deltas),n=this.$getUndoSelection(i.deltas,!1,n))}return this.$fromUndo=!1,n&&this.$undoSelect&&!t&&this.selection.setSelectionRange(n),n},this.setUndoSelect=function(e){this.$undoSelect=e},this.$getUndoSelection=function(e,t,n){function r(e){var n=e.action==="insertText"||e.action==="insertLines";return t?!n:n}var i=e[0],s,o,u=!1;r(i)?(s=f.fromPoints(i.range.start,i.range.end),u=!0):(s=f.fromPoints(i.range.start,i.range.start),u=!1);for(var a=1;a<e.length;a++)i=e[a],r(i)?(o=i.range.start,s.compare(o.row,o.column)==-1&&s.setStart(i.range.start),o=i.range.end,s.compare(o.row,o.column)==1&&s.setEnd(i.range.end),u=!0):(o=i.range.start,s.compare(o.row,o.column)==-1&&(s=f.fromPoints(i.range.start,i.range.start)),u=!1);if(n!=null){f.comparePoints(n.start,s.start)===0&&(n.start.column+=s.end.column-s.start.column,n.end.column+=s.end.column-s.start.column);var l=n.compareRange(s);l==1?s.setStart(n.start):l==-1&&s.setEnd(n.end)}return s},this.replace=function(e,t){return this.doc.replace(e,t)},this.moveText=function(e,t,n){var r=this.getTextRange(e),i=this.getFoldsInRange(e),s=f.fromPoints(t,t);if(!n){this.remove(e);var o=e.start.row-e.end.row,u=o?-e.end.column:e.start.column-e.end.column;u&&(s.start.row==e.end.row&&s.start.column>e.end.column&&(s.start.column+=u),s.end.row==e.end.row&&s.end.column>e.end.column&&(s.end.column+=u)),o&&s.start.row>=e.end.row&&(s.start.row+=o,s.end.row+=o)}s.end=this.insert(s.start,r);if(i.length){var a=e.start,l=s.start,o=l.row-a.row,u=l.column-a.column;this.addFolds(i.map(function(e){return e=e.clone(),e.start.row==a.row&&(e.start.column+=u),e.end.row==a.row&&(e.end.column+=u),e.start.row+=o,e.end.row+=o,e}))}return s},this.indentRows=function(e,t,n){n=n.replace(/\t/g,this.getTabString());for(var r=e;r<=t;r++)this.insert({row:r,column:0},n)},this.outdentRows=function(e){var t=e.collapseRows(),n=new f(0,0,0,0),r=this.getTabSize();for(var i=t.start.row;i<=t.end.row;++i){var s=this.getLine(i);n.start.row=i,n.end.row=i;for(var o=0;o<r;++o)if(s.charAt(o)!=" ")break;o<r&&s.charAt(o)=="	"?(n.start.column=o,n.end.column=o+1):(n.start.column=0,n.end.column=o),this.remove(n)}},this.$moveLines=function(e,t,n){e=this.getRowFoldStart(e),t=this.getRowFoldEnd(t);if(n<0){var r=this.getRowFoldStart(e+n);if(r<0)return 0;var i=r-e}else if(n>0){var r=this.getRowFoldEnd(t+n);if(r>this.doc.getLength()-1)return 0;var i=r-t}else{e=this.$clipRowToDocument(e),t=this.$clipRowToDocument(t);var i=t-e+1}var s=new f(e,0,t,Number.MAX_VALUE),o=this.getFoldsInRange(s).map(function(e){return e=e.clone(),e.start.row+=i,e.end.row+=i,e}),u=n==0?this.doc.getLines(e,t):this.doc.removeLines(e,t);return this.doc.insertLines(e+i,u),o.length&&this.addFolds(o),i},this.moveLinesUp=function(e,t){return this.$moveLines(e,t,-1)},this.moveLinesDown=function(e,t){return this.$moveLines(e,t,1)},this.duplicateLines=function(e,t){return this.$moveLines(e,t,0)},this.$clipRowToDocument=function(e){return Math.max(0,Math.min(e,this.doc.getLength()-1))},this.$clipColumnToRow=function(e,t){return t<0?0:Math.min(this.doc.getLine(e).length,t)},this.$clipPositionToDocument=function(e,t){t=Math.max(0,t);if(e<0)e=0,t=0;else{var n=this.doc.getLength();e>=n?(e=n-1,t=this.doc.getLine(n-1).length):t=Math.min(this.doc.getLine(e).length,t)}return{row:e,column:t}},this.$clipRangeToDocument=function(e){e.start.row<0?(e.start.row=0,e.start.column=0):e.start.column=this.$clipColumnToRow(e.start.row,e.start.column);var t=this.doc.getLength()-1;return e.end.row>t?(e.end.row=t,e.end.column=this.doc.getLine(t).length):e.end.column=this.$clipColumnToRow(e.end.row,e.end.column),e},this.$wrapLimit=80,this.$useWrapMode=!1,this.$wrapLimitRange={min:null,max:null},this.setUseWrapMode=function(e){if(e!=this.$useWrapMode){this.$useWrapMode=e,this.$modified=!0,this.$resetRowCache(0);if(e){var t=this.getLength();this.$wrapData=Array(t),this.$updateWrapData(0,t-1)}this._signal("changeWrapMode")}},this.getUseWrapMode=function(){return this.$useWrapMode},this.setWrapLimitRange=function(e,t){if(this.$wrapLimitRange.min!==e||this.$wrapLimitRange.max!==t)this.$wrapLimitRange={min:e,max:t},this.$modified=!0,this._signal("changeWrapMode")},this.adjustWrapLimit=function(e,t){var n=this.$wrapLimitRange;n.max<0&&(n={min:t,max:t});var r=this.$constrainWrapLimit(e,n.min,n.max);return r!=this.$wrapLimit&&r>1?(this.$wrapLimit=r,this.$modified=!0,this.$useWrapMode&&(this.$updateWrapData(0,this.getLength()-1),this.$resetRowCache(0),this._signal("changeWrapLimit")),!0):!1},this.$constrainWrapLimit=function(e,t,n){return t&&(e=Math.max(t,e)),n&&(e=Math.min(n,e)),e},this.getWrapLimit=function(){return this.$wrapLimit},this.setWrapLimit=function(e){this.setWrapLimitRange(e,e)},this.getWrapLimitRange=function(){return{min:this.$wrapLimitRange.min,max:this.$wrapLimitRange.max}},this.$updateInternalDataOnChange=function(e){var t=this.$useWrapMode,n,r=e.data.action,i=e.data.range.start.row,s=e.data.range.end.row,o=e.data.range.start,u=e.data.range.end,a=null;r.indexOf("Lines")!=-1?(r=="insertLines"?s=i+e.data.lines.length:s=i,n=e.data.lines?e.data.lines.length:s-i):n=s-i,this.$updating=!0;if(n!=0)if(r.indexOf("remove")!=-1){this[t?"$wrapData":"$rowLengthCache"].splice(i,n);var f=this.$foldData;a=this.getFoldsInRange(e.data.range),this.removeFolds(a);var l=this.getFoldLine(u.row),c=0;if(l){l.addRemoveChars(u.row,u.column,o.column-u.column),l.shiftRow(-n);var h=this.getFoldLine(i);h&&h!==l&&(h.merge(l),l=h),c=f.indexOf(l)+1}for(c;c<f.length;c++){var l=f[c];l.start.row>=u.row&&l.shiftRow(-n)}s=i}else{var p=Array(n);p.unshift(i,0);var d=t?this.$wrapData:this.$rowLengthCache;d.splice.apply(d,p);var f=this.$foldData,l=this.getFoldLine(i),c=0;if(l){var v=l.range.compareInside(o.row,o.column);v==0?(l=l.split(o.row,o.column),l.shiftRow(n),l.addRemoveChars(s,0,u.column-o.column)):v==-1&&(l.addRemoveChars(i,0,u.column-o.column),l.shiftRow(n)),c=f.indexOf(l)+1}for(c;c<f.length;c++){var l=f[c];l.start.row>=i&&l.shiftRow(n)}}else{n=Math.abs(e.data.range.start.column-e.data.range.end.column),r.indexOf("remove")!=-1&&(a=this.getFoldsInRange(e.data.range),this.removeFolds(a),n=-n);var l=this.getFoldLine(i);l&&l.addRemoveChars(i,o.column,n)}return t&&this.$wrapData.length!=this.doc.getLength()&&console.error("doc.getLength() and $wrapData.length have to be the same!"),this.$updating=!1,t?this.$updateWrapData(i,s):this.$updateRowLengthCache(i,s),a},this.$updateRowLengthCache=function(e,t,n){this.$rowLengthCache[e]=null,this.$rowLengthCache[t]=null},this.$updateWrapData=function(e,t){var n=this.doc.getAllLines(),r=this.getTabSize(),i=this.$wrapData,s=this.$wrapLimit,o,a,f=e;t=Math.min(t,n.length-1);while(f<=t)a=this.getFoldLine(f,a),a?(o=[],a.walk(function(e,t,r,i){var s;if(e!=null){s=this.$getDisplayTokens(e,o.length),s[0]=u;for(var a=1;a<s.length;a++)s[a]=l}else s=this.$getDisplayTokens(n[t].substring(i,r),o.length);o=o.concat(s)}.bind(this),a.end.row,n[a.end.row].length+1),i[a.start.row]=this.$computeWrapSplits(o,s,r),f=a.end.row+1):(o=this.$getDisplayTokens(n[f]),i[f]=this.$computeWrapSplits(o,s,r),f++)};var t=1,n=2,u=3,l=4,p=9,d=10,v=11,m=12;this.$computeWrapSplits=function(e,t){function a(t){var r=e.slice(i,t),o=r.length;r.join("").replace(/12/g,function(){o-=1}).replace(/2/g,function(){o-=1}),s+=o,n.push(s),i=t}if(e.length==0)return[];var n=[],r=e.length,i=0,s=0,o=this.$wrapAsCode;while(r-i>t){var f=i+t;if(e[f-1]>=d&&e[f]>=d){a(f);continue}if(e[f]==u||e[f]==l){for(f;f!=i-1;f--)if(e[f]==u)break;if(f>i){a(f);continue}f=i+t;for(f;f<e.length;f++)if(e[f]!=l)break;if(f==e.length)break;a(f);continue}var c=Math.max(f-(o?10:t-(t>>2)),i-1);while(f>c&&e[f]<u)f--;if(o){while(f>c&&e[f]<u)f--;while(f>c&&e[f]==p)f--}else while(f>c&&e[f]<d)f--;if(f>c){a(++f);continue}f=i+t,a(f)}return n},this.$getDisplayTokens=function(e,r){var i=[],s;r=r||0;for(var o=0;o<e.length;o++){var u=e.charCodeAt(o);if(u==9){s=this.getScreenTabSize(i.length+r),i.push(v);for(var a=1;a<s;a++)i.push(m)}else u==32?i.push(d):u>39&&u<48||u>57&&u<64?i.push(p):u>=4352&&g(u)?i.push(t,n):i.push(t)}return i},this.$getStringScreenWidth=function(e,t,n){if(t==0)return[0,0];t==null&&(t=Infinity),n=n||0;var r,i;for(i=0;i<e.length;i++){r=e.charCodeAt(i),r==9?n+=this.getScreenTabSize(n):r>=4352&&g(r)?n+=2:n+=1;if(n>t)break}return[n,i]},this.lineWidgets=null,this.getRowLength=function(e){if(this.lineWidgets)var t=this.lineWidgets[e]&&this.lineWidgets[e].rowCount||0;else t=0;return!this.$useWrapMode||!this.$wrapData[e]?1+t:this.$wrapData[e].length+1+t},this.getRowLineCount=function(e){return!this.$useWrapMode||!this.$wrapData[e]?1:this.$wrapData[e].length+1},this.getScreenLastRowColumn=function(e){var t=this.screenToDocumentPosition(e,Number.MAX_VALUE);return this.documentToScreenColumn(t.row,t.column)},this.getDocumentLastRowColumn=function(e,t){var n=this.documentToScreenRow(e,t);return this.getScreenLastRowColumn(n)},this.getDocumentLastRowColumnPosition=function(e,t){var n=this.documentToScreenRow(e,t);return this.screenToDocumentPosition(n,Number.MAX_VALUE/10)},this.getRowSplitData=function(e){return this.$useWrapMode?this.$wrapData[e]:undefined},this.getScreenTabSize=function(e){return this.$tabSize-e%this.$tabSize},this.screenToDocumentRow=function(e,t){return this.screenToDocumentPosition(e,t).row},this.screenToDocumentColumn=function(e,t){return this.screenToDocumentPosition(e,t).column},this.screenToDocumentPosition=function(e,t){if(e<0)return{row:0,column:0};var n,r=0,i=0,s,o=0,u=0,a=this.$screenRowCache,f=this.$getRowCacheIndex(a,e),l=a.length;if(l&&f>=0)var o=a[f],r=this.$docRowCache[f],c=e>a[l-1];else var c=!l;var h=this.getLength()-1,p=this.getNextFoldLine(r),d=p?p.start.row:Infinity;while(o<=e){u=this.getRowLength(r);if(o+u>e||r>=h)break;o+=u,r++,r>d&&(r=p.end.row+1,p=this.getNextFoldLine(r,p),d=p?p.start.row:Infinity),c&&(this.$docRowCache.push(r),this.$screenRowCache.push(o))}if(p&&p.start.row<=r)n=this.getFoldDisplayLine(p),r=p.start.row;else{if(o+u<=e||r>h)return{row:h,column:this.getLine(h).length};n=this.getLine(r),p=null}if(this.$useWrapMode){var v=this.$wrapData[r];if(v){var m=Math.floor(e-o);s=v[m],m>0&&v.length&&(i=v[m-1]||v[v.length-1],n=n.substring(i))}}return i+=this.$getStringScreenWidth(n,t)[1],this.$useWrapMode&&i>=s&&(i=s-1),p?p.idxToPosition(i):{row:r,column:i}},this.documentToScreenPosition=function(e,t){if(typeof t=="undefined")var n=this.$clipPositionToDocument(e.row,e.column);else n=this.$clipPositionToDocument(e,t);e=n.row,t=n.column;var r=0,i=null,s=null;s=this.getFoldAt(e,t,1),s&&(e=s.start.row,t=s.start.column);var o,u=0,a=this.$docRowCache,f=this.$getRowCacheIndex(a,e),l=a.length;if(l&&f>=0)var u=a[f],r=this.$screenRowCache[f],c=e>a[l-1];else var c=!l;var h=this.getNextFoldLine(u),p=h?h.start.row:Infinity;while(u<e){if(u>=p){o=h.end.row+1;if(o>e)break;h=this.getNextFoldLine(o,h),p=h?h.start.row:Infinity}else o=u+1;r+=this.getRowLength(u),u=o,c&&(this.$docRowCache.push(u),this.$screenRowCache.push(r))}var d="";h&&u>=p?(d=this.getFoldDisplayLine(h,e,t),i=h.start.row):(d=this.getLine(e).substring(0,t),i=e);if(this.$useWrapMode){var v=this.$wrapData[i];if(v){var m=0;while(d.length>=v[m])r++,m++;d=d.substring(v[m-1]||0,d.length)}}return{row:r,column:this.$getStringScreenWidth(d)[0]}},this.documentToScreenColumn=function(e,t){return this.documentToScreenPosition(e,t).column},this.documentToScreenRow=function(e,t){return this.documentToScreenPosition(e,t).row},this.getScreenLength=function(){var e=0,t=null;if(!this.$useWrapMode){e=this.getLength();var n=this.$foldData;for(var r=0;r<n.length;r++)t=n[r],e-=t.end.row-t.start.row}else{var i=this.$wrapData.length,s=0,r=0,t=this.$foldData[r++],o=t?t.start.row:Infinity;while(s<i){var u=this.$wrapData[s];e+=u?u.length+1:1,s++,s>o&&(s=t.end.row+1,t=this.$foldData[r++],o=t?t.start.row:Infinity)}}return this.lineWidgets&&(e+=this.$getWidgetScreenLength()),e},this.$setFontMetrics=function(e){}}).call(p.prototype),e("./edit_session/folding").Folding.call(p.prototype),e("./edit_session/bracket_match").BracketMatch.call(p.prototype),s.defineOptions(p.prototype,"session",{wrap:{set:function(e){!e||e=="off"?e=!1:e=="free"?e=!0:e=="printMargin"?e=-1:typeof e=="string"&&(e=parseInt(e,10)||!1);if(this.$wrap==e)return;if(!e)this.setUseWrapMode(!1);else{var t=typeof e=="number"?e:null;this.setWrapLimitRange(t,t),this.setUseWrapMode(!0)}this.$wrap=e},get:function(){return this.getUseWrapMode()?this.$wrap==-1?"printMargin":this.getWrapLimitRange().min?this.$wrap:"free":"off"},handlesSet:!0},wrapMethod:{set:function(e){e=e=="auto"?this.$mode.type!="text":e!="text",e!=this.$wrapAsCode&&(this.$wrapAsCode=e,this.$useWrapMode&&(this.$modified=!0,this.$resetRowCache(0),this.$updateWrapData(0,this.getLength()-1)))},initialValue:"auto"},firstLineNumber:{set:function(){this._signal("changeBreakpoint")},initialValue:1},useWorker:{set:function(e){this.$useWorker=e,this.$stopWorker(),e&&this.$startWorker()},initialValue:!0},useSoftTabs:{initialValue:!0},tabSize:{set:function(e){if(isNaN(e)||this.$tabSize===e)return;this.$modified=!0,this.$rowLengthCache=[],this.$tabSize=e,this._signal("changeTabSize")},initialValue:4,handlesSet:!0},overwrite:{set:function(e){this._signal("changeOverwrite")},initialValue:!1},newLineMode:{set:function(e){this.doc.setNewLineMode(e)},get:function(){return this.doc.getNewLineMode()},handlesSet:!0},mode:{set:function(e){this.setMode(e)},get:function(){return this.$modeId}}}),t.EditSession=p}),ace.define("ace/search",["require","exports","module","ace/lib/lang","ace/lib/oop","ace/range"],function(e,t,n){"use strict";var r=e("./lib/lang"),i=e("./lib/oop"),s=e("./range").Range,o=function(){this.$options={}};(function(){this.set=function(e){return i.mixin(this.$options,e),this},this.getOptions=function(){return r.copyObject(this.$options)},this.setOptions=function(e){this.$options=e},this.find=function(e){var t=this.$matchIterator(e,this.$options);if(!t)return!1;var n=null;return t.forEach(function(e,t,r){if(!e.start){var i=e.offset+(r||0);n=new s(t,i,t,i+e.length)}else n=e;return!0}),n},this.findAll=function(e){var t=this.$options;if(!t.needle)return[];this.$assembleRegExp(t);var n=t.range,i=n?e.getLines(n.start.row,n.end.row):e.doc.getAllLines(),o=[],u=t.re;if(t.$isMultiLine){var a=u.length,f=i.length-a,l;e:for(var c=u.offset||0;c<=f;c++){for(var h=0;h<a;h++)if(i[c+h].search(u[h])==-1)continue e;var p=i[c],d=i[c+a-1],v=p.length-p.match(u[0])[0].length,m=d.match(u[a-1])[0].length;if(l&&l.end.row===c&&l.end.column>v)continue;o.push(l=new s(c,v,c+a-1,m)),a>2&&(c=c+a-2)}}else for(var g=0;g<i.length;g++){var y=r.getMatchOffsets(i[g],u);for(var h=0;h<y.length;h++){var b=y[h];o.push(new s(g,b.offset,g,b.offset+b.length))}}if(n){var w=n.start.column,E=n.start.column,g=0,h=o.length-1;while(g<h&&o[g].start.column<w&&o[g].start.row==n.start.row)g++;while(g<h&&o[h].end.column>E&&o[h].end.row==n.end.row)h--;o=o.slice(g,h+1);for(g=0,h=o.length;g<h;g++)o[g].start.row+=n.start.row,o[g].end.row+=n.start.row}return o},this.replace=function(e,t){var n=this.$options,r=this.$assembleRegExp(n);if(n.$isMultiLine)return t;if(!r)return;var i=r.exec(e);if(!i||i[0].length!=e.length)return null;t=e.replace(r,t);if(n.preserveCase){t=t.split("");for(var s=Math.min(e.length,e.length);s--;){var o=e[s];o&&o.toLowerCase()!=o?t[s]=t[s].toUpperCase():t[s]=t[s].toLowerCase()}t=t.join("")}return t},this.$matchIterator=function(e,t){var n=this.$assembleRegExp(t);if(!n)return!1;var i=this,o,u=t.backwards;if(t.$isMultiLine)var a=n.length,f=function(t,r,i){var u=t.search(n[0]);if(u==-1)return;for(var f=1;f<a;f++){t=e.getLine(r+f);if(t.search(n[f])==-1)return}var l=t.match(n[a-1])[0].length,c=new s(r,u,r+a-1,l);n.offset==1?(c.start.row--,c.start.column=Number.MAX_VALUE):i&&(c.start.column+=i);if(o(c))return!0};else if(u)var f=function(e,t,i){var s=r.getMatchOffsets(e,n);for(var u=s.length-1;u>=0;u--)if(o(s[u],t,i))return!0};else var f=function(e,t,i){var s=r.getMatchOffsets(e,n);for(var u=0;u<s.length;u++)if(o(s[u],t,i))return!0};return{forEach:function(n){o=n,i.$lineIterator(e,t).forEach(f)}}},this.$assembleRegExp=function(e,t){if(e.needle instanceof RegExp)return e.re=e.needle;var n=e.needle;if(!e.needle)return e.re=!1;e.regExp||(n=r.escapeRegExp(n)),e.wholeWord&&(n="\\b"+n+"\\b");var i=e.caseSensitive?"g":"gi";e.$isMultiLine=!t&&/[\n\r]/.test(n);if(e.$isMultiLine)return e.re=this.$assembleMultilineRegExp(n,i);try{var s=new RegExp(n,i)}catch(o){s=!1}return e.re=s},this.$assembleMultilineRegExp=function(e,t){var n=e.replace(/\r\n|\r|\n/g,"$\n^").split("\n"),r=[];for(var i=0;i<n.length;i++)try{r.push(new RegExp(n[i],t))}catch(s){return!1}return n[0]==""?(r.shift(),r.offset=1):r.offset=0,r},this.$lineIterator=function(e,t){var n=t.backwards==1,r=t.skipCurrent!=0,i=t.range,s=t.start;s||(s=i?i[n?"end":"start"]:e.selection.getRange()),s.start&&(s=s[r!=n?"end":"start"]);var o=i?i.start.row:0,u=i?i.end.row:e.getLength()-1,a=n?function(n){var r=s.row,i=e.getLine(r).substring(0,s.column);if(n(i,r))return;for(r--;r>=o;r--)if(n(e.getLine(r),r))return;if(t.wrap==0)return;for(r=u,o=s.row;r>=o;r--)if(n(e.getLine(r),r))return}:function(n){var r=s.row,i=e.getLine(r).substr(s.column);if(n(i,r,s.column))return;for(r+=1;r<=u;r++)if(n(e.getLine(r),r))return;if(t.wrap==0)return;for(r=o,u=s.row;r<=u;r++)if(n(e.getLine(r),r))return};return{forEach:a}}}).call(o.prototype),t.Search=o}),ace.define("ace/keyboard/hash_handler",["require","exports","module","ace/lib/keys","ace/lib/useragent"],function(e,t,n){"use strict";function s(e,t){this.platform=t||(i.isMac?"mac":"win"),this.commands={},this.commandKeyBinding={};if(this.__defineGetter__&&this.__defineSetter__&&typeof console!="undefined"&&console.error){var n=!1,r=function(){n||(n=!0,console.error("commmandKeyBinding has too many m's. use commandKeyBinding"))};this.__defineGetter__("commmandKeyBinding",function(){return r(),this.commandKeyBinding}),this.__defineSetter__("commmandKeyBinding",function(e){return r(),this.commandKeyBinding=e})}else this.commmandKeyBinding=this.commandKeyBinding;this.addCommands(e)}var r=e("../lib/keys"),i=e("../lib/useragent");(function(){this.addCommand=function(e){this.commands[e.name]&&this.removeCommand(e),this.commands[e.name]=e,e.bindKey&&this._buildKeyHash(e)},this.removeCommand=function(e){var t=typeof e=="string"?e:e.name;e=this.commands[t],delete this.commands[t];var n=this.commandKeyBinding;for(var r in n)for(var i in n[r])n[r][i]==e&&delete n[r][i]},this.bindKey=function(e,t){if(!e)return;if(typeof t=="function"){this.addCommand({exec:t,bindKey:e,name:t.name||e});return}var n=this.commandKeyBinding;e.split("|").forEach(function(e){var r=this.parseKeys(e,t),i=r.hashId;(n[i]||(n[i]={}))[r.key]=t},this)},this.addCommands=function(e){e&&Object.keys(e).forEach(function(t){var n=e[t];if(!n)return;if(typeof n=="string")return this.bindKey(n,t);typeof n=="function"&&(n={exec:n});if(typeof n!="object")return;n.name||(n.name=t),this.addCommand(n)},this)},this.removeCommands=function(e){Object.keys(e).forEach(function(t){this.removeCommand(e[t])},this)},this.bindKeys=function(e){Object.keys(e).forEach(function(t){this.bindKey(t,e[t])},this)},this._buildKeyHash=function(e){var t=e.bindKey;if(!t)return;var n=typeof t=="string"?t:t[this.platform];this.bindKey(n,e)},this.parseKeys=function(e){e.indexOf(" ")!=-1&&(e=e.split(/\s+/).pop());var t=e.toLowerCase().split(/[\-\+]([\-\+])?/).filter(function(e){return e}),n=t.pop(),i=r[n];if(r.FUNCTION_KEYS[i])n=r.FUNCTION_KEYS[i].toLowerCase();else{if(!t.length)return{key:n,hashId:-1};if(t.length==1&&t[0]=="shift")return{key:n.toUpperCase(),hashId:-1}}var s=0;for(var o=t.length;o--;){var u=r.KEY_MODS[t[o]];if(u==null)return typeof console!="undefined"&&console.error("invalid modifier "+t[o]+" in "+e),!1;s|=u}return{key:n,hashId:s}},this.findKeyCommand=function(t,n){var r=this.commandKeyBinding;return r[t]&&r[t][n]},this.handleKeyboard=function(e,t,n,r){return{command:this.findKeyCommand(t,n)}}}).call(s.prototype),t.HashHandler=s}),ace.define("ace/commands/command_manager",["require","exports","module","ace/lib/oop","ace/keyboard/hash_handler","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("../keyboard/hash_handler").HashHandler,s=e("../lib/event_emitter").EventEmitter,o=function(e,t){i.call(this,t,e),this.byName=this.commands,this.setDefaultHandler("exec",function(e){return e.command.exec(e.editor,e.args||{})})};r.inherits(o,i),function(){r.implement(this,s),this.exec=function(e,t,n){typeof e=="string"&&(e=this.commands[e]);if(!e)return!1;if(t&&t.$readOnly&&!e.readOnly)return!1;var r={editor:t,command:e,args:n},i=this._emit("exec",r);return this._signal("afterExec",r),i===!1?!1:!0},this.toggleRecording=function(e){if(this.$inReplay)return;return e&&e._emit("changeStatus"),this.recording?(this.macro.pop(),this.removeEventListener("exec",this.$addCommandToMacro),this.macro.length||(this.macro=this.oldMacro),this.recording=!1):(this.$addCommandToMacro||(this.$addCommandToMacro=function(e){this.macro.push([e.command,e.args])}.bind(this)),this.oldMacro=this.macro,this.macro=[],this.on("exec",this.$addCommandToMacro),this.recording=!0)},this.replay=function(e){if(this.$inReplay||!this.macro)return;if(this.recording)return this.toggleRecording(e);try{this.$inReplay=!0,this.macro.forEach(function(t){typeof t=="string"?this.exec(t,e):this.exec(t[0],e,t[1])},this)}finally{this.$inReplay=!1}},this.trimMacro=function(e){return e.map(function(e){return typeof e[0]!="string"&&(e[0]=e[0].name),e[1]||(e=e[0]),e})}}.call(o.prototype),t.CommandManager=o}),ace.define("ace/commands/default_commands",["require","exports","module","ace/lib/lang","ace/config","ace/range"],function(e,t,n){"use strict";function o(e,t){return{win:e,mac:t}}var r=e("../lib/lang"),i=e("../config"),s=e("../range").Range;t.commands=[{name:"showSettingsMenu",bindKey:o("Ctrl-,","Command-,"),exec:function(e){i.loadModule("ace/ext/settings_menu",function(t){t.init(e),e.showSettingsMenu()})},readOnly:!0},{name:"goToNextError",bindKey:o("Alt-E","Ctrl-E"),exec:function(e){i.loadModule("ace/ext/error_marker",function(t){t.showErrorMarker(e,1)})},scrollIntoView:"animate",readOnly:!0},{name:"goToPreviousError",bindKey:o("Alt-Shift-E","Ctrl-Shift-E"),exec:function(e){i.loadModule("ace/ext/error_marker",function(t){t.showErrorMarker(e,-1)})},scrollIntoView:"animate",readOnly:!0},{name:"selectall",bindKey:o("Ctrl-A","Command-A"),exec:function(e){e.selectAll()},readOnly:!0},{name:"centerselection",bindKey:o(null,"Ctrl-L"),exec:function(e){e.centerSelection()},readOnly:!0},{name:"gotoline",bindKey:o("Ctrl-L","Command-L"),exec:function(e){var t=parseInt(prompt("Enter line number:"),10);isNaN(t)||e.gotoLine(t)},readOnly:!0},{name:"fold",bindKey:o("Alt-L|Ctrl-F1","Command-Alt-L|Command-F1"),exec:function(e){e.session.toggleFold(!1)},scrollIntoView:"center",readOnly:!0},{name:"unfold",bindKey:o("Alt-Shift-L|Ctrl-Shift-F1","Command-Alt-Shift-L|Command-Shift-F1"),exec:function(e){e.session.toggleFold(!0)},scrollIntoView:"center",readOnly:!0},{name:"toggleFoldWidget",bindKey:o("F2","F2"),exec:function(e){e.session.toggleFoldWidget()},scrollIntoView:"center",readOnly:!0},{name:"toggleParentFoldWidget",bindKey:o("Alt-F2","Alt-F2"),exec:function(e){e.session.toggleFoldWidget(!0)},scrollIntoView:"center",readOnly:!0},{name:"foldall",bindKey:o("Ctrl-Alt-0","Ctrl-Command-Option-0"),exec:function(e){e.session.foldAll()},scrollIntoView:"center",readOnly:!0},{name:"foldOther",bindKey:o("Alt-0","Command-Option-0"),exec:function(e){e.session.foldAll(),e.session.unfold(e.selection.getAllRanges())},scrollIntoView:"center",readOnly:!0},{name:"unfoldall",bindKey:o("Alt-Shift-0","Command-Option-Shift-0"),exec:function(e){e.session.unfold()},scrollIntoView:"center",readOnly:!0},{name:"findnext",bindKey:o("Ctrl-K","Command-G"),exec:function(e){e.findNext()},multiSelectAction:"forEach",scrollIntoView:"center",readOnly:!0},{name:"findprevious",bindKey:o("Ctrl-Shift-K","Command-Shift-G"),exec:function(e){e.findPrevious()},multiSelectAction:"forEach",scrollIntoView:"center",readOnly:!0},{name:"selectOrFindNext",bindKey:o("Alt-K","Ctrl-G"),exec:function(e){e.selection.isEmpty()?e.selection.selectWord():e.findNext()},readOnly:!0},{name:"selectOrFindPrevious",bindKey:o("Alt-Shift-K","Ctrl-Shift-G"),exec:function(e){e.selection.isEmpty()?e.selection.selectWord():e.findPrevious()},readOnly:!0},{name:"find",bindKey:o("Ctrl-F","Command-F"),exec:function(e){i.loadModule("ace/ext/searchbox",function(t){t.Search(e)})},readOnly:!0},{name:"overwrite",bindKey:"Insert",exec:function(e){e.toggleOverwrite()},readOnly:!0},{name:"selecttostart",bindKey:o("Ctrl-Shift-Home","Command-Shift-Up"),exec:function(e){e.getSelection().selectFileStart()},multiSelectAction:"forEach",readOnly:!0,scrollIntoView:"animate",aceCommandGroup:"fileJump"},{name:"gotostart",bindKey:o("Ctrl-Home","Command-Home|Command-Up"),exec:function(e){e.navigateFileStart()},multiSelectAction:"forEach",readOnly:!0,scrollIntoView:"animate",aceCommandGroup:"fileJump"},{name:"selectup",bindKey:o("Shift-Up","Shift-Up"),exec:function(e){e.getSelection().selectUp()},multiSelectAction:"forEach",readOnly:!0},{name:"golineup",bindKey:o("Up","Up|Ctrl-P"),exec:function(e,t){e.navigateUp(t.times)},multiSelectAction:"forEach",readOnly:!0},{name:"selecttoend",bindKey:o("Ctrl-Shift-End","Command-Shift-Down"),exec:function(e){e.getSelection().selectFileEnd()},multiSelectAction:"forEach",readOnly:!0,scrollIntoView:"animate",aceCommandGroup:"fileJump"},{name:"gotoend",bindKey:o("Ctrl-End","Command-End|Command-Down"),exec:function(e){e.navigateFileEnd()},multiSelectAction:"forEach",readOnly:!0,scrollIntoView:"animate",aceCommandGroup:"fileJump"},{name:"selectdown",bindKey:o("Shift-Down","Shift-Down"),exec:function(e){e.getSelection().selectDown()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"golinedown",bindKey:o("Down","Down|Ctrl-N"),exec:function(e,t){e.navigateDown(t.times)},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selectwordleft",bindKey:o("Ctrl-Shift-Left","Option-Shift-Left"),exec:function(e){e.getSelection().selectWordLeft()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"gotowordleft",bindKey:o("Ctrl-Left","Option-Left"),exec:function(e){e.navigateWordLeft()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selecttolinestart",bindKey:o("Alt-Shift-Left","Command-Shift-Left"),exec:function(e){e.getSelection().selectLineStart()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"gotolinestart",bindKey:o("Alt-Left|Home","Command-Left|Home|Ctrl-A"),exec:function(e){e.navigateLineStart()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selectleft",bindKey:o("Shift-Left","Shift-Left"),exec:function(e){e.getSelection().selectLeft()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"gotoleft",bindKey:o("Left","Left|Ctrl-B"),exec:function(e,t){e.navigateLeft(t.times)},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selectwordright",bindKey:o("Ctrl-Shift-Right","Option-Shift-Right"),exec:function(e){e.getSelection().selectWordRight()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"gotowordright",bindKey:o("Ctrl-Right","Option-Right"),exec:function(e){e.navigateWordRight()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selecttolineend",bindKey:o("Alt-Shift-Right","Command-Shift-Right"),exec:function(e){e.getSelection().selectLineEnd()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"gotolineend",bindKey:o("Alt-Right|End","Command-Right|End|Ctrl-E"),exec:function(e){e.navigateLineEnd()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selectright",bindKey:o("Shift-Right","Shift-Right"),exec:function(e){e.getSelection().selectRight()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"gotoright",bindKey:o("Right","Right|Ctrl-F"),exec:function(e,t){e.navigateRight(t.times)},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selectpagedown",bindKey:"Shift-PageDown",exec:function(e){e.selectPageDown()},readOnly:!0},{name:"pagedown",bindKey:o(null,"Option-PageDown"),exec:function(e){e.scrollPageDown()},readOnly:!0},{name:"gotopagedown",bindKey:o("PageDown","PageDown|Ctrl-V"),exec:function(e){e.gotoPageDown()},readOnly:!0},{name:"selectpageup",bindKey:"Shift-PageUp",exec:function(e){e.selectPageUp()},readOnly:!0},{name:"pageup",bindKey:o(null,"Option-PageUp"),exec:function(e){e.scrollPageUp()},readOnly:!0},{name:"gotopageup",bindKey:"PageUp",exec:function(e){e.gotoPageUp()},readOnly:!0},{name:"scrollup",bindKey:o("Ctrl-Up",null),exec:function(e){e.renderer.scrollBy(0,-2*e.renderer.layerConfig.lineHeight)},readOnly:!0},{name:"scrolldown",bindKey:o("Ctrl-Down",null),exec:function(e){e.renderer.scrollBy(0,2*e.renderer.layerConfig.lineHeight)},readOnly:!0},{name:"selectlinestart",bindKey:"Shift-Home",exec:function(e){e.getSelection().selectLineStart()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"selectlineend",bindKey:"Shift-End",exec:function(e){e.getSelection().selectLineEnd()},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"togglerecording",bindKey:o("Ctrl-Alt-E","Command-Option-E"),exec:function(e){e.commands.toggleRecording(e)},readOnly:!0},{name:"replaymacro",bindKey:o("Ctrl-Shift-E","Command-Shift-E"),exec:function(e){e.commands.replay(e)},readOnly:!0},{name:"jumptomatching",bindKey:o("Ctrl-P","Ctrl-P"),exec:function(e){e.jumpToMatching()},multiSelectAction:"forEach",readOnly:!0},{name:"selecttomatching",bindKey:o("Ctrl-Shift-P","Ctrl-Shift-P"),exec:function(e){e.jumpToMatching(!0)},multiSelectAction:"forEach",readOnly:!0},{name:"passKeysToBrowser",bindKey:o("null","null"),exec:function(){},passEvent:!0,readOnly:!0},{name:"cut",exec:function(e){var t=e.getSelectionRange();e._emit("cut",t),e.selection.isEmpty()||(e.session.remove(t),e.clearSelection())},scrollIntoView:"cursor",multiSelectAction:"forEach"},{name:"removeline",bindKey:o("Ctrl-D","Command-D"),exec:function(e){e.removeLines()},scrollIntoView:"cursor",multiSelectAction:"forEachLine"},{name:"duplicateSelection",bindKey:o("Ctrl-Shift-D","Command-Shift-D"),exec:function(e){e.duplicateSelection()},scrollIntoView:"cursor",multiSelectAction:"forEach"},{name:"sortlines",bindKey:o("Ctrl-Alt-S","Command-Alt-S"),exec:function(e){e.sortLines()},scrollIntoView:"selection",multiSelectAction:"forEachLine"},{name:"togglecomment",bindKey:o("Ctrl-/","Command-/"),exec:function(e){e.toggleCommentLines()},multiSelectAction:"forEachLine",scrollIntoView:"selectionPart"},{name:"toggleBlockComment",bindKey:o("Ctrl-Shift-/","Command-Shift-/"),exec:function(e){e.toggleBlockComment()},multiSelectAction:"forEach",scrollIntoView:"selectionPart"},{name:"modifyNumberUp",bindKey:o("Ctrl-Shift-Up","Alt-Shift-Up"),exec:function(e){e.modifyNumber(1)},multiSelectAction:"forEach"},{name:"modifyNumberDown",bindKey:o("Ctrl-Shift-Down","Alt-Shift-Down"),exec:function(e){e.modifyNumber(-1)},multiSelectAction:"forEach"},{name:"replace",bindKey:o("Ctrl-H","Command-Option-F"),exec:function(e){i.loadModule("ace/ext/searchbox",function(t){t.Search(e,!0)})}},{name:"undo",bindKey:o("Ctrl-Z","Command-Z"),exec:function(e){e.undo()}},{name:"redo",bindKey:o("Ctrl-Shift-Z|Ctrl-Y","Command-Shift-Z|Command-Y"),exec:function(e){e.redo()}},{name:"copylinesup",bindKey:o("Alt-Shift-Up","Command-Option-Up"),exec:function(e){e.copyLinesUp()},scrollIntoView:"cursor"},{name:"movelinesup",bindKey:o("Alt-Up","Option-Up"),exec:function(e){e.moveLinesUp()},scrollIntoView:"cursor"},{name:"copylinesdown",bindKey:o("Alt-Shift-Down","Command-Option-Down"),exec:function(e){e.copyLinesDown()},scrollIntoView:"cursor"},{name:"movelinesdown",bindKey:o("Alt-Down","Option-Down"),exec:function(e){e.moveLinesDown()},scrollIntoView:"cursor"},{name:"del",bindKey:o("Delete","Delete|Ctrl-D|Shift-Delete"),exec:function(e){e.remove("right")},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"backspace",bindKey:o("Shift-Backspace|Backspace","Ctrl-Backspace|Shift-Backspace|Backspace|Ctrl-H"),exec:function(e){e.remove("left")},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"cut_or_delete",bindKey:o("Shift-Delete",null),exec:function(e){if(!e.selection.isEmpty())return!1;e.remove("left")},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"removetolinestart",bindKey:o("Alt-Backspace","Command-Backspace"),exec:function(e){e.removeToLineStart()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"removetolineend",bindKey:o("Alt-Delete","Ctrl-K"),exec:function(e){e.removeToLineEnd()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"removewordleft",bindKey:o("Ctrl-Backspace","Alt-Backspace|Ctrl-Alt-Backspace"),exec:function(e){e.removeWordLeft()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"removewordright",bindKey:o("Ctrl-Delete","Alt-Delete"),exec:function(e){e.removeWordRight()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"outdent",bindKey:o("Shift-Tab","Shift-Tab"),exec:function(e){e.blockOutdent()},multiSelectAction:"forEach",scrollIntoView:"selectionPart"},{name:"indent",bindKey:o("Tab","Tab"),exec:function(e){e.indent()},multiSelectAction:"forEach",scrollIntoView:"selectionPart"},{name:"blockoutdent",bindKey:o("Ctrl-[","Ctrl-["),exec:function(e){e.blockOutdent()},multiSelectAction:"forEachLine",scrollIntoView:"selectionPart"},{name:"blockindent",bindKey:o("Ctrl-]","Ctrl-]"),exec:function(e){e.blockIndent()},multiSelectAction:"forEachLine",scrollIntoView:"selectionPart"},{name:"insertstring",exec:function(e,t){e.insert(t)},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"inserttext",exec:function(e,t){e.insert(r.stringRepeat(t.text||"",t.times||1))},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"splitline",bindKey:o(null,"Ctrl-O"),exec:function(e){e.splitLine()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"transposeletters",bindKey:o("Ctrl-T","Ctrl-T"),exec:function(e){e.transposeLetters()},multiSelectAction:function(e){e.transposeSelections(1)},scrollIntoView:"cursor"},{name:"touppercase",bindKey:o("Ctrl-U","Ctrl-U"),exec:function(e){e.toUpperCase()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"tolowercase",bindKey:o("Ctrl-Shift-U","Ctrl-Shift-U"),exec:function(e){e.toLowerCase()},multiSelectAction:"forEach",scrollIntoView:"cursor"},{name:"expandtoline",bindKey:o("Ctrl-Shift-L","Command-Shift-L"),exec:function(e){var t=e.selection.getRange();t.start.column=t.end.column=0,t.end.row++,e.selection.setRange(t,!1)},multiSelectAction:"forEach",scrollIntoView:"cursor",readOnly:!0},{name:"joinlines",bindKey:o(null,null),exec:function(e){var t=e.selection.isBackwards(),n=t?e.selection.getSelectionLead():e.selection.getSelectionAnchor(),i=t?e.selection.getSelectionAnchor():e.selection.getSelectionLead(),o=e.session.doc.getLine(n.row).length,u=e.session.doc.getTextRange(e.selection.getRange()),a=u.replace(/\n\s*/," ").length,f=e.session.doc.getLine(n.row);for(var l=n.row+1;l<=i.row+1;l++){var c=r.stringTrimLeft(r.stringTrimRight(e.session.doc.getLine(l)));c.length!==0&&(c=" "+c),f+=c}i.row+1<e.session.doc.getLength()-1&&(f+=e.session.doc.getNewLineCharacter()),e.clearSelection(),e.session.doc.replace(new s(n.row,0,i.row+2,0),f),a>0?(e.selection.moveCursorTo(n.row,n.column),e.selection.selectTo(n.row,n.column+a)):(o=e.session.doc.getLine(n.row).length>o?o+1:o,e.selection.moveCursorTo(n.row,o))},multiSelectAction:"forEach",readOnly:!0},{name:"invertSelection",bindKey:o(null,null),exec:function(e){var t=e.session.doc.getLength()-1,n=e.session.doc.getLine(t).length,r=e.selection.rangeList.ranges,i=[];r.length<1&&(r=[e.selection.getRange()]);for(var o=0;o<r.length;o++)o==r.length-1&&(r[o].end.row!==t||r[o].end.column!==n)&&i.push(new s(r[o].end.row,r[o].end.column,t,n)),o===0?(r[o].start.row!==0||r[o].start.column!==0)&&i.push(new s(0,0,r[o].start.row,r[o].start.column)):i.push(new s(r[o-1].end.row,r[o-1].end.column,r[o].start.row,r[o].start.column));e.exitMultiSelectMode(),e.clearSelection();for(var o=0;o<i.length;o++)e.selection.addRange(i[o],!1)},readOnly:!0,scrollIntoView:"none"}]}),ace.define("ace/editor",["require","exports","module","ace/lib/fixoldbrowsers","ace/lib/oop","ace/lib/dom","ace/lib/lang","ace/lib/useragent","ace/keyboard/textinput","ace/mouse/mouse_handler","ace/mouse/fold_handler","ace/keyboard/keybinding","ace/edit_session","ace/search","ace/range","ace/lib/event_emitter","ace/commands/command_manager","ace/commands/default_commands","ace/config","ace/token_iterator"],function(e,t,n){"use strict";e("./lib/fixoldbrowsers");var r=e("./lib/oop"),i=e("./lib/dom"),s=e("./lib/lang"),o=e("./lib/useragent"),u=e("./keyboard/textinput").TextInput,a=e("./mouse/mouse_handler").MouseHandler,f=e("./mouse/fold_handler").FoldHandler,l=e("./keyboard/keybinding").KeyBinding,c=e("./edit_session").EditSession,h=e("./search").Search,p=e("./range").Range,d=e("./lib/event_emitter").EventEmitter,v=e("./commands/command_manager").CommandManager,m=e("./commands/default_commands").commands,g=e("./config"),y=e("./token_iterator").TokenIterator,b=function(e,t){var n=e.getContainerElement();this.container=n,this.renderer=e,this.commands=new v(o.isMac?"mac":"win",m),this.textInput=new u(e.getTextAreaContainer(),this),this.renderer.textarea=this.textInput.getElement(),this.keyBinding=new l(this),this.$mouseHandler=new a(this),new f(this),this.$blockScrolling=0,this.$search=(new h).set({wrap:!0}),this.$historyTracker=this.$historyTracker.bind(this),this.commands.on("exec",this.$historyTracker),this.$initOperationListeners(),this._$emitInputEvent=s.delayedCall(function(){this._signal("input",{}),this.session.bgTokenizer&&this.session.bgTokenizer.scheduleStart()}.bind(this)),this.on("change",function(e,t){t._$emitInputEvent.schedule(31)}),this.setSession(t||new c("")),g.resetOptions(this),g._signal("editor",this)};(function(){r.implement(this,d),this.$initOperationListeners=function(){function e(e){return e[e.length-1]}this.selections=[],this.commands.on("exec",function(t){this.startOperation(t);var n=t.command;if(n.aceCommandGroup=="fileJump"){var r=this.prevOp;if(!r||r.command.aceCommandGroup!="fileJump")this.lastFileJumpPos=e(this.selections)}else this.lastFileJumpPos=null}.bind(this),!0),this.commands.on("afterExec",function(e){var t=e.command;t.aceCommandGroup=="fileJump"&&this.lastFileJumpPos&&!this.curOp.selectionChanged&&this.selection.fromJSON(this.lastFileJumpPos),this.endOperation(e)}.bind(this),!0),this.$opResetTimer=s.delayedCall(this.endOperation.bind(this)),this.on("change",function(){this.curOp||this.startOperation(),this.curOp.docChanged=!0}.bind(this),!0),this.on("changeSelection",function(){this.curOp||this.startOperation(),this.curOp.selectionChanged=!0}.bind(this),!0)},this.curOp=null,this.prevOp={},this.startOperation=function(e){if(this.curOp){if(!e||this.curOp.command)return;this.prevOp=this.curOp}e||(this.previousCommand=null,e={}),this.$opResetTimer.schedule(),this.curOp={command:e.command||{},args:e.args,scrollTop:this.renderer.scrollTop};var t=this.curOp.command;t&&t.scrollIntoView&&this.$blockScrolling++,this.selections.push(this.selection.toJSON())},this.endOperation=function(){if(this.curOp){var e=this.curOp.command;if(e&&e.scrollIntoView){this.$blockScrolling--;switch(e.scrollIntoView){case"center":this.renderer.scrollCursorIntoView(null,.5);break;case"animate":case"cursor":this.renderer.scrollCursorIntoView();break;case"selectionPart":var t=this.selection.getRange(),n=this.renderer.layerConfig;(t.start.row>=n.lastRow||t.end.row<=n.firstRow)&&this.renderer.scrollSelectionIntoView(this.selection.anchor,this.selection.lead);break;default:}e.scrollIntoView=="animate"&&this.renderer.animateScrolling(this.curOp.scrollTop)}this.prevOp=this.curOp,this.curOp=null}},this.$mergeableCommands=["backspace","del","insertstring"],this.$historyTracker=function(e){if(!this.$mergeUndoDeltas)return;var t=this.prevOp,n=this.$mergeableCommands,r=t.command&&e.command.name==t.command.name;if(e.command.name=="insertstring"){var i=e.args;this.mergeNextCommand===undefined&&(this.mergeNextCommand=!0),r=r&&this.mergeNextCommand&&(!/\s/.test(i)||/\s/.test(t.args)),this.mergeNextCommand=!0}else r=r&&n.indexOf(e.command.name)!==-1;this.$mergeUndoDeltas!="always"&&Date.now()-this.sequenceStartTime>2e3&&(r=!1),r?this.session.mergeUndoDeltas=!0:n.indexOf(e.command.name)!==-1&&(this.sequenceStartTime=Date.now())},this.setKeyboardHandler=function(e){if(!e)this.keyBinding.setKeyboardHandler(null);else if(typeof e=="string"){this.$keybindingId=e;var t=this;g.loadModule(["keybinding",e],function(n){t.$keybindingId==e&&t.keyBinding.setKeyboardHandler(n&&n.handler)})}else this.$keybindingId=null,this.keyBinding.setKeyboardHandler(e)},this.getKeyboardHandler=function(){return this.keyBinding.getKeyboardHandler()},this.setSession=function(e){if(this.session==e)return;var t=this.session;if(t){this.session.removeEventListener("change",this.$onDocumentChange),this.session.removeEventListener("changeMode",this.$onChangeMode),this.session.removeEventListener("tokenizerUpdate",this.$onTokenizerUpdate),this.session.removeEventListener("changeTabSize",this.$onChangeTabSize),this.session.removeEventListener("changeWrapLimit",this.$onChangeWrapLimit),this.session.removeEventListener("changeWrapMode",this.$onChangeWrapMode),this.session.removeEventListener("onChangeFold",this.$onChangeFold),this.session.removeEventListener("changeFrontMarker",this.$onChangeFrontMarker),this.session.removeEventListener("changeBackMarker",this.$onChangeBackMarker),this.session.removeEventListener("changeBreakpoint",this.$onChangeBreakpoint),this.session.removeEventListener("changeAnnotation",this.$onChangeAnnotation),this.session.removeEventListener("changeOverwrite",this.$onCursorChange),this.session.removeEventListener("changeScrollTop",this.$onScrollTopChange),this.session.removeEventListener("changeScrollLeft",this.$onScrollLeftChange);var n=this.session.getSelection();n.removeEventListener("changeCursor",this.$onCursorChange),n.removeEventListener("changeSelection",this.$onSelectionChange)}this.session=e,e&&(this.$onDocumentChange=this.onDocumentChange.bind(this),e.addEventListener("change",this.$onDocumentChange),this.renderer.setSession(e),this.$onChangeMode=this.onChangeMode.bind(this),e.addEventListener("changeMode",this.$onChangeMode),this.$onTokenizerUpdate=this.onTokenizerUpdate.bind(this),e.addEventListener("tokenizerUpdate",this.$onTokenizerUpdate),this.$onChangeTabSize=this.renderer.onChangeTabSize.bind(this.renderer),e.addEventListener("changeTabSize",this.$onChangeTabSize),this.$onChangeWrapLimit=this.onChangeWrapLimit.bind(this),e.addEventListener("changeWrapLimit",this.$onChangeWrapLimit),this.$onChangeWrapMode=this.onChangeWrapMode.bind(this),e.addEventListener("changeWrapMode",this.$onChangeWrapMode),this.$onChangeFold=this.onChangeFold.bind(this),e.addEventListener("changeFold",this.$onChangeFold),this.$onChangeFrontMarker=this.onChangeFrontMarker.bind(this),this.session.addEventListener("changeFrontMarker",this.$onChangeFrontMarker),this.$onChangeBackMarker=this.onChangeBackMarker.bind(this),this.session.addEventListener("changeBackMarker",this.$onChangeBackMarker),this.$onChangeBreakpoint=this.onChangeBreakpoint.bind(this),this.session.addEventListener("changeBreakpoint",this.$onChangeBreakpoint),this.$onChangeAnnotation=this.onChangeAnnotation.bind(this),this.session.addEventListener("changeAnnotation",this.$onChangeAnnotation),this.$onCursorChange=this.onCursorChange.bind(this),this.session.addEventListener("changeOverwrite",this.$onCursorChange),this.$onScrollTopChange=this.onScrollTopChange.bind(this),this.session.addEventListener("changeScrollTop",this.$onScrollTopChange),this.$onScrollLeftChange=this.onScrollLeftChange.bind(this),this.session.addEventListener("changeScrollLeft",this.$onScrollLeftChange),this.selection=e.getSelection(),this.selection.addEventListener("changeCursor",this.$onCursorChange),this.$onSelectionChange=this.onSelectionChange.bind(this),this.selection.addEventListener("changeSelection",this.$onSelectionChange),this.onChangeMode(),this.$blockScrolling+=1,this.onCursorChange(),this.$blockScrolling-=1,this.onScrollTopChange(),this.onScrollLeftChange(),this.onSelectionChange(),this.onChangeFrontMarker(),this.onChangeBackMarker(),this.onChangeBreakpoint(),this.onChangeAnnotation(),this.session.getUseWrapMode()&&this.renderer.adjustWrapLimit(),this.renderer.updateFull()),this._signal("changeSession",{session:e,oldSession:t}),t&&t._signal("changeEditor",{oldEditor:this}),e&&e._signal("changeEditor",{editor:this})},this.getSession=function(){return this.session},this.setValue=function(e,t){return this.session.doc.setValue(e),t?t==1?this.navigateFileEnd():t==-1&&this.navigateFileStart():this.selectAll(),e},this.getValue=function(){return this.session.getValue()},this.getSelection=function(){return this.selection},this.resize=function(e){this.renderer.onResize(e)},this.setTheme=function(e,t){this.renderer.setTheme(e,t)},this.getTheme=function(){return this.renderer.getTheme()},this.setStyle=function(e){this.renderer.setStyle(e)},this.unsetStyle=function(e){this.renderer.unsetStyle(e)},this.getFontSize=function(){return this.getOption("fontSize")||i.computedStyle(this.container,"fontSize")},this.setFontSize=function(e){this.setOption("fontSize",e)},this.$highlightBrackets=function(){this.session.$bracketHighlight&&(this.session.removeMarker(this.session.$bracketHighlight),this.session.$bracketHighlight=null);if(this.$highlightPending)return;var e=this;this.$highlightPending=!0,setTimeout(function(){e.$highlightPending=!1;var t=e.session.findMatchingBracket(e.getCursorPosition());if(t)var n=new p(t.row,t.column,t.row,t.column+1);else if(e.session.$mode.getMatching)var n=e.session.$mode.getMatching(e.session);n&&(e.session.$bracketHighlight=e.session.addMarker(n,"ace_bracket","text"))},50)},this.$highlightTags=function(){var e=this.session;if(this.$highlightTagPending)return;var t=this;this.$highlightTagPending=!0,setTimeout(function(){t.$highlightTagPending=!1;var n=t.getCursorPosition(),r=new y(t.session,n.row,n.column),i=r.getCurrentToken();if(!i||i.type.indexOf("tag-name")===-1){e.removeMarker(e.$tagHighlight),e.$tagHighlight=null;return}var s=i.value,o=0,u=r.stepBackward();if(u.value=="<"){do u=i,i=r.stepForward(),i&&i.value===s&&i.type.indexOf("tag-name")!==-1&&(u.value==="<"?o++:u.value==="</"&&o--);while(i&&o>=0)}else{do i=u,u=r.stepBackward(),i&&i.value===s&&i.type.indexOf("tag-name")!==-1&&(u.value==="<"?o++:u.value==="</"&&o--);while(u&&o<=0);r.stepForward()}if(!i){e.removeMarker(e.$tagHighlight),e.$tagHighlight=null;return}var a=r.getCurrentTokenRow(),f=r.getCurrentTokenColumn(),l=new p(a,f,a,f+i.value.length);e.$tagHighlight&&l.compareRange(e.$backMarkers[e.$tagHighlight].range)!==0&&(e.removeMarker(e.$tagHighlight),e.$tagHighlight=null),l&&!e.$tagHighlight&&(e.$tagHighlight=e.addMarker(l,"ace_bracket","text"))},50)},this.focus=function(){var e=this;setTimeout(function(){e.textInput.focus()}),this.textInput.focus()},this.isFocused=function(){return this.textInput.isFocused()},this.blur=function(){this.textInput.blur()},this.onFocus=function(){if(this.$isFocused)return;this.$isFocused=!0,this.renderer.showCursor(),this.renderer.visualizeFocus(),this._emit("focus")},this.onBlur=function(){if(!this.$isFocused)return;this.$isFocused=!1,this.renderer.hideCursor(),this.renderer.visualizeBlur(),this._emit("blur")},this.$cursorChange=function(){this.renderer.updateCursor()},this.onDocumentChange=function(e){var t=e.data,n=t.range,r;n.start.row==n.end.row&&t.action!="insertLines"&&t.action!="removeLines"?r=n.end.row:r=Infinity,this.renderer.updateLines(n.start.row,r),this._signal("change",e),this.$cursorChange()},this.onTokenizerUpdate=function(e){var t=e.data;this.renderer.updateLines(t.first,t.last)},this.onScrollTopChange=function(){this.renderer.scrollToY(this.session.getScrollTop())},this.onScrollLeftChange=function(){this.renderer.scrollToX(this.session.getScrollLeft())},this.onCursorChange=function(){this.$cursorChange(),this.$blockScrolling||this.renderer.scrollCursorIntoView(),this.$highlightBrackets(),this.$highlightTags(),this.$updateHighlightActiveLine(),this._signal("changeSelection")},this.$updateHighlightActiveLine=function(){var e=this.getSession(),t;if(this.$highlightActiveLine){if(this.$selectionStyle!="line"||!this.selection.isMultiLine())t=this.getCursorPosition();this.renderer.$maxLines&&this.session.getLength()===1&&!(this.renderer.$minLines>1)&&(t=!1)}if(e.$highlightLineMarker&&!t)e.removeMarker(e.$highlightLineMarker.id),e.$highlightLineMarker=null;else if(!e.$highlightLineMarker&&t){var n=new p(t.row,t.column,t.row,Infinity);n.id=e.addMarker(n,"ace_active-line","screenLine"),e.$highlightLineMarker=n}else t&&(e.$highlightLineMarker.start.row=t.row,e.$highlightLineMarker.end.row=t.row,e.$highlightLineMarker.start.column=t.column,e._signal("changeBackMarker"))},this.onSelectionChange=function(e){var t=this.session;t.$selectionMarker&&t.removeMarker(t.$selectionMarker),t.$selectionMarker=null;if(!this.selection.isEmpty()){var n=this.selection.getRange(),r=this.getSelectionStyle();t.$selectionMarker=t.addMarker(n,"ace_selection",r)}else this.$updateHighlightActiveLine();var i=this.$highlightSelectedWord&&this.$getSelectionHighLightRegexp();this.session.highlight(i),this._signal("changeSelection")},this.$getSelectionHighLightRegexp=function(){var e=this.session,t=this.getSelectionRange();if(t.isEmpty()||t.isMultiLine())return;var n=t.start.column-1,r=t.end.column+1,i=e.getLine(t.start.row),s=i.length,o=i.substring(Math.max(n,0),Math.min(r,s));if(n>=0&&/^[\w\d]/.test(o)||r<=s&&/[\w\d]$/.test(o))return;o=i.substring(t.start.column,t.end.column);if(!/^[\w\d]+$/.test(o))return;var u=this.$search.$assembleRegExp({wholeWord:!0,caseSensitive:!0,needle:o});return u},this.onChangeFrontMarker=function(){this.renderer.updateFrontMarkers()},this.onChangeBackMarker=function(){this.renderer.updateBackMarkers()},this.onChangeBreakpoint=function(){this.renderer.updateBreakpoints()},this.onChangeAnnotation=function(){this.renderer.setAnnotations(this.session.getAnnotations())},this.onChangeMode=function(e){this.renderer.updateText(),this._emit("changeMode",e)},this.onChangeWrapLimit=function(){this.renderer.updateFull()},this.onChangeWrapMode=function(){this.renderer.onResize(!0)},this.onChangeFold=function(){this.$updateHighlightActiveLine(),this.renderer.updateFull()},this.getSelectedText=function(){return this.session.getTextRange(this.getSelectionRange())},this.getCopyText=function(){var e=this.getSelectedText();return this._signal("copy",e),e},this.onCopy=function(){this.commands.exec("copy",this)},this.onCut=function(){this.commands.exec("cut",this)},this.onPaste=function(e){if(this.$readOnly)return;var t={text:e};this._signal("paste",t),this.insert(t.text,!0)},this.execCommand=function(e,t){this.commands.exec(e,this,t)},this.insert=function(e,t){var n=this.session,r=n.getMode(),i=this.getCursorPosition();if(this.getBehavioursEnabled()&&!t){var s=r.transformAction(n.getState(i.row),"insertion",this,n,e);s&&(e!==s.text&&(this.session.mergeUndoDeltas=!1,this.$mergeNextCommand=!1),e=s.text)}e=="	"&&(e=this.session.getTabString());if(!this.selection.isEmpty()){var o=this.getSelectionRange();i=this.session.remove(o),this.clearSelection()}else if(this.session.getOverwrite()){var o=new p.fromPoints(i,i);o.end.column+=e.length,this.session.remove(o)}if(e=="\n"||e=="\r\n"){var u=n.getLine(i.row);if(i.column>u.search(/\S|$/)){var a=u.substr(i.column).search(/\S|$/);n.doc.removeInLine(i.row,i.column,i.column+a)}}this.clearSelection();var f=i.column,l=n.getState(i.row),u=n.getLine(i.row),c=r.checkOutdent(l,u,e),h=n.insert(i,e);s&&s.selection&&(s.selection.length==2?this.selection.setSelectionRange(new p(i.row,f+s.selection[0],i.row,f+s.selection[1])):this.selection.setSelectionRange(new p(i.row+s.selection[0],s.selection[1],i.row+s.selection[2],s.selection[3])));if(n.getDocument().isNewLine(e)){var d=r.getNextLineIndent(l,u.slice(0,i.column),n.getTabString());n.insert({row:i.row+1,column:0},d)}c&&r.autoOutdent(l,n,i.row)},this.onTextInput=function(e){this.keyBinding.onTextInput(e)},this.onCommandKey=function(e,t,n){this.keyBinding.onCommandKey(e,t,n)},this.setOverwrite=function(e){this.session.setOverwrite(e)},this.getOverwrite=function(){return this.session.getOverwrite()},this.toggleOverwrite=function(){this.session.toggleOverwrite()},this.setScrollSpeed=function(e){this.setOption("scrollSpeed",e)},this.getScrollSpeed=function(){return this.getOption("scrollSpeed")},this.setDragDelay=function(e){this.setOption("dragDelay",e)},this.getDragDelay=function(){return this.getOption("dragDelay")},this.setSelectionStyle=function(e){this.setOption("selectionStyle",e)},this.getSelectionStyle=function(){return this.getOption("selectionStyle")},this.setHighlightActiveLine=function(e){this.setOption("highlightActiveLine",e)},this.getHighlightActiveLine=function(){return this.getOption("highlightActiveLine")},this.setHighlightGutterLine=function(e){this.setOption("highlightGutterLine",e)},this.getHighlightGutterLine=function(){return this.getOption("highlightGutterLine")},this.setHighlightSelectedWord=function(e){this.setOption("highlightSelectedWord",e)},this.getHighlightSelectedWord=function(){return this.$highlightSelectedWord},this.setAnimatedScroll=function(e){this.renderer.setAnimatedScroll(e)},this.getAnimatedScroll=function(){return this.renderer.getAnimatedScroll()},this.setShowInvisibles=function(e){this.renderer.setShowInvisibles(e)},this.getShowInvisibles=function(){return this.renderer.getShowInvisibles()},this.setDisplayIndentGuides=function(e){this.renderer.setDisplayIndentGuides(e)},this.getDisplayIndentGuides=function(){return this.renderer.getDisplayIndentGuides()},this.setShowPrintMargin=function(e){this.renderer.setShowPrintMargin(e)},this.getShowPrintMargin=function(){return this.renderer.getShowPrintMargin()},this.setPrintMarginColumn=function(e){this.renderer.setPrintMarginColumn(e)},this.getPrintMarginColumn=function(){return this.renderer.getPrintMarginColumn()},this.setReadOnly=function(e){this.setOption("readOnly",e)},this.getReadOnly=function(){return this.getOption("readOnly")},this.setBehavioursEnabled=function(e){this.setOption("behavioursEnabled",e)},this.getBehavioursEnabled=function(){return this.getOption("behavioursEnabled")},this.setWrapBehavioursEnabled=function(e){this.setOption("wrapBehavioursEnabled",e)},this.getWrapBehavioursEnabled=function(){return this.getOption("wrapBehavioursEnabled")},this.setShowFoldWidgets=function(e){this.setOption("showFoldWidgets",e)},this.getShowFoldWidgets=function(){return this.getOption("showFoldWidgets")},this.setFadeFoldWidgets=function(e){this.setOption("fadeFoldWidgets",e)},this.getFadeFoldWidgets=function(){return this.getOption("fadeFoldWidgets")},this.remove=function(e){this.selection.isEmpty()&&(e=="left"?this.selection.selectLeft():this.selection.selectRight());var t=this.getSelectionRange();if(this.getBehavioursEnabled()){var n=this.session,r=n.getState(t.start.row),i=n.getMode().transformAction(r,"deletion",this,n,t);if(t.end.column===0){var s=n.getTextRange(t);if(s[s.length-1]=="\n"){var o=n.getLine(t.end.row);/^\s+$/.test(o)&&(t.end.column=o.length)}}i&&(t=i)}this.session.remove(t),this.clearSelection()},this.removeWordRight=function(){this.selection.isEmpty()&&this.selection.selectWordRight(),this.session.remove(this.getSelectionRange()),this.clearSelection()},this.removeWordLeft=function(){this.selection.isEmpty()&&this.selection.selectWordLeft(),this.session.remove(this.getSelectionRange()),this.clearSelection()},this.removeToLineStart=function(){this.selection.isEmpty()&&this.selection.selectLineStart(),this.session.remove(this.getSelectionRange()),this.clearSelection()},this.removeToLineEnd=function(){this.selection.isEmpty()&&this.selection.selectLineEnd();var e=this.getSelectionRange();e.start.column==e.end.column&&e.start.row==e.end.row&&(e.end.column=0,e.end.row++),this.session.remove(e),this.clearSelection()},this.splitLine=function(){this.selection.isEmpty()||(this.session.remove(this.getSelectionRange()),this.clearSelection());var e=this.getCursorPosition();this.insert("\n"),this.moveCursorToPosition(e)},this.transposeLetters=function(){if(!this.selection.isEmpty())return;var e=this.getCursorPosition(),t=e.column;if(t===0)return;var n=this.session.getLine(e.row),r,i;t<n.length?(r=n.charAt(t)+n.charAt(t-1),i=new p(e.row,t-1,e.row,t+1)):(r=n.charAt(t-1)+n.charAt(t-2),i=new p(e.row,t-2,e.row,t)),this.session.replace(i,r)},this.toLowerCase=function(){var e=this.getSelectionRange();this.selection.isEmpty()&&this.selection.selectWord();var t=this.getSelectionRange(),n=this.session.getTextRange(t);this.session.replace(t,n.toLowerCase()),this.selection.setSelectionRange(e)},this.toUpperCase=function(){var e=this.getSelectionRange();this.selection.isEmpty()&&this.selection.selectWord();var t=this.getSelectionRange(),n=this.session.getTextRange(t);this.session.replace(t,n.toUpperCase()),this.selection.setSelectionRange(e)},this.indent=function(){var e=this.session,t=this.getSelectionRange();if(t.start.row<t.end.row){var n=this.$getSelectedRows();e.indentRows(n.first,n.last,"	");return}if(t.start.column<t.end.column){var r=e.getTextRange(t);if(!/^\s+$/.test(r)){var n=this.$getSelectedRows();e.indentRows(n.first,n.last,"	");return}}var i=e.getLine(t.start.row),o=t.start,u=e.getTabSize(),a=e.documentToScreenColumn(o.row,o.column);if(this.session.getUseSoftTabs())var f=u-a%u,l=s.stringRepeat(" ",f);else{var f=a%u;while(i[t.start.column]==" "&&f)t.start.column--,f--;this.selection.setSelectionRange(t),l="	"}return this.insert(l)},this.blockIndent=function(){var e=this.$getSelectedRows();this.session.indentRows(e.first,e.last,"	")},this.blockOutdent=function(){var e=this.session.getSelection();this.session.outdentRows(e.getRange())},this.sortLines=function(){var e=this.$getSelectedRows(),t=this.session,n=[];for(i=e.first;i<=e.last;i++)n.push(t.getLine(i));n.sort(function(e,t){return e.toLowerCase()<t.toLowerCase()?-1:e.toLowerCase()>t.toLowerCase()?1:0});var r=new p(0,0,0,0);for(var i=e.first;i<=e.last;i++){var s=t.getLine(i);r.start.row=i,r.end.row=i,r.end.column=s.length,t.replace(r,n[i-e.first])}},this.toggleCommentLines=function(){var e=this.session.getState(this.getCursorPosition().row),t=this.$getSelectedRows();this.session.getMode().toggleCommentLines(e,this.session,t.first,t.last)},this.toggleBlockComment=function(){var e=this.getCursorPosition(),t=this.session.getState(e.row),n=this.getSelectionRange();this.session.getMode().toggleBlockComment(t,this.session,n,e)},this.getNumberAt=function(e,t){var n=/[\-]?[0-9]+(?:\.[0-9]+)?/g;n.lastIndex=0;var r=this.session.getLine(e);while(n.lastIndex<t){var i=n.exec(r);if(i.index<=t&&i.index+i[0].length>=t){var s={value:i[0],start:i.index,end:i.index+i[0].length};return s}}return null},this.modifyNumber=function(e){var t=this.selection.getCursor().row,n=this.selection.getCursor().column,r=new p(t,n-1,t,n),i=this.session.getTextRange(r);if(!isNaN(parseFloat(i))&&isFinite(i)){var s=this.getNumberAt(t,n);if(s){var o=s.value.indexOf(".")>=0?s.start+s.value.indexOf(".")+1:s.end,u=s.start+s.value.length-o,a=parseFloat(s.value);a*=Math.pow(10,u),o!==s.end&&n<o?e*=Math.pow(10,s.end-n-1):e*=Math.pow(10,s.end-n),a+=e,a/=Math.pow(10,u);var f=a.toFixed(u),l=new p(t,s.start,t,s.end);this.session.replace(l,f),this.moveCursorTo(t,Math.max(s.start+1,n+f.length-s.value.length))}}},this.removeLines=function(){var e=this.$getSelectedRows(),t;e.first===0||e.last+1<this.session.getLength()?t=new p(e.first,0,e.last+1,0):t=new p(e.first-1,this.session.getLine(e.first-1).length,e.last,this.session.getLine(e.last).length),this.session.remove(t),this.clearSelection()},this.duplicateSelection=function(){var e=this.selection,t=this.session,n=e.getRange(),r=e.isBackwards();if(n.isEmpty()){var i=n.start.row;t.duplicateLines(i,i)}else{var s=r?n.start:n.end,o=t.insert(s,t.getTextRange(n),!1);n.start=s,n.end=o,e.setSelectionRange(n,r)}},this.moveLinesDown=function(){this.$moveLines(function(e,t){return this.session.moveLinesDown(e,t)})},this.moveLinesUp=function(){this.$moveLines(function(e,t){return this.session.moveLinesUp(e,t)})},this.moveText=function(e,t,n){return this.session.moveText(e,t,n)},this.copyLinesUp=function(){this.$moveLines(function(e,t){return this.session.duplicateLines(e,t),0})},this.copyLinesDown=function(){this.$moveLines(function(e,t){return this.session.duplicateLines(e,t)})},this.$moveLines=function(e){var t=this.selection;if(!t.inMultiSelectMode||this.inVirtualSelectionMode){var n=t.toOrientedRange(),r=this.$getSelectedRows(n),i=e.call(this,r.first,r.last);n.moveBy(i,0),t.fromOrientedRange(n)}else{var s=t.rangeList.ranges;t.rangeList.detach(this.session);for(var o=s.length;o--;){var u=o,r=s[o].collapseRows(),a=r.end.row,f=r.start.row;while(o--){r=s[o].collapseRows();if(!(f-r.end.row<=1))break;f=r.end.row}o++;var i=e.call(this,f,a);while(u>=o)s[u].moveBy(i,0),u--}t.fromOrientedRange(t.ranges[0]),t.rangeList.attach(this.session)}},this.$getSelectedRows=function(){var e=this.getSelectionRange().collapseRows();return{first:this.session.getRowFoldStart(e.start.row),last:this.session.getRowFoldEnd(e.end.row)}},this.onCompositionStart=function(e){this.renderer.showComposition(this.getCursorPosition())},this.onCompositionUpdate=function(e){this.renderer.setCompositionText(e)},this.onCompositionEnd=function(){this.renderer.hideComposition()},this.getFirstVisibleRow=function(){return this.renderer.getFirstVisibleRow()},this.getLastVisibleRow=function(){return this.renderer.getLastVisibleRow()},this.isRowVisible=function(e){return e>=this.getFirstVisibleRow()&&e<=this.getLastVisibleRow()},this.isRowFullyVisible=function(e){return e>=this.renderer.getFirstFullyVisibleRow()&&e<=this.renderer.getLastFullyVisibleRow()},this.$getVisibleRowCount=function(){return this.renderer.getScrollBottomRow()-this.renderer.getScrollTopRow()+1},this.$moveByPage=function(e,t){var n=this.renderer,r=this.renderer.layerConfig,i=e*Math.floor(r.height/r.lineHeight);this.$blockScrolling++,t===!0?this.selection.$moveSelection(function(){this.moveCursorBy(i,0)}):t===!1&&(this.selection.moveCursorBy(i,0),this.selection.clearSelection()),this.$blockScrolling--;var s=n.scrollTop;n.scrollBy(0,i*r.lineHeight),t!=null&&n.scrollCursorIntoView(null,.5),n.animateScrolling(s)},this.selectPageDown=function(){this.$moveByPage(1,!0)},this.selectPageUp=function(){this.$moveByPage(-1,!0)},this.gotoPageDown=function(){this.$moveByPage(1,!1)},this.gotoPageUp=function(){this.$moveByPage(-1,!1)},this.scrollPageDown=function(){this.$moveByPage(1)},this.scrollPageUp=function(){this.$moveByPage(-1)},this.scrollToRow=function(e){this.renderer.scrollToRow(e)},this.scrollToLine=function(e,t,n,r){this.renderer.scrollToLine(e,t,n,r)},this.centerSelection=function(){var e=this.getSelectionRange(),t={row:Math.floor(e.start.row+(e.end.row-e.start.row)/2),column:Math.floor(e.start.column+(e.end.column-e.start.column)/2)};this.renderer.alignCursor(t,.5)},this.getCursorPosition=function(){return this.selection.getCursor()},this.getCursorPositionScreen=function(){return this.session.documentToScreenPosition(this.getCursorPosition())},this.getSelectionRange=function(){return this.selection.getRange()},this.selectAll=function(){this.$blockScrolling+=1,this.selection.selectAll(),this.$blockScrolling-=1},this.clearSelection=function(){this.selection.clearSelection()},this.moveCursorTo=function(e,t){this.selection.moveCursorTo(e,t)},this.moveCursorToPosition=function(e){this.selection.moveCursorToPosition(e)},this.jumpToMatching=function(e){var t=this.getCursorPosition(),n=new y(this.session,t.row,t.column),r=n.getCurrentToken(),i=r;i||(i=n.stepForward());if(!i)return;var s,o=!1,u={},a=t.column-i.start,f,l={")":"(","(":"(","]":"[","[":"[","{":"{","}":"{"};do{if(i.value.match(/[{}()\[\]]/g))for(;a<i.value.length&&!o;a++){if(!l[i.value[a]])continue;f=l[i.value[a]]+"."+i.type.replace("rparen","lparen"),isNaN(u[f])&&(u[f]=0);switch(i.value[a]){case"(":case"[":case"{":u[f]++;break;case")":case"]":case"}":u[f]--,u[f]===-1&&(s="bracket",o=!0)}}else i&&i.type.indexOf("tag-name")!==-1&&(isNaN(u[i.value])&&(u[i.value]=0),r.value==="<"?u[i.value]++:r.value==="</"&&u[i.value]--,u[i.value]===-1&&(s="tag",o=!0));o||(r=i,i=n.stepForward(),a=0)}while(i&&!o);if(!s)return;var c;if(s==="bracket"){c=this.session.getBracketRange(t);if(!c){c=new p(n.getCurrentTokenRow(),n.getCurrentTokenColumn()+a-1,n.getCurrentTokenRow(),n.getCurrentTokenColumn()+a-1);if(!c)return;var h=c.start;h.row===t.row&&Math.abs(h.column-t.column)<2&&(c=this.session.getBracketRange(h))}}else if(s==="tag"){if(!i||i.type.indexOf("tag-name")===-1)return;var d=i.value,c=new p(n.getCurrentTokenRow(),n.getCurrentTokenColumn()-2,n.getCurrentTokenRow(),n.getCurrentTokenColumn()-2);if(c.compare(t.row,t.column)===0){o=!1;do i=r,r=n.stepBackward(),r&&(r.type.indexOf("tag-close")!==-1&&c.setEnd(n.getCurrentTokenRow(),n.getCurrentTokenColumn()+1),i.value===d&&i.type.indexOf("tag-name")!==-1&&(r.value==="<"?u[d]++:r.value==="</"&&u[d]--,u[d]===0&&(o=!0)));while(r&&!o)}if(i&&i.type.indexOf("tag-name")){var h=c.start;h.row==t.row&&Math.abs(h.column-t.column)<2&&(h=c.end)}}h=c&&c.cursor||h,h&&(e?c&&c.isEqual(this.getSelectionRange())?this.clearSelection():this.selection.selectTo(h.row,h.column):this.selection.moveTo(h.row,h.column))},this.gotoLine=function(e,t,n){this.selection.clearSelection(),this.session.unfold({row:e-1,column:t||0}),this.$blockScrolling+=1,this.exitMultiSelectMode&&this.exitMultiSelectMode(),this.moveCursorTo(e-1,t||0),this.$blockScrolling-=1,this.isRowFullyVisible(e-1)||this.scrollToLine(e-1,!0,n)},this.navigateTo=function(e,t){this.selection.moveTo(e,t)},this.navigateUp=function(e){if(this.selection.isMultiLine()&&!this.selection.isBackwards()){var t=this.selection.anchor.getPosition();return this.moveCursorToPosition(t)}this.selection.clearSelection(),this.selection.moveCursorBy(-e||-1,0)},this.navigateDown=function(e){if(this.selection.isMultiLine()&&this.selection.isBackwards()){var t=this.selection.anchor.getPosition();return this.moveCursorToPosition(t)}this.selection.clearSelection(),this.selection.moveCursorBy(e||1,0)},this.navigateLeft=function(e){if(!this.selection.isEmpty()){var t=this.getSelectionRange().start;this.moveCursorToPosition(t)}else{e=e||1;while(e--)this.selection.moveCursorLeft()}this.clearSelection()},this.navigateRight=function(e){if(!this.selection.isEmpty()){var t=this.getSelectionRange().end;this.moveCursorToPosition(t)}else{e=e||1;while(e--)this.selection.moveCursorRight()}this.clearSelection()},this.navigateLineStart=function(){this.selection.moveCursorLineStart(),this.clearSelection()},this.navigateLineEnd=function(){this.selection.moveCursorLineEnd(),this.clearSelection()},this.navigateFileEnd=function(){this.selection.moveCursorFileEnd(),this.clearSelection()},this.navigateFileStart=function(){this.selection.moveCursorFileStart(),this.clearSelection()},this.navigateWordRight=function(){this.selection.moveCursorWordRight(),this.clearSelection()},this.navigateWordLeft=function(){this.selection.moveCursorWordLeft(),this.clearSelection()},this.replace=function(e,t){t&&this.$search.set(t);var n=this.$search.find(this.session),r=0;return n?(this.$tryReplace(n,e)&&(r=1),n!==null&&(this.selection.setSelectionRange(n),this.renderer.scrollSelectionIntoView(n.start,n.end)),r):r},this.replaceAll=function(e,t){t&&this.$search.set(t);var n=this.$search.findAll(this.session),r=0;if(!n.length)return r;this.$blockScrolling+=1;var i=this.getSelectionRange();this.selection.moveTo(0,0);for(var s=n.length-1;s>=0;--s)this.$tryReplace(n[s],e)&&r++;return this.selection.setSelectionRange(i),this.$blockScrolling-=1,r},this.$tryReplace=function(e,t){var n=this.session.getTextRange(e);return t=this.$search.replace(n,t),t!==null?(e.end=this.session.replace(e,t),e):null},this.getLastSearchOptions=function(){return this.$search.getOptions()},this.find=function(e,t,n){t||(t={}),typeof e=="string"||e instanceof RegExp?t.needle=e:typeof e=="object"&&r.mixin(t,e);var i=this.selection.getRange();t.needle==null&&(e=this.session.getTextRange(i)||this.$search.$options.needle,e||(i=this.session.getWordRange(i.start.row,i.start.column),e=this.session.getTextRange(i)),this.$search.set({needle:e})),this.$search.set(t),t.start||this.$search.set({start:i});var s=this.$search.find(this.session);if(t.preventScroll)return s;if(s)return this.revealRange(s,n),s;t.backwards?i.start=i.end:i.end=i.start,this.selection.setRange(i)},this.findNext=function(e,t){this.find({skipCurrent:!0,backwards:!1},e,t)},this.findPrevious=function(e,t){this.find(e,{skipCurrent:!0,backwards:!0},t)},this.revealRange=function(e,t){this.$blockScrolling+=1,this.session.unfold(e),this.selection.setSelectionRange(e),this.$blockScrolling-=1;var n=this.renderer.scrollTop;this.renderer.scrollSelectionIntoView(e.start,e.end,.5),t!==!1&&this.renderer.animateScrolling(n)},this.undo=function(){this.$blockScrolling++,this.session.getUndoManager().undo(),this.$blockScrolling--,this.renderer.scrollCursorIntoView(null,.5)},this.redo=function(){this.$blockScrolling++,this.session.getUndoManager().redo(),this.$blockScrolling--,this.renderer.scrollCursorIntoView(null,.5)},this.destroy=function(){this.renderer.destroy(),this._signal("destroy",this)},this.setAutoScrollEditorIntoView=function(e){if(!e)return;var t,n=this,r=!1;this.$scrollAnchor||(this.$scrollAnchor=document.createElement("div"));var i=this.$scrollAnchor;i.style.cssText="position:absolute",this.container.insertBefore(i,this.container.firstChild);var s=this.on("changeSelection",function(){r=!0}),o=this.renderer.on("beforeRender",function(){r&&(t=n.renderer.container.getBoundingClientRect())}),u=this.renderer.on("afterRender",function(){if(r&&t&&n.isFocused()){var e=n.renderer,s=e.$cursorLayer.$pixelPos,o=e.layerConfig,u=s.top-o.offset;s.top>=0&&u+t.top<0?r=!0:s.top<o.height&&s.top+t.top+o.lineHeight>window.innerHeight?r=!1:r=null,r!=null&&(i.style.top=u+"px",i.style.left=s.left+"px",i.style.height=o.lineHeight+"px",i.scrollIntoView(r)),r=t=null}});this.setAutoScrollEditorIntoView=function(e){if(e)return;delete this.setAutoScrollEditorIntoView,this.removeEventListener("changeSelection",s),this.renderer.removeEventListener("afterRender",u),this.renderer.removeEventListener("beforeRender",o)}},this.$resetCursorStyle=function(){var e=this.$cursorStyle||"ace",t=this.renderer.$cursorLayer;if(!t)return;t.setSmoothBlinking(/smooth/.test(e)),t.isBlinking=!this.$readOnly&&e!="wide",i.setCssClass(t.element,"ace_slim-cursors",/slim/.test(e))}}).call(b.prototype),g.defineOptions(b.prototype,"editor",{selectionStyle:{set:function(e){this.onSelectionChange(),this._signal("changeSelectionStyle",{data:e})},initialValue:"line"},highlightActiveLine:{set:function(){this.$updateHighlightActiveLine()},initialValue:!0},highlightSelectedWord:{set:function(e){this.$onSelectionChange()},initialValue:!0},readOnly:{set:function(e){this.$resetCursorStyle()},initialValue:!1},cursorStyle:{set:function(e){this.$resetCursorStyle()},values:["ace","slim","smooth","wide"],initialValue:"ace"},mergeUndoDeltas:{values:[!1,!0,"always"],initialValue:!0},behavioursEnabled:{initialValue:!0},wrapBehavioursEnabled:{initialValue:!0},autoScrollEditorIntoView:{set:function(e){this.setAutoScrollEditorIntoView(e)}},hScrollBarAlwaysVisible:"renderer",vScrollBarAlwaysVisible:"renderer",highlightGutterLine:"renderer",animatedScroll:"renderer",showInvisibles:"renderer",showPrintMargin:"renderer",printMarginColumn:"renderer",printMargin:"renderer",fadeFoldWidgets:"renderer",showFoldWidgets:"renderer",showLineNumbers:"renderer",showGutter:"renderer",displayIndentGuides:"renderer",fontSize:"renderer",fontFamily:"renderer",maxLines:"renderer",minLines:"renderer",scrollPastEnd:"renderer",fixedWidthGutter:"renderer",theme:"renderer",scrollSpeed:"$mouseHandler",dragDelay:"$mouseHandler",dragEnabled:"$mouseHandler",focusTimout:"$mouseHandler",tooltipFollowsMouse:"$mouseHandler",firstLineNumber:"session",overwrite:"session",newLineMode:"session",useWorker:"session",useSoftTabs:"session",tabSize:"session",wrap:"session",foldStyle:"session",mode:"session"}),t.Editor=b}),ace.define("ace/undomanager",["require","exports","module"],function(e,t,n){"use strict";var r=function(){this.reset()};(function(){this.execute=function(e){var t=e.args[0];this.$doc=e.args[1],e.merge&&this.hasUndo()&&(this.dirtyCounter--,t=this.$undoStack.pop().concat(t)),this.$undoStack.push(t),this.$redoStack=[],this.dirtyCounter<0&&(this.dirtyCounter=NaN),this.dirtyCounter++},this.undo=function(e){var t=this.$undoStack.pop(),n=null;return t&&(n=this.$doc.undoChanges(t,e),this.$redoStack.push(t),this.dirtyCounter--),n},this.redo=function(e){var t=this.$redoStack.pop(),n=null;return t&&(n=this.$doc.redoChanges(t,e),this.$undoStack.push(t),this.dirtyCounter++),n},this.reset=function(){this.$undoStack=[],this.$redoStack=[],this.dirtyCounter=0},this.hasUndo=function(){return this.$undoStack.length>0},this.hasRedo=function(){return this.$redoStack.length>0},this.markClean=function(){this.dirtyCounter=0},this.isClean=function(){return this.dirtyCounter===0}}).call(r.prototype),t.UndoManager=r}),ace.define("ace/layer/gutter",["require","exports","module","ace/lib/dom","ace/lib/oop","ace/lib/lang","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("../lib/dom"),i=e("../lib/oop"),s=e("../lib/lang"),o=e("../lib/event_emitter").EventEmitter,u=function(e){this.element=r.createElement("div"),this.element.className="ace_layer ace_gutter-layer",e.appendChild(this.element),this.setShowFoldWidgets(this.$showFoldWidgets),this.gutterWidth=0,this.$annotations=[],this.$updateAnnotations=this.$updateAnnotations.bind(this),this.$cells=[]};(function(){i.implement(this,o),this.setSession=function(e){this.session&&this.session.removeEventListener("change",this.$updateAnnotations),this.session=e,e.on("change",this.$updateAnnotations)},this.addGutterDecoration=function(e,t){window.console&&console.warn&&console.warn("deprecated use session.addGutterDecoration"),this.session.addGutterDecoration(e,t)},this.removeGutterDecoration=function(e,t){window.console&&console.warn&&console.warn("deprecated use session.removeGutterDecoration"),this.session.removeGutterDecoration(e,t)},this.setAnnotations=function(e){this.$annotations=[];for(var t=0;t<e.length;t++){var n=e[t],r=n.row,i=this.$annotations[r];i||(i=this.$annotations[r]={text:[]});var o=n.text;o=o?s.escapeHTML(o):n.html||"",i.text.indexOf(o)===-1&&i.text.push(o);var u=n.type;u=="error"?i.className=" ace_error":u=="warning"&&i.className!=" ace_error"?i.className=" ace_warning":u=="info"&&!i.className&&(i.className=" ace_info")}},this.$updateAnnotations=function(e){if(!this.$annotations.length)return;var t=e.data,n=t.range,r=n.start.row,i=n.end.row-r;if(i!==0)if(t.action=="removeText"||t.action=="removeLines")this.$annotations.splice(r,i+1,null);else{var s=new Array(i+1);s.unshift(r,1),this.$annotations.splice.apply(this.$annotations,s)}},this.update=function(e){var t=this.session,n=e.firstRow,i=Math.min(e.lastRow+e.gutterOffset,t.getLength()-1),s=t.getNextFoldLine(n),o=s?s.start.row:Infinity,u=this.$showFoldWidgets&&t.foldWidgets,a=t.$breakpoints,f=t.$decorations,l=t.$firstLineNumber,c=0,h=t.gutterRenderer||this.$renderer,p=null,d=-1,v=n;for(;;){v>o&&(v=s.end.row+1,s=t.getNextFoldLine(v,s),o=s?s.start.row:Infinity);if(v>i){while(this.$cells.length>d+1)p=this.$cells.pop(),this.element.removeChild(p.element);break}p=this.$cells[++d],p||(p={element:null,textNode:null,foldWidget:null},p.element=r.createElement("div"),p.textNode=document.createTextNode(""),p.element.appendChild(p.textNode),this.element.appendChild(p.element),this.$cells[d]=p);var m="ace_gutter-cell ";a[v]&&(m+=a[v]),f[v]&&(m+=f[v]),this.$annotations[v]&&(m+=this.$annotations[v].className),p.element.className!=m&&(p.element.className=m);var g=t.getRowLength(v)*e.lineHeight+"px";g!=p.element.style.height&&(p.element.style.height=g);if(u){var y=u[v];y==null&&(y=u[v]=t.getFoldWidget(v))}if(y){p.foldWidget||(p.foldWidget=r.createElement("span"),p.element.appendChild(p.foldWidget));var m="ace_fold-widget ace_"+y;y=="start"&&v==o&&v<s.end.row?m+=" ace_closed":m+=" ace_open",p.foldWidget.className!=m&&(p.foldWidget.className=m);var g=e.lineHeight+"px";p.foldWidget.style.height!=g&&(p.foldWidget.style.height=g)}else p.foldWidget&&(p.element.removeChild(p.foldWidget),p.foldWidget=null);var b=c=h?h.getText(t,v):v+l;b!=p.textNode.data&&(p.textNode.data=b),v++}this.element.style.height=e.minHeight+"px";if(this.$fixedWidth||t.$useWrapMode)c=t.getLength()+l;var w=h?h.getWidth(t,c,e):c.toString().length*e.characterWidth,E=this.$padding||this.$computePadding();w+=E.left+E.right,w!==this.gutterWidth&&!isNaN(w)&&(this.gutterWidth=w,this.element.style.width=Math.ceil(this.gutterWidth)+"px",this._emit("changeGutterWidth",w))},this.$fixedWidth=!1,this.$showLineNumbers=!0,this.$renderer="",this.setShowLineNumbers=function(e){this.$renderer=!e&&{getWidth:function(){return""},getText:function(){return""}}},this.getShowLineNumbers=function(){return this.$showLineNumbers},this.$showFoldWidgets=!0,this.setShowFoldWidgets=function(e){e?r.addCssClass(this.element,"ace_folding-enabled"):r.removeCssClass(this.element,"ace_folding-enabled"),this.$showFoldWidgets=e,this.$padding=null},this.getShowFoldWidgets=function(){return this.$showFoldWidgets},this.$computePadding=function(){if(!this.element.firstChild)return{left:0,right:0};var e=r.computedStyle(this.element.firstChild);return this.$padding={},this.$padding.left=parseInt(e.paddingLeft)+1||0,this.$padding.right=parseInt(e.paddingRight)||0,this.$padding},this.getRegion=function(e){var t=this.$padding||this.$computePadding(),n=this.element.getBoundingClientRect();if(e.x<t.left+n.left)return"markers";if(this.$showFoldWidgets&&e.x>n.right-t.right)return"foldWidgets"}}).call(u.prototype),t.Gutter=u}),ace.define("ace/layer/marker",["require","exports","module","ace/range","ace/lib/dom"],function(e,t,n){"use strict";var r=e("../range").Range,i=e("../lib/dom"),s=function(e){this.element=i.createElement("div"),this.element.className="ace_layer ace_marker-layer",e.appendChild(this.element)};(function(){this.$padding=0,this.setPadding=function(e){this.$padding=e},this.setSession=function(e){this.session=e},this.setMarkers=function(e){this.markers=e},this.update=function(e){var e=e||this.config;if(!e)return;this.config=e;var t=[];for(var n in this.markers){var r=this.markers[n];if(!r.range){r.update(t,this,this.session,e);continue}var s=r.range.clipRows(e.firstRow,e.lastRow);if(s.isEmpty())continue;s=s.toScreenRange(this.session);if(r.renderer){var o=this.$getTop(s.start.row,e),u=this.$padding+s.start.column*e.characterWidth;r.renderer(t,s,u,o,e)}else r.type=="fullLine"?this.drawFullLineMarker(t,s,r.clazz,e):r.type=="screenLine"?this.drawScreenLineMarker(t,s,r.clazz,e):s.isMultiLine()?r.type=="text"?this.drawTextMarker(t,s,r.clazz,e):this.drawMultiLineMarker(t,s,r.clazz,e):this.drawSingleLineMarker(t,s,r.clazz+" ace_start",e)}this.element=i.setInnerHtml(this.element,t.join(""))},this.$getTop=function(e,t){return(e-t.firstRowScreen)*t.lineHeight},this.drawTextMarker=function(e,t,n,i,s){var o=t.start.row,u=new r(o,t.start.column,o,this.session.getScreenLastRowColumn(o));this.drawSingleLineMarker(e,u,n+" ace_start",i,1,s),o=t.end.row,u=new r(o,0,o,t.end.column),this.drawSingleLineMarker(e,u,n,i,0,s);for(o=t.start.row+1;o<t.end.row;o++)u.start.row=o,u.end.row=o,u.end.column=this.session.getScreenLastRowColumn(o),this.drawSingleLineMarker(e,u,n,i,1,s)},this.drawMultiLineMarker=function(e,t,n,r,i){var s=this.$padding,o=r.lineHeight,u=this.$getTop(t.start.row,r),a=s+t.start.column*r.characterWidth;i=i||"",e.push("<div class='",n," ace_start' style='","height:",o,"px;","right:0;","top:",u,"px;","left:",a,"px;",i,"'></div>"),u=this.$getTop(t.end.row,r);var f=t.end.column*r.characterWidth;e.push("<div class='",n,"' style='","height:",o,"px;","width:",f,"px;","top:",u,"px;","left:",s,"px;",i,"'></div>"),o=(t.end.row-t.start.row-1)*r.lineHeight;if(o<0)return;u=this.$getTop(t.start.row+1,r),e.push("<div class='",n,"' style='","height:",o,"px;","right:0;","top:",u,"px;","left:",s,"px;",i,"'></div>")},this.drawSingleLineMarker=function(e,t,n,r,i,s){var o=r.lineHeight,u=(t.end.column+(i||0)-t.start.column)*r.characterWidth,a=this.$getTop(t.start.row,r),f=this.$padding+t.start.column*r.characterWidth;e.push("<div class='",n,"' style='","height:",o,"px;","width:",u,"px;","top:",a,"px;","left:",f,"px;",s||"","'></div>")},this.drawFullLineMarker=function(e,t,n,r,i){var s=this.$getTop(t.start.row,r),o=r.lineHeight;t.start.row!=t.end.row&&(o+=this.$getTop(t.end.row,r)-s),e.push("<div class='",n,"' style='","height:",o,"px;","top:",s,"px;","left:0;right:0;",i||"","'></div>")},this.drawScreenLineMarker=function(e,t,n,r,i){var s=this.$getTop(t.start.row,r),o=r.lineHeight;e.push("<div class='",n,"' style='","height:",o,"px;","top:",s,"px;","left:0;right:0;",i||"","'></div>")}}).call(s.prototype),t.Marker=s}),ace.define("ace/layer/text",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/lib/lang","ace/lib/useragent","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("../lib/dom"),s=e("../lib/lang"),o=e("../lib/useragent"),u=e("../lib/event_emitter").EventEmitter,a=function(e){this.element=i.createElement("div"),this.element.className="ace_layer ace_text-layer",e.appendChild(this.element),this.$updateEolChar=this.$updateEolChar.bind(this)};(function(){r.implement(this,u),this.EOF_CHAR="\u00b6",this.EOL_CHAR_LF="\u00ac",this.EOL_CHAR_CRLF="\u00a4",this.EOL_CHAR=this.EOL_CHAR_LF,this.TAB_CHAR="\u2192",this.SPACE_CHAR="\u00b7",this.$padding=0,this.$updateEolChar=function(){var e=this.session.doc.getNewLineCharacter()=="\n"?this.EOL_CHAR_LF:this.EOL_CHAR_CRLF;if(this.EOL_CHAR!=e)return this.EOL_CHAR=e,!0},this.setPadding=function(e){this.$padding=e,this.element.style.padding="0 "+e+"px"},this.getLineHeight=function(){return this.$fontMetrics.$characterSize.height||0},this.getCharacterWidth=function(){return this.$fontMetrics.$characterSize.width||0},this.$setFontMetrics=function(e){this.$fontMetrics=e,this.$fontMetrics.on("changeCharacterSize",function(e){this._signal("changeCharacterSize",e)}.bind(this)),this.$pollSizeChanges()},this.checkForSizeChanges=function(){this.$fontMetrics.checkForSizeChanges()},this.$pollSizeChanges=function(){return this.$pollSizeChangesTimer=this.$fontMetrics.$pollSizeChanges()},this.setSession=function(e){this.session=e,this.$computeTabString()},this.showInvisibles=!1,this.setShowInvisibles=function(e){return this.showInvisibles==e?!1:(this.showInvisibles=e,this.$computeTabString(),!0)},this.displayIndentGuides=!0,this.setDisplayIndentGuides=function(e){return this.displayIndentGuides==e?!1:(this.displayIndentGuides=e,this.$computeTabString(),!0)},this.$tabStrings=[],this.onChangeTabSize=this.$computeTabString=function(){var e=this.session.getTabSize();this.tabSize=e;var t=this.$tabStrings=[0];for(var n=1;n<e+1;n++)this.showInvisibles?t.push("<span class='ace_invisible ace_invisible_tab'>"+this.TAB_CHAR+s.stringRepeat("\u00a0",n-1)+"</span>"):t.push(s.stringRepeat("\u00a0",n));if(this.displayIndentGuides){this.$indentGuideRe=/\s\S| \t|\t |\s$/;var r="ace_indent-guide",i="",o="";if(this.showInvisibles){r+=" ace_invisible",i=" ace_invisible_space",o=" ace_invisible_tab";var u=s.stringRepeat(this.SPACE_CHAR,this.tabSize),a=this.TAB_CHAR+s.stringRepeat("\u00a0",this.tabSize-1)}else var u=s.stringRepeat("\u00a0",this.tabSize),a=u;this.$tabStrings[" "]="<span class='"+r+i+"'>"+u+"</span>",this.$tabStrings["	"]="<span class='"+r+o+"'>"+a+"</span>"}},this.updateLines=function(e,t,n){(this.config.lastRow!=e.lastRow||this.config.firstRow!=e.firstRow)&&this.scrollLines(e),this.config=e;var r=Math.max(t,e.firstRow),s=Math.min(n,e.lastRow),o=this.element.childNodes,u=0;for(var a=e.firstRow;a<r;a++){var f=this.session.getFoldLine(a);if(f){if(f.containsRow(r)){r=f.start.row;break}a=f.end.row}u++}var a=r,f=this.session.getNextFoldLine(a),l=f?f.start.row:Infinity;for(;;){a>l&&(a=f.end.row+1,f=this.session.getNextFoldLine(a,f),l=f?f.start.row:Infinity);if(a>s)break;var c=o[u++];if(c){var h=[];this.$renderLine(h,a,!this.$useLineGroups(),a==l?f:!1),c.style.height=e.lineHeight*this.session.getRowLength(a)+"px",i.setInnerHtml(c,h.join(""))}a++}},this.scrollLines=function(e){var t=this.config;this.config=e;if(!t||t.lastRow<e.firstRow)return this.update(e);if(e.lastRow<t.firstRow)return this.update(e);var n=this.element;if(t.firstRow<e.firstRow)for(var r=this.session.getFoldedRowCount(t.firstRow,e.firstRow-1);r>0;r--)n.removeChild(n.firstChild);if(t.lastRow>e.lastRow)for(var r=this.session.getFoldedRowCount(e.lastRow+1,t.lastRow);r>0;r--)n.removeChild(n.lastChild);if(e.firstRow<t.firstRow){var i=this.$renderLinesFragment(e,e.firstRow,t.firstRow-1);n.firstChild?n.insertBefore(i,n.firstChild):n.appendChild(i)}if(e.lastRow>t.lastRow){var i=this.$renderLinesFragment(e,t.lastRow+1,e.lastRow);n.appendChild(i)}},this.$renderLinesFragment=function(e,t,n){var r=this.element.ownerDocument.createDocumentFragment(),s=t,o=this.session.getNextFoldLine(s),u=o?o.start.row:Infinity;for(;;){s>u&&(s=o.end.row+1,o=this.session.getNextFoldLine(s,o),u=o?o.start.row:Infinity);if(s>n)break;var a=i.createElement("div"),f=[];this.$renderLine(f,s,!1,s==u?o:!1),a.innerHTML=f.join("");if(this.$useLineGroups())a.className="ace_line_group",r.appendChild(a),a.style.height=e.lineHeight*this.session.getRowLength(s)+"px";else while(a.firstChild)r.appendChild(a.firstChild);s++}return r},this.update=function(e){this.config=e;var t=[],n=e.firstRow,r=e.lastRow,s=n,o=this.session.getNextFoldLine(s),u=o?o.start.row:Infinity;for(;;){s>u&&(s=o.end.row+1,o=this.session.getNextFoldLine(s,o),u=o?o.start.row:Infinity);if(s>r)break;this.$useLineGroups()&&t.push("<div class='ace_line_group' style='height:",e.lineHeight*this.session.getRowLength(s),"px'>"),this.$renderLine(t,s,!1,s==u?o:!1),this.$useLineGroups()&&t.push("</div>"),s++}this.element=i.setInnerHtml(this.element,t.join(""))},this.$textToken={text:!0,rparen:!0,lparen:!0},this.$renderToken=function(e,t,n,r){var i=this,o=/\t|&|<|( +)|([\x00-\x1f\x80-\xa0\u1680\u180E\u2000-\u200f\u2028\u2029\u202F\u205F\u3000\uFEFF])|[\u1100-\u115F\u11A3-\u11A7\u11FA-\u11FF\u2329-\u232A\u2E80-\u2E99\u2E9B-\u2EF3\u2F00-\u2FD5\u2FF0-\u2FFB\u3000-\u303E\u3041-\u3096\u3099-\u30FF\u3105-\u312D\u3131-\u318E\u3190-\u31BA\u31C0-\u31E3\u31F0-\u321E\u3220-\u3247\u3250-\u32FE\u3300-\u4DBF\u4E00-\uA48C\uA490-\uA4C6\uA960-\uA97C\uAC00-\uD7A3\uD7B0-\uD7C6\uD7CB-\uD7FB\uF900-\uFAFF\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE66\uFE68-\uFE6B\uFF01-\uFF60\uFFE0-\uFFE6]/g,u=function(e,n,r,o,u){if(n)return i.showInvisibles?"<span class='ace_invisible ace_invisible_space'>"+s.stringRepeat(i.SPACE_CHAR,e.length)+"</span>":s.stringRepeat("\u00a0",e.length);if(e=="&")return"&#38;";if(e=="<")return"&#60;";if(e=="	"){var a=i.session.getScreenTabSize(t+o);return t+=a-1,i.$tabStrings[a]}if(e=="\u3000"){var f=i.showInvisibles?"ace_cjk ace_invisible ace_invisible_space":"ace_cjk",l=i.showInvisibles?i.SPACE_CHAR:"";return t+=1,"<span class='"+f+"' style='width:"+i.config.characterWidth*2+"px'>"+l+"</span>"}return r?"<span class='ace_invisible ace_invisible_space ace_invalid'>"+i.SPACE_CHAR+"</span>":(t+=1,"<span class='ace_cjk' style='width:"+i.config.characterWidth*2+"px'>"+e+"</span>")},a=r.replace(o,u);if(!this.$textToken[n.type]){var f="ace_"+n.type.replace(/\./g," ace_"),l="";n.type=="fold"&&(l=" style='width:"+n.value.length*this.config.characterWidth+"px;' "),e.push("<span class='",f,"'",l,">",a,"</span>")}else e.push(a);return t+r.length},this.renderIndentGuide=function(e,t,n){var r=t.search(this.$indentGuideRe);return r<=0||r>=n?t:t[0]==" "?(r-=r%this.tabSize,e.push(s.stringRepeat(this.$tabStrings[" "],r/this.tabSize)),t.substr(r)):t[0]=="	"?(e.push(s.stringRepeat(this.$tabStrings["	"],r)),t.substr(r)):t},this.$renderWrappedLine=function(e,t,n,r){var i=0,s=0,o=n[0],u=0;for(var a=0;a<t.length;a++){var f=t[a],l=f.value;if(a==0&&this.displayIndentGuides){i=l.length,l=this.renderIndentGuide(e,l,o);if(!l)continue;i-=l.length}if(i+l.length<o)u=this.$renderToken(e,u,f,l),i+=l.length;else{while(i+l.length>=o)u=this.$renderToken(e,u,f,l.substring(0,o-i)),l=l.substring(o-i),i=o,r||e.push("</div>","<div class='ace_line' style='height:",this.config.lineHeight,"px'>"),s++,u=0,o=n[s]||Number.MAX_VALUE;l.length!=0&&(i+=l.length,u=this.$renderToken(e,u,f,l))}}},this.$renderSimpleLine=function(e,t){var n=0,r=t[0],i=r.value;this.displayIndentGuides&&(i=this.renderIndentGuide(e,i)),i&&(n=this.$renderToken(e,n,r,i));for(var s=1;s<t.length;s++)r=t[s],i=r.value,n=this.$renderToken(e,n,r,i)},this.$renderLine=function(e,t,n,r){!r&&r!=0&&(r=this.session.getFoldLine(t));if(r)var i=this.$getFoldLineTokens(t,r);else var i=this.session.getTokens(t);n||e.push("<div class='ace_line' style='height:",this.config.lineHeight*(this.$useLineGroups()?1:this.session.getRowLength(t)),"px'>");if(i.length){var s=this.session.getRowSplitData(t);s&&s.length?this.$renderWrappedLine(e,i,s,n):this.$renderSimpleLine(e,i)}this.showInvisibles&&(r&&(t=r.end.row),e.push("<span class='ace_invisible ace_invisible_eol'>",t==this.session.getLength()-1?this.EOF_CHAR:this.EOL_CHAR,"</span>")),n||e.push("</div>")},this.$getFoldLineTokens=function(e,t){function i(e,t,n){var i=0,s=0;while(s+e[i].value.length<t){s+=e[i].value.length,i++;if(i==e.length)return}if(s!=t){var o=e[i].value.substring(t-s);o.length>n-t&&(o=o.substring(0,n-t)),r.push({type:e[i].type,value:o}),s=t+o.length,i+=1}while(s<n&&i<e.length){var o=e[i].value;o.length+s>n?r.push({type:e[i].type,value:o.substring(0,n-s)}):r.push(e[i]),s+=o.length,i+=1}}var n=this.session,r=[],s=n.getTokens(e);return t.walk(function(e,t,o,u,a){e!=null?r.push({type:"fold",value:e}):(a&&(s=n.getTokens(t)),s.length&&i(s,u,o))},t.end.row,this.session.getLine(t.end.row).length),r},this.$useLineGroups=function(){return this.session.getUseWrapMode()},this.destroy=function(){clearInterval(this.$pollSizeChangesTimer),this.$measureNode&&this.$measureNode.parentNode.removeChild(this.$measureNode),delete this.$measureNode}}).call(a.prototype),t.Text=a}),ace.define("ace/layer/cursor",["require","exports","module","ace/lib/dom"],function(e,t,n){"use strict";var r=e("../lib/dom"),i,s=function(e){this.element=r.createElement("div"),this.element.className="ace_layer ace_cursor-layer",e.appendChild(this.element),i===undefined&&(i="opacity"in this.element),this.isVisible=!1,this.isBlinking=!0,this.blinkInterval=1e3,this.smoothBlinking=!1,this.cursors=[],this.cursor=this.addCursor(),r.addCssClass(this.element,"ace_hidden-cursors"),this.$updateCursors=this.$updateVisibility.bind(this)};(function(){this.$updateVisibility=function(e){var t=this.cursors;for(var n=t.length;n--;)t[n].style.visibility=e?"":"hidden"},this.$updateOpacity=function(e){var t=this.cursors;for(var n=t.length;n--;)t[n].style.opacity=e?"":"0"},this.$padding=0,this.setPadding=function(e){this.$padding=e},this.setSession=function(e){this.session=e},this.setBlinking=function(e){e!=this.isBlinking&&(this.isBlinking=e,this.restartTimer())},this.setBlinkInterval=function(e){e!=this.blinkInterval&&(this.blinkInterval=e,this.restartTimer())},this.setSmoothBlinking=function(e){e!=this.smoothBlinking&&!i&&(this.smoothBlinking=e,r.setCssClass(this.element,"ace_smooth-blinking",e),this.$updateCursors(!0),this.$updateCursors=(e?this.$updateOpacity:this.$updateVisibility).bind(this),this.restartTimer())},this.addCursor=function(){var e=r.createElement("div");return e.className="ace_cursor",this.element.appendChild(e),this.cursors.push(e),e},this.removeCursor=function(){if(this.cursors.length>1){var e=this.cursors.pop();return e.parentNode.removeChild(e),e}},this.hideCursor=function(){this.isVisible=!1,r.addCssClass(this.element,"ace_hidden-cursors"),this.restartTimer()},this.showCursor=function(){this.isVisible=!0,r.removeCssClass(this.element,"ace_hidden-cursors"),this.restartTimer()},this.restartTimer=function(){var e=this.$updateCursors;clearInterval(this.intervalId),clearTimeout(this.timeoutId),this.smoothBlinking&&r.removeCssClass(this.element,"ace_smooth-blinking"),e(!0);if(!this.isBlinking||!this.blinkInterval||!this.isVisible)return;this.smoothBlinking&&setTimeout(function(){r.addCssClass(this.element,"ace_smooth-blinking")}.bind(this));var t=function(){this.timeoutId=setTimeout(function(){e(!1)},.6*this.blinkInterval)}.bind(this);this.intervalId=setInterval(function(){e(!0),t()},this.blinkInterval),t()},this.getPixelPosition=function(e,t){if(!this.config||!this.session)return{left:0,top:0};e||(e=this.session.selection.getCursor());var n=this.session.documentToScreenPosition(e),r=this.$padding+n.column*this.config.characterWidth,i=(n.row-(t?this.config.firstRowScreen:0))*this.config.lineHeight;return{left:r,top:i}},this.update=function(e){this.config=e;var t=this.session.$selectionMarkers,n=0,r=0;if(t===undefined||t.length===0)t=[{cursor:null}];for(var n=0,i=t.length;n<i;n++){var s=this.getPixelPosition(t[n].cursor,!0);if((s.top>e.height+e.offset||s.top<0)&&n>1)continue;var o=(this.cursors[r++]||this.addCursor()).style;o.left=s.left+"px",o.top=s.top+"px",o.width=e.characterWidth+"px",o.height=e.lineHeight+"px"}while(this.cursors.length>r)this.removeCursor();var u=this.session.getOverwrite();this.$setOverwrite(u),this.$pixelPos=s,this.restartTimer()},this.$setOverwrite=function(e){e!=this.overwrite&&(this.overwrite=e,e?r.addCssClass(this.element,"ace_overwrite-cursors"):r.removeCssClass(this.element,"ace_overwrite-cursors"))},this.destroy=function(){clearInterval(this.intervalId),clearTimeout(this.timeoutId)}}).call(s.prototype),t.Cursor=s}),ace.define("ace/scrollbar",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/lib/event","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/dom"),s=e("./lib/event"),o=e("./lib/event_emitter").EventEmitter,u=function(e){this.element=i.createElement("div"),this.element.className="ace_scrollbar ace_scrollbar"+this.classSuffix,this.inner=i.createElement("div"),this.inner.className="ace_scrollbar-inner",this.element.appendChild(this.inner),e.appendChild(this.element),this.setVisible(!1),this.skipEvent=!1,s.addListener(this.element,"scroll",this.onScroll.bind(this)),s.addListener(this.element,"mousedown",s.preventDefault)};(function(){r.implement(this,o),this.setVisible=function(e){this.element.style.display=e?"":"none",this.isVisible=e}}).call(u.prototype);var a=function(e,t){u.call(this,e),this.scrollTop=0,t.$scrollbarWidth=this.width=i.scrollbarWidth(e.ownerDocument),this.inner.style.width=this.element.style.width=(this.width||15)+5+"px"};r.inherits(a,u),function(){this.classSuffix="-v",this.onScroll=function(){this.skipEvent||(this.scrollTop=this.element.scrollTop,this._emit("scroll",{data:this.scrollTop})),this.skipEvent=!1},this.getWidth=function(){return this.isVisible?this.width:0},this.setHeight=function(e){this.element.style.height=e+"px"},this.setInnerHeight=function(e){this.inner.style.height=e+"px"},this.setScrollHeight=function(e){this.inner.style.height=e+"px"},this.setScrollTop=function(e){this.scrollTop!=e&&(this.skipEvent=!0,this.scrollTop=this.element.scrollTop=e)}}.call(a.prototype);var f=function(e,t){u.call(this,e),this.scrollLeft=0,this.height=t.$scrollbarWidth,this.inner.style.height=this.element.style.height=(this.height||15)+5+"px"};r.inherits(f,u),function(){this.classSuffix="-h",this.onScroll=function(){this.skipEvent||(this.scrollLeft=this.element.scrollLeft,this._emit("scroll",{data:this.scrollLeft})),this.skipEvent=!1},this.getHeight=function(){return this.isVisible?this.height:0},this.setWidth=function(e){this.element.style.width=e+"px"},this.setInnerWidth=function(e){this.inner.style.width=e+"px"},this.setScrollWidth=function(e){this.inner.style.width=e+"px"},this.setScrollLeft=function(e){this.scrollLeft!=e&&(this.skipEvent=!0,this.scrollLeft=this.element.scrollLeft=e)}}.call(f.prototype),t.ScrollBar=a,t.ScrollBarV=a,t.ScrollBarH=f,t.VScrollBar=a,t.HScrollBar=f}),ace.define("ace/renderloop",["require","exports","module","ace/lib/event"],function(e,t,n){"use strict";var r=e("./lib/event"),i=function(e,t){this.onRender=e,this.pending=!1,this.changes=0,this.window=t||window};(function(){this.schedule=function(e){this.changes=this.changes|e;if(!this.pending&&this.changes){this.pending=!0;var t=this;r.nextFrame(function(){t.pending=!1;var e;while(e=t.changes)t.changes=0,t.onRender(e)},this.window)}}}).call(i.prototype),t.RenderLoop=i}),ace.define("ace/layer/font_metrics",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/lib/lang","ace/lib/useragent","ace/lib/event_emitter"],function(e,t,n){var r=e("../lib/oop"),i=e("../lib/dom"),s=e("../lib/lang"),o=e("../lib/useragent"),u=e("../lib/event_emitter").EventEmitter,a=0,f=t.FontMetrics=function(e,t){this.el=i.createElement("div"),this.$setMeasureNodeStyles(this.el.style,!0),this.$main=i.createElement("div"),this.$setMeasureNodeStyles(this.$main.style),this.$measureNode=i.createElement("div"),this.$setMeasureNodeStyles(this.$measureNode.style),this.el.appendChild(this.$main),this.el.appendChild(this.$measureNode),e.appendChild(this.el),a||this.$testFractionalRect(),this.$measureNode.innerHTML=s.stringRepeat("X",a),this.$characterSize={width:0,height:0},this.checkForSizeChanges()};(function(){r.implement(this,u),this.$characterSize={width:0,height:0},this.$testFractionalRect=function(){var e=i.createElement("div");this.$setMeasureNodeStyles(e.style),e.style.width="0.2px",document.documentElement.appendChild(e);var t=e.getBoundingClientRect().width;t>0&&t<1?a=1:a=100,e.parentNode.removeChild(e)},this.$setMeasureNodeStyles=function(e,t){e.width=e.height="auto",e.left=e.top="-100px",e.visibility="hidden",e.position="fixed",e.whiteSpace="pre",o.isIE<8?e["font-family"]="inherit":e.font="inherit",e.overflow=t?"hidden":"visible"},this.checkForSizeChanges=function(){var e=this.$measureSizes();if(e&&(this.$characterSize.width!==e.width||this.$characterSize.height!==e.height)){this.$measureNode.style.fontWeight="bold";var t=this.$measureSizes();this.$measureNode.style.fontWeight="",this.$characterSize=e,this.charSizes=Object.create(null),this.allowBoldFonts=t&&t.width===e.width&&t.height===e.height,this._emit("changeCharacterSize",{data:e})}},this.$pollSizeChanges=function(){if(this.$pollSizeChangesTimer)return this.$pollSizeChangesTimer;var e=this;return this.$pollSizeChangesTimer=setInterval(function(){e.checkForSizeChanges()},500)},this.setPolling=function(e){e?this.$pollSizeChanges():this.$pollSizeChangesTimer&&this.$pollSizeChangesTimer},this.$measureSizes=function(){if(a===1)var e=this.$measureNode.getBoundingClientRect(),t={height:e.height,width:e.width};else var t={height:this.$measureNode.clientHeight,width:this.$measureNode.clientWidth/a};return t.width===0||t.height===0?null:t},this.$measureCharWidth=function(e){this.$main.innerHTML=s.stringRepeat(e,a);var t=this.$main.getBoundingClientRect();return t.width/a},this.getCharacterWidth=function(e){var t=this.charSizes[e];return t===undefined&&(this.charSizes[e]=this.$measureCharWidth(e)/this.$characterSize.width),t},this.destroy=function(){clearInterval(this.$pollSizeChangesTimer),this.el&&this.el.parentNode&&this.el.parentNode.removeChild(this.el)}}).call(f.prototype)}),ace.define("ace/virtual_renderer",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/config","ace/lib/useragent","ace/layer/gutter","ace/layer/marker","ace/layer/text","ace/layer/cursor","ace/scrollbar","ace/scrollbar","ace/renderloop","ace/layer/font_metrics","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/dom"),s=e("./config"),o=e("./lib/useragent"),u=e("./layer/gutter").Gutter,a=e("./layer/marker").Marker,f=e("./layer/text").Text,l=e("./layer/cursor").Cursor,c=e("./scrollbar").HScrollBar,h=e("./scrollbar").VScrollBar,p=e("./renderloop").RenderLoop,d=e("./layer/font_metrics").FontMetrics,v=e("./lib/event_emitter").EventEmitter,m='.ace_editor {position: relative;overflow: hidden;font-family: \'Monaco\', \'Menlo\', \'Ubuntu Mono\', \'Consolas\', \'source-code-pro\', monospace;font-size: 12px;line-height: normal;direction: ltr;}.ace_scroller {position: absolute;overflow: hidden;top: 0;bottom: 0;background-color: inherit;-ms-user-select: none;-moz-user-select: none;-webkit-user-select: none;user-select: none;}.ace_content {position: absolute;-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;cursor: text;min-width: 100%;}.ace_dragging, .ace_dragging * {cursor: move !important;}.ace_dragging .ace_scroller:before{position: absolute;top: 0;left: 0;right: 0;bottom: 0;content: \'\';background: rgba(250, 250, 250, 0.01);z-index: 1000;}.ace_dragging.ace_dark .ace_scroller:before{background: rgba(0, 0, 0, 0.01);}.ace_selecting, .ace_selecting * {cursor: text !important;}.ace_gutter {position: absolute;overflow : hidden;width: auto;top: 0;bottom: 0;left: 0;cursor: default;z-index: 4;-ms-user-select: none;-moz-user-select: none;-webkit-user-select: none;user-select: none;}.ace_gutter-active-line {position: absolute;left: 0;right: 0;}.ace_scroller.ace_scroll-left {box-shadow: 17px 0 16px -16px rgba(0, 0, 0, 0.4) inset;}.ace_gutter-cell {padding-left: 19px;padding-right: 6px;background-repeat: no-repeat;}.ace_gutter-cell.ace_error {background-image: url("data:image/png;base64,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");background-repeat: no-repeat;background-position: 2px center;}.ace_gutter-cell.ace_warning {background-image: url("data:image/png;base64,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");background-position: 2px center;}.ace_gutter-cell.ace_info {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAAAAAA6mKC9AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAAJ0Uk5TAAB2k804AAAAPklEQVQY02NgIB68QuO3tiLznjAwpKTgNyDbMegwisCHZUETUZV0ZqOquBpXj2rtnpSJT1AEnnRmL2OgGgAAIKkRQap2htgAAAAASUVORK5CYII=");background-position: 2px center;}.ace_dark .ace_gutter-cell.ace_info {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQBAMAAADt3eJSAAAAJFBMVEUAAAChoaGAgIAqKiq+vr6tra1ZWVmUlJSbm5s8PDxubm56enrdgzg3AAAAAXRSTlMAQObYZgAAAClJREFUeNpjYMAPdsMYHegyJZFQBlsUlMFVCWUYKkAZMxZAGdxlDMQBAG+TBP4B6RyJAAAAAElFTkSuQmCC");}.ace_scrollbar {position: absolute;right: 0;bottom: 0;z-index: 6;}.ace_scrollbar-inner {position: absolute;cursor: text;left: 0;top: 0;}.ace_scrollbar-v{overflow-x: hidden;overflow-y: scroll;top: 0;}.ace_scrollbar-h {overflow-x: scroll;overflow-y: hidden;left: 0;}.ace_print-margin {position: absolute;height: 100%;}.ace_text-input {position: absolute;z-index: 0;width: 0.5em;height: 1em;opacity: 0;background: transparent;-moz-appearance: none;appearance: none;border: none;resize: none;outline: none;overflow: hidden;font: inherit;padding: 0 1px;margin: 0 -1px;text-indent: -1em;-ms-user-select: text;-moz-user-select: text;-webkit-user-select: text;user-select: text;}.ace_text-input.ace_composition {background: #f8f8f8;color: #111;z-index: 1000;opacity: 1;text-indent: 0;}.ace_layer {z-index: 1;position: absolute;overflow: hidden;white-space: pre;height: 100%;width: 100%;-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;pointer-events: none;}.ace_gutter-layer {position: relative;width: auto;text-align: right;pointer-events: auto;}.ace_text-layer {font: inherit !important;}.ace_cjk {display: inline-block;text-align: center;}.ace_cursor-layer {z-index: 4;}.ace_cursor {z-index: 4;position: absolute;-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;border-left: 2px solid}.ace_slim-cursors .ace_cursor {border-left-width: 1px;}.ace_overwrite-cursors .ace_cursor {border-left-width: 0px;border-bottom: 1px solid;}.ace_hidden-cursors .ace_cursor {opacity: 0.2;}.ace_smooth-blinking .ace_cursor {-moz-transition: opacity 0.18s;-webkit-transition: opacity 0.18s;-o-transition: opacity 0.18s;-ms-transition: opacity 0.18s;transition: opacity 0.18s;}.ace_editor.ace_multiselect .ace_cursor {border-left-width: 1px;}.ace_marker-layer .ace_step, .ace_marker-layer .ace_stack {position: absolute;z-index: 3;}.ace_marker-layer .ace_selection {position: absolute;z-index: 5;}.ace_marker-layer .ace_bracket {position: absolute;z-index: 6;}.ace_marker-layer .ace_active-line {position: absolute;z-index: 2;}.ace_marker-layer .ace_selected-word {position: absolute;z-index: 4;-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;}.ace_line .ace_fold {-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;display: inline-block;height: 11px;margin-top: -2px;vertical-align: middle;background-image:url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAJpJREFUeNpi/P//PwOlgAXGYGRklAVSokD8GmjwY1wasKljQpYACtpCFeADcHVQfQyMQAwzwAZI3wJKvCLkfKBaMSClBlR7BOQikCFGQEErIH0VqkabiGCAqwUadAzZJRxQr/0gwiXIal8zQQPnNVTgJ1TdawL0T5gBIP1MUJNhBv2HKoQHHjqNrA4WO4zY0glyNKLT2KIfIMAAQsdgGiXvgnYAAAAASUVORK5CYII="),url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAA3CAYAAADNNiA5AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACJJREFUeNpi+P//fxgTAwPDBxDxD078RSX+YeEyDFMCIMAAI3INmXiwf2YAAAAASUVORK5CYII=");background-repeat: no-repeat, repeat-x;background-position: center center, top left;color: transparent;border: 1px solid black;-moz-border-radius: 2px;-webkit-border-radius: 2px;border-radius: 2px;cursor: pointer;pointer-events: auto;}.ace_dark .ace_fold {}.ace_fold:hover{background-image:url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABEAAAAJCAYAAADU6McMAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAAJpJREFUeNpi/P//PwOlgAXGYGRklAVSokD8GmjwY1wasKljQpYACtpCFeADcHVQfQyMQAwzwAZI3wJKvCLkfKBaMSClBlR7BOQikCFGQEErIH0VqkabiGCAqwUadAzZJRxQr/0gwiXIal8zQQPnNVTgJ1TdawL0T5gBIP1MUJNhBv2HKoQHHjqNrA4WO4zY0glyNKLT2KIfIMAAQsdgGiXvgnYAAAAASUVORK5CYII="),url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAA3CAYAAADNNiA5AAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACBJREFUeNpi+P//fz4TAwPDZxDxD5X4i5fLMEwJgAADAEPVDbjNw87ZAAAAAElFTkSuQmCC");}.ace_tooltip {background-color: #FFF;background-image: -webkit-linear-gradient(top, transparent, rgba(0, 0, 0, 0.1));background-image: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.1));border: 1px solid gray;border-radius: 1px;box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);color: black;display: block;max-width: 100%;padding: 3px 4px;position: fixed;z-index: 999999;-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;cursor: default;white-space: pre;word-wrap: break-word;line-height: normal;font-style: normal;font-weight: normal;letter-spacing: normal;pointer-events: none;}.ace_folding-enabled > .ace_gutter-cell {padding-right: 13px;}.ace_fold-widget {-moz-box-sizing: border-box;-webkit-box-sizing: border-box;box-sizing: border-box;margin: 0 -12px 0 1px;display: none;width: 11px;vertical-align: top;background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAANElEQVR42mWKsQ0AMAzC8ixLlrzQjzmBiEjp0A6WwBCSPgKAXoLkqSot7nN3yMwR7pZ32NzpKkVoDBUxKAAAAABJRU5ErkJggg==");background-repeat: no-repeat;background-position: center;border-radius: 3px;border: 1px solid transparent;cursor: pointer;}.ace_folding-enabled .ace_fold-widget {display: inline-block;   }.ace_fold-widget.ace_end {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAANElEQVR42m3HwQkAMAhD0YzsRchFKI7sAikeWkrxwScEB0nh5e7KTPWimZki4tYfVbX+MNl4pyZXejUO1QAAAABJRU5ErkJggg==");}.ace_fold-widget.ace_closed {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAAGCAYAAAAG5SQMAAAAOUlEQVR42jXKwQkAMAgDwKwqKD4EwQ26sSOkVWjgIIHAzPiCgaqiqnJHZnKICBERHN194O5b9vbLuAVRL+l0YWnZAAAAAElFTkSuQmCCXA==");}.ace_fold-widget:hover {border: 1px solid rgba(0, 0, 0, 0.3);background-color: rgba(255, 255, 255, 0.2);-moz-box-shadow: 0 1px 1px rgba(255, 255, 255, 0.7);-webkit-box-shadow: 0 1px 1px rgba(255, 255, 255, 0.7);box-shadow: 0 1px 1px rgba(255, 255, 255, 0.7);}.ace_fold-widget:active {border: 1px solid rgba(0, 0, 0, 0.4);background-color: rgba(0, 0, 0, 0.05);-moz-box-shadow: 0 1px 1px rgba(255, 255, 255, 0.8);-webkit-box-shadow: 0 1px 1px rgba(255, 255, 255, 0.8);box-shadow: 0 1px 1px rgba(255, 255, 255, 0.8);}.ace_dark .ace_fold-widget {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHklEQVQIW2P4//8/AzoGEQ7oGCaLLAhWiSwB146BAQCSTPYocqT0AAAAAElFTkSuQmCC");}.ace_dark .ace_fold-widget.ace_end {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAH0lEQVQIW2P4//8/AxQ7wNjIAjDMgC4AxjCVKBirIAAF0kz2rlhxpAAAAABJRU5ErkJggg==");}.ace_dark .ace_fold-widget.ace_closed {background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAMAAAAFCAYAAACAcVaiAAAAHElEQVQIW2P4//+/AxAzgDADlOOAznHAKgPWAwARji8UIDTfQQAAAABJRU5ErkJggg==");}.ace_dark .ace_fold-widget:hover {box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);background-color: rgba(255, 255, 255, 0.1);}.ace_dark .ace_fold-widget:active {-moz-box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);-webkit-box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);box-shadow: 0 1px 1px rgba(255, 255, 255, 0.2);}.ace_fold-widget.ace_invalid {background-color: #FFB4B4;border-color: #DE5555;}.ace_fade-fold-widgets .ace_fold-widget {-moz-transition: opacity 0.4s ease 0.05s;-webkit-transition: opacity 0.4s ease 0.05s;-o-transition: opacity 0.4s ease 0.05s;-ms-transition: opacity 0.4s ease 0.05s;transition: opacity 0.4s ease 0.05s;opacity: 0;}.ace_fade-fold-widgets:hover .ace_fold-widget {-moz-transition: opacity 0.05s ease 0.05s;-webkit-transition: opacity 0.05s ease 0.05s;-o-transition: opacity 0.05s ease 0.05s;-ms-transition: opacity 0.05s ease 0.05s;transition: opacity 0.05s ease 0.05s;opacity:1;}.ace_underline {text-decoration: underline;}.ace_bold {font-weight: bold;}.ace_nobold .ace_bold {font-weight: normal;}.ace_italic {font-style: italic;}.ace_error-marker {background-color: rgba(255, 0, 0,0.2);position: absolute;z-index: 9;}.ace_highlight-marker {background-color: rgba(255, 255, 0,0.2);position: absolute;z-index: 8;}';i.importCssString(m,"ace_editor");var g=function(e,t){var n=this;this.container=e||i.createElement("div"),this.$keepTextAreaAtCursor=!o.isOldIE,i.addCssClass(this.container,"ace_editor"),this.setTheme(t),this.$gutter=i.createElement("div"),this.$gutter.className="ace_gutter",this.container.appendChild(this.$gutter),this.scroller=i.createElement("div"),this.scroller.className="ace_scroller",this.container.appendChild(this.scroller),this.content=i.createElement("div"),this.content.className="ace_content",this.scroller.appendChild(this.content),this.$gutterLayer=new u(this.$gutter),this.$gutterLayer.on("changeGutterWidth",this.onGutterResize.bind(this)),this.$markerBack=new a(this.content);var r=this.$textLayer=new f(this.content);this.canvas=r.element,this.$markerFront=new a(this.content),this.$cursorLayer=new l(this.content),this.$horizScroll=!1,this.$vScroll=!1,this.scrollBar=this.scrollBarV=new h(this.container,this),this.scrollBarH=new c(this.container,this),this.scrollBarV.addEventListener("scroll",function(e){n.$scrollAnimation||n.session.setScrollTop(e.data-n.scrollMargin.top)}),this.scrollBarH.addEventListener("scroll",function(e){n.$scrollAnimation||n.session.setScrollLeft(e.data-n.scrollMargin.left)}),this.scrollTop=0,this.scrollLeft=0,this.cursorPos={row:0,column:0},this.$fontMetrics=new d(this.container,500),this.$textLayer.$setFontMetrics(this.$fontMetrics),this.$textLayer.addEventListener("changeCharacterSize",function(e){n.updateCharacterSize(),n.onResize(!0,n.gutterWidth,n.$size.width,n.$size.height),n._signal("changeCharacterSize",e)}),this.$size={width:0,height:0,scrollerHeight:0,scrollerWidth:0,$dirty:!0},this.layerConfig={width:1,padding:0,firstRow:0,firstRowScreen:0,lastRow:0,lineHeight:0,characterWidth:0,minHeight:1,maxHeight:1,offset:0,height:1,gutterOffset:1},this.scrollMargin={left:0,right:0,top:0,bottom:0,v:0,h:0},this.$loop=new p(this.$renderChanges.bind(this),this.container.ownerDocument.defaultView),this.$loop.schedule(this.CHANGE_FULL),this.updateCharacterSize(),this.setPadding(4),s.resetOptions(this),s._emit("renderer",this)};(function(){this.CHANGE_CURSOR=1,this.CHANGE_MARKER=2,this.CHANGE_GUTTER=4,this.CHANGE_SCROLL=8,this.CHANGE_LINES=16,this.CHANGE_TEXT=32,this.CHANGE_SIZE=64,this.CHANGE_MARKER_BACK=128,this.CHANGE_MARKER_FRONT=256,this.CHANGE_FULL=512,this.CHANGE_H_SCROLL=1024,r.implement(this,v),this.updateCharacterSize=function(){this.$textLayer.allowBoldFonts!=this.$allowBoldFonts&&(this.$allowBoldFonts=this.$textLayer.allowBoldFonts,this.setStyle("ace_nobold",!this.$allowBoldFonts)),this.layerConfig.characterWidth=this.characterWidth=this.$textLayer.getCharacterWidth(),this.layerConfig.lineHeight=this.lineHeight=this.$textLayer.getLineHeight(),this.$updatePrintMargin()},this.setSession=function(e){this.session&&this.session.doc.off("changeNewLineMode",this.onChangeNewLineMode),this.session=e;if(!e)return;this.scrollMargin.top&&e.getScrollTop()<=0&&e.setScrollTop(-this.scrollMargin.top),this.$cursorLayer.setSession(e),this.$markerBack.setSession(e),this.$markerFront.setSession(e),this.$gutterLayer.setSession(e),this.$textLayer.setSession(e),this.$loop.schedule(this.CHANGE_FULL),this.session.$setFontMetrics(this.$fontMetrics),this.onChangeNewLineMode=this.onChangeNewLineMode.bind(this),this.onChangeNewLineMode(),this.session.doc.on("changeNewLineMode",this.onChangeNewLineMode)},this.updateLines=function(e,t){t===undefined&&(t=Infinity),this.$changedLines?(this.$changedLines.firstRow>e&&(this.$changedLines.firstRow=e),this.$changedLines.lastRow<t&&(this.$changedLines.lastRow=t)):this.$changedLines={firstRow:e,lastRow:t};if(this.$changedLines.firstRow>this.layerConfig.lastRow||this.$changedLines.lastRow<this.layerConfig.firstRow)return;this.$loop.schedule(this.CHANGE_LINES)},this.onChangeNewLineMode=function(){this.$loop.schedule(this.CHANGE_TEXT),this.$textLayer.$updateEolChar()},this.onChangeTabSize=function(){this.$loop.schedule(this.CHANGE_TEXT|this.CHANGE_MARKER),this.$textLayer.onChangeTabSize()},this.updateText=function(){this.$loop.schedule(this.CHANGE_TEXT)},this.updateFull=function(e){e?this.$renderChanges(this.CHANGE_FULL,!0):this.$loop.schedule(this.CHANGE_FULL)},this.updateFontSize=function(){this.$textLayer.checkForSizeChanges()},this.$changes=0,this.$updateSizeAsync=function(){this.$loop.pending?this.$size.$dirty=!0:this.onResize()},this.onResize=function(e,t,n,r){if(this.resizing>2)return;this.resizing>0?this.resizing++:this.resizing=e?1:0;var i=this.container;r||(r=i.clientHeight||i.scrollHeight),n||(n=i.clientWidth||i.scrollWidth);var s=this.$updateCachedSize(e,t,n,r);if(!this.$size.scrollerHeight||!n&&!r)return this.resizing=0;e&&(this.$gutterLayer.$padding=null),e?this.$renderChanges(s|this.$changes,!0):this.$loop.schedule(s|this.$changes),this.resizing&&(this.resizing=0)},this.$updateCachedSize=function(e,t,n,r){r-=this.$extraHeight||0;var i=0,s=this.$size,o={width:s.width,height:s.height,scrollerHeight:s.scrollerHeight,scrollerWidth:s.scrollerWidth};r&&(e||s.height!=r)&&(s.height=r,i|=this.CHANGE_SIZE,s.scrollerHeight=s.height,this.$horizScroll&&(s.scrollerHeight-=this.scrollBarH.getHeight()),this.scrollBarV.element.style.bottom=this.scrollBarH.getHeight()+"px",i|=this.CHANGE_SCROLL);if(n&&(e||s.width!=n)){i|=this.CHANGE_SIZE,s.width=n,t==null&&(t=this.$showGutter?this.$gutter.offsetWidth:0),this.gutterWidth=t,this.scrollBarH.element.style.left=this.scroller.style.left=t+"px",s.scrollerWidth=Math.max(0,n-t-this.scrollBarV.getWidth()),this.scrollBarH.element.style.right=this.scroller.style.right=this.scrollBarV.getWidth()+"px",this.scroller.style.bottom=this.scrollBarH.getHeight()+"px";if(this.session&&this.session.getUseWrapMode()&&this.adjustWrapLimit()||e)i|=this.CHANGE_FULL}return s.$dirty=!n||!r,i&&this._signal("resize",o),i},this.onGutterResize=function(){var e=this.$showGutter?this.$gutter.offsetWidth:0;e!=this.gutterWidth&&(this.$changes|=this.$updateCachedSize(!0,e,this.$size.width,this.$size.height)),this.session.getUseWrapMode()&&this.adjustWrapLimit()?this.$loop.schedule(this.CHANGE_FULL):this.$size.$dirty?this.$loop.schedule(this.CHANGE_FULL):(this.$computeLayerConfig(),this.$loop.schedule(this.CHANGE_MARKER))},this.adjustWrapLimit=function(){var e=this.$size.scrollerWidth-this.$padding*2,t=Math.floor(e/this.characterWidth);return this.session.adjustWrapLimit(t,this.$showPrintMargin&&this.$printMarginColumn)},this.setAnimatedScroll=function(e){this.setOption("animatedScroll",e)},this.getAnimatedScroll=function(){return this.$animatedScroll},this.setShowInvisibles=function(e){this.setOption("showInvisibles",e)},this.getShowInvisibles=function(){return this.getOption("showInvisibles")},this.getDisplayIndentGuides=function(){return this.getOption("displayIndentGuides")},this.setDisplayIndentGuides=function(e){this.setOption("displayIndentGuides",e)},this.setShowPrintMargin=function(e){this.setOption("showPrintMargin",e)},this.getShowPrintMargin=function(){return this.getOption("showPrintMargin")},this.setPrintMarginColumn=function(e){this.setOption("printMarginColumn",e)},this.getPrintMarginColumn=function(){return this.getOption("printMarginColumn")},this.getShowGutter=function(){return this.getOption("showGutter")},this.setShowGutter=function(e){return this.setOption("showGutter",e)},this.getFadeFoldWidgets=function(){return this.getOption("fadeFoldWidgets")},this.setFadeFoldWidgets=function(e){this.setOption("fadeFoldWidgets",e)},this.setHighlightGutterLine=function(e){this.setOption("highlightGutterLine",e)},this.getHighlightGutterLine=function(){return this.getOption("highlightGutterLine")},this.$updateGutterLineHighlight=function(){var e=this.$cursorLayer.$pixelPos,t=this.layerConfig.lineHeight;if(this.session.getUseWrapMode()){var n=this.session.selection.getCursor();n.column=0,e=this.$cursorLayer.getPixelPosition(n,!0),t*=this.session.getRowLength(n.row)}this.$gutterLineHighlight.style.top=e.top-this.layerConfig.offset+"px",this.$gutterLineHighlight.style.height=t+"px"},this.$updatePrintMargin=function(){if(!this.$showPrintMargin&&!this.$printMarginEl)return;if(!this.$printMarginEl){var e=i.createElement("div");e.className="ace_layer ace_print-margin-layer",this.$printMarginEl=i.createElement("div"),this.$printMarginEl.className="ace_print-margin",e.appendChild(this.$printMarginEl),this.content.insertBefore(e,this.content.firstChild)}var t=this.$printMarginEl.style;t.left=this.characterWidth*this.$printMarginColumn+this.$padding+"px",t.visibility=this.$showPrintMargin?"visible":"hidden",this.session&&this.session.$wrap==-1&&this.adjustWrapLimit()},this.getContainerElement=function(){return this.container},this.getMouseEventTarget=function(){return this.content},this.getTextAreaContainer=function(){return this.container},this.$moveTextAreaToCursor=function(){if(!this.$keepTextAreaAtCursor)return;var e=this.layerConfig,t=this.$cursorLayer.$pixelPos.top,n=this.$cursorLayer.$pixelPos.left;t-=e.offset;var r=this.lineHeight;if(t<0||t>e.height-r)return;var i=this.characterWidth;if(this.$composition){var s=this.textarea.value.replace(/^\x01+/,"");i*=this.session.$getStringScreenWidth(s)[0]+2,r+=2,t-=1}n-=this.scrollLeft,n>this.$size.scrollerWidth-i&&(n=this.$size.scrollerWidth-i),n-=this.scrollBar.width,this.textarea.style.height=r+"px",this.textarea.style.width=i+"px",this.textarea.style.right=Math.max(0,this.$size.scrollerWidth-n-i)+"px",this.textarea.style.bottom=Math.max(0,this.$size.height-t-r)+"px"},this.getFirstVisibleRow=function(){return this.layerConfig.firstRow},this.getFirstFullyVisibleRow=function(){return this.layerConfig.firstRow+(this.layerConfig.offset===0?0:1)},this.getLastFullyVisibleRow=function(){var e=Math.floor((this.layerConfig.height+this.layerConfig.offset)/this.layerConfig.lineHeight);return this.layerConfig.firstRow-1+e},this.getLastVisibleRow=function(){return this.layerConfig.lastRow},this.$padding=null,this.setPadding=function(e){this.$padding=e,this.$textLayer.setPadding(e),this.$cursorLayer.setPadding(e),this.$markerFront.setPadding(e),this.$markerBack.setPadding(e),this.$loop.schedule(this.CHANGE_FULL),this.$updatePrintMargin()},this.setScrollMargin=function(e,t,n,r){var i=this.scrollMargin;i.top=e|0,i.bottom=t|0,i.right=r|0,i.left=n|0,i.v=i.top+i.bottom,i.h=i.left+i.right,i.top&&this.scrollTop<=0&&this.session&&this.session.setScrollTop(-i.top),this.updateFull()},this.getHScrollBarAlwaysVisible=function(){return this.$hScrollBarAlwaysVisible},this.setHScrollBarAlwaysVisible=function(e){this.setOption("hScrollBarAlwaysVisible",e)},this.getVScrollBarAlwaysVisible=function(){return this.$hScrollBarAlwaysVisible},this.setVScrollBarAlwaysVisible=function(e){this.setOption("vScrollBarAlwaysVisible",e)},this.$updateScrollBarV=function(){var e=this.layerConfig.maxHeight,t=this.$size.scrollerHeight;!this.$maxLines&&this.$scrollPastEnd&&(e-=(t-this.lineHeight)*this.$scrollPastEnd,this.scrollTop>e-t&&(e=this.scrollTop+t,this.scrollBarV.scrollTop=null)),this.scrollBarV.setScrollHeight(e+this.scrollMargin.v),this.scrollBarV.setScrollTop(this.scrollTop+this.scrollMargin.top)},this.$updateScrollBarH=function(){this.scrollBarH.setScrollWidth(this.layerConfig.width+2*this.$padding+this.scrollMargin.h),this.scrollBarH.setScrollLeft(this.scrollLeft+this.scrollMargin.left)},this.$frozen=!1,this.freeze=function(){this.$frozen=!0},this.unfreeze=function(){this.$frozen=!1},this.$renderChanges=function(e,t){this.$changes&&(e|=this.$changes,this.$changes=0);if(!this.session||!this.container.offsetWidth||this.$frozen||!e&&!t){this.$changes|=e;return}if(this.$size.$dirty)return this.$changes|=e,this.onResize(!0);this.lineHeight||this.$textLayer.checkForSizeChanges(),this._signal("beforeRender");var n=this.layerConfig;if(e&this.CHANGE_FULL||e&this.CHANGE_SIZE||e&this.CHANGE_TEXT||e&this.CHANGE_LINES||e&this.CHANGE_SCROLL||e&this.CHANGE_H_SCROLL)e|=this.$computeLayerConfig(),n=this.layerConfig,this.$updateScrollBarV(),e&this.CHANGE_H_SCROLL&&this.$updateScrollBarH(),this.$gutterLayer.element.style.marginTop=-n.offset+"px",this.content.style.marginTop=-n.offset+"px",this.content.style.width=n.width+2*this.$padding+"px",this.content.style.height=n.minHeight+"px";e&this.CHANGE_H_SCROLL&&(this.content.style.marginLeft=-this.scrollLeft+"px",this.scroller.className=this.scrollLeft<=0?"ace_scroller":"ace_scroller ace_scroll-left");if(e&this.CHANGE_FULL){this.$textLayer.update(n),this.$showGutter&&this.$gutterLayer.update(n),this.$markerBack.update(n),this.$markerFront.update(n),this.$cursorLayer.update(n),this.$moveTextAreaToCursor(),this.$highlightGutterLine&&this.$updateGutterLineHighlight(),this._signal("afterRender");return}if(e&this.CHANGE_SCROLL){e&this.CHANGE_TEXT||e&this.CHANGE_LINES?this.$textLayer.update(n):this.$textLayer.scrollLines(n),this.$showGutter&&this.$gutterLayer.update(n),this.$markerBack.update(n),this.$markerFront.update(n),this.$cursorLayer.update(n),this.$highlightGutterLine&&this.$updateGutterLineHighlight(),this.$moveTextAreaToCursor(),this._signal("afterRender");return}e&this.CHANGE_TEXT?(this.$textLayer.update(n),this.$showGutter&&this.$gutterLayer.update(n)):e&this.CHANGE_LINES?(this.$updateLines()||e&this.CHANGE_GUTTER&&this.$showGutter)&&this.$gutterLayer.update(n):(e&this.CHANGE_TEXT||e&this.CHANGE_GUTTER)&&this.$showGutter&&this.$gutterLayer.update(n),e&this.CHANGE_CURSOR&&(this.$cursorLayer.update(n),this.$moveTextAreaToCursor(),this.$highlightGutterLine&&this.$updateGutterLineHighlight()),e&(this.CHANGE_MARKER|this.CHANGE_MARKER_FRONT)&&this.$markerFront.update(n),e&(this.CHANGE_MARKER|this.CHANGE_MARKER_BACK)&&this.$markerBack.update(n),this._signal("afterRender")},this.$autosize=function(){var e=this.session.getScreenLength()*this.lineHeight,t=this.$maxLines*this.lineHeight,n=Math.max((this.$minLines||1)*this.lineHeight,Math.min(t,e))+this.scrollMargin.v+(this.$extraHeight||0),r=e>t;if(n!=this.desiredHeight||this.$size.height!=this.desiredHeight||r!=this.$vScroll){r!=this.$vScroll&&(this.$vScroll=r,this.scrollBarV.setVisible(r));var i=this.container.clientWidth;this.container.style.height=n+"px",this.$updateCachedSize(!0,this.$gutterWidth,i,n),this.desiredHeight=n}},this.$computeLayerConfig=function(){this.$maxLines&&this.lineHeight>1&&this.$autosize();var e=this.session,t=this.$size,n=t.height<=2*this.lineHeight,r=this.session.getScreenLength(),i=r*this.lineHeight,s=this.scrollTop%this.lineHeight,o=t.scrollerHeight+this.lineHeight,u=this.$getLongestLine(),a=!n&&(this.$hScrollBarAlwaysVisible||t.scrollerWidth-u-2*this.$padding<0),f=this.$horizScroll!==a;f&&(this.$horizScroll=a,this.scrollBarH.setVisible(a)),!this.$maxLines&&this.$scrollPastEnd&&(i+=(t.scrollerHeight-this.lineHeight)*this.$scrollPastEnd);var l=!n&&(this.$vScrollBarAlwaysVisible||t.scrollerHeight-i<0),c=this.$vScroll!==l;c&&(this.$vScroll=l,this.scrollBarV.setVisible(l)),this.session.setScrollTop(Math.max(-this.scrollMargin.top,Math.min(this.scrollTop,i-t.scrollerHeight+this.scrollMargin.bottom))),this.session.setScrollLeft(Math.max(-this.scrollMargin.left,Math.min(this.scrollLeft,u+2*this.$padding-t.scrollerWidth+this.scrollMargin.right)));var h=Math.ceil(o/this.lineHeight)-1,p=Math.max(0,Math.round((this.scrollTop-s)/this.lineHeight)),d=p+h,v,m,g=this.lineHeight;p=e.screenToDocumentRow(p,0);var y=e.getFoldLine(p);y&&(p=y.start.row),v=e.documentToScreenRow(p,0),m=e.getRowLength(p)*g,d=Math.min(e.screenToDocumentRow(d,0),e.getLength()-1),o=t.scrollerHeight+e.getRowLength(d)*g+m,s=this.scrollTop-v*g;var b=0;this.layerConfig.width!=u&&(b=this.CHANGE_H_SCROLL);if(f||c)b=this.$updateCachedSize(!0,this.gutterWidth,t.width,t.height),this._signal("scrollbarVisibilityChanged"),c&&(u=this.$getLongestLine());return this.layerConfig={width:u,padding:this.$padding,firstRow:p,firstRowScreen:v,lastRow:d,lineHeight:g,characterWidth:this.characterWidth,minHeight:o,maxHeight:i,offset:s,gutterOffset:Math.max(0,Math.ceil((s+t.height-t.scrollerHeight)/g)),height:this.$size.scrollerHeight},b},this.$updateLines=function(){var e=this.$changedLines.firstRow,t=this.$changedLines.lastRow;this.$changedLines=null;var n=this.layerConfig;if(e>n.lastRow+1)return;if(t<n.firstRow)return;if(t===Infinity){this.$showGutter&&this.$gutterLayer.update(n),this.$textLayer.update(n);return}return this.$textLayer.updateLines(n,e,t),!0},this.$getLongestLine=function(){var e=this.session.getScreenWidth();return this.showInvisibles&&!this.session.$useWrapMode&&(e+=1),Math.max(this.$size.scrollerWidth-2*this.$padding,Math.round(e*this.characterWidth))},this.updateFrontMarkers=function(){this.$markerFront.setMarkers(this.session.getMarkers(!0)),this.$loop.schedule(this.CHANGE_MARKER_FRONT)},this.updateBackMarkers=function(){this.$markerBack.setMarkers(this.session.getMarkers()),this.$loop.schedule(this.CHANGE_MARKER_BACK)},this.addGutterDecoration=function(e,t){this.$gutterLayer.addGutterDecoration(e,t)},this.removeGutterDecoration=function(e,t){this.$gutterLayer.removeGutterDecoration(e,t)},this.updateBreakpoints=function(e){this.$loop.schedule(this.CHANGE_GUTTER)},this.setAnnotations=function(e){this.$gutterLayer.setAnnotations(e),this.$loop.schedule(this.CHANGE_GUTTER)},this.updateCursor=function(){this.$loop.schedule(this.CHANGE_CURSOR)},this.hideCursor=function(){this.$cursorLayer.hideCursor()},this.showCursor=function(){this.$cursorLayer.showCursor()},this.scrollSelectionIntoView=function(e,t,n){this.scrollCursorIntoView(e,n),this.scrollCursorIntoView(t,n)},this.scrollCursorIntoView=function(e,t,n){if(this.$size.scrollerHeight===0)return;var r=this.$cursorLayer.getPixelPosition(e),i=r.left,s=r.top,o=n&&n.top||0,u=n&&n.bottom||0,a=this.$scrollAnimation?this.session.getScrollTop():this.scrollTop;a+o>s?(t&&(s-=t*this.$size.scrollerHeight),s===0&&(s=-this.scrollMargin.top),this.session.setScrollTop(s)):a+this.$size.scrollerHeight-u<s+this.lineHeight&&(t&&(s+=t*this.$size.scrollerHeight),this.session.setScrollTop(s+this.lineHeight-this.$size.scrollerHeight));var f=this.scrollLeft;f>i?(i<this.$padding+2*this.layerConfig.characterWidth&&(i=-this.scrollMargin.left),this.session.setScrollLeft(i)):f+this.$size.scrollerWidth<i+this.characterWidth?this.session.setScrollLeft(Math.round(i+this.characterWidth-this.$size.scrollerWidth)):f<=this.$padding&&i-f<this.characterWidth&&this.session.setScrollLeft(0)},this.getScrollTop=function(){return this.session.getScrollTop()},this.getScrollLeft=function(){return this.session.getScrollLeft()},this.getScrollTopRow=function(){return this.scrollTop/this.lineHeight},this.getScrollBottomRow=function(){return Math.max(0,Math.floor((this.scrollTop+this.$size.scrollerHeight)/this.lineHeight)-1)},this.scrollToRow=function(e){this.session.setScrollTop(e*this.lineHeight)},this.alignCursor=function(e,t){typeof e=="number"&&(e={row:e,column:0});var n=this.$cursorLayer.getPixelPosition(e),r=this.$size.scrollerHeight-this.lineHeight,i=n.top-r*(t||0);return this.session.setScrollTop(i),i},this.STEPS=8,this.$calcSteps=function(e,t){var n=0,r=this.STEPS,i=[],s=function(e,t,n){return n*(Math.pow(e-1,3)+1)+t};for(n=0;n<r;++n)i.push(s(n/this.STEPS,e,t-e));return i},this.scrollToLine=function(e,t,n,r){var i=this.$cursorLayer.getPixelPosition({row:e,column:0}),s=i.top;t&&(s-=this.$size.scrollerHeight/2);var o=this.scrollTop;this.session.setScrollTop(s),n!==!1&&this.animateScrolling(o,r)},this.animateScrolling=function(e,t){var n=this.scrollTop;if(!this.$animatedScroll)return;var r=this;if(e==n)return;if(this.$scrollAnimation){var i=this.$scrollAnimation.steps;if(i.length){e=i[0];if(e==n)return}}var s=r.$calcSteps(e,n);this.$scrollAnimation={from:e,to:n,steps:s},clearInterval(this.$timer),r.session.setScrollTop(s.shift()),r.session.$scrollTop=n,this.$timer=setInterval(function(){s.length?(r.session.setScrollTop(s.shift()),r.session.$scrollTop=n):n!=null?(r.session.$scrollTop=-1,r.session.setScrollTop(n),n=null):(r.$timer=clearInterval(r.$timer),r.$scrollAnimation=null,t&&t())},10)},this.scrollToY=function(e){this.scrollTop!==e&&(this.$loop.schedule(this.CHANGE_SCROLL),this.scrollTop=e)},this.scrollToX=function(e){this.scrollLeft!==e&&(this.scrollLeft=e),this.$loop.schedule(this.CHANGE_H_SCROLL)},this.scrollTo=function(e,t){this.session.setScrollTop(t),this.session.setScrollLeft(t)},this.scrollBy=function(e,t){t&&this.session.setScrollTop(this.session.getScrollTop()+t),e&&this.session.setScrollLeft(this.session.getScrollLeft()+e)},this.isScrollableBy=function(e,t){if(t<0&&this.session.getScrollTop()>=1-this.scrollMargin.top)return!0;if(t>0&&this.session.getScrollTop()+this.$size.scrollerHeight-this.layerConfig.maxHeight<-1+this.scrollMargin.bottom)return!0;if(e<0&&this.session.getScrollLeft()>=1-this.scrollMargin.left)return!0;if(e>0&&this.session.getScrollLeft()+this.$size.scrollerWidth-this.layerConfig.width<-1+this.scrollMargin.right)return!0},this.pixelToScreenCoordinates=function(e,t){var n=this.scroller.getBoundingClientRect(),r=(e+this.scrollLeft-n.left-this.$padding)/this.characterWidth,i=Math.floor((t+this.scrollTop-n.top)/this.lineHeight),s=Math.round(r);return{row:i,column:s,side:r-s>0?1:-1}},this.screenToTextCoordinates=function(e,t){var n=this.scroller.getBoundingClientRect(),r=Math.round((e+this.scrollLeft-n.left-this.$padding)/this.characterWidth),i=(t+this.scrollTop-n.top)/this.lineHeight;return this.session.screenToDocumentPosition(i,Math.max(r,0))},this.textToScreenCoordinates=function(e,t){var n=this.scroller.getBoundingClientRect(),r=this.session.documentToScreenPosition(e,t),i=this.$padding+Math.round(r.column*this.characterWidth),s=r.row*this.lineHeight;return{pageX:n.left+i-this.scrollLeft,pageY:n.top+s-this.scrollTop}},this.visualizeFocus=function(){i.addCssClass(this.container,"ace_focus")},this.visualizeBlur=function(){i.removeCssClass(this.container,"ace_focus")},this.showComposition=function(e){this.$composition||(this.$composition={keepTextAreaAtCursor:this.$keepTextAreaAtCursor,cssText:this.textarea.style.cssText}),this.$keepTextAreaAtCursor=!0,i.addCssClass(this.textarea,"ace_composition"),this.textarea.style.cssText="",this.$moveTextAreaToCursor()},this.setCompositionText=function(e){this.$moveTextAreaToCursor()},this.hideComposition=function(){if(!this.$composition)return;i.removeCssClass(this.textarea,"ace_composition"),this.$keepTextAreaAtCursor=this.$composition.keepTextAreaAtCursor,this.textarea.style.cssText=this.$composition.cssText,this.$composition=null},this.setTheme=function(e,t){function o(r){if(n.$themeId!=e)return t&&t();if(!r.cssClass)return;i.importCssString(r.cssText,r.cssClass,n.container.ownerDocument),n.theme&&i.removeCssClass(n.container,n.theme.cssClass);var s="padding"in r?r.padding:"padding"in(n.theme||{})?4:n.$padding;n.$padding&&s!=n.$padding&&n.setPadding(s),n.$theme=r.cssClass,n.theme=r,i.addCssClass(n.container,r.cssClass),i.setCssClass(n.container,"ace_dark",r.isDark),n.$size&&(n.$size.width=0,n.$updateSizeAsync()),n._dispatchEvent("themeLoaded",{theme:r}),t&&t()}var n=this;this.$themeId=e,n._dispatchEvent("themeChange",{theme:e});if(!e||typeof e=="string"){var r=e||this.$options.theme.initialValue;s.loadModule(["theme",r],o)}else o(e)},this.getTheme=function(){return this.$themeId},this.setStyle=function(e,t){i.setCssClass(this.container,e,t!==!1)},this.unsetStyle=function(e){i.removeCssClass(this.container,e)},this.setCursorStyle=function(e){this.content.style.cursor!=e&&(this.content.style.cursor=e)},this.setMouseCursor=function(e){this.content.style.cursor=e},this.destroy=function(){this.$textLayer.destroy(),this.$cursorLayer.destroy()}}).call(g.prototype),s.defineOptions(g.prototype,"renderer",{animatedScroll:{initialValue:!1},showInvisibles:{set:function(e){this.$textLayer.setShowInvisibles(e)&&this.$loop.schedule(this.CHANGE_TEXT)},initialValue:!1},showPrintMargin:{set:function(){this.$updatePrintMargin()},initialValue:!0},printMarginColumn:{set:function(){this.$updatePrintMargin()},initialValue:80},printMargin:{set:function(e){typeof e=="number"&&(this.$printMarginColumn=e),this.$showPrintMargin=!!e,this.$updatePrintMargin()},get:function(){return this.$showPrintMargin&&this.$printMarginColumn}},showGutter:{set:function(e){this.$gutter.style.display=e?"block":"none",this.$loop.schedule(this.CHANGE_FULL),this.onGutterResize()},initialValue:!0},fadeFoldWidgets:{set:function(e){i.setCssClass(this.$gutter,"ace_fade-fold-widgets",e)},initialValue:!1},showFoldWidgets:{set:function(e){this.$gutterLayer.setShowFoldWidgets(e)},initialValue:!0},showLineNumbers:{set:function(e){this.$gutterLayer.setShowLineNumbers(e),this.$loop.schedule(this.CHANGE_GUTTER)},initialValue:!0},displayIndentGuides:{set:function(e){this.$textLayer.setDisplayIndentGuides(e)&&this.$loop.schedule(this.CHANGE_TEXT)},initialValue:!0},highlightGutterLine:{set:function(e){if(!this.$gutterLineHighlight){this.$gutterLineHighlight=i.createElement("div"),this.$gutterLineHighlight.className="ace_gutter-active-line",this.$gutter.appendChild(this.$gutterLineHighlight);return}this.$gutterLineHighlight.style.display=e?"":"none",this.$cursorLayer.$pixelPos&&this.$updateGutterLineHighlight()},initialValue:!1,value:!0},hScrollBarAlwaysVisible:{set:function(e){(!this.$hScrollBarAlwaysVisible||!this.$horizScroll)&&this.$loop.schedule(this.CHANGE_SCROLL)},initialValue:!1},vScrollBarAlwaysVisible:{set:function(e){(!this.$vScrollBarAlwaysVisible||!this.$vScroll)&&this.$loop.schedule(this.CHANGE_SCROLL)},initialValue:!1},fontSize:{set:function(e){typeof e=="number"&&(e+="px"),this.container.style.fontSize=e,this.updateFontSize()},initialValue:12},fontFamily:{set:function(e){this.container.style.fontFamily=e,this.updateFontSize()}},maxLines:{set:function(e){this.updateFull()}},minLines:{set:function(e){this.updateFull()}},scrollPastEnd:{set:function(e){e=+e||0;if(this.$scrollPastEnd==e)return;this.$scrollPastEnd=e,this.$loop.schedule(this.CHANGE_SCROLL)},initialValue:0,handlesSet:!0},fixedWidthGutter:{set:function(e){this.$gutterLayer.$fixedWidth=!!e,this.$loop.schedule(this.CHANGE_GUTTER)}},theme:{set:function(e){this.setTheme(e)},get:function(){return this.$themeId||this.theme},initialValue:"./theme/textmate",handlesSet:!0}}),t.VirtualRenderer=g}),ace.define("ace/worker/worker_client",["require","exports","module","ace/lib/oop","ace/lib/net","ace/lib/event_emitter","ace/config"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("../lib/net"),s=e("../lib/event_emitter").EventEmitter,o=e("../config"),u=function(t,n,r,i){this.$sendDeltaQueue=this.$sendDeltaQueue.bind(this),this.changeListener=this.changeListener.bind(this),this.onMessage=this.onMessage.bind(this),e.nameToUrl&&!e.toUrl&&(e.toUrl=e.nameToUrl);if(o.get("packaged")||!e.toUrl)i=i||o.moduleUrl(n,"worker");else{var s=this.$normalizePath;i=i||s(e.toUrl("ace/worker/worker.js",null,"_"));var u={};t.forEach(function(t){u[t]=s(e.toUrl(t,null,"_").replace(/(\.js)?(\?.*)?$/,""))})}try{this.$worker=new Worker(i)}catch(a){if(!(a instanceof window.DOMException))throw a;var f=this.$workerBlob(i),l=window.URL||window.webkitURL,c=l.createObjectURL(f);this.$worker=new Worker(c),l.revokeObjectURL(c)}this.$worker.postMessage({init:!0,tlns:u,module:n,classname:r}),this.callbackId=1,this.callbacks={},this.$worker.onmessage=this.onMessage};(function(){r.implement(this,s),this.onMessage=function(e){var t=e.data;switch(t.type){case"log":window.console&&console.log&&console.log.apply(console,t.data);break;case"event":this._signal(t.name,{data:t.data});break;case"call":var n=this.callbacks[t.id];n&&(n(t.data),delete this.callbacks[t.id])}},this.$normalizePath=function(e){return i.qualifyURL(e)},this.terminate=function(){this._signal("terminate",{}),this.deltaQueue=null,this.$worker.terminate(),this.$worker=null,this.$doc.removeEventListener("change",this.changeListener),this.$doc=null},this.send=function(e,t){this.$worker.postMessage({command:e,args:t})},this.call=function(e,t,n){if(n){var r=this.callbackId++;this.callbacks[r]=n,t.push(r)}this.send(e,t)},this.emit=function(e,t){try{this.$worker.postMessage({event:e,data:{data:t.data}})}catch(n){console.error(n.stack)}},this.attachToDocument=function(e){this.$doc&&this.terminate(),this.$doc=e,this.call("setValue",[e.getValue()]),e.on("change",this.changeListener)},this.changeListener=function(e){this.deltaQueue?this.deltaQueue.push(e.data):(this.deltaQueue=[e.data],setTimeout(this.$sendDeltaQueue,0))},this.$sendDeltaQueue=function(){var e=this.deltaQueue;if(!e)return;this.deltaQueue=null,e.length>20&&e.length>this.$doc.getLength()>>1?this.call("setValue",[this.$doc.getValue()]):this.emit("change",{data:e})},this.$workerBlob=function(e){var t="importScripts('"+i.qualifyURL(e)+"');";try{return new Blob([t],{type:"application/javascript"})}catch(n){var r=window.BlobBuilder||window.WebKitBlobBuilder||window.MozBlobBuilder,s=new r;return s.append(t),s.getBlob("application/javascript")}}}).call(u.prototype);var a=function(e,t,n){this.$sendDeltaQueue=this.$sendDeltaQueue.bind(this),this.changeListener=this.changeListener.bind(this),this.callbackId=1,this.callbacks={},this.messageBuffer=[];var r=null,i=!1,u=Object.create(s),a=this;this.$worker={},this.$worker.terminate=function(){},this.$worker.postMessage=function(e){a.messageBuffer.push(e),r&&(i?setTimeout(f):f())},this.setEmitSync=function(e){i=e};var f=function(){var e=a.messageBuffer.shift();e.command?r[e.command].apply(r,e.args):e.event&&u._signal(e.event,e.data)};u.postMessage=function(e){a.onMessage({data:e})},u.callback=function(e,t){this.postMessage({type:"call",id:t,data:e})},u.emit=function(e,t){this.postMessage({type:"event",name:e,data:t})},o.loadModule(["worker",t],function(e){r=new e[n](u);while(a.messageBuffer.length)f()})};a.prototype=u.prototype,t.UIWorkerClient=a,t.WorkerClient=u}),ace.define("ace/placeholder",["require","exports","module","ace/range","ace/lib/event_emitter","ace/lib/oop"],function(e,t,n){"use strict";var r=e("./range").Range,i=e("./lib/event_emitter").EventEmitter,s=e("./lib/oop"),o=function(e,t,n,r,i,s){var o=this;this.length=t,this.session=e,this.doc=e.getDocument(),this.mainClass=i,this.othersClass=s,this.$onUpdate=this.onUpdate.bind(this),this.doc.on("change",this.$onUpdate),this.$others=r,this.$onCursorChange=function(){setTimeout(function(){o.onCursorChange()})},this.$pos=n;var u=e.getUndoManager().$undoStack||e.getUndoManager().$undostack||{length:-1};this.$undoStackDepth=u.length,this.setup(),e.selection.on("changeCursor",this.$onCursorChange)};(function(){s.implement(this,i),this.setup=function(){var e=this,t=this.doc,n=this.session,i=this.$pos;this.pos=t.createAnchor(i.row,i.column),this.markerId=n.addMarker(new r(i.row,i.column,i.row,i.column+this.length),this.mainClass,null,!1),this.pos.on("change",function(t){n.removeMarker(e.markerId),e.markerId=n.addMarker(new r(t.value.row,t.value.column,t.value.row,t.value.column+e.length),e.mainClass,null,!1)}),this.others=[],this.$others.forEach(function(n){var r=t.createAnchor(n.row,n.column);e.others.push(r)}),n.setUndoSelect(!1)},this.showOtherMarkers=function(){if(this.othersActive)return;var e=this.session,t=this;this.othersActive=!0,this.others.forEach(function(n){n.markerId=e.addMarker(new r(n.row,n.column,n.row,n.column+t.length),t.othersClass,null,!1),n.on("change",function(i){e.removeMarker(n.markerId),n.markerId=e.addMarker(new r(i.value.row,i.value.column,i.value.row,i.value.column+t.length),t.othersClass,null,!1)})})},this.hideOtherMarkers=function(){if(!this.othersActive)return;this.othersActive=!1;for(var e=0;e<this.others.length;e++)this.session.removeMarker(this.others[e].markerId)},this.onUpdate=function(e){var t=e.data,n=t.range;if(n.start.row!==n.end.row)return;if(n.start.row!==this.pos.row)return;if(this.$updating)return;this.$updating=!0;var i=t.action==="insertText"?n.end.column-n.start.column:n.start.column-n.end.column;if(n.start.column>=this.pos.column&&n.start.column<=this.pos.column+this.length+1){var s=n.start.column-this.pos.column;this.length+=i;if(!this.session.$fromUndo){if(t.action==="insertText")for(var o=this.others.length-1;o>=0;o--){var u=this.others[o],a={row:u.row,column:u.column+s};u.row===n.start.row&&n.start.column<u.column&&(a.column+=i),this.doc.insert(a,t.text)}else if(t.action==="removeText")for(var o=this.others.length-1;o>=0;o--){var u=this.others[o],a={row:u.row,column:u.column+s};u.row===n.start.row&&n.start.column<u.column&&(a.column+=i),this.doc.remove(new r(a.row,a.column,a.row,a.column-i))}n.start.column===this.pos.column&&t.action==="insertText"?setTimeout(function(){this.pos.setPosition(this.pos.row,this.pos.column-i);for(var e=0;e<this.others.length;e++){var t=this.others[e],r={row:t.row,column:t.column-i};t.row===n.start.row&&n.start.column<t.column&&(r.column+=i),t.setPosition(r.row,r.column)}}.bind(this),0):n.start.column===this.pos.column&&t.action==="removeText"&&setTimeout(function(){for(var e=0;e<this.others.length;e++){var t=this.others[e];t.row===n.start.row&&n.start.column<t.column&&t.setPosition(t.row,t.column-i)}}.bind(this),0)}this.pos._emit("change",{value:this.pos});for(var o=0;o<this.others.length;o++)this.others[o]._emit("change",{value:this.others[o]})}this.$updating=!1},this.onCursorChange=function(e){if(this.$updating)return;var t=this.session.selection.getCursor();t.row===this.pos.row&&t.column>=this.pos.column&&t.column<=this.pos.column+this.length?(this.showOtherMarkers(),this._emit("cursorEnter",e)):(this.hideOtherMarkers(),this._emit("cursorLeave",e))},this.detach=function(){this.session.removeMarker(this.markerId),this.hideOtherMarkers(),this.doc.removeEventListener("change",this.$onUpdate),this.session.selection.removeEventListener("changeCursor",this.$onCursorChange),this.pos.detach();for(var e=0;e<this.others.length;e++)this.others[e].detach();this.session.setUndoSelect(!0)},this.cancel=function(){if(this.$undoStackDepth===-1)throw Error("Canceling placeholders only supported with undo manager attached to session.");var e=this.session.getUndoManager(),t=(e.$undoStack||e.$undostack).length-this.$undoStackDepth;for(var n=0;n<t;n++)e.undo(!0)}}).call(o.prototype),t.PlaceHolder=o}),ace.define("ace/mouse/multi_select_handler",["require","exports","module","ace/lib/event","ace/lib/useragent"],function(e,t,n){function s(e,t){return e.row==t.row&&e.column==t.column}function o(e){var t=e.domEvent,n=t.altKey,o=t.shiftKey,u=t.ctrlKey,a=e.getAccelKey(),f=e.getButton();u&&i.isMac&&(f=t.button);if(e.editor.inMultiSelectMode&&f==2){e.editor.textInput.onContextMenu(e.domEvent);return}if(!u&&!n&&!a){f===0&&e.editor.inMultiSelectMode&&e.editor.exitMultiSelectMode();return}if(f!==0)return;var l=e.editor,c=l.selection,h=l.inMultiSelectMode,p=e.getDocumentPosition(),d=c.getCursor(),v=e.inSelection()||c.isEmpty()&&s(p,d),m=e.x,g=e.y,y=function(e){m=e.clientX,g=e.clientY},b=l.session,w=l.renderer.pixelToScreenCoordinates(m,g),E=w,S;if(l.$mouseHandler.$enableJumpToDef)u&&n||a&&n?S="add":n&&(S="block");else if(a&&!n){S="add";if(!h&&o)return}else n&&(S="block");S&&i.isMac&&t.ctrlKey&&l.$mouseHandler.cancelContextMenu();if(S=="add"){if(!h&&v)return;if(!h){var x=c.toOrientedRange();l.addSelectionMarker(x)}var T=c.rangeList.rangeAtPoint(p);l.$blockScrolling++,l.inVirtualSelectionMode=!0,o&&(T=null,x=c.ranges[0],l.removeSelectionMarker(x)),l.once("mouseup",function(){var e=c.toOrientedRange();T&&e.isEmpty()&&s(T.cursor,e.cursor)?c.substractPoint(e.cursor):(o?c.substractPoint(x.cursor):x&&(l.removeSelectionMarker(x),c.addRange(x)),c.addRange(e)),l.$blockScrolling--,l.inVirtualSelectionMode=!1})}else if(S=="block"){e.stop(),l.inVirtualSelectionMode=!0;var N,C=[],k=function(){var e=l.renderer.pixelToScreenCoordinates(m,g),t=b.screenToDocumentPosition(e.row,e.column);if(s(E,e)&&s(t,c.lead))return;E=e,l.selection.moveToPosition(t),l.renderer.scrollCursorIntoView(),l.removeSelectionMarkers(C),C=c.rectangularRangeBlock(E,w),l.$mouseHandler.$clickSelection&&C.length==1&&C[0].isEmpty()&&(C[0]=l.$mouseHandler.$clickSelection.clone()),C.forEach(l.addSelectionMarker,l),l.updateSelectionMarkers()};h&&!a?c.toSingleRange():!h&&a&&(N=c.toOrientedRange(),l.addSelectionMarker(N)),o?w=b.documentToScreenPosition(c.lead):c.moveToPosition(p),E={row:-1,column:-1};var L=function(e){clearInterval(O),l.removeSelectionMarkers(C),C.length||(C=[c.toOrientedRange()]),l.$blockScrolling++,N&&(l.removeSelectionMarker(N),c.toSingleRange(N));for(var t=0;t<C.length;t++)c.addRange(C[t]);l.inVirtualSelectionMode=!1,l.$mouseHandler.$clickSelection=null,l.$blockScrolling--},A=k;r.capture(l.container,y,L);var O=setInterval(function(){A()},20);return e.preventDefault()}}var r=e("../lib/event"),i=e("../lib/useragent");t.onMouseDown=o}),ace.define("ace/commands/multi_select_commands",["require","exports","module","ace/keyboard/hash_handler"],function(e,t,n){t.defaultCommands=[{name:"addCursorAbove",exec:function(e){e.selectMoreLines(-1)},bindKey:{win:"Ctrl-Alt-Up",mac:"Ctrl-Alt-Up"},readonly:!0},{name:"addCursorBelow",exec:function(e){e.selectMoreLines(1)},bindKey:{win:"Ctrl-Alt-Down",mac:"Ctrl-Alt-Down"},readonly:!0},{name:"addCursorAboveSkipCurrent",exec:function(e){e.selectMoreLines(-1,!0)},bindKey:{win:"Ctrl-Alt-Shift-Up",mac:"Ctrl-Alt-Shift-Up"},readonly:!0},{name:"addCursorBelowSkipCurrent",exec:function(e){e.selectMoreLines(1,!0)},bindKey:{win:"Ctrl-Alt-Shift-Down",mac:"Ctrl-Alt-Shift-Down"},readonly:!0},{name:"selectMoreBefore",exec:function(e){e.selectMore(-1)},bindKey:{win:"Ctrl-Alt-Left",mac:"Ctrl-Alt-Left"},readonly:!0},{name:"selectMoreAfter",exec:function(e){e.selectMore(1)},bindKey:{win:"Ctrl-Alt-Right",mac:"Ctrl-Alt-Right"},readonly:!0},{name:"selectNextBefore",exec:function(e){e.selectMore(-1,!0)},bindKey:{win:"Ctrl-Alt-Shift-Left",mac:"Ctrl-Alt-Shift-Left"},readonly:!0},{name:"selectNextAfter",exec:function(e){e.selectMore(1,!0)},bindKey:{win:"Ctrl-Alt-Shift-Right",mac:"Ctrl-Alt-Shift-Right"},readonly:!0},{name:"splitIntoLines",exec:function(e){e.multiSelect.splitIntoLines()},bindKey:{win:"Ctrl-Alt-L",mac:"Ctrl-Alt-L"},readonly:!0},{name:"alignCursors",exec:function(e){e.alignCursors()},bindKey:{win:"Ctrl-Alt-A",mac:"Ctrl-Alt-A"}},{name:"findAll",exec:function(e){e.findAll()},bindKey:{win:"Ctrl-Alt-K",mac:"Ctrl-Alt-G"},readonly:!0}],t.multiSelectCommands=[{name:"singleSelection",bindKey:"esc",exec:function(e){e.exitMultiSelectMode()},readonly:!0,isAvailable:function(e){return e&&e.inMultiSelectMode}}];var r=e("../keyboard/hash_handler").HashHandler;t.keyboardHandler=new r(t.multiSelectCommands)}),ace.define("ace/multi_select",["require","exports","module","ace/range_list","ace/range","ace/selection","ace/mouse/multi_select_handler","ace/lib/event","ace/lib/lang","ace/commands/multi_select_commands","ace/search","ace/edit_session","ace/editor","ace/config"],function(e,t,n){function h(e,t,n){return c.$options.wrap=!0,c.$options.needle=t,c.$options.backwards=n==-1,c.find(e)}function v(e,t){return e.row==t.row&&e.column==t.column}function m(e){if(e.$multiselectOnSessionChange)return;e.$onAddRange=e.$onAddRange.bind(e),e.$onRemoveRange=e.$onRemoveRange.bind(e),e.$onMultiSelect=e.$onMultiSelect.bind(e),e.$onSingleSelect=e.$onSingleSelect.bind(e),e.$multiselectOnSessionChange=t.onSessionChange.bind(e),e.$checkMultiselectChange=e.$checkMultiselectChange.bind(e),e.$multiselectOnSessionChange(e),e.on("changeSession",e.$multiselectOnSessionChange),e.on("mousedown",o),e.commands.addCommands(f.defaultCommands),g(e)}function g(e){function r(t){n&&(e.renderer.setMouseCursor(""),n=!1)}var t=e.textInput.getElement(),n=!1;u.addListener(t,"keydown",function(t){t.keyCode==18&&!(t.ctrlKey||t.shiftKey||t.metaKey)?n||(e.renderer.setMouseCursor("crosshair"),n=!0):n&&r()}),u.addListener(t,"keyup",r),u.addListener(t,"blur",r)}var r=e("./range_list").RangeList,i=e("./range").Range,s=e("./selection").Selection,o=e("./mouse/multi_select_handler").onMouseDown,u=e("./lib/event"),a=e("./lib/lang"),f=e("./commands/multi_select_commands");t.commands=f.defaultCommands.concat(f.multiSelectCommands);var l=e("./search").Search,c=new l,p=e("./edit_session").EditSession;(function(){this.getSelectionMarkers=function(){return this.$selectionMarkers}}).call(p.prototype),function(){this.ranges=null,this.rangeList=null,this.addRange=function(e,t){if(!e)return;if(!this.inMultiSelectMode&&this.rangeCount===0){var n=this.toOrientedRange();this.rangeList.add(n),this.rangeList.add(e);if(this.rangeList.ranges.length!=2)return this.rangeList.removeAll(),t||this.fromOrientedRange(e);this.rangeList.removeAll(),this.rangeList.add(n),this.$onAddRange(n)}e.cursor||(e.cursor=e.end);var r=this.rangeList.add(e);return this.$onAddRange(e),r.length&&this.$onRemoveRange(r),this.rangeCount>1&&!this.inMultiSelectMode&&(this._signal("multiSelect"),this.inMultiSelectMode=!0,this.session.$undoSelect=!1,this.rangeList.attach(this.session)),t||this.fromOrientedRange(e)},this.toSingleRange=function(e){e=e||this.ranges[0];var t=this.rangeList.removeAll();t.length&&this.$onRemoveRange(t),e&&this.fromOrientedRange(e)},this.substractPoint=function(e){var t=this.rangeList.substractPoint(e);if(t)return this.$onRemoveRange(t),t[0]},this.mergeOverlappingRanges=function(){var e=this.rangeList.merge();e.length?this.$onRemoveRange(e):this.ranges[0]&&this.fromOrientedRange(this.ranges[0])},this.$onAddRange=function(e){this.rangeCount=this.rangeList.ranges.length,this.ranges.unshift(e),this._signal("addRange",{range:e})},this.$onRemoveRange=function(e){this.rangeCount=this.rangeList.ranges.length;if(this.rangeCount==1&&this.inMultiSelectMode){var t=this.rangeList.ranges.pop();e.push(t),this.rangeCount=0}for(var n=e.length;n--;){var r=this.ranges.indexOf(e[n]);this.ranges.splice(r,1)}this._signal("removeRange",{ranges:e}),this.rangeCount===0&&this.inMultiSelectMode&&(this.inMultiSelectMode=!1,this._signal("singleSelect"),this.session.$undoSelect=!0,this.rangeList.detach(this.session)),t=t||this.ranges[0],t&&!t.isEqual(this.getRange())&&this.fromOrientedRange(t)},this.$initRangeList=function(){if(this.rangeList)return;this.rangeList=new r,this.ranges=[],this.rangeCount=0},this.getAllRanges=function(){return this.rangeCount?this.rangeList.ranges.concat():[this.getRange()]},this.splitIntoLines=function(){if(this.rangeCount>1){var e=this.rangeList.ranges,t=e[e.length-1],n=i.fromPoints(e[0].start,t.end);this.toSingleRange(),this.setSelectionRange(n,t.cursor==t.start)}else{var n=this.getRange(),r=this.isBackwards(),s=n.start.row,o=n.end.row;if(s==o){if(r)var u=n.end,a=n.start;else var u=n.start,a=n.end;this.addRange(i.fromPoints(a,a)),this.addRange(i.fromPoints(u,u));return}var f=[],l=this.getLineRange(s,!0);l.start.column=n.start.column,f.push(l);for(var c=s+1;c<o;c++)f.push(this.getLineRange(c,!0));l=this.getLineRange(o,!0),l.end.column=n.end.column,f.push(l),f.forEach(this.addRange,this)}},this.toggleBlockSelection=function(){if(this.rangeCount>1){var e=this.rangeList.ranges,t=e[e.length-1],n=i.fromPoints(e[0].start,t.end);this.toSingleRange(),this.setSelectionRange(n,t.cursor==t.start)}else{var r=this.session.documentToScreenPosition(this.selectionLead),s=this.session.documentToScreenPosition(this.selectionAnchor),o=this.rectangularRangeBlock(r,s);o.forEach(this.addRange,this)}},this.rectangularRangeBlock=function(e,t,n){var r=[],s=e.column<t.column;if(s)var o=e.column,u=t.column;else var o=t.column,u=e.column;var a=e.row<t.row;if(a)var f=e.row,l=t.row;else var f=t.row,l=e.row;o<0&&(o=0),f<0&&(f=0),f==l&&(n=!0);for(var c=f;c<=l;c++){var h=i.fromPoints(this.session.screenToDocumentPosition(c,o),this.session.screenToDocumentPosition(c,u));if(h.isEmpty()){if(p&&v(h.end,p))break;var p=h.end}h.cursor=s?h.start:h.end,r.push(h)}a&&r.reverse();if(!n){var d=r.length-1;while(r[d].isEmpty()&&d>0)d--;if(d>0){var m=0;while(r[m].isEmpty())m++}for(var g=d;g>=m;g--)r[g].isEmpty()&&r.splice(g,1)}return r}}.call(s.prototype);var d=e("./editor").Editor;(function(){this.updateSelectionMarkers=function(){this.renderer.updateCursor(),this.renderer.updateBackMarkers()},this.addSelectionMarker=function(e){e.cursor||(e.cursor=e.end);var t=this.getSelectionStyle();return e.marker=this.session.addMarker(e,"ace_selection",t),this.session.$selectionMarkers.push(e),this.session.selectionMarkerCount=this.session.$selectionMarkers.length,e},this.removeSelectionMarker=function(e){if(!e.marker)return;this.session.removeMarker(e.marker);var t=this.session.$selectionMarkers.indexOf(e);t!=-1&&this.session.$selectionMarkers.splice(t,1),this.session.selectionMarkerCount=this.session.$selectionMarkers.length},this.removeSelectionMarkers=function(e){var t=this.session.$selectionMarkers;for(var n=e.length;n--;){var r=e[n];if(!r.marker)continue;this.session.removeMarker(r.marker);var i=t.indexOf(r);i!=-1&&t.splice(i,1)}this.session.selectionMarkerCount=t.length},this.$onAddRange=function(e){this.addSelectionMarker(e.range),this.renderer.updateCursor(),this.renderer.updateBackMarkers()},this.$onRemoveRange=function(e){this.removeSelectionMarkers(e.ranges),this.renderer.updateCursor(),this.renderer.updateBackMarkers()},this.$onMultiSelect=function(e){if(this.inMultiSelectMode)return;this.inMultiSelectMode=!0,this.setStyle("ace_multiselect"),this.keyBinding.addKeyboardHandler(f.keyboardHandler),this.commands.setDefaultHandler("exec",this.$onMultiSelectExec),this.renderer.updateCursor(),this.renderer.updateBackMarkers()},this.$onSingleSelect=function(e){if(this.session.multiSelect.inVirtualMode)return;this.inMultiSelectMode=!1,this.unsetStyle("ace_multiselect"),this.keyBinding.removeKeyboardHandler(f.keyboardHandler),this.commands.removeDefaultHandler("exec",this.$onMultiSelectExec),this.renderer.updateCursor(),this.renderer.updateBackMarkers(),this._emit("changeSelection")},this.$onMultiSelectExec=function(e){var t=e.command,n=e.editor;if(!n.multiSelect)return;if(!t.multiSelectAction){var r=t.exec(n,e.args||{});n.multiSelect.addRange(n.multiSelect.toOrientedRange()),n.multiSelect.mergeOverlappingRanges()}else t.multiSelectAction=="forEach"?r=n.forEachSelection(t,e.args):t.multiSelectAction=="forEachLine"?r=n.forEachSelection(t,e.args,!0):t.multiSelectAction=="single"?(n.exitMultiSelectMode(),r=t.exec(n,e.args||{})):r=t.multiSelectAction(n,e.args||{});return r},this.forEachSelection=function(e,t,n){if(this.inVirtualSelectionMode)return;var r=n&&n.keepOrder,i=n==1||n&&n.$byLines,o=this.session,u=this.selection,a=u.rangeList,f=(r?u:a).ranges,l;if(!f.length)return e.exec?e.exec(this,t||{}):e(this,t||{});var c=u._eventRegistry;u._eventRegistry={};var h=new s(o);this.inVirtualSelectionMode=!0;for(var p=f.length;p--;){if(i)while(p>0&&f[p].start.row==f[p-1].end.row)p--;h.fromOrientedRange(f[p]),h.index=p,this.selection=o.selection=h;var d=e.exec?e.exec(this,t||{}):e(this,t||{});!l&&d!==undefined&&(l=d),h.toOrientedRange(f[p])}h.detach(),this.selection=o.selection=u,this.inVirtualSelectionMode=!1,u._eventRegistry=c,u.mergeOverlappingRanges();var v=this.renderer.$scrollAnimation;return this.onCursorChange(),this.onSelectionChange(),v&&v.from==v.to&&this.renderer.animateScrolling(v.from),l},this.exitMultiSelectMode=function(){if(!this.inMultiSelectMode||this.inVirtualSelectionMode)return;this.multiSelect.toSingleRange()},this.getSelectedText=function(){var e="";if(this.inMultiSelectMode&&!this.inVirtualSelectionMode){var t=this.multiSelect.rangeList.ranges,n=[];for(var r=0;r<t.length;r++)n.push(this.session.getTextRange(t[r]));var i=this.session.getDocument().getNewLineCharacter();e=n.join(i),e.length==(n.length-1)*i.length&&(e="")}else this.selection.isEmpty()||(e=this.session.getTextRange(this.getSelectionRange()));return e},this.$checkMultiselectChange=function(e,t){if(this.inMultiSelectMode&&!this.inVirtualSelectionMode){var n=this.multiSelect.ranges[0];if(this.multiSelect.isEmpty()&&t==this.multiSelect.anchor)return;var r=t==this.multiSelect.anchor?n.cursor==n.start?n.end:n.start:n.cursor;v(r,t)||this.multiSelect.toSingleRange(this.multiSelect.toOrientedRange())}},this.onPaste=function(e){if(this.$readOnly)return;var t={text:e};this._signal("paste",t),e=t.text;if(!this.inMultiSelectMode||this.inVirtualSelectionMode)return this.insert(e);var n=e.split(/\r\n|\r|\n/),r=this.selection.rangeList.ranges;if(n.length>r.length||n.length<2||!n[1])return this.commands.exec("insertstring",this,e);for(var i=r.length;i--;){var s=r[i];s.isEmpty()||this.session.remove(s),this.session.insert(s.start,n[i])}},this.findAll=function(e,t,n){t=t||{},t.needle=e||t.needle;if(t.needle==undefined){var r=this.selection.isEmpty()?this.selection.getWordRange():this.selection.getRange();t.needle=this.session.getTextRange(r)}this.$search.set(t);var i=this.$search.findAll(this.session);if(!i.length)return 0;this.$blockScrolling+=1;var s=this.multiSelect;n||s.toSingleRange(i[0]);for(var o=i.length;o--;)s.addRange(i[o],!0);return r&&s.rangeList.rangeAtPoint(r.start)&&s.addRange(r,!0),this.$blockScrolling-=1,i.length},this.selectMoreLines=function(e,t){var n=this.selection.toOrientedRange(),r=n.cursor==n.end,s=this.session.documentToScreenPosition(n.cursor);this.selection.$desiredColumn&&(s.column=this.selection.$desiredColumn);var o=this.session.screenToDocumentPosition(s.row+e,s.column);if(!n.isEmpty())var u=this.session.documentToScreenPosition(r?n.end:n.start),a=this.session.screenToDocumentPosition(u.row+e,u.column);else var a=o;if(r){var f=i.fromPoints(o,a);f.cursor=f.start}else{var f=i.fromPoints(a,o);f.cursor=f.end}f.desiredColumn=s.column;if(!this.selection.inMultiSelectMode)this.selection.addRange(n);else if(t)var l=n.cursor;this.selection.addRange(f),l&&this.selection.substractPoint(l)},this.transposeSelections=function(e){var t=this.session,n=t.multiSelect,r=n.ranges;for(var i=r.length;i--;){var s=r[i];if(s.isEmpty()){var o=t.getWordRange(s.start.row,s.start.column);s.start.row=o.start.row,s.start.column=o.start.column,s.end.row=o.end.row,s.end.column=o.end.column}}n.mergeOverlappingRanges();var u=[];for(var i=r.length;i--;){var s=r[i];u.unshift(t.getTextRange(s))}e<0?u.unshift(u.pop()):u.push(u.shift());for(var i=r.length;i--;){var s=r[i],o=s.clone();t.replace(s,u[i]),s.start.row=o.start.row,s.start.column=o.start.column}},this.selectMore=function(e,t){var n=this.session,r=n.multiSelect,i=r.toOrientedRange();i.isEmpty()&&(i=n.getWordRange(i.start.row,i.start.column),i.cursor=e==-1?i.start:i.end,this.multiSelect.addRange(i));var s=n.getTextRange(i),o=h(n,s,e);o&&(o.cursor=e==-1?o.start:o.end,this.$blockScrolling+=1,this.session.unfold(o),this.multiSelect.addRange(o),this.$blockScrolling-=1,this.renderer.scrollCursorIntoView(null,.5)),t&&this.multiSelect.substractPoint(i.cursor)},this.alignCursors=function(){var e=this.session,t=e.multiSelect,n=t.ranges,r=-1,s=n.filter(function(e){if(e.cursor.row==r)return!0;r=e.cursor.row});if(!n.length||s.length==n.length-1){var o=this.selection.getRange(),u=o.start.row,f=o.end.row,l=u==f;if(l){var c=this.session.getLength(),h;do h=this.session.getLine(f);while(/[=:]/.test(h)&&++f<c);do h=this.session.getLine(u);while(/[=:]/.test(h)&&--u>0);u<0&&(u=0),f>=c&&(f=c-1)}var p=this.session.doc.removeLines(u,f);p=this.$reAlignText(p,l),this.session.doc.insert({row:u,column:0},p.join("\n")+"\n"),l||(o.start.column=0,o.end.column=p[p.length-1].length),this.selection.setRange(o)}else{s.forEach(function(e){t.substractPoint(e.cursor)});var d=0,v=Infinity,m=n.map(function(t){var n=t.cursor,r=e.getLine(n.row),i=r.substr(n.column).search(/\S/g);return i==-1&&(i=0),n.column>d&&(d=n.column),i<v&&(v=i),i});n.forEach(function(t,n){var r=t.cursor,s=d-r.column,o=m[n]-v;s>o?e.insert(r,a.stringRepeat(" ",s-o)):e.remove(new i(r.row,r.column,r.row,r.column-s+o)),t.start.column=t.end.column=d,t.start.row=t.end.row=r.row,t.cursor=t.end}),t.fromOrientedRange(n[0]),this.renderer.updateCursor(),this.renderer.updateBackMarkers()}},this.$reAlignText=function(e,t){function u(e){return a.stringRepeat(" ",e)}function f(e){return e[2]?u(i)+e[2]+u(s-e[2].length+o)+e[4].replace(/^([=:])\s+/,"$1 "):e[0]}function l(e){return e[2]?u(i+s-e[2].length)+e[2]+u(o," ")+e[4].replace(/^([=:])\s+/,"$1 "):e[0]}function c(e){return e[2]?u(i)+e[2]+u(o)+e[4].replace(/^([=:])\s+/,"$1 "):e[0]}var n=!0,r=!0,i,s,o;return e.map(function(e){var t=e.match(/(\s*)(.*?)(\s*)([=:].*)/);return t?i==null?(i=t[1].length,s=t[2].length,o=t[3].length,t):(i+s+o!=t[1].length+t[2].length+t[3].length&&(r=!1),i!=t[1].length&&(n=!1),i>t[1].length&&(i=t[1].length),s<t[2].length&&(s=t[2].length),o>t[3].length&&(o=t[3].length),t):[e]}).map(t?f:n?r?l:f:c)}}).call(d.prototype),t.onSessionChange=function(e){var t=e.session;t.multiSelect||(t.$selectionMarkers=[],t.selection.$initRangeList(),t.multiSelect=t.selection),this.multiSelect=t.multiSelect;var n=e.oldSession;n&&(n.multiSelect.off("addRange",this.$onAddRange),n.multiSelect.off("removeRange",this.$onRemoveRange),n.multiSelect.off("multiSelect",this.$onMultiSelect),n.multiSelect.off("singleSelect",this.$onSingleSelect),n.multiSelect.lead.off("change",this.$checkMultiselectChange),n.multiSelect.anchor.off("change",this.$checkMultiselectChange)),t.multiSelect.on("addRange",this.$onAddRange),t.multiSelect.on("removeRange",this.$onRemoveRange),t.multiSelect.on("multiSelect",this.$onMultiSelect),t.multiSelect.on("singleSelect",this.$onSingleSelect),t.multiSelect.lead.on("change",this.$checkMultiselectChange),t.multiSelect.anchor.on("change",this.$checkMultiselectChange),this.inMultiSelectMode!=t.selection.inMultiSelectMode&&(t.selection.inMultiSelectMode?this.$onMultiSelect():this.$onSingleSelect())},t.MultiSelect=m,e("./config").defineOptions(d.prototype,"editor",{enableMultiselect:{set:function(e){m(this),e?(this.on("changeSession",this.$multiselectOnSessionChange),this.on("mousedown",o)):(this.off("changeSession",this.$multiselectOnSessionChange),this.off("mousedown",o))},value:!0}})}),ace.define("ace/mode/folding/fold_mode",["require","exports","module","ace/range"],function(e,t,n){"use strict";var r=e("../../range").Range,i=t.FoldMode=function(){};(function(){this.foldingStartMarker=null,this.foldingStopMarker=null,this.getFoldWidget=function(e,t,n){var r=e.getLine(n);return this.foldingStartMarker.test(r)?"start":t=="markbeginend"&&this.foldingStopMarker&&this.foldingStopMarker.test(r)?"end":""},this.getFoldWidgetRange=function(e,t,n){return null},this.indentationBlock=function(e,t,n){var i=/\S/,s=e.getLine(t),o=s.search(i);if(o==-1)return;var u=n||s.length,a=e.getLength(),f=t,l=t;while(++t<a){var c=e.getLine(t).search(i);if(c==-1)continue;if(c<=o)break;l=t}if(l>f){var h=e.getLine(l).length;return new r(f,u,l,h)}},this.openingBracketBlock=function(e,t,n,i,s){var o={row:n,column:i+1},u=e.$findClosingBracket(t,o,s);if(!u)return;var a=e.foldWidgets[u.row];return a==null&&(a=e.getFoldWidget(u.row)),a=="start"&&u.row>o.row&&(u.row--,u.column=e.getLine(u.row).length),r.fromPoints(o,u)},this.closingBracketBlock=function(e,t,n,i,s){var o={row:n,column:i},u=e.$findOpeningBracket(t,o);if(!u)return;return u.column++,o.column--,r.fromPoints(u,o)}}).call(i.prototype)}),ace.define("ace/theme/textmate",["require","exports","module","ace/lib/dom"],function(e,t,n){"use strict";t.isDark=!1,t.cssClass="ace-tm",t.cssText='.ace-tm .ace_gutter {background: #f0f0f0;color: #333;}.ace-tm .ace_print-margin {width: 1px;background: #e8e8e8;}.ace-tm .ace_fold {background-color: #6B72E6;}.ace-tm {background-color: #FFFFFF;color: black;}.ace-tm .ace_cursor {color: black;}.ace-tm .ace_invisible {color: rgb(191, 191, 191);}.ace-tm .ace_storage,.ace-tm .ace_keyword {color: blue;}.ace-tm .ace_constant {color: rgb(197, 6, 11);}.ace-tm .ace_constant.ace_buildin {color: rgb(88, 72, 246);}.ace-tm .ace_constant.ace_language {color: rgb(88, 92, 246);}.ace-tm .ace_constant.ace_library {color: rgb(6, 150, 14);}.ace-tm .ace_invalid {background-color: rgba(255, 0, 0, 0.1);color: red;}.ace-tm .ace_support.ace_function {color: rgb(60, 76, 114);}.ace-tm .ace_support.ace_constant {color: rgb(6, 150, 14);}.ace-tm .ace_support.ace_type,.ace-tm .ace_support.ace_class {color: rgb(109, 121, 222);}.ace-tm .ace_keyword.ace_operator {color: rgb(104, 118, 135);}.ace-tm .ace_string {color: rgb(3, 106, 7);}.ace-tm .ace_comment {color: rgb(76, 136, 107);}.ace-tm .ace_comment.ace_doc {color: rgb(0, 102, 255);}.ace-tm .ace_comment.ace_doc.ace_tag {color: rgb(128, 159, 191);}.ace-tm .ace_constant.ace_numeric {color: rgb(0, 0, 205);}.ace-tm .ace_variable {color: rgb(49, 132, 149);}.ace-tm .ace_xml-pe {color: rgb(104, 104, 91);}.ace-tm .ace_entity.ace_name.ace_function {color: #0000A2;}.ace-tm .ace_heading {color: rgb(12, 7, 255);}.ace-tm .ace_list {color:rgb(185, 6, 144);}.ace-tm .ace_meta.ace_tag {color:rgb(0, 22, 142);}.ace-tm .ace_string.ace_regex {color: rgb(255, 0, 0)}.ace-tm .ace_marker-layer .ace_selection {background: rgb(181, 213, 255);}.ace-tm.ace_multiselect .ace_selection.ace_start {box-shadow: 0 0 3px 0px white;border-radius: 2px;}.ace-tm .ace_marker-layer .ace_step {background: rgb(252, 255, 0);}.ace-tm .ace_marker-layer .ace_stack {background: rgb(164, 229, 101);}.ace-tm .ace_marker-layer .ace_bracket {margin: -1px 0 0 -1px;border: 1px solid rgb(192, 192, 192);}.ace-tm .ace_marker-layer .ace_active-line {background: rgba(0, 0, 0, 0.07);}.ace-tm .ace_gutter-active-line {background-color : #dcdcdc;}.ace-tm .ace_marker-layer .ace_selected-word {background: rgb(250, 250, 255);border: 1px solid rgb(200, 200, 250);}.ace-tm .ace_indent-guide {background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAE0lEQVQImWP4////f4bLly//BwAmVgd1/w11/gAAAABJRU5ErkJggg==") right repeat-y;}';var r=e("../lib/dom");r.importCssString(t.cssText,t.cssClass)}),ace.define("ace/line_widgets",["require","exports","module","ace/lib/oop","ace/lib/dom","ace/range"],function(e,t,n){"use strict";function o(e){this.session=e,this.session.widgetManager=this,this.session.getRowLength=this.getRowLength,this.session.$getWidgetScreenLength=this.$getWidgetScreenLength,this.updateOnChange=this.updateOnChange.bind(this),this.renderWidgets=this.renderWidgets.bind(this),this.measureWidgets=this.measureWidgets.bind(this),this.session._changedWidgets=[],this.detach=this.detach.bind(this),this.session.on("change",this.updateOnChange)}var r=e("./lib/oop"),i=e("./lib/dom"),s=e("./range").Range;(function(){this.getRowLength=function(e){var t;return this.lineWidgets?t=this.lineWidgets[e]&&this.lineWidgets[e].rowCount||0:t=0,!this.$useWrapMode||!this.$wrapData[e]?1+t:this.$wrapData[e].length+1+t},this.$getWidgetScreenLength=function(){var e=0;return this.lineWidgets.forEach(function(t){t&&t.rowCount&&(e+=t.rowCount)}),e},this.attach=function(e){e.widgetManager&&e.widgetManager!=this&&e.widgetManager.detach();if(this.editor==e)return;this.detach(),this.editor=e,this.editor.on("changeSession",this.detach),e.widgetManager=this,e.renderer.on("beforeRender",this.measureWidgets),e.renderer.on("afterRender",this.renderWidgets)},this.detach=function(e){if(e&&e.session==this.session)return;var t=this.editor;if(!t)return;t.off("changeSession",this.detach),this.editor=null,t.widgetManager=null,t.renderer.off("beforeRender",this.measureWidgets),t.renderer.off("afterRender",this.renderWidgets);var n=this.session.lineWidgets;n&&n.forEach(function(e){e&&e.el&&e.el.parentNode&&(e._inDocument=!1,e.el.parentNode.removeChild(e.el))})},this.updateOnChange=function(e){var t=this.session.lineWidgets;if(!t)return;var n=e.data,r=n.range,i=r.start.row,s=r.end.row-i;if(s!==0)if(n.action=="removeText"||n.action=="removeLines"){var o=t.splice(i+1,s);o.forEach(function(e){e&&this.removeLineWidget(e)},this),this.$updateRows()}else{var u=new Array(s);u.unshift(i,0),t.splice.apply(t,u),this.$updateRows()}},this.$updateRows=function(){var e=this.session.lineWidgets;if(!e)return;var t=!0;e.forEach(function(e,n){e&&(t=!1,e.row=n)}),t&&(this.session.lineWidgets=null)},this.addLineWidget=function(e){this.session.lineWidgets||(this.session.lineWidgets=new Array(this.session.getLength())),this.session.lineWidgets[e.row]=e;var t=this.editor.renderer;return e.html&&!e.el&&(e.el=i.createElement("div"),e.el.innerHTML=e.html),e.el&&(i.addCssClass(e.el,"ace_lineWidgetContainer"),e.el.style.position="absolute",e.el.style.zIndex=5,t.container.appendChild(e.el),e._inDocument=!0),e.coverGutter||(e.el.style.zIndex=3),e.pixelHeight||(e.pixelHeight=e.el.offsetHeight),e.rowCount==null&&(e.rowCount=e.pixelHeight/t.layerConfig.lineHeight),this.session._emit("changeFold",{data:{start:{row:e.row}}}),this.$updateRows(),this.renderWidgets(null,t),e},this.removeLineWidget=function(e){e._inDocument=!1,e.el&&e.el.parentNode&&e.el.parentNode.removeChild(e.el);if(e.editor&&e.editor.destroy)try{e.editor.destroy()}catch(t){}this.session.lineWidgets&&(this.session.lineWidgets[e.row]=undefined),this.session._emit("changeFold",{data:{start:{row:e.row}}}),this.$updateRows()},this.onWidgetChanged=function(e){this.session._changedWidgets.push(e),this.editor&&this.editor.renderer.updateFull()},this.measureWidgets=function(e,t){var n=this.session._changedWidgets,r=t.layerConfig;if(!n||!n.length)return;var i=Infinity;for(var s=0;s<n.length;s++){var o=n[s];o._inDocument||(o._inDocument=!0,t.container.appendChild(o.el)),o.h=o.el.offsetHeight,o.fixedWidth||(o.w=o.el.offsetWidth,o.screenWidth=Math.ceil(o.w/r.characterWidth));var u=o.h/r.lineHeight;o.coverLine&&(u-=this.session.getRowLineCount(o.row),u<0&&(u=0)),o.rowCount!=u&&(o.rowCount=u,o.row<i&&(i=o.row))}i!=Infinity&&(this.session._emit("changeFold",{data:{start:{row:i}}}),this.session.lineWidgetWidth=null),this.session._changedWidgets=[]},this.renderWidgets=function(e,t){var n=t.layerConfig,r=this.session.lineWidgets;if(!r)return;var i=Math.min(this.firstRow,n.firstRow),s=Math.max(this.lastRow,n.lastRow,r.length);while(i>0&&!r[i])i--;this.firstRow=n.firstRow,this.lastRow=n.lastRow,t.$cursorLayer.config=n;for(var o=i;o<=s;o++){var u=r[o];if(!u||!u.el)continue;u._inDocument||(u._inDocument=!0,t.container.appendChild(u.el));var a=t.$cursorLayer.getPixelPosition({row:o,column:0},!0).top;u.coverLine||(a+=n.lineHeight*this.session.getRowLineCount(u.row)),u.el.style.top=a-n.offset+"px";var f=u.coverGutter?0:t.gutterWidth;u.fixedWidth||(f-=t.scrollLeft),u.el.style.left=f+"px",u.fixedWidth?u.el.style.right=t.scrollBar.getWidth()+"px":u.el.style.right=""}}}).call(o.prototype),t.LineWidgets=o}),ace.define("ace/ext/error_marker",["require","exports","module","ace/line_widgets","ace/lib/dom","ace/range"],function(e,t,n){"use strict";function o(e,t,n){var r=0,i=e.length-1;while(r<=i){var s=r+i>>1,o=n(t,e[s]);if(o>0)r=s+1;else{if(!(o<0))return s;i=s-1}}return-(r+1)}function u(e,t,n){var r=e.getAnnotations().sort(s.comparePoints);if(!r.length)return;var i=o(r,{row:t,column:-1},s.comparePoints);i<0&&(i=-i-1),i>=r.length-1?i=n>0?0:r.length-1:i===0&&n<0&&(i=r.length-1);var u=r[i];if(!u||!n)return;if(u.row===t){do u=r[i+=n];while(u&&u.row===t);if(!u)return r.slice()}var a=[];t=u.row;do a[n<0?"unshift":"push"](u),u=r[i+=n];while(u&&u.row==t);return a.length&&a}var r=e("ace/line_widgets").LineWidgets,i=e("ace/lib/dom"),s=e("ace/range").Range;t.showErrorMarker=function(e,t){var n=e.session;n.widgetManager||(n.widgetManager=new r(n),n.widgetManager.attach(e));var s=e.getCursorPosition(),o=s.row,a=n.lineWidgets&&n.lineWidgets[o];a?a.destroy():o-=t;var f=u(n,o,t),l;if(f){var c=f[0];s.column=(c.pos&&typeof c.column!="number"?c.pos.sc:c.column)||0,s.row=c.row,l=e.renderer.$gutterLayer.$annotations[s.row]}else{if(a)return;l={text:["Looks good!"],className:"ace_ok"}}e.session.unfold(s.row),e.selection.moveToPosition(s);var h={row:s.row,fixedWidth:!0,coverGutter:!0,el:i.createElement("div")},p=h.el.appendChild(i.createElement("div")),d=h.el.appendChild(i.createElement("div"));d.className="error_widget_arrow "+l.className;var v=e.renderer.$cursorLayer.getPixelPosition(s).left;d.style.left=v+e.renderer.gutterWidth-5+"px",h.el.className="error_widget_wrapper",p.className="error_widget "+l.className,p.innerHTML=l.text.join("<br>"),p.appendChild(i.createElement("div"));var m=function(e,t,n){if(t===0&&(n==="esc"||n==="return"))return h.destroy(),{command:"null"}};h.destroy=function(){if(e.$mouseHandler.isMousePressed)return;e.keyBinding.removeKeyboardHandler(m),n.widgetManager.removeLineWidget(h),e.off("changeSelection",h.destroy),e.off("changeSession",h.destroy),e.off("mouseup",h.destroy),e.off("change",h.destroy)},e.keyBinding.addKeyboardHandler(m),e.on("changeSelection",h.destroy),e.on("changeSession",h.destroy),e.on("mouseup",h.destroy),e.on("change",h.destroy),e.session.widgetManager.addLineWidget(h),h.el.onmousedown=e.focus.bind(e),e.renderer.scrollCursorIntoView(null,.5,{bottom:h.el.offsetHeight})},i.importCssString("    .error_widget_wrapper {        background: inherit;        color: inherit;        border:none    }    .error_widget {        border-top: solid 2px;        border-bottom: solid 2px;        margin: 5px 0;        padding: 10px 40px;        white-space: pre-wrap;    }    .error_widget.ace_error, .error_widget_arrow.ace_error{        border-color: #ff5a5a    }    .error_widget.ace_warning, .error_widget_arrow.ace_warning{        border-color: #F1D817    }    .error_widget.ace_info, .error_widget_arrow.ace_info{        border-color: #5a5a5a    }    .error_widget.ace_ok, .error_widget_arrow.ace_ok{        border-color: #5aaa5a    }    .error_widget_arrow {        position: absolute;        border: solid 5px;        border-top-color: transparent!important;        border-right-color: transparent!important;        border-left-color: transparent!important;        top: -5px;    }","")}),ace.define("ace/ace",["require","exports","module","ace/lib/fixoldbrowsers","ace/lib/dom","ace/lib/event","ace/editor","ace/edit_session","ace/undomanager","ace/virtual_renderer","ace/worker/worker_client","ace/keyboard/hash_handler","ace/placeholder","ace/multi_select","ace/mode/folding/fold_mode","ace/theme/textmate","ace/ext/error_marker","ace/config"],function(e,t,n){"use strict";e("./lib/fixoldbrowsers");var r=e("./lib/dom"),i=e("./lib/event"),s=e("./editor").Editor,o=e("./edit_session").EditSession,u=e("./undomanager").UndoManager,a=e("./virtual_renderer").VirtualRenderer;e("./worker/worker_client"),e("./keyboard/hash_handler"),e("./placeholder"),e("./multi_select"),e("./mode/folding/fold_mode"),e("./theme/textmate"),e("./ext/error_marker"),t.config=e("./config"),t.require=e,t.edit=function(e){if(typeof e=="string"){var n=e;e=document.getElementById(n);if(!e)throw new Error("ace.edit can't find div #"+n)}if(e.env&&e.env.editor instanceof s)return e.env.editor;var o=t.createEditSession(r.getInnerText(e));e.innerHTML="";var u=new s(new a(e));u.setSession(o);var f={document:o,editor:u,onResize:u.resize.bind(u,null)};return i.addListener(window,"resize",f.onResize),u.on("destroy",function(){i.removeListener(window,"resize",f.onResize)}),e.env=u.env=f,u},t.createEditSession=function(e,t){var n=new o(e,t);return n.setUndoManager(new u),n},t.EditSession=o,t.UndoManager=u});
+            (function() {
+                ace.require(["ace/ace"], function(a) {
+                    a && a.config.init(true);
+                    if (!window.ace)
+                        window.ace = a;
+                    for (var key in a) if (a.hasOwnProperty(key))
+                        window.ace[key] = a[key];
+                });
+            })();
+        
\ No newline at end of file
diff --git a/v3/js/ace/src-min-noconflict/mode-java.js b/v3/js/ace/src-min-noconflict/mode-java.js
new file mode 100644
index 000000000..8bfb6de42
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/mode-java.js
@@ -0,0 +1 @@
+ace.define("ace/mode/doc_comment_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text_highlight_rules").TextHighlightRules,s=function(){this.$rules={start:[{token:"comment.doc.tag",regex:"@[\\w\\d_]+"},s.getTagRule(),{defaultToken:"comment.doc",caseInsensitive:!0}]}};r.inherits(s,i),s.getTagRule=function(e){return{token:"comment.doc.tag.storage.type",regex:"\\b(?:TODO|FIXME|XXX|HACK)\\b"}},s.getStartRule=function(e){return{token:"comment.doc",regex:"\\/\\*(?=\\*)",next:e}},s.getEndRule=function(e){return{token:"comment.doc",regex:"\\*\\/",next:e}},t.DocCommentHighlightRules=s}),ace.define("ace/mode/javascript_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/doc_comment_highlight_rules","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./doc_comment_highlight_rules").DocCommentHighlightRules,s=e("./text_highlight_rules").TextHighlightRules,o=function(e){var t=this.createKeywordMapper({"variable.language":"Array|Boolean|Date|Function|Iterator|Number|Object|RegExp|String|Proxy|Namespace|QName|XML|XMLList|ArrayBuffer|Float32Array|Float64Array|Int16Array|Int32Array|Int8Array|Uint16Array|Uint32Array|Uint8Array|Uint8ClampedArray|Error|EvalError|InternalError|RangeError|ReferenceError|StopIteration|SyntaxError|TypeError|URIError|decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|eval|isFinite|isNaN|parseFloat|parseInt|JSON|Math|this|arguments|prototype|window|document",keyword:"const|yield|import|get|set|break|case|catch|continue|default|delete|do|else|finally|for|function|if|in|instanceof|new|return|switch|throw|try|typeof|let|var|while|with|debugger|__parent__|__count__|escape|unescape|with|__proto__|class|enum|extends|super|export|implements|private|public|interface|package|protected|static","storage.type":"const|let|var|function","constant.language":"null|Infinity|NaN|undefined","support.function":"alert","constant.language.boolean":"true|false"},"identifier"),n="case|do|else|finally|in|instanceof|return|throw|try|typeof|yield|void",r="[a-zA-Z\\$_\u00a1-\uffff][a-zA-Z\\d\\$_\u00a1-\uffff]*\\b",s="\\\\(?:x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4}|[0-2][0-7]{0,2}|3[0-6][0-7]?|37[0-7]?|[4-7][0-7]?|.)";this.$rules={no_regex:[{token:"comment",regex:"\\/\\/",next:"line_comment"},i.getStartRule("doc-start"),{token:"comment",regex:/\/\*/,next:"comment"},{token:"string",regex:"'(?=.)",next:"qstring"},{token:"string",regex:'"(?=.)',next:"qqstring"},{token:"constant.numeric",regex:/0[xX][0-9a-fA-F]+\b/},{token:"constant.numeric",regex:/[+-]?\d+(?:(?:\.\d*)?(?:[eE][+-]?\d+)?)?\b/},{token:["storage.type","punctuation.operator","support.function","punctuation.operator","entity.name.function","text","keyword.operator"],regex:"("+r+")(\\.)(prototype)(\\.)("+r+")(\\s*)(=)",next:"function_arguments"},{token:["storage.type","punctuation.operator","entity.name.function","text","keyword.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\.)("+r+")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["entity.name.function","text","keyword.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["storage.type","punctuation.operator","entity.name.function","text","keyword.operator","text","storage.type","text","entity.name.function","text","paren.lparen"],regex:"("+r+")(\\.)("+r+")(\\s*)(=)(\\s*)(function)(\\s+)(\\w+)(\\s*)(\\()",next:"function_arguments"},{token:["storage.type","text","entity.name.function","text","paren.lparen"],regex:"(function)(\\s+)("+r+")(\\s*)(\\()",next:"function_arguments"},{token:["entity.name.function","text","punctuation.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\s*)(:)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["text","text","storage.type","text","paren.lparen"],regex:"(:)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:"keyword",regex:"(?:"+n+")\\b",next:"start"},{token:["punctuation.operator","support.function"],regex:/(\.)(s(?:h(?:ift|ow(?:Mod(?:elessDialog|alDialog)|Help))|croll(?:X|By(?:Pages|Lines)?|Y|To)?|t(?:op|rike)|i(?:n|zeToContent|debar|gnText)|ort|u(?:p|b(?:str(?:ing)?)?)|pli(?:ce|t)|e(?:nd|t(?:Re(?:sizable|questHeader)|M(?:i(?:nutes|lliseconds)|onth)|Seconds|Ho(?:tKeys|urs)|Year|Cursor|Time(?:out)?|Interval|ZOptions|Date|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Date|FullYear)|FullYear|Active)|arch)|qrt|lice|avePreferences|mall)|h(?:ome|andleEvent)|navigate|c(?:har(?:CodeAt|At)|o(?:s|n(?:cat|textual|firm)|mpile)|eil|lear(?:Timeout|Interval)?|a(?:ptureEvents|ll)|reate(?:StyleSheet|Popup|EventObject))|t(?:o(?:GMTString|S(?:tring|ource)|U(?:TCString|pperCase)|Lo(?:caleString|werCase))|est|a(?:n|int(?:Enabled)?))|i(?:s(?:NaN|Finite)|ndexOf|talics)|d(?:isableExternalCapture|ump|etachEvent)|u(?:n(?:shift|taint|escape|watch)|pdateCommands)|j(?:oin|avaEnabled)|p(?:o(?:p|w)|ush|lugins.refresh|a(?:ddings|rse(?:Int|Float)?)|r(?:int|ompt|eference))|e(?:scape|nableExternalCapture|val|lementFromPoint|x(?:p|ec(?:Script|Command)?))|valueOf|UTC|queryCommand(?:State|Indeterm|Enabled|Value)|f(?:i(?:nd|le(?:ModifiedDate|Size|CreatedDate|UpdatedDate)|xed)|o(?:nt(?:size|color)|rward)|loor|romCharCode)|watch|l(?:ink|o(?:ad|g)|astIndexOf)|a(?:sin|nchor|cos|t(?:tachEvent|ob|an(?:2)?)|pply|lert|b(?:s|ort))|r(?:ou(?:nd|teEvents)|e(?:size(?:By|To)|calc|turnValue|place|verse|l(?:oad|ease(?:Capture|Events)))|andom)|g(?:o|et(?:ResponseHeader|M(?:i(?:nutes|lliseconds)|onth)|Se(?:conds|lection)|Hours|Year|Time(?:zoneOffset)?|Da(?:y|te)|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Da(?:y|te)|FullYear)|FullYear|A(?:ttention|llResponseHeaders)))|m(?:in|ove(?:B(?:y|elow)|To(?:Absolute)?|Above)|ergeAttributes|a(?:tch|rgins|x))|b(?:toa|ig|o(?:ld|rderWidths)|link|ack))\b(?=\()/},{token:["punctuation.operator","support.function.dom"],regex:/(\.)(s(?:ub(?:stringData|mit)|plitText|e(?:t(?:NamedItem|Attribute(?:Node)?)|lect))|has(?:ChildNodes|Feature)|namedItem|c(?:l(?:ick|o(?:se|neNode))|reate(?:C(?:omment|DATASection|aption)|T(?:Head|extNode|Foot)|DocumentFragment|ProcessingInstruction|E(?:ntityReference|lement)|Attribute))|tabIndex|i(?:nsert(?:Row|Before|Cell|Data)|tem)|open|delete(?:Row|C(?:ell|aption)|T(?:Head|Foot)|Data)|focus|write(?:ln)?|a(?:dd|ppend(?:Child|Data))|re(?:set|place(?:Child|Data)|move(?:NamedItem|Child|Attribute(?:Node)?)?)|get(?:NamedItem|Element(?:sBy(?:Name|TagName)|ById)|Attribute(?:Node)?)|blur)\b(?=\()/},{token:["punctuation.operator","support.constant"],regex:/(\.)(s(?:ystemLanguage|cr(?:ipts|ollbars|een(?:X|Y|Top|Left))|t(?:yle(?:Sheets)?|atus(?:Text|bar)?)|ibling(?:Below|Above)|ource|uffixes|e(?:curity(?:Policy)?|l(?:ection|f)))|h(?:istory|ost(?:name)?|as(?:h|Focus))|y|X(?:MLDocument|SLDocument)|n(?:ext|ame(?:space(?:s|URI)|Prop))|M(?:IN_VALUE|AX_VALUE)|c(?:haracterSet|o(?:n(?:structor|trollers)|okieEnabled|lorDepth|mp(?:onents|lete))|urrent|puClass|l(?:i(?:p(?:boardData)?|entInformation)|osed|asses)|alle(?:e|r)|rypto)|t(?:o(?:olbar|p)|ext(?:Transform|Indent|Decoration|Align)|ags)|SQRT(?:1_2|2)|i(?:n(?:ner(?:Height|Width)|put)|ds|gnoreCase)|zIndex|o(?:scpu|n(?:readystatechange|Line)|uter(?:Height|Width)|p(?:sProfile|ener)|ffscreenBuffering)|NEGATIVE_INFINITY|d(?:i(?:splay|alog(?:Height|Top|Width|Left|Arguments)|rectories)|e(?:scription|fault(?:Status|Ch(?:ecked|arset)|View)))|u(?:ser(?:Profile|Language|Agent)|n(?:iqueID|defined)|pdateInterval)|_content|p(?:ixelDepth|ort|ersonalbar|kcs11|l(?:ugins|atform)|a(?:thname|dding(?:Right|Bottom|Top|Left)|rent(?:Window|Layer)?|ge(?:X(?:Offset)?|Y(?:Offset)?))|r(?:o(?:to(?:col|type)|duct(?:Sub)?|mpter)|e(?:vious|fix)))|e(?:n(?:coding|abledPlugin)|x(?:ternal|pando)|mbeds)|v(?:isibility|endor(?:Sub)?|Linkcolor)|URLUnencoded|P(?:I|OSITIVE_INFINITY)|f(?:ilename|o(?:nt(?:Size|Family|Weight)|rmName)|rame(?:s|Element)|gColor)|E|whiteSpace|l(?:i(?:stStyleType|n(?:eHeight|kColor))|o(?:ca(?:tion(?:bar)?|lName)|wsrc)|e(?:ngth|ft(?:Context)?)|a(?:st(?:M(?:odified|atch)|Index|Paren)|yer(?:s|X)|nguage))|a(?:pp(?:MinorVersion|Name|Co(?:deName|re)|Version)|vail(?:Height|Top|Width|Left)|ll|r(?:ity|guments)|Linkcolor|bove)|r(?:ight(?:Context)?|e(?:sponse(?:XML|Text)|adyState))|global|x|m(?:imeTypes|ultiline|enubar|argin(?:Right|Bottom|Top|Left))|L(?:N(?:10|2)|OG(?:10E|2E))|b(?:o(?:ttom|rder(?:Width|RightWidth|BottomWidth|Style|Color|TopWidth|LeftWidth))|ufferDepth|elow|ackground(?:Color|Image)))\b/},{token:["support.constant"],regex:/that\b/},{token:["storage.type","punctuation.operator","support.function.firebug"],regex:/(console)(\.)(warn|info|log|error|time|trace|timeEnd|assert)\b/},{token:t,regex:r},{token:"keyword.operator",regex:/--|\+\+|===|==|=|!=|!==|<=|>=|<<=|>>=|>>>=|<>|<|>|!|&&|\|\||\?\:|[!$%&*+\-~\/^]=?/,next:"start"},{token:"punctuation.operator",regex:/[?:,;.]/,next:"start"},{token:"paren.lparen",regex:/[\[({]/,next:"start"},{token:"paren.rparen",regex:/[\])}]/},{token:"comment",regex:/^#!.*$/}],start:[i.getStartRule("doc-start"),{token:"comment",regex:"\\/\\*",next:"comment_regex_allowed"},{token:"comment",regex:"\\/\\/",next:"line_comment_regex_allowed"},{token:"string.regexp",regex:"\\/",next:"regex"},{token:"text",regex:"\\s+|^$",next:"start"},{token:"empty",regex:"",next:"no_regex"}],regex:[{token:"regexp.keyword.operator",regex:"\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"},{token:"string.regexp",regex:"/[sxngimy]*",next:"no_regex"},{token:"invalid",regex:/\{\d+\b,?\d*\}[+*]|[+*$^?][+*]|[$^][?]|\?{3,}/},{token:"constant.language.escape",regex:/\(\?[:=!]|\)|\{\d+\b,?\d*\}|[+*]\?|[()$^+*?.]/},{token:"constant.language.delimiter",regex:/\|/},{token:"constant.language.escape",regex:/\[\^?/,next:"regex_character_class"},{token:"empty",regex:"$",next:"no_regex"},{defaultToken:"string.regexp"}],regex_character_class:[{token:"regexp.charclass.keyword.operator",regex:"\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"},{token:"constant.language.escape",regex:"]",next:"regex"},{token:"constant.language.escape",regex:"-"},{token:"empty",regex:"$",next:"no_regex"},{defaultToken:"string.regexp.charachterclass"}],function_arguments:[{token:"variable.parameter",regex:r},{token:"punctuation.operator",regex:"[, ]+"},{token:"punctuation.operator",regex:"$"},{token:"empty",regex:"",next:"no_regex"}],comment_regex_allowed:[i.getTagRule(),{token:"comment",regex:"\\*\\/",next:"start"},{defaultToken:"comment",caseInsensitive:!0}],comment:[i.getTagRule(),{token:"comment",regex:"\\*\\/",next:"no_regex"},{defaultToken:"comment",caseInsensitive:!0}],line_comment_regex_allowed:[i.getTagRule(),{token:"comment",regex:"$|^",next:"start"},{defaultToken:"comment",caseInsensitive:!0}],line_comment:[i.getTagRule(),{token:"comment",regex:"$|^",next:"no_regex"},{defaultToken:"comment",caseInsensitive:!0}],qqstring:[{token:"constant.language.escape",regex:s},{token:"string",regex:"\\\\$",next:"qqstring"},{token:"string",regex:'"|$',next:"no_regex"},{defaultToken:"string"}],qstring:[{token:"constant.language.escape",regex:s},{token:"string",regex:"\\\\$",next:"qstring"},{token:"string",regex:"'|$",next:"no_regex"},{defaultToken:"string"}]},(!e||!e.noES6)&&this.$rules.no_regex.unshift({regex:"[{}]",onMatch:function(e,t,n){this.next=e=="{"?this.nextState:"";if(e=="{"&&n.length)return n.unshift("start",t),"paren";if(e=="}"&&n.length){n.shift(),this.next=n.shift();if(this.next.indexOf("string")!=-1)return"paren.quasi.end"}return e=="{"?"paren.lparen":"paren.rparen"},nextState:"start"},{token:"string.quasi.start",regex:/`/,push:[{token:"constant.language.escape",regex:s},{token:"paren.quasi.start",regex:/\${/,push:"start"},{token:"string.quasi.end",regex:/`/,next:"pop"},{defaultToken:"string.quasi"}]}),this.embedRules(i,"doc-",[i.getEndRule("no_regex")]),this.normalizeRules()};r.inherits(o,s),t.JavaScriptHighlightRules=o}),ace.define("ace/mode/matching_brace_outdent",["require","exports","module","ace/range"],function(e,t,n){"use strict";var r=e("../range").Range,i=function(){};(function(){this.checkOutdent=function(e,t){return/^\s+$/.test(e)?/^\s*\}/.test(t):!1},this.autoOutdent=function(e,t){var n=e.getLine(t),i=n.match(/^(\s*\})/);if(!i)return 0;var s=i[1].length,o=e.findMatchingBracket({row:t,column:s});if(!o||o.row==t)return 0;var u=this.$getIndent(e.getLine(o.row));e.replace(new r(t,0,t,s-1),u)},this.$getIndent=function(e){return e.match(/^\s*/)[0]}}).call(i.prototype),t.MatchingBraceOutdent=i}),ace.define("ace/mode/behaviour/cstyle",["require","exports","module","ace/lib/oop","ace/mode/behaviour","ace/token_iterator","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../behaviour").Behaviour,s=e("../../token_iterator").TokenIterator,o=e("../../lib/lang"),u=["text","paren.rparen","punctuation.operator"],a=["text","paren.rparen","punctuation.operator","comment"],f,l={},c=function(e){var t=-1;e.multiSelect&&(t=e.selection.index,l.rangeCount!=e.multiSelect.rangeCount&&(l={rangeCount:e.multiSelect.rangeCount}));if(l[t])return f=l[t];f=l[t]={autoInsertedBrackets:0,autoInsertedRow:-1,autoInsertedLineEnd:"",maybeInsertedBrackets:0,maybeInsertedRow:-1,maybeInsertedLineStart:"",maybeInsertedLineEnd:""}},h=function(){this.add("braces","insertion",function(e,t,n,r,i){var s=n.getCursorPosition(),u=r.doc.getLine(s.row);if(i=="{"){c(n);var a=n.getSelectionRange(),l=r.doc.getTextRange(a);if(l!==""&&l!=="{"&&n.getWrapBehavioursEnabled())return{text:"{"+l+"}",selection:!1};if(h.isSaneInsertion(n,r))return/[\]\}\)]/.test(u[s.column])||n.inMultiSelectMode?(h.recordAutoInsert(n,r,"}"),{text:"{}",selection:[1,1]}):(h.recordMaybeInsert(n,r,"{"),{text:"{",selection:[1,1]})}else if(i=="}"){c(n);var p=u.substring(s.column,s.column+1);if(p=="}"){var d=r.$findOpeningBracket("}",{column:s.column+1,row:s.row});if(d!==null&&h.isAutoInsertedClosing(s,u,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}else{if(i=="\n"||i=="\r\n"){c(n);var v="";h.isMaybeInsertedClosing(s,u)&&(v=o.stringRepeat("}",f.maybeInsertedBrackets),h.clearMaybeInsertedClosing());var p=u.substring(s.column,s.column+1);if(p==="}"){var m=r.findMatchingBracket({row:s.row,column:s.column+1},"}");if(!m)return null;var g=this.$getIndent(r.getLine(m.row))}else{if(!v){h.clearMaybeInsertedClosing();return}var g=this.$getIndent(u)}var y=g+r.getTabString();return{text:"\n"+y+"\n"+g+v,selection:[1,y.length,1,y.length]}}h.clearMaybeInsertedClosing()}}),this.add("braces","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="{"){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.end.column,i.end.column+1);if(u=="}")return i.end.column++,i;f.maybeInsertedBrackets--}}),this.add("parens","insertion",function(e,t,n,r,i){if(i=="("){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return{text:"("+o+")",selection:!1};if(h.isSaneInsertion(n,r))return h.recordAutoInsert(n,r,")"),{text:"()",selection:[1,1]}}else if(i==")"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f==")"){var l=r.$findOpeningBracket(")",{column:u.column+1,row:u.row});if(l!==null&&h.isAutoInsertedClosing(u,a,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("parens","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="("){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==")")return i.end.column++,i}}),this.add("brackets","insertion",function(e,t,n,r,i){if(i=="["){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return{text:"["+o+"]",selection:!1};if(h.isSaneInsertion(n,r))return h.recordAutoInsert(n,r,"]"),{text:"[]",selection:[1,1]}}else if(i=="]"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f=="]"){var l=r.$findOpeningBracket("]",{column:u.column+1,row:u.row});if(l!==null&&h.isAutoInsertedClosing(u,a,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("brackets","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="["){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u=="]")return i.end.column++,i}}),this.add("string_dquotes","insertion",function(e,t,n,r,i){if(i=='"'||i=="'"){c(n);var s=i,o=n.getSelectionRange(),u=r.doc.getTextRange(o);if(u!==""&&u!=="'"&&u!='"'&&n.getWrapBehavioursEnabled())return{text:s+u+s,selection:!1};var a=n.getCursorPosition(),f=r.doc.getLine(a.row),l=f.substring(a.column-1,a.column),h=f.substring(a.column,a.column+1),p=r.getTokenAt(a.row,a.column),d=r.getTokenAt(a.row,a.column+1);if(l=="\\"&&p&&/escape/.test(p.type))return null;var v=p&&/string/.test(p.type),m=!d||/string/.test(d.type),g;if(h==s)g=v!==m;else{if(v&&!m)return null;if(v&&m)return null;var y=r.$mode.tokenRe;y.lastIndex=0;var b=y.test(l);y.lastIndex=0;var w=y.test(l);if(b||w)return null;if(h&&!/[\s;,.})\]\\]/.test(h))return null;g=!0}return{text:g?s+s:"",selection:[1,1]}}}),this.add("string_dquotes","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&(s=='"'||s=="'")){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==s)return i.end.column++,i}})};h.isSaneInsertion=function(e,t){var n=e.getCursorPosition(),r=new s(t,n.row,n.column);if(!this.$matchTokenType(r.getCurrentToken()||"text",u)){var i=new s(t,n.row,n.column+1);if(!this.$matchTokenType(i.getCurrentToken()||"text",u))return!1}return r.stepForward(),r.getCurrentTokenRow()!==n.row||this.$matchTokenType(r.getCurrentToken()||"text",a)},h.$matchTokenType=function(e,t){return t.indexOf(e.type||e)>-1},h.recordAutoInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isAutoInsertedClosing(r,i,f.autoInsertedLineEnd[0])||(f.autoInsertedBrackets=0),f.autoInsertedRow=r.row,f.autoInsertedLineEnd=n+i.substr(r.column),f.autoInsertedBrackets++},h.recordMaybeInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isMaybeInsertedClosing(r,i)||(f.maybeInsertedBrackets=0),f.maybeInsertedRow=r.row,f.maybeInsertedLineStart=i.substr(0,r.column)+n,f.maybeInsertedLineEnd=i.substr(r.column),f.maybeInsertedBrackets++},h.isAutoInsertedClosing=function(e,t,n){return f.autoInsertedBrackets>0&&e.row===f.autoInsertedRow&&n===f.autoInsertedLineEnd[0]&&t.substr(e.column)===f.autoInsertedLineEnd},h.isMaybeInsertedClosing=function(e,t){return f.maybeInsertedBrackets>0&&e.row===f.maybeInsertedRow&&t.substr(e.column)===f.maybeInsertedLineEnd&&t.substr(0,e.column)==f.maybeInsertedLineStart},h.popAutoInsertedClosing=function(){f.autoInsertedLineEnd=f.autoInsertedLineEnd.substr(1),f.autoInsertedBrackets--},h.clearMaybeInsertedClosing=function(){f&&(f.maybeInsertedBrackets=0,f.maybeInsertedRow=-1)},r.inherits(h,i),t.CstyleBehaviour=h}),ace.define("ace/mode/folding/cstyle",["require","exports","module","ace/lib/oop","ace/range","ace/mode/folding/fold_mode"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../../range").Range,s=e("./fold_mode").FoldMode,o=t.FoldMode=function(e){e&&(this.foldingStartMarker=new RegExp(this.foldingStartMarker.source.replace(/\|[^|]*?$/,"|"+e.start)),this.foldingStopMarker=new RegExp(this.foldingStopMarker.source.replace(/\|[^|]*?$/,"|"+e.end)))};r.inherits(o,s),function(){this.foldingStartMarker=/(\{|\[)[^\}\]]*$|^\s*(\/\*)/,this.foldingStopMarker=/^[^\[\{]*(\}|\])|^[\s\*]*(\*\/)/,this.singleLineBlockCommentRe=/^\s*(\/\*).*\*\/\s*$/,this.tripleStarBlockCommentRe=/^\s*(\/\*\*\*).*\*\/\s*$/,this.startRegionRe=/^\s*(\/\*|\/\/)#region\b/,this._getFoldWidgetBase=this.getFoldWidget,this.getFoldWidget=function(e,t,n){var r=e.getLine(n);if(this.singleLineBlockCommentRe.test(r)&&!this.startRegionRe.test(r)&&!this.tripleStarBlockCommentRe.test(r))return"";var i=this._getFoldWidgetBase(e,t,n);return!i&&this.startRegionRe.test(r)?"start":i},this.getFoldWidgetRange=function(e,t,n,r){var i=e.getLine(n);if(this.startRegionRe.test(i))return this.getCommentRegionBlock(e,i,n);var s=i.match(this.foldingStartMarker);if(s){var o=s.index;if(s[1])return this.openingBracketBlock(e,s[1],n,o);var u=e.getCommentFoldRange(n,o+s[0].length,1);return u&&!u.isMultiLine()&&(r?u=this.getSectionRange(e,n):t!="all"&&(u=null)),u}if(t==="markbegin")return;var s=i.match(this.foldingStopMarker);if(s){var o=s.index+s[0].length;return s[1]?this.closingBracketBlock(e,s[1],n,o):e.getCommentFoldRange(n,o,-1)}},this.getSectionRange=function(e,t){var n=e.getLine(t),r=n.search(/\S/),s=t,o=n.length;t+=1;var u=t,a=e.getLength();while(++t<a){n=e.getLine(t);var f=n.search(/\S/);if(f===-1)continue;if(r>f)break;var l=this.getFoldWidgetRange(e,"all",t);if(l){if(l.start.row<=s)break;if(l.isMultiLine())t=l.end.row;else if(r==f)break}u=t}return new i(s,o,u,e.getLine(u).length)},this.getCommentRegionBlock=function(e,t,n){var r=t.search(/\s*$/),s=e.getLength(),o=n,u=/^\s*(?:\/\*|\/\/)#(end)?region\b/,a=1;while(++n<s){t=e.getLine(n);var f=u.exec(t);if(!f)continue;f[1]?a--:a++;if(!a)break}var l=n;if(l>o)return new i(o,r,l,t.length)}}.call(o.prototype)}),ace.define("ace/mode/javascript",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/javascript_highlight_rules","ace/mode/matching_brace_outdent","ace/range","ace/worker/worker_client","ace/mode/behaviour/cstyle","ace/mode/folding/cstyle"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text").Mode,s=e("./javascript_highlight_rules").JavaScriptHighlightRules,o=e("./matching_brace_outdent").MatchingBraceOutdent,u=e("../range").Range,a=e("../worker/worker_client").WorkerClient,f=e("./behaviour/cstyle").CstyleBehaviour,l=e("./folding/cstyle").FoldMode,c=function(){this.HighlightRules=s,this.$outdent=new o,this.$behaviour=new f,this.foldingRules=new l};r.inherits(c,i),function(){this.lineCommentStart="//",this.blockComment={start:"/*",end:"*/"},this.getNextLineIndent=function(e,t,n){var r=this.$getIndent(t),i=this.getTokenizer().getLineTokens(t,e),s=i.tokens,o=i.state;if(s.length&&s[s.length-1].type=="comment")return r;if(e=="start"||e=="no_regex"){var u=t.match(/^.*(?:\bcase\b.*\:|[\{\(\[])\s*$/);u&&(r+=n)}else if(e=="doc-start"){if(o=="start"||o=="no_regex")return"";var u=t.match(/^\s*(\/?)\*/);u&&(u[1]&&(r+=" "),r+="* ")}return r},this.checkOutdent=function(e,t,n){return this.$outdent.checkOutdent(t,n)},this.autoOutdent=function(e,t,n){this.$outdent.autoOutdent(t,n)},this.createWorker=function(e){var t=new a(["ace"],"ace/mode/javascript_worker","JavaScriptWorker");return t.attachToDocument(e.getDocument()),t.on("jslint",function(t){e.setAnnotations(t.data)}),t.on("terminate",function(){e.clearAnnotations()}),t},this.$id="ace/mode/javascript"}.call(c.prototype),t.Mode=c}),ace.define("ace/mode/java_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/doc_comment_highlight_rules","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./doc_comment_highlight_rules").DocCommentHighlightRules,s=e("./text_highlight_rules").TextHighlightRules,o=function(){var e="abstract|continue|for|new|switch|assert|default|goto|package|synchronized|boolean|do|if|private|this|break|double|implements|protected|throw|byte|else|import|public|throws|case|enum|instanceof|return|transient|catch|extends|int|short|try|char|final|interface|static|void|class|finally|long|strictfp|volatile|const|float|native|super|while",t="null|Infinity|NaN|undefined",n="AbstractMethodError|AssertionError|ClassCircularityError|ClassFormatError|Deprecated|EnumConstantNotPresentException|ExceptionInInitializerError|IllegalAccessError|IllegalThreadStateException|InstantiationError|InternalError|NegativeArraySizeException|NoSuchFieldError|Override|Process|ProcessBuilder|SecurityManager|StringIndexOutOfBoundsException|SuppressWarnings|TypeNotPresentException|UnknownError|UnsatisfiedLinkError|UnsupportedClassVersionError|VerifyError|InstantiationException|IndexOutOfBoundsException|ArrayIndexOutOfBoundsException|CloneNotSupportedException|NoSuchFieldException|IllegalArgumentException|NumberFormatException|SecurityException|Void|InheritableThreadLocal|IllegalStateException|InterruptedException|NoSuchMethodException|IllegalAccessException|UnsupportedOperationException|Enum|StrictMath|Package|Compiler|Readable|Runtime|StringBuilder|Math|IncompatibleClassChangeError|NoSuchMethodError|ThreadLocal|RuntimePermission|ArithmeticException|NullPointerException|Long|Integer|Short|Byte|Double|Number|Float|Character|Boolean|StackTraceElement|Appendable|StringBuffer|Iterable|ThreadGroup|Runnable|Thread|IllegalMonitorStateException|StackOverflowError|OutOfMemoryError|VirtualMachineError|ArrayStoreException|ClassCastException|LinkageError|NoClassDefFoundError|ClassNotFoundException|RuntimeException|Exception|ThreadDeath|Error|Throwable|System|ClassLoader|Cloneable|Class|CharSequence|Comparable|String|Object",r=this.createKeywordMapper({"variable.language":"this",keyword:e,"constant.language":t,"support.function":n},"identifier");this.$rules={start:[{token:"comment",regex:"\\/\\/.*$"},i.getStartRule("doc-start"),{token:"comment",regex:"\\/\\*",next:"comment"},{token:"string",regex:'["](?:(?:\\\\.)|(?:[^"\\\\]))*?["]'},{token:"string",regex:"['](?:(?:\\\\.)|(?:[^'\\\\]))*?[']"},{token:"constant.numeric",regex:"0[xX][0-9a-fA-F]+\\b"},{token:"constant.numeric",regex:"[+-]?\\d+(?:(?:\\.\\d*)?(?:[eE][+-]?\\d+)?)?\\b"},{token:"constant.language.boolean",regex:"(?:true|false)\\b"},{token:r,regex:"[a-zA-Z_$][a-zA-Z0-9_$]*\\b"},{token:"keyword.operator",regex:"!|\\$|%|&|\\*|\\-\\-|\\-|\\+\\+|\\+|~|===|==|=|!=|!==|<=|>=|<<=|>>=|>>>=|<>|<|>|!|&&|\\|\\||\\?\\:|\\*=|%=|\\+=|\\-=|&=|\\^=|\\b(?:in|instanceof|new|delete|typeof|void)"},{token:"lparen",regex:"[[({]"},{token:"rparen",regex:"[\\])}]"},{token:"text",regex:"\\s+"}],comment:[{token:"comment",regex:".*?\\*\\/",next:"start"},{token:"comment",regex:".+"}]},this.embedRules(i,"doc-",[i.getEndRule("start")])};r.inherits(o,s),t.JavaHighlightRules=o}),ace.define("ace/mode/java",["require","exports","module","ace/lib/oop","ace/mode/javascript","ace/mode/java_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./javascript").Mode,s=e("./java_highlight_rules").JavaHighlightRules,o=function(){i.call(this),this.HighlightRules=s};r.inherits(o,i),function(){this.createWorker=function(e){return null},this.$id="ace/mode/java"}.call(o.prototype),t.Mode=o})
\ No newline at end of file
diff --git a/v3/js/ace/src-min-noconflict/mode-javascript.js b/v3/js/ace/src-min-noconflict/mode-javascript.js
new file mode 100644
index 000000000..4696564ed
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/mode-javascript.js
@@ -0,0 +1 @@
+ace.define("ace/mode/doc_comment_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text_highlight_rules").TextHighlightRules,s=function(){this.$rules={start:[{token:"comment.doc.tag",regex:"@[\\w\\d_]+"},s.getTagRule(),{defaultToken:"comment.doc",caseInsensitive:!0}]}};r.inherits(s,i),s.getTagRule=function(e){return{token:"comment.doc.tag.storage.type",regex:"\\b(?:TODO|FIXME|XXX|HACK)\\b"}},s.getStartRule=function(e){return{token:"comment.doc",regex:"\\/\\*(?=\\*)",next:e}},s.getEndRule=function(e){return{token:"comment.doc",regex:"\\*\\/",next:e}},t.DocCommentHighlightRules=s}),ace.define("ace/mode/javascript_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/doc_comment_highlight_rules","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./doc_comment_highlight_rules").DocCommentHighlightRules,s=e("./text_highlight_rules").TextHighlightRules,o=function(e){var t=this.createKeywordMapper({"variable.language":"Array|Boolean|Date|Function|Iterator|Number|Object|RegExp|String|Proxy|Namespace|QName|XML|XMLList|ArrayBuffer|Float32Array|Float64Array|Int16Array|Int32Array|Int8Array|Uint16Array|Uint32Array|Uint8Array|Uint8ClampedArray|Error|EvalError|InternalError|RangeError|ReferenceError|StopIteration|SyntaxError|TypeError|URIError|decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|eval|isFinite|isNaN|parseFloat|parseInt|JSON|Math|this|arguments|prototype|window|document",keyword:"const|yield|import|get|set|break|case|catch|continue|default|delete|do|else|finally|for|function|if|in|instanceof|new|return|switch|throw|try|typeof|let|var|while|with|debugger|__parent__|__count__|escape|unescape|with|__proto__|class|enum|extends|super|export|implements|private|public|interface|package|protected|static","storage.type":"const|let|var|function","constant.language":"null|Infinity|NaN|undefined","support.function":"alert","constant.language.boolean":"true|false"},"identifier"),n="case|do|else|finally|in|instanceof|return|throw|try|typeof|yield|void",r="[a-zA-Z\\$_\u00a1-\uffff][a-zA-Z\\d\\$_\u00a1-\uffff]*\\b",s="\\\\(?:x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4}|[0-2][0-7]{0,2}|3[0-6][0-7]?|37[0-7]?|[4-7][0-7]?|.)";this.$rules={no_regex:[{token:"comment",regex:"\\/\\/",next:"line_comment"},i.getStartRule("doc-start"),{token:"comment",regex:/\/\*/,next:"comment"},{token:"string",regex:"'(?=.)",next:"qstring"},{token:"string",regex:'"(?=.)',next:"qqstring"},{token:"constant.numeric",regex:/0[xX][0-9a-fA-F]+\b/},{token:"constant.numeric",regex:/[+-]?\d+(?:(?:\.\d*)?(?:[eE][+-]?\d+)?)?\b/},{token:["storage.type","punctuation.operator","support.function","punctuation.operator","entity.name.function","text","keyword.operator"],regex:"("+r+")(\\.)(prototype)(\\.)("+r+")(\\s*)(=)",next:"function_arguments"},{token:["storage.type","punctuation.operator","entity.name.function","text","keyword.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\.)("+r+")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["entity.name.function","text","keyword.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["storage.type","punctuation.operator","entity.name.function","text","keyword.operator","text","storage.type","text","entity.name.function","text","paren.lparen"],regex:"("+r+")(\\.)("+r+")(\\s*)(=)(\\s*)(function)(\\s+)(\\w+)(\\s*)(\\()",next:"function_arguments"},{token:["storage.type","text","entity.name.function","text","paren.lparen"],regex:"(function)(\\s+)("+r+")(\\s*)(\\()",next:"function_arguments"},{token:["entity.name.function","text","punctuation.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\s*)(:)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["text","text","storage.type","text","paren.lparen"],regex:"(:)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:"keyword",regex:"(?:"+n+")\\b",next:"start"},{token:["punctuation.operator","support.function"],regex:/(\.)(s(?:h(?:ift|ow(?:Mod(?:elessDialog|alDialog)|Help))|croll(?:X|By(?:Pages|Lines)?|Y|To)?|t(?:op|rike)|i(?:n|zeToContent|debar|gnText)|ort|u(?:p|b(?:str(?:ing)?)?)|pli(?:ce|t)|e(?:nd|t(?:Re(?:sizable|questHeader)|M(?:i(?:nutes|lliseconds)|onth)|Seconds|Ho(?:tKeys|urs)|Year|Cursor|Time(?:out)?|Interval|ZOptions|Date|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Date|FullYear)|FullYear|Active)|arch)|qrt|lice|avePreferences|mall)|h(?:ome|andleEvent)|navigate|c(?:har(?:CodeAt|At)|o(?:s|n(?:cat|textual|firm)|mpile)|eil|lear(?:Timeout|Interval)?|a(?:ptureEvents|ll)|reate(?:StyleSheet|Popup|EventObject))|t(?:o(?:GMTString|S(?:tring|ource)|U(?:TCString|pperCase)|Lo(?:caleString|werCase))|est|a(?:n|int(?:Enabled)?))|i(?:s(?:NaN|Finite)|ndexOf|talics)|d(?:isableExternalCapture|ump|etachEvent)|u(?:n(?:shift|taint|escape|watch)|pdateCommands)|j(?:oin|avaEnabled)|p(?:o(?:p|w)|ush|lugins.refresh|a(?:ddings|rse(?:Int|Float)?)|r(?:int|ompt|eference))|e(?:scape|nableExternalCapture|val|lementFromPoint|x(?:p|ec(?:Script|Command)?))|valueOf|UTC|queryCommand(?:State|Indeterm|Enabled|Value)|f(?:i(?:nd|le(?:ModifiedDate|Size|CreatedDate|UpdatedDate)|xed)|o(?:nt(?:size|color)|rward)|loor|romCharCode)|watch|l(?:ink|o(?:ad|g)|astIndexOf)|a(?:sin|nchor|cos|t(?:tachEvent|ob|an(?:2)?)|pply|lert|b(?:s|ort))|r(?:ou(?:nd|teEvents)|e(?:size(?:By|To)|calc|turnValue|place|verse|l(?:oad|ease(?:Capture|Events)))|andom)|g(?:o|et(?:ResponseHeader|M(?:i(?:nutes|lliseconds)|onth)|Se(?:conds|lection)|Hours|Year|Time(?:zoneOffset)?|Da(?:y|te)|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Da(?:y|te)|FullYear)|FullYear|A(?:ttention|llResponseHeaders)))|m(?:in|ove(?:B(?:y|elow)|To(?:Absolute)?|Above)|ergeAttributes|a(?:tch|rgins|x))|b(?:toa|ig|o(?:ld|rderWidths)|link|ack))\b(?=\()/},{token:["punctuation.operator","support.function.dom"],regex:/(\.)(s(?:ub(?:stringData|mit)|plitText|e(?:t(?:NamedItem|Attribute(?:Node)?)|lect))|has(?:ChildNodes|Feature)|namedItem|c(?:l(?:ick|o(?:se|neNode))|reate(?:C(?:omment|DATASection|aption)|T(?:Head|extNode|Foot)|DocumentFragment|ProcessingInstruction|E(?:ntityReference|lement)|Attribute))|tabIndex|i(?:nsert(?:Row|Before|Cell|Data)|tem)|open|delete(?:Row|C(?:ell|aption)|T(?:Head|Foot)|Data)|focus|write(?:ln)?|a(?:dd|ppend(?:Child|Data))|re(?:set|place(?:Child|Data)|move(?:NamedItem|Child|Attribute(?:Node)?)?)|get(?:NamedItem|Element(?:sBy(?:Name|TagName)|ById)|Attribute(?:Node)?)|blur)\b(?=\()/},{token:["punctuation.operator","support.constant"],regex:/(\.)(s(?:ystemLanguage|cr(?:ipts|ollbars|een(?:X|Y|Top|Left))|t(?:yle(?:Sheets)?|atus(?:Text|bar)?)|ibling(?:Below|Above)|ource|uffixes|e(?:curity(?:Policy)?|l(?:ection|f)))|h(?:istory|ost(?:name)?|as(?:h|Focus))|y|X(?:MLDocument|SLDocument)|n(?:ext|ame(?:space(?:s|URI)|Prop))|M(?:IN_VALUE|AX_VALUE)|c(?:haracterSet|o(?:n(?:structor|trollers)|okieEnabled|lorDepth|mp(?:onents|lete))|urrent|puClass|l(?:i(?:p(?:boardData)?|entInformation)|osed|asses)|alle(?:e|r)|rypto)|t(?:o(?:olbar|p)|ext(?:Transform|Indent|Decoration|Align)|ags)|SQRT(?:1_2|2)|i(?:n(?:ner(?:Height|Width)|put)|ds|gnoreCase)|zIndex|o(?:scpu|n(?:readystatechange|Line)|uter(?:Height|Width)|p(?:sProfile|ener)|ffscreenBuffering)|NEGATIVE_INFINITY|d(?:i(?:splay|alog(?:Height|Top|Width|Left|Arguments)|rectories)|e(?:scription|fault(?:Status|Ch(?:ecked|arset)|View)))|u(?:ser(?:Profile|Language|Agent)|n(?:iqueID|defined)|pdateInterval)|_content|p(?:ixelDepth|ort|ersonalbar|kcs11|l(?:ugins|atform)|a(?:thname|dding(?:Right|Bottom|Top|Left)|rent(?:Window|Layer)?|ge(?:X(?:Offset)?|Y(?:Offset)?))|r(?:o(?:to(?:col|type)|duct(?:Sub)?|mpter)|e(?:vious|fix)))|e(?:n(?:coding|abledPlugin)|x(?:ternal|pando)|mbeds)|v(?:isibility|endor(?:Sub)?|Linkcolor)|URLUnencoded|P(?:I|OSITIVE_INFINITY)|f(?:ilename|o(?:nt(?:Size|Family|Weight)|rmName)|rame(?:s|Element)|gColor)|E|whiteSpace|l(?:i(?:stStyleType|n(?:eHeight|kColor))|o(?:ca(?:tion(?:bar)?|lName)|wsrc)|e(?:ngth|ft(?:Context)?)|a(?:st(?:M(?:odified|atch)|Index|Paren)|yer(?:s|X)|nguage))|a(?:pp(?:MinorVersion|Name|Co(?:deName|re)|Version)|vail(?:Height|Top|Width|Left)|ll|r(?:ity|guments)|Linkcolor|bove)|r(?:ight(?:Context)?|e(?:sponse(?:XML|Text)|adyState))|global|x|m(?:imeTypes|ultiline|enubar|argin(?:Right|Bottom|Top|Left))|L(?:N(?:10|2)|OG(?:10E|2E))|b(?:o(?:ttom|rder(?:Width|RightWidth|BottomWidth|Style|Color|TopWidth|LeftWidth))|ufferDepth|elow|ackground(?:Color|Image)))\b/},{token:["support.constant"],regex:/that\b/},{token:["storage.type","punctuation.operator","support.function.firebug"],regex:/(console)(\.)(warn|info|log|error|time|trace|timeEnd|assert)\b/},{token:t,regex:r},{token:"keyword.operator",regex:/--|\+\+|===|==|=|!=|!==|<=|>=|<<=|>>=|>>>=|<>|<|>|!|&&|\|\||\?\:|[!$%&*+\-~\/^]=?/,next:"start"},{token:"punctuation.operator",regex:/[?:,;.]/,next:"start"},{token:"paren.lparen",regex:/[\[({]/,next:"start"},{token:"paren.rparen",regex:/[\])}]/},{token:"comment",regex:/^#!.*$/}],start:[i.getStartRule("doc-start"),{token:"comment",regex:"\\/\\*",next:"comment_regex_allowed"},{token:"comment",regex:"\\/\\/",next:"line_comment_regex_allowed"},{token:"string.regexp",regex:"\\/",next:"regex"},{token:"text",regex:"\\s+|^$",next:"start"},{token:"empty",regex:"",next:"no_regex"}],regex:[{token:"regexp.keyword.operator",regex:"\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"},{token:"string.regexp",regex:"/[sxngimy]*",next:"no_regex"},{token:"invalid",regex:/\{\d+\b,?\d*\}[+*]|[+*$^?][+*]|[$^][?]|\?{3,}/},{token:"constant.language.escape",regex:/\(\?[:=!]|\)|\{\d+\b,?\d*\}|[+*]\?|[()$^+*?.]/},{token:"constant.language.delimiter",regex:/\|/},{token:"constant.language.escape",regex:/\[\^?/,next:"regex_character_class"},{token:"empty",regex:"$",next:"no_regex"},{defaultToken:"string.regexp"}],regex_character_class:[{token:"regexp.charclass.keyword.operator",regex:"\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"},{token:"constant.language.escape",regex:"]",next:"regex"},{token:"constant.language.escape",regex:"-"},{token:"empty",regex:"$",next:"no_regex"},{defaultToken:"string.regexp.charachterclass"}],function_arguments:[{token:"variable.parameter",regex:r},{token:"punctuation.operator",regex:"[, ]+"},{token:"punctuation.operator",regex:"$"},{token:"empty",regex:"",next:"no_regex"}],comment_regex_allowed:[i.getTagRule(),{token:"comment",regex:"\\*\\/",next:"start"},{defaultToken:"comment",caseInsensitive:!0}],comment:[i.getTagRule(),{token:"comment",regex:"\\*\\/",next:"no_regex"},{defaultToken:"comment",caseInsensitive:!0}],line_comment_regex_allowed:[i.getTagRule(),{token:"comment",regex:"$|^",next:"start"},{defaultToken:"comment",caseInsensitive:!0}],line_comment:[i.getTagRule(),{token:"comment",regex:"$|^",next:"no_regex"},{defaultToken:"comment",caseInsensitive:!0}],qqstring:[{token:"constant.language.escape",regex:s},{token:"string",regex:"\\\\$",next:"qqstring"},{token:"string",regex:'"|$',next:"no_regex"},{defaultToken:"string"}],qstring:[{token:"constant.language.escape",regex:s},{token:"string",regex:"\\\\$",next:"qstring"},{token:"string",regex:"'|$",next:"no_regex"},{defaultToken:"string"}]},(!e||!e.noES6)&&this.$rules.no_regex.unshift({regex:"[{}]",onMatch:function(e,t,n){this.next=e=="{"?this.nextState:"";if(e=="{"&&n.length)return n.unshift("start",t),"paren";if(e=="}"&&n.length){n.shift(),this.next=n.shift();if(this.next.indexOf("string")!=-1)return"paren.quasi.end"}return e=="{"?"paren.lparen":"paren.rparen"},nextState:"start"},{token:"string.quasi.start",regex:/`/,push:[{token:"constant.language.escape",regex:s},{token:"paren.quasi.start",regex:/\${/,push:"start"},{token:"string.quasi.end",regex:/`/,next:"pop"},{defaultToken:"string.quasi"}]}),this.embedRules(i,"doc-",[i.getEndRule("no_regex")]),this.normalizeRules()};r.inherits(o,s),t.JavaScriptHighlightRules=o}),ace.define("ace/mode/matching_brace_outdent",["require","exports","module","ace/range"],function(e,t,n){"use strict";var r=e("../range").Range,i=function(){};(function(){this.checkOutdent=function(e,t){return/^\s+$/.test(e)?/^\s*\}/.test(t):!1},this.autoOutdent=function(e,t){var n=e.getLine(t),i=n.match(/^(\s*\})/);if(!i)return 0;var s=i[1].length,o=e.findMatchingBracket({row:t,column:s});if(!o||o.row==t)return 0;var u=this.$getIndent(e.getLine(o.row));e.replace(new r(t,0,t,s-1),u)},this.$getIndent=function(e){return e.match(/^\s*/)[0]}}).call(i.prototype),t.MatchingBraceOutdent=i}),ace.define("ace/mode/behaviour/cstyle",["require","exports","module","ace/lib/oop","ace/mode/behaviour","ace/token_iterator","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../behaviour").Behaviour,s=e("../../token_iterator").TokenIterator,o=e("../../lib/lang"),u=["text","paren.rparen","punctuation.operator"],a=["text","paren.rparen","punctuation.operator","comment"],f,l={},c=function(e){var t=-1;e.multiSelect&&(t=e.selection.index,l.rangeCount!=e.multiSelect.rangeCount&&(l={rangeCount:e.multiSelect.rangeCount}));if(l[t])return f=l[t];f=l[t]={autoInsertedBrackets:0,autoInsertedRow:-1,autoInsertedLineEnd:"",maybeInsertedBrackets:0,maybeInsertedRow:-1,maybeInsertedLineStart:"",maybeInsertedLineEnd:""}},h=function(){this.add("braces","insertion",function(e,t,n,r,i){var s=n.getCursorPosition(),u=r.doc.getLine(s.row);if(i=="{"){c(n);var a=n.getSelectionRange(),l=r.doc.getTextRange(a);if(l!==""&&l!=="{"&&n.getWrapBehavioursEnabled())return{text:"{"+l+"}",selection:!1};if(h.isSaneInsertion(n,r))return/[\]\}\)]/.test(u[s.column])||n.inMultiSelectMode?(h.recordAutoInsert(n,r,"}"),{text:"{}",selection:[1,1]}):(h.recordMaybeInsert(n,r,"{"),{text:"{",selection:[1,1]})}else if(i=="}"){c(n);var p=u.substring(s.column,s.column+1);if(p=="}"){var d=r.$findOpeningBracket("}",{column:s.column+1,row:s.row});if(d!==null&&h.isAutoInsertedClosing(s,u,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}else{if(i=="\n"||i=="\r\n"){c(n);var v="";h.isMaybeInsertedClosing(s,u)&&(v=o.stringRepeat("}",f.maybeInsertedBrackets),h.clearMaybeInsertedClosing());var p=u.substring(s.column,s.column+1);if(p==="}"){var m=r.findMatchingBracket({row:s.row,column:s.column+1},"}");if(!m)return null;var g=this.$getIndent(r.getLine(m.row))}else{if(!v){h.clearMaybeInsertedClosing();return}var g=this.$getIndent(u)}var y=g+r.getTabString();return{text:"\n"+y+"\n"+g+v,selection:[1,y.length,1,y.length]}}h.clearMaybeInsertedClosing()}}),this.add("braces","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="{"){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.end.column,i.end.column+1);if(u=="}")return i.end.column++,i;f.maybeInsertedBrackets--}}),this.add("parens","insertion",function(e,t,n,r,i){if(i=="("){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return{text:"("+o+")",selection:!1};if(h.isSaneInsertion(n,r))return h.recordAutoInsert(n,r,")"),{text:"()",selection:[1,1]}}else if(i==")"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f==")"){var l=r.$findOpeningBracket(")",{column:u.column+1,row:u.row});if(l!==null&&h.isAutoInsertedClosing(u,a,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("parens","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="("){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==")")return i.end.column++,i}}),this.add("brackets","insertion",function(e,t,n,r,i){if(i=="["){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return{text:"["+o+"]",selection:!1};if(h.isSaneInsertion(n,r))return h.recordAutoInsert(n,r,"]"),{text:"[]",selection:[1,1]}}else if(i=="]"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f=="]"){var l=r.$findOpeningBracket("]",{column:u.column+1,row:u.row});if(l!==null&&h.isAutoInsertedClosing(u,a,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("brackets","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="["){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u=="]")return i.end.column++,i}}),this.add("string_dquotes","insertion",function(e,t,n,r,i){if(i=='"'||i=="'"){c(n);var s=i,o=n.getSelectionRange(),u=r.doc.getTextRange(o);if(u!==""&&u!=="'"&&u!='"'&&n.getWrapBehavioursEnabled())return{text:s+u+s,selection:!1};var a=n.getCursorPosition(),f=r.doc.getLine(a.row),l=f.substring(a.column-1,a.column),h=f.substring(a.column,a.column+1),p=r.getTokenAt(a.row,a.column),d=r.getTokenAt(a.row,a.column+1);if(l=="\\"&&p&&/escape/.test(p.type))return null;var v=p&&/string/.test(p.type),m=!d||/string/.test(d.type),g;if(h==s)g=v!==m;else{if(v&&!m)return null;if(v&&m)return null;var y=r.$mode.tokenRe;y.lastIndex=0;var b=y.test(l);y.lastIndex=0;var w=y.test(l);if(b||w)return null;if(h&&!/[\s;,.})\]\\]/.test(h))return null;g=!0}return{text:g?s+s:"",selection:[1,1]}}}),this.add("string_dquotes","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&(s=='"'||s=="'")){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==s)return i.end.column++,i}})};h.isSaneInsertion=function(e,t){var n=e.getCursorPosition(),r=new s(t,n.row,n.column);if(!this.$matchTokenType(r.getCurrentToken()||"text",u)){var i=new s(t,n.row,n.column+1);if(!this.$matchTokenType(i.getCurrentToken()||"text",u))return!1}return r.stepForward(),r.getCurrentTokenRow()!==n.row||this.$matchTokenType(r.getCurrentToken()||"text",a)},h.$matchTokenType=function(e,t){return t.indexOf(e.type||e)>-1},h.recordAutoInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isAutoInsertedClosing(r,i,f.autoInsertedLineEnd[0])||(f.autoInsertedBrackets=0),f.autoInsertedRow=r.row,f.autoInsertedLineEnd=n+i.substr(r.column),f.autoInsertedBrackets++},h.recordMaybeInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isMaybeInsertedClosing(r,i)||(f.maybeInsertedBrackets=0),f.maybeInsertedRow=r.row,f.maybeInsertedLineStart=i.substr(0,r.column)+n,f.maybeInsertedLineEnd=i.substr(r.column),f.maybeInsertedBrackets++},h.isAutoInsertedClosing=function(e,t,n){return f.autoInsertedBrackets>0&&e.row===f.autoInsertedRow&&n===f.autoInsertedLineEnd[0]&&t.substr(e.column)===f.autoInsertedLineEnd},h.isMaybeInsertedClosing=function(e,t){return f.maybeInsertedBrackets>0&&e.row===f.maybeInsertedRow&&t.substr(e.column)===f.maybeInsertedLineEnd&&t.substr(0,e.column)==f.maybeInsertedLineStart},h.popAutoInsertedClosing=function(){f.autoInsertedLineEnd=f.autoInsertedLineEnd.substr(1),f.autoInsertedBrackets--},h.clearMaybeInsertedClosing=function(){f&&(f.maybeInsertedBrackets=0,f.maybeInsertedRow=-1)},r.inherits(h,i),t.CstyleBehaviour=h}),ace.define("ace/mode/folding/cstyle",["require","exports","module","ace/lib/oop","ace/range","ace/mode/folding/fold_mode"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../../range").Range,s=e("./fold_mode").FoldMode,o=t.FoldMode=function(e){e&&(this.foldingStartMarker=new RegExp(this.foldingStartMarker.source.replace(/\|[^|]*?$/,"|"+e.start)),this.foldingStopMarker=new RegExp(this.foldingStopMarker.source.replace(/\|[^|]*?$/,"|"+e.end)))};r.inherits(o,s),function(){this.foldingStartMarker=/(\{|\[)[^\}\]]*$|^\s*(\/\*)/,this.foldingStopMarker=/^[^\[\{]*(\}|\])|^[\s\*]*(\*\/)/,this.singleLineBlockCommentRe=/^\s*(\/\*).*\*\/\s*$/,this.tripleStarBlockCommentRe=/^\s*(\/\*\*\*).*\*\/\s*$/,this.startRegionRe=/^\s*(\/\*|\/\/)#region\b/,this._getFoldWidgetBase=this.getFoldWidget,this.getFoldWidget=function(e,t,n){var r=e.getLine(n);if(this.singleLineBlockCommentRe.test(r)&&!this.startRegionRe.test(r)&&!this.tripleStarBlockCommentRe.test(r))return"";var i=this._getFoldWidgetBase(e,t,n);return!i&&this.startRegionRe.test(r)?"start":i},this.getFoldWidgetRange=function(e,t,n,r){var i=e.getLine(n);if(this.startRegionRe.test(i))return this.getCommentRegionBlock(e,i,n);var s=i.match(this.foldingStartMarker);if(s){var o=s.index;if(s[1])return this.openingBracketBlock(e,s[1],n,o);var u=e.getCommentFoldRange(n,o+s[0].length,1);return u&&!u.isMultiLine()&&(r?u=this.getSectionRange(e,n):t!="all"&&(u=null)),u}if(t==="markbegin")return;var s=i.match(this.foldingStopMarker);if(s){var o=s.index+s[0].length;return s[1]?this.closingBracketBlock(e,s[1],n,o):e.getCommentFoldRange(n,o,-1)}},this.getSectionRange=function(e,t){var n=e.getLine(t),r=n.search(/\S/),s=t,o=n.length;t+=1;var u=t,a=e.getLength();while(++t<a){n=e.getLine(t);var f=n.search(/\S/);if(f===-1)continue;if(r>f)break;var l=this.getFoldWidgetRange(e,"all",t);if(l){if(l.start.row<=s)break;if(l.isMultiLine())t=l.end.row;else if(r==f)break}u=t}return new i(s,o,u,e.getLine(u).length)},this.getCommentRegionBlock=function(e,t,n){var r=t.search(/\s*$/),s=e.getLength(),o=n,u=/^\s*(?:\/\*|\/\/)#(end)?region\b/,a=1;while(++n<s){t=e.getLine(n);var f=u.exec(t);if(!f)continue;f[1]?a--:a++;if(!a)break}var l=n;if(l>o)return new i(o,r,l,t.length)}}.call(o.prototype)}),ace.define("ace/mode/javascript",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/javascript_highlight_rules","ace/mode/matching_brace_outdent","ace/range","ace/worker/worker_client","ace/mode/behaviour/cstyle","ace/mode/folding/cstyle"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text").Mode,s=e("./javascript_highlight_rules").JavaScriptHighlightRules,o=e("./matching_brace_outdent").MatchingBraceOutdent,u=e("../range").Range,a=e("../worker/worker_client").WorkerClient,f=e("./behaviour/cstyle").CstyleBehaviour,l=e("./folding/cstyle").FoldMode,c=function(){this.HighlightRules=s,this.$outdent=new o,this.$behaviour=new f,this.foldingRules=new l};r.inherits(c,i),function(){this.lineCommentStart="//",this.blockComment={start:"/*",end:"*/"},this.getNextLineIndent=function(e,t,n){var r=this.$getIndent(t),i=this.getTokenizer().getLineTokens(t,e),s=i.tokens,o=i.state;if(s.length&&s[s.length-1].type=="comment")return r;if(e=="start"||e=="no_regex"){var u=t.match(/^.*(?:\bcase\b.*\:|[\{\(\[])\s*$/);u&&(r+=n)}else if(e=="doc-start"){if(o=="start"||o=="no_regex")return"";var u=t.match(/^\s*(\/?)\*/);u&&(u[1]&&(r+=" "),r+="* ")}return r},this.checkOutdent=function(e,t,n){return this.$outdent.checkOutdent(t,n)},this.autoOutdent=function(e,t,n){this.$outdent.autoOutdent(t,n)},this.createWorker=function(e){var t=new a(["ace"],"ace/mode/javascript_worker","JavaScriptWorker");return t.attachToDocument(e.getDocument()),t.on("jslint",function(t){e.setAnnotations(t.data)}),t.on("terminate",function(){e.clearAnnotations()}),t},this.$id="ace/mode/javascript"}.call(c.prototype),t.Mode=c})
\ No newline at end of file
diff --git a/v3/js/ace/src-min-noconflict/mode-python.js b/v3/js/ace/src-min-noconflict/mode-python.js
new file mode 100644
index 000000000..f80eb0e8a
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/mode-python.js
@@ -0,0 +1 @@
+ace.define("ace/mode/python_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text_highlight_rules").TextHighlightRules,s=function(){var e="and|as|assert|break|class|continue|def|del|elif|else|except|exec|finally|for|from|global|if|import|in|is|lambda|not|or|pass|print|raise|return|try|while|with|yield",t="True|False|None|NotImplemented|Ellipsis|__debug__",n="abs|divmod|input|open|staticmethod|all|enumerate|int|ord|str|any|eval|isinstance|pow|sum|basestring|execfile|issubclass|print|super|binfile|iter|property|tuple|bool|filter|len|range|type|bytearray|float|list|raw_input|unichr|callable|format|locals|reduce|unicode|chr|frozenset|long|reload|vars|classmethod|getattr|map|repr|xrange|cmp|globals|max|reversed|zip|compile|hasattr|memoryview|round|__import__|complex|hash|min|set|apply|delattr|help|next|setattr|buffer|dict|hex|object|slice|coerce|dir|id|oct|sorted|intern",r=this.createKeywordMapper({"invalid.deprecated":"debugger","support.function":n,"constant.language":t,keyword:e},"identifier"),i="(?:r|u|ur|R|U|UR|Ur|uR)?",s="(?:(?:[1-9]\\d*)|(?:0))",o="(?:0[oO]?[0-7]+)",u="(?:0[xX][\\dA-Fa-f]+)",a="(?:0[bB][01]+)",f="(?:"+s+"|"+o+"|"+u+"|"+a+")",l="(?:[eE][+-]?\\d+)",c="(?:\\.\\d+)",h="(?:\\d+)",p="(?:(?:"+h+"?"+c+")|(?:"+h+"\\.))",d="(?:(?:"+p+"|"+h+")"+l+")",v="(?:"+d+"|"+p+")",m="\\\\(x[0-9A-Fa-f]{2}|[0-7]{3}|[\\\\abfnrtv'\"]|U[0-9A-Fa-f]{8}|u[0-9A-Fa-f]{4})";this.$rules={start:[{token:"comment",regex:"#.*$"},{token:"string",regex:i+'"{3}',next:"qqstring3"},{token:"string",regex:i+'"(?=.)',next:"qqstring"},{token:"string",regex:i+"'{3}",next:"qstring3"},{token:"string",regex:i+"'(?=.)",next:"qstring"},{token:"constant.numeric",regex:"(?:"+v+"|\\d+)[jJ]\\b"},{token:"constant.numeric",regex:v},{token:"constant.numeric",regex:f+"[lL]\\b"},{token:"constant.numeric",regex:f+"\\b"},{token:r,regex:"[a-zA-Z_$][a-zA-Z0-9_$]*\\b"},{token:"keyword.operator",regex:"\\+|\\-|\\*|\\*\\*|\\/|\\/\\/|%|<<|>>|&|\\||\\^|~|<|>|<=|=>|==|!=|<>|="},{token:"paren.lparen",regex:"[\\[\\(\\{]"},{token:"paren.rparen",regex:"[\\]\\)\\}]"},{token:"text",regex:"\\s+"}],qqstring3:[{token:"constant.language.escape",regex:m},{token:"string",regex:'"{3}',next:"start"},{defaultToken:"string"}],qstring3:[{token:"constant.language.escape",regex:m},{token:"string",regex:"'{3}",next:"start"},{defaultToken:"string"}],qqstring:[{token:"constant.language.escape",regex:m},{token:"string",regex:"\\\\$",next:"qqstring"},{token:"string",regex:'"|$',next:"start"},{defaultToken:"string"}],qstring:[{token:"constant.language.escape",regex:m},{token:"string",regex:"\\\\$",next:"qstring"},{token:"string",regex:"'|$",next:"start"},{defaultToken:"string"}]}};r.inherits(s,i),t.PythonHighlightRules=s}),ace.define("ace/mode/folding/pythonic",["require","exports","module","ace/lib/oop","ace/mode/folding/fold_mode"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("./fold_mode").FoldMode,s=t.FoldMode=function(e){this.foldingStartMarker=new RegExp("([\\[{])(?:\\s*)$|("+e+")(?:\\s*)(?:#.*)?$")};r.inherits(s,i),function(){this.getFoldWidgetRange=function(e,t,n){var r=e.getLine(n),i=r.match(this.foldingStartMarker);if(i)return i[1]?this.openingBracketBlock(e,i[1],n,i.index):i[2]?this.indentationBlock(e,n,i.index+i[2].length):this.indentationBlock(e,n)}}.call(s.prototype)}),ace.define("ace/mode/python",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/python_highlight_rules","ace/mode/folding/pythonic","ace/range"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text").Mode,s=e("./python_highlight_rules").PythonHighlightRules,o=e("./folding/pythonic").FoldMode,u=e("../range").Range,a=function(){this.HighlightRules=s,this.foldingRules=new o("\\:")};r.inherits(a,i),function(){this.lineCommentStart="#",this.getNextLineIndent=function(e,t,n){var r=this.$getIndent(t),i=this.getTokenizer().getLineTokens(t,e),s=i.tokens;if(s.length&&s[s.length-1].type=="comment")return r;if(e=="start"){var o=t.match(/^.*[\{\(\[\:]\s*$/);o&&(r+=n)}return r};var e={pass:1,"return":1,raise:1,"break":1,"continue":1};this.checkOutdent=function(t,n,r){if(r!=="\r\n"&&r!=="\r"&&r!=="\n")return!1;var i=this.getTokenizer().getLineTokens(n.trim(),t).tokens;if(!i)return!1;do var s=i.pop();while(s&&(s.type=="comment"||s.type=="text"&&s.value.match(/^\s+$/)));return s?s.type=="keyword"&&e[s.value]:!1},this.autoOutdent=function(e,t,n){n+=1;var r=this.$getIndent(t.getLine(n)),i=t.getTabString();r.slice(-i.length)==i&&t.remove(new u(n,r.length-i.length,n,r.length))},this.$id="ace/mode/python"}.call(a.prototype),t.Mode=a})
\ No newline at end of file
diff --git a/v3/js/ace/src-min-noconflict/mode-ruby.js b/v3/js/ace/src-min-noconflict/mode-ruby.js
new file mode 100644
index 000000000..b20cdc957
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/mode-ruby.js
@@ -0,0 +1 @@
+ace.define("ace/mode/ruby_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text_highlight_rules").TextHighlightRules,s=t.constantOtherSymbol={token:"constant.other.symbol.ruby",regex:"[:](?:[A-Za-z_]|[@$](?=[a-zA-Z0-9_]))[a-zA-Z0-9_]*[!=?]?"},o=t.qString={token:"string",regex:"['](?:(?:\\\\.)|(?:[^'\\\\]))*?[']"},u=t.qqString={token:"string",regex:'["](?:(?:\\\\.)|(?:[^"\\\\]))*?["]'},a=t.tString={token:"string",regex:"[`](?:(?:\\\\.)|(?:[^'\\\\]))*?[`]"},f=t.constantNumericHex={token:"constant.numeric",regex:"0[xX][0-9a-fA-F](?:[0-9a-fA-F]|_(?=[0-9a-fA-F]))*\\b"},l=t.constantNumericFloat={token:"constant.numeric",regex:"[+-]?\\d(?:\\d|_(?=\\d))*(?:(?:\\.\\d(?:\\d|_(?=\\d))*)?(?:[eE][+-]?\\d+)?)?\\b"},c=function(){var e="abort|Array|assert|assert_equal|assert_not_equal|assert_same|assert_not_same|assert_nil|assert_not_nil|assert_match|assert_no_match|assert_in_delta|assert_throws|assert_raise|assert_nothing_raised|assert_instance_of|assert_kind_of|assert_respond_to|assert_operator|assert_send|assert_difference|assert_no_difference|assert_recognizes|assert_generates|assert_response|assert_redirected_to|assert_template|assert_select|assert_select_email|assert_select_rjs|assert_select_encoded|css_select|at_exit|attr|attr_writer|attr_reader|attr_accessor|attr_accessible|autoload|binding|block_given?|callcc|caller|catch|chomp|chomp!|chop|chop!|defined?|delete_via_redirect|eval|exec|exit|exit!|fail|Float|flunk|follow_redirect!|fork|form_for|form_tag|format|gets|global_variables|gsub|gsub!|get_via_redirect|host!|https?|https!|include|Integer|lambda|link_to|link_to_unless_current|link_to_function|link_to_remote|load|local_variables|loop|open|open_session|p|print|printf|proc|putc|puts|post_via_redirect|put_via_redirect|raise|rand|raw|readline|readlines|redirect?|request_via_redirect|require|scan|select|set_trace_func|sleep|split|sprintf|srand|String|stylesheet_link_tag|syscall|system|sub|sub!|test|throw|trace_var|trap|untrace_var|atan2|cos|exp|frexp|ldexp|log|log10|sin|sqrt|tan|render|javascript_include_tag|csrf_meta_tag|label_tag|text_field_tag|submit_tag|check_box_tag|content_tag|radio_button_tag|text_area_tag|password_field_tag|hidden_field_tag|fields_for|select_tag|options_for_select|options_from_collection_for_select|collection_select|time_zone_select|select_date|select_time|select_datetime|date_select|time_select|datetime_select|select_year|select_month|select_day|select_hour|select_minute|select_second|file_field_tag|file_field|respond_to|skip_before_filter|around_filter|after_filter|verify|protect_from_forgery|rescue_from|helper_method|redirect_to|before_filter|send_data|send_file|validates_presence_of|validates_uniqueness_of|validates_length_of|validates_format_of|validates_acceptance_of|validates_associated|validates_exclusion_of|validates_inclusion_of|validates_numericality_of|validates_with|validates_each|authenticate_or_request_with_http_basic|authenticate_or_request_with_http_digest|filter_parameter_logging|match|get|post|resources|redirect|scope|assert_routing|translate|localize|extract_locale_from_tld|caches_page|expire_page|caches_action|expire_action|cache|expire_fragment|expire_cache_for|observe|cache_sweeper|has_many|has_one|belongs_to|has_and_belongs_to_many",t="alias|and|BEGIN|begin|break|case|class|def|defined|do|else|elsif|END|end|ensure|__FILE__|finally|for|gem|if|in|__LINE__|module|next|not|or|private|protected|public|redo|rescue|retry|return|super|then|undef|unless|until|when|while|yield",n="true|TRUE|false|FALSE|nil|NIL|ARGF|ARGV|DATA|ENV|RUBY_PLATFORM|RUBY_RELEASE_DATE|RUBY_VERSION|STDERR|STDIN|STDOUT|TOPLEVEL_BINDING",r="$DEBUG|$defout|$FILENAME|$LOAD_PATH|$SAFE|$stdin|$stdout|$stderr|$VERBOSE|$!|root_url|flash|session|cookies|params|request|response|logger|self",i=this.$keywords=this.createKeywordMapper({keyword:t,"constant.language":n,"variable.language":r,"support.function":e,"invalid.deprecated":"debugger"},"identifier");this.$rules={start:[{token:"comment",regex:"#.*$"},{token:"comment",regex:"^=begin(?:$|\\s.*$)",next:"comment"},{token:"string.regexp",regex:"[/](?:(?:\\[(?:\\\\]|[^\\]])+\\])|(?:\\\\/|[^\\]/]))*[/]\\w*\\s*(?=[).,;]|$)"},[{regex:"[{}]",onMatch:function(e,t,n){this.next=e=="{"?this.nextState:"";if(e=="{"&&n.length)return n.unshift("start",t),"paren.lparen";if(e=="}"&&n.length){n.shift(),this.next=n.shift();if(this.next.indexOf("string")!=-1)return"paren.end"}return e=="{"?"paren.lparen":"paren.rparen"},nextState:"start"},{token:"string.start",regex:/"/,push:[{token:"constant.language.escape",regex:/\\(?:[nsrtvfbae'"\\]|c.|C-.|M-.(?:\\C-.)?|[0-7]{3}|x[\da-fA-F]{2}|u[\da-fA-F]{4})/},{token:"paren.start",regex:/\#{/,push:"start"},{token:"string.end",regex:/"/,next:"pop"},{defaultToken:"string"}]},{token:"string.start",regex:/`/,push:[{token:"constant.language.escape",regex:/\\(?:[nsrtvfbae'"\\]|c.|C-.|M-.(?:\\C-.)?|[0-7]{3}|x[\da-fA-F]{2}|u[\da-fA-F]{4})/},{token:"paren.start",regex:/\#{/,push:"start"},{token:"string.end",regex:/`/,next:"pop"},{defaultToken:"string"}]},{token:"string.start",regex:/'/,push:[{token:"constant.language.escape",regex:/\\['\\]/},{token:"string.end",regex:/'/,next:"pop"},{defaultToken:"string"}]}],{token:"text",regex:"::"},{token:"variable.instance",regex:"@{1,2}[a-zA-Z_\\d]+"},{token:"support.class",regex:"[A-Z][a-zA-Z_\\d]+"},s,f,l,{token:"constant.language.boolean",regex:"(?:true|false)\\b"},{token:i,regex:"[a-zA-Z_$][a-zA-Z0-9_$]*\\b"},{token:"punctuation.separator.key-value",regex:"=>"},{stateName:"heredoc",onMatch:function(e,t,n){var r=e[2]=="-"?"indentedHeredoc":"heredoc",i=e.split(this.splitRegex);return n.push(r,i[3]),[{type:"constant",value:i[1]},{type:"string",value:i[2]},{type:"support.class",value:i[3]},{type:"string",value:i[4]}]},regex:"(<<-?)(['\"`]?)([\\w]+)(['\"`]?)",rules:{heredoc:[{onMatch:function(e,t,n){return e===n[1]?(n.shift(),n.shift(),this.next=n[0]||"start","support.class"):(this.next="","string")},regex:".*$",next:"start"}],indentedHeredoc:[{token:"string",regex:"^ +"},{onMatch:function(e,t,n){return e===n[1]?(n.shift(),n.shift(),this.next=n[0]||"start","support.class"):(this.next="","string")},regex:".*$",next:"start"}]}},{regex:"$",token:"empty",next:function(e,t){return t[0]==="heredoc"||t[0]==="indentedHeredoc"?t[0]:e}},{token:"string.character",regex:"\\B\\?."},{token:"keyword.operator",regex:"!|\\$|%|&|\\*|\\-\\-|\\-|\\+\\+|\\+|~|===|==|=|!=|!==|<=|>=|<<=|>>=|>>>=|<>|<|>|!|&&|\\|\\||\\?\\:|\\*=|%=|\\+=|\\-=|&=|\\^=|\\b(?:in|instanceof|new|delete|typeof|void)"},{token:"paren.lparen",regex:"[[({]"},{token:"paren.rparen",regex:"[\\])}]"},{token:"text",regex:"\\s+"}],comment:[{token:"comment",regex:"^=end(?:$|\\s.*$)",next:"start"},{token:"comment",regex:".+"}]},this.normalizeRules()};r.inherits(c,i),t.RubyHighlightRules=c}),ace.define("ace/mode/matching_brace_outdent",["require","exports","module","ace/range"],function(e,t,n){"use strict";var r=e("../range").Range,i=function(){};(function(){this.checkOutdent=function(e,t){return/^\s+$/.test(e)?/^\s*\}/.test(t):!1},this.autoOutdent=function(e,t){var n=e.getLine(t),i=n.match(/^(\s*\})/);if(!i)return 0;var s=i[1].length,o=e.findMatchingBracket({row:t,column:s});if(!o||o.row==t)return 0;var u=this.$getIndent(e.getLine(o.row));e.replace(new r(t,0,t,s-1),u)},this.$getIndent=function(e){return e.match(/^\s*/)[0]}}).call(i.prototype),t.MatchingBraceOutdent=i}),ace.define("ace/mode/behaviour/cstyle",["require","exports","module","ace/lib/oop","ace/mode/behaviour","ace/token_iterator","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../behaviour").Behaviour,s=e("../../token_iterator").TokenIterator,o=e("../../lib/lang"),u=["text","paren.rparen","punctuation.operator"],a=["text","paren.rparen","punctuation.operator","comment"],f,l={},c=function(e){var t=-1;e.multiSelect&&(t=e.selection.index,l.rangeCount!=e.multiSelect.rangeCount&&(l={rangeCount:e.multiSelect.rangeCount}));if(l[t])return f=l[t];f=l[t]={autoInsertedBrackets:0,autoInsertedRow:-1,autoInsertedLineEnd:"",maybeInsertedBrackets:0,maybeInsertedRow:-1,maybeInsertedLineStart:"",maybeInsertedLineEnd:""}},h=function(e,t,n,r){var i=e.end.row-e.start.row;return{text:n+t+r,selection:[0,e.start.column+1,i,e.end.column+(i?0:1)]}},p=function(){this.add("braces","insertion",function(e,t,n,r,i){var s=n.getCursorPosition(),u=r.doc.getLine(s.row);if(i=="{"){c(n);var a=n.getSelectionRange(),l=r.doc.getTextRange(a);if(l!==""&&l!=="{"&&n.getWrapBehavioursEnabled())return h(a,l,"{","}");if(p.isSaneInsertion(n,r))return/[\]\}\)]/.test(u[s.column])||n.inMultiSelectMode?(p.recordAutoInsert(n,r,"}"),{text:"{}",selection:[1,1]}):(p.recordMaybeInsert(n,r,"{"),{text:"{",selection:[1,1]})}else if(i=="}"){c(n);var d=u.substring(s.column,s.column+1);if(d=="}"){var v=r.$findOpeningBracket("}",{column:s.column+1,row:s.row});if(v!==null&&p.isAutoInsertedClosing(s,u,i))return p.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}else{if(i=="\n"||i=="\r\n"){c(n);var m="";p.isMaybeInsertedClosing(s,u)&&(m=o.stringRepeat("}",f.maybeInsertedBrackets),p.clearMaybeInsertedClosing());var d=u.substring(s.column,s.column+1);if(d==="}"){var g=r.findMatchingBracket({row:s.row,column:s.column+1},"}");if(!g)return null;var y=this.$getIndent(r.getLine(g.row))}else{if(!m){p.clearMaybeInsertedClosing();return}var y=this.$getIndent(u)}var b=y+r.getTabString();return{text:"\n"+b+"\n"+y+m,selection:[1,b.length,1,b.length]}}p.clearMaybeInsertedClosing()}}),this.add("braces","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="{"){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.end.column,i.end.column+1);if(u=="}")return i.end.column++,i;f.maybeInsertedBrackets--}}),this.add("parens","insertion",function(e,t,n,r,i){if(i=="("){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return h(s,o,"(",")");if(p.isSaneInsertion(n,r))return p.recordAutoInsert(n,r,")"),{text:"()",selection:[1,1]}}else if(i==")"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f==")"){var l=r.$findOpeningBracket(")",{column:u.column+1,row:u.row});if(l!==null&&p.isAutoInsertedClosing(u,a,i))return p.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("parens","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="("){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==")")return i.end.column++,i}}),this.add("brackets","insertion",function(e,t,n,r,i){if(i=="["){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return h(s,o,"[","]");if(p.isSaneInsertion(n,r))return p.recordAutoInsert(n,r,"]"),{text:"[]",selection:[1,1]}}else if(i=="]"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f=="]"){var l=r.$findOpeningBracket("]",{column:u.column+1,row:u.row});if(l!==null&&p.isAutoInsertedClosing(u,a,i))return p.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("brackets","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="["){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u=="]")return i.end.column++,i}}),this.add("string_dquotes","insertion",function(e,t,n,r,i){if(i=='"'||i=="'"){c(n);var s=i,o=n.getSelectionRange(),u=r.doc.getTextRange(o);if(u!==""&&u!=="'"&&u!='"'&&n.getWrapBehavioursEnabled())return h(o,u,s,s);if(!u){var a=n.getCursorPosition(),f=r.doc.getLine(a.row),l=f.substring(a.column-1,a.column),p=f.substring(a.column,a.column+1),d=r.getTokenAt(a.row,a.column),v=r.getTokenAt(a.row,a.column+1);if(l=="\\"&&d&&/escape/.test(d.type))return null;var m=d&&/string|escape/.test(d.type),g=!v||/string|escape/.test(v.type),y;if(p==s)y=m!==g;else{if(m&&!g)return null;if(m&&g)return null;var b=r.$mode.tokenRe;b.lastIndex=0;var w=b.test(l);b.lastIndex=0;var E=b.test(l);if(w||E)return null;if(p&&!/[\s;,.})\]\\]/.test(p))return null;y=!0}return{text:y?s+s:"",selection:[1,1]}}}}),this.add("string_dquotes","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&(s=='"'||s=="'")){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==s)return i.end.column++,i}})};p.isSaneInsertion=function(e,t){var n=e.getCursorPosition(),r=new s(t,n.row,n.column);if(!this.$matchTokenType(r.getCurrentToken()||"text",u)){var i=new s(t,n.row,n.column+1);if(!this.$matchTokenType(i.getCurrentToken()||"text",u))return!1}return r.stepForward(),r.getCurrentTokenRow()!==n.row||this.$matchTokenType(r.getCurrentToken()||"text",a)},p.$matchTokenType=function(e,t){return t.indexOf(e.type||e)>-1},p.recordAutoInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isAutoInsertedClosing(r,i,f.autoInsertedLineEnd[0])||(f.autoInsertedBrackets=0),f.autoInsertedRow=r.row,f.autoInsertedLineEnd=n+i.substr(r.column),f.autoInsertedBrackets++},p.recordMaybeInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isMaybeInsertedClosing(r,i)||(f.maybeInsertedBrackets=0),f.maybeInsertedRow=r.row,f.maybeInsertedLineStart=i.substr(0,r.column)+n,f.maybeInsertedLineEnd=i.substr(r.column),f.maybeInsertedBrackets++},p.isAutoInsertedClosing=function(e,t,n){return f.autoInsertedBrackets>0&&e.row===f.autoInsertedRow&&n===f.autoInsertedLineEnd[0]&&t.substr(e.column)===f.autoInsertedLineEnd},p.isMaybeInsertedClosing=function(e,t){return f.maybeInsertedBrackets>0&&e.row===f.maybeInsertedRow&&t.substr(e.column)===f.maybeInsertedLineEnd&&t.substr(0,e.column)==f.maybeInsertedLineStart},p.popAutoInsertedClosing=function(){f.autoInsertedLineEnd=f.autoInsertedLineEnd.substr(1),f.autoInsertedBrackets--},p.clearMaybeInsertedClosing=function(){f&&(f.maybeInsertedBrackets=0,f.maybeInsertedRow=-1)},r.inherits(p,i),t.CstyleBehaviour=p}),ace.define("ace/mode/folding/coffee",["require","exports","module","ace/lib/oop","ace/mode/folding/fold_mode","ace/range"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("./fold_mode").FoldMode,s=e("../../range").Range,o=t.FoldMode=function(){};r.inherits(o,i),function(){this.getFoldWidgetRange=function(e,t,n){var r=this.indentationBlock(e,n);if(r)return r;var i=/\S/,o=e.getLine(n),u=o.search(i);if(u==-1||o[u]!="#")return;var a=o.length,f=e.getLength(),l=n,c=n;while(++n<f){o=e.getLine(n);var h=o.search(i);if(h==-1)continue;if(o[h]!="#")break;c=n}if(c>l){var p=e.getLine(c).length;return new s(l,a,c,p)}},this.getFoldWidget=function(e,t,n){var r=e.getLine(n),i=r.search(/\S/),s=e.getLine(n+1),o=e.getLine(n-1),u=o.search(/\S/),a=s.search(/\S/);if(i==-1)return e.foldWidgets[n-1]=u!=-1&&u<a?"start":"","";if(u==-1){if(i==a&&r[i]=="#"&&s[i]=="#")return e.foldWidgets[n-1]="",e.foldWidgets[n+1]="","start"}else if(u==i&&r[i]=="#"&&o[i]=="#"&&e.getLine(n-2).search(/\S/)==-1)return e.foldWidgets[n-1]="start",e.foldWidgets[n+1]="","";return u!=-1&&u<i?e.foldWidgets[n-1]="start":e.foldWidgets[n-1]="",i<a?"start":""}}.call(o.prototype)}),ace.define("ace/mode/ruby",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/ruby_highlight_rules","ace/mode/matching_brace_outdent","ace/range","ace/mode/behaviour/cstyle","ace/mode/folding/coffee"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text").Mode,s=e("./ruby_highlight_rules").RubyHighlightRules,o=e("./matching_brace_outdent").MatchingBraceOutdent,u=e("../range").Range,a=e("./behaviour/cstyle").CstyleBehaviour,f=e("./folding/coffee").FoldMode,l=function(){this.HighlightRules=s,this.$outdent=new o,this.$behaviour=new a,this.foldingRules=new f};r.inherits(l,i),function(){this.lineCommentStart="#",this.getNextLineIndent=function(e,t,n){var r=this.$getIndent(t),i=this.getTokenizer().getLineTokens(t,e),s=i.tokens;if(s.length&&s[s.length-1].type=="comment")return r;if(e=="start"){var o=t.match(/^.*[\{\(\[]\s*$/),u=t.match(/^\s*(class|def|module)\s.*$/),a=t.match(/.*do(\s*|\s+\|.*\|\s*)$/),f=t.match(/^\s*(if|else)\s*/);if(o||u||a||f)r+=n}return r},this.checkOutdent=function(e,t,n){return/^\s+(end|else)$/.test(t+n)||this.$outdent.checkOutdent(t,n)},this.autoOutdent=function(e,t,n){var r=t.getLine(n);if(/}/.test(r))return this.$outdent.autoOutdent(t,n);var i=this.$getIndent(r),s=t.getLine(n-1),o=this.$getIndent(s),a=t.getTabString();o.length<=i.length&&i.slice(-a.length)==a&&t.remove(new u(n,i.length-a.length,n,i.length))},this.$id="ace/mode/ruby"}.call(l.prototype),t.Mode=l})
\ No newline at end of file
diff --git a/v3/js/ace/src-min-noconflict/mode-typescript.js b/v3/js/ace/src-min-noconflict/mode-typescript.js
new file mode 100644
index 000000000..d9887080c
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/mode-typescript.js
@@ -0,0 +1 @@
+ace.define("ace/mode/doc_comment_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text_highlight_rules").TextHighlightRules,s=function(){this.$rules={start:[{token:"comment.doc.tag",regex:"@[\\w\\d_]+"},s.getTagRule(),{defaultToken:"comment.doc",caseInsensitive:!0}]}};r.inherits(s,i),s.getTagRule=function(e){return{token:"comment.doc.tag.storage.type",regex:"\\b(?:TODO|FIXME|XXX|HACK)\\b"}},s.getStartRule=function(e){return{token:"comment.doc",regex:"\\/\\*(?=\\*)",next:e}},s.getEndRule=function(e){return{token:"comment.doc",regex:"\\*\\/",next:e}},t.DocCommentHighlightRules=s}),ace.define("ace/mode/javascript_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/doc_comment_highlight_rules","ace/mode/text_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./doc_comment_highlight_rules").DocCommentHighlightRules,s=e("./text_highlight_rules").TextHighlightRules,o=function(e){var t=this.createKeywordMapper({"variable.language":"Array|Boolean|Date|Function|Iterator|Number|Object|RegExp|String|Proxy|Namespace|QName|XML|XMLList|ArrayBuffer|Float32Array|Float64Array|Int16Array|Int32Array|Int8Array|Uint16Array|Uint32Array|Uint8Array|Uint8ClampedArray|Error|EvalError|InternalError|RangeError|ReferenceError|StopIteration|SyntaxError|TypeError|URIError|decodeURI|decodeURIComponent|encodeURI|encodeURIComponent|eval|isFinite|isNaN|parseFloat|parseInt|JSON|Math|this|arguments|prototype|window|document",keyword:"const|yield|import|get|set|break|case|catch|continue|default|delete|do|else|finally|for|function|if|in|instanceof|new|return|switch|throw|try|typeof|let|var|while|with|debugger|__parent__|__count__|escape|unescape|with|__proto__|class|enum|extends|super|export|implements|private|public|interface|package|protected|static","storage.type":"const|let|var|function","constant.language":"null|Infinity|NaN|undefined","support.function":"alert","constant.language.boolean":"true|false"},"identifier"),n="case|do|else|finally|in|instanceof|return|throw|try|typeof|yield|void",r="[a-zA-Z\\$_\u00a1-\uffff][a-zA-Z\\d\\$_\u00a1-\uffff]*\\b",s="\\\\(?:x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4}|[0-2][0-7]{0,2}|3[0-6][0-7]?|37[0-7]?|[4-7][0-7]?|.)";this.$rules={no_regex:[{token:"comment",regex:"\\/\\/",next:"line_comment"},i.getStartRule("doc-start"),{token:"comment",regex:/\/\*/,next:"comment"},{token:"string",regex:"'(?=.)",next:"qstring"},{token:"string",regex:'"(?=.)',next:"qqstring"},{token:"constant.numeric",regex:/0[xX][0-9a-fA-F]+\b/},{token:"constant.numeric",regex:/[+-]?\d+(?:(?:\.\d*)?(?:[eE][+-]?\d+)?)?\b/},{token:["storage.type","punctuation.operator","support.function","punctuation.operator","entity.name.function","text","keyword.operator"],regex:"("+r+")(\\.)(prototype)(\\.)("+r+")(\\s*)(=)",next:"function_arguments"},{token:["storage.type","punctuation.operator","entity.name.function","text","keyword.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\.)("+r+")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["entity.name.function","text","keyword.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\s*)(=)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["storage.type","punctuation.operator","entity.name.function","text","keyword.operator","text","storage.type","text","entity.name.function","text","paren.lparen"],regex:"("+r+")(\\.)("+r+")(\\s*)(=)(\\s*)(function)(\\s+)(\\w+)(\\s*)(\\()",next:"function_arguments"},{token:["storage.type","text","entity.name.function","text","paren.lparen"],regex:"(function)(\\s+)("+r+")(\\s*)(\\()",next:"function_arguments"},{token:["entity.name.function","text","punctuation.operator","text","storage.type","text","paren.lparen"],regex:"("+r+")(\\s*)(:)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:["text","text","storage.type","text","paren.lparen"],regex:"(:)(\\s*)(function)(\\s*)(\\()",next:"function_arguments"},{token:"keyword",regex:"(?:"+n+")\\b",next:"start"},{token:["punctuation.operator","support.function"],regex:/(\.)(s(?:h(?:ift|ow(?:Mod(?:elessDialog|alDialog)|Help))|croll(?:X|By(?:Pages|Lines)?|Y|To)?|t(?:op|rike)|i(?:n|zeToContent|debar|gnText)|ort|u(?:p|b(?:str(?:ing)?)?)|pli(?:ce|t)|e(?:nd|t(?:Re(?:sizable|questHeader)|M(?:i(?:nutes|lliseconds)|onth)|Seconds|Ho(?:tKeys|urs)|Year|Cursor|Time(?:out)?|Interval|ZOptions|Date|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Date|FullYear)|FullYear|Active)|arch)|qrt|lice|avePreferences|mall)|h(?:ome|andleEvent)|navigate|c(?:har(?:CodeAt|At)|o(?:s|n(?:cat|textual|firm)|mpile)|eil|lear(?:Timeout|Interval)?|a(?:ptureEvents|ll)|reate(?:StyleSheet|Popup|EventObject))|t(?:o(?:GMTString|S(?:tring|ource)|U(?:TCString|pperCase)|Lo(?:caleString|werCase))|est|a(?:n|int(?:Enabled)?))|i(?:s(?:NaN|Finite)|ndexOf|talics)|d(?:isableExternalCapture|ump|etachEvent)|u(?:n(?:shift|taint|escape|watch)|pdateCommands)|j(?:oin|avaEnabled)|p(?:o(?:p|w)|ush|lugins.refresh|a(?:ddings|rse(?:Int|Float)?)|r(?:int|ompt|eference))|e(?:scape|nableExternalCapture|val|lementFromPoint|x(?:p|ec(?:Script|Command)?))|valueOf|UTC|queryCommand(?:State|Indeterm|Enabled|Value)|f(?:i(?:nd|le(?:ModifiedDate|Size|CreatedDate|UpdatedDate)|xed)|o(?:nt(?:size|color)|rward)|loor|romCharCode)|watch|l(?:ink|o(?:ad|g)|astIndexOf)|a(?:sin|nchor|cos|t(?:tachEvent|ob|an(?:2)?)|pply|lert|b(?:s|ort))|r(?:ou(?:nd|teEvents)|e(?:size(?:By|To)|calc|turnValue|place|verse|l(?:oad|ease(?:Capture|Events)))|andom)|g(?:o|et(?:ResponseHeader|M(?:i(?:nutes|lliseconds)|onth)|Se(?:conds|lection)|Hours|Year|Time(?:zoneOffset)?|Da(?:y|te)|UTC(?:M(?:i(?:nutes|lliseconds)|onth)|Seconds|Hours|Da(?:y|te)|FullYear)|FullYear|A(?:ttention|llResponseHeaders)))|m(?:in|ove(?:B(?:y|elow)|To(?:Absolute)?|Above)|ergeAttributes|a(?:tch|rgins|x))|b(?:toa|ig|o(?:ld|rderWidths)|link|ack))\b(?=\()/},{token:["punctuation.operator","support.function.dom"],regex:/(\.)(s(?:ub(?:stringData|mit)|plitText|e(?:t(?:NamedItem|Attribute(?:Node)?)|lect))|has(?:ChildNodes|Feature)|namedItem|c(?:l(?:ick|o(?:se|neNode))|reate(?:C(?:omment|DATASection|aption)|T(?:Head|extNode|Foot)|DocumentFragment|ProcessingInstruction|E(?:ntityReference|lement)|Attribute))|tabIndex|i(?:nsert(?:Row|Before|Cell|Data)|tem)|open|delete(?:Row|C(?:ell|aption)|T(?:Head|Foot)|Data)|focus|write(?:ln)?|a(?:dd|ppend(?:Child|Data))|re(?:set|place(?:Child|Data)|move(?:NamedItem|Child|Attribute(?:Node)?)?)|get(?:NamedItem|Element(?:sBy(?:Name|TagName)|ById)|Attribute(?:Node)?)|blur)\b(?=\()/},{token:["punctuation.operator","support.constant"],regex:/(\.)(s(?:ystemLanguage|cr(?:ipts|ollbars|een(?:X|Y|Top|Left))|t(?:yle(?:Sheets)?|atus(?:Text|bar)?)|ibling(?:Below|Above)|ource|uffixes|e(?:curity(?:Policy)?|l(?:ection|f)))|h(?:istory|ost(?:name)?|as(?:h|Focus))|y|X(?:MLDocument|SLDocument)|n(?:ext|ame(?:space(?:s|URI)|Prop))|M(?:IN_VALUE|AX_VALUE)|c(?:haracterSet|o(?:n(?:structor|trollers)|okieEnabled|lorDepth|mp(?:onents|lete))|urrent|puClass|l(?:i(?:p(?:boardData)?|entInformation)|osed|asses)|alle(?:e|r)|rypto)|t(?:o(?:olbar|p)|ext(?:Transform|Indent|Decoration|Align)|ags)|SQRT(?:1_2|2)|i(?:n(?:ner(?:Height|Width)|put)|ds|gnoreCase)|zIndex|o(?:scpu|n(?:readystatechange|Line)|uter(?:Height|Width)|p(?:sProfile|ener)|ffscreenBuffering)|NEGATIVE_INFINITY|d(?:i(?:splay|alog(?:Height|Top|Width|Left|Arguments)|rectories)|e(?:scription|fault(?:Status|Ch(?:ecked|arset)|View)))|u(?:ser(?:Profile|Language|Agent)|n(?:iqueID|defined)|pdateInterval)|_content|p(?:ixelDepth|ort|ersonalbar|kcs11|l(?:ugins|atform)|a(?:thname|dding(?:Right|Bottom|Top|Left)|rent(?:Window|Layer)?|ge(?:X(?:Offset)?|Y(?:Offset)?))|r(?:o(?:to(?:col|type)|duct(?:Sub)?|mpter)|e(?:vious|fix)))|e(?:n(?:coding|abledPlugin)|x(?:ternal|pando)|mbeds)|v(?:isibility|endor(?:Sub)?|Linkcolor)|URLUnencoded|P(?:I|OSITIVE_INFINITY)|f(?:ilename|o(?:nt(?:Size|Family|Weight)|rmName)|rame(?:s|Element)|gColor)|E|whiteSpace|l(?:i(?:stStyleType|n(?:eHeight|kColor))|o(?:ca(?:tion(?:bar)?|lName)|wsrc)|e(?:ngth|ft(?:Context)?)|a(?:st(?:M(?:odified|atch)|Index|Paren)|yer(?:s|X)|nguage))|a(?:pp(?:MinorVersion|Name|Co(?:deName|re)|Version)|vail(?:Height|Top|Width|Left)|ll|r(?:ity|guments)|Linkcolor|bove)|r(?:ight(?:Context)?|e(?:sponse(?:XML|Text)|adyState))|global|x|m(?:imeTypes|ultiline|enubar|argin(?:Right|Bottom|Top|Left))|L(?:N(?:10|2)|OG(?:10E|2E))|b(?:o(?:ttom|rder(?:Width|RightWidth|BottomWidth|Style|Color|TopWidth|LeftWidth))|ufferDepth|elow|ackground(?:Color|Image)))\b/},{token:["support.constant"],regex:/that\b/},{token:["storage.type","punctuation.operator","support.function.firebug"],regex:/(console)(\.)(warn|info|log|error|time|trace|timeEnd|assert)\b/},{token:t,regex:r},{token:"keyword.operator",regex:/--|\+\+|===|==|=|!=|!==|<=|>=|<<=|>>=|>>>=|<>|<|>|!|&&|\|\||\?\:|[!$%&*+\-~\/^]=?/,next:"start"},{token:"punctuation.operator",regex:/[?:,;.]/,next:"start"},{token:"paren.lparen",regex:/[\[({]/,next:"start"},{token:"paren.rparen",regex:/[\])}]/},{token:"comment",regex:/^#!.*$/}],start:[i.getStartRule("doc-start"),{token:"comment",regex:"\\/\\*",next:"comment_regex_allowed"},{token:"comment",regex:"\\/\\/",next:"line_comment_regex_allowed"},{token:"string.regexp",regex:"\\/",next:"regex"},{token:"text",regex:"\\s+|^$",next:"start"},{token:"empty",regex:"",next:"no_regex"}],regex:[{token:"regexp.keyword.operator",regex:"\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"},{token:"string.regexp",regex:"/[sxngimy]*",next:"no_regex"},{token:"invalid",regex:/\{\d+\b,?\d*\}[+*]|[+*$^?][+*]|[$^][?]|\?{3,}/},{token:"constant.language.escape",regex:/\(\?[:=!]|\)|\{\d+\b,?\d*\}|[+*]\?|[()$^+*?.]/},{token:"constant.language.delimiter",regex:/\|/},{token:"constant.language.escape",regex:/\[\^?/,next:"regex_character_class"},{token:"empty",regex:"$",next:"no_regex"},{defaultToken:"string.regexp"}],regex_character_class:[{token:"regexp.charclass.keyword.operator",regex:"\\\\(?:u[\\da-fA-F]{4}|x[\\da-fA-F]{2}|.)"},{token:"constant.language.escape",regex:"]",next:"regex"},{token:"constant.language.escape",regex:"-"},{token:"empty",regex:"$",next:"no_regex"},{defaultToken:"string.regexp.charachterclass"}],function_arguments:[{token:"variable.parameter",regex:r},{token:"punctuation.operator",regex:"[, ]+"},{token:"punctuation.operator",regex:"$"},{token:"empty",regex:"",next:"no_regex"}],comment_regex_allowed:[i.getTagRule(),{token:"comment",regex:"\\*\\/",next:"start"},{defaultToken:"comment",caseInsensitive:!0}],comment:[i.getTagRule(),{token:"comment",regex:"\\*\\/",next:"no_regex"},{defaultToken:"comment",caseInsensitive:!0}],line_comment_regex_allowed:[i.getTagRule(),{token:"comment",regex:"$|^",next:"start"},{defaultToken:"comment",caseInsensitive:!0}],line_comment:[i.getTagRule(),{token:"comment",regex:"$|^",next:"no_regex"},{defaultToken:"comment",caseInsensitive:!0}],qqstring:[{token:"constant.language.escape",regex:s},{token:"string",regex:"\\\\$",next:"qqstring"},{token:"string",regex:'"|$',next:"no_regex"},{defaultToken:"string"}],qstring:[{token:"constant.language.escape",regex:s},{token:"string",regex:"\\\\$",next:"qstring"},{token:"string",regex:"'|$",next:"no_regex"},{defaultToken:"string"}]},(!e||!e.noES6)&&this.$rules.no_regex.unshift({regex:"[{}]",onMatch:function(e,t,n){this.next=e=="{"?this.nextState:"";if(e=="{"&&n.length)return n.unshift("start",t),"paren";if(e=="}"&&n.length){n.shift(),this.next=n.shift();if(this.next.indexOf("string")!=-1)return"paren.quasi.end"}return e=="{"?"paren.lparen":"paren.rparen"},nextState:"start"},{token:"string.quasi.start",regex:/`/,push:[{token:"constant.language.escape",regex:s},{token:"paren.quasi.start",regex:/\${/,push:"start"},{token:"string.quasi.end",regex:/`/,next:"pop"},{defaultToken:"string.quasi"}]}),this.embedRules(i,"doc-",[i.getEndRule("no_regex")]),this.normalizeRules()};r.inherits(o,s),t.JavaScriptHighlightRules=o}),ace.define("ace/mode/matching_brace_outdent",["require","exports","module","ace/range"],function(e,t,n){"use strict";var r=e("../range").Range,i=function(){};(function(){this.checkOutdent=function(e,t){return/^\s+$/.test(e)?/^\s*\}/.test(t):!1},this.autoOutdent=function(e,t){var n=e.getLine(t),i=n.match(/^(\s*\})/);if(!i)return 0;var s=i[1].length,o=e.findMatchingBracket({row:t,column:s});if(!o||o.row==t)return 0;var u=this.$getIndent(e.getLine(o.row));e.replace(new r(t,0,t,s-1),u)},this.$getIndent=function(e){return e.match(/^\s*/)[0]}}).call(i.prototype),t.MatchingBraceOutdent=i}),ace.define("ace/mode/behaviour/cstyle",["require","exports","module","ace/lib/oop","ace/mode/behaviour","ace/token_iterator","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../behaviour").Behaviour,s=e("../../token_iterator").TokenIterator,o=e("../../lib/lang"),u=["text","paren.rparen","punctuation.operator"],a=["text","paren.rparen","punctuation.operator","comment"],f,l={},c=function(e){var t=-1;e.multiSelect&&(t=e.selection.index,l.rangeCount!=e.multiSelect.rangeCount&&(l={rangeCount:e.multiSelect.rangeCount}));if(l[t])return f=l[t];f=l[t]={autoInsertedBrackets:0,autoInsertedRow:-1,autoInsertedLineEnd:"",maybeInsertedBrackets:0,maybeInsertedRow:-1,maybeInsertedLineStart:"",maybeInsertedLineEnd:""}},h=function(){this.add("braces","insertion",function(e,t,n,r,i){var s=n.getCursorPosition(),u=r.doc.getLine(s.row);if(i=="{"){c(n);var a=n.getSelectionRange(),l=r.doc.getTextRange(a);if(l!==""&&l!=="{"&&n.getWrapBehavioursEnabled())return{text:"{"+l+"}",selection:!1};if(h.isSaneInsertion(n,r))return/[\]\}\)]/.test(u[s.column])||n.inMultiSelectMode?(h.recordAutoInsert(n,r,"}"),{text:"{}",selection:[1,1]}):(h.recordMaybeInsert(n,r,"{"),{text:"{",selection:[1,1]})}else if(i=="}"){c(n);var p=u.substring(s.column,s.column+1);if(p=="}"){var d=r.$findOpeningBracket("}",{column:s.column+1,row:s.row});if(d!==null&&h.isAutoInsertedClosing(s,u,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}else{if(i=="\n"||i=="\r\n"){c(n);var v="";h.isMaybeInsertedClosing(s,u)&&(v=o.stringRepeat("}",f.maybeInsertedBrackets),h.clearMaybeInsertedClosing());var p=u.substring(s.column,s.column+1);if(p==="}"){var m=r.findMatchingBracket({row:s.row,column:s.column+1},"}");if(!m)return null;var g=this.$getIndent(r.getLine(m.row))}else{if(!v){h.clearMaybeInsertedClosing();return}var g=this.$getIndent(u)}var y=g+r.getTabString();return{text:"\n"+y+"\n"+g+v,selection:[1,y.length,1,y.length]}}h.clearMaybeInsertedClosing()}}),this.add("braces","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="{"){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.end.column,i.end.column+1);if(u=="}")return i.end.column++,i;f.maybeInsertedBrackets--}}),this.add("parens","insertion",function(e,t,n,r,i){if(i=="("){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return{text:"("+o+")",selection:!1};if(h.isSaneInsertion(n,r))return h.recordAutoInsert(n,r,")"),{text:"()",selection:[1,1]}}else if(i==")"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f==")"){var l=r.$findOpeningBracket(")",{column:u.column+1,row:u.row});if(l!==null&&h.isAutoInsertedClosing(u,a,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("parens","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="("){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==")")return i.end.column++,i}}),this.add("brackets","insertion",function(e,t,n,r,i){if(i=="["){c(n);var s=n.getSelectionRange(),o=r.doc.getTextRange(s);if(o!==""&&n.getWrapBehavioursEnabled())return{text:"["+o+"]",selection:!1};if(h.isSaneInsertion(n,r))return h.recordAutoInsert(n,r,"]"),{text:"[]",selection:[1,1]}}else if(i=="]"){c(n);var u=n.getCursorPosition(),a=r.doc.getLine(u.row),f=a.substring(u.column,u.column+1);if(f=="]"){var l=r.$findOpeningBracket("]",{column:u.column+1,row:u.row});if(l!==null&&h.isAutoInsertedClosing(u,a,i))return h.popAutoInsertedClosing(),{text:"",selection:[1,1]}}}}),this.add("brackets","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&s=="["){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u=="]")return i.end.column++,i}}),this.add("string_dquotes","insertion",function(e,t,n,r,i){if(i=='"'||i=="'"){c(n);var s=i,o=n.getSelectionRange(),u=r.doc.getTextRange(o);if(u!==""&&u!=="'"&&u!='"'&&n.getWrapBehavioursEnabled())return{text:s+u+s,selection:!1};var a=n.getCursorPosition(),f=r.doc.getLine(a.row),l=f.substring(a.column-1,a.column),h=f.substring(a.column,a.column+1),p=r.getTokenAt(a.row,a.column),d=r.getTokenAt(a.row,a.column+1);if(l=="\\"&&p&&/escape/.test(p.type))return null;var v=p&&/string/.test(p.type),m=!d||/string/.test(d.type),g;if(h==s)g=v!==m;else{if(v&&!m)return null;if(v&&m)return null;var y=r.$mode.tokenRe;y.lastIndex=0;var b=y.test(l);y.lastIndex=0;var w=y.test(l);if(b||w)return null;if(h&&!/[\s;,.})\]\\]/.test(h))return null;g=!0}return{text:g?s+s:"",selection:[1,1]}}}),this.add("string_dquotes","deletion",function(e,t,n,r,i){var s=r.doc.getTextRange(i);if(!i.isMultiLine()&&(s=='"'||s=="'")){c(n);var o=r.doc.getLine(i.start.row),u=o.substring(i.start.column+1,i.start.column+2);if(u==s)return i.end.column++,i}})};h.isSaneInsertion=function(e,t){var n=e.getCursorPosition(),r=new s(t,n.row,n.column);if(!this.$matchTokenType(r.getCurrentToken()||"text",u)){var i=new s(t,n.row,n.column+1);if(!this.$matchTokenType(i.getCurrentToken()||"text",u))return!1}return r.stepForward(),r.getCurrentTokenRow()!==n.row||this.$matchTokenType(r.getCurrentToken()||"text",a)},h.$matchTokenType=function(e,t){return t.indexOf(e.type||e)>-1},h.recordAutoInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isAutoInsertedClosing(r,i,f.autoInsertedLineEnd[0])||(f.autoInsertedBrackets=0),f.autoInsertedRow=r.row,f.autoInsertedLineEnd=n+i.substr(r.column),f.autoInsertedBrackets++},h.recordMaybeInsert=function(e,t,n){var r=e.getCursorPosition(),i=t.doc.getLine(r.row);this.isMaybeInsertedClosing(r,i)||(f.maybeInsertedBrackets=0),f.maybeInsertedRow=r.row,f.maybeInsertedLineStart=i.substr(0,r.column)+n,f.maybeInsertedLineEnd=i.substr(r.column),f.maybeInsertedBrackets++},h.isAutoInsertedClosing=function(e,t,n){return f.autoInsertedBrackets>0&&e.row===f.autoInsertedRow&&n===f.autoInsertedLineEnd[0]&&t.substr(e.column)===f.autoInsertedLineEnd},h.isMaybeInsertedClosing=function(e,t){return f.maybeInsertedBrackets>0&&e.row===f.maybeInsertedRow&&t.substr(e.column)===f.maybeInsertedLineEnd&&t.substr(0,e.column)==f.maybeInsertedLineStart},h.popAutoInsertedClosing=function(){f.autoInsertedLineEnd=f.autoInsertedLineEnd.substr(1),f.autoInsertedBrackets--},h.clearMaybeInsertedClosing=function(){f&&(f.maybeInsertedBrackets=0,f.maybeInsertedRow=-1)},r.inherits(h,i),t.CstyleBehaviour=h}),ace.define("ace/mode/folding/cstyle",["require","exports","module","ace/lib/oop","ace/range","ace/mode/folding/fold_mode"],function(e,t,n){"use strict";var r=e("../../lib/oop"),i=e("../../range").Range,s=e("./fold_mode").FoldMode,o=t.FoldMode=function(e){e&&(this.foldingStartMarker=new RegExp(this.foldingStartMarker.source.replace(/\|[^|]*?$/,"|"+e.start)),this.foldingStopMarker=new RegExp(this.foldingStopMarker.source.replace(/\|[^|]*?$/,"|"+e.end)))};r.inherits(o,s),function(){this.foldingStartMarker=/(\{|\[)[^\}\]]*$|^\s*(\/\*)/,this.foldingStopMarker=/^[^\[\{]*(\}|\])|^[\s\*]*(\*\/)/,this.singleLineBlockCommentRe=/^\s*(\/\*).*\*\/\s*$/,this.tripleStarBlockCommentRe=/^\s*(\/\*\*\*).*\*\/\s*$/,this.startRegionRe=/^\s*(\/\*|\/\/)#region\b/,this._getFoldWidgetBase=this.getFoldWidget,this.getFoldWidget=function(e,t,n){var r=e.getLine(n);if(this.singleLineBlockCommentRe.test(r)&&!this.startRegionRe.test(r)&&!this.tripleStarBlockCommentRe.test(r))return"";var i=this._getFoldWidgetBase(e,t,n);return!i&&this.startRegionRe.test(r)?"start":i},this.getFoldWidgetRange=function(e,t,n,r){var i=e.getLine(n);if(this.startRegionRe.test(i))return this.getCommentRegionBlock(e,i,n);var s=i.match(this.foldingStartMarker);if(s){var o=s.index;if(s[1])return this.openingBracketBlock(e,s[1],n,o);var u=e.getCommentFoldRange(n,o+s[0].length,1);return u&&!u.isMultiLine()&&(r?u=this.getSectionRange(e,n):t!="all"&&(u=null)),u}if(t==="markbegin")return;var s=i.match(this.foldingStopMarker);if(s){var o=s.index+s[0].length;return s[1]?this.closingBracketBlock(e,s[1],n,o):e.getCommentFoldRange(n,o,-1)}},this.getSectionRange=function(e,t){var n=e.getLine(t),r=n.search(/\S/),s=t,o=n.length;t+=1;var u=t,a=e.getLength();while(++t<a){n=e.getLine(t);var f=n.search(/\S/);if(f===-1)continue;if(r>f)break;var l=this.getFoldWidgetRange(e,"all",t);if(l){if(l.start.row<=s)break;if(l.isMultiLine())t=l.end.row;else if(r==f)break}u=t}return new i(s,o,u,e.getLine(u).length)},this.getCommentRegionBlock=function(e,t,n){var r=t.search(/\s*$/),s=e.getLength(),o=n,u=/^\s*(?:\/\*|\/\/)#(end)?region\b/,a=1;while(++n<s){t=e.getLine(n);var f=u.exec(t);if(!f)continue;f[1]?a--:a++;if(!a)break}var l=n;if(l>o)return new i(o,r,l,t.length)}}.call(o.prototype)}),ace.define("ace/mode/javascript",["require","exports","module","ace/lib/oop","ace/mode/text","ace/mode/javascript_highlight_rules","ace/mode/matching_brace_outdent","ace/range","ace/worker/worker_client","ace/mode/behaviour/cstyle","ace/mode/folding/cstyle"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./text").Mode,s=e("./javascript_highlight_rules").JavaScriptHighlightRules,o=e("./matching_brace_outdent").MatchingBraceOutdent,u=e("../range").Range,a=e("../worker/worker_client").WorkerClient,f=e("./behaviour/cstyle").CstyleBehaviour,l=e("./folding/cstyle").FoldMode,c=function(){this.HighlightRules=s,this.$outdent=new o,this.$behaviour=new f,this.foldingRules=new l};r.inherits(c,i),function(){this.lineCommentStart="//",this.blockComment={start:"/*",end:"*/"},this.getNextLineIndent=function(e,t,n){var r=this.$getIndent(t),i=this.getTokenizer().getLineTokens(t,e),s=i.tokens,o=i.state;if(s.length&&s[s.length-1].type=="comment")return r;if(e=="start"||e=="no_regex"){var u=t.match(/^.*(?:\bcase\b.*\:|[\{\(\[])\s*$/);u&&(r+=n)}else if(e=="doc-start"){if(o=="start"||o=="no_regex")return"";var u=t.match(/^\s*(\/?)\*/);u&&(u[1]&&(r+=" "),r+="* ")}return r},this.checkOutdent=function(e,t,n){return this.$outdent.checkOutdent(t,n)},this.autoOutdent=function(e,t,n){this.$outdent.autoOutdent(t,n)},this.createWorker=function(e){var t=new a(["ace"],"ace/mode/javascript_worker","JavaScriptWorker");return t.attachToDocument(e.getDocument()),t.on("jslint",function(t){e.setAnnotations(t.data)}),t.on("terminate",function(){e.clearAnnotations()}),t},this.$id="ace/mode/javascript"}.call(c.prototype),t.Mode=c}),ace.define("ace/mode/typescript_highlight_rules",["require","exports","module","ace/lib/oop","ace/mode/javascript_highlight_rules"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./javascript_highlight_rules").JavaScriptHighlightRules,s=function(){var e=[{token:["keyword.operator.ts","text","variable.parameter.function.ts","text"],regex:"\\b(module)(\\s*)([a-zA-Z0-9_?.$][\\w?.$]*)(\\s*\\{)"},{token:["storage.type.variable.ts","text","keyword.other.ts","text"],regex:"(super)(\\s*\\()([a-zA-Z0-9,_?.$\\s]+\\s*)(\\))"},{token:["entity.name.function.ts","paren.lparen","paren.rparen"],regex:"([a-zA-Z_?.$][\\w?.$]*)(\\()(\\))"},{token:["variable.parameter.function.ts","text","variable.parameter.function.ts"],regex:"([a-zA-Z0-9_?.$][\\w?.$]*)(\\s*:\\s*)([a-zA-Z0-9_?.$][\\w?.$]*)"},{token:["keyword.operator.ts"],regex:"(?:\\b(constructor|declare|interface|as|AS|public|private|class|extends|export|super)\\b)"},{token:["storage.type.variable.ts"],regex:"(?:\\b(this\\.|string\\b|bool\\b|number)\\b)"},{token:["keyword.operator.ts","storage.type.variable.ts","keyword.operator.ts","storage.type.variable.ts"],regex:"(class)(\\s+[a-zA-Z0-9_?.$][\\w?.$]*\\s+)(extends)(\\s+[a-zA-Z0-9_?.$][\\w?.$]*\\s+)?"},{token:"keyword",regex:"(?:super|export|class|extends|import)\\b"}],t=(new i).getRules();t.start=e.concat(t.start),this.$rules=t};r.inherits(s,i),t.TypeScriptHighlightRules=s}),ace.define("ace/mode/typescript",["require","exports","module","ace/lib/oop","ace/mode/javascript","ace/mode/typescript_highlight_rules","ace/mode/behaviour/cstyle","ace/mode/folding/cstyle","ace/mode/matching_brace_outdent"],function(e,t,n){"use strict";var r=e("../lib/oop"),i=e("./javascript").Mode,s=e("./typescript_highlight_rules").TypeScriptHighlightRules,o=e("./behaviour/cstyle").CstyleBehaviour,u=e("./folding/cstyle").FoldMode,a=e("./matching_brace_outdent").MatchingBraceOutdent,f=function(){this.HighlightRules=s,this.$outdent=new a,this.$behaviour=new o,this.foldingRules=new u};r.inherits(f,i),function(){this.createWorker=function(e){return null},this.$id="ace/mode/typescript"}.call(f.prototype),t.Mode=f})
\ No newline at end of file
diff --git a/v3/js/ace/src-min-noconflict/worker-javascript.js b/v3/js/ace/src-min-noconflict/worker-javascript.js
new file mode 100644
index 000000000..325821a3f
--- /dev/null
+++ b/v3/js/ace/src-min-noconflict/worker-javascript.js
@@ -0,0 +1 @@
+"no use strict";(function(e){if(typeof e.window!="undefined"&&e.document)return;e.console=function(){var e=Array.prototype.slice.call(arguments,0);postMessage({type:"log",data:e})},e.console.error=e.console.warn=e.console.log=e.console.trace=e.console,e.window=e,e.ace=e,e.onerror=function(e,t,n,r,i){postMessage({type:"error",data:{message:e,file:t,line:n,col:r,stack:i.stack}})},e.normalizeModule=function(t,n){if(n.indexOf("!")!==-1){var r=n.split("!");return e.normalizeModule(t,r[0])+"!"+e.normalizeModule(t,r[1])}if(n.charAt(0)=="."){var i=t.split("/").slice(0,-1).join("/");n=(i?i+"/":"")+n;while(n.indexOf(".")!==-1&&s!=n){var s=n;n=n.replace(/^\.\//,"").replace(/\/\.\//,"/").replace(/[^\/]+\/\.\.\//,"")}}return n},e.require=function(t,n){n||(n=t,t=null);if(!n.charAt)throw new Error("worker.js require() accepts only (parentId, id) as arguments");n=e.normalizeModule(t,n);var r=e.require.modules[n];if(r)return r.initialized||(r.initialized=!0,r.exports=r.factory().exports),r.exports;var i=n.split("/");if(!e.require.tlns)return console.log("unable to load "+n);i[0]=e.require.tlns[i[0]]||i[0];var s=i.join("/")+".js";return e.require.id=n,importScripts(s),e.require(t,n)},e.require.modules={},e.require.tlns={},e.define=function(t,n,r){arguments.length==2?(r=n,typeof t!="string"&&(n=t,t=e.require.id)):arguments.length==1&&(r=t,n=[],t=e.require.id);if(typeof r!="function"){e.require.modules[t]={exports:r,initialized:!0};return}n.length||(n=["require","exports","module"]);var i=function(n){return e.require(t,n)};e.require.modules[t]={exports:{},factory:function(){var e=this,t=r.apply(this,n.map(function(t){switch(t){case"require":return i;case"exports":return e.exports;case"module":return e;default:return i(t)}}));return t&&(e.exports=t),e}}},e.define.amd={},e.initBaseUrls=function(t){require.tlns=t},e.initSender=function(){var n=e.require("ace/lib/event_emitter").EventEmitter,r=e.require("ace/lib/oop"),i=function(){};return function(){r.implement(this,n),this.callback=function(e,t){postMessage({type:"call",id:t,data:e})},this.emit=function(e,t){postMessage({type:"event",name:e,data:t})}}.call(i.prototype),new i};var t=e.main=null,n=e.sender=null;e.onmessage=function(r){var i=r.data;if(i.command){if(!t[i.command])throw new Error("Unknown command:"+i.command);t[i.command].apply(t,i.args)}else if(i.init){initBaseUrls(i.tlns),require("ace/lib/es5-shim"),n=e.sender=initSender();var s=require(i.module)[i.classname];t=e.main=new s(n)}else i.event&&n&&n._signal(i.event,i.data)}})(this),ace.define("ace/lib/oop",["require","exports","module"],function(e,t,n){"use strict";t.inherits=function(e,t){e.super_=t,e.prototype=Object.create(t.prototype,{constructor:{value:e,enumerable:!1,writable:!0,configurable:!0}})},t.mixin=function(e,t){for(var n in t)e[n]=t[n];return e},t.implement=function(e,n){t.mixin(e,n)}}),ace.define("ace/lib/event_emitter",["require","exports","module"],function(e,t,n){"use strict";var r={},i=function(){this.propagationStopped=!0},s=function(){this.defaultPrevented=!0};r._emit=r._dispatchEvent=function(e,t){this._eventRegistry||(this._eventRegistry={}),this._defaultHandlers||(this._defaultHandlers={});var n=this._eventRegistry[e]||[],r=this._defaultHandlers[e];if(!n.length&&!r)return;if(typeof t!="object"||!t)t={};t.type||(t.type=e),t.stopPropagation||(t.stopPropagation=i),t.preventDefault||(t.preventDefault=s),n=n.slice();for(var o=0;o<n.length;o++){n[o](t,this);if(t.propagationStopped)break}if(r&&!t.defaultPrevented)return r(t,this)},r._signal=function(e,t){var n=(this._eventRegistry||{})[e];if(!n)return;n=n.slice();for(var r=0;r<n.length;r++)n[r](t,this)},r.once=function(e,t){var n=this;t&&this.addEventListener(e,function r(){n.removeEventListener(e,r),t.apply(null,arguments)})},r.setDefaultHandler=function(e,t){var n=this._defaultHandlers;n||(n=this._defaultHandlers={_disabled_:{}});if(n[e]){var r=n[e],i=n._disabled_[e];i||(n._disabled_[e]=i=[]),i.push(r);var s=i.indexOf(t);s!=-1&&i.splice(s,1)}n[e]=t},r.removeDefaultHandler=function(e,t){var n=this._defaultHandlers;if(!n)return;var r=n._disabled_[e];if(n[e]==t){var i=n[e];r&&this.setDefaultHandler(e,r.pop())}else if(r){var s=r.indexOf(t);s!=-1&&r.splice(s,1)}},r.on=r.addEventListener=function(e,t,n){this._eventRegistry=this._eventRegistry||{};var r=this._eventRegistry[e];return r||(r=this._eventRegistry[e]=[]),r.indexOf(t)==-1&&r[n?"unshift":"push"](t),t},r.off=r.removeListener=r.removeEventListener=function(e,t){this._eventRegistry=this._eventRegistry||{};var n=this._eventRegistry[e];if(!n)return;var r=n.indexOf(t);r!==-1&&n.splice(r,1)},r.removeAllListeners=function(e){this._eventRegistry&&(this._eventRegistry[e]=[])},t.EventEmitter=r}),ace.define("ace/range",["require","exports","module"],function(e,t,n){"use strict";var r=function(e,t){return e.row-t.row||e.column-t.column},i=function(e,t,n,r){this.start={row:e,column:t},this.end={row:n,column:r}};(function(){this.isEqual=function(e){return this.start.row===e.start.row&&this.end.row===e.end.row&&this.start.column===e.start.column&&this.end.column===e.end.column},this.toString=function(){return"Range: ["+this.start.row+"/"+this.start.column+"] -> ["+this.end.row+"/"+this.end.column+"]"},this.contains=function(e,t){return this.compare(e,t)==0},this.compareRange=function(e){var t,n=e.end,r=e.start;return t=this.compare(n.row,n.column),t==1?(t=this.compare(r.row,r.column),t==1?2:t==0?1:0):t==-1?-2:(t=this.compare(r.row,r.column),t==-1?-1:t==1?42:0)},this.comparePoint=function(e){return this.compare(e.row,e.column)},this.containsRange=function(e){return this.comparePoint(e.start)==0&&this.comparePoint(e.end)==0},this.intersects=function(e){var t=this.compareRange(e);return t==-1||t==0||t==1},this.isEnd=function(e,t){return this.end.row==e&&this.end.column==t},this.isStart=function(e,t){return this.start.row==e&&this.start.column==t},this.setStart=function(e,t){typeof e=="object"?(this.start.column=e.column,this.start.row=e.row):(this.start.row=e,this.start.column=t)},this.setEnd=function(e,t){typeof e=="object"?(this.end.column=e.column,this.end.row=e.row):(this.end.row=e,this.end.column=t)},this.inside=function(e,t){return this.compare(e,t)==0?this.isEnd(e,t)||this.isStart(e,t)?!1:!0:!1},this.insideStart=function(e,t){return this.compare(e,t)==0?this.isEnd(e,t)?!1:!0:!1},this.insideEnd=function(e,t){return this.compare(e,t)==0?this.isStart(e,t)?!1:!0:!1},this.compare=function(e,t){return!this.isMultiLine()&&e===this.start.row?t<this.start.column?-1:t>this.end.column?1:0:e<this.start.row?-1:e>this.end.row?1:this.start.row===e?t>=this.start.column?0:-1:this.end.row===e?t<=this.end.column?0:1:0},this.compareStart=function(e,t){return this.start.row==e&&this.start.column==t?-1:this.compare(e,t)},this.compareEnd=function(e,t){return this.end.row==e&&this.end.column==t?1:this.compare(e,t)},this.compareInside=function(e,t){return this.end.row==e&&this.end.column==t?1:this.start.row==e&&this.start.column==t?-1:this.compare(e,t)},this.clipRows=function(e,t){if(this.end.row>t)var n={row:t+1,column:0};else if(this.end.row<e)var n={row:e,column:0};if(this.start.row>t)var r={row:t+1,column:0};else if(this.start.row<e)var r={row:e,column:0};return i.fromPoints(r||this.start,n||this.end)},this.extend=function(e,t){var n=this.compare(e,t);if(n==0)return this;if(n==-1)var r={row:e,column:t};else var s={row:e,column:t};return i.fromPoints(r||this.start,s||this.end)},this.isEmpty=function(){return this.start.row===this.end.row&&this.start.column===this.end.column},this.isMultiLine=function(){return this.start.row!==this.end.row},this.clone=function(){return i.fromPoints(this.start,this.end)},this.collapseRows=function(){return this.end.column==0?new i(this.start.row,0,Math.max(this.start.row,this.end.row-1),0):new i(this.start.row,0,this.end.row,0)},this.toScreenRange=function(e){var t=e.documentToScreenPosition(this.start),n=e.documentToScreenPosition(this.end);return new i(t.row,t.column,n.row,n.column)},this.moveBy=function(e,t){this.start.row+=e,this.start.column+=t,this.end.row+=e,this.end.column+=t}}).call(i.prototype),i.fromPoints=function(e,t){return new i(e.row,e.column,t.row,t.column)},i.comparePoints=r,i.comparePoints=function(e,t){return e.row-t.row||e.column-t.column},t.Range=i}),ace.define("ace/anchor",["require","exports","module","ace/lib/oop","ace/lib/event_emitter"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/event_emitter").EventEmitter,s=t.Anchor=function(e,t,n){this.$onChange=this.onChange.bind(this),this.attach(e),typeof n=="undefined"?this.setPosition(t.row,t.column):this.setPosition(t,n)};(function(){r.implement(this,i),this.getPosition=function(){return this.$clipPositionToDocument(this.row,this.column)},this.getDocument=function(){return this.document},this.$insertRight=!1,this.onChange=function(e){var t=e.data,n=t.range;if(n.start.row==n.end.row&&n.start.row!=this.row)return;if(n.start.row>this.row)return;if(n.start.row==this.row&&n.start.column>this.column)return;var r=this.row,i=this.column,s=n.start,o=n.end;if(t.action==="insertText")if(s.row===r&&s.column<=i){if(s.column!==i||!this.$insertRight)s.row===o.row?i+=o.column-s.column:(i-=s.column,r+=o.row-s.row)}else s.row!==o.row&&s.row<r&&(r+=o.row-s.row);else t.action==="insertLines"?(s.row!==r||i!==0||!this.$insertRight)&&s.row<=r&&(r+=o.row-s.row):t.action==="removeText"?s.row===r&&s.column<i?o.column>=i?i=s.column:i=Math.max(0,i-(o.column-s.column)):s.row!==o.row&&s.row<r?(o.row===r&&(i=Math.max(0,i-o.column)+s.column),r-=o.row-s.row):o.row===r&&(r-=o.row-s.row,i=Math.max(0,i-o.column)+s.column):t.action=="removeLines"&&s.row<=r&&(o.row<=r?r-=o.row-s.row:(r=s.row,i=0));this.setPosition(r,i,!0)},this.setPosition=function(e,t,n){var r;n?r={row:e,column:t}:r=this.$clipPositionToDocument(e,t);if(this.row==r.row&&this.column==r.column)return;var i={row:this.row,column:this.column};this.row=r.row,this.column=r.column,this._signal("change",{old:i,value:r})},this.detach=function(){this.document.removeEventListener("change",this.$onChange)},this.attach=function(e){this.document=e||this.document,this.document.on("change",this.$onChange)},this.$clipPositionToDocument=function(e,t){var n={};return e>=this.document.getLength()?(n.row=Math.max(0,this.document.getLength()-1),n.column=this.document.getLine(n.row).length):e<0?(n.row=0,n.column=0):(n.row=e,n.column=Math.min(this.document.getLine(n.row).length,Math.max(0,t))),t<0&&(n.column=0),n}}).call(s.prototype)}),ace.define("ace/document",["require","exports","module","ace/lib/oop","ace/lib/event_emitter","ace/range","ace/anchor"],function(e,t,n){"use strict";var r=e("./lib/oop"),i=e("./lib/event_emitter").EventEmitter,s=e("./range").Range,o=e("./anchor").Anchor,u=function(e){this.$lines=[],e.length===0?this.$lines=[""]:Array.isArray(e)?this._insertLines(0,e):this.insert({row:0,column:0},e)};(function(){r.implement(this,i),this.setValue=function(e){var t=this.getLength();this.remove(new s(0,0,t,this.getLine(t-1).length)),this.insert({row:0,column:0},e)},this.getValue=function(){return this.getAllLines().join(this.getNewLineCharacter())},this.createAnchor=function(e,t){return new o(this,e,t)},"aaa".split(/a/).length===0?this.$split=function(e){return e.replace(/\r\n|\r/g,"\n").split("\n")}:this.$split=function(e){return e.split(/\r\n|\r|\n/)},this.$detectNewLine=function(e){var t=e.match(/^.*?(\r\n|\r|\n)/m);this.$autoNewLine=t?t[1]:"\n",this._signal("changeNewLineMode")},this.getNewLineCharacter=function(){switch(this.$newLineMode){case"windows":return"\r\n";case"unix":return"\n";default:return this.$autoNewLine||"\n"}},this.$autoNewLine="",this.$newLineMode="auto",this.setNewLineMode=function(e){if(this.$newLineMode===e)return;this.$newLineMode=e,this._signal("changeNewLineMode")},this.getNewLineMode=function(){return this.$newLineMode},this.isNewLine=function(e){return e=="\r\n"||e=="\r"||e=="\n"},this.getLine=function(e){return this.$lines[e]||""},this.getLines=function(e,t){return this.$lines.slice(e,t+1)},this.getAllLines=function(){return this.getLines(0,this.getLength())},this.getLength=function(){return this.$lines.length},this.getTextRange=function(e){if(e.start.row==e.end.row)return this.getLine(e.start.row).substring(e.start.column,e.end.column);var t=this.getLines(e.start.row,e.end.row);t[0]=(t[0]||"").substring(e.start.column);var n=t.length-1;return e.end.row-e.start.row==n&&(t[n]=t[n].substring(0,e.end.column)),t.join(this.getNewLineCharacter())},this.$clipPosition=function(e){var t=this.getLength();return e.row>=t?(e.row=Math.max(0,t-1),e.column=this.getLine(t-1).length):e.row<0&&(e.row=0),e},this.insert=function(e,t){if(!t||t.length===0)return e;e=this.$clipPosition(e),this.getLength()<=1&&this.$detectNewLine(t);var n=this.$split(t),r=n.splice(0,1)[0],i=n.length==0?null:n.splice(n.length-1,1)[0];return e=this.insertInLine(e,r),i!==null&&(e=this.insertNewLine(e),e=this._insertLines(e.row,n),e=this.insertInLine(e,i||"")),e},this.insertLines=function(e,t){return e>=this.getLength()?this.insert({row:e,column:0},"\n"+t.join("\n")):this._insertLines(Math.max(e,0),t)},this._insertLines=function(e,t){if(t.length==0)return{row:e,column:0};while(t.length>61440){var n=this._insertLines(e,t.slice(0,61440));t=t.slice(61440),e=n.row}var r=[e,0];r.push.apply(r,t),this.$lines.splice.apply(this.$lines,r);var i=new s(e,0,e+t.length,0),o={action:"insertLines",range:i,lines:t};return this._signal("change",{data:o}),i.end},this.insertNewLine=function(e){e=this.$clipPosition(e);var t=this.$lines[e.row]||"";this.$lines[e.row]=t.substring(0,e.column),this.$lines.splice(e.row+1,0,t.substring(e.column,t.length));var n={row:e.row+1,column:0},r={action:"insertText",range:s.fromPoints(e,n),text:this.getNewLineCharacter()};return this._signal("change",{data:r}),n},this.insertInLine=function(e,t){if(t.length==0)return e;var n=this.$lines[e.row]||"";this.$lines[e.row]=n.substring(0,e.column)+t+n.substring(e.column);var r={row:e.row,column:e.column+t.length},i={action:"insertText",range:s.fromPoints(e,r),text:t};return this._signal("change",{data:i}),r},this.remove=function(e){e instanceof s||(e=s.fromPoints(e.start,e.end)),e.start=this.$clipPosition(e.start),e.end=this.$clipPosition(e.end);if(e.isEmpty())return e.start;var t=e.start.row,n=e.end.row;if(e.isMultiLine()){var r=e.start.column==0?t:t+1,i=n-1;e.end.column>0&&this.removeInLine(n,0,e.end.column),i>=r&&this._removeLines(r,i),r!=t&&(this.removeInLine(t,e.start.column,this.getLine(t).length),this.removeNewLine(e.start.row))}else this.removeInLine(t,e.start.column,e.end.column);return e.start},this.removeInLine=function(e,t,n){if(t==n)return;var r=new s(e,t,e,n),i=this.getLine(e),o=i.substring(t,n),u=i.substring(0,t)+i.substring(n,i.length);this.$lines.splice(e,1,u);var a={action:"removeText",range:r,text:o};return this._signal("change",{data:a}),r.start},this.removeLines=function(e,t){return e<0||t>=this.getLength()?this.remove(new s(e,0,t+1,0)):this._removeLines(e,t)},this._removeLines=function(e,t){var n=new s(e,0,t+1,0),r=this.$lines.splice(e,t-e+1),i={action:"removeLines",range:n,nl:this.getNewLineCharacter(),lines:r};return this._signal("change",{data:i}),r},this.removeNewLine=function(e){var t=this.getLine(e),n=this.getLine(e+1),r=new s(e,t.length,e+1,0),i=t+n;this.$lines.splice(e,2,i);var o={action:"removeText",range:r,text:this.getNewLineCharacter()};this._signal("change",{data:o})},this.replace=function(e,t){e instanceof s||(e=s.fromPoints(e.start,e.end));if(t.length==0&&e.isEmpty())return e.start;if(t==this.getTextRange(e))return e.end;this.remove(e);if(t)var n=this.insert(e.start,t);else n=e.start;return n},this.applyDeltas=function(e){for(var t=0;t<e.length;t++){var n=e[t],r=s.fromPoints(n.range.start,n.range.end);n.action=="insertLines"?this.insertLines(r.start.row,n.lines):n.action=="insertText"?this.insert(r.start,n.text):n.action=="removeLines"?this._removeLines(r.start.row,r.end.row-1):n.action=="removeText"&&this.remove(r)}},this.revertDeltas=function(e){for(var t=e.length-1;t>=0;t--){var n=e[t],r=s.fromPoints(n.range.start,n.range.end);n.action=="insertLines"?this._removeLines(r.start.row,r.end.row-1):n.action=="insertText"?this.remove(r):n.action=="removeLines"?this._insertLines(r.start.row,n.lines):n.action=="removeText"&&this.insert(r.start,n.text)}},this.indexToPosition=function(e,t){var n=this.$lines||this.getAllLines(),r=this.getNewLineCharacter().length;for(var i=t||0,s=n.length;i<s;i++){e-=n[i].length+r;if(e<0)return{row:i,column:e+n[i].length+r}}return{row:s-1,column:n[s-1].length}},this.positionToIndex=function(e,t){var n=this.$lines||this.getAllLines(),r=this.getNewLineCharacter().length,i=0,s=Math.min(e.row,n.length);for(var o=t||0;o<s;++o)i+=n[o].length+r;return i+e.column}}).call(u.prototype),t.Document=u}),ace.define("ace/lib/lang",["require","exports","module"],function(e,t,n){"use strict";t.last=function(e){return e[e.length-1]},t.stringReverse=function(e){return e.split("").reverse().join("")},t.stringRepeat=function(e,t){var n="";while(t>0){t&1&&(n+=e);if(t>>=1)e+=e}return n};var r=/^\s\s*/,i=/\s\s*$/;t.stringTrimLeft=function(e){return e.replace(r,"")},t.stringTrimRight=function(e){return e.replace(i,"")},t.copyObject=function(e){var t={};for(var n in e)t[n]=e[n];return t},t.copyArray=function(e){var t=[];for(var n=0,r=e.length;n<r;n++)e[n]&&typeof e[n]=="object"?t[n]=this.copyObject(e[n]):t[n]=e[n];return t},t.deepCopy=function(e){if(typeof e!="object"||!e)return e;var n=e.constructor;if(n===RegExp)return e;var r=n();for(var i in e)typeof e[i]=="object"?r[i]=t.deepCopy(e[i]):r[i]=e[i];return r},t.arrayToMap=function(e){var t={};for(var n=0;n<e.length;n++)t[e[n]]=1;return t},t.createMap=function(e){var t=Object.create(null);for(var n in e)t[n]=e[n];return t},t.arrayRemove=function(e,t){for(var n=0;n<=e.length;n++)t===e[n]&&e.splice(n,1)},t.escapeRegExp=function(e){return e.replace(/([.*+?^${}()|[\]\/\\])/g,"\\$1")},t.escapeHTML=function(e){return e.replace(/&/g,"&#38;").replace(/"/g,"&#34;").replace(/'/g,"&#39;").replace(/</g,"&#60;")},t.getMatchOffsets=function(e,t){var n=[];return e.replace(t,function(e){n.push({offset:arguments[arguments.length-2],length:e.length})}),n},t.deferredCall=function(e){var t=null,n=function(){t=null,e()},r=function(e){return r.cancel(),t=setTimeout(n,e||0),r};return r.schedule=r,r.call=function(){return this.cancel(),e(),r},r.cancel=function(){return clearTimeout(t),t=null,r},r.isPending=function(){return t},r},t.delayedCall=function(e,t){var n=null,r=function(){n=null,e()},i=function(e){n==null&&(n=setTimeout(r,e||t))};return i.delay=function(e){n&&clearTimeout(n),n=setTimeout(r,e||t)},i.schedule=i,i.call=function(){this.cancel(),e()},i.cancel=function(){n&&clearTimeout(n),n=null},i.isPending=function(){return n},i}}),ace.define("ace/worker/mirror",["require","exports","module","ace/document","ace/lib/lang"],function(e,t,n){"use strict";var r=e("../document").Document,i=e("../lib/lang"),s=t.Mirror=function(e){this.sender=e;var t=this.doc=new r(""),n=this.deferredUpdate=i.delayedCall(this.onUpdate.bind(this)),s=this;e.on("change",function(e){t.applyDeltas(e.data);if(s.$timeout)return n.schedule(s.$timeout);s.onUpdate()})};(function(){this.$timeout=500,this.setTimeout=function(e){this.$timeout=e},this.setValue=function(e){this.doc.setValue(e),this.deferredUpdate.schedule(this.$timeout)},this.getValue=function(e){this.sender.callback(this.doc.getValue(),e)},this.onUpdate=function(){},this.isPending=function(){return this.deferredUpdate.isPending()}}).call(s.prototype)}),ace.define("ace/mode/javascript/jshint",["require","exports","module"],function(e,t,n){n.exports=function r(t,n,i){function s(u,a){if(!n[u]){if(!t[u]){var f=typeof e=="function"&&e;if(!a&&f)return f(u,!0);if(o)return o(u,!0);throw new Error("Cannot find module '"+u+"'")}var l=n[u]={exports:{}};t[u][0].call(l.exports,function(e){var n=t[u][1][e];return s(n?n:e)},l,l.exports,r,t,n,i)}return n[u].exports}var o=typeof e=="function"&&e;for(var u=0;u<i.length;u++)s(i[u]);return s}({1:[function(e,t,n){var r=[];for(var i=0;i<128;i++)r[i]=i===36||i>=65&&i<=90||i===95||i>=97&&i<=122;var s=[];for(var i=0;i<128;i++)s[i]=r[i]||i>=48&&i<=57;t.exports={asciiIdentifierStartTable:r,asciiIdentifierPartTable:s}},{}],2:[function(e,t,n){(function(){var e=this,r=e._,i={},s=Array.prototype,o=Object.prototype,u=Function.prototype,a=s.push,f=s.slice,l=s.concat,c=o.toString,h=o.hasOwnProperty,p=s.forEach,d=s.map,v=s.reduce,m=s.reduceRight,g=s.filter,y=s.every,b=s.some,w=s.indexOf,E=s.lastIndexOf,S=Array.isArray,x=Object.keys,T=u.bind,N=function(e){if(e instanceof N)return e;if(!(this instanceof N))return new N(e);this._wrapped=e};typeof n!="undefined"?(typeof t!="undefined"&&t.exports&&(n=t.exports=N),n._=N):e._=N,N.VERSION="1.6.0";var C=N.each=N.forEach=function(e,t,n){if(e==null)return e;if(p&&e.forEach===p)e.forEach(t,n);else if(e.length===+e.length){for(var r=0,s=e.length;r<s;r++)if(t.call(n,e[r],r,e)===i)return}else{var o=N.keys(e);for(var r=0,s=o.length;r<s;r++)if(t.call(n,e[o[r]],o[r],e)===i)return}return e};N.map=N.collect=function(e,t,n){var r=[];return e==null?r:d&&e.map===d?e.map(t,n):(C(e,function(e,i,s){r.push(t.call(n,e,i,s))}),r)};var k="Reduce of empty array with no initial value";N.reduce=N.foldl=N.inject=function(e,t,n,r){var i=arguments.length>2;e==null&&(e=[]);if(v&&e.reduce===v)return r&&(t=N.bind(t,r)),i?e.reduce(t,n):e.reduce(t);C(e,function(e,s,o){i?n=t.call(r,n,e,s,o):(n=e,i=!0)});if(!i)throw new TypeError(k);return n},N.reduceRight=N.foldr=function(e,t,n,r){var i=arguments.length>2;e==null&&(e=[]);if(m&&e.reduceRight===m)return r&&(t=N.bind(t,r)),i?e.reduceRight(t,n):e.reduceRight(t);var s=e.length;if(s!==+s){var o=N.keys(e);s=o.length}C(e,function(u,a,f){a=o?o[--s]:--s,i?n=t.call(r,n,e[a],a,f):(n=e[a],i=!0)});if(!i)throw new TypeError(k);return n},N.find=N.detect=function(e,t,n){var r;return L(e,function(e,i,s){if(t.call(n,e,i,s))return r=e,!0}),r},N.filter=N.select=function(e,t,n){var r=[];return e==null?r:g&&e.filter===g?e.filter(t,n):(C(e,function(e,i,s){t.call(n,e,i,s)&&r.push(e)}),r)},N.reject=function(e,t,n){return N.filter(e,function(e,r,i){return!t.call(n,e,r,i)},n)},N.every=N.all=function(e,t,n){t||(t=N.identity);var r=!0;return e==null?r:y&&e.every===y?e.every(t,n):(C(e,function(e,s,o){if(!(r=r&&t.call(n,e,s,o)))return i}),!!r)};var L=N.some=N.any=function(e,t,n){t||(t=N.identity);var r=!1;return e==null?r:b&&e.some===b?e.some(t,n):(C(e,function(e,s,o){if(r||(r=t.call(n,e,s,o)))return i}),!!r)};N.contains=N.include=function(e,t){return e==null?!1:w&&e.indexOf===w?e.indexOf(t)!=-1:L(e,function(e){return e===t})},N.invoke=function(e,t){var n=f.call(arguments,2),r=N.isFunction(t);return N.map(e,function(e){return(r?t:e[t]).apply(e,n)})},N.pluck=function(e,t){return N.map(e,N.property(t))},N.where=function(e,t){return N.filter(e,N.matches(t))},N.findWhere=function(e,t){return N.find(e,N.matches(t))},N.max=function(e,t,n){if(!t&&N.isArray(e)&&e[0]===+e[0]&&e.length<65535)return Math.max.apply(Math,e);var r=-Infinity,i=-Infinity;return C(e,function(e,s,o){var u=t?t.call(n,e,s,o):e;u>i&&(r=e,i=u)}),r},N.min=function(e,t,n){if(!t&&N.isArray(e)&&e[0]===+e[0]&&e.length<65535)return Math.min.apply(Math,e);var r=Infinity,i=Infinity;return C(e,function(e,s,o){var u=t?t.call(n,e,s,o):e;u<i&&(r=e,i=u)}),r},N.shuffle=function(e){var t,n=0,r=[];return C(e,function(e){t=N.random(n++),r[n-1]=r[t],r[t]=e}),r},N.sample=function(e,t,n){return t==null||n?(e.length!==+e.length&&(e=N.values(e)),e[N.random(e.length-1)]):N.shuffle(e).slice(0,Math.max(0,t))};var A=function(e){return e==null?N.identity:N.isFunction(e)?e:N.property(e)};N.sortBy=function(e,t,n){return t=A(t),N.pluck(N.map(e,function(e,r,i){return{value:e,index:r,criteria:t.call(n,e,r,i)}}).sort(function(e,t){var n=e.criteria,r=t.criteria;if(n!==r){if(n>r||n===void 0)return 1;if(n<r||r===void 0)return-1}return e.index-t.index}),"value")};var O=function(e){return function(t,n,r){var i={};return n=A(n),C(t,function(s,o){var u=n.call(r,s,o,t);e(i,u,s)}),i}};N.groupBy=O(function(e,t,n){N.has(e,t)?e[t].push(n):e[t]=[n]}),N.indexBy=O(function(e,t,n){e[t]=n}),N.countBy=O(function(e,t){N.has(e,t)?e[t]++:e[t]=1}),N.sortedIndex=function(e,t,n,r){n=A(n);var i=n.call(r,t),s=0,o=e.length;while(s<o){var u=s+o>>>1;n.call(r,e[u])<i?s=u+1:o=u}return s},N.toArray=function(e){return e?N.isArray(e)?f.call(e):e.length===+e.length?N.map(e,N.identity):N.values(e):[]},N.size=function(e){return e==null?0:e.length===+e.length?e.length:N.keys(e).length},N.first=N.head=N.take=function(e,t,n){return e==null?void 0:t==null||n?e[0]:t<0?[]:f.call(e,0,t)},N.initial=function(e,t,n){return f.call(e,0,e.length-(t==null||n?1:t))},N.last=function(e,t,n){return e==null?void 0:t==null||n?e[e.length-1]:f.call(e,Math.max(e.length-t,0))},N.rest=N.tail=N.drop=function(e,t,n){return f.call(e,t==null||n?1:t)},N.compact=function(e){return N.filter(e,N.identity)};var M=function(e,t,n){return t&&N.every(e,N.isArray)?l.apply(n,e):(C(e,function(e){N.isArray(e)||N.isArguments(e)?t?a.apply(n,e):M(e,t,n):n.push(e)}),n)};N.flatten=function(e,t){return M(e,t,[])},N.without=function(e){return N.difference(e,f.call(arguments,1))},N.partition=function(e,t){var n=[],r=[];return C(e,function(e){(t(e)?n:r).push(e)}),[n,r]},N.uniq=N.unique=function(e,t,n,r){N.isFunction(t)&&(r=n,n=t,t=!1);var i=n?N.map(e,n,r):e,s=[],o=[];return C(i,function(n,r){if(t?!r||o[o.length-1]!==n:!N.contains(o,n))o.push(n),s.push(e[r])}),s},N.union=function(){return N.uniq(N.flatten(arguments,!0))},N.intersection=function(e){var t=f.call(arguments,1);return N.filter(N.uniq(e),function(e){return N.every(t,function(t){return N.contains(t,e)})})},N.difference=function(e){var t=l.apply(s,f.call(arguments,1));return N.filter(e,function(e){return!N.contains(t,e)})},N.zip=function(){var e=N.max(N.pluck(arguments,"length").concat(0)),t=new Array(e);for(var n=0;n<e;n++)t[n]=N.pluck(arguments,""+n);return t},N.object=function(e,t){if(e==null)return{};var n={};for(var r=0,i=e.length;r<i;r++)t?n[e[r]]=t[r]:n[e[r][0]]=e[r][1];return n},N.indexOf=function(e,t,n){if(e==null)return-1;var r=0,i=e.length;if(n){if(typeof n!="number")return r=N.sortedIndex(e,t),e[r]===t?r:-1;r=n<0?Math.max(0,i+n):n}if(w&&e.indexOf===w)return e.indexOf(t,n);for(;r<i;r++)if(e[r]===t)return r;return-1},N.lastIndexOf=function(e,t,n){if(e==null)return-1;var r=n!=null;if(E&&e.lastIndexOf===E)return r?e.lastIndexOf(t,n):e.lastIndexOf(t);var i=r?n:e.length;while(i--)if(e[i]===t)return i;return-1},N.range=function(e,t,n){arguments.length<=1&&(t=e||0,e=0),n=arguments[2]||1;var r=Math.max(Math.ceil((t-e)/n),0),i=0,s=new Array(r);while(i<r)s[i++]=e,e+=n;return s};var _=function(){};N.bind=function(e,t){var n,r;if(T&&e.bind===T)return T.apply(e,f.call(arguments,1));if(!N.isFunction(e))throw new TypeError;return n=f.call(arguments,2),r=function(){if(this instanceof r){_.prototype=e.prototype;var i=new _;_.prototype=null;var s=e.apply(i,n.concat(f.call(arguments)));return Object(s)===s?s:i}return e.apply(t,n.concat(f.call(arguments)))}},N.partial=function(e){var t=f.call(arguments,1);return function(){var n=0,r=t.slice();for(var i=0,s=r.length;i<s;i++)r[i]===N&&(r[i]=arguments[n++]);while(n<arguments.length)r.push(arguments[n++]);return e.apply(this,r)}},N.bindAll=function(e){var t=f.call(arguments,1);if(t.length===0)throw new Error("bindAll must be passed function names");return C(t,function(t){e[t]=N.bind(e[t],e)}),e},N.memoize=function(e,t){var n={};return t||(t=N.identity),function(){var r=t.apply(this,arguments);return N.has(n,r)?n[r]:n[r]=e.apply(this,arguments)}},N.delay=function(e,t){var n=f.call(arguments,2);return setTimeout(function(){return e.apply(null,n)},t)},N.defer=function(e){return N.delay.apply(N,[e,1].concat(f.call(arguments,1)))},N.throttle=function(e,t,n){var r,i,s,o=null,u=0;n||(n={});var a=function(){u=n.leading===!1?0:N.now(),o=null,s=e.apply(r,i),r=i=null};return function(){var f=N.now();!u&&n.leading===!1&&(u=f);var l=t-(f-u);return r=this,i=arguments,l<=0?(clearTimeout(o),o=null,u=f,s=e.apply(r,i),r=i=null):!o&&n.trailing!==!1&&(o=setTimeout(a,l)),s}},N.debounce=function(e,t,n){var r,i,s,o,u,a=function(){var f=N.now()-o;f<t?r=setTimeout(a,t-f):(r=null,n||(u=e.apply(s,i),s=i=null))};return function(){s=this,i=arguments,o=N.now();var f=n&&!r;return r||(r=setTimeout(a,t)),f&&(u=e.apply(s,i),s=i=null),u}},N.once=function(e){var t=!1,n;return function(){return t?n:(t=!0,n=e.apply(this,arguments),e=null,n)}},N.wrap=function(e,t){return N.partial(t,e)},N.compose=function(){var e=arguments;return function(){var t=arguments;for(var n=e.length-1;n>=0;n--)t=[e[n].apply(this,t)];return t[0]}},N.after=function(e,t){return function(){if(--e<1)return t.apply(this,arguments)}},N.keys=function(e){if(!N.isObject(e))return[];if(x)return x(e);var t=[];for(var n in e)N.has(e,n)&&t.push(n);return t},N.values=function(e){var t=N.keys(e),n=t.length,r=new Array(n);for(var i=0;i<n;i++)r[i]=e[t[i]];return r},N.pairs=function(e){var t=N.keys(e),n=t.length,r=new Array(n);for(var i=0;i<n;i++)r[i]=[t[i],e[t[i]]];return r},N.invert=function(e){var t={},n=N.keys(e);for(var r=0,i=n.length;r<i;r++)t[e[n[r]]]=n[r];return t},N.functions=N.methods=function(e){var t=[];for(var n in e)N.isFunction(e[n])&&t.push(n);return t.sort()},N.extend=function(e){return C(f.call(arguments,1),function(t){if(t)for(var n in t)e[n]=t[n]}),e},N.pick=function(e){var t={},n=l.apply(s,f.call(arguments,1));return C(n,function(n){n in e&&(t[n]=e[n])}),t},N.omit=function(e){var t={},n=l.apply(s,f.call(arguments,1));for(var r in e)N.contains(n,r)||(t[r]=e[r]);return t},N.defaults=function(e){return C(f.call(arguments,1),function(t){if(t)for(var n in t)e[n]===void 0&&(e[n]=t[n])}),e},N.clone=function(e){return N.isObject(e)?N.isArray(e)?e.slice():N.extend({},e):e},N.tap=function(e,t){return t(e),e};var D=function(e,t,n,r){if(e===t)return e!==0||1/e==1/t;if(e==null||t==null)return e===t;e instanceof N&&(e=e._wrapped),t instanceof N&&(t=t._wrapped);var i=c.call(e);if(i!=c.call(t))return!1;switch(i){case"[object String]":return e==String(t);case"[object Number]":return e!=+e?t!=+t:e==0?1/e==1/t:e==+t;case"[object Date]":case"[object Boolean]":return+e==+t;case"[object RegExp]":return e.source==t.source&&e.global==t.global&&e.multiline==t.multiline&&e.ignoreCase==t.ignoreCase}if(typeof e!="object"||typeof t!="object")return!1;var s=n.length;while(s--)if(n[s]==e)return r[s]==t;var o=e.constructor,u=t.constructor;if(o!==u&&!(N.isFunction(o)&&o instanceof o&&N.isFunction(u)&&u instanceof u)&&"constructor"in e&&"constructor"in t)return!1;n.push(e),r.push(t);var a=0,f=!0;if(i=="[object Array]"){a=e.length,f=a==t.length;if(f)while(a--)if(!(f=D(e[a],t[a],n,r)))break}else{for(var l in e)if(N.has(e,l)){a++;if(!(f=N.has(t,l)&&D(e[l],t[l],n,r)))break}if(f){for(l in t)if(N.has(t,l)&&!(a--))break;f=!a}}return n.pop(),r.pop(),f};N.isEqual=function(e,t){return D(e,t,[],[])},N.isEmpty=function(e){if(e==null)return!0;if(N.isArray(e)||N.isString(e))return e.length===0;for(var t in e)if(N.has(e,t))return!1;return!0},N.isElement=function(e){return!!e&&e.nodeType===1},N.isArray=S||function(e){return c.call(e)=="[object Array]"},N.isObject=function(e){return e===Object(e)},C(["Arguments","Function","String","Number","Date","RegExp"],function(e){N["is"+e]=function(t){return c.call(t)=="[object "+e+"]"}}),N.isArguments(arguments)||(N.isArguments=function(e){return!!e&&!!N.has(e,"callee")}),typeof /./!="function"&&(N.isFunction=function(e){return typeof e=="function"}),N.isFinite=function(e){return isFinite(e)&&!isNaN(parseFloat(e))},N.isNaN=function(e){return N.isNumber(e)&&e!=+e},N.isBoolean=function(e){return e===!0||e===!1||c.call(e)=="[object Boolean]"},N.isNull=function(e){return e===null},N.isUndefined=function(e){return e===void 0},N.has=function(e,t){return h.call(e,t)},N.noConflict=function(){return e._=r,this},N.identity=function(e){return e},N.constant=function(e){return function(){return e}},N.property=function(e){return function(t){return t[e]}},N.matches=function(e){return function(t){if(t===e)return!0;for(var n in e)if(e[n]!==t[n])return!1;return!0}},N.times=function(e,t,n){var r=Array(Math.max(0,e));for(var i=0;i<e;i++)r[i]=t.call(n,i);return r},N.random=function(e,t){return t==null&&(t=e,e=0),e+Math.floor(Math.random()*(t-e+1))},N.now=Date.now||function(){return(new Date).getTime()};var P={escape:{"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#x27;"}};P.unescape=N.invert(P.escape);var H={escape:new RegExp("["+N.keys(P.escape).join("")+"]","g"),unescape:new RegExp("("+N.keys(P.unescape).join("|")+")","g")};N.each(["escape","unescape"],function(e){N[e]=function(t){return t==null?"":(""+t).replace(H[e],function(t){return P[e][t]})}}),N.result=function(e,t){if(e==null)return void 0;var n=e[t];return N.isFunction(n)?n.call(e):n},N.mixin=function(e){C(N.functions(e),function(t){var n=N[t]=e[t];N.prototype[t]=function(){var e=[this._wrapped];return a.apply(e,arguments),q.call(this,n.apply(N,e))}})};var B=0;N.uniqueId=function(e){var t=++B+"";return e?e+t:t},N.templateSettings={evaluate:/<%([\s\S]+?)%>/g,interpolate:/<%=([\s\S]+?)%>/g,escape:/<%-([\s\S]+?)%>/g};var j=/(.)^/,F={"'":"'","\\":"\\","\r":"r","\n":"n","	":"t","\u2028":"u2028","\u2029":"u2029"},I=/\\|'|\r|\n|\t|\u2028|\u2029/g;N.template=function(e,t,n){var r;n=N.defaults({},n,N.templateSettings);var i=new RegExp([(n.escape||j).source,(n.interpolate||j).source,(n.evaluate||j).source].join("|")+"|$","g"),s=0,o="__p+='";e.replace(i,function(t,n,r,i,u){return o+=e.slice(s,u).replace(I,function(e){return"\\"+F[e]}),n&&(o+="'+\n((__t=("+n+"))==null?'':_.escape(__t))+\n'"),r&&(o+="'+\n((__t=("+r+"))==null?'':__t)+\n'"),i&&(o+="';\n"+i+"\n__p+='"),s=u+t.length,t}),o+="';\n",n.variable||(o="with(obj||{}){\n"+o+"}\n"),o="var __t,__p='',__j=Array.prototype.join,print=function(){__p+=__j.call(arguments,'');};\n"+o+"return __p;\n";try{r=new Function(n.variable||"obj","_",o)}catch(u){throw u.source=o,u}if(t)return r(t,N);var a=function(e){return r.call(this,e,N)};return a.source="function("+(n.variable||"obj")+"){\n"+o+"}",a},N.chain=function(e){return N(e).chain()};var q=function(e){return this._chain?N(e).chain():e};N.mixin(N),C(["pop","push","reverse","shift","sort","splice","unshift"],function(e){var t=s[e];N.prototype[e]=function(){var n=this._wrapped;return t.apply(n,arguments),(e=="shift"||e=="splice")&&n.length===0&&delete n[0],q.call(this,n)}}),C(["concat","join","slice"],function(e){var t=s[e];N.prototype[e]=function(){return q.call(this,t.apply(this._wrapped,arguments))}}),N.extend(N.prototype,{chain:function(){return this._chain=!0,this},value:function(){return this._wrapped}}),typeof define=="function"&&define.amd&&ace.define("underscore",[],function(){return N})}).call(this)},{}],3:[function(e,t,n){var r=e("underscore"),i=e("events"),s=e("./vars.js"),o=e("./messages.js"),u=e("./lex.js").Lexer,a=e("./reg.js"),f=e("./state.js").state,l=e("./style.js"),c=function(){"use strict";function I(e,t){return e=e.trim(),/^[+-]W\d{3}$/g.test(e)?!0:p[e]===undefined&&h[e]===undefined&&t.type!=="jslint"&&!m[e]?(G("E001",t,e),!1):!0}function q(e){return Object.prototype.toString.call(e)==="[object String]"}function R(e,t){return e?!e.identifier||e.value!==t?!1:!0:!1}function U(e){if(!e.reserved)return!1;var t=e.meta;if(t&&t.isFutureReservedWord&&f.option.inES5()){if(!t.es5)return!1;if(t.strictOnly&&!f.option.strict&&!f.directive["use strict"])return!1;if(e.isProperty)return!1}return!0}function z(e,t){return e.replace(/\{([^{}]*)\}/g,function(e,n){var r=t[n];return typeof r=="string"||typeof r=="number"?r:e})}function W(e,t){Object.keys(t).forEach(function(n){if(r.has(c.blacklist,n))return;e[n]=t[n]})}function X(){f.option.esnext&&W(M,s.newEcmaIdentifiers),f.option.couch&&W(M,s.couch),f.option.qunit&&W(M,s.qunit),f.option.rhino&&W(M,s.rhino),f.option.shelljs&&(W(M,s.shelljs),W(M,s.node)),f.option.typed&&W(M,s.typed),f.option.phantom&&W(M,s.phantom),f.option.prototypejs&&W(M,s.prototypejs),f.option.node&&(W(M,s.node),W(M,s.typed)),f.option.devel&&W(M,s.devel),f.option.dojo&&W(M,s.dojo),f.option.browser&&(W(M,s.browser),W(M,s.typed)),f.option.nonstandard&&W(M,s.nonstandard),f.option.jasmine&&W(M,s.jasmine),f.option.jquery&&W(M,s.jquery),f.option.mootools&&W(M,s.mootools),f.option.worker&&W(M,s.worker),f.option.wsh&&W(M,s.wsh),f.option.globalstrict&&f.option.strict!==!1&&(f.option.strict=!0),f.option.yui&&W(M,s.yui),f.option.mocha&&W(M,s.mocha),f.option.inMoz=function(e){return f.option.moz},f.option.inESNext=function(e){return f.option.moz||f.option.esnext},f.option.inES5=function(){return!f.option.es3},f.option.inES3=function(e){return e?!f.option.moz&&!f.option.esnext&&f.option.es3:f.option.es3}}function V(e,t,n){var r=Math.floor(t/f.lines.length*100),i=o.errors[e].desc;throw{name:"JSHintError",line:t,character:n,message:i+" ("+r+"% scanned).",raw:i,code:e}}function $(e,t,n,r){return c.undefs.push([e,t,n,r])}function J(){var e=f.ignoredLines;if(r.isEmpty(e))return;c.errors=r.reject(c.errors,function(t){return e[t.line]})}function K(e,t,n,r,i,s){var u,a,l,h;if(/^W\d{3}$/.test(e)){if(f.ignored[e])return;h=o.warnings[e]}else/E\d{3}/.test(e)?h=o.errors[e]:/I\d{3}/.test(e)&&(h=o.info[e]);return t=t||f.tokens.next,t.id==="(end)"&&(t=f.tokens.curr),a=t.line||0,u=t.from||0,l={id:"(error)",raw:h.desc,code:h.code,evidence:f.lines[a-1]||"",line:a,character:u,scope:c.scope,a:n,b:r,c:i,d:s},l.reason=z(h.desc,l),c.errors.push(l),J(),c.errors.length>=f.option.maxerr&&V("E043",a,u),l}function Q(e,t,n,r,i,s,o){return K(e,{line:t,from:n},r,i,s,o)}function G(e,t,n,r,i,s){K(e,t,n,r,i,s)}function Y(e,t,n,r,i,s,o){return G(e,{line:t,from:n},r,i,s,o)}function Z(e,t){var n;return n={id:"(internal)",elem:e,value:t},c.internals.push(n),n}function et(e,t){t=t||{};var n=t.type,i=t.token,s=t.islet;n==="exception"&&r.has(w["(context)"],e)&&w[e]!==!0&&!f.option.node&&K("W002",f.tokens.next,e),r.has(w,e)&&!w["(global)"]&&(w[e]===!0?f.option.latedef&&(f.option.latedef===!0&&r.contains([w[e],n],"unction")||!r.contains([w[e],n],"unction"))&&K("W003",f.tokens.next,e):((!f.option.shadow||r.contains(["inner","outer"],f.option.shadow))&&n!=="exception"||w["(blockscope)"].getlabel(e))&&K("W004",f.tokens.next,e)),w["(context)"]&&r.has(w["(context)"],e)&&n!=="function"&&f.option.shadow==="outer"&&K("W123",f.tokens.next,e),s?w["(blockscope)"].current.add(e,n,f.tokens.curr):(w["(blockscope)"].shadow(e),w[e]=n,i&&(w["(tokens)"][e]=i),Xt(w,e,{unused:t.unused||!1}),w["(global)"]?(S[e]=w,r.has(x,e)&&(f.option.latedef&&(f.option.latedef===!0&&r.contains([w[e],n],"unction")||!r.contains([w[e],n],"unction"))&&K("W003",f.tokens.next,e),delete x[e])):D[e]=w)}function tt(){var e=f.tokens.next,t=e.body.match(/(-\s+)?[^\s,:]+(?:\s*:\s*(-\s+)?[^\s,]+)?/g)||[],n={};if(e.type==="globals"){t.forEach(function(e){e=e.split(":");var t=(e[0]||"").trim(),r=(e[1]||"").trim();t.charAt(0)==="-"?(t=t.slice(1),r=!1,c.blacklist[t]=t,delete M[t]):n[t]=r==="true"}),W(M,n);for(var i in n)r.has(n,i)&&(g[i]=e)}e.type==="exported"&&t.forEach(function(e){y[e]=!0}),e.type==="members"&&(A=A||{},t.forEach(function(e){var t=e.charAt(0),n=e.charAt(e.length-1);t===n&&(t==='"'||t==="'")&&(e=e.substr(1,e.length-2).replace('\\"','"')),A[e]=!1}));var s=["maxstatements","maxparams","maxdepth","maxcomplexity","maxerr","maxlen","indent"];if(e.type==="jshint"||e.type==="jslint")t.forEach(function(t){t=t.split(":");var n=(t[0]||"").trim(),r=(t[1]||"").trim();if(!I(n,e))return;if(s.indexOf(n)>=0){if(r!=="false"){r=+r;if(typeof r!="number"||!isFinite(r)||r<=0||Math.floor(r)!==r){G("E032",e,t[1].trim());return}f.option[n]=r}else f.option[n]=n==="indent"?4:!1;return}if(n==="validthis"){if(w["(global)"])return void G("E009");if(r!=="true"&&r!=="false")return void G("E002",e);f.option.validthis=r==="true";return}if(n==="quotmark"){switch(r){case"true":case"false":f.option.quotmark=r==="true";break;case"double":case"single":f.option.quotmark=r;break;default:G("E002",e)}return}if(n==="shadow"){switch(r){case"true":f.option.shadow=!0;break;case"outer":f.option.shadow="outer";break;case"false":case"inner":f.option.shadow="inner";break;default:G("E002",e)}return}if(n==="unused"){switch(r){case"true":f.option.unused=!0;break;case"false":f.option.unused=!1;break;case"vars":case"strict":f.option.unused=r;break;default:G("E002",e)}return}if(n==="latedef"){switch(r){case"true":f.option.latedef=!0;break;case"false":f.option.latedef=!1;break;case"nofunc":f.option.latedef="nofunc";break;default:G("E002",e)}return}if(n==="ignore"){switch(r){case"start":f.ignoreLinterErrors=!0;break;case"end":f.ignoreLinterErrors=!1;break;case"line":f.ignoredLines[e.line]=!0,J();break;default:G("E002",e)}return}var i=/^([+-])(W\d{3})$/g.exec(n);if(i){f.ignored[i[2]]=i[1]==="-";return}var o;if(r==="true"||r==="false"){e.type==="jslint"?(o=v[n]||n,f.option[o]=r==="true",d[o]!==undefined&&(f.option[o]=!f.option[o])):f.option[n]=r==="true",n==="newcap"&&(f.option["(explicitNewcap)"]=!0);return}G("E002",e)}),X()}function nt(e){var t=e||0,n=0,r;while(n<=t)r=C[n],r||(r=C[n]=k.token()),n+=1;return r}function rt(t,n){switch(f.tokens.curr.id){case"(number)":f.tokens.next.id==="."&&K("W005",f.tokens.curr);break;case"-":(f.tokens.next.id==="-"||f.tokens.next.id==="--")&&K("W006");break;case"+":(f.tokens.next.id==="+"||f.tokens.next.id==="++")&&K("W007")}if(f.tokens.curr.type==="(string)"||f.tokens.curr.identifier)e=f.tokens.curr.value;t&&f.tokens.next.id!==t&&(n?f.tokens.next.id==="(end)"?G("E019",n,n.id):G("E020",f.tokens.next,t,n.id,n.line,f.tokens.next.value):(f.tokens.next.type!=="(identifier)"||f.tokens.next.value!==t)&&K("W116",f.tokens.next,t,f.tokens.next.value)),f.tokens.prev=f.tokens.curr,f.tokens.curr=f.tokens.next;for(;;){f.tokens.next=C.shift()||k.token(),f.tokens.next||V("E041",f.tokens.curr.line);if(f.tokens.next.id==="(end)"||f.tokens.next.id==="(error)")return;f.tokens.next.check&&f.tokens.next.check();if(f.tokens.next.isSpecial)tt();else if(f.tokens.next.id!=="(endline)")break}}function it(e){return e.infix||!e.identifier&&!!e.led}function st(){var e=f.tokens.curr,t=f.tokens.next;return t.id===";"||t.id==="}"||t.id===":"?!0:it(t)===it(e)||e.id==="yield"&&f.option.inMoz(!0)?e.line!==t.line:!1}function ot(t,n){var i,s=!1,o=!1,u=!1;!n&&f.tokens.next.value==="let"&&nt(0).value==="("&&(f.option.inMoz(!0)||K("W118",f.tokens.next,"let expressions"),u=!0,w["(blockscope)"].stack(),rt("let"),rt("("),f.syntax.let.fud.call(f.syntax.let.fud,!1),rt(")")),f.tokens.next.id==="(end)"&&G("E006",f.tokens.curr);var a=f.option.asi&&f.tokens.prev.line<f.tokens.curr.line&&r.contains(["]",")"],f.tokens.prev.id)&&r.contains(["[","("],f.tokens.curr.id);a&&K("W014",f.tokens.curr,f.tokens.curr.id),rt(),n&&(e="anonymous",w["(verb)"]=f.tokens.curr.value);if(n===!0&&f.tokens.curr.fud)i=f.tokens.curr.fud();else{f.tokens.curr.nud?i=f.tokens.curr.nud():G("E030",f.tokens.curr,f.tokens.curr.id);while(t<f.tokens.next.lbp&&!st())s=f.tokens.curr.value==="Array",o=f.tokens.curr.value==="Object",i&&(i.value||i.first&&i.first.value)&&(i.value!=="new"||i.first&&i.first.value&&i.first.value===".")&&(s=!1,i.value!==f.tokens.curr.value&&(o=!1)),rt(),s&&f.tokens.curr.id==="("&&f.tokens.next.id===")"&&K("W009",f.tokens.curr),o&&f.tokens.curr.id==="("&&f.tokens.next.id===")"&&K("W010",f.tokens.curr),i&&f.tokens.curr.led?i=f.tokens.curr.led(i):G("E033",f.tokens.curr,f.tokens.curr.id)}return u&&w["(blockscope)"].unstack(),i}function ut(e,t){e=e||f.tokens.curr,t=t||f.tokens.next,!f.option.laxbreak&&e.line!==t.line&&K("W014",t,t.value)}function at(e){e=e||f.tokens.curr,e.line!==f.tokens.next.line&&K("E022",e,e.value)}function ft(e,t){e.line!==t.line&&(f.option.laxcomma||(lt.first&&(K("I001"),lt.first=!1),K("W014",e,t.value)))}function lt(e){e=e||{},e.peek?ft(f.tokens.prev,f.tokens.curr):(ft(f.tokens.curr,f.tokens.next),rt(","));if(f.tokens.next.identifier&&(!e.property||!f.option.inES5()))switch(f.tokens.next.value){case"break":case"case":case"catch":case"continue":case"default":case"do":case"else":case"finally":case"for":case"if":case"in":case"instanceof":case"return":case"switch":case"throw":case"try":case"var":case"let":case"while":case"with":return G("E024",f.tokens.next,f.tokens.next.value),!1}if(f.tokens.next.type==="(punctuator)")switch(f.tokens.next.value){case"}":case"]":case",":if(e.allowTrailing)return!0;case")":return G("E024",f.tokens.next,f.tokens.next.value),!1}return!0}function ct(e,t){var n=f.syntax[e];if(!n||typeof n!="object")f.syntax[e]=n={id:e,lbp:t,value:e};return n}function ht(e){return ct(e,0)}function pt(e,t){var n=ht(e);return n.identifier=n.reserved=!0,n.fud=t,n}function dt(e,t){var n=pt(e,t);return n.block=!0,n}function vt(e){var t=e.id.charAt(0);if(t>="a"&&t<="z"||t>="A"&&t<="Z")e.identifier=e.reserved=!0;return e}function mt(e,t){var n=ct(e,150);return vt(n),n.nud=typeof t=="function"?t:function(){this.right=ot(150),this.arity="unary";if(this.id==="++"||this.id==="--")f.option.plusplus?K("W016",this,this.id):this.right&&(!this.right.identifier||U(this.right))&&this.right.id!=="."&&this.right.id!=="["&&K("W017",this);return this},n}function gt(e,t){var n=ht(e);return n.type=e,n.nud=t,n}function yt(e,t){var n=gt(e,t);return n.identifier=!0,n.reserved=!0,n}function bt(e,t){var n=gt(e,t&&t.nud||function(){return this});return t=t||{},t.isFutureReservedWord=!0,n.value=e,n.identifier=!0,n.reserved=!0,n.meta=t,n}function wt(e,t){return yt(e,function(){return typeof t=="function"&&t(this),this})}function Et(e,t,n,r){var i=ct(e,n);return vt(i),i.infix=!0,i.led=function(i){return r||ut(f.tokens.prev,f.tokens.curr),e==="in"&&i.id==="!"&&K("W018",i,"!"),typeof t=="function"?t(i,this):(this.left=i,this.right=ot(n),this)},i}function St(e){var t=ct(e,42);return t.led=function(e){return f.option.inESNext()||K("W104",f.tokens.curr,"arrow function syntax (=>)"),ut(f.tokens.prev,f.tokens.curr),this.left=e,this.right=Jt(undefined,undefined,!1,e),this},t}function xt(e,t){var n=ct(e,100);return n.led=function(e){ut(f.tokens.prev,f.tokens.curr);var n=ot(100);return R(e,"NaN")||R(n,"NaN")?K("W019",this):t&&t.apply(this,[e,n]),(!e||!n)&&V("E041",f.tokens.curr.line),e.id==="!"&&K("W018",e,"!"),n.id==="!"&&K("W018",n,"!"),this.left=e,this.right=n,this},n}function Tt(e){return e&&(e.type==="(number)"&&+e.value===0||e.type==="(string)"&&e.value===""||e.type==="null"&&!f.option.eqnull||e.type==="true"||e.type==="false"||e.type==="undefined")}function Nt(e,t){if(f.option.notypeof)return!1;if(!e||!t)return!1;var n=["undefined","object","boolean","number","string","function","xml","object","unknown"];return t.type==="(identifier)"&&t.value==="typeof"&&e.type==="(string)"?!r.contains(n,e.value):!1}function Ct(e){function n(e){if(typeof e!="object")return;return e.right==="prototype"?e:n(e.left)}function r(e){while(!e.identifier&&typeof e.left=="object")e=e.left;if(e.identifier&&t.indexOf(e.value)>=0)return e.value}var t=["Array","ArrayBuffer","Boolean","Collator","DataView","Date","DateTimeFormat","Error","EvalError","Float32Array","Float64Array","Function","Infinity","Intl","Int16Array","Int32Array","Int8Array","Iterator","Number","NumberFormat","Object","RangeError","ReferenceError","RegExp","StopIteration","String","SyntaxError","TypeError","Uint16Array","Uint32Array","Uint8Array","Uint8ClampedArray","URIError"],i=n(e);if(i)return r(i)}function kt(e,t,n){var r=Et(e,typeof t=="function"?t:function(e,t){t.left=e;if(e){if(f.option.freeze){var n=Ct(e);n&&K("W121",e,n)}M[e.value]===!1&&D[e.value]["(global)"]===!0?K("W020",e):e["function"]&&K("W021",e,e.value),w[e.value]==="const"&&G("E013",e,e.value);if(e.id===".")return e.left?e.left.value==="arguments"&&!f.directive["use strict"]&&K("E031",t):K("E031",t),t.right=ot(10),t;if(e.id==="[")return f.tokens.curr.left.first?f.tokens.curr.left.first.forEach(function(e){e&&w[e.value]==="const"&&G("E013",e,e.value)}):e.left?e.left.value==="arguments"&&!f.directive["use strict"]&&K("E031",t):K("E031",t),t.right=ot(10),t;if(e.identifier&&!U(e))return w[e.value]==="exception"&&K("W022",e),t.right=ot(10),t;e===f.syntax["function"]&&K("W023",f.tokens.curr)}G("E031",t)},n);return r.exps=!0,r.assign=!0,r}function Lt(e,t,n){var r=ct(e,n);return vt(r),r.led=typeof t=="function"?t:function(e){return f.option.bitwise&&K("W016",this,this.id),this.left=e,this.right=ot(n),this},r}function At(e){return kt(e,function(e,t){f.option.bitwise&&K("W016",t,t.id);if(e)return e.id==="."||e.id==="["||e.identifier&&!U(e)?(ot(10),t):(e===f.syntax["function"]&&K("W023",f.tokens.curr),t);G("E031",t)},20)}function Ot(e){var t=ct(e,150);return t.led=function(e){return f.option.plusplus?K("W016",this,this.id):(!e.identifier||U(e))&&e.id!=="."&&e.id!=="["&&K("W017",this),this.left=e,this},t}function Mt(e,t){if(!f.tokens.next.identifier)return;rt();var n=f.tokens.curr,r=f.tokens.curr.value;return U(n)?t&&f.option.inES5()?r:e&&r==="undefined"?r:(K("W024",f.tokens.curr,f.tokens.curr.id),r):r}function _t(e,t){var n=Mt(e,t);if(n)return n;f.tokens.curr.id==="function"&&f.tokens.next.id==="("?K("W025"):G("E030",f.tokens.next,f.tokens.next.value)}function Dt(e){var t=0,n;if(f.tokens.next.id!==";"||O)return;for(;;){do n=nt(t),t+=1;while(n.id!="(end)"&&n.id==="(comment)");if(n.reach)return;if(n.id!=="(endline)"){if(n.id==="function"){f.option.latedef===!0&&K("W026",n);break}K("W027",n,n.value,e);break}}}function Pt(){f.tokens.next.id!==";"?f.option.asi||(!f.option.lastsemic||f.tokens.next.id!=="}"||f.tokens.next.line!==f.tokens.curr.line)&&Q("W033",f.tokens.curr.line,f.tokens.curr.character):rt(";")}function Ht(){var e,t=N,n,i=D,s=f.tokens.next;if(s.id===";"){rt(";");return}var o=U(s);o&&s.meta&&s.meta.isFutureReservedWord&&nt().id===":"&&(K("W024",s,s.id),o=!1);if(s.value==="module"&&s.type==="(identifier)"&&nt().type==="(identifier)"){f.option.inESNext()||K("W119",f.tokens.curr,"module"),rt("module");var u=_t();et(u,{type:"unused",token:f.tokens.curr}),rt("from"),rt("(string)"),Pt();return}if(r.has(["[","{"],s.value)&&on().isDestAssign){f.option.inESNext()||K("W104",f.tokens.curr,"destructuring expression"),e=Yt(),e.forEach(function(e){$(w,"W117",e.token,e.id)}),rt("="),Zt(e,ot(10,!0)),rt(";");return}s.identifier&&!o&&nt().id===":"&&(rt(),rt(":"),D=Object.create(i),et(s.value,{type:"label"}),!f.tokens.next.labelled&&f.tokens.next.value!=="{"&&K("W028",f.tokens.next,s.value,f.tokens.next.value),f.tokens.next.label=s.value,s=f.tokens.next);if(s.id==="{"){var a=w["(verb)"]==="case"&&f.tokens.curr.value===":";Ft(!0,!0,!1,!1,a);return}return n=ot(0,!0),n&&(!n.identifier||n.value!=="function")&&n.type!=="(punctuator)"&&!f.directive["use strict"]&&f.option.globalstrict&&f.option.strict&&K("E007"),s.block||(!f.option.expr&&(!n||!n.exps)?K("W030",f.tokens.curr):f.option.nonew&&n&&n.left&&n.id==="("&&n.left.id==="new"&&K("W031",s),Pt()),N=t,D=i,n}function Bt(e){var t=[],n;while(!f.tokens.next.reach&&f.tokens.next.id!=="(end)")f.tokens.next.id===";"?(n=nt(),(!n||n.id!=="("&&n.id!=="[")&&K("W032"),rt(";")):t.push(Ht(e===f.tokens.next.line));return t}function jt(){var e,t,n;for(;;){if(f.tokens.next.id==="(string)"){t=nt(0);if(t.id==="(endline)"){e=1;do n=nt(e),e+=1;while(n.id==="(endline)");if(n.id!==";"){if(n.id!=="(string)"&&n.id!=="(number)"&&n.id!=="(regexp)"&&n.identifier!==!0&&n.id!=="}")break;K("W033",f.tokens.next)}else t=n}else if(t.id==="}")K("W033",t);else if(t.id!==";")break;rt(),f.directive[f.tokens.curr.value]&&K("W034",f.tokens.curr,f.tokens.curr.value),f.tokens.curr.value==="use strict"&&(f.option["(explicitNewcap)"]||(f.option.newcap=!0),f.option.undef=!0),f.directive[f.tokens.curr.value]=!0,t.id===";"&&rt(";");continue}break}}function Ft(e,t,n,i,s){var o,u=T,a=N,l,c=D,h,p,d;T=e;if(!e||!f.option.funcscope)D=Object.create(D);h=f.tokens.next;var v=w["(metrics)"];v.nestedBlockDepth+=1,v.verifyMaxNestedBlockDepthPerFunction();if(f.tokens.next.id==="{"){rt("{"),w["(blockscope)"].stack(),p=f.tokens.curr.line;if(f.tokens.next.id!=="}"){N+=f.option.indent;while(!e&&f.tokens.next.from>N)N+=f.option.indent;if(n){l={};for(d in f.directive)r.has(f.directive,d)&&(l[d]=f.directive[d]);jt(),f.option.strict&&w["(context)"]["(global)"]&&!l["use strict"]&&!f.directive["use strict"]&&K("E007")}o=Bt(p),v.statementCount+=o.length,n&&(f.directive=l),N-=f.option.indent}rt("}",h),w["(blockscope)"].unstack(),N=a}else if(!e)if(n){l={},t&&!i&&!f.option.inMoz(!0)&&G("W118",f.tokens.curr,"function closure expressions");if(!t)for(d in f.directive)r.has(f.directive,d)&&(l[d]=f.directive[d]);ot(10),f.option.strict&&w["(context)"]["(global)"]&&!l["use strict"]&&!f.directive["use strict"]&&K("E007")}else G("E021",f.tokens.next,"{",f.tokens.next.value);else w["(nolet)"]=!0,(!t||f.option.curly)&&K("W116",f.tokens.next,"{",f.tokens.next.value),O=!0,N+=f.option.indent,o=[Ht()],N-=f.option.indent,O=!1,delete w["(nolet)"];switch(w["(verb)"]){case"break":case"continue":case"return":case"throw":if(s)break;default:w["(verb)"]=null}if(!e||!f.option.funcscope)D=c;return T=u,e&&f.option.noempty&&(!o||o.length===0)&&K("W035"),v.nestedBlockDepth-=1,o}function It(e){A&&typeof A[e]!="boolean"&&K("W036",f.tokens.curr,e),typeof L[e]=="number"?L[e]+=1:L[e]=1}function qt(e){var t=e.value,n=Object.getOwnPropertyDescriptor(x,t);n?n.value.push(e.line):x[t]=[e.line]}function Ut(){var e={};e.exps=!0,w["(comparray)"].stack();var t=!1;return f.tokens.next.value!=="for"&&(t=!0,f.option.inMoz(!0)||K("W116",f.tokens.next,"for",f.tokens.next.value),w["(comparray)"].setState("use"),e.right=ot(10)),rt("for"),f.tokens.next.value==="each"&&(rt("each"),f.option.inMoz(!0)||K("W118",f.tokens.curr,"for each")),rt("("),w["(comparray)"].setState("define"),e.left=ot(130),r.contains(["in","of"],f.tokens.next.value)?rt():G("E045",f.tokens.curr),w["(comparray)"].setState("generate"),ot(10),rt(")"),f.tokens.next.value==="if"&&(rt("if"),rt("("),w["(comparray)"].setState("filter"),e.filter=ot(10),rt(")")),t||(w["(comparray)"].setState("use"),e.right=ot(10)),rt("]"),w["(comparray)"].unstack(),e}function zt(){var e=Mt(!1,!0);return e||(f.tokens.next.id==="(string)"?(e=f.tokens.next.value,rt()):f.tokens.next.id==="(number)"&&(e=f.tokens.next.value.toString(),rt())),e==="hasOwnProperty"&&K("W001"),e}function Wt(e){var t,n,i=[],s,o=[],u,a=!1;if(e){if(Array.isArray(e)){for(var l in e){t=e[l];if(t.value==="..."){f.option.inESNext()||K("W104",t,"spread/rest operator");continue}t.value!==","&&(i.push(t.value),et(t.value,{type:"unused",token:t}))}return i}if(e.identifier===!0)return et(e.value,{type:"unused",token:e}),[e]}n=f.tokens.next,rt("(");if(f.tokens.next.id===")"){rt(")");return}for(;;){if(r.contains(["{","["],f.tokens.next.id)){o=Yt();for(u in o)u=o[u],u.id&&(i.push(u.id),et(u.id,{type:"unused",token:u.token}))}else f.tokens.next.value==="..."?(f.option.inESNext()||K("W104",f.tokens.next,"spread/rest operator"),rt("..."),s=_t(!0),i.push(s),et(s,{type:"unused",token:f.tokens.curr})):(s=_t(!0),i.push(s),et(s,{type:"unused",token:f.tokens.curr}));a&&f.tokens.next.id!=="="&&G("E051",f.tokens.current),f.tokens.next.id==="="&&(f.option.inESNext()||K("W119",f.tokens.next,"default parameters"),rt("="),a=!0,ot(10));if(f.tokens.next.id!==",")return rt(")",n),i;lt()}}function Xt(e,t,n){e["(properties)"][t]||(e["(properties)"][t]={unused:!1}),r.extend(e["(properties)"][t],n)}function Vt(e,t,n){return e["(properties)"][t]?e["(properties)"][t][n]||null:null}function $t(e,t,n,i){var s={"(name)":e,"(breakage)":0,"(loopage)":0,"(scope)":n,"(tokens)":{},"(properties)":{},"(catch)":!1,"(global)":!1,"(line)":null,"(character)":null,"(metrics)":null,"(statement)":null,"(context)":null,"(blockscope)":null,"(comparray)":null,"(generator)":null,"(params)":null};return t&&r.extend(s,{"(line)":t.line,"(character)":t.character,"(metrics)":Kt(t)}),r.extend(s,i),s["(context)"]&&(s["(blockscope)"]=s["(context)"]["(blockscope)"],s["(comparray)"]=s["(context)"]["(comparray)"]),s}function Jt(t,n,i,s){var o,u=f.option,a=f.ignored,l=D;return f.option=Object.create(f.option),f.ignored=Object.create(f.ignored),D=Object.create(D),w=$t(t||'"'+e+'"',f.tokens.next,D,{"(statement)":n,"(context)":w,"(generator)":i?!0:null}),o=w,f.tokens.curr.funct=w,E.push(w),t&&et(t,{type:"function"}),w["(params)"]=Wt(s),w["(metrics)"].verifyMaxParametersPerFunction(w["(params)"]),c.undefs=r.filter(c.undefs,function(e){return!r.contains(r.union(s),e[2])}),Ft(!1,!0,!0,s?!0:!1),!f.option.noyield&&i&&w["(generator)"]!=="yielded"&&K("W124",f.tokens.curr),w["(metrics)"].verifyMaxStatementsPerFunction(),w["(metrics)"].verifyMaxComplexityPerFunction(),w["(unusedOption)"]=f.option.unused,D=l,f.option=u,f.ignored=a,w["(last)"]=f.tokens.curr.line,w["(lastcharacter)"]=f.tokens.curr.character,r.map(Object.keys(w),function(e){if(e[0]==="(")return;w["(blockscope)"].unshadow(e)}),w=w["(context)"],o}function Kt(e){return{statementCount:0,nestedBlockDepth:-1,ComplexityCount:1,verifyMaxStatementsPerFunction:function(){f.option.maxstatements&&this.statementCount>f.option.maxstatements&&K("W071",e,this.statementCount)},verifyMaxParametersPerFunction:function(t){t=t||[],f.option.maxparams&&t.length>f.option.maxparams&&K("W072",e,t.length)},verifyMaxNestedBlockDepthPerFunction:function(){f.option.maxdepth&&this.nestedBlockDepth>0&&this.nestedBlockDepth===f.option.maxdepth+1&&K("W073",null,this.nestedBlockDepth)},verifyMaxComplexityPerFunction:function(){var t=f.option.maxcomplexity,n=this.ComplexityCount;t&&n>t&&K("W074",e,n)}}}function Qt(){w["(metrics)"].ComplexityCount+=1}function Gt(e){var t,n;e&&(t=e.id,n=e.paren,t===","&&(e=e.exprs[e.exprs.length-1])&&(t=e.id,n=n||e.paren));switch(t){case"=":case"+=":case"-=":case"*=":case"%=":case"&=":case"|=":case"^=":case"/=":!n&&!f.option.boss&&K("W084")}}function Yt(){var e,t,n=[];f.option.inESNext()||K("W104",f.tokens.curr,"destructuring expression");var i=function(){var e;if(r.contains(["[","{"],f.tokens.next.value)){t=Yt();for(var s in t)s=t[s],n.push({id:s.id,token:s.token})}else f.tokens.next.value===","?n.push({id:null,token:f.tokens.curr}):f.tokens.next.value==="("?(rt("("),i(),rt(")")):(e=_t(),e&&n.push({id:e,token:f.tokens.curr}))};if(f.tokens.next.value==="["){rt("["),i();while(f.tokens.next.value!=="]")rt(","),i();rt("]")}else if(f.tokens.next.value==="{"){rt("{"),e=_t(),f.tokens.next.value===":"?(rt(":"),i()):n.push({id:e,token:f.tokens.curr});while(f.tokens.next.value!=="}")rt(","),e=_t(),f.tokens.next.value===":"?(rt(":"),i()):n.push({id:e,token:f.tokens.curr});rt("}")}return n}function Zt(e,t){var n=t.first;if(!n)return;r.zip(e,Array.isArray(n)?n:[n]).forEach(function(e){var t=e[0],n=e[1];t&&n?t.first=n:t&&t.first&&!n&&K("W080",t.first,t.first.value)})}function rn(e){return f.option.inESNext()||K("W104",f.tokens.curr,"class"),e?(this.name=_t(),et(this.name,{type:"unused",token:f.tokens.curr})):f.tokens.next.identifier&&f.tokens.next.value!=="extends"&&(this.name=_t()),sn(this),this}function sn(e){var t=f.directive["use strict"];f.tokens.next.value==="extends"&&(rt("extends"),e.heritage=ot(10)),f.directive["use strict"]=!0,rt("{"),e.body=f.syntax["{"].nud(!0),f.directive["use strict"]=t}function un(){var e=on();e.notJson?(!f.option.inESNext()&&e.isDestAssign&&K("W104",f.tokens.curr,"destructuring assignment"),Bt()):(f.option.laxbreak=!0,f.jsonMode=!0,fn())}function fn(){function e(){var e={},t=f.tokens.next;rt("{");if(f.tokens.next.id!=="}")for(;;){if(f.tokens.next.id==="(end)")G("E026",f.tokens.next,t.line);else{if(f.tokens.next.id==="}"){K("W094",f.tokens.curr);break}f.tokens.next.id===","?G("E028",f.tokens.next):f.tokens.next.id!=="(string)"&&K("W095",f.tokens.next,f.tokens.next.value)}e[f.tokens.next.value]===!0?K("W075",f.tokens.next,f.tokens.next.value):f.tokens.next.value==="__proto__"&&!f.option.proto||f.tokens.next.value==="__iterator__"&&!f.option.iterator?K("W096",f.tokens.next,f.tokens.next.value):e[f.tokens.next.value]=!0,rt(),rt(":"),fn();if(f.tokens.next.id!==",")break;rt(",")}rt("}")}function t(){var e=f.tokens.next;rt("[");if(f.tokens.next.id!=="]")for(;;){if(f.tokens.next.id==="(end)")G("E027",f.tokens.next,e.line);else{if(f.tokens.next.id==="]"){K("W094",f.tokens.curr);break}f.tokens.next.id===","&&G("E028",f.tokens.next)}fn();if(f.tokens.next.id!==",")break;rt(",")}rt("]")}switch(f.tokens.next.id){case"{":e();break;case"[":t();break;case"true":case"false":case"null":case"(number)":case"(string)":rt();break;case"-":rt("-"),rt("(number)");break;default:G("E003",f.tokens.next)}}var e,t,n={"<":!0,"<=":!0,"==":!0,"===":!0,"!==":!0,"!=":!0,">":!0,">=":!0,"+":!0,"-":!0,"*":!0,"/":!0,"%":!0},h={asi:!0,bitwise:!0,boss:!0,browser:!0,camelcase:!0,couch:!0,curly:!0,debug:!0,devel:!0,dojo:!0,eqeqeq:!0,eqnull:!0,notypeof:!0,es3:!0,es5:!0,esnext:!0,moz:!0,evil:!0,expr:!0,forin:!0,funcscope:!0,globalstrict:!0,immed:!0,iterator:!0,jasmine:!0,jquery:!0,lastsemic:!0,laxbreak:!0,laxcomma:!0,loopfunc:!0,mootools:!0,multistr:!0,freeze:!0,newcap:!0,noarg:!0,node:!0,noempty:!0,nonbsp:!0,nonew:!0,nonstandard:!0,phantom:!0,plusplus:!0,proto:!0,prototypejs:!0,qunit:!0,rhino:!0,shelljs:!0,typed:!0,undef:!0,scripturl:!0,strict:!0,sub:!0,supernew:!0,validthis:!0,withstmt:!0,worker:!0,wsh:!0,yui:!0,mocha:!0,noyield:!0,onecase:!0,regexp:!0,regexdash:!0},p={maxlen:!1,indent:!1,maxerr:!1,predef:!1,globals:!1,quotmark:!1,scope:!1,maxstatements:!1,maxdepth:!1,maxparams:!1,maxcomplexity:!1,shadow:!1,unused:!0,latedef:!1,ignore:!1},d={bitwise:!0,forin:!0,newcap:!0,plusplus:!0,regexp:!0,undef:!0,eqeqeq:!0,strict:!0},v={eqeq:"eqeqeq",windows:"wsh",sloppy:"strict"},m={nomen:!0,onevar:!0,passfail:!0,white:!0,gcl:!0,smarttabs:!0,trailing:!0},g,y,b=["closure","exception","global","label","outer","unused","var"],w,E,S,x,T,N,C,k,L,A,O,M,D,P,H,B,j=[],F=new i.EventEmitter;gt("(number)",function(){return this}),gt("(string)",function(){return this}),gt("(template)",function(){return this}),f.syntax["(identifier)"]={type:"(identifier)",lbp:0,identifier:!0,nud:function(){var t=this.value,n=D[t],r,i;typeof n=="function"?n=undefined:!w["(blockscope)"].current.has(t)&&typeof n=="boolean"&&(r=w,w=E[0],et(t,{type:"var"}),n=w,w=r),i=w["(blockscope)"].getlabel(t);if(w===n||i)switch(i?i[t]["(type)"]:w[t]){case"unused":i?i[t]["(type)"]="var":w[t]="var";break;case"unction":i?i[t]["(type)"]="function":w[t]="function",this["function"]=!0;break;case"const":Xt(w,t,{unused:!1});break;case"function":this["function"]=!0;break;case"label":K("W037",f.tokens.curr,t)}else if(w["(global)"])typeof M[t]!="boolean"&&(e!=="typeof"&&e!=="delete"||f.tokens.next&&(f.tokens.next.value==="."||f.tokens.next.value==="["))&&(w["(comparray)"].check(t)||$(w,"W117",f.tokens.curr,t)),qt(f.tokens.curr);else switch(w[t]){case"closure":case"function":case"var":case"unused":K("W038",f.tokens.curr,t);break;case"label":K("W037",f.tokens.curr,t);break;case"outer":case"global":break;default:if(n===!0)w[t]=!0;else if(n===null)K("W039",f.tokens.curr,t),qt(f.tokens.curr);else if(typeof n!="object")(e!=="typeof"&&e!=="delete"||f.tokens.next&&(f.tokens.next.value==="."||f.tokens.next.value==="["))&&$(w,"W117",f.tokens.curr,t),w[t]=!0,qt(f.tokens.curr);else switch(n[t]){case"function":case"unction":this["function"]=!0,n[t]="closure",w[t]=n["(global)"]?"global":"outer";break;case"var":case"unused":n[t]="closure",w[t]=n["(global)"]?"global":"outer";break;case"const":Xt(n,t,{unused:!1});break;case"closure":w[t]=n["(global)"]?"global":"outer";break;case"label":K("W037",f.tokens.curr,t)}}return this},led:function(){G("E033",f.tokens.next,f.tokens.next.value)}},gt("(regexp)",function(){return this}),ht("(endline)"),ht("(begin)"),ht("(end)").reach=!0,ht("(error)").reach=!0,ht("}").reach=!0,ht(")"),ht("]"),ht('"').reach=!0,ht("'").reach=!0,ht(";"),ht(":").reach=!0,ht("#"),yt("else"),yt("case").reach=!0,yt("catch"),yt("default").reach=!0,yt("finally"),wt("arguments",function(e){f.directive["use strict"]&&w["(global)"]&&K("E008",e)}),wt("eval"),wt("false"),wt("Infinity"),wt("null"),wt("this",function(e){f.directive["use strict"]&&!f.option.validthis&&(w["(statement)"]&&w["(name)"].charAt(0)>"Z"||w["(global)"])&&K("W040",e)}),wt("true"),wt("undefined"),kt("=","assign",20),kt("+=","assignadd",20),kt("-=","assignsub",20),kt("*=","assignmult",20),kt("/=","assigndiv",20).nud=function(){G("E014")},kt("%=","assignmod",20),At("&=","assignbitand",20),At("|=","assignbitor",20),At("^=","assignbitxor",20),At("<<=","assignshiftleft",20),At(">>=","assignshiftright",20),At(">>>=","assignshiftrightunsigned",20),Et(",",function(e,t){var n;t.exprs=[e];if(!lt({peek:!0}))return t;for(;;){if(!(n=ot(10)))break;t.exprs.push(n);if(f.tokens.next.value!==","||!lt())break}return t},10,!0),Et("?",function(e,t){return Qt(),t.left=e,t.right=ot(10),rt(":"),t["else"]=ot(10),t},30);var Rt=40;Et("||",function(e,t){return Qt(),t.left=e,t.right=ot(Rt),t},Rt),Et("&&","and",50),Lt("|","bitor",70),Lt("^","bitxor",80),Lt("&","bitand",90),xt("==",function(e,t){var n=f.option.eqnull&&(e.value==="null"||t.value==="null");switch(!0){case!n&&f.option.eqeqeq:this.from=this.character,K("W116",this,"===","==");break;case Tt(e):K("W041",this,"===",e.value);break;case Tt(t):K("W041",this,"===",t.value);break;case Nt(t,e):K("W122",this,t.value);break;case Nt(e,t):K("W122",this,e.value)}return this}),xt("===",function(e,t){return Nt(t,e)?K("W122",this,t.value):Nt(e,t)&&K("W122",this,e.value),this}),xt("!=",function(e,t){var n=f.option.eqnull&&(e.value==="null"||t.value==="null");return!n&&f.option.eqeqeq?(this.from=this.character,K("W116",this,"!==","!=")):Tt(e)?K("W041",this,"!==",e.value):Tt(t)?K("W041",this,"!==",t.value):Nt(t,e)?K("W122",this,t.value):Nt(e,t)&&K("W122",this,e.value),this}),xt("!==",function(e,t){return Nt(t,e)?K("W122",this,t.value):Nt(e,t)&&K("W122",this,e.value),this}),xt("<"),xt(">"),xt("<="),xt(">="),Lt("<<","shiftleft",120),Lt(">>","shiftright",120),Lt(">>>","shiftrightunsigned",120),Et("in","in",120),Et("instanceof","instanceof",120),Et("+",function(e,t){var n=ot(130);return e&&n&&e.id==="(string)"&&n.id==="(string)"?(e.value+=n.value,e.character=n.character,!f.option.scripturl&&a.javascriptURL.test(e.value)&&K("W050",e),e):(t.left=e,t.right=n,t)},130),mt("+","num"),mt("+++",function(){return K("W007"),this.right=ot(150),this.arity="unary",this}),Et("+++",function(e){return K("W007"),this.left=e,this.right=ot(130),this},130),Et("-","sub",130),mt("-","neg"),mt("---",function(){return K("W006"),this.right=ot(150),this.arity="unary",this}),Et("---",function(e){return K("W006"),this.left=e,this.right=ot(130),this},130),Et("*","mult",140),Et("/","div",140),Et("%","mod",140),Ot("++","postinc"),mt("++","preinc"),f.syntax["++"].exps=!0,Ot("--","postdec"),mt("--","predec"),f.syntax["--"].exps=!0,mt("delete",function(){var e=ot(10);return(!e||e.id!=="."&&e.id!=="[")&&K("W051"),this.first=e,this}).exps=!0,mt("~",function(){return f.option.bitwise&&K("W052",this,"~"),ot(150),this}),mt("...",function(){return f.option.inESNext()||K("W104",this,"spread/rest operator"),f.tokens.next.identifier||G("E030",f.tokens.next,f.tokens.next.value),ot(150),this}),mt("!",function(){return this.right=ot(150),this.arity="unary",this.right||V("E041",this.line||0),n[this.right.id]===!0&&K("W018",this,"!"),this}),mt("typeof","typeof"),mt("new",function(){var e=ot(155),t;if(e&&e.id!=="function")if(e.identifier){e["new"]=!0;switch(e.value){case"Number":case"String":case"Boolean":case"Math":case"JSON":K("W053",f.tokens.prev,e.value);break;case"Function":f.option.evil||K("W054");break;case"Date":case"RegExp":case"this":break;default:e.id!=="function"&&(t=e.value.substr(0,1),f.option.newcap&&(t<"A"||t>"Z")&&!r.has(S,e.value)&&K("W055",f.tokens.curr))}}else e.id!=="."&&e.id!=="["&&e.id!=="("&&K("W056",f.tokens.curr);else f.option.supernew||K("W057",this);return f.tokens.next.id!=="("&&!f.option.supernew&&K("W058",f.tokens.curr,f.tokens.curr.value),this.first=e,this}),f.syntax["new"].exps=!0,mt("void").exps=!0,Et(".",function(e,t){var n=_t(!1,!0);return typeof n=="string"&&It(n),t.left=e,t.right=n,n&&n==="hasOwnProperty"&&f.tokens.next.value==="="&&K("W001"),!e||e.value!=="arguments"||n!=="callee"&&n!=="caller"?!f.option.evil&&e&&e.value==="document"&&(n==="write"||n==="writeln")&&K("W060",e):f.option.noarg?K("W059",e,n):f.directive["use strict"]&&G("E008"),!f.option.evil&&(n==="eval"||n==="execScript")&&K("W061"),t},160,!0),Et("(",function(e,t){f.option.immed&&e&&!e.immed&&e.id==="function"&&K("W062");var n=0,r=[];e&&e.type==="(identifier)"&&e.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)&&"Number String Boolean Date Object Error".indexOf(e.value)===-1&&(e.value==="Math"?K("W063",e):f.option.newcap&&K("W064",e));if(f.tokens.next.id!==")")for(;;){r[r.length]=ot(10),n+=1;if(f.tokens.next.id!==",")break;lt()}return rt(")"),typeof e=="object"&&(f.option.inES3()&&e.value==="parseInt"&&n===1&&K("W065",f.tokens.curr),f.option.evil||(e.value==="eval"||e.value==="Function"||e.value==="execScript"?(K("W061",e),r[0]&&[0].id==="(string)"&&Z(e,r[0].value)):!r[0]||r[0].id!=="(string)"||e.value!=="setTimeout"&&e.value!=="setInterval"?r[0]&&r[0].id==="(string)"&&e.value==="."&&e.left.value==="window"&&(e.right==="setTimeout"||e.right==="setInterval")&&(K("W066",e),Z(e,r[0].value)):(K("W066",e),Z(e,r[0].value))),!e.identifier&&e.id!=="."&&e.id!=="["&&e.id!=="("&&e.id!=="&&"&&e.id!=="||"&&e.id!=="?"&&K("W067",e)),t.left=e,t},155,!0).exps=!0,mt("(",function(){var e,t=[],n,i,s=0,o,u=1;do n=nt(s),n.value==="("?u+=1:n.value===")"&&(u-=1),s+=1,i=nt(s);while((u!==0||n.value!==")")&&i.value!=="=>"&&i.value!==";"&&i.type!=="(end)");f.tokens.next.id==="function"&&(f.tokens.next.immed=!0);var a=[];if(f.tokens.next.id!==")")for(;;){if(i.value==="=>"&&r.contains(["{","["],f.tokens.next.value)){e=f.tokens.next,e.left=Yt(),t.push(e);for(var l in e.left)a.push(e.left[l].token)}else a.push(ot(10));if(f.tokens.next.id!==",")break;lt()}rt(")",this),f.option.immed&&a[0]&&a[0].id==="function"&&f.tokens.next.id!=="("&&(f.tokens.next.id!=="."||nt().value!=="call"&&nt().value!=="apply")&&K("W068",this);if(f.tokens.next.value==="=>")return a;if(!a.length)return;return a.length>1?(o=Object.create(f.syntax[","]),o.exprs=a):o=a[0],o&&(o.paren=!0),o}),St("=>"),Et("[",function(e,t){var n=ot(10),r;return n&&n.type==="(string)"&&(!f.option.evil&&(n.value==="eval"||n.value==="execScript")&&K("W061",t),It(n.value),!f.option.sub&&a.identifier.test(n.value)&&(r=f.syntax[n.value],(!r||!U(r))&&K("W069",f.tokens.prev,n.value))),rt("]",t),n&&n.value==="hasOwnProperty"&&f.tokens.next.value==="="&&K("W001"),t.left=e,t.right=n,t},160,!0),mt("[",function(){var e=on(!0);if(e.isCompArray)return f.option.inESNext()||K("W119",f.tokens.curr,"array comprehension"),Ut();e.isDestAssign&&!f.option.inESNext()&&K("W104",f.tokens.curr,"destructuring assignment");var t=f.tokens.curr.line!==f.tokens.next.line;this.first=[],t&&(N+=f.option.indent,f.tokens.next.from===N+f.option.indent&&(N+=f.option.indent));while(f.tokens.next.id!=="(end)"){while(f.tokens.next.id===",")f.option.inES5()||K("W070"),rt(",");if(f.tokens.next.id==="]")break;this.first.push(ot(10));if(f.tokens.next.id!==",")break;lt({allowTrailing:!0});if(f.tokens.next.id==="]"&&!f.option.inES5(!0)){K("W070",f.tokens.curr);break}}return t&&(N-=f.option.indent),rt("]",this),this},160),function(e){e.nud=function(e){function c(e,t){a[e]&&r.has(a,e)?K("W075",f.tokens.next,i):a[e]={},a[e].basic=!0,a[e].basictkn=t}function h(e,t){a[e]&&r.has(a,e)?(a[e].basic||a[e].setter)&&K("W075",f.tokens.next,i):a[e]={},a[e].setter=!0,a[e].setterToken=t}function p(e){a[e]&&r.has(a,e)?(a[e].basic||a[e].getter)&&K("W075",f.tokens.next,i):a[e]={},a[e].getter=!0,a[e].getterToken=f.tokens.curr}var t,n,i,s,o,u,a={},l="";t=f.tokens.curr.line!==f.tokens.next.line,t&&(N+=f.option.indent,f.tokens.next.from===N+f.option.indent&&(N+=f.option.indent));for(;;){if(f.tokens.next.id==="}")break;e&&f.tokens.next.value==="static"&&(rt("static"),l="static ");if(f.tokens.next.value==="get"&&nt().id!==":")rt("get"),f.option.inES5(!e)||G("E034"),i=zt(),!i&&!f.option.inESNext()&&G("E035"),e&&i==="constructor"&&G("E049",f.tokens.next,"class getter method",i),i&&p(l+i),o=f.tokens.next,n=Jt(),s=n["(params)"],i&&s&&K("W076",o,s[0],i);else if(f.tokens.next.value==="set"&&nt().id!==":")rt("set"),f.option.inES5(!e)||G("E034"),i=zt(),!i&&!f.option.inESNext()&&G("E035"),e&&i==="constructor"&&G("E049",f.tokens.next,"class setter method",i),i&&h(l+i,f.tokens.next),o=f.tokens.next,n=Jt(),s=n["(params)"],i&&(!s||s.length!==1)&&K("W077",o,i);else{u=!1,f.tokens.next.value==="*"&&f.tokens.next.type==="(punctuator)"&&(f.option.inESNext()||K("W104",f.tokens.next,"generator functions"),rt("*"),u=!0),i=zt(),c(l+i,f.tokens.next);if(typeof i!="string")break;f.tokens.next.value==="("?(f.option.inESNext()||K("W104",f.tokens.curr,"concise methods"),Jt(i,undefined,u)):e||(rt(":"),ot(10))}e&&i==="prototype"&&G("E049",f.tokens.next,"class method",i),It(i);if(e){l="";continue}if(f.tokens.next.id!==",")break;lt({allowTrailing:!0,property:!0}),f.tokens.next.id===","?K("W070",f.tokens.curr):f.tokens.next.id==="}"&&!f.option.inES5(!0)&&K("W070",f.tokens.curr)}t&&(N-=f.option.indent),rt("}",this);if(f.option.inES5())for(var d in a)r.has(a,d)&&a[d].setter&&!a[d].getter&&K("W078",a[d].setterToken);return this},e.fud=function(){G("E036",f.tokens.curr)}}(ht("{"));var en=pt("const",function(e){var t,n,i;f.option.inESNext()||K("W104",f.tokens.curr,"const"),this.first=[];for(;;){var s=[];r.contains(["{","["],f.tokens.next.value)?(t=Yt(),i=!1):(t=[{id:_t(),token:f.tokens.curr}],i=!0);for(var o in t)t.hasOwnProperty(o)&&(o=t[o],w[o.id]==="const"&&K("E011",null,o.id),w["(global)"]&&M[o.id]===!1&&K("W079",o.token,o.id),o.id&&(et(o.id,{token:o.token,type:"const",unused:!0}),s.push(o.token)));if(e)break;this.first=this.first.concat(s),f.tokens.next.id!=="="&&K("E012",f.tokens.curr,f.tokens.curr.value),f.tokens.next.id==="="&&(rt("="),f.tokens.next.id==="undefined"&&K("W080",f.tokens.prev,f.tokens.prev.value),nt(0).id==="="&&f.tokens.next.identifier&&K("W120",f.tokens.next,f.tokens.next.value),n=ot(10),i?t[0].first=n:Zt(s,n));if(f.tokens.next.id!==",")break;lt()}return this});en.exps=!0;var tn=pt("var",function(e){var t,n,i;this.first=[];for(;;){var s=[];r.contains(["{","["],f.tokens.next.value)?(t=Yt(),n=!1):(t=[{id:_t(),token:f.tokens.curr}],n=!0);for(var o in t)t.hasOwnProperty(o)&&(o=t[o],f.option.inESNext()&&w[o.id]==="const"&&K("E011",null,o.id),w["(global)"]&&M[o.id]===!1&&K("W079",o.token,o.id),o.id&&(et(o.id,{type:"unused",token:o.token}),s.push(o.token)));if(e)break;this.first=this.first.concat(s),f.tokens.next.id==="="&&(rt("="),f.tokens.next.id==="undefined"&&K("W080",f.tokens.prev,f.tokens.prev.value),nt(0).id==="="&&f.tokens.next.identifier&&K("W120",f.tokens.next,f.tokens.next.value),i=ot(10),n?t[0].first=i:Zt(s,i));if(f.tokens.next.id!==",")break;lt()}return this});tn.exps=!0;var nn=pt("let",function(e){var t,n,i,s;f.option.inESNext()||K("W104",f.tokens.curr,"let"),f.tokens.next.value==="("?(f.option.inMoz(!0)||K("W118",f.tokens.next,"let block"),rt("("),w["(blockscope)"].stack(),s=!0):w["(nolet)"]&&G("E048",f.tokens.curr),this.first=[];for(;;){var o=[];r.contains(["{","["],f.tokens.next.value)?(t=Yt(),n=!1):(t=[{id:_t(),token:f.tokens.curr.value}],n=!0);for(var u in t)t.hasOwnProperty(u)&&(u=t[u],f.option.inESNext()&&w[u.id]==="const"&&K("E011",null,u.id),w["(global)"]&&M[u.id]===!1&&K("W079",u.token,u.id),u.id&&!w["(nolet)"]&&(et(u.id,{type:"unused",token:u.token,islet:!0}),o.push(u.token)));if(e)break;this.first=this.first.concat(o),f.tokens.next.id==="="&&(rt("="),f.tokens.next.id==="undefined"&&K("W080",f.tokens.prev,f.tokens.prev.value),nt(0).id==="="&&f.tokens.next.identifier&&K("W120",f.tokens.next,f.tokens.next.value),i=ot(10),n?t[0].first=i:Zt(o,i));if(f.tokens.next.id!==",")break;lt()}return s&&(rt(")"),Ft(!0,!0),this.block=!0,w["(blockscope)"].unstack()),this});nn.exps=!0,dt("class",function(){return rn.call(this,!0)}),dt("function",function(){var e=!1;f.tokens.next.value==="*"&&(rt("*"),f.option.inESNext(!0)?e=!0:K("W119",f.tokens.curr,"function*")),T&&K("W082",f.tokens.curr);var t=_t();return w[t]==="const"&&K("E011",null,t),et(t,{type:"unction",token:f.tokens.curr}),Jt(t,{statement:!0},e),f.tokens.next.id==="("&&f.tokens.next.line===f.tokens.curr.line&&G("E039"),this}),mt("function",function(){var e=!1;f.tokens.next.value==="*"&&(f.option.inESNext()||K("W119",f.tokens.curr,"function*"),rt("*"),e=!0);var t=Mt();return Jt(t,undefined,e),!f.option.loopfunc&&w["(loopage)"]&&K("W083"),this}),dt("if",function(){var e=f.tokens.next;return Qt(),f.condition=!0,rt("("),Gt(ot(0)),rt(")",e),f.condition=!1,Ft(!0,!0),f.tokens.next.id==="else"&&(rt("else"),f.tokens.next.id==="if"||f.tokens.next.id==="switch"?Ht(!0):Ft(!0,!0)),this}),dt("try",function(){function t(){var e=D,t;rt("catch"),rt("("),D=Object.create(e),t=f.tokens.next.value,f.tokens.next.type!=="(identifier)"&&(t=null,K("E030",f.tokens.next,t)),rt(),w=$t("(catch)",f.tokens.next,D,{"(context)":w,"(breakage)":w["(breakage)"],"(loopage)":w["(loopage)"],"(statement)":!1,"(catch)":!0}),t&&et(t,{type:"exception"}),f.tokens.next.value==="if"&&(f.option.inMoz(!0)||K("W118",f.tokens.curr,"catch filter"),rt("if"),ot(0)),rt(")"),f.tokens.curr.funct=w,E.push(w),Ft(!1),D=e,w["(last)"]=f.tokens.curr.line,w["(lastcharacter)"]=f.tokens.curr.character,w=w["(context)"]}var e;Ft(!0);while(f.tokens.next.id==="catch")Qt(),e&&!f.option.inMoz(!0)&&K("W118",f.tokens.next,"multiple catch blocks"),t(),e=!0;if(f.tokens.next.id==="finally"){rt("finally"),Ft(!0);return}return e||G("E021",f.tokens.next,"catch",f.tokens.next.value),this}),dt("while",function(){var e=f.tokens.next;return w["(breakage)"]+=1,w["(loopage)"]+=1,Qt(),rt("("),Gt(ot(0)),rt(")",e),Ft(!0,!0),w["(breakage)"]-=1,w["(loopage)"]-=1,this}).labelled=!0,dt("with",function(){var e=f.tokens.next;return f.directive["use strict"]?G("E010",f.tokens.curr):f.option.withstmt||K("W085",f.tokens.curr),rt("("),ot(0),rt(")",e),Ft(!0,!0),this}),dt("switch",function(){var e=f.tokens.next,t=!1,n=!1;w["(breakage)"]+=1,rt("("),Gt(ot(0)),rt(")",e),e=f.tokens.next,rt("{"),f.tokens.next.from===N&&(n=!0),n||(N+=f.option.indent),this.cases=[];for(;;)switch(f.tokens.next.id){case"case":switch(w["(verb)"]){case"yield":case"break":case"case":case"continue":case"return":case"switch":case"throw":break;default:a.fallsThrough.test(f.lines[f.tokens.next.line-2])||K("W086",f.tokens.curr,"case")}rt("case"),this.cases.push(ot(0)),Qt(),t=!0,rt(":"),w["(verb)"]="case";break;case"default":switch(w["(verb)"]){case"yield":case"break":case"continue":case"return":case"throw":break;default:this.cases.length&&(a.fallsThrough.test(f.lines[f.tokens.next.line-2])||K("W086",f.tokens.curr,"default"))}rt("default"),t=!0,rt(":");break;case"}":n||(N-=f.option.indent),rt("}",e),w["(breakage)"]-=1,w["(verb)"]=undefined;return;case"(end)":G("E023",f.tokens.next,"}");return;default:N+=f.option.indent;if(t)switch(f.tokens.curr.id){case",":G("E040");return;case":":t=!1,Bt();break;default:G("E025",f.tokens.curr);return}else{if(f.tokens.curr.id!==":"){G("E021",f.tokens.next,"case",f.tokens.next.value);return}rt(":"),G("E024",f.tokens.curr,":"),Bt()}N-=f.option.indent}}).labelled=!0,pt("debugger",function(){return f.option.debug||K("W087",this),this}).exps=!0,function(){var e=pt("do",function(){w["(breakage)"]+=1,w["(loopage)"]+=1,Qt(),this.first=Ft(!0,!0),rt("while");var e=f.tokens.next;return rt("("),Gt(ot(0)),rt(")",e),w["(breakage)"]-=1,w["(loopage)"]-=1,this});e.labelled=!0,e.exps=!0}(),dt("for",function(){var e,t=f.tokens.next,n=!1,i=null;t.value==="each"&&(i=t,rt("each"),f.option.inMoz(!0)||K("W118",f.tokens.curr,"for each")),w["(breakage)"]+=1,w["(loopage)"]+=1,Qt(),rt("(");var s,o=0,u=["in","of"];do s=nt(o),++o;while(!r.contains(u,s.value)&&s.value!==";"&&s.type!=="(end)");if(r.contains(u,s.value)){!f.option.inESNext()&&s.value==="of"&&G("W104",s,"for of");if(f.tokens.next.id==="var")rt("var"),f.syntax["var"].fud.call(f.syntax["var"].fud,!0);else if(f.tokens.next.id==="let")rt("let"),n=!0,w["(blockscope)"].stack(),f.syntax.let.fud.call(f.syntax.let.fud,!0);else if(!f.tokens.next.identifier)G("E030",f.tokens.next,f.tokens.next.type),rt();else{switch(w[f.tokens.next.value]){case"unused":w[f.tokens.next.value]="var";break;case"var":break;default:w["(blockscope)"].getlabel(f.tokens.next.value)||K("W088",f.tokens.next,f.tokens.next.value)}rt()}rt(s.value),ot(20),rt(")",t),e=Ft(!0,!0),f.option.forin&&e&&(e.length>1||typeof e[0]!="object"||e[0].value!=="if")&&K("W089",this),w["(breakage)"]-=1,w["(loopage)"]-=1}else{i&&G("E045",i);if(f.tokens.next.id!==";")if(f.tokens.next.id==="var")rt("var"),f.syntax["var"].fud.call(f.syntax["var"].fud);else if(f.tokens.next.id==="let")rt("let"),n=!0,w["(blockscope)"].stack(),f.syntax.let.fud.call(f.syntax.let.fud);else for(;;){ot(0,"for");if(f.tokens.next.id!==",")break;lt()}at(f.tokens.curr),rt(";"),f.tokens.next.id!==";"&&Gt(ot(0)),at(f.tokens.curr),rt(";"),f.tokens.next.id===";"&&G("E021",f.tokens.next,")",";");if(f.tokens.next.id!==")")for(;;){ot(0,"for");if(f.tokens.next.id!==",")break;lt()}rt(")",t),Ft(!0,!0),w["(breakage)"]-=1,w["(loopage)"]-=1}return n&&w["(blockscope)"].unstack(),this}).labelled=!0,pt("break",function(){var e=f.tokens.next.value;return w["(breakage)"]===0&&K("W052",f.tokens.next,this.value),f.option.asi||at(this),f.tokens.next.id!==";"&&!f.tokens.next.reach&&f.tokens.curr.line===f.tokens.next.line&&(w[e]!=="label"?K("W090",f.tokens.next,e):D[e]!==w&&K("W091",f.tokens.next,e),this.first=f.tokens.next,rt()),Dt("break"),this}).exps=!0,pt("continue",function(){var e=f.tokens.next.value;return w["(breakage)"]===0&&K("W052",f.tokens.next,this.value),f.option.asi||at(this),f.tokens.next.id!==";"&&!f.tokens.next.reach?f.tokens.curr.line===f.tokens.next.line&&(w[e]!=="label"?K("W090",f.tokens.next,e):D[e]!==w&&K("W091",f.tokens.next,e),this.first=f.tokens.next,rt()):w["(loopage)"]||K("W052",f.tokens.next,this.value),Dt("continue"),this}).exps=!0,pt("return",function(){return this.line===f.tokens.next.line?f.tokens.next.id!==";"&&!f.tokens.next.reach&&(this.first=ot(0),this.first&&this.first.type==="(punctuator)"&&this.first.value==="="&&!this.first.paren&&!f.option.boss&&Q("W093",this.first.line,this.first.character)):f.tokens.next.type==="(punctuator)"&&["[","{","+","-"].indexOf(f.tokens.next.value)>-1&&at(this),Dt("return"),this}).exps=!0,function(e){e.exps=!0,e.lbp=25}(mt("yield",function(){var e=f.tokens.prev;return f.option.inESNext(!0)&&!w["(generator)"]?("(catch)"!==w["(name)"]||!w["(context)"]["(generator)"])&&G("E046",f.tokens.curr,"yield"):f.option.inESNext()||K("W104",f.tokens.curr,"yield"),w["(generator)"]="yielded",this.line===f.tokens.next.line||!f.option.inMoz(!0)?(f.tokens.next.id!==";"&&!f.tokens.next.reach&&f.tokens.next.nud&&(ut(f.tokens.curr,f.tokens.next),this.first=ot(10),this.first.type==="(punctuator)"&&this.first.value==="="&&!this.first.paren&&!f.option.boss&&Q("W093",this.first.line,this.first.character)),f.option.inMoz(!0)&&f.tokens.next.id!==")"&&(e.lbp>30||!e.assign&&!st()||e.id==="yield")&&G("E050",this)):f.option.asi||at(this),this})),pt("throw",function(){return at(this),this.first=ot(20),Dt("throw"),this}).exps=!0,pt("import",function(){f.option.inESNext()||K("W119",f.tokens.curr,"import");if(f.tokens.next.type==="(string)")return rt("(string)"),this;if(f.tokens.next.identifier)this.name=_t(),et(this.name,{type:"unused",token:f.tokens.curr});else{rt("{");for(;;){if(f.tokens.next.value==="}"){rt("}");break}var e;f.tokens.next.type==="default"?(e="default",rt("default")):e=_t(),f.tokens.next.value==="as"&&(rt("as"),e=_t()),et(e,{type:"unused",token:f.tokens.curr});if(f.tokens.next.value!==","){if(f.tokens.next.value==="}"){rt("}");break}G("E024",f.tokens.next,f.tokens.next.value);break}rt(",")}}return rt("from"),rt("(string)"),this}).exps=!0,pt("export",function(){f.option.inESNext()||K("W119",f.tokens.curr,"export");if(f.tokens.next.type==="default"){rt("default");if(f.tokens.next.id==="function"||f.tokens.next.id==="class")this.block=!0;return this.exportee=ot(10),this}if(f.tokens.next.value==="{"){rt("{");for(;;){y[_t()]=!0;if(f.tokens.next.value!==","){if(f.tokens.next.value==="}"){rt("}");break}G("E024",f.tokens.next,f.tokens.next.value);break}rt(",")}return this}return f.tokens.next.id==="var"?(rt("var"),y[f.tokens.next.value]=!0,f.syntax["var"].fud.call(f.syntax["var"].fud)):f.tokens.next.id==="let"?(rt("let"),y[f.tokens.next.value]=!0,f.syntax.let.fud.call(f.syntax.let.fud)):f.tokens.next.id==="const"?(rt("const"),y[f.tokens.next.value]=!0,f.syntax["const"].fud.call(f.syntax["const"].fud)):f.tokens.next.id==="function"?(this.block=!0,rt("function"),y[f.tokens.next.value]=!0,f.syntax["function"].fud()):f.tokens.next.id==="class"?(this.block=!0,rt("class"),y[f.tokens.next.value]=!0,f.syntax["class"].fud()):G("E024",f.tokens.next,f.tokens.next.value),this}).exps=!0,bt("abstract"),bt("boolean"),bt("byte"),bt("char"),bt("class",{es5:!0,nud:rn}),bt("double"),bt("enum",{es5:!0}),bt("export",{es5:!0}),bt("extends",{es5:!0}),bt("final"),bt("float"),bt("goto"),bt("implements",{es5:!0,strictOnly:!0}),bt("import",{es5:!0}),bt("int"),bt("interface",{es5:!0,strictOnly:!0}),bt("long"),bt("native"),bt("package",{es5:!0,strictOnly:!0}),bt("private",{es5:!0,strictOnly:!0}),bt("protected",{es5:!0,strictOnly:!0}),bt("public",{es5:!0,strictOnly:!0}),bt("short"),bt("static",{es5:!0,strictOnly:!0}),bt("super",{es5:!0}),bt("synchronized"),bt("transient"),bt("volatile");var on=function(){var e,t,n=-1,i=0,s={};r.contains(["[","{"],f.tokens.curr.value)&&(i+=1);do{e=n===-1?f.tokens.next:nt(n),t=nt(n+1),n+=1,r.contains(["[","{"],e.value)?i+=1:r.contains(["]","}"],e.value)&&(i-=1);if(e.identifier&&e.value==="for"&&i===1){s.isCompArray=!0,s.notJson=!0;break}if(r.contains(["}","]"],e.value)&&t.value==="="&&i===0){s.isDestAssign=!0,s.notJson=!0;break}e.value===";"&&(s.isBlock=!0,s.notJson=!0)}while(i>0&&e.id!=="(end)"&&n<15);return s},an=function(){function i(e){var t=n.variables.filter(function(t){if(t.value===e)return t.undef=!1,e}).length;return t!==0}function s(e){var t=n.variables.filter(function(t){if(t.value===e&&!t.undef)return t.unused===!0&&(t.unused=!1),e}).length;return t===0}var e=function(){this.mode="use",this.variables=[]},t=[],n;return{stack:function(){n=new e,t.push(n)},unstack:function(){n.variables.filter(function(e){e.unused&&K("W098",e.token,e.value),e.undef&&$(e.funct,"W117",e.token,e.value)}),t.splice(-1,1),n=t[t.length-1]},setState:function(e){r.contains(["use","define","generate","filter"],e)&&(n.mode=e)},check:function(e){if(!n)return;return n&&n.mode==="use"?(s(e)&&n.variables.push({funct:w,token:f.tokens.curr,value:e,undef:!0,unused:!1}),!0):n&&n.mode==="define"?(i(e)||n.variables.push({funct:w,token:f.tokens.curr,value:e,undef:!1,unused:!0}),!0):n&&n.mode==="generate"?($(w,"W117",f.tokens.curr,e),!0):n&&n.mode==="filter"?(s(e)&&$(w,"W117",f.tokens.curr,e),!0):!1}}},ln=function(){function n(){for(var t in e)if(e[t]["(type)"]==="unused"&&f.option.unused){var n=e[t]["(token)"],r=n.line,i=n.character;Q("W098",r,i,t)}}var e={},t=[e];return{stack:function(){e={},t.push(e)},unstack:function(){n(),t.splice(t.length-1,1),e=r.last(t)},getlabel:function(e){for(var n=t.length-1;n>=0;--n)if(r.has(t[n],e)&&!t[n][e]["(shadowed)"])return t[n]},shadow:function(e){for(var n=t.length-1;n>=0;n--)r.has(t[n],e)&&(t[n][e]["(shadowed)"]=!0)},unshadow:function(e){for(var n=t.length-1;n>=0;n--)r.has(t[n],e)&&(t[n][e]["(shadowed)"]=!1)},current:{has:function(t){return r.has(e,t)},add:function(t,n,r){e[t]={"(type)":n,"(token)":r,"(shadowed)":!1}}}}},cn=function(e,n,i){function v(e,t){if(!e)return;!Array.isArray(e)&&typeof e=="object"&&(e=Object.keys(e)),e.forEach(t)}var o,a,l,h,p={},d={};n=r.clone(n),f.reset(),n&&n.scope?c.scope=n.scope:(c.errors=[],c.undefs=[],c.internals=[],c.blacklist={},c.scope="(main)"),M=Object.create(null),W(M,s.ecmaIdentifiers),W(M,s.reservedVars),W(M,i||{}),g=Object.create(null),y=Object.create(null);if(n){v(n.predef||null,function(e){var t,r;e[0]==="-"?(t=e.slice(1),c.blacklist[t]=t):(r=Object.getOwnPropertyDescriptor(n.predef,e),M[e]=r?r.value:!1)}),v(n.exported||null,function(e){y[e]=!0}),delete n.predef,delete n.exported,h=Object.keys(n);for(l=0;l<h.length;l++)/^-W\d{3}$/g.test(h[l])?d[h[l].slice(1)]=!0:(p[h[l]]=n[h[l]],h[l]==="newcap"&&n[h[l]]===!1&&(p["(explicitNewcap)"]=!0))}f.option=p,f.ignored=d,f.option.indent=f.option.indent||4,f.option.maxerr=f.option.maxerr||50,N=1,S=Object.create(M),D=S,w=$t("(global)",null,D,{"(global)":!0,"(blockscope)":ln(),"(comparray)":an(),"(metrics)":Kt(f.tokens.next)}),E=[w],B=[],P=null,L={},A=null,x={},T=!1,C=[],H=[];if(!q(e)&&!Array.isArray(e))return Y("E004",0),!1;t={get isJSON(){return f.jsonMode},getOption:function(e){return f.option[e]||null},getCache:function(e){return f.cache[e]},setCache:function(e,t){f.cache[e]=t},warn:function(e,t){Q.apply(null,[e,t.line,t.char].concat(t.data))},on:function(e,t){e.split(" ").forEach(function(e){F.on(e,t)}.bind(this))}},F.removeAllListeners(),(j||[]).forEach(function(e){e(t)}),f.tokens.prev=f.tokens.curr=f.tokens.next=f.syntax["(begin)"],k=new u(e),k.on("warning",function(e){Q.apply(null,[e.code,e.line,e.character].concat(e.data))}),k.on("error",function(e){Y.apply(null,[e.code,e.line,e.character].concat(e.data))}),k.on("fatal",function(e){V("E041",e.line,e.from)}),k.on("Identifier",function(e){F.emit("Identifier",e)}),k.on("String",function(e){F.emit("String",e)}),k.on("Number",function(e){F.emit("Number",e)}),k.start();for(var m in n)r.has(n,m)&&I(m,f.tokens.curr);X(),W(M,i||{}),lt.first=!0;try{rt();switch(f.tokens.next.id){case"{":case"[":un();break;default:jt(),f.directive["use strict"]&&!f.option.globalstrict&&!f.option.node&&!f.option.phantom&&K("W097",f.tokens.prev),Bt()}rt(f.tokens.next&&f.tokens.next.value!=="."?"(end)":undefined),w["(blockscope)"].unstack();var b=function(e,t){do{if(typeof t[e]=="string")return t[e]==="unused"?t[e]="var":t[e]==="unction"&&(t[e]="closure"),!0;t=t["(context)"]}while(t);return!1},O=function(e,t){if(!x[e])return;var n=[];for(var r=0;r<x[e].length;r+=1)x[e][r]!==t&&n.push(x[e][r]);n.length===0?delete x[e]:x[e]=n},R=function(e,t,n,r){var i=t.line,s=t.character;r===undefined&&(r=f.option.unused),r===!0&&(r="last-param");var o={vars:["var"],"last-param":["var","param"],strict:["var","param","last-param"]};r&&o[r]&&o[r].indexOf(n)!==-1&&Q("W098",i,s,e),H.push({name:e,line:i,character:s})},U=function(e,t){var n=e[t],i=e["(tokens)"][t];if(t.charAt(0)==="(")return;if(n!=="unused"&&n!=="unction"&&n!=="const")return;if(e["(params)"]&&e["(params)"].indexOf(t)!==-1)return;if(e["(global)"]&&r.has(y,t))return;if(n==="const"&&!Vt(e,t,"unused"))return;R(t,i,"var")};for(o=0;o<c.undefs.length;o+=1)a=c.undefs[o].slice(0),b(a[2].value,a[0])?O(a[2].value,a[2].line):f.option.undef&&K.apply(K,a.slice(1));E.forEach(function(e){if(e["(unusedOption)"]===!1)return;for(var t in e)r.has(e,t)&&U(e,t);if(!e["(params)"])return;var n=e["(params)"].slice(),i=n.pop(),s,o;while(i){s=e[i],o=e["(unusedOption)"]||f.option.unused,o=o===!0?"last-param":o;if(i==="undefined")return;if(s==="unused"||s==="unction")R(i,e["(tokens)"][i],"param",e["(unusedOption)"]);else if(o==="last-param")return;i=n.pop()}});for(var z in g)r.has(g,z)&&!r.has(S,z)&&!r.has(y,z)&&R(z,g[z],"var")}catch($){if(!$||$.name!=="JSHintError")throw $;var J=f.tokens.next||{};c.errors.push({scope:"(main)",raw:$.raw,code:$.code,reason:$.message,line:$.line||J.line,character:$.character||J.from},null)}if(c.scope==="(main)"){n=n||{};for(o=0;o<c.internals.length;o+=1)a=c.internals[o],n.scope=a.elem,cn(a.value,n,i)}return c.errors.length===0};return cn.addModule=function(e){j.push(e)},cn.addModule(l.register),cn.data=function(){var e={functions:[],options:f.option},t=[],n=[],i,s,o,u,a,l;cn.errors.length&&(e.errors=cn.errors),f.jsonMode&&(e.json=!0);for(a in x)r.has(x,a)&&t.push({name:a,line:x[a]});t.length>0&&(e.implieds=t),B.length>0&&(e.urls=B),l=Object.keys(D),l.length>0&&(e.globals=l);for(o=1;o<E.length;o+=1){s=E[o],i={};for(u=0;u<b.length;u+=1)i[b[u]]=[];for(u=0;u<b.length;u+=1)i[b[u]].length===0&&delete i[b[u]];i.name=s["(name)"],i.param=s["(params)"],i.line=s["(line)"],i.character=s["(character)"],i.last=s["(last)"],i.lastcharacter=s["(lastcharacter)"],i.metrics={complexity:s["(metrics)"].ComplexityCount,parameters:(s["(params)"]||[]).length,statements:s["(metrics)"].statementCount},e.functions.push(i)}H.length>0&&(e.unused=H),n=[];for(a in L)if(typeof L[a]=="number"){e.member=L;break}return e},cn.jshint=cn,cn}();typeof n=="object"&&n&&(n.JSHINT=c)},{"./lex.js":4,"./messages.js":5,"./reg.js":6,"./state.js":7,"./style.js":8,"./vars.js":9,events:10,underscore:2}],4:[function(e,t,n){"use strict";function c(){var e=[];return{push:function(t){e.push(t)},check:function(){for(var t=0;t<e.length;++t)e[t]();e.splice(0,e.length)}}}function h(e){var t=e;typeof t=="string"&&(t=t.replace(/\r\n/g,"\n").replace(/\r/g,"\n").split("\n")),t[0]&&t[0].substr(0,2)==="#!"&&(t[0].indexOf("node")!==-1&&(o.option.node=!0),t[0]=""),this.emitter=new i.EventEmitter,this.source=e,this.setLines(t),this.prereg=!0,this.line=0,this.char=1,this.from=1,this.input="",this.inComment=!1;for(var n=0;n<o.option.indent;n+=1)o.tab+=" "}var r=e("underscore"),i=e("events"),s=e("./reg.js"),o=e("./state.js").state,u=e("../data/ascii-identifier-data.js"),a=u.asciiIdentifierStartTable,f=u.asciiIdentifierPartTable,l={Identifier:1,Punctuator:2,NumericLiteral:3,StringLiteral:4,Comment:5,Keyword:6,NullLiteral:7,BooleanLiteral:8,RegExp:9,TemplateLiteral:10};h.prototype={_lines:[],getLines:function(){return this._lines=o.lines,this._lines},setLines:function(e){this._lines=e,o.lines=this._lines},peek:function(e){return this.input.charAt(e||0)},skip:function(e){e=e||1,this.char+=e,this.input=this.input.slice(e)},on:function(e,t){e.split(" ").forEach(function(e){this.emitter.on(e,t)}.bind(this))},trigger:function(){this.emitter.emit.apply(this.emitter,Array.prototype.slice.call(arguments))},triggerAsync:function(e,t,n,r){n.push(function(){r()&&this.trigger(e,t)}.bind(this))},scanPunctuator:function(){var e=this.peek(),t,n,r;switch(e){case".":if(/^[0-9]$/.test(this.peek(1)))return null;if(this.peek(1)==="."&&this.peek(2)===".")return{type:l.Punctuator,value:"..."};case"(":case")":case";":case",":case"{":case"}":case"[":case"]":case":":case"~":case"?":return{type:l.Punctuator,value:e};case"#":return{type:l.Punctuator,value:e};case"":return null}return t=this.peek(1),n=this.peek(2),r=this.peek(3),e===">"&&t===">"&&n===">"&&r==="="?{type:l.Punctuator,value:">>>="}:e==="="&&t==="="&&n==="="?{type:l.Punctuator,value:"==="}:e==="!"&&t==="="&&n==="="?{type:l.Punctuator,value:"!=="}:e===">"&&t===">"&&n===">"?{type:l.Punctuator,value:">>>"}:e==="<"&&t==="<"&&n==="="?{type:l.Punctuator,value:"<<="}:e===">"&&t===">"&&n==="="?{type:l.Punctuator,value:">>="}:e==="="&&t===">"?{type:l.Punctuator,value:e+t}:e===t&&"+-<>&|".indexOf(e)>=0?{type:l.Punctuator,value:e+t}:"<>=!+-*%&|^".indexOf(e)>=0?t==="="?{type:l.Punctuator,value:e+t}:{type:l.Punctuator,value:e}:e==="/"?t==="="&&/\/=(?!(\S*\/[gim]?))/.test(this.input)?{type:l.Punctuator,value:"/="}:{type:l.Punctuator,value:"/"}:null},scanComments:function(){function s(e,t,n){var r=["jshint","jslint","members","member","globals","global","exported"],i=!1,s=e+t,o="plain";return n=n||{},n.isMultiline&&(s+="*/"),r.forEach(function(n){if(i)return;if(e==="//"&&n!=="jshint")return;t.substr(0,n.length)===n&&(i=!0,e+=n,t=t.substr(n.length)),!i&&t.charAt(0)===" "&&t.substr(1,n.length)===n&&(i=!0,e=e+" "+n,t=t.substr(n.length+1));if(!i)return;switch(n){case"member":o="members";break;case"global":o="globals";break;default:o=n}}),{type:l.Comment,commentType:o,value:s,body:t,isSpecial:i,isMultiline:n.isMultiline||!1,isMalformed:n.isMalformed||!1}}var e=this.peek(),t=this.peek(1),n=this.input.substr(2),r=this.line,i=this.char;if(e==="*"&&t==="/")return this.trigger("error",{code:"E018",line:r,character:i}),this.skip(2),null;if(e!=="/"||t!=="*"&&t!=="/")return null;if(t==="/")return this.skip(this.input.length),s("//",n);var o="";if(t==="*"){this.inComment=!0,this.skip(2);while(this.peek()!=="*"||this.peek(1)!=="/")if(this.peek()===""){o+="\n";if(!this.nextLine())return this.trigger("error",{code:"E017",line:r,character:i}),this.inComment=!1,s("/*",o,{isMultiline:!0,isMalformed:!0})}else o+=this.peek(),this.skip();return this.skip(2),this.inComment=!1,s("/*",o,{isMultiline:!0})}},scanKeyword:function(){var e=/^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input),t=["if","in","do","var","for","new","try","let","this","else","case","void","with","enum","while","break","catch","throw","const","yield","class","super","return","typeof","delete","switch","export","import","default","finally","extends","function","continue","debugger","instanceof"];return e&&t.indexOf(e[0])>=0?{type:l.Keyword,value:e[0]}:null},scanIdentifier:function(){function i(e){return e>256}function s(e){return e>256}function o(e){return/^[0-9a-fA-F]$/.test(e)}var e="",t=0,n,r,u=function(){t+=1;if(this.peek(t)!=="u")return null;var e=this.peek(t+1),n=this.peek(t+2),r=this.peek(t+3),i=this.peek(t+4),u;return o(e)&&o(n)&&o(r)&&o(i)?(u=parseInt(e+n+r+i,16),f[u]||s(u)?(t+=5,"\\u"+e+n+r+i):null):null}.bind(this),c=function(){var e=this.peek(t),n=e.charCodeAt(0);return n===92?u():n<128?a[n]?(t+=1,e):null:i(n)?(t+=1,e):null}.bind(this),h=function(){var e=this.peek(t),n=e.charCodeAt(0);return n===92?u():n<128?f[n]?(t+=1,e):null:s(n)?(t+=1,e):null}.bind(this);r=c();if(r===null)return null;e=r;for(;;){r=h();if(r===null)break;e+=r}switch(e){case"true":case"false":n=l.BooleanLiteral;break;case"null":n=l.NullLiteral;break;default:n=l.Identifier}return{type:n,value:e}},scanNumericLiteral:function(){function s(e){return/^[0-9]$/.test(e)}function o(e){return/^[0-7]$/.test(e)}function u(e){return/^[0-9a-fA-F]$/.test(e)}function a(e){return e==="$"||e==="_"||e==="\\"||e>="a"&&e<="z"||e>="A"&&e<="Z"}var e=0,t="",n=this.input.length,r=this.peek(e),i;if(r!=="."&&!s(r))return null;if(r!=="."){t=this.peek(e),e+=1,r=this.peek(e);if(t==="0"){if(r==="x"||r==="X"){e+=1,t+=r;while(e<n){r=this.peek(e);if(!u(r))break;t+=r,e+=1}if(t.length<=2)return{type:l.NumericLiteral,value:t,isMalformed:!0};if(e<n){r=this.peek(e);if(a(r))return null}return{type:l.NumericLiteral,value:t,base:16,isMalformed:!1}}if(o(r)){e+=1,t+=r,i=!1;while(e<n){r=this.peek(e);if(s(r))i=!0;else if(!o(r))break;t+=r,e+=1}if(e<n){r=this.peek(e);if(a(r))return null}return{type:l.NumericLiteral,value:t,base:8,isMalformed:!1}}s(r)&&(e+=1,t+=r)}while(e<n){r=this.peek(e);if(!s(r))break;t+=r,e+=1}}if(r==="."){t+=r,e+=1;while(e<n){r=this.peek(e);if(!s(r))break;t+=r,e+=1}}if(r==="e"||r==="E"){t+=r,e+=1,r=this.peek(e);if(r==="+"||r==="-")t+=this.peek(e),e+=1;r=this.peek(e);if(!s(r))return null;t+=r,e+=1;while(e<n){r=this.peek(e);if(!s(r))break;t+=r,e+=1}}if(e<n){r=this.peek(e);if(a(r))return null}return{type:l.NumericLiteral,value:t,base:10,isMalformed:!isFinite(t)}},scanTemplateLiteral:function(){if(!o.option.esnext||this.peek()!=="`")return null;var e=this.line,t=this.char,n=1,r="";this.skip();while(this.peek()!=="`"){while(this.peek()===""){if(!this.nextLine())return this.trigger("error",{code:"E052",line:e,character:t}),{type:l.TemplateLiteral,value:r,isUnclosed:!0};r+="\n"}var i=this.peek();this.skip(n),r+=i}return this.skip(),{type:l.TemplateLiteral,value:r,isUnclosed:!1}},scanStringLiteral:function(e){var t=this.peek();if(t!=='"'&&t!=="'")return null;this.triggerAsync("warning",{code:"W108",line:this.line,character:this.char},e,function(){return o.jsonMode&&t!=='"'});var n="",r=this.line,i=this.char,s=!1;this.skip();e:while(this.peek()!==t){while(this.peek()===""){s?(s=!1,this.triggerAsync("warning",{code:"W043",line:this.line,character:this.char},e,function(){return!o.option.multistr}),this.triggerAsync("warning",{code:"W042",line:this.line,character:this.char},e,function(){return o.jsonMode&&o.option.multistr})):this.trigger("warning",{code:"W112",line:this.line,character:this.char});if(!this.nextLine())return this.trigger("error",{code:"E029",line:r,character:i}),{type:l.StringLiteral,value:n,isUnclosed:!0,quote:t};if(this.peek()==t)break e}s=!1;var u=this.peek(),a=1;u<" "&&this.trigger("warning",{code:"W113",line:this.line,character:this.char,data:["<non-printable>"]});if(u==="\\"){this.skip(),u=this.peek();switch(u){case"'":this.triggerAsync("warning",{code:"W114",line:this.line,character:this.char,data:["\\'"]},e,function(){return o.jsonMode});break;case"b":u="\\b";break;case"f":u="\\f";break;case"n":u="\\n";break;case"r":u="\\r";break;case"t":u="\\t";break;case"0":u="\\0";var f=parseInt(this.peek(1),10);this.triggerAsync("warning",{code:"W115",line:this.line,character:this.char},e,function(){return f>=0&&f<=7&&o.directive["use strict"]});break;case"u":u=String.fromCharCode(parseInt(this.input.substr(1,4),16)),a=5;break;case"v":this.triggerAsync("warning",{code:"W114",line:this.line,character:this.char,data:["\\v"]},e,function(){return o.jsonMode}),u="";break;case"x":var c=parseInt(this.input.substr(1,2),16);this.triggerAsync("warning",{code:"W114",line:this.line,character:this.char,data:["\\x-"]},e,function(){return o.jsonMode}),u=String.fromCharCode(c),a=3;break;case"\\":u="\\\\";break;case'"':u='\\"';break;case"/":break;case"":s=!0,u="";break;case"!":if(n.slice(n.length-2)==="<")break;default:this.trigger("warning",{code:"W044",line:this.line,character:this.char})}}n+=u,this.skip(a)}return this.skip(),{type:l.StringLiteral,value:n,isUnclosed:!1,quote:t}},scanRegExp:function(){var e=0,t=this.input.length,n=this.peek(),r=n,i="",s=[],o=!1,u=!1,a,f=function(){n<" "&&(o=!0,this.trigger("warning",{code:"W048",line:this.line,character:this.char})),n==="<"&&(o=!0,this.trigger("warning",{code:"W049",line:this.line,character:this.char,data:[n]}))}.bind(this);if(!this.prereg||n!=="/")return null;e+=1,a=!1;while(e<t){n=this.peek(e),r+=n,i+=n;if(u){n==="]"&&(this.peek(e-1)!=="\\"||this.peek(e-2)==="\\")&&(u=!1),n==="\\"&&(e+=1,n=this.peek(e),i+=n,r+=n,f()),e+=1;continue}if(n==="\\"){e+=1,n=this.peek(e),i+=n,r+=n,f();if(n==="/"){e+=1;continue}if(n==="["){e+=1;continue}}if(n==="["){u=!0,e+=1;continue}if(n==="/"){i=i.substr(0,i.length-1),a=!0,e+=1;break}e+=1}if(!a)return this.trigger("error",{code:"E015",line:this.line,character:this.from}),void this.trigger("fatal",{line:this.line,from:this.from});while(e<t){n=this.peek(e);if(!/[gim]/.test(n))break;s.push(n),r+=n,e+=1}try{new RegExp(i,s.join(""))}catch(c){o=!0,this.trigger("error",{code:"E016",line:this.line,character:this.char,data:[c.message]})}return{type:l.RegExp,value:r,flags:s,isMalformed:o}},scanNonBreakingSpaces:function(){return o.option.nonbsp?this.input.search(/(\u00A0)/):-1},scanUnsafeChars:function(){return this.input.search(s.unsafeChars)},next:function(e){this.from=this.char;var t;if(/\s/.test(this.peek())){t=this.char;while(/\s/.test(this.peek()))this.from+=1,this.skip()}var n=this.scanComments()||this.scanStringLiteral(e)||this.scanTemplateLiteral();return n?n:(n=this.scanRegExp()||this.scanPunctuator()||this.scanKeyword()||this.scanIdentifier()||this.scanNumericLiteral(),n?(this.skip(n.value.length),n):null)},nextLine:function(){var e;if(this.line>=this.getLines().length)return!1;this.input=this.getLines()[this.line],this.line+=1,this.char=1,this.from=1;var t=this.input.trim(),n=function(){return r.some(arguments,function(e){return t.indexOf(e)===0})},i=function(){return r.some(arguments,function(e){return t.indexOf(e,t.length-e.length)!==-1})};o.ignoreLinterErrors===!0&&!n("/*","//")&&!i("*/")&&(this.input=""),e=this.scanNonBreakingSpaces(),e>=0&&this.trigger("warning",{code:"W125",line:this.line,character:e+1}),this.input=this.input.replace(/\t/g,o.tab),e=this.scanUnsafeChars(),e>=0&&this.trigger("warning",{code:"W100",line:this.line,character:e});if(o.option.maxlen&&o.option.maxlen<this.input.length){var u=this.inComment||n.call(t,"//")||n.call(t,"/*"),a=!u||!s.maxlenException.test(t);a&&this.trigger("warning",{code:"W101",line:this.line,character:this.input.length})}return!0},start:function(){this.nextLine()},token:function(){function n(e,t){if(!e.reserved)return!1;var n=e.meta;if(n&&n.isFutureReservedWord&&o.option.inES5()){if(!n.es5)return!1;if(n.strictOnly&&!o.option.strict&&!o.directive["use strict"])return!1;if(t)return!1}return!0}var e=c(),t,i=function(t,i,s){var u;t!=="(endline)"&&t!=="(end)"&&(this.prereg=!1);if(t==="(punctuator)"){switch(i){case".":case")":case"~":case"#":case"]":this.prereg=!1;break;default:this.prereg=!0}u=Object.create(o.syntax[i]||o.syntax["(error)"])}if(t==="(identifier)"){if(i==="return"||i==="case"||i==="typeof")this.prereg=!0;r.has(o.syntax,i)&&(u=Object.create(o.syntax[i]||o.syntax["(error)"]),n(u,s&&t==="(identifier)")||(u=null))}return u||(u=Object.create(o.syntax[t])),u.identifier=t==="(identifier)",u.type=u.type||t,u.value=i,u.line=this.line,u.character=this.char,u.from=this.from,s&&u.identifier&&(u.isProperty=s),u.check=e.check,u}.bind(this);for(;;){if(!this.input.length)return i(this.nextLine()?"(endline)":"(end)","");t=this.next(e);if(!t){this.input.length&&(this.trigger("error",{code:"E024",line:this.line,character:this.char,data:[this.peek()]}),this.input="");continue}switch(t.type){case l.StringLiteral:return this.triggerAsync("String",{line:this.line,"char":this.char,from:this.from,value:t.value,quote:t.quote},e,function(){return!0}),i("(string)",t.value);case l.TemplateLiteral:return this.trigger("Template",{line:this.line,"char":this.char,from:this.from,value:t.value}),i("(template)",t.value);case l.Identifier:this.trigger("Identifier",{line:this.line,"char":this.char,from:this.form,name:t.value,isProperty:o.tokens.curr.id==="."});case l.Keyword:case l.NullLiteral:case l.BooleanLiteral:return i("(identifier)",t.value,o.tokens.curr.id===".");case l.NumericLiteral:return t.isMalformed&&this.trigger("warning",{code:"W045",line:this.line,character:this.char,data:[t.value]}),this.triggerAsync("warning",{code:"W114",line:this.line,character:this.char,data:["0x-"]},e,function(){return t.base===16&&o.jsonMode}),this.triggerAsync("warning",{code:"W115",line:this.line,character:this.char},e,function(){return o.directive["use strict"]&&t.base===8}),this.trigger("Number",{line:this.line,"char":this.char,from:this.from,value:t.value,base:t.base,isMalformed:t.malformed}),i("(number)",t.value);case l.RegExp:return i("(regexp)",t.value);case l.Comment:o.tokens.curr.comment=!0;if(t.isSpecial)return{id:"(comment)",value:t.value,body:t.body,type:t.commentType,isSpecial:t.isSpecial,line:this.line,character:this.char,from:this.from};break;case"":break;default:return i("(punctuator)",t.value)}}}},n.Lexer=h},{"../data/ascii-identifier-data.js":1,"./reg.js":6,"./state.js":7,events:10,underscore:2}],5:[function(e,t,n){"use strict";var r=e("underscore"),i={E001:"Bad option: '{a}'.",E002:"Bad option value.",E003:"Expected a JSON value.",E004:"Input is neither a string nor an array of strings.",E005:"Input is empty.",E006:"Unexpected early end of program.",E007:'Missing "use strict" statement.',E008:"Strict violation.",E009:"Option 'validthis' can't be used in a global scope.",E010:"'with' is not allowed in strict mode.",E011:"const '{a}' has already been declared.",E012:"const '{a}' is initialized to 'undefined'.",E013:"Attempting to override '{a}' which is a constant.",E014:"A regular expression literal can be confused with '/='.",E015:"Unclosed regular expression.",E016:"Invalid regular expression.",E017:"Unclosed comment.",E018:"Unbegun comment.",E019:"Unmatched '{a}'.",E020:"Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.",E021:"Expected '{a}' and instead saw '{b}'.",E022:"Line breaking error '{a}'.",E023:"Missing '{a}'.",E024:"Unexpected '{a}'.",E025:"Missing ':' on a case clause.",E026:"Missing '}' to match '{' from line {a}.",E027:"Missing ']' to match '[' from line {a}.",E028:"Illegal comma.",E029:"Unclosed string.",E030:"Expected an identifier and instead saw '{a}'.",E031:"Bad assignment.",E032:"Expected a small integer or 'false' and instead saw '{a}'.",E033:"Expected an operator and instead saw '{a}'.",E034:"get/set are ES5 features.",E035:"Missing property name.",E036:"Expected to see a statement and instead saw a block.",E037:null,E038:null,E039:"Function declarations are not invocable. Wrap the whole function invocation in parens.",E040:"Each value should have its own case label.",E041:"Unrecoverable syntax error.",E042:"Stopping.",E043:"Too many errors.",E044:null,E045:"Invalid for each loop.",E046:"A yield statement shall be within a generator function (with syntax: `function*`)",E047:null,E048:"Let declaration not directly within block.",E049:"A {a} cannot be named '{b}'.",E050:"Mozilla requires the yield expression to be parenthesized here.",E051:"Regular parameters cannot come after default parameters.",E052:"Unclosed template literal."},s={W001:"'hasOwnProperty' is a really bad name.",W002:"Value of '{a}' may be overwritten in IE 8 and earlier.",W003:"'{a}' was used before it was defined.",W004:"'{a}' is already defined.",W005:"A dot following a number can be confused with a decimal point.",W006:"Confusing minuses.",W007:"Confusing plusses.",W008:"A leading decimal point can be confused with a dot: '{a}'.",W009:"The array literal notation [] is preferable.",W010:"The object literal notation {} is preferable.",W011:null,W012:null,W013:null,W014:"Bad line breaking before '{a}'.",W015:null,W016:"Unexpected use of '{a}'.",W017:"Bad operand.",W018:"Confusing use of '{a}'.",W019:"Use the isNaN function to compare with NaN.",W020:"Read only.",W021:"'{a}' is a function.",W022:"Do not assign to the exception parameter.",W023:"Expected an identifier in an assignment and instead saw a function invocation.",W024:"Expected an identifier and instead saw '{a}' (a reserved word).",W025:"Missing name in function declaration.",W026:"Inner functions should be listed at the top of the outer function.",W027:"Unreachable '{a}' after '{b}'.",W028:"Label '{a}' on {b} statement.",W030:"Expected an assignment or function call and instead saw an expression.",W031:"Do not use 'new' for side effects.",W032:"Unnecessary semicolon.",W033:"Missing semicolon.",W034:'Unnecessary directive "{a}".',W035:"Empty block.",W036:"Unexpected /*member '{a}'.",W037:"'{a}' is a statement label.",W038:"'{a}' used out of scope.",W039:"'{a}' is not allowed.",W040:"Possible strict violation.",W041:"Use '{a}' to compare with '{b}'.",W042:"Avoid EOL escaping.",W043:"Bad escaping of EOL. Use option multistr if needed.",W044:"Bad or unnecessary escaping.",W045:"Bad number '{a}'.",W046:"Don't use extra leading zeros '{a}'.",W047:"A trailing decimal point can be confused with a dot: '{a}'.",W048:"Unexpected control character in regular expression.",W049:"Unexpected escaped character '{a}' in regular expression.",W050:"JavaScript URL.",W051:"Variables should not be deleted.",W052:"Unexpected '{a}'.",W053:"Do not use {a} as a constructor.",W054:"The Function constructor is a form of eval.",W055:"A constructor name should start with an uppercase letter.",W056:"Bad constructor.",W057:"Weird construction. Is 'new' necessary?",W058:"Missing '()' invoking a constructor.",W059:"Avoid arguments.{a}.",W060:"document.write can be a form of eval.",W061:"eval can be harmful.",W062:"Wrap an immediate function invocation in parens to assist the reader in understanding that the expression is the result of a function, and not the function itself.",W063:"Math is not a function.",W064:"Missing 'new' prefix when invoking a constructor.",W065:"Missing radix parameter.",W066:"Implied eval. Consider passing a function instead of a string.",W067:"Bad invocation.",W068:"Wrapping non-IIFE function literals in parens is unnecessary.",W069:"['{a}'] is better written in dot notation.",W070:"Extra comma. (it breaks older versions of IE)",W071:"This function has too many statements. ({a})",W072:"This function has too many parameters. ({a})",W073:"Blocks are nested too deeply. ({a})",W074:"This function's cyclomatic complexity is too high. ({a})",W075:"Duplicate key '{a}'.",W076:"Unexpected parameter '{a}' in get {b} function.",W077:"Expected a single parameter in set {a} function.",W078:"Setter is defined without getter.",W079:"Redefinition of '{a}'.",W080:"It's not necessary to initialize '{a}' to 'undefined'.",W081:null,W082:"Function declarations should not be placed in blocks. Use a function expression or move the statement to the top of the outer function.",W083:"Don't make functions within a loop.",W084:"Assignment in conditional expression",W085:"Don't use 'with'.",W086:"Expected a 'break' statement before '{a}'.",W087:"Forgotten 'debugger' statement?",W088:"Creating global 'for' variable. Should be 'for (var {a} ...'.",W089:"The body of a for in should be wrapped in an if statement to filter unwanted properties from the prototype.",W090:"'{a}' is not a statement label.",W091:"'{a}' is out of scope.",W093:"Did you mean to return a conditional instead of an assignment?",W094:"Unexpected comma.",W095:"Expected a string and instead saw {a}.",W096:"The '{a}' key may produce unexpected results.",W097:'Use the function form of "use strict".',W098:"'{a}' is defined but never used.",W099:null,W100:"This character may get silently deleted by one or more browsers.",W101:"Line is too long.",W102:null,W103:"The '{a}' property is deprecated.",W104:"'{a}' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).",W105:"Unexpected {a} in '{b}'.",W106:"Identifier '{a}' is not in camel case.",W107:"Script URL.",W108:"Strings must use doublequote.",W109:"Strings must use singlequote.",W110:"Mixed double and single quotes.",W112:"Unclosed string.",W113:"Control character in string: {a}.",W114:"Avoid {a}.",W115:"Octal literals are not allowed in strict mode.",W116:"Expected '{a}' and instead saw '{b}'.",W117:"'{a}' is not defined.",W118:"'{a}' is only available in Mozilla JavaScript extensions (use moz option).",W119:"'{a}' is only available in ES6 (use esnext option).",W120:"You might be leaking a variable ({a}) here.",W121:"Extending prototype of native object: '{a}'.",W122:"Invalid typeof value '{a}'",W123:"'{a}' is already defined in outer scope.",W124:"A generator function shall contain a yield statement.",W125:"This line contains non-breaking spaces: http://jshint.com/doc/options/#nonbsp"},o={I001:"Comma warnings can be turned off with 'laxcomma'.",I002:null,I003:"ES5 option is now set per default"};n.errors={},n.warnings={},n.info={},r.each(i,function(e,t){n.errors[t]={code:t,desc:e}}),r.each(s,function(e,t){n.warnings[t]={code:t,desc:e}}),r.each(o,function(e,t){n.info[t]={code:t,desc:e}})},{underscore:2}],6:[function(e,t,n){"use string";n.unsafeString=/@cc|<\/?|script|\]\s*\]|<\s*!|&lt/i,n.unsafeChars=/[\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/,n.needEsc=/[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/,n.needEscGlobal=/[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,n.starSlash=/\*\//,n.identifier=/^([a-zA-Z_$][a-zA-Z0-9_$]*)$/,n.javascriptURL=/^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i,n.fallsThrough=/^\s*\/\*\s*falls?\sthrough\s*\*\/\s*$/,n.maxlenException=/^(?:(?:\/\/|\/\*|\*) ?)?[^ ]+$/},{}],7:[function(e,t,n){"use strict";var r={syntax:{},reset:function(){this.tokens={prev:null,next:null,curr:null},this.option={},this.ignored={},this.directive={},this.jsonMode=!1,this.jsonWarnings=[],this.lines=[],this.tab="",this.cache={},this.ignoredLines={},this.ignoreLinterErrors=!1}};n.state=r},{}],8:[function(e,t,n){"use strict";n.register=function(e){e.on("Identifier",function(n){if(e.getOption("proto"))return;n.name==="__proto__"&&e.warn("W103",{line:n.line,"char":n.char,data:[n.name]})}),e.on("Identifier",function(n){if(e.getOption("iterator"))return;n.name==="__iterator__"&&e.warn("W104",{line:n.line,"char":n.char,data:[n.name]})}),e.on("Identifier",function(n){if(!e.getOption("camelcase"))return;n.name.replace(/^_+|_+$/g,"").indexOf("_")>-1&&!n.name.match(/^[A-Z0-9_]*$/)&&e.warn("W106",{line:n.line,"char":n.from,data:[n.name]})}),e.on("String",function(n){var r=e.getOption("quotmark"),i;if(!r)return;r==="single"&&n.quote!=="'"&&(i="W109"),r==="double"&&n.quote!=='"'&&(i="W108"),r===!0&&(e.getCache("quotmark")||e.setCache("quotmark",n.quote),e.getCache("quotmark")!==n.quote&&(i="W110")),i&&e.warn(i,{line:n.line,"char":n.char})}),e.on("Number",function(n){n.value.charAt(0)==="."&&e.warn("W008",{line:n.line,"char":n.char,data:[n.value]}),n.value.substr(n.value.length-1)==="."&&e.warn("W047",{line:n.line,"char":n.char,data:[n.value]}),/^00+/.test(n.value)&&e.warn("W046",{line:n.line,"char":n.char,data:[n.value]})}),e.on("String",function(n){var r=/^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;if(e.getOption("scripturl"))return;r.test(n.value)&&e.warn("W107",{line:n.line,"char":n.char})})}},{}],9:[function(e,t,n){"use strict";n.reservedVars={arguments:!1,NaN:!1},n.ecmaIdentifiers={Array:!1,Boolean:!1,Date:!1,decodeURI:!1,decodeURIComponent:!1,encodeURI:!1,encodeURIComponent:!1,Error:!1,eval:!1,EvalError:!1,Function:!1,hasOwnProperty:!1,isFinite:!1,isNaN:!1,JSON:!1,Math:!1,Number:!1,Object:!1,parseInt:!1,parseFloat:!1,RangeError:!1,ReferenceError:!1,RegExp:!1,String:!1,SyntaxError:!1,TypeError:!1,URIError:!1},n.newEcmaIdentifiers={Set:!1,Map:!1,WeakMap:!1,WeakSet:!1,Proxy:!1,Promise:!1},n.browser={Audio:!1,Blob:!1,addEventListener:!1,applicationCache:!1,atob:!1,blur:!1,btoa:!1,CanvasGradient:!1,CanvasPattern:!1,CanvasRenderingContext2D:!1,clearInterval:!1,clearTimeout:!1,close:!1,closed:!1,CustomEvent:!1,DOMParser:!1,defaultStatus:!1,document:!1,Element:!1,ElementTimeControl:!1,event:!1,FileReader:!1,FormData:!1,focus:!1,frames:!1,getComputedStyle:!1,HTMLElement:!1,HTMLAnchorElement:!1,HTMLBaseElement:!1,HTMLBlockquoteElement:!1,HTMLBodyElement:!1,HTMLBRElement:!1,HTMLButtonElement:!1,HTMLCanvasElement:!1,HTMLDirectoryElement:!1,HTMLDivElement:!1,HTMLDListElement:!1,HTMLFieldSetElement:!1,HTMLFontElement:!1,HTMLFormElement:!1,HTMLFrameElement:!1,HTMLFrameSetElement:!1,HTMLHeadElement:!1,HTMLHeadingElement:!1,HTMLHRElement:!1,HTMLHtmlElement:!1,HTMLIFrameElement:!1,HTMLImageElement:!1,HTMLInputElement:!1,HTMLIsIndexElement:!1,HTMLLabelElement:!1,HTMLLayerElement:!1,HTMLLegendElement:!1,HTMLLIElement:!1,HTMLLinkElement:!1,HTMLMapElement:!1,HTMLMenuElement:!1,HTMLMetaElement:!1,HTMLModElement:!1,HTMLObjectElement:!1,HTMLOListElement:!1,HTMLOptGroupElement:!1,HTMLOptionElement:!1,HTMLParagraphElement:!1,HTMLParamElement:!1,HTMLPreElement:!1,HTMLQuoteElement:!1,HTMLScriptElement:!1,HTMLSelectElement:!1,HTMLStyleElement:!1,HTMLTableCaptionElement:!1,HTMLTableCellElement:!1,HTMLTableColElement:!1,HTMLTableElement:!1,HTMLTableRowElement:!1,HTMLTableSectionElement:!1,HTMLTextAreaElement:!1,HTMLTitleElement:!1,HTMLUListElement:!1,HTMLVideoElement:!1,history:!1,Image:!1,length:!1,localStorage:!1,location:!1,matchMedia:!1,MessageChannel:!1,MessageEvent:!1,MessagePort:!1,MouseEvent:!1,moveBy:!1,moveTo:!1,MutationObserver:!1,name:!1,Node:!1,NodeFilter:!1,NodeList:!1,navigator:!1,onbeforeunload:!0,onblur:!0,onerror:!0,onfocus:!0,onload:!0,onresize:!0,onunload:!0,open:!1,openDatabase:!1,opener:!1,Option:!1,parent:!1,print:!1,removeEventListener:!1,resizeBy:!1,resizeTo:!1,screen:!1,scroll:!1,scrollBy:!1,scrollTo:!1,sessionStorage:!1,setInterval:!1,setTimeout:!1,SharedWorker:!1,status:!1,SVGAElement:!1,SVGAltGlyphDefElement:!1,SVGAltGlyphElement:!1,SVGAltGlyphItemElement:!1,SVGAngle:!1,SVGAnimateColorElement:!1,SVGAnimateElement:!1,SVGAnimateMotionElement:!1,SVGAnimateTransformElement:!1,SVGAnimatedAngle:!1,SVGAnimatedBoolean:!1,SVGAnimatedEnumeration:!1,SVGAnimatedInteger:!1,SVGAnimatedLength:!1,SVGAnimatedLengthList:!1,SVGAnimatedNumber:!1,SVGAnimatedNumberList:!1,SVGAnimatedPathData:!1,SVGAnimatedPoints:!1,SVGAnimatedPreserveAspectRatio:!1,SVGAnimatedRect:!1,SVGAnimatedString:!1,SVGAnimatedTransformList:!1,SVGAnimationElement:!1,SVGCSSRule:!1,SVGCircleElement:!1,SVGClipPathElement:!1,SVGColor:!1,SVGColorProfileElement:!1,SVGColorProfileRule:!1,SVGComponentTransferFunctionElement:!1,SVGCursorElement:!1,SVGDefsElement:!1,SVGDescElement:!1,SVGDocument:!1,SVGElement:!1,SVGElementInstance:!1,SVGElementInstanceList:!1,SVGEllipseElement:!1,SVGExternalResourcesRequired:!1,SVGFEBlendElement:!1,SVGFEColorMatrixElement:!1,SVGFEComponentTransferElement:!1,SVGFECompositeElement:!1,SVGFEConvolveMatrixElement:!1,SVGFEDiffuseLightingElement:!1,SVGFEDisplacementMapElement:!1,SVGFEDistantLightElement:!1,SVGFEFloodElement:!1,SVGFEFuncAElement:!1,SVGFEFuncBElement:!1,SVGFEFuncGElement:!1,SVGFEFuncRElement:!1,SVGFEGaussianBlurElement:!1,SVGFEImageElement:!1,SVGFEMergeElement:!1,SVGFEMergeNodeElement:!1,SVGFEMorphologyElement:!1,SVGFEOffsetElement:!1,SVGFEPointLightElement:!1,SVGFESpecularLightingElement:!1,SVGFESpotLightElement:!1,SVGFETileElement:!1,SVGFETurbulenceElement:!1,SVGFilterElement:!1,SVGFilterPrimitiveStandardAttributes:!1,SVGFitToViewBox:!1,SVGFontElement:!1,SVGFontFaceElement:!1,SVGFontFaceFormatElement:!1,SVGFontFaceNameElement:!1,SVGFontFaceSrcElement:!1,SVGFontFaceUriElement:!1,SVGForeignObjectElement:!1,SVGGElement:!1,SVGGlyphElement:!1,SVGGlyphRefElement:!1,SVGGradientElement:!1,SVGHKernElement:!1,SVGICCColor:!1,SVGImageElement:!1,SVGLangSpace:!1,SVGLength:!1,SVGLengthList:!1,SVGLineElement:!1,SVGLinearGradientElement:!1,SVGLocatable:!1,SVGMPathElement:!1,SVGMarkerElement:!1,SVGMaskElement:!1,SVGMatrix:!1,SVGMetadataElement:!1,SVGMissingGlyphElement:!1,SVGNumber:!1,SVGNumberList:!1,SVGPaint:!1,SVGPathElement:!1,SVGPathSeg:!1,SVGPathSegArcAbs:!1,SVGPathSegArcRel:!1,SVGPathSegClosePath:!1,SVGPathSegCurvetoCubicAbs:!1,SVGPathSegCurvetoCubicRel:!1,SVGPathSegCurvetoCubicSmoothAbs:!1,SVGPathSegCurvetoCubicSmoothRel:!1,SVGPathSegCurvetoQuadraticAbs:!1,SVGPathSegCurvetoQuadraticRel:!1,SVGPathSegCurvetoQuadraticSmoothAbs:!1,SVGPathSegCurvetoQuadraticSmoothRel:!1,SVGPathSegLinetoAbs:!1,SVGPathSegLinetoHorizontalAbs:!1,SVGPathSegLinetoHorizontalRel:!1,SVGPathSegLinetoRel:!1,SVGPathSegLinetoVerticalAbs:!1,SVGPathSegLinetoVerticalRel:!1,SVGPathSegList:!1,SVGPathSegMovetoAbs:!1,SVGPathSegMovetoRel:!1,SVGPatternElement:!1,SVGPoint:!1,SVGPointList:!1,SVGPolygonElement:!1,SVGPolylineElement:!1,SVGPreserveAspectRatio:!1,SVGRadialGradientElement:!1,SVGRect:!1,SVGRectElement:!1,SVGRenderingIntent:!1,SVGSVGElement:!1,SVGScriptElement:!1,SVGSetElement:!1,SVGStopElement:!1,SVGStringList:!1,SVGStylable:!1,SVGStyleElement:!1,SVGSwitchElement:!1,SVGSymbolElement:!1,SVGTRefElement:!1,SVGTSpanElement:!1,SVGTests:!1,SVGTextContentElement:!1,SVGTextElement:!1,SVGTextPathElement:!1,SVGTextPositioningElement:!1,SVGTitleElement:!1,SVGTransform:!1,SVGTransformList:!1,SVGTransformable:!1,SVGURIReference:!1,SVGUnitTypes:!1,SVGUseElement:!1,SVGVKernElement:!1,SVGViewElement:!1,SVGViewSpec:!1,SVGZoomAndPan:!1,TimeEvent:!1,top:!1,URL:!1,WebSocket:!1,window:!1,Worker:!1,XMLHttpRequest:!1,XMLSerializer:!1,XPathEvaluator:!1,XPathException:!1,XPathExpression:!1,XPathNamespace:!1,XPathNSResolver:!1,XPathResult:!1},n.devel={alert:!1,confirm:!1,console:!1,Debug:!1,opera:!1,prompt:!1},n.worker={importScripts:!0,postMessage:!0,self:!0},n.nonstandard={escape:!1,unescape:!1},n.couch={require:!1,respond:!1,getRow:!1,emit:!1,send:!1,start:!1,sum:!1,log:!1,exports:!1,module:!1,provides:!1},n.node={__filename:!1,__dirname:!1,GLOBAL:!1,global:!1,module:!1,require:!1,Buffer:!0,console:!0,exports:!0,process:!0,setTimeout:!0,clearTimeout:!0,setInterval:!0,clearInterval:!0,setImmediate:!0,clearImmediate:!0},n.phantom={phantom:!0,require:!0,WebPage:!0,console:!0,exports:!0},n.qunit={asyncTest:!1,deepEqual:!1,equal:!1,expect:!1,module:!1,notDeepEqual:!1,notEqual:!1,notPropEqual:!1,notStrictEqual:!1,ok:!1,propEqual:!1,QUnit:!1,raises:!1,start:!1,stop:!1,strictEqual:!1,test:!1,"throws":!1},n.rhino={defineClass:!1,deserialize:!1,gc:!1,help:!1,importClass:!1,importPackage:!1,java:!1,load:!1,loadClass:!1,Packages:!1,print:!1,quit:!1,readFile:!1,readUrl:!1,runCommand:!1,seal:!1,serialize:!1,spawn:!1,sync:!1,toint32:!1,version:!1},n.shelljs={target:!1,echo:!1,exit:!1,cd:!1,pwd:!1,ls:!1,find:!1,cp:!1,rm:!1,mv:!1,mkdir:!1,test:!1,cat:!1,sed:!1,grep:!1,which:!1,dirs:!1,pushd:!1,popd:!1,env:!1,exec:!1,chmod:!1,config:!1,error:!1,tempdir:!1},n.typed={ArrayBuffer:!1,ArrayBufferView:!1,DataView:!1,Float32Array:!1,Float64Array:!1,Int16Array:!1,Int32Array:!1,Int8Array:!1,Uint16Array:!1,Uint32Array:!1,Uint8Array:!1,Uint8ClampedArray:!1},n.wsh={ActiveXObject:!0,Enumerator:!0,GetObject:!0,ScriptEngine:!0,ScriptEngineBuildVersion:!0,ScriptEngineMajorVersion:!0,ScriptEngineMinorVersion:!0,VBArray:!0,WSH:!0,WScript:!0,XDomainRequest:!0},n.dojo={dojo:!1,dijit:!1,dojox:!1,define:!1,require:!1},n.jquery={$:!1,jQuery:!1},n.mootools={$:!1,$$:!1,Asset:!1,Browser:!1,Chain:!1,Class:!1,Color:!1,Cookie:!1,Core:!1,Document:!1,DomReady:!1,DOMEvent:!1,DOMReady:!1,Drag:!1,Element:!1,Elements:!1,Event:!1,Events:!1,Fx:!1,Group:!1,Hash:!1,HtmlTable:!1,IFrame:!1,IframeShim:!1,InputValidator:!1,instanceOf:!1,Keyboard:!1,Locale:!1,Mask:!1,MooTools:!1,Native:!1,Options:!1,OverText:!1,Request:!1,Scroller:!1,Slick:!1,Slider:!1,Sortables:!1,Spinner:!1,Swiff:!1,Tips:!1,Type:!1,typeOf:!1,URI:!1,Window:!1},n.prototypejs={$:!1,$$:!1,$A:!1,$F:!1,$H:!1,$R:!1,$break:!1,$continue:!1,$w:!1,Abstract:!1,Ajax:!1,Class:!1,Enumerable:!1,Element:!1,Event:!1,Field:!1,Form:!1,Hash:!1,Insertion:!1,ObjectRange:!1,PeriodicalExecuter:!1,Position:!1,Prototype:!1,Selector:!1,Template:!1,Toggle:!1,Try:!1,Autocompleter:!1,Builder:!1,Control:!1,Draggable:!1,Draggables:!1,Droppables:!1,Effect:!1,Sortable:!1,SortableObserver:!1,Sound:!1,Scriptaculous:!1},n.yui={YUI:!1,Y:!1,YUI_config:!1},n.mocha={describe:!1,it:!1,before:!1,after:!1,beforeEach:!1,afterEach:!1,suite:!1,test:!1,setup:!1,teardown:!1},n.jasmine={jasmine:!1,describe:!1,it:!1,xit:!1,beforeEach:!1,afterEach:!1,setFixtures:!1,loadFixtures:!1,spyOn:!1,expect:!1,runs:!1,waitsFor:!1,waits:!1}},{}],10:[function(e,t,n){function r(){this._events=this._events||{},this._maxListeners=this._maxListeners||undefined}function i(e){return typeof e=="function"}function s(e){return typeof e=="number"}function o(e){return typeof e=="object"&&e!==null}function u(e){return e===void 0}t.exports=r,r.EventEmitter=r,r.prototype._events=undefined,r.prototype._maxListeners=undefined,r.defaultMaxListeners=10,r.prototype.setMaxListeners=function(e){if(!s(e)||e<0||isNaN(e))throw TypeError("n must be a positive number");return this._maxListeners=e,this},r.prototype.emit=function(e){var t,n,r,s,a,f;this._events||(this._events={});if(e==="error")if(!this._events.error||o(this._events.error)&&!this._events.error.length)throw t=arguments[1],t instanceof Error?t:TypeError('Uncaught, unspecified "error" event.');n=this._events[e];if(u(n))return!1;if(i(n))switch(arguments.length){case 1:n.call(this);break;case 2:n.call(this,arguments[1]);break;case 3:n.call(this,arguments[1],arguments[2]);break;default:r=arguments.length,s=new Array(r-1);for(a=1;a<r;a++)s[a-1]=arguments[a];n.apply(this,s)}else if(o(n)){r=arguments.length,s=new Array(r-1);for(a=1;a<r;a++)s[a-1]=arguments[a];f=n.slice(),r=f.length;for(a=0;a<r;a++)f[a].apply(this,s)}return!0},r.prototype.addListener=function(e,t){var n;if(!i(t))throw TypeError("listener must be a function");this._events||(this._events={}),this._events.newListener&&this.emit("newListener",e,i(t.listener)?t.listener:t),this._events[e]?o(this._events[e])?this._events[e].push(t):this._events[e]=[this._events[e],t]:this._events[e]=t;if(o(this._events[e])&&!this._events[e].warned){var n;u(this._maxListeners)?n=r.defaultMaxListeners:n=this._maxListeners,n&&n>0&&this._events[e].length>n&&(this._events[e].warned=!0,console.error("(node) warning: possible EventEmitter memory leak detected. %d listeners added. Use emitter.setMaxListeners() to increase limit.",this._events[e].length),console.trace())}return this},r.prototype.on=r.prototype.addListener,r.prototype.once=function(e,t){function r(){this.removeListener(e,r),n||(n=!0,t.apply(this,arguments))}if(!i(t))throw TypeError("listener must be a function");var n=!1;return r.listener=t,this.on(e,r),this},r.prototype.removeListener=function(e,t){var n,r,s,u;if(!i(t))throw TypeError("listener must be a function");if(!this._events||!this._events[e])return this;n=this._events[e],s=n.length,r=-1;if(n===t||i(n.listener)&&n.listener===t)delete this._events[e],this._events.removeListener&&this.emit("removeListener",e,t);else if(o(n)){for(u=s;u-->0;)if(n[u]===t||n[u].listener&&n[u].listener===t){r=u;break}if(r<0)return this;n.length===1?(n.length=0,delete this._events[e]):n.splice(r,1),this._events.removeListener&&this.emit("removeListener",e,t)}return this},r.prototype.removeAllListeners=function(e){var t,n;if(!this._events)return this;if(!this._events.removeListener)return arguments.length===0?this._events={}:this._events[e]&&delete this._events[e],this;if(arguments.length===0){for(t in this._events){if(t==="removeListener")continue;this.removeAllListeners(t)}return this.removeAllListeners("removeListener"),this._events={},this}n=this._events[e];if(i(n))this.removeListener(e,n);else while(n.length)this.removeListener(e,n[n.length-1]);return delete this._events[e],this},r.prototype.listeners=function(e){var t;return!this._events||!this._events[e]?t=[]:i(this._events[e])?t=[this._events[e]]:t=this._events[e].slice(),t},r.listenerCount=function(e,t){var n;return!e._events||!e._events[t]?n=0:i(e._events[t])?n=1:n=e._events[t].length,n}},{}]},{},[3])(3)}),ace.define("ace/mode/javascript_worker",["require","exports","module","ace/lib/oop","ace/worker/mirror","ace/mode/javascript/jshint"],function(require,exports,module){"use strict";function startRegex(e){return RegExp("^("+e.join("|")+")")}var oop=require("../lib/oop"),Mirror=require("../worker/mirror").Mirror,lint=require("./javascript/jshint").JSHINT,disabledWarningsRe=startRegex(["Bad for in variable '(.+)'.",'Missing "use strict"']),errorsRe=startRegex(["Unexpected","Expected ","Confusing (plus|minus)","\\{a\\} unterminated regular expression","Unclosed ","Unmatched ","Unbegun comment","Bad invocation","Missing space after","Missing operator at"]),infoRe=startRegex(["Expected an assignment","Bad escapement of EOL","Unexpected comma","Unexpected space","Missing radix parameter.","A leading decimal point can","\\['{a}'\\] is better written in dot notation.","'{a}' used out of scope"]),JavaScriptWorker=exports.JavaScriptWorker=function(e){Mirror.call(this,e),this.setTimeout(500),this.setOptions()};oop.inherits(JavaScriptWorker,Mirror),function(){this.setOptions=function(e){this.options=e||{esnext:!0,moz:!0,devel:!0,browser:!0,node:!0,laxcomma:!0,laxbreak:!0,lastsemic:!0,onevar:!1,passfail:!1,maxerr:100,expr:!0,multistr:!0,globalstrict:!0},this.doc.getValue()&&this.deferredUpdate.schedule(100)},this.changeOptions=function(e){oop.mixin(this.options,e),this.doc.getValue()&&this.deferredUpdate.schedule(100)},this.isValidJS=function(str){try{eval("throw 0;"+str)}catch(e){if(e===0)return!0}return!1},this.onUpdate=function(){var e=this.doc.getValue();e=e.replace(/^#!.*\n/,"\n");if(!e){this.sender.emit("jslint",[]);return}var t=[],n=this.isValidJS(e)?"warning":"error";lint(e,this.options);var r=lint.errors,i=!1;for(var s=0;s<r.length;s++){var o=r[s];if(!o)continue;var u=o.raw,a="warning";if(u=="Missing semicolon."){var f=o.evidence.substr(o.character);f=f.charAt(f.search(/\S/)),n=="error"&&f&&/[\w\d{(['"]/.test(f)?(o.reason='Missing ";" before statement',a="error"):a="info"}else{if(disabledWarningsRe.test(u))continue;infoRe.test(u)?a="info":errorsRe.test(u)?(i=!0,a=n):u=="'{a}' is not defined."?a="warning":u=="'{a}' is defined but never used."&&(a="info")}t.push({row:o.line-1,column:o.character-1,text:o.reason,type:a,raw:u}),i}this.sender.emit("jslint",t)}}.call(JavaScriptWorker.prototype)}),ace.define("ace/lib/es5-shim",["require","exports","module"],function(e,t,n){function r(){}function w(e){try{return Object.defineProperty(e,"sentinel",{}),"sentinel"in e}catch(t){}}function H(e){return e=+e,e!==e?e=0:e!==0&&e!==1/0&&e!==-1/0&&(e=(e>0||-1)*Math.floor(Math.abs(e))),e}function B(e){var t=typeof e;return e===null||t==="undefined"||t==="boolean"||t==="number"||t==="string"}function j(e){var t,n,r;if(B(e))return e;n=e.valueOf;if(typeof n=="function"){t=n.call(e);if(B(t))return t}r=e.toString;if(typeof r=="function"){t=r.call(e);if(B(t))return t}throw new TypeError}Function.prototype.bind||(Function.prototype.bind=function(t){var n=this;if(typeof n!="function")throw new TypeError("Function.prototype.bind called on incompatible "+n);var i=u.call(arguments,1),s=function(){if(this instanceof s){var e=n.apply(this,i.concat(u.call(arguments)));return Object(e)===e?e:this}return n.apply(t,i.concat(u.call(arguments)))};return n.prototype&&(r.prototype=n.prototype,s.prototype=new r,r.prototype=null),s});var i=Function.prototype.call,s=Array.prototype,o=Object.prototype,u=s.slice,a=i.bind(o.toString),f=i.bind(o.hasOwnProperty),l,c,h,p,d;if(d=f(o,"__defineGetter__"))l=i.bind(o.__defineGetter__),c=i.bind(o.__defineSetter__),h=i.bind(o.__lookupGetter__),p=i.bind(o.__lookupSetter__);if([1,2].splice(0).length!=2)if(!function(){function e(e){var t=new Array(e+2);return t[0]=t[1]=0,t}var t=[],n;t.splice.apply(t,e(20)),t.splice.apply(t,e(26)),n=t.length,t.splice(5,0,"XXX"),n+1==t.length;if(n+1==t.length)return!0}())Array.prototype.splice=function(e,t){var n=this.length;e>0?e>n&&(e=n):e==void 0?e=0:e<0&&(e=Math.max(n+e,0)),e+t<n||(t=n-e);var r=this.slice(e,e+t),i=u.call(arguments,2),s=i.length;if(e===n)s&&this.push.apply(this,i);else{var o=Math.min(t,n-e),a=e+o,f=a+s-o,l=n-a,c=n-o;if(f<a)for(var h=0;h<l;++h)this[f+h]=this[a+h];else if(f>a)for(h=l;h--;)this[f+h]=this[a+h];if(s&&e===c)this.length=c,this.push.apply(this,i);else{this.length=c+s;for(h=0;h<s;++h)this[e+h]=i[h]}}return r};else{var v=Array.prototype.splice;Array.prototype.splice=function(e,t){return arguments.length?v.apply(this,[e===void 0?0:e,t===void 0?this.length-e:t].concat(u.call(arguments,2))):[]}}Array.isArray||(Array.isArray=function(t){return a(t)=="[object Array]"});var m=Object("a"),g=m[0]!="a"||!(0 in m);Array.prototype.forEach||(Array.prototype.forEach=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=arguments[1],s=-1,o=r.length>>>0;if(a(t)!="[object Function]")throw new TypeError;while(++s<o)s in r&&t.call(i,r[s],s,n)}),Array.prototype.map||(Array.prototype.map=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=Array(i),o=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var u=0;u<i;u++)u in r&&(s[u]=t.call(o,r[u],u,n));return s}),Array.prototype.filter||(Array.prototype.filter=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=[],o,u=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var f=0;f<i;f++)f in r&&(o=r[f],t.call(u,o,f,n)&&s.push(o));return s}),Array.prototype.every||(Array.prototype.every=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var o=0;o<i;o++)if(o in r&&!t.call(s,r[o],o,n))return!1;return!0}),Array.prototype.some||(Array.prototype.some=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0,s=arguments[1];if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");for(var o=0;o<i;o++)if(o in r&&t.call(s,r[o],o,n))return!0;return!1}),Array.prototype.reduce||(Array.prototype.reduce=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0;if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");if(!i&&arguments.length==1)throw new TypeError("reduce of empty array with no initial value");var s=0,o;if(arguments.length>=2)o=arguments[1];else do{if(s in r){o=r[s++];break}if(++s>=i)throw new TypeError("reduce of empty array with no initial value")}while(!0);for(;s<i;s++)s in r&&(o=t.call(void 0,o,r[s],s,n));return o}),Array.prototype.reduceRight||(Array.prototype.reduceRight=function(t){var n=F(this),r=g&&a(this)=="[object String]"?this.split(""):n,i=r.length>>>0;if(a(t)!="[object Function]")throw new TypeError(t+" is not a function");if(!i&&arguments.length==1)throw new TypeError("reduceRight of empty array with no initial value");var s,o=i-1;if(arguments.length>=2)s=arguments[1];else do{if(o in r){s=r[o--];break}if(--o<0)throw new TypeError("reduceRight of empty array with no initial value")}while(!0);do o in this&&(s=t.call(void 0,s,r[o],o,n));while(o--);return s});if(!Array.prototype.indexOf||[0,1].indexOf(1,2)!=-1)Array.prototype.indexOf=function(t){var n=g&&a(this)=="[object String]"?this.split(""):F(this),r=n.length>>>0;if(!r)return-1;var i=0;arguments.length>1&&(i=H(arguments[1])),i=i>=0?i:Math.max(0,r+i);for(;i<r;i++)if(i in n&&n[i]===t)return i;return-1};if(!Array.prototype.lastIndexOf||[0,1].lastIndexOf(0,-3)!=-1)Array.prototype.lastIndexOf=function(t){var n=g&&a(this)=="[object String]"?this.split(""):F(this),r=n.length>>>0;if(!r)return-1;var i=r-1;arguments.length>1&&(i=Math.min(i,H(arguments[1]))),i=i>=0?i:r-Math.abs(i);for(;i>=0;i--)if(i in n&&t===n[i])return i;return-1};Object.getPrototypeOf||(Object.getPrototypeOf=function(t){return t.__proto__||(t.constructor?t.constructor.prototype:o)});if(!Object.getOwnPropertyDescriptor){var y="Object.getOwnPropertyDescriptor called on a non-object: ";Object.getOwnPropertyDescriptor=function(t,n){if(typeof t!="object"&&typeof t!="function"||t===null)throw new TypeError(y+t);if(!f(t,n))return;var r,i,s;r={enumerable:!0,configurable:!0};if(d){var u=t.__proto__;t.__proto__=o;var i=h(t,n),s=p(t,n);t.__proto__=u;if(i||s)return i&&(r.get=i),s&&(r.set=s),r}return r.value=t[n],r}}Object.getOwnPropertyNames||(Object.getOwnPropertyNames=function(t){return Object.keys(t)});if(!Object.create){var b;Object.prototype.__proto__===null?b=function(){return{__proto__:null}}:b=function(){var e={};for(var t in e)e[t]=null;return e.constructor=e.hasOwnProperty=e.propertyIsEnumerable=e.isPrototypeOf=e.toLocaleString=e.toString=e.valueOf=e.__proto__=null,e},Object.create=function(t,n){var r;if(t===null)r=b();else{if(typeof t!="object")throw new TypeError("typeof prototype["+typeof t+"] != 'object'");var i=function(){};i.prototype=t,r=new i,r.__proto__=t}return n!==void 0&&Object.defineProperties(r,n),r}}if(Object.defineProperty){var E=w({}),S=typeof document=="undefined"||w(document.createElement("div"));if(!E||!S)var x=Object.defineProperty}if(!Object.defineProperty||x){var T="Property description must be an object: ",N="Object.defineProperty called on non-object: ",C="getters & setters can not be defined on this javascript engine";Object.defineProperty=function(t,n,r){if(typeof t!="object"&&typeof t!="function"||t===null)throw new TypeError(N+t);if(typeof r!="object"&&typeof r!="function"||r===null)throw new TypeError(T+r);if(x)try{return x.call(Object,t,n,r)}catch(i){}if(f(r,"value"))if(d&&(h(t,n)||p(t,n))){var s=t.__proto__;t.__proto__=o,delete t[n],t[n]=r.value,t.__proto__=s}else t[n]=r.value;else{if(!d)throw new TypeError(C);f(r,"get")&&l(t,n,r.get),f(r,"set")&&c(t,n,r.set)}return t}}Object.defineProperties||(Object.defineProperties=function(t,n){for(var r in n)f(n,r)&&Object.defineProperty(t,r,n[r]);return t}),Object.seal||(Object.seal=function(t){return t}),Object.freeze||(Object.freeze=function(t){return t});try{Object.freeze(function(){})}catch(k){Object.freeze=function(t){return function(n){return typeof n=="function"?n:t(n)}}(Object.freeze)}Object.preventExtensions||(Object.preventExtensions=function(t){return t}),Object.isSealed||(Object.isSealed=function(t){return!1}),Object.isFrozen||(Object.isFrozen=function(t){return!1}),Object.isExtensible||(Object.isExtensible=function(t){if(Object(t)===t)throw new TypeError;var n="";while(f(t,n))n+="?";t[n]=!0;var r=f(t,n);return delete t[n],r});if(!Object.keys){var L=!0,A=["toString","toLocaleString","valueOf","hasOwnProperty","isPrototypeOf","propertyIsEnumerable","constructor"],O=A.length;for(var M in{toString:null})L=!1;Object.keys=function I(e){if(typeof e!="object"&&typeof e!="function"||e===null)throw new TypeError("Object.keys called on a non-object");var I=[];for(var t in e)f(e,t)&&I.push(t);if(L)for(var n=0,r=O;n<r;n++){var i=A[n];f(e,i)&&I.push(i)}return I}}Date.now||(Date.now=function(){return(new Date).getTime()});var _="	\n\f\r \u00a0\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\ufeff";if(!String.prototype.trim||_.trim()){_="["+_+"]";var D=new RegExp("^"+_+_+"*"),P=new RegExp(_+_+"*$");String.prototype.trim=function(){return String(this).replace(D,"").replace(P,"")}}var F=function(e){if(e==null)throw new TypeError("can't convert "+e+" to object");return Object(e)}})
\ No newline at end of file
diff --git a/v3/js/codemirror/codemirror.js b/v3/js/codemirror/codemirror.js
new file mode 100644
index 000000000..0ab217711
--- /dev/null
+++ b/v3/js/codemirror/codemirror.js
@@ -0,0 +1,7526 @@
+// This is CodeMirror (http://codemirror.net), a code editor
+// implemented in JavaScript on top of the browser's DOM.
+//
+// You can find some technical background for some of the code below
+// at http://marijnhaverbeke.nl/blog/#cm-internals .
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    module.exports = mod();
+  else if (typeof define == "function" && define.amd) // AMD
+    return define([], mod);
+  else // Plain browser env
+    this.CodeMirror = mod();
+})(function() {
+  "use strict";
+
+  // BROWSER SNIFFING
+
+  // Kludges for bugs and behavior differences that can't be feature
+  // detected are enabled based on userAgent etc sniffing.
+
+  var gecko = /gecko\/\d/i.test(navigator.userAgent);
+  // ie_uptoN means Internet Explorer version N or lower
+  var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
+  var ie_upto7 = ie_upto10 && (document.documentMode == null || document.documentMode < 8);
+  var ie_upto8 = ie_upto10 && (document.documentMode == null || document.documentMode < 9);
+  var ie_upto9 = ie_upto10 && (document.documentMode == null || document.documentMode < 10);
+  var ie_11up = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent);
+  var ie = ie_upto10 || ie_11up;
+  var webkit = /WebKit\//.test(navigator.userAgent);
+  var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
+  var chrome = /Chrome\//.test(navigator.userAgent);
+  var presto = /Opera\//.test(navigator.userAgent);
+  var safari = /Apple Computer/.test(navigator.vendor);
+  var khtml = /KHTML\//.test(navigator.userAgent);
+  var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
+  var phantom = /PhantomJS/.test(navigator.userAgent);
+
+  var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
+  // This is woefully incomplete. Suggestions for alternative methods welcome.
+  var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
+  var mac = ios || /Mac/.test(navigator.platform);
+  var windows = /win/i.test(navigator.platform);
+
+  var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
+  if (presto_version) presto_version = Number(presto_version[1]);
+  if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
+  // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
+  var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
+  var captureRightClick = gecko || (ie && !ie_upto8);
+
+  // Optimize some code when these features are not used.
+  var sawReadOnlySpans = false, sawCollapsedSpans = false;
+
+  // EDITOR CONSTRUCTOR
+
+  // A CodeMirror instance represents an editor. This is the object
+  // that user code is usually dealing with.
+
+  function CodeMirror(place, options) {
+    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
+
+    this.options = options = options || {};
+    // Determine effective options based on given values and defaults.
+    copyObj(defaults, options, false);
+    setGuttersForLineNumbers(options);
+
+    var doc = options.value;
+    if (typeof doc == "string") doc = new Doc(doc, options.mode);
+    this.doc = doc;
+
+    var display = this.display = new Display(place, doc);
+    display.wrapper.CodeMirror = this;
+    updateGutters(this);
+    themeChanged(this);
+    if (options.lineWrapping)
+      this.display.wrapper.className += " CodeMirror-wrap";
+    if (options.autofocus && !mobile) focusInput(this);
+
+    this.state = {
+      keyMaps: [],  // stores maps added by addKeyMap
+      overlays: [], // highlighting overlays, as added by addOverlay
+      modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
+      overwrite: false, focused: false,
+      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
+      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
+      draggingText: false,
+      highlight: new Delayed() // stores highlight worker timeout
+    };
+
+    // Override magic textarea content restore that IE sometimes does
+    // on our hidden textarea on reload
+    if (ie_upto10) setTimeout(bind(resetInput, this, true), 20);
+
+    registerEventHandlers(this);
+
+    var cm = this;
+    runInOp(this, function() {
+      cm.curOp.forceUpdate = true;
+      attachDoc(cm, doc);
+
+      if ((options.autofocus && !mobile) || activeElt() == display.input)
+        setTimeout(bind(onFocus, cm), 20);
+      else
+        onBlur(cm);
+
+      for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
+        optionHandlers[opt](cm, options[opt], Init);
+      for (var i = 0; i < initHooks.length; ++i) initHooks[i](cm);
+    });
+  }
+
+  // DISPLAY CONSTRUCTOR
+
+  // The display handles the DOM integration, both for input reading
+  // and content drawing. It holds references to DOM nodes and
+  // display-related state.
+
+  function Display(place, doc) {
+    var d = this;
+
+    // The semihidden textarea that is focused when the editor is
+    // focused, and receives input.
+    var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
+    // The textarea is kept positioned near the cursor to prevent the
+    // fact that it'll be scrolled into view on input from scrolling
+    // our fake cursor out of view. On webkit, when wrap=off, paste is
+    // very slow. So make the area wide instead.
+    if (webkit) input.style.width = "1000px";
+    else input.setAttribute("wrap", "off");
+    // If border: 0; -- iOS fails to open keyboard (issue #1287)
+    if (ios) input.style.border = "1px solid black";
+    input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false");
+
+    // Wraps and hides input textarea
+    d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
+    // The fake scrollbar elements.
+    d.scrollbarH = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
+    d.scrollbarV = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
+    // Covers bottom-right square when both scrollbars are present.
+    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
+    // Covers bottom of gutter when coverGutterNextToScrollbar is on
+    // and h scrollbar is present.
+    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
+    // Will contain the actual code, positioned to cover the viewport.
+    d.lineDiv = elt("div", null, "CodeMirror-code");
+    // Elements are added to these to represent selection and cursors.
+    d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
+    d.cursorDiv = elt("div", null, "CodeMirror-cursors");
+    // A visibility: hidden element used to find the size of things.
+    d.measure = elt("div", null, "CodeMirror-measure");
+    // When lines outside of the viewport are measured, they are drawn in this.
+    d.lineMeasure = elt("div", null, "CodeMirror-measure");
+    // Wraps everything that needs to exist inside the vertically-padded coordinate system
+    d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
+                      null, "position: relative; outline: none");
+    // Moved around its parent to cover visible view.
+    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
+    // Set to the height of the document, allowing scrolling.
+    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
+    // Behavior of elts with overflow: auto and padding is
+    // inconsistent across browsers. This is used to ensure the
+    // scrollable area is big enough.
+    d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
+    // Will contain the gutters, if any.
+    d.gutters = elt("div", null, "CodeMirror-gutters");
+    d.lineGutter = null;
+    // Actual scrollable element.
+    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
+    d.scroller.setAttribute("tabIndex", "-1");
+    // The element in which the editor lives.
+    d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
+                            d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
+
+    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
+    if (ie_upto7) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
+    // Needed to hide big blue blinking cursor on Mobile Safari
+    if (ios) input.style.width = "0px";
+    if (!webkit) d.scroller.draggable = true;
+    // Needed to handle Tab key in KHTML
+    if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
+    // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
+    if (ie_upto7) d.scrollbarH.style.minHeight = d.scrollbarV.style.minWidth = "18px";
+
+    if (place.appendChild) place.appendChild(d.wrapper);
+    else place(d.wrapper);
+
+    // Current rendered range (may be bigger than the view window).
+    d.viewFrom = d.viewTo = doc.first;
+    // Information about the rendered lines.
+    d.view = [];
+    // Holds info about a single rendered line when it was rendered
+    // for measurement, while not in view.
+    d.externalMeasured = null;
+    // Empty space (in pixels) above the view
+    d.viewOffset = 0;
+    d.lastSizeC = 0;
+    d.updateLineNumbers = null;
+
+    // Used to only resize the line number gutter when necessary (when
+    // the amount of lines crosses a boundary that makes its width change)
+    d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
+    // See readInput and resetInput
+    d.prevInput = "";
+    // Set to true when a non-horizontal-scrolling line widget is
+    // added. As an optimization, line widget aligning is skipped when
+    // this is false.
+    d.alignWidgets = false;
+    // Flag that indicates whether we expect input to appear real soon
+    // now (after some event like 'keypress' or 'input') and are
+    // polling intensively.
+    d.pollingFast = false;
+    // Self-resetting timeout for the poller
+    d.poll = new Delayed();
+
+    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
+
+    // Tracks when resetInput has punted to just putting a short
+    // string into the textarea instead of the full selection.
+    d.inaccurateSelection = false;
+
+    // Tracks the maximum line length so that the horizontal scrollbar
+    // can be kept static when scrolling.
+    d.maxLine = null;
+    d.maxLineLength = 0;
+    d.maxLineChanged = false;
+
+    // Used for measuring wheel scrolling granularity
+    d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
+
+    // True when shift is held down.
+    d.shift = false;
+  }
+
+  // STATE UPDATES
+
+  // Used to get the editor into a consistent state again when options change.
+
+  function loadMode(cm) {
+    cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
+    resetModeState(cm);
+  }
+
+  function resetModeState(cm) {
+    cm.doc.iter(function(line) {
+      if (line.stateAfter) line.stateAfter = null;
+      if (line.styles) line.styles = null;
+    });
+    cm.doc.frontier = cm.doc.first;
+    startWorker(cm, 100);
+    cm.state.modeGen++;
+    if (cm.curOp) regChange(cm);
+  }
+
+  function wrappingChanged(cm) {
+    if (cm.options.lineWrapping) {
+      addClass(cm.display.wrapper, "CodeMirror-wrap");
+      cm.display.sizer.style.minWidth = "";
+    } else {
+      rmClass(cm.display.wrapper, "CodeMirror-wrap");
+      findMaxLine(cm);
+    }
+    estimateLineHeights(cm);
+    regChange(cm);
+    clearCaches(cm);
+    setTimeout(function(){updateScrollbars(cm);}, 100);
+  }
+
+  // Returns a function that estimates the height of a line, to use as
+  // first approximation until the line becomes visible (and is thus
+  // properly measurable).
+  function estimateHeight(cm) {
+    var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
+    var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
+    return function(line) {
+      if (lineIsHidden(cm.doc, line)) return 0;
+
+      var widgetsHeight = 0;
+      if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
+        if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
+      }
+
+      if (wrapping)
+        return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
+      else
+        return widgetsHeight + th;
+    };
+  }
+
+  function estimateLineHeights(cm) {
+    var doc = cm.doc, est = estimateHeight(cm);
+    doc.iter(function(line) {
+      var estHeight = est(line);
+      if (estHeight != line.height) updateLineHeight(line, estHeight);
+    });
+  }
+
+  function keyMapChanged(cm) {
+    var map = keyMap[cm.options.keyMap], style = map.style;
+    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
+      (style ? " cm-keymap-" + style : "");
+  }
+
+  function themeChanged(cm) {
+    cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
+      cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+    clearCaches(cm);
+  }
+
+  function guttersChanged(cm) {
+    updateGutters(cm);
+    regChange(cm);
+    setTimeout(function(){alignHorizontally(cm);}, 20);
+  }
+
+  // Rebuild the gutter elements, ensure the margin to the left of the
+  // code matches their width.
+  function updateGutters(cm) {
+    var gutters = cm.display.gutters, specs = cm.options.gutters;
+    removeChildren(gutters);
+    for (var i = 0; i < specs.length; ++i) {
+      var gutterClass = specs[i];
+      var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
+      if (gutterClass == "CodeMirror-linenumbers") {
+        cm.display.lineGutter = gElt;
+        gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
+      }
+    }
+    gutters.style.display = i ? "" : "none";
+    updateGutterSpace(cm);
+  }
+
+  function updateGutterSpace(cm) {
+    var width = cm.display.gutters.offsetWidth;
+    cm.display.sizer.style.marginLeft = width + "px";
+    cm.display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0;
+  }
+
+  // Compute the character length of a line, taking into account
+  // collapsed ranges (see markText) that might hide parts, and join
+  // other lines onto it.
+  function lineLength(line) {
+    if (line.height == 0) return 0;
+    var len = line.text.length, merged, cur = line;
+    while (merged = collapsedSpanAtStart(cur)) {
+      var found = merged.find(0, true);
+      cur = found.from.line;
+      len += found.from.ch - found.to.ch;
+    }
+    cur = line;
+    while (merged = collapsedSpanAtEnd(cur)) {
+      var found = merged.find(0, true);
+      len -= cur.text.length - found.from.ch;
+      cur = found.to.line;
+      len += cur.text.length - found.to.ch;
+    }
+    return len;
+  }
+
+  // Find the longest line in the document.
+  function findMaxLine(cm) {
+    var d = cm.display, doc = cm.doc;
+    d.maxLine = getLine(doc, doc.first);
+    d.maxLineLength = lineLength(d.maxLine);
+    d.maxLineChanged = true;
+    doc.iter(function(line) {
+      var len = lineLength(line);
+      if (len > d.maxLineLength) {
+        d.maxLineLength = len;
+        d.maxLine = line;
+      }
+    });
+  }
+
+  // Make sure the gutters options contains the element
+  // "CodeMirror-linenumbers" when the lineNumbers option is true.
+  function setGuttersForLineNumbers(options) {
+    var found = indexOf(options.gutters, "CodeMirror-linenumbers");
+    if (found == -1 && options.lineNumbers) {
+      options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
+    } else if (found > -1 && !options.lineNumbers) {
+      options.gutters = options.gutters.slice(0);
+      options.gutters.splice(found, 1);
+    }
+  }
+
+  // SCROLLBARS
+
+  // Prepare DOM reads needed to update the scrollbars. Done in one
+  // shot to minimize update/measure roundtrips.
+  function measureForScrollbars(cm) {
+    var scroll = cm.display.scroller;
+    return {
+      clientHeight: scroll.clientHeight,
+      barHeight: cm.display.scrollbarV.clientHeight,
+      scrollWidth: scroll.scrollWidth, clientWidth: scroll.clientWidth,
+      barWidth: cm.display.scrollbarH.clientWidth,
+      docHeight: Math.round(cm.doc.height + paddingVert(cm.display))
+    };
+  }
+
+  // Re-synchronize the fake scrollbars with the actual size of the
+  // content.
+  function updateScrollbars(cm, measure) {
+    if (!measure) measure = measureForScrollbars(cm);
+    var d = cm.display;
+    var scrollHeight = measure.docHeight + scrollerCutOff;
+    var needsH = measure.scrollWidth > measure.clientWidth;
+    var needsV = scrollHeight > measure.clientHeight;
+    if (needsV) {
+      d.scrollbarV.style.display = "block";
+      d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
+      // A bug in IE8 can cause this value to be negative, so guard it.
+      d.scrollbarV.firstChild.style.height =
+        Math.max(0, scrollHeight - measure.clientHeight + (measure.barHeight || d.scrollbarV.clientHeight)) + "px";
+    } else {
+      d.scrollbarV.style.display = "";
+      d.scrollbarV.firstChild.style.height = "0";
+    }
+    if (needsH) {
+      d.scrollbarH.style.display = "block";
+      d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
+      d.scrollbarH.firstChild.style.width =
+        (measure.scrollWidth - measure.clientWidth + (measure.barWidth || d.scrollbarH.clientWidth)) + "px";
+    } else {
+      d.scrollbarH.style.display = "";
+      d.scrollbarH.firstChild.style.width = "0";
+    }
+    if (needsH && needsV) {
+      d.scrollbarFiller.style.display = "block";
+      d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
+    } else d.scrollbarFiller.style.display = "";
+    if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
+      d.gutterFiller.style.display = "block";
+      d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px";
+      d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
+    } else d.gutterFiller.style.display = "";
+
+    if (!cm.state.checkedOverlayScrollbar && measure.clientHeight > 0) {
+      if (scrollbarWidth(d.measure) === 0) {
+        var w = mac && !mac_geMountainLion ? "12px" : "18px";
+        d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = w;
+        var barMouseDown = function(e) {
+          if (e_target(e) != d.scrollbarV && e_target(e) != d.scrollbarH)
+            operation(cm, onMouseDown)(e);
+        };
+        on(d.scrollbarV, "mousedown", barMouseDown);
+        on(d.scrollbarH, "mousedown", barMouseDown);
+      }
+      cm.state.checkedOverlayScrollbar = true;
+    }
+  }
+
+  // Compute the lines that are visible in a given viewport (defaults
+  // the the current scroll position). viewPort may contain top,
+  // height, and ensure (see op.scrollToPos) properties.
+  function visibleLines(display, doc, viewPort) {
+    var top = viewPort && viewPort.top != null ? viewPort.top : display.scroller.scrollTop;
+    top = Math.floor(top - paddingTop(display));
+    var bottom = viewPort && viewPort.bottom != null ? viewPort.bottom : top + display.wrapper.clientHeight;
+
+    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
+    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
+    // forces those lines into the viewport (if possible).
+    if (viewPort && viewPort.ensure) {
+      var ensureFrom = viewPort.ensure.from.line, ensureTo = viewPort.ensure.to.line;
+      if (ensureFrom < from)
+        return {from: ensureFrom,
+                to: lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)};
+      if (Math.min(ensureTo, doc.lastLine()) >= to)
+        return {from: lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight),
+                to: ensureTo};
+    }
+    return {from: from, to: to};
+  }
+
+  // LINE NUMBERS
+
+  // Re-align line numbers and gutter marks to compensate for
+  // horizontal scrolling.
+  function alignHorizontally(cm) {
+    var display = cm.display, view = display.view;
+    if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
+    var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
+    var gutterW = display.gutters.offsetWidth, left = comp + "px";
+    for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
+      if (cm.options.fixedGutter && view[i].gutter)
+        view[i].gutter.style.left = left;
+      var align = view[i].alignable;
+      if (align) for (var j = 0; j < align.length; j++)
+        align[j].style.left = left;
+    }
+    if (cm.options.fixedGutter)
+      display.gutters.style.left = (comp + gutterW) + "px";
+  }
+
+  // Used to ensure that the line number gutter is still the right
+  // size for the current document size. Returns true when an update
+  // is needed.
+  function maybeUpdateLineNumberWidth(cm) {
+    if (!cm.options.lineNumbers) return false;
+    var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
+    if (last.length != display.lineNumChars) {
+      var test = display.measure.appendChild(elt("div", [elt("div", last)],
+                                                 "CodeMirror-linenumber CodeMirror-gutter-elt"));
+      var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
+      display.lineGutter.style.width = "";
+      display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
+      display.lineNumWidth = display.lineNumInnerWidth + padding;
+      display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
+      display.lineGutter.style.width = display.lineNumWidth + "px";
+      updateGutterSpace(cm);
+      return true;
+    }
+    return false;
+  }
+
+  function lineNumberFor(options, i) {
+    return String(options.lineNumberFormatter(i + options.firstLineNumber));
+  }
+
+  // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
+  // but using getBoundingClientRect to get a sub-pixel-accurate
+  // result.
+  function compensateForHScroll(display) {
+    return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
+  }
+
+  // DISPLAY DRAWING
+
+  // Updates the display, selection, and scrollbars, using the
+  // information in display.view to find out which nodes are no longer
+  // up-to-date. Tries to bail out early when no changes are needed,
+  // unless forced is true.
+  // Returns true if an actual update happened, false otherwise.
+  function updateDisplay(cm, viewPort, forced) {
+    var oldFrom = cm.display.viewFrom, oldTo = cm.display.viewTo, updated;
+    var visible = visibleLines(cm.display, cm.doc, viewPort);
+    for (var first = true;; first = false) {
+      var oldWidth = cm.display.scroller.clientWidth;
+      if (!updateDisplayInner(cm, visible, forced)) break;
+      updated = true;
+
+      // If the max line changed since it was last measured, measure it,
+      // and ensure the document's width matches it.
+      if (cm.display.maxLineChanged && !cm.options.lineWrapping)
+        adjustContentWidth(cm);
+
+      var barMeasure = measureForScrollbars(cm);
+      updateSelection(cm);
+      setDocumentHeight(cm, barMeasure);
+      updateScrollbars(cm, barMeasure);
+      if (webkit && cm.options.lineWrapping)
+        checkForWebkitWidthBug(cm, barMeasure); // (Issue #2420)
+      if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
+        forced = true;
+        continue;
+      }
+      forced = false;
+
+      // Clip forced viewport to actual scrollable area.
+      if (viewPort && viewPort.top != null)
+        viewPort = {top: Math.min(barMeasure.docHeight - scrollerCutOff - barMeasure.clientHeight, viewPort.top)};
+      // Updated line heights might result in the drawn area not
+      // actually covering the viewport. Keep looping until it does.
+      visible = visibleLines(cm.display, cm.doc, viewPort);
+      if (visible.from >= cm.display.viewFrom && visible.to <= cm.display.viewTo)
+        break;
+    }
+
+    cm.display.updateLineNumbers = null;
+    if (updated) {
+      signalLater(cm, "update", cm);
+      if (cm.display.viewFrom != oldFrom || cm.display.viewTo != oldTo)
+        signalLater(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
+    }
+    return updated;
+  }
+
+  // Does the actual updating of the line display. Bails out
+  // (returning false) when there is nothing to be done and forced is
+  // false.
+  function updateDisplayInner(cm, visible, forced) {
+    var display = cm.display, doc = cm.doc;
+    if (!display.wrapper.offsetWidth) {
+      resetView(cm);
+      return;
+    }
+
+    // Bail out if the visible area is already rendered and nothing changed.
+    if (!forced && visible.from >= display.viewFrom && visible.to <= display.viewTo &&
+        countDirtyView(cm) == 0)
+      return;
+
+    if (maybeUpdateLineNumberWidth(cm))
+      resetView(cm);
+    var dims = getDimensions(cm);
+
+    // Compute a suitable new viewport (from & to)
+    var end = doc.first + doc.size;
+    var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
+    var to = Math.min(end, visible.to + cm.options.viewportMargin);
+    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
+    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
+    if (sawCollapsedSpans) {
+      from = visualLineNo(cm.doc, from);
+      to = visualLineEndNo(cm.doc, to);
+    }
+
+    var different = from != display.viewFrom || to != display.viewTo ||
+      display.lastSizeC != display.wrapper.clientHeight;
+    adjustView(cm, from, to);
+
+    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
+    // Position the mover div to align with the current scroll position
+    cm.display.mover.style.top = display.viewOffset + "px";
+
+    var toUpdate = countDirtyView(cm);
+    if (!different && toUpdate == 0 && !forced) return;
+
+    // For big changes, we hide the enclosing element during the
+    // update, since that speeds up the operations on most browsers.
+    var focused = activeElt();
+    if (toUpdate > 4) display.lineDiv.style.display = "none";
+    patchDisplay(cm, display.updateLineNumbers, dims);
+    if (toUpdate > 4) display.lineDiv.style.display = "";
+    // There might have been a widget with a focused element that got
+    // hidden or updated, if so re-focus it.
+    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();
+
+    // Prevent selection and cursors from interfering with the scroll
+    // width.
+    removeChildren(display.cursorDiv);
+    removeChildren(display.selectionDiv);
+
+    if (different) {
+      display.lastSizeC = display.wrapper.clientHeight;
+      startWorker(cm, 400);
+    }
+
+    updateHeightsInViewport(cm);
+
+    return true;
+  }
+
+  function adjustContentWidth(cm) {
+    var display = cm.display;
+    var width = measureChar(cm, display.maxLine, display.maxLine.text.length).left;
+    display.maxLineChanged = false;
+    var minWidth = Math.max(0, width + 3);
+    var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + minWidth + scrollerCutOff - display.scroller.clientWidth);
+    display.sizer.style.minWidth = minWidth + "px";
+    if (maxScrollLeft < cm.doc.scrollLeft)
+      setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
+  }
+
+  function setDocumentHeight(cm, measure) {
+    cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = measure.docHeight + "px";
+    cm.display.gutters.style.height = Math.max(measure.docHeight, measure.clientHeight - scrollerCutOff) + "px";
+  }
+
+
+  function checkForWebkitWidthBug(cm, measure) {
+    // Work around Webkit bug where it sometimes reserves space for a
+    // non-existing phantom scrollbar in the scroller (Issue #2420)
+    if (cm.display.sizer.offsetWidth + cm.display.gutters.offsetWidth < cm.display.scroller.clientWidth - 1) {
+      cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = "0px";
+      cm.display.gutters.style.height = measure.docHeight + "px";
+    }
+  }
+
+  // Read the actual heights of the rendered lines, and update their
+  // stored heights to match.
+  function updateHeightsInViewport(cm) {
+    var display = cm.display;
+    var prevBottom = display.lineDiv.offsetTop;
+    for (var i = 0; i < display.view.length; i++) {
+      var cur = display.view[i], height;
+      if (cur.hidden) continue;
+      if (ie_upto7) {
+        var bot = cur.node.offsetTop + cur.node.offsetHeight;
+        height = bot - prevBottom;
+        prevBottom = bot;
+      } else {
+        var box = cur.node.getBoundingClientRect();
+        height = box.bottom - box.top;
+      }
+      var diff = cur.line.height - height;
+      if (height < 2) height = textHeight(display);
+      if (diff > .001 || diff < -.001) {
+        updateLineHeight(cur.line, height);
+        updateWidgetHeight(cur.line);
+        if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
+          updateWidgetHeight(cur.rest[j]);
+      }
+    }
+  }
+
+  // Read and store the height of line widgets associated with the
+  // given line.
+  function updateWidgetHeight(line) {
+    if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
+      line.widgets[i].height = line.widgets[i].node.offsetHeight;
+  }
+
+  // Do a bulk-read of the DOM positions and sizes needed to draw the
+  // view, so that we don't interleave reading and writing to the DOM.
+  function getDimensions(cm) {
+    var d = cm.display, left = {}, width = {};
+    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
+      left[cm.options.gutters[i]] = n.offsetLeft;
+      width[cm.options.gutters[i]] = n.offsetWidth;
+    }
+    return {fixedPos: compensateForHScroll(d),
+            gutterTotalWidth: d.gutters.offsetWidth,
+            gutterLeft: left,
+            gutterWidth: width,
+            wrapperWidth: d.wrapper.clientWidth};
+  }
+
+  // Sync the actual display DOM structure with display.view, removing
+  // nodes for lines that are no longer in view, and creating the ones
+  // that are not there yet, and updating the ones that are out of
+  // date.
+  function patchDisplay(cm, updateNumbersFrom, dims) {
+    var display = cm.display, lineNumbers = cm.options.lineNumbers;
+    var container = display.lineDiv, cur = container.firstChild;
+
+    function rm(node) {
+      var next = node.nextSibling;
+      // Works around a throw-scroll bug in OS X Webkit
+      if (webkit && mac && cm.display.currentWheelTarget == node)
+        node.style.display = "none";
+      else
+        node.parentNode.removeChild(node);
+      return next;
+    }
+
+    var view = display.view, lineN = display.viewFrom;
+    // Loop over the elements in the view, syncing cur (the DOM nodes
+    // in display.lineDiv) with the view as we go.
+    for (var i = 0; i < view.length; i++) {
+      var lineView = view[i];
+      if (lineView.hidden) {
+      } else if (!lineView.node) { // Not drawn yet
+        var node = buildLineElement(cm, lineView, lineN, dims);
+        container.insertBefore(node, cur);
+      } else { // Already drawn
+        while (cur != lineView.node) cur = rm(cur);
+        var updateNumber = lineNumbers && updateNumbersFrom != null &&
+          updateNumbersFrom <= lineN && lineView.lineNumber;
+        if (lineView.changes) {
+          if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
+          updateLineForChanges(cm, lineView, lineN, dims);
+        }
+        if (updateNumber) {
+          removeChildren(lineView.lineNumber);
+          lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
+        }
+        cur = lineView.node.nextSibling;
+      }
+      lineN += lineView.size;
+    }
+    while (cur) cur = rm(cur);
+  }
+
+  // When an aspect of a line changes, a string is added to
+  // lineView.changes. This updates the relevant part of the line's
+  // DOM structure.
+  function updateLineForChanges(cm, lineView, lineN, dims) {
+    for (var j = 0; j < lineView.changes.length; j++) {
+      var type = lineView.changes[j];
+      if (type == "text") updateLineText(cm, lineView);
+      else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
+      else if (type == "class") updateLineClasses(lineView);
+      else if (type == "widget") updateLineWidgets(lineView, dims);
+    }
+    lineView.changes = null;
+  }
+
+  // Lines with gutter elements, widgets or a background class need to
+  // be wrapped, and have the extra elements added to the wrapper div
+  function ensureLineWrapped(lineView) {
+    if (lineView.node == lineView.text) {
+      lineView.node = elt("div", null, null, "position: relative");
+      if (lineView.text.parentNode)
+        lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
+      lineView.node.appendChild(lineView.text);
+      if (ie_upto7) lineView.node.style.zIndex = 2;
+    }
+    return lineView.node;
+  }
+
+  function updateLineBackground(lineView) {
+    var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
+    if (cls) cls += " CodeMirror-linebackground";
+    if (lineView.background) {
+      if (cls) lineView.background.className = cls;
+      else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
+    } else if (cls) {
+      var wrap = ensureLineWrapped(lineView);
+      lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
+    }
+  }
+
+  // Wrapper around buildLineContent which will reuse the structure
+  // in display.externalMeasured when possible.
+  function getLineContent(cm, lineView) {
+    var ext = cm.display.externalMeasured;
+    if (ext && ext.line == lineView.line) {
+      cm.display.externalMeasured = null;
+      lineView.measure = ext.measure;
+      return ext.built;
+    }
+    return buildLineContent(cm, lineView);
+  }
+
+  // Redraw the line's text. Interacts with the background and text
+  // classes because the mode may output tokens that influence these
+  // classes.
+  function updateLineText(cm, lineView) {
+    var cls = lineView.text.className;
+    var built = getLineContent(cm, lineView);
+    if (lineView.text == lineView.node) lineView.node = built.pre;
+    lineView.text.parentNode.replaceChild(built.pre, lineView.text);
+    lineView.text = built.pre;
+    if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
+      lineView.bgClass = built.bgClass;
+      lineView.textClass = built.textClass;
+      updateLineClasses(lineView);
+    } else if (cls) {
+      lineView.text.className = cls;
+    }
+  }
+
+  function updateLineClasses(lineView) {
+    updateLineBackground(lineView);
+    if (lineView.line.wrapClass)
+      ensureLineWrapped(lineView).className = lineView.line.wrapClass;
+    else if (lineView.node != lineView.text)
+      lineView.node.className = "";
+    var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
+    lineView.text.className = textClass || "";
+  }
+
+  function updateLineGutter(cm, lineView, lineN, dims) {
+    if (lineView.gutter) {
+      lineView.node.removeChild(lineView.gutter);
+      lineView.gutter = null;
+    }
+    var markers = lineView.line.gutterMarkers;
+    if (cm.options.lineNumbers || markers) {
+      var wrap = ensureLineWrapped(lineView);
+      var gutterWrap = lineView.gutter =
+        wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " +
+                              (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
+                          lineView.text);
+      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
+        lineView.lineNumber = gutterWrap.appendChild(
+          elt("div", lineNumberFor(cm.options, lineN),
+              "CodeMirror-linenumber CodeMirror-gutter-elt",
+              "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
+              + cm.display.lineNumInnerWidth + "px"));
+      if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
+        var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
+        if (found)
+          gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
+                                     dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
+      }
+    }
+  }
+
+  function updateLineWidgets(lineView, dims) {
+    if (lineView.alignable) lineView.alignable = null;
+    for (var node = lineView.node.firstChild, next; node; node = next) {
+      var next = node.nextSibling;
+      if (node.className == "CodeMirror-linewidget")
+        lineView.node.removeChild(node);
+    }
+    insertLineWidgets(lineView, dims);
+  }
+
+  // Build a line's DOM representation from scratch
+  function buildLineElement(cm, lineView, lineN, dims) {
+    var built = getLineContent(cm, lineView);
+    lineView.text = lineView.node = built.pre;
+    if (built.bgClass) lineView.bgClass = built.bgClass;
+    if (built.textClass) lineView.textClass = built.textClass;
+
+    updateLineClasses(lineView);
+    updateLineGutter(cm, lineView, lineN, dims);
+    insertLineWidgets(lineView, dims);
+    return lineView.node;
+  }
+
+  // A lineView may contain multiple logical lines (when merged by
+  // collapsed spans). The widgets for all of them need to be drawn.
+  function insertLineWidgets(lineView, dims) {
+    insertLineWidgetsFor(lineView.line, lineView, dims, true);
+    if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
+      insertLineWidgetsFor(lineView.rest[i], lineView, dims, false);
+  }
+
+  function insertLineWidgetsFor(line, lineView, dims, allowAbove) {
+    if (!line.widgets) return;
+    var wrap = ensureLineWrapped(lineView);
+    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
+      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
+      if (!widget.handleMouseEvents) node.ignoreEvents = true;
+      positionLineWidget(widget, node, lineView, dims);
+      if (allowAbove && widget.above)
+        wrap.insertBefore(node, lineView.gutter || lineView.text);
+      else
+        wrap.appendChild(node);
+      signalLater(widget, "redraw");
+    }
+  }
+
+  function positionLineWidget(widget, node, lineView, dims) {
+    if (widget.noHScroll) {
+      (lineView.alignable || (lineView.alignable = [])).push(node);
+      var width = dims.wrapperWidth;
+      node.style.left = dims.fixedPos + "px";
+      if (!widget.coverGutter) {
+        width -= dims.gutterTotalWidth;
+        node.style.paddingLeft = dims.gutterTotalWidth + "px";
+      }
+      node.style.width = width + "px";
+    }
+    if (widget.coverGutter) {
+      node.style.zIndex = 5;
+      node.style.position = "relative";
+      if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
+    }
+  }
+
+  // POSITION OBJECT
+
+  // A Pos instance represents a position within the text.
+  var Pos = CodeMirror.Pos = function(line, ch) {
+    if (!(this instanceof Pos)) return new Pos(line, ch);
+    this.line = line; this.ch = ch;
+  };
+
+  // Compare two positions, return 0 if they are the same, a negative
+  // number when a is less, and a positive number otherwise.
+  var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };
+
+  function copyPos(x) {return Pos(x.line, x.ch);}
+  function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
+  function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }
+
+  // SELECTION / CURSOR
+
+  // Selection objects are immutable. A new one is created every time
+  // the selection changes. A selection is one or more non-overlapping
+  // (and non-touching) ranges, sorted, and an integer that indicates
+  // which one is the primary selection (the one that's scrolled into
+  // view, that getCursor returns, etc).
+  function Selection(ranges, primIndex) {
+    this.ranges = ranges;
+    this.primIndex = primIndex;
+  }
+
+  Selection.prototype = {
+    primary: function() { return this.ranges[this.primIndex]; },
+    equals: function(other) {
+      if (other == this) return true;
+      if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
+      for (var i = 0; i < this.ranges.length; i++) {
+        var here = this.ranges[i], there = other.ranges[i];
+        if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
+      }
+      return true;
+    },
+    deepCopy: function() {
+      for (var out = [], i = 0; i < this.ranges.length; i++)
+        out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
+      return new Selection(out, this.primIndex);
+    },
+    somethingSelected: function() {
+      for (var i = 0; i < this.ranges.length; i++)
+        if (!this.ranges[i].empty()) return true;
+      return false;
+    },
+    contains: function(pos, end) {
+      if (!end) end = pos;
+      for (var i = 0; i < this.ranges.length; i++) {
+        var range = this.ranges[i];
+        if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
+          return i;
+      }
+      return -1;
+    }
+  };
+
+  function Range(anchor, head) {
+    this.anchor = anchor; this.head = head;
+  }
+
+  Range.prototype = {
+    from: function() { return minPos(this.anchor, this.head); },
+    to: function() { return maxPos(this.anchor, this.head); },
+    empty: function() {
+      return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
+    }
+  };
+
+  // Take an unsorted, potentially overlapping set of ranges, and
+  // build a selection out of it. 'Consumes' ranges array (modifying
+  // it).
+  function normalizeSelection(ranges, primIndex) {
+    var prim = ranges[primIndex];
+    ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
+    primIndex = indexOf(ranges, prim);
+    for (var i = 1; i < ranges.length; i++) {
+      var cur = ranges[i], prev = ranges[i - 1];
+      if (cmp(prev.to(), cur.from()) >= 0) {
+        var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
+        var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
+        if (i <= primIndex) --primIndex;
+        ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
+      }
+    }
+    return new Selection(ranges, primIndex);
+  }
+
+  function simpleSelection(anchor, head) {
+    return new Selection([new Range(anchor, head || anchor)], 0);
+  }
+
+  // Most of the external API clips given positions to make sure they
+  // actually exist within the document.
+  function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
+  function clipPos(doc, pos) {
+    if (pos.line < doc.first) return Pos(doc.first, 0);
+    var last = doc.first + doc.size - 1;
+    if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
+    return clipToLen(pos, getLine(doc, pos.line).text.length);
+  }
+  function clipToLen(pos, linelen) {
+    var ch = pos.ch;
+    if (ch == null || ch > linelen) return Pos(pos.line, linelen);
+    else if (ch < 0) return Pos(pos.line, 0);
+    else return pos;
+  }
+  function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
+  function clipPosArray(doc, array) {
+    for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
+    return out;
+  }
+
+  // SELECTION UPDATES
+
+  // The 'scroll' parameter given to many of these indicated whether
+  // the new cursor position should be scrolled into view after
+  // modifying the selection.
+
+  // If shift is held or the extend flag is set, extends a range to
+  // include a given position (and optionally a second position).
+  // Otherwise, simply returns the range between the given positions.
+  // Used for cursor motion and such.
+  function extendRange(doc, range, head, other) {
+    if (doc.cm && doc.cm.display.shift || doc.extend) {
+      var anchor = range.anchor;
+      if (other) {
+        var posBefore = cmp(head, anchor) < 0;
+        if (posBefore != (cmp(other, anchor) < 0)) {
+          anchor = head;
+          head = other;
+        } else if (posBefore != (cmp(head, other) < 0)) {
+          head = other;
+        }
+      }
+      return new Range(anchor, head);
+    } else {
+      return new Range(other || head, head);
+    }
+  }
+
+  // Extend the primary selection range, discard the rest.
+  function extendSelection(doc, head, other, options) {
+    setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
+  }
+
+  // Extend all selections (pos is an array of selections with length
+  // equal the number of selections)
+  function extendSelections(doc, heads, options) {
+    for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
+      out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
+    var newSel = normalizeSelection(out, doc.sel.primIndex);
+    setSelection(doc, newSel, options);
+  }
+
+  // Updates a single range in the selection.
+  function replaceOneSelection(doc, i, range, options) {
+    var ranges = doc.sel.ranges.slice(0);
+    ranges[i] = range;
+    setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
+  }
+
+  // Reset the selection to a single range.
+  function setSimpleSelection(doc, anchor, head, options) {
+    setSelection(doc, simpleSelection(anchor, head), options);
+  }
+
+  // Give beforeSelectionChange handlers a change to influence a
+  // selection update.
+  function filterSelectionChange(doc, sel) {
+    var obj = {
+      ranges: sel.ranges,
+      update: function(ranges) {
+        this.ranges = [];
+        for (var i = 0; i < ranges.length; i++)
+          this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
+                                     clipPos(doc, ranges[i].head));
+      }
+    };
+    signal(doc, "beforeSelectionChange", doc, obj);
+    if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
+    if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
+    else return sel;
+  }
+
+  function setSelectionReplaceHistory(doc, sel, options) {
+    var done = doc.history.done, last = lst(done);
+    if (last && last.ranges) {
+      done[done.length - 1] = sel;
+      setSelectionNoUndo(doc, sel, options);
+    } else {
+      setSelection(doc, sel, options);
+    }
+  }
+
+  // Set a new selection.
+  function setSelection(doc, sel, options) {
+    setSelectionNoUndo(doc, sel, options);
+    addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
+  }
+
+  function setSelectionNoUndo(doc, sel, options) {
+    if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
+      sel = filterSelectionChange(doc, sel);
+
+    var bias = cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1;
+    setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
+
+    if (!(options && options.scroll === false) && doc.cm)
+      ensureCursorVisible(doc.cm);
+  }
+
+  function setSelectionInner(doc, sel) {
+    if (sel.equals(doc.sel)) return;
+
+    doc.sel = sel;
+
+    if (doc.cm) {
+      doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true;
+      signalCursorActivity(doc.cm);
+    }
+    signalLater(doc, "cursorActivity", doc);
+  }
+
+  // Verify that the selection does not partially select any atomic
+  // marked ranges.
+  function reCheckSelection(doc) {
+    setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
+  }
+
+  // Return a selection that does not partially select any atomic
+  // ranges.
+  function skipAtomicInSelection(doc, sel, bias, mayClear) {
+    var out;
+    for (var i = 0; i < sel.ranges.length; i++) {
+      var range = sel.ranges[i];
+      var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
+      var newHead = skipAtomic(doc, range.head, bias, mayClear);
+      if (out || newAnchor != range.anchor || newHead != range.head) {
+        if (!out) out = sel.ranges.slice(0, i);
+        out[i] = new Range(newAnchor, newHead);
+      }
+    }
+    return out ? normalizeSelection(out, sel.primIndex) : sel;
+  }
+
+  // Ensure a given position is not inside an atomic range.
+  function skipAtomic(doc, pos, bias, mayClear) {
+    var flipped = false, curPos = pos;
+    var dir = bias || 1;
+    doc.cantEdit = false;
+    search: for (;;) {
+      var line = getLine(doc, curPos.line);
+      if (line.markedSpans) {
+        for (var i = 0; i < line.markedSpans.length; ++i) {
+          var sp = line.markedSpans[i], m = sp.marker;
+          if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
+              (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
+            if (mayClear) {
+              signal(m, "beforeCursorEnter");
+              if (m.explicitlyCleared) {
+                if (!line.markedSpans) break;
+                else {--i; continue;}
+              }
+            }
+            if (!m.atomic) continue;
+            var newPos = m.find(dir < 0 ? -1 : 1);
+            if (cmp(newPos, curPos) == 0) {
+              newPos.ch += dir;
+              if (newPos.ch < 0) {
+                if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
+                else newPos = null;
+              } else if (newPos.ch > line.text.length) {
+                if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
+                else newPos = null;
+              }
+              if (!newPos) {
+                if (flipped) {
+                  // Driven in a corner -- no valid cursor position found at all
+                  // -- try again *with* clearing, if we didn't already
+                  if (!mayClear) return skipAtomic(doc, pos, bias, true);
+                  // Otherwise, turn off editing until further notice, and return the start of the doc
+                  doc.cantEdit = true;
+                  return Pos(doc.first, 0);
+                }
+                flipped = true; newPos = pos; dir = -dir;
+              }
+            }
+            curPos = newPos;
+            continue search;
+          }
+        }
+      }
+      return curPos;
+    }
+  }
+
+  // SELECTION DRAWING
+
+  // Redraw the selection and/or cursor
+  function updateSelection(cm) {
+    var display = cm.display, doc = cm.doc;
+    var curFragment = document.createDocumentFragment();
+    var selFragment = document.createDocumentFragment();
+
+    for (var i = 0; i < doc.sel.ranges.length; i++) {
+      var range = doc.sel.ranges[i];
+      var collapsed = range.empty();
+      if (collapsed || cm.options.showCursorWhenSelecting)
+        drawSelectionCursor(cm, range, curFragment);
+      if (!collapsed)
+        drawSelectionRange(cm, range, selFragment);
+    }
+
+    // Move the hidden textarea near the cursor to prevent scrolling artifacts
+    if (cm.options.moveInputWithCursor) {
+      var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
+      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
+      var top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
+                                     headPos.top + lineOff.top - wrapOff.top));
+      var left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
+                                      headPos.left + lineOff.left - wrapOff.left));
+      display.inputDiv.style.top = top + "px";
+      display.inputDiv.style.left = left + "px";
+    }
+
+    removeChildrenAndAdd(display.cursorDiv, curFragment);
+    removeChildrenAndAdd(display.selectionDiv, selFragment);
+  }
+
+  // Draws a cursor for the given range
+  function drawSelectionCursor(cm, range, output) {
+    var pos = cursorCoords(cm, range.head, "div");
+
+    var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
+    cursor.style.left = pos.left + "px";
+    cursor.style.top = pos.top + "px";
+    cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
+
+    if (pos.other) {
+      // Secondary cursor, shown when on a 'jump' in bi-directional text
+      var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
+      otherCursor.style.display = "";
+      otherCursor.style.left = pos.other.left + "px";
+      otherCursor.style.top = pos.other.top + "px";
+      otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
+    }
+  }
+
+  // Draws the given range as a highlighted selection
+  function drawSelectionRange(cm, range, output) {
+    var display = cm.display, doc = cm.doc;
+    var fragment = document.createDocumentFragment();
+    var padding = paddingH(cm.display), leftSide = padding.left, rightSide = display.lineSpace.offsetWidth - padding.right;
+
+    function add(left, top, width, bottom) {
+      if (top < 0) top = 0;
+      top = Math.round(top);
+      bottom = Math.round(bottom);
+      fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
+                               "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
+                               "px; height: " + (bottom - top) + "px"));
+    }
+
+    function drawForLine(line, fromArg, toArg) {
+      var lineObj = getLine(doc, line);
+      var lineLen = lineObj.text.length;
+      var start, end;
+      function coords(ch, bias) {
+        return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
+      }
+
+      iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
+        var leftPos = coords(from, "left"), rightPos, left, right;
+        if (from == to) {
+          rightPos = leftPos;
+          left = right = leftPos.left;
+        } else {
+          rightPos = coords(to - 1, "right");
+          if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
+          left = leftPos.left;
+          right = rightPos.right;
+        }
+        if (fromArg == null && from == 0) left = leftSide;
+        if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
+          add(left, leftPos.top, null, leftPos.bottom);
+          left = leftSide;
+          if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
+        }
+        if (toArg == null && to == lineLen) right = rightSide;
+        if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
+          start = leftPos;
+        if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
+          end = rightPos;
+        if (left < leftSide + 1) left = leftSide;
+        add(left, rightPos.top, right - left, rightPos.bottom);
+      });
+      return {start: start, end: end};
+    }
+
+    var sFrom = range.from(), sTo = range.to();
+    if (sFrom.line == sTo.line) {
+      drawForLine(sFrom.line, sFrom.ch, sTo.ch);
+    } else {
+      var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
+      var singleVLine = visualLine(fromLine) == visualLine(toLine);
+      var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
+      var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
+      if (singleVLine) {
+        if (leftEnd.top < rightStart.top - 2) {
+          add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
+          add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
+        } else {
+          add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
+        }
+      }
+      if (leftEnd.bottom < rightStart.top)
+        add(leftSide, leftEnd.bottom, null, rightStart.top);
+    }
+
+    output.appendChild(fragment);
+  }
+
+  // Cursor-blinking
+  function restartBlink(cm) {
+    if (!cm.state.focused) return;
+    var display = cm.display;
+    clearInterval(display.blinker);
+    var on = true;
+    display.cursorDiv.style.visibility = "";
+    if (cm.options.cursorBlinkRate > 0)
+      display.blinker = setInterval(function() {
+        display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
+      }, cm.options.cursorBlinkRate);
+  }
+
+  // HIGHLIGHT WORKER
+
+  function startWorker(cm, time) {
+    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
+      cm.state.highlight.set(time, bind(highlightWorker, cm));
+  }
+
+  function highlightWorker(cm) {
+    var doc = cm.doc;
+    if (doc.frontier < doc.first) doc.frontier = doc.first;
+    if (doc.frontier >= cm.display.viewTo) return;
+    var end = +new Date + cm.options.workTime;
+    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
+
+    runInOp(cm, function() {
+    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
+      if (doc.frontier >= cm.display.viewFrom) { // Visible
+        var oldStyles = line.styles;
+        var highlighted = highlightLine(cm, line, state, true);
+        line.styles = highlighted.styles;
+        if (highlighted.classes) line.styleClasses = highlighted.classes;
+        else if (line.styleClasses) line.styleClasses = null;
+        var ischange = !oldStyles || oldStyles.length != line.styles.length;
+        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
+        if (ischange) regLineChange(cm, doc.frontier, "text");
+        line.stateAfter = copyState(doc.mode, state);
+      } else {
+        processLine(cm, line.text, state);
+        line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
+      }
+      ++doc.frontier;
+      if (+new Date > end) {
+        startWorker(cm, cm.options.workDelay);
+        return true;
+      }
+    });
+    });
+  }
+
+  // Finds the line to start with when starting a parse. Tries to
+  // find a line with a stateAfter, so that it can start with a
+  // valid state. If that fails, it returns the line with the
+  // smallest indentation, which tends to need the least context to
+  // parse correctly.
+  function findStartLine(cm, n, precise) {
+    var minindent, minline, doc = cm.doc;
+    var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
+    for (var search = n; search > lim; --search) {
+      if (search <= doc.first) return doc.first;
+      var line = getLine(doc, search - 1);
+      if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
+      var indented = countColumn(line.text, null, cm.options.tabSize);
+      if (minline == null || minindent > indented) {
+        minline = search - 1;
+        minindent = indented;
+      }
+    }
+    return minline;
+  }
+
+  function getStateBefore(cm, n, precise) {
+    var doc = cm.doc, display = cm.display;
+    if (!doc.mode.startState) return true;
+    var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
+    if (!state) state = startState(doc.mode);
+    else state = copyState(doc.mode, state);
+    doc.iter(pos, n, function(line) {
+      processLine(cm, line.text, state);
+      var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
+      line.stateAfter = save ? copyState(doc.mode, state) : null;
+      ++pos;
+    });
+    if (precise) doc.frontier = pos;
+    return state;
+  }
+
+  // POSITION MEASUREMENT
+
+  function paddingTop(display) {return display.lineSpace.offsetTop;}
+  function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
+  function paddingH(display) {
+    if (display.cachedPaddingH) return display.cachedPaddingH;
+    var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
+    var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
+    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
+    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
+    return data;
+  }
+
+  // Ensure the lineView.wrapping.heights array is populated. This is
+  // an array of bottom offsets for the lines that make up a drawn
+  // line. When lineWrapping is on, there might be more than one
+  // height.
+  function ensureLineHeights(cm, lineView, rect) {
+    var wrapping = cm.options.lineWrapping;
+    var curWidth = wrapping && cm.display.scroller.clientWidth;
+    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
+      var heights = lineView.measure.heights = [];
+      if (wrapping) {
+        lineView.measure.width = curWidth;
+        var rects = lineView.text.firstChild.getClientRects();
+        for (var i = 0; i < rects.length - 1; i++) {
+          var cur = rects[i], next = rects[i + 1];
+          if (Math.abs(cur.bottom - next.bottom) > 2)
+            heights.push((cur.bottom + next.top) / 2 - rect.top);
+        }
+      }
+      heights.push(rect.bottom - rect.top);
+    }
+  }
+
+  // Find a line map (mapping character offsets to text nodes) and a
+  // measurement cache for the given line number. (A line view might
+  // contain multiple lines when collapsed ranges are present.)
+  function mapFromLineView(lineView, line, lineN) {
+    if (lineView.line == line)
+      return {map: lineView.measure.map, cache: lineView.measure.cache};
+    for (var i = 0; i < lineView.rest.length; i++)
+      if (lineView.rest[i] == line)
+        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
+    for (var i = 0; i < lineView.rest.length; i++)
+      if (lineNo(lineView.rest[i]) > lineN)
+        return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
+  }
+
+  // Render a line into the hidden node display.externalMeasured. Used
+  // when measurement is needed for a line that's not in the viewport.
+  function updateExternalMeasurement(cm, line) {
+    line = visualLine(line);
+    var lineN = lineNo(line);
+    var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
+    view.lineN = lineN;
+    var built = view.built = buildLineContent(cm, view);
+    view.text = built.pre;
+    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
+    return view;
+  }
+
+  // Get a {top, bottom, left, right} box (in line-local coordinates)
+  // for a given character.
+  function measureChar(cm, line, ch, bias) {
+    return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
+  }
+
+  // Find a line view that corresponds to the given line number.
+  function findViewForLine(cm, lineN) {
+    if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
+      return cm.display.view[findViewIndex(cm, lineN)];
+    var ext = cm.display.externalMeasured;
+    if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
+      return ext;
+  }
+
+  // Measurement can be split in two steps, the set-up work that
+  // applies to the whole line, and the measurement of the actual
+  // character. Functions like coordsChar, that need to do a lot of
+  // measurements in a row, can thus ensure that the set-up work is
+  // only done once.
+  function prepareMeasureForLine(cm, line) {
+    var lineN = lineNo(line);
+    var view = findViewForLine(cm, lineN);
+    if (view && !view.text)
+      view = null;
+    else if (view && view.changes)
+      updateLineForChanges(cm, view, lineN, getDimensions(cm));
+    if (!view)
+      view = updateExternalMeasurement(cm, line);
+
+    var info = mapFromLineView(view, line, lineN);
+    return {
+      line: line, view: view, rect: null,
+      map: info.map, cache: info.cache, before: info.before,
+      hasHeights: false
+    };
+  }
+
+  // Given a prepared measurement object, measures the position of an
+  // actual character (or fetches it from the cache).
+  function measureCharPrepared(cm, prepared, ch, bias) {
+    if (prepared.before) ch = -1;
+    var key = ch + (bias || ""), found;
+    if (prepared.cache.hasOwnProperty(key)) {
+      found = prepared.cache[key];
+    } else {
+      if (!prepared.rect)
+        prepared.rect = prepared.view.text.getBoundingClientRect();
+      if (!prepared.hasHeights) {
+        ensureLineHeights(cm, prepared.view, prepared.rect);
+        prepared.hasHeights = true;
+      }
+      found = measureCharInner(cm, prepared, ch, bias);
+      if (!found.bogus) prepared.cache[key] = found;
+    }
+    return {left: found.left, right: found.right, top: found.top, bottom: found.bottom};
+  }
+
+  var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
+
+  function measureCharInner(cm, prepared, ch, bias) {
+    var map = prepared.map;
+
+    var node, start, end, collapse;
+    // First, search the line map for the text node corresponding to,
+    // or closest to, the target character.
+    for (var i = 0; i < map.length; i += 3) {
+      var mStart = map[i], mEnd = map[i + 1];
+      if (ch < mStart) {
+        start = 0; end = 1;
+        collapse = "left";
+      } else if (ch < mEnd) {
+        start = ch - mStart;
+        end = start + 1;
+      } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
+        end = mEnd - mStart;
+        start = end - 1;
+        if (ch >= mEnd) collapse = "right";
+      }
+      if (start != null) {
+        node = map[i + 2];
+        if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
+          collapse = bias;
+        if (bias == "left" && start == 0)
+          while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
+            node = map[(i -= 3) + 2];
+            collapse = "left";
+          }
+        if (bias == "right" && start == mEnd - mStart)
+          while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
+            node = map[(i += 3) + 2];
+            collapse = "right";
+          }
+        break;
+      }
+    }
+
+    var rect;
+    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
+      while (start && isExtendingChar(prepared.line.text.charAt(mStart + start))) --start;
+      while (mStart + end < mEnd && isExtendingChar(prepared.line.text.charAt(mStart + end))) ++end;
+      if (ie_upto8 && start == 0 && end == mEnd - mStart) {
+        rect = node.parentNode.getBoundingClientRect();
+      } else if (ie && cm.options.lineWrapping) {
+        var rects = range(node, start, end).getClientRects();
+        if (rects.length)
+          rect = rects[bias == "right" ? rects.length - 1 : 0];
+        else
+          rect = nullRect;
+      } else {
+        rect = range(node, start, end).getBoundingClientRect();
+      }
+    } else { // If it is a widget, simply get the box for the whole widget.
+      if (start > 0) collapse = bias = "right";
+      var rects;
+      if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
+        rect = rects[bias == "right" ? rects.length - 1 : 0];
+      else
+        rect = node.getBoundingClientRect();
+    }
+    if (ie_upto8 && !start && (!rect || !rect.left && !rect.right)) {
+      var rSpan = node.parentNode.getClientRects()[0];
+      if (rSpan)
+        rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
+      else
+        rect = nullRect;
+    }
+
+    var top, bot = (rect.bottom + rect.top) / 2 - prepared.rect.top;
+    var heights = prepared.view.measure.heights;
+    for (var i = 0; i < heights.length - 1; i++)
+      if (bot < heights[i]) break;
+    top = i ? heights[i - 1] : 0; bot = heights[i];
+    var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
+                  right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
+                  top: top, bottom: bot};
+    if (!rect.left && !rect.right) result.bogus = true;
+    return result;
+  }
+
+  function clearLineMeasurementCacheFor(lineView) {
+    if (lineView.measure) {
+      lineView.measure.cache = {};
+      lineView.measure.heights = null;
+      if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
+        lineView.measure.caches[i] = {};
+    }
+  }
+
+  function clearLineMeasurementCache(cm) {
+    cm.display.externalMeasure = null;
+    removeChildren(cm.display.lineMeasure);
+    for (var i = 0; i < cm.display.view.length; i++)
+      clearLineMeasurementCacheFor(cm.display.view[i]);
+  }
+
+  function clearCaches(cm) {
+    clearLineMeasurementCache(cm);
+    cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
+    if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
+    cm.display.lineNumChars = null;
+  }
+
+  function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
+  function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }
+
+  // Converts a {top, bottom, left, right} box from line-local
+  // coordinates into another coordinate system. Context may be one of
+  // "line", "div" (display.lineDiv), "local"/null (editor), or "page".
+  function intoCoordSystem(cm, lineObj, rect, context) {
+    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
+      var size = widgetHeight(lineObj.widgets[i]);
+      rect.top += size; rect.bottom += size;
+    }
+    if (context == "line") return rect;
+    if (!context) context = "local";
+    var yOff = heightAtLine(lineObj);
+    if (context == "local") yOff += paddingTop(cm.display);
+    else yOff -= cm.display.viewOffset;
+    if (context == "page" || context == "window") {
+      var lOff = cm.display.lineSpace.getBoundingClientRect();
+      yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
+      var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
+      rect.left += xOff; rect.right += xOff;
+    }
+    rect.top += yOff; rect.bottom += yOff;
+    return rect;
+  }
+
+  // Coverts a box from "div" coords to another coordinate system.
+  // Context may be "window", "page", "div", or "local"/null.
+  function fromCoordSystem(cm, coords, context) {
+    if (context == "div") return coords;
+    var left = coords.left, top = coords.top;
+    // First move into "page" coordinate system
+    if (context == "page") {
+      left -= pageScrollX();
+      top -= pageScrollY();
+    } else if (context == "local" || !context) {
+      var localBox = cm.display.sizer.getBoundingClientRect();
+      left += localBox.left;
+      top += localBox.top;
+    }
+
+    var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
+    return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
+  }
+
+  function charCoords(cm, pos, context, lineObj, bias) {
+    if (!lineObj) lineObj = getLine(cm.doc, pos.line);
+    return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
+  }
+
+  // Returns a box for a given cursor position, which may have an
+  // 'other' property containing the position of the secondary cursor
+  // on a bidi boundary.
+  function cursorCoords(cm, pos, context, lineObj, preparedMeasure) {
+    lineObj = lineObj || getLine(cm.doc, pos.line);
+    if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
+    function get(ch, right) {
+      var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left");
+      if (right) m.left = m.right; else m.right = m.left;
+      return intoCoordSystem(cm, lineObj, m, context);
+    }
+    function getBidi(ch, partPos) {
+      var part = order[partPos], right = part.level % 2;
+      if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
+        part = order[--partPos];
+        ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
+        right = true;
+      } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
+        part = order[++partPos];
+        ch = bidiLeft(part) - part.level % 2;
+        right = false;
+      }
+      if (right && ch == part.to && ch > part.from) return get(ch - 1);
+      return get(ch, right);
+    }
+    var order = getOrder(lineObj), ch = pos.ch;
+    if (!order) return get(ch);
+    var partPos = getBidiPartAt(order, ch);
+    var val = getBidi(ch, partPos);
+    if (bidiOther != null) val.other = getBidi(ch, bidiOther);
+    return val;
+  }
+
+  // Used to cheaply estimate the coordinates for a position. Used for
+  // intermediate scroll updates.
+  function estimateCoords(cm, pos) {
+    var left = 0, pos = clipPos(cm.doc, pos);
+    if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
+    var lineObj = getLine(cm.doc, pos.line);
+    var top = heightAtLine(lineObj) + paddingTop(cm.display);
+    return {left: left, right: left, top: top, bottom: top + lineObj.height};
+  }
+
+  // Positions returned by coordsChar contain some extra information.
+  // xRel is the relative x position of the input coordinates compared
+  // to the found position (so xRel > 0 means the coordinates are to
+  // the right of the character position, for example). When outside
+  // is true, that means the coordinates lie outside the line's
+  // vertical range.
+  function PosWithInfo(line, ch, outside, xRel) {
+    var pos = Pos(line, ch);
+    pos.xRel = xRel;
+    if (outside) pos.outside = true;
+    return pos;
+  }
+
+  // Compute the character position closest to the given coordinates.
+  // Input must be lineSpace-local ("div" coordinate system).
+  function coordsChar(cm, x, y) {
+    var doc = cm.doc;
+    y += cm.display.viewOffset;
+    if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
+    var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
+    if (lineN > last)
+      return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
+    if (x < 0) x = 0;
+
+    var lineObj = getLine(doc, lineN);
+    for (;;) {
+      var found = coordsCharInner(cm, lineObj, lineN, x, y);
+      var merged = collapsedSpanAtEnd(lineObj);
+      var mergedPos = merged && merged.find(0, true);
+      if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
+        lineN = lineNo(lineObj = mergedPos.to.line);
+      else
+        return found;
+    }
+  }
+
+  function coordsCharInner(cm, lineObj, lineNo, x, y) {
+    var innerOff = y - heightAtLine(lineObj);
+    var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
+    var preparedMeasure = prepareMeasureForLine(cm, lineObj);
+
+    function getX(ch) {
+      var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
+      wrongLine = true;
+      if (innerOff > sp.bottom) return sp.left - adjust;
+      else if (innerOff < sp.top) return sp.left + adjust;
+      else wrongLine = false;
+      return sp.left;
+    }
+
+    var bidi = getOrder(lineObj), dist = lineObj.text.length;
+    var from = lineLeft(lineObj), to = lineRight(lineObj);
+    var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
+
+    if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
+    // Do a binary search between these bounds.
+    for (;;) {
+      if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
+        var ch = x < fromX || x - fromX <= toX - x ? from : to;
+        var xDiff = x - (ch == from ? fromX : toX);
+        while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
+        var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
+                              xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
+        return pos;
+      }
+      var step = Math.ceil(dist / 2), middle = from + step;
+      if (bidi) {
+        middle = from;
+        for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
+      }
+      var middleX = getX(middle);
+      if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
+      else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
+    }
+  }
+
+  var measureText;
+  // Compute the default text height.
+  function textHeight(display) {
+    if (display.cachedTextHeight != null) return display.cachedTextHeight;
+    if (measureText == null) {
+      measureText = elt("pre");
+      // Measure a bunch of lines, for browsers that compute
+      // fractional heights.
+      for (var i = 0; i < 49; ++i) {
+        measureText.appendChild(document.createTextNode("x"));
+        measureText.appendChild(elt("br"));
+      }
+      measureText.appendChild(document.createTextNode("x"));
+    }
+    removeChildrenAndAdd(display.measure, measureText);
+    var height = measureText.offsetHeight / 50;
+    if (height > 3) display.cachedTextHeight = height;
+    removeChildren(display.measure);
+    return height || 1;
+  }
+
+  // Compute the default character width.
+  function charWidth(display) {
+    if (display.cachedCharWidth != null) return display.cachedCharWidth;
+    var anchor = elt("span", "xxxxxxxxxx");
+    var pre = elt("pre", [anchor]);
+    removeChildrenAndAdd(display.measure, pre);
+    var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
+    if (width > 2) display.cachedCharWidth = width;
+    return width || 10;
+  }
+
+  // OPERATIONS
+
+  // Operations are used to wrap a series of changes to the editor
+  // state in such a way that each change won't have to update the
+  // cursor and display (which would be awkward, slow, and
+  // error-prone). Instead, display updates are batched and then all
+  // combined and executed at once.
+
+  var nextOpId = 0;
+  // Start a new operation.
+  function startOperation(cm) {
+    cm.curOp = {
+      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
+      startHeight: cm.doc.height, // Used to detect need to update scrollbar
+      forceUpdate: false,      // Used to force a redraw
+      updateInput: null,       // Whether to reset the input textarea
+      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
+      changeObjs: null,        // Accumulated changes, for firing change events
+      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
+      selectionChanged: false, // Whether the selection needs to be redrawn
+      updateMaxLine: false,    // Set when the widest line needs to be determined anew
+      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
+      scrollToPos: null,       // Used to scroll to a specific position
+      id: ++nextOpId           // Unique ID
+    };
+    if (!delayedCallbackDepth++) delayedCallbacks = [];
+  }
+
+  // Finish an operation, updating the display and signalling delayed events
+  function endOperation(cm) {
+    var op = cm.curOp, doc = cm.doc, display = cm.display;
+    cm.curOp = null;
+
+    if (op.updateMaxLine) findMaxLine(cm);
+
+    // If it looks like an update might be needed, call updateDisplay
+    if (op.viewChanged || op.forceUpdate || op.scrollTop != null ||
+        op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
+                           op.scrollToPos.to.line >= display.viewTo) ||
+        display.maxLineChanged && cm.options.lineWrapping) {
+      var updated = updateDisplay(cm, {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
+      if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
+    }
+    // If no update was run, but the selection changed, redraw that.
+    if (!updated && op.selectionChanged) updateSelection(cm);
+    if (!updated && op.startHeight != cm.doc.height) updateScrollbars(cm);
+
+    // Propagate the scroll position to the actual DOM scroller
+    if (op.scrollTop != null && display.scroller.scrollTop != op.scrollTop) {
+      var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
+      display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top;
+    }
+    if (op.scrollLeft != null && display.scroller.scrollLeft != op.scrollLeft) {
+      var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft));
+      display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left;
+      alignHorizontally(cm);
+    }
+    // If we need to scroll a specific position into view, do so.
+    if (op.scrollToPos) {
+      var coords = scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from),
+                                     clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin);
+      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
+    }
+
+    if (op.selectionChanged) restartBlink(cm);
+
+    if (cm.state.focused && op.updateInput)
+      resetInput(cm, op.typing);
+
+    // Fire events for markers that are hidden/unidden by editing or
+    // undoing
+    var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
+    if (hidden) for (var i = 0; i < hidden.length; ++i)
+      if (!hidden[i].lines.length) signal(hidden[i], "hide");
+    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
+      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");
+
+    var delayed;
+    if (!--delayedCallbackDepth) {
+      delayed = delayedCallbacks;
+      delayedCallbacks = null;
+    }
+    // Fire change events, and delayed event handlers
+    if (op.changeObjs)
+      signal(cm, "changes", cm, op.changeObjs);
+    if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
+    if (op.cursorActivityHandlers)
+      for (var i = 0; i < op.cursorActivityHandlers.length; i++)
+        op.cursorActivityHandlers[i](cm);
+  }
+
+  // Run the given function in an operation
+  function runInOp(cm, f) {
+    if (cm.curOp) return f();
+    startOperation(cm);
+    try { return f(); }
+    finally { endOperation(cm); }
+  }
+  // Wraps a function in an operation. Returns the wrapped function.
+  function operation(cm, f) {
+    return function() {
+      if (cm.curOp) return f.apply(cm, arguments);
+      startOperation(cm);
+      try { return f.apply(cm, arguments); }
+      finally { endOperation(cm); }
+    };
+  }
+  // Used to add methods to editor and doc instances, wrapping them in
+  // operations.
+  function methodOp(f) {
+    return function() {
+      if (this.curOp) return f.apply(this, arguments);
+      startOperation(this);
+      try { return f.apply(this, arguments); }
+      finally { endOperation(this); }
+    };
+  }
+  function docMethodOp(f) {
+    return function() {
+      var cm = this.cm;
+      if (!cm || cm.curOp) return f.apply(this, arguments);
+      startOperation(cm);
+      try { return f.apply(this, arguments); }
+      finally { endOperation(cm); }
+    };
+  }
+
+  // VIEW TRACKING
+
+  // These objects are used to represent the visible (currently drawn)
+  // part of the document. A LineView may correspond to multiple
+  // logical lines, if those are connected by collapsed ranges.
+  function LineView(doc, line, lineN) {
+    // The starting line
+    this.line = line;
+    // Continuing lines, if any
+    this.rest = visualLineContinued(line);
+    // Number of logical lines in this visual line
+    this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
+    this.node = this.text = null;
+    this.hidden = lineIsHidden(doc, line);
+  }
+
+  // Create a range of LineView objects for the given lines.
+  function buildViewArray(cm, from, to) {
+    var array = [], nextPos;
+    for (var pos = from; pos < to; pos = nextPos) {
+      var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
+      nextPos = pos + view.size;
+      array.push(view);
+    }
+    return array;
+  }
+
+  // Updates the display.view data structure for a given change to the
+  // document. From and to are in pre-change coordinates. Lendiff is
+  // the amount of lines added or subtracted by the change. This is
+  // used for changes that span multiple lines, or change the way
+  // lines are divided into visual lines. regLineChange (below)
+  // registers single-line changes.
+  function regChange(cm, from, to, lendiff) {
+    if (from == null) from = cm.doc.first;
+    if (to == null) to = cm.doc.first + cm.doc.size;
+    if (!lendiff) lendiff = 0;
+
+    var display = cm.display;
+    if (lendiff && to < display.viewTo &&
+        (display.updateLineNumbers == null || display.updateLineNumbers > from))
+      display.updateLineNumbers = from;
+
+    cm.curOp.viewChanged = true;
+
+    if (from >= display.viewTo) { // Change after
+      if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
+        resetView(cm);
+    } else if (to <= display.viewFrom) { // Change before
+      if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
+        resetView(cm);
+      } else {
+        display.viewFrom += lendiff;
+        display.viewTo += lendiff;
+      }
+    } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
+      resetView(cm);
+    } else if (from <= display.viewFrom) { // Top overlap
+      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
+      if (cut) {
+        display.view = display.view.slice(cut.index);
+        display.viewFrom = cut.lineN;
+        display.viewTo += lendiff;
+      } else {
+        resetView(cm);
+      }
+    } else if (to >= display.viewTo) { // Bottom overlap
+      var cut = viewCuttingPoint(cm, from, from, -1);
+      if (cut) {
+        display.view = display.view.slice(0, cut.index);
+        display.viewTo = cut.lineN;
+      } else {
+        resetView(cm);
+      }
+    } else { // Gap in the middle
+      var cutTop = viewCuttingPoint(cm, from, from, -1);
+      var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
+      if (cutTop && cutBot) {
+        display.view = display.view.slice(0, cutTop.index)
+          .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
+          .concat(display.view.slice(cutBot.index));
+        display.viewTo += lendiff;
+      } else {
+        resetView(cm);
+      }
+    }
+
+    var ext = display.externalMeasured;
+    if (ext) {
+      if (to < ext.lineN)
+        ext.lineN += lendiff;
+      else if (from < ext.lineN + ext.size)
+        display.externalMeasured = null;
+    }
+  }
+
+  // Register a change to a single line. Type must be one of "text",
+  // "gutter", "class", "widget"
+  function regLineChange(cm, line, type) {
+    cm.curOp.viewChanged = true;
+    var display = cm.display, ext = cm.display.externalMeasured;
+    if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
+      display.externalMeasured = null;
+
+    if (line < display.viewFrom || line >= display.viewTo) return;
+    var lineView = display.view[findViewIndex(cm, line)];
+    if (lineView.node == null) return;
+    var arr = lineView.changes || (lineView.changes = []);
+    if (indexOf(arr, type) == -1) arr.push(type);
+  }
+
+  // Clear the view.
+  function resetView(cm) {
+    cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
+    cm.display.view = [];
+    cm.display.viewOffset = 0;
+  }
+
+  // Find the view element corresponding to a given line. Return null
+  // when the line isn't visible.
+  function findViewIndex(cm, n) {
+    if (n >= cm.display.viewTo) return null;
+    n -= cm.display.viewFrom;
+    if (n < 0) return null;
+    var view = cm.display.view;
+    for (var i = 0; i < view.length; i++) {
+      n -= view[i].size;
+      if (n < 0) return i;
+    }
+  }
+
+  function viewCuttingPoint(cm, oldN, newN, dir) {
+    var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
+    if (!sawCollapsedSpans) return {index: index, lineN: newN};
+    for (var i = 0, n = cm.display.viewFrom; i < index; i++)
+      n += view[i].size;
+    if (n != oldN) {
+      if (dir > 0) {
+        if (index == view.length - 1) return null;
+        diff = (n + view[index].size) - oldN;
+        index++;
+      } else {
+        diff = n - oldN;
+      }
+      oldN += diff; newN += diff;
+    }
+    while (visualLineNo(cm.doc, newN) != newN) {
+      if (index == (dir < 0 ? 0 : view.length - 1)) return null;
+      newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
+      index += dir;
+    }
+    return {index: index, lineN: newN};
+  }
+
+  // Force the view to cover a given range, adding empty view element
+  // or clipping off existing ones as needed.
+  function adjustView(cm, from, to) {
+    var display = cm.display, view = display.view;
+    if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
+      display.view = buildViewArray(cm, from, to);
+      display.viewFrom = from;
+    } else {
+      if (display.viewFrom > from)
+        display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
+      else if (display.viewFrom < from)
+        display.view = display.view.slice(findViewIndex(cm, from));
+      display.viewFrom = from;
+      if (display.viewTo < to)
+        display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
+      else if (display.viewTo > to)
+        display.view = display.view.slice(0, findViewIndex(cm, to));
+    }
+    display.viewTo = to;
+  }
+
+  // Count the number of lines in the view whose DOM representation is
+  // out of date (or nonexistent).
+  function countDirtyView(cm) {
+    var view = cm.display.view, dirty = 0;
+    for (var i = 0; i < view.length; i++) {
+      var lineView = view[i];
+      if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;
+    }
+    return dirty;
+  }
+
+  // INPUT HANDLING
+
+  // Poll for input changes, using the normal rate of polling. This
+  // runs as long as the editor is focused.
+  function slowPoll(cm) {
+    if (cm.display.pollingFast) return;
+    cm.display.poll.set(cm.options.pollInterval, function() {
+      readInput(cm);
+      if (cm.state.focused) slowPoll(cm);
+    });
+  }
+
+  // When an event has just come in that is likely to add or change
+  // something in the input textarea, we poll faster, to ensure that
+  // the change appears on the screen quickly.
+  function fastPoll(cm) {
+    var missed = false;
+    cm.display.pollingFast = true;
+    function p() {
+      var changed = readInput(cm);
+      if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
+      else {cm.display.pollingFast = false; slowPoll(cm);}
+    }
+    cm.display.poll.set(20, p);
+  }
+
+  // Read input from the textarea, and update the document to match.
+  // When something is selected, it is present in the textarea, and
+  // selected (unless it is huge, in which case a placeholder is
+  // used). When nothing is selected, the cursor sits after previously
+  // seen text (can be empty), which is stored in prevInput (we must
+  // not reset the textarea when typing, because that breaks IME).
+  function readInput(cm) {
+    var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc;
+    // Since this is called a *lot*, try to bail out as cheaply as
+    // possible when it is clear that nothing happened. hasSelection
+    // will be the case when there is a lot of text in the textarea,
+    // in which case reading its value would be expensive.
+    if (!cm.state.focused || (hasSelection(input) && !prevInput) || isReadOnly(cm) || cm.options.disableInput)
+      return false;
+    // See paste handler for more on the fakedLastChar kludge
+    if (cm.state.pasteIncoming && cm.state.fakedLastChar) {
+      input.value = input.value.substring(0, input.value.length - 1);
+      cm.state.fakedLastChar = false;
+    }
+    var text = input.value;
+    // If nothing changed, bail.
+    if (text == prevInput && !cm.somethingSelected()) return false;
+    // Work around nonsensical selection resetting in IE9/10
+    if (ie && !ie_upto8 && cm.display.inputHasSelection === text) {
+      resetInput(cm);
+      return false;
+    }
+
+    var withOp = !cm.curOp;
+    if (withOp) startOperation(cm);
+    cm.display.shift = false;
+
+    // Find the part of the input that is actually new
+    var same = 0, l = Math.min(prevInput.length, text.length);
+    while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
+    var inserted = text.slice(same), textLines = splitLines(inserted);
+
+    // When pasing N lines into N selections, insert one line per selection
+    var multiPaste = cm.state.pasteIncoming && textLines.length > 1 && doc.sel.ranges.length == textLines.length;
+
+    // Normal behavior is to insert the new text into every selection
+    for (var i = doc.sel.ranges.length - 1; i >= 0; i--) {
+      var range = doc.sel.ranges[i];
+      var from = range.from(), to = range.to();
+      // Handle deletion
+      if (same < prevInput.length)
+        from = Pos(from.line, from.ch - (prevInput.length - same));
+      // Handle overwrite
+      else if (cm.state.overwrite && range.empty() && !cm.state.pasteIncoming)
+        to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
+      var updateInput = cm.curOp.updateInput;
+      var changeEvent = {from: from, to: to, text: multiPaste ? [textLines[i]] : textLines,
+                         origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
+      makeChange(cm.doc, changeEvent);
+      signalLater(cm, "inputRead", cm, changeEvent);
+      // When an 'electric' character is inserted, immediately trigger a reindent
+      if (inserted && !cm.state.pasteIncoming && cm.options.electricChars &&
+          cm.options.smartIndent && range.head.ch < 100 &&
+          (!i || doc.sel.ranges[i - 1].head.line != range.head.line)) {
+        var mode = cm.getModeAt(range.head);
+        if (mode.electricChars) {
+          for (var j = 0; j < mode.electricChars.length; j++)
+            if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
+              indentLine(cm, range.head.line, "smart");
+              break;
+            }
+        } else if (mode.electricInput) {
+          var end = changeEnd(changeEvent);
+          if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch)))
+            indentLine(cm, range.head.line, "smart");
+        }
+      }
+    }
+    ensureCursorVisible(cm);
+    cm.curOp.updateInput = updateInput;
+    cm.curOp.typing = true;
+
+    // Don't leave long text in the textarea, since it makes further polling slow
+    if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = "";
+    else cm.display.prevInput = text;
+    if (withOp) endOperation(cm);
+    cm.state.pasteIncoming = cm.state.cutIncoming = false;
+    return true;
+  }
+
+  // Reset the input to correspond to the selection (or to be empty,
+  // when not typing and nothing is selected)
+  function resetInput(cm, typing) {
+    var minimal, selected, doc = cm.doc;
+    if (cm.somethingSelected()) {
+      cm.display.prevInput = "";
+      var range = doc.sel.primary();
+      minimal = hasCopyEvent &&
+        (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000);
+      var content = minimal ? "-" : selected || cm.getSelection();
+      cm.display.input.value = content;
+      if (cm.state.focused) selectInput(cm.display.input);
+      if (ie && !ie_upto8) cm.display.inputHasSelection = content;
+    } else if (!typing) {
+      cm.display.prevInput = cm.display.input.value = "";
+      if (ie && !ie_upto8) cm.display.inputHasSelection = null;
+    }
+    cm.display.inaccurateSelection = minimal;
+  }
+
+  function focusInput(cm) {
+    if (cm.options.readOnly != "nocursor" && (!mobile || activeElt() != cm.display.input))
+      cm.display.input.focus();
+  }
+
+  function ensureFocus(cm) {
+    if (!cm.state.focused) { focusInput(cm); onFocus(cm); }
+  }
+
+  function isReadOnly(cm) {
+    return cm.options.readOnly || cm.doc.cantEdit;
+  }
+
+  // EVENT HANDLERS
+
+  // Attach the necessary event handlers when initializing the editor
+  function registerEventHandlers(cm) {
+    var d = cm.display;
+    on(d.scroller, "mousedown", operation(cm, onMouseDown));
+    // Older IE's will not fire a second mousedown for a double click
+    if (ie_upto10)
+      on(d.scroller, "dblclick", operation(cm, function(e) {
+        if (signalDOMEvent(cm, e)) return;
+        var pos = posFromMouse(cm, e);
+        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
+        e_preventDefault(e);
+        var word = findWordAt(cm.doc, pos);
+        extendSelection(cm.doc, word.anchor, word.head);
+      }));
+    else
+      on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
+    // Prevent normal selection in the editor (we handle our own)
+    on(d.lineSpace, "selectstart", function(e) {
+      if (!eventInWidget(d, e)) e_preventDefault(e);
+    });
+    // Some browsers fire contextmenu *after* opening the menu, at
+    // which point we can't mess with it anymore. Context menu is
+    // handled in onMouseDown for these browsers.
+    if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
+
+    // Sync scrolling between fake scrollbars and real scrollable
+    // area, ensure viewport is updated when scrolling.
+    on(d.scroller, "scroll", function() {
+      if (d.scroller.clientHeight) {
+        setScrollTop(cm, d.scroller.scrollTop);
+        setScrollLeft(cm, d.scroller.scrollLeft, true);
+        signal(cm, "scroll", cm);
+      }
+    });
+    on(d.scrollbarV, "scroll", function() {
+      if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop);
+    });
+    on(d.scrollbarH, "scroll", function() {
+      if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
+    });
+
+    // Listen to wheel events in order to try and update the viewport on time.
+    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
+    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
+
+    // Prevent clicks in the scrollbars from killing focus
+    function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
+    on(d.scrollbarH, "mousedown", reFocus);
+    on(d.scrollbarV, "mousedown", reFocus);
+    // Prevent wrapper from ever scrolling
+    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
+
+    // When the window resizes, we need to refresh active editors.
+    var resizeTimer;
+    function onResize() {
+      if (resizeTimer == null) resizeTimer = setTimeout(function() {
+        resizeTimer = null;
+        // Might be a text scaling operation, clear size caches.
+        d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = knownScrollbarWidth = null;
+        cm.setSize();
+      }, 100);
+    }
+    on(window, "resize", onResize);
+    // The above handler holds on to the editor and its data
+    // structures. Here we poll to unregister it when the editor is no
+    // longer in the document, so that it can be garbage-collected.
+    function unregister() {
+      if (contains(document.body, d.wrapper)) setTimeout(unregister, 5000);
+      else off(window, "resize", onResize);
+    }
+    setTimeout(unregister, 5000);
+
+    on(d.input, "keyup", operation(cm, onKeyUp));
+    on(d.input, "input", function() {
+      if (ie && !ie_upto8 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
+      fastPoll(cm);
+    });
+    on(d.input, "keydown", operation(cm, onKeyDown));
+    on(d.input, "keypress", operation(cm, onKeyPress));
+    on(d.input, "focus", bind(onFocus, cm));
+    on(d.input, "blur", bind(onBlur, cm));
+
+    function drag_(e) {
+      if (!signalDOMEvent(cm, e)) e_stop(e);
+    }
+    if (cm.options.dragDrop) {
+      on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
+      on(d.scroller, "dragenter", drag_);
+      on(d.scroller, "dragover", drag_);
+      on(d.scroller, "drop", operation(cm, onDrop));
+    }
+    on(d.scroller, "paste", function(e) {
+      if (eventInWidget(d, e)) return;
+      cm.state.pasteIncoming = true;
+      focusInput(cm);
+      fastPoll(cm);
+    });
+    on(d.input, "paste", function() {
+      // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206
+      // Add a char to the end of textarea before paste occur so that
+      // selection doesn't span to the end of textarea.
+      if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) {
+        var start = d.input.selectionStart, end = d.input.selectionEnd;
+        d.input.value += "$";
+        d.input.selectionStart = start;
+        d.input.selectionEnd = end;
+        cm.state.fakedLastChar = true;
+      }
+      cm.state.pasteIncoming = true;
+      fastPoll(cm);
+    });
+
+    function prepareCopyCut(e) {
+      if (cm.somethingSelected()) {
+        if (d.inaccurateSelection) {
+          d.prevInput = "";
+          d.inaccurateSelection = false;
+          d.input.value = cm.getSelection();
+          selectInput(d.input);
+        }
+      } else {
+        var text = "", ranges = [];
+        for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
+          var line = cm.doc.sel.ranges[i].head.line;
+          var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
+          ranges.push(lineRange);
+          text += cm.getRange(lineRange.anchor, lineRange.head);
+        }
+        if (e.type == "cut") {
+          cm.setSelections(ranges, null, sel_dontScroll);
+        } else {
+          d.prevInput = "";
+          d.input.value = text;
+          selectInput(d.input);
+        }
+      }
+      if (e.type == "cut") cm.state.cutIncoming = true;
+    }
+    on(d.input, "cut", prepareCopyCut);
+    on(d.input, "copy", prepareCopyCut);
+
+    // Needed to handle Tab key in KHTML
+    if (khtml) on(d.sizer, "mouseup", function() {
+      if (activeElt() == d.input) d.input.blur();
+      focusInput(cm);
+    });
+  }
+
+  // MOUSE EVENTS
+
+  // Return true when the given mouse event happened in a widget
+  function eventInWidget(display, e) {
+    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
+      if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true;
+    }
+  }
+
+  // Given a mouse event, find the corresponding position. If liberal
+  // is false, it checks whether a gutter or scrollbar was clicked,
+  // and returns null if it was. forRect is used by rectangular
+  // selections, and tries to estimate a character position even for
+  // coordinates beyond the right of the text.
+  function posFromMouse(cm, e, liberal, forRect) {
+    var display = cm.display;
+    if (!liberal) {
+      var target = e_target(e);
+      if (target == display.scrollbarH || target == display.scrollbarV ||
+          target == display.scrollbarFiller || target == display.gutterFiller) return null;
+    }
+    var x, y, space = display.lineSpace.getBoundingClientRect();
+    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
+    try { x = e.clientX - space.left; y = e.clientY - space.top; }
+    catch (e) { return null; }
+    var coords = coordsChar(cm, x, y), line;
+    if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
+      var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
+      coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff));
+    }
+    return coords;
+  }
+
+  // A mouse down can be a single click, double click, triple click,
+  // start of selection drag, start of text drag, new cursor
+  // (ctrl-click), rectangle drag (alt-drag), or xwin
+  // middle-click-paste. Or it might be a click on something we should
+  // not interfere with, such as a scrollbar or widget.
+  function onMouseDown(e) {
+    if (signalDOMEvent(this, e)) return;
+    var cm = this, display = cm.display;
+    display.shift = e.shiftKey;
+
+    if (eventInWidget(display, e)) {
+      if (!webkit) {
+        // Briefly turn off draggability, to allow widgets to do
+        // normal dragging things.
+        display.scroller.draggable = false;
+        setTimeout(function(){display.scroller.draggable = true;}, 100);
+      }
+      return;
+    }
+    if (clickInGutter(cm, e)) return;
+    var start = posFromMouse(cm, e);
+    window.focus();
+
+    switch (e_button(e)) {
+    case 1:
+      if (start)
+        leftButtonDown(cm, e, start);
+      else if (e_target(e) == display.scroller)
+        e_preventDefault(e);
+      break;
+    case 2:
+      if (webkit) cm.state.lastMiddleDown = +new Date;
+      if (start) extendSelection(cm.doc, start);
+      setTimeout(bind(focusInput, cm), 20);
+      e_preventDefault(e);
+      break;
+    case 3:
+      if (captureRightClick) onContextMenu(cm, e);
+      break;
+    }
+  }
+
+  var lastClick, lastDoubleClick;
+  function leftButtonDown(cm, e, start) {
+    setTimeout(bind(ensureFocus, cm), 0);
+
+    var now = +new Date, type;
+    if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
+      type = "triple";
+    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
+      type = "double";
+      lastDoubleClick = {time: now, pos: start};
+    } else {
+      type = "single";
+      lastClick = {time: now, pos: start};
+    }
+
+    var sel = cm.doc.sel, addNew = mac ? e.metaKey : e.ctrlKey;
+    if (cm.options.dragDrop && dragAndDrop && !addNew && !isReadOnly(cm) &&
+        type == "single" && sel.contains(start) > -1 && sel.somethingSelected())
+      leftButtonStartDrag(cm, e, start);
+    else
+      leftButtonSelect(cm, e, start, type, addNew);
+  }
+
+  // Start a text drag. When it ends, see if any dragging actually
+  // happen, and treat as a click if it didn't.
+  function leftButtonStartDrag(cm, e, start) {
+    var display = cm.display;
+    var dragEnd = operation(cm, function(e2) {
+      if (webkit) display.scroller.draggable = false;
+      cm.state.draggingText = false;
+      off(document, "mouseup", dragEnd);
+      off(display.scroller, "drop", dragEnd);
+      if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
+        e_preventDefault(e2);
+        extendSelection(cm.doc, start);
+        focusInput(cm);
+        // Work around unexplainable focus problem in IE9 (#2127)
+        if (ie_upto10 && !ie_upto8)
+          setTimeout(function() {document.body.focus(); focusInput(cm);}, 20);
+      }
+    });
+    // Let the drag handler handle this.
+    if (webkit) display.scroller.draggable = true;
+    cm.state.draggingText = dragEnd;
+    // IE's approach to draggable
+    if (display.scroller.dragDrop) display.scroller.dragDrop();
+    on(document, "mouseup", dragEnd);
+    on(display.scroller, "drop", dragEnd);
+  }
+
+  // Normal selection, as opposed to text dragging.
+  function leftButtonSelect(cm, e, start, type, addNew) {
+    var display = cm.display, doc = cm.doc;
+    e_preventDefault(e);
+
+    var ourRange, ourIndex, startSel = doc.sel;
+    if (addNew && !e.shiftKey) {
+      ourIndex = doc.sel.contains(start);
+      if (ourIndex > -1)
+        ourRange = doc.sel.ranges[ourIndex];
+      else
+        ourRange = new Range(start, start);
+    } else {
+      ourRange = doc.sel.primary();
+    }
+
+    if (e.altKey) {
+      type = "rect";
+      if (!addNew) ourRange = new Range(start, start);
+      start = posFromMouse(cm, e, true, true);
+      ourIndex = -1;
+    } else if (type == "double") {
+      var word = findWordAt(doc, start);
+      if (cm.display.shift || doc.extend)
+        ourRange = extendRange(doc, ourRange, word.anchor, word.head);
+      else
+        ourRange = word;
+    } else if (type == "triple") {
+      var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
+      if (cm.display.shift || doc.extend)
+        ourRange = extendRange(doc, ourRange, line.anchor, line.head);
+      else
+        ourRange = line;
+    } else {
+      ourRange = extendRange(doc, ourRange, start);
+    }
+
+    if (!addNew) {
+      ourIndex = 0;
+      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
+      startSel = doc.sel;
+    } else if (ourIndex > -1) {
+      replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
+    } else {
+      ourIndex = doc.sel.ranges.length;
+      setSelection(doc, normalizeSelection(doc.sel.ranges.concat([ourRange]), ourIndex),
+                   {scroll: false, origin: "*mouse"});
+    }
+
+    var lastPos = start;
+    function extendTo(pos) {
+      if (cmp(lastPos, pos) == 0) return;
+      lastPos = pos;
+
+      if (type == "rect") {
+        var ranges = [], tabSize = cm.options.tabSize;
+        var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
+        var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
+        var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
+        for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
+             line <= end; line++) {
+          var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
+          if (left == right)
+            ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
+          else if (text.length > leftPos)
+            ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
+        }
+        if (!ranges.length) ranges.push(new Range(start, start));
+        setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), sel_mouse);
+      } else {
+        var oldRange = ourRange;
+        var anchor = oldRange.anchor, head = pos;
+        if (type != "single") {
+          if (type == "double")
+            var range = findWordAt(doc, pos);
+          else
+            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
+          if (cmp(range.anchor, anchor) > 0) {
+            head = range.head;
+            anchor = minPos(oldRange.from(), range.anchor);
+          } else {
+            head = range.anchor;
+            anchor = maxPos(oldRange.to(), range.head);
+          }
+        }
+        var ranges = startSel.ranges.slice(0);
+        ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
+        setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
+      }
+    }
+
+    var editorSize = display.wrapper.getBoundingClientRect();
+    // Used to ensure timeout re-tries don't fire when another extend
+    // happened in the meantime (clearTimeout isn't reliable -- at
+    // least on Chrome, the timeouts still happen even when cleared,
+    // if the clear happens after their scheduled firing time).
+    var counter = 0;
+
+    function extend(e) {
+      var curCount = ++counter;
+      var cur = posFromMouse(cm, e, true, type == "rect");
+      if (!cur) return;
+      if (cmp(cur, lastPos) != 0) {
+        ensureFocus(cm);
+        extendTo(cur);
+        var visible = visibleLines(display, doc);
+        if (cur.line >= visible.to || cur.line < visible.from)
+          setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
+      } else {
+        var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
+        if (outside) setTimeout(operation(cm, function() {
+          if (counter != curCount) return;
+          display.scroller.scrollTop += outside;
+          extend(e);
+        }), 50);
+      }
+    }
+
+    function done(e) {
+      counter = Infinity;
+      e_preventDefault(e);
+      focusInput(cm);
+      off(document, "mousemove", move);
+      off(document, "mouseup", up);
+      doc.history.lastSelOrigin = null;
+    }
+
+    var move = operation(cm, function(e) {
+      if ((ie && !ie_upto9) ?  !e.buttons : !e_button(e)) done(e);
+      else extend(e);
+    });
+    var up = operation(cm, done);
+    on(document, "mousemove", move);
+    on(document, "mouseup", up);
+  }
+
+  // Determines whether an event happened in the gutter, and fires the
+  // handlers for the corresponding event.
+  function gutterEvent(cm, e, type, prevent, signalfn) {
+    try { var mX = e.clientX, mY = e.clientY; }
+    catch(e) { return false; }
+    if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
+    if (prevent) e_preventDefault(e);
+
+    var display = cm.display;
+    var lineBox = display.lineDiv.getBoundingClientRect();
+
+    if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
+    mY -= lineBox.top - display.viewOffset;
+
+    for (var i = 0; i < cm.options.gutters.length; ++i) {
+      var g = display.gutters.childNodes[i];
+      if (g && g.getBoundingClientRect().right >= mX) {
+        var line = lineAtHeight(cm.doc, mY);
+        var gutter = cm.options.gutters[i];
+        signalfn(cm, type, cm, line, gutter, e);
+        return e_defaultPrevented(e);
+      }
+    }
+  }
+
+  function clickInGutter(cm, e) {
+    return gutterEvent(cm, e, "gutterClick", true, signalLater);
+  }
+
+  // Kludge to work around strange IE behavior where it'll sometimes
+  // re-fire a series of drag-related events right after the drop (#1551)
+  var lastDrop = 0;
+
+  function onDrop(e) {
+    var cm = this;
+    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
+      return;
+    e_preventDefault(e);
+    if (ie) lastDrop = +new Date;
+    var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
+    if (!pos || isReadOnly(cm)) return;
+    // Might be a file drop, in which case we simply extract the text
+    // and insert it.
+    if (files && files.length && window.FileReader && window.File) {
+      var n = files.length, text = Array(n), read = 0;
+      var loadFile = function(file, i) {
+        var reader = new FileReader;
+        reader.onload = operation(cm, function() {
+          text[i] = reader.result;
+          if (++read == n) {
+            pos = clipPos(cm.doc, pos);
+            var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"};
+            makeChange(cm.doc, change);
+            setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
+          }
+        });
+        reader.readAsText(file);
+      };
+      for (var i = 0; i < n; ++i) loadFile(files[i], i);
+    } else { // Normal drop
+      // Don't do a replace if the drop happened inside of the selected text.
+      if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
+        cm.state.draggingText(e);
+        // Ensure the editor is re-focused
+        setTimeout(bind(focusInput, cm), 20);
+        return;
+      }
+      try {
+        var text = e.dataTransfer.getData("Text");
+        if (text) {
+          var selected = cm.state.draggingText && cm.listSelections();
+          setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
+          if (selected) for (var i = 0; i < selected.length; ++i)
+            replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
+          cm.replaceSelection(text, "around", "paste");
+          focusInput(cm);
+        }
+      }
+      catch(e){}
+    }
+  }
+
+  function onDragStart(cm, e) {
+    if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
+    if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
+
+    e.dataTransfer.setData("Text", cm.getSelection());
+
+    // Use dummy image instead of default browsers image.
+    // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
+    if (e.dataTransfer.setDragImage && !safari) {
+      var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
+      img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
+      if (presto) {
+        img.width = img.height = 1;
+        cm.display.wrapper.appendChild(img);
+        // Force a relayout, or Opera won't use our image for some obscure reason
+        img._top = img.offsetTop;
+      }
+      e.dataTransfer.setDragImage(img, 0, 0);
+      if (presto) img.parentNode.removeChild(img);
+    }
+  }
+
+  // SCROLL EVENTS
+
+  // Sync the scrollable area and scrollbars, ensure the viewport
+  // covers the visible area.
+  function setScrollTop(cm, val) {
+    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
+    cm.doc.scrollTop = val;
+    if (!gecko) updateDisplay(cm, {top: val});
+    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
+    if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
+    if (gecko) updateDisplay(cm);
+    startWorker(cm, 100);
+  }
+  // Sync scroller and scrollbar, ensure the gutter elements are
+  // aligned.
+  function setScrollLeft(cm, val, isScroller) {
+    if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
+    val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
+    cm.doc.scrollLeft = val;
+    alignHorizontally(cm);
+    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
+    if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
+  }
+
+  // Since the delta values reported on mouse wheel events are
+  // unstandardized between browsers and even browser versions, and
+  // generally horribly unpredictable, this code starts by measuring
+  // the scroll effect that the first few mouse wheel events have,
+  // and, from that, detects the way it can convert deltas to pixel
+  // offsets afterwards.
+  //
+  // The reason we want to know the amount a wheel event will scroll
+  // is that it gives us a chance to update the display before the
+  // actual scrolling happens, reducing flickering.
+
+  var wheelSamples = 0, wheelPixelsPerUnit = null;
+  // Fill in a browser-detected starting value on browsers where we
+  // know one. These don't have to be accurate -- the result of them
+  // being wrong would just be a slight flicker on the first wheel
+  // scroll (if it is large enough).
+  if (ie) wheelPixelsPerUnit = -.53;
+  else if (gecko) wheelPixelsPerUnit = 15;
+  else if (chrome) wheelPixelsPerUnit = -.7;
+  else if (safari) wheelPixelsPerUnit = -1/3;
+
+  function onScrollWheel(cm, e) {
+    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
+    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
+    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
+    else if (dy == null) dy = e.wheelDelta;
+
+    var display = cm.display, scroll = display.scroller;
+    // Quit if there's nothing to scroll here
+    if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
+          dy && scroll.scrollHeight > scroll.clientHeight)) return;
+
+    // Webkit browsers on OS X abort momentum scrolls when the target
+    // of the scroll event is removed from the scrollable element.
+    // This hack (see related code in patchDisplay) makes sure the
+    // element is kept around.
+    if (dy && mac && webkit) {
+      outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
+        for (var i = 0; i < view.length; i++) {
+          if (view[i].node == cur) {
+            cm.display.currentWheelTarget = cur;
+            break outer;
+          }
+        }
+      }
+    }
+
+    // On some browsers, horizontal scrolling will cause redraws to
+    // happen before the gutter has been realigned, causing it to
+    // wriggle around in a most unseemly way. When we have an
+    // estimated pixels/delta value, we just handle horizontal
+    // scrolling entirely here. It'll be slightly off from native, but
+    // better than glitching out.
+    if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
+      if (dy)
+        setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
+      setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
+      e_preventDefault(e);
+      display.wheelStartX = null; // Abort measurement, if in progress
+      return;
+    }
+
+    // 'Project' the visible viewport to cover the area that is being
+    // scrolled into view (if we know enough to estimate it).
+    if (dy && wheelPixelsPerUnit != null) {
+      var pixels = dy * wheelPixelsPerUnit;
+      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
+      if (pixels < 0) top = Math.max(0, top + pixels - 50);
+      else bot = Math.min(cm.doc.height, bot + pixels + 50);
+      updateDisplay(cm, {top: top, bottom: bot});
+    }
+
+    if (wheelSamples < 20) {
+      if (display.wheelStartX == null) {
+        display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
+        display.wheelDX = dx; display.wheelDY = dy;
+        setTimeout(function() {
+          if (display.wheelStartX == null) return;
+          var movedX = scroll.scrollLeft - display.wheelStartX;
+          var movedY = scroll.scrollTop - display.wheelStartY;
+          var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
+            (movedX && display.wheelDX && movedX / display.wheelDX);
+          display.wheelStartX = display.wheelStartY = null;
+          if (!sample) return;
+          wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
+          ++wheelSamples;
+        }, 200);
+      } else {
+        display.wheelDX += dx; display.wheelDY += dy;
+      }
+    }
+  }
+
+  // KEY EVENTS
+
+  // Run a handler that was bound to a key.
+  function doHandleBinding(cm, bound, dropShift) {
+    if (typeof bound == "string") {
+      bound = commands[bound];
+      if (!bound) return false;
+    }
+    // Ensure previous input has been read, so that the handler sees a
+    // consistent view of the document
+    if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
+    var prevShift = cm.display.shift, done = false;
+    try {
+      if (isReadOnly(cm)) cm.state.suppressEdits = true;
+      if (dropShift) cm.display.shift = false;
+      done = bound(cm) != Pass;
+    } finally {
+      cm.display.shift = prevShift;
+      cm.state.suppressEdits = false;
+    }
+    return done;
+  }
+
+  // Collect the currently active keymaps.
+  function allKeyMaps(cm) {
+    var maps = cm.state.keyMaps.slice(0);
+    if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
+    maps.push(cm.options.keyMap);
+    return maps;
+  }
+
+  var maybeTransition;
+  // Handle a key from the keydown event.
+  function handleKeyBinding(cm, e) {
+    // Handle automatic keymap transitions
+    var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
+    clearTimeout(maybeTransition);
+    if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
+      if (getKeyMap(cm.options.keyMap) == startMap) {
+        cm.options.keyMap = (next.call ? next.call(null, cm) : next);
+        keyMapChanged(cm);
+      }
+    }, 50);
+
+    var name = keyName(e, true), handled = false;
+    if (!name) return false;
+    var keymaps = allKeyMaps(cm);
+
+    if (e.shiftKey) {
+      // First try to resolve full name (including 'Shift-'). Failing
+      // that, see if there is a cursor-motion command (starting with
+      // 'go') bound to the keyname without 'Shift-'.
+      handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);})
+             || lookupKey(name, keymaps, function(b) {
+                  if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
+                    return doHandleBinding(cm, b);
+                });
+    } else {
+      handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); });
+    }
+
+    if (handled) {
+      e_preventDefault(e);
+      restartBlink(cm);
+      signalLater(cm, "keyHandled", cm, name, e);
+    }
+    return handled;
+  }
+
+  // Handle a key from the keypress event
+  function handleCharBinding(cm, e, ch) {
+    var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
+                            function(b) { return doHandleBinding(cm, b, true); });
+    if (handled) {
+      e_preventDefault(e);
+      restartBlink(cm);
+      signalLater(cm, "keyHandled", cm, "'" + ch + "'", e);
+    }
+    return handled;
+  }
+
+  var lastStoppedKey = null;
+  function onKeyDown(e) {
+    var cm = this;
+    ensureFocus(cm);
+    if (signalDOMEvent(cm, e)) return;
+    // IE does strange things with escape.
+    if (ie_upto10 && e.keyCode == 27) e.returnValue = false;
+    var code = e.keyCode;
+    cm.display.shift = code == 16 || e.shiftKey;
+    var handled = handleKeyBinding(cm, e);
+    if (presto) {
+      lastStoppedKey = handled ? code : null;
+      // Opera has no cut event... we try to at least catch the key combo
+      if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
+        cm.replaceSelection("", null, "cut");
+    }
+
+    // Turn mouse into crosshair when Alt is held on Mac.
+    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
+      showCrossHair(cm);
+  }
+
+  function showCrossHair(cm) {
+    var lineDiv = cm.display.lineDiv;
+    addClass(lineDiv, "CodeMirror-crosshair");
+
+    function up(e) {
+      if (e.keyCode == 18 || !e.altKey) {
+        rmClass(lineDiv, "CodeMirror-crosshair");
+        off(document, "keyup", up);
+        off(document, "mouseover", up);
+      }
+    }
+    on(document, "keyup", up);
+    on(document, "mouseover", up);
+  }
+
+  function onKeyUp(e) {
+    if (signalDOMEvent(this, e)) return;
+    if (e.keyCode == 16) this.doc.sel.shift = false;
+  }
+
+  function onKeyPress(e) {
+    var cm = this;
+    if (signalDOMEvent(cm, e)) return;
+    var keyCode = e.keyCode, charCode = e.charCode;
+    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
+    if (((presto && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
+    var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
+    if (handleCharBinding(cm, e, ch)) return;
+    if (ie && !ie_upto8) cm.display.inputHasSelection = null;
+    fastPoll(cm);
+  }
+
+  // FOCUS/BLUR EVENTS
+
+  function onFocus(cm) {
+    if (cm.options.readOnly == "nocursor") return;
+    if (!cm.state.focused) {
+      signal(cm, "focus", cm);
+      cm.state.focused = true;
+      addClass(cm.display.wrapper, "CodeMirror-focused");
+      // The prevInput test prevents this from firing when a context
+      // menu is closed (since the resetInput would kill the
+      // select-all detection hack)
+      if (!cm.curOp && cm.display.selForContextMenu == cm.doc.sel) {
+        resetInput(cm);
+        if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730
+      }
+    }
+    slowPoll(cm);
+    restartBlink(cm);
+  }
+  function onBlur(cm) {
+    if (cm.state.focused) {
+      signal(cm, "blur", cm);
+      cm.state.focused = false;
+      rmClass(cm.display.wrapper, "CodeMirror-focused");
+    }
+    clearInterval(cm.display.blinker);
+    setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
+  }
+
+  // CONTEXT MENU HANDLING
+
+  var detectingSelectAll;
+  // To make the context menu work, we need to briefly unhide the
+  // textarea (making it as unobtrusive as possible) to let the
+  // right-click take effect on it.
+  function onContextMenu(cm, e) {
+    if (signalDOMEvent(cm, e, "contextmenu")) return;
+    var display = cm.display;
+    if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;
+
+    var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
+    if (!pos || presto) return; // Opera is difficult.
+
+    // Reset the current text selection only if the click is done outside of the selection
+    // and 'resetSelectionOnContextMenu' option is true.
+    var reset = cm.options.resetSelectionOnContextMenu;
+    if (reset && cm.doc.sel.contains(pos) == -1)
+      operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);
+
+    var oldCSS = display.input.style.cssText;
+    display.inputDiv.style.position = "absolute";
+    display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
+      "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
+      (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
+      "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
+    focusInput(cm);
+    resetInput(cm);
+    // Adds "Select all" to context menu in FF
+    if (!cm.somethingSelected()) display.input.value = display.prevInput = " ";
+    display.selForContextMenu = cm.doc.sel;
+
+    // Select-all will be greyed out if there's nothing to select, so
+    // this adds a zero-width space so that we can later check whether
+    // it got selected.
+    function prepareSelectAllHack() {
+      if (display.input.selectionStart != null) {
+        var selected = cm.somethingSelected();
+        var extval = display.input.value = "\u200b" + (selected ? display.input.value : "");
+        display.prevInput = selected ? "" : "\u200b";
+        display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
+      }
+    }
+    function rehide() {
+      display.inputDiv.style.position = "relative";
+      display.input.style.cssText = oldCSS;
+      if (ie_upto8) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
+      slowPoll(cm);
+
+      // Try to detect the user choosing select-all
+      if (display.input.selectionStart != null) {
+        if (!ie || ie_upto8) prepareSelectAllHack();
+        clearTimeout(detectingSelectAll);
+        var i = 0, poll = function() {
+          if (display.selForContextMenu == cm.doc.sel && display.input.selectionStart == 0)
+            operation(cm, commands.selectAll)(cm);
+          else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
+          else resetInput(cm);
+        };
+        detectingSelectAll = setTimeout(poll, 200);
+      }
+    }
+
+    if (ie && !ie_upto8) prepareSelectAllHack();
+    if (captureRightClick) {
+      e_stop(e);
+      var mouseup = function() {
+        off(window, "mouseup", mouseup);
+        setTimeout(rehide, 20);
+      };
+      on(window, "mouseup", mouseup);
+    } else {
+      setTimeout(rehide, 50);
+    }
+  }
+
+  function contextMenuInGutter(cm, e) {
+    if (!hasHandler(cm, "gutterContextMenu")) return false;
+    return gutterEvent(cm, e, "gutterContextMenu", false, signal);
+  }
+
+  // UPDATING
+
+  // Compute the position of the end of a change (its 'to' property
+  // refers to the pre-change end).
+  var changeEnd = CodeMirror.changeEnd = function(change) {
+    if (!change.text) return change.to;
+    return Pos(change.from.line + change.text.length - 1,
+               lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
+  };
+
+  // Adjust a position to refer to the post-change position of the
+  // same text, or the end of the change if the change covers it.
+  function adjustForChange(pos, change) {
+    if (cmp(pos, change.from) < 0) return pos;
+    if (cmp(pos, change.to) <= 0) return changeEnd(change);
+
+    var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
+    if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
+    return Pos(line, ch);
+  }
+
+  function computeSelAfterChange(doc, change) {
+    var out = [];
+    for (var i = 0; i < doc.sel.ranges.length; i++) {
+      var range = doc.sel.ranges[i];
+      out.push(new Range(adjustForChange(range.anchor, change),
+                         adjustForChange(range.head, change)));
+    }
+    return normalizeSelection(out, doc.sel.primIndex);
+  }
+
+  function offsetPos(pos, old, nw) {
+    if (pos.line == old.line)
+      return Pos(nw.line, pos.ch - old.ch + nw.ch);
+    else
+      return Pos(nw.line + (pos.line - old.line), pos.ch);
+  }
+
+  // Used by replaceSelections to allow moving the selection to the
+  // start or around the replaced test. Hint may be "start" or "around".
+  function computeReplacedSel(doc, changes, hint) {
+    var out = [];
+    var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
+    for (var i = 0; i < changes.length; i++) {
+      var change = changes[i];
+      var from = offsetPos(change.from, oldPrev, newPrev);
+      var to = offsetPos(changeEnd(change), oldPrev, newPrev);
+      oldPrev = change.to;
+      newPrev = to;
+      if (hint == "around") {
+        var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
+        out[i] = new Range(inv ? to : from, inv ? from : to);
+      } else {
+        out[i] = new Range(from, from);
+      }
+    }
+    return new Selection(out, doc.sel.primIndex);
+  }
+
+  // Allow "beforeChange" event handlers to influence a change
+  function filterChange(doc, change, update) {
+    var obj = {
+      canceled: false,
+      from: change.from,
+      to: change.to,
+      text: change.text,
+      origin: change.origin,
+      cancel: function() { this.canceled = true; }
+    };
+    if (update) obj.update = function(from, to, text, origin) {
+      if (from) this.from = clipPos(doc, from);
+      if (to) this.to = clipPos(doc, to);
+      if (text) this.text = text;
+      if (origin !== undefined) this.origin = origin;
+    };
+    signal(doc, "beforeChange", doc, obj);
+    if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);
+
+    if (obj.canceled) return null;
+    return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
+  }
+
+  // Apply a change to a document, and add it to the document's
+  // history, and propagating it to all linked documents.
+  function makeChange(doc, change, ignoreReadOnly) {
+    if (doc.cm) {
+      if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
+      if (doc.cm.state.suppressEdits) return;
+    }
+
+    if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
+      change = filterChange(doc, change, true);
+      if (!change) return;
+    }
+
+    // Possibly split or suppress the update based on the presence
+    // of read-only spans in its range.
+    var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
+    if (split) {
+      for (var i = split.length - 1; i >= 0; --i)
+        makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
+    } else {
+      makeChangeInner(doc, change);
+    }
+  }
+
+  function makeChangeInner(doc, change) {
+    if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
+    var selAfter = computeSelAfterChange(doc, change);
+    addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
+
+    makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
+    var rebased = [];
+
+    linkedDocs(doc, function(doc, sharedHist) {
+      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
+        rebaseHist(doc.history, change);
+        rebased.push(doc.history);
+      }
+      makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
+    });
+  }
+
+  // Revert a change stored in a document's history.
+  function makeChangeFromHistory(doc, type, allowSelectionOnly) {
+    if (doc.cm && doc.cm.state.suppressEdits) return;
+
+    var hist = doc.history, event, selAfter = doc.sel;
+    var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
+
+    // Verify that there is a useable event (so that ctrl-z won't
+    // needlessly clear selection events)
+    for (var i = 0; i < source.length; i++) {
+      event = source[i];
+      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
+        break;
+    }
+    if (i == source.length) return;
+    hist.lastOrigin = hist.lastSelOrigin = null;
+
+    for (;;) {
+      event = source.pop();
+      if (event.ranges) {
+        pushSelectionToHistory(event, dest);
+        if (allowSelectionOnly && !event.equals(doc.sel)) {
+          setSelection(doc, event, {clearRedo: false});
+          return;
+        }
+        selAfter = event;
+      }
+      else break;
+    }
+
+    // Build up a reverse change object to add to the opposite history
+    // stack (redo when undoing, and vice versa).
+    var antiChanges = [];
+    pushSelectionToHistory(selAfter, dest);
+    dest.push({changes: antiChanges, generation: hist.generation});
+    hist.generation = event.generation || ++hist.maxGeneration;
+
+    var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
+
+    for (var i = event.changes.length - 1; i >= 0; --i) {
+      var change = event.changes[i];
+      change.origin = type;
+      if (filter && !filterChange(doc, change, false)) {
+        source.length = 0;
+        return;
+      }
+
+      antiChanges.push(historyChangeFromChange(doc, change));
+
+      var after = i ? computeSelAfterChange(doc, change, null) : lst(source);
+      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
+      if (doc.cm) ensureCursorVisible(doc.cm);
+      var rebased = [];
+
+      // Propagate to the linked documents
+      linkedDocs(doc, function(doc, sharedHist) {
+        if (!sharedHist && indexOf(rebased, doc.history) == -1) {
+          rebaseHist(doc.history, change);
+          rebased.push(doc.history);
+        }
+        makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
+      });
+    }
+  }
+
+  // Sub-views need their line numbers shifted when text is added
+  // above or below them in the parent document.
+  function shiftDoc(doc, distance) {
+    doc.first += distance;
+    doc.sel = new Selection(map(doc.sel.ranges, function(range) {
+      return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
+                       Pos(range.head.line + distance, range.head.ch));
+    }), doc.sel.primIndex);
+    if (doc.cm) regChange(doc.cm, doc.first, doc.first - distance, distance);
+  }
+
+  // More lower-level change function, handling only a single document
+  // (not linked ones).
+  function makeChangeSingleDoc(doc, change, selAfter, spans) {
+    if (doc.cm && !doc.cm.curOp)
+      return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);
+
+    if (change.to.line < doc.first) {
+      shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
+      return;
+    }
+    if (change.from.line > doc.lastLine()) return;
+
+    // Clip the change to the size of this doc
+    if (change.from.line < doc.first) {
+      var shift = change.text.length - 1 - (doc.first - change.from.line);
+      shiftDoc(doc, shift);
+      change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
+                text: [lst(change.text)], origin: change.origin};
+    }
+    var last = doc.lastLine();
+    if (change.to.line > last) {
+      change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
+                text: [change.text[0]], origin: change.origin};
+    }
+
+    change.removed = getBetween(doc, change.from, change.to);
+
+    if (!selAfter) selAfter = computeSelAfterChange(doc, change, null);
+    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
+    else updateDoc(doc, change, spans);
+    setSelectionNoUndo(doc, selAfter, sel_dontScroll);
+  }
+
+  // Handle the interaction of a change to a document with the editor
+  // that this document is part of.
+  function makeChangeSingleDocInEditor(cm, change, spans) {
+    var doc = cm.doc, display = cm.display, from = change.from, to = change.to;
+
+    var recomputeMaxLength = false, checkWidthStart = from.line;
+    if (!cm.options.lineWrapping) {
+      checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
+      doc.iter(checkWidthStart, to.line + 1, function(line) {
+        if (line == display.maxLine) {
+          recomputeMaxLength = true;
+          return true;
+        }
+      });
+    }
+
+    if (doc.sel.contains(change.from, change.to) > -1)
+      signalCursorActivity(cm);
+
+    updateDoc(doc, change, spans, estimateHeight(cm));
+
+    if (!cm.options.lineWrapping) {
+      doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
+        var len = lineLength(line);
+        if (len > display.maxLineLength) {
+          display.maxLine = line;
+          display.maxLineLength = len;
+          display.maxLineChanged = true;
+          recomputeMaxLength = false;
+        }
+      });
+      if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
+    }
+
+    // Adjust frontier, schedule worker
+    doc.frontier = Math.min(doc.frontier, from.line);
+    startWorker(cm, 400);
+
+    var lendiff = change.text.length - (to.line - from.line) - 1;
+    // Remember that these lines changed, for updating the display
+    if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
+      regLineChange(cm, from.line, "text");
+    else
+      regChange(cm, from.line, to.line + 1, lendiff);
+
+    var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change");
+    if (changeHandler || changesHandler) {
+      var obj = {
+        from: from, to: to,
+        text: change.text,
+        removed: change.removed,
+        origin: change.origin
+      };
+      if (changeHandler) signalLater(cm, "change", cm, obj);
+      if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj);
+    }
+  }
+
+  function replaceRange(doc, code, from, to, origin) {
+    if (!to) to = from;
+    if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
+    if (typeof code == "string") code = splitLines(code);
+    makeChange(doc, {from: from, to: to, text: code, origin: origin});
+  }
+
+  // SCROLLING THINGS INTO VIEW
+
+  // If an editor sits on the top or bottom of the window, partially
+  // scrolled out of view, this ensures that the cursor is visible.
+  function maybeScrollWindow(cm, coords) {
+    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
+    if (coords.top + box.top < 0) doScroll = true;
+    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
+    if (doScroll != null && !phantom) {
+      var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
+                           (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
+                           (coords.bottom - coords.top + scrollerCutOff) + "px; left: " +
+                           coords.left + "px; width: 2px;");
+      cm.display.lineSpace.appendChild(scrollNode);
+      scrollNode.scrollIntoView(doScroll);
+      cm.display.lineSpace.removeChild(scrollNode);
+    }
+  }
+
+  // Scroll a given position into view (immediately), verifying that
+  // it actually became visible (as line heights are accurately
+  // measured, the position of something may 'drift' during drawing).
+  function scrollPosIntoView(cm, pos, end, margin) {
+    if (margin == null) margin = 0;
+    for (;;) {
+      var changed = false, coords = cursorCoords(cm, pos);
+      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
+      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
+                                         Math.min(coords.top, endCoords.top) - margin,
+                                         Math.max(coords.left, endCoords.left),
+                                         Math.max(coords.bottom, endCoords.bottom) + margin);
+      var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
+      if (scrollPos.scrollTop != null) {
+        setScrollTop(cm, scrollPos.scrollTop);
+        if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
+      }
+      if (scrollPos.scrollLeft != null) {
+        setScrollLeft(cm, scrollPos.scrollLeft);
+        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
+      }
+      if (!changed) return coords;
+    }
+  }
+
+  // Scroll a given set of coordinates into view (immediately).
+  function scrollIntoView(cm, x1, y1, x2, y2) {
+    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
+    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
+    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
+  }
+
+  // Calculate a new scroll position needed to scroll the given
+  // rectangle into view. Returns an object with scrollTop and
+  // scrollLeft properties. When these are undefined, the
+  // vertical/horizontal position does not need to be adjusted.
+  function calculateScrollPos(cm, x1, y1, x2, y2) {
+    var display = cm.display, snapMargin = textHeight(cm.display);
+    if (y1 < 0) y1 = 0;
+    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
+    var screen = display.scroller.clientHeight - scrollerCutOff, result = {};
+    var docBottom = cm.doc.height + paddingVert(display);
+    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
+    if (y1 < screentop) {
+      result.scrollTop = atTop ? 0 : y1;
+    } else if (y2 > screentop + screen) {
+      var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
+      if (newTop != screentop) result.scrollTop = newTop;
+    }
+
+    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
+    var screenw = display.scroller.clientWidth - scrollerCutOff;
+    x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
+    var gutterw = display.gutters.offsetWidth;
+    var atLeft = x1 < gutterw + 10;
+    if (x1 < screenleft + gutterw || atLeft) {
+      if (atLeft) x1 = 0;
+      result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
+    } else if (x2 > screenw + screenleft - 3) {
+      result.scrollLeft = x2 + 10 - screenw;
+    }
+    return result;
+  }
+
+  // Store a relative adjustment to the scroll position in the current
+  // operation (to be applied when the operation finishes).
+  function addToScrollPos(cm, left, top) {
+    if (left != null || top != null) resolveScrollToPos(cm);
+    if (left != null)
+      cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
+    if (top != null)
+      cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
+  }
+
+  // Make sure that at the end of the operation the current cursor is
+  // shown.
+  function ensureCursorVisible(cm) {
+    resolveScrollToPos(cm);
+    var cur = cm.getCursor(), from = cur, to = cur;
+    if (!cm.options.lineWrapping) {
+      from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
+      to = Pos(cur.line, cur.ch + 1);
+    }
+    cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
+  }
+
+  // When an operation has its scrollToPos property set, and another
+  // scroll action is applied before the end of the operation, this
+  // 'simulates' scrolling that position into view in a cheap way, so
+  // that the effect of intermediate scroll commands is not ignored.
+  function resolveScrollToPos(cm) {
+    var range = cm.curOp.scrollToPos;
+    if (range) {
+      cm.curOp.scrollToPos = null;
+      var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
+      var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
+                                    Math.min(from.top, to.top) - range.margin,
+                                    Math.max(from.right, to.right),
+                                    Math.max(from.bottom, to.bottom) + range.margin);
+      cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
+    }
+  }
+
+  // API UTILITIES
+
+  // Indent the given line. The how parameter can be "smart",
+  // "add"/null, "subtract", or "prev". When aggressive is false
+  // (typically set to true for forced single-line indents), empty
+  // lines are not indented, and places where the mode returns Pass
+  // are left alone.
+  function indentLine(cm, n, how, aggressive) {
+    var doc = cm.doc, state;
+    if (how == null) how = "add";
+    if (how == "smart") {
+      // Fall back to "prev" when the mode doesn't have an indentation
+      // method.
+      if (!cm.doc.mode.indent) how = "prev";
+      else state = getStateBefore(cm, n);
+    }
+
+    var tabSize = cm.options.tabSize;
+    var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
+    if (line.stateAfter) line.stateAfter = null;
+    var curSpaceString = line.text.match(/^\s*/)[0], indentation;
+    if (!aggressive && !/\S/.test(line.text)) {
+      indentation = 0;
+      how = "not";
+    } else if (how == "smart") {
+      indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+      if (indentation == Pass) {
+        if (!aggressive) return;
+        how = "prev";
+      }
+    }
+    if (how == "prev") {
+      if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
+      else indentation = 0;
+    } else if (how == "add") {
+      indentation = curSpace + cm.options.indentUnit;
+    } else if (how == "subtract") {
+      indentation = curSpace - cm.options.indentUnit;
+    } else if (typeof how == "number") {
+      indentation = curSpace + how;
+    }
+    indentation = Math.max(0, indentation);
+
+    var indentString = "", pos = 0;
+    if (cm.options.indentWithTabs)
+      for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
+    if (pos < indentation) indentString += spaceStr(indentation - pos);
+
+    if (indentString != curSpaceString) {
+      replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
+    } else {
+      // Ensure that, if the cursor was in the whitespace at the start
+      // of the line, it is moved to the end of that space.
+      for (var i = 0; i < doc.sel.ranges.length; i++) {
+        var range = doc.sel.ranges[i];
+        if (range.head.line == n && range.head.ch < curSpaceString.length) {
+          var pos = Pos(n, curSpaceString.length);
+          replaceOneSelection(doc, i, new Range(pos, pos));
+          break;
+        }
+      }
+    }
+    line.stateAfter = null;
+  }
+
+  // Utility for applying a change to a line by handle or number,
+  // returning the number and optionally registering the line as
+  // changed.
+  function changeLine(cm, handle, changeType, op) {
+    var no = handle, line = handle, doc = cm.doc;
+    if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
+    else no = lineNo(handle);
+    if (no == null) return null;
+    if (op(line, no)) regLineChange(cm, no, changeType);
+    return line;
+  }
+
+  // Helper for deleting text near the selection(s), used to implement
+  // backspace, delete, and similar functionality.
+  function deleteNearSelection(cm, compute) {
+    var ranges = cm.doc.sel.ranges, kill = [];
+    // Build up a set of ranges to kill first, merging overlapping
+    // ranges.
+    for (var i = 0; i < ranges.length; i++) {
+      var toKill = compute(ranges[i]);
+      while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
+        var replaced = kill.pop();
+        if (cmp(replaced.from, toKill.from) < 0) {
+          toKill.from = replaced.from;
+          break;
+        }
+      }
+      kill.push(toKill);
+    }
+    // Next, remove those actual ranges.
+    runInOp(cm, function() {
+      for (var i = kill.length - 1; i >= 0; i--)
+        replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
+      ensureCursorVisible(cm);
+    });
+  }
+
+  // Used for horizontal relative motion. Dir is -1 or 1 (left or
+  // right), unit can be "char", "column" (like char, but doesn't
+  // cross line boundaries), "word" (across next word), or "group" (to
+  // the start of next group of word or non-word-non-whitespace
+  // chars). The visually param controls whether, in right-to-left
+  // text, direction 1 means to move towards the next index in the
+  // string, or towards the character to the right of the current
+  // position. The resulting position will have a hitSide=true
+  // property if it reached the end of the document.
+  function findPosH(doc, pos, dir, unit, visually) {
+    var line = pos.line, ch = pos.ch, origDir = dir;
+    var lineObj = getLine(doc, line);
+    var possible = true;
+    function findNextLine() {
+      var l = line + dir;
+      if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
+      line = l;
+      return lineObj = getLine(doc, l);
+    }
+    function moveOnce(boundToLine) {
+      var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
+      if (next == null) {
+        if (!boundToLine && findNextLine()) {
+          if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
+          else ch = dir < 0 ? lineObj.text.length : 0;
+        } else return (possible = false);
+      } else ch = next;
+      return true;
+    }
+
+    if (unit == "char") moveOnce();
+    else if (unit == "column") moveOnce(true);
+    else if (unit == "word" || unit == "group") {
+      var sawType = null, group = unit == "group";
+      for (var first = true;; first = false) {
+        if (dir < 0 && !moveOnce(!first)) break;
+        var cur = lineObj.text.charAt(ch) || "\n";
+        var type = isWordChar(cur) ? "w"
+          : group && cur == "\n" ? "n"
+          : !group || /\s/.test(cur) ? null
+          : "p";
+        if (group && !first && !type) type = "s";
+        if (sawType && sawType != type) {
+          if (dir < 0) {dir = 1; moveOnce();}
+          break;
+        }
+
+        if (type) sawType = type;
+        if (dir > 0 && !moveOnce(!first)) break;
+      }
+    }
+    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
+    if (!possible) result.hitSide = true;
+    return result;
+  }
+
+  // For relative vertical movement. Dir may be -1 or 1. Unit can be
+  // "page" or "line". The resulting position will have a hitSide=true
+  // property if it reached the end of the document.
+  function findPosV(cm, pos, dir, unit) {
+    var doc = cm.doc, x = pos.left, y;
+    if (unit == "page") {
+      var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
+      y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
+    } else if (unit == "line") {
+      y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
+    }
+    for (;;) {
+      var target = coordsChar(cm, x, y);
+      if (!target.outside) break;
+      if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
+      y += dir * 5;
+    }
+    return target;
+  }
+
+  // Find the word at the given position (as returned by coordsChar).
+  function findWordAt(doc, pos) {
+    var line = getLine(doc, pos.line).text;
+    var start = pos.ch, end = pos.ch;
+    if (line) {
+      if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
+      var startChar = line.charAt(start);
+      var check = isWordChar(startChar) ? isWordChar
+        : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
+        : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
+      while (start > 0 && check(line.charAt(start - 1))) --start;
+      while (end < line.length && check(line.charAt(end))) ++end;
+    }
+    return new Range(Pos(pos.line, start), Pos(pos.line, end));
+  }
+
+  // EDITOR METHODS
+
+  // The publicly visible API. Note that methodOp(f) means
+  // 'wrap f in an operation, performed on its `this` parameter'.
+
+  // This is not the complete set of editor methods. Most of the
+  // methods defined on the Doc type are also injected into
+  // CodeMirror.prototype, for backwards compatibility and
+  // convenience.
+
+  CodeMirror.prototype = {
+    constructor: CodeMirror,
+    focus: function(){window.focus(); focusInput(this); fastPoll(this);},
+
+    setOption: function(option, value) {
+      var options = this.options, old = options[option];
+      if (options[option] == value && option != "mode") return;
+      options[option] = value;
+      if (optionHandlers.hasOwnProperty(option))
+        operation(this, optionHandlers[option])(this, value, old);
+    },
+
+    getOption: function(option) {return this.options[option];},
+    getDoc: function() {return this.doc;},
+
+    addKeyMap: function(map, bottom) {
+      this.state.keyMaps[bottom ? "push" : "unshift"](map);
+    },
+    removeKeyMap: function(map) {
+      var maps = this.state.keyMaps;
+      for (var i = 0; i < maps.length; ++i)
+        if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) {
+          maps.splice(i, 1);
+          return true;
+        }
+    },
+
+    addOverlay: methodOp(function(spec, options) {
+      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
+      if (mode.startState) throw new Error("Overlays may not be stateful.");
+      this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
+      this.state.modeGen++;
+      regChange(this);
+    }),
+    removeOverlay: methodOp(function(spec) {
+      var overlays = this.state.overlays;
+      for (var i = 0; i < overlays.length; ++i) {
+        var cur = overlays[i].modeSpec;
+        if (cur == spec || typeof spec == "string" && cur.name == spec) {
+          overlays.splice(i, 1);
+          this.state.modeGen++;
+          regChange(this);
+          return;
+        }
+      }
+    }),
+
+    indentLine: methodOp(function(n, dir, aggressive) {
+      if (typeof dir != "string" && typeof dir != "number") {
+        if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
+        else dir = dir ? "add" : "subtract";
+      }
+      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
+    }),
+    indentSelection: methodOp(function(how) {
+      var ranges = this.doc.sel.ranges, end = -1;
+      for (var i = 0; i < ranges.length; i++) {
+        var range = ranges[i];
+        if (!range.empty()) {
+          var start = Math.max(end, range.from().line);
+          var to = range.to();
+          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
+          for (var j = start; j < end; ++j)
+            indentLine(this, j, how);
+        } else if (range.head.line > end) {
+          indentLine(this, range.head.line, how, true);
+          end = range.head.line;
+          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
+        }
+      }
+    }),
+
+    // Fetch the parser token for a given character. Useful for hacks
+    // that want to inspect the mode state (say, for completion).
+    getTokenAt: function(pos, precise) {
+      var doc = this.doc;
+      pos = clipPos(doc, pos);
+      var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode;
+      var line = getLine(doc, pos.line);
+      var stream = new StringStream(line.text, this.options.tabSize);
+      while (stream.pos < pos.ch && !stream.eol()) {
+        stream.start = stream.pos;
+        var style = readToken(mode, stream, state);
+      }
+      return {start: stream.start,
+              end: stream.pos,
+              string: stream.current(),
+              type: style || null,
+              state: state};
+    },
+
+    getTokenTypeAt: function(pos) {
+      pos = clipPos(this.doc, pos);
+      var styles = getLineStyles(this, getLine(this.doc, pos.line));
+      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
+      var type;
+      if (ch == 0) type = styles[2];
+      else for (;;) {
+        var mid = (before + after) >> 1;
+        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
+        else if (styles[mid * 2 + 1] < ch) before = mid + 1;
+        else { type = styles[mid * 2 + 2]; break; }
+      }
+      var cut = type ? type.indexOf("cm-overlay ") : -1;
+      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);
+    },
+
+    getModeAt: function(pos) {
+      var mode = this.doc.mode;
+      if (!mode.innerMode) return mode;
+      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
+    },
+
+    getHelper: function(pos, type) {
+      return this.getHelpers(pos, type)[0];
+    },
+
+    getHelpers: function(pos, type) {
+      var found = [];
+      if (!helpers.hasOwnProperty(type)) return helpers;
+      var help = helpers[type], mode = this.getModeAt(pos);
+      if (typeof mode[type] == "string") {
+        if (help[mode[type]]) found.push(help[mode[type]]);
+      } else if (mode[type]) {
+        for (var i = 0; i < mode[type].length; i++) {
+          var val = help[mode[type][i]];
+          if (val) found.push(val);
+        }
+      } else if (mode.helperType && help[mode.helperType]) {
+        found.push(help[mode.helperType]);
+      } else if (help[mode.name]) {
+        found.push(help[mode.name]);
+      }
+      for (var i = 0; i < help._global.length; i++) {
+        var cur = help._global[i];
+        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
+          found.push(cur.val);
+      }
+      return found;
+    },
+
+    getStateAfter: function(line, precise) {
+      var doc = this.doc;
+      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
+      return getStateBefore(this, line + 1, precise);
+    },
+
+    cursorCoords: function(start, mode) {
+      var pos, range = this.doc.sel.primary();
+      if (start == null) pos = range.head;
+      else if (typeof start == "object") pos = clipPos(this.doc, start);
+      else pos = start ? range.from() : range.to();
+      return cursorCoords(this, pos, mode || "page");
+    },
+
+    charCoords: function(pos, mode) {
+      return charCoords(this, clipPos(this.doc, pos), mode || "page");
+    },
+
+    coordsChar: function(coords, mode) {
+      coords = fromCoordSystem(this, coords, mode || "page");
+      return coordsChar(this, coords.left, coords.top);
+    },
+
+    lineAtHeight: function(height, mode) {
+      height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
+      return lineAtHeight(this.doc, height + this.display.viewOffset);
+    },
+    heightAtLine: function(line, mode) {
+      var end = false, last = this.doc.first + this.doc.size - 1;
+      if (line < this.doc.first) line = this.doc.first;
+      else if (line > last) { line = last; end = true; }
+      var lineObj = getLine(this.doc, line);
+      return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top +
+        (end ? this.doc.height - heightAtLine(lineObj) : 0);
+    },
+
+    defaultTextHeight: function() { return textHeight(this.display); },
+    defaultCharWidth: function() { return charWidth(this.display); },
+
+    setGutterMarker: methodOp(function(line, gutterID, value) {
+      return changeLine(this, line, "gutter", function(line) {
+        var markers = line.gutterMarkers || (line.gutterMarkers = {});
+        markers[gutterID] = value;
+        if (!value && isEmpty(markers)) line.gutterMarkers = null;
+        return true;
+      });
+    }),
+
+    clearGutter: methodOp(function(gutterID) {
+      var cm = this, doc = cm.doc, i = doc.first;
+      doc.iter(function(line) {
+        if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
+          line.gutterMarkers[gutterID] = null;
+          regLineChange(cm, i, "gutter");
+          if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
+        }
+        ++i;
+      });
+    }),
+
+    addLineClass: methodOp(function(handle, where, cls) {
+      return changeLine(this, handle, "class", function(line) {
+        var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
+        if (!line[prop]) line[prop] = cls;
+        else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false;
+        else line[prop] += " " + cls;
+        return true;
+      });
+    }),
+
+    removeLineClass: methodOp(function(handle, where, cls) {
+      return changeLine(this, handle, "class", function(line) {
+        var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
+        var cur = line[prop];
+        if (!cur) return false;
+        else if (cls == null) line[prop] = null;
+        else {
+          var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)"));
+          if (!found) return false;
+          var end = found.index + found[0].length;
+          line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
+        }
+        return true;
+      });
+    }),
+
+    addLineWidget: methodOp(function(handle, node, options) {
+      return addLineWidget(this, handle, node, options);
+    }),
+
+    removeLineWidget: function(widget) { widget.clear(); },
+
+    lineInfo: function(line) {
+      if (typeof line == "number") {
+        if (!isLine(this.doc, line)) return null;
+        var n = line;
+        line = getLine(this.doc, line);
+        if (!line) return null;
+      } else {
+        var n = lineNo(line);
+        if (n == null) return null;
+      }
+      return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
+              textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
+              widgets: line.widgets};
+    },
+
+    getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},
+
+    addWidget: function(pos, node, scroll, vert, horiz) {
+      var display = this.display;
+      pos = cursorCoords(this, clipPos(this.doc, pos));
+      var top = pos.bottom, left = pos.left;
+      node.style.position = "absolute";
+      display.sizer.appendChild(node);
+      if (vert == "over") {
+        top = pos.top;
+      } else if (vert == "above" || vert == "near") {
+        var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
+        hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
+        // Default to positioning above (if specified and possible); otherwise default to positioning below
+        if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
+          top = pos.top - node.offsetHeight;
+        else if (pos.bottom + node.offsetHeight <= vspace)
+          top = pos.bottom;
+        if (left + node.offsetWidth > hspace)
+          left = hspace - node.offsetWidth;
+      }
+      node.style.top = top + "px";
+      node.style.left = node.style.right = "";
+      if (horiz == "right") {
+        left = display.sizer.clientWidth - node.offsetWidth;
+        node.style.right = "0px";
+      } else {
+        if (horiz == "left") left = 0;
+        else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
+        node.style.left = left + "px";
+      }
+      if (scroll)
+        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
+    },
+
+    triggerOnKeyDown: methodOp(onKeyDown),
+    triggerOnKeyPress: methodOp(onKeyPress),
+    triggerOnKeyUp: methodOp(onKeyUp),
+
+    execCommand: function(cmd) {
+      if (commands.hasOwnProperty(cmd))
+        return commands[cmd](this);
+    },
+
+    findPosH: function(from, amount, unit, visually) {
+      var dir = 1;
+      if (amount < 0) { dir = -1; amount = -amount; }
+      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
+        cur = findPosH(this.doc, cur, dir, unit, visually);
+        if (cur.hitSide) break;
+      }
+      return cur;
+    },
+
+    moveH: methodOp(function(dir, unit) {
+      var cm = this;
+      cm.extendSelectionsBy(function(range) {
+        if (cm.display.shift || cm.doc.extend || range.empty())
+          return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
+        else
+          return dir < 0 ? range.from() : range.to();
+      }, sel_move);
+    }),
+
+    deleteH: methodOp(function(dir, unit) {
+      var sel = this.doc.sel, doc = this.doc;
+      if (sel.somethingSelected())
+        doc.replaceSelection("", null, "+delete");
+      else
+        deleteNearSelection(this, function(range) {
+          var other = findPosH(doc, range.head, dir, unit, false);
+          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
+        });
+    }),
+
+    findPosV: function(from, amount, unit, goalColumn) {
+      var dir = 1, x = goalColumn;
+      if (amount < 0) { dir = -1; amount = -amount; }
+      for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
+        var coords = cursorCoords(this, cur, "div");
+        if (x == null) x = coords.left;
+        else coords.left = x;
+        cur = findPosV(this, coords, dir, unit);
+        if (cur.hitSide) break;
+      }
+      return cur;
+    },
+
+    moveV: methodOp(function(dir, unit) {
+      var cm = this, doc = this.doc, goals = [];
+      var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
+      doc.extendSelectionsBy(function(range) {
+        if (collapse)
+          return dir < 0 ? range.from() : range.to();
+        var headPos = cursorCoords(cm, range.head, "div");
+        if (range.goalColumn != null) headPos.left = range.goalColumn;
+        goals.push(headPos.left);
+        var pos = findPosV(cm, headPos, dir, unit);
+        if (unit == "page" && range == doc.sel.primary())
+          addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
+        return pos;
+      }, sel_move);
+      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
+        doc.sel.ranges[i].goalColumn = goals[i];
+    }),
+
+    toggleOverwrite: function(value) {
+      if (value != null && value == this.state.overwrite) return;
+      if (this.state.overwrite = !this.state.overwrite)
+        addClass(this.display.cursorDiv, "CodeMirror-overwrite");
+      else
+        rmClass(this.display.cursorDiv, "CodeMirror-overwrite");
+
+      signal(this, "overwriteToggle", this, this.state.overwrite);
+    },
+    hasFocus: function() { return activeElt() == this.display.input; },
+
+    scrollTo: methodOp(function(x, y) {
+      if (x != null || y != null) resolveScrollToPos(this);
+      if (x != null) this.curOp.scrollLeft = x;
+      if (y != null) this.curOp.scrollTop = y;
+    }),
+    getScrollInfo: function() {
+      var scroller = this.display.scroller, co = scrollerCutOff;
+      return {left: scroller.scrollLeft, top: scroller.scrollTop,
+              height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
+              clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
+    },
+
+    scrollIntoView: methodOp(function(range, margin) {
+      if (range == null) {
+        range = {from: this.doc.sel.primary().head, to: null};
+        if (margin == null) margin = this.options.cursorScrollMargin;
+      } else if (typeof range == "number") {
+        range = {from: Pos(range, 0), to: null};
+      } else if (range.from == null) {
+        range = {from: range, to: null};
+      }
+      if (!range.to) range.to = range.from;
+      range.margin = margin || 0;
+
+      if (range.from.line != null) {
+        resolveScrollToPos(this);
+        this.curOp.scrollToPos = range;
+      } else {
+        var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
+                                      Math.min(range.from.top, range.to.top) - range.margin,
+                                      Math.max(range.from.right, range.to.right),
+                                      Math.max(range.from.bottom, range.to.bottom) + range.margin);
+        this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
+      }
+    }),
+
+    setSize: methodOp(function(width, height) {
+      function interpret(val) {
+        return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
+      }
+      if (width != null) this.display.wrapper.style.width = interpret(width);
+      if (height != null) this.display.wrapper.style.height = interpret(height);
+      if (this.options.lineWrapping) clearLineMeasurementCache(this);
+      this.curOp.forceUpdate = true;
+      signal(this, "refresh", this);
+    }),
+
+    operation: function(f){return runInOp(this, f);},
+
+    refresh: methodOp(function() {
+      var oldHeight = this.display.cachedTextHeight;
+      regChange(this);
+      this.curOp.forceUpdate = true;
+      clearCaches(this);
+      this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
+      updateGutterSpace(this);
+      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
+        estimateLineHeights(this);
+      signal(this, "refresh", this);
+    }),
+
+    swapDoc: methodOp(function(doc) {
+      var old = this.doc;
+      old.cm = null;
+      attachDoc(this, doc);
+      clearCaches(this);
+      resetInput(this);
+      this.scrollTo(doc.scrollLeft, doc.scrollTop);
+      signalLater(this, "swapDoc", this, old);
+      return old;
+    }),
+
+    getInputField: function(){return this.display.input;},
+    getWrapperElement: function(){return this.display.wrapper;},
+    getScrollerElement: function(){return this.display.scroller;},
+    getGutterElement: function(){return this.display.gutters;}
+  };
+  eventMixin(CodeMirror);
+
+  // OPTION DEFAULTS
+
+  // The default configuration options.
+  var defaults = CodeMirror.defaults = {};
+  // Functions to run when options are changed.
+  var optionHandlers = CodeMirror.optionHandlers = {};
+
+  function option(name, deflt, handle, notOnInit) {
+    CodeMirror.defaults[name] = deflt;
+    if (handle) optionHandlers[name] =
+      notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
+  }
+
+  // Passed to option handlers when there is no old value.
+  var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
+
+  // These two are, on init, called from the constructor because they
+  // have to be initialized before the editor can start at all.
+  option("value", "", function(cm, val) {
+    cm.setValue(val);
+  }, true);
+  option("mode", null, function(cm, val) {
+    cm.doc.modeOption = val;
+    loadMode(cm);
+  }, true);
+
+  option("indentUnit", 2, loadMode, true);
+  option("indentWithTabs", false);
+  option("smartIndent", true);
+  option("tabSize", 4, function(cm) {
+    resetModeState(cm);
+    clearCaches(cm);
+    regChange(cm);
+  }, true);
+  option("specialChars", /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/g, function(cm, val) {
+    cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
+    cm.refresh();
+  }, true);
+  option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
+  option("electricChars", true);
+  option("rtlMoveVisually", !windows);
+  option("wholeLineUpdateBefore", true);
+
+  option("theme", "default", function(cm) {
+    themeChanged(cm);
+    guttersChanged(cm);
+  }, true);
+  option("keyMap", "default", keyMapChanged);
+  option("extraKeys", null);
+
+  option("lineWrapping", false, wrappingChanged, true);
+  option("gutters", [], function(cm) {
+    setGuttersForLineNumbers(cm.options);
+    guttersChanged(cm);
+  }, true);
+  option("fixedGutter", true, function(cm, val) {
+    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
+    cm.refresh();
+  }, true);
+  option("coverGutterNextToScrollbar", false, updateScrollbars, true);
+  option("lineNumbers", false, function(cm) {
+    setGuttersForLineNumbers(cm.options);
+    guttersChanged(cm);
+  }, true);
+  option("firstLineNumber", 1, guttersChanged, true);
+  option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
+  option("showCursorWhenSelecting", false, updateSelection, true);
+
+  option("resetSelectionOnContextMenu", true);
+
+  option("readOnly", false, function(cm, val) {
+    if (val == "nocursor") {
+      onBlur(cm);
+      cm.display.input.blur();
+      cm.display.disabled = true;
+    } else {
+      cm.display.disabled = false;
+      if (!val) resetInput(cm);
+    }
+  });
+  option("disableInput", false, function(cm, val) {if (!val) resetInput(cm);}, true);
+  option("dragDrop", true);
+
+  option("cursorBlinkRate", 530);
+  option("cursorScrollMargin", 0);
+  option("cursorHeight", 1);
+  option("workTime", 100);
+  option("workDelay", 100);
+  option("flattenSpans", true, resetModeState, true);
+  option("addModeClass", false, resetModeState, true);
+  option("pollInterval", 100);
+  option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
+  option("historyEventDelay", 1250);
+  option("viewportMargin", 10, function(cm){cm.refresh();}, true);
+  option("maxHighlightLength", 10000, resetModeState, true);
+  option("moveInputWithCursor", true, function(cm, val) {
+    if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
+  });
+
+  option("tabindex", null, function(cm, val) {
+    cm.display.input.tabIndex = val || "";
+  });
+  option("autofocus", null);
+
+  // MODE DEFINITION AND QUERYING
+
+  // Known modes, by name and by MIME
+  var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
+
+  // Extra arguments are stored as the mode's dependencies, which is
+  // used by (legacy) mechanisms like loadmode.js to automatically
+  // load a mode. (Preferred mechanism is the require/define calls.)
+  CodeMirror.defineMode = function(name, mode) {
+    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
+    if (arguments.length > 2) {
+      mode.dependencies = [];
+      for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
+    }
+    modes[name] = mode;
+  };
+
+  CodeMirror.defineMIME = function(mime, spec) {
+    mimeModes[mime] = spec;
+  };
+
+  // Given a MIME type, a {name, ...options} config object, or a name
+  // string, return a mode config object.
+  CodeMirror.resolveMode = function(spec) {
+    if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
+      spec = mimeModes[spec];
+    } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
+      var found = mimeModes[spec.name];
+      if (typeof found == "string") found = {name: found};
+      spec = createObj(found, spec);
+      spec.name = found.name;
+    } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
+      return CodeMirror.resolveMode("application/xml");
+    }
+    if (typeof spec == "string") return {name: spec};
+    else return spec || {name: "null"};
+  };
+
+  // Given a mode spec (anything that resolveMode accepts), find and
+  // initialize an actual mode object.
+  CodeMirror.getMode = function(options, spec) {
+    var spec = CodeMirror.resolveMode(spec);
+    var mfactory = modes[spec.name];
+    if (!mfactory) return CodeMirror.getMode(options, "text/plain");
+    var modeObj = mfactory(options, spec);
+    if (modeExtensions.hasOwnProperty(spec.name)) {
+      var exts = modeExtensions[spec.name];
+      for (var prop in exts) {
+        if (!exts.hasOwnProperty(prop)) continue;
+        if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
+        modeObj[prop] = exts[prop];
+      }
+    }
+    modeObj.name = spec.name;
+    if (spec.helperType) modeObj.helperType = spec.helperType;
+    if (spec.modeProps) for (var prop in spec.modeProps)
+      modeObj[prop] = spec.modeProps[prop];
+
+    return modeObj;
+  };
+
+  // Minimal default mode.
+  CodeMirror.defineMode("null", function() {
+    return {token: function(stream) {stream.skipToEnd();}};
+  });
+  CodeMirror.defineMIME("text/plain", "null");
+
+  // This can be used to attach properties to mode objects from
+  // outside the actual mode definition.
+  var modeExtensions = CodeMirror.modeExtensions = {};
+  CodeMirror.extendMode = function(mode, properties) {
+    var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
+    copyObj(properties, exts);
+  };
+
+  // EXTENSIONS
+
+  CodeMirror.defineExtension = function(name, func) {
+    CodeMirror.prototype[name] = func;
+  };
+  CodeMirror.defineDocExtension = function(name, func) {
+    Doc.prototype[name] = func;
+  };
+  CodeMirror.defineOption = option;
+
+  var initHooks = [];
+  CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
+
+  var helpers = CodeMirror.helpers = {};
+  CodeMirror.registerHelper = function(type, name, value) {
+    if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
+    helpers[type][name] = value;
+  };
+  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
+    CodeMirror.registerHelper(type, name, value);
+    helpers[type]._global.push({pred: predicate, val: value});
+  };
+
+  // MODE STATE HANDLING
+
+  // Utility functions for working with state. Exported because nested
+  // modes need to do this for their inner modes.
+
+  var copyState = CodeMirror.copyState = function(mode, state) {
+    if (state === true) return state;
+    if (mode.copyState) return mode.copyState(state);
+    var nstate = {};
+    for (var n in state) {
+      var val = state[n];
+      if (val instanceof Array) val = val.concat([]);
+      nstate[n] = val;
+    }
+    return nstate;
+  };
+
+  var startState = CodeMirror.startState = function(mode, a1, a2) {
+    return mode.startState ? mode.startState(a1, a2) : true;
+  };
+
+  // Given a mode and a state (for that mode), find the inner mode and
+  // state at the position that the state refers to.
+  CodeMirror.innerMode = function(mode, state) {
+    while (mode.innerMode) {
+      var info = mode.innerMode(state);
+      if (!info || info.mode == mode) break;
+      state = info.state;
+      mode = info.mode;
+    }
+    return info || {mode: mode, state: state};
+  };
+
+  // STANDARD COMMANDS
+
+  // Commands are parameter-less actions that can be performed on an
+  // editor, mostly used for keybindings.
+  var commands = CodeMirror.commands = {
+    selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
+    singleSelection: function(cm) {
+      cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
+    },
+    killLine: function(cm) {
+      deleteNearSelection(cm, function(range) {
+        if (range.empty()) {
+          var len = getLine(cm.doc, range.head.line).text.length;
+          if (range.head.ch == len && range.head.line < cm.lastLine())
+            return {from: range.head, to: Pos(range.head.line + 1, 0)};
+          else
+            return {from: range.head, to: Pos(range.head.line, len)};
+        } else {
+          return {from: range.from(), to: range.to()};
+        }
+      });
+    },
+    deleteLine: function(cm) {
+      deleteNearSelection(cm, function(range) {
+        return {from: Pos(range.from().line, 0),
+                to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
+      });
+    },
+    delLineLeft: function(cm) {
+      deleteNearSelection(cm, function(range) {
+        return {from: Pos(range.from().line, 0), to: range.from()};
+      });
+    },
+    undo: function(cm) {cm.undo();},
+    redo: function(cm) {cm.redo();},
+    undoSelection: function(cm) {cm.undoSelection();},
+    redoSelection: function(cm) {cm.redoSelection();},
+    goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
+    goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
+    goLineStart: function(cm) {
+      cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); }, sel_move);
+    },
+    goLineStartSmart: function(cm) {
+      cm.extendSelectionsBy(function(range) {
+        var start = lineStart(cm, range.head.line);
+        var line = cm.getLineHandle(start.line);
+        var order = getOrder(line);
+        if (!order || order[0].level == 0) {
+          var firstNonWS = Math.max(0, line.text.search(/\S/));
+          var inWS = range.head.line == start.line && range.head.ch <= firstNonWS && range.head.ch;
+          return Pos(start.line, inWS ? 0 : firstNonWS);
+        }
+        return start;
+      }, sel_move);
+    },
+    goLineEnd: function(cm) {
+      cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); }, sel_move);
+    },
+    goLineRight: function(cm) {
+      cm.extendSelectionsBy(function(range) {
+        var top = cm.charCoords(range.head, "div").top + 5;
+        return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
+      }, sel_move);
+    },
+    goLineLeft: function(cm) {
+      cm.extendSelectionsBy(function(range) {
+        var top = cm.charCoords(range.head, "div").top + 5;
+        return cm.coordsChar({left: 0, top: top}, "div");
+      }, sel_move);
+    },
+    goLineUp: function(cm) {cm.moveV(-1, "line");},
+    goLineDown: function(cm) {cm.moveV(1, "line");},
+    goPageUp: function(cm) {cm.moveV(-1, "page");},
+    goPageDown: function(cm) {cm.moveV(1, "page");},
+    goCharLeft: function(cm) {cm.moveH(-1, "char");},
+    goCharRight: function(cm) {cm.moveH(1, "char");},
+    goColumnLeft: function(cm) {cm.moveH(-1, "column");},
+    goColumnRight: function(cm) {cm.moveH(1, "column");},
+    goWordLeft: function(cm) {cm.moveH(-1, "word");},
+    goGroupRight: function(cm) {cm.moveH(1, "group");},
+    goGroupLeft: function(cm) {cm.moveH(-1, "group");},
+    goWordRight: function(cm) {cm.moveH(1, "word");},
+    delCharBefore: function(cm) {cm.deleteH(-1, "char");},
+    delCharAfter: function(cm) {cm.deleteH(1, "char");},
+    delWordBefore: function(cm) {cm.deleteH(-1, "word");},
+    delWordAfter: function(cm) {cm.deleteH(1, "word");},
+    delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
+    delGroupAfter: function(cm) {cm.deleteH(1, "group");},
+    indentAuto: function(cm) {cm.indentSelection("smart");},
+    indentMore: function(cm) {cm.indentSelection("add");},
+    indentLess: function(cm) {cm.indentSelection("subtract");},
+    insertTab: function(cm) {cm.replaceSelection("\t");},
+    insertSoftTab: function(cm) {
+      var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize;
+      for (var i = 0; i < ranges.length; i++) {
+        var pos = ranges[i].from();
+        var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize);
+        spaces.push(new Array(tabSize - col % tabSize + 1).join(" "));
+      }
+      cm.replaceSelections(spaces);
+    },
+    defaultTab: function(cm) {
+      if (cm.somethingSelected()) cm.indentSelection("add");
+      else cm.execCommand("insertTab");
+    },
+    transposeChars: function(cm) {
+      runInOp(cm, function() {
+        var ranges = cm.listSelections();
+        for (var i = 0; i < ranges.length; i++) {
+          var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
+          if (cur.ch > 0 && cur.ch < line.length - 1)
+            cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
+                            Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
+        }
+      });
+    },
+    newlineAndIndent: function(cm) {
+      runInOp(cm, function() {
+        var len = cm.listSelections().length;
+        for (var i = 0; i < len; i++) {
+          var range = cm.listSelections()[i];
+          cm.replaceRange("\n", range.anchor, range.head, "+input");
+          cm.indentLine(range.from().line + 1, null, true);
+          ensureCursorVisible(cm);
+        }
+      });
+    },
+    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
+  };
+
+  // STANDARD KEYMAPS
+
+  var keyMap = CodeMirror.keyMap = {};
+  keyMap.basic = {
+    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
+    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
+    "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
+    "Tab": "defaultTab", "Shift-Tab": "indentAuto",
+    "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
+    "Esc": "singleSelection"
+  };
+  // Note that the save and find-related commands aren't defined by
+  // default. User code or addons can define them. Unknown commands
+  // are simply ignored.
+  keyMap.pcDefault = {
+    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
+    "Ctrl-Home": "goDocStart", "Ctrl-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
+    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
+    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
+    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
+    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
+    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
+    fallthrough: "basic"
+  };
+  keyMap.macDefault = {
+    "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
+    "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
+    "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore",
+    "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
+    "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
+    "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft",
+    "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection",
+    fallthrough: ["basic", "emacsy"]
+  };
+  // Very basic readline/emacs-style bindings, which are standard on Mac.
+  keyMap.emacsy = {
+    "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
+    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
+    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
+  };
+  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
+
+  // KEYMAP DISPATCH
+
+  function getKeyMap(val) {
+    if (typeof val == "string") return keyMap[val];
+    else return val;
+  }
+
+  // Given an array of keymaps and a key name, call handle on any
+  // bindings found, until that returns a truthy value, at which point
+  // we consider the key handled. Implements things like binding a key
+  // to false stopping further handling and keymap fallthrough.
+  var lookupKey = CodeMirror.lookupKey = function(name, maps, handle) {
+    function lookup(map) {
+      map = getKeyMap(map);
+      var found = map[name];
+      if (found === false) return "stop";
+      if (found != null && handle(found)) return true;
+      if (map.nofallthrough) return "stop";
+
+      var fallthrough = map.fallthrough;
+      if (fallthrough == null) return false;
+      if (Object.prototype.toString.call(fallthrough) != "[object Array]")
+        return lookup(fallthrough);
+      for (var i = 0; i < fallthrough.length; ++i) {
+        var done = lookup(fallthrough[i]);
+        if (done) return done;
+      }
+      return false;
+    }
+
+    for (var i = 0; i < maps.length; ++i) {
+      var done = lookup(maps[i]);
+      if (done) return done != "stop";
+    }
+  };
+
+  // Modifier key presses don't count as 'real' key presses for the
+  // purpose of keymap fallthrough.
+  var isModifierKey = CodeMirror.isModifierKey = function(event) {
+    var name = keyNames[event.keyCode];
+    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
+  };
+
+  // Look up the name of a key as indicated by an event object.
+  var keyName = CodeMirror.keyName = function(event, noShift) {
+    if (presto && event.keyCode == 34 && event["char"]) return false;
+    var name = keyNames[event.keyCode];
+    if (name == null || event.altGraphKey) return false;
+    if (event.altKey) name = "Alt-" + name;
+    if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name;
+    if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
+    if (!noShift && event.shiftKey) name = "Shift-" + name;
+    return name;
+  };
+
+  // FROMTEXTAREA
+
+  CodeMirror.fromTextArea = function(textarea, options) {
+    if (!options) options = {};
+    options.value = textarea.value;
+    if (!options.tabindex && textarea.tabindex)
+      options.tabindex = textarea.tabindex;
+    if (!options.placeholder && textarea.placeholder)
+      options.placeholder = textarea.placeholder;
+    // Set autofocus to true if this textarea is focused, or if it has
+    // autofocus and no other element is focused.
+    if (options.autofocus == null) {
+      var hasFocus = activeElt();
+      options.autofocus = hasFocus == textarea ||
+        textarea.getAttribute("autofocus") != null && hasFocus == document.body;
+    }
+
+    function save() {textarea.value = cm.getValue();}
+    if (textarea.form) {
+      on(textarea.form, "submit", save);
+      // Deplorable hack to make the submit method do the right thing.
+      if (!options.leaveSubmitMethodAlone) {
+        var form = textarea.form, realSubmit = form.submit;
+        try {
+          var wrappedSubmit = form.submit = function() {
+            save();
+            form.submit = realSubmit;
+            form.submit();
+            form.submit = wrappedSubmit;
+          };
+        } catch(e) {}
+      }
+    }
+
+    textarea.style.display = "none";
+    var cm = CodeMirror(function(node) {
+      textarea.parentNode.insertBefore(node, textarea.nextSibling);
+    }, options);
+    cm.save = save;
+    cm.getTextArea = function() { return textarea; };
+    cm.toTextArea = function() {
+      save();
+      textarea.parentNode.removeChild(cm.getWrapperElement());
+      textarea.style.display = "";
+      if (textarea.form) {
+        off(textarea.form, "submit", save);
+        if (typeof textarea.form.submit == "function")
+          textarea.form.submit = realSubmit;
+      }
+    };
+    return cm;
+  };
+
+  // STRING STREAM
+
+  // Fed to the mode parsers, provides helper functions to make
+  // parsers more succinct.
+
+  var StringStream = CodeMirror.StringStream = function(string, tabSize) {
+    this.pos = this.start = 0;
+    this.string = string;
+    this.tabSize = tabSize || 8;
+    this.lastColumnPos = this.lastColumnValue = 0;
+    this.lineStart = 0;
+  };
+
+  StringStream.prototype = {
+    eol: function() {return this.pos >= this.string.length;},
+    sol: function() {return this.pos == this.lineStart;},
+    peek: function() {return this.string.charAt(this.pos) || undefined;},
+    next: function() {
+      if (this.pos < this.string.length)
+        return this.string.charAt(this.pos++);
+    },
+    eat: function(match) {
+      var ch = this.string.charAt(this.pos);
+      if (typeof match == "string") var ok = ch == match;
+      else var ok = ch && (match.test ? match.test(ch) : match(ch));
+      if (ok) {++this.pos; return ch;}
+    },
+    eatWhile: function(match) {
+      var start = this.pos;
+      while (this.eat(match)){}
+      return this.pos > start;
+    },
+    eatSpace: function() {
+      var start = this.pos;
+      while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
+      return this.pos > start;
+    },
+    skipToEnd: function() {this.pos = this.string.length;},
+    skipTo: function(ch) {
+      var found = this.string.indexOf(ch, this.pos);
+      if (found > -1) {this.pos = found; return true;}
+    },
+    backUp: function(n) {this.pos -= n;},
+    column: function() {
+      if (this.lastColumnPos < this.start) {
+        this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
+        this.lastColumnPos = this.start;
+      }
+      return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
+    },
+    indentation: function() {
+      return countColumn(this.string, null, this.tabSize) -
+        (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
+    },
+    match: function(pattern, consume, caseInsensitive) {
+      if (typeof pattern == "string") {
+        var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
+        var substr = this.string.substr(this.pos, pattern.length);
+        if (cased(substr) == cased(pattern)) {
+          if (consume !== false) this.pos += pattern.length;
+          return true;
+        }
+      } else {
+        var match = this.string.slice(this.pos).match(pattern);
+        if (match && match.index > 0) return null;
+        if (match && consume !== false) this.pos += match[0].length;
+        return match;
+      }
+    },
+    current: function(){return this.string.slice(this.start, this.pos);},
+    hideFirstChars: function(n, inner) {
+      this.lineStart += n;
+      try { return inner(); }
+      finally { this.lineStart -= n; }
+    }
+  };
+
+  // TEXTMARKERS
+
+  // Created with markText and setBookmark methods. A TextMarker is a
+  // handle that can be used to clear or find a marked position in the
+  // document. Line objects hold arrays (markedSpans) containing
+  // {from, to, marker} object pointing to such marker objects, and
+  // indicating that such a marker is present on that line. Multiple
+  // lines may point to the same marker when it spans across lines.
+  // The spans will have null for their from/to properties when the
+  // marker continues beyond the start/end of the line. Markers have
+  // links back to the lines they currently touch.
+
+  var TextMarker = CodeMirror.TextMarker = function(doc, type) {
+    this.lines = [];
+    this.type = type;
+    this.doc = doc;
+  };
+  eventMixin(TextMarker);
+
+  // Clear the marker.
+  TextMarker.prototype.clear = function() {
+    if (this.explicitlyCleared) return;
+    var cm = this.doc.cm, withOp = cm && !cm.curOp;
+    if (withOp) startOperation(cm);
+    if (hasHandler(this, "clear")) {
+      var found = this.find();
+      if (found) signalLater(this, "clear", found.from, found.to);
+    }
+    var min = null, max = null;
+    for (var i = 0; i < this.lines.length; ++i) {
+      var line = this.lines[i];
+      var span = getMarkedSpanFor(line.markedSpans, this);
+      if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
+      else if (cm) {
+        if (span.to != null) max = lineNo(line);
+        if (span.from != null) min = lineNo(line);
+      }
+      line.markedSpans = removeMarkedSpan(line.markedSpans, span);
+      if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
+        updateLineHeight(line, textHeight(cm.display));
+    }
+    if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
+      var visual = visualLine(this.lines[i]), len = lineLength(visual);
+      if (len > cm.display.maxLineLength) {
+        cm.display.maxLine = visual;
+        cm.display.maxLineLength = len;
+        cm.display.maxLineChanged = true;
+      }
+    }
+
+    if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);
+    this.lines.length = 0;
+    this.explicitlyCleared = true;
+    if (this.atomic && this.doc.cantEdit) {
+      this.doc.cantEdit = false;
+      if (cm) reCheckSelection(cm.doc);
+    }
+    if (cm) signalLater(cm, "markerCleared", cm, this);
+    if (withOp) endOperation(cm);
+    if (this.parent) this.parent.clear();
+  };
+
+  // Find the position of the marker in the document. Returns a {from,
+  // to} object by default. Side can be passed to get a specific side
+  // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
+  // Pos objects returned contain a line object, rather than a line
+  // number (used to prevent looking up the same line twice).
+  TextMarker.prototype.find = function(side, lineObj) {
+    if (side == null && this.type == "bookmark") side = 1;
+    var from, to;
+    for (var i = 0; i < this.lines.length; ++i) {
+      var line = this.lines[i];
+      var span = getMarkedSpanFor(line.markedSpans, this);
+      if (span.from != null) {
+        from = Pos(lineObj ? line : lineNo(line), span.from);
+        if (side == -1) return from;
+      }
+      if (span.to != null) {
+        to = Pos(lineObj ? line : lineNo(line), span.to);
+        if (side == 1) return to;
+      }
+    }
+    return from && {from: from, to: to};
+  };
+
+  // Signals that the marker's widget changed, and surrounding layout
+  // should be recomputed.
+  TextMarker.prototype.changed = function() {
+    var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
+    if (!pos || !cm) return;
+    runInOp(cm, function() {
+      var line = pos.line, lineN = lineNo(pos.line);
+      var view = findViewForLine(cm, lineN);
+      if (view) {
+        clearLineMeasurementCacheFor(view);
+        cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
+      }
+      cm.curOp.updateMaxLine = true;
+      if (!lineIsHidden(widget.doc, line) && widget.height != null) {
+        var oldHeight = widget.height;
+        widget.height = null;
+        var dHeight = widgetHeight(widget) - oldHeight;
+        if (dHeight)
+          updateLineHeight(line, line.height + dHeight);
+      }
+    });
+  };
+
+  TextMarker.prototype.attachLine = function(line) {
+    if (!this.lines.length && this.doc.cm) {
+      var op = this.doc.cm.curOp;
+      if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
+        (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
+    }
+    this.lines.push(line);
+  };
+  TextMarker.prototype.detachLine = function(line) {
+    this.lines.splice(indexOf(this.lines, line), 1);
+    if (!this.lines.length && this.doc.cm) {
+      var op = this.doc.cm.curOp;
+      (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
+    }
+  };
+
+  // Collapsed markers have unique ids, in order to be able to order
+  // them, which is needed for uniquely determining an outer marker
+  // when they overlap (they may nest, but not partially overlap).
+  var nextMarkerId = 0;
+
+  // Create a marker, wire it up to the right lines, and
+  function markText(doc, from, to, options, type) {
+    // Shared markers (across linked documents) are handled separately
+    // (markTextShared will call out to this again, once per
+    // document).
+    if (options && options.shared) return markTextShared(doc, from, to, options, type);
+    // Ensure we are in an operation.
+    if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
+
+    var marker = new TextMarker(doc, type), diff = cmp(from, to);
+    if (options) copyObj(options, marker, false);
+    // Don't connect empty markers unless clearWhenEmpty is false
+    if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
+      return marker;
+    if (marker.replacedWith) {
+      // Showing up as a widget implies collapsed (widget replaces text)
+      marker.collapsed = true;
+      marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
+      if (!options.handleMouseEvents) marker.widgetNode.ignoreEvents = true;
+      if (options.insertLeft) marker.widgetNode.insertLeft = true;
+    }
+    if (marker.collapsed) {
+      if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
+          from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
+        throw new Error("Inserting collapsed marker partially overlapping an existing one");
+      sawCollapsedSpans = true;
+    }
+
+    if (marker.addToHistory)
+      addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);
+
+    var curLine = from.line, cm = doc.cm, updateMaxLine;
+    doc.iter(curLine, to.line + 1, function(line) {
+      if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
+        updateMaxLine = true;
+      if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
+      addMarkedSpan(line, new MarkedSpan(marker,
+                                         curLine == from.line ? from.ch : null,
+                                         curLine == to.line ? to.ch : null));
+      ++curLine;
+    });
+    // lineIsHidden depends on the presence of the spans, so needs a second pass
+    if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
+      if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
+    });
+
+    if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });
+
+    if (marker.readOnly) {
+      sawReadOnlySpans = true;
+      if (doc.history.done.length || doc.history.undone.length)
+        doc.clearHistory();
+    }
+    if (marker.collapsed) {
+      marker.id = ++nextMarkerId;
+      marker.atomic = true;
+    }
+    if (cm) {
+      // Sync editor state
+      if (updateMaxLine) cm.curOp.updateMaxLine = true;
+      if (marker.collapsed)
+        regChange(cm, from.line, to.line + 1);
+      else if (marker.className || marker.title || marker.startStyle || marker.endStyle)
+        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
+      if (marker.atomic) reCheckSelection(cm.doc);
+      signalLater(cm, "markerAdded", cm, marker);
+    }
+    return marker;
+  }
+
+  // SHARED TEXTMARKERS
+
+  // A shared marker spans multiple linked documents. It is
+  // implemented as a meta-marker-object controlling multiple normal
+  // markers.
+  var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
+    this.markers = markers;
+    this.primary = primary;
+    for (var i = 0; i < markers.length; ++i)
+      markers[i].parent = this;
+  };
+  eventMixin(SharedTextMarker);
+
+  SharedTextMarker.prototype.clear = function() {
+    if (this.explicitlyCleared) return;
+    this.explicitlyCleared = true;
+    for (var i = 0; i < this.markers.length; ++i)
+      this.markers[i].clear();
+    signalLater(this, "clear");
+  };
+  SharedTextMarker.prototype.find = function(side, lineObj) {
+    return this.primary.find(side, lineObj);
+  };
+
+  function markTextShared(doc, from, to, options, type) {
+    options = copyObj(options);
+    options.shared = false;
+    var markers = [markText(doc, from, to, options, type)], primary = markers[0];
+    var widget = options.widgetNode;
+    linkedDocs(doc, function(doc) {
+      if (widget) options.widgetNode = widget.cloneNode(true);
+      markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
+      for (var i = 0; i < doc.linked.length; ++i)
+        if (doc.linked[i].isParent) return;
+      primary = lst(markers);
+    });
+    return new SharedTextMarker(markers, primary);
+  }
+
+  function findSharedMarkers(doc) {
+    return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())),
+                         function(m) { return m.parent; });
+  }
+
+  function copySharedMarkers(doc, markers) {
+    for (var i = 0; i < markers.length; i++) {
+      var marker = markers[i], pos = marker.find();
+      var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to);
+      if (cmp(mFrom, mTo)) {
+        var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type);
+        marker.markers.push(subMark);
+        subMark.parent = marker;
+      }
+    }
+  }
+
+  function detachSharedMarkers(markers) {
+    for (var i = 0; i < markers.length; i++) {
+      var marker = markers[i], linked = [marker.primary.doc];;
+      linkedDocs(marker.primary.doc, function(d) { linked.push(d); });
+      for (var j = 0; j < marker.markers.length; j++) {
+        var subMarker = marker.markers[j];
+        if (indexOf(linked, subMarker.doc) == -1) {
+          subMarker.parent = null;
+          marker.markers.splice(j--, 1);
+        }
+      }
+    }
+  }
+
+  // TEXTMARKER SPANS
+
+  function MarkedSpan(marker, from, to) {
+    this.marker = marker;
+    this.from = from; this.to = to;
+  }
+
+  // Search an array of spans for a span matching the given marker.
+  function getMarkedSpanFor(spans, marker) {
+    if (spans) for (var i = 0; i < spans.length; ++i) {
+      var span = spans[i];
+      if (span.marker == marker) return span;
+    }
+  }
+  // Remove a span from an array, returning undefined if no spans are
+  // left (we don't store arrays for lines without spans).
+  function removeMarkedSpan(spans, span) {
+    for (var r, i = 0; i < spans.length; ++i)
+      if (spans[i] != span) (r || (r = [])).push(spans[i]);
+    return r;
+  }
+  // Add a span to a line.
+  function addMarkedSpan(line, span) {
+    line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
+    span.marker.attachLine(line);
+  }
+
+  // Used for the algorithm that adjusts markers for a change in the
+  // document. These functions cut an array of spans at a given
+  // character position, returning an array of remaining chunks (or
+  // undefined if nothing remains).
+  function markedSpansBefore(old, startCh, isInsert) {
+    if (old) for (var i = 0, nw; i < old.length; ++i) {
+      var span = old[i], marker = span.marker;
+      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
+      if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
+        var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
+        (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
+      }
+    }
+    return nw;
+  }
+  function markedSpansAfter(old, endCh, isInsert) {
+    if (old) for (var i = 0, nw; i < old.length; ++i) {
+      var span = old[i], marker = span.marker;
+      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
+      if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
+        var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
+        (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
+                                              span.to == null ? null : span.to - endCh));
+      }
+    }
+    return nw;
+  }
+
+  // Given a change object, compute the new set of marker spans that
+  // cover the line in which the change took place. Removes spans
+  // entirely within the change, reconnects spans belonging to the
+  // same marker that appear on both sides of the change, and cuts off
+  // spans partially within the change. Returns an array of span
+  // arrays with one element for each line in (after) the change.
+  function stretchSpansOverChange(doc, change) {
+    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
+    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
+    if (!oldFirst && !oldLast) return null;
+
+    var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
+    // Get the spans that 'stick out' on both sides
+    var first = markedSpansBefore(oldFirst, startCh, isInsert);
+    var last = markedSpansAfter(oldLast, endCh, isInsert);
+
+    // Next, merge those two ends
+    var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
+    if (first) {
+      // Fix up .to properties of first
+      for (var i = 0; i < first.length; ++i) {
+        var span = first[i];
+        if (span.to == null) {
+          var found = getMarkedSpanFor(last, span.marker);
+          if (!found) span.to = startCh;
+          else if (sameLine) span.to = found.to == null ? null : found.to + offset;
+        }
+      }
+    }
+    if (last) {
+      // Fix up .from in last (or move them into first in case of sameLine)
+      for (var i = 0; i < last.length; ++i) {
+        var span = last[i];
+        if (span.to != null) span.to += offset;
+        if (span.from == null) {
+          var found = getMarkedSpanFor(first, span.marker);
+          if (!found) {
+            span.from = offset;
+            if (sameLine) (first || (first = [])).push(span);
+          }
+        } else {
+          span.from += offset;
+          if (sameLine) (first || (first = [])).push(span);
+        }
+      }
+    }
+    // Make sure we didn't create any zero-length spans
+    if (first) first = clearEmptySpans(first);
+    if (last && last != first) last = clearEmptySpans(last);
+
+    var newMarkers = [first];
+    if (!sameLine) {
+      // Fill gap with whole-line-spans
+      var gap = change.text.length - 2, gapMarkers;
+      if (gap > 0 && first)
+        for (var i = 0; i < first.length; ++i)
+          if (first[i].to == null)
+            (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));
+      for (var i = 0; i < gap; ++i)
+        newMarkers.push(gapMarkers);
+      newMarkers.push(last);
+    }
+    return newMarkers;
+  }
+
+  // Remove spans that are empty and don't have a clearWhenEmpty
+  // option of false.
+  function clearEmptySpans(spans) {
+    for (var i = 0; i < spans.length; ++i) {
+      var span = spans[i];
+      if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
+        spans.splice(i--, 1);
+    }
+    if (!spans.length) return null;
+    return spans;
+  }
+
+  // Used for un/re-doing changes from the history. Combines the
+  // result of computing the existing spans with the set of spans that
+  // existed in the history (so that deleting around a span and then
+  // undoing brings back the span).
+  function mergeOldSpans(doc, change) {
+    var old = getOldSpans(doc, change);
+    var stretched = stretchSpansOverChange(doc, change);
+    if (!old) return stretched;
+    if (!stretched) return old;
+
+    for (var i = 0; i < old.length; ++i) {
+      var oldCur = old[i], stretchCur = stretched[i];
+      if (oldCur && stretchCur) {
+        spans: for (var j = 0; j < stretchCur.length; ++j) {
+          var span = stretchCur[j];
+          for (var k = 0; k < oldCur.length; ++k)
+            if (oldCur[k].marker == span.marker) continue spans;
+          oldCur.push(span);
+        }
+      } else if (stretchCur) {
+        old[i] = stretchCur;
+      }
+    }
+    return old;
+  }
+
+  // Used to 'clip' out readOnly ranges when making a change.
+  function removeReadOnlyRanges(doc, from, to) {
+    var markers = null;
+    doc.iter(from.line, to.line + 1, function(line) {
+      if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
+        var mark = line.markedSpans[i].marker;
+        if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
+          (markers || (markers = [])).push(mark);
+      }
+    });
+    if (!markers) return null;
+    var parts = [{from: from, to: to}];
+    for (var i = 0; i < markers.length; ++i) {
+      var mk = markers[i], m = mk.find(0);
+      for (var j = 0; j < parts.length; ++j) {
+        var p = parts[j];
+        if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;
+        var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
+        if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
+          newParts.push({from: p.from, to: m.from});
+        if (dto > 0 || !mk.inclusiveRight && !dto)
+          newParts.push({from: m.to, to: p.to});
+        parts.splice.apply(parts, newParts);
+        j += newParts.length - 1;
+      }
+    }
+    return parts;
+  }
+
+  // Connect or disconnect spans from a line.
+  function detachMarkedSpans(line) {
+    var spans = line.markedSpans;
+    if (!spans) return;
+    for (var i = 0; i < spans.length; ++i)
+      spans[i].marker.detachLine(line);
+    line.markedSpans = null;
+  }
+  function attachMarkedSpans(line, spans) {
+    if (!spans) return;
+    for (var i = 0; i < spans.length; ++i)
+      spans[i].marker.attachLine(line);
+    line.markedSpans = spans;
+  }
+
+  // Helpers used when computing which overlapping collapsed span
+  // counts as the larger one.
+  function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
+  function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }
+
+  // Returns a number indicating which of two overlapping collapsed
+  // spans is larger (and thus includes the other). Falls back to
+  // comparing ids when the spans cover exactly the same range.
+  function compareCollapsedMarkers(a, b) {
+    var lenDiff = a.lines.length - b.lines.length;
+    if (lenDiff != 0) return lenDiff;
+    var aPos = a.find(), bPos = b.find();
+    var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
+    if (fromCmp) return -fromCmp;
+    var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
+    if (toCmp) return toCmp;
+    return b.id - a.id;
+  }
+
+  // Find out whether a line ends or starts in a collapsed span. If
+  // so, return the marker for that span.
+  function collapsedSpanAtSide(line, start) {
+    var sps = sawCollapsedSpans && line.markedSpans, found;
+    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
+      sp = sps[i];
+      if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
+          (!found || compareCollapsedMarkers(found, sp.marker) < 0))
+        found = sp.marker;
+    }
+    return found;
+  }
+  function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
+  function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }
+
+  // Test whether there exists a collapsed span that partially
+  // overlaps (covers the start or end, but not both) of a new span.
+  // Such overlap is not allowed.
+  function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
+    var line = getLine(doc, lineNo);
+    var sps = sawCollapsedSpans && line.markedSpans;
+    if (sps) for (var i = 0; i < sps.length; ++i) {
+      var sp = sps[i];
+      if (!sp.marker.collapsed) continue;
+      var found = sp.marker.find(0);
+      var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
+      var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
+      if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
+      if (fromCmp <= 0 && (cmp(found.to, from) || extraRight(sp.marker) - extraLeft(marker)) > 0 ||
+          fromCmp >= 0 && (cmp(found.from, to) || extraLeft(sp.marker) - extraRight(marker)) < 0)
+        return true;
+    }
+  }
+
+  // A visual line is a line as drawn on the screen. Folding, for
+  // example, can cause multiple logical lines to appear on the same
+  // visual line. This finds the start of the visual line that the
+  // given line is part of (usually that is the line itself).
+  function visualLine(line) {
+    var merged;
+    while (merged = collapsedSpanAtStart(line))
+      line = merged.find(-1, true).line;
+    return line;
+  }
+
+  // Returns an array of logical lines that continue the visual line
+  // started by the argument, or undefined if there are no such lines.
+  function visualLineContinued(line) {
+    var merged, lines;
+    while (merged = collapsedSpanAtEnd(line)) {
+      line = merged.find(1, true).line;
+      (lines || (lines = [])).push(line);
+    }
+    return lines;
+  }
+
+  // Get the line number of the start of the visual line that the
+  // given line number is part of.
+  function visualLineNo(doc, lineN) {
+    var line = getLine(doc, lineN), vis = visualLine(line);
+    if (line == vis) return lineN;
+    return lineNo(vis);
+  }
+  // Get the line number of the start of the next visual line after
+  // the given line.
+  function visualLineEndNo(doc, lineN) {
+    if (lineN > doc.lastLine()) return lineN;
+    var line = getLine(doc, lineN), merged;
+    if (!lineIsHidden(doc, line)) return lineN;
+    while (merged = collapsedSpanAtEnd(line))
+      line = merged.find(1, true).line;
+    return lineNo(line) + 1;
+  }
+
+  // Compute whether a line is hidden. Lines count as hidden when they
+  // are part of a visual line that starts with another line, or when
+  // they are entirely covered by collapsed, non-widget span.
+  function lineIsHidden(doc, line) {
+    var sps = sawCollapsedSpans && line.markedSpans;
+    if (sps) for (var sp, i = 0; i < sps.length; ++i) {
+      sp = sps[i];
+      if (!sp.marker.collapsed) continue;
+      if (sp.from == null) return true;
+      if (sp.marker.widgetNode) continue;
+      if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
+        return true;
+    }
+  }
+  function lineIsHiddenInner(doc, line, span) {
+    if (span.to == null) {
+      var end = span.marker.find(1, true);
+      return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));
+    }
+    if (span.marker.inclusiveRight && span.to == line.text.length)
+      return true;
+    for (var sp, i = 0; i < line.markedSpans.length; ++i) {
+      sp = line.markedSpans[i];
+      if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
+          (sp.to == null || sp.to != span.from) &&
+          (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
+          lineIsHiddenInner(doc, line, sp)) return true;
+    }
+  }
+
+  // LINE WIDGETS
+
+  // Line widgets are block elements displayed above or below a line.
+
+  var LineWidget = CodeMirror.LineWidget = function(cm, node, options) {
+    if (options) for (var opt in options) if (options.hasOwnProperty(opt))
+      this[opt] = options[opt];
+    this.cm = cm;
+    this.node = node;
+  };
+  eventMixin(LineWidget);
+
+  function adjustScrollWhenAboveVisible(cm, line, diff) {
+    if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
+      addToScrollPos(cm, null, diff);
+  }
+
+  LineWidget.prototype.clear = function() {
+    var cm = this.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
+    if (no == null || !ws) return;
+    for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
+    if (!ws.length) line.widgets = null;
+    var height = widgetHeight(this);
+    runInOp(cm, function() {
+      adjustScrollWhenAboveVisible(cm, line, -height);
+      regLineChange(cm, no, "widget");
+      updateLineHeight(line, Math.max(0, line.height - height));
+    });
+  };
+  LineWidget.prototype.changed = function() {
+    var oldH = this.height, cm = this.cm, line = this.line;
+    this.height = null;
+    var diff = widgetHeight(this) - oldH;
+    if (!diff) return;
+    runInOp(cm, function() {
+      cm.curOp.forceUpdate = true;
+      adjustScrollWhenAboveVisible(cm, line, diff);
+      updateLineHeight(line, line.height + diff);
+    });
+  };
+
+  function widgetHeight(widget) {
+    if (widget.height != null) return widget.height;
+    if (!contains(document.body, widget.node))
+      removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
+    return widget.height = widget.node.offsetHeight;
+  }
+
+  function addLineWidget(cm, handle, node, options) {
+    var widget = new LineWidget(cm, node, options);
+    if (widget.noHScroll) cm.display.alignWidgets = true;
+    changeLine(cm, handle, "widget", function(line) {
+      var widgets = line.widgets || (line.widgets = []);
+      if (widget.insertAt == null) widgets.push(widget);
+      else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
+      widget.line = line;
+      if (!lineIsHidden(cm.doc, line)) {
+        var aboveVisible = heightAtLine(line) < cm.doc.scrollTop;
+        updateLineHeight(line, line.height + widgetHeight(widget));
+        if (aboveVisible) addToScrollPos(cm, null, widget.height);
+        cm.curOp.forceUpdate = true;
+      }
+      return true;
+    });
+    return widget;
+  }
+
+  // LINE DATA STRUCTURE
+
+  // Line objects. These hold state related to a line, including
+  // highlighting info (the styles array).
+  var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
+    this.text = text;
+    attachMarkedSpans(this, markedSpans);
+    this.height = estimateHeight ? estimateHeight(this) : 1;
+  };
+  eventMixin(Line);
+  Line.prototype.lineNo = function() { return lineNo(this); };
+
+  // Change the content (text, markers) of a line. Automatically
+  // invalidates cached information and tries to re-estimate the
+  // line's height.
+  function updateLine(line, text, markedSpans, estimateHeight) {
+    line.text = text;
+    if (line.stateAfter) line.stateAfter = null;
+    if (line.styles) line.styles = null;
+    if (line.order != null) line.order = null;
+    detachMarkedSpans(line);
+    attachMarkedSpans(line, markedSpans);
+    var estHeight = estimateHeight ? estimateHeight(line) : 1;
+    if (estHeight != line.height) updateLineHeight(line, estHeight);
+  }
+
+  // Detach a line from the document tree and its markers.
+  function cleanUpLine(line) {
+    line.parent = null;
+    detachMarkedSpans(line);
+  }
+
+  function extractLineClasses(type, output) {
+    if (type) for (;;) {
+      var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/);
+      if (!lineClass) break;
+      type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length);
+      var prop = lineClass[1] ? "bgClass" : "textClass";
+      if (output[prop] == null)
+        output[prop] = lineClass[2];
+      else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
+        output[prop] += " " + lineClass[2];
+    }
+    return type;
+  }
+
+  function callBlankLine(mode, state) {
+    if (mode.blankLine) return mode.blankLine(state);
+    if (!mode.innerMode) return;
+    var inner = CodeMirror.innerMode(mode, state);
+    if (inner.mode.blankLine) return inner.mode.blankLine(inner.state);
+  }
+
+  function readToken(mode, stream, state) {
+    var style = mode.token(stream, state);
+    if (stream.pos <= stream.start)
+      throw new Error("Mode " + mode.name + " failed to advance stream.");
+    return style;
+  }
+
+  // Run the given mode's parser over a line, calling f for each token.
+  function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) {
+    var flattenSpans = mode.flattenSpans;
+    if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
+    var curStart = 0, curStyle = null;
+    var stream = new StringStream(text, cm.options.tabSize), style;
+    if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses);
+    while (!stream.eol()) {
+      if (stream.pos > cm.options.maxHighlightLength) {
+        flattenSpans = false;
+        if (forceToEnd) processLine(cm, text, state, stream.pos);
+        stream.pos = text.length;
+        style = null;
+      } else {
+        style = extractLineClasses(readToken(mode, stream, state), lineClasses);
+      }
+      if (cm.options.addModeClass) {
+        var mName = CodeMirror.innerMode(mode, state).mode.name;
+        if (mName) style = "m-" + (style ? mName + " " + style : mName);
+      }
+      if (!flattenSpans || curStyle != style) {
+        if (curStart < stream.start) f(stream.start, curStyle);
+        curStart = stream.start; curStyle = style;
+      }
+      stream.start = stream.pos;
+    }
+    while (curStart < stream.pos) {
+      // Webkit seems to refuse to render text nodes longer than 57444 characters
+      var pos = Math.min(stream.pos, curStart + 50000);
+      f(pos, curStyle);
+      curStart = pos;
+    }
+  }
+
+  // Compute a style array (an array starting with a mode generation
+  // -- for invalidation -- followed by pairs of end positions and
+  // style strings), which is used to highlight the tokens on the
+  // line.
+  function highlightLine(cm, line, state, forceToEnd) {
+    // A styles array always starts with a number identifying the
+    // mode/overlays that it is based on (for easy invalidation).
+    var st = [cm.state.modeGen], lineClasses = {};
+    // Compute the base array of styles
+    runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
+      st.push(end, style);
+    }, lineClasses, forceToEnd);
+
+    // Run overlays, adjust style array.
+    for (var o = 0; o < cm.state.overlays.length; ++o) {
+      var overlay = cm.state.overlays[o], i = 1, at = 0;
+      runMode(cm, line.text, overlay.mode, true, function(end, style) {
+        var start = i;
+        // Ensure there's a token end at the current position, and that i points at it
+        while (at < end) {
+          var i_end = st[i];
+          if (i_end > end)
+            st.splice(i, 1, end, st[i+1], i_end);
+          i += 2;
+          at = Math.min(end, i_end);
+        }
+        if (!style) return;
+        if (overlay.opaque) {
+          st.splice(start, i - start, end, "cm-overlay " + style);
+          i = start + 2;
+        } else {
+          for (; start < i; start += 2) {
+            var cur = st[start+1];
+            st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style;
+          }
+        }
+      }, lineClasses);
+    }
+
+    return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null};
+  }
+
+  function getLineStyles(cm, line) {
+    if (!line.styles || line.styles[0] != cm.state.modeGen) {
+      var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
+      line.styles = result.styles;
+      if (result.classes) line.styleClasses = result.classes;
+      else if (line.styleClasses) line.styleClasses = null;
+    }
+    return line.styles;
+  }
+
+  // Lightweight form of highlight -- proceed over this line and
+  // update state, but don't save a style array. Used for lines that
+  // aren't currently visible.
+  function processLine(cm, text, state, startAt) {
+    var mode = cm.doc.mode;
+    var stream = new StringStream(text, cm.options.tabSize);
+    stream.start = stream.pos = startAt || 0;
+    if (text == "") callBlankLine(mode, state);
+    while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
+      readToken(mode, stream, state);
+      stream.start = stream.pos;
+    }
+  }
+
+  // Convert a style as returned by a mode (either null, or a string
+  // containing one or more styles) to a CSS style. This is cached,
+  // and also looks for line-wide styles.
+  var styleToClassCache = {}, styleToClassCacheWithMode = {};
+  function interpretTokenStyle(style, options) {
+    if (!style || /^\s*$/.test(style)) return null;
+    var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
+    return cache[style] ||
+      (cache[style] = style.replace(/\S+/g, "cm-$&"));
+  }
+
+  // Render the DOM representation of the text of a line. Also builds
+  // up a 'line map', which points at the DOM nodes that represent
+  // specific stretches of text, and is used by the measuring code.
+  // The returned object contains the DOM node, this map, and
+  // information about line-wide styles that were set by the mode.
+  function buildLineContent(cm, lineView) {
+    // The padding-right forces the element to have a 'border', which
+    // is needed on Webkit to be able to get line-level bounding
+    // rectangles for it (in measureChar).
+    var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
+    var builder = {pre: elt("pre", [content]), content: content, col: 0, pos: 0, cm: cm};
+    lineView.measure = {};
+
+    // Iterate over the logical lines that make up this visual line.
+    for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
+      var line = i ? lineView.rest[i - 1] : lineView.line, order;
+      builder.pos = 0;
+      builder.addToken = buildToken;
+      // Optionally wire in some hacks into the token-rendering
+      // algorithm, to deal with browser quirks.
+      if ((ie || webkit) && cm.getOption("lineWrapping"))
+        builder.addToken = buildTokenSplitSpaces(builder.addToken);
+      if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
+        builder.addToken = buildTokenBadBidi(builder.addToken, order);
+      builder.map = [];
+      insertLineContent(line, builder, getLineStyles(cm, line));
+      if (line.styleClasses) {
+        if (line.styleClasses.bgClass)
+          builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "");
+        if (line.styleClasses.textClass)
+          builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "");
+      }
+
+      // Ensure at least a single node is present, for measuring.
+      if (builder.map.length == 0)
+        builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));
+
+      // Store the map and a cache object for the current logical line
+      if (i == 0) {
+        lineView.measure.map = builder.map;
+        lineView.measure.cache = {};
+      } else {
+        (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
+        (lineView.measure.caches || (lineView.measure.caches = [])).push({});
+      }
+    }
+
+    signal(cm, "renderLine", cm, lineView.line, builder.pre);
+    return builder;
+  }
+
+  function defaultSpecialCharPlaceholder(ch) {
+    var token = elt("span", "\u2022", "cm-invalidchar");
+    token.title = "\\u" + ch.charCodeAt(0).toString(16);
+    return token;
+  }
+
+  // Build up the DOM representation for a single token, and add it to
+  // the line map. Takes care to render special characters separately.
+  function buildToken(builder, text, style, startStyle, endStyle, title) {
+    if (!text) return;
+    var special = builder.cm.options.specialChars, mustWrap = false;
+    if (!special.test(text)) {
+      builder.col += text.length;
+      var content = document.createTextNode(text);
+      builder.map.push(builder.pos, builder.pos + text.length, content);
+      if (ie_upto8) mustWrap = true;
+      builder.pos += text.length;
+    } else {
+      var content = document.createDocumentFragment(), pos = 0;
+      while (true) {
+        special.lastIndex = pos;
+        var m = special.exec(text);
+        var skipped = m ? m.index - pos : text.length - pos;
+        if (skipped) {
+          var txt = document.createTextNode(text.slice(pos, pos + skipped));
+          if (ie_upto8) content.appendChild(elt("span", [txt]));
+          else content.appendChild(txt);
+          builder.map.push(builder.pos, builder.pos + skipped, txt);
+          builder.col += skipped;
+          builder.pos += skipped;
+        }
+        if (!m) break;
+        pos += skipped + 1;
+        if (m[0] == "\t") {
+          var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
+          var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
+          builder.col += tabWidth;
+        } else {
+          var txt = builder.cm.options.specialCharPlaceholder(m[0]);
+          if (ie_upto8) content.appendChild(elt("span", [txt]));
+          else content.appendChild(txt);
+          builder.col += 1;
+        }
+        builder.map.push(builder.pos, builder.pos + 1, txt);
+        builder.pos++;
+      }
+    }
+    if (style || startStyle || endStyle || mustWrap) {
+      var fullStyle = style || "";
+      if (startStyle) fullStyle += startStyle;
+      if (endStyle) fullStyle += endStyle;
+      var token = elt("span", [content], fullStyle);
+      if (title) token.title = title;
+      return builder.content.appendChild(token);
+    }
+    builder.content.appendChild(content);
+  }
+
+  function buildTokenSplitSpaces(inner) {
+    function split(old) {
+      var out = " ";
+      for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
+      out += " ";
+      return out;
+    }
+    return function(builder, text, style, startStyle, endStyle, title) {
+      inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
+    };
+  }
+
+  // Work around nonsense dimensions being reported for stretches of
+  // right-to-left text.
+  function buildTokenBadBidi(inner, order) {
+    return function(builder, text, style, startStyle, endStyle, title) {
+      style = style ? style + " cm-force-border" : "cm-force-border";
+      var start = builder.pos, end = start + text.length;
+      for (;;) {
+        // Find the part that overlaps with the start of this text
+        for (var i = 0; i < order.length; i++) {
+          var part = order[i];
+          if (part.to > start && part.from <= start) break;
+        }
+        if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title);
+        inner(builder, text.slice(0, part.to - start), style, startStyle, null, title);
+        startStyle = null;
+        text = text.slice(part.to - start);
+        start = part.to;
+      }
+    };
+  }
+
+  function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
+    var widget = !ignoreWidget && marker.widgetNode;
+    if (widget) {
+      builder.map.push(builder.pos, builder.pos + size, widget);
+      builder.content.appendChild(widget);
+    }
+    builder.pos += size;
+  }
+
+  // Outputs a number of spans to make up a line, taking highlighting
+  // and marked text into account.
+  function insertLineContent(line, builder, styles) {
+    var spans = line.markedSpans, allText = line.text, at = 0;
+    if (!spans) {
+      for (var i = 1; i < styles.length; i+=2)
+        builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options));
+      return;
+    }
+
+    var len = allText.length, pos = 0, i = 1, text = "", style;
+    var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
+    for (;;) {
+      if (nextChange == pos) { // Update current marker set
+        spanStyle = spanEndStyle = spanStartStyle = title = "";
+        collapsed = null; nextChange = Infinity;
+        var foundBookmarks = [];
+        for (var j = 0; j < spans.length; ++j) {
+          var sp = spans[j], m = sp.marker;
+          if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
+            if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
+            if (m.className) spanStyle += " " + m.className;
+            if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
+            if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
+            if (m.title && !title) title = m.title;
+            if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
+              collapsed = sp;
+          } else if (sp.from > pos && nextChange > sp.from) {
+            nextChange = sp.from;
+          }
+          if (m.type == "bookmark" && sp.from == pos && m.widgetNode) foundBookmarks.push(m);
+        }
+        if (collapsed && (collapsed.from || 0) == pos) {
+          buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
+                             collapsed.marker, collapsed.from == null);
+          if (collapsed.to == null) return;
+        }
+        if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
+          buildCollapsedSpan(builder, 0, foundBookmarks[j]);
+      }
+      if (pos >= len) break;
+
+      var upto = Math.min(len, nextChange);
+      while (true) {
+        if (text) {
+          var end = pos + text.length;
+          if (!collapsed) {
+            var tokenText = end > upto ? text.slice(0, upto - pos) : text;
+            builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
+                             spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title);
+          }
+          if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
+          pos = end;
+          spanStartStyle = "";
+        }
+        text = allText.slice(at, at = styles[i++]);
+        style = interpretTokenStyle(styles[i++], builder.cm.options);
+      }
+    }
+  }
+
+  // DOCUMENT DATA STRUCTURE
+
+  // By default, updates that start and end at the beginning of a line
+  // are treated specially, in order to make the association of line
+  // widgets and marker elements with the text behave more intuitive.
+  function isWholeLineUpdate(doc, change) {
+    return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
+      (!doc.cm || doc.cm.options.wholeLineUpdateBefore);
+  }
+
+  // Perform a change on the document data structure.
+  function updateDoc(doc, change, markedSpans, estimateHeight) {
+    function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
+    function update(line, text, spans) {
+      updateLine(line, text, spans, estimateHeight);
+      signalLater(line, "change", line, change);
+    }
+
+    var from = change.from, to = change.to, text = change.text;
+    var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
+    var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
+
+    // Adjust the line structure
+    if (isWholeLineUpdate(doc, change)) {
+      // This is a whole-line replace. Treated specially to make
+      // sure line objects move the way they are supposed to.
+      for (var i = 0, added = []; i < text.length - 1; ++i)
+        added.push(new Line(text[i], spansFor(i), estimateHeight));
+      update(lastLine, lastLine.text, lastSpans);
+      if (nlines) doc.remove(from.line, nlines);
+      if (added.length) doc.insert(from.line, added);
+    } else if (firstLine == lastLine) {
+      if (text.length == 1) {
+        update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
+      } else {
+        for (var added = [], i = 1; i < text.length - 1; ++i)
+          added.push(new Line(text[i], spansFor(i), estimateHeight));
+        added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
+        update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
+        doc.insert(from.line + 1, added);
+      }
+    } else if (text.length == 1) {
+      update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
+      doc.remove(from.line + 1, nlines);
+    } else {
+      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
+      update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
+      for (var i = 1, added = []; i < text.length - 1; ++i)
+        added.push(new Line(text[i], spansFor(i), estimateHeight));
+      if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
+      doc.insert(from.line + 1, added);
+    }
+
+    signalLater(doc, "change", doc, change);
+  }
+
+  // The document is represented as a BTree consisting of leaves, with
+  // chunk of lines in them, and branches, with up to ten leaves or
+  // other branch nodes below them. The top node is always a branch
+  // node, and is the document object itself (meaning it has
+  // additional methods and properties).
+  //
+  // All nodes have parent links. The tree is used both to go from
+  // line numbers to line objects, and to go from objects to numbers.
+  // It also indexes by height, and is used to convert between height
+  // and line object, and to find the total height of the document.
+  //
+  // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
+
+  function LeafChunk(lines) {
+    this.lines = lines;
+    this.parent = null;
+    for (var i = 0, height = 0; i < lines.length; ++i) {
+      lines[i].parent = this;
+      height += lines[i].height;
+    }
+    this.height = height;
+  }
+
+  LeafChunk.prototype = {
+    chunkSize: function() { return this.lines.length; },
+    // Remove the n lines at offset 'at'.
+    removeInner: function(at, n) {
+      for (var i = at, e = at + n; i < e; ++i) {
+        var line = this.lines[i];
+        this.height -= line.height;
+        cleanUpLine(line);
+        signalLater(line, "delete");
+      }
+      this.lines.splice(at, n);
+    },
+    // Helper used to collapse a small branch into a single leaf.
+    collapse: function(lines) {
+      lines.push.apply(lines, this.lines);
+    },
+    // Insert the given array of lines at offset 'at', count them as
+    // having the given height.
+    insertInner: function(at, lines, height) {
+      this.height += height;
+      this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
+      for (var i = 0; i < lines.length; ++i) lines[i].parent = this;
+    },
+    // Used to iterate over a part of the tree.
+    iterN: function(at, n, op) {
+      for (var e = at + n; at < e; ++at)
+        if (op(this.lines[at])) return true;
+    }
+  };
+
+  function BranchChunk(children) {
+    this.children = children;
+    var size = 0, height = 0;
+    for (var i = 0; i < children.length; ++i) {
+      var ch = children[i];
+      size += ch.chunkSize(); height += ch.height;
+      ch.parent = this;
+    }
+    this.size = size;
+    this.height = height;
+    this.parent = null;
+  }
+
+  BranchChunk.prototype = {
+    chunkSize: function() { return this.size; },
+    removeInner: function(at, n) {
+      this.size -= n;
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this.children[i], sz = child.chunkSize();
+        if (at < sz) {
+          var rm = Math.min(n, sz - at), oldHeight = child.height;
+          child.removeInner(at, rm);
+          this.height -= oldHeight - child.height;
+          if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
+          if ((n -= rm) == 0) break;
+          at = 0;
+        } else at -= sz;
+      }
+      // If the result is smaller than 25 lines, ensure that it is a
+      // single leaf node.
+      if (this.size - n < 25 &&
+          (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
+        var lines = [];
+        this.collapse(lines);
+        this.children = [new LeafChunk(lines)];
+        this.children[0].parent = this;
+      }
+    },
+    collapse: function(lines) {
+      for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
+    },
+    insertInner: function(at, lines, height) {
+      this.size += lines.length;
+      this.height += height;
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this.children[i], sz = child.chunkSize();
+        if (at <= sz) {
+          child.insertInner(at, lines, height);
+          if (child.lines && child.lines.length > 50) {
+            while (child.lines.length > 50) {
+              var spilled = child.lines.splice(child.lines.length - 25, 25);
+              var newleaf = new LeafChunk(spilled);
+              child.height -= newleaf.height;
+              this.children.splice(i + 1, 0, newleaf);
+              newleaf.parent = this;
+            }
+            this.maybeSpill();
+          }
+          break;
+        }
+        at -= sz;
+      }
+    },
+    // When a node has grown, check whether it should be split.
+    maybeSpill: function() {
+      if (this.children.length <= 10) return;
+      var me = this;
+      do {
+        var spilled = me.children.splice(me.children.length - 5, 5);
+        var sibling = new BranchChunk(spilled);
+        if (!me.parent) { // Become the parent node
+          var copy = new BranchChunk(me.children);
+          copy.parent = me;
+          me.children = [copy, sibling];
+          me = copy;
+        } else {
+          me.size -= sibling.size;
+          me.height -= sibling.height;
+          var myIndex = indexOf(me.parent.children, me);
+          me.parent.children.splice(myIndex + 1, 0, sibling);
+        }
+        sibling.parent = me.parent;
+      } while (me.children.length > 10);
+      me.parent.maybeSpill();
+    },
+    iterN: function(at, n, op) {
+      for (var i = 0; i < this.children.length; ++i) {
+        var child = this.children[i], sz = child.chunkSize();
+        if (at < sz) {
+          var used = Math.min(n, sz - at);
+          if (child.iterN(at, used, op)) return true;
+          if ((n -= used) == 0) break;
+          at = 0;
+        } else at -= sz;
+      }
+    }
+  };
+
+  var nextDocId = 0;
+  var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
+    if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
+    if (firstLine == null) firstLine = 0;
+
+    BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
+    this.first = firstLine;
+    this.scrollTop = this.scrollLeft = 0;
+    this.cantEdit = false;
+    this.cleanGeneration = 1;
+    this.frontier = firstLine;
+    var start = Pos(firstLine, 0);
+    this.sel = simpleSelection(start);
+    this.history = new History(null);
+    this.id = ++nextDocId;
+    this.modeOption = mode;
+
+    if (typeof text == "string") text = splitLines(text);
+    updateDoc(this, {from: start, to: start, text: text});
+    setSelection(this, simpleSelection(start), sel_dontScroll);
+  };
+
+  Doc.prototype = createObj(BranchChunk.prototype, {
+    constructor: Doc,
+    // Iterate over the document. Supports two forms -- with only one
+    // argument, it calls that for each line in the document. With
+    // three, it iterates over the range given by the first two (with
+    // the second being non-inclusive).
+    iter: function(from, to, op) {
+      if (op) this.iterN(from - this.first, to - from, op);
+      else this.iterN(this.first, this.first + this.size, from);
+    },
+
+    // Non-public interface for adding and removing lines.
+    insert: function(at, lines) {
+      var height = 0;
+      for (var i = 0; i < lines.length; ++i) height += lines[i].height;
+      this.insertInner(at - this.first, lines, height);
+    },
+    remove: function(at, n) { this.removeInner(at - this.first, n); },
+
+    // From here, the methods are part of the public interface. Most
+    // are also available from CodeMirror (editor) instances.
+
+    getValue: function(lineSep) {
+      var lines = getLines(this, this.first, this.first + this.size);
+      if (lineSep === false) return lines;
+      return lines.join(lineSep || "\n");
+    },
+    setValue: docMethodOp(function(code) {
+      var top = Pos(this.first, 0), last = this.first + this.size - 1;
+      makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
+                        text: splitLines(code), origin: "setValue"}, true);
+      setSelection(this, simpleSelection(top));
+    }),
+    replaceRange: function(code, from, to, origin) {
+      from = clipPos(this, from);
+      to = to ? clipPos(this, to) : from;
+      replaceRange(this, code, from, to, origin);
+    },
+    getRange: function(from, to, lineSep) {
+      var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
+      if (lineSep === false) return lines;
+      return lines.join(lineSep || "\n");
+    },
+
+    getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
+
+    getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
+    getLineNumber: function(line) {return lineNo(line);},
+
+    getLineHandleVisualStart: function(line) {
+      if (typeof line == "number") line = getLine(this, line);
+      return visualLine(line);
+    },
+
+    lineCount: function() {return this.size;},
+    firstLine: function() {return this.first;},
+    lastLine: function() {return this.first + this.size - 1;},
+
+    clipPos: function(pos) {return clipPos(this, pos);},
+
+    getCursor: function(start) {
+      var range = this.sel.primary(), pos;
+      if (start == null || start == "head") pos = range.head;
+      else if (start == "anchor") pos = range.anchor;
+      else if (start == "end" || start == "to" || start === false) pos = range.to();
+      else pos = range.from();
+      return pos;
+    },
+    listSelections: function() { return this.sel.ranges; },
+    somethingSelected: function() {return this.sel.somethingSelected();},
+
+    setCursor: docMethodOp(function(line, ch, options) {
+      setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
+    }),
+    setSelection: docMethodOp(function(anchor, head, options) {
+      setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
+    }),
+    extendSelection: docMethodOp(function(head, other, options) {
+      extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
+    }),
+    extendSelections: docMethodOp(function(heads, options) {
+      extendSelections(this, clipPosArray(this, heads, options));
+    }),
+    extendSelectionsBy: docMethodOp(function(f, options) {
+      extendSelections(this, map(this.sel.ranges, f), options);
+    }),
+    setSelections: docMethodOp(function(ranges, primary, options) {
+      if (!ranges.length) return;
+      for (var i = 0, out = []; i < ranges.length; i++)
+        out[i] = new Range(clipPos(this, ranges[i].anchor),
+                           clipPos(this, ranges[i].head));
+      if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
+      setSelection(this, normalizeSelection(out, primary), options);
+    }),
+    addSelection: docMethodOp(function(anchor, head, options) {
+      var ranges = this.sel.ranges.slice(0);
+      ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
+      setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
+    }),
+
+    getSelection: function(lineSep) {
+      var ranges = this.sel.ranges, lines;
+      for (var i = 0; i < ranges.length; i++) {
+        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
+        lines = lines ? lines.concat(sel) : sel;
+      }
+      if (lineSep === false) return lines;
+      else return lines.join(lineSep || "\n");
+    },
+    getSelections: function(lineSep) {
+      var parts = [], ranges = this.sel.ranges;
+      for (var i = 0; i < ranges.length; i++) {
+        var sel = getBetween(this, ranges[i].from(), ranges[i].to());
+        if (lineSep !== false) sel = sel.join(lineSep || "\n");
+        parts[i] = sel;
+      }
+      return parts;
+    },
+    replaceSelection: function(code, collapse, origin) {
+      var dup = [];
+      for (var i = 0; i < this.sel.ranges.length; i++)
+        dup[i] = code;
+      this.replaceSelections(dup, collapse, origin || "+input");
+    },
+    replaceSelections: docMethodOp(function(code, collapse, origin) {
+      var changes = [], sel = this.sel;
+      for (var i = 0; i < sel.ranges.length; i++) {
+        var range = sel.ranges[i];
+        changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin};
+      }
+      var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
+      for (var i = changes.length - 1; i >= 0; i--)
+        makeChange(this, changes[i]);
+      if (newSel) setSelectionReplaceHistory(this, newSel);
+      else if (this.cm) ensureCursorVisible(this.cm);
+    }),
+    undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
+    redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
+    undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
+    redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),
+
+    setExtending: function(val) {this.extend = val;},
+    getExtending: function() {return this.extend;},
+
+    historySize: function() {
+      var hist = this.history, done = 0, undone = 0;
+      for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
+      for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
+      return {undo: done, redo: undone};
+    },
+    clearHistory: function() {this.history = new History(this.history.maxGeneration);},
+
+    markClean: function() {
+      this.cleanGeneration = this.changeGeneration(true);
+    },
+    changeGeneration: function(forceSplit) {
+      if (forceSplit)
+        this.history.lastOp = this.history.lastOrigin = null;
+      return this.history.generation;
+    },
+    isClean: function (gen) {
+      return this.history.generation == (gen || this.cleanGeneration);
+    },
+
+    getHistory: function() {
+      return {done: copyHistoryArray(this.history.done),
+              undone: copyHistoryArray(this.history.undone)};
+    },
+    setHistory: function(histData) {
+      var hist = this.history = new History(this.history.maxGeneration);
+      hist.done = copyHistoryArray(histData.done.slice(0), null, true);
+      hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
+    },
+
+    markText: function(from, to, options) {
+      return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
+    },
+    setBookmark: function(pos, options) {
+      var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
+                      insertLeft: options && options.insertLeft,
+                      clearWhenEmpty: false, shared: options && options.shared};
+      pos = clipPos(this, pos);
+      return markText(this, pos, pos, realOpts, "bookmark");
+    },
+    findMarksAt: function(pos) {
+      pos = clipPos(this, pos);
+      var markers = [], spans = getLine(this, pos.line).markedSpans;
+      if (spans) for (var i = 0; i < spans.length; ++i) {
+        var span = spans[i];
+        if ((span.from == null || span.from <= pos.ch) &&
+            (span.to == null || span.to >= pos.ch))
+          markers.push(span.marker.parent || span.marker);
+      }
+      return markers;
+    },
+    findMarks: function(from, to, filter) {
+      from = clipPos(this, from); to = clipPos(this, to);
+      var found = [], lineNo = from.line;
+      this.iter(from.line, to.line + 1, function(line) {
+        var spans = line.markedSpans;
+        if (spans) for (var i = 0; i < spans.length; i++) {
+          var span = spans[i];
+          if (!(lineNo == from.line && from.ch > span.to ||
+                span.from == null && lineNo != from.line||
+                lineNo == to.line && span.from > to.ch) &&
+              (!filter || filter(span.marker)))
+            found.push(span.marker.parent || span.marker);
+        }
+        ++lineNo;
+      });
+      return found;
+    },
+    getAllMarks: function() {
+      var markers = [];
+      this.iter(function(line) {
+        var sps = line.markedSpans;
+        if (sps) for (var i = 0; i < sps.length; ++i)
+          if (sps[i].from != null) markers.push(sps[i].marker);
+      });
+      return markers;
+    },
+
+    posFromIndex: function(off) {
+      var ch, lineNo = this.first;
+      this.iter(function(line) {
+        var sz = line.text.length + 1;
+        if (sz > off) { ch = off; return true; }
+        off -= sz;
+        ++lineNo;
+      });
+      return clipPos(this, Pos(lineNo, ch));
+    },
+    indexFromPos: function (coords) {
+      coords = clipPos(this, coords);
+      var index = coords.ch;
+      if (coords.line < this.first || coords.ch < 0) return 0;
+      this.iter(this.first, coords.line, function (line) {
+        index += line.text.length + 1;
+      });
+      return index;
+    },
+
+    copy: function(copyHistory) {
+      var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
+      doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
+      doc.sel = this.sel;
+      doc.extend = false;
+      if (copyHistory) {
+        doc.history.undoDepth = this.history.undoDepth;
+        doc.setHistory(this.getHistory());
+      }
+      return doc;
+    },
+
+    linkedDoc: function(options) {
+      if (!options) options = {};
+      var from = this.first, to = this.first + this.size;
+      if (options.from != null && options.from > from) from = options.from;
+      if (options.to != null && options.to < to) to = options.to;
+      var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
+      if (options.sharedHist) copy.history = this.history;
+      (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
+      copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
+      copySharedMarkers(copy, findSharedMarkers(this));
+      return copy;
+    },
+    unlinkDoc: function(other) {
+      if (other instanceof CodeMirror) other = other.doc;
+      if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
+        var link = this.linked[i];
+        if (link.doc != other) continue;
+        this.linked.splice(i, 1);
+        other.unlinkDoc(this);
+        detachSharedMarkers(findSharedMarkers(this));
+        break;
+      }
+      // If the histories were shared, split them again
+      if (other.history == this.history) {
+        var splitIds = [other.id];
+        linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
+        other.history = new History(null);
+        other.history.done = copyHistoryArray(this.history.done, splitIds);
+        other.history.undone = copyHistoryArray(this.history.undone, splitIds);
+      }
+    },
+    iterLinkedDocs: function(f) {linkedDocs(this, f);},
+
+    getMode: function() {return this.mode;},
+    getEditor: function() {return this.cm;}
+  });
+
+  // Public alias.
+  Doc.prototype.eachLine = Doc.prototype.iter;
+
+  // Set up methods on CodeMirror's prototype to redirect to the editor's document.
+  var dontDelegate = "iter insert remove copy getEditor".split(" ");
+  for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
+    CodeMirror.prototype[prop] = (function(method) {
+      return function() {return method.apply(this.doc, arguments);};
+    })(Doc.prototype[prop]);
+
+  eventMixin(Doc);
+
+  // Call f for all linked documents.
+  function linkedDocs(doc, f, sharedHistOnly) {
+    function propagate(doc, skip, sharedHist) {
+      if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
+        var rel = doc.linked[i];
+        if (rel.doc == skip) continue;
+        var shared = sharedHist && rel.sharedHist;
+        if (sharedHistOnly && !shared) continue;
+        f(rel.doc, shared);
+        propagate(rel.doc, doc, shared);
+      }
+    }
+    propagate(doc, null, true);
+  }
+
+  // Attach a document to an editor.
+  function attachDoc(cm, doc) {
+    if (doc.cm) throw new Error("This document is already in use.");
+    cm.doc = doc;
+    doc.cm = cm;
+    estimateLineHeights(cm);
+    loadMode(cm);
+    if (!cm.options.lineWrapping) findMaxLine(cm);
+    cm.options.mode = doc.modeOption;
+    regChange(cm);
+  }
+
+  // LINE UTILITIES
+
+  // Find the line object corresponding to the given line number.
+  function getLine(doc, n) {
+    n -= doc.first;
+    if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
+    for (var chunk = doc; !chunk.lines;) {
+      for (var i = 0;; ++i) {
+        var child = chunk.children[i], sz = child.chunkSize();
+        if (n < sz) { chunk = child; break; }
+        n -= sz;
+      }
+    }
+    return chunk.lines[n];
+  }
+
+  // Get the part of a document between two positions, as an array of
+  // strings.
+  function getBetween(doc, start, end) {
+    var out = [], n = start.line;
+    doc.iter(start.line, end.line + 1, function(line) {
+      var text = line.text;
+      if (n == end.line) text = text.slice(0, end.ch);
+      if (n == start.line) text = text.slice(start.ch);
+      out.push(text);
+      ++n;
+    });
+    return out;
+  }
+  // Get the lines between from and to, as array of strings.
+  function getLines(doc, from, to) {
+    var out = [];
+    doc.iter(from, to, function(line) { out.push(line.text); });
+    return out;
+  }
+
+  // Update the height of a line, propagating the height change
+  // upwards to parent nodes.
+  function updateLineHeight(line, height) {
+    var diff = height - line.height;
+    if (diff) for (var n = line; n; n = n.parent) n.height += diff;
+  }
+
+  // Given a line object, find its line number by walking up through
+  // its parent links.
+  function lineNo(line) {
+    if (line.parent == null) return null;
+    var cur = line.parent, no = indexOf(cur.lines, line);
+    for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
+      for (var i = 0;; ++i) {
+        if (chunk.children[i] == cur) break;
+        no += chunk.children[i].chunkSize();
+      }
+    }
+    return no + cur.first;
+  }
+
+  // Find the line at the given vertical position, using the height
+  // information in the document tree.
+  function lineAtHeight(chunk, h) {
+    var n = chunk.first;
+    outer: do {
+      for (var i = 0; i < chunk.children.length; ++i) {
+        var child = chunk.children[i], ch = child.height;
+        if (h < ch) { chunk = child; continue outer; }
+        h -= ch;
+        n += child.chunkSize();
+      }
+      return n;
+    } while (!chunk.lines);
+    for (var i = 0; i < chunk.lines.length; ++i) {
+      var line = chunk.lines[i], lh = line.height;
+      if (h < lh) break;
+      h -= lh;
+    }
+    return n + i;
+  }
+
+
+  // Find the height above the given line.
+  function heightAtLine(lineObj) {
+    lineObj = visualLine(lineObj);
+
+    var h = 0, chunk = lineObj.parent;
+    for (var i = 0; i < chunk.lines.length; ++i) {
+      var line = chunk.lines[i];
+      if (line == lineObj) break;
+      else h += line.height;
+    }
+    for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
+      for (var i = 0; i < p.children.length; ++i) {
+        var cur = p.children[i];
+        if (cur == chunk) break;
+        else h += cur.height;
+      }
+    }
+    return h;
+  }
+
+  // Get the bidi ordering for the given line (and cache it). Returns
+  // false for lines that are fully left-to-right, and an array of
+  // BidiSpan objects otherwise.
+  function getOrder(line) {
+    var order = line.order;
+    if (order == null) order = line.order = bidiOrdering(line.text);
+    return order;
+  }
+
+  // HISTORY
+
+  function History(startGen) {
+    // Arrays of change events and selections. Doing something adds an
+    // event to done and clears undo. Undoing moves events from done
+    // to undone, redoing moves them in the other direction.
+    this.done = []; this.undone = [];
+    this.undoDepth = Infinity;
+    // Used to track when changes can be merged into a single undo
+    // event
+    this.lastModTime = this.lastSelTime = 0;
+    this.lastOp = null;
+    this.lastOrigin = this.lastSelOrigin = null;
+    // Used by the isClean() method
+    this.generation = this.maxGeneration = startGen || 1;
+  }
+
+  // Create a history change event from an updateDoc-style change
+  // object.
+  function historyChangeFromChange(doc, change) {
+    var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
+    attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
+    linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
+    return histChange;
+  }
+
+  // Pop all selection events off the end of a history array. Stop at
+  // a change event.
+  function clearSelectionEvents(array) {
+    while (array.length) {
+      var last = lst(array);
+      if (last.ranges) array.pop();
+      else break;
+    }
+  }
+
+  // Find the top change event in the history. Pop off selection
+  // events that are in the way.
+  function lastChangeEvent(hist, force) {
+    if (force) {
+      clearSelectionEvents(hist.done);
+      return lst(hist.done);
+    } else if (hist.done.length && !lst(hist.done).ranges) {
+      return lst(hist.done);
+    } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
+      hist.done.pop();
+      return lst(hist.done);
+    }
+  }
+
+  // Register a change in the history. Merges changes that are within
+  // a single operation, ore are close together with an origin that
+  // allows merging (starting with "+") into a single event.
+  function addChangeToHistory(doc, change, selAfter, opId) {
+    var hist = doc.history;
+    hist.undone.length = 0;
+    var time = +new Date, cur;
+
+    if ((hist.lastOp == opId ||
+         hist.lastOrigin == change.origin && change.origin &&
+         ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
+          change.origin.charAt(0) == "*")) &&
+        (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
+      // Merge this change into the last event
+      var last = lst(cur.changes);
+      if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
+        // Optimized case for simple insertion -- don't want to add
+        // new changesets for every character typed
+        last.to = changeEnd(change);
+      } else {
+        // Add new sub-event
+        cur.changes.push(historyChangeFromChange(doc, change));
+      }
+    } else {
+      // Can not be merged, start a new event.
+      var before = lst(hist.done);
+      if (!before || !before.ranges)
+        pushSelectionToHistory(doc.sel, hist.done);
+      cur = {changes: [historyChangeFromChange(doc, change)],
+             generation: hist.generation};
+      hist.done.push(cur);
+      while (hist.done.length > hist.undoDepth) {
+        hist.done.shift();
+        if (!hist.done[0].ranges) hist.done.shift();
+      }
+    }
+    hist.done.push(selAfter);
+    hist.generation = ++hist.maxGeneration;
+    hist.lastModTime = hist.lastSelTime = time;
+    hist.lastOp = opId;
+    hist.lastOrigin = hist.lastSelOrigin = change.origin;
+
+    if (!last) signal(doc, "historyAdded");
+  }
+
+  function selectionEventCanBeMerged(doc, origin, prev, sel) {
+    var ch = origin.charAt(0);
+    return ch == "*" ||
+      ch == "+" &&
+      prev.ranges.length == sel.ranges.length &&
+      prev.somethingSelected() == sel.somethingSelected() &&
+      new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
+  }
+
+  // Called whenever the selection changes, sets the new selection as
+  // the pending selection in the history, and pushes the old pending
+  // selection into the 'done' array when it was significantly
+  // different (in number of selected ranges, emptiness, or time).
+  function addSelectionToHistory(doc, sel, opId, options) {
+    var hist = doc.history, origin = options && options.origin;
+
+    // A new event is started when the previous origin does not match
+    // the current, or the origins don't allow matching. Origins
+    // starting with * are always merged, those starting with + are
+    // merged when similar and close together in time.
+    if (opId == hist.lastOp ||
+        (origin && hist.lastSelOrigin == origin &&
+         (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
+          selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
+      hist.done[hist.done.length - 1] = sel;
+    else
+      pushSelectionToHistory(sel, hist.done);
+
+    hist.lastSelTime = +new Date;
+    hist.lastSelOrigin = origin;
+    hist.lastOp = opId;
+    if (options && options.clearRedo !== false)
+      clearSelectionEvents(hist.undone);
+  }
+
+  function pushSelectionToHistory(sel, dest) {
+    var top = lst(dest);
+    if (!(top && top.ranges && top.equals(sel)))
+      dest.push(sel);
+  }
+
+  // Used to store marked span information in the history.
+  function attachLocalSpans(doc, change, from, to) {
+    var existing = change["spans_" + doc.id], n = 0;
+    doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
+      if (line.markedSpans)
+        (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
+      ++n;
+    });
+  }
+
+  // When un/re-doing restores text containing marked spans, those
+  // that have been explicitly cleared should not be restored.
+  function removeClearedSpans(spans) {
+    if (!spans) return null;
+    for (var i = 0, out; i < spans.length; ++i) {
+      if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
+      else if (out) out.push(spans[i]);
+    }
+    return !out ? spans : out.length ? out : null;
+  }
+
+  // Retrieve and filter the old marked spans stored in a change event.
+  function getOldSpans(doc, change) {
+    var found = change["spans_" + doc.id];
+    if (!found) return null;
+    for (var i = 0, nw = []; i < change.text.length; ++i)
+      nw.push(removeClearedSpans(found[i]));
+    return nw;
+  }
+
+  // Used both to provide a JSON-safe object in .getHistory, and, when
+  // detaching a document, to split the history in two
+  function copyHistoryArray(events, newGroup, instantiateSel) {
+    for (var i = 0, copy = []; i < events.length; ++i) {
+      var event = events[i];
+      if (event.ranges) {
+        copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
+        continue;
+      }
+      var changes = event.changes, newChanges = [];
+      copy.push({changes: newChanges});
+      for (var j = 0; j < changes.length; ++j) {
+        var change = changes[j], m;
+        newChanges.push({from: change.from, to: change.to, text: change.text});
+        if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
+          if (indexOf(newGroup, Number(m[1])) > -1) {
+            lst(newChanges)[prop] = change[prop];
+            delete change[prop];
+          }
+        }
+      }
+    }
+    return copy;
+  }
+
+  // Rebasing/resetting history to deal with externally-sourced changes
+
+  function rebaseHistSelSingle(pos, from, to, diff) {
+    if (to < pos.line) {
+      pos.line += diff;
+    } else if (from < pos.line) {
+      pos.line = from;
+      pos.ch = 0;
+    }
+  }
+
+  // Tries to rebase an array of history events given a change in the
+  // document. If the change touches the same lines as the event, the
+  // event, and everything 'behind' it, is discarded. If the change is
+  // before the event, the event's positions are updated. Uses a
+  // copy-on-write scheme for the positions, to avoid having to
+  // reallocate them all on every rebase, but also avoid problems with
+  // shared position objects being unsafely updated.
+  function rebaseHistArray(array, from, to, diff) {
+    for (var i = 0; i < array.length; ++i) {
+      var sub = array[i], ok = true;
+      if (sub.ranges) {
+        if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
+        for (var j = 0; j < sub.ranges.length; j++) {
+          rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
+          rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
+        }
+        continue;
+      }
+      for (var j = 0; j < sub.changes.length; ++j) {
+        var cur = sub.changes[j];
+        if (to < cur.from.line) {
+          cur.from = Pos(cur.from.line + diff, cur.from.ch);
+          cur.to = Pos(cur.to.line + diff, cur.to.ch);
+        } else if (from <= cur.to.line) {
+          ok = false;
+          break;
+        }
+      }
+      if (!ok) {
+        array.splice(0, i + 1);
+        i = 0;
+      }
+    }
+  }
+
+  function rebaseHist(hist, change) {
+    var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
+    rebaseHistArray(hist.done, from, to, diff);
+    rebaseHistArray(hist.undone, from, to, diff);
+  }
+
+  // EVENT UTILITIES
+
+  // Due to the fact that we still support jurassic IE versions, some
+  // compatibility wrappers are needed.
+
+  var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
+    if (e.preventDefault) e.preventDefault();
+    else e.returnValue = false;
+  };
+  var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
+    if (e.stopPropagation) e.stopPropagation();
+    else e.cancelBubble = true;
+  };
+  function e_defaultPrevented(e) {
+    return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
+  }
+  var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};
+
+  function e_target(e) {return e.target || e.srcElement;}
+  function e_button(e) {
+    var b = e.which;
+    if (b == null) {
+      if (e.button & 1) b = 1;
+      else if (e.button & 2) b = 3;
+      else if (e.button & 4) b = 2;
+    }
+    if (mac && e.ctrlKey && b == 1) b = 3;
+    return b;
+  }
+
+  // EVENT HANDLING
+
+  // Lightweight event framework. on/off also work on DOM nodes,
+  // registering native DOM handlers.
+
+  var on = CodeMirror.on = function(emitter, type, f) {
+    if (emitter.addEventListener)
+      emitter.addEventListener(type, f, false);
+    else if (emitter.attachEvent)
+      emitter.attachEvent("on" + type, f);
+    else {
+      var map = emitter._handlers || (emitter._handlers = {});
+      var arr = map[type] || (map[type] = []);
+      arr.push(f);
+    }
+  };
+
+  var off = CodeMirror.off = function(emitter, type, f) {
+    if (emitter.removeEventListener)
+      emitter.removeEventListener(type, f, false);
+    else if (emitter.detachEvent)
+      emitter.detachEvent("on" + type, f);
+    else {
+      var arr = emitter._handlers && emitter._handlers[type];
+      if (!arr) return;
+      for (var i = 0; i < arr.length; ++i)
+        if (arr[i] == f) { arr.splice(i, 1); break; }
+    }
+  };
+
+  var signal = CodeMirror.signal = function(emitter, type /*, values...*/) {
+    var arr = emitter._handlers && emitter._handlers[type];
+    if (!arr) return;
+    var args = Array.prototype.slice.call(arguments, 2);
+    for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
+  };
+
+  // Often, we want to signal events at a point where we are in the
+  // middle of some work, but don't want the handler to start calling
+  // other methods on the editor, which might be in an inconsistent
+  // state or simply not expect any other events to happen.
+  // signalLater looks whether there are any handlers, and schedules
+  // them to be executed when the last operation ends, or, if no
+  // operation is active, when a timeout fires.
+  var delayedCallbacks, delayedCallbackDepth = 0;
+  function signalLater(emitter, type /*, values...*/) {
+    var arr = emitter._handlers && emitter._handlers[type];
+    if (!arr) return;
+    var args = Array.prototype.slice.call(arguments, 2);
+    if (!delayedCallbacks) {
+      ++delayedCallbackDepth;
+      delayedCallbacks = [];
+      setTimeout(fireDelayed, 0);
+    }
+    function bnd(f) {return function(){f.apply(null, args);};};
+    for (var i = 0; i < arr.length; ++i)
+      delayedCallbacks.push(bnd(arr[i]));
+  }
+
+  function fireDelayed() {
+    --delayedCallbackDepth;
+    var delayed = delayedCallbacks;
+    delayedCallbacks = null;
+    for (var i = 0; i < delayed.length; ++i) delayed[i]();
+  }
+
+  // The DOM events that CodeMirror handles can be overridden by
+  // registering a (non-DOM) handler on the editor for the event name,
+  // and preventDefault-ing the event in that handler.
+  function signalDOMEvent(cm, e, override) {
+    signal(cm, override || e.type, cm, e);
+    return e_defaultPrevented(e) || e.codemirrorIgnore;
+  }
+
+  function signalCursorActivity(cm) {
+    var arr = cm._handlers && cm._handlers.cursorActivity;
+    if (!arr) return;
+    var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []);
+    for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1)
+      set.push(arr[i]);
+  }
+
+  function hasHandler(emitter, type) {
+    var arr = emitter._handlers && emitter._handlers[type];
+    return arr && arr.length > 0;
+  }
+
+  // Add on and off methods to a constructor's prototype, to make
+  // registering events on such objects more convenient.
+  function eventMixin(ctor) {
+    ctor.prototype.on = function(type, f) {on(this, type, f);};
+    ctor.prototype.off = function(type, f) {off(this, type, f);};
+  }
+
+  // MISC UTILITIES
+
+  // Number of pixels added to scroller and sizer to hide scrollbar
+  var scrollerCutOff = 30;
+
+  // Returned or thrown by various protocols to signal 'I'm not
+  // handling this'.
+  var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
+
+  // Reused option objects for setSelection & friends
+  var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};
+
+  function Delayed() {this.id = null;}
+  Delayed.prototype.set = function(ms, f) {
+    clearTimeout(this.id);
+    this.id = setTimeout(f, ms);
+  };
+
+  // Counts the column offset in a string, taking tabs into account.
+  // Used mostly to find indentation.
+  var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {
+    if (end == null) {
+      end = string.search(/[^\s\u00a0]/);
+      if (end == -1) end = string.length;
+    }
+    for (var i = startIndex || 0, n = startValue || 0;;) {
+      var nextTab = string.indexOf("\t", i);
+      if (nextTab < 0 || nextTab >= end)
+        return n + (end - i);
+      n += nextTab - i;
+      n += tabSize - (n % tabSize);
+      i = nextTab + 1;
+    }
+  };
+
+  // The inverse of countColumn -- find the offset that corresponds to
+  // a particular column.
+  function findColumn(string, goal, tabSize) {
+    for (var pos = 0, col = 0;;) {
+      var nextTab = string.indexOf("\t", pos);
+      if (nextTab == -1) nextTab = string.length;
+      var skipped = nextTab - pos;
+      if (nextTab == string.length || col + skipped >= goal)
+        return pos + Math.min(skipped, goal - col);
+      col += nextTab - pos;
+      col += tabSize - (col % tabSize);
+      pos = nextTab + 1;
+      if (col >= goal) return pos;
+    }
+  }
+
+  var spaceStrs = [""];
+  function spaceStr(n) {
+    while (spaceStrs.length <= n)
+      spaceStrs.push(lst(spaceStrs) + " ");
+    return spaceStrs[n];
+  }
+
+  function lst(arr) { return arr[arr.length-1]; }
+
+  var selectInput = function(node) { node.select(); };
+  if (ios) // Mobile Safari apparently has a bug where select() is broken.
+    selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
+  else if (ie) // Suppress mysterious IE10 errors
+    selectInput = function(node) { try { node.select(); } catch(_e) {} };
+
+  function indexOf(array, elt) {
+    for (var i = 0; i < array.length; ++i)
+      if (array[i] == elt) return i;
+    return -1;
+  }
+  if ([].indexOf) indexOf = function(array, elt) { return array.indexOf(elt); };
+  function map(array, f) {
+    var out = [];
+    for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
+    return out;
+  }
+  if ([].map) map = function(array, f) { return array.map(f); };
+
+  function createObj(base, props) {
+    var inst;
+    if (Object.create) {
+      inst = Object.create(base);
+    } else {
+      var ctor = function() {};
+      ctor.prototype = base;
+      inst = new ctor();
+    }
+    if (props) copyObj(props, inst);
+    return inst;
+  };
+
+  function copyObj(obj, target, overwrite) {
+    if (!target) target = {};
+    for (var prop in obj)
+      if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
+        target[prop] = obj[prop];
+    return target;
+  }
+
+  function bind(f) {
+    var args = Array.prototype.slice.call(arguments, 1);
+    return function(){return f.apply(null, args);};
+  }
+
+  var nonASCIISingleCaseWordChar = /[\u00df\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
+  var isWordChar = CodeMirror.isWordChar = function(ch) {
+    return /\w/.test(ch) || ch > "\x80" &&
+      (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
+  };
+
+  function isEmpty(obj) {
+    for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
+    return true;
+  }
+
+  // Extending unicode characters. A series of a non-extending char +
+  // any number of extending chars is treated as a single unit as far
+  // as editing and measuring is concerned. This is not fully correct,
+  // since some scripts/fonts/browsers also treat other configurations
+  // of code points as a group.
+  var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
+  function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }
+
+  // DOM UTILITIES
+
+  function elt(tag, content, className, style) {
+    var e = document.createElement(tag);
+    if (className) e.className = className;
+    if (style) e.style.cssText = style;
+    if (typeof content == "string") e.appendChild(document.createTextNode(content));
+    else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
+    return e;
+  }
+
+  var range;
+  if (document.createRange) range = function(node, start, end) {
+    var r = document.createRange();
+    r.setEnd(node, end);
+    r.setStart(node, start);
+    return r;
+  };
+  else range = function(node, start, end) {
+    var r = document.body.createTextRange();
+    r.moveToElementText(node.parentNode);
+    r.collapse(true);
+    r.moveEnd("character", end);
+    r.moveStart("character", start);
+    return r;
+  };
+
+  function removeChildren(e) {
+    for (var count = e.childNodes.length; count > 0; --count)
+      e.removeChild(e.firstChild);
+    return e;
+  }
+
+  function removeChildrenAndAdd(parent, e) {
+    return removeChildren(parent).appendChild(e);
+  }
+
+  function contains(parent, child) {
+    if (parent.contains)
+      return parent.contains(child);
+    while (child = child.parentNode)
+      if (child == parent) return true;
+  }
+
+  function activeElt() { return document.activeElement; }
+  // Older versions of IE throws unspecified error when touching
+  // document.activeElement in some cases (during loading, in iframe)
+  if (ie_upto10) activeElt = function() {
+    try { return document.activeElement; }
+    catch(e) { return document.body; }
+  };
+
+  function classTest(cls) { return new RegExp("\\b" + cls + "\\b\\s*"); }
+  function rmClass(node, cls) {
+    var test = classTest(cls);
+    if (test.test(node.className)) node.className = node.className.replace(test, "");
+  }
+  function addClass(node, cls) {
+    if (!classTest(cls).test(node.className)) node.className += " " + cls;
+  }
+  function joinClasses(a, b) {
+    var as = a.split(" ");
+    for (var i = 0; i < as.length; i++)
+      if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i];
+    return b;
+  }
+
+  // FEATURE DETECTION
+
+  // Detect drag-and-drop
+  var dragAndDrop = function() {
+    // There is *some* kind of drag-and-drop support in IE6-8, but I
+    // couldn't get it to work yet.
+    if (ie_upto8) return false;
+    var div = elt('div');
+    return "draggable" in div || "dragDrop" in div;
+  }();
+
+  var knownScrollbarWidth;
+  function scrollbarWidth(measure) {
+    if (knownScrollbarWidth != null) return knownScrollbarWidth;
+    var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
+    removeChildrenAndAdd(measure, test);
+    if (test.offsetWidth)
+      knownScrollbarWidth = test.offsetHeight - test.clientHeight;
+    return knownScrollbarWidth || 0;
+  }
+
+  var zwspSupported;
+  function zeroWidthElement(measure) {
+    if (zwspSupported == null) {
+      var test = elt("span", "\u200b");
+      removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
+      if (measure.firstChild.offsetHeight != 0)
+        zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_upto7;
+    }
+    if (zwspSupported) return elt("span", "\u200b");
+    else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
+  }
+
+  // Feature-detect IE's crummy client rect reporting for bidi text
+  var badBidiRects;
+  function hasBadBidiRects(measure) {
+    if (badBidiRects != null) return badBidiRects;
+    var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
+    var r0 = range(txt, 0, 1).getBoundingClientRect();
+    if (r0.left == r0.right) return false;
+    var r1 = range(txt, 1, 2).getBoundingClientRect();
+    return badBidiRects = (r1.right - r0.right < 3);
+  }
+
+  // See if "".split is the broken IE version, if so, provide an
+  // alternative way to split lines.
+  var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
+    var pos = 0, result = [], l = string.length;
+    while (pos <= l) {
+      var nl = string.indexOf("\n", pos);
+      if (nl == -1) nl = string.length;
+      var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
+      var rt = line.indexOf("\r");
+      if (rt != -1) {
+        result.push(line.slice(0, rt));
+        pos += rt + 1;
+      } else {
+        result.push(line);
+        pos = nl + 1;
+      }
+    }
+    return result;
+  } : function(string){return string.split(/\r\n?|\n/);};
+
+  var hasSelection = window.getSelection ? function(te) {
+    try { return te.selectionStart != te.selectionEnd; }
+    catch(e) { return false; }
+  } : function(te) {
+    try {var range = te.ownerDocument.selection.createRange();}
+    catch(e) {}
+    if (!range || range.parentElement() != te) return false;
+    return range.compareEndPoints("StartToEnd", range) != 0;
+  };
+
+  var hasCopyEvent = (function() {
+    var e = elt("div");
+    if ("oncopy" in e) return true;
+    e.setAttribute("oncopy", "return;");
+    return typeof e.oncopy == "function";
+  })();
+
+  // KEY NAMES
+
+  var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
+                  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
+                  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
+                  46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete",
+                  173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
+                  221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
+                  63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"};
+  CodeMirror.keyNames = keyNames;
+  (function() {
+    // Number keys
+    for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
+    // Alphabetic keys
+    for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
+    // Function keys
+    for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
+  })();
+
+  // BIDI HELPERS
+
+  function iterateBidiSections(order, from, to, f) {
+    if (!order) return f(from, to, "ltr");
+    var found = false;
+    for (var i = 0; i < order.length; ++i) {
+      var part = order[i];
+      if (part.from < to && part.to > from || from == to && part.to == from) {
+        f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
+        found = true;
+      }
+    }
+    if (!found) f(from, to, "ltr");
+  }
+
+  function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
+  function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
+
+  function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
+  function lineRight(line) {
+    var order = getOrder(line);
+    if (!order) return line.text.length;
+    return bidiRight(lst(order));
+  }
+
+  function lineStart(cm, lineN) {
+    var line = getLine(cm.doc, lineN);
+    var visual = visualLine(line);
+    if (visual != line) lineN = lineNo(visual);
+    var order = getOrder(visual);
+    var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
+    return Pos(lineN, ch);
+  }
+  function lineEnd(cm, lineN) {
+    var merged, line = getLine(cm.doc, lineN);
+    while (merged = collapsedSpanAtEnd(line)) {
+      line = merged.find(1, true).line;
+      lineN = null;
+    }
+    var order = getOrder(line);
+    var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
+    return Pos(lineN == null ? lineNo(line) : lineN, ch);
+  }
+
+  function compareBidiLevel(order, a, b) {
+    var linedir = order[0].level;
+    if (a == linedir) return true;
+    if (b == linedir) return false;
+    return a < b;
+  }
+  var bidiOther;
+  function getBidiPartAt(order, pos) {
+    bidiOther = null;
+    for (var i = 0, found; i < order.length; ++i) {
+      var cur = order[i];
+      if (cur.from < pos && cur.to > pos) return i;
+      if ((cur.from == pos || cur.to == pos)) {
+        if (found == null) {
+          found = i;
+        } else if (compareBidiLevel(order, cur.level, order[found].level)) {
+          if (cur.from != cur.to) bidiOther = found;
+          return i;
+        } else {
+          if (cur.from != cur.to) bidiOther = i;
+          return found;
+        }
+      }
+    }
+    return found;
+  }
+
+  function moveInLine(line, pos, dir, byUnit) {
+    if (!byUnit) return pos + dir;
+    do pos += dir;
+    while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
+    return pos;
+  }
+
+  // This is needed in order to move 'visually' through bi-directional
+  // text -- i.e., pressing left should make the cursor go left, even
+  // when in RTL text. The tricky part is the 'jumps', where RTL and
+  // LTR text touch each other. This often requires the cursor offset
+  // to move more than one unit, in order to visually move one unit.
+  function moveVisually(line, start, dir, byUnit) {
+    var bidi = getOrder(line);
+    if (!bidi) return moveLogically(line, start, dir, byUnit);
+    var pos = getBidiPartAt(bidi, start), part = bidi[pos];
+    var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);
+
+    for (;;) {
+      if (target > part.from && target < part.to) return target;
+      if (target == part.from || target == part.to) {
+        if (getBidiPartAt(bidi, target) == pos) return target;
+        part = bidi[pos += dir];
+        return (dir > 0) == part.level % 2 ? part.to : part.from;
+      } else {
+        part = bidi[pos += dir];
+        if (!part) return null;
+        if ((dir > 0) == part.level % 2)
+          target = moveInLine(line, part.to, -1, byUnit);
+        else
+          target = moveInLine(line, part.from, 1, byUnit);
+      }
+    }
+  }
+
+  function moveLogically(line, start, dir, byUnit) {
+    var target = start + dir;
+    if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
+    return target < 0 || target > line.text.length ? null : target;
+  }
+
+  // Bidirectional ordering algorithm
+  // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
+  // that this (partially) implements.
+
+  // One-char codes used for character types:
+  // L (L):   Left-to-Right
+  // R (R):   Right-to-Left
+  // r (AL):  Right-to-Left Arabic
+  // 1 (EN):  European Number
+  // + (ES):  European Number Separator
+  // % (ET):  European Number Terminator
+  // n (AN):  Arabic Number
+  // , (CS):  Common Number Separator
+  // m (NSM): Non-Spacing Mark
+  // b (BN):  Boundary Neutral
+  // s (B):   Paragraph Separator
+  // t (S):   Segment Separator
+  // w (WS):  Whitespace
+  // N (ON):  Other Neutrals
+
+  // Returns null if characters are ordered as they appear
+  // (left-to-right), or an array of sections ({from, to, level}
+  // objects) in the order in which they occur visually.
+  var bidiOrdering = (function() {
+    // Character types for codepoints 0 to 0xff
+    var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
+    // Character types for codepoints 0x600 to 0x6ff
+    var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
+    function charType(code) {
+      if (code <= 0xf7) return lowTypes.charAt(code);
+      else if (0x590 <= code && code <= 0x5f4) return "R";
+      else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
+      else if (0x6ee <= code && code <= 0x8ac) return "r";
+      else if (0x2000 <= code && code <= 0x200b) return "w";
+      else if (code == 0x200c) return "b";
+      else return "L";
+    }
+
+    var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
+    var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
+    // Browsers seem to always treat the boundaries of block elements as being L.
+    var outerType = "L";
+
+    function BidiSpan(level, from, to) {
+      this.level = level;
+      this.from = from; this.to = to;
+    }
+
+    return function(str) {
+      if (!bidiRE.test(str)) return false;
+      var len = str.length, types = [];
+      for (var i = 0, type; i < len; ++i)
+        types.push(type = charType(str.charCodeAt(i)));
+
+      // W1. Examine each non-spacing mark (NSM) in the level run, and
+      // change the type of the NSM to the type of the previous
+      // character. If the NSM is at the start of the level run, it will
+      // get the type of sor.
+      for (var i = 0, prev = outerType; i < len; ++i) {
+        var type = types[i];
+        if (type == "m") types[i] = prev;
+        else prev = type;
+      }
+
+      // W2. Search backwards from each instance of a European number
+      // until the first strong type (R, L, AL, or sor) is found. If an
+      // AL is found, change the type of the European number to Arabic
+      // number.
+      // W3. Change all ALs to R.
+      for (var i = 0, cur = outerType; i < len; ++i) {
+        var type = types[i];
+        if (type == "1" && cur == "r") types[i] = "n";
+        else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
+      }
+
+      // W4. A single European separator between two European numbers
+      // changes to a European number. A single common separator between
+      // two numbers of the same type changes to that type.
+      for (var i = 1, prev = types[0]; i < len - 1; ++i) {
+        var type = types[i];
+        if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
+        else if (type == "," && prev == types[i+1] &&
+                 (prev == "1" || prev == "n")) types[i] = prev;
+        prev = type;
+      }
+
+      // W5. A sequence of European terminators adjacent to European
+      // numbers changes to all European numbers.
+      // W6. Otherwise, separators and terminators change to Other
+      // Neutral.
+      for (var i = 0; i < len; ++i) {
+        var type = types[i];
+        if (type == ",") types[i] = "N";
+        else if (type == "%") {
+          for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
+          var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
+          for (var j = i; j < end; ++j) types[j] = replace;
+          i = end - 1;
+        }
+      }
+
+      // W7. Search backwards from each instance of a European number
+      // until the first strong type (R, L, or sor) is found. If an L is
+      // found, then change the type of the European number to L.
+      for (var i = 0, cur = outerType; i < len; ++i) {
+        var type = types[i];
+        if (cur == "L" && type == "1") types[i] = "L";
+        else if (isStrong.test(type)) cur = type;
+      }
+
+      // N1. A sequence of neutrals takes the direction of the
+      // surrounding strong text if the text on both sides has the same
+      // direction. European and Arabic numbers act as if they were R in
+      // terms of their influence on neutrals. Start-of-level-run (sor)
+      // and end-of-level-run (eor) are used at level run boundaries.
+      // N2. Any remaining neutrals take the embedding direction.
+      for (var i = 0; i < len; ++i) {
+        if (isNeutral.test(types[i])) {
+          for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
+          var before = (i ? types[i-1] : outerType) == "L";
+          var after = (end < len ? types[end] : outerType) == "L";
+          var replace = before || after ? "L" : "R";
+          for (var j = i; j < end; ++j) types[j] = replace;
+          i = end - 1;
+        }
+      }
+
+      // Here we depart from the documented algorithm, in order to avoid
+      // building up an actual levels array. Since there are only three
+      // levels (0, 1, 2) in an implementation that doesn't take
+      // explicit embedding into account, we can build up the order on
+      // the fly, without following the level-based algorithm.
+      var order = [], m;
+      for (var i = 0; i < len;) {
+        if (countsAsLeft.test(types[i])) {
+          var start = i;
+          for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
+          order.push(new BidiSpan(0, start, i));
+        } else {
+          var pos = i, at = order.length;
+          for (++i; i < len && types[i] != "L"; ++i) {}
+          for (var j = pos; j < i;) {
+            if (countsAsNum.test(types[j])) {
+              if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
+              var nstart = j;
+              for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
+              order.splice(at, 0, new BidiSpan(2, nstart, j));
+              pos = j;
+            } else ++j;
+          }
+          if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
+        }
+      }
+      if (order[0].level == 1 && (m = str.match(/^\s+/))) {
+        order[0].from = m[0].length;
+        order.unshift(new BidiSpan(0, 0, m[0].length));
+      }
+      if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
+        lst(order).to -= m[0].length;
+        order.push(new BidiSpan(0, len - m[0].length, len));
+      }
+      if (order[0].level != lst(order).level)
+        order.push(new BidiSpan(order[0].level, len, len));
+
+      return order;
+    };
+  })();
+
+  // THE END
+
+  CodeMirror.version = "4.1.0";
+
+  return CodeMirror;
+});
diff --git a/v3/js/codemirror/python.js b/v3/js/codemirror/python.js
new file mode 100644
index 000000000..f5530bcfd
--- /dev/null
+++ b/v3/js/codemirror/python.js
@@ -0,0 +1,388 @@
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
+
+
+CodeMirror.defineMode("python", function(conf, parserConf) {
+    var ERRORCLASS = 'error';
+
+    function wordRegexp(words) {
+        return new RegExp("^((" + words.join(")|(") + "))\\b");
+    }
+
+    var singleOperators = parserConf.singleOperators || new RegExp("^[\\+\\-\\*/%&|\\^~<>!]");
+    var singleDelimiters = parserConf.singleDelimiters || new RegExp('^[\\(\\)\\[\\]\\{\\}@,:`=;\\.]');
+    var doubleOperators = parserConf.doubleOperators || new RegExp("^((==)|(!=)|(<=)|(>=)|(<>)|(<<)|(>>)|(//)|(\\*\\*))");
+    var doubleDelimiters = parserConf.doubleDelimiters || new RegExp("^((\\+=)|(\\-=)|(\\*=)|(%=)|(/=)|(&=)|(\\|=)|(\\^=))");
+    var tripleDelimiters = parserConf.tripleDelimiters || new RegExp("^((//=)|(>>=)|(<<=)|(\\*\\*=))");
+    var identifiers = parserConf.identifiers|| new RegExp("^[_A-Za-z][_A-Za-z0-9]*");
+    var hangingIndent = parserConf.hangingIndent || parserConf.indentUnit;
+
+    var wordOperators = wordRegexp(['and', 'or', 'not', 'is', 'in']);
+    var commonkeywords = ['as', 'assert', 'break', 'class', 'continue',
+                          'def', 'del', 'elif', 'else', 'except', 'finally',
+                          'for', 'from', 'global', 'if', 'import',
+                          'lambda', 'pass', 'raise', 'return',
+                          'try', 'while', 'with', 'yield'];
+    var commonBuiltins = ['abs', 'all', 'any', 'bin', 'bool', 'bytearray', 'callable', 'chr',
+                          'classmethod', 'compile', 'complex', 'delattr', 'dict', 'dir', 'divmod',
+                          'enumerate', 'eval', 'filter', 'float', 'format', 'frozenset',
+                          'getattr', 'globals', 'hasattr', 'hash', 'help', 'hex', 'id',
+                          'input', 'int', 'isinstance', 'issubclass', 'iter', 'len',
+                          'list', 'locals', 'map', 'max', 'memoryview', 'min', 'next',
+                          'object', 'oct', 'open', 'ord', 'pow', 'property', 'range',
+                          'repr', 'reversed', 'round', 'set', 'setattr', 'slice',
+                          'sorted', 'staticmethod', 'str', 'sum', 'super', 'tuple',
+                          'type', 'vars', 'zip', '__import__', 'NotImplemented',
+                          'Ellipsis', '__debug__'];
+    var py2 = {'builtins': ['apply', 'basestring', 'buffer', 'cmp', 'coerce', 'execfile',
+                            'file', 'intern', 'long', 'raw_input', 'reduce', 'reload',
+                            'unichr', 'unicode', 'xrange', 'False', 'True', 'None'],
+               'keywords': ['exec', 'print']};
+    var py3 = {'builtins': ['ascii', 'bytes', 'exec', 'print'],
+               'keywords': ['nonlocal', 'False', 'True', 'None']};
+
+    if(parserConf.extra_keywords != undefined){
+        commonkeywords = commonkeywords.concat(parserConf.extra_keywords);
+    }
+    if(parserConf.extra_builtins != undefined){
+        commonBuiltins = commonBuiltins.concat(parserConf.extra_builtins);
+    }
+    if (!!parserConf.version && parseInt(parserConf.version, 10) === 3) {
+        commonkeywords = commonkeywords.concat(py3.keywords);
+        commonBuiltins = commonBuiltins.concat(py3.builtins);
+        var stringPrefixes = new RegExp("^(([rb]|(br))?('{3}|\"{3}|['\"]))", "i");
+    } else {
+        commonkeywords = commonkeywords.concat(py2.keywords);
+        commonBuiltins = commonBuiltins.concat(py2.builtins);
+        var stringPrefixes = new RegExp("^(([rub]|(ur)|(br))?('{3}|\"{3}|['\"]))", "i");
+    }
+    var keywords = wordRegexp(commonkeywords);
+    var builtins = wordRegexp(commonBuiltins);
+
+    var indentInfo = null;
+
+    // tokenizers
+    function tokenBase(stream, state) {
+        // Handle scope changes
+        if (stream.sol()) {
+            var scopeOffset = state.scopes[0].offset;
+            if (stream.eatSpace()) {
+                var lineOffset = stream.indentation();
+                if (lineOffset > scopeOffset) {
+                    indentInfo = 'indent';
+                } else if (lineOffset < scopeOffset) {
+                    indentInfo = 'dedent';
+                }
+                return null;
+            } else {
+                if (scopeOffset > 0) {
+                    dedent(stream, state);
+                }
+            }
+        }
+        if (stream.eatSpace()) {
+            return null;
+        }
+
+        var ch = stream.peek();
+
+        // Handle Comments
+        if (ch === '#') {
+            stream.skipToEnd();
+            return 'comment';
+        }
+
+        // Handle Number Literals
+        if (stream.match(/^[0-9\.]/, false)) {
+            var floatLiteral = false;
+            // Floats
+            if (stream.match(/^\d*\.\d+(e[\+\-]?\d+)?/i)) { floatLiteral = true; }
+            if (stream.match(/^\d+\.\d*/)) { floatLiteral = true; }
+            if (stream.match(/^\.\d+/)) { floatLiteral = true; }
+            if (floatLiteral) {
+                // Float literals may be "imaginary"
+                stream.eat(/J/i);
+                return 'number';
+            }
+            // Integers
+            var intLiteral = false;
+            // Hex
+            if (stream.match(/^0x[0-9a-f]+/i)) { intLiteral = true; }
+            // Binary
+            if (stream.match(/^0b[01]+/i)) { intLiteral = true; }
+            // Octal
+            if (stream.match(/^0o[0-7]+/i)) { intLiteral = true; }
+            // Decimal
+            if (stream.match(/^[1-9]\d*(e[\+\-]?\d+)?/)) {
+                // Decimal literals may be "imaginary"
+                stream.eat(/J/i);
+                // TODO - Can you have imaginary longs?
+                intLiteral = true;
+            }
+            // Zero by itself with no other piece of number.
+            if (stream.match(/^0(?![\dx])/i)) { intLiteral = true; }
+            if (intLiteral) {
+                // Integer literals may be "long"
+                stream.eat(/L/i);
+                return 'number';
+            }
+        }
+
+        // Handle Strings
+        if (stream.match(stringPrefixes)) {
+            state.tokenize = tokenStringFactory(stream.current());
+            return state.tokenize(stream, state);
+        }
+
+        // Handle operators and Delimiters
+        if (stream.match(tripleDelimiters) || stream.match(doubleDelimiters)) {
+            return null;
+        }
+        if (stream.match(doubleOperators)
+            || stream.match(singleOperators)
+            || stream.match(wordOperators)) {
+            return 'operator';
+        }
+        if (stream.match(singleDelimiters)) {
+            return null;
+        }
+
+        if (stream.match(keywords)) {
+            return 'keyword';
+        }
+
+        if (stream.match(builtins)) {
+            return 'builtin';
+        }
+
+        if (stream.match(/^(self|cls)\b/)) {
+            return "variable-2";
+        }
+
+        if (stream.match(identifiers)) {
+            if (state.lastToken == 'def' || state.lastToken == 'class') {
+                return 'def';
+            }
+            return 'variable';
+        }
+
+        // Handle non-detected items
+        stream.next();
+        return ERRORCLASS;
+    }
+
+    function tokenStringFactory(delimiter) {
+        while ('rub'.indexOf(delimiter.charAt(0).toLowerCase()) >= 0) {
+            delimiter = delimiter.substr(1);
+        }
+        var singleline = delimiter.length == 1;
+        var OUTCLASS = 'string';
+
+        function tokenString(stream, state) {
+            while (!stream.eol()) {
+                stream.eatWhile(/[^'"\\]/);
+                if (stream.eat('\\')) {
+                    stream.next();
+                    if (singleline && stream.eol()) {
+                        return OUTCLASS;
+                    }
+                } else if (stream.match(delimiter)) {
+                    state.tokenize = tokenBase;
+                    return OUTCLASS;
+                } else {
+                    stream.eat(/['"]/);
+                }
+            }
+            if (singleline) {
+                if (parserConf.singleLineStringErrors) {
+                    return ERRORCLASS;
+                } else {
+                    state.tokenize = tokenBase;
+                }
+            }
+            return OUTCLASS;
+        }
+        tokenString.isString = true;
+        return tokenString;
+    }
+
+    function indent(stream, state, type) {
+        type = type || 'py';
+        var indentUnit = 0;
+        if (type === 'py') {
+            if (state.scopes[0].type !== 'py') {
+                state.scopes[0].offset = stream.indentation();
+                return;
+            }
+            for (var i = 0; i < state.scopes.length; ++i) {
+                if (state.scopes[i].type === 'py') {
+                    indentUnit = state.scopes[i].offset + conf.indentUnit;
+                    break;
+                }
+            }
+        } else if (stream.match(/\s*($|#)/, false)) {
+            // An open paren/bracket/brace with only space or comments after it
+            // on the line will indent the next line a fixed amount, to make it
+            // easier to put arguments, list items, etc. on their own lines.
+            indentUnit = stream.indentation() + hangingIndent;
+        } else {
+            indentUnit = stream.column() + stream.current().length;
+        }
+        state.scopes.unshift({
+            offset: indentUnit,
+            type: type
+        });
+    }
+
+    function dedent(stream, state, type) {
+        type = type || 'py';
+        if (state.scopes.length == 1) return;
+        if (state.scopes[0].type === 'py') {
+            var _indent = stream.indentation();
+            var _indent_index = -1;
+            for (var i = 0; i < state.scopes.length; ++i) {
+                if (_indent === state.scopes[i].offset) {
+                    _indent_index = i;
+                    break;
+                }
+            }
+            if (_indent_index === -1) {
+                return true;
+            }
+            while (state.scopes[0].offset !== _indent) {
+                state.scopes.shift();
+            }
+            return false;
+        } else {
+            if (type === 'py') {
+                state.scopes[0].offset = stream.indentation();
+                return false;
+            } else {
+                if (state.scopes[0].type != type) {
+                    return true;
+                }
+                state.scopes.shift();
+                return false;
+            }
+        }
+    }
+
+    function tokenLexer(stream, state) {
+        indentInfo = null;
+        var style = state.tokenize(stream, state);
+        var current = stream.current();
+
+        // Handle '.' connected identifiers
+        if (current === '.') {
+            style = stream.match(identifiers, false) ? null : ERRORCLASS;
+            if (style === null && state.lastStyle === 'meta') {
+                // Apply 'meta' style to '.' connected identifiers when
+                // appropriate.
+                style = 'meta';
+            }
+            return style;
+        }
+
+        // Handle decorators
+        if (current === '@') {
+            return stream.match(identifiers, false) ? 'meta' : ERRORCLASS;
+        }
+
+        if ((style === 'variable' || style === 'builtin')
+            && state.lastStyle === 'meta') {
+            style = 'meta';
+        }
+
+        // Handle scope changes.
+        if (current === 'pass' || current === 'return') {
+            state.dedent += 1;
+        }
+        if (current === 'lambda') state.lambda = true;
+        if ((current === ':' && !state.lambda && state.scopes[0].type == 'py')
+            || indentInfo === 'indent') {
+            indent(stream, state);
+        }
+        var delimiter_index = '[({'.indexOf(current);
+        if (delimiter_index !== -1) {
+            indent(stream, state, '])}'.slice(delimiter_index, delimiter_index+1));
+        }
+        if (indentInfo === 'dedent') {
+            if (dedent(stream, state)) {
+                return ERRORCLASS;
+            }
+        }
+        delimiter_index = '])}'.indexOf(current);
+        if (delimiter_index !== -1) {
+            if (dedent(stream, state, current)) {
+                return ERRORCLASS;
+            }
+        }
+        if (state.dedent > 0 && stream.eol() && state.scopes[0].type == 'py') {
+            if (state.scopes.length > 1) state.scopes.shift();
+            state.dedent -= 1;
+        }
+
+        return style;
+    }
+
+    var external = {
+        startState: function(basecolumn) {
+            return {
+              tokenize: tokenBase,
+              scopes: [{offset:basecolumn || 0, type:'py'}],
+              lastStyle: null,
+              lastToken: null,
+              lambda: false,
+              dedent: 0
+          };
+        },
+
+        token: function(stream, state) {
+            var style = tokenLexer(stream, state);
+
+            state.lastStyle = style;
+
+            var current = stream.current();
+            if (current && style) {
+                state.lastToken = current;
+            }
+
+            if (stream.eol() && state.lambda) {
+                state.lambda = false;
+            }
+            return style;
+        },
+
+        indent: function(state) {
+            if (state.tokenize != tokenBase) {
+                return state.tokenize.isString ? CodeMirror.Pass : 0;
+            }
+
+            return state.scopes[0].offset;
+        },
+
+        lineComment: "#",
+        fold: "indent"
+    };
+    return external;
+});
+
+CodeMirror.defineMIME("text/x-python", "python");
+
+var words = function(str){return str.split(' ');};
+
+CodeMirror.defineMIME("text/x-cython", {
+  name: "python",
+  extra_keywords: words("by cdef cimport cpdef ctypedef enum except"+
+                        "extern gil include nogil property public"+
+                        "readonly struct union DEF IF ELIF ELSE")
+});
+
+});
diff --git a/v3/js/composingprograms.js b/v3/js/composingprograms.js
new file mode 100644
index 000000000..213ca984d
--- /dev/null
+++ b/v3/js/composingprograms.js
@@ -0,0 +1,212 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// simplified version of opt-frontend.js for ../composingprograms.html
+
+
+// Pre-reqs:
+// - pytutor.js
+// - jquery.ba-bbq.min.js
+// - jquery.ba-dotimeout.min.js // for event debouncing: http://benalman.com/code/projects/jquery-dotimeout/examples/debouncing/
+// - opt-frontend-common.js
+// - js/togetherjs/togetherjs-min.js
+// should all be imported BEFORE this file
+
+
+var originFrontendJsFile = 'composingprograms.js';
+
+
+function TogetherjsReadyHandler() {
+  populateTogetherJsShareUrl();
+  updateChatName();
+}
+
+function TogetherjsCloseHandler() {
+  // NOP
+}
+
+
+function executeCode(forceStartingInstr, forceRawInputLst) {
+    if (forceRawInputLst !== undefined) {
+        rawInputLst = forceRawInputLst; // UGLY global across modules, FIXME
+    }
+
+    backend_script = python3_backend_script; // Python 3
+
+    var backendOptionsObj = {cumulative_mode: ($('#cumulativeModeSelector').val() == 'true'),
+                             heap_primitives: false,
+                             show_only_outputs: false,
+                             py_crazy_mode: false,
+                             origin: originFrontendJsFile};
+
+    var surveyObj = getSurveyObject();
+    if (surveyObj) {
+      backendOptionsObj.survey = surveyObj;
+    }
+
+    var startingInstruction = forceStartingInstr ? forceStartingInstr : 0;
+
+    var frontendOptionsObj = {startingInstruction: startingInstruction,
+                              executeCodeWithRawInputFunc: executeCodeWithRawInput,
+                              updateOutputCallback: function() {$('#urlOutput,#embedCodeOutput').val('');},
+                              compactFuncLabels: true,
+                              showAllFrameLabels: true,
+                             }
+
+    executeCodeAndCreateViz(pyInputGetValue(),
+                            backend_script, backendOptionsObj,
+                            frontendOptionsObj,
+                            'pyOutputPane',
+                            optFinishSuccessfulExecution, handleUncaughtExceptionFunc);
+}
+
+$(document).ready(function() {
+  setSurveyHTML();
+  $('#signoutButton').click(signout);
+
+  genericOptFrontendReady(); // initialize at the very end
+});
+
+
+var chatDisplayName = null; // sign in with Google account to get your real chat name
+
+// for Google+ Web signin:
+// https://developers.google.com/+/web/signin/add-button
+function signinCallback(authResult) {
+  if (authResult) {
+    if (authResult['error'] == undefined){
+
+      $("#signinButton").hide();
+      $("#loggedInDiv").show();
+
+      // This sample assumes a client object has been created.
+      // To learn more about creating a client, check out the starter:
+      //  https://developers.google.com/+/quickstart/javascript
+      gapi.client.load('plus','v1', function() {
+        var request = gapi.client.plus.people.get({
+          'userId': 'me'
+        });
+        request.execute(function(resp) {
+          // From https://developers.google.com/+/web/people/#retrieve_an_authenticated_users_email_address
+
+          // Filter the emails object to find the user's primary account, which might
+          // not always be the first in the array. The filter() method supports IE9+.
+          var email = resp['emails'].filter(function(v) {
+            return v.type === 'account'; // Filter out the primary email
+          })[0].value; // get the email from the filtered results, should always be defined.
+
+          //alert('Real name: "' + resp.displayName + '", Email addr: "' + email + '"');
+
+          // if we can actually grab the display name (e.g., from a
+          // Google+ account), then use it
+          if (resp.displayName) {
+            chatDisplayName = resp.displayName;
+            updateChatName();
+          }
+
+          // otherwise try to look up the email address on the server to
+          // find a real name mapping on the server
+          else if (email) {
+            $.get('name_lookup.py',
+                  {email : email},
+                  function(data) {
+                    // fall back on email address
+                    chatDisplayName = data.name ? data.name + ' [staff]': email;
+                    updateChatName();
+                  },
+                  "json");
+          }
+        });
+      });
+
+      redrawConnectors(); // update all arrows at the end
+
+    } else {
+      console.log('signinCallback: error occurred');
+    }
+  } else {
+    console.log('signinCallback: empty authResult');  // Something went wrong
+  }
+}
+
+function updateChatName() {
+  if (chatDisplayName) {
+    $("#loggedInNameDisplay").html("Welcome, " + chatDisplayName);
+
+    if (TogetherJS.running) {
+      var p = TogetherJS.require("peers");
+      p.Self.update({name: chatDisplayName});
+      console.log('updateChatName:', p.Self.name);
+    }
+
+    redrawConnectors(); // update all arrows at the end
+  }
+}
+
+// adapted from https://developers.google.com/+/quickstart/javascript
+/**
+ * Calls the OAuth2 endpoint to disconnect the app for the user.
+ */
+function signout() {
+  chatDisplayName = null;
+  if (supports_html5_storage()) {
+    localStorage.removeItem('togetherjs.settings.name'); // purge from cache
+
+    // restore the default name
+    if (TogetherJS.running) {
+      var defaultName = $.parseJSON(localStorage.getItem('togetherjs.settings.defaultName'));
+      var p = TogetherJS.require("peers");
+      p.Self.update({name: defaultName});
+    }
+  }
+
+  var tok = gapi.auth.getToken();
+  if (tok) {
+    // Revoke the access token.
+    $.ajax({
+      type: 'GET',
+      url: 'https://accounts.google.com/o/oauth2/revoke?token=' +
+          tok.access_token,
+      async: false,
+      contentType: 'application/json',
+      dataType: 'jsonp',
+      success: function(result) {
+        $('#signinButton').show();
+        $('#loggedInDiv').hide();
+        redrawConnectors(); // update all arrows at the end
+      },
+      error: function(e) {
+        console.log(e);
+      }
+    });
+  }
+  else {
+    console.log('signout failed :(');
+  }
+}
diff --git a/v3/js/csc108h.js b/v3/js/csc108h.js
new file mode 100644
index 000000000..ccd5bb2d1
--- /dev/null
+++ b/v3/js/csc108h.js
@@ -0,0 +1,92 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// simplified version of opt-frontend.js for ../csc108h.html
+// for Paul Gries and Jennifer Campbell at Toronto
+
+
+// Pre-reqs:
+// - pytutor.js
+// - jquery.ba-bbq.min.js
+// - jquery.ba-dotimeout.min.js // for event debouncing: http://benalman.com/code/projects/jquery-dotimeout/examples/debouncing/
+// - opt-frontend-common.js
+// - js/togetherjs/togetherjs-min.js
+// should all be imported BEFORE this file
+
+
+var originFrontendJsFile = 'csc108h.js';
+
+function TogetherjsReadyHandler() {
+  populateTogetherJsShareUrl();
+}
+
+function TogetherjsCloseHandler() {
+  // NOP
+}
+
+
+function executeCode(forceStartingInstr, forceRawInputLst) {
+    if (forceRawInputLst !== undefined) {
+        rawInputLst = forceRawInputLst; // UGLY global across modules, FIXME
+    }
+
+    backend_script = python3_backend_script; // Python 3
+
+    var backendOptionsObj = {cumulative_mode: false,
+                             heap_primitives: true, // render all objects on the heap
+                             show_only_outputs: false,
+                             py_crazy_mode: false,
+                             origin: originFrontendJsFile};
+
+    var surveyObj = getSurveyObject();
+    if (surveyObj) {
+      backendOptionsObj.survey = surveyObj;
+    }
+
+    var startingInstruction = forceStartingInstr ? forceStartingInstr : 0;
+
+    var frontendOptionsObj = {startingInstruction: startingInstruction,
+                              executeCodeWithRawInputFunc: executeCodeWithRawInput,
+                              disableHeapNesting: true, // render all objects on the heap
+                              drawParentPointers: true, // show environment parent pointers
+                              textualMemoryLabels: true, // use text labels for references
+                              updateOutputCallback: function() {$('#urlOutput,#embedCodeOutput').val('');},
+                             }
+
+    executeCodeAndCreateViz(pyInputGetValue(),
+                            backend_script, backendOptionsObj,
+                            frontendOptionsObj,
+                            'pyOutputPane',
+                            optFinishSuccessfulExecution, handleUncaughtExceptionFunc);
+}
+
+$(document).ready(function() {
+  setSurveyHTML();
+  genericOptFrontendReady(); // initialize at the very end
+});
diff --git a/v3/js/d3.v2.min.js b/v3/js/d3.v2.min.js
new file mode 100644
index 000000000..2a1e13110
--- /dev/null
+++ b/v3/js/d3.v2.min.js
@@ -0,0 +1,4 @@
+(function(){function d(a,b){try{for(var c in b)Object.defineProperty(a.prototype,c,{value:b[c],enumerable:!1})}catch(d){a.prototype=b}}function f(a){var b=-1,c=a.length,d=[];while(++b<c)d.push(a[b]);return d}function g(a){return Array.prototype.slice.call(a)}function j(){}function m(a){return a}function n(){return this}function o(){return!0}function p(a){return typeof a=="function"?a:function(){return a}}function q(a,b,c){return function(){var d=c.apply(b,arguments);return arguments.length?a:d}}function r(a){return a!=null&&!isNaN(a)}function s(a){return a.length}function u(a){return a==null}function v(a){return a.replace(/^\s+|\s+$/g,"").replace(/\s+/g," ")}function w(a){var b=1;while(a*b%1)b*=10;return b}function z(){}function A(a){function d(){var c=b,d=-1,e=c.length,f;while(++d<e)(f=c[d].on)&&f.apply(this,arguments);return a}var b=[],c=new j;return d.on=function(d,e){var f=c.get(d),g;return arguments.length<2?f&&f.on:(f&&(f.on=null,b=b.slice(0,g=b.indexOf(f)).concat(b.slice(g+1)),c.remove(d)),e&&b.push(c.set(d,{on:e})),a)},d}function D(a,b){return b-(a?1+Math.floor(Math.log(a+Math.pow(10,1+Math.floor(Math.log(a)/Math.LN10)-b))/Math.LN10):1)}function E(a){return a+""}function F(a){var b=a.lastIndexOf("."),c=b>=0?a.substring(b):(b=a.length,""),d=[];while(b>0)d.push(a.substring(b-=3,b+3));return d.reverse().join(",")+c}function H(a,b){var c=Math.pow(10,Math.abs(8-b)*3);return{scale:b>8?function(a){return a/c}:function(a){return a*c},symbol:a}}function N(a){return function(b){return b<=0?0:b>=1?1:a(b)}}function O(a){return function(b){return 1-a(1-b)}}function P(a){return function(b){return.5*(b<.5?a(2*b):2-a(2-2*b))}}function Q(a){return a}function R(a){return function(b){return Math.pow(b,a)}}function S(a){return 1-Math.cos(a*Math.PI/2)}function T(a){return Math.pow(2,10*(a-1))}function U(a){return 1-Math.sqrt(1-a*a)}function V(a,b){var c;return arguments.length<2&&(b=.45),arguments.length<1?(a=1,c=b/4):c=b/(2*Math.PI)*Math.asin(1/a),function(d){return 1+a*Math.pow(2,10*-d)*Math.sin((d-c)*2*Math.PI/b)}}function W(a){return a||(a=1.70158),function(b){return b*b*((a+1)*b-a)}}function X(a){return a<1/2.75?7.5625*a*a:a<2/2.75?7.5625*(a-=1.5/2.75)*a+.75:a<2.5/2.75?7.5625*(a-=2.25/2.75)*a+.9375:7.5625*(a-=2.625/2.75)*a+.984375}function Y(){d3.event.stopPropagation(),d3.event.preventDefault()}function Z(){var a=d3.event,b;while(b=a.sourceEvent)a=b;return a}function $(a){var b=new z,c=0,d=arguments.length;while(++c<d)b[arguments[c]]=A(b);return b.of=function(c,d){return function(e){try{var f=e.sourceEvent=d3.event;e.target=a,d3.event=e,b[e.type].apply(c,d)}finally{d3.event=f}}},b}function ba(a){return a=="transform"?d3.interpolateTransform:d3.interpolate}function bb(a,b){return b=b-(a=+a)?1/(b-a):0,function(c){return(c-a)*b}}function bc(a,b){return b=b-(a=+a)?1/(b-a):0,function(c){return Math.max(0,Math.min(1,(c-a)*b))}}function bd(a,b,c){return new be(a,b,c)}function be(a,b,c){this.r=a,this.g=b,this.b=c}function bf(a){return a<16?"0"+Math.max(0,a).toString(16):Math.min(255,a).toString(16)}function bg(a,b,c){var d=0,e=0,f=0,g,h,i;g=/([a-z]+)\((.*)\)/i.exec(a);if(g){h=g[2].split(",");switch(g[1]){case"hsl":return c(parseFloat(h[0]),parseFloat(h[1])/100,parseFloat(h[2])/100);case"rgb":return b(bi(h[0]),bi(h[1]),bi(h[2]))}}return(i=bj.get(a))?b(i.r,i.g,i.b):(a!=null&&a.charAt(0)==="#"&&(a.length===4?(d=a.charAt(1),d+=d,e=a.charAt(2),e+=e,f=a.charAt(3),f+=f):a.length===7&&(d=a.substring(1,3),e=a.substring(3,5),f=a.substring(5,7)),d=parseInt(d,16),e=parseInt(e,16),f=parseInt(f,16)),b(d,e,f))}function bh(a,b,c){var d=Math.min(a/=255,b/=255,c/=255),e=Math.max(a,b,c),f=e-d,g,h,i=(e+d)/2;return f?(h=i<.5?f/(e+d):f/(2-e-d),a==e?g=(b-c)/f+(b<c?6:0):b==e?g=(c-a)/f+2:g=(a-b)/f+4,g*=60):h=g=0,bk(g,h,i)}function bi(a){var b=parseFloat(a);return a.charAt(a.length-1)==="%"?Math.round(b*2.55):b}function bk(a,b,c){return new bl(a,b,c)}function bl(a,b,c){this.h=a,this.s=b,this.l=c}function bm(a,b,c){function f(a){return a>360?a-=360:a<0&&(a+=360),a<60?d+(e-d)*a/60:a<180?e:a<240?d+(e-d)*(240-a)/60:d}function g(a){return Math.round(f(a)*255)}var d,e;return a%=360,a<0&&(a+=360),b=b<0?0:b>1?1:b,c=c<0?0:c>1?1:c,e=c<=.5?c*(1+b):c+b-c*b,d=2*c-e,bd(g(a+120),g(a),g(a-120))}function bn(a){return i(a,bt),a}function bu(a){return function(){return bo(a,this)}}function bv(a){return function(){return bp(a,this)}}function bw(a,b){function f(){if(b=this.classList)return b.add(a);var b=this.className,d=b.baseVal!=null,e=d?b.baseVal:b;c.lastIndex=0,c.test(e)||(e=v(e+" "+a),d?b.baseVal=e:this.className=e)}function g(){if(b=this.classList)return b.remove(a);var b=this.className,d=b.baseVal!=null,e=d?b.baseVal:b;e=v(e.replace(c," ")),d?b.baseVal=e:this.className=e}function h(){(b.apply(this,arguments)?f:g).call(this)}var c=new RegExp("(^|\\s+)"+d3.requote(a)+"(\\s+|$)","g");if(arguments.length<2){var d=this.node();if(e=d.classList)return e.contains(a);var e=d.className;return c.lastIndex=0,c.test(e.baseVal!=null?e.baseVal:e)}return this.each(typeof b=="function"?h:b?f:g)}function bx(a){return{__data__:a}}function by(a){return function(){return bs(this,a)}}function bz(a){return arguments.length||(a=d3.ascending),function(b,c){return a(b&&b.__data__,c&&c.__data__)}}function bA(a,b){for(var c=0,d=a.length;c<d;c++)for(var e=a[c],f=0,g=e.length,h;f<g;f++)(h=e[f])&&b(h,f,c);return a}function bC(a){return i(a,bD),a}function bE(a,b,c){i(a,bI);var d=new j,e=d3.dispatch("start","end"),f=bQ;return a.id=b,a.time=c,a.tween=function(b,c){return arguments.length<2?d.get(b):(c==null?d.remove(b):d.set(b,c),a)},a.ease=function(b){return arguments.length?(f=typeof b=="function"?b:d3.ease.apply(d3,arguments),a):f},a.each=function(b,c){return arguments.length<2?bR.call(a,b):(e.on(b,c),a)},d3.timer(function(g){return bA(a,function(a,h,i){function o(f){return m.active>b?q():(m.active=b,d.forEach(function(b,c){(c=c.call(a,n,h))&&j.push(c)}),e.start.call(a,n,h),p(f)||d3.timer(p,0,c),1)}function p(c){if(m.active!==b)return q();var d=(c-k)/l,g=f(d),i=j.length;while(i>0)j[--i].call(a,g);if(d>=1)return q(),bK=b,e.end.call(a,n,h),bK=0,1}function q(){return--m.count||delete a.__transition__,1}var j=[],k=a.delay,l=a.duration,m=(a=a.node).__transition__||(a.__transition__={active:0,count:0}),n=a.__data__;++m.count,k<=g?o(g):d3.timer(o,k,c)})},0,c),a}function bG(a,b,c){return c!=""&&bF}function bH(a,b){function d(a,d,e){var f=b.call(this,a,d);return f==null?e!=""&&bF:e!=f&&c(e,f)}function e(a,d,e){return e!=b&&c(e,b)}var c=ba(a);return typeof b=="function"?d:b==null?bG:(b+="",e)}function bR(a){var b=bK,c=bQ,d=bO,e=bP;return bK=this.id,bQ=this.ease(),bA(this,function(b,c,d){bO=b.delay,bP=b.duration,a.call(b=b.node,b.__data__,c,d)}),bK=b,bQ=c,bO=d,bP=e,this}function bV(){var a,b=Date.now(),c=bS;while(c)a=b-c.then,a>=c.delay&&(c.flush=c.callback(a)),c=c.next;var d=bW()-b;d>24?(isFinite(d)&&(clearTimeout(bU),bU=setTimeout(bV,d)),bT=0):(bT=1,bX(bV))}function bW(){var a=null,b=bS,c=Infinity;while(b)b.flush?b=a?a.next=b.next:bS=b.next:(c=Math.min(c,b.then+b.delay),b=(a=b).next);return c}function bY(a){var b=[a.a,a.b],c=[a.c,a.d],d=b$(b),e=bZ(b,c),f=b$(b_(c,b,-e))||0;b[0]*c[1]<c[0]*b[1]&&(b[0]*=-1,b[1]*=-1,d*=-1,e*=-1),this.rotate=(d?Math.atan2(b[1],b[0]):Math.atan2(-c[0],c[1]))*ca,this.translate=[a.e,a.f],this.scale=[d,f],this.skew=f?Math.atan2(e,f)*ca:0}function bZ(a,b){return a[0]*b[0]+a[1]*b[1]}function b$(a){var b=Math.sqrt(bZ(a,a));return b&&(a[0]/=b,a[1]/=b),b}function b_(a,b,c){return a[0]+=c*b[0],a[1]+=c*b[1],a}function cc(a,b){var c=a.ownerSVGElement||a;if(c.createSVGPoint){var d=c.createSVGPoint();if(cb<0&&(window.scrollX||window.scrollY)){c=d3.select(document.body).append("svg").style("position","absolute").style("top",0).style("left",0);var e=c[0][0].getScreenCTM();cb=!e.f&&!e.e,c.remove()}return cb?(d.x=b.pageX,d.y=b.pageY):(d.x=b.clientX,d.y=b.clientY),d=d.matrixTransform(a.getScreenCTM().inverse()),[d.x,d.y]}var f=a.getBoundingClientRect();return[b.clientX-f.left-a.clientLeft,b.clientY-f.top-a.clientTop]}function cd(){}function ce(a){var b=a[0],c=a[a.length-1];return b<c?[b,c]:[c,b]}function cf(a){return a.rangeExtent?a.rangeExtent():ce(a.range())}function cg(a,b){var c=0,d=a.length-1,e=a[c],f=a[d],g;f<e&&(g=c,c=d,d=g,g=e,e=f,f=g);if(g=f-e)b=b(g),a[c]=b.floor(e),a[d]=b.ceil(f);return a}function ch(){return Math}function ci(a,b,c,d){function g(){var g=Math.min(a.length,b.length)>2?cp:co,i=d?bc:bb;return e=g(a,b,i,c),f=g(b,a,i,d3.interpolate),h}function h(a){return e(a)}var e,f;return h.invert=function(a){return f(a)},h.domain=function(b){return arguments.length?(a=b.map(Number),g()):a},h.range=function(a){return arguments.length?(b=a,g()):b},h.rangeRound=function(a){return h.range(a).interpolate(d3.interpolateRound)},h.clamp=function(a){return arguments.length?(d=a,g()):d},h.interpolate=function(a){return arguments.length?(c=a,g()):c},h.ticks=function(b){return cm(a,b)},h.tickFormat=function(b){return cn(a,b)},h.nice=function(){return cg(a,ck),g()},h.copy=function(){return ci(a,b,c,d)},g()}function cj(a,b){return d3.rebind(a,b,"range","rangeRound","interpolate","clamp")}function ck(a){return a=Math.pow(10,Math.round(Math.log(a)/Math.LN10)-1),{floor:function(b){return Math.floor(b/a)*a},ceil:function(b){return Math.ceil(b/a)*a}}}function cl(a,b){var c=ce(a),d=c[1]-c[0],e=Math.pow(10,Math.floor(Math.log(d/b)/Math.LN10)),f=b/d*e;return f<=.15?e*=10:f<=.35?e*=5:f<=.75&&(e*=2),c[0]=Math.ceil(c[0]/e)*e,c[1]=Math.floor(c[1]/e)*e+e*.5,c[2]=e,c}function cm(a,b){return d3.range.apply(d3,cl(a,b))}function cn(a,b){return d3.format(",."+Math.max(0,-Math.floor(Math.log(cl(a,b)[2])/Math.LN10+.01))+"f")}function co(a,b,c,d){var e=c(a[0],a[1]),f=d(b[0],b[1]);return function(a){return f(e(a))}}function cp(a,b,c,d){var e=[],f=[],g=0,h=Math.min(a.length,b.length)-1;a[h]<a[0]&&(a=a.slice().reverse(),b=b.slice().reverse());while(++g<=h)e.push(c(a[g-1],a[g])),f.push(d(b[g-1],b[g]));return function(b){var c=d3.bisect(a,b,1,h)-1;return f[c](e[c](b))}}function cq(a,b){function d(c){return a(b(c))}var c=b.pow;return d.invert=function(b){return c(a.invert(b))},d.domain=function(e){return arguments.length?(b=e[0]<0?ct:cs,c=b.pow,a.domain(e.map(b)),d):a.domain().map(c)},d.nice=function(){return a.domain(cg(a.domain(),ch)),d},d.ticks=function(){var d=ce(a.domain()),e=[];if(d.every(isFinite)){var f=Math.floor(d[0]),g=Math.ceil(d[1]),h=c(d[0]),i=c(d[1]);if(b===ct){e.push(c(f));for(;f++<g;)for(var j=9;j>0;j--)e.push(c(f)*j)}else{for(;f<g;f++)for(var j=1;j<10;j++)e.push(c(f)*j);e.push(c(f))}for(f=0;e[f]<h;f++);for(g=e.length;e[g-1]>i;g--);e=e.slice(f,g)}return e},d.tickFormat=function(a,e){arguments.length<2&&(e=cr);if(arguments.length<1)return e;var f=Math.max(.1,a/d.ticks().length),g=b===ct?(h=-1e-12,Math.floor):(h=1e-12,Math.ceil),h;return function(a){return a/c(g(b(a)+h))<=f?e(a):""}},d.copy=function(){return cq(a.copy(),b)},cj(d,a)}function cs(a){return Math.log(a<0?0:a)/Math.LN10}function ct(a){return-Math.log(a>0?0:-a)/Math.LN10}function cu(a,b){function e(b){return a(c(b))}var c=cv(b),d=cv(1/b);return e.invert=function(b){return d(a.invert(b))},e.domain=function(b){return arguments.length?(a.domain(b.map(c)),e):a.domain().map(d)},e.ticks=function(a){return cm(e.domain(),a)},e.tickFormat=function(a){return cn(e.domain(),a)},e.nice=function(){return e.domain(cg(e.domain(),ck))},e.exponent=function(a){if(!arguments.length)return b;var f=e.domain();return c=cv(b=a),d=cv(1/b),e.domain(f)},e.copy=function(){return cu(a.copy(),b)},cj(e,a)}function cv(a){return function(b){return b<0?-Math.pow(-b,a):Math.pow(b,a)}}function cw(a,b){function f(b){return d[((c.get(b)||c.set(b,a.push(b)))-1)%d.length]}function g(b,c){return d3.range(a.length).map(function(a){return b+c*a})}var c,d,e;return f.domain=function(d){if(!arguments.length)return a;a=[],c=new j;var e=-1,g=d.length,h;while(++e<g)c.has(h=d[e])||c.set(h,a.push(h));return f[b.t](b.x,b.p)},f.range=function(a){return arguments.length?(d=a,e=0,b={t:"range",x:a},f):d},f.rangePoints=function(c,h){arguments.length<2&&(h=0);var i=c[0],j=c[1],k=(j-i)/(a.length-1+h);return d=g(a.length<2?(i+j)/2:i+k*h/2,k),e=0,b={t:"rangePoints",x:c,p:h},f},f.rangeBands=function(c,h){arguments.length<2&&(h=0);var i=c[1]<c[0],j=c[i-0],k=c[1-i],l=(k-j)/(a.length+h);return d=g(j+l*h,l),i&&d.reverse(),e=l*(1-h),b={t:"rangeBands",x:c,p:h},f},f.rangeRoundBands=function(c,h){arguments.length<2&&(h=0);var i=c[1]<c[0],j=c[i-0],k=c[1-i],l=Math.floor((k-j)/(a.length+h)),m=k-j-(a.length-h)*l;return d=g(j+Math.round(m/2),l),i&&d.reverse(),e=Math.round(l*(1-h)),b={t:"rangeRoundBands",x:c,p:h},f},f.rangeBand=function(){return e},f.rangeExtent=function(){return ce(b.x)},f.copy=function(){return cw(a,b)},f.domain(a)}function cB(a,b){function d(){var d=0,f=a.length,g=b.length;c=[];while(++d<g)c[d-1]=d3.quantile(a,d/g);return e}function e(a){return isNaN(a=+a)?NaN:b[d3.bisect(c,a)]}var c;return e.domain=function(b){return arguments.length?(a=b.filter(function(a){return!isNaN(a)}).sort(d3.ascending),d()):a},e.range=function(a){return arguments.length?(b=a,d()):b},e.quantiles=function(){return c},e.copy=function(){return cB(a,b)},d()}function cC(a,b,c){function f(b){return c[Math.max(0,Math.min(e,Math.floor(d*(b-a))))]}function g(){return d=c.length/(b-a),e=c.length-1,f}var d,e;return f.domain=function(c){return arguments.length?(a=+c[0],b=+c[c.length-1],g()):[a,b]},f.range=function(a){return arguments.length?(c=a,g()):c},f.copy=function(){return cC(a,b,c)},g()}function cD(a){function b(a){return+a}return b.invert=b,b.domain=b.range=function(c){return arguments.length?(a=c.map(b),b):a},b.ticks=function(b){return cm(a,b)},b.tickFormat=function(b){return cn(a,b)},b.copy=function(){return cD(a)},b}function cG(a){return a.innerRadius}function cH(a){return a.outerRadius}function cI(a){return a.startAngle}function cJ(a){return a.endAngle}function cK(a){function h(e){function o(){h.push("M",f(a(i),g))}var h=[],i=[],j=-1,k=e.length,l,m=p(b),n=p(c);while(++j<k)d.call(this,l=e[j],j)?i.push([+m.call(this,l,j),+n.call(this,l,j)]):i.length&&(o(),i=[]);return i.length&&o(),h.length?h.join(""):null}var b=cL,c=cM,d=o,e=cN,f=cP,g=.7;return h.x=function(a){return arguments.length?(b=a,h):b},h.y=function(a){return arguments.length?(c=a,h):c},h.defined=function(a){return arguments.length?(d=a,h):d},h.interpolate=function(a){return arguments.length?(cO.has(a+="")||(a=cN),f=cO.get(e=a),h):e},h.tension=function(a){return arguments.length?(g=a,h):g},h}function cL(a){return a[0]}function cM(a){return a[1]}function cP(a){var b=0,c=a.length,d=a[0],e=[d[0],",",d[1]];while(++b<c)e.push("L",(d=a[b])[0],",",d[1]);return e.join("")}function cQ(a){var b=0,c=a.length,d=a[0],e=[d[0],",",d[1]];while(++b<c)e.push("V",(d=a[b])[1],"H",d[0]);return e.join("")}function cR(a){var b=0,c=a.length,d=a[0],e=[d[0],",",d[1]];while(++b<c)e.push("H",(d=a[b])[0],"V",d[1]);return e.join("")}function cS(a,b){return a.length<4?cP(a):a[1]+cV(a.slice(1,a.length-1),cW(a,b))}function cT(a,b){return a.length<3?cP(a):a[0]+cV((a.push(a[0]),a),cW([a[a.length-2]].concat(a,[a[1]]),b))}function cU(a,b,c){return a.length<3?cP(a):a[0]+cV(a,cW(a,b))}function cV(a,b){if(b.length<1||a.length!=b.length&&a.length!=b.length+2)return cP(a);var c=a.length!=b.length,d="",e=a[0],f=a[1],g=b[0],h=g,i=1;c&&(d+="Q"+(f[0]-g[0]*2/3)+","+(f[1]-g[1]*2/3)+","+f[0]+","+f[1],e=a[1],i=2);if(b.length>1){h=b[1],f=a[i],i++,d+="C"+(e[0]+g[0])+","+(e[1]+g[1])+","+(f[0]-h[0])+","+(f[1]-h[1])+","+f[0]+","+f[1];for(var j=2;j<b.length;j++,i++)f=a[i],h=b[j],d+="S"+(f[0]-h[0])+","+(f[1]-h[1])+","+f[0]+","+f[1]}if(c){var k=a[i];d+="Q"+(f[0]+h[0]*2/3)+","+(f[1]+h[1]*2/3)+","+k[0]+","+k[1]}return d}function cW(a,b){var c=[],d=(1-b)/2,e,f=a[0],g=a[1],h=1,i=a.length;while(++h<i)e=f,f=g,g=a[h],c.push([d*(g[0]-e[0]),d*(g[1]-e[1])]);return c}function cX(a){if(a.length<3)return cP(a);var b=1,c=a.length,d=a[0],e=d[0],f=d[1],g=[e,e,e,(d=a[1])[0]],h=[f,f,f,d[1]],i=[e,",",f];dd(i,g,h);while(++b<c)d=a[b],g.shift(),g.push(d[0]),h.shift(),h.push(d[1]),dd(i,g,h);b=-1;while(++b<2)g.shift(),g.push(d[0]),h.shift(),h.push(d[1]),dd(i,g,h);return i.join("")}function cY(a){if(a.length<4)return cP(a);var b=[],c=-1,d=a.length,e,f=[0],g=[0];while(++c<3)e=a[c],f.push(e[0]),g.push(e[1]);b.push(c_(dc,f)+","+c_(dc,g)),--c;while(++c<d)e=a[c],f.shift(),f.push(e[0]),g.shift(),g.push(e[1]),dd(b,f,g);return b.join("")}function cZ(a){var b,c=-1,d=a.length,e=d+4,f,g=[],h=[];while(++c<4)f=a[c%d],g.push(f[0]),h.push(f[1]);b=[c_(dc,g),",",c_(dc,h)],--c;while(++c<e)f=a[c%d],g.shift(),g.push(f[0]),h.shift(),h.push(f[1]),dd(b,g,h);return b.join("")}function c$(a,b){var c=a.length-1;if(c){var d=a[0][0],e=a[0][1],f=a[c][0]-d,g=a[c][1]-e,h=-1,i,j;while(++h<=c)i=a[h],j=h/c,i[0]=b*i[0]+(1-b)*(d+j*f),i[1]=b*i[1]+(1-b)*(e+j*g)}return cX(a)}function c_(a,b){return a[0]*b[0]+a[1]*b[1]+a[2]*b[2]+a[3]*b[3]}function dd(a,b,c){a.push("C",c_(da,b),",",c_(da,c),",",c_(db,b),",",c_(db,c),",",c_(dc,b),",",c_(dc,c))}function de(a,b){return(b[1]-a[1])/(b[0]-a[0])}function df(a){var b=0,c=a.length-1,d=[],e=a[0],f=a[1],g=d[0]=de(e,f);while(++b<c)d[b]=g+(g=de(e=f,f=a[b+1]));return d[b]=g,d}function dg(a){var b=[],c,d,e,f,g=df(a),h=-1,i=a.length-1;while(++h<i)c=de(a[h],a[h+1]),Math.abs(c)<1e-6?g[h]=g[h+1]=0:(d=g[h]/c,e=g[h+1]/c,f=d*d+e*e,f>9&&(f=c*3/Math.sqrt(f),g[h]=f*d,g[h+1]=f*e));h=-1;while(++h<=i)f=(a[Math.min(i,h+1)][0]-a[Math.max(0,h-1)][0])/(6*(1+g[h]*g[h])),b.push([f||0,g[h]*f||0]);return b}function dh(a){return a.length<3?cP(a):a[0]+cV(a,dg(a))}function di(a){var b,c=-1,d=a.length,e,f;while(++c<d)b=a[c],e=b[0],f=b[1]+cE,b[0]=e*Math.cos(f),b[1]=e*Math.sin(f);return a}function dj(a){function l(g){function y(){l.push("M",h(a(n),k),j,i(a(m.reverse()),k),"Z")}var l=[],m=[],n=[],o=-1,q=g.length,r,s=p(b),t=p(d),u=b===c?function(){return w}:p(c),v=d===e?function(){return x}:p(e),w,x;while(++o<q)f.call(this,r=g[o],o)?(m.push([w=+s.call(this,r,o),x=+t.call(this,r,o)]),n.push([+u.call(this,r,o),+v.call(this,r,o)])):m.length&&(y(),m=[],n=[]);return m.length&&y(),l.length?l.join(""):null}var b=cL,c=cL,d=0,e=cM,f=o,g=cN,h=cP,i=cP,j="L",k=.7;return l.x=function(a){return arguments.length?(b=c=a,l):c},l.x0=function(a){return arguments.length?(b=a,l):b},l.x1=function(a){return arguments.length?(c=a,l):c},l.y=function(a){return arguments.length?(d=e=a,l):e},l.y0=function(a){return arguments.length?(d=a,l):d},l.y1=function(a){return arguments.length?(e=a,l):e},l.defined=function(a){return arguments.length?(f=a,l):f},l.interpolate=function(a){return arguments.length?(cO.has(a+="")||(a=cN),h=cO.get(g=a),i=h.reverse||h,j=/-closed$/.test(a)?"M":"L",l):g},l.tension=function(a){return arguments.length?(k=a,l):k},l}function dk(a){return a.source}function dl(a){return a.target}function dm(a){return a.radius}function dn(a){return a.startAngle}function dp(a){return a.endAngle}function dq(a){return[a.x,a.y]}function dr(a){return function(){var b=a.apply(this,arguments),c=b[0],d=b[1]+cE;return[c*Math.cos(d),c*Math.sin(d)]}}function ds(){return 64}function dt(){return"circle"}function du(a){var b=Math.sqrt(a/Math.PI);return"M0,"+b+"A"+b+","+b+" 0 1,1 0,"+ -b+"A"+b+","+b+" 0 1,1 0,"+b+"Z"}function dy(a,b){a.attr("transform",function(a){return"translate("+b(a)+",0)"})}function dz(a,b){a.attr("transform",function(a){return"translate(0,"+b(a)+")"})}function dA(a,b,c){e=[];if(c&&b.length>1){var d=ce(a.domain()),e,f=-1,g=b.length,h=(b[1]-b[0])/++c,i,j;while(++f<g)for(i=c;--i>0;)(j=+b[f]-i*h)>=d[0]&&e.push(j);for(--f,i=0;++i<c&&(j=+b[f]+i*h)<d[1];)e.push(j)}return e}function dF(){dD||(dD=d3.select("body").append("div").style("visibility","hidden").style("top",0).style("height",0).style("width",0).style("overflow-y","scroll").append("div").style("height","2000px").node().parentNode);var a=d3.event,b;try{dD.scrollTop=1e3,dD.dispatchEvent(a),b=1e3-dD.scrollTop}catch(c){b=a.wheelDelta||-a.detail*5}return b}function dG(a){var b=a.source,c=a.target,d=dI(b,c),e=[b];while(b!==d)b=b.parent,e.push(b);var f=e.length;while(c!==d)e.splice(f,0,c),c=c.parent;return e}function dH(a){var b=[],c=a.parent;while(c!=null)b.push(a),a=c,c=c.parent;return b.push(a),b}function dI(a,b){if(a===b)return a;var c=dH(a),d=dH(b),e=c.pop(),f=d.pop(),g=null;while(e===f)g=e,e=c.pop(),f=d.pop();return g}function dL(a){a.fixed|=2}function dM(a){a!==dK&&(a.fixed&=1)}function dN(){dK.fixed&=1,dJ=dK=null}function dO(){dK.px=d3.event.x,dK.py=d3.event.y,dJ.resume()}function dP(a,b,c){var d=0,e=0;a.charge=0;if(!a.leaf){var f=a.nodes,g=f.length,h=-1,i;while(++h<g){i=f[h];if(i==null)continue;dP(i,b,c),a.charge+=i.charge,d+=i.charge*i.cx,e+=i.charge*i.cy}}if(a.point){a.leaf||(a.point.x+=Math.random()-.5,a.point.y+=Math.random()-.5);var j=b*c[a.point.index];a.charge+=a.pointCharge=j,d+=j*a.point.x,e+=j*a.point.y}a.cx=d/a.charge,a.cy=e/a.charge}function dQ(a){return 20}function dR(a){return 1}function dT(a){return a.x}function dU(a){return a.y}function dV(a,b,c){a.y0=b,a.y=c}function dY(a){return d3.range(a.length)}function dZ(a){var b=-1,c=a[0].length,d=[];while(++b<c)d[b]=0;return d}function d$(a){var b=1,c=0,d=a[0][1],e,f=a.length;for(;b<f;++b)(e=a[b][1])>d&&(c=b,d=e);return c}function d_(a){return a.reduce(ea,0)}function ea(a,b){return a+b[1]}function eb(a,b){return ec(a,Math.ceil(Math.log(b.length)/Math.LN2+1))}function ec(a,b){var c=-1,d=+a[0],e=(a[1]-d)/b,f=[];while(++c<=b)f[c]=e*c+d;return f}function ed(a){return[d3.min(a),d3.max(a)]}function ee(a,b){return d3.rebind(a,b,"sort","children","value"),a.links=ei,a.nodes=function(b){return ej=!0,(a.nodes=a)(b)},a}function ef(a){return a.children}function eg(a){return a.value}function eh(a,b){return b.value-a.value}function ei(a){return d3.merge(a.map(function(a){return(a.children||[]).map(function(b){return{source:a,target:b}})}))}function ek(a,b){return a.value-b.value}function el(a,b){var c=a._pack_next;a._pack_next=b,b._pack_prev=a,b._pack_next=c,c._pack_prev=b}function em(a,b){a._pack_next=b,b._pack_prev=a}function en(a,b){var c=b.x-a.x,d=b.y-a.y,e=a.r+b.r;return e*e-c*c-d*d>.001}function eo(a){function l(a){b=Math.min(a.x-a.r,b),c=Math.max(a.x+a.r,c),d=Math.min(a.y-a.r,d),e=Math.max(a.y+a.r,e)}var b=Infinity,c=-Infinity,d=Infinity,e=-Infinity,f=a.length,g,h,i,j,k;a.forEach(ep),g=a[0],g.x=-g.r,g.y=0,l(g);if(f>1){h=a[1],h.x=h.r,h.y=0,l(h);if(f>2){i=a[2],et(g,h,i),l(i),el(g,i),g._pack_prev=i,el(i,h),h=g._pack_next;for(var m=3;m<f;m++){et(g,h,i=a[m]);var n=0,o=1,p=1;for(j=h._pack_next;j!==h;j=j._pack_next,o++)if(en(j,i)){n=1;break}if(n==1)for(k=g._pack_prev;k!==j._pack_prev;k=k._pack_prev,p++)if(en(k,i))break;n?(o<p||o==p&&h.r<g.r?em(g,h=j):em(g=k,h),m--):(el(g,i),h=i,l(i))}}}var q=(b+c)/2,r=(d+e)/2,s=0;for(var m=0;m<f;m++){var t=a[m];t.x-=q,t.y-=r,s=Math.max(s,t.r+Math.sqrt(t.x*t.x+t.y*t.y))}return a.forEach(eq),s}function ep(a){a._pack_next=a._pack_prev=a}function eq(a){delete a._pack_next,delete a._pack_prev}function er(a){var b=a.children;b&&b.length?(b.forEach(er),a.r=eo(b)):a.r=Math.sqrt(a.value)}function es(a,b,c,d){var e=a.children;a.x=b+=d*a.x,a.y=c+=d*a.y,a.r*=d;if(e){var f=-1,g=e.length;while(++f<g)es(e[f],b,c,d)}}function et(a,b,c){var d=a.r+c.r,e=b.x-a.x,f=b.y-a.y;if(d&&(e||f)){var g=b.r+c.r,h=Math.sqrt(e*e+f*f),i=Math.max(-1,Math.min(1,(d*d+h*h-g*g)/(2*d*h))),j=Math.acos(i),k=i*(d/=h),l=Math.sin(j)*d;c.x=a.x+k*e+l*f,c.y=a.y+k*f-l*e}else c.x=a.x+d,c.y=a.y}function eu(a){return 1+d3.max(a,function(a){return a.y})}function ev(a){return a.reduce(function(a,b){return a+b.x},0)/a.length}function ew(a){var b=a.children;return b&&b.length?ew(b[0]):a}function ex(a){var b=a.children,c;return b&&(c=b.length)?ex(b[c-1]):a}function ey(a,b){return a.parent==b.parent?1:2}function ez(a){var b=a.children;return b&&b.length?b[0]:a._tree.thread}function eA(a){var b=a.children,c;return b&&(c=b.length)?b[c-1]:a._tree.thread}function eB(a,b){var c=a.children;if(c&&(e=c.length)){var d,e,f=-1;while(++f<e)b(d=eB(c[f],b),a)>0&&(a=d)}return a}function eC(a,b){return a.x-b.x}function eD(a,b){return b.x-a.x}function eE(a,b){return a.depth-b.depth}function eF(a,b){function c(a,d){var e=a.children;if(e&&(i=e.length)){var f,g=null,h=-1,i;while(++h<i)f=e[h],c(f,g),g=f}b(a,d)}c(a,null)}function eG(a){var b=0,c=0,d=a.children,e=d.length,f;while(--e>=0)f=d[e]._tree,f.prelim+=b,f.mod+=b,b+=f.shift+(c+=f.change)}function eH(a,b,c){a=a._tree,b=b._tree;var d=c/(b.number-a.number);a.change+=d,b.change-=d,b.shift+=c,b.prelim+=c,b.mod+=c}function eI(a,b,c){return a._tree.ancestor.parent==b.parent?a._tree.ancestor:c}function eJ(a){return{x:a.x,y:a.y,dx:a.dx,dy:a.dy}}function eK(a,b){var c=a.x+b[3],d=a.y+b[0],e=a.dx-b[1]-b[3],f=a.dy-b[0]-b[2];return e<0&&(c+=e/2,e=0),f<0&&(d+=f/2,f=0),{x:c,y:d,dx:e,dy:f}}function eL(a){return a.map(eM).join(",")}function eM(a){return/[",\n]/.test(a)?'"'+a.replace(/\"/g,'""')+'"':a}function eO(a,b){return function(c){return c&&a.hasOwnProperty(c.type)?a[c.type](c):b}}function eP(a){return"m0,"+a+"a"+a+","+a+" 0 1,1 0,"+ -2*a+"a"+a+","+a+" 0 1,1 0,"+2*a+"z"}function eQ(a,b){eR.hasOwnProperty(a.type)&&eR[a.type](a,b)}function eS(a,b){eQ(a.geometry,b)}function eT(a,b){for(var c=a.features,d=0,e=c.length;d<e;d++)eQ(c[d].geometry,b)}function eU(a,b){for(var c=a.geometries,d=0,e=c.length;d<e;d++)eQ(c[d],b)}function eV(a,b){for(var c=a.coordinates,d=0,e=c.length;d<e;d++)b.apply(null,c[d])}function eW(a,b){for(var c=a.coordinates,d=0,e=c.length;d<e;d++)for(var f=c[d],g=0,h=f.length;g<h;g++)b.apply(null,f[g])}function eX(a,b){for(var c=a.coordinates,d=0,e=c.length;d<e;d++)for(var f=c[d][0],g=0,h=f.length;g<h;g++)b.apply(null,f[g])}function eY(a,b){b.apply(null,a.coordinates)}function eZ(a,b){for(var c=a.coordinates[0],d=0,e=c.length;d<e;d++)b.apply(null,c[d])}function e$(a){return a.source}function e_(a){return a.target}function fa(){function o(a){var b=Math.sin(a*=m)*n,c=Math.sin(m-a)*n,g=c*e+b*k,h=c*f+b*l,i=c*d+b*j;return[Math.atan2(h,g)/eN,Math.atan2(i,Math.sqrt(g*g+h*h))/eN]}var a,b,c,d,e,f,g,h,i,j,k,l,m,n;return o.distance=function(){return m==null&&(n=1/Math.sin(m=Math.acos(Math.max(-1,Math.min(1,d*j+c*i*Math.cos(g-a)))))),m},o.source=function(g){var h=Math.cos(a=g[0]*eN),i=Math.sin(a);return c=Math.cos(b=g[1]*eN),d=Math.sin(b),e=c*h,f=c*i,m=null,o},o.target=function(a){var b=Math.cos(g=a[0]*eN),c=Math.sin(g);return i=Math.cos(h=a[1]*eN),j=Math.sin(h),k=i*b,l=i*c,m=null,o},o}function fb(a,b){var c=fa().source(a).target(b);return c.distance(),c}function fe(a){var b=0,c=0;for(;;){if(a(b,c))return[b,c];b===0?(b=c+1,c=0):(b-=1,c+=1)}}function ff(a,b,c,d){var e,f,g,h,i,j,k;return e=d[a],f=e[0],g=e[1],e=d[b],h=e[0],i=e[1],e=d[c],j=e[0],k=e[1],(k-g)*(h-f)-(i-g)*(j-f)>0}function fg(a,b,c){return(c[0]-b[0])*(a[1]-b[1])<(c[1]-b[1])*(a[0]-b[0])}function fh(a,b,c,d){var e=a[0],f=b[0],g=c[0],h=d[0],i=a[1],j=b[1],k=c[1],l=d[1],m=e-g,n=f-e,o=h-g,p=i-k,q=j-i,r=l-k,s=(o*p-r*m)/(r*n-o*q);return[e+s*n,i+s*q]}function fj(a,b){var c={list:a.map(function(a,b){return{index:b,x:a[0],y:a[1]}}).sort(function(a,b){return a.y<b.y?-1:a.y>b.y?1:a.x<b.x?-1:a.x>b.x?1:0}),bottomSite:null},d={list:[],leftEnd:null,rightEnd:null,init:function(){d.leftEnd=d.createHalfEdge(null,"l"),d.rightEnd=d.createHalfEdge(null,"l"),d.leftEnd.r=d.rightEnd,d.rightEnd.l=d.leftEnd,d.list.unshift(d.leftEnd,d.rightEnd)},createHalfEdge:function(a,b){return{edge:a,side:b,vertex:null,l:null,r:null}},insert:function(a,b){b.l=a,b.r=a.r,a.r.l=b,a.r=b},leftBound:function(a){var b=d.leftEnd;do b=b.r;while(b!=d.rightEnd&&e.rightOf(b,a));return b=b.l,b},del:function(a){a.l.r=a.r,a.r.l=a.l,a.edge=null},right:function(a){return a.r},left:function(a){return a.l},leftRegion:function(a){return a.edge==null?c.bottomSite:a.edge.region[a.side]},rightRegion:function(a){return a.edge==null?c.bottomSite:a.edge.region[fi[a.side]]}},e={bisect:function(a,b){var c={region:{l:a,r:b},ep:{l:null,r:null}},d=b.x-a.x,e=b.y-a.y,f=d>0?d:-d,g=e>0?e:-e;return c.c=a.x*d+a.y*e+(d*d+e*e)*.5,f>g?(c.a=1,c.b=e/d,c.c/=d):(c.b=1,c.a=d/e,c.c/=e),c},intersect:function(a,b){var c=a.edge,d=b.edge;if(!c||!d||c.region.r==d.region.r)return null;var e=c.a*d.b-c.b*d.a;if(Math.abs(e)<1e-10)return null;var f=(c.c*d.b-d.c*c.b)/e,g=(d.c*c.a-c.c*d.a)/e,h=c.region.r,i=d.region.r,j,k;h.y<i.y||h.y==i.y&&h.x<i.x?(j=a,k=c):(j=b,k=d);var l=f>=k.region.r.x;return l&&j.side==="l"||!l&&j.side==="r"?null:{x:f,y:g}},rightOf:function(a,b){var c=a.edge,d=c.region.r,e=b.x>d.x;if(e&&a.side==="l")return 1;if(!e&&a.side==="r")return 0;if(c.a===1){var f=b.y-d.y,g=b.x-d.x,h=0,i=0;!e&&c.b<0||e&&c.b>=0?i=h=f>=c.b*g:(i=b.x+b.y*c.b>c.c,c.b<0&&(i=!i),i||(h=1));if(!h){var j=d.x-c.region.l.x;i=c.b*(g*g-f*f)<j*f*(1+2*g/j+c.b*c.b),c.b<0&&(i=!i)}}else{var k=c.c-c.a*b.x,l=b.y-k,m=b.x-d.x,n=k-d.y;i=l*l>m*m+n*n}return a.side==="l"?i:!i},endPoint:function(a,c,d){a.ep[c]=d;if(!a.ep[fi[c]])return;b(a)},distance:function(a,b){var c=a.x-b.x,d=a.y-b.y;return Math.sqrt(c*c+d*d)}},f={list:[],insert:function(a,b,c){a.vertex=b,a.ystar=b.y+c;for(var d=0,e=f.list,g=e.length;d<g;d++){var h=e[d];if(a.ystar>h.ystar||a.ystar==h.ystar&&b.x>h.vertex.x)continue;break}e.splice(d,0,a)},del:function(a){for(var b=0,c=f.list,d=c.length;b<d&&c[b]!=a;++b);c.splice(b,1)},empty:function(){return f.list.length===0},nextEvent:function(a){for(var b=0,c=f.list,d=c.length;b<d;++b)if(c[b]==a)return c[b+1];return null},min:function(){var a=f.list[0];return{x:a.vertex.x,y:a.ystar}},extractMin:function(){return f.list.shift()}};d.init(),c.bottomSite=c.list.shift();var g=c.list.shift(),h,i,j,k,l,m,n,o,p,q,r,s,t;for(;;){f.empty()||(h=f.min());if(g&&(f.empty()||g.y<h.y||g.y==h.y&&g.x<h.x))i=d.leftBound(g),j=d.right(i),n=d.rightRegion(i),s=e.bisect(n,g),m=d.createHalfEdge(s,"l"),d.insert(i,m),q=e.intersect(i,m),q&&(f.del(i),f.insert(i,q,e.distance(q,g))),i=m,m=d.createHalfEdge(s,"r"),d.insert(i,m),q=e.intersect(m,j),q&&f.insert(m,q,e.distance(q,g)),g=c.list.shift();else if(!f.empty())i=f.extractMin(),k=d.left(i),j=d.right(i),l=d.right(j),n=d.leftRegion(i),o=d.rightRegion(j),r=i.vertex,e.endPoint(i.edge,i.side,r),e.endPoint(j.edge,j.side,r),d.del(i),f.del(j),d.del(j),t="l",n.y>o.y&&(p=n,n=o,o=p,t="r"),s=e.bisect(n,o),m=d.createHalfEdge(s,t),d.insert(k,m),e.endPoint(s,fi[t],r),q=e.intersect(k,m),q&&(f.del(k),f.insert(k,q,e.distance(q,n))),q=e.intersect(m,l),q&&f.insert(m,q,e.distance(q,n));else break}for(i=d.right(d.leftEnd);i!=d.rightEnd;i=d.right(i))b(i.edge)}function fk(){return{leaf:!0,nodes:[],point:null}}function fl(a,b,c,d,e,f){if(!a(b,c,d,e,f)){var g=(c+e)*.5,h=(d+f)*.5,i=b.nodes;i[0]&&fl(a,i[0],c,d,g,h),i[1]&&fl(a,i[1],g,d,e,h),i[2]&&fl(a,i[2],c,h,g,f),i[3]&&fl(a,i[3],g,h,e,f)}}function fm(a){return{x:a[0],y:a[1]}}function fo(){this._=new Date(arguments.length>1?Date.UTC.apply(this,arguments):arguments[0])}function fq(a,b,c,d){var e,f,g=0,h=b.length,i=c.length;while(g<h){if(d>=i)return-1;e=b.charCodeAt(g++);if(e==37){f=fw[b.charAt(g++)];if(!f||(d=f(a,c,d))<0)return-1}else if(e!=c.charCodeAt(d++))return-1}return d}function fx(a,b,c){return fz.test(b.substring(c,c+=3))?c:-1}function fy(a,b,c){fA.lastIndex=0;var d=fA.exec(b.substring(c,c+10));return d?c+=d[0].length:-1}function fC(a,b,c){var d=fD.get(b.substring(c,c+=3).toLowerCase());return d==null?-1:(a.m=d,c)}function fE(a,b,c){fF.lastIndex=0;var d=fF.exec(b.substring(c,c+12));return d?(a.m=fG.get(d[0].toLowerCase()),c+=d[0].length):-1}function fI(a,b,c){return fq(a,fv.c.toString(),b,c)}function fJ(a,b,c){return fq(a,fv.x.toString(),b,c)}function fK(a,b,c){return fq(a,fv.X.toString(),b,c)}function fL(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+4));return d?(a.y=+d[0],c+=d[0].length):-1}function fM(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+2));return d?(a.y=fN()+ +d[0],c+=d[0].length):-1}function fN(){return~~((new Date).getFullYear()/1e3)*1e3}function fO(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+2));return d?(a.m=d[0]-1,c+=d[0].length):-1}function fP(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+2));return d?(a.d=+d[0],c+=d[0].length):-1}function fQ(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+2));return d?(a.H=+d[0],c+=d[0].length):-1}function fR(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+2));return d?(a.M=+d[0],c+=d[0].length):-1}function fS(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+2));return d?(a.S=+d[0],c+=d[0].length):-1}function fT(a,b,c){fU.lastIndex=0;var d=fU.exec(b.substring(c,c+3));return d?(a.L=+d[0],c+=d[0].length):-1}function fV(a,b,c){var d=fW.get(b.substring(c,c+=2).toLowerCase());return d==null?-1:(a.p=d,c)}function fX(a){var b=a.getTimezoneOffset(),c=b>0?"-":"+",d=~~(Math.abs(b)/60),e=Math.abs(b)%60;return c+fr(d)+fr(e)}function fZ(a){return a.toISOString()}function f$(a,b,c){function d(b){var c=a(b),d=f(c,1);return b-c<d-b?c:d}function e(c){return b(c=a(new fn(c-1)),1),c}function f(a,c){return b(a=new fn(+a),c),a}function g(a,d,f){var g=e(a),h=[];if(f>1)while(g<d)c(g)%f||h.push(new Date(+g)),b(g,1);else while(g<d)h.push(new Date(+g)),b(g,1);return h}function h(a,b,c){try{
+fn=fo;var d=new fo;return d._=a,g(d,b,c)}finally{fn=Date}}a.floor=a,a.round=d,a.ceil=e,a.offset=f,a.range=g;var i=a.utc=f_(a);return i.floor=i,i.round=f_(d),i.ceil=f_(e),i.offset=f_(f),i.range=h,a}function f_(a){return function(b,c){try{fn=fo;var d=new fo;return d._=b,a(d,c)._}finally{fn=Date}}}function ga(a,b,c){function d(b){return a(b)}return d.invert=function(b){return gc(a.invert(b))},d.domain=function(b){return arguments.length?(a.domain(b),d):a.domain().map(gc)},d.nice=function(a){var b=gb(d.domain());return d.domain([a.floor(b[0]),a.ceil(b[1])])},d.ticks=function(c,e){var f=gb(d.domain());if(typeof c!="function"){var g=f[1]-f[0],h=g/c,i=d3.bisect(gg,h);if(i==gg.length)return b.year(f,c);if(!i)return a.ticks(c).map(gc);Math.log(h/gg[i-1])<Math.log(gg[i]/h)&&--i,c=b[i],e=c[1],c=c[0].range}return c(f[0],new Date(+f[1]+1),e)},d.tickFormat=function(){return c},d.copy=function(){return ga(a.copy(),b,c)},d3.rebind(d,a,"range","rangeRound","interpolate","clamp")}function gb(a){var b=a[0],c=a[a.length-1];return b<c?[b,c]:[c,b]}function gc(a){return new Date(a)}function gd(a){return function(b){var c=a.length-1,d=a[c];while(!d[1](b))d=a[--c];return d[0](b)}}function ge(a){var b=new Date(a,0,1);return b.setFullYear(a),b}function gf(a){var b=a.getFullYear(),c=ge(b),d=ge(b+1);return b+(a-c)/(d-c)}function go(a){var b=new Date(Date.UTC(a,0,1));return b.setUTCFullYear(a),b}function gp(a){var b=a.getUTCFullYear(),c=go(b),d=go(b+1);return b+(a-c)/(d-c)}Date.now||(Date.now=function(){return+(new Date)});try{document.createElement("div").style.setProperty("opacity",0,"")}catch(a){var b=CSSStyleDeclaration.prototype,c=b.setProperty;b.setProperty=function(a,b,d){c.call(this,a,b+"",d)}}d3={version:"2.9.6"};var e=g;try{e(document.documentElement.childNodes)[0].nodeType}catch(h){e=f}var i=[].__proto__?function(a,b){a.__proto__=b}:function(a,b){for(var c in b)a[c]=b[c]};d3.map=function(a){var b=new j;for(var c in a)b.set(c,a[c]);return b},d(j,{has:function(a){return k+a in this},get:function(a){return this[k+a]},set:function(a,b){return this[k+a]=b},remove:function(a){return a=k+a,a in this&&delete this[a]},keys:function(){var a=[];return this.forEach(function(b){a.push(b)}),a},values:function(){var a=[];return this.forEach(function(b,c){a.push(c)}),a},entries:function(){var a=[];return this.forEach(function(b,c){a.push({key:b,value:c})}),a},forEach:function(a){for(var b in this)b.charCodeAt(0)===l&&a.call(this,b.substring(1),this[b])}});var k="\0",l=k.charCodeAt(0);d3.functor=p,d3.rebind=function(a,b){var c=1,d=arguments.length,e;while(++c<d)a[e=arguments[c]]=q(a,b,b[e]);return a},d3.ascending=function(a,b){return a<b?-1:a>b?1:a>=b?0:NaN},d3.descending=function(a,b){return b<a?-1:b>a?1:b>=a?0:NaN},d3.mean=function(a,b){var c=a.length,d,e=0,f=-1,g=0;if(arguments.length===1)while(++f<c)r(d=a[f])&&(e+=(d-e)/++g);else while(++f<c)r(d=b.call(a,a[f],f))&&(e+=(d-e)/++g);return g?e:undefined},d3.median=function(a,b){return arguments.length>1&&(a=a.map(b)),a=a.filter(r),a.length?d3.quantile(a.sort(d3.ascending),.5):undefined},d3.min=function(a,b){var c=-1,d=a.length,e,f;if(arguments.length===1){while(++c<d&&((e=a[c])==null||e!=e))e=undefined;while(++c<d)(f=a[c])!=null&&e>f&&(e=f)}else{while(++c<d&&((e=b.call(a,a[c],c))==null||e!=e))e=undefined;while(++c<d)(f=b.call(a,a[c],c))!=null&&e>f&&(e=f)}return e},d3.max=function(a,b){var c=-1,d=a.length,e,f;if(arguments.length===1){while(++c<d&&((e=a[c])==null||e!=e))e=undefined;while(++c<d)(f=a[c])!=null&&f>e&&(e=f)}else{while(++c<d&&((e=b.call(a,a[c],c))==null||e!=e))e=undefined;while(++c<d)(f=b.call(a,a[c],c))!=null&&f>e&&(e=f)}return e},d3.extent=function(a,b){var c=-1,d=a.length,e,f,g;if(arguments.length===1){while(++c<d&&((e=g=a[c])==null||e!=e))e=g=undefined;while(++c<d)(f=a[c])!=null&&(e>f&&(e=f),g<f&&(g=f))}else{while(++c<d&&((e=g=b.call(a,a[c],c))==null||e!=e))e=undefined;while(++c<d)(f=b.call(a,a[c],c))!=null&&(e>f&&(e=f),g<f&&(g=f))}return[e,g]},d3.random={normal:function(a,b){return arguments.length<2&&(b=1),arguments.length<1&&(a=0),function(){var c,d,e;do c=Math.random()*2-1,d=Math.random()*2-1,e=c*c+d*d;while(!e||e>1);return a+b*c*Math.sqrt(-2*Math.log(e)/e)}}},d3.sum=function(a,b){var c=0,d=a.length,e,f=-1;if(arguments.length===1)while(++f<d)isNaN(e=+a[f])||(c+=e);else while(++f<d)isNaN(e=+b.call(a,a[f],f))||(c+=e);return c},d3.quantile=function(a,b){var c=(a.length-1)*b+1,d=Math.floor(c),e=a[d-1],f=c-d;return f?e+f*(a[d]-e):e},d3.transpose=function(a){return d3.zip.apply(d3,a)},d3.zip=function(){if(!(e=arguments.length))return[];for(var a=-1,b=d3.min(arguments,s),c=new Array(b);++a<b;)for(var d=-1,e,f=c[a]=new Array(e);++d<e;)f[d]=arguments[d][a];return c},d3.bisector=function(a){return{left:function(b,c,d,e){arguments.length<3&&(d=0),arguments.length<4&&(e=b.length);while(d<e){var f=d+e>>1;a.call(b,b[f],f)<c?d=f+1:e=f}return d},right:function(b,c,d,e){arguments.length<3&&(d=0),arguments.length<4&&(e=b.length);while(d<e){var f=d+e>>1;c<a.call(b,b[f],f)?e=f:d=f+1}return d}}};var t=d3.bisector(function(a){return a});d3.bisectLeft=t.left,d3.bisect=d3.bisectRight=t.right,d3.first=function(a,b){var c=0,d=a.length,e=a[0],f;arguments.length===1&&(b=d3.ascending);while(++c<d)b.call(a,e,f=a[c])>0&&(e=f);return e},d3.last=function(a,b){var c=0,d=a.length,e=a[0],f;arguments.length===1&&(b=d3.ascending);while(++c<d)b.call(a,e,f=a[c])<=0&&(e=f);return e},d3.nest=function(){function f(c,g){if(g>=b.length)return e?e.call(a,c):d?c.sort(d):c;var h=-1,i=c.length,k=b[g++],l,m,n=new j,o,p={};while(++h<i)(o=n.get(l=k(m=c[h])))?o.push(m):n.set(l,[m]);return n.forEach(function(a){p[a]=f(n.get(a),g)}),p}function g(a,d){if(d>=b.length)return a;var e=[],f=c[d++],h;for(h in a)e.push({key:h,values:g(a[h],d)});return f&&e.sort(function(a,b){return f(a.key,b.key)}),e}var a={},b=[],c=[],d,e;return a.map=function(a){return f(a,0)},a.entries=function(a){return g(f(a,0),0)},a.key=function(c){return b.push(c),a},a.sortKeys=function(d){return c[b.length-1]=d,a},a.sortValues=function(b){return d=b,a},a.rollup=function(b){return e=b,a},a},d3.keys=function(a){var b=[];for(var c in a)b.push(c);return b},d3.values=function(a){var b=[];for(var c in a)b.push(a[c]);return b},d3.entries=function(a){var b=[];for(var c in a)b.push({key:c,value:a[c]});return b},d3.permute=function(a,b){var c=[],d=-1,e=b.length;while(++d<e)c[d]=a[b[d]];return c},d3.merge=function(a){return Array.prototype.concat.apply([],a)},d3.split=function(a,b){var c=[],d=[],e,f=-1,g=a.length;arguments.length<2&&(b=u);while(++f<g)b.call(d,e=a[f],f)?d=[]:(d.length||c.push(d),d.push(e));return c},d3.range=function(a,b,c){arguments.length<3&&(c=1,arguments.length<2&&(b=a,a=0));if((b-a)/c===Infinity)throw new Error("infinite range");var d=[],e=w(Math.abs(c)),f=-1,g;a*=e,b*=e,c*=e;if(c<0)while((g=a+c*++f)>b)d.push(g/e);else while((g=a+c*++f)<b)d.push(g/e);return d},d3.requote=function(a){return a.replace(x,"\\$&")};var x=/[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;d3.round=function(a,b){return b?Math.round(a*(b=Math.pow(10,b)))/b:Math.round(a)},d3.xhr=function(a,b,c){var d=new XMLHttpRequest;arguments.length<3?(c=b,b=null):b&&d.overrideMimeType&&d.overrideMimeType(b),d.open("GET",a,!0),b&&d.setRequestHeader("Accept",b),d.onreadystatechange=function(){if(d.readyState===4){var a=d.status;c(!a&&d.response||a>=200&&a<300||a===304?d:null)}},d.send(null)},d3.text=function(a,b,c){function d(a){c(a&&a.responseText)}arguments.length<3&&(c=b,b=null),d3.xhr(a,b,d)},d3.json=function(a,b){d3.text(a,"application/json",function(a){b(a?JSON.parse(a):null)})},d3.html=function(a,b){d3.text(a,"text/html",function(a){if(a!=null){var c=document.createRange();c.selectNode(document.body),a=c.createContextualFragment(a)}b(a)})},d3.xml=function(a,b,c){function d(a){c(a&&a.responseXML)}arguments.length<3&&(c=b,b=null),d3.xhr(a,b,d)};var y={svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml",xlink:"http://www.w3.org/1999/xlink",xml:"http://www.w3.org/XML/1998/namespace",xmlns:"http://www.w3.org/2000/xmlns/"};d3.ns={prefix:y,qualify:function(a){var b=a.indexOf(":"),c=a;return b>=0&&(c=a.substring(0,b),a=a.substring(b+1)),y.hasOwnProperty(c)?{space:y[c],local:a}:a}},d3.dispatch=function(){var a=new z,b=-1,c=arguments.length;while(++b<c)a[arguments[b]]=A(a);return a},z.prototype.on=function(a,b){var c=a.indexOf("."),d="";return c>0&&(d=a.substring(c+1),a=a.substring(0,c)),arguments.length<2?this[a].on(d):this[a].on(d,b)},d3.format=function(a){var b=B.exec(a),c=b[1]||" ",d=b[3]||"",e=b[5],f=+b[6],g=b[7],h=b[8],i=b[9],j=1,k="",l=!1;h&&(h=+h.substring(1)),e&&(c="0",g&&(f-=Math.floor((f-1)/4)));switch(i){case"n":g=!0,i="g";break;case"%":j=100,k="%",i="f";break;case"p":j=100,k="%",i="r";break;case"d":l=!0,h=0;break;case"s":j=-1,i="r"}return i=="r"&&!h&&(i="g"),i=C.get(i)||E,function(a){if(l&&a%1)return"";var b=a<0&&(a=-a)?"−":d;if(j<0){var m=d3.formatPrefix(a,h);a=m.scale(a),k=m.symbol}else a*=j;a=i(a,h);if(e){var n=a.length+b.length;n<f&&(a=(new Array(f-n+1)).join(c)+a),g&&(a=F(a)),a=b+a}else{g&&(a=F(a)),a=b+a;var n=a.length;n<f&&(a=(new Array(f-n+1)).join(c)+a)}return a+k}};var B=/(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/,C=d3.map({g:function(a,b){return a.toPrecision(b)},e:function(a,b){return a.toExponential(b)},f:function(a,b){return a.toFixed(b)},r:function(a,b){return d3.round(a,b=D(a,b)).toFixed(Math.max(0,Math.min(20,b)))}}),G=["y","z","a","f","p","n","μ","m","","k","M","G","T","P","E","Z","Y"].map(H);d3.formatPrefix=function(a,b){var c=0;return a&&(a<0&&(a*=-1),b&&(a=d3.round(a,D(a,b))),c=1+Math.floor(1e-12+Math.log(a)/Math.LN10),c=Math.max(-24,Math.min(24,Math.floor((c<=0?c+1:c-1)/3)*3))),G[8+c/3]};var I=R(2),J=R(3),K=function(){return Q},L=d3.map({linear:K,poly:R,quad:function(){return I},cubic:function(){return J},sin:function(){return S},exp:function(){return T},circle:function(){return U},elastic:V,back:W,bounce:function(){return X}}),M=d3.map({"in":Q,out:O,"in-out":P,"out-in":function(a){return P(O(a))}});d3.ease=function(a){var b=a.indexOf("-"),c=b>=0?a.substring(0,b):a,d=b>=0?a.substring(b+1):"in";return c=L.get(c)||K,d=M.get(d)||Q,N(d(c.apply(null,Array.prototype.slice.call(arguments,1))))},d3.event=null,d3.interpolate=function(a,b){var c=d3.interpolators.length,d;while(--c>=0&&!(d=d3.interpolators[c](a,b)));return d},d3.interpolateNumber=function(a,b){return b-=a,function(c){return a+b*c}},d3.interpolateRound=function(a,b){return b-=a,function(c){return Math.round(a+b*c)}},d3.interpolateString=function(a,b){var c,d,e,f=0,g=0,h=[],i=[],j,k;_.lastIndex=0;for(d=0;c=_.exec(b);++d)c.index&&h.push(b.substring(f,g=c.index)),i.push({i:h.length,x:c[0]}),h.push(null),f=_.lastIndex;f<b.length&&h.push(b.substring(f));for(d=0,j=i.length;(c=_.exec(a))&&d<j;++d){k=i[d];if(k.x==c[0]){if(k.i)if(h[k.i+1]==null){h[k.i-1]+=k.x,h.splice(k.i,1);for(e=d+1;e<j;++e)i[e].i--}else{h[k.i-1]+=k.x+h[k.i+1],h.splice(k.i,2);for(e=d+1;e<j;++e)i[e].i-=2}else if(h[k.i+1]==null)h[k.i]=k.x;else{h[k.i]=k.x+h[k.i+1],h.splice(k.i+1,1);for(e=d+1;e<j;++e)i[e].i--}i.splice(d,1),j--,d--}else k.x=d3.interpolateNumber(parseFloat(c[0]),parseFloat(k.x))}while(d<j)k=i.pop(),h[k.i+1]==null?h[k.i]=k.x:(h[k.i]=k.x+h[k.i+1],h.splice(k.i+1,1)),j--;return h.length===1?h[0]==null?i[0].x:function(){return b}:function(a){for(d=0;d<j;++d)h[(k=i[d]).i]=k.x(a);return h.join("")}},d3.interpolateTransform=function(a,b){var c=[],d=[],e,f=d3.transform(a),g=d3.transform(b),h=f.translate,i=g.translate,j=f.rotate,k=g.rotate,l=f.skew,m=g.skew,n=f.scale,o=g.scale;return h[0]!=i[0]||h[1]!=i[1]?(c.push("translate(",null,",",null,")"),d.push({i:1,x:d3.interpolateNumber(h[0],i[0])},{i:3,x:d3.interpolateNumber(h[1],i[1])})):i[0]||i[1]?c.push("translate("+i+")"):c.push(""),j!=k?(j-k>180?k+=360:k-j>180&&(j+=360),d.push({i:c.push(c.pop()+"rotate(",null,")")-2,x:d3.interpolateNumber(j,k)})):k&&c.push(c.pop()+"rotate("+k+")"),l!=m?d.push({i:c.push(c.pop()+"skewX(",null,")")-2,x:d3.interpolateNumber(l,m)}):m&&c.push(c.pop()+"skewX("+m+")"),n[0]!=o[0]||n[1]!=o[1]?(e=c.push(c.pop()+"scale(",null,",",null,")"),d.push({i:e-4,x:d3.interpolateNumber(n[0],o[0])},{i:e-2,x:d3.interpolateNumber(n[1],o[1])})):(o[0]!=1||o[1]!=1)&&c.push(c.pop()+"scale("+o+")"),e=d.length,function(a){var b=-1,f;while(++b<e)c[(f=d[b]).i]=f.x(a);return c.join("")}},d3.interpolateRgb=function(a,b){a=d3.rgb(a),b=d3.rgb(b);var c=a.r,d=a.g,e=a.b,f=b.r-c,g=b.g-d,h=b.b-e;return function(a){return"#"+bf(Math.round(c+f*a))+bf(Math.round(d+g*a))+bf(Math.round(e+h*a))}},d3.interpolateHsl=function(a,b){a=d3.hsl(a),b=d3.hsl(b);var c=a.h,d=a.s,e=a.l,f=b.h-c,g=b.s-d,h=b.l-e;return f>180?f-=360:f<-180&&(f+=360),function(a){return bm(c+f*a,d+g*a,e+h*a).toString()}},d3.interpolateArray=function(a,b){var c=[],d=[],e=a.length,f=b.length,g=Math.min(a.length,b.length),h;for(h=0;h<g;++h)c.push(d3.interpolate(a[h],b[h]));for(;h<e;++h)d[h]=a[h];for(;h<f;++h)d[h]=b[h];return function(a){for(h=0;h<g;++h)d[h]=c[h](a);return d}},d3.interpolateObject=function(a,b){var c={},d={},e;for(e in a)e in b?c[e]=ba(e)(a[e],b[e]):d[e]=a[e];for(e in b)e in a||(d[e]=b[e]);return function(a){for(e in c)d[e]=c[e](a);return d}};var _=/[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g;d3.interpolators=[d3.interpolateObject,function(a,b){return b instanceof Array&&d3.interpolateArray(a,b)},function(a,b){return(typeof a=="string"||typeof b=="string")&&d3.interpolateString(a+"",b+"")},function(a,b){return(typeof b=="string"?bj.has(b)||/^(#|rgb\(|hsl\()/.test(b):b instanceof be||b instanceof bl)&&d3.interpolateRgb(a,b)},function(a,b){return!isNaN(a=+a)&&!isNaN(b=+b)&&d3.interpolateNumber(a,b)}],d3.rgb=function(a,b,c){return arguments.length===1?a instanceof be?bd(a.r,a.g,a.b):bg(""+a,bd,bm):bd(~~a,~~b,~~c)},be.prototype.brighter=function(a){a=Math.pow(.7,arguments.length?a:1);var b=this.r,c=this.g,d=this.b,e=30;return!b&&!c&&!d?bd(e,e,e):(b&&b<e&&(b=e),c&&c<e&&(c=e),d&&d<e&&(d=e),bd(Math.min(255,Math.floor(b/a)),Math.min(255,Math.floor(c/a)),Math.min(255,Math.floor(d/a))))},be.prototype.darker=function(a){return a=Math.pow(.7,arguments.length?a:1),bd(Math.floor(a*this.r),Math.floor(a*this.g),Math.floor(a*this.b))},be.prototype.hsl=function(){return bh(this.r,this.g,this.b)},be.prototype.toString=function(){return"#"+bf(this.r)+bf(this.g)+bf(this.b)};var bj=d3.map({aliceblue:"#f0f8ff",antiquewhite:"#faebd7",aqua:"#00ffff",aquamarine:"#7fffd4",azure:"#f0ffff",beige:"#f5f5dc",bisque:"#ffe4c4",black:"#000000",blanchedalmond:"#ffebcd",blue:"#0000ff",blueviolet:"#8a2be2",brown:"#a52a2a",burlywood:"#deb887",cadetblue:"#5f9ea0",chartreuse:"#7fff00",chocolate:"#d2691e",coral:"#ff7f50",cornflowerblue:"#6495ed",cornsilk:"#fff8dc",crimson:"#dc143c",cyan:"#00ffff",darkblue:"#00008b",darkcyan:"#008b8b",darkgoldenrod:"#b8860b",darkgray:"#a9a9a9",darkgreen:"#006400",darkgrey:"#a9a9a9",darkkhaki:"#bdb76b",darkmagenta:"#8b008b",darkolivegreen:"#556b2f",darkorange:"#ff8c00",darkorchid:"#9932cc",darkred:"#8b0000",darksalmon:"#e9967a",darkseagreen:"#8fbc8f",darkslateblue:"#483d8b",darkslategray:"#2f4f4f",darkslategrey:"#2f4f4f",darkturquoise:"#00ced1",darkviolet:"#9400d3",deeppink:"#ff1493",deepskyblue:"#00bfff",dimgray:"#696969",dimgrey:"#696969",dodgerblue:"#1e90ff",firebrick:"#b22222",floralwhite:"#fffaf0",forestgreen:"#228b22",fuchsia:"#ff00ff",gainsboro:"#dcdcdc",ghostwhite:"#f8f8ff",gold:"#ffd700",goldenrod:"#daa520",gray:"#808080",green:"#008000",greenyellow:"#adff2f",grey:"#808080",honeydew:"#f0fff0",hotpink:"#ff69b4",indianred:"#cd5c5c",indigo:"#4b0082",ivory:"#fffff0",khaki:"#f0e68c",lavender:"#e6e6fa",lavenderblush:"#fff0f5",lawngreen:"#7cfc00",lemonchiffon:"#fffacd",lightblue:"#add8e6",lightcoral:"#f08080",lightcyan:"#e0ffff",lightgoldenrodyellow:"#fafad2",lightgray:"#d3d3d3",lightgreen:"#90ee90",lightgrey:"#d3d3d3",lightpink:"#ffb6c1",lightsalmon:"#ffa07a",lightseagreen:"#20b2aa",lightskyblue:"#87cefa",lightslategray:"#778899",lightslategrey:"#778899",lightsteelblue:"#b0c4de",lightyellow:"#ffffe0",lime:"#00ff00",limegreen:"#32cd32",linen:"#faf0e6",magenta:"#ff00ff",maroon:"#800000",mediumaquamarine:"#66cdaa",mediumblue:"#0000cd",mediumorchid:"#ba55d3",mediumpurple:"#9370db",mediumseagreen:"#3cb371",mediumslateblue:"#7b68ee",mediumspringgreen:"#00fa9a",mediumturquoise:"#48d1cc",mediumvioletred:"#c71585",midnightblue:"#191970",mintcream:"#f5fffa",mistyrose:"#ffe4e1",moccasin:"#ffe4b5",navajowhite:"#ffdead",navy:"#000080",oldlace:"#fdf5e6",olive:"#808000",olivedrab:"#6b8e23",orange:"#ffa500",orangered:"#ff4500",orchid:"#da70d6",palegoldenrod:"#eee8aa",palegreen:"#98fb98",paleturquoise:"#afeeee",palevioletred:"#db7093",papayawhip:"#ffefd5",peachpuff:"#ffdab9",peru:"#cd853f",pink:"#ffc0cb",plum:"#dda0dd",powderblue:"#b0e0e6",purple:"#800080",red:"#ff0000",rosybrown:"#bc8f8f",royalblue:"#4169e1",saddlebrown:"#8b4513",salmon:"#fa8072",sandybrown:"#f4a460",seagreen:"#2e8b57",seashell:"#fff5ee",sienna:"#a0522d",silver:"#c0c0c0",skyblue:"#87ceeb",slateblue:"#6a5acd",slategray:"#708090",slategrey:"#708090",snow:"#fffafa",springgreen:"#00ff7f",steelblue:"#4682b4",tan:"#d2b48c",teal:"#008080",thistle:"#d8bfd8",tomato:"#ff6347",turquoise:"#40e0d0",violet:"#ee82ee",wheat:"#f5deb3",white:"#ffffff",whitesmoke:"#f5f5f5",yellow:"#ffff00",yellowgreen:"#9acd32"});bj.forEach(function(a,b){bj.set(a,bg(b,bd,bm))}),d3.hsl=function(a,b,c){return arguments.length===1?a instanceof bl?bk(a.h,a.s,a.l):bg(""+a,bh,bk):bk(+a,+b,+c)},bl.prototype.brighter=function(a){return a=Math.pow(.7,arguments.length?a:1),bk(this.h,this.s,this.l/a)},bl.prototype.darker=function(a){return a=Math.pow(.7,arguments.length?a:1),bk(this.h,this.s,a*this.l)},bl.prototype.rgb=function(){return bm(this.h,this.s,this.l)},bl.prototype.toString=function(){return this.rgb().toString()};var bo=function(a,b){return b.querySelector(a)},bp=function(a,b){return b.querySelectorAll(a)},bq=document.documentElement,br=bq.matchesSelector||bq.webkitMatchesSelector||bq.mozMatchesSelector||bq.msMatchesSelector||bq.oMatchesSelector,bs=function(a,b){return br.call(a,b)};typeof Sizzle=="function"&&(bo=function(a,b){return Sizzle(a,b)[0]||null},bp=function(a,b){return Sizzle.uniqueSort(Sizzle(a,b))},bs=Sizzle.matchesSelector);var bt=[];d3.selection=function(){return bB},d3.selection.prototype=bt,bt.select=function(a){var b=[],c,d,e,f;typeof a!="function"&&(a=bu(a));for(var g=-1,h=this.length;++g<h;){b.push(c=[]),c.parentNode=(e=this[g]).parentNode;for(var i=-1,j=e.length;++i<j;)(f=e[i])?(c.push(d=a.call(f,f.__data__,i)),d&&"__data__"in f&&(d.__data__=f.__data__)):c.push(null)}return bn(b)},bt.selectAll=function(a){var b=[],c,d;typeof a!="function"&&(a=bv(a));for(var f=-1,g=this.length;++f<g;)for(var h=this[f],i=-1,j=h.length;++i<j;)if(d=h[i])b.push(c=e(a.call(d,d.__data__,i))),c.parentNode=d;return bn(b)},bt.attr=function(a,b){function d(){this.removeAttribute(a)}function e(){this.removeAttributeNS(a.space,a.local)}function f(){this.setAttribute(a,b)}function g(){this.setAttributeNS(a.space,a.local,b)}function h(){var c=b.apply(this,arguments);c==null?this.removeAttribute(a):this.setAttribute(a,c)}function i(){var c=b.apply(this,arguments);c==null?this.removeAttributeNS(a.space,a.local):this.setAttributeNS(a.space,a.local,c)}a=d3.ns.qualify(a);if(arguments.length<2){var c=this.node();return a.local?c.getAttributeNS(a.space,a.local):c.getAttribute(a)}return this.each(b==null?a.local?e:d:typeof b=="function"?a.local?i:h:a.local?g:f)},bt.classed=function(a,b){var c=v(a).split(" "),d=c.length,e=-1;if(arguments.length>1){while(++e<d)bw.call(this,c[e],b);return this}while(++e<d)if(!bw.call(this,c[e]))return!1;return!0},bt.style=function(a,b,c){function d(){this.style.removeProperty(a)}function e(){this.style.setProperty(a,b,c)}function f(){var d=b.apply(this,arguments);d==null?this.style.removeProperty(a):this.style.setProperty(a,d,c)}return arguments.length<3&&(c=""),arguments.length<2?window.getComputedStyle(this.node(),null).getPropertyValue(a):this.each(b==null?d:typeof b=="function"?f:e)},bt.property=function(a,b){function c(){delete this[a]}function d(){this[a]=b}function e(){var c=b.apply(this,arguments);c==null?delete this[a]:this[a]=c}return arguments.length<2?this.node()[a]:this.each(b==null?c:typeof b=="function"?e:d)},bt.text=function(a){return arguments.length<1?this.node().textContent:this.each(typeof a=="function"?function(){var b=a.apply(this,arguments);this.textContent=b==null?"":b}:a==null?function(){this.textContent=""}:function(){this.textContent=a})},bt.html=function(a){return arguments.length<1?this.node().innerHTML:this.each(typeof a=="function"?function(){var b=a.apply(this,arguments);this.innerHTML=b==null?"":b}:a==null?function(){this.innerHTML=""}:function(){this.innerHTML=a})},bt.append=function(a){function b(){return this.appendChild(document.createElementNS(this.namespaceURI,a))}function c(){return this.appendChild(document.createElementNS(a.space,a.local))}return a=d3.ns.qualify(a),this.select(a.local?c:b)},bt.insert=function(a,b){function c(){return this.insertBefore(document.createElementNS(this.namespaceURI,a),bo(b,this))}function d(){return this.insertBefore(document.createElementNS(a.space,a.local),bo(b,this))}return a=d3.ns.qualify(a),this.select(a.local?d:c)},bt.remove=function(){return this.each(function(){var a=this.parentNode;a&&a.removeChild(this)})},bt.data=function(a,b){function g(a,c){var d,e=a.length,f=c.length,g=Math.min(e,f),l=Math.max(e,f),m=[],n=[],o=[],p,q;if(b){var r=new j,s=[],t,u=c.length;for(d=-1;++d<e;)t=b.call(p=a[d],p.__data__,d),r.has(t)?o[u++]=p:r.set(t,p),s.push(t);for(d=-1;++d<f;)t=b.call(c,q=c[d],d),r.has(t)?(m[d]=p=r.get(t),p.__data__=q,n[d]=o[d]=null):(n[d]=bx(q),m[d]=o[d]=null),r.remove(t);for(d=-1;++d<e;)r.has(s[d])&&(o[d]=a[d])}else{for(d=-1;++d<g;)p=a[d],q=c[d],p?(p.__data__=q,m[d]=p,n[d]=o[d]=null):(n[d]=bx(q),m[d]=o[d]=null);for(;d<f;++d)n[d]=bx(c[d]),m[d]=o[d]=null;for(;d<l;++d)o[d]=a[d],n[d]=m[d]=null}n.update=m,n.parentNode=m.parentNode=o.parentNode=a.parentNode,h.push(n),i.push(m),k.push(o)}var c=-1,d=this.length,e,f;if(!arguments.length){a=new Array(d=(e=this[0]).length);while(++c<d)if(f=e[c])a[c]=f.__data__;return a}var h=bC([]),i=bn([]),k=bn([]);if(typeof a=="function")while(++c<d)g(e=this[c],a.call(e,e.parentNode.__data__,c));else while(++c<d)g(e=this[c],a);return i.enter=function(){return h},i.exit=function(){return k},i},bt.datum=bt.map=function(a){return arguments.length<1?this.property("__data__"):this.property("__data__",a)},bt.filter=function(a){var b=[],c,d,e;typeof a!="function"&&(a=by(a));for(var f=0,g=this.length;f<g;f++){b.push(c=[]),c.parentNode=(d=this[f]).parentNode;for(var h=0,i=d.length;h<i;h++)(e=d[h])&&a.call(e,e.__data__,h)&&c.push(e)}return bn(b)},bt.order=function(){for(var a=-1,b=this.length;++a<b;)for(var c=this[a],d=c.length-1,e=c[d],f;--d>=0;)if(f=c[d])e&&e!==f.nextSibling&&e.parentNode.insertBefore(f,e),e=f;return this},bt.sort=function(a){a=bz.apply(this,arguments);for(var b=-1,c=this.length;++b<c;)this[b].sort(a);return this.order()},bt.on=function(a,b,c){arguments.length<3&&(c=!1);var d="__on"+a,e=a.indexOf(".");return e>0&&(a=a.substring(0,e)),arguments.length<2?(e=this.node()[d])&&e._:this.each(function(e,f){function i(a){var c=d3.event;d3.event=a;try{b.call(g,g.__data__,f)}finally{d3.event=c}}var g=this,h=g[d];h&&(g.removeEventListener(a,h,h.$),delete g[d]),b&&(g.addEventListener(a,g[d]=i,i.$=c),i._=b)})},bt.each=function(a){return bA(this,function(b,c,d){a.call(b,b.__data__,c,d)})},bt.call=function(a){return a.apply(this,(arguments[0]=this,arguments)),this},bt.empty=function(){return!this.node()},bt.node=function(a){for(var b=0,c=this.length;b<c;b++)for(var d=this[b],e=0,f=d.length;e<f;e++){var g=d[e];if(g)return g}return null},bt.transition=function(){var a=[],b,c;for(var d=-1,e=this.length;++d<e;){a.push(b=[]);for(var f=this[d],g=-1,h=f.length;++g<h;)b.push((c=f[g])?{node:c,delay:bO,duration:bP}:null)}return bE(a,bK||++bJ,Date.now())};var bB=bn([[document]]);bB[0].parentNode=bq,d3.select=function(a){return typeof a=="string"?bB.select(a):bn([[a]])},d3.selectAll=function(a){return typeof a=="string"?bB.selectAll(a):bn([e(a)])};var bD=[];d3.selection.enter=bC,d3.selection.enter.prototype=bD,bD.append=bt.append,bD.insert=bt.insert,bD.empty=bt.empty,bD.node=bt.node,bD.select=function(a){var b=[],c,d,e,f,g;for(var h=-1,i=this.length;++h<i;){e=(f=this[h]).update,b.push(c=[]),c.parentNode=f.parentNode;for(var j=-1,k=f.length;++j<k;)(g=f[j])?(c.push(e[j]=d=a.call(f.parentNode,g.__data__,j)),d.__data__=g.__data__):c.push(null)}return bn(b)};var bF={},bI=[],bJ=0,bK=0,bL=0,bM=250,bN=d3.ease("cubic-in-out"),bO=bL,bP=bM,bQ=bN;bI.call=bt.call,d3.transition=function(a){return arguments.length?bK?a.transition():a:bB.transition()},d3.transition.prototype=bI,bI.select=function(a){var b=[],c,d,e;typeof a!="function"&&(a=bu(a));for(var f=-1,g=this.length;++f<g;){b.push(c=[]);for(var h=this[f],i=-1,j=h.length;++i<j;)(e=h[i])&&(d=a.call(e.node,e.node.__data__,i))?("__data__"in e.node&&(d.__data__=e.node.__data__),c.push({node:d,delay:e.delay,duration:e.duration})):c.push(null)}return bE(b,this.id,this.time).ease(this.ease())},bI.selectAll=function(a){var b=[],c,d,e;typeof a!="function"&&(a=bv(a));for(var f=-1,g=this.length;++f<g;)for(var h=this[f],i=-1,j=h.length;++i<j;)if(e=h[i]){d=a.call(e.node,e.node.__data__,i),b.push(c=[]);for(var k=-1,l=d.length;++k<l;)c.push({node:d[k],delay:e.delay,duration:e.duration})}return bE(b,this.id,this.time).ease(this.ease())},bI.attr=function(a,b){return this.attrTween(a,bH(a,b))},bI.attrTween=function(a,b){function d(a,d){var e=b.call(this,a,d,this.getAttribute(c));return e===bF?(this.removeAttribute(c),null):e&&function(a){this.setAttribute(c,e(a))}}function e(a,d){var e=b.call(this,a,d,this.getAttributeNS(c.space,c.local));return e===bF?(this.removeAttributeNS(c.space,c.local),null):e&&function(a){this.setAttributeNS(c.space,c.local,e(a))}}var c=d3.ns.qualify(a);return this.tween("attr."+a,c.local?e:d)},bI.style=function(a,b,c){return arguments.length<3&&(c=""),this.styleTween(a,bH(a,b),c)},bI.styleTween=function(a,b,c){return arguments.length<3&&(c=""),this.tween("style."+a,function(d,e){var f=b.call(this,d,e,window.getComputedStyle(this,null).getPropertyValue(a));return f===bF?(this.style.removeProperty(a),null):f&&function(b){this.style.setProperty(a,f(b),c)}})},bI.text=function(a){return this.tween("text",function(b,c){this.textContent=typeof a=="function"?a.call(this,b,c):a})},bI.remove=function(){return this.each("end.transition",function(){var a;!this.__transition__&&(a=this.parentNode)&&a.removeChild(this)})},bI.delay=function(a){return bA(this,typeof a=="function"?function(b,c,d){b.delay=a.call(b=b.node,b.__data__,c,d)|0}:(a|=0,function(b){b.delay=a}))},bI.duration=function(a){return bA(this,typeof a=="function"?function(b,c,d){b.duration=Math.max(1,a.call(b=b.node,b.__data__,c,d)|0)}:(a=Math.max(1,a|0),function(b){b.duration=a}))},bI.transition=function(){return this.select(n)};var bS=null,bT,bU;d3.timer=function(a,b,c){var d=!1,e,f=bS;if(arguments.length<3){if(arguments.length<2)b=0;else if(!isFinite(b))return;c=Date.now()}while(f){if(f.callback===a){f.then=c,f.delay=b,d=!0;break}e=f,f=f.next}d||(bS={callback:a,then:c,delay:b,next:bS}),bT||(bU=clearTimeout(bU),bT=1,bX(bV))},d3.timer.flush=function(){var a,b=Date.now(),c=bS;while(c)a=b-c.then,c.delay||(c.flush=c.callback(a)),c=c.next;bW()};var bX=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.oRequestAnimationFrame||window.msRequestAnimationFrame||function(a){setTimeout(a,17)};d3.transform=function(a){var b=document.createElementNS(d3.ns.prefix.svg,"g"),c={a:1,b:0,c:0,d:1,e:0,f:0};return(d3.transform=function(a){b.setAttribute("transform",a);var d=b.transform.baseVal.consolidate();return new bY(d?d.matrix:c)})(a)},bY.prototype.toString=function(){return"translate("+this.translate+")rotate("+this.rotate+")skewX("+this.skew+")scale("+this.scale+")"};var ca=180/Math.PI;d3.mouse=function(a){return cc(a,Z())};var cb=/WebKit/.test(navigator.userAgent)?-1:0;d3.touches=function(a,b){return arguments.length<2&&(b=Z().touches),b?e(b).map(function(b){var c=cc(a,b);return c.identifier=b.identifier,c}):[]},d3.scale={},d3.scale.linear=function(){return ci([0,1],[0,1],d3.interpolate,!1)},d3.scale.log=function(){return cq(d3.scale.linear(),cs)};var cr=d3.format(".0e");cs.pow=function(a){return Math.pow(10,a)},ct.pow=function(a){return-Math.pow(10,-a)},d3.scale.pow=function(){return cu(d3.scale.linear(),1)},d3.scale.sqrt=function(){return d3.scale.pow().exponent(.5)},d3.scale.ordinal=function(){return cw([],{t:"range",x:[]})},d3.scale.category10=function(){return d3.scale.ordinal().range(cx)},d3.scale.category20=function(){return d3.scale.ordinal().range(cy)},d3.scale.category20b=function(){return d3.scale.ordinal().range(cz)},d3.scale.category20c=function(){return d3.scale.ordinal().range(cA)};var cx=["#1f77b4","#ff7f0e","#2ca02c","#d62728","#9467bd","#8c564b","#e377c2","#7f7f7f","#bcbd22","#17becf"],cy=["#1f77b4","#aec7e8","#ff7f0e","#ffbb78","#2ca02c","#98df8a","#d62728","#ff9896","#9467bd","#c5b0d5","#8c564b","#c49c94","#e377c2","#f7b6d2","#7f7f7f","#c7c7c7","#bcbd22","#dbdb8d","#17becf","#9edae5"],cz=["#393b79","#5254a3","#6b6ecf","#9c9ede","#637939","#8ca252","#b5cf6b","#cedb9c","#8c6d31","#bd9e39","#e7ba52","#e7cb94","#843c39","#ad494a","#d6616b","#e7969c","#7b4173","#a55194","#ce6dbd","#de9ed6"],cA=["#3182bd","#6baed6","#9ecae1","#c6dbef","#e6550d","#fd8d3c","#fdae6b","#fdd0a2","#31a354","#74c476","#a1d99b","#c7e9c0","#756bb1","#9e9ac8","#bcbddc","#dadaeb","#636363","#969696","#bdbdbd","#d9d9d9"];d3.scale.quantile=function(){return cB([],[])},d3.scale.quantize=function(){return cC(0,1,[0,1])},d3.scale.identity=function(){return cD([0,1])},d3.svg={},d3.svg.arc=function(){function e(){var e=a.apply(this,arguments),f=b.apply(this,arguments),g=c.apply(this,arguments)+cE,h=d.apply(this,arguments)+cE,i=(h<g&&(i=g,g=h,h=i),h-g),j=i<Math.PI?"0":"1",k=Math.cos(g),l=Math.sin(g),m=Math.cos(h),n=Math.sin(h);return i>=cF?e?"M0,"+f+"A"+f+","+f+" 0 1,1 0,"+ -f+"A"+f+","+f+" 0 1,1 0,"+f+"M0,"+e+"A"+e+","+e+" 0 1,0 0,"+ -e+"A"+e+","+e+" 0 1,0 0,"+e+"Z":"M0,"+f+"A"+f+","+f+" 0 1,1 0,"+ -f+"A"+f+","+f+" 0 1,1 0,"+f+"Z":e?"M"+f*k+","+f*l+"A"+f+","+f+" 0 "+j+",1 "+f*m+","+f*n+"L"+e*m+","+e*n+"A"+e+","+e+" 0 "+j+",0 "+e*k+","+e*l+"Z":"M"+f*k+","+f*l+"A"+f+","+f+" 0 "+j+",1 "+f*m+","+f*n+"L0,0"+"Z"}var a=cG,b=cH,c=cI,d=cJ;return e.innerRadius=function(b){return arguments.length?(a=p(b),e):a},e.outerRadius=function(a){return arguments.length?(b=p(a),e):b},e.startAngle=function(a){return arguments.length?(c=p(a),e):c},e.endAngle=function(a){return arguments.length?(d=p(a),e):d},e.centroid=function(){var e=(a.apply(this,arguments)+b.apply(this,arguments))/2,f=(c.apply(this,arguments)+d.apply(this,arguments))/2+cE;return[Math.cos(f)*e,Math.sin(f)*e]},e};var cE=-Math.PI/2,cF=2*Math.PI-1e-6;d3.svg.line=function(){return cK(m)};var cN="linear",cO=d3.map({linear:cP,"step-before":cQ,"step-after":cR,basis:cX,"basis-open":cY,"basis-closed":cZ,bundle:c$,cardinal:cU,"cardinal-open":cS,"cardinal-closed":cT,monotone:dh}),da=[0,2/3,1/3,0],db=[0,1/3,2/3,0],dc=[0,1/6,2/3,1/6];d3.svg.line.radial=function(){var a=cK(di);return a.radius=a.x,delete a.x,a.angle=a.y,delete a.y,a},cQ.reverse=cR,cR.reverse=cQ,d3.svg.area=function(){return dj(Object)},d3.svg.area.radial=function(){var a=dj(di);return a.radius=a.x,delete a.x,a.innerRadius=a.x0,delete a.x0,a.outerRadius=a.x1,delete a.x1,a.angle=a.y,delete a.y,a.startAngle=a.y0,delete a.y0,a.endAngle=a.y1,delete a.y1,a},d3.svg.chord=function(){function f(c,d){var e=g(this,a,c,d),f=g(this,b,c,d);return"M"+e.p0+i(e.r,e.p1,e.a1-e.a0)+(h(e,f)?j(e.r,e.p1,e.r,e.p0):j(e.r,e.p1,f.r,f.p0)+i(f.r,f.p1,f.a1-f.a0)+j(f.r,f.p1,e.r,e.p0))+"Z"}function g(a,b,f,g){var h=b.call(a,f,g),i=c.call(a,h,g),j=d.call(a,h,g)+cE,k=e.call(a,h,g)+cE;return{r:i,a0:j,a1:k,p0:[i*Math.cos(j),i*Math.sin(j)],p1:[i*Math.cos(k),i*Math.sin(k)]}}function h(a,b){return a.a0==b.a0&&a.a1==b.a1}function i(a,b,c){return"A"+a+","+a+" 0 "+ +(c>Math.PI)+",1 "+b}function j(a,b,c,d){return"Q 0,0 "+d}var a=dk,b=dl,c=dm,d=cI,e=cJ;return f.radius=function(a){return arguments.length?(c=p(a),f):c},f.source=function(b){return arguments.length?(a=p(b),f):a},f.target=function(a){return arguments.length?(b=p(a),f):b},f.startAngle=function(a){return arguments.length?(d=p(a),f):d},f.endAngle=function(a){return arguments.length?(e=p(a),f):e},f},d3.svg.diagonal=function(){function d(d,e){var f=a.call(this,d,e),g=b.call(this,d,e),h=(f.y+g.y)/2,i=[f,{x:f.x,y:h},{x:g.x,y:h},g];return i=i.map(c),"M"+i[0]+"C"+i[1]+" "+i[2]+" "+i[3]}var a=dk,b=dl,c=dq;return d.source=function(b){return arguments.length?(a=p(b),d):a},d.target=function(a){return arguments.length?(b=p(a),d):b},d.projection=function(a){return arguments.length?(c=a,d):c},d},d3.svg.diagonal
+.radial=function(){var a=d3.svg.diagonal(),b=dq,c=a.projection;return a.projection=function(a){return arguments.length?c(dr(b=a)):b},a},d3.svg.mouse=d3.mouse,d3.svg.touches=d3.touches,d3.svg.symbol=function(){function c(c,d){return(dv.get(a.call(this,c,d))||du)(b.call(this,c,d))}var a=dt,b=ds;return c.type=function(b){return arguments.length?(a=p(b),c):a},c.size=function(a){return arguments.length?(b=p(a),c):b},c};var dv=d3.map({circle:du,cross:function(a){var b=Math.sqrt(a/5)/2;return"M"+ -3*b+","+ -b+"H"+ -b+"V"+ -3*b+"H"+b+"V"+ -b+"H"+3*b+"V"+b+"H"+b+"V"+3*b+"H"+ -b+"V"+b+"H"+ -3*b+"Z"},diamond:function(a){var b=Math.sqrt(a/(2*dx)),c=b*dx;return"M0,"+ -b+"L"+c+",0"+" 0,"+b+" "+ -c+",0"+"Z"},square:function(a){var b=Math.sqrt(a)/2;return"M"+ -b+","+ -b+"L"+b+","+ -b+" "+b+","+b+" "+ -b+","+b+"Z"},"triangle-down":function(a){var b=Math.sqrt(a/dw),c=b*dw/2;return"M0,"+c+"L"+b+","+ -c+" "+ -b+","+ -c+"Z"},"triangle-up":function(a){var b=Math.sqrt(a/dw),c=b*dw/2;return"M0,"+ -c+"L"+b+","+c+" "+ -b+","+c+"Z"}});d3.svg.symbolTypes=dv.keys();var dw=Math.sqrt(3),dx=Math.tan(30*Math.PI/180);d3.svg.axis=function(){function k(k){k.each(function(){var k=d3.select(this),l=h==null?a.ticks?a.ticks.apply(a,g):a.domain():h,m=i==null?a.tickFormat?a.tickFormat.apply(a,g):String:i,n=dA(a,l,j),o=k.selectAll(".minor").data(n,String),p=o.enter().insert("line","g").attr("class","tick minor").style("opacity",1e-6),q=d3.transition(o.exit()).style("opacity",1e-6).remove(),r=d3.transition(o).style("opacity",1),s=k.selectAll("g").data(l,String),t=s.enter().insert("g","path").style("opacity",1e-6),u=d3.transition(s.exit()).style("opacity",1e-6).remove(),v=d3.transition(s).style("opacity",1),w,x=cf(a),y=k.selectAll(".domain").data([0]),z=y.enter().append("path").attr("class","domain"),A=d3.transition(y),B=a.copy(),C=this.__chart__||B;this.__chart__=B,t.append("line").attr("class","tick"),t.append("text");var D=t.select("line"),E=v.select("line"),F=s.select("text").text(m),G=t.select("text"),H=v.select("text");switch(b){case"bottom":w=dy,p.attr("y2",d),r.attr("x2",0).attr("y2",d),D.attr("y2",c),G.attr("y",Math.max(c,0)+f),E.attr("x2",0).attr("y2",c),H.attr("x",0).attr("y",Math.max(c,0)+f),F.attr("dy",".71em").attr("text-anchor","middle"),A.attr("d","M"+x[0]+","+e+"V0H"+x[1]+"V"+e);break;case"top":w=dy,p.attr("y2",-d),r.attr("x2",0).attr("y2",-d),D.attr("y2",-c),G.attr("y",-(Math.max(c,0)+f)),E.attr("x2",0).attr("y2",-c),H.attr("x",0).attr("y",-(Math.max(c,0)+f)),F.attr("dy","0em").attr("text-anchor","middle"),A.attr("d","M"+x[0]+","+ -e+"V0H"+x[1]+"V"+ -e);break;case"left":w=dz,p.attr("x2",-d),r.attr("x2",-d).attr("y2",0),D.attr("x2",-c),G.attr("x",-(Math.max(c,0)+f)),E.attr("x2",-c).attr("y2",0),H.attr("x",-(Math.max(c,0)+f)).attr("y",0),F.attr("dy",".32em").attr("text-anchor","end"),A.attr("d","M"+ -e+","+x[0]+"H0V"+x[1]+"H"+ -e);break;case"right":w=dz,p.attr("x2",d),r.attr("x2",d).attr("y2",0),D.attr("x2",c),G.attr("x",Math.max(c,0)+f),E.attr("x2",c).attr("y2",0),H.attr("x",Math.max(c,0)+f).attr("y",0),F.attr("dy",".32em").attr("text-anchor","start"),A.attr("d","M"+e+","+x[0]+"H0V"+x[1]+"H"+e)}if(a.ticks)t.call(w,C),v.call(w,B),u.call(w,B),p.call(w,C),r.call(w,B),q.call(w,B);else{var I=B.rangeBand()/2,J=function(a){return B(a)+I};t.call(w,J),v.call(w,J)}})}var a=d3.scale.linear(),b="bottom",c=6,d=6,e=6,f=3,g=[10],h=null,i,j=0;return k.scale=function(b){return arguments.length?(a=b,k):a},k.orient=function(a){return arguments.length?(b=a,k):b},k.ticks=function(){return arguments.length?(g=arguments,k):g},k.tickValues=function(a){return arguments.length?(h=a,k):h},k.tickFormat=function(a){return arguments.length?(i=a,k):i},k.tickSize=function(a,b,f){if(!arguments.length)return c;var g=arguments.length-1;return c=+a,d=g>1?+b:c,e=g>0?+arguments[g]:c,k},k.tickPadding=function(a){return arguments.length?(f=+a,k):f},k.tickSubdivide=function(a){return arguments.length?(j=+a,k):j},k},d3.svg.brush=function(){function g(a){a.each(function(){var a=d3.select(this),e=a.selectAll(".background").data([0]),f=a.selectAll(".extent").data([0]),l=a.selectAll(".resize").data(d,String),m;a.style("pointer-events","all").on("mousedown.brush",k).on("touchstart.brush",k),e.enter().append("rect").attr("class","background").style("visibility","hidden").style("cursor","crosshair"),f.enter().append("rect").attr("class","extent").style("cursor","move"),l.enter().append("g").attr("class",function(a){return"resize "+a}).style("cursor",function(a){return dB[a]}).append("rect").attr("x",function(a){return/[ew]$/.test(a)?-3:null}).attr("y",function(a){return/^[ns]/.test(a)?-3:null}).attr("width",6).attr("height",6).style("visibility","hidden"),l.style("display",g.empty()?"none":null),l.exit().remove(),b&&(m=cf(b),e.attr("x",m[0]).attr("width",m[1]-m[0]),i(a)),c&&(m=cf(c),e.attr("y",m[0]).attr("height",m[1]-m[0]),j(a)),h(a)})}function h(a){a.selectAll(".resize").attr("transform",function(a){return"translate("+e[+/e$/.test(a)][0]+","+e[+/^s/.test(a)][1]+")"})}function i(a){a.select(".extent").attr("x",e[0][0]),a.selectAll(".extent,.n>rect,.s>rect").attr("width",e[1][0]-e[0][0])}function j(a){a.select(".extent").attr("y",e[0][1]),a.selectAll(".extent,.e>rect,.w>rect").attr("height",e[1][1]-e[0][1])}function k(){function x(){var a=d3.event.changedTouches;return a?d3.touches(d,a)[0]:d3.mouse(d)}function y(){d3.event.keyCode==32&&(q||(r=null,s[0]-=e[1][0],s[1]-=e[1][1],q=2),Y())}function z(){d3.event.keyCode==32&&q==2&&(s[0]+=e[1][0],s[1]+=e[1][1],q=0,Y())}function A(){var a=x(),d=!1;t&&(a[0]+=t[0],a[1]+=t[1]),q||(d3.event.altKey?(r||(r=[(e[0][0]+e[1][0])/2,(e[0][1]+e[1][1])/2]),s[0]=e[+(a[0]<r[0])][0],s[1]=e[+(a[1]<r[1])][1]):r=null),o&&B(a,b,0)&&(i(m),d=!0),p&&B(a,c,1)&&(j(m),d=!0),d&&(h(m),l({type:"brush",mode:q?"move":"resize"}))}function B(a,b,c){var d=cf(b),g=d[0],h=d[1],i=s[c],j=e[1][c]-e[0][c],k,l;q&&(g-=i,h-=j+i),k=Math.max(g,Math.min(h,a[c])),q?l=(k+=i)+j:(r&&(i=Math.max(g,Math.min(h,2*r[c]-k))),i<k?(l=k,k=i):l=i);if(e[0][c]!==k||e[1][c]!==l)return f=null,e[0][c]=k,e[1][c]=l,!0}function C(){A(),m.style("pointer-events","all").selectAll(".resize").style("display",g.empty()?"none":null),d3.select("body").style("cursor",null),u.on("mousemove.brush",null).on("mouseup.brush",null).on("touchmove.brush",null).on("touchend.brush",null).on("keydown.brush",null).on("keyup.brush",null),l({type:"brushend"}),Y()}var d=this,k=d3.select(d3.event.target),l=a.of(d,arguments),m=d3.select(d),n=k.datum(),o=!/^(n|s)$/.test(n)&&b,p=!/^(e|w)$/.test(n)&&c,q=k.classed("extent"),r,s=x(),t,u=d3.select(window).on("mousemove.brush",A).on("mouseup.brush",C).on("touchmove.brush",A).on("touchend.brush",C).on("keydown.brush",y).on("keyup.brush",z);if(q)s[0]=e[0][0]-s[0],s[1]=e[0][1]-s[1];else if(n){var v=+/w$/.test(n),w=+/^n/.test(n);t=[e[1-v][0]-s[0],e[1-w][1]-s[1]],s[0]=e[v][0],s[1]=e[w][1]}else d3.event.altKey&&(r=s.slice());m.style("pointer-events","none").selectAll(".resize").style("display",null),d3.select("body").style("cursor",k.style("cursor")),l({type:"brushstart"}),A(),Y()}var a=$(g,"brushstart","brush","brushend"),b=null,c=null,d=dC[0],e=[[0,0],[0,0]],f;return g.x=function(a){return arguments.length?(b=a,d=dC[!b<<1|!c],g):b},g.y=function(a){return arguments.length?(c=a,d=dC[!b<<1|!c],g):c},g.extent=function(a){var d,h,i,j,k;return arguments.length?(f=[[0,0],[0,0]],b&&(d=a[0],h=a[1],c&&(d=d[0],h=h[0]),f[0][0]=d,f[1][0]=h,b.invert&&(d=b(d),h=b(h)),h<d&&(k=d,d=h,h=k),e[0][0]=d|0,e[1][0]=h|0),c&&(i=a[0],j=a[1],b&&(i=i[1],j=j[1]),f[0][1]=i,f[1][1]=j,c.invert&&(i=c(i),j=c(j)),j<i&&(k=i,i=j,j=k),e[0][1]=i|0,e[1][1]=j|0),g):(a=f||e,b&&(d=a[0][0],h=a[1][0],f||(d=e[0][0],h=e[1][0],b.invert&&(d=b.invert(d),h=b.invert(h)),h<d&&(k=d,d=h,h=k))),c&&(i=a[0][1],j=a[1][1],f||(i=e[0][1],j=e[1][1],c.invert&&(i=c.invert(i),j=c.invert(j)),j<i&&(k=i,i=j,j=k))),b&&c?[[d,i],[h,j]]:b?[d,h]:c&&[i,j])},g.clear=function(){return f=null,e[0][0]=e[0][1]=e[1][0]=e[1][1]=0,g},g.empty=function(){return b&&e[0][0]===e[1][0]||c&&e[0][1]===e[1][1]},d3.rebind(g,a,"on")};var dB={n:"ns-resize",e:"ew-resize",s:"ns-resize",w:"ew-resize",nw:"nwse-resize",ne:"nesw-resize",se:"nwse-resize",sw:"nesw-resize"},dC=[["n","e","s","w","nw","ne","se","sw"],["e","w"],["n","s"],[]];d3.behavior={},d3.behavior.drag=function(){function c(){this.on("mousedown.drag",d).on("touchstart.drag",d)}function d(){function j(){var a=c.parentNode,b=d3.event.changedTouches;return b?d3.touches(a,b)[0]:d3.mouse(a)}function k(){if(!c.parentNode)return l();var a=j(),b=a[0]-g[0],e=a[1]-g[1];h|=b|e,g=a,Y(),d({type:"drag",x:a[0]+f[0],y:a[1]+f[1],dx:b,dy:e})}function l(){d({type:"dragend"}),h&&(Y(),d3.event.target===e&&i.on("click.drag",m,!0)),i.on("mousemove.drag",null).on("touchmove.drag",null).on("mouseup.drag",null).on("touchend.drag",null)}function m(){Y(),i.on("click.drag",null)}var c=this,d=a.of(c,arguments),e=d3.event.target,f,g=j(),h=0,i=d3.select(window).on("mousemove.drag",k).on("touchmove.drag",k).on("mouseup.drag",l,!0).on("touchend.drag",l,!0);b?(f=b.apply(c,arguments),f=[f.x-g[0],f.y-g[1]]):f=[0,0],Y(),d({type:"dragstart"})}var a=$(c,"drag","dragstart","dragend"),b=null;return c.origin=function(a){return arguments.length?(b=a,c):b},d3.rebind(c,a,"on")},d3.behavior.zoom=function(){function l(){this.on("mousedown.zoom",r).on("mousewheel.zoom",s).on("mousemove.zoom",t).on("DOMMouseScroll.zoom",s).on("dblclick.zoom",u).on("touchstart.zoom",v).on("touchmove.zoom",w).on("touchend.zoom",v)}function m(b){return[(b[0]-a[0])/c,(b[1]-a[1])/c]}function n(b){return[b[0]*c+a[0],b[1]*c+a[1]]}function o(a){c=Math.max(e[0],Math.min(e[1],a))}function p(b,c){c=n(c),a[0]+=b[0]-c[0],a[1]+=b[1]-c[1]}function q(b){h&&h.domain(g.range().map(function(b){return(b-a[0])/c}).map(g.invert)),j&&j.domain(i.range().map(function(b){return(b-a[1])/c}).map(i.invert)),d3.event.preventDefault(),b({type:"zoom",scale:c,translate:a})}function r(){function h(){d=1,p(d3.mouse(a),g),q(b)}function i(){d&&Y(),e.on("mousemove.zoom",null).on("mouseup.zoom",null),d&&d3.event.target===c&&e.on("click.zoom",j,!0)}function j(){Y(),e.on("click.zoom",null)}var a=this,b=f.of(a,arguments),c=d3.event.target,d=0,e=d3.select(window).on("mousemove.zoom",h).on("mouseup.zoom",i),g=m(d3.mouse(a));window.focus(),Y()}function s(){b||(b=m(d3.mouse(this))),o(Math.pow(2,dF()*.002)*c),p(d3.mouse(this),b),q(f.of(this,arguments))}function t(){b=null}function u(){var a=d3.mouse(this),b=m(a);o(d3.event.shiftKey?c/2:c*2),p(a,b),q(f.of(this,arguments))}function v(){var a=d3.touches(this),e=Date.now();d=c,b={},a.forEach(function(a){b[a.identifier]=m(a)}),Y();if(a.length===1&&e-k<500){var g=a[0],h=m(a[0]);o(c*2),p(g,h),q(f.of(this,arguments))}k=e}function w(){var a=d3.touches(this),c=a[0],e=b[c.identifier];if(g=a[1]){var g,h=b[g.identifier];c=[(c[0]+g[0])/2,(c[1]+g[1])/2],e=[(e[0]+h[0])/2,(e[1]+h[1])/2],o(d3.event.scale*d)}p(c,e),q(f.of(this,arguments))}var a=[0,0],b,c=1,d,e=dE,f=$(l,"zoom"),g,h,i,j,k;return l.translate=function(b){return arguments.length?(a=b.map(Number),l):a},l.scale=function(a){return arguments.length?(c=+a,l):c},l.scaleExtent=function(a){return arguments.length?(e=a==null?dE:a.map(Number),l):e},l.x=function(a){return arguments.length?(h=a,g=a.copy(),l):h},l.y=function(a){return arguments.length?(j=a,i=a.copy(),l):j},d3.rebind(l,f,"on")};var dD,dE=[0,Infinity];d3.layout={},d3.layout.bundle=function(){return function(a){var b=[],c=-1,d=a.length;while(++c<d)b.push(dG(a[c]));return b}},d3.layout.chord=function(){function j(){var a={},j=[],l=d3.range(e),m=[],n,o,p,q,r;b=[],c=[],n=0,q=-1;while(++q<e){o=0,r=-1;while(++r<e)o+=d[q][r];j.push(o),m.push(d3.range(e)),n+=o}g&&l.sort(function(a,b){return g(j[a],j[b])}),h&&m.forEach(function(a,b){a.sort(function(a,c){return h(d[b][a],d[b][c])})}),n=(2*Math.PI-f*e)/n,o=0,q=-1;while(++q<e){p=o,r=-1;while(++r<e){var s=l[q],t=m[s][r],u=d[s][t],v=o,w=o+=u*n;a[s+"-"+t]={index:s,subindex:t,startAngle:v,endAngle:w,value:u}}c[s]={index:s,startAngle:p,endAngle:o,value:(o-p)/n},o+=f}q=-1;while(++q<e){r=q-1;while(++r<e){var x=a[q+"-"+r],y=a[r+"-"+q];(x.value||y.value)&&b.push(x.value<y.value?{source:y,target:x}:{source:x,target:y})}}i&&k()}function k(){b.sort(function(a,b){return i((a.source.value+a.target.value)/2,(b.source.value+b.target.value)/2)})}var a={},b,c,d,e,f=0,g,h,i;return a.matrix=function(f){return arguments.length?(e=(d=f)&&d.length,b=c=null,a):d},a.padding=function(d){return arguments.length?(f=d,b=c=null,a):f},a.sortGroups=function(d){return arguments.length?(g=d,b=c=null,a):g},a.sortSubgroups=function(c){return arguments.length?(h=c,b=null,a):h},a.sortChords=function(c){return arguments.length?(i=c,b&&k(),a):i},a.chords=function(){return b||j(),b},a.groups=function(){return c||j(),c},a},d3.layout.force=function(){function t(a){return function(b,c,d,e,f){if(b.point!==a){var g=b.cx-a.x,h=b.cy-a.y,i=1/Math.sqrt(g*g+h*h);if((e-c)*i<k){var j=b.charge*i*i;return a.px-=g*j,a.py-=h*j,!0}if(b.point&&isFinite(i)){var j=b.pointCharge*i*i;a.px-=g*j,a.py-=h*j}}return!b.charge}}function u(b){dL(dK=b),dJ=a}var a={},b=d3.dispatch("start","tick","end"),c=[1,1],d,e,f=.9,g=dQ,h=dR,i=-30,j=.1,k=.8,l,n=[],o=[],q,r,s;return a.tick=function(){if((e*=.99)<.005)return b.end({type:"end",alpha:e=0}),!0;var a=n.length,d=o.length,g,h,k,l,m,p,u,v,w;for(h=0;h<d;++h){k=o[h],l=k.source,m=k.target,v=m.x-l.x,w=m.y-l.y;if(p=v*v+w*w)p=e*r[h]*((p=Math.sqrt(p))-q[h])/p,v*=p,w*=p,m.x-=v*(u=l.weight/(m.weight+l.weight)),m.y-=w*u,l.x+=v*(u=1-u),l.y+=w*u}if(u=e*j){v=c[0]/2,w=c[1]/2,h=-1;if(u)while(++h<a)k=n[h],k.x+=(v-k.x)*u,k.y+=(w-k.y)*u}if(i){dP(g=d3.geom.quadtree(n),e,s),h=-1;while(++h<a)(k=n[h]).fixed||g.visit(t(k))}h=-1;while(++h<a)k=n[h],k.fixed?(k.x=k.px,k.y=k.py):(k.x-=(k.px-(k.px=k.x))*f,k.y-=(k.py-(k.py=k.y))*f);b.tick({type:"tick",alpha:e})},a.nodes=function(b){return arguments.length?(n=b,a):n},a.links=function(b){return arguments.length?(o=b,a):o},a.size=function(b){return arguments.length?(c=b,a):c},a.linkDistance=function(b){return arguments.length?(g=p(b),a):g},a.distance=a.linkDistance,a.linkStrength=function(b){return arguments.length?(h=p(b),a):h},a.friction=function(b){return arguments.length?(f=b,a):f},a.charge=function(b){return arguments.length?(i=typeof b=="function"?b:+b,a):i},a.gravity=function(b){return arguments.length?(j=b,a):j},a.theta=function(b){return arguments.length?(k=b,a):k},a.alpha=function(c){return arguments.length?(e?c>0?e=c:e=0:c>0&&(b.start({type:"start",alpha:e=c}),d3.timer(a.tick)),a):e},a.start=function(){function p(a,c){var d=t(b),e=-1,f=d.length,g;while(++e<f)if(!isNaN(g=d[e][a]))return g;return Math.random()*c}function t(){if(!l){l=[];for(d=0;d<e;++d)l[d]=[];for(d=0;d<f;++d){var a=o[d];l[a.source.index].push(a.target),l[a.target.index].push(a.source)}}return l[b]}var b,d,e=n.length,f=o.length,j=c[0],k=c[1],l,m;for(b=0;b<e;++b)(m=n[b]).index=b,m.weight=0;q=[],r=[];for(b=0;b<f;++b)m=o[b],typeof m.source=="number"&&(m.source=n[m.source]),typeof m.target=="number"&&(m.target=n[m.target]),q[b]=g.call(this,m,b),r[b]=h.call(this,m,b),++m.source.weight,++m.target.weight;for(b=0;b<e;++b)m=n[b],isNaN(m.x)&&(m.x=p("x",j)),isNaN(m.y)&&(m.y=p("y",k)),isNaN(m.px)&&(m.px=m.x),isNaN(m.py)&&(m.py=m.y);s=[];if(typeof i=="function")for(b=0;b<e;++b)s[b]=+i.call(this,n[b],b);else for(b=0;b<e;++b)s[b]=i;return a.resume()},a.resume=function(){return a.alpha(.1)},a.stop=function(){return a.alpha(0)},a.drag=function(){d||(d=d3.behavior.drag().origin(m).on("dragstart",u).on("drag",dO).on("dragend",dN)),this.on("mouseover.force",dL).on("mouseout.force",dM).call(d)},d3.rebind(a,b,"on")};var dJ,dK;d3.layout.partition=function(){function c(a,b,d,e){var f=a.children;a.x=b,a.y=a.depth*e,a.dx=d,a.dy=e;if(f&&(h=f.length)){var g=-1,h,i,j;d=a.value?d/a.value:0;while(++g<h)c(i=f[g],b,j=i.value*d,e),b+=j}}function d(a){var b=a.children,c=0;if(b&&(f=b.length)){var e=-1,f;while(++e<f)c=Math.max(c,d(b[e]))}return 1+c}function e(e,f){var g=a.call(this,e,f);return c(g[0],0,b[0],b[1]/d(g[0])),g}var a=d3.layout.hierarchy(),b=[1,1];return e.size=function(a){return arguments.length?(b=a,e):b},ee(e,a)},d3.layout.pie=function(){function e(f,g){var h=f.map(function(b,c){return+a.call(e,b,c)}),i=+(typeof c=="function"?c.apply(this,arguments):c),j=((typeof d=="function"?d.apply(this,arguments):d)-c)/d3.sum(h),k=d3.range(f.length);b!=null&&k.sort(b===dS?function(a,b){return h[b]-h[a]}:function(a,c){return b(f[a],f[c])});var l=[];return k.forEach(function(a){var b;l[a]={data:f[a],value:b=h[a],startAngle:i,endAngle:i+=b*j}}),l}var a=Number,b=dS,c=0,d=2*Math.PI;return e.value=function(b){return arguments.length?(a=b,e):a},e.sort=function(a){return arguments.length?(b=a,e):b},e.startAngle=function(a){return arguments.length?(c=a,e):c},e.endAngle=function(a){return arguments.length?(d=a,e):d},e};var dS={};d3.layout.stack=function(){function g(h,i){var j=h.map(function(b,c){return a.call(g,b,c)}),k=j.map(function(a,b){return a.map(function(a,b){return[e.call(g,a,b),f.call(g,a,b)]})}),l=b.call(g,k,i);j=d3.permute(j,l),k=d3.permute(k,l);var m=c.call(g,k,i),n=j.length,o=j[0].length,p,q,r;for(q=0;q<o;++q){d.call(g,j[0][q],r=m[q],k[0][q][1]);for(p=1;p<n;++p)d.call(g,j[p][q],r+=k[p-1][q][1],k[p][q][1])}return h}var a=m,b=dY,c=dZ,d=dV,e=dT,f=dU;return g.values=function(b){return arguments.length?(a=b,g):a},g.order=function(a){return arguments.length?(b=typeof a=="function"?a:dW.get(a)||dY,g):b},g.offset=function(a){return arguments.length?(c=typeof a=="function"?a:dX.get(a)||dZ,g):c},g.x=function(a){return arguments.length?(e=a,g):e},g.y=function(a){return arguments.length?(f=a,g):f},g.out=function(a){return arguments.length?(d=a,g):d},g};var dW=d3.map({"inside-out":function(a){var b=a.length,c,d,e=a.map(d$),f=a.map(d_),g=d3.range(b).sort(function(a,b){return e[a]-e[b]}),h=0,i=0,j=[],k=[];for(c=0;c<b;++c)d=g[c],h<i?(h+=f[d],j.push(d)):(i+=f[d],k.push(d));return k.reverse().concat(j)},reverse:function(a){return d3.range(a.length).reverse()},"default":dY}),dX=d3.map({silhouette:function(a){var b=a.length,c=a[0].length,d=[],e=0,f,g,h,i=[];for(g=0;g<c;++g){for(f=0,h=0;f<b;f++)h+=a[f][g][1];h>e&&(e=h),d.push(h)}for(g=0;g<c;++g)i[g]=(e-d[g])/2;return i},wiggle:function(a){var b=a.length,c=a[0],d=c.length,e=0,f,g,h,i,j,k,l,m,n,o=[];o[0]=m=n=0;for(g=1;g<d;++g){for(f=0,i=0;f<b;++f)i+=a[f][g][1];for(f=0,j=0,l=c[g][0]-c[g-1][0];f<b;++f){for(h=0,k=(a[f][g][1]-a[f][g-1][1])/(2*l);h<f;++h)k+=(a[h][g][1]-a[h][g-1][1])/l;j+=k*a[f][g][1]}o[g]=m-=i?j/i*l:0,m<n&&(n=m)}for(g=0;g<d;++g)o[g]-=n;return o},expand:function(a){var b=a.length,c=a[0].length,d=1/b,e,f,g,h=[];for(f=0;f<c;++f){for(e=0,g=0;e<b;e++)g+=a[e][f][1];if(g)for(e=0;e<b;e++)a[e][f][1]/=g;else for(e=0;e<b;e++)a[e][f][1]=d}for(f=0;f<c;++f)h[f]=0;return h},zero:dZ});d3.layout.histogram=function(){function e(e,f){var g=[],h=e.map(b,this),i=c.call(this,h,f),j=d.call(this,i,h,f),k,f=-1,l=h.length,m=j.length-1,n=a?1:1/l,o;while(++f<m)k=g[f]=[],k.dx=j[f+1]-(k.x=j[f]),k.y=0;if(m>0){f=-1;while(++f<l)o=h[f],o>=i[0]&&o<=i[1]&&(k=g[d3.bisect(j,o,1,m)-1],k.y+=n,k.push(e[f]))}return g}var a=!0,b=Number,c=ed,d=eb;return e.value=function(a){return arguments.length?(b=a,e):b},e.range=function(a){return arguments.length?(c=p(a),e):c},e.bins=function(a){return arguments.length?(d=typeof a=="number"?function(b){return ec(b,a)}:p(a),e):d},e.frequency=function(b){return arguments.length?(a=!!b,e):a},e},d3.layout.hierarchy=function(){function d(e,g,h){var i=b.call(f,e,g),j=ej?e:{data:e};j.depth=g,h.push(j);if(i&&(l=i.length)){var k=-1,l,m=j.children=[],n=0,o=g+1,p;while(++k<l)p=d(i[k],o,h),p.parent=j,m.push(p),n+=p.value;a&&m.sort(a),c&&(j.value=n)}else c&&(j.value=+c.call(f,e,g)||0);return j}function e(a,b){var d=a.children,g=0;if(d&&(i=d.length)){var h=-1,i,j=b+1;while(++h<i)g+=e(d[h],j)}else c&&(g=+c.call(f,ej?a:a.data,b)||0);return c&&(a.value=g),g}function f(a){var b=[];return d(a,0,b),b}var a=eh,b=ef,c=eg;return f.sort=function(b){return arguments.length?(a=b,f):a},f.children=function(a){return arguments.length?(b=a,f):b},f.value=function(a){return arguments.length?(c=a,f):c},f.revalue=function(a){return e(a,0),a},f};var ej=!1;d3.layout.pack=function(){function c(c,d){var e=a.call(this,c,d),f=e[0];f.x=0,f.y=0,er(f);var g=b[0],h=b[1],i=1/Math.max(2*f.r/g,2*f.r/h);return es(f,g/2,h/2,i),e}var a=d3.layout.hierarchy().sort(ek),b=[1,1];return c.size=function(a){return arguments.length?(b=a,c):b},ee(c,a)},d3.layout.cluster=function(){function d(d,e){var f=a.call(this,d,e),g=f[0],h,i=0,j,k;eF(g,function(a){var c=a.children;c&&c.length?(a.x=ev(c),a.y=eu(c)):(a.x=h?i+=b(a,h):0,a.y=0,h=a)});var l=ew(g),m=ex(g),n=l.x-b(l,m)/2,o=m.x+b(m,l)/2;return eF(g,function(a){a.x=(a.x-n)/(o-n)*c[0],a.y=(1-(g.y?a.y/g.y:1))*c[1]}),f}var a=d3.layout.hierarchy().sort(null).value(null),b=ey,c=[1,1];return d.separation=function(a){return arguments.length?(b=a,d):b},d.size=function(a){return arguments.length?(c=a,d):c},ee(d,a)},d3.layout.tree=function(){function d(d,e){function h(a,c){var d=a.children,e=a._tree;if(d&&(f=d.length)){var f,g=d[0],i,k=g,l,m=-1;while(++m<f)l=d[m],h(l,i),k=j(l,i,k),i=l;eG(a);var n=.5*(g._tree.prelim+l._tree.prelim);c?(e.prelim=c._tree.prelim+b(a,c),e.mod=e.prelim-n):e.prelim=n}else c&&(e.prelim=c._tree.prelim+b(a,c))}function i(a,b){a.x=a._tree.prelim+b;var c=a.children;if(c&&(e=c.length)){var d=-1,e;b+=a._tree.mod;while(++d<e)i(c[d],b)}}function j(a,c,d){if(c){var e=a,f=a,g=c,h=a.parent.children[0],i=e._tree.mod,j=f._tree.mod,k=g._tree.mod,l=h._tree.mod,m;while(g=eA(g),e=ez(e),g&&e)h=ez(h),f=eA(f),f._tree.ancestor=a,m=g._tree.prelim+k-e._tree.prelim-i+b(g,e),m>0&&(eH(eI(g,a,d),a,m),i+=m,j+=m),k+=g._tree.mod,i+=e._tree.mod,l+=h._tree.mod,j+=f._tree.mod;g&&!eA(f)&&(f._tree.thread=g,f._tree.mod+=k-j),e&&!ez(h)&&(h._tree.thread=e,h._tree.mod+=i-l,d=a)}return d}var f=a.call(this,d,e),g=f[0];eF(g,function(a,b){a._tree={ancestor:a,prelim:0,mod:0,change:0,shift:0,number:b?b._tree.number+1:0}}),h(g),i(g,-g._tree.prelim);var k=eB(g,eD),l=eB(g,eC),m=eB(g,eE),n=k.x-b(k,l)/2,o=l.x+b(l,k)/2,p=m.depth||1;return eF(g,function(a){a.x=(a.x-n)/(o-n)*c[0],a.y=a.depth/p*c[1],delete a._tree}),f}var a=d3.layout.hierarchy().sort(null).value(null),b=ey,c=[1,1];return d.separation=function(a){return arguments.length?(b=a,d):b},d.size=function(a){return arguments.length?(c=a,d):c},ee(d,a)},d3.layout.treemap=function(){function i(a,b){var c=-1,d=a.length,e,f;while(++c<d)f=(e=a[c]).value*(b<0?0:b),e.area=isNaN(f)||f<=0?0:f}function j(a){var b=a.children;if(b&&b.length){var c=e(a),d=[],f=b.slice(),g,h=Infinity,k,n=Math.min(c.dx,c.dy),o;i(f,c.dx*c.dy/a.value),d.area=0;while((o=f.length)>0)d.push(g=f[o-1]),d.area+=g.area,(k=l(d,n))<=h?(f.pop(),h=k):(d.area-=d.pop().area,m(d,n,c,!1),n=Math.min(c.dx,c.dy),d.length=d.area=0,h=Infinity);d.length&&(m(d,n,c,!0),d.length=d.area=0),b.forEach(j)}}function k(a){var b=a.children;if(b&&b.length){var c=e(a),d=b.slice(),f,g=[];i(d,c.dx*c.dy/a.value),g.area=0;while(f=d.pop())g.push(f),g.area+=f.area,f.z!=null&&(m(g,f.z?c.dx:c.dy,c,!d.length),g.length=g.area=0);b.forEach(k)}}function l(a,b){var c=a.area,d,e=0,f=Infinity,g=-1,i=a.length;while(++g<i){if(!(d=a[g].area))continue;d<f&&(f=d),d>e&&(e=d)}return c*=c,b*=b,c?Math.max(b*e*h/c,c/(b*f*h)):Infinity}function m(a,c,d,e){var f=-1,g=a.length,h=d.x,i=d.y,j=c?b(a.area/c):0,k;if(c==d.dx){if(e||j>d.dy)j=d.dy;while(++f<g)k=a[f],k.x=h,k.y=i,k.dy=j,h+=k.dx=Math.min(d.x+d.dx-h,j?b(k.area/j):0);k.z=!0,k.dx+=d.x+d.dx-h,d.y+=j,d.dy-=j}else{if(e||j>d.dx)j=d.dx;while(++f<g)k=a[f],k.x=h,k.y=i,k.dx=j,i+=k.dy=Math.min(d.y+d.dy-i,j?b(k.area/j):0);k.z=!1,k.dy+=d.y+d.dy-i,d.x+=j,d.dx-=j}}function n(b){var d=g||a(b),e=d[0];return e.x=0,e.y=0,e.dx=c[0],e.dy=c[1],g&&a.revalue(e),i([e],e.dx*e.dy/e.value),(g?k:j)(e),f&&(g=d),d}var a=d3.layout.hierarchy(),b=Math.round,c=[1,1],d=null,e=eJ,f=!1,g,h=.5*(1+Math.sqrt(5));return n.size=function(a){return arguments.length?(c=a,n):c},n.padding=function(a){function b(b){var c=a.call(n,b,b.depth);return c==null?eJ(b):eK(b,typeof c=="number"?[c,c,c,c]:c)}function c(b){return eK(b,a)}if(!arguments.length)return d;var f;return e=(d=a)==null?eJ:(f=typeof a)==="function"?b:f==="number"?(a=[a,a,a,a],c):c,n},n.round=function(a){return arguments.length?(b=a?Math.round:Number,n):b!=Number},n.sticky=function(a){return arguments.length?(f=a,g=null,n):f},n.ratio=function(a){return arguments.length?(h=a,n):h},ee(n,a)},d3.csv=function(a,b){d3.text(a,"text/csv",function(a){b(a&&d3.csv.parse(a))})},d3.csv.parse=function(a){var b;return d3.csv.parseRows(a,function(a,c){if(c){var d={},e=-1,f=b.length;while(++e<f)d[b[e]]=a[e];return d}return b=a,null})},d3.csv.parseRows=function(a,b){function j(){if(f.lastIndex>=a.length)return d;if(i)return i=!1,c;var b=f.lastIndex;if(a.charCodeAt(b)===34){var e=b;while(e++<a.length)if(a.charCodeAt(e)===34){if(a.charCodeAt(e+1)!==34)break;e++}f.lastIndex=e+2;var g=a.charCodeAt(e+1);return g===13?(i=!0,a.charCodeAt(e+2)===10&&f.lastIndex++):g===10&&(i=!0),a.substring(b+1,e).replace(/""/g,'"')}var h=f.exec(a);return h?(i=h[0].charCodeAt(0)!==44,a.substring(b,h.index)):(f.lastIndex=a.length,a.substring(b))}var c={},d={},e=[],f=/\r\n|[,\r\n]/g,g=0,h,i;f.lastIndex=0;while((h=j())!==d){var k=[];while(h!==c&&h!==d)k.push(h),h=j();if(b&&!(k=b(k,g++)))continue;e.push(k)}return e},d3.csv.format=function(a){return a.map(eL).join("\n")},d3.geo={};var eN=Math.PI/180;d3.geo.azimuthal=function(){function i(b){var f=b[0]*eN-e,i=b[1]*eN,j=Math.cos(f),k=Math.sin(f),l=Math.cos(i),m=Math.sin(i),n=a!=="orthographic"?h*m+g*l*j:null,o,p=a==="stereographic"?1/(1+n):a==="gnomonic"?1/n:a==="equidistant"?(o=Math.acos(n),o?o/Math.sin(o):0):a==="equalarea"?Math.sqrt(2/(1+n)):1,q=p*l*k,r=p*(h*l*j-g*m);return[c*q+d[0],c*r+d[1]]}var a="orthographic",b,c=200,d=[480,250],e,f,g,h;return i.invert=function(b){var f=(b[0]-d[0])/c,i=(b[1]-d[1])/c,j=Math.sqrt(f*f+i*i),k=a==="stereographic"?2*Math.atan(j):a==="gnomonic"?Math.atan(j):a==="equidistant"?j:a==="equalarea"?2*Math.asin(.5*j):Math.asin(j),l=Math.sin(k),m=Math.cos(k);return[(e+Math.atan2(f*l,j*g*m+i*h*l))/eN,Math.asin(m*h-(j?i*l*g/j:0))/eN]},i.mode=function(b){return arguments.length?(a=b+"",i):a},i.origin=function(a){return arguments.length?(b=a,e=b[0]*eN,f=b[1]*eN,g=Math.cos(f),h=Math.sin(f),i):b},i.scale=function(a){return arguments.length?(c=+a,i):c},i.translate=function(a){return arguments.length?(d=[+a[0],+a[1]],i):d},i.origin([0,0])},d3.geo.albers=function(){function i(a){var b=f*(eN*a[0]-e),i=Math.sqrt(g-2*f*Math.sin(eN*a[1]))/f;return[c*i*Math.sin(b)+d[0],c*(i*Math.cos(b)-h)+d[1]]}function j(){var c=eN*b[0],d=eN*b[1],j=eN*a[1],k=Math.sin(c),l=Math.cos(c);return e=eN*a[0],f=.5*(k+Math.sin(d)),g=l*l+2*f*k,h=Math.sqrt(g-2*f*Math.sin(j))/f,i}var a=[-98,38],b=[29.5,45.5],c=1e3,d=[480,250],e,f,g,h;return i.invert=function(a){var b=(a[0]-d[0])/c,i=(a[1]-d[1])/c,j=h+i,k=Math.atan2(b,j),l=Math.sqrt(b*b+j*j);return[(e+k/f)/eN,Math.asin((g-l*l*f*f)/(2*f))/eN]},i.origin=function(b){return arguments.length?(a=[+b[0],+b[1]],j()):a},i.parallels=function(a){return arguments.length?(b=[+a[0],+a[1]],j()):b},i.scale=function(a){return arguments.length?(c=+a,i):c},i.translate=function(a){return arguments.length?(d=[+a[0],+a[1]],i):d},j()},d3.geo.albersUsa=function(){function e(e){var f=e[0],g=e[1];return(g>50?b:f<-140?c:g<21?d:a)(e)}var a=d3.geo.albers(),b=d3.geo.albers().origin([-160,60]).parallels([55,65]),c=d3.geo.albers().origin([-160,20]).parallels([8,18]),d=d3.geo.albers().origin([-60,10]).parallels([8,18]);return e.scale=function(f){return arguments.length?(a.scale(f),b.scale(f*.6),c.scale(f),d.scale(f*1.5),e.translate(a.translate())):a.scale()},e.translate=function(f){if(!arguments.length)return a.translate();var g=a.scale()/1e3,h=f[0],i=f[1];return a.translate(f),b.translate([h-400*g,i+170*g]),c.translate([h-190*g,i+200*g]),d.translate([h+580*g,i+430*g]),e},e.scale(a.scale())},d3.geo.bonne=function(){function g(g){var h=g[0]*eN-c,i=g[1]*eN-d;if(e){var j=f+e-i,k=h*Math.cos(i)/j;h=j*Math.sin(k),i=j*Math.cos(k)-f}else h*=Math.cos(i),i*=-1;return[a*h+b[0],a*i+b[1]]}var a=200,b=[480,250],c,d,e,f;return g.invert=function(d){var g=(d[0]-b[0])/a,h=(d[1]-b[1])/a;if(e){var i=f+h,j=Math.sqrt(g*g+i*i);h=f+e-j,g=c+j*Math.atan2(g,i)/Math.cos(h)}else h*=-1,g/=Math.cos(h);return[g/eN,h/eN]},g.parallel=function(a){return arguments.length?(f=1/Math.tan(e=a*eN),g):e/eN},g.origin=function(a){return arguments.length?(c=a[0]*eN,d=a[1]*eN,g):[c/eN,d/eN]},g.scale=function(b){return arguments.length?(a=+b,g):a},g.translate=function(a){return arguments.length?(b=[+a[0],+a[1]],g):b},g.origin([0,0]).parallel(45)},d3.geo.equirectangular=function(){function c(c){var d=c[0]/360,e=-c[1]/360;return[a*d+b[0],a*e+b[1]]}var a=500,b=[480,250];return c.invert=function(c){var d=(c[0]-b[0])/a,e=(c[1]-b[1])/a;return[360*d,-360*e]},c.scale=function(b){return arguments.length?(a=+b,c):a},c.translate=function(a){return arguments.length?(b=[+a[0],+a[1]],c):b},c},d3.geo.mercator=function(){function c(c){var d=c[0]/360,e=-(Math.log(Math.tan(Math.PI/4+c[1]*eN/2))/eN)/360;return[a*d+b[0],a*Math.max(-0.5,Math.min(.5,e))+b[1]]}var a=500,b=[480,250];return c.invert=function(c){var d=(c[0]-b[0])/a,e=(c[1]-b[1])/a;return[360*d,2*Math.atan(Math.exp(-360*e*eN))/eN-90]},c.scale=function(b){return arguments.length?(a=+b,c):a},c.translate=function(a){return arguments.length?(b=[+a[0],+a[1]],c):b},c},d3.geo.path=function(){function e(c,e){typeof a=="function"&&(b=eP(a.apply(this,arguments))),g(c);var f=d.length?d.join(""):null;return d=[],f}function f(a){return c(a).join(",")}function i(a){var b=l(a[0]),c=0,d=a.length;while(++c<d)b-=l(a[c]);return b}function j(a){var b=d3.geom.polygon(a[0].map(c)),d=b.area(),e=b.centroid(d<0?(d*=-1,1):-1),f=e[0],g=e[1],h=d,i=0,j=a.length;while(++i<j)b=d3.geom.polygon(a[i].map(c)),d=b.area(),e=b.centroid(d<0?(d*=-1,1):-1),f-=e[0],g-=e[1],h-=d;return[f,g,6*h]}function l(a){return Math.abs(d3.geom.polygon(a.map(c)).area())}var a=4.5,b=eP(a),c=d3.geo.albersUsa(),d=[],g=eO({FeatureCollection:function(a){var b=a.features,c=-1,e=b.length;while(++c<e)d.push(g(b[c].geometry))},Feature:function(a){g(a.geometry)},Point:function(a){d.push("M",f(a.coordinates),b)},MultiPoint:function(a){var c=a.coordinates,e=-1,g=c.length;while(++e<g)d.push("M",f(c[e]),b)},LineString:function(a){var b=a.coordinates,c=-1,e=b.length;d.push("M");while(++c<e)d.push(f(b[c]),"L");d.pop()},MultiLineString:function(a){var b=a.coordinates,c=-1,e=b.length,g,h,i;while(++c<e){g=b[c],h=-1,i=g.length,d.push("M");while(++h<i)d.push(f(g[h]),"L");d.pop()}},Polygon:function(a){var b=a.coordinates,c=-1,e=b.length,g,h,i;while(++c<e){g=b[c],h=-1;if((i=g.length-1)>0){d.push("M");while(++h<i)d.push(f(g[h]),"L");d[d.length-1]="Z"}}},MultiPolygon:function(a){var b=a.coordinates,c=-1,e=b.length,g,h,i,j,k,l;while(++c<e){g=b[c],h=-1,i=g.length;while(++h<i){j=g[h],k=-1;if((l=j.length-1)>0){d.push("M");while(++k<l)d.push(f(j[k]),"L");d[d.length-1]="Z"}}}},GeometryCollection:function(a){var b=a.geometries,c=-1,e=b.length;while(++c<e)d.push(g(b[c]))}}),h=e.area=eO({FeatureCollection:function(a){var b=0,c=a.features,d=-1,e=c.length;while(++d<e)b+=h(c[d]);return b},Feature:function(a){return h(a.geometry)},Polygon:function(a){return i(a.coordinates)},MultiPolygon:function(a){var b=0,c=a.coordinates,d=-1,e=c.length;while(++d<e)b+=i(c[d]);return b},GeometryCollection:function(a){var b=0,c=a.geometries,d=-1,e=c.length;while(++d<e)b+=h(c[d]);return b}},0),k=e.centroid=eO({Feature:function(a){return k(a.geometry)},Polygon:function(a){var b=j(a.coordinates);return[b[0]/b[2],b[1]/b[2]]},MultiPolygon:function(a){var b=0,c=a.coordinates,d,e=0,f=0,g=0,h=-1,i=c.length;while(++h<i)d=j(c[h]),e+=d[0],f+=d[1],g+=d[2];return[e/g,f/g]}});return e.projection=function(a){return c=a,e},e.pointRadius=function(c){return typeof c=="function"?a=c:(a=+c,b=eP(a)),e},e},d3.geo.bounds=function(a){var b=Infinity,c=Infinity,d=-Infinity,e=-Infinity;return eQ(a,function(a,f){a<b&&(b=a),a>d&&(d=a),f<c&&(c=f),f>e&&(e=f)}),[[b,c],[d,e]]};var eR={Feature:eS,FeatureCollection:eT,GeometryCollection:eU,LineString:eV,MultiLineString:eW,MultiPoint:eV,MultiPolygon:eX,Point:eY,Polygon:eZ};d3.geo.circle=function(){function e(){}function f(a){return d.distance(a)<c}function h(a){var b=-1,e=a.length,f=[],g,h,j,k,l;while(++b<e)l=d.distance(j=a[b]),l<c?(h&&f.push(fb(h,j)((k-c)/(k-l))),f.push(j),g=h=null):(h=j,!g&&f.length&&(f.push(fb(f[f.length-1],h)((c-k)/(l-k))),g=h)),k=l;return g=a[0],h=f[0],h&&j[0]===g[0]&&j[1]===g[1]&&(j[0]!==h[0]||j[1]!==h[1])&&f.push(h),i(f)}function i(a){var b=0,c=a.length,e,f,g=c?[a[0]]:a,h,i=d.source();while(++b<c){h=d.source(a[b-1])(a[b]).coordinates;for(e=0,f=h.length;++e<f;)g.push(h[e])}return d.source(i),g}var a=[0,0],b=89.99,c=b*eN,d=d3.geo.greatArc().source(a).target(m);e.clip=function(b){return typeof a=="function"&&d.source(a.apply(this,arguments)),g(b)||null};var g=eO({FeatureCollection:function(a){var b=a.features.map(g)
+.filter(m);return b&&(a=Object.create(a),a.features=b,a)},Feature:function(a){var b=g(a.geometry);return b&&(a=Object.create(a),a.geometry=b,a)},Point:function(a){return f(a.coordinates)&&a},MultiPoint:function(a){var b=a.coordinates.filter(f);return b.length&&{type:a.type,coordinates:b}},LineString:function(a){var b=h(a.coordinates);return b.length&&(a=Object.create(a),a.coordinates=b,a)},MultiLineString:function(a){var b=a.coordinates.map(h).filter(function(a){return a.length});return b.length&&(a=Object.create(a),a.coordinates=b,a)},Polygon:function(a){var b=a.coordinates.map(h);return b[0].length&&(a=Object.create(a),a.coordinates=b,a)},MultiPolygon:function(a){var b=a.coordinates.map(function(a){return a.map(h)}).filter(function(a){return a[0].length});return b.length&&(a=Object.create(a),a.coordinates=b,a)},GeometryCollection:function(a){var b=a.geometries.map(g).filter(m);return b.length&&(a=Object.create(a),a.geometries=b,a)}});return e.origin=function(b){return arguments.length?(a=b,typeof a!="function"&&d.source(a),e):a},e.angle=function(a){return arguments.length?(c=(b=+a)*eN,e):b},d3.rebind(e,d,"precision")},d3.geo.greatArc=function(){function g(){var a=g.distance.apply(this,arguments),c=0,h=e/a,i=[b];while((c+=h)<1)i.push(f(c));return i.push(d),{type:"LineString",coordinates:i}}var a=e$,b,c=e_,d,e=6*eN,f=fa();return g.distance=function(){return typeof a=="function"&&f.source(b=a.apply(this,arguments)),typeof c=="function"&&f.target(d=c.apply(this,arguments)),f.distance()},g.source=function(c){return arguments.length?(a=c,typeof a!="function"&&f.source(b=a),g):a},g.target=function(a){return arguments.length?(c=a,typeof c!="function"&&f.target(d=c),g):c},g.precision=function(a){return arguments.length?(e=a*eN,g):e/eN},g},d3.geo.greatCircle=d3.geo.circle,d3.geom={},d3.geom.contour=function(a,b){var c=b||fe(a),d=[],e=c[0],f=c[1],g=0,h=0,i=NaN,j=NaN,k=0;do k=0,a(e-1,f-1)&&(k+=1),a(e,f-1)&&(k+=2),a(e-1,f)&&(k+=4),a(e,f)&&(k+=8),k===6?(g=j===-1?-1:1,h=0):k===9?(g=0,h=i===1?-1:1):(g=fc[k],h=fd[k]),g!=i&&h!=j&&(d.push([e,f]),i=g,j=h),e+=g,f+=h;while(c[0]!=e||c[1]!=f);return d};var fc=[1,0,1,1,-1,0,-1,1,0,0,0,0,-1,0,-1,NaN],fd=[0,-1,0,0,0,-1,0,0,1,-1,1,1,0,-1,0,NaN];d3.geom.hull=function(a){if(a.length<3)return[];var b=a.length,c=b-1,d=[],e=[],f,g,h=0,i,j,k,l,m,n,o,p;for(f=1;f<b;++f)a[f][1]<a[h][1]?h=f:a[f][1]==a[h][1]&&(h=a[f][0]<a[h][0]?f:h);for(f=0;f<b;++f){if(f===h)continue;j=a[f][1]-a[h][1],i=a[f][0]-a[h][0],d.push({angle:Math.atan2(j,i),index:f})}d.sort(function(a,b){return a.angle-b.angle}),o=d[0].angle,n=d[0].index,m=0;for(f=1;f<c;++f)g=d[f].index,o==d[f].angle?(i=a[n][0]-a[h][0],j=a[n][1]-a[h][1],k=a[g][0]-a[h][0],l=a[g][1]-a[h][1],i*i+j*j>=k*k+l*l?d[f].index=-1:(d[m].index=-1,o=d[f].angle,m=f,n=g)):(o=d[f].angle,m=f,n=g);e.push(h);for(f=0,g=0;f<2;++g)d[g].index!==-1&&(e.push(d[g].index),f++);p=e.length;for(;g<c;++g){if(d[g].index===-1)continue;while(!ff(e[p-2],e[p-1],d[g].index,a))--p;e[p++]=d[g].index}var q=[];for(f=0;f<p;++f)q.push(a[e[f]]);return q},d3.geom.polygon=function(a){return a.area=function(){var b=0,c=a.length,d=a[c-1][0]*a[0][1],e=a[c-1][1]*a[0][0];while(++b<c)d+=a[b-1][0]*a[b][1],e+=a[b-1][1]*a[b][0];return(e-d)*.5},a.centroid=function(b){var c=-1,d=a.length,e=0,f=0,g,h=a[d-1],i;arguments.length||(b=-1/(6*a.area()));while(++c<d)g=h,h=a[c],i=g[0]*h[1]-h[0]*g[1],e+=(g[0]+h[0])*i,f+=(g[1]+h[1])*i;return[e*b,f*b]},a.clip=function(b){var c,d=-1,e=a.length,f,g,h=a[e-1],i,j,k;while(++d<e){c=b.slice(),b.length=0,i=a[d],j=c[(g=c.length)-1],f=-1;while(++f<g)k=c[f],fg(k,h,i)?(fg(j,h,i)||b.push(fh(j,k,h,i)),b.push(k)):fg(j,h,i)&&b.push(fh(j,k,h,i)),j=k;h=i}return b},a},d3.geom.voronoi=function(a){var b=a.map(function(){return[]});return fj(a,function(a){var c,d,e,f,g,h;a.a===1&&a.b>=0?(c=a.ep.r,d=a.ep.l):(c=a.ep.l,d=a.ep.r),a.a===1?(g=c?c.y:-1e6,e=a.c-a.b*g,h=d?d.y:1e6,f=a.c-a.b*h):(e=c?c.x:-1e6,g=a.c-a.a*e,f=d?d.x:1e6,h=a.c-a.a*f);var i=[e,g],j=[f,h];b[a.region.l.index].push(i,j),b[a.region.r.index].push(i,j)}),b.map(function(b,c){var d=a[c][0],e=a[c][1];return b.forEach(function(a){a.angle=Math.atan2(a[0]-d,a[1]-e)}),b.sort(function(a,b){return a.angle-b.angle}).filter(function(a,c){return!c||a.angle-b[c-1].angle>1e-10})})};var fi={l:"r",r:"l"};d3.geom.delaunay=function(a){var b=a.map(function(){return[]}),c=[];return fj(a,function(c){b[c.region.l.index].push(a[c.region.r.index])}),b.forEach(function(b,d){var e=a[d],f=e[0],g=e[1];b.forEach(function(a){a.angle=Math.atan2(a[0]-f,a[1]-g)}),b.sort(function(a,b){return a.angle-b.angle});for(var h=0,i=b.length-1;h<i;h++)c.push([e,b[h],b[h+1]])}),c},d3.geom.quadtree=function(a,b,c,d,e){function k(a,b,c,d,e,f){if(isNaN(b.x)||isNaN(b.y))return;if(a.leaf){var g=a.point;g?Math.abs(g.x-b.x)+Math.abs(g.y-b.y)<.01?l(a,b,c,d,e,f):(a.point=null,l(a,g,c,d,e,f),l(a,b,c,d,e,f)):a.point=b}else l(a,b,c,d,e,f)}function l(a,b,c,d,e,f){var g=(c+e)*.5,h=(d+f)*.5,i=b.x>=g,j=b.y>=h,l=(j<<1)+i;a.leaf=!1,a=a.nodes[l]||(a.nodes[l]=fk()),i?c=g:e=g,j?d=h:f=h,k(a,b,c,d,e,f)}var f,g=-1,h=a.length;h&&isNaN(a[0].x)&&(a=a.map(fm));if(arguments.length<5)if(arguments.length===3)e=d=c,c=b;else{b=c=Infinity,d=e=-Infinity;while(++g<h)f=a[g],f.x<b&&(b=f.x),f.y<c&&(c=f.y),f.x>d&&(d=f.x),f.y>e&&(e=f.y);var i=d-b,j=e-c;i>j?e=c+i:d=b+j}var m=fk();return m.add=function(a){k(m,a,b,c,d,e)},m.visit=function(a){fl(a,m,b,c,d,e)},a.forEach(m.add),m},d3.time={};var fn=Date;fo.prototype={getDate:function(){return this._.getUTCDate()},getDay:function(){return this._.getUTCDay()},getFullYear:function(){return this._.getUTCFullYear()},getHours:function(){return this._.getUTCHours()},getMilliseconds:function(){return this._.getUTCMilliseconds()},getMinutes:function(){return this._.getUTCMinutes()},getMonth:function(){return this._.getUTCMonth()},getSeconds:function(){return this._.getUTCSeconds()},getTime:function(){return this._.getTime()},getTimezoneOffset:function(){return 0},valueOf:function(){return this._.valueOf()},setDate:function(){fp.setUTCDate.apply(this._,arguments)},setDay:function(){fp.setUTCDay.apply(this._,arguments)},setFullYear:function(){fp.setUTCFullYear.apply(this._,arguments)},setHours:function(){fp.setUTCHours.apply(this._,arguments)},setMilliseconds:function(){fp.setUTCMilliseconds.apply(this._,arguments)},setMinutes:function(){fp.setUTCMinutes.apply(this._,arguments)},setMonth:function(){fp.setUTCMonth.apply(this._,arguments)},setSeconds:function(){fp.setUTCSeconds.apply(this._,arguments)},setTime:function(){fp.setTime.apply(this._,arguments)}};var fp=Date.prototype;d3.time.format=function(a){function c(c){var d=[],e=-1,f=0,g,h;while(++e<b)a.charCodeAt(e)==37&&(d.push(a.substring(f,e),(h=fv[g=a.charAt(++e)])?h(c):g),f=e+1);return d.push(a.substring(f,e)),d.join("")}var b=a.length;return c.parse=function(b){var c={y:1900,m:0,d:1,H:0,M:0,S:0,L:0},d=fq(c,a,b,0);if(d!=b.length)return null;"p"in c&&(c.H=c.H%12+c.p*12);var e=new fn;return e.setFullYear(c.y,c.m,c.d),e.setHours(c.H,c.M,c.S,c.L),e},c.toString=function(){return a},c};var fr=d3.format("02d"),fs=d3.format("03d"),ft=d3.format("04d"),fu=d3.format("2d"),fv={a:function(a){return fB[a.getDay()].substring(0,3)},A:function(a){return fB[a.getDay()]},b:function(a){return fH[a.getMonth()].substring(0,3)},B:function(a){return fH[a.getMonth()]},c:d3.time.format("%a %b %e %H:%M:%S %Y"),d:function(a){return fr(a.getDate())},e:function(a){return fu(a.getDate())},H:function(a){return fr(a.getHours())},I:function(a){return fr(a.getHours()%12||12)},j:function(a){return fs(1+d3.time.dayOfYear(a))},L:function(a){return fs(a.getMilliseconds())},m:function(a){return fr(a.getMonth()+1)},M:function(a){return fr(a.getMinutes())},p:function(a){return a.getHours()>=12?"PM":"AM"},S:function(a){return fr(a.getSeconds())},U:function(a){return fr(d3.time.sundayOfYear(a))},w:function(a){return a.getDay()},W:function(a){return fr(d3.time.mondayOfYear(a))},x:d3.time.format("%m/%d/%y"),X:d3.time.format("%H:%M:%S"),y:function(a){return fr(a.getFullYear()%100)},Y:function(a){return ft(a.getFullYear()%1e4)},Z:fX,"%":function(a){return"%"}},fw={a:fx,A:fy,b:fC,B:fE,c:fI,d:fP,e:fP,H:fQ,I:fQ,L:fT,m:fO,M:fR,p:fV,S:fS,x:fJ,X:fK,y:fM,Y:fL},fz=/^(?:sun|mon|tue|wed|thu|fri|sat)/i,fA=/^(?:Sunday|Monday|Tuesday|Wednesday|Thursday|Friday|Saturday)/i,fB=["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"],fD=d3.map({jan:0,feb:1,mar:2,apr:3,may:4,jun:5,jul:6,aug:7,sep:8,oct:9,nov:10,dec:11}),fF=/^(?:January|February|March|April|May|June|July|August|September|October|November|December)/ig,fG=d3.map({january:0,february:1,march:2,april:3,may:4,june:5,july:6,august:7,september:8,october:9,november:10,december:11}),fH=["January","February","March","April","May","June","July","August","September","October","November","December"],fU=/\s*\d+/,fW=d3.map({am:0,pm:1});d3.time.format.utc=function(a){function c(a){try{fn=fo;var c=new fn;return c._=a,b(c)}finally{fn=Date}}var b=d3.time.format(a);return c.parse=function(a){try{fn=fo;var c=b.parse(a);return c&&c._}finally{fn=Date}},c.toString=b.toString,c};var fY=d3.time.format.utc("%Y-%m-%dT%H:%M:%S.%LZ");d3.time.format.iso=Date.prototype.toISOString?fZ:fY,fZ.parse=function(a){var b=new Date(a);return isNaN(b)?null:b},fZ.toString=fY.toString,d3.time.second=f$(function(a){return new fn(Math.floor(a/1e3)*1e3)},function(a,b){a.setTime(a.getTime()+Math.floor(b)*1e3)},function(a){return a.getSeconds()}),d3.time.seconds=d3.time.second.range,d3.time.seconds.utc=d3.time.second.utc.range,d3.time.minute=f$(function(a){return new fn(Math.floor(a/6e4)*6e4)},function(a,b){a.setTime(a.getTime()+Math.floor(b)*6e4)},function(a){return a.getMinutes()}),d3.time.minutes=d3.time.minute.range,d3.time.minutes.utc=d3.time.minute.utc.range,d3.time.hour=f$(function(a){var b=a.getTimezoneOffset()/60;return new fn((Math.floor(a/36e5-b)+b)*36e5)},function(a,b){a.setTime(a.getTime()+Math.floor(b)*36e5)},function(a){return a.getHours()}),d3.time.hours=d3.time.hour.range,d3.time.hours.utc=d3.time.hour.utc.range,d3.time.day=f$(function(a){return new fn(a.getFullYear(),a.getMonth(),a.getDate())},function(a,b){a.setDate(a.getDate()+b)},function(a){return a.getDate()-1}),d3.time.days=d3.time.day.range,d3.time.days.utc=d3.time.day.utc.range,d3.time.dayOfYear=function(a){var b=d3.time.year(a);return Math.floor((a-b)/864e5-(a.getTimezoneOffset()-b.getTimezoneOffset())/1440)},fB.forEach(function(a,b){a=a.toLowerCase(),b=7-b;var c=d3.time[a]=f$(function(a){return(a=d3.time.day(a)).setDate(a.getDate()-(a.getDay()+b)%7),a},function(a,b){a.setDate(a.getDate()+Math.floor(b)*7)},function(a){var c=d3.time.year(a).getDay();return Math.floor((d3.time.dayOfYear(a)+(c+b)%7)/7)-(c!==b)});d3.time[a+"s"]=c.range,d3.time[a+"s"].utc=c.utc.range,d3.time[a+"OfYear"]=function(a){var c=d3.time.year(a).getDay();return Math.floor((d3.time.dayOfYear(a)+(c+b)%7)/7)}}),d3.time.week=d3.time.sunday,d3.time.weeks=d3.time.sunday.range,d3.time.weeks.utc=d3.time.sunday.utc.range,d3.time.weekOfYear=d3.time.sundayOfYear,d3.time.month=f$(function(a){return new fn(a.getFullYear(),a.getMonth(),1)},function(a,b){a.setMonth(a.getMonth()+b)},function(a){return a.getMonth()}),d3.time.months=d3.time.month.range,d3.time.months.utc=d3.time.month.utc.range,d3.time.year=f$(function(a){return new fn(a.getFullYear(),0,1)},function(a,b){a.setFullYear(a.getFullYear()+b)},function(a){return a.getFullYear()}),d3.time.years=d3.time.year.range,d3.time.years.utc=d3.time.year.utc.range;var gg=[1e3,5e3,15e3,3e4,6e4,3e5,9e5,18e5,36e5,108e5,216e5,432e5,864e5,1728e5,6048e5,2592e6,7776e6,31536e6],gh=[[d3.time.second,1],[d3.time.second,5],[d3.time.second,15],[d3.time.second,30],[d3.time.minute,1],[d3.time.minute,5],[d3.time.minute,15],[d3.time.minute,30],[d3.time.hour,1],[d3.time.hour,3],[d3.time.hour,6],[d3.time.hour,12],[d3.time.day,1],[d3.time.day,2],[d3.time.week,1],[d3.time.month,1],[d3.time.month,3],[d3.time.year,1]],gi=[[d3.time.format("%Y"),function(a){return!0}],[d3.time.format("%B"),function(a){return a.getMonth()}],[d3.time.format("%b %d"),function(a){return a.getDate()!=1}],[d3.time.format("%a %d"),function(a){return a.getDay()&&a.getDate()!=1}],[d3.time.format("%I %p"),function(a){return a.getHours()}],[d3.time.format("%I:%M"),function(a){return a.getMinutes()}],[d3.time.format(":%S"),function(a){return a.getSeconds()}],[d3.time.format(".%L"),function(a){return a.getMilliseconds()}]],gj=d3.scale.linear(),gk=gd(gi);gh.year=function(a,b){return gj.domain(a.map(gf)).ticks(b).map(ge)},d3.time.scale=function(){return ga(d3.scale.linear(),gh,gk)};var gl=gh.map(function(a){return[a[0].utc,a[1]]}),gm=[[d3.time.format.utc("%Y"),function(a){return!0}],[d3.time.format.utc("%B"),function(a){return a.getUTCMonth()}],[d3.time.format.utc("%b %d"),function(a){return a.getUTCDate()!=1}],[d3.time.format.utc("%a %d"),function(a){return a.getUTCDay()&&a.getUTCDate()!=1}],[d3.time.format.utc("%I %p"),function(a){return a.getUTCHours()}],[d3.time.format.utc("%I:%M"),function(a){return a.getUTCMinutes()}],[d3.time.format.utc(":%S"),function(a){return a.getUTCSeconds()}],[d3.time.format.utc(".%L"),function(a){return a.getUTCMilliseconds()}]],gn=gd(gm);gl.year=function(a,b){return gj.domain(a.map(gp)).ticks(b).map(go)},d3.time.scale.utc=function(){return ga(d3.scale.linear(),gl,gn)}})();
\ No newline at end of file
diff --git a/v3/js/diff_match_patch.js b/v3/js/diff_match_patch.js
new file mode 100755
index 000000000..c41b51327
--- /dev/null
+++ b/v3/js/diff_match_patch.js
@@ -0,0 +1,49 @@
+(function(){function diff_match_patch(){this.Diff_Timeout=1;this.Diff_EditCost=4;this.Match_Threshold=0.5;this.Match_Distance=1E3;this.Patch_DeleteThreshold=0.5;this.Patch_Margin=4;this.Match_MaxBits=32}
+diff_match_patch.prototype.diff_main=function(a,b,c,d){"undefined"==typeof d&&(d=0>=this.Diff_Timeout?Number.MAX_VALUE:(new Date).getTime()+1E3*this.Diff_Timeout);if(null==a||null==b)throw Error("Null input. (diff_main)");if(a==b)return a?[[0,a]]:[];"undefined"==typeof c&&(c=!0);var e=c,f=this.diff_commonPrefix(a,b);c=a.substring(0,f);a=a.substring(f);b=b.substring(f);var f=this.diff_commonSuffix(a,b),g=a.substring(a.length-f);a=a.substring(0,a.length-f);b=b.substring(0,b.length-f);a=this.diff_compute_(a,
+b,e,d);c&&a.unshift([0,c]);g&&a.push([0,g]);this.diff_cleanupMerge(a);return a};
+diff_match_patch.prototype.diff_compute_=function(a,b,c,d){if(!a)return[[1,b]];if(!b)return[[-1,a]];var e=a.length>b.length?a:b,f=a.length>b.length?b:a,g=e.indexOf(f);return-1!=g?(c=[[1,e.substring(0,g)],[0,f],[1,e.substring(g+f.length)]],a.length>b.length&&(c[0][0]=c[2][0]=-1),c):1==f.length?[[-1,a],[1,b]]:(e=this.diff_halfMatch_(a,b))?(f=e[0],a=e[1],g=e[2],b=e[3],e=e[4],f=this.diff_main(f,g,c,d),c=this.diff_main(a,b,c,d),f.concat([[0,e]],c)):c&&100<a.length&&100<b.length?this.diff_lineMode_(a,b,
+d):this.diff_bisect_(a,b,d)};
+diff_match_patch.prototype.diff_lineMode_=function(a,b,c){var d=this.diff_linesToChars_(a,b);a=d.chars1;b=d.chars2;d=d.lineArray;a=this.diff_main(a,b,!1,c);this.diff_charsToLines_(a,d);this.diff_cleanupSemantic(a);a.push([0,""]);for(var e=d=b=0,f="",g="";b<a.length;){switch(a[b][0]){case 1:e++;g+=a[b][1];break;case -1:d++;f+=a[b][1];break;case 0:if(1<=d&&1<=e){a.splice(b-d-e,d+e);b=b-d-e;d=this.diff_main(f,g,!1,c);for(e=d.length-1;0<=e;e--)a.splice(b,0,d[e]);b+=d.length}d=e=0;g=f=""}b++}a.pop();return a};
+diff_match_patch.prototype.diff_bisect_=function(a,b,c){for(var d=a.length,e=b.length,f=Math.ceil((d+e)/2),g=f,h=2*f,j=Array(h),i=Array(h),k=0;k<h;k++)j[k]=-1,i[k]=-1;j[g+1]=0;i[g+1]=0;for(var k=d-e,q=0!=k%2,r=0,t=0,p=0,w=0,v=0;v<f&&!((new Date).getTime()>c);v++){for(var n=-v+r;n<=v-t;n+=2){var l=g+n,m;m=n==-v||n!=v&&j[l-1]<j[l+1]?j[l+1]:j[l-1]+1;for(var s=m-n;m<d&&s<e&&a.charAt(m)==b.charAt(s);)m++,s++;j[l]=m;if(m>d)t+=2;else if(s>e)r+=2;else if(q&&(l=g+k-n,0<=l&&l<h&&-1!=i[l])){var u=d-i[l];if(m>=
+u)return this.diff_bisectSplit_(a,b,m,s,c)}}for(n=-v+p;n<=v-w;n+=2){l=g+n;u=n==-v||n!=v&&i[l-1]<i[l+1]?i[l+1]:i[l-1]+1;for(m=u-n;u<d&&m<e&&a.charAt(d-u-1)==b.charAt(e-m-1);)u++,m++;i[l]=u;if(u>d)w+=2;else if(m>e)p+=2;else if(!q&&(l=g+k-n,0<=l&&(l<h&&-1!=j[l])&&(m=j[l],s=g+m-l,u=d-u,m>=u)))return this.diff_bisectSplit_(a,b,m,s,c)}}return[[-1,a],[1,b]]};
+diff_match_patch.prototype.diff_bisectSplit_=function(a,b,c,d,e){var f=a.substring(0,c),g=b.substring(0,d);a=a.substring(c);b=b.substring(d);f=this.diff_main(f,g,!1,e);e=this.diff_main(a,b,!1,e);return f.concat(e)};
+diff_match_patch.prototype.diff_linesToChars_=function(a,b){function c(a){for(var b="",c=0,f=-1,g=d.length;f<a.length-1;){f=a.indexOf("\n",c);-1==f&&(f=a.length-1);var r=a.substring(c,f+1),c=f+1;(e.hasOwnProperty?e.hasOwnProperty(r):void 0!==e[r])?b+=String.fromCharCode(e[r]):(b+=String.fromCharCode(g),e[r]=g,d[g++]=r)}return b}var d=[],e={};d[0]="";var f=c(a),g=c(b);return{chars1:f,chars2:g,lineArray:d}};
+diff_match_patch.prototype.diff_charsToLines_=function(a,b){for(var c=0;c<a.length;c++){for(var d=a[c][1],e=[],f=0;f<d.length;f++)e[f]=b[d.charCodeAt(f)];a[c][1]=e.join("")}};diff_match_patch.prototype.diff_commonPrefix=function(a,b){if(!a||!b||a.charAt(0)!=b.charAt(0))return 0;for(var c=0,d=Math.min(a.length,b.length),e=d,f=0;c<e;)a.substring(f,e)==b.substring(f,e)?f=c=e:d=e,e=Math.floor((d-c)/2+c);return e};
+diff_match_patch.prototype.diff_commonSuffix=function(a,b){if(!a||!b||a.charAt(a.length-1)!=b.charAt(b.length-1))return 0;for(var c=0,d=Math.min(a.length,b.length),e=d,f=0;c<e;)a.substring(a.length-e,a.length-f)==b.substring(b.length-e,b.length-f)?f=c=e:d=e,e=Math.floor((d-c)/2+c);return e};
+diff_match_patch.prototype.diff_commonOverlap_=function(a,b){var c=a.length,d=b.length;if(0==c||0==d)return 0;c>d?a=a.substring(c-d):c<d&&(b=b.substring(0,c));c=Math.min(c,d);if(a==b)return c;for(var d=0,e=1;;){var f=a.substring(c-e),f=b.indexOf(f);if(-1==f)return d;e+=f;if(0==f||a.substring(c-e)==b.substring(0,e))d=e,e++}};
+diff_match_patch.prototype.diff_halfMatch_=function(a,b){function c(a,b,c){for(var d=a.substring(c,c+Math.floor(a.length/4)),e=-1,g="",h,j,n,l;-1!=(e=b.indexOf(d,e+1));){var m=f.diff_commonPrefix(a.substring(c),b.substring(e)),s=f.diff_commonSuffix(a.substring(0,c),b.substring(0,e));g.length<s+m&&(g=b.substring(e-s,e)+b.substring(e,e+m),h=a.substring(0,c-s),j=a.substring(c+m),n=b.substring(0,e-s),l=b.substring(e+m))}return 2*g.length>=a.length?[h,j,n,l,g]:null}if(0>=this.Diff_Timeout)return null;
+var d=a.length>b.length?a:b,e=a.length>b.length?b:a;if(4>d.length||2*e.length<d.length)return null;var f=this,g=c(d,e,Math.ceil(d.length/4)),d=c(d,e,Math.ceil(d.length/2)),h;if(!g&&!d)return null;h=d?g?g[4].length>d[4].length?g:d:d:g;var j;a.length>b.length?(g=h[0],d=h[1],e=h[2],j=h[3]):(e=h[0],j=h[1],g=h[2],d=h[3]);h=h[4];return[g,d,e,j,h]};
+diff_match_patch.prototype.diff_cleanupSemantic=function(a){for(var b=!1,c=[],d=0,e=null,f=0,g=0,h=0,j=0,i=0;f<a.length;)0==a[f][0]?(c[d++]=f,g=j,h=i,i=j=0,e=a[f][1]):(1==a[f][0]?j+=a[f][1].length:i+=a[f][1].length,e&&(e.length<=Math.max(g,h)&&e.length<=Math.max(j,i))&&(a.splice(c[d-1],0,[-1,e]),a[c[d-1]+1][0]=1,d--,d--,f=0<d?c[d-1]:-1,i=j=h=g=0,e=null,b=!0)),f++;b&&this.diff_cleanupMerge(a);this.diff_cleanupSemanticLossless(a);for(f=1;f<a.length;){if(-1==a[f-1][0]&&1==a[f][0]){b=a[f-1][1];c=a[f][1];
+d=this.diff_commonOverlap_(b,c);e=this.diff_commonOverlap_(c,b);if(d>=e){if(d>=b.length/2||d>=c.length/2)a.splice(f,0,[0,c.substring(0,d)]),a[f-1][1]=b.substring(0,b.length-d),a[f+1][1]=c.substring(d),f++}else if(e>=b.length/2||e>=c.length/2)a.splice(f,0,[0,b.substring(0,e)]),a[f-1][0]=1,a[f-1][1]=c.substring(0,c.length-e),a[f+1][0]=-1,a[f+1][1]=b.substring(e),f++;f++}f++}};
+diff_match_patch.prototype.diff_cleanupSemanticLossless=function(a){function b(a,b){if(!a||!b)return 6;var c=a.charAt(a.length-1),d=b.charAt(0),e=c.match(diff_match_patch.nonAlphaNumericRegex_),f=d.match(diff_match_patch.nonAlphaNumericRegex_),g=e&&c.match(diff_match_patch.whitespaceRegex_),h=f&&d.match(diff_match_patch.whitespaceRegex_),c=g&&c.match(diff_match_patch.linebreakRegex_),d=h&&d.match(diff_match_patch.linebreakRegex_),i=c&&a.match(diff_match_patch.blanklineEndRegex_),j=d&&b.match(diff_match_patch.blanklineStartRegex_);
+return i||j?5:c||d?4:e&&!g&&h?3:g||h?2:e||f?1:0}for(var c=1;c<a.length-1;){if(0==a[c-1][0]&&0==a[c+1][0]){var d=a[c-1][1],e=a[c][1],f=a[c+1][1],g=this.diff_commonSuffix(d,e);if(g)var h=e.substring(e.length-g),d=d.substring(0,d.length-g),e=h+e.substring(0,e.length-g),f=h+f;for(var g=d,h=e,j=f,i=b(d,e)+b(e,f);e.charAt(0)===f.charAt(0);){var d=d+e.charAt(0),e=e.substring(1)+f.charAt(0),f=f.substring(1),k=b(d,e)+b(e,f);k>=i&&(i=k,g=d,h=e,j=f)}a[c-1][1]!=g&&(g?a[c-1][1]=g:(a.splice(c-1,1),c--),a[c][1]=
+h,j?a[c+1][1]=j:(a.splice(c+1,1),c--))}c++}};diff_match_patch.nonAlphaNumericRegex_=/[^a-zA-Z0-9]/;diff_match_patch.whitespaceRegex_=/\s/;diff_match_patch.linebreakRegex_=/[\r\n]/;diff_match_patch.blanklineEndRegex_=/\n\r?\n$/;diff_match_patch.blanklineStartRegex_=/^\r?\n\r?\n/;
+diff_match_patch.prototype.diff_cleanupEfficiency=function(a){for(var b=!1,c=[],d=0,e=null,f=0,g=!1,h=!1,j=!1,i=!1;f<a.length;){if(0==a[f][0])a[f][1].length<this.Diff_EditCost&&(j||i)?(c[d++]=f,g=j,h=i,e=a[f][1]):(d=0,e=null),j=i=!1;else if(-1==a[f][0]?i=!0:j=!0,e&&(g&&h&&j&&i||e.length<this.Diff_EditCost/2&&3==g+h+j+i))a.splice(c[d-1],0,[-1,e]),a[c[d-1]+1][0]=1,d--,e=null,g&&h?(j=i=!0,d=0):(d--,f=0<d?c[d-1]:-1,j=i=!1),b=!0;f++}b&&this.diff_cleanupMerge(a)};
+diff_match_patch.prototype.diff_cleanupMerge=function(a){a.push([0,""]);for(var b=0,c=0,d=0,e="",f="",g;b<a.length;)switch(a[b][0]){case 1:d++;f+=a[b][1];b++;break;case -1:c++;e+=a[b][1];b++;break;case 0:1<c+d?(0!==c&&0!==d&&(g=this.diff_commonPrefix(f,e),0!==g&&(0<b-c-d&&0==a[b-c-d-1][0]?a[b-c-d-1][1]+=f.substring(0,g):(a.splice(0,0,[0,f.substring(0,g)]),b++),f=f.substring(g),e=e.substring(g)),g=this.diff_commonSuffix(f,e),0!==g&&(a[b][1]=f.substring(f.length-g)+a[b][1],f=f.substring(0,f.length-
+g),e=e.substring(0,e.length-g))),0===c?a.splice(b-d,c+d,[1,f]):0===d?a.splice(b-c,c+d,[-1,e]):a.splice(b-c-d,c+d,[-1,e],[1,f]),b=b-c-d+(c?1:0)+(d?1:0)+1):0!==b&&0==a[b-1][0]?(a[b-1][1]+=a[b][1],a.splice(b,1)):b++,c=d=0,f=e=""}""===a[a.length-1][1]&&a.pop();c=!1;for(b=1;b<a.length-1;)0==a[b-1][0]&&0==a[b+1][0]&&(a[b][1].substring(a[b][1].length-a[b-1][1].length)==a[b-1][1]?(a[b][1]=a[b-1][1]+a[b][1].substring(0,a[b][1].length-a[b-1][1].length),a[b+1][1]=a[b-1][1]+a[b+1][1],a.splice(b-1,1),c=!0):a[b][1].substring(0,
+a[b+1][1].length)==a[b+1][1]&&(a[b-1][1]+=a[b+1][1],a[b][1]=a[b][1].substring(a[b+1][1].length)+a[b+1][1],a.splice(b+1,1),c=!0)),b++;c&&this.diff_cleanupMerge(a)};diff_match_patch.prototype.diff_xIndex=function(a,b){var c=0,d=0,e=0,f=0,g;for(g=0;g<a.length;g++){1!==a[g][0]&&(c+=a[g][1].length);-1!==a[g][0]&&(d+=a[g][1].length);if(c>b)break;e=c;f=d}return a.length!=g&&-1===a[g][0]?f:f+(b-e)};
+diff_match_patch.prototype.diff_prettyHtml=function(a){for(var b=[],c=/&/g,d=/</g,e=/>/g,f=/\n/g,g=0;g<a.length;g++){var h=a[g][0],j=a[g][1],j=j.replace(c,"&amp;").replace(d,"&lt;").replace(e,"&gt;").replace(f,"&para;<br>");switch(h){case 1:b[g]='<ins style="background:#e6ffe6;">'+j+"</ins>";break;case -1:b[g]='<del style="background:#ffe6e6;">'+j+"</del>";break;case 0:b[g]="<span>"+j+"</span>"}}return b.join("")};
+diff_match_patch.prototype.diff_text1=function(a){for(var b=[],c=0;c<a.length;c++)1!==a[c][0]&&(b[c]=a[c][1]);return b.join("")};diff_match_patch.prototype.diff_text2=function(a){for(var b=[],c=0;c<a.length;c++)-1!==a[c][0]&&(b[c]=a[c][1]);return b.join("")};diff_match_patch.prototype.diff_levenshtein=function(a){for(var b=0,c=0,d=0,e=0;e<a.length;e++){var f=a[e][0],g=a[e][1];switch(f){case 1:c+=g.length;break;case -1:d+=g.length;break;case 0:b+=Math.max(c,d),d=c=0}}return b+=Math.max(c,d)};
+diff_match_patch.prototype.diff_toDelta=function(a){for(var b=[],c=0;c<a.length;c++)switch(a[c][0]){case 1:b[c]="+"+encodeURI(a[c][1]);break;case -1:b[c]="-"+a[c][1].length;break;case 0:b[c]="="+a[c][1].length}return b.join("\t").replace(/%20/g," ")};
+diff_match_patch.prototype.diff_fromDelta=function(a,b){for(var c=[],d=0,e=0,f=b.split(/\t/g),g=0;g<f.length;g++){var h=f[g].substring(1);switch(f[g].charAt(0)){case "+":try{c[d++]=[1,decodeURI(h)]}catch(j){throw Error("Illegal escape in diff_fromDelta: "+h);}break;case "-":case "=":var i=parseInt(h,10);if(isNaN(i)||0>i)throw Error("Invalid number in diff_fromDelta: "+h);h=a.substring(e,e+=i);"="==f[g].charAt(0)?c[d++]=[0,h]:c[d++]=[-1,h];break;default:if(f[g])throw Error("Invalid diff operation in diff_fromDelta: "+
+f[g]);}}if(e!=a.length)throw Error("Delta length ("+e+") does not equal source text length ("+a.length+").");return c};diff_match_patch.prototype.match_main=function(a,b,c){if(null==a||null==b||null==c)throw Error("Null input. (match_main)");c=Math.max(0,Math.min(c,a.length));return a==b?0:a.length?a.substring(c,c+b.length)==b?c:this.match_bitap_(a,b,c):-1};
+diff_match_patch.prototype.match_bitap_=function(a,b,c){function d(a,d){var e=a/b.length,g=Math.abs(c-d);return!f.Match_Distance?g?1:e:e+g/f.Match_Distance}if(b.length>this.Match_MaxBits)throw Error("Pattern too long for this browser.");var e=this.match_alphabet_(b),f=this,g=this.Match_Threshold,h=a.indexOf(b,c);-1!=h&&(g=Math.min(d(0,h),g),h=a.lastIndexOf(b,c+b.length),-1!=h&&(g=Math.min(d(0,h),g)));for(var j=1<<b.length-1,h=-1,i,k,q=b.length+a.length,r,t=0;t<b.length;t++){i=0;for(k=q;i<k;)d(t,c+
+k)<=g?i=k:q=k,k=Math.floor((q-i)/2+i);q=k;i=Math.max(1,c-k+1);var p=Math.min(c+k,a.length)+b.length;k=Array(p+2);for(k[p+1]=(1<<t)-1;p>=i;p--){var w=e[a.charAt(p-1)];k[p]=0===t?(k[p+1]<<1|1)&w:(k[p+1]<<1|1)&w|((r[p+1]|r[p])<<1|1)|r[p+1];if(k[p]&j&&(w=d(t,p-1),w<=g))if(g=w,h=p-1,h>c)i=Math.max(1,2*c-h);else break}if(d(t+1,c)>g)break;r=k}return h};
+diff_match_patch.prototype.match_alphabet_=function(a){for(var b={},c=0;c<a.length;c++)b[a.charAt(c)]=0;for(c=0;c<a.length;c++)b[a.charAt(c)]|=1<<a.length-c-1;return b};
+diff_match_patch.prototype.patch_addContext_=function(a,b){if(0!=b.length){for(var c=b.substring(a.start2,a.start2+a.length1),d=0;b.indexOf(c)!=b.lastIndexOf(c)&&c.length<this.Match_MaxBits-this.Patch_Margin-this.Patch_Margin;)d+=this.Patch_Margin,c=b.substring(a.start2-d,a.start2+a.length1+d);d+=this.Patch_Margin;(c=b.substring(a.start2-d,a.start2))&&a.diffs.unshift([0,c]);(d=b.substring(a.start2+a.length1,a.start2+a.length1+d))&&a.diffs.push([0,d]);a.start1-=c.length;a.start2-=c.length;a.length1+=
+c.length+d.length;a.length2+=c.length+d.length}};
+diff_match_patch.prototype.patch_make=function(a,b,c){var d;if("string"==typeof a&&"string"==typeof b&&"undefined"==typeof c)d=a,b=this.diff_main(d,b,!0),2<b.length&&(this.diff_cleanupSemantic(b),this.diff_cleanupEfficiency(b));else if(a&&"object"==typeof a&&"undefined"==typeof b&&"undefined"==typeof c)b=a,d=this.diff_text1(b);else if("string"==typeof a&&b&&"object"==typeof b&&"undefined"==typeof c)d=a;else if("string"==typeof a&&"string"==typeof b&&c&&"object"==typeof c)d=a,b=c;else throw Error("Unknown call format to patch_make.");
+if(0===b.length)return[];c=[];a=new diff_match_patch.patch_obj;for(var e=0,f=0,g=0,h=d,j=0;j<b.length;j++){var i=b[j][0],k=b[j][1];!e&&0!==i&&(a.start1=f,a.start2=g);switch(i){case 1:a.diffs[e++]=b[j];a.length2+=k.length;d=d.substring(0,g)+k+d.substring(g);break;case -1:a.length1+=k.length;a.diffs[e++]=b[j];d=d.substring(0,g)+d.substring(g+k.length);break;case 0:k.length<=2*this.Patch_Margin&&e&&b.length!=j+1?(a.diffs[e++]=b[j],a.length1+=k.length,a.length2+=k.length):k.length>=2*this.Patch_Margin&&
+e&&(this.patch_addContext_(a,h),c.push(a),a=new diff_match_patch.patch_obj,e=0,h=d,f=g)}1!==i&&(f+=k.length);-1!==i&&(g+=k.length)}e&&(this.patch_addContext_(a,h),c.push(a));return c};diff_match_patch.prototype.patch_deepCopy=function(a){for(var b=[],c=0;c<a.length;c++){var d=a[c],e=new diff_match_patch.patch_obj;e.diffs=[];for(var f=0;f<d.diffs.length;f++)e.diffs[f]=d.diffs[f].slice();e.start1=d.start1;e.start2=d.start2;e.length1=d.length1;e.length2=d.length2;b[c]=e}return b};
+diff_match_patch.prototype.patch_apply=function(a,b){if(0==a.length)return[b,[]];a=this.patch_deepCopy(a);var c=this.patch_addPadding(a);b=c+b+c;this.patch_splitMax(a);for(var d=0,e=[],f=0;f<a.length;f++){var g=a[f].start2+d,h=this.diff_text1(a[f].diffs),j,i=-1;if(h.length>this.Match_MaxBits){if(j=this.match_main(b,h.substring(0,this.Match_MaxBits),g),-1!=j&&(i=this.match_main(b,h.substring(h.length-this.Match_MaxBits),g+h.length-this.Match_MaxBits),-1==i||j>=i))j=-1}else j=this.match_main(b,h,g);
+if(-1==j)e[f]=!1,d-=a[f].length2-a[f].length1;else if(e[f]=!0,d=j-g,g=-1==i?b.substring(j,j+h.length):b.substring(j,i+this.Match_MaxBits),h==g)b=b.substring(0,j)+this.diff_text2(a[f].diffs)+b.substring(j+h.length);else if(g=this.diff_main(h,g,!1),h.length>this.Match_MaxBits&&this.diff_levenshtein(g)/h.length>this.Patch_DeleteThreshold)e[f]=!1;else{this.diff_cleanupSemanticLossless(g);for(var h=0,k,i=0;i<a[f].diffs.length;i++){var q=a[f].diffs[i];0!==q[0]&&(k=this.diff_xIndex(g,h));1===q[0]?b=b.substring(0,
+j+k)+q[1]+b.substring(j+k):-1===q[0]&&(b=b.substring(0,j+k)+b.substring(j+this.diff_xIndex(g,h+q[1].length)));-1!==q[0]&&(h+=q[1].length)}}}b=b.substring(c.length,b.length-c.length);return[b,e]};
+diff_match_patch.prototype.patch_addPadding=function(a){for(var b=this.Patch_Margin,c="",d=1;d<=b;d++)c+=String.fromCharCode(d);for(d=0;d<a.length;d++)a[d].start1+=b,a[d].start2+=b;var d=a[0],e=d.diffs;if(0==e.length||0!=e[0][0])e.unshift([0,c]),d.start1-=b,d.start2-=b,d.length1+=b,d.length2+=b;else if(b>e[0][1].length){var f=b-e[0][1].length;e[0][1]=c.substring(e[0][1].length)+e[0][1];d.start1-=f;d.start2-=f;d.length1+=f;d.length2+=f}d=a[a.length-1];e=d.diffs;0==e.length||0!=e[e.length-1][0]?(e.push([0,
+c]),d.length1+=b,d.length2+=b):b>e[e.length-1][1].length&&(f=b-e[e.length-1][1].length,e[e.length-1][1]+=c.substring(0,f),d.length1+=f,d.length2+=f);return c};
+diff_match_patch.prototype.patch_splitMax=function(a){for(var b=this.Match_MaxBits,c=0;c<a.length;c++)if(!(a[c].length1<=b)){var d=a[c];a.splice(c--,1);for(var e=d.start1,f=d.start2,g="";0!==d.diffs.length;){var h=new diff_match_patch.patch_obj,j=!0;h.start1=e-g.length;h.start2=f-g.length;""!==g&&(h.length1=h.length2=g.length,h.diffs.push([0,g]));for(;0!==d.diffs.length&&h.length1<b-this.Patch_Margin;){var g=d.diffs[0][0],i=d.diffs[0][1];1===g?(h.length2+=i.length,f+=i.length,h.diffs.push(d.diffs.shift()),
+j=!1):-1===g&&1==h.diffs.length&&0==h.diffs[0][0]&&i.length>2*b?(h.length1+=i.length,e+=i.length,j=!1,h.diffs.push([g,i]),d.diffs.shift()):(i=i.substring(0,b-h.length1-this.Patch_Margin),h.length1+=i.length,e+=i.length,0===g?(h.length2+=i.length,f+=i.length):j=!1,h.diffs.push([g,i]),i==d.diffs[0][1]?d.diffs.shift():d.diffs[0][1]=d.diffs[0][1].substring(i.length))}g=this.diff_text2(h.diffs);g=g.substring(g.length-this.Patch_Margin);i=this.diff_text1(d.diffs).substring(0,this.Patch_Margin);""!==i&&
+(h.length1+=i.length,h.length2+=i.length,0!==h.diffs.length&&0===h.diffs[h.diffs.length-1][0]?h.diffs[h.diffs.length-1][1]+=i:h.diffs.push([0,i]));j||a.splice(++c,0,h)}}};diff_match_patch.prototype.patch_toText=function(a){for(var b=[],c=0;c<a.length;c++)b[c]=a[c];return b.join("")};
+diff_match_patch.prototype.patch_fromText=function(a){var b=[];if(!a)return b;a=a.split("\n");for(var c=0,d=/^@@ -(\d+),?(\d*) \+(\d+),?(\d*) @@$/;c<a.length;){var e=a[c].match(d);if(!e)throw Error("Invalid patch string: "+a[c]);var f=new diff_match_patch.patch_obj;b.push(f);f.start1=parseInt(e[1],10);""===e[2]?(f.start1--,f.length1=1):"0"==e[2]?f.length1=0:(f.start1--,f.length1=parseInt(e[2],10));f.start2=parseInt(e[3],10);""===e[4]?(f.start2--,f.length2=1):"0"==e[4]?f.length2=0:(f.start2--,f.length2=
+parseInt(e[4],10));for(c++;c<a.length;){e=a[c].charAt(0);try{var g=decodeURI(a[c].substring(1))}catch(h){throw Error("Illegal escape in patch_fromText: "+g);}if("-"==e)f.diffs.push([-1,g]);else if("+"==e)f.diffs.push([1,g]);else if(" "==e)f.diffs.push([0,g]);else if("@"==e)break;else if(""!==e)throw Error('Invalid patch mode "'+e+'" in: '+g);c++}}return b};diff_match_patch.patch_obj=function(){this.diffs=[];this.start2=this.start1=null;this.length2=this.length1=0};
+diff_match_patch.patch_obj.prototype.toString=function(){var a,b;a=0===this.length1?this.start1+",0":1==this.length1?this.start1+1:this.start1+1+","+this.length1;b=0===this.length2?this.start2+",0":1==this.length2?this.start2+1:this.start2+1+","+this.length2;a=["@@ -"+a+" +"+b+" @@\n"];var c;for(b=0;b<this.diffs.length;b++){switch(this.diffs[b][0]){case 1:c="+";break;case -1:c="-";break;case 0:c=" "}a[b+1]=c+encodeURI(this.diffs[b][1])+"\n"}return a.join("").replace(/%20/g," ")};
+this.diff_match_patch=diff_match_patch;this.DIFF_DELETE=-1;this.DIFF_INSERT=1;this.DIFF_EQUAL=0;})()
diff --git a/v3/js/holistic.js b/v3/js/holistic.js
new file mode 100644
index 000000000..4390b4da9
--- /dev/null
+++ b/v3/js/holistic.js
@@ -0,0 +1,716 @@
+// Created by Irene Chen (2013)
+
+// look at js/pytutor.js for guide on refactoring object methods in JS!
+function HolisticVisualizer(domRootID, dat, params) {
+
+	var myViz = this;
+	myViz.domRoot = $('#' + domRootID);
+	myViz.domRootD3 = d3.select('#' + domRootID);
+
+	myViz.domRoot.html('<div class="HolisticVisualizer"></div>\
+		<div id="altContainer"><h3>Step <span id="step-id">N/A</span></h3>\
+		<div id="altVisual"></div></div>\
+		<div id="holisticTooltip"><b>Step <span id="tooltip-step-id">N/A</span></b>\
+		<div id="holisticTooltipVisual"></div></div>');
+	myViz.domRoot = myViz.domRoot.find('div.HolisticVisualizer');
+	myViz.domRootD3 = myViz.domRootD3.select('div.HolisticVisualizer');
+
+	var pregeneratedHTML = '<div class="control">\
+	            <form action="">\
+	                <label for="viewmode">View Mode:</label>\
+	                <select id="var-select" class="dropdown" name="viewmode">\
+	                    <option value="default">Default</option>\
+	                </select>\
+	                <br>\
+	                <input id="connector-select" type="checkbox" name="connector" value="Connectors" checked>Connecting line\
+	                <br>\
+	                <input id="debug-select" type="checkbox" name="debug" value="debug">Debug panel\
+	                <br>\
+	                <!--<input id="delimiter-select" type="checkbox" name="delimiters" value="delimiters">Function delimiters\
+	                <br>-->\
+	            </form>\
+	        </div>\
+	        <div id="wrapper">\
+	        <div id="left"><table id="code"></table></div>\
+		    <div id="right"><div id="padder"><div id="slider"></div></div></div>\
+		    </div>\
+	        <div id="debugPanel">\
+	            <h3>Debug: step <span id="debug-title">N/A</span></h3>\
+	            <div id="debug">\
+	            </div>\
+	        </div>';
+
+	myViz.domRoot.html(pregeneratedHTML);
+
+	params.hideCode = true;
+	myViz.altVisualizer = new ExecutionVisualizer('altVisual', dat, params);
+	myViz.tooltipVisualizer = new ExecutionVisualizer('holisticTooltipVisual', dat, params);
+
+	/*
+	 * =================================
+	 *              DATASET
+	 * =================================
+	 */
+
+	var trace = dat;
+	// build dataset from trace
+	var dataset = [];
+	for (var i = 0; i < trace.trace.length; i++) {
+		// we want indexing to start at 0 - offset of -1
+		dataset.push(trace.trace[i].line - 1);
+	}
+
+	/*
+	 * =================================
+	 *            CONSTANTS
+	 * =================================
+	 */
+	var NO_VALUE = '~';
+
+	var max_value = Math.max.apply(Math, dataset);
+	var num_rows = max_value + 1;
+
+	// width and height
+	var padding = 17;
+	var col_w = 26;
+	var col_mid = col_w / 2;
+	var row_h = 24;
+	var row_mid = 12;
+	var w = dataset.length * col_w;
+	var h = num_rows * row_h;
+	var final_h = h + row_h;
+
+	// track alt visual data
+	var altVisualStep = 0;
+
+	/*
+	 * =================================
+	 *            CODE TABLE
+	 * =================================
+	 */
+	var code = trace.code.split('\n');
+	var table = myViz.domRoot.find('#code');
+
+	for (var i = 0; i < code.length; i++) {
+	    table.append('<tr>' + 
+	    	'<td><pre id="code-' + i + '"><code>' + code[i] + '</code></pre></td>' + 
+	    	'<td style="text-align:right;"><pre><code>' + (i+1) + ' </code></pre></td>' + 
+	    	'</tr>');
+	}
+
+	// adjust width and height of table
+	myViz.domRoot.find('table').attr('height',h);
+	myViz.domRoot.find('td').attr('height',row_h);
+	myViz.domRoot.find('tr').attr('height',row_h);
+
+	/*
+	 * =================================
+	 *          VAR-SELECT MENU
+	 * =================================
+	 */
+	// globals
+	var global_group = document.createElement('optgroup');
+	global_group.setAttribute('label', 'Globals');
+	var globals = {};
+	for (var i = 0; i < trace.trace.length; i++) {
+		for (var j = 0; j < trace.trace[i].ordered_globals.length; j++) {
+			var x = trace.trace[i].ordered_globals[j];
+			if (!(x in globals)) {
+				var option = document.createElement('option');
+				option.text = option.value = x;
+				global_group.appendChild(option, null);
+				globals[x] = 1;
+			}
+		}
+	}
+	myViz.domRoot.find('#var-select').append(global_group);
+
+	// functions
+	var functions = {};
+	for (var i = 0; i < trace.trace.length; i++) {
+		if (trace.trace[i].func_name != "<module>") {
+			var func = trace.trace[i].func_name;
+			if (!(func in functions)) {
+				var function_group = document.createElement('optgroup');
+				function_group.setAttribute('label', trace.trace[i].func_name);
+				functions[trace.trace[i].func_name] = 1;
+				var function_vars = {};
+
+				var n = trace.trace[i].stack_to_render.length;
+				if (n > 0) { // pgbovine - added guard
+
+				for (var j = 0; j < trace.trace[i].stack_to_render[n-1].ordered_varnames.length; j++) {
+					var x = trace.trace[i].stack_to_render[n-1].ordered_varnames[j];
+					if (!(x in function_vars) &&
+						x != '__return__') {
+						var option = document.createElement('option');
+						option.text = option.value = x;
+						function_group.appendChild(option, null);
+						function_vars[x] = 1;
+					}
+				}
+
+				}
+				myViz.domRoot.find('#var-select').append(function_group);
+			}
+		}
+	}
+
+	/*
+	 * =================================
+	 *         SVG CONSTRUCTION
+	 * =================================
+	 */
+	// construct code trace svg
+	var d3image = myViz.domRootD3.select("#slider");
+	var svg = d3image.append("svg:svg")
+	            	 .attr("width", w)
+	            	 .attr("height", final_h);
+
+	// scales
+	var xScale = d3.scale.linear()
+	                     .domain([0, dataset.length-1])
+	                     .range([col_mid, w - col_mid]);
+	// xScale(i) = (i * col_w) + col_mid
+	var yScale = d3.scale.linear()
+	                     .domain([0, max_value])
+	                     .range([row_mid, h - row_mid]);
+	// yScale(d) = (d * row_h) + row_mid
+
+	/*
+	 * =================================
+	 *         BACKGROUND GROUP
+	 * =================================
+	 */
+	// var backgroundGroup = svg.append("svg:g");
+	// var rows = backgroundGroup.selectAll("rect")
+	// 			  .data(d3.range(num_rows + 1))
+	// 			  .enter()
+	// 			  .append("svg:rect");
+
+	// rows.attr("x", 0)
+	// 	.attr("y", function(d, i) {
+	//             return (d * row_h);
+	//         })
+	// 	.attr("width", w)
+	// 	.attr("height", row_h)
+	// 	.attr("fill", function(d, i) {
+	//              if (d % 2 == 0) {
+	//           		return "#D5F1F1";
+	//              } else {
+	//              	return "white";
+	//              }
+	//         });
+
+	/*
+	 * =================================
+	 *            TEXT GROUP
+	 * =================================
+	 */
+	var textGroup = svg.append("svg:g");
+	var values = textGroup.selectAll("text")
+	                .data(dataset)
+	                .enter()
+	                .append("text");
+
+	values.text(
+	        function(d, i) {
+	        	var val = myViz.domRoot.find('#var-select').val();
+	        	if (val == 'default') {
+	        		return NO_VALUE;
+	        	}
+
+	        	if (myViz.domRoot.find('#var-select').parent().attr('label') == 'globals') {
+		        	if (val in trace.trace[i].globals) {
+		        		return trace.trace[i].globals[val];
+		        	} else {
+		        		return NO_VALUE;
+		        	}
+		        } else {
+		        	var n = trace.trace[i].stack_to_render.length;
+		        	if (n > 0 &&
+		        		val in trace.trace[i].stack_to_render[n-1].encoded_locals &&
+		        		myViz.domRoot.find('#var-select').parent().attr('label') == trace.trace[i].stack_to_render[n-1].func_name) {
+		        		return trace.trace[i].stack_to_render[n-1].encoded_locals[val];
+		        	} else {
+		        		return NO_VALUE;
+		        	}
+		        }
+	        })
+	        .attr("x", function(d, i) {
+	            return xScale(i) - 4;
+	        })
+	        .attr("y", function(d, i) {
+	            return yScale(d) + 4;
+	        })
+	        .style("visibility", "hidden");
+
+	/*
+	 * =================================
+	 *          CONNECTOR GROUP
+	 * =================================
+	 */
+	var connectorGroup = svg.append("svg:g");
+
+	// create a line function that can convert data[] into x and y points
+	var line = d3.svg.line()
+		.x(function(d,i) {
+			return xScale(d[0]);
+		})
+		.y(function(d) {
+			return yScale(d[1]);
+		})
+		.interpolate('linear');
+
+	// TODO: this doesn't interpolate the way i want - let's do it manually instead
+	var curvedLine = d3.svg.line()
+		.x(function(d,i) {
+			return xScale(d[0]);
+		})
+		.y(function(d) {
+			return yScale(d[1]);
+		})
+		.interpolate('basis');
+
+	// tweak path data to include curves
+	var straightData = [];
+	var callData = [];
+	var callTextData = [];
+	var returnData = [];
+
+	var specialSegmentsData = [];
+	for (var i = 0; i < dataset.length; i++) {
+		if (trace.trace[i].event == 'call') {
+			if ((i-1) > 0) {
+				specialSegmentsData.push([i-1, i, dataset[i], 'call']);
+			}
+		} else if (trace.trace[i].event == 'return') {
+			if ((i+1) < dataset.length) {
+				specialSegmentsData.push([i, i+1, dataset[i], 'return']);
+			}
+		}
+	}
+	specialSegmentsData.push([dataset.length, dataset.length, dataset[-1], 'end']);
+
+	for (var i = 0; i < specialSegmentsData.length; i++) {
+		if (i > 0) {
+			var start = specialSegmentsData[i-1][1];
+		} else {
+			var start = 0;
+		}
+
+		// need to include original indices
+		var slice = dataset.slice(start,specialSegmentsData[i][1]);
+		var sliceData = [];
+
+		for (var j = 0; j < slice.length; j++) {
+			sliceData.push([start + j, slice[j]]);
+		}
+
+		// push to pathData
+		straightData.push(line(sliceData));
+
+		if (specialSegmentsData[i][3] == 'call') {
+			var headIndex = specialSegmentsData[i][0];
+			var tailIndex = specialSegmentsData[i][1];
+			var mid = headIndex;
+			var magic = (0.3*dataset[headIndex] + 0.7*dataset[tailIndex]);
+			var arrowData = [[headIndex, dataset[headIndex]], [mid, magic], [tailIndex, dataset[tailIndex]]];
+			var arrowPathData = "M"+xScale(headIndex)+","+yScale(dataset[headIndex])+
+				" Q"+xScale(mid)+","+yScale(magic)+" "+xScale(tailIndex)+","+yScale(dataset[tailIndex]);
+			callData.push(arrowPathData);
+			callTextData.push([headIndex, dataset[headIndex], tailIndex, dataset[tailIndex]]);
+		} else if (specialSegmentsData[i][3] == 'return') {
+			var headIndex = specialSegmentsData[i][0];
+			var tailIndex = specialSegmentsData[i][1];
+			var mid = tailIndex;
+			var magic = (0.3*dataset[headIndex] + 0.7*dataset[tailIndex]);
+			var arrowData = [[headIndex, dataset[headIndex]], [mid, magic], [tailIndex, dataset[tailIndex]]];
+			var arrowPathData = "M"+xScale(headIndex)+","+yScale(dataset[headIndex])+
+				" Q"+xScale(mid)+","+yScale(magic)+" "+xScale(tailIndex)+","+yScale(dataset[tailIndex]);
+			returnData.push(arrowPathData);
+		}
+	}
+
+	// arrow head definition
+
+	svg.append("defs").append("marker")
+	    .attr("id", "call-arrowhead")
+	    .attr("refX", 6 + 3) /*must be smarter way to calculate shift*/
+	    .attr("refY", 4)
+	    .attr("markerWidth", 10)
+	    .attr("markerHeight", 10)
+	    .attr("orient", "auto")
+	    .append("path")
+	    .attr("d", "M 0,0 V 8 L6,4 Z")
+	    .style("stroke", "red")
+	    .style("fill", "red"); //this is actual shape for arrowhead
+
+	svg.append("defs").append("marker")
+	    .attr("id", "return-arrowhead")
+	    .attr("refX", 6 + 3) /*must be smarter way to calculate shift*/
+	    .attr("refY", 4)
+	    .attr("markerWidth", 10)
+	    .attr("markerHeight", 10)
+	    .attr("orient", "auto")
+	    .append("path")
+	    .attr("d", "M 0,0 V 8 L6,4 Z")
+	    .style("stroke", "lime")
+	    .style("fill", "lime"); //this is actual shape for arrowhead
+
+	var straightConnector = connectorGroup.selectAll(".straight")
+						.data(straightData)
+						.enter()
+						.append("svg:path")
+						.attr("d", function (d) { return d; })
+						.style("visibility", "visible");
+	var callConnector = connectorGroup.selectAll(".call")
+						.data(callData)
+						.enter()
+						.append("svg:path")
+						.attr("d", function (d) { return d; })
+						.style("stroke", "red")
+						.style("visibility", "visible")
+						.attr("marker-end", "url(#call-arrowhead)");
+	var returnConnector = connectorGroup.selectAll(".return")
+						.data(returnData)
+						.enter()
+						.append("svg:path")
+						.attr("d", function (d) { return d; })
+						.style("stroke", "lime")
+						.style("visibility", "visible")
+						.attr("marker-end", "url(#return-arrowhead)");
+
+	var functionText = connectorGroup.selectAll("text")
+                .data(callTextData)
+                .enter()
+                .append("text");
+
+	functionText.text(function(d, i) {
+				return trace.trace[d[2]].func_name;
+			})
+	        .attr("x", function(d, i) {
+	            return xScale(d[0]) + 10;
+	        })
+	        .attr("y", function(d, i) {
+	        	var mid = 0.5 * (d[1]+d[3]);
+	            return yScale(mid) + 4;
+	        })
+	        .style("visibility", "visible")
+	        .style("font-family", "monospace")
+	        .style("font-size", "10pt");
+
+	/*
+	 * =================================
+	 *          DEFAULT GROUP
+	 * =================================
+	 */
+	var defaultGroup = svg.append("svg:g");
+	var circles = defaultGroup.selectAll("circle")
+	                 .data(dataset)
+	                 .enter()
+	                 .append("circle");
+
+	circles.attr("cx", function(d, i) {
+	            return xScale(i);
+	        })
+	        .attr("cy", function(d, i) {
+	            return yScale(d);
+	        })
+	        .attr("r", "4")
+	        .attr("fill", function(d, i) {
+	        	return 'black';
+	        })
+	        .style("visibility", "visible");
+
+	/*
+	 * =================================
+	 *          DELIMITER GROUP
+	 * =================================
+	 */
+	// build function call dataset (need to grab returns as well!)
+	var functionCallDataset = [];
+	for (var i = 0; i < dataset.length; i++) {
+		if (trace.trace[i].event == 'call') {
+			functionCallDataset.push([i, dataset[i], 'call']);
+		} else if (trace.trace[i].event == 'return') {
+			functionCallDataset.push([i, dataset[i], 'return']);
+		}
+	}
+
+	var delimitingGroup = svg.append("svg:g");
+	var delimiters = delimitingGroup.selectAll("line")
+						.data(functionCallDataset)
+						.enter()
+						.append("line");
+
+	delimiters.attr("x1", function(d, i) {
+				if (d[2] == 'call') {
+	            	return xScale(d[0]) - col_mid;
+	            } else {
+	            	return xScale(d[0]) + col_mid;
+	            }
+	        })
+	        .attr("y1", function(d, i) {
+	            return 0;
+	        })
+	        .attr("x2", function(d, i) {
+				if (d[2] == 'call') {
+	            	return xScale(d[0]) - col_mid;
+	            } else {
+	            	return xScale(d[0]) + col_mid;
+	            }
+	        })
+	        .attr("y2", function(d, i) {
+	            return h;
+	        })
+	        .style("visibility", "hidden")
+	        .classed("delimiter", true);
+
+	/*
+	 * =================================
+	 *           GUIDE GROUP
+	 * =================================
+	 */
+	var guideGroup = svg.append("svg:g");
+	var v_guides = guideGroup.selectAll("line")
+	                  .data(dataset)
+	                  .enter()
+	                  .append("line");
+
+	v_guides.attr("x1", function(d, i) {
+	            return xScale(i);
+	        })
+	        .attr("y1", function(d, i) {
+	            return 0;
+	        })
+	        .attr("x2", function(d, i) {
+	            return xScale(i);
+	        })
+	        .attr("y2", function(d, i) {
+	            return h;
+	        })
+	        .style("visibility", "hidden")
+	        .classed("v-guide", true);
+
+	var v_hovers = guideGroup.selectAll("rect")
+	                  .data(dataset)
+	                  .enter()
+	                  .append("rect");
+
+	// save "top" position for debug panel
+	var topPosition = myViz.domRoot.find('#debug').scrollTop();
+
+	v_hovers.attr("x", function(d, i) {
+	            return (i * col_w);
+	        })
+	        .attr("y", function(d, i) {
+	            return 0;
+	        })
+	        .attr("width", function(d, i) {
+	            return col_w;
+	        })
+	        .attr("height", function(d, i) {
+	            return h;
+	        })
+	        .classed("v-hover", true)
+	        .on("mouseover",
+	            function (d, i) {
+					var row = table[0].rows[d];
+					var cell = row.cells[0];
+					myViz.domRoot.find('#code tr:eq(' + d + ') td:first').addClass("v-hover");
+					myViz.domRoot.find('#code tr:eq(' + d + ') td:last').addClass("v-hover");
+	                v_guides.filter(
+	                    function(data, index) {
+	                        return index == i;
+	                    })
+	                .style("visibility", "visible");
+	                circles.filter(
+	                    function(data, index) {
+	                        return index == i;
+	                    });
+
+	                var svgOffset = myViz.domRoot.find('div#slider svg').offset();
+
+	                // hide old tooltip
+	                hideTooltip();
+
+					if (d3.mouse(this)[1] > (yScale(d)-row_mid) && d3.mouse(this)[1] < (yScale(d+1)-row_mid) ) {
+						$('#tooltip-step-id').text(i);
+		                $('#holisticTooltip').show();
+		                myViz.tooltipVisualizer.renderStep(i);
+					    changeTooltipPosition(xScale(i) + svgOffset.left, yScale(d) + svgOffset.top);
+					}
+	            })
+	        .on("mousemove",
+	            function (d, i) {
+					var row = table[0].rows[d];
+					var cell = row.cells[0];
+					myViz.domRoot.find('#code tr:eq(' + d + ') td:first').addClass("v-hover");
+					myViz.domRoot.find('#code tr:eq(' + d + ') td:last').addClass("v-hover");
+	                v_guides.filter(
+	                    function(data, index) {
+	                        return index == i;
+	                    })
+	                .style("visibility", "visible");
+
+	                var svgOffset = myViz.domRoot.find('div#slider svg').offset();
+
+	                // hide old tooltip
+	                hideTooltip();
+
+					if (d3.mouse(this)[1] > (yScale(d)-row_mid) && d3.mouse(this)[1] < (yScale(d+1)-row_mid) ) {
+						$('#tooltip-step-id').text(i);
+		                $('#holisticTooltip').show();
+		                myViz.tooltipVisualizer.renderStep(i);
+					    changeTooltipPosition(xScale(i) + svgOffset.left, yScale(d) + svgOffset.top);
+					}
+	            })
+	        .on("mouseout",
+	            function (d, i) {
+					var row = table[0].rows[d];
+					var cell = row.cells[0];
+					myViz.domRoot.find('#code tr:eq(' + d + ') td:first').removeClass("v-hover");
+					myViz.domRoot.find('#code tr:eq(' + d + ') td:last').removeClass("v-hover");
+	                v_guides.filter(
+	                    function(data, index) {
+	                        return index == i;
+	                    })
+	                .style("visibility", "hidden");
+	                circles.filter(
+	                    function(data, index) {
+	                        return index == i;
+	                    });
+
+	                hideTooltip();
+	            })
+	        .on("click", 
+	        	function (d, i) {
+	        		// debug panel
+					myViz.domRoot.find('#debug-title').text(i);
+					myViz.domRoot.find('#debug').html("<pre>"+JSON.stringify(trace.trace[i], undefined, 2)+"</pre>");
+					myViz.domRoot.find('#debug').scrollTop(topPosition);
+
+					if (d3.mouse(this)[1] > (yScale(d)-row_mid) && d3.mouse(this)[1] < (yScale(d+1)-row_mid) ) {
+						// ExecutionVisualizer panel
+						// use $('#altVisual').is(":visible") to check if visible
+						if ($('#altContainer').is(":visible")) {
+							if (altVisualStep == i) {
+								$('#altContainer').hide();
+							} else {
+								$('#step-id').text(i);
+								altVisualStep = i;
+								myViz.altVisualizer.renderStep(altVisualStep);
+							}
+						} else {
+							$('#step-id').text(i);
+							altVisualStep = i;
+							// have to draw arrows after the div is shown!
+							$('#altContainer').show();
+							myViz.altVisualizer.renderStep(altVisualStep);
+						}
+					}
+				});
+
+	// tooltip helper function
+	var changeTooltipPosition = function(x, y) {
+		var tooltipX = x - 8;
+		var tooltipY = y + 8;
+		var tooltipWidth = $('#holisticTooltip').width();
+		// TODO: adjust for tooltip height
+		if ((tooltipX + tooltipWidth) > $(window).width()) {
+			$('#holisticTooltip').css({top: tooltipY, left: tooltipX - tooltipWidth});
+		} else {
+			$('#holisticTooltip').css({top: tooltipY, left: tooltipX});
+		}
+	};
+
+	var hideTooltip = function() {
+		$('#holisticTooltip').hide();
+	};
+
+	/*
+	 * =================================
+	 *           AXIS GROUP
+	 * =================================
+	 */
+	var axisGroup = svg.append("svg:g");
+	var xAxis = d3.svg.axis()
+	                  .scale(xScale)
+	                  .orient("bottom")
+	                  .ticks(dataset.length);
+	axisGroup.attr("class", "axis")
+	    .attr("transform", "translate(0," + (final_h - padding) + ")")
+	    .call(xAxis);
+
+	/*
+	 * =================================
+	 *          EVENT HANDLERS
+	 * =================================
+	 */
+	myViz.domRoot.find("#var-select").change(function(e) {
+	    if (myViz.domRoot.find("#var-select").val() !== 'default') {
+	        circles.style("visibility", "hidden");
+	        v_hovers.style("visibility", "hidden");
+	        values.style("visibility", "visible");
+	        values.text(function(d, i) {
+	        	var val = myViz.domRoot.find('#var-select').val();
+	        	if (val == 'default') {
+	        		return "~";
+	        	}
+	        	if (myViz.domRoot.find(':selected').parent().attr('label') == 'Globals') {
+		        	if (val in trace.trace[i].globals) {
+		        		return trace.trace[i].globals[val];
+		        	} else {
+		        		return "~";
+		        	}
+		        } else {
+		        	var n = trace.trace[i].stack_to_render.length;
+		        	if (n > 0 &&
+		        		val in trace.trace[i].stack_to_render[n-1].encoded_locals &&
+		        		myViz.domRoot.find(':selected').parent().attr('label') == trace.trace[i].stack_to_render[n-1].func_name) {
+		        		return trace.trace[i].stack_to_render[n-1].encoded_locals[val];
+		        	} else {
+		        		return "~";
+		        	}
+		        }
+	        });
+	    } else {
+	        circles.style("visibility", "visible");
+	        v_hovers.style("visibility", "visible");
+	        values.style("visibility", "hidden");
+	    }
+	});
+
+	myViz.domRoot.find('#connector-select').click(function() {
+	    if($(this).is(':checked')){
+	        connector.style("visibility", "visible");
+	    } else {
+	        connector.style("visibility", "hidden");
+	    }
+	});
+
+	myViz.domRoot.find('#debugPanel').hide();
+	myViz.domRoot.find('#debug-select').click(function() {
+	    if($(this).is(':checked')){
+	        myViz.domRoot.find('#debugPanel').show();
+	    } else {
+	        myViz.domRoot.find('#debugPanel').hide();
+	    }
+	});
+
+	myViz.domRoot.find('#delimiter-select').click(function() {
+	    if($(this).is(':checked')){
+	        delimiters.style("visibility", "visible");
+	    } else {
+	        delimiters.style("visibility", "hidden");
+	    }
+	});
+}
+
+// stubs for unimplemented interface methods
+HolisticVisualizer.prototype.updateOutput = function() {};
+HolisticVisualizer.prototype.redrawConnectors = function() {
+	this.altVisualizer.redrawConnectors();
+};
+HolisticVisualizer.prototype.destroyAllAnnotationBubbles = function() {};
diff --git a/v3/js/iframe-embed.js b/v3/js/iframe-embed.js
new file mode 100644
index 000000000..3ed27f54e
--- /dev/null
+++ b/v3/js/iframe-embed.js
@@ -0,0 +1,188 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// Pre-reqs:
+// - pytutor.js
+// - jquery.ba-bbq.min.js
+// - jquery.ba-dotimeout.min.js // for event debouncing: http://benalman.com/code/projects/jquery-dotimeout/examples/debouncing/
+// - opt-frontend-common.js
+// should all be imported BEFORE this file
+
+var originFrontendJsFile = 'iframe-embed.js';
+
+function NOP() {};
+
+
+$(document).ready(function() {
+  var queryStrOptions = getQueryStringOptions();
+
+  var preseededCode = queryStrOptions.preseededCode;
+  var pyState = queryStrOptions.py;
+  var verticalStackBool = (queryStrOptions.verticalStack == 'true');
+  var heapPrimitivesBool = (queryStrOptions.heapPrimitives == 'true');
+  var textRefsBool = (queryStrOptions.textReferences == 'true');
+  var cumModeBool = (queryStrOptions.cumulative == 'true');
+
+  // these two are deprecated
+  var drawParentPointerBool = (queryStrOptions.drawParentPointers == 'true');
+  var showOnlyOutputsBool = (queryStrOptions.showOnlyOutputs == 'true');
+
+  var codeDivWidth = undefined;
+  var cdw = $.bbq.getState('codeDivWidth');
+  if (cdw) {
+    codeDivWidth = Number(cdw);
+  }
+
+  var codeDivHeight = undefined;
+  var cdh = $.bbq.getState('codeDivHeight');
+  if (cdh) {
+    codeDivHeight = Number(cdh);
+  }
+
+
+  var startingInstruction = queryStrOptions.preseededCurInstr;
+  if (!startingInstruction) {
+    startingInstruction = 0;
+  }
+
+  var backend_script = null;
+  if (pyState == '2') {
+      backend_script = python2_backend_script;
+  }
+  else if (pyState == '3') {
+      backend_script = python3_backend_script;
+  }
+  else if (pyState == '2crazy') {
+      backend_script = python2crazy_backend_script;
+  }
+  else if (pyState == 'js') {
+      backend_script = js_backend_script;
+  }
+  else if (pyState == 'ts') {
+      backend_script = ts_backend_script;
+  }
+  else if (pyState == 'ruby') {
+      backend_script = ruby_backend_script;
+  }
+  else if (pyState == 'java') {
+      backend_script = java_backend_script;
+  }
+  assert(backend_script);
+
+  // David Pritchard's code for resizeContainer option ...
+  var resizeContainer = ($.bbq.getState('resizeContainer') == 'true');
+    
+  if (resizeContainer) {
+      function findContainer() {
+          var ifs = window.top.document.getElementsByTagName("iframe");
+          for(var i = 0, len = ifs.length; i < len; i++)  {
+              var f = ifs[i];
+              var fDoc = f.contentDocument || f.contentWindow.document;
+              if(fDoc === document)   {
+                  return f;
+              }
+          }
+      }
+      
+      var container = findContainer();
+      
+      function resizeContainerNow() {
+          $(container).height($("html").height());
+      };
+  }
+
+
+  // set up all options in a JS object
+  var backendOptionsObj = {cumulative_mode: cumModeBool,
+                           heap_primitives: heapPrimitivesBool,
+                           show_only_outputs: showOnlyOutputsBool,
+                           py_crazy_mode: (pyState == '2crazy'),
+                           origin: originFrontendJsFile};
+
+  var frontendOptionsObj = {startingInstruction: startingInstruction,
+                            embeddedMode: true,
+                            verticalStack: verticalStackBool,
+                            disableHeapNesting: heapPrimitivesBool,
+                            drawParentPointers: drawParentPointerBool,
+                            textualMemoryLabels: textRefsBool,
+                            showOnlyOutputs: showOnlyOutputsBool,
+                            executeCodeWithRawInputFunc: executeCodeWithRawInput,
+                            heightChangeCallback: (resizeContainer ? resizeContainerNow : NOP),
+
+                            // undocumented experimental modes:
+                            pyCrazyMode: (pyState == '2crazy'),
+                            highlightLines: typeof $.bbq.getState("highlightLines") !== "undefined",
+                            codeDivWidth: codeDivWidth,
+                            codeDivHeight: codeDivHeight,
+                           }
+
+  function executeCode(forceStartingInstr) {
+    if (forceStartingInstr) {
+      frontendOptionsObj.startingInstruction = forceStartingInstr;
+    }
+    executeCodeAndCreateViz(preseededCode,
+                            backend_script, backendOptionsObj,
+                            frontendOptionsObj,
+                            'vizDiv',
+                            function() { // success
+                              if (resizeContainer)
+                                  resizeContainerNow();
+                              myVisualizer.redrawConnectors();
+                            },
+                            NOP);
+  }
+
+
+  function executeCodeFromScratch() {
+    // reset these globals
+    rawInputLst = [];
+    executeCode();
+  }
+
+  function executeCodeWithRawInput(rawInputStr, curInstr) {
+    // set some globals
+    rawInputLst.push(rawInputStr);
+    executeCode(curInstr);
+  }
+
+
+  // log a generic AJAX error handler
+  $(document).ajaxError(function() {
+    alert("Ugh, Online Python Tutor server error :( Email philip@pgbovine.net");
+  });
+
+
+  // redraw connector arrows on window resize
+  $(window).resize(function() {
+    myVisualizer.redrawConnectors();
+  });
+
+
+  executeCodeFromScratch(); // finally, execute code and display visualization
+});
diff --git a/v3/js/index.js b/v3/js/index.js
new file mode 100644
index 000000000..c34bc75f0
--- /dev/null
+++ b/v3/js/index.js
@@ -0,0 +1,17 @@
+var demoTrace = {"code": "def listSum(numbers):\n  if not numbers:\n    return 0\n  else:\n    (f, rest) = numbers\n    return f + listSum(rest)\n\nmyList = (1, (2, (3, None)))\ntotal = listSum(myList)\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": ["listSum"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null]}, "line": 8, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 9, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4]}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 5, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 1, "event": "call"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 2, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 3, "event": "step_line"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 4, "encoded_locals": {"__return__": 0, "numbers": null}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f4", "ordered_varnames": ["numbers", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 3, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 3, "encoded_locals": {"__return__": 3, "numbers": ["REF", 4], "rest": null, "f": 3}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f3", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": false, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest"]}, {"frame_id": 2, "encoded_locals": {"__return__": 5, "numbers": ["REF", 3], "rest": ["REF", 4], "f": 2}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f2", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList"], "stdout": "", "func_name": "listSum", "stack_to_render": [{"frame_id": 1, "encoded_locals": {"__return__": 6, "numbers": ["REF", 2], "rest": ["REF", 3], "f": 1}, "is_highlighted": true, "is_parent": false, "func_name": "listSum", "is_zombie": false, "parent_frame_id_list": [], "unique_hash": "listSum_f1", "ordered_varnames": ["numbers", "f", "rest", "__return__"]}], "globals": {"myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 6, "event": "return"}, {"ordered_globals": ["listSum", "myList", "total"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"total": 6, "myList": ["REF", 2], "listSum": ["REF", 1]}, "heap": {"1": ["FUNCTION", "listSum(numbers)", null], "2": ["TUPLE", 1, ["REF", 3]], "3": ["TUPLE", 2, ["REF", 4]], "4": ["TUPLE", 3, null]}, "line": 9, "event": "return"}]};
+
+
+$(document).ready(function() {
+  // for rounded corners
+  $(".activityPane").corner('15px');
+
+  var demoViz = new ExecutionVisualizer('demoViz', demoTrace, {embeddedMode: true,
+                                                               lang: 'py2',
+                                                               editCodeBaseURL: 'visualize.html'});
+
+  // redraw connector arrows on window resize
+  $(window).resize(function() {
+    demoViz.redrawConnectors();
+  });
+});
+ 
diff --git a/v3/js/jquery-1.8.2.min.js b/v3/js/jquery-1.8.2.min.js
new file mode 100644
index 000000000..f65cf1dc4
--- /dev/null
+++ b/v3/js/jquery-1.8.2.min.js
@@ -0,0 +1,2 @@
+/*! jQuery v1.8.2 jquery.com | jquery.org/license */
+(function(a,b){function G(a){var b=F[a]={};return p.each(a.split(s),function(a,c){b[c]=!0}),b}function J(a,c,d){if(d===b&&a.nodeType===1){var e="data-"+c.replace(I,"-$1").toLowerCase();d=a.getAttribute(e);if(typeof d=="string"){try{d=d==="true"?!0:d==="false"?!1:d==="null"?null:+d+""===d?+d:H.test(d)?p.parseJSON(d):d}catch(f){}p.data(a,c,d)}else d=b}return d}function K(a){var b;for(b in a){if(b==="data"&&p.isEmptyObject(a[b]))continue;if(b!=="toJSON")return!1}return!0}function ba(){return!1}function bb(){return!0}function bh(a){return!a||!a.parentNode||a.parentNode.nodeType===11}function bi(a,b){do a=a[b];while(a&&a.nodeType!==1);return a}function bj(a,b,c){b=b||0;if(p.isFunction(b))return p.grep(a,function(a,d){var e=!!b.call(a,d,a);return e===c});if(b.nodeType)return p.grep(a,function(a,d){return a===b===c});if(typeof b=="string"){var d=p.grep(a,function(a){return a.nodeType===1});if(be.test(b))return p.filter(b,d,!c);b=p.filter(b,d)}return p.grep(a,function(a,d){return p.inArray(a,b)>=0===c})}function bk(a){var b=bl.split("|"),c=a.createDocumentFragment();if(c.createElement)while(b.length)c.createElement(b.pop());return c}function bC(a,b){return a.getElementsByTagName(b)[0]||a.appendChild(a.ownerDocument.createElement(b))}function bD(a,b){if(b.nodeType!==1||!p.hasData(a))return;var c,d,e,f=p._data(a),g=p._data(b,f),h=f.events;if(h){delete g.handle,g.events={};for(c in h)for(d=0,e=h[c].length;d<e;d++)p.event.add(b,c,h[c][d])}g.data&&(g.data=p.extend({},g.data))}function bE(a,b){var c;if(b.nodeType!==1)return;b.clearAttributes&&b.clearAttributes(),b.mergeAttributes&&b.mergeAttributes(a),c=b.nodeName.toLowerCase(),c==="object"?(b.parentNode&&(b.outerHTML=a.outerHTML),p.support.html5Clone&&a.innerHTML&&!p.trim(b.innerHTML)&&(b.innerHTML=a.innerHTML)):c==="input"&&bv.test(a.type)?(b.defaultChecked=b.checked=a.checked,b.value!==a.value&&(b.value=a.value)):c==="option"?b.selected=a.defaultSelected:c==="input"||c==="textarea"?b.defaultValue=a.defaultValue:c==="script"&&b.text!==a.text&&(b.text=a.text),b.removeAttribute(p.expando)}function bF(a){return typeof a.getElementsByTagName!="undefined"?a.getElementsByTagName("*"):typeof a.querySelectorAll!="undefined"?a.querySelectorAll("*"):[]}function bG(a){bv.test(a.type)&&(a.defaultChecked=a.checked)}function bY(a,b){if(b in a)return b;var c=b.charAt(0).toUpperCase()+b.slice(1),d=b,e=bW.length;while(e--){b=bW[e]+c;if(b in a)return b}return d}function bZ(a,b){return a=b||a,p.css(a,"display")==="none"||!p.contains(a.ownerDocument,a)}function b$(a,b){var c,d,e=[],f=0,g=a.length;for(;f<g;f++){c=a[f];if(!c.style)continue;e[f]=p._data(c,"olddisplay"),b?(!e[f]&&c.style.display==="none"&&(c.style.display=""),c.style.display===""&&bZ(c)&&(e[f]=p._data(c,"olddisplay",cc(c.nodeName)))):(d=bH(c,"display"),!e[f]&&d!=="none"&&p._data(c,"olddisplay",d))}for(f=0;f<g;f++){c=a[f];if(!c.style)continue;if(!b||c.style.display==="none"||c.style.display==="")c.style.display=b?e[f]||"":"none"}return a}function b_(a,b,c){var d=bP.exec(b);return d?Math.max(0,d[1]-(c||0))+(d[2]||"px"):b}function ca(a,b,c,d){var e=c===(d?"border":"content")?4:b==="width"?1:0,f=0;for(;e<4;e+=2)c==="margin"&&(f+=p.css(a,c+bV[e],!0)),d?(c==="content"&&(f-=parseFloat(bH(a,"padding"+bV[e]))||0),c!=="margin"&&(f-=parseFloat(bH(a,"border"+bV[e]+"Width"))||0)):(f+=parseFloat(bH(a,"padding"+bV[e]))||0,c!=="padding"&&(f+=parseFloat(bH(a,"border"+bV[e]+"Width"))||0));return f}function cb(a,b,c){var d=b==="width"?a.offsetWidth:a.offsetHeight,e=!0,f=p.support.boxSizing&&p.css(a,"boxSizing")==="border-box";if(d<=0||d==null){d=bH(a,b);if(d<0||d==null)d=a.style[b];if(bQ.test(d))return d;e=f&&(p.support.boxSizingReliable||d===a.style[b]),d=parseFloat(d)||0}return d+ca(a,b,c||(f?"border":"content"),e)+"px"}function cc(a){if(bS[a])return bS[a];var b=p("<"+a+">").appendTo(e.body),c=b.css("display");b.remove();if(c==="none"||c===""){bI=e.body.appendChild(bI||p.extend(e.createElement("iframe"),{frameBorder:0,width:0,height:0}));if(!bJ||!bI.createElement)bJ=(bI.contentWindow||bI.contentDocument).document,bJ.write("<!doctype html><html><body>"),bJ.close();b=bJ.body.appendChild(bJ.createElement(a)),c=bH(b,"display"),e.body.removeChild(bI)}return bS[a]=c,c}function ci(a,b,c,d){var e;if(p.isArray(b))p.each(b,function(b,e){c||ce.test(a)?d(a,e):ci(a+"["+(typeof e=="object"?b:"")+"]",e,c,d)});else if(!c&&p.type(b)==="object")for(e in b)ci(a+"["+e+"]",b[e],c,d);else d(a,b)}function cz(a){return function(b,c){typeof b!="string"&&(c=b,b="*");var d,e,f,g=b.toLowerCase().split(s),h=0,i=g.length;if(p.isFunction(c))for(;h<i;h++)d=g[h],f=/^\+/.test(d),f&&(d=d.substr(1)||"*"),e=a[d]=a[d]||[],e[f?"unshift":"push"](c)}}function cA(a,c,d,e,f,g){f=f||c.dataTypes[0],g=g||{},g[f]=!0;var h,i=a[f],j=0,k=i?i.length:0,l=a===cv;for(;j<k&&(l||!h);j++)h=i[j](c,d,e),typeof h=="string"&&(!l||g[h]?h=b:(c.dataTypes.unshift(h),h=cA(a,c,d,e,h,g)));return(l||!h)&&!g["*"]&&(h=cA(a,c,d,e,"*",g)),h}function cB(a,c){var d,e,f=p.ajaxSettings.flatOptions||{};for(d in c)c[d]!==b&&((f[d]?a:e||(e={}))[d]=c[d]);e&&p.extend(!0,a,e)}function cC(a,c,d){var e,f,g,h,i=a.contents,j=a.dataTypes,k=a.responseFields;for(f in k)f in d&&(c[k[f]]=d[f]);while(j[0]==="*")j.shift(),e===b&&(e=a.mimeType||c.getResponseHeader("content-type"));if(e)for(f in i)if(i[f]&&i[f].test(e)){j.unshift(f);break}if(j[0]in d)g=j[0];else{for(f in d){if(!j[0]||a.converters[f+" "+j[0]]){g=f;break}h||(h=f)}g=g||h}if(g)return g!==j[0]&&j.unshift(g),d[g]}function cD(a,b){var c,d,e,f,g=a.dataTypes.slice(),h=g[0],i={},j=0;a.dataFilter&&(b=a.dataFilter(b,a.dataType));if(g[1])for(c in a.converters)i[c.toLowerCase()]=a.converters[c];for(;e=g[++j];)if(e!=="*"){if(h!=="*"&&h!==e){c=i[h+" "+e]||i["* "+e];if(!c)for(d in i){f=d.split(" ");if(f[1]===e){c=i[h+" "+f[0]]||i["* "+f[0]];if(c){c===!0?c=i[d]:i[d]!==!0&&(e=f[0],g.splice(j--,0,e));break}}}if(c!==!0)if(c&&a["throws"])b=c(b);else try{b=c(b)}catch(k){return{state:"parsererror",error:c?k:"No conversion from "+h+" to "+e}}}h=e}return{state:"success",data:b}}function cL(){try{return new a.XMLHttpRequest}catch(b){}}function cM(){try{return new a.ActiveXObject("Microsoft.XMLHTTP")}catch(b){}}function cU(){return setTimeout(function(){cN=b},0),cN=p.now()}function cV(a,b){p.each(b,function(b,c){var d=(cT[b]||[]).concat(cT["*"]),e=0,f=d.length;for(;e<f;e++)if(d[e].call(a,b,c))return})}function cW(a,b,c){var d,e=0,f=0,g=cS.length,h=p.Deferred().always(function(){delete i.elem}),i=function(){var b=cN||cU(),c=Math.max(0,j.startTime+j.duration-b),d=1-(c/j.duration||0),e=0,f=j.tweens.length;for(;e<f;e++)j.tweens[e].run(d);return h.notifyWith(a,[j,d,c]),d<1&&f?c:(h.resolveWith(a,[j]),!1)},j=h.promise({elem:a,props:p.extend({},b),opts:p.extend(!0,{specialEasing:{}},c),originalProperties:b,originalOptions:c,startTime:cN||cU(),duration:c.duration,tweens:[],createTween:function(b,c,d){var e=p.Tween(a,j.opts,b,c,j.opts.specialEasing[b]||j.opts.easing);return j.tweens.push(e),e},stop:function(b){var c=0,d=b?j.tweens.length:0;for(;c<d;c++)j.tweens[c].run(1);return b?h.resolveWith(a,[j,b]):h.rejectWith(a,[j,b]),this}}),k=j.props;cX(k,j.opts.specialEasing);for(;e<g;e++){d=cS[e].call(j,a,k,j.opts);if(d)return d}return cV(j,k),p.isFunction(j.opts.start)&&j.opts.start.call(a,j),p.fx.timer(p.extend(i,{anim:j,queue:j.opts.queue,elem:a})),j.progress(j.opts.progress).done(j.opts.done,j.opts.complete).fail(j.opts.fail).always(j.opts.always)}function cX(a,b){var c,d,e,f,g;for(c in a){d=p.camelCase(c),e=b[d],f=a[c],p.isArray(f)&&(e=f[1],f=a[c]=f[0]),c!==d&&(a[d]=f,delete a[c]),g=p.cssHooks[d];if(g&&"expand"in g){f=g.expand(f),delete a[d];for(c in f)c in a||(a[c]=f[c],b[c]=e)}else b[d]=e}}function cY(a,b,c){var d,e,f,g,h,i,j,k,l=this,m=a.style,n={},o=[],q=a.nodeType&&bZ(a);c.queue||(j=p._queueHooks(a,"fx"),j.unqueued==null&&(j.unqueued=0,k=j.empty.fire,j.empty.fire=function(){j.unqueued||k()}),j.unqueued++,l.always(function(){l.always(function(){j.unqueued--,p.queue(a,"fx").length||j.empty.fire()})})),a.nodeType===1&&("height"in b||"width"in b)&&(c.overflow=[m.overflow,m.overflowX,m.overflowY],p.css(a,"display")==="inline"&&p.css(a,"float")==="none"&&(!p.support.inlineBlockNeedsLayout||cc(a.nodeName)==="inline"?m.display="inline-block":m.zoom=1)),c.overflow&&(m.overflow="hidden",p.support.shrinkWrapBlocks||l.done(function(){m.overflow=c.overflow[0],m.overflowX=c.overflow[1],m.overflowY=c.overflow[2]}));for(d in b){f=b[d];if(cP.exec(f)){delete b[d];if(f===(q?"hide":"show"))continue;o.push(d)}}g=o.length;if(g){h=p._data(a,"fxshow")||p._data(a,"fxshow",{}),q?p(a).show():l.done(function(){p(a).hide()}),l.done(function(){var b;p.removeData(a,"fxshow",!0);for(b in n)p.style(a,b,n[b])});for(d=0;d<g;d++)e=o[d],i=l.createTween(e,q?h[e]:0),n[e]=h[e]||p.style(a,e),e in h||(h[e]=i.start,q&&(i.end=i.start,i.start=e==="width"||e==="height"?1:0))}}function cZ(a,b,c,d,e){return new cZ.prototype.init(a,b,c,d,e)}function c$(a,b){var c,d={height:a},e=0;b=b?1:0;for(;e<4;e+=2-b)c=bV[e],d["margin"+c]=d["padding"+c]=a;return b&&(d.opacity=d.width=a),d}function da(a){return p.isWindow(a)?a:a.nodeType===9?a.defaultView||a.parentWindow:!1}var c,d,e=a.document,f=a.location,g=a.navigator,h=a.jQuery,i=a.$,j=Array.prototype.push,k=Array.prototype.slice,l=Array.prototype.indexOf,m=Object.prototype.toString,n=Object.prototype.hasOwnProperty,o=String.prototype.trim,p=function(a,b){return new p.fn.init(a,b,c)},q=/[\-+]?(?:\d*\.|)\d+(?:[eE][\-+]?\d+|)/.source,r=/\S/,s=/\s+/,t=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,u=/^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/,v=/^<(\w+)\s*\/?>(?:<\/\1>|)$/,w=/^[\],:{}\s]*$/,x=/(?:^|:|,)(?:\s*\[)+/g,y=/\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,z=/"[^"\\\r\n]*"|true|false|null|-?(?:\d\d*\.|)\d+(?:[eE][\-+]?\d+|)/g,A=/^-ms-/,B=/-([\da-z])/gi,C=function(a,b){return(b+"").toUpperCase()},D=function(){e.addEventListener?(e.removeEventListener("DOMContentLoaded",D,!1),p.ready()):e.readyState==="complete"&&(e.detachEvent("onreadystatechange",D),p.ready())},E={};p.fn=p.prototype={constructor:p,init:function(a,c,d){var f,g,h,i;if(!a)return this;if(a.nodeType)return this.context=this[0]=a,this.length=1,this;if(typeof a=="string"){a.charAt(0)==="<"&&a.charAt(a.length-1)===">"&&a.length>=3?f=[null,a,null]:f=u.exec(a);if(f&&(f[1]||!c)){if(f[1])return c=c instanceof p?c[0]:c,i=c&&c.nodeType?c.ownerDocument||c:e,a=p.parseHTML(f[1],i,!0),v.test(f[1])&&p.isPlainObject(c)&&this.attr.call(a,c,!0),p.merge(this,a);g=e.getElementById(f[2]);if(g&&g.parentNode){if(g.id!==f[2])return d.find(a);this.length=1,this[0]=g}return this.context=e,this.selector=a,this}return!c||c.jquery?(c||d).find(a):this.constructor(c).find(a)}return p.isFunction(a)?d.ready(a):(a.selector!==b&&(this.selector=a.selector,this.context=a.context),p.makeArray(a,this))},selector:"",jquery:"1.8.2",length:0,size:function(){return this.length},toArray:function(){return k.call(this)},get:function(a){return a==null?this.toArray():a<0?this[this.length+a]:this[a]},pushStack:function(a,b,c){var d=p.merge(this.constructor(),a);return d.prevObject=this,d.context=this.context,b==="find"?d.selector=this.selector+(this.selector?" ":"")+c:b&&(d.selector=this.selector+"."+b+"("+c+")"),d},each:function(a,b){return p.each(this,a,b)},ready:function(a){return p.ready.promise().done(a),this},eq:function(a){return a=+a,a===-1?this.slice(a):this.slice(a,a+1)},first:function(){return this.eq(0)},last:function(){return this.eq(-1)},slice:function(){return this.pushStack(k.apply(this,arguments),"slice",k.call(arguments).join(","))},map:function(a){return this.pushStack(p.map(this,function(b,c){return a.call(b,c,b)}))},end:function(){return this.prevObject||this.constructor(null)},push:j,sort:[].sort,splice:[].splice},p.fn.init.prototype=p.fn,p.extend=p.fn.extend=function(){var a,c,d,e,f,g,h=arguments[0]||{},i=1,j=arguments.length,k=!1;typeof h=="boolean"&&(k=h,h=arguments[1]||{},i=2),typeof h!="object"&&!p.isFunction(h)&&(h={}),j===i&&(h=this,--i);for(;i<j;i++)if((a=arguments[i])!=null)for(c in a){d=h[c],e=a[c];if(h===e)continue;k&&e&&(p.isPlainObject(e)||(f=p.isArray(e)))?(f?(f=!1,g=d&&p.isArray(d)?d:[]):g=d&&p.isPlainObject(d)?d:{},h[c]=p.extend(k,g,e)):e!==b&&(h[c]=e)}return h},p.extend({noConflict:function(b){return a.$===p&&(a.$=i),b&&a.jQuery===p&&(a.jQuery=h),p},isReady:!1,readyWait:1,holdReady:function(a){a?p.readyWait++:p.ready(!0)},ready:function(a){if(a===!0?--p.readyWait:p.isReady)return;if(!e.body)return setTimeout(p.ready,1);p.isReady=!0;if(a!==!0&&--p.readyWait>0)return;d.resolveWith(e,[p]),p.fn.trigger&&p(e).trigger("ready").off("ready")},isFunction:function(a){return p.type(a)==="function"},isArray:Array.isArray||function(a){return p.type(a)==="array"},isWindow:function(a){return a!=null&&a==a.window},isNumeric:function(a){return!isNaN(parseFloat(a))&&isFinite(a)},type:function(a){return a==null?String(a):E[m.call(a)]||"object"},isPlainObject:function(a){if(!a||p.type(a)!=="object"||a.nodeType||p.isWindow(a))return!1;try{if(a.constructor&&!n.call(a,"constructor")&&!n.call(a.constructor.prototype,"isPrototypeOf"))return!1}catch(c){return!1}var d;for(d in a);return d===b||n.call(a,d)},isEmptyObject:function(a){var b;for(b in a)return!1;return!0},error:function(a){throw new Error(a)},parseHTML:function(a,b,c){var d;return!a||typeof a!="string"?null:(typeof b=="boolean"&&(c=b,b=0),b=b||e,(d=v.exec(a))?[b.createElement(d[1])]:(d=p.buildFragment([a],b,c?null:[]),p.merge([],(d.cacheable?p.clone(d.fragment):d.fragment).childNodes)))},parseJSON:function(b){if(!b||typeof b!="string")return null;b=p.trim(b);if(a.JSON&&a.JSON.parse)return a.JSON.parse(b);if(w.test(b.replace(y,"@").replace(z,"]").replace(x,"")))return(new Function("return "+b))();p.error("Invalid JSON: "+b)},parseXML:function(c){var d,e;if(!c||typeof c!="string")return null;try{a.DOMParser?(e=new DOMParser,d=e.parseFromString(c,"text/xml")):(d=new ActiveXObject("Microsoft.XMLDOM"),d.async="false",d.loadXML(c))}catch(f){d=b}return(!d||!d.documentElement||d.getElementsByTagName("parsererror").length)&&p.error("Invalid XML: "+c),d},noop:function(){},globalEval:function(b){b&&r.test(b)&&(a.execScript||function(b){a.eval.call(a,b)})(b)},camelCase:function(a){return a.replace(A,"ms-").replace(B,C)},nodeName:function(a,b){return a.nodeName&&a.nodeName.toLowerCase()===b.toLowerCase()},each:function(a,c,d){var e,f=0,g=a.length,h=g===b||p.isFunction(a);if(d){if(h){for(e in a)if(c.apply(a[e],d)===!1)break}else for(;f<g;)if(c.apply(a[f++],d)===!1)break}else if(h){for(e in a)if(c.call(a[e],e,a[e])===!1)break}else for(;f<g;)if(c.call(a[f],f,a[f++])===!1)break;return a},trim:o&&!o.call(" ")?function(a){return a==null?"":o.call(a)}:function(a){return a==null?"":(a+"").replace(t,"")},makeArray:function(a,b){var c,d=b||[];return a!=null&&(c=p.type(a),a.length==null||c==="string"||c==="function"||c==="regexp"||p.isWindow(a)?j.call(d,a):p.merge(d,a)),d},inArray:function(a,b,c){var d;if(b){if(l)return l.call(b,a,c);d=b.length,c=c?c<0?Math.max(0,d+c):c:0;for(;c<d;c++)if(c in b&&b[c]===a)return c}return-1},merge:function(a,c){var d=c.length,e=a.length,f=0;if(typeof d=="number")for(;f<d;f++)a[e++]=c[f];else while(c[f]!==b)a[e++]=c[f++];return a.length=e,a},grep:function(a,b,c){var d,e=[],f=0,g=a.length;c=!!c;for(;f<g;f++)d=!!b(a[f],f),c!==d&&e.push(a[f]);return e},map:function(a,c,d){var e,f,g=[],h=0,i=a.length,j=a instanceof p||i!==b&&typeof i=="number"&&(i>0&&a[0]&&a[i-1]||i===0||p.isArray(a));if(j)for(;h<i;h++)e=c(a[h],h,d),e!=null&&(g[g.length]=e);else for(f in a)e=c(a[f],f,d),e!=null&&(g[g.length]=e);return g.concat.apply([],g)},guid:1,proxy:function(a,c){var d,e,f;return typeof c=="string"&&(d=a[c],c=a,a=d),p.isFunction(a)?(e=k.call(arguments,2),f=function(){return a.apply(c,e.concat(k.call(arguments)))},f.guid=a.guid=a.guid||p.guid++,f):b},access:function(a,c,d,e,f,g,h){var i,j=d==null,k=0,l=a.length;if(d&&typeof d=="object"){for(k in d)p.access(a,c,k,d[k],1,g,e);f=1}else if(e!==b){i=h===b&&p.isFunction(e),j&&(i?(i=c,c=function(a,b,c){return i.call(p(a),c)}):(c.call(a,e),c=null));if(c)for(;k<l;k++)c(a[k],d,i?e.call(a[k],k,c(a[k],d)):e,h);f=1}return f?a:j?c.call(a):l?c(a[0],d):g},now:function(){return(new Date).getTime()}}),p.ready.promise=function(b){if(!d){d=p.Deferred();if(e.readyState==="complete")setTimeout(p.ready,1);else if(e.addEventListener)e.addEventListener("DOMContentLoaded",D,!1),a.addEventListener("load",p.ready,!1);else{e.attachEvent("onreadystatechange",D),a.attachEvent("onload",p.ready);var c=!1;try{c=a.frameElement==null&&e.documentElement}catch(f){}c&&c.doScroll&&function g(){if(!p.isReady){try{c.doScroll("left")}catch(a){return setTimeout(g,50)}p.ready()}}()}}return d.promise(b)},p.each("Boolean Number String Function Array Date RegExp Object".split(" "),function(a,b){E["[object "+b+"]"]=b.toLowerCase()}),c=p(e);var F={};p.Callbacks=function(a){a=typeof a=="string"?F[a]||G(a):p.extend({},a);var c,d,e,f,g,h,i=[],j=!a.once&&[],k=function(b){c=a.memory&&b,d=!0,h=f||0,f=0,g=i.length,e=!0;for(;i&&h<g;h++)if(i[h].apply(b[0],b[1])===!1&&a.stopOnFalse){c=!1;break}e=!1,i&&(j?j.length&&k(j.shift()):c?i=[]:l.disable())},l={add:function(){if(i){var b=i.length;(function d(b){p.each(b,function(b,c){var e=p.type(c);e==="function"&&(!a.unique||!l.has(c))?i.push(c):c&&c.length&&e!=="string"&&d(c)})})(arguments),e?g=i.length:c&&(f=b,k(c))}return this},remove:function(){return i&&p.each(arguments,function(a,b){var c;while((c=p.inArray(b,i,c))>-1)i.splice(c,1),e&&(c<=g&&g--,c<=h&&h--)}),this},has:function(a){return p.inArray(a,i)>-1},empty:function(){return i=[],this},disable:function(){return i=j=c=b,this},disabled:function(){return!i},lock:function(){return j=b,c||l.disable(),this},locked:function(){return!j},fireWith:function(a,b){return b=b||[],b=[a,b.slice?b.slice():b],i&&(!d||j)&&(e?j.push(b):k(b)),this},fire:function(){return l.fireWith(this,arguments),this},fired:function(){return!!d}};return l},p.extend({Deferred:function(a){var b=[["resolve","done",p.Callbacks("once memory"),"resolved"],["reject","fail",p.Callbacks("once memory"),"rejected"],["notify","progress",p.Callbacks("memory")]],c="pending",d={state:function(){return c},always:function(){return e.done(arguments).fail(arguments),this},then:function(){var a=arguments;return p.Deferred(function(c){p.each(b,function(b,d){var f=d[0],g=a[b];e[d[1]](p.isFunction(g)?function(){var a=g.apply(this,arguments);a&&p.isFunction(a.promise)?a.promise().done(c.resolve).fail(c.reject).progress(c.notify):c[f+"With"](this===e?c:this,[a])}:c[f])}),a=null}).promise()},promise:function(a){return a!=null?p.extend(a,d):d}},e={};return d.pipe=d.then,p.each(b,function(a,f){var g=f[2],h=f[3];d[f[1]]=g.add,h&&g.add(function(){c=h},b[a^1][2].disable,b[2][2].lock),e[f[0]]=g.fire,e[f[0]+"With"]=g.fireWith}),d.promise(e),a&&a.call(e,e),e},when:function(a){var b=0,c=k.call(arguments),d=c.length,e=d!==1||a&&p.isFunction(a.promise)?d:0,f=e===1?a:p.Deferred(),g=function(a,b,c){return function(d){b[a]=this,c[a]=arguments.length>1?k.call(arguments):d,c===h?f.notifyWith(b,c):--e||f.resolveWith(b,c)}},h,i,j;if(d>1){h=new Array(d),i=new Array(d),j=new Array(d);for(;b<d;b++)c[b]&&p.isFunction(c[b].promise)?c[b].promise().done(g(b,j,c)).fail(f.reject).progress(g(b,i,h)):--e}return e||f.resolveWith(j,c),f.promise()}}),p.support=function(){var b,c,d,f,g,h,i,j,k,l,m,n=e.createElement("div");n.setAttribute("className","t"),n.innerHTML="  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>",c=n.getElementsByTagName("*"),d=n.getElementsByTagName("a")[0],d.style.cssText="top:1px;float:left;opacity:.5";if(!c||!c.length)return{};f=e.createElement("select"),g=f.appendChild(e.createElement("option")),h=n.getElementsByTagName("input")[0],b={leadingWhitespace:n.firstChild.nodeType===3,tbody:!n.getElementsByTagName("tbody").length,htmlSerialize:!!n.getElementsByTagName("link").length,style:/top/.test(d.getAttribute("style")),hrefNormalized:d.getAttribute("href")==="/a",opacity:/^0.5/.test(d.style.opacity),cssFloat:!!d.style.cssFloat,checkOn:h.value==="on",optSelected:g.selected,getSetAttribute:n.className!=="t",enctype:!!e.createElement("form").enctype,html5Clone:e.createElement("nav").cloneNode(!0).outerHTML!=="<:nav></:nav>",boxModel:e.compatMode==="CSS1Compat",submitBubbles:!0,changeBubbles:!0,focusinBubbles:!1,deleteExpando:!0,noCloneEvent:!0,inlineBlockNeedsLayout:!1,shrinkWrapBlocks:!1,reliableMarginRight:!0,boxSizingReliable:!0,pixelPosition:!1},h.checked=!0,b.noCloneChecked=h.cloneNode(!0).checked,f.disabled=!0,b.optDisabled=!g.disabled;try{delete n.test}catch(o){b.deleteExpando=!1}!n.addEventListener&&n.attachEvent&&n.fireEvent&&(n.attachEvent("onclick",m=function(){b.noCloneEvent=!1}),n.cloneNode(!0).fireEvent("onclick"),n.detachEvent("onclick",m)),h=e.createElement("input"),h.value="t",h.setAttribute("type","radio"),b.radioValue=h.value==="t",h.setAttribute("checked","checked"),h.setAttribute("name","t"),n.appendChild(h),i=e.createDocumentFragment(),i.appendChild(n.lastChild),b.checkClone=i.cloneNode(!0).cloneNode(!0).lastChild.checked,b.appendChecked=h.checked,i.removeChild(h),i.appendChild(n);if(n.attachEvent)for(k in{submit:!0,change:!0,focusin:!0})j="on"+k,l=j in n,l||(n.setAttribute(j,"return;"),l=typeof n[j]=="function"),b[k+"Bubbles"]=l;return p(function(){var c,d,f,g,h="padding:0;margin:0;border:0;display:block;overflow:hidden;",i=e.getElementsByTagName("body")[0];if(!i)return;c=e.createElement("div"),c.style.cssText="visibility:hidden;border:0;width:0;height:0;position:static;top:0;margin-top:1px",i.insertBefore(c,i.firstChild),d=e.createElement("div"),c.appendChild(d),d.innerHTML="<table><tr><td></td><td>t</td></tr></table>",f=d.getElementsByTagName("td"),f[0].style.cssText="padding:0;margin:0;border:0;display:none",l=f[0].offsetHeight===0,f[0].style.display="",f[1].style.display="none",b.reliableHiddenOffsets=l&&f[0].offsetHeight===0,d.innerHTML="",d.style.cssText="box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;",b.boxSizing=d.offsetWidth===4,b.doesNotIncludeMarginInBodyOffset=i.offsetTop!==1,a.getComputedStyle&&(b.pixelPosition=(a.getComputedStyle(d,null)||{}).top!=="1%",b.boxSizingReliable=(a.getComputedStyle(d,null)||{width:"4px"}).width==="4px",g=e.createElement("div"),g.style.cssText=d.style.cssText=h,g.style.marginRight=g.style.width="0",d.style.width="1px",d.appendChild(g),b.reliableMarginRight=!parseFloat((a.getComputedStyle(g,null)||{}).marginRight)),typeof d.style.zoom!="undefined"&&(d.innerHTML="",d.style.cssText=h+"width:1px;padding:1px;display:inline;zoom:1",b.inlineBlockNeedsLayout=d.offsetWidth===3,d.style.display="block",d.style.overflow="visible",d.innerHTML="<div></div>",d.firstChild.style.width="5px",b.shrinkWrapBlocks=d.offsetWidth!==3,c.style.zoom=1),i.removeChild(c),c=d=f=g=null}),i.removeChild(n),c=d=f=g=h=i=n=null,b}();var H=/(?:\{[\s\S]*\}|\[[\s\S]*\])$/,I=/([A-Z])/g;p.extend({cache:{},deletedIds:[],uuid:0,expando:"jQuery"+(p.fn.jquery+Math.random()).replace(/\D/g,""),noData:{embed:!0,object:"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",applet:!0},hasData:function(a){return a=a.nodeType?p.cache[a[p.expando]]:a[p.expando],!!a&&!K(a)},data:function(a,c,d,e){if(!p.acceptData(a))return;var f,g,h=p.expando,i=typeof c=="string",j=a.nodeType,k=j?p.cache:a,l=j?a[h]:a[h]&&h;if((!l||!k[l]||!e&&!k[l].data)&&i&&d===b)return;l||(j?a[h]=l=p.deletedIds.pop()||p.guid++:l=h),k[l]||(k[l]={},j||(k[l].toJSON=p.noop));if(typeof c=="object"||typeof c=="function")e?k[l]=p.extend(k[l],c):k[l].data=p.extend(k[l].data,c);return f=k[l],e||(f.data||(f.data={}),f=f.data),d!==b&&(f[p.camelCase(c)]=d),i?(g=f[c],g==null&&(g=f[p.camelCase(c)])):g=f,g},removeData:function(a,b,c){if(!p.acceptData(a))return;var d,e,f,g=a.nodeType,h=g?p.cache:a,i=g?a[p.expando]:p.expando;if(!h[i])return;if(b){d=c?h[i]:h[i].data;if(d){p.isArray(b)||(b in d?b=[b]:(b=p.camelCase(b),b in d?b=[b]:b=b.split(" ")));for(e=0,f=b.length;e<f;e++)delete d[b[e]];if(!(c?K:p.isEmptyObject)(d))return}}if(!c){delete h[i].data;if(!K(h[i]))return}g?p.cleanData([a],!0):p.support.deleteExpando||h!=h.window?delete h[i]:h[i]=null},_data:function(a,b,c){return p.data(a,b,c,!0)},acceptData:function(a){var b=a.nodeName&&p.noData[a.nodeName.toLowerCase()];return!b||b!==!0&&a.getAttribute("classid")===b}}),p.fn.extend({data:function(a,c){var d,e,f,g,h,i=this[0],j=0,k=null;if(a===b){if(this.length){k=p.data(i);if(i.nodeType===1&&!p._data(i,"parsedAttrs")){f=i.attributes;for(h=f.length;j<h;j++)g=f[j].name,g.indexOf("data-")||(g=p.camelCase(g.substring(5)),J(i,g,k[g]));p._data(i,"parsedAttrs",!0)}}return k}return typeof a=="object"?this.each(function(){p.data(this,a)}):(d=a.split(".",2),d[1]=d[1]?"."+d[1]:"",e=d[1]+"!",p.access(this,function(c){if(c===b)return k=this.triggerHandler("getData"+e,[d[0]]),k===b&&i&&(k=p.data(i,a),k=J(i,a,k)),k===b&&d[1]?this.data(d[0]):k;d[1]=c,this.each(function(){var b=p(this);b.triggerHandler("setData"+e,d),p.data(this,a,c),b.triggerHandler("changeData"+e,d)})},null,c,arguments.length>1,null,!1))},removeData:function(a){return this.each(function(){p.removeData(this,a)})}}),p.extend({queue:function(a,b,c){var d;if(a)return b=(b||"fx")+"queue",d=p._data(a,b),c&&(!d||p.isArray(c)?d=p._data(a,b,p.makeArray(c)):d.push(c)),d||[]},dequeue:function(a,b){b=b||"fx";var c=p.queue(a,b),d=c.length,e=c.shift(),f=p._queueHooks(a,b),g=function(){p.dequeue(a,b)};e==="inprogress"&&(e=c.shift(),d--),e&&(b==="fx"&&c.unshift("inprogress"),delete f.stop,e.call(a,g,f)),!d&&f&&f.empty.fire()},_queueHooks:function(a,b){var c=b+"queueHooks";return p._data(a,c)||p._data(a,c,{empty:p.Callbacks("once memory").add(function(){p.removeData(a,b+"queue",!0),p.removeData(a,c,!0)})})}}),p.fn.extend({queue:function(a,c){var d=2;return typeof a!="string"&&(c=a,a="fx",d--),arguments.length<d?p.queue(this[0],a):c===b?this:this.each(function(){var b=p.queue(this,a,c);p._queueHooks(this,a),a==="fx"&&b[0]!=="inprogress"&&p.dequeue(this,a)})},dequeue:function(a){return this.each(function(){p.dequeue(this,a)})},delay:function(a,b){return a=p.fx?p.fx.speeds[a]||a:a,b=b||"fx",this.queue(b,function(b,c){var d=setTimeout(b,a);c.stop=function(){clearTimeout(d)}})},clearQueue:function(a){return this.queue(a||"fx",[])},promise:function(a,c){var d,e=1,f=p.Deferred(),g=this,h=this.length,i=function(){--e||f.resolveWith(g,[g])};typeof a!="string"&&(c=a,a=b),a=a||"fx";while(h--)d=p._data(g[h],a+"queueHooks"),d&&d.empty&&(e++,d.empty.add(i));return i(),f.promise(c)}});var L,M,N,O=/[\t\r\n]/g,P=/\r/g,Q=/^(?:button|input)$/i,R=/^(?:button|input|object|select|textarea)$/i,S=/^a(?:rea|)$/i,T=/^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,U=p.support.getSetAttribute;p.fn.extend({attr:function(a,b){return p.access(this,p.attr,a,b,arguments.length>1)},removeAttr:function(a){return this.each(function(){p.removeAttr(this,a)})},prop:function(a,b){return p.access(this,p.prop,a,b,arguments.length>1)},removeProp:function(a){return a=p.propFix[a]||a,this.each(function(){try{this[a]=b,delete this[a]}catch(c){}})},addClass:function(a){var b,c,d,e,f,g,h;if(p.isFunction(a))return this.each(function(b){p(this).addClass(a.call(this,b,this.className))});if(a&&typeof a=="string"){b=a.split(s);for(c=0,d=this.length;c<d;c++){e=this[c];if(e.nodeType===1)if(!e.className&&b.length===1)e.className=a;else{f=" "+e.className+" ";for(g=0,h=b.length;g<h;g++)f.indexOf(" "+b[g]+" ")<0&&(f+=b[g]+" ");e.className=p.trim(f)}}}return this},removeClass:function(a){var c,d,e,f,g,h,i;if(p.isFunction(a))return this.each(function(b){p(this).removeClass(a.call(this,b,this.className))});if(a&&typeof a=="string"||a===b){c=(a||"").split(s);for(h=0,i=this.length;h<i;h++){e=this[h];if(e.nodeType===1&&e.className){d=(" "+e.className+" ").replace(O," ");for(f=0,g=c.length;f<g;f++)while(d.indexOf(" "+c[f]+" ")>=0)d=d.replace(" "+c[f]+" "," ");e.className=a?p.trim(d):""}}}return this},toggleClass:function(a,b){var c=typeof a,d=typeof b=="boolean";return p.isFunction(a)?this.each(function(c){p(this).toggleClass(a.call(this,c,this.className,b),b)}):this.each(function(){if(c==="string"){var e,f=0,g=p(this),h=b,i=a.split(s);while(e=i[f++])h=d?h:!g.hasClass(e),g[h?"addClass":"removeClass"](e)}else if(c==="undefined"||c==="boolean")this.className&&p._data(this,"__className__",this.className),this.className=this.className||a===!1?"":p._data(this,"__className__")||""})},hasClass:function(a){var b=" "+a+" ",c=0,d=this.length;for(;c<d;c++)if(this[c].nodeType===1&&(" "+this[c].className+" ").replace(O," ").indexOf(b)>=0)return!0;return!1},val:function(a){var c,d,e,f=this[0];if(!arguments.length){if(f)return c=p.valHooks[f.type]||p.valHooks[f.nodeName.toLowerCase()],c&&"get"in c&&(d=c.get(f,"value"))!==b?d:(d=f.value,typeof d=="string"?d.replace(P,""):d==null?"":d);return}return e=p.isFunction(a),this.each(function(d){var f,g=p(this);if(this.nodeType!==1)return;e?f=a.call(this,d,g.val()):f=a,f==null?f="":typeof f=="number"?f+="":p.isArray(f)&&(f=p.map(f,function(a){return a==null?"":a+""})),c=p.valHooks[this.type]||p.valHooks[this.nodeName.toLowerCase()];if(!c||!("set"in c)||c.set(this,f,"value")===b)this.value=f})}}),p.extend({valHooks:{option:{get:function(a){var b=a.attributes.value;return!b||b.specified?a.value:a.text}},select:{get:function(a){var b,c,d,e,f=a.selectedIndex,g=[],h=a.options,i=a.type==="select-one";if(f<0)return null;c=i?f:0,d=i?f+1:h.length;for(;c<d;c++){e=h[c];if(e.selected&&(p.support.optDisabled?!e.disabled:e.getAttribute("disabled")===null)&&(!e.parentNode.disabled||!p.nodeName(e.parentNode,"optgroup"))){b=p(e).val();if(i)return b;g.push(b)}}return i&&!g.length&&h.length?p(h[f]).val():g},set:function(a,b){var c=p.makeArray(b);return p(a).find("option").each(function(){this.selected=p.inArray(p(this).val(),c)>=0}),c.length||(a.selectedIndex=-1),c}}},attrFn:{},attr:function(a,c,d,e){var f,g,h,i=a.nodeType;if(!a||i===3||i===8||i===2)return;if(e&&p.isFunction(p.fn[c]))return p(a)[c](d);if(typeof a.getAttribute=="undefined")return p.prop(a,c,d);h=i!==1||!p.isXMLDoc(a),h&&(c=c.toLowerCase(),g=p.attrHooks[c]||(T.test(c)?M:L));if(d!==b){if(d===null){p.removeAttr(a,c);return}return g&&"set"in g&&h&&(f=g.set(a,d,c))!==b?f:(a.setAttribute(c,d+""),d)}return g&&"get"in g&&h&&(f=g.get(a,c))!==null?f:(f=a.getAttribute(c),f===null?b:f)},removeAttr:function(a,b){var c,d,e,f,g=0;if(b&&a.nodeType===1){d=b.split(s);for(;g<d.length;g++)e=d[g],e&&(c=p.propFix[e]||e,f=T.test(e),f||p.attr(a,e,""),a.removeAttribute(U?e:c),f&&c in a&&(a[c]=!1))}},attrHooks:{type:{set:function(a,b){if(Q.test(a.nodeName)&&a.parentNode)p.error("type property can't be changed");else if(!p.support.radioValue&&b==="radio"&&p.nodeName(a,"input")){var c=a.value;return a.setAttribute("type",b),c&&(a.value=c),b}}},value:{get:function(a,b){return L&&p.nodeName(a,"button")?L.get(a,b):b in a?a.value:null},set:function(a,b,c){if(L&&p.nodeName(a,"button"))return L.set(a,b,c);a.value=b}}},propFix:{tabindex:"tabIndex",readonly:"readOnly","for":"htmlFor","class":"className",maxlength:"maxLength",cellspacing:"cellSpacing",cellpadding:"cellPadding",rowspan:"rowSpan",colspan:"colSpan",usemap:"useMap",frameborder:"frameBorder",contenteditable:"contentEditable"},prop:function(a,c,d){var e,f,g,h=a.nodeType;if(!a||h===3||h===8||h===2)return;return g=h!==1||!p.isXMLDoc(a),g&&(c=p.propFix[c]||c,f=p.propHooks[c]),d!==b?f&&"set"in f&&(e=f.set(a,d,c))!==b?e:a[c]=d:f&&"get"in f&&(e=f.get(a,c))!==null?e:a[c]},propHooks:{tabIndex:{get:function(a){var c=a.getAttributeNode("tabindex");return c&&c.specified?parseInt(c.value,10):R.test(a.nodeName)||S.test(a.nodeName)&&a.href?0:b}}}}),M={get:function(a,c){var d,e=p.prop(a,c);return e===!0||typeof e!="boolean"&&(d=a.getAttributeNode(c))&&d.nodeValue!==!1?c.toLowerCase():b},set:function(a,b,c){var d;return b===!1?p.removeAttr(a,c):(d=p.propFix[c]||c,d in a&&(a[d]=!0),a.setAttribute(c,c.toLowerCase())),c}},U||(N={name:!0,id:!0,coords:!0},L=p.valHooks.button={get:function(a,c){var d;return d=a.getAttributeNode(c),d&&(N[c]?d.value!=="":d.specified)?d.value:b},set:function(a,b,c){var d=a.getAttributeNode(c);return d||(d=e.createAttribute(c),a.setAttributeNode(d)),d.value=b+""}},p.each(["width","height"],function(a,b){p.attrHooks[b]=p.extend(p.attrHooks[b],{set:function(a,c){if(c==="")return a.setAttribute(b,"auto"),c}})}),p.attrHooks.contenteditable={get:L.get,set:function(a,b,c){b===""&&(b="false"),L.set(a,b,c)}}),p.support.hrefNormalized||p.each(["href","src","width","height"],function(a,c){p.attrHooks[c]=p.extend(p.attrHooks[c],{get:function(a){var d=a.getAttribute(c,2);return d===null?b:d}})}),p.support.style||(p.attrHooks.style={get:function(a){return a.style.cssText.toLowerCase()||b},set:function(a,b){return a.style.cssText=b+""}}),p.support.optSelected||(p.propHooks.selected=p.extend(p.propHooks.selected,{get:function(a){var b=a.parentNode;return b&&(b.selectedIndex,b.parentNode&&b.parentNode.selectedIndex),null}})),p.support.enctype||(p.propFix.enctype="encoding"),p.support.checkOn||p.each(["radio","checkbox"],function(){p.valHooks[this]={get:function(a){return a.getAttribute("value")===null?"on":a.value}}}),p.each(["radio","checkbox"],function(){p.valHooks[this]=p.extend(p.valHooks[this],{set:function(a,b){if(p.isArray(b))return a.checked=p.inArray(p(a).val(),b)>=0}})});var V=/^(?:textarea|input|select)$/i,W=/^([^\.]*|)(?:\.(.+)|)$/,X=/(?:^|\s)hover(\.\S+|)\b/,Y=/^key/,Z=/^(?:mouse|contextmenu)|click/,$=/^(?:focusinfocus|focusoutblur)$/,_=function(a){return p.event.special.hover?a:a.replace(X,"mouseenter$1 mouseleave$1")};p.event={add:function(a,c,d,e,f){var g,h,i,j,k,l,m,n,o,q,r;if(a.nodeType===3||a.nodeType===8||!c||!d||!(g=p._data(a)))return;d.handler&&(o=d,d=o.handler,f=o.selector),d.guid||(d.guid=p.guid++),i=g.events,i||(g.events=i={}),h=g.handle,h||(g.handle=h=function(a){return typeof p!="undefined"&&(!a||p.event.triggered!==a.type)?p.event.dispatch.apply(h.elem,arguments):b},h.elem=a),c=p.trim(_(c)).split(" ");for(j=0;j<c.length;j++){k=W.exec(c[j])||[],l=k[1],m=(k[2]||"").split(".").sort(),r=p.event.special[l]||{},l=(f?r.delegateType:r.bindType)||l,r=p.event.special[l]||{},n=p.extend({type:l,origType:k[1],data:e,handler:d,guid:d.guid,selector:f,needsContext:f&&p.expr.match.needsContext.test(f),namespace:m.join(".")},o),q=i[l];if(!q){q=i[l]=[],q.delegateCount=0;if(!r.setup||r.setup.call(a,e,m,h)===!1)a.addEventListener?a.addEventListener(l,h,!1):a.attachEvent&&a.attachEvent("on"+l,h)}r.add&&(r.add.call(a,n),n.handler.guid||(n.handler.guid=d.guid)),f?q.splice(q.delegateCount++,0,n):q.push(n),p.event.global[l]=!0}a=null},global:{},remove:function(a,b,c,d,e){var f,g,h,i,j,k,l,m,n,o,q,r=p.hasData(a)&&p._data(a);if(!r||!(m=r.events))return;b=p.trim(_(b||"")).split(" ");for(f=0;f<b.length;f++){g=W.exec(b[f])||[],h=i=g[1],j=g[2];if(!h){for(h in m)p.event.remove(a,h+b[f],c,d,!0);continue}n=p.event.special[h]||{},h=(d?n.delegateType:n.bindType)||h,o=m[h]||[],k=o.length,j=j?new RegExp("(^|\\.)"+j.split(".").sort().join("\\.(?:.*\\.|)")+"(\\.|$)"):null;for(l=0;l<o.length;l++)q=o[l],(e||i===q.origType)&&(!c||c.guid===q.guid)&&(!j||j.test(q.namespace))&&(!d||d===q.selector||d==="**"&&q.selector)&&(o.splice(l--,1),q.selector&&o.delegateCount--,n.remove&&n.remove.call(a,q));o.length===0&&k!==o.length&&((!n.teardown||n.teardown.call(a,j,r.handle)===!1)&&p.removeEvent(a,h,r.handle),delete m[h])}p.isEmptyObject(m)&&(delete r.handle,p.removeData(a,"events",!0))},customEvent:{getData:!0,setData:!0,changeData:!0},trigger:function(c,d,f,g){if(!f||f.nodeType!==3&&f.nodeType!==8){var h,i,j,k,l,m,n,o,q,r,s=c.type||c,t=[];if($.test(s+p.event.triggered))return;s.indexOf("!")>=0&&(s=s.slice(0,-1),i=!0),s.indexOf(".")>=0&&(t=s.split("."),s=t.shift(),t.sort());if((!f||p.event.customEvent[s])&&!p.event.global[s])return;c=typeof c=="object"?c[p.expando]?c:new p.Event(s,c):new p.Event(s),c.type=s,c.isTrigger=!0,c.exclusive=i,c.namespace=t.join("."),c.namespace_re=c.namespace?new RegExp("(^|\\.)"+t.join("\\.(?:.*\\.|)")+"(\\.|$)"):null,m=s.indexOf(":")<0?"on"+s:"";if(!f){h=p.cache;for(j in h)h[j].events&&h[j].events[s]&&p.event.trigger(c,d,h[j].handle.elem,!0);return}c.result=b,c.target||(c.target=f),d=d!=null?p.makeArray(d):[],d.unshift(c),n=p.event.special[s]||{};if(n.trigger&&n.trigger.apply(f,d)===!1)return;q=[[f,n.bindType||s]];if(!g&&!n.noBubble&&!p.isWindow(f)){r=n.delegateType||s,k=$.test(r+s)?f:f.parentNode;for(l=f;k;k=k.parentNode)q.push([k,r]),l=k;l===(f.ownerDocument||e)&&q.push([l.defaultView||l.parentWindow||a,r])}for(j=0;j<q.length&&!c.isPropagationStopped();j++)k=q[j][0],c.type=q[j][1],o=(p._data(k,"events")||{})[c.type]&&p._data(k,"handle"),o&&o.apply(k,d),o=m&&k[m],o&&p.acceptData(k)&&o.apply&&o.apply(k,d)===!1&&c.preventDefault();return c.type=s,!g&&!c.isDefaultPrevented()&&(!n._default||n._default.apply(f.ownerDocument,d)===!1)&&(s!=="click"||!p.nodeName(f,"a"))&&p.acceptData(f)&&m&&f[s]&&(s!=="focus"&&s!=="blur"||c.target.offsetWidth!==0)&&!p.isWindow(f)&&(l=f[m],l&&(f[m]=null),p.event.triggered=s,f[s](),p.event.triggered=b,l&&(f[m]=l)),c.result}return},dispatch:function(c){c=p.event.fix(c||a.event);var d,e,f,g,h,i,j,l,m,n,o=(p._data(this,"events")||{})[c.type]||[],q=o.delegateCount,r=k.call(arguments),s=!c.exclusive&&!c.namespace,t=p.event.special[c.type]||{},u=[];r[0]=c,c.delegateTarget=this;if(t.preDispatch&&t.preDispatch.call(this,c)===!1)return;if(q&&(!c.button||c.type!=="click"))for(f=c.target;f!=this;f=f.parentNode||this)if(f.disabled!==!0||c.type!=="click"){h={},j=[];for(d=0;d<q;d++)l=o[d],m=l.selector,h[m]===b&&(h[m]=l.needsContext?p(m,this).index(f)>=0:p.find(m,this,null,[f]).length),h[m]&&j.push(l);j.length&&u.push({elem:f,matches:j})}o.length>q&&u.push({elem:this,matches:o.slice(q)});for(d=0;d<u.length&&!c.isPropagationStopped();d++){i=u[d],c.currentTarget=i.elem;for(e=0;e<i.matches.length&&!c.isImmediatePropagationStopped();e++){l=i.matches[e];if(s||!c.namespace&&!l.namespace||c.namespace_re&&c.namespace_re.test(l.namespace))c.data=l.data,c.handleObj=l,g=((p.event.special[l.origType]||{}).handle||l.handler).apply(i.elem,r),g!==b&&(c.result=g,g===!1&&(c.preventDefault(),c.stopPropagation()))}}return t.postDispatch&&t.postDispatch.call(this,c),c.result},props:"attrChange attrName relatedNode srcElement altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),fixHooks:{},keyHooks:{props:"char charCode key keyCode".split(" "),filter:function(a,b){return a.which==null&&(a.which=b.charCode!=null?b.charCode:b.keyCode),a}},mouseHooks:{props:"button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),filter:function(a,c){var d,f,g,h=c.button,i=c.fromElement;return a.pageX==null&&c.clientX!=null&&(d=a.target.ownerDocument||e,f=d.documentElement,g=d.body,a.pageX=c.clientX+(f&&f.scrollLeft||g&&g.scrollLeft||0)-(f&&f.clientLeft||g&&g.clientLeft||0),a.pageY=c.clientY+(f&&f.scrollTop||g&&g.scrollTop||0)-(f&&f.clientTop||g&&g.clientTop||0)),!a.relatedTarget&&i&&(a.relatedTarget=i===a.target?c.toElement:i),!a.which&&h!==b&&(a.which=h&1?1:h&2?3:h&4?2:0),a}},fix:function(a){if(a[p.expando])return a;var b,c,d=a,f=p.event.fixHooks[a.type]||{},g=f.props?this.props.concat(f.props):this.props;a=p.Event(d);for(b=g.length;b;)c=g[--b],a[c]=d[c];return a.target||(a.target=d.srcElement||e),a.target.nodeType===3&&(a.target=a.target.parentNode),a.metaKey=!!a.metaKey,f.filter?f.filter(a,d):a},special:{load:{noBubble:!0},focus:{delegateType:"focusin"},blur:{delegateType:"focusout"},beforeunload:{setup:function(a,b,c){p.isWindow(this)&&(this.onbeforeunload=c)},teardown:function(a,b){this.onbeforeunload===b&&(this.onbeforeunload=null)}}},simulate:function(a,b,c,d){var e=p.extend(new p.Event,c,{type:a,isSimulated:!0,originalEvent:{}});d?p.event.trigger(e,null,b):p.event.dispatch.call(b,e),e.isDefaultPrevented()&&c.preventDefault()}},p.event.handle=p.event.dispatch,p.removeEvent=e.removeEventListener?function(a,b,c){a.removeEventListener&&a.removeEventListener(b,c,!1)}:function(a,b,c){var d="on"+b;a.detachEvent&&(typeof a[d]=="undefined"&&(a[d]=null),a.detachEvent(d,c))},p.Event=function(a,b){if(this instanceof p.Event)a&&a.type?(this.originalEvent=a,this.type=a.type,this.isDefaultPrevented=a.defaultPrevented||a.returnValue===!1||a.getPreventDefault&&a.getPreventDefault()?bb:ba):this.type=a,b&&p.extend(this,b),this.timeStamp=a&&a.timeStamp||p.now(),this[p.expando]=!0;else return new p.Event(a,b)},p.Event.prototype={preventDefault:function(){this.isDefaultPrevented=bb;var a=this.originalEvent;if(!a)return;a.preventDefault?a.preventDefault():a.returnValue=!1},stopPropagation:function(){this.isPropagationStopped=bb;var a=this.originalEvent;if(!a)return;a.stopPropagation&&a.stopPropagation(),a.cancelBubble=!0},stopImmediatePropagation:function(){this.isImmediatePropagationStopped=bb,this.stopPropagation()},isDefaultPrevented:ba,isPropagationStopped:ba,isImmediatePropagationStopped:ba},p.each({mouseenter:"mouseover",mouseleave:"mouseout"},function(a,b){p.event.special[a]={delegateType:b,bindType:b,handle:function(a){var c,d=this,e=a.relatedTarget,f=a.handleObj,g=f.selector;if(!e||e!==d&&!p.contains(d,e))a.type=f.origType,c=f.handler.apply(this,arguments),a.type=b;return c}}}),p.support.submitBubbles||(p.event.special.submit={setup:function(){if(p.nodeName(this,"form"))return!1;p.event.add(this,"click._submit keypress._submit",function(a){var c=a.target,d=p.nodeName(c,"input")||p.nodeName(c,"button")?c.form:b;d&&!p._data(d,"_submit_attached")&&(p.event.add(d,"submit._submit",function(a){a._submit_bubble=!0}),p._data(d,"_submit_attached",!0))})},postDispatch:function(a){a._submit_bubble&&(delete a._submit_bubble,this.parentNode&&!a.isTrigger&&p.event.simulate("submit",this.parentNode,a,!0))},teardown:function(){if(p.nodeName(this,"form"))return!1;p.event.remove(this,"._submit")}}),p.support.changeBubbles||(p.event.special.change={setup:function(){if(V.test(this.nodeName)){if(this.type==="checkbox"||this.type==="radio")p.event.add(this,"propertychange._change",function(a){a.originalEvent.propertyName==="checked"&&(this._just_changed=!0)}),p.event.add(this,"click._change",function(a){this._just_changed&&!a.isTrigger&&(this._just_changed=!1),p.event.simulate("change",this,a,!0)});return!1}p.event.add(this,"beforeactivate._change",function(a){var b=a.target;V.test(b.nodeName)&&!p._data(b,"_change_attached")&&(p.event.add(b,"change._change",function(a){this.parentNode&&!a.isSimulated&&!a.isTrigger&&p.event.simulate("change",this.parentNode,a,!0)}),p._data(b,"_change_attached",!0))})},handle:function(a){var b=a.target;if(this!==b||a.isSimulated||a.isTrigger||b.type!=="radio"&&b.type!=="checkbox")return a.handleObj.handler.apply(this,arguments)},teardown:function(){return p.event.remove(this,"._change"),!V.test(this.nodeName)}}),p.support.focusinBubbles||p.each({focus:"focusin",blur:"focusout"},function(a,b){var c=0,d=function(a){p.event.simulate(b,a.target,p.event.fix(a),!0)};p.event.special[b]={setup:function(){c++===0&&e.addEventListener(a,d,!0)},teardown:function(){--c===0&&e.removeEventListener(a,d,!0)}}}),p.fn.extend({on:function(a,c,d,e,f){var g,h;if(typeof a=="object"){typeof c!="string"&&(d=d||c,c=b);for(h in a)this.on(h,c,d,a[h],f);return this}d==null&&e==null?(e=c,d=c=b):e==null&&(typeof c=="string"?(e=d,d=b):(e=d,d=c,c=b));if(e===!1)e=ba;else if(!e)return this;return f===1&&(g=e,e=function(a){return p().off(a),g.apply(this,arguments)},e.guid=g.guid||(g.guid=p.guid++)),this.each(function(){p.event.add(this,a,e,d,c)})},one:function(a,b,c,d){return this.on(a,b,c,d,1)},off:function(a,c,d){var e,f;if(a&&a.preventDefault&&a.handleObj)return e=a.handleObj,p(a.delegateTarget).off(e.namespace?e.origType+"."+e.namespace:e.origType,e.selector,e.handler),this;if(typeof a=="object"){for(f in a)this.off(f,c,a[f]);return this}if(c===!1||typeof c=="function")d=c,c=b;return d===!1&&(d=ba),this.each(function(){p.event.remove(this,a,d,c)})},bind:function(a,b,c){return this.on(a,null,b,c)},unbind:function(a,b){return this.off(a,null,b)},live:function(a,b,c){return p(this.context).on(a,this.selector,b,c),this},die:function(a,b){return p(this.context).off(a,this.selector||"**",b),this},delegate:function(a,b,c,d){return this.on(b,a,c,d)},undelegate:function(a,b,c){return arguments.length===1?this.off(a,"**"):this.off(b,a||"**",c)},trigger:function(a,b){return this.each(function(){p.event.trigger(a,b,this)})},triggerHandler:function(a,b){if(this[0])return p.event.trigger(a,b,this[0],!0)},toggle:function(a){var b=arguments,c=a.guid||p.guid++,d=0,e=function(c){var e=(p._data(this,"lastToggle"+a.guid)||0)%d;return p._data(this,"lastToggle"+a.guid,e+1),c.preventDefault(),b[e].apply(this,arguments)||!1};e.guid=c;while(d<b.length)b[d++].guid=c;return this.click(e)},hover:function(a,b){return this.mouseenter(a).mouseleave(b||a)}}),p.each("blur focus focusin focusout load resize scroll unload click dblclick mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave change select submit keydown keypress keyup error contextmenu".split(" "),function(a,b){p.fn[b]=function(a,c){return c==null&&(c=a,a=null),arguments.length>0?this.on(b,null,a,c):this.trigger(b)},Y.test(b)&&(p.event.fixHooks[b]=p.event.keyHooks),Z.test(b)&&(p.event.fixHooks[b]=p.event.mouseHooks)}),function(a,b){function bc(a,b,c,d){c=c||[],b=b||r;var e,f,i,j,k=b.nodeType;if(!a||typeof a!="string")return c;if(k!==1&&k!==9)return[];i=g(b);if(!i&&!d)if(e=P.exec(a))if(j=e[1]){if(k===9){f=b.getElementById(j);if(!f||!f.parentNode)return c;if(f.id===j)return c.push(f),c}else if(b.ownerDocument&&(f=b.ownerDocument.getElementById(j))&&h(b,f)&&f.id===j)return c.push(f),c}else{if(e[2])return w.apply(c,x.call(b.getElementsByTagName(a),0)),c;if((j=e[3])&&_&&b.getElementsByClassName)return w.apply(c,x.call(b.getElementsByClassName(j),0)),c}return bp(a.replace(L,"$1"),b,c,d,i)}function bd(a){return function(b){var c=b.nodeName.toLowerCase();return c==="input"&&b.type===a}}function be(a){return function(b){var c=b.nodeName.toLowerCase();return(c==="input"||c==="button")&&b.type===a}}function bf(a){return z(function(b){return b=+b,z(function(c,d){var e,f=a([],c.length,b),g=f.length;while(g--)c[e=f[g]]&&(c[e]=!(d[e]=c[e]))})})}function bg(a,b,c){if(a===b)return c;var d=a.nextSibling;while(d){if(d===b)return-1;d=d.nextSibling}return 1}function bh(a,b){var c,d,f,g,h,i,j,k=C[o][a];if(k)return b?0:k.slice(0);h=a,i=[],j=e.preFilter;while(h){if(!c||(d=M.exec(h)))d&&(h=h.slice(d[0].length)),i.push(f=[]);c=!1;if(d=N.exec(h))f.push(c=new q(d.shift())),h=h.slice(c.length),c.type=d[0].replace(L," ");for(g in e.filter)(d=W[g].exec(h))&&(!j[g]||(d=j[g](d,r,!0)))&&(f.push(c=new q(d.shift())),h=h.slice(c.length),c.type=g,c.matches=d);if(!c)break}return b?h.length:h?bc.error(a):C(a,i).slice(0)}function bi(a,b,d){var e=b.dir,f=d&&b.dir==="parentNode",g=u++;return b.first?function(b,c,d){while(b=b[e])if(f||b.nodeType===1)return a(b,c,d)}:function(b,d,h){if(!h){var i,j=t+" "+g+" ",k=j+c;while(b=b[e])if(f||b.nodeType===1){if((i=b[o])===k)return b.sizset;if(typeof i=="string"&&i.indexOf(j)===0){if(b.sizset)return b}else{b[o]=k;if(a(b,d,h))return b.sizset=!0,b;b.sizset=!1}}}else while(b=b[e])if(f||b.nodeType===1)if(a(b,d,h))return b}}function bj(a){return a.length>1?function(b,c,d){var e=a.length;while(e--)if(!a[e](b,c,d))return!1;return!0}:a[0]}function bk(a,b,c,d,e){var f,g=[],h=0,i=a.length,j=b!=null;for(;h<i;h++)if(f=a[h])if(!c||c(f,d,e))g.push(f),j&&b.push(h);return g}function bl(a,b,c,d,e,f){return d&&!d[o]&&(d=bl(d)),e&&!e[o]&&(e=bl(e,f)),z(function(f,g,h,i){if(f&&e)return;var j,k,l,m=[],n=[],o=g.length,p=f||bo(b||"*",h.nodeType?[h]:h,[],f),q=a&&(f||!b)?bk(p,m,a,h,i):p,r=c?e||(f?a:o||d)?[]:g:q;c&&c(q,r,h,i);if(d){l=bk(r,n),d(l,[],h,i),j=l.length;while(j--)if(k=l[j])r[n[j]]=!(q[n[j]]=k)}if(f){j=a&&r.length;while(j--)if(k=r[j])f[m[j]]=!(g[m[j]]=k)}else r=bk(r===g?r.splice(o,r.length):r),e?e(null,g,r,i):w.apply(g,r)})}function bm(a){var b,c,d,f=a.length,g=e.relative[a[0].type],h=g||e.relative[" "],i=g?1:0,j=bi(function(a){return a===b},h,!0),k=bi(function(a){return y.call(b,a)>-1},h,!0),m=[function(a,c,d){return!g&&(d||c!==l)||((b=c).nodeType?j(a,c,d):k(a,c,d))}];for(;i<f;i++)if(c=e.relative[a[i].type])m=[bi(bj(m),c)];else{c=e.filter[a[i].type].apply(null,a[i].matches);if(c[o]){d=++i;for(;d<f;d++)if(e.relative[a[d].type])break;return bl(i>1&&bj(m),i>1&&a.slice(0,i-1).join("").replace(L,"$1"),c,i<d&&bm(a.slice(i,d)),d<f&&bm(a=a.slice(d)),d<f&&a.join(""))}m.push(c)}return bj(m)}function bn(a,b){var d=b.length>0,f=a.length>0,g=function(h,i,j,k,m){var n,o,p,q=[],s=0,u="0",x=h&&[],y=m!=null,z=l,A=h||f&&e.find.TAG("*",m&&i.parentNode||i),B=t+=z==null?1:Math.E;y&&(l=i!==r&&i,c=g.el);for(;(n=A[u])!=null;u++){if(f&&n){for(o=0;p=a[o];o++)if(p(n,i,j)){k.push(n);break}y&&(t=B,c=++g.el)}d&&((n=!p&&n)&&s--,h&&x.push(n))}s+=u;if(d&&u!==s){for(o=0;p=b[o];o++)p(x,q,i,j);if(h){if(s>0)while(u--)!x[u]&&!q[u]&&(q[u]=v.call(k));q=bk(q)}w.apply(k,q),y&&!h&&q.length>0&&s+b.length>1&&bc.uniqueSort(k)}return y&&(t=B,l=z),x};return g.el=0,d?z(g):g}function bo(a,b,c,d){var e=0,f=b.length;for(;e<f;e++)bc(a,b[e],c,d);return c}function bp(a,b,c,d,f){var g,h,j,k,l,m=bh(a),n=m.length;if(!d&&m.length===1){h=m[0]=m[0].slice(0);if(h.length>2&&(j=h[0]).type==="ID"&&b.nodeType===9&&!f&&e.relative[h[1].type]){b=e.find.ID(j.matches[0].replace(V,""),b,f)[0];if(!b)return c;a=a.slice(h.shift().length)}for(g=W.POS.test(a)?-1:h.length-1;g>=0;g--){j=h[g];if(e.relative[k=j.type])break;if(l=e.find[k])if(d=l(j.matches[0].replace(V,""),R.test(h[0].type)&&b.parentNode||b,f)){h.splice(g,1),a=d.length&&h.join("");if(!a)return w.apply(c,x.call(d,0)),c;break}}}return i(a,m)(d,b,f,c,R.test(a)),c}function bq(){}var c,d,e,f,g,h,i,j,k,l,m=!0,n="undefined",o=("sizcache"+Math.random()).replace(".",""),q=String,r=a.document,s=r.documentElement,t=0,u=0,v=[].pop,w=[].push,x=[].slice,y=[].indexOf||function(a){var b=0,c=this.length;for(;b<c;b++)if(this[b]===a)return b;return-1},z=function(a,b){return a[o]=b==null||b,a},A=function(){var a={},b=[];return z(function(c,d){return b.push(c)>e.cacheLength&&delete a[b.shift()],a[c]=d},a)},B=A(),C=A(),D=A(),E="[\\x20\\t\\r\\n\\f]",F="(?:\\\\.|[-\\w]|[^\\x00-\\xa0])+",G=F.replace("w","w#"),H="([*^$|!~]?=)",I="\\["+E+"*("+F+")"+E+"*(?:"+H+E+"*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|("+G+")|)|)"+E+"*\\]",J=":("+F+")(?:\\((?:(['\"])((?:\\\\.|[^\\\\])*?)\\2|([^()[\\]]*|(?:(?:"+I+")|[^:]|\\\\.)*|.*))\\)|)",K=":(even|odd|eq|gt|lt|nth|first|last)(?:\\("+E+"*((?:-\\d)?\\d*)"+E+"*\\)|)(?=[^-]|$)",L=new RegExp("^"+E+"+|((?:^|[^\\\\])(?:\\\\.)*)"+E+"+$","g"),M=new RegExp("^"+E+"*,"+E+"*"),N=new RegExp("^"+E+"*([\\x20\\t\\r\\n\\f>+~])"+E+"*"),O=new RegExp(J),P=/^(?:#([\w\-]+)|(\w+)|\.([\w\-]+))$/,Q=/^:not/,R=/[\x20\t\r\n\f]*[+~]/,S=/:not\($/,T=/h\d/i,U=/input|select|textarea|button/i,V=/\\(?!\\)/g,W={ID:new RegExp("^#("+F+")"),CLASS:new RegExp("^\\.("+F+")"),NAME:new RegExp("^\\[name=['\"]?("+F+")['\"]?\\]"),TAG:new RegExp("^("+F.replace("w","w*")+")"),ATTR:new RegExp("^"+I),PSEUDO:new RegExp("^"+J),POS:new RegExp(K,"i"),CHILD:new RegExp("^:(only|nth|first|last)-child(?:\\("+E+"*(even|odd|(([+-]|)(\\d*)n|)"+E+"*(?:([+-]|)"+E+"*(\\d+)|))"+E+"*\\)|)","i"),needsContext:new RegExp("^"+E+"*[>+~]|"+K,"i")},X=function(a){var b=r.createElement("div");try{return a(b)}catch(c){return!1}finally{b=null}},Y=X(function(a){return a.appendChild(r.createComment("")),!a.getElementsByTagName("*").length}),Z=X(function(a){return a.innerHTML="<a href='#'></a>",a.firstChild&&typeof a.firstChild.getAttribute!==n&&a.firstChild.getAttribute("href")==="#"}),$=X(function(a){a.innerHTML="<select></select>";var b=typeof a.lastChild.getAttribute("multiple");return b!=="boolean"&&b!=="string"}),_=X(function(a){return a.innerHTML="<div class='hidden e'></div><div class='hidden'></div>",!a.getElementsByClassName||!a.getElementsByClassName("e").length?!1:(a.lastChild.className="e",a.getElementsByClassName("e").length===2)}),ba=X(function(a){a.id=o+0,a.innerHTML="<a name='"+o+"'></a><div name='"+o+"'></div>",s.insertBefore(a,s.firstChild);var b=r.getElementsByName&&r.getElementsByName(o).length===2+r.getElementsByName(o+0).length;return d=!r.getElementById(o),s.removeChild(a),b});try{x.call(s.childNodes,0)[0].nodeType}catch(bb){x=function(a){var b,c=[];for(;b=this[a];a++)c.push(b);return c}}bc.matches=function(a,b){return bc(a,null,null,b)},bc.matchesSelector=function(a,b){return bc(b,null,null,[a]).length>0},f=bc.getText=function(a){var b,c="",d=0,e=a.nodeType;if(e){if(e===1||e===9||e===11){if(typeof a.textContent=="string")return a.textContent;for(a=a.firstChild;a;a=a.nextSibling)c+=f(a)}else if(e===3||e===4)return a.nodeValue}else for(;b=a[d];d++)c+=f(b);return c},g=bc.isXML=function(a){var b=a&&(a.ownerDocument||a).documentElement;return b?b.nodeName!=="HTML":!1},h=bc.contains=s.contains?function(a,b){var c=a.nodeType===9?a.documentElement:a,d=b&&b.parentNode;return a===d||!!(d&&d.nodeType===1&&c.contains&&c.contains(d))}:s.compareDocumentPosition?function(a,b){return b&&!!(a.compareDocumentPosition(b)&16)}:function(a,b){while(b=b.parentNode)if(b===a)return!0;return!1},bc.attr=function(a,b){var c,d=g(a);return d||(b=b.toLowerCase()),(c=e.attrHandle[b])?c(a):d||$?a.getAttribute(b):(c=a.getAttributeNode(b),c?typeof a[b]=="boolean"?a[b]?b:null:c.specified?c.value:null:null)},e=bc.selectors={cacheLength:50,createPseudo:z,match:W,attrHandle:Z?{}:{href:function(a){return a.getAttribute("href",2)},type:function(a){return a.getAttribute("type")}},find:{ID:d?function(a,b,c){if(typeof b.getElementById!==n&&!c){var d=b.getElementById(a);return d&&d.parentNode?[d]:[]}}:function(a,c,d){if(typeof c.getElementById!==n&&!d){var e=c.getElementById(a);return e?e.id===a||typeof e.getAttributeNode!==n&&e.getAttributeNode("id").value===a?[e]:b:[]}},TAG:Y?function(a,b){if(typeof b.getElementsByTagName!==n)return b.getElementsByTagName(a)}:function(a,b){var c=b.getElementsByTagName(a);if(a==="*"){var d,e=[],f=0;for(;d=c[f];f++)d.nodeType===1&&e.push(d);return e}return c},NAME:ba&&function(a,b){if(typeof b.getElementsByName!==n)return b.getElementsByName(name)},CLASS:_&&function(a,b,c){if(typeof b.getElementsByClassName!==n&&!c)return b.getElementsByClassName(a)}},relative:{">":{dir:"parentNode",first:!0}," ":{dir:"parentNode"},"+":{dir:"previousSibling",first:!0},"~":{dir:"previousSibling"}},preFilter:{ATTR:function(a){return a[1]=a[1].replace(V,""),a[3]=(a[4]||a[5]||"").replace(V,""),a[2]==="~="&&(a[3]=" "+a[3]+" "),a.slice(0,4)},CHILD:function(a){return a[1]=a[1].toLowerCase(),a[1]==="nth"?(a[2]||bc.error(a[0]),a[3]=+(a[3]?a[4]+(a[5]||1):2*(a[2]==="even"||a[2]==="odd")),a[4]=+(a[6]+a[7]||a[2]==="odd")):a[2]&&bc.error(a[0]),a},PSEUDO:function(a){var b,c;if(W.CHILD.test(a[0]))return null;if(a[3])a[2]=a[3];else if(b=a[4])O.test(b)&&(c=bh(b,!0))&&(c=b.indexOf(")",b.length-c)-b.length)&&(b=b.slice(0,c),a[0]=a[0].slice(0,c)),a[2]=b;return a.slice(0,3)}},filter:{ID:d?function(a){return a=a.replace(V,""),function(b){return b.getAttribute("id")===a}}:function(a){return a=a.replace(V,""),function(b){var c=typeof b.getAttributeNode!==n&&b.getAttributeNode("id");return c&&c.value===a}},TAG:function(a){return a==="*"?function(){return!0}:(a=a.replace(V,"").toLowerCase(),function(b){return b.nodeName&&b.nodeName.toLowerCase()===a})},CLASS:function(a){var b=B[o][a];return b||(b=B(a,new RegExp("(^|"+E+")"+a+"("+E+"|$)"))),function(a){return b.test(a.className||typeof a.getAttribute!==n&&a.getAttribute("class")||"")}},ATTR:function(a,b,c){return function(d,e){var f=bc.attr(d,a);return f==null?b==="!=":b?(f+="",b==="="?f===c:b==="!="?f!==c:b==="^="?c&&f.indexOf(c)===0:b==="*="?c&&f.indexOf(c)>-1:b==="$="?c&&f.substr(f.length-c.length)===c:b==="~="?(" "+f+" ").indexOf(c)>-1:b==="|="?f===c||f.substr(0,c.length+1)===c+"-":!1):!0}},CHILD:function(a,b,c,d){return a==="nth"?function(a){var b,e,f=a.parentNode;if(c===1&&d===0)return!0;if(f){e=0;for(b=f.firstChild;b;b=b.nextSibling)if(b.nodeType===1){e++;if(a===b)break}}return e-=d,e===c||e%c===0&&e/c>=0}:function(b){var c=b;switch(a){case"only":case"first":while(c=c.previousSibling)if(c.nodeType===1)return!1;if(a==="first")return!0;c=b;case"last":while(c=c.nextSibling)if(c.nodeType===1)return!1;return!0}}},PSEUDO:function(a,b){var c,d=e.pseudos[a]||e.setFilters[a.toLowerCase()]||bc.error("unsupported pseudo: "+a);return d[o]?d(b):d.length>1?(c=[a,a,"",b],e.setFilters.hasOwnProperty(a.toLowerCase())?z(function(a,c){var e,f=d(a,b),g=f.length;while(g--)e=y.call(a,f[g]),a[e]=!(c[e]=f[g])}):function(a){return d(a,0,c)}):d}},pseudos:{not:z(function(a){var b=[],c=[],d=i(a.replace(L,"$1"));return d[o]?z(function(a,b,c,e){var f,g=d(a,null,e,[]),h=a.length;while(h--)if(f=g[h])a[h]=!(b[h]=f)}):function(a,e,f){return b[0]=a,d(b,null,f,c),!c.pop()}}),has:z(function(a){return function(b){return bc(a,b).length>0}}),contains:z(function(a){return function(b){return(b.textContent||b.innerText||f(b)).indexOf(a)>-1}}),enabled:function(a){return a.disabled===!1},disabled:function(a){return a.disabled===!0},checked:function(a){var b=a.nodeName.toLowerCase();return b==="input"&&!!a.checked||b==="option"&&!!a.selected},selected:function(a){return a.parentNode&&a.parentNode.selectedIndex,a.selected===!0},parent:function(a){return!e.pseudos.empty(a)},empty:function(a){var b;a=a.firstChild;while(a){if(a.nodeName>"@"||(b=a.nodeType)===3||b===4)return!1;a=a.nextSibling}return!0},header:function(a){return T.test(a.nodeName)},text:function(a){var b,c;return a.nodeName.toLowerCase()==="input"&&(b=a.type)==="text"&&((c=a.getAttribute("type"))==null||c.toLowerCase()===b)},radio:bd("radio"),checkbox:bd("checkbox"),file:bd("file"),password:bd("password"),image:bd("image"),submit:be("submit"),reset:be("reset"),button:function(a){var b=a.nodeName.toLowerCase();return b==="input"&&a.type==="button"||b==="button"},input:function(a){return U.test(a.nodeName)},focus:function(a){var b=a.ownerDocument;return a===b.activeElement&&(!b.hasFocus||b.hasFocus())&&(!!a.type||!!a.href)},active:function(a){return a===a.ownerDocument.activeElement},first:bf(function(a,b,c){return[0]}),last:bf(function(a,b,c){return[b-1]}),eq:bf(function(a,b,c){return[c<0?c+b:c]}),even:bf(function(a,b,c){for(var d=0;d<b;d+=2)a.push(d);return a}),odd:bf(function(a,b,c){for(var d=1;d<b;d+=2)a.push(d);return a}),lt:bf(function(a,b,c){for(var d=c<0?c+b:c;--d>=0;)a.push(d);return a}),gt:bf(function(a,b,c){for(var d=c<0?c+b:c;++d<b;)a.push(d);return a})}},j=s.compareDocumentPosition?function(a,b){return a===b?(k=!0,0):(!a.compareDocumentPosition||!b.compareDocumentPosition?a.compareDocumentPosition:a.compareDocumentPosition(b)&4)?-1:1}:function(a,b){if(a===b)return k=!0,0;if(a.sourceIndex&&b.sourceIndex)return a.sourceIndex-b.sourceIndex;var c,d,e=[],f=[],g=a.parentNode,h=b.parentNode,i=g;if(g===h)return bg(a,b);if(!g)return-1;if(!h)return 1;while(i)e.unshift(i),i=i.parentNode;i=h;while(i)f.unshift(i),i=i.parentNode;c=e.length,d=f.length;for(var j=0;j<c&&j<d;j++)if(e[j]!==f[j])return bg(e[j],f[j]);return j===c?bg(a,f[j],-1):bg(e[j],b,1)},[0,0].sort(j),m=!k,bc.uniqueSort=function(a){var b,c=1;k=m,a.sort(j);if(k)for(;b=a[c];c++)b===a[c-1]&&a.splice(c--,1);return a},bc.error=function(a){throw new Error("Syntax error, unrecognized expression: "+a)},i=bc.compile=function(a,b){var c,d=[],e=[],f=D[o][a];if(!f){b||(b=bh(a)),c=b.length;while(c--)f=bm(b[c]),f[o]?d.push(f):e.push(f);f=D(a,bn(e,d))}return f},r.querySelectorAll&&function(){var a,b=bp,c=/'|\\/g,d=/\=[\x20\t\r\n\f]*([^'"\]]*)[\x20\t\r\n\f]*\]/g,e=[":focus"],f=[":active",":focus"],h=s.matchesSelector||s.mozMatchesSelector||s.webkitMatchesSelector||s.oMatchesSelector||s.msMatchesSelector;X(function(a){a.innerHTML="<select><option selected=''></option></select>",a.querySelectorAll("[selected]").length||e.push("\\["+E+"*(?:checked|disabled|ismap|multiple|readonly|selected|value)"),a.querySelectorAll(":checked").length||e.push(":checked")}),X(function(a){a.innerHTML="<p test=''></p>",a.querySelectorAll("[test^='']").length&&e.push("[*^$]="+E+"*(?:\"\"|'')"),a.innerHTML="<input type='hidden'/>",a.querySelectorAll(":enabled").length||e.push(":enabled",":disabled")}),e=new RegExp(e.join("|")),bp=function(a,d,f,g,h){if(!g&&!h&&(!e||!e.test(a))){var i,j,k=!0,l=o,m=d,n=d.nodeType===9&&a;if(d.nodeType===1&&d.nodeName.toLowerCase()!=="object"){i=bh(a),(k=d.getAttribute("id"))?l=k.replace(c,"\\$&"):d.setAttribute("id",l),l="[id='"+l+"'] ",j=i.length;while(j--)i[j]=l+i[j].join("");m=R.test(a)&&d.parentNode||d,n=i.join(",")}if(n)try{return w.apply(f,x.call(m.querySelectorAll(n),0)),f}catch(p){}finally{k||d.removeAttribute("id")}}return b(a,d,f,g,h)},h&&(X(function(b){a=h.call(b,"div");try{h.call(b,"[test!='']:sizzle"),f.push("!=",J)}catch(c){}}),f=new RegExp(f.join("|")),bc.matchesSelector=function(b,c){c=c.replace(d,"='$1']");if(!g(b)&&!f.test(c)&&(!e||!e.test(c)))try{var i=h.call(b,c);if(i||a||b.document&&b.document.nodeType!==11)return i}catch(j){}return bc(c,null,null,[b]).length>0})}(),e.pseudos.nth=e.pseudos.eq,e.filters=bq.prototype=e.pseudos,e.setFilters=new bq,bc.attr=p.attr,p.find=bc,p.expr=bc.selectors,p.expr[":"]=p.expr.pseudos,p.unique=bc.uniqueSort,p.text=bc.getText,p.isXMLDoc=bc.isXML,p.contains=bc.contains}(a);var bc=/Until$/,bd=/^(?:parents|prev(?:Until|All))/,be=/^.[^:#\[\.,]*$/,bf=p.expr.match.needsContext,bg={children:!0,contents:!0,next:!0,prev:!0};p.fn.extend({find:function(a){var b,c,d,e,f,g,h=this;if(typeof a!="string")return p(a).filter(function(){for(b=0,c=h.length;b<c;b++)if(p.contains(h[b],this))return!0});g=this.pushStack("","find",a);for(b=0,c=this.length;b<c;b++){d=g.length,p.find(a,this[b],g);if(b>0)for(e=d;e<g.length;e++)for(f=0;f<d;f++)if(g[f]===g[e]){g.splice(e--,1);break}}return g},has:function(a){var b,c=p(a,this),d=c.length;return this.filter(function(){for(b=0;b<d;b++)if(p.contains(this,c[b]))return!0})},not:function(a){return this.pushStack(bj(this,a,!1),"not",a)},filter:function(a){return this.pushStack(bj(this,a,!0),"filter",a)},is:function(a){return!!a&&(typeof a=="string"?bf.test(a)?p(a,this.context).index(this[0])>=0:p.filter(a,this).length>0:this.filter(a).length>0)},closest:function(a,b){var c,d=0,e=this.length,f=[],g=bf.test(a)||typeof a!="string"?p(a,b||this.context):0;for(;d<e;d++){c=this[d];while(c&&c.ownerDocument&&c!==b&&c.nodeType!==11){if(g?g.index(c)>-1:p.find.matchesSelector(c,a)){f.push(c);break}c=c.parentNode}}return f=f.length>1?p.unique(f):f,this.pushStack(f,"closest",a)},index:function(a){return a?typeof a=="string"?p.inArray(this[0],p(a)):p.inArray(a.jquery?a[0]:a,this):this[0]&&this[0].parentNode?this.prevAll().length:-1},add:function(a,b){var c=typeof a=="string"?p(a,b):p.makeArray(a&&a.nodeType?[a]:a),d=p.merge(this.get(),c);return this.pushStack(bh(c[0])||bh(d[0])?d:p.unique(d))},addBack:function(a){return this.add(a==null?this.prevObject:this.prevObject.filter(a))}}),p.fn.andSelf=p.fn.addBack,p.each({parent:function(a){var b=a.parentNode;return b&&b.nodeType!==11?b:null},parents:function(a){return p.dir(a,"parentNode")},parentsUntil:function(a,b,c){return p.dir(a,"parentNode",c)},next:function(a){return bi(a,"nextSibling")},prev:function(a){return bi(a,"previousSibling")},nextAll:function(a){return p.dir(a,"nextSibling")},prevAll:function(a){return p.dir(a,"previousSibling")},nextUntil:function(a,b,c){return p.dir(a,"nextSibling",c)},prevUntil:function(a,b,c){return p.dir(a,"previousSibling",c)},siblings:function(a){return p.sibling((a.parentNode||{}).firstChild,a)},children:function(a){return p.sibling(a.firstChild)},contents:function(a){return p.nodeName(a,"iframe")?a.contentDocument||a.contentWindow.document:p.merge([],a.childNodes)}},function(a,b){p.fn[a]=function(c,d){var e=p.map(this,b,c);return bc.test(a)||(d=c),d&&typeof d=="string"&&(e=p.filter(d,e)),e=this.length>1&&!bg[a]?p.unique(e):e,this.length>1&&bd.test(a)&&(e=e.reverse()),this.pushStack(e,a,k.call(arguments).join(","))}}),p.extend({filter:function(a,b,c){return c&&(a=":not("+a+")"),b.length===1?p.find.matchesSelector(b[0],a)?[b[0]]:[]:p.find.matches(a,b)},dir:function(a,c,d){var e=[],f=a[c];while(f&&f.nodeType!==9&&(d===b||f.nodeType!==1||!p(f).is(d)))f.nodeType===1&&e.push(f),f=f[c];return e},sibling:function(a,b){var c=[];for(;a;a=a.nextSibling)a.nodeType===1&&a!==b&&c.push(a);return c}});var bl="abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",bm=/ jQuery\d+="(?:null|\d+)"/g,bn=/^\s+/,bo=/<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,bp=/<([\w:]+)/,bq=/<tbody/i,br=/<|&#?\w+;/,bs=/<(?:script|style|link)/i,bt=/<(?:script|object|embed|option|style)/i,bu=new RegExp("<(?:"+bl+")[\\s/>]","i"),bv=/^(?:checkbox|radio)$/,bw=/checked\s*(?:[^=]|=\s*.checked.)/i,bx=/\/(java|ecma)script/i,by=/^\s*<!(?:\[CDATA\[|\-\-)|[\]\-]{2}>\s*$/g,bz={option:[1,"<select multiple='multiple'>","</select>"],legend:[1,"<fieldset>","</fieldset>"],thead:[1,"<table>","</table>"],tr:[2,"<table><tbody>","</tbody></table>"],td:[3,"<table><tbody><tr>","</tr></tbody></table>"],col:[2,"<table><tbody></tbody><colgroup>","</colgroup></table>"],area:[1,"<map>","</map>"],_default:[0,"",""]},bA=bk(e),bB=bA.appendChild(e.createElement("div"));bz.optgroup=bz.option,bz.tbody=bz.tfoot=bz.colgroup=bz.caption=bz.thead,bz.th=bz.td,p.support.htmlSerialize||(bz._default=[1,"X<div>","</div>"]),p.fn.extend({text:function(a){return p.access(this,function(a){return a===b?p.text(this):this.empty().append((this[0]&&this[0].ownerDocument||e).createTextNode(a))},null,a,arguments.length)},wrapAll:function(a){if(p.isFunction(a))return this.each(function(b){p(this).wrapAll(a.call(this,b))});if(this[0]){var b=p(a,this[0].ownerDocument).eq(0).clone(!0);this[0].parentNode&&b.insertBefore(this[0]),b.map(function(){var a=this;while(a.firstChild&&a.firstChild.nodeType===1)a=a.firstChild;return a}).append(this)}return this},wrapInner:function(a){return p.isFunction(a)?this.each(function(b){p(this).wrapInner(a.call(this,b))}):this.each(function(){var b=p(this),c=b.contents();c.length?c.wrapAll(a):b.append(a)})},wrap:function(a){var b=p.isFunction(a);return this.each(function(c){p(this).wrapAll(b?a.call(this,c):a)})},unwrap:function(){return this.parent().each(function(){p.nodeName(this,"body")||p(this).replaceWith(this.childNodes)}).end()},append:function(){return this.domManip(arguments,!0,function(a){(this.nodeType===1||this.nodeType===11)&&this.appendChild(a)})},prepend:function(){return this.domManip(arguments,!0,function(a){(this.nodeType===1||this.nodeType===11)&&this.insertBefore(a,this.firstChild)})},before:function(){if(!bh(this[0]))return this.domManip(arguments,!1,function(a){this.parentNode.insertBefore(a,this)});if(arguments.length){var a=p.clean(arguments);return this.pushStack(p.merge(a,this),"before",this.selector)}},after:function(){if(!bh(this[0]))return this.domManip(arguments,!1,function(a){this.parentNode.insertBefore(a,this.nextSibling)});if(arguments.length){var a=p.clean(arguments);return this.pushStack(p.merge(this,a),"after",this.selector)}},remove:function(a,b){var c,d=0;for(;(c=this[d])!=null;d++)if(!a||p.filter(a,[c]).length)!b&&c.nodeType===1&&(p.cleanData(c.getElementsByTagName("*")),p.cleanData([c])),c.parentNode&&c.parentNode.removeChild(c);return this},empty:function(){var a,b=0;for(;(a=this[b])!=null;b++){a.nodeType===1&&p.cleanData(a.getElementsByTagName("*"));while(a.firstChild)a.removeChild(a.firstChild)}return this},clone:function(a,b){return a=a==null?!1:a,b=b==null?a:b,this.map(function(){return p.clone(this,a,b)})},html:function(a){return p.access(this,function(a){var c=this[0]||{},d=0,e=this.length;if(a===b)return c.nodeType===1?c.innerHTML.replace(bm,""):b;if(typeof a=="string"&&!bs.test(a)&&(p.support.htmlSerialize||!bu.test(a))&&(p.support.leadingWhitespace||!bn.test(a))&&!bz[(bp.exec(a)||["",""])[1].toLowerCase()]){a=a.replace(bo,"<$1></$2>");try{for(;d<e;d++)c=this[d]||{},c.nodeType===1&&(p.cleanData(c.getElementsByTagName("*")),c.innerHTML=a);c=0}catch(f){}}c&&this.empty().append(a)},null,a,arguments.length)},replaceWith:function(a){return bh(this[0])?this.length?this.pushStack(p(p.isFunction(a)?a():a),"replaceWith",a):this:p.isFunction(a)?this.each(function(b){var c=p(this),d=c.html();c.replaceWith(a.call(this,b,d))}):(typeof a!="string"&&(a=p(a).detach()),this.each(function(){var b=this.nextSibling,c=this.parentNode;p(this).remove(),b?p(b).before(a):p(c).append(a)}))},detach:function(a){return this.remove(a,!0)},domManip:function(a,c,d){a=[].concat.apply([],a);var e,f,g,h,i=0,j=a[0],k=[],l=this.length;if(!p.support.checkClone&&l>1&&typeof j=="string"&&bw.test(j))return this.each(function(){p(this).domManip(a,c,d)});if(p.isFunction(j))return this.each(function(e){var f=p(this);a[0]=j.call(this,e,c?f.html():b),f.domManip(a,c,d)});if(this[0]){e=p.buildFragment(a,this,k),g=e.fragment,f=g.firstChild,g.childNodes.length===1&&(g=f);if(f){c=c&&p.nodeName(f,"tr");for(h=e.cacheable||l-1;i<l;i++)d.call(c&&p.nodeName(this[i],"table")?bC(this[i],"tbody"):this[i],i===h?g:p.clone(g,!0,!0))}g=f=null,k.length&&p.each(k,function(a,b){b.src?p.ajax?p.ajax({url:b.src,type:"GET",dataType:"script",async:!1,global:!1,"throws":!0}):p.error("no ajax"):p.globalEval((b.text||b.textContent||b.innerHTML||"").replace(by,"")),b.parentNode&&b.parentNode.removeChild(b)})}return this}}),p.buildFragment=function(a,c,d){var f,g,h,i=a[0];return c=c||e,c=!c.nodeType&&c[0]||c,c=c.ownerDocument||c,a.length===1&&typeof i=="string"&&i.length<512&&c===e&&i.charAt(0)==="<"&&!bt.test(i)&&(p.support.checkClone||!bw.test(i))&&(p.support.html5Clone||!bu.test(i))&&(g=!0,f=p.fragments[i],h=f!==b),f||(f=c.createDocumentFragment(),p.clean(a,c,f,d),g&&(p.fragments[i]=h&&f)),{fragment:f,cacheable:g}},p.fragments={},p.each({appendTo:"append",prependTo:"prepend",insertBefore:"before",insertAfter:"after",replaceAll:"replaceWith"},function(a,b){p.fn[a]=function(c){var d,e=0,f=[],g=p(c),h=g.length,i=this.length===1&&this[0].parentNode;if((i==null||i&&i.nodeType===11&&i.childNodes.length===1)&&h===1)return g[b](this[0]),this;for(;e<h;e++)d=(e>0?this.clone(!0):this).get(),p(g[e])[b](d),f=f.concat(d);return this.pushStack(f,a,g.selector)}}),p.extend({clone:function(a,b,c){var d,e,f,g;p.support.html5Clone||p.isXMLDoc(a)||!bu.test("<"+a.nodeName+">")?g=a.cloneNode(!0):(bB.innerHTML=a.outerHTML,bB.removeChild(g=bB.firstChild));if((!p.support.noCloneEvent||!p.support.noCloneChecked)&&(a.nodeType===1||a.nodeType===11)&&!p.isXMLDoc(a)){bE(a,g),d=bF(a),e=bF(g);for(f=0;d[f];++f)e[f]&&bE(d[f],e[f])}if(b){bD(a,g);if(c){d=bF(a),e=bF(g);for(f=0;d[f];++f)bD(d[f],e[f])}}return d=e=null,g},clean:function(a,b,c,d){var f,g,h,i,j,k,l,m,n,o,q,r,s=b===e&&bA,t=[];if(!b||typeof b.createDocumentFragment=="undefined")b=e;for(f=0;(h=a[f])!=null;f++){typeof h=="number"&&(h+="");if(!h)continue;if(typeof h=="string")if(!br.test(h))h=b.createTextNode(h);else{s=s||bk(b),l=b.createElement("div"),s.appendChild(l),h=h.replace(bo,"<$1></$2>"),i=(bp.exec(h)||["",""])[1].toLowerCase(),j=bz[i]||bz._default,k=j[0],l.innerHTML=j[1]+h+j[2];while(k--)l=l.lastChild;if(!p.support.tbody){m=bq.test(h),n=i==="table"&&!m?l.firstChild&&l.firstChild.childNodes:j[1]==="<table>"&&!m?l.childNodes:[];for(g=n.length-1;g>=0;--g)p.nodeName(n[g],"tbody")&&!n[g].childNodes.length&&n[g].parentNode.removeChild(n[g])}!p.support.leadingWhitespace&&bn.test(h)&&l.insertBefore(b.createTextNode(bn.exec(h)[0]),l.firstChild),h=l.childNodes,l.parentNode.removeChild(l)}h.nodeType?t.push(h):p.merge(t,h)}l&&(h=l=s=null);if(!p.support.appendChecked)for(f=0;(h=t[f])!=null;f++)p.nodeName(h,"input")?bG(h):typeof h.getElementsByTagName!="undefined"&&p.grep(h.getElementsByTagName("input"),bG);if(c){q=function(a){if(!a.type||bx.test(a.type))return d?d.push(a.parentNode?a.parentNode.removeChild(a):a):c.appendChild(a)};for(f=0;(h=t[f])!=null;f++)if(!p.nodeName(h,"script")||!q(h))c.appendChild(h),typeof h.getElementsByTagName!="undefined"&&(r=p.grep(p.merge([],h.getElementsByTagName("script")),q),t.splice.apply(t,[f+1,0].concat(r)),f+=r.length)}return t},cleanData:function(a,b){var c,d,e,f,g=0,h=p.expando,i=p.cache,j=p.support.deleteExpando,k=p.event.special;for(;(e=a[g])!=null;g++)if(b||p.acceptData(e)){d=e[h],c=d&&i[d];if(c){if(c.events)for(f in c.events)k[f]?p.event.remove(e,f):p.removeEvent(e,f,c.handle);i[d]&&(delete i[d],j?delete e[h]:e.removeAttribute?e.removeAttribute(h):e[h]=null,p.deletedIds.push(d))}}}}),function(){var a,b;p.uaMatch=function(a){a=a.toLowerCase();var b=/(chrome)[ \/]([\w.]+)/.exec(a)||/(webkit)[ \/]([\w.]+)/.exec(a)||/(opera)(?:.*version|)[ \/]([\w.]+)/.exec(a)||/(msie) ([\w.]+)/.exec(a)||a.indexOf("compatible")<0&&/(mozilla)(?:.*? rv:([\w.]+)|)/.exec(a)||[];return{browser:b[1]||"",version:b[2]||"0"}},a=p.uaMatch(g.userAgent),b={},a.browser&&(b[a.browser]=!0,b.version=a.version),b.chrome?b.webkit=!0:b.webkit&&(b.safari=!0),p.browser=b,p.sub=function(){function a(b,c){return new a.fn.init(b,c)}p.extend(!0,a,this),a.superclass=this,a.fn=a.prototype=this(),a.fn.constructor=a,a.sub=this.sub,a.fn.init=function c(c,d){return d&&d instanceof p&&!(d instanceof a)&&(d=a(d)),p.fn.init.call(this,c,d,b)},a.fn.init.prototype=a.fn;var b=a(e);return a}}();var bH,bI,bJ,bK=/alpha\([^)]*\)/i,bL=/opacity=([^)]*)/,bM=/^(top|right|bottom|left)$/,bN=/^(none|table(?!-c[ea]).+)/,bO=/^margin/,bP=new RegExp("^("+q+")(.*)$","i"),bQ=new RegExp("^("+q+")(?!px)[a-z%]+$","i"),bR=new RegExp("^([-+])=("+q+")","i"),bS={},bT={position:"absolute",visibility:"hidden",display:"block"},bU={letterSpacing:0,fontWeight:400},bV=["Top","Right","Bottom","Left"],bW=["Webkit","O","Moz","ms"],bX=p.fn.toggle;p.fn.extend({css:function(a,c){return p.access(this,function(a,c,d){return d!==b?p.style(a,c,d):p.css(a,c)},a,c,arguments.length>1)},show:function(){return b$(this,!0)},hide:function(){return b$(this)},toggle:function(a,b){var c=typeof a=="boolean";return p.isFunction(a)&&p.isFunction(b)?bX.apply(this,arguments):this.each(function(){(c?a:bZ(this))?p(this).show():p(this).hide()})}}),p.extend({cssHooks:{opacity:{get:function(a,b){if(b){var c=bH(a,"opacity");return c===""?"1":c}}}},cssNumber:{fillOpacity:!0,fontWeight:!0,lineHeight:!0,opacity:!0,orphans:!0,widows:!0,zIndex:!0,zoom:!0},cssProps:{"float":p.support.cssFloat?"cssFloat":"styleFloat"},style:function(a,c,d,e){if(!a||a.nodeType===3||a.nodeType===8||!a.style)return;var f,g,h,i=p.camelCase(c),j=a.style;c=p.cssProps[i]||(p.cssProps[i]=bY(j,i)),h=p.cssHooks[c]||p.cssHooks[i];if(d===b)return h&&"get"in h&&(f=h.get(a,!1,e))!==b?f:j[c];g=typeof d,g==="string"&&(f=bR.exec(d))&&(d=(f[1]+1)*f[2]+parseFloat(p.css(a,c)),g="number");if(d==null||g==="number"&&isNaN(d))return;g==="number"&&!p.cssNumber[i]&&(d+="px");if(!h||!("set"in h)||(d=h.set(a,d,e))!==b)try{j[c]=d}catch(k){}},css:function(a,c,d,e){var f,g,h,i=p.camelCase(c);return c=p.cssProps[i]||(p.cssProps[i]=bY(a.style,i)),h=p.cssHooks[c]||p.cssHooks[i],h&&"get"in h&&(f=h.get(a,!0,e)),f===b&&(f=bH(a,c)),f==="normal"&&c in bU&&(f=bU[c]),d||e!==b?(g=parseFloat(f),d||p.isNumeric(g)?g||0:f):f},swap:function(a,b,c){var d,e,f={};for(e in b)f[e]=a.style[e],a.style[e]=b[e];d=c.call(a);for(e in b)a.style[e]=f[e];return d}}),a.getComputedStyle?bH=function(b,c){var d,e,f,g,h=a.getComputedStyle(b,null),i=b.style;return h&&(d=h[c],d===""&&!p.contains(b.ownerDocument,b)&&(d=p.style(b,c)),bQ.test(d)&&bO.test(c)&&(e=i.width,f=i.minWidth,g=i.maxWidth,i.minWidth=i.maxWidth=i.width=d,d=h.width,i.width=e,i.minWidth=f,i.maxWidth=g)),d}:e.documentElement.currentStyle&&(bH=function(a,b){var c,d,e=a.currentStyle&&a.currentStyle[b],f=a.style;return e==null&&f&&f[b]&&(e=f[b]),bQ.test(e)&&!bM.test(b)&&(c=f.left,d=a.runtimeStyle&&a.runtimeStyle.left,d&&(a.runtimeStyle.left=a.currentStyle.left),f.left=b==="fontSize"?"1em":e,e=f.pixelLeft+"px",f.left=c,d&&(a.runtimeStyle.left=d)),e===""?"auto":e}),p.each(["height","width"],function(a,b){p.cssHooks[b]={get:function(a,c,d){if(c)return a.offsetWidth===0&&bN.test(bH(a,"display"))?p.swap(a,bT,function(){return cb(a,b,d)}):cb(a,b,d)},set:function(a,c,d){return b_(a,c,d?ca(a,b,d,p.support.boxSizing&&p.css(a,"boxSizing")==="border-box"):0)}}}),p.support.opacity||(p.cssHooks.opacity={get:function(a,b){return bL.test((b&&a.currentStyle?a.currentStyle.filter:a.style.filter)||"")?.01*parseFloat(RegExp.$1)+"":b?"1":""},set:function(a,b){var c=a.style,d=a.currentStyle,e=p.isNumeric(b)?"alpha(opacity="+b*100+")":"",f=d&&d.filter||c.filter||"";c.zoom=1;if(b>=1&&p.trim(f.replace(bK,""))===""&&c.removeAttribute){c.removeAttribute("filter");if(d&&!d.filter)return}c.filter=bK.test(f)?f.replace(bK,e):f+" "+e}}),p(function(){p.support.reliableMarginRight||(p.cssHooks.marginRight={get:function(a,b){return p.swap(a,{display:"inline-block"},function(){if(b)return bH(a,"marginRight")})}}),!p.support.pixelPosition&&p.fn.position&&p.each(["top","left"],function(a,b){p.cssHooks[b]={get:function(a,c){if(c){var d=bH(a,b);return bQ.test(d)?p(a).position()[b]+"px":d}}}})}),p.expr&&p.expr.filters&&(p.expr.filters.hidden=function(a){return a.offsetWidth===0&&a.offsetHeight===0||!p.support.reliableHiddenOffsets&&(a.style&&a.style.display||bH(a,"display"))==="none"},p.expr.filters.visible=function(a){return!p.expr.filters.hidden(a)}),p.each({margin:"",padding:"",border:"Width"},function(a,b){p.cssHooks[a+b]={expand:function(c){var d,e=typeof c=="string"?c.split(" "):[c],f={};for(d=0;d<4;d++)f[a+bV[d]+b]=e[d]||e[d-2]||e[0];return f}},bO.test(a)||(p.cssHooks[a+b].set=b_)});var cd=/%20/g,ce=/\[\]$/,cf=/\r?\n/g,cg=/^(?:color|date|datetime|datetime-local|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,ch=/^(?:select|textarea)/i;p.fn.extend({serialize:function(){return p.param(this.serializeArray())},serializeArray:function(){return this.map(function(){return this.elements?p.makeArray(this.elements):this}).filter(function(){return this.name&&!this.disabled&&(this.checked||ch.test(this.nodeName)||cg.test(this.type))}).map(function(a,b){var c=p(this).val();return c==null?null:p.isArray(c)?p.map(c,function(a,c){return{name:b.name,value:a.replace(cf,"\r\n")}}):{name:b.name,value:c.replace(cf,"\r\n")}}).get()}}),p.param=function(a,c){var d,e=[],f=function(a,b){b=p.isFunction(b)?b():b==null?"":b,e[e.length]=encodeURIComponent(a)+"="+encodeURIComponent(b)};c===b&&(c=p.ajaxSettings&&p.ajaxSettings.traditional);if(p.isArray(a)||a.jquery&&!p.isPlainObject(a))p.each(a,function(){f(this.name,this.value)});else for(d in a)ci(d,a[d],c,f);return e.join("&").replace(cd,"+")};var cj,ck,cl=/#.*$/,cm=/^(.*?):[ \t]*([^\r\n]*)\r?$/mg,cn=/^(?:about|app|app\-storage|.+\-extension|file|res|widget):$/,co=/^(?:GET|HEAD)$/,cp=/^\/\//,cq=/\?/,cr=/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,cs=/([?&])_=[^&]*/,ct=/^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+)|)|)/,cu=p.fn.load,cv={},cw={},cx=["*/"]+["*"];try{ck=f.href}catch(cy){ck=e.createElement("a"),ck.href="",ck=ck.href}cj=ct.exec(ck.toLowerCase())||[],p.fn.load=function(a,c,d){if(typeof a!="string"&&cu)return cu.apply(this,arguments);if(!this.length)return this;var e,f,g,h=this,i=a.indexOf(" ");return i>=0&&(e=a.slice(i,a.length),a=a.slice(0,i)),p.isFunction(c)?(d=c,c=b):c&&typeof c=="object"&&(f="POST"),p.ajax({url:a,type:f,dataType:"html",data:c,complete:function(a,b){d&&h.each(d,g||[a.responseText,b,a])}}).done(function(a){g=arguments,h.html(e?p("<div>").append(a.replace(cr,"")).find(e):a)}),this},p.each("ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "),function(a,b){p.fn[b]=function(a){return this.on(b,a)}}),p.each(["get","post"],function(a,c){p[c]=function(a,d,e,f){return p.isFunction(d)&&(f=f||e,e=d,d=b),p.ajax({type:c,url:a,data:d,success:e,dataType:f})}}),p.extend({getScript:function(a,c){return p.get(a,b,c,"script")},getJSON:function(a,b,c){return p.get(a,b,c,"json")},ajaxSetup:function(a,b){return b?cB(a,p.ajaxSettings):(b=a,a=p.ajaxSettings),cB(a,b),a},ajaxSettings:{url:ck,isLocal:cn.test(cj[1]),global:!0,type:"GET",contentType:"application/x-www-form-urlencoded; charset=UTF-8",processData:!0,async:!0,accepts:{xml:"application/xml, text/xml",html:"text/html",text:"text/plain",json:"application/json, text/javascript","*":cx},contents:{xml:/xml/,html:/html/,json:/json/},responseFields:{xml:"responseXML",text:"responseText"},converters:{"* text":a.String,"text html":!0,"text json":p.parseJSON,"text xml":p.parseXML},flatOptions:{context:!0,url:!0}},ajaxPrefilter:cz(cv),ajaxTransport:cz(cw),ajax:function(a,c){function y(a,c,f,i){var k,s,t,u,w,y=c;if(v===2)return;v=2,h&&clearTimeout(h),g=b,e=i||"",x.readyState=a>0?4:0,f&&(u=cC(l,x,f));if(a>=200&&a<300||a===304)l.ifModified&&(w=x.getResponseHeader("Last-Modified"),w&&(p.lastModified[d]=w),w=x.getResponseHeader("Etag"),w&&(p.etag[d]=w)),a===304?(y="notmodified",k=!0):(k=cD(l,u),y=k.state,s=k.data,t=k.error,k=!t);else{t=y;if(!y||a)y="error",a<0&&(a=0)}x.status=a,x.statusText=(c||y)+"",k?o.resolveWith(m,[s,y,x]):o.rejectWith(m,[x,y,t]),x.statusCode(r),r=b,j&&n.trigger("ajax"+(k?"Success":"Error"),[x,l,k?s:t]),q.fireWith(m,[x,y]),j&&(n.trigger("ajaxComplete",[x,l]),--p.active||p.event.trigger("ajaxStop"))}typeof a=="object"&&(c=a,a=b),c=c||{};var d,e,f,g,h,i,j,k,l=p.ajaxSetup({},c),m=l.context||l,n=m!==l&&(m.nodeType||m instanceof p)?p(m):p.event,o=p.Deferred(),q=p.Callbacks("once memory"),r=l.statusCode||{},t={},u={},v=0,w="canceled",x={readyState:0,setRequestHeader:function(a,b){if(!v){var c=a.toLowerCase();a=u[c]=u[c]||a,t[a]=b}return this},getAllResponseHeaders:function(){return v===2?e:null},getResponseHeader:function(a){var c;if(v===2){if(!f){f={};while(c=cm.exec(e))f[c[1].toLowerCase()]=c[2]}c=f[a.toLowerCase()]}return c===b?null:c},overrideMimeType:function(a){return v||(l.mimeType=a),this},abort:function(a){return a=a||w,g&&g.abort(a),y(0,a),this}};o.promise(x),x.success=x.done,x.error=x.fail,x.complete=q.add,x.statusCode=function(a){if(a){var b;if(v<2)for(b in a)r[b]=[r[b],a[b]];else b=a[x.status],x.always(b)}return this},l.url=((a||l.url)+"").replace(cl,"").replace(cp,cj[1]+"//"),l.dataTypes=p.trim(l.dataType||"*").toLowerCase().split(s),l.crossDomain==null&&(i=ct.exec(l.url.toLowerCase())||!1,l.crossDomain=i&&i.join(":")+(i[3]?"":i[1]==="http:"?80:443)!==cj.join(":")+(cj[3]?"":cj[1]==="http:"?80:443)),l.data&&l.processData&&typeof l.data!="string"&&(l.data=p.param(l.data,l.traditional)),cA(cv,l,c,x);if(v===2)return x;j=l.global,l.type=l.type.toUpperCase(),l.hasContent=!co.test(l.type),j&&p.active++===0&&p.event.trigger("ajaxStart");if(!l.hasContent){l.data&&(l.url+=(cq.test(l.url)?"&":"?")+l.data,delete l.data),d=l.url;if(l.cache===!1){var z=p.now(),A=l.url.replace(cs,"$1_="+z);l.url=A+(A===l.url?(cq.test(l.url)?"&":"?")+"_="+z:"")}}(l.data&&l.hasContent&&l.contentType!==!1||c.contentType)&&x.setRequestHeader("Content-Type",l.contentType),l.ifModified&&(d=d||l.url,p.lastModified[d]&&x.setRequestHeader("If-Modified-Since",p.lastModified[d]),p.etag[d]&&x.setRequestHeader("If-None-Match",p.etag[d])),x.setRequestHeader("Accept",l.dataTypes[0]&&l.accepts[l.dataTypes[0]]?l.accepts[l.dataTypes[0]]+(l.dataTypes[0]!=="*"?", "+cx+"; q=0.01":""):l.accepts["*"]);for(k in l.headers)x.setRequestHeader(k,l.headers[k]);if(!l.beforeSend||l.beforeSend.call(m,x,l)!==!1&&v!==2){w="abort";for(k in{success:1,error:1,complete:1})x[k](l[k]);g=cA(cw,l,c,x);if(!g)y(-1,"No Transport");else{x.readyState=1,j&&n.trigger("ajaxSend",[x,l]),l.async&&l.timeout>0&&(h=setTimeout(function(){x.abort("timeout")},l.timeout));try{v=1,g.send(t,y)}catch(B){if(v<2)y(-1,B);else throw B}}return x}return x.abort()},active:0,lastModified:{},etag:{}});var cE=[],cF=/\?/,cG=/(=)\?(?=&|$)|\?\?/,cH=p.now();p.ajaxSetup({jsonp:"callback",jsonpCallback:function(){var a=cE.pop()||p.expando+"_"+cH++;return this[a]=!0,a}}),p.ajaxPrefilter("json jsonp",function(c,d,e){var f,g,h,i=c.data,j=c.url,k=c.jsonp!==!1,l=k&&cG.test(j),m=k&&!l&&typeof i=="string"&&!(c.contentType||"").indexOf("application/x-www-form-urlencoded")&&cG.test(i);if(c.dataTypes[0]==="jsonp"||l||m)return f=c.jsonpCallback=p.isFunction(c.jsonpCallback)?c.jsonpCallback():c.jsonpCallback,g=a[f],l?c.url=j.replace(cG,"$1"+f):m?c.data=i.replace(cG,"$1"+f):k&&(c.url+=(cF.test(j)?"&":"?")+c.jsonp+"="+f),c.converters["script json"]=function(){return h||p.error(f+" was not called"),h[0]},c.dataTypes[0]="json",a[f]=function(){h=arguments},e.always(function(){a[f]=g,c[f]&&(c.jsonpCallback=d.jsonpCallback,cE.push(f)),h&&p.isFunction(g)&&g(h[0]),h=g=b}),"script"}),p.ajaxSetup({accepts:{script:"text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"},contents:{script:/javascript|ecmascript/},converters:{"text script":function(a){return p.globalEval(a),a}}}),p.ajaxPrefilter("script",function(a){a.cache===b&&(a.cache=!1),a.crossDomain&&(a.type="GET",a.global=!1)}),p.ajaxTransport("script",function(a){if(a.crossDomain){var c,d=e.head||e.getElementsByTagName("head")[0]||e.documentElement;return{send:function(f,g){c=e.createElement("script"),c.async="async",a.scriptCharset&&(c.charset=a.scriptCharset),c.src=a.url,c.onload=c.onreadystatechange=function(a,e){if(e||!c.readyState||/loaded|complete/.test(c.readyState))c.onload=c.onreadystatechange=null,d&&c.parentNode&&d.removeChild(c),c=b,e||g(200,"success")},d.insertBefore(c,d.firstChild)},abort:function(){c&&c.onload(0,1)}}}});var cI,cJ=a.ActiveXObject?function(){for(var a in cI)cI[a](0,1)}:!1,cK=0;p.ajaxSettings.xhr=a.ActiveXObject?function(){return!this.isLocal&&cL()||cM()}:cL,function(a){p.extend(p.support,{ajax:!!a,cors:!!a&&"withCredentials"in a})}(p.ajaxSettings.xhr()),p.support.ajax&&p.ajaxTransport(function(c){if(!c.crossDomain||p.support.cors){var d;return{send:function(e,f){var g,h,i=c.xhr();c.username?i.open(c.type,c.url,c.async,c.username,c.password):i.open(c.type,c.url,c.async);if(c.xhrFields)for(h in c.xhrFields)i[h]=c.xhrFields[h];c.mimeType&&i.overrideMimeType&&i.overrideMimeType(c.mimeType),!c.crossDomain&&!e["X-Requested-With"]&&(e["X-Requested-With"]="XMLHttpRequest");try{for(h in e)i.setRequestHeader(h,e[h])}catch(j){}i.send(c.hasContent&&c.data||null),d=function(a,e){var h,j,k,l,m;try{if(d&&(e||i.readyState===4)){d=b,g&&(i.onreadystatechange=p.noop,cJ&&delete cI[g]);if(e)i.readyState!==4&&i.abort();else{h=i.status,k=i.getAllResponseHeaders(),l={},m=i.responseXML,m&&m.documentElement&&(l.xml=m);try{l.text=i.responseText}catch(a){}try{j=i.statusText}catch(n){j=""}!h&&c.isLocal&&!c.crossDomain?h=l.text?200:404:h===1223&&(h=204)}}}catch(o){e||f(-1,o)}l&&f(h,j,l,k)},c.async?i.readyState===4?setTimeout(d,0):(g=++cK,cJ&&(cI||(cI={},p(a).unload(cJ)),cI[g]=d),i.onreadystatechange=d):d()},abort:function(){d&&d(0,1)}}}});var cN,cO,cP=/^(?:toggle|show|hide)$/,cQ=new RegExp("^(?:([-+])=|)("+q+")([a-z%]*)$","i"),cR=/queueHooks$/,cS=[cY],cT={"*":[function(a,b){var c,d,e=this.createTween(a,b),f=cQ.exec(b),g=e.cur(),h=+g||0,i=1,j=20;if(f){c=+f[2],d=f[3]||(p.cssNumber[a]?"":"px");if(d!=="px"&&h){h=p.css(e.elem,a,!0)||c||1;do i=i||".5",h=h/i,p.style(e.elem,a,h+d);while(i!==(i=e.cur()/g)&&i!==1&&--j)}e.unit=d,e.start=h,e.end=f[1]?h+(f[1]+1)*c:c}return e}]};p.Animation=p.extend(cW,{tweener:function(a,b){p.isFunction(a)?(b=a,a=["*"]):a=a.split(" ");var c,d=0,e=a.length;for(;d<e;d++)c=a[d],cT[c]=cT[c]||[],cT[c].unshift(b)},prefilter:function(a,b){b?cS.unshift(a):cS.push(a)}}),p.Tween=cZ,cZ.prototype={constructor:cZ,init:function(a,b,c,d,e,f){this.elem=a,this.prop=c,this.easing=e||"swing",this.options=b,this.start=this.now=this.cur(),this.end=d,this.unit=f||(p.cssNumber[c]?"":"px")},cur:function(){var a=cZ.propHooks[this.prop];return a&&a.get?a.get(this):cZ.propHooks._default.get(this)},run:function(a){var b,c=cZ.propHooks[this.prop];return this.options.duration?this.pos=b=p.easing[this.easing](a,this.options.duration*a,0,1,this.options.duration):this.pos=b=a,this.now=(this.end-this.start)*b+this.start,this.options.step&&this.options.step.call(this.elem,this.now,this),c&&c.set?c.set(this):cZ.propHooks._default.set(this),this}},cZ.prototype.init.prototype=cZ.prototype,cZ.propHooks={_default:{get:function(a){var b;return a.elem[a.prop]==null||!!a.elem.style&&a.elem.style[a.prop]!=null?(b=p.css(a.elem,a.prop,!1,""),!b||b==="auto"?0:b):a.elem[a.prop]},set:function(a){p.fx.step[a.prop]?p.fx.step[a.prop](a):a.elem.style&&(a.elem.style[p.cssProps[a.prop]]!=null||p.cssHooks[a.prop])?p.style(a.elem,a.prop,a.now+a.unit):a.elem[a.prop]=a.now}}},cZ.propHooks.scrollTop=cZ.propHooks.scrollLeft={set:function(a){a.elem.nodeType&&a.elem.parentNode&&(a.elem[a.prop]=a.now)}},p.each(["toggle","show","hide"],function(a,b){var c=p.fn[b];p.fn[b]=function(d,e,f){return d==null||typeof d=="boolean"||!a&&p.isFunction(d)&&p.isFunction(e)?c.apply(this,arguments):this.animate(c$(b,!0),d,e,f)}}),p.fn.extend({fadeTo:function(a,b,c,d){return this.filter(bZ).css("opacity",0).show().end().animate({opacity:b},a,c,d)},animate:function(a,b,c,d){var e=p.isEmptyObject(a),f=p.speed(b,c,d),g=function(){var b=cW(this,p.extend({},a),f);e&&b.stop(!0)};return e||f.queue===!1?this.each(g):this.queue(f.queue,g)},stop:function(a,c,d){var e=function(a){var b=a.stop;delete a.stop,b(d)};return typeof a!="string"&&(d=c,c=a,a=b),c&&a!==!1&&this.queue(a||"fx",[]),this.each(function(){var b=!0,c=a!=null&&a+"queueHooks",f=p.timers,g=p._data(this);if(c)g[c]&&g[c].stop&&e(g[c]);else for(c in g)g[c]&&g[c].stop&&cR.test(c)&&e(g[c]);for(c=f.length;c--;)f[c].elem===this&&(a==null||f[c].queue===a)&&(f[c].anim.stop(d),b=!1,f.splice(c,1));(b||!d)&&p.dequeue(this,a)})}}),p.each({slideDown:c$("show"),slideUp:c$("hide"),slideToggle:c$("toggle"),fadeIn:{opacity:"show"},fadeOut:{opacity:"hide"},fadeToggle:{opacity:"toggle"}},function(a,b){p.fn[a]=function(a,c,d){return this.animate(b,a,c,d)}}),p.speed=function(a,b,c){var d=a&&typeof a=="object"?p.extend({},a):{complete:c||!c&&b||p.isFunction(a)&&a,duration:a,easing:c&&b||b&&!p.isFunction(b)&&b};d.duration=p.fx.off?0:typeof d.duration=="number"?d.duration:d.duration in p.fx.speeds?p.fx.speeds[d.duration]:p.fx.speeds._default;if(d.queue==null||d.queue===!0)d.queue="fx";return d.old=d.complete,d.complete=function(){p.isFunction(d.old)&&d.old.call(this),d.queue&&p.dequeue(this,d.queue)},d},p.easing={linear:function(a){return a},swing:function(a){return.5-Math.cos(a*Math.PI)/2}},p.timers=[],p.fx=cZ.prototype.init,p.fx.tick=function(){var a,b=p.timers,c=0;for(;c<b.length;c++)a=b[c],!a()&&b[c]===a&&b.splice(c--,1);b.length||p.fx.stop()},p.fx.timer=function(a){a()&&p.timers.push(a)&&!cO&&(cO=setInterval(p.fx.tick,p.fx.interval))},p.fx.interval=13,p.fx.stop=function(){clearInterval(cO),cO=null},p.fx.speeds={slow:600,fast:200,_default:400},p.fx.step={},p.expr&&p.expr.filters&&(p.expr.filters.animated=function(a){return p.grep(p.timers,function(b){return a===b.elem}).length});var c_=/^(?:body|html)$/i;p.fn.offset=function(a){if(arguments.length)return a===b?this:this.each(function(b){p.offset.setOffset(this,a,b)});var c,d,e,f,g,h,i,j={top:0,left:0},k=this[0],l=k&&k.ownerDocument;if(!l)return;return(d=l.body)===k?p.offset.bodyOffset(k):(c=l.documentElement,p.contains(c,k)?(typeof k.getBoundingClientRect!="undefined"&&(j=k.getBoundingClientRect()),e=da(l),f=c.clientTop||d.clientTop||0,g=c.clientLeft||d.clientLeft||0,h=e.pageYOffset||c.scrollTop,i=e.pageXOffset||c.scrollLeft,{top:j.top+h-f,left:j.left+i-g}):j)},p.offset={bodyOffset:function(a){var b=a.offsetTop,c=a.offsetLeft;return p.support.doesNotIncludeMarginInBodyOffset&&(b+=parseFloat(p.css(a,"marginTop"))||0,c+=parseFloat(p.css(a,"marginLeft"))||0),{top:b,left:c}},setOffset:function(a,b,c){var d=p.css(a,"position");d==="static"&&(a.style.position="relative");var e=p(a),f=e.offset(),g=p.css(a,"top"),h=p.css(a,"left"),i=(d==="absolute"||d==="fixed")&&p.inArray("auto",[g,h])>-1,j={},k={},l,m;i?(k=e.position(),l=k.top,m=k.left):(l=parseFloat(g)||0,m=parseFloat(h)||0),p.isFunction(b)&&(b=b.call(a,c,f)),b.top!=null&&(j.top=b.top-f.top+l),b.left!=null&&(j.left=b.left-f.left+m),"using"in b?b.using.call(a,j):e.css(j)}},p.fn.extend({position:function(){if(!this[0])return;var a=this[0],b=this.offsetParent(),c=this.offset(),d=c_.test(b[0].nodeName)?{top:0,left:0}:b.offset();return c.top-=parseFloat(p.css(a,"marginTop"))||0,c.left-=parseFloat(p.css(a,"marginLeft"))||0,d.top+=parseFloat(p.css(b[0],"borderTopWidth"))||0,d.left+=parseFloat(p.css(b[0],"borderLeftWidth"))||0,{top:c.top-d.top,left:c.left-d.left}},offsetParent:function(){return this.map(function(){var a=this.offsetParent||e.body;while(a&&!c_.test(a.nodeName)&&p.css(a,"position")==="static")a=a.offsetParent;return a||e.body})}}),p.each({scrollLeft:"pageXOffset",scrollTop:"pageYOffset"},function(a,c){var d=/Y/.test(c);p.fn[a]=function(e){return p.access(this,function(a,e,f){var g=da(a);if(f===b)return g?c in g?g[c]:g.document.documentElement[e]:a[e];g?g.scrollTo(d?p(g).scrollLeft():f,d?f:p(g).scrollTop()):a[e]=f},a,e,arguments.length,null)}}),p.each({Height:"height",Width:"width"},function(a,c){p.each({padding:"inner"+a,content:c,"":"outer"+a},function(d,e){p.fn[e]=function(e,f){var g=arguments.length&&(d||typeof e!="boolean"),h=d||(e===!0||f===!0?"margin":"border");return p.access(this,function(c,d,e){var f;return p.isWindow(c)?c.document.documentElement["client"+a]:c.nodeType===9?(f=c.documentElement,Math.max(c.body["scroll"+a],f["scroll"+a],c.body["offset"+a],f["offset"+a],f["client"+a])):e===b?p.css(c,d,e,h):p.style(c,d,e,h)},c,g?e:b,g,null)}})}),a.jQuery=a.$=p,typeof define=="function"&&define.amd&&define.amd.jQuery&&define("jquery",[],function(){return p})})(window);
\ No newline at end of file
diff --git a/v3/js/jquery-ui-1.8.24.custom.min.js b/v3/js/jquery-ui-1.8.24.custom.min.js
new file mode 100644
index 000000000..a684be39f
--- /dev/null
+++ b/v3/js/jquery-ui-1.8.24.custom.min.js
@@ -0,0 +1,25 @@
+/*! jQuery UI - v1.8.24 - 2012-09-28
+* https://github.com/jquery/jquery-ui
+* Includes: jquery.ui.core.js
+* Copyright (c) 2012 AUTHORS.txt; Licensed MIT, GPL */
+(function(a,b){function c(b,c){var e=b.nodeName.toLowerCase();if("area"===e){var f=b.parentNode,g=f.name,h;return!b.href||!g||f.nodeName.toLowerCase()!=="map"?!1:(h=a("img[usemap=#"+g+"]")[0],!!h&&d(h))}return(/input|select|textarea|button|object/.test(e)?!b.disabled:"a"==e?b.href||c:c)&&d(b)}function d(b){return!a(b).parents().andSelf().filter(function(){return a.curCSS(this,"visibility")==="hidden"||a.expr.filters.hidden(this)}).length}a.ui=a.ui||{};if(a.ui.version)return;a.extend(a.ui,{version:"1.8.24",keyCode:{ALT:18,BACKSPACE:8,CAPS_LOCK:20,COMMA:188,COMMAND:91,COMMAND_LEFT:91,COMMAND_RIGHT:93,CONTROL:17,DELETE:46,DOWN:40,END:35,ENTER:13,ESCAPE:27,HOME:36,INSERT:45,LEFT:37,MENU:93,NUMPAD_ADD:107,NUMPAD_DECIMAL:110,NUMPAD_DIVIDE:111,NUMPAD_ENTER:108,NUMPAD_MULTIPLY:106,NUMPAD_SUBTRACT:109,PAGE_DOWN:34,PAGE_UP:33,PERIOD:190,RIGHT:39,SHIFT:16,SPACE:32,TAB:9,UP:38,WINDOWS:91}}),a.fn.extend({propAttr:a.fn.prop||a.fn.attr,_focus:a.fn.focus,focus:function(b,c){return typeof b=="number"?this.each(function(){var d=this;setTimeout(function(){a(d).focus(),c&&c.call(d)},b)}):this._focus.apply(this,arguments)},scrollParent:function(){var b;return a.browser.msie&&/(static|relative)/.test(this.css("position"))||/absolute/.test(this.css("position"))?b=this.parents().filter(function(){return/(relative|absolute|fixed)/.test(a.curCSS(this,"position",1))&&/(auto|scroll)/.test(a.curCSS(this,"overflow",1)+a.curCSS(this,"overflow-y",1)+a.curCSS(this,"overflow-x",1))}).eq(0):b=this.parents().filter(function(){return/(auto|scroll)/.test(a.curCSS(this,"overflow",1)+a.curCSS(this,"overflow-y",1)+a.curCSS(this,"overflow-x",1))}).eq(0),/fixed/.test(this.css("position"))||!b.length?a(document):b},zIndex:function(c){if(c!==b)return this.css("zIndex",c);if(this.length){var d=a(this[0]),e,f;while(d.length&&d[0]!==document){e=d.css("position");if(e==="absolute"||e==="relative"||e==="fixed"){f=parseInt(d.css("zIndex"),10);if(!isNaN(f)&&f!==0)return f}d=d.parent()}}return 0},disableSelection:function(){return this.bind((a.support.selectstart?"selectstart":"mousedown")+".ui-disableSelection",function(a){a.preventDefault()})},enableSelection:function(){return this.unbind(".ui-disableSelection")}}),a("<a>").outerWidth(1).jquery||a.each(["Width","Height"],function(c,d){function h(b,c,d,f){return a.each(e,function(){c-=parseFloat(a.curCSS(b,"padding"+this,!0))||0,d&&(c-=parseFloat(a.curCSS(b,"border"+this+"Width",!0))||0),f&&(c-=parseFloat(a.curCSS(b,"margin"+this,!0))||0)}),c}var e=d==="Width"?["Left","Right"]:["Top","Bottom"],f=d.toLowerCase(),g={innerWidth:a.fn.innerWidth,innerHeight:a.fn.innerHeight,outerWidth:a.fn.outerWidth,outerHeight:a.fn.outerHeight};a.fn["inner"+d]=function(c){return c===b?g["inner"+d].call(this):this.each(function(){a(this).css(f,h(this,c)+"px")})},a.fn["outer"+d]=function(b,c){return typeof b!="number"?g["outer"+d].call(this,b):this.each(function(){a(this).css(f,h(this,b,!0,c)+"px")})}}),a.extend(a.expr[":"],{data:a.expr.createPseudo?a.expr.createPseudo(function(b){return function(c){return!!a.data(c,b)}}):function(b,c,d){return!!a.data(b,d[3])},focusable:function(b){return c(b,!isNaN(a.attr(b,"tabindex")))},tabbable:function(b){var d=a.attr(b,"tabindex"),e=isNaN(d);return(e||d>=0)&&c(b,!e)}}),a(function(){var b=document.body,c=b.appendChild(c=document.createElement("div"));c.offsetHeight,a.extend(c.style,{minHeight:"100px",height:"auto",padding:0,borderWidth:0}),a.support.minHeight=c.offsetHeight===100,a.support.selectstart="onselectstart"in c,b.removeChild(c).style.display="none"}),a.curCSS||(a.curCSS=a.css),a.extend(a.ui,{plugin:{add:function(b,c,d){var e=a.ui[b].prototype;for(var f in d)e.plugins[f]=e.plugins[f]||[],e.plugins[f].push([c,d[f]])},call:function(a,b,c){var d=a.plugins[b];if(!d||!a.element[0].parentNode)return;for(var e=0;e<d.length;e++)a.options[d[e][0]]&&d[e][1].apply(a.element,c)}},contains:function(a,b){return document.compareDocumentPosition?a.compareDocumentPosition(b)&16:a!==b&&a.contains(b)},hasScroll:function(b,c){if(a(b).css("overflow")==="hidden")return!1;var d=c&&c==="left"?"scrollLeft":"scrollTop",e=!1;return b[d]>0?!0:(b[d]=1,e=b[d]>0,b[d]=0,e)},isOverAxis:function(a,b,c){return a>b&&a<b+c},isOver:function(b,c,d,e,f,g){return a.ui.isOverAxis(b,d,f)&&a.ui.isOverAxis(c,e,g)}})})(jQuery);;/*! jQuery UI - v1.8.24 - 2012-09-28
+* https://github.com/jquery/jquery-ui
+* Includes: jquery.ui.widget.js
+* Copyright (c) 2012 AUTHORS.txt; Licensed MIT, GPL */
+(function(a,b){if(a.cleanData){var c=a.cleanData;a.cleanData=function(b){for(var d=0,e;(e=b[d])!=null;d++)try{a(e).triggerHandler("remove")}catch(f){}c(b)}}else{var d=a.fn.remove;a.fn.remove=function(b,c){return this.each(function(){return c||(!b||a.filter(b,[this]).length)&&a("*",this).add([this]).each(function(){try{a(this).triggerHandler("remove")}catch(b){}}),d.call(a(this),b,c)})}}a.widget=function(b,c,d){var e=b.split(".")[0],f;b=b.split(".")[1],f=e+"-"+b,d||(d=c,c=a.Widget),a.expr[":"][f]=function(c){return!!a.data(c,b)},a[e]=a[e]||{},a[e][b]=function(a,b){arguments.length&&this._createWidget(a,b)};var g=new c;g.options=a.extend(!0,{},g.options),a[e][b].prototype=a.extend(!0,g,{namespace:e,widgetName:b,widgetEventPrefix:a[e][b].prototype.widgetEventPrefix||b,widgetBaseClass:f},d),a.widget.bridge(b,a[e][b])},a.widget.bridge=function(c,d){a.fn[c]=function(e){var f=typeof e=="string",g=Array.prototype.slice.call(arguments,1),h=this;return e=!f&&g.length?a.extend.apply(null,[!0,e].concat(g)):e,f&&e.charAt(0)==="_"?h:(f?this.each(function(){var d=a.data(this,c),f=d&&a.isFunction(d[e])?d[e].apply(d,g):d;if(f!==d&&f!==b)return h=f,!1}):this.each(function(){var b=a.data(this,c);b?b.option(e||{})._init():a.data(this,c,new d(e,this))}),h)}},a.Widget=function(a,b){arguments.length&&this._createWidget(a,b)},a.Widget.prototype={widgetName:"widget",widgetEventPrefix:"",options:{disabled:!1},_createWidget:function(b,c){a.data(c,this.widgetName,this),this.element=a(c),this.options=a.extend(!0,{},this.options,this._getCreateOptions(),b);var d=this;this.element.bind("remove."+this.widgetName,function(){d.destroy()}),this._create(),this._trigger("create"),this._init()},_getCreateOptions:function(){return a.metadata&&a.metadata.get(this.element[0])[this.widgetName]},_create:function(){},_init:function(){},destroy:function(){this.element.unbind("."+this.widgetName).removeData(this.widgetName),this.widget().unbind("."+this.widgetName).removeAttr("aria-disabled").removeClass(this.widgetBaseClass+"-disabled "+"ui-state-disabled")},widget:function(){return this.element},option:function(c,d){var e=c;if(arguments.length===0)return a.extend({},this.options);if(typeof c=="string"){if(d===b)return this.options[c];e={},e[c]=d}return this._setOptions(e),this},_setOptions:function(b){var c=this;return a.each(b,function(a,b){c._setOption(a,b)}),this},_setOption:function(a,b){return this.options[a]=b,a==="disabled"&&this.widget()[b?"addClass":"removeClass"](this.widgetBaseClass+"-disabled"+" "+"ui-state-disabled").attr("aria-disabled",b),this},enable:function(){return this._setOption("disabled",!1)},disable:function(){return this._setOption("disabled",!0)},_trigger:function(b,c,d){var e,f,g=this.options[b];d=d||{},c=a.Event(c),c.type=(b===this.widgetEventPrefix?b:this.widgetEventPrefix+b).toLowerCase(),c.target=this.element[0],f=c.originalEvent;if(f)for(e in f)e in c||(c[e]=f[e]);return this.element.trigger(c,d),!(a.isFunction(g)&&g.call(this.element[0],c,d)===!1||c.isDefaultPrevented())}}})(jQuery);;/*! jQuery UI - v1.8.24 - 2012-09-28
+* https://github.com/jquery/jquery-ui
+* Includes: jquery.ui.mouse.js
+* Copyright (c) 2012 AUTHORS.txt; Licensed MIT, GPL */
+(function(a,b){var c=!1;a(document).mouseup(function(a){c=!1}),a.widget("ui.mouse",{options:{cancel:":input,option",distance:1,delay:0},_mouseInit:function(){var b=this;this.element.bind("mousedown."+this.widgetName,function(a){return b._mouseDown(a)}).bind("click."+this.widgetName,function(c){if(!0===a.data(c.target,b.widgetName+".preventClickEvent"))return a.removeData(c.target,b.widgetName+".preventClickEvent"),c.stopImmediatePropagation(),!1}),this.started=!1},_mouseDestroy:function(){this.element.unbind("."+this.widgetName),this._mouseMoveDelegate&&a(document).unbind("mousemove."+this.widgetName,this._mouseMoveDelegate).unbind("mouseup."+this.widgetName,this._mouseUpDelegate)},_mouseDown:function(b){if(c)return;this._mouseStarted&&this._mouseUp(b),this._mouseDownEvent=b;var d=this,e=b.which==1,f=typeof this.options.cancel=="string"&&b.target.nodeName?a(b.target).closest(this.options.cancel).length:!1;if(!e||f||!this._mouseCapture(b))return!0;this.mouseDelayMet=!this.options.delay,this.mouseDelayMet||(this._mouseDelayTimer=setTimeout(function(){d.mouseDelayMet=!0},this.options.delay));if(this._mouseDistanceMet(b)&&this._mouseDelayMet(b)){this._mouseStarted=this._mouseStart(b)!==!1;if(!this._mouseStarted)return b.preventDefault(),!0}return!0===a.data(b.target,this.widgetName+".preventClickEvent")&&a.removeData(b.target,this.widgetName+".preventClickEvent"),this._mouseMoveDelegate=function(a){return d._mouseMove(a)},this._mouseUpDelegate=function(a){return d._mouseUp(a)},a(document).bind("mousemove."+this.widgetName,this._mouseMoveDelegate).bind("mouseup."+this.widgetName,this._mouseUpDelegate),b.preventDefault(),c=!0,!0},_mouseMove:function(b){return!a.browser.msie||document.documentMode>=9||!!b.button?this._mouseStarted?(this._mouseDrag(b),b.preventDefault()):(this._mouseDistanceMet(b)&&this._mouseDelayMet(b)&&(this._mouseStarted=this._mouseStart(this._mouseDownEvent,b)!==!1,this._mouseStarted?this._mouseDrag(b):this._mouseUp(b)),!this._mouseStarted):this._mouseUp(b)},_mouseUp:function(b){return a(document).unbind("mousemove."+this.widgetName,this._mouseMoveDelegate).unbind("mouseup."+this.widgetName,this._mouseUpDelegate),this._mouseStarted&&(this._mouseStarted=!1,b.target==this._mouseDownEvent.target&&a.data(b.target,this.widgetName+".preventClickEvent",!0),this._mouseStop(b)),!1},_mouseDistanceMet:function(a){return Math.max(Math.abs(this._mouseDownEvent.pageX-a.pageX),Math.abs(this._mouseDownEvent.pageY-a.pageY))>=this.options.distance},_mouseDelayMet:function(a){return this.mouseDelayMet},_mouseStart:function(a){},_mouseDrag:function(a){},_mouseStop:function(a){},_mouseCapture:function(a){return!0}})})(jQuery);;/*! jQuery UI - v1.8.24 - 2012-09-28
+* https://github.com/jquery/jquery-ui
+* Includes: jquery.ui.position.js
+* Copyright (c) 2012 AUTHORS.txt; Licensed MIT, GPL */
+(function(a,b){a.ui=a.ui||{};var c=/left|center|right/,d=/top|center|bottom/,e="center",f={},g=a.fn.position,h=a.fn.offset;a.fn.position=function(b){if(!b||!b.of)return g.apply(this,arguments);b=a.extend({},b);var h=a(b.of),i=h[0],j=(b.collision||"flip").split(" "),k=b.offset?b.offset.split(" "):[0,0],l,m,n;return i.nodeType===9?(l=h.width(),m=h.height(),n={top:0,left:0}):i.setTimeout?(l=h.width(),m=h.height(),n={top:h.scrollTop(),left:h.scrollLeft()}):i.preventDefault?(b.at="left top",l=m=0,n={top:b.of.pageY,left:b.of.pageX}):(l=h.outerWidth(),m=h.outerHeight(),n=h.offset()),a.each(["my","at"],function(){var a=(b[this]||"").split(" ");a.length===1&&(a=c.test(a[0])?a.concat([e]):d.test(a[0])?[e].concat(a):[e,e]),a[0]=c.test(a[0])?a[0]:e,a[1]=d.test(a[1])?a[1]:e,b[this]=a}),j.length===1&&(j[1]=j[0]),k[0]=parseInt(k[0],10)||0,k.length===1&&(k[1]=k[0]),k[1]=parseInt(k[1],10)||0,b.at[0]==="right"?n.left+=l:b.at[0]===e&&(n.left+=l/2),b.at[1]==="bottom"?n.top+=m:b.at[1]===e&&(n.top+=m/2),n.left+=k[0],n.top+=k[1],this.each(function(){var c=a(this),d=c.outerWidth(),g=c.outerHeight(),h=parseInt(a.curCSS(this,"marginLeft",!0))||0,i=parseInt(a.curCSS(this,"marginTop",!0))||0,o=d+h+(parseInt(a.curCSS(this,"marginRight",!0))||0),p=g+i+(parseInt(a.curCSS(this,"marginBottom",!0))||0),q=a.extend({},n),r;b.my[0]==="right"?q.left-=d:b.my[0]===e&&(q.left-=d/2),b.my[1]==="bottom"?q.top-=g:b.my[1]===e&&(q.top-=g/2),f.fractions||(q.left=Math.round(q.left),q.top=Math.round(q.top)),r={left:q.left-h,top:q.top-i},a.each(["left","top"],function(c,e){a.ui.position[j[c]]&&a.ui.position[j[c]][e](q,{targetWidth:l,targetHeight:m,elemWidth:d,elemHeight:g,collisionPosition:r,collisionWidth:o,collisionHeight:p,offset:k,my:b.my,at:b.at})}),a.fn.bgiframe&&c.bgiframe(),c.offset(a.extend(q,{using:b.using}))})},a.ui.position={fit:{left:function(b,c){var d=a(window),e=c.collisionPosition.left+c.collisionWidth-d.width()-d.scrollLeft();b.left=e>0?b.left-e:Math.max(b.left-c.collisionPosition.left,b.left)},top:function(b,c){var d=a(window),e=c.collisionPosition.top+c.collisionHeight-d.height()-d.scrollTop();b.top=e>0?b.top-e:Math.max(b.top-c.collisionPosition.top,b.top)}},flip:{left:function(b,c){if(c.at[0]===e)return;var d=a(window),f=c.collisionPosition.left+c.collisionWidth-d.width()-d.scrollLeft(),g=c.my[0]==="left"?-c.elemWidth:c.my[0]==="right"?c.elemWidth:0,h=c.at[0]==="left"?c.targetWidth:-c.targetWidth,i=-2*c.offset[0];b.left+=c.collisionPosition.left<0?g+h+i:f>0?g+h+i:0},top:function(b,c){if(c.at[1]===e)return;var d=a(window),f=c.collisionPosition.top+c.collisionHeight-d.height()-d.scrollTop(),g=c.my[1]==="top"?-c.elemHeight:c.my[1]==="bottom"?c.elemHeight:0,h=c.at[1]==="top"?c.targetHeight:-c.targetHeight,i=-2*c.offset[1];b.top+=c.collisionPosition.top<0?g+h+i:f>0?g+h+i:0}}},a.offset.setOffset||(a.offset.setOffset=function(b,c){/static/.test(a.curCSS(b,"position"))&&(b.style.position="relative");var d=a(b),e=d.offset(),f=parseInt(a.curCSS(b,"top",!0),10)||0,g=parseInt(a.curCSS(b,"left",!0),10)||0,h={top:c.top-e.top+f,left:c.left-e.left+g};"using"in c?c.using.call(b,h):d.css(h)},a.fn.offset=function(b){var c=this[0];return!c||!c.ownerDocument?null:b?a.isFunction(b)?this.each(function(c){a(this).offset(b.call(this,c,a(this).offset()))}):this.each(function(){a.offset.setOffset(this,b)}):h.call(this)}),a.curCSS||(a.curCSS=a.css),function(){var b=document.getElementsByTagName("body")[0],c=document.createElement("div"),d,e,g,h,i;d=document.createElement(b?"div":"body"),g={visibility:"hidden",width:0,height:0,border:0,margin:0,background:"none"},b&&a.extend(g,{position:"absolute",left:"-1000px",top:"-1000px"});for(var j in g)d.style[j]=g[j];d.appendChild(c),e=b||document.documentElement,e.insertBefore(d,e.firstChild),c.style.cssText="position: absolute; left: 10.7432222px; top: 10.432325px; height: 30px; width: 201px;",h=a(c).offset(function(a,b){return b}).offset(),d.innerHTML="",e.removeChild(d),i=h.top+h.left+(b?2e3:0),f.fractions=i>21&&i<22}()})(jQuery);;/*! jQuery UI - v1.8.24 - 2012-09-28
+* https://github.com/jquery/jquery-ui
+* Includes: jquery.ui.resizable.js
+* Copyright (c) 2012 AUTHORS.txt; Licensed MIT, GPL */
+(function(a,b){a.widget("ui.resizable",a.ui.mouse,{widgetEventPrefix:"resize",options:{alsoResize:!1,animate:!1,animateDuration:"slow",animateEasing:"swing",aspectRatio:!1,autoHide:!1,containment:!1,ghost:!1,grid:!1,handles:"e,s,se",helper:!1,maxHeight:null,maxWidth:null,minHeight:10,minWidth:10,zIndex:1e3},_create:function(){var b=this,c=this.options;this.element.addClass("ui-resizable"),a.extend(this,{_aspectRatio:!!c.aspectRatio,aspectRatio:c.aspectRatio,originalElement:this.element,_proportionallyResizeElements:[],_helper:c.helper||c.ghost||c.animate?c.helper||"ui-resizable-helper":null}),this.element[0].nodeName.match(/canvas|textarea|input|select|button|img/i)&&(this.element.wrap(a('<div class="ui-wrapper" style="overflow: hidden;"></div>').css({position:this.element.css("position"),width:this.element.outerWidth(),height:this.element.outerHeight(),top:this.element.css("top"),left:this.element.css("left")})),this.element=this.element.parent().data("resizable",this.element.data("resizable")),this.elementIsWrapper=!0,this.element.css({marginLeft:this.originalElement.css("marginLeft"),marginTop:this.originalElement.css("marginTop"),marginRight:this.originalElement.css("marginRight"),marginBottom:this.originalElement.css("marginBottom")}),this.originalElement.css({marginLeft:0,marginTop:0,marginRight:0,marginBottom:0}),this.originalResizeStyle=this.originalElement.css("resize"),this.originalElement.css("resize","none"),this._proportionallyResizeElements.push(this.originalElement.css({position:"static",zoom:1,display:"block"})),this.originalElement.css({margin:this.originalElement.css("margin")}),this._proportionallyResize()),this.handles=c.handles||(a(".ui-resizable-handle",this.element).length?{n:".ui-resizable-n",e:".ui-resizable-e",s:".ui-resizable-s",w:".ui-resizable-w",se:".ui-resizable-se",sw:".ui-resizable-sw",ne:".ui-resizable-ne",nw:".ui-resizable-nw"}:"e,s,se");if(this.handles.constructor==String){this.handles=="all"&&(this.handles="n,e,s,w,se,sw,ne,nw");var d=this.handles.split(",");this.handles={};for(var e=0;e<d.length;e++){var f=a.trim(d[e]),g="ui-resizable-"+f,h=a('<div class="ui-resizable-handle '+g+'"></div>');h.css({zIndex:c.zIndex}),"se"==f&&h.addClass("ui-icon ui-icon-gripsmall-diagonal-se"),this.handles[f]=".ui-resizable-"+f,this.element.append(h)}}this._renderAxis=function(b){b=b||this.element;for(var c in this.handles){this.handles[c].constructor==String&&(this.handles[c]=a(this.handles[c],this.element).show());if(this.elementIsWrapper&&this.originalElement[0].nodeName.match(/textarea|input|select|button/i)){var d=a(this.handles[c],this.element),e=0;e=/sw|ne|nw|se|n|s/.test(c)?d.outerHeight():d.outerWidth();var f=["padding",/ne|nw|n/.test(c)?"Top":/se|sw|s/.test(c)?"Bottom":/^e$/.test(c)?"Right":"Left"].join("");b.css(f,e),this._proportionallyResize()}if(!a(this.handles[c]).length)continue}},this._renderAxis(this.element),this._handles=a(".ui-resizable-handle",this.element).disableSelection(),this._handles.mouseover(function(){if(!b.resizing){if(this.className)var a=this.className.match(/ui-resizable-(se|sw|ne|nw|n|e|s|w)/i);b.axis=a&&a[1]?a[1]:"se"}}),c.autoHide&&(this._handles.hide(),a(this.element).addClass("ui-resizable-autohide").hover(function(){if(c.disabled)return;a(this).removeClass("ui-resizable-autohide"),b._handles.show()},function(){if(c.disabled)return;b.resizing||(a(this).addClass("ui-resizable-autohide"),b._handles.hide())})),this._mouseInit()},destroy:function(){this._mouseDestroy();var b=function(b){a(b).removeClass("ui-resizable ui-resizable-disabled ui-resizable-resizing").removeData("resizable").unbind(".resizable").find(".ui-resizable-handle").remove()};if(this.elementIsWrapper){b(this.element);var c=this.element;c.after(this.originalElement.css({position:c.css("position"),width:c.outerWidth(),height:c.outerHeight(),top:c.css("top"),left:c.css("left")})).remove()}return this.originalElement.css("resize",this.originalResizeStyle),b(this.originalElement),this},_mouseCapture:function(b){var c=!1;for(var d in this.handles)a(this.handles[d])[0]==b.target&&(c=!0);return!this.options.disabled&&c},_mouseStart:function(b){var d=this.options,e=this.element.position(),f=this.element;this.resizing=!0,this.documentScroll={top:a(document).scrollTop(),left:a(document).scrollLeft()},(f.is(".ui-draggable")||/absolute/.test(f.css("position")))&&f.css({position:"absolute",top:e.top,left:e.left}),this._renderProxy();var g=c(this.helper.css("left")),h=c(this.helper.css("top"));d.containment&&(g+=a(d.containment).scrollLeft()||0,h+=a(d.containment).scrollTop()||0),this.offset=this.helper.offset(),this.position={left:g,top:h},this.size=this._helper?{width:f.outerWidth(),height:f.outerHeight()}:{width:f.width(),height:f.height()},this.originalSize=this._helper?{width:f.outerWidth(),height:f.outerHeight()}:{width:f.width(),height:f.height()},this.originalPosition={left:g,top:h},this.sizeDiff={width:f.outerWidth()-f.width(),height:f.outerHeight()-f.height()},this.originalMousePosition={left:b.pageX,top:b.pageY},this.aspectRatio=typeof d.aspectRatio=="number"?d.aspectRatio:this.originalSize.width/this.originalSize.height||1;var i=a(".ui-resizable-"+this.axis).css("cursor");return a("body").css("cursor",i=="auto"?this.axis+"-resize":i),f.addClass("ui-resizable-resizing"),this._propagate("start",b),!0},_mouseDrag:function(b){var c=this.helper,d=this.options,e={},f=this,g=this.originalMousePosition,h=this.axis,i=b.pageX-g.left||0,j=b.pageY-g.top||0,k=this._change[h];if(!k)return!1;var l=k.apply(this,[b,i,j]),m=a.browser.msie&&a.browser.version<7,n=this.sizeDiff;this._updateVirtualBoundaries(b.shiftKey);if(this._aspectRatio||b.shiftKey)l=this._updateRatio(l,b);return l=this._respectSize(l,b),this._propagate("resize",b),c.css({top:this.position.top+"px",left:this.position.left+"px",width:this.size.width+"px",height:this.size.height+"px"}),!this._helper&&this._proportionallyResizeElements.length&&this._proportionallyResize(),this._updateCache(l),this._trigger("resize",b,this.ui()),!1},_mouseStop:function(b){this.resizing=!1;var c=this.options,d=this;if(this._helper){var e=this._proportionallyResizeElements,f=e.length&&/textarea/i.test(e[0].nodeName),g=f&&a.ui.hasScroll(e[0],"left")?0:d.sizeDiff.height,h=f?0:d.sizeDiff.width,i={width:d.helper.width()-h,height:d.helper.height()-g},j=parseInt(d.element.css("left"),10)+(d.position.left-d.originalPosition.left)||null,k=parseInt(d.element.css("top"),10)+(d.position.top-d.originalPosition.top)||null;c.animate||this.element.css(a.extend(i,{top:k,left:j})),d.helper.height(d.size.height),d.helper.width(d.size.width),this._helper&&!c.animate&&this._proportionallyResize()}return a("body").css("cursor","auto"),this.element.removeClass("ui-resizable-resizing"),this._propagate("stop",b),this._helper&&this.helper.remove(),!1},_updateVirtualBoundaries:function(a){var b=this.options,c,e,f,g,h;h={minWidth:d(b.minWidth)?b.minWidth:0,maxWidth:d(b.maxWidth)?b.maxWidth:Infinity,minHeight:d(b.minHeight)?b.minHeight:0,maxHeight:d(b.maxHeight)?b.maxHeight:Infinity};if(this._aspectRatio||a)c=h.minHeight*this.aspectRatio,f=h.minWidth/this.aspectRatio,e=h.maxHeight*this.aspectRatio,g=h.maxWidth/this.aspectRatio,c>h.minWidth&&(h.minWidth=c),f>h.minHeight&&(h.minHeight=f),e<h.maxWidth&&(h.maxWidth=e),g<h.maxHeight&&(h.maxHeight=g);this._vBoundaries=h},_updateCache:function(a){var b=this.options;this.offset=this.helper.offset(),d(a.left)&&(this.position.left=a.left),d(a.top)&&(this.position.top=a.top),d(a.height)&&(this.size.height=a.height),d(a.width)&&(this.size.width=a.width)},_updateRatio:function(a,b){var c=this.options,e=this.position,f=this.size,g=this.axis;return d(a.height)?a.width=a.height*this.aspectRatio:d(a.width)&&(a.height=a.width/this.aspectRatio),g=="sw"&&(a.left=e.left+(f.width-a.width),a.top=null),g=="nw"&&(a.top=e.top+(f.height-a.height),a.left=e.left+(f.width-a.width)),a},_respectSize:function(a,b){var c=this.helper,e=this._vBoundaries,f=this._aspectRatio||b.shiftKey,g=this.axis,h=d(a.width)&&e.maxWidth&&e.maxWidth<a.width,i=d(a.height)&&e.maxHeight&&e.maxHeight<a.height,j=d(a.width)&&e.minWidth&&e.minWidth>a.width,k=d(a.height)&&e.minHeight&&e.minHeight>a.height;j&&(a.width=e.minWidth),k&&(a.height=e.minHeight),h&&(a.width=e.maxWidth),i&&(a.height=e.maxHeight);var l=this.originalPosition.left+this.originalSize.width,m=this.position.top+this.size.height,n=/sw|nw|w/.test(g),o=/nw|ne|n/.test(g);j&&n&&(a.left=l-e.minWidth),h&&n&&(a.left=l-e.maxWidth),k&&o&&(a.top=m-e.minHeight),i&&o&&(a.top=m-e.maxHeight);var p=!a.width&&!a.height;return p&&!a.left&&a.top?a.top=null:p&&!a.top&&a.left&&(a.left=null),a},_proportionallyResize:function(){var b=this.options;if(!this._proportionallyResizeElements.length)return;var c=this.helper||this.element;for(var d=0;d<this._proportionallyResizeElements.length;d++){var e=this._proportionallyResizeElements[d];if(!this.borderDif){var f=[e.css("borderTopWidth"),e.css("borderRightWidth"),e.css("borderBottomWidth"),e.css("borderLeftWidth")],g=[e.css("paddingTop"),e.css("paddingRight"),e.css("paddingBottom"),e.css("paddingLeft")];this.borderDif=a.map(f,function(a,b){var c=parseInt(a,10)||0,d=parseInt(g[b],10)||0;return c+d})}if(!a.browser.msie||!a(c).is(":hidden")&&!a(c).parents(":hidden").length)e.css({height:c.height()-this.borderDif[0]-this.borderDif[2]||0,width:c.width()-this.borderDif[1]-this.borderDif[3]||0});else continue}},_renderProxy:function(){var b=this.element,c=this.options;this.elementOffset=b.offset();if(this._helper){this.helper=this.helper||a('<div style="overflow:hidden;"></div>');var d=a.browser.msie&&a.browser.version<7,e=d?1:0,f=d?2:-1;this.helper.addClass(this._helper).css({width:this.element.outerWidth()+f,height:this.element.outerHeight()+f,position:"absolute",left:this.elementOffset.left-e+"px",top:this.elementOffset.top-e+"px",zIndex:++c.zIndex}),this.helper.appendTo("body").disableSelection()}else this.helper=this.element},_change:{e:function(a,b,c){return{width:this.originalSize.width+b}},w:function(a,b,c){var d=this.options,e=this.originalSize,f=this.originalPosition;return{left:f.left+b,width:e.width-b}},n:function(a,b,c){var d=this.options,e=this.originalSize,f=this.originalPosition;return{top:f.top+c,height:e.height-c}},s:function(a,b,c){return{height:this.originalSize.height+c}},se:function(b,c,d){return a.extend(this._change.s.apply(this,arguments),this._change.e.apply(this,[b,c,d]))},sw:function(b,c,d){return a.extend(this._change.s.apply(this,arguments),this._change.w.apply(this,[b,c,d]))},ne:function(b,c,d){return a.extend(this._change.n.apply(this,arguments),this._change.e.apply(this,[b,c,d]))},nw:function(b,c,d){return a.extend(this._change.n.apply(this,arguments),this._change.w.apply(this,[b,c,d]))}},_propagate:function(b,c){a.ui.plugin.call(this,b,[c,this.ui()]),b!="resize"&&this._trigger(b,c,this.ui())},plugins:{},ui:function(){return{originalElement:this.originalElement,element:this.element,helper:this.helper,position:this.position,size:this.size,originalSize:this.originalSize,originalPosition:this.originalPosition}}}),a.extend(a.ui.resizable,{version:"1.8.24"}),a.ui.plugin.add("resizable","alsoResize",{start:function(b,c){var d=a(this).data("resizable"),e=d.options,f=function(b){a(b).each(function(){var b=a(this);b.data("resizable-alsoresize",{width:parseInt(b.width(),10),height:parseInt(b.height(),10),left:parseInt(b.css("left"),10),top:parseInt(b.css("top"),10)})})};typeof e.alsoResize=="object"&&!e.alsoResize.parentNode?e.alsoResize.length?(e.alsoResize=e.alsoResize[0],f(e.alsoResize)):a.each(e.alsoResize,function(a){f(a)}):f(e.alsoResize)},resize:function(b,c){var d=a(this).data("resizable"),e=d.options,f=d.originalSize,g=d.originalPosition,h={height:d.size.height-f.height||0,width:d.size.width-f.width||0,top:d.position.top-g.top||0,left:d.position.left-g.left||0},i=function(b,d){a(b).each(function(){var b=a(this),e=a(this).data("resizable-alsoresize"),f={},g=d&&d.length?d:b.parents(c.originalElement[0]).length?["width","height"]:["width","height","top","left"];a.each(g,function(a,b){var c=(e[b]||0)+(h[b]||0);c&&c>=0&&(f[b]=c||null)}),b.css(f)})};typeof e.alsoResize=="object"&&!e.alsoResize.nodeType?a.each(e.alsoResize,function(a,b){i(a,b)}):i(e.alsoResize)},stop:function(b,c){a(this).removeData("resizable-alsoresize")}}),a.ui.plugin.add("resizable","animate",{stop:function(b,c){var d=a(this).data("resizable"),e=d.options,f=d._proportionallyResizeElements,g=f.length&&/textarea/i.test(f[0].nodeName),h=g&&a.ui.hasScroll(f[0],"left")?0:d.sizeDiff.height,i=g?0:d.sizeDiff.width,j={width:d.size.width-i,height:d.size.height-h},k=parseInt(d.element.css("left"),10)+(d.position.left-d.originalPosition.left)||null,l=parseInt(d.element.css("top"),10)+(d.position.top-d.originalPosition.top)||null;d.element.animate(a.extend(j,l&&k?{top:l,left:k}:{}),{duration:e.animateDuration,easing:e.animateEasing,step:function(){var c={width:parseInt(d.element.css("width"),10),height:parseInt(d.element.css("height"),10),top:parseInt(d.element.css("top"),10),left:parseInt(d.element.css("left"),10)};f&&f.length&&a(f[0]).css({width:c.width,height:c.height}),d._updateCache(c),d._propagate("resize",b)}})}}),a.ui.plugin.add("resizable","containment",{start:function(b,d){var e=a(this).data("resizable"),f=e.options,g=e.element,h=f.containment,i=h instanceof a?h.get(0):/parent/.test(h)?g.parent().get(0):h;if(!i)return;e.containerElement=a(i);if(/document/.test(h)||h==document)e.containerOffset={left:0,top:0},e.containerPosition={left:0,top:0},e.parentData={element:a(document),left:0,top:0,width:a(document).width(),height:a(document).height()||document.body.parentNode.scrollHeight};else{var j=a(i),k=[];a(["Top","Right","Left","Bottom"]).each(function(a,b){k[a]=c(j.css("padding"+b))}),e.containerOffset=j.offset(),e.containerPosition=j.position(),e.containerSize={height:j.innerHeight()-k[3],width:j.innerWidth()-k[1]};var l=e.containerOffset,m=e.containerSize.height,n=e.containerSize.width,o=a.ui.hasScroll(i,"left")?i.scrollWidth:n,p=a.ui.hasScroll(i)?i.scrollHeight:m;e.parentData={element:i,left:l.left,top:l.top,width:o,height:p}}},resize:function(b,c){var d=a(this).data("resizable"),e=d.options,f=d.containerSize,g=d.containerOffset,h=d.size,i=d.position,j=d._aspectRatio||b.shiftKey,k={top:0,left:0},l=d.containerElement;l[0]!=document&&/static/.test(l.css("position"))&&(k=g),i.left<(d._helper?g.left:0)&&(d.size.width=d.size.width+(d._helper?d.position.left-g.left:d.position.left-k.left),j&&(d.size.height=d.size.width/d.aspectRatio),d.position.left=e.helper?g.left:0),i.top<(d._helper?g.top:0)&&(d.size.height=d.size.height+(d._helper?d.position.top-g.top:d.position.top),j&&(d.size.width=d.size.height*d.aspectRatio),d.position.top=d._helper?g.top:0),d.offset.left=d.parentData.left+d.position.left,d.offset.top=d.parentData.top+d.position.top;var m=Math.abs((d._helper?d.offset.left-k.left:d.offset.left-k.left)+d.sizeDiff.width),n=Math.abs((d._helper?d.offset.top-k.top:d.offset.top-g.top)+d.sizeDiff.height),o=d.containerElement.get(0)==d.element.parent().get(0),p=/relative|absolute/.test(d.containerElement.css("position"));o&&p&&(m-=d.parentData.left),m+d.size.width>=d.parentData.width&&(d.size.width=d.parentData.width-m,j&&(d.size.height=d.size.width/d.aspectRatio)),n+d.size.height>=d.parentData.height&&(d.size.height=d.parentData.height-n,j&&(d.size.width=d.size.height*d.aspectRatio))},stop:function(b,c){var d=a(this).data("resizable"),e=d.options,f=d.position,g=d.containerOffset,h=d.containerPosition,i=d.containerElement,j=a(d.helper),k=j.offset(),l=j.outerWidth()-d.sizeDiff.width,m=j.outerHeight()-d.sizeDiff.height;d._helper&&!e.animate&&/relative/.test(i.css("position"))&&a(this).css({left:k.left-h.left-g.left,width:l,height:m}),d._helper&&!e.animate&&/static/.test(i.css("position"))&&a(this).css({left:k.left-h.left-g.left,width:l,height:m})}}),a.ui.plugin.add("resizable","ghost",{start:function(b,c){var d=a(this).data("resizable"),e=d.options,f=d.size;d.ghost=d.originalElement.clone(),d.ghost.css({opacity:.25,display:"block",position:"relative",height:f.height,width:f.width,margin:0,left:0,top:0}).addClass("ui-resizable-ghost").addClass(typeof e.ghost=="string"?e.ghost:""),d.ghost.appendTo(d.helper)},resize:function(b,c){var d=a(this).data("resizable"),e=d.options;d.ghost&&d.ghost.css({position:"relative",height:d.size.height,width:d.size.width})},stop:function(b,c){var d=a(this).data("resizable"),e=d.options;d.ghost&&d.helper&&d.helper.get(0).removeChild(d.ghost.get(0))}}),a.ui.plugin.add("resizable","grid",{resize:function(b,c){var d=a(this).data("resizable"),e=d.options,f=d.size,g=d.originalSize,h=d.originalPosition,i=d.axis,j=e._aspectRatio||b.shiftKey;e.grid=typeof e.grid=="number"?[e.grid,e.grid]:e.grid;var k=Math.round((f.width-g.width)/(e.grid[0]||1))*(e.grid[0]||1),l=Math.round((f.height-g.height)/(e.grid[1]||1))*(e.grid[1]||1);/^(se|s|e)$/.test(i)?(d.size.width=g.width+k,d.size.height=g.height+l):/^(ne)$/.test(i)?(d.size.width=g.width+k,d.size.height=g.height+l,d.position.top=h.top-l):/^(sw)$/.test(i)?(d.size.width=g.width+k,d.size.height=g.height+l,d.position.left=h.left-k):(d.size.width=g.width+k,d.size.height=g.height+l,d.position.top=h.top-l,d.position.left=h.left-k)}});var c=function(a){return parseInt(a,10)||0},d=function(a){return!isNaN(parseInt(a,10))}})(jQuery);;/*! jQuery UI - v1.8.24 - 2012-09-28
+* https://github.com/jquery/jquery-ui
+* Includes: jquery.ui.slider.js
+* Copyright (c) 2012 AUTHORS.txt; Licensed MIT, GPL */
+(function(a,b){var c=5;a.widget("ui.slider",a.ui.mouse,{widgetEventPrefix:"slide",options:{animate:!1,distance:0,max:100,min:0,orientation:"horizontal",range:!1,step:1,value:0,values:null},_create:function(){var b=this,d=this.options,e=this.element.find(".ui-slider-handle").addClass("ui-state-default ui-corner-all"),f="<a class='ui-slider-handle ui-state-default ui-corner-all' href='#'></a>",g=d.values&&d.values.length||1,h=[];this._keySliding=!1,this._mouseSliding=!1,this._animateOff=!0,this._handleIndex=null,this._detectOrientation(),this._mouseInit(),this.element.addClass("ui-slider ui-slider-"+this.orientation+" ui-widget"+" ui-widget-content"+" ui-corner-all"+(d.disabled?" ui-slider-disabled ui-disabled":"")),this.range=a([]),d.range&&(d.range===!0&&(d.values||(d.values=[this._valueMin(),this._valueMin()]),d.values.length&&d.values.length!==2&&(d.values=[d.values[0],d.values[0]])),this.range=a("<div></div>").appendTo(this.element).addClass("ui-slider-range ui-widget-header"+(d.range==="min"||d.range==="max"?" ui-slider-range-"+d.range:"")));for(var i=e.length;i<g;i+=1)h.push(f);this.handles=e.add(a(h.join("")).appendTo(b.element)),this.handle=this.handles.eq(0),this.handles.add(this.range).filter("a").click(function(a){a.preventDefault()}).hover(function(){d.disabled||a(this).addClass("ui-state-hover")},function(){a(this).removeClass("ui-state-hover")}).focus(function(){d.disabled?a(this).blur():(a(".ui-slider .ui-state-focus").removeClass("ui-state-focus"),a(this).addClass("ui-state-focus"))}).blur(function(){a(this).removeClass("ui-state-focus")}),this.handles.each(function(b){a(this).data("index.ui-slider-handle",b)}),this.handles.keydown(function(d){var e=a(this).data("index.ui-slider-handle"),f,g,h,i;if(b.options.disabled)return;switch(d.keyCode){case a.ui.keyCode.HOME:case a.ui.keyCode.END:case a.ui.keyCode.PAGE_UP:case a.ui.keyCode.PAGE_DOWN:case a.ui.keyCode.UP:case a.ui.keyCode.RIGHT:case a.ui.keyCode.DOWN:case a.ui.keyCode.LEFT:d.preventDefault();if(!b._keySliding){b._keySliding=!0,a(this).addClass("ui-state-active"),f=b._start(d,e);if(f===!1)return}}i=b.options.step,b.options.values&&b.options.values.length?g=h=b.values(e):g=h=b.value();switch(d.keyCode){case a.ui.keyCode.HOME:h=b._valueMin();break;case a.ui.keyCode.END:h=b._valueMax();break;case a.ui.keyCode.PAGE_UP:h=b._trimAlignValue(g+(b._valueMax()-b._valueMin())/c);break;case a.ui.keyCode.PAGE_DOWN:h=b._trimAlignValue(g-(b._valueMax()-b._valueMin())/c);break;case a.ui.keyCode.UP:case a.ui.keyCode.RIGHT:if(g===b._valueMax())return;h=b._trimAlignValue(g+i);break;case a.ui.keyCode.DOWN:case a.ui.keyCode.LEFT:if(g===b._valueMin())return;h=b._trimAlignValue(g-i)}b._slide(d,e,h)}).keyup(function(c){var d=a(this).data("index.ui-slider-handle");b._keySliding&&(b._keySliding=!1,b._stop(c,d),b._change(c,d),a(this).removeClass("ui-state-active"))}),this._refreshValue(),this._animateOff=!1},destroy:function(){return this.handles.remove(),this.range.remove(),this.element.removeClass("ui-slider ui-slider-horizontal ui-slider-vertical ui-slider-disabled ui-widget ui-widget-content ui-corner-all").removeData("slider").unbind(".slider"),this._mouseDestroy(),this},_mouseCapture:function(b){var c=this.options,d,e,f,g,h,i,j,k,l;return c.disabled?!1:(this.elementSize={width:this.element.outerWidth(),height:this.element.outerHeight()},this.elementOffset=this.element.offset(),d={x:b.pageX,y:b.pageY},e=this._normValueFromMouse(d),f=this._valueMax()-this._valueMin()+1,h=this,this.handles.each(function(b){var c=Math.abs(e-h.values(b));f>c&&(f=c,g=a(this),i=b)}),c.range===!0&&this.values(1)===c.min&&(i+=1,g=a(this.handles[i])),j=this._start(b,i),j===!1?!1:(this._mouseSliding=!0,h._handleIndex=i,g.addClass("ui-state-active").focus(),k=g.offset(),l=!a(b.target).parents().andSelf().is(".ui-slider-handle"),this._clickOffset=l?{left:0,top:0}:{left:b.pageX-k.left-g.width()/2,top:b.pageY-k.top-g.height()/2-(parseInt(g.css("borderTopWidth"),10)||0)-(parseInt(g.css("borderBottomWidth"),10)||0)+(parseInt(g.css("marginTop"),10)||0)},this.handles.hasClass("ui-state-hover")||this._slide(b,i,e),this._animateOff=!0,!0))},_mouseStart:function(a){return!0},_mouseDrag:function(a){var b={x:a.pageX,y:a.pageY},c=this._normValueFromMouse(b);return this._slide(a,this._handleIndex,c),!1},_mouseStop:function(a){return this.handles.removeClass("ui-state-active"),this._mouseSliding=!1,this._stop(a,this._handleIndex),this._change(a,this._handleIndex),this._handleIndex=null,this._clickOffset=null,this._animateOff=!1,!1},_detectOrientation:function(){this.orientation=this.options.orientation==="vertical"?"vertical":"horizontal"},_normValueFromMouse:function(a){var b,c,d,e,f;return this.orientation==="horizontal"?(b=this.elementSize.width,c=a.x-this.elementOffset.left-(this._clickOffset?this._clickOffset.left:0)):(b=this.elementSize.height,c=a.y-this.elementOffset.top-(this._clickOffset?this._clickOffset.top:0)),d=c/b,d>1&&(d=1),d<0&&(d=0),this.orientation==="vertical"&&(d=1-d),e=this._valueMax()-this._valueMin(),f=this._valueMin()+d*e,this._trimAlignValue(f)},_start:function(a,b){var c={handle:this.handles[b],value:this.value()};return this.options.values&&this.options.values.length&&(c.value=this.values(b),c.values=this.values()),this._trigger("start",a,c)},_slide:function(a,b,c){var d,e,f;this.options.values&&this.options.values.length?(d=this.values(b?0:1),this.options.values.length===2&&this.options.range===!0&&(b===0&&c>d||b===1&&c<d)&&(c=d),c!==this.values(b)&&(e=this.values(),e[b]=c,f=this._trigger("slide",a,{handle:this.handles[b],value:c,values:e}),d=this.values(b?0:1),f!==!1&&this.values(b,c,!0))):c!==this.value()&&(f=this._trigger("slide",a,{handle:this.handles[b],value:c}),f!==!1&&this.value(c))},_stop:function(a,b){var c={handle:this.handles[b],value:this.value()};this.options.values&&this.options.values.length&&(c.value=this.values(b),c.values=this.values()),this._trigger("stop",a,c)},_change:function(a,b){if(!this._keySliding&&!this._mouseSliding){var c={handle:this.handles[b],value:this.value()};this.options.values&&this.options.values.length&&(c.value=this.values(b),c.values=this.values()),this._trigger("change",a,c)}},value:function(a){if(arguments.length){this.options.value=this._trimAlignValue(a),this._refreshValue(),this._change(null,0);return}return this._value()},values:function(b,c){var d,e,f;if(arguments.length>1){this.options.values[b]=this._trimAlignValue(c),this._refreshValue(),this._change(null,b);return}if(!arguments.length)return this._values();if(!a.isArray(arguments[0]))return this.options.values&&this.options.values.length?this._values(b):this.value();d=this.options.values,e=arguments[0];for(f=0;f<d.length;f+=1)d[f]=this._trimAlignValue(e[f]),this._change(null,f);this._refreshValue()},_setOption:function(b,c){var d,e=0;a.isArray(this.options.values)&&(e=this.options.values.length),a.Widget.prototype._setOption.apply(this,arguments);switch(b){case"disabled":c?(this.handles.filter(".ui-state-focus").blur(),this.handles.removeClass("ui-state-hover"),this.handles.propAttr("disabled",!0),this.element.addClass("ui-disabled")):(this.handles.propAttr("disabled",!1),this.element.removeClass("ui-disabled"));break;case"orientation":this._detectOrientation(),this.element.removeClass("ui-slider-horizontal ui-slider-vertical").addClass("ui-slider-"+this.orientation),this._refreshValue();break;case"value":this._animateOff=!0,this._refreshValue(),this._change(null,0),this._animateOff=!1;break;case"values":this._animateOff=!0,this._refreshValue();for(d=0;d<e;d+=1)this._change(null,d);this._animateOff=!1}},_value:function(){var a=this.options.value;return a=this._trimAlignValue(a),a},_values:function(a){var b,c,d;if(arguments.length)return b=this.options.values[a],b=this._trimAlignValue(b),b;c=this.options.values.slice();for(d=0;d<c.length;d+=1)c[d]=this._trimAlignValue(c[d]);return c},_trimAlignValue:function(a){if(a<=this._valueMin())return this._valueMin();if(a>=this._valueMax())return this._valueMax();var b=this.options.step>0?this.options.step:1,c=(a-this._valueMin())%b,d=a-c;return Math.abs(c)*2>=b&&(d+=c>0?b:-b),parseFloat(d.toFixed(5))},_valueMin:function(){return this.options.min},_valueMax:function(){return this.options.max},_refreshValue:function(){var b=this.options.range,c=this.options,d=this,e=this._animateOff?!1:c.animate,f,g={},h,i,j,k;this.options.values&&this.options.values.length?this.handles.each(function(b,i){f=(d.values(b)-d._valueMin())/(d._valueMax()-d._valueMin())*100,g[d.orientation==="horizontal"?"left":"bottom"]=f+"%",a(this).stop(1,1)[e?"animate":"css"](g,c.animate),d.options.range===!0&&(d.orientation==="horizontal"?(b===0&&d.range.stop(1,1)[e?"animate":"css"]({left:f+"%"},c.animate),b===1&&d.range[e?"animate":"css"]({width:f-h+"%"},{queue:!1,duration:c.animate})):(b===0&&d.range.stop(1,1)[e?"animate":"css"]({bottom:f+"%"},c.animate),b===1&&d.range[e?"animate":"css"]({height:f-h+"%"},{queue:!1,duration:c.animate}))),h=f}):(i=this.value(),j=this._valueMin(),k=this._valueMax(),f=k!==j?(i-j)/(k-j)*100:0,g[d.orientation==="horizontal"?"left":"bottom"]=f+"%",this.handle.stop(1,1)[e?"animate":"css"](g,c.animate),b==="min"&&this.orientation==="horizontal"&&this.range.stop(1,1)[e?"animate":"css"]({width:f+"%"},c.animate),b==="max"&&this.orientation==="horizontal"&&this.range[e?"animate":"css"]({width:100-f+"%"},{queue:!1,duration:c.animate}),b==="min"&&this.orientation==="vertical"&&this.range.stop(1,1)[e?"animate":"css"]({height:f+"%"},c.animate),b==="max"&&this.orientation==="vertical"&&this.range[e?"animate":"css"]({height:100-f+"%"},{queue:!1,duration:c.animate}))}}),a.extend(a.ui.slider,{version:"1.8.24"})})(jQuery);;
\ No newline at end of file
diff --git a/v3/js/jquery.ba-bbq.min.js b/v3/js/jquery.ba-bbq.min.js
new file mode 100644
index 000000000..bcbf24834
--- /dev/null
+++ b/v3/js/jquery.ba-bbq.min.js
@@ -0,0 +1,18 @@
+/*
+ * jQuery BBQ: Back Button & Query Library - v1.2.1 - 2/17/2010
+ * http://benalman.com/projects/jquery-bbq-plugin/
+ * 
+ * Copyright (c) 2010 "Cowboy" Ben Alman
+ * Dual licensed under the MIT and GPL licenses.
+ * http://benalman.com/about/license/
+ */
+(function($,p){var i,m=Array.prototype.slice,r=decodeURIComponent,a=$.param,c,l,v,b=$.bbq=$.bbq||{},q,u,j,e=$.event.special,d="hashchange",A="querystring",D="fragment",y="elemUrlAttr",g="location",k="href",t="src",x=/^.*\?|#.*$/g,w=/^.*\#/,h,C={};function E(F){return typeof F==="string"}function B(G){var F=m.call(arguments,1);return function(){return G.apply(this,F.concat(m.call(arguments)))}}function n(F){return F.replace(/^[^#]*#?(.*)$/,"$1")}function o(F){return F.replace(/(?:^[^?#]*\?([^#]*).*$)?.*/,"$1")}function f(H,M,F,I,G){var O,L,K,N,J;if(I!==i){K=F.match(H?/^([^#]*)\#?(.*)$/:/^([^#?]*)\??([^#]*)(#?.*)/);J=K[3]||"";if(G===2&&E(I)){L=I.replace(H?w:x,"")}else{N=l(K[2]);I=E(I)?l[H?D:A](I):I;L=G===2?I:G===1?$.extend({},I,N):$.extend({},N,I);L=a(L);if(H){L=L.replace(h,r)}}O=K[1]+(H?"#":L||!K[1]?"?":"")+L+J}else{O=M(F!==i?F:p[g][k])}return O}a[A]=B(f,0,o);a[D]=c=B(f,1,n);c.noEscape=function(G){G=G||"";var F=$.map(G.split(""),encodeURIComponent);h=new RegExp(F.join("|"),"g")};c.noEscape(",/");$.deparam=l=function(I,F){var H={},G={"true":!0,"false":!1,"null":null};$.each(I.replace(/\+/g," ").split("&"),function(L,Q){var K=Q.split("="),P=r(K[0]),J,O=H,M=0,R=P.split("]["),N=R.length-1;if(/\[/.test(R[0])&&/\]$/.test(R[N])){R[N]=R[N].replace(/\]$/,"");R=R.shift().split("[").concat(R);N=R.length-1}else{N=0}if(K.length===2){J=r(K[1]);if(F){J=J&&!isNaN(J)?+J:J==="undefined"?i:G[J]!==i?G[J]:J}if(N){for(;M<=N;M++){P=R[M]===""?O.length:R[M];O=O[P]=M<N?O[P]||(R[M+1]&&isNaN(R[M+1])?{}:[]):J}}else{if($.isArray(H[P])){H[P].push(J)}else{if(H[P]!==i){H[P]=[H[P],J]}else{H[P]=J}}}}else{if(P){H[P]=F?i:""}}});return H};function z(H,F,G){if(F===i||typeof F==="boolean"){G=F;F=a[H?D:A]()}else{F=E(F)?F.replace(H?w:x,""):F}return l(F,G)}l[A]=B(z,0);l[D]=v=B(z,1);$[y]||($[y]=function(F){return $.extend(C,F)})({a:k,base:k,iframe:t,img:t,input:t,form:"action",link:k,script:t});j=$[y];function s(I,G,H,F){if(!E(H)&&typeof H!=="object"){F=H;H=G;G=i}return this.each(function(){var L=$(this),J=G||j()[(this.nodeName||"").toLowerCase()]||"",K=J&&L.attr(J)||"";L.attr(J,a[I](K,H,F))})}$.fn[A]=B(s,A);$.fn[D]=B(s,D);b.pushState=q=function(I,F){if(E(I)&&/^#/.test(I)&&F===i){F=2}var H=I!==i,G=c(p[g][k],H?I:{},H?F:2);p[g][k]=G+(/#/.test(G)?"":"#")};b.getState=u=function(F,G){return F===i||typeof F==="boolean"?v(F):v(G)[F]};b.removeState=function(F){var G={};if(F!==i){G=u();$.each($.isArray(F)?F:arguments,function(I,H){delete G[H]})}q(G,2)};e[d]=$.extend(e[d],{add:function(F){var H;function G(J){var I=J[D]=c();J.getState=function(K,L){return K===i||typeof K==="boolean"?l(I,K):l(I,L)[K]};H.apply(this,arguments)}if($.isFunction(F)){H=F;return G}else{H=F.handler;F.handler=G}}})})(jQuery,this);
+/*
+ * jQuery hashchange event - v1.2 - 2/11/2010
+ * http://benalman.com/projects/jquery-hashchange-plugin/
+ * 
+ * Copyright (c) 2010 "Cowboy" Ben Alman
+ * Dual licensed under the MIT and GPL licenses.
+ * http://benalman.com/about/license/
+ */
+(function($,i,b){var j,k=$.event.special,c="location",d="hashchange",l="href",f=$.browser,g=document.documentMode,h=f.msie&&(g===b||g<8),e="on"+d in i&&!h;function a(m){m=m||i[c][l];return m.replace(/^[^#]*#?(.*)$/,"$1")}$[d+"Delay"]=100;k[d]=$.extend(k[d],{setup:function(){if(e){return false}$(j.start)},teardown:function(){if(e){return false}$(j.stop)}});j=(function(){var m={},r,n,o,q;function p(){o=q=function(s){return s};if(h){n=$('<iframe src="javascript:0"/>').hide().insertAfter("body")[0].contentWindow;q=function(){return a(n.document[c][l])};o=function(u,s){if(u!==s){var t=n.document;t.open().close();t[c].hash="#"+u}};o(a())}}m.start=function(){if(r){return}var t=a();o||p();(function s(){var v=a(),u=q(t);if(v!==t){o(t=v,u);$(i).trigger(d)}else{if(u!==t){i[c][l]=i[c][l].replace(/#.*/,"")+"#"+u}}r=setTimeout(s,$[d+"Delay"])})()};m.stop=function(){if(!n){r&&clearTimeout(r);r=0}};return m})()})(jQuery,this);
\ No newline at end of file
diff --git a/v3/js/jquery.ba-dotimeout.min.js b/v3/js/jquery.ba-dotimeout.min.js
new file mode 100644
index 000000000..02d9349c2
--- /dev/null
+++ b/v3/js/jquery.ba-dotimeout.min.js
@@ -0,0 +1,9 @@
+/*
+ * jQuery doTimeout: Like setTimeout, but better! - v1.0 - 3/3/2010
+ * http://benalman.com/projects/jquery-dotimeout-plugin/
+ * 
+ * Copyright (c) 2010 "Cowboy" Ben Alman
+ * Dual licensed under the MIT and GPL licenses.
+ * http://benalman.com/about/license/
+ */
+(function($){var a={},c="doTimeout",d=Array.prototype.slice;$[c]=function(){return b.apply(window,[0].concat(d.call(arguments)))};$.fn[c]=function(){var f=d.call(arguments),e=b.apply(this,[c+f[0]].concat(f));return typeof f[0]==="number"||typeof f[1]==="number"?this:e};function b(l){var m=this,h,k={},g=l?$.fn:$,n=arguments,i=4,f=n[1],j=n[2],p=n[3];if(typeof f!=="string"){i--;f=l=0;j=n[1];p=n[2]}if(l){h=m.eq(0);h.data(l,k=h.data(l)||{})}else{if(f){k=a[f]||(a[f]={})}}k.id&&clearTimeout(k.id);delete k.id;function e(){if(l){h.removeData(l)}else{if(f){delete a[f]}}}function o(){k.id=setTimeout(function(){k.fn()},j)}if(p){k.fn=function(q){if(typeof p==="string"){p=g[p]}p.apply(m,d.call(n,i))===true&&!q?o():e()};o()}else{if(k.fn){j===undefined?e():k.fn(j===false);return true}else{e()}}}})(jQuery);
\ No newline at end of file
diff --git a/v3/js/jquery.corner.js b/v3/js/jquery.corner.js
new file mode 100644
index 000000000..c416613fd
--- /dev/null
+++ b/v3/js/jquery.corner.js
@@ -0,0 +1,249 @@
+/*!
+ * jQuery corner plugin: simple corner rounding
+ * Examples and documentation at: http://jquery.malsup.com/corner/
+ * version 2.12 (23-MAY-2011)
+ * Requires jQuery v1.3.2 or later
+ * Dual licensed under the MIT and GPL licenses:
+ * http://www.opensource.org/licenses/mit-license.php
+ * http://www.gnu.org/licenses/gpl.html
+ * Authors: Dave Methvin and Mike Alsup
+ */
+
+/**
+ *  corner() takes a single string argument:  $('#myDiv').corner("effect corners width")
+ *
+ *  effect:  name of the effect to apply, such as round, bevel, notch, bite, etc (default is round). 
+ *  corners: one or more of: top, bottom, tr, tl, br, or bl.  (default is all corners)
+ *  width:   width of the effect; in the case of rounded corners this is the radius. 
+ *           specify this value using the px suffix such as 10px (yes, it must be pixels).
+ */
+;(function($) { 
+
+var style = document.createElement('div').style,
+    moz = style['MozBorderRadius'] !== undefined,
+    webkit = style['WebkitBorderRadius'] !== undefined,
+    radius = style['borderRadius'] !== undefined || style['BorderRadius'] !== undefined,
+    mode = document.documentMode || 0,
+    noBottomFold = $.browser.msie && (($.browser.version < 8 && !mode) || mode < 8),
+
+    expr = $.browser.msie && (function() {
+        var div = document.createElement('div');
+        try { div.style.setExpression('width','0+0'); div.style.removeExpression('width'); }
+        catch(e) { return false; }
+        return true;
+    })();
+
+$.support = $.support || {};
+$.support.borderRadius = moz || webkit || radius; // so you can do:  if (!$.support.borderRadius) $('#myDiv').corner();
+
+function sz(el, p) { 
+    return parseInt($.css(el,p))||0; 
+};
+function hex2(s) {
+    s = parseInt(s).toString(16);
+    return ( s.length < 2 ) ? '0'+s : s;
+};
+function gpc(node) {
+    while(node) {
+        var v = $.css(node,'backgroundColor'), rgb;
+        if (v && v != 'transparent' && v != 'rgba(0, 0, 0, 0)') {
+            if (v.indexOf('rgb') >= 0) { 
+                rgb = v.match(/\d+/g); 
+                return '#'+ hex2(rgb[0]) + hex2(rgb[1]) + hex2(rgb[2]);
+            }
+            return v;
+        }
+        if (node.nodeName.toLowerCase() == 'html')
+            break;
+        node = node.parentNode; // keep walking if transparent
+    }
+    return '#ffffff';
+};
+
+function getWidth(fx, i, width) {
+    switch(fx) {
+    case 'round':  return Math.round(width*(1-Math.cos(Math.asin(i/width))));
+    case 'cool':   return Math.round(width*(1+Math.cos(Math.asin(i/width))));
+    case 'sharp':  return width-i;
+    case 'bite':   return Math.round(width*(Math.cos(Math.asin((width-i-1)/width))));
+    case 'slide':  return Math.round(width*(Math.atan2(i,width/i)));
+    case 'jut':    return Math.round(width*(Math.atan2(width,(width-i-1))));
+    case 'curl':   return Math.round(width*(Math.atan(i)));
+    case 'tear':   return Math.round(width*(Math.cos(i)));
+    case 'wicked': return Math.round(width*(Math.tan(i)));
+    case 'long':   return Math.round(width*(Math.sqrt(i)));
+    case 'sculpt': return Math.round(width*(Math.log((width-i-1),width)));
+    case 'dogfold':
+    case 'dog':    return (i&1) ? (i+1) : width;
+    case 'dog2':   return (i&2) ? (i+1) : width;
+    case 'dog3':   return (i&3) ? (i+1) : width;
+    case 'fray':   return (i%2)*width;
+    case 'notch':  return width; 
+    case 'bevelfold':
+    case 'bevel':  return i+1;
+    case 'steep':  return i/2 + 1;
+    case 'invsteep':return (width-i)/2+1;
+    }
+};
+
+$.fn.corner = function(options) {
+    // in 1.3+ we can fix mistakes with the ready state
+    if (this.length == 0) {
+        if (!$.isReady && this.selector) {
+            var s = this.selector, c = this.context;
+            $(function() {
+                $(s,c).corner(options);
+            });
+        }
+        return this;
+    }
+
+    return this.each(function(index){
+        var $this = $(this),
+            // meta values override options
+            o = [$this.attr($.fn.corner.defaults.metaAttr) || '', options || ''].join(' ').toLowerCase(),
+            keep = /keep/.test(o),                       // keep borders?
+            cc = ((o.match(/cc:(#[0-9a-f]+)/)||[])[1]),  // corner color
+            sc = ((o.match(/sc:(#[0-9a-f]+)/)||[])[1]),  // strip color
+            width = parseInt((o.match(/(\d+)px/)||[])[1]) || 10, // corner width
+            re = /round|bevelfold|bevel|notch|bite|cool|sharp|slide|jut|curl|tear|fray|wicked|sculpt|long|dog3|dog2|dogfold|dog|invsteep|steep/,
+            fx = ((o.match(re)||['round'])[0]),
+            fold = /dogfold|bevelfold/.test(o),
+            edges = { T:0, B:1 },
+            opts = {
+                TL:  /top|tl|left/.test(o),       TR:  /top|tr|right/.test(o),
+                BL:  /bottom|bl|left/.test(o),    BR:  /bottom|br|right/.test(o)
+            },
+            // vars used in func later
+            strip, pad, cssHeight, j, bot, d, ds, bw, i, w, e, c, common, $horz;
+        
+        if ( !opts.TL && !opts.TR && !opts.BL && !opts.BR )
+            opts = { TL:1, TR:1, BL:1, BR:1 };
+            
+        // support native rounding
+        if ($.fn.corner.defaults.useNative && fx == 'round' && (radius || moz || webkit) && !cc && !sc) {
+            if (opts.TL)
+                $this.css(radius ? 'border-top-left-radius' : moz ? '-moz-border-radius-topleft' : '-webkit-border-top-left-radius', width + 'px');
+            if (opts.TR)
+                $this.css(radius ? 'border-top-right-radius' : moz ? '-moz-border-radius-topright' : '-webkit-border-top-right-radius', width + 'px');
+            if (opts.BL)
+                $this.css(radius ? 'border-bottom-left-radius' : moz ? '-moz-border-radius-bottomleft' : '-webkit-border-bottom-left-radius', width + 'px');
+            if (opts.BR)
+                $this.css(radius ? 'border-bottom-right-radius' : moz ? '-moz-border-radius-bottomright' : '-webkit-border-bottom-right-radius', width + 'px');
+            return;
+        }
+            
+        strip = document.createElement('div');
+        $(strip).css({
+            overflow: 'hidden',
+            height: '1px',
+            minHeight: '1px',
+            fontSize: '1px',
+            backgroundColor: sc || 'transparent',
+            borderStyle: 'solid'
+        });
+    
+        pad = {
+            T: parseInt($.css(this,'paddingTop'))||0,     R: parseInt($.css(this,'paddingRight'))||0,
+            B: parseInt($.css(this,'paddingBottom'))||0,  L: parseInt($.css(this,'paddingLeft'))||0
+        };
+
+        if (typeof this.style.zoom != undefined) this.style.zoom = 1; // force 'hasLayout' in IE
+        if (!keep) this.style.border = 'none';
+        strip.style.borderColor = cc || gpc(this.parentNode);
+        cssHeight = $(this).outerHeight();
+
+        for (j in edges) {
+            bot = edges[j];
+            // only add stips if needed
+            if ((bot && (opts.BL || opts.BR)) || (!bot && (opts.TL || opts.TR))) {
+                strip.style.borderStyle = 'none '+(opts[j+'R']?'solid':'none')+' none '+(opts[j+'L']?'solid':'none');
+                d = document.createElement('div');
+                $(d).addClass('jquery-corner');
+                ds = d.style;
+
+                bot ? this.appendChild(d) : this.insertBefore(d, this.firstChild);
+
+                if (bot && cssHeight != 'auto') {
+                    if ($.css(this,'position') == 'static')
+                        this.style.position = 'relative';
+                    ds.position = 'absolute';
+                    ds.bottom = ds.left = ds.padding = ds.margin = '0';
+                    if (expr)
+                        ds.setExpression('width', 'this.parentNode.offsetWidth');
+                    else
+                        ds.width = '100%';
+                }
+                else if (!bot && $.browser.msie) {
+                    if ($.css(this,'position') == 'static')
+                        this.style.position = 'relative';
+                    ds.position = 'absolute';
+                    ds.top = ds.left = ds.right = ds.padding = ds.margin = '0';
+                    
+                    // fix ie6 problem when blocked element has a border width
+                    if (expr) {
+                        bw = sz(this,'borderLeftWidth') + sz(this,'borderRightWidth');
+                        ds.setExpression('width', 'this.parentNode.offsetWidth - '+bw+'+ "px"');
+                    }
+                    else
+                        ds.width = '100%';
+                }
+                else {
+                    ds.position = 'relative';
+                    ds.margin = !bot ? '-'+pad.T+'px -'+pad.R+'px '+(pad.T-width)+'px -'+pad.L+'px' : 
+                                        (pad.B-width)+'px -'+pad.R+'px -'+pad.B+'px -'+pad.L+'px';                
+                }
+
+                for (i=0; i < width; i++) {
+                    w = Math.max(0,getWidth(fx,i, width));
+                    e = strip.cloneNode(false);
+                    e.style.borderWidth = '0 '+(opts[j+'R']?w:0)+'px 0 '+(opts[j+'L']?w:0)+'px';
+                    bot ? d.appendChild(e) : d.insertBefore(e, d.firstChild);
+                }
+                
+                if (fold && $.support.boxModel) {
+                    if (bot && noBottomFold) continue;
+                    for (c in opts) {
+                        if (!opts[c]) continue;
+                        if (bot && (c == 'TL' || c == 'TR')) continue;
+                        if (!bot && (c == 'BL' || c == 'BR')) continue;
+                        
+                        common = { position: 'absolute', border: 'none', margin: 0, padding: 0, overflow: 'hidden', backgroundColor: strip.style.borderColor };
+                        $horz = $('<div/>').css(common).css({ width: width + 'px', height: '1px' });
+                        switch(c) {
+                        case 'TL': $horz.css({ bottom: 0, left: 0 }); break;
+                        case 'TR': $horz.css({ bottom: 0, right: 0 }); break;
+                        case 'BL': $horz.css({ top: 0, left: 0 }); break;
+                        case 'BR': $horz.css({ top: 0, right: 0 }); break;
+                        }
+                        d.appendChild($horz[0]);
+                        
+                        var $vert = $('<div/>').css(common).css({ top: 0, bottom: 0, width: '1px', height: width + 'px' });
+                        switch(c) {
+                        case 'TL': $vert.css({ left: width }); break;
+                        case 'TR': $vert.css({ right: width }); break;
+                        case 'BL': $vert.css({ left: width }); break;
+                        case 'BR': $vert.css({ right: width }); break;
+                        }
+                        d.appendChild($vert[0]);
+                    }
+                }
+            }
+        }
+    });
+};
+
+$.fn.uncorner = function() { 
+    if (radius || moz || webkit)
+        this.css(radius ? 'border-radius' : moz ? '-moz-border-radius' : '-webkit-border-radius', 0);
+    $('div.jquery-corner', this).remove();
+    return this;
+};
+
+// expose options
+$.fn.corner.defaults = {
+    useNative: true, // true if plugin should attempt to use native browser support for border radius rounding
+    metaAttr:  'data-corner' // name of meta attribute to use for options
+};
+    
+})(jQuery);
diff --git a/v3/js/jquery.jsPlumb-1.3.10-all-min.js b/v3/js/jquery.jsPlumb-1.3.10-all-min.js
new file mode 100644
index 000000000..3171abe1b
--- /dev/null
+++ b/v3/js/jquery.jsPlumb-1.3.10-all-min.js
@@ -0,0 +1 @@
+jsPlumbUtil={isArray:function(b){return Object.prototype.toString.call(b)==="[object Array]"},isString:function(a){return typeof a==="string"},isObject:function(a){return Object.prototype.toString.call(a)==="[object Object]"},convertStyle:function(b,a){if("transparent"===b){return b}var g=b,f=function(h){return h.length==1?"0"+h:h},c=function(h){return f(Number(h).toString(16))},d=/(rgb[a]?\()(.*)(\))/;if(b.match(d)){var e=b.match(d)[2].split(",");g="#"+c(e[0])+c(e[1])+c(e[2]);if(!a&&e.length==4){g=g+c(e[3])}}return g},gradient:function(b,a){b=jsPlumbUtil.isArray(b)?b:[b.x,b.y];a=jsPlumbUtil.isArray(a)?a:[a.x,a.y];return(a[1]-b[1])/(a[0]-b[0])},normal:function(b,a){return -1/jsPlumbUtil.gradient(b,a)},lineLength:function(b,a){b=jsPlumbUtil.isArray(b)?b:[b.x,b.y];a=jsPlumbUtil.isArray(a)?a:[a.x,a.y];return Math.sqrt(Math.pow(a[1]-b[1],2)+Math.pow(a[0]-b[0],2))},segment:function(b,a){b=jsPlumbUtil.isArray(b)?b:[b.x,b.y];a=jsPlumbUtil.isArray(a)?a:[a.x,a.y];if(a[0]>b[0]){return(a[1]>b[1])?2:1}else{return(a[1]>b[1])?3:4}},intersects:function(f,e){var c=f.x,a=f.x+f.w,k=f.y,h=f.y+f.h,d=e.x,b=e.x+e.w,i=e.y,g=e.y+e.h;return((c<=d&&d<=a)&&(k<=i&&i<=h))||((c<=b&&b<=a)&&(k<=i&&i<=h))||((c<=d&&d<=a)&&(k<=g&&g<=h))||((c<=b&&d<=a)&&(k<=g&&g<=h))||((d<=c&&c<=b)&&(i<=k&&k<=g))||((d<=a&&a<=b)&&(i<=k&&k<=g))||((d<=c&&c<=b)&&(i<=h&&h<=g))||((d<=a&&c<=b)&&(i<=h&&h<=g))},segmentMultipliers:[null,[1,-1],[1,1],[-1,1],[-1,-1]],inverseSegmentMultipliers:[null,[-1,-1],[-1,1],[1,1],[1,-1]],pointOnLine:function(a,e,b){var d=jsPlumbUtil.gradient(a,e),i=jsPlumbUtil.segment(a,e),h=b>0?jsPlumbUtil.segmentMultipliers[i]:jsPlumbUtil.inverseSegmentMultipliers[i],c=Math.atan(d),f=Math.abs(b*Math.sin(c))*h[1],g=Math.abs(b*Math.cos(c))*h[0];return{x:a.x+g,y:a.y+f}},perpendicularLineTo:function(c,d,e){var b=jsPlumbUtil.gradient(c,d),f=Math.atan(-1/b),g=e/2*Math.sin(f),a=e/2*Math.cos(f);return[{x:d.x+a,y:d.y+g},{x:d.x-a,y:d.y-g}]},findWithFunction:function(b,d){if(b){for(var c=0;c<b.length;c++){if(d(b[c])){return c}}}return -1},indexOf:function(a,b){return jsPlumbUtil.findWithFunction(a,function(c){return c==b})},removeWithFunction:function(c,d){var b=jsPlumbUtil.findWithFunction(c,d);if(b>-1){c.splice(b,1)}return b!=-1},remove:function(b,c){var a=jsPlumbUtil.indexOf(b,c);if(a>-1){b.splice(a,1)}return a!=-1},addWithFunction:function(c,b,a){if(jsPlumbUtil.findWithFunction(c,a)==-1){c.push(b)}},addToList:function(d,b,c){var a=d[b];if(a==null){a=[],d[b]=a}a.push(c);return a},EventGenerator:function(){var c={},b=this;var a=["ready"];this.bind=function(d,e){jsPlumbUtil.addToList(c,d,e);return b};this.fire=function(g,h,d){if(c[g]){for(var f=0;f<c[g].length;f++){if(jsPlumbUtil.findWithFunction(a,function(i){return i===g})!=-1){c[g][f](h,d)}else{try{c[g][f](h,d)}catch(k){jsPlumbUtil.log("jsPlumb: fire failed for event "+g+" : "+k)}}}}return b};this.unbind=function(d){if(d){delete c[d]}else{delete c;c={}}return b};this.getListener=function(d){return c[d]}},logEnabled:true,log:function(){if(jsPlumbUtil.logEnabled&&typeof console!="undefined"){try{var b=arguments[arguments.length-1];console.log(b)}catch(a){}}},group:function(a){if(jsPlumbUtil.logEnabled&&typeof console!="undefined"){console.group(a)}},groupEnd:function(a){if(jsPlumbUtil.logEnabled&&typeof console!="undefined"){console.groupEnd(a)}},time:function(a){if(jsPlumbUtil.logEnabled&&typeof console!="undefined"){console.time(a)}},timeEnd:function(a){if(jsPlumbUtil.logEnabled&&typeof console!="undefined"){console.timeEnd(a)}}};(function(){var A=!!document.createElement("canvas").getContext,e=!!window.SVGAngle||document.implementation.hasFeature("http://www.w3.org/TR/SVG11/feature#BasicStructure","1.1"),b=function(){if(b.vml==undefined){var L=document.body.appendChild(document.createElement("div"));L.innerHTML='<v:shape id="vml_flag1" adj="1" />';var K=L.firstChild;K.style.behavior="url(#default#VML)";b.vml=K?typeof K.adj=="object":true;L.parentNode.removeChild(L)}return b.vml};var i=jsPlumbUtil.findWithFunction,J=jsPlumbUtil.indexOf,D=jsPlumbUtil.removeWithFunction,m=jsPlumbUtil.remove,u=jsPlumbUtil.addWithFunction,l=jsPlumbUtil.addToList,n=jsPlumbUtil.isArray,C=jsPlumbUtil.isString,w=jsPlumbUtil.isObject;if(!window.console){window.console={time:function(){},timeEnd:function(){},group:function(){},groupEnd:function(){},log:function(){}}}var x=null,d=function(K,L){return p.CurrentLibrary.getAttribute(F(K),L)},f=function(L,M,K){p.CurrentLibrary.setAttribute(F(L),M,K)},B=function(L,K){p.CurrentLibrary.addClass(F(L),K)},k=function(L,K){return p.CurrentLibrary.hasClass(F(L),K)},o=function(L,K){p.CurrentLibrary.removeClass(F(L),K)},F=function(K){return p.CurrentLibrary.getElementObject(K)},t=function(K){return p.CurrentLibrary.getOffset(F(K))},a=function(K){return p.CurrentLibrary.getSize(F(K))},q=jsPlumbUtil.log,I=jsPlumbUtil.group,h=jsPlumbUtil.groupEnd,H=jsPlumbUtil.time,v=jsPlumbUtil.timeEnd,r=function(){return""+(new Date()).getTime()},E=function(Z){var U=this,aa=arguments,R=false,O=Z.parameters||{},M=U.idPrefix,W=M+(new Date()).getTime(),V=null,ab=null;U._jsPlumb=Z._jsPlumb;U.getId=function(){return W};U.tooltip=Z.tooltip;U.hoverClass=Z.hoverClass||U._jsPlumb.Defaults.HoverClass||p.Defaults.HoverClass;jsPlumbUtil.EventGenerator.apply(this);this.clone=function(){var ac=new Object();U.constructor.apply(ac,aa);return ac};this.getParameter=function(ac){return O[ac]},this.getParameters=function(){return O},this.setParameter=function(ac,ad){O[ac]=ad},this.setParameters=function(ac){O=ac},this.overlayPlacements=[];var N=Z.beforeDetach;this.isDetachAllowed=function(ac){var ad=U._jsPlumb.checkCondition("beforeDetach",ac);if(N){try{ad=N(ac)}catch(ae){q("jsPlumb: beforeDetach callback failed",ae)}}return ad};var Q=Z.beforeDrop;this.isDropAllowed=function(ah,ae,af,ac,ad){var ag=U._jsPlumb.checkCondition("beforeDrop",{sourceId:ah,targetId:ae,scope:af,connection:ac,dropEndpoint:ad});if(Q){try{ag=Q({sourceId:ah,targetId:ae,scope:af,connection:ac,dropEndpoint:ad})}catch(ai){q("jsPlumb: beforeDrop callback failed",ai)}}return ag};var X=function(){if(V&&ab){var ac={};p.extend(ac,V);p.extend(ac,ab);delete U.hoverPaintStyle;if(ac.gradient&&V.fillStyle){delete ac.gradient}ab=ac}};this.setPaintStyle=function(ac,ad){V=ac;U.paintStyleInUse=V;X();if(!ad){U.repaint()}};this.getPaintStyle=function(){return V};this.setHoverPaintStyle=function(ac,ad){ab=ac;X();if(!ad){U.repaint()}};this.getHoverPaintStyle=function(){return ab};this.setHover=function(ac,ae,ad){if(!U._jsPlumb.currentlyDragging&&!U._jsPlumb.isHoverSuspended()){R=ac;if(U.hoverClass!=null&&U.canvas!=null){if(ac){L.addClass(U.canvas,U.hoverClass)}else{L.removeClass(U.canvas,U.hoverClass)}}if(ab!=null){U.paintStyleInUse=ac?ab:V;ad=ad||r();U.repaint({timestamp:ad,recalc:false})}if(U.getAttachedElements&&!ae){Y(ac,r(),U)}}};this.isHover=function(){return R};var L=p.CurrentLibrary,K=["click","dblclick","mouseenter","mouseout","mousemove","mousedown","mouseup","contextmenu"],T={mouseout:"mouseexit"},P=function(ae,af,ad){var ac=T[ad]||ad;L.bind(ae,ad,function(ag){af.fire(ac,af,ag)})},S=function(ae,ad){var ac=T[ad]||ad;L.unbind(ae,ad)};this.attachListeners=function(ad,ae){for(var ac=0;ac<K.length;ac++){P(ad,ae,K[ac])}};var Y=function(ag,af,ac){var ae=U.getAttachedElements();if(ae){for(var ad=0;ad<ae.length;ad++){if(!ac||ac!=ae[ad]){ae[ad].setHover(ag,true,af)}}}};this.reattachListenersForElement=function(ad){if(arguments.length>1){for(var ac=0;ac<K.length;ac++){S(ad,K[ac])}for(var ac=1;ac<arguments.length;ac++){U.attachListeners(ad,arguments[ac])}}}},z=function(P){E.apply(this,arguments);var U=this;this.overlays=[];var N=function(Z){var X=null;if(n(Z)){var W=Z[0],Y=p.extend({component:U,_jsPlumb:U._jsPlumb},Z[1]);if(Z.length==3){p.extend(Y,Z[2])}X=new p.Overlays[U._jsPlumb.getRenderMode()][W](Y);if(Y.events){for(var V in Y.events){X.bind(V,Y.events[V])}}}else{if(Z.constructor==String){X=new p.Overlays[U._jsPlumb.getRenderMode()][Z]({component:U,_jsPlumb:U._jsPlumb})}else{X=Z}}U.overlays.push(X)},O=function(Z){var V=U.defaultOverlayKeys||[],Y=Z.overlays,W=function(aa){return U._jsPlumb.Defaults[aa]||p.Defaults[aa]||[]};if(!Y){Y=[]}for(var X=0;X<V.length;X++){Y.unshift.apply(Y,W(V[X]))}return Y};var L=O(P);if(L){for(var Q=0;Q<L.length;Q++){N(L[Q])}}var K=function(X){var V=-1;for(var W=0;W<U.overlays.length;W++){if(X===U.overlays[W].id){V=W;break}}return V};this.addOverlay=function(V){N(V);U.repaint()};this.getOverlay=function(W){var V=K(W);return V>=0?U.overlays[V]:null};this.getOverlays=function(){return U.overlays};this.hideOverlay=function(W){var V=U.getOverlay(W);if(V){V.hide()}};this.hideOverlays=function(){for(var V=0;V<U.overlays.length;V++){U.overlays[V].hide()}};this.showOverlay=function(W){var V=U.getOverlay(W);if(V){V.show()}};this.showOverlays=function(){for(var V=0;V<U.overlays.length;V++){U.overlays[V].show()}};this.removeAllOverlays=function(){for(var V in U.overlays){U.overlays[V].cleanup()}U.overlays.splice(0,U.overlays.length);U.repaint()};this.removeOverlay=function(W){var V=K(W);if(V!=-1){var X=U.overlays[V];X.cleanup();U.overlays.splice(V,1)}};this.removeOverlays=function(){for(var V=0;V<arguments.length;V++){U.removeOverlay(arguments[V])}};var M="__label",T=function(X){var V={cssClass:X.cssClass,labelStyle:this.labelStyle,id:M,component:U,_jsPlumb:U._jsPlumb},W=p.extend(V,X);return new p.Overlays[U._jsPlumb.getRenderMode()].Label(W)};if(P.label){var R=P.labelLocation||U.defaultLabelLocation||0.5,S=P.labelStyle||U._jsPlumb.Defaults.LabelStyle||p.Defaults.LabelStyle;this.overlays.push(T({label:P.label,location:R,labelStyle:S}))}this.setLabel=function(V){var W=U.getOverlay(M);if(!W){var X=V.constructor==String||V.constructor==Function?{label:V}:V;W=T(X);this.overlays.push(W)}else{if(V.constructor==String||V.constructor==Function){W.setLabel(V)}else{if(V.label){W.setLabel(V.label)}if(V.location){W.setLocation(V.location)}}}U.repaint()};this.getLabel=function(){var V=U.getOverlay(M);return V!=null?V.getLabel():null};this.getLabelOverlay=function(){return U.getOverlay(M)}},G=function(M,K,L){M.bind("click",function(N,O){K.fire("click",K,O)});M.bind("dblclick",function(N,O){K.fire("dblclick",K,O)});M.bind("contextmenu",function(N,O){K.fire("contextmenu",K,O)});M.bind("mouseenter",function(N,O){if(!K.isHover()){L(true);K.fire("mouseenter",K,O)}});M.bind("mouseexit",function(N,O){if(K.isHover()){L(false);K.fire("mouseexit",K,O)}})};var g=0,c=function(){var K=g+1;g++;return K};var y=function(L){this.Defaults={Anchor:"BottomCenter",Anchors:[null,null],ConnectionsDetachable:true,ConnectionOverlays:[],Connector:"Bezier",Container:null,DragOptions:{},DropOptions:{},Endpoint:"Dot",EndpointOverlays:[],Endpoints:[null,null],EndpointStyle:{fillStyle:"#456"},EndpointStyles:[null,null],EndpointHoverStyle:null,EndpointHoverStyles:[null,null],HoverPaintStyle:null,LabelStyle:{color:"black"},LogEnabled:false,Overlays:[],MaxConnections:1,PaintStyle:{lineWidth:8,strokeStyle:"#456"},RenderMode:"svg",Scope:"jsPlumb_DefaultScope"};if(L){p.extend(this.Defaults,L)}this.logEnabled=this.Defaults.LogEnabled;jsPlumbUtil.EventGenerator.apply(this);var bn=this,aL=c(),aO=bn.bind,aC={};for(var aB in this.Defaults){aC[aB]=this.Defaults[aB]}this.bind=function(bw,bv){if("ready"===bw&&M){bv()}else{aO.apply(bn,[bw,bv])}};bn.importDefaults=function(bw){for(var bv in bw){bn.Defaults[bv]=bw[bv]}};bn.restoreDefaults=function(){bn.Defaults=p.extend({},aC)};var P=null,ar=function(){p.repaintEverything()},bp=true,aP=function(){if(bp){ar()}},be=null,M=false,aY={},aT={},aU={},ah={},br={},bf={},bm={},bu=[],ae=[],Q=this.Defaults.Scope,X=null,V=function(by,bw,bx){var bv=by[bw];if(bv==null){bv=[];by[bw]=bv}bv.push(bx);return bv},aW=function(bw,bv){if(bn.Defaults.Container){p.CurrentLibrary.appendElement(bw,bn.Defaults.Container)}else{if(!bv){document.body.appendChild(bw)}else{p.CurrentLibrary.appendElement(bw,bv)}}},aD=1,ak=function(){return""+aD++},aI=function(bv){return bv._nodes?bv._nodes:bv},a6=false,bg=function(bw,bv){a6=bw;if(bv){bn.repaintEverything()}},ba=function(bx,bz,by){if(!a6){var bA=d(bx,"id"),bv=bn.dragManager.getElementsForDraggable(bA);if(by==null){by=r()}bn.anchorManager.redraw(bA,bz,by);if(bv){for(var bw in bv){bn.anchorManager.redraw(bv[bw].id,bz,by,bv[bw].offset)}}}},aG=function(bw,by){var bz=null;if(n(bw)){bz=[];for(var bv=0;bv<bw.length;bv++){var bx=F(bw[bv]),bA=d(bx,"id");bz.push(by(bx,bA))}}else{var bx=F(bw),bA=d(bx,"id");bz=by(bx,bA)}return bz},av=function(bv){return aU[bv]},bb=function(bz,bv,bC){var bE=bv==null?false:bv,bA=p.CurrentLibrary;if(bE){if(bA.isDragSupported(bz)&&!bA.isAlreadyDraggable(bz)){var bD=bC||bn.Defaults.DragOptions||p.Defaults.DragOptions;bD=p.extend({},bD);var bB=bA.dragEvents.drag,bw=bA.dragEvents.stop,by=bA.dragEvents.start;bD[by]=am(bD[by],function(){bn.setHoverSuspended(true)});bD[bB]=am(bD[bB],function(){var bF=bA.getUIPosition(arguments);ba(bz,bF);B(bz,"jsPlumb_dragged")});bD[bw]=am(bD[bw],function(){var bF=bA.getUIPosition(arguments);ba(bz,bF);o(bz,"jsPlumb_dragged");bn.setHoverSuspended(false)});var bx=K(bz);bm[bx]=true;var bE=bm[bx];bD.disabled=bE==null?false:!bE;bA.initDraggable(bz,bD,false);bn.dragManager.register(bz)}}},aA=function(bB,bw){var bv=p.extend({},bB);if(bw){p.extend(bv,bw)}if(bv.source&&bv.source.endpoint){bv.sourceEndpoint=bv.source}if(bv.source&&bv.target.endpoint){bv.targetEndpoint=bv.target}if(bB.uuids){bv.sourceEndpoint=av(bB.uuids[0]);bv.targetEndpoint=av(bB.uuids[1])}if(bv.sourceEndpoint&&bv.sourceEndpoint.isFull()){q(bn,"could not add connection; source endpoint is full");return}if(bv.targetEndpoint&&bv.targetEndpoint.isFull()){q(bn,"could not add connection; target endpoint is full");return}if(bv.sourceEndpoint&&bv.sourceEndpoint.connectorOverlays){bv.overlays=bv.overlays||[];for(var bz=0;bz<bv.sourceEndpoint.connectorOverlays.length;bz++){bv.overlays.push(bv.sourceEndpoint.connectorOverlays[bz])}}bv.tooltip=bB.tooltip;if(!bv.tooltip&&bv.sourceEndpoint&&bv.sourceEndpoint.connectorTooltip){bv.tooltip=bv.sourceEndpoint.connectorTooltip}if(bv.target&&!bv.target.endpoint&&!bv.targetEndpoint&&!bv.newConnection){var bA=K(bv.target),bC=aZ[bA],bx=aH[bA];if(bC){if(!aj[bA]){return}var by=bx!=null?bx:bn.addEndpoint(bv.target,bC);if(bh[bA]){aH[bA]=by}bv.targetEndpoint=by;by._makeTargetCreator=true}}if(bv.source&&!bv.source.endpoint&&!bv.sourceEndpoint&&!bv.newConnection){var bA=K(bv.source),bC=az[bA],bx=a5[bA];if(bC){if(!ac[bA]){return}var by=bx!=null?bx:bn.addEndpoint(bv.source,bC);if(a9[bA]){a5[bA]=by}bv.sourceEndpoint=by}}return bv},ad=function(bz){var by=bn.Defaults.ConnectionType||bn.getDefaultConnectionType(),bx=bn.Defaults.EndpointType||af,bw=p.CurrentLibrary.getParent;if(bz.container){bz.parent=bz.container}else{if(bz.sourceEndpoint){bz.parent=bz.sourceEndpoint.parent}else{if(bz.source.constructor==bx){bz.parent=bz.source.parent}else{bz.parent=bw(bz.source)}}}bz._jsPlumb=bn;var bv=new by(bz);bv.id="con_"+ak();bs("click","click",bv);bs("dblclick","dblclick",bv);bs("contextmenu","contextmenu",bv);return bv},bt=function(bw,bx,bv){bx=bx||{};if(!bw.suspendedEndpoint){V(aY,bw.scope,bw)}if(!bx.doNotFireConnectionEvent&&bx.fireEvent!==false){bn.fire("jsPlumbConnection",{connection:bw,source:bw.source,target:bw.target,sourceId:bw.sourceId,targetId:bw.targetId,sourceEndpoint:bw.endpoints[0],targetEndpoint:bw.endpoints[1]},bv)}bn.anchorManager.newConnection(bw);ba(bw.source)},bs=function(bv,bw,bx){bx.bind(bv,function(bz,by){bn.fire(bw,bx,by)})},aw=function(bx){if(bx.container){return bx.container}else{var bv=p.CurrentLibrary.getTagName(bx.source),bw=p.CurrentLibrary.getParent(bx.source);if(bv&&bv.toLowerCase()==="td"){return p.CurrentLibrary.getParent(bw)}else{return bw}}},aF=function(bx){var bw=bn.Defaults.EndpointType||af;bx.parent=aw(bx);bx._jsPlumb=bn;var bv=new bw(bx);bv.id="ep_"+ak();bs("click","endpointClick",bv);bs("dblclick","endpointDblClick",bv);bs("contextmenu","contextmenu",bv);return bv},U=function(bx,bA,bz){var bv=aT[bx];if(bv&&bv.length){for(var by=0;by<bv.length;by++){for(var bw=0;bw<bv[by].connections.length;bw++){var bB=bA(bv[by].connections[bw]);if(bB){return}}if(bz){bz(bv[by])}}}},Y=function(bw){for(var bv in aT){U(bv,bw)}},au=function(bv,bw){if(bv!=null&&bv.parentNode!=null){bv.parentNode.removeChild(bv)}},aX=function(bx,bw){for(var bv=0;bv<bx.length;bv++){au(bx[bv],bw)}},bk=function(bw,bv){return aG(bw,function(bx,by){bm[by]=bv;if(p.CurrentLibrary.isDragSupported(bx)){p.CurrentLibrary.setDraggable(bx,bv)}})},a3=function(bx,by,bv){by=by==="block";var bw=null;if(bv){if(by){bw=function(bA){bA.setVisible(true,true,true)}}else{bw=function(bA){bA.setVisible(false,true,true)}}}var bz=d(bx,"id");U(bz,function(bB){if(by&&bv){var bA=bB.sourceId===bz?1:0;if(bB.endpoints[bA].isVisible()){bB.setVisible(true)}}else{bB.setVisible(by)}},bw)},bi=function(bv){return aG(bv,function(bx,bw){var by=bm[bw]==null?false:bm[bw];by=!by;bm[bw]=by;p.CurrentLibrary.setDraggable(bx,by);return by})},aQ=function(bv,bx){var bw=null;if(bx){bw=function(by){var bz=by.isVisible();by.setVisible(!bz)}}U(bv,function(bz){var by=bz.isVisible();bz.setVisible(!by)},bw)},W=function(bA){var by=bA.timestamp,bv=bA.recalc,bz=bA.offset,bw=bA.elId;if(!bv){if(by&&by===br[bw]){return ah[bw]}}if(bv||!bz){var bx=F(bw);if(bx!=null){ae[bw]=a(bx);ah[bw]=t(bx);br[bw]=by}}else{ah[bw]=bz;if(ae[bw]==null){var bx=F(bw);if(bx!=null){ae[bw]=a(bx)}}}if(ah[bw]&&!ah[bw].right){ah[bw].right=ah[bw].left+ae[bw][0];ah[bw].bottom=ah[bw].top+ae[bw][1];ah[bw].width=ae[bw][0];ah[bw].height=ae[bw][1];ah[bw].centerx=ah[bw].left+(ah[bw].width/2);ah[bw].centery=ah[bw].top+(ah[bw].height/2)}return ah[bw]},aN=function(bv){var bw=ah[bv];if(!bw){bw=W({elId:bv})}return{o:bw,s:ae[bv]}},K=function(bv,bw,by){var bx=F(bv);var bz=d(bx,"id");if(!bz||bz=="undefined"){if(arguments.length==2&&arguments[1]!=undefined){bz=bw}else{if(arguments.length==1||(arguments.length==3&&!arguments[2])){bz="jsPlumb_"+aL+"_"+ak()}}f(bx,"id",bz)}return bz},am=function(bx,bv,bw){bx=bx||function(){};bv=bv||function(){};return function(){var by=null;try{by=bv.apply(this,arguments)}catch(bz){q(bn,"jsPlumb function failed : "+bz)}if(bw==null||(by!==bw)){try{bx.apply(this,arguments)}catch(bz){q(bn,"wrapped function failed : "+bz)}}return by}};this.connectorClass="_jsPlumb_connector";this.endpointClass="_jsPlumb_endpoint";this.overlayClass="_jsPlumb_overlay";this.Anchors={};this.Connectors={canvas:{},svg:{},vml:{}};this.Endpoints={canvas:{},svg:{},vml:{}};this.Overlays={canvas:{},svg:{},vml:{}};this.addClass=function(bw,bv){return p.CurrentLibrary.addClass(bw,bv)};this.removeClass=function(bw,bv){return p.CurrentLibrary.removeClass(bw,bv)};this.hasClass=function(bw,bv){return p.CurrentLibrary.hasClass(bw,bv)};this.addEndpoint=function(bx,by,bH){bH=bH||{};var bw=p.extend({},bH);p.extend(bw,by);bw.endpoint=bw.endpoint||bn.Defaults.Endpoint||p.Defaults.Endpoint;bw.paintStyle=bw.paintStyle||bn.Defaults.EndpointStyle||p.Defaults.EndpointStyle;bx=aI(bx);var bz=[],bC=bx.length&&bx.constructor!=String?bx:[bx];for(var bA=0;bA<bC.length;bA++){var bF=F(bC[bA]),bv=K(bF);bw.source=bF;W({elId:bv});var bE=aF(bw);if(bw.parentAnchor){bE.parentAnchor=bw.parentAnchor}V(aT,bv,bE);var bD=ah[bv],bB=ae[bv];var bG=bE.anchor.compute({xy:[bD.left,bD.top],wh:bB,element:bE});bE.paint({anchorLoc:bG});bz.push(bE);bn.dragManager.endpointAdded(bF)}return bz.length==1?bz[0]:bz};this.addEndpoints=function(bz,bw,bv){var by=[];for(var bx=0;bx<bw.length;bx++){var bA=bn.addEndpoint(bz,bw[bx],bv);if(n(bA)){Array.prototype.push.apply(by,bA)}else{by.push(bA)}}return by};this.animate=function(bx,bw,bv){var by=F(bx),bB=d(bx,"id");bv=bv||{};var bA=p.CurrentLibrary.dragEvents.step;var bz=p.CurrentLibrary.dragEvents.complete;bv[bA]=am(bv[bA],function(){bn.repaint(bB)});bv[bz]=am(bv[bz],function(){bn.repaint(bB)});p.CurrentLibrary.animate(by,bw,bv)};this.checkCondition=function(bx,bz){var bv=bn.getListener(bx);var by=true;if(bv&&bv.length>0){try{for(var bw=0;bw<bv.length;bw++){by=by&&bv[bw](bz)}}catch(bA){q(bn,"cannot check condition ["+bx+"]"+bA)}}return by};this.connect=function(by,bw){var bv=aA(by,bw);if(bv){if(bv.deleteEndpointsOnDetach==null){bv.deleteEndpointsOnDetach=true}var bx=ad(bv);bt(bx,bv);return bx}};this.deleteEndpoint=function(bw){var bB=(typeof bw=="string")?aU[bw]:bw;if(bB){var by=bB.getUuid();if(by){aU[by]=null}bB.detachAll();aX(bB.endpoint.getDisplayElements());bn.anchorManager.deleteEndpoint(bB);for(var bA in aT){var bv=aT[bA];if(bv){var bz=[];for(var bx=0;bx<bv.length;bx++){if(bv[bx]!=bB){bz.push(bv[bx])}}aT[bA]=bz}}bn.dragManager.endpointDeleted(bB)}};this.deleteEveryEndpoint=function(){for(var bx in aT){var bv=aT[bx];if(bv&&bv.length){for(var bw=0;bw<bv.length;bw++){bn.deleteEndpoint(bv[bw])}}}delete aT;aT={};delete aU;aU={}};var a7=function(by,bA,bv){var bx=bn.Defaults.ConnectionType||bn.getDefaultConnectionType(),bw=by.constructor==bx,bz=bw?{connection:by,source:by.source,target:by.target,sourceId:by.sourceId,targetId:by.targetId,sourceEndpoint:by.endpoints[0],targetEndpoint:by.endpoints[1]}:by;if(bA){bn.fire("jsPlumbConnectionDetached",bz,bv)}bn.anchorManager.connectionDetached(bz)},a4=function(bv){bn.fire("connectionDrag",bv)},aR=function(bv){bn.fire("connectionDragStop",bv)};this.detach=function(){if(arguments.length==0){return}var bz=bn.Defaults.ConnectionType||bn.getDefaultConnectionType(),bA=arguments[0].constructor==bz,by=arguments.length==2?bA?(arguments[1]||{}):arguments[0]:arguments[0],bD=(by.fireEvent!==false),bx=by.forceDetach,bw=bA?arguments[0]:by.connection;if(bw){if(bx||(bw.isDetachAllowed(bw)&&bw.endpoints[0].isDetachAllowed(bw)&&bw.endpoints[1].isDetachAllowed(bw))){if(bx||bn.checkCondition("beforeDetach",bw)){bw.endpoints[0].detach(bw,false,true,bD)}}}else{var bv=p.extend({},by);if(bv.uuids){av(bv.uuids[0]).detachFrom(av(bv.uuids[1]),bD)}else{if(bv.sourceEndpoint&&bv.targetEndpoint){bv.sourceEndpoint.detachFrom(bv.targetEndpoint)}else{var bC=K(bv.source),bB=K(bv.target);U(bC,function(bE){if((bE.sourceId==bC&&bE.targetId==bB)||(bE.targetId==bC&&bE.sourceId==bB)){if(bn.checkCondition("beforeDetach",bE)){bE.endpoints[0].detach(bE,false,true,bD)}}})}}}};this.detachAllConnections=function(bx,by){by=by||{};bx=F(bx);var bz=d(bx,"id"),bv=aT[bz];if(bv&&bv.length){for(var bw=0;bw<bv.length;bw++){bv[bw].detachAll(by.fireEvent)}}};this.detachEveryConnection=function(bx){bx=bx||{};for(var by in aT){var bv=aT[by];if(bv&&bv.length){for(var bw=0;bw<bv.length;bw++){bv[bw].detachAll(bx.fireEvent)}}}delete aY;aY={}};this.draggable=function(bx,bv){if(typeof bx=="object"&&bx.length){for(var bw=0;bw<bx.length;bw++){var by=F(bx[bw]);if(by){bb(by,true,bv)}}}else{if(bx._nodes){for(var bw=0;bw<bx._nodes.length;bw++){var by=F(bx._nodes[bw]);if(by){bb(by,true,bv)}}}else{var by=F(bx);if(by){bb(by,true,bv)}}}};this.extend=function(bw,bv){return p.CurrentLibrary.extend(bw,bv)};this.getDefaultEndpointType=function(){return af};this.getDefaultConnectionType=function(){return ax};var bq=function(bz,by,bw,bv){for(var bx=0;bx<bz.length;bx++){bz[bx][by].apply(bz[bx],bw)}return bv(bz)},S=function(bz,by,bw){var bv=[];for(var bx=0;bx<bz.length;bx++){bv.push([bz[bx][by].apply(bz[bx],bw),bz[bx]])}return bv},an=function(bx,bw,bv){return function(){return bq(bx,bw,arguments,bv)}},ay=function(bw,bv){return function(){return S(bw,bv,arguments)}};this.getConnections=function(bH,bw){if(!bH){bH={}}else{if(bH.constructor==String){bH={scope:bH}}}var bE=function(bI){var bJ=[];if(bI){if(typeof bI=="string"){if(bI==="*"){return bI}bJ.push(bI)}else{bJ=bI}}return bJ},bF=bH.scope||bn.getDefaultScope(),bD=bE(bF),bv=bE(bH.source),bB=bE(bH.target),bx=function(bJ,bI){if(bJ==="*"){return true}return bJ.length>0?J(bJ,bI)!=-1:true},bA=(!bw&&bD.length>1)?{}:[],bG=function(bJ,bK){if(!bw&&bD.length>1){var bI=bA[bJ];if(bI==null){bI=[];bA[bJ]=bI}bI.push(bK)}else{bA.push(bK)}};for(var bz in aY){if(bx(bD,bz)){for(var by=0;by<aY[bz].length;by++){var bC=aY[bz][by];if(bx(bv,bC.sourceId)&&bx(bB,bC.targetId)){bG(bz,bC)}}}}return bA};var aK=function(bv){return{setHover:an(bv,"setHover",aK),removeAllOverlays:an(bv,"removeAllOverlays",aK),setLabel:an(bv,"setLabel",aK),addOverlay:an(bv,"addOverlay",aK),removeOverlay:an(bv,"removeOverlay",aK),removeOverlays:an(bv,"removeOverlays",aK),showOverlay:an(bv,"showOverlay",aK),hideOverlay:an(bv,"hideOverlay",aK),showOverlays:an(bv,"showOverlays",aK),hideOverlays:an(bv,"hideOverlays",aK),setPaintStyle:an(bv,"setPaintStyle",aK),setHoverPaintStyle:an(bv,"setHoverPaintStyle",aK),setDetachable:an(bv,"setDetachable",aK),setConnector:an(bv,"setConnector",aK),setParameter:an(bv,"setParameter",aK),setParameters:an(bv,"setParameters",aK),detach:function(){for(var bw=0;bw<bv.length;bw++){bn.detach(bv[bw])}},getLabel:ay(bv,"getLabel"),getOverlay:ay(bv,"getOverlay"),isHover:ay(bv,"isHover"),isDetachable:ay(bv,"isDetachable"),getParameter:ay(bv,"getParameter"),getParameters:ay(bv,"getParameters"),getPaintStyle:ay(bv,"getPaintStyle"),getHoverPaintStyle:ay(bv,"getHoverPaintStyle"),length:bv.length,each:function(bx){for(var bw=0;bw<bv.length;bw++){bx(bv[bw])}return aK(bv)},get:function(bw){return bv[bw]}}};this.select=function(bv){bv=bv||{};bv.scope=bv.scope||"*";var bw=bn.getConnections(bv,true);return aK(bw)};this.getAllConnections=function(){return aY};this.getDefaultScope=function(){return Q};this.getEndpoint=av;this.getEndpoints=function(bv){return aT[K(bv)]};this.getId=K;this.getOffset=function(bw){var bv=ah[bw];return W({elId:bw})};this.getSelector=function(bv){return p.CurrentLibrary.getSelector(bv)};this.getSize=function(bw){var bv=ae[bw];if(!bv){W({elId:bw})}return ae[bw]};this.appendElement=aW;var aS=false;this.isHoverSuspended=function(){return aS};this.setHoverSuspended=function(bv){aS=bv};this.isCanvasAvailable=function(){return A};this.isSVGAvailable=function(){return e};this.isVMLAvailable=b;this.hide=function(bv,bw){a3(bv,"none",bw)};this.idstamp=ak;this.init=function(){if(!M){bn.setRenderMode(bn.Defaults.RenderMode);var bv=function(bw){p.CurrentLibrary.bind(document,bw,function(bC){if(!bn.currentlyDragging&&X==p.CANVAS){for(var bB in aY){var bD=aY[bB];for(var bz=0;bz<bD.length;bz++){var by=bD[bz].connector[bw](bC);if(by){return}}}for(var bA in aT){var bx=aT[bA];for(var bz=0;bz<bx.length;bz++){if(bx[bz].endpoint[bw](bC)){return}}}}})};bv("click");bv("dblclick");bv("mousemove");bv("mousedown");bv("mouseup");bv("contextmenu");M=true;bn.fire("ready")}};this.log=P;this.jsPlumbUIComponent=E;this.makeAnchor=function(){if(arguments.length==0){return null}var bA=arguments[0],bx=arguments[1],bw=arguments[2],by=null;if(bA.compute&&bA.getOrientation){return bA}else{if(typeof bA=="string"){by=p.Anchors[arguments[0]]({elementId:bx,jsPlumbInstance:bn})}else{if(n(bA)){if(n(bA[0])||C(bA[0])){if(bA.length==2&&C(bA[0])&&w(bA[1])){var bv=p.extend({elementId:bx,jsPlumbInstance:bn},bA[1]);by=p.Anchors[bA[0]](bv)}else{by=new aq(bA,null,bx)}}else{var bz={x:bA[0],y:bA[1],orientation:(bA.length>=4)?[bA[2],bA[3]]:[0,0],offsets:(bA.length==6)?[bA[4],bA[5]]:[0,0],elementId:bx};by=new aa(bz);by.clone=function(){return new aa(bz)}}}}}if(!by.id){by.id="anchor_"+ak()}return by};this.makeAnchors=function(by,bw,bv){var bz=[];for(var bx=0;bx<by.length;bx++){if(typeof by[bx]=="string"){bz.push(p.Anchors[by[bx]]({elementId:bw,jsPlumbInstance:bv}))}else{if(n(by[bx])){bz.push(bn.makeAnchor(by[bx],bw,bv))}}}return bz};this.makeDynamicAnchor=function(bv,bw){return new aq(bv,bw)};var aZ={},aH={},bh={},ap={},ab=function(bv,bw){bv.paintStyle=bv.paintStyle||bn.Defaults.EndpointStyles[bw]||bn.Defaults.EndpointStyle||p.Defaults.EndpointStyles[bw]||p.Defaults.EndpointStyle;bv.hoverPaintStyle=bv.hoverPaintStyle||bn.Defaults.EndpointHoverStyles[bw]||bn.Defaults.EndpointHoverStyle||p.Defaults.EndpointHoverStyles[bw]||p.Defaults.EndpointHoverStyle;bv.anchor=bv.anchor||bn.Defaults.Anchors[bw]||bn.Defaults.Anchor||p.Defaults.Anchors[bw]||p.Defaults.Anchor;bv.endpoint=bv.endpoint||bn.Defaults.Endpoints[bw]||bn.Defaults.Endpoint||p.Defaults.Endpoints[bw]||p.Defaults.Endpoint};this.makeTarget=function(by,bz,bF){var bw=p.extend({_jsPlumb:bn},bF);p.extend(bw,bz);ab(bw,1);var bD=p.CurrentLibrary,bE=bw.scope||bn.Defaults.Scope,bA=!(bw.deleteEndpointsOnDetach===false),bx=bw.maxConnections||-1,bv=function(bK){var bI=K(bK);aZ[bI]=bw;bh[bI]=bw.uniqueEndpoint,ap[bI]=bx,aj[bI]=true,proxyComponent=new E(bw);var bH=p.extend({},bw.dropOptions||{}),bG=function(){var bN=p.CurrentLibrary.getDropEvent(arguments),bP=bn.select({target:bI}).length;if(!aj[bI]||ap[bI]>0&&bP>=ap[bI]){console.log("target element "+bI+" is full.");return false}bn.currentlyDragging=false;var bZ=F(bD.getDragObject(arguments)),bO=d(bZ,"dragId"),bX=d(bZ,"originalScope"),bU=bf[bO],bM=bU.endpoints[0],bL=bw.endpoint?p.extend({},bw.endpoint):{};bM.anchor.locked=false;if(bX){bD.setDragScope(bZ,bX)}var bS=proxyComponent.isDropAllowed(bU.sourceId,K(bK),bU.scope,bU,null);if(bU.endpointsToDeleteOnDetach){if(bM===bU.endpointsToDeleteOnDetach[0]){bU.endpointsToDeleteOnDetach[0]=null}else{if(bM===bU.endpointsToDeleteOnDetach[1]){bU.endpointsToDeleteOnDetach[1]=null}}}if(bU.suspendedEndpoint){bU.targetId=bU.suspendedEndpoint.elementId;bU.target=bD.getElementObject(bU.suspendedEndpoint.elementId);bU.endpoints[1]=bU.suspendedEndpoint}if(bS){bM.detach(bU,false,true,false);var bY=aH[bI]||bn.addEndpoint(bK,bw);if(bw.uniqueEndpoint){aH[bI]=bY}bY._makeTargetCreator=true;if(bY.anchor.positionFinder!=null){var bV=bD.getUIPosition(arguments),bR=bD.getOffset(bK),bW=bD.getSize(bK),bQ=bY.anchor.positionFinder(bV,bR,bW,bY.anchor.constructorParams);bY.anchor.x=bQ[0];bY.anchor.y=bQ[1]}var bT=bn.connect({source:bM,target:bY,scope:bX,previousConnection:bU,container:bU.parent,deleteEndpointsOnDetach:bA,doNotFireConnectionEvent:bM.endpointWillMoveAfterConnection});if(bU.endpoints[1]._makeTargetCreator&&bU.endpoints[1].connections.length<2){bn.deleteEndpoint(bU.endpoints[1])}if(bA){bT.endpointsToDeleteOnDetach=[bM,bY]}bT.repaint()}else{if(bU.suspendedEndpoint){if(bM.isReattach){bU.setHover(false);bU.floatingAnchorIndex=null;bU.suspendedEndpoint.addConnection(bU);bn.repaint(bM.elementId)}else{bM.detach(bU,false,true,true,bN)}}}};var bJ=bD.dragEvents.drop;bH.scope=bH.scope||bE;bH[bJ]=am(bH[bJ],bG);bD.initDroppable(bK,bH,true)};by=aI(by);var bC=by.length&&by.constructor!=String?by:[by];for(var bB=0;bB<bC.length;bB++){bv(F(bC[bB]))}return bn};this.unmakeTarget=function(bw,bx){bw=p.CurrentLibrary.getElementObject(bw);var bv=K(bw);if(!bx){delete aZ[bv];delete bh[bv];delete ap[bv];delete aj[bv]}return bn};this.makeTargets=function(bx,by,bv){for(var bw=0;bw<bx.length;bw++){bn.makeTarget(bx[bw],by,bv)}};var az={},a5={},a9={},ac={},N={},aj={};this.makeSource=function(bz,bC,bv){var bA=p.extend({},bv);p.extend(bA,bC);ab(bA,0);var by=p.CurrentLibrary,bB=function(bK){var bE=K(bK),bL=bA.parent,bD=bL!=null?bn.getId(by.getElementObject(bL)):bE;az[bD]=bA;a9[bD]=bA.uniqueEndpoint;ac[bD]=true;var bF=by.dragEvents.stop,bJ=by.dragEvents.drag,bM=p.extend({},bA.dragOptions||{}),bH=bM.drag,bN=bM.stop,bO=null,bI=false;bM.scope=bM.scope||bA.scope;bM[bJ]=am(bM[bJ],function(){if(bH){bH.apply(this,arguments)}bI=false});bM[bF]=am(bM[bF],function(){if(bN){bN.apply(this,arguments)}bn.currentlyDragging=false;if(bO.connections.length==0){bn.deleteEndpoint(bO)}else{by.unbind(bO.canvas,"mousedown");var bQ=bA.anchor||bn.Defaults.Anchor,bR=bO.anchor,bT=bO.connections[0];bO.anchor=bn.makeAnchor(bQ,bE,bn);if(bA.parent){var bS=by.getElementObject(bA.parent);if(bS){var bP=bO.elementId;var bU=bA.container||bn.Defaults.Container||p.Defaults.Container;bO.setElement(bS,bU);bO.endpointWillMoveAfterConnection=false;bn.anchorManager.rehomeEndpoint(bP,bS);bT.previousConnection=null;D(aY[bT.scope],function(bV){return bV.id===bT.id});bn.anchorManager.connectionDetached({sourceId:bT.sourceId,targetId:bT.targetId,connection:bT});bt(bT)}}bO.repaint();bn.repaint(bO.elementId);bn.repaint(bT.targetId)}});var bG=function(bS){if(!ac[bD]){return}if(bC.filter){var bP=bC.filter(by.getOriginalEvent(bS),bK);if(bP===false){return}}var bW=W({elId:bE});var bV=((bS.pageX||bS.page.x)-bW.left)/bW.width,bU=((bS.pageY||bS.page.y)-bW.top)/bW.height,b0=bV,bZ=bU;if(bA.parent){var bT=by.getElementObject(bA.parent),bR=K(bT);bW=W({elId:bR});b0=((bS.pageX||bS.page.x)-bW.left)/bW.width,bZ=((bS.pageY||bS.page.y)-bW.top)/bW.height}var bY={};p.extend(bY,bA);bY.isSource=true;bY.anchor=[bV,bU,0,0];bY.parentAnchor=[b0,bZ,0,0];bY.dragOptions=bM;if(bA.parent){var bQ=bY.container||bn.Defaults.Container||p.Defaults.Container;if(bQ){bY.container=bQ}else{bY.container=p.CurrentLibrary.getParent(bA.parent)}}bO=bn.addEndpoint(bE,bY);bI=true;bO.endpointWillMoveAfterConnection=bA.parent!=null;bO.endpointWillMoveTo=bA.parent?by.getElementObject(bA.parent):null;var bX=function(){if(bI){bn.deleteEndpoint(bO)}};bn.registerListener(bO.canvas,"mouseup",bX);bn.registerListener(bK,"mouseup",bX);by.trigger(bO.canvas,"mousedown",bS)};bn.registerListener(bK,"mousedown",bG);N[bE]=bG};bz=aI(bz);var bw=bz.length&&bz.constructor!=String?bz:[bz];for(var bx=0;bx<bw.length;bx++){bB(F(bw[bx]))}return bn};this.unmakeSource=function(bw,bx){bw=p.CurrentLibrary.getElementObject(bw);var by=K(bw),bv=N[by];if(bv){bn.unregisterListener(_el,"mousedown",bv)}if(!bx){delete az[by];delete a9[by];delete ac[by];delete N[by]}return bn};this.unmakeEverySource=function(){for(var bv in ac){bn.unmakeSource(bv,true)}az={};a9={};ac={};N={}};this.unmakeEveryTarget=function(){for(var bv in aj){bn.unmakeTarget(bv,true)}aZ={};bh={};ap={};aj={};return bn};this.makeSources=function(bx,by,bv){for(var bw=0;bw<bx.length;bw++){bn.makeSource(bx[bw],by,bv)}return bn};var aM=function(bz,by,bA,bv){var bw=bz=="source"?ac:aj;if(C(by)){bw[by]=bv?!bw[by]:bA}else{if(by.length){by=aI(by);for(var bx=0;bx<by.length;bx++){var bB=_el=p.CurrentLibrary.getElementObject(by[bx]),bB=K(_el);bw[bB]=bv?!bw[bB]:bA}}}return bn};this.setSourceEnabled=function(bv,bw){return aM("source",bv,bw)};this.toggleSourceEnabled=function(bv){aM("source",bv,null,true);return bn.isSourceEnabled(bv)};this.isSource=function(bv){bv=p.CurrentLibrary.getElementObject(bv);return ac[K(bv)]!=null};this.isSourceEnabled=function(bv){bv=p.CurrentLibrary.getElementObject(bv);return ac[K(bv)]===true};this.setTargetEnabled=function(bv,bw){return aM("target",bv,bw)};this.toggleTargetEnabled=function(bv){return aM("target",bv,null,true);return bn.isTargetEnabled(bv)};this.isTarget=function(bv){bv=p.CurrentLibrary.getElementObject(bv);return aj[K(bv)]!=null};this.isTargetEnabled=function(bv){bv=p.CurrentLibrary.getElementObject(bv);return aj[K(bv)]===true};this.ready=function(bv){bn.bind("ready",bv)},this.repaint=function(bw){var bx=function(by){ba(F(by))};if(typeof bw=="object"){for(var bv=0;bv<bw.length;bv++){bx(bw[bv])}}else{bx(bw)}};this.repaintEverything=function(){for(var bv in aT){ba(F(bv),null,null)}};this.removeAllEndpoints=function(bx){var bv=d(bx,"id"),by=aT[bv];if(by){for(var bw=0;bw<by.length;bw++){bn.deleteEndpoint(by[bw])}}aT[bv]=[]};this.removeEveryEndpoint=this.deleteEveryEndpoint;this.removeEndpoint=function(bv,bw){bn.deleteEndpoint(bw)};var ag={},bd=function(){for(var bw in ag){for(var bv=0;bv<ag[bw].length;bv++){var bx=ag[bw][bv];p.CurrentLibrary.unbind(bx.el,bx.event,bx.listener)}}ag={}};this.registerListener=function(bw,bv,bx){p.CurrentLibrary.bind(bw,bv,bx);V(ag,bv,{el:bw,event:bv,listener:bx})};this.unregisterListener=function(bw,bv,bx){p.CurrentLibrary.unbind(bw,bv,bx);D(ag,function(by){return by.type==bv&&by.listener==bx})};this.reset=function(){bn.deleteEveryEndpoint();bn.unbind();aZ={};aH={};bh={};ap={};az={};a5={};a9={};bd();bn.anchorManager.reset();bn.dragManager.reset()};this.setDefaultScope=function(bv){Q=bv};this.setDraggable=bk;this.setId=function(bz,bv,bB){var bC=bz.constructor==String?bz:bn.getId(bz),by=bn.getConnections({source:bC,scope:"*"},true),bx=bn.getConnections({target:bC,scope:"*"},true);bv=""+bv;if(!bB){bz=p.CurrentLibrary.getElementObject(bC);p.CurrentLibrary.setAttribute(bz,"id",bv)}bz=p.CurrentLibrary.getElementObject(bv);aT[bv]=aT[bC]||[];for(var bw=0;bw<aT[bv].length;bw++){aT[bv][bw].elementId=bv;aT[bv][bw].element=bz;aT[bv][bw].anchor.elementId=bv}delete aT[bC];bn.anchorManager.changeId(bC,bv);var bA=function(bG,bD,bF){for(var bE=0;bE<bG.length;bE++){bG[bE].endpoints[bD].elementId=bv;bG[bE].endpoints[bD].element=bz;bG[bE][bF+"Id"]=bv;bG[bE][bF]=bz}};bA(by,0,"source");bA(bx,1,"target")};this.setIdChanged=function(bw,bv){bn.setId(bw,bv,true)};this.setDebugLog=function(bv){P=bv};this.setRepaintFunction=function(bv){ar=bv};this.setSuspendDrawing=bg;this.CANVAS="canvas";this.SVG="svg";this.VML="vml";this.setRenderMode=function(bv){if(bv){bv=bv.toLowerCase()}else{return}if(bv!==p.CANVAS&&bv!==p.SVG&&bv!==p.VML){throw new Error("render mode must be one of jsPlumb.CANVAS, jsPlumb.SVG or jsPlumb.VML")}if(bv===p.SVG){if(e){X=p.SVG}else{if(A){X=p.CANVAS}else{if(b()){X=p.VML}}}}else{if(bv===p.CANVAS&&A){X=p.CANVAS}else{if(b()){X=p.VML}}}return X};this.getRenderMode=function(){return X};this.show=function(bv,bw){a3(bv,"block",bw)};this.sizeCanvas=function(bx,bv,bz,bw,by){if(bx){bx.style.height=by+"px";bx.height=by;bx.style.width=bw+"px";bx.width=bw;bx.style.left=bv+"px";bx.style.top=bz+"px"}};this.getTestHarness=function(){return{endpointsByElement:aT,endpointCount:function(bv){var bw=aT[bv];return bw?bw.length:0},connectionCount:function(bv){bv=bv||Q;var bw=aY[bv];return bw?bw.length:0},getId:K,makeAnchor:self.makeAnchor,makeDynamicAnchor:self.makeDynamicAnchor}};this.toggle=aQ;this.toggleVisible=aQ;this.toggleDraggable=bi;this.unload=function(){};this.wrap=am;this.addListener=this.bind;var bo=function(bA,bx){var by=null,bv=bA;if(bx.tagName.toLowerCase()==="svg"&&bx.parentNode){by=bx.parentNode}else{if(bx.offsetParent){by=bx.offsetParent}}if(by!=null){var bw=by.tagName.toLowerCase()==="body"?{left:0,top:0}:t(by),bz=by.tagName.toLowerCase()==="body"?{left:0,top:0}:{left:by.scrollLeft,top:by.scrollTop};bv[0]=bA[0]-bw.left+bz.left;bv[1]=bA[1]-bw.top+bz.top}return bv};var aa=function(bz){var bx=this;this.x=bz.x||0;this.y=bz.y||0;this.elementId=bz.elementId;var bw=bz.orientation||[0,0];var by=null,bv=null;this.offsets=bz.offsets||[0,0];bx.timestamp=null;this.compute=function(bE){var bD=bE.xy,bA=bE.wh,bB=bE.element,bC=bE.timestamp;if(bC&&bC===bx.timestamp){return bv}bv=[bD[0]+(bx.x*bA[0])+bx.offsets[0],bD[1]+(bx.y*bA[1])+bx.offsets[1]];bv=bo(bv,bB.canvas);bx.timestamp=bC;return bv};this.getOrientation=function(bA){return bw};this.equals=function(bA){if(!bA){return false}var bB=bA.getOrientation();var bC=this.getOrientation();return this.x==bA.x&&this.y==bA.y&&this.offsets[0]==bA.offsets[0]&&this.offsets[1]==bA.offsets[1]&&bC[0]==bB[0]&&bC[1]==bB[1]};this.getCurrentLocation=function(){return bv}};var a1=function(bB){var bz=bB.reference,bA=bB.referenceCanvas,bx=a(F(bA)),bw=0,bC=0,bv=null,by=null;this.x=0;this.y=0;this.isFloating=true;this.compute=function(bG){var bF=bG.xy,bE=bG.element,bD=[bF[0]+(bx[0]/2),bF[1]+(bx[1]/2)];bD=bo(bD,bE.canvas);by=bD;return bD};this.getOrientation=function(bE){if(bv){return bv}else{var bD=bz.getOrientation(bE);return[Math.abs(bD[0])*bw*-1,Math.abs(bD[1])*bC*-1]}};this.over=function(bD){bv=bD.getOrientation()};this.out=function(){bv=null};this.getCurrentLocation=function(){return by}};var aq=function(bx,bw,bC){this.isSelective=true;this.isDynamic=true;var bF=[],bE=this,bD=function(bG){return bG.constructor==aa?bG:bn.makeAnchor(bG,bC,bn)};for(var bB=0;bB<bx.length;bB++){bF[bB]=bD(bx[bB])}this.addAnchor=function(bG){bF.push(bD(bG))};this.getAnchors=function(){return bF};this.locked=false;var by=bF.length>0?bF[0]:null,bA=bF.length>0?0:-1,bE=this,bz=function(bI,bG,bM,bL,bH){var bK=bL[0]+(bI.x*bH[0]),bJ=bL[1]+(bI.y*bH[1]);return Math.sqrt(Math.pow(bG-bK,2)+Math.pow(bM-bJ,2))},bv=bw||function(bQ,bH,bI,bJ,bG){var bL=bI[0]+(bJ[0]/2),bK=bI[1]+(bJ[1]/2);var bN=-1,bP=Infinity;for(var bM=0;bM<bG.length;bM++){var bO=bz(bG[bM],bL,bK,bQ,bH);if(bO<bP){bN=bM+0;bP=bO}}return bG[bN]};this.compute=function(bK){var bJ=bK.xy,bG=bK.wh,bI=bK.timestamp,bH=bK.txy,bL=bK.twh;if(bE.locked||bH==null||bL==null){return by.compute(bK)}else{bK.timestamp=null}by=bv(bJ,bG,bH,bL,bF);bE.x=by.x;bE.y=by.y;return by.compute(bK)};this.getCurrentLocation=function(){return by!=null?by.getCurrentLocation():null};this.getOrientation=function(bG){return by!=null?by.getOrientation(bG):[0,0]};this.over=function(bG){if(by!=null){by.over(bG)}};this.out=function(){if(by!=null){by.out()}}};var bj={},ai={},aJ={},T={HORIZONTAL:"horizontal",VERTICAL:"vertical",DIAGONAL:"diagonal",IDENTITY:"identity"},bl=function(bE,bF,bB,by){if(bE===bF){return{orientation:T.IDENTITY,a:["top","top"]}}var bw=Math.atan2((by.centery-bB.centery),(by.centerx-bB.centerx)),bz=Math.atan2((bB.centery-by.centery),(bB.centerx-by.centerx)),bA=((bB.left<=by.left&&bB.right>=by.left)||(bB.left<=by.right&&bB.right>=by.right)||(bB.left<=by.left&&bB.right>=by.right)||(by.left<=bB.left&&by.right>=bB.right)),bG=((bB.top<=by.top&&bB.bottom>=by.top)||(bB.top<=by.bottom&&bB.bottom>=by.bottom)||(bB.top<=by.top&&bB.bottom>=by.bottom)||(by.top<=bB.top&&by.bottom>=bB.bottom));if(!(bA||bG)){var bD=null,bx=false,bv=false,bC=null;if(by.left>bB.left&&by.top>bB.top){bD=["right","top"]}else{if(by.left>bB.left&&bB.top>by.top){bD=["top","left"]}else{if(by.left<bB.left&&by.top<bB.top){bD=["top","right"]}else{if(by.left<bB.left&&by.top>bB.top){bD=["left","top"]}}}}return{orientation:T.DIAGONAL,a:bD,theta:bw,theta2:bz}}else{if(bA){return{orientation:T.HORIZONTAL,a:bB.top<by.top?["bottom","top"]:["top","bottom"],theta:bw,theta2:bz}}else{return{orientation:T.VERTICAL,a:bB.left<by.left?["right","left"]:["left","right"],theta:bw,theta2:bz}}}},a2=function(bJ,bF,bD,bE,bK,bG,bx){var bL=[],bw=bF[bK?0:1]/(bE.length+1);for(var bH=0;bH<bE.length;bH++){var bM=(bH+1)*bw,bv=bG*bF[bK?1:0];if(bx){bM=bF[bK?0:1]-bM}var bC=(bK?bM:bv),bz=bD[0]+bC,bB=bC/bF[0],bA=(bK?bv:bM),by=bD[1]+bA,bI=bA/bF[1];bL.push([bz,by,bB,bI,bE[bH][1],bE[bH][2]])}return bL},a8=function(bw,bv){return bw[0]>bv[0]?1:-1},Z=function(bv){return function(bx,bw){var by=true;if(bv){if(bx[0][0]<bw[0][0]){by=true}else{by=bx[0][1]>bw[0][1]}}else{if(bx[0][0]>bw[0][0]){by=true}else{by=bx[0][1]>bw[0][1]}}return by===false?-1:1}},O=function(bw,bv){var by=bw[0][0]<0?-Math.PI-bw[0][0]:Math.PI-bw[0][0],bx=bv[0][0]<0?-Math.PI-bv[0][0]:Math.PI-bv[0][0];if(by>bx){return 1}else{return bw[0][1]>bv[0][1]?1:-1}},a0={top:a8,right:Z(true),bottom:Z(true),left:O},ao=function(bv,bw){return bv.sort(bw)},al=function(bw,bv){var by=ae[bw],bz=ah[bw],bx=function(bG,bN,bC,bF,bL,bK,bB){if(bF.length>0){var bJ=ao(bF,a0[bG]),bH=bG==="right"||bG==="top",bA=a2(bG,bN,bC,bJ,bL,bK,bH);var bO=function(bR,bQ){var bP=bo([bQ[0],bQ[1]],bR.canvas);ai[bR.id]=[bP[0],bP[1],bQ[2],bQ[3]];aJ[bR.id]=bB};for(var bD=0;bD<bA.length;bD++){var bI=bA[bD][4],bM=bI.endpoints[0].elementId===bw,bE=bI.endpoints[1].elementId===bw;if(bM){bO(bI.endpoints[0],bA[bD])}else{if(bE){bO(bI.endpoints[1],bA[bD])}}}}};bx("bottom",by,[bz.left,bz.top],bv.bottom,true,1,[0,1]);bx("top",by,[bz.left,bz.top],bv.top,true,0,[0,-1]);bx("left",by,[bz.left,bz.top],bv.left,false,0,[-1,0]);bx("right",by,[bz.left,bz.top],bv.right,false,1,[1,0])},aE=function(){var bv={},bz={},bw=this,by={};this.reset=function(){bv={};bz={};by={}};this.newConnection=function(bD){var bF=bD.sourceId,bC=bD.targetId,bA=bD.endpoints,bE=true,bB=function(bG,bH,bJ,bI,bK){if((bF==bC)&&bJ.isContinuous){p.CurrentLibrary.removeElement(bA[1].canvas);bE=false}V(bz,bI,[bK,bH,bJ.constructor==aq])};bB(0,bA[0],bA[0].anchor,bC,bD);if(bE){bB(1,bA[1],bA[1].anchor,bF,bD)}};this.connectionDetached=function(bA){var bB=bA.connection||bA;var bG=bB.sourceId,bH=bB.targetId,bK=bB.endpoints,bF=function(bL,bM,bO,bN,bP){if(bO.constructor==a1){}else{D(bz[bN],function(bQ){return bQ[0].id==bP.id})}};bF(1,bK[1],bK[1].anchor,bG,bB);bF(0,bK[0],bK[0].anchor,bH,bB);var bC=bB.sourceId,bD=bB.targetId,bJ=bB.endpoints[0].id,bE=bB.endpoints[1].id,bI=function(bN,bL){if(bN){var bM=function(bO){return bO[4]==bL};D(bN.top,bM);D(bN.left,bM);D(bN.bottom,bM);D(bN.right,bM)}};bI(by[bC],bJ);bI(by[bD],bE);bw.redraw(bC);bw.redraw(bD)};this.add=function(bB,bA){V(bv,bA,bB)};this.changeId=function(bB,bA){bz[bA]=bz[bB];bv[bA]=bv[bB];delete bz[bB];delete bv[bB]};this.getConnectionsFor=function(bA){return bz[bA]||[]};this.getEndpointsFor=function(bA){return bv[bA]||[]};this.deleteEndpoint=function(bA){D(bv[bA.elementId],function(bB){return bB.id==bA.id})};this.clearFor=function(bA){delete bv[bA];bv[bA]=[]};var bx=function(bU,bH,bP,bE,bK,bL,bN,bJ,bW,bM,bD,bT){var bR=-1,bC=-1,bF=bE.endpoints[bN],bO=bF.id,bI=[1,0][bN],bA=[[bH,bP],bE,bK,bL,bO],bB=bU[bW],bV=bF._continuousAnchorEdge?bU[bF._continuousAnchorEdge]:null;if(bV){var bS=i(bV,function(bX){return bX[4]==bO});if(bS!=-1){bV.splice(bS,1);for(var bQ=0;bQ<bV.length;bQ++){u(bD,bV[bQ][1],function(bX){return bX.id==bV[bQ][1].id});u(bT,bV[bQ][1].endpoints[bN],function(bX){return bX.id==bV[bQ][1].endpoints[bN].id})}}}for(var bQ=0;bQ<bB.length;bQ++){if(bN==1&&bB[bQ][3]===bL&&bC==-1){bC=bQ}u(bD,bB[bQ][1],function(bX){return bX.id==bB[bQ][1].id});u(bT,bB[bQ][1].endpoints[bN],function(bX){return bX.id==bB[bQ][1].endpoints[bN].id})}if(bR!=-1){bB[bR]=bA}else{var bG=bJ?bC!=-1?bC:0:bB.length;bB.splice(bG,0,bA)}bF._continuousAnchorEdge=bW};this.redraw=function(bP,bR,bC,bF){var b0=bv[bP]||[],bZ=bz[bP]||[],bB=[],bY=[],bD=[];bC=bC||r();bF=bF||{left:0,top:0};if(bR){bR={left:bR.left+bF.left,top:bR.top+bF.top}}W({elId:bP,offset:bR,recalc:false,timestamp:bC});var bK=ah[bP],bG=ae[bP],bM={};for(var bW=0;bW<bZ.length;bW++){var bH=bZ[bW][0],bJ=bH.sourceId,bE=bH.targetId,bI=bH.endpoints[0].anchor.isContinuous,bO=bH.endpoints[1].anchor.isContinuous;if(bI||bO){var bX=bJ+"_"+bE,bU=bE+"_"+bJ,bT=bM[bX],bN=bH.sourceId==bP?1:0;if(bI&&!by[bJ]){by[bJ]={top:[],right:[],bottom:[],left:[]}}if(bO&&!by[bE]){by[bE]={top:[],right:[],bottom:[],left:[]}}if(bP!=bE){W({elId:bE,timestamp:bC})}if(bP!=bJ){W({elId:bJ,timestamp:bC})}var bL=aN(bE),bA=aN(bJ);if(bE==bJ&&(bI||bO)){bx(by[bJ],-Math.PI/2,0,bH,false,bE,0,false,"top",bJ,bB,bY)}else{if(!bT){bT=bl(bJ,bE,bA.o,bL.o);bM[bX]=bT}if(bI){bx(by[bJ],bT.theta,0,bH,false,bE,0,false,bT.a[0],bJ,bB,bY)}if(bO){bx(by[bE],bT.theta2,-1,bH,true,bJ,1,true,bT.a[1],bE,bB,bY)}}if(bI){u(bD,bJ,function(b1){return b1===bJ})}if(bO){u(bD,bE,function(b1){return b1===bE})}u(bB,bH,function(b1){return b1.id==bH.id});if((bI&&bN==0)||(bO&&bN==1)){u(bY,bH.endpoints[bN],function(b1){return b1.id==bH.endpoints[bN].id})}}}for(var bW=0;bW<bD.length;bW++){al(bD[bW],by[bD[bW]])}for(var bW=0;bW<b0.length;bW++){b0[bW].paint({timestamp:bC,offset:bK,dimensions:bG})}for(var bW=0;bW<bY.length;bW++){bY[bW].paint({timestamp:bC,offset:bK,dimensions:bG})}for(var bW=0;bW<bZ.length;bW++){var bQ=bZ[bW][1];if(bQ.anchor.constructor==aq){bQ.paint({elementWithPrecedence:bP});u(bB,bZ[bW][0],function(b1){return b1.id==bZ[bW][0].id});for(var bV=0;bV<bQ.connections.length;bV++){if(bQ.connections[bV]!==bZ[bW][0]){u(bB,bQ.connections[bV],function(b1){return b1.id==bQ.connections[bV].id})}}}else{if(bQ.anchor.constructor==aa){u(bB,bZ[bW][0],function(b1){return b1.id==bZ[bW][0].id})}}}var bS=bf[bP];if(bS){bS.paint({timestamp:bC,recalc:false,elId:bP})}for(var bW=0;bW<bB.length;bW++){bB[bW].paint({elId:bP,timestamp:bC,recalc:false})}};this.rehomeEndpoint=function(bA,bE){var bB=bv[bA]||[],bC=bn.getId(bE);for(var bD=0;bD<bB.length;bD++){bw.add(bB[bD],bC)}bB.splice(0,bB.length)}};bn.anchorManager=new aE();bn.continuousAnchorFactory={get:function(bw){var bv=bj[bw.elementId];if(!bv){bv={type:"Continuous",compute:function(bx){return ai[bx.element.id]||[0,0]},getCurrentLocation:function(bx){return ai[bx.id]||[0,0]},getOrientation:function(bx){return aJ[bx.id]||[0,0]},isDynamic:true,isContinuous:true};bj[bw.elementId]=bv}return bv}};var aV=function(){var by={},bx=[],bw={},bv={};this.register=function(bB){var bA=p.CurrentLibrary;bB=bA.getElementObject(bB);var bD=bn.getId(bB),bz=bA.getDOMElement(bB);if(!by[bD]){by[bD]=bB;bx.push(bB);bw[bD]={}}var bC=function(bH){var bK=bA.getElementObject(bH),bJ=bA.getOffset(bK);for(var bE=0;bE<bH.childNodes.length;bE++){if(bH.childNodes[bE].nodeType!=3){var bG=bA.getElementObject(bH.childNodes[bE]),bI=bn.getId(bG,null,true);if(bI&&bv[bI]&&bv[bI]>0){var bF=bA.getOffset(bG);bw[bD][bI]={id:bI,offset:{left:bF.left-bJ.left,top:bF.top-bJ.top}}}}}};bC(bz)};this.endpointAdded=function(bB){var bF=p.CurrentLibrary,bI=document.body,bz=bn.getId(bB),bH=bF.getDOMElement(bB),bA=bH.parentNode,bD=bA==bI;bv[bz]=bv[bz]?bv[bz]+1:1;while(bA!=bI){var bE=bn.getId(bA);if(by[bE]){var bK=-1,bG=bF.getElementObject(bA),bC=bF.getOffset(bG);if(bw[bE][bz]==null){var bJ=p.CurrentLibrary.getOffset(bB);bw[bE][bz]={id:bz,offset:{left:bJ.left-bC.left,top:bJ.top-bC.top}}}break}bA=bA.parentNode}};this.endpointDeleted=function(bA){if(bv[bA.elementId]){bv[bA.elementId]--;if(bv[bA.elementId]<=0){for(var bz in bw){delete bw[bz][bA.elementId]}}}};this.getElementsForDraggable=function(bz){return bw[bz]};this.reset=function(){by={};bx=[];bw={};bv={}}};bn.dragManager=new aV();var ax=function(bN){var bG=this,bx=true;bG.idPrefix="_jsplumb_c_";bG.defaultLabelLocation=0.5;bG.defaultOverlayKeys=["Overlays","ConnectionOverlays"];this.parent=bN.parent;z.apply(this,arguments);this.isVisible=function(){return bx};this.setVisible=function(bP){bx=bP;bG[bP?"showOverlays":"hideOverlays"]();if(bG.connector&&bG.connector.canvas){bG.connector.canvas.style.display=bP?"block":"none"}};this.source=F(bN.source);this.target=F(bN.target);if(bN.sourceEndpoint){this.source=bN.sourceEndpoint.endpointWillMoveTo||bN.sourceEndpoint.getElement()}if(bN.targetEndpoint){this.target=bN.targetEndpoint.getElement()}bG.previousConnection=bN.previousConnection;var bD=bN.cost;bG.getCost=function(){return bD};bG.setCost=function(bP){bD=bP};var bB=bN.bidirectional===false?false:true;bG.isBidirectional=function(){return bB};this.sourceId=d(this.source,"id");this.targetId=d(this.target,"id");this.getAttachedElements=function(){return bG.endpoints};this.scope=bN.scope;this.endpoints=[];this.endpointStyles=[];var bM=function(bQ,bP){if(bQ){return bn.makeAnchor(bQ,bP,bn)}},bK=function(bP,bV,bQ,bS,bT,bR,bU){if(bP){bG.endpoints[bV]=bP;bP.addConnection(bG)}else{if(!bQ.endpoints){bQ.endpoints=[null,null]}var b1=bQ.endpoints[bV]||bQ.endpoint||bn.Defaults.Endpoints[bV]||p.Defaults.Endpoints[bV]||bn.Defaults.Endpoint||p.Defaults.Endpoint;if(!bQ.endpointStyles){bQ.endpointStyles=[null,null]}if(!bQ.endpointHoverStyles){bQ.endpointHoverStyles=[null,null]}var bZ=bQ.endpointStyles[bV]||bQ.endpointStyle||bn.Defaults.EndpointStyles[bV]||p.Defaults.EndpointStyles[bV]||bn.Defaults.EndpointStyle||p.Defaults.EndpointStyle;if(bZ.fillStyle==null&&bR!=null){bZ.fillStyle=bR.strokeStyle}if(bZ.outlineColor==null&&bR!=null){bZ.outlineColor=bR.outlineColor}if(bZ.outlineWidth==null&&bR!=null){bZ.outlineWidth=bR.outlineWidth}var bY=bQ.endpointHoverStyles[bV]||bQ.endpointHoverStyle||bn.Defaults.EndpointHoverStyles[bV]||p.Defaults.EndpointHoverStyles[bV]||bn.Defaults.EndpointHoverStyle||p.Defaults.EndpointHoverStyle;if(bU!=null){if(bY==null){bY={}}if(bY.fillStyle==null){bY.fillStyle=bU.strokeStyle}}var bX=bQ.anchors?bQ.anchors[bV]:bQ.anchor?bQ.anchor:bM(bn.Defaults.Anchors[bV],bT)||bM(p.Defaults.Anchors[bV],bT)||bM(bn.Defaults.Anchor,bT)||bM(p.Defaults.Anchor,bT),b0=bQ.uuids?bQ.uuids[bV]:null,bW=aF({paintStyle:bZ,hoverPaintStyle:bY,endpoint:b1,connections:[bG],uuid:b0,anchor:bX,source:bS,scope:bQ.scope,container:bQ.container,reattach:bQ.reattach,detachable:bQ.detachable});bG.endpoints[bV]=bW;if(bQ.drawEndpoints===false){bW.setVisible(false,true,true)}return bW}};var bI=bK(bN.sourceEndpoint,0,bN,bG.source,bG.sourceId,bN.paintStyle,bN.hoverPaintStyle);if(bI){V(aT,this.sourceId,bI)}var by=((bG.sourceId==bG.targetId)&&bN.targetEndpoint==null)?bI:bN.targetEndpoint,bH=bK(by,1,bN,bG.target,bG.targetId,bN.paintStyle,bN.hoverPaintStyle);if(bH){V(aT,this.targetId,bH)}if(!this.scope){this.scope=this.endpoints[0].scope}if(bN.deleteEndpointsOnDetach){bG.endpointsToDeleteOnDetach=[bI,bH]}var bw=bn.Defaults.ConnectionsDetachable;if(bN.detachable===false){bw=false}if(bG.endpoints[0].connectionsDetachable===false){bw=false}if(bG.endpoints[1].connectionsDetachable===false){bw=false}if(bD==null){bD=bG.endpoints[0].getConnectionCost()}if(bN.bidirectional==null){bB=bG.endpoints[0].areConnectionsBidirectional()}this.isDetachable=function(){return bw===true};this.setDetachable=function(bP){bw=bP===true};var bO=p.extend({},this.endpoints[0].getParameters());p.extend(bO,this.endpoints[1].getParameters());p.extend(bO,bG.getParameters());bG.setParameters(bO);var bE=bG.setHover;bG.setHover=function(bP){bG.connector.setHover.apply(bG.connector,arguments);bE.apply(bG,arguments)};var bL=function(bP){if(x==null){bG.setHover(bP,false)}};this.setConnector=function(bP,bQ){if(bG.connector!=null){aX(bG.connector.getDisplayElements(),bG.parent)}var bR={_jsPlumb:bG._jsPlumb,parent:bN.parent,cssClass:bN.cssClass,container:bN.container,tooltip:bG.tooltip};if(C(bP)){this.connector=new p.Connectors[X][bP](bR)}else{if(n(bP)){this.connector=new p.Connectors[X][bP[0]](p.extend(bP[1],bR))}}bG.canvas=bG.connector.canvas;G(bG.connector,bG,bL);if(!bQ){bG.repaint()}};bG.setConnector(this.endpoints[0].connector||this.endpoints[1].connector||bN.connector||bn.Defaults.Connector||p.Defaults.Connector,true);this.setPaintStyle(this.endpoints[0].connectorStyle||this.endpoints[1].connectorStyle||bN.paintStyle||bn.Defaults.PaintStyle||p.Defaults.PaintStyle,true);this.setHoverPaintStyle(this.endpoints[0].connectorHoverStyle||this.endpoints[1].connectorHoverStyle||bN.hoverPaintStyle||bn.Defaults.HoverPaintStyle||p.Defaults.HoverPaintStyle,true);this.paintStyleInUse=this.getPaintStyle();this.moveParent=function(bS){var bR=p.CurrentLibrary,bQ=bR.getParent(bG.connector.canvas);if(bG.connector.bgCanvas){bR.removeElement(bG.connector.bgCanvas,bQ);bR.appendElement(bG.connector.bgCanvas,bS)}bR.removeElement(bG.connector.canvas,bQ);bR.appendElement(bG.connector.canvas,bS);for(var bP=0;bP<bG.overlays.length;bP++){if(bG.overlays[bP].isAppendedAtTopLevel){bR.removeElement(bG.overlays[bP].canvas,bQ);bR.appendElement(bG.overlays[bP].canvas,bS);if(bG.overlays[bP].reattachListeners){bG.overlays[bP].reattachListeners(bG.connector)}}}if(bG.connector.reattachListeners){bG.connector.reattachListeners()}};W({elId:this.sourceId});W({elId:this.targetId});var bA=ah[this.sourceId],bz=ae[this.sourceId],bv=ah[this.targetId],bC=ae[this.targetId],bF=r(),bJ=this.endpoints[0].anchor.compute({xy:[bA.left,bA.top],wh:bz,element:this.endpoints[0],elementId:this.endpoints[0].elementId,txy:[bv.left,bv.top],twh:bC,tElement:this.endpoints[1],timestamp:bF});this.endpoints[0].paint({anchorLoc:bJ,timestamp:bF});bJ=this.endpoints[1].anchor.compute({xy:[bv.left,bv.top],wh:bC,element:this.endpoints[1],elementId:this.endpoints[1].elementId,txy:[bA.left,bA.top],twh:bz,tElement:this.endpoints[0],timestamp:bF});this.endpoints[1].paint({anchorLoc:bJ,timestamp:bF});this.paint=function(b6){b6=b6||{};var bX=b6.elId,bY=b6.ui,bV=b6.recalc,bQ=b6.timestamp,bZ=false,b5=bZ?this.sourceId:this.targetId,bU=bZ?this.targetId:this.sourceId,bR=bZ?0:1,b7=bZ?1:0;var b8=W({elId:bX,offset:bY,recalc:bV,timestamp:bQ}),bW=W({elId:b5,timestamp:bQ});var b1=this.endpoints[b7],bP=this.endpoints[bR],bT=b1.anchor.getCurrentLocation(b1),b4=bP.anchor.getCurrentLocation(bP);var bS=0;for(var b3=0;b3<bG.overlays.length;b3++){var b0=bG.overlays[b3];if(b0.isVisible()){bS=Math.max(bS,b0.computeMaxSize(bG.connector))}}var b2=this.connector.compute(bT,b4,this.endpoints[b7],this.endpoints[bR],this.endpoints[b7].anchor,this.endpoints[bR].anchor,bG.paintStyleInUse.lineWidth,bS,b8,bW);bG.connector.paint(b2,bG.paintStyleInUse);for(var b3=0;b3<bG.overlays.length;b3++){var b0=bG.overlays[b3];if(b0.isVisible){bG.overlayPlacements[b3]=b0.draw(bG.connector,bG.paintStyleInUse,b2)}}};this.repaint=function(bQ){bQ=bQ||{};var bP=!(bQ.recalc===false);this.paint({elId:this.sourceId,recalc:bP,timestamp:bQ.timestamp})}};var bc=function(bw){var bv=false;return{drag:function(){if(bv){bv=false;return true}var bx=p.CurrentLibrary.getUIPosition(arguments),by=bw.element;if(by){p.CurrentLibrary.setOffset(by,bx);ba(F(by),bx)}},stopDrag:function(){bv=true}}};var at=function(bz,by,bA,bx,bv){var bw=new a1({reference:by,referenceCanvas:bx});return aF({paintStyle:bz,endpoint:bA,anchor:bw,source:bv,scope:"__floating"})};var R=function(bx,bv){var bz=document.createElement("div");bz.style.position="absolute";var bw=F(bz);aW(bz,bv);var by=K(bw);W({elId:by});bx.id=by;bx.element=bw};var af=function(b0){var bO=this;bO.idPrefix="_jsplumb_e_";bO.defaultLabelLocation=[0.5,0.5];bO.defaultOverlayKeys=["Overlays","EndpointOverlays"];this.parent=b0.parent;z.apply(this,arguments);b0=b0||{};var bA=true,by=!(b0.enabled===false);this.isVisible=function(){return bA};this.setVisible=function(b3,b6,b2){bA=b3;if(bO.canvas){bO.canvas.style.display=b3?"block":"none"}bO[b3?"showOverlays":"hideOverlays"]();if(!b6){for(var b5=0;b5<bO.connections.length;b5++){bO.connections[b5].setVisible(b3);if(!b2){var b4=bO===bO.connections[b5].endpoints[0]?1:0;if(bO.connections[b5].endpoints[b4].connections.length==1){bO.connections[b5].endpoints[b4].setVisible(b3,true,true)}}}}};this.isEnabled=function(){return by};this.setEnabled=function(b2){by=b2};var bN=b0.source,bH=b0.uuid,bY=null,bC=null;if(bH){aU[bH]=bO}var bF=d(bN,"id");this.elementId=bF;this.element=bN;var bx=b0.connectionCost;this.getConnectionCost=function(){return bx};this.setConnectionCost=function(b2){bx=b2};var bX=b0.connectionsBidirectional===false?false:true;this.areConnectionsBidirectional=function(){return bX};this.setConnectionsBidirectional=function(b2){bX=b2};bO.anchor=b0.anchor?bn.makeAnchor(b0.anchor,bF,bn):b0.anchors?bn.makeAnchor(b0.anchors,bF,bn):bn.makeAnchor("TopCenter",bF,bn);if(!b0._transient){bn.anchorManager.add(bO,bF)}var bL=null,bQ=null;this.setEndpoint=function(b2){var b3={_jsPlumb:bO._jsPlumb,parent:b0.parent,container:b0.container,tooltip:b0.tooltip,connectorTooltip:b0.connectorTooltip,endpoint:bO};if(C(b2)){bL=new p.Endpoints[X][b2](b3)}else{if(n(b2)){b3=p.extend(b2[1],b3);bL=new p.Endpoints[X][b2[0]](b3)}else{bL=b2.clone()}}var b4=p.extend({},b3);bL.clone=function(){var b5=new Object();bL.constructor.apply(b5,[b4]);return b5};bO.endpoint=bL;bO.type=bO.endpoint.type};this.setEndpoint(b0.endpoint||bn.Defaults.Endpoint||p.Defaults.Endpoint||"Dot");bQ=bL;var bM=bO.setHover;bO.setHover=function(){bO.endpoint.setHover.apply(bO.endpoint,arguments);bM.apply(bO,arguments)};var b1=function(b2){if(bO.connections.length>0){bO.connections[0].setHover(b2,false)}else{bO.setHover(b2)}};G(bO.endpoint,bO,b1);this.setPaintStyle(b0.paintStyle||b0.style||bn.Defaults.EndpointStyle||p.Defaults.EndpointStyle,true);this.setHoverPaintStyle(b0.hoverPaintStyle||bn.Defaults.EndpointHoverStyle||p.Defaults.EndpointHoverStyle,true);this.paintStyleInUse=this.getPaintStyle();var bJ=this.getPaintStyle();this.connectorStyle=b0.connectorStyle;this.connectorHoverStyle=b0.connectorHoverStyle;this.connectorOverlays=b0.connectorOverlays;this.connector=b0.connector;this.connectorTooltip=b0.connectorTooltip;this.isSource=b0.isSource||false;this.isTarget=b0.isTarget||false;var bU=b0.maxConnections||bn.Defaults.MaxConnections;this.getAttachedElements=function(){return bO.connections};this.canvas=this.endpoint.canvas;this.connections=b0.connections||[];this.scope=b0.scope||Q;this.timestamp=null;bO.isReattach=b0.reattach||false;bO.connectionsDetachable=bn.Defaults.ConnectionsDetachable;if(b0.connectionsDetachable===false||b0.detachable===false){bO.connectionsDetachable=false}var bI=b0.dragAllowedWhenFull||true;this.computeAnchor=function(b2){return bO.anchor.compute(b2)};this.addConnection=function(b2){bO.connections.push(b2)};this.detach=function(b3,b8,b4,cb,b2){var ca=i(bO.connections,function(cd){return cd.id==b3.id}),b9=false;cb=(cb!==false);if(ca>=0){if(b4||b3._forceDetach||b3.isDetachable()||b3.isDetachAllowed(b3)){var cc=b3.endpoints[0]==bO?b3.endpoints[1]:b3.endpoints[0];if(b4||b3._forceDetach||(bO.isDetachAllowed(b3))){bO.connections.splice(ca,1);if(!b8){cc.detach(b3,true,b4);if(b3.endpointsToDeleteOnDetach){for(var b7=0;b7<b3.endpointsToDeleteOnDetach.length;b7++){var b5=b3.endpointsToDeleteOnDetach[b7];if(b5&&b5.connections.length==0){bn.deleteEndpoint(b5)}}}}aX(b3.connector.getDisplayElements(),b3.parent);D(aY[b3.scope],function(cd){return cd.id==b3.id});b9=true;var b6=(!b8&&cb);a7(b3,b6,b2)}}}return b9};this.detachAll=function(b3,b2){while(bO.connections.length>0){bO.detach(bO.connections[0],false,true,b3,b2)}};this.detachFrom=function(b5,b4,b2){var b6=[];for(var b3=0;b3<bO.connections.length;b3++){if(bO.connections[b3].endpoints[1]==b5||bO.connections[b3].endpoints[0]==b5){b6.push(bO.connections[b3])}}for(var b3=0;b3<b6.length;b3++){if(bO.detach(b6[b3],false,true,b4,b2)){b6[b3].setHover(false,false)}}};this.detachFromConnection=function(b3){var b2=i(bO.connections,function(b4){return b4.id==b3.id});if(b2>=0){bO.connections.splice(b2,1)}};this.getElement=function(){return bN};this.setElement=function(b5,b2){var b7=K(b5);D(aT[bO.elementId],function(b8){return b8.id==bO.id});bN=F(b5);bF=K(bN);bO.elementId=bF;var b6=aw({source:b7,container:b2}),b4=bz.getParent(bO.canvas);bz.removeElement(bO.canvas,b4);bz.appendElement(bO.canvas,b6);for(var b3=0;b3<bO.connections.length;b3++){bO.connections[b3].moveParent(b6);bO.connections[b3].sourceId=bF;bO.connections[b3].source=bN}V(aT,b7,bO)};this.getUuid=function(){return bH};this.makeInPlaceCopy=function(){var b4=bO.anchor.getCurrentLocation(bO),b3=bO.anchor.getOrientation(bO),b2={compute:function(){return[b4[0],b4[1]]},getCurrentLocation:function(){return[b4[0],b4[1]]},getOrientation:function(){return b3}};return aF({anchor:b2,source:bN,paintStyle:this.getPaintStyle(),endpoint:bL,_transient:true,scope:bO.scope})};this.isConnectedTo=function(b4){var b3=false;if(b4){for(var b2=0;b2<bO.connections.length;b2++){if(bO.connections[b2].endpoints[1]==b4){b3=true;break}}}return b3};this.isFloating=function(){return bY!=null};this.connectorSelector=function(){var b2=bO.connections[0];if(bO.isTarget&&b2){return b2}else{return(bO.connections.length<bU)||bU==-1?null:b2}};this.isFull=function(){return !(bO.isFloating()||bU<1||bO.connections.length<bU)};this.setDragAllowedWhenFull=function(b2){bI=b2};this.setStyle=bO.setPaintStyle;this.equals=function(b2){return this.anchor.equals(b2.anchor)};var bK=function(b3){var b2=0;if(b3!=null){for(var b4=0;b4<bO.connections.length;b4++){if(bO.connections[b4].sourceId==b3||bO.connections[b4].targetId==b3){b2=b4;break}}}return bO.connections[b2]};this.paint=function(b5){b5=b5||{};var cb=b5.timestamp,ca=!(b5.recalc===false);if(!cb||bO.timestamp!==cb){W({elId:bF,timestamp:cb,recalc:ca});var ch=b5.offset||ah[bF];if(ch){var b8=b5.anchorPoint,b6=b5.connectorPaintStyle;if(b8==null){var b2=b5.dimensions||ae[bF];if(ch==null||b2==null){W({elId:bF,timestamp:cb});ch=ah[bF];b2=ae[bF]}var b4={xy:[ch.left,ch.top],wh:b2,element:bO,timestamp:cb};if(ca&&bO.anchor.isDynamic&&bO.connections.length>0){var ce=bK(b5.elementWithPrecedence),cg=ce.endpoints[0]==bO?1:0,b7=cg==0?ce.sourceId:ce.targetId,cd=ah[b7],cf=ae[b7];b4.txy=[cd.left,cd.top];b4.twh=cf;b4.tElement=ce.endpoints[cg]}b8=bO.anchor.compute(b4)}var cc=bL.compute(b8,bO.anchor.getOrientation(bO),bO.paintStyleInUse,b6||bO.paintStyleInUse);bL.paint(cc,bO.paintStyleInUse,bO.anchor);bO.timestamp=cb;for(var b9=0;b9<bO.overlays.length;b9++){var b3=bO.overlays[b9];if(b3.isVisible){bO.overlayPlacements[b9]=b3.draw(bO.endpoint,bO.paintStyleInUse,cc)}}}}};this.repaint=this.paint;this.removeConnection=this.detach;if(p.CurrentLibrary.isDragSupported(bN)){var bT={id:null,element:null},bS=null,bw=false,bB=null,bv=bc(bT);var bD=function(){bS=bO.connectorSelector();var b2=true;if(!bO.isEnabled()){b2=false}if(bS==null&&!b0.isSource){b2=false}if(b0.isSource&&bO.isFull()&&!bI){b2=false}if(bS!=null&&!bS.isDetachable()){b2=false}if(b2===false){if(p.CurrentLibrary.stopDrag){p.CurrentLibrary.stopDrag()}bv.stopDrag();return false}if(bS&&!bO.isFull()&&b0.isSource){bS=null}W({elId:bF});bC=bO.makeInPlaceCopy();bC.paint();R(bT,bO.parent);var b8=F(bC.canvas),b6=p.CurrentLibrary.getOffset(b8),b3=bo([b6.left,b6.top],bC.canvas);p.CurrentLibrary.setOffset(bT.element,{left:b3[0],top:b3[1]});if(bO.parentAnchor){bO.anchor=bn.makeAnchor(bO.parentAnchor,bO.elementId,bn)}f(F(bO.canvas),"dragId",bT.id);f(F(bO.canvas),"elId",bF);if(b0.proxy){bO.setPaintStyle(b0.proxy.paintStyle)}bY=at(bO.getPaintStyle(),bO.anchor,bL,bO.canvas,bT.element);if(bS==null){bO.anchor.locked=true;bO.setHover(false,false);bS=ad({sourceEndpoint:bO,targetEndpoint:bY,source:bO.endpointWillMoveTo||F(bN),target:bT.element,anchors:[bO.anchor,bY.anchor],paintStyle:b0.connectorStyle,hoverPaintStyle:b0.connectorHoverStyle,connector:b0.connector,overlays:b0.connectorOverlays})}else{bw=true;bS.connector.setHover(false,false);bE(F(bC.canvas),false,true);var b5=bS.endpoints[0].id==bO.id?0:1;bS.floatingAnchorIndex=b5;bO.detachFromConnection(bS);var b9=F(bO.canvas),b7=p.CurrentLibrary.getDragScope(b9);f(b9,"originalScope",b7);var b4=p.CurrentLibrary.getDropScope(b9);p.CurrentLibrary.setDragScope(b9,b4);if(b5==0){bB=[bS.source,bS.sourceId,bW,b7];bS.source=bT.element;bS.sourceId=bT.id}else{bB=[bS.target,bS.targetId,bW,b7];bS.target=bT.element;bS.targetId=bT.id}bS.endpoints[b5==0?1:0].anchor.locked=true;bS.suspendedEndpoint=bS.endpoints[b5];bS.suspendedEndpoint.setHover(false);bS.endpoints[b5]=bY;a4(bS)}bf[bT.id]=bS;bY.addConnection(bS);V(aT,bT.id,bY);bn.currentlyDragging=true};var bz=p.CurrentLibrary,bV=b0.dragOptions||{},bP=p.extend({},bz.defaultDragOptions),bR=bz.dragEvents.start,bZ=bz.dragEvents.stop,bG=bz.dragEvents.drag;bV=p.extend(bP,bV);bV.scope=bV.scope||bO.scope;bV[bR]=am(bV[bR],bD);bV[bG]=am(bV[bG],bv.drag);bV[bZ]=am(bV[bZ],function(){var b3=bz.getDropEvent(arguments);bn.currentlyDragging=false;D(aT[bT.id],function(b4){return b4.id==bY.id});aX([bT.element[0],bY.canvas],bN);au(bC.canvas,bN);bn.anchorManager.clearFor(bT.id);var b2=bS.floatingAnchorIndex==null?1:bS.floatingAnchorIndex;bS.endpoints[b2==0?1:0].anchor.locked=false;bO.setPaintStyle(bJ);if(bS.endpoints[b2]==bY){if(bw&&bS.suspendedEndpoint){if(b2==0){bS.source=bB[0];bS.sourceId=bB[1]}else{bS.target=bB[0];bS.targetId=bB[1]}p.CurrentLibrary.setDragScope(bB[2],bB[3]);bS.endpoints[b2]=bS.suspendedEndpoint;if(bO.isReattach||bS._forceDetach||!bS.endpoints[b2==0?1:0].detach(bS,false,false,true,b3)){bS.setHover(false);bS.floatingAnchorIndex=null;bS.suspendedEndpoint.addConnection(bS);bn.repaint(bB[1])}bS._forceDetach=null}else{aX(bS.connector.getDisplayElements(),bO.parent);bO.detachFromConnection(bS)}}bO.anchor.locked=false;bO.paint({recalc:false});bS.setHover(false,false);aR(bS);bS=null;bC=null;delete aT[bY.elementId];bY.anchor=null;bY=null;bn.currentlyDragging=false});var bW=F(bO.canvas);p.CurrentLibrary.initDraggable(bW,bV,true)}var bE=function(b4,b9,b7,ca){if((b0.isTarget||b9)&&p.CurrentLibrary.isDropSupported(bN)){var b5=b0.dropOptions||bn.Defaults.DropOptions||p.Defaults.DropOptions;b5=p.extend({},b5);b5.scope=b5.scope||bO.scope;var b3=p.CurrentLibrary.dragEvents.drop,b8=p.CurrentLibrary.dragEvents.over,b2=p.CurrentLibrary.dragEvents.out,b6=function(){var cb=p.CurrentLibrary.getDropEvent(arguments),co=F(p.CurrentLibrary.getDragObject(arguments)),cc=d(co,"dragId"),cf=d(co,"elId"),cn=d(co,"originalScope"),ci=bf[cc];if(ci!=null){var ck=ci.floatingAnchorIndex==null?1:ci.floatingAnchorIndex,cl=ck==0?1:0;if(cn){p.CurrentLibrary.setDragScope(co,cn)}var cm=ca!=null?ca.isEnabled():true;if(!bO.isFull()&&!(ck==0&&!bO.isSource)&&!(ck==1&&!bO.isTarget)&&cm){var cg=true;if(ci.suspendedEndpoint&&ci.suspendedEndpoint.id!=bO.id){if(ck==0){ci.source=ci.suspendedEndpoint.element;ci.sourceId=ci.suspendedEndpoint.elementId}else{ci.target=ci.suspendedEndpoint.element;ci.targetId=ci.suspendedEndpoint.elementId}if(!ci.isDetachAllowed(ci)||!ci.endpoints[ck].isDetachAllowed(ci)||!ci.suspendedEndpoint.isDetachAllowed(ci)||!bn.checkCondition("beforeDetach",ci)){cg=false}}if(ck==0){ci.source=bO.element;ci.sourceId=bO.elementId}else{ci.target=bO.element;ci.targetId=bO.elementId}cg=cg&&bO.isDropAllowed(ci.sourceId,ci.targetId,ci.scope,ci,bO);if(cg){ci.endpoints[ck].detachFromConnection(ci);if(ci.suspendedEndpoint){ci.suspendedEndpoint.detachFromConnection(ci)}ci.endpoints[ck]=bO;bO.addConnection(ci);var ce=bO.getParameters();for(var cj in ce){ci.setParameter(cj,ce[cj])}if(!ci.suspendedEndpoint){if(ce.draggable){p.CurrentLibrary.initDraggable(bO.element,bV,true)}}else{var ch=ci.suspendedEndpoint.getElement(),cd=ci.suspendedEndpoint.elementId;a7({source:ck==0?ch:ci.source,target:ck==1?ch:ci.target,sourceId:ck==0?cd:ci.sourceId,targetId:ck==1?cd:ci.targetId,sourceEndpoint:ck==0?ci.suspendedEndpoint:ci.endpoints[0],targetEndpoint:ck==1?ci.suspendedEndpoint:ci.endpoints[1],connection:ci},true,cb)}bt(ci,null,cb)}else{if(ci.suspendedEndpoint){ci.endpoints[ck]=ci.suspendedEndpoint;ci.setHover(false);ci._forceDetach=true;if(ck==0){ci.source=ci.suspendedEndpoint.element;ci.sourceId=ci.suspendedEndpoint.elementId}else{ci.target=ci.suspendedEndpoint.element;ci.targetId=ci.suspendedEndpoint.elementId}ci.suspendedEndpoint.addConnection(ci);ci.endpoints[0].repaint();ci.repaint();bn.repaint(ci.source.elementId);ci._forceDetach=false}}ci.floatingAnchorIndex=null}bn.currentlyDragging=false;delete bf[cc]}};b5[b3]=am(b5[b3],b6);b5[b8]=am(b5[b8],function(){if(bO.isTarget){var cc=p.CurrentLibrary.getDragObject(arguments),ce=d(F(cc),"dragId"),cd=bf[ce];if(cd!=null){var cb=cd.floatingAnchorIndex==null?1:cd.floatingAnchorIndex;cd.endpoints[cb].anchor.over(bO.anchor)}}});b5[b2]=am(b5[b2],function(){if(bO.isTarget){var cc=p.CurrentLibrary.getDragObject(arguments),ce=d(F(cc),"dragId"),cd=bf[ce];if(cd!=null){var cb=cd.floatingAnchorIndex==null?1:cd.floatingAnchorIndex;cd.endpoints[cb].anchor.out()}}});p.CurrentLibrary.initDroppable(b4,b5,true,b7)}};bE(F(bO.canvas),true,!(b0._transient||bO.anchor.isFloating),bO);return bO}};var p=window.jsPlumb=new y();p.getInstance=function(L){var K=new y(L);K.init();return K};var s=function(K,P,M,L,O,N){return function(R){R=R||{};var Q=R.jsPlumbInstance.makeAnchor([K,P,M,L,0,0],R.elementId,R.jsPlumbInstance);Q.type=O;if(N){N(Q,R)}return Q}};p.Anchors.TopCenter=s(0.5,0,0,-1,"TopCenter");p.Anchors.BottomCenter=s(0.5,1,0,1,"BottomCenter");p.Anchors.LeftMiddle=s(0,0.5,-1,0,"LeftMiddle");p.Anchors.RightMiddle=s(1,0.5,1,0,"RightMiddle");p.Anchors.Center=s(0.5,0.5,0,0,"Center");p.Anchors.TopRight=s(1,0,0,-1,"TopRight");p.Anchors.BottomRight=s(1,1,0,1,"BottomRight");p.Anchors.TopLeft=s(0,0,0,-1,"TopLeft");p.Anchors.BottomLeft=s(0,1,0,1,"BottomLeft");p.Defaults.DynamicAnchors=function(K){return K.jsPlumbInstance.makeAnchors(["TopCenter","RightMiddle","BottomCenter","LeftMiddle"],K.elementId,K.jsPlumbInstance)};p.Anchors.AutoDefault=function(L){var K=L.jsPlumbInstance.makeDynamicAnchor(p.Defaults.DynamicAnchors(L));K.type="AutoDefault";return K};p.Anchors.Assign=s(0,0,0,0,"Assign",function(L,M){var K=M.position||"Fixed";L.positionFinder=K.constructor==String?M.jsPlumbInstance.AnchorPositionFinders[K]:K;L.constructorParams=M});p.Anchors.Continuous=function(K){return K.jsPlumbInstance.continuousAnchorFactory.get(K)};p.AnchorPositionFinders={Fixed:function(N,K,M,L){return[(N.left-K.left)/M[0],(N.top-K.top)/M[1]]},Grid:function(K,T,O,L){var S=K.left-T.left,R=K.top-T.top,Q=O[0]/(L.grid[0]),P=O[1]/(L.grid[1]),N=Math.floor(S/Q),M=Math.floor(R/P);return[((N*Q)+(Q/2))/O[0],((M*P)+(P/2))/O[1]]}}})();(function(){jsPlumb.DOMElementComponent=function(c){jsPlumb.jsPlumbUIComponent.apply(this,arguments);this.mousemove=this.dblclick=this.click=this.mousedown=this.mouseup=function(d){}};jsPlumb.Connectors.Straight=function(){this.type="Straight";var r=this,i=null,e,k,p,n,l,f,q,h,g,d,c,o,m;this.compute=function(A,J,s,z,F,t,D,v){var I=Math.abs(A[0]-J[0]),C=Math.abs(A[1]-J[1]),B=0.45*I,u=0.45*C;I*=1.9;C*=1.9;var G=Math.min(A[0],J[0])-B;var E=Math.min(A[1],J[1])-u;var H=Math.max(2*D,v);if(I<H){I=H;G=A[0]+((J[0]-A[0])/2)-(H/2);B=(I-Math.abs(A[0]-J[0]))/2}if(C<H){C=H;E=A[1]+((J[1]-A[1])/2)-(H/2);u=(C-Math.abs(A[1]-J[1]))/2}h=A[0]<J[0]?B:I-B;g=A[1]<J[1]?u:C-u;d=A[0]<J[0]?I-B:B;c=A[1]<J[1]?C-u:u;i=[G,E,I,C,h,g,d,c];n=d-h,l=c-g;e=jsPlumbUtil.gradient({x:h,y:g},{x:d,y:c}),k=-1/e;p=-1*((e*h)-g);f=Math.atan(e);q=Math.atan(k);m=Math.sqrt((n*n)+(l*l));return i};this.pointOnPath=function(t,u){if(t==0&&!u){return{x:h,y:g}}else{if(t==1&&!u){return{x:d,y:c}}else{var s=u?t>0?t:m+t:t*m;return jsPlumbUtil.pointOnLine({x:h,y:g},{x:d,y:c},s)}}};this.gradientAtPoint=function(s){return e};this.pointAlongPathFrom=function(s,w,v){var u=r.pointOnPath(s,v),t=s==1?{x:h+((d-h)*10),y:g+((g-c)*10)}:{x:d,y:c};return jsPlumbUtil.pointOnLine(u,t,w)}};jsPlumb.Connectors.Bezier=function(v){var p=this;v=v||{};this.majorAnchor=v.curviness||150;this.minorAnchor=10;var t=null;this.type="Bezier";this._findControlPoint=function(H,w,C,x,A,F,y){var E=F.getOrientation(x),G=y.getOrientation(A),B=E[0]!=G[0]||E[1]==G[1],z=[],I=p.majorAnchor,D=p.minorAnchor;if(!B){if(E[0]==0){z.push(w[0]<C[0]?H[0]+D:H[0]-D)}else{z.push(H[0]-(I*E[0]))}if(E[1]==0){z.push(w[1]<C[1]?H[1]+D:H[1]-D)}else{z.push(H[1]+(I*G[1]))}}else{if(G[0]==0){z.push(C[0]<w[0]?H[0]+D:H[0]-D)}else{z.push(H[0]+(I*G[0]))}if(G[1]==0){z.push(C[1]<w[1]?H[1]+D:H[1]-D)}else{z.push(H[1]+(I*E[1]))}}return z};var q,l,f,o,n,f,e,s,r,u,d,h,g,k,i;this.compute=function(S,z,M,A,Q,x,w,L){w=w||0;u=Math.abs(S[0]-z[0])+w;d=Math.abs(S[1]-z[1])+w;s=Math.min(S[0],z[0])-(w/2);r=Math.min(S[1],z[1])-(w/2);f=S[0]<z[0]?u-(w/2):(w/2);e=S[1]<z[1]?d-(w/2):(w/2);o=S[0]<z[0]?(w/2):u-(w/2);n=S[1]<z[1]?(w/2):d-(w/2);q=p._findControlPoint([f,e],S,z,M,A,Q,x);l=p._findControlPoint([o,n],z,S,A,M,x,Q);var K=Math.min(f,o),J=Math.min(q[0],l[0]),F=Math.min(K,J),R=Math.max(f,o),O=Math.max(q[0],l[0]),C=Math.max(R,O);if(C>u){u=C}if(F<0){s+=F;var H=Math.abs(F);u+=H;q[0]+=H;f+=H;o+=H;l[0]+=H}var P=Math.min(e,n),N=Math.min(q[1],l[1]),B=Math.min(P,N),G=Math.max(e,n),E=Math.max(q[1],l[1]),y=Math.max(G,E);if(y>d){d=y}if(B<0){r+=B;var D=Math.abs(B);d+=D;q[1]+=D;e+=D;n+=D;l[1]+=D}if(L&&u<L){var I=(L-u)/2;u=L;s-=I;f=f+I;o=o+I;q[0]=q[0]+I;l[0]=l[0]+I}if(L&&d<L){var I=(L-d)/2;d=L;r-=I;e=e+I;n=n+I;q[1]=q[1]+I;l[1]=l[1]+I}t=[s,r,u,d,f,e,o,n,q[0],q[1],l[0],l[1]];return t};var c=function(){return[{x:f,y:e},{x:q[0],y:q[1]},{x:l[0],y:l[1]},{x:o,y:n}]};var m=function(x,w,y){if(y){w=jsBezier.locationAlongCurveFrom(x,w>0?0:1,w)}return w};this.pointOnPath=function(w,y){var x=c();w=m(x,w,y);return jsBezier.pointOnCurve(x,w)};this.gradientAtPoint=function(w,y){var x=c();w=m(x,w,y);return jsBezier.gradientAtPoint(x,w)};this.pointAlongPathFrom=function(w,z,y){var x=c();w=m(x,w,y);return jsBezier.pointAlongCurveFrom(x,w,z)}};jsPlumb.Connectors.Flowchart=function(v){this.type="Flowchart";v=v||{};var n=this,c=v.stub||v.minStubLength||30,f=jsPlumbUtil.isArray(c)?c[0]:c,k=jsPlumbUtil.isArray(c)?c[1]:c,p=v.gap||0,q=[],i=0,d=[],m=[],r=[],o,l,u=-Infinity,s=-Infinity,w=Infinity,t=Infinity,x=function(z,y,D,C){var B=0;for(var A=0;A<q.length;A++){m[A]=q[A][5]/i;d[A]=[B,(B+=(q[A][5]/i))]}},h=function(){r.push(q.length);for(var y=0;y<q.length;y++){r.push(q[y][0]);r.push(q[y][1])}},g=function(I,F,H,G,E,D){var A=q.length==0?H:q[q.length-1][0],z=q.length==0?G:q[q.length-1][1],B=I==A?Infinity:0,C=Math.abs(I==A?F-z:I-A);q.push([I,F,A,z,B,C]);i+=C;u=Math.max(u,I);s=Math.max(s,F);w=Math.min(w,I);t=Math.min(t,F)},e=function(A,C){if(C){A=A>0?A/i:(i+A)/i}var y=d.length-1,z=1;for(var B=0;B<d.length;B++){if(d[B][1]>=A){y=B;z=(A-d[B][0])/m[B];break}}return{segment:q[y],proportion:z,index:y}};this.compute=function(W,ak,z,Q,av,K,U,P,ap,am){q=[];d=[];i=0;m=[];u=s=-Infinity;w=t=Infinity;o=ak[0]<W[0];l=ak[1]<W[1];var aa=U||1,E=(aa/2)+(f+k),B=(aa/2)+(k+f),D=(aa/2)+(f+k),A=(aa/2)+(k+f),N=av.orientation||av.getOrientation(z),aw=K.orientation||K.getOrientation(Q),aj=o?ak[0]:W[0],ai=l?ak[1]:W[1],al=Math.abs(ak[0]-W[0])+E+B,au=Math.abs(ak[1]-W[1])+D+A;if(N[0]==0&&N[1]==0||aw[0]==0&&aw[1]==0){var ac=al>au?0:1,ae=[1,0][ac];N=[];aw=[];N[ac]=W[ac]>ak[ac]?-1:1;aw[ac]=W[ac]>ak[ac]?1:-1;N[ae]=0;aw[ae]=0}if(al<P){E+=(P-al)/2;al=P}if(au<P){D+=(P-au)/2;au=P}var I=o?(al-B)+(p*N[0]):E+(p*N[0]),H=l?(au-A)+(p*N[1]):D+(p*N[1]),ar=o?E+(p*aw[0]):(al-B)+(p*aw[0]),aq=l?D+(p*aw[1]):(au-A)+(p*aw[1]),Z=I+(N[0]*f),Y=H+(N[1]*f),L=ar+(aw[0]*k),J=aq+(aw[1]*k),V=Math.abs(I-ar)>(f+k),X=Math.abs(H-aq)>(f+k),ah=Z+((L-Z)/2),af=Y+((J-Y)/2),O=((N[0]*aw[0])+(N[1]*aw[1])),ab=O==-1,ad=O==0,C=O==1;aj-=E;ai-=D;r=[aj,ai,al,au,I,H,ar,aq];var ao=[];var S=N[0]==0?"y":"x",M=ab?"opposite":C?"orthogonal":"perpendicular",F=jsPlumbUtil.segment([I,H],[ar,aq]),ag=N[S=="x"?0:1]==-1,R={x:[null,4,3,2,1],y:[null,2,1,4,3]};if(ag){F=R[S][F]}g(Z,Y,I,H,ar,aq);var T=function(az,ay,y,ax){return az+(ay*((1-y)*ax)+Math.max(f,k))},G={oppositex:function(){if(z.elementId==Q.elementId){var y=Y+((1-av.y)*ap.height)+Math.max(f,k);return[[Z,y],[L,y]]}else{if(V&&(F==1||F==2)){return[[ah,H],[ah,aq]]}else{return[[Z,af],[L,af]]}}},orthogonalx:function(){if(F==1||F==2){return[[L,Y]]}else{return[[Z,J]]}},perpendicularx:function(){var y=(aq+H)/2;if((F==1&&aw[1]==1)||(F==2&&aw[1]==-1)){if(Math.abs(ar-I)>Math.max(f,k)){return[[L,Y]]}else{return[[Z,Y],[Z,y],[L,y]]}}else{if((F==3&&aw[1]==-1)||(F==4&&aw[1]==1)){return[[Z,y],[L,y]]}else{if((F==3&&aw[1]==1)||(F==4&&aw[1]==-1)){return[[Z,J]]}else{if((F==1&&aw[1]==-1)||(F==2&&aw[1]==1)){if(Math.abs(ar-I)>Math.max(f,k)){return[[ah,Y],[ah,J]]}else{return[[Z,J]]}}}}}},oppositey:function(){if(z.elementId==Q.elementId){var y=Z+((1-av.x)*ap.width)+Math.max(f,k);return[[y,Y],[y,J]]}else{if(X&&(F==2||F==3)){return[[I,af],[ar,af]]}else{return[[ah,Y],[ah,J]]}}},orthogonaly:function(){if(F==2||F==3){return[[Z,J]]}else{return[[L,Y]]}},perpendiculary:function(){var y=(ar+I)/2;if((F==2&&aw[0]==-1)||(F==3&&aw[0]==1)){if(Math.abs(ar-I)>Math.max(f,k)){return[[Z,J]]}else{return[[Z,af],[L,af]]}}else{if((F==1&&aw[0]==-1)||(F==4&&aw[0]==1)){var y=(ar+I)/2;return[[y,Y],[y,J]]}else{if((F==1&&aw[0]==1)||(F==4&&aw[0]==-1)){return[[L,Y]]}else{if((F==2&&aw[0]==1)||(F==3&&aw[0]==-1)){if(Math.abs(aq-H)>Math.max(f,k)){return[[Z,af],[L,af]]}else{return[[L,Y]]}}}}}}};var an=G[M+S]();if(an){for(var at=0;at<an.length;at++){g(an[at][0],an[at][1],I,H,ar,aq)}}g(L,J,I,H,ar,aq);g(ar,aq,I,H,ar,aq);h();x(I,H,ar,aq);if(s>r[3]){r[3]=s+(U*2)}if(u>r[2]){r[2]=u+(U*2)}return r};this.pointOnPath=function(y,z){return n.pointAlongPathFrom(y,0,z)};this.gradientAtPoint=function(y,z){return q[e(y,z)["index"]][4]};this.pointAlongPathFrom=function(F,y,E){var G=e(F,E),C=G.segment,z=G.proportion,B=q[G.index][5],A=q[G.index][4];var D={x:A==Infinity?C[2]:C[2]>C[0]?C[0]+((1-z)*B)-y:C[2]+(z*B)+y,y:A==0?C[3]:C[3]>C[1]?C[1]+((1-z)*B)-y:C[3]+(z*B)+y,segmentInfo:G};return D}};jsPlumb.Endpoints.Dot=function(d){this.type="Dot";var c=this;d=d||{};this.radius=d.radius||10;this.defaultOffset=0.5*this.radius;this.defaultInnerRadius=this.radius/3;this.compute=function(i,f,l,h){var g=l.radius||c.radius,e=i[0]-g,k=i[1]-g;return[e,k,g*2,g*2,g]}};jsPlumb.Endpoints.Rectangle=function(d){this.type="Rectangle";var c=this;d=d||{};this.width=d.width||20;this.height=d.height||20;this.compute=function(k,g,m,i){var h=m.width||c.width,f=m.height||c.height,e=k[0]-(h/2),l=k[1]-(f/2);return[e,l,h,f]}};var a=function(e){jsPlumb.DOMElementComponent.apply(this,arguments);var c=this;var d=[];this.getDisplayElements=function(){return d};this.appendDisplayElement=function(f){d.push(f)}};jsPlumb.Endpoints.Image=function(g){this.type="Image";a.apply(this,arguments);var l=this,f=false,e=g.width,d=g.height,i=null,c=g.endpoint;this.img=new Image();l.ready=false;this.img.onload=function(){l.ready=true;e=e||l.img.width;d=d||l.img.height;if(i){i(l)}};c.setImage=function(m,o){var n=m.constructor==String?m:m.src;i=o;l.img.src=m;if(l.canvas!=null){l.canvas.setAttribute("src",m)}};c.setImage(g.src||g.url,g.onload);this.compute=function(o,m,p,n){l.anchorPoint=o;if(l.ready){return[o[0]-e/2,o[1]-d/2,e,d]}else{return[0,0,0,0]}};l.canvas=document.createElement("img"),f=false;l.canvas.style.margin=0;l.canvas.style.padding=0;l.canvas.style.outline=0;l.canvas.style.position="absolute";var h=g.cssClass?" "+g.cssClass:"";l.canvas.className=jsPlumb.endpointClass+h;if(e){l.canvas.setAttribute("width",e)}if(d){l.canvas.setAttribute("height",d)}jsPlumb.appendElement(l.canvas,g.parent);l.attachListeners(l.canvas,l);var k=function(p,o,n){if(!f){l.canvas.setAttribute("src",l.img.src);l.appendDisplayElement(l.canvas);f=true}var m=l.anchorPoint[0]-(e/2),q=l.anchorPoint[1]-(d/2);jsPlumb.sizeCanvas(l.canvas,m,q,e,d)};this.paint=function(o,n,m){if(l.ready){k(o,n,m)}else{window.setTimeout(function(){l.paint(o,n,m)},200)}}};jsPlumb.Endpoints.Blank=function(d){var c=this;this.type="Blank";a.apply(this,arguments);this.compute=function(g,e,h,f){return[g[0],g[1],10,0]};c.canvas=document.createElement("div");c.canvas.style.display="block";c.canvas.style.width="1px";c.canvas.style.height="1px";c.canvas.style.background="transparent";c.canvas.style.position="absolute";c.canvas.className=c._jsPlumb.endpointClass;jsPlumb.appendElement(c.canvas,d.parent);this.paint=function(g,f,e){jsPlumb.sizeCanvas(c.canvas,g[0],g[1],g[2],g[3])}};jsPlumb.Endpoints.Triangle=function(c){this.type="Triangle";c=c||{};c.width=c.width||55;c.height=c.height||55;this.width=c.width;this.height=c.height;this.compute=function(i,f,l,h){var g=l.width||self.width,e=l.height||self.height,d=i[0]-(g/2),k=i[1]-(e/2);return[d,k,g,e]}};var b=function(e){var d=true,c=this;this.isAppendedAtTopLevel=true;this.component=e.component;this.loc=e.location==null?0.5:e.location;this.endpointLoc=e.endpointLocation==null?[0.5,0.5]:e.endpointLocation;this.setVisible=function(f){d=f;c.component.repaint()};this.isVisible=function(){return d};this.hide=function(){c.setVisible(false)};this.show=function(){c.setVisible(true)};this.incrementLocation=function(f){c.loc+=f;c.component.repaint()};this.setLocation=function(f){c.loc=f;c.component.repaint()};this.getLocation=function(){return c.loc}};jsPlumb.Overlays.Arrow=function(g){this.type="Arrow";b.apply(this,arguments);this.isAppendedAtTopLevel=false;g=g||{};var d=this;this.length=g.length||20;this.width=g.width||20;this.id=g.id;var f=(g.direction||1)<0?-1:1,e=g.paintStyle||{lineWidth:1},c=g.foldback||0.623;this.computeMaxSize=function(){return d.width*1.5};this.cleanup=function(){};this.draw=function(k,z,u){var o,v,h,p,n;if(k.pointAlongPathFrom){if(jsPlumbUtil.isString(d.loc)||d.loc>1||d.loc<0){var i=parseInt(d.loc);o=k.pointAlongPathFrom(i,f*d.length/2,true),v=k.pointOnPath(i,true),h=jsPlumbUtil.pointOnLine(o,v,d.length)}else{if(d.loc==1){o=k.pointOnPath(d.loc);v=k.pointAlongPathFrom(d.loc,-1);h=jsPlumbUtil.pointOnLine(o,v,d.length)}else{if(d.loc==0){h=k.pointOnPath(d.loc);v=k.pointAlongPathFrom(d.loc,1);o=jsPlumbUtil.pointOnLine(h,v,d.length)}else{o=k.pointAlongPathFrom(d.loc,f*d.length/2),v=k.pointOnPath(d.loc),h=jsPlumbUtil.pointOnLine(o,v,d.length)}}}p=jsPlumbUtil.perpendicularLineTo(o,h,d.width);n=jsPlumbUtil.pointOnLine(o,h,c*d.length);var y=Math.min(o.x,p[0].x,p[1].x),s=Math.max(o.x,p[0].x,p[1].x),x=Math.min(o.y,p[0].y,p[1].y),r=Math.max(o.y,p[0].y,p[1].y);var q={hxy:o,tail:p,cxy:n},t=e.strokeStyle||z.strokeStyle,w=e.fillStyle||z.strokeStyle,m=e.lineWidth||z.lineWidth;d.paint(k,q,m,t,w,u);return[y,s,x,r]}else{return[0,0,0,0]}}};jsPlumb.Overlays.PlainArrow=function(d){d=d||{};var c=jsPlumb.extend(d,{foldback:1});jsPlumb.Overlays.Arrow.call(this,c);this.type="PlainArrow"};jsPlumb.Overlays.Diamond=function(e){e=e||{};var c=e.length||40,d=jsPlumb.extend(e,{length:c/2,foldback:2});jsPlumb.Overlays.Arrow.call(this,d);this.type="Diamond"};jsPlumb.Overlays.Label=function(i){this.type="Label";jsPlumb.DOMElementComponent.apply(this,arguments);b.apply(this,arguments);this.labelStyle=i.labelStyle||jsPlumb.Defaults.LabelStyle;this.id=i.id;this.cachedDimensions=null;var e=i.label||"",c=this,f=false,k=document.createElement("div"),g=null;k.style.position="absolute";var d=i._jsPlumb.overlayClass+" "+(c.labelStyle.cssClass?c.labelStyle.cssClass:i.cssClass?i.cssClass:"");k.className=d;jsPlumb.appendElement(k,i.component.parent);jsPlumb.getId(k);c.attachListeners(k,c);c.canvas=k;var h=c.setVisible;c.setVisible=function(l){h(l);k.style.display=l?"block":"none"};this.getElement=function(){return k};this.cleanup=function(){if(k!=null){jsPlumb.CurrentLibrary.removeElement(k)}};this.setLabel=function(m){e=m;g=null;c.component.repaint()};this.getLabel=function(){return e};this.paint=function(l,n,m){if(!f){l.appendDisplayElement(k);c.attachListeners(k,l);f=true}k.style.left=(m[0]+n.minx)+"px";k.style.top=(m[1]+n.miny)+"px"};this.getTextDimensions=function(){if(typeof e=="function"){var l=e(c);k.innerHTML=l.replace(/\r\n/g,"<br/>")}else{if(g==null){g=e;k.innerHTML=g.replace(/\r\n/g,"<br/>")}}var n=jsPlumb.CurrentLibrary.getElementObject(k),m=jsPlumb.CurrentLibrary.getSize(n);return{width:m[0],height:m[1]}};this.computeMaxSize=function(l){var m=c.getTextDimensions(l);return m.width?Math.max(m.width,m.height)*1.5:0};this.draw=function(m,n,o){var s=c.getTextDimensions(m);if(s.width!=null){var p={x:0,y:0};if(m.pointOnPath){var q=c.loc,r=false;if(jsPlumbUtil.isString(c.loc)||c.loc<0||c.loc>1){q=parseInt(c.loc);r=true}p=m.pointOnPath(q,r)}else{var l=c.loc.constructor==Array?c.loc:c.endpointLoc;p={x:l[0]*o[2],y:l[1]*o[3]}}minx=p.x-(s.width/2),miny=p.y-(s.height/2);c.paint(m,{minx:minx,miny:miny,td:s,cxy:p},o);return[minx,minx+s.width,miny,miny+s.height]}else{return[0,0,0,0]}};this.reattachListeners=function(l){if(k){c.reattachListenersForElement(k,c,l)}}};jsPlumb.Overlays.GuideLines=function(){var c=this;c.length=50;c.lineWidth=5;this.type="GuideLines";b.apply(this,arguments);jsPlumb.jsPlumbUIComponent.apply(this,arguments);this.draw=function(e,l,k){var i=e.pointAlongPathFrom(c.loc,c.length/2),h=e.pointOnPath(c.loc),g=jsPlumbUtil.pointOnLine(i,h,c.length),f=jsPlumbUtil.perpendicularLineTo(i,g,40),d=jsPlumbUtil.perpendicularLineTo(g,i,20);c.paint(e,[i,g,f,d],c.lineWidth,"red",null,k);return[Math.min(i.x,g.x),Math.min(i.y,g.y),Math.max(i.x,g.x),Math.max(i.y,g.y)]};this.computeMaxSize=function(){return 50};this.cleanup=function(){}}})();(function(){var c=function(e,g,d,f){this.m=(f-g)/(d-e);this.b=-1*((this.m*e)-g);this.rectIntersect=function(q,p,s,o){var n=[];var k=(p-this.b)/this.m;if(k>=q&&k<=(q+s)){n.push([k,(this.m*k)+this.b])}var t=(this.m*(q+s))+this.b;if(t>=p&&t<=(p+o)){n.push([(t-this.b)/this.m,t])}var k=((p+o)-this.b)/this.m;if(k>=q&&k<=(q+s)){n.push([k,(this.m*k)+this.b])}var t=(this.m*q)+this.b;if(t>=p&&t<=(p+o)){n.push([(t-this.b)/this.m,t])}if(n.length==2){var m=(n[0][0]+n[1][0])/2,l=(n[0][1]+n[1][1])/2;n.push([m,l]);var i=m<=q+(s/2)?-1:1,r=l<=p+(o/2)?-1:1;n.push([i,r]);return n}return null}},a=function(e,g,d,f){if(e<=d&&f<=g){return 1}else{if(e<=d&&g<=f){return 2}else{if(d<=e&&f>=g){return 3}}}return 4},b=function(g,f,i,e,h,m,l,d,k){if(d<=k){return[g,f]}if(i==1){if(e[3]<=0&&h[3]>=1){return[g+(e[2]<0.5?-1*m:m),f]}else{if(e[2]>=1&&h[2]<=0){return[g,f+(e[3]<0.5?-1*l:l)]}else{return[g+(-1*m),f+(-1*l)]}}}else{if(i==2){if(e[3]>=1&&h[3]<=0){return[g+(e[2]<0.5?-1*m:m),f]}else{if(e[2]>=1&&h[2]<=0){return[g,f+(e[3]<0.5?-1*l:l)]}else{return[g+(1*m),f+(-1*l)]}}}else{if(i==3){if(e[3]>=1&&h[3]<=0){return[g+(e[2]<0.5?-1*m:m),f]}else{if(e[2]<=0&&h[2]>=1){return[g,f+(e[3]<0.5?-1*l:l)]}else{return[g+(-1*m),f+(-1*l)]}}}else{if(i==4){if(e[3]<=0&&h[3]>=1){return[g+(e[2]<0.5?-1*m:m),f]}else{if(e[2]<=0&&h[2]>=1){return[g,f+(e[3]<0.5?-1*l:l)]}else{return[g+(1*m),f+(-1*l)]}}}}}}};jsPlumb.Connectors.StateMachine=function(l){var u=this,n=null,o,m,g,e,p=[],d=l.curviness||10,k=l.margin||5,q=l.proximityLimit||80,f=l.orientation&&l.orientation=="clockwise",i=l.loopbackRadius||25,h=false,t=l.showLoopback!==false;this.type="StateMachine";l=l||{};this.compute=function(ad,H,W,I,ac,z,v,U){var Q=Math.abs(ad[0]-H[0]),Y=Math.abs(ad[1]-H[1]),S=0.45*Q,ab=0.45*Y;Q*=1.9;Y*=1.9;v=v||1;var O=Math.min(ad[0],H[0])-S,M=Math.min(ad[1],H[1])-ab;if(!t||(W.elementId!=I.elementId)){h=false;o=ad[0]<H[0]?S:Q-S;m=ad[1]<H[1]?ab:Y-ab;g=ad[0]<H[0]?Q-S:S;e=ad[1]<H[1]?Y-ab:ab;if(ad[2]==0){o-=k}if(ad[2]==1){o+=k}if(ad[3]==0){m-=k}if(ad[3]==1){m+=k}if(H[2]==0){g-=k}if(H[2]==1){g+=k}if(H[3]==0){e-=k}if(H[3]==1){e+=k}var N=(o+g)/2,L=(m+e)/2,A=(-1*N)/L,V=Math.atan(A),P=(A==Infinity||A==-Infinity)?0:Math.abs(d/2*Math.sin(V)),R=(A==Infinity||A==-Infinity)?0:Math.abs(d/2*Math.cos(V)),B=a(o,m,g,e),J=Math.sqrt(Math.pow(g-o,2)+Math.pow(e-m,2));p=b(N,L,B,ad,H,d,d,J,q);var G=Math.max(Math.abs(p[0]-o)*3,Math.abs(p[0]-g)*3,Math.abs(g-o),2*v,U),K=Math.max(Math.abs(p[1]-m)*3,Math.abs(p[1]-e)*3,Math.abs(e-m),2*v,U);if(Q<G){var T=G-Q;O-=(T/2);o+=(T/2);g+=(T/2);Q=G;p[0]+=(T/2)}if(Y<K){var aa=K-Y;M-=(aa/2);m+=(aa/2);e+=(aa/2);Y=K;p[1]+=(aa/2)}n=[O,M,Q,Y,o,m,g,e,p[0],p[1]]}else{h=true;var Z=ad[0],X=ad[0],F=ad[1]-k,D=ad[1]-k,E=Z,C=F-i;Q=((2*v)+(4*i)),Y=((2*v)+(4*i));O=E-i-v-i,M=C-i-v-i;n=[O,M,Q,Y,E-O,C-M,i,f,Z-O,F-M,X-O,D-M]}return n};var r=function(){return[{x:g,y:e},{x:p[0],y:p[1]},{x:p[0]+1,y:p[1]+1},{x:o,y:m}]};var s=function(w,v,x){if(x){v=jsBezier.locationAlongCurveFrom(w,v>0?0:1,v)}return v};this.pointOnPath=function(x,B){if(h){if(B){var y=Math.PI*2*i;x=x/y}if(x>0&&x<1){x=1-x}var z=(x*2*Math.PI)+(Math.PI/2),w=n[4]+(n[6]*Math.cos(z)),v=n[5]+(n[6]*Math.sin(z));return{x:w,y:v}}else{var A=r();x=s(A,x,B);return jsBezier.pointOnCurve(A,x)}};this.gradientAtPoint=function(v,y){if(h){if(y){var w=Math.PI*2*i;v=v/w}return Math.atan(v*2*Math.PI)}else{var x=r();v=s(x,v,y);return jsBezier.gradientAtPoint(x,v)}};this.pointAlongPathFrom=function(D,v,C){if(h){if(C){var B=Math.PI*2*i;D=D/B}if(D>0&&D<1){D=1-D}var B=2*Math.PI*n[6],w=v/B*2*Math.PI,z=(D*2*Math.PI)-w+(Math.PI/2),y=n[4]+(n[6]*Math.cos(z)),x=n[5]+(n[6]*Math.sin(z));return{x:y,y:x}}else{var A=r();D=s(A,D,C);return jsBezier.pointAlongCurveFrom(A,D,v)}}};jsPlumb.Connectors.canvas.StateMachine=function(f){f=f||{};var d=this,g=f.drawGuideline||true,e=f.avoidSelector;jsPlumb.Connectors.StateMachine.apply(this,arguments);jsPlumb.CanvasConnector.apply(this,arguments);this._paint=function(l){if(l.length==10){d.ctx.beginPath();d.ctx.moveTo(l[4],l[5]);d.ctx.bezierCurveTo(l[8],l[9],l[8],l[9],l[6],l[7]);d.ctx.stroke()}else{d.ctx.save();d.ctx.beginPath();var k=0,i=2*Math.PI,h=l[7];d.ctx.arc(l[4],l[5],l[6],0,i,h);d.ctx.stroke();d.ctx.closePath();d.ctx.restore()}};this.createGradient=function(i,h){return h.createLinearGradient(i[4],i[5],i[6],i[7])}};jsPlumb.Connectors.svg.StateMachine=function(){var d=this;jsPlumb.Connectors.StateMachine.apply(this,arguments);jsPlumb.SvgConnector.apply(this,arguments);this.getPath=function(e){if(e.length==10){return"M "+e[4]+" "+e[5]+" C "+e[8]+" "+e[9]+" "+e[8]+" "+e[9]+" "+e[6]+" "+e[7]}else{return"M"+(e[8]+4)+" "+e[9]+" A "+e[6]+" "+e[6]+" 0 1,0 "+(e[8]-4)+" "+e[9]}}};jsPlumb.Connectors.vml.StateMachine=function(){jsPlumb.Connectors.StateMachine.apply(this,arguments);jsPlumb.VmlConnector.apply(this,arguments);var d=jsPlumb.vml.convertValue;this.getPath=function(k){if(k.length==10){return"m"+d(k[4])+","+d(k[5])+" c"+d(k[8])+","+d(k[9])+","+d(k[8])+","+d(k[9])+","+d(k[6])+","+d(k[7])+" e"}else{var h=d(k[8]-k[6]),g=d(k[9]-(2*k[6])),f=h+d(2*k[6]),e=g+d(2*k[6]),l=h+","+g+","+f+","+e;var i="ar "+l+","+d(k[8])+","+d(k[9])+","+d(k[8])+","+d(k[9])+" e";return i}}}})();(function(){var h={"stroke-linejoin":"joinstyle",joinstyle:"joinstyle",endcap:"endcap",miterlimit:"miterlimit"},c=null;if(document.createStyleSheet&&document.namespaces){var m=[".jsplumb_vml","jsplumb\\:textbox","jsplumb\\:oval","jsplumb\\:rect","jsplumb\\:stroke","jsplumb\\:shape","jsplumb\\:group"],g="behavior:url(#default#VML);position:absolute;";c=document.createStyleSheet();for(var r=0;r<m.length;r++){c.addRule(m[r],g)}document.namespaces.add("jsplumb","urn:schemas-microsoft-com:vml")}jsPlumb.vml={};var t=1000,s={},a=function(u,i){var w=jsPlumb.getId(u),v=s[w];if(!v){v=f("group",[0,0,t,t],{"class":i});v.style.backgroundColor="red";s[w]=v;jsPlumb.appendElement(v,u)}return v},e=function(v,w){for(var u in w){v[u]=w[u]}},f=function(u,x,y,v,i){y=y||{};var w=document.createElement("jsplumb:"+u);i.appendElement(w,v);w.className=(y["class"]?y["class"]+" ":"")+"jsplumb_vml";k(w,x);e(w,y);return w},k=function(u,i){u.style.left=i[0]+"px";u.style.top=i[1]+"px";u.style.width=i[2]+"px";u.style.height=i[3]+"px";u.style.position="absolute"},p=jsPlumb.vml.convertValue=function(i){return Math.floor(i*t)},b=function(w,u,v,i){if("transparent"===u){i.setOpacity(v,"0.0")}else{i.setOpacity(v,"1.0")}},q=function(y,u,B,C){var x={};if(u.strokeStyle){x.stroked="true";var D=jsPlumbUtil.convertStyle(u.strokeStyle,true);x.strokecolor=D;b(x,D,"stroke",B);x.strokeweight=u.lineWidth+"px"}else{x.stroked="false"}if(u.fillStyle){x.filled="true";var v=jsPlumbUtil.convertStyle(u.fillStyle,true);x.fillcolor=v;b(x,v,"fill",B)}else{x.filled="false"}if(u.dashstyle){if(B.strokeNode==null){B.strokeNode=f("stroke",[0,0,0,0],{dashstyle:u.dashstyle},y,C)}else{B.strokeNode.dashstyle=u.dashstyle}}else{if(u["stroke-dasharray"]&&u.lineWidth){var E=u["stroke-dasharray"].indexOf(",")==-1?" ":",",z=u["stroke-dasharray"].split(E),w="";for(var A=0;A<z.length;A++){w+=(Math.floor(z[A]/u.lineWidth)+E)}if(B.strokeNode==null){B.strokeNode=f("stroke",[0,0,0,0],{dashstyle:w},y,C)}else{B.strokeNode.dashstyle=w}}}e(y,x)},n=function(){var i=this;jsPlumb.jsPlumbUIComponent.apply(this,arguments);this.opacityNodes={stroke:null,fill:null};this.initOpacityNodes=function(v){i.opacityNodes.stroke=f("stroke",[0,0,1,1],{opacity:"0.0"},v,i._jsPlumb);i.opacityNodes.fill=f("fill",[0,0,1,1],{opacity:"0.0"},v,i._jsPlumb)};this.setOpacity=function(v,x){var w=i.opacityNodes[v];if(w){w.opacity=""+x}};var u=[];this.getDisplayElements=function(){return u};this.appendDisplayElement=function(w,v){if(!v){i.canvas.parentNode.appendChild(w)}u.push(w)}},d=jsPlumb.VmlConnector=function(v){var i=this;i.strokeNode=null;i.canvas=null;n.apply(this,arguments);var u=i._jsPlumb.connectorClass+(v.cssClass?(" "+v.cssClass):"");this.paint=function(A,x,z){if(x!=null){var E=i.getPath(A),y={path:E};if(x.outlineColor){var C=x.outlineWidth||1,D=x.lineWidth+(2*C),B={strokeStyle:jsPlumbUtil.convertStyle(x.outlineColor),lineWidth:D};for(var w in h){B[w]=x[w]}if(i.bgCanvas==null){y["class"]=u;y.coordsize=(A[2]*t)+","+(A[3]*t);i.bgCanvas=f("shape",A,y,v.parent,i._jsPlumb);k(i.bgCanvas,A);i.appendDisplayElement(i.bgCanvas,true);i.attachListeners(i.bgCanvas,i);i.initOpacityNodes(i.bgCanvas,["stroke"])}else{y.coordsize=(A[2]*t)+","+(A[3]*t);k(i.bgCanvas,A);e(i.bgCanvas,y)}q(i.bgCanvas,B,i)}if(i.canvas==null){y["class"]=u;y.coordsize=(A[2]*t)+","+(A[3]*t);if(i.tooltip){y.label=i.tooltip}i.canvas=f("shape",A,y,v.parent,i._jsPlumb);i.appendDisplayElement(i.canvas,true);i.attachListeners(i.canvas,i);i.initOpacityNodes(i.canvas,["stroke"])}else{y.coordsize=(A[2]*t)+","+(A[3]*t);k(i.canvas,A);e(i.canvas,y)}q(i.canvas,x,i,i._jsPlumb)}};this.reattachListeners=function(){if(i.canvas){i.reattachListenersForElement(i.canvas,i)}}},l=window.VmlEndpoint=function(y){n.apply(this,arguments);var i=null,v=this,u=null,x=null;v.canvas=document.createElement("div");v.canvas.style.position="absolute";var w=v._jsPlumb.endpointClass+(y.cssClass?(" "+y.cssClass):"");y._jsPlumb.appendElement(v.canvas,y.parent);if(v.tooltip){v.canvas.setAttribute("label",v.tooltip)}this.paint=function(C,A,z){var B={};jsPlumb.sizeCanvas(v.canvas,C[0],C[1],C[2],C[3]);if(i==null){B["class"]=w;i=v.getVml([0,0,C[2],C[3]],B,z,v.canvas,v._jsPlumb);v.attachListeners(i,v);v.appendDisplayElement(i,true);v.appendDisplayElement(v.canvas,true);v.initOpacityNodes(i,["fill"])}else{k(i,[0,0,C[2],C[3]]);e(i,B)}q(i,A,v)};this.reattachListeners=function(){if(i){v.reattachListenersForElement(i,v)}}};jsPlumb.Connectors.vml.Bezier=function(){jsPlumb.Connectors.Bezier.apply(this,arguments);d.apply(this,arguments);this.getPath=function(i){return"m"+p(i[4])+","+p(i[5])+" c"+p(i[8])+","+p(i[9])+","+p(i[10])+","+p(i[11])+","+p(i[6])+","+p(i[7])+" e"}};jsPlumb.Connectors.vml.Straight=function(){jsPlumb.Connectors.Straight.apply(this,arguments);d.apply(this,arguments);this.getPath=function(i){return"m"+p(i[4])+","+p(i[5])+" l"+p(i[6])+","+p(i[7])+" e"}};jsPlumb.Connectors.vml.Flowchart=function(){jsPlumb.Connectors.Flowchart.apply(this,arguments);d.apply(this,arguments);this.getPath=function(v){var w="m "+p(v[4])+","+p(v[5])+" l";for(var u=0;u<v[8];u++){w=w+" "+p(v[9+(u*2)])+","+p(v[10+(u*2)])}w=w+" "+p(v[6])+","+p(v[7])+" e";return w}};jsPlumb.Endpoints.vml.Dot=function(){jsPlumb.Endpoints.Dot.apply(this,arguments);l.apply(this,arguments);this.getVml=function(w,x,u,v,i){return f("oval",w,x,v,i)}};jsPlumb.Endpoints.vml.Rectangle=function(){jsPlumb.Endpoints.Rectangle.apply(this,arguments);l.apply(this,arguments);this.getVml=function(w,x,u,v,i){return f("rect",w,x,v,i)}};jsPlumb.Endpoints.vml.Image=jsPlumb.Endpoints.Image;jsPlumb.Endpoints.vml.Blank=jsPlumb.Endpoints.Blank;jsPlumb.Overlays.vml.Label=jsPlumb.Overlays.Label;var o=function(x,v){x.apply(this,v);n.apply(this,v);var u=this,w=null;u.canvas=null;u.isAppendedAtTopLevel=true;var i=function(z,y){return"m "+p(z.hxy.x)+","+p(z.hxy.y)+" l "+p(z.tail[0].x)+","+p(z.tail[0].y)+" "+p(z.cxy.x)+","+p(z.cxy.y)+" "+p(z.tail[1].x)+","+p(z.tail[1].y)+" x e"};this.paint=function(B,G,F,H,L,K){var z={};if(H){z.stroked="true";z.strokecolor=jsPlumbUtil.convertStyle(H,true)}if(F){z.strokeweight=F+"px"}if(L){z.filled="true";z.fillcolor=L}var y=Math.min(G.hxy.x,G.tail[0].x,G.tail[1].x,G.cxy.x),J=Math.min(G.hxy.y,G.tail[0].y,G.tail[1].y,G.cxy.y),C=Math.max(G.hxy.x,G.tail[0].x,G.tail[1].x,G.cxy.x),A=Math.max(G.hxy.y,G.tail[0].y,G.tail[1].y,G.cxy.y),I=Math.abs(C-y),E=Math.abs(A-J),D=[y,J,I,E];z.path=i(G,K);z.coordsize=(K[2]*t)+","+(K[3]*t);D[0]=K[0];D[1]=K[1];D[2]=K[2];D[3]=K[3];if(u.canvas==null){u.canvas=f("shape",D,z,B.canvas.parentNode,B._jsPlumb);B.appendDisplayElement(u.canvas,true);u.attachListeners(u.canvas,B);u.attachListeners(u.canvas,u)}else{k(u.canvas,D);e(u.canvas,z)}};this.reattachListeners=function(){if(u.canvas){u.reattachListenersForElement(u.canvas,u)}};this.cleanup=function(){if(u.canvas!=null){jsPlumb.CurrentLibrary.removeElement(u.canvas)}}};jsPlumb.Overlays.vml.Arrow=function(){o.apply(this,[jsPlumb.Overlays.Arrow,arguments])};jsPlumb.Overlays.vml.PlainArrow=function(){o.apply(this,[jsPlumb.Overlays.PlainArrow,arguments])};jsPlumb.Overlays.vml.Diamond=function(){o.apply(this,[jsPlumb.Overlays.Diamond,arguments])}})();(function(){var l={joinstyle:"stroke-linejoin","stroke-linejoin":"stroke-linejoin","stroke-dashoffset":"stroke-dashoffset","stroke-linecap":"stroke-linecap"},w="stroke-dasharray",A="dashstyle",e="linearGradient",b="radialGradient",c="fill",a="stop",z="stroke",q="stroke-width",h="style",m="none",t="jsplumb_gradient_",o="lineWidth",C={svg:"http://www.w3.org/2000/svg",xhtml:"http://www.w3.org/1999/xhtml"},g=function(F,D){for(var E in D){F.setAttribute(E,""+D[E])}},f=function(E,D){var F=document.createElementNS(C.svg,E);D=D||{};D.version="1.1";D.xmlns=C.xhtml;g(F,D);return F},n=function(D){return"position:absolute;left:"+D[0]+"px;top:"+D[1]+"px"},i=function(E){for(var D=0;D<E.childNodes.length;D++){if(E.childNodes[D].tagName==e||E.childNodes[D].tagName==b){E.removeChild(E.childNodes[D])}}},v=function(N,I,F,D,J){var G=t+J._jsPlumb.idstamp();i(N);if(!F.gradient.offset){var L=f(e,{id:G,gradientUnits:"userSpaceOnUse"});N.appendChild(L)}else{var L=f(b,{id:G});N.appendChild(L)}for(var K=0;K<F.gradient.stops.length;K++){var H=K;if(D.length==8){H=D[4]<D[6]?K:F.gradient.stops.length-1-K}else{H=D[4]<D[6]?F.gradient.stops.length-1-K:K}var M=jsPlumbUtil.convertStyle(F.gradient.stops[H][1],true);var O=f(a,{offset:Math.floor(F.gradient.stops[K][0]*100)+"%","stop-color":M});L.appendChild(O)}var E=F.strokeStyle?z:c;I.setAttribute(h,E+":url(#"+G+")")},x=function(K,G,E,D,H){if(E.gradient){v(K,G,E,D,H)}else{i(K);G.setAttribute(h,"")}G.setAttribute(c,E.fillStyle?jsPlumbUtil.convertStyle(E.fillStyle,true):m);G.setAttribute(z,E.strokeStyle?jsPlumbUtil.convertStyle(E.strokeStyle,true):m);if(E.lineWidth){G.setAttribute(q,E.lineWidth)}if(E[A]&&E[o]&&!E[w]){var L=E[A].indexOf(",")==-1?" ":",",I=E[A].split(L),F="";I.forEach(function(M){F+=(Math.floor(M*E.lineWidth)+L)});G.setAttribute(w,F)}else{if(E[w]){G.setAttribute(w,E[w])}}for(var J in l){if(E[J]){G.setAttribute(l[J],E[J])}}},B=function(F){var D=/([0-9].)(p[xt])\s(.*)/;var E=F.match(D);return{size:E[1]+E[2],font:E[3]}},r=function(I,J,E){var K=E.split(" "),H=I.className,G=H.baseVal.split(" ");for(var F=0;F<K.length;F++){if(J){if(G.indexOf(K[F])==-1){G.push(K[F])}}else{var D=G.indexOf(K[F]);if(D!=-1){G.splice(D,1)}}}I.className.baseVal=G.join(" ")},u=function(E,D){r(E,true,D)},k=function(E,D){r(E,false,D)};jsPlumbUtil.svg={addClass:u,removeClass:k,node:f,attr:g,pos:n};var s=function(H){var D=this,G=H.pointerEventsSpec||"all";jsPlumb.jsPlumbUIComponent.apply(this,H.originalArgs);D.canvas=null,D.path=null,D.svg=null;var F=H.cssClass+" "+(H.originalArgs[0].cssClass||""),I={style:"",width:0,height:0,"pointer-events":G,position:"absolute"};if(D.tooltip){I.title=D.tooltip}D.svg=f("svg",I);if(H.useDivWrapper){D.canvas=document.createElement("div");D.canvas.style.position="absolute";jsPlumb.sizeCanvas(D.canvas,0,0,1,1);D.canvas.className=F;if(D.tooltip){D.canvas.setAttribute("title",D.tooltip)}}else{g(D.svg,{"class":F});D.canvas=D.svg}H._jsPlumb.appendElement(D.canvas,H.originalArgs[0]["parent"]);if(H.useDivWrapper){D.canvas.appendChild(D.svg)}var E=[D.canvas];this.getDisplayElements=function(){return E};this.appendDisplayElement=function(J){E.push(J)};this.paint=function(M,L,K){if(L!=null){var J=M[0],N=M[1];if(H.useDivWrapper){jsPlumb.sizeCanvas(D.canvas,M[0],M[1],M[2],M[3]);J=0,N=0}g(D.svg,{style:n([J,N,M[2],M[3]]),width:M[2],height:M[3]});D._paint.apply(this,arguments)}}};var d=jsPlumb.SvgConnector=function(E){var D=this;s.apply(this,[{cssClass:E._jsPlumb.connectorClass,originalArgs:arguments,pointerEventsSpec:"none",tooltip:E.tooltip,_jsPlumb:E._jsPlumb}]);this._paint=function(L,H){var K=D.getPath(L),F={d:K},J=null;F["pointer-events"]="all";if(H.outlineColor){var I=H.outlineWidth||1,G=H.lineWidth+(2*I),J=jsPlumb.CurrentLibrary.extend({},H);J.strokeStyle=jsPlumbUtil.convertStyle(H.outlineColor);J.lineWidth=G;if(D.bgPath==null){D.bgPath=f("path",F);D.svg.appendChild(D.bgPath);D.attachListeners(D.bgPath,D)}else{g(D.bgPath,F)}x(D.svg,D.bgPath,J,L,D)}if(D.path==null){D.path=f("path",F);D.svg.appendChild(D.path);D.attachListeners(D.path,D)}else{g(D.path,F)}x(D.svg,D.path,H,L,D)};this.reattachListeners=function(){if(D.bgPath){D.reattachListenersForElement(D.bgPath,D)}if(D.path){D.reattachListenersForElement(D.path,D)}}};jsPlumb.Connectors.svg.Bezier=function(D){jsPlumb.Connectors.Bezier.apply(this,arguments);d.apply(this,arguments);this.getPath=function(F){var E="M "+F[4]+" "+F[5];E+=(" C "+F[8]+" "+F[9]+" "+F[10]+" "+F[11]+" "+F[6]+" "+F[7]);return E}};jsPlumb.Connectors.svg.Straight=function(D){jsPlumb.Connectors.Straight.apply(this,arguments);d.apply(this,arguments);this.getPath=function(E){return"M "+E[4]+" "+E[5]+" L "+E[6]+" "+E[7]}};jsPlumb.Connectors.svg.Flowchart=function(){var D=this;jsPlumb.Connectors.Flowchart.apply(this,arguments);d.apply(this,arguments);this.getPath=function(F){var G="M "+F[4]+","+F[5];for(var E=0;E<F[8];E++){G=G+" L "+F[9+(E*2)]+" "+F[10+(E*2)]}G=G+" "+F[6]+","+F[7];return G}};var y=window.SvgEndpoint=function(E){var D=this;s.apply(this,[{cssClass:E._jsPlumb.endpointClass,originalArgs:arguments,pointerEventsSpec:"all",useDivWrapper:true,_jsPlumb:E._jsPlumb}]);this._paint=function(H,G){var F=jsPlumb.extend({},G);if(F.outlineColor){F.strokeWidth=F.outlineWidth;F.strokeStyle=jsPlumbUtil.convertStyle(F.outlineColor,true)}if(D.node==null){D.node=D.makeNode(H,F);D.svg.appendChild(D.node);D.attachListeners(D.node,D)}x(D.svg,D.node,F,H,D);n(D.node,H)};this.reattachListeners=function(){if(D.node){D.reattachListenersForElement(D.node,D)}}};jsPlumb.Endpoints.svg.Dot=function(){jsPlumb.Endpoints.Dot.apply(this,arguments);y.apply(this,arguments);this.makeNode=function(E,D){return f("circle",{cx:E[2]/2,cy:E[3]/2,r:E[2]/2})}};jsPlumb.Endpoints.svg.Rectangle=function(){jsPlumb.Endpoints.Rectangle.apply(this,arguments);y.apply(this,arguments);this.makeNode=function(E,D){return f("rect",{width:E[2],height:E[3]})}};jsPlumb.Endpoints.svg.Image=jsPlumb.Endpoints.Image;jsPlumb.Endpoints.svg.Blank=jsPlumb.Endpoints.Blank;jsPlumb.Overlays.svg.Label=jsPlumb.Overlays.Label;var p=function(H,F){H.apply(this,F);jsPlumb.jsPlumbUIComponent.apply(this,F);this.isAppendedAtTopLevel=false;var D=this,G=null;this.paint=function(J,M,I,N,K){if(G==null){G=f("path",{"pointer-events":"all"});J.svg.appendChild(G);D.attachListeners(G,J);D.attachListeners(G,D)}var L=F&&(F.length==1)?(F[0].cssClass||""):"";g(G,{d:E(M),"class":L,stroke:N?N:null,fill:K?K:null})};var E=function(I){return"M"+I.hxy.x+","+I.hxy.y+" L"+I.tail[0].x+","+I.tail[0].y+" L"+I.cxy.x+","+I.cxy.y+" L"+I.tail[1].x+","+I.tail[1].y+" L"+I.hxy.x+","+I.hxy.y};this.reattachListeners=function(){if(G){D.reattachListenersForElement(G,D)}};this.cleanup=function(){if(G!=null){jsPlumb.CurrentLibrary.removeElement(G)}}};jsPlumb.Overlays.svg.Arrow=function(){p.apply(this,[jsPlumb.Overlays.Arrow,arguments])};jsPlumb.Overlays.svg.PlainArrow=function(){p.apply(this,[jsPlumb.Overlays.PlainArrow,arguments])};jsPlumb.Overlays.svg.Diamond=function(){p.apply(this,[jsPlumb.Overlays.Diamond,arguments])};jsPlumb.Overlays.svg.GuideLines=function(){var I=null,D=this,H=null,G,F;jsPlumb.Overlays.GuideLines.apply(this,arguments);this.paint=function(K,M,J,N,L){if(I==null){I=f("path");K.svg.appendChild(I);D.attachListeners(I,K);D.attachListeners(I,D);G=f("path");K.svg.appendChild(G);D.attachListeners(G,K);D.attachListeners(G,D);F=f("path");K.svg.appendChild(F);D.attachListeners(F,K);D.attachListeners(F,D)}g(I,{d:E(M[0],M[1]),stroke:"red",fill:null});g(G,{d:E(M[2][0],M[2][1]),stroke:"blue",fill:null});g(F,{d:E(M[3][0],M[3][1]),stroke:"green",fill:null})};var E=function(K,J){return"M "+K.x+","+K.y+" L"+J.x+","+J.y}}})();(function(){var d=null,i=function(p,o){return jsPlumb.CurrentLibrary.hasClass(a(p),o)},a=function(o){return jsPlumb.CurrentLibrary.getElementObject(o)},m=function(o){return jsPlumb.CurrentLibrary.getOffset(a(o))},n=function(o){return jsPlumb.CurrentLibrary.getPageXY(o)},f=function(o){return jsPlumb.CurrentLibrary.getClientXY(o)};var k=function(){var q=this;q.overlayPlacements=[];jsPlumb.jsPlumbUIComponent.apply(this,arguments);jsPlumbUtil.EventGenerator.apply(this,arguments);this._over=function(z){var B=m(a(q.canvas)),D=n(z),u=D[0]-B.left,C=D[1]-B.top;if(u>0&&C>0&&u<q.canvas.width&&C<q.canvas.height){for(var v=0;v<q.overlayPlacements.length;v++){var w=q.overlayPlacements[v];if(w&&(w[0]<=u&&w[1]>=u&&w[2]<=C&&w[3]>=C)){return true}}var A=q.canvas.getContext("2d").getImageData(parseInt(u),parseInt(C),1,1);return A.data[0]!=0||A.data[1]!=0||A.data[2]!=0||A.data[3]!=0}return false};var p=false,o=false,t=null,s=false,r=function(v,u){return v!=null&&i(v,u)};this.mousemove=function(x){var z=n(x),w=f(x),v=document.elementFromPoint(w[0],w[1]),y=r(v,"_jsPlumb_overlay");var u=d==null&&(r(v,"_jsPlumb_endpoint")||r(v,"_jsPlumb_connector"));if(!p&&u&&q._over(x)){p=true;q.fire("mouseenter",q,x);return true}else{if(p&&(!q._over(x)||!u)&&!y){p=false;q.fire("mouseexit",q,x)}}q.fire("mousemove",q,x)};this.click=function(u){if(p&&q._over(u)&&!s){q.fire("click",q,u)}s=false};this.dblclick=function(u){if(p&&q._over(u)&&!s){q.fire("dblclick",q,u)}s=false};this.mousedown=function(u){if(q._over(u)&&!o){o=true;t=m(a(q.canvas));q.fire("mousedown",q,u)}};this.mouseup=function(u){o=false;q.fire("mouseup",q,u)};this.contextmenu=function(u){if(p&&q._over(u)&&!s){q.fire("contextmenu",q,u)}s=false}};var c=function(p){var o=document.createElement("canvas");p._jsPlumb.appendElement(o,p.parent);o.style.position="absolute";if(p["class"]){o.className=p["class"]}p._jsPlumb.getId(o,p.uuid);if(p.tooltip){o.setAttribute("title",p.tooltip)}return o};var l=function(p){k.apply(this,arguments);var o=[];this.getDisplayElements=function(){return o};this.appendDisplayElement=function(q){o.push(q)}};var h=jsPlumb.CanvasConnector=function(r){l.apply(this,arguments);var o=function(v,t){p.ctx.save();jsPlumb.extend(p.ctx,t);if(t.gradient){var u=p.createGradient(v,p.ctx);for(var s=0;s<t.gradient.stops.length;s++){u.addColorStop(t.gradient.stops[s][0],t.gradient.stops[s][1])}p.ctx.strokeStyle=u}p._paint(v,t);p.ctx.restore()};var p=this,q=p._jsPlumb.connectorClass+" "+(r.cssClass||"");p.canvas=c({"class":q,_jsPlumb:p._jsPlumb,parent:r.parent,tooltip:r.tooltip});p.ctx=p.canvas.getContext("2d");p.appendDisplayElement(p.canvas);p.paint=function(w,t){if(t!=null){jsPlumb.sizeCanvas(p.canvas,w[0],w[1],w[2],w[3]);if(t.outlineColor!=null){var v=t.outlineWidth||1,s=t.lineWidth+(2*v),u={strokeStyle:t.outlineColor,lineWidth:s};o(w,u)}o(w,t)}}};var b=function(r){var p=this;l.apply(this,arguments);var q=p._jsPlumb.endpointClass+" "+(r.cssClass||""),o={"class":q,_jsPlumb:p._jsPlumb,parent:r.parent,tooltip:p.tooltip};p.canvas=c(o);p.ctx=p.canvas.getContext("2d");p.appendDisplayElement(p.canvas);this.paint=function(x,u,s){jsPlumb.sizeCanvas(p.canvas,x[0],x[1],x[2],x[3]);if(u.outlineColor!=null){var w=u.outlineWidth||1,t=u.lineWidth+(2*w);var v={strokeStyle:u.outlineColor,lineWidth:t}}p._paint.apply(this,arguments)}};jsPlumb.Endpoints.canvas.Dot=function(r){jsPlumb.Endpoints.Dot.apply(this,arguments);b.apply(this,arguments);var q=this,p=function(s){try{return parseInt(s)}catch(t){if(s.substring(s.length-1)=="%"){return parseInt(s.substring(0,s-1))}}},o=function(u){var s=q.defaultOffset,t=q.defaultInnerRadius;u.offset&&(s=p(u.offset));u.innerRadius&&(t=p(u.innerRadius));return[s,t]};this._paint=function(A,t,x){if(t!=null){var B=q.canvas.getContext("2d"),u=x.getOrientation(q);jsPlumb.extend(B,t);if(t.gradient){var v=o(t.gradient),y=u[1]==1?v[0]*-1:v[0],s=u[0]==1?v[0]*-1:v[0],z=B.createRadialGradient(A[4],A[4],A[4],A[4]+s,A[4]+y,v[1]);for(var w=0;w<t.gradient.stops.length;w++){z.addColorStop(t.gradient.stops[w][0],t.gradient.stops[w][1])}B.fillStyle=z}B.beginPath();B.arc(A[4],A[4],A[4],0,Math.PI*2,true);B.closePath();if(t.fillStyle||t.gradient){B.fill()}if(t.strokeStyle){B.stroke()}}}};jsPlumb.Endpoints.canvas.Rectangle=function(p){var o=this;jsPlumb.Endpoints.Rectangle.apply(this,arguments);b.apply(this,arguments);this._paint=function(x,r,v){var A=o.canvas.getContext("2d"),t=v.getOrientation(o);jsPlumb.extend(A,r);if(r.gradient){var z=t[1]==1?x[3]:t[1]==0?x[3]/2:0;var y=t[1]==-1?x[3]:t[1]==0?x[3]/2:0;var s=t[0]==1?x[2]:t[0]==0?x[2]/2:0;var q=t[0]==-1?x[2]:t[0]==0?x[2]/2:0;var w=A.createLinearGradient(s,z,q,y);for(var u=0;u<r.gradient.stops.length;u++){w.addColorStop(r.gradient.stops[u][0],r.gradient.stops[u][1])}A.fillStyle=w}A.beginPath();A.rect(0,0,x[2],x[3]);A.closePath();if(r.fillStyle||r.gradient){A.fill()}if(r.strokeStyle){A.stroke()}}};jsPlumb.Endpoints.canvas.Triangle=function(p){var o=this;jsPlumb.Endpoints.Triangle.apply(this,arguments);b.apply(this,arguments);this._paint=function(z,q,v){var s=z[2],C=z[3],B=z[0],A=z[1],D=o.canvas.getContext("2d"),w=0,u=0,t=0,r=v.getOrientation(o);if(r[0]==1){w=s;u=C;t=180}if(r[1]==-1){w=s;t=90}if(r[1]==1){u=C;t=-90}D.fillStyle=q.fillStyle;D.translate(w,u);D.rotate(t*Math.PI/180);D.beginPath();D.moveTo(0,0);D.lineTo(s/2,C/2);D.lineTo(0,C);D.closePath();if(q.fillStyle||q.gradient){D.fill()}if(q.strokeStyle){D.stroke()}}};jsPlumb.Endpoints.canvas.Image=jsPlumb.Endpoints.Image;jsPlumb.Endpoints.canvas.Blank=jsPlumb.Endpoints.Blank;jsPlumb.Connectors.canvas.Bezier=function(){var o=this;jsPlumb.Connectors.Bezier.apply(this,arguments);h.apply(this,arguments);this._paint=function(q,p){o.ctx.beginPath();o.ctx.moveTo(q[4],q[5]);o.ctx.bezierCurveTo(q[8],q[9],q[10],q[11],q[6],q[7]);o.ctx.stroke()};this.createGradient=function(r,p,q){return o.ctx.createLinearGradient(r[6],r[7],r[4],r[5])}};jsPlumb.Connectors.canvas.Straight=function(){var p=this,o=[null,[1,-1],[1,1],[-1,1],[-1,-1]];jsPlumb.Connectors.Straight.apply(this,arguments);h.apply(this,arguments);this._paint=function(r,t){p.ctx.beginPath();if(t.dashstyle&&t.dashstyle.split(" ").length==2){var v=t.dashstyle.split(" ");if(v.length!=2){v=[2,2]}var C=[v[0]*t.lineWidth,v[1]*t.lineWidth],y=(r[6]-r[4])/(r[7]-r[5]),G=jsPlumbUtil.segment([r[4],r[5]],[r[6],r[7]]),x=o[G],u=Math.atan(y),z=Math.sqrt(Math.pow(r[6]-r[4],2)+Math.pow(r[7]-r[5],2)),B=Math.floor(z/(C[0]+C[1])),w=[r[4],r[5]];for(var A=0;A<B;A++){p.ctx.moveTo(w[0],w[1]);var q=w[0]+(Math.abs(Math.sin(u)*C[0])*x[0]),F=w[1]+(Math.abs(Math.cos(u)*C[0])*x[1]),E=w[0]+(Math.abs(Math.sin(u)*(C[0]+C[1]))*x[0]),D=w[1]+(Math.abs(Math.cos(u)*(C[0]+C[1]))*x[1]);p.ctx.lineTo(q,F);w=[E,D]}p.ctx.moveTo(w[0],w[1]);p.ctx.lineTo(r[6],r[7])}else{p.ctx.moveTo(r[4],r[5]);p.ctx.lineTo(r[6],r[7])}p.ctx.stroke()};this.createGradient=function(r,q){return q.createLinearGradient(r[4],r[5],r[6],r[7])}};jsPlumb.Connectors.canvas.Flowchart=function(){var o=this;jsPlumb.Connectors.Flowchart.apply(this,arguments);h.apply(this,arguments);this._paint=function(r,q){o.ctx.beginPath();o.ctx.moveTo(r[4],r[5]);for(var p=0;p<r[8];p++){o.ctx.lineTo(r[9+(p*2)],r[10+(p*2)])}o.ctx.lineTo(r[6],r[7]);o.ctx.stroke()};this.createGradient=function(q,p){return p.createLinearGradient(q[4],q[5],q[6],q[7])}};jsPlumb.Overlays.canvas.Label=jsPlumb.Overlays.Label;var g=function(){jsPlumb.jsPlumbUIComponent.apply(this,arguments)};var e=function(p,o){p.apply(this,o);g.apply(this,o);this.paint=function(s,u,q,v,t){var r=s.ctx;r.lineWidth=q;r.beginPath();r.moveTo(u.hxy.x,u.hxy.y);r.lineTo(u.tail[0].x,u.tail[0].y);r.lineTo(u.cxy.x,u.cxy.y);r.lineTo(u.tail[1].x,u.tail[1].y);r.lineTo(u.hxy.x,u.hxy.y);r.closePath();if(v){r.strokeStyle=v;r.stroke()}if(t){r.fillStyle=t;r.fill()}}};jsPlumb.Overlays.canvas.Arrow=function(){e.apply(this,[jsPlumb.Overlays.Arrow,arguments])};jsPlumb.Overlays.canvas.PlainArrow=function(){e.apply(this,[jsPlumb.Overlays.PlainArrow,arguments])};jsPlumb.Overlays.canvas.Diamond=function(){e.apply(this,[jsPlumb.Overlays.Diamond,arguments])}})();(function(a){jsPlumb.CurrentLibrary={addClass:function(c,b){c=jsPlumb.CurrentLibrary.getElementObject(c);try{if(c[0].className.constructor==SVGAnimatedString){jsPlumb.util.svg.addClass(c[0],b)}}catch(d){}c.addClass(b)},animate:function(d,c,b){d.animate(c,b)},appendElement:function(c,b){jsPlumb.CurrentLibrary.getElementObject(b).append(c)},ajax:function(b){b=b||{};b.type=b.type||"get";a.ajax(b)},bind:function(b,c,d){b=jsPlumb.CurrentLibrary.getElementObject(b);b.bind(c,d)},dragEvents:{start:"start",stop:"stop",drag:"drag",step:"step",over:"over",out:"out",drop:"drop",complete:"complete"},extend:function(c,b){return a.extend(c,b)},getAttribute:function(b,c){return b.attr(c)},getClientXY:function(b){return[b.clientX,b.clientY]},getDocumentElement:function(){return document},getDragObject:function(b){return b[1].draggable},getDragScope:function(b){return b.draggable("option","scope")},getDropEvent:function(b){return b[0]},getDropScope:function(b){return b.droppable("option","scope")},getDOMElement:function(b){if(typeof(b)=="string"){return document.getElementById(b)}else{if(b.context){return b[0]}else{return b}}},getElementObject:function(b){return typeof(b)=="string"?a("#"+b):a(b)},getOffset:function(b){return b.offset()},getOriginalEvent:function(b){return b.originalEvent},getPageXY:function(b){return[b.pageX,b.pageY]},getParent:function(b){return jsPlumb.CurrentLibrary.getElementObject(b).parent()},getScrollLeft:function(b){return b.scrollLeft()},getScrollTop:function(b){return b.scrollTop()},getSelector:function(b){return a(b)},getSize:function(b){return[b.outerWidth(),b.outerHeight()]},getTagName:function(b){var c=jsPlumb.CurrentLibrary.getElementObject(b);return c.length>0?c[0].tagName:null},getUIPosition:function(c){if(c.length==1){ret={left:c[0].pageX,top:c[0].pageY}}else{var d=c[1],b=d.offset;ret=b||d.absolutePosition}return ret},hasClass:function(c,b){return c.hasClass(b)},initDraggable:function(c,b,d){b=b||{};b.helper=null;if(d){b.scope=b.scope||jsPlumb.Defaults.Scope}c.draggable(b)},initDroppable:function(c,b){b.scope=b.scope||jsPlumb.Defaults.Scope;c.droppable(b)},isAlreadyDraggable:function(b){b=jsPlumb.CurrentLibrary.getElementObject(b);return b.hasClass("ui-draggable")},isDragSupported:function(c,b){return c.draggable},isDropSupported:function(c,b){return c.droppable},removeClass:function(c,b){c=jsPlumb.CurrentLibrary.getElementObject(c);try{if(c[0].className.constructor==SVGAnimatedString){jsPlumb.util.svg.removeClass(c[0],b)}}catch(d){}c.removeClass(b)},removeElement:function(b,c){jsPlumb.CurrentLibrary.getElementObject(b).remove()},setAttribute:function(c,d,b){c.attr(d,b)},setDraggable:function(c,b){c.draggable("option","disabled",!b)},setDragScope:function(c,b){c.draggable("option","scope",b)},setOffset:function(b,c){jsPlumb.CurrentLibrary.getElementObject(b).offset(c)},trigger:function(d,e,b){var c=jQuery._data(jsPlumb.CurrentLibrary.getElementObject(d)[0],"handle");c(b)},unbind:function(b,c,d){b=jsPlumb.CurrentLibrary.getElementObject(b);b.unbind(c,d)}};a(document).ready(jsPlumb.init)})(jQuery);(function(){"undefined"==typeof Math.sgn&&(Math.sgn=function(l){return 0==l?0:0<l?1:-1});var d={subtract:function(m,l){return{x:m.x-l.x,y:m.y-l.y}},dotProduct:function(m,l){return m.x*l.x+m.y*l.y},square:function(l){return Math.sqrt(l.x*l.x+l.y*l.y)},scale:function(m,l){return{x:m.x*l,y:m.y*l}}},f=Math.pow(2,-65),h=function(y,x){for(var t=[],v=x.length-1,r=2*v-1,s=[],w=[],p=[],q=[],o=[[1,0.6,0.3,0.1],[0.4,0.6,0.6,0.4],[0.1,0.3,0.6,1]],u=0;u<=v;u++){s[u]=d.subtract(x[u],y)}for(u=0;u<=v-1;u++){w[u]=d.subtract(x[u+1],x[u]);w[u]=d.scale(w[u],3)}for(u=0;u<=v-1;u++){for(var m=0;m<=v;m++){p[u]||(p[u]=[]);p[u][m]=d.dotProduct(w[u],s[m])}}for(u=0;u<=r;u++){q[u]||(q[u]=[]);q[u].y=0;q[u].x=parseFloat(u)/r}r=v-1;for(s=0;s<=v+r;s++){u=Math.max(0,s-r);for(w=Math.min(s,v);u<=w;u++){j=s-u;q[u+j].y=q[u+j].y+p[j][u]*o[j][u]}}v=x.length-1;q=a(q,2*v-1,t,0);r=d.subtract(y,x[0]);p=d.square(r);for(u=o=0;u<q;u++){r=d.subtract(y,k(x,v,t[u],null,null));r=d.square(r);if(r<p){p=r;o=t[u]}}r=d.subtract(y,x[v]);r=d.square(r);if(r<p){p=r;o=1}return{location:o,distance:p}},a=function(C,B,x,z){var v=[],w=[],A=[],t=[],u=0,s,y;y=Math.sgn(C[0].y);for(var q=1;q<=B;q++){s=Math.sgn(C[q].y);s!=y&&u++;y=s}switch(u){case 0:return 0;case 1:if(z>=64){x[0]=(C[0].x+C[B].x)/2;return 1}var p,u=C[0].y-C[B].y;y=C[B].x-C[0].x;q=C[0].x*C[B].y-C[B].x*C[0].y;s=max_distance_below=0;for(p=1;p<B;p++){var r=u*C[p].x+y*C[p].y+q;r>s?s=r:r<max_distance_below&&(max_distance_below=r)}p=y;s=(1*(q-s)-p*0)*(1/(0*p-u*1));p=y;y=q-max_distance_below;u=(1*y-p*0)*(1/(0*p-u*1));y=Math.min(s,u);if(Math.max(s,u)-y<f){A=C[B].x-C[0].x;t=C[B].y-C[0].y;x[0]=0+1*(A*(C[0].y-0)-t*(C[0].x-0))*(1/(A*0-t*1));return 1}}k(C,B,0.5,v,w);C=a(v,B,A,z+1);B=a(w,B,t,z+1);for(z=0;z<C;z++){x[z]=A[z]}for(z=0;z<B;z++){x[z+C]=t[z]}return C+B},k=function(m,l,p,q,n){for(var o=[[]],r=0;r<=l;r++){o[0][r]=m[r]}for(m=1;m<=l;m++){for(r=0;r<=l-m;r++){o[m]||(o[m]=[]);o[m][r]||(o[m][r]={});o[m][r].x=(1-p)*o[m-1][r].x+p*o[m-1][r+1].x;o[m][r].y=(1-p)*o[m-1][r].y+p*o[m-1][r+1].y}}if(q!=null){for(r=0;r<=l;r++){q[r]=o[r][0]}}if(n!=null){for(r=0;r<=l;r++){n[r]=o[l-r][r]}}return o[l][0]},g={},e=function(t){var s=g[t];if(!s){var s=[],p=function(u){return function(){return u}},q=function(){return function(u){return u}},n=function(){return function(u){return 1-u}},o=function(u){return function(v){for(var x=1,w=0;w<u.length;w++){x=x*u[w](v)}return x}};s.push(new function(){return function(u){return Math.pow(u,t)}});for(var r=1;r<t;r++){for(var l=[new p(t)],m=0;m<t-r;m++){l.push(new q)}for(m=0;m<r;m++){l.push(new n)}s.push(new o(l))}s.push(new function(){return function(u){return Math.pow(1-u,t)}});g[t]=s}return s},c=function(m,l){for(var p=e(m.length-1),q=0,n=0,o=0;o<m.length;o++){q=q+m[o].x*p[o](l);n=n+m[o].y*p[o](l)}return{x:q,y:n}},b=function(m,l,p){for(var q=c(m,l),n=0,o=p>0?1:-1,r=null;n<Math.abs(p);){l=l+0.005*o;r=c(m,l);n=n+Math.sqrt(Math.pow(r.x-q.x,2)+Math.pow(r.y-q.y,2));q=r}return{point:r,location:l}},i=function(m,l){var o=c(m,l),p=c(m.slice(0,m.length-1),l),n=p.y-o.y,o=p.x-o.x;return n==0?Infinity:Math.atan(n/o)};window.jsBezier={distanceFromCurve:h,gradientAtPoint:i,gradientAtPointAlongCurveFrom:function(m,l,n){l=b(m,l,n);if(l.location>1){l.location=1}if(l.location<0){l.location=0}return i(m,l.location)},nearestPointOnCurve:function(m,l){var n=h(m,l);return{point:k(l,l.length-1,n.location,null,null),location:n.location}},pointOnCurve:c,pointAlongCurveFrom:function(m,l,n){return b(m,l,n).point},perpendicularToCurveAt:function(m,l,n,o){l=b(m,l,o==null?0:o);m=i(m,l.location);o=Math.atan(-1/m);m=n/2*Math.sin(o);n=n/2*Math.cos(o);return[{x:l.point.x+n,y:l.point.y+m},{x:l.point.x-n,y:l.point.y-m}]},locationAlongCurveFrom:function(m,l,n){return b(m,l,n).location}}})();
\ No newline at end of file
diff --git a/v3/js/jquery.qtip.min.js b/v3/js/jquery.qtip.min.js
new file mode 100644
index 000000000..3971f6df5
--- /dev/null
+++ b/v3/js/jquery.qtip.min.js
@@ -0,0 +1,2 @@
+/*! qTip2 v2.0.0 | http://craigsworks.com/projects/qtip2/ | Licensed MIT, GPL */
+(function(a,b,c){(function(a){"use strict",typeof define=="function"&&define.amd?define(["jquery"],a):jQuery&&!jQuery.fn.qtip&&a(jQuery)})(function(d){function I(a){var b=function(a){return a===g||"object"!=typeof a},c=function(a){return!d.isFunction(a)&&(!a&&!a.attr||a.length<1||"object"==typeof a&&!a.jquery)};if(!a||"object"!=typeof a)return f;b(a.metadata)&&(a.metadata={type:a.metadata});if("content"in a){if(b(a.content)||a.content.jquery)a.content={text:a.content};c(a.content.text||f)&&(a.content.text=f),"title"in a.content&&(b(a.content.title)&&(a.content.title={text:a.content.title}),c(a.content.title.text||f)&&(a.content.title.text=f))}return"position"in a&&b(a.position)&&(a.position={my:a.position,at:a.position}),"show"in a&&b(a.show)&&(a.show=a.show.jquery?{target:a.show}:{event:a.show}),"hide"in a&&b(a.hide)&&(a.hide=a.hide.jquery?{target:a.hide}:{event:a.hide}),"style"in a&&b(a.style)&&(a.style={classes:a.style}),d.each(u,function(){this.sanitize&&this.sanitize(a)}),a}function J(h,i,q,r){function Q(a){var b=0,c,d=i,e=a.split(".");while(d=d[e[b++]])b<e.length&&(c=d);return[c||i,e.pop()]}function R(a,b,c){var e=d.Event("tooltip"+a);return e.originalEvent=(c?d.extend({},c):g)||P.event||g,M.trigger(e,[s].concat(b||[])),!e.isDefaultPrevented()}function S(){var a=i.style.widget;M.toggleClass("ui-helper-reset "+y,a).toggleClass(B,i.style.def&&!a),O.content&&O.content.toggleClass(y+"-content",a),O.titlebar&&O.titlebar.toggleClass(y+"-header",a),O.button&&O.button.toggleClass(x+"-icon",!a)}function T(a){O.title&&(O.titlebar.remove(),O.titlebar=O.title=O.button=g,a!==f&&s.reposition())}function U(){var a=i.content.title.button,b=typeof a=="string",c=b?a:"Close tooltip";O.button&&O.button.remove(),a.jquery?O.button=a:O.button=d("<a />",{"class":"ui-state-default ui-tooltip-close "+(i.style.widget?"":x+"-icon"),title:c,"aria-label":c}).prepend(d("<span />",{"class":"ui-icon ui-icon-close",html:"&times;"})),O.button.appendTo(O.titlebar).attr("role","button").click(function(a){return M.hasClass(z)||s.hide(a),f}),s.redraw()}function V(){var a=J+"-title";O.titlebar&&T(),O.titlebar=d("<div />",{"class":x+"-titlebar "+(i.style.widget?"ui-widget-header":"")}).append(O.title=d("<div />",{id:a,"class":x+"-title","aria-atomic":e})).insertBefore(O.content).delegate(".ui-tooltip-close","mousedown keydown mouseup keyup mouseout",function(a){d(this).toggleClass("ui-state-active ui-state-focus",a.type.substr(-4)==="down")}).delegate(".ui-tooltip-close","mouseover mouseout",function(a){d(this).toggleClass("ui-state-hover",a.type==="mouseover")}),i.content.title.button?U():s.rendered&&s.redraw()}function W(a){var b=O.button,c=O.title;if(!s.rendered)return f;a?(c||V(),U()):b.remove()}function X(a,b){var c=O.title;if(!s.rendered||!a)return f;d.isFunction(a)&&(a=a.call(h,P.event,s));if(a===f||!a&&a!=="")return T(f);a.jquery&&a.length>0?c.empty().append(a.css({display:"block"})):c.html(a),s.redraw(),b!==f&&s.rendered&&M[0].offsetWidth>0&&s.reposition(P.event)}function Y(a,b){function g(a){function i(c){c&&(delete h[c.src],clearTimeout(s.timers.img[c.src]),d(c).unbind(N)),d.isEmptyObject(h)&&(s.redraw(),b!==f&&s.reposition(P.event),a())}var g,h={};if((g=e.find("img[src]:not([height]):not([width])")).length===0)return i();g.each(function(a,b){if(h[b.src]!==c)return;var e=0,f=3;(function g(){if(b.height||b.width||e>f)return i(b);e+=1,s.timers.img[b.src]=setTimeout(g,700)})(),d(b).bind("error"+N+" load"+N,function(){i(this)}),h[b.src]=b})}var e=O.content;return!s.rendered||!a?f:(d.isFunction(a)&&(a=a.call(h,P.event,s)||""),a.jquery&&a.length>0?e.empty().append(a.css({display:"block"})):e.html(a),s.rendered<0?M.queue("fx",g):(L=0,g(d.noop)),s)}function Z(){function l(a){if(M.hasClass(z))return f;clearTimeout(s.timers.show),clearTimeout(s.timers.hide);var b=function(){s.toggle(e,a)};i.show.delay>0?s.timers.show=setTimeout(b,i.show.delay):b()}function m(a){if(M.hasClass(z)||K||L)return f;var b=d(a.relatedTarget||a.target),e=b.closest(A)[0]===M[0],h=b[0]===g.show[0];clearTimeout(s.timers.show),clearTimeout(s.timers.hide);if(c.target==="mouse"&&e||i.hide.fixed&&/mouse(out|leave|move)/.test(a.type)&&(e||h)){try{a.preventDefault(),a.stopImmediatePropagation()}catch(j){}return}i.hide.delay>0?s.timers.hide=setTimeout(function(){s.hide(a)},i.hide.delay):s.hide(a)}function n(a){if(M.hasClass(z))return f;clearTimeout(s.timers.inactive),s.timers.inactive=setTimeout(function(){s.hide(a)},i.hide.inactive)}function o(a){s.rendered&&M[0].offsetWidth>0&&s.reposition(a)}var c=i.position,g={show:i.show.target,hide:i.hide.target,viewport:d(c.viewport),document:d(b),body:d(b.body),window:d(a)},j={show:d.trim(""+i.show.event).split(" "),hide:d.trim(""+i.hide.event).split(" ")},k=d.browser.msie&&parseInt(d.browser.version,10)===6;M.bind("mouseenter"+N+" mouseleave"+N,function(a){var b=a.type==="mouseenter";b&&s.focus(a),M.toggleClass(D,b)}),/mouse(out|leave)/i.test(i.hide.event)&&i.hide.leave==="window"&&g.window.bind("mouseout"+N+" blur"+N,function(a){!/select|option/.test(a.target.nodeName)&&!a.relatedTarget&&s.hide(a)}),i.hide.fixed?(g.hide=g.hide.add(M),M.bind("mouseover"+N,function(){M.hasClass(z)||clearTimeout(s.timers.hide)})):/mouse(over|enter)/i.test(i.show.event)&&g.hide.bind("mouseleave"+N,function(a){clearTimeout(s.timers.show)}),(""+i.hide.event).indexOf("unfocus")>-1&&c.container.closest("html").bind("mousedown"+N,function(a){var b=d(a.target),c=s.rendered&&!M.hasClass(z)&&M[0].offsetWidth>0,e=b.parents(A).filter(M[0]).length>0;b[0]!==h[0]&&b[0]!==M[0]&&!e&&!h.has(b[0]).length&&!b.attr("disabled")&&s.hide(a)}),"number"==typeof i.hide.inactive&&(g.show.bind("qtip-"+q+"-inactive",n),d.each(t.inactiveEvents,function(a,b){g.hide.add(O.tooltip).bind(b+N+"-inactive",n)})),d.each(j.hide,function(a,b){var c=d.inArray(b,j.show),e=d(g.hide);c>-1&&e.add(g.show).length===e.length||b==="unfocus"?(g.show.bind(b+N,function(a){M[0].offsetWidth>0?m(a):l(a)}),delete j.show[c]):g.hide.bind(b+N,m)}),d.each(j.show,function(a,b){g.show.bind(b+N,l)}),"number"==typeof i.hide.distance&&g.show.add(M).bind("mousemove"+N,function(a){var b=P.origin||{},c=i.hide.distance,d=Math.abs;(d(a.pageX-b.pageX)>=c||d(a.pageY-b.pageY)>=c)&&s.hide(a)}),c.target==="mouse"&&(g.show.bind("mousemove"+N,function(a){v={pageX:a.pageX,pageY:a.pageY,type:"mousemove"}}),c.adjust.mouse&&(i.hide.event&&(M.bind("mouseleave"+N,function(a){(a.relatedTarget||a.target)!==g.show[0]&&s.hide(a)}),O.target.bind("mouseenter"+N+" mouseleave"+N,function(a){P.onTarget=a.type==="mouseenter"})),g.document.bind("mousemove"+N,function(a){s.rendered&&P.onTarget&&!M.hasClass(z)&&M[0].offsetWidth>0&&s.reposition(a||v)}))),(c.adjust.resize||g.viewport.length)&&(d.event.special.resize?g.viewport:g.window).bind("resize"+N,o),(g.viewport.length||k&&M.css("position")==="fixed")&&g.viewport.bind("scroll"+N,o)}function _(){var c=[i.show.target[0],i.hide.target[0],s.rendered&&O.tooltip[0],i.position.container[0],i.position.viewport[0],i.position.container.closest("html")[0],a,b];s.rendered?d([]).pushStack(d.grep(c,function(a){return typeof a=="object"})).unbind(N):i.show.target.unbind(N+"-create")}var s=this,E=b.body,J=x+"-"+q,K=0,L=0,M=d(),N=".qtip-"+q,O,P;s.id=q,s.rendered=f,s.destroyed=f,s.elements=O={target:h},s.timers={img:{}},s.options=i,s.checks={},s.plugins={},s.cache=P={event:{},target:d(),disabled:f,attr:r,onTarget:f,lastClass:""},s.checks.builtin={"^id$":function(a,b,c){var g=c===e?t.nextid:c,h=x+"-"+g;g!==f&&g.length>0&&!d("#"+h).length&&(M[0].id=h,O.content[0].id=h+"-content",O.title[0].id=h+"-title")},"^content.text$":function(a,b,c){Y(c)},"^content.title.text$":function(a,b,c){if(!c)return T();!O.title&&c&&V(),X(c)},"^content.title.button$":function(a,b,c){W(c)},"^position.(my|at)$":function(a,b,c){"string"==typeof c&&(a[b]=new u.Corner(c))},"^position.container$":function(a,b,c){s.rendered&&M.appendTo(c)},"^show.ready$":function(){s.rendered?s.toggle(e):s.render(1)},"^style.classes$":function(a,b,c){M.attr("class",x+" qtip "+c)},"^style.widget|content.title":S,"^events.(render|show|move|hide|focus|blur)$":function(a,b,c){M[(d.isFunction(c)?"":"un")+"bind"]("tooltip"+b,c)},"^(show|hide|position).(event|target|fixed|inactive|leave|distance|viewport|adjust)":function(){var a=i.position;M.attr("tracking",a.target==="mouse"&&a.adjust.mouse),_(),Z()}},d.extend(s,{render:function(a){if(s.rendered)return s;var b=i.content.text,c=i.content.title.text,g=i.position;return d.attr(h[0],"aria-describedby",J),M=O.tooltip=d("<div/>",{id:J,"class":x+" qtip "+B+" "+i.style.classes+" "+x+"-pos-"+i.position.my.abbrev(),width:i.style.width||"",height:i.style.height||"",tracking:g.target==="mouse"&&g.adjust.mouse,role:"alert","aria-live":"polite","aria-atomic":f,"aria-describedby":J+"-content","aria-hidden":e}).toggleClass(z,P.disabled).data("qtip",s).appendTo(i.position.container).append(O.content=d("<div />",{"class":x+"-content",id:J+"-content","aria-atomic":e})),s.rendered=-1,L=1,K=1,c&&(V(),d.isFunction(c)||X(c,f)),d.isFunction(b)||Y(b,f),s.rendered=e,S(),d.each(i.events,function(a,b){d.isFunction(b)&&M.bind(a==="toggle"?"tooltipshow tooltiphide":"tooltip"+a,b)}),d.each(u,function(){this.initialize==="render"&&this(s)}),Z(),M.queue("fx",function(b){R("render"),L=0,K=0,s.redraw(),(i.show.ready||a)&&s.toggle(e,P.event,f),b()}),s},get:function(a){var b,c;switch(a.toLowerCase()){case"dimensions":b={height:M.outerHeight(),width:M.outerWidth()};break;case"offset":b=u.offset(M,i.position.container);break;default:c=Q(a.toLowerCase()),b=c[0][c[1]],b=b.precedance?b.string():b}return b},set:function(a,b){function n(a,b){var c,d,e;for(c in l)for(d in l[c])if(e=(new RegExp(d,"i")).exec(a))b.push(e),l[c][d].apply(s,b)}var c=/^position\.(my|at|adjust|target|container)|style|content|show\.ready/i,h=/^content\.(title|attr)|style/i,j=f,k=f,l=s.checks,m;return"string"==typeof a?(m=a,a={},a[m]=b):a=d.extend(e,{},a),d.each(a,function(b,e){var f=Q(b.toLowerCase()),g;g=f[0][f[1]],f[0][f[1]]="object"==typeof e&&e.nodeType?d(e):e,a[b]=[f[0],f[1],e,g],j=c.test(b)||j,k=h.test(b)||k}),I(i),K=L=1,d.each(a,n),K=L=0,s.rendered&&M[0].offsetWidth>0&&(j&&s.reposition(i.position.target==="mouse"?g:P.event),k&&s.redraw()),s},toggle:function(a,c){function t(){a?(d.browser.msie&&M[0].style.removeAttribute("filter"),M.css("overflow",""),"string"==typeof h.autofocus&&d(h.autofocus,M).focus(),h.target.trigger("qtip-"+q+"-inactive")):M.css({display:"",visibility:"",opacity:"",left:"",top:""}),R(a?"visible":"hidden")}if(!s.rendered)return a?s.render(1):s;var g=a?"show":"hide",h=i[g],j=i[a?"hide":"show"],k=i.position,l=i.content,m=M[0].offsetWidth>0,n=a||h.target.length===1,o=!c||h.target.length<2||P.target[0]===c.target,p,r;(typeof a).search("boolean|number")&&(a=!m);if(!M.is(":animated")&&m===a&&o)return s;if(c){if(/over|enter/.test(c.type)&&/out|leave/.test(P.event.type)&&i.show.target.add(c.target).length===i.show.target.length&&M.has(c.relatedTarget).length)return s;P.event=d.extend({},c)}return R(g,[90])?(d.attr(M[0],"aria-hidden",!a),a?(P.origin=d.extend({},v),s.focus(c),d.isFunction(l.text)&&Y(l.text,f),d.isFunction(l.title.text)&&X(l.title.text,f),!G&&k.target==="mouse"&&k.adjust.mouse&&(d(b).bind("mousemove.qtip",function(a){v={pageX:a.pageX,pageY:a.pageY,type:"mousemove"}}),G=e),s.reposition(c,arguments[2]),!h.solo||d(A,h.solo).not(M).qtip("hide",d.Event("tooltipsolo"))):(clearTimeout(s.timers.show),delete P.origin,G&&!d(A+'[tracking="true"]:visible',h.solo).not(M).length&&(d(b).unbind("mousemove.qtip"),G=f),s.blur(c)),h.effect===f||n===f?(M[g](),t.call(M)):d.isFunction(h.effect)?(M.stop(1,1),h.effect.call(M,s),M.queue("fx",function(a){t(),a()})):M.fadeTo(90,a?1:0,t),a&&h.target.trigger("qtip-"+q+"-inactive"),s):s},show:function(a){return s.toggle(e,a)},hide:function(a){return s.toggle(f,a)},focus:function(a){if(!s.rendered)return s;var b=d(A),c=parseInt(M[0].style.zIndex,10),e=t.zindex+b.length,f=d.extend({},a),g;return M.hasClass(C)||R("focus",[e],f)&&(c!==e&&(b.each(function(){this.style.zIndex>c&&(this.style.zIndex=this.style.zIndex-1)}),b.filter("."+C).qtip("blur",f)),M.addClass(C)[0].style.zIndex=e),s},blur:function(a){return M.removeClass(C),R("blur",[M.css("zIndex")],a),s},reposition:function(c,e){if(!s.rendered||K)return s;K=1;var g=i.position.target,h=i.position,j=h.my,k=h.at,q=h.adjust,r=q.method.split(" "),t=M.outerWidth(),w=M.outerHeight(),x=0,y=0,z=M.css("position")==="fixed",A=h.viewport,B={left:0,top:0},C=h.container,D=M[0].offsetWidth>0,E,F,G;if(d.isArray(g)&&g.length===2)k={x:m,y:l},B={left:g[0],top:g[1]};else if(g==="mouse"&&(c&&c.pageX||P.event.pageX))k={x:m,y:l},c=(c&&(c.type==="resize"||c.type==="scroll")?P.event:c&&c.pageX&&c.type==="mousemove"?c:v&&v.pageX&&(q.mouse||!c||!c.pageX)?{pageX:v.pageX,pageY:v.pageY}:!q.mouse&&P.origin&&P.origin.pageX&&i.show.distance?P.origin:c)||c||P.event||v||{},B={top:c.pageY,left:c.pageX};else{g==="event"&&c&&c.target&&c.type!=="scroll"&&c.type!=="resize"?P.target=d(c.target):g!=="event"&&(P.target=d(g.jquery?g:O.target)),g=P.target,g=d(g).eq(0);if(g.length===0)return s;g[0]===b||g[0]===a?(x=u.iOS?a.innerWidth:g.width(),y=u.iOS?a.innerHeight:g.height(),g[0]===a&&(B={top:(A||g).scrollTop(),left:(A||g).scrollLeft()})):u.imagemap&&g.is("area")?E=u.imagemap(s,g,k,u.viewport?r:f):u.svg&&typeof g[0].xmlbase=="string"?E=u.svg(s,g,k,u.viewport?r:f):(x=g.outerWidth(),y=g.outerHeight(),B=u.offset(g,C)),E&&(x=E.width,y=E.height,F=E.offset,B=E.position);if(u.iOS>3.1&&u.iOS<4.1||u.iOS>=4.3&&u.iOS<4.33||!u.iOS&&z)G=d(a),B.left-=G.scrollLeft(),B.top-=G.scrollTop();B.left+=k.x===o?x:k.x===p?x/2:0,B.top+=k.y===n?y:k.y===p?y/2:0}return B.left+=q.x+(j.x===o?-t:j.x===p?-t/2:0),B.top+=q.y+(j.y===n?-w:j.y===p?-w/2:0),u.viewport?(B.adjusted=u.viewport(s,B,h,x,y,t,w),F&&B.adjusted.left&&(B.left+=F.left),F&&B.adjusted.top&&(B.top+=F.top)):B.adjusted={left:0,top:0},R("move",[B,A.elem||A],c)?(delete B.adjusted,e===f||!D||isNaN(B.left)||isNaN(B.top)||g==="mouse"||!d.isFunction(h.effect)?M.css(B):d.isFunction(h.effect)&&(h.effect.call(M,s,d.extend({},B)),M.queue(function(a){d(this).css({opacity:"",height:""}),d.browser.msie&&this.style.removeAttribute("filter"),a()})),K=0,s):s},redraw:function(){if(s.rendered<1||L)return s;var a=i.style,b=i.position.container,c,d,e,f;return L=1,R("redraw"),a.height&&M.css(k,a.height),a.width?M.css(j,a.width):(M.css(j,"").appendTo(H),d=M.width(),d%2<1&&(d+=1),e=M.css("max-width")||"",f=M.css("min-width")||"",c=(e+f).indexOf("%")>-1?b.width()/100:0,e=(e.indexOf("%")>-1?c:1)*parseInt(e,10)||d,f=(f.indexOf("%")>-1?c:1)*parseInt(f,10)||0,d=e+f?Math.min(Math.max(d,f),e):d,M.css(j,Math.round(d)).appendTo(b)),R("redrawn"),L=0,s},disable:function(a){return"boolean"!=typeof a&&(a=!M.hasClass(z)&&!P.disabled),s.rendered?(M.toggleClass(z,a),d.attr(M[0],"aria-disabled",a)):P.disabled=!!a,s},enable:function(){return s.disable(f)},destroy:function(){var a=h[0],b=d.attr(a,F),c=h.data("qtip");s.destroyed=e,s.rendered&&(M.stop(1,0).remove(),d.each(s.plugins,function(){this.destroy&&this.destroy()})),clearTimeout(s.timers.show),clearTimeout(s.timers.hide),_();if(!c||s===c)d.removeData(a,"qtip"),i.suppress&&b&&(d.attr(a,"title",b),h.removeAttr(F)),h.removeAttr("aria-describedby");return h.unbind(".qtip-"+q),delete w[s.id],h}})}function K(a,c){var h,i,j,k,l,m=d(this),n=d(b.body),o=this===b?n:m,p=m.metadata?m.metadata(c.metadata):g,q=c.metadata.type==="html5"&&p?p[c.metadata.name]:g,r=m.data(c.metadata.name||"qtipopts");try{r=typeof r=="string"?d.parseJSON(r):r}catch(s){}k=d.extend(e,{},t.defaults,c,typeof r=="object"?I(r):g,I(q||p)),i=k.position,k.id=a;if("boolean"==typeof k.content.text){j=m.attr(k.content.attr);if(k.content.attr!==f&&j)k.content.text=j;else return f}i.container.length||(i.container=n),i.target===f&&(i.target=o),k.show.target===f&&(k.show.target=o),k.show.solo===e&&(k.show.solo=i.container.closest("body")),k.hide.target===f&&(k.hide.target=o),k.position.viewport===e&&(k.position.viewport=i.container),i.container=i.container.eq(0),i.at=new u.Corner(i.at),i.my=new u.Corner(i.my);if(d.data(this,"qtip"))if(k.overwrite)m.qtip("destroy");else if(k.overwrite===f)return f;return k.suppress&&(l=d.attr(this,"title"))&&d(this).removeAttr("title").attr(F,l).attr("title",""),h=new J(m,k,a,!!j),d.data(this,"qtip",h),m.bind("remove.qtip-"+a+" removeqtip.qtip-"+a,function(){h.destroy()}),h}function L(a){var b=this,c=a.elements.tooltip,g=a.options.content.ajax,h=t.defaults.content.ajax,i=".qtip-ajax",j=/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,k=e,l=f,m;a.checks.ajax={"^content.ajax":function(a,d,e){d==="ajax"&&(g=e),d==="once"?b.init():g&&g.url?b.load():c.unbind(i)}},d.extend(b,{init:function(){return g&&g.url&&c.unbind(i)[g.once?"one":"bind"]("tooltipshow"+i,b.load),b},load:function(c){function r(){var b;if(a.destroyed)return;k=f,p&&(l=e,a.show(c.originalEvent)),(b=h.complete||g.complete)&&d.isFunction(b)&&b.apply(g.context||a,arguments)}function s(b,c,e){var f;if(a.destroyed)return;o&&"string"==typeof b&&(b=d("<div/>").append(b.replace(j,"")).find(o)),(f=h.success||g.success)&&d.isFunction(f)?f.call(g.context||a,b,c,e):a.set("content.text",b)}function t(b,c,d){if(a.destroyed||b.status===0)return;a.set("content.text",c+": "+d)}if(l){l=f;return}var i=g.url.lastIndexOf(" "),n=g.url,o,p=!g.loading&&k;if(p)try{c.preventDefault()}catch(q){}else if(c&&c.isDefaultPrevented())return b;m&&m.abort&&m.abort(),i>-1&&(o=n.substr(i),n=n.substr(0,i)),m=d.ajax(d.extend({error:h.error||t,context:a},g,{url:n,success:s,complete:r}))},destroy:function(){m&&m.abort&&m.abort(),a.destroyed=e}}),b.init()}function M(a,b,c){var d=Math.ceil(b/2),e=Math.ceil(c/2),f={bottomright:[[0,0],[b,c],[b,0]],bottomleft:[[0,0],[b,0],[0,c]],topright:[[0,c],[b,0],[b,c]],topleft:[[0,0],[0,c],[b,c]],topcenter:[[0,c],[d,0],[b,c]],bottomcenter:[[0,0],[b,0],[d,c]],rightcenter:[[0,0],[b,e],[0,c]],leftcenter:[[b,0],[b,c],[0,e]]};return f.lefttop=f.bottomright,f.righttop=f.bottomleft,f.leftbottom=f.topright,f.rightbottom=f.topleft,f[a.string()]}function N(a,b){function D(a){var b=v.is(":visible");v.show(),a(),v.toggle(b)}function E(){x.width=r.height,x.height=r.width}function F(){x.width=r.width,x.height=r.height}function G(b,d,g,j){if(!t.tip)return;var k=q.corner.clone(),u=g.adjusted,v=a.options.position.adjust.method.split(" "),x=v[0],y=v[1]||v[0],z={left:f,top:f,x:0,y:0},A,B={},C;q.corner.fixed!==e&&(x===s&&k.precedance===h&&u.left&&k.y!==p?k.precedance=k.precedance===h?i:h:x!==s&&u.left&&(k.x=k.x===p?u.left>0?m:o:k.x===m?o:m),y===s&&k.precedance===i&&u.top&&k.x!==p?k.precedance=k.precedance===i?h:i:y!==s&&u.top&&(k.y=k.y===p?u.top>0?l:n:k.y===l?n:l),k.string()!==w.corner.string()&&(w.top!==u.top||w.left!==u.left)&&q.update(k,f)),A=q.position(k,u),A[k.x]+=I(k,k.x),A[k.y]+=I(k,k.y),A.right!==c&&(A.left=-A.right),A.bottom!==c&&(A.top=-A.bottom),A.user=Math.max(0,r.offset);if(z.left=x===s&&!!u.left)k.x===p?B["margin-left"]=z.x=A["margin-left"]-u.left:(C=A.right!==c?[u.left,-A.left]:[-u.left,A.left],(z.x=Math.max(C[0],C[1]))>C[0]&&(g.left-=u.left,z.left=f),B[A.right!==c?o:m]=z.x);if(z.top=y===s&&!!u.top)k.y===p?B["margin-top"]=z.y=A["margin-top"]-u.top:(C=A.bottom!==c?[u.top,-A.top]:[-u.top,A.top],(z.y=Math.max(C[0],C[1]))>C[0]&&(g.top-=u.top,z.top=f),B[A.bottom!==c?n:l]=z.y);t.tip.css(B).toggle(!(z.x&&z.y||k.x===p&&z.y||k.y===p&&z.x)),g.left-=A.left.charAt?A.user:x!==s||z.top||!z.left&&!z.top?A.left:0,g.top-=A.top.charAt?A.user:y!==s||z.left||!z.left&&!z.top?A.top:0,w.left=u.left,w.top=u.top,w.corner=k.clone()}function H(){var b=r.corner,c=a.options.position,d=c.at,g=c.my.string?c.my.string():c.my;return b===f||g===f&&d===f?f:(b===e?q.corner=new u.Corner(g):b.string||(q.corner=new u.Corner(b),q.corner.fixed=e),w.corner=new u.Corner(q.corner.string()),q.corner.string()!=="centercenter")}function I(a,b,c){b=b?b:a[a.precedance];var d=t.titlebar&&a.y===l,e=d?t.titlebar:v,f="border-"+b+"-width",g=function(a){return parseInt(a.css(f),10)},h;return D(function(){h=(c?g(c):g(t.content)||g(e)||g(v))||0}),h}function J(a){var b=t.titlebar&&a.y===l,c=b?t.titlebar:t.content,e=d.browser.mozilla,f=e?"-moz-":d.browser.webkit?"-webkit-":"",g="border-radius-"+a.y+a.x,h="border-"+a.y+"-"+a.x+"-radius",i=function(a){return parseInt(c.css(a),10)||parseInt(v.css(a),10)},j;return D(function(){j=i(h)||i(f+h)||i(f+g)||i(g)||0}),j}function K(a){function z(a,b,c){var d=a.css(b)||n;return c&&d===a.css(c)?f:j.test(d)?f:d}var b,c,g,h=t.tip.css("cssText",""),i=a||q.corner,j=/rgba?\(0, 0, 0(, 0)?\)|transparent|#123456/i,k="border-"+i[i.precedance]+"-color",m="background-color",n="transparent",o=" !important",s=t.titlebar,u=s&&(i.y===l||i.y===p&&h.position().top+x.height/2+r.offset<s.outerHeight(e)),w=u?s:t.content;D(function(){y.fill=z(h,m)||z(w,m)||z(t.content,m)||z(v,m)||h.css(m),y.border=z(h,k,"color")||z(w,k,"color")||z(t.content,k,"color")||z(v,k,"color")||v.css(k),d("*",h).add(h).css("cssText",m+":"+n+o+";border:0"+o+";")})}function L(a){var b=a.precedance===i,c=x[b?j:k],d=x[b?k:j],e=a.string().indexOf(p)>-1,f=c*(e?.5:1),g=Math.pow,h=Math.round,l,m,n,o=Math.sqrt(g(f,2)+g(d,2)),q=[z/f*o,z/d*o];return q[2]=Math.sqrt(g(q[0],2)-g(z,2)),q[3]=Math.sqrt(g(q[1],2)-g(z,2)),l=o+q[2]+q[3]+(e?0:q[0]),m=l/o,n=[h(m*d),h(m*c)],{height:n[b?0:1],width:n[b?1:0]}}function N(a,b,c){return"<qvml:"+a+' xmlns="urn:schemas-microsoft.com:vml" class="qtip-vml" '+(b||"")+' style="behavior: url(#default#VML); '+(c||"")+'" />'}var q=this,r=a.options.style.tip,t=a.elements,v=t.tooltip,w={top:0,left:0},x={width:r.width,height:r.height},y={},z=r.border||0,A=".qtip-tip",B=!!(d("<canvas />")[0]||{}).getContext,C;q.corner=g,q.mimic=g,q.border=z,q.offset=r.offset,q.size=x,a.checks.tip={"^position.my|style.tip.(corner|mimic|border)$":function(){q.init()||q.destroy(),a.reposition()},"^style.tip.(height|width)$":function(){x={width:r.width,height:r.height},q.create(),q.update(),a.reposition()},"^content.title.text|style.(classes|widget)$":function(){t.tip&&t.tip.length&&q.update()}},d.extend(q,{init:function(){var a=H()&&(B||d.browser.msie);return a&&(q.create(),q.update(),v.unbind(A).bind("tooltipmove"+A,G),B||v.bind("tooltipredraw tooltipredrawn",function(a){a.type==="tooltipredraw"?(C=t.tip.html(),t.tip.html("")):t.tip.html(C)})),a},create:function(){var a=x.width,b=x.height,c;t.tip&&t.tip.remove(),t.tip=d("<div />",{"class":"ui-tooltip-tip"}).css({width:a,height:b}).prependTo(v),B?d("<canvas />").appendTo(t.tip)[0].getContext("2d").save():(c=N("shape",'coordorigin="0,0"',"position:absolute;"),t.tip.html(c+c),d("*",t.tip).bind("click mousedown",function(a){a.stopPropagation()}))},update:function(a,b){var c=t.tip,j=c.children(),k=x.width,s=x.height,A=r.mimic,C=Math.round,D,G,H,J,O;a||(a=w.corner||q.corner),A===f?A=a:(A=new u.Corner(A),A.precedance=a.precedance,A.x==="inherit"?A.x=a.x:A.y==="inherit"?A.y=a.y:A.x===A.y&&(A[a.precedance]=a[a.precedance])),D=A.precedance,a.precedance===h?E():F(),t.tip.css({width:k=x.width,height:s=x.height}),K(a),y.border!=="transparent"?(z=I(a,g),r.border===0&&z>0&&(y.fill=y.border),q.border=z=r.border!==e?r.border:z):q.border=z=0,H=M(A,k,s),q.size=O=L(a),c.css(O),a.precedance===i?J=[C(A.x===m?z:A.x===o?O.width-k-z:(O.width-k)/2),C(A.y===l?O.height-s:0)]:J=[C(A.x===m?O.width-k:0),C(A.y===l?z:A.y===n?O.height-s-z:(O.height-s)/2)],B?(j.attr(O),G=j[0].getContext("2d"),G.restore(),G.save(),G.clearRect(0,0,3e3,3e3),G.fillStyle=y.fill,G.strokeStyle=y.border,G.lineWidth=z*2,G.lineJoin="miter",G.miterLimit=100,G.translate(J[0],J[1]),G.beginPath(),G.moveTo(H[0][0],H[0][1]),G.lineTo(H[1][0],H[1][1]),G.lineTo(H[2][0],H[2][1]),G.closePath(),z&&(v.css("background-clip")==="border-box"&&(G.strokeStyle=y.fill,G.stroke()),G.strokeStyle=y.border,G.stroke()),G.fill()):(H="m"+H[0][0]+","+H[0][1]+" l"+H[1][0]+","+H[1][1]+" "+H[2][0]+","+H[2][1]+" xe",J[2]=z&&/^(r|b)/i.test(a.string())?parseFloat(d.browser.version,10)===8?2:1:0,j.css({coordsize:k+z+" "+(s+z),antialias:""+(A.string().indexOf(p)>-1),left:J[0],top:J[1],width:k+z,height:s+z}).each(function(a){var b=d(this);b[b.prop?"prop":"attr"]({coordsize:k+z+" "+(s+z),path:H,fillcolor:y.fill,filled:!!a,stroked:!a}).toggle(!!z||!!a),!a&&b.html()===""&&b.html(N("stroke",'weight="'+z*2+'px" color="'+y.border+'" miterlimit="1000" joinstyle="miter"'))})),b!==f&&q.position(a)},position:function(a){var b=t.tip,c={},e=Math.max(0,r.offset),g,n,o;return r.corner===f||!b?f:(a=a||q.corner,g=a.precedance,n=L(a),o=[a.x,a.y],g===h&&o.reverse(),d.each(o,function(b,d){var f,h,o;d===p?(f=g===i?m:l,c[f]="50%",c["margin-"+f]=-Math.round(n[g===i?j:k]/2)+e):(f=I(a,d),h=I(a,d,t.content),o=J(a),c[d]=b?h:e+(o>f?o:-f))}),c[a[g]]-=n[g===h?j:k],b.css({top:"",bottom:"",left:"",right:"",margin:""}).css(c),c)},destroy:function(){t.tip&&t.tip.remove(),t.tip=!1,v.unbind(A)}}),q.init()}function O(c){function s(){q=d(p,j).not("[disabled]").map(function(){return typeof this.focus=="function"?this:null})}function t(a){q.length<1&&a.length?a.not("body").blur():q.first().focus()}function v(a){var b=d(a.target),c=b.closest(".qtip"),e;e=c.length<1?f:parseInt(c[0].style.zIndex,10)>parseInt(j[0].style.zIndex,10),!e&&d(a.target).closest(A)[0]!==j[0]&&t(b)}var g=this,h=c.options.show.modal,i=c.elements,j=i.tooltip,k="#qtip-overlay",l=".qtipmodal",m=l+c.id,n="is-modal-qtip",o=d(b.body),p=u.modal.focusable.join(","),q={},r;c.checks.modal={"^show.modal.(on|blur)$":function(){g.init(),i.overlay.toggle(j.is(":visible"))},"^content.text$":function(){s()}},d.extend(g,{init:function(){return h.on?(r=g.create(),j.attr(n,e).css("z-index",u.modal.zindex+d(A+"["+n+"]").length).unbind(l).unbind(m).bind("tooltipshow"+l+" tooltiphide"+l,function(a,b,c){var e=a.originalEvent;if(a.target===j[0])if(e&&a.type==="tooltiphide"&&/mouse(leave|enter)/.test(e.type)&&d(e.relatedTarget).closest(r[0]).length)try{a.preventDefault()}catch(f){}else(!e||e&&!e.solo)&&g[a.type.replace("tooltip","")](a,c)}).bind("tooltipfocus"+l,function(a){if(a.isDefaultPrevented()||a.target!==j[0])return;var b=d(A).filter("["+n+"]"),c=u.modal.zindex+b.length,e=parseInt(j[0].style.zIndex,10);r[0].style.zIndex=c-2,b.each(function(){this.style.zIndex>e&&(this.style.zIndex-=1)}),b.end().filter("."+C).qtip("blur",a.originalEvent),j.addClass(C)[0].style.zIndex=c;try{a.preventDefault()}catch(f){}}).bind("tooltiphide"+l,function(a){a.target===j[0]&&d("["+n+"]").filter(":visible").not(j).last().qtip("focus",a)}),h.escape&&d(b).unbind(m).bind("keydown"+m,function(a){a.keyCode===27&&j.hasClass(C)&&c.hide(a)}),h.blur&&i.overlay.unbind(m).bind("click"+m,function(a){j.hasClass(C)&&c.hide(a)}),s(),g):g},create:function(){function c(){r.css({height:d(a).height(),width:d(a).width()})}var b=d(k);return b.length?i.overlay=b.insertAfter(d(A).last()):(r=i.overlay=d("<div />",{id:k.substr(1),html:"<div></div>",mousedown:function(){return f}}).hide().insertAfter(d(A).last()),d(a).unbind(l).bind("resize"+l,c),c(),r)},toggle:function(a,b,c){if(a&&a.isDefaultPrevented())return g;var i=h.effect,k=b?"show":"hide",l=r.is(":visible"),p=d("["+n+"]").filter(":visible").not(j),q;return r||(r=g.create()),r.is(":animated")&&l===b||!b&&p.length?g:(b?(r.css({left:0,top:0}),r.toggleClass("blurs",h.blur),h.stealfocus!==f&&(o.bind("focusin"+m,v),t(d("body :focus")))):o.unbind("focusin"+m),r.stop(e,f),d.isFunction(i)?i.call(r,b):i===f?r[k]():r.fadeTo(parseInt(c,10)||90,b?1:0,function(){b||d(this).hide()}),b||r.queue(function(a){r.css({left:"",top:""}),a()}),g)},show:function(a,b){return g.toggle(a,e,b)},hide:function(a,b){return g.toggle(a,f,b)},destroy:function(){var a=r;return a&&(a=d("["+n+"]").not(j).length<1,a?(i.overlay.remove(),d(b).unbind(l)):i.overlay.unbind(l+c.id),o.undelegate("*","focusin"+m)),j.removeAttr(n).unbind(l)}}),g.init()}function P(a){var b=this,c=a.elements,e=c.tooltip,f=".bgiframe-"+a.id;d.extend(b,{init:function(){c.bgiframe=d('<iframe class="ui-tooltip-bgiframe" frameborder="0" tabindex="-1" src="javascript:\'\';"  style="display:block; position:absolute; z-index:-1; filter:alpha(opacity=0); -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";"></iframe>'),c.bgiframe.appendTo(e),e.bind("tooltipmove"+f,b.adjust)},adjust:function(){var b=a.get("dimensions"),d=a.plugins.tip,f=c.tip,g,h;h=parseInt(e.css("border-left-width"),10)||0,h={left:-h,top:-h},d&&f&&(g=d.corner.precedance==="x"?["width","left"]:["height","top"],h[g[1]]-=f[g[0]]()),c.bgiframe.css(h).css(b)},destroy:function(){c.bgiframe.remove(),e.unbind(f)}}),b.init()}var e=!0,f=!1,g=null,h="x",i="y",j="width",k="height",l="top",m="left",n="bottom",o="right",p="center",q="flip",r="flipinvert",s="shift",t,u,v,w={},x="ui-tooltip",y="ui-widget",z="ui-state-disabled",A="div.qtip."+x,B=x+"-default",C=x+"-focus",D=x+"-hover",E="_replacedByqTip",F="oldtitle",G,H;H=d("<div/>",{id:"qtip-rcontainer"}),d(function(){H.appendTo(b.body)}),t=d.fn.qtip=function(a,b,h){var i=(""+a).toLowerCase(),j=g,k=d.makeArray(arguments).slice(1),l=k[k.length-1],m=this[0]?d.data(this[0],"qtip"):g;if(!arguments.length&&m||i==="api")return m;if("string"==typeof a)return this.each(function(){var a=d.data(this,"qtip");if(!a)return e;l&&l.timeStamp&&(a.cache.event=l);if(i!=="option"&&i!=="options"||!b)a[i]&&a[i].apply(a[i],k);else if(d.isPlainObject(b)||h!==c)a.set(b,h);else return j=a.get(b),f}),j!==g?j:this;if("object"==typeof a||!arguments.length)return m=I(d.extend(e,{},a)),t.bind.call(this,m,l)},t.bind=function(a,b){return this.each(function(g){function n(a){function b(){l.render(typeof a=="object"||h.show.ready),i.show.add(i.hide).unbind(k)}if(l.cache.disabled)return f;l.cache.event=d.extend({},a),l.cache.target=a?d(a.target):[c],h.show.delay>0?(clearTimeout(l.timers.show),l.timers.show=setTimeout(b,h.show.delay),j.show!==j.hide&&i.hide.bind(j.hide,function(){clearTimeout(l.timers.show)})):b()}var h,i,j,k,l,m;m=d.isArray(a.id)?a.id[g]:a.id,m=!m||m===f||m.length<1||w[m]?t.nextid++:w[m]=m,k=".qtip-"+m+"-create",l=K.call(this,m,a);if(l===f)return e;h=l.options,d.each(u,function(){this.initialize==="initialize"&&this(l)}),i={show:h.show.target,hide:h.hide.target},j={show:d.trim(""+h.show.event).replace(/ /g,k+" ")+k,hide:d.trim(""+h.hide.event).replace(/ /g,k+" ")+k},/mouse(over|enter)/i.test(j.show)&&!/mouse(out|leave)/i.test(j.hide)&&(j.hide+=" mouseleave"+k),i.show.bind("mousemove"+k,function(a){v={pageX:a.pageX,pageY:a.pageY,type:"mousemove"},l.cache.onTarget=e}),i.show.bind(j.show,n),(h.show.ready||h.prerender)&&n(b)})},u=t.plugins={Corner:function(a){a=(""+a).replace(/([A-Z])/," $1").replace(/middle/gi,p).toLowerCase(),this.x=(a.match(/left|right/i)||a.match(/center/)||["inherit"])[0].toLowerCase(),this.y=(a.match(/top|bottom|center/i)||["inherit"])[0].toLowerCase();var b=a.charAt(0);this.precedance=b==="t"||b==="b"?i:h,this.string=function(){return this.precedance===i?this.y+this.x:this.x+this.y},this.abbrev=function(){var a=this.x.substr(0,1),b=this.y.substr(0,1);return a===b?a:this.precedance===i?b+a:a+b},this.invertx=function(a){this.x=this.x===m?o:this.x===o?m:a||this.x},this.inverty=function(a){this.y=this.y===l?n:this.y===n?l:a||this.y},this.clone=function(){return{x:this.x,y:this.y,precedance:this.precedance,string:this.string,abbrev:this.abbrev,clone:this.clone,invertx:this.invertx,inverty:this.inverty}}},offset:function(a,b){function j(a,b){c.left+=b*a.scrollLeft(),c.top+=b*a.scrollTop()}var c=a.offset(),e=a.closest("body")[0],f=b,g,h,i;if(f){do f.css("position")!=="static"&&(h=f.position(),c.left-=h.left+(parseInt(f.css("borderLeftWidth"),10)||0)+(parseInt(f.css("marginLeft"),10)||0),c.top-=h.top+(parseInt(f.css("borderTopWidth"),10)||0)+(parseInt(f.css("marginTop"),10)||0),!g&&(i=f.css("overflow"))!=="hidden"&&i!=="visible"&&(g=f));while((f=d(f[0].offsetParent)).length);g&&g[0]!==e&&j(g,1)}return c},iOS:parseFloat((""+(/CPU.*OS ([0-9_]{1,5})|(CPU like).*AppleWebKit.*Mobile/i.exec(navigator.userAgent)||[0,""])[1]).replace("undefined","3_2").replace("_",".").replace("_",""))||f,fn:{attr:function(a,b){if(this.length){var c=this[0],e="title",f=d.data(c,"qtip");if(a===e&&f&&"object"==typeof f&&f.options.suppress)return arguments.length<2?d.attr(c,F):(f&&f.options.content.attr===e&&f.cache.attr&&f.set("content.text",b),this.attr(F,b))}return d.fn["attr"+E].apply(this,arguments)},clone:function(a){var b=d([]),c="title",e=d.fn["clone"+E].apply(this,arguments);return a||e.filter("["+F+"]").attr("title",function(){return d.attr(this,F)}).removeAttr(F),e}}},d.each(u.fn,function(a,b){if(!b||d.fn[a+E])return e;var c=d.fn[a+E]=d.fn[a];d.fn[a]=function(){return b.apply(this,arguments)||c.apply(this,arguments)}}),d.ui||(d["cleanData"+E]=d.cleanData,d.cleanData=function(a){for(var b=0,e;(e=a[b])!==c;b++)try{d(e).triggerHandler("removeqtip")}catch(f){}d["cleanData"+E](a)}),t.version="@VERSION",t.nextid=0,t.inactiveEvents="click dblclick mousedown mouseup mousemove mouseleave mouseenter".split(" "),t.zindex=15e3,t.defaults={prerender:f,id:f,overwrite:e,suppress:e,content:{text:e,attr:"title",title:{text:f,button:f}},position:{my:"top left",at:"bottom right",target:f,container:f,viewport:f,adjust:{x:0,y:0,mouse:e,resize:e,method:"flip flip"},effect:function(a,b,c){d(this).animate(b,{duration:200,queue:f})}},show:{target:f,event:"mouseenter",effect:e,delay:90,solo:f,ready:f,autofocus:f},hide:{target:f,event:"mouseleave",effect:e,delay:0,fixed:f,inactive:f,leave:"window",distance:f},style:{classes:"",widget:f,width:f,height:f,def:e},events:{render:g,move:g,show:g,hide:g,toggle:g,visible:g,hidden:g,focus:g,blur:g}},u.svg=function(a,c,e,f){var g=d(b),h=c[0],i={width:0,height:0,position:{top:1e10,left:1e10}},j,k,l,m,n;while(!h.getBBox)h=h.parentNode;if(h.getBBox&&h.parentNode){j=h.getBBox(),k=h.getScreenCTM(),l=h.farthestViewportElement||h;if(!l.createSVGPoint)return i;m=l.createSVGPoint(),m.x=j.x,m.y=j.y,n=m.matrixTransform(k),i.position.left=n.x,i.position.top=n.y,m.x+=j.width,m.y+=j.height,n=m.matrixTransform(k),i.width=n.x-i.position.left,i.height=n.y-i.position.top,i.position.left+=g.scrollLeft(),i.position.top+=g.scrollTop()}return i},u.ajax=function(a){var b=a.plugins.ajax;return"object"==typeof b?b:a.plugins.ajax=new L(a)},u.ajax.initialize="render",u.ajax.sanitize=function(a){var b=a.content,c;b&&"ajax"in b&&(c=b.ajax,typeof c!="object"&&(c=a.content.ajax={url:c}),"boolean"!=typeof c.once&&c.once&&(c.once=!!c.once))},d.extend(e,t.defaults,{content:{ajax:{loading:e,once:e}}}),u.tip=function(a){var b=a.plugins.tip;return"object"==typeof b?b:a.plugins.tip=new N(a)},u.tip.initialize="render",u.tip.sanitize=function(a){var b=a.style,c;b&&"tip"in b&&(c=a.style.tip,typeof c!="object"&&(a.style.tip={corner:c}),/string|boolean/i.test(typeof c.corner)||(c.corner=e),typeof c.width!="number"&&delete c.width,typeof c.height!="number"&&delete c.height,typeof c.border!="number"&&c.border!==e&&delete c.border,typeof c.offset!="number"&&delete c.offset)},d.extend(e,t.defaults,{style:{tip:{corner:e,mimic:f,width:6,height:6,border:e,offset:0}}}),u.modal=function(a){var b=a.plugins.modal;return"object"==typeof b?b:a.plugins.modal=new O(a)},u.modal.initialize="render",u.modal.sanitize=function(a){a.show&&(typeof a.show.modal!="object"?a.show.modal={on:!!a.show.modal}:typeof a.show.modal.on=="undefined"&&(a.show.modal.on=e))},u.modal.zindex=t.zindex-200,u.modal.focusable=["a[href]","area[href]","input","select","textarea","button","iframe","object","embed","[tabindex]","[contenteditable]"],d.extend(e,t.defaults,{show:{modal:{on:f,effect:e,blur:e,stealfocus:e,escape:e}}}),u.viewport=function(c,d,e,f,g,q,t){function L(a,b,c,e,f,g,h,i,j){var k=d[f],l=w[a],m=y[a],n=c===s,o=-E.offset[f]+D.offset[f]+D["scroll"+f],q=l===f?j:l===g?-j:-j/2,t=m===f?i:m===g?-i:-i/2,u=G&&G.size?G.size[h]||0:0,v=G&&G.corner&&G.corner.precedance===a&&!n?u:0,x=o-k+v,z=k+j-D[h]-o+v,A=q-(w.precedance===a||l===w[b]?t:0)-(m===p?i/2:0);return n?(v=G&&G.corner&&G.corner.precedance===b?u:0,A=(l===f?1:-1)*q-v,d[f]+=x>0?x:z>0?-z:0,d[f]=Math.max(-E.offset[f]+D.offset[f]+(v&&G.corner[a]===p?G.offset:0),k-A,Math.min(Math.max(-E.offset[f]+D.offset[f]+D[h],k+A),d[f]))):(e*=c===r?2:0,x>0&&(l!==f||z>0)?(d[f]-=A+e,J["invert"+a](f)):z>0&&(l!==g||x>0)&&(d[f]-=(l===p?-A:A)+e,J["invert"+a](g)),d[f]<o&&-d[f]>z&&(d[f]=k,J=w.clone())),d[f]-k}var u=e.target,v=c.elements.tooltip,w=e.my,y=e.at,z=e.adjust,A=z.method.split(" "),B=A[0],C=A[1]||A[0],D=e.viewport,E=e.container,F=c.cache,G=c.plugins.tip,H={left:0,top:0},I,J,K;if(!D.jquery||u[0]===a||u[0]===b.body||z.method==="none")return H;I=v.css("position")==="fixed",D={elem:D,height:D[(D[0]===a?"h":"outerH")+"eight"](),width:D[(D[0]===a?"w":"outerW")+"idth"](),scrollleft:I?0:D.scrollLeft(),scrolltop:I?0:D.scrollTop(),offset:D.offset()||{left:0,top:0}},E={elem:E,scrollLeft:E.scrollLeft(),scrollTop:E.scrollTop(),offset:E.offset()||{left:0,top:0}};if(B!=="shift"||C!=="shift")J=w.clone();return H={left:B!=="none"?L(h,i,B,z.x,m,o,j,f,q):0,top:C!=="none"?L(i,h,C,z.y,l,n,k,g,t):0},J&&F.lastClass!==(K=x+"-pos-"+J.abbrev())&&v.removeClass(c.cache.lastClass).addClass(c.cache.lastClass=K),H},u.imagemap=function(a,b,c,e){function v(a,b,c){var d=0,e=1,f=1,g=0,h=0,i=a.width,j=a.height;while(i>0&&j>0&&e>0&&f>0){i=Math.floor(i/2),j=Math.floor(j/2),c.x===m?e=i:c.x===o?e=a.width-i:e+=Math.floor(i/2),c.y===l?f=j:c.y===n?f=a.height-j:f+=Math.floor(j/2),d=b.length;while(d--){if(b.length<2)break;g=b[d][0]-a.position.left,h=b[d][1]-a.position.top,(c.x===m&&g>=e||c.x===o&&g<=e||c.x===p&&(g<e||g>a.width-e)||c.y===l&&h>=f||c.y===n&&h<=f||c.y===p&&(h<f||h>a.height-f))&&b.splice(d,1)}}return{left:b[0][0],top:b[0][1]}}b.jquery||(b=d(b));var f=a.cache.areas={},g=(b[0].shape||b.attr("shape")).toLowerCase(),h=b[0].coords||b.attr("coords"),i=h.split(","),j=[],k=d('img[usemap="#'+b.parent("map").attr("name")+'"]'),q=k.offset(),r={width:0,height:0,position:{top:1e10,right:0,bottom:0,left:1e10}},s=0,t=0,u;q.left+=Math.ceil((k.outerWidth()-k.width())/2),q.top+=Math.ceil((k.outerHeight()-k.height())/2);if(g==="poly"){s=i.length;while(s--)t=[parseInt(i[--s],10),parseInt(i[s+1],10)],t[0]>r.position.right&&(r.position.right=t[0]),t[0]<r.position.left&&(r.position.left=t[0]),t[1]>r.position.bottom&&(r.position.bottom=t[1]),t[1]<r.position.top&&(r.position.top=t[1]),j.push(t)}else{s=-1;while(s++<i.length)j.push(parseInt(i[s],10))}switch(g){case"rect":r={width:Math.abs(j[2]-j[0]),height:Math.abs(j[3]-j[1]),position:{left:Math.min(j[0],j[2]),top:Math.min(j[1],j[3])}};break;case"circle":r={width:j[2]+2,height:j[2]+2,position:{left:j[0],top:j[1]}};break;case"poly":r.width=Math.abs(r.position.right-r.position.left),r.height=Math.abs(r.position.bottom-r.position.top),c.abbrev()==="c"?r.position={left:r.position.left+r.width/2,top:r.position.top+r.height/2}:(f[c+h]||(r.position=v(r,j.slice(),c),e&&(e[0]==="flip"||e[1]==="flip")&&(r.offset=v(r,j.slice(),{x:c.x===m?o:c.x===o?m:p,y:c.y===l?n:c.y===n?l:p}),r.offset.left-=r.position.left,r.offset.top-=r.position.top),f[c+h]=r),r=f[c+h]),r.width=r.height=0}return r.position.left+=q.left,r.position.top+=q.top,r},u.bgiframe=function(a){var b=d.browser,c=a.plugins.bgiframe;return d("select, object").length<1||!b.msie||(""+b.version).charAt(0)!=="6"?f:"object"==typeof c?c:a.plugins.bgiframe=new P(a)},u.bgiframe.initialize="render"})})(window,document);
\ No newline at end of file
diff --git a/v3/js/jquery.simplemodal.js b/v3/js/jquery.simplemodal.js
new file mode 100644
index 000000000..3ac257530
--- /dev/null
+++ b/v3/js/jquery.simplemodal.js
@@ -0,0 +1,26 @@
+/*
+ * SimpleModal 1.4.3 - jQuery Plugin
+ * http://simplemodal.com/
+ * Copyright (c) 2012 Eric Martin
+ * Licensed under MIT and GPL
+ * Date: Sat, Sep 8 2012 07:52:31 -0700
+ */
+(function(b){"function"===typeof define&&define.amd?define(["jquery"],b):b(jQuery)})(function(b){var j=[],l=b(document),m=b.browser.msie&&6===parseInt(b.browser.version)&&"object"!==typeof window.XMLHttpRequest,o=b.browser.msie&&7===parseInt(b.browser.version),n=null,k=b(window),h=[];b.modal=function(a,d){return b.modal.impl.init(a,d)};b.modal.close=function(){b.modal.impl.close()};b.modal.focus=function(a){b.modal.impl.focus(a)};b.modal.setContainerDimensions=function(){b.modal.impl.setContainerDimensions()};
+b.modal.setPosition=function(){b.modal.impl.setPosition()};b.modal.update=function(a,d){b.modal.impl.update(a,d)};b.fn.modal=function(a){return b.modal.impl.init(this,a)};b.modal.defaults={appendTo:"body",focus:!0,opacity:50,overlayId:"simplemodal-overlay",overlayCss:{},containerId:"simplemodal-container",containerCss:{},dataId:"simplemodal-data",dataCss:{},minHeight:null,minWidth:null,maxHeight:null,maxWidth:null,autoResize:!1,autoPosition:!0,zIndex:1E3,close:!0,closeHTML:'<a class="modalCloseImg" title="Close"></a>',
+closeClass:"simplemodal-close",escClose:!0,overlayClose:!1,fixed:!0,position:null,persist:!1,modal:!0,onOpen:null,onShow:null,onClose:null};b.modal.impl={d:{},init:function(a,d){if(this.d.data)return!1;n=b.browser.msie&&!b.support.boxModel;this.o=b.extend({},b.modal.defaults,d);this.zIndex=this.o.zIndex;this.occb=!1;if("object"===typeof a){if(a=a instanceof b?a:b(a),this.d.placeholder=!1,0<a.parent().parent().size()&&(a.before(b("<span></span>").attr("id","simplemodal-placeholder").css({display:"none"})),
+this.d.placeholder=!0,this.display=a.css("display"),!this.o.persist))this.d.orig=a.clone(!0)}else if("string"===typeof a||"number"===typeof a)a=b("<div></div>").html(a);else return alert("SimpleModal Error: Unsupported data type: "+typeof a),this;this.create(a);this.open();b.isFunction(this.o.onShow)&&this.o.onShow.apply(this,[this.d]);return this},create:function(a){this.getDimensions();if(this.o.modal&&m)this.d.iframe=b('<iframe src="javascript:false;"></iframe>').css(b.extend(this.o.iframeCss,
+{display:"none",opacity:0,position:"fixed",height:h[0],width:h[1],zIndex:this.o.zIndex,top:0,left:0})).appendTo(this.o.appendTo);this.d.overlay=b("<div></div>").attr("id",this.o.overlayId).addClass("simplemodal-overlay").css(b.extend(this.o.overlayCss,{display:"none",opacity:this.o.opacity/100,height:this.o.modal?j[0]:0,width:this.o.modal?j[1]:0,position:"fixed",left:0,top:0,zIndex:this.o.zIndex+1})).appendTo(this.o.appendTo);this.d.container=b("<div></div>").attr("id",this.o.containerId).addClass("simplemodal-container").css(b.extend({position:this.o.fixed?
+"fixed":"absolute"},this.o.containerCss,{display:"none",zIndex:this.o.zIndex+2})).append(this.o.close&&this.o.closeHTML?b(this.o.closeHTML).addClass(this.o.closeClass):"").appendTo(this.o.appendTo);this.d.wrap=b("<div></div>").attr("tabIndex",-1).addClass("simplemodal-wrap").css({height:"100%",outline:0,width:"100%"}).appendTo(this.d.container);this.d.data=a.attr("id",a.attr("id")||this.o.dataId).addClass("simplemodal-data").css(b.extend(this.o.dataCss,{display:"none"})).appendTo("body");this.setContainerDimensions();
+this.d.data.appendTo(this.d.wrap);(m||n)&&this.fixIE()},bindEvents:function(){var a=this;b("."+a.o.closeClass).bind("click.simplemodal",function(b){b.preventDefault();a.close()});a.o.modal&&a.o.close&&a.o.overlayClose&&a.d.overlay.bind("click.simplemodal",function(b){b.preventDefault();a.close()});l.bind("keydown.simplemodal",function(b){a.o.modal&&9===b.keyCode?a.watchTab(b):a.o.close&&a.o.escClose&&27===b.keyCode&&(b.preventDefault(),a.close())});k.bind("resize.simplemodal orientationchange.simplemodal",
+function(){a.getDimensions();a.o.autoResize?a.setContainerDimensions():a.o.autoPosition&&a.setPosition();m||n?a.fixIE():a.o.modal&&(a.d.iframe&&a.d.iframe.css({height:h[0],width:h[1]}),a.d.overlay.css({height:j[0],width:j[1]}))})},unbindEvents:function(){b("."+this.o.closeClass).unbind("click.simplemodal");l.unbind("keydown.simplemodal");k.unbind(".simplemodal");this.d.overlay.unbind("click.simplemodal")},fixIE:function(){var a=this.o.position;b.each([this.d.iframe||null,!this.o.modal?null:this.d.overlay,
+"fixed"===this.d.container.css("position")?this.d.container:null],function(b,f){if(f){var g=f[0].style;g.position="absolute";if(2>b)g.removeExpression("height"),g.removeExpression("width"),g.setExpression("height",'document.body.scrollHeight > document.body.clientHeight ? document.body.scrollHeight : document.body.clientHeight + "px"'),g.setExpression("width",'document.body.scrollWidth > document.body.clientWidth ? document.body.scrollWidth : document.body.clientWidth + "px"');else{var c,e;a&&a.constructor===
+Array?(c=a[0]?"number"===typeof a[0]?a[0].toString():a[0].replace(/px/,""):f.css("top").replace(/px/,""),c=-1===c.indexOf("%")?c+' + (t = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"':parseInt(c.replace(/%/,""))+' * ((document.documentElement.clientHeight || document.body.clientHeight) / 100) + (t = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"',a[1]&&(e="number"===typeof a[1]?
+a[1].toString():a[1].replace(/px/,""),e=-1===e.indexOf("%")?e+' + (t = document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft) + "px"':parseInt(e.replace(/%/,""))+' * ((document.documentElement.clientWidth || document.body.clientWidth) / 100) + (t = document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft) + "px"')):(c='(document.documentElement.clientHeight || document.body.clientHeight) / 2 - (this.offsetHeight / 2) + (t = document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop) + "px"',
+e='(document.documentElement.clientWidth || document.body.clientWidth) / 2 - (this.offsetWidth / 2) + (t = document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft) + "px"');g.removeExpression("top");g.removeExpression("left");g.setExpression("top",c);g.setExpression("left",e)}}})},focus:function(a){var d=this,a=a&&-1!==b.inArray(a,["first","last"])?a:"first",f=b(":input:enabled:visible:"+a,d.d.wrap);setTimeout(function(){0<f.length?f.focus():d.d.wrap.focus()},
+10)},getDimensions:function(){var a="undefined"===typeof window.innerHeight?k.height():window.innerHeight;j=[l.height(),l.width()];h=[a,k.width()]},getVal:function(a,b){return a?"number"===typeof a?a:"auto"===a?0:0<a.indexOf("%")?parseInt(a.replace(/%/,""))/100*("h"===b?h[0]:h[1]):parseInt(a.replace(/px/,"")):null},update:function(a,b){if(!this.d.data)return!1;this.d.origHeight=this.getVal(a,"h");this.d.origWidth=this.getVal(b,"w");this.d.data.hide();a&&this.d.container.css("height",a);b&&this.d.container.css("width",
+b);this.setContainerDimensions();this.d.data.show();this.o.focus&&this.focus();this.unbindEvents();this.bindEvents()},setContainerDimensions:function(){var a=m||o,d=this.d.origHeight?this.d.origHeight:b.browser.opera?this.d.container.height():this.getVal(a?this.d.container[0].currentStyle.height:this.d.container.css("height"),"h"),a=this.d.origWidth?this.d.origWidth:b.browser.opera?this.d.container.width():this.getVal(a?this.d.container[0].currentStyle.width:this.d.container.css("width"),"w"),f=this.d.data.outerHeight(!0),
+g=this.d.data.outerWidth(!0);this.d.origHeight=this.d.origHeight||d;this.d.origWidth=this.d.origWidth||a;var c=this.o.maxHeight?this.getVal(this.o.maxHeight,"h"):null,e=this.o.maxWidth?this.getVal(this.o.maxWidth,"w"):null,c=c&&c<h[0]?c:h[0],e=e&&e<h[1]?e:h[1],i=this.o.minHeight?this.getVal(this.o.minHeight,"h"):"auto",d=d?this.o.autoResize&&d>c?c:d<i?i:d:f?f>c?c:this.o.minHeight&&"auto"!==i&&f<i?i:f:i,c=this.o.minWidth?this.getVal(this.o.minWidth,"w"):"auto",a=a?this.o.autoResize&&a>e?e:a<c?c:a:
+g?g>e?e:this.o.minWidth&&"auto"!==c&&g<c?c:g:c;this.d.container.css({height:d,width:a});this.d.wrap.css({overflow:f>d||g>a?"auto":"visible"});this.o.autoPosition&&this.setPosition()},setPosition:function(){var a,b;a=h[0]/2-this.d.container.outerHeight(!0)/2;b=h[1]/2-this.d.container.outerWidth(!0)/2;var f="fixed"!==this.d.container.css("position")?k.scrollTop():0;this.o.position&&"[object Array]"===Object.prototype.toString.call(this.o.position)?(a=f+(this.o.position[0]||a),b=this.o.position[1]||
+b):a=f+a;this.d.container.css({left:b,top:a})},watchTab:function(a){if(0<b(a.target).parents(".simplemodal-container").length){if(this.inputs=b(":input:enabled:visible:first, :input:enabled:visible:last",this.d.data[0]),!a.shiftKey&&a.target===this.inputs[this.inputs.length-1]||a.shiftKey&&a.target===this.inputs[0]||0===this.inputs.length)a.preventDefault(),this.focus(a.shiftKey?"last":"first")}else a.preventDefault(),this.focus()},open:function(){this.d.iframe&&this.d.iframe.show();b.isFunction(this.o.onOpen)?
+this.o.onOpen.apply(this,[this.d]):(this.d.overlay.show(),this.d.container.show(),this.d.data.show());this.o.focus&&this.focus();this.bindEvents()},close:function(){if(!this.d.data)return!1;this.unbindEvents();if(b.isFunction(this.o.onClose)&&!this.occb)this.occb=!0,this.o.onClose.apply(this,[this.d]);else{if(this.d.placeholder){var a=b("#simplemodal-placeholder");this.o.persist?a.replaceWith(this.d.data.removeClass("simplemodal-data").css("display",this.display)):(this.d.data.hide().remove(),a.replaceWith(this.d.orig))}else this.d.data.hide().remove();
+this.d.container.hide().remove();this.d.overlay.hide();this.d.iframe&&this.d.iframe.hide().remove();this.d.overlay.remove();this.d={}}}}});
diff --git a/v3/js/jquery.ui.chatbox.js b/v3/js/jquery.ui.chatbox.js
new file mode 100644
index 000000000..47262f296
--- /dev/null
+++ b/v3/js/jquery.ui.chatbox.js
@@ -0,0 +1,271 @@
+/* customized by Philip Guo */
+
+/*
+ * Copyright 2010, Wen Pu (dexterpu at gmail dot com)
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * Check out http://www.cs.illinois.edu/homes/wenpu1/chatbox.html for document
+ *
+ * Depends on jquery.ui.core, jquery.ui.widiget, jquery.ui.effect
+ *
+ * Also uses some styles for jquery.ui.dialog
+ *
+ */
+
+
+// TODO: implement destroy()
+(function($) {
+    $.widget("ui.chatbox", {
+        options: {
+            id: null, //id for the DOM element
+            title: null, // title of the chatbox
+            user: null, // can be anything associated with this chatbox
+            hidden: false,
+            offset: 0, // relative to right edge of the browser window
+            width: 300, // width of the chatbox
+            messageSent: function(id, user, msg) {
+                // override this
+                this.boxManager.addMsg(user.first_name, msg);
+            },
+            chatboxToggled: function(isVisible) {
+                // called when box's contents are toggled opened or closed
+            },
+            boxClosed: function(id) {
+            }, // called when the close icon is clicked
+            boxManager: {
+                // thanks to the widget factory facility
+                // similar to http://alexsexton.com/?p=51
+                init: function(elem) {
+                    this.elem = elem;
+                },
+                addMsg: function(peer, msg) {
+                    var self = this;
+                    var box = self.elem.uiChatboxLog;
+                    var e = document.createElement('div');
+                    box.append(e);
+                    $(e).hide();
+
+                    var systemMessage = false;
+
+                    if (peer) {
+                        var peerName = document.createElement("b");
+                        $(peerName).text(peer + ": ");
+                        e.appendChild(peerName);
+                    } else {
+                        systemMessage = true;
+                    }
+
+                    var msgElement = document.createElement(
+                        systemMessage ? "i" : "span");
+                    $(msgElement).text(msg);
+                    e.appendChild(msgElement);
+                    $(e).addClass("ui-chatbox-msg");
+                    $(e).css("maxWidth", $(box).width());
+                    $(e).fadeIn();
+                    self._scrollToBottom();
+
+                    // pgbovine - don't do this for simplicity
+                    /*
+                    if (!self.elem.uiChatboxTitlebar.hasClass("ui-state-focus")
+                        && !self.highlightLock) {
+                        self.highlightLock = true;
+                        self.highlightBox();
+                    }
+                    */
+                },
+                highlightBox: function() {
+                    var self = this;
+                    self.elem.uiChatboxTitlebar.effect("highlight", {}, 300);
+                    self.elem.uiChatbox.effect("bounce", {times: 3}, 300, function() {
+                        self.highlightLock = false;
+                        self._scrollToBottom();
+                    });
+                },
+                toggleBox: function() {
+                    this.elem.uiChatbox.toggle();
+                },
+                _scrollToBottom: function() {
+                    var box = this.elem.uiChatboxLog;
+                    box.scrollTop(box.get(0).scrollHeight);
+                }
+            }
+        },
+        toggleContent: function(event) {
+            this.uiChatboxContent.toggle();
+            if (this.uiChatboxContent.is(":visible")) {
+                this.uiChatboxInputBox.focus();
+                this.options.chatboxToggled(true);
+            } else {
+                this.options.chatboxToggled(false);
+            }
+        },
+        // pgbovine
+        showContent: function(event) {
+            this.uiChatboxContent.show();
+        },
+        widget: function() {
+            return this.uiChatbox
+        },
+        _create: function() {
+            var self = this,
+            options = self.options,
+            title = options.title || "No Title",
+            // chatbox
+            uiChatbox = (self.uiChatbox = $('<div></div>'))
+                .appendTo(document.body)
+                .addClass('ui-widget ' +
+                          'ui-corner-top ' +
+                          'ui-chatbox'
+                         )
+                .attr('outline', 0)
+                .focusin(function() {
+                    // ui-state-highlight is not really helpful here
+                    //self.uiChatbox.removeClass('ui-state-highlight');
+                    self.uiChatboxTitlebar.addClass('ui-state-focus');
+                })
+                .focusout(function() {
+                    self.uiChatboxTitlebar.removeClass('ui-state-focus');
+                }),
+            // titlebar
+            uiChatboxTitlebar = (self.uiChatboxTitlebar = $('<div></div>'))
+                .addClass('ui-widget-header ' +
+                          'ui-corner-top ' +
+                          'ui-chatbox-titlebar ' +
+                          'ui-dialog-header' // take advantage of dialog header style
+                         )
+                .click(function(event) {
+                    self.toggleContent(event);
+                })
+                .appendTo(uiChatbox),
+            uiChatboxTitle = (self.uiChatboxTitle = $('<span></span>'))
+                .html(title)
+                .appendTo(uiChatboxTitlebar),
+            uiChatboxTitlebarClose = (self.uiChatboxTitlebarClose = $('<a href="#"></a>'))
+                .addClass('ui-corner-all ' +
+                          'ui-chatbox-icon '
+                         )
+                .attr('role', 'button')
+                .hover(function() { uiChatboxTitlebarClose.addClass('ui-state-hover'); },
+                       function() { uiChatboxTitlebarClose.removeClass('ui-state-hover'); })
+                .click(function(event) {
+                    uiChatbox.hide();
+                    self.options.boxClosed(self.options.id);
+                    return false;
+                })
+                .appendTo(uiChatboxTitlebar),
+            uiChatboxTitlebarCloseText = $('<span></span>')
+                .addClass('ui-icon ' +
+                          'ui-icon-closethick')
+                .text('close')
+                .appendTo(uiChatboxTitlebarClose),
+            uiChatboxTitlebarMinimize = (self.uiChatboxTitlebarMinimize = $('<a href="#"></a>'))
+                .addClass('ui-corner-all ' +
+                          'ui-chatbox-icon'
+                         )
+                .attr('role', 'button')
+                .hover(function() { uiChatboxTitlebarMinimize.addClass('ui-state-hover'); },
+                       function() { uiChatboxTitlebarMinimize.removeClass('ui-state-hover'); })
+                .click(function(event) {
+                    self.toggleContent(event);
+                    return false;
+                })
+                .appendTo(uiChatboxTitlebar),
+            uiChatboxTitlebarMinimizeText = $('<span></span>')
+                .addClass('ui-icon ' +
+                          'ui-icon-minusthick')
+                .text('minimize')
+                .appendTo(uiChatboxTitlebarMinimize),
+            // content
+            uiChatboxContent = (self.uiChatboxContent = $('<div></div>'))
+                .addClass('ui-widget-content ' +
+                          'ui-chatbox-content '
+                         )
+                .appendTo(uiChatbox),
+            uiChatboxLog = (self.uiChatboxLog = self.element)
+                .addClass('ui-widget-content ' +
+                          'ui-chatbox-log'
+                         )
+                .appendTo(uiChatboxContent),
+            uiChatboxInput = (self.uiChatboxInput = $('<div></div>'))
+                .addClass('ui-widget-content ' +
+                          'ui-chatbox-input'
+                         )
+                .click(function(event) {
+                    // anything?
+                })
+                .appendTo(uiChatboxContent),
+            uiChatboxInputBox = (self.uiChatboxInputBox = $('<textarea></textarea>'))
+                .addClass('ui-widget-content ' +
+                          'ui-chatbox-input-box ' +
+                          'ui-corner-all'
+                         )
+                .appendTo(uiChatboxInput)
+                .keydown(function(event) {
+                    if (event.keyCode && event.keyCode == $.ui.keyCode.ENTER) {
+                        msg = $.trim($(this).val());
+                        if (msg.length > 0) {
+                            self.options.messageSent(self.options.id, self.options.user, msg);
+                        }
+                        $(this).val('');
+                        return false;
+                    }
+                })
+                .focusin(function() {
+                    uiChatboxInputBox.addClass('ui-chatbox-input-focus');
+                    var box = $(this).parent().prev();
+                    box.scrollTop(box.get(0).scrollHeight);
+                })
+                .focusout(function() {
+                    uiChatboxInputBox.removeClass('ui-chatbox-input-focus');
+                });
+
+            // disable selection
+            uiChatboxTitlebar.find('*').add(uiChatboxTitlebar).disableSelection();
+
+            // switch focus to input box when whatever clicked
+            uiChatboxContent.children().click(function() {
+                // click on any children, set focus on input box
+                self.uiChatboxInputBox.focus();
+            });
+
+            self._setWidth(self.options.width);
+            self._position(self.options.offset);
+
+            self.options.boxManager.init(self);
+
+            if (!self.options.hidden) {
+                uiChatbox.show();
+            }
+        },
+        _setOption: function(option, value) {
+            if (value != null) {
+                switch (option) {
+                case "hidden":
+                    if (value)
+                        this.uiChatbox.hide();
+                    else
+                        this.uiChatbox.show();
+                    break;
+                case "offset":
+                    this._position(value);
+                    break;
+                case "width":
+                    this._setWidth(value);
+                    break;
+                }
+            }
+            $.Widget.prototype._setOption.apply(this, arguments);
+        },
+        _setWidth: function(width) {
+            this.uiChatboxTitlebar.width(width + "px");
+            this.uiChatboxLog.width(width + "px");
+            this.uiChatboxInput.css("maxWidth", width + "px");
+            // padding:2, boarder:2, margin:5
+            this.uiChatboxInputBox.css("width", (width - 18) + "px");
+        },
+        _position: function(offset) {
+            this.uiChatbox.css("right", offset);
+        }
+    });
+}(jQuery));
diff --git a/v3/js/matrixtutor.js b/v3/js/matrixtutor.js
new file mode 100644
index 000000000..9dd9f62c3
--- /dev/null
+++ b/v3/js/matrixtutor.js
@@ -0,0 +1,315 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// TODO: refactor to be more like composingprograms.js and use more
+// of the common functionality in opt-frontend-common.js
+
+
+// custom version of opt-frontend.js for ../matrixtutor.html
+
+var originFrontendJsFile = 'matrixtutor.js';
+
+// Pre-reqs:
+// - pytutor.js
+// - jquery.ba-bbq.min.js
+// - opt-frontend-common.js
+// should all be imported BEFORE this file
+
+var problemName = null;
+
+var appMode = 'edit'; // 'edit', 'display', or 'display_no_frills'
+
+var preseededCurInstr = null; // if you passed in a 'curInstr=<number>' in the URL, then set this var
+
+var myVisualizer = null; // singleton ExecutionVisualizer instance
+
+var VIZ_LABEL = "Run and Visualize Code";
+
+
+var pyInputCodeMirror; // CodeMirror object that contains the solution code
+var pyTestInputCodeMirror; // CodeMirror object that contains the test code
+
+
+$(document).ready(function() {
+  useCodeMirror = true; // set global defined in opt-frontend-common.js
+
+  problemName = window.location.search;
+  if (!problemName) {
+    alert("Error! Pass in a valid problem name in the url as '?<problem name>'");
+  }
+  else {
+    problemName = problemName.slice(1); // strip off '?'
+  }
+
+
+  $("#embedLinkDiv,#gradingPane,#pyOutputPane").hide();
+
+  pyInputCodeMirror = CodeMirror(document.getElementById('codeInputPane'), {
+    mode: 'python',
+    lineNumbers: true,
+    tabSize: 4,
+    indentUnit: 4,
+    // convert tab into four spaces:
+    extraKeys: {Tab: function(cm) {cm.replaceSelection("    ", "end");}}
+  });
+  pyInputCodeMirror.setSize(null, '300px');
+
+  pyTestInputCodeMirror = CodeMirror(document.getElementById('testInputPane'), {
+    mode: 'python',
+    lineNumbers: true,
+    tabSize: 4,
+    indentUnit: 4,
+    // convert tab into four spaces:
+    extraKeys: {Tab: function(cm) {cm.replaceSelection("    ", "end");}}
+  });
+  pyTestInputCodeMirror.setSize(null, '100px');
+
+
+  // be friendly to the browser's forward and back buttons
+  // thanks to http://benalman.com/projects/jquery-bbq-plugin/
+  $(window).bind("hashchange", function(e) {
+    appMode = $.bbq.getState('mode'); // assign this to the GLOBAL appMode
+
+    if (appMode === undefined || appMode == 'edit') {
+      $("#pyInputPane").show();
+      $("#pyOutputPane,#gradingPane").hide();
+      $("#embedLinkDiv").hide();
+
+      // destroy all annotation bubbles (NB: kludgy)
+      if (myVisualizer) {
+        myVisualizer.destroyAllAnnotationBubbles();
+      }
+    }
+    else if (appMode == 'display') {
+      $("#pyInputPane").hide();
+      $("#pyOutputPane,#gradingPane").show();
+      $("#embedLinkDiv").show();
+
+      $('#executeBtn').html(VIZ_LABEL);
+      $('#executeBtn').attr('disabled', false);
+
+
+      // do this AFTER making #pyOutputPane visible, or else
+      // jsPlumb connectors won't render properly
+      myVisualizer.updateOutput();
+
+      // customize edit button click functionality AFTER rendering (NB: awkward!)
+      $('#pyOutputPane #editCodeLinkDiv').show();
+      $('#pyOutputPane #editBtn').click(function() {
+        enterEditMode();
+      });
+
+      $('#gradeStdout').val(''); // clear 'em
+      $('#submitGradeBtn').html('Submit for Grading');
+      $('#submitGradeBtn').attr('disabled', false);
+    }
+    else if (appMode == 'display_no_frills') {
+      $("#pyInputPane").hide();
+      $("#pyOutputPane,#gradingPane").show();
+      $("#embedLinkDiv").show();
+    }
+    else {
+      assert(false);
+    }
+
+    $('#urlOutput,#embedCodeOutput').val(''); // clear to avoid stale values
+  });
+
+
+  function executeCode(inputCod, testCod) {
+      backend_script = python3_backend_script;
+
+      var allCod = inputCod + '\n\n# test code (ungraded)\n' + testCod;
+
+      var nCodeLines = inputCod.split('\n').length + 2;
+
+      $('#executeBtn').html("Please wait ... processing your code");
+      $('#executeBtn').attr('disabled', true);
+      $("#pyOutputPane,#gradingPane").hide();
+      $("#embedLinkDiv").hide();
+
+      var backendOptionsObj = {cumulative_mode: false,
+                               heap_primitives: false,
+                               show_only_outputs: false,
+                               py_crazy_mode: false,
+                               origin: originFrontendJsFile};
+
+      var frontendOptionsObj = {updateOutputCallback: function() {$('#urlOutput,#embedCodeOutput').val('');},
+                                compactFuncLabels: true,
+                                jumpToEnd: true,
+                               }
+
+      function f1(errorLineNo) {
+        pyInputCodeMirror.removeLineClass(errorLineNo, null, 'errorLine'); // reset line back to normal
+        pyInputCodeMirror.off('change', f1);
+      }
+      function f2(errorLineNo) {
+        pyTestInputCodeMirror.removeLineClass(errorLineNo, null, 'errorLine'); // reset line back to normal
+        pyTestInputCodeMirror.off('change', f2);
+      }
+
+      function handleUncaughtExceptionFunc(trace) {
+        if (trace.length == 1) {
+          var errorLineNo = trace[0].line - 1; /* CodeMirror lines are zero-indexed */
+          if (errorLineNo !== undefined) {
+            if (errorLineNo < nCodeLines) {
+              // highlight the faulting line in pyInputCodeMirror
+              pyInputCodeMirror.focus();
+              pyInputCodeMirror.setCursor(errorLineNo, 0);
+              pyInputCodeMirror.addLineClass(errorLineNo, null, 'errorLine');
+              pyInputCodeMirror.on('change', f1.bind(errorLineNo));
+            }
+            else {
+              // instead highlight the faulting line in pyTestInputCodeMirror
+              errorLineNo -= nCodeLines;
+
+              pyTestInputCodeMirror.focus();
+              pyTestInputCodeMirror.setCursor(errorLineNo, 0);
+              pyTestInputCodeMirror.addLineClass(errorLineNo, null, 'errorLine');
+              pyTestInputCodeMirror.on('change', f2.bind(errorLineNo));
+            }
+          }
+
+          $('#executeBtn').html(VIZ_LABEL);
+          $('#executeBtn').attr('disabled', false);
+        }
+      }
+
+      executeCodeAndCreateViz(allCod,
+                              backend_script, backendOptionsObj,
+                              frontendOptionsObj,
+                              'pyOutputPane',
+                              enterDisplayMode, handleUncaughtExceptionFunc);
+  }
+
+  function executeCodeFromScratch() {
+    var inputCod = pyInputCodeMirror.getValue();
+    var testCod = pyTestInputCodeMirror.getValue();
+
+    // don't execute empty string:
+    if (($.trim(inputCod) == '') && ($.trim(testCod) == '')) {
+      alert('Type in some code to visualize.');
+      return;
+    }
+
+    executeCode(inputCod, testCod);
+  }
+
+  $("#executeBtn").attr('disabled', false);
+  $("#executeBtn").click(executeCodeFromScratch);
+
+
+  var queryStrOptions = getQueryStringOptions();
+
+  appMode = queryStrOptions.appMode; // assign this to the GLOBAL appMode
+  if ((appMode == "display") && queryStrOptions.preseededCode /* jump to display only with pre-seeded code */) {
+    preseededCurInstr = queryStrOptions.preseededCurInstr; // ugly global
+    $("#executeBtn").trigger('click');
+  }
+  else {
+    if (appMode === undefined) {
+      // default mode is 'edit', don't trigger a "hashchange" event
+      appMode = 'edit';
+    }
+    else {
+      // fail-soft by killing all passed-in hashes and triggering a "hashchange"
+      // event, which will then go to 'edit' mode
+      $.bbq.removeState();
+    }
+  }
+
+
+  // log a generic AJAX error handler
+  $(document).ajaxError(function() {
+    alert("Server error (possibly due to memory/resource overload). " +
+          "Report a bug to philip@pgbovine.net\n\n" +
+          "(Click the 'Generate URL' button to include a unique URL in your email bug report.)");
+
+    $('#executeBtn').html(VIZ_LABEL);
+    $('#executeBtn').attr('disabled', false);
+  });
+
+
+  // redraw connector arrows on window resize
+  $(window).resize(function() {
+    if (appMode == 'display') {
+      myVisualizer.redrawConnectors();
+    }
+  });
+
+  if (problemName) {
+    $.get('load_matrix_problem.py',
+          {problem_name: problemName},
+          function(dataFromBackend) {
+            if (dataFromBackend.status == 'error') {
+              alert("Error: " + problemName + " is not a valid problem name");
+            }
+            else {
+              pyInputCodeMirror.setValue(dataFromBackend.code.rtrim());
+              pyTestInputCodeMirror.setValue(dataFromBackend.test.rtrim());
+              $(".problemDescClass").html(dataFromBackend.description);
+            }
+          },
+          "json");
+
+    $('#submitGradeBtn').bind('click', function() {
+      $('#submitGradeBtn').html('Now Grading ...');
+      $('#submitGradeBtn').attr('disabled', true);
+
+      // some JSONP action!
+      // http://learn.jquery.com/ajax/working-with-jsonp/
+      $.ajax({
+        url: "http://104.237.139.253:4000/grade",
+        // The name of the callback parameter, as specified by the YQL service
+        jsonp: "callback",
+        // Tell jQuery we're expecting JSONP
+        dataType: "jsonp",
+        data: {submitted_code: pyInputCodeMirror.getValue(),
+               problem_name: problemName},
+
+        // Work with the response
+        success: function(dataFromBackend) {
+          if (dataFromBackend.err) {
+            $('#gradeStdout').val(dataFromBackend.err);
+          } else {
+            if (dataFromBackend.user_stderr) {
+              $('#gradeStdout').val(dataFromBackend.user_stdout + '\nErrors:\n' + dataFromBackend.user_stderr);
+            } else {
+              $('#gradeStdout').val(dataFromBackend.user_stdout);
+            }
+
+          }
+
+          $('#submitGradeBtn').html('Submit for Grading');
+          $('#submitGradeBtn').attr('disabled', false);
+        },
+      });
+    });
+  }
+});
diff --git a/v3/js/opt-frontend-common.js b/v3/js/opt-frontend-common.js
new file mode 100644
index 000000000..0a3156627
--- /dev/null
+++ b/v3/js/opt-frontend-common.js
@@ -0,0 +1,2147 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+// include this file BEFORE any OPT frontend file
+
+
+// backend scripts to execute (Python 2 and 3 variants, if available)
+// make two copies of ../web_exec.py and give them the following names,
+// then change the first line (starting with #!) to the proper version
+// of the Python interpreter (i.e., Python 2 or Python 3).
+// Note that your hosting provider might have stringent rules for what
+// kind of scripts are allowed to execute. For instance, my provider
+// (Webfaction) seems to let scripts execute only if permissions are
+// something like:
+// -rwxr-xr-x 1 pgbovine pgbovine 2.5K Jul  5 22:46 web_exec_py2.py*
+// (most notably, only the owner of the file should have write
+//  permissions)
+//var python2_backend_script = 'web_exec_py2.py';
+//var python3_backend_script = 'web_exec_py3.py';
+
+// uncomment below if you're running on Google App Engine using the built-in app.yaml
+var python2_backend_script = 'exec';
+var python3_backend_script = 'exec';
+
+// KRAZY experimental KODE!!! Use a custom hacked CPython interpreter
+var python2crazy_backend_script = 'web_exec_py2-crazy.py';
+// On Google App Engine, simply run dev_appserver.py with the
+// crazy custom py2crazy CPython interpreter to get 2crazy mode
+//var python2crazy_backend_script = 'exec';
+
+// empty dummy just to do logging on the Apache's server
+var js_backend_script = 'web_exec_js.py';
+var ts_backend_script = 'web_exec_ts.py';
+var java_backend_script = 'web_exec_java.py';
+var ruby_backend_script = 'web_exec_ruby.py';
+
+// this is customized to my own Linode server:
+// these are the REAL endpoints, accessed via jsonp. code is in ../../v4-cokapi/
+if (window.location.protocol === 'https:') {
+  // my certificate for https is registered via cokapi.com, so use it for now:
+  var JS_JSONP_ENDPOINT = 'https://cokapi.com:8001/exec_js_jsonp';
+  var TS_JSONP_ENDPOINT = 'https://cokapi.com:8001/exec_ts_jsonp';
+  var JAVA_JSONP_ENDPOINT = 'https://cokapi.com:8001/exec_java_jsonp';
+  var RUBY_JSONP_ENDPOINT = 'https://cokapi.com:8001/exec_ruby_jsonp';
+} else {
+  var JS_JSONP_ENDPOINT = 'http://104.237.139.253:3000/exec_js_jsonp'; // for deployment
+  var TS_JSONP_ENDPOINT = 'http://104.237.139.253:3000/exec_ts_jsonp'; // for deployment
+  var JAVA_JSONP_ENDPOINT = 'http://104.237.139.253:3000/exec_java_jsonp'; // for deployment
+  var RUBY_JSONP_ENDPOINT = 'http://104.237.139.253:3000/exec_ruby_jsonp'; // for deployment
+}
+
+
+function langToBackendScript(lang) {
+  var backend_script = null;
+  if (lang == '2') {
+      backend_script = python2_backend_script;
+  } else if (lang == '3') {
+      backend_script = python3_backend_script;
+  } else if (lang == '2crazy') {
+      backend_script = python2crazy_backend_script;
+  } else if (lang == 'js') {
+      backend_script = js_backend_script;
+  } else if (lang == 'ts') {
+      backend_script = ts_backend_script;
+  } else if (lang == 'ruby') {
+      backend_script = ruby_backend_script;
+  } else if (lang == 'java') {
+      backend_script = java_backend_script;
+  }
+  assert(backend_script);
+  return backend_script;
+}
+
+
+var domain = "http://pythontutor.com/"; // for deployment
+
+
+var isExecutingCode = false; // nasty, nasty global
+
+var appMode = 'edit'; // 'edit' or 'display'. also support
+                      // 'visualize' for backward compatibility (same as 'display')
+
+var pyInputCodeMirror; // CodeMirror object that contains the input code
+var pyInputAceEditor; // Ace editor object that contains the input code
+
+var useCodeMirror = false; // true -> use CodeMirror, false -> use Ace
+
+// a list of previous consecutive executions with "compile"-time exceptions
+var prevExecutionExceptionObjLst = [];
+
+
+var loggingSocketIO = undefined; // socket.io instance -- OPTIONAL: not all frontends use it
+
+// From http://stackoverflow.com/a/8809472
+function generateUUID(){
+    var d = new Date().getTime();
+    var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
+        var r = (d + Math.random()*16)%16 | 0;
+        d = Math.floor(d/16);
+        return (c=='x' ? r : (r&0x7|0x8)).toString(16);
+    });
+    return uuid;
+};
+
+var sessionUUID = generateUUID(); // remains constant throughout one page load ("session")
+
+
+// OMG nasty wtf?!?
+
+// From: http://stackoverflow.com/questions/21159301/quotaexceedederror-dom-exception-22-an-attempt-was-made-to-add-something-to-st
+
+// Safari, in Private Browsing Mode, looks like it supports localStorage but all calls to setItem
+// throw QuotaExceededError. We're going to detect this and just silently drop any calls to setItem
+// to avoid the entire page breaking, without having to do a check at each usage of Storage.
+if (typeof localStorage === 'object') {
+    try {
+        localStorage.setItem('localStorage', 1);
+        localStorage.removeItem('localStorage');
+    } catch (e) {
+        Storage.prototype._setItem = Storage.prototype.setItem;
+        Storage.prototype.setItem = function() {};
+        alert('Your web browser does not support storing settings locally. In Safari, the most common cause of this is using "Private Browsing Mode". Some settings may not save or some features may not work properly for you.');
+    }
+}
+
+
+var dmp = new diff_match_patch();
+var curCode = '';
+var deltaObj = undefined;
+
+function initDeltaObj() {
+  // make sure the editor already exists
+  // (editor doesn't exist when you're, say, doing an iframe embed)
+  if (!pyInputAceEditor && !pyInputCodeMirror) {
+    return;
+  }
+
+  // v is the version number
+  //   1 (version 1 was released on 2014-11-05)
+  //   2 (version 2 was released on 2015-09-16, added a startTime field)
+  deltaObj = {start: pyInputGetValue(), deltas: [], v: 2,
+              startTime: new Date().getTime()};
+}
+
+function initAceEditor(height) {
+  pyInputAceEditor = ace.edit('codeInputPane');
+  var s = pyInputAceEditor.getSession();
+  // tab -> 4 spaces
+  s.setTabSize(4);
+  s.setUseSoftTabs(true);
+  // disable extraneous indicators:
+  s.setFoldStyle('manual'); // no code folding indicators
+  pyInputAceEditor.setHighlightActiveLine(false);
+  pyInputAceEditor.setShowPrintMargin(false);
+  pyInputAceEditor.setBehavioursEnabled(false);
+
+  // auto-grow height as fit
+  pyInputAceEditor.setOptions({minLines: 18, maxLines: 1000});
+
+  $('#codeInputPane').css('width', '700px');
+  $('#codeInputPane').css('height', height + 'px'); // VERY IMPORTANT so that it works on I.E., ugh!
+
+  initDeltaObj();
+  pyInputAceEditor.on('change', function(e) {
+    $.doTimeout('pyInputAceEditorChange', 1000, snapshotCodeDiff); // debounce
+    clearFrontendError();
+    s.clearAnnotations();
+  });
+
+  // don't do real-time syntax checks:
+  // https://github.com/ajaxorg/ace/wiki/Syntax-validation
+  s.setOption("useWorker", false);
+
+  setAceMode();
+
+  pyInputAceEditor.focus();
+}
+
+var JAVA_BLANK_TEMPLATE = 'public class YourClassNameHere {\n\
+    public static void main(String[] args) {\n\
+\n\
+    }\n\
+}'
+
+function setAceMode() {
+  var selectorVal = $('#pythonVersionSelector').val();
+  var mod;
+  var tabSize = 2;
+  if (selectorVal === 'java') {
+    mod = 'java';
+    // if blank empty, then initialize to a Java skeleton:
+    if ($.trim(pyInputGetValue()) === '') {
+      pyInputSetValue(JAVA_BLANK_TEMPLATE);
+    }
+  } else if (selectorVal === 'js') {
+    mod = 'javascript';
+    // if it's just a Java skeleton, then reset to blank:
+    if (pyInputGetValue() === JAVA_BLANK_TEMPLATE) {
+      pyInputSetValue('');
+    }
+  } else if (selectorVal === 'ts') {
+    mod = 'typescript';
+    // if it's just a Java skeleton, then reset to blank:
+    if (pyInputGetValue() === JAVA_BLANK_TEMPLATE) {
+      pyInputSetValue('');
+    }
+  } else if (selectorVal === 'ruby') {
+    mod = 'ruby';
+    // if it's just a Java skeleton, then reset to blank:
+    if (pyInputGetValue() === JAVA_BLANK_TEMPLATE) {
+      pyInputSetValue('');
+    }
+  } else {
+    mod = 'python';
+    tabSize = 4; // PEP8
+    // if it's just a Java skeleton, then reset to blank:
+    if (pyInputGetValue() === JAVA_BLANK_TEMPLATE) {
+      pyInputSetValue('');
+    }
+  }
+  assert(mod);
+
+  var s = pyInputAceEditor.getSession();
+  s.setMode("ace/mode/" + mod);
+  s.setTabSize(tabSize);
+  s.setUseSoftTabs(true);
+
+  // clear all error displays when switching modes
+  var s = pyInputAceEditor.getSession();
+  s.clearAnnotations();
+  clearFrontendError();
+}
+
+function snapshotCodeDiff() {
+  if (!deltaObj) {
+    return;
+  }
+
+  var newCode = pyInputGetValue();
+  var timestamp = new Date().getTime();
+
+  //console.log('Orig:', curCode);
+  //console.log('New:', newCode);
+  if (curCode != newCode) {
+    var diff = dmp.diff_toDelta(dmp.diff_main(curCode, newCode));
+    //var patch = dmp.patch_toText(dmp.patch_make(curCode, newCode));
+    var delta = {t: timestamp, d: diff};
+    deltaObj.deltas.push(delta);
+
+    curCode = newCode;
+    logEvent({type: 'editCode', delta: delta});
+
+    if (typeof TogetherJS !== 'undefined' && TogetherJS.running) {
+      TogetherJS.send({type: "editCode", delta: delta});
+    }
+  }
+}
+
+function reconstructCode() {
+  var cur = '';
+
+  var dmp = new diff_match_patch();
+  var deltas = [];
+  var patches = [];
+
+  var prevTimestamp = undefined;
+  $.each(deltaObj.deltas, function(i, e) {
+    if (prevTimestamp) {
+      assert(e.t >= prevTimestamp);
+      prevTimestamp = e.t;
+    }
+    deltas.push(e.d);
+    patches.push(e.p);
+  });
+
+  console.log(patches);
+  console.log(deltas);
+
+  //var d = dmp.diff_fromDelta('', "+x = 1")
+  //var p = dmp.patch_make(d)
+  //dmp.patch_apply(p, '')
+
+  //x = dmp.patch_fromText("@@ -0,0 +1,5 @@\n+x = 1\n")
+  //dmp.patch_apply(x, '')
+  //x = dmp.patch_fromText("@@ -1,5 +1,12 @@\n x = 1\n+%0Ax = 2%0A\n")
+  //dmp.patch_apply(x, 'x = 1')
+}
+
+
+// BEGIN - shared session stuff
+
+// grab this as early as possible before TogetherJS munges the URL
+var togetherjsInUrl = ($.bbq.getState('togetherjs') !== undefined);
+
+// XXX: to deploy, substitute in the online TogetherJS server URL here
+var TogetherJSConfig_hubBase = "http://localhost:30035/"; // local
+
+// TogetherJS common configuration
+var TogetherJSConfig_disableWebRTC = true;
+var TogetherJSConfig_suppressJoinConfirmation = true;
+var TogetherJSConfig_dontShowClicks = false;
+
+// stop popping up boring intro dialog box:
+var TogetherJSConfig_seenIntroDialog = true;
+
+// suppress annoying pop-ups:
+var TogetherJSConfig_suppressInvite = true;
+var TogetherJSConfig_suppressJoinConfirmation = true;
+
+// clone clicks ONLY in certain elements to keep things simple:
+var TogetherJSConfig_cloneClicks = '#pyInputPane select';
+
+var TogetherJSConfig_siteName = "Online Python Tutor shared session";
+var TogetherJSConfig_toolName = "Online Python Tutor shared session";
+
+// more nasty global state vars
+var updateOutputSignalFromRemote = false;
+var executeCodeSignalFromRemote = false;
+var togetherjsSyncRequested = false;
+var pendingCodeOutputScrollTop = null;
+
+TogetherJSConfig_ignoreForms = ['.togetherjsIgnore']; // do NOT sync these elements
+
+
+function requestSync() {
+  if (TogetherJS.running) {
+    togetherjsSyncRequested = true;
+    TogetherJS.send({type: "requestSync"});
+  }
+}
+
+function syncAppState(appState) {
+  setToggleOptions(appState);
+
+  // VERY VERY subtle -- temporarily prevent TogetherJS from sending
+  // form update events while we set the input value. otherwise
+  // this will send an incorrect delta to the other end and screw things
+  // up because the initial states of the two forms aren't equal.
+  var orig = TogetherJS.config.get('ignoreForms');
+  TogetherJS.config('ignoreForms', true);
+  pyInputSetValue(appState.code);
+  TogetherJS.config('ignoreForms', orig);
+
+  if (appState.rawInputLst) {
+    rawInputLst = $.parseJSON(appState.rawInputLstJSON);
+  }
+  else {
+    rawInputLst = [];
+  }
+}
+
+
+// get OPT ready for integration with TogetherJS
+function initTogetherJS() {
+  if (togetherjsInUrl) {
+    $("#ssDiv").hide(); // hide ASAP!
+    $("#togetherjsStatus").html("Please wait ... loading shared session");
+  }
+
+
+  // clear your name from the cache every time to prevent privacy leaks
+  if (supports_html5_storage()) {
+    localStorage.removeItem('togetherjs.settings.name');
+  }
+
+
+  // This event triggers when you first join a session and say 'hello',
+  // and then one of your peers says hello back to you. If they have the
+  // exact same name as you, then change your own name to avoid ambiguity.
+  // Remember, they were here first (that's why they're saying 'hello-back'),
+  // so they keep their own name, but you need to change yours :)
+  TogetherJS.hub.on("togetherjs.hello-back", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    var p = TogetherJS.require("peers");
+
+    var peerNames = p.getAllPeers().map(function(e) {return e.name});
+
+    if (msg.name == p.Self.name) {
+      var newName = undefined;
+      var toks = msg.name.split(' ');
+      var count = Number(toks[1]);
+
+      // make sure the name is truly unique, incrementing count as necessary
+      do {
+        if (!isNaN(count)) {
+          newName = toks[0] + ' ' + String(count + 1); // e.g., "Tutor 3"
+          count++;
+        }
+        else {
+          // the original name was something like "Tutor", so make
+          // newName into, say, "Tutor 2"
+          newName = p.Self.name + ' 2';
+          count = 2;
+        }
+      } while ($.inArray(newName, peerNames) >= 0); // i.e., is newName in peerNames?
+
+      p.Self.update({name: newName}); // change our own name
+    }
+  });
+
+  TogetherJS.hub.on("updateOutput", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    if (isExecutingCode) {
+      return;
+    }
+
+    if (myVisualizer) {
+      // to prevent this call to updateOutput from firing its own TogetherJS event
+      updateOutputSignalFromRemote = true;
+      try {
+        myVisualizer.renderStep(msg.step);
+      }
+      finally {
+        updateOutputSignalFromRemote = false;
+      }
+    }
+  });
+
+  TogetherJS.hub.on("executeCode", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    if (isExecutingCode) {
+      return;
+    }
+
+    executeCodeSignalFromRemote = true;
+    try {
+      executeCode(msg.forceStartingInstr, msg.rawInputLst);
+    }
+    finally {
+      executeCodeSignalFromRemote = false;
+    }
+
+  });
+
+  TogetherJS.hub.on("hashchange", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    if (isExecutingCode) {
+      return;
+    }
+
+    console.log("TogetherJS RECEIVE hashchange", msg.appMode);
+    if (msg.appMode != appMode) {
+      updateAppDisplay(msg.appMode);
+
+      if (appMode == 'edit' && msg.codeInputScrollTop !== undefined &&
+          pyInputGetScrollTop() != msg.codeInputScrollTop) {
+        // hack: give it a bit of time to settle first ...
+        $.doTimeout('pyInputCodeMirrorInit', 200, function() {
+          pyInputSetScrollTop(msg.codeInputScrollTop);
+        });
+      }
+    }
+  });
+
+  TogetherJS.hub.on("codemirror-edit", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+    $("#codeInputWarnings").hide();
+    $("#someoneIsTypingDiv").show();
+
+    $.doTimeout('codeMirrorWarningTimeout', 1000, function() { // debounce
+      $("#codeInputWarnings").show();
+      $("#someoneIsTypingDiv").hide();
+    });
+  });
+
+  TogetherJS.hub.on("requestSync", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    if (TogetherJS.running) {
+      TogetherJS.send({type: "myAppState",
+                       myAppState: getAppState(),
+                       codeInputScrollTop: pyInputGetScrollTop(),
+                       pyCodeOutputDivScrollTop: myVisualizer ?
+                                                 myVisualizer.domRoot.find('#pyCodeOutputDiv').scrollTop() :
+                                                 undefined});
+    }
+  });
+
+  TogetherJS.hub.on("myAppState", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    // if we didn't explicitly request a sync, then don't do anything
+    if (!togetherjsSyncRequested) {
+      return;
+    }
+
+    togetherjsSyncRequested = false;
+
+    var learnerAppState = msg.myAppState;
+
+    if (learnerAppState.mode == 'display') {
+      if (appStateEq(getAppState(), learnerAppState)) {
+        // update curInstr only
+        console.log("on:myAppState - app states equal, renderStep", learnerAppState.curInstr);
+        myVisualizer.renderStep(learnerAppState.curInstr);
+
+        if (msg.pyCodeOutputDivScrollTop !== undefined) {
+          myVisualizer.domRoot.find('#pyCodeOutputDiv').scrollTop(msg.pyCodeOutputDivScrollTop);
+        }
+      }
+      else if (!isExecutingCode) { // if already executing from a prior signal, ignore
+        console.log("on:myAppState - app states unequal, executing", learnerAppState);
+        syncAppState(learnerAppState);
+
+        executeCodeSignalFromRemote = true;
+        try {
+          if (msg.pyCodeOutputDivScrollTop !== undefined) {
+            pendingCodeOutputScrollTop = msg.pyCodeOutputDivScrollTop; // NASTY global
+          }
+          executeCode(learnerAppState.curInstr);
+        }
+        finally {
+          executeCodeSignalFromRemote = false;
+        }
+      }
+    }
+    else {
+      assert(learnerAppState.mode == 'edit');
+      if (!appStateEq(getAppState(), learnerAppState)) {
+        console.log("on:myAppState - edit mode sync");
+        syncAppState(learnerAppState);
+        enterEditMode();
+      }
+    }
+
+    if (msg.codeInputScrollTop !== undefined) {
+      // give pyInputCodeMirror/pyInputAceEditor a bit of time to settle with
+      // its new value. this is hacky; ideally we have a callback function for
+      // when setValue() completes.
+      $.doTimeout('pyInputCodeMirrorInit', 200, function() {
+        pyInputSetScrollTop(msg.codeInputScrollTop);
+      });
+    }
+  });
+
+  TogetherJS.hub.on("syncAppState", function(msg) {
+    syncAppState(msg.myAppState);
+  });
+
+  TogetherJS.hub.on("codeInputScroll", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+    if (useCodeMirror) {
+      pyInputSetScrollTop(msg.scrollTop);
+    }
+    else {
+      // don't sync for Ace since I can't get it working properly yet
+    }
+  });
+
+  TogetherJS.hub.on("pyCodeOutputDivScroll", function(msg) {
+    // do NOT use a msg.sameUrl guard since that will miss some signals
+    // due to our funky URLs
+
+    if (myVisualizer) {
+      myVisualizer.domRoot.find('#pyCodeOutputDiv').scrollTop(msg.scrollTop);
+    }
+  });
+
+  $("#sharedSessionBtn").click(startSharedSession);
+  $("#stopTogetherJSBtn").click(TogetherJS); // toggles off
+
+  // fired when TogetherJS is activated. might fire on page load if there's
+  // already an open session from a prior page load in the recent past.
+  TogetherJS.on("ready", function () {
+    console.log("TogetherJS ready");
+
+    $("#sharedSessionDisplayDiv").show();
+    $("#adInfo").hide();
+    $("#ssDiv").hide();
+    $("#adHeader").hide();
+
+    // send this to the server for the purposes of logging, but other
+    // clients shouldn't do anything with this data
+    if (TogetherJS.running) {
+      TogetherJS.send({type: "initialAppState",
+                       myAppState: getAppState(),
+                       user_uuid: supports_html5_storage() ? localStorage.getItem('opt_uuid') : undefined,
+                       // so that you can tell whether someone else
+                       // shared a TogetherJS URL with you to invite you
+                       // into this shared session:
+                       togetherjsInUrl: togetherjsInUrl});
+    }
+
+    requestSync(); // immediately try to sync upon startup so that if
+                   // others are already in the session, we will be
+                   // synced up. and if nobody is here, then this is a NOP.
+
+    TogetherjsReadyHandler(); // needs to be defined in each frontend
+    redrawConnectors(); // update all arrows at the end
+  });
+
+  // emitted when TogetherJS is closed. This is not emitted when the
+  // webpage simply closes or navigates elsewhere, ONLY when TogetherJS
+  // is explicitly stopped via a call to TogetherJS()
+  TogetherJS.on("close", function () {
+    console.log("TogetherJS close");
+
+    $("#togetherjsStatus").html(''); // clear it
+    $("#sharedSessionDisplayDiv").hide();
+    $("#adInfo").show();
+    $("#ssDiv").show();
+    $("#adHeader").show();
+
+    TogetherjsCloseHandler(); // needs to be defined in each frontend
+    redrawConnectors(); // update all arrows at the end
+  });
+}
+
+function TogetherjsReadyHandler() {
+  alert("ERROR: need to override TogetherjsReadyHandler()");
+}
+
+function TogetherjsCloseHandler() {
+  alert("ERROR: need to override TogetherjsCloseHandler()");
+}
+
+function startSharedSession() {
+  $("#ssDiv").hide(); // hide ASAP!
+  $("#togetherjsStatus").html("Please wait ... loading shared session");
+  TogetherJS();
+}
+
+function populateTogetherJsShareUrl() {
+  // without anything after the '#' in the hash
+  var cleanUrl = $.param.fragment(location.href, {}, 2 /* override */);
+  var urlToShare = cleanUrl + 'togetherjs=' + TogetherJS.shareId();
+  $("#togetherjsStatus").html('<div>\
+                               Send the URL below to invite someone to join this shared session:\
+                               </div>\
+                               <input type="text" style="font-size: 10pt; \
+                               font-weight: bold; padding: 4px;\
+                               margin-top: 3pt; \
+                               margin-bottom: 6pt;" \
+                               id="togetherjsURL" size="80" readonly="readonly"/>\
+                               <button id="syncBtn" type="button">Force sync</button>\
+                               ');
+  $("#togetherjsURL").val(urlToShare).attr('size', urlToShare.length + 20);
+  $("#syncBtn").click(requestSync);
+
+  // deployed on 2015-03-06
+  $("#togetherjsStatus").append(emailNotificationHtml);
+
+  // append post shared session survey
+  //
+  // survey for shared sessions, deployed on 2014-06-06, taken down on
+  // 2015-03-06 due to lack of useful responses
+  /*
+  $("#togetherjsStatus").append(postSessionSurvey);
+  $('.star-rating :radio').change(function() {
+    if (TogetherJS.running) {
+      TogetherJS.send({type: "surveyHowUsefulStars",
+                       stars: Number(this.value)});
+    }
+  });
+
+  $('#submitSessionSurveyBtn').click(function() {
+    var resp = $('#sharedSessionWhatLearned').val();
+    if (TogetherJS.running && resp) {
+      TogetherJS.send({type: "surveyFreetextQuestion",
+                       question: "What did you just learn?",
+                       answer: $('#sharedSessionWhatLearned').val()});
+
+      $("#sharedSessionWhatLearned").val('');
+      $("#sharedSessionWhatLearnedThanks").show();
+      $.doTimeout('sharedSessionWhatLearnedThanksFadeOut', 1000, function() {
+        $("#sharedSessionWhatLearnedThanks").fadeOut(2000);
+      });
+    }
+  });
+  */
+}
+
+// END - shared session stuff
+
+
+var myVisualizer = null; // singleton ExecutionVisualizer instance
+
+var rawInputLst = []; // a list of strings inputted by the user in response to raw_input or mouse_input events
+
+
+// each frontend must implement its own executeCode function
+function executeCode() {
+  alert("Configuration error. Need to override executeCode(). This is an empty stub.");
+}
+
+function redrawConnectors() {
+  if (appMode == 'display' || appMode == 'visualize' /* deprecated */) {
+    if (myVisualizer) {
+      myVisualizer.redrawConnectors();
+    }
+  }
+}
+
+function setFronendError(lines) {
+  $("#frontendErrorOutput").html(lines.map(htmlspecialchars).join('<br/>'));
+  $("#frontendErrorOutput").show();
+}
+
+function clearFrontendError() {
+  $("#frontendErrorOutput").hide();
+}
+
+
+// From http://diveintohtml5.info/storage.html
+function supports_html5_storage() {
+  try {
+    return 'localStorage' in window && window['localStorage'] !== null;
+  } catch (e) {
+    return false;
+  }
+}
+
+// abstraction so that we can use either CodeMirror or Ace as our code editor
+function pyInputGetValue() {
+  if (useCodeMirror) {
+    return pyInputCodeMirror.getValue();
+  }
+  else {
+    return pyInputAceEditor.getValue();
+  }
+}
+
+function pyInputSetValue(dat) {
+  if (useCodeMirror) {
+    pyInputCodeMirror.setValue(dat.rtrim() /* kill trailing spaces */);
+  }
+  else {
+    pyInputAceEditor.setValue(dat.rtrim() /* kill trailing spaces */,
+                              -1 /* do NOT select after setting text */);
+  }
+
+  $('#urlOutput,#embedCodeOutput').val('');
+
+  clearFrontendError();
+
+  // also scroll to top to make the UI more usable on smaller monitors
+  $(document).scrollTop(0);
+}
+
+
+var codeMirrorScroller = '#codeInputPane .CodeMirror-scroll';
+
+function pyInputGetScrollTop() {
+  if (useCodeMirror) {
+    return $(codeMirrorScroller).scrollTop();
+  }
+  else {
+    return pyInputAceEditor.getSession().getScrollTop();
+  }
+}
+
+function pyInputSetScrollTop(st) {
+  if (useCodeMirror) {
+    $(codeMirrorScroller).scrollTop(st);
+  }
+  else {
+    pyInputAceEditor.getSession().setScrollTop(st);
+  }
+}
+
+
+var num414Tries = 0; // hacky global
+
+// run at the END so that everything else can be initialized first
+function genericOptFrontendReady() {
+  initTogetherJS(); // initialize early
+
+
+  // be friendly to the browser's forward and back buttons
+  // thanks to http://benalman.com/projects/jquery-bbq-plugin/
+  $(window).bind("hashchange", function(e) {
+    // if you've got some preseeded code, then parse the entire query
+    // string from scratch just like a page reload
+    if ($.bbq.getState('code')) {
+      parseQueryString();
+    }
+    // otherwise just do an incremental update
+    else {
+      var newMode = $.bbq.getState('mode');
+      //console.log('hashchange:', newMode, window.location.hash);
+      updateAppDisplay(newMode);
+    }
+
+    if (TogetherJS.running && !isExecutingCode) {
+      TogetherJS.send({type: "hashchange",
+                       appMode: appMode,
+                       codeInputScrollTop: pyInputGetScrollTop(),
+                       myAppState: getAppState()});
+    }
+  });
+
+
+  if (useCodeMirror) {
+    pyInputCodeMirror = CodeMirror(document.getElementById('codeInputPane'), {
+      mode: 'python',
+      lineNumbers: true,
+      tabSize: 4,
+      indentUnit: 4,
+      // convert tab into four spaces:
+      extraKeys: {Tab: function(cm) {cm.replaceSelection("    ", "end");}}
+    });
+
+    pyInputCodeMirror.setSize(null, '420px');
+  }
+  else {
+    initAceEditor(420);
+  }
+
+
+  if (useCodeMirror) {
+    // for shared sessions
+    pyInputCodeMirror.on("change", function(cm, change) {
+      // only trigger when the user explicitly typed something
+      if (change.origin != 'setValue') {
+        if (TogetherJS.running) {
+          TogetherJS.send({type: "codemirror-edit"});
+        }
+      }
+    });
+  }
+  else {
+    pyInputAceEditor.getSession().on("change", function(e) {
+      // unfortunately, Ace doesn't detect whether a change was caused
+      // by a setValue call
+      if (TogetherJS.running) {
+        TogetherJS.send({type: "codemirror-edit"});
+      }
+    });
+  }
+
+
+  if (useCodeMirror) {
+    $(codeMirrorScroller).scroll(function(e) {
+      if (TogetherJS.running) {
+        var elt = $(this);
+        $.doTimeout('codeInputScroll', 100, function() { // debounce
+          // note that this will send a signal back and forth both ways
+          // (there's no easy way to prevent this), but it shouldn't keep
+          // bouncing back and forth indefinitely since no the second signal
+          // causes no additional scrolling
+          TogetherJS.send({type: "codeInputScroll",
+                           scrollTop: elt.scrollTop()});
+        });
+      }
+    });
+  }
+  else {
+    // don't sync for Ace since I can't get it working properly yet
+    /*
+    pyInputAceEditor.getSession().on('changeScrollTop', function() {
+      if (TogetherJS.running) {
+        $.doTimeout('codeInputScroll', 100, function() { // debounce
+          // note that this will send a signal back and forth both ways
+          // (there's no easy way to prevent this), but it shouldn't keep
+          // bouncing back and forth indefinitely since no the second signal
+          // causes no additional scrolling
+          TogetherJS.send({type: "codeInputScroll",
+                           scrollTop: pyInputGetScrollTop()});
+        });
+      }
+    });
+    */
+  }
+
+
+  // first initialize options from HTML LocalStorage. very important
+  // that this code runs first so that options get overridden by query
+  // string options and anything else the user wants to override with.
+  if (supports_html5_storage()) {
+    var lsKeys = ['cumulative',
+                  'heapPrimitives',
+                  'py',
+                  'textReferences'];
+    // restore toggleState if available
+    var lsOptions = {};
+    $.each(lsKeys, function(i, k) {
+      var v = localStorage.getItem(k);
+      if (v) {
+        lsOptions[k] = v;
+      }
+    });
+    setToggleOptions(lsOptions);
+
+    // store in localStorage whenever user explicitly changes any toggle option:
+    $('#cumulativeModeSelector,#heapPrimitivesSelector,#textualMemoryLabelsSelector,#pythonVersionSelector').change(function() {
+      var ts = getToggleState();
+      $.each(ts, function(k, v) {
+        localStorage.setItem(k, v);
+      });
+    });
+
+    // generate a unique UUID per "user" (as indicated by a single browser
+    // instance on a user's machine, which can be more precise than IP
+    // addresses due to sharing of IP addresses within, say, a school
+    // computer lab)
+    // added on 2015-01-27 for more precise user identification
+    if (!localStorage.getItem('opt_uuid')) {
+      localStorage.setItem('opt_uuid', generateUUID());
+    }
+  }
+
+  parseQueryString();
+
+  $(window).resize(redrawConnectors);
+
+  $('#genUrlBtn').bind('click', function() {
+    var myArgs = getAppState();
+    var urlStr = $.param.fragment(window.location.href, myArgs, 2 /* clobber all */);
+    urlStr = urlStr.replace(/\)/g, '%29') // replace ) with %29 so that links embed well in Markdown
+    $('#urlOutput').val(urlStr);
+  });
+
+
+  // register a generic AJAX error handler
+  $(document).ajaxError(function(evt, jqxhr, settings, exception) {
+    // ignore errors related to togetherjs stuff:
+    if (settings.url.indexOf('togetherjs') > -1) {
+      return; // get out early
+    }
+
+    // ugh other idiosyncratic stuff
+    if (settings.url.indexOf('name_lookup.py') > -1) {
+      return; // get out early
+    }
+
+    if (settings.url.indexOf('syntax_err_survey.py') > -1) {
+      return; // get out early
+    }
+
+    if (settings.url.indexOf('viz_interaction.py') > -1) {
+      return; // get out early
+    }
+
+    /*
+      This jqxhr.responseText might be indicative of the URL being too
+      long, since the error message returned by the server is something
+      like this in nginx:
+
+<html>
+<head><title>414 Request-URI Too Large</title></head>
+<body bgcolor="white">
+<center><h1>414 Request-URI Too Large</h1></center>
+<hr><center>nginx</center>
+</body>
+</html>
+
+      Note that you'll probably need to customize this check for your server. */
+    if (jqxhr && jqxhr.responseText.indexOf('414') >= 0) {
+
+      // ok this is an UBER UBER hack. If this happens just once, then
+      // force click the "Visualize Execution" button again and re-try.
+      // why? what's the difference the second time around? the diffs_json
+      // parameter (derived from deltaObj) will be *empty* the second time
+      // around since it gets reset on every execution. if diffs_json is
+      // HUGE, then that might force the URL to be too big without your
+      // code necessarily being too big, so give it a second shot with an
+      // empty diffs_json. if it STILL fails, then display the error
+      // message and give up.
+      if (num414Tries === 0) {
+        num414Tries++;
+        $("#executeBtn").click();
+      } else {
+        num414Tries = 0;
+        setFronendError(["Server error! Your code might be too long for this tool. Shorten your code and re-try."]);
+      }
+    } else {
+      setFronendError(["Server error! Your code might be taking too much time to run or using too much memory.",
+                       "Report a bug to philip@pgbovine.net by clicking the 'Generate permanent link' button",
+                       "at the bottom of this page and including a URL in your email."]);
+    }
+
+    doneExecutingCode();
+  });
+
+  clearFrontendError();
+
+  $("#embedLinkDiv").hide();
+  $("#executeBtn").attr('disabled', false);
+  $("#executeBtn").click(executeCodeFromScratch);
+
+  // for Versions 1 and 2, initialize here. But for version 3+, dynamically
+  // generate a survey whenever the user successfully executes a piece of code
+  //initializeDisplayModeSurvey();
+
+  // when you leave or reload the page, submit an updateHistoryJSON if you
+  // have one. beforeunload seems to work better than unload(), but it's
+  // still a bit flaky ... TODO: investigate :(
+  $(window).on('beforeunload', function(){
+    submitUpdateHistory('beforeunload');
+    return null; // so that no dialog is triggered
+  });
+
+  // just do this as well, even though it might be hella redundant
+  $(window).unload(function(){
+    submitUpdateHistory('unload');
+    return null; // so that no dialog is triggered
+  });
+
+  // periodically do submitUpdateHistory() to handle the case when
+  // someone is simply idle on the page without reloading it or
+  // re-editing code; that way, we can still get some signals rather
+  // than nothing.
+  var lastSubmittedUpdateHistoryLength = 0;
+  setInterval(function() {
+    if (myVisualizer) {
+      var uh = myVisualizer.updateHistory;
+      // don't submit identical entries repeatedly since that's redundant
+      if (uh.length != lastSubmittedUpdateHistoryLength) {
+        lastSubmittedUpdateHistoryLength = uh.length;
+        submitUpdateHistory('periodic');
+      }
+    }
+  }, 1000 * 60);
+}
+
+
+// sets globals such as rawInputLst, code input box, and toggle options
+function parseQueryString() {
+  var queryStrOptions = getQueryStringOptions();
+  setToggleOptions(queryStrOptions);
+  if (queryStrOptions.preseededCode) {
+    pyInputSetValue(queryStrOptions.preseededCode);
+  }
+  if (queryStrOptions.rawInputLst) {
+    rawInputLst = queryStrOptions.rawInputLst; // global
+  }
+  else {
+    rawInputLst = [];
+  }
+
+  if (queryStrOptions.testCasesLst) {
+    $("#createTestsLink").hide();
+    initTestcasesPane('#testCasesPane');
+    queryStrOptions.testCasesLst.forEach(function(e) {
+      addTestcase(e);
+    });
+  }
+
+  // ugh tricky -- always start in edit mode by default, and then
+  // switch to display mode only after the code successfully executes
+  appMode = 'edit';
+  if ((queryStrOptions.appMode == 'display' ||
+       queryStrOptions.appMode == 'visualize' /* 'visualize' is deprecated */) &&
+      queryStrOptions.preseededCode /* jump to display only with pre-seeded code */) {
+    executeCode(queryStrOptions.preseededCurInstr); // will switch to 'display' mode
+  }
+  $.bbq.removeState(); // clean up the URL no matter what
+}
+
+// parsing the URL query string hash
+function getQueryStringOptions() {
+  var ril = $.bbq.getState('rawInputLstJSON');
+  var testCasesLstJSON = $.bbq.getState('testCasesJSON');
+  // note that any of these can be 'undefined'
+  return {preseededCode: $.bbq.getState('code'),
+          preseededCurInstr: Number($.bbq.getState('curInstr')),
+          verticalStack: $.bbq.getState('verticalStack'),
+          appMode: $.bbq.getState('mode'),
+          py: $.bbq.getState('py'),
+          cumulative: $.bbq.getState('cumulative'),
+          heapPrimitives: $.bbq.getState('heapPrimitives'),
+          textReferences: $.bbq.getState('textReferences'),
+          rawInputLst: ril ? $.parseJSON(ril) : undefined,
+          testCasesLst: testCasesLstJSON ? $.parseJSON(testCasesLstJSON) : undefined
+          };
+}
+
+function setToggleOptions(dat) {
+  // ugh, ugly tristate due to the possibility of each being undefined
+  if (dat.py !== undefined) {
+    $('#pythonVersionSelector').val(dat.py);
+  }
+  if (dat.cumulative !== undefined) {
+    $('#cumulativeModeSelector').val(dat.cumulative);
+  }
+  if (dat.heapPrimitives !== undefined) {
+    $('#heapPrimitivesSelector').val(dat.heapPrimitives);
+  }
+  if (dat.textReferences !== undefined) {
+    $('#textualMemoryLabelsSelector').val(dat.textReferences);
+  }
+}
+
+// get the ENTIRE current state of the app
+function getAppState() {
+  assert(originFrontendJsFile); // global var defined in each frontend
+
+  var ret = {code: pyInputGetValue(),
+             mode: appMode,
+             origin: originFrontendJsFile,
+             cumulative: $('#cumulativeModeSelector').val(),
+             heapPrimitives: $('#heapPrimitivesSelector').val(),
+             textReferences: $('#textualMemoryLabelsSelector').val(),
+             py: $('#pythonVersionSelector').val(),
+             /* ALWAYS JSON serialize rawInputLst, even if it's empty! */
+             rawInputLstJSON: JSON.stringify(rawInputLst),
+             curInstr: myVisualizer ? myVisualizer.curInstr : undefined};
+
+  // keep this really clean by avoiding undefined values
+  if (ret.cumulative === undefined)
+    delete ret.cumulative;
+  if (ret.heapPrimitives === undefined)
+    delete ret.heapPrimitives;
+  if (ret.textReferences === undefined)
+    delete ret.textReferences;
+  if (ret.py === undefined)
+    delete ret.py;
+  if (ret.rawInputLstJSON === undefined)
+    delete ret.rawInputLstJSON;
+  if (ret.curInstr === undefined)
+    delete ret.curInstr;
+
+  // different frontends can optionally AUGMENT the app state with
+  // custom fields
+  if (typeof(appStateAugmenter) !== 'undefined') {
+    appStateAugmenter(ret);
+  }
+  return ret;
+}
+
+// return whether two states match, except don't worry about curInstr
+function appStateEq(s1, s2) {
+  assert(s1.origin == s2.origin); // sanity check!
+
+  return (s1.code == s2.code &&
+          s1.mode == s2.mode &&
+          s1.cumulative == s2.cumulative &&
+          s1.heapPrimitives == s1.heapPrimitives &&
+          s1.textReferences == s2.textReferences &&
+          s1.py == s2.py &&
+          s1.rawInputLstJSON == s2.rawInputLstJSON);
+}
+
+// strip it down to the bare minimum
+function getToggleState() {
+  var x = getAppState();
+  delete x.code;
+  delete x.mode;
+  delete x.rawInputLstJSON;
+  delete x.curInstr;
+  return x;
+}
+
+// sets the global appMode variable if relevant and also the URL hash to
+// support some amount of Web browser back button goodness
+function updateAppDisplay(newAppMode) {
+  // idempotence is VERY important here
+  if (newAppMode == appMode) {
+    return;
+  }
+
+  appMode = newAppMode; // global!
+
+  if (appMode === undefined || appMode == 'edit' ||
+      !myVisualizer /* subtle -- if no visualizer, default to edit mode */) {
+    appMode = 'edit'; // canonicalize
+
+    $("#pyInputPane").show();
+    $("#pyOutputPane").hide();
+    $("#embedLinkDiv").hide();
+
+    $(".surveyQ").val(''); // clear all survey results when user hits forward/back
+
+    // destroy all annotation bubbles (NB: kludgy)
+    if (myVisualizer) {
+      myVisualizer.destroyAllAnnotationBubbles();
+    }
+
+    // Potentially controversial: when you enter edit mode, DESTROY any
+    // existing visualizer object. note that this simplifies the app's
+    // conceptual model but breaks the browser's expected Forward and
+    // Back button flow
+    $("#pyOutputPane").empty();
+    // right before destroying, submit the visualizer's updateHistory
+    submitUpdateHistory('editMode');
+    myVisualizer = null;
+
+    $(document).scrollTop(0); // scroll to top to make UX better on small monitors
+
+    $.bbq.pushState({ mode: 'edit' }, 2 /* completely override other hash strings to keep URL clean */);
+  }
+  else if (appMode == 'display' || appMode == 'visualize' /* 'visualize' is deprecated */) {
+    assert(myVisualizer);
+    appMode = 'display'; // canonicalize
+
+    $("#pyInputPane").hide();
+    $("#pyOutputPane").show();
+    $("#embedLinkDiv").show();
+
+    if (typeof TogetherJS === 'undefined' || !TogetherJS.running) {
+      $("#surveyHeader").show();
+    }
+
+    doneExecutingCode();
+
+    // do this AFTER making #pyOutputPane visible, or else
+    // jsPlumb connectors won't render properly
+    myVisualizer.updateOutput();
+
+    // customize edit button click functionality AFTER rendering (NB: awkward!)
+    $('#pyOutputPane #editCodeLinkDiv').show();
+    $('#pyOutputPane #editBtn').click(function() {
+      enterEditMode();
+    });
+
+    $(document).scrollTop(0); // scroll to top to make UX better on small monitors
+
+
+    // NASTY global :(
+    if (pendingCodeOutputScrollTop) {
+      myVisualizer.domRoot.find('#pyCodeOutputDiv').scrollTop(pendingCodeOutputScrollTop);
+      pendingCodeOutputScrollTop = null;
+    }
+
+    $.doTimeout('pyCodeOutputDivScroll'); // cancel any prior scheduled calls
+
+    // TODO: this might interfere with experimentalPopUpSyntaxErrorSurvey (2015-04-19)
+    myVisualizer.domRoot.find('#pyCodeOutputDiv').scroll(function(e) {
+      var elt = $(this);
+      // debounce
+      $.doTimeout('pyCodeOutputDivScroll', 100, function() {
+        // note that this will send a signal back and forth both ways
+        if (typeof TogetherJS !== 'undefined' && TogetherJS.running) {
+          // (there's no easy way to prevent this), but it shouldn't keep
+          // bouncing back and forth indefinitely since no the second signal
+          // causes no additional scrolling
+          TogetherJS.send({type: "pyCodeOutputDivScroll",
+                           scrollTop: elt.scrollTop()});
+        }
+      });
+    });
+
+    $.bbq.pushState({ mode: 'display' }, 2 /* completely override other hash strings to keep URL clean */);
+  }
+  else {
+    assert(false);
+  }
+
+  $('#urlOutput,#embedCodeOutput').val(''); // clear to avoid stale values
+
+  // log at the end after appMode gets canonicalized
+  logEvent({type: 'updateAppDisplay', mode: appMode, appState: getAppState()});
+}
+
+
+function executeCodeFromScratch() {
+  // don't execute empty string:
+  if ($.trim(pyInputGetValue()) == '') {
+    setFronendError(["Type in some code to visualize."]);
+    return;
+  }
+
+  rawInputLst = []; // reset!
+  executeCode();
+}
+
+function executeCodeWithRawInput(rawInputStr, curInstr) {
+  rawInputLst.push(rawInputStr);
+  console.log('executeCodeWithRawInput', rawInputStr, curInstr, rawInputLst);
+  executeCode(curInstr);
+}
+
+
+function handleUncaughtExceptionFunc(trace) {
+  if (trace.length == 1 && trace[0].line) {
+    var errorLineNo = trace[0].line - 1; /* CodeMirror lines are zero-indexed */
+    if (errorLineNo !== undefined && errorLineNo != NaN) {
+      // highlight the faulting line
+      if (useCodeMirror) {
+        pyInputCodeMirror.focus();
+        pyInputCodeMirror.setCursor(errorLineNo, 0);
+        pyInputCodeMirror.addLineClass(errorLineNo, null, 'errorLine');
+
+        function f() {
+          pyInputCodeMirror.removeLineClass(errorLineNo, null, 'errorLine'); // reset line back to normal
+          pyInputCodeMirror.off('change', f);
+        }
+        pyInputCodeMirror.on('change', f);
+      }
+      else {
+        var s = pyInputAceEditor.getSession();
+        s.setAnnotations([{row: errorLineNo,
+                           type: 'error',
+                           text: trace[0].exception_msg}]);
+        pyInputAceEditor.gotoLine(errorLineNo + 1 /* one-indexed */);
+        // if we have both a line and column number, then move over to
+        // that column. (going to the line first prevents weird
+        // highlighting bugs)
+        if (trace[0].col !== undefined) {
+          pyInputAceEditor.moveCursorTo(errorLineNo, trace[0].col);
+        }
+        pyInputAceEditor.focus();
+      }
+    }
+  }
+}
+
+function startExecutingCode() {
+  $('#executeBtn').html("Please wait ... executing (takes up to 10 seconds)");
+  $('#executeBtn').attr('disabled', true);
+  isExecutingCode = true; // nasty global
+}
+
+function doneExecutingCode() {
+  $('#executeBtn').html("Visualize Execution");
+  $('#executeBtn').attr('disabled', false);
+  isExecutingCode = false; // nasty global
+}
+
+
+function enterDisplayMode() {
+  updateAppDisplay('display');
+}
+
+function enterEditMode() {
+  updateAppDisplay('edit');
+}
+
+
+function optFinishSuccessfulExecution() {
+  enterDisplayMode(); // do this first!
+
+  // 2014-05-25: implemented more detailed tracing for surveys
+  myVisualizer.creationTime = new Date().getTime();
+  // each element will be a two-element list consisting of:
+  // [step number, timestamp]
+  // (debounce entries that are less than 1 second apart to
+  // compress the logs a bit when there's rapid scrubbing or scrolling)
+  //
+  // the first entry has a THIRD field:
+  // [step number, timestamp, total # steps]
+  //
+  // subsequent entries don't need it since it will always be the same.
+  // the invariant is that step number < total # steps (since it's
+  // zero-indexed
+  myVisualizer.updateHistory = [];
+  myVisualizer.updateHistory.push([myVisualizer.curInstr,
+                                   myVisualizer.creationTime,
+                                   myVisualizer.curTrace.length]);
+  //console.log(JSON.stringify(myVisualizer.updateHistory));
+
+  // For version 3+, dynamically generate a survey whenever the user
+  // successfully executes a piece of code
+  initializeDisplayModeSurvey();
+
+  if (typeof(activateSyntaxErrorSurvey) !== 'undefined' &&
+      activateSyntaxErrorSurvey &&
+      experimentalPopUpSyntaxErrorSurvey) {
+    experimentalPopUpSyntaxErrorSurvey();
+  }
+}
+
+
+// TODO: cut reliance on the nasty rawInputLst global
+function executeCodeAndCreateViz(codeToExec,
+                                 backendScript, backendOptionsObj,
+                                 frontendOptionsObj,
+                                 outputDiv,
+                                 handleSuccessFunc, handleUncaughtExceptionFunc) {
+
+    function execCallback(dataFromBackend) {
+      var trace = dataFromBackend.trace;
+
+      var killerException = null;
+
+      // don't enter visualize mode if there are killer errors:
+      if (!trace ||
+          (trace.length == 0) ||
+          (trace[trace.length - 1].event == 'uncaught_exception')) {
+
+        handleUncaughtExceptionFunc(trace);
+
+        if (trace.length == 1) {
+          killerException = trace[0]; // killer!
+          setFronendError([trace[0].exception_msg]);
+        }
+        else if (trace[trace.length - 1].exception_msg) {
+          killerException = trace[trace.length - 1]; // killer!
+          setFronendError([trace[trace.length - 1].exception_msg]);
+        }
+        else {
+          setFronendError(["Unknown error. Reload the page and try again.",
+                           "Report a bug to philip@pgbovine.net by clicking on the 'Generate URL'",
+                           "button at the bottom and including a URL in your email."]);
+        }
+      }
+      else {
+        // fail-soft to prevent running off of the end of trace
+        if (frontendOptionsObj.startingInstruction >= trace.length) {
+          frontendOptionsObj.startingInstruction = 0;
+        }
+
+        if (frontendOptionsObj.runTestCaseCallback) {
+          // hacky! DO NOT actually create a visualization! instead call:
+          frontendOptionsObj.runTestCaseCallback(trace);
+        } else if (frontendOptionsObj.holisticMode) {
+          // do NOT override, or else bad things will happen with
+          // jsPlumb arrows interfering ...
+          delete frontendOptionsObj.visualizerIdOverride;
+
+          myVisualizer = new HolisticVisualizer(outputDiv, dataFromBackend, frontendOptionsObj);
+        } else {
+          myVisualizer = new ExecutionVisualizer(outputDiv, dataFromBackend, frontendOptionsObj);
+
+          myVisualizer.add_pytutor_hook("end_updateOutput", function(args) {
+            if (updateOutputSignalFromRemote) {
+              return;
+            }
+            if (typeof TogetherJS !== 'undefined' && TogetherJS.running && !isExecutingCode) {
+              TogetherJS.send({type: "updateOutput", step: args.myViz.curInstr});
+            }
+
+            // debounce to compress a bit ... 250ms feels "right"
+            $.doTimeout('updateOutputLogEvent', 250, function() {
+              var obj = {type: 'updateOutput', step: args.myViz.curInstr,
+                         curline: args.myViz.curLineNumber,
+                         prevline: args.myViz.prevLineNumber};
+              // optional fields
+              if (args.myViz.curLineExceptionMsg) {
+                obj.exception = args.myViz.curLineExceptionMsg;
+              }
+              if (args.myViz.curLineIsReturn) {
+                obj.curLineIsReturn = true;
+              }
+              if (args.myViz.prevLineIsReturn) {
+                obj.prevLineIsReturn = true;
+              }
+              logEvent(obj);
+            });
+
+            // 2014-05-25: implemented more detailed tracing for surveys
+            if (args.myViz.creationTime) {
+              var curTs = new Date().getTime();
+
+              var uh = args.myViz.updateHistory;
+              assert(uh.length > 0); // should already be seeded with an initial value
+              var lastTs = uh[uh.length - 1][1];
+
+              // (debounce entries that are less than 1 second apart to
+              // compress the logs a bit when there's rapid scrubbing or scrolling)
+              if ((curTs - lastTs) < 1000) {
+                uh.pop(); // get rid of last entry before pushing a new entry
+              }
+              uh.push([args.myViz.curInstr, curTs]);
+              //console.log(JSON.stringify(uh));
+            }
+            return [false]; // pass through to let other hooks keep handling
+          });
+        }
+        // SUPER HACK -- slip in backendOptionsObj as an extra field
+        if (myVisualizer) {
+          myVisualizer.backendOptionsObj = backendOptionsObj;
+        }
+
+        handleSuccessFunc();
+
+        // VERY SUBTLE -- reinitialize TogetherJS so that it can detect
+        // and sync any new elements that are now inside myVisualizer
+        if (typeof TogetherJS !== 'undefined' && TogetherJS.running) {
+          TogetherJS.reinitialize();
+        }
+      }
+
+      doneExecutingCode(); // rain or shine, we're done executing!
+      // run this at the VERY END after all the dust has settled
+
+      // do logging at the VERY END after the dust settles ...
+      // and don't do it for iframe-embed.js since getAppState doesn't
+      // work in that case ...
+      if (originFrontendJsFile !== 'iframe-embed.js') {
+        logEvent({type: 'doneExecutingCode',
+                  appState: getAppState(),
+                  // enough to reconstruct the ExecutionVisualizer object
+                  backendDataJSON: JSON.stringify(dataFromBackend), // for easier transport and compression
+                  frontendOptionsObj: frontendOptionsObj,
+                  backendOptionsObj: backendOptionsObj,
+                  killerException: killerException, // if there's, say, a syntax error
+                  });
+      }
+
+      if (killerException) {
+        var excObj = {killerException: killerException, myAppState: getAppState()};
+        prevExecutionExceptionObjLst.push(excObj);
+      } else {
+        prevExecutionExceptionObjLst = []; // reset!!!
+      }
+
+      // tricky hacky reset
+      num414Tries = 0;
+    }
+
+    if (!backendScript) {
+      setFronendError(["Server configuration error: No backend script",
+                       "Report a bug to philip@pgbovine.net by clicking on the 'Generate URL'",
+                       "button at the bottom and including a URL in your email."]);
+      return;
+    }
+
+    if (typeof TogetherJS !== 'undefined' &&
+        TogetherJS.running && !executeCodeSignalFromRemote) {
+      TogetherJS.send({type: "executeCode",
+                       myAppState: getAppState(),
+                       forceStartingInstr: frontendOptionsObj.startingInstruction,
+                       rawInputLst: rawInputLst});
+    }
+
+    snapshotCodeDiff(); // do ONE MORE snapshot before we execute, or else
+                        // we'll miss a diff if the user hits Visualize Execution
+                        // very shortly after finishing coding
+    if (deltaObj) {
+      deltaObj.executeTime = new Date().getTime();
+    }
+
+    // if you're in display mode, kick back into edit mode before
+    // executing or else the display might not refresh properly ... ugh
+    // krufty FIXME
+    enterEditMode();
+
+    clearFrontendError();
+    startExecutingCode();
+
+    jsonp_endpoint = null;
+
+    // hacky!
+    if (backendScript === python2_backend_script) {
+      frontendOptionsObj.lang = 'py2';
+    } else if (backendScript === python3_backend_script) {
+      frontendOptionsObj.lang = 'py3';
+    } else if (backendScript === js_backend_script) {
+      frontendOptionsObj.lang = 'js';
+      jsonp_endpoint = JS_JSONP_ENDPOINT;
+    } else if (backendScript === ts_backend_script) {
+      frontendOptionsObj.lang = 'ts';
+      jsonp_endpoint = TS_JSONP_ENDPOINT;
+    } else if (backendScript === ruby_backend_script) {
+      frontendOptionsObj.lang = 'ruby';
+      jsonp_endpoint = RUBY_JSONP_ENDPOINT;
+    } else if (backendScript === java_backend_script) {
+      frontendOptionsObj.lang = 'java';
+      frontendOptionsObj.disableHeapNesting = true; // never nest Java objects, seems like a good default
+      jsonp_endpoint = JAVA_JSONP_ENDPOINT;
+    }
+
+    if (backendScript === js_backend_script ||
+        backendScript === ts_backend_script ||
+        backendScript === java_backend_script ||
+        backendScript === ruby_backend_script) {
+      // hack! should just be a dummy script for logging only
+      $.get(backendScript,
+            {user_script : codeToExec,
+             options_json: JSON.stringify(backendOptionsObj),
+             user_uuid: supports_html5_storage() ? localStorage.getItem('opt_uuid') : undefined,
+             session_uuid: sessionUUID,
+             // if we don't have any deltas, then don't bother sending deltaObj:
+             diffs_json: deltaObj && (deltaObj.deltas.length > 0) ? JSON.stringify(deltaObj) : null},
+             function(dat) {} /* don't do anything since this is a dummy call */, "text");
+
+      // the REAL call uses JSONP
+      // http://learn.jquery.com/ajax/working-with-jsonp/
+      assert(jsonp_endpoint);
+      $.ajax({
+        url: jsonp_endpoint,
+        // The name of the callback parameter, as specified by the YQL service
+        jsonp: "callback",
+        dataType: "jsonp",
+        data: {user_script : codeToExec,
+               options_json: JSON.stringify(backendOptionsObj)},
+        success: execCallback,
+      });
+    } else {
+      // Python 2 or 3
+      $.get(backendScript,
+            {user_script : codeToExec,
+             raw_input_json: rawInputLst.length > 0 ? JSON.stringify(rawInputLst) : '',
+             options_json: JSON.stringify(backendOptionsObj),
+             user_uuid: supports_html5_storage() ? localStorage.getItem('opt_uuid') : undefined,
+             session_uuid: sessionUUID,
+             // if we don't have any deltas, then don't bother sending deltaObj:
+             diffs_json: deltaObj && (deltaObj.deltas.length > 0) ? JSON.stringify(deltaObj) : null},
+             execCallback, "json");
+    }
+
+    initDeltaObj(); // clear deltaObj to start counting over again
+}
+
+
+// this feature was deployed on 2015-09-17, so check logs for
+// viz_interaction.py
+function submitUpdateHistory(why) {
+  if (myVisualizer) {
+    // Compress updateHistory before encoding and sending to
+    // the server so that it takes up less room in the URL. Have each
+    // entry except for the first be a delta from the FIRST entry.
+    var uh = myVisualizer.updateHistory;
+    var encodedUh = [];
+    encodedUh.push(uh[0]);
+
+    var firstTs = uh[0][1];
+    for (var i = 1; i < uh.length; i++) {
+      var e = uh[i];
+      encodedUh.push([e[0], e[1] - firstTs]);
+    }
+
+    // finally push a final entry with the current timestamp delta
+    var curTs = new Date().getTime();
+    encodedUh.push([myVisualizer.curInstr, curTs - firstTs]);
+
+    var uhJSON = JSON.stringify(uh);
+    var encodedUhJSON = JSON.stringify(encodedUh);
+
+    //console.log(uhJSON);
+    //console.log(encodedUhJSON);
+
+    //console.log(uhJSON.length);
+    //console.log(encodedUhJSON.length);
+
+    var myArgs = {session_uuid: sessionUUID,
+                  updateHistoryJSON: encodedUhJSON};
+    if (why) {
+      myArgs.why = why;
+    }
+    $.get('viz_interaction.py', myArgs, function(dat) {});
+  }
+}
+
+
+/* For survey questions:
+
+Versions of survey wording:
+
+v1: (deployed around 2014-04-09, revoked on 2014-06-20)
+
+var survey_v1 = '\n\
+<p style="margin-top: 10px; line-height: 175%;">\n\
+[Optional] Please answer these questions to support our research and to help improve this tool.<br/>\n\
+Where is your code from? <input type="text" id="code-origin-Q" class="surveyQ" size=60 maxlength=140/><br/>\n\
+What do you hope to learn by visualizing it? <input type="text" id="what-learn-Q" class="surveyQ" size=55 maxlength=140/><br/>\n\
+How did you find this web site? <input type="text" id="how-find-Q" class="surveyQ" size=60 maxlength=140/>\n\
+<input type="hidden" id="Q-version" value="v1"/> <!-- for versioning -->\n\
+</p>'
+
+v2: (deployed on 2014-06-20, revoked on 2014-06-28)
+
+var survey_v2 = '\n\
+<p style="margin-top: 10px; line-height: 175%;">\n\
+[Optional] Please answer these questions to support our research and to help improve this tool.<br/>\n\
+What do you hope to learn by visualizing this code? <input type="text" id="what-learn-Q" class="surveyQ" size=60 maxlength=200/><br/>\n\
+Paste a website link to a course that uses Python: <input type="text" id="course-website-Q" class="surveyQ" size=55 maxlength=300/><br/>\n\
+<span style="font-size: 8pt; color: #666;">(This could be a course that you\'re taking or teaching in school, or that you\'ve taken or taught in the past.)</span>\n\
+<input type="hidden" id="Q-version" value="v2"/> <!-- for versioning -->\n\
+</p>'
+
+v3: (deployed on 2014-06-28, revoked on 2014-07-13) [it's a simplified version of v1]
+var survey_v3 = '\n\
+<p style="margin-top: 10px; line-height: 175%;">\n\
+[Optional] Please answer these questions to support our research and to help improve this tool.<br/>\n\
+Where is your code from? <input type="text" id="code-origin-Q" class="surveyQ" size=60 maxlength=140/><br/>\n\
+What do you hope to learn by visualizing it? <input type="text" id="what-learn-Q" class="surveyQ" size=55 maxlength=140/><br/>\n\
+<input type="hidden" id="Q-version" value="v3"/> <!-- for versioning -->\n\
+</p>'
+
+v4: (deployed on 2014-07-13, revoked on 2015-03-01)
+[an even more simplified version of v1 just to focus on ONE important question]
+var survey_v4 = '\n\
+<p style="margin-top: 10px; line-height: 175%;">\n\
+[Optional] What do you hope to learn by visualizing this code?<br/>\n\
+<input type="text" id="what-learn-Q" class="surveyQ" size=80 maxlength=300/><br/>\n\
+<input type="hidden" id="Q-version" value="v4"/> <!-- for versioning -->\n\
+</p>'
+
+v5: (deployed on 2015-03-01, retired on 2015-08-31) - target older population
+var survey_v5 = '\n\
+<p style="margin-top: 10px; line-height: 175%;">\n\
+If you are <span style="color: #333; font-weight: bold;">at least 60 years old</span> and would like to help our research on how older people learn programming, please enter your email address here:\n\
+<input type="text" id="email-addr-Q" class="surveyQ" size=30 maxlength=300/><br/>\n\
+<input type="hidden" id="Q-version" value="v5"/> <!-- for versioning -->\n\
+</p>'
+
+v6: (deployed on 2015-08-31) - use Google Forms links
+*/
+var survey_v6 = '\n\
+<p style="font-size: 9pt; margin-top: 10px; line-height: 175%;">\n\
+Please support our research and keep this tool free by <b><a href="https://docs.google.com/forms/d/1-aKilu0PECHZVRSIXHv8vJpEuKUO9uG3MrH864uX56U/viewform" target="_blank">filling out this short survey</a></b>.<br/>\n\
+If you are at least 60 years old, please also <a href="https://docs.google.com/forms/d/1lrXsE04ghfX9wNzTVwm1Wc6gQ5I-B4uw91ACrbDhJs8/viewform" target="_blank">fill out this survey</a>.</p>'
+
+var survey_html = survey_v6;
+
+function setSurveyHTML() {
+  $('#surveyPane').html(survey_html);
+}
+
+function getSurveyObject() {
+  /* v1
+  var code_origin_Q_val = $('#code-origin-Q').val();
+  var what_learn_Q_val = $('#what-learn-Q').val();
+  var how_find_Q_val = $('#how-find-Q').val();
+
+  var ret = null;
+
+  if (code_origin_Q_val || what_learn_Q_val || how_find_Q_val) {
+    ret = {
+      ver: $('#Q-version').val(),
+      code_origin_Q: code_origin_Q_val,
+      what_learn_Q: what_learn_Q_val,
+      how_find_Q: how_find_Q_val,
+    }
+  }
+  */
+
+  /* v2
+  var what_learn_Q_val = $('#what-learn-Q').val();
+  var course_website_Q_val = $('#course-website-Q').val();
+
+  var ret = null;
+
+  if (what_learn_Q_val || course_website_Q_val) {
+    ret = {
+      ver: $('#Q-version').val(),
+      what_learn_Q: what_learn_Q_val,
+      course_website_Q: course_website_Q_val,
+    }
+  }
+  */
+
+  /* v3
+  var code_origin_Q_val = $('#code-origin-Q').val();
+  var what_learn_Q_val = $('#what-learn-Q').val();
+
+  var ret = null;
+
+  if (code_origin_Q_val || what_learn_Q_val) {
+    ret = {
+      ver: $('#Q-version').val(),
+      code_origin_Q: code_origin_Q_val,
+      what_learn_Q: what_learn_Q_val,
+    }
+  }
+  */
+
+  /* v4 */
+  /*
+  var ret = {
+    ver: $('#Q-version').val(),
+  }
+
+  var what_learn_Q_val = $('#what-learn-Q').val();
+  if ($.trim(what_learn_Q_val)) {
+    ret.what_learn_Q = what_learn_Q_val;
+    ret.testing_group = 'c'; // special group for users who have filled out this
+                             // execution-time survey
+  } else {
+    // assign to 'a' or 'b' group for A/B testing:
+    var grp = 'ERROR'; // default error sentinel
+
+    // if we have localStorage, then get/set a testing_group field to ensure
+    // some consistency across different sessions from the same user.
+    // of course, this isn't foolproof by any means, but it's a start
+    if (supports_html5_storage()) {
+      var saved_grp = localStorage.getItem('testing_group');
+      if (saved_grp) {
+        grp = saved_grp;
+      } else {
+        grp = (Math.random() < 0.5) ? 'a' : 'b';
+        localStorage.setItem('testing_group', grp);
+      }
+    } else {
+      grp = (Math.random() < 0.5) ? 'a' : 'b';
+    }
+
+    ret.testing_group = grp;
+  }
+  */
+
+  /* v5
+  var ret = {
+    ver: $('#Q-version').val(),
+  }
+
+  var email_Q_val = $('#email-addr-Q').val();
+  if ($.trim(email_Q_val)) {
+    ret.email_Q_val = email_Q_val;
+  }
+
+  return ret;
+  */
+
+  return null;
+}
+
+
+// survey for shared sessions, deployed on 2014-06-06, taken down on
+// 2015-03-06 due to lack of useful responses
+var postSessionSurvey = '\n\
+<div id="postSessionSurveyDiv" style="border: 1px solid #BE554E; padding: 5px; margin-top: 5px; line-height: 175%;">\n\
+<span style="font-size: 8pt; color: #666;">Support our research by giving anonymous feedback before ending your session.</span><br/>\n\
+How useful was this particular session? (click star to rate)\n\
+<span class="star-rating togetherjsIgnore">\n\
+  <input type="radio" class="togetherjsIgnore" name="rating" value="1"/><i></i>\n\
+  <input type="radio" class="togetherjsIgnore" name="rating" value="2"/><i></i>\n\
+  <input type="radio" class="togetherjsIgnore" name="rating" value="3"/><i></i>\n\
+  <input type="radio" class="togetherjsIgnore" name="rating" value="4"/><i></i>\n\
+  <input type="radio" class="togetherjsIgnore" name="rating" value="5"/><i></i>\n\
+</span>\n\
+<br/>\
+What did you just learn? <input type="text" id="sharedSessionWhatLearned" class="surveyQ togetherjsIgnore" size=60 maxlength=140/>\n\
+<button id="submitSessionSurveyBtn" type="button" style="font-size: 8pt;">Submit</button>\n\
+<span id="sharedSessionWhatLearnedThanks" style="color: #e93f34; font-weight: bold; font-size: 10pt; display: none;">Thanks!</span>\n\
+</div>'
+
+// deployed on 2015-03-06
+var emailNotificationHtml = '<div style="border: 2px solid #BE554E; padding: 5px; margin-top: 15px; margin-bottom: 15px; line-height: 150%; font-size: 10pt; width: 600px;">If you enjoyed using this <em>shared sessions</em> feature, please take a minute to fill out a <a href="https://docs.google.com/forms/d/126ZijTGux_peoDusn1F9C1prkR226897DQ0MTTB5Q4M/viewform" target="_blank"><b>three-question survey</b></a> to help our research. Thank you!</div>'
+
+// display-mode survey, which is shown when the user is in 'display' mode
+// As of Version 3, this runs every time code is executed, so make sure event
+// handlers don't unnecessarily stack up
+function initializeDisplayModeSurvey() {
+  /* Version 1 - started experiment on 2014-04-09, put on hold on 2014-05-02
+
+Hard-coded HTML in surveyHeader:
+
+<div id="surveyHeader" style="margin-bottom: 5pt; display: none;">
+  <div id="vizSurveyLabel" style="font-size: 8pt; color: #666;">
+  Support our research by clicking a button when you see something interesting in the visualization.<br/>
+  </div>
+  <div>
+    <button class="surveyBtn" type="button">Eureka! Now I understand.</button>
+    <button class="surveyBtn" type="button">I learned something new!</button>
+    <button class="surveyBtn" type="button">I found the bug in my code!</button>
+    <button class="surveyBtn" type="button">This looks confusing.</button>
+    <button class="surveyBtn" type="button">I have another comment.</button>
+  </div>
+</div>
+
+[when any button is clicked a pop-up modal prompt tells the user to type
+in some details elaborating on what they just clicked]
+
+  $('.surveyBtn').click(function(e) {
+    // wow, massive copy-and-paste action from above!
+    var myArgs = getAppState();
+
+    var buttonPrompt = $(this).html();
+    var res = prompt('"' + buttonPrompt + '"' + '\nPlease elaborate if you can and hit OK to submit:');
+    // don't do ajax call when Cancel button is pressed
+    // (note that if OK button is pressed with no response, then an
+    // empty string will still be sent to the server
+    if (res !== null) {
+      myArgs.surveyQuestion = buttonPrompt;
+      myArgs.surveyResponse = res;
+      $.get('survey.py', myArgs, function(dat) {});
+    }
+  });
+
+  */
+
+  /* Version 2 - greatly simplified and deployed on 2014-05-24, revoked on 2014-07-13
+
+Hard-coded HTML in surveyHeader:
+
+<div id="surveyHeader" style="display: none;">
+  <div id="vizSurveyLabel" style="font-size: 8pt; color: #666; margin-bottom: 5pt;">
+    <!-- 2014-06-04 tagline -->
+    Support our research and help future learners by describing what you are learning.
+
+    <!-- 2014-05-28 tagline
+    Help future learners by describing what you just learned.
+    -->
+
+    <!-- 2014-05-25 tagline
+    Help future learners by writing about what you are learning.
+    Submit as often as you like!
+    -->
+
+    <!-- 2014-05-24 original tagline
+    Help future learners by filling in this blank whenever you learn
+    something new from the visualization:
+     -->
+  </div>
+  <div style="font-size: 10pt; margin-bottom: 5pt; padding: 1pt;">
+    <!-- this phrasing retired on 2014-06-04: "I just learned that" -->
+    What did you just learn?
+    <input style="font-size: 10pt; padding: 1pt;" type="text" id="iJustLearnedInput" size="60" maxlength=300/>
+
+    <button id="iJustLearnedSubmission" type="button" style="font-size: 10pt;">Submit</button>
+
+    <span id="iJustLearnedThanks"
+          style="color: #e93f34; font-weight: bold; font-size: 11pt; display: none;">
+      Thanks!
+    </span>
+  </div>
+</div>
+
+[when the user clicks the "Submit" button, send results to survey.py and
+display a brief "Thanks!" note]
+
+  $('#iJustLearnedSubmission').click(function(e) {
+    var resp = $("#iJustLearnedInput").val();
+
+    if (!$.trim(resp)) {
+      return;
+    }
+
+    // wow, massive copy-and-paste action from above!
+    var myArgs = getAppState();
+
+    // myArgs.surveyQuestion = "I just learned that ..."; // retired on 2014-06-04
+    myArgs.surveyQuestion = "What did you just learn?";
+    myArgs.surveyResponse = resp;
+    myArgs.surveyVersion = 'v2';
+
+    // 2014-05-25: implemented more detailed tracing for surveys
+    if (myVisualizer) {
+      myArgs.updateHistoryJSON = JSON.stringify(myVisualizer.updateHistory);
+    }
+
+    $.get('survey.py', myArgs, function(dat) {});
+
+    $("#iJustLearnedInput").val('');
+    $("#iJustLearnedThanks").show();
+    $.doTimeout('iJustLearnedThanksFadeOut', 1200, function() {
+      $("#iJustLearnedThanks").fadeOut(1000);
+    });
+  });
+
+  */
+
+  /* Version 3 - deployed on 2014-07-13, revoked on 2015-03-01 (revoked
+     along with v4 of the "Visualize Execution" survey)
+
+  Display one of 3 display-mode surveys, depending on the contents of
+  myVisualizer.backendOptionsObj.survey.testing_group
+
+  'a' / 'b' -- A/B testing of two kinds of surveys
+
+  'c' -- if the user has filled in an answer to 'What do you hope to
+  learn by visualizing this code?' when hitting "Visualize Execution",
+  then echo that phrase back to them and display a custom survey
+
+  if (!myVisualizer || !myVisualizer.backendOptionsObj.survey) {
+    return;
+  }
+
+  var surveyObj = myVisualizer.backendOptionsObj.survey;
+
+  var display_mode_survey_v3a = '\n\
+      <div id="vizSurveyLabel">\n\
+      Support our research by clicking a button whenever you learn something.<br/>\n\
+      </div>\n\
+      <div>\n\
+        <button class="surveyBtn" type="button">I learned something new!</button>\n\
+        <button class="surveyBtn" type="button">I found a bug in my code!</button>\n\
+        <button class="surveyBtn" type="button">I cleared up a misunderstanding!</button>\n\
+      </div>\n\
+    </div>\n';
+
+  var display_mode_survey_v3b = '\n\
+      <div id="vizSurveyLabel">\n\
+        Support our research and help future learners by describing what you are learning.\n\
+      </div>\n\
+      <div style="font-size: 10pt; margin-bottom: 5pt; padding: 1pt;">\n\
+        What did you just learn?\n\
+        <input style="font-size: 10pt; padding: 1pt;" type="text" id="iJustLearnedInput" size="60" maxlength=300/>\n\
+        <button id="iJustLearnedSubmission" type="button" style="font-size: 10pt;">Submit</button>\n\
+        <span id="iJustLearnedThanks"\n\
+              style="color: #e93f34; font-weight: bold; font-size: 11pt; display: none;">\n\
+          Thanks!\n\
+        </span>\n\
+      </div>';
+
+  var display_mode_survey_v3c = '\n\
+      <div id="vizSurveyLabel">\n\
+      Support our research by clicking a button whenever you learn something.<br/>\n\
+      </div>\n\
+      <div style="margin-top: 12px;">\n\
+        You hoped to learn:\n\
+        "<span id="userHopeLearn"></span>"<br/>\n\
+        <button class="surveyBtn" type="button">I just learned something about that topic!</button>\n\
+        <button class="surveyBtn" type="button">I just learned something else new!</button>\n\
+      </div>\n\
+    </div>\n';
+
+  var testingGroup = surveyObj.testing_group;
+
+  var display_mode_survey_HTML = '';
+  if (testingGroup == 'a') {
+    display_mode_survey_HTML = display_mode_survey_v3a;
+  } else if (testingGroup == 'b') {
+    display_mode_survey_HTML = display_mode_survey_v3b;
+  } else if (testingGroup == 'c') {
+    display_mode_survey_HTML = display_mode_survey_v3c;
+  } else {
+    assert(false);
+  }
+
+  $("#surveyHeader").html(display_mode_survey_HTML);
+
+  $("#vizSurveyLabel").css('font-size', '8pt')
+                      .css('color', '#666')
+                      .css('margin-bottom', '5pt');
+  $(".surveyBtn").css('margin-right', '6px');
+
+  if (testingGroup == 'c') {
+    $("#userHopeLearn").html(htmlspecialchars(surveyObj.what_learn_Q));
+  }
+
+
+  // testingGroup == 'a' || testingGroup == 'c'
+  // use unbind first so that this function is idempotent
+  $('.surveyBtn').unbind().click(function(e) {
+    var buttonPrompt = $(this).html();
+    var res = prompt('You said, "' + buttonPrompt + '"' + '\nPlease describe what you just learned:');
+
+    if (!$.trim(res)) {
+      return;
+    }
+
+    var myArgs = getAppState();
+    myArgs.surveyQuestion = buttonPrompt;
+    myArgs.surveyResponse = res;
+    myArgs.surveyVersion = 'v3';
+    myArgs.testing_group = testingGroup; // use underscore for consistency
+
+    myArgs.updateHistoryJSON = JSON.stringify(myVisualizer.updateHistory);
+
+    if (surveyObj.what_learn_Q) {
+      myArgs.what_learn_Q = surveyObj.what_learn_Q;
+    }
+
+    if (supports_html5_storage()) {
+      myArgs.user_uuid = localStorage.getItem('opt_uuid');
+    }
+
+    $.get('survey.py', myArgs, function(dat) {});
+
+    logEvent({type: 'survey',
+              appState: getAppState(),
+              surveyQuestion: myArgs.surveyQuestion,
+              surveyResponse: myArgs.surveyResponse,
+              surveyVersion: myArgs.surveyVersion,
+              testing_group: myArgs.testing_group,
+              what_learn_Q: myArgs.what_learn_Q,
+              });
+  });
+
+  // testingGroup == 'b'
+  // use unbind first so that this function is idempotent
+  $('#iJustLearnedSubmission').unbind().click(function(e) {
+    var resp = $("#iJustLearnedInput").val();
+
+    if (!$.trim(resp)) {
+      return;
+    }
+
+    var myArgs = getAppState();
+    myArgs.surveyQuestion = "What did you just learn?";
+    myArgs.surveyResponse = resp;
+    myArgs.surveyVersion = 'v3';
+    myArgs.testing_group = testingGroup; // use underscore for consistency
+
+    myArgs.updateHistoryJSON = JSON.stringify(myVisualizer.updateHistory);
+
+    if (supports_html5_storage()) {
+      myArgs.user_uuid = localStorage.getItem('opt_uuid');
+    }
+
+    $.get('survey.py', myArgs, function(dat) {});
+
+
+    $("#iJustLearnedInput").val('');
+    $("#iJustLearnedThanks").show();
+    $.doTimeout('iJustLearnedThanksFadeOut', 1200, function() {
+      $("#iJustLearnedThanks").fadeOut(1000);
+    });
+
+    logEvent({type: 'survey',
+              appState: getAppState(),
+              surveyQuestion: myArgs.surveyQuestion,
+              surveyResponse: myArgs.surveyResponse,
+              surveyVersion: myArgs.surveyVersion,
+              testing_group: myArgs.testing_group,
+              });
+  });
+  */
+}
+
+
+// using socket.io:
+function logEvent(obj) {
+  //console.log(obj);
+  if (loggingSocketIO) {
+    if (supports_html5_storage()) {
+      obj.user_uuid = localStorage.getItem('opt_uuid');
+    }
+    // this probably won't match the server time due to time zones, etc.
+    obj.clientTime = new Date().getTime();
+
+    if (loggingSocketIO.connected) {
+      loggingSocketIO.emit('opt-client-event', obj);
+      //console.log('emitted opt-client-event:', obj);
+    } else {
+      // TODO: be careful about this getting HUGE if loggingSocketIO
+      // never connects properly ...
+      logEventQueue.push(obj); // queue this up to be logged when the client
+                               // finishes successfully connecting to the server
+
+      // we're not yet connected, or we've been disconnected by the
+      // server, so try to connect/reconnect first before emitting the event
+      loggingSocketIO.connect(); // will trigger the .on('connect', ...) handler
+    }
+  }
+}
diff --git a/v3/js/opt-frontend.js b/v3/js/opt-frontend.js
new file mode 100644
index 000000000..ea7d1d0ab
--- /dev/null
+++ b/v3/js/opt-frontend.js
@@ -0,0 +1,803 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// TODO: combine and minify with https://github.com/mishoo/UglifyJS2
+// and add version numbering using a ?-style query string to prevent
+// caching snafus
+
+
+// Pre-reqs:
+// - pytutor.js
+// - jquery.ba-bbq.min.js
+// - jquery.ba-dotimeout.min.js // for event debouncing: http://benalman.com/code/projects/jquery-dotimeout/examples/debouncing/
+// - opt-frontend-common.js
+// - js/togetherjs/togetherjs-min.js
+// should all be imported BEFORE this file
+
+
+// NASTY GLOBALS for socket.io!
+var reconnectAttempts = 0;
+var logEventQueue = []; // TODO: make sure this doesn't grow too large if socketio isn't enabled
+
+
+var originFrontendJsFile = 'opt-frontend.js';
+
+// for OPT live chat tutoring interface
+var tutorRequested = false;
+var helpQueueSize = 0;
+var tutorAvailable = false;
+var tutorWaitText = 'Please wait for the next available tutor.';
+
+var activateSyntaxErrorSurvey = true; // true;
+
+function setHelpQueueSizeLabel() {
+  if (helpQueueSize == 1) {
+    $("#helpQueueText").html('There is 1 person in line.');
+  }
+  else if (helpQueueSize == 0 || helpQueueSize > 1) {
+    $("#helpQueueText").html('There are ' + helpQueueSize + ' people in line.');
+  }
+}
+
+function requestTutor() {
+  $("#getTutorBtn,#ssDiv,#surveyHeader").hide(); // hide ASAP!
+  $("#togetherjsStatus").html("Please wait ... requesting a tutor");
+  tutorRequested = true;
+  TogetherJS();
+}
+
+function startSharedSession() { // override default
+  $("#getTutorBtn,#ssDiv,#surveyHeader").hide(); // hide ASAP!
+  $("#adHeader").hide(); // hide ASAP!
+  $("#togetherjsStatus").html("Please wait ... loading shared session");
+  tutorRequested = false;
+  TogetherJS();
+}
+
+
+function TogetherjsReadyHandler() {
+  $("#getTutorBtn,#surveyHeader").hide();
+
+  if (tutorRequested) {
+    $.get(TogetherJSConfig_hubBase + 'request-help',
+          {url: TogetherJS.shareUrl(), id: TogetherJS.shareId()},
+          null /* don't use a callback; rely on SSE */);
+
+    $("#togetherjsStatus").html('<div style="font-size: 11pt; margin-bottom: 5pt;">\
+                                 Please wait for the next available tutor. \
+                                 <span id="helpQueueText"></span></div>');
+    setHelpQueueSizeLabel(); // run after creating span#helpQueueText
+  }
+  else {
+    populateTogetherJsShareUrl();
+  }
+}
+
+function TogetherjsCloseHandler() {
+  if (tutorAvailable) {
+    $("#getTutorBtn").show();
+  }
+
+  if (appMode == "display") {
+    $("#surveyHeader").show();
+  }
+}
+
+function getBaseBackendOptionsObj() {
+  var ret = {cumulative_mode: ($('#cumulativeModeSelector').val() == 'true'),
+             heap_primitives: ($('#heapPrimitivesSelector').val() == 'true'),
+             show_only_outputs: false,
+             py_crazy_mode: ($('#pythonVersionSelector').val() == '2crazy'),
+             origin: originFrontendJsFile};
+
+  var surveyObj = getSurveyObject();
+  if (surveyObj) {
+    ret.survey = surveyObj;
+  }
+
+  return ret;
+}
+
+function getBaseFrontendOptionsObj() {
+  var ret = {// tricky: selector 'true' and 'false' values are strings!
+              disableHeapNesting: ($('#heapPrimitivesSelector').val() == 'true'),
+              textualMemoryLabels: ($('#textualMemoryLabelsSelector').val() == 'true'),
+              executeCodeWithRawInputFunc: executeCodeWithRawInput,
+
+              // always use the same visualizer ID for all
+              // instantiated ExecutionVisualizer objects,
+              // so that they can sync properly across
+              // multiple clients using TogetherJS. this
+              // shouldn't lead to problems since only ONE
+              // ExecutionVisualizer will be shown at a time
+              visualizerIdOverride: '1',
+              updateOutputCallback: function() {$('#urlOutput,#embedCodeOutput').val('');},
+
+              // undocumented experimental modes:
+              pyCrazyMode: ($('#pythonVersionSelector').val() == '2crazy'),
+              holisticMode: ($('#cumulativeModeSelector').val() == 'holistic')
+            };
+  return ret;
+}
+
+function executeCode(forceStartingInstr, forceRawInputLst) {
+  if (forceRawInputLst !== undefined) {
+    rawInputLst = forceRawInputLst; // UGLY global across modules, FIXME
+  }
+
+  var backend_script = langToBackendScript($('#pythonVersionSelector').val());
+  var backendOptionsObj = getBaseBackendOptionsObj();
+
+  var startingInstruction = forceStartingInstr ? forceStartingInstr : 0;
+
+  var frontendOptionsObj = getBaseFrontendOptionsObj();
+  frontendOptionsObj.startingInstruction = startingInstruction;
+
+  executeCodeAndCreateViz(pyInputGetValue(),
+                          backend_script, backendOptionsObj,
+                          frontendOptionsObj,
+                          'pyOutputPane',
+                          optFinishSuccessfulExecution, handleUncaughtExceptionFunc);
+}
+
+
+// domID is the ID of the element to attach to (without the leading '#' sign)
+function SyntaxErrorSurveyBubble(parentViz, domID) {
+  this.parentViz = parentViz;
+
+  this.domID = domID;
+  this.hashID = '#' + domID;
+
+  this.my = 'left center';
+  this.at = 'right center';
+
+  this.qtipHidden = false; // is there a qtip object present but hidden? (TODO: kinda confusing)
+}
+
+SyntaxErrorSurveyBubble.prototype.destroyQTip = function() {
+  $(this.hashID).qtip('destroy');
+}
+
+SyntaxErrorSurveyBubble.prototype.redrawCodelineBubble = function() {
+  if (isOutputLineVisibleForBubbles(this.domID)) {
+    if (this.qtipHidden) {
+      $(this.hashID).qtip('show');
+    }
+    else {
+      $(this.hashID).qtip('reposition');
+    }
+
+    this.qtipHidden = false;
+  }
+  else {
+    $(this.hashID).qtip('hide');
+    this.qtipHidden = true;
+  }
+}
+
+SyntaxErrorSurveyBubble.prototype.qTipContentID = function() {
+  return '#ui-tooltip-' + this.domID + '-content';
+}
+
+SyntaxErrorSurveyBubble.prototype.qTipID = function() {
+  return '#ui-tooltip-' + this.domID;
+}
+
+
+// created on 2015-04-18
+function experimentalPopUpSyntaxErrorSurvey() {
+  if (prevExecutionExceptionObjLst.length > 0) {
+    // work with the most recent entry
+    var prevExecutionExceptionObj = prevExecutionExceptionObjLst[prevExecutionExceptionObjLst.length - 1];
+    var offendingLine = prevExecutionExceptionObj.killerException.line;
+
+    if (offendingLine === undefined) {
+      return; // get out early!
+    }
+
+    // make sure jquery.qtip has been imported
+
+    var codelineIDs = [];
+    $.each(myVisualizer.domRoot.find('#pyCodeOutput .cod'), function(i, e) {
+      // hacky!
+      var domID = $(e).attr('id');
+      var lineRE = new RegExp('cod' + String(offendingLine) + '$'); // $ for end-of-line match
+      if (lineRE.test(domID)) {
+        codelineIDs.push($(e).attr('id'));
+      }
+    });
+
+    // should find only 1 match, or else something is wonky, maybe
+    // because the code changed so much that the line number in question
+    // is no longer available
+    if (codelineIDs.length === 1) {
+      var codLineId = codelineIDs[0];
+
+      var bub = new SyntaxErrorSurveyBubble(myVisualizer, codLineId);
+
+      // if pyCodeOutputDiv is narrower than the current line, then
+      // adjust the x position of the pop-up bubble accordingly to be
+      // flush with the right of pyCodeOutputDiv
+      var pcodWidth = myVisualizer.domRoot.find('#pyCodeOutputDiv').width();
+      var codLineWidth = myVisualizer.domRoot.find('#' + codLineId).parent().width(); // get enclosing 'tr'
+      var adjustX = 0; // default
+
+      // actually nix this for now to keep things simple ...
+      //if (pcodWidth < codLineWidth) {
+      //  adjustX = pcodWidth - codLineWidth; // should be negative!
+      //}
+
+      // destroy then create a new tip:
+      bub.destroyQTip();
+      $(bub.hashID).qtip($.extend({}, qtipShared, {
+        content: ' ', // can't be empty!
+        id: bub.domID,
+        position: {
+          my: bub.my,
+          at: bub.at,
+          adjust: {
+            x: adjustX,
+          },
+          effect: null, // disable all cutesy animations
+        },
+        style: {
+          classes: 'ui-tooltip-pgbootstrap ui-tooltip-pgbootstrap-RED'
+        }
+      }));
+
+      // need to set both max-width and width() ...
+      $(bub.qTipID()).css('max-width', '350px').width('350px');
+
+      var myUuid = supports_html5_storage() ? localStorage.getItem('opt_uuid') : '';
+
+      // Wording of the survey bubble:
+      /*
+      var version = 'v1'; // deployed on 2015-04-19, revoked on 2015-04-20
+      var surveyBubbleHTML = '<div id="syntaxErrBubbleContents">\
+                                <div id="syntaxErrHeader">You just fixed the following error:</div>\
+                                <div id="syntaxErrCodeDisplay"></div>\
+                                <div id="syntaxErrMsg"></div>\
+                                <div id="syntaxErrQuestion">\
+                                   If you think this message wasn\'t helpful, what would have been the best error message for you here?<br/>\
+                                   <input type="text" id="syntaxErrTxtInput" size=60 maxlength=150/><br/>\
+                                   <button id="syntaxErrSubmitBtn" type="button">Submit</button>\
+                                   <button id="syntaxErrCloseBtn" type="button">Close</button>\
+                                </div>\
+                              </div>'
+      */
+
+      /*
+      var version = 'v2'; // deployed on 2015-04-20, revoked on 2015-09-08
+      var surveyBubbleHTML = '<div id="syntaxErrBubbleContents">\
+                                <div id="syntaxErrHeader">You just fixed the following error:</div>\
+                                <div id="syntaxErrCodeDisplay"></div>\
+                                <div id="syntaxErrMsg"></div>\
+                                <div id="syntaxErrQuestion">\
+                                   If you think this message wasn\'t helpful, what would have been the best error message for you here?<br/>\
+                                   <input type="text" id="syntaxErrTxtInput" size=60 maxlength=150/><br/>\
+                                   <button id="syntaxErrSubmitBtn" type="button">Submit</button>\
+                                   <button id="syntaxErrCloseBtn" type="button">Close</button>\
+                                   <a href="#" id="syntaxErrHideAllLink">Hide all pop-ups</a>\
+                                </div>\
+                              </div>'
+      */
+
+      var version = 'v3'; // deployed on 2015-09-08
+      var surveyBubbleHTML = '<div id="syntaxErrBubbleContents">\
+                                <div id="syntaxErrHeader">You just fixed the following error:</div>\
+                                <div id="syntaxErrCodeDisplay"></div>\
+                                <div id="syntaxErrMsg"></div>\
+                                <div id="syntaxErrQuestion">\
+                                  Please help us improve error messages for future users.\
+                                   If you think the above message wasn\'t helpful, what would have been the best message for you here?<br/>\
+                                   <input type="text" id="syntaxErrTxtInput" size=60 maxlength=150/><br/>\
+                                   <button id="syntaxErrSubmitBtn" type="button">Submit</button>\
+                                   <button id="syntaxErrCloseBtn" type="button">Close</button>\
+                                   <a href="#" id="syntaxErrHideAllLink">Hide all of these pop-ups</a>\
+                                </div>\
+                              </div>'
+
+
+      $(bub.qTipContentID()).html(surveyBubbleHTML);
+
+      // unbind first, then bind a new one
+      myVisualizer.domRoot.find('#pyCodeOutputDiv')
+        .unbind('scroll')
+        .scroll(function() {
+          bub.redrawCodelineBubble();
+        });
+
+      $(bub.qTipContentID() + ' #syntaxErrSubmitBtn').click(function() {
+        var res = $(bub.qTipContentID() + ' #syntaxErrTxtInput').val();
+        var resObj = {appState: getAppState(),
+                      exc: prevExecutionExceptionObj, // note that prevExecutionExceptionObjLst is BLOWN AWAY by now
+                      opt_uuid: myUuid,
+                      reply: res,
+                      type: 'submit',
+                      v: version};
+
+        //console.log(resObj);
+        $.get('syntax_err_survey.py', {arg: JSON.stringify(resObj)}, function(dat) {});
+
+        bub.destroyQTip();
+      });
+
+      $(bub.qTipContentID() + ' #syntaxErrCloseBtn').click(function() {
+        // grab the value anyways in case the learner wrote something decent ...
+        var res = $(bub.qTipContentID() + ' #syntaxErrTxtInput').val();
+        var resObj = {appState: getAppState(),
+                      exc: prevExecutionExceptionObj, // note that prevExecutionExceptionObjLst is BLOWN AWAY by now
+                      opt_uuid: myUuid,
+                      reply: res,
+                      type: 'close',
+                      v: version};
+
+        //console.log(resObj);
+        $.get('syntax_err_survey.py', {arg: JSON.stringify(resObj)}, function(dat) {});
+
+        bub.destroyQTip();
+      });
+
+      $(bub.qTipContentID() + ' #syntaxErrHideAllLink').click(function() {
+        // grab the value anyways in case the learner wrote something decent ...
+        var res = $(bub.qTipContentID() + ' #syntaxErrTxtInput').val();
+        var resObj = {appState: getAppState(),
+                      exc: prevExecutionExceptionObj, // note that prevExecutionExceptionObjLst is BLOWN AWAY by now
+                      opt_uuid: myUuid,
+                      reply: res,
+                      type: 'killall',
+                      v: version};
+
+        activateSyntaxErrorSurvey = false; // global!
+
+        //console.log(resObj);
+        $.get('syntax_err_survey.py', {arg: JSON.stringify(resObj)}, function(dat) {});
+
+        bub.destroyQTip();
+
+        return false; // otherwise the 'a href' will trigger a page reload, ergh!
+      });
+
+
+      var bubbleAceEditor = ace.edit('syntaxErrCodeDisplay');
+      // set the size and value ASAP to get alignment working well ...
+      bubbleAceEditor.setOptions({minLines: 1, maxLines: 5}); // keep this SMALL
+      bubbleAceEditor.setValue(prevExecutionExceptionObj.myAppState.code.rtrim() /* kill trailing spaces */,
+                               -1 /* do NOT select after setting text */);
+
+      var s = bubbleAceEditor.getSession();
+      // tab -> 4 spaces
+      s.setTabSize(4);
+      s.setUseSoftTabs(true);
+      // disable extraneous indicators:
+      s.setFoldStyle('manual'); // no code folding indicators
+      bubbleAceEditor.setHighlightActiveLine(false);
+      bubbleAceEditor.setShowPrintMargin(false);
+      bubbleAceEditor.setBehavioursEnabled(false);
+
+      bubbleAceEditor.setFontSize(10);
+
+
+      $('#syntaxErrCodeDisplay').css('width', '320px');
+      $('#syntaxErrCodeDisplay').css('height', '90px'); // VERY IMPORTANT so that it works on I.E., ugh!
+
+      // don't do real-time syntax checks:
+      // https://github.com/ajaxorg/ace/wiki/Syntax-validation
+      s.setOption("useWorker", false);
+
+      var lang = prevExecutionExceptionObj.myAppState.py;
+      var mod = 'python';
+      if (lang === 'java') {
+        mod = 'java';
+      } else if (lang === 'js') {
+        mod = 'javascript';
+      } else if (lang === 'ts') {
+        mod = 'typescript';
+      } else if (lang === 'ruby') {
+        mod = 'ruby';
+      }
+      s.setMode("ace/mode/" + mod);
+
+      bubbleAceEditor.setReadOnly(true);
+
+      s.setAnnotations([{row: offendingLine - 1 /* zero-indexed */,
+                         type: 'error',
+                         text: prevExecutionExceptionObj.killerException.exception_msg}]);
+
+      // scroll down to the line where the error occurred, trying to center it
+      // by subtracing 3 from it (which should center it, assuming we're
+      // displaying 5 lines of context)
+      if ((offendingLine - 3) > 0) {
+        bubbleAceEditor.scrollToLine(offendingLine - 3);
+      }
+
+      // don't forget htmlspecialchars
+      $("#syntaxErrMsg").html(htmlspecialchars(prevExecutionExceptionObj.killerException.exception_msg));
+
+      bub.redrawCodelineBubble(); // do an initial redraw to align everything
+
+      //globalBub = bub; // for debugging
+
+      // log an event whenever this bubble is show (i.e., an 'impression')
+      // NB: it might actually be hidden if it appears on a line that
+      // isn't initially visible to the user, but whatevers ...
+      var impressionObj = {appState: getAppState(),
+                           exceptionLst: prevExecutionExceptionObjLst,
+                           opt_uuid: myUuid,
+                           type: 'show',
+                           v: version};
+      //console.log(impressionObj);
+      $.get('syntax_err_survey.py', {arg: JSON.stringify(impressionObj)}, function(dat) {});
+    }
+  }
+}
+
+
+function initAceAndOptions() {
+  if ($('#pythonVersionSelector').val() === 'java') {
+    $("#javaOptionsPane").show();
+  } else {
+    $("#javaOptionsPane").hide();
+  }
+  setAceMode(); // update syntax highlighting mode
+}
+
+
+var JS_EXAMPLES = {
+  jsFactExLink: 'js-example-code/fact.js',
+  jsDatatypesExLink: 'js-example-code/data-types.js',
+  jsExceptionExLink: 'js-example-code/caught-exception.js',
+  jsClosureExLink: 'js-example-code/closure1.js',
+  jsShadowingExLink: 'js-example-code/var-shadowing2.js',
+  jsConstructorExLink: 'js-example-code/constructor.js',
+  jsInhExLink: 'js-example-code/inheritance.js',
+};
+
+var TS_EXAMPLES = {
+  tsHelloExLink: 'ts-example-code/hello.ts',
+  tsGreeterExLink: 'ts-example-code/greeter.ts',
+  tsGreeterGenericsExLink: 'ts-example-code/greeter-generics.ts',
+  tsInheritanceExLink: 'ts-example-code/inheritance.ts',
+};
+
+var JAVA_EXAMPLES = {
+  javaVarLink: 'java-example-code/Variables.java',
+  javaCFLink: 'java-example-code/ControlFlow.java',
+  javaSqrtLink: 'java-example-code/Sqrt.java',
+  javaExecLimitLink: 'java-example-code/ExecLimit.java',
+  javaStringsLink: 'java-example-code/Strings.java',
+
+  javaPassByValLink: 'java-example-code/PassByValue.java',
+  javaRecurLink: 'java-example-code/Recursion.java',
+  javaSOLink: 'java-example-code/StackOverflow.java',
+
+  javaRolexLink: 'java-example-code/Rolex.java',
+  javaPersonLink: 'java-example-code/Person.java',
+  javaComplexLink: 'java-example-code/Complex.java',
+  javaCastingLink: 'java-example-code/Casting.java',
+
+  javaLLLink: 'java-example-code/LinkedList.java',
+  javaStackQueueLink: 'java-example-code/StackQueue.java',
+  javaPostfixLink: 'java-example-code/Postfix.java',
+  javaSTLink: 'java-example-code/SymbolTable.java',
+
+  javaToStringLink: 'java-example-code/ToString.java',
+  javaReflectLink: 'java-example-code/Reflect.java',
+  javaExceptionLink: 'java-example-code/Exception.java',
+  javaExceptionFlowLink: 'java-example-code/ExceptionFlow.java',
+  javaTwoClassesLink: 'java-example-code/TwoClasses.java',
+
+  javaForestLink: 'java-example-code/Forest.java',
+  javaKnapsackLink: 'java-example-code/Knapsack.java',
+  javaStaticInitLink: 'java-example-code/StaticInitializer.java',
+  javaSyntheticLink: 'java-example-code/Synthetic.java',
+};
+
+var PY2_EXAMPLES = {
+  tutorialExampleLink: "example-code/py_tutorial.txt",
+  strtokExampleLink: "example-code/strtok.txt",
+  listCompLink: "example-code/list-comp.txt",
+  compsLink: "example-code/comprehensions.txt",
+  fibonacciExampleLink: "example-code/fib.txt",
+  memoFibExampleLink: "example-code/memo_fib.txt",
+  factExampleLink: "example-code/fact.txt",
+  filterExampleLink: "example-code/filter.txt",
+  insSortExampleLink: "example-code/ins_sort.txt",
+  aliasExampleLink: "example-code/aliasing.txt",
+  happyExampleLink: "example-code/happy.txt",
+  newtonExampleLink: "example-code/sqrt.txt",
+  oopSmallExampleLink: "example-code/oop_small.txt",
+  mapExampleLink: "example-code/map.txt",
+  rawInputExampleLink: "example-code/raw_input.txt",
+  oop1ExampleLink: "example-code/oop_1.txt",
+  oop2ExampleLink: "example-code/oop_2.txt",
+  inheritanceExampleLink: "example-code/oop_inherit.txt",
+  sumExampleLink: "example-code/sum.txt",
+  pwGcdLink: "example-code/wentworth_gcd.txt",
+  pwSumListLink: "example-code/wentworth_sumList.txt",
+  towersOfHanoiLink: "example-code/towers_of_hanoi.txt",
+  pwTryFinallyLink: "example-code/wentworth_try_finally.txt",
+  sumCubesLink: "example-code/sum-cubes.txt",
+  decoratorsLink: "example-code/decorators.txt",
+  genPrimesLink: "example-code/gen_primes.txt",
+  genExprLink: "example-code/genexpr.txt",
+  closure1Link: "example-code/closures/closure1.txt",
+  closure2Link: "example-code/closures/closure2.txt",
+  closure3Link: "example-code/closures/closure3.txt",
+  closure4Link: "example-code/closures/closure4.txt",
+  closure5Link: "example-code/closures/closure5.txt",
+  lambdaParamLink: "example-code/closures/lambda-param.txt",
+  aliasing1Link: "example-code/aliasing/aliasing1.txt",
+  aliasing2Link: "example-code/aliasing/aliasing2.txt",
+  aliasing3Link: "example-code/aliasing/aliasing3.txt",
+  aliasing4Link: "example-code/aliasing/aliasing4.txt",
+  aliasing5Link: "example-code/aliasing/aliasing5.txt",
+  aliasing6Link: "example-code/aliasing/aliasing6.txt",
+  aliasing7Link: "example-code/aliasing/aliasing7.txt",
+  aliasing8Link: "example-code/aliasing/aliasing8.txt",
+  ll1Link: "example-code/linked-lists/ll1.txt",
+  ll2Link: "example-code/linked-lists/ll2.txt",
+  sumListLink: "example-code/sum-list.txt",
+  varargsLink: "example-code/varargs.txt",
+  forElseLink: "example-code/for-else.txt",
+  metaclassLink: "example-code/metaclass.txt",
+}
+
+var PY3_EXAMPLES = {
+  tortureLink: "example-code/closures/student-torture.txt",
+  nonlocalLink: "example-code/nonlocal.txt",
+}
+
+var RUBY_EXAMPLES = {
+  rubyBlocksLink: 'ruby-example-code/blocks-basic.rb',
+  rubyBlocksScopingLink: 'ruby-example-code/blocks-scoping-2.rb',
+  rubyInheritanceLink: 'ruby-example-code/class-inheritance.rb',
+  rubyConstantsLink: 'ruby-example-code/constants-4.rb',
+  rubyContainersLink: 'ruby-example-code/container-data-types.rb',
+  rubyGlobalsLink: 'ruby-example-code/globals.rb',
+  rubyLambdaScopingLink: 'ruby-example-code/lambda-scoping-2.rb',
+  rubyMegagreeterLink: 'ruby-example-code/megagreeter.rb',
+  rubyProcLink: 'ruby-example-code/proc-basic.rb',
+  rubyProcScopingLink: 'ruby-example-code/proc-scoping.rb',
+  rubySymbolsLink: 'ruby-example-code/symbols.rb',
+  rubyPrivateProtectedLink: 'ruby-example-code/class-private-protected.rb',
+  rubyInstClassVarsComplexLink: 'ruby-example-code/inst-class-vars-complex.rb',
+  rubyToplevelLink: 'ruby-example-code/toplevel-inst-class-vars.rb',
+  rubyBlocksScoping3Link: 'ruby-example-code/blocks-scoping-3.rb',
+  rubyProcReturnLink: 'ruby-example-code/proc-return.rb',
+};
+
+var chatBox = undefined;
+function createChatBox() {
+  assert(!chatBox);
+  chatBox = $("#chat_div").chatbox({id: "Me",
+                                    user: {key : "value"},
+                                    title: "Live Chat With Tutor",
+                                    width: 250,
+                                    offset: 2, // offset from right edge
+                                    messageSent: chatMsgSent,
+                                    boxClosed: chatBoxClosed,
+                                    chatboxToggled: chatBoxToggled,
+                                  });
+}
+
+function chatMsgSent(id, user, msg) {
+  $("#chat_div").chatbox("option", "boxManager").addMsg(id, msg);
+  logEvent({type: 'opt-client-chat', text: msg, sid: loggingSocketIO ? loggingSocketIO.id : undefined});
+}
+
+// only called when the user hits the X button to explicitly close the chat box
+function chatBoxClosed(id) {
+  logEvent({type: 'opt-client-chat', text: '[closed chat box]', sid: loggingSocketIO ? loggingSocketIO.id : undefined});
+}
+
+// called when the user toggles the chat box open or close
+function chatBoxToggled(visible) {
+  var msg = '[minimized chat box]';
+  if (visible) {
+    msg = '[maximized chat box]';
+  }
+  logEvent({type: 'opt-client-chat', text: msg, sid: loggingSocketIO ? loggingSocketIO.id : undefined});
+}
+
+$(document).ready(function() {
+  setSurveyHTML();
+
+  // for OPT live chat tutoring interface -- DEPRECATED FOR NOW
+  /*
+  try {
+    var source = new EventSource(TogetherJSConfig_hubBase + 'learner-SSE');
+    source.onmessage = function(e) {
+      var dat = JSON.parse(e.data);
+
+      // nasty globals
+      helpQueueSize = dat.helpQueueUrls;
+      tutorAvailable = dat.helpAvailable;
+
+      setHelpQueueSizeLabel();
+
+      if (tutorAvailable && !TogetherJS.running) {
+        $("#getTutorBtn").fadeIn(750, redrawConnectors);
+      }
+      else {
+        $("#getTutorBtn").fadeOut(750, redrawConnectors);
+      }
+    };
+  }
+  catch(err) {
+    // ugh, SSE doesn't seem to work in Safari
+    console.warn("Sad ... EventSource not supported :(");
+  }
+
+  $("#getTutorBtn").click(requestTutor);
+  */
+
+  $("#hideHeaderLink").click(function() {
+    $("#experimentalHeader").hide();
+    if (myVisualizer) {
+      myVisualizer.updateOutput(); // redraw arrows
+    }
+    return false; // don't reload da page
+  });
+
+  // canned examples
+  $(".exampleLink").click(function() {
+    var myId = $(this).attr('id');
+    var exFile;
+    var lang;
+    if (JS_EXAMPLES[myId] !== undefined) {
+      exFile = JS_EXAMPLES[myId];
+      lang = 'js';
+    } else if (TS_EXAMPLES[myId] !== undefined) {
+      exFile = TS_EXAMPLES[myId];
+      lang = 'ts';
+    } else if (JAVA_EXAMPLES[myId] !== undefined) {
+      exFile = JAVA_EXAMPLES[myId];
+      lang = 'java';
+    } else if (RUBY_EXAMPLES[myId] !== undefined) {
+      exFile = RUBY_EXAMPLES[myId];
+      lang = 'ruby';
+    } else if (PY2_EXAMPLES[myId] !== undefined) {
+      exFile = PY2_EXAMPLES[myId];
+
+      // only switch Python mode to 2 if we're not on '2' or '3'; otherwise
+      // leave as-is so as not to rock the boat
+      if ($('#pythonVersionSelector').val() !== '2' &&
+          $('#pythonVersionSelector').val() !== '3') {
+        lang = '2';
+      }
+    } else {
+      exFile = PY3_EXAMPLES[myId];
+      assert(exFile !== undefined);
+      lang = '3';
+    }
+
+
+    if (lang) {
+      $('#pythonVersionSelector').val(lang);
+    }
+
+    $.get(exFile, function(dat) {
+      pyInputSetValue(dat);
+      initAceAndOptions();
+
+      // very subtle! for TogetherJS to sync #pythonVersionSelector
+      // properly, we must manually send a sync request event:
+      if (TogetherJS && TogetherJS.running) {
+        TogetherJS.send({type: "syncAppState",
+                         myAppState: getAppState(),
+                         codeInputScrollTop: pyInputGetScrollTop(),
+                         pyCodeOutputDivScrollTop: myVisualizer ?
+                                                   myVisualizer.domRoot.find('#pyCodeOutputDiv').scrollTop() :
+                                                   undefined});
+      }
+
+    }, 'text' /* data type - set to text or else jQuery tries to EXECUTE the JS example code! */);
+    return false; // prevent 'a' click from going to an actual link
+  });
+  $('#pythonVersionSelector').change(initAceAndOptions);
+
+
+  $('#genEmbedBtn').bind('click', function() {
+    assert(appMode == 'display' || appMode == 'visualize' /* 'visualize' is deprecated */);
+    var myArgs = getAppState();
+    delete myArgs.mode;
+    myArgs.codeDivWidth = myVisualizer.DEFAULT_EMBEDDED_CODE_DIV_WIDTH;
+    myArgs.codeDivHeight = myVisualizer.DEFAULT_EMBEDDED_CODE_DIV_HEIGHT;
+
+    var embedUrlStr = $.param.fragment(domain + "iframe-embed.html", myArgs, 2 /* clobber all */);
+    embedUrlStr = embedUrlStr.replace(/\)/g, '%29') // replace ) with %29 so that links embed well in Markdown
+    var iframeStr = '<iframe width="800" height="500" frameborder="0" src="' + embedUrlStr + '"> </iframe>';
+    $('#embedCodeOutput').val(iframeStr);
+  });
+
+  genericOptFrontendReady(); // initialize at the end
+
+
+  // deployed on 2015-03-12, taken down on 2015-03-16
+  //$("#surveyHeader").html('<a href="http://45.56.123.166/~mgordon/OnlinePythonTutor/v3/embedding-demo.html?session=fvkqv4423mcxr" target="_blank">Click here to help our research</a> by collaboratively annotating<br/>a piece of Python code to create a tutorial for beginners.');
+  //$("#surveyHeader").css('font-size', '12pt');
+
+  // run this AFTER genericOptFrontendReady so that opt_uuid is already
+  // set by now
+  var myUuid = supports_html5_storage() ? localStorage.getItem('opt_uuid') : '';
+  // deployed on 2015-03-19, added opt_uuid param on 2015-03-20
+  // taken down on 2015-05-14
+  //$("#surveyHeader")
+  //  .html('<iframe width="820" height="120" frameborder="0" src="http://45.56.123.166/~mgordon/OnlinePythonTutor/v3/embedding-demo-blur-frame.html?opt_uuid=' + myUuid + '"></iframe>')
+  //  .css('margin-bottom', '10px');
+
+
+  initAceAndOptions(); // do this after genericOptFrontendReady
+
+  // connect on-demand in logEvent(), not here
+  //loggingSocketIO = io('http://104.237.139.253:5000/userlog'); // PRODUCTION_PORT
+  //loggingSocketIO = io('http://104.237.139.253:5001/userlog'); // DEBUG_PORT
+
+
+  if (loggingSocketIO) {
+    loggingSocketIO.on('connect', function() {
+      //console.log('CONNECTED and emitting', logEventQueue.length, 'events');
+
+      if (logEventQueue.length > 0) {
+        // the reconnectAttempts field that denotes how many times you've
+        // attempted to reconnect (which is also how many times you've
+        // been kicked off by the logging server for, say, being idle).
+        // add this as an extra field on the FIRST event
+        if (reconnectAttempts > 0) {
+          logEventQueue[0].reconnectAttempts = reconnectAttempts;
+        }
+
+        while (logEventQueue.length > 0) {
+          loggingSocketIO.emit('opt-client-event', logEventQueue.pop());
+        }
+      }
+      assert(logEventQueue.length === 0);
+
+      reconnectAttempts++;
+    });
+
+    loggingSocketIO.on('opt-codeopticon-observer-chat', function(msg) {
+      if (!chatBox) {
+        createChatBox();
+      } else {
+        $("#chat_div").chatbox("option", "hidden", false);
+        $("#chat_div").chatbox("showContent");
+      }
+
+      $("#chat_div").chatbox("option", "boxManager").addMsg('Tutor', msg.text);
+    });
+  }
+
+  $("#createTestsLink").click(function() {
+    initTestcasesPane('#testCasesPane');
+    $(this).hide();
+    return false;
+  });
+});
diff --git a/v3/js/opt-ipy.js b/v3/js/opt-ipy.js
new file mode 100644
index 000000000..57ed5c6ee
--- /dev/null
+++ b/v3/js/opt-ipy.js
@@ -0,0 +1,134 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// Front-end for OPT + IPython shell integration
+
+
+// Pre-reqs: pytutor.js and jquery.ba-bbq.min.js should be imported BEFORE this file
+
+
+var myVisualizer = null; // singleton ExecutionVisualizer instance
+
+
+$(document).ready(function() {
+  // redraw connector arrows on window resize
+  $(window).resize(function() {
+    myVisualizer.redrawConnectors();
+  });
+
+  updater.start();
+});
+
+
+// Adapted from https://github.com/facebook/tornado/tree/master/demos/websocket
+
+// Copyright 2009 FriendFeed
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+// License for the specific language governing permissions and limitations
+// under the License.
+
+var updater = {
+    socket: null,
+    start: function() {
+      var url = "ws://" + location.host + "/chatsocket";
+      updater.socket = new WebSocket(url);
+      updater.socket.onmessage = function(event) {
+        updater.showMessage(JSON.parse(event.data));
+      }
+    },
+
+    showMessage: function(message) {
+      if (message.type == 'wholetrace') {
+          payload = message.payload
+
+          var curInstr = 0;
+          var jumpToEnd = true; // yes by default
+
+          // if the user isn't currently viewing the final element of
+          // the trace, then restore their original position, so that
+          // their display doesn't suddenly jump to the end
+          if (myVisualizer) {
+            curInstr = myVisualizer.curInstr;
+            jumpToEnd = (curInstr == myVisualizer.curTrace.length - 1);
+          }
+
+          if (jumpToEnd) {
+            myVisualizer = new ExecutionVisualizer('vizDiv',
+                                                   payload,
+                                                   {embeddedMode: true,
+                                                    jumpToEnd: true});
+          }
+          else {
+            myVisualizer = new ExecutionVisualizer('vizDiv',
+                                                   payload,
+                                                   {embeddedMode: true,
+                                                    startingInstruction: curInstr});
+          }
+
+          // set keyboard bindings
+          // VERY IMPORTANT to clear and reset this every time or
+          // else the handlers might be bound multiple times
+          $(document).unbind('keydown');
+          $(document).keydown(function(k) {
+            if (k.keyCode == 37) { // left arrow
+              if (myVisualizer.stepBack()) {
+                k.preventDefault(); // don't horizontally scroll the display
+              }
+            }
+            else if (k.keyCode == 39) { // right arrow
+              if (myVisualizer.stepForward()) {
+                k.preventDefault(); // don't horizontally scroll the display
+              }
+            }
+          });
+        }
+        else if (message.type == 'difftrace') {
+            // TODO: implement optimization based on, say,
+            // https://code.google.com/p/google-diff-match-patch/
+
+            // for starters, simply create a new ExecutionVisualizer
+            // object using the patched version of the payload
+        }
+        else if (message.type == 'clear') {
+          myVisualizer = null;
+          $('#vizDiv').empty();
+          $(document).unbind('keydown');
+          return;
+        }
+    }
+};
diff --git a/v3/js/opt-office-mix.js b/v3/js/opt-office-mix.js
new file mode 100644
index 000000000..a3e5e66da
--- /dev/null
+++ b/v3/js/opt-office-mix.js
@@ -0,0 +1,495 @@
+// TODOs:
+//
+
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+// Pre-reqs:
+// - pytutor.js
+// - jquery.ba-bbq.min.js
+// - jquery.ba-dotimeout.min.js // for event debouncing: http://benalman.com/code/projects/jquery-dotimeout/examples/debouncing/
+// - opt-frontend-common.js
+// should all be imported BEFORE this file
+
+
+var originFrontendJsFile = 'opt-office-mix.js';
+
+// modeled after Kurt's simplelab.ts
+var _labEditor = null; // for Edit mode
+var _labViewer = null; // for View mode
+
+var _savedCurInstr = undefined; // nasty global
+var _lastSavedAppState = undefined; // nasty global
+
+
+function executeCode(forceStartingInstr, forceRawInputLst) {
+  if (forceRawInputLst !== undefined) {
+    rawInputLst = forceRawInputLst; // UGLY global across modules, FIXME
+  }
+
+  var backend_script = null;
+  if ($('#pythonVersionSelector').val() == '2') {
+      backend_script = python2_backend_script;
+  }
+  else if ($('#pythonVersionSelector').val() == '3') {
+      backend_script = python3_backend_script;
+  }
+  else if ($('#pythonVersionSelector').val() == 'js') {
+      backend_script = js_backend_script;
+  }
+  else if ($('#pythonVersionSelector').val() == 'ts') {
+      backend_script = ts_backend_script;
+  }
+  else if ($('#pythonVersionSelector').val() == 'ruby') {
+      backend_script = ruby_backend_script;
+  }
+  else if ($('#pythonVersionSelector').val() == 'java') {
+      backend_script = java_backend_script;
+  }
+  assert(backend_script);
+
+  var backendOptionsObj = {cumulative_mode: ($('#cumulativeModeSelector').val() == 'true'),
+                           heap_primitives: ($('#heapPrimitivesSelector').val() == 'true'),
+                           show_only_outputs: false,
+                           py_crazy_mode: false,
+                           origin: originFrontendJsFile};
+
+  var startingInstruction = forceStartingInstr ? forceStartingInstr : 0;
+
+  var frontendOptionsObj = {startingInstruction: startingInstruction,
+                            embeddedMode: true,
+
+                            // tricky: selector 'true' and 'false' values are strings!
+                            disableHeapNesting: ($('#heapPrimitivesSelector').val() == 'true'),
+                            textualMemoryLabels: ($('#textualMemoryLabelsSelector').val() == 'true'),
+                            executeCodeWithRawInputFunc: executeCodeWithRawInput,
+
+                            // undocumented experimental modes:
+                            pyCrazyMode: false, holisticMode: false
+                           }
+
+  executeCodeAndCreateViz(pyInputGetValue(),
+                          backend_script, backendOptionsObj,
+                          frontendOptionsObj,
+                          'pyOutputPane',
+                          officeMixFinishSuccessfulExecution, handleUncaughtExceptionFunc);
+}
+
+
+function officeMixFinishSuccessfulExecution() {
+  updateAppDisplayForMix('display'); // do this first
+
+  $("#executeBtn").attr('disabled', false);
+  $("#executeBtn").hide();
+
+  if (_savedCurInstr !== undefined) {
+    myVisualizer.renderStep(_savedCurInstr);
+    _savedCurInstr = undefined;
+  }
+
+  saveCurrentConfiguration();
+  // save configuration on every step action
+  myVisualizer.add_pytutor_hook("end_updateOutput", function(args) {
+    saveCurrentConfiguration();
+    return [false]; // pass through to let other hooks keep handling
+  });
+}
+
+
+// Adapted from Kurt's simplelab.ts
+//
+// Returns the lab configuration from the provided data
+function getConfigurationFromData(dat) {
+    var appVersion = { major: 1, minor: 0 };
+    var activityComponent = {
+        type: Labs.Components.ActivityComponentType,
+        name: "", // XXX: can this be blank?
+        values: {},
+        data: dat,
+        secure: false
+    };
+    var configuration = {
+        appVersion: appVersion,
+        components: [activityComponent],
+        name: "", // XXX: can this be blank?
+        timeline: null,
+        analytics: null
+    };
+
+    return configuration;
+}
+
+
+// a wrapper for getAppState() that caches the value of the current
+// execution trace if we're in display mode
+function getAppStateWithTraceCache() {
+  var ret = getAppState();
+
+  // only do caching in Mix Edit mode, *not* in View mode, since we
+  // don't want to invalidate the original cache entry that was populated
+  // in Edit mode just because we're messing around in View mode.
+  if (_labEditor /* in Mix Edit mode */ &&
+      ret.mode === 'display' /* in OPT Display mode */ &&
+      myVisualizer) {
+    ret.cachedTrace = myVisualizer.curTrace;
+    ret.cachedCod = myVisualizer.curInputCode;
+    ret.cachedLang = myVisualizer.params.lang;
+  }
+  return ret;
+}
+
+function enterOPTEditCodeMode() {
+  updateAppDisplayForMix('edit');
+  $("#executeBtn").html("Visualize Execution").show();
+  $("#executeBtn").attr('disabled', false);
+
+  // https://groups.google.com/forum/#!msg/ace-discuss/TQHqey_NkBg/q9x_tLrvsXoJ
+  pyInputAceEditor.resize(); // weird hack that's necessary to refresh the editor's latest text values. #weird
+
+  setAceMode(); // for syntax coloring
+
+  saveCurrentConfiguration();
+}
+
+
+function updateAppDisplayForMix(newAppMode) {
+  // idempotence is VERY important here
+  if (newAppMode == appMode) {
+    return;
+  }
+
+  appMode = newAppMode; // global!
+
+  if (appMode === undefined || appMode == 'edit' ||
+      !myVisualizer /* subtle -- if no visualizer, default to edit mode */) {
+    appMode = 'edit'; // canonicalize
+
+    $("#pyInputPane").show();
+    $("#pyOutputPane").hide();
+    $("#embedLinkDiv").hide();
+
+    // Potentially controversial: when you enter edit mode, DESTROY any
+    // existing visualizer object. note that this simplifies the app's
+    // conceptual model but breaks the browser's expected Forward and
+    // Back button flow
+    $("#pyOutputPane").empty();
+    myVisualizer = null;
+
+    $.bbq.pushState({ mode: 'edit' }, 2 /* completely override other hash strings to keep URL clean */);
+  } else if (appMode == 'display' || appMode == 'visualize' /* 'visualize' is deprecated */) {
+    assert(myVisualizer);
+    appMode = 'display'; // canonicalize
+
+    $("#pyInputPane").hide();
+    $("#pyOutputPane").show();
+    $("#embedLinkDiv").show();
+
+    doneExecutingCode();
+
+    // do this AFTER making #pyOutputPane visible, or else
+    // jsPlumb connectors won't render properly
+    myVisualizer.updateOutput();
+
+    // customize edit button click functionality AFTER rendering (NB: awkward!)
+    $('#pyOutputPane #editCodeLinkDiv').show();
+    $('#pyOutputPane #editBtn').click(function() {
+      enterOPTEditCodeMode();
+    });
+
+    $.bbq.pushState({ mode: 'display' }, 2 /* completely override other hash strings to keep URL clean */);
+  } else {
+    assert(false);
+  }
+}
+
+
+// note that nothing in 'configuration' is saved when in View mode,
+// since that's previewing how end-users will interact with the lab
+function officeMixEnterViewMode() {
+  if (_labEditor) {
+    _labEditor.done(function() { _labEditor = null; });
+  }
+
+  Labs.takeLab(function(err, labInstance) {
+    if (labInstance) {
+      _labViewer = labInstance; // global
+
+      myVisualizer = null; // clear this before doing anything else, so
+                           // that we don't accidentally invalidate cache
+      var savedAppState = _labViewer.components[0].component.data;
+
+      // very important so that trace cache can work when loading a saved Mix:
+      if (_lastSavedAppState === undefined) {
+        _lastSavedAppState = savedAppState;
+      }
+
+      setToggleOptions(savedAppState);
+      if (savedAppState.code) {
+        pyInputSetValue(savedAppState.code);
+        if (savedAppState.mode === 'display') {
+          _savedCurInstr = savedAppState.curInstr; // #crufty
+          mixLazyExecuteCode();
+        }
+      }
+
+      if (savedAppState.testCasesJSON) {
+        var testCasesLst = JSON.parse(savedAppState.testCasesJSON);
+        $("#createTestsLink").hide();
+        initTestcasesPane('#testCasesPane', saveCurrentConfiguration);
+        testCasesLst.forEach(function(e) {
+          addTestcase(e, saveCurrentConfiguration);
+        });
+      }
+
+      if (savedAppState.mode === 'edit') {
+        enterOPTEditCodeMode();
+      }
+    }
+  });
+}
+
+function officeMixEnterEditMode() {
+  if (_labViewer) {
+    _labViewer.done(function() { _labViewer = null; });
+  }
+
+  Labs.editLab(function(err, labEditor) {
+    if (labEditor) {
+      _labEditor = labEditor; // global
+
+      // this seems to run every time editLab runs
+      _labEditor.getConfiguration(function(err, configuration) {
+        if (configuration) {
+          myVisualizer = null; // clear this before doing anything else, so
+                               // that we don't accidentally invalidate cache
+          var savedAppState = configuration.components[0].data;
+
+          // very important so that trace cache can work when loading a saved Mix:
+          if (_lastSavedAppState === undefined) {
+            _lastSavedAppState = savedAppState;
+          }
+
+          setToggleOptions(savedAppState);
+          if (savedAppState.code) {
+            pyInputSetValue(savedAppState.code);
+            if (savedAppState.mode === 'display') {
+              _savedCurInstr = savedAppState.curInstr; // #crufty
+              mixLazyExecuteCode();
+            }
+          }
+
+          if (savedAppState.testCasesJSON) {
+            var testCasesLst = JSON.parse(savedAppState.testCasesJSON);
+            $("#createTestsLink").hide();
+            initTestcasesPane('#testCasesPane', saveCurrentConfiguration);
+            testCasesLst.forEach(function(e) {
+              addTestcase(e, saveCurrentConfiguration);
+            });
+          }
+
+          if (savedAppState.mode === 'edit') {
+            enterOPTEditCodeMode();
+          }
+        }
+      });
+
+      // set configuration on every code edit and option toggle, to
+      // set the 'dirty bit' on the enclosing PPT file
+      pyInputAceEditor.getSession().on("change", saveCurrentConfiguration);
+      $('select').change(saveCurrentConfiguration);
+    }
+  });
+}
+
+function saveCurrentConfiguration() {
+  if (_labEditor) {
+    var x = getAppStateWithTraceCache();
+    // propagate cachedTrace only if x doesn't already have one
+    // i.e., don't clobber the new cachedTrace if it exists
+    if (x.cachedTrace === undefined &&
+        _lastSavedAppState && _lastSavedAppState.cachedTrace) {
+      x.cachedTrace = _lastSavedAppState.cachedTrace;
+      x.cachedCod = _lastSavedAppState.cachedCod; // rtrim() already applied
+      x.cachedLang = _lastSavedAppState.cachedLang;
+    }
+    //console.log('saveCurrentConfiguration', x);
+    _labEditor.setConfiguration(getConfigurationFromData(x),
+                                function() {} /* empty error handler */);
+    _lastSavedAppState = x; // global!
+  }
+}
+
+
+function mixLazyExecuteCode() {
+  var curState = getAppState();
+  var curCod = curState.code.rtrim(); // rtrim to match cachedCod
+  var curLang = curState.py;
+
+  // ugh legacy naming mismatches:
+  if (curLang === '2') {
+    curLang = 'py2';
+  } else if (curLang === '3') {
+    curLang = 'py3';
+  }
+
+  if (_lastSavedAppState &&
+      curCod === _lastSavedAppState.cachedCod &&
+      curLang === _lastSavedAppState.cachedLang) {
+    // cache hit!
+    console.log('mixLazyExecuteCode CACHE HIT!');
+
+    // copy-pasta from excerpts of executeCodeFromScratch and friends:
+
+    // if you're in display mode, kick back into edit mode before
+    // executing or else the display might not refresh properly ... ugh
+    // krufty FIXME
+    enterEditMode();
+    clearFrontendError();
+
+    var frontendOptionsObj = {embeddedMode: true,
+                              executeCodeWithRawInputFunc: executeCodeWithRawInput,
+                              lang: _lastSavedAppState.cachedLang, // important!
+                             };
+    myVisualizer = new ExecutionVisualizer('pyOutputPane',
+                                           {code: _lastSavedAppState.cachedCod,
+                                            trace: _lastSavedAppState.cachedTrace},
+                                           frontendOptionsObj);
+
+    officeMixFinishSuccessfulExecution();
+  } else {
+    // cache miss
+    executeCodeFromScratch(); // ends with officeMixFinishSuccessfulExecution or handleUncaughtExceptionFunc
+  }
+}
+
+
+// for opt-testcases.js
+function getBaseBackendOptionsObj() {
+  var ret = {cumulative_mode: false,
+             heap_primitives: false,
+             show_only_outputs: false,
+             py_crazy_mode: false,
+             origin: originFrontendJsFile};
+  return ret;
+}
+
+function getBaseFrontendOptionsObj() {
+  ret = {embeddedMode: true};
+  return ret;
+}
+
+
+$(document).ready(function() {
+  $('#pythonVersionSelector').change(setAceMode);
+
+  $("#executeBtn").click(function() {
+    mixLazyExecuteCode();
+  });
+
+  $("#createTestsLink").click(function() {
+    initTestcasesPane('#testCasesPane', saveCurrentConfiguration);
+    $(this).hide();
+    return false;
+  });
+
+  // To run in https://labsjs.blob.core.windows.net/sdk/LabsJS-1.0.4/labshost.html
+  // append "?PostMessageLabHost" to the query string.
+  Labs.DefaultHostBuilder = function() {
+    if (window.location.href.indexOf("PostMessageLabHost") !== -1) {
+      return new Labs.PostMessageLabHost("test", parent, "*");
+    } else {
+      return new Labs.OfficeJSLabHost();
+    }
+  };
+
+  // still needed to track and trigger appMode changes
+  $(window).bind("hashchange", function(e) {
+    // if you've got some preseeded code, then parse the entire query
+    // string from scratch just like a page reload
+    if ($.bbq.getState('code')) {
+      parseQueryString();
+    }
+    // otherwise just do an incremental update
+    else {
+      var newMode = $.bbq.getState('mode');
+      //console.log('hashchange:', newMode, window.location.hash);
+      updateAppDisplay(newMode);
+    }
+  });
+
+  // TODO: in the future, make it flexible height but for now, just make
+  // it fixed-height but kinda small-ish
+  initAceEditor(200);
+  pyInputAceEditor.setOptions({minLines: 10, maxLines: 1000});
+
+  // no frills footer
+  $("#footer").css("margin-top", "0px")
+              .css("padding-top", "0px")
+              .css("border-top", "0px");
+
+  $(window).resize(redrawConnectors);
+
+  // register a generic AJAX error handler
+  $(document).ajaxError(function(evt, jqxhr, settings, exception) {
+    setFronendError(["Server error! Your code might be taking too much time to run or using too much memory.",
+                     "Report a bug to philip@pgbovine.net by clicking the 'Generate permanent link' button",
+                     "at the bottom of this page and including a URL in your email."]);
+
+    doneExecutingCode();
+  });
+
+  clearFrontendError();
+
+
+  Labs.connect(function (err, connectionResponse) {
+    var initialMode = Labs.Core.LabMode[connectionResponse.mode];
+
+    if (initialMode == 'Edit') {
+      officeMixEnterEditMode();
+      enterOPTEditCodeMode(); // do this once initially
+    } else if (initialMode == 'View') {
+      officeMixEnterViewMode();
+    }
+
+    // initialize these callbacks only after Labs.connect is successful
+    Labs.on(Labs.Core.EventTypes.ModeChanged, function(data) {
+      if (data.mode == 'Edit') {
+        officeMixEnterEditMode();
+      } else if (data.mode == 'View') {
+        officeMixEnterViewMode();
+      }
+    });
+
+    Labs.on(Labs.Core.EventTypes.Activate, function() {
+    });
+
+    Labs.on(Labs.Core.EventTypes.Deactivate, function() {
+    });
+  });
+});
diff --git a/v3/js/opt-testcases.js b/v3/js/opt-testcases.js
new file mode 100644
index 000000000..f894a2d88
--- /dev/null
+++ b/v3/js/opt-testcases.js
@@ -0,0 +1,296 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+// Pre-reqs:
+// - jquery-1.8.2.min.js
+// - pytutor.js
+// - opt-frontend-common.js
+// - ace/src-min-noconflict/ace.js
+// should all be imported BEFORE this file
+
+
+var testcasesPaneHtml = '\
+<table id="testCasesTable">\
+  <thead>\
+  <tr>\
+    <td style="width: 310px">Tests</td>\
+    <td><button id="runAllTestsButton" type="button">Run All Tests</button></td>\
+    <td>Results</td>\
+    <td></td>\
+    <td></td>\
+  </tr>\
+  </thead>\
+  <tbody>\
+  </tbody>\
+</table>\
+\
+<a href="#" id="addNewTestCase">Add new test</a>\
+'
+
+function initTestcasesPane(parentDivId, onChangeCallback /* optional */) {
+  $(parentDivId).empty(); // just to be paranoid, empty this out
+                          // (and its event handlers, too, supposedly)
+  $(parentDivId).html(testcasesPaneHtml);
+
+  $("#addNewTestCase").click(function() {
+    addTestcase(null, onChangeCallback);
+    return false; // to prevent link from being followed
+  });
+
+  $("#runAllTestsButton").click(function() {
+    $(".runTestCase").click();
+  });
+}
+
+function getCombinedCode(id) {
+  var userCod = pyInputGetValue();
+  var testCod = ace.edit('testCaseEditor_' + id).getValue();
+  // for reporting syntax errors separately for user and test code
+  var userCodNumLines = userCod.split('\n').length;
+
+  var lang = $('#pythonVersionSelector').val();
+  if (lang === 'ts' || lang === 'js' || lang === 'java') {
+    var bufferCod = '\n\n// Test code //\n';
+  } else {
+    var bufferCod = '\n\n## Test code ##\n';
+  }
+
+  var bufferCodNumLines = bufferCod.split('\n').length;
+
+  var combinedCod = userCod + bufferCod + testCod;
+  return {cod: combinedCod,
+          firstTestLine: userCodNumLines + bufferCodNumLines - 1};
+}
+
+function startRunningTest(id) {
+  $("#runAllTestsButton,.runTestCase,.vizTestCase").attr('disabled', true);
+  var e = ace.edit('testCaseEditor_' + id);
+  e.getSession().clearAnnotations();
+  $('#outputTd_' + id).html('');
+}
+
+function doneRunningTest() {
+  $("#runAllTestsButton,.runTestCase,.vizTestCase").attr('disabled', false);
+  $(".runTestCase").html('Run');
+  $(".vizTestCase").html('Visualize');
+}
+
+function runTestFinishSuccessfulExecution() {
+  doneRunningTest();
+}
+
+function vizTestFinishSuccessfulExecution() {
+  optFinishSuccessfulExecution();
+  doneRunningTest();
+}
+
+
+var curTestcaseId = 1;
+
+function addTestcase(initialCod /* optional code to pre-seed this test */,
+                     onChangeCallback /* to be called if this elt changes */) {
+  var id = curTestcaseId;
+  curTestcaseId++; // nasty global
+  var newTr = $('<tr/>').attr('id', 'testCaseRow_' + id);
+  $("#testCasesTable tbody").append(newTr);
+  var editorTd = $('<td/>');
+  var runBtnTd = $('<td/>');
+  var outputTd = $('<td/>');
+  var visualizeTd = $('<td/>');
+  var deleteTd = $('<td/>');
+
+  editorTd.append('<div id="testCaseEditor_' + id + '" class="testCaseEditor">');
+  runBtnTd.append('<button id="runTestCase_' + id + '" class="runTestCase" type="button">Run</button>');
+  outputTd.attr('id', 'outputTd_' + id);
+  outputTd.attr('class', 'outputTd');
+  visualizeTd.append('<button id="vizTestCase_' + id + '" class="vizTestCase" type="button">Visualize</button>');
+  deleteTd.append('<a id="delTestCase_' + id + '" href="javascript:void(0);">Delete test</a></td>');
+
+  newTr.append(editorTd);
+  newTr.append(runBtnTd);
+  newTr.append(outputTd);
+  newTr.append(visualizeTd);
+  newTr.append(deleteTd);
+
+
+  // initialize testCaseEditor with Ace:
+  var te = ace.edit('testCaseEditor_' + id);
+  // set the size and value ASAP to get alignment working well ...
+  te.setOptions({minLines: 2, maxLines: 4}); // keep this SMALL
+  te.setHighlightActiveLine(false);
+  te.setShowPrintMargin(false);
+  te.setBehavioursEnabled(false);
+  te.setFontSize(11);
+  //te.setReadOnly(true);
+
+  var s = te.getSession();
+  s.setTabSize(2);
+  s.setUseSoftTabs(true);
+  // disable extraneous indicators:
+  s.setFoldStyle('manual'); // no code folding indicators
+  // don't do real-time syntax checks:
+  // https://github.com/ajaxorg/ace/wiki/Syntax-validation
+  s.setOption("useWorker", false);
+
+  // TODO: change syntax highlighting mode if the user changes languages:
+  var lang = $('#pythonVersionSelector').val();
+  var mod = 'python';
+  var defaultVal = '\n# assert <test condition>';
+  if (lang === 'java') {
+    mod = 'java';
+    defaultVal = '// sorry, Java tests not yet supported';
+  } else if (lang === 'js') {
+    mod = 'javascript';
+    defaultVal = '\n// console.assert(<test condition>);';
+  } else if (lang === 'ts') {
+    mod = 'typescript';
+    defaultVal = '\n// console.assert(<test condition>);';
+  } else if (lang === 'ruby') {
+    mod = 'ruby';
+    defaultVal = "\n# raise 'fail' unless <test condition>";
+  }
+  s.setMode("ace/mode/" + mod);
+
+  // detect when the buffer has changed
+  s.on("change", function() {
+    if (onChangeCallback) {
+      onChangeCallback();
+    }
+  });
+
+  te.setValue(initialCod ? initialCod.rtrim() : defaultVal,
+              -1 /* do NOT select after setting text */);
+
+  function runOrVizTestCase(isViz /* true for visualize, false for run */) {
+    if (isViz) {
+      $('#vizTestCase_' + id).html("Visualizing ...");
+    } else {
+      $('#runTestCase_' + id).html("Running ...");
+    }
+
+    startRunningTest(id);
+    var dat = getCombinedCode(id);
+
+    // adapted from executeCode in opt-frontend.js
+    var backend_script = langToBackendScript($('#pythonVersionSelector').val());
+    var backendOptionsObj = getBaseBackendOptionsObj();
+    var frontendOptionsObj = getBaseFrontendOptionsObj();
+    frontendOptionsObj.jumpToEnd = true;
+
+    if (isViz) {
+      backendOptionsObj.viz_test_case = true; // just so we can see this in server logs
+    } else {
+      backendOptionsObj.run_test_case = true; // just so we can see this in server logs
+      frontendOptionsObj.runTestCaseCallback = function(trace) {
+        // scan through the trace to find any exception events. report
+        // the first one if found, otherwise assume test is 'passed'
+        var exceptionMsg = null;
+        trace.forEach(function(e) {
+          if (exceptionMsg) {
+            return;
+          }
+
+          if (e.event === 'exception') {
+            exceptionMsg = e.exception_msg;
+          }
+        });
+
+        if (exceptionMsg) {
+          $('#outputTd_' + id).html('<img src="red-sad-face.jpg"></img>');
+        } else {
+          $('#outputTd_' + id).html('<img src="yellow-happy-face.jpg"></img>');
+        }
+      };
+    }
+
+    function runTestHandleUncaughtExceptionFunc(trace) {
+      if (trace.length == 1 && trace[0].line) {
+        var errorLineNo = trace[0].line;
+        // highlight the faulting line in the test case pane itself
+        if (errorLineNo !== undefined &&
+            errorLineNo != NaN &&
+            errorLineNo >= dat.firstTestLine) {
+          var adjustedErrorLineNo = errorLineNo - dat.firstTestLine;
+          s.setAnnotations([{row: adjustedErrorLineNo,
+                             type: 'error',
+                             text: trace[0].exception_msg}]);
+          te.gotoLine(adjustedErrorLineNo + 1 /* one-indexed */);
+        }
+      }
+
+      var msg = trace[0].exception_msg;
+      var trimmedMsg = msg.split(':')[0];
+      $('#outputTd_' + id).html(htmlspecialchars(trimmedMsg));
+
+      handleUncaughtExceptionFunc(trace);
+      doneRunningTest();
+    }
+
+    executeCodeAndCreateViz(dat.cod,
+                            backend_script, backendOptionsObj,
+                            frontendOptionsObj,
+                            'pyOutputPane',
+                            isViz ? vizTestFinishSuccessfulExecution :
+                                    runTestFinishSuccessfulExecution,
+                            runTestHandleUncaughtExceptionFunc);
+  }
+
+  $('#runTestCase_' + id).click(runOrVizTestCase.bind(null, false));
+  $('#vizTestCase_' + id).click(runOrVizTestCase.bind(null, true));
+
+  $('#delTestCase_' + id).click(function() {
+    // confirm() not supported within Office Mix labs :/
+    //var res = confirm("Press OK to delete this test.");
+
+    $('#testCaseRow_' + id).remove();
+    if (onChangeCallback) {
+      onChangeCallback();
+    }
+    return false; // to prevent link from being followed
+  });
+
+  if (onChangeCallback) {
+    onChangeCallback();
+  }
+}
+
+// returns a list of strings, each of which is a test case
+function getAllTestcases() {
+  return $.map($("#testCasesTable .testCaseEditor"), function(e) {
+    var editor = ace.edit($(e).attr('id'));
+    return editor.getValue();
+  });
+}
+
+// see getAppState to see where it calls out to this function:
+function appStateAugmenter(appState) {
+  var tc = getAllTestcases();
+  if (tc.length > 0) {
+    appState['testCasesJSON'] = JSON.stringify(tc);
+  }
+}
diff --git a/v3/js/pytutor.js b/v3/js/pytutor.js
new file mode 100644
index 000000000..c52144392
--- /dev/null
+++ b/v3/js/pytutor.js
@@ -0,0 +1,4437 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+
+/* To import, put this at the top of your HTML page:
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+*/
+
+
+/* Coding gotchas:
+
+- NEVER use naked $(__) or d3.select(__) statements to select DOM elements.
+
+  ALWAYS use myViz.domRoot or myViz.domRootD3 for jQuery and D3, respectively.
+
+  Otherwise things will break in weird ways when you have more than one visualization
+  embedded within a webpage, due to multiple matches in the global namespace.
+
+
+- always use generateID to generate unique CSS IDs, or else things will break
+  when multiple ExecutionVisualizer instances are displayed on a webpage
+
+*/
+
+var SVG_ARROW_POLYGON = '0,3 12,3 12,0 18,5 12,10 12,7 0,7';
+var SVG_ARROW_HEIGHT = 10; // must match height of SVG_ARROW_POLYGON
+
+var curVisualizerID = 1; // global to uniquely identify each ExecutionVisualizer instance
+
+// domRootID is the string ID of the root element where to render this instance
+// dat is data returned by the Python Tutor backend consisting of two fields:
+//   code  - string of executed code
+//   trace - a full execution trace
+//
+// params is an object containing optional parameters, such as:
+//   jumpToEnd - if non-null, jump to the very end of execution
+//   startingInstruction - the (zero-indexed) execution point to display upon rendering
+//   hideOutput - hide "Program output" display
+//   codeDivHeight - maximum height of #pyCodeOutputDiv (in integer pixels)
+//   codeDivWidth  - maximum width  of #pyCodeOutputDiv (in integer pixels)
+//   editCodeBaseURL - the base URL to visit when the user clicks 'Edit code' (if null, then 'Edit code' link hidden)
+//   allowEditAnnotations - allow user to edit per-step annotations (default: false)
+//   embeddedMode         - shortcut for hideOutput=true, allowEditAnnotations=false,
+//                                       codeDivWidth=this.DEFAULT_EMBEDDED_CODE_DIV_WIDTH,
+//                                       codeDivHeight=this.DEFAULT_EMBEDDED_CODE_DIV_HEIGHT
+//   disableHeapNesting   - if true, then render all heap objects at the top level (i.e., no nested objects)
+//   drawParentPointers   - if true, then draw environment diagram parent pointers for all frames
+//                          WARNING: there are hard-to-debug MEMORY LEAKS associated with activating this option
+//   textualMemoryLabels  - render references using textual memory labels rather than as jsPlumb arrows.
+//                          this is good for slow browsers or when used with disableHeapNesting
+//                          to prevent "arrow overload"
+//   showOnlyOutputs      - show only program outputs and NOT internal data structures
+//   updateOutputCallback - function to call (with 'this' as parameter)
+//                          whenever this.updateOutput() is called
+//                          (BEFORE rendering the output display)
+//   heightChangeCallback - function to call (with 'this' as parameter)
+//                          whenever the HEIGHT of #dataViz changes
+//   verticalStack - if true, then stack code display ON TOP of visualization
+//                   (else place side-by-side)
+//   visualizerIdOverride - override visualizer ID instead of auto-assigning it
+//                          (BE CAREFUL ABOUT NOT HAVING DUPLICATE IDs ON THE SAME PAGE,
+//                           OR ELSE ARROWS AND OTHER STUFF WILL GO HAYWIRE!)
+//   executeCodeWithRawInputFunc - function to call when you want to re-execute the given program
+//                                 with some new user input (somewhat hacky!)
+//   highlightLines - highlight current and previously executed lines (default: false)
+//   arrowLines     - draw arrows pointing to current and previously executed lines (default: true)
+//   compactFuncLabels - render functions with a 'func' prefix and no type label
+//   showAllFrameLabels - display frame and parent frame labels for all functions (default: false)
+//   pyCrazyMode    - run with Py2crazy, which provides expression-level
+//                    granularity instead of line-level granularity (HIGHLY EXPERIMENTAL!)
+//   hideCode - hide the code display and show only the data structure viz
+//   tabularView - render a tabular view of ALL steps at once (EXPERIMENTAL)
+//   lang - to render labels in a style appropriate for other languages,
+//          and to display the proper language in langDisplayDiv
+//          e.g., 'py2' for Python 2, 'py3' for Python 3, 'js' for JavaScript, 'java' for Java, 'ts' for TypeScript, 'ruby' for Ruby
+//          [default is Python-style labels]
+//   debugMode - some extra debugging printouts
+function ExecutionVisualizer(domRootID, dat, params) {
+  this.curInputCode = dat.code.rtrim(); // kill trailing spaces
+  this.curTrace = dat.trace;
+
+  this.DEFAULT_EMBEDDED_CODE_DIV_WIDTH = 350;
+  this.DEFAULT_EMBEDDED_CODE_DIV_HEIGHT = 400;
+
+  // if the final entry is raw_input or mouse_input, then trim it from the trace and
+  // set a flag to prompt for user input when execution advances to the
+  // end of the trace
+  if (this.curTrace.length > 0) {
+    var lastEntry = this.curTrace[this.curTrace.length - 1];
+    if (lastEntry.event == 'raw_input') {
+      this.promptForUserInput = true;
+      this.userInputPromptStr = htmlspecialchars(lastEntry.prompt);
+      this.curTrace.pop() // kill last entry so that it doesn't get displayed
+    }
+    else if (lastEntry.event == 'mouse_input') {
+      this.promptForMouseInput = true;
+      this.userInputPromptStr = htmlspecialchars(lastEntry.prompt);
+      this.curTrace.pop() // kill last entry so that it doesn't get displayed
+    }
+  }
+
+  this.curInstr = 0;
+
+  this.params = params;
+  if (!this.params) {
+    this.params = {}; // make it an empty object by default
+  }
+
+  var arrowLinesDef = (this.params.arrowLines !== undefined);
+  var highlightLinesDef = (this.params.highlightLines !== undefined);
+
+  if (!arrowLinesDef && !highlightLinesDef) {
+      // neither is set
+      this.params.highlightLines = false;
+      this.params.arrowLines = true;
+  }
+  else if (arrowLinesDef && highlightLinesDef) {
+      // both are set, so just use their set values
+  }
+  else if (arrowLinesDef) {
+      // only arrowLines set
+      this.params.highlightLines = !(this.params.arrowLines);
+  }
+  else {
+      // only highlightLines set
+      this.params.arrowLines = !(this.params.highlightLines);
+  }
+
+  this.compactFuncLabels = this.params.compactFuncLabels;
+
+  // audible!
+  if (this.params.pyCrazyMode) {
+      this.params.arrowLines = this.params.highlightLines = false;
+  }
+
+  if (this.params.visualizerIdOverride) {
+    this.visualizerID = this.params.visualizerIdOverride;
+  }
+  else {
+    // needs to be unique!
+    this.visualizerID = curVisualizerID;
+    curVisualizerID++;
+  }
+
+
+  this.leftGutterSvgInitialized = false;
+  this.arrowOffsetY = undefined;
+  this.codeRowHeight = undefined;
+
+  // avoid 'undefined' state
+  this.disableHeapNesting = (this.params.disableHeapNesting == true);
+  this.drawParentPointers = (this.params.drawParentPointers == true);
+  this.textualMemoryLabels = (this.params.textualMemoryLabels == true);
+  this.showOnlyOutputs = (this.params.showOnlyOutputs == true);
+  this.tabularView = (this.params.tabularView == true);
+  this.showAllFrameLabels = (this.params.showAllFrameLabels == true);
+
+  this.executeCodeWithRawInputFunc = this.params.executeCodeWithRawInputFunc;
+
+  // cool, we can create a separate jsPlumb instance for each visualization:
+  this.jsPlumbInstance = jsPlumb.getInstance({
+    Endpoint: ["Dot", {radius:3}],
+    EndpointStyles: [{fillStyle: connectorBaseColor}, {fillstyle: null} /* make right endpoint invisible */],
+    Anchors: ["RightMiddle", "LeftMiddle"],
+    PaintStyle: {lineWidth:1, strokeStyle: connectorBaseColor},
+
+    // bezier curve style:
+    //Connector: [ "Bezier", { curviness:15 }], /* too much 'curviness' causes lines to run together */
+    //Overlays: [[ "Arrow", { length: 14, width:10, foldback:0.55, location:0.35 }]],
+
+    // state machine curve style:
+    Connector: [ "StateMachine" ],
+    Overlays: [[ "Arrow", { length: 10, width:7, foldback:0.55, location:1 }]],
+    EndpointHoverStyles: [{fillStyle: connectorHighlightColor}, {fillstyle: null} /* make right endpoint invisible */],
+    HoverPaintStyle: {lineWidth: 1, strokeStyle: connectorHighlightColor},
+  });
+
+
+  // true iff trace ended prematurely since maximum instruction limit has
+  // been reached
+  var instrLimitReached = false;
+
+
+  // the root elements for jQuery and D3 selections, respectively.
+  // ALWAYS use these and never use naked $(__) or d3.select(__)
+  this.domRoot = $('#' + domRootID);
+  this.domRoot.data("vis",this);  // bnm store a reference to this as div data for use later.
+  this.domRootD3 = d3.select('#' + domRootID);
+
+  // stick a new div.ExecutionVisualizer within domRoot and make that
+  // the new domRoot:
+  this.domRoot.html('<div class="ExecutionVisualizer"></div>');
+
+  this.domRoot = this.domRoot.find('div.ExecutionVisualizer');
+  this.domRootD3 = this.domRootD3.select('div.ExecutionVisualizer');
+
+  // initialize in renderPyCodeOutput()
+  this.codeOutputLines = null;
+  this.breakpoints = null;           // set of execution points to set as breakpoints
+  this.sortedBreakpointsList = null; // sorted and synced with breakpointLines
+  this.hoverBreakpoints = null;      // set of breakpoints because we're HOVERING over a given line
+
+  this.classAttrsHidden = {}; // kludgy hack for 'show/hide attributes' for class objects
+
+  // API for adding a hook, created by David Pritchard
+  this.pytutor_hooks = {}; // keys, hook names; values, list of functions
+
+  if (this.params.lang === 'java') {
+    this.activateJavaFrontend(); // ohhhh yeah!
+  }
+
+  this.try_hook("end_constructor", {myViz:this});
+
+  this.hasRendered = false;
+
+  this.render(); // go for it!
+}
+
+
+/* API for adding a hook, created by David Pritchard
+   https://github.com/daveagp
+
+[this documentation is a bit deprecated since Philip made try_hook a
+method of ExecutionVisualizer, but the general ideas remains]
+
+ An external user should call
+add_pytutor_hook("hook_name_here", function(args) {...})
+ args will be a javascript object with several named properties;
+ this is meant to be similar to Python's keyword arguments.
+
+ The hooked function should return an array whose first element is a boolean:
+ true if it completely handled the situation (no further hooks
+ nor the base function should be called); false otherwise (wasn't handled).
+ If the hook semantically represents a function that returns something,
+ the second value of the returned array is that semantic return value.
+
+ E.g. for the Java visualizer a simplified version of a hook we use is:
+
+add_pytutor_hook(
+  "isPrimitiveType",
+  function(args) {
+    var obj = args.obj; // unpack
+    if (obj instanceof Array && obj[0] == "CHAR-LITERAL")
+      return [true, true]; // yes we handled it, yes it's primitive
+    return [false]; // didn't handle it, let someone else
+  });
+
+ Hook callbacks can return false or undefined (i.e. no return
+ value) in lieu of [false].
+
+ NB: If multiple functions are added to a hook, the oldest goes first.
+*/
+ExecutionVisualizer.prototype.add_pytutor_hook = function(hook_name, func) {
+  if (this.pytutor_hooks[hook_name])
+    this.pytutor_hooks[hook_name].push(func);
+  else
+    this.pytutor_hooks[hook_name] = [func];
+}
+
+/*
+
+[this documentation is a bit deprecated since Philip made try_hook a
+method of ExecutionVisualizer, but the general ideas remains]
+
+try_hook(hook_name, args): how the internal codebase invokes a hook.
+ args will be a javascript object with several named properties;
+ this is meant to be similar to Python's keyword arguments.
+ E.g.,
+
+function isPrimitiveType(obj) {
+  var hook_result = try_hook("isPrimitiveType", {obj:obj});
+  if (hook_result[0]) return hook_result[1];
+  // go on as normal if the hook didn't handle it
+
+ Although add_pytutor_hook allows the hooked function to
+ return false or undefined, try_hook will always return
+ something with the strict format [false], [true] or [true, ...].
+*/
+ExecutionVisualizer.prototype.try_hook = function(hook_name, args) {
+  if (this.pytutor_hooks[hook_name]) {
+    for (var i=0; i<this.pytutor_hooks[hook_name].length; i++) {
+
+      // apply w/o "this", and pack sole arg into array as required by apply
+      var handled_and_result
+        = this.pytutor_hooks[hook_name][i].apply(null, [args]);
+
+      if (handled_and_result && handled_and_result[0])
+        return handled_and_result;
+    }
+  }
+  return [false];
+}
+
+
+// for managing state related to pesky jsPlumb connectors, need to reset
+// before every call to renderDataStructures, or else all hell breaks
+// loose. yeah, this is kludgy and stateful, but at least all of the
+// relevant state gets shoved into one unified place
+ExecutionVisualizer.prototype.resetJsPlumbManager = function() {
+  this.jsPlumbManager = {
+    heap_pointer_src_id: 1, // increment this to be unique for each heap_pointer_src_*
+
+    // Key:   CSS ID of the div element representing the stack frame variable
+    //        (for stack->heap connections) or heap object (for heap->heap connections)
+    //        the format is: '<this.visualizerID>__heap_pointer_src_<src id>'
+    // Value: CSS ID of the div element representing the value rendered in the heap
+    //        (the format is given by generateHeapObjID())
+    //
+    // The reason we need to prepend this.visualizerID is because jsPlumb needs
+    // GLOBALLY UNIQUE IDs for use as connector endpoints.
+    //
+    // TODO: jsPlumb might be able to directly take DOM elements rather
+    // than IDs, which makes the above point moot. But let's just stick
+    // with this for now until I want to majorly refactor :)
+
+    // the only elements in these sets are NEW elements to be rendered in this
+    // particular call to renderDataStructures.
+    connectionEndpointIDs: d3.map(),
+    heapConnectionEndpointIDs: d3.map(), // subset of connectionEndpointIDs for heap->heap connections
+    // analogous to connectionEndpointIDs, except for environment parent pointers
+    parentPointerConnectionEndpointIDs: d3.map(),
+
+    renderedHeapObjectIDs: d3.map(), // format given by generateHeapObjID()
+  };
+}
+
+
+// create a unique ID, which is often necessary so that jsPlumb doesn't get confused
+// due to multiple ExecutionVisualizer instances being displayed simultaneously
+ExecutionVisualizer.prototype.generateID = function(original_id) {
+  // (it's safer to start names with a letter rather than a number)
+  return 'v' + this.visualizerID + '__' + original_id;
+}
+
+// create a unique CSS ID for a heap object, which should include both
+// its ID and the current step number. this is necessary if we want to
+// display the same heap object at multiple execution steps.
+ExecutionVisualizer.prototype.generateHeapObjID = function(objID, stepNum) {
+  return this.generateID('heap_object_' + objID + '_s' + stepNum);
+}
+
+
+ExecutionVisualizer.prototype.render = function() {
+  if (this.hasRendered) {
+    alert('ERROR: You should only call render() ONCE on an ExecutionVisualizer object.');
+    return;
+  }
+
+
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+  var codeDisplayHTML =
+    '<div id="codeDisplayDiv">\
+       <div id="langDisplayDiv"></div>\
+       <div id="pyCodeOutputDiv"/>\
+       <div id="editCodeLinkDiv"><a id="editBtn">Edit code</a></div>\
+       <div id="executionSlider"/>\
+       <div id="vcrControls">\
+         <button id="jmpFirstInstr", type="button">&lt;&lt; First</button>\
+         <button id="jmpStepBack", type="button">&lt; Back</button>\
+         <span id="curInstr">Step ? of ?</span>\
+         <button id="jmpStepFwd", type="button">Forward &gt;</button>\
+         <button id="jmpLastInstr", type="button">Last &gt;&gt;</button>\
+       </div>\
+       <div id="rawUserInputDiv">\
+         <span id="userInputPromptStr"/>\
+         <input type="text" id="raw_input_textbox" size="30"/>\
+         <button id="raw_input_submit_btn">Submit</button>\
+       </div>\
+       <div id="errorOutput"/>\
+       <div id="legendDiv"/>\
+       <div id="stepAnnotationDiv">\
+         <textarea class="annotationText" id="stepAnnotationEditor" cols="60" rows="3"></textarea>\
+         <div class="annotationText" id="stepAnnotationViewer"></div>\
+       </div>\
+       <div id="annotateLinkDiv"><button id="annotateBtn" type="button">Annotate this step</button></div>\
+     </div>';
+
+  var outputsHTML =
+    '<div id="htmlOutputDiv"></div>\
+     <div id="progOutputs">\
+       Program output:<br/>\
+       <textarea id="pyStdout" cols="50" rows="10" wrap="off" readonly></textarea>\
+     </div>';
+
+  var codeVizHTML =
+    '<div id="dataViz">\
+       <table id="stackHeapTable">\
+         <tr>\
+           <td id="stack_td">\
+             <div id="globals_area">\
+               <div id="stackHeader">Frames</div>\
+             </div>\
+             <div id="stack"></div>\
+           </td>\
+           <td id="heap_td">\
+             <div id="heap">\
+               <div id="heapHeader">Objects</div>\
+             </div>\
+           </td>\
+         </tr>\
+       </table>\
+     </div>';
+
+  // override
+  if (myViz.tabularView) {
+    codeVizHTML = '<div id="optTabularView"></div>';
+  }
+
+  var vizHeaderHTML =
+    '<div id="vizHeader">\
+       <textarea class="vizTitleText" id="vizTitleEditor" cols="60" rows="1"></textarea>\
+       <div class="vizTitleText" id="vizTitleViewer"></div>\
+       <textarea class="vizDescriptionText" id="vizDescriptionEditor" cols="75" rows="2"></textarea>\
+       <div class="vizDescriptionText" id="vizDescriptionViewer"></div>\
+    </div>';
+
+  if (this.params.verticalStack) {
+    this.domRoot.html(vizHeaderHTML + '<table border="0" class="visualizer"><tr><td class="vizLayoutTd" id="vizLayoutTdFirst"">' +
+                      codeDisplayHTML + '</td></tr><tr><td class="vizLayoutTd" id="vizLayoutTdSecond">' +
+                      codeVizHTML + '</td></tr></table>');
+  }
+  else {
+    this.domRoot.html(vizHeaderHTML + '<table border="0" class="visualizer"><tr><td class="vizLayoutTd" id="vizLayoutTdFirst">' +
+                      codeDisplayHTML + '</td><td class="vizLayoutTd" id="vizLayoutTdSecond">' +
+                      codeVizHTML + '</td></tr></table>');
+  }
+
+  if (this.showOnlyOutputs) {
+    myViz.domRoot.find('#dataViz').hide();
+    this.domRoot.find('#vizLayoutTdSecond').append(outputsHTML);
+
+    if (this.params.verticalStack) {
+      this.domRoot.find('#vizLayoutTdSecond').css('padding-top', '25px');
+    }
+    else {
+      this.domRoot.find('#vizLayoutTdSecond').css('padding-left', '25px');
+    }
+  }
+  else {
+    this.domRoot.find('#vizLayoutTdFirst').append(outputsHTML);
+  }
+
+  if (this.params.arrowLines) {
+      this.domRoot.find('#legendDiv')
+          .append('<svg id="prevLegendArrowSVG"/> line that has just executed')
+          .append('<p style="margin-top: 4px"><svg id="curLegendArrowSVG"/> next line to execute</p>');
+      
+      myViz.domRootD3.select('svg#prevLegendArrowSVG')
+          .append('polygon')
+          .attr('points', SVG_ARROW_POLYGON)
+          .attr('fill', lightArrowColor);
+      
+      myViz.domRootD3.select('svg#curLegendArrowSVG')
+          .append('polygon')
+          .attr('points', SVG_ARROW_POLYGON)
+          .attr('fill', darkArrowColor);
+  }
+  else if (this.params.highlightLines) {
+      myViz.domRoot.find('#legendDiv')
+          .append('<span class="highlight-legend highlight-prev">line that has just executed</span> ')
+          .append('<span class="highlight-legend highlight-cur">next line to execute</span>')
+  }
+  else if (this.params.pyCrazyMode) {
+      myViz.domRoot.find('#legendDiv')
+          .append('<a href="https://github.com/pgbovine/Py2crazy">Py2crazy</a> mode!')
+          .append(' Stepping through (roughly) each executed expression. Color codes:<p/>')
+          .append('<span class="pycrazy-highlight-prev">expression that just executed</span><br/>')
+          .append('<span class="pycrazy-highlight-cur">next expression to execute</span>');
+  }
+
+
+  if (this.params.editCodeBaseURL) {
+    // kinda kludgy
+    var pyVer = '2'; // default
+    if (this.params.lang === 'js') {
+      pyVer = 'js';
+    } else if (this.params.lang === 'ts') {
+      pyVer = 'ts';
+    } else if (this.params.lang === 'java') {
+      pyVer = 'java';
+    } else if (this.params.lang === 'py3') {
+      pyVer = '3';
+    }
+
+    var urlStr = $.param.fragment(this.params.editCodeBaseURL,
+                                  {code: this.curInputCode, py: pyVer},
+                                  2);
+    this.domRoot.find('#editBtn').attr('href', urlStr);
+  }
+  else {
+    this.domRoot.find('#editCodeLinkDiv').hide(); // just hide for simplicity!
+    this.domRoot.find('#editBtn').attr('href', "#");
+    this.domRoot.find('#editBtn').click(function(){return false;}); // DISABLE the link!
+  }
+
+  if (this.params.lang !== undefined) {
+    if (this.params.lang === 'js') {
+      this.domRoot.find('#langDisplayDiv').html('JavaScript');
+    } else if (this.params.lang === 'ts') {
+      this.domRoot.find('#langDisplayDiv').html('TypeScript');
+    } else if (this.params.lang === 'ruby') {
+      this.domRoot.find('#langDisplayDiv').html('Ruby');
+    } else if (this.params.lang === 'java') {
+      this.domRoot.find('#langDisplayDiv').html('Java');
+    } else if (this.params.lang === 'py2') {
+      this.domRoot.find('#langDisplayDiv').html('Python 2.7');
+    } else if (this.params.lang === 'py3') {
+      this.domRoot.find('#langDisplayDiv').html('Python 3.3');
+    } else {
+      this.domRoot.find('#langDisplayDiv').hide();
+    }
+  }
+
+  if (this.params.allowEditAnnotations !== undefined) {
+    this.allowEditAnnotations = this.params.allowEditAnnotations;
+  }
+  else {
+    this.allowEditAnnotations = false;
+  }
+
+  if (this.params.pyCrazyMode !== undefined) {
+    this.pyCrazyMode = this.params.pyCrazyMode;
+  }
+  else {
+    this.pyCrazyMode = false;
+  }
+
+  this.domRoot.find('#stepAnnotationEditor').hide();
+
+  if (this.params.embeddedMode) {
+    this.params.hideOutput = true; // put this before hideOutput handler
+
+    // don't override if they've already been set!
+    if (this.params.codeDivWidth === undefined) {
+      this.params.codeDivWidth = this.DEFAULT_EMBEDDED_CODE_DIV_WIDTH;
+    }
+
+    if (this.params.codeDivHeight === undefined) {
+      this.params.codeDivHeight = this.DEFAULT_EMBEDDED_CODE_DIV_HEIGHT;
+    }
+    
+    this.allowEditAnnotations = false;
+
+    // add an extra label to link back to the main site, so that viewers
+    // on the embedded page know that they're seeing an OPT visualization
+    this.domRoot.find('#codeDisplayDiv').append('<div style="font-size: 8pt; margin-bottom: 20px;">Visualized using <a href="http://pythontutor.com" target="_blank" style="color: #3D58A2;">Online Python Tutor</a> by <a href="http://www.pgbovine.net/" target="_blank" style="color: #3D58A2;">Philip Guo</a></div>');
+  }
+
+  myViz.editAnnotationMode = false;
+
+  if (this.allowEditAnnotations) {
+    var ab = this.domRoot.find('#annotateBtn');
+
+    ab.click(function() {
+      if (myViz.editAnnotationMode) {
+        myViz.enterViewAnnotationsMode();
+
+        myViz.domRoot.find("#jmpFirstInstr,#jmpLastInstr,#jmpStepBack,#jmpStepFwd,#executionSlider,#editCodeLinkDiv,#stepAnnotationViewer").show();
+        myViz.domRoot.find('#stepAnnotationEditor').hide();
+        ab.html('Annotate this step');
+      }
+      else {
+        myViz.enterEditAnnotationsMode();
+
+        myViz.domRoot.find("#jmpFirstInstr,#jmpLastInstr,#jmpStepBack,#jmpStepFwd,#executionSlider,#editCodeLinkDiv,#stepAnnotationViewer").hide();
+        myViz.domRoot.find('#stepAnnotationEditor').show();
+        ab.html('Done annotating');
+      }
+    });
+  }
+  else {
+    this.domRoot.find('#annotateBtn').hide();
+  }
+
+  
+  // not enough room for these extra buttons ...
+  if (this.params.codeDivWidth &&
+      this.params.codeDivWidth < 470) {
+    this.domRoot.find('#jmpFirstInstr').hide();
+    this.domRoot.find('#jmpLastInstr').hide();
+  }
+
+
+  if (this.params.codeDivWidth) {
+    // set width once
+    this.domRoot.find('#codeDisplayDiv').width(this.params.codeDivWidth);
+    // it will propagate to the slider
+
+    this.domRoot.find("#pyStdout").css("width", this.params.codeDivWidth - 20 /* wee tweaks */);
+  }
+
+  // enable left-right draggable pane resizer (originally from David Pritchard)
+  this.domRoot.find('#codeDisplayDiv').resizable({
+    handles: "e", 
+    minWidth: 100, //otherwise looks really goofy
+    resize: function(event, ui) { // old name: syncStdoutWidth, now not appropriate
+      // resize stdout box in unison
+      myViz.domRoot.find("#pyStdout").css("width", $(this).width() - 20 /* wee tweaks */);
+
+      myViz.domRoot.find("#codeDisplayDiv").css("height", "auto"); // redetermine height if necessary
+      if (myViz.params.updateOutputCallback) // report size change
+        myViz.params.updateOutputCallback(this);
+    }});
+
+  if (this.params.codeDivHeight) {
+    this.domRoot.find('#pyCodeOutputDiv')
+      .css('max-height', this.params.codeDivHeight + 'px');
+  }
+
+
+  // create a persistent globals frame
+  // (note that we need to keep #globals_area separate from #stack for d3 to work its magic)
+  this.domRoot.find("#globals_area").append('<div class="stackFrame" id="'
+    + myViz.generateID('globals') + '"><div id="' + myViz.generateID('globals_header')
+    + '" class="stackFrameHeader">' + this.getRealLabel('Global frame') + '</div><table class="stackFrameVarTable" id="'
+    + myViz.generateID('global_table') + '"></table></div>');
+
+
+  if (this.params.hideOutput) {
+    this.domRoot.find('#progOutputs').hide();
+  }
+
+  this.domRoot.find("#jmpFirstInstr").click(function() {
+    myViz.renderStep(0);
+  });
+
+  this.domRoot.find("#jmpLastInstr").click(function() {
+    myViz.renderStep(myViz.curTrace.length - 1);
+  });
+
+  this.domRoot.find("#jmpStepBack").click(function() {
+    myViz.stepBack();
+  });
+
+  this.domRoot.find("#jmpStepFwd").click(function() {
+    myViz.stepForward();
+  });
+
+  // disable controls initially ...
+  this.domRoot.find("#vcrControls #jmpFirstInstr").attr("disabled", true);
+  this.domRoot.find("#vcrControls #jmpStepBack").attr("disabled", true);
+  this.domRoot.find("#vcrControls #jmpStepFwd").attr("disabled", true);
+  this.domRoot.find("#vcrControls #jmpLastInstr").attr("disabled", true);
+
+
+
+  // must postprocess curTrace prior to running precomputeCurTraceLayouts() ...
+  var lastEntry = this.curTrace[this.curTrace.length - 1];
+
+  this.instrLimitReached = (lastEntry.event == 'instruction_limit_reached');
+
+  if (this.instrLimitReached) {
+    this.curTrace.pop() // kill last entry
+    var warningMsg = lastEntry.exception_msg;
+    myViz.domRoot.find("#errorOutput").html(htmlspecialchars(warningMsg));
+    myViz.domRoot.find("#errorOutput").show();
+  }
+
+  // set up slider after postprocessing curTrace
+
+  var sliderDiv = this.domRoot.find('#executionSlider');
+  sliderDiv.slider({min: 0, max: this.curTrace.length - 1, step: 1});
+  //disable keyboard actions on the slider itself (to prevent double-firing of events)
+  sliderDiv.find(".ui-slider-handle").unbind('keydown');
+  // make skinnier and taller
+  sliderDiv.find(".ui-slider-handle").css('width', '0.8em');
+  sliderDiv.find(".ui-slider-handle").css('height', '1.4em');
+  this.domRoot.find(".ui-widget-content").css('font-size', '0.9em');
+
+  this.domRoot.find('#executionSlider').bind('slide', function(evt, ui) {
+    // this is SUPER subtle. if this value was changed programmatically,
+    // then evt.originalEvent will be undefined. however, if this value
+    // was changed by a user-initiated event, then this code should be
+    // executed ...
+    if (evt.originalEvent) {
+      myViz.renderStep(ui.value);
+    }
+  });
+
+  if (this.params.startingInstruction) {
+    // weird special case for something like:
+    // e=raw_input(raw_input("Enter something:"))
+    if (this.params.startingInstruction == this.curTrace.length) {
+      this.params.startingInstruction--;
+    }
+
+    assert(0 <= this.params.startingInstruction &&
+           this.params.startingInstruction < this.curTrace.length);
+    this.curInstr = this.params.startingInstruction;
+  }
+
+  if (this.params.jumpToEnd) {
+    this.curInstr = this.curTrace.length - 1;
+  }
+
+  if (this.params.hideCode) {
+    this.domRoot.find('#vizLayoutTdFirst').hide(); // gigantic hack!
+  }
+
+  this.try_hook("end_render", {myViz:this});
+
+  this.precomputeCurTraceLayouts();
+
+  if (!this.params.hideCode) {
+    this.renderPyCodeOutput();
+  }
+
+  // EXPERIMENTAL!
+  if (this.tabularView) {
+    this.renderTabularView();
+
+    // scroll vizLayoutTdFirst down to always align with the vertical
+    // scrolling ...
+    $(window).scroll(function() {
+      var codePane = myViz.domRoot.find('#vizLayoutTdFirst');
+      var docScrollTop = $(document).scrollTop();
+      var offset = codePane.offset().top;
+      var delta = docScrollTop - offset;
+      if (delta < 0) {
+        delta = 0;
+      }
+
+      // don't scroll past the bottom of the optTabularView table:
+      var optTable = myViz.domRoot.find('#optTabularView');
+      var optTableBottom = optTable.height() + optTable.offset().top;
+      var codeDisplayHeight = myViz.domRoot.find('#codeDisplayDiv').height();
+      if (delta - offset < optTableBottom - codeDisplayHeight) {
+        codePane.css('padding-top', delta);
+      }
+    });
+  }
+
+
+  var ruiDiv = myViz.domRoot.find('#rawUserInputDiv');
+  ruiDiv.find('#userInputPromptStr').html(myViz.userInputPromptStr);
+  ruiDiv.find('#raw_input_submit_btn').click(function() {
+    var userInput = ruiDiv.find('#raw_input_textbox').val();
+    // advance instruction count by 1 to get to the NEXT instruction
+    myViz.executeCodeWithRawInputFunc(userInput, myViz.curInstr + 1);
+  });
+
+
+  this.updateOutput();
+
+  this.hasRendered = true;
+}
+
+
+ExecutionVisualizer.prototype.showVizHeaderViewMode = function() {
+  var titleVal = this.domRoot.find('#vizTitleEditor').val().trim();
+  var  descVal = this.domRoot.find('#vizDescriptionEditor').val().trim();
+
+  this.domRoot.find('#vizTitleEditor,#vizDescriptionEditor').hide();
+
+  if (!titleVal && !descVal) {
+    this.domRoot.find('#vizHeader').hide();
+  }
+  else {
+    this.domRoot.find('#vizHeader,#vizTitleViewer,#vizDescriptionViewer').show();
+    if (titleVal) {
+      this.domRoot.find('#vizTitleViewer').html(htmlsanitize(titleVal)); // help prevent HTML/JS injection attacks
+    }
+
+    if (descVal) {
+      this.domRoot.find('#vizDescriptionViewer').html(htmlsanitize(descVal)); // help prevent HTML/JS injection attacks
+    }
+  }
+}
+
+ExecutionVisualizer.prototype.showVizHeaderEditMode = function() {
+  this.domRoot.find('#vizHeader').show();
+
+  this.domRoot.find('#vizTitleViewer,#vizDescriptionViewer').hide();
+  this.domRoot.find('#vizTitleEditor,#vizDescriptionEditor').show();
+}
+
+
+ExecutionVisualizer.prototype.destroyAllAnnotationBubbles = function() {
+  var myViz = this;
+
+  // hopefully destroys all old bubbles and reclaims their memory
+  if (myViz.allAnnotationBubbles) {
+    $.each(myViz.allAnnotationBubbles, function(i, e) {
+      e.destroyQTip();
+    });
+  }
+
+  // remove this handler as well!
+  this.domRoot.find('#pyCodeOutputDiv').unbind('scroll');
+
+  myViz.allAnnotationBubbles = null;
+}
+
+ExecutionVisualizer.prototype.initStepAnnotation = function() {
+  var curEntry = this.curTrace[this.curInstr];
+  if (curEntry.stepAnnotation) {
+    this.domRoot.find("#stepAnnotationViewer").html(htmlsanitize(curEntry.stepAnnotation)); // help prevent HTML/JS injection attacks
+    this.domRoot.find("#stepAnnotationEditor").val(curEntry.stepAnnotation);
+  }
+  else {
+    this.domRoot.find("#stepAnnotationViewer").html('');
+    this.domRoot.find("#stepAnnotationEditor").val('');
+  }
+}
+
+ExecutionVisualizer.prototype.initAllAnnotationBubbles = function() {
+  var myViz = this;
+
+  // TODO: check for memory leaks
+  //console.log('initAllAnnotationBubbles');
+
+  myViz.destroyAllAnnotationBubbles();
+
+  var codelineIDs = [];
+  $.each(this.domRoot.find('#pyCodeOutput .cod'), function(i, e) {
+    codelineIDs.push($(e).attr('id'));
+  });
+
+  var heapObjectIDs = [];
+  $.each(this.domRoot.find('.heapObject'), function(i, e) {
+    heapObjectIDs.push($(e).attr('id'));
+  });
+
+  var variableIDs = [];
+  $.each(this.domRoot.find('.variableTr'), function(i, e) {
+    variableIDs.push($(e).attr('id'));
+  });
+
+  var frameIDs = [];
+  $.each(this.domRoot.find('.stackFrame'), function(i, e) {
+    frameIDs.push($(e).attr('id'));
+  });
+
+  myViz.allAnnotationBubbles = [];
+
+  $.each(codelineIDs, function(i,e) {myViz.allAnnotationBubbles.push(new AnnotationBubble(myViz, 'codeline', e));});
+  $.each(heapObjectIDs, function(i,e) {myViz.allAnnotationBubbles.push(new AnnotationBubble(myViz, 'object', e));});
+  $.each(variableIDs, function(i,e) {myViz.allAnnotationBubbles.push(new AnnotationBubble(myViz, 'variable', e));});
+  $.each(frameIDs, function(i,e) {myViz.allAnnotationBubbles.push(new AnnotationBubble(myViz, 'frame', e));});
+
+
+  this.domRoot.find('#pyCodeOutputDiv').scroll(function() {
+    $.each(myViz.allAnnotationBubbles, function(i, e) {
+      if (e.type == 'codeline') {
+        e.redrawCodelineBubble();
+      }
+    });
+  });
+
+  //console.log('initAllAnnotationBubbles', myViz.allAnnotationBubbles.length);
+}
+
+
+ExecutionVisualizer.prototype.enterViewAnnotationsMode = function() {
+  this.editAnnotationMode = false;
+  var curEntry = this.curTrace[this.curInstr];
+
+  // TODO: check for memory leaks!!!
+  var myViz = this;
+
+  if (!myViz.allAnnotationBubbles) {
+    if (curEntry.bubbleAnnotations) {
+      // If there is an existing annotations object, then initiate all annotations bubbles
+      // and display them in 'View' mode
+      myViz.initAllAnnotationBubbles();
+
+      $.each(myViz.allAnnotationBubbles, function(i, e) {
+        var txt = curEntry.bubbleAnnotations[e.domID];
+        if (txt) {
+          e.preseedText(txt);
+        }
+      });
+    }
+  }
+
+
+  if (myViz.allAnnotationBubbles) {
+    var curAnnotations = {};
+
+    $.each(myViz.allAnnotationBubbles, function(i, e) {
+      e.enterViewMode();
+
+      if (e.text) {
+        curAnnotations[e.domID] = e.text;
+      }
+    });
+
+    // Save annotations directly into the current trace entry as an 'annotations' object
+    // directly mapping domID -> text.
+    //
+    // NB: This scheme can break if the functions for generating domIDs are altered.
+    curEntry.bubbleAnnotations = curAnnotations;
+  }
+
+  var stepAnnotationEditorVal = myViz.domRoot.find("#stepAnnotationEditor").val().trim();
+  if (stepAnnotationEditorVal) {
+    curEntry.stepAnnotation = stepAnnotationEditorVal;
+  }
+  else {
+    delete curEntry.stepAnnotation; // go as far as to DELETE this field entirely
+  }
+
+  myViz.initStepAnnotation();
+
+  myViz.showVizHeaderViewMode();
+
+  // redraw all connectors and bubbles in new vertical position ..
+  myViz.redrawConnectors();
+  myViz.redrawAllAnnotationBubbles();
+}
+
+ExecutionVisualizer.prototype.enterEditAnnotationsMode = function() {
+  this.editAnnotationMode = true;
+
+  // TODO: check for memory leaks!!!
+  var myViz = this;
+
+  var curEntry = this.curTrace[this.curInstr];
+
+  if (!myViz.allAnnotationBubbles) {
+    myViz.initAllAnnotationBubbles();
+  }
+
+  $.each(myViz.allAnnotationBubbles, function(i, e) {
+    e.enterEditMode();
+  });
+
+
+  if (curEntry.stepAnnotation) {
+    myViz.domRoot.find("#stepAnnotationEditor").val(curEntry.stepAnnotation);
+  }
+  else {
+    myViz.domRoot.find("#stepAnnotationEditor").val('');
+  }
+
+
+  myViz.showVizHeaderEditMode();
+
+  // redraw all connectors and bubbles in new vertical position ..
+  myViz.redrawConnectors();
+  myViz.redrawAllAnnotationBubbles();
+}
+
+
+ExecutionVisualizer.prototype.redrawAllAnnotationBubbles = function() {
+  if (this.allAnnotationBubbles) {
+    $.each(this.allAnnotationBubbles, function(i, e) {
+      e.redrawBubble();
+    });
+  }
+}
+
+
+// find the previous/next breakpoint to c or return -1 if it doesn't exist
+ExecutionVisualizer.prototype.findPrevBreakpoint = function() {
+  var myViz = this;
+  var c = myViz.curInstr;
+
+  if (myViz.sortedBreakpointsList.length == 0) {
+    return -1;
+  }
+  else {
+    for (var i = 1; i < myViz.sortedBreakpointsList.length; i++) {
+      var prev = myViz.sortedBreakpointsList[i-1];
+      var cur = myViz.sortedBreakpointsList[i];
+      if (c <= prev)
+        return -1;
+      if (cur >= c)
+        return prev;
+    }
+
+    // final edge case:
+    var lastElt = myViz.sortedBreakpointsList[myViz.sortedBreakpointsList.length - 1];
+    return (lastElt < c) ? lastElt : -1;
+  }
+}
+
+ExecutionVisualizer.prototype.findNextBreakpoint = function() {
+  var myViz = this;
+  var c = myViz.curInstr;
+
+  if (myViz.sortedBreakpointsList.length == 0) {
+    return -1;
+  }
+  // usability hack: if you're currently on a breakpoint, then
+  // single-step forward to the next execution point, NOT the next
+  // breakpoint. it's often useful to see what happens when the line
+  // at a breakpoint executes.
+  else if ($.inArray(c, myViz.sortedBreakpointsList) >= 0) {
+    return c + 1;
+  }
+  else {
+    for (var i = 0; i < myViz.sortedBreakpointsList.length - 1; i++) {
+      var cur = myViz.sortedBreakpointsList[i];
+      var next = myViz.sortedBreakpointsList[i+1];
+      if (c < cur)
+        return cur;
+      if (cur <= c && c < next) // subtle
+        return next;
+    }
+
+    // final edge case:
+    var lastElt = myViz.sortedBreakpointsList[myViz.sortedBreakpointsList.length - 1];
+    return (lastElt > c) ? lastElt : -1;
+  }
+}
+
+
+// returns true if action successfully taken
+ExecutionVisualizer.prototype.stepForward = function() {
+  var myViz = this;
+
+  if (myViz.editAnnotationMode) {
+    return;
+  }
+
+  if (myViz.curInstr < myViz.curTrace.length - 1) {
+    // if there is a next breakpoint, then jump to it ...
+    if (myViz.sortedBreakpointsList.length > 0) {
+      var nextBreakpoint = myViz.findNextBreakpoint();
+      if (nextBreakpoint != -1)
+        myViz.curInstr = nextBreakpoint;
+      else
+        myViz.curInstr += 1; // prevent "getting stuck" on a solitary breakpoint
+    }
+    else {
+      myViz.curInstr += 1;
+    }
+    myViz.updateOutput(true);
+    return true;
+  }
+
+  return false;
+}
+
+// returns true if action successfully taken
+ExecutionVisualizer.prototype.stepBack = function() {
+  var myViz = this;
+
+  if (myViz.editAnnotationMode) {
+    return;
+  }
+
+  if (myViz.curInstr > 0) {
+    // if there is a prev breakpoint, then jump to it ...
+    if (myViz.sortedBreakpointsList.length > 0) {
+      var prevBreakpoint = myViz.findPrevBreakpoint();
+      if (prevBreakpoint != -1)
+        myViz.curInstr = prevBreakpoint;
+      else
+        myViz.curInstr -= 1; // prevent "getting stuck" on a solitary breakpoint
+    }
+    else {
+      myViz.curInstr -= 1;
+    }
+    myViz.updateOutput();
+    return true;
+  }
+
+  return false;
+}
+
+
+ExecutionVisualizer.prototype.renderPyCodeOutput = function() {
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+
+  // initialize!
+  this.breakpoints = d3.map();
+  this.sortedBreakpointsList = [];
+  this.hoverBreakpoints = d3.map();
+
+  // an array of objects with the following fields:
+  //   'text' - the text of the line of code
+  //   'lineNumber' - one-indexed (always the array index + 1)
+  //   'executionPoints' - an ordered array of zero-indexed execution points where this line was executed
+  //   'breakpointHere' - has a breakpoint been set here?
+  this.codeOutputLines = [];
+
+
+  function renderSliderBreakpoints() {
+    myViz.domRoot.find("#executionSliderFooter").empty();
+
+    // I originally didn't want to delete and re-create this overlay every time,
+    // but if I don't do so, there are weird flickering artifacts with clearing
+    // the SVG container; so it's best to just delete and re-create the container each time
+    var sliderOverlay = myViz.domRootD3.select('#executionSliderFooter')
+      .append('svg')
+      .attr('id', 'sliderOverlay')
+      .attr('width', myViz.domRoot.find('#executionSlider').width())
+      .attr('height', 12);
+
+    var xrange = d3.scale.linear()
+      .domain([0, myViz.curTrace.length - 1])
+      .range([0, myViz.domRoot.find('#executionSlider').width()]);
+
+    sliderOverlay.selectAll('rect')
+      .data(myViz.sortedBreakpointsList)
+      .enter().append('rect')
+      .attr('x', function(d, i) {
+        // make the edge cases look decent
+        if (d == 0) {
+          return 0;
+        }
+        else {
+          return xrange(d) - 3;
+        }
+      })
+      .attr('y', 0)
+      .attr('width', 2)
+      .attr('height', 12)
+      .style('fill', function(d) {
+         if (myViz.hoverBreakpoints.has(d)) {
+           return hoverBreakpointColor;
+         }
+         else {
+           return breakpointColor;
+         }
+      });
+  }
+
+  function _getSortedBreakpointsList() {
+    var ret = [];
+    myViz.breakpoints.forEach(function(k, v) {
+      ret.push(Number(k)); // these should be NUMBERS, not strings
+    });
+    ret.sort(function(x,y){return x-y}); // WTF, javascript sort is lexicographic by default!
+    return ret;
+  }
+
+  function addToBreakpoints(executionPoints) {
+    $.each(executionPoints, function(i, ep) {
+      myViz.breakpoints.set(ep, 1);
+    });
+    myViz.sortedBreakpointsList = _getSortedBreakpointsList();
+  }
+
+  function removeFromBreakpoints(executionPoints) {
+    $.each(executionPoints, function(i, ep) {
+      myViz.breakpoints.remove(ep);
+    });
+    myViz.sortedBreakpointsList = _getSortedBreakpointsList();
+  }
+
+
+  function setHoverBreakpoint(t) {
+    var exePts = d3.select(t).datum().executionPoints;
+
+    // don't do anything if exePts is empty
+    // (i.e., this line was never executed)
+    if (!exePts || exePts.length == 0) {
+      return;
+    }
+
+    myViz.hoverBreakpoints = d3.map();
+    $.each(exePts, function(i, ep) {
+      // don't add redundant entries
+      if (!myViz.breakpoints.has(ep)) {
+        myViz.hoverBreakpoints.set(ep, 1);
+      }
+    });
+
+    addToBreakpoints(exePts);
+    renderSliderBreakpoints();
+  }
+
+
+  function setBreakpoint(t) {
+    var exePts = d3.select(t).datum().executionPoints;
+
+    // don't do anything if exePts is empty
+    // (i.e., this line was never executed)
+    if (!exePts || exePts.length == 0) {
+      return;
+    }
+
+    addToBreakpoints(exePts);
+
+    // remove from hoverBreakpoints so that slider display immediately changes color
+    $.each(exePts, function(i, ep) {
+      myViz.hoverBreakpoints.remove(ep);
+    });
+
+    d3.select(t.parentNode).select('td.lineNo').style('color', breakpointColor);
+    d3.select(t.parentNode).select('td.lineNo').style('font-weight', 'bold');
+
+    renderSliderBreakpoints();
+  }
+
+  function unsetBreakpoint(t) {
+    var exePts = d3.select(t).datum().executionPoints;
+
+    // don't do anything if exePts is empty
+    // (i.e., this line was never executed)
+    if (!exePts || exePts.length == 0) {
+      return;
+    }
+
+    removeFromBreakpoints(exePts);
+
+    var lineNo = d3.select(t).datum().lineNumber;
+
+    renderSliderBreakpoints();
+  }
+
+  var lines = this.curInputCode.split('\n');
+
+  for (var i = 0; i < lines.length; i++) {
+    var cod = lines[i];
+
+    var n = {};
+    n.text = cod;
+    n.lineNumber = i + 1;
+    n.executionPoints = [];
+    n.breakpointHere = false;
+
+    $.each(this.curTrace, function(j, elt) {
+      if (elt.line == n.lineNumber) {
+        n.executionPoints.push(j);
+      }
+    });
+
+ 
+    // if there is a comment containing 'breakpoint' and this line was actually executed,
+    // then set a breakpoint on this line
+    var breakpointInComment = false;
+    var toks = cod.split('#');
+    for (var j = 1 /* start at index 1, not 0 */; j < toks.length; j++) {
+      if (toks[j].indexOf('breakpoint') != -1) {
+        breakpointInComment = true;
+      }
+    }
+
+    if (breakpointInComment && n.executionPoints.length > 0) {
+      n.breakpointHere = true;
+      addToBreakpoints(n.executionPoints);
+    }
+
+    this.codeOutputLines.push(n);
+  }
+
+
+  myViz.domRoot.find('#pyCodeOutputDiv').empty();
+
+  // maps this.codeOutputLines to both table columns
+  var codeOutputD3 = this.domRootD3.select('#pyCodeOutputDiv')
+    .append('table')
+    .attr('id', 'pyCodeOutput')
+    .selectAll('tr')
+    .data(this.codeOutputLines)
+    .enter().append('tr')
+    .selectAll('td')
+    .data(function(d, i){return [d, d] /* map full data item down both columns */;})
+    .enter().append('td')
+    .attr('class', function(d, i) {
+      if (i == 0) {
+        return 'lineNo';
+      }
+      else {
+        return 'cod';
+      }
+    })
+    .attr('id', function(d, i) {
+      if (i == 0) {
+        return 'lineNo' + d.lineNumber;
+      }
+      else {
+        return myViz.generateID('cod' + d.lineNumber); // make globally unique (within the page)
+      }
+    })
+    .html(function(d, i) {
+      if (i == 0) {
+        return d.lineNumber;
+      }
+      else {
+        return htmlspecialchars(d.text);
+      }
+    });
+
+  // create a left-most gutter td that spans ALL rows ...
+  // (NB: valign="top" is CRUCIAL for this to work in IE)
+  if (myViz.params.arrowLines) {
+      myViz.domRoot.find('#pyCodeOutput tr:first')
+          .prepend('<td id="gutterTD" valign="top" rowspan="' + this.codeOutputLines.length + '"><svg id="leftCodeGutterSVG"/></td>');
+      
+      // create prevLineArrow and curLineArrow
+      myViz.domRootD3.select('svg#leftCodeGutterSVG')
+          .append('polygon')
+          .attr('id', 'prevLineArrow')
+          .attr('points', SVG_ARROW_POLYGON)
+          .attr('fill', lightArrowColor);
+      
+      myViz.domRootD3.select('svg#leftCodeGutterSVG')
+          .append('polygon')
+          .attr('id', 'curLineArrow')
+          .attr('points', SVG_ARROW_POLYGON)
+          .attr('fill', darkArrowColor);
+  }
+
+  // 2012-09-05: Disable breakpoints for now to simplify UX
+  /*
+  if (!this.params.embeddedMode) {
+    codeOutputD3.style('cursor', function(d, i) {return 'pointer'})
+    .on('mouseover', function() {
+      setHoverBreakpoint(this);
+    })
+    .on('mouseout', function() {
+      myViz.hoverBreakpoints = d3.map();
+
+      var breakpointHere = d3.select(this).datum().breakpointHere;
+
+      if (!breakpointHere) {
+        unsetBreakpoint(this);
+      }
+
+      renderSliderBreakpoints(); // get rid of hover breakpoint colors
+    })
+    .on('mousedown', function() {
+      // don't do anything if exePts is empty
+      // (i.e., this line was never executed)
+      var exePts = d3.select(this).datum().executionPoints;
+      if (!exePts || exePts.length == 0) {
+        return;
+      }
+
+      // toggle breakpoint
+      d3.select(this).datum().breakpointHere = !d3.select(this).datum().breakpointHere;
+
+      var breakpointHere = d3.select(this).datum().breakpointHere;
+      if (breakpointHere) {
+        setBreakpoint(this);
+      }
+      else {
+        unsetBreakpoint(this);
+      }
+    });
+
+    renderSliderBreakpoints(); // renders breakpoints written in as code comments
+  }
+  */
+
+}
+
+
+// takes a string inputStr and returns an HTML version with
+// the characters from [highlightIndex, highlightIndex+extent) highlighted with
+// a span of class highlightCssClass
+function htmlWithHighlight(inputStr, highlightInd, extent, highlightCssClass) {
+  var prefix = '';
+  if (highlightInd > 0) {
+    prefix = inputStr.slice(0, highlightInd);
+  }
+
+  var highlightedChars = inputStr.slice(highlightInd, highlightInd + extent);
+
+  var suffix = '';
+  if (highlightInd + extent < inputStr.length) {
+    suffix = inputStr.slice(highlightInd + extent, inputStr.length);
+  }
+
+  // ... then set the current line to lineHTML
+  var lineHTML = htmlspecialchars(prefix) +
+      '<span class="' + highlightCssClass + '">' +
+      htmlspecialchars(highlightedChars) +
+      '</span>' +
+      htmlspecialchars(suffix);
+  return lineHTML;
+}
+
+
+// This function is called every time the display needs to be updated
+// smoothTransition is OPTIONAL!
+ExecutionVisualizer.prototype.updateOutput = function(smoothTransition) {
+  if (this.params.hideCode) {
+    this.updateOutputMini();
+  }
+  else {
+    this.updateOutputFull(smoothTransition);
+  }
+  this.try_hook("end_updateOutput", {myViz:this});
+}
+
+ExecutionVisualizer.prototype.updateOutputFull = function(smoothTransition) {
+  assert(this.curTrace);
+  assert(!this.params.hideCode);
+
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+  // there's no point in re-rendering if this pane isn't even visible in the first place!
+  if (!myViz.domRoot.is(':visible')) {
+    return;
+  }
+
+  // reset
+  myViz.curLineNumber = undefined;
+  myViz.prevLineNumber = undefined;
+  myViz.curLineIsReturn = undefined;
+  myViz.prevLineIsReturn = undefined;
+  myViz.curLineExceptionMsg = undefined;
+
+  // really nitpicky!!! gets the difference in width between the code display
+  // and the maximum width of its enclosing div
+  myViz.codeHorizontalOverflow = myViz.domRoot.find('#pyCodeOutput').width() - myViz.domRoot.find('#pyCodeOutputDiv').width();
+  // should always be positive
+  if (myViz.codeHorizontalOverflow < 0) {
+    myViz.codeHorizontalOverflow = 0;
+  }
+
+
+  // TODO: don't do this since it screws with other stuff, and we're not
+  // activating annotation bubbles right now ...
+  // crucial resets for annotations (TODO: kludgy)
+  //myViz.destroyAllAnnotationBubbles();
+  //myViz.initStepAnnotation();
+
+
+  var prevDataVizHeight = myViz.domRoot.find('#dataViz').height();
+
+
+  var gutterSVG = myViz.domRoot.find('svg#leftCodeGutterSVG');
+
+  // one-time initialization of the left gutter
+  // (we often can't do this earlier since the entire pane
+  //  might be invisible and hence returns a height of zero or NaN
+  //  -- the exact format depends on browser)
+  if (!myViz.leftGutterSvgInitialized && myViz.params.arrowLines) {
+    // set the gutter's height to match that of its parent
+    gutterSVG.height(gutterSVG.parent().height());
+
+    var firstRowOffsetY = myViz.domRoot.find('table#pyCodeOutput tr:first').offset().top;
+
+    // first take care of edge case when there's only one line ...
+    myViz.codeRowHeight = myViz.domRoot.find('table#pyCodeOutput td.cod:first').height();
+
+    // ... then handle the (much more common) multi-line case ...
+    // this weird contortion is necessary to get the accurate row height on Internet Explorer
+    // (simpler methods work on all other major browsers, erghhhhhh!!!)
+    if (this.codeOutputLines && this.codeOutputLines.length > 1) {
+      var secondRowOffsetY = myViz.domRoot.find('table#pyCodeOutput tr:nth-child(2)').offset().top;
+      myViz.codeRowHeight = secondRowOffsetY - firstRowOffsetY;
+    }
+
+    assert(myViz.codeRowHeight > 0);
+
+    var gutterOffsetY = gutterSVG.offset().top;
+    var teenyAdjustment = gutterOffsetY - firstRowOffsetY;
+
+    // super-picky detail to adjust the vertical alignment of arrows so that they line up
+    // well with the pointed-to code text ...
+    // (if you want to manually adjust tableTop, then ~5 is a reasonable number)
+    myViz.arrowOffsetY = Math.floor((myViz.codeRowHeight / 2) - (SVG_ARROW_HEIGHT / 2)) - teenyAdjustment;
+
+    myViz.leftGutterSvgInitialized = true;
+  }
+
+  if (myViz.params.arrowLines) {
+      assert(myViz.arrowOffsetY !== undefined);
+      assert(myViz.codeRowHeight !== undefined);
+      assert(0 <= myViz.arrowOffsetY && myViz.arrowOffsetY <= myViz.codeRowHeight);
+  }
+
+  // call the callback if necessary (BEFORE rendering)
+  if (this.params.updateOutputCallback) {
+    this.params.updateOutputCallback(this);
+  }
+
+
+  var curEntry = this.curTrace[this.curInstr];
+  var hasError = false;
+  // bnm  Render a question
+  if (curEntry.question) {
+      //alert(curEntry.question.text);
+      
+      $('#'+curEntry.question.div).modal({position:["25%","50%"]});
+  }
+
+  if (myViz.params.debugMode) {
+    console.log('updateOutputFull', curEntry);
+  }
+
+  // render VCR controls:
+  var totalInstrs = this.curTrace.length;
+
+  var isLastInstr = (this.curInstr == (totalInstrs-1));
+
+  var vcrControls = myViz.domRoot.find("#vcrControls");
+
+  if (isLastInstr) {
+    if (this.promptForUserInput || this.promptForMouseInput) {
+      vcrControls.find("#curInstr").html('<b><font color="' + brightRed + '">Enter user input:</font></b>');
+    }
+    else if (this.instrLimitReached) {
+      vcrControls.find("#curInstr").html("Instruction limit reached");
+    }
+    else {
+      vcrControls.find("#curInstr").html("Program terminated");
+    }
+  }
+  else {
+    vcrControls.find("#curInstr").html("Step " +
+                                       String(this.curInstr + 1) +
+                                       " of " + String(totalInstrs-1));
+  }
+
+
+  vcrControls.find("#jmpFirstInstr").attr("disabled", false);
+  vcrControls.find("#jmpStepBack").attr("disabled", false);
+  vcrControls.find("#jmpStepFwd").attr("disabled", false);
+  vcrControls.find("#jmpLastInstr").attr("disabled", false);
+
+  if (this.curInstr == 0) {
+    vcrControls.find("#jmpFirstInstr").attr("disabled", true);
+    vcrControls.find("#jmpStepBack").attr("disabled", true);
+  }
+  if (isLastInstr) {
+    vcrControls.find("#jmpLastInstr").attr("disabled", true);
+    vcrControls.find("#jmpStepFwd").attr("disabled", true);
+  }
+
+
+  // PROGRAMMATICALLY change the value, so evt.originalEvent should be undefined
+  myViz.domRoot.find('#executionSlider').slider('value', this.curInstr);
+
+
+  // render error (if applicable):
+  if (curEntry.event == 'exception' ||
+      curEntry.event == 'uncaught_exception') {
+    assert(curEntry.exception_msg);
+
+    if (curEntry.exception_msg == "Unknown error") {
+      myViz.domRoot.find("#errorOutput").html('Unknown error: Please email a bug report to philip@pgbovine.net');
+    }
+    else {
+      myViz.domRoot.find("#errorOutput").html(htmlspecialchars(curEntry.exception_msg));
+    }
+
+    myViz.domRoot.find("#errorOutput").show();
+
+    hasError = true;
+    myViz.curLineExceptionMsg = curEntry.exception_msg;
+  }
+  else {
+    if (!this.instrLimitReached) { // ugly, I know :/
+      myViz.domRoot.find("#errorOutput").hide();
+    }
+  }
+
+
+  function highlightCodeLine() {
+    /* if instrLimitReached, then treat like a normal non-terminating line */
+    var isTerminated = (!myViz.instrLimitReached && isLastInstr);
+
+    var pcod = myViz.domRoot.find('#pyCodeOutputDiv');
+
+    var curLineNumber = null;
+    var prevLineNumber = null;
+
+    // only relevant if in myViz.pyCrazyMode
+    var prevColumn = undefined;
+    var prevExprStartCol = undefined;
+    var prevExprWidth = undefined;
+
+    var curIsReturn = (curEntry.event == 'return');
+    var prevIsReturn = false;
+
+
+    if (myViz.curInstr > 0) {
+      prevLineNumber = myViz.curTrace[myViz.curInstr - 1].line;
+      prevIsReturn = (myViz.curTrace[myViz.curInstr - 1].event == 'return');
+
+      /* kinda nutsy hack: if the previous line is a return line, don't
+         highlight it. instead, highlight the line in the enclosing
+         function that called this one (i.e., the call site). e.g.,:
+
+         1. def foo(lst):
+         2.   return len(lst)
+         3.
+         4. y = foo([1,2,3])
+         5. print y
+
+         If prevLineNumber is 2 and prevIsReturn, then curLineNumber is
+         5, since that's the line that executes right after line 2
+         finishes. However, this looks confusing to the user since what
+         actually happened here was that the return value of foo was
+         assigned to y on line 4. I want to have prevLineNumber be line
+         4 so that it gets highlighted. There's no ideal solution, but I
+         think that looks more sensible, since line 4 was the previous
+         line that executed *in this function's frame*.
+      */
+      if (prevIsReturn) {
+        var idx = myViz.curInstr - 1;
+        var retStack = myViz.curTrace[idx].stack_to_render;
+        assert(retStack.length > 0);
+        var retFrameId = retStack[retStack.length - 1].frame_id;
+
+        // now go backwards until we find a 'call' to this frame
+        while (idx >= 0) {
+          var entry = myViz.curTrace[idx];
+          if (entry.event == 'call' && entry.stack_to_render) {
+            var topFrame = entry.stack_to_render[entry.stack_to_render.length - 1];
+            if (topFrame.frame_id == retFrameId) {
+              break; // DONE, we found the call that corresponds to this return
+            }
+          }
+          idx--;
+        }
+
+        // now idx is the index of the 'call' entry. we need to find the
+        // entry before that, which is the instruction before the call.
+        // THAT's the line of the call site.
+        if (idx > 0) {
+          var callingEntry = myViz.curTrace[idx - 1];
+          prevLineNumber = callingEntry.line; // WOOHOO!!!
+          prevIsReturn = false; // this is now a call site, not a return
+          smoothTransition = false;
+        }
+      }
+
+      if (myViz.pyCrazyMode) {
+        var p = myViz.curTrace[myViz.curInstr - 1];
+        prevColumn = p.column;
+        // if these don't exist, set reasonable defaults
+        prevExprStartCol = (p.expr_start_col !== undefined) ? p.expr_start_col : p.column;
+        prevExprWidth = (p.expr_width !== undefined) ? p.expr_width : 1;
+      }
+    }
+
+    curLineNumber = curEntry.line;
+
+    if (myViz.pyCrazyMode) {
+      var curColumn = curEntry.column;
+
+      // if these don't exist, set reasonable defaults
+      var curExprStartCol = (curEntry.expr_start_col !== undefined) ? curEntry.expr_start_col : curColumn;
+      var curExprWidth = (curEntry.expr_width !== undefined) ? curEntry.expr_width : 1;
+
+      var curLineInfo = myViz.codeOutputLines[curLineNumber - 1];
+      assert(curLineInfo.lineNumber == curLineNumber);
+      var codeAtLine = curLineInfo.text;
+
+      // shotgun approach: reset ALL lines to their natural (unbolded) state
+      $.each(myViz.codeOutputLines, function(i, e) {
+        var d = myViz.generateID('cod' + e.lineNumber);
+        myViz.domRoot.find('#' + d).html(htmlspecialchars(e.text));
+      });
+
+
+      // Three possible cases:
+      // 1. previous and current trace entries are on the SAME LINE
+      // 2. previous and current trace entries are on different lines
+      // 3. there is no previous trace entry
+
+      if (prevLineNumber == curLineNumber) {
+        var curLineHTML = '';
+
+        // tricky tricky!
+        // generate a combined line with both previous and current
+        // columns highlighted
+
+        for (var i = 0; i < codeAtLine.length; i++) {
+          var isCur = (curExprStartCol <= i) && (i < curExprStartCol + curExprWidth);
+          var isPrev = (prevExprStartCol <= i) && (i < prevExprStartCol + prevExprWidth);
+
+          var htmlEscapedChar = htmlspecialchars(codeAtLine[i]);
+
+          if (isCur && isPrev) {
+            curLineHTML += '<span class="pycrazy-highlight-prev-and-cur">' + htmlEscapedChar + '</span>';
+          }
+          else if (isPrev) {
+            curLineHTML += '<span class="pycrazy-highlight-prev">' + htmlEscapedChar + '</span>';
+          }
+          else if (isCur) {
+            curLineHTML += '<span class="pycrazy-highlight-cur">' + htmlEscapedChar + '</span>';
+          }
+          else {
+            curLineHTML += htmlEscapedChar;
+          }
+        }
+
+        assert(curLineHTML);
+        myViz.domRoot.find('#' + myViz.generateID('cod' + curLineNumber)).html(curLineHTML);
+      }
+      else {
+        if (prevLineNumber) {
+          var prevLineInfo = myViz.codeOutputLines[prevLineNumber - 1];
+          var prevLineHTML = htmlWithHighlight(prevLineInfo.text, prevExprStartCol, prevExprWidth, 'pycrazy-highlight-prev');
+          myViz.domRoot.find('#' + myViz.generateID('cod' + prevLineNumber)).html(prevLineHTML);
+        }
+        var curLineHTML = htmlWithHighlight(codeAtLine, curExprStartCol, curExprWidth, 'pycrazy-highlight-cur');
+        myViz.domRoot.find('#' + myViz.generateID('cod' + curLineNumber)).html(curLineHTML);
+      }
+    }
+
+    // on 'return' events, give a bit more of a vertical nudge to show that
+    // the arrow is aligned with the 'bottom' of the line ...
+    var prevVerticalNudge = prevIsReturn ? Math.floor(myViz.codeRowHeight / 2) : 0;
+    var curVerticalNudge  = curIsReturn  ? Math.floor(myViz.codeRowHeight / 2) : 0;
+
+
+    // edge case for the final instruction :0
+    if (isTerminated && !hasError) {
+      // don't show redundant arrows on the same line when terminated ...
+      if (prevLineNumber == curLineNumber) {
+        curLineNumber = null;
+      }
+      // otherwise have a smaller vertical nudge (to fit at bottom of display table)
+      else {
+        curVerticalNudge = curVerticalNudge - 2;
+      }
+    }
+
+    if (myViz.params.arrowLines) {
+        if (prevLineNumber) {
+            var pla = myViz.domRootD3.select('#prevLineArrow');
+            var translatePrevCmd = 'translate(0, ' + (((prevLineNumber - 1) * myViz.codeRowHeight) + myViz.arrowOffsetY + prevVerticalNudge) + ')';
+            
+            if (smoothTransition) {
+                pla 
+                    .transition()
+                    .duration(200)
+                    .attr('fill', 'white')
+                    .each('end', function() {
+                        pla
+                            .attr('transform', translatePrevCmd)
+                            .attr('fill', lightArrowColor);
+                        
+                        gutterSVG.find('#prevLineArrow').show(); // show at the end to avoid flickering
+                    });
+            }
+            else {
+                pla.attr('transform', translatePrevCmd)
+                gutterSVG.find('#prevLineArrow').show();
+            }
+            
+        }
+        else {
+            gutterSVG.find('#prevLineArrow').hide();
+        }
+        
+        if (curLineNumber) {
+            var cla = myViz.domRootD3.select('#curLineArrow');
+            var translateCurCmd = 'translate(0, ' + (((curLineNumber - 1) * myViz.codeRowHeight) + myViz.arrowOffsetY + curVerticalNudge) + ')';
+            
+            if (smoothTransition) {
+                cla 
+                    .transition()
+                    .delay(200)
+                    .duration(250)
+                    .attr('transform', translateCurCmd);
+            }
+            else {
+                cla.attr('transform', translateCurCmd);
+            }
+            
+            gutterSVG.find('#curLineArrow').show();
+        }
+        else {
+            gutterSVG.find('#curLineArrow').hide();
+        }
+    }
+
+    myViz.domRootD3.selectAll('#pyCodeOutputDiv td.cod')
+      .style('border-top', function(d) {
+        if (hasError && (d.lineNumber == curEntry.line)) {
+          return '1px solid ' + errorColor;
+        }
+        else {
+          return '';
+        }
+      })
+      .style('border-bottom', function(d) {
+        // COPY AND PASTE ALERT!
+        if (hasError && (d.lineNumber == curEntry.line)) {
+          return '1px solid ' + errorColor;
+        }
+        else {
+          return '';
+        }
+      });
+
+    // returns True iff lineNo is visible in pyCodeOutputDiv
+    function isOutputLineVisible(lineNo) {
+      var lineNoTd = myViz.domRoot.find('#lineNo' + lineNo);
+      var LO = lineNoTd.offset().top;
+
+      var PO = pcod.offset().top;
+      var ST = pcod.scrollTop();
+      var H = pcod.height();
+
+      // add a few pixels of fudge factor on the bottom end due to bottom scrollbar
+      return (PO <= LO) && (LO < (PO + H - 30));
+    }
+
+
+    // smoothly scroll pyCodeOutputDiv so that the given line is at the center
+    function scrollCodeOutputToLine(lineNo) {
+      var lineNoTd = myViz.domRoot.find('#lineNo' + lineNo);
+      var LO = lineNoTd.offset().top;
+
+      var PO = pcod.offset().top;
+      var ST = pcod.scrollTop();
+      var H = pcod.height();
+
+      pcod.stop(); // first stop all previously-queued animations
+      pcod.animate({scrollTop: (ST + (LO - PO - (Math.round(H / 2))))}, 300);
+    }
+
+    if (myViz.params.highlightLines) {
+        myViz.domRoot.find('#pyCodeOutputDiv td.cod').removeClass('highlight-prev');
+        myViz.domRoot.find('#pyCodeOutputDiv td.cod').removeClass('highlight-cur');
+        if (curLineNumber)
+            myViz.domRoot.find('#'+myViz.generateID('cod'+curLineNumber)).addClass('highlight-cur');        
+        if (prevLineNumber)
+            myViz.domRoot.find('#'+myViz.generateID('cod'+prevLineNumber)).addClass('highlight-prev');      
+    }
+
+
+    // smoothly scroll code display
+    if (!isOutputLineVisible(curEntry.line)) {
+      scrollCodeOutputToLine(curEntry.line);
+    }
+
+    // add these fields to myViz
+    myViz.curLineNumber = curLineNumber;
+    myViz.prevLineNumber = prevLineNumber;
+    myViz.curLineIsReturn = curIsReturn;
+    myViz.prevLineIsReturn = prevIsReturn;
+
+  } // end of highlightCodeLine
+
+
+  // render code output:
+  if (curEntry.line) {
+    highlightCodeLine();
+  }
+
+  // render stdout:
+
+  // if there isn't anything in curEntry.stdout, don't even bother
+  // displaying the pane
+  if (curEntry.stdout) {
+    this.domRoot.find('#progOutputs').show();
+
+    // keep original horizontal scroll level:
+    var oldLeft = myViz.domRoot.find("#pyStdout").scrollLeft();
+    myViz.domRoot.find("#pyStdout").val(curEntry.stdout);
+
+    myViz.domRoot.find("#pyStdout").scrollLeft(oldLeft);
+    // scroll to bottom, though:
+    myViz.domRoot.find("#pyStdout").scrollTop(myViz.domRoot.find("#pyStdout")[0].scrollHeight);
+  }
+  else {
+    this.domRoot.find('#progOutputs').hide();
+  }
+
+
+  // inject user-specified HTML/CSS/JS output:
+  // YIKES -- HUGE CODE INJECTION VULNERABILITIES :O
+  myViz.domRoot.find("#htmlOutputDiv").empty();
+  if (curEntry.html_output) {
+    if (curEntry.css_output) {
+      myViz.domRoot.find("#htmlOutputDiv").append('<style type="text/css">' + curEntry.css_output + '</style>');
+    }
+    myViz.domRoot.find("#htmlOutputDiv").append(curEntry.html_output);
+
+    // inject and run JS *after* injecting HTML and CSS
+    if (curEntry.js_output) {
+      // NB: when jQuery injects JS, it executes the code immediately
+      // and then removes the entire <script> block from the DOM
+      // http://stackoverflow.com/questions/610995/jquery-cant-append-script-element
+      myViz.domRoot.find("#htmlOutputDiv").append('<script type="text/javascript">' + curEntry.js_output + '</script>');
+    }
+  }
+
+
+  // finally, render all of the data structures
+  var curEntry = this.curTrace[this.curInstr];
+  var curToplevelLayout = this.curTraceLayouts[this.curInstr];
+  this.renderDataStructures(curEntry, curToplevelLayout);
+
+  this.enterViewAnnotationsMode(); // ... and render optional annotations (if any exist)
+
+
+  // call the callback if necessary (BEFORE rendering)
+  if (myViz.domRoot.find('#dataViz').height() != prevDataVizHeight) {
+    if (this.params.heightChangeCallback) {
+      this.params.heightChangeCallback(this);
+    }
+  }
+
+  // handle raw user input
+  var ruiDiv = myViz.domRoot.find('#rawUserInputDiv');
+  ruiDiv.hide(); // hide by default
+
+  if (isLastInstr && myViz.executeCodeWithRawInputFunc) {
+    if (myViz.promptForUserInput) {
+      ruiDiv.show();
+    }
+  }
+
+} // end of updateOutputFull
+
+
+ExecutionVisualizer.prototype.updateOutputMini = function() {
+  assert(this.params.hideCode);
+  var curEntry = this.curTrace[this.curInstr];
+  var curToplevelLayout = this.curTraceLayouts[this.curInstr];
+  this.renderDataStructures(curEntry, curToplevelLayout);
+
+  this.enterViewAnnotationsMode(); // ... and render optional annotations (if any exist)
+}
+
+
+ExecutionVisualizer.prototype.renderStep = function(step) {
+  assert(0 <= step);
+  assert(step < this.curTrace.length);
+
+  // ignore redundant calls
+  if (this.curInstr == step) {
+    return;
+  }
+
+  this.curInstr = step;
+  this.updateOutput();
+}
+
+
+// Pre-compute the layout of top-level heap objects for ALL execution
+// points as soon as a trace is first loaded. The reason why we want to
+// do this is so that when the user steps through execution points, the
+// heap objects don't "jiggle around" (i.e., preserving positional
+// invariance). Also, if we set up the layout objects properly, then we
+// can take full advantage of d3 to perform rendering and transitions.
+ExecutionVisualizer.prototype.precomputeCurTraceLayouts = function() {
+
+  // curTraceLayouts is a list of top-level heap layout "objects" with the
+  // same length as curTrace after it's been fully initialized. Each
+  // element of curTraceLayouts is computed from the contents of its
+  // immediate predecessor, thus ensuring that objects don't "jiggle
+  // around" between consecutive execution points.
+  //
+  // Each top-level heap layout "object" is itself a LIST of LISTS of
+  // object IDs, where each element of the outer list represents a row,
+  // and each element of the inner list represents columns within a
+  // particular row. Each row can have a different number of columns. Most
+  // rows have exactly ONE column (representing ONE object ID), but rows
+  // containing 1-D linked data structures have multiple columns. Each
+  // inner list element looks something like ['row1', 3, 2, 1] where the
+  // first element is a unique row ID tag, which is used as a key for d3 to
+  // preserve "object constancy" for updates, transitions, etc. The row ID
+  // is derived from the FIRST object ID inserted into the row. Since all
+  // object IDs are unique, all row IDs will also be unique.
+
+  /* This is a good, simple example to test whether objects "jiggle"
+
+  x = [1, [2, [3, None]]]
+  y = [4, [5, [6, None]]]
+
+  x[1][1] = y[1]
+
+  */
+  this.curTraceLayouts = [];
+  this.curTraceLayouts.push([]); // pre-seed with an empty sentinel to simplify the code
+
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+  assert(this.curTrace.length > 0);
+  $.each(this.curTrace, function(i, curEntry) {
+    var prevLayout = myViz.curTraceLayouts[myViz.curTraceLayouts.length - 1];
+
+    // make a DEEP COPY of prevLayout to use as the basis for curLine
+    var curLayout = $.extend(true /* deep copy */ , [], prevLayout);
+
+    // initialize with all IDs from curLayout
+    var idsToRemove = d3.map();
+    $.each(curLayout, function(i, row) {
+      for (var j = 1 /* ignore row ID tag */; j < row.length; j++) {
+        idsToRemove.set(row[j], 1);
+      }
+    });
+
+    var idsAlreadyLaidOut = d3.map(); // to prevent infinite recursion
+
+    function curLayoutIndexOf(id) {
+      for (var i = 0; i < curLayout.length; i++) {
+        var row = curLayout[i];
+        var index = row.indexOf(id);
+        if (index > 0) { // index of 0 is impossible since it's the row ID tag
+          return {row: row, index: index}
+        }
+      }
+      return null;
+    }
+
+    function isLinearObj(heapObj) {
+      var hook_result = myViz.try_hook("isLinearObj", {heapObj:heapObj});
+      if (hook_result[0]) return hook_result[1];
+
+      return heapObj[0] == 'LIST' || heapObj[0] == 'TUPLE' || heapObj[0] == 'SET';
+    }
+
+    function recurseIntoObject(id, curRow, newRow) {
+      // heuristic for laying out 1-D linked data structures: check for enclosing elements that are
+      // structurally identical and then lay them out as siblings in the same "row"
+      var heapObj = curEntry.heap[id];
+      assert(heapObj);
+
+      if (isLinearObj(heapObj)) {
+        $.each(heapObj, function(ind, child) {
+          if (ind < 1) return; // skip type tag
+
+          if (!myViz.isPrimitiveType(child)) {
+            var childID = getRefID(child);
+
+            // comment this out to make "linked lists" that aren't
+            // structurally equivalent look good, e.g.,:
+            //   x = (1, 2, (3, 4, 5, 6, (7, 8, 9, None)))
+            //if (myViz.structurallyEquivalent(heapObj, curEntry.heap[childID])) {
+            //  updateCurLayout(childID, curRow, newRow);
+            //}
+            if (myViz.disableHeapNesting) {
+              updateCurLayout(childID, [], []);
+            }
+            else {
+              updateCurLayout(childID, curRow, newRow);
+            }
+          }
+        });
+      }
+      else if (heapObj[0] == 'DICT') {
+        $.each(heapObj, function(ind, child) {
+          if (ind < 1) return; // skip type tag
+
+          if (myViz.disableHeapNesting) {
+            var dictKey = child[0];
+            if (!myViz.isPrimitiveType(dictKey)) {
+              var keyChildID = getRefID(dictKey);
+              updateCurLayout(keyChildID, [], []);
+            }
+          }
+
+          var dictVal = child[1];
+          if (!myViz.isPrimitiveType(dictVal)) {
+            var childID = getRefID(dictVal);
+            if (myViz.structurallyEquivalent(heapObj, curEntry.heap[childID])) {
+              updateCurLayout(childID, curRow, newRow);
+            }
+            else if (myViz.disableHeapNesting) {
+              updateCurLayout(childID, [], []);
+            }
+          }
+        });
+      }
+      else if (heapObj[0] == 'INSTANCE' || heapObj[0] == 'CLASS') {
+        jQuery.each(heapObj, function(ind, child) {
+          var headerLength = (heapObj[0] == 'INSTANCE') ? 2 : 3;
+          if (ind < headerLength) return;
+
+          if (myViz.disableHeapNesting) {
+            var instKey = child[0];
+            if (!myViz.isPrimitiveType(instKey)) {
+              var keyChildID = getRefID(instKey);
+              updateCurLayout(keyChildID, [], []);
+            }
+          }
+
+          var instVal = child[1];
+          if (!myViz.isPrimitiveType(instVal)) {
+            var childID = getRefID(instVal);
+            if (myViz.structurallyEquivalent(heapObj, curEntry.heap[childID])) {
+              updateCurLayout(childID, curRow, newRow);
+            }
+            else if (myViz.disableHeapNesting) {
+              updateCurLayout(childID, [], []);
+            }
+          }
+        });
+      }
+    }
+
+
+    // a krazy function!
+    // id     - the new object ID to be inserted somewhere in curLayout
+    //          (if it's not already in there)
+    // curRow - a row within curLayout where new linked list
+    //          elements can be appended onto (might be null)
+    // newRow - a new row that might be spliced into curRow or appended
+    //          as a new row in curLayout
+    function updateCurLayout(id, curRow, newRow) {
+      if (idsAlreadyLaidOut.has(id)) {
+        return; // PUNT!
+      }
+
+      var curLayoutLoc = curLayoutIndexOf(id);
+
+      var alreadyLaidOut = idsAlreadyLaidOut.has(id);
+      idsAlreadyLaidOut.set(id, 1); // unconditionally set now
+
+      // if id is already in curLayout ...
+      if (curLayoutLoc) {
+        var foundRow = curLayoutLoc.row;
+        var foundIndex = curLayoutLoc.index;
+
+        idsToRemove.remove(id); // this id is already accounted for!
+
+        // very subtle ... if id hasn't already been handled in
+        // this iteration, then splice newRow into foundRow. otherwise
+        // (later) append newRow onto curLayout as a truly new row
+        if (!alreadyLaidOut) {
+          // splice the contents of newRow right BEFORE foundIndex.
+          // (Think about when you're trying to insert in id=3 into ['row1', 2, 1]
+          //  to represent a linked list 3->2->1. You want to splice the 3
+          //  entry right before the 2 to form ['row1', 3, 2, 1])
+          if (newRow.length > 1) {
+            var args = [foundIndex, 0];
+            for (var i = 1; i < newRow.length; i++) { // ignore row ID tag
+              args.push(newRow[i]);
+              idsToRemove.remove(newRow[i]);
+            }
+            foundRow.splice.apply(foundRow, args);
+
+            // remove ALL elements from newRow since they've all been accounted for
+            // (but don't reassign it away to an empty list, since the
+            // CALLER checks its value. TODO: how to get rid of this gross hack?!?)
+            newRow.splice(0, newRow.length);
+          }
+        }
+
+        // recurse to find more top-level linked entries to append onto foundRow
+        recurseIntoObject(id, foundRow, []);
+      }
+      else {
+        // push id into newRow ...
+        if (newRow.length == 0) {
+          newRow.push('row' + id); // unique row ID (since IDs are unique)
+        }
+        newRow.push(id);
+
+        // recurse to find more top-level linked entries ...
+        recurseIntoObject(id, curRow, newRow);
+
+
+        // if newRow hasn't been spliced into an existing row yet during
+        // a child recursive call ...
+        if (newRow.length > 0) {
+          if (curRow && curRow.length > 0) {
+            // append onto the END of curRow if it exists
+            for (var i = 1; i < newRow.length; i++) { // ignore row ID tag
+              curRow.push(newRow[i]);
+            }
+          }
+          else {
+            // otherwise push to curLayout as a new row
+            //
+            // TODO: this might not always look the best, since we might
+            // sometimes want to splice newRow in the MIDDLE of
+            // curLayout. Consider this example:
+            //
+            // x = [1,2,3]
+            // y = [4,5,6]
+            // x = [7,8,9]
+            //
+            // when the third line is executed, the arrows for x and y
+            // will be crossed (ugly!) since the new row for the [7,8,9]
+            // object is pushed to the end (bottom) of curLayout. The
+            // proper behavior is to push it to the beginning of
+            // curLayout where the old row for 'x' used to be.
+            curLayout.push($.extend(true /* make a deep copy */ , [], newRow));
+          }
+
+          // regardless, newRow is now accounted for, so clear it
+          for (var i = 1; i < newRow.length; i++) { // ignore row ID tag
+            idsToRemove.remove(newRow[i]);
+          }
+          newRow.splice(0, newRow.length); // kill it!
+        }
+
+      }
+    }
+
+
+    // iterate through all globals and ordered stack frames and call updateCurLayout
+    $.each(curEntry.ordered_globals, function(i, varname) {
+      var val = curEntry.globals[varname];
+      if (val !== undefined) { // might not be defined at this line, which is OKAY!
+        if (!myViz.isPrimitiveType(val)) {
+          var id = getRefID(val);
+          updateCurLayout(id, null, []);
+        }
+      }
+    });
+
+    $.each(curEntry.stack_to_render, function(i, frame) {
+      $.each(frame.ordered_varnames, function(xxx, varname) {
+        var val = frame.encoded_locals[varname];
+
+        if (!myViz.isPrimitiveType(val)) {
+          var id = getRefID(val);
+          updateCurLayout(id, null, []);
+        }
+      });
+    });
+
+
+    // iterate through remaining elements of idsToRemove and REMOVE them from curLayout
+    idsToRemove.forEach(function(id, xxx) {
+      id = Number(id); // keys are stored as strings, so convert!!!
+      $.each(curLayout, function(rownum, row) {
+        var ind = row.indexOf(id);
+        if (ind > 0) { // remember that index 0 of the row is the row ID tag
+          row.splice(ind, 1);
+        }
+      });
+    });
+
+    // now remove empty rows (i.e., those with only a row ID tag) from curLayout
+    curLayout = curLayout.filter(function(row) {return row.length > 1});
+
+    myViz.curTraceLayouts.push(curLayout);
+  });
+
+  this.curTraceLayouts.splice(0, 1); // remove seeded empty sentinel element
+  assert (this.curTrace.length == this.curTraceLayouts.length);
+}
+
+
+var heapPtrSrcRE = /__heap_pointer_src_/;
+
+
+var rightwardNudgeHack = true; // suggested by John DeNero, toggle with global
+
+// This is the main event here!!!
+//
+// The "4.0" version of renderDataStructures was refactored to be much
+// less monolithic and more modular. It was made possible by first
+// creating a suite of frontend JS regression tests so that I felt more
+// comfortable mucking around with the super-brittle code in this
+// function. This version was created in April 2014. For reference,
+// before refactoring, this function was 1,030 lines of convoluted code!
+//
+// (Also added the rightward nudge hack to make tree-like structures
+// look more sane without any sophisticated graph rendering code. Thanks
+// to John DeNero for this suggestion all the way back in Fall 2012.)
+//
+// The "3.0" version of renderDataStructures renders variables in
+// a stack, values in a separate heap, and draws line connectors
+// to represent both stack->heap object references and, more importantly,
+// heap->heap references. This version was created in August 2012.
+//
+// The "2.0" version of renderDataStructures renders variables in
+// a stack and values in a separate heap, with data structure aliasing
+// explicitly represented via line connectors (thanks to jsPlumb lib).
+// This version was created in September 2011.
+//
+// The ORIGINAL "1.0" version of renderDataStructures
+// was created in January 2010 and rendered variables and values
+// INLINE within each stack frame without any explicit representation
+// of data structure aliasing. That is, aliased objects were rendered
+// multiple times, and a unique ID label was used to identify aliases.
+ExecutionVisualizer.prototype.renderDataStructures = function(curEntry, curToplevelLayout) {
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+  if (myViz.tabularView) {
+    return; // return EARLY!!!
+  }
+
+  myViz.resetJsPlumbManager(); // very important!!!
+
+  // for simplicity (but sacrificing some performance), delete all
+  // connectors and redraw them from scratch. doing so avoids mysterious
+  // jsPlumb connector alignment issues when the visualizer's enclosing
+  // div contains, say, a "position: relative;" CSS tag
+  // (which happens in the IPython Notebook)
+  var existingConnectionEndpointIDs = d3.map();
+  myViz.jsPlumbInstance.select({scope: 'varValuePointer'}).each(function(c) {
+    // This is VERY crude, but to prevent multiple redundant HEAP->HEAP
+    // connectors from being drawn with the same source and origin, we need to first
+    // DELETE ALL existing HEAP->HEAP connections, and then re-render all of
+    // them in each call to this function. The reason why we can't safely
+    // hold onto them is because there's no way to guarantee that the
+    // *__heap_pointer_src_<src id> IDs are consistent across execution points.
+    //
+    // thus, only add to existingConnectionEndpointIDs if this is NOT heap->heap
+    if (!c.sourceId.match(heapPtrSrcRE)) {
+      existingConnectionEndpointIDs.set(c.sourceId, c.targetId);
+    }
+  });
+
+  var existingParentPointerConnectionEndpointIDs = d3.map();
+  myViz.jsPlumbInstance.select({scope: 'frameParentPointer'}).each(function(c) {
+    existingParentPointerConnectionEndpointIDs.set(c.sourceId, c.targetId);
+  });
+
+
+  // Heap object rendering phase:
+
+  // count everything in curToplevelLayout as already rendered since we will render them
+  // in d3 .each() statements
+  $.each(curToplevelLayout, function(xxx, row) {
+    for (var i = 0; i < row.length; i++) {
+      var objID = row[i];
+      var heapObjID = myViz.generateHeapObjID(objID, myViz.curInstr);
+      myViz.jsPlumbManager.renderedHeapObjectIDs.set(heapObjID, 1);
+    }
+  });
+
+
+
+  // use d3 to render the heap by mapping curToplevelLayout into <table class="heapRow">
+  // and <td class="toplevelHeapObject"> elements
+
+  // for simplicity, CLEAR this entire div every time, which totally
+  // gets rid of the incremental benefits of using d3 for, say,
+  // transitions or efficient updates. but it provides more
+  // deterministic and predictable output for other functions. sigh, i'm
+  // not really using d3 to the fullest, but oh wells!
+  myViz.domRoot.find('#heap')
+    .empty()
+    .html('<div id="heapHeader">Objects</div>');
+
+
+  var heapRows = myViz.domRootD3.select('#heap')
+    .selectAll('table.heapRow')
+    .attr('id', function(d, i){ return 'heapRow' + i; }) // add unique ID
+    .data(curToplevelLayout, function(objLst) {
+      return objLst[0]; // return first element, which is the row ID tag
+  });
+
+
+  // insert new heap rows
+  heapRows.enter().append('table')
+    //.each(function(objLst, i) {console.log('NEW ROW:', objLst, i);})
+    .attr('id', function(d, i){ return 'heapRow' + i; }) // add unique ID
+    .attr('class', 'heapRow');
+
+  // delete a heap row
+  var hrExit = heapRows.exit();
+  hrExit
+    .each(function(d, idx) {
+      //console.log('DEL ROW:', d, idx);
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+    .remove();
+
+
+  // update an existing heap row
+  var toplevelHeapObjects = heapRows
+    //.each(function(objLst, i) { console.log('UPDATE ROW:', objLst, i); })
+    .selectAll('td.toplevelHeapObject')
+    .data(function(d, i) {return d.slice(1, d.length);}, /* map over each row, skipping row ID tag */
+          function(objID) {return objID;} /* each object ID is unique for constancy */);
+
+  // insert a new toplevelHeapObject
+  var tlhEnter = toplevelHeapObjects.enter().append('td')
+    .attr('class', 'toplevelHeapObject')
+    .attr('id', function(d, i) {return 'toplevel_heap_object_' + d;});
+
+  // remember that the enter selection is added to the update
+  // selection so that we can process it later ...
+
+  // update a toplevelHeapObject
+  toplevelHeapObjects
+    .order() // VERY IMPORTANT to put in the order corresponding to data elements
+    .each(function(objID, i) {
+      //console.log('NEW/UPDATE ELT', objID);
+
+      // TODO: add a smoother transition in the future
+      // Right now, just delete the old element and render a new one in its place
+      $(this).empty();
+      myViz.renderCompoundObject(objID, myViz.curInstr, $(this), true);
+    });
+
+  // delete a toplevelHeapObject
+  var tlhExit = toplevelHeapObjects.exit();
+  tlhExit
+    .each(function(d, idx) {
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+    .remove();
+
+
+  // Render globals and then stack frames using d3:
+
+
+  // TODO: this sometimes seems buggy on Safari, so nix it for now:
+  function highlightAliasedConnectors(d, i) {
+    // if this row contains a stack pointer, then highlight its arrow and
+    // ALL aliases that also point to the same heap object
+    var stackPtrId = $(this).find('div.stack_pointer').attr('id');
+    if (stackPtrId) {
+      var foundTargetId = null;
+      myViz.jsPlumbInstance.select({source: stackPtrId}).each(function(c) {foundTargetId = c.targetId;});
+
+      // use foundTargetId to highlight ALL ALIASES
+      myViz.jsPlumbInstance.select().each(function(c) {
+        if (c.targetId == foundTargetId) {
+          c.setHover(true);
+          $(c.canvas).css("z-index", 2000); // ... and move it to the VERY FRONT
+        }
+        else {
+          c.setHover(false);
+        }
+      });
+    }
+  }
+
+  function unhighlightAllConnectors(d, i) {
+    myViz.jsPlumbInstance.select().each(function(c) {
+      c.setHover(false);
+    });
+  }
+
+
+
+  // TODO: coalesce code for rendering globals and stack frames,
+  // since there's so much copy-and-paste grossness right now
+
+  // render all global variables IN THE ORDER they were created by the program,
+  // in order to ensure continuity:
+
+  // Derive a list where each element contains varname
+  // as long as value is NOT undefined.
+  // (Sometimes entries in curEntry.ordered_globals are undefined,
+  // so filter those out.)
+  var realGlobalsLst = [];
+  $.each(curEntry.ordered_globals, function(i, varname) {
+    var val = curEntry.globals[varname];
+
+    // (use '!==' to do an EXACT match against undefined)
+    if (val !== undefined) { // might not be defined at this line, which is OKAY!
+      realGlobalsLst.push(varname);
+    }
+  });
+
+  var globalsID = myViz.generateID('globals');
+  var globalTblID = myViz.generateID('global_table');
+
+  var globalVarTable = myViz.domRootD3.select('#' + globalTblID)
+    .selectAll('tr')
+    .data(realGlobalsLst,
+          function(d) {return d;} // use variable name as key
+    );
+
+  globalVarTable
+    .enter()
+    .append('tr')
+    .attr('class', 'variableTr')
+    .attr('id', function(d, i) {
+        return myViz.generateID(varnameToCssID('global__' + d + '_tr')); // make globally unique (within the page)
+    });
+
+
+  var globalVarTableCells = globalVarTable
+    .selectAll('td.stackFrameVar,td.stackFrameValue')
+    .data(function(d, i){return [d, d];}) /* map varname down both columns */
+
+  globalVarTableCells.enter()
+    .append('td')
+    .attr('class', function(d, i) {return (i == 0) ? 'stackFrameVar' : 'stackFrameValue';});
+
+  // remember that the enter selection is added to the update
+  // selection so that we can process it later ...
+
+  // UPDATE
+  globalVarTableCells
+    .order() // VERY IMPORTANT to put in the order corresponding to data elements
+    .each(function(varname, i) {
+      if (i == 0) {
+        $(this).html(varname);
+      }
+      else {
+        // always delete and re-render the global var ...
+        // NB: trying to cache and compare the old value using,
+        // say -- $(this).attr('data-curvalue', valStringRepr) -- leads to
+        // a mysterious and killer memory leak that I can't figure out yet
+        $(this).empty();
+
+        // make sure varname doesn't contain any weird
+        // characters that are illegal for CSS ID's ...
+        var varDivID = myViz.generateID('global__' + varnameToCssID(varname));
+
+        // need to get rid of the old connector in preparation for rendering a new one:
+        existingConnectionEndpointIDs.remove(varDivID);
+
+        var val = curEntry.globals[varname];
+        if (myViz.isPrimitiveType(val)) {
+          myViz.renderPrimitiveObject(val, $(this));
+        }
+        else {
+          var heapObjID = myViz.generateHeapObjID(getRefID(val), myViz.curInstr);
+
+          if (myViz.textualMemoryLabels) {
+            var labelID = varDivID + '_text_label';
+            $(this).append('<div class="objectIdLabel" id="' + labelID + '">id' + getRefID(val) + '</div>');
+            $(this).find('div#' + labelID).hover(
+              function() {
+                myViz.jsPlumbInstance.connect({source: labelID, target: heapObjID,
+                                               scope: 'varValuePointer'});
+              },
+              function() {
+                myViz.jsPlumbInstance.select({source: labelID}).detach();
+              });
+          }
+          else {
+            // add a stub so that we can connect it with a connector later.
+            // IE needs this div to be NON-EMPTY in order to properly
+            // render jsPlumb endpoints, so that's why we add an "&nbsp;"!
+            $(this).append('<div class="stack_pointer" id="' + varDivID + '">&nbsp;</div>');
+
+            assert(!myViz.jsPlumbManager.connectionEndpointIDs.has(varDivID));
+            myViz.jsPlumbManager.connectionEndpointIDs.set(varDivID, heapObjID);
+            //console.log('STACK->HEAP', varDivID, heapObjID);
+          }
+        }
+      }
+    });
+
+
+
+  globalVarTableCells.exit()
+    .each(function(d, idx) {
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+    .remove();
+
+  globalVarTable.exit()
+    .each(function(d, i) {
+      // detach all stack_pointer connectors for divs that are being removed
+      $(this).find('.stack_pointer').each(function(i, sp) {
+        existingConnectionEndpointIDs.remove($(sp).attr('id'));
+      });
+
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+    .remove();
+
+
+  // for aesthetics, hide globals if there aren't any globals to display
+  if (curEntry.ordered_globals.length == 0) {
+    this.domRoot.find('#' + globalsID).hide();
+  }
+  else {
+    this.domRoot.find('#' + globalsID).show();
+  }
+
+
+  // holy cow, the d3 code for stack rendering is ABSOLUTELY NUTS!
+
+  var stackDiv = myViz.domRootD3.select('#stack');
+
+  // VERY IMPORTANT for selectAll selector to be SUPER specific here!
+  var stackFrameDiv = stackDiv.selectAll('div.stackFrame,div.zombieStackFrame')
+    .data(curEntry.stack_to_render, function(frame) {
+      // VERY VERY VERY IMPORTANT for properly handling closures and nested functions
+      // (see the backend code for more details)
+      return frame.unique_hash;
+    });
+
+  var sfdEnter = stackFrameDiv.enter()
+    .append('div')
+    .attr('class', function(d, i) {return d.is_zombie ? 'zombieStackFrame' : 'stackFrame';})
+    .attr('id', function(d, i) {return d.is_zombie ? myViz.generateID("zombie_stack" + i)
+                                                   : myViz.generateID("stack" + i);
+    })
+    // HTML5 custom data attributes
+    .attr('data-frame_id', function(frame, i) {return frame.frame_id;})
+    .attr('data-parent_frame_id', function(frame, i) {
+      return (frame.parent_frame_id_list.length > 0) ? frame.parent_frame_id_list[0] : null;
+    })
+    .each(function(frame, i) {
+      if (!myViz.drawParentPointers) {
+        return;
+      }
+      // only run if myViz.drawParentPointers is true ...
+
+      var my_CSS_id = $(this).attr('id');
+
+      //console.log(my_CSS_id, 'ENTER');
+
+      // render a parent pointer whose SOURCE node is this frame
+      // i.e., connect this frame to p, where this.parent_frame_id == p.frame_id
+      // (if this.parent_frame_id is null, then p is the global frame)
+      if (frame.parent_frame_id_list.length > 0) {
+        var parent_frame_id = frame.parent_frame_id_list[0];
+        // tricky turkey!
+        // ok this hack just HAPPENS to work by luck ... usually there will only be ONE frame
+        // that matches this selector, but sometimes multiple frames match, in which case the
+        // FINAL frame wins out (since parentPointerConnectionEndpointIDs is a map where each
+        // key can be mapped to only ONE value). it so happens that the final frame winning
+        // out looks "desirable" for some of the closure test cases that I've tried. but
+        // this code is quite brittle :(
+        myViz.domRoot.find('div#stack [data-frame_id=' + parent_frame_id + ']').each(function(i, e) {
+          var parent_CSS_id = $(this).attr('id');
+          //console.log('connect', my_CSS_id, parent_CSS_id);
+          myViz.jsPlumbManager.parentPointerConnectionEndpointIDs.set(my_CSS_id, parent_CSS_id);
+        });
+      }
+      else {
+        // render a parent pointer to the global frame
+        //console.log('connect', my_CSS_id, globalsID);
+        // only do this if there are actually some global variables to display ...
+        if (curEntry.ordered_globals.length > 0) {
+          myViz.jsPlumbManager.parentPointerConnectionEndpointIDs.set(my_CSS_id, globalsID);
+        }
+      }
+
+      // tricky turkey: render parent pointers whose TARGET node is this frame.
+      // i.e., for all frames f such that f.parent_frame_id == my_frame_id,
+      // connect f to this frame.
+      // (make sure not to confuse frame IDs with CSS IDs!!!)
+      var my_frame_id = frame.frame_id;
+      myViz.domRoot.find('div#stack [data-parent_frame_id=' + my_frame_id + ']').each(function(i, e) {
+        var child_CSS_id = $(this).attr('id');
+        //console.log('connect', child_CSS_id, my_CSS_id);
+        myViz.jsPlumbManager.parentPointerConnectionEndpointIDs.set(child_CSS_id, my_CSS_id);
+      });
+    });
+
+  sfdEnter
+    .append('div')
+    .attr('class', 'stackFrameHeader')
+    .html(function(frame, i) {
+
+      // pretty-print lambdas and display other weird characters
+      // (might contain '<' or '>' for weird names like <genexpr>)
+      var funcName = htmlspecialchars(frame.func_name).replace('&lt;lambda&gt;', '\u03bb')
+            .replace('\n', '<br/>');
+
+      var headerLabel = funcName;
+
+      // only display if you're someone's parent (unless showAllFrameLabels)
+      if (frame.is_parent || myViz.showAllFrameLabels) {
+        headerLabel = 'f' + frame.frame_id + ': ' + headerLabel;
+      }
+
+      // optional (btw, this isn't a CSS id)
+      if (frame.parent_frame_id_list.length > 0) {
+        var parentFrameID = frame.parent_frame_id_list[0];
+        headerLabel = headerLabel + ' [parent=f' + parentFrameID + ']';
+      }
+      else if (myViz.showAllFrameLabels) {
+        headerLabel = headerLabel + ' [parent=Global]';
+      }
+
+      return headerLabel;
+    });
+
+  sfdEnter
+    .append('table')
+    .attr('class', 'stackFrameVarTable');
+
+
+  var stackVarTable = stackFrameDiv
+    .order() // VERY IMPORTANT to put in the order corresponding to data elements
+    .select('table').selectAll('tr')
+    .data(function(frame) {
+        // each list element contains a reference to the entire frame
+        // object as well as the variable name
+        // TODO: look into whether we can use d3 parent nodes to avoid
+        // this hack ... http://bost.ocks.org/mike/nest/
+        return frame.ordered_varnames.map(function(varname) {return {varname:varname, frame:frame};});
+      },
+      function(d) {return d.varname;} // use variable name as key
+    );
+
+  stackVarTable
+    .enter()
+    .append('tr')
+    .attr('class', 'variableTr')
+    .attr('id', function(d, i) {
+        return myViz.generateID(varnameToCssID(d.frame.unique_hash + '__' + d.varname + '_tr')); // make globally unique (within the page)
+    });
+
+
+  var stackVarTableCells = stackVarTable
+    .selectAll('td.stackFrameVar,td.stackFrameValue')
+    .data(function(d, i) {return [d, d] /* map identical data down both columns */;});
+
+  stackVarTableCells.enter()
+    .append('td')
+    .attr('class', function(d, i) {return (i == 0) ? 'stackFrameVar' : 'stackFrameValue';});
+
+  stackVarTableCells
+    .order() // VERY IMPORTANT to put in the order corresponding to data elements
+    .each(function(d, i) {
+      var varname = d.varname;
+      var frame = d.frame;
+
+      if (i == 0) {
+        if (varname == '__return__')
+          $(this).html('<span class="retval">Return<br/>value</span>');
+        else
+          $(this).html(varname);
+      }
+      else {
+        // always delete and re-render the stack var ...
+        // NB: trying to cache and compare the old value using,
+        // say -- $(this).attr('data-curvalue', valStringRepr) -- leads to
+        // a mysterious and killer memory leak that I can't figure out yet
+        $(this).empty();
+
+        // make sure varname and frame.unique_hash don't contain any weird
+        // characters that are illegal for CSS ID's ...
+        var varDivID = myViz.generateID(varnameToCssID(frame.unique_hash + '__' + varname));
+
+        // need to get rid of the old connector in preparation for rendering a new one:
+        existingConnectionEndpointIDs.remove(varDivID);
+
+        var val = frame.encoded_locals[varname];
+        if (myViz.isPrimitiveType(val)) {
+          myViz.renderPrimitiveObject(val, $(this));
+        }
+        else {
+          var heapObjID = myViz.generateHeapObjID(getRefID(val), myViz.curInstr);
+          if (myViz.textualMemoryLabels) {
+            var labelID = varDivID + '_text_label';
+            $(this).append('<div class="objectIdLabel" id="' + labelID + '">id' + getRefID(val) + '</div>');
+            $(this).find('div#' + labelID).hover(
+              function() {
+                myViz.jsPlumbInstance.connect({source: labelID, target: heapObjID,
+                                               scope: 'varValuePointer'});
+              },
+              function() {
+                myViz.jsPlumbInstance.select({source: labelID}).detach();
+              });
+          }
+          else {
+            // add a stub so that we can connect it with a connector later.
+            // IE needs this div to be NON-EMPTY in order to properly
+            // render jsPlumb endpoints, so that's why we add an "&nbsp;"!
+            $(this).append('<div class="stack_pointer" id="' + varDivID + '">&nbsp;</div>');
+
+            assert(!myViz.jsPlumbManager.connectionEndpointIDs.has(varDivID));
+            myViz.jsPlumbManager.connectionEndpointIDs.set(varDivID, heapObjID);
+            //console.log('STACK->HEAP', varDivID, heapObjID);
+          }
+        }
+      }
+    });
+
+
+  stackVarTableCells.exit()
+    .each(function(d, idx) {
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+   .remove();
+
+  stackVarTable.exit()
+    .each(function(d, i) {
+      $(this).find('.stack_pointer').each(function(i, sp) {
+        // detach all stack_pointer connectors for divs that are being removed
+        existingConnectionEndpointIDs.remove($(sp).attr('id'));
+      });
+
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+    .remove();
+
+  stackFrameDiv.exit()
+    .each(function(frame, i) {
+      $(this).find('.stack_pointer').each(function(i, sp) {
+        // detach all stack_pointer connectors for divs that are being removed
+        existingConnectionEndpointIDs.remove($(sp).attr('id'));
+      });
+
+      var my_CSS_id = $(this).attr('id');
+
+      //console.log(my_CSS_id, 'EXIT');
+
+      // Remove all pointers where either the source or destination end is my_CSS_id
+      existingParentPointerConnectionEndpointIDs.forEach(function(k, v) {
+        if (k == my_CSS_id || v == my_CSS_id) {
+          //console.log('remove EPP', k, v);
+          existingParentPointerConnectionEndpointIDs.remove(k);
+        }
+      });
+
+      $(this).empty(); // crucial for garbage collecting jsPlumb connectors!
+    })
+    .remove();
+
+
+  // Rightward nudge hack to make tree-like structures look more sane
+  // without any sophisticated graph rendering code. Thanks to John
+  // DeNero for this suggestion in Fall 2012.
+  //
+  // This hack tries to ensure that all pointers that span different
+  // rows point RIGHTWARD (as much as possible), which makes tree-like
+  // structures look decent. e.g.,:
+  //
+  // t = [[['a', 'b'], ['c', 'd']], [[1,2], [3,4]]]
+  //
+  // Do it here since all of the divs have been rendered by now, but no
+  // jsPlumb arrows have been rendered yet.
+  if (rightwardNudgeHack) {
+    // Basic idea: keep a set of all nudged ROWS for each nudger row, so
+    // that when you get nudged, you can, in turn, nudge all of the rows
+    // that you've nudged. this algorithm nicely takes care of the fact
+    // that there might not be cycles in objects that you've nudged, but
+    // there are cycles in entire rows.
+    //
+    // Key:   ID of .heapRow object that did the nudging
+    // Value: set of .heapRow ID that were (transitively) nudged by this element
+    //        (represented as a d3.map)
+    var nudger_to_nudged_rows = {};
+
+    // VERY IMPORTANT to sort these connector IDs in ascending order,
+    // since I think they're rendered left-to-right, top-to-bottom in ID
+    // order, so we want to run the nudging algorithm in that same order.
+    var srcHeapConnectorIDs = myViz.jsPlumbManager.heapConnectionEndpointIDs.keys();
+    srcHeapConnectorIDs.sort();
+
+    $.each(srcHeapConnectorIDs, function(i, srcID) {
+      var dstID = myViz.jsPlumbManager.heapConnectionEndpointIDs.get(srcID);
+
+      var srcAnchorObject = myViz.domRoot.find('#' + srcID);
+      var srcHeapObject = srcAnchorObject.closest('.heapObject');
+      var dstHeapObject = myViz.domRoot.find('#' + dstID);
+      assert(dstHeapObject.attr('class') == 'heapObject');
+
+      var srcHeapRow = srcHeapObject.closest('.heapRow');
+      var dstHeapRow = dstHeapObject.closest('.heapRow');
+
+      var srcRowID = srcHeapRow.attr('id');
+      var dstRowID = dstHeapRow.attr('id');
+
+      // only consider nudging if srcID and dstID are on different rows
+      if (srcRowID != dstRowID) {
+        var srcAnchorLeft = srcAnchorObject.offset().left;
+        var srcHeapObjectLeft = srcHeapObject.offset().left;
+        var dstHeapObjectLeft = dstHeapObject.offset().left;
+
+        // if srcAnchorObject is to the RIGHT of dstHeapObject, then nudge
+        // dstHeapObject to the right
+        if (srcAnchorLeft > dstHeapObjectLeft) {
+          // an extra nudge of 32px matches up pretty well with the
+          // current CSS padding around .toplevelHeapObject
+          var delta = (srcAnchorLeft - dstHeapObjectLeft) + 32;
+
+          // set margin rather than padding so that arrows tips still end
+          // at the left edge of the element.
+          // whoa, set relative CSS using +=, nice!
+          dstHeapObject.css('margin-left', '+=' + delta);
+
+          //console.log(srcRowID, 'nudged', dstRowID, 'by', delta);
+
+          var cur_nudgee_set = nudger_to_nudged_rows[srcRowID];
+          if (cur_nudgee_set === undefined) {
+            cur_nudgee_set = d3.map();
+            nudger_to_nudged_rows[srcRowID] = cur_nudgee_set;
+          }
+          cur_nudgee_set.set(dstRowID, 1 /* useless value */);
+
+          // now if dstRowID itself nudged some other nodes, then nudge
+          // all of its nudgees by delta as well
+          var dst_nudgee_set = nudger_to_nudged_rows[dstRowID];
+          if (dst_nudgee_set) {
+            dst_nudgee_set.forEach(function(k, v) {
+              // don't nudge if it's yourself, to make cycles look
+              // somewhat reasonable (although still not ideal). e.g.,:
+              //   x = [1,2]
+              //   y = [3,x]
+              //   x[1] = y
+              if (k != srcRowID) {
+                // nudge this entire ROW by delta as well
+                myViz.domRoot.find('#' + k).css('margin-left', '+=' + delta);
+
+                // then transitively add to entry for srcRowID
+                cur_nudgee_set.set(k, 1 /* useless value */);
+              }
+            });
+          }
+        }
+      }
+    });
+  }
+
+
+  // NB: ugh, I'm not very happy about this hack, but it seems necessary
+  // for embedding within sophisticated webpages such as IPython Notebook
+
+  // delete all connectors. do this AS LATE AS POSSIBLE so that
+  // (presumably) the calls to $(this).empty() earlier in this function
+  // will properly garbage collect the connectors
+  //
+  // WARNING: for environment parent pointers, garbage collection doesn't seem to
+  // be working as intended :(
+  //
+  // I suspect that this is due to the fact that parent pointers are SIBLINGS
+  // of stackFrame divs and not children, so when stackFrame divs get destroyed,
+  // their associated parent pointers do NOT.)
+  myViz.jsPlumbInstance.reset();
+
+
+  // use jsPlumb scopes to keep the different kinds of pointers separated
+  function renderVarValueConnector(varID, valueID) {
+    myViz.jsPlumbInstance.connect({source: varID, target: valueID, scope: 'varValuePointer'});
+  }
+
+
+  var totalParentPointersRendered = 0;
+
+  function renderParentPointerConnector(srcID, dstID) {
+    // SUPER-DUPER-ugly hack since I can't figure out a cleaner solution for now:
+    // if either srcID or dstID no longer exists, then SKIP rendering ...
+    if ((myViz.domRoot.find('#' + srcID).length == 0) ||
+        (myViz.domRoot.find('#' + dstID).length == 0)) {
+      return;
+    }
+
+    //console.log('renderParentPointerConnector:', srcID, dstID);
+
+    myViz.jsPlumbInstance.connect({source: srcID, target: dstID,
+                                   anchors: ["LeftMiddle", "LeftMiddle"],
+
+                                   // 'horizontally offset' the parent pointers up so that they don't look as ugly ...
+                                   //connector: ["Flowchart", { stub: 9 + (6 * (totalParentPointersRendered + 1)) }],
+
+                                   // actually let's try a bezier curve ...
+                                   connector: [ "Bezier", { curviness: 45 }],
+
+                                   endpoint: ["Dot", {radius: 4}],
+                                   //hoverPaintStyle: {lineWidth: 1, strokeStyle: connectorInactiveColor}, // no hover colors
+                                   scope: 'frameParentPointer'});
+    totalParentPointersRendered++;
+  }
+
+  if (!myViz.textualMemoryLabels) {
+    // re-render existing connectors and then ...
+    existingConnectionEndpointIDs.forEach(renderVarValueConnector);
+    // add all the NEW connectors that have arisen in this call to renderDataStructures
+    myViz.jsPlumbManager.connectionEndpointIDs.forEach(renderVarValueConnector);
+  }
+  // do the same for environment parent pointers
+  if (myViz.drawParentPointers) {
+    existingParentPointerConnectionEndpointIDs.forEach(renderParentPointerConnector);
+    myViz.jsPlumbManager.parentPointerConnectionEndpointIDs.forEach(renderParentPointerConnector);
+  }
+
+  /*
+  myViz.jsPlumbInstance.select().each(function(c) {
+    console.log('CONN:', c.sourceId, c.targetId);
+  });
+  */
+  //console.log('---', myViz.jsPlumbInstance.select().length, '---');
+
+
+  function highlight_frame(frameID) {
+    myViz.jsPlumbInstance.select().each(function(c) {
+      // find the enclosing .stackFrame ...
+      var stackFrameDiv = c.source.closest('.stackFrame');
+
+      // if this connector starts in the selected stack frame ...
+      if (stackFrameDiv.attr('id') == frameID) {
+        // then HIGHLIGHT IT!
+        c.setPaintStyle({lineWidth:1, strokeStyle: connectorBaseColor});
+        c.endpoints[0].setPaintStyle({fillStyle: connectorBaseColor});
+        //c.endpoints[1].setVisible(false, true, true); // JUST set right endpoint to be invisible
+
+        $(c.canvas).css("z-index", 1000); // ... and move it to the VERY FRONT
+      }
+      // for heap->heap connectors
+      else if (myViz.jsPlumbManager.heapConnectionEndpointIDs.has(c.endpoints[0].elementId)) {
+        // NOP since it's already the color and style we set by default
+      }
+      else {
+        // else unhighlight it
+        c.setPaintStyle({lineWidth:1, strokeStyle: connectorInactiveColor});
+        c.endpoints[0].setPaintStyle({fillStyle: connectorInactiveColor});
+        //c.endpoints[1].setVisible(false, true, true); // JUST set right endpoint to be invisible
+
+        $(c.canvas).css("z-index", 0);
+      }
+    });
+
+
+    // clear everything, then just activate this one ...
+    myViz.domRoot.find(".stackFrame").removeClass("highlightedStackFrame");
+    myViz.domRoot.find('#' + frameID).addClass("highlightedStackFrame");
+  }
+
+
+  // highlight the top-most non-zombie stack frame or, if not available, globals
+  var frame_already_highlighted = false;
+  $.each(curEntry.stack_to_render, function(i, e) {
+    if (e.is_highlighted) {
+      highlight_frame(myViz.generateID('stack' + i));
+      frame_already_highlighted = true;
+    }
+  });
+
+  if (!frame_already_highlighted) {
+    highlight_frame(myViz.generateID('globals'));
+  }
+
+  myViz.try_hook("end_renderDataStructures", {myViz:myViz});
+}
+
+
+// render a tabular visualization where each row is an execution step,
+// and each column is a variable
+ExecutionVisualizer.prototype.renderTabularView = function() {
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+  myViz.resetJsPlumbManager(); // very important!!!
+
+  var allGlobalVars = [];
+  // Key: function name
+  // Value: list of ordered variables for function
+  var funcNameToOrderedVars = {};
+  var orderedFuncNames = []; // function names in order of appearance
+
+  // iterate through the entire trace and find all global variables, and
+  // all local variables in all functions, in order of appearance in the trace
+  $.each(myViz.curTrace, function(i, elt) {
+    $.each(elt.ordered_globals, function(i, g) {
+      // don't add duplicates into this list,
+      // but need to use a list to maintain ORDERING
+      if ($.inArray(g, allGlobalVars) === -1) {
+        allGlobalVars.push(g);
+      }
+    });
+
+    $.each(elt.stack_to_render, function(i, sf) {
+      var funcVarsList = funcNameToOrderedVars[sf.func_name];
+      if (funcVarsList === undefined) {
+        funcVarsList = [];
+        funcNameToOrderedVars[sf.func_name] = funcVarsList;
+        orderedFuncNames.push(sf.func_name);
+      }
+      $.each(sf.ordered_varnames, function(i, v) {
+        // don't add duplicates into this list,
+        // but need to use a list to maintain ORDERING
+        // (ignore the special __return__ value)
+        if ($.inArray(v, funcVarsList) === -1 && v !== '__return__') {
+          funcVarsList.push(v);
+        }
+      });
+    });
+  });
+
+  /*
+  console.log("allGlobalVars:", allGlobalVars);
+  console.log("orderedFuncNames:", orderedFuncNames);
+  $.each(funcNameToOrderedVars, function(k, v) {
+    console.log("funcNameToOrderedVars[", k, "] =", v);
+  });
+  */
+
+  var allVarNames = ['Step'];
+
+  $.each(allGlobalVars, function(i, e) {
+    allVarNames.push(e);
+  });
+  $.each(orderedFuncNames, function(i, funcName) {
+    $.each(funcNameToOrderedVars[funcName], function(i, v) {
+      allVarNames.push(funcName + ':' + v);
+    });
+  });
+
+  // get the values of all objects in trace entry e
+  function getAllOrderedValues(curEntry) {
+    // HACK! start with a blank sentinel since the first column of the
+    // table is the step number
+    var allVarValues = [''];
+
+    $.each(allGlobalVars, function(i, e) {
+      allVarValues.push(curEntry.globals[e]);
+    });
+
+    // for local variables, grab only the values in the highlighted
+    // frame (if any)
+    var highlightedFrame = null;
+    $.each(curEntry.stack_to_render, function(i, sf) {
+      if (sf.is_highlighted) {
+        highlightedFrame = sf;
+      }
+    });
+
+    $.each(orderedFuncNames, function(i, funcName) {
+      $.each(funcNameToOrderedVars[funcName], function(i, v) {
+        var found = false;
+        if (highlightedFrame && funcName == highlightedFrame.func_name) {
+          var obj = highlightedFrame.encoded_locals[v];
+          if (obj) {
+            allVarValues.push(obj);
+            found = true;
+          }
+        }
+
+        // push an empty value if not found since we want everything to
+        // align with allVarNames
+        if (!found) {
+          allVarValues.push(undefined);
+        }
+      });
+    });
+
+    // TODO: also walk up parent pointers to also display variable
+    // values in enclosing frames
+
+    return allVarValues;
+  }
+
+
+  var tblRoot = myViz.domRootD3.select("#optTabularView");
+  var tbl = tblRoot.append("table");
+  tbl.attr('id', 'optTable');
+
+  var tHead = tbl.append('thead').attr('class', 'stepTableThead').append('tr');
+  tHead.attr('class', 'stepTableTr');
+  tHead.selectAll('thead td')
+    .data(allVarNames)
+    .enter()
+    .append('td')
+    .attr('class', 'stepTableTd')
+    .html(function(d) { return d; })
+
+  var tBody = tbl.append('tbody');
+  tBody.attr('class', 'stepTableTbody');
+
+  var stepsAndTraceEntries = [];
+  $.each(myViz.curTrace, function(i, e) {
+    stepsAndTraceEntries.push([i, e]);
+  });
+
+  var tr = tBody.selectAll('tbody tr')
+    .data(stepsAndTraceEntries)
+    .enter()
+    .append("tr")
+    .attr("step", function(d, i) { return i; })
+    .attr("class", 'stepTableTr');
+
+  var td = tr.selectAll("td")
+    .data(function(e) { return getAllOrderedValues(e[1]); })
+    .enter()
+    .append("td")
+    .attr('class', 'stepTableTd')
+    .each(function(obj, i) {
+      $(this).empty();
+
+      // TODO: fixme -- this is super kludgy; must be a better way
+      var step = parseInt($(this).closest('tr').attr('step'));
+
+      if (i == 0) {
+        $(this).html(step + 1); // one-indexed for readability
+      }
+      else {
+        if (obj === undefined) {
+          // keep this table cell EMPTY
+        }
+        else {
+          myViz.renderNestedObject(obj, step, $(this), 'tabular');
+        }
+      }
+    });
+
+
+  myViz.jsPlumbInstance.reset();
+
+  function renderTableVarValueConnector(varID, valueID) {
+    myViz.jsPlumbInstance.connect({source: varID, target: valueID,
+                                   scope: 'varValuePointer',
+                                   // make it look more aesthetically pleasing:
+                                   anchors: ['TopCenter', 'LeftMiddle']});
+  }
+
+  myViz.jsPlumbManager.connectionEndpointIDs.forEach(renderTableVarValueConnector);
+}
+
+
+// rendering functions, which all take a d3 dom element to anchor the
+// new element to render
+ExecutionVisualizer.prototype.renderPrimitiveObject = function(obj, d3DomElement) {
+  if (this.try_hook("renderPrimitiveObject", {obj:obj, d3DomElement:d3DomElement})[0])
+    return;
+
+  var typ = typeof obj;
+
+  if (obj == null) {
+    d3DomElement.append('<span class="nullObj">' + this.getRealLabel('None') + '</span>');
+  }
+  else if (typ == "number") {
+    d3DomElement.append('<span class="numberObj">' + obj + '</span>');
+  }
+  else if (typ == "boolean") {
+    if (obj) {
+      d3DomElement.append('<span class="boolObj">' + this.getRealLabel('True') + '</span>');
+    }
+    else {
+      d3DomElement.append('<span class="boolObj">' + this.getRealLabel('False') + '</span>');
+    }
+  }
+  else if (typ == "string") {
+    // escape using htmlspecialchars to prevent HTML/script injection
+    var literalStr = htmlspecialchars(obj);
+
+    // print as a double-quoted string literal
+    // with explicit newlines as <br/>
+    literalStr = literalStr.replace(new RegExp('\n', 'g'), '<br/>'); // replace ALL
+    literalStr = literalStr.replace(new RegExp('\"', 'g'), '\\"'); // replace ALL
+    literalStr = '"' + literalStr + '"';
+
+    d3DomElement.append('<span class="stringObj">' + literalStr + '</span>');
+  }
+  else if (typ == "object") {
+    assert(obj[0] == 'SPECIAL_FLOAT' || obj[0] == 'JS_SPECIAL_VAL');
+    d3DomElement.append('<span class="numberObj">' + obj[1] + '</span>');
+  }
+  else {
+    assert(false);
+  }
+}
+
+
+ExecutionVisualizer.prototype.renderNestedObject = function(obj, stepNum, d3DomElement) {
+  if (this.isPrimitiveType(obj)) {
+    this.renderPrimitiveObject(obj, d3DomElement);
+  }
+  else {
+    // obj is a ["REF", <int>] so dereference the 'pointer' to render that object
+    this.renderCompoundObject(getRefID(obj), stepNum, d3DomElement, false);
+  }
+}
+
+
+ExecutionVisualizer.prototype.renderCompoundObject =
+function(objID, stepNum, d3DomElement, isTopLevel) {
+  var myViz = this; // to prevent confusion of 'this' inside of nested functions
+
+  var heapObjID = myViz.generateHeapObjID(objID, stepNum);
+
+  if (!isTopLevel && myViz.jsPlumbManager.renderedHeapObjectIDs.has(heapObjID)) {
+    var srcDivID = myViz.generateID('heap_pointer_src_' + myViz.jsPlumbManager.heap_pointer_src_id);
+    myViz.jsPlumbManager.heap_pointer_src_id++; // just make sure each source has a UNIQUE ID
+
+    var dstDivID = heapObjID;
+
+    if (myViz.textualMemoryLabels) {
+      var labelID = srcDivID + '_text_label';
+      d3DomElement.append('<div class="objectIdLabel" id="' + labelID + '">id' + objID + '</div>');
+
+      myViz.domRoot.find('div#' + labelID).hover(
+        function() {
+          myViz.jsPlumbInstance.connect({source: labelID, target: dstDivID,
+                                         scope: 'varValuePointer'});
+        },
+        function() {
+          myViz.jsPlumbInstance.select({source: labelID}).detach();
+        });
+    }
+    else {
+      // render jsPlumb arrow source since this heap object has already been rendered
+      // (or will be rendered soon)
+
+      // add a stub so that we can connect it with a connector later.
+      // IE needs this div to be NON-EMPTY in order to properly
+      // render jsPlumb endpoints, so that's why we add an "&nbsp;"!
+      d3DomElement.append('<div id="' + srcDivID + '">&nbsp;</div>');
+
+      assert(!myViz.jsPlumbManager.connectionEndpointIDs.has(srcDivID));
+      myViz.jsPlumbManager.connectionEndpointIDs.set(srcDivID, dstDivID);
+      //console.log('HEAP->HEAP', srcDivID, dstDivID);
+
+      assert(!myViz.jsPlumbManager.heapConnectionEndpointIDs.has(srcDivID));
+      myViz.jsPlumbManager.heapConnectionEndpointIDs.set(srcDivID, dstDivID);
+    }
+
+    return; // early return!
+  }
+
+
+  // wrap ALL compound objects in a heapObject div so that jsPlumb
+  // connectors can point to it:
+  d3DomElement.append('<div class="heapObject" id="' + heapObjID + '"></div>');
+  d3DomElement = myViz.domRoot.find('#' + heapObjID); // TODO: maybe inefficient
+
+  myViz.jsPlumbManager.renderedHeapObjectIDs.set(heapObjID, 1);
+
+  var curHeap = myViz.curTrace[stepNum].heap;
+  var obj = curHeap[objID];
+  assert($.isArray(obj));
+
+  // prepend the type label with a memory address label
+  var typeLabelPrefix = '';
+  if (myViz.textualMemoryLabels) {
+    typeLabelPrefix = 'id' + objID + ':';
+  }
+
+  var hook_result = myViz.try_hook("renderCompoundObject",
+                             {objID:objID, d3DomElement:d3DomElement, 
+                              isTopLevel:isTopLevel, obj:obj, 
+                              typeLabelPrefix:typeLabelPrefix,
+                              stepNum:stepNum,
+                              myViz:myViz});
+  if (hook_result[0]) return;
+
+  if (obj[0] == 'LIST' || obj[0] == 'TUPLE' || obj[0] == 'SET' || obj[0] == 'DICT') {
+    var label = obj[0].toLowerCase();
+
+    assert(obj.length >= 1);
+    if (obj.length == 1) {
+      d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + ' empty ' + myViz.getRealLabel(label) + '</div>');
+    }
+    else {
+      d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + myViz.getRealLabel(label) + '</div>');
+      d3DomElement.append('<table class="' + label + 'Tbl"></table>');
+      var tbl = d3DomElement.children('table');
+
+      if (obj[0] == 'LIST' || obj[0] == 'TUPLE') {
+        tbl.append('<tr></tr><tr></tr>');
+        var headerTr = tbl.find('tr:first');
+        var contentTr = tbl.find('tr:last');
+        $.each(obj, function(ind, val) {
+          if (ind < 1) return; // skip type tag and ID entry
+
+          // add a new column and then pass in that newly-added column
+          // as d3DomElement to the recursive call to child:
+          headerTr.append('<td class="' + label + 'Header"></td>');
+          headerTr.find('td:last').append(ind - 1);
+
+          contentTr.append('<td class="'+ label + 'Elt"></td>');
+          myViz.renderNestedObject(val, stepNum, contentTr.find('td:last'));
+        });
+      }
+      else if (obj[0] == 'SET') {
+        // create an R x C matrix:
+        var numElts = obj.length - 1;
+
+        // gives roughly a 3x5 rectangular ratio, square is too, err,
+        // 'square' and boring
+        var numRows = Math.round(Math.sqrt(numElts));
+        if (numRows > 3) {
+          numRows -= 1;
+        }
+
+        var numCols = Math.round(numElts / numRows);
+        // round up if not a perfect multiple:
+        if (numElts % numRows) {
+          numCols += 1;
+        }
+
+        jQuery.each(obj, function(ind, val) {
+          if (ind < 1) return; // skip 'SET' tag
+
+          if (((ind - 1) % numCols) == 0) {
+            tbl.append('<tr></tr>');
+          }
+
+          var curTr = tbl.find('tr:last');
+          curTr.append('<td class="setElt"></td>');
+          myViz.renderNestedObject(val, stepNum, curTr.find('td:last'));
+        });
+      }
+      else if (obj[0] == 'DICT') {
+        $.each(obj, function(ind, kvPair) {
+          if (ind < 1) return; // skip 'DICT' tag
+
+          tbl.append('<tr class="dictEntry"><td class="dictKey"></td><td class="dictVal"></td></tr>');
+          var newRow = tbl.find('tr:last');
+          var keyTd = newRow.find('td:first');
+          var valTd = newRow.find('td:last');
+
+          var key = kvPair[0];
+          var val = kvPair[1];
+
+          myViz.renderNestedObject(key, stepNum, keyTd);
+          myViz.renderNestedObject(val, stepNum, valTd);
+        });
+      }
+    }
+  }
+  else if (obj[0] == 'INSTANCE' || obj[0] == 'CLASS') {
+    var isInstance = (obj[0] == 'INSTANCE');
+    var headerLength = isInstance ? 2 : 3;
+
+    assert(obj.length >= headerLength);
+
+    if (isInstance) {
+      d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + obj[1] + ' ' + myViz.getRealLabel('instance') + '</div>');
+    }
+    else {
+      var superclassStr = '';
+      if (obj[2].length > 0) {
+        superclassStr += ('[extends ' + obj[2].join(', ') + '] ');
+      }
+      d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + obj[1] + ' class ' + superclassStr +
+                          '<br/>' + '<a href="#" id="attrToggleLink">hide attributes</a>' + '</div>');
+    }
+
+    // right now, let's NOT display class members, since that clutters
+    // up the display too much. in the future, consider displaying
+    // class members in a pop-up pane on mouseover or mouseclick
+    // actually nix what i just said above ...
+    //if (!isInstance) return;
+
+    if (obj.length > headerLength) {
+      var lab = isInstance ? 'inst' : 'class';
+      d3DomElement.append('<table class="' + lab + 'Tbl"></table>');
+
+      var tbl = d3DomElement.children('table');
+
+      $.each(obj, function(ind, kvPair) {
+        if (ind < headerLength) return; // skip header tags
+
+        tbl.append('<tr class="' + lab + 'Entry"><td class="' + lab + 'Key"></td><td class="' + lab + 'Val"></td></tr>');
+
+        var newRow = tbl.find('tr:last');
+        var keyTd = newRow.find('td:first');
+        var valTd = newRow.find('td:last');
+
+        // the keys should always be strings, so render them directly (and without quotes):
+        // (actually this isn't the case when strings are rendered on the heap)
+        if (typeof kvPair[0] == "string") {
+          // common case ...
+          var attrnameStr = htmlspecialchars(kvPair[0]);
+          keyTd.append('<span class="keyObj">' + attrnameStr + '</span>');
+        }
+        else {
+          // when strings are rendered as heap objects ...
+          myViz.renderNestedObject(kvPair[0], stepNum, keyTd);
+        }
+
+        // values can be arbitrary objects, so recurse:
+        myViz.renderNestedObject(kvPair[1], stepNum, valTd);
+      });
+    }
+
+    // class attributes can be displayed or hidden, so as not to
+    // CLUTTER UP the display with a ton of attributes, especially
+    // from imported modules and custom types created from, say,
+    // collections.namedtuple
+    if (!isInstance) {
+      // super kludgy! use a global selector $ to get at the DOM
+      // element, which should be okay since IDs should be globally
+      // unique on a page, even with multiple ExecutionVisualizer
+      // instances ... but still feels dirty to me since it violates
+      // my "no using naked $(__) selectors for jQuery" convention :/
+      $(d3DomElement.selector + ' .typeLabel #attrToggleLink').click(function() {
+        var elt = $(d3DomElement.selector + ' .classTbl');
+        elt.toggle();
+        $(this).html((elt.is(':visible') ? 'hide' : 'show') + ' attributes');
+
+        if (elt.is(':visible')) {
+          myViz.classAttrsHidden[d3DomElement.selector] = false;
+          $(this).html('hide attributes');
+        }
+        else {
+          myViz.classAttrsHidden[d3DomElement.selector] = true;
+          $(this).html('show attributes');
+        }
+
+        myViz.redrawConnectors(); // redraw all arrows!
+
+        return false; // so that the <a href="#"> doesn't reload the page
+      });
+
+      // "remember" whether this was hidden earlier during this
+      // visualization session
+      if (myViz.classAttrsHidden[d3DomElement.selector]) {
+        $(d3DomElement.selector + ' .classTbl').hide();
+        $(d3DomElement.selector + ' .typeLabel #attrToggleLink').html('show attributes');
+      }
+    }
+  }
+  else if (obj[0] == 'INSTANCE_PPRINT') {
+    d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + obj[1] + ' instance</div>');
+
+    strRepr = htmlspecialchars(obj[2]); // escape strings!
+    d3DomElement.append('<table class="customObjTbl"><tr><td class="customObjElt">' + strRepr + '</td></tr></table>');
+  }
+  else if (obj[0] == 'FUNCTION') {
+    assert(obj.length == 3);
+
+    // pretty-print lambdas and display other weird characters:
+    var funcName = htmlspecialchars(obj[1]).replace('&lt;lambda&gt;', '\u03bb');
+    var parentFrameID = obj[2]; // optional
+
+    if (!myViz.compactFuncLabels) {
+      d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + myViz.getRealLabel('function') + '</div>');
+    }
+
+    var funcPrefix = myViz.compactFuncLabels ? 'func' : '';
+
+    if (parentFrameID) {
+      d3DomElement.append('<div class="funcObj">' + funcPrefix + ' ' + funcName + ' [parent=f'+ parentFrameID + ']</div>');
+    }
+    else if (myViz.showAllFrameLabels) {
+      d3DomElement.append('<div class="funcObj">' + funcPrefix + ' ' + funcName + ' [parent=Global]</div>');
+    }
+    else {
+      d3DomElement.append('<div class="funcObj">' + funcPrefix + ' ' + funcName + '</div>');
+    }
+  }
+  else if (obj[0] == 'JS_FUNCTION') { /* TODO: refactor me */
+    // JavaScript function
+    assert(obj.length == 5);
+    var funcName = htmlspecialchars(obj[1]);
+    var funcCode = typeLabelPrefix + htmlspecialchars(obj[2]);
+    var funcProperties = obj[3]; // either null or a non-empty list of key-value pairs
+    var parentFrameID = obj[4];
+
+
+    if (funcProperties || parentFrameID || myViz.showAllFrameLabels) {
+      d3DomElement.append('<table class="classTbl"></table>');
+      var tbl = d3DomElement.children('table');
+      tbl.append('<tr><td class="funcCod" colspan="2"><pre class="funcCode">' + funcCode + '</pre>' + '</td></tr>');
+
+      if (funcProperties) {
+        assert(funcProperties.length > 0);
+        $.each(funcProperties, function(ind, kvPair) {
+            tbl.append('<tr class="classEntry"><td class="classKey"></td><td class="classVal"></td></tr>');
+            var newRow = tbl.find('tr:last');
+            var keyTd = newRow.find('td:first');
+            var valTd = newRow.find('td:last');
+            keyTd.append('<span class="keyObj">' + htmlspecialchars(kvPair[0]) + '</span>');
+            myViz.renderNestedObject(kvPair[1], stepNum, valTd);
+        });
+      }
+
+      if (parentFrameID) {
+        tbl.append('<tr class="classEntry"><td class="classKey">parent</td><td class="classVal">' + 'f' + parentFrameID + '</td></tr>');
+      }
+      else if (myViz.showAllFrameLabels) {
+        tbl.append('<tr class="classEntry"><td class="classKey">parent</td><td class="classVal">' + 'global' + '</td></tr>');
+      }
+    }
+    else {
+      // compact form:
+      d3DomElement.append('<pre class="funcCode">' + funcCode + '</pre>');
+    }
+  }
+  else if (obj[0] == 'HEAP_PRIMITIVE') {
+    assert(obj.length == 3);
+
+    var typeName = obj[1];
+    var primitiveVal = obj[2];
+
+    // add a bit of padding to heap primitives, for aesthetics
+    d3DomElement.append('<div class="heapPrimitive"></div>');
+    d3DomElement.find('div.heapPrimitive').append('<div class="typeLabel">' + typeLabelPrefix + typeName + '</div>');
+    myViz.renderPrimitiveObject(primitiveVal, d3DomElement.find('div.heapPrimitive'));
+  }
+  else {
+    // render custom data type
+    assert(obj.length == 2);
+
+    var typeName = obj[0];
+    var strRepr = obj[1];
+
+    strRepr = htmlspecialchars(strRepr); // escape strings!
+
+    d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + typeName + '</div>');
+    d3DomElement.append('<table class="customObjTbl"><tr><td class="customObjElt">' + strRepr + '</td></tr></table>');
+  }
+}
+
+
+ExecutionVisualizer.prototype.redrawConnectors = function() {
+  this.jsPlumbInstance.repaintEverything();
+}
+
+
+ExecutionVisualizer.prototype.getRealLabel = function(label) {
+  if (this.params.lang === 'js' || this.params.lang === 'ts' || this.params.lang === 'ruby') {
+    if (label === 'list') {
+      return 'array';
+    } else if (label === 'instance') {
+      return 'object';
+    } else if (label === 'True') {
+      return 'true';
+    } else if (label === 'False') {
+      return 'false';
+    }
+  }
+
+  if (this.params.lang === 'ruby') {
+    if (label === 'dict') {
+      return 'hash';
+    } else if (label === 'set') {
+      return 'Set'; // the Ruby Set class is capitalized
+    } else if (label === 'function') {
+      return 'method';
+    } else if (label === 'None') {
+      return 'nil';
+    } else if (label === 'Global frame') {
+      return 'Global Object';
+    }
+  }
+
+  // default fallthrough case
+  return label;
+};
+
+
+// Utilities
+
+
+/* colors - see pytutor.css for more colors */
+
+var highlightedLineColor = '#e4faeb';
+var highlightedLineBorderColor = '#005583';
+
+var highlightedLineLighterColor = '#e8fff0';
+
+var funcCallLineColor = '#a2eebd';
+
+var brightRed = '#e93f34';
+
+var connectorBaseColor = '#005583';
+var connectorHighlightColor = brightRed;
+var connectorInactiveColor = '#cccccc';
+
+var errorColor = brightRed;
+
+var breakpointColor = brightRed;
+var hoverBreakpointColor = connectorBaseColor;
+
+
+// Unicode arrow types: '\u21d2', '\u21f0', '\u2907'
+var darkArrowColor = brightRed;
+var lightArrowColor = '#c9e6ca';
+
+
+function assert(cond) {
+  if (!cond) {
+    alert("Assertion Failure (see console log for backtrace)");
+    throw 'Assertion Failure';
+  }
+}
+
+// taken from http://www.toao.net/32-my-htmlspecialchars-function-for-javascript
+function htmlspecialchars(str) {
+  if (typeof(str) == "string") {
+    str = str.replace(/&/g, "&amp;"); /* must do &amp; first */
+
+    // ignore these for now ...
+    //str = str.replace(/"/g, "&quot;");
+    //str = str.replace(/'/g, "&#039;");
+
+    str = str.replace(/</g, "&lt;");
+    str = str.replace(/>/g, "&gt;");
+
+    // replace spaces:
+    str = str.replace(/ /g, "&nbsp;");
+
+    // replace tab as four spaces:
+    str = str.replace(/\t/g, "&nbsp;&nbsp;&nbsp;&nbsp;");
+  }
+  return str;
+}
+
+
+// same as htmlspecialchars except don't worry about expanding spaces or
+// tabs since we want proper word wrapping in divs.
+function htmlsanitize(str) {
+  if (typeof(str) == "string") {
+    str = str.replace(/&/g, "&amp;"); /* must do &amp; first */
+
+    str = str.replace(/</g, "&lt;");
+    str = str.replace(/>/g, "&gt;");
+  }
+  return str;
+}
+
+
+String.prototype.rtrim = function() {
+  return this.replace(/\s*$/g, "");
+}
+
+
+// make sure varname doesn't contain any weird
+// characters that are illegal for CSS ID's ...
+//
+// I know for a fact that iterator tmp variables named '_[1]'
+// are NOT legal names for CSS ID's.
+// I also threw in '{', '}', '(', ')', '<', '>' as illegal characters.
+//
+// also some variable names are like '.0' (for generator expressions),
+// and '.' seems to be illegal.
+//
+// also '=', '!', and '?' are common in Ruby names, so escape those as well
+//
+// also spaces are illegal, so convert to '_'
+// TODO: what other characters are illegal???
+var lbRE = new RegExp('\\[|{|\\(|<', 'g');
+var rbRE = new RegExp('\\]|}|\\)|>', 'g');
+function varnameToCssID(varname) {
+  // make sure to REPLACE ALL (using the 'g' option)
+  // rather than just replacing the first entry
+  return varname.replace(lbRE, 'LeftB_')
+                .replace(rbRE, '_RightB')
+                .replace(/[!]/g, '_BANG_')
+                .replace(/[?]/g, '_QUES_')
+                .replace(/[:]/g, '_COLON_')
+                .replace(/[=]/g, '_EQ_')
+                .replace(/[.]/g, '_DOT_')
+                .replace(/ /g, '_');
+}
+
+
+// compare two JSON-encoded compound objects for structural equivalence:
+ExecutionVisualizer.prototype.structurallyEquivalent = function(obj1, obj2) {
+  // punt if either isn't a compound type
+  if (this.isPrimitiveType(obj1) || this.isPrimitiveType(obj2)) {
+    return false;
+  }
+
+  // must be the same compound type
+  if (obj1[0] != obj2[0]) {
+    return false;
+  }
+
+  // must have the same number of elements or fields
+  if (obj1.length != obj2.length) {
+    return false;
+  }
+
+  // for a list or tuple, same size (e.g., a cons cell is a list/tuple of size 2)
+  if (obj1[0] == 'LIST' || obj1[0] == 'TUPLE') {
+    return true;
+  }
+  else {
+    var startingInd = -1;
+
+    if (obj1[0] == 'DICT') {
+      startingInd = 2;
+    }
+    else if (obj1[0] == 'INSTANCE') {
+      startingInd = 3;
+    }
+    else {
+      return false; // punt on all other types
+    }
+
+    var obj1fields = d3.map();
+
+    // for a dict or object instance, same names of fields (ordering doesn't matter)
+    for (var i = startingInd; i < obj1.length; i++) {
+      obj1fields.set(obj1[i][0], 1); // use as a set
+    }
+
+    for (var i = startingInd; i < obj2.length; i++) {
+      if (!obj1fields.has(obj2[i][0])) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+}
+
+
+ExecutionVisualizer.prototype.isPrimitiveType = function(obj) {
+  var hook_result = this.try_hook("isPrimitiveType", {obj:obj});
+  if (hook_result[0]) return hook_result[1];
+
+  // null is a primitive
+  if (obj === null) {
+    return true;
+  }
+
+  if (typeof obj == "object") {
+    // kludge: only 'SPECIAL_FLOAT' objects count as primitives
+    return (obj[0] == 'SPECIAL_FLOAT' || obj[0] == 'JS_SPECIAL_VAL');
+  }
+  else {
+    // non-objects are primitives
+    return true;
+  }
+}
+
+function getRefID(obj) {
+  assert(obj[0] == 'REF');
+  return obj[1];
+}
+
+
+// Annotation bubbles
+
+var qtipShared = {
+  show: {
+    ready: true, // show on document.ready instead of on mouseenter
+    delay: 0,
+    event: null,
+    effect: function() {$(this).show();}, // don't do any fancy fading because it screws up with scrolling
+  },
+  hide: {
+    fixed: true,
+    event: null,
+    effect: function() {$(this).hide();}, // don't do any fancy fading because it screws up with scrolling
+  },
+  style: {
+    classes: 'ui-tooltip-pgbootstrap', // my own customized version of the bootstrap style
+  },
+};
+
+
+// a speech bubble annotation to attach to:
+//   'codeline' - a line of code
+//   'frame'    - a stack frame
+//   'variable' - a variable within a stack frame
+//   'object'   - an object on the heap
+// (as determined by the 'type' param)
+//
+// domID is the ID of the element to attach to (without the leading '#' sign)
+function AnnotationBubble(parentViz, type, domID) {
+  this.parentViz = parentViz;
+
+  this.domID = domID;
+  this.hashID = '#' + domID;
+
+  this.type = type;
+
+  if (type == 'codeline') {
+    this.my = 'left center';
+    this.at = 'right center';
+  }
+  else if (type == 'frame') {
+    this.my = 'right center';
+    this.at = 'left center';
+  }
+  else if (type == 'variable') {
+    this.my = 'right center';
+    this.at = 'left center';
+  }
+  else if (type == 'object') {
+    this.my = 'bottom left';
+    this.at = 'top center';
+  }
+  else {
+    assert(false);
+  }
+
+  // possible states:
+  //   'invisible'
+  //   'edit'
+  //   'view'
+  //   'minimized'
+  //   'stub'
+  this.state = 'invisible';
+
+  this.text = ''; // the actual contents of the annotation bubble
+
+  this.qtipHidden = false; // is there a qtip object present but hidden? (TODO: kinda confusing)
+}
+
+AnnotationBubble.prototype.showStub = function() {
+  assert(this.state == 'invisible' || this.state == 'edit');
+  assert(this.text == '');
+
+  var myBubble = this; // to avoid name clashes with 'this' in inner scopes
+
+  // destroy then create a new tip:
+  this.destroyQTip();
+  $(this.hashID).qtip($.extend({}, qtipShared, {
+    content: ' ',
+    id: this.domID,
+    position: {
+      my: this.my,
+      at: this.at,
+      adjust: {
+        x: (myBubble.type == 'codeline' ? -6 : 0), // shift codeline tips over a bit for aesthetics
+      },
+      effect: null, // disable all cutesy animations
+    },
+    style: {
+      classes: 'ui-tooltip-pgbootstrap ui-tooltip-pgbootstrap-stub'
+    }
+  }));
+
+
+  $(this.qTipID())
+    .unbind('click') // unbind all old handlers
+    .click(function() {
+      myBubble.showEditor();
+    });
+
+  this.state = 'stub';
+}
+
+AnnotationBubble.prototype.showEditor = function() {
+  assert(this.state == 'stub' || this.state == 'view' || this.state == 'minimized');
+
+  var myBubble = this; // to avoid name clashes with 'this' in inner scopes
+
+  var ta = '<textarea class="bubbleInputText">' + this.text + '</textarea>';
+
+  // destroy then create a new tip:
+  this.destroyQTip();
+  $(this.hashID).qtip($.extend({}, qtipShared, {
+    content: ta,
+    id: this.domID,
+    position: {
+      my: this.my,
+      at: this.at,
+      adjust: {
+        x: (myBubble.type == 'codeline' ? -6 : 0), // shift codeline tips over a bit for aesthetics
+      },
+      effect: null, // disable all cutesy animations
+    }
+  }));
+
+  
+  $(this.qTipContentID()).find('textarea.bubbleInputText')
+    // set handler when the textarea loses focus
+    .blur(function() {
+      myBubble.text = $(this).val().trim(); // strip all leading and trailing spaces
+
+      if (myBubble.text) {
+        myBubble.showViewer();
+      }
+      else {
+        myBubble.showStub();
+      }
+    })
+    .focus(); // grab focus so that the user can start typing right away!
+
+  this.state = 'edit';
+}
+
+
+AnnotationBubble.prototype.bindViewerClickHandler = function() {
+  var myBubble = this;
+
+  $(this.qTipID())
+    .unbind('click') // unbind all old handlers
+    .click(function() {
+      if (myBubble.parentViz.editAnnotationMode) {
+        myBubble.showEditor();
+      }
+      else {
+        myBubble.minimizeViewer();
+      }
+    });
+}
+
+AnnotationBubble.prototype.showViewer = function() {
+  assert(this.state == 'edit' || this.state == 'invisible');
+  assert(this.text); // must be non-empty!
+
+  var myBubble = this;
+  // destroy then create a new tip:
+  this.destroyQTip();
+  $(this.hashID).qtip($.extend({}, qtipShared, {
+    content: htmlsanitize(this.text), // help prevent HTML/JS injection attacks
+    id: this.domID,
+    position: {
+      my: this.my,
+      at: this.at,
+      adjust: {
+        x: (myBubble.type == 'codeline' ? -6 : 0), // shift codeline tips over a bit for aesthetics
+      },
+      effect: null, // disable all cutesy animations
+    }
+  }));
+
+  this.bindViewerClickHandler();
+  this.state = 'view';
+}
+
+
+AnnotationBubble.prototype.minimizeViewer = function() {
+  assert(this.state == 'view');
+
+  var myBubble = this;
+
+  $(this.hashID).qtip('option', 'content.text', ' '); //hack to "minimize" its size
+
+  $(this.qTipID())
+    .unbind('click') // unbind all old handlers
+    .click(function() {
+      if (myBubble.parentViz.editAnnotationMode) {
+        myBubble.showEditor();
+      }
+      else {
+        myBubble.restoreViewer();
+      }
+    });
+
+  this.state = 'minimized';
+}
+
+AnnotationBubble.prototype.restoreViewer = function() {
+  assert(this.state == 'minimized');
+  $(this.hashID).qtip('option', 'content.text', htmlsanitize(this.text)); // help prevent HTML/JS injection attacks
+  this.bindViewerClickHandler();
+  this.state = 'view';
+}
+
+// NB: actually DESTROYS the QTip object
+AnnotationBubble.prototype.makeInvisible = function() {
+  assert(this.state == 'stub' || this.state == 'edit');
+  this.destroyQTip();
+  this.state = 'invisible';
+}
+
+
+AnnotationBubble.prototype.destroyQTip = function() {
+  $(this.hashID).qtip('destroy');
+}
+
+AnnotationBubble.prototype.qTipContentID = function() {
+  return '#ui-tooltip-' + this.domID + '-content';
+}
+
+AnnotationBubble.prototype.qTipID = function() {
+  return '#ui-tooltip-' + this.domID;
+}
+
+
+AnnotationBubble.prototype.enterEditMode = function() {
+  assert(this.parentViz.editAnnotationMode);
+  if (this.state == 'invisible') {
+    this.showStub();
+
+    if (this.type == 'codeline') {
+      this.redrawCodelineBubble();
+    }
+  }
+}
+
+AnnotationBubble.prototype.enterViewMode = function() {
+  assert(!this.parentViz.editAnnotationMode);
+  if (this.state == 'stub') {
+    this.makeInvisible();
+  }
+  else if (this.state == 'edit') {
+    this.text = $(this.qTipContentID()).find('textarea.bubbleInputText').val().trim(); // strip all leading and trailing spaces
+
+    if (this.text) {
+      this.showViewer();
+
+      if (this.type == 'codeline') {
+        this.redrawCodelineBubble();
+      }
+    }
+    else {
+      this.makeInvisible();
+    }
+  }
+  else if (this.state == 'invisible') {
+    // this happens when, say, you first enter View Mode
+    if (this.text) {
+      this.showViewer();
+
+      if (this.type == 'codeline') {
+        this.redrawCodelineBubble();
+      }
+    }
+  }
+}
+
+AnnotationBubble.prototype.preseedText = function(txt) {
+  assert(this.state == 'invisible');
+  this.text = txt;
+}
+
+AnnotationBubble.prototype.redrawCodelineBubble = function() {
+  assert(this.type == 'codeline');
+
+  if (isOutputLineVisibleForBubbles(this.domID)) {
+    if (this.qtipHidden) {
+      $(this.hashID).qtip('show');
+    }
+    else {
+      $(this.hashID).qtip('reposition');
+    }
+
+    this.qtipHidden = false;
+  }
+  else {
+    $(this.hashID).qtip('hide');
+    this.qtipHidden = true;
+  }
+}
+
+AnnotationBubble.prototype.redrawBubble = function() {
+  $(this.hashID).qtip('reposition');
+}
+
+
+// NB: copy-and-paste from isOutputLineVisible with some minor tweaks
+function isOutputLineVisibleForBubbles(lineDivID) {
+  var pcod = $('#pyCodeOutputDiv');
+
+  var lineNoTd = $('#' + lineDivID);
+  var LO = lineNoTd.offset().top;
+
+  var PO = pcod.offset().top;
+  var ST = pcod.scrollTop();
+  var H = pcod.height();
+
+  // add a few pixels of fudge factor on the bottom end due to bottom scrollbar
+  return (PO <= LO) && (LO < (PO + H - 25));
+}
+
+
+// popup question dialog code from Brad Miller
+
+// inputId is the ID of the input element
+// divId is the div that containsthe visualizer
+// answer is a dotted form of an attribute that lives in the curEntry of the trace
+// So if we want to ask for the value of a global variable we would say 'globals.a'
+// this allows us do do curTrace[i].globals.a  But we do it in the loop below using the
+// [] operator.
+function traceQCheckMe(inputId, divId, answer) {
+   var vis = $("#"+divId).data("vis")
+   var i = vis.curInstr
+   var curEntry = vis.curTrace[i+1];
+   var ans = $('#'+inputId).val()
+   var attrs = answer.split(".")
+   var correctAns = curEntry;
+   for (j in attrs) {
+       correctAns = correctAns[attrs[j]]
+   }
+   feedbackElement = $("#" + divId + "_feedbacktext")
+   if (ans.length > 0 && ans == correctAns) {
+       feedbackElement.html('Correct')
+   } else {
+       feedbackElement.html(vis.curTrace[i].question.feedback)
+   }
+
+}
+
+function closeModal(divId) {
+    $.modal.close()
+    $("#"+divId).data("vis").stepForward();
+}
+
+
+// All of the Java frontend code in this function was written by David
+// Pritchard and Will Gwozdz, and integrated by Philip Guo
+ExecutionVisualizer.prototype.activateJavaFrontend = function() {
+  // super hack by Philip that reverses the direction of the stack so
+  // that it grows DOWN and renders the same way as the Python and JS
+  // visualizer stacks
+  this.curTrace.forEach(function(e, i) {
+    if (e.stack_to_render !== undefined) {
+      e.stack_to_render.reverse();
+    }
+  });
+
+  this.add_pytutor_hook(
+    "renderPrimitiveObject",
+    function(args) {
+      var obj = args.obj, d3DomElement = args.d3DomElement;
+      var typ = typeof obj;
+      if (obj == null) 
+        d3DomElement.append('<span class="nullObj">null</span>');
+      else if (typ == "number") 
+        d3DomElement.append('<span class="numberObj">' + obj + '</span>');
+      else if (typ == "boolean") {
+        if (obj) 
+          d3DomElement.append('<span class="boolObj">true</span>');
+        else 
+          d3DomElement.append('<span class="boolObj">false</span>');
+      }
+      else if (obj instanceof Array && obj[0] == "VOID") {
+        d3DomElement.append('<span class="voidObj">void</span>');
+      }
+      else if (obj instanceof Array && obj[0] == "NUMBER-LITERAL") {
+        // actually transmitted as a string
+        d3DomElement.append('<span class="numberObj">' + obj[1] + '</span>');
+      }
+      else if (obj instanceof Array && obj[0] == "CHAR-LITERAL") {
+        var asc = obj[1].charCodeAt(0);
+        var ch = obj[1];
+        
+        // default
+        var show = asc.toString(16);
+        while (show.length < 4) show = "0" + show;
+        show = "\\u" + show;
+        
+        if (ch == "\n") show = "\\n";
+        else if (ch == "\r") show = "\\r";
+        else if (ch == "\t") show = "\\t";
+        else if (ch == "\b") show = "\\b";
+        else if (ch == "\f") show = "\\f";
+        else if (ch == "\'") show = "\\\'";
+        else if (ch == "\"") show = "\\\"";
+        else if (ch == "\\") show = "\\\\";
+        else if (asc >= 32) show = ch;
+        
+        // stringObj to make monospace
+        d3DomElement.append('<span class="stringObj">\'' + show + '\'</span>');
+      }
+      else
+        return [false]; // we didn't handle it
+      return [true]; // we handled it
+    });
+
+  this.add_pytutor_hook(
+    "isPrimitiveType", 
+    function(args) {
+      var obj = args.obj;
+      if ((obj instanceof Array && obj[0] == "VOID")
+          || (obj instanceof Array && obj[0] == "NUMBER-LITERAL")
+          || (obj instanceof Array && obj[0] == "CHAR-LITERAL")
+          || (obj instanceof Array && obj[0] == "ELIDE"))
+        return [true, true]; // we handled it, it's primitive
+      return [false]; // didn't handle it
+    });
+
+  this.add_pytutor_hook(
+    "end_updateOutput",
+    function(args) {
+      var myViz = args.myViz;
+      var curEntry = myViz.curTrace[myViz.curInstr];
+      if (myViz.params.stdin && myViz.params.stdin != "") {
+        var stdinPosition = curEntry.stdinPosition || 0;
+        var stdinContent =
+          '<span style="color:lightgray;text-decoration: line-through">'+
+          escapeHtml(myViz.params.stdin.substr(0, stdinPosition))+
+          '</span>'+
+          escapeHtml(myViz.params.stdin.substr(stdinPosition));
+        myViz.domRoot.find('#stdinShow').html(stdinContent);
+      }
+      return [false]; 
+    });
+
+  this.add_pytutor_hook(
+    "end_constructor",
+    function(args) {
+      var myViz = args.myViz;
+      if ((myViz.curTrace.length > 0)
+          && myViz.curTrace[myViz.curTrace.length-1]
+          && myViz.curTrace[myViz.curTrace.length-1].stdout) {
+        myViz.hasStdout = true;
+        myViz.stdoutLines = myViz.curTrace[myViz.curTrace.length-1].stdout.split("\n").length;
+      }
+      // if last frame is a step limit
+      else if ((myViz.curTrace.length > 1)
+               && myViz.curTrace[myViz.curTrace.length-2]
+               && myViz.curTrace[myViz.curTrace.length-2].stdout) {
+        myViz.hasStdout = true;
+        myViz.stdoutLines = myViz.curTrace[myViz.curTrace.length-2].stdout.split("\n").length;
+      }
+      else {
+        myViz.stdoutLines = -1;
+      }
+      if (myViz.hasStdout)
+        for (var i=0; i<myViz.curTrace.length; i++)
+          if (!(myViz.curTrace[i].stdout))
+              myViz.curTrace[i].stdout=" "; // always show it, if it's ever used      
+    });
+
+  this.add_pytutor_hook(
+    "end_render",
+    function(args) {
+      var myViz = args.myViz;
+      //myViz.domRoot.find('#pyStdout').attr('cols', 1); // commented out by pgbovine
+      myViz.domRoot.find('#pyStdout').attr('rows', Math.min(10, myViz.stdoutLines));
+      
+      if (myViz.params.stdin && myViz.params.stdin != "") {
+        var stdinHTML = '<div id="stdinWrap">stdin:<pre id="stdinShow" style="border:1px solid gray"></pre></div>';
+        myViz.domRoot.find('#dataViz').append(stdinHTML);
+      }
+
+      myViz.domRoot.find('#'+myViz.generateID('globals_header')).html("Static fields");
+    });
+
+  this.add_pytutor_hook(
+    "isLinearObject",
+    function(args) {
+      var heapObj = args.heapObj;
+      if (heapObj[0]=='STACK' || heapObj[0]=='QUEUE')
+        return ['true', 'true'];
+      return ['false'];
+    });
+
+  this.add_pytutor_hook(
+    "renderCompoundObject",
+    function(args) {
+      var objID = args.objID;
+      var d3DomElement = args.d3DomElement;
+      var obj = args.obj;
+      var typeLabelPrefix = args.typeLabelPrefix;
+      var myViz = args.myViz;
+      var stepNum = args.stepNum;
+
+      if (!(obj[0] == 'LIST' || obj[0] == 'QUEUE' || obj[0] == 'STACK')) 
+        return [false]; // didn't handle
+
+      var label = obj[0].toLowerCase();
+      var visibleLabel = {list:'array', queue:'queue', stack:'stack'}[label];
+      
+      if (obj.length == 1) {
+        d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + 'empty ' + visibleLabel + '</div>');
+        return [true]; //handled
+      }
+
+      d3DomElement.append('<div class="typeLabel">' + typeLabelPrefix + visibleLabel + '</div>');
+      d3DomElement.append('<table class="' + label + 'Tbl"></table>');
+      var tbl = d3DomElement.children('table');
+      
+      if (obj[0] == 'LIST') {
+        tbl.append('<tr></tr><tr></tr>');
+        var headerTr = tbl.find('tr:first');
+        var contentTr = tbl.find('tr:last');
+        
+        // i: actual index in json object; ind: apparent index
+        for (var i=1, ind=0; i<obj.length; i++) {
+          val = obj[i];
+          var elide = val instanceof Array && val[0] == 'ELIDE';
+          
+          // add a new column and then pass in that newly-added column
+          // as d3DomElement to the recursive call to child:
+          headerTr.append('<td class="' + label + 'Header"></td>');
+          headerTr.find('td:last').append(elide ? "&hellip;" : ind);
+          
+          contentTr.append('<td class="'+ label + 'Elt"></td>');
+          if (!elide) {
+            myViz.renderNestedObject(val, stepNum, contentTr.find('td:last'));
+            ind++;
+          }
+          else {
+            contentTr.find('td:last').append("&hellip;");
+            ind += val[1]; // val[1] is the number of cells to skip
+          }
+        }
+      } // end of LIST handling
+
+     // Stack and Queue handling code by Will Gwozdz
+      /* The table produced for stacks and queues is formed slightly differently than the others,
+     missing the header row. Two rows made the dashed border not line up properly */
+      if (obj[0] == 'STACK') { 
+        tbl.append('<tr></tr><tr></tr>');
+        var contentTr = tbl.find('tr:last');
+        contentTr.append('<td class="'+ label + 'FElt">'+'<span class="stringObj symbolic">&#8596;</span>'+'</td>');
+        $.each(obj, function(ind, val) {
+          if (ind < 1) return; // skip type tag and ID entry
+          contentTr.append('<td class="'+ label + 'Elt"></td>');
+          myViz.renderNestedObject(val, stepNum, contentTr.find('td:last'));
+        });
+        contentTr.append('<td class="'+ label + 'LElt">'+'</td>');
+      }
+      
+      if (obj[0] == 'QUEUE') { 
+        tbl.append('<tr></tr><tr></tr>');
+        var contentTr = tbl.find('tr:last');    
+        // Add arrows showing in/out direction
+        contentTr.append('<td class="'+ label + 'FElt">'+'<span class="stringObj symbolic">&#8592;</span></td>');    
+        $.each(obj, function(ind, val) {
+          if (ind < 1) return; // skip type tag and ID entry
+          contentTr.append('<td class="'+ label + 'Elt"></td>');
+          myViz.renderNestedObject(val, stepNum, contentTr.find('td:last'));
+        });
+        contentTr.append('<td class="'+ label + 'LElt">'+'<span class="stringObj symbolic">&#8592;</span></td>');    
+      }
+
+      return [true]; // did handle
+    });
+
+  this.add_pytutor_hook(
+    "end_renderDataStructures",
+    function(args) {
+      var myViz = args.myViz;
+      myViz.domRoot.find("td.instKey:contains('___NO_LABEL!___')").hide();
+      myViz.domRoot.find(".typeLabel:contains('dict')").each(
+        function(i) {
+          if ($(this).html()=='dict')
+            $(this).html('symbol table');
+          if ($(this).html()=='empty dict')
+            $(this).html('empty symbol table');
+        });
+    });
+
+  // java synthetics cause things which javascript doesn't like in an id
+  var old_generateID = ExecutionVisualizer.prototype.generateID;
+  this.generateID = function(original_id) {
+    var sanitized = original_id.replace(
+        /[^0-9a-zA-Z_]/g,
+      function(match) {return '-'+match.charCodeAt(0)+'-';}
+    );
+    return old_generateID(sanitized);
+  }
+
+  // utility functions
+  var entityMap = {
+    "&": "&amp;",
+    "<": "&lt;",
+    ">": "&gt;",
+    '"': '&quot;',
+    "'": '&#39;',
+    "/": '&#x2F;'
+  };
+
+  var escapeHtml = function(string) {
+    return String(string).replace(/[&<>"'\/]/g, function (s) {
+        return entityMap[s];
+      });
+  };
+
+}
diff --git a/v3/js/socket.io-client/socket.io.js b/v3/js/socket.io-client/socket.io.js
new file mode 100644
index 000000000..d74bacf18
--- /dev/null
+++ b/v3/js/socket.io-client/socket.io.js
@@ -0,0 +1,6932 @@
+!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.io=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
+
+module.exports = _dereq_('./lib/');
+
+},{"./lib/":2}],2:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var url = _dereq_('./url');
+var parser = _dereq_('socket.io-parser');
+var Manager = _dereq_('./manager');
+var debug = _dereq_('debug')('socket.io-client');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = lookup;
+
+/**
+ * Managers cache.
+ */
+
+var cache = exports.managers = {};
+
+/**
+ * Looks up an existing `Manager` for multiplexing.
+ * If the user summons:
+ *
+ *   `io('http://localhost/a');`
+ *   `io('http://localhost/b');`
+ *
+ * We reuse the existing instance based on same scheme/port/host,
+ * and we initialize sockets for each namespace.
+ *
+ * @api public
+ */
+
+function lookup(uri, opts) {
+  if (typeof uri == 'object') {
+    opts = uri;
+    uri = undefined;
+  }
+
+  opts = opts || {};
+
+  var parsed = url(uri);
+  var source = parsed.source;
+  var id = parsed.id;
+  var io;
+
+  if (opts.forceNew || opts['force new connection'] || false === opts.multiplex) {
+    debug('ignoring socket cache for %s', source);
+    io = Manager(source, opts);
+  } else {
+    if (!cache[id]) {
+      debug('new io instance for %s', source);
+      cache[id] = Manager(source, opts);
+    }
+    io = cache[id];
+  }
+
+  return io.socket(parsed.path);
+}
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+exports.protocol = parser.protocol;
+
+/**
+ * `connect`.
+ *
+ * @param {String} uri
+ * @api public
+ */
+
+exports.connect = lookup;
+
+/**
+ * Expose constructors for standalone build.
+ *
+ * @api public
+ */
+
+exports.Manager = _dereq_('./manager');
+exports.Socket = _dereq_('./socket');
+
+},{"./manager":3,"./socket":5,"./url":6,"debug":10,"socket.io-parser":44}],3:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var url = _dereq_('./url');
+var eio = _dereq_('engine.io-client');
+var Socket = _dereq_('./socket');
+var Emitter = _dereq_('component-emitter');
+var parser = _dereq_('socket.io-parser');
+var on = _dereq_('./on');
+var bind = _dereq_('component-bind');
+var object = _dereq_('object-component');
+var debug = _dereq_('debug')('socket.io-client:manager');
+var indexOf = _dereq_('indexof');
+var Backoff = _dereq_('backo2');
+
+/**
+ * Module exports
+ */
+
+module.exports = Manager;
+
+/**
+ * `Manager` constructor.
+ *
+ * @param {String} engine instance or engine uri/opts
+ * @param {Object} options
+ * @api public
+ */
+
+function Manager(uri, opts){
+  if (!(this instanceof Manager)) return new Manager(uri, opts);
+  if (uri && ('object' == typeof uri)) {
+    opts = uri;
+    uri = undefined;
+  }
+  opts = opts || {};
+
+  opts.path = opts.path || '/socket.io';
+  this.nsps = {};
+  this.subs = [];
+  this.opts = opts;
+  this.reconnection(opts.reconnection !== false);
+  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
+  this.reconnectionDelay(opts.reconnectionDelay || 1000);
+  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
+  this.randomizationFactor(opts.randomizationFactor || 0.5);
+  this.backoff = new Backoff({
+    min: this.reconnectionDelay(),
+    max: this.reconnectionDelayMax(),
+    jitter: this.randomizationFactor()
+  });
+  this.timeout(null == opts.timeout ? 20000 : opts.timeout);
+  this.readyState = 'closed';
+  this.uri = uri;
+  this.connected = [];
+  this.encoding = false;
+  this.packetBuffer = [];
+  this.encoder = new parser.Encoder();
+  this.decoder = new parser.Decoder();
+  this.autoConnect = opts.autoConnect !== false;
+  if (this.autoConnect) this.open();
+}
+
+/**
+ * Propagate given event to sockets and emit on `this`
+ *
+ * @api private
+ */
+
+Manager.prototype.emitAll = function() {
+  this.emit.apply(this, arguments);
+  for (var nsp in this.nsps) {
+    this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
+  }
+};
+
+/**
+ * Update `socket.id` of all sockets
+ *
+ * @api private
+ */
+
+Manager.prototype.updateSocketIds = function(){
+  for (var nsp in this.nsps) {
+    this.nsps[nsp].id = this.engine.id;
+  }
+};
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Manager.prototype);
+
+/**
+ * Sets the `reconnection` config.
+ *
+ * @param {Boolean} true/false if it should automatically reconnect
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnection = function(v){
+  if (!arguments.length) return this._reconnection;
+  this._reconnection = !!v;
+  return this;
+};
+
+/**
+ * Sets the reconnection attempts config.
+ *
+ * @param {Number} max reconnection attempts before giving up
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionAttempts = function(v){
+  if (!arguments.length) return this._reconnectionAttempts;
+  this._reconnectionAttempts = v;
+  return this;
+};
+
+/**
+ * Sets the delay between reconnections.
+ *
+ * @param {Number} delay
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionDelay = function(v){
+  if (!arguments.length) return this._reconnectionDelay;
+  this._reconnectionDelay = v;
+  this.backoff && this.backoff.setMin(v);
+  return this;
+};
+
+Manager.prototype.randomizationFactor = function(v){
+  if (!arguments.length) return this._randomizationFactor;
+  this._randomizationFactor = v;
+  this.backoff && this.backoff.setJitter(v);
+  return this;
+};
+
+/**
+ * Sets the maximum delay between reconnections.
+ *
+ * @param {Number} delay
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionDelayMax = function(v){
+  if (!arguments.length) return this._reconnectionDelayMax;
+  this._reconnectionDelayMax = v;
+  this.backoff && this.backoff.setMax(v);
+  return this;
+};
+
+/**
+ * Sets the connection timeout. `false` to disable
+ *
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.timeout = function(v){
+  if (!arguments.length) return this._timeout;
+  this._timeout = v;
+  return this;
+};
+
+/**
+ * Starts trying to reconnect if reconnection is enabled and we have not
+ * started reconnecting yet
+ *
+ * @api private
+ */
+
+Manager.prototype.maybeReconnectOnOpen = function() {
+  // Only try to reconnect if it's the first time we're connecting
+  if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {
+    // keeps reconnection from firing twice for the same reconnection loop
+    this.reconnect();
+  }
+};
+
+
+/**
+ * Sets the current transport `socket`.
+ *
+ * @param {Function} optional, callback
+ * @return {Manager} self
+ * @api public
+ */
+
+Manager.prototype.open =
+Manager.prototype.connect = function(fn){
+  debug('readyState %s', this.readyState);
+  if (~this.readyState.indexOf('open')) return this;
+
+  debug('opening %s', this.uri);
+  this.engine = eio(this.uri, this.opts);
+  var socket = this.engine;
+  var self = this;
+  this.readyState = 'opening';
+  this.skipReconnect = false;
+
+  // emit `open`
+  var openSub = on(socket, 'open', function() {
+    self.onopen();
+    fn && fn();
+  });
+
+  // emit `connect_error`
+  var errorSub = on(socket, 'error', function(data){
+    debug('connect_error');
+    self.cleanup();
+    self.readyState = 'closed';
+    self.emitAll('connect_error', data);
+    if (fn) {
+      var err = new Error('Connection error');
+      err.data = data;
+      fn(err);
+    } else {
+      // Only do this if there is no fn to handle the error
+      self.maybeReconnectOnOpen();
+    }
+  });
+
+  // emit `connect_timeout`
+  if (false !== this._timeout) {
+    var timeout = this._timeout;
+    debug('connect attempt will timeout after %d', timeout);
+
+    // set timer
+    var timer = setTimeout(function(){
+      debug('connect attempt timed out after %d', timeout);
+      openSub.destroy();
+      socket.close();
+      socket.emit('error', 'timeout');
+      self.emitAll('connect_timeout', timeout);
+    }, timeout);
+
+    this.subs.push({
+      destroy: function(){
+        clearTimeout(timer);
+      }
+    });
+  }
+
+  this.subs.push(openSub);
+  this.subs.push(errorSub);
+
+  return this;
+};
+
+/**
+ * Called upon transport open.
+ *
+ * @api private
+ */
+
+Manager.prototype.onopen = function(){
+  debug('open');
+
+  // clear old subs
+  this.cleanup();
+
+  // mark as open
+  this.readyState = 'open';
+  this.emit('open');
+
+  // add new subs
+  var socket = this.engine;
+  this.subs.push(on(socket, 'data', bind(this, 'ondata')));
+  this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
+  this.subs.push(on(socket, 'error', bind(this, 'onerror')));
+  this.subs.push(on(socket, 'close', bind(this, 'onclose')));
+};
+
+/**
+ * Called with data.
+ *
+ * @api private
+ */
+
+Manager.prototype.ondata = function(data){
+  this.decoder.add(data);
+};
+
+/**
+ * Called when parser fully decodes a packet.
+ *
+ * @api private
+ */
+
+Manager.prototype.ondecoded = function(packet) {
+  this.emit('packet', packet);
+};
+
+/**
+ * Called upon socket error.
+ *
+ * @api private
+ */
+
+Manager.prototype.onerror = function(err){
+  debug('error', err);
+  this.emitAll('error', err);
+};
+
+/**
+ * Creates a new socket for the given `nsp`.
+ *
+ * @return {Socket}
+ * @api public
+ */
+
+Manager.prototype.socket = function(nsp){
+  var socket = this.nsps[nsp];
+  if (!socket) {
+    socket = new Socket(this, nsp);
+    this.nsps[nsp] = socket;
+    var self = this;
+    socket.on('connect', function(){
+      socket.id = self.engine.id;
+      if (!~indexOf(self.connected, socket)) {
+        self.connected.push(socket);
+      }
+    });
+  }
+  return socket;
+};
+
+/**
+ * Called upon a socket close.
+ *
+ * @param {Socket} socket
+ */
+
+Manager.prototype.destroy = function(socket){
+  var index = indexOf(this.connected, socket);
+  if (~index) this.connected.splice(index, 1);
+  if (this.connected.length) return;
+
+  this.close();
+};
+
+/**
+ * Writes a packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Manager.prototype.packet = function(packet){
+  debug('writing packet %j', packet);
+  var self = this;
+
+  if (!self.encoding) {
+    // encode, then write to engine with result
+    self.encoding = true;
+    this.encoder.encode(packet, function(encodedPackets) {
+      for (var i = 0; i < encodedPackets.length; i++) {
+        self.engine.write(encodedPackets[i]);
+      }
+      self.encoding = false;
+      self.processPacketQueue();
+    });
+  } else { // add packet to the queue
+    self.packetBuffer.push(packet);
+  }
+};
+
+/**
+ * If packet buffer is non-empty, begins encoding the
+ * next packet in line.
+ *
+ * @api private
+ */
+
+Manager.prototype.processPacketQueue = function() {
+  if (this.packetBuffer.length > 0 && !this.encoding) {
+    var pack = this.packetBuffer.shift();
+    this.packet(pack);
+  }
+};
+
+/**
+ * Clean up transport subscriptions and packet buffer.
+ *
+ * @api private
+ */
+
+Manager.prototype.cleanup = function(){
+  var sub;
+  while (sub = this.subs.shift()) sub.destroy();
+
+  this.packetBuffer = [];
+  this.encoding = false;
+
+  this.decoder.destroy();
+};
+
+/**
+ * Close the current socket.
+ *
+ * @api private
+ */
+
+Manager.prototype.close =
+Manager.prototype.disconnect = function(){
+  this.skipReconnect = true;
+  this.backoff.reset();
+  this.readyState = 'closed';
+  this.engine && this.engine.close();
+};
+
+/**
+ * Called upon engine close.
+ *
+ * @api private
+ */
+
+Manager.prototype.onclose = function(reason){
+  debug('close');
+  this.cleanup();
+  this.backoff.reset();
+  this.readyState = 'closed';
+  this.emit('close', reason);
+  if (this._reconnection && !this.skipReconnect) {
+    this.reconnect();
+  }
+};
+
+/**
+ * Attempt a reconnection.
+ *
+ * @api private
+ */
+
+Manager.prototype.reconnect = function(){
+  if (this.reconnecting || this.skipReconnect) return this;
+
+  var self = this;
+
+  if (this.backoff.attempts >= this._reconnectionAttempts) {
+    debug('reconnect failed');
+    this.backoff.reset();
+    this.emitAll('reconnect_failed');
+    this.reconnecting = false;
+  } else {
+    var delay = this.backoff.duration();
+    debug('will wait %dms before reconnect attempt', delay);
+
+    this.reconnecting = true;
+    var timer = setTimeout(function(){
+      if (self.skipReconnect) return;
+
+      debug('attempting reconnect');
+      self.emitAll('reconnect_attempt', self.backoff.attempts);
+      self.emitAll('reconnecting', self.backoff.attempts);
+
+      // check again for the case socket closed in above events
+      if (self.skipReconnect) return;
+
+      self.open(function(err){
+        if (err) {
+          debug('reconnect attempt error');
+          self.reconnecting = false;
+          self.reconnect();
+          self.emitAll('reconnect_error', err.data);
+        } else {
+          debug('reconnect success');
+          self.onreconnect();
+        }
+      });
+    }, delay);
+
+    this.subs.push({
+      destroy: function(){
+        clearTimeout(timer);
+      }
+    });
+  }
+};
+
+/**
+ * Called upon successful reconnect.
+ *
+ * @api private
+ */
+
+Manager.prototype.onreconnect = function(){
+  var attempt = this.backoff.attempts;
+  this.reconnecting = false;
+  this.backoff.reset();
+  this.updateSocketIds();
+  this.emitAll('reconnect', attempt);
+};
+
+},{"./on":4,"./socket":5,"./url":6,"backo2":7,"component-bind":8,"component-emitter":9,"debug":10,"engine.io-client":11,"indexof":40,"object-component":41,"socket.io-parser":44}],4:[function(_dereq_,module,exports){
+
+/**
+ * Module exports.
+ */
+
+module.exports = on;
+
+/**
+ * Helper for subscriptions.
+ *
+ * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`
+ * @param {String} event name
+ * @param {Function} callback
+ * @api public
+ */
+
+function on(obj, ev, fn) {
+  obj.on(ev, fn);
+  return {
+    destroy: function(){
+      obj.removeListener(ev, fn);
+    }
+  };
+}
+
+},{}],5:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var parser = _dereq_('socket.io-parser');
+var Emitter = _dereq_('component-emitter');
+var toArray = _dereq_('to-array');
+var on = _dereq_('./on');
+var bind = _dereq_('component-bind');
+var debug = _dereq_('debug')('socket.io-client:socket');
+var hasBin = _dereq_('has-binary');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = Socket;
+
+/**
+ * Internal events (blacklisted).
+ * These events can't be emitted by the user.
+ *
+ * @api private
+ */
+
+var events = {
+  connect: 1,
+  connect_error: 1,
+  connect_timeout: 1,
+  disconnect: 1,
+  error: 1,
+  reconnect: 1,
+  reconnect_attempt: 1,
+  reconnect_failed: 1,
+  reconnect_error: 1,
+  reconnecting: 1
+};
+
+/**
+ * Shortcut to `Emitter#emit`.
+ */
+
+var emit = Emitter.prototype.emit;
+
+/**
+ * `Socket` constructor.
+ *
+ * @api public
+ */
+
+function Socket(io, nsp){
+  this.io = io;
+  this.nsp = nsp;
+  this.json = this; // compat
+  this.ids = 0;
+  this.acks = {};
+  if (this.io.autoConnect) this.open();
+  this.receiveBuffer = [];
+  this.sendBuffer = [];
+  this.connected = false;
+  this.disconnected = true;
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Subscribe to open, close and packet events
+ *
+ * @api private
+ */
+
+Socket.prototype.subEvents = function() {
+  if (this.subs) return;
+
+  var io = this.io;
+  this.subs = [
+    on(io, 'open', bind(this, 'onopen')),
+    on(io, 'packet', bind(this, 'onpacket')),
+    on(io, 'close', bind(this, 'onclose'))
+  ];
+};
+
+/**
+ * "Opens" the socket.
+ *
+ * @api public
+ */
+
+Socket.prototype.open =
+Socket.prototype.connect = function(){
+  if (this.connected) return this;
+
+  this.subEvents();
+  this.io.open(); // ensure open
+  if ('open' == this.io.readyState) this.onopen();
+  return this;
+};
+
+/**
+ * Sends a `message` event.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.send = function(){
+  var args = toArray(arguments);
+  args.unshift('message');
+  this.emit.apply(this, args);
+  return this;
+};
+
+/**
+ * Override `emit`.
+ * If the event is in `events`, it's emitted normally.
+ *
+ * @param {String} event name
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.emit = function(ev){
+  if (events.hasOwnProperty(ev)) {
+    emit.apply(this, arguments);
+    return this;
+  }
+
+  var args = toArray(arguments);
+  var parserType = parser.EVENT; // default
+  if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary
+  var packet = { type: parserType, data: args };
+
+  // event ack callback
+  if ('function' == typeof args[args.length - 1]) {
+    debug('emitting packet with ack id %d', this.ids);
+    this.acks[this.ids] = args.pop();
+    packet.id = this.ids++;
+  }
+
+  if (this.connected) {
+    this.packet(packet);
+  } else {
+    this.sendBuffer.push(packet);
+  }
+
+  return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.packet = function(packet){
+  packet.nsp = this.nsp;
+  this.io.packet(packet);
+};
+
+/**
+ * Called upon engine `open`.
+ *
+ * @api private
+ */
+
+Socket.prototype.onopen = function(){
+  debug('transport is open - connecting');
+
+  // write connect packet if necessary
+  if ('/' != this.nsp) {
+    this.packet({ type: parser.CONNECT });
+  }
+};
+
+/**
+ * Called upon engine `close`.
+ *
+ * @param {String} reason
+ * @api private
+ */
+
+Socket.prototype.onclose = function(reason){
+  debug('close (%s)', reason);
+  this.connected = false;
+  this.disconnected = true;
+  delete this.id;
+  this.emit('disconnect', reason);
+};
+
+/**
+ * Called with socket packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onpacket = function(packet){
+  if (packet.nsp != this.nsp) return;
+
+  switch (packet.type) {
+    case parser.CONNECT:
+      this.onconnect();
+      break;
+
+    case parser.EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.BINARY_EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.ACK:
+      this.onack(packet);
+      break;
+
+    case parser.BINARY_ACK:
+      this.onack(packet);
+      break;
+
+    case parser.DISCONNECT:
+      this.ondisconnect();
+      break;
+
+    case parser.ERROR:
+      this.emit('error', packet.data);
+      break;
+  }
+};
+
+/**
+ * Called upon a server event.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onevent = function(packet){
+  var args = packet.data || [];
+  debug('emitting event %j', args);
+
+  if (null != packet.id) {
+    debug('attaching ack callback to event');
+    args.push(this.ack(packet.id));
+  }
+
+  if (this.connected) {
+    emit.apply(this, args);
+  } else {
+    this.receiveBuffer.push(args);
+  }
+};
+
+/**
+ * Produces an ack callback to emit with an event.
+ *
+ * @api private
+ */
+
+Socket.prototype.ack = function(id){
+  var self = this;
+  var sent = false;
+  return function(){
+    // prevent double callbacks
+    if (sent) return;
+    sent = true;
+    var args = toArray(arguments);
+    debug('sending ack %j', args);
+
+    var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;
+    self.packet({
+      type: type,
+      id: id,
+      data: args
+    });
+  };
+};
+
+/**
+ * Called upon a server acknowlegement.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onack = function(packet){
+  debug('calling ack %s with %j', packet.id, packet.data);
+  var fn = this.acks[packet.id];
+  fn.apply(this, packet.data);
+  delete this.acks[packet.id];
+};
+
+/**
+ * Called upon server connect.
+ *
+ * @api private
+ */
+
+Socket.prototype.onconnect = function(){
+  this.connected = true;
+  this.disconnected = false;
+  this.emit('connect');
+  this.emitBuffered();
+};
+
+/**
+ * Emit buffered events (received and emitted).
+ *
+ * @api private
+ */
+
+Socket.prototype.emitBuffered = function(){
+  var i;
+  for (i = 0; i < this.receiveBuffer.length; i++) {
+    emit.apply(this, this.receiveBuffer[i]);
+  }
+  this.receiveBuffer = [];
+
+  for (i = 0; i < this.sendBuffer.length; i++) {
+    this.packet(this.sendBuffer[i]);
+  }
+  this.sendBuffer = [];
+};
+
+/**
+ * Called upon server disconnect.
+ *
+ * @api private
+ */
+
+Socket.prototype.ondisconnect = function(){
+  debug('server disconnect (%s)', this.nsp);
+  this.destroy();
+  this.onclose('io server disconnect');
+};
+
+/**
+ * Called upon forced client/server side disconnections,
+ * this method ensures the manager stops tracking us and
+ * that reconnections don't get triggered for this.
+ *
+ * @api private.
+ */
+
+Socket.prototype.destroy = function(){
+  if (this.subs) {
+    // clean subscriptions to avoid reconnections
+    for (var i = 0; i < this.subs.length; i++) {
+      this.subs[i].destroy();
+    }
+    this.subs = null;
+  }
+
+  this.io.destroy(this);
+};
+
+/**
+ * Disconnects the socket manually.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.close =
+Socket.prototype.disconnect = function(){
+  if (this.connected) {
+    debug('performing disconnect (%s)', this.nsp);
+    this.packet({ type: parser.DISCONNECT });
+  }
+
+  // remove socket from pool
+  this.destroy();
+
+  if (this.connected) {
+    // fire events
+    this.onclose('io client disconnect');
+  }
+  return this;
+};
+
+},{"./on":4,"component-bind":8,"component-emitter":9,"debug":10,"has-binary":36,"socket.io-parser":44,"to-array":48}],6:[function(_dereq_,module,exports){
+(function (global){
+
+/**
+ * Module dependencies.
+ */
+
+var parseuri = _dereq_('parseuri');
+var debug = _dereq_('debug')('socket.io-client:url');
+
+/**
+ * Module exports.
+ */
+
+module.exports = url;
+
+/**
+ * URL parser.
+ *
+ * @param {String} url
+ * @param {Object} An object meant to mimic window.location.
+ *                 Defaults to window.location.
+ * @api public
+ */
+
+function url(uri, loc){
+  var obj = uri;
+
+  // default to window.location
+  var loc = loc || global.location;
+  if (null == uri) uri = loc.protocol + '//' + loc.host;
+
+  // relative path support
+  if ('string' == typeof uri) {
+    if ('/' == uri.charAt(0)) {
+      if ('/' == uri.charAt(1)) {
+        uri = loc.protocol + uri;
+      } else {
+        uri = loc.hostname + uri;
+      }
+    }
+
+    if (!/^(https?|wss?):\/\//.test(uri)) {
+      debug('protocol-less url %s', uri);
+      if ('undefined' != typeof loc) {
+        uri = loc.protocol + '//' + uri;
+      } else {
+        uri = 'https://' + uri;
+      }
+    }
+
+    // parse
+    debug('parse %s', uri);
+    obj = parseuri(uri);
+  }
+
+  // make sure we treat `localhost:80` and `localhost` equally
+  if (!obj.port) {
+    if (/^(http|ws)$/.test(obj.protocol)) {
+      obj.port = '80';
+    }
+    else if (/^(http|ws)s$/.test(obj.protocol)) {
+      obj.port = '443';
+    }
+  }
+
+  obj.path = obj.path || '/';
+
+  // define unique id
+  obj.id = obj.protocol + '://' + obj.host + ':' + obj.port;
+  // define href
+  obj.href = obj.protocol + '://' + obj.host + (loc && loc.port == obj.port ? '' : (':' + obj.port));
+
+  return obj;
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"debug":10,"parseuri":42}],7:[function(_dereq_,module,exports){
+
+/**
+ * Expose `Backoff`.
+ */
+
+module.exports = Backoff;
+
+/**
+ * Initialize backoff timer with `opts`.
+ *
+ * - `min` initial timeout in milliseconds [100]
+ * - `max` max timeout [10000]
+ * - `jitter` [0]
+ * - `factor` [2]
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+function Backoff(opts) {
+  opts = opts || {};
+  this.ms = opts.min || 100;
+  this.max = opts.max || 10000;
+  this.factor = opts.factor || 2;
+  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
+  this.attempts = 0;
+}
+
+/**
+ * Return the backoff duration.
+ *
+ * @return {Number}
+ * @api public
+ */
+
+Backoff.prototype.duration = function(){
+  var ms = this.ms * Math.pow(this.factor, this.attempts++);
+  if (this.jitter) {
+    var rand =  Math.random();
+    var deviation = Math.floor(rand * this.jitter * ms);
+    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;
+  }
+  return Math.min(ms, this.max) | 0;
+};
+
+/**
+ * Reset the number of attempts.
+ *
+ * @api public
+ */
+
+Backoff.prototype.reset = function(){
+  this.attempts = 0;
+};
+
+/**
+ * Set the minimum duration
+ *
+ * @api public
+ */
+
+Backoff.prototype.setMin = function(min){
+  this.ms = min;
+};
+
+/**
+ * Set the maximum duration
+ *
+ * @api public
+ */
+
+Backoff.prototype.setMax = function(max){
+  this.max = max;
+};
+
+/**
+ * Set the jitter
+ *
+ * @api public
+ */
+
+Backoff.prototype.setJitter = function(jitter){
+  this.jitter = jitter;
+};
+
+
+},{}],8:[function(_dereq_,module,exports){
+/**
+ * Slice reference.
+ */
+
+var slice = [].slice;
+
+/**
+ * Bind `obj` to `fn`.
+ *
+ * @param {Object} obj
+ * @param {Function|String} fn or string
+ * @return {Function}
+ * @api public
+ */
+
+module.exports = function(obj, fn){
+  if ('string' == typeof fn) fn = obj[fn];
+  if ('function' != typeof fn) throw new Error('bind() requires a function');
+  var args = slice.call(arguments, 2);
+  return function(){
+    return fn.apply(obj, args.concat(slice.call(arguments)));
+  }
+};
+
+},{}],9:[function(_dereq_,module,exports){
+
+/**
+ * Expose `Emitter`.
+ */
+
+module.exports = Emitter;
+
+/**
+ * Initialize a new `Emitter`.
+ *
+ * @api public
+ */
+
+function Emitter(obj) {
+  if (obj) return mixin(obj);
+};
+
+/**
+ * Mixin the emitter properties.
+ *
+ * @param {Object} obj
+ * @return {Object}
+ * @api private
+ */
+
+function mixin(obj) {
+  for (var key in Emitter.prototype) {
+    obj[key] = Emitter.prototype[key];
+  }
+  return obj;
+}
+
+/**
+ * Listen on the given `event` with `fn`.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.on =
+Emitter.prototype.addEventListener = function(event, fn){
+  this._callbacks = this._callbacks || {};
+  (this._callbacks[event] = this._callbacks[event] || [])
+    .push(fn);
+  return this;
+};
+
+/**
+ * Adds an `event` listener that will be invoked a single
+ * time then automatically removed.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.once = function(event, fn){
+  var self = this;
+  this._callbacks = this._callbacks || {};
+
+  function on() {
+    self.off(event, on);
+    fn.apply(this, arguments);
+  }
+
+  on.fn = fn;
+  this.on(event, on);
+  return this;
+};
+
+/**
+ * Remove the given callback for `event` or all
+ * registered callbacks.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.off =
+Emitter.prototype.removeListener =
+Emitter.prototype.removeAllListeners =
+Emitter.prototype.removeEventListener = function(event, fn){
+  this._callbacks = this._callbacks || {};
+
+  // all
+  if (0 == arguments.length) {
+    this._callbacks = {};
+    return this;
+  }
+
+  // specific event
+  var callbacks = this._callbacks[event];
+  if (!callbacks) return this;
+
+  // remove all handlers
+  if (1 == arguments.length) {
+    delete this._callbacks[event];
+    return this;
+  }
+
+  // remove specific handler
+  var cb;
+  for (var i = 0; i < callbacks.length; i++) {
+    cb = callbacks[i];
+    if (cb === fn || cb.fn === fn) {
+      callbacks.splice(i, 1);
+      break;
+    }
+  }
+  return this;
+};
+
+/**
+ * Emit `event` with the given args.
+ *
+ * @param {String} event
+ * @param {Mixed} ...
+ * @return {Emitter}
+ */
+
+Emitter.prototype.emit = function(event){
+  this._callbacks = this._callbacks || {};
+  var args = [].slice.call(arguments, 1)
+    , callbacks = this._callbacks[event];
+
+  if (callbacks) {
+    callbacks = callbacks.slice(0);
+    for (var i = 0, len = callbacks.length; i < len; ++i) {
+      callbacks[i].apply(this, args);
+    }
+  }
+
+  return this;
+};
+
+/**
+ * Return array of callbacks for `event`.
+ *
+ * @param {String} event
+ * @return {Array}
+ * @api public
+ */
+
+Emitter.prototype.listeners = function(event){
+  this._callbacks = this._callbacks || {};
+  return this._callbacks[event] || [];
+};
+
+/**
+ * Check if this emitter has `event` handlers.
+ *
+ * @param {String} event
+ * @return {Boolean}
+ * @api public
+ */
+
+Emitter.prototype.hasListeners = function(event){
+  return !! this.listeners(event).length;
+};
+
+},{}],10:[function(_dereq_,module,exports){
+
+/**
+ * Expose `debug()` as the module.
+ */
+
+module.exports = debug;
+
+/**
+ * Create a debugger with the given `name`.
+ *
+ * @param {String} name
+ * @return {Type}
+ * @api public
+ */
+
+function debug(name) {
+  if (!debug.enabled(name)) return function(){};
+
+  return function(fmt){
+    fmt = coerce(fmt);
+
+    var curr = new Date;
+    var ms = curr - (debug[name] || curr);
+    debug[name] = curr;
+
+    fmt = name
+      + ' '
+      + fmt
+      + ' +' + debug.humanize(ms);
+
+    // This hackery is required for IE8
+    // where `console.log` doesn't have 'apply'
+    window.console
+      && console.log
+      && Function.prototype.apply.call(console.log, console, arguments);
+  }
+}
+
+/**
+ * The currently active debug mode names.
+ */
+
+debug.names = [];
+debug.skips = [];
+
+/**
+ * Enables a debug mode by name. This can include modes
+ * separated by a colon and wildcards.
+ *
+ * @param {String} name
+ * @api public
+ */
+
+debug.enable = function(name) {
+  try {
+    localStorage.debug = name;
+  } catch(e){}
+
+  var split = (name || '').split(/[\s,]+/)
+    , len = split.length;
+
+  for (var i = 0; i < len; i++) {
+    name = split[i].replace('*', '.*?');
+    if (name[0] === '-') {
+      debug.skips.push(new RegExp('^' + name.substr(1) + '$'));
+    }
+    else {
+      debug.names.push(new RegExp('^' + name + '$'));
+    }
+  }
+};
+
+/**
+ * Disable debug output.
+ *
+ * @api public
+ */
+
+debug.disable = function(){
+  debug.enable('');
+};
+
+/**
+ * Humanize the given `ms`.
+ *
+ * @param {Number} m
+ * @return {String}
+ * @api private
+ */
+
+debug.humanize = function(ms) {
+  var sec = 1000
+    , min = 60 * 1000
+    , hour = 60 * min;
+
+  if (ms >= hour) return (ms / hour).toFixed(1) + 'h';
+  if (ms >= min) return (ms / min).toFixed(1) + 'm';
+  if (ms >= sec) return (ms / sec | 0) + 's';
+  return ms + 'ms';
+};
+
+/**
+ * Returns true if the given mode name is enabled, false otherwise.
+ *
+ * @param {String} name
+ * @return {Boolean}
+ * @api public
+ */
+
+debug.enabled = function(name) {
+  for (var i = 0, len = debug.skips.length; i < len; i++) {
+    if (debug.skips[i].test(name)) {
+      return false;
+    }
+  }
+  for (var i = 0, len = debug.names.length; i < len; i++) {
+    if (debug.names[i].test(name)) {
+      return true;
+    }
+  }
+  return false;
+};
+
+/**
+ * Coerce `val`.
+ */
+
+function coerce(val) {
+  if (val instanceof Error) return val.stack || val.message;
+  return val;
+}
+
+// persist
+
+try {
+  if (window.localStorage) debug.enable(localStorage.debug);
+} catch(e){}
+
+},{}],11:[function(_dereq_,module,exports){
+
+module.exports =  _dereq_('./lib/');
+
+},{"./lib/":12}],12:[function(_dereq_,module,exports){
+
+module.exports = _dereq_('./socket');
+
+/**
+ * Exports parser
+ *
+ * @api public
+ *
+ */
+module.exports.parser = _dereq_('engine.io-parser');
+
+},{"./socket":13,"engine.io-parser":25}],13:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module dependencies.
+ */
+
+var transports = _dereq_('./transports');
+var Emitter = _dereq_('component-emitter');
+var debug = _dereq_('debug')('engine.io-client:socket');
+var index = _dereq_('indexof');
+var parser = _dereq_('engine.io-parser');
+var parseuri = _dereq_('parseuri');
+var parsejson = _dereq_('parsejson');
+var parseqs = _dereq_('parseqs');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Socket;
+
+/**
+ * Noop function.
+ *
+ * @api private
+ */
+
+function noop(){}
+
+/**
+ * Socket constructor.
+ *
+ * @param {String|Object} uri or options
+ * @param {Object} options
+ * @api public
+ */
+
+function Socket(uri, opts){
+  if (!(this instanceof Socket)) return new Socket(uri, opts);
+
+  opts = opts || {};
+
+  if (uri && 'object' == typeof uri) {
+    opts = uri;
+    uri = null;
+  }
+
+  if (uri) {
+    uri = parseuri(uri);
+    opts.host = uri.host;
+    opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
+    opts.port = uri.port;
+    if (uri.query) opts.query = uri.query;
+  }
+
+  this.secure = null != opts.secure ? opts.secure :
+    (global.location && 'https:' == location.protocol);
+
+  if (opts.host) {
+    var pieces = opts.host.split(':');
+    opts.hostname = pieces.shift();
+    if (pieces.length) {
+      opts.port = pieces.pop();
+    } else if (!opts.port) {
+      // if no port is specified manually, use the protocol default
+      opts.port = this.secure ? '443' : '80';
+    }
+  }
+
+  this.agent = opts.agent || false;
+  this.hostname = opts.hostname ||
+    (global.location ? location.hostname : 'localhost');
+  this.port = opts.port || (global.location && location.port ?
+       location.port :
+       (this.secure ? 443 : 80));
+  this.query = opts.query || {};
+  if ('string' == typeof this.query) this.query = parseqs.decode(this.query);
+  this.upgrade = false !== opts.upgrade;
+  this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
+  this.forceJSONP = !!opts.forceJSONP;
+  this.jsonp = false !== opts.jsonp;
+  this.forceBase64 = !!opts.forceBase64;
+  this.enablesXDR = !!opts.enablesXDR;
+  this.timestampParam = opts.timestampParam || 't';
+  this.timestampRequests = opts.timestampRequests;
+  this.transports = opts.transports || ['polling', 'websocket'];
+  this.readyState = '';
+  this.writeBuffer = [];
+  this.callbackBuffer = [];
+  this.policyPort = opts.policyPort || 843;
+  this.rememberUpgrade = opts.rememberUpgrade || false;
+  this.binaryType = null;
+  this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
+
+  // SSL options for Node.js client
+  this.pfx = opts.pfx || null;
+  this.key = opts.key || null;
+  this.passphrase = opts.passphrase || null;
+  this.cert = opts.cert || null;
+  this.ca = opts.ca || null;
+  this.ciphers = opts.ciphers || null;
+  this.rejectUnauthorized = opts.rejectUnauthorized || null;
+
+  this.open();
+}
+
+Socket.priorWebsocketSuccess = false;
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+Socket.protocol = parser.protocol; // this is an int
+
+/**
+ * Expose deps for legacy compatibility
+ * and standalone browser access.
+ */
+
+Socket.Socket = Socket;
+Socket.Transport = _dereq_('./transport');
+Socket.transports = _dereq_('./transports');
+Socket.parser = _dereq_('engine.io-parser');
+
+/**
+ * Creates transport of the given type.
+ *
+ * @param {String} transport name
+ * @return {Transport}
+ * @api private
+ */
+
+Socket.prototype.createTransport = function (name) {
+  debug('creating transport "%s"', name);
+  var query = clone(this.query);
+
+  // append engine.io protocol identifier
+  query.EIO = parser.protocol;
+
+  // transport name
+  query.transport = name;
+
+  // session id if we already have one
+  if (this.id) query.sid = this.id;
+
+  var transport = new transports[name]({
+    agent: this.agent,
+    hostname: this.hostname,
+    port: this.port,
+    secure: this.secure,
+    path: this.path,
+    query: query,
+    forceJSONP: this.forceJSONP,
+    jsonp: this.jsonp,
+    forceBase64: this.forceBase64,
+    enablesXDR: this.enablesXDR,
+    timestampRequests: this.timestampRequests,
+    timestampParam: this.timestampParam,
+    policyPort: this.policyPort,
+    socket: this,
+    pfx: this.pfx,
+    key: this.key,
+    passphrase: this.passphrase,
+    cert: this.cert,
+    ca: this.ca,
+    ciphers: this.ciphers,
+    rejectUnauthorized: this.rejectUnauthorized
+  });
+
+  return transport;
+};
+
+function clone (obj) {
+  var o = {};
+  for (var i in obj) {
+    if (obj.hasOwnProperty(i)) {
+      o[i] = obj[i];
+    }
+  }
+  return o;
+}
+
+/**
+ * Initializes transport to use and starts probe.
+ *
+ * @api private
+ */
+Socket.prototype.open = function () {
+  var transport;
+  if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) {
+    transport = 'websocket';
+  } else if (0 == this.transports.length) {
+    // Emit error on next tick so it can be listened to
+    var self = this;
+    setTimeout(function() {
+      self.emit('error', 'No transports available');
+    }, 0);
+    return;
+  } else {
+    transport = this.transports[0];
+  }
+  this.readyState = 'opening';
+
+  // Retry with the next transport if the transport is disabled (jsonp: false)
+  var transport;
+  try {
+    transport = this.createTransport(transport);
+  } catch (e) {
+    this.transports.shift();
+    this.open();
+    return;
+  }
+
+  transport.open();
+  this.setTransport(transport);
+};
+
+/**
+ * Sets the current transport. Disables the existing one (if any).
+ *
+ * @api private
+ */
+
+Socket.prototype.setTransport = function(transport){
+  debug('setting transport %s', transport.name);
+  var self = this;
+
+  if (this.transport) {
+    debug('clearing existing transport %s', this.transport.name);
+    this.transport.removeAllListeners();
+  }
+
+  // set up transport
+  this.transport = transport;
+
+  // set up transport listeners
+  transport
+  .on('drain', function(){
+    self.onDrain();
+  })
+  .on('packet', function(packet){
+    self.onPacket(packet);
+  })
+  .on('error', function(e){
+    self.onError(e);
+  })
+  .on('close', function(){
+    self.onClose('transport close');
+  });
+};
+
+/**
+ * Probes a transport.
+ *
+ * @param {String} transport name
+ * @api private
+ */
+
+Socket.prototype.probe = function (name) {
+  debug('probing transport "%s"', name);
+  var transport = this.createTransport(name, { probe: 1 })
+    , failed = false
+    , self = this;
+
+  Socket.priorWebsocketSuccess = false;
+
+  function onTransportOpen(){
+    if (self.onlyBinaryUpgrades) {
+      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
+      failed = failed || upgradeLosesBinary;
+    }
+    if (failed) return;
+
+    debug('probe transport "%s" opened', name);
+    transport.send([{ type: 'ping', data: 'probe' }]);
+    transport.once('packet', function (msg) {
+      if (failed) return;
+      if ('pong' == msg.type && 'probe' == msg.data) {
+        debug('probe transport "%s" pong', name);
+        self.upgrading = true;
+        self.emit('upgrading', transport);
+        if (!transport) return;
+        Socket.priorWebsocketSuccess = 'websocket' == transport.name;
+
+        debug('pausing current transport "%s"', self.transport.name);
+        self.transport.pause(function () {
+          if (failed) return;
+          if ('closed' == self.readyState) return;
+          debug('changing transport and sending upgrade packet');
+
+          cleanup();
+
+          self.setTransport(transport);
+          transport.send([{ type: 'upgrade' }]);
+          self.emit('upgrade', transport);
+          transport = null;
+          self.upgrading = false;
+          self.flush();
+        });
+      } else {
+        debug('probe transport "%s" failed', name);
+        var err = new Error('probe error');
+        err.transport = transport.name;
+        self.emit('upgradeError', err);
+      }
+    });
+  }
+
+  function freezeTransport() {
+    if (failed) return;
+
+    // Any callback called by transport should be ignored since now
+    failed = true;
+
+    cleanup();
+
+    transport.close();
+    transport = null;
+  }
+
+  //Handle any error that happens while probing
+  function onerror(err) {
+    var error = new Error('probe error: ' + err);
+    error.transport = transport.name;
+
+    freezeTransport();
+
+    debug('probe transport "%s" failed because of error: %s', name, err);
+
+    self.emit('upgradeError', error);
+  }
+
+  function onTransportClose(){
+    onerror("transport closed");
+  }
+
+  //When the socket is closed while we're probing
+  function onclose(){
+    onerror("socket closed");
+  }
+
+  //When the socket is upgraded while we're probing
+  function onupgrade(to){
+    if (transport && to.name != transport.name) {
+      debug('"%s" works - aborting "%s"', to.name, transport.name);
+      freezeTransport();
+    }
+  }
+
+  //Remove all listeners on the transport and on self
+  function cleanup(){
+    transport.removeListener('open', onTransportOpen);
+    transport.removeListener('error', onerror);
+    transport.removeListener('close', onTransportClose);
+    self.removeListener('close', onclose);
+    self.removeListener('upgrading', onupgrade);
+  }
+
+  transport.once('open', onTransportOpen);
+  transport.once('error', onerror);
+  transport.once('close', onTransportClose);
+
+  this.once('close', onclose);
+  this.once('upgrading', onupgrade);
+
+  transport.open();
+
+};
+
+/**
+ * Called when connection is deemed open.
+ *
+ * @api public
+ */
+
+Socket.prototype.onOpen = function () {
+  debug('socket open');
+  this.readyState = 'open';
+  Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;
+  this.emit('open');
+  this.flush();
+
+  // we check for `readyState` in case an `open`
+  // listener already closed the socket
+  if ('open' == this.readyState && this.upgrade && this.transport.pause) {
+    debug('starting upgrade probes');
+    for (var i = 0, l = this.upgrades.length; i < l; i++) {
+      this.probe(this.upgrades[i]);
+    }
+  }
+};
+
+/**
+ * Handles a packet.
+ *
+ * @api private
+ */
+
+Socket.prototype.onPacket = function (packet) {
+  if ('opening' == this.readyState || 'open' == this.readyState) {
+    debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+
+    this.emit('packet', packet);
+
+    // Socket is live - any packet counts
+    this.emit('heartbeat');
+
+    switch (packet.type) {
+      case 'open':
+        this.onHandshake(parsejson(packet.data));
+        break;
+
+      case 'pong':
+        this.setPing();
+        break;
+
+      case 'error':
+        var err = new Error('server error');
+        err.code = packet.data;
+        this.emit('error', err);
+        break;
+
+      case 'message':
+        this.emit('data', packet.data);
+        this.emit('message', packet.data);
+        break;
+    }
+  } else {
+    debug('packet received with socket readyState "%s"', this.readyState);
+  }
+};
+
+/**
+ * Called upon handshake completion.
+ *
+ * @param {Object} handshake obj
+ * @api private
+ */
+
+Socket.prototype.onHandshake = function (data) {
+  this.emit('handshake', data);
+  this.id = data.sid;
+  this.transport.query.sid = data.sid;
+  this.upgrades = this.filterUpgrades(data.upgrades);
+  this.pingInterval = data.pingInterval;
+  this.pingTimeout = data.pingTimeout;
+  this.onOpen();
+  // In case open handler closes socket
+  if  ('closed' == this.readyState) return;
+  this.setPing();
+
+  // Prolong liveness of socket on heartbeat
+  this.removeListener('heartbeat', this.onHeartbeat);
+  this.on('heartbeat', this.onHeartbeat);
+};
+
+/**
+ * Resets ping timeout.
+ *
+ * @api private
+ */
+
+Socket.prototype.onHeartbeat = function (timeout) {
+  clearTimeout(this.pingTimeoutTimer);
+  var self = this;
+  self.pingTimeoutTimer = setTimeout(function () {
+    if ('closed' == self.readyState) return;
+    self.onClose('ping timeout');
+  }, timeout || (self.pingInterval + self.pingTimeout));
+};
+
+/**
+ * Pings server every `this.pingInterval` and expects response
+ * within `this.pingTimeout` or closes connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.setPing = function () {
+  var self = this;
+  clearTimeout(self.pingIntervalTimer);
+  self.pingIntervalTimer = setTimeout(function () {
+    debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
+    self.ping();
+    self.onHeartbeat(self.pingTimeout);
+  }, self.pingInterval);
+};
+
+/**
+* Sends a ping packet.
+*
+* @api public
+*/
+
+Socket.prototype.ping = function () {
+  this.sendPacket('ping');
+};
+
+/**
+ * Called on `drain` event
+ *
+ * @api private
+ */
+
+Socket.prototype.onDrain = function() {
+  for (var i = 0; i < this.prevBufferLen; i++) {
+    if (this.callbackBuffer[i]) {
+      this.callbackBuffer[i]();
+    }
+  }
+
+  this.writeBuffer.splice(0, this.prevBufferLen);
+  this.callbackBuffer.splice(0, this.prevBufferLen);
+
+  // setting prevBufferLen = 0 is very important
+  // for example, when upgrading, upgrade packet is sent over,
+  // and a nonzero prevBufferLen could cause problems on `drain`
+  this.prevBufferLen = 0;
+
+  if (this.writeBuffer.length == 0) {
+    this.emit('drain');
+  } else {
+    this.flush();
+  }
+};
+
+/**
+ * Flush write buffers.
+ *
+ * @api private
+ */
+
+Socket.prototype.flush = function () {
+  if ('closed' != this.readyState && this.transport.writable &&
+    !this.upgrading && this.writeBuffer.length) {
+    debug('flushing %d packets in socket', this.writeBuffer.length);
+    this.transport.send(this.writeBuffer);
+    // keep track of current length of writeBuffer
+    // splice writeBuffer and callbackBuffer on `drain`
+    this.prevBufferLen = this.writeBuffer.length;
+    this.emit('flush');
+  }
+};
+
+/**
+ * Sends a message.
+ *
+ * @param {String} message.
+ * @param {Function} callback function.
+ * @return {Socket} for chaining.
+ * @api public
+ */
+
+Socket.prototype.write =
+Socket.prototype.send = function (msg, fn) {
+  this.sendPacket('message', msg, fn);
+  return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {String} packet type.
+ * @param {String} data.
+ * @param {Function} callback function.
+ * @api private
+ */
+
+Socket.prototype.sendPacket = function (type, data, fn) {
+  if ('closing' == this.readyState || 'closed' == this.readyState) {
+    return;
+  }
+
+  var packet = { type: type, data: data };
+  this.emit('packetCreate', packet);
+  this.writeBuffer.push(packet);
+  this.callbackBuffer.push(fn);
+  this.flush();
+};
+
+/**
+ * Closes the connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.close = function () {
+  if ('opening' == this.readyState || 'open' == this.readyState) {
+    this.readyState = 'closing';
+
+    var self = this;
+
+    function close() {
+      self.onClose('forced close');
+      debug('socket closing - telling transport to close');
+      self.transport.close();
+    }
+
+    function cleanupAndClose() {
+      self.removeListener('upgrade', cleanupAndClose);
+      self.removeListener('upgradeError', cleanupAndClose);
+      close();
+    }
+
+    function waitForUpgrade() {
+      // wait for upgrade to finish since we can't send packets while pausing a transport
+      self.once('upgrade', cleanupAndClose);
+      self.once('upgradeError', cleanupAndClose);
+    }
+
+    if (this.writeBuffer.length) {
+      this.once('drain', function() {
+        if (this.upgrading) {
+          waitForUpgrade();
+        } else {
+          close();
+        }
+      });
+    } else if (this.upgrading) {
+      waitForUpgrade();
+    } else {
+      close();
+    }
+  }
+
+  return this;
+};
+
+/**
+ * Called upon transport error
+ *
+ * @api private
+ */
+
+Socket.prototype.onError = function (err) {
+  debug('socket error %j', err);
+  Socket.priorWebsocketSuccess = false;
+  this.emit('error', err);
+  this.onClose('transport error', err);
+};
+
+/**
+ * Called upon transport close.
+ *
+ * @api private
+ */
+
+Socket.prototype.onClose = function (reason, desc) {
+  if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) {
+    debug('socket close with reason: "%s"', reason);
+    var self = this;
+
+    // clear timers
+    clearTimeout(this.pingIntervalTimer);
+    clearTimeout(this.pingTimeoutTimer);
+
+    // clean buffers in next tick, so developers can still
+    // grab the buffers on `close` event
+    setTimeout(function() {
+      self.writeBuffer = [];
+      self.callbackBuffer = [];
+      self.prevBufferLen = 0;
+    }, 0);
+
+    // stop event from firing again for transport
+    this.transport.removeAllListeners('close');
+
+    // ensure transport won't stay open
+    this.transport.close();
+
+    // ignore further transport communication
+    this.transport.removeAllListeners();
+
+    // set ready state
+    this.readyState = 'closed';
+
+    // clear session id
+    this.id = null;
+
+    // emit close event
+    this.emit('close', reason, desc);
+  }
+};
+
+/**
+ * Filters upgrades, returning only those matching client transports.
+ *
+ * @param {Array} server upgrades
+ * @api private
+ *
+ */
+
+Socket.prototype.filterUpgrades = function (upgrades) {
+  var filteredUpgrades = [];
+  for (var i = 0, j = upgrades.length; i<j; i++) {
+    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
+  }
+  return filteredUpgrades;
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./transport":14,"./transports":15,"component-emitter":9,"debug":22,"engine.io-parser":25,"indexof":40,"parsejson":32,"parseqs":33,"parseuri":34}],14:[function(_dereq_,module,exports){
+/**
+ * Module dependencies.
+ */
+
+var parser = _dereq_('engine.io-parser');
+var Emitter = _dereq_('component-emitter');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Transport;
+
+/**
+ * Transport abstract constructor.
+ *
+ * @param {Object} options.
+ * @api private
+ */
+
+function Transport (opts) {
+  this.path = opts.path;
+  this.hostname = opts.hostname;
+  this.port = opts.port;
+  this.secure = opts.secure;
+  this.query = opts.query;
+  this.timestampParam = opts.timestampParam;
+  this.timestampRequests = opts.timestampRequests;
+  this.readyState = '';
+  this.agent = opts.agent || false;
+  this.socket = opts.socket;
+  this.enablesXDR = opts.enablesXDR;
+
+  // SSL options for Node.js client
+  this.pfx = opts.pfx;
+  this.key = opts.key;
+  this.passphrase = opts.passphrase;
+  this.cert = opts.cert;
+  this.ca = opts.ca;
+  this.ciphers = opts.ciphers;
+  this.rejectUnauthorized = opts.rejectUnauthorized;
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Transport.prototype);
+
+/**
+ * A counter used to prevent collisions in the timestamps used
+ * for cache busting.
+ */
+
+Transport.timestamps = 0;
+
+/**
+ * Emits an error.
+ *
+ * @param {String} str
+ * @return {Transport} for chaining
+ * @api public
+ */
+
+Transport.prototype.onError = function (msg, desc) {
+  var err = new Error(msg);
+  err.type = 'TransportError';
+  err.description = desc;
+  this.emit('error', err);
+  return this;
+};
+
+/**
+ * Opens the transport.
+ *
+ * @api public
+ */
+
+Transport.prototype.open = function () {
+  if ('closed' == this.readyState || '' == this.readyState) {
+    this.readyState = 'opening';
+    this.doOpen();
+  }
+
+  return this;
+};
+
+/**
+ * Closes the transport.
+ *
+ * @api private
+ */
+
+Transport.prototype.close = function () {
+  if ('opening' == this.readyState || 'open' == this.readyState) {
+    this.doClose();
+    this.onClose();
+  }
+
+  return this;
+};
+
+/**
+ * Sends multiple packets.
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+Transport.prototype.send = function(packets){
+  if ('open' == this.readyState) {
+    this.write(packets);
+  } else {
+    throw new Error('Transport not open');
+  }
+};
+
+/**
+ * Called upon open
+ *
+ * @api private
+ */
+
+Transport.prototype.onOpen = function () {
+  this.readyState = 'open';
+  this.writable = true;
+  this.emit('open');
+};
+
+/**
+ * Called with data.
+ *
+ * @param {String} data
+ * @api private
+ */
+
+Transport.prototype.onData = function(data){
+  var packet = parser.decodePacket(data, this.socket.binaryType);
+  this.onPacket(packet);
+};
+
+/**
+ * Called with a decoded packet.
+ */
+
+Transport.prototype.onPacket = function (packet) {
+  this.emit('packet', packet);
+};
+
+/**
+ * Called upon close.
+ *
+ * @api private
+ */
+
+Transport.prototype.onClose = function () {
+  this.readyState = 'closed';
+  this.emit('close');
+};
+
+},{"component-emitter":9,"engine.io-parser":25}],15:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module dependencies
+ */
+
+var XMLHttpRequest = _dereq_('xmlhttprequest');
+var XHR = _dereq_('./polling-xhr');
+var JSONP = _dereq_('./polling-jsonp');
+var websocket = _dereq_('./websocket');
+
+/**
+ * Export transports.
+ */
+
+exports.polling = polling;
+exports.websocket = websocket;
+
+/**
+ * Polling transport polymorphic constructor.
+ * Decides on xhr vs jsonp based on feature detection.
+ *
+ * @api private
+ */
+
+function polling(opts){
+  var xhr;
+  var xd = false;
+  var xs = false;
+  var jsonp = false !== opts.jsonp;
+
+  if (global.location) {
+    var isSSL = 'https:' == location.protocol;
+    var port = location.port;
+
+    // some user agents have empty `location.port`
+    if (!port) {
+      port = isSSL ? 443 : 80;
+    }
+
+    xd = opts.hostname != location.hostname || port != opts.port;
+    xs = opts.secure != isSSL;
+  }
+
+  opts.xdomain = xd;
+  opts.xscheme = xs;
+  xhr = new XMLHttpRequest(opts);
+
+  if ('open' in xhr && !opts.forceJSONP) {
+    return new XHR(opts);
+  } else {
+    if (!jsonp) throw new Error('JSONP disabled');
+    return new JSONP(opts);
+  }
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./polling-jsonp":16,"./polling-xhr":17,"./websocket":19,"xmlhttprequest":20}],16:[function(_dereq_,module,exports){
+(function (global){
+
+/**
+ * Module requirements.
+ */
+
+var Polling = _dereq_('./polling');
+var inherit = _dereq_('component-inherit');
+
+/**
+ * Module exports.
+ */
+
+module.exports = JSONPPolling;
+
+/**
+ * Cached regular expressions.
+ */
+
+var rNewline = /\n/g;
+var rEscapedNewline = /\\n/g;
+
+/**
+ * Global JSONP callbacks.
+ */
+
+var callbacks;
+
+/**
+ * Callbacks count.
+ */
+
+var index = 0;
+
+/**
+ * Noop.
+ */
+
+function empty () { }
+
+/**
+ * JSONP Polling constructor.
+ *
+ * @param {Object} opts.
+ * @api public
+ */
+
+function JSONPPolling (opts) {
+  Polling.call(this, opts);
+
+  this.query = this.query || {};
+
+  // define global callbacks array if not present
+  // we do this here (lazily) to avoid unneeded global pollution
+  if (!callbacks) {
+    // we need to consider multiple engines in the same page
+    if (!global.___eio) global.___eio = [];
+    callbacks = global.___eio;
+  }
+
+  // callback identifier
+  this.index = callbacks.length;
+
+  // add callback to jsonp global
+  var self = this;
+  callbacks.push(function (msg) {
+    self.onData(msg);
+  });
+
+  // append to query string
+  this.query.j = this.index;
+
+  // prevent spurious errors from being emitted when the window is unloaded
+  if (global.document && global.addEventListener) {
+    global.addEventListener('beforeunload', function () {
+      if (self.script) self.script.onerror = empty;
+    }, false);
+  }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(JSONPPolling, Polling);
+
+/*
+ * JSONP only supports binary as base64 encoded strings
+ */
+
+JSONPPolling.prototype.supportsBinary = false;
+
+/**
+ * Closes the socket.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doClose = function () {
+  if (this.script) {
+    this.script.parentNode.removeChild(this.script);
+    this.script = null;
+  }
+
+  if (this.form) {
+    this.form.parentNode.removeChild(this.form);
+    this.form = null;
+    this.iframe = null;
+  }
+
+  Polling.prototype.doClose.call(this);
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doPoll = function () {
+  var self = this;
+  var script = document.createElement('script');
+
+  if (this.script) {
+    this.script.parentNode.removeChild(this.script);
+    this.script = null;
+  }
+
+  script.async = true;
+  script.src = this.uri();
+  script.onerror = function(e){
+    self.onError('jsonp poll error',e);
+  };
+
+  var insertAt = document.getElementsByTagName('script')[0];
+  insertAt.parentNode.insertBefore(script, insertAt);
+  this.script = script;
+
+  var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent);
+  
+  if (isUAgecko) {
+    setTimeout(function () {
+      var iframe = document.createElement('iframe');
+      document.body.appendChild(iframe);
+      document.body.removeChild(iframe);
+    }, 100);
+  }
+};
+
+/**
+ * Writes with a hidden iframe.
+ *
+ * @param {String} data to send
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+JSONPPolling.prototype.doWrite = function (data, fn) {
+  var self = this;
+
+  if (!this.form) {
+    var form = document.createElement('form');
+    var area = document.createElement('textarea');
+    var id = this.iframeId = 'eio_iframe_' + this.index;
+    var iframe;
+
+    form.className = 'socketio';
+    form.style.position = 'absolute';
+    form.style.top = '-1000px';
+    form.style.left = '-1000px';
+    form.target = id;
+    form.method = 'POST';
+    form.setAttribute('accept-charset', 'utf-8');
+    area.name = 'd';
+    form.appendChild(area);
+    document.body.appendChild(form);
+
+    this.form = form;
+    this.area = area;
+  }
+
+  this.form.action = this.uri();
+
+  function complete () {
+    initIframe();
+    fn();
+  }
+
+  function initIframe () {
+    if (self.iframe) {
+      try {
+        self.form.removeChild(self.iframe);
+      } catch (e) {
+        self.onError('jsonp polling iframe removal error', e);
+      }
+    }
+
+    try {
+      // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
+      var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">';
+      iframe = document.createElement(html);
+    } catch (e) {
+      iframe = document.createElement('iframe');
+      iframe.name = self.iframeId;
+      iframe.src = 'javascript:0';
+    }
+
+    iframe.id = self.iframeId;
+
+    self.form.appendChild(iframe);
+    self.iframe = iframe;
+  }
+
+  initIframe();
+
+  // escape \n to prevent it from being converted into \r\n by some UAs
+  // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
+  data = data.replace(rEscapedNewline, '\\\n');
+  this.area.value = data.replace(rNewline, '\\n');
+
+  try {
+    this.form.submit();
+  } catch(e) {}
+
+  if (this.iframe.attachEvent) {
+    this.iframe.onreadystatechange = function(){
+      if (self.iframe.readyState == 'complete') {
+        complete();
+      }
+    };
+  } else {
+    this.iframe.onload = complete;
+  }
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./polling":18,"component-inherit":21}],17:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module requirements.
+ */
+
+var XMLHttpRequest = _dereq_('xmlhttprequest');
+var Polling = _dereq_('./polling');
+var Emitter = _dereq_('component-emitter');
+var inherit = _dereq_('component-inherit');
+var debug = _dereq_('debug')('engine.io-client:polling-xhr');
+
+/**
+ * Module exports.
+ */
+
+module.exports = XHR;
+module.exports.Request = Request;
+
+/**
+ * Empty function
+ */
+
+function empty(){}
+
+/**
+ * XHR Polling constructor.
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+function XHR(opts){
+  Polling.call(this, opts);
+
+  if (global.location) {
+    var isSSL = 'https:' == location.protocol;
+    var port = location.port;
+
+    // some user agents have empty `location.port`
+    if (!port) {
+      port = isSSL ? 443 : 80;
+    }
+
+    this.xd = opts.hostname != global.location.hostname ||
+      port != opts.port;
+    this.xs = opts.secure != isSSL;
+  }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(XHR, Polling);
+
+/**
+ * XHR supports binary
+ */
+
+XHR.prototype.supportsBinary = true;
+
+/**
+ * Creates a request.
+ *
+ * @param {String} method
+ * @api private
+ */
+
+XHR.prototype.request = function(opts){
+  opts = opts || {};
+  opts.uri = this.uri();
+  opts.xd = this.xd;
+  opts.xs = this.xs;
+  opts.agent = this.agent || false;
+  opts.supportsBinary = this.supportsBinary;
+  opts.enablesXDR = this.enablesXDR;
+
+  // SSL options for Node.js client
+  opts.pfx = this.pfx;
+  opts.key = this.key;
+  opts.passphrase = this.passphrase;
+  opts.cert = this.cert;
+  opts.ca = this.ca;
+  opts.ciphers = this.ciphers;
+  opts.rejectUnauthorized = this.rejectUnauthorized;
+
+  return new Request(opts);
+};
+
+/**
+ * Sends data.
+ *
+ * @param {String} data to send.
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+XHR.prototype.doWrite = function(data, fn){
+  var isBinary = typeof data !== 'string' && data !== undefined;
+  var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
+  var self = this;
+  req.on('success', fn);
+  req.on('error', function(err){
+    self.onError('xhr post error', err);
+  });
+  this.sendXhr = req;
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+XHR.prototype.doPoll = function(){
+  debug('xhr poll');
+  var req = this.request();
+  var self = this;
+  req.on('data', function(data){
+    self.onData(data);
+  });
+  req.on('error', function(err){
+    self.onError('xhr poll error', err);
+  });
+  this.pollXhr = req;
+};
+
+/**
+ * Request constructor
+ *
+ * @param {Object} options
+ * @api public
+ */
+
+function Request(opts){
+  this.method = opts.method || 'GET';
+  this.uri = opts.uri;
+  this.xd = !!opts.xd;
+  this.xs = !!opts.xs;
+  this.async = false !== opts.async;
+  this.data = undefined != opts.data ? opts.data : null;
+  this.agent = opts.agent;
+  this.isBinary = opts.isBinary;
+  this.supportsBinary = opts.supportsBinary;
+  this.enablesXDR = opts.enablesXDR;
+
+  // SSL options for Node.js client
+  this.pfx = opts.pfx;
+  this.key = opts.key;
+  this.passphrase = opts.passphrase;
+  this.cert = opts.cert;
+  this.ca = opts.ca;
+  this.ciphers = opts.ciphers;
+  this.rejectUnauthorized = opts.rejectUnauthorized;
+
+  this.create();
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Request.prototype);
+
+/**
+ * Creates the XHR object and sends the request.
+ *
+ * @api private
+ */
+
+Request.prototype.create = function(){
+  var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };
+
+  // SSL options for Node.js client
+  opts.pfx = this.pfx;
+  opts.key = this.key;
+  opts.passphrase = this.passphrase;
+  opts.cert = this.cert;
+  opts.ca = this.ca;
+  opts.ciphers = this.ciphers;
+  opts.rejectUnauthorized = this.rejectUnauthorized;
+
+  var xhr = this.xhr = new XMLHttpRequest(opts);
+  var self = this;
+
+  try {
+    debug('xhr open %s: %s', this.method, this.uri);
+    xhr.open(this.method, this.uri, this.async);
+    if (this.supportsBinary) {
+      // This has to be done after open because Firefox is stupid
+      // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
+      xhr.responseType = 'arraybuffer';
+    }
+
+    if ('POST' == this.method) {
+      try {
+        if (this.isBinary) {
+          xhr.setRequestHeader('Content-type', 'application/octet-stream');
+        } else {
+          xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
+        }
+      } catch (e) {}
+    }
+
+    // ie6 check
+    if ('withCredentials' in xhr) {
+      xhr.withCredentials = true;
+    }
+
+    if (this.hasXDR()) {
+      xhr.onload = function(){
+        self.onLoad();
+      };
+      xhr.onerror = function(){
+        self.onError(xhr.responseText);
+      };
+    } else {
+      xhr.onreadystatechange = function(){
+        if (4 != xhr.readyState) return;
+        if (200 == xhr.status || 1223 == xhr.status) {
+          self.onLoad();
+        } else {
+          // make sure the `error` event handler that's user-set
+          // does not throw in the same tick and gets caught here
+          setTimeout(function(){
+            self.onError(xhr.status);
+          }, 0);
+        }
+      };
+    }
+
+    debug('xhr data %s', this.data);
+    xhr.send(this.data);
+  } catch (e) {
+    // Need to defer since .create() is called directly fhrom the constructor
+    // and thus the 'error' event can only be only bound *after* this exception
+    // occurs.  Therefore, also, we cannot throw here at all.
+    setTimeout(function() {
+      self.onError(e);
+    }, 0);
+    return;
+  }
+
+  if (global.document) {
+    this.index = Request.requestsCount++;
+    Request.requests[this.index] = this;
+  }
+};
+
+/**
+ * Called upon successful response.
+ *
+ * @api private
+ */
+
+Request.prototype.onSuccess = function(){
+  this.emit('success');
+  this.cleanup();
+};
+
+/**
+ * Called if we have data.
+ *
+ * @api private
+ */
+
+Request.prototype.onData = function(data){
+  this.emit('data', data);
+  this.onSuccess();
+};
+
+/**
+ * Called upon error.
+ *
+ * @api private
+ */
+
+Request.prototype.onError = function(err){
+  this.emit('error', err);
+  this.cleanup(true);
+};
+
+/**
+ * Cleans up house.
+ *
+ * @api private
+ */
+
+Request.prototype.cleanup = function(fromError){
+  if ('undefined' == typeof this.xhr || null === this.xhr) {
+    return;
+  }
+  // xmlhttprequest
+  if (this.hasXDR()) {
+    this.xhr.onload = this.xhr.onerror = empty;
+  } else {
+    this.xhr.onreadystatechange = empty;
+  }
+
+  if (fromError) {
+    try {
+      this.xhr.abort();
+    } catch(e) {}
+  }
+
+  if (global.document) {
+    delete Request.requests[this.index];
+  }
+
+  this.xhr = null;
+};
+
+/**
+ * Called upon load.
+ *
+ * @api private
+ */
+
+Request.prototype.onLoad = function(){
+  var data;
+  try {
+    var contentType;
+    try {
+      contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];
+    } catch (e) {}
+    if (contentType === 'application/octet-stream') {
+      data = this.xhr.response;
+    } else {
+      if (!this.supportsBinary) {
+        data = this.xhr.responseText;
+      } else {
+        data = 'ok';
+      }
+    }
+  } catch (e) {
+    this.onError(e);
+  }
+  if (null != data) {
+    this.onData(data);
+  }
+};
+
+/**
+ * Check if it has XDomainRequest.
+ *
+ * @api private
+ */
+
+Request.prototype.hasXDR = function(){
+  return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;
+};
+
+/**
+ * Aborts the request.
+ *
+ * @api public
+ */
+
+Request.prototype.abort = function(){
+  this.cleanup();
+};
+
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+
+if (global.document) {
+  Request.requestsCount = 0;
+  Request.requests = {};
+  if (global.attachEvent) {
+    global.attachEvent('onunload', unloadHandler);
+  } else if (global.addEventListener) {
+    global.addEventListener('beforeunload', unloadHandler, false);
+  }
+}
+
+function unloadHandler() {
+  for (var i in Request.requests) {
+    if (Request.requests.hasOwnProperty(i)) {
+      Request.requests[i].abort();
+    }
+  }
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./polling":18,"component-emitter":9,"component-inherit":21,"debug":22,"xmlhttprequest":20}],18:[function(_dereq_,module,exports){
+/**
+ * Module dependencies.
+ */
+
+var Transport = _dereq_('../transport');
+var parseqs = _dereq_('parseqs');
+var parser = _dereq_('engine.io-parser');
+var inherit = _dereq_('component-inherit');
+var debug = _dereq_('debug')('engine.io-client:polling');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Polling;
+
+/**
+ * Is XHR2 supported?
+ */
+
+var hasXHR2 = (function() {
+  var XMLHttpRequest = _dereq_('xmlhttprequest');
+  var xhr = new XMLHttpRequest({ xdomain: false });
+  return null != xhr.responseType;
+})();
+
+/**
+ * Polling interface.
+ *
+ * @param {Object} opts
+ * @api private
+ */
+
+function Polling(opts){
+  var forceBase64 = (opts && opts.forceBase64);
+  if (!hasXHR2 || forceBase64) {
+    this.supportsBinary = false;
+  }
+  Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(Polling, Transport);
+
+/**
+ * Transport name.
+ */
+
+Polling.prototype.name = 'polling';
+
+/**
+ * Opens the socket (triggers polling). We write a PING message to determine
+ * when the transport is open.
+ *
+ * @api private
+ */
+
+Polling.prototype.doOpen = function(){
+  this.poll();
+};
+
+/**
+ * Pauses polling.
+ *
+ * @param {Function} callback upon buffers are flushed and transport is paused
+ * @api private
+ */
+
+Polling.prototype.pause = function(onPause){
+  var pending = 0;
+  var self = this;
+
+  this.readyState = 'pausing';
+
+  function pause(){
+    debug('paused');
+    self.readyState = 'paused';
+    onPause();
+  }
+
+  if (this.polling || !this.writable) {
+    var total = 0;
+
+    if (this.polling) {
+      debug('we are currently polling - waiting to pause');
+      total++;
+      this.once('pollComplete', function(){
+        debug('pre-pause polling complete');
+        --total || pause();
+      });
+    }
+
+    if (!this.writable) {
+      debug('we are currently writing - waiting to pause');
+      total++;
+      this.once('drain', function(){
+        debug('pre-pause writing complete');
+        --total || pause();
+      });
+    }
+  } else {
+    pause();
+  }
+};
+
+/**
+ * Starts polling cycle.
+ *
+ * @api public
+ */
+
+Polling.prototype.poll = function(){
+  debug('polling');
+  this.polling = true;
+  this.doPoll();
+  this.emit('poll');
+};
+
+/**
+ * Overloads onData to detect payloads.
+ *
+ * @api private
+ */
+
+Polling.prototype.onData = function(data){
+  var self = this;
+  debug('polling got data %s', data);
+  var callback = function(packet, index, total) {
+    // if its the first message we consider the transport open
+    if ('opening' == self.readyState) {
+      self.onOpen();
+    }
+
+    // if its a close packet, we close the ongoing requests
+    if ('close' == packet.type) {
+      self.onClose();
+      return false;
+    }
+
+    // otherwise bypass onData and handle the message
+    self.onPacket(packet);
+  };
+
+  // decode payload
+  parser.decodePayload(data, this.socket.binaryType, callback);
+
+  // if an event did not trigger closing
+  if ('closed' != this.readyState) {
+    // if we got data we're not polling
+    this.polling = false;
+    this.emit('pollComplete');
+
+    if ('open' == this.readyState) {
+      this.poll();
+    } else {
+      debug('ignoring poll - transport state "%s"', this.readyState);
+    }
+  }
+};
+
+/**
+ * For polling, send a close packet.
+ *
+ * @api private
+ */
+
+Polling.prototype.doClose = function(){
+  var self = this;
+
+  function close(){
+    debug('writing close packet');
+    self.write([{ type: 'close' }]);
+  }
+
+  if ('open' == this.readyState) {
+    debug('transport open - closing');
+    close();
+  } else {
+    // in case we're trying to close while
+    // handshaking is in progress (GH-164)
+    debug('transport not open - deferring close');
+    this.once('open', close);
+  }
+};
+
+/**
+ * Writes a packets payload.
+ *
+ * @param {Array} data packets
+ * @param {Function} drain callback
+ * @api private
+ */
+
+Polling.prototype.write = function(packets){
+  var self = this;
+  this.writable = false;
+  var callbackfn = function() {
+    self.writable = true;
+    self.emit('drain');
+  };
+
+  var self = this;
+  parser.encodePayload(packets, this.supportsBinary, function(data) {
+    self.doWrite(data, callbackfn);
+  });
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+Polling.prototype.uri = function(){
+  var query = this.query || {};
+  var schema = this.secure ? 'https' : 'http';
+  var port = '';
+
+  // cache busting is forced
+  if (false !== this.timestampRequests) {
+    query[this.timestampParam] = +new Date + '-' + Transport.timestamps++;
+  }
+
+  if (!this.supportsBinary && !query.sid) {
+    query.b64 = 1;
+  }
+
+  query = parseqs.encode(query);
+
+  // avoid port if default for schema
+  if (this.port && (('https' == schema && this.port != 443) ||
+     ('http' == schema && this.port != 80))) {
+    port = ':' + this.port;
+  }
+
+  // prepend ? to query
+  if (query.length) {
+    query = '?' + query;
+  }
+
+  return schema + '://' + this.hostname + port + this.path + query;
+};
+
+},{"../transport":14,"component-inherit":21,"debug":22,"engine.io-parser":25,"parseqs":33,"xmlhttprequest":20}],19:[function(_dereq_,module,exports){
+/**
+ * Module dependencies.
+ */
+
+var Transport = _dereq_('../transport');
+var parser = _dereq_('engine.io-parser');
+var parseqs = _dereq_('parseqs');
+var inherit = _dereq_('component-inherit');
+var debug = _dereq_('debug')('engine.io-client:websocket');
+
+/**
+ * `ws` exposes a WebSocket-compatible interface in
+ * Node, or the `WebSocket` or `MozWebSocket` globals
+ * in the browser.
+ */
+
+var WebSocket = _dereq_('ws');
+
+/**
+ * Module exports.
+ */
+
+module.exports = WS;
+
+/**
+ * WebSocket transport constructor.
+ *
+ * @api {Object} connection options
+ * @api public
+ */
+
+function WS(opts){
+  var forceBase64 = (opts && opts.forceBase64);
+  if (forceBase64) {
+    this.supportsBinary = false;
+  }
+  Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(WS, Transport);
+
+/**
+ * Transport name.
+ *
+ * @api public
+ */
+
+WS.prototype.name = 'websocket';
+
+/*
+ * WebSockets support binary
+ */
+
+WS.prototype.supportsBinary = true;
+
+/**
+ * Opens socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doOpen = function(){
+  if (!this.check()) {
+    // let probe timeout
+    return;
+  }
+
+  var self = this;
+  var uri = this.uri();
+  var protocols = void(0);
+  var opts = { agent: this.agent };
+
+  // SSL options for Node.js client
+  opts.pfx = this.pfx;
+  opts.key = this.key;
+  opts.passphrase = this.passphrase;
+  opts.cert = this.cert;
+  opts.ca = this.ca;
+  opts.ciphers = this.ciphers;
+  opts.rejectUnauthorized = this.rejectUnauthorized;
+
+  this.ws = new WebSocket(uri, protocols, opts);
+
+  if (this.ws.binaryType === undefined) {
+    this.supportsBinary = false;
+  }
+
+  this.ws.binaryType = 'arraybuffer';
+  this.addEventListeners();
+};
+
+/**
+ * Adds event listeners to the socket
+ *
+ * @api private
+ */
+
+WS.prototype.addEventListeners = function(){
+  var self = this;
+
+  this.ws.onopen = function(){
+    self.onOpen();
+  };
+  this.ws.onclose = function(){
+    self.onClose();
+  };
+  this.ws.onmessage = function(ev){
+    self.onData(ev.data);
+  };
+  this.ws.onerror = function(e){
+    self.onError('websocket error', e);
+  };
+};
+
+/**
+ * Override `onData` to use a timer on iOS.
+ * See: https://gist.github.com/mloughran/2052006
+ *
+ * @api private
+ */
+
+if ('undefined' != typeof navigator
+  && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {
+  WS.prototype.onData = function(data){
+    var self = this;
+    setTimeout(function(){
+      Transport.prototype.onData.call(self, data);
+    }, 0);
+  };
+}
+
+/**
+ * Writes data to socket.
+ *
+ * @param {Array} array of packets.
+ * @api private
+ */
+
+WS.prototype.write = function(packets){
+  var self = this;
+  this.writable = false;
+  // encodePacket efficient as it uses WS framing
+  // no need for encodePayload
+  for (var i = 0, l = packets.length; i < l; i++) {
+    parser.encodePacket(packets[i], this.supportsBinary, function(data) {
+      //Sometimes the websocket has already been closed but the browser didn't
+      //have a chance of informing us about it yet, in that case send will
+      //throw an error
+      try {
+        self.ws.send(data);
+      } catch (e){
+        debug('websocket closed before onclose event');
+      }
+    });
+  }
+
+  function ondrain() {
+    self.writable = true;
+    self.emit('drain');
+  }
+  // fake drain
+  // defer to next tick to allow Socket to clear writeBuffer
+  setTimeout(ondrain, 0);
+};
+
+/**
+ * Called upon close
+ *
+ * @api private
+ */
+
+WS.prototype.onClose = function(){
+  Transport.prototype.onClose.call(this);
+};
+
+/**
+ * Closes socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doClose = function(){
+  if (typeof this.ws !== 'undefined') {
+    this.ws.close();
+  }
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+WS.prototype.uri = function(){
+  var query = this.query || {};
+  var schema = this.secure ? 'wss' : 'ws';
+  var port = '';
+
+  // avoid port if default for schema
+  if (this.port && (('wss' == schema && this.port != 443)
+    || ('ws' == schema && this.port != 80))) {
+    port = ':' + this.port;
+  }
+
+  // append timestamp to URI
+  if (this.timestampRequests) {
+    query[this.timestampParam] = +new Date;
+  }
+
+  // communicate binary support capabilities
+  if (!this.supportsBinary) {
+    query.b64 = 1;
+  }
+
+  query = parseqs.encode(query);
+
+  // prepend ? to query
+  if (query.length) {
+    query = '?' + query;
+  }
+
+  return schema + '://' + this.hostname + port + this.path + query;
+};
+
+/**
+ * Feature detection for WebSocket.
+ *
+ * @return {Boolean} whether this transport is available.
+ * @api public
+ */
+
+WS.prototype.check = function(){
+  return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);
+};
+
+},{"../transport":14,"component-inherit":21,"debug":22,"engine.io-parser":25,"parseqs":33,"ws":35}],20:[function(_dereq_,module,exports){
+// browser shim for xmlhttprequest module
+var hasCORS = _dereq_('has-cors');
+
+module.exports = function(opts) {
+  var xdomain = opts.xdomain;
+
+  // scheme must be same when usign XDomainRequest
+  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
+  var xscheme = opts.xscheme;
+
+  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
+  // https://github.com/Automattic/engine.io-client/pull/217
+  var enablesXDR = opts.enablesXDR;
+
+  // XMLHttpRequest can be disabled on IE
+  try {
+    if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
+      return new XMLHttpRequest();
+    }
+  } catch (e) { }
+
+  // Use XDomainRequest for IE8 if enablesXDR is true
+  // because loading bar keeps flashing when using jsonp-polling
+  // https://github.com/yujiosaka/socke.io-ie8-loading-example
+  try {
+    if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {
+      return new XDomainRequest();
+    }
+  } catch (e) { }
+
+  if (!xdomain) {
+    try {
+      return new ActiveXObject('Microsoft.XMLHTTP');
+    } catch(e) { }
+  }
+}
+
+},{"has-cors":38}],21:[function(_dereq_,module,exports){
+
+module.exports = function(a, b){
+  var fn = function(){};
+  fn.prototype = b.prototype;
+  a.prototype = new fn;
+  a.prototype.constructor = a;
+};
+},{}],22:[function(_dereq_,module,exports){
+
+/**
+ * This is the web browser implementation of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = _dereq_('./debug');
+exports.log = log;
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+
+/**
+ * Colors.
+ */
+
+exports.colors = [
+  'lightseagreen',
+  'forestgreen',
+  'goldenrod',
+  'dodgerblue',
+  'darkorchid',
+  'crimson'
+];
+
+/**
+ * Currently only WebKit-based Web Inspectors, Firefox >= v31,
+ * and the Firebug extension (any Firefox version) are known
+ * to support "%c" CSS customizations.
+ *
+ * TODO: add a `localStorage` variable to explicitly enable/disable colors
+ */
+
+function useColors() {
+  // is webkit? http://stackoverflow.com/a/16459606/376773
+  return ('WebkitAppearance' in document.documentElement.style) ||
+    // is firebug? http://stackoverflow.com/a/398120/376773
+    (window.console && (console.firebug || (console.exception && console.table))) ||
+    // is firefox >= v31?
+    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
+    (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
+}
+
+/**
+ * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
+ */
+
+exports.formatters.j = function(v) {
+  return JSON.stringify(v);
+};
+
+
+/**
+ * Colorize log arguments if enabled.
+ *
+ * @api public
+ */
+
+function formatArgs() {
+  var args = arguments;
+  var useColors = this.useColors;
+
+  args[0] = (useColors ? '%c' : '')
+    + this.namespace
+    + (useColors ? ' %c' : ' ')
+    + args[0]
+    + (useColors ? '%c ' : ' ')
+    + '+' + exports.humanize(this.diff);
+
+  if (!useColors) return args;
+
+  var c = 'color: ' + this.color;
+  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));
+
+  // the final "%c" is somewhat tricky, because there could be other
+  // arguments passed either before or after the %c, so we need to
+  // figure out the correct index to insert the CSS into
+  var index = 0;
+  var lastC = 0;
+  args[0].replace(/%[a-z%]/g, function(match) {
+    if ('%' === match) return;
+    index++;
+    if ('%c' === match) {
+      // we only are interested in the *last* %c
+      // (the user may have provided their own)
+      lastC = index;
+    }
+  });
+
+  args.splice(lastC, 0, c);
+  return args;
+}
+
+/**
+ * Invokes `console.log()` when available.
+ * No-op when `console.log` is not a "function".
+ *
+ * @api public
+ */
+
+function log() {
+  // This hackery is required for IE8,
+  // where the `console.log` function doesn't have 'apply'
+  return 'object' == typeof console
+    && 'function' == typeof console.log
+    && Function.prototype.apply.call(console.log, console, arguments);
+}
+
+/**
+ * Save `namespaces`.
+ *
+ * @param {String} namespaces
+ * @api private
+ */
+
+function save(namespaces) {
+  try {
+    if (null == namespaces) {
+      localStorage.removeItem('debug');
+    } else {
+      localStorage.debug = namespaces;
+    }
+  } catch(e) {}
+}
+
+/**
+ * Load `namespaces`.
+ *
+ * @return {String} returns the previously persisted debug modes
+ * @api private
+ */
+
+function load() {
+  var r;
+  try {
+    r = localStorage.debug;
+  } catch(e) {}
+  return r;
+}
+
+/**
+ * Enable namespaces listed in `localStorage.debug` initially.
+ */
+
+exports.enable(load());
+
+},{"./debug":23}],23:[function(_dereq_,module,exports){
+
+/**
+ * This is the common logic for both the Node.js and web browser
+ * implementations of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = debug;
+exports.coerce = coerce;
+exports.disable = disable;
+exports.enable = enable;
+exports.enabled = enabled;
+exports.humanize = _dereq_('ms');
+
+/**
+ * The currently active debug mode names, and names to skip.
+ */
+
+exports.names = [];
+exports.skips = [];
+
+/**
+ * Map of special "%n" handling functions, for the debug "format" argument.
+ *
+ * Valid key names are a single, lowercased letter, i.e. "n".
+ */
+
+exports.formatters = {};
+
+/**
+ * Previously assigned color.
+ */
+
+var prevColor = 0;
+
+/**
+ * Previous log timestamp.
+ */
+
+var prevTime;
+
+/**
+ * Select a color.
+ *
+ * @return {Number}
+ * @api private
+ */
+
+function selectColor() {
+  return exports.colors[prevColor++ % exports.colors.length];
+}
+
+/**
+ * Create a debugger with the given `namespace`.
+ *
+ * @param {String} namespace
+ * @return {Function}
+ * @api public
+ */
+
+function debug(namespace) {
+
+  // define the `disabled` version
+  function disabled() {
+  }
+  disabled.enabled = false;
+
+  // define the `enabled` version
+  function enabled() {
+
+    var self = enabled;
+
+    // set `diff` timestamp
+    var curr = +new Date();
+    var ms = curr - (prevTime || curr);
+    self.diff = ms;
+    self.prev = prevTime;
+    self.curr = curr;
+    prevTime = curr;
+
+    // add the `color` if not set
+    if (null == self.useColors) self.useColors = exports.useColors();
+    if (null == self.color && self.useColors) self.color = selectColor();
+
+    var args = Array.prototype.slice.call(arguments);
+
+    args[0] = exports.coerce(args[0]);
+
+    if ('string' !== typeof args[0]) {
+      // anything else let's inspect with %o
+      args = ['%o'].concat(args);
+    }
+
+    // apply any `formatters` transformations
+    var index = 0;
+    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {
+      // if we encounter an escaped % then don't increase the array index
+      if (match === '%') return match;
+      index++;
+      var formatter = exports.formatters[format];
+      if ('function' === typeof formatter) {
+        var val = args[index];
+        match = formatter.call(self, val);
+
+        // now we need to remove `args[index]` since it's inlined in the `format`
+        args.splice(index, 1);
+        index--;
+      }
+      return match;
+    });
+
+    if ('function' === typeof exports.formatArgs) {
+      args = exports.formatArgs.apply(self, args);
+    }
+    var logFn = enabled.log || exports.log || console.log.bind(console);
+    logFn.apply(self, args);
+  }
+  enabled.enabled = true;
+
+  var fn = exports.enabled(namespace) ? enabled : disabled;
+
+  fn.namespace = namespace;
+
+  return fn;
+}
+
+/**
+ * Enables a debug mode by namespaces. This can include modes
+ * separated by a colon and wildcards.
+ *
+ * @param {String} namespaces
+ * @api public
+ */
+
+function enable(namespaces) {
+  exports.save(namespaces);
+
+  var split = (namespaces || '').split(/[\s,]+/);
+  var len = split.length;
+
+  for (var i = 0; i < len; i++) {
+    if (!split[i]) continue; // ignore empty strings
+    namespaces = split[i].replace(/\*/g, '.*?');
+    if (namespaces[0] === '-') {
+      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
+    } else {
+      exports.names.push(new RegExp('^' + namespaces + '$'));
+    }
+  }
+}
+
+/**
+ * Disable debug output.
+ *
+ * @api public
+ */
+
+function disable() {
+  exports.enable('');
+}
+
+/**
+ * Returns true if the given mode name is enabled, false otherwise.
+ *
+ * @param {String} name
+ * @return {Boolean}
+ * @api public
+ */
+
+function enabled(name) {
+  var i, len;
+  for (i = 0, len = exports.skips.length; i < len; i++) {
+    if (exports.skips[i].test(name)) {
+      return false;
+    }
+  }
+  for (i = 0, len = exports.names.length; i < len; i++) {
+    if (exports.names[i].test(name)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+/**
+ * Coerce `val`.
+ *
+ * @param {Mixed} val
+ * @return {Mixed}
+ * @api private
+ */
+
+function coerce(val) {
+  if (val instanceof Error) return val.stack || val.message;
+  return val;
+}
+
+},{"ms":24}],24:[function(_dereq_,module,exports){
+/**
+ * Helpers.
+ */
+
+var s = 1000;
+var m = s * 60;
+var h = m * 60;
+var d = h * 24;
+var y = d * 365.25;
+
+/**
+ * Parse or format the given `val`.
+ *
+ * Options:
+ *
+ *  - `long` verbose formatting [false]
+ *
+ * @param {String|Number} val
+ * @param {Object} options
+ * @return {String|Number}
+ * @api public
+ */
+
+module.exports = function(val, options){
+  options = options || {};
+  if ('string' == typeof val) return parse(val);
+  return options.long
+    ? long(val)
+    : short(val);
+};
+
+/**
+ * Parse the given `str` and return milliseconds.
+ *
+ * @param {String} str
+ * @return {Number}
+ * @api private
+ */
+
+function parse(str) {
+  var match = /^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i.exec(str);
+  if (!match) return;
+  var n = parseFloat(match[1]);
+  var type = (match[2] || 'ms').toLowerCase();
+  switch (type) {
+    case 'years':
+    case 'year':
+    case 'y':
+      return n * y;
+    case 'days':
+    case 'day':
+    case 'd':
+      return n * d;
+    case 'hours':
+    case 'hour':
+    case 'h':
+      return n * h;
+    case 'minutes':
+    case 'minute':
+    case 'm':
+      return n * m;
+    case 'seconds':
+    case 'second':
+    case 's':
+      return n * s;
+    case 'ms':
+      return n;
+  }
+}
+
+/**
+ * Short format for `ms`.
+ *
+ * @param {Number} ms
+ * @return {String}
+ * @api private
+ */
+
+function short(ms) {
+  if (ms >= d) return Math.round(ms / d) + 'd';
+  if (ms >= h) return Math.round(ms / h) + 'h';
+  if (ms >= m) return Math.round(ms / m) + 'm';
+  if (ms >= s) return Math.round(ms / s) + 's';
+  return ms + 'ms';
+}
+
+/**
+ * Long format for `ms`.
+ *
+ * @param {Number} ms
+ * @return {String}
+ * @api private
+ */
+
+function long(ms) {
+  return plural(ms, d, 'day')
+    || plural(ms, h, 'hour')
+    || plural(ms, m, 'minute')
+    || plural(ms, s, 'second')
+    || ms + ' ms';
+}
+
+/**
+ * Pluralization helper.
+ */
+
+function plural(ms, n, name) {
+  if (ms < n) return;
+  if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
+  return Math.ceil(ms / n) + ' ' + name + 's';
+}
+
+},{}],25:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Module dependencies.
+ */
+
+var keys = _dereq_('./keys');
+var hasBinary = _dereq_('has-binary');
+var sliceBuffer = _dereq_('arraybuffer.slice');
+var base64encoder = _dereq_('base64-arraybuffer');
+var after = _dereq_('after');
+var utf8 = _dereq_('utf8');
+
+/**
+ * Check if we are running an android browser. That requires us to use
+ * ArrayBuffer with polling transports...
+ *
+ * http://ghinda.net/jpeg-blob-ajax-android/
+ */
+
+var isAndroid = navigator.userAgent.match(/Android/i);
+
+/**
+ * Check if we are running in PhantomJS.
+ * Uploading a Blob with PhantomJS does not work correctly, as reported here:
+ * https://github.com/ariya/phantomjs/issues/11395
+ * @type boolean
+ */
+var isPhantomJS = /PhantomJS/i.test(navigator.userAgent);
+
+/**
+ * When true, avoids using Blobs to encode payloads.
+ * @type boolean
+ */
+var dontSendBlobs = isAndroid || isPhantomJS;
+
+/**
+ * Current protocol version.
+ */
+
+exports.protocol = 3;
+
+/**
+ * Packet types.
+ */
+
+var packets = exports.packets = {
+    open:     0    // non-ws
+  , close:    1    // non-ws
+  , ping:     2
+  , pong:     3
+  , message:  4
+  , upgrade:  5
+  , noop:     6
+};
+
+var packetslist = keys(packets);
+
+/**
+ * Premade error packet.
+ */
+
+var err = { type: 'error', data: 'parser error' };
+
+/**
+ * Create a blob api even for blob builder when vendor prefixes exist
+ */
+
+var Blob = _dereq_('blob');
+
+/**
+ * Encodes a packet.
+ *
+ *     <packet type id> [ <data> ]
+ *
+ * Example:
+ *
+ *     5hello world
+ *     3
+ *     4
+ *
+ * Binary is encoded in an identical principle
+ *
+ * @api private
+ */
+
+exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
+  if ('function' == typeof supportsBinary) {
+    callback = supportsBinary;
+    supportsBinary = false;
+  }
+
+  if ('function' == typeof utf8encode) {
+    callback = utf8encode;
+    utf8encode = null;
+  }
+
+  var data = (packet.data === undefined)
+    ? undefined
+    : packet.data.buffer || packet.data;
+
+  if (global.ArrayBuffer && data instanceof ArrayBuffer) {
+    return encodeArrayBuffer(packet, supportsBinary, callback);
+  } else if (Blob && data instanceof global.Blob) {
+    return encodeBlob(packet, supportsBinary, callback);
+  }
+
+  // might be an object with { base64: true, data: dataAsBase64String }
+  if (data && data.base64) {
+    return encodeBase64Object(packet, callback);
+  }
+
+  // Sending data as a utf-8 string
+  var encoded = packets[packet.type];
+
+  // data fragment is optional
+  if (undefined !== packet.data) {
+    encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);
+  }
+
+  return callback('' + encoded);
+
+};
+
+function encodeBase64Object(packet, callback) {
+  // packet data is an object { base64: true, data: dataAsBase64String }
+  var message = 'b' + exports.packets[packet.type] + packet.data.data;
+  return callback(message);
+}
+
+/**
+ * Encode packet helpers for binary types
+ */
+
+function encodeArrayBuffer(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  var data = packet.data;
+  var contentArray = new Uint8Array(data);
+  var resultBuffer = new Uint8Array(1 + data.byteLength);
+
+  resultBuffer[0] = packets[packet.type];
+  for (var i = 0; i < contentArray.length; i++) {
+    resultBuffer[i+1] = contentArray[i];
+  }
+
+  return callback(resultBuffer.buffer);
+}
+
+function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  var fr = new FileReader();
+  fr.onload = function() {
+    packet.data = fr.result;
+    exports.encodePacket(packet, supportsBinary, true, callback);
+  };
+  return fr.readAsArrayBuffer(packet.data);
+}
+
+function encodeBlob(packet, supportsBinary, callback) {
+  if (!supportsBinary) {
+    return exports.encodeBase64Packet(packet, callback);
+  }
+
+  if (dontSendBlobs) {
+    return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
+  }
+
+  var length = new Uint8Array(1);
+  length[0] = packets[packet.type];
+  var blob = new Blob([length.buffer, packet.data]);
+
+  return callback(blob);
+}
+
+/**
+ * Encodes a packet with binary data in a base64 string
+ *
+ * @param {Object} packet, has `type` and `data`
+ * @return {String} base64 encoded message
+ */
+
+exports.encodeBase64Packet = function(packet, callback) {
+  var message = 'b' + exports.packets[packet.type];
+  if (Blob && packet.data instanceof Blob) {
+    var fr = new FileReader();
+    fr.onload = function() {
+      var b64 = fr.result.split(',')[1];
+      callback(message + b64);
+    };
+    return fr.readAsDataURL(packet.data);
+  }
+
+  var b64data;
+  try {
+    b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
+  } catch (e) {
+    // iPhone Safari doesn't let you apply with typed arrays
+    var typed = new Uint8Array(packet.data);
+    var basic = new Array(typed.length);
+    for (var i = 0; i < typed.length; i++) {
+      basic[i] = typed[i];
+    }
+    b64data = String.fromCharCode.apply(null, basic);
+  }
+  message += global.btoa(b64data);
+  return callback(message);
+};
+
+/**
+ * Decodes a packet. Changes format to Blob if requested.
+ *
+ * @return {Object} with `type` and `data` (if any)
+ * @api private
+ */
+
+exports.decodePacket = function (data, binaryType, utf8decode) {
+  // String data
+  if (typeof data == 'string' || data === undefined) {
+    if (data.charAt(0) == 'b') {
+      return exports.decodeBase64Packet(data.substr(1), binaryType);
+    }
+
+    if (utf8decode) {
+      try {
+        data = utf8.decode(data);
+      } catch (e) {
+        return err;
+      }
+    }
+    var type = data.charAt(0);
+
+    if (Number(type) != type || !packetslist[type]) {
+      return err;
+    }
+
+    if (data.length > 1) {
+      return { type: packetslist[type], data: data.substring(1) };
+    } else {
+      return { type: packetslist[type] };
+    }
+  }
+
+  var asArray = new Uint8Array(data);
+  var type = asArray[0];
+  var rest = sliceBuffer(data, 1);
+  if (Blob && binaryType === 'blob') {
+    rest = new Blob([rest]);
+  }
+  return { type: packetslist[type], data: rest };
+};
+
+/**
+ * Decodes a packet encoded in a base64 string
+ *
+ * @param {String} base64 encoded message
+ * @return {Object} with `type` and `data` (if any)
+ */
+
+exports.decodeBase64Packet = function(msg, binaryType) {
+  var type = packetslist[msg.charAt(0)];
+  if (!global.ArrayBuffer) {
+    return { type: type, data: { base64: true, data: msg.substr(1) } };
+  }
+
+  var data = base64encoder.decode(msg.substr(1));
+
+  if (binaryType === 'blob' && Blob) {
+    data = new Blob([data]);
+  }
+
+  return { type: type, data: data };
+};
+
+/**
+ * Encodes multiple messages (payload).
+ *
+ *     <length>:data
+ *
+ * Example:
+ *
+ *     11:hello world2:hi
+ *
+ * If any contents are binary, they will be encoded as base64 strings. Base64
+ * encoded strings are marked with a b before the length specifier
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+exports.encodePayload = function (packets, supportsBinary, callback) {
+  if (typeof supportsBinary == 'function') {
+    callback = supportsBinary;
+    supportsBinary = null;
+  }
+
+  var isBinary = hasBinary(packets);
+
+  if (supportsBinary && isBinary) {
+    if (Blob && !dontSendBlobs) {
+      return exports.encodePayloadAsBlob(packets, callback);
+    }
+
+    return exports.encodePayloadAsArrayBuffer(packets, callback);
+  }
+
+  if (!packets.length) {
+    return callback('0:');
+  }
+
+  function setLengthHeader(message) {
+    return message.length + ':' + message;
+  }
+
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {
+      doneCallback(null, setLengthHeader(message));
+    });
+  }
+
+  map(packets, encodeOne, function(err, results) {
+    return callback(results.join(''));
+  });
+};
+
+/**
+ * Async array map using after
+ */
+
+function map(ary, each, done) {
+  var result = new Array(ary.length);
+  var next = after(ary.length, done);
+
+  var eachWithIndex = function(i, el, cb) {
+    each(el, function(error, msg) {
+      result[i] = msg;
+      cb(error, result);
+    });
+  };
+
+  for (var i = 0; i < ary.length; i++) {
+    eachWithIndex(i, ary[i], next);
+  }
+}
+
+/*
+ * Decodes data when a payload is maybe expected. Possible binary contents are
+ * decoded from their base64 representation
+ *
+ * @param {String} data, callback method
+ * @api public
+ */
+
+exports.decodePayload = function (data, binaryType, callback) {
+  if (typeof data != 'string') {
+    return exports.decodePayloadAsBinary(data, binaryType, callback);
+  }
+
+  if (typeof binaryType === 'function') {
+    callback = binaryType;
+    binaryType = null;
+  }
+
+  var packet;
+  if (data == '') {
+    // parser error - ignoring payload
+    return callback(err, 0, 1);
+  }
+
+  var length = ''
+    , n, msg;
+
+  for (var i = 0, l = data.length; i < l; i++) {
+    var chr = data.charAt(i);
+
+    if (':' != chr) {
+      length += chr;
+    } else {
+      if ('' == length || (length != (n = Number(length)))) {
+        // parser error - ignoring payload
+        return callback(err, 0, 1);
+      }
+
+      msg = data.substr(i + 1, n);
+
+      if (length != msg.length) {
+        // parser error - ignoring payload
+        return callback(err, 0, 1);
+      }
+
+      if (msg.length) {
+        packet = exports.decodePacket(msg, binaryType, true);
+
+        if (err.type == packet.type && err.data == packet.data) {
+          // parser error in individual packet - ignoring payload
+          return callback(err, 0, 1);
+        }
+
+        var ret = callback(packet, i + n, l);
+        if (false === ret) return;
+      }
+
+      // advance cursor
+      i += n;
+      length = '';
+    }
+  }
+
+  if (length != '') {
+    // parser error - ignoring payload
+    return callback(err, 0, 1);
+  }
+
+};
+
+/**
+ * Encodes multiple messages (payload) as binary.
+ *
+ * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
+ * 255><data>
+ *
+ * Example:
+ * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
+ *
+ * @param {Array} packets
+ * @return {ArrayBuffer} encoded payload
+ * @api private
+ */
+
+exports.encodePayloadAsArrayBuffer = function(packets, callback) {
+  if (!packets.length) {
+    return callback(new ArrayBuffer(0));
+  }
+
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, true, true, function(data) {
+      return doneCallback(null, data);
+    });
+  }
+
+  map(packets, encodeOne, function(err, encodedPackets) {
+    var totalLength = encodedPackets.reduce(function(acc, p) {
+      var len;
+      if (typeof p === 'string'){
+        len = p.length;
+      } else {
+        len = p.byteLength;
+      }
+      return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
+    }, 0);
+
+    var resultArray = new Uint8Array(totalLength);
+
+    var bufferIndex = 0;
+    encodedPackets.forEach(function(p) {
+      var isString = typeof p === 'string';
+      var ab = p;
+      if (isString) {
+        var view = new Uint8Array(p.length);
+        for (var i = 0; i < p.length; i++) {
+          view[i] = p.charCodeAt(i);
+        }
+        ab = view.buffer;
+      }
+
+      if (isString) { // not true binary
+        resultArray[bufferIndex++] = 0;
+      } else { // true binary
+        resultArray[bufferIndex++] = 1;
+      }
+
+      var lenStr = ab.byteLength.toString();
+      for (var i = 0; i < lenStr.length; i++) {
+        resultArray[bufferIndex++] = parseInt(lenStr[i]);
+      }
+      resultArray[bufferIndex++] = 255;
+
+      var view = new Uint8Array(ab);
+      for (var i = 0; i < view.length; i++) {
+        resultArray[bufferIndex++] = view[i];
+      }
+    });
+
+    return callback(resultArray.buffer);
+  });
+};
+
+/**
+ * Encode as Blob
+ */
+
+exports.encodePayloadAsBlob = function(packets, callback) {
+  function encodeOne(packet, doneCallback) {
+    exports.encodePacket(packet, true, true, function(encoded) {
+      var binaryIdentifier = new Uint8Array(1);
+      binaryIdentifier[0] = 1;
+      if (typeof encoded === 'string') {
+        var view = new Uint8Array(encoded.length);
+        for (var i = 0; i < encoded.length; i++) {
+          view[i] = encoded.charCodeAt(i);
+        }
+        encoded = view.buffer;
+        binaryIdentifier[0] = 0;
+      }
+
+      var len = (encoded instanceof ArrayBuffer)
+        ? encoded.byteLength
+        : encoded.size;
+
+      var lenStr = len.toString();
+      var lengthAry = new Uint8Array(lenStr.length + 1);
+      for (var i = 0; i < lenStr.length; i++) {
+        lengthAry[i] = parseInt(lenStr[i]);
+      }
+      lengthAry[lenStr.length] = 255;
+
+      if (Blob) {
+        var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
+        doneCallback(null, blob);
+      }
+    });
+  }
+
+  map(packets, encodeOne, function(err, results) {
+    return callback(new Blob(results));
+  });
+};
+
+/*
+ * Decodes data when a payload is maybe expected. Strings are decoded by
+ * interpreting each byte as a key code for entries marked to start with 0. See
+ * description of encodePayloadAsBinary
+ *
+ * @param {ArrayBuffer} data, callback method
+ * @api public
+ */
+
+exports.decodePayloadAsBinary = function (data, binaryType, callback) {
+  if (typeof binaryType === 'function') {
+    callback = binaryType;
+    binaryType = null;
+  }
+
+  var bufferTail = data;
+  var buffers = [];
+
+  var numberTooLong = false;
+  while (bufferTail.byteLength > 0) {
+    var tailArray = new Uint8Array(bufferTail);
+    var isString = tailArray[0] === 0;
+    var msgLength = '';
+
+    for (var i = 1; ; i++) {
+      if (tailArray[i] == 255) break;
+
+      if (msgLength.length > 310) {
+        numberTooLong = true;
+        break;
+      }
+
+      msgLength += tailArray[i];
+    }
+
+    if(numberTooLong) return callback(err, 0, 1);
+
+    bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
+    msgLength = parseInt(msgLength);
+
+    var msg = sliceBuffer(bufferTail, 0, msgLength);
+    if (isString) {
+      try {
+        msg = String.fromCharCode.apply(null, new Uint8Array(msg));
+      } catch (e) {
+        // iPhone Safari doesn't let you apply to typed arrays
+        var typed = new Uint8Array(msg);
+        msg = '';
+        for (var i = 0; i < typed.length; i++) {
+          msg += String.fromCharCode(typed[i]);
+        }
+      }
+    }
+
+    buffers.push(msg);
+    bufferTail = sliceBuffer(bufferTail, msgLength);
+  }
+
+  var total = buffers.length;
+  buffers.forEach(function(buffer, i) {
+    callback(exports.decodePacket(buffer, binaryType, true), i, total);
+  });
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./keys":26,"after":27,"arraybuffer.slice":28,"base64-arraybuffer":29,"blob":30,"has-binary":36,"utf8":31}],26:[function(_dereq_,module,exports){
+
+/**
+ * Gets the keys for an object.
+ *
+ * @return {Array} keys
+ * @api private
+ */
+
+module.exports = Object.keys || function keys (obj){
+  var arr = [];
+  var has = Object.prototype.hasOwnProperty;
+
+  for (var i in obj) {
+    if (has.call(obj, i)) {
+      arr.push(i);
+    }
+  }
+  return arr;
+};
+
+},{}],27:[function(_dereq_,module,exports){
+module.exports = after
+
+function after(count, callback, err_cb) {
+    var bail = false
+    err_cb = err_cb || noop
+    proxy.count = count
+
+    return (count === 0) ? callback() : proxy
+
+    function proxy(err, result) {
+        if (proxy.count <= 0) {
+            throw new Error('after called too many times')
+        }
+        --proxy.count
+
+        // after first error, rest are passed to err_cb
+        if (err) {
+            bail = true
+            callback(err)
+            // future error callbacks will go to error handler
+            callback = err_cb
+        } else if (proxy.count === 0 && !bail) {
+            callback(null, result)
+        }
+    }
+}
+
+function noop() {}
+
+},{}],28:[function(_dereq_,module,exports){
+/**
+ * An abstraction for slicing an arraybuffer even when
+ * ArrayBuffer.prototype.slice is not supported
+ *
+ * @api public
+ */
+
+module.exports = function(arraybuffer, start, end) {
+  var bytes = arraybuffer.byteLength;
+  start = start || 0;
+  end = end || bytes;
+
+  if (arraybuffer.slice) { return arraybuffer.slice(start, end); }
+
+  if (start < 0) { start += bytes; }
+  if (end < 0) { end += bytes; }
+  if (end > bytes) { end = bytes; }
+
+  if (start >= bytes || start >= end || bytes === 0) {
+    return new ArrayBuffer(0);
+  }
+
+  var abv = new Uint8Array(arraybuffer);
+  var result = new Uint8Array(end - start);
+  for (var i = start, ii = 0; i < end; i++, ii++) {
+    result[ii] = abv[i];
+  }
+  return result.buffer;
+};
+
+},{}],29:[function(_dereq_,module,exports){
+/*
+ * base64-arraybuffer
+ * https://github.com/niklasvh/base64-arraybuffer
+ *
+ * Copyright (c) 2012 Niklas von Hertzen
+ * Licensed under the MIT license.
+ */
+(function(chars){
+  "use strict";
+
+  exports.encode = function(arraybuffer) {
+    var bytes = new Uint8Array(arraybuffer),
+    i, len = bytes.length, base64 = "";
+
+    for (i = 0; i < len; i+=3) {
+      base64 += chars[bytes[i] >> 2];
+      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
+      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
+      base64 += chars[bytes[i + 2] & 63];
+    }
+
+    if ((len % 3) === 2) {
+      base64 = base64.substring(0, base64.length - 1) + "=";
+    } else if (len % 3 === 1) {
+      base64 = base64.substring(0, base64.length - 2) + "==";
+    }
+
+    return base64;
+  };
+
+  exports.decode =  function(base64) {
+    var bufferLength = base64.length * 0.75,
+    len = base64.length, i, p = 0,
+    encoded1, encoded2, encoded3, encoded4;
+
+    if (base64[base64.length - 1] === "=") {
+      bufferLength--;
+      if (base64[base64.length - 2] === "=") {
+        bufferLength--;
+      }
+    }
+
+    var arraybuffer = new ArrayBuffer(bufferLength),
+    bytes = new Uint8Array(arraybuffer);
+
+    for (i = 0; i < len; i+=4) {
+      encoded1 = chars.indexOf(base64[i]);
+      encoded2 = chars.indexOf(base64[i+1]);
+      encoded3 = chars.indexOf(base64[i+2]);
+      encoded4 = chars.indexOf(base64[i+3]);
+
+      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
+      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
+      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
+    }
+
+    return arraybuffer;
+  };
+})("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
+
+},{}],30:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * Create a blob builder even when vendor prefixes exist
+ */
+
+var BlobBuilder = global.BlobBuilder
+  || global.WebKitBlobBuilder
+  || global.MSBlobBuilder
+  || global.MozBlobBuilder;
+
+/**
+ * Check if Blob constructor is supported
+ */
+
+var blobSupported = (function() {
+  try {
+    var b = new Blob(['hi']);
+    return b.size == 2;
+  } catch(e) {
+    return false;
+  }
+})();
+
+/**
+ * Check if BlobBuilder is supported
+ */
+
+var blobBuilderSupported = BlobBuilder
+  && BlobBuilder.prototype.append
+  && BlobBuilder.prototype.getBlob;
+
+function BlobBuilderConstructor(ary, options) {
+  options = options || {};
+
+  var bb = new BlobBuilder();
+  for (var i = 0; i < ary.length; i++) {
+    bb.append(ary[i]);
+  }
+  return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
+};
+
+module.exports = (function() {
+  if (blobSupported) {
+    return global.Blob;
+  } else if (blobBuilderSupported) {
+    return BlobBuilderConstructor;
+  } else {
+    return undefined;
+  }
+})();
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],31:[function(_dereq_,module,exports){
+(function (global){
+/*! http://mths.be/utf8js v2.0.0 by @mathias */
+;(function(root) {
+
+	// Detect free variables `exports`
+	var freeExports = typeof exports == 'object' && exports;
+
+	// Detect free variable `module`
+	var freeModule = typeof module == 'object' && module &&
+		module.exports == freeExports && module;
+
+	// Detect free variable `global`, from Node.js or Browserified code,
+	// and use it as `root`
+	var freeGlobal = typeof global == 'object' && global;
+	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
+		root = freeGlobal;
+	}
+
+	/*--------------------------------------------------------------------------*/
+
+	var stringFromCharCode = String.fromCharCode;
+
+	// Taken from http://mths.be/punycode
+	function ucs2decode(string) {
+		var output = [];
+		var counter = 0;
+		var length = string.length;
+		var value;
+		var extra;
+		while (counter < length) {
+			value = string.charCodeAt(counter++);
+			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
+				// high surrogate, and there is a next character
+				extra = string.charCodeAt(counter++);
+				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
+					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
+				} else {
+					// unmatched surrogate; only append this code unit, in case the next
+					// code unit is the high surrogate of a surrogate pair
+					output.push(value);
+					counter--;
+				}
+			} else {
+				output.push(value);
+			}
+		}
+		return output;
+	}
+
+	// Taken from http://mths.be/punycode
+	function ucs2encode(array) {
+		var length = array.length;
+		var index = -1;
+		var value;
+		var output = '';
+		while (++index < length) {
+			value = array[index];
+			if (value > 0xFFFF) {
+				value -= 0x10000;
+				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
+				value = 0xDC00 | value & 0x3FF;
+			}
+			output += stringFromCharCode(value);
+		}
+		return output;
+	}
+
+	/*--------------------------------------------------------------------------*/
+
+	function createByte(codePoint, shift) {
+		return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
+	}
+
+	function encodeCodePoint(codePoint) {
+		if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
+			return stringFromCharCode(codePoint);
+		}
+		var symbol = '';
+		if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
+			symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
+		}
+		else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
+			symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
+			symbol += createByte(codePoint, 6);
+		}
+		else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
+			symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
+			symbol += createByte(codePoint, 12);
+			symbol += createByte(codePoint, 6);
+		}
+		symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
+		return symbol;
+	}
+
+	function utf8encode(string) {
+		var codePoints = ucs2decode(string);
+
+		// console.log(JSON.stringify(codePoints.map(function(x) {
+		// 	return 'U+' + x.toString(16).toUpperCase();
+		// })));
+
+		var length = codePoints.length;
+		var index = -1;
+		var codePoint;
+		var byteString = '';
+		while (++index < length) {
+			codePoint = codePoints[index];
+			byteString += encodeCodePoint(codePoint);
+		}
+		return byteString;
+	}
+
+	/*--------------------------------------------------------------------------*/
+
+	function readContinuationByte() {
+		if (byteIndex >= byteCount) {
+			throw Error('Invalid byte index');
+		}
+
+		var continuationByte = byteArray[byteIndex] & 0xFF;
+		byteIndex++;
+
+		if ((continuationByte & 0xC0) == 0x80) {
+			return continuationByte & 0x3F;
+		}
+
+		// If we end up here, it’s not a continuation byte
+		throw Error('Invalid continuation byte');
+	}
+
+	function decodeSymbol() {
+		var byte1;
+		var byte2;
+		var byte3;
+		var byte4;
+		var codePoint;
+
+		if (byteIndex > byteCount) {
+			throw Error('Invalid byte index');
+		}
+
+		if (byteIndex == byteCount) {
+			return false;
+		}
+
+		// Read first byte
+		byte1 = byteArray[byteIndex] & 0xFF;
+		byteIndex++;
+
+		// 1-byte sequence (no continuation bytes)
+		if ((byte1 & 0x80) == 0) {
+			return byte1;
+		}
+
+		// 2-byte sequence
+		if ((byte1 & 0xE0) == 0xC0) {
+			var byte2 = readContinuationByte();
+			codePoint = ((byte1 & 0x1F) << 6) | byte2;
+			if (codePoint >= 0x80) {
+				return codePoint;
+			} else {
+				throw Error('Invalid continuation byte');
+			}
+		}
+
+		// 3-byte sequence (may include unpaired surrogates)
+		if ((byte1 & 0xF0) == 0xE0) {
+			byte2 = readContinuationByte();
+			byte3 = readContinuationByte();
+			codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
+			if (codePoint >= 0x0800) {
+				return codePoint;
+			} else {
+				throw Error('Invalid continuation byte');
+			}
+		}
+
+		// 4-byte sequence
+		if ((byte1 & 0xF8) == 0xF0) {
+			byte2 = readContinuationByte();
+			byte3 = readContinuationByte();
+			byte4 = readContinuationByte();
+			codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
+				(byte3 << 0x06) | byte4;
+			if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
+				return codePoint;
+			}
+		}
+
+		throw Error('Invalid UTF-8 detected');
+	}
+
+	var byteArray;
+	var byteCount;
+	var byteIndex;
+	function utf8decode(byteString) {
+		byteArray = ucs2decode(byteString);
+		byteCount = byteArray.length;
+		byteIndex = 0;
+		var codePoints = [];
+		var tmp;
+		while ((tmp = decodeSymbol()) !== false) {
+			codePoints.push(tmp);
+		}
+		return ucs2encode(codePoints);
+	}
+
+	/*--------------------------------------------------------------------------*/
+
+	var utf8 = {
+		'version': '2.0.0',
+		'encode': utf8encode,
+		'decode': utf8decode
+	};
+
+	// Some AMD build optimizers, like r.js, check for specific condition patterns
+	// like the following:
+	if (
+		typeof define == 'function' &&
+		typeof define.amd == 'object' &&
+		define.amd
+	) {
+		define(function() {
+			return utf8;
+		});
+	}	else if (freeExports && !freeExports.nodeType) {
+		if (freeModule) { // in Node.js or RingoJS v0.8.0+
+			freeModule.exports = utf8;
+		} else { // in Narwhal or RingoJS v0.7.0-
+			var object = {};
+			var hasOwnProperty = object.hasOwnProperty;
+			for (var key in utf8) {
+				hasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]);
+			}
+		}
+	} else { // in Rhino or a web browser
+		root.utf8 = utf8;
+	}
+
+}(this));
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],32:[function(_dereq_,module,exports){
+(function (global){
+/**
+ * JSON parse.
+ *
+ * @see Based on jQuery#parseJSON (MIT) and JSON2
+ * @api private
+ */
+
+var rvalidchars = /^[\],:{}\s]*$/;
+var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
+var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
+var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
+var rtrimLeft = /^\s+/;
+var rtrimRight = /\s+$/;
+
+module.exports = function parsejson(data) {
+  if ('string' != typeof data || !data) {
+    return null;
+  }
+
+  data = data.replace(rtrimLeft, '').replace(rtrimRight, '');
+
+  // Attempt to parse using the native JSON parser first
+  if (global.JSON && JSON.parse) {
+    return JSON.parse(data);
+  }
+
+  if (rvalidchars.test(data.replace(rvalidescape, '@')
+      .replace(rvalidtokens, ']')
+      .replace(rvalidbraces, ''))) {
+    return (new Function('return ' + data))();
+  }
+};
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],33:[function(_dereq_,module,exports){
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+
+exports.encode = function (obj) {
+  var str = '';
+
+  for (var i in obj) {
+    if (obj.hasOwnProperty(i)) {
+      if (str.length) str += '&';
+      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+    }
+  }
+
+  return str;
+};
+
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+
+exports.decode = function(qs){
+  var qry = {};
+  var pairs = qs.split('&');
+  for (var i = 0, l = pairs.length; i < l; i++) {
+    var pair = pairs[i].split('=');
+    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+  }
+  return qry;
+};
+
+},{}],34:[function(_dereq_,module,exports){
+/**
+ * Parses an URI
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+
+var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+
+var parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+
+module.exports = function parseuri(str) {
+    var src = str,
+        b = str.indexOf('['),
+        e = str.indexOf(']');
+
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+    }
+
+    var m = re.exec(str || ''),
+        uri = {},
+        i = 14;
+
+    while (i--) {
+        uri[parts[i]] = m[i] || '';
+    }
+
+    if (b != -1 && e != -1) {
+        uri.source = src;
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+        uri.ipv6uri = true;
+    }
+
+    return uri;
+};
+
+},{}],35:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var global = (function() { return this; })();
+
+/**
+ * WebSocket constructor.
+ */
+
+var WebSocket = global.WebSocket || global.MozWebSocket;
+
+/**
+ * Module exports.
+ */
+
+module.exports = WebSocket ? ws : null;
+
+/**
+ * WebSocket constructor.
+ *
+ * The third `opts` options object gets ignored in web browsers, since it's
+ * non-standard, and throws a TypeError if passed to the constructor.
+ * See: https://github.com/einaros/ws/issues/227
+ *
+ * @param {String} uri
+ * @param {Array} protocols (optional)
+ * @param {Object) opts (optional)
+ * @api public
+ */
+
+function ws(uri, protocols, opts) {
+  var instance;
+  if (protocols) {
+    instance = new WebSocket(uri, protocols);
+  } else {
+    instance = new WebSocket(uri);
+  }
+  return instance;
+}
+
+if (WebSocket) ws.prototype = WebSocket.prototype;
+
+},{}],36:[function(_dereq_,module,exports){
+(function (global){
+
+/*
+ * Module requirements.
+ */
+
+var isArray = _dereq_('isarray');
+
+/**
+ * Module exports.
+ */
+
+module.exports = hasBinary;
+
+/**
+ * Checks for binary data.
+ *
+ * Right now only Buffer and ArrayBuffer are supported..
+ *
+ * @param {Object} anything
+ * @api public
+ */
+
+function hasBinary(data) {
+
+  function _hasBinary(obj) {
+    if (!obj) return false;
+
+    if ( (global.Buffer && global.Buffer.isBuffer(obj)) ||
+         (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
+         (global.Blob && obj instanceof Blob) ||
+         (global.File && obj instanceof File)
+        ) {
+      return true;
+    }
+
+    if (isArray(obj)) {
+      for (var i = 0; i < obj.length; i++) {
+          if (_hasBinary(obj[i])) {
+              return true;
+          }
+      }
+    } else if (obj && 'object' == typeof obj) {
+      if (obj.toJSON) {
+        obj = obj.toJSON();
+      }
+
+      for (var key in obj) {
+        if (obj.hasOwnProperty(key) && _hasBinary(obj[key])) {
+          return true;
+        }
+      }
+    }
+
+    return false;
+  }
+
+  return _hasBinary(data);
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"isarray":37}],37:[function(_dereq_,module,exports){
+module.exports = Array.isArray || function (arr) {
+  return Object.prototype.toString.call(arr) == '[object Array]';
+};
+
+},{}],38:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var global = _dereq_('global');
+
+/**
+ * Module exports.
+ *
+ * Logic borrowed from Modernizr:
+ *
+ *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
+ */
+
+try {
+  module.exports = 'XMLHttpRequest' in global &&
+    'withCredentials' in new global.XMLHttpRequest();
+} catch (err) {
+  // if XMLHttp support is disabled in IE then it will throw
+  // when trying to create
+  module.exports = false;
+}
+
+},{"global":39}],39:[function(_dereq_,module,exports){
+
+/**
+ * Returns `this`. Execute this without a "context" (i.e. without it being
+ * attached to an object of the left-hand side), and `this` points to the
+ * "global" scope of the current JS execution.
+ */
+
+module.exports = (function () { return this; })();
+
+},{}],40:[function(_dereq_,module,exports){
+
+var indexOf = [].indexOf;
+
+module.exports = function(arr, obj){
+  if (indexOf) return arr.indexOf(obj);
+  for (var i = 0; i < arr.length; ++i) {
+    if (arr[i] === obj) return i;
+  }
+  return -1;
+};
+},{}],41:[function(_dereq_,module,exports){
+
+/**
+ * HOP ref.
+ */
+
+var has = Object.prototype.hasOwnProperty;
+
+/**
+ * Return own keys in `obj`.
+ *
+ * @param {Object} obj
+ * @return {Array}
+ * @api public
+ */
+
+exports.keys = Object.keys || function(obj){
+  var keys = [];
+  for (var key in obj) {
+    if (has.call(obj, key)) {
+      keys.push(key);
+    }
+  }
+  return keys;
+};
+
+/**
+ * Return own values in `obj`.
+ *
+ * @param {Object} obj
+ * @return {Array}
+ * @api public
+ */
+
+exports.values = function(obj){
+  var vals = [];
+  for (var key in obj) {
+    if (has.call(obj, key)) {
+      vals.push(obj[key]);
+    }
+  }
+  return vals;
+};
+
+/**
+ * Merge `b` into `a`.
+ *
+ * @param {Object} a
+ * @param {Object} b
+ * @return {Object} a
+ * @api public
+ */
+
+exports.merge = function(a, b){
+  for (var key in b) {
+    if (has.call(b, key)) {
+      a[key] = b[key];
+    }
+  }
+  return a;
+};
+
+/**
+ * Return length of `obj`.
+ *
+ * @param {Object} obj
+ * @return {Number}
+ * @api public
+ */
+
+exports.length = function(obj){
+  return exports.keys(obj).length;
+};
+
+/**
+ * Check if `obj` is empty.
+ *
+ * @param {Object} obj
+ * @return {Boolean}
+ * @api public
+ */
+
+exports.isEmpty = function(obj){
+  return 0 == exports.length(obj);
+};
+},{}],42:[function(_dereq_,module,exports){
+/**
+ * Parses an URI
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+
+var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+
+var parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host'
+  , 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+
+module.exports = function parseuri(str) {
+  var m = re.exec(str || '')
+    , uri = {}
+    , i = 14;
+
+  while (i--) {
+    uri[parts[i]] = m[i] || '';
+  }
+
+  return uri;
+};
+
+},{}],43:[function(_dereq_,module,exports){
+(function (global){
+/*global Blob,File*/
+
+/**
+ * Module requirements
+ */
+
+var isArray = _dereq_('isarray');
+var isBuf = _dereq_('./is-buffer');
+
+/**
+ * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.
+ * Anything with blobs or files should be fed through removeBlobs before coming
+ * here.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @api public
+ */
+
+exports.deconstructPacket = function(packet){
+  var buffers = [];
+  var packetData = packet.data;
+
+  function _deconstructPacket(data) {
+    if (!data) return data;
+
+    if (isBuf(data)) {
+      var placeholder = { _placeholder: true, num: buffers.length };
+      buffers.push(data);
+      return placeholder;
+    } else if (isArray(data)) {
+      var newData = new Array(data.length);
+      for (var i = 0; i < data.length; i++) {
+        newData[i] = _deconstructPacket(data[i]);
+      }
+      return newData;
+    } else if ('object' == typeof data && !(data instanceof Date)) {
+      var newData = {};
+      for (var key in data) {
+        newData[key] = _deconstructPacket(data[key]);
+      }
+      return newData;
+    }
+    return data;
+  }
+
+  var pack = packet;
+  pack.data = _deconstructPacket(packetData);
+  pack.attachments = buffers.length; // number of binary 'attachments'
+  return {packet: pack, buffers: buffers};
+};
+
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @api public
+ */
+
+exports.reconstructPacket = function(packet, buffers) {
+  var curPlaceHolder = 0;
+
+  function _reconstructPacket(data) {
+    if (data && data._placeholder) {
+      var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)
+      return buf;
+    } else if (isArray(data)) {
+      for (var i = 0; i < data.length; i++) {
+        data[i] = _reconstructPacket(data[i]);
+      }
+      return data;
+    } else if (data && 'object' == typeof data) {
+      for (var key in data) {
+        data[key] = _reconstructPacket(data[key]);
+      }
+      return data;
+    }
+    return data;
+  }
+
+  packet.data = _reconstructPacket(packet.data);
+  packet.attachments = undefined; // no longer useful
+  return packet;
+};
+
+/**
+ * Asynchronously removes Blobs or Files from data via
+ * FileReader's readAsArrayBuffer method. Used before encoding
+ * data as msgpack. Calls callback with the blobless data.
+ *
+ * @param {Object} data
+ * @param {Function} callback
+ * @api private
+ */
+
+exports.removeBlobs = function(data, callback) {
+  function _removeBlobs(obj, curKey, containingObject) {
+    if (!obj) return obj;
+
+    // convert any blob
+    if ((global.Blob && obj instanceof Blob) ||
+        (global.File && obj instanceof File)) {
+      pendingBlobs++;
+
+      // async filereader
+      var fileReader = new FileReader();
+      fileReader.onload = function() { // this.result == arraybuffer
+        if (containingObject) {
+          containingObject[curKey] = this.result;
+        }
+        else {
+          bloblessData = this.result;
+        }
+
+        // if nothing pending its callback time
+        if(! --pendingBlobs) {
+          callback(bloblessData);
+        }
+      };
+
+      fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer
+    } else if (isArray(obj)) { // handle array
+      for (var i = 0; i < obj.length; i++) {
+        _removeBlobs(obj[i], i, obj);
+      }
+    } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object
+      for (var key in obj) {
+        _removeBlobs(obj[key], key, obj);
+      }
+    }
+  }
+
+  var pendingBlobs = 0;
+  var bloblessData = data;
+  _removeBlobs(bloblessData);
+  if (!pendingBlobs) {
+    callback(bloblessData);
+  }
+};
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{"./is-buffer":45,"isarray":46}],44:[function(_dereq_,module,exports){
+
+/**
+ * Module dependencies.
+ */
+
+var debug = _dereq_('debug')('socket.io-parser');
+var json = _dereq_('json3');
+var isArray = _dereq_('isarray');
+var Emitter = _dereq_('component-emitter');
+var binary = _dereq_('./binary');
+var isBuf = _dereq_('./is-buffer');
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+exports.protocol = 4;
+
+/**
+ * Packet types.
+ *
+ * @api public
+ */
+
+exports.types = [
+  'CONNECT',
+  'DISCONNECT',
+  'EVENT',
+  'BINARY_EVENT',
+  'ACK',
+  'BINARY_ACK',
+  'ERROR'
+];
+
+/**
+ * Packet type `connect`.
+ *
+ * @api public
+ */
+
+exports.CONNECT = 0;
+
+/**
+ * Packet type `disconnect`.
+ *
+ * @api public
+ */
+
+exports.DISCONNECT = 1;
+
+/**
+ * Packet type `event`.
+ *
+ * @api public
+ */
+
+exports.EVENT = 2;
+
+/**
+ * Packet type `ack`.
+ *
+ * @api public
+ */
+
+exports.ACK = 3;
+
+/**
+ * Packet type `error`.
+ *
+ * @api public
+ */
+
+exports.ERROR = 4;
+
+/**
+ * Packet type 'binary event'
+ *
+ * @api public
+ */
+
+exports.BINARY_EVENT = 5;
+
+/**
+ * Packet type `binary ack`. For acks with binary arguments.
+ *
+ * @api public
+ */
+
+exports.BINARY_ACK = 6;
+
+/**
+ * Encoder constructor.
+ *
+ * @api public
+ */
+
+exports.Encoder = Encoder;
+
+/**
+ * Decoder constructor.
+ *
+ * @api public
+ */
+
+exports.Decoder = Decoder;
+
+/**
+ * A socket.io Encoder instance
+ *
+ * @api public
+ */
+
+function Encoder() {}
+
+/**
+ * Encode a packet as a single string if non-binary, or as a
+ * buffer sequence, depending on packet type.
+ *
+ * @param {Object} obj - packet object
+ * @param {Function} callback - function to handle encodings (likely engine.write)
+ * @return Calls callback with Array of encodings
+ * @api public
+ */
+
+Encoder.prototype.encode = function(obj, callback){
+  debug('encoding packet %j', obj);
+
+  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
+    encodeAsBinary(obj, callback);
+  }
+  else {
+    var encoding = encodeAsString(obj);
+    callback([encoding]);
+  }
+};
+
+/**
+ * Encode packet as string.
+ *
+ * @param {Object} packet
+ * @return {String} encoded
+ * @api private
+ */
+
+function encodeAsString(obj) {
+  var str = '';
+  var nsp = false;
+
+  // first is type
+  str += obj.type;
+
+  // attachments if we have them
+  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
+    str += obj.attachments;
+    str += '-';
+  }
+
+  // if we have a namespace other than `/`
+  // we append it followed by a comma `,`
+  if (obj.nsp && '/' != obj.nsp) {
+    nsp = true;
+    str += obj.nsp;
+  }
+
+  // immediately followed by the id
+  if (null != obj.id) {
+    if (nsp) {
+      str += ',';
+      nsp = false;
+    }
+    str += obj.id;
+  }
+
+  // json data
+  if (null != obj.data) {
+    if (nsp) str += ',';
+    str += json.stringify(obj.data);
+  }
+
+  debug('encoded %j as %s', obj, str);
+  return str;
+}
+
+/**
+ * Encode packet as 'buffer sequence' by removing blobs, and
+ * deconstructing packet into object with placeholders and
+ * a list of buffers.
+ *
+ * @param {Object} packet
+ * @return {Buffer} encoded
+ * @api private
+ */
+
+function encodeAsBinary(obj, callback) {
+
+  function writeEncoding(bloblessData) {
+    var deconstruction = binary.deconstructPacket(bloblessData);
+    var pack = encodeAsString(deconstruction.packet);
+    var buffers = deconstruction.buffers;
+
+    buffers.unshift(pack); // add packet info to beginning of data list
+    callback(buffers); // write all the buffers
+  }
+
+  binary.removeBlobs(obj, writeEncoding);
+}
+
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ * @api public
+ */
+
+function Decoder() {
+  this.reconstructor = null;
+}
+
+/**
+ * Mix in `Emitter` with Decoder.
+ */
+
+Emitter(Decoder.prototype);
+
+/**
+ * Decodes an ecoded packet string into packet JSON.
+ *
+ * @param {String} obj - encoded packet
+ * @return {Object} packet
+ * @api public
+ */
+
+Decoder.prototype.add = function(obj) {
+  var packet;
+  if ('string' == typeof obj) {
+    packet = decodeString(obj);
+    if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet.type) { // binary packet's json
+      this.reconstructor = new BinaryReconstructor(packet);
+
+      // no attachments, labeled binary but no binary data to follow
+      if (this.reconstructor.reconPack.attachments == 0) {
+        this.emit('decoded', packet);
+      }
+    } else { // non-binary full packet
+      this.emit('decoded', packet);
+    }
+  }
+  else if (isBuf(obj) || obj.base64) { // raw binary data
+    if (!this.reconstructor) {
+      throw new Error('got binary data when not reconstructing a packet');
+    } else {
+      packet = this.reconstructor.takeBinaryData(obj);
+      if (packet) { // received final buffer
+        this.reconstructor = null;
+        this.emit('decoded', packet);
+      }
+    }
+  }
+  else {
+    throw new Error('Unknown type: ' + obj);
+  }
+};
+
+/**
+ * Decode a packet String (JSON data)
+ *
+ * @param {String} str
+ * @return {Object} packet
+ * @api private
+ */
+
+function decodeString(str) {
+  var p = {};
+  var i = 0;
+
+  // look up type
+  p.type = Number(str.charAt(0));
+  if (null == exports.types[p.type]) return error();
+
+  // look up attachments if type binary
+  if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {
+    p.attachments = '';
+    while (str.charAt(++i) != '-') {
+      p.attachments += str.charAt(i);
+    }
+    p.attachments = Number(p.attachments);
+  }
+
+  // look up namespace (if any)
+  if ('/' == str.charAt(i + 1)) {
+    p.nsp = '';
+    while (++i) {
+      var c = str.charAt(i);
+      if (',' == c) break;
+      p.nsp += c;
+      if (i + 1 == str.length) break;
+    }
+  } else {
+    p.nsp = '/';
+  }
+
+  // look up id
+  var next = str.charAt(i + 1);
+  if ('' != next && Number(next) == next) {
+    p.id = '';
+    while (++i) {
+      var c = str.charAt(i);
+      if (null == c || Number(c) != c) {
+        --i;
+        break;
+      }
+      p.id += str.charAt(i);
+      if (i + 1 == str.length) break;
+    }
+    p.id = Number(p.id);
+  }
+
+  // look up json data
+  if (str.charAt(++i)) {
+    try {
+      p.data = json.parse(str.substr(i));
+    } catch(e){
+      return error();
+    }
+  }
+
+  debug('decoded %s as %j', str, p);
+  return p;
+}
+
+/**
+ * Deallocates a parser's resources
+ *
+ * @api public
+ */
+
+Decoder.prototype.destroy = function() {
+  if (this.reconstructor) {
+    this.reconstructor.finishedReconstruction();
+  }
+};
+
+/**
+ * A manager of a binary event's 'buffer sequence'. Should
+ * be constructed whenever a packet of type BINARY_EVENT is
+ * decoded.
+ *
+ * @param {Object} packet
+ * @return {BinaryReconstructor} initialized reconstructor
+ * @api private
+ */
+
+function BinaryReconstructor(packet) {
+  this.reconPack = packet;
+  this.buffers = [];
+}
+
+/**
+ * Method to be called when binary data received from connection
+ * after a BINARY_EVENT packet.
+ *
+ * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+ * @return {null | Object} returns null if more binary data is expected or
+ *   a reconstructed packet object if all buffers have been received.
+ * @api private
+ */
+
+BinaryReconstructor.prototype.takeBinaryData = function(binData) {
+  this.buffers.push(binData);
+  if (this.buffers.length == this.reconPack.attachments) { // done with buffer list
+    var packet = binary.reconstructPacket(this.reconPack, this.buffers);
+    this.finishedReconstruction();
+    return packet;
+  }
+  return null;
+};
+
+/**
+ * Cleans up binary packet reconstruction variables.
+ *
+ * @api private
+ */
+
+BinaryReconstructor.prototype.finishedReconstruction = function() {
+  this.reconPack = null;
+  this.buffers = [];
+};
+
+function error(data){
+  return {
+    type: exports.ERROR,
+    data: 'parser error'
+  };
+}
+
+},{"./binary":43,"./is-buffer":45,"component-emitter":9,"debug":10,"isarray":46,"json3":47}],45:[function(_dereq_,module,exports){
+(function (global){
+
+module.exports = isBuf;
+
+/**
+ * Returns true if obj is a buffer or an arraybuffer.
+ *
+ * @api private
+ */
+
+function isBuf(obj) {
+  return (global.Buffer && global.Buffer.isBuffer(obj)) ||
+         (global.ArrayBuffer && obj instanceof ArrayBuffer);
+}
+
+}).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
+},{}],46:[function(_dereq_,module,exports){
+module.exports=_dereq_(37)
+},{}],47:[function(_dereq_,module,exports){
+/*! JSON v3.2.6 | http://bestiejs.github.io/json3 | Copyright 2012-2013, Kit Cambridge | http://kit.mit-license.org */
+;(function (window) {
+  // Convenience aliases.
+  var getClass = {}.toString, isProperty, forEach, undef;
+
+  // Detect the `define` function exposed by asynchronous module loaders. The
+  // strict `define` check is necessary for compatibility with `r.js`.
+  var isLoader = typeof define === "function" && define.amd;
+
+  // Detect native implementations.
+  var nativeJSON = typeof JSON == "object" && JSON;
+
+  // Set up the JSON 3 namespace, preferring the CommonJS `exports` object if
+  // available.
+  var JSON3 = typeof exports == "object" && exports && !exports.nodeType && exports;
+
+  if (JSON3 && nativeJSON) {
+    // Explicitly delegate to the native `stringify` and `parse`
+    // implementations in CommonJS environments.
+    JSON3.stringify = nativeJSON.stringify;
+    JSON3.parse = nativeJSON.parse;
+  } else {
+    // Export for web browsers, JavaScript engines, and asynchronous module
+    // loaders, using the global `JSON` object if available.
+    JSON3 = window.JSON = nativeJSON || {};
+  }
+
+  // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
+  var isExtended = new Date(-3509827334573292);
+  try {
+    // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
+    // results for certain dates in Opera >= 10.53.
+    isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
+      // Safari < 2.0.2 stores the internal millisecond time value correctly,
+      // but clips the values returned by the date methods to the range of
+      // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
+      isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
+  } catch (exception) {}
+
+  // Internal: Determines whether the native `JSON.stringify` and `parse`
+  // implementations are spec-compliant. Based on work by Ken Snyder.
+  function has(name) {
+    if (has[name] !== undef) {
+      // Return cached feature test result.
+      return has[name];
+    }
+
+    var isSupported;
+    if (name == "bug-string-char-index") {
+      // IE <= 7 doesn't support accessing string characters using square
+      // bracket notation. IE 8 only supports this for primitives.
+      isSupported = "a"[0] != "a";
+    } else if (name == "json") {
+      // Indicates whether both `JSON.stringify` and `JSON.parse` are
+      // supported.
+      isSupported = has("json-stringify") && has("json-parse");
+    } else {
+      var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
+      // Test `JSON.stringify`.
+      if (name == "json-stringify") {
+        var stringify = JSON3.stringify, stringifySupported = typeof stringify == "function" && isExtended;
+        if (stringifySupported) {
+          // A test function object with a custom `toJSON` method.
+          (value = function () {
+            return 1;
+          }).toJSON = value;
+          try {
+            stringifySupported =
+              // Firefox 3.1b1 and b2 serialize string, number, and boolean
+              // primitives as object literals.
+              stringify(0) === "0" &&
+              // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
+              // literals.
+              stringify(new Number()) === "0" &&
+              stringify(new String()) == '""' &&
+              // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
+              // does not define a canonical JSON representation (this applies to
+              // objects with `toJSON` properties as well, *unless* they are nested
+              // within an object or array).
+              stringify(getClass) === undef &&
+              // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
+              // FF 3.1b3 pass this test.
+              stringify(undef) === undef &&
+              // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
+              // respectively, if the value is omitted entirely.
+              stringify() === undef &&
+              // FF 3.1b1, 2 throw an error if the given value is not a number,
+              // string, array, object, Boolean, or `null` literal. This applies to
+              // objects with custom `toJSON` methods as well, unless they are nested
+              // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
+              // methods entirely.
+              stringify(value) === "1" &&
+              stringify([value]) == "[1]" &&
+              // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
+              // `"[null]"`.
+              stringify([undef]) == "[null]" &&
+              // YUI 3.0.0b1 fails to serialize `null` literals.
+              stringify(null) == "null" &&
+              // FF 3.1b1, 2 halts serialization if an array contains a function:
+              // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
+              // elides non-JSON values from objects and arrays, unless they
+              // define custom `toJSON` methods.
+              stringify([undef, getClass, null]) == "[null,null,null]" &&
+              // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
+              // where character escape codes are expected (e.g., `\b` => `\u0008`).
+              stringify({ "a": [value, true, false, null, "\x00\b\n\f\r\t"] }) == serialized &&
+              // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
+              stringify(null, value) === "1" &&
+              stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
+              // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
+              // serialize extended years.
+              stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
+              // The milliseconds are optional in ES 5, but required in 5.1.
+              stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
+              // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
+              // four-digit years instead of six-digit years. Credits: @Yaffle.
+              stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
+              // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
+              // values less than 1000. Credits: @Yaffle.
+              stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
+          } catch (exception) {
+            stringifySupported = false;
+          }
+        }
+        isSupported = stringifySupported;
+      }
+      // Test `JSON.parse`.
+      if (name == "json-parse") {
+        var parse = JSON3.parse;
+        if (typeof parse == "function") {
+          try {
+            // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
+            // Conforming implementations should also coerce the initial argument to
+            // a string prior to parsing.
+            if (parse("0") === 0 && !parse(false)) {
+              // Simple parsing test.
+              value = parse(serialized);
+              var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
+              if (parseSupported) {
+                try {
+                  // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
+                  parseSupported = !parse('"\t"');
+                } catch (exception) {}
+                if (parseSupported) {
+                  try {
+                    // FF 4.0 and 4.0.1 allow leading `+` signs and leading
+                    // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
+                    // certain octal literals.
+                    parseSupported = parse("01") !== 1;
+                  } catch (exception) {}
+                }
+                if (parseSupported) {
+                  try {
+                    // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
+                    // points. These environments, along with FF 3.1b1 and 2,
+                    // also allow trailing commas in JSON objects and arrays.
+                    parseSupported = parse("1.") !== 1;
+                  } catch (exception) {}
+                }
+              }
+            }
+          } catch (exception) {
+            parseSupported = false;
+          }
+        }
+        isSupported = parseSupported;
+      }
+    }
+    return has[name] = !!isSupported;
+  }
+
+  if (!has("json")) {
+    // Common `[[Class]]` name aliases.
+    var functionClass = "[object Function]";
+    var dateClass = "[object Date]";
+    var numberClass = "[object Number]";
+    var stringClass = "[object String]";
+    var arrayClass = "[object Array]";
+    var booleanClass = "[object Boolean]";
+
+    // Detect incomplete support for accessing string characters by index.
+    var charIndexBuggy = has("bug-string-char-index");
+
+    // Define additional utility methods if the `Date` methods are buggy.
+    if (!isExtended) {
+      var floor = Math.floor;
+      // A mapping between the months of the year and the number of days between
+      // January 1st and the first of the respective month.
+      var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
+      // Internal: Calculates the number of days between the Unix epoch and the
+      // first day of the given month.
+      var getDay = function (year, month) {
+        return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
+      };
+    }
+
+    // Internal: Determines if a property is a direct property of the given
+    // object. Delegates to the native `Object#hasOwnProperty` method.
+    if (!(isProperty = {}.hasOwnProperty)) {
+      isProperty = function (property) {
+        var members = {}, constructor;
+        if ((members.__proto__ = null, members.__proto__ = {
+          // The *proto* property cannot be set multiple times in recent
+          // versions of Firefox and SeaMonkey.
+          "toString": 1
+        }, members).toString != getClass) {
+          // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
+          // supports the mutable *proto* property.
+          isProperty = function (property) {
+            // Capture and break the object's prototype chain (see section 8.6.2
+            // of the ES 5.1 spec). The parenthesized expression prevents an
+            // unsafe transformation by the Closure Compiler.
+            var original = this.__proto__, result = property in (this.__proto__ = null, this);
+            // Restore the original prototype chain.
+            this.__proto__ = original;
+            return result;
+          };
+        } else {
+          // Capture a reference to the top-level `Object` constructor.
+          constructor = members.constructor;
+          // Use the `constructor` property to simulate `Object#hasOwnProperty` in
+          // other environments.
+          isProperty = function (property) {
+            var parent = (this.constructor || constructor).prototype;
+            return property in this && !(property in parent && this[property] === parent[property]);
+          };
+        }
+        members = null;
+        return isProperty.call(this, property);
+      };
+    }
+
+    // Internal: A set of primitive types used by `isHostType`.
+    var PrimitiveTypes = {
+      'boolean': 1,
+      'number': 1,
+      'string': 1,
+      'undefined': 1
+    };
+
+    // Internal: Determines if the given object `property` value is a
+    // non-primitive.
+    var isHostType = function (object, property) {
+      var type = typeof object[property];
+      return type == 'object' ? !!object[property] : !PrimitiveTypes[type];
+    };
+
+    // Internal: Normalizes the `for...in` iteration algorithm across
+    // environments. Each enumerated key is yielded to a `callback` function.
+    forEach = function (object, callback) {
+      var size = 0, Properties, members, property;
+
+      // Tests for bugs in the current environment's `for...in` algorithm. The
+      // `valueOf` property inherits the non-enumerable flag from
+      // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
+      (Properties = function () {
+        this.valueOf = 0;
+      }).prototype.valueOf = 0;
+
+      // Iterate over a new instance of the `Properties` class.
+      members = new Properties();
+      for (property in members) {
+        // Ignore all properties inherited from `Object.prototype`.
+        if (isProperty.call(members, property)) {
+          size++;
+        }
+      }
+      Properties = members = null;
+
+      // Normalize the iteration algorithm.
+      if (!size) {
+        // A list of non-enumerable properties inherited from `Object.prototype`.
+        members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
+        // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
+        // properties.
+        forEach = function (object, callback) {
+          var isFunction = getClass.call(object) == functionClass, property, length;
+          var hasProperty = !isFunction && typeof object.constructor != 'function' && isHostType(object, 'hasOwnProperty') ? object.hasOwnProperty : isProperty;
+          for (property in object) {
+            // Gecko <= 1.0 enumerates the `prototype` property of functions under
+            // certain conditions; IE does not.
+            if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
+              callback(property);
+            }
+          }
+          // Manually invoke the callback for each non-enumerable property.
+          for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));
+        };
+      } else if (size == 2) {
+        // Safari <= 2.0.4 enumerates shadowed properties twice.
+        forEach = function (object, callback) {
+          // Create a set of iterated properties.
+          var members = {}, isFunction = getClass.call(object) == functionClass, property;
+          for (property in object) {
+            // Store each property name to prevent double enumeration. The
+            // `prototype` property of functions is not enumerated due to cross-
+            // environment inconsistencies.
+            if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
+              callback(property);
+            }
+          }
+        };
+      } else {
+        // No bugs detected; use the standard `for...in` algorithm.
+        forEach = function (object, callback) {
+          var isFunction = getClass.call(object) == functionClass, property, isConstructor;
+          for (property in object) {
+            if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
+              callback(property);
+            }
+          }
+          // Manually invoke the callback for the `constructor` property due to
+          // cross-environment inconsistencies.
+          if (isConstructor || isProperty.call(object, (property = "constructor"))) {
+            callback(property);
+          }
+        };
+      }
+      return forEach(object, callback);
+    };
+
+    // Public: Serializes a JavaScript `value` as a JSON string. The optional
+    // `filter` argument may specify either a function that alters how object and
+    // array members are serialized, or an array of strings and numbers that
+    // indicates which properties should be serialized. The optional `width`
+    // argument may be either a string or number that specifies the indentation
+    // level of the output.
+    if (!has("json-stringify")) {
+      // Internal: A map of control characters and their escaped equivalents.
+      var Escapes = {
+        92: "\\\\",
+        34: '\\"',
+        8: "\\b",
+        12: "\\f",
+        10: "\\n",
+        13: "\\r",
+        9: "\\t"
+      };
+
+      // Internal: Converts `value` into a zero-padded string such that its
+      // length is at least equal to `width`. The `width` must be <= 6.
+      var leadingZeroes = "000000";
+      var toPaddedString = function (width, value) {
+        // The `|| 0` expression is necessary to work around a bug in
+        // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
+        return (leadingZeroes + (value || 0)).slice(-width);
+      };
+
+      // Internal: Double-quotes a string `value`, replacing all ASCII control
+      // characters (characters with code unit values between 0 and 31) with
+      // their escaped equivalents. This is an implementation of the
+      // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
+      var unicodePrefix = "\\u00";
+      var quote = function (value) {
+        var result = '"', index = 0, length = value.length, isLarge = length > 10 && charIndexBuggy, symbols;
+        if (isLarge) {
+          symbols = value.split("");
+        }
+        for (; index < length; index++) {
+          var charCode = value.charCodeAt(index);
+          // If the character is a control character, append its Unicode or
+          // shorthand escape sequence; otherwise, append the character as-is.
+          switch (charCode) {
+            case 8: case 9: case 10: case 12: case 13: case 34: case 92:
+              result += Escapes[charCode];
+              break;
+            default:
+              if (charCode < 32) {
+                result += unicodePrefix + toPaddedString(2, charCode.toString(16));
+                break;
+              }
+              result += isLarge ? symbols[index] : charIndexBuggy ? value.charAt(index) : value[index];
+          }
+        }
+        return result + '"';
+      };
+
+      // Internal: Recursively serializes an object. Implements the
+      // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
+      var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
+        var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;
+        try {
+          // Necessary for host object support.
+          value = object[property];
+        } catch (exception) {}
+        if (typeof value == "object" && value) {
+          className = getClass.call(value);
+          if (className == dateClass && !isProperty.call(value, "toJSON")) {
+            if (value > -1 / 0 && value < 1 / 0) {
+              // Dates are serialized according to the `Date#toJSON` method
+              // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
+              // for the ISO 8601 date time string format.
+              if (getDay) {
+                // Manually compute the year, month, date, hours, minutes,
+                // seconds, and milliseconds if the `getUTC*` methods are
+                // buggy. Adapted from @Yaffle's `date-shim` project.
+                date = floor(value / 864e5);
+                for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);
+                for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);
+                date = 1 + date - getDay(year, month);
+                // The `time` value specifies the time within the day (see ES
+                // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
+                // to compute `A modulo B`, as the `%` operator does not
+                // correspond to the `modulo` operation for negative numbers.
+                time = (value % 864e5 + 864e5) % 864e5;
+                // The hours, minutes, seconds, and milliseconds are obtained by
+                // decomposing the time within the day. See section 15.9.1.10.
+                hours = floor(time / 36e5) % 24;
+                minutes = floor(time / 6e4) % 60;
+                seconds = floor(time / 1e3) % 60;
+                milliseconds = time % 1e3;
+              } else {
+                year = value.getUTCFullYear();
+                month = value.getUTCMonth();
+                date = value.getUTCDate();
+                hours = value.getUTCHours();
+                minutes = value.getUTCMinutes();
+                seconds = value.getUTCSeconds();
+                milliseconds = value.getUTCMilliseconds();
+              }
+              // Serialize extended years correctly.
+              value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
+                "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
+                // Months, dates, hours, minutes, and seconds should have two
+                // digits; milliseconds should have three.
+                "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
+                // Milliseconds are optional in ES 5.0, but required in 5.1.
+                "." + toPaddedString(3, milliseconds) + "Z";
+            } else {
+              value = null;
+            }
+          } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
+            // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
+            // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
+            // ignores all `toJSON` methods on these objects unless they are
+            // defined directly on an instance.
+            value = value.toJSON(property);
+          }
+        }
+        if (callback) {
+          // If a replacement function was provided, call it to obtain the value
+          // for serialization.
+          value = callback.call(object, property, value);
+        }
+        if (value === null) {
+          return "null";
+        }
+        className = getClass.call(value);
+        if (className == booleanClass) {
+          // Booleans are represented literally.
+          return "" + value;
+        } else if (className == numberClass) {
+          // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
+          // `"null"`.
+          return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
+        } else if (className == stringClass) {
+          // Strings are double-quoted and escaped.
+          return quote("" + value);
+        }
+        // Recursively serialize objects and arrays.
+        if (typeof value == "object") {
+          // Check for cyclic structures. This is a linear search; performance
+          // is inversely proportional to the number of unique nested objects.
+          for (length = stack.length; length--;) {
+            if (stack[length] === value) {
+              // Cyclic structures cannot be serialized by `JSON.stringify`.
+              throw TypeError();
+            }
+          }
+          // Add the object to the stack of traversed objects.
+          stack.push(value);
+          results = [];
+          // Save the current indentation level and indent one additional level.
+          prefix = indentation;
+          indentation += whitespace;
+          if (className == arrayClass) {
+            // Recursively serialize array elements.
+            for (index = 0, length = value.length; index < length; index++) {
+              element = serialize(index, value, callback, properties, whitespace, indentation, stack);
+              results.push(element === undef ? "null" : element);
+            }
+            result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
+          } else {
+            // Recursively serialize object members. Members are selected from
+            // either a user-specified list of property names, or the object
+            // itself.
+            forEach(properties || value, function (property) {
+              var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
+              if (element !== undef) {
+                // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
+                // is not the empty string, let `member` {quote(property) + ":"}
+                // be the concatenation of `member` and the `space` character."
+                // The "`space` character" refers to the literal space
+                // character, not the `space` {width} argument provided to
+                // `JSON.stringify`.
+                results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
+              }
+            });
+            result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
+          }
+          // Remove the object from the traversed object stack.
+          stack.pop();
+          return result;
+        }
+      };
+
+      // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
+      JSON3.stringify = function (source, filter, width) {
+        var whitespace, callback, properties, className;
+        if (typeof filter == "function" || typeof filter == "object" && filter) {
+          if ((className = getClass.call(filter)) == functionClass) {
+            callback = filter;
+          } else if (className == arrayClass) {
+            // Convert the property names array into a makeshift set.
+            properties = {};
+            for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));
+          }
+        }
+        if (width) {
+          if ((className = getClass.call(width)) == numberClass) {
+            // Convert the `width` to an integer and create a string containing
+            // `width` number of space characters.
+            if ((width -= width % 1) > 0) {
+              for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ");
+            }
+          } else if (className == stringClass) {
+            whitespace = width.length <= 10 ? width : width.slice(0, 10);
+          }
+        }
+        // Opera <= 7.54u2 discards the values associated with empty string keys
+        // (`""`) only if they are used directly within an object member list
+        // (e.g., `!("" in { "": 1})`).
+        return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
+      };
+    }
+
+    // Public: Parses a JSON source string.
+    if (!has("json-parse")) {
+      var fromCharCode = String.fromCharCode;
+
+      // Internal: A map of escaped control characters and their unescaped
+      // equivalents.
+      var Unescapes = {
+        92: "\\",
+        34: '"',
+        47: "/",
+        98: "\b",
+        116: "\t",
+        110: "\n",
+        102: "\f",
+        114: "\r"
+      };
+
+      // Internal: Stores the parser state.
+      var Index, Source;
+
+      // Internal: Resets the parser state and throws a `SyntaxError`.
+      var abort = function() {
+        Index = Source = null;
+        throw SyntaxError();
+      };
+
+      // Internal: Returns the next token, or `"$"` if the parser has reached
+      // the end of the source string. A token may be a string, number, `null`
+      // literal, or Boolean literal.
+      var lex = function () {
+        var source = Source, length = source.length, value, begin, position, isSigned, charCode;
+        while (Index < length) {
+          charCode = source.charCodeAt(Index);
+          switch (charCode) {
+            case 9: case 10: case 13: case 32:
+              // Skip whitespace tokens, including tabs, carriage returns, line
+              // feeds, and space characters.
+              Index++;
+              break;
+            case 123: case 125: case 91: case 93: case 58: case 44:
+              // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
+              // the current position.
+              value = charIndexBuggy ? source.charAt(Index) : source[Index];
+              Index++;
+              return value;
+            case 34:
+              // `"` delimits a JSON string; advance to the next character and
+              // begin parsing the string. String tokens are prefixed with the
+              // sentinel `@` character to distinguish them from punctuators and
+              // end-of-string tokens.
+              for (value = "@", Index++; Index < length;) {
+                charCode = source.charCodeAt(Index);
+                if (charCode < 32) {
+                  // Unescaped ASCII control characters (those with a code unit
+                  // less than the space character) are not permitted.
+                  abort();
+                } else if (charCode == 92) {
+                  // A reverse solidus (`\`) marks the beginning of an escaped
+                  // control character (including `"`, `\`, and `/`) or Unicode
+                  // escape sequence.
+                  charCode = source.charCodeAt(++Index);
+                  switch (charCode) {
+                    case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:
+                      // Revive escaped control characters.
+                      value += Unescapes[charCode];
+                      Index++;
+                      break;
+                    case 117:
+                      // `\u` marks the beginning of a Unicode escape sequence.
+                      // Advance to the first character and validate the
+                      // four-digit code point.
+                      begin = ++Index;
+                      for (position = Index + 4; Index < position; Index++) {
+                        charCode = source.charCodeAt(Index);
+                        // A valid sequence comprises four hexdigits (case-
+                        // insensitive) that form a single hexadecimal value.
+                        if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
+                          // Invalid Unicode escape sequence.
+                          abort();
+                        }
+                      }
+                      // Revive the escaped character.
+                      value += fromCharCode("0x" + source.slice(begin, Index));
+                      break;
+                    default:
+                      // Invalid escape sequence.
+                      abort();
+                  }
+                } else {
+                  if (charCode == 34) {
+                    // An unescaped double-quote character marks the end of the
+                    // string.
+                    break;
+                  }
+                  charCode = source.charCodeAt(Index);
+                  begin = Index;
+                  // Optimize for the common case where a string is valid.
+                  while (charCode >= 32 && charCode != 92 && charCode != 34) {
+                    charCode = source.charCodeAt(++Index);
+                  }
+                  // Append the string as-is.
+                  value += source.slice(begin, Index);
+                }
+              }
+              if (source.charCodeAt(Index) == 34) {
+                // Advance to the next character and return the revived string.
+                Index++;
+                return value;
+              }
+              // Unterminated string.
+              abort();
+            default:
+              // Parse numbers and literals.
+              begin = Index;
+              // Advance past the negative sign, if one is specified.
+              if (charCode == 45) {
+                isSigned = true;
+                charCode = source.charCodeAt(++Index);
+              }
+              // Parse an integer or floating-point value.
+              if (charCode >= 48 && charCode <= 57) {
+                // Leading zeroes are interpreted as octal literals.
+                if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
+                  // Illegal octal literal.
+                  abort();
+                }
+                isSigned = false;
+                // Parse the integer component.
+                for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);
+                // Floats cannot contain a leading decimal point; however, this
+                // case is already accounted for by the parser.
+                if (source.charCodeAt(Index) == 46) {
+                  position = ++Index;
+                  // Parse the decimal component.
+                  for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
+                  if (position == Index) {
+                    // Illegal trailing decimal.
+                    abort();
+                  }
+                  Index = position;
+                }
+                // Parse exponents. The `e` denoting the exponent is
+                // case-insensitive.
+                charCode = source.charCodeAt(Index);
+                if (charCode == 101 || charCode == 69) {
+                  charCode = source.charCodeAt(++Index);
+                  // Skip past the sign following the exponent, if one is
+                  // specified.
+                  if (charCode == 43 || charCode == 45) {
+                    Index++;
+                  }
+                  // Parse the exponential component.
+                  for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
+                  if (position == Index) {
+                    // Illegal empty exponent.
+                    abort();
+                  }
+                  Index = position;
+                }
+                // Coerce the parsed value to a JavaScript number.
+                return +source.slice(begin, Index);
+              }
+              // A negative sign may only precede numbers.
+              if (isSigned) {
+                abort();
+              }
+              // `true`, `false`, and `null` literals.
+              if (source.slice(Index, Index + 4) == "true") {
+                Index += 4;
+                return true;
+              } else if (source.slice(Index, Index + 5) == "false") {
+                Index += 5;
+                return false;
+              } else if (source.slice(Index, Index + 4) == "null") {
+                Index += 4;
+                return null;
+              }
+              // Unrecognized token.
+              abort();
+          }
+        }
+        // Return the sentinel `$` character if the parser has reached the end
+        // of the source string.
+        return "$";
+      };
+
+      // Internal: Parses a JSON `value` token.
+      var get = function (value) {
+        var results, hasMembers;
+        if (value == "$") {
+          // Unexpected end of input.
+          abort();
+        }
+        if (typeof value == "string") {
+          if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
+            // Remove the sentinel `@` character.
+            return value.slice(1);
+          }
+          // Parse object and array literals.
+          if (value == "[") {
+            // Parses a JSON array, returning a new JavaScript array.
+            results = [];
+            for (;; hasMembers || (hasMembers = true)) {
+              value = lex();
+              // A closing square bracket marks the end of the array literal.
+              if (value == "]") {
+                break;
+              }
+              // If the array literal contains elements, the current token
+              // should be a comma separating the previous element from the
+              // next.
+              if (hasMembers) {
+                if (value == ",") {
+                  value = lex();
+                  if (value == "]") {
+                    // Unexpected trailing `,` in array literal.
+                    abort();
+                  }
+                } else {
+                  // A `,` must separate each array element.
+                  abort();
+                }
+              }
+              // Elisions and leading commas are not permitted.
+              if (value == ",") {
+                abort();
+              }
+              results.push(get(value));
+            }
+            return results;
+          } else if (value == "{") {
+            // Parses a JSON object, returning a new JavaScript object.
+            results = {};
+            for (;; hasMembers || (hasMembers = true)) {
+              value = lex();
+              // A closing curly brace marks the end of the object literal.
+              if (value == "}") {
+                break;
+              }
+              // If the object literal contains members, the current token
+              // should be a comma separator.
+              if (hasMembers) {
+                if (value == ",") {
+                  value = lex();
+                  if (value == "}") {
+                    // Unexpected trailing `,` in object literal.
+                    abort();
+                  }
+                } else {
+                  // A `,` must separate each object member.
+                  abort();
+                }
+              }
+              // Leading commas are not permitted, object property names must be
+              // double-quoted strings, and a `:` must separate each property
+              // name and value.
+              if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
+                abort();
+              }
+              results[value.slice(1)] = get(lex());
+            }
+            return results;
+          }
+          // Unexpected token encountered.
+          abort();
+        }
+        return value;
+      };
+
+      // Internal: Updates a traversed object member.
+      var update = function(source, property, callback) {
+        var element = walk(source, property, callback);
+        if (element === undef) {
+          delete source[property];
+        } else {
+          source[property] = element;
+        }
+      };
+
+      // Internal: Recursively traverses a parsed JSON object, invoking the
+      // `callback` function for each value. This is an implementation of the
+      // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
+      var walk = function (source, property, callback) {
+        var value = source[property], length;
+        if (typeof value == "object" && value) {
+          // `forEach` can't be used to traverse an array in Opera <= 8.54
+          // because its `Object#hasOwnProperty` implementation returns `false`
+          // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
+          if (getClass.call(value) == arrayClass) {
+            for (length = value.length; length--;) {
+              update(value, length, callback);
+            }
+          } else {
+            forEach(value, function (property) {
+              update(value, property, callback);
+            });
+          }
+        }
+        return callback.call(source, property, value);
+      };
+
+      // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
+      JSON3.parse = function (source, callback) {
+        var result, value;
+        Index = 0;
+        Source = "" + source;
+        result = get(lex());
+        // If a JSON string contains multiple tokens, it is invalid.
+        if (lex() != "$") {
+          abort();
+        }
+        // Reset the parser state.
+        Index = Source = null;
+        return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
+      };
+    }
+  }
+
+  // Export for asynchronous module loaders.
+  if (isLoader) {
+    define(function () {
+      return JSON3;
+    });
+  }
+}(this));
+
+},{}],48:[function(_dereq_,module,exports){
+module.exports = toArray
+
+function toArray(list, index) {
+    var array = []
+
+    index = index || 0
+
+    for (var i = index || 0; i < list.length; i++) {
+        array[i - index] = list[i]
+    }
+
+    return array
+}
+
+},{}]},{},[1])
+(1)
+});
diff --git a/v3/js/togetherjs/README b/v3/js/togetherjs/README
new file mode 100644
index 000000000..b82f23b8a
--- /dev/null
+++ b/v3/js/togetherjs/README
@@ -0,0 +1,3 @@
+These files are all synced from my own modified fork of TogetherJS:
+
+https://github.com/pgbovine/togetherjs
diff --git a/v3/js/togetherjs/togetherjs-min.js b/v3/js/togetherjs/togetherjs-min.js
new file mode 100644
index 000000000..67b5b9883
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs-min.js
@@ -0,0 +1,905 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*jshint scripturl:true */
+(function () {
+
+  var defaultConfiguration = {
+    // Disables clicks for a certain element.
+    // (e.g., 'canvas' would not show clicks on canvas elements.)
+    // Setting this to true will disable clicks globally.
+    dontShowClicks: false,
+    // Experimental feature to echo clicks to certain elements across clients:
+    cloneClicks: false,
+    // Enable Mozilla or Google analytics on the page when TogetherJS is activated:
+    // FIXME: these don't seem to be working, and probably should be removed in favor
+    // of the hub analytics
+    enableAnalytics: false,
+    // The code to enable (this is defaulting to a Mozilla code):
+    analyticsCode: "UA-35433268-28",
+    // The base URL of the hub (gets filled in below):
+    hubBase: null,
+    // A function that will return the name of the user:
+    getUserName: null,
+    // A function that will return the color of the user:
+    getUserColor: null,
+    // A function that will return the avatar of the user:
+    getUserAvatar: null,
+    // The siteName is used in the walkthrough (defaults to document.title):
+    siteName: null,
+    // Whether to use the minimized version of the code (overriding the built setting)
+    useMinimizedCode: undefined,
+    // Any events to bind to
+    on: {},
+    // Hub events to bind to
+    hub_on: {},
+    // Enables the alt-T alt-T TogetherJS shortcut; however, this setting
+    // must be enabled early as TogetherJSConfig_enableShortcut = true;
+    enableShortcut: false,
+    // The name of this tool as provided to users.  The UI is updated to use this.
+    // Because of how it is used in text it should be a proper noun, e.g.,
+    // "MySite's Collaboration Tool"
+    toolName: null,
+    // Used to auto-start TogetherJS with a {prefix: pageName, max: participants}
+    // Also with findRoom: "roomName" it will connect to the given room name
+    findRoom: null,
+    // If true, starts TogetherJS automatically (of course!)
+    autoStart: false,
+    // If true, then the "Join TogetherJS Session?" confirmation dialog
+    // won't come up
+    suppressJoinConfirmation: false,
+    // If true, then the "Invite a friend" window won't automatically come up
+    suppressInvite: false,
+    // A room in which to find people to invite to this session,
+    inviteFromRoom: null,
+    // This is used to keep sessions from crossing over on the same
+    // domain, if for some reason you want sessions that are limited
+    // to only a portion of the domain:
+    storagePrefix: "togetherjs",
+    // When true, we treat the entire URL, including the hash, as the identifier
+    // of the page; i.e., if you one person is on `http://example.com/#view1`
+    // and another person is at `http://example.com/#view2` then these two people
+    // are considered to be at completely different URLs
+    includeHashInUrl: false,
+    // When true, the WebRTC-based mic/chat will be disabled
+    disableWebRTC: false,
+    // When true, youTube videos will synchronize
+    youtube: true,
+    // Ignores the following console messages, disables all messages if set to true
+    ignoreMessages: ["cursor-update", "keydown", "scroll-update"],
+    // Ignores the following forms (will ignore all forms if set to true):
+    ignoreForms: [":password"],
+    fallbackLang: "en_US"
+  };
+
+  var styleSheet = "/togetherjs/togetherjs.css";
+
+  var baseUrl = "";
+  if (baseUrl == "__" + "baseUrl__") {
+    // Reset the variable if it doesn't get substituted
+    baseUrl = "";
+  }
+  // True if this file should use minimized sub-resources:
+  var min = "yes" == "__" + "min__" ? false : "yes" == "yes";
+
+  var baseUrlOverride = localStorage.getItem("togetherjs.baseUrlOverride");
+  if (baseUrlOverride) {
+    try {
+      baseUrlOverride = JSON.parse(baseUrlOverride);
+    } catch (e) {
+      baseUrlOverride = null;
+    }
+    if ((! baseUrlOverride) || baseUrlOverride.expiresAt < Date.now()) {
+      // Ignore because it has expired
+      localStorage.removeItem("togetherjs.baseUrlOverride");
+    } else {
+      baseUrl = baseUrlOverride.baseUrl;
+      var logger = console.warn || console.log;
+      logger.call(console, "Using TogetherJS baseUrlOverride:", baseUrl);
+      logger.call(console, "To undo run: localStorage.removeItem('togetherjs.baseUrlOverride')");
+    }
+  }
+
+  var configOverride = localStorage.getItem("togetherjs.configOverride");
+  if (configOverride) {
+    try {
+      configOverride = JSON.parse(configOverride);
+    } catch (e) {
+      configOverride = null;
+    }
+    if ((! configOverride) || configOverride.expiresAt < Date.now()) {
+      localStorage.removeItem("togetherjs.configOverride");
+    } else {
+      var shownAny = false;
+      for (var attr in configOverride) {
+        if (! configOverride.hasOwnProperty(attr)) {
+          continue;
+        }
+        if (attr == "expiresAt" || ! configOverride.hasOwnProperty(attr)) {
+          continue;
+        }
+        if (! shownAny) {
+          console.warn("Using TogetherJS configOverride");
+          console.warn("To undo run: localStorage.removeItem('togetherjs.configOverride')");
+        }
+        window["TogetherJSConfig_" + attr] = configOverride[attr];
+        console.log("Config override:", attr, "=", configOverride[attr]);
+      }
+    }
+  }
+
+  var version = "unknown";
+  // FIXME: we could/should use a version from the checkout, at least
+  // for production
+  var cacheBust = "";
+  if ((! cacheBust) || cacheBust == "") {
+    cacheBust = Date.now() + "";
+  } else {
+    version = cacheBust;
+  }
+
+  // Make sure we have all of the console.* methods:
+  if (typeof console == "undefined") {
+    console = {};
+  }
+  if (! console.log) {
+    console.log = function () {};
+  }
+  ["debug", "info", "warn", "error"].forEach(function (method) {
+    if (! console[method]) {
+      console[method] = console.log;
+    }
+  });
+
+  if (! baseUrl) {
+    var scripts = document.getElementsByTagName("script");
+    for (var i=0; i<scripts.length; i++) {
+      var src = scripts[i].src;
+      if (src && src.search(/togetherjs(-min)?.js(\?.*)?$/) !== -1) {
+        baseUrl = src.replace(/\/*togetherjs(-min)?.js(\?.*)?$/, "");
+        console.warn("Detected baseUrl as", baseUrl);
+        break;
+      } else if (src && src.search(/togetherjs-min.js(\?.*)?$/) !== -1) {
+        baseUrl = src.replace(/\/*togetherjs-min.js(\?.*)?$/, "");
+        console.warn("Detected baseUrl as", baseUrl);
+        break;
+      }
+    }
+  }
+  if (! baseUrl) {
+    console.warn("Could not determine TogetherJS's baseUrl (looked for a <script> with togetherjs.js and togetherjs-min.js)");
+  }
+
+  function addStyle() {
+    var existing = document.getElementById("togetherjs-stylesheet");
+    if (! existing) {
+      var link = document.createElement("link");
+      link.id = "togetherjs-stylesheet";
+      link.setAttribute("rel", "stylesheet");
+      link.href = baseUrl + styleSheet + "?bust=" + cacheBust;
+      document.head.appendChild(link);
+    }
+  }
+
+  function addScript(url) {
+    var script = document.createElement("script");
+    script.src = baseUrl + url + "?bust=" + cacheBust;
+    document.head.appendChild(script);
+  }
+
+  var TogetherJS = window.TogetherJS = function TogetherJS(event) {
+    if (TogetherJS.running) {
+      var session = TogetherJS.require("session");
+      session.close();
+      return;
+    }
+    TogetherJS.startup.button = null;
+    try {
+      if (event && typeof event == "object") {
+        if (event.target && typeof event) {
+          TogetherJS.startup.button = event.target;
+        } else if (event.nodeType == 1) {
+          TogetherJS.startup.button = event;
+        } else if (event[0] && event[0].nodeType == 1) {
+          // Probably a jQuery element
+          TogetherJS.startup.button = event[0];
+        }
+      }
+    } catch (e) {
+      console.warn("Error determining starting button:", e);
+    }
+    if (window.TowTruckConfig) {
+      console.warn("TowTruckConfig is deprecated; please use TogetherJSConfig");
+      if (window.TogetherJSConfig) {
+        console.warn("Ignoring TowTruckConfig in favor of TogetherJSConfig");
+      } else {
+        window.TogetherJSConfig = TowTruckConfig;
+      }
+    }
+    if (window.TogetherJSConfig && (! window.TogetherJSConfig.loaded)) {
+      TogetherJS.config(window.TogetherJSConfig);
+      window.TogetherJSConfig.loaded = true;
+    }
+
+    // This handles loading configuration from global variables.  This
+    // includes TogetherJSConfig_on_*, which are attributes folded into
+    // the "on" configuration value.
+    var attr;
+    var attrName;
+    var globalOns = {};
+    for (attr in window) {
+      if (attr.indexOf("TogetherJSConfig_on_") === 0) {
+        attrName = attr.substr(("TogetherJSConfig_on_").length);
+        globalOns[attrName] = window[attr];
+      } else if (attr.indexOf("TogetherJSConfig_") === 0) {
+        attrName = attr.substr(("TogetherJSConfig_").length);
+        TogetherJS.config(attrName, window[attr]);
+      } else if (attr.indexOf("TowTruckConfig_on_") === 0) {
+        attrName = attr.substr(("TowTruckConfig_on_").length);
+        console.warn("TowTruckConfig_* is deprecated, please rename", attr, "to TogetherJSConfig_on_" + attrName);
+        globalOns[attrName] = window[attr];
+      } else if (attr.indexOf("TowTruckConfig_") === 0) {
+        attrName = attr.substr(("TowTruckConfig_").length);
+        console.warn("TowTruckConfig_* is deprecated, please rename", attr, "to TogetherJSConfig_" + attrName);
+        TogetherJS.config(attrName, window[attr]);
+      }
+
+
+    }
+    // FIXME: copy existing config?
+    // FIXME: do this directly in TogetherJS.config() ?
+    // FIXME: close these configs?
+    var ons = TogetherJS.config.get("on");
+    for (attr in globalOns) {
+      if (globalOns.hasOwnProperty(attr)) {
+        // FIXME: should we avoid overwriting?  Maybe use arrays?
+        ons[attr] = globalOns[attr];
+      }
+    }
+    TogetherJS.config("on", ons);
+    for (attr in ons) {
+      TogetherJS.on(attr, ons[attr]);
+    }
+    var hubOns = TogetherJS.config.get("hub_on");
+    if (hubOns) {
+      for (attr in hubOns) {
+        if (hubOns.hasOwnProperty(attr)) {
+          TogetherJS.hub.on(attr, hubOns[attr]);
+        }
+      }
+    }
+
+    if (! TogetherJS.startup.reason) {
+      // Then a call to TogetherJS() from a button must be started TogetherJS
+      TogetherJS.startup.reason = "started";
+    }
+
+    // FIXME: maybe I should just test for TogetherJS.require:
+    if (TogetherJS._loaded) {
+      var session = TogetherJS.require("session");
+      addStyle();
+      session.start();
+      return;
+    }
+    // A sort of signal to session.js to tell it to actually
+    // start itself (i.e., put up a UI and try to activate)
+    TogetherJS.startup._launch = true;
+
+    addStyle();
+    var minSetting = TogetherJS.config.get("useMinimizedCode");
+    TogetherJS.config.close("useMinimizedCode");
+    if (minSetting !== undefined) {
+      min = !! minSetting;
+    }
+    var requireConfig = TogetherJS._extend(TogetherJS.requireConfig);
+    var deps = ["session", "jquery"];
+    var lang = TogetherJS.getConfig("lang");
+    // [igoryen]: We should generate this value in Gruntfile.js, based on the available translations
+    var availableTranslations = {
+      "en-US": true,
+      "ru": true,
+      "ru-RU": true
+    };
+
+    if(lang === undefined) {
+      var navigatorLang = navigator.language.replace(/_/g, "-");
+      if (!availableTranslations[navigatorLang]) {
+        lang = TogetherJS.config.get("fallbackLang");
+      } else {
+        lang = navigatorLang;
+      }
+     TogetherJS.config("lang", lang);
+    }
+
+    TogetherJS.config("lang", lang.replace(/_/g, "-")); // rename into TogetherJS.config.get()?
+    var localeTemplates = "templates-" + lang;// rename into TogetherJS.config.get()?
+    deps.splice(0, 0, localeTemplates);
+    function callback(session, jquery) {
+      TogetherJS._loaded = true;
+      if (! min) {
+        TogetherJS.require = require.config({context: "togetherjs"});
+        TogetherJS._requireObject = require;
+      }
+    }
+    if (! min) {
+      if (typeof require == "function") {
+        if (! require.config) {
+          console.warn("The global require (", require, ") is not requirejs; please use togetherjs-min.js");
+          throw new Error("Conflict with window.require");
+        }
+        TogetherJS.require = require.config(requireConfig);
+      }
+    }
+    if (typeof TogetherJS.require == "function") {
+      // This is an already-configured version of require
+      TogetherJS.require(deps, callback);
+    } else {
+      requireConfig.deps = deps;
+      requireConfig.callback = callback;
+      if (! min) {
+        window.require = requireConfig;
+      }
+    }
+    if (min) {
+      addScript("/togetherjs/togetherjsPackage.js");
+    } else {
+      addScript("/togetherjs/libs/require.js");
+    }
+  };
+
+  TogetherJS.pageLoaded = Date.now();
+
+  TogetherJS._extend = function (base, extensions) {
+    if (! extensions) {
+      extensions = base;
+      base = {};
+    }
+    for (var a in extensions) {
+      if (extensions.hasOwnProperty(a)) {
+        base[a] = extensions[a];
+      }
+    }
+    return base;
+  };
+
+  TogetherJS._startupInit = {
+    // What element, if any, was used to start the session:
+    button: null,
+    // The startReason is the reason TogetherJS was started.  One of:
+    //   null: not started
+    //   started: hit the start button (first page view)
+    //   joined: joined the session (first page view)
+    reason: null,
+    // Also, the session may have started on "this" page, or maybe is continued
+    // from a past page.  TogetherJS.continued indicates the difference (false the
+    // first time TogetherJS is started or joined, true on later page loads).
+    continued: false,
+    // This is set to tell the session what shareId to use, if the boot
+    // code knows (mostly because the URL indicates the id).
+    _joinShareId: null,
+    // This tells session to start up immediately (otherwise it would wait
+    // for session.start() to be run)
+    _launch: false
+  };
+  TogetherJS.startup = TogetherJS._extend(TogetherJS._startupInit);
+  TogetherJS.running = false;
+
+  TogetherJS.requireConfig = {
+    context: "togetherjs",
+    baseUrl: baseUrl + "/togetherjs",
+    urlArgs: "bust=" + cacheBust,
+    paths: {
+      jquery: "libs/jquery-1.8.3.min",
+      walkabout: "libs/walkabout/walkabout",
+      esprima: "libs/walkabout/lib/esprima",
+      falafel: "libs/walkabout/lib/falafel",
+      tinycolor: "libs/tinycolor",
+      whrandom: "libs/whrandom/random"
+    }
+  };
+
+  TogetherJS._mixinEvents = function (proto) {
+    proto.on = function on(name, callback) {
+      if (typeof callback != "function") {
+        console.warn("Bad callback for", this, ".once(", name, ", ", callback, ")");
+        throw "Error: .once() called with non-callback";
+      }
+      if (name.search(" ") != -1) {
+        var names = name.split(/ +/g);
+        names.forEach(function (n) {
+          this.on(n, callback);
+        }, this);
+        return;
+      }
+      if (this._knownEvents && this._knownEvents.indexOf(name) == -1) {
+        var thisString = "" + this;
+        if (thisString.length > 20) {
+          thisString = thisString.substr(0, 20) + "...";
+        }
+        console.warn(thisString + ".on('" + name + "', ...): unknown event");
+        if (console.trace) {
+          console.trace();
+        }
+      }
+      if (! this._listeners) {
+        this._listeners = {};
+      }
+      if (! this._listeners[name]) {
+        this._listeners[name] = [];
+      }
+      if (this._listeners[name].indexOf(callback) == -1) {
+        this._listeners[name].push(callback);
+      }
+    };
+    proto.once = function once(name, callback) {
+      if (typeof callback != "function") {
+        console.warn("Bad callback for", this, ".once(", name, ", ", callback, ")");
+        throw "Error: .once() called with non-callback";
+      }
+      var attr = "onceCallback_" + name;
+      // FIXME: maybe I should add the event name to the .once attribute:
+      if (! callback[attr]) {
+        callback[attr] = function onceCallback() {
+          callback.apply(this, arguments);
+          this.off(name, onceCallback);
+          delete callback[attr];
+        };
+      }
+      this.on(name, callback[attr]);
+    };
+    proto.off = proto.removeListener = function off(name, callback) {
+      if (this._listenerOffs) {
+        // Defer the .off() call until the .emit() is done.
+        this._listenerOffs.push([name, callback]);
+        return;
+      }
+      if (name.search(" ") != -1) {
+        var names = name.split(/ +/g);
+        names.forEach(function (n) {
+          this.off(n, callback);
+        }, this);
+        return;
+      }
+      if ((! this._listeners) || ! this._listeners[name]) {
+        return;
+      }
+      var l = this._listeners[name], _len = l.length;
+      for (var i=0; i<_len; i++) {
+        if (l[i] == callback) {
+          l.splice(i, 1);
+          break;
+        }
+      }
+    };
+    proto.emit = function emit(name) {
+      var offs = this._listenerOffs = [];
+      if ((! this._listeners) || ! this._listeners[name]) {
+        return;
+      }
+      var args = Array.prototype.slice.call(arguments, 1);
+      var l = this._listeners[name];
+      l.forEach(function (callback) {
+
+        callback.apply(this, args);
+      }, this);
+      delete this._listenerOffs;
+      if (offs.length) {
+        offs.forEach(function (item) {
+          this.off(item[0], item[1]);
+        }, this);
+      }
+
+    };
+    return proto;
+  };
+
+  /* This finalizes the unloading of TogetherJS, including unloading modules */
+  TogetherJS._teardown = function () {
+    var requireObject = TogetherJS._requireObject || window.require;
+    // FIXME: this doesn't clear the context for min-case
+    if (requireObject.s && requireObject.s.contexts) {
+      delete requireObject.s.contexts.togetherjs;
+    }
+    TogetherJS._loaded = false;
+    TogetherJS.startup = TogetherJS._extend(TogetherJS._startupInit);
+    TogetherJS.running = false;
+  };
+
+  TogetherJS._mixinEvents(TogetherJS);
+  TogetherJS._knownEvents = ["ready", "close"];
+  TogetherJS.toString = function () {
+    return "TogetherJS";
+  };
+
+  var defaultHubBase = "https://hub.togetherjs.com";
+  if (defaultHubBase == "__" + "hubUrl"+ "__") {
+    // Substitution wasn't made
+    defaultHubBase = "https://hub.togetherjs.mozillalabs.com";
+  }
+  defaultConfiguration.hubBase = defaultHubBase;
+
+  TogetherJS._configuration = {};
+  TogetherJS._defaultConfiguration = {
+    // Disables clicks for a certain element.
+    // (e.g., 'canvas' would not show clicks on canvas elements.)
+    // Setting this to true will disable clicks globally.
+    dontShowClicks: false,
+    // Experimental feature to echo clicks to certain elements across clients:
+    cloneClicks: false,
+    // Enable Mozilla or Google analytics on the page when TogetherJS is activated:
+    // FIXME: these don't seem to be working, and probably should be removed in favor
+    // of the hub analytics
+    enableAnalytics: false,
+    // The code to enable (this is defaulting to a Mozilla code):
+    analyticsCode: "UA-35433268-28",
+    // The base URL of the hub
+    hubBase: defaultHubBase,
+    // A function that will return the name of the user:
+    getUserName: null,
+    // A function that will return the color of the user:
+    getUserColor: null,
+    // A function that will return the avatar of the user:
+    getUserAvatar: null,
+    // The siteName is used in the walkthrough (defaults to document.title):
+    siteName: null,
+    // Whether to use the minimized version of the code (overriding the built setting)
+    useMinimizedCode: undefined,
+    // Any events to bind to
+    on: {},
+    // Hub events to bind to
+    hub_on: {},
+    // Enables the alt-T alt-T TogetherJS shortcut; however, this setting
+    // must be enabled early as TogetherJSConfig_enableShortcut = true;
+    enableShortcut: false,
+    // The name of this tool as provided to users.  The UI is updated to use this.
+    // Because of how it is used in text it should be a proper noun, e.g.,
+    // "MySite's Collaboration Tool"
+    toolName: null,
+    // Used to auto-start TogetherJS with a {prefix: pageName, max: participants}
+    // Also with findRoom: "roomName" it will connect to the given room name
+    findRoom: null,
+    // If true, starts TogetherJS automatically (of course!)
+    autoStart: false,
+    // If true, then the "Join TogetherJS Session?" confirmation dialog
+    // won't come up
+    suppressJoinConfirmation: false,
+    // If true, then the "Invite a friend" window won't automatically come up
+    suppressInvite: false,
+    // A room in which to find people to invite to this session,
+    inviteFromRoom: null,
+    // This is used to keep sessions from crossing over on the same
+    // domain, if for some reason you want sessions that are limited
+    // to only a portion of the domain:
+    storagePrefix: "togetherjs",
+    // When true, we treat the entire URL, including the hash, as the identifier
+    // of the page; i.e., if you one person is on `http://example.com/#view1`
+    // and another person is at `http://example.com/#view2` then these two people
+    // are considered to be at completely different URLs
+    includeHashInUrl: false,
+    // The language to present the tool in, such as "en-US" or "ru-RU"
+    // Note this must be set as TogetherJSConfig_lang, as it effects the loader
+    // and must be set as soon as this file is included
+    lang: null
+  };
+  // FIXME: there's a point at which configuration can't be updated
+  // (e.g., hubBase after the TogetherJS has loaded).  We should keep
+  // track of these and signal an error if someone attempts to
+  // reconfigure too late
+
+  TogetherJS.getConfig = function (name) { // rename into TogetherJS.config.get()?
+    var value = TogetherJS._configuration[name];
+    if (value === undefined) {
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+        console.error("Tried to load unknown configuration value:", name);
+      }
+      value = TogetherJS._defaultConfiguration[name];
+    }
+    return value;
+  };
+  TogetherJS._defaultConfiguration = defaultConfiguration;
+  TogetherJS._configTrackers = {};
+  TogetherJS._configClosed = {};
+
+  /* TogetherJS.config(configurationObject)
+     or: TogetherJS.config(configName, value)
+
+     Adds configuration to TogetherJS.  You may also set the global variable TogetherJSConfig
+     and when TogetherJS is started that configuration will be loaded.
+
+     Unknown configuration values will lead to console error messages.
+     */
+  TogetherJS.config = function (name, maybeValue) {
+    var settings;
+    if (arguments.length == 1) {
+      if (typeof name != "object") {
+        throw new Error('TogetherJS.config(value) must have an object value (not: ' + name + ')');
+      }
+      settings = name;
+    } else {
+      settings = {};
+      settings[name] = maybeValue;
+    }
+    var i;
+    var tracker;
+    for (var attr in settings) {
+      if (settings.hasOwnProperty(attr)) {
+        if (TogetherJS._configClosed[attr] && TogetherJS.running) {
+          throw new Error("The configuration " + attr + " is finalized and cannot be changed");
+        }
+      }
+    }
+    for (var attr in settings) {
+      if (! settings.hasOwnProperty(attr)) {
+        continue;
+      }
+      if (attr == "loaded" || attr == "callToStart") {
+        continue;
+      }
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(attr)) {
+        console.warn("Unknown configuration value passed to TogetherJS.config():", attr);
+      }
+      var previous = TogetherJS._configuration[attr];
+      var value = settings[attr];
+      TogetherJS._configuration[attr] = value;
+      var trackers = TogetherJS._configTrackers[name] || [];
+      var failed = false;
+      for (i=0; i<trackers.length; i++) {
+        try {
+          tracker = trackers[i];
+          tracker(value, previous);
+        } catch (e) {
+          console.warn("Error setting configuration", name, "to", value,
+                       ":", e, "; reverting to", previous);
+          failed = true;
+          break;
+        }
+      }
+      if (failed) {
+        TogetherJS._configuration[attr] = previous;
+        for (i=0; i<trackers.length; i++) {
+          try {
+            tracker = trackers[i];
+            tracker(value);
+          } catch (e) {
+            console.warn("Error REsetting configuration", name, "to", previous,
+                         ":", e, "(ignoring)");
+          }
+        }
+      }
+    }
+  };
+
+  TogetherJS.config.get = function (name) {
+    var value = TogetherJS._configuration[name];
+    if (value === undefined) {
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+        console.error("Tried to load unknown configuration value:", name);
+      }
+      value = TogetherJS._defaultConfiguration[name];
+    }
+    return value;
+  };
+
+  TogetherJS.config.track = function (name, callback) {
+    if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+      throw new Error("Configuration is unknown: " + name);
+    }
+    callback(TogetherJS.config.get(name));
+    if (! TogetherJS._configTrackers[name]) {
+      TogetherJS._configTrackers[name] = [];
+    }
+    TogetherJS._configTrackers[name].push(callback);
+    return callback;
+  };
+
+  TogetherJS.config.close = function (name) {
+    if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+      throw new Error("Configuration is unknown: " + name);
+    }
+    TogetherJS._configClosed[name] = true;
+  };
+
+  TogetherJS.reinitialize = function () {
+    if (TogetherJS.running && typeof TogetherJS.require == "function") {
+      TogetherJS.require(["session"], function (session) {
+        session.emit("reinitialize");
+      });
+    }
+    // If it's not set, TogetherJS has not been loaded, and reinitialization is not needed
+  };
+
+  TogetherJS.refreshUserData = function () {
+    if (TogetherJS.running && typeof TogetherJS.require ==  "function") {
+      TogetherJS.require(["session"], function (session) {
+        session.emit("refresh-user-data");
+      });
+    }
+  };
+
+  // This should contain the output of "git describe --always --dirty"
+  // FIXME: substitute this on the server (and update make-static-client)
+  TogetherJS.version = version;
+  TogetherJS.baseUrl = baseUrl;
+
+  TogetherJS.hub = TogetherJS._mixinEvents({});
+
+  TogetherJS._onmessage = function (msg) {
+    var type = msg.type;
+    if (type.search(/^app\./) === 0) {
+      type = type.substr("app.".length);
+    } else {
+      type = "togetherjs." + type;
+    }
+    msg.type = type;
+    TogetherJS.hub.emit(msg.type, msg);
+  };
+
+  TogetherJS.send = function (msg) {
+    if (! TogetherJS.require) {
+      throw "You cannot use TogetherJS.send() when TogetherJS is not running";
+    }
+    var session = TogetherJS.require("session");
+    session.appSend(msg);
+  };
+
+  TogetherJS.shareUrl = function () {
+    if (! TogetherJS.require) {
+      return null;
+    }
+    var session = TogetherJS.require("session");
+    return session.shareUrl();
+  };
+
+  // pgbovine - added
+  TogetherJS.shareId = function () {
+    if (! TogetherJS.require) {
+      return null;
+    }
+    var session = TogetherJS.require("session");
+    assert(session.shareId, "Attempted to access shareId before it is set");
+    return session.shareId;
+  };
+
+  var listener = null;
+
+  TogetherJS.listenForShortcut = function () {
+    console.warn("Listening for alt-T alt-T to start TogetherJS");
+    TogetherJS.removeShortcut();
+    listener = function listener(event) {
+      if (event.which == 84 && event.altKey) {
+        if (listener.pressed) {
+          // Second hit
+          TogetherJS();
+        } else {
+          listener.pressed = true;
+        }
+      } else {
+        listener.pressed = false;
+      }
+    };
+    TogetherJS.once("ready", TogetherJS.removeShortcut);
+    document.addEventListener("keyup", listener, false);
+  };
+
+  TogetherJS.removeShortcut = function () {
+    if (listener) {
+      document.addEventListener("keyup", listener, false);
+      listener = null;
+    }
+  };
+
+  TogetherJS.config.track("enableShortcut", function (enable, previous) {
+    if (enable) {
+      TogetherJS.listenForShortcut();
+    } else if (previous) {
+      TogetherJS.removeShortcut();
+    }
+  });
+
+  TogetherJS.checkForUsersOnChannel = function (address, callback) {
+    if (address.search(/^https?:/i) === 0) {
+      address = address.replace(/^http/i, 'ws');
+    }
+    var socket = new WebSocket(address);
+    var gotAnswer = false;
+    socket.onmessage = function (event) {
+      var msg = JSON.parse(event.data);
+      if (msg.type != "init-connection") {
+        console.warn("Got unexpected first message (should be init-connection):", msg);
+        return;
+      }
+      if (gotAnswer) {
+        console.warn("Somehow received two responses from channel; ignoring second");
+        socket.close();
+        return;
+      }
+      gotAnswer = true;
+      socket.close();
+      callback(msg.peerCount);
+    };
+    socket.onclose = socket.onerror = function () {
+      if (! gotAnswer) {
+        console.warn("Socket was closed without receiving answer");
+        gotAnswer = true;
+        callback(undefined);
+      }
+    };
+  };
+
+  // It's nice to replace this early, before the load event fires, so we conflict
+  // as little as possible with the app we are embedded in:
+  var hash = location.hash.replace(/^#/, "");
+  var m = /&?togetherjs=([^&]*)/.exec(hash);
+  if (m) {
+    TogetherJS.startup._joinShareId = m[1];
+    TogetherJS.startup.reason = "joined";
+    var newHash = hash.substr(0, m.index) + hash.substr(m.index + m[0].length);
+    location.hash = newHash;
+  }
+  if (window._TogetherJSShareId) {
+    // A weird hack for something the addon does, to force a shareId.
+    // FIXME: probably should remove, it's a wonky feature.
+    TogetherJS.startup._joinShareId = window._TogetherJSShareId;
+    delete window._TogetherJSShareId;
+  }
+
+  function conditionalActivate() {
+    if (window.TogetherJSConfig_noAutoStart) {
+      return;
+    }
+    // A page can define this function to defer TogetherJS from starting
+    var callToStart = window.TogetherJSConfig_callToStart;
+    if (! callToStart && window.TowTruckConfig_callToStart) {
+      callToStart = window.TowTruckConfig_callToStart;
+      console.warn("Please rename TowTruckConfig_callToStart to TogetherJSConfig_callToStart");
+    }
+    if (window.TogetherJSConfig && window.TogetherJSConfig.callToStart) {
+      callToStart = window.TogetherJSConfig.callToStart;
+    }
+    if (callToStart) {
+      // FIXME: need to document this:
+      callToStart(onload);
+    } else {
+      onload();
+    }
+  }
+
+  // FIXME: can we push this up before the load event?
+  // Do we need to wait at all?
+  function onload() {
+    if (TogetherJS.startup._joinShareId) {
+      TogetherJS();
+    } else if (window._TogetherJSBookmarklet) {
+      delete window._TogetherJSBookmarklet;
+      TogetherJS();
+    } else {
+      // FIXME: this doesn't respect storagePrefix:
+      var key = "togetherjs-session.status";
+      var value = sessionStorage.getItem(key);
+      if (value) {
+        value = JSON.parse(value);
+        if (value && value.running) {
+          TogetherJS.startup.continued = true;
+          TogetherJS.startup.reason = value.startupReason;
+          TogetherJS();
+        }
+      } else if (window.TogetherJSConfig_autoStart ||
+                 (window.TogetherJSConfig && window.TogetherJSConfig.autoStart)) {
+        TogetherJS.startup.reason = "joined";
+        TogetherJS();
+      }
+    }
+  }
+
+  conditionalActivate();
+
+  // FIXME: wait until load event to double check if this gets set?
+  if (window.TogetherJSConfig_enableShortcut) {
+    TogetherJS.listenForShortcut();
+  }
+
+  // For compatibility:
+  window.TowTruck = TogetherJS;
+
+})();
diff --git a/v3/js/togetherjs/togetherjs.js b/v3/js/togetherjs/togetherjs.js
new file mode 100644
index 000000000..930951801
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs.js
@@ -0,0 +1,905 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*jshint scripturl:true */
+(function () {
+
+  var defaultConfiguration = {
+    // Disables clicks for a certain element.
+    // (e.g., 'canvas' would not show clicks on canvas elements.)
+    // Setting this to true will disable clicks globally.
+    dontShowClicks: false,
+    // Experimental feature to echo clicks to certain elements across clients:
+    cloneClicks: false,
+    // Enable Mozilla or Google analytics on the page when TogetherJS is activated:
+    // FIXME: these don't seem to be working, and probably should be removed in favor
+    // of the hub analytics
+    enableAnalytics: false,
+    // The code to enable (this is defaulting to a Mozilla code):
+    analyticsCode: "UA-35433268-28",
+    // The base URL of the hub (gets filled in below):
+    hubBase: null,
+    // A function that will return the name of the user:
+    getUserName: null,
+    // A function that will return the color of the user:
+    getUserColor: null,
+    // A function that will return the avatar of the user:
+    getUserAvatar: null,
+    // The siteName is used in the walkthrough (defaults to document.title):
+    siteName: null,
+    // Whether to use the minimized version of the code (overriding the built setting)
+    useMinimizedCode: undefined,
+    // Any events to bind to
+    on: {},
+    // Hub events to bind to
+    hub_on: {},
+    // Enables the alt-T alt-T TogetherJS shortcut; however, this setting
+    // must be enabled early as TogetherJSConfig_enableShortcut = true;
+    enableShortcut: false,
+    // The name of this tool as provided to users.  The UI is updated to use this.
+    // Because of how it is used in text it should be a proper noun, e.g.,
+    // "MySite's Collaboration Tool"
+    toolName: null,
+    // Used to auto-start TogetherJS with a {prefix: pageName, max: participants}
+    // Also with findRoom: "roomName" it will connect to the given room name
+    findRoom: null,
+    // If true, starts TogetherJS automatically (of course!)
+    autoStart: false,
+    // If true, then the "Join TogetherJS Session?" confirmation dialog
+    // won't come up
+    suppressJoinConfirmation: false,
+    // If true, then the "Invite a friend" window won't automatically come up
+    suppressInvite: false,
+    // A room in which to find people to invite to this session,
+    inviteFromRoom: null,
+    // This is used to keep sessions from crossing over on the same
+    // domain, if for some reason you want sessions that are limited
+    // to only a portion of the domain:
+    storagePrefix: "togetherjs",
+    // When true, we treat the entire URL, including the hash, as the identifier
+    // of the page; i.e., if you one person is on `http://example.com/#view1`
+    // and another person is at `http://example.com/#view2` then these two people
+    // are considered to be at completely different URLs
+    includeHashInUrl: false,
+    // When true, the WebRTC-based mic/chat will be disabled
+    disableWebRTC: false,
+    // When true, youTube videos will synchronize
+    youtube: true,
+    // Ignores the following console messages, disables all messages if set to true
+    ignoreMessages: ["cursor-update", "keydown", "scroll-update"],
+    // Ignores the following forms (will ignore all forms if set to true):
+    ignoreForms: [":password"],
+    fallbackLang: "en_US"
+  };
+
+  var styleSheet = "/togetherjs/togetherjs.css";
+
+  var baseUrl = "";
+  if (baseUrl == "__" + "baseUrl__") {
+    // Reset the variable if it doesn't get substituted
+    baseUrl = "";
+  }
+  // True if this file should use minimized sub-resources:
+  var min = "no" == "__" + "min__" ? false : "no" == "yes";
+
+  var baseUrlOverride = localStorage.getItem("togetherjs.baseUrlOverride");
+  if (baseUrlOverride) {
+    try {
+      baseUrlOverride = JSON.parse(baseUrlOverride);
+    } catch (e) {
+      baseUrlOverride = null;
+    }
+    if ((! baseUrlOverride) || baseUrlOverride.expiresAt < Date.now()) {
+      // Ignore because it has expired
+      localStorage.removeItem("togetherjs.baseUrlOverride");
+    } else {
+      baseUrl = baseUrlOverride.baseUrl;
+      var logger = console.warn || console.log;
+      logger.call(console, "Using TogetherJS baseUrlOverride:", baseUrl);
+      logger.call(console, "To undo run: localStorage.removeItem('togetherjs.baseUrlOverride')");
+    }
+  }
+
+  var configOverride = localStorage.getItem("togetherjs.configOverride");
+  if (configOverride) {
+    try {
+      configOverride = JSON.parse(configOverride);
+    } catch (e) {
+      configOverride = null;
+    }
+    if ((! configOverride) || configOverride.expiresAt < Date.now()) {
+      localStorage.removeItem("togetherjs.configOverride");
+    } else {
+      var shownAny = false;
+      for (var attr in configOverride) {
+        if (! configOverride.hasOwnProperty(attr)) {
+          continue;
+        }
+        if (attr == "expiresAt" || ! configOverride.hasOwnProperty(attr)) {
+          continue;
+        }
+        if (! shownAny) {
+          console.warn("Using TogetherJS configOverride");
+          console.warn("To undo run: localStorage.removeItem('togetherjs.configOverride')");
+        }
+        window["TogetherJSConfig_" + attr] = configOverride[attr];
+        console.log("Config override:", attr, "=", configOverride[attr]);
+      }
+    }
+  }
+
+  var version = "unknown";
+  // FIXME: we could/should use a version from the checkout, at least
+  // for production
+  var cacheBust = "";
+  if ((! cacheBust) || cacheBust == "") {
+    cacheBust = Date.now() + "";
+  } else {
+    version = cacheBust;
+  }
+
+  // Make sure we have all of the console.* methods:
+  if (typeof console == "undefined") {
+    console = {};
+  }
+  if (! console.log) {
+    console.log = function () {};
+  }
+  ["debug", "info", "warn", "error"].forEach(function (method) {
+    if (! console[method]) {
+      console[method] = console.log;
+    }
+  });
+
+  if (! baseUrl) {
+    var scripts = document.getElementsByTagName("script");
+    for (var i=0; i<scripts.length; i++) {
+      var src = scripts[i].src;
+      if (src && src.search(/togetherjs(-min)?.js(\?.*)?$/) !== -1) {
+        baseUrl = src.replace(/\/*togetherjs(-min)?.js(\?.*)?$/, "");
+        console.warn("Detected baseUrl as", baseUrl);
+        break;
+      } else if (src && src.search(/togetherjs-min.js(\?.*)?$/) !== -1) {
+        baseUrl = src.replace(/\/*togetherjs-min.js(\?.*)?$/, "");
+        console.warn("Detected baseUrl as", baseUrl);
+        break;
+      }
+    }
+  }
+  if (! baseUrl) {
+    console.warn("Could not determine TogetherJS's baseUrl (looked for a <script> with togetherjs.js and togetherjs-min.js)");
+  }
+
+  function addStyle() {
+    var existing = document.getElementById("togetherjs-stylesheet");
+    if (! existing) {
+      var link = document.createElement("link");
+      link.id = "togetherjs-stylesheet";
+      link.setAttribute("rel", "stylesheet");
+      link.href = baseUrl + styleSheet + "?bust=" + cacheBust;
+      document.head.appendChild(link);
+    }
+  }
+
+  function addScript(url) {
+    var script = document.createElement("script");
+    script.src = baseUrl + url + "?bust=" + cacheBust;
+    document.head.appendChild(script);
+  }
+
+  var TogetherJS = window.TogetherJS = function TogetherJS(event) {
+    if (TogetherJS.running) {
+      var session = TogetherJS.require("session");
+      session.close();
+      return;
+    }
+    TogetherJS.startup.button = null;
+    try {
+      if (event && typeof event == "object") {
+        if (event.target && typeof event) {
+          TogetherJS.startup.button = event.target;
+        } else if (event.nodeType == 1) {
+          TogetherJS.startup.button = event;
+        } else if (event[0] && event[0].nodeType == 1) {
+          // Probably a jQuery element
+          TogetherJS.startup.button = event[0];
+        }
+      }
+    } catch (e) {
+      console.warn("Error determining starting button:", e);
+    }
+    if (window.TowTruckConfig) {
+      console.warn("TowTruckConfig is deprecated; please use TogetherJSConfig");
+      if (window.TogetherJSConfig) {
+        console.warn("Ignoring TowTruckConfig in favor of TogetherJSConfig");
+      } else {
+        window.TogetherJSConfig = TowTruckConfig;
+      }
+    }
+    if (window.TogetherJSConfig && (! window.TogetherJSConfig.loaded)) {
+      TogetherJS.config(window.TogetherJSConfig);
+      window.TogetherJSConfig.loaded = true;
+    }
+
+    // This handles loading configuration from global variables.  This
+    // includes TogetherJSConfig_on_*, which are attributes folded into
+    // the "on" configuration value.
+    var attr;
+    var attrName;
+    var globalOns = {};
+    for (attr in window) {
+      if (attr.indexOf("TogetherJSConfig_on_") === 0) {
+        attrName = attr.substr(("TogetherJSConfig_on_").length);
+        globalOns[attrName] = window[attr];
+      } else if (attr.indexOf("TogetherJSConfig_") === 0) {
+        attrName = attr.substr(("TogetherJSConfig_").length);
+        TogetherJS.config(attrName, window[attr]);
+      } else if (attr.indexOf("TowTruckConfig_on_") === 0) {
+        attrName = attr.substr(("TowTruckConfig_on_").length);
+        console.warn("TowTruckConfig_* is deprecated, please rename", attr, "to TogetherJSConfig_on_" + attrName);
+        globalOns[attrName] = window[attr];
+      } else if (attr.indexOf("TowTruckConfig_") === 0) {
+        attrName = attr.substr(("TowTruckConfig_").length);
+        console.warn("TowTruckConfig_* is deprecated, please rename", attr, "to TogetherJSConfig_" + attrName);
+        TogetherJS.config(attrName, window[attr]);
+      }
+
+
+    }
+    // FIXME: copy existing config?
+    // FIXME: do this directly in TogetherJS.config() ?
+    // FIXME: close these configs?
+    var ons = TogetherJS.config.get("on");
+    for (attr in globalOns) {
+      if (globalOns.hasOwnProperty(attr)) {
+        // FIXME: should we avoid overwriting?  Maybe use arrays?
+        ons[attr] = globalOns[attr];
+      }
+    }
+    TogetherJS.config("on", ons);
+    for (attr in ons) {
+      TogetherJS.on(attr, ons[attr]);
+    }
+    var hubOns = TogetherJS.config.get("hub_on");
+    if (hubOns) {
+      for (attr in hubOns) {
+        if (hubOns.hasOwnProperty(attr)) {
+          TogetherJS.hub.on(attr, hubOns[attr]);
+        }
+      }
+    }
+
+    if (! TogetherJS.startup.reason) {
+      // Then a call to TogetherJS() from a button must be started TogetherJS
+      TogetherJS.startup.reason = "started";
+    }
+
+    // FIXME: maybe I should just test for TogetherJS.require:
+    if (TogetherJS._loaded) {
+      var session = TogetherJS.require("session");
+      addStyle();
+      session.start();
+      return;
+    }
+    // A sort of signal to session.js to tell it to actually
+    // start itself (i.e., put up a UI and try to activate)
+    TogetherJS.startup._launch = true;
+
+    addStyle();
+    var minSetting = TogetherJS.config.get("useMinimizedCode");
+    TogetherJS.config.close("useMinimizedCode");
+    if (minSetting !== undefined) {
+      min = !! minSetting;
+    }
+    var requireConfig = TogetherJS._extend(TogetherJS.requireConfig);
+    var deps = ["session", "jquery"];
+    var lang = TogetherJS.getConfig("lang");
+    // [igoryen]: We should generate this value in Gruntfile.js, based on the available translations
+    var availableTranslations = {
+      "en-US": true,
+      "ru": true,
+      "ru-RU": true
+    };
+
+    if(lang === undefined) {
+      var navigatorLang = navigator.language.replace(/_/g, "-");
+      if (!availableTranslations[navigatorLang]) {
+        lang = TogetherJS.config.get("fallbackLang");
+      } else {
+        lang = navigatorLang;
+      }
+     TogetherJS.config("lang", lang);
+    }
+
+    TogetherJS.config("lang", lang.replace(/_/g, "-")); // rename into TogetherJS.config.get()?
+    var localeTemplates = "templates-" + lang;// rename into TogetherJS.config.get()?
+    deps.splice(0, 0, localeTemplates);
+    function callback(session, jquery) {
+      TogetherJS._loaded = true;
+      if (! min) {
+        TogetherJS.require = require.config({context: "togetherjs"});
+        TogetherJS._requireObject = require;
+      }
+    }
+    if (! min) {
+      if (typeof require == "function") {
+        if (! require.config) {
+          console.warn("The global require (", require, ") is not requirejs; please use togetherjs-min.js");
+          throw new Error("Conflict with window.require");
+        }
+        TogetherJS.require = require.config(requireConfig);
+      }
+    }
+    if (typeof TogetherJS.require == "function") {
+      // This is an already-configured version of require
+      TogetherJS.require(deps, callback);
+    } else {
+      requireConfig.deps = deps;
+      requireConfig.callback = callback;
+      if (! min) {
+        window.require = requireConfig;
+      }
+    }
+    if (min) {
+      addScript("/togetherjs/togetherjsPackage.js");
+    } else {
+      addScript("/togetherjs/libs/require.js");
+    }
+  };
+
+  TogetherJS.pageLoaded = Date.now();
+
+  TogetherJS._extend = function (base, extensions) {
+    if (! extensions) {
+      extensions = base;
+      base = {};
+    }
+    for (var a in extensions) {
+      if (extensions.hasOwnProperty(a)) {
+        base[a] = extensions[a];
+      }
+    }
+    return base;
+  };
+
+  TogetherJS._startupInit = {
+    // What element, if any, was used to start the session:
+    button: null,
+    // The startReason is the reason TogetherJS was started.  One of:
+    //   null: not started
+    //   started: hit the start button (first page view)
+    //   joined: joined the session (first page view)
+    reason: null,
+    // Also, the session may have started on "this" page, or maybe is continued
+    // from a past page.  TogetherJS.continued indicates the difference (false the
+    // first time TogetherJS is started or joined, true on later page loads).
+    continued: false,
+    // This is set to tell the session what shareId to use, if the boot
+    // code knows (mostly because the URL indicates the id).
+    _joinShareId: null,
+    // This tells session to start up immediately (otherwise it would wait
+    // for session.start() to be run)
+    _launch: false
+  };
+  TogetherJS.startup = TogetherJS._extend(TogetherJS._startupInit);
+  TogetherJS.running = false;
+
+  TogetherJS.requireConfig = {
+    context: "togetherjs",
+    baseUrl: baseUrl + "/togetherjs",
+    urlArgs: "bust=" + cacheBust,
+    paths: {
+      jquery: "libs/jquery-1.8.3.min",
+      walkabout: "libs/walkabout/walkabout",
+      esprima: "libs/walkabout/lib/esprima",
+      falafel: "libs/walkabout/lib/falafel",
+      tinycolor: "libs/tinycolor",
+      whrandom: "libs/whrandom/random"
+    }
+  };
+
+  TogetherJS._mixinEvents = function (proto) {
+    proto.on = function on(name, callback) {
+      if (typeof callback != "function") {
+        console.warn("Bad callback for", this, ".once(", name, ", ", callback, ")");
+        throw "Error: .once() called with non-callback";
+      }
+      if (name.search(" ") != -1) {
+        var names = name.split(/ +/g);
+        names.forEach(function (n) {
+          this.on(n, callback);
+        }, this);
+        return;
+      }
+      if (this._knownEvents && this._knownEvents.indexOf(name) == -1) {
+        var thisString = "" + this;
+        if (thisString.length > 20) {
+          thisString = thisString.substr(0, 20) + "...";
+        }
+        console.warn(thisString + ".on('" + name + "', ...): unknown event");
+        if (console.trace) {
+          console.trace();
+        }
+      }
+      if (! this._listeners) {
+        this._listeners = {};
+      }
+      if (! this._listeners[name]) {
+        this._listeners[name] = [];
+      }
+      if (this._listeners[name].indexOf(callback) == -1) {
+        this._listeners[name].push(callback);
+      }
+    };
+    proto.once = function once(name, callback) {
+      if (typeof callback != "function") {
+        console.warn("Bad callback for", this, ".once(", name, ", ", callback, ")");
+        throw "Error: .once() called with non-callback";
+      }
+      var attr = "onceCallback_" + name;
+      // FIXME: maybe I should add the event name to the .once attribute:
+      if (! callback[attr]) {
+        callback[attr] = function onceCallback() {
+          callback.apply(this, arguments);
+          this.off(name, onceCallback);
+          delete callback[attr];
+        };
+      }
+      this.on(name, callback[attr]);
+    };
+    proto.off = proto.removeListener = function off(name, callback) {
+      if (this._listenerOffs) {
+        // Defer the .off() call until the .emit() is done.
+        this._listenerOffs.push([name, callback]);
+        return;
+      }
+      if (name.search(" ") != -1) {
+        var names = name.split(/ +/g);
+        names.forEach(function (n) {
+          this.off(n, callback);
+        }, this);
+        return;
+      }
+      if ((! this._listeners) || ! this._listeners[name]) {
+        return;
+      }
+      var l = this._listeners[name], _len = l.length;
+      for (var i=0; i<_len; i++) {
+        if (l[i] == callback) {
+          l.splice(i, 1);
+          break;
+        }
+      }
+    };
+    proto.emit = function emit(name) {
+      var offs = this._listenerOffs = [];
+      if ((! this._listeners) || ! this._listeners[name]) {
+        return;
+      }
+      var args = Array.prototype.slice.call(arguments, 1);
+      var l = this._listeners[name];
+      l.forEach(function (callback) {
+
+        callback.apply(this, args);
+      }, this);
+      delete this._listenerOffs;
+      if (offs.length) {
+        offs.forEach(function (item) {
+          this.off(item[0], item[1]);
+        }, this);
+      }
+
+    };
+    return proto;
+  };
+
+  /* This finalizes the unloading of TogetherJS, including unloading modules */
+  TogetherJS._teardown = function () {
+    var requireObject = TogetherJS._requireObject || window.require;
+    // FIXME: this doesn't clear the context for min-case
+    if (requireObject.s && requireObject.s.contexts) {
+      delete requireObject.s.contexts.togetherjs;
+    }
+    TogetherJS._loaded = false;
+    TogetherJS.startup = TogetherJS._extend(TogetherJS._startupInit);
+    TogetherJS.running = false;
+  };
+
+  TogetherJS._mixinEvents(TogetherJS);
+  TogetherJS._knownEvents = ["ready", "close"];
+  TogetherJS.toString = function () {
+    return "TogetherJS";
+  };
+
+  var defaultHubBase = "https://hub.togetherjs.com";
+  if (defaultHubBase == "__" + "hubUrl"+ "__") {
+    // Substitution wasn't made
+    defaultHubBase = "https://hub.togetherjs.mozillalabs.com";
+  }
+  defaultConfiguration.hubBase = defaultHubBase;
+
+  TogetherJS._configuration = {};
+  TogetherJS._defaultConfiguration = {
+    // Disables clicks for a certain element.
+    // (e.g., 'canvas' would not show clicks on canvas elements.)
+    // Setting this to true will disable clicks globally.
+    dontShowClicks: false,
+    // Experimental feature to echo clicks to certain elements across clients:
+    cloneClicks: false,
+    // Enable Mozilla or Google analytics on the page when TogetherJS is activated:
+    // FIXME: these don't seem to be working, and probably should be removed in favor
+    // of the hub analytics
+    enableAnalytics: false,
+    // The code to enable (this is defaulting to a Mozilla code):
+    analyticsCode: "UA-35433268-28",
+    // The base URL of the hub
+    hubBase: defaultHubBase,
+    // A function that will return the name of the user:
+    getUserName: null,
+    // A function that will return the color of the user:
+    getUserColor: null,
+    // A function that will return the avatar of the user:
+    getUserAvatar: null,
+    // The siteName is used in the walkthrough (defaults to document.title):
+    siteName: null,
+    // Whether to use the minimized version of the code (overriding the built setting)
+    useMinimizedCode: undefined,
+    // Any events to bind to
+    on: {},
+    // Hub events to bind to
+    hub_on: {},
+    // Enables the alt-T alt-T TogetherJS shortcut; however, this setting
+    // must be enabled early as TogetherJSConfig_enableShortcut = true;
+    enableShortcut: false,
+    // The name of this tool as provided to users.  The UI is updated to use this.
+    // Because of how it is used in text it should be a proper noun, e.g.,
+    // "MySite's Collaboration Tool"
+    toolName: null,
+    // Used to auto-start TogetherJS with a {prefix: pageName, max: participants}
+    // Also with findRoom: "roomName" it will connect to the given room name
+    findRoom: null,
+    // If true, starts TogetherJS automatically (of course!)
+    autoStart: false,
+    // If true, then the "Join TogetherJS Session?" confirmation dialog
+    // won't come up
+    suppressJoinConfirmation: false,
+    // If true, then the "Invite a friend" window won't automatically come up
+    suppressInvite: false,
+    // A room in which to find people to invite to this session,
+    inviteFromRoom: null,
+    // This is used to keep sessions from crossing over on the same
+    // domain, if for some reason you want sessions that are limited
+    // to only a portion of the domain:
+    storagePrefix: "togetherjs",
+    // When true, we treat the entire URL, including the hash, as the identifier
+    // of the page; i.e., if you one person is on `http://example.com/#view1`
+    // and another person is at `http://example.com/#view2` then these two people
+    // are considered to be at completely different URLs
+    includeHashInUrl: false,
+    // The language to present the tool in, such as "en-US" or "ru-RU"
+    // Note this must be set as TogetherJSConfig_lang, as it effects the loader
+    // and must be set as soon as this file is included
+    lang: null
+  };
+  // FIXME: there's a point at which configuration can't be updated
+  // (e.g., hubBase after the TogetherJS has loaded).  We should keep
+  // track of these and signal an error if someone attempts to
+  // reconfigure too late
+
+  TogetherJS.getConfig = function (name) { // rename into TogetherJS.config.get()?
+    var value = TogetherJS._configuration[name];
+    if (value === undefined) {
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+        console.error("Tried to load unknown configuration value:", name);
+      }
+      value = TogetherJS._defaultConfiguration[name];
+    }
+    return value;
+  };
+  TogetherJS._defaultConfiguration = defaultConfiguration;
+  TogetherJS._configTrackers = {};
+  TogetherJS._configClosed = {};
+
+  /* TogetherJS.config(configurationObject)
+     or: TogetherJS.config(configName, value)
+
+     Adds configuration to TogetherJS.  You may also set the global variable TogetherJSConfig
+     and when TogetherJS is started that configuration will be loaded.
+
+     Unknown configuration values will lead to console error messages.
+     */
+  TogetherJS.config = function (name, maybeValue) {
+    var settings;
+    if (arguments.length == 1) {
+      if (typeof name != "object") {
+        throw new Error('TogetherJS.config(value) must have an object value (not: ' + name + ')');
+      }
+      settings = name;
+    } else {
+      settings = {};
+      settings[name] = maybeValue;
+    }
+    var i;
+    var tracker;
+    for (var attr in settings) {
+      if (settings.hasOwnProperty(attr)) {
+        if (TogetherJS._configClosed[attr] && TogetherJS.running) {
+          throw new Error("The configuration " + attr + " is finalized and cannot be changed");
+        }
+      }
+    }
+    for (var attr in settings) {
+      if (! settings.hasOwnProperty(attr)) {
+        continue;
+      }
+      if (attr == "loaded" || attr == "callToStart") {
+        continue;
+      }
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(attr)) {
+        console.warn("Unknown configuration value passed to TogetherJS.config():", attr);
+      }
+      var previous = TogetherJS._configuration[attr];
+      var value = settings[attr];
+      TogetherJS._configuration[attr] = value;
+      var trackers = TogetherJS._configTrackers[name] || [];
+      var failed = false;
+      for (i=0; i<trackers.length; i++) {
+        try {
+          tracker = trackers[i];
+          tracker(value, previous);
+        } catch (e) {
+          console.warn("Error setting configuration", name, "to", value,
+                       ":", e, "; reverting to", previous);
+          failed = true;
+          break;
+        }
+      }
+      if (failed) {
+        TogetherJS._configuration[attr] = previous;
+        for (i=0; i<trackers.length; i++) {
+          try {
+            tracker = trackers[i];
+            tracker(value);
+          } catch (e) {
+            console.warn("Error REsetting configuration", name, "to", previous,
+                         ":", e, "(ignoring)");
+          }
+        }
+      }
+    }
+  };
+
+  TogetherJS.config.get = function (name) {
+    var value = TogetherJS._configuration[name];
+    if (value === undefined) {
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+        console.error("Tried to load unknown configuration value:", name);
+      }
+      value = TogetherJS._defaultConfiguration[name];
+    }
+    return value;
+  };
+
+  TogetherJS.config.track = function (name, callback) {
+    if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+      throw new Error("Configuration is unknown: " + name);
+    }
+    callback(TogetherJS.config.get(name));
+    if (! TogetherJS._configTrackers[name]) {
+      TogetherJS._configTrackers[name] = [];
+    }
+    TogetherJS._configTrackers[name].push(callback);
+    return callback;
+  };
+
+  TogetherJS.config.close = function (name) {
+    if (! TogetherJS._defaultConfiguration.hasOwnProperty(name)) {
+      throw new Error("Configuration is unknown: " + name);
+    }
+    TogetherJS._configClosed[name] = true;
+  };
+
+  TogetherJS.reinitialize = function () {
+    if (TogetherJS.running && typeof TogetherJS.require == "function") {
+      TogetherJS.require(["session"], function (session) {
+        session.emit("reinitialize");
+      });
+    }
+    // If it's not set, TogetherJS has not been loaded, and reinitialization is not needed
+  };
+
+  TogetherJS.refreshUserData = function () {
+    if (TogetherJS.running && typeof TogetherJS.require ==  "function") {
+      TogetherJS.require(["session"], function (session) {
+        session.emit("refresh-user-data");
+      });
+    }
+  };
+
+  // This should contain the output of "git describe --always --dirty"
+  // FIXME: substitute this on the server (and update make-static-client)
+  TogetherJS.version = version;
+  TogetherJS.baseUrl = baseUrl;
+
+  TogetherJS.hub = TogetherJS._mixinEvents({});
+
+  TogetherJS._onmessage = function (msg) {
+    var type = msg.type;
+    if (type.search(/^app\./) === 0) {
+      type = type.substr("app.".length);
+    } else {
+      type = "togetherjs." + type;
+    }
+    msg.type = type;
+    TogetherJS.hub.emit(msg.type, msg);
+  };
+
+  TogetherJS.send = function (msg) {
+    if (! TogetherJS.require) {
+      throw "You cannot use TogetherJS.send() when TogetherJS is not running";
+    }
+    var session = TogetherJS.require("session");
+    session.appSend(msg);
+  };
+
+  TogetherJS.shareUrl = function () {
+    if (! TogetherJS.require) {
+      return null;
+    }
+    var session = TogetherJS.require("session");
+    return session.shareUrl();
+  };
+
+  // pgbovine - added
+  TogetherJS.shareId = function () {
+    if (! TogetherJS.require) {
+      return null;
+    }
+    var session = TogetherJS.require("session");
+    assert(session.shareId, "Attempted to access shareId before it is set");
+    return session.shareId;
+  };
+
+  var listener = null;
+
+  TogetherJS.listenForShortcut = function () {
+    console.warn("Listening for alt-T alt-T to start TogetherJS");
+    TogetherJS.removeShortcut();
+    listener = function listener(event) {
+      if (event.which == 84 && event.altKey) {
+        if (listener.pressed) {
+          // Second hit
+          TogetherJS();
+        } else {
+          listener.pressed = true;
+        }
+      } else {
+        listener.pressed = false;
+      }
+    };
+    TogetherJS.once("ready", TogetherJS.removeShortcut);
+    document.addEventListener("keyup", listener, false);
+  };
+
+  TogetherJS.removeShortcut = function () {
+    if (listener) {
+      document.addEventListener("keyup", listener, false);
+      listener = null;
+    }
+  };
+
+  TogetherJS.config.track("enableShortcut", function (enable, previous) {
+    if (enable) {
+      TogetherJS.listenForShortcut();
+    } else if (previous) {
+      TogetherJS.removeShortcut();
+    }
+  });
+
+  TogetherJS.checkForUsersOnChannel = function (address, callback) {
+    if (address.search(/^https?:/i) === 0) {
+      address = address.replace(/^http/i, 'ws');
+    }
+    var socket = new WebSocket(address);
+    var gotAnswer = false;
+    socket.onmessage = function (event) {
+      var msg = JSON.parse(event.data);
+      if (msg.type != "init-connection") {
+        console.warn("Got unexpected first message (should be init-connection):", msg);
+        return;
+      }
+      if (gotAnswer) {
+        console.warn("Somehow received two responses from channel; ignoring second");
+        socket.close();
+        return;
+      }
+      gotAnswer = true;
+      socket.close();
+      callback(msg.peerCount);
+    };
+    socket.onclose = socket.onerror = function () {
+      if (! gotAnswer) {
+        console.warn("Socket was closed without receiving answer");
+        gotAnswer = true;
+        callback(undefined);
+      }
+    };
+  };
+
+  // It's nice to replace this early, before the load event fires, so we conflict
+  // as little as possible with the app we are embedded in:
+  var hash = location.hash.replace(/^#/, "");
+  var m = /&?togetherjs=([^&]*)/.exec(hash);
+  if (m) {
+    TogetherJS.startup._joinShareId = m[1];
+    TogetherJS.startup.reason = "joined";
+    var newHash = hash.substr(0, m.index) + hash.substr(m.index + m[0].length);
+    location.hash = newHash;
+  }
+  if (window._TogetherJSShareId) {
+    // A weird hack for something the addon does, to force a shareId.
+    // FIXME: probably should remove, it's a wonky feature.
+    TogetherJS.startup._joinShareId = window._TogetherJSShareId;
+    delete window._TogetherJSShareId;
+  }
+
+  function conditionalActivate() {
+    if (window.TogetherJSConfig_noAutoStart) {
+      return;
+    }
+    // A page can define this function to defer TogetherJS from starting
+    var callToStart = window.TogetherJSConfig_callToStart;
+    if (! callToStart && window.TowTruckConfig_callToStart) {
+      callToStart = window.TowTruckConfig_callToStart;
+      console.warn("Please rename TowTruckConfig_callToStart to TogetherJSConfig_callToStart");
+    }
+    if (window.TogetherJSConfig && window.TogetherJSConfig.callToStart) {
+      callToStart = window.TogetherJSConfig.callToStart;
+    }
+    if (callToStart) {
+      // FIXME: need to document this:
+      callToStart(onload);
+    } else {
+      onload();
+    }
+  }
+
+  // FIXME: can we push this up before the load event?
+  // Do we need to wait at all?
+  function onload() {
+    if (TogetherJS.startup._joinShareId) {
+      TogetherJS();
+    } else if (window._TogetherJSBookmarklet) {
+      delete window._TogetherJSBookmarklet;
+      TogetherJS();
+    } else {
+      // FIXME: this doesn't respect storagePrefix:
+      var key = "togetherjs-session.status";
+      var value = sessionStorage.getItem(key);
+      if (value) {
+        value = JSON.parse(value);
+        if (value && value.running) {
+          TogetherJS.startup.continued = true;
+          TogetherJS.startup.reason = value.startupReason;
+          TogetherJS();
+        }
+      } else if (window.TogetherJSConfig_autoStart ||
+                 (window.TogetherJSConfig && window.TogetherJSConfig.autoStart)) {
+        TogetherJS.startup.reason = "joined";
+        TogetherJS();
+      }
+    }
+  }
+
+  conditionalActivate();
+
+  // FIXME: wait until load event to double check if this gets set?
+  if (window.TogetherJSConfig_enableShortcut) {
+    TogetherJS.listenForShortcut();
+  }
+
+  // For compatibility:
+  window.TowTruck = TogetherJS;
+
+})();
diff --git a/v3/js/togetherjs/togetherjs/analytics.js b/v3/js/togetherjs/togetherjs/analytics.js
new file mode 100644
index 000000000..86f802b8b
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/analytics.js
@@ -0,0 +1,27 @@
+define(["util"], function (util) {
+  var analytics = util.Module("analytics");
+
+  analytics.activate = function () {
+    var enable = TogetherJS.config.get("enableAnalytics");
+    var code = TogetherJS.config.get("analyticsCode");
+    TogetherJS.config.close("enableAnalytics");
+    TogetherJS.config.close("analyticsCode");
+    if (! (enable && code)) {
+      return;
+    }
+    // This is intended to be global:
+    var gaq = window._gaq || [];
+    gaq.push(["_setAccount", code]);
+    gaq.push(['_setDomainName', location.hostname]);
+    gaq.push(["_trackPageview"]);
+    window._gaq = gaq;
+
+    (function() {
+      var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+      ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+      var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+    })();
+  };
+
+  return analytics;
+});
diff --git a/v3/js/togetherjs/togetherjs/channels.js b/v3/js/togetherjs/togetherjs/channels.js
new file mode 100644
index 000000000..3bae4a8bc
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/channels.js
@@ -0,0 +1,472 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Channel abstraction.  Supported channels:
+
+- WebSocket to an address
+- postMessage between windows
+
+In the future:
+
+- XMLHttpRequest to a server (with some form of queuing)
+
+The interface:
+
+  channel = new ChannelName(parameters)
+
+The instantiation is specific to the kind of channel
+
+Methods:
+
+  onmessage: set to function (jsonData)
+  rawdata: set to true if you want onmessage to receive raw string data
+  onclose: set to function ()
+  send: function (string or jsonData)
+  close: function ()
+
+.send() will encode the data if it is not a string.
+
+(should I include readyState as an attribute?)
+
+Channels must accept messages immediately, caching if the connection
+is not fully established yet.
+
+*/
+
+define(["util"], function (util) {
+
+var channels = util.Module("channels");
+/* Subclasses must define:
+
+- ._send(string)
+- ._setupConnection()
+- ._ready()
+- .close() (and must set this.closed to true)
+
+And must call:
+
+- ._flush() on open
+- ._incoming(string) on incoming message
+- onclose() (not onmessage - instead _incoming)
+- emit("close")
+*/
+
+var AbstractChannel = util.mixinEvents({
+  onmessage: null,
+  rawdata: false,
+  onclose: null,
+  closed: false,
+
+  baseConstructor: function () {
+    this._buffer = [];
+    this._setupConnection();
+  },
+
+  send: function (data) {
+    if (this.closed) {
+      throw 'Cannot send to a closed connection';
+    }
+    if (typeof data != "string") {
+      data = JSON.stringify(data);
+    }
+    if (! this._ready()) {
+      this._buffer.push(data);
+      return;
+    }
+    this._send(data);
+  },
+
+  _flush: function () {
+    for (var i=0; i<this._buffer.length; i++) {
+      this._send(this._buffer[i]);
+    }
+    this._buffer = [];
+  },
+
+  _incoming: function (data) {
+    if (! this.rawdata) {
+      try {
+        data = JSON.parse(data);
+      } catch (e) {
+        console.error("Got invalid JSON data:", data.substr(0, 40));
+        throw e;
+      }
+    }
+    if (this.onmessage) {
+      this.onmessage(data);
+    }
+    this.emit("message", data);
+  }
+
+});
+
+
+channels.WebSocketChannel = util.Class(AbstractChannel, {
+
+  constructor: function (address) {
+    if (address.search(/^https?:/i) === 0) {
+      address = address.replace(/^http/i, 'ws');
+    }
+    this.address = address;
+    this.socket = null;
+    this._reopening = false;
+    this._lastConnectTime = 0;
+    this._backoff = 0;
+    this.baseConstructor();
+  },
+
+  backoffTime: 50, // Milliseconds to add to each reconnect time
+  maxBackoffTime: 1500,
+  backoffDetection: 2000, // Amount of time since last connection attempt that shows we need to back off
+
+  toString: function () {
+    var s = '[WebSocketChannel to ' + this.address;
+    if (! this.socket) {
+      s += ' (socket unopened)';
+    } else {
+      s += ' readyState: ' + this.socket.readyState;
+    }
+    if (this.closed) {
+      s += ' CLOSED';
+    }
+    return s + ']';
+  },
+
+  close: function () {
+    this.closed = true;
+    if (this.socket) {
+      // socket.onclose will call this.onclose:
+      this.socket.close();
+    } else {
+      if (this.onclose) {
+        this.onclose();
+      }
+      this.emit("close");
+    }
+  },
+
+  _send: function (data) {
+    this.socket.send(data);
+  },
+
+  _ready: function () {
+    return this.socket && this.socket.readyState == this.socket.OPEN;
+  },
+
+  _setupConnection: function () {
+    if (this.closed) {
+      return;
+    }
+    this._lastConnectTime = Date.now();
+    this.socket = new WebSocket(this.address);
+    this.socket.onopen = (function () {
+      this._flush();
+      this._reopening = false;
+    }).bind(this);
+    this.socket.onclose = (function (event) {
+      this.socket = null;
+      var method = "error";
+      if (event.wasClean) {
+        // FIXME: should I even log clean closes?
+        method = "log";
+      }
+      console[method]('WebSocket close', event.wasClean ? 'clean' : 'unclean',
+                      'code:', event.code, 'reason:', event.reason || 'none');
+      if (! this.closed) {
+        this._reopening = true;
+        if (Date.now() - this._lastConnectTime > this.backoffDetection) {
+          this._backoff = 0;
+        } else {
+          this._backoff++;
+        }
+        var time = Math.min(this._backoff * this.backoffTime, this.maxBackoffTime);
+        setTimeout((function () {
+          this._setupConnection();
+        }).bind(this), time);
+      }
+    }).bind(this);
+    this.socket.onmessage = (function (event) {
+      this._incoming(event.data);
+    }).bind(this);
+    this.socket.onerror = (function (event) {
+      console.error('WebSocket error:', event.data);
+    }).bind(this);
+  }
+
+});
+
+
+/* Sends TO a window or iframe */
+channels.PostMessageChannel = util.Class(AbstractChannel, {
+  _pingPollPeriod: 100, // milliseconds
+  _pingPollIncrease: 100, // +100 milliseconds for each failure
+  _pingMax: 2000, // up to a max of 2000 milliseconds
+
+  constructor: function (win, expectedOrigin) {
+    this.expectedOrigin = expectedOrigin;
+    this._pingReceived = false;
+    this._receiveMessage = this._receiveMessage.bind(this);
+    if (win) {
+      this.bindWindow(win, true);
+    }
+    this._pingFailures = 0;
+    this.baseConstructor();
+  },
+
+  toString: function () {
+    var s = '[PostMessageChannel';
+    if (this.window) {
+      s += ' to window ' + this.window;
+    } else {
+      s += ' not bound to a window';
+    }
+    if (this.window && ! this._pingReceived) {
+      s += ' still establishing';
+    }
+    return s + ']';
+  },
+
+  bindWindow: function (win, noSetup) {
+    if (this.window) {
+      this.close();
+      // Though we deinitialized everything, we aren't exactly closed:
+      this.closed = false;
+    }
+    if (win && win.contentWindow) {
+      win = win.contentWindow;
+    }
+    this.window = win;
+    // FIXME: The distinction between this.window and window seems unimportant
+    // in the case of postMessage
+    var w = this.window;
+    // In a Content context we add the listener to the local window
+    // object, but in the addon context we add the listener to some
+    // other window, like the one we were given:
+    if (typeof window != "undefined") {
+      w = window;
+    }
+    w.addEventListener("message", this._receiveMessage, false);
+    if (! noSetup) {
+      this._setupConnection();
+    }
+  },
+
+  _send: function (data) {
+    this.window.postMessage(data, this.expectedOrigin || "*");
+  },
+
+  _ready: function () {
+    return this.window && this._pingReceived;
+  },
+
+  _setupConnection: function () {
+    if (this.closed || this._pingReceived || (! this.window)) {
+      return;
+    }
+    this._pingFailures++;
+    this._send("hello");
+    // We'll keep sending ping messages until we get a reply
+    var time = this._pingPollPeriod + (this._pingPollIncrease * this._pingFailures);
+    time = time > this._pingPollMax ? this._pingPollMax : time;
+    this._pingTimeout = setTimeout(this._setupConnection.bind(this), time);
+  },
+
+  _receiveMessage: function (event) {
+    if (event.source !== this.window) {
+      return;
+    }
+    if (this.expectedOrigin && event.origin != this.expectedOrigin) {
+      console.info("Expected message from", this.expectedOrigin,
+                   "but got message from", event.origin);
+      return;
+    }
+    if (! this.expectedOrigin) {
+      this.expectedOrigin = event.origin;
+    }
+    if (event.data == "hello") {
+      this._pingReceived = true;
+      if (this._pingTimeout) {
+        clearTimeout(this._pingTimeout);
+        this._pingTimeout = null;
+      }
+      this._flush();
+      return;
+    }
+    this._incoming(event.data);
+  },
+
+  close: function () {
+    this.closed = true;
+    this._pingReceived = false;
+    if (this._pingTimeout) {
+      clearTimeout(this._pingTimeout);
+    }
+    window.removeEventListener("message", this._receiveMessage, false);
+    if (this.onclose) {
+      this.onclose();
+    }
+    this.emit("close");
+  }
+
+});
+
+
+/* Handles message FROM an exterior window/parent */
+channels.PostMessageIncomingChannel = util.Class(AbstractChannel, {
+
+  constructor: function (expectedOrigin) {
+    this.source = null;
+    this.expectedOrigin = expectedOrigin;
+    this._receiveMessage = this._receiveMessage.bind(this);
+    window.addEventListener("message", this._receiveMessage, false);
+    this.baseConstructor();
+  },
+
+  toString: function () {
+    var s = '[PostMessageIncomingChannel';
+    if (this.source) {
+      s += ' bound to source ' + s;
+    } else {
+      s += ' awaiting source';
+    }
+    return s + ']';
+  },
+
+  _send: function (data) {
+    this.source.postMessage(data, this.expectedOrigin);
+  },
+
+  _ready: function () {
+    return !!this.source;
+  },
+
+  _setupConnection: function () {
+  },
+
+  _receiveMessage: function (event) {
+    if (this.expectedOrigin && this.expectedOrigin != "*" &&
+        event.origin != this.expectedOrigin) {
+      // FIXME: Maybe not worth mentioning?
+      console.info("Expected message from", this.expectedOrigin,
+                   "but got message from", event.origin);
+      return;
+    }
+    if (! this.expectedOrigin) {
+      this.expectedOrigin = event.origin;
+    }
+    if (! this.source) {
+      this.source = event.source;
+    }
+    if (event.data == "hello") {
+      // Just a ping
+      this.source.postMessage("hello", this.expectedOrigin);
+      return;
+    }
+    this._incoming(event.data);
+  },
+
+  close: function () {
+    this.closed = true;
+    window.removeEventListener("message", this._receiveMessage, false);
+    if (this._pingTimeout) {
+      clearTimeout(this._pingTimeout);
+    }
+    if (this.onclose) {
+      this.onclose();
+    }
+    this.emit("close");
+  }
+
+});
+
+channels.Router = util.Class(util.mixinEvents({
+
+  constructor: function (channel) {
+    this._channelMessage = this._channelMessage.bind(this);
+    this._channelClosed = this._channelClosed.bind(this);
+    this._routes = Object.create(null);
+    if (channel) {
+      this.bindChannel(channel);
+    }
+  },
+
+  bindChannel: function (channel) {
+    if (this.channel) {
+      this.channel.removeListener("message", this._channelMessage);
+      this.channel.removeListener("close", this._channelClosed);
+    }
+    this.channel = channel;
+    this.channel.on("message", this._channelMessage.bind(this));
+    this.channel.on("close", this._channelClosed.bind(this));
+  },
+
+  _channelMessage: function (msg) {
+    if (msg.type == "route") {
+      var id = msg.routeId;
+      var route = this._routes[id];
+      if (! route) {
+        console.warn("No route with the id", id);
+        return;
+      }
+      if (msg.close) {
+        this._closeRoute(route.id);
+      } else {
+        if (route.onmessage) {
+          route.onmessage(msg.message);
+        }
+        route.emit("message", msg.message);
+      }
+    }
+  },
+
+  _channelClosed: function () {
+    for (var id in this._routes) {
+      this._closeRoute(id);
+    }
+  },
+
+  _closeRoute: function (id) {
+    var route = this._routes[id];
+    if (route.onclose) {
+      route.onclose();
+    }
+    route.emit("close");
+    delete this._routes[id];
+  },
+
+  makeRoute: function (id) {
+    id = id || util.generateId();
+    var route = Route(this, id);
+    this._routes[id] = route;
+    return route;
+  }
+}));
+
+var Route = util.Class(util.mixinEvents({
+  constructor: function (router, id) {
+    this.router = router;
+    this.id = id;
+  },
+
+  send: function (msg) {
+    this.router.channel.send({
+      type: "route",
+      routeId: this.id,
+      message: msg
+    });
+  },
+
+  close: function () {
+    if (this.router._routes[this.id] !== this) {
+      // This route instance has been overwritten, so ignore
+      return;
+    }
+    delete this.router._routes[this.id];
+  }
+
+}));
+
+return channels;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/chat.js b/v3/js/togetherjs/togetherjs/chat.js
new file mode 100644
index 000000000..b069fb9e5
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/chat.js
@@ -0,0 +1,395 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*jshint evil:true */
+define(["require", "jquery", "util", "session", "ui", "templates", "playback", "storage", "peers", "windowing"], function (require, $, util, session, ui, templates, playback, storage, peers, windowing) {
+  var chat = util.Module("chat");
+  var assert = util.assert;
+  var Walkabout;
+
+  session.hub.on("chat", function (msg) {
+    ui.chat.text({
+      text: msg.text,
+      peer: msg.peer,
+      // FIXME: a little unsure of trusting this (maybe I should prefix it?)
+      messageId: msg.messageId,
+      notify: true
+    });
+    saveChatMessage({
+      text: msg.text,
+      date: Date.now(),
+      peerId: msg.peer.id,
+      messageId: msg.messageId
+    });
+  });
+
+  // FIXME: this doesn't really belong in this module:
+  session.hub.on("bye", function (msg) {
+    ui.chat.leftSession({
+      peer: msg.peer,
+      declinedJoin: msg.reason == "declined-join"
+    });
+  });
+
+  chat.submit = function (message) {
+    var parts = message.split(/ /);
+    if (parts[0].charAt(0) == "/") {
+      var name = parts[0].substr(1).toLowerCase();
+      var method = commands["command_" + name];
+      if (method) {
+        method.apply(null, parts.slice(1));
+        return;
+      }
+    }
+    var messageId = session.clientId + "-" + Date.now();
+    session.send({
+      type: "chat",
+      text: message,
+      messageId: messageId
+    });
+    ui.chat.text({
+      text: message,
+      peer: peers.Self,
+      messageId: messageId,
+      notify: false
+    });
+    saveChatMessage({
+      text: message,
+      date: Date.now(),
+      peerId: peers.Self.id,
+      messageId: messageId
+    });
+  };
+
+  var commands = {
+    command_help: function () {
+      var msg = util.trim(templates("help"));
+      ui.chat.system({
+        text: msg
+      });
+    },
+
+    command_test: function (args) {
+      if (! Walkabout) {
+        require(["walkabout"], (function (WalkaboutModule) {
+          Walkabout = WalkaboutModule;
+          this.command_test(args);
+        }).bind(this));
+        return;
+      }
+      args = util.trim(args || "").split(/\s+/g);
+      if (args[0] === "" || ! args.length) {
+        if (this._testCancel) {
+          args = ["cancel"];
+        } else {
+          args = ["start"];
+        }
+      }
+      if (args[0] == "cancel") {
+        ui.chat.system({
+          text: "Aborting test"
+        });
+        this._testCancel();
+        this._testCancel = null;
+        return;
+      }
+      if (args[0] == "start") {
+        var times = parseInt(args[1], 10);
+        if (isNaN(times) || ! times) {
+          times = 100;
+        }
+        ui.chat.system({
+          text: "Testing with walkabout.js"
+        });
+        var tmpl = $(templates("walkabout"));
+        var container = ui.container.find(".togetherjs-test-container");
+        container.empty();
+        container.append(tmpl);
+        container.show();
+        var statusContainer = container.find(".togetherjs-status");
+        statusContainer.text("starting...");
+        this._testCancel = Walkabout.runManyActions({
+          ondone: function () {
+            statusContainer.text("done");
+            statusContainer.one("click", function () {
+              container.hide();
+            });
+            this._testCancel = null;
+          },
+          onstatus: function (status) {
+            var note = "actions: " + status.actions.length + " running: " +
+              (status.times - status.remaining) + " / " + status.times;
+            statusContainer.text(note);
+          }
+        });
+        return;
+      }
+      if (args[0] == "show") {
+        if (this._testShow.length) {
+          this._testShow.forEach(function (item) {
+            if (item) {
+              item.remove();
+            }
+          }, this);
+          this._testShow = [];
+        } else {
+          var actions = Walkabout.findActions();
+          actions.forEach(function (action) {
+            this._testShow.push(action.show());
+          }, this);
+        }
+        return;
+      }
+      if (args[0] == "describe") {
+        Walkabout.findActions().forEach(function (action) {
+          ui.chat.system({
+            text: action.description()
+          });
+        }, this);
+        return;
+      }
+      ui.chat.system({
+        text: "Did not understand: " + args.join(" ")
+      });
+    },
+
+    _testCancel: null,
+    _testShow: [],
+
+    command_clear: function () {
+      ui.chat.clear();
+    },
+
+    command_exec: function () {
+      var expr = Array.prototype.slice.call(arguments).join(" ");
+      var result;
+      // We use this to force global eval (not in this scope):
+      var e = eval;
+      try {
+        result = e(expr);
+      } catch (error) {
+        ui.chat.system({
+          text: "Error: " + error
+        });
+      }
+      if (result !== undefined) {
+        ui.chat.system({
+          text: "" + result
+        });
+      }
+    },
+
+    command_record: function () {
+      ui.chat.system({
+        text: "When you see the robot appear, the recording will have started"
+      });
+      window.open(
+        session.recordUrl(), "_blank",
+        "left,width=" + ($(window).width() / 2));
+    },
+
+    playing: null,
+
+    command_playback: function (url) {
+      if (this.playing) {
+        this.playing.cancel();
+        this.playing.unload();
+        this.playing = null;
+        ui.chat.system({
+          text: "playback cancelled"
+        });
+        return;
+      }
+      if (! url) {
+        ui.chat.system({
+          text: "Nothing is playing"
+        });
+        return;
+      }
+      var logLoader = playback.getLogs(url);
+      logLoader.then(
+        (function (logs) {
+          if (! logs) {
+            ui.chat.system({
+              text: "No logs found."
+            });
+            return;
+          }
+          logs.save();
+          this.playing = logs;
+          logs.play();
+        }).bind(this),
+        function (error) {
+          ui.chat.system({
+            text: "Error fetching " + url + ":\n" + JSON.stringify(error, null, "  ")
+          });
+        });
+      windowing.hide("#togetherjs-chat");
+    },
+
+    command_savelogs: function (name) {
+      session.send({
+        type: "get-logs",
+        forClient: session.clientId,
+        saveAs: name
+      });
+      function save(msg) {
+        if (msg.request.forClient == session.clientId && msg.request.saveAs == name) {
+          storage.set("recording." + name, msg.logs).then(function () {
+            session.hub.off("logs", save);
+            ui.chat.system({
+              text: "Saved as local:" + name
+            });
+          });
+        }
+      }
+      session.hub.on("logs", save);
+    },
+
+    command_baseurl: function (url) {
+      if (! url) {
+        storage.get("baseUrlOverride").then(function (b) {
+          if (b) {
+            ui.chat.system({
+              text: "Set to: " + b.baseUrl
+            });
+          } else {
+            ui.chat.system({
+              text: "No baseUrl override set"
+            });
+          }
+        });
+        return;
+      }
+      url = url.replace(/\/*$/, "");
+      ui.chat.system({
+        text: "If this goes wrong, do this in the console to reset:\n  localStorage.setItem('togetherjs.baseUrlOverride', null)"
+      });
+      storage.set("baseUrlOverride", {
+        baseUrl: url,
+        expiresAt: Date.now() + (1000 * 60 * 60 * 24)
+      }).then(function () {
+        ui.chat.system({
+          text: "baseUrl overridden (to " + url + "), will last for one day."
+        });
+      });
+    },
+
+    command_config: function (variable, value) {
+      if (! (variable || value)) {
+        storage.get("configOverride").then(function (c) {
+          if (c) {
+            util.forEachAttr(c, function (value, attr) {
+              if (attr == "expiresAt") {
+                return;
+              }
+              ui.chat.system({
+                text: "  " + attr + " = " + JSON.stringify(value)
+              });
+            });
+            ui.chat.system({
+              text: "Config expires at " + (new Date(c.expiresAt))
+            });
+          } else {
+            ui.chat.system({
+              text: "No config override"
+            });
+          }
+        });
+        return;
+      }
+      if (variable == "clear") {
+        storage.set("configOverride", undefined);
+        ui.chat.system({
+          text: "Clearing all overridden configuration"
+        });
+        return;
+      }
+      console.log("config", [variable, value]);
+      if (! (variable && value)) {
+        ui.chat.system({
+          text: "Error: must provide /config VAR VALUE"
+        });
+        return;
+      }
+      try {
+        value = JSON.parse(value);
+      } catch (e) {
+        ui.chat.system({
+          text: "Error: value (" + value + ") could not be parsed: " + e
+        });
+        return;
+      }
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(variable)) {
+        ui.chat.system({
+          text: "Warning: variable " + variable + " is unknown"
+        });
+      }
+      storage.get("configOverride").then(function (c) {
+        c = c || {};
+        c[variable] = value;
+        c.expiresAt = Date.now() + (1000 * 60 * 60 * 24);
+        storage.set("configOverride", c).then(function () {
+          ui.chat.system({
+            text: "Variable " + variable + " = " + JSON.stringify(value) + "\nValue will be set for one day."
+          });
+        });
+      });
+    }
+
+  };
+
+  // this section deal with saving/restoring chat history as long as session is alive
+  var chatStorageKey = "chatlog";
+  var maxLogMessages = 100;
+
+  function saveChatMessage(obj) {
+    assert(obj.peerId);
+    assert(obj.messageId);
+    assert(obj.date);
+    assert(typeof obj.text == "string");
+
+    loadChatLog().then(function (log) {
+      for (var i = log.length - 1; i >= 0; i--) {
+        if (log[i].messageId === obj.messageId) {
+          return;
+        }
+      }
+      log.push(obj);
+      if (log.length > maxLogMessages) {
+        log.splice(0, log.length - maxLogMessages);
+      }
+      storage.tab.set(chatStorageKey, log);
+    });
+  }
+
+  function loadChatLog() {
+    return storage.tab.get(chatStorageKey, []);
+  }
+
+  session.once("ui-ready", function () {
+    loadChatLog().then(function (log) {
+      if (! log) {
+        return;
+      }
+      for (var i = 0; i < log.length; i++) {
+        // peers should already be loaded from sessionStorage by the peers module
+        // maybe i should use a try catch block here
+        var currentPeer = peers.getPeer(log[i].peerId);
+        ui.chat.text({
+          text: log[i].text,
+          date: log[i].date,
+          peer: currentPeer,
+          messageId: log[i].messageId
+        });
+      }
+    });
+  });
+  //delete chat log
+  session.on("close", function(){
+    storage.tab.set(chatStorageKey, undefined);
+  });
+
+  return chat;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/console.js b/v3/js/togetherjs/togetherjs/console.js
new file mode 100644
index 000000000..ad7aa8ba0
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/console.js
@@ -0,0 +1,286 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define(["util"], function (util) {
+
+  var console = window.console || {log: function () {}};
+
+  var Console = util.Class({
+    constructor: function () {
+      this.messages = [];
+      this.level = this.levels.log;
+    },
+
+    messageLimit: 100,
+
+    levels: {
+      debug: 1,
+      // FIXME: I'm considering *not* wrapping console.log, and strictly keeping
+      // it as a debugging tool; also line numbers would be preserved
+      log: 2,
+      info: 3,
+      notify: 4,
+      warn: 5,
+      error: 6,
+      fatal: 7
+    },
+
+    // Gets set below:
+    maxLevel: 0,
+
+    consoleLevels: [
+      [],
+      console.debug || [],
+      console.log || [],
+      console.info || [],
+      console.notify || [],
+      console.warn || [],
+      console.error || [],
+      console.fatal || []
+    ],
+
+    levelNames: {},
+
+    setLevel: function (l) {
+      var number;
+      if (typeof l == "string") {
+        number = this.levels[l];
+        if (number === undefined) {
+          throw new Error("Tried to set Console level to unknown level string: " + l);
+        }
+        l = number;
+      }
+      if (typeof l == "function") {
+        number = this.consoleLevels.indexOf(l);
+        if (number == -1) {
+          throw new Error("Tried to set Console level based on unknown console function: " + l);
+        }
+        l = number;
+      }
+      if (typeof l == "number") {
+        if (l < 0) {
+          throw new Error("Console level must be 0 or larger: " + l);
+        } else if (l > this.maxLevel) {
+          throw new Error("Console level must be " + this.maxLevel + " or smaller: " + l);
+        }
+      }
+      this.level = l;
+    },
+
+    write: function (level) {
+      try {
+        this.messages.push([
+          Date.now(),
+          level,
+          this._stringify(Array.prototype.slice.call(arguments, 1))
+        ]);
+      } catch (e) {
+        console.warn("Error stringifying argument:", e);
+      }
+      if (level != "suppress" && this.level <= level) {
+        var method = console[this.levelNames[level]];
+        if (! method) {
+          method = console.log;
+        }
+        method.apply(console, Array.prototype.slice.call(arguments, 1));
+      }
+    },
+
+    suppressedWrite: function () {
+      this.write.apply(this, ["suppress"].concat(Array.prototype.slice.call(arguments)));
+    },
+
+    trace: function (level) {
+      level = level || 'log';
+      if (console.trace) {
+        level = "suppressedWrite";
+      }
+      try {
+        throw new Error();
+      } catch (e) {
+        // FIXME: trim this frame
+        var stack = e.stack;
+        stack = stack.replace(/^[^\n]*\n/, "");
+        this[level](stack);
+      }
+      if (console.trace) {
+        console.trace();
+      }
+    },
+
+    _browserInfo: function () {
+      // FIXME: add TogetherJS version and
+      return [
+        "TogetherJS base URL: " + TogetherJS.baseUrl,
+        "User Agent: " + navigator.userAgent,
+        "Page loaded: " + this._formatDate(TogetherJS.pageLoaded),
+        "Age: " + this._formatMinutes(Date.now() - TogetherJS.pageLoaded) + " minutes",
+        // FIXME: make this right:
+        //"Window: height: " + window.screen.height + " width: " + window.screen.width
+        "URL: " + location.href,
+        "------+------+----------------------------------------------"
+      ];
+    },
+
+    _stringify: function (args) {
+      var s = "";
+      for (var i=0; i<args.length; i++) {
+        if (s) {
+          s += " ";
+        }
+        s += this._stringifyItem(args[i]);
+      }
+      return s;
+    },
+
+    _stringifyItem: function (item) {
+      if (typeof item == "string") {
+        if (item === "") {
+          return '""';
+        }
+        return item;
+      }
+      if (typeof item == "object" && item.repr) {
+        try {
+          return item.repr();
+        } catch (e) {
+          console.warn("Error getting object repr:", item, e);
+        }
+      }
+      if (item !== null && typeof item == "object") {
+        // FIXME: this can drop lots of kinds of values, like a function or undefined
+        item = JSON.stringify(item);
+      }
+      return item.toString();
+    },
+
+    _formatDate: function (timestamp) {
+      return (new Date(timestamp)).toISOString();
+    },
+
+    _formatTime: function (timestamp) {
+      return ((timestamp - TogetherJS.pageLoaded) / 1000).toFixed(2);
+    },
+
+    _formatMinutes: function (milliseconds) {
+      var m = Math.floor(milliseconds / 1000 / 60);
+      var remaining = milliseconds - (m * 1000 * 60);
+      if (m > 10) {
+        // Over 10 minutes, just ignore the seconds
+        return m;
+      }
+      var seconds = Math.floor(remaining / 1000) + "";
+      m += ":";
+      seconds = lpad(seconds, 2, "0");
+      m += seconds;
+      if (m == "0:00") {
+        m += ((remaining / 1000).toFixed(3) + "").substr(1);
+      }
+      return m;
+    },
+
+    _formatLevel: function (l) {
+      if (l === "suppress") {
+        return "";
+      }
+      return this.levelNames[l];
+    },
+
+    toString: function () {
+      try {
+        var lines = this._browserInfo();
+        this.messages.forEach(function (m) {
+          lines.push(lpad(this._formatTime(m[0]), 6) + " " + rpad(this._formatLevel(m[1]), 6) + " " + lpadLines(m[2], 14));
+        }, this);
+        return lines.join("\n");
+      } catch (e) {
+        // toString errors can otherwise be swallowed:
+        console.warn("Error running console.toString():", e);
+        throw e;
+      }
+    },
+
+    submit: function (options) {
+      // FIXME: friendpaste is broken for this
+      // (and other pastebin sites aren't really Browser-accessible)
+      return util.Deferred(function (def) {
+        options = options || {};
+        var site = options.site || TogetherJS.config.get("pasteSite") || "https://www.friendpaste.com/";
+        var req = new XMLHttpRequest();
+        req.open("POST", site);
+        req.setRequestHeader("Content-Type", "application/json");
+        req.send(JSON.stringify({
+          "title": options.title || "TogetherJS log file",
+          "snippet": this.toString(),
+          "language": "text"
+        }));
+        req.onreadystatechange = function () {
+          if (req.readyState === 4) {
+            var data = JSON.parse(req.responseText);
+          }
+        };
+      });
+    }
+
+  });
+
+  function rpad(s, len, pad) {
+    s = s + "";
+    pad = pad || " ";
+    while (s.length < len) {
+      s += pad;
+    }
+    return s;
+  }
+
+  function lpad(s, len, pad) {
+    s = s + "";
+    pad = pad || " ";
+    while (s.length < len) {
+      s = pad + s;
+    }
+    return s;
+  }
+
+  function lpadLines(s, len, pad) {
+    var i;
+    s = s + "";
+    if (s.indexOf("\n") == -1) {
+      return s;
+    }
+    pad = pad || " ";
+    var fullPad = "";
+    for (i=0; i<len; i++) {
+      fullPad += pad;
+    }
+    s = s.split(/\n/g);
+    for (i=1; i<s.length; i++) {
+      s[i] = fullPad + s[i];
+    }
+    return s.join("\n");
+  }
+
+
+
+  // This is a factory that creates `Console.prototype.debug`, `.error` etc:
+  function logFunction(name, level) {
+    return function () {
+      this.write.apply(this, [level].concat(Array.prototype.slice.call(arguments)));
+    };
+  }
+
+  util.forEachAttr(Console.prototype.levels, function (value, name) {
+    Console.prototype[name] = logFunction(name, value);
+    Console.prototype.maxLevel = Math.max(Console.prototype.maxLevel, value);
+  });
+
+  util.forEachAttr(Console.prototype.levels, function (value, name) {
+    Console.prototype.levelNames[value] = name;
+  });
+
+  var appConsole = Console();
+
+  appConsole.ConsoleClass = Console;
+
+  return appConsole;
+});
diff --git a/v3/js/togetherjs/togetherjs/cursor.js b/v3/js/togetherjs/togetherjs/cursor.js
new file mode 100644
index 000000000..0ec5bb563
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/cursor.js
@@ -0,0 +1,539 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Cursor viewing support
+
+define(["jquery", "ui", "util", "session", "elementFinder", "tinycolor", "eventMaker", "peers", "templating"], function ($, ui, util, session, elementFinder, tinycolor, eventMaker, peers, templating) {
+  var assert = util.assert;
+  var cursor = util.Module("cursor");
+
+  var FOREGROUND_COLORS = ["#111", "#eee"];
+  var CURSOR_HEIGHT = 50;
+  var CURSOR_ANGLE = (35 / 180) * Math.PI;
+  var CURSOR_WIDTH = Math.ceil(Math.sin(CURSOR_ANGLE) * CURSOR_HEIGHT);
+  // Number of milliseconds after page load in which a scroll-update
+  // related hello-back message will be processed:
+  var SCROLL_UPDATE_CUTOFF = 2000;
+
+  session.hub.on("cursor-update", function (msg) {
+    if (msg.sameUrl) {
+      Cursor.getClient(msg.clientId).updatePosition(msg);
+    } else {
+      // FIXME: This should be caught even before the cursor-update message,
+      // when the peer goes to another URL
+      Cursor.getClient(msg.clientId).hideOtherUrl();
+    }
+  });
+
+  // FIXME: should check for a peer leaving and remove the cursor object
+  var Cursor = util.Class({
+
+    constructor: function (clientId) {
+      this.clientId = clientId;
+      this.element = templating.clone("cursor");
+      this.elementClass = "togetherjs-scrolled-normal";
+      this.element.addClass(this.elementClass);
+      this.updatePeer(peers.getPeer(clientId));
+      this.lastTop = this.lastLeft = null;
+      $(document.body).append(this.element);
+      this.element.animateCursorEntry();
+      this.keydownTimeout = null;
+      this.clearKeydown = this.clearKeydown.bind(this);
+      this.atOtherUrl = false;
+    },
+
+    // How long after receiving a setKeydown call that we should show the
+    // user typing.  This should be more than MIN_KEYDOWN_TIME:
+    KEYDOWN_WAIT_TIME: 2000,
+
+    updatePeer: function (peer) {
+      // FIXME: can I use peer.setElement()?
+      this.element.css({color: peer.color});
+      var img = this.element.find("img.togetherjs-cursor-img");
+      img.attr("src", makeCursor(peer.color));
+      var name = this.element.find(".togetherjs-cursor-name");
+      var nameContainer = this.element.find(".togetherjs-cursor-container");
+      assert(name.length);
+      name.text(peer.name);
+      nameContainer.css({
+        backgroundColor: peer.color,
+        color: tinycolor.mostReadable(peer.color, FOREGROUND_COLORS)
+      });
+      var path = this.element.find("svg path");
+      path.attr("fill", peer.color);
+      // FIXME: should I just remove the element?
+      if (peer.status != "live") {
+        //this.element.hide();
+        this.element.find("svg").animate({
+          opacity: 0
+        }, 350);
+        this.element.find(".togetherjs-cursor-container").animate({
+                width: 34,
+                height: 20,
+                padding: 12,
+                margin: 0
+            }, 200).animate({
+                width: 0,
+                height: 0,
+                padding: 0,
+                opacity: 0
+                }, 200);
+      } else {
+        //this.element.show();
+        this.element.animate({
+          opacity:0.3
+        }).animate({
+          opacity:1
+        });
+      }
+    },
+
+    setClass: function (name) {
+      if (name != this.elementClass) {
+        this.element.removeClass(this.elementClass).addClass(name);
+        this.elementClass = name;
+      }
+    },
+
+    updatePosition: function (pos) {
+      var top, left;
+      if (this.atOtherUrl) {
+        this.element.show();
+        this.atOtherUrl = false;
+      }
+      if (pos.element) {
+        var target = $(elementFinder.findElement(pos.element));
+        var offset = target.offset();
+        top = offset.top + pos.offsetY;
+        left = offset.left + pos.offsetX;
+      } else {
+        // No anchor, just an absolute position
+        top = pos.top;
+        left = pos.left;
+      }
+      // These are saved for use by .refresh():
+      this.lastTop = top;
+      this.lastLeft = left;
+      this.setPosition(top, left);
+    },
+
+    hideOtherUrl: function () {
+      if (this.atOtherUrl) {
+        return;
+      }
+      this.atOtherUrl = true;
+      // FIXME: should show away status better:
+      this.element.hide();
+    },
+
+    // place Cursor rotate function down here FIXME: this doesnt do anything anymore.  This is in the CSS as an animation
+    rotateCursorDown: function(){
+      var e = $(this.element).find('svg');
+        e.animate({borderSpacing: -150, opacity: 1}, {
+        step: function(now, fx) {
+          if (fx.prop == "borderSpacing") {
+            e.css('-webkit-transform', 'rotate('+now+'deg)')
+              .css('-moz-transform', 'rotate('+now+'deg)')
+              .css('-ms-transform', 'rotate('+now+'deg)')
+              .css('-o-transform', 'rotate('+now+'deg)')
+              .css('transform', 'rotate('+now+'deg)');
+          } else {
+            e.css(fx.prop, now);
+          }
+        },
+        duration: 500
+      }, 'linear').promise().then(function () {
+        e.css('-webkit-transform', '')
+          .css('-moz-transform', '')
+          .css('-ms-transform', '')
+          .css('-o-transform', '')
+          .css('transform', '')
+          .css("opacity", "");
+      });
+    },
+
+    setPosition: function (top, left) {
+      var wTop = $(window).scrollTop();
+      var height = $(window).height();
+
+      if (top < wTop) {
+        // FIXME: this is a totally arbitrary number, but is meant to be big enough
+        // to keep the cursor name from being off the top of the screen.
+        top = 25;
+        this.setClass("togetherjs-scrolled-above");
+      } else if (top > wTop + height - CURSOR_HEIGHT) {
+        top = height - CURSOR_HEIGHT - 5;
+        this.setClass("togetherjs-scrolled-below");
+      } else {
+        this.setClass("togetherjs-scrolled-normal");
+      }
+      this.element.css({
+        top: top,
+        left: left
+      });
+    },
+
+    refresh: function () {
+      if (this.lastTop !== null) {
+        this.setPosition(this.lastTop, this.lastLeft);
+      }
+    },
+
+    setKeydown: function () {
+      if (this.keydownTimeout) {
+        clearTimeout(this.keydownTimeout);
+      } else {
+        this.element.find(".togetherjs-cursor-typing").show().animateKeyboard();
+      }
+      this.keydownTimeout = setTimeout(this.clearKeydown, this.KEYDOWN_WAIT_TIME);
+    },
+
+    clearKeydown: function () {
+      this.keydownTimeout = null;
+      this.element.find(".togetherjs-cursor-typing").hide().stopKeyboardAnimation();
+    },
+
+    _destroy: function () {
+      this.element.remove();
+      this.element = null;
+    }
+  });
+
+  Cursor._cursors = {};
+
+  cursor.getClient = Cursor.getClient = function (clientId) {
+    var c = Cursor._cursors[clientId];
+    if (! c) {
+      c = Cursor._cursors[clientId] = Cursor(clientId);
+    }
+    return c;
+  };
+
+  Cursor.forEach = function (callback, context) {
+    context = context || null;
+    for (var a in Cursor._cursors) {
+      if (Cursor._cursors.hasOwnProperty(a)) {
+        callback.call(context, Cursor._cursors[a], a);
+      }
+    }
+  };
+
+  Cursor.destroy = function (clientId) {
+    Cursor._cursors[clientId]._destroy();
+    delete Cursor._cursors[clientId];
+  };
+
+  peers.on("new-peer identity-updated status-updated", function (peer) {
+    var c = Cursor.getClient(peer.id);
+    c.updatePeer(peer);
+  });
+
+  var lastTime = 0;
+  var MIN_TIME = 100;
+  var lastPosX = -1;
+  var lastPosY = -1;
+  var lastMessage = null;
+  function mousemove(event) {
+    var now = Date.now();
+    if (now - lastTime < MIN_TIME) {
+      return;
+    }
+    lastTime = now;
+    var pageX = event.pageX;
+    var pageY = event.pageY;
+    if (Math.abs(lastPosX - pageX) < 3 && Math.abs(lastPosY - pageY) < 3) {
+      // Not a substantial enough change
+      return;
+    }
+    lastPosX = pageX;
+    lastPosY = pageY;
+    var target = event.target;
+    var parent = $(target).closest(".togetherjs-window, .togetherjs-popup, #togetherjs-dock");
+    if (parent.length) {
+      target = parent[0];
+    } else if (elementFinder.ignoreElement(target)) {
+      target = null;
+    }
+    if ((! target) || target == document.documentElement || target == document.body) {
+      lastMessage = {
+        type: "cursor-update",
+        top: pageY,
+        left: pageX
+      };
+      session.send(lastMessage);
+      return;
+    }
+    target = $(target);
+    var offset = target.offset();
+    if (! offset) {
+      // FIXME: this really is walkabout.js's problem to fire events on the
+      // document instead of a specific element
+      console.warn("Could not get offset of element:", target[0]);
+      return;
+    }
+    var offsetX = pageX - offset.left;
+    var offsetY = pageY - offset.top;
+    lastMessage = {
+      type: "cursor-update",
+      element: elementFinder.elementLocation(target),
+      offsetX: Math.floor(offsetX),
+      offsetY: Math.floor(offsetY)
+    };
+    session.send(lastMessage);
+  }
+
+  function makeCursor(color) {
+    var canvas = $("<canvas></canvas>");
+    canvas.attr("height", CURSOR_HEIGHT);
+    canvas.attr("width", CURSOR_WIDTH);
+    var context = canvas[0].getContext('2d');
+    context.fillStyle = color;
+    context.moveTo(0, 0);
+    context.beginPath();
+    context.lineTo(0, CURSOR_HEIGHT/1.2);
+    context.lineTo(Math.sin(CURSOR_ANGLE/2) * CURSOR_HEIGHT / 1.5,
+                   Math.cos(CURSOR_ANGLE/2) * CURSOR_HEIGHT / 1.5);
+    context.lineTo(Math.sin(CURSOR_ANGLE) * CURSOR_HEIGHT / 1.2,
+                   Math.cos(CURSOR_ANGLE) * CURSOR_HEIGHT / 1.2);
+    context.lineTo(0, 0);
+    context.shadowColor = 'rgba(0,0,0,0.3)';
+    context.shadowBlur = 2;
+    context.shadowOffsetX = 1;
+    context.shadowOffsetY = 2;
+	context.strokeStyle = "#ffffff";
+	context.stroke();
+    context.fill();
+    return canvas[0].toDataURL("image/png");
+  }
+
+  var scrollTimeout = null;
+  var scrollTimeoutSet = 0;
+  var SCROLL_DELAY_TIMEOUT = 75;
+  var SCROLL_DELAY_LIMIT = 300;
+
+  function scroll() {
+    var now = Date.now();
+    if (scrollTimeout) {
+      if (now - scrollTimeoutSet < SCROLL_DELAY_LIMIT) {
+        clearTimeout(scrollTimeout);
+      } else {
+        // Just let it progress anyway
+        return;
+      }
+    }
+    scrollTimeout = setTimeout(_scrollRefresh, SCROLL_DELAY_TIMEOUT);
+    if (! scrollTimeoutSet) {
+      scrollTimeoutSet = now;
+    }
+  }
+
+  var lastScrollMessage = null;
+  function _scrollRefresh() {
+    scrollTimeout = null;
+    scrollTimeoutSet = 0;
+    Cursor.forEach(function (c) {
+      c.refresh();
+    });
+    lastScrollMessage = {
+      type: "scroll-update",
+      position: elementFinder.elementByPixel($(window).scrollTop())
+    };
+    session.send(lastScrollMessage);
+  }
+
+  // FIXME: do the same thing for cursor position?  And give up on the
+  // ad hoc update-on-hello?
+  session.on("prepare-hello", function (helloMessage) {
+    if (lastScrollMessage) {
+      helloMessage.scrollPosition = lastScrollMessage.position;
+    }
+  });
+
+  session.hub.on("scroll-update", function (msg) {
+    msg.peer.scrollPosition = msg.position;
+    if (msg.peer.following) {
+      msg.peer.view.scrollTo();
+    }
+  });
+
+  // In case there are multiple peers, we track that we've accepted one of their
+  // hello-based scroll updates, just so we don't bounce around (we don't intelligently
+  // choose which one to use, just the first that comes in)
+  var acceptedScrollUpdate = false;
+  session.hub.on("hello-back hello", function (msg) {
+    if (msg.type == "hello") {
+      // Once a hello comes in, a bunch of hello-backs not intended for us will also
+      // come in, and we should ignore them
+      acceptedScrollUpdate = true;
+    }
+    if (! msg.scrollPosition) {
+      return;
+    }
+    msg.peer.scrollPosition = msg.scrollPosition;
+    if ((! acceptedScrollUpdate) &&
+        msg.sameUrl &&
+        Date.now() - session.timeHelloSent < SCROLL_UPDATE_CUTOFF) {
+      acceptedScrollUpdate = true;
+      msg.peer.view.scrollTo();
+    }
+  });
+
+  session.on("ui-ready", function () {
+    $(document).mousemove(mousemove);
+    document.addEventListener("click", documentClick, true);
+    document.addEventListener("keydown", documentKeydown, true);
+    $(window).scroll(scroll);
+    scroll();
+  });
+
+  session.on("close", function () {
+    Cursor.forEach(function (c, clientId) {
+      Cursor.destroy(clientId);
+    });
+    $(document).unbind("mousemove", mousemove);
+    document.removeEventListener("click", documentClick, true);
+    document.removeEventListener("keydown", documentKeydown, true);
+    $(window).unbind("scroll", scroll);
+  });
+
+  session.hub.on("hello", function (msg) {
+    // Immediately get our cursor onto this new person's screen:
+    if (lastMessage) {
+      session.send(lastMessage);
+    }
+    if (lastScrollMessage) {
+      session.send(lastScrollMessage);
+    }
+  });
+
+  function documentClick(event) {
+    if (event.togetherjsInternal) {
+      // This is an artificial internal event
+      return;
+    }
+    // FIXME: this might just be my imagination, but somehow I just
+    // really don't want to do anything at this stage of the event
+    // handling (since I'm catching every click), and I'll just do
+    // something real soon:
+    setTimeout(function () {
+      if (! TogetherJS.running) {
+        // This can end up running right after TogetherJS has been closed, often
+        // because TogetherJS was closed with a click...
+        return;
+      }
+      var element = event.target;
+      if (element == document.documentElement) {
+        // For some reason clicking on <body> gives the <html> element here
+        element = document.body;
+      }
+      if (elementFinder.ignoreElement(element)) {
+        return;
+      }
+      //Prevent click events on video objects to avoid conflicts with
+      //togetherjs's own video events
+      if (element.nodeName.toLowerCase() === 'video'){
+        return;
+      }
+
+      var dontShowClicks = TogetherJS.config.get("dontShowClicks");
+      var cloneClicks = TogetherJS.config.get("cloneClicks");
+      // If you dont want to clone the click for this element
+      // and you dont want to show the click for this element or you dont want to show any clicks
+      // then return to avoid sending a useless click
+      if ((! util.matchElement(element, cloneClicks)) && util.matchElement(element, dontShowClicks)) {
+        return;
+      }
+      var location = elementFinder.elementLocation(element);
+      var offset = $(element).offset();
+      var offsetX = event.pageX - offset.left;
+      var offsetY = event.pageY - offset.top;
+      session.send({
+        type: "cursor-click",
+        element: location,
+        offsetX: offsetX,
+        offsetY: offsetY
+      });
+      if (util.matchElement(element, dontShowClicks)) {
+        return;
+      }
+      displayClick({top: event.pageY, left: event.pageX}, peers.Self.color);
+    });
+  }
+
+  var CLICK_TRANSITION_TIME = 3000;
+
+  session.hub.on("cursor-click", function (pos) {
+    // When the click is calculated isn't always the same as how the
+    // last cursor update was calculated, so we force the cursor to
+    // the last location during a click:
+    if (! pos.sameUrl) {
+      // FIXME: if we *could have* done a local click, but we follow along
+      // later, we'll be in different states if that click was important.
+      // Mostly click cloning just won't work.
+      return;
+    }
+    Cursor.getClient(pos.clientId).updatePosition(pos);
+    var target = $(elementFinder.findElement(pos.element));
+    var offset = target.offset();
+    var top = offset.top + pos.offsetY;
+    var left = offset.left + pos.offsetX;
+    var cloneClicks = TogetherJS.config.get("cloneClicks");
+    if (util.matchElement(target, cloneClicks)) {
+      eventMaker.performClick(target);
+    }
+    var dontShowClicks = TogetherJS.config.get("dontShowClicks");
+    if (util.matchElement(target, dontShowClicks)) {
+      return;
+    }
+    displayClick({top: top, left: left}, pos.peer.color);
+  });
+
+  function displayClick(pos, color) {
+    // FIXME: should we hide the local click if no one else is going to see it?
+    // That means tracking who might be able to see our screen.
+    var element = templating.clone("click");
+    $(document.body).append(element);
+    element.css({
+      top: pos.top,
+      left: pos.left,
+      borderColor: color
+    });
+    setTimeout(function () {
+      element.addClass("togetherjs-clicking");
+    }, 100);
+    setTimeout(function () {
+      element.remove();
+    }, CLICK_TRANSITION_TIME);
+  }
+
+  var lastKeydown = 0;
+  var MIN_KEYDOWN_TIME = 500;
+
+  function documentKeydown(event) {
+    setTimeout(function () {
+      var now = Date.now();
+      if (now - lastKeydown < MIN_KEYDOWN_TIME) {
+        return;
+      }
+      lastKeydown = now;
+      // FIXME: is event.target interesting here?  That is, *what* the
+      // user is typing into, not just that the user is typing?  Also
+      // I'm assuming we don't care if the user it typing into a
+      // togetherjs-related field, since chat activity is as interesting
+      // as any other activity.
+      session.send({type: "keydown"});
+    });
+  }
+
+  session.hub.on("keydown", function (msg) {
+    // FIXME: when the cursor is hidden there's nothing to show with setKeydown().
+    var cursor = Cursor.getClient(msg.clientId);
+    cursor.setKeydown();
+  });
+
+  util.testExpose({Cursor: Cursor});
+
+  return cursor;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/elementFinder.js b/v3/js/togetherjs/togetherjs/elementFinder.js
new file mode 100644
index 000000000..ec6fcb9de
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/elementFinder.js
@@ -0,0 +1,254 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["util", "jquery"], function (util, $) {
+  var elementFinder = util.Module("elementFinder");
+  var assert = util.assert;
+
+  elementFinder.ignoreElement = function ignoreElement(el) {
+    if (el instanceof $) {
+      el = el[0];
+    }
+    while (el) {
+      if ($(el).hasClass("togetherjs")) {
+        return true;
+      }
+      el = el.parentNode;
+    }
+    return false;
+  };
+
+  elementFinder.elementLocation = function elementLocation(el) {
+    assert(el !== null, "Got null element");
+    if (el instanceof $) {
+      // a jQuery element
+      el = el[0];
+    }
+    if (el[0] && el.attr && el[0].nodeType == 1) {
+      // Or a jQuery element not made by us
+      el = el[0];
+    }
+    if (el.id) {
+      return "#" + el.id;
+    }
+    if (el.tagName == "BODY") {
+      return "body";
+    }
+    if (el.tagName == "HEAD") {
+      return "head";
+    }
+    if (el === document) {
+      return "document";
+    }
+    var parent = el.parentNode;
+    if ((! parent) || parent == el) {
+      console.warn("elementLocation(", el, ") has null parent");
+      throw new Error("No locatable parent found");
+    }
+    var parentLocation = elementLocation(parent);
+    var children = parent.childNodes;
+    var _len = children.length;
+    var index = 0;
+    for (var i=0; i<_len; i++) {
+      if (children[i] == el) {
+        break;
+      }
+      if (children[i].nodeType == document.ELEMENT_NODE) {
+        if (children[i].className.indexOf("togetherjs") != -1) {
+          // Don't count our UI
+          continue;
+        }
+        // Don't count text or comments
+        index++;
+      }
+    }
+    return parentLocation + ":nth-child(" + (index+1) + ")";
+  };
+
+  elementFinder.CannotFind = util.Class({
+    constructor: function CannotFind(location, reason, context) {
+      this.prefix = "";
+      this.location = location;
+      this.reason = reason;
+      this.context = context;
+    },
+    toString: function () {
+      var loc;
+      try {
+        loc = elementFinder.elementLocation(this.context);
+      } catch (e) {
+        loc = this.context;
+      }
+      return (
+        "[CannotFind " + this.prefix +
+          "(" + this.location + "): " +
+          this.reason + " in " +
+          loc + "]");
+    }
+  });
+
+  elementFinder.findElement = function findElement(loc, container) {
+    // FIXME: should this all just be done with document.querySelector()?
+    // But no!  We can't ignore togetherjs elements with querySelector.
+    // But maybe!  We *could* make togetherjs elements less obtrusive?
+    container = container || document;
+    var el, rest;
+    if (loc === "body") {
+      return document.body;
+    } else if (loc === "head") {
+      return document.head;
+    } else if (loc === "document") {
+      return document;
+    } else if (loc.indexOf("body") === 0) {
+      el = document.body;
+      try {
+        return findElement(loc.substr(("body").length), el);
+      } catch (e) {
+        if (e instanceof elementFinder.CannotFind) {
+          e.prefix = "body" + e.prefix;
+        }
+        throw e;
+      }
+    } else if (loc.indexOf("head") === 0) {
+      el = document.head;
+      try {
+        return findElement(loc.substr(("head").length), el);
+      } catch (e) {
+        if (e instanceof elementFinder.CannotFind) {
+          e.prefix = "head" + e.prefix;
+        }
+        throw e;
+      }
+    } else if (loc.indexOf("#") === 0) {
+      var id;
+      loc = loc.substr(1);
+      if (loc.indexOf(":") === -1) {
+        id = loc;
+        rest = "";
+      } else {
+        id = loc.substr(0, loc.indexOf(":"));
+        rest = loc.substr(loc.indexOf(":"));
+      }
+      el = document.getElementById(id);
+      if (! el) {
+        throw elementFinder.CannotFind("#" + id, "No element by that id", container);
+      }
+      if (rest) {
+        try {
+          return findElement(rest, el);
+        } catch (e) {
+          if (e instanceof elementFinder.CannotFind) {
+            e.prefix = "#" + id + e.prefix;
+          }
+          throw e;
+        }
+      } else {
+        return el;
+      }
+    } else if (loc.indexOf(":nth-child(") === 0) {
+      loc = loc.substr((":nth-child(").length);
+      if (loc.indexOf(")") == -1) {
+        throw "Invalid location, missing ): " + loc;
+      }
+      var num = loc.substr(0, loc.indexOf(")"));
+      num = parseInt(num, 10);
+      var count = num;
+      loc = loc.substr(loc.indexOf(")") + 1);
+      var children = container.childNodes;
+      el = null;
+      for (var i=0; i<children.length; i++) {
+        var child = children[i];
+        if (child.nodeType == document.ELEMENT_NODE) {
+          if (child.className.indexOf("togetherjs") != -1) {
+            continue;
+          }
+          count--;
+          if (count === 0) {
+            // this is the element
+            el = child;
+            break;
+          }
+        }
+      }
+      if (! el) {
+        throw elementFinder.CannotFind(":nth-child(" + num + ")", "container only has " + (num - count) + " elements", container);
+      }
+      if (loc) {
+        try {
+          return elementFinder.findElement(loc, el);
+        } catch (e) {
+          if (e instanceof elementFinder.CannotFind) {
+            e.prefix = ":nth-child(" + num + ")" + e.prefix;
+          }
+          throw e;
+        }
+      } else {
+        return el;
+      }
+    } else {
+      throw elementFinder.CannotFind(loc, "Malformed location", container);
+    }
+  };
+
+  elementFinder.elementByPixel = function (height) {
+    /* Returns {location: "...", offset: pixels}
+
+       To get the pixel position back, you'd do:
+         $(location).offset().top + offset
+     */
+    function search(start, height) {
+      var last = null;
+      var children = start.children();
+      children.each(function () {
+        var el = $(this);
+        if (el.hasClass("togetherjs") || el.css("position") == "fixed" || ! el.is(":visible")) {
+          return;
+        }
+        if (el.offset().top > height) {
+          return false;
+        }
+        last = el;
+      });
+      if ((! children.length) || (! last)) {
+        // There are no children, or only inapplicable children
+        return {
+          location: elementFinder.elementLocation(start[0]),
+          offset: height - start.offset().top,
+          absoluteTop: height,
+          documentHeight: $(document).height()
+        };
+      }
+      return search(last, height);
+    }
+    return search($(document.body), height);
+  };
+
+  elementFinder.pixelForPosition = function (position) {
+    /* Inverse of elementFinder.elementByPixel */
+    if (position.location == "body") {
+      return position.offset;
+    }
+    var el;
+    try {
+      el = elementFinder.findElement(position.location);
+    } catch (e) {
+      if (e instanceof elementFinder.CannotFind && position.absoluteTop) {
+        // We don't trust absoluteTop to be quite right locally, so we adjust
+        // for the total document height differences:
+        var percent = position.absoluteTop / position.documentHeight;
+        return $(document).height() * percent;
+      }
+      throw e;
+    }
+    var top = $(el).offset().top;
+    // FIXME: maybe here we should test for sanity, like if an element is
+    // hidden.  We can use position.absoluteTop to get a sense of where the
+    // element roughly should be.  If the sanity check failed we'd use
+    // absoluteTop
+    return top + position.offset;
+  };
+
+  return elementFinder;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/eventMaker.js b/v3/js/togetherjs/togetherjs/eventMaker.js
new file mode 100644
index 000000000..fed95831a
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/eventMaker.js
@@ -0,0 +1,56 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery", "util"], function ($, util) {
+  var eventMaker = util.Module("eventMaker");
+
+  eventMaker.performClick = function (target) {
+    // FIXME: should accept other parameters, like Ctrl/Alt/etc
+    var event = document.createEvent("MouseEvents");
+    event.initMouseEvent(
+      "click", // type
+      true, // canBubble
+      true, // cancelable
+      window, // view
+      0, // detail
+      0, // screenX
+      0, // screenY
+      0, // clientX
+      0, // clientY
+      false, // ctrlKey
+      false, // altKey
+      false, // shiftKey
+      false, // metaKey
+      0, // button
+      null // relatedTarget
+    );
+    // FIXME: I'm not sure this custom attribute always propagates?
+    // seems okay in Firefox/Chrome, but I've had problems with
+    // setting attributes on keyboard events in the past.
+    event.togetherjsInternal = true;
+    target = $(target)[0];
+    var cancelled = target.dispatchEvent(event);
+    if (cancelled) {
+      return;
+    }
+    if (target.tagName == "A") {
+      var href = target.href;
+      if (href) {
+        location.href = href;
+        return;
+      }
+    }
+    // FIXME: should do button clicks (like a form submit)
+    // FIXME: should run .onclick() as well
+  };
+
+  eventMaker.fireChange = function (target) {
+    target = $(target)[0];
+    var event = document.createEvent("HTMLEvents");
+    event.initEvent("change", true, true);
+    target.dispatchEvent(event);
+  };
+
+  return eventMaker;
+});
diff --git a/v3/js/togetherjs/togetherjs/fonts/OpenSans-Bold.ttf b/v3/js/togetherjs/togetherjs/fonts/OpenSans-Bold.ttf
new file mode 100644
index 000000000..fd79d43be
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/fonts/OpenSans-Bold.ttf differ
diff --git a/v3/js/togetherjs/togetherjs/fonts/OpenSans-Light.ttf b/v3/js/togetherjs/togetherjs/fonts/OpenSans-Light.ttf
new file mode 100644
index 000000000..0d381897d
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/fonts/OpenSans-Light.ttf differ
diff --git a/v3/js/togetherjs/togetherjs/fonts/OpenSans-Regular.ttf b/v3/js/togetherjs/togetherjs/fonts/OpenSans-Regular.ttf
new file mode 100644
index 000000000..db433349b
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/fonts/OpenSans-Regular.ttf differ
diff --git a/v3/js/togetherjs/togetherjs/forms.js b/v3/js/togetherjs/togetherjs/forms.js
new file mode 100644
index 000000000..c9203db05
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/forms.js
@@ -0,0 +1,851 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery", "util", "session", "elementFinder", "eventMaker", "templating", "ot"], function ($, util, session, elementFinder, eventMaker, templating, ot) {
+  var forms = util.Module("forms");
+  var assert = util.assert;
+
+  // This is how much larger the focus element is than the element it surrounds
+  // (this is padding on each side)
+  var FOCUS_BUFFER = 5;
+
+  var inRemoteUpdate = false;
+
+  function suppressSync(element) {
+    var ignoreForms = TogetherJS.config.get("ignoreForms");
+    if (ignoreForms === true) {
+      return true;
+    }
+    else {
+      return $(element).is(ignoreForms.join(",")); 
+    }
+  }
+
+  function maybeChange(event) {
+    // Called when we get an event that may or may not indicate a real change
+    // (like keyup in a textarea)
+    var tag = event.target.tagName;
+    if (tag == "TEXTAREA" || tag == "INPUT") {
+      change(event);
+    }
+  }
+
+  function change(event) {
+    sendData({
+      element: event.target,
+      value: getValue(event.target)
+    });
+  }
+
+  function sendData(attrs) {
+    var el = $(attrs.element);
+    assert(el);
+    var tracker = attrs.tracker;
+    var value = attrs.value;
+    if (inRemoteUpdate) {
+      return;
+    }
+    if (elementFinder.ignoreElement(el) ||
+        (elementTracked(el) && !tracker) ||
+        suppressSync(el)) {
+      return;
+    }
+    var location = elementFinder.elementLocation(el);
+    var msg = {
+      type: "form-update",
+      element: location
+    };
+    if (isText(el) || tracker) {
+      var history = el.data("togetherjsHistory");
+      if (history) {
+        if (history.current == value) {
+          return;
+        }
+        var delta = ot.TextReplace.fromChange(history.current, value);
+        assert(delta);
+        history.add(delta);
+        maybeSendUpdate(msg.element, history, tracker);
+        return;
+      } else {
+        msg.value = value;
+        msg.basis = 1;
+        el.data("togetherjsHistory", ot.SimpleHistory(session.clientId, value, 1));
+      }
+    } else {
+      msg.value = value;
+    }
+    session.send(msg);
+  }
+
+  function isCheckable(el) {
+    el = $(el);
+    var type = (el.prop("type") || "text").toLowerCase();
+    if (el.prop("tagName") == "INPUT" && ["radio", "checkbox"].indexOf(type) != -1) {
+      return true;
+    }
+    return false;
+  }
+
+  var editTrackers = {};
+  var liveTrackers = [];
+
+  TogetherJS.addTracker = function (TrackerClass, skipSetInit) {
+    assert(typeof TrackerClass === "function", "You must pass in a class");
+    assert(typeof TrackerClass.prototype.trackerName === "string",
+           "Needs a .prototype.trackerName string");
+    // Test for required instance methods.
+    "destroy update init makeInit tracked".split(/ /).forEach(function(m) {
+      assert(typeof TrackerClass.prototype[m] === "function",
+             "Missing required tracker method: "+m);
+    });
+    // Test for required class methods.
+    "scan tracked".split(/ /).forEach(function(m) {
+      assert(typeof TrackerClass[m] === "function",
+             "Missing required tracker class method: "+m);
+    });
+    editTrackers[TrackerClass.prototype.trackerName] = TrackerClass;
+    if (!skipSetInit) {
+      setInit();
+    }
+  };
+
+  var AceEditor = util.Class({
+
+    trackerName: "AceEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert($(this.element).hasClass("ace_editor"));
+      this._change = this._change.bind(this);
+      this._editor().document.on("change", this._change);
+    },
+
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+
+    destroy: function (el) {
+      this._editor().document.removeListener("change", this._change);
+    },
+
+    update: function (msg) {
+      this._editor().document.setValue(msg.value);
+    },
+
+    init: function (update, msg) {
+      this.update(update);
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this._editor().document.getValue()
+      };
+    },
+
+    _editor: function () {
+      return this.element.env;
+    },
+
+    _change: function (e) {
+      // FIXME: I should have an internal .send() function that automatically
+      // asserts !inRemoteUpdate, among other things
+      if (inRemoteUpdate) {
+        return;
+      }
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    getContent: function() {
+      return this._editor().document.getValue();
+    }
+  });
+
+  AceEditor.scan = function () {
+    return $(".ace_editor");
+  };
+
+  AceEditor.tracked = function (el) {
+    return !! $(el).closest(".ace_editor").length;
+  };
+
+  TogetherJS.addTracker(AceEditor, true /* skip setInit */);
+
+  var CodeMirrorEditor = util.Class({
+    trackerName: "CodeMirrorEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert(this.element.CodeMirror);
+      this._change = this._change.bind(this);
+      this._editor().on("change", this._change);
+    },
+
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+
+    destroy: function (el) {
+      this._editor().off("change", this._change);
+    },
+
+    update: function (msg) {
+      this._editor().setValue(msg.value);
+    },
+
+    init: function (msg) {
+      if (msg.value) {
+        this.update(msg);
+      }
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this._editor().getValue()
+      };
+    },
+
+    _change: function (editor, change) {
+      if (inRemoteUpdate) {
+        return;
+      }
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    _editor: function () {
+      return this.element.CodeMirror;
+    },
+
+    getContent: function() {
+      return this._editor().getValue();
+    }
+  });
+
+  CodeMirrorEditor.scan = function () {
+    var result = [];
+    var els = document.body.getElementsByTagName("*");
+    var _len = els.length;
+    for (var i=0; i<_len; i++) {
+      var el = els[i];
+      if (el.CodeMirror) {
+        result.push(el);
+      }
+    }
+    return $(result);
+  };
+
+  CodeMirrorEditor.tracked = function (el) {
+    el = $(el)[0];
+    while (el) {
+      if (el.CodeMirror) {
+        return true;
+      }
+      el = el.parentNode;
+    }
+    return false;
+  };
+
+  TogetherJS.addTracker(CodeMirrorEditor, true /* skip setInit */);
+
+  var CKEditor = util.Class({
+    trackerName: "CKEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert(CKEDITOR);
+      assert(CKEDITOR.dom.element.get(this.element));
+      this._change = this._change.bind(this);
+      // FIXME: change event is available since CKEditor 4.2
+      this._editor().on("change", this._change);
+    },
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+    destroy: function (el) {
+      this._editor().removeListener("change", this._change);
+    },
+
+    update: function (msg) {
+      //FIXME: use setHtml instead of setData to avoid frame reloading overhead
+      this._editor().editable().setHtml(msg.value);
+    },
+
+    init: function (update, msg) {
+      this.update(update);
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this.getContent()
+      };
+    },
+
+    _change: function (e) {
+      if (inRemoteUpdate) {
+        return;
+      }
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    _editor: function () {
+      return CKEDITOR.dom.element.get(this.element).getEditor();
+    },
+    
+    getContent: function () {
+      return this._editor().getData();
+    }
+  });
+
+  CKEditor.scan = function () {
+    var result = [];
+    if (typeof CKEDITOR == "undefined") {
+      return;
+    }
+    var editorInstance;
+    for (var instanceIdentifier in CKEDITOR.instances) {
+      editorInstance = document.getElementById(instanceIdentifier) || document.getElementsByName(instanceIdentifier)[0];
+      if (editorInstance) {
+        result.push(editorInstance);
+      }
+    }
+    return $(result);
+  };
+
+  CKEditor.tracked = function (el) {
+    if (typeof CKEDITOR == "undefined") {
+      return false;
+    }
+    el = $(el)[0];
+    return !! (CKEDITOR.dom.element.get(el) && CKEDITOR.dom.element.get(el).getEditor());
+  };
+
+  TogetherJS.addTracker(CKEditor, true /* skip setInit */);
+
+  //////////////////// BEGINNING OF TINYMCE ////////////////////////
+  var tinymceEditor = util.Class({
+    trackerName: "tinymceEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert($(this.element).attr('id').indexOf('mce_') != -1);
+      this._change = this._change.bind(this);
+      this._editor().on("input keyup cut paste change", this._change);
+    },
+
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+
+    destroy: function (el) {
+      this._editor().destory();
+    },
+
+    update: function (msg) {
+      this._editor().setContent(msg.value, {format: 'raw'});
+    },
+
+    init: function (update, msg) {
+      this.update(update);
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this.getContent()
+      };
+    },
+
+    _change: function (e) {
+      if (inRemoteUpdate) {
+        return;
+      }  
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    _editor: function () {
+      if (typeof tinymce == "undefined") {
+        return;
+      }
+      return $(this.element).data("tinyEditor");
+    },
+    
+    getContent: function () {
+      return this._editor().getContent();
+    }
+  });
+
+  tinymceEditor.scan = function () {
+    //scan all the elements that contain tinyMCE editors
+    if (typeof tinymce == "undefined") {
+      return;
+    }
+    var result = [];
+    $(window.tinymce.editors).each(function (i, ed) {
+      result.push($('#'+ed.id));
+      //its impossible to retrieve a single editor from a container, so lets store it
+      $('#'+ed.id).data("tinyEditor", ed);
+    });
+    return $(result);
+  };
+
+  tinymceEditor.tracked = function (el) {
+    if (typeof tinymce == "undefined") {
+      return false;
+    }
+    el = $(el)[0];
+    return !!$(el).data("tinyEditor");
+    /*var flag = false;
+    $(window.tinymce.editors).each(function (i, ed) {
+      if (el.id == ed.id) {
+        flag = true;
+      }
+    });
+    return flag;*/
+  };
+
+  TogetherJS.addTracker(tinymceEditor, true);
+  ///////////////// END OF TINYMCE ///////////////////////////////////
+
+  function buildTrackers() {
+    assert(! liveTrackers.length);
+    util.forEachAttr(editTrackers, function (TrackerClass) {
+      var els = TrackerClass.scan();
+      if (els) {
+        $.each(els, function () {
+          var tracker = new TrackerClass(this);
+          $(this).data("togetherjsHistory", ot.SimpleHistory(session.clientId, tracker.getContent(), 1));
+          liveTrackers.push(tracker);
+        });
+      }
+    });
+  }
+
+  function destroyTrackers() {
+    liveTrackers.forEach(function (tracker) {
+      tracker.destroy();
+    });
+    liveTrackers = [];
+  }
+
+  function elementTracked(el) {
+    var result = false;
+    util.forEachAttr(editTrackers, function (TrackerClass) {
+      if (TrackerClass.tracked(el)) {
+        result = true;
+      }
+    });
+    return result;
+  }
+
+  function getTracker(el, name) {
+    el = $(el)[0];
+    for (var i=0; i<liveTrackers.length; i++) {
+      var tracker = liveTrackers[i];
+      if (tracker.tracked(el)) {
+        //FIXME: assert statement below throws an exception when data is submitted to the hub too fast
+        //in other words, name == tracker.trackerName instead of name == tracker when someone types too fast in the tracked editor
+        //commenting out this assert statement solves the problem
+        assert((! name) || name == tracker.trackerName, "Expected to map to a tracker type", name, "but got", tracker.trackerName);
+        return tracker;
+      }
+    }
+    return null;
+  }
+
+  var TEXT_TYPES = (
+    "color date datetime datetime-local email " +
+        "tel text time week").split(/ /g);
+
+  function isText(el) {
+    el = $(el);
+    var tag = el.prop("tagName");
+    var type = (el.prop("type") || "text").toLowerCase();
+    if (tag == "TEXTAREA") {
+      return true;
+    }
+    if (tag == "INPUT" && TEXT_TYPES.indexOf(type) != -1) {
+      return true;
+    }
+    return false;
+  }
+
+  function getValue(el) {
+    el = $(el);
+    if (isCheckable(el)) {
+      return el.prop("checked");
+    } else {
+      return el.val();
+    }
+  }
+
+  function getElementType(el) {
+    el = $(el)[0];
+    if (el.tagName == "TEXTAREA") {
+      return "textarea";
+    }
+    if (el.tagName == "SELECT") {
+      return "select";
+    }
+    if (el.tagName == "INPUT") {
+      return (el.getAttribute("type") || "text").toLowerCase();
+    }
+    return "?";
+  }
+
+  function setValue(el, value) {
+    el = $(el);
+    var changed = false;
+    if (isCheckable(el)) {
+      var checked = !! el.prop("checked");
+      value = !! value;
+      if (checked != value) {
+        changed = true;
+        el.prop("checked", value);
+      }
+    } else {
+      if (el.val() != value) {
+        changed = true;
+        el.val(value);
+      }
+    }
+    if (changed) {
+      eventMaker.fireChange(el);
+    }
+  }
+
+  /* Send the top of this history queue, if it hasn't been already sent. */
+  function maybeSendUpdate(element, history, tracker) {
+    var change = history.getNextToSend();
+    if (! change) {
+      /* nothing to send */
+      return;
+    }
+    var msg = {
+      type: "form-update",
+      element: element,
+      "server-echo": true,
+      replace: {
+        id: change.id,
+        basis: change.basis,
+        delta: {
+          start: change.delta.start,
+          del: change.delta.del,
+          text: change.delta.text
+        }
+      }
+    };
+    if (tracker) {
+      msg.tracker = tracker;
+    }
+    session.send(msg);
+  }
+
+  session.hub.on("form-update", function (msg) {
+    if (! msg.sameUrl) {
+      return;
+    }
+    var el = $(elementFinder.findElement(msg.element));
+    var tracker;
+    if (msg.tracker) {
+      tracker = getTracker(el, msg.tracker);
+      assert(tracker);
+    }
+    var focusedEl = el[0].ownerDocument.activeElement;
+    var focusedElSelection;
+    if (isText(focusedEl)) {
+      focusedElSelection = [focusedEl.selectionStart, focusedEl.selectionEnd];
+    }
+    var selection;
+    if (isText(el)) {
+      selection = [el[0].selectionStart, el[0].selectionEnd];
+    }
+    var value;
+    if (msg.replace) {
+      var history = el.data("togetherjsHistory");
+      if (!history) {
+        console.warn("form update received for uninitialized form element");
+        return;
+      }
+      history.setSelection(selection);
+      // make a real TextReplace object.
+      msg.replace.delta = ot.TextReplace(msg.replace.delta.start,
+                                         msg.replace.delta.del,
+                                         msg.replace.delta.text);
+      // apply this change to the history
+      var changed = history.commit(msg.replace);
+      var trackerName = null;
+      if (typeof tracker != "undefined") {
+        trackerName = tracker.trackerName;
+      }
+      maybeSendUpdate(msg.element, history, trackerName);
+      if (! changed) {
+        return;
+      }
+      value = history.current;
+      selection = history.getSelection();
+    } else {
+      value = msg.value;
+    }
+    inRemoteUpdate = true;
+    try {
+      if(tracker) {
+        tracker.update({value:value});
+      } else {
+        setValue(el, value);
+      }
+      if (isText(el)) {
+        el[0].selectionStart = selection[0];
+        el[0].selectionEnd = selection[1];
+      }
+      // return focus to original input:
+      if (focusedEl != el[0]) {
+        focusedEl.focus();
+        if (isText(focusedEl)) {
+          focusedEl.selectionStart = focusedElSelection[0];
+          focusedEl.selectionEnd = focusedElSelection[1];
+        }
+      }
+    } finally {
+      inRemoteUpdate = false;
+    }
+  });
+
+  var initSent = false;
+
+  function sendInit() {
+    initSent = true;
+    var msg = {
+      type: "form-init",
+      pageAge: Date.now() - TogetherJS.pageLoaded,
+      updates: []
+    };
+    var els = $("textarea, input, select");
+    els.each(function () {
+      if (elementFinder.ignoreElement(this) || elementTracked(this) ||
+          suppressSync(this)) {
+        return;
+      }
+      var el = $(this);
+      var value = getValue(el);
+      var upd = {
+        element: elementFinder.elementLocation(this),
+        value: value,
+        elementType: getElementType(el)
+      };
+      if (isText(el)) {
+        var history = el.data("togetherjsHistory");
+        if (history) {
+          upd.value = history.committed;
+          upd.basis = history.basis;
+        }
+      }
+      msg.updates.push(upd);
+    });
+    liveTrackers.forEach(function (tracker) {
+      var init = tracker.makeInit();
+      assert(tracker.tracked(init.element));
+      var history = $(init.element).data("togetherjsHistory");
+      if (history) {
+        init.value = history.committed;
+        init.basis = history.basis;
+      }
+      init.element = elementFinder.elementLocation($(init.element));
+      msg.updates.push(init);
+    });
+    if (msg.updates.length) {
+      session.send(msg);
+    }
+  }
+
+  function setInit() {
+    var els = $("textarea, input, select");
+    els.each(function () {
+      if (elementTracked(this)) {
+        return;
+      }
+      if (elementFinder.ignoreElement(this)) {
+        return;
+      }
+      var el = $(this);
+      var value = getValue(el);
+      el.data("togetherjsHistory", ot.SimpleHistory(session.clientId, value, 1));
+    });
+    destroyTrackers();
+    buildTrackers();
+  }
+
+  session.on("reinitialize", setInit);
+
+  session.on("ui-ready", setInit);
+
+  session.on("close", destroyTrackers);
+
+  session.hub.on("form-init", function (msg) {
+    if (! msg.sameUrl) {
+      return;
+    }
+    if (initSent) {
+      // In a 3+-peer situation more than one client may init; in this case
+      // we're probably the other peer, and not the peer that needs the init
+      // A quick check to see if we should init...
+      var myAge = Date.now() - TogetherJS.pageLoaded;
+      if (msg.pageAge < myAge) {
+        // We've been around longer than the other person...
+        return;
+      }
+    }
+    // FIXME: need to figure out when to ignore inits
+    msg.updates.forEach(function (update) {
+      var el;
+      try {
+        el = elementFinder.findElement(update.element);
+      } catch (e) {
+        /* skip missing element */
+        console.warn(e);
+        return;
+      }
+        inRemoteUpdate = true;
+        try {
+          if (update.tracker) {
+            var tracker = getTracker(el, update.tracker);
+            assert(tracker);
+            tracker.init(update, msg);
+          } else {
+            setValue(el, update.value);
+          }
+          if (update.basis) {
+            var history = $(el).data("togetherjsHistory");
+            // don't overwrite history if we're already up to date
+            // (we might have outstanding queued changes we don't want to lose)
+            if (!(history && history.basis === update.basis &&
+                  // if history.basis is 1, the form could have lingering
+                  // edits from before togetherjs was launched.  that's too bad,
+                  // we need to erase them to resynchronize with the peer
+                  // we just asked to join.
+                  history.basis !== 1)) {
+              $(el).data("togetherjsHistory", ot.SimpleHistory(session.clientId, update.value, update.basis));
+            }
+          }
+        } finally {
+          inRemoteUpdate = false;
+        }
+    });
+  });
+
+  var lastFocus = null;
+
+  function focus(event) {
+    var target = event.target;
+    if (elementFinder.ignoreElement(target) || elementTracked(target)) {
+      blur(event);
+      return;
+    }
+    if (target != lastFocus) {
+      lastFocus = target;
+      session.send({type: "form-focus", element: elementFinder.elementLocation(target)});
+    }
+  }
+
+  function blur(event) {
+    var target = event.target;
+    if (lastFocus) {
+      lastFocus = null;
+      session.send({type: "form-focus", element: null});
+    }
+  }
+
+  var focusElements = {};
+
+  session.hub.on("form-focus", function (msg) {
+    var current = focusElements[msg.peer.id];
+    if (current) {
+      current.remove();
+      current = null;
+    }
+    if (! msg.element) {
+      // A blur
+      return;
+    }
+    var element = elementFinder.findElement(msg.element);
+    var el = createFocusElement(msg.peer, element);
+    if (el) {
+      focusElements[msg.peer.id] = el;
+    }
+  });
+
+  session.hub.on("hello", function (msg) {
+    if (lastFocus) {
+      setTimeout(function () {
+        if (lastFocus) {
+          session.send({type: "form-focus", element: elementFinder.elementLocation(lastFocus)});
+        }
+      });
+    }
+  });
+
+  function createFocusElement(peer, around) {
+    around = $(around);
+    var aroundOffset = around.offset();
+    if (! aroundOffset) {
+      console.warn("Could not get offset of element:", around[0]);
+      return null;
+    }
+    var el = templating.sub("focus", {peer: peer});
+    el = el.find(".togetherjs-focus");
+    el.css({
+      top: aroundOffset.top-FOCUS_BUFFER + "px",
+      left: aroundOffset.left-FOCUS_BUFFER + "px",
+      width: around.outerWidth() + (FOCUS_BUFFER*2) + "px",
+      height: around.outerHeight() + (FOCUS_BUFFER*2) + "px"
+    });
+    $(document.body).append(el);
+    return el;
+  }
+
+  session.on("ui-ready", function () {
+    $(document).on("change", change);
+    // note that textInput, keydown, and keypress aren't appropriate events
+    // to watch, since they fire *before* the element's value changes.
+    $(document).on("input keyup cut paste", maybeChange);
+    $(document).on("focusin", focus);
+    $(document).on("focusout", blur);
+  });
+
+  session.on("close", function () {
+    $(document).off("change", change);
+    $(document).off("input keyup cut paste", maybeChange);
+    $(document).off("focusin", focus);
+    $(document).off("focusout", blur);
+  });
+
+  session.hub.on("hello", function (msg) {
+    if (msg.sameUrl) {
+      setTimeout(sendInit);
+    }
+  });
+
+  return forms;
+});
diff --git a/v3/js/togetherjs/togetherjs/help.txt b/v3/js/togetherjs/togetherjs/help.txt
new file mode 100644
index 000000000..530d15e0c
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/help.txt
@@ -0,0 +1,19 @@
+<% /*
+  This is used to show the help when you type /help.  Used in
+  TogetherJS.localChatMessage().
+
+*/ %>
+/help : this message
+/test : run an automated/randomized test (or stop one that is in progress)
+  /test start N : run N times (instead of default 100)
+  /test show : show what kind of actions the random test would take (or stop showing)
+  /test describe : describe the possible actions (instead of showing them)
+/clear : clear the chat area
+/record : open up a recorder for the session
+/playback URL : play back a session that was recorded (it's up to you to figure out how to host it)
+  /playback local:NAME : play a locally saved log
+/savelogs NAME : save the currently recorded logs under NAME (recorder must be open)
+/baseurl : set a local baseUrl to load TogetherJS from, for debugging a development version of TogetherJS.
+/config : override some TogetherJS configuration parameters
+  /config VAR VALUE : set TogetherJS.config("VAR", VALUE).  VALUE must be a legal Javascript/JSON literal.
+  /config clear : remove all overridden configuration
diff --git a/v3/js/togetherjs/togetherjs/images/btn-menu-change-avatar.png b/v3/js/togetherjs/togetherjs/images/btn-menu-change-avatar.png
new file mode 100644
index 000000000..1efef1c0d
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/btn-menu-change-avatar.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-chat-active.png b/v3/js/togetherjs/togetherjs/images/button-chat-active.png
new file mode 100644
index 000000000..bd340acad
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-chat-active.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-chat.png b/v3/js/togetherjs/togetherjs/images/button-chat.png
new file mode 100644
index 000000000..c5912f139
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-chat.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-end-session.png b/v3/js/togetherjs/togetherjs/images/button-end-session.png
new file mode 100644
index 000000000..84fb19548
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-end-session.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-mic-active.png b/v3/js/togetherjs/togetherjs/images/button-mic-active.png
new file mode 100644
index 000000000..77a400f5a
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-mic-active.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-mic-inactive.png b/v3/js/togetherjs/togetherjs/images/button-mic-inactive.png
new file mode 100644
index 000000000..417d07d49
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-mic-inactive.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-mic.png b/v3/js/togetherjs/togetherjs/images/button-mic.png
new file mode 100644
index 000000000..3d2fc2e85
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-mic.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-pencil.png b/v3/js/togetherjs/togetherjs/images/button-pencil.png
new file mode 100644
index 000000000..737604524
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-pencil.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-share-active.png b/v3/js/togetherjs/togetherjs/images/button-share-active.png
new file mode 100644
index 000000000..34e944c26
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-share-active.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-share-hover.png b/v3/js/togetherjs/togetherjs/images/button-share-hover.png
new file mode 100644
index 000000000..37638832c
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-share-hover.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/button-share.png b/v3/js/togetherjs/togetherjs/images/button-share.png
new file mode 100644
index 000000000..c6a22c939
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/button-share.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/connect-logo@2x.png b/v3/js/togetherjs/togetherjs/images/connect-logo@2x.png
new file mode 100644
index 000000000..0af56c7d2
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/connect-logo@2x.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/cursor-white.png b/v3/js/togetherjs/togetherjs/images/cursor-white.png
new file mode 100644
index 000000000..b2781fc69
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/cursor-white.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/cursor.svg b/v3/js/togetherjs/togetherjs/images/cursor.svg
new file mode 100644
index 000000000..1d078393c
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/images/cursor.svg
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="15px" height="22.838px" viewBox="96.344 146.692 15 22.838" enable-background="new 96.344 146.692 15 22.838"
+	 xml:space="preserve">
+<path fill="#231F20" d="M98.984,146.692c2.167,1.322,1.624,6.067,3.773,7.298c-0.072-0.488,2.512-0.931,3.097,0
+	c0.503,0.337,1.104-0.846,2.653,0.443c0.555,0.593,3.258,2.179,1.001,8.851c-0.446,1.316,2.854,0.135,1.169,2.619
+	c-3.748,5.521-9.455,2.787-9.062,1.746c1.06-2.809-6.889-4.885-4.97-9.896c0.834-2.559,2.898,0.653,2.923,0.29
+	c-0.434-1.07-2.608-5.541-2.923-6.985C96.587,150.793,95.342,147.033,98.984,146.692z"/>
+</svg>
diff --git a/v3/js/togetherjs/togetherjs/images/default-avatar-waiting.png b/v3/js/togetherjs/togetherjs/images/default-avatar-waiting.png
new file mode 100644
index 000000000..8fd60c93f
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/default-avatar-waiting.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/default-avatar.png b/v3/js/togetherjs/togetherjs/images/default-avatar.png
new file mode 100644
index 000000000..e2cc96df2
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/default-avatar.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-arrow-up.png b/v3/js/togetherjs/togetherjs/images/icn-arrow-up.png
new file mode 100644
index 000000000..6d8d39c41
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-arrow-up.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-gear.png b/v3/js/togetherjs/togetherjs/images/icn-gear.png
new file mode 100644
index 000000000..093e7d55d
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-gear.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-handle-circle.png b/v3/js/togetherjs/togetherjs/images/icn-handle-circle.png
new file mode 100644
index 000000000..3ba8dba2a
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-handle-circle.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-handle-circle@2x.png b/v3/js/togetherjs/togetherjs/images/icn-handle-circle@2x.png
new file mode 100644
index 000000000..909331cb7
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-handle-circle@2x.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-triangle-up.png b/v3/js/togetherjs/togetherjs/images/icn-triangle-up.png
new file mode 100644
index 000000000..502bf48e9
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-triangle-up.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-l-hover.png b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-l-hover.png
new file mode 100644
index 000000000..e16e9b1df
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-l-hover.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-l.png b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-l.png
new file mode 100644
index 000000000..2ac61e0a7
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-l.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-r-hover.png b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-r-hover.png
new file mode 100644
index 000000000..d99a90183
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-r-hover.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-r.png b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-r.png
new file mode 100644
index 000000000..8e2227e6b
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icn-walkthrough-arrow-r.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icon-close-active.png b/v3/js/togetherjs/togetherjs/images/icon-close-active.png
new file mode 100644
index 000000000..38aac86f8
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icon-close-active.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icon-close-active@2x.png b/v3/js/togetherjs/togetherjs/images/icon-close-active@2x.png
new file mode 100644
index 000000000..68587cb01
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icon-close-active@2x.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icon-close.png b/v3/js/togetherjs/togetherjs/images/icon-close.png
new file mode 100644
index 000000000..d3b00e148
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icon-close.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icon-close@2x.png b/v3/js/togetherjs/togetherjs/images/icon-close@2x.png
new file mode 100644
index 000000000..f71e16b43
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icon-close@2x.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/icon-profile-triangle.png b/v3/js/togetherjs/togetherjs/images/icon-profile-triangle.png
new file mode 100644
index 000000000..32828384a
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/icon-profile-triangle.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/notification-btn-close.png b/v3/js/togetherjs/togetherjs/images/notification-btn-close.png
new file mode 100644
index 000000000..35a21631d
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/notification-btn-close.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/notification-btn-close@2x.png b/v3/js/togetherjs/togetherjs/images/notification-btn-close@2x.png
new file mode 100644
index 000000000..3c6ed7cfa
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/notification-btn-close@2x.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/notification-togetherjs-logo.png b/v3/js/togetherjs/togetherjs/images/notification-togetherjs-logo.png
new file mode 100644
index 000000000..1fb20b9a9
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/notification-togetherjs-logo.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/notification.ogg b/v3/js/togetherjs/togetherjs/images/notification.ogg
new file mode 100644
index 000000000..8d4dc4108
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/notification.ogg differ
diff --git a/v3/js/togetherjs/togetherjs/images/robot-avatar.png b/v3/js/togetherjs/togetherjs/images/robot-avatar.png
new file mode 100644
index 000000000..15a7ba0b7
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/robot-avatar.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/togetherjs-logo-close.png b/v3/js/togetherjs/togetherjs/images/togetherjs-logo-close.png
new file mode 100644
index 000000000..86aed58be
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/togetherjs-logo-close.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/togetherjs-logo-open.png b/v3/js/togetherjs/togetherjs/images/togetherjs-logo-open.png
new file mode 100644
index 000000000..a0d30133b
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/togetherjs-logo-open.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-chat.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-chat.png
new file mode 100644
index 000000000..ddc775bde
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-chat.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-intro.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-intro.png
new file mode 100644
index 000000000..9612aab38
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-intro.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-invite.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-invite.png
new file mode 100644
index 000000000..b18f9914a
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-invite.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-logo.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-logo.png
new file mode 100644
index 000000000..c4c75d112
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-logo.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-participant.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-participant.png
new file mode 100644
index 000000000..da974daae
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-participant.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-profile.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-profile.png
new file mode 100644
index 000000000..55b2c49b9
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-profile.png differ
diff --git a/v3/js/togetherjs/togetherjs/images/walkthrough-images-rtc.png b/v3/js/togetherjs/togetherjs/images/walkthrough-images-rtc.png
new file mode 100644
index 000000000..3b6c6b257
Binary files /dev/null and b/v3/js/togetherjs/togetherjs/images/walkthrough-images-rtc.png differ
diff --git a/v3/js/togetherjs/togetherjs/interface.html b/v3/js/togetherjs/togetherjs/interface.html
new file mode 100644
index 000000000..56880fb7e
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/interface.html
@@ -0,0 +1,554 @@
+<% /*
+   This is basically all the markup and interface for TogetherJS.
+   Note all links should be like http://localhost:8080/togetherjs/*
+   these links are rewritten with the location where TogetherJS was deployed.
+
+   This file is inlined into togetherjs/templates.js
+*/ %>
+<div id="togetherjs-container" class="togetherjs">
+
+  <!-- This is the main set of buttons: -->
+  <div id="togetherjs-dock" class="togetherjs-dock-right">
+    <div id="togetherjs-dock-anchor" title="{{ gettext('Move the dock') }}">
+      <span id="togetherjs-dock-anchor-horizontal">
+        <img src="http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png" alt="drag">
+      </span>
+      <span id="togetherjs-dock-anchor-vertical">
+        <img src="http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png" alt="drag">
+      </span>
+    </div>
+    <div id="togetherjs-buttons">
+      <div style="display: none">
+        <button id="togetherjs-template-dock-person" class="togetherjs-button togetherjs-dock-person">
+          <div class="togetherjs-tooltip togetherjs-dock-person-tooltip">
+            <span class="togetherjs-person-name"></span>
+            <span class="togetherjs-person-tooltip-arrow-r"></span>
+          </div>
+          <div class="togetherjs-person togetherjs-person-status-overlay"></div>
+        </button>
+      </div>
+      <button id="togetherjs-profile-button" class="togetherjs-button" title="{{ gettext('This is you') }}">
+        <div class="togetherjs-person togetherjs-person-self"></div>
+        <div id="togetherjs-profile-arrow"></div>
+      </button>
+      <button id="togetherjs-share-button" class="togetherjs-button" title="{{ gettext('Add a friend') }}"></button>
+      <button id="togetherjs-audio-button" class="togetherjs-button" title="{{ gettext('Turn on microphone')}}">
+        <span id="togetherjs-audio-unavailable" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set">
+        </span>
+        <span id="togetherjs-audio-ready" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set" style="display: none">
+        </span>
+        <span id="togetherjs-audio-outgoing" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set" style="display: none">
+        </span>
+        <span id="togetherjs-audio-incoming" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set" style="display: none">
+        </span>
+        <span id="togetherjs-audio-active" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set" style="display: none">
+        </span>
+        <span id="togetherjs-audio-muted" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set" style="display: none">
+        </span>
+        <span id="togetherjs-audio-error" class="togetherjs-audio-set" data-toggles=".togetherjs-audio-set" style="display: none">
+        </span>
+      </button>
+      <button id="togetherjs-chat-button" class="togetherjs-button" title="{{ gettext('Chat') }}"></button>
+      <div id="togetherjs-dock-participants"></div>
+    </div>
+  </div>
+
+  <!-- The window for editing the avatar: -->
+  <div id="togetherjs-avatar-edit" class="togetherjs-modal"
+       style="display: none">
+    <header> {{ gettext('Update avatar') }} </header>
+    <section>
+      <div class="togetherjs-avatar-preview togetherjs-person togetherjs-person-self"></div>
+      <div id="togetherjs-avatar-buttons">
+        <input type="file" class="togetherjs-upload-avatar">
+        <!--<button id="togetherjs-upload-avatar" class="togetherjs-primary">Upload a picture</button>-->
+        <!--<button id="togetherjs-camera-avatar" class="togetherjs-default">Take a picture</button>-->
+      </div>
+    </section>
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-cancel togetherjs-dismiss">{{ gettext('Cancel') }}</button>
+      <span class="togetherjs-alt-text">{{ gettext('or') }}</span>
+      <button class="togetherjs-avatar-save togetherjs-primary">{{ gettext('Save') }}</button>
+    </section>
+  </div>
+
+  <!-- The window for sharing the link: -->
+  <div id="togetherjs-share" class="togetherjs-window"
+       data-bind-to="#togetherjs-share-button" style="display: none">
+    <header> {{ gettext('Invite a friend') }} </header>
+    <section>
+      <div class="togetherjs-not-mobile">
+        <p>{{ gettext('Copy and paste this link over IM or email:') }}</p>
+        <input type="text" class="togetherjs-share-link">
+      </div>
+      <div class="togetherjs-only-mobile">
+        <p>{{ gettext('Copy and paste this link over IM or email:') }}</p>
+        <input type="text" class="togetherjs-share-link">
+        <!-- <a class="togetherjs-share-link" href="#">Press your thumb here.</a> -->
+      </div>
+    </section>
+  </div>
+
+  <!-- Participant Full List view template: -->
+  <div id="togetherjs-participantlist" class="togetherjs-window"
+       data-bind-to="#togetherjs-participantlist-button" style="display: none">
+    <header> {{ gettext('Participants') }} </header>
+    <section>
+      <div class="togetherjs-not-mobile">
+        <ul>
+          <li id="togetherjs-participant-item">
+            <img class="togetherjs-person togetherjs-person-small" src="http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png">
+            <span class="tj-name togetherjs-person-name">NAME</span>
+            <span class="tj-status">&#9679;</span>
+            <p class="tj-urllocation">{{ gettext('Currently at:') }} <a class="togetherjs-person-url togetherjs-person-url-title" href="">http://www.location.comwww.location.comwww.location.comasdfsafd</a></p>
+            <p class="tj-follow">{{ gettext('Follow:') }}
+              <label class="togetherjs-follow-question" for="togetherjs-person-status-follow">
+                <input type="checkbox" id="togetherjs-person-status-follow">
+              </label>
+            </p>
+            <section class="togetherjs-buttons">
+              <!-- Displayed when the peer is at a different URL: -->
+              <div class="togetherjs-different-url">
+                <a class="togetherjs-nudge togetherjs-default tj-btn-sm">{{ gettext('Nudge them') }}</a>
+                <a href="#" class="togetherjs-follow togetherjs-person-url togetherjs-primary tj-btn-sm">{{ gettext('Join them') }}</a>
+              </div>
+              <!-- Displayed when the peer is at your same URL: -->
+              <div class="togetherjs-same-url" style="display: none">
+                <span class="togetherjs-person-name"></span> {{ gettext('is on the same page as you.')}}
+              </div>
+            </section>
+          </li>
+        </ul>
+    </section>
+  </div>
+
+  <!-- Participant detail template: -->
+  <div id="togetherjs-template-participant-window" class="togetherjs-window" style="display: none">
+    <header><div class="togetherjs-person togetherjs-person-small"></div><span class="togetherjs-person-name"></span></header>
+
+    <section class="togetherjs-participant-window-main">
+      <p class="togetherjs-participant-window-row"><strong>{{ gettext('Role:') }}</strong>
+        <span class="togetherjs-person-role"></span>
+      </p>
+
+      <p class="togetherjs-participant-window-row"><strong>{{ gettext('Currently at:') }}</strong>
+        <a class="togetherjs-person-url togetherjs-person-url-title"></a>
+      </p>
+
+      <p class="togetherjs-participant-window-row"><strong>{{ gettext('Status:') }}</strong>
+        <span class="togetherjs-person-status"></span>
+      </p>
+
+      <p class="togetherjs-participant-window-row"><strong class="togetherjs-float-left">{{ gettext('Follow this participant:') }}</strong>
+        <label class="togetherjs-follow-question togetherjs-float-left" for="togetherjs-person-status-follow">
+          <input type="checkbox" id="togetherjs-person-status-follow">
+        </label>
+        <span class="togetherjs-clear"></span>
+      </p>
+
+    </section>
+
+    <section class="togetherjs-buttons">
+      <!-- Displayed when the peer is at a different URL: -->
+      <div class="togetherjs-different-url">
+        <a class="togetherjs-nudge togetherjs-default">{{ gettext('Nudge them') }}</a>
+        <a href="#" class="togetherjs-follow togetherjs-person-url togetherjs-primary">{{ gettext('Join them') }}</a>
+      </div>
+      <!-- Displayed when the peer is at your same URL: -->
+      <div class="togetherjs-same-url" style="display: none">
+        <span class="togetherjs-person-name"></span> {{ gettext('is on the same page as you.') }}
+      </div>
+    </section>
+  </div>
+
+  <!-- The chat screen: -->
+  <div id="togetherjs-chat" class="togetherjs-window" data-bind-to="#togetherjs-chat-button"
+       style="display: none">
+    <header> {{ gettext('Chat') }} </header>
+    <section class="togetherjs-subtitle">
+      <div id="togetherjs-chat-participants" data-toggles="#togetherjs-chat-no-participants" style="display: none">
+        <span id="togetherjs-chat-participant-list"></span>
+        &amp; {{ gettext('You') }}
+      </div>
+      <!-- pgbovine - add a better default message
+      <div id="togetherjs-chat-no-participants" data-toggles="#togetherjs-chat-participants">
+        {{ gettext('No one else is here.') }}
+      </div>
+      -->
+      <div id="togetherjs-chat-no-participants" data-toggles="#togetherjs-chat-participants">
+        {{ gettext('Nobody is here yet. Please wait ...') }}
+      </div>
+
+    </section>
+
+    <div style="display: none">
+
+      <!-- Template for one message: -->
+      <div id="togetherjs-template-chat-message" class="togetherjs-chat-item togetherjs-chat-message">
+        <div class="togetherjs-person"></div>
+        <div class="togetherjs-timestamp"><span class="togetherjs-time">HH:MM</span> <span class="togetherjs-ampm">AM/PM</span></div>
+        <div class="togetherjs-person-name-abbrev"></div>
+        <div class="togetherjs-chat-content togetherjs-sub-content"></div>
+      </div>
+
+      <!-- Template for when a person leaves: -->
+      <div id="togetherjs-template-chat-left" class="togetherjs-chat-item togetherjs-chat-left-item">
+        <div class="togetherjs-person"></div>
+        <div class="togetherjs-ifnot-declinedJoin">
+          <div class="togetherjs-inline-text"><span class="togetherjs-person-name"></span> {{ gettext('left the session.') }}</div>
+        </div>
+        <div class="togetherjs-if-declinedJoin">
+          <div class="togetherjs-inline-text"><span class="togetherjs-person-name"></span> {{ gettext('declined to join the session.')}}</div>
+        </div>
+        <div class="togetherjs-clear"></div>
+      </div>
+
+      <!-- Template when a person joins the session: -->
+      <div id="togetherjs-template-chat-joined" class="togetherjs-chat-item togetherjs-chat-join-item">
+        <div class="togetherjs-person"></div>
+        <div class="togetherjs-inline-text"><span class="togetherjs-person-name"></span> {{ gettext('joined the session.') }}</div>
+        <div class="togetherjs-clear"></div>
+      </div>
+
+      <!-- Template for system-derived messages: -->
+      <div id="togetherjs-template-chat-system" class="togetherjs-chat-item">
+        <span class="togetherjs-chat-content togetherjs-sub-content"></span>
+      </div>
+
+      <!-- Template when a person joins the session: -->
+      <!-- <div id="togetherjs-template-chat-joined" class="togetherjs-chat-item togetherjs-chat-join-item">
+        <div class="togetherjs-person"></div>
+        <div class="togetherjs-inline-text"><span class="togetherjs-person-name"></span> joined the session.</div>
+        <div class="togetherjs-clear"></div>
+      </div> -->
+
+      <!-- Template for when someone goes to a new URL: -->
+      <div id="togetherjs-template-url-change" class="togetherjs-chat-item togetherjs-chat-url-change">
+        <div class="togetherjs-person"></div>
+        <div class="togetherjs-inline-text">
+          <div class="togetherjs-if-sameUrl">
+            <span class="togetherjs-person-name"></span>
+            {{ gettext('is on the same page as you.') }}
+          </div>
+          <div class="togetherjs-ifnot-sameUrl">
+            <span class="togetherjs-person-name"></span>
+            {{ gettext('has gone to:') }} <a href="#" class="togetherjs-person-url togetherjs-person-url-title" target="_self"></a>
+            <section class="togetherjs-buttons togetherjs-buttons-notification-diff-url">
+              <!-- Displayed when the peer is at a different URL: -->
+              <div class="togetherjs-different-url togetherjs-notification-diff-url">
+                <a class="togetherjs-nudge togetherjs-default">{{ gettext('Nudge them') }}</a>
+                <a href="#" class="togetherjs-follow togetherjs-person-url togetherjs-primary">{{ gettext('Join them') }}</a>
+              </div>
+            </section>
+
+            <!-- <div>
+              <a class="togetherjs-nudge togetherjs-secondary">Nudge them</a>
+              <a href="" class="togetherjs-person-url togetherjs-follow togetherjs-primary">Join them</a>
+            </div> -->
+
+          </div>
+        </div>
+        <div class="togetherjs-clear"></div>
+      </div>
+    </div>
+
+    <section id="togetherjs-chat-messages">
+      <!-- FIX ME// need to have some dialogue that says something like - There are no chats yet! -->
+    </section>
+    <section id="togetherjs-chat-input-box">
+      <textarea id="togetherjs-chat-input" placeholder="{{ gettext('Type your message here') }}"></textarea>
+    </section>
+  </div>
+
+  <!-- this is a kind of warning popped up when you (successfully) start RTC: -->
+  <div id="togetherjs-rtc-info" class="togetherjs-window"
+       data-bind-to="#togetherjs-audio-button"
+       style="display: none">
+
+    <header> {{ gettext('Audio Chat') }} </header>
+    <section>
+      <p>
+        {{ gettext('Activate your <strong>browser microphone</strong> near your URL bar above.') }}
+      </p>
+      <p>
+        {{ gettext('Talking on your microphone through your web browser is an experimental feature.') }}
+      </p>
+      <p>
+        {{ gettext('Read more about Audio Chat') }} <a href="https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC" target="_blank">{{ gettext('here') }}</a>.
+      </p>
+    </section>
+
+    <section class="togetherjs-buttons">
+      <label for="togetherjs-rtc-info-dismiss" style="display: inline;">
+        <input class="togetherjs-dont-show-again" id="togetherjs-rtc-info-dismiss" type="checkbox">
+        {{ gettext('Don\'t show again.') }}
+      </label>
+      <button class="togetherjs-default togetherjs-dismiss" type="button">{{ gettext('Close') }}</button>
+    </section>
+  </div>
+
+  <!-- this is popped up when you hit the audio button, but RTC isn't
+  supported: -->
+  <div id="togetherjs-rtc-not-supported" class="togetherjs-window"
+       data-bind-to="#togetherjs-audio-button"
+       style="display: none">
+    <header> {{ gettext('Audio Chat') }} </header>
+
+    <section>
+      <p>{{ gettext('Audio chat requires you to use a <a href=\'https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\' target=\'_blank\'>newer browser</a>!') }}</p>
+      <p>
+        {{ gettext('Live audio chat requires a newer (or different) browser than you\'re using.') }}
+      </p>
+      <p>
+        {{ gettext('See <a href=\'https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\' target=\'_blank\'>this page</a>for more information and a list of supported browsers.') }}
+      </p>
+    </section>
+
+    <section class="togetherjs-buttons">
+      <div class="togetherjs-rtc-dialog-btn">
+        <button class="togetherjs-default togetherjs-dismiss" type="button">{{ gettext('Close') }}</button>
+      </div>
+    </section>
+  </div>
+
+  <!-- The popup when a chat message comes in and the #togetherjs-chat window isn't open -->
+  <div id="togetherjs-chat-notifier" class="togetherjs-notification"
+       data-bind-to="#togetherjs-chat-button"
+       style="display: none">
+    <img src="http://localhost:8080/togetherjs/images/notification-togetherjs-logo.png" class="togetherjs-notification-logo" alt="">
+    <img src="http://localhost:8080/togetherjs/images/notification-btn-close.png" class="togetherjs-notification-closebtn togetherjs-dismiss" alt="[close]">
+    <section id="togetherjs-chat-notifier-message">
+    </section>
+  </div>
+
+  <!-- The menu when you click on the profile: -->
+  <div id="togetherjs-menu" class="togetherjs-menu" style="display: none">
+    <div class="togetherjs-menu-item togetherjs-menu-disabled" id="togetherjs-menu-profile">
+      <img id="togetherjs-menu-avatar">
+      <span class="togetherjs-person-name-self" id="togetherjs-self-name-display" data-toggles="#togetherjs-menu .togetherjs-self-name">[nickname]</span>
+      <input class="togetherjs-self-name" type="text" data-toggles="#togetherjs-self-name-display" style="display: none" placeholder="{{ gettext("Enter your name") }}">
+    </div>
+    <div class="togetherjs-menu-hr-avatar"></div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-update-name"><img src="http://localhost:8080/togetherjs/images/button-pencil.png" alt=""> {{ gettext('Update your name') }}</div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-update-avatar"><img src="http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png" alt=""> {{ gettext('Change avatar') }}</div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-update-color"><span class="togetherjs-person-bgcolor-self"></span> {{ gettext('Pick profile color') }}</div>
+    <div class="togetherjs-hr"></div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-help">{{ gettext('Help') }}</div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-feedback">{{ gettext('Feedback') }}</div>
+    <div id="togetherjs-invite" style="display: none">
+      <div class="togetherjs-hr"></div>
+      <div id="togetherjs-invite-users"></div>
+      <div class="togetherjs-menu-item" id="togetherjs-menu-refresh-invite">{{ gettext('Refresh users') }}</div>
+      <div class="togetherjs-menu-item" id="togetherjs-menu-invite-anyone">{{ gettext('Invite anyone') }}</div>
+    </div>
+    <div class="togetherjs-hr"></div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-end"><img src="http://localhost:8080/togetherjs/images/button-end-session.png" alt=""> {{ gettext('End') }} <span class="togetherjs-tool-name">{{ gettext('TogetherJS') }}</span></div>
+  </div>
+
+  <!-- template for one person in the invite-users list -->
+  <div style="display: none">
+    <div id="togetherjs-template-invite-user-item" class="togetherjs-menu-item">
+      <!-- FIXME: should include avatar in some way -->
+      <span class="togetherjs-person-name"></span>
+    </div>
+  </div>
+
+  <!-- A window version of #togetherjs-menu, for use on mobile -->
+  <div id="togetherjs-menu-window" class="togetherjs-window" style="display: none">
+    <header>{{ gettext('Settings and Profile') }}</header>
+    <section>
+    <div class="togetherjs-menu-item">
+      <img class="togetherjs-menu-avatar">
+      <span class="togetherjs-person-name-self" id="togetherjs-self-name-display"></span>
+    </div>
+    <div class="togetherjs-menu-hr-avatar"></div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-update-name-button"><img src="http://localhost:8080/togetherjs/images/button-pencil.png" alt=""> {{ gettext('Update your name') }}</div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-update-avatar-button"><img src="http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png" alt=""> {{ gettext('Change avatar') }}</div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-update-color-button"><span class="togetherjs-person-bgcolor-self"></span> {{ gettext('Pick profile color') }}</div>
+    <div class="togetherjs-hr"></div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-help-button">{{ gettext('Help') }}</div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-feedback-button">{{ gettext('Feedback') }}</div>
+    <div class="togetherjs-hr"></div>
+    <div class="togetherjs-menu-item" id="togetherjs-menu-end-button"><img src="http://localhost:8080/togetherjs/images/button-end-session.png" alt=""> {{ gettext('End TOOL_NAME') }}</div>
+    </section>
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-dismiss togetherjs-primary">{{ gettext('OK') }}</button>
+    </section>
+  </div>
+
+  <!-- The name editor, for use on mobile -->
+  <div id="togetherjs-edit-name-window" class="togetherjs-window" style="display: none">
+    <header>{{ gettext('Update Name') }}</header>
+    <section>
+      <div>
+        <input class="togetherjs-self-name" type="text" placeholder="{{ gettext('Enter your name') }}">
+      </div>
+    </section>
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-dismiss togetherjs-primary">{{ gettext('OK') }}</button>
+    </section>
+  </div>
+
+  <div class="togetherjs-menu" id="togetherjs-pick-color" style="display: none">
+    <div class="togetherjs-triangle-up"><img src="http://localhost:8080/togetherjs/images/icn-triangle-up.png"></div>
+    <div style="display: none">
+      <div id="togetherjs-template-swatch" class="togetherjs-swatch">
+      </div>
+    </div>
+  </div>
+
+  <!-- Invisible elements that handle the RTC audio: -->
+  <audio id="togetherjs-audio-element"></audio>
+  <audio id="togetherjs-local-audio" muted="true" volume="0.3"></audio>
+  <audio id="togetherjs-notification" src="http://localhost:8080/togetherjs/images/notification.ogg"></audio>
+
+  <!-- The intro screen for someone who joins a session the first time: -->
+  <div id="togetherjs-intro" class="togetherjs-modal" style="display: none">
+    <header>{{ gettext('Join TOOL_NAME session?') }}</header>
+    <section>
+      <p>{{ gettext("Your friend has asked you to join their TOOL_SITE_LINK browser session to collaborate in real-time!")}}</p>
+      <p>{{ gettext("Would you like to join their session?") }}</p>
+    </section>
+
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-destructive togetherjs-modal-dont-join">{{ gettext( "No, don't join" ) }}</button>
+      <button class="togetherjs-primary togetherjs-dismiss">{{ gettext( "Yes, join session" ) }}</button>
+    </section>
+  </div>
+
+  <!-- Shown when a web browser is completely incapable of running TogetherJS: -->
+  <div id="togetherjs-browser-broken" class="togetherjs-modal" style="display: none">
+    <header> {{ gettext('Sorry') }} </header>
+
+    <section>
+      <p>
+        {{ gettext("We're sorry, TOOL_NAME doesn't work with this browser.  Please <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>upgrade to a supported browser</a> to try TOOL_NAME." ) }}
+      </p>
+
+      <p id="togetherjs-browser-broken-is-ie" style="display: none">
+        {{ gettext('We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.') }}
+        {{ gettext("Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.") }}
+      </p>
+    </section>
+
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-dismiss togetherjs-primary">{{ gettext('End TOOL_NAME') }}</button>
+    </section>
+
+  </div>
+
+  <!-- Shown when the browser has WebSockets, but is IE (i.e., IE10) -->
+  <div id="togetherjs-browser-unsupported" class="togetherjs-modal" style="display: none">
+    <header> {{ gettext('Unsupported Browser') }} </header>
+
+    <section>
+      <p>
+        {{ gettext('We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href="https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open" target="_blank">GitHub issues</a> we need fixed that you can work on.') }}
+        {{ gettext("Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.") }}
+      </p>
+
+      <p>{{ gettext('You can continue to try to use TOOL_NAME, but you are likely to hit lots of bugs.  So be warned.') }}</p>
+
+    </section>
+
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-dismiss togetherjs-primary">{{ gettext('End TOOL_NAME') }}</button>
+      <button class="togetherjs-dismiss togetherjs-secondary togetherjs-browser-unsupported-anyway">{{ gettext('Try TOOL_NAME Anyway') }}</button>
+    </section>
+
+  </div>
+
+  <div id="togetherjs-confirm-end" class="togetherjs-modal" style="display: none">
+    <header> {{ gettext('End session?') }} </header>
+    <section>
+      <p>
+        {{ gettext("Are you sure you'd like to end your TOOL_NAME session?") }}
+      </p>
+    </section>
+    <section class="togetherjs-buttons">
+      <button class="togetherjs-cancel togetherjs-dismiss">{{ gettext('Cancel') }}</button>
+      <span class="togetherjs-alt-text">{{ gettext('or') }}</span>
+      <button id="togetherjs-end-session" class="togetherjs-destructive">{{ gettext('End session') }}</button>
+    </section>
+  </div>
+
+  <div id="togetherjs-feedback-form" class="togetherjs-modal" style="display: none;">
+    <header> {{ gettext('Feedback') }} </header>
+    <iframe src="https://docs.google.com/a/mozilla.com/forms/d/1lVE7JyRo_tjakN0mLG1Cd9X9vseBX9wci153z9JcNEs/viewform?embedded=true" width="400" height="300" frameborder="0" marginheight="0" marginwidth="0">{{ gettext('Loading form...') }}</iframe>
+    <!-- <p><button class="togetherjs-modal-close">Close</button></p> -->
+  </div>
+
+  <div style="display: none">
+    <!-- This is when you join a session and the other person has already changed to another URL: -->
+    <div id="togetherjs-template-url-change" class="togetherjs-modal">
+      <header> {{ gettext('Following to new URL...') }} </header>
+      <section>
+        <div class="togetherjs-person"></div>
+        {{ gettext('Following') }}
+        <span class="togetherjs-person-name"></span>
+        {{ gettext( "to" ) }} <a href="" class="togetherjs-person-url togetherjs-person-url-title"></a>
+      </section>
+    </div>
+
+    <!-- This is when someone invites you to their session: -->
+    <div id="togetherjs-template-invite" class="togetherjs-chat-item">
+      <div class="togetherjs-person"></div>
+      <div>
+        <span class="togetherjs-person-name"></span>
+        {{ gettext('has invited') }} <strong class="togetherjs-if-forEveryone">{{ gettext('anyone') }}</strong>
+        <strong class="togetherjs-ifnot-forEveryone">{{ gettext('you') }}</strong>
+        {{ gettext( "to" ) }} <a href="" data-togetherjs-subattr-href="href" class="togetherjs-sub-hrefTitle" target="_blank"></a>
+      </div>
+    </div>
+
+  </div>
+
+  <!-- The pointer at the side of a window: -->
+  <div id="togetherjs-window-pointer-right" style="display: none"></div>
+  <div id="togetherjs-window-pointer-left" style="display: none"></div>
+
+  <!-- The element that overlaps the background of the page during a modal dialog: -->
+  <div id="togetherjs-modal-background" style="display: none"></div>
+
+  <!-- Some miscellaneous templates -->
+  <div style="display: none">
+
+    <!-- This is the cursor: -->
+    <div id="togetherjs-template-cursor" class="togetherjs-cursor togetherjs">
+      <!-- Note: images/cursor.svg is a copy of this (for editing): -->
+      <!-- crossbrowser svg dropshadow http://demosthenes.info/blog/600/Creating-a-True-CrossBrowser-Drop-Shadow- -->
+      <svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+      	 width="15px" height="22.838px" viewBox="96.344 146.692 15 22.838" enable-background="new 96.344 146.692 15 22.838"
+      	 xml:space="preserve">
+      <path fill="#231F20" d="M98.984,146.692c2.167,1.322,1.624,6.067,3.773,7.298c-0.072-0.488,2.512-0.931,3.097,0
+      	c0.503,0.337,1.104-0.846,2.653,0.443c0.555,0.593,3.258,2.179,1.001,8.851c-0.446,1.316,2.854,0.135,1.169,2.619
+      	c-3.748,5.521-9.455,2.787-9.062,1.746c1.06-2.809-6.889-4.885-4.97-9.896c0.834-2.559,2.898,0.653,2.923,0.29
+      	c-0.434-1.07-2.608-5.541-2.923-6.985C96.587,150.793,95.342,147.033,98.984,146.692z"/>
+      </svg>
+      <!-- <img class="togetherjs-cursor-img" src="http://localhost:8080/togetherjs/images/cursor.svg"> -->
+      <span class="togetherjs-cursor-container">
+        <span class="togetherjs-cursor-name"></span>
+        <span style="display:none" class="togetherjs-cursor-typing" id="togetherjs-cursor-typebox">
+          <span class="togetherjs-typing-ellipse-one">&#9679;</span><span class="togetherjs-typing-ellipse-two">&#9679;</span><span class="togetherjs-typing-ellipse-three">&#9679;</span>
+        </span>
+        <!-- Displayed when the cursor is below the screen: -->
+        <span class="togetherjs-cursor-down">
+
+        </span>
+        <!-- Displayed when the cursor is above the screen: -->
+        <span class="togetherjs-cursor-up">
+
+        </span>
+      </span>
+    </div>
+
+    <!-- This is the element that goes around focused form elements: -->
+    <div id="togetherjs-template-focus">
+      <div class="togetherjs-focus togetherjs-person-bordercolor"></div>
+    </div>
+
+    <!-- This is a click: -->
+    <div id="togetherjs-template-click" class="togetherjs-click togetherjs">
+    </div>
+  </div>
+</div>
diff --git a/v3/js/togetherjs/togetherjs/jqueryPlugins.js b/v3/js/togetherjs/togetherjs/jqueryPlugins.js
new file mode 100644
index 000000000..9721f6c4b
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/jqueryPlugins.js
@@ -0,0 +1,330 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery"], function ($) {
+  // This isn't really a "module" since it just patches jQuery itself
+
+  // FIX ME Animations TO DO
+  // walkthrough animations go here
+  // animate participant cursor and box popping in when they enter the session
+  // animate participant cursor and box popping out when they leave the session
+  // animate the participant cursor -> rotate down when they're down the page
+  $.fn.rotateCursorDown = function () {
+    $('svg').animate({borderSpacing: -150, opacity: 1}, {
+      step: function(now, fx) {
+        if (fx.prop == "borderSpacing") {
+          $(this).css('-webkit-transform', 'rotate('+now+'deg)')
+            .css('-moz-transform', 'rotate('+now+'deg)')
+            .css('-ms-transform', 'rotate('+now+'deg)')
+            .css('-o-transform', 'rotate('+now+'deg)')
+            .css('transform', 'rotate('+now+'deg)');
+        } else {
+          $(this).css(fx.prop, now);
+        }
+      },
+      duration: 500
+    }, 'linear').promise().then(function () {
+      this.css('-webkit-transform', '');
+      this.css('-moz-transform', '');
+      this.css('-ms-transform', '');
+      this.css('-o-transform', '');
+      this.css('transform', '');
+      this.css("opacity", "");
+    });
+  };
+
+  // animate the participant cursor -> rotate up when they're on the same frame as the user
+  $.fn.rotateCursorDown = function () {
+    $('.togetherjs-cursor svg').animate({borderSpacing: 0, opacity: 1}, {
+      step: function(now, fx) {
+        if (fx.prop == "borderSpacing") {
+          $(this).css('-webkit-transform', 'rotate('+now+'deg)')
+            .css('-moz-transform', 'rotate('+now+'deg)')
+            .css('-ms-transform', 'rotate('+now+'deg)')
+            .css('-o-transform', 'rotate('+now+'deg)')
+            .css('transform', 'rotate('+now+'deg)');
+        } else {
+          $(this).css(fx.prop, now);
+        }
+      },
+      duration: 500
+    }, 'linear').promise().then(function () {
+      this.css('-webkit-transform', '');
+      this.css('-moz-transform', '');
+      this.css('-ms-transform', '');
+      this.css('-o-transform', '');
+      this.css('transform', '');
+      this.css("opacity", "");
+    });
+  };
+
+  // Move notification when another notification slides in //
+
+
+  /* Pop in window from dock button: */
+  $.fn.popinWindow = function () {
+
+    //mobile popout window with no animation
+    if($.browser.mobile) {
+
+       //starting position
+        this.css({
+          left: "0px",
+          opacity: 1,
+          "zIndex": 8888
+        });
+
+        //starting position for arrow
+        $('#togetherjs-window-pointer-right').css({
+          left: "+=74px",
+          opacity: 1,
+          "zIndex": 8888
+        });
+
+        //animate arrow out
+        $('#togetherjs-window-pointer-right').animate({
+          opacity: 1,
+          left: "-=78px"
+        }, {
+          duration:60, easing:"linear"
+        });
+        $('#togetherjs-window-pointer-right').queue();
+
+        //bounce arrow back
+        $('#togetherjs-window-pointer-right').animate({
+          left:'+=4px'
+        }, {
+          duration:60, easing:"linear"
+        });
+
+        //animate window out
+        this.animate({
+          opacity: 1,
+          left: "0px"
+        }, {
+          duration:60, easing:"linear"
+        });
+        this.queue();
+
+        //bounce window back
+        this.animate({
+          left:'0px'
+        }, {
+          duration:60, easing:"linear"
+        });
+    }
+
+    else {
+
+      //starting position
+      this.css({
+        left: "+=74px",
+        opacity: 1,
+        "zIndex": 8888
+      });
+
+      //starting position for arrow
+      $('#togetherjs-window-pointer-right').css({
+        left: "+=74px",
+        opacity: 1,
+        "zIndex": 8888
+      });
+
+      //animate arrow out
+      $('#togetherjs-window-pointer-right').animate({
+        opacity: 1,
+        left: "-=78px"
+      }, {
+        duration:60, easing:"linear"
+      });
+      $('#togetherjs-window-pointer-right').queue();
+
+      //bounce arrow back
+      $('#togetherjs-window-pointer-right').animate({
+        left:'+=4px'
+      }, {
+        duration:60, easing:"linear"
+      });
+
+      //animate window out
+      this.animate({
+        opacity: 1,
+        left: "-=78px"
+      }, {
+        duration:60, easing:"linear"
+      });
+      this.queue();
+
+      //bounce window back
+      this.animate({
+        left:'+=4px'
+      }, {
+        duration:60, easing:"linear"
+      });
+
+    }
+
+  };
+
+  /* Slide in notification window: */
+  $.fn.slideIn = function () {
+    this.css({
+      //top: "240px",
+      left: "+=74px",
+      opacity: 0,
+      "zIndex": 8888
+    });
+    return this.animate({
+      "left": "-=74px",
+      opacity: 1,
+      "zIndex": 9999
+    }, "fast");
+  };
+
+  /* Used to fade away notification windows + flip the bottom of them out: */
+  $.fn.fadeOut = function () {
+    this.animate({borderSpacing: -90, opacity: 0.5}, {
+      step: function(now, fx) {
+        if (fx.prop == "borderSpacing") {
+          $(this).css('-webkit-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('-moz-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('-ms-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('-o-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('transform', 'perspective( 600px ) rotateX('+now+'deg)');
+        } else {
+          $(this).css(fx.prop, now);
+        }
+      },
+      duration: 500
+    }, 'linear').promise().then(function () {
+      this.css('-webkit-transform', '');
+      this.css('-moz-transform', '');
+      this.css('-ms-transform', '');
+      this.css('-o-transform', '');
+      this.css('transform', '');
+      this.css("opacity", "");
+    });
+    return this;
+  };
+
+  /* used when user goes down to participant cursor location on screen */
+  $.fn.easeTo = function (y) {
+    return this.animate({
+      scrollTop: y
+    }, {
+      duration: 400,
+      easing: "swing"
+    });
+  };
+
+  // avatar animate in
+  $.fn.animateDockEntry = function () {
+    var height = this.height();
+    var width = this.width();
+    var backgroundSize = height + 4;
+    var margin = parseInt(this.css("marginLeft"), 10);
+
+    // set starting position CSS for avatar
+    this.css({
+      marginLeft: margin + width/2,
+      height: 0,
+      width: 0,
+      backgroundSize: "0 0"
+    });
+
+    var self = this;
+
+    //then animate avatar to the actual dimensions, and reset the values
+    this.animate({
+      marginLeft: margin,
+      height: height,
+      width: width,
+      backgroundSize: backgroundSize
+    }, {
+      duration: 600
+    }).promise().then(function () {
+      self.css({
+        marginLeft: "",
+        height: "",
+        width: "",
+        backgroundSize: ""
+      });
+    });
+    return this;
+  };
+
+  // avatar animate out, reverse of above
+  $.fn.animateDockExit = function () {
+
+    // get the current avatar dimenensions
+    var height = this.height();
+    var width = this.width();
+    var backgroundSize = height + 4;
+    var margin = parseInt(this.css("marginLeft"), 10);
+
+    //then animate avatar to shrink to nothing, and reset the values again
+    // FIXME this needs to animate from the CENTER
+    this.animate({
+      marginLeft: margin + width/2,
+      height: 0,
+      width: 0,
+      backgroundSize: "0 0",
+      opacity: 0
+    }, 600 );
+
+    return this;
+
+  };
+
+  $.fn.animateCursorEntry = function () {
+    // Make the cursor bubble pop in
+  };
+
+  // keyboard typing animation
+  $.fn.animateKeyboard = function () {
+    var one = this.find(".togetherjs-typing-ellipse-one");
+    var two = this.find(".togetherjs-typing-ellipse-two");
+    var three = this.find(".togetherjs-typing-ellipse-three");
+    var count = -1;
+    var run = (function () {
+      count = (count+1) % 4;
+      if (count === 0) {
+        one.css("opacity", 0.5);
+        two.css("opacity", 0.5);
+        three.css("opacity", 0.5);
+      } else if (count == 1) {
+        one.css("opacity", 1);
+      } else if (count == 2) {
+        two.css("opacity", 1);
+      } else { // count==3
+        three.css("opacity", 1);
+      }
+    }).bind(this);
+    run();
+    var interval = setInterval(run, 300);
+    this.data("animateKeyboard", interval);
+  };
+
+  $.fn.stopKeyboardAnimation = function () {
+    clearTimeout(this.data("animateKeyboard"));
+    this.data("animateKeyboard", null);
+  };
+
+  // FIXME: not sure if this is legit, but at least the modern mobile devices we
+  // care about should have this defined:
+  if (! $.browser) {
+    $.browser = {};
+  }
+  $.browser.mobile = window.orientation !== undefined;
+  if (navigator.userAgent.search(/mobile/i) != -1) {
+    // FIXME: At least on the Firefox OS simulator I need this
+    $.browser.mobile = true;
+  }
+
+  if ($.browser.mobile && window.matchMedia && ! window.matchMedia("screen and (max-screen-width: 480px)").matches) {
+    // FIXME: for Firefox OS simulator really:
+    document.body.className += " togetherjs-mobile-browser";
+  }
+
+});
diff --git a/v3/js/togetherjs/togetherjs/libs/almond.js b/v3/js/togetherjs/togetherjs/libs/almond.js
new file mode 100644
index 000000000..28ed81add
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/almond.js
@@ -0,0 +1,405 @@
+/**
+ * almond 0.2.5 Copyright (c) 2011-2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/almond for details
+ */
+//Going sloppy to avoid 'use strict' string cost, but strict practices should
+//be followed.
+/*jslint sloppy: true */
+/*global setTimeout: false */
+
+var requirejs, require, define;
+(function (undef) {
+    var main, req, makeMap, handlers,
+        defined = {},
+        waiting = {},
+        config = {},
+        defining = {},
+        hasOwn = Object.prototype.hasOwnProperty,
+        aps = [].slice;
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    /**
+     * Given a relative module name, like ./something, normalize it to
+     * a real name that can be mapped to a path.
+     * @param {String} name the relative name
+     * @param {String} baseName a real name that the name arg is relative
+     * to.
+     * @returns {String} normalized name
+     */
+    function normalize(name, baseName) {
+        var nameParts, nameSegment, mapValue, foundMap,
+            foundI, foundStarMap, starI, i, j, part,
+            baseParts = baseName && baseName.split("/"),
+            map = config.map,
+            starMap = (map && map['*']) || {};
+
+        //Adjust any relative paths.
+        if (name && name.charAt(0) === ".") {
+            //If have a base name, try to normalize against it,
+            //otherwise, assume it is a top-level require that will
+            //be relative to baseUrl in the end.
+            if (baseName) {
+                //Convert baseName to array, and lop off the last part,
+                //so that . matches that "directory" and not name of the baseName's
+                //module. For instance, baseName of "one/two/three", maps to
+                //"one/two/three.js", but we want the directory, "one/two" for
+                //this normalization.
+                baseParts = baseParts.slice(0, baseParts.length - 1);
+
+                name = baseParts.concat(name.split("/"));
+
+                //start trimDots
+                for (i = 0; i < name.length; i += 1) {
+                    part = name[i];
+                    if (part === ".") {
+                        name.splice(i, 1);
+                        i -= 1;
+                    } else if (part === "..") {
+                        if (i === 1 && (name[2] === '..' || name[0] === '..')) {
+                            //End of the line. Keep at least one non-dot
+                            //path segment at the front so it can be mapped
+                            //correctly to disk. Otherwise, there is likely
+                            //no path mapping for a path starting with '..'.
+                            //This can still fail, but catches the most reasonable
+                            //uses of ..
+                            break;
+                        } else if (i > 0) {
+                            name.splice(i - 1, 2);
+                            i -= 2;
+                        }
+                    }
+                }
+                //end trimDots
+
+                name = name.join("/");
+            } else if (name.indexOf('./') === 0) {
+                // No baseName, so this is ID is resolved relative
+                // to baseUrl, pull off the leading dot.
+                name = name.substring(2);
+            }
+        }
+
+        //Apply map config if available.
+        if ((baseParts || starMap) && map) {
+            nameParts = name.split('/');
+
+            for (i = nameParts.length; i > 0; i -= 1) {
+                nameSegment = nameParts.slice(0, i).join("/");
+
+                if (baseParts) {
+                    //Find the longest baseName segment match in the config.
+                    //So, do joins on the biggest to smallest lengths of baseParts.
+                    for (j = baseParts.length; j > 0; j -= 1) {
+                        mapValue = map[baseParts.slice(0, j).join('/')];
+
+                        //baseName segment has  config, find if it has one for
+                        //this name.
+                        if (mapValue) {
+                            mapValue = mapValue[nameSegment];
+                            if (mapValue) {
+                                //Match, update name to the new value.
+                                foundMap = mapValue;
+                                foundI = i;
+                                break;
+                            }
+                        }
+                    }
+                }
+
+                if (foundMap) {
+                    break;
+                }
+
+                //Check for a star map match, but just hold on to it,
+                //if there is a shorter segment match later in a matching
+                //config, then favor over this star map.
+                if (!foundStarMap && starMap && starMap[nameSegment]) {
+                    foundStarMap = starMap[nameSegment];
+                    starI = i;
+                }
+            }
+
+            if (!foundMap && foundStarMap) {
+                foundMap = foundStarMap;
+                foundI = starI;
+            }
+
+            if (foundMap) {
+                nameParts.splice(0, foundI, foundMap);
+                name = nameParts.join('/');
+            }
+        }
+
+        return name;
+    }
+
+    function makeRequire(relName, forceSync) {
+        return function () {
+            //A version of a require function that passes a moduleName
+            //value for items that may need to
+            //look up paths relative to the moduleName
+            return req.apply(undef, aps.call(arguments, 0).concat([relName, forceSync]));
+        };
+    }
+
+    function makeNormalize(relName) {
+        return function (name) {
+            return normalize(name, relName);
+        };
+    }
+
+    function makeLoad(depName) {
+        return function (value) {
+            defined[depName] = value;
+        };
+    }
+
+    function callDep(name) {
+        if (hasProp(waiting, name)) {
+            var args = waiting[name];
+            delete waiting[name];
+            defining[name] = true;
+            main.apply(undef, args);
+        }
+
+        if (!hasProp(defined, name) && !hasProp(defining, name)) {
+            throw new Error('No ' + name);
+        }
+        return defined[name];
+    }
+
+    //Turns a plugin!resource to [plugin, resource]
+    //with the plugin being undefined if the name
+    //did not have a plugin prefix.
+    function splitPrefix(name) {
+        var prefix,
+            index = name ? name.indexOf('!') : -1;
+        if (index > -1) {
+            prefix = name.substring(0, index);
+            name = name.substring(index + 1, name.length);
+        }
+        return [prefix, name];
+    }
+
+    /**
+     * Makes a name map, normalizing the name, and using a plugin
+     * for normalization if necessary. Grabs a ref to plugin
+     * too, as an optimization.
+     */
+    makeMap = function (name, relName) {
+        var plugin,
+            parts = splitPrefix(name),
+            prefix = parts[0];
+
+        name = parts[1];
+
+        if (prefix) {
+            prefix = normalize(prefix, relName);
+            plugin = callDep(prefix);
+        }
+
+        //Normalize according
+        if (prefix) {
+            if (plugin && plugin.normalize) {
+                name = plugin.normalize(name, makeNormalize(relName));
+            } else {
+                name = normalize(name, relName);
+            }
+        } else {
+            name = normalize(name, relName);
+            parts = splitPrefix(name);
+            prefix = parts[0];
+            name = parts[1];
+            if (prefix) {
+                plugin = callDep(prefix);
+            }
+        }
+
+        //Using ridiculous property names for space reasons
+        return {
+            f: prefix ? prefix + '!' + name : name, //fullName
+            n: name,
+            pr: prefix,
+            p: plugin
+        };
+    };
+
+    function makeConfig(name) {
+        return function () {
+            return (config && config.config && config.config[name]) || {};
+        };
+    }
+
+    handlers = {
+        require: function (name) {
+            return makeRequire(name);
+        },
+        exports: function (name) {
+            var e = defined[name];
+            if (typeof e !== 'undefined') {
+                return e;
+            } else {
+                return (defined[name] = {});
+            }
+        },
+        module: function (name) {
+            return {
+                id: name,
+                uri: '',
+                exports: defined[name],
+                config: makeConfig(name)
+            };
+        }
+    };
+
+    main = function (name, deps, callback, relName) {
+        var cjsModule, depName, ret, map, i,
+            args = [],
+            usingExports;
+
+        //Use name if no relName
+        relName = relName || name;
+
+        //Call the callback to define the module, if necessary.
+        if (typeof callback === 'function') {
+
+            //Pull out the defined dependencies and pass the ordered
+            //values to the callback.
+            //Default to [require, exports, module] if no deps
+            deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
+            for (i = 0; i < deps.length; i += 1) {
+                map = makeMap(deps[i], relName);
+                depName = map.f;
+
+                //Fast path CommonJS standard dependencies.
+                if (depName === "require") {
+                    args[i] = handlers.require(name);
+                } else if (depName === "exports") {
+                    //CommonJS module spec 1.1
+                    args[i] = handlers.exports(name);
+                    usingExports = true;
+                } else if (depName === "module") {
+                    //CommonJS module spec 1.1
+                    cjsModule = args[i] = handlers.module(name);
+                } else if (hasProp(defined, depName) ||
+                           hasProp(waiting, depName) ||
+                           hasProp(defining, depName)) {
+                    args[i] = callDep(depName);
+                } else if (map.p) {
+                    map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
+                    args[i] = defined[depName];
+                } else {
+                    throw new Error(name + ' missing ' + depName);
+                }
+            }
+
+            ret = callback.apply(defined[name], args);
+
+            if (name) {
+                //If setting exports via "module" is in play,
+                //favor that over return value and exports. After that,
+                //favor a non-undefined return value over exports use.
+                if (cjsModule && cjsModule.exports !== undef &&
+                        cjsModule.exports !== defined[name]) {
+                    defined[name] = cjsModule.exports;
+                } else if (ret !== undef || !usingExports) {
+                    //Use the return value from the function.
+                    defined[name] = ret;
+                }
+            }
+        } else if (name) {
+            //May just be an object definition for the module. Only
+            //worry about defining if have a module name.
+            defined[name] = callback;
+        }
+    };
+
+    requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
+        if (typeof deps === "string") {
+            if (handlers[deps]) {
+                //callback in this case is really relName
+                return handlers[deps](callback);
+            }
+            //Just return the module wanted. In this scenario, the
+            //deps arg is the module name, and second arg (if passed)
+            //is just the relName.
+            //Normalize module name, if it contains . or ..
+            return callDep(makeMap(deps, callback).f);
+        } else if (!deps.splice) {
+            //deps is a config object, not an array.
+            config = deps;
+            if (callback.splice) {
+                //callback is an array, which means it is a dependency list.
+                //Adjust args if there are dependencies
+                deps = callback;
+                callback = relName;
+                relName = null;
+            } else {
+                deps = undef;
+            }
+        }
+
+        //Support require(['a'])
+        callback = callback || function () {};
+
+        //If relName is a function, it is an errback handler,
+        //so remove it.
+        if (typeof relName === 'function') {
+            relName = forceSync;
+            forceSync = alt;
+        }
+
+        //Simulate async callback;
+        if (forceSync) {
+            main(undef, deps, callback, relName);
+        } else {
+            //Using a non-zero value because of concern for what old browsers
+            //do, and latest browsers "upgrade" to 4 if lower value is used:
+            //http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout:
+            //If want a value immediately, use require('id') instead -- something
+            //that works in almond on the global level, but not guaranteed and
+            //unlikely to work in other AMD implementations.
+            setTimeout(function () {
+                main(undef, deps, callback, relName);
+            }, 4);
+        }
+
+        return req;
+    };
+
+    /**
+     * Just drops the config on the floor, but returns req in case
+     * the config return value is used.
+     */
+    req.config = function (cfg) {
+        config = cfg;
+        if (config.deps) {
+            req(config.deps, config.callback);
+        }
+        return req;
+    };
+
+    define = function (name, deps, callback) {
+
+        //This module may not have dependencies
+        if (!deps.splice) {
+            //deps is not an array, so probably means
+            //an object literal or factory function for
+            //the value. Adjust args.
+            callback = deps;
+            deps = [];
+        }
+
+        if (!hasProp(defined, name) && !hasProp(waiting, name)) {
+            waiting[name] = [name, deps, callback];
+        }
+    };
+
+    define.amd = {
+        jQuery: true
+    };
+}());
diff --git a/v3/js/togetherjs/togetherjs/libs/jquery-1.8.3.min.js b/v3/js/togetherjs/togetherjs/libs/jquery-1.8.3.min.js
new file mode 100644
index 000000000..e60a9c456
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/jquery-1.8.3.min.js
@@ -0,0 +1,5 @@
+/*! jQuery v1.8.3 jquery.com | jquery.org/license */
+(function (){
+(function(e,t){function _(e){var t=M[e]={};return v.each(e.split(y),function(e,n){t[n]=!0}),t}function H(e,n,r){if(r===t&&e.nodeType===1){var i="data-"+n.replace(P,"-$1").toLowerCase();r=e.getAttribute(i);if(typeof r=="string"){try{r=r==="true"?!0:r==="false"?!1:r==="null"?null:+r+""===r?+r:D.test(r)?v.parseJSON(r):r}catch(s){}v.data(e,n,r)}else r=t}return r}function B(e){var t;for(t in e){if(t==="data"&&v.isEmptyObject(e[t]))continue;if(t!=="toJSON")return!1}return!0}function et(){return!1}function tt(){return!0}function ut(e){return!e||!e.parentNode||e.parentNode.nodeType===11}function at(e,t){do e=e[t];while(e&&e.nodeType!==1);return e}function ft(e,t,n){t=t||0;if(v.isFunction(t))return v.grep(e,function(e,r){var i=!!t.call(e,r,e);return i===n});if(t.nodeType)return v.grep(e,function(e,r){return e===t===n});if(typeof t=="string"){var r=v.grep(e,function(e){return e.nodeType===1});if(it.test(t))return v.filter(t,r,!n);t=v.filter(t,r)}return v.grep(e,function(e,r){return v.inArray(e,t)>=0===n})}function lt(e){var t=ct.split("|"),n=e.createDocumentFragment();if(n.createElement)while(t.length)n.createElement(t.pop());return n}function Lt(e,t){return e.getElementsByTagName(t)[0]||e.appendChild(e.ownerDocument.createElement(t))}function At(e,t){if(t.nodeType!==1||!v.hasData(e))return;var n,r,i,s=v._data(e),o=v._data(t,s),u=s.events;if(u){delete o.handle,o.events={};for(n in u)for(r=0,i=u[n].length;r<i;r++)v.event.add(t,n,u[n][r])}o.data&&(o.data=v.extend({},o.data))}function Ot(e,t){var n;if(t.nodeType!==1)return;t.clearAttributes&&t.clearAttributes(),t.mergeAttributes&&t.mergeAttributes(e),n=t.nodeName.toLowerCase(),n==="object"?(t.parentNode&&(t.outerHTML=e.outerHTML),v.support.html5Clone&&e.innerHTML&&!v.trim(t.innerHTML)&&(t.innerHTML=e.innerHTML)):n==="input"&&Et.test(e.type)?(t.defaultChecked=t.checked=e.checked,t.value!==e.value&&(t.value=e.value)):n==="option"?t.selected=e.defaultSelected:n==="input"||n==="textarea"?t.defaultValue=e.defaultValue:n==="script"&&t.text!==e.text&&(t.text=e.text),t.removeAttribute(v.expando)}function Mt(e){return typeof e.getElementsByTagName!="undefined"?e.getElementsByTagName("*"):typeof e.querySelectorAll!="undefined"?e.querySelectorAll("*"):[]}function _t(e){Et.test(e.type)&&(e.defaultChecked=e.checked)}function Qt(e,t){if(t in e)return t;var n=t.charAt(0).toUpperCase()+t.slice(1),r=t,i=Jt.length;while(i--){t=Jt[i]+n;if(t in e)return t}return r}function Gt(e,t){return e=t||e,v.css(e,"display")==="none"||!v.contains(e.ownerDocument,e)}function Yt(e,t){var n,r,i=[],s=0,o=e.length;for(;s<o;s++){n=e[s];if(!n.style)continue;i[s]=v._data(n,"olddisplay"),t?(!i[s]&&n.style.display==="none"&&(n.style.display=""),n.style.display===""&&Gt(n)&&(i[s]=v._data(n,"olddisplay",nn(n.nodeName)))):(r=Dt(n,"display"),!i[s]&&r!=="none"&&v._data(n,"olddisplay",r))}for(s=0;s<o;s++){n=e[s];if(!n.style)continue;if(!t||n.style.display==="none"||n.style.display==="")n.style.display=t?i[s]||"":"none"}return e}function Zt(e,t,n){var r=Rt.exec(t);return r?Math.max(0,r[1]-(n||0))+(r[2]||"px"):t}function en(e,t,n,r){var i=n===(r?"border":"content")?4:t==="width"?1:0,s=0;for(;i<4;i+=2)n==="margin"&&(s+=v.css(e,n+$t[i],!0)),r?(n==="content"&&(s-=parseFloat(Dt(e,"padding"+$t[i]))||0),n!=="margin"&&(s-=parseFloat(Dt(e,"border"+$t[i]+"Width"))||0)):(s+=parseFloat(Dt(e,"padding"+$t[i]))||0,n!=="padding"&&(s+=parseFloat(Dt(e,"border"+$t[i]+"Width"))||0));return s}function tn(e,t,n){var r=t==="width"?e.offsetWidth:e.offsetHeight,i=!0,s=v.support.boxSizing&&v.css(e,"boxSizing")==="border-box";if(r<=0||r==null){r=Dt(e,t);if(r<0||r==null)r=e.style[t];if(Ut.test(r))return r;i=s&&(v.support.boxSizingReliable||r===e.style[t]),r=parseFloat(r)||0}return r+en(e,t,n||(s?"border":"content"),i)+"px"}function nn(e){if(Wt[e])return Wt[e];var t=v("<"+e+">").appendTo(i.body),n=t.css("display");t.remove();if(n==="none"||n===""){Pt=i.body.appendChild(Pt||v.extend(i.createElement("iframe"),{frameBorder:0,width:0,height:0}));if(!Ht||!Pt.createElement)Ht=(Pt.contentWindow||Pt.contentDocument).document,Ht.write("<!doctype html><html><body>"),Ht.close();t=Ht.body.appendChild(Ht.createElement(e)),n=Dt(t,"display"),i.body.removeChild(Pt)}return Wt[e]=n,n}function fn(e,t,n,r){var i;if(v.isArray(t))v.each(t,function(t,i){n||sn.test(e)?r(e,i):fn(e+"["+(typeof i=="object"?t:"")+"]",i,n,r)});else if(!n&&v.type(t)==="object")for(i in t)fn(e+"["+i+"]",t[i],n,r);else r(e,t)}function Cn(e){return function(t,n){typeof t!="string"&&(n=t,t="*");var r,i,s,o=t.toLowerCase().split(y),u=0,a=o.length;if(v.isFunction(n))for(;u<a;u++)r=o[u],s=/^\+/.test(r),s&&(r=r.substr(1)||"*"),i=e[r]=e[r]||[],i[s?"unshift":"push"](n)}}function kn(e,n,r,i,s,o){s=s||n.dataTypes[0],o=o||{},o[s]=!0;var u,a=e[s],f=0,l=a?a.length:0,c=e===Sn;for(;f<l&&(c||!u);f++)u=a[f](n,r,i),typeof u=="string"&&(!c||o[u]?u=t:(n.dataTypes.unshift(u),u=kn(e,n,r,i,u,o)));return(c||!u)&&!o["*"]&&(u=kn(e,n,r,i,"*",o)),u}function Ln(e,n){var r,i,s=v.ajaxSettings.flatOptions||{};for(r in n)n[r]!==t&&((s[r]?e:i||(i={}))[r]=n[r]);i&&v.extend(!0,e,i)}function An(e,n,r){var i,s,o,u,a=e.contents,f=e.dataTypes,l=e.responseFields;for(s in l)s in r&&(n[l[s]]=r[s]);while(f[0]==="*")f.shift(),i===t&&(i=e.mimeType||n.getResponseHeader("content-type"));if(i)for(s in a)if(a[s]&&a[s].test(i)){f.unshift(s);break}if(f[0]in r)o=f[0];else{for(s in r){if(!f[0]||e.converters[s+" "+f[0]]){o=s;break}u||(u=s)}o=o||u}if(o)return o!==f[0]&&f.unshift(o),r[o]}function On(e,t){var n,r,i,s,o=e.dataTypes.slice(),u=o[0],a={},f=0;e.dataFilter&&(t=e.dataFilter(t,e.dataType));if(o[1])for(n in e.converters)a[n.toLowerCase()]=e.converters[n];for(;i=o[++f];)if(i!=="*"){if(u!=="*"&&u!==i){n=a[u+" "+i]||a["* "+i];if(!n)for(r in a){s=r.split(" ");if(s[1]===i){n=a[u+" "+s[0]]||a["* "+s[0]];if(n){n===!0?n=a[r]:a[r]!==!0&&(i=s[0],o.splice(f--,0,i));break}}}if(n!==!0)if(n&&e["throws"])t=n(t);else try{t=n(t)}catch(l){return{state:"parsererror",error:n?l:"No conversion from "+u+" to "+i}}}u=i}return{state:"success",data:t}}function Fn(){try{return new e.XMLHttpRequest}catch(t){}}function In(){try{return new e.ActiveXObject("Microsoft.XMLHTTP")}catch(t){}}function $n(){return setTimeout(function(){qn=t},0),qn=v.now()}function Jn(e,t){v.each(t,function(t,n){var r=(Vn[t]||[]).concat(Vn["*"]),i=0,s=r.length;for(;i<s;i++)if(r[i].call(e,t,n))return})}function Kn(e,t,n){var r,i=0,s=0,o=Xn.length,u=v.Deferred().always(function(){delete a.elem}),a=function(){var t=qn||$n(),n=Math.max(0,f.startTime+f.duration-t),r=n/f.duration||0,i=1-r,s=0,o=f.tweens.length;for(;s<o;s++)f.tweens[s].run(i);return u.notifyWith(e,[f,i,n]),i<1&&o?n:(u.resolveWith(e,[f]),!1)},f=u.promise({elem:e,props:v.extend({},t),opts:v.extend(!0,{specialEasing:{}},n),originalProperties:t,originalOptions:n,startTime:qn||$n(),duration:n.duration,tweens:[],createTween:function(t,n,r){var i=v.Tween(e,f.opts,t,n,f.opts.specialEasing[t]||f.opts.easing);return f.tweens.push(i),i},stop:function(t){var n=0,r=t?f.tweens.length:0;for(;n<r;n++)f.tweens[n].run(1);return t?u.resolveWith(e,[f,t]):u.rejectWith(e,[f,t]),this}}),l=f.props;Qn(l,f.opts.specialEasing);for(;i<o;i++){r=Xn[i].call(f,e,l,f.opts);if(r)return r}return Jn(f,l),v.isFunction(f.opts.start)&&f.opts.start.call(e,f),v.fx.timer(v.extend(a,{anim:f,queue:f.opts.queue,elem:e})),f.progress(f.opts.progress).done(f.opts.done,f.opts.complete).fail(f.opts.fail).always(f.opts.always)}function Qn(e,t){var n,r,i,s,o;for(n in e){r=v.camelCase(n),i=t[r],s=e[n],v.isArray(s)&&(i=s[1],s=e[n]=s[0]),n!==r&&(e[r]=s,delete e[n]),o=v.cssHooks[r];if(o&&"expand"in o){s=o.expand(s),delete e[r];for(n in s)n in e||(e[n]=s[n],t[n]=i)}else t[r]=i}}function Gn(e,t,n){var r,i,s,o,u,a,f,l,c,h=this,p=e.style,d={},m=[],g=e.nodeType&&Gt(e);n.queue||(l=v._queueHooks(e,"fx"),l.unqueued==null&&(l.unqueued=0,c=l.empty.fire,l.empty.fire=function(){l.unqueued||c()}),l.unqueued++,h.always(function(){h.always(function(){l.unqueued--,v.queue(e,"fx").length||l.empty.fire()})})),e.nodeType===1&&("height"in t||"width"in t)&&(n.overflow=[p.overflow,p.overflowX,p.overflowY],v.css(e,"display")==="inline"&&v.css(e,"float")==="none"&&(!v.support.inlineBlockNeedsLayout||nn(e.nodeName)==="inline"?p.display="inline-block":p.zoom=1)),n.overflow&&(p.overflow="hidden",v.support.shrinkWrapBlocks||h.done(function(){p.overflow=n.overflow[0],p.overflowX=n.overflow[1],p.overflowY=n.overflow[2]}));for(r in t){s=t[r];if(Un.exec(s)){delete t[r],a=a||s==="toggle";if(s===(g?"hide":"show"))continue;m.push(r)}}o=m.length;if(o){u=v._data(e,"fxshow")||v._data(e,"fxshow",{}),"hidden"in u&&(g=u.hidden),a&&(u.hidden=!g),g?v(e).show():h.done(function(){v(e).hide()}),h.done(function(){var t;v.removeData(e,"fxshow",!0);for(t in d)v.style(e,t,d[t])});for(r=0;r<o;r++)i=m[r],f=h.createTween(i,g?u[i]:0),d[i]=u[i]||v.style(e,i),i in u||(u[i]=f.start,g&&(f.end=f.start,f.start=i==="width"||i==="height"?1:0))}}function Yn(e,t,n,r,i){return new Yn.prototype.init(e,t,n,r,i)}function Zn(e,t){var n,r={height:e},i=0;t=t?1:0;for(;i<4;i+=2-t)n=$t[i],r["margin"+n]=r["padding"+n]=e;return t&&(r.opacity=r.width=e),r}function tr(e){return v.isWindow(e)?e:e.nodeType===9?e.defaultView||e.parentWindow:!1}var n,r,i=e.document,s=e.location,o=e.navigator,u=e.jQuery,a=e.$,f=Array.prototype.push,l=Array.prototype.slice,c=Array.prototype.indexOf,h=Object.prototype.toString,p=Object.prototype.hasOwnProperty,d=String.prototype.trim,v=function(e,t){return new v.fn.init(e,t,n)},m=/[\-+]?(?:\d*\.|)\d+(?:[eE][\-+]?\d+|)/.source,g=/\S/,y=/\s+/,b=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,w=/^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/,E=/^<(\w+)\s*\/?>(?:<\/\1>|)$/,S=/^[\],:{}\s]*$/,x=/(?:^|:|,)(?:\s*\[)+/g,T=/\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,N=/"[^"\\\r\n]*"|true|false|null|-?(?:\d\d*\.|)\d+(?:[eE][\-+]?\d+|)/g,C=/^-ms-/,k=/-([\da-z])/gi,L=function(e,t){return(t+"").toUpperCase()},A=function(){i.addEventListener?(i.removeEventListener("DOMContentLoaded",A,!1),v.ready()):i.readyState==="complete"&&(i.detachEvent("onreadystatechange",A),v.ready())},O={};v.fn=v.prototype={constructor:v,init:function(e,n,r){var s,o,u,a;if(!e)return this;if(e.nodeType)return this.context=this[0]=e,this.length=1,this;if(typeof e=="string"){e.charAt(0)==="<"&&e.charAt(e.length-1)===">"&&e.length>=3?s=[null,e,null]:s=w.exec(e);if(s&&(s[1]||!n)){if(s[1])return n=n instanceof v?n[0]:n,a=n&&n.nodeType?n.ownerDocument||n:i,e=v.parseHTML(s[1],a,!0),E.test(s[1])&&v.isPlainObject(n)&&this.attr.call(e,n,!0),v.merge(this,e);o=i.getElementById(s[2]);if(o&&o.parentNode){if(o.id!==s[2])return r.find(e);this.length=1,this[0]=o}return this.context=i,this.selector=e,this}return!n||n.jquery?(n||r).find(e):this.constructor(n).find(e)}return v.isFunction(e)?r.ready(e):(e.selector!==t&&(this.selector=e.selector,this.context=e.context),v.makeArray(e,this))},selector:"",jquery:"1.8.3",length:0,size:function(){return this.length},toArray:function(){return l.call(this)},get:function(e){return e==null?this.toArray():e<0?this[this.length+e]:this[e]},pushStack:function(e,t,n){var r=v.merge(this.constructor(),e);return r.prevObject=this,r.context=this.context,t==="find"?r.selector=this.selector+(this.selector?" ":"")+n:t&&(r.selector=this.selector+"."+t+"("+n+")"),r},each:function(e,t){return v.each(this,e,t)},ready:function(e){return v.ready.promise().done(e),this},eq:function(e){return e=+e,e===-1?this.slice(e):this.slice(e,e+1)},first:function(){return this.eq(0)},last:function(){return this.eq(-1)},slice:function(){return this.pushStack(l.apply(this,arguments),"slice",l.call(arguments).join(","))},map:function(e){return this.pushStack(v.map(this,function(t,n){return e.call(t,n,t)}))},end:function(){return this.prevObject||this.constructor(null)},push:f,sort:[].sort,splice:[].splice},v.fn.init.prototype=v.fn,v.extend=v.fn.extend=function(){var e,n,r,i,s,o,u=arguments[0]||{},a=1,f=arguments.length,l=!1;typeof u=="boolean"&&(l=u,u=arguments[1]||{},a=2),typeof u!="object"&&!v.isFunction(u)&&(u={}),f===a&&(u=this,--a);for(;a<f;a++)if((e=arguments[a])!=null)for(n in e){r=u[n],i=e[n];if(u===i)continue;l&&i&&(v.isPlainObject(i)||(s=v.isArray(i)))?(s?(s=!1,o=r&&v.isArray(r)?r:[]):o=r&&v.isPlainObject(r)?r:{},u[n]=v.extend(l,o,i)):i!==t&&(u[n]=i)}return u},v.extend({noConflict:function(t){return e.$===v&&(e.$=a),t&&e.jQuery===v&&(e.jQuery=u),v},isReady:!1,readyWait:1,holdReady:function(e){e?v.readyWait++:v.ready(!0)},ready:function(e){if(e===!0?--v.readyWait:v.isReady)return;if(!i.body)return setTimeout(v.ready,1);v.isReady=!0;if(e!==!0&&--v.readyWait>0)return;r.resolveWith(i,[v]),v.fn.trigger&&v(i).trigger("ready").off("ready")},isFunction:function(e){return v.type(e)==="function"},isArray:Array.isArray||function(e){return v.type(e)==="array"},isWindow:function(e){return e!=null&&e==e.window},isNumeric:function(e){return!isNaN(parseFloat(e))&&isFinite(e)},type:function(e){return e==null?String(e):O[h.call(e)]||"object"},isPlainObject:function(e){if(!e||v.type(e)!=="object"||e.nodeType||v.isWindow(e))return!1;try{if(e.constructor&&!p.call(e,"constructor")&&!p.call(e.constructor.prototype,"isPrototypeOf"))return!1}catch(n){return!1}var r;for(r in e);return r===t||p.call(e,r)},isEmptyObject:function(e){var t;for(t in e)return!1;return!0},error:function(e){throw new Error(e)},parseHTML:function(e,t,n){var r;return!e||typeof e!="string"?null:(typeof t=="boolean"&&(n=t,t=0),t=t||i,(r=E.exec(e))?[t.createElement(r[1])]:(r=v.buildFragment([e],t,n?null:[]),v.merge([],(r.cacheable?v.clone(r.fragment):r.fragment).childNodes)))},parseJSON:function(t){if(!t||typeof t!="string")return null;t=v.trim(t);if(e.JSON&&e.JSON.parse)return e.JSON.parse(t);if(S.test(t.replace(T,"@").replace(N,"]").replace(x,"")))return(new Function("return "+t))();v.error("Invalid JSON: "+t)},parseXML:function(n){var r,i;if(!n||typeof n!="string")return null;try{e.DOMParser?(i=new DOMParser,r=i.parseFromString(n,"text/xml")):(r=new ActiveXObject("Microsoft.XMLDOM"),r.async="false",r.loadXML(n))}catch(s){r=t}return(!r||!r.documentElement||r.getElementsByTagName("parsererror").length)&&v.error("Invalid XML: "+n),r},noop:function(){},globalEval:function(t){t&&g.test(t)&&(e.execScript||function(t){e.eval.call(e,t)})(t)},camelCase:function(e){return e.replace(C,"ms-").replace(k,L)},nodeName:function(e,t){return e.nodeName&&e.nodeName.toLowerCase()===t.toLowerCase()},each:function(e,n,r){var i,s=0,o=e.length,u=o===t||v.isFunction(e);if(r){if(u){for(i in e)if(n.apply(e[i],r)===!1)break}else for(;s<o;)if(n.apply(e[s++],r)===!1)break}else if(u){for(i in e)if(n.call(e[i],i,e[i])===!1)break}else for(;s<o;)if(n.call(e[s],s,e[s++])===!1)break;return e},trim:d&&!d.call("\ufeff\u00a0")?function(e){return e==null?"":d.call(e)}:function(e){return e==null?"":(e+"").replace(b,"")},makeArray:function(e,t){var n,r=t||[];return e!=null&&(n=v.type(e),e.length==null||n==="string"||n==="function"||n==="regexp"||v.isWindow(e)?f.call(r,e):v.merge(r,e)),r},inArray:function(e,t,n){var r;if(t){if(c)return c.call(t,e,n);r=t.length,n=n?n<0?Math.max(0,r+n):n:0;for(;n<r;n++)if(n in t&&t[n]===e)return n}return-1},merge:function(e,n){var r=n.length,i=e.length,s=0;if(typeof r=="number")for(;s<r;s++)e[i++]=n[s];else while(n[s]!==t)e[i++]=n[s++];return e.length=i,e},grep:function(e,t,n){var r,i=[],s=0,o=e.length;n=!!n;for(;s<o;s++)r=!!t(e[s],s),n!==r&&i.push(e[s]);return i},map:function(e,n,r){var i,s,o=[],u=0,a=e.length,f=e instanceof v||a!==t&&typeof a=="number"&&(a>0&&e[0]&&e[a-1]||a===0||v.isArray(e));if(f)for(;u<a;u++)i=n(e[u],u,r),i!=null&&(o[o.length]=i);else for(s in e)i=n(e[s],s,r),i!=null&&(o[o.length]=i);return o.concat.apply([],o)},guid:1,proxy:function(e,n){var r,i,s;return typeof n=="string"&&(r=e[n],n=e,e=r),v.isFunction(e)?(i=l.call(arguments,2),s=function(){return e.apply(n,i.concat(l.call(arguments)))},s.guid=e.guid=e.guid||v.guid++,s):t},access:function(e,n,r,i,s,o,u){var a,f=r==null,l=0,c=e.length;if(r&&typeof r=="object"){for(l in r)v.access(e,n,l,r[l],1,o,i);s=1}else if(i!==t){a=u===t&&v.isFunction(i),f&&(a?(a=n,n=function(e,t,n){return a.call(v(e),n)}):(n.call(e,i),n=null));if(n)for(;l<c;l++)n(e[l],r,a?i.call(e[l],l,n(e[l],r)):i,u);s=1}return s?e:f?n.call(e):c?n(e[0],r):o},now:function(){return(new Date).getTime()}}),v.ready.promise=function(t){if(!r){r=v.Deferred();if(i.readyState==="complete")setTimeout(v.ready,1);else if(i.addEventListener)i.addEventListener("DOMContentLoaded",A,!1),e.addEventListener("load",v.ready,!1);else{i.attachEvent("onreadystatechange",A),e.attachEvent("onload",v.ready);var n=!1;try{n=e.frameElement==null&&i.documentElement}catch(s){}n&&n.doScroll&&function o(){if(!v.isReady){try{n.doScroll("left")}catch(e){return setTimeout(o,50)}v.ready()}}()}}return r.promise(t)},v.each("Boolean Number String Function Array Date RegExp Object".split(" "),function(e,t){O["[object "+t+"]"]=t.toLowerCase()}),n=v(i);var M={};v.Callbacks=function(e){e=typeof e=="string"?M[e]||_(e):v.extend({},e);var n,r,i,s,o,u,a=[],f=!e.once&&[],l=function(t){n=e.memory&&t,r=!0,u=s||0,s=0,o=a.length,i=!0;for(;a&&u<o;u++)if(a[u].apply(t[0],t[1])===!1&&e.stopOnFalse){n=!1;break}i=!1,a&&(f?f.length&&l(f.shift()):n?a=[]:c.disable())},c={add:function(){if(a){var t=a.length;(function r(t){v.each(t,function(t,n){var i=v.type(n);i==="function"?(!e.unique||!c.has(n))&&a.push(n):n&&n.length&&i!=="string"&&r(n)})})(arguments),i?o=a.length:n&&(s=t,l(n))}return this},remove:function(){return a&&v.each(arguments,function(e,t){var n;while((n=v.inArray(t,a,n))>-1)a.splice(n,1),i&&(n<=o&&o--,n<=u&&u--)}),this},has:function(e){return v.inArray(e,a)>-1},empty:function(){return a=[],this},disable:function(){return a=f=n=t,this},disabled:function(){return!a},lock:function(){return f=t,n||c.disable(),this},locked:function(){return!f},fireWith:function(e,t){return t=t||[],t=[e,t.slice?t.slice():t],a&&(!r||f)&&(i?f.push(t):l(t)),this},fire:function(){return c.fireWith(this,arguments),this},fired:function(){return!!r}};return c},v.extend({Deferred:function(e){var t=[["resolve","done",v.Callbacks("once memory"),"resolved"],["reject","fail",v.Callbacks("once memory"),"rejected"],["notify","progress",v.Callbacks("memory")]],n="pending",r={state:function(){return n},always:function(){return i.done(arguments).fail(arguments),this},then:function(){var e=arguments;return v.Deferred(function(n){v.each(t,function(t,r){var s=r[0],o=e[t];i[r[1]](v.isFunction(o)?function(){var e=o.apply(this,arguments);e&&v.isFunction(e.promise)?e.promise().done(n.resolve).fail(n.reject).progress(n.notify):n[s+"With"](this===i?n:this,[e])}:n[s])}),e=null}).promise()},promise:function(e){return e!=null?v.extend(e,r):r}},i={};return r.pipe=r.then,v.each(t,function(e,s){var o=s[2],u=s[3];r[s[1]]=o.add,u&&o.add(function(){n=u},t[e^1][2].disable,t[2][2].lock),i[s[0]]=o.fire,i[s[0]+"With"]=o.fireWith}),r.promise(i),e&&e.call(i,i),i},when:function(e){var t=0,n=l.call(arguments),r=n.length,i=r!==1||e&&v.isFunction(e.promise)?r:0,s=i===1?e:v.Deferred(),o=function(e,t,n){return function(r){t[e]=this,n[e]=arguments.length>1?l.call(arguments):r,n===u?s.notifyWith(t,n):--i||s.resolveWith(t,n)}},u,a,f;if(r>1){u=new Array(r),a=new Array(r),f=new Array(r);for(;t<r;t++)n[t]&&v.isFunction(n[t].promise)?n[t].promise().done(o(t,f,n)).fail(s.reject).progress(o(t,a,u)):--i}return i||s.resolveWith(f,n),s.promise()}}),v.support=function(){var t,n,r,s,o,u,a,f,l,c,h,p=i.createElement("div");p.setAttribute("className","t"),p.innerHTML="  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>",n=p.getElementsByTagName("*"),r=p.getElementsByTagName("a")[0];if(!n||!r||!n.length)return{};s=i.createElement("select"),o=s.appendChild(i.createElement("option")),u=p.getElementsByTagName("input")[0],r.style.cssText="top:1px;float:left;opacity:.5",t={leadingWhitespace:p.firstChild.nodeType===3,tbody:!p.getElementsByTagName("tbody").length,htmlSerialize:!!p.getElementsByTagName("link").length,style:/top/.test(r.getAttribute("style")),hrefNormalized:r.getAttribute("href")==="/a",opacity:/^0.5/.test(r.style.opacity),cssFloat:!!r.style.cssFloat,checkOn:u.value==="on",optSelected:o.selected,getSetAttribute:p.className!=="t",enctype:!!i.createElement("form").enctype,html5Clone:i.createElement("nav").cloneNode(!0).outerHTML!=="<:nav></:nav>",boxModel:i.compatMode==="CSS1Compat",submitBubbles:!0,changeBubbles:!0,focusinBubbles:!1,deleteExpando:!0,noCloneEvent:!0,inlineBlockNeedsLayout:!1,shrinkWrapBlocks:!1,reliableMarginRight:!0,boxSizingReliable:!0,pixelPosition:!1},u.checked=!0,t.noCloneChecked=u.cloneNode(!0).checked,s.disabled=!0,t.optDisabled=!o.disabled;try{delete p.test}catch(d){t.deleteExpando=!1}!p.addEventListener&&p.attachEvent&&p.fireEvent&&(p.attachEvent("onclick",h=function(){t.noCloneEvent=!1}),p.cloneNode(!0).fireEvent("onclick"),p.detachEvent("onclick",h)),u=i.createElement("input"),u.value="t",u.setAttribute("type","radio"),t.radioValue=u.value==="t",u.setAttribute("checked","checked"),u.setAttribute("name","t"),p.appendChild(u),a=i.createDocumentFragment(),a.appendChild(p.lastChild),t.checkClone=a.cloneNode(!0).cloneNode(!0).lastChild.checked,t.appendChecked=u.checked,a.removeChild(u),a.appendChild(p);if(p.attachEvent)for(l in{submit:!0,change:!0,focusin:!0})f="on"+l,c=f in p,c||(p.setAttribute(f,"return;"),c=typeof p[f]=="function"),t[l+"Bubbles"]=c;return v(function(){var n,r,s,o,u="padding:0;margin:0;border:0;display:block;overflow:hidden;",a=i.getElementsByTagName("body")[0];if(!a)return;n=i.createElement("div"),n.style.cssText="visibility:hidden;border:0;width:0;height:0;position:static;top:0;margin-top:1px",a.insertBefore(n,a.firstChild),r=i.createElement("div"),n.appendChild(r),r.innerHTML="<table><tr><td></td><td>t</td></tr></table>",s=r.getElementsByTagName("td"),s[0].style.cssText="padding:0;margin:0;border:0;display:none",c=s[0].offsetHeight===0,s[0].style.display="",s[1].style.display="none",t.reliableHiddenOffsets=c&&s[0].offsetHeight===0,r.innerHTML="",r.style.cssText="box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;",t.boxSizing=r.offsetWidth===4,t.doesNotIncludeMarginInBodyOffset=a.offsetTop!==1,e.getComputedStyle&&(t.pixelPosition=(e.getComputedStyle(r,null)||{}).top!=="1%",t.boxSizingReliable=(e.getComputedStyle(r,null)||{width:"4px"}).width==="4px",o=i.createElement("div"),o.style.cssText=r.style.cssText=u,o.style.marginRight=o.style.width="0",r.style.width="1px",r.appendChild(o),t.reliableMarginRight=!parseFloat((e.getComputedStyle(o,null)||{}).marginRight)),typeof r.style.zoom!="undefined"&&(r.innerHTML="",r.style.cssText=u+"width:1px;padding:1px;display:inline;zoom:1",t.inlineBlockNeedsLayout=r.offsetWidth===3,r.style.display="block",r.style.overflow="visible",r.innerHTML="<div></div>",r.firstChild.style.width="5px",t.shrinkWrapBlocks=r.offsetWidth!==3,n.style.zoom=1),a.removeChild(n),n=r=s=o=null}),a.removeChild(p),n=r=s=o=u=a=p=null,t}();var D=/(?:\{[\s\S]*\}|\[[\s\S]*\])$/,P=/([A-Z])/g;v.extend({cache:{},deletedIds:[],uuid:0,expando:"jQuery"+(v.fn.jquery+Math.random()).replace(/\D/g,""),noData:{embed:!0,object:"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",applet:!0},hasData:function(e){return e=e.nodeType?v.cache[e[v.expando]]:e[v.expando],!!e&&!B(e)},data:function(e,n,r,i){if(!v.acceptData(e))return;var s,o,u=v.expando,a=typeof n=="string",f=e.nodeType,l=f?v.cache:e,c=f?e[u]:e[u]&&u;if((!c||!l[c]||!i&&!l[c].data)&&a&&r===t)return;c||(f?e[u]=c=v.deletedIds.pop()||v.guid++:c=u),l[c]||(l[c]={},f||(l[c].toJSON=v.noop));if(typeof n=="object"||typeof n=="function")i?l[c]=v.extend(l[c],n):l[c].data=v.extend(l[c].data,n);return s=l[c],i||(s.data||(s.data={}),s=s.data),r!==t&&(s[v.camelCase(n)]=r),a?(o=s[n],o==null&&(o=s[v.camelCase(n)])):o=s,o},removeData:function(e,t,n){if(!v.acceptData(e))return;var r,i,s,o=e.nodeType,u=o?v.cache:e,a=o?e[v.expando]:v.expando;if(!u[a])return;if(t){r=n?u[a]:u[a].data;if(r){v.isArray(t)||(t in r?t=[t]:(t=v.camelCase(t),t in r?t=[t]:t=t.split(" ")));for(i=0,s=t.length;i<s;i++)delete r[t[i]];if(!(n?B:v.isEmptyObject)(r))return}}if(!n){delete u[a].data;if(!B(u[a]))return}o?v.cleanData([e],!0):v.support.deleteExpando||u!=u.window?delete u[a]:u[a]=null},_data:function(e,t,n){return v.data(e,t,n,!0)},acceptData:function(e){var t=e.nodeName&&v.noData[e.nodeName.toLowerCase()];return!t||t!==!0&&e.getAttribute("classid")===t}}),v.fn.extend({data:function(e,n){var r,i,s,o,u,a=this[0],f=0,l=null;if(e===t){if(this.length){l=v.data(a);if(a.nodeType===1&&!v._data(a,"parsedAttrs")){s=a.attributes;for(u=s.length;f<u;f++)o=s[f].name,o.indexOf("data-")||(o=v.camelCase(o.substring(5)),H(a,o,l[o]));v._data(a,"parsedAttrs",!0)}}return l}return typeof e=="object"?this.each(function(){v.data(this,e)}):(r=e.split(".",2),r[1]=r[1]?"."+r[1]:"",i=r[1]+"!",v.access(this,function(n){if(n===t)return l=this.triggerHandler("getData"+i,[r[0]]),l===t&&a&&(l=v.data(a,e),l=H(a,e,l)),l===t&&r[1]?this.data(r[0]):l;r[1]=n,this.each(function(){var t=v(this);t.triggerHandler("setData"+i,r),v.data(this,e,n),t.triggerHandler("changeData"+i,r)})},null,n,arguments.length>1,null,!1))},removeData:function(e){return this.each(function(){v.removeData(this,e)})}}),v.extend({queue:function(e,t,n){var r;if(e)return t=(t||"fx")+"queue",r=v._data(e,t),n&&(!r||v.isArray(n)?r=v._data(e,t,v.makeArray(n)):r.push(n)),r||[]},dequeue:function(e,t){t=t||"fx";var n=v.queue(e,t),r=n.length,i=n.shift(),s=v._queueHooks(e,t),o=function(){v.dequeue(e,t)};i==="inprogress"&&(i=n.shift(),r--),i&&(t==="fx"&&n.unshift("inprogress"),delete s.stop,i.call(e,o,s)),!r&&s&&s.empty.fire()},_queueHooks:function(e,t){var n=t+"queueHooks";return v._data(e,n)||v._data(e,n,{empty:v.Callbacks("once memory").add(function(){v.removeData(e,t+"queue",!0),v.removeData(e,n,!0)})})}}),v.fn.extend({queue:function(e,n){var r=2;return typeof e!="string"&&(n=e,e="fx",r--),arguments.length<r?v.queue(this[0],e):n===t?this:this.each(function(){var t=v.queue(this,e,n);v._queueHooks(this,e),e==="fx"&&t[0]!=="inprogress"&&v.dequeue(this,e)})},dequeue:function(e){return this.each(function(){v.dequeue(this,e)})},delay:function(e,t){return e=v.fx?v.fx.speeds[e]||e:e,t=t||"fx",this.queue(t,function(t,n){var r=setTimeout(t,e);n.stop=function(){clearTimeout(r)}})},clearQueue:function(e){return this.queue(e||"fx",[])},promise:function(e,n){var r,i=1,s=v.Deferred(),o=this,u=this.length,a=function(){--i||s.resolveWith(o,[o])};typeof e!="string"&&(n=e,e=t),e=e||"fx";while(u--)r=v._data(o[u],e+"queueHooks"),r&&r.empty&&(i++,r.empty.add(a));return a(),s.promise(n)}});var j,F,I,q=/[\t\r\n]/g,R=/\r/g,U=/^(?:button|input)$/i,z=/^(?:button|input|object|select|textarea)$/i,W=/^a(?:rea|)$/i,X=/^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,V=v.support.getSetAttribute;v.fn.extend({attr:function(e,t){return v.access(this,v.attr,e,t,arguments.length>1)},removeAttr:function(e){return this.each(function(){v.removeAttr(this,e)})},prop:function(e,t){return v.access(this,v.prop,e,t,arguments.length>1)},removeProp:function(e){return e=v.propFix[e]||e,this.each(function(){try{this[e]=t,delete this[e]}catch(n){}})},addClass:function(e){var t,n,r,i,s,o,u;if(v.isFunction(e))return this.each(function(t){v(this).addClass(e.call(this,t,this.className))});if(e&&typeof e=="string"){t=e.split(y);for(n=0,r=this.length;n<r;n++){i=this[n];if(i.nodeType===1)if(!i.className&&t.length===1)i.className=e;else{s=" "+i.className+" ";for(o=0,u=t.length;o<u;o++)s.indexOf(" "+t[o]+" ")<0&&(s+=t[o]+" ");i.className=v.trim(s)}}}return this},removeClass:function(e){var n,r,i,s,o,u,a;if(v.isFunction(e))return this.each(function(t){v(this).removeClass(e.call(this,t,this.className))});if(e&&typeof e=="string"||e===t){n=(e||"").split(y);for(u=0,a=this.length;u<a;u++){i=this[u];if(i.nodeType===1&&i.className){r=(" "+i.className+" ").replace(q," ");for(s=0,o=n.length;s<o;s++)while(r.indexOf(" "+n[s]+" ")>=0)r=r.replace(" "+n[s]+" "," ");i.className=e?v.trim(r):""}}}return this},toggleClass:function(e,t){var n=typeof e,r=typeof t=="boolean";return v.isFunction(e)?this.each(function(n){v(this).toggleClass(e.call(this,n,this.className,t),t)}):this.each(function(){if(n==="string"){var i,s=0,o=v(this),u=t,a=e.split(y);while(i=a[s++])u=r?u:!o.hasClass(i),o[u?"addClass":"removeClass"](i)}else if(n==="undefined"||n==="boolean")this.className&&v._data(this,"__className__",this.className),this.className=this.className||e===!1?"":v._data(this,"__className__")||""})},hasClass:function(e){var t=" "+e+" ",n=0,r=this.length;for(;n<r;n++)if(this[n].nodeType===1&&(" "+this[n].className+" ").replace(q," ").indexOf(t)>=0)return!0;return!1},val:function(e){var n,r,i,s=this[0];if(!arguments.length){if(s)return n=v.valHooks[s.type]||v.valHooks[s.nodeName.toLowerCase()],n&&"get"in n&&(r=n.get(s,"value"))!==t?r:(r=s.value,typeof r=="string"?r.replace(R,""):r==null?"":r);return}return i=v.isFunction(e),this.each(function(r){var s,o=v(this);if(this.nodeType!==1)return;i?s=e.call(this,r,o.val()):s=e,s==null?s="":typeof s=="number"?s+="":v.isArray(s)&&(s=v.map(s,function(e){return e==null?"":e+""})),n=v.valHooks[this.type]||v.valHooks[this.nodeName.toLowerCase()];if(!n||!("set"in n)||n.set(this,s,"value")===t)this.value=s})}}),v.extend({valHooks:{option:{get:function(e){var t=e.attributes.value;return!t||t.specified?e.value:e.text}},select:{get:function(e){var t,n,r=e.options,i=e.selectedIndex,s=e.type==="select-one"||i<0,o=s?null:[],u=s?i+1:r.length,a=i<0?u:s?i:0;for(;a<u;a++){n=r[a];if((n.selected||a===i)&&(v.support.optDisabled?!n.disabled:n.getAttribute("disabled")===null)&&(!n.parentNode.disabled||!v.nodeName(n.parentNode,"optgroup"))){t=v(n).val();if(s)return t;o.push(t)}}return o},set:function(e,t){var n=v.makeArray(t);return v(e).find("option").each(function(){this.selected=v.inArray(v(this).val(),n)>=0}),n.length||(e.selectedIndex=-1),n}}},attrFn:{},attr:function(e,n,r,i){var s,o,u,a=e.nodeType;if(!e||a===3||a===8||a===2)return;if(i&&v.isFunction(v.fn[n]))return v(e)[n](r);if(typeof e.getAttribute=="undefined")return v.prop(e,n,r);u=a!==1||!v.isXMLDoc(e),u&&(n=n.toLowerCase(),o=v.attrHooks[n]||(X.test(n)?F:j));if(r!==t){if(r===null){v.removeAttr(e,n);return}return o&&"set"in o&&u&&(s=o.set(e,r,n))!==t?s:(e.setAttribute(n,r+""),r)}return o&&"get"in o&&u&&(s=o.get(e,n))!==null?s:(s=e.getAttribute(n),s===null?t:s)},removeAttr:function(e,t){var n,r,i,s,o=0;if(t&&e.nodeType===1){r=t.split(y);for(;o<r.length;o++)i=r[o],i&&(n=v.propFix[i]||i,s=X.test(i),s||v.attr(e,i,""),e.removeAttribute(V?i:n),s&&n in e&&(e[n]=!1))}},attrHooks:{type:{set:function(e,t){if(U.test(e.nodeName)&&e.parentNode)v.error("type property can't be changed");else if(!v.support.radioValue&&t==="radio"&&v.nodeName(e,"input")){var n=e.value;return e.setAttribute("type",t),n&&(e.value=n),t}}},value:{get:function(e,t){return j&&v.nodeName(e,"button")?j.get(e,t):t in e?e.value:null},set:function(e,t,n){if(j&&v.nodeName(e,"button"))return j.set(e,t,n);e.value=t}}},propFix:{tabindex:"tabIndex",readonly:"readOnly","for":"htmlFor","class":"className",maxlength:"maxLength",cellspacing:"cellSpacing",cellpadding:"cellPadding",rowspan:"rowSpan",colspan:"colSpan",usemap:"useMap",frameborder:"frameBorder",contenteditable:"contentEditable"},prop:function(e,n,r){var i,s,o,u=e.nodeType;if(!e||u===3||u===8||u===2)return;return o=u!==1||!v.isXMLDoc(e),o&&(n=v.propFix[n]||n,s=v.propHooks[n]),r!==t?s&&"set"in s&&(i=s.set(e,r,n))!==t?i:e[n]=r:s&&"get"in s&&(i=s.get(e,n))!==null?i:e[n]},propHooks:{tabIndex:{get:function(e){var n=e.getAttributeNode("tabindex");return n&&n.specified?parseInt(n.value,10):z.test(e.nodeName)||W.test(e.nodeName)&&e.href?0:t}}}}),F={get:function(e,n){var r,i=v.prop(e,n);return i===!0||typeof i!="boolean"&&(r=e.getAttributeNode(n))&&r.nodeValue!==!1?n.toLowerCase():t},set:function(e,t,n){var r;return t===!1?v.removeAttr(e,n):(r=v.propFix[n]||n,r in e&&(e[r]=!0),e.setAttribute(n,n.toLowerCase())),n}},V||(I={name:!0,id:!0,coords:!0},j=v.valHooks.button={get:function(e,n){var r;return r=e.getAttributeNode(n),r&&(I[n]?r.value!=="":r.specified)?r.value:t},set:function(e,t,n){var r=e.getAttributeNode(n);return r||(r=i.createAttribute(n),e.setAttributeNode(r)),r.value=t+""}},v.each(["width","height"],function(e,t){v.attrHooks[t]=v.extend(v.attrHooks[t],{set:function(e,n){if(n==="")return e.setAttribute(t,"auto"),n}})}),v.attrHooks.contenteditable={get:j.get,set:function(e,t,n){t===""&&(t="false"),j.set(e,t,n)}}),v.support.hrefNormalized||v.each(["href","src","width","height"],function(e,n){v.attrHooks[n]=v.extend(v.attrHooks[n],{get:function(e){var r=e.getAttribute(n,2);return r===null?t:r}})}),v.support.style||(v.attrHooks.style={get:function(e){return e.style.cssText.toLowerCase()||t},set:function(e,t){return e.style.cssText=t+""}}),v.support.optSelected||(v.propHooks.selected=v.extend(v.propHooks.selected,{get:function(e){var t=e.parentNode;return t&&(t.selectedIndex,t.parentNode&&t.parentNode.selectedIndex),null}})),v.support.enctype||(v.propFix.enctype="encoding"),v.support.checkOn||v.each(["radio","checkbox"],function(){v.valHooks[this]={get:function(e){return e.getAttribute("value")===null?"on":e.value}}}),v.each(["radio","checkbox"],function(){v.valHooks[this]=v.extend(v.valHooks[this],{set:function(e,t){if(v.isArray(t))return e.checked=v.inArray(v(e).val(),t)>=0}})});var $=/^(?:textarea|input|select)$/i,J=/^([^\.]*|)(?:\.(.+)|)$/,K=/(?:^|\s)hover(\.\S+|)\b/,Q=/^key/,G=/^(?:mouse|contextmenu)|click/,Y=/^(?:focusinfocus|focusoutblur)$/,Z=function(e){return v.event.special.hover?e:e.replace(K,"mouseenter$1 mouseleave$1")};v.event={add:function(e,n,r,i,s){var o,u,a,f,l,c,h,p,d,m,g;if(e.nodeType===3||e.nodeType===8||!n||!r||!(o=v._data(e)))return;r.handler&&(d=r,r=d.handler,s=d.selector),r.guid||(r.guid=v.guid++),a=o.events,a||(o.events=a={}),u=o.handle,u||(o.handle=u=function(e){return typeof v=="undefined"||!!e&&v.event.triggered===e.type?t:v.event.dispatch.apply(u.elem,arguments)},u.elem=e),n=v.trim(Z(n)).split(" ");for(f=0;f<n.length;f++){l=J.exec(n[f])||[],c=l[1],h=(l[2]||"").split(".").sort(),g=v.event.special[c]||{},c=(s?g.delegateType:g.bindType)||c,g=v.event.special[c]||{},p=v.extend({type:c,origType:l[1],data:i,handler:r,guid:r.guid,selector:s,needsContext:s&&v.expr.match.needsContext.test(s),namespace:h.join(".")},d),m=a[c];if(!m){m=a[c]=[],m.delegateCount=0;if(!g.setup||g.setup.call(e,i,h,u)===!1)e.addEventListener?e.addEventListener(c,u,!1):e.attachEvent&&e.attachEvent("on"+c,u)}g.add&&(g.add.call(e,p),p.handler.guid||(p.handler.guid=r.guid)),s?m.splice(m.delegateCount++,0,p):m.push(p),v.event.global[c]=!0}e=null},global:{},remove:function(e,t,n,r,i){var s,o,u,a,f,l,c,h,p,d,m,g=v.hasData(e)&&v._data(e);if(!g||!(h=g.events))return;t=v.trim(Z(t||"")).split(" ");for(s=0;s<t.length;s++){o=J.exec(t[s])||[],u=a=o[1],f=o[2];if(!u){for(u in h)v.event.remove(e,u+t[s],n,r,!0);continue}p=v.event.special[u]||{},u=(r?p.delegateType:p.bindType)||u,d=h[u]||[],l=d.length,f=f?new RegExp("(^|\\.)"+f.split(".").sort().join("\\.(?:.*\\.|)")+"(\\.|$)"):null;for(c=0;c<d.length;c++)m=d[c],(i||a===m.origType)&&(!n||n.guid===m.guid)&&(!f||f.test(m.namespace))&&(!r||r===m.selector||r==="**"&&m.selector)&&(d.splice(c--,1),m.selector&&d.delegateCount--,p.remove&&p.remove.call(e,m));d.length===0&&l!==d.length&&((!p.teardown||p.teardown.call(e,f,g.handle)===!1)&&v.removeEvent(e,u,g.handle),delete h[u])}v.isEmptyObject(h)&&(delete g.handle,v.removeData(e,"events",!0))},customEvent:{getData:!0,setData:!0,changeData:!0},trigger:function(n,r,s,o){if(!s||s.nodeType!==3&&s.nodeType!==8){var u,a,f,l,c,h,p,d,m,g,y=n.type||n,b=[];if(Y.test(y+v.event.triggered))return;y.indexOf("!")>=0&&(y=y.slice(0,-1),a=!0),y.indexOf(".")>=0&&(b=y.split("."),y=b.shift(),b.sort());if((!s||v.event.customEvent[y])&&!v.event.global[y])return;n=typeof n=="object"?n[v.expando]?n:new v.Event(y,n):new v.Event(y),n.type=y,n.isTrigger=!0,n.exclusive=a,n.namespace=b.join("."),n.namespace_re=n.namespace?new RegExp("(^|\\.)"+b.join("\\.(?:.*\\.|)")+"(\\.|$)"):null,h=y.indexOf(":")<0?"on"+y:"";if(!s){u=v.cache;for(f in u)u[f].events&&u[f].events[y]&&v.event.trigger(n,r,u[f].handle.elem,!0);return}n.result=t,n.target||(n.target=s),r=r!=null?v.makeArray(r):[],r.unshift(n),p=v.event.special[y]||{};if(p.trigger&&p.trigger.apply(s,r)===!1)return;m=[[s,p.bindType||y]];if(!o&&!p.noBubble&&!v.isWindow(s)){g=p.delegateType||y,l=Y.test(g+y)?s:s.parentNode;for(c=s;l;l=l.parentNode)m.push([l,g]),c=l;c===(s.ownerDocument||i)&&m.push([c.defaultView||c.parentWindow||e,g])}for(f=0;f<m.length&&!n.isPropagationStopped();f++)l=m[f][0],n.type=m[f][1],d=(v._data(l,"events")||{})[n.type]&&v._data(l,"handle"),d&&d.apply(l,r),d=h&&l[h],d&&v.acceptData(l)&&d.apply&&d.apply(l,r)===!1&&n.preventDefault();return n.type=y,!o&&!n.isDefaultPrevented()&&(!p._default||p._default.apply(s.ownerDocument,r)===!1)&&(y!=="click"||!v.nodeName(s,"a"))&&v.acceptData(s)&&h&&s[y]&&(y!=="focus"&&y!=="blur"||n.target.offsetWidth!==0)&&!v.isWindow(s)&&(c=s[h],c&&(s[h]=null),v.event.triggered=y,s[y](),v.event.triggered=t,c&&(s[h]=c)),n.result}return},dispatch:function(n){n=v.event.fix(n||e.event);var r,i,s,o,u,a,f,c,h,p,d=(v._data(this,"events")||{})[n.type]||[],m=d.delegateCount,g=l.call(arguments),y=!n.exclusive&&!n.namespace,b=v.event.special[n.type]||{},w=[];g[0]=n,n.delegateTarget=this;if(b.preDispatch&&b.preDispatch.call(this,n)===!1)return;if(m&&(!n.button||n.type!=="click"))for(s=n.target;s!=this;s=s.parentNode||this)if(s.disabled!==!0||n.type!=="click"){u={},f=[];for(r=0;r<m;r++)c=d[r],h=c.selector,u[h]===t&&(u[h]=c.needsContext?v(h,this).index(s)>=0:v.find(h,this,null,[s]).length),u[h]&&f.push(c);f.length&&w.push({elem:s,matches:f})}d.length>m&&w.push({elem:this,matches:d.slice(m)});for(r=0;r<w.length&&!n.isPropagationStopped();r++){a=w[r],n.currentTarget=a.elem;for(i=0;i<a.matches.length&&!n.isImmediatePropagationStopped();i++){c=a.matches[i];if(y||!n.namespace&&!c.namespace||n.namespace_re&&n.namespace_re.test(c.namespace))n.data=c.data,n.handleObj=c,o=((v.event.special[c.origType]||{}).handle||c.handler).apply(a.elem,g),o!==t&&(n.result=o,o===!1&&(n.preventDefault(),n.stopPropagation()))}}return b.postDispatch&&b.postDispatch.call(this,n),n.result},props:"attrChange attrName relatedNode srcElement altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),fixHooks:{},keyHooks:{props:"char charCode key keyCode".split(" "),filter:function(e,t){return e.which==null&&(e.which=t.charCode!=null?t.charCode:t.keyCode),e}},mouseHooks:{props:"button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),filter:function(e,n){var r,s,o,u=n.button,a=n.fromElement;return e.pageX==null&&n.clientX!=null&&(r=e.target.ownerDocument||i,s=r.documentElement,o=r.body,e.pageX=n.clientX+(s&&s.scrollLeft||o&&o.scrollLeft||0)-(s&&s.clientLeft||o&&o.clientLeft||0),e.pageY=n.clientY+(s&&s.scrollTop||o&&o.scrollTop||0)-(s&&s.clientTop||o&&o.clientTop||0)),!e.relatedTarget&&a&&(e.relatedTarget=a===e.target?n.toElement:a),!e.which&&u!==t&&(e.which=u&1?1:u&2?3:u&4?2:0),e}},fix:function(e){if(e[v.expando])return e;var t,n,r=e,s=v.event.fixHooks[e.type]||{},o=s.props?this.props.concat(s.props):this.props;e=v.Event(r);for(t=o.length;t;)n=o[--t],e[n]=r[n];return e.target||(e.target=r.srcElement||i),e.target.nodeType===3&&(e.target=e.target.parentNode),e.metaKey=!!e.metaKey,s.filter?s.filter(e,r):e},special:{load:{noBubble:!0},focus:{delegateType:"focusin"},blur:{delegateType:"focusout"},beforeunload:{setup:function(e,t,n){v.isWindow(this)&&(this.onbeforeunload=n)},teardown:function(e,t){this.onbeforeunload===t&&(this.onbeforeunload=null)}}},simulate:function(e,t,n,r){var i=v.extend(new v.Event,n,{type:e,isSimulated:!0,originalEvent:{}});r?v.event.trigger(i,null,t):v.event.dispatch.call(t,i),i.isDefaultPrevented()&&n.preventDefault()}},v.event.handle=v.event.dispatch,v.removeEvent=i.removeEventListener?function(e,t,n){e.removeEventListener&&e.removeEventListener(t,n,!1)}:function(e,t,n){var r="on"+t;e.detachEvent&&(typeof e[r]=="undefined"&&(e[r]=null),e.detachEvent(r,n))},v.Event=function(e,t){if(!(this instanceof v.Event))return new v.Event(e,t);e&&e.type?(this.originalEvent=e,this.type=e.type,this.isDefaultPrevented=e.defaultPrevented||e.returnValue===!1||e.getPreventDefault&&e.getPreventDefault()?tt:et):this.type=e,t&&v.extend(this,t),this.timeStamp=e&&e.timeStamp||v.now(),this[v.expando]=!0},v.Event.prototype={preventDefault:function(){this.isDefaultPrevented=tt;var e=this.originalEvent;if(!e)return;e.preventDefault?e.preventDefault():e.returnValue=!1},stopPropagation:function(){this.isPropagationStopped=tt;var e=this.originalEvent;if(!e)return;e.stopPropagation&&e.stopPropagation(),e.cancelBubble=!0},stopImmediatePropagation:function(){this.isImmediatePropagationStopped=tt,this.stopPropagation()},isDefaultPrevented:et,isPropagationStopped:et,isImmediatePropagationStopped:et},v.each({mouseenter:"mouseover",mouseleave:"mouseout"},function(e,t){v.event.special[e]={delegateType:t,bindType:t,handle:function(e){var n,r=this,i=e.relatedTarget,s=e.handleObj,o=s.selector;if(!i||i!==r&&!v.contains(r,i))e.type=s.origType,n=s.handler.apply(this,arguments),e.type=t;return n}}}),v.support.submitBubbles||(v.event.special.submit={setup:function(){if(v.nodeName(this,"form"))return!1;v.event.add(this,"click._submit keypress._submit",function(e){var n=e.target,r=v.nodeName(n,"input")||v.nodeName(n,"button")?n.form:t;r&&!v._data(r,"_submit_attached")&&(v.event.add(r,"submit._submit",function(e){e._submit_bubble=!0}),v._data(r,"_submit_attached",!0))})},postDispatch:function(e){e._submit_bubble&&(delete e._submit_bubble,this.parentNode&&!e.isTrigger&&v.event.simulate("submit",this.parentNode,e,!0))},teardown:function(){if(v.nodeName(this,"form"))return!1;v.event.remove(this,"._submit")}}),v.support.changeBubbles||(v.event.special.change={setup:function(){if($.test(this.nodeName)){if(this.type==="checkbox"||this.type==="radio")v.event.add(this,"propertychange._change",function(e){e.originalEvent.propertyName==="checked"&&(this._just_changed=!0)}),v.event.add(this,"click._change",function(e){this._just_changed&&!e.isTrigger&&(this._just_changed=!1),v.event.simulate("change",this,e,!0)});return!1}v.event.add(this,"beforeactivate._change",function(e){var t=e.target;$.test(t.nodeName)&&!v._data(t,"_change_attached")&&(v.event.add(t,"change._change",function(e){this.parentNode&&!e.isSimulated&&!e.isTrigger&&v.event.simulate("change",this.parentNode,e,!0)}),v._data(t,"_change_attached",!0))})},handle:function(e){var t=e.target;if(this!==t||e.isSimulated||e.isTrigger||t.type!=="radio"&&t.type!=="checkbox")return e.handleObj.handler.apply(this,arguments)},teardown:function(){return v.event.remove(this,"._change"),!$.test(this.nodeName)}}),v.support.focusinBubbles||v.each({focus:"focusin",blur:"focusout"},function(e,t){var n=0,r=function(e){v.event.simulate(t,e.target,v.event.fix(e),!0)};v.event.special[t]={setup:function(){n++===0&&i.addEventListener(e,r,!0)},teardown:function(){--n===0&&i.removeEventListener(e,r,!0)}}}),v.fn.extend({on:function(e,n,r,i,s){var o,u;if(typeof e=="object"){typeof n!="string"&&(r=r||n,n=t);for(u in e)this.on(u,n,r,e[u],s);return this}r==null&&i==null?(i=n,r=n=t):i==null&&(typeof n=="string"?(i=r,r=t):(i=r,r=n,n=t));if(i===!1)i=et;else if(!i)return this;return s===1&&(o=i,i=function(e){return v().off(e),o.apply(this,arguments)},i.guid=o.guid||(o.guid=v.guid++)),this.each(function(){v.event.add(this,e,i,r,n)})},one:function(e,t,n,r){return this.on(e,t,n,r,1)},off:function(e,n,r){var i,s;if(e&&e.preventDefault&&e.handleObj)return i=e.handleObj,v(e.delegateTarget).off(i.namespace?i.origType+"."+i.namespace:i.origType,i.selector,i.handler),this;if(typeof e=="object"){for(s in e)this.off(s,n,e[s]);return this}if(n===!1||typeof n=="function")r=n,n=t;return r===!1&&(r=et),this.each(function(){v.event.remove(this,e,r,n)})},bind:function(e,t,n){return this.on(e,null,t,n)},unbind:function(e,t){return this.off(e,null,t)},live:function(e,t,n){return v(this.context).on(e,this.selector,t,n),this},die:function(e,t){return v(this.context).off(e,this.selector||"**",t),this},delegate:function(e,t,n,r){return this.on(t,e,n,r)},undelegate:function(e,t,n){return arguments.length===1?this.off(e,"**"):this.off(t,e||"**",n)},trigger:function(e,t){return this.each(function(){v.event.trigger(e,t,this)})},triggerHandler:function(e,t){if(this[0])return v.event.trigger(e,t,this[0],!0)},toggle:function(e){var t=arguments,n=e.guid||v.guid++,r=0,i=function(n){var i=(v._data(this,"lastToggle"+e.guid)||0)%r;return v._data(this,"lastToggle"+e.guid,i+1),n.preventDefault(),t[i].apply(this,arguments)||!1};i.guid=n;while(r<t.length)t[r++].guid=n;return this.click(i)},hover:function(e,t){return this.mouseenter(e).mouseleave(t||e)}}),v.each("blur focus focusin focusout load resize scroll unload click dblclick mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave change select submit keydown keypress keyup error contextmenu".split(" "),function(e,t){v.fn[t]=function(e,n){return n==null&&(n=e,e=null),arguments.length>0?this.on(t,null,e,n):this.trigger(t)},Q.test(t)&&(v.event.fixHooks[t]=v.event.keyHooks),G.test(t)&&(v.event.fixHooks[t]=v.event.mouseHooks)}),function(e,t){function nt(e,t,n,r){n=n||[],t=t||g;var i,s,a,f,l=t.nodeType;if(!e||typeof e!="string")return n;if(l!==1&&l!==9)return[];a=o(t);if(!a&&!r)if(i=R.exec(e))if(f=i[1]){if(l===9){s=t.getElementById(f);if(!s||!s.parentNode)return n;if(s.id===f)return n.push(s),n}else if(t.ownerDocument&&(s=t.ownerDocument.getElementById(f))&&u(t,s)&&s.id===f)return n.push(s),n}else{if(i[2])return S.apply(n,x.call(t.getElementsByTagName(e),0)),n;if((f=i[3])&&Z&&t.getElementsByClassName)return S.apply(n,x.call(t.getElementsByClassName(f),0)),n}return vt(e.replace(j,"$1"),t,n,r,a)}function rt(e){return function(t){var n=t.nodeName.toLowerCase();return n==="input"&&t.type===e}}function it(e){return function(t){var n=t.nodeName.toLowerCase();return(n==="input"||n==="button")&&t.type===e}}function st(e){return N(function(t){return t=+t,N(function(n,r){var i,s=e([],n.length,t),o=s.length;while(o--)n[i=s[o]]&&(n[i]=!(r[i]=n[i]))})})}function ot(e,t,n){if(e===t)return n;var r=e.nextSibling;while(r){if(r===t)return-1;r=r.nextSibling}return 1}function ut(e,t){var n,r,s,o,u,a,f,l=L[d][e+" "];if(l)return t?0:l.slice(0);u=e,a=[],f=i.preFilter;while(u){if(!n||(r=F.exec(u)))r&&(u=u.slice(r[0].length)||u),a.push(s=[]);n=!1;if(r=I.exec(u))s.push(n=new m(r.shift())),u=u.slice(n.length),n.type=r[0].replace(j," ");for(o in i.filter)(r=J[o].exec(u))&&(!f[o]||(r=f[o](r)))&&(s.push(n=new m(r.shift())),u=u.slice(n.length),n.type=o,n.matches=r);if(!n)break}return t?u.length:u?nt.error(e):L(e,a).slice(0)}function at(e,t,r){var i=t.dir,s=r&&t.dir==="parentNode",o=w++;return t.first?function(t,n,r){while(t=t[i])if(s||t.nodeType===1)return e(t,n,r)}:function(t,r,u){if(!u){var a,f=b+" "+o+" ",l=f+n;while(t=t[i])if(s||t.nodeType===1){if((a=t[d])===l)return t.sizset;if(typeof a=="string"&&a.indexOf(f)===0){if(t.sizset)return t}else{t[d]=l;if(e(t,r,u))return t.sizset=!0,t;t.sizset=!1}}}else while(t=t[i])if(s||t.nodeType===1)if(e(t,r,u))return t}}function ft(e){return e.length>1?function(t,n,r){var i=e.length;while(i--)if(!e[i](t,n,r))return!1;return!0}:e[0]}function lt(e,t,n,r,i){var s,o=[],u=0,a=e.length,f=t!=null;for(;u<a;u++)if(s=e[u])if(!n||n(s,r,i))o.push(s),f&&t.push(u);return o}function ct(e,t,n,r,i,s){return r&&!r[d]&&(r=ct(r)),i&&!i[d]&&(i=ct(i,s)),N(function(s,o,u,a){var f,l,c,h=[],p=[],d=o.length,v=s||dt(t||"*",u.nodeType?[u]:u,[]),m=e&&(s||!t)?lt(v,h,e,u,a):v,g=n?i||(s?e:d||r)?[]:o:m;n&&n(m,g,u,a);if(r){f=lt(g,p),r(f,[],u,a),l=f.length;while(l--)if(c=f[l])g[p[l]]=!(m[p[l]]=c)}if(s){if(i||e){if(i){f=[],l=g.length;while(l--)(c=g[l])&&f.push(m[l]=c);i(null,g=[],f,a)}l=g.length;while(l--)(c=g[l])&&(f=i?T.call(s,c):h[l])>-1&&(s[f]=!(o[f]=c))}}else g=lt(g===o?g.splice(d,g.length):g),i?i(null,o,g,a):S.apply(o,g)})}function ht(e){var t,n,r,s=e.length,o=i.relative[e[0].type],u=o||i.relative[" "],a=o?1:0,f=at(function(e){return e===t},u,!0),l=at(function(e){return T.call(t,e)>-1},u,!0),h=[function(e,n,r){return!o&&(r||n!==c)||((t=n).nodeType?f(e,n,r):l(e,n,r))}];for(;a<s;a++)if(n=i.relative[e[a].type])h=[at(ft(h),n)];else{n=i.filter[e[a].type].apply(null,e[a].matches);if(n[d]){r=++a;for(;r<s;r++)if(i.relative[e[r].type])break;return ct(a>1&&ft(h),a>1&&e.slice(0,a-1).join("").replace(j,"$1"),n,a<r&&ht(e.slice(a,r)),r<s&&ht(e=e.slice(r)),r<s&&e.join(""))}h.push(n)}return ft(h)}function pt(e,t){var r=t.length>0,s=e.length>0,o=function(u,a,f,l,h){var p,d,v,m=[],y=0,w="0",x=u&&[],T=h!=null,N=c,C=u||s&&i.find.TAG("*",h&&a.parentNode||a),k=b+=N==null?1:Math.E;T&&(c=a!==g&&a,n=o.el);for(;(p=C[w])!=null;w++){if(s&&p){for(d=0;v=e[d];d++)if(v(p,a,f)){l.push(p);break}T&&(b=k,n=++o.el)}r&&((p=!v&&p)&&y--,u&&x.push(p))}y+=w;if(r&&w!==y){for(d=0;v=t[d];d++)v(x,m,a,f);if(u){if(y>0)while(w--)!x[w]&&!m[w]&&(m[w]=E.call(l));m=lt(m)}S.apply(l,m),T&&!u&&m.length>0&&y+t.length>1&&nt.uniqueSort(l)}return T&&(b=k,c=N),x};return o.el=0,r?N(o):o}function dt(e,t,n){var r=0,i=t.length;for(;r<i;r++)nt(e,t[r],n);return n}function vt(e,t,n,r,s){var o,u,f,l,c,h=ut(e),p=h.length;if(!r&&h.length===1){u=h[0]=h[0].slice(0);if(u.length>2&&(f=u[0]).type==="ID"&&t.nodeType===9&&!s&&i.relative[u[1].type]){t=i.find.ID(f.matches[0].replace($,""),t,s)[0];if(!t)return n;e=e.slice(u.shift().length)}for(o=J.POS.test(e)?-1:u.length-1;o>=0;o--){f=u[o];if(i.relative[l=f.type])break;if(c=i.find[l])if(r=c(f.matches[0].replace($,""),z.test(u[0].type)&&t.parentNode||t,s)){u.splice(o,1),e=r.length&&u.join("");if(!e)return S.apply(n,x.call(r,0)),n;break}}}return a(e,h)(r,t,s,n,z.test(e)),n}function mt(){}var n,r,i,s,o,u,a,f,l,c,h=!0,p="undefined",d=("sizcache"+Math.random()).replace(".",""),m=String,g=e.document,y=g.documentElement,b=0,w=0,E=[].pop,S=[].push,x=[].slice,T=[].indexOf||function(e){var t=0,n=this.length;for(;t<n;t++)if(this[t]===e)return t;return-1},N=function(e,t){return e[d]=t==null||t,e},C=function(){var e={},t=[];return N(function(n,r){return t.push(n)>i.cacheLength&&delete e[t.shift()],e[n+" "]=r},e)},k=C(),L=C(),A=C(),O="[\\x20\\t\\r\\n\\f]",M="(?:\\\\.|[-\\w]|[^\\x00-\\xa0])+",_=M.replace("w","w#"),D="([*^$|!~]?=)",P="\\["+O+"*("+M+")"+O+"*(?:"+D+O+"*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|("+_+")|)|)"+O+"*\\]",H=":("+M+")(?:\\((?:(['\"])((?:\\\\.|[^\\\\])*?)\\2|([^()[\\]]*|(?:(?:"+P+")|[^:]|\\\\.)*|.*))\\)|)",B=":(even|odd|eq|gt|lt|nth|first|last)(?:\\("+O+"*((?:-\\d)?\\d*)"+O+"*\\)|)(?=[^-]|$)",j=new RegExp("^"+O+"+|((?:^|[^\\\\])(?:\\\\.)*)"+O+"+$","g"),F=new RegExp("^"+O+"*,"+O+"*"),I=new RegExp("^"+O+"*([\\x20\\t\\r\\n\\f>+~])"+O+"*"),q=new RegExp(H),R=/^(?:#([\w\-]+)|(\w+)|\.([\w\-]+))$/,U=/^:not/,z=/[\x20\t\r\n\f]*[+~]/,W=/:not\($/,X=/h\d/i,V=/input|select|textarea|button/i,$=/\\(?!\\)/g,J={ID:new RegExp("^#("+M+")"),CLASS:new RegExp("^\\.("+M+")"),NAME:new RegExp("^\\[name=['\"]?("+M+")['\"]?\\]"),TAG:new RegExp("^("+M.replace("w","w*")+")"),ATTR:new RegExp("^"+P),PSEUDO:new RegExp("^"+H),POS:new RegExp(B,"i"),CHILD:new RegExp("^:(only|nth|first|last)-child(?:\\("+O+"*(even|odd|(([+-]|)(\\d*)n|)"+O+"*(?:([+-]|)"+O+"*(\\d+)|))"+O+"*\\)|)","i"),needsContext:new RegExp("^"+O+"*[>+~]|"+B,"i")},K=function(e){var t=g.createElement("div");try{return e(t)}catch(n){return!1}finally{t=null}},Q=K(function(e){return e.appendChild(g.createComment("")),!e.getElementsByTagName("*").length}),G=K(function(e){return e.innerHTML="<a href='#'></a>",e.firstChild&&typeof e.firstChild.getAttribute!==p&&e.firstChild.getAttribute("href")==="#"}),Y=K(function(e){e.innerHTML="<select></select>";var t=typeof e.lastChild.getAttribute("multiple");return t!=="boolean"&&t!=="string"}),Z=K(function(e){return e.innerHTML="<div class='hidden e'></div><div class='hidden'></div>",!e.getElementsByClassName||!e.getElementsByClassName("e").length?!1:(e.lastChild.className="e",e.getElementsByClassName("e").length===2)}),et=K(function(e){e.id=d+0,e.innerHTML="<a name='"+d+"'></a><div name='"+d+"'></div>",y.insertBefore(e,y.firstChild);var t=g.getElementsByName&&g.getElementsByName(d).length===2+g.getElementsByName(d+0).length;return r=!g.getElementById(d),y.removeChild(e),t});try{x.call(y.childNodes,0)[0].nodeType}catch(tt){x=function(e){var t,n=[];for(;t=this[e];e++)n.push(t);return n}}nt.matches=function(e,t){return nt(e,null,null,t)},nt.matchesSelector=function(e,t){return nt(t,null,null,[e]).length>0},s=nt.getText=function(e){var t,n="",r=0,i=e.nodeType;if(i){if(i===1||i===9||i===11){if(typeof e.textContent=="string")return e.textContent;for(e=e.firstChild;e;e=e.nextSibling)n+=s(e)}else if(i===3||i===4)return e.nodeValue}else for(;t=e[r];r++)n+=s(t);return n},o=nt.isXML=function(e){var t=e&&(e.ownerDocument||e).documentElement;return t?t.nodeName!=="HTML":!1},u=nt.contains=y.contains?function(e,t){var n=e.nodeType===9?e.documentElement:e,r=t&&t.parentNode;return e===r||!!(r&&r.nodeType===1&&n.contains&&n.contains(r))}:y.compareDocumentPosition?function(e,t){return t&&!!(e.compareDocumentPosition(t)&16)}:function(e,t){while(t=t.parentNode)if(t===e)return!0;return!1},nt.attr=function(e,t){var n,r=o(e);return r||(t=t.toLowerCase()),(n=i.attrHandle[t])?n(e):r||Y?e.getAttribute(t):(n=e.getAttributeNode(t),n?typeof e[t]=="boolean"?e[t]?t:null:n.specified?n.value:null:null)},i=nt.selectors={cacheLength:50,createPseudo:N,match:J,attrHandle:G?{}:{href:function(e){return e.getAttribute("href",2)},type:function(e){return e.getAttribute("type")}},find:{ID:r?function(e,t,n){if(typeof t.getElementById!==p&&!n){var r=t.getElementById(e);return r&&r.parentNode?[r]:[]}}:function(e,n,r){if(typeof n.getElementById!==p&&!r){var i=n.getElementById(e);return i?i.id===e||typeof i.getAttributeNode!==p&&i.getAttributeNode("id").value===e?[i]:t:[]}},TAG:Q?function(e,t){if(typeof t.getElementsByTagName!==p)return t.getElementsByTagName(e)}:function(e,t){var n=t.getElementsByTagName(e);if(e==="*"){var r,i=[],s=0;for(;r=n[s];s++)r.nodeType===1&&i.push(r);return i}return n},NAME:et&&function(e,t){if(typeof t.getElementsByName!==p)return t.getElementsByName(name)},CLASS:Z&&function(e,t,n){if(typeof t.getElementsByClassName!==p&&!n)return t.getElementsByClassName(e)}},relative:{">":{dir:"parentNode",first:!0}," ":{dir:"parentNode"},"+":{dir:"previousSibling",first:!0},"~":{dir:"previousSibling"}},preFilter:{ATTR:function(e){return e[1]=e[1].replace($,""),e[3]=(e[4]||e[5]||"").replace($,""),e[2]==="~="&&(e[3]=" "+e[3]+" "),e.slice(0,4)},CHILD:function(e){return e[1]=e[1].toLowerCase(),e[1]==="nth"?(e[2]||nt.error(e[0]),e[3]=+(e[3]?e[4]+(e[5]||1):2*(e[2]==="even"||e[2]==="odd")),e[4]=+(e[6]+e[7]||e[2]==="odd")):e[2]&&nt.error(e[0]),e},PSEUDO:function(e){var t,n;if(J.CHILD.test(e[0]))return null;if(e[3])e[2]=e[3];else if(t=e[4])q.test(t)&&(n=ut(t,!0))&&(n=t.indexOf(")",t.length-n)-t.length)&&(t=t.slice(0,n),e[0]=e[0].slice(0,n)),e[2]=t;return e.slice(0,3)}},filter:{ID:r?function(e){return e=e.replace($,""),function(t){return t.getAttribute("id")===e}}:function(e){return e=e.replace($,""),function(t){var n=typeof t.getAttributeNode!==p&&t.getAttributeNode("id");return n&&n.value===e}},TAG:function(e){return e==="*"?function(){return!0}:(e=e.replace($,"").toLowerCase(),function(t){return t.nodeName&&t.nodeName.toLowerCase()===e})},CLASS:function(e){var t=k[d][e+" "];return t||(t=new RegExp("(^|"+O+")"+e+"("+O+"|$)"))&&k(e,function(e){return t.test(e.className||typeof e.getAttribute!==p&&e.getAttribute("class")||"")})},ATTR:function(e,t,n){return function(r,i){var s=nt.attr(r,e);return s==null?t==="!=":t?(s+="",t==="="?s===n:t==="!="?s!==n:t==="^="?n&&s.indexOf(n)===0:t==="*="?n&&s.indexOf(n)>-1:t==="$="?n&&s.substr(s.length-n.length)===n:t==="~="?(" "+s+" ").indexOf(n)>-1:t==="|="?s===n||s.substr(0,n.length+1)===n+"-":!1):!0}},CHILD:function(e,t,n,r){return e==="nth"?function(e){var t,i,s=e.parentNode;if(n===1&&r===0)return!0;if(s){i=0;for(t=s.firstChild;t;t=t.nextSibling)if(t.nodeType===1){i++;if(e===t)break}}return i-=r,i===n||i%n===0&&i/n>=0}:function(t){var n=t;switch(e){case"only":case"first":while(n=n.previousSibling)if(n.nodeType===1)return!1;if(e==="first")return!0;n=t;case"last":while(n=n.nextSibling)if(n.nodeType===1)return!1;return!0}}},PSEUDO:function(e,t){var n,r=i.pseudos[e]||i.setFilters[e.toLowerCase()]||nt.error("unsupported pseudo: "+e);return r[d]?r(t):r.length>1?(n=[e,e,"",t],i.setFilters.hasOwnProperty(e.toLowerCase())?N(function(e,n){var i,s=r(e,t),o=s.length;while(o--)i=T.call(e,s[o]),e[i]=!(n[i]=s[o])}):function(e){return r(e,0,n)}):r}},pseudos:{not:N(function(e){var t=[],n=[],r=a(e.replace(j,"$1"));return r[d]?N(function(e,t,n,i){var s,o=r(e,null,i,[]),u=e.length;while(u--)if(s=o[u])e[u]=!(t[u]=s)}):function(e,i,s){return t[0]=e,r(t,null,s,n),!n.pop()}}),has:N(function(e){return function(t){return nt(e,t).length>0}}),contains:N(function(e){return function(t){return(t.textContent||t.innerText||s(t)).indexOf(e)>-1}}),enabled:function(e){return e.disabled===!1},disabled:function(e){return e.disabled===!0},checked:function(e){var t=e.nodeName.toLowerCase();return t==="input"&&!!e.checked||t==="option"&&!!e.selected},selected:function(e){return e.parentNode&&e.parentNode.selectedIndex,e.selected===!0},parent:function(e){return!i.pseudos.empty(e)},empty:function(e){var t;e=e.firstChild;while(e){if(e.nodeName>"@"||(t=e.nodeType)===3||t===4)return!1;e=e.nextSibling}return!0},header:function(e){return X.test(e.nodeName)},text:function(e){var t,n;return e.nodeName.toLowerCase()==="input"&&(t=e.type)==="text"&&((n=e.getAttribute("type"))==null||n.toLowerCase()===t)},radio:rt("radio"),checkbox:rt("checkbox"),file:rt("file"),password:rt("password"),image:rt("image"),submit:it("submit"),reset:it("reset"),button:function(e){var t=e.nodeName.toLowerCase();return t==="input"&&e.type==="button"||t==="button"},input:function(e){return V.test(e.nodeName)},focus:function(e){var t=e.ownerDocument;return e===t.activeElement&&(!t.hasFocus||t.hasFocus())&&!!(e.type||e.href||~e.tabIndex)},active:function(e){return e===e.ownerDocument.activeElement},first:st(function(){return[0]}),last:st(function(e,t){return[t-1]}),eq:st(function(e,t,n){return[n<0?n+t:n]}),even:st(function(e,t){for(var n=0;n<t;n+=2)e.push(n);return e}),odd:st(function(e,t){for(var n=1;n<t;n+=2)e.push(n);return e}),lt:st(function(e,t,n){for(var r=n<0?n+t:n;--r>=0;)e.push(r);return e}),gt:st(function(e,t,n){for(var r=n<0?n+t:n;++r<t;)e.push(r);return e})}},f=y.compareDocumentPosition?function(e,t){return e===t?(l=!0,0):(!e.compareDocumentPosition||!t.compareDocumentPosition?e.compareDocumentPosition:e.compareDocumentPosition(t)&4)?-1:1}:function(e,t){if(e===t)return l=!0,0;if(e.sourceIndex&&t.sourceIndex)return e.sourceIndex-t.sourceIndex;var n,r,i=[],s=[],o=e.parentNode,u=t.parentNode,a=o;if(o===u)return ot(e,t);if(!o)return-1;if(!u)return 1;while(a)i.unshift(a),a=a.parentNode;a=u;while(a)s.unshift(a),a=a.parentNode;n=i.length,r=s.length;for(var f=0;f<n&&f<r;f++)if(i[f]!==s[f])return ot(i[f],s[f]);return f===n?ot(e,s[f],-1):ot(i[f],t,1)},[0,0].sort(f),h=!l,nt.uniqueSort=function(e){var t,n=[],r=1,i=0;l=h,e.sort(f);if(l){for(;t=e[r];r++)t===e[r-1]&&(i=n.push(r));while(i--)e.splice(n[i],1)}return e},nt.error=function(e){throw new Error("Syntax error, unrecognized expression: "+e)},a=nt.compile=function(e,t){var n,r=[],i=[],s=A[d][e+" "];if(!s){t||(t=ut(e)),n=t.length;while(n--)s=ht(t[n]),s[d]?r.push(s):i.push(s);s=A(e,pt(i,r))}return s},g.querySelectorAll&&function(){var e,t=vt,n=/'|\\/g,r=/\=[\x20\t\r\n\f]*([^'"\]]*)[\x20\t\r\n\f]*\]/g,i=[":focus"],s=[":active"],u=y.matchesSelector||y.mozMatchesSelector||y.webkitMatchesSelector||y.oMatchesSelector||y.msMatchesSelector;K(function(e){e.innerHTML="<select><option selected=''></option></select>",e.querySelectorAll("[selected]").length||i.push("\\["+O+"*(?:checked|disabled|ismap|multiple|readonly|selected|value)"),e.querySelectorAll(":checked").length||i.push(":checked")}),K(function(e){e.innerHTML="<p test=''></p>",e.querySelectorAll("[test^='']").length&&i.push("[*^$]="+O+"*(?:\"\"|'')"),e.innerHTML="<input type='hidden'/>",e.querySelectorAll(":enabled").length||i.push(":enabled",":disabled")}),i=new RegExp(i.join("|")),vt=function(e,r,s,o,u){if(!o&&!u&&!i.test(e)){var a,f,l=!0,c=d,h=r,p=r.nodeType===9&&e;if(r.nodeType===1&&r.nodeName.toLowerCase()!=="object"){a=ut(e),(l=r.getAttribute("id"))?c=l.replace(n,"\\$&"):r.setAttribute("id",c),c="[id='"+c+"'] ",f=a.length;while(f--)a[f]=c+a[f].join("");h=z.test(e)&&r.parentNode||r,p=a.join(",")}if(p)try{return S.apply(s,x.call(h.querySelectorAll(p),0)),s}catch(v){}finally{l||r.removeAttribute("id")}}return t(e,r,s,o,u)},u&&(K(function(t){e=u.call(t,"div");try{u.call(t,"[test!='']:sizzle"),s.push("!=",H)}catch(n){}}),s=new RegExp(s.join("|")),nt.matchesSelector=function(t,n){n=n.replace(r,"='$1']");if(!o(t)&&!s.test(n)&&!i.test(n))try{var a=u.call(t,n);if(a||e||t.document&&t.document.nodeType!==11)return a}catch(f){}return nt(n,null,null,[t]).length>0})}(),i.pseudos.nth=i.pseudos.eq,i.filters=mt.prototype=i.pseudos,i.setFilters=new mt,nt.attr=v.attr,v.find=nt,v.expr=nt.selectors,v.expr[":"]=v.expr.pseudos,v.unique=nt.uniqueSort,v.text=nt.getText,v.isXMLDoc=nt.isXML,v.contains=nt.contains}(e);var nt=/Until$/,rt=/^(?:parents|prev(?:Until|All))/,it=/^.[^:#\[\.,]*$/,st=v.expr.match.needsContext,ot={children:!0,contents:!0,next:!0,prev:!0};v.fn.extend({find:function(e){var t,n,r,i,s,o,u=this;if(typeof e!="string")return v(e).filter(function(){for(t=0,n=u.length;t<n;t++)if(v.contains(u[t],this))return!0});o=this.pushStack("","find",e);for(t=0,n=this.length;t<n;t++){r=o.length,v.find(e,this[t],o);if(t>0)for(i=r;i<o.length;i++)for(s=0;s<r;s++)if(o[s]===o[i]){o.splice(i--,1);break}}return o},has:function(e){var t,n=v(e,this),r=n.length;return this.filter(function(){for(t=0;t<r;t++)if(v.contains(this,n[t]))return!0})},not:function(e){return this.pushStack(ft(this,e,!1),"not",e)},filter:function(e){return this.pushStack(ft(this,e,!0),"filter",e)},is:function(e){return!!e&&(typeof e=="string"?st.test(e)?v(e,this.context).index(this[0])>=0:v.filter(e,this).length>0:this.filter(e).length>0)},closest:function(e,t){var n,r=0,i=this.length,s=[],o=st.test(e)||typeof e!="string"?v(e,t||this.context):0;for(;r<i;r++){n=this[r];while(n&&n.ownerDocument&&n!==t&&n.nodeType!==11){if(o?o.index(n)>-1:v.find.matchesSelector(n,e)){s.push(n);break}n=n.parentNode}}return s=s.length>1?v.unique(s):s,this.pushStack(s,"closest",e)},index:function(e){return e?typeof e=="string"?v.inArray(this[0],v(e)):v.inArray(e.jquery?e[0]:e,this):this[0]&&this[0].parentNode?this.prevAll().length:-1},add:function(e,t){var n=typeof e=="string"?v(e,t):v.makeArray(e&&e.nodeType?[e]:e),r=v.merge(this.get(),n);return this.pushStack(ut(n[0])||ut(r[0])?r:v.unique(r))},addBack:function(e){return this.add(e==null?this.prevObject:this.prevObject.filter(e))}}),v.fn.andSelf=v.fn.addBack,v.each({parent:function(e){var t=e.parentNode;return t&&t.nodeType!==11?t:null},parents:function(e){return v.dir(e,"parentNode")},parentsUntil:function(e,t,n){return v.dir(e,"parentNode",n)},next:function(e){return at(e,"nextSibling")},prev:function(e){return at(e,"previousSibling")},nextAll:function(e){return v.dir(e,"nextSibling")},prevAll:function(e){return v.dir(e,"previousSibling")},nextUntil:function(e,t,n){return v.dir(e,"nextSibling",n)},prevUntil:function(e,t,n){return v.dir(e,"previousSibling",n)},siblings:function(e){return v.sibling((e.parentNode||{}).firstChild,e)},children:function(e){return v.sibling(e.firstChild)},contents:function(e){return v.nodeName(e,"iframe")?e.contentDocument||e.contentWindow.document:v.merge([],e.childNodes)}},function(e,t){v.fn[e]=function(n,r){var i=v.map(this,t,n);return nt.test(e)||(r=n),r&&typeof r=="string"&&(i=v.filter(r,i)),i=this.length>1&&!ot[e]?v.unique(i):i,this.length>1&&rt.test(e)&&(i=i.reverse()),this.pushStack(i,e,l.call(arguments).join(","))}}),v.extend({filter:function(e,t,n){return n&&(e=":not("+e+")"),t.length===1?v.find.matchesSelector(t[0],e)?[t[0]]:[]:v.find.matches(e,t)},dir:function(e,n,r){var i=[],s=e[n];while(s&&s.nodeType!==9&&(r===t||s.nodeType!==1||!v(s).is(r)))s.nodeType===1&&i.push(s),s=s[n];return i},sibling:function(e,t){var n=[];for(;e;e=e.nextSibling)e.nodeType===1&&e!==t&&n.push(e);return n}});var ct="abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",ht=/ jQuery\d+="(?:null|\d+)"/g,pt=/^\s+/,dt=/<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,vt=/<([\w:]+)/,mt=/<tbody/i,gt=/<|&#?\w+;/,yt=/<(?:script|style|link)/i,bt=/<(?:script|object|embed|option|style)/i,wt=new RegExp("<(?:"+ct+")[\\s/>]","i"),Et=/^(?:checkbox|radio)$/,St=/checked\s*(?:[^=]|=\s*.checked.)/i,xt=/\/(java|ecma)script/i,Tt=/^\s*<!(?:\[CDATA\[|\-\-)|[\]\-]{2}>\s*$/g,Nt={option:[1,"<select multiple='multiple'>","</select>"],legend:[1,"<fieldset>","</fieldset>"],thead:[1,"<table>","</table>"],tr:[2,"<table><tbody>","</tbody></table>"],td:[3,"<table><tbody><tr>","</tr></tbody></table>"],col:[2,"<table><tbody></tbody><colgroup>","</colgroup></table>"],area:[1,"<map>","</map>"],_default:[0,"",""]},Ct=lt(i),kt=Ct.appendChild(i.createElement("div"));Nt.optgroup=Nt.option,Nt.tbody=Nt.tfoot=Nt.colgroup=Nt.caption=Nt.thead,Nt.th=Nt.td,v.support.htmlSerialize||(Nt._default=[1,"X<div>","</div>"]),v.fn.extend({text:function(e){return v.access(this,function(e){return e===t?v.text(this):this.empty().append((this[0]&&this[0].ownerDocument||i).createTextNode(e))},null,e,arguments.length)},wrapAll:function(e){if(v.isFunction(e))return this.each(function(t){v(this).wrapAll(e.call(this,t))});if(this[0]){var t=v(e,this[0].ownerDocument).eq(0).clone(!0);this[0].parentNode&&t.insertBefore(this[0]),t.map(function(){var e=this;while(e.firstChild&&e.firstChild.nodeType===1)e=e.firstChild;return e}).append(this)}return this},wrapInner:function(e){return v.isFunction(e)?this.each(function(t){v(this).wrapInner(e.call(this,t))}):this.each(function(){var t=v(this),n=t.contents();n.length?n.wrapAll(e):t.append(e)})},wrap:function(e){var t=v.isFunction(e);return this.each(function(n){v(this).wrapAll(t?e.call(this,n):e)})},unwrap:function(){return this.parent().each(function(){v.nodeName(this,"body")||v(this).replaceWith(this.childNodes)}).end()},append:function(){return this.domManip(arguments,!0,function(e){(this.nodeType===1||this.nodeType===11)&&this.appendChild(e)})},prepend:function(){return this.domManip(arguments,!0,function(e){(this.nodeType===1||this.nodeType===11)&&this.insertBefore(e,this.firstChild)})},before:function(){if(!ut(this[0]))return this.domManip(arguments,!1,function(e){this.parentNode.insertBefore(e,this)});if(arguments.length){var e=v.clean(arguments);return this.pushStack(v.merge(e,this),"before",this.selector)}},after:function(){if(!ut(this[0]))return this.domManip(arguments,!1,function(e){this.parentNode.insertBefore(e,this.nextSibling)});if(arguments.length){var e=v.clean(arguments);return this.pushStack(v.merge(this,e),"after",this.selector)}},remove:function(e,t){var n,r=0;for(;(n=this[r])!=null;r++)if(!e||v.filter(e,[n]).length)!t&&n.nodeType===1&&(v.cleanData(n.getElementsByTagName("*")),v.cleanData([n])),n.parentNode&&n.parentNode.removeChild(n);return this},empty:function(){var e,t=0;for(;(e=this[t])!=null;t++){e.nodeType===1&&v.cleanData(e.getElementsByTagName("*"));while(e.firstChild)e.removeChild(e.firstChild)}return this},clone:function(e,t){return e=e==null?!1:e,t=t==null?e:t,this.map(function(){return v.clone(this,e,t)})},html:function(e){return v.access(this,function(e){var n=this[0]||{},r=0,i=this.length;if(e===t)return n.nodeType===1?n.innerHTML.replace(ht,""):t;if(typeof e=="string"&&!yt.test(e)&&(v.support.htmlSerialize||!wt.test(e))&&(v.support.leadingWhitespace||!pt.test(e))&&!Nt[(vt.exec(e)||["",""])[1].toLowerCase()]){e=e.replace(dt,"<$1></$2>");try{for(;r<i;r++)n=this[r]||{},n.nodeType===1&&(v.cleanData(n.getElementsByTagName("*")),n.innerHTML=e);n=0}catch(s){}}n&&this.empty().append(e)},null,e,arguments.length)},replaceWith:function(e){return ut(this[0])?this.length?this.pushStack(v(v.isFunction(e)?e():e),"replaceWith",e):this:v.isFunction(e)?this.each(function(t){var n=v(this),r=n.html();n.replaceWith(e.call(this,t,r))}):(typeof e!="string"&&(e=v(e).detach()),this.each(function(){var t=this.nextSibling,n=this.parentNode;v(this).remove(),t?v(t).before(e):v(n).append(e)}))},detach:function(e){return this.remove(e,!0)},domManip:function(e,n,r){e=[].concat.apply([],e);var i,s,o,u,a=0,f=e[0],l=[],c=this.length;if(!v.support.checkClone&&c>1&&typeof f=="string"&&St.test(f))return this.each(function(){v(this).domManip(e,n,r)});if(v.isFunction(f))return this.each(function(i){var s=v(this);e[0]=f.call(this,i,n?s.html():t),s.domManip(e,n,r)});if(this[0]){i=v.buildFragment(e,this,l),o=i.fragment,s=o.firstChild,o.childNodes.length===1&&(o=s);if(s){n=n&&v.nodeName(s,"tr");for(u=i.cacheable||c-1;a<c;a++)r.call(n&&v.nodeName(this[a],"table")?Lt(this[a],"tbody"):this[a],a===u?o:v.clone(o,!0,!0))}o=s=null,l.length&&v.each(l,function(e,t){t.src?v.ajax?v.ajax({url:t.src,type:"GET",dataType:"script",async:!1,global:!1,"throws":!0}):v.error("no ajax"):v.globalEval((t.text||t.textContent||t.innerHTML||"").replace(Tt,"")),t.parentNode&&t.parentNode.removeChild(t)})}return this}}),v.buildFragment=function(e,n,r){var s,o,u,a=e[0];return n=n||i,n=!n.nodeType&&n[0]||n,n=n.ownerDocument||n,e.length===1&&typeof a=="string"&&a.length<512&&n===i&&a.charAt(0)==="<"&&!bt.test(a)&&(v.support.checkClone||!St.test(a))&&(v.support.html5Clone||!wt.test(a))&&(o=!0,s=v.fragments[a],u=s!==t),s||(s=n.createDocumentFragment(),v.clean(e,n,s,r),o&&(v.fragments[a]=u&&s)),{fragment:s,cacheable:o}},v.fragments={},v.each({appendTo:"append",prependTo:"prepend",insertBefore:"before",insertAfter:"after",replaceAll:"replaceWith"},function(e,t){v.fn[e]=function(n){var r,i=0,s=[],o=v(n),u=o.length,a=this.length===1&&this[0].parentNode;if((a==null||a&&a.nodeType===11&&a.childNodes.length===1)&&u===1)return o[t](this[0]),this;for(;i<u;i++)r=(i>0?this.clone(!0):this).get(),v(o[i])[t](r),s=s.concat(r);return this.pushStack(s,e,o.selector)}}),v.extend({clone:function(e,t,n){var r,i,s,o;v.support.html5Clone||v.isXMLDoc(e)||!wt.test("<"+e.nodeName+">")?o=e.cloneNode(!0):(kt.innerHTML=e.outerHTML,kt.removeChild(o=kt.firstChild));if((!v.support.noCloneEvent||!v.support.noCloneChecked)&&(e.nodeType===1||e.nodeType===11)&&!v.isXMLDoc(e)){Ot(e,o),r=Mt(e),i=Mt(o);for(s=0;r[s];++s)i[s]&&Ot(r[s],i[s])}if(t){At(e,o);if(n){r=Mt(e),i=Mt(o);for(s=0;r[s];++s)At(r[s],i[s])}}return r=i=null,o},clean:function(e,t,n,r){var s,o,u,a,f,l,c,h,p,d,m,g,y=t===i&&Ct,b=[];if(!t||typeof t.createDocumentFragment=="undefined")t=i;for(s=0;(u=e[s])!=null;s++){typeof u=="number"&&(u+="");if(!u)continue;if(typeof u=="string")if(!gt.test(u))u=t.createTextNode(u);else{y=y||lt(t),c=t.createElement("div"),y.appendChild(c),u=u.replace(dt,"<$1></$2>"),a=(vt.exec(u)||["",""])[1].toLowerCase(),f=Nt[a]||Nt._default,l=f[0],c.innerHTML=f[1]+u+f[2];while(l--)c=c.lastChild;if(!v.support.tbody){h=mt.test(u),p=a==="table"&&!h?c.firstChild&&c.firstChild.childNodes:f[1]==="<table>"&&!h?c.childNodes:[];for(o=p.length-1;o>=0;--o)v.nodeName(p[o],"tbody")&&!p[o].childNodes.length&&p[o].parentNode.removeChild(p[o])}!v.support.leadingWhitespace&&pt.test(u)&&c.insertBefore(t.createTextNode(pt.exec(u)[0]),c.firstChild),u=c.childNodes,c.parentNode.removeChild(c)}u.nodeType?b.push(u):v.merge(b,u)}c&&(u=c=y=null);if(!v.support.appendChecked)for(s=0;(u=b[s])!=null;s++)v.nodeName(u,"input")?_t(u):typeof u.getElementsByTagName!="undefined"&&v.grep(u.getElementsByTagName("input"),_t);if(n){m=function(e){if(!e.type||xt.test(e.type))return r?r.push(e.parentNode?e.parentNode.removeChild(e):e):n.appendChild(e)};for(s=0;(u=b[s])!=null;s++)if(!v.nodeName(u,"script")||!m(u))n.appendChild(u),typeof u.getElementsByTagName!="undefined"&&(g=v.grep(v.merge([],u.getElementsByTagName("script")),m),b.splice.apply(b,[s+1,0].concat(g)),s+=g.length)}return b},cleanData:function(e,t){var n,r,i,s,o=0,u=v.expando,a=v.cache,f=v.support.deleteExpando,l=v.event.special;for(;(i=e[o])!=null;o++)if(t||v.acceptData(i)){r=i[u],n=r&&a[r];if(n){if(n.events)for(s in n.events)l[s]?v.event.remove(i,s):v.removeEvent(i,s,n.handle);a[r]&&(delete a[r],f?delete i[u]:i.removeAttribute?i.removeAttribute(u):i[u]=null,v.deletedIds.push(r))}}}}),function(){var e,t;v.uaMatch=function(e){e=e.toLowerCase();var t=/(chrome)[ \/]([\w.]+)/.exec(e)||/(webkit)[ \/]([\w.]+)/.exec(e)||/(opera)(?:.*version|)[ \/]([\w.]+)/.exec(e)||/(msie) ([\w.]+)/.exec(e)||e.indexOf("compatible")<0&&/(mozilla)(?:.*? rv:([\w.]+)|)/.exec(e)||[];return{browser:t[1]||"",version:t[2]||"0"}},e=v.uaMatch(o.userAgent),t={},e.browser&&(t[e.browser]=!0,t.version=e.version),t.chrome?t.webkit=!0:t.webkit&&(t.safari=!0),v.browser=t,v.sub=function(){function e(t,n){return new e.fn.init(t,n)}v.extend(!0,e,this),e.superclass=this,e.fn=e.prototype=this(),e.fn.constructor=e,e.sub=this.sub,e.fn.init=function(r,i){return i&&i instanceof v&&!(i instanceof e)&&(i=e(i)),v.fn.init.call(this,r,i,t)},e.fn.init.prototype=e.fn;var t=e(i);return e}}();var Dt,Pt,Ht,Bt=/alpha\([^)]*\)/i,jt=/opacity=([^)]*)/,Ft=/^(top|right|bottom|left)$/,It=/^(none|table(?!-c[ea]).+)/,qt=/^margin/,Rt=new RegExp("^("+m+")(.*)$","i"),Ut=new RegExp("^("+m+")(?!px)[a-z%]+$","i"),zt=new RegExp("^([-+])=("+m+")","i"),Wt={BODY:"block"},Xt={position:"absolute",visibility:"hidden",display:"block"},Vt={letterSpacing:0,fontWeight:400},$t=["Top","Right","Bottom","Left"],Jt=["Webkit","O","Moz","ms"],Kt=v.fn.toggle;v.fn.extend({css:function(e,n){return v.access(this,function(e,n,r){return r!==t?v.style(e,n,r):v.css(e,n)},e,n,arguments.length>1)},show:function(){return Yt(this,!0)},hide:function(){return Yt(this)},toggle:function(e,t){var n=typeof e=="boolean";return v.isFunction(e)&&v.isFunction(t)?Kt.apply(this,arguments):this.each(function(){(n?e:Gt(this))?v(this).show():v(this).hide()})}}),v.extend({cssHooks:{opacity:{get:function(e,t){if(t){var n=Dt(e,"opacity");return n===""?"1":n}}}},cssNumber:{fillOpacity:!0,fontWeight:!0,lineHeight:!0,opacity:!0,orphans:!0,widows:!0,zIndex:!0,zoom:!0},cssProps:{"float":v.support.cssFloat?"cssFloat":"styleFloat"},style:function(e,n,r,i){if(!e||e.nodeType===3||e.nodeType===8||!e.style)return;var s,o,u,a=v.camelCase(n),f=e.style;n=v.cssProps[a]||(v.cssProps[a]=Qt(f,a)),u=v.cssHooks[n]||v.cssHooks[a];if(r===t)return u&&"get"in u&&(s=u.get(e,!1,i))!==t?s:f[n];o=typeof r,o==="string"&&(s=zt.exec(r))&&(r=(s[1]+1)*s[2]+parseFloat(v.css(e,n)),o="number");if(r==null||o==="number"&&isNaN(r))return;o==="number"&&!v.cssNumber[a]&&(r+="px");if(!u||!("set"in u)||(r=u.set(e,r,i))!==t)try{f[n]=r}catch(l){}},css:function(e,n,r,i){var s,o,u,a=v.camelCase(n);return n=v.cssProps[a]||(v.cssProps[a]=Qt(e.style,a)),u=v.cssHooks[n]||v.cssHooks[a],u&&"get"in u&&(s=u.get(e,!0,i)),s===t&&(s=Dt(e,n)),s==="normal"&&n in Vt&&(s=Vt[n]),r||i!==t?(o=parseFloat(s),r||v.isNumeric(o)?o||0:s):s},swap:function(e,t,n){var r,i,s={};for(i in t)s[i]=e.style[i],e.style[i]=t[i];r=n.call(e);for(i in t)e.style[i]=s[i];return r}}),e.getComputedStyle?Dt=function(t,n){var r,i,s,o,u=e.getComputedStyle(t,null),a=t.style;return u&&(r=u.getPropertyValue(n)||u[n],r===""&&!v.contains(t.ownerDocument,t)&&(r=v.style(t,n)),Ut.test(r)&&qt.test(n)&&(i=a.width,s=a.minWidth,o=a.maxWidth,a.minWidth=a.maxWidth=a.width=r,r=u.width,a.width=i,a.minWidth=s,a.maxWidth=o)),r}:i.documentElement.currentStyle&&(Dt=function(e,t){var n,r,i=e.currentStyle&&e.currentStyle[t],s=e.style;return i==null&&s&&s[t]&&(i=s[t]),Ut.test(i)&&!Ft.test(t)&&(n=s.left,r=e.runtimeStyle&&e.runtimeStyle.left,r&&(e.runtimeStyle.left=e.currentStyle.left),s.left=t==="fontSize"?"1em":i,i=s.pixelLeft+"px",s.left=n,r&&(e.runtimeStyle.left=r)),i===""?"auto":i}),v.each(["height","width"],function(e,t){v.cssHooks[t]={get:function(e,n,r){if(n)return e.offsetWidth===0&&It.test(Dt(e,"display"))?v.swap(e,Xt,function(){return tn(e,t,r)}):tn(e,t,r)},set:function(e,n,r){return Zt(e,n,r?en(e,t,r,v.support.boxSizing&&v.css(e,"boxSizing")==="border-box"):0)}}}),v.support.opacity||(v.cssHooks.opacity={get:function(e,t){return jt.test((t&&e.currentStyle?e.currentStyle.filter:e.style.filter)||"")?.01*parseFloat(RegExp.$1)+"":t?"1":""},set:function(e,t){var n=e.style,r=e.currentStyle,i=v.isNumeric(t)?"alpha(opacity="+t*100+")":"",s=r&&r.filter||n.filter||"";n.zoom=1;if(t>=1&&v.trim(s.replace(Bt,""))===""&&n.removeAttribute){n.removeAttribute("filter");if(r&&!r.filter)return}n.filter=Bt.test(s)?s.replace(Bt,i):s+" "+i}}),v(function(){v.support.reliableMarginRight||(v.cssHooks.marginRight={get:function(e,t){return v.swap(e,{display:"inline-block"},function(){if(t)return Dt(e,"marginRight")})}}),!v.support.pixelPosition&&v.fn.position&&v.each(["top","left"],function(e,t){v.cssHooks[t]={get:function(e,n){if(n){var r=Dt(e,t);return Ut.test(r)?v(e).position()[t]+"px":r}}}})}),v.expr&&v.expr.filters&&(v.expr.filters.hidden=function(e){return e.offsetWidth===0&&e.offsetHeight===0||!v.support.reliableHiddenOffsets&&(e.style&&e.style.display||Dt(e,"display"))==="none"},v.expr.filters.visible=function(e){return!v.expr.filters.hidden(e)}),v.each({margin:"",padding:"",border:"Width"},function(e,t){v.cssHooks[e+t]={expand:function(n){var r,i=typeof n=="string"?n.split(" "):[n],s={};for(r=0;r<4;r++)s[e+$t[r]+t]=i[r]||i[r-2]||i[0];return s}},qt.test(e)||(v.cssHooks[e+t].set=Zt)});var rn=/%20/g,sn=/\[\]$/,on=/\r?\n/g,un=/^(?:color|date|datetime|datetime-local|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,an=/^(?:select|textarea)/i;v.fn.extend({serialize:function(){return v.param(this.serializeArray())},serializeArray:function(){return this.map(function(){return this.elements?v.makeArray(this.elements):this}).filter(function(){return this.name&&!this.disabled&&(this.checked||an.test(this.nodeName)||un.test(this.type))}).map(function(e,t){var n=v(this).val();return n==null?null:v.isArray(n)?v.map(n,function(e,n){return{name:t.name,value:e.replace(on,"\r\n")}}):{name:t.name,value:n.replace(on,"\r\n")}}).get()}}),v.param=function(e,n){var r,i=[],s=function(e,t){t=v.isFunction(t)?t():t==null?"":t,i[i.length]=encodeURIComponent(e)+"="+encodeURIComponent(t)};n===t&&(n=v.ajaxSettings&&v.ajaxSettings.traditional);if(v.isArray(e)||e.jquery&&!v.isPlainObject(e))v.each(e,function(){s(this.name,this.value)});else for(r in e)fn(r,e[r],n,s);return i.join("&").replace(rn,"+")};var ln,cn,hn=/#.*$/,pn=/^(.*?):[ \t]*([^\r\n]*)\r?$/mg,dn=/^(?:about|app|app\-storage|.+\-extension|file|res|widget):$/,vn=/^(?:GET|HEAD)$/,mn=/^\/\//,gn=/\?/,yn=/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,bn=/([?&])_=[^&]*/,wn=/^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+)|)|)/,En=v.fn.load,Sn={},xn={},Tn=["*/"]+["*"];try{cn=s.href}catch(Nn){cn=i.createElement("a"),cn.href="",cn=cn.href}ln=wn.exec(cn.toLowerCase())||[],v.fn.load=function(e,n,r){if(typeof e!="string"&&En)return En.apply(this,arguments);if(!this.length)return this;var i,s,o,u=this,a=e.indexOf(" ");return a>=0&&(i=e.slice(a,e.length),e=e.slice(0,a)),v.isFunction(n)?(r=n,n=t):n&&typeof n=="object"&&(s="POST"),v.ajax({url:e,type:s,dataType:"html",data:n,complete:function(e,t){r&&u.each(r,o||[e.responseText,t,e])}}).done(function(e){o=arguments,u.html(i?v("<div>").append(e.replace(yn,"")).find(i):e)}),this},v.each("ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "),function(e,t){v.fn[t]=function(e){return this.on(t,e)}}),v.each(["get","post"],function(e,n){v[n]=function(e,r,i,s){return v.isFunction(r)&&(s=s||i,i=r,r=t),v.ajax({type:n,url:e,data:r,success:i,dataType:s})}}),v.extend({getScript:function(e,n){return v.get(e,t,n,"script")},getJSON:function(e,t,n){return v.get(e,t,n,"json")},ajaxSetup:function(e,t){return t?Ln(e,v.ajaxSettings):(t=e,e=v.ajaxSettings),Ln(e,t),e},ajaxSettings:{url:cn,isLocal:dn.test(ln[1]),global:!0,type:"GET",contentType:"application/x-www-form-urlencoded; charset=UTF-8",processData:!0,async:!0,accepts:{xml:"application/xml, text/xml",html:"text/html",text:"text/plain",json:"application/json, text/javascript","*":Tn},contents:{xml:/xml/,html:/html/,json:/json/},responseFields:{xml:"responseXML",text:"responseText"},converters:{"* text":e.String,"text html":!0,"text json":v.parseJSON,"text xml":v.parseXML},flatOptions:{context:!0,url:!0}},ajaxPrefilter:Cn(Sn),ajaxTransport:Cn(xn),ajax:function(e,n){function T(e,n,s,a){var l,y,b,w,S,T=n;if(E===2)return;E=2,u&&clearTimeout(u),o=t,i=a||"",x.readyState=e>0?4:0,s&&(w=An(c,x,s));if(e>=200&&e<300||e===304)c.ifModified&&(S=x.getResponseHeader("Last-Modified"),S&&(v.lastModified[r]=S),S=x.getResponseHeader("Etag"),S&&(v.etag[r]=S)),e===304?(T="notmodified",l=!0):(l=On(c,w),T=l.state,y=l.data,b=l.error,l=!b);else{b=T;if(!T||e)T="error",e<0&&(e=0)}x.status=e,x.statusText=(n||T)+"",l?d.resolveWith(h,[y,T,x]):d.rejectWith(h,[x,T,b]),x.statusCode(g),g=t,f&&p.trigger("ajax"+(l?"Success":"Error"),[x,c,l?y:b]),m.fireWith(h,[x,T]),f&&(p.trigger("ajaxComplete",[x,c]),--v.active||v.event.trigger("ajaxStop"))}typeof e=="object"&&(n=e,e=t),n=n||{};var r,i,s,o,u,a,f,l,c=v.ajaxSetup({},n),h=c.context||c,p=h!==c&&(h.nodeType||h instanceof v)?v(h):v.event,d=v.Deferred(),m=v.Callbacks("once memory"),g=c.statusCode||{},b={},w={},E=0,S="canceled",x={readyState:0,setRequestHeader:function(e,t){if(!E){var n=e.toLowerCase();e=w[n]=w[n]||e,b[e]=t}return this},getAllResponseHeaders:function(){return E===2?i:null},getResponseHeader:function(e){var n;if(E===2){if(!s){s={};while(n=pn.exec(i))s[n[1].toLowerCase()]=n[2]}n=s[e.toLowerCase()]}return n===t?null:n},overrideMimeType:function(e){return E||(c.mimeType=e),this},abort:function(e){return e=e||S,o&&o.abort(e),T(0,e),this}};d.promise(x),x.success=x.done,x.error=x.fail,x.complete=m.add,x.statusCode=function(e){if(e){var t;if(E<2)for(t in e)g[t]=[g[t],e[t]];else t=e[x.status],x.always(t)}return this},c.url=((e||c.url)+"").replace(hn,"").replace(mn,ln[1]+"//"),c.dataTypes=v.trim(c.dataType||"*").toLowerCase().split(y),c.crossDomain==null&&(a=wn.exec(c.url.toLowerCase()),c.crossDomain=!(!a||a[1]===ln[1]&&a[2]===ln[2]&&(a[3]||(a[1]==="http:"?80:443))==(ln[3]||(ln[1]==="http:"?80:443)))),c.data&&c.processData&&typeof c.data!="string"&&(c.data=v.param(c.data,c.traditional)),kn(Sn,c,n,x);if(E===2)return x;f=c.global,c.type=c.type.toUpperCase(),c.hasContent=!vn.test(c.type),f&&v.active++===0&&v.event.trigger("ajaxStart");if(!c.hasContent){c.data&&(c.url+=(gn.test(c.url)?"&":"?")+c.data,delete c.data),r=c.url;if(c.cache===!1){var N=v.now(),C=c.url.replace(bn,"$1_="+N);c.url=C+(C===c.url?(gn.test(c.url)?"&":"?")+"_="+N:"")}}(c.data&&c.hasContent&&c.contentType!==!1||n.contentType)&&x.setRequestHeader("Content-Type",c.contentType),c.ifModified&&(r=r||c.url,v.lastModified[r]&&x.setRequestHeader("If-Modified-Since",v.lastModified[r]),v.etag[r]&&x.setRequestHeader("If-None-Match",v.etag[r])),x.setRequestHeader("Accept",c.dataTypes[0]&&c.accepts[c.dataTypes[0]]?c.accepts[c.dataTypes[0]]+(c.dataTypes[0]!=="*"?", "+Tn+"; q=0.01":""):c.accepts["*"]);for(l in c.headers)x.setRequestHeader(l,c.headers[l]);if(!c.beforeSend||c.beforeSend.call(h,x,c)!==!1&&E!==2){S="abort";for(l in{success:1,error:1,complete:1})x[l](c[l]);o=kn(xn,c,n,x);if(!o)T(-1,"No Transport");else{x.readyState=1,f&&p.trigger("ajaxSend",[x,c]),c.async&&c.timeout>0&&(u=setTimeout(function(){x.abort("timeout")},c.timeout));try{E=1,o.send(b,T)}catch(k){if(!(E<2))throw k;T(-1,k)}}return x}return x.abort()},active:0,lastModified:{},etag:{}});var Mn=[],_n=/\?/,Dn=/(=)\?(?=&|$)|\?\?/,Pn=v.now();v.ajaxSetup({jsonp:"callback",jsonpCallback:function(){var e=Mn.pop()||v.expando+"_"+Pn++;return this[e]=!0,e}}),v.ajaxPrefilter("json jsonp",function(n,r,i){var s,o,u,a=n.data,f=n.url,l=n.jsonp!==!1,c=l&&Dn.test(f),h=l&&!c&&typeof a=="string"&&!(n.contentType||"").indexOf("application/x-www-form-urlencoded")&&Dn.test(a);if(n.dataTypes[0]==="jsonp"||c||h)return s=n.jsonpCallback=v.isFunction(n.jsonpCallback)?n.jsonpCallback():n.jsonpCallback,o=e[s],c?n.url=f.replace(Dn,"$1"+s):h?n.data=a.replace(Dn,"$1"+s):l&&(n.url+=(_n.test(f)?"&":"?")+n.jsonp+"="+s),n.converters["script json"]=function(){return u||v.error(s+" was not called"),u[0]},n.dataTypes[0]="json",e[s]=function(){u=arguments},i.always(function(){e[s]=o,n[s]&&(n.jsonpCallback=r.jsonpCallback,Mn.push(s)),u&&v.isFunction(o)&&o(u[0]),u=o=t}),"script"}),v.ajaxSetup({accepts:{script:"text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"},contents:{script:/javascript|ecmascript/},converters:{"text script":function(e){return v.globalEval(e),e}}}),v.ajaxPrefilter("script",function(e){e.cache===t&&(e.cache=!1),e.crossDomain&&(e.type="GET",e.global=!1)}),v.ajaxTransport("script",function(e){if(e.crossDomain){var n,r=i.head||i.getElementsByTagName("head")[0]||i.documentElement;return{send:function(s,o){n=i.createElement("script"),n.async="async",e.scriptCharset&&(n.charset=e.scriptCharset),n.src=e.url,n.onload=n.onreadystatechange=function(e,i){if(i||!n.readyState||/loaded|complete/.test(n.readyState))n.onload=n.onreadystatechange=null,r&&n.parentNode&&r.removeChild(n),n=t,i||o(200,"success")},r.insertBefore(n,r.firstChild)},abort:function(){n&&n.onload(0,1)}}}});var Hn,Bn=e.ActiveXObject?function(){for(var e in Hn)Hn[e](0,1)}:!1,jn=0;v.ajaxSettings.xhr=e.ActiveXObject?function(){return!this.isLocal&&Fn()||In()}:Fn,function(e){v.extend(v.support,{ajax:!!e,cors:!!e&&"withCredentials"in e})}(v.ajaxSettings.xhr()),v.support.ajax&&v.ajaxTransport(function(n){if(!n.crossDomain||v.support.cors){var r;return{send:function(i,s){var o,u,a=n.xhr();n.username?a.open(n.type,n.url,n.async,n.username,n.password):a.open(n.type,n.url,n.async);if(n.xhrFields)for(u in n.xhrFields)a[u]=n.xhrFields[u];n.mimeType&&a.overrideMimeType&&a.overrideMimeType(n.mimeType),!n.crossDomain&&!i["X-Requested-With"]&&(i["X-Requested-With"]="XMLHttpRequest");try{for(u in i)a.setRequestHeader(u,i[u])}catch(f){}a.send(n.hasContent&&n.data||null),r=function(e,i){var u,f,l,c,h;try{if(r&&(i||a.readyState===4)){r=t,o&&(a.onreadystatechange=v.noop,Bn&&delete Hn[o]);if(i)a.readyState!==4&&a.abort();else{u=a.status,l=a.getAllResponseHeaders(),c={},h=a.responseXML,h&&h.documentElement&&(c.xml=h);try{c.text=a.responseText}catch(p){}try{f=a.statusText}catch(p){f=""}!u&&n.isLocal&&!n.crossDomain?u=c.text?200:404:u===1223&&(u=204)}}}catch(d){i||s(-1,d)}c&&s(u,f,c,l)},n.async?a.readyState===4?setTimeout(r,0):(o=++jn,Bn&&(Hn||(Hn={},v(e).unload(Bn)),Hn[o]=r),a.onreadystatechange=r):r()},abort:function(){r&&r(0,1)}}}});var qn,Rn,Un=/^(?:toggle|show|hide)$/,zn=new RegExp("^(?:([-+])=|)("+m+")([a-z%]*)$","i"),Wn=/queueHooks$/,Xn=[Gn],Vn={"*":[function(e,t){var n,r,i=this.createTween(e,t),s=zn.exec(t),o=i.cur(),u=+o||0,a=1,f=20;if(s){n=+s[2],r=s[3]||(v.cssNumber[e]?"":"px");if(r!=="px"&&u){u=v.css(i.elem,e,!0)||n||1;do a=a||".5",u/=a,v.style(i.elem,e,u+r);while(a!==(a=i.cur()/o)&&a!==1&&--f)}i.unit=r,i.start=u,i.end=s[1]?u+(s[1]+1)*n:n}return i}]};v.Animation=v.extend(Kn,{tweener:function(e,t){v.isFunction(e)?(t=e,e=["*"]):e=e.split(" ");var n,r=0,i=e.length;for(;r<i;r++)n=e[r],Vn[n]=Vn[n]||[],Vn[n].unshift(t)},prefilter:function(e,t){t?Xn.unshift(e):Xn.push(e)}}),v.Tween=Yn,Yn.prototype={constructor:Yn,init:function(e,t,n,r,i,s){this.elem=e,this.prop=n,this.easing=i||"swing",this.options=t,this.start=this.now=this.cur(),this.end=r,this.unit=s||(v.cssNumber[n]?"":"px")},cur:function(){var e=Yn.propHooks[this.prop];return e&&e.get?e.get(this):Yn.propHooks._default.get(this)},run:function(e){var t,n=Yn.propHooks[this.prop];return this.options.duration?this.pos=t=v.easing[this.easing](e,this.options.duration*e,0,1,this.options.duration):this.pos=t=e,this.now=(this.end-this.start)*t+this.start,this.options.step&&this.options.step.call(this.elem,this.now,this),n&&n.set?n.set(this):Yn.propHooks._default.set(this),this}},Yn.prototype.init.prototype=Yn.prototype,Yn.propHooks={_default:{get:function(e){var t;return e.elem[e.prop]==null||!!e.elem.style&&e.elem.style[e.prop]!=null?(t=v.css(e.elem,e.prop,!1,""),!t||t==="auto"?0:t):e.elem[e.prop]},set:function(e){v.fx.step[e.prop]?v.fx.step[e.prop](e):e.elem.style&&(e.elem.style[v.cssProps[e.prop]]!=null||v.cssHooks[e.prop])?v.style(e.elem,e.prop,e.now+e.unit):e.elem[e.prop]=e.now}}},Yn.propHooks.scrollTop=Yn.propHooks.scrollLeft={set:function(e){e.elem.nodeType&&e.elem.parentNode&&(e.elem[e.prop]=e.now)}},v.each(["toggle","show","hide"],function(e,t){var n=v.fn[t];v.fn[t]=function(r,i,s){return r==null||typeof r=="boolean"||!e&&v.isFunction(r)&&v.isFunction(i)?n.apply(this,arguments):this.animate(Zn(t,!0),r,i,s)}}),v.fn.extend({fadeTo:function(e,t,n,r){return this.filter(Gt).css("opacity",0).show().end().animate({opacity:t},e,n,r)},animate:function(e,t,n,r){var i=v.isEmptyObject(e),s=v.speed(t,n,r),o=function(){var t=Kn(this,v.extend({},e),s);i&&t.stop(!0)};return i||s.queue===!1?this.each(o):this.queue(s.queue,o)},stop:function(e,n,r){var i=function(e){var t=e.stop;delete e.stop,t(r)};return typeof e!="string"&&(r=n,n=e,e=t),n&&e!==!1&&this.queue(e||"fx",[]),this.each(function(){var t=!0,n=e!=null&&e+"queueHooks",s=v.timers,o=v._data(this);if(n)o[n]&&o[n].stop&&i(o[n]);else for(n in o)o[n]&&o[n].stop&&Wn.test(n)&&i(o[n]);for(n=s.length;n--;)s[n].elem===this&&(e==null||s[n].queue===e)&&(s[n].anim.stop(r),t=!1,s.splice(n,1));(t||!r)&&v.dequeue(this,e)})}}),v.each({slideDown:Zn("show"),slideUp:Zn("hide"),slideToggle:Zn("toggle"),fadeIn:{opacity:"show"},fadeOut:{opacity:"hide"},fadeToggle:{opacity:"toggle"}},function(e,t){v.fn[e]=function(e,n,r){return this.animate(t,e,n,r)}}),v.speed=function(e,t,n){var r=e&&typeof e=="object"?v.extend({},e):{complete:n||!n&&t||v.isFunction(e)&&e,duration:e,easing:n&&t||t&&!v.isFunction(t)&&t};r.duration=v.fx.off?0:typeof r.duration=="number"?r.duration:r.duration in v.fx.speeds?v.fx.speeds[r.duration]:v.fx.speeds._default;if(r.queue==null||r.queue===!0)r.queue="fx";return r.old=r.complete,r.complete=function(){v.isFunction(r.old)&&r.old.call(this),r.queue&&v.dequeue(this,r.queue)},r},v.easing={linear:function(e){return e},swing:function(e){return.5-Math.cos(e*Math.PI)/2}},v.timers=[],v.fx=Yn.prototype.init,v.fx.tick=function(){var e,n=v.timers,r=0;qn=v.now();for(;r<n.length;r++)e=n[r],!e()&&n[r]===e&&n.splice(r--,1);n.length||v.fx.stop(),qn=t},v.fx.timer=function(e){e()&&v.timers.push(e)&&!Rn&&(Rn=setInterval(v.fx.tick,v.fx.interval))},v.fx.interval=13,v.fx.stop=function(){clearInterval(Rn),Rn=null},v.fx.speeds={slow:600,fast:200,_default:400},v.fx.step={},v.expr&&v.expr.filters&&(v.expr.filters.animated=function(e){return v.grep(v.timers,function(t){return e===t.elem}).length});var er=/^(?:body|html)$/i;v.fn.offset=function(e){if(arguments.length)return e===t?this:this.each(function(t){v.offset.setOffset(this,e,t)});var n,r,i,s,o,u,a,f={top:0,left:0},l=this[0],c=l&&l.ownerDocument;if(!c)return;return(r=c.body)===l?v.offset.bodyOffset(l):(n=c.documentElement,v.contains(n,l)?(typeof l.getBoundingClientRect!="undefined"&&(f=l.getBoundingClientRect()),i=tr(c),s=n.clientTop||r.clientTop||0,o=n.clientLeft||r.clientLeft||0,u=i.pageYOffset||n.scrollTop,a=i.pageXOffset||n.scrollLeft,{top:f.top+u-s,left:f.left+a-o}):f)},v.offset={bodyOffset:function(e){var t=e.offsetTop,n=e.offsetLeft;return v.support.doesNotIncludeMarginInBodyOffset&&(t+=parseFloat(v.css(e,"marginTop"))||0,n+=parseFloat(v.css(e,"marginLeft"))||0),{top:t,left:n}},setOffset:function(e,t,n){var r=v.css(e,"position");r==="static"&&(e.style.position="relative");var i=v(e),s=i.offset(),o=v.css(e,"top"),u=v.css(e,"left"),a=(r==="absolute"||r==="fixed")&&v.inArray("auto",[o,u])>-1,f={},l={},c,h;a?(l=i.position(),c=l.top,h=l.left):(c=parseFloat(o)||0,h=parseFloat(u)||0),v.isFunction(t)&&(t=t.call(e,n,s)),t.top!=null&&(f.top=t.top-s.top+c),t.left!=null&&(f.left=t.left-s.left+h),"using"in t?t.using.call(e,f):i.css(f)}},v.fn.extend({position:function(){if(!this[0])return;var e=this[0],t=this.offsetParent(),n=this.offset(),r=er.test(t[0].nodeName)?{top:0,left:0}:t.offset();return n.top-=parseFloat(v.css(e,"marginTop"))||0,n.left-=parseFloat(v.css(e,"marginLeft"))||0,r.top+=parseFloat(v.css(t[0],"borderTopWidth"))||0,r.left+=parseFloat(v.css(t[0],"borderLeftWidth"))||0,{top:n.top-r.top,left:n.left-r.left}},offsetParent:function(){return this.map(function(){var e=this.offsetParent||i.body;while(e&&!er.test(e.nodeName)&&v.css(e,"position")==="static")e=e.offsetParent;return e||i.body})}}),v.each({scrollLeft:"pageXOffset",scrollTop:"pageYOffset"},function(e,n){var r=/Y/.test(n);v.fn[e]=function(i){return v.access(this,function(e,i,s){var o=tr(e);if(s===t)return o?n in o?o[n]:o.document.documentElement[i]:e[i];o?o.scrollTo(r?v(o).scrollLeft():s,r?s:v(o).scrollTop()):e[i]=s},e,i,arguments.length,null)}}),v.each({Height:"height",Width:"width"},function(e,n){v.each({padding:"inner"+e,content:n,"":"outer"+e},function(r,i){v.fn[i]=function(i,s){var o=arguments.length&&(r||typeof i!="boolean"),u=r||(i===!0||s===!0?"margin":"border");return v.access(this,function(n,r,i){var s;return v.isWindow(n)?n.document.documentElement["client"+e]:n.nodeType===9?(s=n.documentElement,Math.max(n.body["scroll"+e],s["scroll"+e],n.body["offset"+e],s["offset"+e],s["client"+e])):i===t?v.css(n,r,i,u):v.style(n,r,i,u)},n,o?i:t,o,null)}})}),e.jQuery=e.$=v,typeof define=="function"&&define.amd&&define.amd.jQuery&&define("jquery",[],function(){return v})})(window);
+jQuery.noConflict(true);
+})();
diff --git a/v3/js/togetherjs/togetherjs/libs/require-nomin.js b/v3/js/togetherjs/togetherjs/libs/require-nomin.js
new file mode 100644
index 000000000..52c2b076b
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/require-nomin.js
@@ -0,0 +1,2053 @@
+/** vim: et:ts=4:sw=4:sts=4
+ * @license RequireJS 2.1.8 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/requirejs for details
+ */
+//Not using strict: uneven strict support in browsers, #392, and causes
+//problems with requirejs.exec()/transpiler plugins that may not be strict.
+/*jslint regexp: true, nomen: true, sloppy: true */
+/*global window, navigator, document, importScripts, setTimeout, opera */
+
+var requirejs, require, define;
+(function (global) {
+    var req, s, head, baseElement, dataMain, src,
+        interactiveScript, currentlyAddingScript, mainScript, subPath,
+        version = '2.1.8',
+        commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,
+        cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,
+        jsSuffixRegExp = /\.js$/,
+        currDirRegExp = /^\.\//,
+        op = Object.prototype,
+        ostring = op.toString,
+        hasOwn = op.hasOwnProperty,
+        ap = Array.prototype,
+        apsp = ap.splice,
+        isBrowser = !!(typeof window !== 'undefined' && navigator && window.document),
+        isWebWorker = !isBrowser && typeof importScripts !== 'undefined',
+        //PS3 indicates loaded and complete, but need to wait for complete
+        //specifically. Sequence is 'loading', 'loaded', execution,
+        // then 'complete'. The UA check is unfortunate, but not sure how
+        //to feature test w/o causing perf issues.
+        readyRegExp = isBrowser && navigator.platform === 'PLAYSTATION 3' ?
+                      /^complete$/ : /^(complete|loaded)$/,
+        defContextName = '_',
+        //Oh the tragedy, detecting opera. See the usage of isOpera for reason.
+        isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]',
+        contexts = {},
+        cfg = {},
+        globalDefQueue = [],
+        useInteractive = false;
+
+    function isFunction(it) {
+        return ostring.call(it) === '[object Function]';
+    }
+
+    function isArray(it) {
+        return ostring.call(it) === '[object Array]';
+    }
+
+    /**
+     * Helper function for iterating over an array. If the func returns
+     * a true value, it will break out of the loop.
+     */
+    function each(ary, func) {
+        if (ary) {
+            var i;
+            for (i = 0; i < ary.length; i += 1) {
+                if (ary[i] && func(ary[i], i, ary)) {
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * Helper function for iterating over an array backwards. If the func
+     * returns a true value, it will break out of the loop.
+     */
+    function eachReverse(ary, func) {
+        if (ary) {
+            var i;
+            for (i = ary.length - 1; i > -1; i -= 1) {
+                if (ary[i] && func(ary[i], i, ary)) {
+                    break;
+                }
+            }
+        }
+    }
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    function getOwn(obj, prop) {
+        return hasProp(obj, prop) && obj[prop];
+    }
+
+    /**
+     * Cycles over properties in an object and calls a function for each
+     * property value. If the function returns a truthy value, then the
+     * iteration is stopped.
+     */
+    function eachProp(obj, func) {
+        var prop;
+        for (prop in obj) {
+            if (hasProp(obj, prop)) {
+                if (func(obj[prop], prop)) {
+                    break;
+                }
+            }
+        }
+    }
+
+    /**
+     * Simple function to mix in properties from source into target,
+     * but only if target does not already have a property of the same name.
+     */
+    function mixin(target, source, force, deepStringMixin) {
+        if (source) {
+            eachProp(source, function (value, prop) {
+                if (force || !hasProp(target, prop)) {
+                    if (deepStringMixin && typeof value !== 'string') {
+                        if (!target[prop]) {
+                            target[prop] = {};
+                        }
+                        mixin(target[prop], value, force, deepStringMixin);
+                    } else {
+                        target[prop] = value;
+                    }
+                }
+            });
+        }
+        return target;
+    }
+
+    //Similar to Function.prototype.bind, but the 'this' object is specified
+    //first, since it is easier to read/figure out what 'this' will be.
+    function bind(obj, fn) {
+        return function () {
+            return fn.apply(obj, arguments);
+        };
+    }
+
+    function scripts() {
+        return document.getElementsByTagName('script');
+    }
+
+    function defaultOnError(err) {
+        throw err;
+    }
+
+    //Allow getting a global that expressed in
+    //dot notation, like 'a.b.c'.
+    function getGlobal(value) {
+        if (!value) {
+            return value;
+        }
+        var g = global;
+        each(value.split('.'), function (part) {
+            g = g[part];
+        });
+        return g;
+    }
+
+    /**
+     * Constructs an error with a pointer to an URL with more information.
+     * @param {String} id the error ID that maps to an ID on a web page.
+     * @param {String} message human readable error.
+     * @param {Error} [err] the original error, if there is one.
+     *
+     * @returns {Error}
+     */
+    function makeError(id, msg, err, requireModules) {
+        var e = new Error(msg + '\nhttp://requirejs.org/docs/errors.html#' + id);
+        e.requireType = id;
+        e.requireModules = requireModules;
+        if (err) {
+            e.originalError = err;
+        }
+        return e;
+    }
+
+    if (typeof define !== 'undefined') {
+        //If a define is already in play via another AMD loader,
+        //do not overwrite.
+        return;
+    }
+
+    if (typeof requirejs !== 'undefined') {
+        if (isFunction(requirejs)) {
+            //Do not overwrite and existing requirejs instance.
+            return;
+        }
+        cfg = requirejs;
+        requirejs = undefined;
+    }
+
+    //Allow for a require config object
+    if (typeof require !== 'undefined' && !isFunction(require)) {
+        //assume it is a config object.
+        cfg = require;
+        require = undefined;
+    }
+
+    function newContext(contextName) {
+        var inCheckLoaded, Module, context, handlers,
+            checkLoadedTimeoutId,
+            config = {
+                //Defaults. Do not set a default for map
+                //config to speed up normalize(), which
+                //will run faster if there is no default.
+                waitSeconds: 7,
+                baseUrl: './',
+                paths: {},
+                pkgs: {},
+                shim: {},
+                config: {}
+            },
+            registry = {},
+            //registry of just enabled modules, to speed
+            //cycle breaking code when lots of modules
+            //are registered, but not activated.
+            enabledRegistry = {},
+            undefEvents = {},
+            defQueue = [],
+            defined = {},
+            urlFetched = {},
+            requireCounter = 1,
+            unnormalizedCounter = 1;
+
+        /**
+         * Trims the . and .. from an array of path segments.
+         * It will keep a leading path segment if a .. will become
+         * the first path segment, to help with module name lookups,
+         * which act like paths, but can be remapped. But the end result,
+         * all paths that use this function should look normalized.
+         * NOTE: this method MODIFIES the input array.
+         * @param {Array} ary the array of path segments.
+         */
+        function trimDots(ary) {
+            var i, part;
+            for (i = 0; ary[i]; i += 1) {
+                part = ary[i];
+                if (part === '.') {
+                    ary.splice(i, 1);
+                    i -= 1;
+                } else if (part === '..') {
+                    if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
+                        //End of the line. Keep at least one non-dot
+                        //path segment at the front so it can be mapped
+                        //correctly to disk. Otherwise, there is likely
+                        //no path mapping for a path starting with '..'.
+                        //This can still fail, but catches the most reasonable
+                        //uses of ..
+                        break;
+                    } else if (i > 0) {
+                        ary.splice(i - 1, 2);
+                        i -= 2;
+                    }
+                }
+            }
+        }
+
+        /**
+         * Given a relative module name, like ./something, normalize it to
+         * a real name that can be mapped to a path.
+         * @param {String} name the relative name
+         * @param {String} baseName a real name that the name arg is relative
+         * to.
+         * @param {Boolean} applyMap apply the map config to the value. Should
+         * only be done if this normalization is for a dependency ID.
+         * @returns {String} normalized name
+         */
+        function normalize(name, baseName, applyMap) {
+            var pkgName, pkgConfig, mapValue, nameParts, i, j, nameSegment,
+                foundMap, foundI, foundStarMap, starI,
+                baseParts = baseName && baseName.split('/'),
+                normalizedBaseParts = baseParts,
+                map = config.map,
+                starMap = map && map['*'];
+
+            //Adjust any relative paths.
+            if (name && name.charAt(0) === '.') {
+                //If have a base name, try to normalize against it,
+                //otherwise, assume it is a top-level require that will
+                //be relative to baseUrl in the end.
+                if (baseName) {
+                    if (getOwn(config.pkgs, baseName)) {
+                        //If the baseName is a package name, then just treat it as one
+                        //name to concat the name with.
+                        normalizedBaseParts = baseParts = [baseName];
+                    } else {
+                        //Convert baseName to array, and lop off the last part,
+                        //so that . matches that 'directory' and not name of the baseName's
+                        //module. For instance, baseName of 'one/two/three', maps to
+                        //'one/two/three.js', but we want the directory, 'one/two' for
+                        //this normalization.
+                        normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
+                    }
+
+                    name = normalizedBaseParts.concat(name.split('/'));
+                    trimDots(name);
+
+                    //Some use of packages may use a . path to reference the
+                    //'main' module name, so normalize for that.
+                    pkgConfig = getOwn(config.pkgs, (pkgName = name[0]));
+                    name = name.join('/');
+                    if (pkgConfig && name === pkgName + '/' + pkgConfig.main) {
+                        name = pkgName;
+                    }
+                } else if (name.indexOf('./') === 0) {
+                    // No baseName, so this is ID is resolved relative
+                    // to baseUrl, pull off the leading dot.
+                    name = name.substring(2);
+                }
+            }
+
+            //Apply map config if available.
+            if (applyMap && map && (baseParts || starMap)) {
+                nameParts = name.split('/');
+
+                for (i = nameParts.length; i > 0; i -= 1) {
+                    nameSegment = nameParts.slice(0, i).join('/');
+
+                    if (baseParts) {
+                        //Find the longest baseName segment match in the config.
+                        //So, do joins on the biggest to smallest lengths of baseParts.
+                        for (j = baseParts.length; j > 0; j -= 1) {
+                            mapValue = getOwn(map, baseParts.slice(0, j).join('/'));
+
+                            //baseName segment has config, find if it has one for
+                            //this name.
+                            if (mapValue) {
+                                mapValue = getOwn(mapValue, nameSegment);
+                                if (mapValue) {
+                                    //Match, update name to the new value.
+                                    foundMap = mapValue;
+                                    foundI = i;
+                                    break;
+                                }
+                            }
+                        }
+                    }
+
+                    if (foundMap) {
+                        break;
+                    }
+
+                    //Check for a star map match, but just hold on to it,
+                    //if there is a shorter segment match later in a matching
+                    //config, then favor over this star map.
+                    if (!foundStarMap && starMap && getOwn(starMap, nameSegment)) {
+                        foundStarMap = getOwn(starMap, nameSegment);
+                        starI = i;
+                    }
+                }
+
+                if (!foundMap && foundStarMap) {
+                    foundMap = foundStarMap;
+                    foundI = starI;
+                }
+
+                if (foundMap) {
+                    nameParts.splice(0, foundI, foundMap);
+                    name = nameParts.join('/');
+                }
+            }
+
+            return name;
+        }
+
+        function removeScript(name) {
+            if (isBrowser) {
+                each(scripts(), function (scriptNode) {
+                    if (scriptNode.getAttribute('data-requiremodule') === name &&
+                            scriptNode.getAttribute('data-requirecontext') === context.contextName) {
+                        scriptNode.parentNode.removeChild(scriptNode);
+                        return true;
+                    }
+                });
+            }
+        }
+
+        function hasPathFallback(id) {
+            var pathConfig = getOwn(config.paths, id);
+            if (pathConfig && isArray(pathConfig) && pathConfig.length > 1) {
+                removeScript(id);
+                //Pop off the first array value, since it failed, and
+                //retry
+                pathConfig.shift();
+                context.require.undef(id);
+                context.require([id]);
+                return true;
+            }
+        }
+
+        //Turns a plugin!resource to [plugin, resource]
+        //with the plugin being undefined if the name
+        //did not have a plugin prefix.
+        function splitPrefix(name) {
+            var prefix,
+                index = name ? name.indexOf('!') : -1;
+            if (index > -1) {
+                prefix = name.substring(0, index);
+                name = name.substring(index + 1, name.length);
+            }
+            return [prefix, name];
+        }
+
+        /**
+         * Creates a module mapping that includes plugin prefix, module
+         * name, and path. If parentModuleMap is provided it will
+         * also normalize the name via require.normalize()
+         *
+         * @param {String} name the module name
+         * @param {String} [parentModuleMap] parent module map
+         * for the module name, used to resolve relative names.
+         * @param {Boolean} isNormalized: is the ID already normalized.
+         * This is true if this call is done for a define() module ID.
+         * @param {Boolean} applyMap: apply the map config to the ID.
+         * Should only be true if this map is for a dependency.
+         *
+         * @returns {Object}
+         */
+        function makeModuleMap(name, parentModuleMap, isNormalized, applyMap) {
+            var url, pluginModule, suffix, nameParts,
+                prefix = null,
+                parentName = parentModuleMap ? parentModuleMap.name : null,
+                originalName = name,
+                isDefine = true,
+                normalizedName = '';
+
+            //If no name, then it means it is a require call, generate an
+            //internal name.
+            if (!name) {
+                isDefine = false;
+                name = '_@r' + (requireCounter += 1);
+            }
+
+            nameParts = splitPrefix(name);
+            prefix = nameParts[0];
+            name = nameParts[1];
+
+            if (prefix) {
+                prefix = normalize(prefix, parentName, applyMap);
+                pluginModule = getOwn(defined, prefix);
+            }
+
+            //Account for relative paths if there is a base name.
+            if (name) {
+                if (prefix) {
+                    if (pluginModule && pluginModule.normalize) {
+                        //Plugin is loaded, use its normalize method.
+                        normalizedName = pluginModule.normalize(name, function (name) {
+                            return normalize(name, parentName, applyMap);
+                        });
+                    } else {
+                        normalizedName = normalize(name, parentName, applyMap);
+                    }
+                } else {
+                    //A regular module.
+                    normalizedName = normalize(name, parentName, applyMap);
+
+                    //Normalized name may be a plugin ID due to map config
+                    //application in normalize. The map config values must
+                    //already be normalized, so do not need to redo that part.
+                    nameParts = splitPrefix(normalizedName);
+                    prefix = nameParts[0];
+                    normalizedName = nameParts[1];
+                    isNormalized = true;
+
+                    url = context.nameToUrl(normalizedName);
+                }
+            }
+
+            //If the id is a plugin id that cannot be determined if it needs
+            //normalization, stamp it with a unique ID so two matching relative
+            //ids that may conflict can be separate.
+            suffix = prefix && !pluginModule && !isNormalized ?
+                     '_unnormalized' + (unnormalizedCounter += 1) :
+                     '';
+
+            return {
+                prefix: prefix,
+                name: normalizedName,
+                parentMap: parentModuleMap,
+                unnormalized: !!suffix,
+                url: url,
+                originalName: originalName,
+                isDefine: isDefine,
+                id: (prefix ?
+                        prefix + '!' + normalizedName :
+                        normalizedName) + suffix
+            };
+        }
+
+        function getModule(depMap) {
+            var id = depMap.id,
+                mod = getOwn(registry, id);
+
+            if (!mod) {
+                mod = registry[id] = new context.Module(depMap);
+            }
+
+            return mod;
+        }
+
+        function on(depMap, name, fn) {
+            var id = depMap.id,
+                mod = getOwn(registry, id);
+
+            if (hasProp(defined, id) &&
+                    (!mod || mod.defineEmitComplete)) {
+                if (name === 'defined') {
+                    fn(defined[id]);
+                }
+            } else {
+                mod = getModule(depMap);
+                if (mod.error && name === 'error') {
+                    fn(mod.error);
+                } else {
+                    mod.on(name, fn);
+                }
+            }
+        }
+
+        function onError(err, errback) {
+            var ids = err.requireModules,
+                notified = false;
+
+            if (errback) {
+                errback(err);
+            } else {
+                each(ids, function (id) {
+                    var mod = getOwn(registry, id);
+                    if (mod) {
+                        //Set error on module, so it skips timeout checks.
+                        mod.error = err;
+                        if (mod.events.error) {
+                            notified = true;
+                            mod.emit('error', err);
+                        }
+                    }
+                });
+
+                if (!notified) {
+                    req.onError(err);
+                }
+            }
+        }
+
+        /**
+         * Internal method to transfer globalQueue items to this context's
+         * defQueue.
+         */
+        function takeGlobalQueue() {
+            //Push all the globalDefQueue items into the context's defQueue
+            if (globalDefQueue.length) {
+                //Array splice in the values since the context code has a
+                //local var ref to defQueue, so cannot just reassign the one
+                //on context.
+                apsp.apply(defQueue,
+                           [defQueue.length - 1, 0].concat(globalDefQueue));
+                globalDefQueue = [];
+            }
+        }
+
+        handlers = {
+            'require': function (mod) {
+                if (mod.require) {
+                    return mod.require;
+                } else {
+                    return (mod.require = context.makeRequire(mod.map));
+                }
+            },
+            'exports': function (mod) {
+                mod.usingExports = true;
+                if (mod.map.isDefine) {
+                    if (mod.exports) {
+                        return mod.exports;
+                    } else {
+                        return (mod.exports = defined[mod.map.id] = {});
+                    }
+                }
+            },
+            'module': function (mod) {
+                if (mod.module) {
+                    return mod.module;
+                } else {
+                    return (mod.module = {
+                        id: mod.map.id,
+                        uri: mod.map.url,
+                        config: function () {
+                            var c,
+                                pkg = getOwn(config.pkgs, mod.map.id);
+                            // For packages, only support config targeted
+                            // at the main module.
+                            c = pkg ? getOwn(config.config, mod.map.id + '/' + pkg.main) :
+                                      getOwn(config.config, mod.map.id);
+                            return  c || {};
+                        },
+                        exports: defined[mod.map.id]
+                    });
+                }
+            }
+        };
+
+        function cleanRegistry(id) {
+            //Clean up machinery used for waiting modules.
+            delete registry[id];
+            delete enabledRegistry[id];
+        }
+
+        function breakCycle(mod, traced, processed) {
+            var id = mod.map.id;
+
+            if (mod.error) {
+                mod.emit('error', mod.error);
+            } else {
+                traced[id] = true;
+                each(mod.depMaps, function (depMap, i) {
+                    var depId = depMap.id,
+                        dep = getOwn(registry, depId);
+
+                    //Only force things that have not completed
+                    //being defined, so still in the registry,
+                    //and only if it has not been matched up
+                    //in the module already.
+                    if (dep && !mod.depMatched[i] && !processed[depId]) {
+                        if (getOwn(traced, depId)) {
+                            mod.defineDep(i, defined[depId]);
+                            mod.check(); //pass false?
+                        } else {
+                            breakCycle(dep, traced, processed);
+                        }
+                    }
+                });
+                processed[id] = true;
+            }
+        }
+
+        function checkLoaded() {
+            var map, modId, err, usingPathFallback,
+                waitInterval = config.waitSeconds * 1000,
+                //It is possible to disable the wait interval by using waitSeconds of 0.
+                expired = waitInterval && (context.startTime + waitInterval) < new Date().getTime(),
+                noLoads = [],
+                reqCalls = [],
+                stillLoading = false,
+                needCycleCheck = true;
+
+            //Do not bother if this call was a result of a cycle break.
+            if (inCheckLoaded) {
+                return;
+            }
+
+            inCheckLoaded = true;
+
+            //Figure out the state of all the modules.
+            eachProp(enabledRegistry, function (mod) {
+                map = mod.map;
+                modId = map.id;
+
+                //Skip things that are not enabled or in error state.
+                if (!mod.enabled) {
+                    return;
+                }
+
+                if (!map.isDefine) {
+                    reqCalls.push(mod);
+                }
+
+                if (!mod.error) {
+                    //If the module should be executed, and it has not
+                    //been inited and time is up, remember it.
+                    if (!mod.inited && expired) {
+                        if (hasPathFallback(modId)) {
+                            usingPathFallback = true;
+                            stillLoading = true;
+                        } else {
+                            noLoads.push(modId);
+                            removeScript(modId);
+                        }
+                    } else if (!mod.inited && mod.fetched && map.isDefine) {
+                        stillLoading = true;
+                        if (!map.prefix) {
+                            //No reason to keep looking for unfinished
+                            //loading. If the only stillLoading is a
+                            //plugin resource though, keep going,
+                            //because it may be that a plugin resource
+                            //is waiting on a non-plugin cycle.
+                            return (needCycleCheck = false);
+                        }
+                    }
+                }
+            });
+
+            if (expired && noLoads.length) {
+                //If wait time expired, throw error of unloaded modules.
+                err = makeError('timeout', 'Load timeout for modules: ' + noLoads, null, noLoads);
+                err.contextName = context.contextName;
+                return onError(err);
+            }
+
+            //Not expired, check for a cycle.
+            if (needCycleCheck) {
+                each(reqCalls, function (mod) {
+                    breakCycle(mod, {}, {});
+                });
+            }
+
+            //If still waiting on loads, and the waiting load is something
+            //other than a plugin resource, or there are still outstanding
+            //scripts, then just try back later.
+            if ((!expired || usingPathFallback) && stillLoading) {
+                //Something is still waiting to load. Wait for it, but only
+                //if a timeout is not already in effect.
+                if ((isBrowser || isWebWorker) && !checkLoadedTimeoutId) {
+                    checkLoadedTimeoutId = setTimeout(function () {
+                        checkLoadedTimeoutId = 0;
+                        checkLoaded();
+                    }, 50);
+                }
+            }
+
+            inCheckLoaded = false;
+        }
+
+        Module = function (map) {
+            this.events = getOwn(undefEvents, map.id) || {};
+            this.map = map;
+            this.shim = getOwn(config.shim, map.id);
+            this.depExports = [];
+            this.depMaps = [];
+            this.depMatched = [];
+            this.pluginMaps = {};
+            this.depCount = 0;
+
+            /* this.exports this.factory
+               this.depMaps = [],
+               this.enabled, this.fetched
+            */
+        };
+
+        Module.prototype = {
+            init: function (depMaps, factory, errback, options) {
+                options = options || {};
+
+                //Do not do more inits if already done. Can happen if there
+                //are multiple define calls for the same module. That is not
+                //a normal, common case, but it is also not unexpected.
+                if (this.inited) {
+                    return;
+                }
+
+                this.factory = factory;
+
+                if (errback) {
+                    //Register for errors on this module.
+                    this.on('error', errback);
+                } else if (this.events.error) {
+                    //If no errback already, but there are error listeners
+                    //on this module, set up an errback to pass to the deps.
+                    errback = bind(this, function (err) {
+                        this.emit('error', err);
+                    });
+                }
+
+                //Do a copy of the dependency array, so that
+                //source inputs are not modified. For example
+                //"shim" deps are passed in here directly, and
+                //doing a direct modification of the depMaps array
+                //would affect that config.
+                this.depMaps = depMaps && depMaps.slice(0);
+
+                this.errback = errback;
+
+                //Indicate this module has be initialized
+                this.inited = true;
+
+                this.ignore = options.ignore;
+
+                //Could have option to init this module in enabled mode,
+                //or could have been previously marked as enabled. However,
+                //the dependencies are not known until init is called. So
+                //if enabled previously, now trigger dependencies as enabled.
+                if (options.enabled || this.enabled) {
+                    //Enable this module and dependencies.
+                    //Will call this.check()
+                    this.enable();
+                } else {
+                    this.check();
+                }
+            },
+
+            defineDep: function (i, depExports) {
+                //Because of cycles, defined callback for a given
+                //export can be called more than once.
+                if (!this.depMatched[i]) {
+                    this.depMatched[i] = true;
+                    this.depCount -= 1;
+                    this.depExports[i] = depExports;
+                }
+            },
+
+            fetch: function () {
+                if (this.fetched) {
+                    return;
+                }
+                this.fetched = true;
+
+                context.startTime = (new Date()).getTime();
+
+                var map = this.map;
+
+                //If the manager is for a plugin managed resource,
+                //ask the plugin to load it now.
+                if (this.shim) {
+                    context.makeRequire(this.map, {
+                        enableBuildCallback: true
+                    })(this.shim.deps || [], bind(this, function () {
+                        return map.prefix ? this.callPlugin() : this.load();
+                    }));
+                } else {
+                    //Regular dependency.
+                    return map.prefix ? this.callPlugin() : this.load();
+                }
+            },
+
+            load: function () {
+                var url = this.map.url;
+
+                //Regular dependency.
+                if (!urlFetched[url]) {
+                    urlFetched[url] = true;
+                    context.load(this.map.id, url);
+                }
+            },
+
+            /**
+             * Checks if the module is ready to define itself, and if so,
+             * define it.
+             */
+            check: function () {
+                if (!this.enabled || this.enabling) {
+                    return;
+                }
+
+                var err, cjsModule,
+                    id = this.map.id,
+                    depExports = this.depExports,
+                    exports = this.exports,
+                    factory = this.factory;
+
+                if (!this.inited) {
+                    this.fetch();
+                } else if (this.error) {
+                    this.emit('error', this.error);
+                } else if (!this.defining) {
+                    //The factory could trigger another require call
+                    //that would result in checking this module to
+                    //define itself again. If already in the process
+                    //of doing that, skip this work.
+                    this.defining = true;
+
+                    if (this.depCount < 1 && !this.defined) {
+                        if (isFunction(factory)) {
+                            //If there is an error listener, favor passing
+                            //to that instead of throwing an error. However,
+                            //only do it for define()'d  modules. require
+                            //errbacks should not be called for failures in
+                            //their callbacks (#699). However if a global
+                            //onError is set, use that.
+                            if ((this.events.error && this.map.isDefine) ||
+                                req.onError !== defaultOnError) {
+                                try {
+                                    exports = context.execCb(id, factory, depExports, exports);
+                                } catch (e) {
+                                    err = e;
+                                }
+                            } else {
+                                exports = context.execCb(id, factory, depExports, exports);
+                            }
+
+                            if (this.map.isDefine) {
+                                //If setting exports via 'module' is in play,
+                                //favor that over return value and exports. After that,
+                                //favor a non-undefined return value over exports use.
+                                cjsModule = this.module;
+                                if (cjsModule &&
+                                        cjsModule.exports !== undefined &&
+                                        //Make sure it is not already the exports value
+                                        cjsModule.exports !== this.exports) {
+                                    exports = cjsModule.exports;
+                                } else if (exports === undefined && this.usingExports) {
+                                    //exports already set the defined value.
+                                    exports = this.exports;
+                                }
+                            }
+
+                            if (err) {
+                                err.requireMap = this.map;
+                                err.requireModules = this.map.isDefine ? [this.map.id] : null;
+                                err.requireType = this.map.isDefine ? 'define' : 'require';
+                                return onError((this.error = err));
+                            }
+
+                        } else {
+                            //Just a literal value
+                            exports = factory;
+                        }
+
+                        this.exports = exports;
+
+                        if (this.map.isDefine && !this.ignore) {
+                            defined[id] = exports;
+
+                            if (req.onResourceLoad) {
+                                req.onResourceLoad(context, this.map, this.depMaps);
+                            }
+                        }
+
+                        //Clean up
+                        cleanRegistry(id);
+
+                        this.defined = true;
+                    }
+
+                    //Finished the define stage. Allow calling check again
+                    //to allow define notifications below in the case of a
+                    //cycle.
+                    this.defining = false;
+
+                    if (this.defined && !this.defineEmitted) {
+                        this.defineEmitted = true;
+                        this.emit('defined', this.exports);
+                        this.defineEmitComplete = true;
+                    }
+
+                }
+            },
+
+            callPlugin: function () {
+                var map = this.map,
+                    id = map.id,
+                    //Map already normalized the prefix.
+                    pluginMap = makeModuleMap(map.prefix);
+
+                //Mark this as a dependency for this plugin, so it
+                //can be traced for cycles.
+                this.depMaps.push(pluginMap);
+
+                on(pluginMap, 'defined', bind(this, function (plugin) {
+                    var load, normalizedMap, normalizedMod,
+                        name = this.map.name,
+                        parentName = this.map.parentMap ? this.map.parentMap.name : null,
+                        localRequire = context.makeRequire(map.parentMap, {
+                            enableBuildCallback: true
+                        });
+
+                    //If current map is not normalized, wait for that
+                    //normalized name to load instead of continuing.
+                    if (this.map.unnormalized) {
+                        //Normalize the ID if the plugin allows it.
+                        if (plugin.normalize) {
+                            name = plugin.normalize(name, function (name) {
+                                return normalize(name, parentName, true);
+                            }) || '';
+                        }
+
+                        //prefix and name should already be normalized, no need
+                        //for applying map config again either.
+                        normalizedMap = makeModuleMap(map.prefix + '!' + name,
+                                                      this.map.parentMap);
+                        on(normalizedMap,
+                            'defined', bind(this, function (value) {
+                                this.init([], function () { return value; }, null, {
+                                    enabled: true,
+                                    ignore: true
+                                });
+                            }));
+
+                        normalizedMod = getOwn(registry, normalizedMap.id);
+                        if (normalizedMod) {
+                            //Mark this as a dependency for this plugin, so it
+                            //can be traced for cycles.
+                            this.depMaps.push(normalizedMap);
+
+                            if (this.events.error) {
+                                normalizedMod.on('error', bind(this, function (err) {
+                                    this.emit('error', err);
+                                }));
+                            }
+                            normalizedMod.enable();
+                        }
+
+                        return;
+                    }
+
+                    load = bind(this, function (value) {
+                        this.init([], function () { return value; }, null, {
+                            enabled: true
+                        });
+                    });
+
+                    load.error = bind(this, function (err) {
+                        this.inited = true;
+                        this.error = err;
+                        err.requireModules = [id];
+
+                        //Remove temp unnormalized modules for this module,
+                        //since they will never be resolved otherwise now.
+                        eachProp(registry, function (mod) {
+                            if (mod.map.id.indexOf(id + '_unnormalized') === 0) {
+                                cleanRegistry(mod.map.id);
+                            }
+                        });
+
+                        onError(err);
+                    });
+
+                    //Allow plugins to load other code without having to know the
+                    //context or how to 'complete' the load.
+                    load.fromText = bind(this, function (text, textAlt) {
+                        /*jslint evil: true */
+                        var moduleName = map.name,
+                            moduleMap = makeModuleMap(moduleName),
+                            hasInteractive = useInteractive;
+
+                        //As of 2.1.0, support just passing the text, to reinforce
+                        //fromText only being called once per resource. Still
+                        //support old style of passing moduleName but discard
+                        //that moduleName in favor of the internal ref.
+                        if (textAlt) {
+                            text = textAlt;
+                        }
+
+                        //Turn off interactive script matching for IE for any define
+                        //calls in the text, then turn it back on at the end.
+                        if (hasInteractive) {
+                            useInteractive = false;
+                        }
+
+                        //Prime the system by creating a module instance for
+                        //it.
+                        getModule(moduleMap);
+
+                        //Transfer any config to this other module.
+                        if (hasProp(config.config, id)) {
+                            config.config[moduleName] = config.config[id];
+                        }
+
+                        try {
+                            req.exec(text);
+                        } catch (e) {
+                            return onError(makeError('fromtexteval',
+                                             'fromText eval for ' + id +
+                                            ' failed: ' + e,
+                                             e,
+                                             [id]));
+                        }
+
+                        if (hasInteractive) {
+                            useInteractive = true;
+                        }
+
+                        //Mark this as a dependency for the plugin
+                        //resource
+                        this.depMaps.push(moduleMap);
+
+                        //Support anonymous modules.
+                        context.completeLoad(moduleName);
+
+                        //Bind the value of that module to the value for this
+                        //resource ID.
+                        localRequire([moduleName], load);
+                    });
+
+                    //Use parentName here since the plugin's name is not reliable,
+                    //could be some weird string with no path that actually wants to
+                    //reference the parentName's path.
+                    plugin.load(map.name, localRequire, load, config);
+                }));
+
+                context.enable(pluginMap, this);
+                this.pluginMaps[pluginMap.id] = pluginMap;
+            },
+
+            enable: function () {
+                enabledRegistry[this.map.id] = this;
+                this.enabled = true;
+
+                //Set flag mentioning that the module is enabling,
+                //so that immediate calls to the defined callbacks
+                //for dependencies do not trigger inadvertent load
+                //with the depCount still being zero.
+                this.enabling = true;
+
+                //Enable each dependency
+                each(this.depMaps, bind(this, function (depMap, i) {
+                    var id, mod, handler;
+
+                    if (typeof depMap === 'string') {
+                        //Dependency needs to be converted to a depMap
+                        //and wired up to this module.
+                        depMap = makeModuleMap(depMap,
+                                               (this.map.isDefine ? this.map : this.map.parentMap),
+                                               false,
+                                               !this.skipMap);
+                        this.depMaps[i] = depMap;
+
+                        handler = getOwn(handlers, depMap.id);
+
+                        if (handler) {
+                            this.depExports[i] = handler(this);
+                            return;
+                        }
+
+                        this.depCount += 1;
+
+                        on(depMap, 'defined', bind(this, function (depExports) {
+                            this.defineDep(i, depExports);
+                            this.check();
+                        }));
+
+                        if (this.errback) {
+                            on(depMap, 'error', bind(this, this.errback));
+                        }
+                    }
+
+                    id = depMap.id;
+                    mod = registry[id];
+
+                    //Skip special modules like 'require', 'exports', 'module'
+                    //Also, don't call enable if it is already enabled,
+                    //important in circular dependency cases.
+                    if (!hasProp(handlers, id) && mod && !mod.enabled) {
+                        context.enable(depMap, this);
+                    }
+                }));
+
+                //Enable each plugin that is used in
+                //a dependency
+                eachProp(this.pluginMaps, bind(this, function (pluginMap) {
+                    var mod = getOwn(registry, pluginMap.id);
+                    if (mod && !mod.enabled) {
+                        context.enable(pluginMap, this);
+                    }
+                }));
+
+                this.enabling = false;
+
+                this.check();
+            },
+
+            on: function (name, cb) {
+                var cbs = this.events[name];
+                if (!cbs) {
+                    cbs = this.events[name] = [];
+                }
+                cbs.push(cb);
+            },
+
+            emit: function (name, evt) {
+                each(this.events[name], function (cb) {
+                    cb(evt);
+                });
+                if (name === 'error') {
+                    //Now that the error handler was triggered, remove
+                    //the listeners, since this broken Module instance
+                    //can stay around for a while in the registry.
+                    delete this.events[name];
+                }
+            }
+        };
+
+        function callGetModule(args) {
+            //Skip modules already defined.
+            if (!hasProp(defined, args[0])) {
+                getModule(makeModuleMap(args[0], null, true)).init(args[1], args[2]);
+            }
+        }
+
+        function removeListener(node, func, name, ieName) {
+            //Favor detachEvent because of IE9
+            //issue, see attachEvent/addEventListener comment elsewhere
+            //in this file.
+            if (node.detachEvent && !isOpera) {
+                //Probably IE. If not it will throw an error, which will be
+                //useful to know.
+                if (ieName) {
+                    node.detachEvent(ieName, func);
+                }
+            } else {
+                node.removeEventListener(name, func, false);
+            }
+        }
+
+        /**
+         * Given an event from a script node, get the requirejs info from it,
+         * and then removes the event listeners on the node.
+         * @param {Event} evt
+         * @returns {Object}
+         */
+        function getScriptData(evt) {
+            //Using currentTarget instead of target for Firefox 2.0's sake. Not
+            //all old browsers will be supported, but this one was easy enough
+            //to support and still makes sense.
+            var node = evt.currentTarget || evt.srcElement;
+
+            //Remove the listeners once here.
+            removeListener(node, context.onScriptLoad, 'load', 'onreadystatechange');
+            removeListener(node, context.onScriptError, 'error');
+
+            return {
+                node: node,
+                id: node && node.getAttribute('data-requiremodule')
+            };
+        }
+
+        function intakeDefines() {
+            var args;
+
+            //Any defined modules in the global queue, intake them now.
+            takeGlobalQueue();
+
+            //Make sure any remaining defQueue items get properly processed.
+            while (defQueue.length) {
+                args = defQueue.shift();
+                if (args[0] === null) {
+                    return onError(makeError('mismatch', 'Mismatched anonymous define() module: ' + args[args.length - 1]));
+                } else {
+                    //args are id, deps, factory. Should be normalized by the
+                    //define() function.
+                    callGetModule(args);
+                }
+            }
+        }
+
+        context = {
+            config: config,
+            contextName: contextName,
+            registry: registry,
+            defined: defined,
+            urlFetched: urlFetched,
+            defQueue: defQueue,
+            Module: Module,
+            makeModuleMap: makeModuleMap,
+            nextTick: req.nextTick,
+            onError: onError,
+
+            /**
+             * Set a configuration for the context.
+             * @param {Object} cfg config object to integrate.
+             */
+            configure: function (cfg) {
+                //Make sure the baseUrl ends in a slash.
+                if (cfg.baseUrl) {
+                    if (cfg.baseUrl.charAt(cfg.baseUrl.length - 1) !== '/') {
+                        cfg.baseUrl += '/';
+                    }
+                }
+
+                //Save off the paths and packages since they require special processing,
+                //they are additive.
+                var pkgs = config.pkgs,
+                    shim = config.shim,
+                    objs = {
+                        paths: true,
+                        config: true,
+                        map: true
+                    };
+
+                eachProp(cfg, function (value, prop) {
+                    if (objs[prop]) {
+                        if (prop === 'map') {
+                            if (!config.map) {
+                                config.map = {};
+                            }
+                            mixin(config[prop], value, true, true);
+                        } else {
+                            mixin(config[prop], value, true);
+                        }
+                    } else {
+                        config[prop] = value;
+                    }
+                });
+
+                //Merge shim
+                if (cfg.shim) {
+                    eachProp(cfg.shim, function (value, id) {
+                        //Normalize the structure
+                        if (isArray(value)) {
+                            value = {
+                                deps: value
+                            };
+                        }
+                        if ((value.exports || value.init) && !value.exportsFn) {
+                            value.exportsFn = context.makeShimExports(value);
+                        }
+                        shim[id] = value;
+                    });
+                    config.shim = shim;
+                }
+
+                //Adjust packages if necessary.
+                if (cfg.packages) {
+                    each(cfg.packages, function (pkgObj) {
+                        var location;
+
+                        pkgObj = typeof pkgObj === 'string' ? { name: pkgObj } : pkgObj;
+                        location = pkgObj.location;
+
+                        //Create a brand new object on pkgs, since currentPackages can
+                        //be passed in again, and config.pkgs is the internal transformed
+                        //state for all package configs.
+                        pkgs[pkgObj.name] = {
+                            name: pkgObj.name,
+                            location: location || pkgObj.name,
+                            //Remove leading dot in main, so main paths are normalized,
+                            //and remove any trailing .js, since different package
+                            //envs have different conventions: some use a module name,
+                            //some use a file name.
+                            main: (pkgObj.main || 'main')
+                                  .replace(currDirRegExp, '')
+                                  .replace(jsSuffixRegExp, '')
+                        };
+                    });
+
+                    //Done with modifications, assing packages back to context config
+                    config.pkgs = pkgs;
+                }
+
+                //If there are any "waiting to execute" modules in the registry,
+                //update the maps for them, since their info, like URLs to load,
+                //may have changed.
+                eachProp(registry, function (mod, id) {
+                    //If module already has init called, since it is too
+                    //late to modify them, and ignore unnormalized ones
+                    //since they are transient.
+                    if (!mod.inited && !mod.map.unnormalized) {
+                        mod.map = makeModuleMap(id);
+                    }
+                });
+
+                //If a deps array or a config callback is specified, then call
+                //require with those args. This is useful when require is defined as a
+                //config object before require.js is loaded.
+                if (cfg.deps || cfg.callback) {
+                    context.require(cfg.deps || [], cfg.callback);
+                }
+            },
+
+            makeShimExports: function (value) {
+                function fn() {
+                    var ret;
+                    if (value.init) {
+                        ret = value.init.apply(global, arguments);
+                    }
+                    return ret || (value.exports && getGlobal(value.exports));
+                }
+                return fn;
+            },
+
+            makeRequire: function (relMap, options) {
+                options = options || {};
+
+                function localRequire(deps, callback, errback) {
+                    var id, map, requireMod;
+
+                    if (options.enableBuildCallback && callback && isFunction(callback)) {
+                        callback.__requireJsBuild = true;
+                    }
+
+                    if (typeof deps === 'string') {
+                        if (isFunction(callback)) {
+                            //Invalid call
+                            return onError(makeError('requireargs', 'Invalid require call'), errback);
+                        }
+
+                        //If require|exports|module are requested, get the
+                        //value for them from the special handlers. Caveat:
+                        //this only works while module is being defined.
+                        if (relMap && hasProp(handlers, deps)) {
+                            return handlers[deps](registry[relMap.id]);
+                        }
+
+                        //Synchronous access to one module. If require.get is
+                        //available (as in the Node adapter), prefer that.
+                        if (req.get) {
+                            return req.get(context, deps, relMap, localRequire);
+                        }
+
+                        //Normalize module name, if it contains . or ..
+                        map = makeModuleMap(deps, relMap, false, true);
+                        id = map.id;
+
+                        if (!hasProp(defined, id)) {
+                            return onError(makeError('notloaded', 'Module name "' +
+                                        id +
+                                        '" has not been loaded yet for context: ' +
+                                        contextName +
+                                        (relMap ? '' : '. Use require([])')));
+                        }
+                        return defined[id];
+                    }
+
+                    //Grab defines waiting in the global queue.
+                    intakeDefines();
+
+                    //Mark all the dependencies as needing to be loaded.
+                    context.nextTick(function () {
+                        //Some defines could have been added since the
+                        //require call, collect them.
+                        intakeDefines();
+
+                        requireMod = getModule(makeModuleMap(null, relMap));
+
+                        //Store if map config should be applied to this require
+                        //call for dependencies.
+                        requireMod.skipMap = options.skipMap;
+
+                        requireMod.init(deps, callback, errback, {
+                            enabled: true
+                        });
+
+                        checkLoaded();
+                    });
+
+                    return localRequire;
+                }
+
+                mixin(localRequire, {
+                    isBrowser: isBrowser,
+
+                    /**
+                     * Converts a module name + .extension into an URL path.
+                     * *Requires* the use of a module name. It does not support using
+                     * plain URLs like nameToUrl.
+                     */
+                    toUrl: function (moduleNamePlusExt) {
+                        var ext,
+                            index = moduleNamePlusExt.lastIndexOf('.'),
+                            segment = moduleNamePlusExt.split('/')[0],
+                            isRelative = segment === '.' || segment === '..';
+
+                        //Have a file extension alias, and it is not the
+                        //dots from a relative path.
+                        if (index !== -1 && (!isRelative || index > 1)) {
+                            ext = moduleNamePlusExt.substring(index, moduleNamePlusExt.length);
+                            moduleNamePlusExt = moduleNamePlusExt.substring(0, index);
+                        }
+
+                        return context.nameToUrl(normalize(moduleNamePlusExt,
+                                                relMap && relMap.id, true), ext,  true);
+                    },
+
+                    defined: function (id) {
+                        return hasProp(defined, makeModuleMap(id, relMap, false, true).id);
+                    },
+
+                    specified: function (id) {
+                        id = makeModuleMap(id, relMap, false, true).id;
+                        return hasProp(defined, id) || hasProp(registry, id);
+                    }
+                });
+
+                //Only allow undef on top level require calls
+                if (!relMap) {
+                    localRequire.undef = function (id) {
+                        //Bind any waiting define() calls to this context,
+                        //fix for #408
+                        takeGlobalQueue();
+
+                        var map = makeModuleMap(id, relMap, true),
+                            mod = getOwn(registry, id);
+
+                        delete defined[id];
+                        delete urlFetched[map.url];
+                        delete undefEvents[id];
+
+                        if (mod) {
+                            //Hold on to listeners in case the
+                            //module will be attempted to be reloaded
+                            //using a different config.
+                            if (mod.events.defined) {
+                                undefEvents[id] = mod.events;
+                            }
+
+                            cleanRegistry(id);
+                        }
+                    };
+                }
+
+                return localRequire;
+            },
+
+            /**
+             * Called to enable a module if it is still in the registry
+             * awaiting enablement. A second arg, parent, the parent module,
+             * is passed in for context, when this method is overriden by
+             * the optimizer. Not shown here to keep code compact.
+             */
+            enable: function (depMap) {
+                var mod = getOwn(registry, depMap.id);
+                if (mod) {
+                    getModule(depMap).enable();
+                }
+            },
+
+            /**
+             * Internal method used by environment adapters to complete a load event.
+             * A load event could be a script load or just a load pass from a synchronous
+             * load call.
+             * @param {String} moduleName the name of the module to potentially complete.
+             */
+            completeLoad: function (moduleName) {
+                var found, args, mod,
+                    shim = getOwn(config.shim, moduleName) || {},
+                    shExports = shim.exports;
+
+                takeGlobalQueue();
+
+                while (defQueue.length) {
+                    args = defQueue.shift();
+                    if (args[0] === null) {
+                        args[0] = moduleName;
+                        //If already found an anonymous module and bound it
+                        //to this name, then this is some other anon module
+                        //waiting for its completeLoad to fire.
+                        if (found) {
+                            break;
+                        }
+                        found = true;
+                    } else if (args[0] === moduleName) {
+                        //Found matching define call for this script!
+                        found = true;
+                    }
+
+                    callGetModule(args);
+                }
+
+                //Do this after the cycle of callGetModule in case the result
+                //of those calls/init calls changes the registry.
+                mod = getOwn(registry, moduleName);
+
+                if (!found && !hasProp(defined, moduleName) && mod && !mod.inited) {
+                    if (config.enforceDefine && (!shExports || !getGlobal(shExports))) {
+                        if (hasPathFallback(moduleName)) {
+                            return;
+                        } else {
+                            return onError(makeError('nodefine',
+                                             'No define call for ' + moduleName,
+                                             null,
+                                             [moduleName]));
+                        }
+                    } else {
+                        //A script that does not call define(), so just simulate
+                        //the call for it.
+                        callGetModule([moduleName, (shim.deps || []), shim.exportsFn]);
+                    }
+                }
+
+                checkLoaded();
+            },
+
+            /**
+             * Converts a module name to a file path. Supports cases where
+             * moduleName may actually be just an URL.
+             * Note that it **does not** call normalize on the moduleName,
+             * it is assumed to have already been normalized. This is an
+             * internal API, not a public one. Use toUrl for the public API.
+             */
+            nameToUrl: function (moduleName, ext, skipExt) {
+                var paths, pkgs, pkg, pkgPath, syms, i, parentModule, url,
+                    parentPath;
+
+                //If a colon is in the URL, it indicates a protocol is used and it is just
+                //an URL to a file, or if it starts with a slash, contains a query arg (i.e. ?)
+                //or ends with .js, then assume the user meant to use an url and not a module id.
+                //The slash is important for protocol-less URLs as well as full paths.
+                if (req.jsExtRegExp.test(moduleName)) {
+                    //Just a plain path, not module name lookup, so just return it.
+                    //Add extension if it is included. This is a bit wonky, only non-.js things pass
+                    //an extension, this method probably needs to be reworked.
+                    url = moduleName + (ext || '');
+                } else {
+                    //A module that needs to be converted to a path.
+                    paths = config.paths;
+                    pkgs = config.pkgs;
+
+                    syms = moduleName.split('/');
+                    //For each module name segment, see if there is a path
+                    //registered for it. Start with most specific name
+                    //and work up from it.
+                    for (i = syms.length; i > 0; i -= 1) {
+                        parentModule = syms.slice(0, i).join('/');
+                        pkg = getOwn(pkgs, parentModule);
+                        parentPath = getOwn(paths, parentModule);
+                        if (parentPath) {
+                            //If an array, it means there are a few choices,
+                            //Choose the one that is desired
+                            if (isArray(parentPath)) {
+                                parentPath = parentPath[0];
+                            }
+                            syms.splice(0, i, parentPath);
+                            break;
+                        } else if (pkg) {
+                            //If module name is just the package name, then looking
+                            //for the main module.
+                            if (moduleName === pkg.name) {
+                                pkgPath = pkg.location + '/' + pkg.main;
+                            } else {
+                                pkgPath = pkg.location;
+                            }
+                            syms.splice(0, i, pkgPath);
+                            break;
+                        }
+                    }
+
+                    //Join the path parts together, then figure out if baseUrl is needed.
+                    url = syms.join('/');
+                    url += (ext || (/\?/.test(url) || skipExt ? '' : '.js'));
+                    url = (url.charAt(0) === '/' || url.match(/^[\w\+\.\-]+:/) ? '' : config.baseUrl) + url;
+                }
+
+                return config.urlArgs ? url +
+                                        ((url.indexOf('?') === -1 ? '?' : '&') +
+                                         config.urlArgs) : url;
+            },
+
+            //Delegates to req.load. Broken out as a separate function to
+            //allow overriding in the optimizer.
+            load: function (id, url) {
+                req.load(context, id, url);
+            },
+
+            /**
+             * Executes a module callback function. Broken out as a separate function
+             * solely to allow the build system to sequence the files in the built
+             * layer in the right sequence.
+             *
+             * @private
+             */
+            execCb: function (name, callback, args, exports) {
+                return callback.apply(exports, args);
+            },
+
+            /**
+             * callback for script loads, used to check status of loading.
+             *
+             * @param {Event} evt the event from the browser for the script
+             * that was loaded.
+             */
+            onScriptLoad: function (evt) {
+                //Using currentTarget instead of target for Firefox 2.0's sake. Not
+                //all old browsers will be supported, but this one was easy enough
+                //to support and still makes sense.
+                if (evt.type === 'load' ||
+                        (readyRegExp.test((evt.currentTarget || evt.srcElement).readyState))) {
+                    //Reset interactive script so a script node is not held onto for
+                    //to long.
+                    interactiveScript = null;
+
+                    //Pull out the name of the module and the context.
+                    var data = getScriptData(evt);
+                    context.completeLoad(data.id);
+                }
+            },
+
+            /**
+             * Callback for script errors.
+             */
+            onScriptError: function (evt) {
+                var data = getScriptData(evt);
+                if (!hasPathFallback(data.id)) {
+                    return onError(makeError('scripterror', 'Script error for: ' + data.id, evt, [data.id]));
+                }
+            }
+        };
+
+        context.require = context.makeRequire();
+        return context;
+    }
+
+    /**
+     * Main entry point.
+     *
+     * If the only argument to require is a string, then the module that
+     * is represented by that string is fetched for the appropriate context.
+     *
+     * If the first argument is an array, then it will be treated as an array
+     * of dependency string names to fetch. An optional function callback can
+     * be specified to execute when all of those dependencies are available.
+     *
+     * Make a local req variable to help Caja compliance (it assumes things
+     * on a require that are not standardized), and to give a short
+     * name for minification/local scope use.
+     */
+    req = requirejs = function (deps, callback, errback, optional) {
+
+        //Find the right context, use default
+        var context, config,
+            contextName = defContextName;
+
+        // Determine if have config object in the call.
+        if (!isArray(deps) && typeof deps !== 'string') {
+            // deps is a config object
+            config = deps;
+            if (isArray(callback)) {
+                // Adjust args if there are dependencies
+                deps = callback;
+                callback = errback;
+                errback = optional;
+            } else {
+                deps = [];
+            }
+        }
+
+        if (config && config.context) {
+            contextName = config.context;
+        }
+
+        context = getOwn(contexts, contextName);
+        if (!context) {
+            context = contexts[contextName] = req.s.newContext(contextName);
+        }
+
+        if (config) {
+            context.configure(config);
+        }
+
+        return context.require(deps, callback, errback);
+    };
+
+    /**
+     * Support require.config() to make it easier to cooperate with other
+     * AMD loaders on globally agreed names.
+     */
+    req.config = function (config) {
+        return req(config);
+    };
+
+    /**
+     * Execute something after the current tick
+     * of the event loop. Override for other envs
+     * that have a better solution than setTimeout.
+     * @param  {Function} fn function to execute later.
+     */
+    req.nextTick = typeof setTimeout !== 'undefined' ? function (fn) {
+        setTimeout(fn, 4);
+    } : function (fn) { fn(); };
+
+    /**
+     * Export require as a global, but only if it does not already exist.
+     */
+    if (!require) {
+        require = req;
+    }
+
+    req.version = version;
+
+    //Used to filter out dependencies that are already paths.
+    req.jsExtRegExp = /^\/|:|\?|\.js$/;
+    req.isBrowser = isBrowser;
+    s = req.s = {
+        contexts: contexts,
+        newContext: newContext
+    };
+
+    //Create default context.
+    req({});
+
+    //Exports some context-sensitive methods on global require.
+    each([
+        'toUrl',
+        'undef',
+        'defined',
+        'specified'
+    ], function (prop) {
+        //Reference from contexts instead of early binding to default context,
+        //so that during builds, the latest instance of the default context
+        //with its config gets used.
+        req[prop] = function () {
+            var ctx = contexts[defContextName];
+            return ctx.require[prop].apply(ctx, arguments);
+        };
+    });
+
+    if (isBrowser) {
+        head = s.head = document.getElementsByTagName('head')[0];
+        //If BASE tag is in play, using appendChild is a problem for IE6.
+        //When that browser dies, this can be removed. Details in this jQuery bug:
+        //http://dev.jquery.com/ticket/2709
+        baseElement = document.getElementsByTagName('base')[0];
+        if (baseElement) {
+            head = s.head = baseElement.parentNode;
+        }
+    }
+
+    /**
+     * Any errors that require explicitly generates will be passed to this
+     * function. Intercept/override it if you want custom error handling.
+     * @param {Error} err the error object.
+     */
+    req.onError = defaultOnError;
+
+    /**
+     * Creates the node for the load command. Only used in browser envs.
+     */
+    req.createNode = function (config, moduleName, url) {
+        var node = config.xhtml ?
+                document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
+                document.createElement('script');
+        node.type = config.scriptType || 'text/javascript';
+        node.charset = 'utf-8';
+        node.async = true;
+        return node;
+    };
+
+    /**
+     * Does the request to load a module for the browser case.
+     * Make this a separate function to allow other environments
+     * to override it.
+     *
+     * @param {Object} context the require context to find state.
+     * @param {String} moduleName the name of the module.
+     * @param {Object} url the URL to the module.
+     */
+    req.load = function (context, moduleName, url) {
+        var config = (context && context.config) || {},
+            node;
+        if (isBrowser) {
+            //In the browser so use a script tag
+            node = req.createNode(config, moduleName, url);
+
+            node.setAttribute('data-requirecontext', context.contextName);
+            node.setAttribute('data-requiremodule', moduleName);
+
+            //Set up load listener. Test attachEvent first because IE9 has
+            //a subtle issue in its addEventListener and script onload firings
+            //that do not match the behavior of all other browsers with
+            //addEventListener support, which fire the onload event for a
+            //script right after the script execution. See:
+            //https://connect.microsoft.com/IE/feedback/details/648057/script-onload-event-is-not-fired-immediately-after-script-execution
+            //UNFORTUNATELY Opera implements attachEvent but does not follow the script
+            //script execution mode.
+            if (node.attachEvent &&
+                    //Check if node.attachEvent is artificially added by custom script or
+                    //natively supported by browser
+                    //read https://github.com/jrburke/requirejs/issues/187
+                    //if we can NOT find [native code] then it must NOT natively supported.
+                    //in IE8, node.attachEvent does not have toString()
+                    //Note the test for "[native code" with no closing brace, see:
+                    //https://github.com/jrburke/requirejs/issues/273
+                    !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) &&
+                    !isOpera) {
+                //Probably IE. IE (at least 6-8) do not fire
+                //script onload right after executing the script, so
+                //we cannot tie the anonymous define call to a name.
+                //However, IE reports the script as being in 'interactive'
+                //readyState at the time of the define call.
+                useInteractive = true;
+
+                node.attachEvent('onreadystatechange', context.onScriptLoad);
+                //It would be great to add an error handler here to catch
+                //404s in IE9+. However, onreadystatechange will fire before
+                //the error handler, so that does not help. If addEventListener
+                //is used, then IE will fire error before load, but we cannot
+                //use that pathway given the connect.microsoft.com issue
+                //mentioned above about not doing the 'script execute,
+                //then fire the script load event listener before execute
+                //next script' that other browsers do.
+                //Best hope: IE10 fixes the issues,
+                //and then destroys all installs of IE 6-9.
+                //node.attachEvent('onerror', context.onScriptError);
+            } else {
+                node.addEventListener('load', context.onScriptLoad, false);
+                node.addEventListener('error', context.onScriptError, false);
+            }
+            node.src = url;
+
+            //For some cache cases in IE 6-8, the script executes before the end
+            //of the appendChild execution, so to tie an anonymous define
+            //call to the module name (which is stored on the node), hold on
+            //to a reference to this node, but clear after the DOM insertion.
+            currentlyAddingScript = node;
+            if (baseElement) {
+                head.insertBefore(node, baseElement);
+            } else {
+                head.appendChild(node);
+            }
+            currentlyAddingScript = null;
+
+            return node;
+        } else if (isWebWorker) {
+            try {
+                //In a web worker, use importScripts. This is not a very
+                //efficient use of importScripts, importScripts will block until
+                //its script is downloaded and evaluated. However, if web workers
+                //are in play, the expectation that a build has been done so that
+                //only one script needs to be loaded anyway. This may need to be
+                //reevaluated if other use cases become common.
+                importScripts(url);
+
+                //Account for anonymous modules
+                context.completeLoad(moduleName);
+            } catch (e) {
+                context.onError(makeError('importscripts',
+                                'importScripts failed for ' +
+                                    moduleName + ' at ' + url,
+                                e,
+                                [moduleName]));
+            }
+        }
+    };
+
+    function getInteractiveScript() {
+        if (interactiveScript && interactiveScript.readyState === 'interactive') {
+            return interactiveScript;
+        }
+
+        eachReverse(scripts(), function (script) {
+            if (script.readyState === 'interactive') {
+                return (interactiveScript = script);
+            }
+        });
+        return interactiveScript;
+    }
+
+    //Look for a data-main script attribute, which could also adjust the baseUrl.
+    if (isBrowser) {
+        //Figure out baseUrl. Get it from the script tag with require.js in it.
+        eachReverse(scripts(), function (script) {
+            //Set the 'head' where we can append children by
+            //using the script's parent.
+            if (!head) {
+                head = script.parentNode;
+            }
+
+            //Look for a data-main attribute to set main script for the page
+            //to load. If it is there, the path to data main becomes the
+            //baseUrl, if it is not already set.
+            dataMain = script.getAttribute('data-main');
+            if (dataMain) {
+                //Preserve dataMain in case it is a path (i.e. contains '?')
+                mainScript = dataMain;
+
+                //Set final baseUrl if there is not already an explicit one.
+                if (!cfg.baseUrl) {
+                    //Pull off the directory of data-main for use as the
+                    //baseUrl.
+                    src = mainScript.split('/');
+                    mainScript = src.pop();
+                    subPath = src.length ? src.join('/')  + '/' : './';
+
+                    cfg.baseUrl = subPath;
+                }
+
+                //Strip off any trailing .js since mainScript is now
+                //like a module name.
+                mainScript = mainScript.replace(jsSuffixRegExp, '');
+
+                 //If mainScript is still a path, fall back to dataMain
+                if (req.jsExtRegExp.test(mainScript)) {
+                    mainScript = dataMain;
+                }
+
+                //Put the data-main script in the files to load.
+                cfg.deps = cfg.deps ? cfg.deps.concat(mainScript) : [mainScript];
+
+                return true;
+            }
+        });
+    }
+
+    /**
+     * The function that handles definitions of modules. Differs from
+     * require() in that a string for the module should be the first argument,
+     * and the function to execute after dependencies are loaded should
+     * return a value to define the module corresponding to the first argument's
+     * name.
+     */
+    define = function (name, deps, callback) {
+        var node, context;
+
+        //Allow for anonymous modules
+        if (typeof name !== 'string') {
+            //Adjust args appropriately
+            callback = deps;
+            deps = name;
+            name = null;
+        }
+
+        //This module may not have dependencies
+        if (!isArray(deps)) {
+            callback = deps;
+            deps = null;
+        }
+
+        //If no name, and callback is a function, then figure out if it a
+        //CommonJS thing with dependencies.
+        if (!deps && isFunction(callback)) {
+            deps = [];
+            //Remove comments from the callback string,
+            //look for require calls, and pull them into the dependencies,
+            //but only if there are function args.
+            if (callback.length) {
+                callback
+                    .toString()
+                    .replace(commentRegExp, '')
+                    .replace(cjsRequireRegExp, function (match, dep) {
+                        deps.push(dep);
+                    });
+
+                //May be a CommonJS thing even without require calls, but still
+                //could use exports, and module. Avoid doing exports and module
+                //work though if it just needs require.
+                //REQUIRES the function to expect the CommonJS variables in the
+                //order listed below.
+                deps = (callback.length === 1 ? ['require'] : ['require', 'exports', 'module']).concat(deps);
+            }
+        }
+
+        //If in IE 6-8 and hit an anonymous define() call, do the interactive
+        //work.
+        if (useInteractive) {
+            node = currentlyAddingScript || getInteractiveScript();
+            if (node) {
+                if (!name) {
+                    name = node.getAttribute('data-requiremodule');
+                }
+                context = contexts[node.getAttribute('data-requirecontext')];
+            }
+        }
+
+        //Always save off evaluating the def call until the script onload handler.
+        //This allows multiple modules to be in a file without prematurely
+        //tracing dependencies, and allows for anonymous module support,
+        //where the module name is not known until the script onload event
+        //occurs. If no context, use the global queue, and get it processed
+        //in the onscript load callback.
+        (context ? context.defQueue : globalDefQueue).push([name, deps, callback]);
+    };
+
+    define.amd = {
+        jQuery: true
+    };
+
+
+    /**
+     * Executes the text. Normally just uses eval, but can be modified
+     * to use a better, environment-specific call. Only used for transpiling
+     * loader plugins, not for plain JS modules.
+     * @param {String} text the text to execute/evaluate.
+     */
+    req.exec = function (text) {
+        /*jslint evil: true */
+        return eval(text);
+    };
+
+    //Set up with config info.
+    req(cfg);
+}(this));
diff --git a/v3/js/togetherjs/togetherjs/libs/require.js b/v3/js/togetherjs/togetherjs/libs/require.js
new file mode 100644
index 000000000..7ff409d9c
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/require.js
@@ -0,0 +1,36 @@
+/*
+ RequireJS 2.1.8 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
+ Available via the MIT or new BSD license.
+ see: http://github.com/jrburke/requirejs for details
+*/
+var requirejs,require,define;
+(function(Z){function H(b){return"[object Function]"===L.call(b)}function I(b){return"[object Array]"===L.call(b)}function y(b,c){if(b){var d;for(d=0;d<b.length&&(!b[d]||!c(b[d],d,b));d+=1);}}function M(b,c){if(b){var d;for(d=b.length-1;-1<d&&(!b[d]||!c(b[d],d,b));d-=1);}}function s(b,c){return ga.call(b,c)}function l(b,c){return s(b,c)&&b[c]}function F(b,c){for(var d in b)if(s(b,d)&&c(b[d],d))break}function Q(b,c,d,h){c&&F(c,function(c,j){if(d||!s(b,j))h&&"string"!==typeof c?(b[j]||(b[j]={}),Q(b[j],
+c,d,h)):b[j]=c});return b}function u(b,c){return function(){return c.apply(b,arguments)}}function aa(b){throw b;}function ba(b){if(!b)return b;var c=Z;y(b.split("."),function(b){c=c[b]});return c}function A(b,c,d,h){c=Error(c+"\nhttp://requirejs.org/docs/errors.html#"+b);c.requireType=b;c.requireModules=h;d&&(c.originalError=d);return c}function ha(b){function c(a,f,b){var e,m,c,g,d,h,j,i=f&&f.split("/");e=i;var n=k.map,p=n&&n["*"];if(a&&"."===a.charAt(0))if(f){e=l(k.pkgs,f)?i=[f]:i.slice(0,i.length-
+1);f=a=e.concat(a.split("/"));for(e=0;f[e];e+=1)if(m=f[e],"."===m)f.splice(e,1),e-=1;else if(".."===m)if(1===e&&(".."===f[2]||".."===f[0]))break;else 0<e&&(f.splice(e-1,2),e-=2);e=l(k.pkgs,f=a[0]);a=a.join("/");e&&a===f+"/"+e.main&&(a=f)}else 0===a.indexOf("./")&&(a=a.substring(2));if(b&&n&&(i||p)){f=a.split("/");for(e=f.length;0<e;e-=1){c=f.slice(0,e).join("/");if(i)for(m=i.length;0<m;m-=1)if(b=l(n,i.slice(0,m).join("/")))if(b=l(b,c)){g=b;d=e;break}if(g)break;!h&&(p&&l(p,c))&&(h=l(p,c),j=e)}!g&&
+h&&(g=h,d=j);g&&(f.splice(0,d,g),a=f.join("/"))}return a}function d(a){z&&y(document.getElementsByTagName("script"),function(f){if(f.getAttribute("data-requiremodule")===a&&f.getAttribute("data-requirecontext")===i.contextName)return f.parentNode.removeChild(f),!0})}function h(a){var f=l(k.paths,a);if(f&&I(f)&&1<f.length)return d(a),f.shift(),i.require.undef(a),i.require([a]),!0}function $(a){var f,b=a?a.indexOf("!"):-1;-1<b&&(f=a.substring(0,b),a=a.substring(b+1,a.length));return[f,a]}function n(a,
+f,b,e){var m,B,g=null,d=f?f.name:null,h=a,j=!0,k="";a||(j=!1,a="_@r"+(L+=1));a=$(a);g=a[0];a=a[1];g&&(g=c(g,d,e),B=l(r,g));a&&(g?k=B&&B.normalize?B.normalize(a,function(a){return c(a,d,e)}):c(a,d,e):(k=c(a,d,e),a=$(k),g=a[0],k=a[1],b=!0,m=i.nameToUrl(k)));b=g&&!B&&!b?"_unnormalized"+(M+=1):"";return{prefix:g,name:k,parentMap:f,unnormalized:!!b,url:m,originalName:h,isDefine:j,id:(g?g+"!"+k:k)+b}}function q(a){var f=a.id,b=l(p,f);b||(b=p[f]=new i.Module(a));return b}function t(a,f,b){var e=a.id,m=l(p,
+e);if(s(r,e)&&(!m||m.defineEmitComplete))"defined"===f&&b(r[e]);else if(m=q(a),m.error&&"error"===f)b(m.error);else m.on(f,b)}function v(a,f){var b=a.requireModules,e=!1;if(f)f(a);else if(y(b,function(f){if(f=l(p,f))f.error=a,f.events.error&&(e=!0,f.emit("error",a))}),!e)j.onError(a)}function w(){R.length&&(ia.apply(G,[G.length-1,0].concat(R)),R=[])}function x(a){delete p[a];delete T[a]}function E(a,f,b){var e=a.map.id;a.error?a.emit("error",a.error):(f[e]=!0,y(a.depMaps,function(e,c){var g=e.id,
+d=l(p,g);d&&(!a.depMatched[c]&&!b[g])&&(l(f,g)?(a.defineDep(c,r[g]),a.check()):E(d,f,b))}),b[e]=!0)}function C(){var a,f,b,e,m=(b=1E3*k.waitSeconds)&&i.startTime+b<(new Date).getTime(),c=[],g=[],j=!1,l=!0;if(!U){U=!0;F(T,function(b){a=b.map;f=a.id;if(b.enabled&&(a.isDefine||g.push(b),!b.error))if(!b.inited&&m)h(f)?j=e=!0:(c.push(f),d(f));else if(!b.inited&&(b.fetched&&a.isDefine)&&(j=!0,!a.prefix))return l=!1});if(m&&c.length)return b=A("timeout","Load timeout for modules: "+c,null,c),b.contextName=
+i.contextName,v(b);l&&y(g,function(a){E(a,{},{})});if((!m||e)&&j)if((z||da)&&!V)V=setTimeout(function(){V=0;C()},50);U=!1}}function D(a){s(r,a[0])||q(n(a[0],null,!0)).init(a[1],a[2])}function J(a){var a=a.currentTarget||a.srcElement,b=i.onScriptLoad;a.detachEvent&&!W?a.detachEvent("onreadystatechange",b):a.removeEventListener("load",b,!1);b=i.onScriptError;(!a.detachEvent||W)&&a.removeEventListener("error",b,!1);return{node:a,id:a&&a.getAttribute("data-requiremodule")}}function K(){var a;for(w();G.length;){a=
+G.shift();if(null===a[0])return v(A("mismatch","Mismatched anonymous define() module: "+a[a.length-1]));D(a)}}var U,X,i,N,V,k={waitSeconds:7,baseUrl:"./",paths:{},pkgs:{},shim:{},config:{}},p={},T={},Y={},G=[],r={},S={},L=1,M=1;N={require:function(a){return a.require?a.require:a.require=i.makeRequire(a.map)},exports:function(a){a.usingExports=!0;if(a.map.isDefine)return a.exports?a.exports:a.exports=r[a.map.id]={}},module:function(a){return a.module?a.module:a.module={id:a.map.id,uri:a.map.url,config:function(){var b=
+l(k.pkgs,a.map.id);return(b?l(k.config,a.map.id+"/"+b.main):l(k.config,a.map.id))||{}},exports:r[a.map.id]}}};X=function(a){this.events=l(Y,a.id)||{};this.map=a;this.shim=l(k.shim,a.id);this.depExports=[];this.depMaps=[];this.depMatched=[];this.pluginMaps={};this.depCount=0};X.prototype={init:function(a,b,c,e){e=e||{};if(!this.inited){this.factory=b;if(c)this.on("error",c);else this.events.error&&(c=u(this,function(a){this.emit("error",a)}));this.depMaps=a&&a.slice(0);this.errback=c;this.inited=!0;
+this.ignore=e.ignore;e.enabled||this.enabled?this.enable():this.check()}},defineDep:function(a,b){this.depMatched[a]||(this.depMatched[a]=!0,this.depCount-=1,this.depExports[a]=b)},fetch:function(){if(!this.fetched){this.fetched=!0;i.startTime=(new Date).getTime();var a=this.map;if(this.shim)i.makeRequire(this.map,{enableBuildCallback:!0})(this.shim.deps||[],u(this,function(){return a.prefix?this.callPlugin():this.load()}));else return a.prefix?this.callPlugin():this.load()}},load:function(){var a=
+this.map.url;S[a]||(S[a]=!0,i.load(this.map.id,a))},check:function(){if(this.enabled&&!this.enabling){var a,b,c=this.map.id;b=this.depExports;var e=this.exports,m=this.factory;if(this.inited)if(this.error)this.emit("error",this.error);else{if(!this.defining){this.defining=!0;if(1>this.depCount&&!this.defined){if(H(m)){if(this.events.error&&this.map.isDefine||j.onError!==aa)try{e=i.execCb(c,m,b,e)}catch(d){a=d}else e=i.execCb(c,m,b,e);this.map.isDefine&&((b=this.module)&&void 0!==b.exports&&b.exports!==
+this.exports?e=b.exports:void 0===e&&this.usingExports&&(e=this.exports));if(a)return a.requireMap=this.map,a.requireModules=this.map.isDefine?[this.map.id]:null,a.requireType=this.map.isDefine?"define":"require",v(this.error=a)}else e=m;this.exports=e;if(this.map.isDefine&&!this.ignore&&(r[c]=e,j.onResourceLoad))j.onResourceLoad(i,this.map,this.depMaps);x(c);this.defined=!0}this.defining=!1;this.defined&&!this.defineEmitted&&(this.defineEmitted=!0,this.emit("defined",this.exports),this.defineEmitComplete=
+!0)}}else this.fetch()}},callPlugin:function(){var a=this.map,b=a.id,d=n(a.prefix);this.depMaps.push(d);t(d,"defined",u(this,function(e){var m,d;d=this.map.name;var g=this.map.parentMap?this.map.parentMap.name:null,h=i.makeRequire(a.parentMap,{enableBuildCallback:!0});if(this.map.unnormalized){if(e.normalize&&(d=e.normalize(d,function(a){return c(a,g,!0)})||""),e=n(a.prefix+"!"+d,this.map.parentMap),t(e,"defined",u(this,function(a){this.init([],function(){return a},null,{enabled:!0,ignore:!0})})),
+d=l(p,e.id)){this.depMaps.push(e);if(this.events.error)d.on("error",u(this,function(a){this.emit("error",a)}));d.enable()}}else m=u(this,function(a){this.init([],function(){return a},null,{enabled:!0})}),m.error=u(this,function(a){this.inited=!0;this.error=a;a.requireModules=[b];F(p,function(a){0===a.map.id.indexOf(b+"_unnormalized")&&x(a.map.id)});v(a)}),m.fromText=u(this,function(e,c){var d=a.name,g=n(d),B=O;c&&(e=c);B&&(O=!1);q(g);s(k.config,b)&&(k.config[d]=k.config[b]);try{j.exec(e)}catch(ca){return v(A("fromtexteval",
+"fromText eval for "+b+" failed: "+ca,ca,[b]))}B&&(O=!0);this.depMaps.push(g);i.completeLoad(d);h([d],m)}),e.load(a.name,h,m,k)}));i.enable(d,this);this.pluginMaps[d.id]=d},enable:function(){T[this.map.id]=this;this.enabling=this.enabled=!0;y(this.depMaps,u(this,function(a,b){var c,e;if("string"===typeof a){a=n(a,this.map.isDefine?this.map:this.map.parentMap,!1,!this.skipMap);this.depMaps[b]=a;if(c=l(N,a.id)){this.depExports[b]=c(this);return}this.depCount+=1;t(a,"defined",u(this,function(a){this.defineDep(b,
+a);this.check()}));this.errback&&t(a,"error",u(this,this.errback))}c=a.id;e=p[c];!s(N,c)&&(e&&!e.enabled)&&i.enable(a,this)}));F(this.pluginMaps,u(this,function(a){var b=l(p,a.id);b&&!b.enabled&&i.enable(a,this)}));this.enabling=!1;this.check()},on:function(a,b){var c=this.events[a];c||(c=this.events[a]=[]);c.push(b)},emit:function(a,b){y(this.events[a],function(a){a(b)});"error"===a&&delete this.events[a]}};i={config:k,contextName:b,registry:p,defined:r,urlFetched:S,defQueue:G,Module:X,makeModuleMap:n,
+nextTick:j.nextTick,onError:v,configure:function(a){a.baseUrl&&"/"!==a.baseUrl.charAt(a.baseUrl.length-1)&&(a.baseUrl+="/");var b=k.pkgs,c=k.shim,e={paths:!0,config:!0,map:!0};F(a,function(a,b){e[b]?"map"===b?(k.map||(k.map={}),Q(k[b],a,!0,!0)):Q(k[b],a,!0):k[b]=a});a.shim&&(F(a.shim,function(a,b){I(a)&&(a={deps:a});if((a.exports||a.init)&&!a.exportsFn)a.exportsFn=i.makeShimExports(a);c[b]=a}),k.shim=c);a.packages&&(y(a.packages,function(a){a="string"===typeof a?{name:a}:a;b[a.name]={name:a.name,
+location:a.location||a.name,main:(a.main||"main").replace(ja,"").replace(ea,"")}}),k.pkgs=b);F(p,function(a,b){!a.inited&&!a.map.unnormalized&&(a.map=n(b))});if(a.deps||a.callback)i.require(a.deps||[],a.callback)},makeShimExports:function(a){return function(){var b;a.init&&(b=a.init.apply(Z,arguments));return b||a.exports&&ba(a.exports)}},makeRequire:function(a,f){function d(e,c,h){var g,k;f.enableBuildCallback&&(c&&H(c))&&(c.__requireJsBuild=!0);if("string"===typeof e){if(H(c))return v(A("requireargs",
+"Invalid require call"),h);if(a&&s(N,e))return N[e](p[a.id]);if(j.get)return j.get(i,e,a,d);g=n(e,a,!1,!0);g=g.id;return!s(r,g)?v(A("notloaded",'Module name "'+g+'" has not been loaded yet for context: '+b+(a?"":". Use require([])"))):r[g]}K();i.nextTick(function(){K();k=q(n(null,a));k.skipMap=f.skipMap;k.init(e,c,h,{enabled:!0});C()});return d}f=f||{};Q(d,{isBrowser:z,toUrl:function(b){var d,f=b.lastIndexOf("."),g=b.split("/")[0];if(-1!==f&&(!("."===g||".."===g)||1<f))d=b.substring(f,b.length),b=
+b.substring(0,f);return i.nameToUrl(c(b,a&&a.id,!0),d,!0)},defined:function(b){return s(r,n(b,a,!1,!0).id)},specified:function(b){b=n(b,a,!1,!0).id;return s(r,b)||s(p,b)}});a||(d.undef=function(b){w();var c=n(b,a,!0),f=l(p,b);delete r[b];delete S[c.url];delete Y[b];f&&(f.events.defined&&(Y[b]=f.events),x(b))});return d},enable:function(a){l(p,a.id)&&q(a).enable()},completeLoad:function(a){var b,c,e=l(k.shim,a)||{},d=e.exports;for(w();G.length;){c=G.shift();if(null===c[0]){c[0]=a;if(b)break;b=!0}else c[0]===
+a&&(b=!0);D(c)}c=l(p,a);if(!b&&!s(r,a)&&c&&!c.inited){if(k.enforceDefine&&(!d||!ba(d)))return h(a)?void 0:v(A("nodefine","No define call for "+a,null,[a]));D([a,e.deps||[],e.exportsFn])}C()},nameToUrl:function(a,b,c){var e,d,h,g,i,n;if(j.jsExtRegExp.test(a))g=a+(b||"");else{e=k.paths;d=k.pkgs;g=a.split("/");for(i=g.length;0<i;i-=1)if(n=g.slice(0,i).join("/"),h=l(d,n),n=l(e,n)){I(n)&&(n=n[0]);g.splice(0,i,n);break}else if(h){a=a===h.name?h.location+"/"+h.main:h.location;g.splice(0,i,a);break}g=g.join("/");
+g+=b||(/\?/.test(g)||c?"":".js");g=("/"===g.charAt(0)||g.match(/^[\w\+\.\-]+:/)?"":k.baseUrl)+g}return k.urlArgs?g+((-1===g.indexOf("?")?"?":"&")+k.urlArgs):g},load:function(a,b){j.load(i,a,b)},execCb:function(a,b,c,e){return b.apply(e,c)},onScriptLoad:function(a){if("load"===a.type||ka.test((a.currentTarget||a.srcElement).readyState))P=null,a=J(a),i.completeLoad(a.id)},onScriptError:function(a){var b=J(a);if(!h(b.id))return v(A("scripterror","Script error for: "+b.id,a,[b.id]))}};i.require=i.makeRequire();
+return i}var j,w,x,C,J,D,P,K,q,fa,la=/(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,ma=/[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,ea=/\.js$/,ja=/^\.\//;w=Object.prototype;var L=w.toString,ga=w.hasOwnProperty,ia=Array.prototype.splice,z=!!("undefined"!==typeof window&&navigator&&window.document),da=!z&&"undefined"!==typeof importScripts,ka=z&&"PLAYSTATION 3"===navigator.platform?/^complete$/:/^(complete|loaded)$/,W="undefined"!==typeof opera&&"[object Opera]"===opera.toString(),E={},t={},R=[],O=
+!1;if("undefined"===typeof define){if("undefined"!==typeof requirejs){if(H(requirejs))return;t=requirejs;requirejs=void 0}"undefined"!==typeof require&&!H(require)&&(t=require,require=void 0);j=requirejs=function(b,c,d,h){var q,n="_";!I(b)&&"string"!==typeof b&&(q=b,I(c)?(b=c,c=d,d=h):b=[]);q&&q.context&&(n=q.context);(h=l(E,n))||(h=E[n]=j.s.newContext(n));q&&h.configure(q);return h.require(b,c,d)};j.config=function(b){return j(b)};j.nextTick="undefined"!==typeof setTimeout?function(b){setTimeout(b,
+4)}:function(b){b()};require||(require=j);j.version="2.1.8";j.jsExtRegExp=/^\/|:|\?|\.js$/;j.isBrowser=z;w=j.s={contexts:E,newContext:ha};j({});y(["toUrl","undef","defined","specified"],function(b){j[b]=function(){var c=E._;return c.require[b].apply(c,arguments)}});if(z&&(x=w.head=document.getElementsByTagName("head")[0],C=document.getElementsByTagName("base")[0]))x=w.head=C.parentNode;j.onError=aa;j.createNode=function(b){var c=b.xhtml?document.createElementNS("http://www.w3.org/1999/xhtml","html:script"):
+document.createElement("script");c.type=b.scriptType||"text/javascript";c.charset="utf-8";c.async=!0;return c};j.load=function(b,c,d){var h=b&&b.config||{};if(z)return h=j.createNode(h,c,d),h.setAttribute("data-requirecontext",b.contextName),h.setAttribute("data-requiremodule",c),h.attachEvent&&!(h.attachEvent.toString&&0>h.attachEvent.toString().indexOf("[native code"))&&!W?(O=!0,h.attachEvent("onreadystatechange",b.onScriptLoad)):(h.addEventListener("load",b.onScriptLoad,!1),h.addEventListener("error",
+b.onScriptError,!1)),h.src=d,K=h,C?x.insertBefore(h,C):x.appendChild(h),K=null,h;if(da)try{importScripts(d),b.completeLoad(c)}catch(l){b.onError(A("importscripts","importScripts failed for "+c+" at "+d,l,[c]))}};z&&M(document.getElementsByTagName("script"),function(b){x||(x=b.parentNode);if(J=b.getAttribute("data-main"))return q=J,t.baseUrl||(D=q.split("/"),q=D.pop(),fa=D.length?D.join("/")+"/":"./",t.baseUrl=fa),q=q.replace(ea,""),j.jsExtRegExp.test(q)&&(q=J),t.deps=t.deps?t.deps.concat(q):[q],!0});
+define=function(b,c,d){var h,j;"string"!==typeof b&&(d=c,c=b,b=null);I(c)||(d=c,c=null);!c&&H(d)&&(c=[],d.length&&(d.toString().replace(la,"").replace(ma,function(b,d){c.push(d)}),c=(1===d.length?["require"]:["require","exports","module"]).concat(c)));if(O){if(!(h=K))P&&"interactive"===P.readyState||M(document.getElementsByTagName("script"),function(b){if("interactive"===b.readyState)return P=b}),h=P;h&&(b||(b=h.getAttribute("data-requiremodule")),j=E[h.getAttribute("data-requirecontext")])}(j?j.defQueue:
+R).push([b,c,d])};define.amd={jQuery:!0};j.exec=function(b){return eval(b)};j(t)}})(this);
diff --git a/v3/js/togetherjs/togetherjs/libs/tinycolor.js b/v3/js/togetherjs/togetherjs/libs/tinycolor.js
new file mode 100644
index 000000000..c1f5991be
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/tinycolor.js
@@ -0,0 +1,869 @@
+// TinyColor v0.9.13
+// https://github.com/bgrins/TinyColor
+// 2012-11-28, Brian Grinstead, MIT License
+
+(function(root) {
+
+var trimLeft = /^[\s,#]+/,
+    trimRight = /\s+$/,
+    tinyCounter = 0,
+    math = Math,
+    mathRound = math.round,
+    mathMin = math.min,
+    mathMax = math.max,
+    mathRandom = math.random;
+
+function tinycolor (color, opts) {
+
+    color = (color) ? color : '';
+
+    // If input is already a tinycolor, return itself
+    if (typeof color == "object" && color.hasOwnProperty("_tc_id")) {
+       return color;
+    }
+
+    var rgb = inputToRGB(color);
+    var r = rgb.r,
+        g = rgb.g,
+        b = rgb.b,
+        a = rgb.a,
+        roundA = mathRound(100*a) / 100,
+        format = rgb.format;
+
+    // Don't let the range of [0,255] come back in [0,1].
+    // Potentially lose a little bit of precision here, but will fix issues where
+    // .5 gets interpreted as half of the total, instead of half of 1
+    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
+    if (r < 1) { r = mathRound(r); }
+    if (g < 1) { g = mathRound(g); }
+    if (b < 1) { b = mathRound(b); }
+
+    return {
+        ok: rgb.ok,
+        format: format,
+        _tc_id: tinyCounter++,
+        alpha: a,
+        toHsv: function() {
+            var hsv = rgbToHsv(r, g, b);
+            return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: a };
+        },
+        toHsvString: function() {
+            var hsv = rgbToHsv(r, g, b);
+            var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
+            return (a == 1) ?
+              "hsv("  + h + ", " + s + "%, " + v + "%)" :
+              "hsva(" + h + ", " + s + "%, " + v + "%, "+ roundA + ")";
+        },
+        toHsl: function() {
+            var hsl = rgbToHsl(r, g, b);
+            return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: a };
+        },
+        toHslString: function() {
+            var hsl = rgbToHsl(r, g, b);
+            var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
+            return (a == 1) ?
+              "hsl("  + h + ", " + s + "%, " + l + "%)" :
+              "hsla(" + h + ", " + s + "%, " + l + "%, "+ roundA + ")";
+        },
+        toHex: function() {
+            return rgbToHex(r, g, b);
+        },
+        toHexString: function() {
+            return '#' + rgbToHex(r, g, b);
+        },
+        toRgb: function() {
+            return { r: mathRound(r), g: mathRound(g), b: mathRound(b), a: a };
+        },
+        toRgbString: function() {
+            return (a == 1) ?
+              "rgb("  + mathRound(r) + ", " + mathRound(g) + ", " + mathRound(b) + ")" :
+              "rgba(" + mathRound(r) + ", " + mathRound(g) + ", " + mathRound(b) + ", " + roundA + ")";
+        },
+        toPercentageRgb: function() {
+            return { r: mathRound(bound01(r, 255) * 100) + "%", g: mathRound(bound01(g, 255) * 100) + "%", b: mathRound(bound01(b, 255) * 100) + "%", a: a };
+        },
+        toPercentageRgbString: function() {
+            return (a == 1) ?
+              "rgb("  + mathRound(bound01(r, 255) * 100) + "%, " + mathRound(bound01(g, 255) * 100) + "%, " + mathRound(bound01(b, 255) * 100) + "%)" :
+              "rgba(" + mathRound(bound01(r, 255) * 100) + "%, " + mathRound(bound01(g, 255) * 100) + "%, " + mathRound(bound01(b, 255) * 100) + "%, " + roundA + ")";
+        },
+        toName: function() {
+            return hexNames[rgbToHex(r, g, b)] || false;
+        },
+        toFilter: function() {
+            var hex = rgbToHex(r, g, b);
+            var secondHex = hex;
+            var alphaHex = Math.round(parseFloat(a) * 255).toString(16);
+            var secondAlphaHex = alphaHex;
+            var gradientType = opts && opts.gradientType ? "GradientType = 1, " : "";
+
+            if (secondColor) {
+                var s = tinycolor(secondColor);
+                secondHex = s.toHex();
+                secondAlphaHex = Math.round(parseFloat(s.alpha) * 255).toString(16);
+            }
+
+            return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr=#" + pad2(alphaHex) + hex + ",endColorstr=#" + pad2(secondAlphaHex) + secondHex + ")";
+        },
+        toString: function(format) {
+            format = format || this.format;
+            var formattedString = false;
+            if (format === "rgb") {
+                formattedString = this.toRgbString();
+            }
+            if (format === "prgb") {
+                formattedString = this.toPercentageRgbString();
+            }
+            if (format === "hex") {
+                formattedString = this.toHexString();
+            }
+            if (format === "name") {
+                formattedString = this.toName();
+            }
+            if (format === "hsl") {
+                formattedString = this.toHslString();
+            }
+            if (format === "hsv") {
+                formattedString = this.toHsvString();
+            }
+
+            return formattedString || this.toHexString();
+        }
+    };
+}
+
+// If input is an object, force 1 into "1.0" to handle ratios properly
+// String input requires "1.0" as input, so 1 will be treated as 1
+tinycolor.fromRatio = function(color) {
+    if (typeof color == "object") {
+        var newColor = {};
+        for (var i in color) {
+            newColor[i] = convertToPercentage(color[i]);
+        }
+        color = newColor;
+    }
+
+    return tinycolor(color);
+};
+
+// Given a string or object, convert that input to RGB
+// Possible string inputs:
+//
+//     "red"
+//     "#f00" or "f00"
+//     "#ff0000" or "ff0000"
+//     "rgb 255 0 0" or "rgb (255, 0, 0)"
+//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
+//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
+//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
+//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
+//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
+//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
+//
+function inputToRGB(color) {
+
+    var rgb = { r: 255, g: 255, b: 255 };
+    var a = 1;
+    var ok = false;
+    var format = false;
+
+    if (typeof color == "string") {
+        color = stringInputToObject(color);
+    }
+
+    if (typeof color == "object") {
+        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
+            rgb = rgbToRgb(color.r, color.g, color.b);
+            ok = true;
+            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+        }
+        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+            color.s = convertToPercentage(color.s);
+            color.v = convertToPercentage(color.v);
+            rgb = hsvToRgb(color.h, color.s, color.v);
+            ok = true;
+            format = "hsv";
+        }
+        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+            color.s = convertToPercentage(color.s);
+            color.l = convertToPercentage(color.l);
+            rgb = hslToRgb(color.h, color.s, color.l);
+            ok = true;
+            format = "hsl";
+        }
+
+        if (color.hasOwnProperty("a")) {
+            a = color.a;
+        }
+    }
+
+    a = parseFloat(a);
+
+    // Handle invalid alpha characters by setting to 1
+    if (isNaN(a) || a < 0 || a > 1) {
+        a = 1;
+    }
+
+    return {
+        ok: ok,
+        format: color.format || format,
+        r: mathMin(255, mathMax(rgb.r, 0)),
+        g: mathMin(255, mathMax(rgb.g, 0)),
+        b: mathMin(255, mathMax(rgb.b, 0)),
+        a: a
+    };
+}
+
+
+
+// Conversion Functions
+// --------------------
+
+// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
+// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
+
+// `rgbToRgb`
+// Handle bounds / percentage checking to conform to CSS color spec
+// <http://www.w3.org/TR/css3-color/>
+// *Assumes:* r, g, b in [0, 255] or [0, 1]
+// *Returns:* { r, g, b } in [0, 255]
+function rgbToRgb(r, g, b){
+    return {
+        r: bound01(r, 255) * 255,
+        g: bound01(g, 255) * 255,
+        b: bound01(b, 255) * 255
+    };
+}
+
+// `rgbToHsl`
+// Converts an RGB color value to HSL.
+// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
+// *Returns:* { h, s, l } in [0,1]
+function rgbToHsl(r, g, b) {
+
+    r = bound01(r, 255);
+    g = bound01(g, 255);
+    b = bound01(b, 255);
+
+    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+    var h, s, l = (max + min) / 2;
+
+    if(max == min) {
+        h = s = 0; // achromatic
+    }
+    else {
+        var d = max - min;
+        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+        switch(max) {
+            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+            case g: h = (b - r) / d + 2; break;
+            case b: h = (r - g) / d + 4; break;
+        }
+
+        h /= 6;
+    }
+
+    return { h: h, s: s, l: l };
+}
+
+// `hslToRgb`
+// Converts an HSL color value to RGB.
+// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
+// *Returns:* { r, g, b } in the set [0, 255]
+function hslToRgb(h, s, l) {
+    var r, g, b;
+
+    h = bound01(h, 360);
+    s = bound01(s, 100);
+    l = bound01(l, 100);
+
+    function hue2rgb(p, q, t) {
+        if(t < 0) t += 1;
+        if(t > 1) t -= 1;
+        if(t < 1/6) return p + (q - p) * 6 * t;
+        if(t < 1/2) return q;
+        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+        return p;
+    }
+
+    if(s === 0) {
+        r = g = b = l; // achromatic
+    }
+    else {
+        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+        var p = 2 * l - q;
+        r = hue2rgb(p, q, h + 1/3);
+        g = hue2rgb(p, q, h);
+        b = hue2rgb(p, q, h - 1/3);
+    }
+
+    return { r: r * 255, g: g * 255, b: b * 255 };
+}
+
+// `rgbToHsv`
+// Converts an RGB color value to HSV
+// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
+// *Returns:* { h, s, v } in [0,1]
+function rgbToHsv(r, g, b) {
+
+    r = bound01(r, 255);
+    g = bound01(g, 255);
+    b = bound01(b, 255);
+
+    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+    var h, s, v = max;
+
+    var d = max - min;
+    s = max === 0 ? 0 : d / max;
+
+    if(max == min) {
+        h = 0; // achromatic
+    }
+    else {
+        switch(max) {
+            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+            case g: h = (b - r) / d + 2; break;
+            case b: h = (r - g) / d + 4; break;
+        }
+        h /= 6;
+    }
+    return { h: h, s: s, v: v };
+}
+
+// `hsvToRgb`
+// Converts an HSV color value to RGB.
+// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
+// *Returns:* { r, g, b } in the set [0, 255]
+ function hsvToRgb(h, s, v) {
+
+    h = bound01(h, 360) * 6;
+    s = bound01(s, 100);
+    v = bound01(v, 100);
+
+    var i = math.floor(h),
+        f = h - i,
+        p = v * (1 - s),
+        q = v * (1 - f * s),
+        t = v * (1 - (1 - f) * s),
+        mod = i % 6,
+        r = [v, q, p, p, t, v][mod],
+        g = [t, v, v, q, p, p][mod],
+        b = [p, p, t, v, v, q][mod];
+
+    return { r: r * 255, g: g * 255, b: b * 255 };
+}
+
+// `rgbToHex`
+// Converts an RGB color to hex
+// Assumes r, g, and b are contained in the set [0, 255]
+// Returns a 3 or 6 character hex
+function rgbToHex(r, g, b) {
+    var hex = [
+        pad2(mathRound(r).toString(16)),
+        pad2(mathRound(g).toString(16)),
+        pad2(mathRound(b).toString(16))
+    ];
+
+    // Return a 3 character hex if possible
+    if (hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
+        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
+    }
+
+    return hex.join("");
+}
+
+// `equals`
+// Can be called with any tinycolor input
+tinycolor.equals = function (color1, color2) {
+    if (!color1 || !color2) { return false; }
+    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
+};
+tinycolor.random = function() {
+    return tinycolor.fromRatio({
+        r: mathRandom(),
+        g: mathRandom(),
+        b: mathRandom()
+    });
+};
+
+
+// Modification Functions
+// ----------------------
+// Thanks to less.js for some of the basics here
+// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
+
+
+tinycolor.desaturate = function (color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.s -= ((amount || 10) / 100);
+    hsl.s = clamp01(hsl.s);
+    return tinycolor(hsl);
+};
+tinycolor.saturate = function (color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.s += ((amount || 10) / 100);
+    hsl.s = clamp01(hsl.s);
+    return tinycolor(hsl);
+};
+tinycolor.greyscale = function(color) {
+    return tinycolor.desaturate(color, 100);
+};
+tinycolor.lighten = function(color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.l += ((amount || 10) / 100);
+    hsl.l = clamp01(hsl.l);
+    return tinycolor(hsl);
+};
+tinycolor.darken = function (color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.l -= ((amount || 10) / 100);
+    hsl.l = clamp01(hsl.l);
+    return tinycolor(hsl);
+};
+tinycolor.complement = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.h = (hsl.h + 180) % 360;
+    return tinycolor(hsl);
+};
+
+
+// Combination Functions
+// ---------------------
+// Thanks to jQuery xColor for some of the ideas behind these
+// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
+
+tinycolor.triad = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    var h = hsl.h;
+    return [
+        tinycolor(color),
+        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
+        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
+    ];
+};
+tinycolor.tetrad = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    var h = hsl.h;
+    return [
+        tinycolor(color),
+        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
+        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
+        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
+    ];
+};
+tinycolor.splitcomplement = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    var h = hsl.h;
+    return [
+        tinycolor(color),
+        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
+        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
+    ];
+};
+tinycolor.analogous = function(color, results, slices) {
+    results = results || 6;
+    slices = slices || 30;
+
+    var hsl = tinycolor(color).toHsl();
+    var part = 360 / slices;
+    var ret = [tinycolor(color)];
+
+    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
+        hsl.h = (hsl.h + part) % 360;
+        ret.push(tinycolor(hsl));
+    }
+    return ret;
+};
+tinycolor.monochromatic = function(color, results) {
+    results = results || 6;
+    var hsv = tinycolor(color).toHsv();
+    var h = hsv.h, s = hsv.s, v = hsv.v;
+    var ret = [];
+    var modification = 1 / results;
+
+    while (results--) {
+        ret.push(tinycolor({ h: h, s: s, v: v}));
+        v = (v + modification) % 1;
+    }
+
+    return ret;
+};
+// Readability based on W3C recommendations: http://www.w3.org/TR/AERT#color-contrast
+// Returns object with two properties:
+//   .brightness: the difference in brightness between the two colors
+//   .color: the difference in color/hue between the two colors
+// An "acceptable" color is considered to have a brightness difference of 125 and a
+// color difference of 500
+tinycolor.readability = function(color1, color2) {
+    var a = tinycolor(color1).toRgb(), b = tinycolor(color2).toRgb();
+    var brightnessA = (a.r * 299 + a.g * 587 + a.b * 114) / 1000;
+    var brightnessB = (b.r * 299 + b.g * 587 + b.b * 114) / 1000;
+    var colorDiff = (
+        Math.max(a.r, b.r) - Math.min(a.r, b.r) +
+        Math.max(a.g, b.g) - Math.min(a.g, b.g) +
+        Math.max(a.b, b.b) - Math.min(a.b, b.b));
+    return {
+        brightness: Math.abs(brightnessA - brightnessB),
+        color: colorDiff
+    };
+};
+// True if using color1 over color2 (or vice versa) is "readable"
+// Based on: http://www.w3.org/TR/AERT#color-contrast
+// Example:
+//   tinycolor.readable("#000", "#111") => false
+tinycolor.readable = function(color1, color2) {
+    var readability = tinycolor.readability(color1, color2);
+    return readability.brightness > 125 && readability.color > 500;
+};
+// Given a base color and a list of possible foreground or background
+// colors for that base, returns the most readable color.
+// Example:
+//   tinycolor.mostReadable("#123", ["#fff", "#000"]) => "#000"
+tinycolor.mostReadable = function(baseColor, colorList) {
+    var bestColor;
+    var bestScore = 0;
+    var bestIsReadable = false;
+    for (var i=0; i < colorList.length; i++) {
+        var readability = tinycolor.readability(baseColor, colorList[i]);
+        var readable = readability.brightness > 125 && readability.color > 500;
+        // We normalize both around the "acceptable" breaking point,
+        // but rank brightness constrast higher than hue.  Why?  I'm
+        // not sure, seems reasonable.
+        var score = 3 * (readability.brightness / 125) + (readability.color / 500);
+        if ((readable && ! bestIsReadable) ||
+            (readable && bestIsReadable && score > bestScore) ||
+            ((! readable) && (! bestIsReadable) && score > bestScore)) {
+            bestIsReadable = readable;
+            bestScore = score;
+            bestColor = colorList[i];
+        }
+    }
+    return bestColor;
+};
+
+
+// Big List of Colors
+// ---------
+// <http://www.w3.org/TR/css3-color/#svg-color>
+var names = tinycolor.names = {
+    aliceblue: "f0f8ff",
+    antiquewhite: "faebd7",
+    aqua: "0ff",
+    aquamarine: "7fffd4",
+    azure: "f0ffff",
+    beige: "f5f5dc",
+    bisque: "ffe4c4",
+    black: "000",
+    blanchedalmond: "ffebcd",
+    blue: "00f",
+    blueviolet: "8a2be2",
+    brown: "a52a2a",
+    burlywood: "deb887",
+    burntsienna: "ea7e5d",
+    cadetblue: "5f9ea0",
+    chartreuse: "7fff00",
+    chocolate: "d2691e",
+    coral: "ff7f50",
+    cornflowerblue: "6495ed",
+    cornsilk: "fff8dc",
+    crimson: "dc143c",
+    cyan: "0ff",
+    darkblue: "00008b",
+    darkcyan: "008b8b",
+    darkgoldenrod: "b8860b",
+    darkgray: "a9a9a9",
+    darkgreen: "006400",
+    darkgrey: "a9a9a9",
+    darkkhaki: "bdb76b",
+    darkmagenta: "8b008b",
+    darkolivegreen: "556b2f",
+    darkorange: "ff8c00",
+    darkorchid: "9932cc",
+    darkred: "8b0000",
+    darksalmon: "e9967a",
+    darkseagreen: "8fbc8f",
+    darkslateblue: "483d8b",
+    darkslategray: "2f4f4f",
+    darkslategrey: "2f4f4f",
+    darkturquoise: "00ced1",
+    darkviolet: "9400d3",
+    deeppink: "ff1493",
+    deepskyblue: "00bfff",
+    dimgray: "696969",
+    dimgrey: "696969",
+    dodgerblue: "1e90ff",
+    firebrick: "b22222",
+    floralwhite: "fffaf0",
+    forestgreen: "228b22",
+    fuchsia: "f0f",
+    gainsboro: "dcdcdc",
+    ghostwhite: "f8f8ff",
+    gold: "ffd700",
+    goldenrod: "daa520",
+    gray: "808080",
+    green: "008000",
+    greenyellow: "adff2f",
+    grey: "808080",
+    honeydew: "f0fff0",
+    hotpink: "ff69b4",
+    indianred: "cd5c5c",
+    indigo: "4b0082",
+    ivory: "fffff0",
+    khaki: "f0e68c",
+    lavender: "e6e6fa",
+    lavenderblush: "fff0f5",
+    lawngreen: "7cfc00",
+    lemonchiffon: "fffacd",
+    lightblue: "add8e6",
+    lightcoral: "f08080",
+    lightcyan: "e0ffff",
+    lightgoldenrodyellow: "fafad2",
+    lightgray: "d3d3d3",
+    lightgreen: "90ee90",
+    lightgrey: "d3d3d3",
+    lightpink: "ffb6c1",
+    lightsalmon: "ffa07a",
+    lightseagreen: "20b2aa",
+    lightskyblue: "87cefa",
+    lightslategray: "789",
+    lightslategrey: "789",
+    lightsteelblue: "b0c4de",
+    lightyellow: "ffffe0",
+    lime: "0f0",
+    limegreen: "32cd32",
+    linen: "faf0e6",
+    magenta: "f0f",
+    maroon: "800000",
+    mediumaquamarine: "66cdaa",
+    mediumblue: "0000cd",
+    mediumorchid: "ba55d3",
+    mediumpurple: "9370db",
+    mediumseagreen: "3cb371",
+    mediumslateblue: "7b68ee",
+    mediumspringgreen: "00fa9a",
+    mediumturquoise: "48d1cc",
+    mediumvioletred: "c71585",
+    midnightblue: "191970",
+    mintcream: "f5fffa",
+    mistyrose: "ffe4e1",
+    moccasin: "ffe4b5",
+    navajowhite: "ffdead",
+    navy: "000080",
+    oldlace: "fdf5e6",
+    olive: "808000",
+    olivedrab: "6b8e23",
+    orange: "ffa500",
+    orangered: "ff4500",
+    orchid: "da70d6",
+    palegoldenrod: "eee8aa",
+    palegreen: "98fb98",
+    paleturquoise: "afeeee",
+    palevioletred: "db7093",
+    papayawhip: "ffefd5",
+    peachpuff: "ffdab9",
+    peru: "cd853f",
+    pink: "ffc0cb",
+    plum: "dda0dd",
+    powderblue: "b0e0e6",
+    purple: "800080",
+    red: "f00",
+    rosybrown: "bc8f8f",
+    royalblue: "4169e1",
+    saddlebrown: "8b4513",
+    salmon: "fa8072",
+    sandybrown: "f4a460",
+    seagreen: "2e8b57",
+    seashell: "fff5ee",
+    sienna: "a0522d",
+    silver: "c0c0c0",
+    skyblue: "87ceeb",
+    slateblue: "6a5acd",
+    slategray: "708090",
+    slategrey: "708090",
+    snow: "fffafa",
+    springgreen: "00ff7f",
+    steelblue: "4682b4",
+    tan: "d2b48c",
+    teal: "008080",
+    thistle: "d8bfd8",
+    tomato: "ff6347",
+    turquoise: "40e0d0",
+    violet: "ee82ee",
+    wheat: "f5deb3",
+    white: "fff",
+    whitesmoke: "f5f5f5",
+    yellow: "ff0",
+    yellowgreen: "9acd32"
+};
+
+// Make it easy to access colors via `hexNames[hex]`
+var hexNames = tinycolor.hexNames = flip(names);
+
+
+// Utilities
+// ---------
+
+// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
+function flip(o) {
+    var flipped = { };
+    for (var i in o) {
+        if (o.hasOwnProperty(i)) {
+            flipped[o[i]] = i;
+        }
+    }
+    return flipped;
+}
+
+// Take input from [0, n] and return it as [0, 1]
+function bound01(n, max) {
+    if (isOnePointZero(n)) { n = "100%"; }
+
+    var processPercent = isPercentage(n);
+    n = mathMin(max, mathMax(0, parseFloat(n)));
+
+    // Automatically convert percentage into number
+    if (processPercent) {
+        n = parseInt(n * max, 10) / 100;
+    }
+
+    // Handle floating point rounding errors
+    if ((math.abs(n - max) < 0.000001)) {
+        return 1;
+    }
+
+    // Convert into [0, 1] range if it isn't already
+    return (n % max) / parseFloat(max);
+}
+
+// Force a number between 0 and 1
+function clamp01(val) {
+    return mathMin(1, mathMax(0, val));
+}
+
+// Parse an integer into hex
+function parseHex(val) {
+    return parseInt(val, 16);
+}
+
+// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
+// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
+function isOnePointZero(n) {
+    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
+}
+
+// Check to see if string passed in is a percentage
+function isPercentage(n) {
+    return typeof n === "string" && n.indexOf('%') != -1;
+}
+
+// Force a hex value to have 2 characters
+function pad2(c) {
+    return c.length == 1 ? '0' + c : '' + c;
+}
+
+// Replace a decimal with it's percentage value
+function convertToPercentage(n) {
+    if (n <= 1) {
+        n = (n * 100) + "%";
+    }
+
+    return n;
+}
+
+var matchers = (function() {
+
+    // <http://www.w3.org/TR/css3-values/#integers>
+    var CSS_INTEGER = "[-\\+]?\\d+%?";
+
+    // <http://www.w3.org/TR/css3-values/#number-value>
+    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
+
+    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
+    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
+
+    // Actual matching.
+    // Parentheses and commas are optional, but not required.
+    // Whitespace can take the place of commas or opening paren
+    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+
+    return {
+        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
+        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
+        hex3: /^([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+        hex6: /^([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+    };
+})();
+
+// `stringInputToObject`
+// Permissive string parsing.  Take in a number of formats, and output an object
+// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+function stringInputToObject(color) {
+
+    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
+    var named = false;
+    if (names[color]) {
+        color = names[color];
+        named = true;
+    }
+    else if (color == 'transparent') {
+        return { r: 0, g: 0, b: 0, a: 0 };
+    }
+
+    // Try to match string input using regular expressions.
+    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
+    // Just return an object and let the conversion functions handle that.
+    // This way the result will be the same whether the tinycolor is initialized with string or object.
+    var match;
+    if ((match = matchers.rgb.exec(color))) {
+        return { r: match[1], g: match[2], b: match[3] };
+    }
+    if ((match = matchers.rgba.exec(color))) {
+        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+    }
+    if ((match = matchers.hsl.exec(color))) {
+        return { h: match[1], s: match[2], l: match[3] };
+    }
+    if ((match = matchers.hsla.exec(color))) {
+        return { h: match[1], s: match[2], l: match[3], a: match[4] };
+    }
+    if ((match = matchers.hsv.exec(color))) {
+        return { h: match[1], s: match[2], v: match[3] };
+    }
+    if ((match = matchers.hex6.exec(color))) {
+        return {
+            r: parseHex(match[1]),
+            g: parseHex(match[2]),
+            b: parseHex(match[3]),
+            format: named ? "name" : "hex"
+        };
+    }
+    if ((match = matchers.hex3.exec(color))) {
+        return {
+            r: parseHex(match[1] + '' + match[1]),
+            g: parseHex(match[2] + '' + match[2]),
+            b: parseHex(match[3] + '' + match[3]),
+            format: named ? "name" : "hex"
+        };
+    }
+
+    return false;
+}
+
+// Node: Export function
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = tinycolor;
+}
+// AMD/requirejs: Define the module
+else if (typeof define !== "undefined") {
+    define(function () {return tinycolor;});
+}
+// Browser: Expose to window
+else {
+    root.tinycolor = tinycolor;
+}
+
+})(this);
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/index.html b/v3/js/togetherjs/togetherjs/libs/walkabout/index.html
new file mode 100644
index 000000000..03a50844c
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/index.html
@@ -0,0 +1,52 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>walkabout.js: automated randomized Javascript frontend testing</title>
+    <script src="walkabout.js"></script>
+    <script>
+
+window.addEventListener("load", function () {
+  document.getElementById("bookmarklet").href = Walkabout.makeBookmarklet();
+}, false);
+
+    </script>
+    <style>
+
+body {
+  font-family: sans-serif;
+}
+
+#page {
+  max-width: 40em;
+  position: absolute;
+  left: 50%;
+  margin-left: -20em;
+}
+
+    </style>
+  </head>
+  <body>
+
+    <div id="page">
+
+    <h1>Walkabout.js</h1>
+
+    <p>walkabout.js is a library to do automated randomized Javascript
+    testing (you might consider it "fuzz" testing).  It figures out
+    what the application is listening for the user to do, and does
+    things randomly.</p>
+
+    <p>For more information
+    see <a href="http://github.com/ianb/walkabout.js">the github
+    page</a>. </p>
+
+    <p>There is a bookmarklet for use with jQuery apps:</p>
+
+    <p style="text-align: center">
+      <a id="bookmarklet" style="font-size: 200%; border: 2px solid #000; border-radius: 3px; padding: 0.3em;" href="">walkabout</a>
+    </p>
+
+    </div>
+
+  </body>
+</html>
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/lib/esprima.js b/v3/js/togetherjs/togetherjs/libs/walkabout/lib/esprima.js
new file mode 100644
index 000000000..90d1b14bb
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/lib/esprima.js
@@ -0,0 +1,3808 @@
+/*
+  Copyright (C) 2012 Ariya Hidayat <ariya.hidayat@gmail.com>
+  Copyright (C) 2012 Mathias Bynens <mathias@qiwi.be>
+  Copyright (C) 2012 Joost-Wim Boekesteijn <joost-wim@boekesteijn.nl>
+  Copyright (C) 2012 Kris Kowal <kris.kowal@cixar.com>
+  Copyright (C) 2012 Yusuke Suzuki <utatane.tea@gmail.com>
+  Copyright (C) 2012 Arpad Borsos <arpad.borsos@googlemail.com>
+  Copyright (C) 2011 Ariya Hidayat <ariya.hidayat@gmail.com>
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
+  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+/*jslint bitwise:true plusplus:true */
+/*global esprima:true, define:true, exports:true, window: true,
+throwError: true, createLiteral: true, generateStatement: true,
+parseAssignmentExpression: true, parseBlock: true, parseExpression: true,
+parseFunctionDeclaration: true, parseFunctionExpression: true,
+parseFunctionSourceElements: true, parseVariableIdentifier: true,
+parseLeftHandSideExpression: true,
+parseStatement: true, parseSourceElement: true */
+
+(function (factory) {
+    'use strict';
+
+    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js,
+    // and plain browser loading,
+    if (typeof define === 'function' && define.amd) {
+        define(['exports'], factory);
+    } else if (typeof exports !== 'undefined') {
+        factory(exports);
+    } else {
+        factory((window.esprima = {}));
+    }
+}(function (exports) {
+    'use strict';
+
+    var Token,
+        TokenName,
+        Syntax,
+        PropertyKind,
+        Messages,
+        Regex,
+        source,
+        strict,
+        index,
+        lineNumber,
+        lineStart,
+        length,
+        buffer,
+        state,
+        extra;
+
+    Token = {
+        BooleanLiteral: 1,
+        EOF: 2,
+        Identifier: 3,
+        Keyword: 4,
+        NullLiteral: 5,
+        NumericLiteral: 6,
+        Punctuator: 7,
+        StringLiteral: 8
+    };
+
+    TokenName = {};
+    TokenName[Token.BooleanLiteral] = 'Boolean';
+    TokenName[Token.EOF] = '<end>';
+    TokenName[Token.Identifier] = 'Identifier';
+    TokenName[Token.Keyword] = 'Keyword';
+    TokenName[Token.NullLiteral] = 'Null';
+    TokenName[Token.NumericLiteral] = 'Numeric';
+    TokenName[Token.Punctuator] = 'Punctuator';
+    TokenName[Token.StringLiteral] = 'String';
+
+    Syntax = {
+        AssignmentExpression: 'AssignmentExpression',
+        ArrayExpression: 'ArrayExpression',
+        BlockStatement: 'BlockStatement',
+        BinaryExpression: 'BinaryExpression',
+        BreakStatement: 'BreakStatement',
+        CallExpression: 'CallExpression',
+        CatchClause: 'CatchClause',
+        ConditionalExpression: 'ConditionalExpression',
+        ContinueStatement: 'ContinueStatement',
+        DoWhileStatement: 'DoWhileStatement',
+        DebuggerStatement: 'DebuggerStatement',
+        EmptyStatement: 'EmptyStatement',
+        ExpressionStatement: 'ExpressionStatement',
+        ForStatement: 'ForStatement',
+        ForInStatement: 'ForInStatement',
+        FunctionDeclaration: 'FunctionDeclaration',
+        FunctionExpression: 'FunctionExpression',
+        Identifier: 'Identifier',
+        IfStatement: 'IfStatement',
+        Literal: 'Literal',
+        LabeledStatement: 'LabeledStatement',
+        LogicalExpression: 'LogicalExpression',
+        MemberExpression: 'MemberExpression',
+        NewExpression: 'NewExpression',
+        ObjectExpression: 'ObjectExpression',
+        Program: 'Program',
+        Property: 'Property',
+        ReturnStatement: 'ReturnStatement',
+        SequenceExpression: 'SequenceExpression',
+        SwitchStatement: 'SwitchStatement',
+        SwitchCase: 'SwitchCase',
+        ThisExpression: 'ThisExpression',
+        ThrowStatement: 'ThrowStatement',
+        TryStatement: 'TryStatement',
+        UnaryExpression: 'UnaryExpression',
+        UpdateExpression: 'UpdateExpression',
+        VariableDeclaration: 'VariableDeclaration',
+        VariableDeclarator: 'VariableDeclarator',
+        WhileStatement: 'WhileStatement',
+        WithStatement: 'WithStatement'
+    };
+
+    PropertyKind = {
+        Data: 1,
+        Get: 2,
+        Set: 4
+    };
+
+    // Error messages should be identical to V8.
+    Messages = {
+        UnexpectedToken:  'Unexpected token %0',
+        UnexpectedNumber:  'Unexpected number',
+        UnexpectedString:  'Unexpected string',
+        UnexpectedIdentifier:  'Unexpected identifier',
+        UnexpectedReserved:  'Unexpected reserved word',
+        UnexpectedEOS:  'Unexpected end of input',
+        NewlineAfterThrow:  'Illegal newline after throw',
+        InvalidRegExp: 'Invalid regular expression',
+        UnterminatedRegExp:  'Invalid regular expression: missing /',
+        InvalidLHSInAssignment:  'Invalid left-hand side in assignment',
+        InvalidLHSInForIn:  'Invalid left-hand side in for-in',
+        MultipleDefaultsInSwitch: 'More than one default clause in switch statement',
+        NoCatchOrFinally:  'Missing catch or finally after try',
+        UnknownLabel: 'Undefined label \'%0\'',
+        Redeclaration: '%0 \'%1\' has already been declared',
+        IllegalContinue: 'Illegal continue statement',
+        IllegalBreak: 'Illegal break statement',
+        IllegalReturn: 'Illegal return statement',
+        StrictModeWith:  'Strict mode code may not include a with statement',
+        StrictCatchVariable:  'Catch variable may not be eval or arguments in strict mode',
+        StrictVarName:  'Variable name may not be eval or arguments in strict mode',
+        StrictParamName:  'Parameter name eval or arguments is not allowed in strict mode',
+        StrictParamDupe: 'Strict mode function may not have duplicate parameter names',
+        StrictFunctionName:  'Function name may not be eval or arguments in strict mode',
+        StrictOctalLiteral:  'Octal literals are not allowed in strict mode.',
+        StrictDelete:  'Delete of an unqualified identifier in strict mode.',
+        StrictDuplicateProperty:  'Duplicate data property in object literal not allowed in strict mode',
+        AccessorDataProperty:  'Object literal may not have data and accessor property with the same name',
+        AccessorGetSet:  'Object literal may not have multiple get/set accessors with the same name',
+        StrictLHSAssignment:  'Assignment to eval or arguments is not allowed in strict mode',
+        StrictLHSPostfix:  'Postfix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictLHSPrefix:  'Prefix increment/decrement may not have eval or arguments operand in strict mode',
+        StrictReservedWord:  'Use of future reserved word in strict mode'
+    };
+
+    // See also tools/generate-unicode-regex.py.
+    Regex = {
+        NonAsciiIdentifierStart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0370-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u05d0-\u05ea\u05f0-\u05f2\u0620-\u064a\u066e\u066f\u0671-\u06d3\u06d5\u06e5\u06e6\u06ee\u06ef\u06fa-\u06fc\u06ff\u0710\u0712-\u072f\u074d-\u07a5\u07b1\u07ca-\u07ea\u07f4\u07f5\u07fa\u0800-\u0815\u081a\u0824\u0828\u0840-\u0858\u08a0\u08a2-\u08ac\u0904-\u0939\u093d\u0950\u0958-\u0961\u0971-\u0977\u0979-\u097f\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bd\u09ce\u09dc\u09dd\u09df-\u09e1\u09f0\u09f1\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a59-\u0a5c\u0a5e\u0a72-\u0a74\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abd\u0ad0\u0ae0\u0ae1\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3d\u0b5c\u0b5d\u0b5f-\u0b61\u0b71\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bd0\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d\u0c58\u0c59\u0c60\u0c61\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbd\u0cde\u0ce0\u0ce1\u0cf1\u0cf2\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d\u0d4e\u0d60\u0d61\u0d7a-\u0d7f\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0e01-\u0e30\u0e32\u0e33\u0e40-\u0e46\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb0\u0eb2\u0eb3\u0ebd\u0ec0-\u0ec4\u0ec6\u0edc-\u0edf\u0f00\u0f40-\u0f47\u0f49-\u0f6c\u0f88-\u0f8c\u1000-\u102a\u103f\u1050-\u1055\u105a-\u105d\u1061\u1065\u1066\u106e-\u1070\u1075-\u1081\u108e\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1711\u1720-\u1731\u1740-\u1751\u1760-\u176c\u176e-\u1770\u1780-\u17b3\u17d7\u17dc\u1820-\u1877\u1880-\u18a8\u18aa\u18b0-\u18f5\u1900-\u191c\u1950-\u196d\u1970-\u1974\u1980-\u19ab\u19c1-\u19c7\u1a00-\u1a16\u1a20-\u1a54\u1aa7\u1b05-\u1b33\u1b45-\u1b4b\u1b83-\u1ba0\u1bae\u1baf\u1bba-\u1be5\u1c00-\u1c23\u1c4d-\u1c4f\u1c5a-\u1c7d\u1ce9-\u1cec\u1cee-\u1cf1\u1cf5\u1cf6\u1d00-\u1dbf\u1e00-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u2071\u207f\u2090-\u209c\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cee\u2cf2\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d80-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2e2f\u3005-\u3007\u3021-\u3029\u3031-\u3035\u3038-\u303c\u3041-\u3096\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua61f\ua62a\ua62b\ua640-\ua66e\ua67f-\ua697\ua6a0-\ua6ef\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua801\ua803-\ua805\ua807-\ua80a\ua80c-\ua822\ua840-\ua873\ua882-\ua8b3\ua8f2-\ua8f7\ua8fb\ua90a-\ua925\ua930-\ua946\ua960-\ua97c\ua984-\ua9b2\ua9cf\uaa00-\uaa28\uaa40-\uaa42\uaa44-\uaa4b\uaa60-\uaa76\uaa7a\uaa80-\uaaaf\uaab1\uaab5\uaab6\uaab9-\uaabd\uaac0\uaac2\uaadb-\uaadd\uaae0-\uaaea\uaaf2-\uaaf4\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabe2\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d\ufb1f-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe70-\ufe74\ufe76-\ufefc\uff21-\uff3a\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]'),
+        NonAsciiIdentifierPart: new RegExp('[\xaa\xb5\xba\xc0-\xd6\xd8-\xf6\xf8-\u02c1\u02c6-\u02d1\u02e0-\u02e4\u02ec\u02ee\u0300-\u0374\u0376\u0377\u037a-\u037d\u0386\u0388-\u038a\u038c\u038e-\u03a1\u03a3-\u03f5\u03f7-\u0481\u0483-\u0487\u048a-\u0527\u0531-\u0556\u0559\u0561-\u0587\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u05d0-\u05ea\u05f0-\u05f2\u0610-\u061a\u0620-\u0669\u066e-\u06d3\u06d5-\u06dc\u06df-\u06e8\u06ea-\u06fc\u06ff\u0710-\u074a\u074d-\u07b1\u07c0-\u07f5\u07fa\u0800-\u082d\u0840-\u085b\u08a0\u08a2-\u08ac\u08e4-\u08fe\u0900-\u0963\u0966-\u096f\u0971-\u0977\u0979-\u097f\u0981-\u0983\u0985-\u098c\u098f\u0990\u0993-\u09a8\u09aa-\u09b0\u09b2\u09b6-\u09b9\u09bc-\u09c4\u09c7\u09c8\u09cb-\u09ce\u09d7\u09dc\u09dd\u09df-\u09e3\u09e6-\u09f1\u0a01-\u0a03\u0a05-\u0a0a\u0a0f\u0a10\u0a13-\u0a28\u0a2a-\u0a30\u0a32\u0a33\u0a35\u0a36\u0a38\u0a39\u0a3c\u0a3e-\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a59-\u0a5c\u0a5e\u0a66-\u0a75\u0a81-\u0a83\u0a85-\u0a8d\u0a8f-\u0a91\u0a93-\u0aa8\u0aaa-\u0ab0\u0ab2\u0ab3\u0ab5-\u0ab9\u0abc-\u0ac5\u0ac7-\u0ac9\u0acb-\u0acd\u0ad0\u0ae0-\u0ae3\u0ae6-\u0aef\u0b01-\u0b03\u0b05-\u0b0c\u0b0f\u0b10\u0b13-\u0b28\u0b2a-\u0b30\u0b32\u0b33\u0b35-\u0b39\u0b3c-\u0b44\u0b47\u0b48\u0b4b-\u0b4d\u0b56\u0b57\u0b5c\u0b5d\u0b5f-\u0b63\u0b66-\u0b6f\u0b71\u0b82\u0b83\u0b85-\u0b8a\u0b8e-\u0b90\u0b92-\u0b95\u0b99\u0b9a\u0b9c\u0b9e\u0b9f\u0ba3\u0ba4\u0ba8-\u0baa\u0bae-\u0bb9\u0bbe-\u0bc2\u0bc6-\u0bc8\u0bca-\u0bcd\u0bd0\u0bd7\u0be6-\u0bef\u0c01-\u0c03\u0c05-\u0c0c\u0c0e-\u0c10\u0c12-\u0c28\u0c2a-\u0c33\u0c35-\u0c39\u0c3d-\u0c44\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c58\u0c59\u0c60-\u0c63\u0c66-\u0c6f\u0c82\u0c83\u0c85-\u0c8c\u0c8e-\u0c90\u0c92-\u0ca8\u0caa-\u0cb3\u0cb5-\u0cb9\u0cbc-\u0cc4\u0cc6-\u0cc8\u0cca-\u0ccd\u0cd5\u0cd6\u0cde\u0ce0-\u0ce3\u0ce6-\u0cef\u0cf1\u0cf2\u0d02\u0d03\u0d05-\u0d0c\u0d0e-\u0d10\u0d12-\u0d3a\u0d3d-\u0d44\u0d46-\u0d48\u0d4a-\u0d4e\u0d57\u0d60-\u0d63\u0d66-\u0d6f\u0d7a-\u0d7f\u0d82\u0d83\u0d85-\u0d96\u0d9a-\u0db1\u0db3-\u0dbb\u0dbd\u0dc0-\u0dc6\u0dca\u0dcf-\u0dd4\u0dd6\u0dd8-\u0ddf\u0df2\u0df3\u0e01-\u0e3a\u0e40-\u0e4e\u0e50-\u0e59\u0e81\u0e82\u0e84\u0e87\u0e88\u0e8a\u0e8d\u0e94-\u0e97\u0e99-\u0e9f\u0ea1-\u0ea3\u0ea5\u0ea7\u0eaa\u0eab\u0ead-\u0eb9\u0ebb-\u0ebd\u0ec0-\u0ec4\u0ec6\u0ec8-\u0ecd\u0ed0-\u0ed9\u0edc-\u0edf\u0f00\u0f18\u0f19\u0f20-\u0f29\u0f35\u0f37\u0f39\u0f3e-\u0f47\u0f49-\u0f6c\u0f71-\u0f84\u0f86-\u0f97\u0f99-\u0fbc\u0fc6\u1000-\u1049\u1050-\u109d\u10a0-\u10c5\u10c7\u10cd\u10d0-\u10fa\u10fc-\u1248\u124a-\u124d\u1250-\u1256\u1258\u125a-\u125d\u1260-\u1288\u128a-\u128d\u1290-\u12b0\u12b2-\u12b5\u12b8-\u12be\u12c0\u12c2-\u12c5\u12c8-\u12d6\u12d8-\u1310\u1312-\u1315\u1318-\u135a\u135d-\u135f\u1380-\u138f\u13a0-\u13f4\u1401-\u166c\u166f-\u167f\u1681-\u169a\u16a0-\u16ea\u16ee-\u16f0\u1700-\u170c\u170e-\u1714\u1720-\u1734\u1740-\u1753\u1760-\u176c\u176e-\u1770\u1772\u1773\u1780-\u17d3\u17d7\u17dc\u17dd\u17e0-\u17e9\u180b-\u180d\u1810-\u1819\u1820-\u1877\u1880-\u18aa\u18b0-\u18f5\u1900-\u191c\u1920-\u192b\u1930-\u193b\u1946-\u196d\u1970-\u1974\u1980-\u19ab\u19b0-\u19c9\u19d0-\u19d9\u1a00-\u1a1b\u1a20-\u1a5e\u1a60-\u1a7c\u1a7f-\u1a89\u1a90-\u1a99\u1aa7\u1b00-\u1b4b\u1b50-\u1b59\u1b6b-\u1b73\u1b80-\u1bf3\u1c00-\u1c37\u1c40-\u1c49\u1c4d-\u1c7d\u1cd0-\u1cd2\u1cd4-\u1cf6\u1d00-\u1de6\u1dfc-\u1f15\u1f18-\u1f1d\u1f20-\u1f45\u1f48-\u1f4d\u1f50-\u1f57\u1f59\u1f5b\u1f5d\u1f5f-\u1f7d\u1f80-\u1fb4\u1fb6-\u1fbc\u1fbe\u1fc2-\u1fc4\u1fc6-\u1fcc\u1fd0-\u1fd3\u1fd6-\u1fdb\u1fe0-\u1fec\u1ff2-\u1ff4\u1ff6-\u1ffc\u200c\u200d\u203f\u2040\u2054\u2071\u207f\u2090-\u209c\u20d0-\u20dc\u20e1\u20e5-\u20f0\u2102\u2107\u210a-\u2113\u2115\u2119-\u211d\u2124\u2126\u2128\u212a-\u212d\u212f-\u2139\u213c-\u213f\u2145-\u2149\u214e\u2160-\u2188\u2c00-\u2c2e\u2c30-\u2c5e\u2c60-\u2ce4\u2ceb-\u2cf3\u2d00-\u2d25\u2d27\u2d2d\u2d30-\u2d67\u2d6f\u2d7f-\u2d96\u2da0-\u2da6\u2da8-\u2dae\u2db0-\u2db6\u2db8-\u2dbe\u2dc0-\u2dc6\u2dc8-\u2dce\u2dd0-\u2dd6\u2dd8-\u2dde\u2de0-\u2dff\u2e2f\u3005-\u3007\u3021-\u302f\u3031-\u3035\u3038-\u303c\u3041-\u3096\u3099\u309a\u309d-\u309f\u30a1-\u30fa\u30fc-\u30ff\u3105-\u312d\u3131-\u318e\u31a0-\u31ba\u31f0-\u31ff\u3400-\u4db5\u4e00-\u9fcc\ua000-\ua48c\ua4d0-\ua4fd\ua500-\ua60c\ua610-\ua62b\ua640-\ua66f\ua674-\ua67d\ua67f-\ua697\ua69f-\ua6f1\ua717-\ua71f\ua722-\ua788\ua78b-\ua78e\ua790-\ua793\ua7a0-\ua7aa\ua7f8-\ua827\ua840-\ua873\ua880-\ua8c4\ua8d0-\ua8d9\ua8e0-\ua8f7\ua8fb\ua900-\ua92d\ua930-\ua953\ua960-\ua97c\ua980-\ua9c0\ua9cf-\ua9d9\uaa00-\uaa36\uaa40-\uaa4d\uaa50-\uaa59\uaa60-\uaa76\uaa7a\uaa7b\uaa80-\uaac2\uaadb-\uaadd\uaae0-\uaaef\uaaf2-\uaaf6\uab01-\uab06\uab09-\uab0e\uab11-\uab16\uab20-\uab26\uab28-\uab2e\uabc0-\uabea\uabec\uabed\uabf0-\uabf9\uac00-\ud7a3\ud7b0-\ud7c6\ud7cb-\ud7fb\uf900-\ufa6d\ufa70-\ufad9\ufb00-\ufb06\ufb13-\ufb17\ufb1d-\ufb28\ufb2a-\ufb36\ufb38-\ufb3c\ufb3e\ufb40\ufb41\ufb43\ufb44\ufb46-\ufbb1\ufbd3-\ufd3d\ufd50-\ufd8f\ufd92-\ufdc7\ufdf0-\ufdfb\ufe00-\ufe0f\ufe20-\ufe26\ufe33\ufe34\ufe4d-\ufe4f\ufe70-\ufe74\ufe76-\ufefc\uff10-\uff19\uff21-\uff3a\uff3f\uff41-\uff5a\uff66-\uffbe\uffc2-\uffc7\uffca-\uffcf\uffd2-\uffd7\uffda-\uffdc]')
+    };
+
+    // Ensure the condition is true, otherwise throw an error.
+    // This is only to have a better contract semantic, i.e. another safety net
+    // to catch a logic error. The condition shall be fulfilled in normal case.
+    // Do NOT use this to enforce a certain condition on any user input.
+
+    function assert(condition, message) {
+        if (!condition) {
+            throw new Error('ASSERT: ' + message);
+        }
+    }
+
+    function sliceSource(from, to) {
+        return source.slice(from, to);
+    }
+
+    if (typeof 'esprima'[0] === 'undefined') {
+        sliceSource = function sliceArraySource(from, to) {
+            return source.slice(from, to).join('');
+        };
+    }
+
+    function isDecimalDigit(ch) {
+        return '0123456789'.indexOf(ch) >= 0;
+    }
+
+    function isHexDigit(ch) {
+        return '0123456789abcdefABCDEF'.indexOf(ch) >= 0;
+    }
+
+    function isOctalDigit(ch) {
+        return '01234567'.indexOf(ch) >= 0;
+    }
+
+
+    // 7.2 White Space
+
+    function isWhiteSpace(ch) {
+        return (ch === ' ') || (ch === '\u0009') || (ch === '\u000B') ||
+            (ch === '\u000C') || (ch === '\u00A0') ||
+            (ch.charCodeAt(0) >= 0x1680 &&
+             '\u1680\u180E\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u202F\u205F\u3000\uFEFF'.indexOf(ch) >= 0);
+    }
+
+    // 7.3 Line Terminators
+
+    function isLineTerminator(ch) {
+        return (ch === '\n' || ch === '\r' || ch === '\u2028' || ch === '\u2029');
+    }
+
+    // 7.6 Identifier Names and Identifiers
+
+    function isIdentifierStart(ch) {
+        return (ch === '$') || (ch === '_') || (ch === '\\') ||
+            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierStart.test(ch));
+    }
+
+    function isIdentifierPart(ch) {
+        return (ch === '$') || (ch === '_') || (ch === '\\') ||
+            (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
+            ((ch >= '0') && (ch <= '9')) ||
+            ((ch.charCodeAt(0) >= 0x80) && Regex.NonAsciiIdentifierPart.test(ch));
+    }
+
+    // 7.6.1.2 Future Reserved Words
+
+    function isFutureReservedWord(id) {
+        switch (id) {
+
+        // Future reserved words.
+        case 'class':
+        case 'enum':
+        case 'export':
+        case 'extends':
+        case 'import':
+        case 'super':
+            return true;
+        }
+
+        return false;
+    }
+
+    function isStrictModeReservedWord(id) {
+        switch (id) {
+
+        // Strict Mode reserved words.
+        case 'implements':
+        case 'interface':
+        case 'package':
+        case 'private':
+        case 'protected':
+        case 'public':
+        case 'static':
+        case 'yield':
+        case 'let':
+            return true;
+        }
+
+        return false;
+    }
+
+    function isRestrictedWord(id) {
+        return id === 'eval' || id === 'arguments';
+    }
+
+    // 7.6.1.1 Keywords
+
+    function isKeyword(id) {
+        var keyword = false;
+        switch (id.length) {
+        case 2:
+            keyword = (id === 'if') || (id === 'in') || (id === 'do');
+            break;
+        case 3:
+            keyword = (id === 'var') || (id === 'for') || (id === 'new') || (id === 'try');
+            break;
+        case 4:
+            keyword = (id === 'this') || (id === 'else') || (id === 'case') || (id === 'void') || (id === 'with');
+            break;
+        case 5:
+            keyword = (id === 'while') || (id === 'break') || (id === 'catch') || (id === 'throw');
+            break;
+        case 6:
+            keyword = (id === 'return') || (id === 'typeof') || (id === 'delete') || (id === 'switch');
+            break;
+        case 7:
+            keyword = (id === 'default') || (id === 'finally');
+            break;
+        case 8:
+            keyword = (id === 'function') || (id === 'continue') || (id === 'debugger');
+            break;
+        case 10:
+            keyword = (id === 'instanceof');
+            break;
+        }
+
+        if (keyword) {
+            return true;
+        }
+
+        switch (id) {
+        // Future reserved words.
+        // 'const' is specialized as Keyword in V8.
+        case 'const':
+            return true;
+
+        // For compatiblity to SpiderMonkey and ES.next
+        case 'yield':
+        case 'let':
+            return true;
+        }
+
+        if (strict && isStrictModeReservedWord(id)) {
+            return true;
+        }
+
+        return isFutureReservedWord(id);
+    }
+
+    // Return the next character and move forward.
+
+    function nextChar() {
+        return source[index++];
+    }
+
+    // 7.4 Comments
+
+    function skipComment() {
+        var ch, blockComment, lineComment;
+
+        blockComment = false;
+        lineComment = false;
+
+        while (index < length) {
+            ch = source[index];
+
+            if (lineComment) {
+                ch = nextChar();
+                if (isLineTerminator(ch)) {
+                    lineComment = false;
+                    if (ch === '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    ++lineNumber;
+                    lineStart = index;
+                }
+            } else if (blockComment) {
+                if (isLineTerminator(ch)) {
+                    if (ch === '\r' && source[index + 1] === '\n') {
+                        ++index;
+                    }
+                    ++lineNumber;
+                    ++index;
+                    lineStart = index;
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    ch = nextChar();
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                    if (ch === '*') {
+                        ch = source[index];
+                        if (ch === '/') {
+                            ++index;
+                            blockComment = false;
+                        }
+                    }
+                }
+            } else if (ch === '/') {
+                ch = source[index + 1];
+                if (ch === '/') {
+                    index += 2;
+                    lineComment = true;
+                } else if (ch === '*') {
+                    index += 2;
+                    blockComment = true;
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    break;
+                }
+            } else if (isWhiteSpace(ch)) {
+                ++index;
+            } else if (isLineTerminator(ch)) {
+                ++index;
+                if (ch ===  '\r' && source[index] === '\n') {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+            } else {
+                break;
+            }
+        }
+    }
+
+    function scanHexEscape(prefix) {
+        var i, len, ch, code = 0;
+
+        len = (prefix === 'u') ? 4 : 2;
+        for (i = 0; i < len; ++i) {
+            if (index < length && isHexDigit(source[index])) {
+                ch = nextChar();
+                code = code * 16 + '0123456789abcdef'.indexOf(ch.toLowerCase());
+            } else {
+                return '';
+            }
+        }
+        return String.fromCharCode(code);
+    }
+
+    function scanIdentifier() {
+        var ch, start, id, restore;
+
+        ch = source[index];
+        if (!isIdentifierStart(ch)) {
+            return;
+        }
+
+        start = index;
+        if (ch === '\\') {
+            ++index;
+            if (source[index] !== 'u') {
+                return;
+            }
+            ++index;
+            restore = index;
+            ch = scanHexEscape('u');
+            if (ch) {
+                if (ch === '\\' || !isIdentifierStart(ch)) {
+                    return;
+                }
+                id = ch;
+            } else {
+                index = restore;
+                id = 'u';
+            }
+        } else {
+            id = nextChar();
+        }
+
+        while (index < length) {
+            ch = source[index];
+            if (!isIdentifierPart(ch)) {
+                break;
+            }
+            if (ch === '\\') {
+                ++index;
+                if (source[index] !== 'u') {
+                    return;
+                }
+                ++index;
+                restore = index;
+                ch = scanHexEscape('u');
+                if (ch) {
+                    if (ch === '\\' || !isIdentifierPart(ch)) {
+                        return;
+                    }
+                    id += ch;
+                } else {
+                    index = restore;
+                    id += 'u';
+                }
+            } else {
+                id += nextChar();
+            }
+        }
+
+        // There is no keyword or literal with only one character.
+        // Thus, it must be an identifier.
+        if (id.length === 1) {
+            return {
+                type: Token.Identifier,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (isKeyword(id)) {
+            return {
+                type: Token.Keyword,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // 7.8.1 Null Literals
+
+        if (id === 'null') {
+            return {
+                type: Token.NullLiteral,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // 7.8.2 Boolean Literals
+
+        if (id === 'true' || id === 'false') {
+            return {
+                type: Token.BooleanLiteral,
+                value: id,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        return {
+            type: Token.Identifier,
+            value: id,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    // 7.7 Punctuators
+
+    function scanPunctuator() {
+        var start = index,
+            ch1 = source[index],
+            ch2,
+            ch3,
+            ch4;
+
+        // Check for most common single-character punctuators.
+
+        if (ch1 === ';' || ch1 === '{' || ch1 === '}') {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === ',' || ch1 === '(' || ch1 === ')') {
+            ++index;
+            return {
+                type: Token.Punctuator,
+                value: ch1,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // Dot (.) can also start a floating-point number, hence the need
+        // to check the next character.
+
+        ch2 = source[index + 1];
+        if (ch1 === '.' && !isDecimalDigit(ch2)) {
+            return {
+                type: Token.Punctuator,
+                value: nextChar(),
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // Peek more characters.
+
+        ch3 = source[index + 2];
+        ch4 = source[index + 3];
+
+        // 4-character punctuator: >>>=
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
+            if (ch4 === '=') {
+                index += 4;
+                return {
+                    type: Token.Punctuator,
+                    value: '>>>=',
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        // 3-character punctuators: === !== >>> <<= >>=
+
+        if (ch1 === '=' && ch2 === '=' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '===',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '!' && ch2 === '=' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '!==',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '>') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '>>>',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '<' && ch2 === '<' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '<<=',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        if (ch1 === '>' && ch2 === '>' && ch3 === '=') {
+            index += 3;
+            return {
+                type: Token.Punctuator,
+                value: '>>=',
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+
+        // 2-character punctuators: <= >= == != ++ -- << >> && ||
+        // += -= *= %= &= |= ^= /=
+
+        if (ch2 === '=') {
+            if ('<>=!+-*%&|^/'.indexOf(ch1) >= 0) {
+                index += 2;
+                return {
+                    type: Token.Punctuator,
+                    value: ch1 + ch2,
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        if (ch1 === ch2 && ('+-<>&|'.indexOf(ch1) >= 0)) {
+            if ('+-<>&|'.indexOf(ch2) >= 0) {
+                index += 2;
+                return {
+                    type: Token.Punctuator,
+                    value: ch1 + ch2,
+                    lineNumber: lineNumber,
+                    lineStart: lineStart,
+                    range: [start, index]
+                };
+            }
+        }
+
+        // The remaining 1-character punctuators.
+
+        if ('[]<>+-*%&|^!~?:=/'.indexOf(ch1) >= 0) {
+            return {
+                type: Token.Punctuator,
+                value: nextChar(),
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [start, index]
+            };
+        }
+    }
+
+    // 7.8.3 Numeric Literals
+
+    function scanNumericLiteral() {
+        var number, start, ch;
+
+        ch = source[index];
+        assert(isDecimalDigit(ch) || (ch === '.'),
+            'Numeric literal must start with a decimal digit or a decimal point');
+
+        start = index;
+        number = '';
+        if (ch !== '.') {
+            number = nextChar();
+            ch = source[index];
+
+            // Hex number starts with '0x'.
+            // Octal number starts with '0'.
+            if (number === '0') {
+                if (ch === 'x' || ch === 'X') {
+                    number += nextChar();
+                    while (index < length) {
+                        ch = source[index];
+                        if (!isHexDigit(ch)) {
+                            break;
+                        }
+                        number += nextChar();
+                    }
+
+                    if (number.length <= 2) {
+                        // only 0x
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+
+                    if (index < length) {
+                        ch = source[index];
+                        if (isIdentifierStart(ch)) {
+                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                        }
+                    }
+                    return {
+                        type: Token.NumericLiteral,
+                        value: parseInt(number, 16),
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        range: [start, index]
+                    };
+                } else if (isOctalDigit(ch)) {
+                    number += nextChar();
+                    while (index < length) {
+                        ch = source[index];
+                        if (!isOctalDigit(ch)) {
+                            break;
+                        }
+                        number += nextChar();
+                    }
+
+                    if (index < length) {
+                        ch = source[index];
+                        if (isIdentifierStart(ch) || isDecimalDigit(ch)) {
+                            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                        }
+                    }
+                    return {
+                        type: Token.NumericLiteral,
+                        value: parseInt(number, 8),
+                        octal: true,
+                        lineNumber: lineNumber,
+                        lineStart: lineStart,
+                        range: [start, index]
+                    };
+                }
+
+                // decimal number starts with '0' such as '09' is illegal.
+                if (isDecimalDigit(ch)) {
+                    throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                }
+            }
+
+            while (index < length) {
+                ch = source[index];
+                if (!isDecimalDigit(ch)) {
+                    break;
+                }
+                number += nextChar();
+            }
+        }
+
+        if (ch === '.') {
+            number += nextChar();
+            while (index < length) {
+                ch = source[index];
+                if (!isDecimalDigit(ch)) {
+                    break;
+                }
+                number += nextChar();
+            }
+        }
+
+        if (ch === 'e' || ch === 'E') {
+            number += nextChar();
+
+            ch = source[index];
+            if (ch === '+' || ch === '-') {
+                number += nextChar();
+            }
+
+            ch = source[index];
+            if (isDecimalDigit(ch)) {
+                number += nextChar();
+                while (index < length) {
+                    ch = source[index];
+                    if (!isDecimalDigit(ch)) {
+                        break;
+                    }
+                    number += nextChar();
+                }
+            } else {
+                ch = 'character ' + ch;
+                if (index >= length) {
+                    ch = '<end>';
+                }
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        if (index < length) {
+            ch = source[index];
+            if (isIdentifierStart(ch)) {
+                throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+            }
+        }
+
+        return {
+            type: Token.NumericLiteral,
+            value: parseFloat(number),
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    // 7.8.4 String Literals
+
+    function scanStringLiteral() {
+        var str = '', quote, start, ch, code, unescaped, restore, octal = false;
+
+        quote = source[index];
+        assert((quote === '\'' || quote === '"'),
+            'String literal must starts with a quote');
+
+        start = index;
+        ++index;
+
+        while (index < length) {
+            ch = nextChar();
+
+            if (ch === quote) {
+                quote = '';
+                break;
+            } else if (ch === '\\') {
+                ch = nextChar();
+                if (!isLineTerminator(ch)) {
+                    switch (ch) {
+                    case 'n':
+                        str += '\n';
+                        break;
+                    case 'r':
+                        str += '\r';
+                        break;
+                    case 't':
+                        str += '\t';
+                        break;
+                    case 'u':
+                    case 'x':
+                        restore = index;
+                        unescaped = scanHexEscape(ch);
+                        if (unescaped) {
+                            str += unescaped;
+                        } else {
+                            index = restore;
+                            str += ch;
+                        }
+                        break;
+                    case 'b':
+                        str += '\b';
+                        break;
+                    case 'f':
+                        str += '\f';
+                        break;
+                    case 'v':
+                        str += '\v';
+                        break;
+
+                    default:
+                        if (isOctalDigit(ch)) {
+                            code = '01234567'.indexOf(ch);
+
+                            // \0 is not octal escape sequence
+                            if (code !== 0) {
+                                octal = true;
+                            }
+
+                            if (index < length && isOctalDigit(source[index])) {
+                                octal = true;
+                                code = code * 8 + '01234567'.indexOf(nextChar());
+
+                                // 3 digits are only allowed when string starts
+                                // with 0, 1, 2, 3
+                                if ('0123'.indexOf(ch) >= 0 &&
+                                        index < length &&
+                                        isOctalDigit(source[index])) {
+                                    code = code * 8 + '01234567'.indexOf(nextChar());
+                                }
+                            }
+                            str += String.fromCharCode(code);
+                        } else {
+                            str += ch;
+                        }
+                        break;
+                    }
+                } else {
+                    ++lineNumber;
+                    if (ch ===  '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                }
+            } else if (isLineTerminator(ch)) {
+                break;
+            } else {
+                str += ch;
+            }
+        }
+
+        if (quote !== '') {
+            throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+        }
+
+        return {
+            type: Token.StringLiteral,
+            value: str,
+            octal: octal,
+            lineNumber: lineNumber,
+            lineStart: lineStart,
+            range: [start, index]
+        };
+    }
+
+    function scanRegExp() {
+        var str = '', ch, start, pattern, flags, value, classMarker = false, restore, terminated = false;
+
+        buffer = null;
+        skipComment();
+
+        start = index;
+        ch = source[index];
+        assert(ch === '/', 'Regular expression literal must start with a slash');
+        str = nextChar();
+
+        while (index < length) {
+            ch = nextChar();
+            str += ch;
+            if (classMarker) {
+                if (ch === ']') {
+                    classMarker = false;
+                }
+            } else {
+                if (ch === '\\') {
+                    ch = nextChar();
+                    // ECMA-262 7.8.5
+                    if (isLineTerminator(ch)) {
+                        throwError({}, Messages.UnterminatedRegExp);
+                    }
+                    str += ch;
+                } else if (ch === '/') {
+                    terminated = true;
+                    break;
+                } else if (ch === '[') {
+                    classMarker = true;
+                } else if (isLineTerminator(ch)) {
+                    throwError({}, Messages.UnterminatedRegExp);
+                }
+            }
+        }
+
+        if (!terminated) {
+            throwError({}, Messages.UnterminatedRegExp);
+        }
+
+        // Exclude leading and trailing slash.
+        pattern = str.substr(1, str.length - 2);
+
+        flags = '';
+        while (index < length) {
+            ch = source[index];
+            if (!isIdentifierPart(ch)) {
+                break;
+            }
+
+            ++index;
+            if (ch === '\\' && index < length) {
+                ch = source[index];
+                if (ch === 'u') {
+                    ++index;
+                    restore = index;
+                    ch = scanHexEscape('u');
+                    if (ch) {
+                        flags += ch;
+                        str += '\\u';
+                        for (; restore < index; ++restore) {
+                            str += source[restore];
+                        }
+                    } else {
+                        index = restore;
+                        flags += 'u';
+                        str += '\\u';
+                    }
+                } else {
+                    str += '\\';
+                }
+            } else {
+                flags += ch;
+                str += ch;
+            }
+        }
+
+        try {
+            value = new RegExp(pattern, flags);
+        } catch (e) {
+            throwError({}, Messages.InvalidRegExp);
+        }
+
+        return {
+            literal: str,
+            value: value,
+            range: [start, index]
+        };
+    }
+
+    function isIdentifierName(token) {
+        return token.type === Token.Identifier ||
+            token.type === Token.Keyword ||
+            token.type === Token.BooleanLiteral ||
+            token.type === Token.NullLiteral;
+    }
+
+    function advance() {
+        var ch, token;
+
+        skipComment();
+
+        if (index >= length) {
+            return {
+                type: Token.EOF,
+                lineNumber: lineNumber,
+                lineStart: lineStart,
+                range: [index, index]
+            };
+        }
+
+        token = scanPunctuator();
+        if (typeof token !== 'undefined') {
+            return token;
+        }
+
+        ch = source[index];
+
+        if (ch === '\'' || ch === '"') {
+            return scanStringLiteral();
+        }
+
+        if (ch === '.' || isDecimalDigit(ch)) {
+            return scanNumericLiteral();
+        }
+
+        token = scanIdentifier();
+        if (typeof token !== 'undefined') {
+            return token;
+        }
+
+        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+    }
+
+    function lex() {
+        var token;
+
+        if (buffer) {
+            index = buffer.range[1];
+            lineNumber = buffer.lineNumber;
+            lineStart = buffer.lineStart;
+            token = buffer;
+            buffer = null;
+            return token;
+        }
+
+        buffer = null;
+        return advance();
+    }
+
+    function lookahead() {
+        var pos, line, start;
+
+        if (buffer !== null) {
+            return buffer;
+        }
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        buffer = advance();
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return buffer;
+    }
+
+    // Return true if there is a line terminator before the next token.
+
+    function peekLineTerminator() {
+        var pos, line, start, found;
+
+        pos = index;
+        line = lineNumber;
+        start = lineStart;
+        skipComment();
+        found = lineNumber !== line;
+        index = pos;
+        lineNumber = line;
+        lineStart = start;
+
+        return found;
+    }
+
+    // Throw an exception
+
+    function throwError(token, messageFormat) {
+        var error,
+            args = Array.prototype.slice.call(arguments, 2),
+            msg = messageFormat.replace(
+                /%(\d)/g,
+                function (whole, index) {
+                    return args[index] || '';
+                }
+            );
+
+        if (typeof token.lineNumber === 'number') {
+            error = new Error('Line ' + token.lineNumber + ': ' + msg);
+            error.index = token.range[0];
+            error.lineNumber = token.lineNumber;
+            error.column = token.range[0] - lineStart + 1;
+        } else {
+            error = new Error('Line ' + lineNumber + ': ' + msg);
+            error.index = index;
+            error.lineNumber = lineNumber;
+            error.column = index - lineStart + 1;
+        }
+
+        throw error;
+    }
+
+    function throwErrorTolerant() {
+        try {
+            throwError.apply(null, arguments);
+        } catch (e) {
+            if (extra.errors) {
+                extra.errors.push(e);
+            } else {
+                throw e;
+            }
+        }
+    }
+
+
+    // Throw an exception because of the token.
+
+    function throwUnexpected(token) {
+        if (token.type === Token.EOF) {
+            throwError(token, Messages.UnexpectedEOS);
+        }
+
+        if (token.type === Token.NumericLiteral) {
+            throwError(token, Messages.UnexpectedNumber);
+        }
+
+        if (token.type === Token.StringLiteral) {
+            throwError(token, Messages.UnexpectedString);
+        }
+
+        if (token.type === Token.Identifier) {
+            throwError(token, Messages.UnexpectedIdentifier);
+        }
+
+        if (token.type === Token.Keyword) {
+            if (isFutureReservedWord(token.value)) {
+                throwError(token, Messages.UnexpectedReserved);
+            } else if (strict && isStrictModeReservedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictReservedWord);
+                return;
+            }
+            throwError(token, Messages.UnexpectedToken, token.value);
+        }
+
+        // BooleanLiteral, NullLiteral, or Punctuator.
+        throwError(token, Messages.UnexpectedToken, token.value);
+    }
+
+    // Expect the next token to match the specified punctuator.
+    // If not, an exception will be thrown.
+
+    function expect(value) {
+        var token = lex();
+        if (token.type !== Token.Punctuator || token.value !== value) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Expect the next token to match the specified keyword.
+    // If not, an exception will be thrown.
+
+    function expectKeyword(keyword) {
+        var token = lex();
+        if (token.type !== Token.Keyword || token.value !== keyword) {
+            throwUnexpected(token);
+        }
+    }
+
+    // Return true if the next token matches the specified punctuator.
+
+    function match(value) {
+        var token = lookahead();
+        return token.type === Token.Punctuator && token.value === value;
+    }
+
+    // Return true if the next token matches the specified keyword
+
+    function matchKeyword(keyword) {
+        var token = lookahead();
+        return token.type === Token.Keyword && token.value === keyword;
+    }
+
+    // Return true if the next token is an assignment operator
+
+    function matchAssign() {
+        var token = lookahead(),
+            op = token.value;
+
+        if (token.type !== Token.Punctuator) {
+            return false;
+        }
+        return op === '=' ||
+            op === '*=' ||
+            op === '/=' ||
+            op === '%=' ||
+            op === '+=' ||
+            op === '-=' ||
+            op === '<<=' ||
+            op === '>>=' ||
+            op === '>>>=' ||
+            op === '&=' ||
+            op === '^=' ||
+            op === '|=';
+    }
+
+    function consumeSemicolon() {
+        var token, line;
+
+        // Catch the very common case first.
+        if (source[index] === ';') {
+            lex();
+            return;
+        }
+
+        line = lineNumber;
+        skipComment();
+        if (lineNumber !== line) {
+            return;
+        }
+
+        if (match(';')) {
+            lex();
+            return;
+        }
+
+        token = lookahead();
+        if (token.type !== Token.EOF && !match('}')) {
+            throwUnexpected(token);
+        }
+        return;
+    }
+
+    // Return true if provided expression is LeftHandSideExpression
+
+    function isLeftHandSide(expr) {
+        return expr.type === Syntax.Identifier || expr.type === Syntax.MemberExpression;
+    }
+
+    // 11.1.4 Array Initialiser
+
+    function parseArrayInitialiser() {
+        var elements = [];
+
+        expect('[');
+
+        while (!match(']')) {
+            if (match(',')) {
+                lex();
+                elements.push(null);
+            } else {
+                elements.push(parseAssignmentExpression());
+
+                if (!match(']')) {
+                    expect(',');
+                }
+            }
+        }
+
+        expect(']');
+
+        return {
+            type: Syntax.ArrayExpression,
+            elements: elements
+        };
+    }
+
+    // 11.1.5 Object Initialiser
+
+    function parsePropertyFunction(param, first) {
+        var previousStrict, body;
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (first && strict && isRestrictedWord(param[0].name)) {
+            throwErrorTolerant(first, Messages.StrictParamName);
+        }
+        strict = previousStrict;
+
+        return {
+            type: Syntax.FunctionExpression,
+            id: null,
+            params: param,
+            defaults: [],
+            body: body,
+            rest: null,
+            generator: false,
+            expression: false
+        };
+    }
+
+    function parseObjectPropertyKey() {
+        var token = lex();
+
+        // Note: This function is called only from parseObjectProperty(), where
+        // EOF and Punctuator tokens are already filtered out.
+
+        if (token.type === Token.StringLiteral || token.type === Token.NumericLiteral) {
+            if (strict && token.octal) {
+                throwErrorTolerant(token, Messages.StrictOctalLiteral);
+            }
+            return createLiteral(token);
+        }
+
+        return {
+            type: Syntax.Identifier,
+            name: token.value
+        };
+    }
+
+    function parseObjectProperty() {
+        var token, key, id, param;
+
+        token = lookahead();
+
+        if (token.type === Token.Identifier) {
+
+            id = parseObjectPropertyKey();
+
+            // Property Assignment: Getter and Setter.
+
+            if (token.value === 'get' && !match(':')) {
+                key = parseObjectPropertyKey();
+                expect('(');
+                expect(')');
+                return {
+                    type: Syntax.Property,
+                    key: key,
+                    value: parsePropertyFunction([]),
+                    kind: 'get'
+                };
+            } else if (token.value === 'set' && !match(':')) {
+                key = parseObjectPropertyKey();
+                expect('(');
+                token = lookahead();
+                if (token.type !== Token.Identifier) {
+                    throwUnexpected(lex());
+                }
+                param = [ parseVariableIdentifier() ];
+                expect(')');
+                return {
+                    type: Syntax.Property,
+                    key: key,
+                    value: parsePropertyFunction(param, token),
+                    kind: 'set'
+                };
+            } else {
+                expect(':');
+                return {
+                    type: Syntax.Property,
+                    key: id,
+                    value: parseAssignmentExpression(),
+                    kind: 'init'
+                };
+            }
+        } else if (token.type === Token.EOF || token.type === Token.Punctuator) {
+            throwUnexpected(token);
+        } else {
+            key = parseObjectPropertyKey();
+            expect(':');
+            return {
+                type: Syntax.Property,
+                key: key,
+                value: parseAssignmentExpression(),
+                kind: 'init'
+            };
+        }
+    }
+
+    function parseObjectInitialiser() {
+        var properties = [], property, name, kind, map = {}, toString = String;
+
+        expect('{');
+
+        while (!match('}')) {
+            property = parseObjectProperty();
+
+            if (property.key.type === Syntax.Identifier) {
+                name = property.key.name;
+            } else {
+                name = toString(property.key.value);
+            }
+            kind = (property.kind === 'init') ? PropertyKind.Data : (property.kind === 'get') ? PropertyKind.Get : PropertyKind.Set;
+            if (Object.prototype.hasOwnProperty.call(map, name)) {
+                if (map[name] === PropertyKind.Data) {
+                    if (strict && kind === PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.StrictDuplicateProperty);
+                    } else if (kind !== PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.AccessorDataProperty);
+                    }
+                } else {
+                    if (kind === PropertyKind.Data) {
+                        throwErrorTolerant({}, Messages.AccessorDataProperty);
+                    } else if (map[name] & kind) {
+                        throwErrorTolerant({}, Messages.AccessorGetSet);
+                    }
+                }
+                map[name] |= kind;
+            } else {
+                map[name] = kind;
+            }
+
+            properties.push(property);
+
+            if (!match('}')) {
+                expect(',');
+            }
+        }
+
+        expect('}');
+
+        return {
+            type: Syntax.ObjectExpression,
+            properties: properties
+        };
+    }
+
+    // 11.1 Primary Expressions
+
+    function parsePrimaryExpression() {
+        var expr,
+            token = lookahead(),
+            type = token.type;
+
+        if (type === Token.Identifier) {
+            return {
+                type: Syntax.Identifier,
+                name: lex().value
+            };
+        }
+
+        if (type === Token.StringLiteral || type === Token.NumericLiteral) {
+            if (strict && token.octal) {
+                throwErrorTolerant(token, Messages.StrictOctalLiteral);
+            }
+            return createLiteral(lex());
+        }
+
+        if (type === Token.Keyword) {
+            if (matchKeyword('this')) {
+                lex();
+                return {
+                    type: Syntax.ThisExpression
+                };
+            }
+
+            if (matchKeyword('function')) {
+                return parseFunctionExpression();
+            }
+        }
+
+        if (type === Token.BooleanLiteral) {
+            lex();
+            token.value = (token.value === 'true');
+            return createLiteral(token);
+        }
+
+        if (type === Token.NullLiteral) {
+            lex();
+            token.value = null;
+            return createLiteral(token);
+        }
+
+        if (match('[')) {
+            return parseArrayInitialiser();
+        }
+
+        if (match('{')) {
+            return parseObjectInitialiser();
+        }
+
+        if (match('(')) {
+            lex();
+            state.lastParenthesized = expr = parseExpression();
+            expect(')');
+            return expr;
+        }
+
+        if (match('/') || match('/=')) {
+            return createLiteral(scanRegExp());
+        }
+
+        return throwUnexpected(lex());
+    }
+
+    // 11.2 Left-Hand-Side Expressions
+
+    function parseArguments() {
+        var args = [];
+
+        expect('(');
+
+        if (!match(')')) {
+            while (index < length) {
+                args.push(parseAssignmentExpression());
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        return args;
+    }
+
+    function parseNonComputedProperty() {
+        var token = lex();
+
+        if (!isIdentifierName(token)) {
+            throwUnexpected(token);
+        }
+
+        return {
+            type: Syntax.Identifier,
+            name: token.value
+        };
+    }
+
+    function parseNonComputedMember() {
+        expect('.');
+
+        return parseNonComputedProperty();
+    }
+
+    function parseComputedMember() {
+        var expr;
+
+        expect('[');
+
+        expr = parseExpression();
+
+        expect(']');
+
+        return expr;
+    }
+
+    function parseNewExpression() {
+        var expr;
+
+        expectKeyword('new');
+
+        expr = {
+            type: Syntax.NewExpression,
+            callee: parseLeftHandSideExpression(),
+            'arguments': []
+        };
+
+        if (match('(')) {
+            expr['arguments'] = parseArguments();
+        }
+
+        return expr;
+    }
+
+    function parseLeftHandSideExpressionAllowCall() {
+        var expr;
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[') || match('(')) {
+            if (match('(')) {
+                expr = {
+                    type: Syntax.CallExpression,
+                    callee: expr,
+                    'arguments': parseArguments()
+                };
+            } else if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+            }
+        }
+
+        return expr;
+    }
+
+
+    function parseLeftHandSideExpression() {
+        var expr;
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[')) {
+            if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+            }
+        }
+
+        return expr;
+    }
+
+    // 11.3 Postfix Expressions
+
+    function parsePostfixExpression() {
+        var expr = parseLeftHandSideExpressionAllowCall();
+
+        if ((match('++') || match('--')) && !peekLineTerminator()) {
+            // 11.3.1, 11.3.2
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPostfix);
+            }
+
+            if (!isLeftHandSide(expr)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+
+            expr = {
+                type: Syntax.UpdateExpression,
+                operator: lex().value,
+                argument: expr,
+                prefix: false
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.4 Unary Operators
+
+    function parseUnaryExpression() {
+        var token, expr;
+
+        if (match('++') || match('--')) {
+            token = lex();
+            expr = parseUnaryExpression();
+            // 11.4.4, 11.4.5
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant({}, Messages.StrictLHSPrefix);
+            }
+
+            if (!isLeftHandSide(expr)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+
+            expr = {
+                type: Syntax.UpdateExpression,
+                operator: token.value,
+                argument: expr,
+                prefix: true
+            };
+            return expr;
+        }
+
+        if (match('+') || match('-') || match('~') || match('!')) {
+            expr = {
+                type: Syntax.UnaryExpression,
+                operator: lex().value,
+                argument: parseUnaryExpression()
+            };
+            return expr;
+        }
+
+        if (matchKeyword('delete') || matchKeyword('void') || matchKeyword('typeof')) {
+            expr = {
+                type: Syntax.UnaryExpression,
+                operator: lex().value,
+                argument: parseUnaryExpression()
+            };
+            if (strict && expr.operator === 'delete' && expr.argument.type === Syntax.Identifier) {
+                throwErrorTolerant({}, Messages.StrictDelete);
+            }
+            return expr;
+        }
+
+        return parsePostfixExpression();
+    }
+
+    // 11.5 Multiplicative Operators
+
+    function parseMultiplicativeExpression() {
+        var expr = parseUnaryExpression();
+
+        while (match('*') || match('/') || match('%')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseUnaryExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.6 Additive Operators
+
+    function parseAdditiveExpression() {
+        var expr = parseMultiplicativeExpression();
+
+        while (match('+') || match('-')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseMultiplicativeExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.7 Bitwise Shift Operators
+
+    function parseShiftExpression() {
+        var expr = parseAdditiveExpression();
+
+        while (match('<<') || match('>>') || match('>>>')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseAdditiveExpression()
+            };
+        }
+
+        return expr;
+    }
+    // 11.8 Relational Operators
+
+    function parseRelationalExpression() {
+        var expr, previousAllowIn;
+
+        previousAllowIn = state.allowIn;
+        state.allowIn = true;
+
+        expr = parseShiftExpression();
+
+        while (match('<') || match('>') || match('<=') || match('>=') || (previousAllowIn && matchKeyword('in')) || matchKeyword('instanceof')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseShiftExpression()
+            };
+        }
+
+        state.allowIn = previousAllowIn;
+        return expr;
+    }
+
+    // 11.9 Equality Operators
+
+    function parseEqualityExpression() {
+        var expr = parseRelationalExpression();
+
+        while (match('==') || match('!=') || match('===') || match('!==')) {
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseRelationalExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.10 Binary Bitwise Operators
+
+    function parseBitwiseANDExpression() {
+        var expr = parseEqualityExpression();
+
+        while (match('&')) {
+            lex();
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: '&',
+                left: expr,
+                right: parseEqualityExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    function parseBitwiseXORExpression() {
+        var expr = parseBitwiseANDExpression();
+
+        while (match('^')) {
+            lex();
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: '^',
+                left: expr,
+                right: parseBitwiseANDExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    function parseBitwiseORExpression() {
+        var expr = parseBitwiseXORExpression();
+
+        while (match('|')) {
+            lex();
+            expr = {
+                type: Syntax.BinaryExpression,
+                operator: '|',
+                left: expr,
+                right: parseBitwiseXORExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.11 Binary Logical Operators
+
+    function parseLogicalANDExpression() {
+        var expr = parseBitwiseORExpression();
+
+        while (match('&&')) {
+            lex();
+            expr = {
+                type: Syntax.LogicalExpression,
+                operator: '&&',
+                left: expr,
+                right: parseBitwiseORExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    function parseLogicalORExpression() {
+        var expr = parseLogicalANDExpression();
+
+        while (match('||')) {
+            lex();
+            expr = {
+                type: Syntax.LogicalExpression,
+                operator: '||',
+                left: expr,
+                right: parseLogicalANDExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.12 Conditional Operator
+
+    function parseConditionalExpression() {
+        var expr, previousAllowIn, consequent;
+
+        expr = parseLogicalORExpression();
+
+        if (match('?')) {
+            lex();
+            previousAllowIn = state.allowIn;
+            state.allowIn = true;
+            consequent = parseAssignmentExpression();
+            state.allowIn = previousAllowIn;
+            expect(':');
+
+            expr = {
+                type: Syntax.ConditionalExpression,
+                test: expr,
+                consequent: consequent,
+                alternate: parseAssignmentExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.13 Assignment Operators
+
+    function parseAssignmentExpression() {
+        var token, expr;
+
+        token = lookahead();
+        expr = parseConditionalExpression();
+
+        if (matchAssign()) {
+            // LeftHandSideExpression
+            if (!isLeftHandSide(expr)) {
+                throwError({}, Messages.InvalidLHSInAssignment);
+            }
+
+            // 11.13.1
+            if (strict && expr.type === Syntax.Identifier && isRestrictedWord(expr.name)) {
+                throwErrorTolerant(token, Messages.StrictLHSAssignment);
+            }
+
+            expr = {
+                type: Syntax.AssignmentExpression,
+                operator: lex().value,
+                left: expr,
+                right: parseAssignmentExpression()
+            };
+        }
+
+        return expr;
+    }
+
+    // 11.14 Comma Operator
+
+    function parseExpression() {
+        var expr = parseAssignmentExpression();
+
+        if (match(',')) {
+            expr = {
+                type: Syntax.SequenceExpression,
+                expressions: [ expr ]
+            };
+
+            while (index < length) {
+                if (!match(',')) {
+                    break;
+                }
+                lex();
+                expr.expressions.push(parseAssignmentExpression());
+            }
+
+        }
+        return expr;
+    }
+
+    // 12.1 Block
+
+    function parseStatementList() {
+        var list = [],
+            statement;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            statement = parseSourceElement();
+            if (typeof statement === 'undefined') {
+                break;
+            }
+            list.push(statement);
+        }
+
+        return list;
+    }
+
+    function parseBlock() {
+        var block;
+
+        expect('{');
+
+        block = parseStatementList();
+
+        expect('}');
+
+        return {
+            type: Syntax.BlockStatement,
+            body: block
+        };
+    }
+
+    // 12.2 Variable Statement
+
+    function parseVariableIdentifier() {
+        var token = lex();
+
+        if (token.type !== Token.Identifier) {
+            throwUnexpected(token);
+        }
+
+        return {
+            type: Syntax.Identifier,
+            name: token.value
+        };
+    }
+
+    function parseVariableDeclaration(kind) {
+        var id = parseVariableIdentifier(),
+            init = null;
+
+        // 12.2.1
+        if (strict && isRestrictedWord(id.name)) {
+            throwErrorTolerant({}, Messages.StrictVarName);
+        }
+
+        if (kind === 'const') {
+            expect('=');
+            init = parseAssignmentExpression();
+        } else if (match('=')) {
+            lex();
+            init = parseAssignmentExpression();
+        }
+
+        return {
+            type: Syntax.VariableDeclarator,
+            id: id,
+            init: init
+        };
+    }
+
+    function parseVariableDeclarationList(kind) {
+        var list = [];
+
+        while (index < length) {
+            list.push(parseVariableDeclaration(kind));
+            if (!match(',')) {
+                break;
+            }
+            lex();
+        }
+
+        return list;
+    }
+
+    function parseVariableStatement() {
+        var declarations;
+
+        expectKeyword('var');
+
+        declarations = parseVariableDeclarationList();
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.VariableDeclaration,
+            declarations: declarations,
+            kind: 'var'
+        };
+    }
+
+    // kind may be `const` or `let`
+    // Both are experimental and not in the specification yet.
+    // see http://wiki.ecmascript.org/doku.php?id=harmony:const
+    // and http://wiki.ecmascript.org/doku.php?id=harmony:let
+    function parseConstLetDeclaration(kind) {
+        var declarations;
+
+        expectKeyword(kind);
+
+        declarations = parseVariableDeclarationList(kind);
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.VariableDeclaration,
+            declarations: declarations,
+            kind: kind
+        };
+    }
+
+    // 12.3 Empty Statement
+
+    function parseEmptyStatement() {
+        expect(';');
+
+        return {
+            type: Syntax.EmptyStatement
+        };
+    }
+
+    // 12.4 Expression Statement
+
+    function parseExpressionStatement() {
+        var expr = parseExpression();
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ExpressionStatement,
+            expression: expr
+        };
+    }
+
+    // 12.5 If statement
+
+    function parseIfStatement() {
+        var test, consequent, alternate;
+
+        expectKeyword('if');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        consequent = parseStatement();
+
+        if (matchKeyword('else')) {
+            lex();
+            alternate = parseStatement();
+        } else {
+            alternate = null;
+        }
+
+        return {
+            type: Syntax.IfStatement,
+            test: test,
+            consequent: consequent,
+            alternate: alternate
+        };
+    }
+
+    // 12.6 Iteration Statements
+
+    function parseDoWhileStatement() {
+        var body, test, oldInIteration;
+
+        expectKeyword('do');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        if (match(';')) {
+            lex();
+        }
+
+        return {
+            type: Syntax.DoWhileStatement,
+            body: body,
+            test: test
+        };
+    }
+
+    function parseWhileStatement() {
+        var test, body, oldInIteration;
+
+        expectKeyword('while');
+
+        expect('(');
+
+        test = parseExpression();
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        return {
+            type: Syntax.WhileStatement,
+            test: test,
+            body: body
+        };
+    }
+
+    function parseForVariableDeclaration() {
+        var token = lex();
+
+        return {
+            type: Syntax.VariableDeclaration,
+            declarations: parseVariableDeclarationList(),
+            kind: token.value
+        };
+    }
+
+    function parseForStatement() {
+        var init, test, update, left, right, body, oldInIteration;
+
+        init = test = update = null;
+
+        expectKeyword('for');
+
+        expect('(');
+
+        if (match(';')) {
+            lex();
+        } else {
+            if (matchKeyword('var') || matchKeyword('let')) {
+                state.allowIn = false;
+                init = parseForVariableDeclaration();
+                state.allowIn = true;
+
+                if (init.declarations.length === 1 && matchKeyword('in')) {
+                    lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            } else {
+                state.allowIn = false;
+                init = parseExpression();
+                state.allowIn = true;
+
+                if (matchKeyword('in')) {
+                    // LeftHandSideExpression
+                    if (!isLeftHandSide(init)) {
+                        throwError({}, Messages.InvalidLHSInForIn);
+                    }
+
+                    lex();
+                    left = init;
+                    right = parseExpression();
+                    init = null;
+                }
+            }
+
+            if (typeof left === 'undefined') {
+                expect(';');
+            }
+        }
+
+        if (typeof left === 'undefined') {
+
+            if (!match(';')) {
+                test = parseExpression();
+            }
+            expect(';');
+
+            if (!match(')')) {
+                update = parseExpression();
+            }
+        }
+
+        expect(')');
+
+        oldInIteration = state.inIteration;
+        state.inIteration = true;
+
+        body = parseStatement();
+
+        state.inIteration = oldInIteration;
+
+        if (typeof left === 'undefined') {
+            return {
+                type: Syntax.ForStatement,
+                init: init,
+                test: test,
+                update: update,
+                body: body
+            };
+        }
+
+        return {
+            type: Syntax.ForInStatement,
+            left: left,
+            right: right,
+            body: body,
+            each: false
+        };
+    }
+
+    // 12.7 The continue statement
+
+    function parseContinueStatement() {
+        var token, label = null;
+
+        expectKeyword('continue');
+
+        // Optimize the most common form: 'continue;'.
+        if (source[index] === ';') {
+            lex();
+
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return {
+                type: Syntax.ContinueStatement,
+                label: null
+            };
+        }
+
+        if (peekLineTerminator()) {
+            if (!state.inIteration) {
+                throwError({}, Messages.IllegalContinue);
+            }
+
+            return {
+                type: Syntax.ContinueStatement,
+                label: null
+            };
+        }
+
+        token = lookahead();
+        if (token.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            if (!Object.prototype.hasOwnProperty.call(state.labelSet, label.name)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !state.inIteration) {
+            throwError({}, Messages.IllegalContinue);
+        }
+
+        return {
+            type: Syntax.ContinueStatement,
+            label: label
+        };
+    }
+
+    // 12.8 The break statement
+
+    function parseBreakStatement() {
+        var token, label = null;
+
+        expectKeyword('break');
+
+        // Optimize the most common form: 'break;'.
+        if (source[index] === ';') {
+            lex();
+
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return {
+                type: Syntax.BreakStatement,
+                label: null
+            };
+        }
+
+        if (peekLineTerminator()) {
+            if (!(state.inIteration || state.inSwitch)) {
+                throwError({}, Messages.IllegalBreak);
+            }
+
+            return {
+                type: Syntax.BreakStatement,
+                label: null
+            };
+        }
+
+        token = lookahead();
+        if (token.type === Token.Identifier) {
+            label = parseVariableIdentifier();
+
+            if (!Object.prototype.hasOwnProperty.call(state.labelSet, label.name)) {
+                throwError({}, Messages.UnknownLabel, label.name);
+            }
+        }
+
+        consumeSemicolon();
+
+        if (label === null && !(state.inIteration || state.inSwitch)) {
+            throwError({}, Messages.IllegalBreak);
+        }
+
+        return {
+            type: Syntax.BreakStatement,
+            label: label
+        };
+    }
+
+    // 12.9 The return statement
+
+    function parseReturnStatement() {
+        var token, argument = null;
+
+        expectKeyword('return');
+
+        if (!state.inFunctionBody) {
+            throwErrorTolerant({}, Messages.IllegalReturn);
+        }
+
+        // 'return' followed by a space and an identifier is very common.
+        if (source[index] === ' ') {
+            if (isIdentifierStart(source[index + 1])) {
+                argument = parseExpression();
+                consumeSemicolon();
+                return {
+                    type: Syntax.ReturnStatement,
+                    argument: argument
+                };
+            }
+        }
+
+        if (peekLineTerminator()) {
+            return {
+                type: Syntax.ReturnStatement,
+                argument: null
+            };
+        }
+
+        if (!match(';')) {
+            token = lookahead();
+            if (!match('}') && token.type !== Token.EOF) {
+                argument = parseExpression();
+            }
+        }
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ReturnStatement,
+            argument: argument
+        };
+    }
+
+    // 12.10 The with statement
+
+    function parseWithStatement() {
+        var object, body;
+
+        if (strict) {
+            throwErrorTolerant({}, Messages.StrictModeWith);
+        }
+
+        expectKeyword('with');
+
+        expect('(');
+
+        object = parseExpression();
+
+        expect(')');
+
+        body = parseStatement();
+
+        return {
+            type: Syntax.WithStatement,
+            object: object,
+            body: body
+        };
+    }
+
+    // 12.10 The swith statement
+
+    function parseSwitchCase() {
+        var test,
+            consequent = [],
+            statement;
+
+        if (matchKeyword('default')) {
+            lex();
+            test = null;
+        } else {
+            expectKeyword('case');
+            test = parseExpression();
+        }
+        expect(':');
+
+        while (index < length) {
+            if (match('}') || matchKeyword('default') || matchKeyword('case')) {
+                break;
+            }
+            statement = parseStatement();
+            if (typeof statement === 'undefined') {
+                break;
+            }
+            consequent.push(statement);
+        }
+
+        return {
+            type: Syntax.SwitchCase,
+            test: test,
+            consequent: consequent
+        };
+    }
+
+    function parseSwitchStatement() {
+        var discriminant, cases, clause, oldInSwitch, defaultFound;
+
+        expectKeyword('switch');
+
+        expect('(');
+
+        discriminant = parseExpression();
+
+        expect(')');
+
+        expect('{');
+
+        if (match('}')) {
+            lex();
+            return {
+                type: Syntax.SwitchStatement,
+                discriminant: discriminant
+            };
+        }
+
+        cases = [];
+
+        oldInSwitch = state.inSwitch;
+        state.inSwitch = true;
+        defaultFound = false;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            clause = parseSwitchCase();
+            if (clause.test === null) {
+                if (defaultFound) {
+                    throwError({}, Messages.MultipleDefaultsInSwitch);
+                }
+                defaultFound = true;
+            }
+            cases.push(clause);
+        }
+
+        state.inSwitch = oldInSwitch;
+
+        expect('}');
+
+        return {
+            type: Syntax.SwitchStatement,
+            discriminant: discriminant,
+            cases: cases
+        };
+    }
+
+    // 12.13 The throw statement
+
+    function parseThrowStatement() {
+        var argument;
+
+        expectKeyword('throw');
+
+        if (peekLineTerminator()) {
+            throwError({}, Messages.NewlineAfterThrow);
+        }
+
+        argument = parseExpression();
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ThrowStatement,
+            argument: argument
+        };
+    }
+
+    // 12.14 The try statement
+
+    function parseCatchClause() {
+        var param;
+
+        expectKeyword('catch');
+
+        expect('(');
+        if (!match(')')) {
+            param = parseExpression();
+            // 12.14.1
+            if (strict && param.type === Syntax.Identifier && isRestrictedWord(param.name)) {
+                throwErrorTolerant({}, Messages.StrictCatchVariable);
+            }
+        }
+        expect(')');
+
+        return {
+            type: Syntax.CatchClause,
+            param: param,
+            body: parseBlock()
+        };
+    }
+
+    function parseTryStatement() {
+        var block, handlers = [], finalizer = null;
+
+        expectKeyword('try');
+
+        block = parseBlock();
+
+        if (matchKeyword('catch')) {
+            handlers.push(parseCatchClause());
+        }
+
+        if (matchKeyword('finally')) {
+            lex();
+            finalizer = parseBlock();
+        }
+
+        if (handlers.length === 0 && !finalizer) {
+            throwError({}, Messages.NoCatchOrFinally);
+        }
+
+        return {
+            type: Syntax.TryStatement,
+            block: block,
+            guardedHandlers: [],
+            handlers: handlers,
+            finalizer: finalizer
+        };
+    }
+
+    // 12.15 The debugger statement
+
+    function parseDebuggerStatement() {
+        expectKeyword('debugger');
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.DebuggerStatement
+        };
+    }
+
+    // 12 Statements
+
+    function parseStatement() {
+        var token = lookahead(),
+            expr,
+            labeledBody;
+
+        if (token.type === Token.EOF) {
+            throwUnexpected(token);
+        }
+
+        if (token.type === Token.Punctuator) {
+            switch (token.value) {
+            case ';':
+                return parseEmptyStatement();
+            case '{':
+                return parseBlock();
+            case '(':
+                return parseExpressionStatement();
+            default:
+                break;
+            }
+        }
+
+        if (token.type === Token.Keyword) {
+            switch (token.value) {
+            case 'break':
+                return parseBreakStatement();
+            case 'continue':
+                return parseContinueStatement();
+            case 'debugger':
+                return parseDebuggerStatement();
+            case 'do':
+                return parseDoWhileStatement();
+            case 'for':
+                return parseForStatement();
+            case 'function':
+                return parseFunctionDeclaration();
+            case 'if':
+                return parseIfStatement();
+            case 'return':
+                return parseReturnStatement();
+            case 'switch':
+                return parseSwitchStatement();
+            case 'throw':
+                return parseThrowStatement();
+            case 'try':
+                return parseTryStatement();
+            case 'var':
+                return parseVariableStatement();
+            case 'while':
+                return parseWhileStatement();
+            case 'with':
+                return parseWithStatement();
+            default:
+                break;
+            }
+        }
+
+        expr = parseExpression();
+
+        // 12.12 Labelled Statements
+        if ((expr.type === Syntax.Identifier) && match(':')) {
+            lex();
+
+            if (Object.prototype.hasOwnProperty.call(state.labelSet, expr.name)) {
+                throwError({}, Messages.Redeclaration, 'Label', expr.name);
+            }
+
+            state.labelSet[expr.name] = true;
+            labeledBody = parseStatement();
+            delete state.labelSet[expr.name];
+
+            return {
+                type: Syntax.LabeledStatement,
+                label: expr,
+                body: labeledBody
+            };
+        }
+
+        consumeSemicolon();
+
+        return {
+            type: Syntax.ExpressionStatement,
+            expression: expr
+        };
+    }
+
+    // 13 Function Definition
+
+    function parseFunctionSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted,
+            oldLabelSet, oldInIteration, oldInSwitch, oldInFunctionBody;
+
+        expect('{');
+
+        while (index < length) {
+            token = lookahead();
+            if (token.type !== Token.StringLiteral) {
+                break;
+            }
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = sliceSource(token.range[0] + 1, token.range[1] - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        oldLabelSet = state.labelSet;
+        oldInIteration = state.inIteration;
+        oldInSwitch = state.inSwitch;
+        oldInFunctionBody = state.inFunctionBody;
+
+        state.labelSet = {};
+        state.inIteration = false;
+        state.inSwitch = false;
+        state.inFunctionBody = true;
+
+        while (index < length) {
+            if (match('}')) {
+                break;
+            }
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+
+        expect('}');
+
+        state.labelSet = oldLabelSet;
+        state.inIteration = oldInIteration;
+        state.inSwitch = oldInSwitch;
+        state.inFunctionBody = oldInFunctionBody;
+
+        return {
+            type: Syntax.BlockStatement,
+            body: sourceElements
+        };
+    }
+
+    function parseFunctionDeclaration() {
+        var id, param, params = [], body, token, stricted, firstRestricted, message, previousStrict, paramSet;
+
+        expectKeyword('function');
+        token = lookahead();
+        id = parseVariableIdentifier();
+        if (strict) {
+            if (isRestrictedWord(token.value)) {
+                throwErrorTolerant(token, Messages.StrictFunctionName);
+            }
+        } else {
+            if (isRestrictedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictFunctionName;
+            } else if (isStrictModeReservedWord(token.value)) {
+                firstRestricted = token;
+                message = Messages.StrictReservedWord;
+            }
+        }
+
+        expect('(');
+
+        if (!match(')')) {
+            paramSet = {};
+            while (index < length) {
+                token = lookahead();
+                param = parseVariableIdentifier();
+                if (strict) {
+                    if (isRestrictedWord(token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamName;
+                    }
+                    if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                } else if (!firstRestricted) {
+                    if (isRestrictedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamName;
+                    } else if (isStrictModeReservedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictReservedWord;
+                    } else if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                }
+                params.push(param);
+                paramSet[param.name] = true;
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && stricted) {
+            throwErrorTolerant(stricted, message);
+        }
+        strict = previousStrict;
+
+        return {
+            type: Syntax.FunctionDeclaration,
+            id: id,
+            params: params,
+            defaults: [],
+            body: body,
+            rest: null,
+            generator: false,
+            expression: false
+        };
+    }
+
+    function parseFunctionExpression() {
+        var token, id = null, stricted, firstRestricted, message, param, params = [], body, previousStrict, paramSet;
+
+        expectKeyword('function');
+
+        if (!match('(')) {
+            token = lookahead();
+            id = parseVariableIdentifier();
+            if (strict) {
+                if (isRestrictedWord(token.value)) {
+                    throwErrorTolerant(token, Messages.StrictFunctionName);
+                }
+            } else {
+                if (isRestrictedWord(token.value)) {
+                    firstRestricted = token;
+                    message = Messages.StrictFunctionName;
+                } else if (isStrictModeReservedWord(token.value)) {
+                    firstRestricted = token;
+                    message = Messages.StrictReservedWord;
+                }
+            }
+        }
+
+        expect('(');
+
+        if (!match(')')) {
+            paramSet = {};
+            while (index < length) {
+                token = lookahead();
+                param = parseVariableIdentifier();
+                if (strict) {
+                    if (isRestrictedWord(token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamName;
+                    }
+                    if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        stricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                } else if (!firstRestricted) {
+                    if (isRestrictedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamName;
+                    } else if (isStrictModeReservedWord(token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictReservedWord;
+                    } else if (Object.prototype.hasOwnProperty.call(paramSet, token.value)) {
+                        firstRestricted = token;
+                        message = Messages.StrictParamDupe;
+                    }
+                }
+                params.push(param);
+                paramSet[param.name] = true;
+                if (match(')')) {
+                    break;
+                }
+                expect(',');
+            }
+        }
+
+        expect(')');
+
+        previousStrict = strict;
+        body = parseFunctionSourceElements();
+        if (strict && firstRestricted) {
+            throwError(firstRestricted, message);
+        }
+        if (strict && stricted) {
+            throwErrorTolerant(stricted, message);
+        }
+        strict = previousStrict;
+
+        return {
+            type: Syntax.FunctionExpression,
+            id: id,
+            params: params,
+            defaults: [],
+            body: body,
+            rest: null,
+            generator: false,
+            expression: false
+        };
+    }
+
+    // 14 Program
+
+    function parseSourceElement() {
+        var token = lookahead();
+
+        if (token.type === Token.Keyword) {
+            switch (token.value) {
+            case 'const':
+            case 'let':
+                return parseConstLetDeclaration(token.value);
+            case 'function':
+                return parseFunctionDeclaration();
+            default:
+                return parseStatement();
+            }
+        }
+
+        if (token.type !== Token.EOF) {
+            return parseStatement();
+        }
+    }
+
+    function parseSourceElements() {
+        var sourceElement, sourceElements = [], token, directive, firstRestricted;
+
+        while (index < length) {
+            token = lookahead();
+            if (token.type !== Token.StringLiteral) {
+                break;
+            }
+
+            sourceElement = parseSourceElement();
+            sourceElements.push(sourceElement);
+            if (sourceElement.expression.type !== Syntax.Literal) {
+                // this is not directive
+                break;
+            }
+            directive = sliceSource(token.range[0] + 1, token.range[1] - 1);
+            if (directive === 'use strict') {
+                strict = true;
+                if (firstRestricted) {
+                    throwErrorTolerant(firstRestricted, Messages.StrictOctalLiteral);
+                }
+            } else {
+                if (!firstRestricted && token.octal) {
+                    firstRestricted = token;
+                }
+            }
+        }
+
+        while (index < length) {
+            sourceElement = parseSourceElement();
+            if (typeof sourceElement === 'undefined') {
+                break;
+            }
+            sourceElements.push(sourceElement);
+        }
+        return sourceElements;
+    }
+
+    function parseProgram() {
+        var program;
+        strict = false;
+        program = {
+            type: Syntax.Program,
+            body: parseSourceElements()
+        };
+        return program;
+    }
+
+    // The following functions are needed only when the option to preserve
+    // the comments is active.
+
+    function addComment(type, value, start, end, loc) {
+        assert(typeof start === 'number', 'Comment must have valid position');
+
+        // Because the way the actual token is scanned, often the comments
+        // (if any) are skipped twice during the lexical analysis.
+        // Thus, we need to skip adding a comment if the comment array already
+        // handled it.
+        if (extra.comments.length > 0) {
+            if (extra.comments[extra.comments.length - 1].range[1] > start) {
+                return;
+            }
+        }
+
+        extra.comments.push({
+            type: type,
+            value: value,
+            range: [start, end],
+            loc: loc
+        });
+    }
+
+    function scanComment() {
+        var comment, ch, loc, start, blockComment, lineComment;
+
+        comment = '';
+        blockComment = false;
+        lineComment = false;
+
+        while (index < length) {
+            ch = source[index];
+
+            if (lineComment) {
+                ch = nextChar();
+                if (isLineTerminator(ch)) {
+                    loc.end = {
+                        line: lineNumber,
+                        column: index - lineStart - 1
+                    };
+                    lineComment = false;
+                    addComment('Line', comment, start, index - 1, loc);
+                    if (ch === '\r' && source[index] === '\n') {
+                        ++index;
+                    }
+                    ++lineNumber;
+                    lineStart = index;
+                    comment = '';
+                } else if (index >= length) {
+                    lineComment = false;
+                    comment += ch;
+                    loc.end = {
+                        line: lineNumber,
+                        column: length - lineStart
+                    };
+                    addComment('Line', comment, start, length, loc);
+                } else {
+                    comment += ch;
+                }
+            } else if (blockComment) {
+                if (isLineTerminator(ch)) {
+                    if (ch === '\r' && source[index + 1] === '\n') {
+                        ++index;
+                        comment += '\r\n';
+                    } else {
+                        comment += ch;
+                    }
+                    ++lineNumber;
+                    ++index;
+                    lineStart = index;
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    ch = nextChar();
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                    comment += ch;
+                    if (ch === '*') {
+                        ch = source[index];
+                        if (ch === '/') {
+                            comment = comment.substr(0, comment.length - 1);
+                            blockComment = false;
+                            ++index;
+                            loc.end = {
+                                line: lineNumber,
+                                column: index - lineStart
+                            };
+                            addComment('Block', comment, start, index, loc);
+                            comment = '';
+                        }
+                    }
+                }
+            } else if (ch === '/') {
+                ch = source[index + 1];
+                if (ch === '/') {
+                    loc = {
+                        start: {
+                            line: lineNumber,
+                            column: index - lineStart
+                        }
+                    };
+                    start = index;
+                    index += 2;
+                    lineComment = true;
+                    if (index >= length) {
+                        loc.end = {
+                            line: lineNumber,
+                            column: index - lineStart
+                        };
+                        lineComment = false;
+                        addComment('Line', comment, start, index, loc);
+                    }
+                } else if (ch === '*') {
+                    start = index;
+                    index += 2;
+                    blockComment = true;
+                    loc = {
+                        start: {
+                            line: lineNumber,
+                            column: index - lineStart - 2
+                        }
+                    };
+                    if (index >= length) {
+                        throwError({}, Messages.UnexpectedToken, 'ILLEGAL');
+                    }
+                } else {
+                    break;
+                }
+            } else if (isWhiteSpace(ch)) {
+                ++index;
+            } else if (isLineTerminator(ch)) {
+                ++index;
+                if (ch ===  '\r' && source[index] === '\n') {
+                    ++index;
+                }
+                ++lineNumber;
+                lineStart = index;
+            } else {
+                break;
+            }
+        }
+    }
+
+    function filterCommentLocation() {
+        var i, entry, comment, comments = [];
+
+        for (i = 0; i < extra.comments.length; ++i) {
+            entry = extra.comments[i];
+            comment = {
+                type: entry.type,
+                value: entry.value
+            };
+            if (extra.range) {
+                comment.range = entry.range;
+            }
+            if (extra.loc) {
+                comment.loc = entry.loc;
+            }
+            comments.push(comment);
+        }
+
+        extra.comments = comments;
+    }
+
+    function collectToken() {
+        var start, loc, token, range, value;
+
+        skipComment();
+        start = index;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        token = extra.advance();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        if (token.type !== Token.EOF) {
+            range = [token.range[0], token.range[1]];
+            value = sliceSource(token.range[0], token.range[1]);
+            extra.tokens.push({
+                type: TokenName[token.type],
+                value: value,
+                range: range,
+                loc: loc
+            });
+        }
+
+        return token;
+    }
+
+    function collectRegex() {
+        var pos, loc, regex, token;
+
+        skipComment();
+
+        pos = index;
+        loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        regex = extra.scanRegExp();
+        loc.end = {
+            line: lineNumber,
+            column: index - lineStart
+        };
+
+        // Pop the previous token, which is likely '/' or '/='
+        if (extra.tokens.length > 0) {
+            token = extra.tokens[extra.tokens.length - 1];
+            if (token.range[0] === pos && token.type === 'Punctuator') {
+                if (token.value === '/' || token.value === '/=') {
+                    extra.tokens.pop();
+                }
+            }
+        }
+
+        extra.tokens.push({
+            type: 'RegularExpression',
+            value: regex.literal,
+            range: [pos, index],
+            loc: loc
+        });
+
+        return regex;
+    }
+
+    function filterTokenLocation() {
+        var i, entry, token, tokens = [];
+
+        for (i = 0; i < extra.tokens.length; ++i) {
+            entry = extra.tokens[i];
+            token = {
+                type: entry.type,
+                value: entry.value
+            };
+            if (extra.range) {
+                token.range = entry.range;
+            }
+            if (extra.loc) {
+                token.loc = entry.loc;
+            }
+            tokens.push(token);
+        }
+
+        extra.tokens = tokens;
+    }
+
+    function createLiteral(token) {
+        return {
+            type: Syntax.Literal,
+            value: token.value
+        };
+    }
+
+    function createRawLiteral(token) {
+        return {
+            type: Syntax.Literal,
+            value: token.value,
+            raw: sliceSource(token.range[0], token.range[1])
+        };
+    }
+
+    function createLocationMarker() {
+        var marker = {};
+
+        marker.range = [index, index];
+        marker.loc = {
+            start: {
+                line: lineNumber,
+                column: index - lineStart
+            },
+            end: {
+                line: lineNumber,
+                column: index - lineStart
+            }
+        };
+
+        marker.end = function () {
+            this.range[1] = index;
+            this.loc.end.line = lineNumber;
+            this.loc.end.column = index - lineStart;
+        };
+
+        marker.apply = function (node) {
+            if (extra.range) {
+                node.range = [this.range[0], this.range[1]];
+            }
+            if (extra.loc) {
+                node.loc = {
+                    start: {
+                        line: this.loc.start.line,
+                        column: this.loc.start.column
+                    },
+                    end: {
+                        line: this.loc.end.line,
+                        column: this.loc.end.column
+                    }
+                };
+            }
+        };
+
+        return marker;
+    }
+
+    function trackLeftHandSideExpression() {
+        var marker, expr;
+
+        skipComment();
+        marker = createLocationMarker();
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[')) {
+            if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            }
+        }
+
+        return expr;
+    }
+
+    function trackLeftHandSideExpressionAllowCall() {
+        var marker, expr;
+
+        skipComment();
+        marker = createLocationMarker();
+
+        expr = matchKeyword('new') ? parseNewExpression() : parsePrimaryExpression();
+
+        while (match('.') || match('[') || match('(')) {
+            if (match('(')) {
+                expr = {
+                    type: Syntax.CallExpression,
+                    callee: expr,
+                    'arguments': parseArguments()
+                };
+                marker.end();
+                marker.apply(expr);
+            } else if (match('[')) {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: true,
+                    object: expr,
+                    property: parseComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            } else {
+                expr = {
+                    type: Syntax.MemberExpression,
+                    computed: false,
+                    object: expr,
+                    property: parseNonComputedMember()
+                };
+                marker.end();
+                marker.apply(expr);
+            }
+        }
+
+        return expr;
+    }
+
+    function wrapTrackingFunction(range, loc) {
+
+        return function (parseFunction) {
+
+            function isBinary(node) {
+                return node.type === Syntax.LogicalExpression ||
+                    node.type === Syntax.BinaryExpression;
+            }
+
+            function visit(node) {
+                if (isBinary(node.left)) {
+                    visit(node.left);
+                }
+                if (isBinary(node.right)) {
+                    visit(node.right);
+                }
+
+                if (range && typeof node.range === 'undefined') {
+                    node.range = [node.left.range[0], node.right.range[1]];
+                }
+                if (loc && typeof node.loc === 'undefined') {
+                    node.loc = {
+                        start: node.left.loc.start,
+                        end: node.right.loc.end
+                    };
+                }
+            }
+
+            return function () {
+                var marker, node;
+
+                skipComment();
+
+                marker = createLocationMarker();
+                node = parseFunction.apply(null, arguments);
+                marker.end();
+
+                if (range && typeof node.range === 'undefined') {
+                    marker.apply(node);
+                }
+
+                if (loc && typeof node.loc === 'undefined') {
+                    marker.apply(node);
+                }
+
+                if (isBinary(node)) {
+                    visit(node);
+                }
+
+                return node;
+            };
+        };
+    }
+
+    function patch() {
+
+        var wrapTracking;
+
+        if (extra.comments) {
+            extra.skipComment = skipComment;
+            skipComment = scanComment;
+        }
+
+        if (extra.raw) {
+            extra.createLiteral = createLiteral;
+            createLiteral = createRawLiteral;
+        }
+
+        if (extra.range || extra.loc) {
+
+            extra.parseLeftHandSideExpression = parseLeftHandSideExpression;
+            extra.parseLeftHandSideExpressionAllowCall = parseLeftHandSideExpressionAllowCall;
+            parseLeftHandSideExpression = trackLeftHandSideExpression;
+            parseLeftHandSideExpressionAllowCall = trackLeftHandSideExpressionAllowCall;
+
+            wrapTracking = wrapTrackingFunction(extra.range, extra.loc);
+
+            extra.parseAdditiveExpression = parseAdditiveExpression;
+            extra.parseAssignmentExpression = parseAssignmentExpression;
+            extra.parseBitwiseANDExpression = parseBitwiseANDExpression;
+            extra.parseBitwiseORExpression = parseBitwiseORExpression;
+            extra.parseBitwiseXORExpression = parseBitwiseXORExpression;
+            extra.parseBlock = parseBlock;
+            extra.parseFunctionSourceElements = parseFunctionSourceElements;
+            extra.parseCatchClause = parseCatchClause;
+            extra.parseComputedMember = parseComputedMember;
+            extra.parseConditionalExpression = parseConditionalExpression;
+            extra.parseConstLetDeclaration = parseConstLetDeclaration;
+            extra.parseEqualityExpression = parseEqualityExpression;
+            extra.parseExpression = parseExpression;
+            extra.parseForVariableDeclaration = parseForVariableDeclaration;
+            extra.parseFunctionDeclaration = parseFunctionDeclaration;
+            extra.parseFunctionExpression = parseFunctionExpression;
+            extra.parseLeftHandSideExpression = parseLeftHandSideExpression;
+            extra.parseLeftHandSideExpressionAllowCall = parseLeftHandSideExpressionAllowCall;
+            extra.parseLogicalANDExpression = parseLogicalANDExpression;
+            extra.parseLogicalORExpression = parseLogicalORExpression;
+            extra.parseMultiplicativeExpression = parseMultiplicativeExpression;
+            extra.parseNewExpression = parseNewExpression;
+            extra.parseNonComputedProperty = parseNonComputedProperty;
+            extra.parseObjectProperty = parseObjectProperty;
+            extra.parseObjectPropertyKey = parseObjectPropertyKey;
+            extra.parsePostfixExpression = parsePostfixExpression;
+            extra.parsePrimaryExpression = parsePrimaryExpression;
+            extra.parseProgram = parseProgram;
+            extra.parsePropertyFunction = parsePropertyFunction;
+            extra.parseRelationalExpression = parseRelationalExpression;
+            extra.parseStatement = parseStatement;
+            extra.parseShiftExpression = parseShiftExpression;
+            extra.parseSwitchCase = parseSwitchCase;
+            extra.parseUnaryExpression = parseUnaryExpression;
+            extra.parseVariableDeclaration = parseVariableDeclaration;
+            extra.parseVariableIdentifier = parseVariableIdentifier;
+
+            parseAdditiveExpression = wrapTracking(extra.parseAdditiveExpression);
+            parseAssignmentExpression = wrapTracking(extra.parseAssignmentExpression);
+            parseBitwiseANDExpression = wrapTracking(extra.parseBitwiseANDExpression);
+            parseBitwiseORExpression = wrapTracking(extra.parseBitwiseORExpression);
+            parseBitwiseXORExpression = wrapTracking(extra.parseBitwiseXORExpression);
+            parseBlock = wrapTracking(extra.parseBlock);
+            parseFunctionSourceElements = wrapTracking(extra.parseFunctionSourceElements);
+            parseCatchClause = wrapTracking(extra.parseCatchClause);
+            parseComputedMember = wrapTracking(extra.parseComputedMember);
+            parseConditionalExpression = wrapTracking(extra.parseConditionalExpression);
+            parseConstLetDeclaration = wrapTracking(extra.parseConstLetDeclaration);
+            parseEqualityExpression = wrapTracking(extra.parseEqualityExpression);
+            parseExpression = wrapTracking(extra.parseExpression);
+            parseForVariableDeclaration = wrapTracking(extra.parseForVariableDeclaration);
+            parseFunctionDeclaration = wrapTracking(extra.parseFunctionDeclaration);
+            parseFunctionExpression = wrapTracking(extra.parseFunctionExpression);
+            parseLeftHandSideExpression = wrapTracking(parseLeftHandSideExpression);
+            parseLeftHandSideExpressionAllowCall = wrapTracking(parseLeftHandSideExpressionAllowCall);
+            parseLogicalANDExpression = wrapTracking(extra.parseLogicalANDExpression);
+            parseLogicalORExpression = wrapTracking(extra.parseLogicalORExpression);
+            parseMultiplicativeExpression = wrapTracking(extra.parseMultiplicativeExpression);
+            parseNewExpression = wrapTracking(extra.parseNewExpression);
+            parseNonComputedProperty = wrapTracking(extra.parseNonComputedProperty);
+            parseObjectProperty = wrapTracking(extra.parseObjectProperty);
+            parseObjectPropertyKey = wrapTracking(extra.parseObjectPropertyKey);
+            parsePostfixExpression = wrapTracking(extra.parsePostfixExpression);
+            parsePrimaryExpression = wrapTracking(extra.parsePrimaryExpression);
+            parseProgram = wrapTracking(extra.parseProgram);
+            parsePropertyFunction = wrapTracking(extra.parsePropertyFunction);
+            parseRelationalExpression = wrapTracking(extra.parseRelationalExpression);
+            parseStatement = wrapTracking(extra.parseStatement);
+            parseShiftExpression = wrapTracking(extra.parseShiftExpression);
+            parseSwitchCase = wrapTracking(extra.parseSwitchCase);
+            parseUnaryExpression = wrapTracking(extra.parseUnaryExpression);
+            parseVariableDeclaration = wrapTracking(extra.parseVariableDeclaration);
+            parseVariableIdentifier = wrapTracking(extra.parseVariableIdentifier);
+        }
+
+        if (typeof extra.tokens !== 'undefined') {
+            extra.advance = advance;
+            extra.scanRegExp = scanRegExp;
+
+            advance = collectToken;
+            scanRegExp = collectRegex;
+        }
+    }
+
+    function unpatch() {
+        if (typeof extra.skipComment === 'function') {
+            skipComment = extra.skipComment;
+        }
+
+        if (extra.raw) {
+            createLiteral = extra.createLiteral;
+        }
+
+        if (extra.range || extra.loc) {
+            parseAdditiveExpression = extra.parseAdditiveExpression;
+            parseAssignmentExpression = extra.parseAssignmentExpression;
+            parseBitwiseANDExpression = extra.parseBitwiseANDExpression;
+            parseBitwiseORExpression = extra.parseBitwiseORExpression;
+            parseBitwiseXORExpression = extra.parseBitwiseXORExpression;
+            parseBlock = extra.parseBlock;
+            parseFunctionSourceElements = extra.parseFunctionSourceElements;
+            parseCatchClause = extra.parseCatchClause;
+            parseComputedMember = extra.parseComputedMember;
+            parseConditionalExpression = extra.parseConditionalExpression;
+            parseConstLetDeclaration = extra.parseConstLetDeclaration;
+            parseEqualityExpression = extra.parseEqualityExpression;
+            parseExpression = extra.parseExpression;
+            parseForVariableDeclaration = extra.parseForVariableDeclaration;
+            parseFunctionDeclaration = extra.parseFunctionDeclaration;
+            parseFunctionExpression = extra.parseFunctionExpression;
+            parseLeftHandSideExpression = extra.parseLeftHandSideExpression;
+            parseLeftHandSideExpressionAllowCall = extra.parseLeftHandSideExpressionAllowCall;
+            parseLogicalANDExpression = extra.parseLogicalANDExpression;
+            parseLogicalORExpression = extra.parseLogicalORExpression;
+            parseMultiplicativeExpression = extra.parseMultiplicativeExpression;
+            parseNewExpression = extra.parseNewExpression;
+            parseNonComputedProperty = extra.parseNonComputedProperty;
+            parseObjectProperty = extra.parseObjectProperty;
+            parseObjectPropertyKey = extra.parseObjectPropertyKey;
+            parsePrimaryExpression = extra.parsePrimaryExpression;
+            parsePostfixExpression = extra.parsePostfixExpression;
+            parseProgram = extra.parseProgram;
+            parsePropertyFunction = extra.parsePropertyFunction;
+            parseRelationalExpression = extra.parseRelationalExpression;
+            parseStatement = extra.parseStatement;
+            parseShiftExpression = extra.parseShiftExpression;
+            parseSwitchCase = extra.parseSwitchCase;
+            parseUnaryExpression = extra.parseUnaryExpression;
+            parseVariableDeclaration = extra.parseVariableDeclaration;
+            parseVariableIdentifier = extra.parseVariableIdentifier;
+        }
+
+        if (typeof extra.scanRegExp === 'function') {
+            advance = extra.advance;
+            scanRegExp = extra.scanRegExp;
+        }
+    }
+
+    function stringToArray(str) {
+        var length = str.length,
+            result = [],
+            i;
+        for (i = 0; i < length; ++i) {
+            result[i] = str.charAt(i);
+        }
+        return result;
+    }
+
+    function parse(code, options) {
+        var program, toString;
+
+        toString = String;
+        if (typeof code !== 'string' && !(code instanceof String)) {
+            code = toString(code);
+        }
+
+        source = code;
+        index = 0;
+        lineNumber = (source.length > 0) ? 1 : 0;
+        lineStart = 0;
+        length = source.length;
+        buffer = null;
+        state = {
+            allowIn: true,
+            labelSet: {},
+            lastParenthesized: null,
+            inFunctionBody: false,
+            inIteration: false,
+            inSwitch: false
+        };
+
+        extra = {};
+        if (typeof options !== 'undefined') {
+            extra.range = (typeof options.range === 'boolean') && options.range;
+            extra.loc = (typeof options.loc === 'boolean') && options.loc;
+            extra.raw = (typeof options.raw === 'boolean') && options.raw;
+            if (typeof options.tokens === 'boolean' && options.tokens) {
+                extra.tokens = [];
+            }
+            if (typeof options.comment === 'boolean' && options.comment) {
+                extra.comments = [];
+            }
+            if (typeof options.tolerant === 'boolean' && options.tolerant) {
+                extra.errors = [];
+            }
+        }
+
+        if (length > 0) {
+            if (typeof source[0] === 'undefined') {
+                // Try first to convert to a string. This is good as fast path
+                // for old IE which understands string indexing for string
+                // literals only and not for string object.
+                if (code instanceof String) {
+                    source = code.valueOf();
+                }
+
+                // Force accessing the characters via an array.
+                if (typeof source[0] === 'undefined') {
+                    source = stringToArray(code);
+                }
+            }
+        }
+
+        patch();
+        try {
+            program = parseProgram();
+            if (typeof extra.comments !== 'undefined') {
+                filterCommentLocation();
+                program.comments = extra.comments;
+            }
+            if (typeof extra.tokens !== 'undefined') {
+                filterTokenLocation();
+                program.tokens = extra.tokens;
+            }
+            if (typeof extra.errors !== 'undefined') {
+                program.errors = extra.errors;
+            }
+        } catch (e) {
+            throw e;
+        } finally {
+            unpatch();
+            extra = {};
+        }
+
+        return program;
+    }
+
+    // Sync with package.json.
+    exports.version = '1.0.0-dev';
+
+    exports.parse = parse;
+
+    // Deep copy.
+    exports.Syntax = (function () {
+        var name, types = {};
+
+        if (typeof Object.create === 'function') {
+            types = Object.create(null);
+        }
+
+        for (name in Syntax) {
+            if (Syntax.hasOwnProperty(name)) {
+                types[name] = Syntax[name];
+            }
+        }
+
+        if (typeof Object.freeze === 'function') {
+            Object.freeze(types);
+        }
+
+        return types;
+    }());
+
+}));
+/* vim: set sw=4 ts=4 et tw=80 : */
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/lib/falafel.js b/v3/js/togetherjs/togetherjs/libs/walkabout/lib/falafel.js
new file mode 100644
index 000000000..1805fa4d7
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/lib/falafel.js
@@ -0,0 +1,100 @@
+var _tmpModule = {exports: {}};
+(function (module) {
+
+var parse = esprima.parse;
+var objectKeys = Object.keys || function (obj) {
+    var keys = [];
+    for (var key in obj) keys.push(key);
+    return keys;
+};
+var forEach = function (xs, fn) {
+    if (xs.forEach) return xs.forEach(fn);
+    for (var i = 0; i < xs.length; i++) {
+        fn.call(xs, xs[i], i, xs);
+    }
+};
+
+var isArray = Array.isArray || function (xs) {
+    return Object.prototype.toString.call(xs) === '[object Array]';
+};
+
+module.exports = function (src, opts, fn) {
+    if (typeof opts === 'function') {
+        fn = opts;
+        opts = {};
+    }
+    if (typeof src === 'object') {
+        opts = src;
+        src = opts.source;
+        delete opts.source;
+    }
+    src = src || opts.source;
+    opts.range = true;
+    if (typeof src !== 'string') src = String(src);
+
+    var ast = parse(src, opts);
+
+    var result = {
+        chunks : src.split(''),
+        toString : function () { return result.chunks.join('') },
+        inspect : function () { return result.toString() }
+    };
+    var index = 0;
+
+    (function walk (node, parent) {
+        insertHelpers(node, parent, result.chunks);
+
+        forEach(objectKeys(node), function (key) {
+            if (key === 'parent') return;
+
+            var child = node[key];
+            if (isArray(child)) {
+                forEach(child, function (c) {
+                    if (c && typeof c.type === 'string') {
+                        walk(c, node);
+                    }
+                });
+            }
+            else if (child && typeof child.type === 'string') {
+                insertHelpers(child, node, result.chunks);
+                walk(child, node);
+            }
+        });
+        fn(node);
+    })(ast, undefined);
+
+    return result;
+};
+
+function insertHelpers (node, parent, chunks) {
+    if (!node.range) return;
+
+    node.parent = parent;
+
+    node.source = function () {
+        return chunks.slice(
+            node.range[0], node.range[1]
+        ).join('');
+    };
+
+    if (node.update && typeof node.update === 'object') {
+        var prev = node.update;
+        forEach(objectKeys(prev), function (key) {
+            update[key] = prev[key];
+        });
+        node.update = update;
+    }
+    else {
+        node.update = update;
+    }
+
+    function update (s) {
+        chunks[node.range[0]] = s;
+        for (var i = node.range[0] + 1; i < node.range[1]; i++) {
+            chunks[i] = '';
+        }
+    };
+}
+
+})(_tmpModule);
+var falafel = _tmpModule.exports;
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/node-proxy.js b/v3/js/togetherjs/togetherjs/libs/walkabout/node-proxy.js
new file mode 100644
index 000000000..00048009d
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/node-proxy.js
@@ -0,0 +1,219 @@
+const dns = require("dns");
+const http = require("http");
+const fs = require("fs");
+const walkabout = require("./walkabout.js");
+const parseUrl = require("url").parse;
+
+var IPs = {
+  localhost: ["127.0.0.1"]
+};
+
+var PortAliases = {};
+
+function loadEtcHosts(callback) {
+  fs.readFile("/etc/hosts", "UTF-8", function (error, text) {
+    if (error) {
+      console.log("Error reading /etc/hosts:", error);
+      return;
+    }
+    var lines = text.split(/\n/g);
+    lines.forEach(function (l) {
+      l = l.replace(/^\s*/, "");
+      if (! l) {
+        // empty line
+        return;
+      }
+      if (l.search(/^\#/) != -1) {
+        // comment
+        return;
+      }
+      var parts = l.split(/\s+/g);
+      if (parts[0] == "255.255.255.255" || parts[0].indexOf(":") != -1 ||
+          parts[0] == "127.0.0.1") {
+        return;
+      }
+      for (var i=1; i<parts.length; i++) {
+        if (! parts[i]) {
+          continue;
+        }
+        if (parts[i] in IPs) {
+          if (IPs[parts[i]].indexOf(parts[0]) == -1) {
+            IPs[parts[i]].push(parts[0]);
+          }
+        } else {
+          IPs[parts[i]] = [parts[0]];
+        }
+      }
+    });
+    if (callback) {
+      callback();
+    }
+  });
+}
+
+loadEtcHosts();
+
+var server = http.createServer(function(request, response) {
+  var host = request.headers["host"];
+  var port = 80;
+  if (parseUrl(request.url).pathname == "/__walkabout__.js") {
+    fs.readFile(__dirname + "/walkabout.js", function (error, code) {
+      if (error) {
+        write500(error, response);
+        return;
+      }
+      response.writeHead(200, {"Content-Type": "text/javascript"});
+      response.end(code);
+    });
+    return;
+  }
+  if (host.indexOf(":") != -1) {
+    port = host.substr(host.indexOf(":") + 1);
+    port = parseInt(port, 10);
+    host = host.replace(/\:.*$/, "");
+  }
+  if (host in PortAliases) {
+    port = PortAliases[host];
+  }
+  if (! IPs[host]) {
+    request.pause();
+    dns.resolve4(host, function (error, addresses) {
+      console.log("Resolved host", host, "to", addresses);
+      if (error) {
+        write500(error, response);
+        return;
+      }
+      IPs[host] = addresses;
+      request.resume();
+      forwardRequest(addresses, port, request, response);
+    });
+  } else {
+    forwardRequest(IPs[host], port, request, response);
+  }
+});
+
+var preamble = (
+  '<script>_Walkabout_start_UI = true;_Walkabout_sitewide = true;</script>' +
+  '<script src="/__walkabout__.js"></script>'
+);
+
+var seenForwards = {};
+
+function forwardRequest(addresses, port, request, response) {
+  var address = addresses[Math.floor(Math.random() * addresses.length)];
+  if (! seenForwards[address]) {
+    seenForwards[address] = true;
+    console.log("Forwarding", request.headers.host, "to", address + ":" + port);
+  }
+  // Avoid gzipped responses:
+  delete request.headers["accept-encoding"];
+  delete request.headers["if-modified-since"];
+  delete request.headers["if-not-matches"];
+  delete request.headers["connection"];
+  request.headers["connection"] = "close";
+  var origHost = request.headers.host;
+  request.headers.host = request.headers.host.replace(/:\d+$/, "") + ":" + port;
+  var clientRequest = http.request({
+    hostname: address,
+    port: port,
+    method: request.method,
+    path: request.url,
+    headers: request.headers
+  });
+  clientRequest.on("response", function (clientResponse) {
+    var contentType = clientResponse.headers["content-type"] || "";
+    var isHtml = contentType.indexOf("text/html") != -1;
+    var isJavascript = contentType.indexOf("javascript") != -1;
+    var location = clientResponse.headers["location"];
+    if (location) {
+      clientResponse.location = location.replace(
+        request.headers.host.replace(/:80$/, ""), origHost.replace(/:80$/, ""));
+    }
+    if (isHtml) {
+      var contentLength = clientResponse.headers["content-length"];
+      if (contentLength) {
+        contentLength = parseInt(contentLength, 10);
+        contentLength += preamble.length;
+        clientResponse.headers["content-length"] = contentLength + "";
+      }
+    } else if (isJavascript) {
+      delete clientResponse.headers["content-length"];
+    }
+    response.writeHead(clientResponse.statusCode, clientResponse.headers);
+    var s;
+    if ((! isHtml) && ! isJavascript) {
+      clientResponse.on("data", function (chunk) {
+        response.write(chunk);
+      });
+    } else {
+      s = "";
+      clientResponse.on("data", function (chunk) {
+        s += chunk;
+      });
+    }
+    clientResponse.on("end", function () {
+      if (isHtml) {
+        if (s.search(/^</) == -1) {
+          // Doesn't really look like HTML
+          response.write(s);
+        } else {
+          response.write(translateHtml(s));
+        }
+      } else if (isJavascript) {
+        response.write(translateJavascript(s));
+      }
+      response.end();
+    });
+  });
+  clientRequest.on("error", function (error) {
+    error.stage = "clientRequest";
+    error.headers = clientRequest._headers;
+    write500(error, response);
+  });
+  request.on("data", function (chunk) {
+    clientRequest.write(chunk);
+  });
+  if (! request.ended) {
+    request.on("end", function () {
+      clientRequest.end();
+    });
+  } else {
+    clientRequest.end();
+  }
+}
+
+function translateHtml(s) {
+  var pos = s.search(/<head>/i);
+  if (pos == -1) {
+    return preamble + s;
+  } else {
+    return s.substr(0, pos+6) + preamble + s.substr(pos+6);
+  }
+}
+
+function translateJavascript(s) {
+  return walkabout.rewriteListeners(s) + "";
+}
+
+function write500(error, response) {
+  console.warn("Error:", error);
+  response.writeHead(500, {"Content-Type": "text/plain"});
+  if (typeof error != "string") {
+    error = "\n" + JSON.stringify(error, null, "  ");
+  }
+  response.end("Error: " + error);
+}
+
+var PORT = parseInt(process.env.PORT || 80, 10);
+var BIND = process.env.BIND || "127.0.0.1";
+
+if (process.env.PORT_ALIASES) {
+  process.env.PORT_ALIASES.split(/;/g).forEach(function (part) {
+    part = part.split(/:/);
+    PortAliases[part[0]] = part[1];
+  });
+}
+
+console.log("Serving on", "http://"+BIND+":"+PORT);
+server.listen(PORT, BIND, function () {
+});
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/test_overlap.html b/v3/js/togetherjs/togetherjs/libs/walkabout/test_overlap.html
new file mode 100644
index 000000000..697269cc1
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/test_overlap.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title>Walkabout tests</title>
+    <script src="http://doctestjs.org/doctest.js"></script>
+    <link rel="stylesheet" href="http://doctestjs.org/doctest.css"></script>
+    <!--<script src="doctestjs/doctest.js"></script>-->
+    <script src="walkabout.js"></script>
+  </head>
+  <body class="autodoctest">
+
+    <div>
+      <pre class="commenttest" href="test_overlap.js"></pre>
+    </div>
+
+    <div id="fixture">
+
+      <div id="modal" style="background-color: #99f; opacity: 0.5;">goes on top</div>
+
+      <div id="underlay" style="background-color: #9f9;">goes under</div>
+
+    </div>
+
+  </body>
+</html>
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/test_overlap.js b/v3/js/togetherjs/togetherjs/libs/walkabout/test_overlap.js
new file mode 100644
index 000000000..b8f9d758b
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/test_overlap.js
@@ -0,0 +1,77 @@
+var fixture = document.getElementById("fixture");
+var modal = document.getElementById("modal");
+var underlay = document.getElementById("underlay");
+
+Walkabout.addEventListener(underlay, function (event) {
+  print("clicked");
+}, false);
+
+function show(el) {
+  el.style.display = "";
+}
+
+function hide(el) {
+  el.style.display = "none";
+}
+
+print(Walkabout.visible(modal));
+print(Walkabout.visible(underlay));
+print(Walkabout.clickable(underlay));
+hide(modal);
+print(Walkabout.visible(modal));
+show(modal);
+
+/* =>
+true
+true
+true
+false
+*/
+
+hide(underlay);
+print(Walkabout.clickable(underlay));
+show(underlay);
+
+// => false
+
+modal.style.position = "absolute";
+modal.style.width = "100px";
+modal.style.height = "100px";
+modal.style.top = "0px";
+modal.style.right = "0px";
+modal.style.zIndex = 10;
+underlay.style.position = "absolute";
+underlay.style.width = "90px";
+underlay.style.height = "90px";
+underlay.style.top = "5px";
+underlay.style.right = "5px";
+underlay.style.zIndex = 5;
+
+print(getComputedStyle(modal).getPropertyValue("position"));
+
+// => absolute
+
+var rect = modal.getBoundingClientRect();
+
+print(rect.bottom, rect.top, rect.height);
+print(rect.left, rect.right, rect.width);
+
+/* =>
+100 0 100
+? ? 100
+*/
+
+print(Walkabout.clickable(underlay));
+
+// => false
+
+underlay.style.zIndex = 15;
+print(Walkabout.clickable(underlay));
+
+// => true
+
+underlay.style.zIndex = 5;
+underlay.style.right = "20px";
+print(Walkabout.clickable(underlay));
+
+// => true
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout.html b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout.html
new file mode 100644
index 000000000..6e40da3f2
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title>Walkabout tests</title>
+    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
+    <script src="http://doctestjs.org/doctest.js"></script>
+    <link rel="stylesheet" href="http://doctestjs.org/doctest.css"></script>
+    <!--<script src="doctestjs/doctest.js"></script>-->
+    <script src="walkabout.js"></script>
+  </head>
+  <body class="autodoctest">
+
+    <div>
+      <pre class="commenttest" href="test_walkabout.js"></pre>
+    </div>
+
+    <div id="fixture">
+      <button id="button">A button</button>
+      <input type="text" id="textinput">
+      <a href="#1" id="link">link</a>
+      <ul>
+        <li class="item">an item 1</li>
+        <li class="item">an item 2</li>
+      </ul>
+      <pre id="log"></pre>
+    </div>
+
+    <div id="textarea-fixture">
+      <textarea id="textarea" style="width: 50%; height: 3em"
+                data-walkabout-edit-value="type paste delete move"></textarea>
+    </div>
+
+  </body>
+</html>
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout.js b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout.js
new file mode 100644
index 000000000..c7454f278
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout.js
@@ -0,0 +1,218 @@
+jshint("walkabout.js", {evil: true, scripturl: true});
+// => Script passed: .../walkabout.js
+
+function log(text) {
+  console.log(text);
+  if (window.print) {
+    print(text);
+  }
+  $("#log").text($("#log").text() + text + "\n");
+}
+
+function logger(name) {
+  return function (text) {
+    log(name + ": " + text);
+  };
+}
+
+$("#button").click(function () {
+  log("button click");
+});
+
+$("#textinput").bindKey({which: 13}, function () {
+  log("Entered text: " + $("#textinput").val());
+  $("#textinput").val("");
+});
+
+location.hash = "";
+
+$(window).on("hashchange", function () {
+  var hash = location.hash;
+  if (! hash) {
+    return;
+  }
+  log("Hash changed: " + hash);
+  hash = parseInt(hash.substr(1), 10);
+  $("#link").attr("href", "#" + (hash + 1));
+});
+
+$("#fixture").on("click", ".item", function () {
+  log("Clicked li: " + $(this).text());
+});
+
+// =>
+
+var actions = $("#fixture").findActions();
+print(actions);
+
+/* =>
+
+[
+  {element: <a href="#1" id="link">link</a>, options: {}, type: "click"},
+  {
+    element: <li class="item">an item 1</li>,
+    handler: function ...,
+    jQuery: true,
+    options: {},
+    type: "click"
+  },
+  {
+    element: <li class="item">an item 2</li>,
+    handler: function ...,
+    jQuery: true,
+    options: {},
+    type: "click"
+  },
+  {
+    element: <button id="button">A button</button>,
+    handler: function ...,
+    jQuery: true,
+    options: {},
+    type: "click"
+  },
+  {
+    element: <input id="textinput" type="text" />,
+    handler: function ...,
+    jQuery: true,
+    options: {},
+    type: "keypress"
+  }
+]
+
+*/
+
+Walkabout.random.setSeed(100);
+jQuery.fn.val.patch();
+
+actions.forEach(function (a) {
+  a.run();
+});
+wait();
+
+// I don't understand why "Hash change: #1" happens twice
+/* =>
+
+Clicked li: an item 1
+Clicked li: an item 2
+button click
+Entered text: zsmOG
+Hash changed: #1...
+*/
+
+// Here we demonstrate that the random numbers are repeatable
+// (and hopefully portable):
+var rand = Walkabout.RandomStream(1);
+for (var i=0; i<10; i++) {
+  print(rand());
+}
+
+/* =>
+
+0.0225802504...
+0.8612917717...
+0.3039651696...
+0.8526061845...
+0.2648052292...
+0.5323929718...
+0.9003424612...
+0.0378481761...
+0.7294780843...
+0.4245760307...
+
+*/
+
+$("#textinput").attr("data-walkabout-options", "['a', 'b']");
+print($("#textinput").findActions());
+$("#textinput").findActions()[0].run();
+$("#textinput").findActions()[0].run();
+$("#textinput").findActions()[0].run();
+
+/* =>
+
+[
+  {
+    element: <input data-walkabout-options="['a', 'b']" id="textinput" type="text" />,
+    handler: function ...,
+    jQuery: true,
+    options: {},
+    type: "keypress"
+  }
+]
+Entered text: a
+Entered text: a
+Entered text: b
+
+*/
+
+location.hash = "#2";
+actions = $("#fixture").findActions();
+var last = actions[actions.length - 1];
+print(last.constructor.name, location.hash);
+
+// => Back #2
+
+last.run();
+print(location.hash);
+
+// => #1
+
+actions = $("#textarea-fixture").findActions();
+print(actions);
+
+/* =>
+[
+  {
+    element: <textarea data-walkabout-edit-value="type paste delete move".../>,
+    kind: "type"
+  },
+  {
+    element: <textarea data-walkabout-edit-value="type paste delete move".../>,
+    kind: "paste"
+  }
+]
+
+*/
+
+actions[0].run();
+actions[0].run();
+var t = $("#textarea")[0];
+print(repr($("#textarea").val()));
+
+// => "AKQk"
+
+actions = $("#textarea-fixture").findActions();
+actions.forEach(function (a) {print(a.description());});
+
+/* =>
+Type into textarea#textarea
+Paste into textarea#textarea
+Delete from textarea#textarea
+Move cursor in textarea#textarea
+*/
+
+print(t.selectionStart, t.selectionEnd);
+actions[3].run();
+print(t.selectionStart, t.selectionEnd);
+actions[3].run();
+print(t.selectionStart, t.selectionEnd);
+
+/* =>
+2 2
+0 0
+1 1
+*/
+
+print(repr(t.value));
+actions[0].run(); // type
+print(repr(t.value));
+actions[1].run(); // paste
+print(repr(t.value));
+actions[2].run(); // delete
+print(repr(t.value));
+
+/* =>
+"\nQ"
+"\n7Q"
+"\n7 N|`KX)vVSyQ"
+"\n7 N|`KXQ"
+*/
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout_nojquery.html b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout_nojquery.html
new file mode 100644
index 000000000..07cd7b3d9
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout_nojquery.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title>Walkabout tests</title>
+    <link rel="stylesheet" href="http://doctestjs.org/doctest.css"></script>
+    <script src="http://doctestjs.org/doctest.js"></script>
+    <!--<script src="doctestjs/doctest.js"></script>-->
+    <script src="lib/esprima.js"></script>
+    <script src="lib/falafel.js"></script>
+    <script src="walkabout.js"></script>
+  </head>
+  <body class="autodoctest">
+
+    <div>
+      <pre class="commenttest" href="test_walkabout_nojquery.js"></pre>
+    </div>
+
+    <div id="fixture">
+      <button id="button">A button</button>
+      <input type="text" id="textinput" data-walkabout-keypress="{which: 13}">
+      <a href="#1" id="link">link</a>
+      <ul>
+        <li class="item">an item 1</li>
+        <li class="item">an item 2</li>
+      </ul>
+      <pre id="log"></pre>
+    </div>
+
+  </body>
+</html>
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout_nojquery.js b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout_nojquery.js
new file mode 100644
index 000000000..4aae1d25d
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/test_walkabout_nojquery.js
@@ -0,0 +1,164 @@
+jshint("walkabout.js", {evil: true, scripturl: true});
+// => Script passed: .../walkabout.js
+
+function getElement(id) {
+  var el = document.getElementById(id);
+  if (! el) {
+    throw 'Element not found: #' + id;
+  }
+  return el;
+}
+
+function text(t) {
+  return document.createTextNode(t);
+}
+
+function log(t) {
+  console.log(t);
+  if (window.print) {
+    print(t);
+  }
+  getElement("log").appendChild(text(t + "\n"));
+}
+
+function logger(name) {
+  return function (text) {
+    log(name + ": " + text);
+  };
+}
+
+var clickAction = function () {
+  log("button click");
+};
+Walkabout.addEventListener(getElement("button"), "click", clickAction);
+
+Walkabout.addEventListener(getElement("textinput"), "keypress", function (event) {
+  console.log("got keypress", event.charCode, event.keyCode);
+  if (event.keyCode == 13) {
+    var value = Walkabout.value(getElement("textinput"));
+    log("Entered text: " + value);
+    getElement("textinput").value = "";
+  }
+});
+
+location.hash = "";
+
+Walkabout.addEventListener(window, "hashchange", function () {
+  var hash = location.hash;
+  if (! hash) {
+    return;
+  }
+  log("Hash changed: " + hash);
+  hash = parseInt(hash.substr(1), 10);
+  getElement("link").href = "#" + (hash + 1);
+});
+
+Walkabout.addEventListener(getElement("fixture"), "click", function (event) {
+  if (event.target.classList.contains("item")) {
+    log("Clicked li: " + event.target.textContent);
+  }
+}, false, {selector: ".item"});
+
+// =>
+
+var actions = Walkabout.findActions(document);
+print(actions);
+
+// FIXME: sometimes there's a Back action, sometimes not
+/* =>
+
+[
+  {element: <a href="#1" id="link">link</a>, options: {}, type: "click"},
+  {
+    element: <li class="item">an item 1</li>,
+    handler: function ...,
+    type: "click"
+  },
+  {
+    element: <li class="item">an item 2</li>,
+    handler: function ...,
+    type: "click"
+  },
+  {
+    element: <button id="button">A button</button>,
+    handler: function ...,
+    type: "click"
+  },
+  {
+    element: <input data-walkabout-keypress="{which: 13}" id="textinput" type="text" />,
+    handler: function ...,
+    type: "keypress"
+  }...
+]
+
+*/
+
+Walkabout.random.setSeed(100);
+
+actions.forEach(function (a) {
+  a.run();
+});
+wait(100);
+
+// I don't understand why "Hash change: #1" happens twice
+/* =>
+
+Clicked li: an item 1
+Clicked li: an item 2
+button click
+Entered text: EzsmOGsiee
+Hash changed: #1...
+*/
+
+getElement("textinput").setAttribute("data-walkabout-options", "['a', 'b']");
+print(Walkabout.findActions(getElement("textinput"))[0]);
+Walkabout.findActions(getElement("textinput"))[0].run();
+Walkabout.findActions(getElement("textinput"))[0].run();
+Walkabout.findActions(getElement("textinput"))[0].run();
+Walkabout.findActions(getElement("textinput"))[0].run();
+Walkabout.findActions(getElement("textinput"))[0].run();
+Walkabout.findActions(getElement("textinput"))[0].run();
+
+// FIXME: for some reason this isn't the same as in the jquery example
+// it generates a different order
+/* =>
+
+{
+  element: <input data-walkabout-keypress="{which: 13}" data-walkabout-options="['a', 'b']" id="textinput" type="text" />,
+  handler: function ...,
+  type: "keypress"
+}
+Entered text: a
+Entered text: a
+Entered text: a
+Entered text: a
+Entered text: b
+Entered text: b
+
+*/
+
+print(Walkabout.findActions().length);
+// => 6
+
+Walkabout.removeEventListener(getElement("button"), "click", clickAction);
+print(Walkabout.findActions().length);
+// => 5
+
+
+print(Walkabout.rewriteListeners("function foobar() {el.addEventListener('click', function (foo) {}, false);}"));
+// => function foobar() {Walkabout.addEventListener(el, 'click', function (foo) {}, false);}
+
+print(Walkabout.rewriteListeners("$('#test')[0].addEventListener('click', function (foo) {}, false);"));
+// => Walkabout.addEventListener($('#test')[0], 'click', function (foo) {}, false);
+
+print(Walkabout.rewriteListeners("foo().bar.value"));
+// => Walkabout.value(foo().bar)
+
+print(Walkabout.rewriteListeners("obj.removeEventListener('click', function foo() {})"));
+// => Walkabout.removeEventListener(obj, 'click', function foo() {})
+
+print(Walkabout.rewriteListeners("Walkabout.removeEventListener(obj, 'click', function foo() {})"));
+// => Walkabout.removeEventListener(obj, 'click', function foo() {})
+
+print(Walkabout.rewriteListeners("obj.value = 'foo'"));
+// => obj.value = 'foo'
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/traverse-rewrite.js b/v3/js/togetherjs/togetherjs/libs/walkabout/traverse-rewrite.js
new file mode 100644
index 000000000..94785bb5f
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/traverse-rewrite.js
@@ -0,0 +1,227 @@
+const fs = require("fs");
+const walkabout = require(__dirname + "/walkabout.js");
+const path = require("path");
+
+var optionAliases = {
+  n: "simulate",
+  h: "help"
+};
+
+var listOptions = {
+  exclude: true,
+  "extra-js": true,
+  "copy-file": true
+};
+
+function main() {
+  var args = [];
+  var options = [];
+  for (var i=2; i<process.argv.length; i++) {
+    var arg = process.argv[i];
+    if (arg.indexOf('-') === 0) {
+      var value, name;
+      arg = arg.substr(1);
+      if (arg.indexOf('-') === 0) {
+        arg = arg.substr(1);
+        if (arg.indexOf('=') != -1) {
+          value = arg.substr(arg.indexOf('=')+1);
+          name = arg.substr(0, arg.indexOf('='));
+        } else {
+          value = true;
+          name = arg;
+        }
+      } else {
+        value = arg.substr(1) || true;
+        name = arg.charAt(0);
+      }
+      name = optionAliases[name] || name;
+      if (listOptions[name]) {
+        if (name in options) {
+          options[name].push(value);
+        } else {
+          options[name] = [value];
+        }
+      } else {
+        options[name] = value;
+      }
+    } else {
+      if (! fs.existsSync(arg)) {
+        console.log("File does not exist:", arg);
+        process.exit(1);
+      }
+      args.push(arg);
+    }
+  }
+  if (options.help) {
+    help();
+    return;
+  }
+  if (options.exclude) {
+    options.exclude = options.exclude.map(function (r) {return new RegExp(r);});
+  }
+  options["copy-file"] = options["copy-file"] || [];
+  options["copy-file"] = options["copy-file"].map(function (f) {
+    var pos = f.indexOf(":");
+    if (pos == -1) {
+      throw "--copy-file=" + f + " has no :";
+    }
+    var name = f.substr(0, pos);
+    var filename = f.substr(pos+1);
+    if (! fs.existsSync(filename)) {
+      throw "--copy-file=" + f + " does not exist";
+    }
+    return {name: name, filename: filename};
+  });
+  if (options.copy) {
+    options["copy-file"].push({
+      name: "walkabout.js",
+      filename: path.join(__dirname, "walkabout.js")
+    });
+  }
+  if (options.simulate) {
+    console.log("Simulating (not writing)");
+  }
+  if (! options['no-js']) {
+    if ((! options["script"]) && (! options["copy"])) {
+      console.log("You must provide --script=URL to rewrite Javascript");
+      process.exit(1);
+    }
+    rewriteJavascript(options, args);
+  }
+  if (! options['no-html']) {
+    rewriteHtml(options, args);
+  }
+}
+
+function help() {
+  console.log(
+"Usage: " + process.argv[0] + " " + path.basename(process.argv[1]) + " --script=URL [OPTIONS] DIRS\n" +
+"  Rewrites .js and .html files for walkabout.js\n" +
+"  Options:\n" +
+"    DIRS: \n" +
+"      directories to look for files in\n" +
+"    -h --help:\n" +
+"      this help\n" +
+"    --script=URL\n" +
+"      the URL of walkabout.js to inject into HTML files\n" +
+"    -n --simulate\n" +
+"      Don't actually write or change files\n" +
+"    --copy\n" +
+"      Copy walkabout.js into each directory with HTML files\n" +
+"    --exclude=REGEX\n" +
+"      Exclude any files whose FULL PATH matches the regular expression\n" +
+"    --extra-js=CODE\n" +
+"      Include extra code at the beginning of each file (after walkabout.js)\n" +
+"    --copy-file=FILENAME:LOCATION\n" +
+"      As well as walkabout.js, also copy the file in LOCATION to FILENAME\n"
+);
+}
+
+function rewriteJavascript(options, dirs) {
+  var files = findFiles(dirs, '.js', options.exclude, options["copy-file"]);
+  files.forEach(function (f) {
+    var content = fs.readFileSync(f, "UTF-8");
+    try {
+      var newContent = walkabout.rewriteListeners(content);
+    } catch (e) {
+      console.warn("Error parsing:", f);
+      throw e;
+    }
+    if (content === newContent) {
+      console.log("File not changed:", f);
+      return;
+    }
+    console.log("Changing:", f);
+    if (! options.simulate) {
+      fs.writeFileSync(f, newContent, "UTF-8");
+    }
+  });
+}
+
+function rewriteHtml(options, dirs) {
+  var extra = options["extra-js"] && options["extra-js"].join("");
+  var files = findFiles(dirs, ".html", options.exclude, options["copy-file"]);
+  var script = options.script;
+  if (options.copy) {
+    script = "walkabout.js";
+  }
+  var writtenDirs = {};
+  files.forEach(function (f) {
+    var content = fs.readFileSync(f, "UTF-8");
+    var newContent = walkabout.rewriteHtml(content, script, extra);
+    if (content === newContent) {
+      console.log("File not changed:", f);
+    } else {
+      console.log("Changing:", f);
+      if (! options.simulate) {
+        fs.writeFileSync(f, newContent, "UTF-8");
+      }
+    }
+    var dir = path.dirname(f);
+    if (! writtenDirs[dir]) {
+      writtenDirs[dir] = true;
+      options["copy-file"].forEach(function (c) {
+        var filePath = path.join(dir, c.name);
+        if (fs.existsSync(filePath)) {
+          console.log("File exists:", filePath);
+        } else {
+          console.log("Linking", c.filename, "to", filePath);
+          if (! options.simulate) {
+            fs.symlinkSync(path.resolve(c.filename), filePath);
+          }
+        }
+      });
+    }
+  });
+}
+
+function findFiles(dirs, ext, excludes, copied, files) {
+  files = files || [];
+  dirs.forEach(function (d) {
+    fs.readdirSync(d).forEach(function (f) {
+      if (f == "walkabout.js") {
+        return;
+      }
+      if (copied) {
+        var found = false;
+        copied.forEach(function (c) {
+          if (f == c.name) {
+            found = true;
+          }
+        });
+        if (found) {
+          return;
+        }
+      }
+      f = path.join(d, f);
+      if (fs.statSync(f).isDirectory()) {
+        findFiles([f], ext, excludes, copied, files);
+        return;
+      }
+      if (path.extname(f) != ext) {
+        return;
+      }
+      if (exclude(excludes, f)) {
+        return;
+      }
+      files.push(f);
+    });
+  });
+  return files;
+}
+
+function exclude(excludes, filename) {
+  if (! excludes) {
+    return false;
+  }
+  for (var i=0; i<excludes.length; i++) {
+    if (filename.search(excludes[i]) != -1) {
+      return true;
+    }
+  }
+  return false;
+}
+
+if (require.main == module) {
+  main();
+}
diff --git a/v3/js/togetherjs/togetherjs/libs/walkabout/walkabout.js b/v3/js/togetherjs/togetherjs/libs/walkabout/walkabout.js
new file mode 100644
index 000000000..6490439a9
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/walkabout/walkabout.js
@@ -0,0 +1,1899 @@
+(function () {function init(Walkabout) {
+
+Walkabout = Walkabout || {};
+
+// FIXME: this shouldn't be established so early, in case jquery
+// is loaded after walkabout.js
+Walkabout.jQueryAvailable = (typeof jQuery !== "undefined");
+Walkabout.$ = window.jQuery;
+
+// Actions must turn this on in order to patch .value/.val():
+Walkabout.inTesting = false;
+
+// These are events that we don't need to fire directly:
+Walkabout.ignoreEvents = {
+  hashchange: true
+};
+
+Walkabout.options = {
+  anyLocalLinks: false,
+  loadPersistent: false
+};
+
+Walkabout.setInTesting = function setInTesting(func, time) {
+  return function run() {
+    time = time || 0;
+    var id = setInTesting.count++;
+    Walkabout.inTesting = id;
+    var result;
+    try {
+      result = func.apply(this, arguments);
+    } catch (e) {
+      if (Walkabout.inTesting == id) {
+        Walkabout.inTesting = false;
+      }
+      throw e;
+    }
+    if (time == -1) {
+      if (Walkabout.inTesting == id) {
+        Walkabout.inTesting = false;
+      }
+    } else {
+      setTimeout(function () {
+        if (Walkabout.inTesting == id) {
+          Walkabout.inTesting = false;
+        }
+      }, time);
+    }
+    return result;
+  };
+};
+
+Walkabout.setInTesting.count = 1;
+
+/****************************************
+ * Utility functions:
+ */
+
+Walkabout._extend = function (obj, props) {
+  for (var a in props) {
+    if (! props.hasOwnProperty(a)) {
+      continue;
+    }
+    obj[a] = props[a];
+  }
+};
+
+Walkabout.Class = function Class(prototype) {
+  return function () {
+    var obj = Object.create(prototype);
+    prototype.constructor.apply(obj, arguments);
+    return obj;
+  };
+};
+
+/****************************************
+ * Actions
+ */
+
+Walkabout.actionFinders = [];
+
+Walkabout.findActions = function (el, actions) {
+  el = el || document;
+  actions = actions || new Walkabout.Actions();
+  if (! (Array.isArray(el) ||
+         (Walkabout.jQueryAvailable && el instanceof Walkabout.$))) {
+    el = [el];
+  }
+  for (var i=0; i<el.length; i++) {
+    for (var j=0; j<Walkabout.actionFinders.length; j++) {
+      var finder = Walkabout.actionFinders[j];
+      finder(el[i], actions);
+    }
+  }
+  return actions;
+};
+
+Walkabout.ignoreElement = function (el) {
+  // FIXME: should probably make this pluggable as well
+  // Also, I should unjQueryfy .is(":visible") and put it here
+  while (el) {
+    if (el.getAttribute && el.getAttribute("data-walkabout-disable")) {
+      return true;
+    }
+    el = el.parentNode;
+  }
+  return false;
+};
+
+Walkabout.DEFAULT_TIMES = 100;
+
+Walkabout.runManyActions = function runManyActions(options) {
+  options = options || {};
+  var el = options.element || document;
+  var speed = options.speed || 100;
+  var whileTrue = options.whileTrue || null;
+  var ondone = options.ondone;
+  var onstatus = options.onstatus;
+  var cancelled = false;
+  var totalTimes = options.times;
+  var remaining;
+  function cancel() {
+    cancelled = true;
+  }
+  if ((! whileTrue) && ! totalTimes) {
+    totalTimes = Walkabout.DEFAULT_TIMES;
+  }
+  if (options.startAtRemaining) {
+    remaining = options.startAtRemaining;
+  } else {
+    remaining = totalTimes;
+  }
+  function runOnce() {
+    var doAgain = ! cancelled;
+    if (whileTrue && (! whileTrue())) {
+      doAgain = false;
+    }
+    if (totalTimes !== undefined && remaining <= 0) {
+      doAgain = false;
+    }
+    if (doAgain) {
+      setTimeout(runOnce, speed);
+    }
+    if (totalTimes !== undefined) {
+      remaining--;
+    }
+    var actions = Walkabout.findActions(el);
+    var action = actions.pick();
+    if (onstatus) {
+      onstatus({
+        actions: actions,
+        action: action,
+        times: totalTimes,
+        remaining: remaining
+      });
+    }
+    if ((! doAgain) && ondone) {
+      ondone();
+      return;
+    }
+    if (action) {
+      action.run();
+    }
+  }
+  setTimeout(runOnce, speed);
+  return cancel;
+};
+
+Walkabout.persistentData = function (value) {
+  var key = "walkabout.runstate";
+  if (value === undefined) {
+    value = localStorage.getItem(key);
+    if (value) {
+      value = JSON.parse(value);
+    } else {
+      value = {};
+    }
+    return value;
+  }
+  if (value === null) {
+    localStorage.removeItem(key);
+  } else {
+    localStorage.setItem(key, JSON.stringify(value));
+  }
+  return value;
+};
+
+Walkabout.actionFinders.push(function findAnchors(el, actions) {
+  var els = el.querySelectorAll("a");
+  for (var i=-1; i<els.length; i++) {
+    var anchor = i == -1 ? el : els[i];
+    if (anchor.tagName != "A" ||
+        Walkabout.ignoreElement(anchor)) {
+      continue;
+    }
+    if (actions.matchingAction("click", anchor)) {
+      continue;
+    }
+    if (! Walkabout.clickable(anchor)) {
+      continue;
+    }
+    var href;
+    if (Walkabout.options.anyLocalLinks) {
+      href = anchor.href;
+      var here = location.protocol + "//" + location.host;
+      if (typeof Walkabout.options.anyLocalLinks == "string") {
+        if (Walkabout.options.anyLocalLinks.indexOf("/") !== 0) {
+          here += "/";
+        }
+        here += Walkabout.options.anyLocalLinks;
+      }
+      if (href.indexOf(here) !== 0) {
+        continue;
+      }
+    } else {
+      href = anchor.getAttribute("href");
+      if ((! href) || href.indexOf("#") !== 0) {
+        continue;
+      }
+    }
+    actions.push(Walkabout.LinkFollower({
+      element: anchor,
+      type: "click"
+    }));
+  }
+});
+
+Walkabout.actionFinders.push(function findEdits(el, actions) {
+  var children = el.getElementsByTagName("*");
+  for (var i=-1; i<children.length; i++) {
+    var e = i == -1 ? el : children[i];
+    var attr = e.getAttribute && e.getAttribute("data-walkabout-edit-value");
+    if (attr) {
+      var types = attr.split(/ /g);
+      for (var j=0; j<types.length; j++) {
+        var type = types[j];
+        if (type == "type") {
+          actions.push(Walkabout.Typer(e, "type"));
+        } else if (type == "paste") {
+          actions.push(Walkabout.Typer(e, "paste"));
+        } else if (type == "delete") {
+          if (e.value) {
+            actions.push(Walkabout.Deleter(e));
+          }
+        } else if (type == "move") {
+          if (e.value) {
+            actions.push(Walkabout.Mover(e));
+          }
+        //} else if (type == "change") {
+        //  actions.push(Walkabout.Changer(e));
+        } else if (type) {
+          console.warn('Unexpected data-walkabout-edit-value="' + type + '"');
+        }
+      }
+    }
+  }
+});
+
+Walkabout.Typer = Walkabout.Class({
+  constructor: function Typer(element, kind) {
+    this.element = element;
+    this.kind = kind;
+  },
+
+  show: function () {
+    return Walkabout.Highlighter(this.element, "type");
+  },
+
+  description: function () {
+    return (this.kind == "type" ? "Type" : "Paste") +
+      " into " + Walkabout.elementDescription(this.element);
+  },
+
+  run: Walkabout.setInTesting(function () {
+    var e = this.element;
+    var value = e.value;
+    // First we save the location of the cursor:
+    e.focus();
+    var startPos = e.selectionStart;
+    var endPos = e.selectionEnd;
+    var r = Walkabout.random;
+    var length = 1;
+    if (this.kind == "paste") {
+      length = Math.floor(r() * 20);
+    }
+    var key = r.string(r.letters + r.numbers + r.punctuation + r.whitespace, length);
+    var start = value.substr(0, startPos);
+    var end = value.substr(endPos);
+    e.value = start + key + end;
+    // If we had a selection, we lost when typing:
+    e.selectionStart = e.selectionEnd = startPos + key.length;
+    // FIXME: should probably also do keydown, keypress, in sequence
+    // FIXME: should set the right keyCode/etc value
+    var keyup = Walkabout.EventAction({
+      element: e,
+      type: this.kind == "type" ? "keyup" : "paste",
+      handler: null, // FIXME: figure out if there's a handler?
+      jQuery: Walkabout.jQueryAvailable
+    });
+    keyup.run();
+  })
+
+});
+
+Walkabout.Deleter = Walkabout.Class({
+  constructor: function Deleter(element) {
+    this.element = element;
+  },
+
+  show: function () {
+    return Walkabout.Highlighter(this.element, "delete from");
+  },
+
+  description: function () {
+    return "Delete from " + Walkabout.elementDescription(this.element);
+  },
+
+  run: Walkabout.setInTesting(function () {
+    var length;
+    var e = this.element;
+    var value = e.value;
+    e.focus();
+    var startPos = e.selectionStart;
+    var endPos = e.selectionEnd;
+    if (startPos != endPos) {
+      // If there's a selection, delete that...
+      e.value = value.substr(0, startPos) + value.substr(endPos);
+      e.selectionStart = e.selectionEnd = startPos;
+    } else {
+      // We can delete after or before...
+      var canStart = startPos > 0;
+      // FIXME: I'm off by one here I think:
+      var canEnd = startPos < value.length;
+      if (canStart && canEnd && Walkabout.random() < 0.5) {
+        canStart = false;
+      }
+      if (canStart) {
+        length = Math.floor(Walkabout.random() * startPos);
+        e.value = value.substr(0, startPos - length) + value.substr(startPos);
+        e.selectionStart = e.selectionEnd = startPos - length;
+      } else {
+        length = Math.floor(Walkabout.random() * (value.length - startPos));
+        e.value = value.substr(0, startPos) + value.substr(startPos + length);
+        e.selectionStart = e.selectionEnd = startPos;
+      }
+    }
+    // FIXME: should set the right keyCode/etc value:
+    // FIXME: also keydown?  Or keypress?
+    var keyup = Walkabout.EventAction({
+      element: e,
+      type: "keyup",
+      handler: null, // FIXME: figure out if there's a handler?
+      jQuery: Walkabout.jQuerySupported
+    });
+    keyup.run();
+  })
+});
+
+Walkabout.Mover = Walkabout.Class({
+  constructor: function Mover(element) {
+    this.element = element;
+  },
+
+  show: function () {
+    return Walkabout.Highlighter(this.element, "move cursor");
+  },
+
+  description: function () {
+    return "Move cursor in " + Walkabout.elementDescription(this.element);
+  },
+
+  run: Walkabout.setInTesting(function () {
+    var e = this.element;
+    var value = e.value;
+    e.focus();
+    var pos = Math.floor(Walkabout.random() * value.length);
+    e.selectionStart = e.selectionEnd = pos;
+  })
+});
+
+
+/****************************************
+ * jQuery support:
+ */
+
+if (Walkabout.jQueryAvailable) {
+
+  Walkabout.$.fn.bindKey = function (matcher, arg1, arg2, arg3) {
+    var callback = arg3 || arg2 || arg1;
+    function handler(event) {
+      if (matcher.which) {
+        if (typeof matcher.which == "number" && event.which != matcher.which) {
+          return;
+        }
+        if (typeof matcher.which == "object" && typeof matcher.which.length == "number") {
+          if (matcher.which.indexOf(event.which) == -1) {
+            return;
+          }
+        }
+      }
+      // FIXME: I think this only makes sense for keypress
+      if ((matcher.shiftKey && ! event.shiftKey) ||
+          (matcher.ctrlKey && ! event.ctrlKey) ||
+          (matcher.altKey && ! event.altKey)) {
+        return;
+      }
+      callback.call(this, event);
+    }
+    matcher.type = matcher.type || "keypress";
+    handler.matcher = matcher;
+    handler.element = this;
+    handler.runEvent = function () {
+      var key = this.matcher.which;
+      if (typeof key == "object" && typeof key.length == "number") {
+        key = Walkabout.random.pick(key);
+      }
+      var event = Walkabout.$.Event(matcher.type);
+      event.which = key;
+      this.element.trigger(event);
+    };
+    var args = [matcher.type];
+    if (arg2) {
+      args.push(arg1);
+    }
+    if (arg3) {
+      args.push(arg2);
+    }
+    args.push(handler);
+    this.on.apply(this, args);
+  };
+
+  Walkabout.actionFinders.push(function jQueryHandlers(el, actions) {
+    var els = Walkabout.$(el).find("*");
+    els.push(el);
+    els.each(function () {
+      if (Walkabout.ignoreElement(this)) {
+        return;
+      }
+      if (! Walkabout.clickable(this)) {
+        // FIXME: not sure if this is right for all kinds of events, or just click?
+        return;
+      }
+      var events;
+      if (Walkabout.$._data) {
+        // This is for jQuery 1.8+
+        events = Walkabout.$._data(this, "events");
+      } else {
+        // For older versions
+        events = Walkabout.$(this).data("events");
+      }
+      if (! events) {
+        return;
+      }
+      for (var eventName in events) {
+        if ((! events.hasOwnProperty(eventName)) || Walkabout.ignoreEvents[eventName]) {
+          continue;
+        }
+        for (var i=0; i<events[eventName].length; i++) {
+          var event = events[eventName][i];
+          var els = [this];
+          if (event.selector) {
+            els = Walkabout.$(this).find(event.selector);
+          }
+          for (var j=0; j<els.length; j++) {
+            var action = Walkabout.EventAction({
+              element: els[j],
+              type: eventName,
+              handler: event.handler,
+              jQuery: true
+            });
+            // Prefer the jQuery form of the action
+            var existing = actions.matchingAction(eventName, els[j]);
+            if (existing) {
+              actions.replaceAction(existing, action);
+            } else {
+              actions.push(action);
+            }
+          }
+        }
+      }
+    });
+  });
+
+  Walkabout.$.fn.val.patch = function () {
+    Walkabout.$.fn.val = Walkabout.$.fn.val.mock;
+  };
+
+  Walkabout.$.fn.val.mock = function () {
+    if ((! Walkabout.inTesting) || this.attr("type") == "hidden") {
+      return Walkabout.$.fn.val.mock.orig.apply(this, arguments);
+    }
+    var options = this.attr("data-walkabout-options");
+    if (options) {
+      options = eval("(" + options + ")");
+    } else {
+      options = Walkabout.random.letters;
+    }
+    if (Array.isArray(options)) {
+      return Walkabout.random.pick(options);
+    } else if (typeof options == "function") {
+      return options(this);
+    } else if (typeof options == "string") {
+      var size = parseInt(this.attr("size") || 10, 10);
+      size = Math.floor(Walkabout.random() * size);
+      return Walkabout.random.string(options, size);
+    } else {
+      // FIXME: what then?  E.g., if it's an object
+      return Walkabout.$.fn.val.mock.orig.apply(this, arguments);
+    }
+  };
+
+  Walkabout.$.fn.val.mock.patch = function () {
+    // Already patched
+  };
+
+  Walkabout.$.fn.val.mock.unpatch = function () {
+    Walkabout.$.fn.val = jQuery.fn.val.mock.orig;
+  };
+
+  Walkabout.$.fn.val.mock.orig = Walkabout.$.fn.val;
+  Walkabout.$.fn.val.mock.mock = Walkabout.$.fn.val.mock;
+
+  Walkabout.$.fn.findActions = function () {
+    return Walkabout.findActions(this);
+  };
+
+}
+
+
+/****************************************
+ * Action implementations:
+ */
+
+Walkabout.Highlighter = Walkabout.Class({
+  constructor: function (element, text) {
+    this.element = element;
+    this.text = text;
+    this.show();
+  },
+
+  OUTER: 8,
+
+  sizeOffsets: [-2, 0, 2],
+  sizeOffsetIndex: 0,
+
+  show: function () {
+    var box = this.element.getBoundingClientRect();
+    var middleX = Math.floor((box.left + box.right) / 2);
+    var middleY = Math.floor((box.top + box.bottom) / 2);
+    var h = document.createElement("div");
+    // This is an attempt to make
+    outer = this.OUTER + this.sizeOffsets[this.sizeOffsetIndex];
+    var newSize = this.sizeOffsetIndex++;
+    if (newSize >= this.sizeOffsets.length) {
+      newSize = 0;
+    }
+    Walkabout.Highlighter.prototype.sizeOffsetIndex = newSize;
+    var outer = this.OUTER + Math.floor(Math.random() * 4);
+    h.style.position = "absolute";
+    h.style.zIndex = 1000;
+    h.style.border = "2px dotted #f00";
+    h.style.borderRadius = outer + "px";
+    h.style.left = middleX + "px";
+    h.style.top = middleY + "px";
+    h.style.marginTop = (-box.height/2 - (outer/2)) + "px";
+    h.style.marginLeft = (-box.width/2 - (outer/2)) + "px";
+    h.style.width = (box.width + outer) + "px";
+    h.style.height = (box.height + outer) + "px";
+    h.style.textAlign = "center";
+    //h.style.verticalAlign = "center";
+    h.setAttribute("data-walkabout-disable", "1");
+    h.appendChild(document.createTextNode(this.text));
+    h.addEventListener("click", this.remove.bind(this), false);
+    document.body.appendChild(h);
+    this.highlightElement = h;
+  },
+
+  remove: function () {
+    var h = this.highlightElement;
+    if (h) {
+      h.parentNode.removeChild(h);
+      this.highlightElement = null;
+    }
+  }
+
+});
+
+Walkabout.Notifier = Walkabout.Class({
+
+  constructor: function (message) {
+    this.message = message;
+    this.show();
+  },
+
+  container: function () {
+    var id = "walkabout-notifier-container";
+    var el = document.getElementById(id);
+    if (el) {
+      return el;
+    }
+    el = document.createElement("div");
+    el.id = id;
+    el.setAttribute("style", Walkabout.UI.prototype.styles.panel);
+    el.style.right = "";
+    el.style.left = "10px";
+    el.setAttribute("data-walkabout-disable", "1");
+    document.body.append(el);
+    return el;
+  },
+
+  show: function () {
+    var c = this.container();
+    var el = document.createElement("div");
+    el.appendChild(document.createTextNode(this.message));
+    el.addEventListener("click", (function () {
+      this.remove();
+    }).bind(this));
+    c.appendChild(el);
+    this._element = el;
+  },
+
+  remove: function () {
+    var el = this._element;
+    if (! el) {
+      return;
+    }
+    var parent = el.parentNode;
+    parent.removeChild(el);
+    if (! parent.childNodes.length) {
+      parent.parentNode.removeChild(parent);
+    }
+  }
+
+});
+
+Walkabout.elementDescription = function (el, isJQuery) {
+  var name;
+  if (el.id) {
+    name = el.tagName.toLowerCase() + "#" + el.id;
+  } else {
+    name = el.tagName.toLowerCase();
+    var all = document.getElementsByTagName(name);
+    for (var i=0; i<all.length; i++) {
+      if (all[i] == el) {
+        name += "[" + i + "]";
+        break;
+      }
+    }
+    if (el.className) {
+      name += "." + el.className.replace(/\s+/, ".");
+    }
+  }
+  if (isJQuery) {
+    name = '$("' + name + '")';
+  }
+  return name;
+};
+
+Walkabout.EventAction = Walkabout.Class({
+
+  constructor: function EventAction(event) {
+    this.element = event.element;
+    this.type = event.type;
+    this.handler = event.handler;
+    this.options = event.options || {};
+    this.jQuery = !! event.jQuery;
+  },
+
+  show: function () {
+    var name = this.type;
+    if (this.jQuery) {
+      name = '$.' + this.type + '()';
+    }
+    return Walkabout.Highlighter(this.element, name);
+  },
+
+  description: function () {
+    var s;
+    var elName = Walkabout.elementDescription(this.element, this.jQuery);
+    if (this.jQuery) {
+      s = elName + "." + this.type + "()";
+    } else {
+      s = "Fire " + this.type + " on " + elName;
+    }
+    return s;
+  },
+
+  run: Walkabout.setInTesting(function run() {
+    var event;
+    var props = this.eventProperties();
+    if (props.before == "randomValue") {
+      if (Walkabout.jQueryAvailable) {
+        Walkabout.$(this.element).val(Walkabout.value(this.element));
+      } else {
+        this.element.value = Walkabout.value(this.element);
+      }
+    }
+    if (this.handler && this.handler.runEvent) {
+      this.handler.runEvent();
+    } else if (Walkabout.jQueryAvailable) {
+      event = Walkabout.$.Event(this.type);
+      Walkabout._extend(event, props);
+      if ((this.type == "keyup" || this.type == "keydown" || this.type == "keypress") &&
+          (! event.which)) {
+        var normalKeys = [13, 9, 32];
+        if (Walkabout.random() > 0.4) {
+          event.which = Walkabout.random.pick(normalKeys);
+        } else {
+          event.which = Math.floor(Walkabout.random() * 256);
+        }
+        event.keyCode = event.which;
+      }
+      Walkabout.$(this.element).trigger(event);
+    } else {
+      var module = Walkabout._getEventModule(this.type);
+      event = document.createEvent(module);
+      if (module == "UIEvents") {
+        event.initUIEvent(
+          this.type,
+          props.get("canBubble", true), // canBubble
+          props.get("cancelable", true), // cancelable
+          window, // view
+          props.get("detail", 0) // detail
+        );
+      } else if (module == "MouseEvents" || module == "MouseEvent") {
+        event.initMouseEvent(
+          this.type,
+          props.get("canBubble", true), // canBubble
+          props.get("cancelable", true), // cancelable
+          window, // view
+          props.get("detail", 0), // detail
+          props.get("screenX", 0), // screenX
+          props.get("screenY", 0), // screenY
+          props.get("clientX", 0), // clientX
+          props.get("clientY", 0), // clientY
+          props.get("ctrlKey", false), // ctrlKey
+          props.get("altKey", false), // altKey
+          props.get("shiftKey", false), // shiftKey
+          props.get("metaKey", false), // metaKey
+          props.get("button", 0), // button
+          props.get("relatedTarget", null) // relatedTarget
+        );
+      } else if (module == "HTMLEvents") {
+        event.initEvent(
+          this.type,
+          props.get("canBubble", false), // canBubble
+          props.get("cancelable", false) // cancelable
+        );
+      } else if (module == "KeyboardEvents" || module == "KeyboardEvent") {
+        var keyCode = props.get("keyCode", props.get("which", props.get("charCode", null)));
+        var charCode = null;
+        if (typeof keyCode == "string") {
+          charCode = keyCode;
+          keyCode = charCode.charCodeAt(0);
+        }
+        if (! keyCode) {
+          keyCode = Math.floor(Walkabout.random() * 256);
+        }
+        if (! charCode) {
+          charCode = String.fromCharCode(keyCode);
+        }
+        if (event.initKeyEvent) {
+          event.initKeyEvent(
+            this.type,
+            props.get("canBubble", true), // canBubble
+            props.get("cancelable", true), // cancelable
+            window, // window
+            props.get("ctrlKey", false), // ctrlKey
+            props.get("altKey", false), // altKey
+            props.get("shiftKey", false), // shiftKey
+            props.get("metaKey", false), // metaKey
+            keyCode, // keyCode/which
+            charCode // charCode
+          );
+        } else {
+          // initKeyboardEvent seems pretty broken
+          event = {
+            type: this.type,
+            target: this.element,
+            altKey: props.get("altKey", false),
+            "char": charCode,
+            ctrlKey: props.get("ctrlKey", false),
+            keyCode: keyCode,
+            locale: "",
+            location: props.get("location", 0),
+            metaKey: props.get("metaKey", false),
+            repeat: props.get("repeat", false),
+            shiftKey: props.get("shiftKey", false),
+            which: keyCode,
+            isDefaultPrevented: false,
+            preventDefault: function () {
+              this.isDefaultPrevented = true;
+            },
+            stopPropagation: function () {
+              // FIXME: not sure what to do here
+            }
+          };
+          this.handler(event);
+          // FIXME: pay attention to isDefaultPrevented?
+          // FIXME: do default?
+          return;
+          /*
+          FIXME: this is broken on Chrome:
+
+          var mods = [];
+          if (props.ctrlKey) {
+            mods.push("Control");
+          }
+          if (props.altKey) {
+            mods.push("Alt");
+          }
+          if (props.shiftKey) {
+            mods.push("Shift");
+          }
+          if (props.metaKey) {
+            mods.push("Meta");
+          }
+          mods = mods.join(" ") || null;
+          event.initKeyboardEvent(
+            this.event.type,
+            props.get("canBubble", true), // canBubble
+            props.get("cancelable", true), // cancelable
+            window,
+            'Enter',
+            0, // location? http://msdn.microsoft.com/en-us/library/ie/ff974894(v=vs.85).aspx
+            mods, // modifer keys
+            props.get("repeat", false), // repeat
+            null // locale
+          );
+          */
+        }
+      } else {
+        console.warn("Unknown method type/module:", module, this.type);
+      }
+      Walkabout._extend(event, props);
+      this.element.dispatchEvent(event);
+    }
+  }),
+
+  eventProperties: function () {
+    var attrs = this.element.attributes;
+    var attrName = "data-walkabout-" + this.type;
+    var result = Object.create(this._eventPropsPrototype);
+    if (! attrs) {
+      return result;
+    }
+    for (var i=0; i<attrs.length; i++) {
+      if (attrs[i].name == attrName) {
+        var data;
+        try {
+          data = JSON.parse(attrs[i].value);
+        } catch (e) {
+        }
+        if (data === undefined) {
+          try {
+            data = eval("(" + attrs[i].value + ")");
+          } catch (e) {
+            console.warn("Bad attribute", attrs[i].name, JSON.stringify(attrs[i].value));
+            continue;
+          }
+        }
+        Walkabout._extend(result, data);
+      }
+    }
+    return result;
+  },
+
+  _eventPropsPrototype: {
+    get: function (name, default_) {
+      if (this.hasOwnProperty(name)) {
+        return this[name];
+      } else {
+        return default_;
+      }
+    }
+  }
+
+});
+
+Walkabout._getEventModule = function (type) {
+  var modules = {
+    click: "MouseEvent",
+    dblclick: "MouseEvent",
+    mousedown: "MouseEvent",
+    mouseenter: "MouseEvent",
+    mouseleave: "MouseEvent",
+    mouseup: "MouseEvent",
+    mouseover: "MouseEvent",
+    mousemove: "MouseEvent",
+    mouseout: "MouseEvent",
+    load: "HTMLEvents",
+    unload: "HTMLEvents",
+    abort: "HTMLEvents",
+    error: "HTMLEvents",
+    select: "HTMLEvents",
+    change: "HTMLEvents",
+    submit: "HTMLEvents",
+    reset: "HTMLEvents",
+    focus: "HTMLEvents",
+    blur: "HTMLEvents",
+    resize: "HTMLEvents",
+    scroll: "HTMLEvents",
+    DOMFocusIn: "UIEvents",
+    DOMFocusOut: "UIEvents",
+    DOMActivate: "UIEvents",
+    keydown: "KeyboardEvent",
+    keyup: "KeyboardEvent",
+    keypress: "KeyboardEvent"
+  };
+  // Where should these go?
+  //   http://www.w3.org/TR/DOM-Level-3-Events/#events-wheelevents
+  // This claims HTMLEvents should be UIEvents
+  //   http://www.w3.org/TR/DOM-Level-3-Events/#events-uievents
+  return modules[type] || "UIEvents";
+};
+
+Walkabout.LinkFollower = Walkabout.Class({
+  constructor: function LinkFollower(event) {
+    this.element = event.element;
+    this.type = event.type;
+    if (this.type != "click") {
+      throw "Unexpected event type: " + this.type;
+    }
+    this.options = event.options || {};
+  },
+
+  show: function () {
+    return Walkabout.Highlighter(this.element, "follow");
+  },
+
+  run: Walkabout.setInTesting(function () {
+    var event;
+    var cancelled;
+    if (Walkabout.jQueryAvailable) {
+      event = Walkabout.$.Event("click");
+      Walkabout.$(this.element).trigger(event);
+      cancelled = event.isDefaultPrevented();
+    } else {
+      event = document.createEvent("MouseEvents");
+      event.initMouseEvent(
+        "click", // type
+        true, // canBubble
+        true, // cancelable
+        window, // view
+        0, // detail
+        0, // screenX
+        0, // screenY
+        0, // clientX
+        0, // clientY
+        false, // ctrlKey
+        false, // altKey
+        false, // shiftKey
+        false, // metaKey
+        0, // button
+        null // relatedTarget
+      );
+      cancelled = this.element.dispatchEvent(event);
+    }
+    if ((! cancelled) && ! (event.defaultPrevented)) {
+      location.href = this.element.getAttribute("href");
+    }
+  })
+});
+
+Walkabout.hidden = function (el) {
+  return (el.offsetWidth === 0 &&
+          el.offsetHeight === 0);
+  // FIXME: jQuery also uses a display: none test on some browsers,
+  // but this seems to be the only check for modern browsers?
+};
+
+Walkabout.visible = function (el) {
+  return ! Walkabout.hidden(el);
+};
+
+Walkabout.clickable = function (el) {
+  if (Walkabout.hidden(el)) {
+    return false;
+  }
+  if (Walkabout.anyOverlap(el)) {
+    return false;
+  }
+  return true;
+};
+
+Walkabout.anyOverlap = function (overElement) {
+  try {
+    var overStyle = getComputedStyle(overElement);
+  } catch (e) {
+    // FIXME: this is being called for the HTMLDocument element and other
+    // things that can't be used with getComputedStyle
+    return false;
+  }
+  if (! overStyle) {
+    return false;
+  }
+  var overZIndex = parseInt(overStyle.getPropertyValue("z-index"), 10);
+  var overBox = overElement.getBoundingClientRect();
+  var overHeight = overElement.offsetHeight;
+  var overWidth = overElement.offsetWidth;
+  var els = document.getElementsByTagName("*");
+  var len = els.length;
+  var result = [];
+  var parents = [];
+  var parent = overElement.parentNode;
+  while (parent) {
+    parents.push(parent);
+    parent = parent.parentNode;
+  }
+  for (var i=0; i<len; i++) {
+    var el = els[i];
+    if (el == overElement || parents.indexOf(el) != -1) {
+      continue;
+    }
+    var style = getComputedStyle(el);
+    var position = style.getPropertyValue("position");
+    if (position != "relative" && position != "fixed" && position != "absolute") {
+      continue;
+    }
+    var zIndex = parseInt(style.getPropertyValue("z-index"), 10);
+    if (zIndex <= overZIndex) {
+      continue;
+    }
+    var box = el.getBoundingClientRect();
+    if (box.left <= overBox.left &&
+        box.right >= overBox.right &&
+        box.top <= overBox.top &&
+        box.bottom >= overBox.bottom) {
+      return true;
+    }
+  }
+  return false;
+};
+
+/****************************************
+ * Random numbers:
+ */
+
+
+// Based on Python's whrandom
+Walkabout.RandomStream = function RandomStream(newSeed) {
+  var seed, x, y, z;
+  function setSeed(value) {
+    if (! value) {
+      value = Date.now();
+    }
+    if (typeof value != "number") {
+      if (value.getTime) {
+        value = value.getTime();
+      }
+      value = parseInt(value, 10);
+    }
+    if ((! value) || isNaN(value)) {
+      throw "Bad seed: " + value;
+    }
+    seed = value;
+    x = (seed % 30268) + 1;
+    seed = (seed - (seed % 30268)) / 30268;
+    y = (seed % 30306) + 1;
+    seed = (seed - (seed % 30306)) / 30306;
+    z = (seed % 30322) + 1;
+    seed = (seed - (seed % 30322)) / 30322;
+  }
+  setSeed(newSeed);
+  var result = function random() {
+    x = (171 * x) % 30269;
+    y = (172 * y) % 30307;
+    z = (170 * z) % 30323;
+    if (random.logState) {
+      console.log('x', x, 'y', y, 'z', z);
+    }
+    if (random.storeState) {
+      localStorage.setItem(random.storeState, JSON.stringify([x, y, z]));
+    }
+    return (x / 30269.0 + y / 30307.0 + z / 30323.0) % 1.0;
+  };
+  result.storeState = null;
+  result.setSeed = setSeed;
+  result.pick = function (array) {
+    var index = Math.floor(result() * array.length);
+    return array[index];
+  };
+  result.lowerLetters = "abcdefghijklmnopqrstuvwxyz";
+  result.upperLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  result.letters = result.lowerLetters + result.upperLetters;
+  result.numbers = "0123456789";
+  result.simplePunctuation = " _-+,./";
+  result.extraPunctuation = "!@#$%^&*()=`~[]{};:'\"\\|<>?";
+  result.punctuation = result.simplePunctuation + result.extraPunctuation;
+  result.whitespace = " \n";
+  result.string = function string(letters, length) {
+    letters = letters || result.letters;
+    length = length || 10;
+    var s = "";
+    for (var i=0; i<length; i++) {
+      s += result.pick(letters);
+    }
+    return s;
+  };
+  result.loadState = function (state) {
+    if (state === undefined && ! result.storeState) {
+      return;
+    }
+    if (state === undefined) {
+      state = localStorage.getItem(result.storeState);
+      if (state) {
+        state = JSON.parse(state);
+      } else {
+        return;
+      }
+    }
+    x = state[0];
+    y = state[1];
+    z = state[2];
+  };
+  result.clearState = function () {
+    if (! result.storeState) {
+      return;
+    }
+    localStorage.removeItem(result.storeState);
+  };
+  return result;
+};
+
+Walkabout.random = Walkabout.RandomStream();
+
+/****************************************
+ * Action container:
+ */
+
+Walkabout.Actions = function Actions() {
+};
+
+Walkabout.Actions.prototype = Object.create(Array.prototype);
+
+Walkabout.Actions.prototype.pick = function () {
+  return Walkabout.random.pick(this);
+};
+
+Walkabout.Actions.prototype.runAny = function () {
+  var item = this.pick();
+  item.run.apply(item, arguments);
+};
+
+Walkabout.Actions.prototype.matchingAction = function (eventName, element) {
+  for (var i=0; i<this.length; i++) {
+    var action = this[i];
+    if (action.type == eventName && action.element == element) {
+      return action;
+    }
+  }
+  return null;
+};
+
+Walkabout.Actions.prototype.replaceAction = function (action, newAction) {
+  var found = false;
+  for (var i=0; i<this.length; i++) {
+    if (this[i] === action) {
+      this[i] = newAction;
+      found = true;
+      break;
+    }
+  }
+  if (! found) {
+    throw "Action not found: " + action;
+  }
+};
+
+Walkabout.Actions.prototype.toSource = function () {
+  var items = [];
+  for (var i=0; i<this.length; i++) {
+    items.push(this[i].toSource().replace(/^\(/, "").replace(/\)$/, ""));
+  }
+  return "new Walkabout.Actions(" + items.join(", ") + ")";
+};
+
+
+/****************************************
+ * Replacements for standard methods, to track or mock values:
+ */
+
+Walkabout.addEventListener = function (obj, type, handler, bubbles, options) {
+  obj.addEventListener(type, handler, bubbles || false);
+  if (! obj._Walkabout_handlers) {
+    obj._Walkabout_handlers = {};
+  }
+  if (! obj._Walkabout_handlers[type]) {
+    obj._Walkabout_handlers[type] = [];
+  }
+  obj._Walkabout_handlers[type].push({
+    handler: handler,
+    bubbles: bubbles,
+    type: type,
+    options: options
+  });
+};
+
+Walkabout.removeEventListener = function (obj, type, handler, bubbles) {
+  obj.removeEventListener(type, handler, bubbles || false);
+  var handlers = obj._Walkabout_handlers;
+  if ((! handlers) || ! handlers[type]) {
+    return;
+  }
+  handlers = handlers[type];
+  for (var i=0; i<handlers.length; i++) {
+    if (handlers[i].handler === handler &&
+        handlers[i].type === type &&
+        handlers[i].bubbles === bubbles) {
+      handlers.splice(i, 1);
+      break;
+    }
+  }
+};
+
+Walkabout.actionFinders.push(function customEvents(el, actions) {
+  var els = el.getElementsByTagName("*");
+  for (var i=-1; i<els.length; i++) {
+    var o = i == -1 ? el : els[i];
+    var handlers = o._Walkabout_handlers;
+    if (Walkabout.ignoreElement(o) || ! handlers) {
+      continue;
+    }
+    if (! Walkabout.clickable(o)) {
+      // FIXME: not sure if this is a good general rule
+      continue;
+    }
+    for (var eventName in handlers) {
+      if (! handlers.hasOwnProperty(eventName)) {
+        continue;
+      }
+      for (var j=0; j<handlers[eventName].length; j++) {
+        var handler = handlers[eventName][j];
+        var specific = [o];
+        if (handler.options && handler.options.selector) {
+          specific = o.querySelectorAll(handler.options.selector);
+        }
+        for (var k=0; k<specific.length; k++) {
+          actions.push(Walkabout.EventAction({
+            element: specific[k],
+            type: eventName,
+            handler: handler.handler,
+            options: handler.options
+          }));
+        }
+      }
+    }
+  }
+});
+
+Walkabout.value = function (obj) {
+  var curValue = obj.value;
+  if (! Walkabout.inTesting) {
+    return curValue;
+  }
+  if (! obj || (! obj.tagName)) {
+    return curValue;
+  }
+  if (obj.getAttribute && obj.getAttribute("data-walkabout-disable")) {
+    return curValue;
+  }
+  if ((! obj.tagName) ||
+      (obj.tagName != "INPUT" && obj.tagName == "TEXTAREA" && obj.tagName == "SELECT")) {
+    return curValue;
+  }
+  if (obj.tagName == "INPUT" && Walkabout._getType(obj) == "hidden") {
+    return curValue;
+  }
+  var options = obj.getAttribute("data-walkabout-options");
+  if (options) {
+    options = eval("(" + options + ")");
+  }
+  if ((! options) && obj.tagName == "INPUT" && Walkabout._getType(obj) == "checkbox") {
+    // FIXME: need to override .checked
+    return curValue;
+  }
+  if ((! options) && obj.tagName == "SELECT") {
+    var els = obj.querySelectorAll("option");
+    options = [];
+    for (var i=0; i<els.length; i++) {
+      var option = els[i];
+      if (option.disabled) {
+        continue;
+      }
+      options.push(option.value);
+    }
+  }
+  // FIXME: Should check other types too
+  if (! options) {
+    options = Walkabout.random.letters;
+  }
+  if (Array.isArray(options)) {
+    return Walkabout.random.pick(options);
+  } else if (typeof options == "function") {
+    return options(obj);
+  } else if (typeof options == "string") {
+    var length = obj.getAttribute("size") || 10;
+    length = parseInt(length, 10);
+    return Walkabout.random.string(options, length);
+  } else {
+    return curValue;
+  }
+};
+
+Walkabout._getType = function (obj) {
+  if ((! obj) || (! obj.getAttribute)) {
+    return null;
+  }
+  var value = obj.getAttribute("type");
+  if (value) {
+    value = value.toLowerCase();
+  }
+  return value;
+};
+
+Walkabout.injectModules = function (modules) {
+  if (modules.esprima) {
+    esprima = modules.esprima;
+  }
+  if (modules.falafel) {
+    falafel = modules.falafel;
+  }
+};
+
+Walkabout.rewriteListeners = function (code) {
+  if (typeof esprima == "undefined") {
+    if (typeof require != "undefined") {
+      exprima = require("esprima");
+    } else {
+      throw "You must install or include esprima.js";
+    }
+  }
+  if (typeof falafel == "undefined") {
+    if (typeof require != "undefined") {
+      falafel = require("falafel");
+    } else {
+      throw "You must install or include falafel.js";
+    }
+  }
+  var result = falafel(code, function (node) {
+    if (node.type == "CallExpression" &&
+        node.callee && node.callee.property &&
+        (node.callee.property.name == "addEventListener" ||
+         node.callee.property.name == "removeEventListener")) {
+      if (node.callee.object.source() == "Walkabout") {
+        // Already fixed source
+        return;
+      }
+      var args = [];
+      node["arguments"].forEach(function (n) {
+        args.push(n.source());
+      });
+      node.update(
+        "Walkabout." + node.callee.property.name +
+        "(" + node.callee.object.source() +
+        ", " + args.join(", ") + ")");
+    }
+    if (node.type == "MemberExpression" &&
+        (! node.computed) &&
+        node.property && node.property.name == "value" &&
+        node.parent && node.parent.type != "AssignmentExpression") {
+      if (node.object.source() == "Walkabout") {
+        // Already fixed
+        return;
+      }
+      node.update(
+        "Walkabout.value(" + node.object.source() + ")");
+    }
+  });
+  return result.toString();
+};
+
+Walkabout.rewriteHtml = function (code, scriptLocation, extra) {
+  var start, rest;
+  extra = extra || "";
+  if (scriptLocation.search(/[<>"]/) != -1) {
+    throw "Bad scriptLocation: " + scriptLocation;
+  }
+  var header = '<!--WALKABOUT--><scr' + 'ipt src="' + scriptLocation + '"></scr' + 'ipt>' +
+    extra + '<!--/WALKABOUT-->';
+  var match = (/<!--WALKABOUT-->[^]*<!--\/WALKABOUT-->/).exec(code);
+  if (match) {
+    start = code.substr(0, match.index);
+    rest = code.substr(match.index + match[0].length);
+    code = start + rest;
+  }
+  match = (/<head[^>]*>/i).exec(code);
+  if (! match) {
+    return code;
+  }
+  var endPos = match.index + match[0].length;
+  start = code.substr(0, endPos);
+  rest = code.substr(endPos);
+  return start + header + rest;
+};
+
+/****************************************
+ * UI
+ */
+
+Walkabout.UI = Walkabout.Class({
+
+  constructor: function UI() {
+    this.panel = this.make("div", {
+      style: this.styles.panel,
+      "data-walkabout-disable": 1
+    }, [
+
+      this.closeButton = this.make(
+        "span",
+        {
+          style: this.styles.close
+        },
+        ["\xd7"]
+      ),
+
+      this.make("div", {style: this.styles.header}, ["Walkabout"]),
+
+      this.make(
+        "div",
+        {},
+        ["Actions: ",
+         this.actionsField = this.make(
+           "span",
+           {style: this.styles.actions},
+           ["?"]),
+         " Runs: ",
+         this.runField = this.make(
+           "span",
+           {style: this.styles.actions},
+           ["- / -"])
+        ]),
+
+      this.issues = this.make(
+        "div",
+        {style: this.styles.issues},
+        [
+          this.make("div", {"data-issues-header": 1, style: this.styles.issuesHeader}, ["Issues:"])
+        ]),
+
+      this.startButton = this.make(
+        "button",
+        {style: this.styles.start}, ["start"]
+      ),
+
+      this.onceButton = this.make(
+        "button",
+        {style: this.styles.start}, ["run once"]
+      ),
+
+      this.showButton = this.make(
+        "button",
+        {style: this.styles.start}, ["show"]
+      )
+
+    ]);
+    document.body.appendChild(this.panel);
+    this.close = this.close.bind(this);
+    this.start = this.start.bind(this);
+    this.show = this.show.bind(this);
+    this.updateActions = this.updateActions.bind(this);
+    this.addIssue = this.addIssue.bind(this);
+    this.closeButton.addEventListener("click", this.close, false);
+    this.startButton.addEventListener("click", this.start, false);
+    this.startButton.disabled = false;
+    this.onceButton.addEventListener("click", (function (event) {
+      this.start(event, 1);
+    }).bind(this), false);
+    this.showButton.addEventListener("click", this.show, false);
+    this.onceButton.disabled = false;
+    this.updateActionsId = setInterval(this.updateActions, 5000);
+    this.updateActions();
+    this.catchIssues();
+    if (Walkabout.options.loadPersistent) {
+      var data = Walkabout.persistentData();
+      // Ignore data older than 30 minutes:
+      // FIXME: should probably still load up the console even if it's old
+      if (data.startAtRemaining) {
+        if ((Date.now() - data.savedAt) < 30*60*1000 ) {
+          this.start();
+        } else if (data.console) {
+          this.issueSerialization(data.console);
+          this.addIssue("Not continuing (out of date session)");
+        }
+      } else if (data.console) {
+        this.issueSerialization(data.console);
+        this.addIssue("done.");
+      }
+    }
+  },
+
+  styles: {
+    panel: "color: #000; background-color: #ffc; border: 3px outset #aa9; border-radius: 4px; position: fixed; top: 0.3em; right: 0.3em; padding: 0.7em; width: 20%; z-index: 10000; font-family: sans-serif;",
+    start: "color: #000; background-color: #eee; border: 2px outset #999; border-radius: 2px; padding: 4px; margin-right: 2px;",
+    close: "cursor: pointer; float: right;",
+    header: "font-size: 110%; font-weight: bold; border-bottom: 1px solid #aa9; margin-bottom: 6px;",
+    actions: "border: 2px solid #000; padding: 0 0.5em 0 0.5em;",
+    issues: "max-height: 5em; overflow-y: auto; overflow: auto; border: 2px solid #000; margin: 4px 0 4px 0; font-size: 80%; padding-bottom: 8px;",
+    issuesHeader: "font-weight: bold"
+  },
+
+  make: function (name, attrs, children) {
+    var el = document.createElement(name);
+    if (attrs) {
+      for (var a in attrs) {
+        if (attrs.hasOwnProperty(a)) {
+          el.setAttribute(a, attrs[a]);
+        }
+      }
+    }
+    if (children) {
+      for (var i=0; i<children.length; i++) {
+        var child = children[i];
+        if (typeof child == "string") {
+          child = document.createTextNode(child);
+        }
+        el.appendChild(child);
+      }
+    }
+    return el;
+  },
+
+  close: function () {
+    if (this.canceler) {
+      this.canceler();
+    }
+    clearTimeout(this.updateActionsId);
+    this.updateActionsId = null;
+    this.panel.parentNode.removeChild(this.panel);
+    if (Walkabout.options.loadPersistent) {
+      Walkabout.persistentData(null);
+    }
+  },
+
+  start: function (event, times) {
+    this.startButton.innerHTML = "running";
+    this.startButton.disabled = true;
+    if (Walkabout.jQueryAvailable) {
+      Walkabout.$.fn.val.patch();
+    }
+    this._lastCount = -1;
+    var startAtRemaining;
+    var persist = Walkabout.options.loadPersistent;
+    var seeded = false;
+    if (persist) {
+      var data = Walkabout.persistentData();
+      startAtRemaining = data.startAtRemaining;
+      if (data.console) {
+        this.issueSerialization(data.console);
+      }
+      if (data.seeded) {
+        seeded = true;
+      }
+      Walkabout.random.storeState = "walkabout.randomstate";
+    }
+    if ((! seeded) && times > 1) {
+      var seed = Date.now();
+      Walkabout.random.setSeed(seed);
+      this.addIssue("Starting run with seed: " + seed);
+    }
+    this.canceler = Walkabout.runManyActions({
+      ondone: (function () {
+        this.startButton.innerHTML = "start";
+        this.startButton.disabled = false;
+        this.runField.innerHTML = "- / -";
+        if (Walkabout.jQueryAvailable) {
+          Walkabout.$.fn.val.unpatch();
+        }
+        if (persist) {
+          Walkabout.persistentData({
+            console: this.issueSerialization(),
+            savedAt: Date.now()
+          });
+        }
+      }).bind(this),
+      onstatus: (function (status) {
+        if (status.actions.length != this._lastCount) {
+          this._lastCount = status.actions.length;
+          this.updateActions(status.actions);
+        }
+        this.runField.textContent = (status.times - status.remaining) + " / " + status.times;
+        if (persist) {
+          var data = {
+            startAtRemaining: status.remaining,
+            console: this.issueSerialization(),
+            savedAt: Date.now(),
+            seeded: true
+          };
+          Walkabout.persistentData(data);
+        }
+      }).bind(this),
+      times: times,
+      startAtRemaining: startAtRemaining
+    });
+  },
+
+  show: function () {
+    if (this._showing) {
+      this.showButton.innerHTML = "show";
+      this._showing.forEach(function (item) {
+        if (item) {
+          item.remove();
+        }
+      });
+      this._showing = null;
+      return;
+    }
+    this.showButton.innerHTML = "hide";
+    var showing = this._showing = [];
+    var actions = Walkabout.findActions();
+    actions.forEach(function (a) {
+      showing.push(a.show());
+    });
+  },
+
+  updateActions: function (actions) {
+    actions = actions || Walkabout.findActions();
+    this.actionsField.innerHTML = "";
+    this.actionsField.appendChild(document.createTextNode(actions.length));
+  },
+
+  addIssue: function () {
+    var div = this.make("div", {}, arguments);
+    this.issues.appendChild(div);
+    this.issues.childNodes[this.issues.childNodes.length - 1].scrollIntoView();
+  },
+
+  issueSerialization: function (value) {
+    var i;
+    if (value === undefined) {
+      var result = [];
+      for (i=0; i<this.issues.childNodes.length; i++) {
+        var child = this.issues.childNodes[i];
+        if (child.getAttribute("data-issues-header")) {
+          continue;
+        }
+        result.push(this.issues.childNodes[i].textContent);
+      }
+      return result;
+    } else {
+      for (i=0; i<value.length; i++) {
+        if (value[i] == "Issues:") throw "Issues in serialization :(";
+        this.addIssue(value[i]);
+      }
+      return value;
+    }
+  },
+
+  catchIssues: function () {
+    var oldOnError = window.onerror;
+    window.onerror = (function (errorMessage, url, lineNumber) {
+      this.addIssue(errorMessage + " in " + url + ":" + lineNumber);
+      if (oldOnError) {
+        return oldOnError(errorMessage, url, lineNumber);
+      }
+      return false;
+    }).bind(this);
+    function bind(context, obj, prop, message) {
+      var orig = obj[prop];
+      obj[prop] = function () {
+        var args = [message].concat(Array.prototype.slice.call(arguments, 0));
+        context.addIssue.apply(context, args);
+        orig.apply(obj, arguments);
+      };
+      obj[prop].orig = orig;
+    }
+    bind(this, console, "warn", "WARN: ");
+    bind(this, console, "error", "ERROR: ");
+  }
+
+});
+
+Walkabout.makeBookmarklet = function () {
+  var scripts = document.querySelectorAll("script");
+  var walkaboutSrc;
+  for (var i=0; i<scripts.length; i++) {
+    var src = scripts[i].src;
+    if (src.indexOf("walkabout.js") != -1) {
+      walkaboutSrc = src;
+      break;
+    }
+  }
+  if (! walkaboutSrc) {
+    return "javascript:alert('Could not find script.')";
+  }
+  // Cache bust on localhost
+  var cacheBust = walkaboutSrc.indexOf("localhost") != -1;
+  var s = [
+    "(function () {",
+    "var _s = document.getElementById('walkabout_script');",
+    "if (_s) _s.parentNode.removeChild(_s);",
+    "_s = document.createElement('script');",
+    "_s.src = '" + walkaboutSrc + "'",
+    (cacheBust ? " + '?cachebust=' + Date.now()" : ""),
+    ";",
+    "_Walkabout_start_UI = true;",
+    "document.head.appendChild(_s);",
+    "})();void(0);"
+  ];
+  s = s.join("");
+  s = "javascript:" + encodeURIComponent(s);
+  return s;
+};
+
+/****************************************
+ * History handling
+ */
+
+if (typeof location != "undefined") {
+  Walkabout.hashHistory = [location.hash];
+}
+
+if (typeof window != "undefined") {
+  window.addEventListener("hashchange", function () {
+    var hash = location.hash;
+    if (Walkabout.hashHistory.length > 1 &&
+        Walkabout.hashHistory[Walkabout.hashHistory.length - 2] == hash) {
+      // Someone just hit back (or at least that's what we'll pretend it is)
+      Walkabout.hashHistory.splice(Walkabout.hashHistory.length - 1, 1);
+    } else {
+      Walkabout.hashHistory.push(hash);
+    }
+  }, false);
+}
+
+Walkabout.actionFinders.push(function backFromHash(el, actions) {
+  if (el !== document && el !== window) {
+    return;
+  }
+  if (Walkabout.hashHistory.length > 1) {
+    // FIXME: there should be a way to suppress this from happening
+    actions.push(Walkabout.Back());
+  }
+});
+
+Walkabout.Back = Walkabout.Class({
+  constructor: function Back() {
+  },
+
+  show: function () {
+    return Walkabout.Notifier("Go back");
+  },
+
+  description: function () {
+    return "Go back";
+  },
+
+  run: Walkabout.setInTesting(function () {
+    window.history.back();
+  })
+});
+
+/****************************************
+ * Secret activation!
+ */
+
+Walkabout.activationSequence = "walkabout";
+
+Walkabout.activationSequenceIndex = 0;
+
+if (typeof document != "undefined") {
+  document.addEventListener("keypress", function (event) {
+    var index = Walkabout.activationSequenceIndex;
+    var seq = Walkabout.activationSequence;
+    var expected = seq.charCodeAt(index);
+    if (event.keyCode == expected) {
+      index++;
+    } else if (event.keyCode == seq.charCodeAt(0)) {
+      index = 1;
+    } else {
+      index = 0;
+    }
+    if (index >= seq.length) {
+      index = 0;
+      Walkabout.UI();
+    }
+    Walkabout.activationSequenceIndex = index;
+  }, false);
+}
+
+/****************************************
+ * Mock APIs:
+ */
+
+var mockTelephony = {
+
+  muted: false,
+  speakerEnabled: true,
+  active: null,
+  calls: [],
+  conferenceGroup: null,
+  startTone: function (tone) {
+  },
+  stopTone: function () {
+  },
+  onincoming: null,
+  oncallschanged: null
+
+};
+
+var mockCall = {
+  number: null, // string
+  // "dialing", "alerting", "busy", "connecting", "connected", "disconnecting",
+  // "disconnected", "incoming", "holding", "held", "resuming"
+  state: null,
+  group: null,
+  answer: function () {
+  },
+  hangUp: function () {
+  },
+  hold: function () {
+  },
+  resume: function () {
+  },
+  onstatechange: null,
+  onalerting: null,
+  onbusy: null,
+  onconnecting: null,
+  onconnected: null,
+  ondisconnecting: null,
+  ondisconnected: null,
+  onincoming: null,
+  onholding: null,
+  onheld: null,
+  onresuming: null,
+  ongroupchange: null
+};
+
+var mockCallGroup = {
+  // Array of all calls that are currently in this group. The length
+  // of this array is never 1.
+  calls: [],
+
+  // Add a call to the callgroup. call2 must not be specified if the
+  // callgroup isn't empty.
+  // If the callgroup is empty both call and call2 must be specified,
+  // and one of them must be in 'held' state and the other in
+  // 'connected' state.
+  // Neither call or call2 can be in 'disconnected' state.
+  add: function (call, call2) {
+  },
+
+  // Removes a call from the callgroup. If this leaves the callgroup with
+  // just one call, then that last call is also removed from the callgroup.
+  remove: function (call) {
+  },
+
+  hold: function () {
+  },
+  // Resuming a group automatically holds any other groups/calls
+  resume: function () {
+  },
+
+  // When this changes, the state of all contained calls changes at the same time
+  state: null,
+
+  onstatechange: null,
+  onconnected: null,
+  onholding: null,
+  onheld: null,
+  onresuming: null,
+  // Fires when the array in the 'calls' property changes.
+  oncallschanged: null
+};
+
+if (typeof exports != "undefined") {
+  // Expect that we are in a node environment
+  Walkabout._extend(exports, Walkabout);
+}
+
+if (typeof _Walkabout_start_UI != "undefined") {
+  if (document.readyState == "complete") {
+    Walkabout.UI();
+  } else {
+    window.addEventListener("load", Walkabout.UI, false);
+  }
+}
+
+if (typeof _Walkabout_sitewide != "undefined") {
+  Walkabout.options.anyLocalLinks = location.pathname.replace(/\/[^\/]*$/, "/");
+  Walkabout.options.loadPersistent = true;
+}
+
+return Walkabout;
+
+}
+
+// Wherein we support a variety of module systems:
+//   exports for CommonJS/Node
+//   define for RequireJS
+//   nothing to export Walkabout
+if (typeof exports != "undefined") {
+  init(exports);
+} else if (typeof define != "undefined") {
+  define(init);
+} else {
+  Walkabout = {};
+  init(Walkabout);
+}
+
+})();
diff --git a/v3/js/togetherjs/togetherjs/libs/whrandom/mersenne.js b/v3/js/togetherjs/togetherjs/libs/whrandom/mersenne.js
new file mode 100644
index 000000000..e92a47534
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/whrandom/mersenne.js
@@ -0,0 +1,279 @@
+// this program is a JavaScript version of Mersenne Twister,
+// a straight conversion from the original program, mt19937ar.c,
+// translated by y. okada on july 17, 2006.
+// and modified a little at july 20, 2006, but there are not any substantial differences.
+// modularized by Ian Bicking, March 25, 2013 (found original version at http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/VERSIONS/JAVASCRIPT/java-script.html)
+// in this program, procedure descriptions and comments of original source code were not removed.
+// lines commented with //c// were originally descriptions of c procedure. and a few following lines are appropriate JavaScript descriptions.
+// lines commented with /* and */ are original comments.
+// lines commented with // are additional comments in this JavaScript version.
+/*
+   A C-program for MT19937, with initialization improved 2002/1/26.
+   Coded by Takuji Nishimura and Makoto Matsumoto.
+
+   Before using, initialize the state by using init_genrand(seed)
+   or init_by_array(init_key, key_length).
+
+   Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura,
+   All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+     1. Redistributions of source code must retain the above copyright
+        notice, this list of conditions and the following disclaimer.
+
+     2. Redistributions in binary form must reproduce the above copyright
+        notice, this list of conditions and the following disclaimer in the
+        documentation and/or other materials provided with the distribution.
+
+     3. The names of its contributors may not be used to endorse or promote
+        products derived from this software without specific prior written
+        permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+   Any feedback is very welcome.
+   http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html
+   email: m-mat @ math.sci.hiroshima-u.ac.jp (remove space)
+*/
+
+(function () {
+
+function RandomStream(seed) {
+
+  /*jshint bitwise:false */
+  /* Period parameters */
+  //c//#define N 624
+  //c//#define M 397
+  //c//#define MATRIX_A 0x9908b0dfUL   /* constant vector a */
+  //c//#define UPPER_MASK 0x80000000UL /* most significant w-r bits */
+  //c//#define LOWER_MASK 0x7fffffffUL /* least significant r bits */
+  var N = 624;
+  var M = 397;
+  var MATRIX_A = 0x9908b0df;   /* constant vector a */
+  var UPPER_MASK = 0x80000000; /* most significant w-r bits */
+  var LOWER_MASK = 0x7fffffff; /* least significant r bits */
+  //c//static unsigned long mt[N]; /* the array for the state vector  */
+  //c//static int mti=N+1; /* mti==N+1 means mt[N] is not initialized */
+  var mt = new Array(N);   /* the array for the state vector  */
+  var mti = N+1;           /* mti==N+1 means mt[N] is not initialized */
+
+  function unsigned32 (n1) // returns a 32-bits unsiged integer from an operand to which applied a bit operator.
+  {
+    return n1 < 0 ? (n1 ^ UPPER_MASK) + UPPER_MASK : n1;
+  }
+
+  function subtraction32 (n1, n2) // emulates lowerflow of a c 32-bits unsiged integer variable, instead of the operator -. these both arguments must be non-negative integers expressible using unsigned 32 bits.
+  {
+    return n1 < n2 ? unsigned32((0x100000000 - (n2 - n1)) & 0xffffffff) : n1 - n2;
+  }
+
+  function addition32 (n1, n2) // emulates overflow of a c 32-bits unsiged integer variable, instead of the operator +. these both arguments must be non-negative integers expressible using unsigned 32 bits.
+  {
+    return unsigned32((n1 + n2) & 0xffffffff);
+  }
+
+  function multiplication32 (n1, n2) // emulates overflow of a c 32-bits unsiged integer variable, instead of the operator *. these both arguments must be non-negative integers expressible using unsigned 32 bits.
+  {
+    var sum = 0;
+    for (var i = 0; i < 32; ++i){
+      if ((n1 >>> i) & 0x1){
+        sum = addition32(sum, unsigned32(n2 << i));
+      }
+    }
+    return sum;
+  }
+
+  /* initializes mt[N] with a seed */
+  //c//void init_genrand(unsigned long s)
+  function init_genrand(s) {
+    //c//mt[0]= s & 0xffffffff;
+    mt[0]= unsigned32(s & 0xffffffff);
+    for (mti=1; mti<N; mti++) {
+      mt[mti] =
+      //c//(1812433253 * (mt[mti-1] ^ (mt[mti-1] >> 30)) + mti);
+      addition32(multiplication32(1812433253, unsigned32(mt[mti-1] ^ (mt[mti-1] >>> 30))), mti);
+      /* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
+      /* In the previous versions, MSBs of the seed affect   */
+      /* only MSBs of the array mt[].                        */
+      /* 2002/01/09 modified by Makoto Matsumoto             */
+      //c//mt[mti] &= 0xffffffff;
+      mt[mti] = unsigned32(mt[mti] & 0xffffffff);
+      /* for >32 bit machines */
+    }
+  }
+
+  /* initialize by an array with array-length */
+  /* init_key is the array for initializing keys */
+  /* key_length is its length */
+  /* slight change for C++, 2004/2/26 */
+  //c//void init_by_array(unsigned long init_key[], int key_length)
+  function init_by_array(init_key, key_length) {
+    //c//int i, j, k;
+    var i, j, k;
+    init_genrand(19650218);
+    i=1; j=0;
+    k = (N>key_length ? N : key_length);
+    for (; k; k--) {
+      //c//mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1664525))
+      //c// + init_key[j] + j; /* non linear */
+      mt[i] = addition32(addition32(unsigned32(mt[i] ^ multiplication32(unsigned32(mt[i-1] ^ (mt[i-1] >>> 30)), 1664525)), init_key[j]), j);
+      mt[i] =
+      //c//mt[i] &= 0xffffffff; /* for WORDSIZE > 32 machines */
+      unsigned32(mt[i] & 0xffffffff);
+      i++; j++;
+      if (i>=N) { mt[0] = mt[N-1]; i=1; }
+      if (j>=key_length) {
+        j=0;
+      }
+    }
+    for (k=N-1; k; k--) {
+      //c//mt[i] = (mt[i] ^ ((mt[i-1] ^ (mt[i-1] >> 30)) * 1566083941))
+      //c//- i; /* non linear */
+      mt[i] = subtraction32(unsigned32((mt[i]) ^ multiplication32(unsigned32(mt[i-1] ^ (mt[i-1] >>> 30)), 1566083941)), i);
+      //c//mt[i] &= 0xffffffff; /* for WORDSIZE > 32 machines */
+      mt[i] = unsigned32(mt[i] & 0xffffffff);
+      i++;
+      if (i>=N) { mt[0] = mt[N-1]; i=1; }
+    }
+    mt[0] = 0x80000000; /* MSB is 1; assuring non-zero initial array */
+  }
+
+  /* generates a random number on [0,0xffffffff]-interval */
+  //c//unsigned long genrand_int32(void)
+  function genrand_int32() {
+    //c//unsigned long y;
+    //c//static unsigned long mag01[2]={0x0UL, MATRIX_A};
+    var y;
+    var mag01 = [0x0, MATRIX_A];
+    /* mag01[x] = x * MATRIX_A  for x=0,1 */
+
+    if (mti >= N) { /* generate N words at one time */
+      //c//int kk;
+      var kk;
+
+      if (mti == N+1) {   /* if init_genrand() has not been called, */
+        init_genrand(Date.now()); /* a default initial seed is used */
+      }
+
+      for (kk=0;kk<N-M;kk++) {
+        //c//y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
+        //c//mt[kk] = mt[kk+M] ^ (y >> 1) ^ mag01[y & 0x1];
+        y = unsigned32((mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK));
+        mt[kk] = unsigned32(mt[kk+M] ^ (y >>> 1) ^ mag01[y & 0x1]);
+      }
+      for (;kk<N-1;kk++) {
+        //c//y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
+        //c//mt[kk] = mt[kk+(M-N)] ^ (y >> 1) ^ mag01[y & 0x1];
+        y = unsigned32((mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK));
+        mt[kk] = unsigned32(mt[kk+(M-N)] ^ (y >>> 1) ^ mag01[y & 0x1]);
+      }
+      //c//y = (mt[N-1]&UPPER_MASK)|(mt[0]&LOWER_MASK);
+      //c//mt[N-1] = mt[M-1] ^ (y >> 1) ^ mag01[y & 0x1];
+      y = unsigned32((mt[N-1]&UPPER_MASK)|(mt[0]&LOWER_MASK));
+      mt[N-1] = unsigned32(mt[M-1] ^ (y >>> 1) ^ mag01[y & 0x1]);
+      mti = 0;
+    }
+
+    y = mt[mti++];
+
+    /* Tempering */
+    //c//y ^= (y >> 11);
+    //c//y ^= (y << 7) & 0x9d2c5680;
+    //c//y ^= (y << 15) & 0xefc60000;
+    //c//y ^= (y >> 18);
+    y = unsigned32(y ^ (y >>> 11));
+    y = unsigned32(y ^ ((y << 7) & 0x9d2c5680));
+    y = unsigned32(y ^ ((y << 15) & 0xefc60000));
+    y = unsigned32(y ^ (y >>> 18));
+
+    return y;
+  }
+
+  /* generates a random number on [0,0x7fffffff]-interval */
+  //c//long genrand_int31(void)
+  function genrand_int31() {
+    //c//return (genrand_int32()>>1);
+    return (genrand_int32()>>>1);
+  }
+
+  /* generates a random number on [0,1]-real-interval */
+  //c//double genrand_real1(void)
+  function genrand_real1() {
+    return genrand_int32()*(1.0/4294967295.0);
+    /* divided by 2^32-1 */
+  }
+
+  /* generates a random number on [0,1)-real-interval */
+  //c//double genrand_real2(void)
+  function genrand_real2() {
+    return genrand_int32()*(1.0/4294967296.0);
+    /* divided by 2^32 */
+  }
+
+  /* generates a random number on (0,1)-real-interval */
+  //c//double genrand_real3(void)
+  function genrand_real3() {
+    return ((genrand_int32()) + 0.5)*(1.0/4294967296.0);
+    /* divided by 2^32 */
+  }
+
+  /* generates a random number on [0,1) with 53-bit resolution*/
+  //c//double genrand_res53(void)
+  function genrand_res53() {
+    //c//unsigned long a=genrand_int32()>>5, b=genrand_int32()>>6;
+    var a=genrand_int32()>>>5, b=genrand_int32()>>>6;
+    return (a*67108864.0+b)*(1.0/9007199254740992.0);
+  }
+  /* These real versions are due to Isaku Wada, 2002/01/09 added */
+
+  var random = genrand_real2;
+
+  random.seed = function (seed) {
+    if (! seed) {
+      seed = Date.now();
+    }
+    if (typeof seed != "number") {
+      seed = parseInt(seed, 10);
+    }
+    if ((seed !== 0 && ! seed) || isNaN(seed)) {
+      throw "Bad seed";
+    }
+    init_genrand(seed);
+  };
+
+  random.seed(seed);
+
+  random.int31 = genrand_int31;
+  random.real1 = genrand_real1;
+  random.real2 = genrand_real2;
+  random.real3 = genrand_real3;
+  random.res53 = genrand_res53;
+
+  return random;
+
+}
+
+// Support for AMD/requirejs, CommonJS/Node, and no module system:
+if (typeof define != "undefined") {
+  define([], function () {return RandomStream;});
+} else if (typeof module != "undefined") {
+  module.exports = RandomStream;
+} else {
+  window.MersenneRandomStream = RandomStream;
+}
+
+})();
diff --git a/v3/js/togetherjs/togetherjs/libs/whrandom/random.js b/v3/js/togetherjs/togetherjs/libs/whrandom/random.js
new file mode 100644
index 000000000..aefe04ca4
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/whrandom/random.js
@@ -0,0 +1,39 @@
+(function () {
+
+function RandomStream(seed) {
+  if (! seed) {
+    seed = Date.now();
+  }
+  if (typeof seed != "number") {
+    seed = parseInt(seed, 10);
+  }
+  if ((! seed) || isNaN(seed)) {
+    throw "Bad seed";
+  }
+  var x = (seed % 30268) + 1;
+  seed = (seed - (seed % 30268)) / 30268;
+  var y = (seed % 30306) + 1;
+  seed = (seed - (seed % 30306)) / 30306;
+  var z = (seed % 30322) + 1;
+  seed = (seed - (seed % 30322)) / 30322;
+  return function random() {
+    x = (171 * x) % 30269;
+    y = (172 * y) % 30307;
+    z = (170 * z) % 30323;
+    if (random.logState) {
+      console.log('x', x, 'y', y, 'z', z);
+    }
+    return (x / 30269.0 + y / 30307.0 + z / 30323.0) % 1.0;
+  };
+}
+
+// Support for AMD/requirejs, CommonJS/Node, and no module system:
+if (typeof define != "undefined") {
+  define([], function () {return RandomStream;});
+} else if (typeof module != "undefined") {
+  module.exports = RandomStream;
+} else {
+  window.WHRandomStream = RandomStream;
+}
+
+})();
diff --git a/v3/js/togetherjs/togetherjs/libs/whrandom/test_random.html b/v3/js/togetherjs/togetherjs/libs/whrandom/test_random.html
new file mode 100644
index 000000000..cdace8ca5
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/whrandom/test_random.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Test RandomStream</title>
+    <meta charset="UTF-8">
+    <script src="random.js"></script>
+    <script src="mersenne.js"></script>
+    <script src="http://doctestjs.org/doctest.js"></script>
+    <link rel="stylesheet" href="http://doctestjs.org/doctest.css">
+  </head>
+  <body class="autodoctest">
+
+    <p>Tests will run automatically:</p>
+
+    <pre class="commenttest" href="test_random.js">
+    </pre>
+
+  </body>
+</html>
diff --git a/v3/js/togetherjs/togetherjs/libs/whrandom/test_random.js b/v3/js/togetherjs/togetherjs/libs/whrandom/test_random.js
new file mode 100644
index 000000000..b81f56a06
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/libs/whrandom/test_random.js
@@ -0,0 +1,95 @@
+//==SECTION WHRandom
+
+jshint("random.js");
+// => Script passed: ...
+
+var random = WHRandomStream(1);
+random.logState = true;
+
+print(random());
+
+// => 0.02258025041320865
+
+random = WHRandomStream(61731 + (24903<<32) + (614<<64) + (42143<<96));
+for (var i=0; i<1990; i++) {
+  // Throw away the first 1990 results
+  random();
+}
+for (var i=0; i<10; i++) {
+  print(random());
+}
+
+/* =>
+0.509619534765086
+0.46840731249967416
+0.6477464858997404
+0.7262869907208884
+0.26678101301184265
+0.8506177950611828
+0.807989512174746
+0.34070112203493075
+0.3237063277558945
+0.9579732082997315
+*/
+
+random = WHRandomStream(61731 + (24903<<32) + (614<<64) + (42143<<96));
+for (var i=0; i<1990; i++) {
+  // Throw away the first 1990 results
+  random();
+}
+for (var i=0; i<10; i++) {
+  print(random());
+}
+
+/* =>
+0.509619534765086
+0.46840731249967416
+0.6477464858997404
+0.7262869907208884
+0.26678101301184265
+0.8506177950611828
+0.807989512174746
+0.34070112203493075
+0.3237063277558945
+0.9579732082997315
+*/
+
+var random1 = WHRandomStream();
+wait(10);
+// =>
+var random2 = WHRandomStream();
+print(random1() == random2());
+
+// => false
+
+//==SECTION Mersenne Twister
+
+random = MersenneRandomStream(61731 + (24903<<32) + (614<<64) + (42143<<96));
+for (var i=0; i<1990; i++) {
+  // Throw away the first 1990 results
+  random();
+}
+for (var i=0; i<10; i++) {
+  print(random());
+}
+
+/* =>
+0.36614991538226604
+0.7007313468493521
+0.053458782844245434
+0.7753883530385792
+0.27555248513817787
+0.16756457393057644
+0.8208331714849919
+0.014290706953033805
+0.8880474304314703
+0.9676008424721658
+*/
+
+var random1 = MersenneRandomStream();
+wait(10);
+// =>
+var random2 = MersenneRandomStream();
+print(random1() == random2());
+
+// => false
diff --git a/v3/js/togetherjs/togetherjs/linkify.js b/v3/js/togetherjs/togetherjs/linkify.js
new file mode 100644
index 000000000..389fdda33
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/linkify.js
@@ -0,0 +1,53 @@
+define([], function () {
+  // FIXME: this could be moved to a different module, it's pretty stand-alone
+  /* Finds any links in the text of an element (or its children) and turns them
+     into anchors (with target=_blank) */
+  function linkify(el) {
+    if (el.jquery) {
+      el = el[0];
+    }
+    el.normalize();
+    function linkifyNode(node) {
+      var _len = node.childNodes.length;
+      for (var i=0; i<_len; i++) {
+        if (node.childNodes[i].nodeType == document.ELEMENT_NODE) {
+          linkifyNode(node.childNodes[i]);
+        }
+      }
+      var texts = [];
+      for (i=0; i<_len; i++) {
+        if (node.childNodes[i].nodeType == document.TEXT_NODE) {
+          texts.push(node.childNodes[i]);
+        }
+      }
+      texts.forEach(function (item) {
+        if (item.nodeType == document.ELEMENT_NODE) {
+          linkifyNode(item);
+        } else if (item.nodeType == document.TEXT_NODE) {
+          while (true) {
+            var text = item.nodeValue;
+            var regex = /\bhttps?:\/\/[a-z0-9\.\-_](:\d+)?[^ \n\t<>()\[\]]*/i;
+            var match = regex.exec(text);
+            if (! match) {
+              break;
+            }
+            var leadingNode = document.createTextNode(text.substr(0, match.index));
+            node.replaceChild(leadingNode, item);
+            var anchor = document.createElement("a");
+            anchor.setAttribute("target", "_blank");
+            anchor.href = match[0];
+            anchor.appendChild(document.createTextNode(match[0]));
+            node.insertBefore(anchor, leadingNode.nextSibling);
+            var trailing = document.createTextNode(text.substr(match.index + match[0].length));
+            node.insertBefore(trailing, anchor.nextSibling);
+            item = trailing;
+          }
+        }
+      });
+    }
+    linkifyNode(el);
+    return el;
+  }
+
+  return linkify;
+});
diff --git a/v3/js/togetherjs/togetherjs/locale/en-US.json b/v3/js/togetherjs/togetherjs/locale/en-US.json
new file mode 100644
index 000000000..789b8b990
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/locale/en-US.json
@@ -0,0 +1,89 @@
+{
+  "Activate your <strong>browser microphone</strong> near your URL bar above.": "Activate your <strong>browser microphone</strong> near your URL bar above.",
+  "Add a friend": "Add a friend",
+  "Alright, you're ready to use TOOL_NAME. Now start collaborating on SITE_NAME!": "Alright, you're ready to use TOOL_NAME. Now start collaborating on SITE_NAME!",
+  "anyone": "anyone",
+  "Are you sure you'd like to end your TOOL_NAME session?": "Are you sure you'd like to end your TOOL_NAME session?",
+  "Audio chat requires you to use a <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>newer browser</a>!": "Audio chat requires you to use a <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>newer browser</a>!",
+  "Audio Chat": "Audio Chat",
+  "Cancel": "Cancel",
+  "Change avatar": "Change avatar",
+  "Change your avatar, name and user color using the Profile button.": "Change your avatar, name and user color using the Profile button.",
+  "Chat": "Chat",
+  "Close": "Close",
+  "Copy and paste this link into IM or email to invite friends.": "Copy and paste this link into IM or email to invite friends.",
+  "Copy and paste this link over IM or email:": "Copy and paste this link over IM or email:",
+  "Currently at:": "Currently at:",
+  "declined to join the session.": "declined to join the session.",
+  "Don't show again.": "Don't show again.",
+  "End session": "End session",
+  "End session?": "End session?",
+  "End TOOL_NAME": "End TOOL_NAME",
+  "End": "End",
+  "Enter your name": "Enter your name",
+  "Feedback": "Feedback",
+  "Follow this participant:": "Follow this participant:",
+  "Follow:": "Follow:",
+  "Following to new URL...": "Following to new URL...",
+  "Following": "Following",
+  "Friends who join your TOOL_NAME session will appear here.  You can click their avatars to see more.": "Friends who join your TOOL_NAME session will appear here.  You can click their avatars to see more.",
+  "has gone to:": "has gone to:",
+  "has invited": "has invited",
+  "Help": "Help",
+  "here": "here",
+  "I'm ready!": "I'm ready!",
+  "If your browser supports it, click the microphone icon to begin a audio chat. Learn more about this experimental feature <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.": "If your browser supports it, click the microphone icon to begin a audio chat. Learn more about this experimental feature <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.",
+  "Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.": "Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.",
+  "Internet Explorer <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer'> is not supported</a> and won't be supported in the near term, please use Firefox or Chrome.": "Internet Explorer <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer'> is not supported</a> and won't be supported in the near term, please use Firefox or Chrome.",
+  "Invite a friend": "Invite a friend",
+  "Invite anyone": "Invite anyone",
+  "is on the same page as you.": "is on the same page as you.",
+  "Join them": "Join them",
+  "Join TOOL_NAME session?": "Join TOOL_NAME session?",
+  "joined the session.": "joined the session.",
+  "left the session.": "left the session.",
+  "Live audio chat requires a newer (or different) browser than you're using.": "Live audio chat requires a newer (or different) browser than you're using.",
+  "Loading form...": "Loading form...",
+  "Move the dock": "Move the dock",
+  "names": "Friendly Fox, Brilliant Beaver, Observant Owl, Gregarious Giraffe, Wild Wolf, Silent Seal, Wacky Whale, Curious Cat, Intelligent Iguana",
+  "No one else is here.": "No one else is here.",
+  "No, don't join": "No, don't join",
+  "Nudge them": "Nudge them",
+  "OK": "OK",
+  "or": "or",
+  "Participants": "Participants",
+  "Pick profile color": "Pick profile color",
+  "Read more about Audio Chat": "Read more about Audio Chat",
+  "refresh users": "refresh users",
+  "Role:": "Role:",
+  "Save": "Save",
+  "Saved!": "Saved!",
+  "See <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>this page</a>for more information and a list of supported browsers.": "See <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>this page</a>for more information and a list of supported browsers.",
+  "Send the above link to a friend so they can join your session!  You can find this invite link on the TOOL_NAME dock as well.": "Send the above link to a friend so they can join your session!  You can find this invite link on the TOOL_NAME dock as well.",
+  "Set up your avatar, name and user color above.  If you'd like to update it later, you can click your Profile button.": "Set up your avatar, name and user color above.  If you'd like to update it later, you can click your Profile button.",
+  "Settings and Profile": "Settings and Profile",
+  "Sorry": "Sorry",
+  "Status:": "Status:",
+  "Talking on your microphone through your web browser is an experimental feature.": "Talking on your microphone through your web browser is an experimental feature.",
+  "This is you": "This is you",
+  "to": "to",
+  "TOOL_NAME is a service for your website that makes it easy to collaborate in real-time on SITE_NAME": "TOOL_NAME is a service for your website that makes it easy to collaborate in real-time on SITE_NAME",
+  "Try TOOL_NAME Anyway": "Try TOOL_NAME Anyway",
+  "Turn on microphone": "Turn on microphone",
+  "Type your message here": "Type your message here",
+  "Unsupported Browser": "Unsupported Browser",
+  "Update avatar": "Update avatar",
+  "Update Name": "Update Name",
+  "Update your name": "Update your name",
+  "We're sorry, TOOL_NAME doesn't work with this browser.  Please <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>upgrade to a supported browser</a> to try TOOL_NAME.": "We're sorry, TOOL_NAME doesn't work with this browser.  Please <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>upgrade to a supported browser</a> to try TOOL_NAME.",
+  "We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.": "We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.",
+  "When your friends join you in your TOOL_NAME session, you can chat with them here!": "When your friends join you in your TOOL_NAME session, you can chat with them here!",
+  "Would you like to join their session?": "Would you like to join their session?",
+  "Yes, join session": "Yes, join session",
+  "You can continue to try to use TOOL_NAME, but you are likely to hit lots of bugs.  So be warned.": "You can continue to try to use TOOL_NAME, but you are likely to hit lots of bugs.  So be warned.",
+  "You can invite more friends to the session by sending the invite link in the TOOL_NAME dock.": "You can invite more friends to the session by sending the invite link in the TOOL_NAME dock.",
+  "You": "You",
+  "you": "you",
+  "You're using TOOL_NAME!": "You're using TOOL_NAME!",
+  "Your friend has asked you to join their TOOL_SITE_LINK browser session to collaborate in real-time!": "Your friend has asked you to join their TOOL_SITE_LINK browser session to collaborate in real-time!"
+}
diff --git a/v3/js/togetherjs/togetherjs/locale/ru.json b/v3/js/togetherjs/togetherjs/locale/ru.json
new file mode 100644
index 000000000..d4a3b826e
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/locale/ru.json
@@ -0,0 +1,89 @@
+{
+    "Follow:": "Последовать:",
+    "declined to join the session.": "отказался присоединиться к сеансу.",
+    "Yes, join session": "Да, присоединиться к сеансу",
+    "left the session.": "покинул сеанс.",
+    "Live audio chat requires a newer (or different) browser than you're using.": "Для живого аудио-чата требуется более новый (или другой) браузер, чем тот, который Вы используете.",
+    "Saved!": "Сохранено!",
+    "Role:": "Роль:",
+    "Would you like to join their session?": "Хотели бы Вы присоединиться к его сеансу?",
+    "I'm ready!": "Я готов!",
+    "Loading form...": "Загружаю форму ...",
+    "End TOOL_NAME": "Закончить TOOL_NAME",
+    "to": "на",
+    "You're using TOOL_NAME!": "Вы используете TOOL_NAME!",
+    "Activate your <strong>browser microphone</strong> near your URL bar above.": "Включите <strong>микрофон браузера</strong> возле адресной строки вверху.",
+    "Invite anyone": "Пригласить кого-нибудь",
+    "Currently at:": "Сейчас на:",
+    "you": "Вас",
+    "OK": "Хорошо",
+    "Help": "Помощь",
+    "No one else is here.": "Здесь больше никого нет.",
+    "Set up your avatar, name and user color above.  If you'd like to update it later, you can click your Profile button.": "Задайте свои аватар, имя и пользовательский цвет вверху. При желании изменить их позднее, щёлкните по кнопке Профиль.",
+    "Update Name": "Обновить имя",
+    "Unsupported Browser": "Браузер не поддерживается",
+    "Settings and Profile": "Установки и профиль",
+    "End": "Закончить",
+    "When your friends join you in your TOOL_NAME session, you can chat with them here!": "Когда Ваши друзья присоединятся к Вашему сеансу TOOL_NAME, Вы сможете общаться с ними здесь!",
+    "Join TOOL_NAME session?": "Присоединиться к сеансу TOOL_NAME?",
+    "Add a friend": "Добавить друга",
+    "We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.": "Нам нужна Ваша помощь в починке TogetherJS на Internet Explorer!  Вот список <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">ошибок на GitHub</a>, которые нам нужно починить, и над которыми Вы можете поработать.",
+    "Save": "Сохранить",
+    "is on the same page as you.": "с Вами на одной странице.",
+    "Join them": "Присоединиться к нему",
+    "Friends who join your TOOL_NAME session will appear here.  You can click their avatars to see more.": "Друзья, которые присоединятся к Вашему сеансу TOOL_NAME, появятся здесь. Вы можете щёлкнуть по аватару друга, чтобы увидеть больше информации.",
+    "See <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>this page</a>for more information and a list of supported browsers.": "Посмотрите на <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>'этой странице'</a> дополнительную информацию и список поддерживаемых браузеров.",
+    "Alright, you're ready to use TOOL_NAME. Now start collaborating on SITE_NAME!": "Ну вот Вы и готовы использовать TOOL_NAME. Теперь начинайте сотрудничать на сайте SITE_NAME!",
+    "Read more about Audio Chat": "Почитайте больше об аудио-чате",
+    "Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.": "Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\"> в настоящее время не поддерживается</a>.  Если Вы действительно хотите испытать TogetherJS, советуем Вам использовать Firefox или Chrome.",
+    "here": "здесь",
+    "Status:": "Статус:",
+    "Your friend has asked you to join their TOOL_SITE_LINK browser session to collaborate in real-time!": "Ваш друг просит Вас присоединиться к его TOOL_SITE_LINK браузер-сеансу, чтобы сотрудничать с Вами в реальном времени!",
+    "Copy and paste this link into IM or email to invite friends.": "Скопируйте и приклейте эту ссылку в IM или в имейл, чтобы пригласить друзей.<br>",
+    "Chat": "Чат",
+    "You can continue to try to use TOOL_NAME, but you are likely to hit lots of bugs.  So be warned.": "Вы можете продолжать пробовать использовать TOOL_NAME, но скорее всего Вы получите массу ошибок. Мы Вас предупредили.",
+    "Copy and paste this link over IM or email:": "Скопируйте эту ссылку и приклейте её в IM или в имейл:",
+    "or": "или",
+    "This is you": "Это Вы",
+    "Pick profile color": "Выбрать цвет профиля",
+    "If your browser supports it, click the microphone icon to begin a audio chat. Learn more about this experimental feature <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.": "Если Ваш браузер поддерживает аудио-чат, Вы можете запустить его нажатием на иконку микрофона. Узнайте побольше об этой экспериментальной функции <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">здесь</a>.",
+    "Move the dock": "Передвинуть панель",
+    "Participants": "Участники",
+    "names": "Лысый Лис, Большой Бобёр, Умная Сова, Жирный Жираф, Серый Волк, Толстый Тюлень, Рыба-кит, Кисьян Котяра, Известная Игуана",
+    "Change avatar": "Изменить аватар",
+    "Sorry": "Извините",
+    "has invited": "пригласил",
+    "anyone": "кого-либо",
+    "Internet Explorer <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer'> is not supported</a> and won't be supported in the near term, please use Firefox or Chrome.": "Internet Explorer <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer'> не поддерживается</a> и не будет поддерживаем в ближайшем будущем, просьба использовать Firefox или Chrome.",
+    "You can invite more friends to the session by sending the invite link in the TOOL_NAME dock.": "Вы можете пригласить ещё друзей на Ваш сеанс, послав им ссылку с приглашением на панели TOOL_NAME.",
+    "refresh users": "освежить пользователей",
+    "has gone to:": "отправился на:",
+    "Turn on microphone": "Включить микрофон",
+    "Try TOOL_NAME Anyway": "Всё равно попробовать TOOL_NAME",
+    "Following": "Следую",
+    "Don't show again.": "Больше не показывать.",
+    "We're sorry, TOOL_NAME doesn't work with this browser.  Please <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>upgrade to a supported browser</a> to try TOOL_NAME.": "Извините, TOOL_NAME не работает на этом браузере. Просьба <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>обновиться до поддерживаемого браузера</a>, чтобы попробовать TOOL_NAME.",
+    "Feedback": "Отзывы и предложения",
+    "No, don't join": "Нет, не присоединяться",
+    "Type your message here": "Напечатайте своё сообщение здесь",
+    "Nudge them": "Толкнуть друга",
+    "Cancel": "Отмена",
+    "Close": "Закрыть",
+    "End session?": "Закончить сеанс?",
+    "joined the session.": "присоединился к сеансу.",
+    "Update avatar": "Обновить аватар",
+    "End session": "Закончить сеанс",
+    "Invite a friend": "Пригласить друга",
+    "You": "Вы",
+    "Enter your name": "Введите своё имя",
+    "Audio Chat": "Аудио-чат",
+    "Audio chat requires you to use a <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>newer browser</a>!": "Аудио-чат требует, чтобы Вы использовали<a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>браузер поновее</a>!",
+    "Update your name": "Обновить своё имя",
+    "Send the above link to a friend so they can join your session!  You can find this invite link on the TOOL_NAME dock as well.": "Пошлите другу ссылку вверху, чтобы он мог присоединиться к Вашему сеансу! Вы также можете найти эту ссылку с приглашением на панели TOOL_NAME.",
+    "Change your avatar, name and user color using the Profile button.": "Вы можете изменить свои аватар, имя и пользовательский цвет, используя кнопку Профиль.",
+    "Are you sure you'd like to end your TOOL_NAME session?": "Вы уверены, что хотите завершить свой сеанс TOOL_NAME?",
+    "Follow this participant:": "Следовать за этим участником:",
+    "Following to new URL...": "Следую на новый URL...",
+    "TOOL_NAME is a service for your website that makes it easy to collaborate in real-time on SITE_NAME": "TOOL_NAME - это служба для Вашего сайта, которая помогает Вам сотрудничать с другими в реальном времени на сайте SITE_NAME",
+    "Talking on your microphone through your web browser is an experimental feature.": "Разговор по микрофону через веб-браузер - экспериментальное свойство."
+}
\ No newline at end of file
diff --git a/v3/js/togetherjs/togetherjs/module-descriptions.json b/v3/js/togetherjs/togetherjs/module-descriptions.json
new file mode 100644
index 000000000..173d0f8d0
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/module-descriptions.json
@@ -0,0 +1,32 @@
+{
+  "analytics": "A small bit of code for handling Google Analytics",
+  "channels": "An abstraction over WebSockets and other communication channels (like `postMessage`).",
+  "chat": "Handles the chat messages (except actual display, which is in `ui.js`).",
+  "console": "An console replacement that collects messages and allows TogetherJS-specific log levels",
+  "cursor": "Handles the shared cursors, display and capturing the events.  Also handles clicks and scrolls.  Includes UI.",
+  "elementFinder": "Generates something like a CSS selector for an element, and finds said elements based on selectors.  A portable description of an element.",
+  "eventMaker": "Creates artificial events, like a fake click event.",
+  "forms": "Handles synchronization of forms, including CodeMirror, ACE, CKEditor and tinyMCE Editor support.  Implements a portion of OT.",
+  "jqueryPlugins": "Some plugins for jQuery; doesn't export anything, just patches `$`.",
+  "linkify": "Detects and adds links to plain text.",
+  "ot": "Operational transformation support: what keeps big chunks of text in sync when multiple people are simultaneously editing those fields.",
+  "peers": "Handles the objects representing the peers and oneself.",
+  "playback": "Handles the magic `/playback` command that plays recordings.",
+  "randomutil": "Some functions/methods for random numbers, really just for testing support.",
+  "recorder": "Used by `recorder.html`, which is a kind of alternate mini-client used to record sessions when you put `/record` in the chat box.",
+  "session": "The most important and most core module in the system.  This sets up the channels, routes messages, tracks peers, and is used for inter-module communication using events.",
+  "startup": "Handles the logic of what to display when TogetherJS is first started up (including warning messages, introductory stuff, the share link, confirmation of joining the session).",
+  "storage": "An abstraction (over `localStorage`) of per-tab and client storage.",
+  "templates": "This is generated from `interface.html` and other sources, including the content as inline strings.",
+  "templating": "Handles creating new nodes based on DOM templates.  Does some substitution based on specific class names.",
+  "togetherjs": "This is the bootstrap code.  It is included on all pages, defines the `TogetherJS` variable, and handles configuration and initial loading.",
+  "ui": "This has most of the UI, meaning everything involving HTML, and reacting to that interface.",
+  "util": "Lots of support code in here.  It doesn't depend on other things, and has fairly abstract general-purpose code.  It includes a pattern for creating classes, assertions, events.",
+  "videos.js": "Support for the video sync feature",
+  "visibilityApi": "Handles cross-browser tab visibility events",
+  "walkthrough": "Implements the walkthrough interface (content is in `walkthrough.html`).",
+  "webrtc": "Handles live audio chat.",
+  "who": "Lets clients peek into rooms and invite people from those rooms without joining the room",
+  "windowing": "Handles the creation of different windows, notifications, and modal windows.",
+  "youtubeVideos": "Support for the YouTube video sync feature"
+}
diff --git a/v3/js/togetherjs/togetherjs/ot.js b/v3/js/togetherjs/togetherjs/ot.js
new file mode 100644
index 000000000..570b0543f
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/ot.js
@@ -0,0 +1,779 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["util"], function (util) {
+
+  var ot = util.Module("ot");
+  var assert = util.assert;
+
+  var StringSet = util.Class({
+    /* Set that only supports string items */
+    constructor: function () {
+      this._items = {};
+      this._count = 0;
+    },
+    contains: function (k) {
+      assert(typeof k == "string");
+      return this._items.hasOwnProperty(k);
+    },
+    add: function (k) {
+      assert(typeof k == "string");
+      if (this.contains(k)) {
+        return;
+      }
+      this._items[k] = null;
+      this._count++;
+    },
+    remove: function (k) {
+      assert(typeof k == "string");
+      if (! this.contains(k)) {
+        return;
+      }
+      delete this._items[k];
+      this._count++;
+    },
+    isEmpty: function () {
+      return ! this._count;
+    }
+  });
+
+  var Queue = util.Class({
+
+    constructor: function (size) {
+      this._q = [];
+      this._size = size;
+      this._deleted = 0;
+    },
+
+    _trim: function () {
+      if (this._size) {
+        if (this._q.length > this._size) {
+          this._q.splice(0, this._q.length - this._size);
+          this._deleted += this._q.length - this._size;
+        }
+      }
+    },
+
+    push: function (item) {
+      this._q.push(item);
+      this._trim();
+    },
+
+    last: function () {
+      return this._q[this._q.length-1];
+    },
+
+    walkBack: function (callback, context) {
+      var result = true;
+      for (var i=this._q.length-1; i >= 0; i--) {
+        var item = this._q[i];
+        result = callback.call(context, item, i + this._deleted);
+        if (result === false) {
+          return result;
+        } else if (! result) {
+          result = true;
+        }
+      }
+      return result;
+    },
+
+    walkForward: function (index, callback, context) {
+      var result = true;
+      for (var i=index; i<this._q.length; i++) {
+        var item = this._q[i-this._deleted];
+        result = callback.call(context, item, i);
+        if (result === false) {
+          return result;
+        } else if (! result) {
+          result = true;
+        }
+      }
+      return result;
+    },
+
+    insert: function (index, item) {
+      this._q.splice(index-this._deleted, 0, item);
+    }
+
+  });
+
+  var Change = util.Class({
+
+    constructor: function (version, clientId, delta, known, outOfOrder) {
+      this.version = version;
+      this.clientId = clientId;
+      this.delta = delta;
+      this.known = known;
+      this.outOfOrder = !! outOfOrder;
+      assert(typeof version == "number" && typeof clientId == "string",
+             "Bad Change():", version, clientId);
+    },
+
+    toString: function () {
+      var s = "[Change " + this.version + "." + this.clientId + ": ";
+      s += this.delta + " ";
+      if (this.outOfOrder) {
+        s += "(out of order) ";
+      }
+      var cids = [];
+      for (var a in this.known) {
+        if (this.known.hasOwnProperty(a)) {
+          cids.push(a);
+        }
+      }
+      cids.sort();
+      s += "{";
+      if (! cids.length) {
+        s += "nothing known";
+      } else {
+        cids.forEach(function (a, index) {
+          if (index) {
+            s += ";";
+          }
+          s += a + ":" + this.known[a];
+        }, this);
+      }
+      return s + "}]";
+    },
+
+    clone: function () {
+      return Change(this.version, this.clientId, this.delta.clone(), util.extend(this.known), this.outOfOrder);
+    },
+
+    isBefore: function (otherChange) {
+      assert(otherChange !== this, "Tried to compare a change to itself", this);
+      return otherChange.version > this.version ||
+          (otherChange.version == this.version && otherChange.clientId > this.clientId);
+    },
+
+    knowsAboutAll: function (versions) {
+      for (var clientId in versions) {
+        if (! versions.hasOwnProperty(clientId)) {
+          continue;
+        }
+        if (! versions[clientId]) {
+          continue;
+        }
+        if ((! this.known[clientId]) || this.known[clientId] < versions[clientId]) {
+          return false;
+        }
+      }
+      return true;
+    },
+
+    knowsAboutChange: function (change) {
+      return change.clientId == this.clientId ||
+          (this.known[change.clientId] && this.known[change.clientId] >= change.version);
+    },
+
+    knowsAboutVersion: function (version, clientId) {
+      if ((! version) || clientId == this.clientId) {
+        return true;
+      }
+      return this.known[clientId] && this.known[clientId] >= version;
+    },
+
+    maybeMissingChanges: function (mostRecentVersion, clientId) {
+      if (! mostRecentVersion) {
+        // No actual changes for clientId exist
+        return false;
+      }
+      if (! this.known[clientId]) {
+        // We don't even know about clientId, so we are definitely missing something
+        return true;
+      }
+      if (this.known[clientId] >= mostRecentVersion) {
+        // We know about all versions through mostRecentVersion
+        return false;
+      }
+      if ((clientId > this.clientId && this.known[clientId] >= this.version-1) ||
+          (clientId < this.clientId && this.known[clientId] == this.version)) {
+        // We know about all versions from clientId that could exist before this
+        // version
+        return false;
+      }
+      // We may or may not be missing something
+      return true;
+    }
+  });
+
+  /* SimpleHistory synchronizes peers by relying on the server to serialize
+   * the order of all updates.  Each client maintains a queue of patches
+   * which have not yet been 'committed' (by being echoed back from the
+   * server).  The client is responsible for transposing its own queue
+   * if 'earlier' patches are heard from the server.
+   *
+   * Let's say that A's edit "1" and B's edit "2" occur and get put in
+   * their respective SimpleHistory queues.  The server happens to
+   * handle 1 first, then 2, so those are the order that all peers
+   * (both A and B) see the messages.
+   *
+   * A sees 1, and has 1 on its queue, so everything's fine. It
+   * updates the 'committed' text to match its current text and drops
+   * the patch from its queue. It then sees 2, but the basis number
+   * for 2 no longer matches the committed basis, so it throws it
+   * away.
+   *
+   * B sees 1, and has 2 on its queue. It does the OT transpose thing,
+   * updating the committed text to include 1 and the 'current' text
+   * to include 1+2. It updates its queue with the newly transposed
+   * version of 2 (call it 2prime) and updates 2prime's basis
+   * number. It them resends 2prime to the server. It then receives 2
+   * (the original) but the basis number no longer matches the
+   * committed basis, so it throws it away.
+   *
+   * Now the server sees 2prime and rebroadcasts it to both A and B.
+   *
+   * A is seeing it for the first time, and the basis number matches,
+   * so it applies it to the current and committed text.
+   *
+   * B sees that 2prime matches what's on the start of its queue,
+   * shifts it off, and updates the committed text to match the
+   * current text.
+   *
+   * Note that no one tries to keep an entire history of changes,
+   * which is the main difference with ot.History.  Everyone applies
+   * the same patches in the same order.
+   */
+  ot.SimpleHistory = util.Class({
+
+    constructor: function(clientId, initState, initBasis) {
+      this.clientId = clientId;
+      this.committed = initState;
+      this.current = initState;
+      this.basis = initBasis;
+      this.queue = [];
+      this.deltaId = 1;
+      this.selection = null;
+    },
+
+    // Use a fake change to represent the selection.
+    // (This is the only bit that hard codes ot.TextReplace as the delta
+    // representation; override this in a subclass (or don't set the
+    // selection) if you are using a different delta representation.
+    setSelection: function(selection) {
+      if (selection) {
+        this.selection = ot.TextReplace(selection[0],
+                                        selection[1] - selection[0], '@');
+      } else {
+        this.selection = null;
+      }
+    },
+
+    // Decode the fake change to reconstruct the updated selection.
+    getSelection: function() {
+      if (! this.selection) {
+        return null;
+      }
+      return [this.selection.start, this.selection.start + this.selection.del];
+    },
+
+    // Add this delta to this client's queue.
+    add: function(delta) {
+      var change = {
+        id: this.clientId + '.' + (this.deltaId++),
+        delta: delta
+      };
+      if (! this.queue.length) {
+        change.basis = this.basis;
+      }
+      this.queue.push(change);
+      this.current = delta.apply(this.current);
+      return !!change.basis;
+    },
+
+    // Apply a delta received from the server.
+    // Return true iff the current text changed as a result.
+    commit: function(change) {
+
+      // ignore it if the basis doesn't match (this patch doesn't apply)
+      // if so, this delta is out of order; we expect the original client
+      // to retransmit an updated delta.
+      if (change.basis !== this.basis) {
+        return false; // 'current' text did not change
+      }
+
+      // is this the first thing on the queue?
+      if (this.queue.length && this.queue[0].id === change.id) {
+        assert(change.basis === this.queue[0].basis);
+        // good, apply this to commit state & remove it from queue
+        this.committed = this.queue.shift().delta.apply(this.committed);
+        this.basis++;
+        if (this.queue.length) {
+          this.queue[0].basis = this.basis;
+        }
+        return false; // 'current' text did not change
+      }
+
+      // Transpose all bits on the queue to put this patch first.
+      var inserted = change.delta;
+      this.queue = this.queue.map(function(qchange) {
+        var tt = qchange.delta.transpose(inserted);
+        inserted = tt[1];
+        return {
+          id: qchange.id,
+          delta: tt[0]
+        };
+      });
+      if (this.selection) {
+        // update the selection!
+        this.selection = this.selection.transpose(inserted)[0];
+      }
+      this.committed = change.delta.apply(this.committed);
+      this.basis++;
+      if (this.queue.length) {
+        this.queue[0].basis = this.basis;
+      }
+      // Update current by replaying queued changes starting from 'committed'
+      this.current = this.committed;
+      this.queue.forEach(function(qchange) {
+        this.current = qchange.delta.apply(this.current);
+      }.bind(this));
+      return true; // The 'current' text changed.
+    },
+
+    // Return the next change to transmit to the server, or null if there
+    // isn't one.
+    getNextToSend: function() {
+      var qchange = this.queue[0];
+      if (! qchange) {
+        /* nothing to send */
+        return null;
+      }
+      if (qchange.sent) {
+        /* already sent */
+        return null;
+      }
+      assert(qchange.basis);
+      qchange.sent = true;
+      return qchange;
+    }
+  });
+
+  ot.History = util.Class({
+
+    constructor: function (clientId, initState) {
+      this._history = Queue();
+      this._history.push({
+        clientId: "init", state: initState
+      });
+      this.clientId = clientId;
+      this.known = {};
+      this.mostRecentLocalChange = null;
+    },
+
+    add: function (change) {
+      // Simplest cast, it is our change:
+      if (change.clientId == this.clientId) {
+        this._history.push(change);
+        this.mostRecentLocalChange = change.version;
+        return change.delta;
+      }
+      assert((! this.known[change.clientId]) || this.known[change.clientId] < change.version,
+            "Got a change", change, "that appears older (or same as) a known change", this.known[change.clientId]);
+      // Second simplest case, we get a change that we can add to our
+      // history without modification:
+      var last = this._history.last();
+      if ((last.clientId == "init" || last.isBefore(change)) &&
+          change.knowsAboutAll(this.known) &&
+          change.knowsAboutVersion(this.mostRecentLocalChange, this.clientId)) {
+        this._history.push(change);
+        this.known[change.clientId] = change.version;
+        return change.delta;
+      }
+      // We must do work!
+
+      this.logHistory("//");
+
+      // First we check if we need to modify this change because we
+      // know about changes that it should know about (changes that
+      // preceed it that are in our local history).
+      var clientsToCheck = StringSet();
+      for (var clientId in this.known) {
+        if (! this.known.hasOwnProperty(clientId)) {
+          continue;
+        }
+        if (change.maybeMissingChanges(this.known[clientId], clientId)) {
+          clientsToCheck.add(clientId);
+        }
+      }
+      if (change.maybeMissingChanges(this.mostRecentLocalChange, this.clientId)) {
+        clientsToCheck.add(this.clientId);
+      }
+      if (! clientsToCheck.isEmpty()) {
+        var indexToCheckFrom = null;
+        this._history.walkBack(function (c, index) {
+          indexToCheckFrom = index;
+          if (c.clientId == "init") {
+            return false;
+          }
+          if (clientsToCheck.contains(c.clientId) &&
+              ! change.maybeMissingChanges(c.version, c.clientId)) {
+            clientsToCheck.remove(c.clientId);
+            if (clientsToCheck.isEmpty()) {
+              return false;
+            }
+          }
+          return true;
+        }, this);
+        this._history.walkForward(indexToCheckFrom, function (c, index) {
+          if (c.clientId == "init") {
+            return true;
+          }
+          if (change.isBefore(c)) {
+            return false;
+          }
+          if (! change.knowsAboutChange(c)) {
+            var presentDelta = this.promoteDelta(c.delta, index, change);
+            if (! presentDelta.equals(c.delta)) {
+              //console.log("->rebase delta rewrite", presentDelta+"");
+            }
+            this.logChange("->rebase", change, function () {
+              var result = change.delta.transpose(presentDelta);
+              change.delta = result[0];
+              change.known[c.clientId] = c.version;
+            }, "with:", c);
+          }
+          return true;
+        }, this);
+      }
+
+      // Next we insert the change into its proper location
+      var indexToInsert = null;
+      this._history.walkBack(function (c, index) {
+        if (c.clientId == "init" || c.isBefore(change)) {
+          indexToInsert = index+1;
+          return false;
+        }
+        return true;
+      }, this);
+      assert(indexToInsert);
+      this._history.insert(indexToInsert, change);
+
+      // Now we fix up any forward changes
+      var fixupDelta = change.delta;
+      this._history.walkForward(indexToInsert+1, function (c, index) {
+        if (! c.knowsAboutChange(change)) {
+          var origChange = c.clone();
+          this.logChange("^^fix", c, function () {
+            var fixupResult = c.delta.transpose(fixupDelta);
+            console.log("  ^^real");
+            var result = c.delta.transpose(fixupDelta);
+            c.delta = result[0];
+            c.known[change.clientId] = change.version;
+            fixupDelta = fixupResult[1];
+          }, "clone:", change.delta+"");
+          console.log("(trans)", fixupDelta+"");
+          assert(c.knowsAboutChange(change));
+        }
+      }, this);
+
+      // Finally we return the transformed delta that represents
+      // changes that should be made to the state:
+
+      this.logHistory("!!");
+      return fixupDelta;
+    },
+
+    promoteDelta: function (delta, deltaIndex, untilChange) {
+      this._history.walkForward(deltaIndex+1, function (c, index) {
+        if (untilChange.isBefore(c)) {
+          return false;
+        }
+        // FIXME: not sure if this clientId check here is right.  Maybe
+        // if untilChange.knowsAbout(c)?
+        if (untilChange.knowsAboutChange(c)) {
+          var result = c.delta.transpose(delta);
+          delta = result[1];
+        }
+        return true;
+      });
+      return delta;
+    },
+
+    logHistory: function (prefix) {
+      prefix = prefix || "";
+      var postfix = Array.prototype.slice.call(arguments, 1);
+      console.log.apply(console, [prefix + "history", this.clientId, ":"].concat(postfix));
+      console.log(prefix + " state:", JSON.stringify(this.getStateSafe()));
+      var hstate;
+      this._history.walkForward(0, function (c, index) {
+        if (! index) {
+          assert(c.clientId == "init");
+          console.log(prefix + " init:", JSON.stringify(c.state));
+          hstate = c.state;
+        } else {
+          try {
+            hstate = c.delta.apply(hstate);
+          } catch (e) {
+            hstate = "Error: " + e;
+          }
+          console.log(prefix + "  ", index, c+"", JSON.stringify(hstate));
+        }
+      });
+    },
+
+    logChange: function (prefix, change, callback) {
+      prefix = prefix || "before";
+      var postfix = Array.prototype.slice.call(arguments, 3);
+      console.log.apply(
+        console,
+        [prefix, this.clientId, ":", change+""].concat(postfix).concat([JSON.stringify(this.getStateSafe(true))]));
+      try {
+        callback();
+      } finally {
+        console.log(prefix + " after:", change+"", JSON.stringify(this.getStateSafe()));
+      }
+    },
+
+    addDelta: function (delta) {
+      var version = this._createVersion();
+      var change = Change(version, this.clientId, delta, util.extend(this.knownVersions));
+      this.add(change);
+      return change;
+    },
+
+    _createVersion: function () {
+      var max = 1;
+      for (var id in this.knownVersions) {
+        max = Math.max(max, this.knownVersions[id]);
+      }
+      max = Math.max(max, this.mostRecentLocalChange);
+      return max+1;
+    },
+
+    fault: function (change) {
+      throw new Error('Fault');
+    },
+
+    getState: function () {
+      var state;
+      this._history.walkForward(0, function (c) {
+        if (c.clientId == "init") {
+          // Initialization, has the state
+          state = c.state;
+        } else {
+          state = c.delta.apply(state);
+        }
+      }, this);
+      return state;
+    },
+
+    getStateSafe: function () {
+      try {
+        return this.getState();
+      } catch (e) {
+        return 'Error: ' + e;
+      }
+    }
+
+  });
+
+  ot.TextReplace = util.Class({
+
+    constructor: function (start, del, text) {
+      assert(typeof start == "number" && typeof del == "number" && typeof text == "string", start, del, text);
+      assert(start >=0 && del >= 0, start, del);
+      this.start = start;
+      this.del = del;
+      this.text = text;
+    },
+
+    toString: function () {
+      if (this.empty()) {
+        return '[no-op]';
+      }
+      if (! this.del) {
+        return '[insert ' + JSON.stringify(this.text) + ' @' + this.start + ']';
+      } else if (! this.text) {
+        return '[delete ' + this.del + ' chars @' + this.start + ']';
+      } else {
+        return '[replace ' + this.del + ' chars with ' + JSON.stringify(this.text) + ' @' + this.start + ']';
+      }
+    },
+
+    equals: function (other) {
+      return other.constructor === this.constructor &&
+          other.del === this.del &&
+          other.start === this.start &&
+          other.text === this.text;
+    },
+
+    clone: function (start, del, text) {
+      if (start === undefined) {
+        start = this.start;
+      }
+      if (del === undefined) {
+        del = this.del;
+      }
+      if (text === undefined) {
+        text = this.text;
+      }
+      return ot.TextReplace(start, del, text);
+    },
+
+    empty: function () {
+      return (! this.del) && (! this.text);
+    },
+
+    apply: function (text) {
+      if (this.empty()) {
+        return text;
+      }
+      if (this.start > text.length) {
+        console.trace();
+        throw new util.AssertionError("Start after end of text (" + JSON.stringify(text) + "/" + text.length + "): " + this);
+      }
+      if (this.start + this.del > text.length) {
+        throw new util.AssertionError("Start+del after end of text (" + JSON.stringify(text) + "/" + text.length + "): " + this);
+      }
+      return text.substr(0, this.start) + this.text + text.substr(this.start+this.del);
+    },
+
+    transpose: function (delta) {
+      /* Transform this delta as though the other delta had come before it.
+         Returns a [new_version_of_this, transformed_delta], where transformed_delta
+         satisfies:
+
+         result1 = new_version_of_this.apply(delta.apply(text));
+         result2 = transformed_delta.apply(this.apply(text));
+         assert(result1 == result2);
+
+         Does not modify this object.
+      */
+      var overlap;
+      assert(delta instanceof ot.TextReplace, "Transposing with non-TextReplace:", delta);
+      if (this.empty()) {
+        //console.log("  =this is empty");
+        return [this.clone(), delta.clone()];
+      }
+      if (delta.empty()) {
+        //console.log("  =other is empty");
+        return [this.clone(), delta.clone()];
+      }
+      if (delta.before(this)) {
+        //console.log("  =this after other");
+        return [this.clone(this.start + delta.text.length - delta.del),
+                delta.clone()];
+      } else if (this.before(delta)) {
+        //console.log("  =this before other");
+        return [this.clone(), delta.clone(delta.start + this.text.length - this.del)];
+      } else if (delta.sameRange(this)) {
+        //console.log("  =same range");
+        return [this.clone(this.start+delta.text.length, 0),
+                delta.clone(undefined, 0)];
+      } else if (delta.contains(this)) {
+        //console.log("  =other contains this");
+        return [this.clone(delta.start+delta.text.length, 0, this.text),
+                delta.clone(undefined, delta.del - this.del + this.text.length, delta.text + this.text)];
+      } else if (this.contains(delta)) {
+        //console.log("  =this contains other");
+        return [this.clone(undefined, this.del - delta.del + delta.text.length, delta.text + this.text),
+                delta.clone(this.start, 0, delta.text)];
+      } else if (this.overlapsStart(delta)) {
+        //console.log("  =this overlaps start of other");
+        overlap = this.start + this.del - delta.start;
+        return [this.clone(undefined, this.del - overlap),
+                delta.clone(this.start + this.text.length, delta.del - overlap)];
+      } else {
+        //console.log("  =this overlaps end of other");
+        assert(delta.overlapsStart(this), delta+"", "does not overlap start of", this+"", delta.before(this));
+        overlap = delta.start + delta.del - this.start;
+        return [this.clone(delta.start + delta.text.length, this.del - overlap),
+                delta.clone(undefined, delta.del - overlap)];
+      }
+      throw 'Should not happen';
+    },
+
+    before: function (other) {
+      return this.start + this.del <= other.start;
+    },
+
+    contains: function (other) {
+      return other.start >= this.start && other.start + other.del < this.start + this.del;
+    },
+
+    sameRange: function (other) {
+      return other.start == this.start && other.del == this.del;
+    },
+
+    overlapsStart: function (other) {
+      return this.start < other.start && this.start + this.del > other.start;
+    },
+
+    classMethods: {
+
+      /* Make a new ot.TextReplace that converts oldValue to newValue. */
+      fromChange: function(oldValue, newValue) {
+        assert(typeof oldValue == "string");
+        assert(typeof newValue == "string");
+        var commonStart = 0;
+        while (commonStart < newValue.length &&
+               newValue.charAt(commonStart) == oldValue.charAt(commonStart)) {
+          commonStart++;
+        }
+        var commonEnd = 0;
+        while (commonEnd < (newValue.length - commonStart) &&
+               commonEnd < (oldValue.length - commonStart) &&
+               newValue.charAt(newValue.length - commonEnd - 1) ==
+               oldValue.charAt(oldValue.length - commonEnd - 1)) {
+          commonEnd++;
+        }
+        var removed = oldValue.substr(commonStart, oldValue.length - commonStart - commonEnd);
+        var inserted = newValue.substr(commonStart, newValue.length - commonStart - commonEnd);
+        if (! (removed.length || inserted)) {
+          return null;
+        }
+        return this(commonStart, removed.length, inserted);
+      },
+
+      random: function (source, generator) {
+        var text, start, len;
+        var ops = ["ins", "del", "repl"];
+        if (! source.length) {
+          ops = ["ins"];
+        }
+        switch (generator.pick(ops)) {
+        case "ins":
+          if (! generator.number(2)) {
+            text = generator.string(1);
+          } else {
+            text = generator.string(generator.number(3)+1);
+          }
+          if (! generator.number(4)) {
+            start = 0;
+          } else if (! generator.number(3)) {
+            start = source.length-1;
+          } else {
+            start = generator.number(source.length);
+          }
+          return this(start, 0, text);
+
+        case "del":
+          if (! generator.number(20)) {
+            return this(0, source.length, "");
+          }
+          start = generator.number(source.length-1);
+          if (! generator.number(2)) {
+            len = 1;
+          } else {
+            len = generator.number(5)+1;
+          }
+          len = Math.min(len, source.length - start);
+          return this(start, len, "");
+
+        case "repl":
+          start = generator.number(source.length-1);
+          len = generator.number(5);
+          len = Math.min(len, source.length - start);
+          text = generator.string(generator.number(2)+1);
+          return this(start, len, text);
+        }
+        throw 'Unreachable';
+      }
+    }
+  });
+
+  return ot;
+});
diff --git a/v3/js/togetherjs/togetherjs/peers.js b/v3/js/togetherjs/togetherjs/peers.js
new file mode 100644
index 000000000..c5802e077
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/peers.js
@@ -0,0 +1,587 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["util", "session", "storage", "require", "templates"], function (util, session, storage, require, templates) {
+  var peers = util.Module("peers");
+  var assert = util.assert;
+  var CHECK_ACTIVITY_INTERVAL = 10*1000; // Every 10 seconds see if someone has gone idle
+  var IDLE_TIME = 3*60*1000; // Idle time is 3 minutes
+  var TAB_IDLE_TIME = 2*60*1000; // When you tab away, after two minutes you'll say you are idle
+  var BYE_TIME = 10*60*1000; // After 10 minutes of inactivity the person is considered to be "gone"
+
+  var ui;
+  require(["ui"], function (uiModule) {
+    ui = uiModule;
+  });
+
+  var DEFAULT_NICKNAMES = templates("names").split(/,\s*/g);
+  var Peer = util.Class({
+
+    isSelf: false,
+
+    constructor: function (id, attrs) {
+      attrs = attrs || {};
+      assert(id);
+      assert(! Peer.peers[id]);
+      this.id = id;
+      this.identityId = attrs.identityId || null;
+      this.status = attrs.status || "live";
+      this.idle = attrs.status || "active";
+      this.name = attrs.name || null;
+      this.avatar = attrs.avatar || null;
+      this.color = attrs.color || "#00FF00";
+      this.view = ui.PeerView(this);
+      this.lastMessageDate = 0;
+      this.following = attrs.following || false;
+      Peer.peers[id] = this;
+      var joined = attrs.joined || false;
+      if (attrs.fromHelloMessage) {
+        this.updateFromHello(attrs.fromHelloMessage);
+        if (attrs.fromHelloMessage.type == "hello") {
+          joined = true;
+        }
+      }
+      peers.emit("new-peer", this);
+      if (joined) {
+        this.view.notifyJoined();
+      }
+      this.view.update();
+    },
+
+    repr: function () {
+      return "Peer(" + JSON.stringify(this.id) + ")";
+    },
+
+    serialize: function () {
+      return {
+        id: this.id,
+        status: this.status,
+        idle: this.idle,
+        url: this.url,
+        hash: this.hash,
+        title: this.title,
+        identityId: this.identityId,
+        rtcSupported: this.rtcSupported,
+        name: this.name,
+        avatar: this.avatar,
+        color: this.color,
+        following: this.following
+      };
+    },
+
+    destroy: function () {
+      this.view.destroy();
+      delete Peer.peers[this.id];
+    },
+
+    updateMessageDate: function (msg) {
+      if (this.idle == "inactive") {
+        this.update({idle: "active"});
+      }
+      if (this.status == "bye") {
+        this.unbye();
+      }
+      this.lastMessageDate = Date.now();
+    },
+
+    updateFromHello: function (msg) {
+      var urlUpdated = false;
+      var activeRTC = false;
+      var identityUpdated = false;
+      if (msg.url && msg.url != this.url) {
+        this.url = msg.url;
+        this.hash = null;
+        this.title = null;
+        urlUpdated = true;
+      }
+      if (msg.hash != this.hash) {
+        this.hash = msg.urlHash;
+        urlUpdated = true;
+      }
+      if (msg.title != this.title) {
+        this.title = msg.title;
+        urlUpdated = true;
+      }
+      if (msg.rtcSupported !== undefined) {
+        this.rtcSupported = msg.rtcSupported;
+      }
+      if (msg.identityId !== undefined) {
+        this.identityId = msg.identityId;
+      }
+      if (msg.name && msg.name != this.name) {
+        this.name = msg.name;
+        identityUpdated = true;
+      }
+      if (msg.avatar && msg.avatar != this.avatar) {
+        util.assertValidUrl(msg.avatar);
+        this.avatar = msg.avatar;
+        identityUpdated = true;
+      }
+      if (msg.color && msg.color != this.color) {
+        this.color = msg.color;
+        identityUpdated = true;
+      }
+      if (msg.isClient !== undefined) {
+        this.isCreator = ! msg.isClient;
+      }
+      if (this.status != "live") {
+        this.status = "live";
+        peers.emit("status-updated", this);
+      }
+      if (this.idle != "active") {
+        this.idle = "active";
+        peers.emit("idle-updated", this);
+      }
+      if (msg.rtcSupported) {
+        peers.emit("rtc-supported", this);
+      }
+      if (urlUpdated) {
+        peers.emit("url-updated", this);
+      }
+      if (identityUpdated) {
+        peers.emit("identity-updated", this);
+      }
+      // FIXME: I can't decide if this is the only time we need to emit
+      // this message (and not .update() or other methods)
+      if (this.following) {
+        session.emit("follow-peer", this);
+      }
+    },
+
+    update: function (attrs) {
+      // FIXME: should probably test that only a couple attributes are settable
+      // particularly status and idle
+      if (attrs.idle) {
+        this.idle = attrs.idle;
+      }
+      if (attrs.status) {
+        this.status = attrs.status;
+      }
+      this.view.update();
+    },
+
+    className: function (prefix) {
+      prefix = prefix || "";
+      return prefix + util.safeClassName(this.id);
+    },
+
+    bye: function () {
+      if (this.status != "bye") {
+        this.status = "bye";
+        peers.emit("status-updated", this);
+      }
+      this.view.update();
+    },
+
+    unbye: function () {
+      if (this.status == "bye") {
+        this.status = "live";
+        peers.emit("status-updated", this);
+      }
+      this.view.update();
+    },
+
+    nudge: function () {
+      session.send({
+        type: "url-change-nudge",
+        url: location.href,
+        to: this.id
+      });
+    },
+
+    follow: function () {
+      if (this.following) {
+        return;
+      }
+      peers.getAllPeers().forEach(function (p) {
+        if (p.following) {
+          p.unfollow();
+        }
+      });
+      this.following = true;
+      // We have to make sure we remember this, even if we change URLs:
+      storeSerialization();
+      this.view.update();
+      session.emit("follow-peer", this);
+    },
+
+    unfollow: function () {
+      this.following = false;
+      storeSerialization();
+      this.view.update();
+    }
+
+  });
+
+  // FIXME: I can't decide where this should actually go, seems weird
+  // that it is emitted and handled in the same module
+  session.on("follow-peer", function (peer) {
+    if (peer.url != session.currentUrl()) {
+      var url = peer.url;
+      if (peer.urlHash) {
+        url += peer.urlHash;
+      }
+      location.href = url;
+    }
+  });
+
+  Peer.peers = {};
+
+  Peer.deserialize = function (obj) {
+    obj.fromStorage = true;
+    var peer = Peer(obj.id, obj);
+  };
+
+  peers.Self = undefined;
+
+  session.on("start", function () {
+    if (peers.Self) {
+      return;
+    }
+    /* Same interface as Peer, represents oneself (local user): */
+    peers.Self = util.mixinEvents({
+      isSelf: true,
+      id: session.clientId,
+      identityId: session.identityId,
+      status: "live",
+      idle: "active",
+      name: null,
+      avatar: null,
+      color: null,
+      defaultName: null,
+      loaded: false,
+      isCreator: ! session.isClient,
+
+      update: function (attrs) {
+        var updatePeers = false;
+        var updateIdle = false;
+        var updateMsg = {type: "peer-update"};
+        if (typeof attrs.name == "string" && attrs.name != this.name) {
+          this.name = attrs.name;
+          updateMsg.name = this.name;
+          if (! attrs.fromLoad) {
+            storage.settings.set("name", this.name);
+            updatePeers = true;
+          }
+        }
+        if (attrs.avatar && attrs.avatar != this.avatar) {
+          util.assertValidUrl(attrs.avatar);
+          this.avatar = attrs.avatar;
+          updateMsg.avatar = this.avatar;
+          if (! attrs.fromLoad) {
+            storage.settings.set("avatar", this.avatar);
+            updatePeers = true;
+          }
+        }
+        if (attrs.color && attrs.color != this.color) {
+          this.color = attrs.color;
+          updateMsg.color = this.color;
+          if (! attrs.fromLoad) {
+            storage.settings.set("color", this.color);
+            updatePeers = true;
+          }
+        }
+        if (attrs.defaultName && attrs.defaultName != this.defaultName) {
+          this.defaultName = attrs.defaultName;
+          if (! attrs.fromLoad) {
+            storage.settings.set("defaultName", this.defaultName);
+            updatePeers = true;
+          }
+        }
+        if (attrs.status && attrs.status != this.status) {
+          this.status = attrs.status;
+          peers.emit("status-updated", this);
+        }
+        if (attrs.idle && attrs.idle != this.idle) {
+          this.idle = attrs.idle;
+          updateIdle = true;
+          peers.emit("idle-updated", this);
+        }
+        this.view.update();
+        if (updatePeers && ! attrs.fromLoad) {
+          session.emit("self-updated");
+          session.send(updateMsg);
+        }
+        if (updateIdle && ! attrs.fromLoad) {
+          session.send({
+            type: "idle-status",
+            idle: this.idle
+          });
+        }
+      },
+
+      className: function (prefix) {
+        prefix = prefix || "";
+        return prefix + "self";
+      },
+
+      _loadFromSettings: function () {
+        return util.resolveMany(
+          storage.settings.get("name"),
+          storage.settings.get("avatar"),
+          storage.settings.get("defaultName"),
+          storage.settings.get("color")).then((function (name, avatar, defaultName, color) {
+            if (! defaultName) {
+              defaultName = util.pickRandom(DEFAULT_NICKNAMES);
+
+              storage.settings.set("defaultName", defaultName);
+            }
+            if (! color) {
+              color = Math.floor(Math.random() * 0xffffff).toString(16);
+              while (color.length < 6) {
+                color = "0" + color;
+              }
+              color = "#" + color;
+              storage.settings.set("color", color);
+            }
+            if (! avatar) {
+              avatar = TogetherJS.baseUrl + "/togetherjs/images/default-avatar.png";
+            }
+            this.update({
+              name: name,
+              avatar: avatar,
+              defaultName: defaultName,
+              color: color,
+              fromLoad: true
+            });
+            peers._SelfLoaded.resolve();
+          }).bind(this)); // FIXME: ignoring error
+      },
+
+      _loadFromApp: function () {
+        // FIXME: I wonder if these should be optionally functions?
+        // We could test typeof==function to distinguish between a getter and a concrete value
+        var getUserName = TogetherJS.config.get("getUserName");
+        var getUserColor = TogetherJS.config.get("getUserColor");
+        var getUserAvatar = TogetherJS.config.get("getUserAvatar");
+        var name, color, avatar;
+        if (getUserName) {
+          if (typeof getUserName == "string") {
+            name = getUserName;
+          } else {
+            name = getUserName();
+          }
+          if (name && typeof name != "string") {
+            // FIXME: test for HTML safe?  Not that we require it, but
+            // <>'s are probably a sign something is wrong.
+            console.warn("Error in getUserName(): should return a string (got", name, ")");
+            name = null;
+          }
+        }
+        if (getUserColor) {
+          if (typeof getUserColor == "string") {
+            color = getUserColor;
+          } else {
+            color = getUserColor();
+          }
+          if (color && typeof color != "string") {
+            // FIXME: would be nice to test for color-ness here.
+            console.warn("Error in getUserColor(): should return a string (got", color, ")");
+            color = null;
+          }
+        }
+        if (getUserAvatar) {
+          if (typeof getUserAvatar == "string") {
+            avatar = getUserAvatar;
+          } else {
+            avatar = getUserAvatar();
+          }
+          if (avatar && typeof avatar != "string") {
+            console.warn("Error in getUserAvatar(): should return a string (got", avatar, ")");
+            avatar = null;
+          }
+        }
+        if (name || color || avatar) {
+          this.update({
+            name: name,
+            color: color,
+            avatar: avatar
+          });
+        }
+      }
+    });
+
+    peers.Self.view = ui.PeerView(peers.Self);
+    storage.tab.get("peerCache").then(deserialize);
+    peers.Self._loadFromSettings().then(function() {
+      peers.Self._loadFromApp();
+      peers.Self.view.update();
+      session.emit("self-updated");
+    });
+  });
+
+  session.on("refresh-user-data", function () {
+    if (peers.Self) {
+      peers.Self._loadFromApp();
+    }
+  });
+
+  TogetherJS.config.track(
+    "getUserName",
+    TogetherJS.config.track(
+      "getUserColor",
+      TogetherJS.config.track(
+        "getUserAvatar",
+        function () {
+          if (peers.Self) {
+            peers.Self._loadFromApp();
+          }
+        }
+      )
+    )
+  );
+
+  peers._SelfLoaded = util.Deferred();
+
+  function serialize() {
+    var peers = [];
+    util.forEachAttr(Peer.peers, function (peer) {
+      peers.push(peer.serialize());
+    });
+    return {
+      peers: peers
+    };
+  }
+
+  function deserialize(obj) {
+    if (! obj) {
+      return;
+    }
+    obj.peers.forEach(function (peer) {
+      Peer.deserialize(peer);
+    });
+  }
+
+  peers.getPeer = function getPeer(id, message) {
+    assert(id);
+    var peer = Peer.peers[id];
+    if (id === session.clientId) {
+      return peers.Self;
+    }
+    if (message && ! peer) {
+      peer = Peer(id, {fromHelloMessage: message});
+      return peer;
+    }
+    assert(peer, "No peer with id:", id);
+    if (message &&
+        (message.type == "hello" || message.type == "hello-back" ||
+         message.type == "peer-update")) {
+      peer.updateFromHello(message);
+      peer.view.update();
+    }
+    return Peer.peers[id];
+  };
+
+  peers.getAllPeers = function (liveOnly) {
+    var result = [];
+    util.forEachAttr(Peer.peers, function (peer) {
+      if (liveOnly && peer.status != "live") {
+        return;
+      }
+      result.push(peer);
+    });
+    return result;
+  };
+
+  function checkActivity() {
+    var ps = peers.getAllPeers();
+    var now = Date.now();
+    ps.forEach(function (p) {
+      if (p.idle == "active" && now - p.lastMessageDate > IDLE_TIME) {
+        p.update({idle: "inactive"});
+      }
+      if (p.status != "bye" && now - p.lastMessageDate > BYE_TIME) {
+        p.bye();
+      }
+    });
+  }
+
+  session.hub.on("bye", function (msg) {
+    var peer = peers.getPeer(msg.clientId);
+    peer.bye();
+  });
+
+  var checkActivityTask = null;
+
+  session.on("start", function () {
+    if (checkActivityTask) {
+      console.warn("Old peers checkActivityTask left over?");
+      clearTimeout(checkActivityTask);
+    }
+    checkActivityTask = setInterval(checkActivity, CHECK_ACTIVITY_INTERVAL);
+  });
+
+  session.on("close", function () {
+    util.forEachAttr(Peer.peers, function (peer) {
+      peer.destroy();
+    });
+    storage.tab.set("peerCache", undefined);
+    clearTimeout(checkActivityTask);
+    checkActivityTask = null;
+  });
+
+  var tabIdleTimeout = null;
+
+  session.on("visibility-change", function (hidden) {
+    if (hidden) {
+      if (tabIdleTimeout) {
+        clearTimeout(tabIdleTimeout);
+      }
+      tabIdleTimeout = setTimeout(function () {
+        peers.Self.update({idle: "inactive"});
+      }, TAB_IDLE_TIME);
+    } else {
+      if (tabIdleTimeout) {
+        clearTimeout(tabIdleTimeout);
+      }
+      if (peers.Self.idle == "inactive") {
+        peers.Self.update({idle: "active"});
+      }
+    }
+  });
+
+  session.hub.on("idle-status", function (msg) {
+    msg.peer.update({idle: msg.idle});
+  });
+
+  // Pings are a straight alive check, and contain no more information:
+  session.hub.on("ping", function () {
+    session.send({type: "ping-back"});
+  });
+
+  window.addEventListener("pagehide", function () {
+    // FIXME: not certain if this should be tab local or not:
+    storeSerialization();
+  }, false);
+
+  function storeSerialization() {
+    storage.tab.set("peerCache", serialize());
+  }
+
+  util.mixinEvents(peers);
+
+  util.testExpose({
+    setIdleTime: function (time) {
+      IDLE_TIME = time;
+      CHECK_ACTIVITY_INTERVAL = time / 2;
+      if (TogetherJS.running) {
+        clearTimeout(checkActivityTask);
+        checkActivityTask = setInterval(checkActivity, CHECK_ACTIVITY_INTERVAL);
+      }
+    }
+  });
+
+  util.testExpose({
+    setByeTime: function (time) {
+      BYE_TIME = time;
+      CHECK_ACTIVITY_INTERVAL = Math.min(CHECK_ACTIVITY_INTERVAL, time / 2);
+      if (TogetherJS.running) {
+        clearTimeout(checkActivityTask);
+        checkActivityTask = setInterval(checkActivity, CHECK_ACTIVITY_INTERVAL);
+      }
+    }
+  });
+
+  return peers;
+});
diff --git a/v3/js/togetherjs/togetherjs/playback.js b/v3/js/togetherjs/togetherjs/playback.js
new file mode 100644
index 000000000..757672b70
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/playback.js
@@ -0,0 +1,195 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery", "util", "session", "storage", "require"], function ($, util, session, storage, require) {
+  var playback = util.Module("playback");
+  var assert = util.assert;
+
+  var ALWAYS_REPLAY = {
+    "cursor-update": true,
+    "scroll-update": true
+  };
+
+  playback.getLogs = function (url) {
+    if (url.search(/^local:/) === 0) {
+      return $.Deferred(function (def) {
+        storage.get("recording." + url.substr("local:".length)).then(function (logs) {
+          if (! logs) {
+            def.resolve(null);
+            return;
+          }
+          logs = parseLogs(logs);
+          def.resolve(logs);
+        }, function (error) {
+          def.reject(error);
+        });
+      });
+    }
+    return $.Deferred(function (def) {
+      $.ajax({
+        url: url,
+        dataType: "text"
+      }).then(
+        function (logs) {
+          logs = parseLogs(logs);
+          def.resolve(logs);
+        },
+        function (error) {
+          def.reject(error);
+        });
+    });
+  };
+
+  function parseLogs(logs) {
+    logs = logs.replace(/\r\n/g, '\n');
+    logs = logs.split(/\n/g);
+    var result = [];
+    for (var i=0; i<logs.length; i++) {
+      var line = logs[i];
+      line = line.replace(/^\s+/, "").replace(/\s+$/, "");
+      if (line.search(/\/\*/) === 0) {
+        var last = line.search(/\*\//);
+        if (last == -1) {
+          console.warn("bad line:", line);
+          continue;
+        }
+        line = line.substr(last+2);
+      }
+      line = line.replace(/^\s+/, "");
+      if (! line) {
+        continue;
+      }
+      line = JSON.parse(line);
+      result.push(line);
+    }
+    return Logs(result);
+  }
+
+  var Logs = util.Class({
+    constructor: function (logs, fromStorage) {
+      this.logs = logs;
+      this.fromStorage = fromStorage;
+      this.pos = 0;
+    },
+
+    play: function () {
+      this.start = Date.now();
+      if (this.pos >= this.logs.length) {
+        this.unload();
+        return;
+      }
+      if (this.pos !== 0) {
+        // First we need to play the hello
+        var toReplay = [];
+        var foundHello = false;
+        for (var i=this.pos-1; i>=0; i--) {
+          var item = this.logs[i];
+          if (ALWAYS_REPLAY[item.type]) {
+            toReplay.push(item);
+          }
+          if (item.type == "hello" || item.type == "hello-back") {
+            this.playItem(item);
+            foundHello = true;
+            break;
+          }
+        }
+        if (! foundHello) {
+          console.warn("No hello message found before position", this.pos);
+        }
+        toReplay.reverse();
+        for (i=0; i<toReplay.length; i++) {
+          this.playItem(toReplay[i]);
+        }
+      }
+      this.playOne();
+    },
+
+    cancel: function () {
+      if (this.playTimer) {
+        clearTimeout(this.playTimer);
+        this.playTimer = null;
+      }
+      this.start = null;
+      this.pos = 0;
+      this.unload();
+    },
+
+    pause: function () {
+      if (this.playTimer) {
+        clearTimeout(this.playTimer);
+        this.playTimer = null;
+      }
+    },
+
+    playOne: function () {
+      this.playTimer = null;
+      if (this.pos >= this.logs.length) {
+        this.unload();
+        return;
+      }
+      var item = this.logs[this.pos];
+      this.playItem(item);
+      this.pos++;
+      if (this.pos >= this.logs.length) {
+        this.unload();
+        return;
+      }
+      var next = this.logs[this.pos];
+      var pause = next.date - item.date;
+      this.playTimer = setTimeout(this.playOne.bind(this), pause);
+      if (this.fromStorage) {
+        this.savePos();
+      }
+    },
+
+    playItem: function (item) {
+      if (item.type == "hello") {
+        // We may need to pause here
+        if (item.url != (location.href+"").replace(/\#.*/, "")) {
+          this.pause();
+        }
+      }
+      try {
+        session._getChannel().onmessage(item);
+      } catch (e) {
+        console.warn("Could not play back message:", item, "error:", e);
+      }
+    },
+
+    save: function () {
+      this.fromStorage = true;
+      storage.set("playback.logs", this.logs);
+      this.savePos();
+    },
+
+    savePos: function () {
+      storage.set("playback.pos", this.pos);
+    },
+
+    unload: function () {
+      if (this.fromStorage) {
+        storage.set("playback.logs", undefined);
+        storage.set("playback.pos", undefined);
+      }
+      // FIXME: should do a bye message here
+    }
+
+  });
+
+  playback.getRunningLogs = function () {
+    return storage.get("playback.logs").then(function (value) {
+      if (! value) {
+        return null;
+      }
+      var logs = Logs(value, true);
+      return storage.get("playback.pos").then(function (pos) {
+        pos = pos || 0;
+        logs.pos = pos;
+        return logs;
+      });
+    });
+  };
+
+  return playback;
+});
diff --git a/v3/js/togetherjs/togetherjs/randomutil.js b/v3/js/togetherjs/togetherjs/randomutil.js
new file mode 100644
index 000000000..47490df15
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/randomutil.js
@@ -0,0 +1,63 @@
+define(["util", "whrandom"], function (util, RandomStream) {
+
+  var Randomizer = util.Class({
+    constructor: function (seed) {
+      this.stream = RandomStream(seed);
+    },
+    number: function (max) {
+      return Math.floor(this.stream() * max);
+    },
+    pick: function (seq) {
+      return seq[this.number(seq.length)];
+    },
+    pickDist: function (items) {
+      var total = 0;
+      for (var a in items) {
+        if (! items.hasOwnProperty(a)) {
+          continue;
+        }
+        if (typeof items[a] != "number") {
+          throw "Bad property: " + a + " not a number";
+        }
+        total += items[a];
+      }
+      var num = this.number(total);
+      var last;
+      for (a in items) {
+        if (! items.hasOwnProperty(a)) {
+          continue;
+        }
+        last = a;
+        if (num < items[a]) {
+          return a;
+        }
+        num -= items[a];
+      }
+      // FIXME: not sure if this should ever h
+      return last;
+    },
+    string: function (len, chars) {
+      var s = "";
+      for (var i=0; i<len; i++) {
+        s += this.character(chars);
+      }
+      return s;
+    },
+    character: function (chars) {
+      chars = chars || this.defaultChars;
+      return chars.charAt(this.number(chars.length));
+    }
+  });
+
+  Randomizer.prototype.lower = "abcdefghijklmnopqrstuvwxyz";
+  Randomizer.prototype.upper = Randomizer.prototype.lower.toUpperCase();
+  Randomizer.prototype.numberCharacters = "0123456789";
+  Randomizer.prototype.whitespace = " \t\n";
+  Randomizer.prototype.punctuation = "~`!@#$%^&*()_-+={}[]|\\;:'\"<>,./?";
+  Randomizer.prototype.defaultChars =
+      Randomizer.prototype.lower + Randomizer.prototype.upper +
+      Randomizer.prototype.numberCharacters + Randomizer.prototype.whitespace +
+      Randomizer.prototype.punctuation;
+
+  return Randomizer;
+});
diff --git a/v3/js/togetherjs/togetherjs/recorder.css b/v3/js/togetherjs/togetherjs/recorder.css
new file mode 100644
index 000000000..00091eca6
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/recorder.css
@@ -0,0 +1,17 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+body {
+  font-family: sans-serif;
+}
+#record {
+  width: 100%;
+  height: 80%;
+}
+#connected {
+  font-weight: bold;
+  color: #090;
+}
+#not-connected {
+  color: #900;
+}
diff --git a/v3/js/togetherjs/togetherjs/recorder.html b/v3/js/togetherjs/togetherjs/recorder.html
new file mode 100644
index 000000000..83af70c70
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/recorder.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="UTF-8">
+    <title>TogetherJS recorder</title>
+    <script>
+      TogetherJSConfig_noAutoStart = true;
+    </script>
+    <script src="../togetherjs.js"></script>
+    <script>
+      var config = TogetherJS._extend(TogetherJS.requireConfig);
+      config.deps = ["recorder"];
+      config.callback = function () {
+        console.log("got back");
+        require({context: "togetherjs"})(["recorder"], function (recorder) {
+          recorder.start({
+            baseUrl: TogetherJS.baseUrl,
+            defaultHubBase: TogetherJS.config.get("hubBase")
+          });
+        });
+      };
+      require = config;
+      console.log("required");
+    </script>
+    <script src="./libs/require.js"></script>
+    <link rel="stylesheet" href="recorder.css">
+  </head>
+  <body>
+
+<div id="connection-status">
+  <span id="not-connected" data-toggles="#connection-status span">Not Connected</span>
+  <span id="connected" data-toggles="#connection-status span" style="display: none">Connected</span>
+  <span id="no-session-id" data-toggles="#connection-status span" style="display: none">There's no <code>#&amp;togetherjs=SESSION_ID</code> in the URL.</span>
+  <button id="restart">Restart recording</button>
+  <button id="select">Select record</button>
+</div>
+
+<div>
+  <textarea id="record">/* TogetherJS session starts */
+
+</textarea>
+</div>
+
+
+  </body>
+</html>
diff --git a/v3/js/togetherjs/togetherjs/recorder.js b/v3/js/togetherjs/togetherjs/recorder.js
new file mode 100644
index 000000000..5e32cda60
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/recorder.js
@@ -0,0 +1,110 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery", "util", "channels"], function ($, util, channels) {
+  var recorder = util.Module("recorder");
+  var assert = util.assert;
+  var channel = null;
+  var baseUrl = null;
+  var clientId = "recorder";
+
+  function display(el) {
+    el = $(el);
+    var toggles = el.attr("data-toggles");
+    if (toggles) {
+      $(toggles).hide();
+    }
+    el.show();
+  }
+
+  recorder.start = function (options) {
+    $(function () {
+      $("#record").css({height: $(window).height() - 50});
+      $("#restart").click(function () {
+        location.reload();
+      });
+      $("#select").click(function () {
+        $("#record").select();
+      });
+      recorder.activate(options);
+    });
+  };
+
+  recorder.activate = function (options) {
+    var match;
+    baseUrl = options.baseUrl;
+    recorder.shareId = TogetherJS.startup._joinShareId;
+    if (! recorder.shareId) {
+      match = /\&togetherjs=([^&]+)/.exec(location.hash);
+      if (! match) {
+        display("#no-session-id");
+        return;
+      }
+      recorder.shareId = match[1];
+    }
+    var hubBase = options.defaultHubBase;
+    match = /\&hubBase=([^&]+)/.exec(location.hash);
+    if (match) {
+      hubBase = match[1];
+    }
+    hubBase = hubBase.replace(/\/*$/, "");
+    var url = hubBase + "/hub/" + recorder.shareId;
+    channel = channels.WebSocketChannel(url);
+    channel.onmessage = function (msg) {
+      if (msg.type == "hello-back") {
+        display("#connected");
+      }
+      if (msg.type == "hello") {
+        sendHello(true);
+      }
+      if (msg.type == "get-logs") {
+        sendLogs(msg);
+        return;
+      }
+      recorder.logMessage(msg);
+    };
+    sendHello(false);
+  };
+
+  function sendHello(helloBack) {
+    var msg = {
+      type: helloBack ? "hello-back" : "hello",
+      name: "Recorder 'bot",
+      // FIXME: replace with robot:
+      avatar: TogetherJS.baseUrl + "/togetherjs/images/robot-avatar.png",
+      color: "#888888",
+      rtcSupported: false,
+      clientId: clientId,
+      url: "about:blank"
+    };
+    channel.send(msg);
+  }
+
+  function sendLogs(req) {
+    var msg = {
+      type: "logs",
+      clientId: clientId,
+      logs: $("#record").val(),
+      request: req
+    };
+    channel.send(msg);
+  }
+
+  recorder.logMessage = function (msg) {
+    msg.date = Date.now();
+    msg = JSON.stringify(msg);
+    var $record = $("#record");
+    $record.val($record.val() + msg + "\n\n");
+  };
+
+  $(window).unload(function () {
+    channel.send({
+      type: "bye",
+      clientId: clientId
+    });
+  });
+
+  return recorder;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/session.js b/v3/js/togetherjs/togetherjs/session.js
new file mode 100644
index 000000000..62e6006a0
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/session.js
@@ -0,0 +1,483 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["require", "util", "channels", "jquery", "storage"], function (require, util, channels, $, storage) {
+
+  var DEBUG = true;
+
+  // This is the amount of time in which a hello-back must be received after a hello
+  // for us to respect a URL change:
+  var HELLO_BACK_CUTOFF = 1500;
+
+  var session = util.mixinEvents(util.Module("session"));
+  var assert = util.assert;
+
+  // We will load this module later (there's a circular import):
+  var peers;
+
+  // This is the hub we connect to:
+  session.shareId = null;
+  // This is the ID that identifies this client:
+  session.clientId = null;
+  session.router = channels.Router();
+  // Indicates if TogetherJS has just started (not continuing from a saved session):
+  session.firstRun = false;
+
+  // This is the key we use for localStorage:
+  var localStoragePrefix = "togetherjs.";
+  // This is the channel to the hub:
+  var channel = null;
+
+  // Setting, essentially global:
+  session.AVATAR_SIZE = 90;
+
+  var MAX_SESSION_AGE = 30*24*60*60*1000; // 30 days
+
+  /****************************************
+   * URLs
+   */
+  var includeHashInUrl = TogetherJS.config.get("includeHashInUrl");
+  TogetherJS.config.close("includeHashInUrl");
+  var currentUrl = (location.href + "").replace(/\#.*$/, "");
+  if (includeHashInUrl) {
+    currentUrl = location.href;
+  }
+
+  session.hubUrl = function (id) {
+    id = id || session.shareId;
+    assert(id, "URL cannot be resolved before TogetherJS.shareId has been initialized");
+    TogetherJS.config.close("hubBase");
+    var hubBase = TogetherJS.config.get("hubBase");
+    return hubBase.replace(/\/*$/, "") + "/hub/" + id;
+  };
+
+  session.shareUrl = function () {
+    assert(session.shareId, "Attempted to access shareUrl() before shareId is set");
+    var hash = location.hash;
+    var m = /\?[^#]*/.exec(location.href);
+    var query = "";
+    if (m) {
+      query = m[0];
+    }
+    hash = hash.replace(/&?togetherjs-[a-zA-Z0-9]+/, "");
+    hash = hash || "#";
+    return location.protocol + "//" + location.host + location.pathname + query +
+           hash + "&togetherjs=" + session.shareId;
+  };
+
+  session.recordUrl = function () {
+    assert(session.shareId);
+    var url = TogetherJS.baseUrl.replace(/\/*$/, "") + "/togetherjs/recorder.html";
+    url += "#&togetherjs=" + session.shareId + "&hubBase=" + TogetherJS.config.get("hubBase");
+    return url;
+  };
+
+  /* location.href without the hash */
+  session.currentUrl = function () {
+    if (includeHashInUrl) {
+      return location.href;
+    } else {
+      return location.href.replace(/#.*/, "");
+    }
+  };
+
+  /****************************************
+   * Message handling/dispatching
+   */
+
+  session.hub = util.mixinEvents({});
+
+  var IGNORE_MESSAGES = TogetherJS.config.get("ignoreMessages");
+  if (IGNORE_MESSAGES === true) {
+    DEBUG = false;
+    IGNORE_MESSAGES = [];
+  }
+  // These are messages sent by clients who aren't "part" of the TogetherJS session:
+  var MESSAGES_WITHOUT_CLIENTID = ["who", "invite", "init-connection"];
+
+  // We ignore incoming messages from the channel until this is true:
+  var readyForMessages = false;
+
+  function openChannel() {
+    assert(! channel, "Attempt to re-open channel");
+    console.info("Connecting to", session.hubUrl(), location.href);
+    var c = channels.WebSocketChannel(session.hubUrl());
+    c.onmessage = function (msg) {
+      if (! readyForMessages) {
+        if (DEBUG) {
+          console.info("In (but ignored for being early):", msg);
+        }
+        return;
+      }
+      if (DEBUG && IGNORE_MESSAGES.indexOf(msg.type) == -1) {
+        console.info("In:", msg);
+      }
+      if (! peers) {
+        // We're getting messages before everything is fully initialized
+        console.warn("Message received before all modules loaded (ignoring):", msg);
+        return;
+      }
+      if ((! msg.clientId) && MESSAGES_WITHOUT_CLIENTID.indexOf(msg.type) == -1) {
+        console.warn("Got message without clientId, where clientId is required", msg);
+        return;
+      }
+      if (msg.clientId) {
+        msg.peer = peers.getPeer(msg.clientId, msg);
+      }
+      if (msg.type == "hello" || msg.type == "hello-back" || msg.type == "peer-update") {
+        // We do this here to make sure this is run before any other
+        // hello handlers:
+        msg.peer.updateFromHello(msg);
+      }
+      if (msg.peer) {
+        msg.sameUrl = msg.peer.url == currentUrl;
+        if (!msg.peer.isSelf) {
+          msg.peer.updateMessageDate(msg);
+        }
+      }
+      session.hub.emit(msg.type, msg);
+      TogetherJS._onmessage(msg);
+    };
+    channel = c;
+    session.router.bindChannel(channel);
+  }
+
+  session.send = function (msg) {
+    if (DEBUG && IGNORE_MESSAGES.indexOf(msg.type) == -1) {
+      console.info("Send:", msg);
+    }
+    msg.clientId = session.clientId;
+    channel.send(msg);
+  };
+
+  session.appSend = function (msg) {
+    var type = msg.type;
+    if (type.search(/^togetherjs\./) === 0) {
+      type = type.substr("togetherjs.".length);
+    } else if (type.search(/^app\./) === -1) {
+      type = "app." + type;
+    }
+    msg.type = type;
+    session.send(msg);
+  };
+
+  /****************************************
+   * Standard message responses
+   */
+
+  /* Always say hello back, and keep track of peers: */
+  session.hub.on("hello hello-back", function (msg) {
+    if (msg.type == "hello") {
+      sendHello(true);
+    }
+    if (session.isClient && (! msg.isClient) &&
+        session.firstRun && session.timeHelloSent &&
+        Date.now() - session.timeHelloSent < HELLO_BACK_CUTOFF) {
+      processFirstHello(msg);
+    }
+  });
+
+  session.hub.on("who", function (msg) {
+    sendHello(true);
+  });
+
+  function processFirstHello(msg) {
+    if (! msg.sameUrl) {
+      var url = msg.url;
+      if (msg.urlHash) {
+        url += msg.urlHash;
+      }
+      require("ui").showUrlChangeMessage(msg.peer, url);
+      location.href = url;
+    }
+  }
+
+  session.timeHelloSent = null;
+
+  function sendHello(helloBack) {
+    var msg = session.makeHelloMessage(helloBack);
+    if (! helloBack) {
+      session.timeHelloSent = Date.now();
+      peers.Self.url = msg.url;
+    }
+    session.send(msg);
+  }
+
+  session.makeHelloMessage = function (helloBack) {
+    var msg = {
+      name: peers.Self.name || peers.Self.defaultName,
+      avatar: peers.Self.avatar,
+      color: peers.Self.color,
+      url: session.currentUrl(),
+      urlHash: location.hash,
+      // FIXME: titles update, we should track those changes:
+      title: document.title,
+      rtcSupported: session.RTCSupported,
+      isClient: session.isClient
+    };
+    if (helloBack) {
+      msg.type = "hello-back";
+    } else {
+      msg.type = "hello";
+      msg.clientVersion = TogetherJS.version;
+    }
+    if (! TogetherJS.startup.continued) {
+      msg.starting = true;
+    }
+    // This is a chance for other modules to effect the hello message:
+    session.emit("prepare-hello", msg);
+    return msg;
+  };
+  /****************************************
+   * Lifecycle (start and end)
+   */
+
+  // These are Javascript files that implement features, and so must
+  // be injected at runtime because they aren't pulled in naturally
+  // via define().
+  // ui must be the first item:
+  var features = ["peers", "ui", "chat", "webrtc", "cursor", "startup", "videos", "forms", "visibilityApi", "youtubeVideos"];
+
+  function getRoomName(prefix, maxSize) {
+    var findRoom = TogetherJS.config.get("hubBase").replace(/\/*$/, "") + "/findroom";
+    return $.ajax({
+      url: findRoom,
+      dataType: "json",
+      data: {prefix: prefix, max: maxSize}
+    }).then(function (resp) {
+      return resp.name;
+    });
+  }
+
+  function initIdentityId() {
+    return util.Deferred(function (def) {
+      if (session.identityId) {
+        def.resolve();
+        return;
+      }
+      storage.get("identityId").then(function (identityId) {
+        if (! identityId) {
+          identityId = util.generateId();
+          storage.set("identityId", identityId);
+        }
+        session.identityId = identityId;
+        // We don't actually have to wait for the set to succede, so
+        // long as session.identityId is set
+        def.resolve();
+      });
+    });
+  }
+
+  initIdentityId.done = initIdentityId();
+
+  function initShareId() {
+    return util.Deferred(function (def) {
+      var hash = location.hash;
+      var shareId = session.shareId;
+      var isClient = true;
+      var set = true;
+      var sessionId;
+      session.firstRun = ! TogetherJS.startup.continued;
+      if (! shareId) {
+        if (TogetherJS.startup._joinShareId) {
+          // Like, below, this *also* means we got the shareId from the hash
+          // (in togetherjs.js):
+          shareId = TogetherJS.startup._joinShareId;
+        }
+      }
+      if (! shareId) {
+        // FIXME: I'm not sure if this will ever happen, because togetherjs.js should
+        // handle it
+        var m = /&?togetherjs=([^&]*)/.exec(hash);
+        if (m) {
+          isClient = ! m[1];
+          shareId = m[2];
+          var newHash = hash.substr(0, m.index) + hash.substr(m.index + m[0].length);
+          location.hash = newHash;
+        }
+      }
+      return storage.tab.get("status").then(function (saved) {
+        var findRoom = TogetherJS.config.get("findRoom");
+        TogetherJS.config.close("findRoom");
+        if (findRoom && saved && findRoom != saved.shareId) {
+          console.info("Ignoring findRoom in lieu of continued session");
+        } else if (findRoom && TogetherJS.startup._joinShareId) {
+          console.info("Ignoring findRoom in lieu of explicit invite to session");
+        }
+        if (findRoom && typeof findRoom == "string" && (! saved) && (! TogetherJS.startup._joinShareId)) {
+          isClient = true;
+          shareId = findRoom;
+          sessionId = util.generateId();
+        } else if (findRoom && (! saved) && (! TogetherJS.startup._joinShareId)) {
+          assert(findRoom.prefix && typeof findRoom.prefix == "string", "Bad findRoom.prefix", findRoom);
+          assert(findRoom.max && typeof findRoom.max == "number" && findRoom.max > 0,
+                 "Bad findRoom.max", findRoom);
+          sessionId = util.generateId();
+          if (findRoom.prefix.search(/[^a-zA-Z0-9]/) != -1) {
+            console.warn("Bad value for findRoom.prefix:", JSON.stringify(findRoom.prefix));
+          }
+          getRoomName(findRoom.prefix, findRoom.max).then(function (shareId) {
+            // FIXME: duplicates code below:
+            session.clientId = session.identityId + "." + sessionId;
+            storage.tab.set("status", {reason: "joined", shareId: shareId, running: true, date: Date.now(), sessionId: sessionId});
+            session.isClient = true;
+            session.shareId = shareId;
+            session.emit("shareId");
+            def.resolve(session.shareId);
+          });
+          return;
+        } else if (TogetherJS.startup._launch) {
+          if (saved) {
+            isClient = saved.reason == "joined";
+            if (! shareId) {
+              shareId = saved.shareId;
+            }
+            sessionId = saved.sessionId;
+          } else {
+            isClient = TogetherJS.startup.reason == "joined";
+            assert(! sessionId);
+            sessionId = util.generateId();
+          }
+          if (! shareId) {
+            shareId = util.generateId();
+          }
+        } else if (saved) {
+          isClient = saved.reason == "joined";
+          TogetherJS.startup.reason = saved.reason;
+          TogetherJS.startup.continued = true;
+          shareId = saved.shareId;
+          sessionId = saved.sessionId;
+          // The only case when we don't need to set the storage status again is when
+          // we're already set to be running
+          set = ! saved.running;
+        } else {
+          throw new util.AssertionError("No saved status, and no startup._launch request; why did TogetherJS start?");
+        }
+        assert(session.identityId);
+        session.clientId = session.identityId + "." + sessionId;
+        if (set) {
+          storage.tab.set("status", {reason: TogetherJS.startup.reason, shareId: shareId, running: true, date: Date.now(), sessionId: sessionId});
+        }
+        session.isClient = isClient;
+        session.shareId = shareId;
+        session.emit("shareId");
+        def.resolve(session.shareId);
+      });
+    });
+  }
+
+  function initStartTarget() {
+    var id;
+    if (TogetherJS.startup.button) {
+      id = TogetherJS.startup.button.id;
+      if (id) {
+        storage.set("startTarget", id);
+      }
+      return;
+    }
+    storage.get("startTarget").then(function (id) {
+      var el = document.getElementById(id);
+      if (el) {
+        TogetherJS.startup.button = el;
+      }
+    });
+  }
+  session.start = function () {
+    initStartTarget();
+    initIdentityId().then(function () {
+      initShareId().then(function () {
+        readyForMessages = false;
+        openChannel();
+        require(["ui"], function (ui) {
+          TogetherJS.running = true;
+          ui.prepareUI();
+          require(features, function () {
+            $(function () {
+              peers = require("peers");
+              var startup = require("startup");
+              session.emit("start");
+              session.once("ui-ready", function () {
+                readyForMessages = true;
+                startup.start();
+              });
+              ui.activateUI();
+              TogetherJS.config.close("enableAnalytics");
+              if (TogetherJS.config.get("enableAnalytics")) {
+                require(["analytics"], function (analytics) {
+                  analytics.activate();
+                });
+              }
+              peers._SelfLoaded.then(function () {
+                sendHello(false);
+              });
+              TogetherJS.emit("ready");
+            });
+          });
+        });
+      });
+    });
+  };
+
+  session.close = function (reason) {
+    TogetherJS.running = false;
+    var msg = {type: "bye"};
+    if (reason) {
+      msg.reason = reason;
+    }
+    session.send(msg);
+    session.emit("close");
+    var name = window.name;
+    storage.tab.get("status").then(function (saved) {
+      if (! saved) {
+        console.warn("No session information saved in", "status." + name);
+      } else {
+        saved.running = false;
+        saved.date = Date.now();
+        storage.tab.set("status", saved);
+      }
+      channel.close();
+      channel = null;
+      session.shareId = null;
+      session.emit("shareId");
+      TogetherJS.emit("close");
+      TogetherJS._teardown();
+    });
+  };
+
+  session.on("start", function () {
+    $(window).on("resize", resizeEvent);
+    if (includeHashInUrl) {
+      $(window).on("hashchange", hashchangeEvent);
+    }
+  });
+
+  session.on("close", function () {
+    $(window).off("resize", resizeEvent);
+    if (includeHashInUrl) {
+      $(window).off("hashchange", hashchangeEvent);
+    }
+  });
+
+  function hashchangeEvent() {
+    // needed because when message arives from peer this variable will be checked to
+    // decide weather to show actions or not
+    sendHello(false);
+  }
+
+  function resizeEvent() {
+    session.emit("resize");
+  }
+
+  if (TogetherJS.startup._launch) {
+    setTimeout(session.start);
+  }
+
+  util.testExpose({
+    getChannel: function () {
+      return channel;
+    }
+  });
+
+  return session;
+});
diff --git a/v3/js/togetherjs/togetherjs/startup.js b/v3/js/togetherjs/togetherjs/startup.js
new file mode 100644
index 000000000..d3f4bbf1f
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/startup.js
@@ -0,0 +1,157 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This module handles all the different UI that happens (sometimes in order) when
+   TogetherJS is started:
+
+   - Introduce the session when you've been invited
+   - Show any browser compatibility indicators
+   - Show the walkthrough the first time
+   - Show the share link window
+
+   When everything is done it fires session.emit("startup-ready")
+
+*/
+define(["util", "require", "jquery", "windowing", "storage"], function (util, require, $, windowing, storage) {
+  var assert = util.assert;
+  var startup = util.Module("startup");
+  // Avoid circular import:
+  var session = null;
+
+  var STEPS = [
+    "browserBroken",
+    "browserUnsupported",
+    "sessionIntro",
+    "walkthrough",
+    // Look in the share() below if you add anything after here:
+    "share"
+    ];
+
+  var currentStep = null;
+
+  startup.start = function () {
+    if (! session) {
+      require(["session"], function (sessionModule) {
+        session = sessionModule;
+        startup.start();
+      });
+      return;
+    }
+    var index = -1;
+    if (currentStep) {
+      index = STEPS.indexOf(currentStep);
+    }
+    index++;
+    if (index >= STEPS.length) {
+      session.emit("startup-ready");
+      return;
+    }
+    currentStep = STEPS[index];
+    handlers[currentStep](startup.start);
+  };
+
+  var handlers = {
+
+    browserBroken: function (next) {
+      if (window.WebSocket) {
+        next();
+        return;
+      }
+      windowing.show("#togetherjs-browser-broken", {
+        onClose: function () {
+          session.close();
+        }
+      });
+      if ($.browser.msie) {
+        $("#togetherjs-browser-broken-is-ie").show();
+      }
+    },
+
+    browserUnsupported: function (next) {
+      if (! $.browser.msie) {
+        next();
+        return;
+      }
+      var cancel = true;
+      windowing.show("#togetherjs-browser-unsupported", {
+        onClose: function () {
+          if (cancel) {
+            session.close();
+          } else {
+            next();
+          }
+        }
+      });
+      $("#togetherjs-browser-unsupported-anyway").click(function () {
+        cancel = false;
+      });
+    },
+
+    sessionIntro: function (next) {
+      // pgbovine - pop open chat
+      windowing.show("#togetherjs-chat");
+
+      if ((! session.isClient) || ! session.firstRun) {
+        next();
+        return;
+      }
+      TogetherJS.config.close("suppressJoinConfirmation");
+      if (TogetherJS.config.get("suppressJoinConfirmation")) {
+        next();
+        return;
+      }
+      var cancelled = false;
+      windowing.show("#togetherjs-intro", {
+        onClose: function () {
+          if (! cancelled) {
+            next();
+          }
+        }
+      });
+      $("#togetherjs-intro .togetherjs-modal-dont-join").click(function () {
+        cancelled = true;
+        windowing.hide();
+        session.close("declined-join");
+      });
+    },
+
+    // pgbovine - disable boilerplate walkthrough popup
+    walkthrough: function (next) {
+      next();
+    },
+    /*
+    walkthrough: function (next) {
+      storage.settings.get("seenIntroDialog").then(function (seenIntroDialog) {
+        if (seenIntroDialog) {
+          next();
+          return;
+        }
+        require(["walkthrough"], function (walkthrough) {
+          walkthrough.start(true, function () {
+            storage.settings.set("seenIntroDialog", true);
+            next();
+          });
+        });
+      });
+    },
+    */
+
+    share: function (next) {
+      TogetherJS.config.close("suppressInvite");
+      if (session.isClient || (! session.firstRun) ||
+          TogetherJS.config.get("suppressInvite")) {
+        next();
+        return;
+      }
+      require(["windowing"], function (windowing) {
+        windowing.show("#togetherjs-share");
+        // FIXME: no way to detect when the window is closed
+        // If there was a next() step then it would not work
+      });
+    }
+
+  };
+
+  return startup;
+});
diff --git a/v3/js/togetherjs/togetherjs/storage.js b/v3/js/togetherjs/togetherjs/storage.js
new file mode 100644
index 000000000..1378bd21f
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/storage.js
@@ -0,0 +1,142 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["util"], function (util) {
+  var assert = util.assert;
+  var Deferred = util.Deferred;
+  var DEFAULT_SETTINGS = {
+    name: "",
+    defaultName: "",
+    avatar: null,
+    stickyShare: null,
+    color: null,
+    seenIntroDialog: false,
+    seenWalkthrough: false,
+    dontShowRtcInfo: false
+  };
+
+  var DEBUG_STORAGE = false;
+
+  var Storage = util.Class({
+    constructor: function (name, storage, prefix) {
+      this.name = name;
+      this.storage = storage;
+      this.prefix = prefix;
+    },
+
+    get: function (key, defaultValue) {
+      var self = this;
+      return Deferred(function (def) {
+        // Strictly this isn't necessary, but eventually I want to move to something more
+        // async for the storage, and this simulates that much better.
+        setTimeout(util.resolver(def, function () {
+          key = self.prefix + key;
+          var value = self.storage.getItem(key);
+          if (! value) {
+            value = defaultValue;
+            if (DEBUG_STORAGE) {
+              console.debug("Get storage", key, "defaults to", value);
+            }
+          } else {
+            value = JSON.parse(value);
+            if (DEBUG_STORAGE) {
+              console.debug("Get storage", key, "=", value);
+            }
+          }
+          return value;
+        }));
+      });
+    },
+
+    set: function (key, value) {
+      var self = this;
+      if (value !== undefined) {
+        value = JSON.stringify(value);
+      }
+      return Deferred(function (def) {
+        key = self.prefix + key;
+        if (value === undefined) {
+          self.storage.removeItem(key);
+          if (DEBUG_STORAGE) {
+            console.debug("Delete storage", key);
+          }
+        } else {
+          self.storage.setItem(key, value);
+          if (DEBUG_STORAGE) {
+            console.debug("Set storage", key, value);
+          }
+        }
+        setTimeout(def.resolve);
+      });
+    },
+
+    clear: function () {
+      var self = this;
+      var promises = [];
+      return Deferred((function (def) {
+        this.keys().then(function (keys) {
+          keys.forEach(function (key) {
+            // FIXME: technically we're ignoring the promise returned by all
+            // these sets:
+            promises.push(self.set(key, undefined));
+          });
+          util.resolveMany(promises).then(function () {
+            def.resolve();
+          });
+        });
+      }).bind(this));
+    },
+
+    keys: function (prefix, excludePrefix) {
+      // Returns a list of keys, potentially with the given prefix
+      var self = this;
+      return Deferred(function (def) {
+        setTimeout(util.resolver(def, function () {
+          prefix = prefix || "";
+          var result = [];
+          for (var i = 0; i < self.storage.length; i++) {
+            var key = self.storage.key(i);
+            if (key.indexOf(self.prefix + prefix) === 0) {
+              var shortKey = key.substr(self.prefix.length);
+              if (excludePrefix) {
+                shortKey = shortKey.substr(prefix.length);
+              }
+              result.push(shortKey);
+            }
+          }
+          return result;
+        }));
+      });
+    },
+
+    toString: function () {
+      return '[storage for ' + this.name + ']';
+    }
+
+  });
+
+  var namePrefix = TogetherJS.config.get("storagePrefix");
+  TogetherJS.config.close("storagePrefix");
+
+  var storage = Storage('localStorage', localStorage, namePrefix + ".");
+
+  storage.settings = util.mixinEvents({
+    defaults: DEFAULT_SETTINGS,
+
+    get: function (name) {
+      assert(storage.settings.defaults.hasOwnProperty(name), "Unknown setting:", name);
+      return storage.get("settings." + name, storage.settings.defaults[name]);
+    },
+
+    set: function (name, value) {
+      assert(storage.settings.defaults.hasOwnProperty(name), "Unknown setting:", name);
+      return storage.set("settings." + name, value);
+    }
+
+  });
+
+  storage.tab = Storage('sessionStorage', sessionStorage, namePrefix + "-session.");
+
+  return storage;
+});
diff --git a/v3/js/togetherjs/togetherjs/templates-en-US.js b/v3/js/togetherjs/togetherjs/templates-en-US.js
new file mode 100644
index 000000000..dc042732b
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/templates-en-US.js
@@ -0,0 +1,11 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define([], function () {
+  return {
+    "interface": "<% /*\n   This is basically all the markup and interface for TogetherJS.\n   Note all links should be like http://localhost:8080/togetherjs/*\n   these links are rewritten with the location where TogetherJS was deployed.\n\n   This file is inlined into togetherjs/templates.js\n*/ %>\n<div id=\"togetherjs-container\" class=\"togetherjs\">\n\n  <!-- This is the main set of buttons: -->\n  <div id=\"togetherjs-dock\" class=\"togetherjs-dock-right\">\n    <div id=\"togetherjs-dock-anchor\" title=\"Move the dock\">\n      <span id=\"togetherjs-dock-anchor-horizontal\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n      <span id=\"togetherjs-dock-anchor-vertical\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n    </div>\n    <div id=\"togetherjs-buttons\">\n      <div style=\"display: none\">\n        <button id=\"togetherjs-template-dock-person\" class=\"togetherjs-button togetherjs-dock-person\">\n          <div class=\"togetherjs-tooltip togetherjs-dock-person-tooltip\">\n            <span class=\"togetherjs-person-name\"></span>\n            <span class=\"togetherjs-person-tooltip-arrow-r\"></span>\n          </div>\n          <div class=\"togetherjs-person togetherjs-person-status-overlay\"></div>\n        </button>\n      </div>\n      <button id=\"togetherjs-profile-button\" class=\"togetherjs-button\" title=\"This is you\">\n        <div class=\"togetherjs-person togetherjs-person-self\"></div>\n        <div id=\"togetherjs-profile-arrow\"></div>\n      </button>\n      <button id=\"togetherjs-share-button\" class=\"togetherjs-button\" title=\"Add a friend\"></button>\n      <button id=\"togetherjs-audio-button\" class=\"togetherjs-button\" title=\"Turn on microphone\">\n        <span id=\"togetherjs-audio-unavailable\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\">\n        </span>\n        <span id=\"togetherjs-audio-ready\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-outgoing\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-incoming\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-active\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-muted\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-error\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n      </button>\n      <button id=\"togetherjs-chat-button\" class=\"togetherjs-button\" title=\"Chat\"></button>\n      <div id=\"togetherjs-dock-participants\"></div>\n    </div>\n  </div>\n\n  <!-- The window for editing the avatar: -->\n  <div id=\"togetherjs-avatar-edit\" class=\"togetherjs-modal\"\n       style=\"display: none\">\n    <header> Update avatar </header>\n    <section>\n      <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n      <div id=\"togetherjs-avatar-buttons\">\n        <input type=\"file\" class=\"togetherjs-upload-avatar\">\n        <!--<button id=\"togetherjs-upload-avatar\" class=\"togetherjs-primary\">Upload a picture</button>-->\n        <!--<button id=\"togetherjs-camera-avatar\" class=\"togetherjs-default\">Take a picture</button>-->\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Cancel</button>\n      <span class=\"togetherjs-alt-text\">or</span>\n      <button class=\"togetherjs-avatar-save togetherjs-primary\">Save</button>\n    </section>\n  </div>\n\n  <!-- The window for sharing the link: -->\n  <div id=\"togetherjs-share\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-share-button\" style=\"display: none\">\n    <header> Invite a friend </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <p>Copy and paste this link over IM or email:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n      </div>\n      <div class=\"togetherjs-only-mobile\">\n        <p>Copy and paste this link over IM or email:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n        <!-- <a class=\"togetherjs-share-link\" href=\"#\">Press your thumb here.</a> -->\n      </div>\n    </section>\n  </div>\n\n  <!-- Participant Full List view template: -->\n  <div id=\"togetherjs-participantlist\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-participantlist-button\" style=\"display: none\">\n    <header> Participants </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <ul>\n          <li id=\"togetherjs-participant-item\">\n            <img class=\"togetherjs-person togetherjs-person-small\" src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\">\n            <span class=\"tj-name togetherjs-person-name\">NAME</span>\n            <span class=\"tj-status\">&#9679;</span>\n            <p class=\"tj-urllocation\">Currently at: <a class=\"togetherjs-person-url togetherjs-person-url-title\" href=\"\">http://www.location.comwww.location.comwww.location.comasdfsafd</a></p>\n            <p class=\"tj-follow\">Follow:\n              <label class=\"togetherjs-follow-question\" for=\"togetherjs-person-status-follow\">\n                <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n              </label>\n            </p>\n            <section class=\"togetherjs-buttons\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url\">\n                <a class=\"togetherjs-nudge togetherjs-default tj-btn-sm\">Nudge them</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary tj-btn-sm\">Join them</a>\n              </div>\n              <!-- Displayed when the peer is at your same URL: -->\n              <div class=\"togetherjs-same-url\" style=\"display: none\">\n                <span class=\"togetherjs-person-name\"></span> is on the same page as you.\n              </div>\n            </section>\n          </li>\n        </ul>\n    </section>\n  </div>\n\n  <!-- Participant detail template: -->\n  <div id=\"togetherjs-template-participant-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header><div class=\"togetherjs-person togetherjs-person-small\"></div><span class=\"togetherjs-person-name\"></span></header>\n\n    <section class=\"togetherjs-participant-window-main\">\n      <p class=\"togetherjs-participant-window-row\"><strong>Role:</strong>\n        <span class=\"togetherjs-person-role\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Currently at:</strong>\n        <a class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Status:</strong>\n        <span class=\"togetherjs-person-status\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong class=\"togetherjs-float-left\">Follow this participant:</strong>\n        <label class=\"togetherjs-follow-question togetherjs-float-left\" for=\"togetherjs-person-status-follow\">\n          <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n        </label>\n        <span class=\"togetherjs-clear\"></span>\n      </p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <!-- Displayed when the peer is at a different URL: -->\n      <div class=\"togetherjs-different-url\">\n        <a class=\"togetherjs-nudge togetherjs-default\">Nudge them</a>\n        <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Join them</a>\n      </div>\n      <!-- Displayed when the peer is at your same URL: -->\n      <div class=\"togetherjs-same-url\" style=\"display: none\">\n        <span class=\"togetherjs-person-name\"></span> is on the same page as you.\n      </div>\n    </section>\n  </div>\n\n  <!-- The chat screen: -->\n  <div id=\"togetherjs-chat\" class=\"togetherjs-window\" data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <header> Chat </header>\n    <section class=\"togetherjs-subtitle\">\n      <div id=\"togetherjs-chat-participants\" data-toggles=\"#togetherjs-chat-no-participants\" style=\"display: none\">\n        <span id=\"togetherjs-chat-participant-list\"></span>\n        &amp; You\n      </div>\n      <!-- pgbovine - add a better default message\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        No one else is here.\n      </div>\n      -->\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        Nobody is here yet. Please wait ...\n      </div>\n\n    </section>\n\n    <div style=\"display: none\">\n\n      <!-- Template for one message: -->\n      <div id=\"togetherjs-template-chat-message\" class=\"togetherjs-chat-item togetherjs-chat-message\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-timestamp\"><span class=\"togetherjs-time\">HH:MM</span> <span class=\"togetherjs-ampm\">AM/PM</span></div>\n        <div class=\"togetherjs-person-name-abbrev\"></div>\n        <div class=\"togetherjs-chat-content togetherjs-sub-content\"></div>\n      </div>\n\n      <!-- Template for when a person leaves: -->\n      <div id=\"togetherjs-template-chat-left\" class=\"togetherjs-chat-item togetherjs-chat-left-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-ifnot-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> left the session.</div>\n        </div>\n        <div class=\"togetherjs-if-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> declined to join the session.</div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> joined the session.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template for system-derived messages: -->\n      <div id=\"togetherjs-template-chat-system\" class=\"togetherjs-chat-item\">\n        <span class=\"togetherjs-chat-content togetherjs-sub-content\"></span>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <!-- <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> joined the session.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div> -->\n\n      <!-- Template for when someone goes to a new URL: -->\n      <div id=\"togetherjs-template-url-change\" class=\"togetherjs-chat-item togetherjs-chat-url-change\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\">\n          <div class=\"togetherjs-if-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            is on the same page as you.\n          </div>\n          <div class=\"togetherjs-ifnot-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            has gone to: <a href=\"#\" class=\"togetherjs-person-url togetherjs-person-url-title\" target=\"_self\"></a>\n            <section class=\"togetherjs-buttons togetherjs-buttons-notification-diff-url\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url togetherjs-notification-diff-url\">\n                <a class=\"togetherjs-nudge togetherjs-default\">Nudge them</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Join them</a>\n              </div>\n            </section>\n\n            <!-- <div>\n              <a class=\"togetherjs-nudge togetherjs-secondary\">Nudge them</a>\n              <a href=\"\" class=\"togetherjs-person-url togetherjs-follow togetherjs-primary\">Join them</a>\n            </div> -->\n\n          </div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n    </div>\n\n    <section id=\"togetherjs-chat-messages\">\n      <!-- FIX ME// need to have some dialogue that says something like - There are no chats yet! -->\n    </section>\n    <section id=\"togetherjs-chat-input-box\">\n      <textarea id=\"togetherjs-chat-input\" placeholder=\"Type your message here\"></textarea>\n    </section>\n  </div>\n\n  <!-- this is a kind of warning popped up when you (successfully) start RTC: -->\n  <div id=\"togetherjs-rtc-info\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n\n    <header> Audio Chat </header>\n    <section>\n      <p>\n        Activate your <strong>browser microphone</strong> near your URL bar above.\n      </p>\n      <p>\n        Talking on your microphone through your web browser is an experimental feature.\n      </p>\n      <p>\n        Read more about Audio Chat <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <label for=\"togetherjs-rtc-info-dismiss\" style=\"display: inline;\">\n        <input class=\"togetherjs-dont-show-again\" id=\"togetherjs-rtc-info-dismiss\" type=\"checkbox\">\n        Don't show again.\n      </label>\n      <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Close</button>\n    </section>\n  </div>\n\n  <!-- this is popped up when you hit the audio button, but RTC isn't\n  supported: -->\n  <div id=\"togetherjs-rtc-not-supported\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n    <header> Audio Chat </header>\n\n    <section>\n      <p>Audio chat requires you to use a <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>newer browser</a>!</p>\n      <p>\n        Live audio chat requires a newer (or different) browser than you're using.\n      </p>\n      <p>\n        See <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>this page</a>for more information and a list of supported browsers.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <div class=\"togetherjs-rtc-dialog-btn\">\n        <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Close</button>\n      </div>\n    </section>\n  </div>\n\n  <!-- The popup when a chat message comes in and the #togetherjs-chat window isn't open -->\n  <div id=\"togetherjs-chat-notifier\" class=\"togetherjs-notification\"\n       data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-togetherjs-logo.png\" class=\"togetherjs-notification-logo\" alt=\"\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-btn-close.png\" class=\"togetherjs-notification-closebtn togetherjs-dismiss\" alt=\"[close]\">\n    <section id=\"togetherjs-chat-notifier-message\">\n    </section>\n  </div>\n\n  <!-- The menu when you click on the profile: -->\n  <div id=\"togetherjs-menu\" class=\"togetherjs-menu\" style=\"display: none\">\n    <div class=\"togetherjs-menu-item togetherjs-menu-disabled\" id=\"togetherjs-menu-profile\">\n      <img id=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\" data-toggles=\"#togetherjs-menu .togetherjs-self-name\">[nickname]</span>\n      <input class=\"togetherjs-self-name\" type=\"text\" data-toggles=\"#togetherjs-self-name-display\" style=\"display: none\" placeholder=\"Enter your name\">\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Update your name</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Change avatar</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color\"><span class=\"togetherjs-person-bgcolor-self\"></span> Pick profile color</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help\">Help</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback\">Feedback</div>\n    <div id=\"togetherjs-invite\" style=\"display: none\">\n      <div class=\"togetherjs-hr\"></div>\n      <div id=\"togetherjs-invite-users\"></div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-refresh-invite\">Refresh users</div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-invite-anyone\">Invite anyone</div>\n    </div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> End <span class=\"togetherjs-tool-name\">TogetherJS</span></div>\n  </div>\n\n  <!-- template for one person in the invite-users list -->\n  <div style=\"display: none\">\n    <div id=\"togetherjs-template-invite-user-item\" class=\"togetherjs-menu-item\">\n      <!-- FIXME: should include avatar in some way -->\n      <span class=\"togetherjs-person-name\"></span>\n    </div>\n  </div>\n\n  <!-- A window version of #togetherjs-menu, for use on mobile -->\n  <div id=\"togetherjs-menu-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Settings and Profile</header>\n    <section>\n    <div class=\"togetherjs-menu-item\">\n      <img class=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\"></span>\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name-button\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Update your name</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar-button\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Change avatar</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color-button\"><span class=\"togetherjs-person-bgcolor-self\"></span> Pick profile color</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help-button\">Help</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback-button\">Feedback</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end-button\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> End TOOL_NAME</div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">OK</button>\n    </section>\n  </div>\n\n  <!-- The name editor, for use on mobile -->\n  <div id=\"togetherjs-edit-name-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Update Name</header>\n    <section>\n      <div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Enter your name\">\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">OK</button>\n    </section>\n  </div>\n\n  <div class=\"togetherjs-menu\" id=\"togetherjs-pick-color\" style=\"display: none\">\n    <div class=\"togetherjs-triangle-up\"><img src=\"http://localhost:8080/togetherjs/images/icn-triangle-up.png\"></div>\n    <div style=\"display: none\">\n      <div id=\"togetherjs-template-swatch\" class=\"togetherjs-swatch\">\n      </div>\n    </div>\n  </div>\n\n  <!-- Invisible elements that handle the RTC audio: -->\n  <audio id=\"togetherjs-audio-element\"></audio>\n  <audio id=\"togetherjs-local-audio\" muted=\"true\" volume=\"0.3\"></audio>\n  <audio id=\"togetherjs-notification\" src=\"http://localhost:8080/togetherjs/images/notification.ogg\"></audio>\n\n  <!-- The intro screen for someone who joins a session the first time: -->\n  <div id=\"togetherjs-intro\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header>Join TOOL_NAME session?</header>\n    <section>\n      <p>Your friend has asked you to join their TOOL_SITE_LINK browser session to collaborate in real-time!</p>\n      <p>Would you like to join their session?</p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-destructive togetherjs-modal-dont-join\">No, don't join</button>\n      <button class=\"togetherjs-primary togetherjs-dismiss\">Yes, join session</button>\n    </section>\n  </div>\n\n  <!-- Shown when a web browser is completely incapable of running TogetherJS: -->\n  <div id=\"togetherjs-browser-broken\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Sorry </header>\n\n    <section>\n      <p>\n        We're sorry, TOOL_NAME doesn't work with this browser.  Please <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>upgrade to a supported browser</a> to try TOOL_NAME.\n      </p>\n\n      <p id=\"togetherjs-browser-broken-is-ie\" style=\"display: none\">\n        We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">End TOOL_NAME</button>\n    </section>\n\n  </div>\n\n  <!-- Shown when the browser has WebSockets, but is IE (i.e., IE10) -->\n  <div id=\"togetherjs-browser-unsupported\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Unsupported Browser </header>\n\n    <section>\n      <p>\n        We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.\n      </p>\n\n      <p>You can continue to try to use TOOL_NAME, but you are likely to hit lots of bugs.  So be warned.</p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">End TOOL_NAME</button>\n      <button class=\"togetherjs-dismiss togetherjs-secondary togetherjs-browser-unsupported-anyway\">Try TOOL_NAME Anyway</button>\n    </section>\n\n  </div>\n\n  <div id=\"togetherjs-confirm-end\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> End session? </header>\n    <section>\n      <p>\n        Are you sure you'd like to end your TOOL_NAME session?\n      </p>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Cancel</button>\n      <span class=\"togetherjs-alt-text\">or</span>\n      <button id=\"togetherjs-end-session\" class=\"togetherjs-destructive\">End session</button>\n    </section>\n  </div>\n\n  <div id=\"togetherjs-feedback-form\" class=\"togetherjs-modal\" style=\"display: none;\">\n    <header> Feedback </header>\n    <iframe src=\"https://docs.google.com/a/mozilla.com/forms/d/1lVE7JyRo_tjakN0mLG1Cd9X9vseBX9wci153z9JcNEs/viewform?embedded=true\" width=\"400\" height=\"300\" frameborder=\"0\" marginheight=\"0\" marginwidth=\"0\">Loading form...</iframe>\n    <!-- <p><button class=\"togetherjs-modal-close\">Close</button></p> -->\n  </div>\n\n  <div style=\"display: none\">\n    <!-- This is when you join a session and the other person has already changed to another URL: -->\n    <div id=\"togetherjs-template-url-change\" class=\"togetherjs-modal\">\n      <header> Following to new URL... </header>\n      <section>\n        <div class=\"togetherjs-person\"></div>\n        Following\n        <span class=\"togetherjs-person-name\"></span>\n        to <a href=\"\" class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </section>\n    </div>\n\n    <!-- This is when someone invites you to their session: -->\n    <div id=\"togetherjs-template-invite\" class=\"togetherjs-chat-item\">\n      <div class=\"togetherjs-person\"></div>\n      <div>\n        <span class=\"togetherjs-person-name\"></span>\n        has invited <strong class=\"togetherjs-if-forEveryone\">anyone</strong>\n        <strong class=\"togetherjs-ifnot-forEveryone\">you</strong>\n        to <a href=\"\" data-togetherjs-subattr-href=\"href\" class=\"togetherjs-sub-hrefTitle\" target=\"_blank\"></a>\n      </div>\n    </div>\n\n  </div>\n\n  <!-- The pointer at the side of a window: -->\n  <div id=\"togetherjs-window-pointer-right\" style=\"display: none\"></div>\n  <div id=\"togetherjs-window-pointer-left\" style=\"display: none\"></div>\n\n  <!-- The element that overlaps the background of the page during a modal dialog: -->\n  <div id=\"togetherjs-modal-background\" style=\"display: none\"></div>\n\n  <!-- Some miscellaneous templates -->\n  <div style=\"display: none\">\n\n    <!-- This is the cursor: -->\n    <div id=\"togetherjs-template-cursor\" class=\"togetherjs-cursor togetherjs\">\n      <!-- Note: images/cursor.svg is a copy of this (for editing): -->\n      <!-- crossbrowser svg dropshadow http://demosthenes.info/blog/600/Creating-a-True-CrossBrowser-Drop-Shadow- -->\n      <svg version=\"1.1\" id=\"Layer_1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" x=\"0px\" y=\"0px\"\n      \t width=\"15px\" height=\"22.838px\" viewBox=\"96.344 146.692 15 22.838\" enable-background=\"new 96.344 146.692 15 22.838\"\n      \t xml:space=\"preserve\">\n      <path fill=\"#231F20\" d=\"M98.984,146.692c2.167,1.322,1.624,6.067,3.773,7.298c-0.072-0.488,2.512-0.931,3.097,0\n      \tc0.503,0.337,1.104-0.846,2.653,0.443c0.555,0.593,3.258,2.179,1.001,8.851c-0.446,1.316,2.854,0.135,1.169,2.619\n      \tc-3.748,5.521-9.455,2.787-9.062,1.746c1.06-2.809-6.889-4.885-4.97-9.896c0.834-2.559,2.898,0.653,2.923,0.29\n      \tc-0.434-1.07-2.608-5.541-2.923-6.985C96.587,150.793,95.342,147.033,98.984,146.692z\"/>\n      </svg>\n      <!-- <img class=\"togetherjs-cursor-img\" src=\"http://localhost:8080/togetherjs/images/cursor.svg\"> -->\n      <span class=\"togetherjs-cursor-container\">\n        <span class=\"togetherjs-cursor-name\"></span>\n        <span style=\"display:none\" class=\"togetherjs-cursor-typing\" id=\"togetherjs-cursor-typebox\">\n          <span class=\"togetherjs-typing-ellipse-one\">&#9679;</span><span class=\"togetherjs-typing-ellipse-two\">&#9679;</span><span class=\"togetherjs-typing-ellipse-three\">&#9679;</span>\n        </span>\n        <!-- Displayed when the cursor is below the screen: -->\n        <span class=\"togetherjs-cursor-down\">\n\n        </span>\n        <!-- Displayed when the cursor is above the screen: -->\n        <span class=\"togetherjs-cursor-up\">\n\n        </span>\n      </span>\n    </div>\n\n    <!-- This is the element that goes around focused form elements: -->\n    <div id=\"togetherjs-template-focus\">\n      <div class=\"togetherjs-focus togetherjs-person-bordercolor\"></div>\n    </div>\n\n    <!-- This is a click: -->\n    <div id=\"togetherjs-template-click\" class=\"togetherjs-click togetherjs\">\n    </div>\n  </div>\n</div>\n",
+    walkthrough: "<!--\n    Any elements with .togetherjs-walkthrough-firsttime will only be\n    displayed on during the first-time experience.  Any elements with\n    .togetherjs-walkthrough-not-firsttime will only be displayed when\n    the walkthrough is accessed through the Help menu.\n\n    Note you *cannot* use <section class=\"togetherjs-walkthrough-slide\n    togetherjs-walkthrough-firsttime\">: the number of sections must be the\n    same regardless.\n  -->\n<div id=\"togetherjs-walkthrough\" class=\"togetherjs-modal togetherjs-modal-wide\">\n  <header>You're using TOOL_NAME!<button class=\"togetherjs-close\"></button></header>\n\n  <div id=\"togetherjs-walkthrough-previous\"></div>\n  <div id=\"togetherjs-walkthrough-next\"></div>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-intro.png\"></p>\n\t<p>TOOL_NAME is a service for your website that makes it easy to collaborate in real-time on SITE_NAME </p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <div class=\"togetherjs-walkthrough-firsttime\">\n      <div class=\"togetherjs-walkthrough-main-image\">\n        <div class=\"togetherjs-walkthrough-avatar-section\">\n          <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n          <div class=\"togetherjs-avatar-upload-input\"><input type=\"file\" class=\"togetherjs-upload-avatar\"></div>\n        </div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Enter your name\">\n        <div class=\"togetherjs-swatch togetherjs-person-bgcolor-self\"></div>\n        <div class=\"togetherjs-save-settings\">\n          <button class=\"togetherjs-avatar-save togetherjs-primary\">\n            <span id=\"togetherjs-avatar-when-unsaved\">\"\"Save\"\"</span>\n            <span id=\"togetherjs-avatar-when-saved\" style=\"display: none\">Saved!</span>\n          </button>\n        </div>\n      </div>\n      <p>Set up your avatar, name and user color above.  If you'd like to update it later, you can click your Profile button.</p>\n    </div>\n    <div class=\"togetherjs-walkthrough-not-firsttime\">\n      <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-profile.png\"></p>\n      <p>Change your avatar, name and user color using the Profile button.</p>\n    </div>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-ifnot-creator\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-invite.png\">\n    </p>\n    <p class=\"togetherjs-ifnot-creator\">You can invite more friends to the session by sending the invite link in the TOOL_NAME dock.</p>\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-if-creator\">\n      <span class=\"togetherjs-walkthrough-sendlink\">\n        Copy and paste this link into IM or email to invite friends.\n      </span>\n      <input type=\"text\" class=\"togetherjs-share-link\">\n    </p>\n    <p class=\"togetherjs-if-creator\">Send the above link to a friend so they can join your session!  You can find this invite link on the TOOL_NAME dock as well.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-participant.png\"></p>\n    <p>Friends who join your TOOL_NAME session will appear here.  You can click their avatars to see more.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-chat.png\"></p>\n    <p>When your friends join you in your TOOL_NAME session, you can chat with them here!</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-rtc.png\"></p>\n    <p>If your browser supports it, click the microphone icon to begin a audio chat. Learn more about this experimental feature <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-logo.png\"></p>\n    <p>Alright, you're ready to use TOOL_NAME. Now start collaborating on SITE_NAME!</p>\n  </section>\n\n  <div style=\"display: none\">\n    <!-- There is one of these created for each slide: -->\n    <span id=\"togetherjs-template-walkthrough-slide-progress\" class=\"togetherjs-walkthrough-slide-progress\">&#9679;</span>\n  </div>\n  <section id=\"togetherjs-walkthrough-progress\">\n  </section>\n\n  <section class=\"togetherjs-buttons\">\n    <button class=\"togetherjs-primary togetherjs-dismiss\">I'm ready!</button>\n  </section>\n\n</div><!-- /.togetherjs-modal -->\n",
+    names: "Friendly Fox, Brilliant Beaver, Observant Owl, Gregarious Giraffe, Wild Wolf, Silent Seal, Wacky Whale, Curious Cat, Intelligent Iguana"
+  };
+});
diff --git a/v3/js/togetherjs/togetherjs/templates-ru.js b/v3/js/togetherjs/togetherjs/templates-ru.js
new file mode 100644
index 000000000..6b00ac358
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/templates-ru.js
@@ -0,0 +1,11 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define([], function () {
+  return {
+    "interface": "<% /*\n   This is basically all the markup and interface for TogetherJS.\n   Note all links should be like http://localhost:8080/togetherjs/*\n   these links are rewritten with the location where TogetherJS was deployed.\n\n   This file is inlined into togetherjs/templates.js\n*/ %>\n<div id=\"togetherjs-container\" class=\"togetherjs\">\n\n  <!-- This is the main set of buttons: -->\n  <div id=\"togetherjs-dock\" class=\"togetherjs-dock-right\">\n    <div id=\"togetherjs-dock-anchor\" title=\"Передвинуть панель\">\n      <span id=\"togetherjs-dock-anchor-horizontal\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n      <span id=\"togetherjs-dock-anchor-vertical\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n    </div>\n    <div id=\"togetherjs-buttons\">\n      <div style=\"display: none\">\n        <button id=\"togetherjs-template-dock-person\" class=\"togetherjs-button togetherjs-dock-person\">\n          <div class=\"togetherjs-tooltip togetherjs-dock-person-tooltip\">\n            <span class=\"togetherjs-person-name\"></span>\n            <span class=\"togetherjs-person-tooltip-arrow-r\"></span>\n          </div>\n          <div class=\"togetherjs-person togetherjs-person-status-overlay\"></div>\n        </button>\n      </div>\n      <button id=\"togetherjs-profile-button\" class=\"togetherjs-button\" title=\"Это Вы\">\n        <div class=\"togetherjs-person togetherjs-person-self\"></div>\n        <div id=\"togetherjs-profile-arrow\"></div>\n      </button>\n      <button id=\"togetherjs-share-button\" class=\"togetherjs-button\" title=\"Добавить друга\"></button>\n      <button id=\"togetherjs-audio-button\" class=\"togetherjs-button\" title=\"Включить микрофон\">\n        <span id=\"togetherjs-audio-unavailable\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\">\n        </span>\n        <span id=\"togetherjs-audio-ready\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-outgoing\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-incoming\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-active\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-muted\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-error\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n      </button>\n      <button id=\"togetherjs-chat-button\" class=\"togetherjs-button\" title=\"Чат\"></button>\n      <div id=\"togetherjs-dock-participants\"></div>\n    </div>\n  </div>\n\n  <!-- The window for editing the avatar: -->\n  <div id=\"togetherjs-avatar-edit\" class=\"togetherjs-modal\"\n       style=\"display: none\">\n    <header> Обновить аватар </header>\n    <section>\n      <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n      <div id=\"togetherjs-avatar-buttons\">\n        <input type=\"file\" class=\"togetherjs-upload-avatar\">\n        <!--<button id=\"togetherjs-upload-avatar\" class=\"togetherjs-primary\">Upload a picture</button>-->\n        <!--<button id=\"togetherjs-camera-avatar\" class=\"togetherjs-default\">Take a picture</button>-->\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Отмена</button>\n      <span class=\"togetherjs-alt-text\">или</span>\n      <button class=\"togetherjs-avatar-save togetherjs-primary\">Сохранить</button>\n    </section>\n  </div>\n\n  <!-- The window for sharing the link: -->\n  <div id=\"togetherjs-share\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-share-button\" style=\"display: none\">\n    <header> Пригласить друга </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <p>Скопируйте эту ссылку и приклейте её в IM или в имейл:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n      </div>\n      <div class=\"togetherjs-only-mobile\">\n        <p>Скопируйте эту ссылку и приклейте её в IM или в имейл:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n        <!-- <a class=\"togetherjs-share-link\" href=\"#\">Press your thumb here.</a> -->\n      </div>\n    </section>\n  </div>\n\n  <!-- Participant Full List view template: -->\n  <div id=\"togetherjs-participantlist\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-participantlist-button\" style=\"display: none\">\n    <header> Участники </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <ul>\n          <li id=\"togetherjs-participant-item\">\n            <img class=\"togetherjs-person togetherjs-person-small\" src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\">\n            <span class=\"tj-name togetherjs-person-name\">NAME</span>\n            <span class=\"tj-status\">&#9679;</span>\n            <p class=\"tj-urllocation\">Сейчас на: <a class=\"togetherjs-person-url togetherjs-person-url-title\" href=\"\">http://www.location.comwww.location.comwww.location.comasdfsafd</a></p>\n            <p class=\"tj-follow\">Последовать:\n              <label class=\"togetherjs-follow-question\" for=\"togetherjs-person-status-follow\">\n                <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n              </label>\n            </p>\n            <section class=\"togetherjs-buttons\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url\">\n                <a class=\"togetherjs-nudge togetherjs-default tj-btn-sm\">Толкнуть друга</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary tj-btn-sm\">Присоединиться к нему</a>\n              </div>\n              <!-- Displayed when the peer is at your same URL: -->\n              <div class=\"togetherjs-same-url\" style=\"display: none\">\n                <span class=\"togetherjs-person-name\"></span> с Вами на одной странице.\n              </div>\n            </section>\n          </li>\n        </ul>\n    </section>\n  </div>\n\n  <!-- Participant detail template: -->\n  <div id=\"togetherjs-template-participant-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header><div class=\"togetherjs-person togetherjs-person-small\"></div><span class=\"togetherjs-person-name\"></span></header>\n\n    <section class=\"togetherjs-participant-window-main\">\n      <p class=\"togetherjs-participant-window-row\"><strong>Роль:</strong>\n        <span class=\"togetherjs-person-role\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Сейчас на:</strong>\n        <a class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Статус:</strong>\n        <span class=\"togetherjs-person-status\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong class=\"togetherjs-float-left\">Следовать за этим участником:</strong>\n        <label class=\"togetherjs-follow-question togetherjs-float-left\" for=\"togetherjs-person-status-follow\">\n          <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n        </label>\n        <span class=\"togetherjs-clear\"></span>\n      </p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <!-- Displayed when the peer is at a different URL: -->\n      <div class=\"togetherjs-different-url\">\n        <a class=\"togetherjs-nudge togetherjs-default\">Толкнуть друга</a>\n        <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Присоединиться к нему</a>\n      </div>\n      <!-- Displayed when the peer is at your same URL: -->\n      <div class=\"togetherjs-same-url\" style=\"display: none\">\n        <span class=\"togetherjs-person-name\"></span> с Вами на одной странице.\n      </div>\n    </section>\n  </div>\n\n  <!-- The chat screen: -->\n  <div id=\"togetherjs-chat\" class=\"togetherjs-window\" data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <header> Чат </header>\n    <section class=\"togetherjs-subtitle\">\n      <div id=\"togetherjs-chat-participants\" data-toggles=\"#togetherjs-chat-no-participants\" style=\"display: none\">\n        <span id=\"togetherjs-chat-participant-list\"></span>\n        &amp; Вы\n      </div>\n      <!-- pgbovine - add a better default message\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        Здесь больше никого нет.\n      </div>\n      -->\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        Nobody is here yet. Please wait ...\n      </div>\n\n    </section>\n\n    <div style=\"display: none\">\n\n      <!-- Template for one message: -->\n      <div id=\"togetherjs-template-chat-message\" class=\"togetherjs-chat-item togetherjs-chat-message\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-timestamp\"><span class=\"togetherjs-time\">HH:MM</span> <span class=\"togetherjs-ampm\">AM/PM</span></div>\n        <div class=\"togetherjs-person-name-abbrev\"></div>\n        <div class=\"togetherjs-chat-content togetherjs-sub-content\"></div>\n      </div>\n\n      <!-- Template for when a person leaves: -->\n      <div id=\"togetherjs-template-chat-left\" class=\"togetherjs-chat-item togetherjs-chat-left-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-ifnot-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> покинул сеанс.</div>\n        </div>\n        <div class=\"togetherjs-if-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> отказался присоединиться к сеансу.</div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> присоединился к сеансу.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template for system-derived messages: -->\n      <div id=\"togetherjs-template-chat-system\" class=\"togetherjs-chat-item\">\n        <span class=\"togetherjs-chat-content togetherjs-sub-content\"></span>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <!-- <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> joined the session.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div> -->\n\n      <!-- Template for when someone goes to a new URL: -->\n      <div id=\"togetherjs-template-url-change\" class=\"togetherjs-chat-item togetherjs-chat-url-change\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\">\n          <div class=\"togetherjs-if-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            с Вами на одной странице.\n          </div>\n          <div class=\"togetherjs-ifnot-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            отправился на: <a href=\"#\" class=\"togetherjs-person-url togetherjs-person-url-title\" target=\"_self\"></a>\n            <section class=\"togetherjs-buttons togetherjs-buttons-notification-diff-url\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url togetherjs-notification-diff-url\">\n                <a class=\"togetherjs-nudge togetherjs-default\">Толкнуть друга</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Присоединиться к нему</a>\n              </div>\n            </section>\n\n            <!-- <div>\n              <a class=\"togetherjs-nudge togetherjs-secondary\">Nudge them</a>\n              <a href=\"\" class=\"togetherjs-person-url togetherjs-follow togetherjs-primary\">Join them</a>\n            </div> -->\n\n          </div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n    </div>\n\n    <section id=\"togetherjs-chat-messages\">\n      <!-- FIX ME// need to have some dialogue that says something like - There are no chats yet! -->\n    </section>\n    <section id=\"togetherjs-chat-input-box\">\n      <textarea id=\"togetherjs-chat-input\" placeholder=\"Напечатайте своё сообщение здесь\"></textarea>\n    </section>\n  </div>\n\n  <!-- this is a kind of warning popped up when you (successfully) start RTC: -->\n  <div id=\"togetherjs-rtc-info\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n\n    <header> Аудио-чат </header>\n    <section>\n      <p>\n        Включите <strong>микрофон браузера</strong> возле адресной строки вверху.\n      </p>\n      <p>\n        Разговор по микрофону через веб-браузер - экспериментальное свойство.\n      </p>\n      <p>\n        Почитайте больше об аудио-чате <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">здесь</a>.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <label for=\"togetherjs-rtc-info-dismiss\" style=\"display: inline;\">\n        <input class=\"togetherjs-dont-show-again\" id=\"togetherjs-rtc-info-dismiss\" type=\"checkbox\">\n        Больше не показывать.\n      </label>\n      <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Закрыть</button>\n    </section>\n  </div>\n\n  <!-- this is popped up when you hit the audio button, but RTC isn't\n  supported: -->\n  <div id=\"togetherjs-rtc-not-supported\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n    <header> Аудио-чат </header>\n\n    <section>\n      <p>Аудио-чат требует, чтобы Вы использовали<a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>браузер поновее</a>!</p>\n      <p>\n        Для живого аудио-чата требуется более новый (или другой) браузер, чем тот, который Вы используете.\n      </p>\n      <p>\n        Посмотрите на <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>'этой странице'</a> дополнительную информацию и список поддерживаемых браузеров.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <div class=\"togetherjs-rtc-dialog-btn\">\n        <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Закрыть</button>\n      </div>\n    </section>\n  </div>\n\n  <!-- The popup when a chat message comes in and the #togetherjs-chat window isn't open -->\n  <div id=\"togetherjs-chat-notifier\" class=\"togetherjs-notification\"\n       data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-togetherjs-logo.png\" class=\"togetherjs-notification-logo\" alt=\"\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-btn-close.png\" class=\"togetherjs-notification-closebtn togetherjs-dismiss\" alt=\"[close]\">\n    <section id=\"togetherjs-chat-notifier-message\">\n    </section>\n  </div>\n\n  <!-- The menu when you click on the profile: -->\n  <div id=\"togetherjs-menu\" class=\"togetherjs-menu\" style=\"display: none\">\n    <div class=\"togetherjs-menu-item togetherjs-menu-disabled\" id=\"togetherjs-menu-profile\">\n      <img id=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\" data-toggles=\"#togetherjs-menu .togetherjs-self-name\">[nickname]</span>\n      <input class=\"togetherjs-self-name\" type=\"text\" data-toggles=\"#togetherjs-self-name-display\" style=\"display: none\" placeholder=\"Введите своё имя\">\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Обновить своё имя</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Изменить аватар</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color\"><span class=\"togetherjs-person-bgcolor-self\"></span> Выбрать цвет профиля</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help\">Помощь</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback\">Отзывы и предложения</div>\n    <div id=\"togetherjs-invite\" style=\"display: none\">\n      <div class=\"togetherjs-hr\"></div>\n      <div id=\"togetherjs-invite-users\"></div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-refresh-invite\">Refresh users</div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-invite-anyone\">Пригласить кого-нибудь</div>\n    </div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> Закончить <span class=\"togetherjs-tool-name\">TogetherJS</span></div>\n  </div>\n\n  <!-- template for one person in the invite-users list -->\n  <div style=\"display: none\">\n    <div id=\"togetherjs-template-invite-user-item\" class=\"togetherjs-menu-item\">\n      <!-- FIXME: should include avatar in some way -->\n      <span class=\"togetherjs-person-name\"></span>\n    </div>\n  </div>\n\n  <!-- A window version of #togetherjs-menu, for use on mobile -->\n  <div id=\"togetherjs-menu-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Установки и профиль</header>\n    <section>\n    <div class=\"togetherjs-menu-item\">\n      <img class=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\"></span>\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name-button\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Обновить своё имя</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar-button\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Изменить аватар</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color-button\"><span class=\"togetherjs-person-bgcolor-self\"></span> Выбрать цвет профиля</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help-button\">Помощь</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback-button\">Отзывы и предложения</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end-button\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> Закончить TOOL_NAME</div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Хорошо</button>\n    </section>\n  </div>\n\n  <!-- The name editor, for use on mobile -->\n  <div id=\"togetherjs-edit-name-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Обновить имя</header>\n    <section>\n      <div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Введите своё имя\">\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Хорошо</button>\n    </section>\n  </div>\n\n  <div class=\"togetherjs-menu\" id=\"togetherjs-pick-color\" style=\"display: none\">\n    <div class=\"togetherjs-triangle-up\"><img src=\"http://localhost:8080/togetherjs/images/icn-triangle-up.png\"></div>\n    <div style=\"display: none\">\n      <div id=\"togetherjs-template-swatch\" class=\"togetherjs-swatch\">\n      </div>\n    </div>\n  </div>\n\n  <!-- Invisible elements that handle the RTC audio: -->\n  <audio id=\"togetherjs-audio-element\"></audio>\n  <audio id=\"togetherjs-local-audio\" muted=\"true\" volume=\"0.3\"></audio>\n  <audio id=\"togetherjs-notification\" src=\"http://localhost:8080/togetherjs/images/notification.ogg\"></audio>\n\n  <!-- The intro screen for someone who joins a session the first time: -->\n  <div id=\"togetherjs-intro\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header>Присоединиться к сеансу TOOL_NAME?</header>\n    <section>\n      <p>Ваш друг просит Вас присоединиться к его TOOL_SITE_LINK браузер-сеансу, чтобы сотрудничать с Вами в реальном времени!</p>\n      <p>Хотели бы Вы присоединиться к его сеансу?</p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-destructive togetherjs-modal-dont-join\">Нет, не присоединяться</button>\n      <button class=\"togetherjs-primary togetherjs-dismiss\">Да, присоединиться к сеансу</button>\n    </section>\n  </div>\n\n  <!-- Shown when a web browser is completely incapable of running TogetherJS: -->\n  <div id=\"togetherjs-browser-broken\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Извините </header>\n\n    <section>\n      <p>\n        Извините, TOOL_NAME не работает на этом браузере. Просьба <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>обновиться до поддерживаемого браузера</a>, чтобы попробовать TOOL_NAME.\n      </p>\n\n      <p id=\"togetherjs-browser-broken-is-ie\" style=\"display: none\">\n        Нам нужна Ваша помощь в починке TogetherJS на Internet Explorer!  Вот список <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">ошибок на GitHub</a>, которые нам нужно починить, и над которыми Вы можете поработать.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\"> в настоящее время не поддерживается</a>.  Если Вы действительно хотите испытать TogetherJS, советуем Вам использовать Firefox или Chrome.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Закончить TOOL_NAME</button>\n    </section>\n\n  </div>\n\n  <!-- Shown when the browser has WebSockets, but is IE (i.e., IE10) -->\n  <div id=\"togetherjs-browser-unsupported\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Браузер не поддерживается </header>\n\n    <section>\n      <p>\n        Нам нужна Ваша помощь в починке TogetherJS на Internet Explorer!  Вот список <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">ошибок на GitHub</a>, которые нам нужно починить, и над которыми Вы можете поработать.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\"> в настоящее время не поддерживается</a>.  Если Вы действительно хотите испытать TogetherJS, советуем Вам использовать Firefox или Chrome.\n      </p>\n\n      <p>Вы можете продолжать пробовать использовать TOOL_NAME, но скорее всего Вы получите массу ошибок. Мы Вас предупредили.</p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Закончить TOOL_NAME</button>\n      <button class=\"togetherjs-dismiss togetherjs-secondary togetherjs-browser-unsupported-anyway\">Всё равно попробовать TOOL_NAME</button>\n    </section>\n\n  </div>\n\n  <div id=\"togetherjs-confirm-end\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Закончить сеанс? </header>\n    <section>\n      <p>\n        Вы уверены, что хотите завершить свой сеанс TOOL_NAME?\n      </p>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Отмена</button>\n      <span class=\"togetherjs-alt-text\">или</span>\n      <button id=\"togetherjs-end-session\" class=\"togetherjs-destructive\">Закончить сеанс</button>\n    </section>\n  </div>\n\n  <div id=\"togetherjs-feedback-form\" class=\"togetherjs-modal\" style=\"display: none;\">\n    <header> Отзывы и предложения </header>\n    <iframe src=\"https://docs.google.com/a/mozilla.com/forms/d/1lVE7JyRo_tjakN0mLG1Cd9X9vseBX9wci153z9JcNEs/viewform?embedded=true\" width=\"400\" height=\"300\" frameborder=\"0\" marginheight=\"0\" marginwidth=\"0\">Загружаю форму ...</iframe>\n    <!-- <p><button class=\"togetherjs-modal-close\">Close</button></p> -->\n  </div>\n\n  <div style=\"display: none\">\n    <!-- This is when you join a session and the other person has already changed to another URL: -->\n    <div id=\"togetherjs-template-url-change\" class=\"togetherjs-modal\">\n      <header> Следую на новый URL... </header>\n      <section>\n        <div class=\"togetherjs-person\"></div>\n        Следую\n        <span class=\"togetherjs-person-name\"></span>\n        на <a href=\"\" class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </section>\n    </div>\n\n    <!-- This is when someone invites you to their session: -->\n    <div id=\"togetherjs-template-invite\" class=\"togetherjs-chat-item\">\n      <div class=\"togetherjs-person\"></div>\n      <div>\n        <span class=\"togetherjs-person-name\"></span>\n        пригласил <strong class=\"togetherjs-if-forEveryone\">кого-либо</strong>\n        <strong class=\"togetherjs-ifnot-forEveryone\">Вас</strong>\n        на <a href=\"\" data-togetherjs-subattr-href=\"href\" class=\"togetherjs-sub-hrefTitle\" target=\"_blank\"></a>\n      </div>\n    </div>\n\n  </div>\n\n  <!-- The pointer at the side of a window: -->\n  <div id=\"togetherjs-window-pointer-right\" style=\"display: none\"></div>\n  <div id=\"togetherjs-window-pointer-left\" style=\"display: none\"></div>\n\n  <!-- The element that overlaps the background of the page during a modal dialog: -->\n  <div id=\"togetherjs-modal-background\" style=\"display: none\"></div>\n\n  <!-- Some miscellaneous templates -->\n  <div style=\"display: none\">\n\n    <!-- This is the cursor: -->\n    <div id=\"togetherjs-template-cursor\" class=\"togetherjs-cursor togetherjs\">\n      <!-- Note: images/cursor.svg is a copy of this (for editing): -->\n      <!-- crossbrowser svg dropshadow http://demosthenes.info/blog/600/Creating-a-True-CrossBrowser-Drop-Shadow- -->\n      <svg version=\"1.1\" id=\"Layer_1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" x=\"0px\" y=\"0px\"\n      \t width=\"15px\" height=\"22.838px\" viewBox=\"96.344 146.692 15 22.838\" enable-background=\"new 96.344 146.692 15 22.838\"\n      \t xml:space=\"preserve\">\n      <path fill=\"#231F20\" d=\"M98.984,146.692c2.167,1.322,1.624,6.067,3.773,7.298c-0.072-0.488,2.512-0.931,3.097,0\n      \tc0.503,0.337,1.104-0.846,2.653,0.443c0.555,0.593,3.258,2.179,1.001,8.851c-0.446,1.316,2.854,0.135,1.169,2.619\n      \tc-3.748,5.521-9.455,2.787-9.062,1.746c1.06-2.809-6.889-4.885-4.97-9.896c0.834-2.559,2.898,0.653,2.923,0.29\n      \tc-0.434-1.07-2.608-5.541-2.923-6.985C96.587,150.793,95.342,147.033,98.984,146.692z\"/>\n      </svg>\n      <!-- <img class=\"togetherjs-cursor-img\" src=\"http://localhost:8080/togetherjs/images/cursor.svg\"> -->\n      <span class=\"togetherjs-cursor-container\">\n        <span class=\"togetherjs-cursor-name\"></span>\n        <span style=\"display:none\" class=\"togetherjs-cursor-typing\" id=\"togetherjs-cursor-typebox\">\n          <span class=\"togetherjs-typing-ellipse-one\">&#9679;</span><span class=\"togetherjs-typing-ellipse-two\">&#9679;</span><span class=\"togetherjs-typing-ellipse-three\">&#9679;</span>\n        </span>\n        <!-- Displayed when the cursor is below the screen: -->\n        <span class=\"togetherjs-cursor-down\">\n\n        </span>\n        <!-- Displayed when the cursor is above the screen: -->\n        <span class=\"togetherjs-cursor-up\">\n\n        </span>\n      </span>\n    </div>\n\n    <!-- This is the element that goes around focused form elements: -->\n    <div id=\"togetherjs-template-focus\">\n      <div class=\"togetherjs-focus togetherjs-person-bordercolor\"></div>\n    </div>\n\n    <!-- This is a click: -->\n    <div id=\"togetherjs-template-click\" class=\"togetherjs-click togetherjs\">\n    </div>\n  </div>\n</div>\n",
+    walkthrough: "<!--\n    Any elements with .togetherjs-walkthrough-firsttime will only be\n    displayed on during the first-time experience.  Any elements with\n    .togetherjs-walkthrough-not-firsttime will only be displayed when\n    the walkthrough is accessed through the Help menu.\n\n    Note you *cannot* use <section class=\"togetherjs-walkthrough-slide\n    togetherjs-walkthrough-firsttime\">: the number of sections must be the\n    same regardless.\n  -->\n<div id=\"togetherjs-walkthrough\" class=\"togetherjs-modal togetherjs-modal-wide\">\n  <header>Вы используете TOOL_NAME!<button class=\"togetherjs-close\"></button></header>\n\n  <div id=\"togetherjs-walkthrough-previous\"></div>\n  <div id=\"togetherjs-walkthrough-next\"></div>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-intro.png\"></p>\n\t<p>TOOL_NAME - это служба для Вашего сайта, которая помогает Вам сотрудничать с другими в реальном времени на сайте SITE_NAME </p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <div class=\"togetherjs-walkthrough-firsttime\">\n      <div class=\"togetherjs-walkthrough-main-image\">\n        <div class=\"togetherjs-walkthrough-avatar-section\">\n          <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n          <div class=\"togetherjs-avatar-upload-input\"><input type=\"file\" class=\"togetherjs-upload-avatar\"></div>\n        </div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Введите своё имя\">\n        <div class=\"togetherjs-swatch togetherjs-person-bgcolor-self\"></div>\n        <div class=\"togetherjs-save-settings\">\n          <button class=\"togetherjs-avatar-save togetherjs-primary\">\n            <span id=\"togetherjs-avatar-when-unsaved\">\"\"Сохранить\"\"</span>\n            <span id=\"togetherjs-avatar-when-saved\" style=\"display: none\">Сохранено!</span>\n          </button>\n        </div>\n      </div>\n      <p>Задайте свои аватар, имя и пользовательский цвет вверху. При желании изменить их позднее, щёлкните по кнопке Профиль.</p>\n    </div>\n    <div class=\"togetherjs-walkthrough-not-firsttime\">\n      <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-profile.png\"></p>\n      <p>Вы можете изменить свои аватар, имя и пользовательский цвет, используя кнопку Профиль.</p>\n    </div>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-ifnot-creator\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-invite.png\">\n    </p>\n    <p class=\"togetherjs-ifnot-creator\">Вы можете пригласить ещё друзей на Ваш сеанс, послав им ссылку с приглашением на панели TOOL_NAME.</p>\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-if-creator\">\n      <span class=\"togetherjs-walkthrough-sendlink\">\n        Скопируйте и приклейте эту ссылку в IM или в имейл, чтобы пригласить друзей.<br>\n      </span>\n      <input type=\"text\" class=\"togetherjs-share-link\">\n    </p>\n    <p class=\"togetherjs-if-creator\">Пошлите другу ссылку вверху, чтобы он мог присоединиться к Вашему сеансу! Вы также можете найти эту ссылку с приглашением на панели TOOL_NAME.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-participant.png\"></p>\n    <p>Друзья, которые присоединятся к Вашему сеансу TOOL_NAME, появятся здесь. Вы можете щёлкнуть по аватару друга, чтобы увидеть больше информации.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-chat.png\"></p>\n    <p>Когда Ваши друзья присоединятся к Вашему сеансу TOOL_NAME, Вы сможете общаться с ними здесь!</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-rtc.png\"></p>\n    <p>Если Ваш браузер поддерживает аудио-чат, Вы можете запустить его нажатием на иконку микрофона. Узнайте побольше об этой экспериментальной функции <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">здесь</a>.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-logo.png\"></p>\n    <p>Ну вот Вы и готовы использовать TOOL_NAME. Теперь начинайте сотрудничать на сайте SITE_NAME!</p>\n  </section>\n\n  <div style=\"display: none\">\n    <!-- There is one of these created for each slide: -->\n    <span id=\"togetherjs-template-walkthrough-slide-progress\" class=\"togetherjs-walkthrough-slide-progress\">&#9679;</span>\n  </div>\n  <section id=\"togetherjs-walkthrough-progress\">\n  </section>\n\n  <section class=\"togetherjs-buttons\">\n    <button class=\"togetherjs-primary togetherjs-dismiss\">Я готов!</button>\n  </section>\n\n</div><!-- /.togetherjs-modal -->\n",
+    names: "Лысый Лис, Большой Бобёр, Умная Сова, Жирный Жираф, Серый Волк, Толстый Тюлень, Рыба-кит, Кисьян Котяра, Известная Игуана"
+  };
+});
diff --git a/v3/js/togetherjs/togetherjs/templates.js b/v3/js/togetherjs/togetherjs/templates.js
new file mode 100644
index 000000000..b7fb53bc7
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/templates.js
@@ -0,0 +1,43 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// FIXME: maybe it would be better to dynamically assemble the first
+// argument to define() here to include the localized module:
+define(["util", "require"], function (util, require) {
+  var assert = util.assert;
+
+  function clean(t) {
+    // Removes <% /* ... */ %> comments:
+    t = t.replace(/[<][%]\s*\/\*[\S\s\r\n]*\*\/\s*[%][>]/, "");
+    t = util.trim(t);
+    t = t.replace(/http:\/\/localhost:8080/g, TogetherJS.baseUrl);
+    t = t.replace(/TOOL_NAME/g, '<span class="togetherjs-tool-name">TogetherJS</span>');
+    t = t.replace(/SITE_NAME/g, '<strong class="togetherjs-site-name">[site name]</strong>');
+    t = t.replace(/TOOL_SITE_LINK/g, '<a href="https://togetherjs.com/" target="_blank"><span class="togetherjs-tool-name">TogetherJS</span></a>');
+    return t;
+  }
+
+  var lang = TogetherJS.getConfig("lang") || "en-US";
+  var moduleName = "templates-" + lang;
+  var templatesLang;
+  require([moduleName], function (mod) {
+    templatesLang = mod;
+  });
+
+  return function (resourceName) {
+    // Sometimes require([moduleName]) doesn't return even after the
+    // module has been loaded, but this sync version of require() will
+    // pick up the module in that case:
+    if (! templatesLang) {
+      try {
+        templatesLang = require(moduleName);
+      } catch (e) {
+        console.warn("Error requiring module:", e);
+      }
+    }
+    assert(templatesLang, "Templates not yet loaded");
+    return clean(templatesLang[resourceName]);
+  };
+
+});
diff --git a/v3/js/togetherjs/togetherjs/templating.js b/v3/js/togetherjs/togetherjs/templating.js
new file mode 100644
index 000000000..61d4ce864
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/templating.js
@@ -0,0 +1,81 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define(["jquery", "util", "peers", "windowing", "session"], function ($, util, peers, windowing, session) {
+  var assert = util.assert;
+  var templating = util.Module("templating");
+
+  templating.clone = function (templateId) {
+    templateId = "#togetherjs-template-" + templateId;
+    var template = $(templateId);
+    assert(template.length, "No template found with id:", templateId);
+    template = template.clone();
+    template.attr("id", null);
+    // FIXME: if called directly, doesn't emit new-element event:
+    return template;
+  };
+
+  templating.sub = function (templateId, variables) {
+    var template = templating.clone(templateId);
+    variables = variables || {};
+    util.forEachAttr(variables, function (value, attr) {
+      // FIXME: do the substitution... somehow?
+      var subs = template.find(".togetherjs-sub-" + attr).removeClass("togetherjs-sub-" + attr);
+      if (subs.length) {
+        if (typeof value == "string") {
+          subs.text(value);
+        } else if (value instanceof $) {
+          subs.append(value);
+        } else {
+          assert(false, "Unknown variable value type:", attr, "=", value);
+        }
+      }
+      var ifs = template.find(".togetherjs-if-" + attr).removeClass("togetherjs-sub-" + attr);
+      if (! value) {
+        ifs.hide();
+      }
+      ifs = template.find(".togetherjs-ifnot-" + attr).removeClass("togetherjs-ifnot-" + attr);
+      if (value) {
+        ifs.hide();
+      }
+      var attrName = "data-togetherjs-subattr-" + attr;
+      var attrs = template.find("[" + attrName + "]");
+      attrs.each(function (index, element) {
+        assert(typeof value == "string");
+        element = $(element);
+        var subAttribute = element.attr(attrName);
+        element.attr(attrName, null);
+        element.attr(subAttribute, value);
+      });
+    });
+    if (variables.peer) {
+      variables.peer.view.setElement(template);
+    }
+    if (variables.date) {
+      var date = variables.date;
+      if (typeof date == "number") {
+        date = new Date(date);
+      }
+      var ampm = "AM";
+      var hour = date.getHours();
+      if (hour > 12) {
+        hour -= 12;
+        ampm = "PM";
+      }
+      var minute = date.getMinutes();
+      var t = hour + ":";
+      if (minute < 10) {
+        t += "0";
+      }
+      t += minute;
+      template.find(".togetherjs-time").text(t);
+      template.find(".togetherjs-ampm").text(ampm);
+    }
+
+    // FIXME: silly this is on session:
+    session.emit("new-element", template);
+    return template;
+  };
+
+  return templating;
+});
diff --git a/v3/js/togetherjs/togetherjs/togetherjs.css b/v3/js/togetherjs/togetherjs/togetherjs.css
new file mode 100644
index 000000000..ca2cedf13
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/togetherjs.css
@@ -0,0 +1,2728 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this file,
+* You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*Fonts*/
+@font-face {
+  font-family: openSansRegular;
+  src: url('fonts/OpenSans-Regular.ttf');
+}
+@font-face {
+  font-family: openSansLight;
+  src: url('fonts/OpenSans-Light.ttf');
+}
+@font-face {
+  font-family: openSansBold;
+  src: url('fonts/OpenSans-Bold.ttf');
+}
+/* .togetherjs reset */
+/* http://yuilibrary.com/yui/docs/cssreset/ */
+.togetherjs {
+  /*
+YUI 3.10.3 (build 2fb5187)
+Copyright 2013 Yahoo! Inc. All rights reserved.
+Licensed under the BSD License.
+http://yuilibrary.com/license/
+*/
+
+  /*
+	TODO think about hanlding inheritence differently, maybe letting IE6 fail a bit...
+*/
+
+  /* to preserve line-height and selector appearance */
+
+  /*to enable resizing for IE*/
+
+  /*because legend doesn't inherit in IE */
+
+}
+.togetherjs * {
+  -webkit-box-sizing: content-box !important;
+  -moz-box-sizing: content-box !important;
+  box-sizing: content-box !important;
+}
+.togetherjs header {
+  width: auto;
+}
+.togetherjs div,
+.togetherjs dl,
+.togetherjs dt,
+.togetherjs dd,
+.togetherjs ul,
+.togetherjs ol,
+.togetherjs li,
+.togetherjs h1,
+.togetherjs h2,
+.togetherjs h3,
+.togetherjs h4,
+.togetherjs h5,
+.togetherjs h6,
+.togetherjs pre,
+.togetherjs code,
+.togetherjs form,
+.togetherjs fieldset,
+.togetherjs legend,
+.togetherjs input,
+.togetherjs textarea,
+.togetherjs p,
+.togetherjs blockquote,
+.togetherjs th,
+.togetherjs td {
+  margin: 0;
+  padding: 0;
+}
+.togetherjs table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+.togetherjs fieldset,
+.togetherjs img {
+  border: 0;
+}
+.togetherjs address,
+.togetherjs caption,
+.togetherjs cite,
+.togetherjs code,
+.togetherjs dfn,
+.togetherjs em,
+.togetherjs strong,
+.togetherjs th,
+.togetherjs var {
+  font-style: normal;
+  font-weight: normal;
+}
+.togetherjs ol,
+.togetherjs ul {
+  list-style: none;
+}
+.togetherjs caption,
+.togetherjs th {
+  text-align: left;
+}
+.togetherjs h1,
+.togetherjs h2,
+.togetherjs h3,
+.togetherjs h4,
+.togetherjs h5,
+.togetherjs h6 {
+  font-size: 100%;
+  font-weight: normal;
+}
+.togetherjs q:before,
+.togetherjs q:after {
+  content: '';
+}
+.togetherjs abbr,
+.togetherjs acronym {
+  border: 0;
+  font-variant: normal;
+}
+.togetherjs sup {
+  vertical-align: text-top;
+}
+.togetherjs sub {
+  vertical-align: text-bottom;
+}
+.togetherjs input,
+.togetherjs textarea,
+.togetherjs select {
+  font-family: inherit;
+  font-size: inherit;
+  font-weight: inherit;
+}
+.togetherjs input,
+.togetherjs textarea,
+.togetherjs select {
+  *font-size: 100%;
+}
+.togetherjs legend {
+  color: #000;
+}
+.togetherjs {
+  /* General styles */
+
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial;
+  font-size: 14px;
+  line-height: 20px;
+  color: #333333;
+  font-weight: normal;
+}
+.togetherjs a {
+  color: #0095DD;
+  text-decoration: none;
+}
+.togetherjs a:hover {
+  color: #0095DD;
+  text-decoration: underline;
+}
+.togetherjs p {
+  margin: 7px 0 7px 0;
+}
+.togetherjs button,
+.togetherjs img {
+  vertical-align: middle;
+}
+.togetherjs input:focus {
+  outline: none;
+}
+.togetherjs button::-moz-focus-inner,
+.togetherjs input::-moz-focus-inner {
+  padding: 0;
+  border: 0;
+}
+.togetherjs .togetherjs-right {
+  float: right;
+}
+button:disabled {
+  opacity: 0.2;
+}
+button[disabled]:hover {
+  background: #0194DB;
+}
+.togetherjs-default {
+  display: inline-block;
+  border-radius: 4px;
+  text-align: center;
+  height: 40px;
+  /*line-height not consistent across browsers*/
+
+  line-height: 37px;
+  text-decoration: none;
+  min-width: 100px;
+  border: none;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  /*transition: all 0.25s linear 0s;*/
+
+  text-shadow: none;
+  margin: 3px;
+  font-size: 14px;
+  background: #9A9A9A;
+  color: #fff;
+}
+.togetherjs-default.togetherjs-follow {
+  cursor: pointer;
+}
+.togetherjs-default:hover {
+  background: #ADADAD;
+}
+.togetherjs-primary {
+  display: inline-block;
+  border-radius: 4px;
+  text-align: center;
+  height: 40px;
+  /*line-height not consistent across browsers*/
+
+  line-height: 37px;
+  text-decoration: none;
+  min-width: 100px;
+  border: none;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  /*transition: all 0.25s linear 0s;*/
+
+  text-shadow: none;
+  margin: 3px;
+  font-size: 14px;
+  background: #0194DB;
+  color: #fff;
+}
+.togetherjs-primary.togetherjs-follow {
+  cursor: pointer;
+}
+.togetherjs-primary:hover {
+  background: #00ACFF;
+}
+a.togetherjs-primary,
+a.togetherjs-default,
+a.togetherjs-secondary,
+a.togetherjs-primary:link,
+a.togetherjs-default:link,
+a.togetherjs-secondary:link,
+a.togetherjs-primary:active,
+a.togetherjs-default:active,
+a.togetherjs-secondary:active,
+a.togetherjs-primary:visited,
+a.togetherjs-default:visited,
+a.togetherjs-secondary:visited,
+a.togetherjs-primary:hover,
+a.togetherjs-default:hover,
+a.togetherjs-secondary:hover {
+  color: #fff;
+  text-decoration: none;
+  vertical-align: middle;
+}
+#togetherjs-avatar-edit .togetherjs-person-avatar-swatch {
+  margin-left: 22px;
+}
+#togetherjs-avatar-edit .togetherjs-person {
+  float: left;
+  height: 36px;
+  width: 36px;
+  margin: 35px;
+  background-repeat: no-repeat;
+  background-size: 40px 40px;
+  background-position: -2px -1px;
+  border: 2px solid;
+  border-radius: 2px;
+  background-clip: border-box;
+}
+#togetherjs-avatar-edit #togetherjs-avatar-buttons {
+  float: right;
+  width: 172px;
+  padding: 45px 0px;
+}
+input.togetherjs-upload-avatar {
+  line-height: 0px;
+  width: 174px;
+  margin-left: -20px;
+}
+#togetherjs-upload-avatar {
+  float: left;
+}
+#togetherjs-camera-avatar {
+  clear: both;
+}
+#togetherjs-avatar-edit .togetherjs-buttons {
+  clear: both;
+}
+.togetherjs-destructive {
+  display: inline-block;
+  border-radius: 4px;
+  text-align: center;
+  height: 40px;
+  /*line-height not consistent across browsers*/
+
+  line-height: 37px;
+  text-decoration: none;
+  min-width: 100px;
+  border: none;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  /*transition: all 0.25s linear 0s;*/
+
+  text-shadow: none;
+  margin: 3px;
+  font-size: 14px;
+  background: #AC2924;
+  color: #ffffff;
+}
+.togetherjs-destructive:hover {
+  background: #d40606;
+}
+.togetherjs-secondary {
+  display: inline-block;
+  border-radius: 4px;
+  text-align: center;
+  height: 40px;
+  /*line-height not consistent across browsers*/
+
+  line-height: 37px;
+  text-decoration: none;
+  min-width: 100px;
+  border: none;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  /*transition: all 0.25s linear 0s;*/
+
+  text-shadow: none;
+  margin: 3px;
+  font-size: 14px;
+  background: #999999;
+  /* Old browsers */
+
+  background: -moz-linear-gradient(top, #999999 0%, #888888 100%);
+  /* FF3.6+ */
+
+  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #999999), color-stop(100%, #888888));
+  /* Chrome,Safari4+ */
+
+  background: -webkit-linear-gradient(top, #999999 0%, #888888 100%);
+  /* Chrome10+,Safari5.1+ */
+
+  background: -o-linear-gradient(top, #999999 0%, #888888 100%);
+  /* Opera 11.10+ */
+
+  background: -ms-linear-gradient(top, #999999 0%, #888888 100%);
+  /* IE10+ */
+
+  background: linear-gradient(to bottom, #999999 0%, #888888 100%);
+  /* W3C */
+
+  color: #fff;
+}
+.togetherjs-cancel {
+  display: inline-block;
+  background: inherit;
+  border: none;
+  padding: 3px 0px;
+  margin: 0px 0px 0px;
+  min-width: 0;
+  font-size: 14px;
+  color: #333333;
+  font-family: openSansLight, Helvetica;
+  vertical-align: -2px !important;
+}
+.togetherjs-cancel:hover {
+  cursor: pointer;
+  border-bottom: 1px solid #BCBCBC;
+  margin: 0px 0px -1px;
+}
+.togetherjs-alt-text {
+  vertical-align: -2px;
+}
+/*FIX ME something weird is going on here. the avatar has no paddingTop only on Safari*/
+/*button#togetherjs-profile-button.togetherjs-button {
+  padding:10px 0px !important;
+}*/
+/* General dock rules: */
+.togetherjs #togetherjs-buttons .togetherjs-button {
+  background-color: inherit;
+  border: none;
+  padding: 0;
+  margin: 0;
+  position: relative;
+  width: 60px;
+  height: 60px;
+  background-size: 40px 40px;
+  background-repeat: no-repeat;
+  background-position: center;
+  border-top: 1px solid rgba(0, 0, 0, 0.2);
+}
+.togetherjs #togetherjs-buttons .togetherjs-button:hover {
+  background-color: #0F81BF;
+}
+.togetherjs #togetherjs-buttons hr {
+  padding: 0;
+  margin: 0;
+}
+.togetherjs #togetherjs-dock-participants button.togetherjs-active {
+  background-color: #0F81BF !important;
+}
+.togetherjs #togetherjs-buttons #togetherjs-share-button {
+  background-image: url('./images/button-share.png');
+}
+.togetherjs #togetherjs-buttons #togetherjs-share-button:hover {
+  background-image: url('./images/button-share-active.png');
+}
+.togetherjs #togetherjs-buttons #togetherjs-share-button.togetherjs-active {
+  background-image: url('./images/button-share-active.png') !important;
+  background-color: #0F81BF;
+}
+.togetherjs #togetherjs-buttons #togetherjs-audio-button {
+  background-image: url('./images/button-mic.png');
+}
+.togetherjs #togetherjs-buttons #togetherjs-audio-button:hover {
+  background-image: url('./images/button-mic-active.png');
+  /*background-color:#0095dd;*/
+
+  /*cursor: default;*/
+
+}
+.togetherjs #togetherjs-buttons #togetherjs-audio-button.togetherjs-active {
+  background-image: url('./images/button-mic-active.png') !important;
+  background-color: #0F81BF;
+}
+.togetherjs #togetherjs-buttons #togetherjs-chat-button {
+  background-image: url('./images/button-chat.png');
+}
+.togetherjs #togetherjs-buttons #togetherjs-chat-button:hover {
+  background-image: url('./images/button-chat-active.png');
+}
+.togetherjs #togetherjs-buttons #togetherjs-chat-button.togetherjs-active {
+  background-image: url('./images/button-chat-active.png') !important;
+  background-color: #0F81BF;
+}
+.togetherjs #togetherjs-dock-anchor {
+  height: 20px;
+  text-align: center;
+  /* FIXME: disabling dock movement for now, cursor would be misleading: */
+
+  -moz-user-select: none;
+  -webkit-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+  width: 100%;
+  position: relative;
+  left: 0px;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+}
+.togetherjs .togetherjs-subtitle {
+  background: #0195DD;
+  width: 280px;
+  height: 17px;
+  border-bottom: 1px solid #0071A7;
+  color: rgba(255, 255, 255, 0.5);
+  font-size: 12px;
+  padding: 7px 10px;
+  left: -14px;
+  top: -15px;
+  position: relative;
+}
+.togetherjs .togetherjs-subtitle #togetherjs-chat-participants {
+  font-size: 12px;
+  color: rgba(255, 255, 255, 0.5);
+}
+.togetherjs .togetherjs-subtitle #togetherjs-chat-no-participants {
+  font-size: 12px;
+  color: rgba(255, 255, 255, 0.5);
+}
+.togetherjs .togetherjs-subtitle #togetherjs-chat-participant-list {
+  font-size: 12px;
+  color: rgba(255, 255, 255, 0.5);
+}
+.togetherjs #togetherjs-chat-input {
+  width: 264px;
+  height: 20px;
+  overflow-x: hidden;
+  overflow-y: hidden;
+  resize: none;
+  font-size: 14px;
+  padding: 4px 6px 5px;
+  border-radius: 4px;
+  border: 1px solid #cccccc;
+  /*box-shadow: inset 0 2px 2px rgba(0,0,0,0.1);*/
+
+  font-family: openSansLight, Helvetica, sans-serif;
+}
+.togetherjs #togetherjs-chat-input:focus {
+  border: 1px solid #0095DD;
+}
+.togetherjs #togetherjs-chat-input-box {
+  margin: 0;
+  padding: 10px 10px 11px;
+  border-top: 1px solid rgba(0, 0, 0, 0.1);
+  background: #F2F2F2;
+  position: relative;
+  /*box-shadow: 0 -1px 2px rgba(0,0,0,0.1);*/
+
+  height: 31px;
+  width: 280px;
+  margin-left: -7px;
+  border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+}
+.togetherjs .togetherjs-window #togetherjs-chat-messages {
+  width: 300px;
+  position: relative;
+  left: -14px;
+  background: #fff;
+  top: -30px;
+  margin-bottom: -30px !important;
+}
+.togetherjs .togetherjs-chat-item {
+  padding: 0 0 20px 0;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  font-size: 14px;
+  padding: 10px 0px;
+  margin: 0;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
+  color: #333333;
+  min-height: 60px;
+}
+.togetherjs #togetherjs-chat-messages .togetherjs-chat-item a.togetherjs-person-url {
+  width: 105px;
+  white-space: nowrap;
+  vertical-align: top;
+  display: inline-block;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+.togetherjs #togetherjs-chat-messages .togetherjs-person-self {
+  float: left;
+  margin-bottom: 20px;
+  margin-top: 7px;
+}
+.togetherjs #togetherjs-chat-messages .togetherjs-person {
+  float: left;
+  margin-bottom: 20px;
+}
+.togetherjs .togetherjs-person-name-abbrev {
+  color: #333333;
+  font-family: openSansRegular, Helvetica, sans-serif;
+  padding-top: 2px;
+}
+.togetherjs .togetherjs-timestamp {
+  float: right;
+  color: rgba(51, 51, 51, 0.5);
+  font-size: 9px !important;
+  padding: 0 15px;
+}
+.togetherjs .togetherjs-chat-content {
+  white-space: pre-wrap;
+  line-height: 20px;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  margin: 3px 15px 3px 60px;
+}
+.togetherjs #togetherjs-window-pointer-right,
+.togetherjs #togetherjs-window-pointer-left {
+  position: fixed;
+  width: 10px;
+  height: 10px;
+  margin-right: -5px;
+  margin-top: -5px;
+  background: #fff;
+  border-right: 1px solid rgba(0, 0, 0, 0.2);
+  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
+  z-index: 10002;
+  box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.1);
+}
+.togetherjs #togetherjs-window-pointer-right {
+  -moz-transform: rotate(-45deg);
+  -webkit-transform: rotate(-45deg);
+}
+.togetherjs #togetherjs-window-pointer-left {
+  -moz-transform: rotate(135deg);
+  -webkit-transform: rotate(135deg);
+}
+.togetherjs .togetherjs-window {
+  position: fixed;
+  background-color: #ffffff;
+  color: #000000;
+  padding: 0 7px 0 7px;
+  z-index: 10001;
+  width: 286px;
+  border-radius: 4px;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
+}
+.togetherjs .togetherjs-window section {
+  margin: 15px 7px;
+}
+.togetherjs .togetherjs-window > header {
+  font-weight: bold;
+  font-variant: normal;
+  text-align: center;
+  font-family: openSansRegular, Helvetica;
+  color: #fff;
+  margin: 0 -7px 0 -7px;
+  padding: 10px 4px 5px 30px;
+  height: 24px;
+  background: #0095DD;
+  border-radius: 4px 4px 0 0;
+  position: relative;
+  border-bottom: 1px solid #0071A7;
+}
+.togetherjs .togetherjs-window .togetherjs-share-link {
+  width: 256px;
+  font-size: 12px;
+  padding: 6px 6px 4px;
+  border-radius: 4px;
+  border: 1px solid #cccccc;
+  box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.1);
+  font-family: Monaco, sans-serif;
+  margin: 7px 0px;
+}
+.togetherjs .togetherjs-window .togetherjs-share-link:focus {
+  border: 1px solid #0095DD;
+}
+.togetherjs .togetherjs-window header button.togetherjs-close {
+  background-color: inherit;
+  border: none;
+  padding: 0;
+  margin: 0;
+  border-left: 1px solid #0071A7;
+  float: right;
+  font-weight: bold;
+  cursor: pointer;
+  background-image: url('./images/icon-close@2x.png');
+  background-position: center center;
+  background-repeat: no-repeat;
+  background-size: 13px 13px;
+  width: 39px;
+  height: 39px;
+  margin-top: -10px;
+  margin-right: -4px;
+  border-top-right-radius: 4px;
+}
+.togetherjs .togetherjs-window header button.togetherjs-close:hover {
+  background-image: url('./images/icon-close-active.png');
+  background-color: rgba(0, 0, 0, 0.1);
+}
+.togetherjs .togetherjs-window #togetherjs-chat-messages {
+  overflow-y: auto;
+  /*FIXME: I'm just pulling numbers out of thin air here:*/
+
+  /* pgbovine -- make a bit smaller */
+
+  height: 180px;
+  /*
+    height: 260px;
+    */
+
+}
+.togetherjs #togetherjs-feedback-form > header {
+  font-weight: bold;
+  font-variant: normal;
+  text-align: center;
+  font-family: openSansRegular, Helvetica, sans-serif;
+  color: #fff;
+  margin: 0 -1px 0 -1px;
+  padding: 10px 4px 5px 30px;
+  height: 24px;
+  background: #0095DD;
+  border-radius: 4px 4px 0 0;
+  position: relative;
+  border-bottom: 1px solid #0071A7;
+}
+.togetherjs #togetherjs-feedback-form.togetherjs-modal {
+  background-color: #fff;
+  color: #000000;
+  padding: 0 0 5px 0;
+  border-radius: 2px;
+  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
+  border-left: 1px solid #c9c9c9;
+  border-right: 1px solid #c9c9c9;
+  border-bottom: 1px solid #c9c9c9;
+  position: fixed;
+  top: 46%;
+  left: 47%;
+  margin-left: -150px;
+  margin-top: -10em;
+  height: 24em;
+  width: 399px;
+}
+.togetherjs #togetherjs-alpha-intro .togetherjs-small-feedback-txt {
+  font-size: 10px;
+}
+.togetherjs #togetherjs-alpha-intro .togetherjs-modal-close:hover {
+  background: #61921b;
+}
+.togetherjs #togetherjs-alpha-intro {
+  height: 24em;
+}
+.togetherjs #togetherjs-intro .togetherjs-modal-dont-join {
+  /*    background-repeat: repeat-x;
+    border: 0;
+    color: rgb(255, 255, 255);
+    cursor: pointer;
+    display: inline-block;
+    text-transform: none;
+    vertical-align: middle;
+    padding: 10px 0 10px 0;*/
+
+}
+.togetherjs .togetherjs-notification {
+  position: fixed;
+  background-color: #ffffff;
+  color: #000000;
+  padding: 0 7px 0 7px;
+  z-index: 10001;
+  width: 300px;
+  border-radius: 4px;
+  background: rgba(242, 242, 242, 0.9);
+  border: 1px solid #BCBCBC;
+  -moz-box-shadow: 0px 5px 15px 0px rgba(0, 0, 0, 0.4), inset 0px 3px 1px 0px #ffffff;
+  -webkit-box-shadow: 0px 5px 15px 0px rgba(0, 0, 0, 0.4), inset 0px 3px 1px 0px #ffffff;
+  box-shadow: 0px 5px 15px 0px rgba(0, 0, 0, 0.4), inset 0px 3px 1px 0px #ffffff;
+}
+.togetherjs .togetherjs-notification section {
+  margin: 15px 7px;
+}
+.togetherjs .togetherjs-notification > header {
+  font-weight: bold;
+  font-variant: normal;
+  text-align: center;
+  font-family: openSansRegular, Helvetica;
+  color: #fff;
+  margin: 0 -7px 0 -7px;
+  padding: 10px 4px 5px 30px;
+  height: 24px;
+  background: #0095DD;
+  border-radius: 4px 4px 0 0;
+  position: relative;
+  border-bottom: 1px solid #0071A7;
+}
+.togetherjs .togetherjs-notification .togetherjs-share-link {
+  width: 256px;
+  font-size: 12px;
+  padding: 6px 6px 4px;
+  border-radius: 4px;
+  border: 1px solid #cccccc;
+  box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.1);
+  font-family: Monaco, sans-serif;
+  margin: 7px 0px;
+}
+.togetherjs .togetherjs-notification .togetherjs-share-link:focus {
+  border: 1px solid #0095DD;
+}
+.togetherjs .togetherjs-notification header button.togetherjs-close {
+  background-color: inherit;
+  border: none;
+  padding: 0;
+  margin: 0;
+  border-left: 1px solid #0071A7;
+  float: right;
+  font-weight: bold;
+  cursor: pointer;
+  background-image: url('./images/icon-close@2x.png');
+  background-position: center center;
+  background-repeat: no-repeat;
+  background-size: 13px 13px;
+  width: 39px;
+  height: 39px;
+  margin-top: -10px;
+  margin-right: -4px;
+  border-top-right-radius: 4px;
+}
+.togetherjs .togetherjs-notification header button.togetherjs-close:hover {
+  background-image: url('./images/icon-close-active.png');
+  background-color: rgba(0, 0, 0, 0.1);
+}
+.togetherjs .togetherjs-notification #togetherjs-chat-messages {
+  overflow-y: auto;
+  /*FIXME: I'm just pulling numbers out of thin air here:*/
+
+  /* pgbovine -- make a bit smaller */
+
+  height: 180px;
+  /*
+    height: 260px;
+    */
+
+}
+.togetherjs .togetherjs-notification:hover {
+  background: #f2f2f2;
+  cursor: pointer;
+}
+.togetherjs .togetherjs-notification .togetherjs-chat-item {
+  border-bottom: 0px;
+  word-wrap: break-word;
+}
+.togetherjs .togetherjs-notification section#togetherjs-chat-notifier-message {
+  margin: 0px !important;
+}
+.togetherjs .togetherjs-notification .togetherjs-chat-content {
+  font-size: 12px;
+}
+.togetherjs .togetherjs-notification section {
+  font-size: 12px;
+}
+.togetherjs .togetherjs-notification .togetherjs-person-name {
+  font-family: openSansRegular, Helvetica Bold, 'Helvetica Neue', Arial;
+  font-size: 14px;
+}
+.togetherjs .togetherjs-notification button {
+  min-width: 47% !important;
+}
+.togetherjs .togetherjs-notification .togetherjs-person {
+  display: none;
+}
+.togetherjs .togetherjs-notification .togetherjs-timestamp {
+  display: none;
+}
+.togetherjs .togetherjs-notification {
+  border-bottom: 0px;
+}
+.togetherjs .togetherjs-notification img.togetherjs-notification-logo {
+  float: left;
+  margin: 22px 14px 14px 10px;
+  width: 34px;
+  height: 25px;
+}
+.togetherjs .togetherjs-notification img.togetherjs-notification-closebtn {
+  float: right;
+  padding: 14px 7px;
+}
+.togetherjs .togetherjs-notification img.togetherjs-notification-closebtn:hover {
+  opacity: 0.5;
+}
+.togetherjs .togetherjs-notification section.togetherjs-buttons {
+  border-top: 1px solid #E1E1E1;
+}
+.togetherjs .togetherjs-person {
+  height: 36px;
+  width: 36px;
+  margin: 10px;
+  background-repeat: no-repeat;
+  background-size: 40px 40px;
+  background-position: -2px -2px;
+  border: 2px solid;
+  border-radius: 2px;
+  background-clip: border-box;
+}
+.togetherjs .togetherjs-person.togetherjs-person-small {
+  display: inline-block;
+  height: 20px;
+  width: 20px;
+  margin: -1px -18px;
+  background-size: 22px 22px;
+  background-position: -1px -1px;
+}
+.togetherjs .togetherjs-person-small .togetherjs-person-avatar-swatch {
+  border-width: 3px;
+  margin-left: 14px;
+  margin-top: 0px;
+}
+.togetherjs .togetherjs-person-avatar-swatch {
+  /* This is the element that lives inside all .togetherjs-person elements
+       and is used for the triangle. */
+
+  width: 0;
+  height: 0;
+  margin-left: 23px;
+  padding: 0;
+  border-top: 7px solid transparent;
+  border-left: 7px solid transparent;
+  border-right: 7px solid transparent;
+  border-bottom: 7px solid transparent;
+  margin-top: 0px;
+}
+.togetherjs .togetherjs-person-inactive {
+  opacity: 0.5;
+}
+.togetherjs .togetherjs-button .togetherjs-person {
+  margin: 0 0 0 10px;
+}
+@-moz-document url-prefix() {
+  /* firefox only styles */
+  .togetherjs-button .togetherjs-person {
+    margin: 10px 0 0 10px;
+  }
+}
+.togetherjs header .togetherjs-person {
+  float: left;
+}
+.togetherjs .togetherjs-dock-person > .togetherjs-dock-person-tooltip {
+  display: none;
+}
+.togetherjs .togetherjs-dock-person:hover > .togetherjs-dock-person-tooltip {
+  display: block;
+}
+.togetherjs .togetherjs-dock-person.togetherjs-active:hover > .togetherjs-dock-person-tooltip {
+  display: none;
+}
+.togetherjs .togetherjs-dock-person-tooltip {
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial;
+  position: absolute;
+  right: 70px;
+  top: 0px;
+  padding: 8px;
+  font-size: 12px;
+  text-align: left;
+  min-width: 30px;
+}
+.togetherjs .togetherjs-tooltip {
+  background-color: rgba(42, 42, 42, 0.9);
+  color: #fff;
+  border-radius: 4px;
+  line-height: 20px !important;
+}
+.togetherjs .togetherjs-dock-person-tooltip .togetherjs-person-name {
+  font-size: 12px;
+}
+.togetherjs .togetherjs-person-tooltip-arrow-r {
+  position: absolute;
+  left: 46px;
+  width: 0;
+  height: 0;
+  border-top: 4px solid transparent;
+  border-bottom: 4px solid transparent;
+  border-left: 4px solid rgba(0, 0, 0, 0.9);
+  line-height: 20px;
+  opacity: 0.9;
+  top: 20px;
+}
+.togetherjs-triangle-up {
+  position: absolute;
+  top: -15px;
+  width: 13px;
+  left: 50px;
+}
+.togetherjs-triangle-up img {
+  width: 12px;
+  height: 13px;
+}
+.togetherjs-rtc-dialog-btn {
+  text-align: right;
+}
+#togetherjs-rtc-info section.togetherjs-buttons {
+  text-align: right !important;
+}
+#togetherjs-rtc-info label {
+  font-size: 12px !important;
+  float: left !important;
+  padding-top: 13px;
+  padding-left: 30px;
+}
+#togetherjs-rtc-info input {
+  margin-top: 0px !important;
+}
+.togetherjs-chat-url-change {
+  background: #f2f2f2;
+  margin-top: 0px !important;
+}
+.togetherjs-chat-join-item {
+  background: #f2f2f2;
+  margin-top: 0px !important;
+}
+.togetherjs-chat-left-item {
+  background: #f2f2f2;
+  margin-top: 0px !important;
+}
+.togetherjs-inline-text {
+  margin-top: 10px !important;
+}
+.togetherjs-chat-join-item .togetherjs-person {
+  float: left;
+  margin-bottom: 0px !important;
+  margin-top: 0px;
+}
+.togetherjs-chat-left-item .togetherjs-person {
+  float: left;
+  margin-bottom: 0px !important;
+  margin-top: 0px;
+}
+.togetherjs-chat-url-change .togetherjs-person {
+  float: left;
+  margin-bottom: 0px !important;
+  margin-top: 0px;
+}
+.togetherjs-chat-join-item span.togetherjs-person-name {
+  font-family: openSansRegular, Helvetica;
+}
+.togetherjs-chat-left-item span.togetherjs-person-name {
+  font-family: openSansRegular, Helvetica;
+}
+.togetherjs-chat-url-change span.togetherjs-person-name {
+  font-family: openSansRegular, Helvetica;
+}
+.togetherjs-clear {
+  clear: both;
+}
+/* Menu */
+#togetherjs-menu {
+  width: 216px;
+  position: fixed;
+  font-size: 14px;
+  background-color: #fff;
+  z-index: 10003;
+  border: 1px solid #979797;
+  border-radius: 4px;
+}
+#togetherjs-menu hr {
+  margin: 0px;
+  border-top: 0px solid #E1E1E1;
+}
+#togetherjs-menu .togetherjs-menu-hr-avatar {
+  margin-top: 20px;
+  height: 0px;
+  border-bottom: 1px solid #E1E1E1;
+  font-size: 1px;
+}
+#togetherjs-menu .togetherjs-hr {
+  height: 0px;
+  margin: 0px;
+  border-bottom: 1px solid #E1E1E1;
+  font-size: 1px;
+}
+#togetherjs-menu .togetherjs-menu-item {
+  margin: -1px 0px -1px;
+  padding: 12px;
+  line-height: 9px;
+  height: 10px;
+  clear: both;
+  cursor: pointer;
+}
+#togetherjs-menu .togetherjs-menu-item.togetherjs-menu-disabled {
+  cursor: default;
+}
+#togetherjs-menu .togetherjs-menu-item.togetherjs-menu-disabled:hover {
+  background-color: inherit;
+  border-radius: 4px;
+  border-top: 1px solid #979797;
+  padding-top: 11px !important;
+}
+#togetherjs-menu .togetherjs-menu-item img {
+  float: left;
+  height: 20px;
+  width: 20px;
+  margin-right: 10px;
+  margin-top: -5px;
+}
+#togetherjs-menu .togetherjs-menu-item:hover {
+  background-color: rgba(216, 216, 216, 0.5);
+}
+#togetherjs-menu .togetherjs-menu-item .togetherjs-avatar {
+  height: 20px;
+  width: 20px;
+  padding: 0;
+  margin: 0 10px 0 0;
+}
+#togetherjs-menu .togetherjs-menu-item .togetherjs-person-bgcolor-self {
+  display: inline-block;
+  width: 12px;
+  height: 12px;
+  border: 1px solid #999;
+  border-radius: 2px;
+  margin-right: 12px;
+  float: left;
+  margin-top: -2px;
+  margin-left: 4px;
+}
+#togetherjs-menu #togetherjs-menu-help {
+  padding-left: 15px;
+}
+#togetherjs-menu #togetherjs-menu-feedback {
+  padding-left: 15px;
+}
+#togetherjs-menu img#togetherjs-menu-avatar {
+  float: left;
+  padding-top: 8px;
+}
+#togetherjs-menu .togetherjs-person-name-self {
+  padding-top: 8px;
+  line-height: 32px;
+  font-weight: bold;
+}
+#togetherjs-menu .togetherjs-self-name {
+  width: 146px !important;
+  float: right;
+  margin-top: -23px;
+  font-size: 12px;
+  padding: 7px 7px;
+  border-radius: 4px;
+  border: 1px solid #cccccc;
+  box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.1);
+  margin: -2px 0px;
+}
+#togetherjs-menu .togetherjs-self-name:focus {
+  border: 1px solid #0095DD;
+}
+#togetherjs-menu .togetherjs-self-name:focus {
+  border-bottom: 1px solid #0095DD;
+}
+/*Participant windows*/
+#togetherjs-participantlist.togetherjs-window {
+  padding: -1px;
+}
+#togetherjs-participantlist.togetherjs-window section {
+  overflow: scroll;
+  height: 200px;
+  margin: 0px -7px;
+}
+#togetherjs-participantlist section.togetherjs-buttons {
+  height: auto;
+  background: none;
+  text-align: left;
+  margin: auto;
+  padding-top: 0px;
+}
+#togetherjs-participantlist .togetherjs-person.togetherjs-person-small {
+  margin: 0px;
+  width: 30px;
+  height: 30px;
+}
+#togetherjs-participantlist.togetherjs-window section ul li {
+  padding: 10px;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
+}
+#togetherjs-participantlist.togetherjs-window .tj-name {
+  padding-left: 5px;
+}
+#togetherjs-participantlist.togetherjs-window .tj-status {
+  float: right;
+  margin-top: 6px;
+  margin-right: 10px;
+  font-size: 24px;
+  color: green;
+}
+#togetherjs-participantlist.togetherjs-window .tj-urllocation {
+  font-size: 12px;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+#togetherjs-participantlist .togetherjs-follow-question {
+  margin-left: 0px;
+}
+#togetherjs-participantlist.togetherjs-window .tj-follow {
+  font-size: 12px;
+}
+#togetherjs-participantlist.togetherjs-window .tj-btn-sm {
+  height: 30px;
+  line-height: 30px;
+  font-size: 12px;
+  margin: 0px 3px 0px 0px;
+}
+section.togetherjs-participant-window-main {
+  margin: 0px -7px -7px !important;
+}
+.togetherjs-participant-window-row a.togetherjs-person-url {
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  overflow: hidden;
+  width: 179px;
+  display: inline-block;
+}
+.togetherjs p.togetherjs-participant-window-row {
+  border-bottom: 1px solid #E1E1E1 !important;
+  padding: 7px 14px 14px !important;
+}
+.togetherjs-participant-window-row strong {
+  font-weight: 800;
+}
+.togetherjs-follow-question {
+  margin-left: 10px;
+}
+.togetherjs-float-left {
+  float: left;
+}
+.togetherjs-window input[type="radio"],
+.togetherjs-window input[type="checkbox"] {
+  margin: 0 0 0 !important;
+}
+.togetherjs-clear {
+  clear: both;
+  margin: 10px;
+}
+section.togetherjs-buttons {
+  background: #F3F2F2;
+  margin: 0px -7px !important;
+  padding: 7px;
+  border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+  text-align: right;
+}
+section.togetherjs-buttons.togetherjs-buttons-notification-diff-url {
+  margin: 7px -7px 0px !important;
+  padding: 7px 3px 0px;
+  border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+  width: 300px;
+  text-align: right;
+}
+.togetherjs-notification-diff-url {
+  width: 288px !important;
+  margin: 0px 7px !important;
+}
+.togetherjs-different-url button {
+  min-width: 47% !important;
+}
+/*.togetherjs-different-url {
+  text-align:right;
+}*/
+.togetherjs-same-url {
+  padding-left: 7px !important;
+  opacity: .5 !important;
+  padding-top: 7px !important;
+  padding-bottom: 7px !important;
+}
+section.togetherjs-buttons .togetherjs-same-url {
+  text-align: left;
+}
+/* Button set */
+#togetherjs-dock {
+  position: fixed;
+  z-index: 10000;
+  background-color: #0095dd;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
+  /*border:1px solid #000;*/
+
+}
+#togetherjs-dock.togetherjs-dock-right {
+  padding: 0;
+  bottom: 50px;
+  right: 5px;
+  border-radius: 4px;
+  height: 260px;
+  width: 60px;
+}
+#togetherjs-dock.togetherjs-dock-right #togetherjs-dock-anchor-vertical {
+  display: none;
+}
+#togetherjs-dock.togetherjs-dock-right #togetherjs-dock-anchor-horizontal {
+  display: inline;
+}
+#togetherjs-dock.togetherjs-dock-right #togetherjs-dock-anchor-horizontal img {
+  width: 31px;
+  height: 7px;
+  padding: 0px 2px 2px 2px;
+  pointer-events: none;
+}
+#togetherjs-dock.togetherjs-dock-left {
+  padding: 0;
+  bottom: 60px;
+  left: 5px;
+  border-radius: 0 4px 4px 0;
+  height: 214px;
+  width: 60px;
+}
+#togetherjs-dock.togetherjs-dock-left #togetherjs-dock-anchor-vertical {
+  display: none;
+}
+#togetherjs-dock.togetherjs-dock-left #togetherjs-dock-anchor-horizontal {
+  display: inline;
+}
+#togetherjs-dock.togetherjs-dock-left #togetherjs-dock-anchor-horizontal img {
+  width: 6px;
+  height: 6px;
+  padding: 7px 2px 2px 2px;
+}
+#togetherjs-dock.togetherjs-dock-top {
+  padding: 0;
+  top: 40px;
+  left: 50%;
+  margin-left: -130px;
+  border-radius: 4px 4px 0 0;
+  height: 60px;
+  width: 260px;
+}
+#togetherjs-dock.togetherjs-dock-top #togetherjs-buttons,
+#togetherjs-dock.togetherjs-dock-top #togetherjs-dock-anchor {
+  display: inline;
+}
+#togetherjs-dock.togetherjs-dock-top #togetherjs-dock-anchor-vertical {
+  display: inline;
+}
+#togetherjs-dock.togetherjs-dock-top #togetherjs-dock-anchor-horizontal {
+  display: none;
+}
+#togetherjs-dock.togetherjs-dock-top #togetherjs-dock-anchor-vertical img {
+  width: 6px;
+  height: 6px;
+  padding: 2px;
+}
+/* Arrows for pointing */
+.togetherjs-arrow {
+  position: absolute;
+  border: 2px solid #f00;
+  z-index: 10010;
+  padding: 0;
+  margin: 0;
+  -moz-transform-origin: top left;
+  -webkit-transform-origin: top left;
+  -ms-transform-origin: top left;
+  -o-transform-origin: top left;
+  transform-origin: top left;
+}
+.togetherjs-chat-message.togetherjs-arrow-message {
+  border: 2px solid #f00;
+}
+/* Shared cursors */
+.togetherjs-cursor svg {
+  -webkit-filter: drop-shadow(1px 3px 2px rgba(0, 0, 0, 0.3));
+  -webkit-transform: rotate(-10deg);
+}
+.togetherjs-cursor-img {
+  position: relative;
+  top: 0;
+}
+.togetherjs-cursor img {
+  width: 20px;
+  -webkit-filter: drop-shadow(0px 2px 1px rgba(0, 0, 0, 0.2));
+  /*FIX ME, moz filter not working...*/
+
+  -moz-filter: drop-shadow(0px 2px 1px rgba(0, 0, 0, 0.2));
+  filter: drop-shadow(0px 2px 1px rgba(0, 0, 0, 0.2));
+}
+.togetherjs-cursor {
+  position: absolute;
+  z-index: 9999;
+  font-size: 28px;
+  font-weight: bolder;
+  /* This magic CSS rule makes this element basically invisible to clicks/etc:
+  (good on all but IE: http://caniuse.com/pointer-events */
+
+  pointer-events: none;
+  /*FIXME: maybe these should use position: fixed so the cursor
+  stays stuck to the top of the screen until the appropriate time
+  (when .togetherjs-scrolled-above/below is removed)?*/
+
+}
+.togetherjs-cursor:hover {
+  cursor: pointer;
+}
+.togetherjs-cursor.togetherjs-scrolled-above {
+  position: fixed;
+}
+.togetherjs-cursor.togetherjs-scrolled-above svg {
+  -webkit-transition-duration: 0.8s;
+  -webkit-transition-property: -webkit-transform;
+  -webkit-transform: rotate(20deg);
+  transition-duration: 0.8s;
+  transition-property: transform;
+  transform: rotate(20deg);
+}
+.togetherjs-cursor.togetherjs-scrolled-above .togetherjs-cursor-down {
+  display: none;
+}
+.togetherjs-cursor.togetherjs-scrolled-below {
+  position: fixed;
+}
+.togetherjs-cursor.togetherjs-scrolled-below svg {
+  -webkit-transition-duration: 0.8s;
+  -webkit-transition-property: -webkit-transform;
+  -webkit-transform: rotate(-150deg);
+  transition-duration: 0.8s;
+  transition-property: transform;
+  transform: rotate(-150deg);
+}
+.togetherjs-cursor.togetherjs-scrolled-below .togetherjs-cursor-up {
+  display: none;
+}
+.togetherjs-cursor.togetherjs-scrolled-normal svg {
+  -webkit-transition-duration: 0.8s;
+  -webkit-transition-property: -webkit-transform;
+  -webkit-transform: rotate(-10deg);
+  transition-duration: 0.8s;
+  transition-property: transform;
+  transform: rotate(-10deg);
+}
+.togetherjs-cursor.togetherjs-scrolled-normal .togetherjs-cursor-up,
+.togetherjs-cursor.togetherjs-scrolled-normal .togetherjs-cursor-down {
+  display: none;
+}
+.togetherjs-cursor .togetherjs-cursor-container {
+  opacity: 0.9;
+  white-space: nowrap;
+  font-family: openSansLight, Helvetica, 'Helvetica Neue', Arial, sans-serif;
+  font-size: 40%;
+  position: relative;
+  top: 5px;
+  left: 15px;
+  padding: 8px;
+  border-radius: 4px;
+  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
+  border: 1px solid rgba(0, 0, 0, 0.2);
+  -moz-box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.5);
+  -webkit-box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.5);
+  box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.5);
+}
+.togetherjs-click {
+  position: absolute;
+  z-index: 9998;
+  pointer-events: none;
+  width: 10px;
+  height: 10px;
+  margin: -5px 0 0 -5px;
+  border-radius: 5px;
+  border: 3px solid #ff3a29;
+  /*    Note, you must call this like:
+  .transition(~"value, value, value")*/
+
+  transition: width 2s, height 2s, margin 2s, border 2s;
+  -moz-transition: width 2s, height 2s, margin 2s, border 2s;
+  -webkit-transition: width 2s, height 2s, margin 2s, border 2s;
+  -o-transition: width 2s, height 2s, margin 2s, border 2s;
+}
+.togetherjs-click.togetherjs-clicking {
+  width: 40px;
+  height: 40px;
+  margin: -20px 0 0 -20px;
+  border-radius: 20px;
+  border: 3px solid rgba(0, 0, 0, 0);
+}
+#togetherjs-starter .togetherjs-running {
+  background-color: #f00;
+  color: #fff;
+  border-radius: 4px;
+  border: 3px outset #d00;
+  /*FIXME: add gradient*/
+
+}
+/* Modals */
+#togetherjs-modal-background {
+  position: fixed;
+  background-color: #000;
+  opacity: 0.5;
+  width: 100%;
+  height: 100%;
+  top: 0;
+  left: 0;
+  z-index: 10002;
+}
+.togetherjs .togetherjs-modal {
+  background-color: #ffffff;
+  color: #000000;
+  padding: 0 7px 0 7px;
+  z-index: 10001;
+  width: 286px;
+  border-radius: 4px;
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
+  border-radius: 5px !important;
+  position: fixed;
+  z-index: 10003;
+  top: 50%;
+  left: 50%;
+  margin-left: -150px;
+  width: 300px;
+  margin-top: -10em;
+}
+.togetherjs .togetherjs-modal section {
+  margin: 15px 7px;
+}
+.togetherjs .togetherjs-modal > header {
+  font-weight: bold;
+  font-variant: normal;
+  text-align: center;
+  font-family: openSansRegular, Helvetica;
+  color: #fff;
+  margin: 0 -7px 0 -7px;
+  padding: 10px 4px 5px 30px;
+  height: 24px;
+  background: #0095DD;
+  border-radius: 4px 4px 0 0;
+  position: relative;
+  border-bottom: 1px solid #0071A7;
+}
+.togetherjs .togetherjs-modal .togetherjs-share-link {
+  width: 256px;
+  font-size: 12px;
+  padding: 6px 6px 4px;
+  border-radius: 4px;
+  border: 1px solid #cccccc;
+  box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.1);
+  font-family: Monaco, sans-serif;
+  margin: 7px 0px;
+}
+.togetherjs .togetherjs-modal .togetherjs-share-link:focus {
+  border: 1px solid #0095DD;
+}
+.togetherjs .togetherjs-modal header button.togetherjs-close {
+  background-color: inherit;
+  border: none;
+  padding: 0;
+  margin: 0;
+  border-left: 1px solid #0071A7;
+  float: right;
+  font-weight: bold;
+  cursor: pointer;
+  background-image: url('./images/icon-close@2x.png');
+  background-position: center center;
+  background-repeat: no-repeat;
+  background-size: 13px 13px;
+  width: 39px;
+  height: 39px;
+  margin-top: -10px;
+  margin-right: -4px;
+  border-top-right-radius: 4px;
+}
+.togetherjs .togetherjs-modal header button.togetherjs-close:hover {
+  background-image: url('./images/icon-close-active.png');
+  background-color: rgba(0, 0, 0, 0.1);
+}
+.togetherjs .togetherjs-modal #togetherjs-chat-messages {
+  overflow-y: auto;
+  /*FIXME: I'm just pulling numbers out of thin air here:*/
+
+  /* pgbovine -- make a bit smaller */
+
+  height: 180px;
+  /*
+    height: 260px;
+    */
+
+}
+.togetherjs .togetherjs-modal.togetherjs-modal-wide {
+  width: 550px;
+  margin-left: -284px;
+  height: 530px;
+  margin-top: -275px;
+}
+.togetherjs .togetherjs-modal section.togetherjs-buttons {
+  /*position: absolute;*/
+
+  bottom: 0;
+  background: #F2F2F2;
+  width: 294px;
+  padding: 10px;
+  text-align: right;
+  border-bottom-right-radius: 4px;
+  border-bottom-left-radius: 4px;
+  margin-left: -7px;
+  margin-bottom: 0px;
+  border-top: 1px solid #E1E1E1;
+}
+.togetherjs .togetherjs-modal-wide section.togetherjs-buttons {
+  width: 544px;
+  text-align: center !important;
+  position: absolute;
+}
+.togetherjs .togetherjs-walkthrough-slide {
+  padding: 0 30px 0 30px;
+  text-align: center;
+}
+.togetherjs .togetherjs-walkthrough-slide p {
+  margin: 18px auto;
+  width: 400px;
+}
+.togetherjs .togetherjs-walkthrough-slide iframe {
+  border-radius: 4px;
+}
+.togetherjs section.togetherjs-walkthrough-slide .togetherjs-walkthrough-main-image .togetherjs-walkthrough-avatar-section {
+  margin-top: 115px;
+}
+.togetherjs .togetherjs-avatar-preview {
+  float: left;
+  margin-left: 82px;
+}
+.togetherjs .togetherjs-avatar-upload-input {
+  float: right;
+  margin-right: 82px;
+  margin-top: 19px;
+}
+.togetherjs .togetherjs-save-settings {
+  margin-top: 239px;
+}
+.togetherjs section.togetherjs-walkthrough-slide .togetherjs-walkthrough-avatar {
+  width: 80px;
+  height: 80px;
+  position: absolute;
+  left: 44%;
+  top: 30%;
+  border-radius: 4px 4px 4px 4px;
+  border: 2px solid #cccccc;
+  background: none repeat scroll 0% 0% #000000;
+}
+.togetherjs section.togetherjs-walkthrough-slide .togetherjs-walkthrough-avatar:hover {
+  cursor: pointer;
+  border: 2px solid #cccccc;
+}
+.togetherjs section.togetherjs-walkthrough-slide input.togetherjs-self-name {
+  position: absolute;
+  top: 50%;
+  left: 29%;
+  font-size: 14px;
+  padding: 6px 6px 6px;
+  border-radius: 4px 4px 4px 4px;
+  border: 1px solid #cccccc;
+  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.1) inset;
+  font-family: openSansRegular, Helvetica, sans-serif;
+  margin: -20px 0px;
+}
+.togetherjs section.togetherjs-walkthrough-slide .togetherjs-swatch {
+  width: 32px;
+  height: 32px;
+  background: none repeat scroll 0% 0% #000000;
+  position: absolute;
+  top: 46.2%;
+  right: 29%;
+  border-radius: 4px 4px 4px 4px;
+  border: 1px solid #cccccc;
+}
+.togetherjs section.togetherjs-walkthrough-slide .togetherjs-swatch:hover {
+  cursor: pointer;
+  border: 1px solid rgba(204, 204, 204, 0.2);
+}
+.togetherjs section.togetherjs-walkthrough-slide span.togetherjs-walkthrough-sendlink {
+  top: 44%;
+  position: relative;
+}
+.togetherjs section.togetherjs-walkthrough-slide input.togetherjs-share-link {
+  top: 44%;
+  position: relative;
+}
+.togetherjs .togetherjs-walkthrough-main-image {
+  width: 400px;
+  height: 300px;
+  background: rgba(216, 216, 216, 0.1);
+  border-radius: 4px;
+  border: 1px solid rgba(151, 151, 151, 0.1);
+  margin: 0 auto;
+}
+.togetherjs .togetherjs-walkthrough-main-image img {
+  width: 400px;
+  height: 300px;
+}
+.togetherjs #togetherjs-walkthrough input,
+.togetherjs textarea,
+.togetherjs .uneditable-input {
+  width: 177px;
+}
+.togetherjs #togetherjs-walkthrough select,
+.togetherjs input[type="file"] {
+  height: 30px;
+  line-height: 0px;
+}
+.togetherjs #togetherjs-walkthrough-previous {
+  cursor: pointer;
+  width: 19px;
+  height: 36px;
+  background-repeat: no-repeat;
+  background-size: 60% 60%;
+  margin-left: 36px;
+  margin-top: 28%;
+  background-image: url('./images/icn-walkthrough-arrow-l.png');
+  float: left;
+}
+.togetherjs #togetherjs-walkthrough-previous.togetherjs-disabled {
+  cursor: default;
+  opacity: 0.2;
+}
+.togetherjs #togetherjs-walkthrough-previous:hover {
+  background-image: url('./images/icn-walkthrough-arrow-l-hover.png');
+}
+.togetherjs #togetherjs-walkthrough-next {
+  cursor: pointer;
+  width: 19px;
+  height: 36px;
+  background-repeat: no-repeat;
+  background-size: 60% 60%;
+  margin-right: 28px;
+  margin-top: 28%;
+  background-image: url('./images/icn-walkthrough-arrow-r.png');
+  float: right;
+}
+.togetherjs #togetherjs-walkthrough-next.togetherjs-disabled {
+  cursor: default;
+  opacity: 0.2;
+}
+.togetherjs #togetherjs-walkthrough-next:hover {
+  background-image: url('./images/icn-walkthrough-arrow-r-hover.png');
+}
+.togetherjs #togetherjs-walkthrough-progress {
+  width: 537px;
+  position: absolute;
+  bottom: 66px;
+  text-align: center;
+}
+.togetherjs .togetherjs-walkthrough-slide-progress {
+  cursor: pointer;
+  padding: 0 5px 0 5px;
+  color: #D8D8D8;
+  font-size: 20px;
+}
+.togetherjs .togetherjs-walkthrough-slide-progress.togetherjs-active {
+  color: #9C9C9C;
+}
+.togetherjs .togetherjs-walkthrough-slide-progress:hover {
+  color: #9C9C9C;
+}
+/* Animations */
+/* Inspired by https://github.com/daneden/animate.css */
+@-webkit-keyframes togetherjs-pulse {
+  0% {
+    -webkit-transform: scale(1);
+  }
+  50% {
+    -webkit-transform: scale(1.1);
+  }
+  100% {
+    -webkit-transform: scale(1);
+  }
+}
+@-moz-keyframes togetherjs-pulse {
+  0% {
+    -moz-transform: scale(1);
+  }
+  50% {
+    -moz-transform: scale(1.1);
+  }
+  100% {
+    -moz-transform: scale(1);
+  }
+}
+@-o-keyframes togetherjs-pulse {
+  0% {
+    -o-transform: scale(1);
+  }
+  50% {
+    -o-transform: scale(1.1);
+  }
+  100% {
+    -o-transform: scale(1);
+  }
+}
+@keyframes togetherjs-pulse {
+  0% {
+    transform: scale(1);
+  }
+  50% {
+    transform: scale(1.1);
+  }
+  100% {
+    transform: scale(1);
+  }
+}
+.togetherjs-pulse {
+  -webkit-animation-name: togetherjs-pulse;
+  -moz-animation-name: togetherjs-pulse;
+  -o-animation-name: togetherjs-pulse;
+  animation-name: togetherjs-pulse;
+}
+.togetherjs-animated {
+  -webkit-animation-duration: 1s;
+  -moz-animation-duration: 1s;
+  -o-animation-duration: 1s;
+  animation-duration: 1s;
+  -webkit-animation-fill-mode: both;
+  -moz-animation-fill-mode: both;
+  -o-animation-fill-mode: both;
+  animation-fill-mode: both;
+}
+@-webkit-keyframes togetherjs-color-pulse {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: inset 0 0 2px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+@-moz-keyframes togetherjs-color-pulse {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: inset 0 0 2px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+@-o-keyframes togetherjs-color-pulse {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: inset 0 0 2px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+@keyframes togetherjs-color-pulse {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: inset 0 0 2px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+.togetherjs-color-pulse {
+  -webkit-animation-name: togetherjs-color-pulse;
+  -moz-animation-name: togetherjs-color-pulse;
+  -o-animation-name: togetherjs-color-pulse;
+  animation-name: togetherjs-color-pulse;
+}
+@-webkit-keyframes togetherjs-color-alert {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: 0 0 5px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+@-moz-keyframes togetherjs-color-alert {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: 0 0 5px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+@-o-keyframes togetherjs-color-alert {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: 0 0 5px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+@keyframes togetherjs-color-alert {
+  0% {
+    box-shadow: none;
+  }
+  50% {
+    box-shadow: 0 0 5px #0095dd;
+  }
+  100% {
+    box-shadow: none;
+  }
+}
+.togetherjs-color-alert {
+  -webkit-animation-name: togetherjs-color-alert;
+  -moz-animation-name: togetherjs-color-alert;
+  -o-animation-name: togetherjs-color-alert;
+  animation-name: togetherjs-color-alert;
+  animation-iteration-count: infinite;
+  -webkit-animation-iteration-count: infinite;
+  -moz-animation-iteration-count: infinite;
+  -o-animation-iteration-count: infinite;
+}
+#togetherjs-profile-arrow {
+  position: absolute;
+  width: 12px;
+  height: 12px;
+  left: 42px;
+  top: 46px;
+  background: url('./images/icn-gear.png');
+  background-size: 12px 12px;
+  background-repeat: no-repeat;
+}
+#togetherjs-pick-color {
+  width: 100px;
+  height: 76px;
+  margin-left: -35px;
+  position: absolute;
+  margin-top: 25px;
+  background-color: #fff;
+  z-index: 10004;
+  border: 1px solid #979797;
+  border-radius: 4px;
+  padding: 5px;
+}
+#togetherjs-pick-color .togetherjs-swatch {
+  cursor: pointer;
+  display: inline-block;
+  height: 12px;
+  width: 12px;
+  border: 1px solid;
+  border-radius: 1px;
+  margin: 4px;
+}
+#togetherjs-pick-color .togetherjs-swatch.togetherjs-swatch-active {
+  border: 3px solid;
+  border-radius: 3px;
+}
+#togetherjs-pick-color .togetherjs-swatch:hover {
+  border: 2px solid rgba(0, 0, 0, 0.5);
+  height: 10px;
+  width: 10px;
+  border-radius: 3px;
+}
+.togetherjs-focus {
+  position: absolute;
+  pointer-events: none;
+  z-index: 9999;
+  opacity: 0.4;
+  border: 3px solid;
+  margin: -3px;
+}
+.togetherjs-only-mobile {
+  display: none;
+}
+@media screen and (max-device-width: 480px) {
+  {
+    /*TogetherJS dock*/
+  
+    /*TogetherJS walkthrough*/
+  
+  }
+  #togetherjs-dock.togetherjs-dock-right {
+    top: 0px;
+    width: auto;
+    height: 40px !important;
+    right: 0px;
+    margin: 10px;
+    bottom: 0px;
+  }
+  #togetherjs-dock #togetherjs-dock-anchor {
+    width: 40px;
+    height: 40px;
+    float: right;
+    user-select: all;
+    cursor: default;
+    display: inline;
+  }
+  #togetherjs-dock #togetherjs-buttons {
+    display: inline;
+  }
+  #togetherjs-dock .togetherjs-button {
+    float: right;
+    border-right: 1px solid rgba(0, 0, 0, 0.2);
+    border-top: none;
+    width: 40px;
+    height: 40px;
+    background-size: 30px 30px;
+  }
+  #togetherjs-dock #togetherjs-profile-arrow {
+    display: none;
+  }
+  #togetherjs-dock #togetherjs-dock-anchor-horizontal img {
+    width: 24px;
+    height: 24px;
+    padding: 8px;
+  }
+  .togetherjs-only-mobile {
+    display: block;
+    text-align: center;
+    /*  a.togetherjs-share-link {
+      padding: 6px 111px 6px;
+    }*/
+  
+  }
+  .togetherjs-not-mobile {
+    display: none;
+  }
+  .togetherjs .togetherjs-menu-item {
+    cursor: pointer;
+    margin: 0px -14px 0px;
+    padding: 9px;
+    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
+  }
+  .togetherjs #togetherjs-menu-feedback-button,
+  .togetherjs #togetherjs-menu-update-color-button,
+  .togetherjs #togetherjs-menu-help-button {
+    display: none;
+  }
+  .togetherjs .togetherjs-menu-item img {
+    display: none;
+  }
+  .togetherjs .togetherjs-menu-item:first-child {
+    display: none;
+  }
+  .togetherjs .togetherjs-button .togetherjs-person {
+    margin: 0 0 0 5px;
+  }
+  .togetherjs .togetherjs-person {
+    background-size: 30px 30px;
+    height: 26px;
+    width: 26px;
+  }
+  .togetherjs .togetherjs-person-avatar-swatch {
+    margin-left: 12px;
+  }
+  .togetherjs .togetherjs-window {
+    width: 100%;
+    margin-left: 0;
+    height: 82%;
+    margin-top: 0%;
+    z-index: 10003 !important;
+    top: 20%;
+    left: -2px;
+  }
+  .togetherjs .togetherjs-window #togetherjs-chat-messages {
+    width: 105%;
+  }
+  .togetherjs .togetherjs-window .togetherjs-close {
+    display: none;
+  }
+  .togetherjs .togetherjs-window #togetherjs-chat-messages {
+    height: 62%;
+    top: -37px;
+  }
+  .togetherjs .togetherjs-subtitle {
+    width: 98%;
+    margin: 22px 7px;
+  }
+  .togetherjs #togetherjs-chat-input-box {
+    width: 100%;
+    bottom: 0px;
+    position: fixed;
+  }
+  .togetherjs #togetherjs-chat-input {
+    width: 95%;
+  }
+  .togetherjs .togetherjs-timestamp {
+    padding: 8px 45px 0px 10px;
+  }
+  .togetherjs #togetherjs-rtc-not-supported section.togetherjs-buttons {
+    display: none;
+  }
+  .togetherjs #togetherjs-menu-window section.togetherjs-buttons {
+    display: none;
+  }
+  .togetherjs .togetherjs-modal {
+    width: 94%;
+    margin-left: 1%;
+    height: 94%;
+    margin-top: 1%;
+    top: 0;
+    left: 0;
+  }
+  .togetherjs .togetherjs-window > header {
+    margin: -7px;
+    padding: 10px;
+  }
+  #togetherjs-dock-participants {
+    display: none;
+  }
+  #togetherjs-confirm-end section.togetherjs-buttons {
+    position: fixed;
+    bottom: 0;
+    width: 92%;
+  }
+  #togetherjs-edit-name-window section.togetherjs-buttons {
+    position: fixed;
+    bottom: 0;
+    width: 96%;
+  }
+  input.togetherjs-self-name {
+    padding: 10px;
+    width: 92%;
+    margin-top: 10px;
+  }
+  #togetherjs-avatar-edit section.togetherjs-buttons {
+    position: fixed;
+    bottom: 0;
+    width: 92%;
+  }
+  #togetherjs-avatar-edit .togetherjs-person {
+    margin: 30px auto;
+    float: none;
+  }
+  #togetherjs-avatar-edit #togetherjs-avatar-buttons {
+    float: none;
+    margin: 0 auto;
+  }
+  #togetherjs-window-pointer-right,
+  #togetherjs-window-pointer-left {
+    position: fixed;
+    width: 10px;
+    height: 10px;
+    margin-right: -5px;
+    margin-top: -5px;
+    background: #fff;
+    border-right: 1px solid rgba(0, 0, 0, 0.2);
+    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
+    z-index: 10002;
+    box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.1);
+  }
+  #togetherjs-window-pointer-right {
+    -moz-transform: rotate(-45deg);
+    -webkit-transform: rotate(-45deg);
+  }
+  #togetherjs-window-pointer-left {
+    -moz-transform: rotate(135deg);
+    -webkit-transform: rotate(135deg);
+  }
+  .togetherjs .togetherjs-modal section {
+    margin: 0px 7px;
+  }
+  #togetherjs-walkthrough-progress {
+    width: 93%;
+    text-align: center;
+    position: static;
+  }
+  .togetherjs-modal-wide section.togetherjs-buttons {
+    width: 93.9%;
+    text-align: center !important;
+    position: absolute;
+    bottom: -17px;
+  }
+  .togetherjs-walkthrough-slide p {
+    margin: 13px auto;
+    width: 100%;
+    font-size: 11px;
+  }
+  .togetherjs .togetherjs-walkthrough-main-image {
+    width: auto;
+    height: auto;
+    background: rgba(216, 216, 216, 0.1);
+    border-radius: 4px;
+    border: 1px solid rgba(151, 151, 151, 0.1);
+    padding: 10px;
+  }
+  .togetherjs .togetherjs-walkthrough-main-image img {
+    width: 50%;
+    height: auto;
+  }
+  .togetherjs #togetherjs-walkthrough-next {
+    cursor: pointer;
+    width: 19px;
+    height: 36px;
+    background-repeat: no-repeat;
+    background-size: 60% 60%;
+    margin-right: 0px;
+    margin-top: 28%;
+    background-image: url('./images/icn-walkthrough-arrow-r.png');
+    float: right;
+  }
+  .togetherjs #togetherjs-walkthrough-previous {
+    cursor: pointer;
+    width: 19px;
+    height: 36px;
+    background-repeat: no-repeat;
+    background-size: 60% 60%;
+    margin-top: 28%;
+    background-image: url('./images/icn-walkthrough-arrow-l.png');
+    float: left;
+    margin-left: 0px;
+  }
+  .togetherjs .togetherjs-modal .togetherjs-share-link {
+    width: 80%;
+    font-size: 14px;
+    padding: 14px;
+    border-radius: 4px;
+    border: 1px solid 
+    #cccccc;
+    box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.1);
+    font-family: Monaco;
+    margin: 7px 0px;
+  }
+  .togetherjs-walkthrough-sendlink {
+    top: 44%;
+    position: relative;
+    padding: 15px;
+  }
+  .togetherjs section.togetherjs-walkthrough-slide input.togetherjs-self-name {
+    position: absolute;
+    top: 50%;
+    left: 29%;
+    font-size: 14px;
+    padding: 6px 6px 6px;
+    border-radius: 4px 4px 4px 4px;
+    border: 1px solid 
+    #cccccc;
+    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.1) inset;
+    font-family: openSansRegular;
+    margin: -20px 11px;
+    width: 60%;
+  }
+  .togetherjs section.togetherjs-walkthrough-slide .togetherjs-walkthrough-main-image .togetherjs-walkthrough-avatar-section {
+    margin-top: 15px;
+  }
+  .togetherjs .togetherjs-avatar-preview {
+    margin: 0 auto;
+    float: none;
+  }
+  .togetherjs .togetherjs-avatar-upload-input {
+    margin: 10px auto;
+    float: none;
+  }
+  .togetherjs .togetherjs-avatar-upload-input input {
+    width: 60%;
+  }
+  input.togetherjs-upload-avatar {
+    line-height: 0px;
+    width: 174px;
+    margin-left: 0px;
+  }
+  .togetherjs section.togetherjs-walkthrough-slide input.togetherjs-self-name {
+    float: left;
+    font-size: 14px;
+    padding: 6px 6px 6px;
+    border-radius: 4px 4px 4px 4px;
+    border: 1px solid 
+    #cccccc;
+    box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.1) inset;
+    font-family: openSansRegular;
+    width: 66%;
+    position: static;
+    margin: 10px 10px;
+  }
+  .togetherjs section.togetherjs-walkthrough-slide .togetherjs-swatch {
+    width: 32px;
+    height: 32px;
+    background: none repeat scroll 0% 0% 
+    #000000;
+    position: relative;
+    float: right;
+    right: 10px;
+    border-radius: 4px 4px 4px 4px;
+    border: 1px solid #cccccc;
+    top: 10px;
+  }
+  .togetherjs .togetherjs-save-settings {
+    margin-top: 20px;
+    margin-bottom: 0px;
+  }
+}
+@media screen and (max-device-width: 480px) and (min-width: 480px) {
+  {
+    /*  #togetherjs-dock.togetherjs-dock-right {
+      width: 27% !important; 
+    }*/
+  
+  }
+  .togetherjs-mobile-browser input.togetherjs-self-name {
+    width: 95%;
+    margin-top: 10px;
+  }
+  .togetherjs .togetherjs-window {
+    width: 100%;
+    left: -2px !important;
+    top: 50%;
+  }
+  .togetherjs-mobile-browser #togetherjs-edit-name-window section.togetherjs-buttons {
+    width: 99%;
+  }
+  #togetherjs-confirm-end section.togetherjs-buttons {
+    width: 96.6%;
+    position: absolute;
+    bottom: 0;
+  }
+  #togetherjs-edit-name-window section.togetherjs-buttons {
+    width: 99%;
+  }
+  input.togetherjs-self-name {
+    width: 94%;
+    margin-top: 10px;
+  }
+  #togetherjs-avatar-edit section.togetherjs-buttons {
+    width: 95.3%;
+    bottom: 0;
+    background: #F2F2F2;
+    padding: 10px;
+    text-align: right;
+    border-bottom-right-radius: 4px;
+    border-bottom-left-radius: 4px;
+    border-top: 1px solid #E1E1E1;
+    position: absolute;
+  }
+  .togetherjs-modal {
+    width: 74% !important;
+    height: 50% !important;
+    margin: 20% 12% !important;
+  }
+  .togetherjs-mobile-browser .togetherjs .togetherjs-modal {
+    width: 76% !important;
+    margin-left: 1%;
+    height: 94%;
+    margin-top: 1%;
+    top: 0;
+    left: 0;
+    height: 41%;
+    margin: 20% 11%;
+  }
+  .togetherjs-modal-wide section.togetherjs-buttons {
+    width: 97.4% !important;
+  }
+}
+@media screen and (max-device-width: 480px) and (max-width: 480px) {
+  .togetherjs .togetherjs-window {
+    width: 96%;
+    margin-left: 0;
+    height: 82%;
+    margin-top: 0%;
+    z-index: 10003 !important;
+    top: 20%;
+    left: -2px;
+  }
+  .togetherjs .togetherjs-window #togetherjs-chat-messages {
+    width: 105%;
+  }
+  .togetherjs .togetherjs-window .togetherjs-close {
+    display: none;
+  }
+  .togetherjs .togetherjs-window #togetherjs-chat-messages {
+    height: 62%;
+    top: -37px;
+  }
+  #togetherjs-chat-input-box {
+    width: 94% !important;
+    bottom: 0px;
+    position: fixed;
+  }
+  .togetherjs-timestamp {
+    padding: 8px 15px 0px 10px !important;
+  }
+  input[type='text'],
+  input[type='number'],
+  textarea {
+    font-size: 16px !important;
+  }
+}
+/* We set this class on the <body> element when that last media query won't work
+   but we detect in Javascript that the client should be treated as mobile */
+.togetherjs-mobile-browser {
+  /*TogetherJS dock*/
+
+  /*TogetherJS walkthrough*/
+
+}
+.togetherjs-mobile-browser #togetherjs-dock.togetherjs-dock-right {
+  top: 0px;
+  width: auto;
+  height: 40px !important;
+  right: 0px;
+  margin: 10px;
+  bottom: 0px;
+}
+.togetherjs-mobile-browser #togetherjs-dock #togetherjs-dock-anchor {
+  width: 40px;
+  height: 40px;
+  float: right;
+  user-select: all;
+  cursor: default;
+  display: inline;
+}
+.togetherjs-mobile-browser #togetherjs-dock #togetherjs-buttons {
+  display: inline;
+}
+.togetherjs-mobile-browser #togetherjs-dock .togetherjs-button {
+  float: right;
+  border-right: 1px solid rgba(0, 0, 0, 0.2);
+  border-top: none;
+  width: 40px;
+  height: 40px;
+  background-size: 30px 30px;
+}
+.togetherjs-mobile-browser #togetherjs-dock #togetherjs-profile-arrow {
+  display: none;
+}
+.togetherjs-mobile-browser #togetherjs-dock #togetherjs-dock-anchor-horizontal img {
+  width: 24px;
+  height: 24px;
+  padding: 8px;
+}
+.togetherjs-mobile-browser .togetherjs-only-mobile {
+  display: block;
+  text-align: center;
+  /*  a.togetherjs-share-link {
+    padding: 6px 111px 6px;
+  }*/
+
+}
+.togetherjs-mobile-browser .togetherjs-not-mobile {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-menu-item {
+  cursor: pointer;
+  margin: 0px -14px 0px;
+  padding: 9px;
+  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-menu-feedback-button,
+.togetherjs-mobile-browser .togetherjs #togetherjs-menu-update-color-button,
+.togetherjs-mobile-browser .togetherjs #togetherjs-menu-help-button {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-menu-item img {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-menu-item:first-child {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-button .togetherjs-person {
+  margin: 0 0 0 5px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-person {
+  background-size: 30px 30px;
+  height: 26px;
+  width: 26px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-person-avatar-swatch {
+  margin-left: 12px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-window {
+  width: 100%;
+  margin-left: 0;
+  height: 82%;
+  margin-top: 0%;
+  z-index: 10003 !important;
+  top: 20%;
+  left: -2px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-window #togetherjs-chat-messages {
+  width: 105%;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-window .togetherjs-close {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-window #togetherjs-chat-messages {
+  height: 62%;
+  top: -37px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-subtitle {
+  width: 98%;
+  margin: 22px 7px;
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-chat-input-box {
+  width: 100%;
+  bottom: 0px;
+  position: fixed;
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-chat-input {
+  width: 95%;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-timestamp {
+  padding: 8px 45px 0px 10px;
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-rtc-not-supported section.togetherjs-buttons {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-menu-window section.togetherjs-buttons {
+  display: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-modal {
+  width: 94%;
+  margin-left: 1%;
+  height: 94%;
+  margin-top: 1%;
+  top: 0;
+  left: 0;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-window > header {
+  margin: -7px;
+  padding: 10px;
+}
+.togetherjs-mobile-browser #togetherjs-dock-participants {
+  display: none;
+}
+.togetherjs-mobile-browser #togetherjs-confirm-end section.togetherjs-buttons {
+  position: fixed;
+  bottom: 0;
+  width: 92%;
+}
+.togetherjs-mobile-browser #togetherjs-edit-name-window section.togetherjs-buttons {
+  position: fixed;
+  bottom: 0;
+  width: 96%;
+}
+.togetherjs-mobile-browser input.togetherjs-self-name {
+  padding: 10px;
+  width: 92%;
+  margin-top: 10px;
+}
+.togetherjs-mobile-browser #togetherjs-avatar-edit section.togetherjs-buttons {
+  position: fixed;
+  bottom: 0;
+  width: 92%;
+}
+.togetherjs-mobile-browser #togetherjs-avatar-edit .togetherjs-person {
+  margin: 30px auto;
+  float: none;
+}
+.togetherjs-mobile-browser #togetherjs-avatar-edit #togetherjs-avatar-buttons {
+  float: none;
+  margin: 0 auto;
+}
+.togetherjs-mobile-browser #togetherjs-window-pointer-right,
+.togetherjs-mobile-browser #togetherjs-window-pointer-left {
+  position: fixed;
+  width: 10px;
+  height: 10px;
+  margin-right: -5px;
+  margin-top: -5px;
+  background: #fff;
+  border-right: 1px solid rgba(0, 0, 0, 0.2);
+  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
+  z-index: 10002;
+  box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.1);
+}
+.togetherjs-mobile-browser #togetherjs-window-pointer-right {
+  -moz-transform: rotate(-45deg);
+  -webkit-transform: rotate(-45deg);
+}
+.togetherjs-mobile-browser #togetherjs-window-pointer-left {
+  -moz-transform: rotate(135deg);
+  -webkit-transform: rotate(135deg);
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-modal section {
+  margin: 0px 7px;
+}
+.togetherjs-mobile-browser #togetherjs-walkthrough-progress {
+  width: 93%;
+  text-align: center;
+  position: static;
+}
+.togetherjs-mobile-browser .togetherjs-modal-wide section.togetherjs-buttons {
+  width: 93.9%;
+  text-align: center !important;
+  position: absolute;
+  bottom: -17px;
+}
+.togetherjs-mobile-browser .togetherjs-walkthrough-slide p {
+  margin: 13px auto;
+  width: 100%;
+  font-size: 11px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-walkthrough-main-image {
+  width: auto;
+  height: auto;
+  background: rgba(216, 216, 216, 0.1);
+  border-radius: 4px;
+  border: 1px solid rgba(151, 151, 151, 0.1);
+  padding: 10px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-walkthrough-main-image img {
+  width: 50%;
+  height: auto;
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-walkthrough-next {
+  cursor: pointer;
+  width: 19px;
+  height: 36px;
+  background-repeat: no-repeat;
+  background-size: 60% 60%;
+  margin-right: 0px;
+  margin-top: 28%;
+  background-image: url('./images/icn-walkthrough-arrow-r.png');
+  float: right;
+}
+.togetherjs-mobile-browser .togetherjs #togetherjs-walkthrough-previous {
+  cursor: pointer;
+  width: 19px;
+  height: 36px;
+  background-repeat: no-repeat;
+  background-size: 60% 60%;
+  margin-top: 28%;
+  background-image: url('./images/icn-walkthrough-arrow-l.png');
+  float: left;
+  margin-left: 0px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-modal .togetherjs-share-link {
+  width: 80%;
+  font-size: 14px;
+  padding: 14px;
+  border-radius: 4px;
+  border: 1px solid 
+  #cccccc;
+  box-shadow: inset 0 2px 2px rgba(0, 0, 0, 0.1);
+  font-family: Monaco;
+  margin: 7px 0px;
+}
+.togetherjs-mobile-browser .togetherjs-walkthrough-sendlink {
+  top: 44%;
+  position: relative;
+  padding: 15px;
+}
+.togetherjs-mobile-browser .togetherjs section.togetherjs-walkthrough-slide input.togetherjs-self-name {
+  position: absolute;
+  top: 50%;
+  left: 29%;
+  font-size: 14px;
+  padding: 6px 6px 6px;
+  border-radius: 4px 4px 4px 4px;
+  border: 1px solid 
+  #cccccc;
+  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.1) inset;
+  font-family: openSansRegular;
+  margin: -20px 11px;
+  width: 60%;
+}
+.togetherjs-mobile-browser .togetherjs section.togetherjs-walkthrough-slide .togetherjs-walkthrough-main-image .togetherjs-walkthrough-avatar-section {
+  margin-top: 15px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-avatar-preview {
+  margin: 0 auto;
+  float: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-avatar-upload-input {
+  margin: 10px auto;
+  float: none;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-avatar-upload-input input {
+  width: 60%;
+}
+.togetherjs-mobile-browser input.togetherjs-upload-avatar {
+  line-height: 0px;
+  width: 174px;
+  margin-left: 0px;
+}
+.togetherjs-mobile-browser .togetherjs section.togetherjs-walkthrough-slide input.togetherjs-self-name {
+  float: left;
+  font-size: 14px;
+  padding: 6px 6px 6px;
+  border-radius: 4px 4px 4px 4px;
+  border: 1px solid 
+  #cccccc;
+  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.1) inset;
+  font-family: openSansRegular;
+  width: 66%;
+  position: static;
+  margin: 10px 10px;
+}
+.togetherjs-mobile-browser .togetherjs section.togetherjs-walkthrough-slide .togetherjs-swatch {
+  width: 32px;
+  height: 32px;
+  background: none repeat scroll 0% 0% 
+  #000000;
+  position: relative;
+  float: right;
+  right: 10px;
+  border-radius: 4px 4px 4px 4px;
+  border: 1px solid #cccccc;
+  top: 10px;
+}
+.togetherjs-mobile-browser .togetherjs .togetherjs-save-settings {
+  margin-top: 20px;
+  margin-bottom: 0px;
+}
+@media (min-width: 480px) {
+  .togetherjs-mobile-browser {
+    /*  #togetherjs-dock.togetherjs-dock-right {
+      width: 27% !important; 
+    }*/
+  
+  }
+  .togetherjs-mobile-browser .togetherjs-mobile-browser input.togetherjs-self-name {
+    width: 95%;
+    margin-top: 10px;
+  }
+  .togetherjs-mobile-browser .togetherjs .togetherjs-window {
+    width: 100%;
+    left: -2px !important;
+    top: 50%;
+  }
+  .togetherjs-mobile-browser .togetherjs-mobile-browser #togetherjs-edit-name-window section.togetherjs-buttons {
+    width: 99%;
+  }
+  .togetherjs-mobile-browser #togetherjs-confirm-end section.togetherjs-buttons {
+    width: 96.6%;
+    position: absolute;
+    bottom: 0;
+  }
+  .togetherjs-mobile-browser #togetherjs-edit-name-window section.togetherjs-buttons {
+    width: 99%;
+  }
+  .togetherjs-mobile-browser input.togetherjs-self-name {
+    width: 94%;
+    margin-top: 10px;
+  }
+  .togetherjs-mobile-browser #togetherjs-avatar-edit section.togetherjs-buttons {
+    width: 95.3%;
+    bottom: 0;
+    background: #F2F2F2;
+    padding: 10px;
+    text-align: right;
+    border-bottom-right-radius: 4px;
+    border-bottom-left-radius: 4px;
+    border-top: 1px solid #E1E1E1;
+    position: absolute;
+  }
+  .togetherjs-mobile-browser .togetherjs-modal {
+    width: 74% !important;
+    height: 50% !important;
+    margin: 20% 12% !important;
+  }
+  .togetherjs-mobile-browser .togetherjs-mobile-browser .togetherjs .togetherjs-modal {
+    width: 76% !important;
+    margin-left: 1%;
+    height: 94%;
+    margin-top: 1%;
+    top: 0;
+    left: 0;
+    height: 41%;
+    margin: 20% 11%;
+  }
+  .togetherjs-mobile-browser .togetherjs-modal-wide section.togetherjs-buttons {
+    width: 97.4% !important;
+  }
+}
+@media (max-width: 480px) {
+  .togetherjs-mobile-browser .togetherjs .togetherjs-window {
+    width: 96%;
+    margin-left: 0;
+    height: 82%;
+    margin-top: 0%;
+    z-index: 10003 !important;
+    top: 20%;
+    left: -2px;
+  }
+  .togetherjs-mobile-browser .togetherjs .togetherjs-window #togetherjs-chat-messages {
+    width: 105%;
+  }
+  .togetherjs-mobile-browser .togetherjs .togetherjs-window .togetherjs-close {
+    display: none;
+  }
+  .togetherjs-mobile-browser .togetherjs .togetherjs-window #togetherjs-chat-messages {
+    height: 62%;
+    top: -37px;
+  }
+  .togetherjs-mobile-browser #togetherjs-chat-input-box {
+    width: 94% !important;
+    bottom: 0px;
+    position: fixed;
+  }
+  .togetherjs-mobile-browser .togetherjs-timestamp {
+    padding: 8px 15px 0px 10px !important;
+  }
+  .togetherjs-mobile-browser input[type='text'],
+  .togetherjs-mobile-browser input[type='number'],
+  .togetherjs-mobile-browser textarea {
+    font-size: 16px !important;
+  }
+}
diff --git a/v3/js/togetherjs/togetherjs/togetherjsPackage.js b/v3/js/togetherjs/togetherjs/togetherjsPackage.js
new file mode 100644
index 000000000..8f3563587
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/togetherjsPackage.js
@@ -0,0 +1,10435 @@
+(function() {/**
+ * almond 0.2.5 Copyright (c) 2011-2012, The Dojo Foundation All Rights Reserved.
+ * Available via the MIT or new BSD license.
+ * see: http://github.com/jrburke/almond for details
+ */
+//Going sloppy to avoid 'use strict' string cost, but strict practices should
+//be followed.
+/*jslint sloppy: true */
+/*global setTimeout: false */
+
+var requirejs, require, define;
+(function (undef) {
+    var main, req, makeMap, handlers,
+        defined = {},
+        waiting = {},
+        config = {},
+        defining = {},
+        hasOwn = Object.prototype.hasOwnProperty,
+        aps = [].slice;
+
+    function hasProp(obj, prop) {
+        return hasOwn.call(obj, prop);
+    }
+
+    /**
+     * Given a relative module name, like ./something, normalize it to
+     * a real name that can be mapped to a path.
+     * @param {String} name the relative name
+     * @param {String} baseName a real name that the name arg is relative
+     * to.
+     * @returns {String} normalized name
+     */
+    function normalize(name, baseName) {
+        var nameParts, nameSegment, mapValue, foundMap,
+            foundI, foundStarMap, starI, i, j, part,
+            baseParts = baseName && baseName.split("/"),
+            map = config.map,
+            starMap = (map && map['*']) || {};
+
+        //Adjust any relative paths.
+        if (name && name.charAt(0) === ".") {
+            //If have a base name, try to normalize against it,
+            //otherwise, assume it is a top-level require that will
+            //be relative to baseUrl in the end.
+            if (baseName) {
+                //Convert baseName to array, and lop off the last part,
+                //so that . matches that "directory" and not name of the baseName's
+                //module. For instance, baseName of "one/two/three", maps to
+                //"one/two/three.js", but we want the directory, "one/two" for
+                //this normalization.
+                baseParts = baseParts.slice(0, baseParts.length - 1);
+
+                name = baseParts.concat(name.split("/"));
+
+                //start trimDots
+                for (i = 0; i < name.length; i += 1) {
+                    part = name[i];
+                    if (part === ".") {
+                        name.splice(i, 1);
+                        i -= 1;
+                    } else if (part === "..") {
+                        if (i === 1 && (name[2] === '..' || name[0] === '..')) {
+                            //End of the line. Keep at least one non-dot
+                            //path segment at the front so it can be mapped
+                            //correctly to disk. Otherwise, there is likely
+                            //no path mapping for a path starting with '..'.
+                            //This can still fail, but catches the most reasonable
+                            //uses of ..
+                            break;
+                        } else if (i > 0) {
+                            name.splice(i - 1, 2);
+                            i -= 2;
+                        }
+                    }
+                }
+                //end trimDots
+
+                name = name.join("/");
+            } else if (name.indexOf('./') === 0) {
+                // No baseName, so this is ID is resolved relative
+                // to baseUrl, pull off the leading dot.
+                name = name.substring(2);
+            }
+        }
+
+        //Apply map config if available.
+        if ((baseParts || starMap) && map) {
+            nameParts = name.split('/');
+
+            for (i = nameParts.length; i > 0; i -= 1) {
+                nameSegment = nameParts.slice(0, i).join("/");
+
+                if (baseParts) {
+                    //Find the longest baseName segment match in the config.
+                    //So, do joins on the biggest to smallest lengths of baseParts.
+                    for (j = baseParts.length; j > 0; j -= 1) {
+                        mapValue = map[baseParts.slice(0, j).join('/')];
+
+                        //baseName segment has  config, find if it has one for
+                        //this name.
+                        if (mapValue) {
+                            mapValue = mapValue[nameSegment];
+                            if (mapValue) {
+                                //Match, update name to the new value.
+                                foundMap = mapValue;
+                                foundI = i;
+                                break;
+                            }
+                        }
+                    }
+                }
+
+                if (foundMap) {
+                    break;
+                }
+
+                //Check for a star map match, but just hold on to it,
+                //if there is a shorter segment match later in a matching
+                //config, then favor over this star map.
+                if (!foundStarMap && starMap && starMap[nameSegment]) {
+                    foundStarMap = starMap[nameSegment];
+                    starI = i;
+                }
+            }
+
+            if (!foundMap && foundStarMap) {
+                foundMap = foundStarMap;
+                foundI = starI;
+            }
+
+            if (foundMap) {
+                nameParts.splice(0, foundI, foundMap);
+                name = nameParts.join('/');
+            }
+        }
+
+        return name;
+    }
+
+    function makeRequire(relName, forceSync) {
+        return function () {
+            //A version of a require function that passes a moduleName
+            //value for items that may need to
+            //look up paths relative to the moduleName
+            return req.apply(undef, aps.call(arguments, 0).concat([relName, forceSync]));
+        };
+    }
+
+    function makeNormalize(relName) {
+        return function (name) {
+            return normalize(name, relName);
+        };
+    }
+
+    function makeLoad(depName) {
+        return function (value) {
+            defined[depName] = value;
+        };
+    }
+
+    function callDep(name) {
+        if (hasProp(waiting, name)) {
+            var args = waiting[name];
+            delete waiting[name];
+            defining[name] = true;
+            main.apply(undef, args);
+        }
+
+        if (!hasProp(defined, name) && !hasProp(defining, name)) {
+            throw new Error('No ' + name);
+        }
+        return defined[name];
+    }
+
+    //Turns a plugin!resource to [plugin, resource]
+    //with the plugin being undefined if the name
+    //did not have a plugin prefix.
+    function splitPrefix(name) {
+        var prefix,
+            index = name ? name.indexOf('!') : -1;
+        if (index > -1) {
+            prefix = name.substring(0, index);
+            name = name.substring(index + 1, name.length);
+        }
+        return [prefix, name];
+    }
+
+    /**
+     * Makes a name map, normalizing the name, and using a plugin
+     * for normalization if necessary. Grabs a ref to plugin
+     * too, as an optimization.
+     */
+    makeMap = function (name, relName) {
+        var plugin,
+            parts = splitPrefix(name),
+            prefix = parts[0];
+
+        name = parts[1];
+
+        if (prefix) {
+            prefix = normalize(prefix, relName);
+            plugin = callDep(prefix);
+        }
+
+        //Normalize according
+        if (prefix) {
+            if (plugin && plugin.normalize) {
+                name = plugin.normalize(name, makeNormalize(relName));
+            } else {
+                name = normalize(name, relName);
+            }
+        } else {
+            name = normalize(name, relName);
+            parts = splitPrefix(name);
+            prefix = parts[0];
+            name = parts[1];
+            if (prefix) {
+                plugin = callDep(prefix);
+            }
+        }
+
+        //Using ridiculous property names for space reasons
+        return {
+            f: prefix ? prefix + '!' + name : name, //fullName
+            n: name,
+            pr: prefix,
+            p: plugin
+        };
+    };
+
+    function makeConfig(name) {
+        return function () {
+            return (config && config.config && config.config[name]) || {};
+        };
+    }
+
+    handlers = {
+        require: function (name) {
+            return makeRequire(name);
+        },
+        exports: function (name) {
+            var e = defined[name];
+            if (typeof e !== 'undefined') {
+                return e;
+            } else {
+                return (defined[name] = {});
+            }
+        },
+        module: function (name) {
+            return {
+                id: name,
+                uri: '',
+                exports: defined[name],
+                config: makeConfig(name)
+            };
+        }
+    };
+
+    main = function (name, deps, callback, relName) {
+        var cjsModule, depName, ret, map, i,
+            args = [],
+            usingExports;
+
+        //Use name if no relName
+        relName = relName || name;
+
+        //Call the callback to define the module, if necessary.
+        if (typeof callback === 'function') {
+
+            //Pull out the defined dependencies and pass the ordered
+            //values to the callback.
+            //Default to [require, exports, module] if no deps
+            deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
+            for (i = 0; i < deps.length; i += 1) {
+                map = makeMap(deps[i], relName);
+                depName = map.f;
+
+                //Fast path CommonJS standard dependencies.
+                if (depName === "require") {
+                    args[i] = handlers.require(name);
+                } else if (depName === "exports") {
+                    //CommonJS module spec 1.1
+                    args[i] = handlers.exports(name);
+                    usingExports = true;
+                } else if (depName === "module") {
+                    //CommonJS module spec 1.1
+                    cjsModule = args[i] = handlers.module(name);
+                } else if (hasProp(defined, depName) ||
+                           hasProp(waiting, depName) ||
+                           hasProp(defining, depName)) {
+                    args[i] = callDep(depName);
+                } else if (map.p) {
+                    map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
+                    args[i] = defined[depName];
+                } else {
+                    throw new Error(name + ' missing ' + depName);
+                }
+            }
+
+            ret = callback.apply(defined[name], args);
+
+            if (name) {
+                //If setting exports via "module" is in play,
+                //favor that over return value and exports. After that,
+                //favor a non-undefined return value over exports use.
+                if (cjsModule && cjsModule.exports !== undef &&
+                        cjsModule.exports !== defined[name]) {
+                    defined[name] = cjsModule.exports;
+                } else if (ret !== undef || !usingExports) {
+                    //Use the return value from the function.
+                    defined[name] = ret;
+                }
+            }
+        } else if (name) {
+            //May just be an object definition for the module. Only
+            //worry about defining if have a module name.
+            defined[name] = callback;
+        }
+    };
+
+    requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
+        if (typeof deps === "string") {
+            if (handlers[deps]) {
+                //callback in this case is really relName
+                return handlers[deps](callback);
+            }
+            //Just return the module wanted. In this scenario, the
+            //deps arg is the module name, and second arg (if passed)
+            //is just the relName.
+            //Normalize module name, if it contains . or ..
+            return callDep(makeMap(deps, callback).f);
+        } else if (!deps.splice) {
+            //deps is a config object, not an array.
+            config = deps;
+            if (callback.splice) {
+                //callback is an array, which means it is a dependency list.
+                //Adjust args if there are dependencies
+                deps = callback;
+                callback = relName;
+                relName = null;
+            } else {
+                deps = undef;
+            }
+        }
+
+        //Support require(['a'])
+        callback = callback || function () {};
+
+        //If relName is a function, it is an errback handler,
+        //so remove it.
+        if (typeof relName === 'function') {
+            relName = forceSync;
+            forceSync = alt;
+        }
+
+        //Simulate async callback;
+        if (forceSync) {
+            main(undef, deps, callback, relName);
+        } else {
+            //Using a non-zero value because of concern for what old browsers
+            //do, and latest browsers "upgrade" to 4 if lower value is used:
+            //http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout:
+            //If want a value immediately, use require('id') instead -- something
+            //that works in almond on the global level, but not guaranteed and
+            //unlikely to work in other AMD implementations.
+            setTimeout(function () {
+                main(undef, deps, callback, relName);
+            }, 4);
+        }
+
+        return req;
+    };
+
+    /**
+     * Just drops the config on the floor, but returns req in case
+     * the config return value is used.
+     */
+    req.config = function (cfg) {
+        config = cfg;
+        if (config.deps) {
+            req(config.deps, config.callback);
+        }
+        return req;
+    };
+
+    define = function (name, deps, callback) {
+
+        //This module may not have dependencies
+        if (!deps.splice) {
+            //deps is not an array, so probably means
+            //an object literal or factory function for
+            //the value. Adjust args.
+            callback = deps;
+            deps = [];
+        }
+
+        if (!hasProp(defined, name) && !hasProp(waiting, name)) {
+            waiting[name] = [name, deps, callback];
+        }
+    };
+
+    define.amd = {
+        jQuery: true
+    };
+}());
+
+define("libs/almond", function(){});
+
+/*! jQuery v1.8.3 jquery.com | jquery.org/license */
+(function (){
+(function(e,t){function _(e){var t=M[e]={};return v.each(e.split(y),function(e,n){t[n]=!0}),t}function H(e,n,r){if(r===t&&e.nodeType===1){var i="data-"+n.replace(P,"-$1").toLowerCase();r=e.getAttribute(i);if(typeof r=="string"){try{r=r==="true"?!0:r==="false"?!1:r==="null"?null:+r+""===r?+r:D.test(r)?v.parseJSON(r):r}catch(s){}v.data(e,n,r)}else r=t}return r}function B(e){var t;for(t in e){if(t==="data"&&v.isEmptyObject(e[t]))continue;if(t!=="toJSON")return!1}return!0}function et(){return!1}function tt(){return!0}function ut(e){return!e||!e.parentNode||e.parentNode.nodeType===11}function at(e,t){do e=e[t];while(e&&e.nodeType!==1);return e}function ft(e,t,n){t=t||0;if(v.isFunction(t))return v.grep(e,function(e,r){var i=!!t.call(e,r,e);return i===n});if(t.nodeType)return v.grep(e,function(e,r){return e===t===n});if(typeof t=="string"){var r=v.grep(e,function(e){return e.nodeType===1});if(it.test(t))return v.filter(t,r,!n);t=v.filter(t,r)}return v.grep(e,function(e,r){return v.inArray(e,t)>=0===n})}function lt(e){var t=ct.split("|"),n=e.createDocumentFragment();if(n.createElement)while(t.length)n.createElement(t.pop());return n}function Lt(e,t){return e.getElementsByTagName(t)[0]||e.appendChild(e.ownerDocument.createElement(t))}function At(e,t){if(t.nodeType!==1||!v.hasData(e))return;var n,r,i,s=v._data(e),o=v._data(t,s),u=s.events;if(u){delete o.handle,o.events={};for(n in u)for(r=0,i=u[n].length;r<i;r++)v.event.add(t,n,u[n][r])}o.data&&(o.data=v.extend({},o.data))}function Ot(e,t){var n;if(t.nodeType!==1)return;t.clearAttributes&&t.clearAttributes(),t.mergeAttributes&&t.mergeAttributes(e),n=t.nodeName.toLowerCase(),n==="object"?(t.parentNode&&(t.outerHTML=e.outerHTML),v.support.html5Clone&&e.innerHTML&&!v.trim(t.innerHTML)&&(t.innerHTML=e.innerHTML)):n==="input"&&Et.test(e.type)?(t.defaultChecked=t.checked=e.checked,t.value!==e.value&&(t.value=e.value)):n==="option"?t.selected=e.defaultSelected:n==="input"||n==="textarea"?t.defaultValue=e.defaultValue:n==="script"&&t.text!==e.text&&(t.text=e.text),t.removeAttribute(v.expando)}function Mt(e){return typeof e.getElementsByTagName!="undefined"?e.getElementsByTagName("*"):typeof e.querySelectorAll!="undefined"?e.querySelectorAll("*"):[]}function _t(e){Et.test(e.type)&&(e.defaultChecked=e.checked)}function Qt(e,t){if(t in e)return t;var n=t.charAt(0).toUpperCase()+t.slice(1),r=t,i=Jt.length;while(i--){t=Jt[i]+n;if(t in e)return t}return r}function Gt(e,t){return e=t||e,v.css(e,"display")==="none"||!v.contains(e.ownerDocument,e)}function Yt(e,t){var n,r,i=[],s=0,o=e.length;for(;s<o;s++){n=e[s];if(!n.style)continue;i[s]=v._data(n,"olddisplay"),t?(!i[s]&&n.style.display==="none"&&(n.style.display=""),n.style.display===""&&Gt(n)&&(i[s]=v._data(n,"olddisplay",nn(n.nodeName)))):(r=Dt(n,"display"),!i[s]&&r!=="none"&&v._data(n,"olddisplay",r))}for(s=0;s<o;s++){n=e[s];if(!n.style)continue;if(!t||n.style.display==="none"||n.style.display==="")n.style.display=t?i[s]||"":"none"}return e}function Zt(e,t,n){var r=Rt.exec(t);return r?Math.max(0,r[1]-(n||0))+(r[2]||"px"):t}function en(e,t,n,r){var i=n===(r?"border":"content")?4:t==="width"?1:0,s=0;for(;i<4;i+=2)n==="margin"&&(s+=v.css(e,n+$t[i],!0)),r?(n==="content"&&(s-=parseFloat(Dt(e,"padding"+$t[i]))||0),n!=="margin"&&(s-=parseFloat(Dt(e,"border"+$t[i]+"Width"))||0)):(s+=parseFloat(Dt(e,"padding"+$t[i]))||0,n!=="padding"&&(s+=parseFloat(Dt(e,"border"+$t[i]+"Width"))||0));return s}function tn(e,t,n){var r=t==="width"?e.offsetWidth:e.offsetHeight,i=!0,s=v.support.boxSizing&&v.css(e,"boxSizing")==="border-box";if(r<=0||r==null){r=Dt(e,t);if(r<0||r==null)r=e.style[t];if(Ut.test(r))return r;i=s&&(v.support.boxSizingReliable||r===e.style[t]),r=parseFloat(r)||0}return r+en(e,t,n||(s?"border":"content"),i)+"px"}function nn(e){if(Wt[e])return Wt[e];var t=v("<"+e+">").appendTo(i.body),n=t.css("display");t.remove();if(n==="none"||n===""){Pt=i.body.appendChild(Pt||v.extend(i.createElement("iframe"),{frameBorder:0,width:0,height:0}));if(!Ht||!Pt.createElement)Ht=(Pt.contentWindow||Pt.contentDocument).document,Ht.write("<!doctype html><html><body>"),Ht.close();t=Ht.body.appendChild(Ht.createElement(e)),n=Dt(t,"display"),i.body.removeChild(Pt)}return Wt[e]=n,n}function fn(e,t,n,r){var i;if(v.isArray(t))v.each(t,function(t,i){n||sn.test(e)?r(e,i):fn(e+"["+(typeof i=="object"?t:"")+"]",i,n,r)});else if(!n&&v.type(t)==="object")for(i in t)fn(e+"["+i+"]",t[i],n,r);else r(e,t)}function Cn(e){return function(t,n){typeof t!="string"&&(n=t,t="*");var r,i,s,o=t.toLowerCase().split(y),u=0,a=o.length;if(v.isFunction(n))for(;u<a;u++)r=o[u],s=/^\+/.test(r),s&&(r=r.substr(1)||"*"),i=e[r]=e[r]||[],i[s?"unshift":"push"](n)}}function kn(e,n,r,i,s,o){s=s||n.dataTypes[0],o=o||{},o[s]=!0;var u,a=e[s],f=0,l=a?a.length:0,c=e===Sn;for(;f<l&&(c||!u);f++)u=a[f](n,r,i),typeof u=="string"&&(!c||o[u]?u=t:(n.dataTypes.unshift(u),u=kn(e,n,r,i,u,o)));return(c||!u)&&!o["*"]&&(u=kn(e,n,r,i,"*",o)),u}function Ln(e,n){var r,i,s=v.ajaxSettings.flatOptions||{};for(r in n)n[r]!==t&&((s[r]?e:i||(i={}))[r]=n[r]);i&&v.extend(!0,e,i)}function An(e,n,r){var i,s,o,u,a=e.contents,f=e.dataTypes,l=e.responseFields;for(s in l)s in r&&(n[l[s]]=r[s]);while(f[0]==="*")f.shift(),i===t&&(i=e.mimeType||n.getResponseHeader("content-type"));if(i)for(s in a)if(a[s]&&a[s].test(i)){f.unshift(s);break}if(f[0]in r)o=f[0];else{for(s in r){if(!f[0]||e.converters[s+" "+f[0]]){o=s;break}u||(u=s)}o=o||u}if(o)return o!==f[0]&&f.unshift(o),r[o]}function On(e,t){var n,r,i,s,o=e.dataTypes.slice(),u=o[0],a={},f=0;e.dataFilter&&(t=e.dataFilter(t,e.dataType));if(o[1])for(n in e.converters)a[n.toLowerCase()]=e.converters[n];for(;i=o[++f];)if(i!=="*"){if(u!=="*"&&u!==i){n=a[u+" "+i]||a["* "+i];if(!n)for(r in a){s=r.split(" ");if(s[1]===i){n=a[u+" "+s[0]]||a["* "+s[0]];if(n){n===!0?n=a[r]:a[r]!==!0&&(i=s[0],o.splice(f--,0,i));break}}}if(n!==!0)if(n&&e["throws"])t=n(t);else try{t=n(t)}catch(l){return{state:"parsererror",error:n?l:"No conversion from "+u+" to "+i}}}u=i}return{state:"success",data:t}}function Fn(){try{return new e.XMLHttpRequest}catch(t){}}function In(){try{return new e.ActiveXObject("Microsoft.XMLHTTP")}catch(t){}}function $n(){return setTimeout(function(){qn=t},0),qn=v.now()}function Jn(e,t){v.each(t,function(t,n){var r=(Vn[t]||[]).concat(Vn["*"]),i=0,s=r.length;for(;i<s;i++)if(r[i].call(e,t,n))return})}function Kn(e,t,n){var r,i=0,s=0,o=Xn.length,u=v.Deferred().always(function(){delete a.elem}),a=function(){var t=qn||$n(),n=Math.max(0,f.startTime+f.duration-t),r=n/f.duration||0,i=1-r,s=0,o=f.tweens.length;for(;s<o;s++)f.tweens[s].run(i);return u.notifyWith(e,[f,i,n]),i<1&&o?n:(u.resolveWith(e,[f]),!1)},f=u.promise({elem:e,props:v.extend({},t),opts:v.extend(!0,{specialEasing:{}},n),originalProperties:t,originalOptions:n,startTime:qn||$n(),duration:n.duration,tweens:[],createTween:function(t,n,r){var i=v.Tween(e,f.opts,t,n,f.opts.specialEasing[t]||f.opts.easing);return f.tweens.push(i),i},stop:function(t){var n=0,r=t?f.tweens.length:0;for(;n<r;n++)f.tweens[n].run(1);return t?u.resolveWith(e,[f,t]):u.rejectWith(e,[f,t]),this}}),l=f.props;Qn(l,f.opts.specialEasing);for(;i<o;i++){r=Xn[i].call(f,e,l,f.opts);if(r)return r}return Jn(f,l),v.isFunction(f.opts.start)&&f.opts.start.call(e,f),v.fx.timer(v.extend(a,{anim:f,queue:f.opts.queue,elem:e})),f.progress(f.opts.progress).done(f.opts.done,f.opts.complete).fail(f.opts.fail).always(f.opts.always)}function Qn(e,t){var n,r,i,s,o;for(n in e){r=v.camelCase(n),i=t[r],s=e[n],v.isArray(s)&&(i=s[1],s=e[n]=s[0]),n!==r&&(e[r]=s,delete e[n]),o=v.cssHooks[r];if(o&&"expand"in o){s=o.expand(s),delete e[r];for(n in s)n in e||(e[n]=s[n],t[n]=i)}else t[r]=i}}function Gn(e,t,n){var r,i,s,o,u,a,f,l,c,h=this,p=e.style,d={},m=[],g=e.nodeType&&Gt(e);n.queue||(l=v._queueHooks(e,"fx"),l.unqueued==null&&(l.unqueued=0,c=l.empty.fire,l.empty.fire=function(){l.unqueued||c()}),l.unqueued++,h.always(function(){h.always(function(){l.unqueued--,v.queue(e,"fx").length||l.empty.fire()})})),e.nodeType===1&&("height"in t||"width"in t)&&(n.overflow=[p.overflow,p.overflowX,p.overflowY],v.css(e,"display")==="inline"&&v.css(e,"float")==="none"&&(!v.support.inlineBlockNeedsLayout||nn(e.nodeName)==="inline"?p.display="inline-block":p.zoom=1)),n.overflow&&(p.overflow="hidden",v.support.shrinkWrapBlocks||h.done(function(){p.overflow=n.overflow[0],p.overflowX=n.overflow[1],p.overflowY=n.overflow[2]}));for(r in t){s=t[r];if(Un.exec(s)){delete t[r],a=a||s==="toggle";if(s===(g?"hide":"show"))continue;m.push(r)}}o=m.length;if(o){u=v._data(e,"fxshow")||v._data(e,"fxshow",{}),"hidden"in u&&(g=u.hidden),a&&(u.hidden=!g),g?v(e).show():h.done(function(){v(e).hide()}),h.done(function(){var t;v.removeData(e,"fxshow",!0);for(t in d)v.style(e,t,d[t])});for(r=0;r<o;r++)i=m[r],f=h.createTween(i,g?u[i]:0),d[i]=u[i]||v.style(e,i),i in u||(u[i]=f.start,g&&(f.end=f.start,f.start=i==="width"||i==="height"?1:0))}}function Yn(e,t,n,r,i){return new Yn.prototype.init(e,t,n,r,i)}function Zn(e,t){var n,r={height:e},i=0;t=t?1:0;for(;i<4;i+=2-t)n=$t[i],r["margin"+n]=r["padding"+n]=e;return t&&(r.opacity=r.width=e),r}function tr(e){return v.isWindow(e)?e:e.nodeType===9?e.defaultView||e.parentWindow:!1}var n,r,i=e.document,s=e.location,o=e.navigator,u=e.jQuery,a=e.$,f=Array.prototype.push,l=Array.prototype.slice,c=Array.prototype.indexOf,h=Object.prototype.toString,p=Object.prototype.hasOwnProperty,d=String.prototype.trim,v=function(e,t){return new v.fn.init(e,t,n)},m=/[\-+]?(?:\d*\.|)\d+(?:[eE][\-+]?\d+|)/.source,g=/\S/,y=/\s+/,b=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,w=/^(?:[^#<]*(<[\w\W]+>)[^>]*$|#([\w\-]*)$)/,E=/^<(\w+)\s*\/?>(?:<\/\1>|)$/,S=/^[\],:{}\s]*$/,x=/(?:^|:|,)(?:\s*\[)+/g,T=/\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g,N=/"[^"\\\r\n]*"|true|false|null|-?(?:\d\d*\.|)\d+(?:[eE][\-+]?\d+|)/g,C=/^-ms-/,k=/-([\da-z])/gi,L=function(e,t){return(t+"").toUpperCase()},A=function(){i.addEventListener?(i.removeEventListener("DOMContentLoaded",A,!1),v.ready()):i.readyState==="complete"&&(i.detachEvent("onreadystatechange",A),v.ready())},O={};v.fn=v.prototype={constructor:v,init:function(e,n,r){var s,o,u,a;if(!e)return this;if(e.nodeType)return this.context=this[0]=e,this.length=1,this;if(typeof e=="string"){e.charAt(0)==="<"&&e.charAt(e.length-1)===">"&&e.length>=3?s=[null,e,null]:s=w.exec(e);if(s&&(s[1]||!n)){if(s[1])return n=n instanceof v?n[0]:n,a=n&&n.nodeType?n.ownerDocument||n:i,e=v.parseHTML(s[1],a,!0),E.test(s[1])&&v.isPlainObject(n)&&this.attr.call(e,n,!0),v.merge(this,e);o=i.getElementById(s[2]);if(o&&o.parentNode){if(o.id!==s[2])return r.find(e);this.length=1,this[0]=o}return this.context=i,this.selector=e,this}return!n||n.jquery?(n||r).find(e):this.constructor(n).find(e)}return v.isFunction(e)?r.ready(e):(e.selector!==t&&(this.selector=e.selector,this.context=e.context),v.makeArray(e,this))},selector:"",jquery:"1.8.3",length:0,size:function(){return this.length},toArray:function(){return l.call(this)},get:function(e){return e==null?this.toArray():e<0?this[this.length+e]:this[e]},pushStack:function(e,t,n){var r=v.merge(this.constructor(),e);return r.prevObject=this,r.context=this.context,t==="find"?r.selector=this.selector+(this.selector?" ":"")+n:t&&(r.selector=this.selector+"."+t+"("+n+")"),r},each:function(e,t){return v.each(this,e,t)},ready:function(e){return v.ready.promise().done(e),this},eq:function(e){return e=+e,e===-1?this.slice(e):this.slice(e,e+1)},first:function(){return this.eq(0)},last:function(){return this.eq(-1)},slice:function(){return this.pushStack(l.apply(this,arguments),"slice",l.call(arguments).join(","))},map:function(e){return this.pushStack(v.map(this,function(t,n){return e.call(t,n,t)}))},end:function(){return this.prevObject||this.constructor(null)},push:f,sort:[].sort,splice:[].splice},v.fn.init.prototype=v.fn,v.extend=v.fn.extend=function(){var e,n,r,i,s,o,u=arguments[0]||{},a=1,f=arguments.length,l=!1;typeof u=="boolean"&&(l=u,u=arguments[1]||{},a=2),typeof u!="object"&&!v.isFunction(u)&&(u={}),f===a&&(u=this,--a);for(;a<f;a++)if((e=arguments[a])!=null)for(n in e){r=u[n],i=e[n];if(u===i)continue;l&&i&&(v.isPlainObject(i)||(s=v.isArray(i)))?(s?(s=!1,o=r&&v.isArray(r)?r:[]):o=r&&v.isPlainObject(r)?r:{},u[n]=v.extend(l,o,i)):i!==t&&(u[n]=i)}return u},v.extend({noConflict:function(t){return e.$===v&&(e.$=a),t&&e.jQuery===v&&(e.jQuery=u),v},isReady:!1,readyWait:1,holdReady:function(e){e?v.readyWait++:v.ready(!0)},ready:function(e){if(e===!0?--v.readyWait:v.isReady)return;if(!i.body)return setTimeout(v.ready,1);v.isReady=!0;if(e!==!0&&--v.readyWait>0)return;r.resolveWith(i,[v]),v.fn.trigger&&v(i).trigger("ready").off("ready")},isFunction:function(e){return v.type(e)==="function"},isArray:Array.isArray||function(e){return v.type(e)==="array"},isWindow:function(e){return e!=null&&e==e.window},isNumeric:function(e){return!isNaN(parseFloat(e))&&isFinite(e)},type:function(e){return e==null?String(e):O[h.call(e)]||"object"},isPlainObject:function(e){if(!e||v.type(e)!=="object"||e.nodeType||v.isWindow(e))return!1;try{if(e.constructor&&!p.call(e,"constructor")&&!p.call(e.constructor.prototype,"isPrototypeOf"))return!1}catch(n){return!1}var r;for(r in e);return r===t||p.call(e,r)},isEmptyObject:function(e){var t;for(t in e)return!1;return!0},error:function(e){throw new Error(e)},parseHTML:function(e,t,n){var r;return!e||typeof e!="string"?null:(typeof t=="boolean"&&(n=t,t=0),t=t||i,(r=E.exec(e))?[t.createElement(r[1])]:(r=v.buildFragment([e],t,n?null:[]),v.merge([],(r.cacheable?v.clone(r.fragment):r.fragment).childNodes)))},parseJSON:function(t){if(!t||typeof t!="string")return null;t=v.trim(t);if(e.JSON&&e.JSON.parse)return e.JSON.parse(t);if(S.test(t.replace(T,"@").replace(N,"]").replace(x,"")))return(new Function("return "+t))();v.error("Invalid JSON: "+t)},parseXML:function(n){var r,i;if(!n||typeof n!="string")return null;try{e.DOMParser?(i=new DOMParser,r=i.parseFromString(n,"text/xml")):(r=new ActiveXObject("Microsoft.XMLDOM"),r.async="false",r.loadXML(n))}catch(s){r=t}return(!r||!r.documentElement||r.getElementsByTagName("parsererror").length)&&v.error("Invalid XML: "+n),r},noop:function(){},globalEval:function(t){t&&g.test(t)&&(e.execScript||function(t){e.eval.call(e,t)})(t)},camelCase:function(e){return e.replace(C,"ms-").replace(k,L)},nodeName:function(e,t){return e.nodeName&&e.nodeName.toLowerCase()===t.toLowerCase()},each:function(e,n,r){var i,s=0,o=e.length,u=o===t||v.isFunction(e);if(r){if(u){for(i in e)if(n.apply(e[i],r)===!1)break}else for(;s<o;)if(n.apply(e[s++],r)===!1)break}else if(u){for(i in e)if(n.call(e[i],i,e[i])===!1)break}else for(;s<o;)if(n.call(e[s],s,e[s++])===!1)break;return e},trim:d&&!d.call("\ufeff\u00a0")?function(e){return e==null?"":d.call(e)}:function(e){return e==null?"":(e+"").replace(b,"")},makeArray:function(e,t){var n,r=t||[];return e!=null&&(n=v.type(e),e.length==null||n==="string"||n==="function"||n==="regexp"||v.isWindow(e)?f.call(r,e):v.merge(r,e)),r},inArray:function(e,t,n){var r;if(t){if(c)return c.call(t,e,n);r=t.length,n=n?n<0?Math.max(0,r+n):n:0;for(;n<r;n++)if(n in t&&t[n]===e)return n}return-1},merge:function(e,n){var r=n.length,i=e.length,s=0;if(typeof r=="number")for(;s<r;s++)e[i++]=n[s];else while(n[s]!==t)e[i++]=n[s++];return e.length=i,e},grep:function(e,t,n){var r,i=[],s=0,o=e.length;n=!!n;for(;s<o;s++)r=!!t(e[s],s),n!==r&&i.push(e[s]);return i},map:function(e,n,r){var i,s,o=[],u=0,a=e.length,f=e instanceof v||a!==t&&typeof a=="number"&&(a>0&&e[0]&&e[a-1]||a===0||v.isArray(e));if(f)for(;u<a;u++)i=n(e[u],u,r),i!=null&&(o[o.length]=i);else for(s in e)i=n(e[s],s,r),i!=null&&(o[o.length]=i);return o.concat.apply([],o)},guid:1,proxy:function(e,n){var r,i,s;return typeof n=="string"&&(r=e[n],n=e,e=r),v.isFunction(e)?(i=l.call(arguments,2),s=function(){return e.apply(n,i.concat(l.call(arguments)))},s.guid=e.guid=e.guid||v.guid++,s):t},access:function(e,n,r,i,s,o,u){var a,f=r==null,l=0,c=e.length;if(r&&typeof r=="object"){for(l in r)v.access(e,n,l,r[l],1,o,i);s=1}else if(i!==t){a=u===t&&v.isFunction(i),f&&(a?(a=n,n=function(e,t,n){return a.call(v(e),n)}):(n.call(e,i),n=null));if(n)for(;l<c;l++)n(e[l],r,a?i.call(e[l],l,n(e[l],r)):i,u);s=1}return s?e:f?n.call(e):c?n(e[0],r):o},now:function(){return(new Date).getTime()}}),v.ready.promise=function(t){if(!r){r=v.Deferred();if(i.readyState==="complete")setTimeout(v.ready,1);else if(i.addEventListener)i.addEventListener("DOMContentLoaded",A,!1),e.addEventListener("load",v.ready,!1);else{i.attachEvent("onreadystatechange",A),e.attachEvent("onload",v.ready);var n=!1;try{n=e.frameElement==null&&i.documentElement}catch(s){}n&&n.doScroll&&function o(){if(!v.isReady){try{n.doScroll("left")}catch(e){return setTimeout(o,50)}v.ready()}}()}}return r.promise(t)},v.each("Boolean Number String Function Array Date RegExp Object".split(" "),function(e,t){O["[object "+t+"]"]=t.toLowerCase()}),n=v(i);var M={};v.Callbacks=function(e){e=typeof e=="string"?M[e]||_(e):v.extend({},e);var n,r,i,s,o,u,a=[],f=!e.once&&[],l=function(t){n=e.memory&&t,r=!0,u=s||0,s=0,o=a.length,i=!0;for(;a&&u<o;u++)if(a[u].apply(t[0],t[1])===!1&&e.stopOnFalse){n=!1;break}i=!1,a&&(f?f.length&&l(f.shift()):n?a=[]:c.disable())},c={add:function(){if(a){var t=a.length;(function r(t){v.each(t,function(t,n){var i=v.type(n);i==="function"?(!e.unique||!c.has(n))&&a.push(n):n&&n.length&&i!=="string"&&r(n)})})(arguments),i?o=a.length:n&&(s=t,l(n))}return this},remove:function(){return a&&v.each(arguments,function(e,t){var n;while((n=v.inArray(t,a,n))>-1)a.splice(n,1),i&&(n<=o&&o--,n<=u&&u--)}),this},has:function(e){return v.inArray(e,a)>-1},empty:function(){return a=[],this},disable:function(){return a=f=n=t,this},disabled:function(){return!a},lock:function(){return f=t,n||c.disable(),this},locked:function(){return!f},fireWith:function(e,t){return t=t||[],t=[e,t.slice?t.slice():t],a&&(!r||f)&&(i?f.push(t):l(t)),this},fire:function(){return c.fireWith(this,arguments),this},fired:function(){return!!r}};return c},v.extend({Deferred:function(e){var t=[["resolve","done",v.Callbacks("once memory"),"resolved"],["reject","fail",v.Callbacks("once memory"),"rejected"],["notify","progress",v.Callbacks("memory")]],n="pending",r={state:function(){return n},always:function(){return i.done(arguments).fail(arguments),this},then:function(){var e=arguments;return v.Deferred(function(n){v.each(t,function(t,r){var s=r[0],o=e[t];i[r[1]](v.isFunction(o)?function(){var e=o.apply(this,arguments);e&&v.isFunction(e.promise)?e.promise().done(n.resolve).fail(n.reject).progress(n.notify):n[s+"With"](this===i?n:this,[e])}:n[s])}),e=null}).promise()},promise:function(e){return e!=null?v.extend(e,r):r}},i={};return r.pipe=r.then,v.each(t,function(e,s){var o=s[2],u=s[3];r[s[1]]=o.add,u&&o.add(function(){n=u},t[e^1][2].disable,t[2][2].lock),i[s[0]]=o.fire,i[s[0]+"With"]=o.fireWith}),r.promise(i),e&&e.call(i,i),i},when:function(e){var t=0,n=l.call(arguments),r=n.length,i=r!==1||e&&v.isFunction(e.promise)?r:0,s=i===1?e:v.Deferred(),o=function(e,t,n){return function(r){t[e]=this,n[e]=arguments.length>1?l.call(arguments):r,n===u?s.notifyWith(t,n):--i||s.resolveWith(t,n)}},u,a,f;if(r>1){u=new Array(r),a=new Array(r),f=new Array(r);for(;t<r;t++)n[t]&&v.isFunction(n[t].promise)?n[t].promise().done(o(t,f,n)).fail(s.reject).progress(o(t,a,u)):--i}return i||s.resolveWith(f,n),s.promise()}}),v.support=function(){var t,n,r,s,o,u,a,f,l,c,h,p=i.createElement("div");p.setAttribute("className","t"),p.innerHTML="  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>",n=p.getElementsByTagName("*"),r=p.getElementsByTagName("a")[0];if(!n||!r||!n.length)return{};s=i.createElement("select"),o=s.appendChild(i.createElement("option")),u=p.getElementsByTagName("input")[0],r.style.cssText="top:1px;float:left;opacity:.5",t={leadingWhitespace:p.firstChild.nodeType===3,tbody:!p.getElementsByTagName("tbody").length,htmlSerialize:!!p.getElementsByTagName("link").length,style:/top/.test(r.getAttribute("style")),hrefNormalized:r.getAttribute("href")==="/a",opacity:/^0.5/.test(r.style.opacity),cssFloat:!!r.style.cssFloat,checkOn:u.value==="on",optSelected:o.selected,getSetAttribute:p.className!=="t",enctype:!!i.createElement("form").enctype,html5Clone:i.createElement("nav").cloneNode(!0).outerHTML!=="<:nav></:nav>",boxModel:i.compatMode==="CSS1Compat",submitBubbles:!0,changeBubbles:!0,focusinBubbles:!1,deleteExpando:!0,noCloneEvent:!0,inlineBlockNeedsLayout:!1,shrinkWrapBlocks:!1,reliableMarginRight:!0,boxSizingReliable:!0,pixelPosition:!1},u.checked=!0,t.noCloneChecked=u.cloneNode(!0).checked,s.disabled=!0,t.optDisabled=!o.disabled;try{delete p.test}catch(d){t.deleteExpando=!1}!p.addEventListener&&p.attachEvent&&p.fireEvent&&(p.attachEvent("onclick",h=function(){t.noCloneEvent=!1}),p.cloneNode(!0).fireEvent("onclick"),p.detachEvent("onclick",h)),u=i.createElement("input"),u.value="t",u.setAttribute("type","radio"),t.radioValue=u.value==="t",u.setAttribute("checked","checked"),u.setAttribute("name","t"),p.appendChild(u),a=i.createDocumentFragment(),a.appendChild(p.lastChild),t.checkClone=a.cloneNode(!0).cloneNode(!0).lastChild.checked,t.appendChecked=u.checked,a.removeChild(u),a.appendChild(p);if(p.attachEvent)for(l in{submit:!0,change:!0,focusin:!0})f="on"+l,c=f in p,c||(p.setAttribute(f,"return;"),c=typeof p[f]=="function"),t[l+"Bubbles"]=c;return v(function(){var n,r,s,o,u="padding:0;margin:0;border:0;display:block;overflow:hidden;",a=i.getElementsByTagName("body")[0];if(!a)return;n=i.createElement("div"),n.style.cssText="visibility:hidden;border:0;width:0;height:0;position:static;top:0;margin-top:1px",a.insertBefore(n,a.firstChild),r=i.createElement("div"),n.appendChild(r),r.innerHTML="<table><tr><td></td><td>t</td></tr></table>",s=r.getElementsByTagName("td"),s[0].style.cssText="padding:0;margin:0;border:0;display:none",c=s[0].offsetHeight===0,s[0].style.display="",s[1].style.display="none",t.reliableHiddenOffsets=c&&s[0].offsetHeight===0,r.innerHTML="",r.style.cssText="box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-sizing:border-box;padding:1px;border:1px;display:block;width:4px;margin-top:1%;position:absolute;top:1%;",t.boxSizing=r.offsetWidth===4,t.doesNotIncludeMarginInBodyOffset=a.offsetTop!==1,e.getComputedStyle&&(t.pixelPosition=(e.getComputedStyle(r,null)||{}).top!=="1%",t.boxSizingReliable=(e.getComputedStyle(r,null)||{width:"4px"}).width==="4px",o=i.createElement("div"),o.style.cssText=r.style.cssText=u,o.style.marginRight=o.style.width="0",r.style.width="1px",r.appendChild(o),t.reliableMarginRight=!parseFloat((e.getComputedStyle(o,null)||{}).marginRight)),typeof r.style.zoom!="undefined"&&(r.innerHTML="",r.style.cssText=u+"width:1px;padding:1px;display:inline;zoom:1",t.inlineBlockNeedsLayout=r.offsetWidth===3,r.style.display="block",r.style.overflow="visible",r.innerHTML="<div></div>",r.firstChild.style.width="5px",t.shrinkWrapBlocks=r.offsetWidth!==3,n.style.zoom=1),a.removeChild(n),n=r=s=o=null}),a.removeChild(p),n=r=s=o=u=a=p=null,t}();var D=/(?:\{[\s\S]*\}|\[[\s\S]*\])$/,P=/([A-Z])/g;v.extend({cache:{},deletedIds:[],uuid:0,expando:"jQuery"+(v.fn.jquery+Math.random()).replace(/\D/g,""),noData:{embed:!0,object:"clsid:D27CDB6E-AE6D-11cf-96B8-444553540000",applet:!0},hasData:function(e){return e=e.nodeType?v.cache[e[v.expando]]:e[v.expando],!!e&&!B(e)},data:function(e,n,r,i){if(!v.acceptData(e))return;var s,o,u=v.expando,a=typeof n=="string",f=e.nodeType,l=f?v.cache:e,c=f?e[u]:e[u]&&u;if((!c||!l[c]||!i&&!l[c].data)&&a&&r===t)return;c||(f?e[u]=c=v.deletedIds.pop()||v.guid++:c=u),l[c]||(l[c]={},f||(l[c].toJSON=v.noop));if(typeof n=="object"||typeof n=="function")i?l[c]=v.extend(l[c],n):l[c].data=v.extend(l[c].data,n);return s=l[c],i||(s.data||(s.data={}),s=s.data),r!==t&&(s[v.camelCase(n)]=r),a?(o=s[n],o==null&&(o=s[v.camelCase(n)])):o=s,o},removeData:function(e,t,n){if(!v.acceptData(e))return;var r,i,s,o=e.nodeType,u=o?v.cache:e,a=o?e[v.expando]:v.expando;if(!u[a])return;if(t){r=n?u[a]:u[a].data;if(r){v.isArray(t)||(t in r?t=[t]:(t=v.camelCase(t),t in r?t=[t]:t=t.split(" ")));for(i=0,s=t.length;i<s;i++)delete r[t[i]];if(!(n?B:v.isEmptyObject)(r))return}}if(!n){delete u[a].data;if(!B(u[a]))return}o?v.cleanData([e],!0):v.support.deleteExpando||u!=u.window?delete u[a]:u[a]=null},_data:function(e,t,n){return v.data(e,t,n,!0)},acceptData:function(e){var t=e.nodeName&&v.noData[e.nodeName.toLowerCase()];return!t||t!==!0&&e.getAttribute("classid")===t}}),v.fn.extend({data:function(e,n){var r,i,s,o,u,a=this[0],f=0,l=null;if(e===t){if(this.length){l=v.data(a);if(a.nodeType===1&&!v._data(a,"parsedAttrs")){s=a.attributes;for(u=s.length;f<u;f++)o=s[f].name,o.indexOf("data-")||(o=v.camelCase(o.substring(5)),H(a,o,l[o]));v._data(a,"parsedAttrs",!0)}}return l}return typeof e=="object"?this.each(function(){v.data(this,e)}):(r=e.split(".",2),r[1]=r[1]?"."+r[1]:"",i=r[1]+"!",v.access(this,function(n){if(n===t)return l=this.triggerHandler("getData"+i,[r[0]]),l===t&&a&&(l=v.data(a,e),l=H(a,e,l)),l===t&&r[1]?this.data(r[0]):l;r[1]=n,this.each(function(){var t=v(this);t.triggerHandler("setData"+i,r),v.data(this,e,n),t.triggerHandler("changeData"+i,r)})},null,n,arguments.length>1,null,!1))},removeData:function(e){return this.each(function(){v.removeData(this,e)})}}),v.extend({queue:function(e,t,n){var r;if(e)return t=(t||"fx")+"queue",r=v._data(e,t),n&&(!r||v.isArray(n)?r=v._data(e,t,v.makeArray(n)):r.push(n)),r||[]},dequeue:function(e,t){t=t||"fx";var n=v.queue(e,t),r=n.length,i=n.shift(),s=v._queueHooks(e,t),o=function(){v.dequeue(e,t)};i==="inprogress"&&(i=n.shift(),r--),i&&(t==="fx"&&n.unshift("inprogress"),delete s.stop,i.call(e,o,s)),!r&&s&&s.empty.fire()},_queueHooks:function(e,t){var n=t+"queueHooks";return v._data(e,n)||v._data(e,n,{empty:v.Callbacks("once memory").add(function(){v.removeData(e,t+"queue",!0),v.removeData(e,n,!0)})})}}),v.fn.extend({queue:function(e,n){var r=2;return typeof e!="string"&&(n=e,e="fx",r--),arguments.length<r?v.queue(this[0],e):n===t?this:this.each(function(){var t=v.queue(this,e,n);v._queueHooks(this,e),e==="fx"&&t[0]!=="inprogress"&&v.dequeue(this,e)})},dequeue:function(e){return this.each(function(){v.dequeue(this,e)})},delay:function(e,t){return e=v.fx?v.fx.speeds[e]||e:e,t=t||"fx",this.queue(t,function(t,n){var r=setTimeout(t,e);n.stop=function(){clearTimeout(r)}})},clearQueue:function(e){return this.queue(e||"fx",[])},promise:function(e,n){var r,i=1,s=v.Deferred(),o=this,u=this.length,a=function(){--i||s.resolveWith(o,[o])};typeof e!="string"&&(n=e,e=t),e=e||"fx";while(u--)r=v._data(o[u],e+"queueHooks"),r&&r.empty&&(i++,r.empty.add(a));return a(),s.promise(n)}});var j,F,I,q=/[\t\r\n]/g,R=/\r/g,U=/^(?:button|input)$/i,z=/^(?:button|input|object|select|textarea)$/i,W=/^a(?:rea|)$/i,X=/^(?:autofocus|autoplay|async|checked|controls|defer|disabled|hidden|loop|multiple|open|readonly|required|scoped|selected)$/i,V=v.support.getSetAttribute;v.fn.extend({attr:function(e,t){return v.access(this,v.attr,e,t,arguments.length>1)},removeAttr:function(e){return this.each(function(){v.removeAttr(this,e)})},prop:function(e,t){return v.access(this,v.prop,e,t,arguments.length>1)},removeProp:function(e){return e=v.propFix[e]||e,this.each(function(){try{this[e]=t,delete this[e]}catch(n){}})},addClass:function(e){var t,n,r,i,s,o,u;if(v.isFunction(e))return this.each(function(t){v(this).addClass(e.call(this,t,this.className))});if(e&&typeof e=="string"){t=e.split(y);for(n=0,r=this.length;n<r;n++){i=this[n];if(i.nodeType===1)if(!i.className&&t.length===1)i.className=e;else{s=" "+i.className+" ";for(o=0,u=t.length;o<u;o++)s.indexOf(" "+t[o]+" ")<0&&(s+=t[o]+" ");i.className=v.trim(s)}}}return this},removeClass:function(e){var n,r,i,s,o,u,a;if(v.isFunction(e))return this.each(function(t){v(this).removeClass(e.call(this,t,this.className))});if(e&&typeof e=="string"||e===t){n=(e||"").split(y);for(u=0,a=this.length;u<a;u++){i=this[u];if(i.nodeType===1&&i.className){r=(" "+i.className+" ").replace(q," ");for(s=0,o=n.length;s<o;s++)while(r.indexOf(" "+n[s]+" ")>=0)r=r.replace(" "+n[s]+" "," ");i.className=e?v.trim(r):""}}}return this},toggleClass:function(e,t){var n=typeof e,r=typeof t=="boolean";return v.isFunction(e)?this.each(function(n){v(this).toggleClass(e.call(this,n,this.className,t),t)}):this.each(function(){if(n==="string"){var i,s=0,o=v(this),u=t,a=e.split(y);while(i=a[s++])u=r?u:!o.hasClass(i),o[u?"addClass":"removeClass"](i)}else if(n==="undefined"||n==="boolean")this.className&&v._data(this,"__className__",this.className),this.className=this.className||e===!1?"":v._data(this,"__className__")||""})},hasClass:function(e){var t=" "+e+" ",n=0,r=this.length;for(;n<r;n++)if(this[n].nodeType===1&&(" "+this[n].className+" ").replace(q," ").indexOf(t)>=0)return!0;return!1},val:function(e){var n,r,i,s=this[0];if(!arguments.length){if(s)return n=v.valHooks[s.type]||v.valHooks[s.nodeName.toLowerCase()],n&&"get"in n&&(r=n.get(s,"value"))!==t?r:(r=s.value,typeof r=="string"?r.replace(R,""):r==null?"":r);return}return i=v.isFunction(e),this.each(function(r){var s,o=v(this);if(this.nodeType!==1)return;i?s=e.call(this,r,o.val()):s=e,s==null?s="":typeof s=="number"?s+="":v.isArray(s)&&(s=v.map(s,function(e){return e==null?"":e+""})),n=v.valHooks[this.type]||v.valHooks[this.nodeName.toLowerCase()];if(!n||!("set"in n)||n.set(this,s,"value")===t)this.value=s})}}),v.extend({valHooks:{option:{get:function(e){var t=e.attributes.value;return!t||t.specified?e.value:e.text}},select:{get:function(e){var t,n,r=e.options,i=e.selectedIndex,s=e.type==="select-one"||i<0,o=s?null:[],u=s?i+1:r.length,a=i<0?u:s?i:0;for(;a<u;a++){n=r[a];if((n.selected||a===i)&&(v.support.optDisabled?!n.disabled:n.getAttribute("disabled")===null)&&(!n.parentNode.disabled||!v.nodeName(n.parentNode,"optgroup"))){t=v(n).val();if(s)return t;o.push(t)}}return o},set:function(e,t){var n=v.makeArray(t);return v(e).find("option").each(function(){this.selected=v.inArray(v(this).val(),n)>=0}),n.length||(e.selectedIndex=-1),n}}},attrFn:{},attr:function(e,n,r,i){var s,o,u,a=e.nodeType;if(!e||a===3||a===8||a===2)return;if(i&&v.isFunction(v.fn[n]))return v(e)[n](r);if(typeof e.getAttribute=="undefined")return v.prop(e,n,r);u=a!==1||!v.isXMLDoc(e),u&&(n=n.toLowerCase(),o=v.attrHooks[n]||(X.test(n)?F:j));if(r!==t){if(r===null){v.removeAttr(e,n);return}return o&&"set"in o&&u&&(s=o.set(e,r,n))!==t?s:(e.setAttribute(n,r+""),r)}return o&&"get"in o&&u&&(s=o.get(e,n))!==null?s:(s=e.getAttribute(n),s===null?t:s)},removeAttr:function(e,t){var n,r,i,s,o=0;if(t&&e.nodeType===1){r=t.split(y);for(;o<r.length;o++)i=r[o],i&&(n=v.propFix[i]||i,s=X.test(i),s||v.attr(e,i,""),e.removeAttribute(V?i:n),s&&n in e&&(e[n]=!1))}},attrHooks:{type:{set:function(e,t){if(U.test(e.nodeName)&&e.parentNode)v.error("type property can't be changed");else if(!v.support.radioValue&&t==="radio"&&v.nodeName(e,"input")){var n=e.value;return e.setAttribute("type",t),n&&(e.value=n),t}}},value:{get:function(e,t){return j&&v.nodeName(e,"button")?j.get(e,t):t in e?e.value:null},set:function(e,t,n){if(j&&v.nodeName(e,"button"))return j.set(e,t,n);e.value=t}}},propFix:{tabindex:"tabIndex",readonly:"readOnly","for":"htmlFor","class":"className",maxlength:"maxLength",cellspacing:"cellSpacing",cellpadding:"cellPadding",rowspan:"rowSpan",colspan:"colSpan",usemap:"useMap",frameborder:"frameBorder",contenteditable:"contentEditable"},prop:function(e,n,r){var i,s,o,u=e.nodeType;if(!e||u===3||u===8||u===2)return;return o=u!==1||!v.isXMLDoc(e),o&&(n=v.propFix[n]||n,s=v.propHooks[n]),r!==t?s&&"set"in s&&(i=s.set(e,r,n))!==t?i:e[n]=r:s&&"get"in s&&(i=s.get(e,n))!==null?i:e[n]},propHooks:{tabIndex:{get:function(e){var n=e.getAttributeNode("tabindex");return n&&n.specified?parseInt(n.value,10):z.test(e.nodeName)||W.test(e.nodeName)&&e.href?0:t}}}}),F={get:function(e,n){var r,i=v.prop(e,n);return i===!0||typeof i!="boolean"&&(r=e.getAttributeNode(n))&&r.nodeValue!==!1?n.toLowerCase():t},set:function(e,t,n){var r;return t===!1?v.removeAttr(e,n):(r=v.propFix[n]||n,r in e&&(e[r]=!0),e.setAttribute(n,n.toLowerCase())),n}},V||(I={name:!0,id:!0,coords:!0},j=v.valHooks.button={get:function(e,n){var r;return r=e.getAttributeNode(n),r&&(I[n]?r.value!=="":r.specified)?r.value:t},set:function(e,t,n){var r=e.getAttributeNode(n);return r||(r=i.createAttribute(n),e.setAttributeNode(r)),r.value=t+""}},v.each(["width","height"],function(e,t){v.attrHooks[t]=v.extend(v.attrHooks[t],{set:function(e,n){if(n==="")return e.setAttribute(t,"auto"),n}})}),v.attrHooks.contenteditable={get:j.get,set:function(e,t,n){t===""&&(t="false"),j.set(e,t,n)}}),v.support.hrefNormalized||v.each(["href","src","width","height"],function(e,n){v.attrHooks[n]=v.extend(v.attrHooks[n],{get:function(e){var r=e.getAttribute(n,2);return r===null?t:r}})}),v.support.style||(v.attrHooks.style={get:function(e){return e.style.cssText.toLowerCase()||t},set:function(e,t){return e.style.cssText=t+""}}),v.support.optSelected||(v.propHooks.selected=v.extend(v.propHooks.selected,{get:function(e){var t=e.parentNode;return t&&(t.selectedIndex,t.parentNode&&t.parentNode.selectedIndex),null}})),v.support.enctype||(v.propFix.enctype="encoding"),v.support.checkOn||v.each(["radio","checkbox"],function(){v.valHooks[this]={get:function(e){return e.getAttribute("value")===null?"on":e.value}}}),v.each(["radio","checkbox"],function(){v.valHooks[this]=v.extend(v.valHooks[this],{set:function(e,t){if(v.isArray(t))return e.checked=v.inArray(v(e).val(),t)>=0}})});var $=/^(?:textarea|input|select)$/i,J=/^([^\.]*|)(?:\.(.+)|)$/,K=/(?:^|\s)hover(\.\S+|)\b/,Q=/^key/,G=/^(?:mouse|contextmenu)|click/,Y=/^(?:focusinfocus|focusoutblur)$/,Z=function(e){return v.event.special.hover?e:e.replace(K,"mouseenter$1 mouseleave$1")};v.event={add:function(e,n,r,i,s){var o,u,a,f,l,c,h,p,d,m,g;if(e.nodeType===3||e.nodeType===8||!n||!r||!(o=v._data(e)))return;r.handler&&(d=r,r=d.handler,s=d.selector),r.guid||(r.guid=v.guid++),a=o.events,a||(o.events=a={}),u=o.handle,u||(o.handle=u=function(e){return typeof v=="undefined"||!!e&&v.event.triggered===e.type?t:v.event.dispatch.apply(u.elem,arguments)},u.elem=e),n=v.trim(Z(n)).split(" ");for(f=0;f<n.length;f++){l=J.exec(n[f])||[],c=l[1],h=(l[2]||"").split(".").sort(),g=v.event.special[c]||{},c=(s?g.delegateType:g.bindType)||c,g=v.event.special[c]||{},p=v.extend({type:c,origType:l[1],data:i,handler:r,guid:r.guid,selector:s,needsContext:s&&v.expr.match.needsContext.test(s),namespace:h.join(".")},d),m=a[c];if(!m){m=a[c]=[],m.delegateCount=0;if(!g.setup||g.setup.call(e,i,h,u)===!1)e.addEventListener?e.addEventListener(c,u,!1):e.attachEvent&&e.attachEvent("on"+c,u)}g.add&&(g.add.call(e,p),p.handler.guid||(p.handler.guid=r.guid)),s?m.splice(m.delegateCount++,0,p):m.push(p),v.event.global[c]=!0}e=null},global:{},remove:function(e,t,n,r,i){var s,o,u,a,f,l,c,h,p,d,m,g=v.hasData(e)&&v._data(e);if(!g||!(h=g.events))return;t=v.trim(Z(t||"")).split(" ");for(s=0;s<t.length;s++){o=J.exec(t[s])||[],u=a=o[1],f=o[2];if(!u){for(u in h)v.event.remove(e,u+t[s],n,r,!0);continue}p=v.event.special[u]||{},u=(r?p.delegateType:p.bindType)||u,d=h[u]||[],l=d.length,f=f?new RegExp("(^|\\.)"+f.split(".").sort().join("\\.(?:.*\\.|)")+"(\\.|$)"):null;for(c=0;c<d.length;c++)m=d[c],(i||a===m.origType)&&(!n||n.guid===m.guid)&&(!f||f.test(m.namespace))&&(!r||r===m.selector||r==="**"&&m.selector)&&(d.splice(c--,1),m.selector&&d.delegateCount--,p.remove&&p.remove.call(e,m));d.length===0&&l!==d.length&&((!p.teardown||p.teardown.call(e,f,g.handle)===!1)&&v.removeEvent(e,u,g.handle),delete h[u])}v.isEmptyObject(h)&&(delete g.handle,v.removeData(e,"events",!0))},customEvent:{getData:!0,setData:!0,changeData:!0},trigger:function(n,r,s,o){if(!s||s.nodeType!==3&&s.nodeType!==8){var u,a,f,l,c,h,p,d,m,g,y=n.type||n,b=[];if(Y.test(y+v.event.triggered))return;y.indexOf("!")>=0&&(y=y.slice(0,-1),a=!0),y.indexOf(".")>=0&&(b=y.split("."),y=b.shift(),b.sort());if((!s||v.event.customEvent[y])&&!v.event.global[y])return;n=typeof n=="object"?n[v.expando]?n:new v.Event(y,n):new v.Event(y),n.type=y,n.isTrigger=!0,n.exclusive=a,n.namespace=b.join("."),n.namespace_re=n.namespace?new RegExp("(^|\\.)"+b.join("\\.(?:.*\\.|)")+"(\\.|$)"):null,h=y.indexOf(":")<0?"on"+y:"";if(!s){u=v.cache;for(f in u)u[f].events&&u[f].events[y]&&v.event.trigger(n,r,u[f].handle.elem,!0);return}n.result=t,n.target||(n.target=s),r=r!=null?v.makeArray(r):[],r.unshift(n),p=v.event.special[y]||{};if(p.trigger&&p.trigger.apply(s,r)===!1)return;m=[[s,p.bindType||y]];if(!o&&!p.noBubble&&!v.isWindow(s)){g=p.delegateType||y,l=Y.test(g+y)?s:s.parentNode;for(c=s;l;l=l.parentNode)m.push([l,g]),c=l;c===(s.ownerDocument||i)&&m.push([c.defaultView||c.parentWindow||e,g])}for(f=0;f<m.length&&!n.isPropagationStopped();f++)l=m[f][0],n.type=m[f][1],d=(v._data(l,"events")||{})[n.type]&&v._data(l,"handle"),d&&d.apply(l,r),d=h&&l[h],d&&v.acceptData(l)&&d.apply&&d.apply(l,r)===!1&&n.preventDefault();return n.type=y,!o&&!n.isDefaultPrevented()&&(!p._default||p._default.apply(s.ownerDocument,r)===!1)&&(y!=="click"||!v.nodeName(s,"a"))&&v.acceptData(s)&&h&&s[y]&&(y!=="focus"&&y!=="blur"||n.target.offsetWidth!==0)&&!v.isWindow(s)&&(c=s[h],c&&(s[h]=null),v.event.triggered=y,s[y](),v.event.triggered=t,c&&(s[h]=c)),n.result}return},dispatch:function(n){n=v.event.fix(n||e.event);var r,i,s,o,u,a,f,c,h,p,d=(v._data(this,"events")||{})[n.type]||[],m=d.delegateCount,g=l.call(arguments),y=!n.exclusive&&!n.namespace,b=v.event.special[n.type]||{},w=[];g[0]=n,n.delegateTarget=this;if(b.preDispatch&&b.preDispatch.call(this,n)===!1)return;if(m&&(!n.button||n.type!=="click"))for(s=n.target;s!=this;s=s.parentNode||this)if(s.disabled!==!0||n.type!=="click"){u={},f=[];for(r=0;r<m;r++)c=d[r],h=c.selector,u[h]===t&&(u[h]=c.needsContext?v(h,this).index(s)>=0:v.find(h,this,null,[s]).length),u[h]&&f.push(c);f.length&&w.push({elem:s,matches:f})}d.length>m&&w.push({elem:this,matches:d.slice(m)});for(r=0;r<w.length&&!n.isPropagationStopped();r++){a=w[r],n.currentTarget=a.elem;for(i=0;i<a.matches.length&&!n.isImmediatePropagationStopped();i++){c=a.matches[i];if(y||!n.namespace&&!c.namespace||n.namespace_re&&n.namespace_re.test(c.namespace))n.data=c.data,n.handleObj=c,o=((v.event.special[c.origType]||{}).handle||c.handler).apply(a.elem,g),o!==t&&(n.result=o,o===!1&&(n.preventDefault(),n.stopPropagation()))}}return b.postDispatch&&b.postDispatch.call(this,n),n.result},props:"attrChange attrName relatedNode srcElement altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),fixHooks:{},keyHooks:{props:"char charCode key keyCode".split(" "),filter:function(e,t){return e.which==null&&(e.which=t.charCode!=null?t.charCode:t.keyCode),e}},mouseHooks:{props:"button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),filter:function(e,n){var r,s,o,u=n.button,a=n.fromElement;return e.pageX==null&&n.clientX!=null&&(r=e.target.ownerDocument||i,s=r.documentElement,o=r.body,e.pageX=n.clientX+(s&&s.scrollLeft||o&&o.scrollLeft||0)-(s&&s.clientLeft||o&&o.clientLeft||0),e.pageY=n.clientY+(s&&s.scrollTop||o&&o.scrollTop||0)-(s&&s.clientTop||o&&o.clientTop||0)),!e.relatedTarget&&a&&(e.relatedTarget=a===e.target?n.toElement:a),!e.which&&u!==t&&(e.which=u&1?1:u&2?3:u&4?2:0),e}},fix:function(e){if(e[v.expando])return e;var t,n,r=e,s=v.event.fixHooks[e.type]||{},o=s.props?this.props.concat(s.props):this.props;e=v.Event(r);for(t=o.length;t;)n=o[--t],e[n]=r[n];return e.target||(e.target=r.srcElement||i),e.target.nodeType===3&&(e.target=e.target.parentNode),e.metaKey=!!e.metaKey,s.filter?s.filter(e,r):e},special:{load:{noBubble:!0},focus:{delegateType:"focusin"},blur:{delegateType:"focusout"},beforeunload:{setup:function(e,t,n){v.isWindow(this)&&(this.onbeforeunload=n)},teardown:function(e,t){this.onbeforeunload===t&&(this.onbeforeunload=null)}}},simulate:function(e,t,n,r){var i=v.extend(new v.Event,n,{type:e,isSimulated:!0,originalEvent:{}});r?v.event.trigger(i,null,t):v.event.dispatch.call(t,i),i.isDefaultPrevented()&&n.preventDefault()}},v.event.handle=v.event.dispatch,v.removeEvent=i.removeEventListener?function(e,t,n){e.removeEventListener&&e.removeEventListener(t,n,!1)}:function(e,t,n){var r="on"+t;e.detachEvent&&(typeof e[r]=="undefined"&&(e[r]=null),e.detachEvent(r,n))},v.Event=function(e,t){if(!(this instanceof v.Event))return new v.Event(e,t);e&&e.type?(this.originalEvent=e,this.type=e.type,this.isDefaultPrevented=e.defaultPrevented||e.returnValue===!1||e.getPreventDefault&&e.getPreventDefault()?tt:et):this.type=e,t&&v.extend(this,t),this.timeStamp=e&&e.timeStamp||v.now(),this[v.expando]=!0},v.Event.prototype={preventDefault:function(){this.isDefaultPrevented=tt;var e=this.originalEvent;if(!e)return;e.preventDefault?e.preventDefault():e.returnValue=!1},stopPropagation:function(){this.isPropagationStopped=tt;var e=this.originalEvent;if(!e)return;e.stopPropagation&&e.stopPropagation(),e.cancelBubble=!0},stopImmediatePropagation:function(){this.isImmediatePropagationStopped=tt,this.stopPropagation()},isDefaultPrevented:et,isPropagationStopped:et,isImmediatePropagationStopped:et},v.each({mouseenter:"mouseover",mouseleave:"mouseout"},function(e,t){v.event.special[e]={delegateType:t,bindType:t,handle:function(e){var n,r=this,i=e.relatedTarget,s=e.handleObj,o=s.selector;if(!i||i!==r&&!v.contains(r,i))e.type=s.origType,n=s.handler.apply(this,arguments),e.type=t;return n}}}),v.support.submitBubbles||(v.event.special.submit={setup:function(){if(v.nodeName(this,"form"))return!1;v.event.add(this,"click._submit keypress._submit",function(e){var n=e.target,r=v.nodeName(n,"input")||v.nodeName(n,"button")?n.form:t;r&&!v._data(r,"_submit_attached")&&(v.event.add(r,"submit._submit",function(e){e._submit_bubble=!0}),v._data(r,"_submit_attached",!0))})},postDispatch:function(e){e._submit_bubble&&(delete e._submit_bubble,this.parentNode&&!e.isTrigger&&v.event.simulate("submit",this.parentNode,e,!0))},teardown:function(){if(v.nodeName(this,"form"))return!1;v.event.remove(this,"._submit")}}),v.support.changeBubbles||(v.event.special.change={setup:function(){if($.test(this.nodeName)){if(this.type==="checkbox"||this.type==="radio")v.event.add(this,"propertychange._change",function(e){e.originalEvent.propertyName==="checked"&&(this._just_changed=!0)}),v.event.add(this,"click._change",function(e){this._just_changed&&!e.isTrigger&&(this._just_changed=!1),v.event.simulate("change",this,e,!0)});return!1}v.event.add(this,"beforeactivate._change",function(e){var t=e.target;$.test(t.nodeName)&&!v._data(t,"_change_attached")&&(v.event.add(t,"change._change",function(e){this.parentNode&&!e.isSimulated&&!e.isTrigger&&v.event.simulate("change",this.parentNode,e,!0)}),v._data(t,"_change_attached",!0))})},handle:function(e){var t=e.target;if(this!==t||e.isSimulated||e.isTrigger||t.type!=="radio"&&t.type!=="checkbox")return e.handleObj.handler.apply(this,arguments)},teardown:function(){return v.event.remove(this,"._change"),!$.test(this.nodeName)}}),v.support.focusinBubbles||v.each({focus:"focusin",blur:"focusout"},function(e,t){var n=0,r=function(e){v.event.simulate(t,e.target,v.event.fix(e),!0)};v.event.special[t]={setup:function(){n++===0&&i.addEventListener(e,r,!0)},teardown:function(){--n===0&&i.removeEventListener(e,r,!0)}}}),v.fn.extend({on:function(e,n,r,i,s){var o,u;if(typeof e=="object"){typeof n!="string"&&(r=r||n,n=t);for(u in e)this.on(u,n,r,e[u],s);return this}r==null&&i==null?(i=n,r=n=t):i==null&&(typeof n=="string"?(i=r,r=t):(i=r,r=n,n=t));if(i===!1)i=et;else if(!i)return this;return s===1&&(o=i,i=function(e){return v().off(e),o.apply(this,arguments)},i.guid=o.guid||(o.guid=v.guid++)),this.each(function(){v.event.add(this,e,i,r,n)})},one:function(e,t,n,r){return this.on(e,t,n,r,1)},off:function(e,n,r){var i,s;if(e&&e.preventDefault&&e.handleObj)return i=e.handleObj,v(e.delegateTarget).off(i.namespace?i.origType+"."+i.namespace:i.origType,i.selector,i.handler),this;if(typeof e=="object"){for(s in e)this.off(s,n,e[s]);return this}if(n===!1||typeof n=="function")r=n,n=t;return r===!1&&(r=et),this.each(function(){v.event.remove(this,e,r,n)})},bind:function(e,t,n){return this.on(e,null,t,n)},unbind:function(e,t){return this.off(e,null,t)},live:function(e,t,n){return v(this.context).on(e,this.selector,t,n),this},die:function(e,t){return v(this.context).off(e,this.selector||"**",t),this},delegate:function(e,t,n,r){return this.on(t,e,n,r)},undelegate:function(e,t,n){return arguments.length===1?this.off(e,"**"):this.off(t,e||"**",n)},trigger:function(e,t){return this.each(function(){v.event.trigger(e,t,this)})},triggerHandler:function(e,t){if(this[0])return v.event.trigger(e,t,this[0],!0)},toggle:function(e){var t=arguments,n=e.guid||v.guid++,r=0,i=function(n){var i=(v._data(this,"lastToggle"+e.guid)||0)%r;return v._data(this,"lastToggle"+e.guid,i+1),n.preventDefault(),t[i].apply(this,arguments)||!1};i.guid=n;while(r<t.length)t[r++].guid=n;return this.click(i)},hover:function(e,t){return this.mouseenter(e).mouseleave(t||e)}}),v.each("blur focus focusin focusout load resize scroll unload click dblclick mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave change select submit keydown keypress keyup error contextmenu".split(" "),function(e,t){v.fn[t]=function(e,n){return n==null&&(n=e,e=null),arguments.length>0?this.on(t,null,e,n):this.trigger(t)},Q.test(t)&&(v.event.fixHooks[t]=v.event.keyHooks),G.test(t)&&(v.event.fixHooks[t]=v.event.mouseHooks)}),function(e,t){function nt(e,t,n,r){n=n||[],t=t||g;var i,s,a,f,l=t.nodeType;if(!e||typeof e!="string")return n;if(l!==1&&l!==9)return[];a=o(t);if(!a&&!r)if(i=R.exec(e))if(f=i[1]){if(l===9){s=t.getElementById(f);if(!s||!s.parentNode)return n;if(s.id===f)return n.push(s),n}else if(t.ownerDocument&&(s=t.ownerDocument.getElementById(f))&&u(t,s)&&s.id===f)return n.push(s),n}else{if(i[2])return S.apply(n,x.call(t.getElementsByTagName(e),0)),n;if((f=i[3])&&Z&&t.getElementsByClassName)return S.apply(n,x.call(t.getElementsByClassName(f),0)),n}return vt(e.replace(j,"$1"),t,n,r,a)}function rt(e){return function(t){var n=t.nodeName.toLowerCase();return n==="input"&&t.type===e}}function it(e){return function(t){var n=t.nodeName.toLowerCase();return(n==="input"||n==="button")&&t.type===e}}function st(e){return N(function(t){return t=+t,N(function(n,r){var i,s=e([],n.length,t),o=s.length;while(o--)n[i=s[o]]&&(n[i]=!(r[i]=n[i]))})})}function ot(e,t,n){if(e===t)return n;var r=e.nextSibling;while(r){if(r===t)return-1;r=r.nextSibling}return 1}function ut(e,t){var n,r,s,o,u,a,f,l=L[d][e+" "];if(l)return t?0:l.slice(0);u=e,a=[],f=i.preFilter;while(u){if(!n||(r=F.exec(u)))r&&(u=u.slice(r[0].length)||u),a.push(s=[]);n=!1;if(r=I.exec(u))s.push(n=new m(r.shift())),u=u.slice(n.length),n.type=r[0].replace(j," ");for(o in i.filter)(r=J[o].exec(u))&&(!f[o]||(r=f[o](r)))&&(s.push(n=new m(r.shift())),u=u.slice(n.length),n.type=o,n.matches=r);if(!n)break}return t?u.length:u?nt.error(e):L(e,a).slice(0)}function at(e,t,r){var i=t.dir,s=r&&t.dir==="parentNode",o=w++;return t.first?function(t,n,r){while(t=t[i])if(s||t.nodeType===1)return e(t,n,r)}:function(t,r,u){if(!u){var a,f=b+" "+o+" ",l=f+n;while(t=t[i])if(s||t.nodeType===1){if((a=t[d])===l)return t.sizset;if(typeof a=="string"&&a.indexOf(f)===0){if(t.sizset)return t}else{t[d]=l;if(e(t,r,u))return t.sizset=!0,t;t.sizset=!1}}}else while(t=t[i])if(s||t.nodeType===1)if(e(t,r,u))return t}}function ft(e){return e.length>1?function(t,n,r){var i=e.length;while(i--)if(!e[i](t,n,r))return!1;return!0}:e[0]}function lt(e,t,n,r,i){var s,o=[],u=0,a=e.length,f=t!=null;for(;u<a;u++)if(s=e[u])if(!n||n(s,r,i))o.push(s),f&&t.push(u);return o}function ct(e,t,n,r,i,s){return r&&!r[d]&&(r=ct(r)),i&&!i[d]&&(i=ct(i,s)),N(function(s,o,u,a){var f,l,c,h=[],p=[],d=o.length,v=s||dt(t||"*",u.nodeType?[u]:u,[]),m=e&&(s||!t)?lt(v,h,e,u,a):v,g=n?i||(s?e:d||r)?[]:o:m;n&&n(m,g,u,a);if(r){f=lt(g,p),r(f,[],u,a),l=f.length;while(l--)if(c=f[l])g[p[l]]=!(m[p[l]]=c)}if(s){if(i||e){if(i){f=[],l=g.length;while(l--)(c=g[l])&&f.push(m[l]=c);i(null,g=[],f,a)}l=g.length;while(l--)(c=g[l])&&(f=i?T.call(s,c):h[l])>-1&&(s[f]=!(o[f]=c))}}else g=lt(g===o?g.splice(d,g.length):g),i?i(null,o,g,a):S.apply(o,g)})}function ht(e){var t,n,r,s=e.length,o=i.relative[e[0].type],u=o||i.relative[" "],a=o?1:0,f=at(function(e){return e===t},u,!0),l=at(function(e){return T.call(t,e)>-1},u,!0),h=[function(e,n,r){return!o&&(r||n!==c)||((t=n).nodeType?f(e,n,r):l(e,n,r))}];for(;a<s;a++)if(n=i.relative[e[a].type])h=[at(ft(h),n)];else{n=i.filter[e[a].type].apply(null,e[a].matches);if(n[d]){r=++a;for(;r<s;r++)if(i.relative[e[r].type])break;return ct(a>1&&ft(h),a>1&&e.slice(0,a-1).join("").replace(j,"$1"),n,a<r&&ht(e.slice(a,r)),r<s&&ht(e=e.slice(r)),r<s&&e.join(""))}h.push(n)}return ft(h)}function pt(e,t){var r=t.length>0,s=e.length>0,o=function(u,a,f,l,h){var p,d,v,m=[],y=0,w="0",x=u&&[],T=h!=null,N=c,C=u||s&&i.find.TAG("*",h&&a.parentNode||a),k=b+=N==null?1:Math.E;T&&(c=a!==g&&a,n=o.el);for(;(p=C[w])!=null;w++){if(s&&p){for(d=0;v=e[d];d++)if(v(p,a,f)){l.push(p);break}T&&(b=k,n=++o.el)}r&&((p=!v&&p)&&y--,u&&x.push(p))}y+=w;if(r&&w!==y){for(d=0;v=t[d];d++)v(x,m,a,f);if(u){if(y>0)while(w--)!x[w]&&!m[w]&&(m[w]=E.call(l));m=lt(m)}S.apply(l,m),T&&!u&&m.length>0&&y+t.length>1&&nt.uniqueSort(l)}return T&&(b=k,c=N),x};return o.el=0,r?N(o):o}function dt(e,t,n){var r=0,i=t.length;for(;r<i;r++)nt(e,t[r],n);return n}function vt(e,t,n,r,s){var o,u,f,l,c,h=ut(e),p=h.length;if(!r&&h.length===1){u=h[0]=h[0].slice(0);if(u.length>2&&(f=u[0]).type==="ID"&&t.nodeType===9&&!s&&i.relative[u[1].type]){t=i.find.ID(f.matches[0].replace($,""),t,s)[0];if(!t)return n;e=e.slice(u.shift().length)}for(o=J.POS.test(e)?-1:u.length-1;o>=0;o--){f=u[o];if(i.relative[l=f.type])break;if(c=i.find[l])if(r=c(f.matches[0].replace($,""),z.test(u[0].type)&&t.parentNode||t,s)){u.splice(o,1),e=r.length&&u.join("");if(!e)return S.apply(n,x.call(r,0)),n;break}}}return a(e,h)(r,t,s,n,z.test(e)),n}function mt(){}var n,r,i,s,o,u,a,f,l,c,h=!0,p="undefined",d=("sizcache"+Math.random()).replace(".",""),m=String,g=e.document,y=g.documentElement,b=0,w=0,E=[].pop,S=[].push,x=[].slice,T=[].indexOf||function(e){var t=0,n=this.length;for(;t<n;t++)if(this[t]===e)return t;return-1},N=function(e,t){return e[d]=t==null||t,e},C=function(){var e={},t=[];return N(function(n,r){return t.push(n)>i.cacheLength&&delete e[t.shift()],e[n+" "]=r},e)},k=C(),L=C(),A=C(),O="[\\x20\\t\\r\\n\\f]",M="(?:\\\\.|[-\\w]|[^\\x00-\\xa0])+",_=M.replace("w","w#"),D="([*^$|!~]?=)",P="\\["+O+"*("+M+")"+O+"*(?:"+D+O+"*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|("+_+")|)|)"+O+"*\\]",H=":("+M+")(?:\\((?:(['\"])((?:\\\\.|[^\\\\])*?)\\2|([^()[\\]]*|(?:(?:"+P+")|[^:]|\\\\.)*|.*))\\)|)",B=":(even|odd|eq|gt|lt|nth|first|last)(?:\\("+O+"*((?:-\\d)?\\d*)"+O+"*\\)|)(?=[^-]|$)",j=new RegExp("^"+O+"+|((?:^|[^\\\\])(?:\\\\.)*)"+O+"+$","g"),F=new RegExp("^"+O+"*,"+O+"*"),I=new RegExp("^"+O+"*([\\x20\\t\\r\\n\\f>+~])"+O+"*"),q=new RegExp(H),R=/^(?:#([\w\-]+)|(\w+)|\.([\w\-]+))$/,U=/^:not/,z=/[\x20\t\r\n\f]*[+~]/,W=/:not\($/,X=/h\d/i,V=/input|select|textarea|button/i,$=/\\(?!\\)/g,J={ID:new RegExp("^#("+M+")"),CLASS:new RegExp("^\\.("+M+")"),NAME:new RegExp("^\\[name=['\"]?("+M+")['\"]?\\]"),TAG:new RegExp("^("+M.replace("w","w*")+")"),ATTR:new RegExp("^"+P),PSEUDO:new RegExp("^"+H),POS:new RegExp(B,"i"),CHILD:new RegExp("^:(only|nth|first|last)-child(?:\\("+O+"*(even|odd|(([+-]|)(\\d*)n|)"+O+"*(?:([+-]|)"+O+"*(\\d+)|))"+O+"*\\)|)","i"),needsContext:new RegExp("^"+O+"*[>+~]|"+B,"i")},K=function(e){var t=g.createElement("div");try{return e(t)}catch(n){return!1}finally{t=null}},Q=K(function(e){return e.appendChild(g.createComment("")),!e.getElementsByTagName("*").length}),G=K(function(e){return e.innerHTML="<a href='#'></a>",e.firstChild&&typeof e.firstChild.getAttribute!==p&&e.firstChild.getAttribute("href")==="#"}),Y=K(function(e){e.innerHTML="<select></select>";var t=typeof e.lastChild.getAttribute("multiple");return t!=="boolean"&&t!=="string"}),Z=K(function(e){return e.innerHTML="<div class='hidden e'></div><div class='hidden'></div>",!e.getElementsByClassName||!e.getElementsByClassName("e").length?!1:(e.lastChild.className="e",e.getElementsByClassName("e").length===2)}),et=K(function(e){e.id=d+0,e.innerHTML="<a name='"+d+"'></a><div name='"+d+"'></div>",y.insertBefore(e,y.firstChild);var t=g.getElementsByName&&g.getElementsByName(d).length===2+g.getElementsByName(d+0).length;return r=!g.getElementById(d),y.removeChild(e),t});try{x.call(y.childNodes,0)[0].nodeType}catch(tt){x=function(e){var t,n=[];for(;t=this[e];e++)n.push(t);return n}}nt.matches=function(e,t){return nt(e,null,null,t)},nt.matchesSelector=function(e,t){return nt(t,null,null,[e]).length>0},s=nt.getText=function(e){var t,n="",r=0,i=e.nodeType;if(i){if(i===1||i===9||i===11){if(typeof e.textContent=="string")return e.textContent;for(e=e.firstChild;e;e=e.nextSibling)n+=s(e)}else if(i===3||i===4)return e.nodeValue}else for(;t=e[r];r++)n+=s(t);return n},o=nt.isXML=function(e){var t=e&&(e.ownerDocument||e).documentElement;return t?t.nodeName!=="HTML":!1},u=nt.contains=y.contains?function(e,t){var n=e.nodeType===9?e.documentElement:e,r=t&&t.parentNode;return e===r||!!(r&&r.nodeType===1&&n.contains&&n.contains(r))}:y.compareDocumentPosition?function(e,t){return t&&!!(e.compareDocumentPosition(t)&16)}:function(e,t){while(t=t.parentNode)if(t===e)return!0;return!1},nt.attr=function(e,t){var n,r=o(e);return r||(t=t.toLowerCase()),(n=i.attrHandle[t])?n(e):r||Y?e.getAttribute(t):(n=e.getAttributeNode(t),n?typeof e[t]=="boolean"?e[t]?t:null:n.specified?n.value:null:null)},i=nt.selectors={cacheLength:50,createPseudo:N,match:J,attrHandle:G?{}:{href:function(e){return e.getAttribute("href",2)},type:function(e){return e.getAttribute("type")}},find:{ID:r?function(e,t,n){if(typeof t.getElementById!==p&&!n){var r=t.getElementById(e);return r&&r.parentNode?[r]:[]}}:function(e,n,r){if(typeof n.getElementById!==p&&!r){var i=n.getElementById(e);return i?i.id===e||typeof i.getAttributeNode!==p&&i.getAttributeNode("id").value===e?[i]:t:[]}},TAG:Q?function(e,t){if(typeof t.getElementsByTagName!==p)return t.getElementsByTagName(e)}:function(e,t){var n=t.getElementsByTagName(e);if(e==="*"){var r,i=[],s=0;for(;r=n[s];s++)r.nodeType===1&&i.push(r);return i}return n},NAME:et&&function(e,t){if(typeof t.getElementsByName!==p)return t.getElementsByName(name)},CLASS:Z&&function(e,t,n){if(typeof t.getElementsByClassName!==p&&!n)return t.getElementsByClassName(e)}},relative:{">":{dir:"parentNode",first:!0}," ":{dir:"parentNode"},"+":{dir:"previousSibling",first:!0},"~":{dir:"previousSibling"}},preFilter:{ATTR:function(e){return e[1]=e[1].replace($,""),e[3]=(e[4]||e[5]||"").replace($,""),e[2]==="~="&&(e[3]=" "+e[3]+" "),e.slice(0,4)},CHILD:function(e){return e[1]=e[1].toLowerCase(),e[1]==="nth"?(e[2]||nt.error(e[0]),e[3]=+(e[3]?e[4]+(e[5]||1):2*(e[2]==="even"||e[2]==="odd")),e[4]=+(e[6]+e[7]||e[2]==="odd")):e[2]&&nt.error(e[0]),e},PSEUDO:function(e){var t,n;if(J.CHILD.test(e[0]))return null;if(e[3])e[2]=e[3];else if(t=e[4])q.test(t)&&(n=ut(t,!0))&&(n=t.indexOf(")",t.length-n)-t.length)&&(t=t.slice(0,n),e[0]=e[0].slice(0,n)),e[2]=t;return e.slice(0,3)}},filter:{ID:r?function(e){return e=e.replace($,""),function(t){return t.getAttribute("id")===e}}:function(e){return e=e.replace($,""),function(t){var n=typeof t.getAttributeNode!==p&&t.getAttributeNode("id");return n&&n.value===e}},TAG:function(e){return e==="*"?function(){return!0}:(e=e.replace($,"").toLowerCase(),function(t){return t.nodeName&&t.nodeName.toLowerCase()===e})},CLASS:function(e){var t=k[d][e+" "];return t||(t=new RegExp("(^|"+O+")"+e+"("+O+"|$)"))&&k(e,function(e){return t.test(e.className||typeof e.getAttribute!==p&&e.getAttribute("class")||"")})},ATTR:function(e,t,n){return function(r,i){var s=nt.attr(r,e);return s==null?t==="!=":t?(s+="",t==="="?s===n:t==="!="?s!==n:t==="^="?n&&s.indexOf(n)===0:t==="*="?n&&s.indexOf(n)>-1:t==="$="?n&&s.substr(s.length-n.length)===n:t==="~="?(" "+s+" ").indexOf(n)>-1:t==="|="?s===n||s.substr(0,n.length+1)===n+"-":!1):!0}},CHILD:function(e,t,n,r){return e==="nth"?function(e){var t,i,s=e.parentNode;if(n===1&&r===0)return!0;if(s){i=0;for(t=s.firstChild;t;t=t.nextSibling)if(t.nodeType===1){i++;if(e===t)break}}return i-=r,i===n||i%n===0&&i/n>=0}:function(t){var n=t;switch(e){case"only":case"first":while(n=n.previousSibling)if(n.nodeType===1)return!1;if(e==="first")return!0;n=t;case"last":while(n=n.nextSibling)if(n.nodeType===1)return!1;return!0}}},PSEUDO:function(e,t){var n,r=i.pseudos[e]||i.setFilters[e.toLowerCase()]||nt.error("unsupported pseudo: "+e);return r[d]?r(t):r.length>1?(n=[e,e,"",t],i.setFilters.hasOwnProperty(e.toLowerCase())?N(function(e,n){var i,s=r(e,t),o=s.length;while(o--)i=T.call(e,s[o]),e[i]=!(n[i]=s[o])}):function(e){return r(e,0,n)}):r}},pseudos:{not:N(function(e){var t=[],n=[],r=a(e.replace(j,"$1"));return r[d]?N(function(e,t,n,i){var s,o=r(e,null,i,[]),u=e.length;while(u--)if(s=o[u])e[u]=!(t[u]=s)}):function(e,i,s){return t[0]=e,r(t,null,s,n),!n.pop()}}),has:N(function(e){return function(t){return nt(e,t).length>0}}),contains:N(function(e){return function(t){return(t.textContent||t.innerText||s(t)).indexOf(e)>-1}}),enabled:function(e){return e.disabled===!1},disabled:function(e){return e.disabled===!0},checked:function(e){var t=e.nodeName.toLowerCase();return t==="input"&&!!e.checked||t==="option"&&!!e.selected},selected:function(e){return e.parentNode&&e.parentNode.selectedIndex,e.selected===!0},parent:function(e){return!i.pseudos.empty(e)},empty:function(e){var t;e=e.firstChild;while(e){if(e.nodeName>"@"||(t=e.nodeType)===3||t===4)return!1;e=e.nextSibling}return!0},header:function(e){return X.test(e.nodeName)},text:function(e){var t,n;return e.nodeName.toLowerCase()==="input"&&(t=e.type)==="text"&&((n=e.getAttribute("type"))==null||n.toLowerCase()===t)},radio:rt("radio"),checkbox:rt("checkbox"),file:rt("file"),password:rt("password"),image:rt("image"),submit:it("submit"),reset:it("reset"),button:function(e){var t=e.nodeName.toLowerCase();return t==="input"&&e.type==="button"||t==="button"},input:function(e){return V.test(e.nodeName)},focus:function(e){var t=e.ownerDocument;return e===t.activeElement&&(!t.hasFocus||t.hasFocus())&&!!(e.type||e.href||~e.tabIndex)},active:function(e){return e===e.ownerDocument.activeElement},first:st(function(){return[0]}),last:st(function(e,t){return[t-1]}),eq:st(function(e,t,n){return[n<0?n+t:n]}),even:st(function(e,t){for(var n=0;n<t;n+=2)e.push(n);return e}),odd:st(function(e,t){for(var n=1;n<t;n+=2)e.push(n);return e}),lt:st(function(e,t,n){for(var r=n<0?n+t:n;--r>=0;)e.push(r);return e}),gt:st(function(e,t,n){for(var r=n<0?n+t:n;++r<t;)e.push(r);return e})}},f=y.compareDocumentPosition?function(e,t){return e===t?(l=!0,0):(!e.compareDocumentPosition||!t.compareDocumentPosition?e.compareDocumentPosition:e.compareDocumentPosition(t)&4)?-1:1}:function(e,t){if(e===t)return l=!0,0;if(e.sourceIndex&&t.sourceIndex)return e.sourceIndex-t.sourceIndex;var n,r,i=[],s=[],o=e.parentNode,u=t.parentNode,a=o;if(o===u)return ot(e,t);if(!o)return-1;if(!u)return 1;while(a)i.unshift(a),a=a.parentNode;a=u;while(a)s.unshift(a),a=a.parentNode;n=i.length,r=s.length;for(var f=0;f<n&&f<r;f++)if(i[f]!==s[f])return ot(i[f],s[f]);return f===n?ot(e,s[f],-1):ot(i[f],t,1)},[0,0].sort(f),h=!l,nt.uniqueSort=function(e){var t,n=[],r=1,i=0;l=h,e.sort(f);if(l){for(;t=e[r];r++)t===e[r-1]&&(i=n.push(r));while(i--)e.splice(n[i],1)}return e},nt.error=function(e){throw new Error("Syntax error, unrecognized expression: "+e)},a=nt.compile=function(e,t){var n,r=[],i=[],s=A[d][e+" "];if(!s){t||(t=ut(e)),n=t.length;while(n--)s=ht(t[n]),s[d]?r.push(s):i.push(s);s=A(e,pt(i,r))}return s},g.querySelectorAll&&function(){var e,t=vt,n=/'|\\/g,r=/\=[\x20\t\r\n\f]*([^'"\]]*)[\x20\t\r\n\f]*\]/g,i=[":focus"],s=[":active"],u=y.matchesSelector||y.mozMatchesSelector||y.webkitMatchesSelector||y.oMatchesSelector||y.msMatchesSelector;K(function(e){e.innerHTML="<select><option selected=''></option></select>",e.querySelectorAll("[selected]").length||i.push("\\["+O+"*(?:checked|disabled|ismap|multiple|readonly|selected|value)"),e.querySelectorAll(":checked").length||i.push(":checked")}),K(function(e){e.innerHTML="<p test=''></p>",e.querySelectorAll("[test^='']").length&&i.push("[*^$]="+O+"*(?:\"\"|'')"),e.innerHTML="<input type='hidden'/>",e.querySelectorAll(":enabled").length||i.push(":enabled",":disabled")}),i=new RegExp(i.join("|")),vt=function(e,r,s,o,u){if(!o&&!u&&!i.test(e)){var a,f,l=!0,c=d,h=r,p=r.nodeType===9&&e;if(r.nodeType===1&&r.nodeName.toLowerCase()!=="object"){a=ut(e),(l=r.getAttribute("id"))?c=l.replace(n,"\\$&"):r.setAttribute("id",c),c="[id='"+c+"'] ",f=a.length;while(f--)a[f]=c+a[f].join("");h=z.test(e)&&r.parentNode||r,p=a.join(",")}if(p)try{return S.apply(s,x.call(h.querySelectorAll(p),0)),s}catch(v){}finally{l||r.removeAttribute("id")}}return t(e,r,s,o,u)},u&&(K(function(t){e=u.call(t,"div");try{u.call(t,"[test!='']:sizzle"),s.push("!=",H)}catch(n){}}),s=new RegExp(s.join("|")),nt.matchesSelector=function(t,n){n=n.replace(r,"='$1']");if(!o(t)&&!s.test(n)&&!i.test(n))try{var a=u.call(t,n);if(a||e||t.document&&t.document.nodeType!==11)return a}catch(f){}return nt(n,null,null,[t]).length>0})}(),i.pseudos.nth=i.pseudos.eq,i.filters=mt.prototype=i.pseudos,i.setFilters=new mt,nt.attr=v.attr,v.find=nt,v.expr=nt.selectors,v.expr[":"]=v.expr.pseudos,v.unique=nt.uniqueSort,v.text=nt.getText,v.isXMLDoc=nt.isXML,v.contains=nt.contains}(e);var nt=/Until$/,rt=/^(?:parents|prev(?:Until|All))/,it=/^.[^:#\[\.,]*$/,st=v.expr.match.needsContext,ot={children:!0,contents:!0,next:!0,prev:!0};v.fn.extend({find:function(e){var t,n,r,i,s,o,u=this;if(typeof e!="string")return v(e).filter(function(){for(t=0,n=u.length;t<n;t++)if(v.contains(u[t],this))return!0});o=this.pushStack("","find",e);for(t=0,n=this.length;t<n;t++){r=o.length,v.find(e,this[t],o);if(t>0)for(i=r;i<o.length;i++)for(s=0;s<r;s++)if(o[s]===o[i]){o.splice(i--,1);break}}return o},has:function(e){var t,n=v(e,this),r=n.length;return this.filter(function(){for(t=0;t<r;t++)if(v.contains(this,n[t]))return!0})},not:function(e){return this.pushStack(ft(this,e,!1),"not",e)},filter:function(e){return this.pushStack(ft(this,e,!0),"filter",e)},is:function(e){return!!e&&(typeof e=="string"?st.test(e)?v(e,this.context).index(this[0])>=0:v.filter(e,this).length>0:this.filter(e).length>0)},closest:function(e,t){var n,r=0,i=this.length,s=[],o=st.test(e)||typeof e!="string"?v(e,t||this.context):0;for(;r<i;r++){n=this[r];while(n&&n.ownerDocument&&n!==t&&n.nodeType!==11){if(o?o.index(n)>-1:v.find.matchesSelector(n,e)){s.push(n);break}n=n.parentNode}}return s=s.length>1?v.unique(s):s,this.pushStack(s,"closest",e)},index:function(e){return e?typeof e=="string"?v.inArray(this[0],v(e)):v.inArray(e.jquery?e[0]:e,this):this[0]&&this[0].parentNode?this.prevAll().length:-1},add:function(e,t){var n=typeof e=="string"?v(e,t):v.makeArray(e&&e.nodeType?[e]:e),r=v.merge(this.get(),n);return this.pushStack(ut(n[0])||ut(r[0])?r:v.unique(r))},addBack:function(e){return this.add(e==null?this.prevObject:this.prevObject.filter(e))}}),v.fn.andSelf=v.fn.addBack,v.each({parent:function(e){var t=e.parentNode;return t&&t.nodeType!==11?t:null},parents:function(e){return v.dir(e,"parentNode")},parentsUntil:function(e,t,n){return v.dir(e,"parentNode",n)},next:function(e){return at(e,"nextSibling")},prev:function(e){return at(e,"previousSibling")},nextAll:function(e){return v.dir(e,"nextSibling")},prevAll:function(e){return v.dir(e,"previousSibling")},nextUntil:function(e,t,n){return v.dir(e,"nextSibling",n)},prevUntil:function(e,t,n){return v.dir(e,"previousSibling",n)},siblings:function(e){return v.sibling((e.parentNode||{}).firstChild,e)},children:function(e){return v.sibling(e.firstChild)},contents:function(e){return v.nodeName(e,"iframe")?e.contentDocument||e.contentWindow.document:v.merge([],e.childNodes)}},function(e,t){v.fn[e]=function(n,r){var i=v.map(this,t,n);return nt.test(e)||(r=n),r&&typeof r=="string"&&(i=v.filter(r,i)),i=this.length>1&&!ot[e]?v.unique(i):i,this.length>1&&rt.test(e)&&(i=i.reverse()),this.pushStack(i,e,l.call(arguments).join(","))}}),v.extend({filter:function(e,t,n){return n&&(e=":not("+e+")"),t.length===1?v.find.matchesSelector(t[0],e)?[t[0]]:[]:v.find.matches(e,t)},dir:function(e,n,r){var i=[],s=e[n];while(s&&s.nodeType!==9&&(r===t||s.nodeType!==1||!v(s).is(r)))s.nodeType===1&&i.push(s),s=s[n];return i},sibling:function(e,t){var n=[];for(;e;e=e.nextSibling)e.nodeType===1&&e!==t&&n.push(e);return n}});var ct="abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video",ht=/ jQuery\d+="(?:null|\d+)"/g,pt=/^\s+/,dt=/<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi,vt=/<([\w:]+)/,mt=/<tbody/i,gt=/<|&#?\w+;/,yt=/<(?:script|style|link)/i,bt=/<(?:script|object|embed|option|style)/i,wt=new RegExp("<(?:"+ct+")[\\s/>]","i"),Et=/^(?:checkbox|radio)$/,St=/checked\s*(?:[^=]|=\s*.checked.)/i,xt=/\/(java|ecma)script/i,Tt=/^\s*<!(?:\[CDATA\[|\-\-)|[\]\-]{2}>\s*$/g,Nt={option:[1,"<select multiple='multiple'>","</select>"],legend:[1,"<fieldset>","</fieldset>"],thead:[1,"<table>","</table>"],tr:[2,"<table><tbody>","</tbody></table>"],td:[3,"<table><tbody><tr>","</tr></tbody></table>"],col:[2,"<table><tbody></tbody><colgroup>","</colgroup></table>"],area:[1,"<map>","</map>"],_default:[0,"",""]},Ct=lt(i),kt=Ct.appendChild(i.createElement("div"));Nt.optgroup=Nt.option,Nt.tbody=Nt.tfoot=Nt.colgroup=Nt.caption=Nt.thead,Nt.th=Nt.td,v.support.htmlSerialize||(Nt._default=[1,"X<div>","</div>"]),v.fn.extend({text:function(e){return v.access(this,function(e){return e===t?v.text(this):this.empty().append((this[0]&&this[0].ownerDocument||i).createTextNode(e))},null,e,arguments.length)},wrapAll:function(e){if(v.isFunction(e))return this.each(function(t){v(this).wrapAll(e.call(this,t))});if(this[0]){var t=v(e,this[0].ownerDocument).eq(0).clone(!0);this[0].parentNode&&t.insertBefore(this[0]),t.map(function(){var e=this;while(e.firstChild&&e.firstChild.nodeType===1)e=e.firstChild;return e}).append(this)}return this},wrapInner:function(e){return v.isFunction(e)?this.each(function(t){v(this).wrapInner(e.call(this,t))}):this.each(function(){var t=v(this),n=t.contents();n.length?n.wrapAll(e):t.append(e)})},wrap:function(e){var t=v.isFunction(e);return this.each(function(n){v(this).wrapAll(t?e.call(this,n):e)})},unwrap:function(){return this.parent().each(function(){v.nodeName(this,"body")||v(this).replaceWith(this.childNodes)}).end()},append:function(){return this.domManip(arguments,!0,function(e){(this.nodeType===1||this.nodeType===11)&&this.appendChild(e)})},prepend:function(){return this.domManip(arguments,!0,function(e){(this.nodeType===1||this.nodeType===11)&&this.insertBefore(e,this.firstChild)})},before:function(){if(!ut(this[0]))return this.domManip(arguments,!1,function(e){this.parentNode.insertBefore(e,this)});if(arguments.length){var e=v.clean(arguments);return this.pushStack(v.merge(e,this),"before",this.selector)}},after:function(){if(!ut(this[0]))return this.domManip(arguments,!1,function(e){this.parentNode.insertBefore(e,this.nextSibling)});if(arguments.length){var e=v.clean(arguments);return this.pushStack(v.merge(this,e),"after",this.selector)}},remove:function(e,t){var n,r=0;for(;(n=this[r])!=null;r++)if(!e||v.filter(e,[n]).length)!t&&n.nodeType===1&&(v.cleanData(n.getElementsByTagName("*")),v.cleanData([n])),n.parentNode&&n.parentNode.removeChild(n);return this},empty:function(){var e,t=0;for(;(e=this[t])!=null;t++){e.nodeType===1&&v.cleanData(e.getElementsByTagName("*"));while(e.firstChild)e.removeChild(e.firstChild)}return this},clone:function(e,t){return e=e==null?!1:e,t=t==null?e:t,this.map(function(){return v.clone(this,e,t)})},html:function(e){return v.access(this,function(e){var n=this[0]||{},r=0,i=this.length;if(e===t)return n.nodeType===1?n.innerHTML.replace(ht,""):t;if(typeof e=="string"&&!yt.test(e)&&(v.support.htmlSerialize||!wt.test(e))&&(v.support.leadingWhitespace||!pt.test(e))&&!Nt[(vt.exec(e)||["",""])[1].toLowerCase()]){e=e.replace(dt,"<$1></$2>");try{for(;r<i;r++)n=this[r]||{},n.nodeType===1&&(v.cleanData(n.getElementsByTagName("*")),n.innerHTML=e);n=0}catch(s){}}n&&this.empty().append(e)},null,e,arguments.length)},replaceWith:function(e){return ut(this[0])?this.length?this.pushStack(v(v.isFunction(e)?e():e),"replaceWith",e):this:v.isFunction(e)?this.each(function(t){var n=v(this),r=n.html();n.replaceWith(e.call(this,t,r))}):(typeof e!="string"&&(e=v(e).detach()),this.each(function(){var t=this.nextSibling,n=this.parentNode;v(this).remove(),t?v(t).before(e):v(n).append(e)}))},detach:function(e){return this.remove(e,!0)},domManip:function(e,n,r){e=[].concat.apply([],e);var i,s,o,u,a=0,f=e[0],l=[],c=this.length;if(!v.support.checkClone&&c>1&&typeof f=="string"&&St.test(f))return this.each(function(){v(this).domManip(e,n,r)});if(v.isFunction(f))return this.each(function(i){var s=v(this);e[0]=f.call(this,i,n?s.html():t),s.domManip(e,n,r)});if(this[0]){i=v.buildFragment(e,this,l),o=i.fragment,s=o.firstChild,o.childNodes.length===1&&(o=s);if(s){n=n&&v.nodeName(s,"tr");for(u=i.cacheable||c-1;a<c;a++)r.call(n&&v.nodeName(this[a],"table")?Lt(this[a],"tbody"):this[a],a===u?o:v.clone(o,!0,!0))}o=s=null,l.length&&v.each(l,function(e,t){t.src?v.ajax?v.ajax({url:t.src,type:"GET",dataType:"script",async:!1,global:!1,"throws":!0}):v.error("no ajax"):v.globalEval((t.text||t.textContent||t.innerHTML||"").replace(Tt,"")),t.parentNode&&t.parentNode.removeChild(t)})}return this}}),v.buildFragment=function(e,n,r){var s,o,u,a=e[0];return n=n||i,n=!n.nodeType&&n[0]||n,n=n.ownerDocument||n,e.length===1&&typeof a=="string"&&a.length<512&&n===i&&a.charAt(0)==="<"&&!bt.test(a)&&(v.support.checkClone||!St.test(a))&&(v.support.html5Clone||!wt.test(a))&&(o=!0,s=v.fragments[a],u=s!==t),s||(s=n.createDocumentFragment(),v.clean(e,n,s,r),o&&(v.fragments[a]=u&&s)),{fragment:s,cacheable:o}},v.fragments={},v.each({appendTo:"append",prependTo:"prepend",insertBefore:"before",insertAfter:"after",replaceAll:"replaceWith"},function(e,t){v.fn[e]=function(n){var r,i=0,s=[],o=v(n),u=o.length,a=this.length===1&&this[0].parentNode;if((a==null||a&&a.nodeType===11&&a.childNodes.length===1)&&u===1)return o[t](this[0]),this;for(;i<u;i++)r=(i>0?this.clone(!0):this).get(),v(o[i])[t](r),s=s.concat(r);return this.pushStack(s,e,o.selector)}}),v.extend({clone:function(e,t,n){var r,i,s,o;v.support.html5Clone||v.isXMLDoc(e)||!wt.test("<"+e.nodeName+">")?o=e.cloneNode(!0):(kt.innerHTML=e.outerHTML,kt.removeChild(o=kt.firstChild));if((!v.support.noCloneEvent||!v.support.noCloneChecked)&&(e.nodeType===1||e.nodeType===11)&&!v.isXMLDoc(e)){Ot(e,o),r=Mt(e),i=Mt(o);for(s=0;r[s];++s)i[s]&&Ot(r[s],i[s])}if(t){At(e,o);if(n){r=Mt(e),i=Mt(o);for(s=0;r[s];++s)At(r[s],i[s])}}return r=i=null,o},clean:function(e,t,n,r){var s,o,u,a,f,l,c,h,p,d,m,g,y=t===i&&Ct,b=[];if(!t||typeof t.createDocumentFragment=="undefined")t=i;for(s=0;(u=e[s])!=null;s++){typeof u=="number"&&(u+="");if(!u)continue;if(typeof u=="string")if(!gt.test(u))u=t.createTextNode(u);else{y=y||lt(t),c=t.createElement("div"),y.appendChild(c),u=u.replace(dt,"<$1></$2>"),a=(vt.exec(u)||["",""])[1].toLowerCase(),f=Nt[a]||Nt._default,l=f[0],c.innerHTML=f[1]+u+f[2];while(l--)c=c.lastChild;if(!v.support.tbody){h=mt.test(u),p=a==="table"&&!h?c.firstChild&&c.firstChild.childNodes:f[1]==="<table>"&&!h?c.childNodes:[];for(o=p.length-1;o>=0;--o)v.nodeName(p[o],"tbody")&&!p[o].childNodes.length&&p[o].parentNode.removeChild(p[o])}!v.support.leadingWhitespace&&pt.test(u)&&c.insertBefore(t.createTextNode(pt.exec(u)[0]),c.firstChild),u=c.childNodes,c.parentNode.removeChild(c)}u.nodeType?b.push(u):v.merge(b,u)}c&&(u=c=y=null);if(!v.support.appendChecked)for(s=0;(u=b[s])!=null;s++)v.nodeName(u,"input")?_t(u):typeof u.getElementsByTagName!="undefined"&&v.grep(u.getElementsByTagName("input"),_t);if(n){m=function(e){if(!e.type||xt.test(e.type))return r?r.push(e.parentNode?e.parentNode.removeChild(e):e):n.appendChild(e)};for(s=0;(u=b[s])!=null;s++)if(!v.nodeName(u,"script")||!m(u))n.appendChild(u),typeof u.getElementsByTagName!="undefined"&&(g=v.grep(v.merge([],u.getElementsByTagName("script")),m),b.splice.apply(b,[s+1,0].concat(g)),s+=g.length)}return b},cleanData:function(e,t){var n,r,i,s,o=0,u=v.expando,a=v.cache,f=v.support.deleteExpando,l=v.event.special;for(;(i=e[o])!=null;o++)if(t||v.acceptData(i)){r=i[u],n=r&&a[r];if(n){if(n.events)for(s in n.events)l[s]?v.event.remove(i,s):v.removeEvent(i,s,n.handle);a[r]&&(delete a[r],f?delete i[u]:i.removeAttribute?i.removeAttribute(u):i[u]=null,v.deletedIds.push(r))}}}}),function(){var e,t;v.uaMatch=function(e){e=e.toLowerCase();var t=/(chrome)[ \/]([\w.]+)/.exec(e)||/(webkit)[ \/]([\w.]+)/.exec(e)||/(opera)(?:.*version|)[ \/]([\w.]+)/.exec(e)||/(msie) ([\w.]+)/.exec(e)||e.indexOf("compatible")<0&&/(mozilla)(?:.*? rv:([\w.]+)|)/.exec(e)||[];return{browser:t[1]||"",version:t[2]||"0"}},e=v.uaMatch(o.userAgent),t={},e.browser&&(t[e.browser]=!0,t.version=e.version),t.chrome?t.webkit=!0:t.webkit&&(t.safari=!0),v.browser=t,v.sub=function(){function e(t,n){return new e.fn.init(t,n)}v.extend(!0,e,this),e.superclass=this,e.fn=e.prototype=this(),e.fn.constructor=e,e.sub=this.sub,e.fn.init=function(r,i){return i&&i instanceof v&&!(i instanceof e)&&(i=e(i)),v.fn.init.call(this,r,i,t)},e.fn.init.prototype=e.fn;var t=e(i);return e}}();var Dt,Pt,Ht,Bt=/alpha\([^)]*\)/i,jt=/opacity=([^)]*)/,Ft=/^(top|right|bottom|left)$/,It=/^(none|table(?!-c[ea]).+)/,qt=/^margin/,Rt=new RegExp("^("+m+")(.*)$","i"),Ut=new RegExp("^("+m+")(?!px)[a-z%]+$","i"),zt=new RegExp("^([-+])=("+m+")","i"),Wt={BODY:"block"},Xt={position:"absolute",visibility:"hidden",display:"block"},Vt={letterSpacing:0,fontWeight:400},$t=["Top","Right","Bottom","Left"],Jt=["Webkit","O","Moz","ms"],Kt=v.fn.toggle;v.fn.extend({css:function(e,n){return v.access(this,function(e,n,r){return r!==t?v.style(e,n,r):v.css(e,n)},e,n,arguments.length>1)},show:function(){return Yt(this,!0)},hide:function(){return Yt(this)},toggle:function(e,t){var n=typeof e=="boolean";return v.isFunction(e)&&v.isFunction(t)?Kt.apply(this,arguments):this.each(function(){(n?e:Gt(this))?v(this).show():v(this).hide()})}}),v.extend({cssHooks:{opacity:{get:function(e,t){if(t){var n=Dt(e,"opacity");return n===""?"1":n}}}},cssNumber:{fillOpacity:!0,fontWeight:!0,lineHeight:!0,opacity:!0,orphans:!0,widows:!0,zIndex:!0,zoom:!0},cssProps:{"float":v.support.cssFloat?"cssFloat":"styleFloat"},style:function(e,n,r,i){if(!e||e.nodeType===3||e.nodeType===8||!e.style)return;var s,o,u,a=v.camelCase(n),f=e.style;n=v.cssProps[a]||(v.cssProps[a]=Qt(f,a)),u=v.cssHooks[n]||v.cssHooks[a];if(r===t)return u&&"get"in u&&(s=u.get(e,!1,i))!==t?s:f[n];o=typeof r,o==="string"&&(s=zt.exec(r))&&(r=(s[1]+1)*s[2]+parseFloat(v.css(e,n)),o="number");if(r==null||o==="number"&&isNaN(r))return;o==="number"&&!v.cssNumber[a]&&(r+="px");if(!u||!("set"in u)||(r=u.set(e,r,i))!==t)try{f[n]=r}catch(l){}},css:function(e,n,r,i){var s,o,u,a=v.camelCase(n);return n=v.cssProps[a]||(v.cssProps[a]=Qt(e.style,a)),u=v.cssHooks[n]||v.cssHooks[a],u&&"get"in u&&(s=u.get(e,!0,i)),s===t&&(s=Dt(e,n)),s==="normal"&&n in Vt&&(s=Vt[n]),r||i!==t?(o=parseFloat(s),r||v.isNumeric(o)?o||0:s):s},swap:function(e,t,n){var r,i,s={};for(i in t)s[i]=e.style[i],e.style[i]=t[i];r=n.call(e);for(i in t)e.style[i]=s[i];return r}}),e.getComputedStyle?Dt=function(t,n){var r,i,s,o,u=e.getComputedStyle(t,null),a=t.style;return u&&(r=u.getPropertyValue(n)||u[n],r===""&&!v.contains(t.ownerDocument,t)&&(r=v.style(t,n)),Ut.test(r)&&qt.test(n)&&(i=a.width,s=a.minWidth,o=a.maxWidth,a.minWidth=a.maxWidth=a.width=r,r=u.width,a.width=i,a.minWidth=s,a.maxWidth=o)),r}:i.documentElement.currentStyle&&(Dt=function(e,t){var n,r,i=e.currentStyle&&e.currentStyle[t],s=e.style;return i==null&&s&&s[t]&&(i=s[t]),Ut.test(i)&&!Ft.test(t)&&(n=s.left,r=e.runtimeStyle&&e.runtimeStyle.left,r&&(e.runtimeStyle.left=e.currentStyle.left),s.left=t==="fontSize"?"1em":i,i=s.pixelLeft+"px",s.left=n,r&&(e.runtimeStyle.left=r)),i===""?"auto":i}),v.each(["height","width"],function(e,t){v.cssHooks[t]={get:function(e,n,r){if(n)return e.offsetWidth===0&&It.test(Dt(e,"display"))?v.swap(e,Xt,function(){return tn(e,t,r)}):tn(e,t,r)},set:function(e,n,r){return Zt(e,n,r?en(e,t,r,v.support.boxSizing&&v.css(e,"boxSizing")==="border-box"):0)}}}),v.support.opacity||(v.cssHooks.opacity={get:function(e,t){return jt.test((t&&e.currentStyle?e.currentStyle.filter:e.style.filter)||"")?.01*parseFloat(RegExp.$1)+"":t?"1":""},set:function(e,t){var n=e.style,r=e.currentStyle,i=v.isNumeric(t)?"alpha(opacity="+t*100+")":"",s=r&&r.filter||n.filter||"";n.zoom=1;if(t>=1&&v.trim(s.replace(Bt,""))===""&&n.removeAttribute){n.removeAttribute("filter");if(r&&!r.filter)return}n.filter=Bt.test(s)?s.replace(Bt,i):s+" "+i}}),v(function(){v.support.reliableMarginRight||(v.cssHooks.marginRight={get:function(e,t){return v.swap(e,{display:"inline-block"},function(){if(t)return Dt(e,"marginRight")})}}),!v.support.pixelPosition&&v.fn.position&&v.each(["top","left"],function(e,t){v.cssHooks[t]={get:function(e,n){if(n){var r=Dt(e,t);return Ut.test(r)?v(e).position()[t]+"px":r}}}})}),v.expr&&v.expr.filters&&(v.expr.filters.hidden=function(e){return e.offsetWidth===0&&e.offsetHeight===0||!v.support.reliableHiddenOffsets&&(e.style&&e.style.display||Dt(e,"display"))==="none"},v.expr.filters.visible=function(e){return!v.expr.filters.hidden(e)}),v.each({margin:"",padding:"",border:"Width"},function(e,t){v.cssHooks[e+t]={expand:function(n){var r,i=typeof n=="string"?n.split(" "):[n],s={};for(r=0;r<4;r++)s[e+$t[r]+t]=i[r]||i[r-2]||i[0];return s}},qt.test(e)||(v.cssHooks[e+t].set=Zt)});var rn=/%20/g,sn=/\[\]$/,on=/\r?\n/g,un=/^(?:color|date|datetime|datetime-local|email|hidden|month|number|password|range|search|tel|text|time|url|week)$/i,an=/^(?:select|textarea)/i;v.fn.extend({serialize:function(){return v.param(this.serializeArray())},serializeArray:function(){return this.map(function(){return this.elements?v.makeArray(this.elements):this}).filter(function(){return this.name&&!this.disabled&&(this.checked||an.test(this.nodeName)||un.test(this.type))}).map(function(e,t){var n=v(this).val();return n==null?null:v.isArray(n)?v.map(n,function(e,n){return{name:t.name,value:e.replace(on,"\r\n")}}):{name:t.name,value:n.replace(on,"\r\n")}}).get()}}),v.param=function(e,n){var r,i=[],s=function(e,t){t=v.isFunction(t)?t():t==null?"":t,i[i.length]=encodeURIComponent(e)+"="+encodeURIComponent(t)};n===t&&(n=v.ajaxSettings&&v.ajaxSettings.traditional);if(v.isArray(e)||e.jquery&&!v.isPlainObject(e))v.each(e,function(){s(this.name,this.value)});else for(r in e)fn(r,e[r],n,s);return i.join("&").replace(rn,"+")};var ln,cn,hn=/#.*$/,pn=/^(.*?):[ \t]*([^\r\n]*)\r?$/mg,dn=/^(?:about|app|app\-storage|.+\-extension|file|res|widget):$/,vn=/^(?:GET|HEAD)$/,mn=/^\/\//,gn=/\?/,yn=/<script\b[^<]*(?:(?!<\/script>)<[^<]*)*<\/script>/gi,bn=/([?&])_=[^&]*/,wn=/^([\w\+\.\-]+:)(?:\/\/([^\/?#:]*)(?::(\d+)|)|)/,En=v.fn.load,Sn={},xn={},Tn=["*/"]+["*"];try{cn=s.href}catch(Nn){cn=i.createElement("a"),cn.href="",cn=cn.href}ln=wn.exec(cn.toLowerCase())||[],v.fn.load=function(e,n,r){if(typeof e!="string"&&En)return En.apply(this,arguments);if(!this.length)return this;var i,s,o,u=this,a=e.indexOf(" ");return a>=0&&(i=e.slice(a,e.length),e=e.slice(0,a)),v.isFunction(n)?(r=n,n=t):n&&typeof n=="object"&&(s="POST"),v.ajax({url:e,type:s,dataType:"html",data:n,complete:function(e,t){r&&u.each(r,o||[e.responseText,t,e])}}).done(function(e){o=arguments,u.html(i?v("<div>").append(e.replace(yn,"")).find(i):e)}),this},v.each("ajaxStart ajaxStop ajaxComplete ajaxError ajaxSuccess ajaxSend".split(" "),function(e,t){v.fn[t]=function(e){return this.on(t,e)}}),v.each(["get","post"],function(e,n){v[n]=function(e,r,i,s){return v.isFunction(r)&&(s=s||i,i=r,r=t),v.ajax({type:n,url:e,data:r,success:i,dataType:s})}}),v.extend({getScript:function(e,n){return v.get(e,t,n,"script")},getJSON:function(e,t,n){return v.get(e,t,n,"json")},ajaxSetup:function(e,t){return t?Ln(e,v.ajaxSettings):(t=e,e=v.ajaxSettings),Ln(e,t),e},ajaxSettings:{url:cn,isLocal:dn.test(ln[1]),global:!0,type:"GET",contentType:"application/x-www-form-urlencoded; charset=UTF-8",processData:!0,async:!0,accepts:{xml:"application/xml, text/xml",html:"text/html",text:"text/plain",json:"application/json, text/javascript","*":Tn},contents:{xml:/xml/,html:/html/,json:/json/},responseFields:{xml:"responseXML",text:"responseText"},converters:{"* text":e.String,"text html":!0,"text json":v.parseJSON,"text xml":v.parseXML},flatOptions:{context:!0,url:!0}},ajaxPrefilter:Cn(Sn),ajaxTransport:Cn(xn),ajax:function(e,n){function T(e,n,s,a){var l,y,b,w,S,T=n;if(E===2)return;E=2,u&&clearTimeout(u),o=t,i=a||"",x.readyState=e>0?4:0,s&&(w=An(c,x,s));if(e>=200&&e<300||e===304)c.ifModified&&(S=x.getResponseHeader("Last-Modified"),S&&(v.lastModified[r]=S),S=x.getResponseHeader("Etag"),S&&(v.etag[r]=S)),e===304?(T="notmodified",l=!0):(l=On(c,w),T=l.state,y=l.data,b=l.error,l=!b);else{b=T;if(!T||e)T="error",e<0&&(e=0)}x.status=e,x.statusText=(n||T)+"",l?d.resolveWith(h,[y,T,x]):d.rejectWith(h,[x,T,b]),x.statusCode(g),g=t,f&&p.trigger("ajax"+(l?"Success":"Error"),[x,c,l?y:b]),m.fireWith(h,[x,T]),f&&(p.trigger("ajaxComplete",[x,c]),--v.active||v.event.trigger("ajaxStop"))}typeof e=="object"&&(n=e,e=t),n=n||{};var r,i,s,o,u,a,f,l,c=v.ajaxSetup({},n),h=c.context||c,p=h!==c&&(h.nodeType||h instanceof v)?v(h):v.event,d=v.Deferred(),m=v.Callbacks("once memory"),g=c.statusCode||{},b={},w={},E=0,S="canceled",x={readyState:0,setRequestHeader:function(e,t){if(!E){var n=e.toLowerCase();e=w[n]=w[n]||e,b[e]=t}return this},getAllResponseHeaders:function(){return E===2?i:null},getResponseHeader:function(e){var n;if(E===2){if(!s){s={};while(n=pn.exec(i))s[n[1].toLowerCase()]=n[2]}n=s[e.toLowerCase()]}return n===t?null:n},overrideMimeType:function(e){return E||(c.mimeType=e),this},abort:function(e){return e=e||S,o&&o.abort(e),T(0,e),this}};d.promise(x),x.success=x.done,x.error=x.fail,x.complete=m.add,x.statusCode=function(e){if(e){var t;if(E<2)for(t in e)g[t]=[g[t],e[t]];else t=e[x.status],x.always(t)}return this},c.url=((e||c.url)+"").replace(hn,"").replace(mn,ln[1]+"//"),c.dataTypes=v.trim(c.dataType||"*").toLowerCase().split(y),c.crossDomain==null&&(a=wn.exec(c.url.toLowerCase()),c.crossDomain=!(!a||a[1]===ln[1]&&a[2]===ln[2]&&(a[3]||(a[1]==="http:"?80:443))==(ln[3]||(ln[1]==="http:"?80:443)))),c.data&&c.processData&&typeof c.data!="string"&&(c.data=v.param(c.data,c.traditional)),kn(Sn,c,n,x);if(E===2)return x;f=c.global,c.type=c.type.toUpperCase(),c.hasContent=!vn.test(c.type),f&&v.active++===0&&v.event.trigger("ajaxStart");if(!c.hasContent){c.data&&(c.url+=(gn.test(c.url)?"&":"?")+c.data,delete c.data),r=c.url;if(c.cache===!1){var N=v.now(),C=c.url.replace(bn,"$1_="+N);c.url=C+(C===c.url?(gn.test(c.url)?"&":"?")+"_="+N:"")}}(c.data&&c.hasContent&&c.contentType!==!1||n.contentType)&&x.setRequestHeader("Content-Type",c.contentType),c.ifModified&&(r=r||c.url,v.lastModified[r]&&x.setRequestHeader("If-Modified-Since",v.lastModified[r]),v.etag[r]&&x.setRequestHeader("If-None-Match",v.etag[r])),x.setRequestHeader("Accept",c.dataTypes[0]&&c.accepts[c.dataTypes[0]]?c.accepts[c.dataTypes[0]]+(c.dataTypes[0]!=="*"?", "+Tn+"; q=0.01":""):c.accepts["*"]);for(l in c.headers)x.setRequestHeader(l,c.headers[l]);if(!c.beforeSend||c.beforeSend.call(h,x,c)!==!1&&E!==2){S="abort";for(l in{success:1,error:1,complete:1})x[l](c[l]);o=kn(xn,c,n,x);if(!o)T(-1,"No Transport");else{x.readyState=1,f&&p.trigger("ajaxSend",[x,c]),c.async&&c.timeout>0&&(u=setTimeout(function(){x.abort("timeout")},c.timeout));try{E=1,o.send(b,T)}catch(k){if(!(E<2))throw k;T(-1,k)}}return x}return x.abort()},active:0,lastModified:{},etag:{}});var Mn=[],_n=/\?/,Dn=/(=)\?(?=&|$)|\?\?/,Pn=v.now();v.ajaxSetup({jsonp:"callback",jsonpCallback:function(){var e=Mn.pop()||v.expando+"_"+Pn++;return this[e]=!0,e}}),v.ajaxPrefilter("json jsonp",function(n,r,i){var s,o,u,a=n.data,f=n.url,l=n.jsonp!==!1,c=l&&Dn.test(f),h=l&&!c&&typeof a=="string"&&!(n.contentType||"").indexOf("application/x-www-form-urlencoded")&&Dn.test(a);if(n.dataTypes[0]==="jsonp"||c||h)return s=n.jsonpCallback=v.isFunction(n.jsonpCallback)?n.jsonpCallback():n.jsonpCallback,o=e[s],c?n.url=f.replace(Dn,"$1"+s):h?n.data=a.replace(Dn,"$1"+s):l&&(n.url+=(_n.test(f)?"&":"?")+n.jsonp+"="+s),n.converters["script json"]=function(){return u||v.error(s+" was not called"),u[0]},n.dataTypes[0]="json",e[s]=function(){u=arguments},i.always(function(){e[s]=o,n[s]&&(n.jsonpCallback=r.jsonpCallback,Mn.push(s)),u&&v.isFunction(o)&&o(u[0]),u=o=t}),"script"}),v.ajaxSetup({accepts:{script:"text/javascript, application/javascript, application/ecmascript, application/x-ecmascript"},contents:{script:/javascript|ecmascript/},converters:{"text script":function(e){return v.globalEval(e),e}}}),v.ajaxPrefilter("script",function(e){e.cache===t&&(e.cache=!1),e.crossDomain&&(e.type="GET",e.global=!1)}),v.ajaxTransport("script",function(e){if(e.crossDomain){var n,r=i.head||i.getElementsByTagName("head")[0]||i.documentElement;return{send:function(s,o){n=i.createElement("script"),n.async="async",e.scriptCharset&&(n.charset=e.scriptCharset),n.src=e.url,n.onload=n.onreadystatechange=function(e,i){if(i||!n.readyState||/loaded|complete/.test(n.readyState))n.onload=n.onreadystatechange=null,r&&n.parentNode&&r.removeChild(n),n=t,i||o(200,"success")},r.insertBefore(n,r.firstChild)},abort:function(){n&&n.onload(0,1)}}}});var Hn,Bn=e.ActiveXObject?function(){for(var e in Hn)Hn[e](0,1)}:!1,jn=0;v.ajaxSettings.xhr=e.ActiveXObject?function(){return!this.isLocal&&Fn()||In()}:Fn,function(e){v.extend(v.support,{ajax:!!e,cors:!!e&&"withCredentials"in e})}(v.ajaxSettings.xhr()),v.support.ajax&&v.ajaxTransport(function(n){if(!n.crossDomain||v.support.cors){var r;return{send:function(i,s){var o,u,a=n.xhr();n.username?a.open(n.type,n.url,n.async,n.username,n.password):a.open(n.type,n.url,n.async);if(n.xhrFields)for(u in n.xhrFields)a[u]=n.xhrFields[u];n.mimeType&&a.overrideMimeType&&a.overrideMimeType(n.mimeType),!n.crossDomain&&!i["X-Requested-With"]&&(i["X-Requested-With"]="XMLHttpRequest");try{for(u in i)a.setRequestHeader(u,i[u])}catch(f){}a.send(n.hasContent&&n.data||null),r=function(e,i){var u,f,l,c,h;try{if(r&&(i||a.readyState===4)){r=t,o&&(a.onreadystatechange=v.noop,Bn&&delete Hn[o]);if(i)a.readyState!==4&&a.abort();else{u=a.status,l=a.getAllResponseHeaders(),c={},h=a.responseXML,h&&h.documentElement&&(c.xml=h);try{c.text=a.responseText}catch(p){}try{f=a.statusText}catch(p){f=""}!u&&n.isLocal&&!n.crossDomain?u=c.text?200:404:u===1223&&(u=204)}}}catch(d){i||s(-1,d)}c&&s(u,f,c,l)},n.async?a.readyState===4?setTimeout(r,0):(o=++jn,Bn&&(Hn||(Hn={},v(e).unload(Bn)),Hn[o]=r),a.onreadystatechange=r):r()},abort:function(){r&&r(0,1)}}}});var qn,Rn,Un=/^(?:toggle|show|hide)$/,zn=new RegExp("^(?:([-+])=|)("+m+")([a-z%]*)$","i"),Wn=/queueHooks$/,Xn=[Gn],Vn={"*":[function(e,t){var n,r,i=this.createTween(e,t),s=zn.exec(t),o=i.cur(),u=+o||0,a=1,f=20;if(s){n=+s[2],r=s[3]||(v.cssNumber[e]?"":"px");if(r!=="px"&&u){u=v.css(i.elem,e,!0)||n||1;do a=a||".5",u/=a,v.style(i.elem,e,u+r);while(a!==(a=i.cur()/o)&&a!==1&&--f)}i.unit=r,i.start=u,i.end=s[1]?u+(s[1]+1)*n:n}return i}]};v.Animation=v.extend(Kn,{tweener:function(e,t){v.isFunction(e)?(t=e,e=["*"]):e=e.split(" ");var n,r=0,i=e.length;for(;r<i;r++)n=e[r],Vn[n]=Vn[n]||[],Vn[n].unshift(t)},prefilter:function(e,t){t?Xn.unshift(e):Xn.push(e)}}),v.Tween=Yn,Yn.prototype={constructor:Yn,init:function(e,t,n,r,i,s){this.elem=e,this.prop=n,this.easing=i||"swing",this.options=t,this.start=this.now=this.cur(),this.end=r,this.unit=s||(v.cssNumber[n]?"":"px")},cur:function(){var e=Yn.propHooks[this.prop];return e&&e.get?e.get(this):Yn.propHooks._default.get(this)},run:function(e){var t,n=Yn.propHooks[this.prop];return this.options.duration?this.pos=t=v.easing[this.easing](e,this.options.duration*e,0,1,this.options.duration):this.pos=t=e,this.now=(this.end-this.start)*t+this.start,this.options.step&&this.options.step.call(this.elem,this.now,this),n&&n.set?n.set(this):Yn.propHooks._default.set(this),this}},Yn.prototype.init.prototype=Yn.prototype,Yn.propHooks={_default:{get:function(e){var t;return e.elem[e.prop]==null||!!e.elem.style&&e.elem.style[e.prop]!=null?(t=v.css(e.elem,e.prop,!1,""),!t||t==="auto"?0:t):e.elem[e.prop]},set:function(e){v.fx.step[e.prop]?v.fx.step[e.prop](e):e.elem.style&&(e.elem.style[v.cssProps[e.prop]]!=null||v.cssHooks[e.prop])?v.style(e.elem,e.prop,e.now+e.unit):e.elem[e.prop]=e.now}}},Yn.propHooks.scrollTop=Yn.propHooks.scrollLeft={set:function(e){e.elem.nodeType&&e.elem.parentNode&&(e.elem[e.prop]=e.now)}},v.each(["toggle","show","hide"],function(e,t){var n=v.fn[t];v.fn[t]=function(r,i,s){return r==null||typeof r=="boolean"||!e&&v.isFunction(r)&&v.isFunction(i)?n.apply(this,arguments):this.animate(Zn(t,!0),r,i,s)}}),v.fn.extend({fadeTo:function(e,t,n,r){return this.filter(Gt).css("opacity",0).show().end().animate({opacity:t},e,n,r)},animate:function(e,t,n,r){var i=v.isEmptyObject(e),s=v.speed(t,n,r),o=function(){var t=Kn(this,v.extend({},e),s);i&&t.stop(!0)};return i||s.queue===!1?this.each(o):this.queue(s.queue,o)},stop:function(e,n,r){var i=function(e){var t=e.stop;delete e.stop,t(r)};return typeof e!="string"&&(r=n,n=e,e=t),n&&e!==!1&&this.queue(e||"fx",[]),this.each(function(){var t=!0,n=e!=null&&e+"queueHooks",s=v.timers,o=v._data(this);if(n)o[n]&&o[n].stop&&i(o[n]);else for(n in o)o[n]&&o[n].stop&&Wn.test(n)&&i(o[n]);for(n=s.length;n--;)s[n].elem===this&&(e==null||s[n].queue===e)&&(s[n].anim.stop(r),t=!1,s.splice(n,1));(t||!r)&&v.dequeue(this,e)})}}),v.each({slideDown:Zn("show"),slideUp:Zn("hide"),slideToggle:Zn("toggle"),fadeIn:{opacity:"show"},fadeOut:{opacity:"hide"},fadeToggle:{opacity:"toggle"}},function(e,t){v.fn[e]=function(e,n,r){return this.animate(t,e,n,r)}}),v.speed=function(e,t,n){var r=e&&typeof e=="object"?v.extend({},e):{complete:n||!n&&t||v.isFunction(e)&&e,duration:e,easing:n&&t||t&&!v.isFunction(t)&&t};r.duration=v.fx.off?0:typeof r.duration=="number"?r.duration:r.duration in v.fx.speeds?v.fx.speeds[r.duration]:v.fx.speeds._default;if(r.queue==null||r.queue===!0)r.queue="fx";return r.old=r.complete,r.complete=function(){v.isFunction(r.old)&&r.old.call(this),r.queue&&v.dequeue(this,r.queue)},r},v.easing={linear:function(e){return e},swing:function(e){return.5-Math.cos(e*Math.PI)/2}},v.timers=[],v.fx=Yn.prototype.init,v.fx.tick=function(){var e,n=v.timers,r=0;qn=v.now();for(;r<n.length;r++)e=n[r],!e()&&n[r]===e&&n.splice(r--,1);n.length||v.fx.stop(),qn=t},v.fx.timer=function(e){e()&&v.timers.push(e)&&!Rn&&(Rn=setInterval(v.fx.tick,v.fx.interval))},v.fx.interval=13,v.fx.stop=function(){clearInterval(Rn),Rn=null},v.fx.speeds={slow:600,fast:200,_default:400},v.fx.step={},v.expr&&v.expr.filters&&(v.expr.filters.animated=function(e){return v.grep(v.timers,function(t){return e===t.elem}).length});var er=/^(?:body|html)$/i;v.fn.offset=function(e){if(arguments.length)return e===t?this:this.each(function(t){v.offset.setOffset(this,e,t)});var n,r,i,s,o,u,a,f={top:0,left:0},l=this[0],c=l&&l.ownerDocument;if(!c)return;return(r=c.body)===l?v.offset.bodyOffset(l):(n=c.documentElement,v.contains(n,l)?(typeof l.getBoundingClientRect!="undefined"&&(f=l.getBoundingClientRect()),i=tr(c),s=n.clientTop||r.clientTop||0,o=n.clientLeft||r.clientLeft||0,u=i.pageYOffset||n.scrollTop,a=i.pageXOffset||n.scrollLeft,{top:f.top+u-s,left:f.left+a-o}):f)},v.offset={bodyOffset:function(e){var t=e.offsetTop,n=e.offsetLeft;return v.support.doesNotIncludeMarginInBodyOffset&&(t+=parseFloat(v.css(e,"marginTop"))||0,n+=parseFloat(v.css(e,"marginLeft"))||0),{top:t,left:n}},setOffset:function(e,t,n){var r=v.css(e,"position");r==="static"&&(e.style.position="relative");var i=v(e),s=i.offset(),o=v.css(e,"top"),u=v.css(e,"left"),a=(r==="absolute"||r==="fixed")&&v.inArray("auto",[o,u])>-1,f={},l={},c,h;a?(l=i.position(),c=l.top,h=l.left):(c=parseFloat(o)||0,h=parseFloat(u)||0),v.isFunction(t)&&(t=t.call(e,n,s)),t.top!=null&&(f.top=t.top-s.top+c),t.left!=null&&(f.left=t.left-s.left+h),"using"in t?t.using.call(e,f):i.css(f)}},v.fn.extend({position:function(){if(!this[0])return;var e=this[0],t=this.offsetParent(),n=this.offset(),r=er.test(t[0].nodeName)?{top:0,left:0}:t.offset();return n.top-=parseFloat(v.css(e,"marginTop"))||0,n.left-=parseFloat(v.css(e,"marginLeft"))||0,r.top+=parseFloat(v.css(t[0],"borderTopWidth"))||0,r.left+=parseFloat(v.css(t[0],"borderLeftWidth"))||0,{top:n.top-r.top,left:n.left-r.left}},offsetParent:function(){return this.map(function(){var e=this.offsetParent||i.body;while(e&&!er.test(e.nodeName)&&v.css(e,"position")==="static")e=e.offsetParent;return e||i.body})}}),v.each({scrollLeft:"pageXOffset",scrollTop:"pageYOffset"},function(e,n){var r=/Y/.test(n);v.fn[e]=function(i){return v.access(this,function(e,i,s){var o=tr(e);if(s===t)return o?n in o?o[n]:o.document.documentElement[i]:e[i];o?o.scrollTo(r?v(o).scrollLeft():s,r?s:v(o).scrollTop()):e[i]=s},e,i,arguments.length,null)}}),v.each({Height:"height",Width:"width"},function(e,n){v.each({padding:"inner"+e,content:n,"":"outer"+e},function(r,i){v.fn[i]=function(i,s){var o=arguments.length&&(r||typeof i!="boolean"),u=r||(i===!0||s===!0?"margin":"border");return v.access(this,function(n,r,i){var s;return v.isWindow(n)?n.document.documentElement["client"+e]:n.nodeType===9?(s=n.documentElement,Math.max(n.body["scroll"+e],s["scroll"+e],n.body["offset"+e],s["offset"+e],s["client"+e])):i===t?v.css(n,r,i,u):v.style(n,r,i,u)},n,o?i:t,o,null)}})}),e.jQuery=e.$=v,typeof define=="function"&&define.amd&&define.amd.jQuery&&define("jquery",[],function(){return v})})(window);
+jQuery.noConflict(true);
+})();
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('jqueryPlugins',["jquery"], function ($) {
+  // This isn't really a "module" since it just patches jQuery itself
+
+  // FIX ME Animations TO DO
+  // walkthrough animations go here
+  // animate participant cursor and box popping in when they enter the session
+  // animate participant cursor and box popping out when they leave the session
+  // animate the participant cursor -> rotate down when they're down the page
+  $.fn.rotateCursorDown = function () {
+    $('svg').animate({borderSpacing: -150, opacity: 1}, {
+      step: function(now, fx) {
+        if (fx.prop == "borderSpacing") {
+          $(this).css('-webkit-transform', 'rotate('+now+'deg)')
+            .css('-moz-transform', 'rotate('+now+'deg)')
+            .css('-ms-transform', 'rotate('+now+'deg)')
+            .css('-o-transform', 'rotate('+now+'deg)')
+            .css('transform', 'rotate('+now+'deg)');
+        } else {
+          $(this).css(fx.prop, now);
+        }
+      },
+      duration: 500
+    }, 'linear').promise().then(function () {
+      this.css('-webkit-transform', '');
+      this.css('-moz-transform', '');
+      this.css('-ms-transform', '');
+      this.css('-o-transform', '');
+      this.css('transform', '');
+      this.css("opacity", "");
+    });
+  };
+
+  // animate the participant cursor -> rotate up when they're on the same frame as the user
+  $.fn.rotateCursorDown = function () {
+    $('.togetherjs-cursor svg').animate({borderSpacing: 0, opacity: 1}, {
+      step: function(now, fx) {
+        if (fx.prop == "borderSpacing") {
+          $(this).css('-webkit-transform', 'rotate('+now+'deg)')
+            .css('-moz-transform', 'rotate('+now+'deg)')
+            .css('-ms-transform', 'rotate('+now+'deg)')
+            .css('-o-transform', 'rotate('+now+'deg)')
+            .css('transform', 'rotate('+now+'deg)');
+        } else {
+          $(this).css(fx.prop, now);
+        }
+      },
+      duration: 500
+    }, 'linear').promise().then(function () {
+      this.css('-webkit-transform', '');
+      this.css('-moz-transform', '');
+      this.css('-ms-transform', '');
+      this.css('-o-transform', '');
+      this.css('transform', '');
+      this.css("opacity", "");
+    });
+  };
+
+  // Move notification when another notification slides in //
+
+
+  /* Pop in window from dock button: */
+  $.fn.popinWindow = function () {
+
+    //mobile popout window with no animation
+    if($.browser.mobile) {
+
+       //starting position
+        this.css({
+          left: "0px",
+          opacity: 1,
+          "zIndex": 8888
+        });
+
+        //starting position for arrow
+        $('#togetherjs-window-pointer-right').css({
+          left: "+=74px",
+          opacity: 1,
+          "zIndex": 8888
+        });
+
+        //animate arrow out
+        $('#togetherjs-window-pointer-right').animate({
+          opacity: 1,
+          left: "-=78px"
+        }, {
+          duration:60, easing:"linear"
+        });
+        $('#togetherjs-window-pointer-right').queue();
+
+        //bounce arrow back
+        $('#togetherjs-window-pointer-right').animate({
+          left:'+=4px'
+        }, {
+          duration:60, easing:"linear"
+        });
+
+        //animate window out
+        this.animate({
+          opacity: 1,
+          left: "0px"
+        }, {
+          duration:60, easing:"linear"
+        });
+        this.queue();
+
+        //bounce window back
+        this.animate({
+          left:'0px'
+        }, {
+          duration:60, easing:"linear"
+        });
+    }
+
+    else {
+
+      //starting position
+      this.css({
+        left: "+=74px",
+        opacity: 1,
+        "zIndex": 8888
+      });
+
+      //starting position for arrow
+      $('#togetherjs-window-pointer-right').css({
+        left: "+=74px",
+        opacity: 1,
+        "zIndex": 8888
+      });
+
+      //animate arrow out
+      $('#togetherjs-window-pointer-right').animate({
+        opacity: 1,
+        left: "-=78px"
+      }, {
+        duration:60, easing:"linear"
+      });
+      $('#togetherjs-window-pointer-right').queue();
+
+      //bounce arrow back
+      $('#togetherjs-window-pointer-right').animate({
+        left:'+=4px'
+      }, {
+        duration:60, easing:"linear"
+      });
+
+      //animate window out
+      this.animate({
+        opacity: 1,
+        left: "-=78px"
+      }, {
+        duration:60, easing:"linear"
+      });
+      this.queue();
+
+      //bounce window back
+      this.animate({
+        left:'+=4px'
+      }, {
+        duration:60, easing:"linear"
+      });
+
+    }
+
+  };
+
+  /* Slide in notification window: */
+  $.fn.slideIn = function () {
+    this.css({
+      //top: "240px",
+      left: "+=74px",
+      opacity: 0,
+      "zIndex": 8888
+    });
+    return this.animate({
+      "left": "-=74px",
+      opacity: 1,
+      "zIndex": 9999
+    }, "fast");
+  };
+
+  /* Used to fade away notification windows + flip the bottom of them out: */
+  $.fn.fadeOut = function () {
+    this.animate({borderSpacing: -90, opacity: 0.5}, {
+      step: function(now, fx) {
+        if (fx.prop == "borderSpacing") {
+          $(this).css('-webkit-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('-moz-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('-ms-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('-o-transform', 'perspective( 600px ) rotateX('+now+'deg)')
+            .css('transform', 'perspective( 600px ) rotateX('+now+'deg)');
+        } else {
+          $(this).css(fx.prop, now);
+        }
+      },
+      duration: 500
+    }, 'linear').promise().then(function () {
+      this.css('-webkit-transform', '');
+      this.css('-moz-transform', '');
+      this.css('-ms-transform', '');
+      this.css('-o-transform', '');
+      this.css('transform', '');
+      this.css("opacity", "");
+    });
+    return this;
+  };
+
+  /* used when user goes down to participant cursor location on screen */
+  $.fn.easeTo = function (y) {
+    return this.animate({
+      scrollTop: y
+    }, {
+      duration: 400,
+      easing: "swing"
+    });
+  };
+
+  // avatar animate in
+  $.fn.animateDockEntry = function () {
+    var height = this.height();
+    var width = this.width();
+    var backgroundSize = height + 4;
+    var margin = parseInt(this.css("marginLeft"), 10);
+
+    // set starting position CSS for avatar
+    this.css({
+      marginLeft: margin + width/2,
+      height: 0,
+      width: 0,
+      backgroundSize: "0 0"
+    });
+
+    var self = this;
+
+    //then animate avatar to the actual dimensions, and reset the values
+    this.animate({
+      marginLeft: margin,
+      height: height,
+      width: width,
+      backgroundSize: backgroundSize
+    }, {
+      duration: 600
+    }).promise().then(function () {
+      self.css({
+        marginLeft: "",
+        height: "",
+        width: "",
+        backgroundSize: ""
+      });
+    });
+    return this;
+  };
+
+  // avatar animate out, reverse of above
+  $.fn.animateDockExit = function () {
+
+    // get the current avatar dimenensions
+    var height = this.height();
+    var width = this.width();
+    var backgroundSize = height + 4;
+    var margin = parseInt(this.css("marginLeft"), 10);
+
+    //then animate avatar to shrink to nothing, and reset the values again
+    // FIXME this needs to animate from the CENTER
+    this.animate({
+      marginLeft: margin + width/2,
+      height: 0,
+      width: 0,
+      backgroundSize: "0 0",
+      opacity: 0
+    }, 600 );
+
+    return this;
+
+  };
+
+  $.fn.animateCursorEntry = function () {
+    // Make the cursor bubble pop in
+  };
+
+  // keyboard typing animation
+  $.fn.animateKeyboard = function () {
+    var one = this.find(".togetherjs-typing-ellipse-one");
+    var two = this.find(".togetherjs-typing-ellipse-two");
+    var three = this.find(".togetherjs-typing-ellipse-three");
+    var count = -1;
+    var run = (function () {
+      count = (count+1) % 4;
+      if (count === 0) {
+        one.css("opacity", 0.5);
+        two.css("opacity", 0.5);
+        three.css("opacity", 0.5);
+      } else if (count == 1) {
+        one.css("opacity", 1);
+      } else if (count == 2) {
+        two.css("opacity", 1);
+      } else { // count==3
+        three.css("opacity", 1);
+      }
+    }).bind(this);
+    run();
+    var interval = setInterval(run, 300);
+    this.data("animateKeyboard", interval);
+  };
+
+  $.fn.stopKeyboardAnimation = function () {
+    clearTimeout(this.data("animateKeyboard"));
+    this.data("animateKeyboard", null);
+  };
+
+  // FIXME: not sure if this is legit, but at least the modern mobile devices we
+  // care about should have this defined:
+  if (! $.browser) {
+    $.browser = {};
+  }
+  $.browser.mobile = window.orientation !== undefined;
+  if (navigator.userAgent.search(/mobile/i) != -1) {
+    // FIXME: At least on the Firefox OS simulator I need this
+    $.browser.mobile = true;
+  }
+
+  if ($.browser.mobile && window.matchMedia && ! window.matchMedia("screen and (max-screen-width: 480px)").matches) {
+    // FIXME: for Firefox OS simulator really:
+    document.body.className += " togetherjs-mobile-browser";
+  }
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('util',["jquery", "jqueryPlugins"], function ($) {
+  var util = {};
+
+  util.Deferred = $.Deferred;
+  TogetherJS.$ = $;
+
+  /* A simple class pattern, use like:
+
+    var Foo = util.Class({
+      constructor: function (a, b) {
+        init the class
+      },
+      otherMethod: ...
+    });
+
+  You can also give a superclass as the optional first argument.
+
+  Instantiation does not require "new"
+
+  */
+  util.Class = function (superClass, prototype) {
+    var a;
+    if (prototype === undefined) {
+      prototype = superClass;
+    } else {
+      if (superClass.prototype) {
+        superClass = superClass.prototype;
+      }
+      var newPrototype = Object.create(superClass);
+      for (a in prototype) {
+        if (prototype.hasOwnProperty(a)) {
+          newPrototype[a] = prototype[a];
+        }
+      }
+      prototype = newPrototype;
+    }
+    var ClassObject = function () {
+      var obj = Object.create(prototype);
+      obj.constructor.apply(obj, arguments);
+      obj.constructor = ClassObject;
+      return obj;
+    };
+    ClassObject.prototype = prototype;
+    if (prototype.constructor.name) {
+      ClassObject.className = prototype.constructor.name;
+      ClassObject.toString = function () {
+        return '[Class ' + this.className + ']';
+      };
+    }
+    if (prototype.classMethods) {
+      for (a in prototype.classMethods) {
+        if (prototype.classMethods.hasOwnProperty(a)) {
+          ClassObject[a] = prototype.classMethods[a];
+        }
+      }
+    }
+    return ClassObject;
+  };
+
+  /* Extends obj with other, or copies obj if no other is given. */
+  util.extend = TogetherJS._extend;
+
+  util.forEachAttr = function (obj, callback, context) {
+    context = context || obj;
+    for (var a in obj) {
+      if (obj.hasOwnProperty(a)) {
+        callback.call(context, obj[a], a);
+      }
+    }
+  };
+
+  /* Trim whitespace from a string */
+  util.trim = function trim(s) {
+    return s.replace(/^\s+/, "").replace(/\s+$/, "");
+  };
+
+  /* Convert a string into something safe to use as an HTML class name */
+  util.safeClassName = function safeClassName(name) {
+    return name.replace(/[^a-zA-Z0-9_\-]/g, "_") || "class";
+  };
+
+  util.AssertionError = function (message) {
+    if (! this instanceof util.AssertionError) {
+      return new util.AssertionError(message);
+    }
+    this.message = message;
+    this.name = "AssertionError";
+  };
+  util.AssertionError.prototype = Error.prototype;
+
+  util.assert = function (cond) {
+    if (! cond) {
+      var args = ["Assertion error:"].concat(Array.prototype.slice.call(arguments, 1));
+      console.error.apply(console, args);
+      if (console.trace) {
+        console.trace();
+      }
+      throw new util.AssertionError(args.join(" "));
+    }
+  };
+
+  /* Generates a random ID */
+  util.generateId = function (length) {
+    length = length || 10;
+    var letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV0123456789';
+    var s = '';
+    for (var i=0; i<length; i++) {
+      s += letters.charAt(Math.floor(Math.random() * letters.length));
+    }
+    return s;
+  };
+
+  util.pickRandom = function (array) {
+    return array[Math.floor(Math.random() * array.length)];
+  };
+
+  util.mixinEvents = TogetherJS._mixinEvents;
+
+  util.Module = util.Class({
+    constructor: function (name) {
+      this._name = name;
+    },
+    toString: function () {
+      return '[Module ' + this._name + ']';
+    }
+  });
+
+  util.blobToBase64 = function (blob) {
+    // Oh this is just terrible
+    var binary = '';
+    var bytes = new Uint8Array(blob);
+    var len = bytes.byteLength;
+    for (var i=0; i<len; i++) {
+      binary += String.fromCharCode(bytes[i]);
+    }
+    return btoa(binary);
+  };
+
+  util.truncateCommonDomain = function (url, base) {
+    /* Remove the scheme and domain from url, if it matches the scheme and domain
+       of base */
+    if (! base) {
+      return url;
+    }
+    var regex = /^https?:\/\/[^\/]*/i;
+    var match = regex.exec(url);
+    var matchBase = regex.exec(base);
+    if (match && matchBase && match[0] == matchBase[0]) {
+      // There is a common scheme and domain
+      return url.substr(match[0].length);
+    }
+    return url;
+  };
+
+  util.makeUrlAbsolute = function (url, base) {
+    if (url.search(/^(http|https|ws|wss):/i) === 0) {
+      // Absolute URL
+      return url;
+    }
+    if (url.search(/^\/\/[^\/]/) === 0) {
+      var scheme = (/^(http|https|ws|wss):/i).exec(base);
+      util.assert(scheme, "No scheme on base URL", base);
+      return scheme[1] + ":" + url;
+    }
+    if (url.search(/^\//) === 0) {
+      var domain = (/^(http|https|ws|wss):\/\/[^\/]+/i).exec(base);
+      util.assert(domain, "No scheme/domain on base URL", base);
+      return domain[0] + url;
+    }
+    var last = (/[^\/]+$/).exec(base);
+    util.assert(last, "Does not appear to be a URL?", base);
+    var lastBase = base.substr(0, last.index);
+    return lastBase + url;
+  };
+
+  util.assertValidUrl = function (url) {
+    /* This does some simple assertions that the url is valid:
+       - it must be a string
+       - it must be http(s)://... or data:...
+       - it must not contain a space, quotation, or close paren
+    */
+    util.assert(typeof url == "string", "URLs must be a string:", url);
+    util.assert(url.search(/^(http:\/\/|https:\/\/|\/\/|data:)/i) === 0,
+                "URL must have an http, https, data, or // scheme:", url);
+    util.assert(url.search(/[\)\'\"\ ]/) === -1,
+                "URLs cannot contain ), ', \", or spaces:", JSON.stringify(url));
+  };
+
+  util.resolver = function (deferred, func) {
+    util.assert(deferred.then, "Bad deferred:", deferred);
+    util.assert(typeof func == "function", "Not a function:", func);
+    return function () {
+      var result;
+      try {
+        result = func.apply(this, arguments);
+      } catch (e) {
+        deferred.reject(e);
+        throw e;
+      }
+      if (result && result.then) {
+        result.then(function () {
+          deferred.resolveWith(this, arguments);
+        }, function () {
+          deferred.rejectWith(this, arguments);
+        });
+        // FIXME: doesn't pass progress through
+      } else if (result === undefined) {
+        deferred.resolve();
+      } else {
+        deferred.resolve(result);
+      }
+      return result;
+    };
+  };
+
+  /* Detects if a value is a promise.  Right now the presence of a
+     `.then()` method is the best we can do.
+  */
+  util.isPromise = function (obj) {
+    return typeof obj == "object" && obj.then;
+  };
+
+  /* Makes a value into a promise, by returning an already-resolved
+     promise if a non-promise objectx is given.
+  */
+  util.makePromise = function (obj) {
+    if (util.isPromise(obj)) {
+      return obj;
+    } else {
+      return $.Deferred(function (def) {
+        def.resolve(obj);
+      });
+    }
+  };
+
+  /* Resolves several promises (the promises are the arguments to the function)
+     or the first argument may be an array of promises.
+
+     Returns a promise that will resolve with the results of all the
+     promises.  If any promise fails then the returned promise fails.
+
+     FIXME: if a promise has more than one return value (like with
+     promise.resolve(a, b)) then the latter arguments will be lost.
+     */
+  util.resolveMany = function () {
+    var args;
+    var oneArg = false;
+    if (arguments.length == 1 && Array.isArray(arguments[0])) {
+      oneArg = true;
+      args = arguments[0];
+    } else {
+      args = Array.prototype.slice.call(arguments);
+    }
+    return util.Deferred(function (def) {
+      var count = args.length;
+      if (! count) {
+        def.resolve();
+        return;
+      }
+      var allResults = [];
+      var anyError = false;
+      args.forEach(function (arg, index) {
+        arg.then(function (result) {
+          allResults[index] = result;
+          count--;
+          check();
+        }, function (error) {
+          allResults[index] = error;
+          anyError = true;
+          count--;
+          check();
+        });
+      });
+      function check() {
+        if (! count) {
+          if (anyError) {
+            if (oneArg) {
+              def.reject(allResults);
+            } else {
+              def.reject.apply(def, allResults);
+            }
+          } else {
+            if (oneArg) {
+              def.resolve(allResults);
+            } else {
+              def.resolve.apply(def, allResults);
+            }
+          }
+        }
+      }
+    });
+  };
+
+  util.readFileImage = function (el) {
+    return util.Deferred(function (def) {
+      var reader = new FileReader();
+      reader.onload = function () {
+        def.resolve("data:image/jpeg;base64," + util.blobToBase64(this.result));
+      };
+      reader.onerror = function () {
+        def.reject(this.error);
+      };
+      reader.readAsArrayBuffer(el.files[0]);
+    });
+  };
+
+  util.matchElement = function(el, selector) {
+    var res = selector;
+    if (selector === true || ! selector) {
+      return !!selector;
+    }
+    try {
+      return $(el).is(selector);
+    } catch (e) {
+      console.warn("Bad selector:", selector, "error:", e);
+      return false;
+    }
+
+  };
+
+  util.testExpose = function (objs) {
+    if (typeof TogetherJSTestSpy == "undefined") {
+      return;
+    }
+    util.forEachAttr(objs, function (value, attr) {
+      TogetherJSTestSpy[attr] = value;
+    });
+  };
+
+  return util;
+});
+
+define('analytics',["util"], function (util) {
+  var analytics = util.Module("analytics");
+
+  analytics.activate = function () {
+    var enable = TogetherJS.config.get("enableAnalytics");
+    var code = TogetherJS.config.get("analyticsCode");
+    TogetherJS.config.close("enableAnalytics");
+    TogetherJS.config.close("analyticsCode");
+    if (! (enable && code)) {
+      return;
+    }
+    // This is intended to be global:
+    var gaq = window._gaq || [];
+    gaq.push(["_setAccount", code]);
+    gaq.push(['_setDomainName', location.hostname]);
+    gaq.push(["_trackPageview"]);
+    window._gaq = gaq;
+
+    (function() {
+      var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+      ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+      var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+    })();
+  };
+
+  return analytics;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Channel abstraction.  Supported channels:
+
+- WebSocket to an address
+- postMessage between windows
+
+In the future:
+
+- XMLHttpRequest to a server (with some form of queuing)
+
+The interface:
+
+  channel = new ChannelName(parameters)
+
+The instantiation is specific to the kind of channel
+
+Methods:
+
+  onmessage: set to function (jsonData)
+  rawdata: set to true if you want onmessage to receive raw string data
+  onclose: set to function ()
+  send: function (string or jsonData)
+  close: function ()
+
+.send() will encode the data if it is not a string.
+
+(should I include readyState as an attribute?)
+
+Channels must accept messages immediately, caching if the connection
+is not fully established yet.
+
+*/
+
+define('channels',["util"], function (util) {
+
+var channels = util.Module("channels");
+/* Subclasses must define:
+
+- ._send(string)
+- ._setupConnection()
+- ._ready()
+- .close() (and must set this.closed to true)
+
+And must call:
+
+- ._flush() on open
+- ._incoming(string) on incoming message
+- onclose() (not onmessage - instead _incoming)
+- emit("close")
+*/
+
+var AbstractChannel = util.mixinEvents({
+  onmessage: null,
+  rawdata: false,
+  onclose: null,
+  closed: false,
+
+  baseConstructor: function () {
+    this._buffer = [];
+    this._setupConnection();
+  },
+
+  send: function (data) {
+    if (this.closed) {
+      throw 'Cannot send to a closed connection';
+    }
+    if (typeof data != "string") {
+      data = JSON.stringify(data);
+    }
+    if (! this._ready()) {
+      this._buffer.push(data);
+      return;
+    }
+    this._send(data);
+  },
+
+  _flush: function () {
+    for (var i=0; i<this._buffer.length; i++) {
+      this._send(this._buffer[i]);
+    }
+    this._buffer = [];
+  },
+
+  _incoming: function (data) {
+    if (! this.rawdata) {
+      try {
+        data = JSON.parse(data);
+      } catch (e) {
+        console.error("Got invalid JSON data:", data.substr(0, 40));
+        throw e;
+      }
+    }
+    if (this.onmessage) {
+      this.onmessage(data);
+    }
+    this.emit("message", data);
+  }
+
+});
+
+
+channels.WebSocketChannel = util.Class(AbstractChannel, {
+
+  constructor: function (address) {
+    if (address.search(/^https?:/i) === 0) {
+      address = address.replace(/^http/i, 'ws');
+    }
+    this.address = address;
+    this.socket = null;
+    this._reopening = false;
+    this._lastConnectTime = 0;
+    this._backoff = 0;
+    this.baseConstructor();
+  },
+
+  backoffTime: 50, // Milliseconds to add to each reconnect time
+  maxBackoffTime: 1500,
+  backoffDetection: 2000, // Amount of time since last connection attempt that shows we need to back off
+
+  toString: function () {
+    var s = '[WebSocketChannel to ' + this.address;
+    if (! this.socket) {
+      s += ' (socket unopened)';
+    } else {
+      s += ' readyState: ' + this.socket.readyState;
+    }
+    if (this.closed) {
+      s += ' CLOSED';
+    }
+    return s + ']';
+  },
+
+  close: function () {
+    this.closed = true;
+    if (this.socket) {
+      // socket.onclose will call this.onclose:
+      this.socket.close();
+    } else {
+      if (this.onclose) {
+        this.onclose();
+      }
+      this.emit("close");
+    }
+  },
+
+  _send: function (data) {
+    this.socket.send(data);
+  },
+
+  _ready: function () {
+    return this.socket && this.socket.readyState == this.socket.OPEN;
+  },
+
+  _setupConnection: function () {
+    if (this.closed) {
+      return;
+    }
+    this._lastConnectTime = Date.now();
+    this.socket = new WebSocket(this.address);
+    this.socket.onopen = (function () {
+      this._flush();
+      this._reopening = false;
+    }).bind(this);
+    this.socket.onclose = (function (event) {
+      this.socket = null;
+      var method = "error";
+      if (event.wasClean) {
+        // FIXME: should I even log clean closes?
+        method = "log";
+      }
+      console[method]('WebSocket close', event.wasClean ? 'clean' : 'unclean',
+                      'code:', event.code, 'reason:', event.reason || 'none');
+      if (! this.closed) {
+        this._reopening = true;
+        if (Date.now() - this._lastConnectTime > this.backoffDetection) {
+          this._backoff = 0;
+        } else {
+          this._backoff++;
+        }
+        var time = Math.min(this._backoff * this.backoffTime, this.maxBackoffTime);
+        setTimeout((function () {
+          this._setupConnection();
+        }).bind(this), time);
+      }
+    }).bind(this);
+    this.socket.onmessage = (function (event) {
+      this._incoming(event.data);
+    }).bind(this);
+    this.socket.onerror = (function (event) {
+      console.error('WebSocket error:', event.data);
+    }).bind(this);
+  }
+
+});
+
+
+/* Sends TO a window or iframe */
+channels.PostMessageChannel = util.Class(AbstractChannel, {
+  _pingPollPeriod: 100, // milliseconds
+  _pingPollIncrease: 100, // +100 milliseconds for each failure
+  _pingMax: 2000, // up to a max of 2000 milliseconds
+
+  constructor: function (win, expectedOrigin) {
+    this.expectedOrigin = expectedOrigin;
+    this._pingReceived = false;
+    this._receiveMessage = this._receiveMessage.bind(this);
+    if (win) {
+      this.bindWindow(win, true);
+    }
+    this._pingFailures = 0;
+    this.baseConstructor();
+  },
+
+  toString: function () {
+    var s = '[PostMessageChannel';
+    if (this.window) {
+      s += ' to window ' + this.window;
+    } else {
+      s += ' not bound to a window';
+    }
+    if (this.window && ! this._pingReceived) {
+      s += ' still establishing';
+    }
+    return s + ']';
+  },
+
+  bindWindow: function (win, noSetup) {
+    if (this.window) {
+      this.close();
+      // Though we deinitialized everything, we aren't exactly closed:
+      this.closed = false;
+    }
+    if (win && win.contentWindow) {
+      win = win.contentWindow;
+    }
+    this.window = win;
+    // FIXME: The distinction between this.window and window seems unimportant
+    // in the case of postMessage
+    var w = this.window;
+    // In a Content context we add the listener to the local window
+    // object, but in the addon context we add the listener to some
+    // other window, like the one we were given:
+    if (typeof window != "undefined") {
+      w = window;
+    }
+    w.addEventListener("message", this._receiveMessage, false);
+    if (! noSetup) {
+      this._setupConnection();
+    }
+  },
+
+  _send: function (data) {
+    this.window.postMessage(data, this.expectedOrigin || "*");
+  },
+
+  _ready: function () {
+    return this.window && this._pingReceived;
+  },
+
+  _setupConnection: function () {
+    if (this.closed || this._pingReceived || (! this.window)) {
+      return;
+    }
+    this._pingFailures++;
+    this._send("hello");
+    // We'll keep sending ping messages until we get a reply
+    var time = this._pingPollPeriod + (this._pingPollIncrease * this._pingFailures);
+    time = time > this._pingPollMax ? this._pingPollMax : time;
+    this._pingTimeout = setTimeout(this._setupConnection.bind(this), time);
+  },
+
+  _receiveMessage: function (event) {
+    if (event.source !== this.window) {
+      return;
+    }
+    if (this.expectedOrigin && event.origin != this.expectedOrigin) {
+      console.info("Expected message from", this.expectedOrigin,
+                   "but got message from", event.origin);
+      return;
+    }
+    if (! this.expectedOrigin) {
+      this.expectedOrigin = event.origin;
+    }
+    if (event.data == "hello") {
+      this._pingReceived = true;
+      if (this._pingTimeout) {
+        clearTimeout(this._pingTimeout);
+        this._pingTimeout = null;
+      }
+      this._flush();
+      return;
+    }
+    this._incoming(event.data);
+  },
+
+  close: function () {
+    this.closed = true;
+    this._pingReceived = false;
+    if (this._pingTimeout) {
+      clearTimeout(this._pingTimeout);
+    }
+    window.removeEventListener("message", this._receiveMessage, false);
+    if (this.onclose) {
+      this.onclose();
+    }
+    this.emit("close");
+  }
+
+});
+
+
+/* Handles message FROM an exterior window/parent */
+channels.PostMessageIncomingChannel = util.Class(AbstractChannel, {
+
+  constructor: function (expectedOrigin) {
+    this.source = null;
+    this.expectedOrigin = expectedOrigin;
+    this._receiveMessage = this._receiveMessage.bind(this);
+    window.addEventListener("message", this._receiveMessage, false);
+    this.baseConstructor();
+  },
+
+  toString: function () {
+    var s = '[PostMessageIncomingChannel';
+    if (this.source) {
+      s += ' bound to source ' + s;
+    } else {
+      s += ' awaiting source';
+    }
+    return s + ']';
+  },
+
+  _send: function (data) {
+    this.source.postMessage(data, this.expectedOrigin);
+  },
+
+  _ready: function () {
+    return !!this.source;
+  },
+
+  _setupConnection: function () {
+  },
+
+  _receiveMessage: function (event) {
+    if (this.expectedOrigin && this.expectedOrigin != "*" &&
+        event.origin != this.expectedOrigin) {
+      // FIXME: Maybe not worth mentioning?
+      console.info("Expected message from", this.expectedOrigin,
+                   "but got message from", event.origin);
+      return;
+    }
+    if (! this.expectedOrigin) {
+      this.expectedOrigin = event.origin;
+    }
+    if (! this.source) {
+      this.source = event.source;
+    }
+    if (event.data == "hello") {
+      // Just a ping
+      this.source.postMessage("hello", this.expectedOrigin);
+      return;
+    }
+    this._incoming(event.data);
+  },
+
+  close: function () {
+    this.closed = true;
+    window.removeEventListener("message", this._receiveMessage, false);
+    if (this._pingTimeout) {
+      clearTimeout(this._pingTimeout);
+    }
+    if (this.onclose) {
+      this.onclose();
+    }
+    this.emit("close");
+  }
+
+});
+
+channels.Router = util.Class(util.mixinEvents({
+
+  constructor: function (channel) {
+    this._channelMessage = this._channelMessage.bind(this);
+    this._channelClosed = this._channelClosed.bind(this);
+    this._routes = Object.create(null);
+    if (channel) {
+      this.bindChannel(channel);
+    }
+  },
+
+  bindChannel: function (channel) {
+    if (this.channel) {
+      this.channel.removeListener("message", this._channelMessage);
+      this.channel.removeListener("close", this._channelClosed);
+    }
+    this.channel = channel;
+    this.channel.on("message", this._channelMessage.bind(this));
+    this.channel.on("close", this._channelClosed.bind(this));
+  },
+
+  _channelMessage: function (msg) {
+    if (msg.type == "route") {
+      var id = msg.routeId;
+      var route = this._routes[id];
+      if (! route) {
+        console.warn("No route with the id", id);
+        return;
+      }
+      if (msg.close) {
+        this._closeRoute(route.id);
+      } else {
+        if (route.onmessage) {
+          route.onmessage(msg.message);
+        }
+        route.emit("message", msg.message);
+      }
+    }
+  },
+
+  _channelClosed: function () {
+    for (var id in this._routes) {
+      this._closeRoute(id);
+    }
+  },
+
+  _closeRoute: function (id) {
+    var route = this._routes[id];
+    if (route.onclose) {
+      route.onclose();
+    }
+    route.emit("close");
+    delete this._routes[id];
+  },
+
+  makeRoute: function (id) {
+    id = id || util.generateId();
+    var route = Route(this, id);
+    this._routes[id] = route;
+    return route;
+  }
+}));
+
+var Route = util.Class(util.mixinEvents({
+  constructor: function (router, id) {
+    this.router = router;
+    this.id = id;
+  },
+
+  send: function (msg) {
+    this.router.channel.send({
+      type: "route",
+      routeId: this.id,
+      message: msg
+    });
+  },
+
+  close: function () {
+    if (this.router._routes[this.id] !== this) {
+      // This route instance has been overwritten, so ignore
+      return;
+    }
+    delete this.router._routes[this.id];
+  }
+
+}));
+
+return channels;
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('storage',["util"], function (util) {
+  var assert = util.assert;
+  var Deferred = util.Deferred;
+  var DEFAULT_SETTINGS = {
+    name: "",
+    defaultName: "",
+    avatar: null,
+    stickyShare: null,
+    color: null,
+    seenIntroDialog: false,
+    seenWalkthrough: false,
+    dontShowRtcInfo: false
+  };
+
+  var DEBUG_STORAGE = false;
+
+  var Storage = util.Class({
+    constructor: function (name, storage, prefix) {
+      this.name = name;
+      this.storage = storage;
+      this.prefix = prefix;
+    },
+
+    get: function (key, defaultValue) {
+      var self = this;
+      return Deferred(function (def) {
+        // Strictly this isn't necessary, but eventually I want to move to something more
+        // async for the storage, and this simulates that much better.
+        setTimeout(util.resolver(def, function () {
+          key = self.prefix + key;
+          var value = self.storage.getItem(key);
+          if (! value) {
+            value = defaultValue;
+            if (DEBUG_STORAGE) {
+              console.debug("Get storage", key, "defaults to", value);
+            }
+          } else {
+            value = JSON.parse(value);
+            if (DEBUG_STORAGE) {
+              console.debug("Get storage", key, "=", value);
+            }
+          }
+          return value;
+        }));
+      });
+    },
+
+    set: function (key, value) {
+      var self = this;
+      if (value !== undefined) {
+        value = JSON.stringify(value);
+      }
+      return Deferred(function (def) {
+        key = self.prefix + key;
+        if (value === undefined) {
+          self.storage.removeItem(key);
+          if (DEBUG_STORAGE) {
+            console.debug("Delete storage", key);
+          }
+        } else {
+          self.storage.setItem(key, value);
+          if (DEBUG_STORAGE) {
+            console.debug("Set storage", key, value);
+          }
+        }
+        setTimeout(def.resolve);
+      });
+    },
+
+    clear: function () {
+      var self = this;
+      var promises = [];
+      return Deferred((function (def) {
+        this.keys().then(function (keys) {
+          keys.forEach(function (key) {
+            // FIXME: technically we're ignoring the promise returned by all
+            // these sets:
+            promises.push(self.set(key, undefined));
+          });
+          util.resolveMany(promises).then(function () {
+            def.resolve();
+          });
+        });
+      }).bind(this));
+    },
+
+    keys: function (prefix, excludePrefix) {
+      // Returns a list of keys, potentially with the given prefix
+      var self = this;
+      return Deferred(function (def) {
+        setTimeout(util.resolver(def, function () {
+          prefix = prefix || "";
+          var result = [];
+          for (var i = 0; i < self.storage.length; i++) {
+            var key = self.storage.key(i);
+            if (key.indexOf(self.prefix + prefix) === 0) {
+              var shortKey = key.substr(self.prefix.length);
+              if (excludePrefix) {
+                shortKey = shortKey.substr(prefix.length);
+              }
+              result.push(shortKey);
+            }
+          }
+          return result;
+        }));
+      });
+    },
+
+    toString: function () {
+      return '[storage for ' + this.name + ']';
+    }
+
+  });
+
+  var namePrefix = TogetherJS.config.get("storagePrefix");
+  TogetherJS.config.close("storagePrefix");
+
+  var storage = Storage('localStorage', localStorage, namePrefix + ".");
+
+  storage.settings = util.mixinEvents({
+    defaults: DEFAULT_SETTINGS,
+
+    get: function (name) {
+      assert(storage.settings.defaults.hasOwnProperty(name), "Unknown setting:", name);
+      return storage.get("settings." + name, storage.settings.defaults[name]);
+    },
+
+    set: function (name, value) {
+      assert(storage.settings.defaults.hasOwnProperty(name), "Unknown setting:", name);
+      return storage.set("settings." + name, value);
+    }
+
+  });
+
+  storage.tab = Storage('sessionStorage', sessionStorage, namePrefix + "-session.");
+
+  return storage;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('session',["require", "util", "channels", "jquery", "storage"], function (require, util, channels, $, storage) {
+
+  var DEBUG = true;
+
+  // This is the amount of time in which a hello-back must be received after a hello
+  // for us to respect a URL change:
+  var HELLO_BACK_CUTOFF = 1500;
+
+  var session = util.mixinEvents(util.Module("session"));
+  var assert = util.assert;
+
+  // We will load this module later (there's a circular import):
+  var peers;
+
+  // This is the hub we connect to:
+  session.shareId = null;
+  // This is the ID that identifies this client:
+  session.clientId = null;
+  session.router = channels.Router();
+  // Indicates if TogetherJS has just started (not continuing from a saved session):
+  session.firstRun = false;
+
+  // This is the key we use for localStorage:
+  var localStoragePrefix = "togetherjs.";
+  // This is the channel to the hub:
+  var channel = null;
+
+  // Setting, essentially global:
+  session.AVATAR_SIZE = 90;
+
+  var MAX_SESSION_AGE = 30*24*60*60*1000; // 30 days
+
+  /****************************************
+   * URLs
+   */
+  var includeHashInUrl = TogetherJS.config.get("includeHashInUrl");
+  TogetherJS.config.close("includeHashInUrl");
+  var currentUrl = (location.href + "").replace(/\#.*$/, "");
+  if (includeHashInUrl) {
+    currentUrl = location.href;
+  }
+
+  session.hubUrl = function (id) {
+    id = id || session.shareId;
+    assert(id, "URL cannot be resolved before TogetherJS.shareId has been initialized");
+    TogetherJS.config.close("hubBase");
+    var hubBase = TogetherJS.config.get("hubBase");
+    return hubBase.replace(/\/*$/, "") + "/hub/" + id;
+  };
+
+  session.shareUrl = function () {
+    assert(session.shareId, "Attempted to access shareUrl() before shareId is set");
+    var hash = location.hash;
+    var m = /\?[^#]*/.exec(location.href);
+    var query = "";
+    if (m) {
+      query = m[0];
+    }
+    hash = hash.replace(/&?togetherjs-[a-zA-Z0-9]+/, "");
+    hash = hash || "#";
+    return location.protocol + "//" + location.host + location.pathname + query +
+           hash + "&togetherjs=" + session.shareId;
+  };
+
+  session.recordUrl = function () {
+    assert(session.shareId);
+    var url = TogetherJS.baseUrl.replace(/\/*$/, "") + "/togetherjs/recorder.html";
+    url += "#&togetherjs=" + session.shareId + "&hubBase=" + TogetherJS.config.get("hubBase");
+    return url;
+  };
+
+  /* location.href without the hash */
+  session.currentUrl = function () {
+    if (includeHashInUrl) {
+      return location.href;
+    } else {
+      return location.href.replace(/#.*/, "");
+    }
+  };
+
+  /****************************************
+   * Message handling/dispatching
+   */
+
+  session.hub = util.mixinEvents({});
+
+  var IGNORE_MESSAGES = TogetherJS.config.get("ignoreMessages");
+  if (IGNORE_MESSAGES === true) {
+    DEBUG = false;
+    IGNORE_MESSAGES = [];
+  }
+  // These are messages sent by clients who aren't "part" of the TogetherJS session:
+  var MESSAGES_WITHOUT_CLIENTID = ["who", "invite", "init-connection"];
+
+  // We ignore incoming messages from the channel until this is true:
+  var readyForMessages = false;
+
+  function openChannel() {
+    assert(! channel, "Attempt to re-open channel");
+    console.info("Connecting to", session.hubUrl(), location.href);
+    var c = channels.WebSocketChannel(session.hubUrl());
+    c.onmessage = function (msg) {
+      if (! readyForMessages) {
+        if (DEBUG) {
+          console.info("In (but ignored for being early):", msg);
+        }
+        return;
+      }
+      if (DEBUG && IGNORE_MESSAGES.indexOf(msg.type) == -1) {
+        console.info("In:", msg);
+      }
+      if (! peers) {
+        // We're getting messages before everything is fully initialized
+        console.warn("Message received before all modules loaded (ignoring):", msg);
+        return;
+      }
+      if ((! msg.clientId) && MESSAGES_WITHOUT_CLIENTID.indexOf(msg.type) == -1) {
+        console.warn("Got message without clientId, where clientId is required", msg);
+        return;
+      }
+      if (msg.clientId) {
+        msg.peer = peers.getPeer(msg.clientId, msg);
+      }
+      if (msg.type == "hello" || msg.type == "hello-back" || msg.type == "peer-update") {
+        // We do this here to make sure this is run before any other
+        // hello handlers:
+        msg.peer.updateFromHello(msg);
+      }
+      if (msg.peer) {
+        msg.sameUrl = msg.peer.url == currentUrl;
+        if (!msg.peer.isSelf) {
+          msg.peer.updateMessageDate(msg);
+        }
+      }
+      session.hub.emit(msg.type, msg);
+      TogetherJS._onmessage(msg);
+    };
+    channel = c;
+    session.router.bindChannel(channel);
+  }
+
+  session.send = function (msg) {
+    if (DEBUG && IGNORE_MESSAGES.indexOf(msg.type) == -1) {
+      console.info("Send:", msg);
+    }
+    msg.clientId = session.clientId;
+    channel.send(msg);
+  };
+
+  session.appSend = function (msg) {
+    var type = msg.type;
+    if (type.search(/^togetherjs\./) === 0) {
+      type = type.substr("togetherjs.".length);
+    } else if (type.search(/^app\./) === -1) {
+      type = "app." + type;
+    }
+    msg.type = type;
+    session.send(msg);
+  };
+
+  /****************************************
+   * Standard message responses
+   */
+
+  /* Always say hello back, and keep track of peers: */
+  session.hub.on("hello hello-back", function (msg) {
+    if (msg.type == "hello") {
+      sendHello(true);
+    }
+    if (session.isClient && (! msg.isClient) &&
+        session.firstRun && session.timeHelloSent &&
+        Date.now() - session.timeHelloSent < HELLO_BACK_CUTOFF) {
+      processFirstHello(msg);
+    }
+  });
+
+  session.hub.on("who", function (msg) {
+    sendHello(true);
+  });
+
+  function processFirstHello(msg) {
+    if (! msg.sameUrl) {
+      var url = msg.url;
+      if (msg.urlHash) {
+        url += msg.urlHash;
+      }
+      require("ui").showUrlChangeMessage(msg.peer, url);
+      location.href = url;
+    }
+  }
+
+  session.timeHelloSent = null;
+
+  function sendHello(helloBack) {
+    var msg = session.makeHelloMessage(helloBack);
+    if (! helloBack) {
+      session.timeHelloSent = Date.now();
+      peers.Self.url = msg.url;
+    }
+    session.send(msg);
+  }
+
+  session.makeHelloMessage = function (helloBack) {
+    var msg = {
+      name: peers.Self.name || peers.Self.defaultName,
+      avatar: peers.Self.avatar,
+      color: peers.Self.color,
+      url: session.currentUrl(),
+      urlHash: location.hash,
+      // FIXME: titles update, we should track those changes:
+      title: document.title,
+      rtcSupported: session.RTCSupported,
+      isClient: session.isClient
+    };
+    if (helloBack) {
+      msg.type = "hello-back";
+    } else {
+      msg.type = "hello";
+      msg.clientVersion = TogetherJS.version;
+    }
+    if (! TogetherJS.startup.continued) {
+      msg.starting = true;
+    }
+    // This is a chance for other modules to effect the hello message:
+    session.emit("prepare-hello", msg);
+    return msg;
+  };
+  /****************************************
+   * Lifecycle (start and end)
+   */
+
+  // These are Javascript files that implement features, and so must
+  // be injected at runtime because they aren't pulled in naturally
+  // via define().
+  // ui must be the first item:
+  var features = ["peers", "ui", "chat", "webrtc", "cursor", "startup", "videos", "forms", "visibilityApi", "youtubeVideos"];
+
+  function getRoomName(prefix, maxSize) {
+    var findRoom = TogetherJS.config.get("hubBase").replace(/\/*$/, "") + "/findroom";
+    return $.ajax({
+      url: findRoom,
+      dataType: "json",
+      data: {prefix: prefix, max: maxSize}
+    }).then(function (resp) {
+      return resp.name;
+    });
+  }
+
+  function initIdentityId() {
+    return util.Deferred(function (def) {
+      if (session.identityId) {
+        def.resolve();
+        return;
+      }
+      storage.get("identityId").then(function (identityId) {
+        if (! identityId) {
+          identityId = util.generateId();
+          storage.set("identityId", identityId);
+        }
+        session.identityId = identityId;
+        // We don't actually have to wait for the set to succede, so
+        // long as session.identityId is set
+        def.resolve();
+      });
+    });
+  }
+
+  initIdentityId.done = initIdentityId();
+
+  function initShareId() {
+    return util.Deferred(function (def) {
+      var hash = location.hash;
+      var shareId = session.shareId;
+      var isClient = true;
+      var set = true;
+      var sessionId;
+      session.firstRun = ! TogetherJS.startup.continued;
+      if (! shareId) {
+        if (TogetherJS.startup._joinShareId) {
+          // Like, below, this *also* means we got the shareId from the hash
+          // (in togetherjs.js):
+          shareId = TogetherJS.startup._joinShareId;
+        }
+      }
+      if (! shareId) {
+        // FIXME: I'm not sure if this will ever happen, because togetherjs.js should
+        // handle it
+        var m = /&?togetherjs=([^&]*)/.exec(hash);
+        if (m) {
+          isClient = ! m[1];
+          shareId = m[2];
+          var newHash = hash.substr(0, m.index) + hash.substr(m.index + m[0].length);
+          location.hash = newHash;
+        }
+      }
+      return storage.tab.get("status").then(function (saved) {
+        var findRoom = TogetherJS.config.get("findRoom");
+        TogetherJS.config.close("findRoom");
+        if (findRoom && saved && findRoom != saved.shareId) {
+          console.info("Ignoring findRoom in lieu of continued session");
+        } else if (findRoom && TogetherJS.startup._joinShareId) {
+          console.info("Ignoring findRoom in lieu of explicit invite to session");
+        }
+        if (findRoom && typeof findRoom == "string" && (! saved) && (! TogetherJS.startup._joinShareId)) {
+          isClient = true;
+          shareId = findRoom;
+          sessionId = util.generateId();
+        } else if (findRoom && (! saved) && (! TogetherJS.startup._joinShareId)) {
+          assert(findRoom.prefix && typeof findRoom.prefix == "string", "Bad findRoom.prefix", findRoom);
+          assert(findRoom.max && typeof findRoom.max == "number" && findRoom.max > 0,
+                 "Bad findRoom.max", findRoom);
+          sessionId = util.generateId();
+          if (findRoom.prefix.search(/[^a-zA-Z0-9]/) != -1) {
+            console.warn("Bad value for findRoom.prefix:", JSON.stringify(findRoom.prefix));
+          }
+          getRoomName(findRoom.prefix, findRoom.max).then(function (shareId) {
+            // FIXME: duplicates code below:
+            session.clientId = session.identityId + "." + sessionId;
+            storage.tab.set("status", {reason: "joined", shareId: shareId, running: true, date: Date.now(), sessionId: sessionId});
+            session.isClient = true;
+            session.shareId = shareId;
+            session.emit("shareId");
+            def.resolve(session.shareId);
+          });
+          return;
+        } else if (TogetherJS.startup._launch) {
+          if (saved) {
+            isClient = saved.reason == "joined";
+            if (! shareId) {
+              shareId = saved.shareId;
+            }
+            sessionId = saved.sessionId;
+          } else {
+            isClient = TogetherJS.startup.reason == "joined";
+            assert(! sessionId);
+            sessionId = util.generateId();
+          }
+          if (! shareId) {
+            shareId = util.generateId();
+          }
+        } else if (saved) {
+          isClient = saved.reason == "joined";
+          TogetherJS.startup.reason = saved.reason;
+          TogetherJS.startup.continued = true;
+          shareId = saved.shareId;
+          sessionId = saved.sessionId;
+          // The only case when we don't need to set the storage status again is when
+          // we're already set to be running
+          set = ! saved.running;
+        } else {
+          throw new util.AssertionError("No saved status, and no startup._launch request; why did TogetherJS start?");
+        }
+        assert(session.identityId);
+        session.clientId = session.identityId + "." + sessionId;
+        if (set) {
+          storage.tab.set("status", {reason: TogetherJS.startup.reason, shareId: shareId, running: true, date: Date.now(), sessionId: sessionId});
+        }
+        session.isClient = isClient;
+        session.shareId = shareId;
+        session.emit("shareId");
+        def.resolve(session.shareId);
+      });
+    });
+  }
+
+  function initStartTarget() {
+    var id;
+    if (TogetherJS.startup.button) {
+      id = TogetherJS.startup.button.id;
+      if (id) {
+        storage.set("startTarget", id);
+      }
+      return;
+    }
+    storage.get("startTarget").then(function (id) {
+      var el = document.getElementById(id);
+      if (el) {
+        TogetherJS.startup.button = el;
+      }
+    });
+  }
+  session.start = function () {
+    initStartTarget();
+    initIdentityId().then(function () {
+      initShareId().then(function () {
+        readyForMessages = false;
+        openChannel();
+        require(["ui"], function (ui) {
+          TogetherJS.running = true;
+          ui.prepareUI();
+          require(features, function () {
+            $(function () {
+              peers = require("peers");
+              var startup = require("startup");
+              session.emit("start");
+              session.once("ui-ready", function () {
+                readyForMessages = true;
+                startup.start();
+              });
+              ui.activateUI();
+              TogetherJS.config.close("enableAnalytics");
+              if (TogetherJS.config.get("enableAnalytics")) {
+                require(["analytics"], function (analytics) {
+                  analytics.activate();
+                });
+              }
+              peers._SelfLoaded.then(function () {
+                sendHello(false);
+              });
+              TogetherJS.emit("ready");
+            });
+          });
+        });
+      });
+    });
+  };
+
+  session.close = function (reason) {
+    TogetherJS.running = false;
+    var msg = {type: "bye"};
+    if (reason) {
+      msg.reason = reason;
+    }
+    session.send(msg);
+    session.emit("close");
+    var name = window.name;
+    storage.tab.get("status").then(function (saved) {
+      if (! saved) {
+        console.warn("No session information saved in", "status." + name);
+      } else {
+        saved.running = false;
+        saved.date = Date.now();
+        storage.tab.set("status", saved);
+      }
+      channel.close();
+      channel = null;
+      session.shareId = null;
+      session.emit("shareId");
+      TogetherJS.emit("close");
+      TogetherJS._teardown();
+    });
+  };
+
+  session.on("start", function () {
+    $(window).on("resize", resizeEvent);
+    if (includeHashInUrl) {
+      $(window).on("hashchange", hashchangeEvent);
+    }
+  });
+
+  session.on("close", function () {
+    $(window).off("resize", resizeEvent);
+    if (includeHashInUrl) {
+      $(window).off("hashchange", hashchangeEvent);
+    }
+  });
+
+  function hashchangeEvent() {
+    // needed because when message arives from peer this variable will be checked to
+    // decide weather to show actions or not
+    sendHello(false);
+  }
+
+  function resizeEvent() {
+    session.emit("resize");
+  }
+
+  if (TogetherJS.startup._launch) {
+    setTimeout(session.start);
+  }
+
+  util.testExpose({
+    getChannel: function () {
+      return channel;
+    }
+  });
+
+  return session;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// FIXME: maybe it would be better to dynamically assemble the first
+// argument to define() here to include the localized module:
+define('templates',["util", "require"], function (util, require) {
+  var assert = util.assert;
+
+  function clean(t) {
+    // Removes <% /* ... */ %> comments:
+    t = t.replace(/[<][%]\s*\/\*[\S\s\r\n]*\*\/\s*[%][>]/, "");
+    t = util.trim(t);
+    t = t.replace(/http:\/\/localhost:8080/g, TogetherJS.baseUrl);
+    t = t.replace(/TOOL_NAME/g, '<span class="togetherjs-tool-name">TogetherJS</span>');
+    t = t.replace(/SITE_NAME/g, '<strong class="togetherjs-site-name">[site name]</strong>');
+    t = t.replace(/TOOL_SITE_LINK/g, '<a href="https://togetherjs.com/" target="_blank"><span class="togetherjs-tool-name">TogetherJS</span></a>');
+    return t;
+  }
+
+  var lang = TogetherJS.getConfig("lang") || "en-US";
+  var moduleName = "templates-" + lang;
+  var templatesLang;
+  require([moduleName], function (mod) {
+    templatesLang = mod;
+  });
+
+  return function (resourceName) {
+    // Sometimes require([moduleName]) doesn't return even after the
+    // module has been loaded, but this sync version of require() will
+    // pick up the module in that case:
+    if (! templatesLang) {
+      try {
+        templatesLang = require(moduleName);
+      } catch (e) {
+        console.warn("Error requiring module:", e);
+      }
+    }
+    assert(templatesLang, "Templates not yet loaded");
+    return clean(templatesLang[resourceName]);
+  };
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('peers',["util", "session", "storage", "require", "templates"], function (util, session, storage, require, templates) {
+  var peers = util.Module("peers");
+  var assert = util.assert;
+  var CHECK_ACTIVITY_INTERVAL = 10*1000; // Every 10 seconds see if someone has gone idle
+  var IDLE_TIME = 3*60*1000; // Idle time is 3 minutes
+  var TAB_IDLE_TIME = 2*60*1000; // When you tab away, after two minutes you'll say you are idle
+  var BYE_TIME = 10*60*1000; // After 10 minutes of inactivity the person is considered to be "gone"
+
+  var ui;
+  require(["ui"], function (uiModule) {
+    ui = uiModule;
+  });
+
+  var DEFAULT_NICKNAMES = templates("names").split(/,\s*/g);
+  var Peer = util.Class({
+
+    isSelf: false,
+
+    constructor: function (id, attrs) {
+      attrs = attrs || {};
+      assert(id);
+      assert(! Peer.peers[id]);
+      this.id = id;
+      this.identityId = attrs.identityId || null;
+      this.status = attrs.status || "live";
+      this.idle = attrs.status || "active";
+      this.name = attrs.name || null;
+      this.avatar = attrs.avatar || null;
+      this.color = attrs.color || "#00FF00";
+      this.view = ui.PeerView(this);
+      this.lastMessageDate = 0;
+      this.following = attrs.following || false;
+      Peer.peers[id] = this;
+      var joined = attrs.joined || false;
+      if (attrs.fromHelloMessage) {
+        this.updateFromHello(attrs.fromHelloMessage);
+        if (attrs.fromHelloMessage.type == "hello") {
+          joined = true;
+        }
+      }
+      peers.emit("new-peer", this);
+      if (joined) {
+        this.view.notifyJoined();
+      }
+      this.view.update();
+    },
+
+    repr: function () {
+      return "Peer(" + JSON.stringify(this.id) + ")";
+    },
+
+    serialize: function () {
+      return {
+        id: this.id,
+        status: this.status,
+        idle: this.idle,
+        url: this.url,
+        hash: this.hash,
+        title: this.title,
+        identityId: this.identityId,
+        rtcSupported: this.rtcSupported,
+        name: this.name,
+        avatar: this.avatar,
+        color: this.color,
+        following: this.following
+      };
+    },
+
+    destroy: function () {
+      this.view.destroy();
+      delete Peer.peers[this.id];
+    },
+
+    updateMessageDate: function (msg) {
+      if (this.idle == "inactive") {
+        this.update({idle: "active"});
+      }
+      if (this.status == "bye") {
+        this.unbye();
+      }
+      this.lastMessageDate = Date.now();
+    },
+
+    updateFromHello: function (msg) {
+      var urlUpdated = false;
+      var activeRTC = false;
+      var identityUpdated = false;
+      if (msg.url && msg.url != this.url) {
+        this.url = msg.url;
+        this.hash = null;
+        this.title = null;
+        urlUpdated = true;
+      }
+      if (msg.hash != this.hash) {
+        this.hash = msg.urlHash;
+        urlUpdated = true;
+      }
+      if (msg.title != this.title) {
+        this.title = msg.title;
+        urlUpdated = true;
+      }
+      if (msg.rtcSupported !== undefined) {
+        this.rtcSupported = msg.rtcSupported;
+      }
+      if (msg.identityId !== undefined) {
+        this.identityId = msg.identityId;
+      }
+      if (msg.name && msg.name != this.name) {
+        this.name = msg.name;
+        identityUpdated = true;
+      }
+      if (msg.avatar && msg.avatar != this.avatar) {
+        util.assertValidUrl(msg.avatar);
+        this.avatar = msg.avatar;
+        identityUpdated = true;
+      }
+      if (msg.color && msg.color != this.color) {
+        this.color = msg.color;
+        identityUpdated = true;
+      }
+      if (msg.isClient !== undefined) {
+        this.isCreator = ! msg.isClient;
+      }
+      if (this.status != "live") {
+        this.status = "live";
+        peers.emit("status-updated", this);
+      }
+      if (this.idle != "active") {
+        this.idle = "active";
+        peers.emit("idle-updated", this);
+      }
+      if (msg.rtcSupported) {
+        peers.emit("rtc-supported", this);
+      }
+      if (urlUpdated) {
+        peers.emit("url-updated", this);
+      }
+      if (identityUpdated) {
+        peers.emit("identity-updated", this);
+      }
+      // FIXME: I can't decide if this is the only time we need to emit
+      // this message (and not .update() or other methods)
+      if (this.following) {
+        session.emit("follow-peer", this);
+      }
+    },
+
+    update: function (attrs) {
+      // FIXME: should probably test that only a couple attributes are settable
+      // particularly status and idle
+      if (attrs.idle) {
+        this.idle = attrs.idle;
+      }
+      if (attrs.status) {
+        this.status = attrs.status;
+      }
+      this.view.update();
+    },
+
+    className: function (prefix) {
+      prefix = prefix || "";
+      return prefix + util.safeClassName(this.id);
+    },
+
+    bye: function () {
+      if (this.status != "bye") {
+        this.status = "bye";
+        peers.emit("status-updated", this);
+      }
+      this.view.update();
+    },
+
+    unbye: function () {
+      if (this.status == "bye") {
+        this.status = "live";
+        peers.emit("status-updated", this);
+      }
+      this.view.update();
+    },
+
+    nudge: function () {
+      session.send({
+        type: "url-change-nudge",
+        url: location.href,
+        to: this.id
+      });
+    },
+
+    follow: function () {
+      if (this.following) {
+        return;
+      }
+      peers.getAllPeers().forEach(function (p) {
+        if (p.following) {
+          p.unfollow();
+        }
+      });
+      this.following = true;
+      // We have to make sure we remember this, even if we change URLs:
+      storeSerialization();
+      this.view.update();
+      session.emit("follow-peer", this);
+    },
+
+    unfollow: function () {
+      this.following = false;
+      storeSerialization();
+      this.view.update();
+    }
+
+  });
+
+  // FIXME: I can't decide where this should actually go, seems weird
+  // that it is emitted and handled in the same module
+  session.on("follow-peer", function (peer) {
+    if (peer.url != session.currentUrl()) {
+      var url = peer.url;
+      if (peer.urlHash) {
+        url += peer.urlHash;
+      }
+      location.href = url;
+    }
+  });
+
+  Peer.peers = {};
+
+  Peer.deserialize = function (obj) {
+    obj.fromStorage = true;
+    var peer = Peer(obj.id, obj);
+  };
+
+  peers.Self = undefined;
+
+  session.on("start", function () {
+    if (peers.Self) {
+      return;
+    }
+    /* Same interface as Peer, represents oneself (local user): */
+    peers.Self = util.mixinEvents({
+      isSelf: true,
+      id: session.clientId,
+      identityId: session.identityId,
+      status: "live",
+      idle: "active",
+      name: null,
+      avatar: null,
+      color: null,
+      defaultName: null,
+      loaded: false,
+      isCreator: ! session.isClient,
+
+      update: function (attrs) {
+        var updatePeers = false;
+        var updateIdle = false;
+        var updateMsg = {type: "peer-update"};
+        if (typeof attrs.name == "string" && attrs.name != this.name) {
+          this.name = attrs.name;
+          updateMsg.name = this.name;
+          if (! attrs.fromLoad) {
+            storage.settings.set("name", this.name);
+            updatePeers = true;
+          }
+        }
+        if (attrs.avatar && attrs.avatar != this.avatar) {
+          util.assertValidUrl(attrs.avatar);
+          this.avatar = attrs.avatar;
+          updateMsg.avatar = this.avatar;
+          if (! attrs.fromLoad) {
+            storage.settings.set("avatar", this.avatar);
+            updatePeers = true;
+          }
+        }
+        if (attrs.color && attrs.color != this.color) {
+          this.color = attrs.color;
+          updateMsg.color = this.color;
+          if (! attrs.fromLoad) {
+            storage.settings.set("color", this.color);
+            updatePeers = true;
+          }
+        }
+        if (attrs.defaultName && attrs.defaultName != this.defaultName) {
+          this.defaultName = attrs.defaultName;
+          if (! attrs.fromLoad) {
+            storage.settings.set("defaultName", this.defaultName);
+            updatePeers = true;
+          }
+        }
+        if (attrs.status && attrs.status != this.status) {
+          this.status = attrs.status;
+          peers.emit("status-updated", this);
+        }
+        if (attrs.idle && attrs.idle != this.idle) {
+          this.idle = attrs.idle;
+          updateIdle = true;
+          peers.emit("idle-updated", this);
+        }
+        this.view.update();
+        if (updatePeers && ! attrs.fromLoad) {
+          session.emit("self-updated");
+          session.send(updateMsg);
+        }
+        if (updateIdle && ! attrs.fromLoad) {
+          session.send({
+            type: "idle-status",
+            idle: this.idle
+          });
+        }
+      },
+
+      className: function (prefix) {
+        prefix = prefix || "";
+        return prefix + "self";
+      },
+
+      _loadFromSettings: function () {
+        return util.resolveMany(
+          storage.settings.get("name"),
+          storage.settings.get("avatar"),
+          storage.settings.get("defaultName"),
+          storage.settings.get("color")).then((function (name, avatar, defaultName, color) {
+            if (! defaultName) {
+              defaultName = util.pickRandom(DEFAULT_NICKNAMES);
+
+              storage.settings.set("defaultName", defaultName);
+            }
+            if (! color) {
+              color = Math.floor(Math.random() * 0xffffff).toString(16);
+              while (color.length < 6) {
+                color = "0" + color;
+              }
+              color = "#" + color;
+              storage.settings.set("color", color);
+            }
+            if (! avatar) {
+              avatar = TogetherJS.baseUrl + "/togetherjs/images/default-avatar.png";
+            }
+            this.update({
+              name: name,
+              avatar: avatar,
+              defaultName: defaultName,
+              color: color,
+              fromLoad: true
+            });
+            peers._SelfLoaded.resolve();
+          }).bind(this)); // FIXME: ignoring error
+      },
+
+      _loadFromApp: function () {
+        // FIXME: I wonder if these should be optionally functions?
+        // We could test typeof==function to distinguish between a getter and a concrete value
+        var getUserName = TogetherJS.config.get("getUserName");
+        var getUserColor = TogetherJS.config.get("getUserColor");
+        var getUserAvatar = TogetherJS.config.get("getUserAvatar");
+        var name, color, avatar;
+        if (getUserName) {
+          if (typeof getUserName == "string") {
+            name = getUserName;
+          } else {
+            name = getUserName();
+          }
+          if (name && typeof name != "string") {
+            // FIXME: test for HTML safe?  Not that we require it, but
+            // <>'s are probably a sign something is wrong.
+            console.warn("Error in getUserName(): should return a string (got", name, ")");
+            name = null;
+          }
+        }
+        if (getUserColor) {
+          if (typeof getUserColor == "string") {
+            color = getUserColor;
+          } else {
+            color = getUserColor();
+          }
+          if (color && typeof color != "string") {
+            // FIXME: would be nice to test for color-ness here.
+            console.warn("Error in getUserColor(): should return a string (got", color, ")");
+            color = null;
+          }
+        }
+        if (getUserAvatar) {
+          if (typeof getUserAvatar == "string") {
+            avatar = getUserAvatar;
+          } else {
+            avatar = getUserAvatar();
+          }
+          if (avatar && typeof avatar != "string") {
+            console.warn("Error in getUserAvatar(): should return a string (got", avatar, ")");
+            avatar = null;
+          }
+        }
+        if (name || color || avatar) {
+          this.update({
+            name: name,
+            color: color,
+            avatar: avatar
+          });
+        }
+      }
+    });
+
+    peers.Self.view = ui.PeerView(peers.Self);
+    storage.tab.get("peerCache").then(deserialize);
+    peers.Self._loadFromSettings().then(function() {
+      peers.Self._loadFromApp();
+      peers.Self.view.update();
+      session.emit("self-updated");
+    });
+  });
+
+  session.on("refresh-user-data", function () {
+    if (peers.Self) {
+      peers.Self._loadFromApp();
+    }
+  });
+
+  TogetherJS.config.track(
+    "getUserName",
+    TogetherJS.config.track(
+      "getUserColor",
+      TogetherJS.config.track(
+        "getUserAvatar",
+        function () {
+          if (peers.Self) {
+            peers.Self._loadFromApp();
+          }
+        }
+      )
+    )
+  );
+
+  peers._SelfLoaded = util.Deferred();
+
+  function serialize() {
+    var peers = [];
+    util.forEachAttr(Peer.peers, function (peer) {
+      peers.push(peer.serialize());
+    });
+    return {
+      peers: peers
+    };
+  }
+
+  function deserialize(obj) {
+    if (! obj) {
+      return;
+    }
+    obj.peers.forEach(function (peer) {
+      Peer.deserialize(peer);
+    });
+  }
+
+  peers.getPeer = function getPeer(id, message) {
+    assert(id);
+    var peer = Peer.peers[id];
+    if (id === session.clientId) {
+      return peers.Self;
+    }
+    if (message && ! peer) {
+      peer = Peer(id, {fromHelloMessage: message});
+      return peer;
+    }
+    assert(peer, "No peer with id:", id);
+    if (message &&
+        (message.type == "hello" || message.type == "hello-back" ||
+         message.type == "peer-update")) {
+      peer.updateFromHello(message);
+      peer.view.update();
+    }
+    return Peer.peers[id];
+  };
+
+  peers.getAllPeers = function (liveOnly) {
+    var result = [];
+    util.forEachAttr(Peer.peers, function (peer) {
+      if (liveOnly && peer.status != "live") {
+        return;
+      }
+      result.push(peer);
+    });
+    return result;
+  };
+
+  function checkActivity() {
+    var ps = peers.getAllPeers();
+    var now = Date.now();
+    ps.forEach(function (p) {
+      if (p.idle == "active" && now - p.lastMessageDate > IDLE_TIME) {
+        p.update({idle: "inactive"});
+      }
+      if (p.status != "bye" && now - p.lastMessageDate > BYE_TIME) {
+        p.bye();
+      }
+    });
+  }
+
+  session.hub.on("bye", function (msg) {
+    var peer = peers.getPeer(msg.clientId);
+    peer.bye();
+  });
+
+  var checkActivityTask = null;
+
+  session.on("start", function () {
+    if (checkActivityTask) {
+      console.warn("Old peers checkActivityTask left over?");
+      clearTimeout(checkActivityTask);
+    }
+    checkActivityTask = setInterval(checkActivity, CHECK_ACTIVITY_INTERVAL);
+  });
+
+  session.on("close", function () {
+    util.forEachAttr(Peer.peers, function (peer) {
+      peer.destroy();
+    });
+    storage.tab.set("peerCache", undefined);
+    clearTimeout(checkActivityTask);
+    checkActivityTask = null;
+  });
+
+  var tabIdleTimeout = null;
+
+  session.on("visibility-change", function (hidden) {
+    if (hidden) {
+      if (tabIdleTimeout) {
+        clearTimeout(tabIdleTimeout);
+      }
+      tabIdleTimeout = setTimeout(function () {
+        peers.Self.update({idle: "inactive"});
+      }, TAB_IDLE_TIME);
+    } else {
+      if (tabIdleTimeout) {
+        clearTimeout(tabIdleTimeout);
+      }
+      if (peers.Self.idle == "inactive") {
+        peers.Self.update({idle: "active"});
+      }
+    }
+  });
+
+  session.hub.on("idle-status", function (msg) {
+    msg.peer.update({idle: msg.idle});
+  });
+
+  // Pings are a straight alive check, and contain no more information:
+  session.hub.on("ping", function () {
+    session.send({type: "ping-back"});
+  });
+
+  window.addEventListener("pagehide", function () {
+    // FIXME: not certain if this should be tab local or not:
+    storeSerialization();
+  }, false);
+
+  function storeSerialization() {
+    storage.tab.set("peerCache", serialize());
+  }
+
+  util.mixinEvents(peers);
+
+  util.testExpose({
+    setIdleTime: function (time) {
+      IDLE_TIME = time;
+      CHECK_ACTIVITY_INTERVAL = time / 2;
+      if (TogetherJS.running) {
+        clearTimeout(checkActivityTask);
+        checkActivityTask = setInterval(checkActivity, CHECK_ACTIVITY_INTERVAL);
+      }
+    }
+  });
+
+  util.testExpose({
+    setByeTime: function (time) {
+      BYE_TIME = time;
+      CHECK_ACTIVITY_INTERVAL = Math.min(CHECK_ACTIVITY_INTERVAL, time / 2);
+      if (TogetherJS.running) {
+        clearTimeout(checkActivityTask);
+        checkActivityTask = setInterval(checkActivity, CHECK_ACTIVITY_INTERVAL);
+      }
+    }
+  });
+
+  return peers;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define('windowing',["jquery", "util", "peers", "session"], function ($, util, peers, session) {
+  var assert = util.assert;
+  var windowing = util.Module("windowing");
+  var $window = $(window);
+  // This is also in togetherjs.less, under .togetherjs-animated
+  var ANIMATION_DURATION = 1000;
+
+  /* Displays one window.  A window must already exist.  This hides other windows, and
+     positions the window according to its data-bound-to attributes */
+  windowing.show = function (element, options) {
+    element = $(element);
+    options = options || {};
+    options.bind = options.bind || element.attr("data-bind-to");
+    var notification = element.hasClass("togetherjs-notification");
+    var modal = element.hasClass("togetherjs-modal");
+    if (options.bind) {
+      options.bind = $(options.bind);
+    }
+    windowing.hide();
+    element.stop();
+    element.show();
+    // In addition to being hidden, the window can be faded out, which we want to undo:
+    element.css({opacity: "1"});
+    if (options.bind) {
+      assert(! modal, "Binding does not currently work with modals");
+      bind(element, options.bind);
+    }
+    if (notification) {
+      element.slideIn();
+    } else if (! modal) {
+      element.popinWindow();
+    }
+    if (modal) {
+      getModalBackground().show();
+      modalEscape.bind();
+    }
+    onClose = options.onClose || null;
+    session.emit("display-window", element.attr("id"), element);
+  };
+
+  var onClose = null;
+
+  /* Moves a window to be attached to data-bind-to, e.g., the button
+     that opened the window. Or you can provide an element that it should bind to. */
+  function bind(win, bound) {
+    if ($.browser.mobile) {
+      return;
+    }
+    win = $(win);
+    assert(bound.length, "Cannot find binding:", bound.selector, "from:", win.selector);
+    // FIXME: hardcoding
+    var ifacePos = "right";
+    //var ifacePos = panelPosition();
+    var boundPos = bound.offset();
+    boundPos.height = bound.height();
+    boundPos.width = bound.width();
+    var windowHeight = $window.height();
+    boundPos.top -= $window.scrollTop();
+    boundPos.left -= $window.scrollLeft();
+    // FIXME: I appear to have to add the padding to the width to get a "true"
+    // width.  But it's still not entirely consistent.
+    var height = win.height() + 5;
+    var width = win.width() + 20;
+    var left, top;
+    if (ifacePos == "right") {
+      left = boundPos.left - 11 - width;
+      top = boundPos.top + (boundPos.height / 2) - (height / 2);
+    } else if (ifacePos == "left") {
+      left = boundPos.left + boundPos.width + 15;
+      top = boundPos.top + (boundPos.height / 2) - (height / 2);
+    } else if (ifacePos == "bottom") {
+      left = (boundPos.left + boundPos.width / 2) - (width / 2);
+      top = boundPos.top - 10 - height;
+    }
+    top = Math.min(windowHeight - 10 - height, Math.max(10, top));
+    win.css({
+      top: top + "px",
+      left: left + "px"
+    });
+    if (win.hasClass("togetherjs-window")) {
+      $("#togetherjs-window-pointer-right, #togetherjs-window-pointer-left").hide();
+      var pointer = $("#togetherjs-window-pointer-" + ifacePos);
+      pointer.show();
+      if (ifacePos == "right") {
+        pointer.css({
+          top: boundPos.top + Math.floor(boundPos.height / 2) + "px",
+          left: left + win.width() + 9 + "px"
+        });
+      } else if (ifacePos == "left") {
+        pointer.css({
+          top: boundPos.top + Math.floor(boundPos.height / 2) + "px",
+          left: (left - 5) + "px"
+        });
+      } else {
+        console.warn("don't know how to deal with position:", ifacePos);
+      }
+    }
+    win.data("boundTo", bound.selector || "#" + bound.attr("id"));
+    bound.addClass("togetherjs-active");
+  }
+
+  session.on("resize", function () {
+    var win = $(".togetherjs-modal:visible, .togetherjs-window:visible");
+    if (! win.length) {
+      return;
+    }
+    var boundTo = win.data("boundTo");
+    if (! boundTo) {
+      return;
+    }
+    boundTo = $(boundTo);
+    bind(win, boundTo);
+  });
+
+  windowing.hide = function (els) {
+    // FIXME: also hide modals?
+    els = els || ".togetherjs-window, .togetherjs-modal, .togetherjs-notification";
+    els = $(els);
+    els = els.filter(":visible");
+    els.filter(":not(.togetherjs-notification)").hide();
+    getModalBackground().hide();
+    var windows = [];
+    els.each(function (index, element) {
+      element = $(element);
+      windows.push(element);
+      var bound = element.data("boundTo");
+      if (! bound) {
+        return;
+      }
+      bound = $(bound);
+      bound.addClass("togetherjs-animated").addClass("togetherjs-color-pulse");
+      setTimeout(function () {
+        bound.removeClass("togetherjs-color-pulse").removeClass("togetherjs-animated");
+      }, ANIMATION_DURATION+10);
+      element.data("boundTo", null);
+      bound.removeClass("togetherjs-active");
+      if (element.hasClass("togetherjs-notification")) {
+        element.fadeOut().promise().then(function () {
+          this.hide();
+        });
+      }
+    });
+    $("#togetherjs-window-pointer-right, #togetherjs-window-pointer-left").hide();
+    if (onClose) {
+      onClose();
+      onClose = null;
+    }
+    if (windows.length) {
+      session.emit("hide-window", windows);
+    }
+  };
+
+  windowing.showNotification = function (element, options) {
+    element = $(element);
+    options = options || {};
+    assert(false);
+  };
+
+  windowing.toggle = function (el) {
+    el = $(el);
+    if (el.is(":visible")) {
+      windowing.hide(el);
+    } else {
+      windowing.show(el);
+    }
+  };
+
+  function bindEvents(el) {
+    el.find(".togetherjs-close, .togetherjs-dismiss").click(function (event) {
+      var w = $(event.target).closest(".togetherjs-window, .togetherjs-modal, .togetherjs-notification");
+      windowing.hide(w);
+      event.stopPropagation();
+      return false;
+    });
+  }
+
+  function getModalBackground() {
+    if (getModalBackground.element) {
+      return getModalBackground.element;
+    }
+    var background = $("#togetherjs-modal-background");
+    assert(background.length);
+    getModalBackground.element = background;
+    background.click(function () {
+      windowing.hide();
+    });
+    return background;
+  }
+
+  var modalEscape = {
+    bind: function () {
+      $(document).keydown(modalEscape.onKeydown);
+    },
+    unbind: function () {
+      $(document).unbind("keydown", modalEscape.onKeydown);
+    },
+    onKeydown: function (event) {
+      if (event.which == 27) {
+        windowing.hide();
+      }
+    }
+  };
+
+  session.on("close", function () {
+    modalEscape.unbind();
+  });
+
+  session.on("new-element", function (el) {
+    bindEvents(el);
+  });
+
+  return windowing;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define('templating',["jquery", "util", "peers", "windowing", "session"], function ($, util, peers, windowing, session) {
+  var assert = util.assert;
+  var templating = util.Module("templating");
+
+  templating.clone = function (templateId) {
+    templateId = "#togetherjs-template-" + templateId;
+    var template = $(templateId);
+    assert(template.length, "No template found with id:", templateId);
+    template = template.clone();
+    template.attr("id", null);
+    // FIXME: if called directly, doesn't emit new-element event:
+    return template;
+  };
+
+  templating.sub = function (templateId, variables) {
+    var template = templating.clone(templateId);
+    variables = variables || {};
+    util.forEachAttr(variables, function (value, attr) {
+      // FIXME: do the substitution... somehow?
+      var subs = template.find(".togetherjs-sub-" + attr).removeClass("togetherjs-sub-" + attr);
+      if (subs.length) {
+        if (typeof value == "string") {
+          subs.text(value);
+        } else if (value instanceof $) {
+          subs.append(value);
+        } else {
+          assert(false, "Unknown variable value type:", attr, "=", value);
+        }
+      }
+      var ifs = template.find(".togetherjs-if-" + attr).removeClass("togetherjs-sub-" + attr);
+      if (! value) {
+        ifs.hide();
+      }
+      ifs = template.find(".togetherjs-ifnot-" + attr).removeClass("togetherjs-ifnot-" + attr);
+      if (value) {
+        ifs.hide();
+      }
+      var attrName = "data-togetherjs-subattr-" + attr;
+      var attrs = template.find("[" + attrName + "]");
+      attrs.each(function (index, element) {
+        assert(typeof value == "string");
+        element = $(element);
+        var subAttribute = element.attr(attrName);
+        element.attr(attrName, null);
+        element.attr(subAttribute, value);
+      });
+    });
+    if (variables.peer) {
+      variables.peer.view.setElement(template);
+    }
+    if (variables.date) {
+      var date = variables.date;
+      if (typeof date == "number") {
+        date = new Date(date);
+      }
+      var ampm = "AM";
+      var hour = date.getHours();
+      if (hour > 12) {
+        hour -= 12;
+        ampm = "PM";
+      }
+      var minute = date.getMinutes();
+      var t = hour + ":";
+      if (minute < 10) {
+        t += "0";
+      }
+      t += minute;
+      template.find(".togetherjs-time").text(t);
+      template.find(".togetherjs-ampm").text(ampm);
+    }
+
+    // FIXME: silly this is on session:
+    session.emit("new-element", template);
+    return template;
+  };
+
+  return templating;
+});
+
+define('linkify',[], function () {
+  // FIXME: this could be moved to a different module, it's pretty stand-alone
+  /* Finds any links in the text of an element (or its children) and turns them
+     into anchors (with target=_blank) */
+  function linkify(el) {
+    if (el.jquery) {
+      el = el[0];
+    }
+    el.normalize();
+    function linkifyNode(node) {
+      var _len = node.childNodes.length;
+      for (var i=0; i<_len; i++) {
+        if (node.childNodes[i].nodeType == document.ELEMENT_NODE) {
+          linkifyNode(node.childNodes[i]);
+        }
+      }
+      var texts = [];
+      for (i=0; i<_len; i++) {
+        if (node.childNodes[i].nodeType == document.TEXT_NODE) {
+          texts.push(node.childNodes[i]);
+        }
+      }
+      texts.forEach(function (item) {
+        if (item.nodeType == document.ELEMENT_NODE) {
+          linkifyNode(item);
+        } else if (item.nodeType == document.TEXT_NODE) {
+          while (true) {
+            var text = item.nodeValue;
+            var regex = /\bhttps?:\/\/[a-z0-9\.\-_](:\d+)?[^ \n\t<>()\[\]]*/i;
+            var match = regex.exec(text);
+            if (! match) {
+              break;
+            }
+            var leadingNode = document.createTextNode(text.substr(0, match.index));
+            node.replaceChild(leadingNode, item);
+            var anchor = document.createElement("a");
+            anchor.setAttribute("target", "_blank");
+            anchor.href = match[0];
+            anchor.appendChild(document.createTextNode(match[0]));
+            node.insertBefore(anchor, leadingNode.nextSibling);
+            var trailing = document.createTextNode(text.substr(match.index + match[0].length));
+            node.insertBefore(trailing, anchor.nextSibling);
+            item = trailing;
+          }
+        }
+      });
+    }
+    linkifyNode(el);
+    return el;
+  }
+
+  return linkify;
+});
+
+// TinyColor v0.9.13
+// https://github.com/bgrins/TinyColor
+// 2012-11-28, Brian Grinstead, MIT License
+
+(function(root) {
+
+var trimLeft = /^[\s,#]+/,
+    trimRight = /\s+$/,
+    tinyCounter = 0,
+    math = Math,
+    mathRound = math.round,
+    mathMin = math.min,
+    mathMax = math.max,
+    mathRandom = math.random;
+
+function tinycolor (color, opts) {
+
+    color = (color) ? color : '';
+
+    // If input is already a tinycolor, return itself
+    if (typeof color == "object" && color.hasOwnProperty("_tc_id")) {
+       return color;
+    }
+
+    var rgb = inputToRGB(color);
+    var r = rgb.r,
+        g = rgb.g,
+        b = rgb.b,
+        a = rgb.a,
+        roundA = mathRound(100*a) / 100,
+        format = rgb.format;
+
+    // Don't let the range of [0,255] come back in [0,1].
+    // Potentially lose a little bit of precision here, but will fix issues where
+    // .5 gets interpreted as half of the total, instead of half of 1
+    // If it was supposed to be 128, this was already taken care of by `inputToRgb`
+    if (r < 1) { r = mathRound(r); }
+    if (g < 1) { g = mathRound(g); }
+    if (b < 1) { b = mathRound(b); }
+
+    return {
+        ok: rgb.ok,
+        format: format,
+        _tc_id: tinyCounter++,
+        alpha: a,
+        toHsv: function() {
+            var hsv = rgbToHsv(r, g, b);
+            return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: a };
+        },
+        toHsvString: function() {
+            var hsv = rgbToHsv(r, g, b);
+            var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
+            return (a == 1) ?
+              "hsv("  + h + ", " + s + "%, " + v + "%)" :
+              "hsva(" + h + ", " + s + "%, " + v + "%, "+ roundA + ")";
+        },
+        toHsl: function() {
+            var hsl = rgbToHsl(r, g, b);
+            return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: a };
+        },
+        toHslString: function() {
+            var hsl = rgbToHsl(r, g, b);
+            var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
+            return (a == 1) ?
+              "hsl("  + h + ", " + s + "%, " + l + "%)" :
+              "hsla(" + h + ", " + s + "%, " + l + "%, "+ roundA + ")";
+        },
+        toHex: function() {
+            return rgbToHex(r, g, b);
+        },
+        toHexString: function() {
+            return '#' + rgbToHex(r, g, b);
+        },
+        toRgb: function() {
+            return { r: mathRound(r), g: mathRound(g), b: mathRound(b), a: a };
+        },
+        toRgbString: function() {
+            return (a == 1) ?
+              "rgb("  + mathRound(r) + ", " + mathRound(g) + ", " + mathRound(b) + ")" :
+              "rgba(" + mathRound(r) + ", " + mathRound(g) + ", " + mathRound(b) + ", " + roundA + ")";
+        },
+        toPercentageRgb: function() {
+            return { r: mathRound(bound01(r, 255) * 100) + "%", g: mathRound(bound01(g, 255) * 100) + "%", b: mathRound(bound01(b, 255) * 100) + "%", a: a };
+        },
+        toPercentageRgbString: function() {
+            return (a == 1) ?
+              "rgb("  + mathRound(bound01(r, 255) * 100) + "%, " + mathRound(bound01(g, 255) * 100) + "%, " + mathRound(bound01(b, 255) * 100) + "%)" :
+              "rgba(" + mathRound(bound01(r, 255) * 100) + "%, " + mathRound(bound01(g, 255) * 100) + "%, " + mathRound(bound01(b, 255) * 100) + "%, " + roundA + ")";
+        },
+        toName: function() {
+            return hexNames[rgbToHex(r, g, b)] || false;
+        },
+        toFilter: function() {
+            var hex = rgbToHex(r, g, b);
+            var secondHex = hex;
+            var alphaHex = Math.round(parseFloat(a) * 255).toString(16);
+            var secondAlphaHex = alphaHex;
+            var gradientType = opts && opts.gradientType ? "GradientType = 1, " : "";
+
+            if (secondColor) {
+                var s = tinycolor(secondColor);
+                secondHex = s.toHex();
+                secondAlphaHex = Math.round(parseFloat(s.alpha) * 255).toString(16);
+            }
+
+            return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr=#" + pad2(alphaHex) + hex + ",endColorstr=#" + pad2(secondAlphaHex) + secondHex + ")";
+        },
+        toString: function(format) {
+            format = format || this.format;
+            var formattedString = false;
+            if (format === "rgb") {
+                formattedString = this.toRgbString();
+            }
+            if (format === "prgb") {
+                formattedString = this.toPercentageRgbString();
+            }
+            if (format === "hex") {
+                formattedString = this.toHexString();
+            }
+            if (format === "name") {
+                formattedString = this.toName();
+            }
+            if (format === "hsl") {
+                formattedString = this.toHslString();
+            }
+            if (format === "hsv") {
+                formattedString = this.toHsvString();
+            }
+
+            return formattedString || this.toHexString();
+        }
+    };
+}
+
+// If input is an object, force 1 into "1.0" to handle ratios properly
+// String input requires "1.0" as input, so 1 will be treated as 1
+tinycolor.fromRatio = function(color) {
+    if (typeof color == "object") {
+        var newColor = {};
+        for (var i in color) {
+            newColor[i] = convertToPercentage(color[i]);
+        }
+        color = newColor;
+    }
+
+    return tinycolor(color);
+};
+
+// Given a string or object, convert that input to RGB
+// Possible string inputs:
+//
+//     "red"
+//     "#f00" or "f00"
+//     "#ff0000" or "ff0000"
+//     "rgb 255 0 0" or "rgb (255, 0, 0)"
+//     "rgb 1.0 0 0" or "rgb (1, 0, 0)"
+//     "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
+//     "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
+//     "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
+//     "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
+//     "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
+//
+function inputToRGB(color) {
+
+    var rgb = { r: 255, g: 255, b: 255 };
+    var a = 1;
+    var ok = false;
+    var format = false;
+
+    if (typeof color == "string") {
+        color = stringInputToObject(color);
+    }
+
+    if (typeof color == "object") {
+        if (color.hasOwnProperty("r") && color.hasOwnProperty("g") && color.hasOwnProperty("b")) {
+            rgb = rgbToRgb(color.r, color.g, color.b);
+            ok = true;
+            format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
+        }
+        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("v")) {
+            color.s = convertToPercentage(color.s);
+            color.v = convertToPercentage(color.v);
+            rgb = hsvToRgb(color.h, color.s, color.v);
+            ok = true;
+            format = "hsv";
+        }
+        else if (color.hasOwnProperty("h") && color.hasOwnProperty("s") && color.hasOwnProperty("l")) {
+            color.s = convertToPercentage(color.s);
+            color.l = convertToPercentage(color.l);
+            rgb = hslToRgb(color.h, color.s, color.l);
+            ok = true;
+            format = "hsl";
+        }
+
+        if (color.hasOwnProperty("a")) {
+            a = color.a;
+        }
+    }
+
+    a = parseFloat(a);
+
+    // Handle invalid alpha characters by setting to 1
+    if (isNaN(a) || a < 0 || a > 1) {
+        a = 1;
+    }
+
+    return {
+        ok: ok,
+        format: color.format || format,
+        r: mathMin(255, mathMax(rgb.r, 0)),
+        g: mathMin(255, mathMax(rgb.g, 0)),
+        b: mathMin(255, mathMax(rgb.b, 0)),
+        a: a
+    };
+}
+
+
+
+// Conversion Functions
+// --------------------
+
+// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
+// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
+
+// `rgbToRgb`
+// Handle bounds / percentage checking to conform to CSS color spec
+// <http://www.w3.org/TR/css3-color/>
+// *Assumes:* r, g, b in [0, 255] or [0, 1]
+// *Returns:* { r, g, b } in [0, 255]
+function rgbToRgb(r, g, b){
+    return {
+        r: bound01(r, 255) * 255,
+        g: bound01(g, 255) * 255,
+        b: bound01(b, 255) * 255
+    };
+}
+
+// `rgbToHsl`
+// Converts an RGB color value to HSL.
+// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
+// *Returns:* { h, s, l } in [0,1]
+function rgbToHsl(r, g, b) {
+
+    r = bound01(r, 255);
+    g = bound01(g, 255);
+    b = bound01(b, 255);
+
+    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+    var h, s, l = (max + min) / 2;
+
+    if(max == min) {
+        h = s = 0; // achromatic
+    }
+    else {
+        var d = max - min;
+        s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+        switch(max) {
+            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+            case g: h = (b - r) / d + 2; break;
+            case b: h = (r - g) / d + 4; break;
+        }
+
+        h /= 6;
+    }
+
+    return { h: h, s: s, l: l };
+}
+
+// `hslToRgb`
+// Converts an HSL color value to RGB.
+// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
+// *Returns:* { r, g, b } in the set [0, 255]
+function hslToRgb(h, s, l) {
+    var r, g, b;
+
+    h = bound01(h, 360);
+    s = bound01(s, 100);
+    l = bound01(l, 100);
+
+    function hue2rgb(p, q, t) {
+        if(t < 0) t += 1;
+        if(t > 1) t -= 1;
+        if(t < 1/6) return p + (q - p) * 6 * t;
+        if(t < 1/2) return q;
+        if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
+        return p;
+    }
+
+    if(s === 0) {
+        r = g = b = l; // achromatic
+    }
+    else {
+        var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+        var p = 2 * l - q;
+        r = hue2rgb(p, q, h + 1/3);
+        g = hue2rgb(p, q, h);
+        b = hue2rgb(p, q, h - 1/3);
+    }
+
+    return { r: r * 255, g: g * 255, b: b * 255 };
+}
+
+// `rgbToHsv`
+// Converts an RGB color value to HSV
+// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
+// *Returns:* { h, s, v } in [0,1]
+function rgbToHsv(r, g, b) {
+
+    r = bound01(r, 255);
+    g = bound01(g, 255);
+    b = bound01(b, 255);
+
+    var max = mathMax(r, g, b), min = mathMin(r, g, b);
+    var h, s, v = max;
+
+    var d = max - min;
+    s = max === 0 ? 0 : d / max;
+
+    if(max == min) {
+        h = 0; // achromatic
+    }
+    else {
+        switch(max) {
+            case r: h = (g - b) / d + (g < b ? 6 : 0); break;
+            case g: h = (b - r) / d + 2; break;
+            case b: h = (r - g) / d + 4; break;
+        }
+        h /= 6;
+    }
+    return { h: h, s: s, v: v };
+}
+
+// `hsvToRgb`
+// Converts an HSV color value to RGB.
+// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
+// *Returns:* { r, g, b } in the set [0, 255]
+ function hsvToRgb(h, s, v) {
+
+    h = bound01(h, 360) * 6;
+    s = bound01(s, 100);
+    v = bound01(v, 100);
+
+    var i = math.floor(h),
+        f = h - i,
+        p = v * (1 - s),
+        q = v * (1 - f * s),
+        t = v * (1 - (1 - f) * s),
+        mod = i % 6,
+        r = [v, q, p, p, t, v][mod],
+        g = [t, v, v, q, p, p][mod],
+        b = [p, p, t, v, v, q][mod];
+
+    return { r: r * 255, g: g * 255, b: b * 255 };
+}
+
+// `rgbToHex`
+// Converts an RGB color to hex
+// Assumes r, g, and b are contained in the set [0, 255]
+// Returns a 3 or 6 character hex
+function rgbToHex(r, g, b) {
+    var hex = [
+        pad2(mathRound(r).toString(16)),
+        pad2(mathRound(g).toString(16)),
+        pad2(mathRound(b).toString(16))
+    ];
+
+    // Return a 3 character hex if possible
+    if (hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
+        return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
+    }
+
+    return hex.join("");
+}
+
+// `equals`
+// Can be called with any tinycolor input
+tinycolor.equals = function (color1, color2) {
+    if (!color1 || !color2) { return false; }
+    return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
+};
+tinycolor.random = function() {
+    return tinycolor.fromRatio({
+        r: mathRandom(),
+        g: mathRandom(),
+        b: mathRandom()
+    });
+};
+
+
+// Modification Functions
+// ----------------------
+// Thanks to less.js for some of the basics here
+// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
+
+
+tinycolor.desaturate = function (color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.s -= ((amount || 10) / 100);
+    hsl.s = clamp01(hsl.s);
+    return tinycolor(hsl);
+};
+tinycolor.saturate = function (color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.s += ((amount || 10) / 100);
+    hsl.s = clamp01(hsl.s);
+    return tinycolor(hsl);
+};
+tinycolor.greyscale = function(color) {
+    return tinycolor.desaturate(color, 100);
+};
+tinycolor.lighten = function(color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.l += ((amount || 10) / 100);
+    hsl.l = clamp01(hsl.l);
+    return tinycolor(hsl);
+};
+tinycolor.darken = function (color, amount) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.l -= ((amount || 10) / 100);
+    hsl.l = clamp01(hsl.l);
+    return tinycolor(hsl);
+};
+tinycolor.complement = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    hsl.h = (hsl.h + 180) % 360;
+    return tinycolor(hsl);
+};
+
+
+// Combination Functions
+// ---------------------
+// Thanks to jQuery xColor for some of the ideas behind these
+// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
+
+tinycolor.triad = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    var h = hsl.h;
+    return [
+        tinycolor(color),
+        tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
+        tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
+    ];
+};
+tinycolor.tetrad = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    var h = hsl.h;
+    return [
+        tinycolor(color),
+        tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
+        tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
+        tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
+    ];
+};
+tinycolor.splitcomplement = function(color) {
+    var hsl = tinycolor(color).toHsl();
+    var h = hsl.h;
+    return [
+        tinycolor(color),
+        tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
+        tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
+    ];
+};
+tinycolor.analogous = function(color, results, slices) {
+    results = results || 6;
+    slices = slices || 30;
+
+    var hsl = tinycolor(color).toHsl();
+    var part = 360 / slices;
+    var ret = [tinycolor(color)];
+
+    for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
+        hsl.h = (hsl.h + part) % 360;
+        ret.push(tinycolor(hsl));
+    }
+    return ret;
+};
+tinycolor.monochromatic = function(color, results) {
+    results = results || 6;
+    var hsv = tinycolor(color).toHsv();
+    var h = hsv.h, s = hsv.s, v = hsv.v;
+    var ret = [];
+    var modification = 1 / results;
+
+    while (results--) {
+        ret.push(tinycolor({ h: h, s: s, v: v}));
+        v = (v + modification) % 1;
+    }
+
+    return ret;
+};
+// Readability based on W3C recommendations: http://www.w3.org/TR/AERT#color-contrast
+// Returns object with two properties:
+//   .brightness: the difference in brightness between the two colors
+//   .color: the difference in color/hue between the two colors
+// An "acceptable" color is considered to have a brightness difference of 125 and a
+// color difference of 500
+tinycolor.readability = function(color1, color2) {
+    var a = tinycolor(color1).toRgb(), b = tinycolor(color2).toRgb();
+    var brightnessA = (a.r * 299 + a.g * 587 + a.b * 114) / 1000;
+    var brightnessB = (b.r * 299 + b.g * 587 + b.b * 114) / 1000;
+    var colorDiff = (
+        Math.max(a.r, b.r) - Math.min(a.r, b.r) +
+        Math.max(a.g, b.g) - Math.min(a.g, b.g) +
+        Math.max(a.b, b.b) - Math.min(a.b, b.b));
+    return {
+        brightness: Math.abs(brightnessA - brightnessB),
+        color: colorDiff
+    };
+};
+// True if using color1 over color2 (or vice versa) is "readable"
+// Based on: http://www.w3.org/TR/AERT#color-contrast
+// Example:
+//   tinycolor.readable("#000", "#111") => false
+tinycolor.readable = function(color1, color2) {
+    var readability = tinycolor.readability(color1, color2);
+    return readability.brightness > 125 && readability.color > 500;
+};
+// Given a base color and a list of possible foreground or background
+// colors for that base, returns the most readable color.
+// Example:
+//   tinycolor.mostReadable("#123", ["#fff", "#000"]) => "#000"
+tinycolor.mostReadable = function(baseColor, colorList) {
+    var bestColor;
+    var bestScore = 0;
+    var bestIsReadable = false;
+    for (var i=0; i < colorList.length; i++) {
+        var readability = tinycolor.readability(baseColor, colorList[i]);
+        var readable = readability.brightness > 125 && readability.color > 500;
+        // We normalize both around the "acceptable" breaking point,
+        // but rank brightness constrast higher than hue.  Why?  I'm
+        // not sure, seems reasonable.
+        var score = 3 * (readability.brightness / 125) + (readability.color / 500);
+        if ((readable && ! bestIsReadable) ||
+            (readable && bestIsReadable && score > bestScore) ||
+            ((! readable) && (! bestIsReadable) && score > bestScore)) {
+            bestIsReadable = readable;
+            bestScore = score;
+            bestColor = colorList[i];
+        }
+    }
+    return bestColor;
+};
+
+
+// Big List of Colors
+// ---------
+// <http://www.w3.org/TR/css3-color/#svg-color>
+var names = tinycolor.names = {
+    aliceblue: "f0f8ff",
+    antiquewhite: "faebd7",
+    aqua: "0ff",
+    aquamarine: "7fffd4",
+    azure: "f0ffff",
+    beige: "f5f5dc",
+    bisque: "ffe4c4",
+    black: "000",
+    blanchedalmond: "ffebcd",
+    blue: "00f",
+    blueviolet: "8a2be2",
+    brown: "a52a2a",
+    burlywood: "deb887",
+    burntsienna: "ea7e5d",
+    cadetblue: "5f9ea0",
+    chartreuse: "7fff00",
+    chocolate: "d2691e",
+    coral: "ff7f50",
+    cornflowerblue: "6495ed",
+    cornsilk: "fff8dc",
+    crimson: "dc143c",
+    cyan: "0ff",
+    darkblue: "00008b",
+    darkcyan: "008b8b",
+    darkgoldenrod: "b8860b",
+    darkgray: "a9a9a9",
+    darkgreen: "006400",
+    darkgrey: "a9a9a9",
+    darkkhaki: "bdb76b",
+    darkmagenta: "8b008b",
+    darkolivegreen: "556b2f",
+    darkorange: "ff8c00",
+    darkorchid: "9932cc",
+    darkred: "8b0000",
+    darksalmon: "e9967a",
+    darkseagreen: "8fbc8f",
+    darkslateblue: "483d8b",
+    darkslategray: "2f4f4f",
+    darkslategrey: "2f4f4f",
+    darkturquoise: "00ced1",
+    darkviolet: "9400d3",
+    deeppink: "ff1493",
+    deepskyblue: "00bfff",
+    dimgray: "696969",
+    dimgrey: "696969",
+    dodgerblue: "1e90ff",
+    firebrick: "b22222",
+    floralwhite: "fffaf0",
+    forestgreen: "228b22",
+    fuchsia: "f0f",
+    gainsboro: "dcdcdc",
+    ghostwhite: "f8f8ff",
+    gold: "ffd700",
+    goldenrod: "daa520",
+    gray: "808080",
+    green: "008000",
+    greenyellow: "adff2f",
+    grey: "808080",
+    honeydew: "f0fff0",
+    hotpink: "ff69b4",
+    indianred: "cd5c5c",
+    indigo: "4b0082",
+    ivory: "fffff0",
+    khaki: "f0e68c",
+    lavender: "e6e6fa",
+    lavenderblush: "fff0f5",
+    lawngreen: "7cfc00",
+    lemonchiffon: "fffacd",
+    lightblue: "add8e6",
+    lightcoral: "f08080",
+    lightcyan: "e0ffff",
+    lightgoldenrodyellow: "fafad2",
+    lightgray: "d3d3d3",
+    lightgreen: "90ee90",
+    lightgrey: "d3d3d3",
+    lightpink: "ffb6c1",
+    lightsalmon: "ffa07a",
+    lightseagreen: "20b2aa",
+    lightskyblue: "87cefa",
+    lightslategray: "789",
+    lightslategrey: "789",
+    lightsteelblue: "b0c4de",
+    lightyellow: "ffffe0",
+    lime: "0f0",
+    limegreen: "32cd32",
+    linen: "faf0e6",
+    magenta: "f0f",
+    maroon: "800000",
+    mediumaquamarine: "66cdaa",
+    mediumblue: "0000cd",
+    mediumorchid: "ba55d3",
+    mediumpurple: "9370db",
+    mediumseagreen: "3cb371",
+    mediumslateblue: "7b68ee",
+    mediumspringgreen: "00fa9a",
+    mediumturquoise: "48d1cc",
+    mediumvioletred: "c71585",
+    midnightblue: "191970",
+    mintcream: "f5fffa",
+    mistyrose: "ffe4e1",
+    moccasin: "ffe4b5",
+    navajowhite: "ffdead",
+    navy: "000080",
+    oldlace: "fdf5e6",
+    olive: "808000",
+    olivedrab: "6b8e23",
+    orange: "ffa500",
+    orangered: "ff4500",
+    orchid: "da70d6",
+    palegoldenrod: "eee8aa",
+    palegreen: "98fb98",
+    paleturquoise: "afeeee",
+    palevioletred: "db7093",
+    papayawhip: "ffefd5",
+    peachpuff: "ffdab9",
+    peru: "cd853f",
+    pink: "ffc0cb",
+    plum: "dda0dd",
+    powderblue: "b0e0e6",
+    purple: "800080",
+    red: "f00",
+    rosybrown: "bc8f8f",
+    royalblue: "4169e1",
+    saddlebrown: "8b4513",
+    salmon: "fa8072",
+    sandybrown: "f4a460",
+    seagreen: "2e8b57",
+    seashell: "fff5ee",
+    sienna: "a0522d",
+    silver: "c0c0c0",
+    skyblue: "87ceeb",
+    slateblue: "6a5acd",
+    slategray: "708090",
+    slategrey: "708090",
+    snow: "fffafa",
+    springgreen: "00ff7f",
+    steelblue: "4682b4",
+    tan: "d2b48c",
+    teal: "008080",
+    thistle: "d8bfd8",
+    tomato: "ff6347",
+    turquoise: "40e0d0",
+    violet: "ee82ee",
+    wheat: "f5deb3",
+    white: "fff",
+    whitesmoke: "f5f5f5",
+    yellow: "ff0",
+    yellowgreen: "9acd32"
+};
+
+// Make it easy to access colors via `hexNames[hex]`
+var hexNames = tinycolor.hexNames = flip(names);
+
+
+// Utilities
+// ---------
+
+// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
+function flip(o) {
+    var flipped = { };
+    for (var i in o) {
+        if (o.hasOwnProperty(i)) {
+            flipped[o[i]] = i;
+        }
+    }
+    return flipped;
+}
+
+// Take input from [0, n] and return it as [0, 1]
+function bound01(n, max) {
+    if (isOnePointZero(n)) { n = "100%"; }
+
+    var processPercent = isPercentage(n);
+    n = mathMin(max, mathMax(0, parseFloat(n)));
+
+    // Automatically convert percentage into number
+    if (processPercent) {
+        n = parseInt(n * max, 10) / 100;
+    }
+
+    // Handle floating point rounding errors
+    if ((math.abs(n - max) < 0.000001)) {
+        return 1;
+    }
+
+    // Convert into [0, 1] range if it isn't already
+    return (n % max) / parseFloat(max);
+}
+
+// Force a number between 0 and 1
+function clamp01(val) {
+    return mathMin(1, mathMax(0, val));
+}
+
+// Parse an integer into hex
+function parseHex(val) {
+    return parseInt(val, 16);
+}
+
+// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
+// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
+function isOnePointZero(n) {
+    return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
+}
+
+// Check to see if string passed in is a percentage
+function isPercentage(n) {
+    return typeof n === "string" && n.indexOf('%') != -1;
+}
+
+// Force a hex value to have 2 characters
+function pad2(c) {
+    return c.length == 1 ? '0' + c : '' + c;
+}
+
+// Replace a decimal with it's percentage value
+function convertToPercentage(n) {
+    if (n <= 1) {
+        n = (n * 100) + "%";
+    }
+
+    return n;
+}
+
+var matchers = (function() {
+
+    // <http://www.w3.org/TR/css3-values/#integers>
+    var CSS_INTEGER = "[-\\+]?\\d+%?";
+
+    // <http://www.w3.org/TR/css3-values/#number-value>
+    var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
+
+    // Allow positive/negative integer/number.  Don't capture the either/or, just the entire outcome.
+    var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
+
+    // Actual matching.
+    // Parentheses and commas are optional, but not required.
+    // Whitespace can take the place of commas or opening paren
+    var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+    var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
+
+    return {
+        rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
+        rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
+        hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
+        hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
+        hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
+        hex3: /^([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
+        hex6: /^([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
+    };
+})();
+
+// `stringInputToObject`
+// Permissive string parsing.  Take in a number of formats, and output an object
+// based on detected format.  Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
+function stringInputToObject(color) {
+
+    color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
+    var named = false;
+    if (names[color]) {
+        color = names[color];
+        named = true;
+    }
+    else if (color == 'transparent') {
+        return { r: 0, g: 0, b: 0, a: 0 };
+    }
+
+    // Try to match string input using regular expressions.
+    // Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
+    // Just return an object and let the conversion functions handle that.
+    // This way the result will be the same whether the tinycolor is initialized with string or object.
+    var match;
+    if ((match = matchers.rgb.exec(color))) {
+        return { r: match[1], g: match[2], b: match[3] };
+    }
+    if ((match = matchers.rgba.exec(color))) {
+        return { r: match[1], g: match[2], b: match[3], a: match[4] };
+    }
+    if ((match = matchers.hsl.exec(color))) {
+        return { h: match[1], s: match[2], l: match[3] };
+    }
+    if ((match = matchers.hsla.exec(color))) {
+        return { h: match[1], s: match[2], l: match[3], a: match[4] };
+    }
+    if ((match = matchers.hsv.exec(color))) {
+        return { h: match[1], s: match[2], v: match[3] };
+    }
+    if ((match = matchers.hex6.exec(color))) {
+        return {
+            r: parseHex(match[1]),
+            g: parseHex(match[2]),
+            b: parseHex(match[3]),
+            format: named ? "name" : "hex"
+        };
+    }
+    if ((match = matchers.hex3.exec(color))) {
+        return {
+            r: parseHex(match[1] + '' + match[1]),
+            g: parseHex(match[2] + '' + match[2]),
+            b: parseHex(match[3] + '' + match[3]),
+            format: named ? "name" : "hex"
+        };
+    }
+
+    return false;
+}
+
+// Node: Export function
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = tinycolor;
+}
+// AMD/requirejs: Define the module
+else if (typeof define !== "undefined") {
+    define('tinycolor',[],function () {return tinycolor;});
+}
+// Browser: Expose to window
+else {
+    root.tinycolor = tinycolor;
+}
+
+})(this);
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('elementFinder',["util", "jquery"], function (util, $) {
+  var elementFinder = util.Module("elementFinder");
+  var assert = util.assert;
+
+  elementFinder.ignoreElement = function ignoreElement(el) {
+    if (el instanceof $) {
+      el = el[0];
+    }
+    while (el) {
+      if ($(el).hasClass("togetherjs")) {
+        return true;
+      }
+      el = el.parentNode;
+    }
+    return false;
+  };
+
+  elementFinder.elementLocation = function elementLocation(el) {
+    assert(el !== null, "Got null element");
+    if (el instanceof $) {
+      // a jQuery element
+      el = el[0];
+    }
+    if (el[0] && el.attr && el[0].nodeType == 1) {
+      // Or a jQuery element not made by us
+      el = el[0];
+    }
+    if (el.id) {
+      return "#" + el.id;
+    }
+    if (el.tagName == "BODY") {
+      return "body";
+    }
+    if (el.tagName == "HEAD") {
+      return "head";
+    }
+    if (el === document) {
+      return "document";
+    }
+    var parent = el.parentNode;
+    if ((! parent) || parent == el) {
+      console.warn("elementLocation(", el, ") has null parent");
+      throw new Error("No locatable parent found");
+    }
+    var parentLocation = elementLocation(parent);
+    var children = parent.childNodes;
+    var _len = children.length;
+    var index = 0;
+    for (var i=0; i<_len; i++) {
+      if (children[i] == el) {
+        break;
+      }
+      if (children[i].nodeType == document.ELEMENT_NODE) {
+        if (children[i].className.indexOf("togetherjs") != -1) {
+          // Don't count our UI
+          continue;
+        }
+        // Don't count text or comments
+        index++;
+      }
+    }
+    return parentLocation + ":nth-child(" + (index+1) + ")";
+  };
+
+  elementFinder.CannotFind = util.Class({
+    constructor: function CannotFind(location, reason, context) {
+      this.prefix = "";
+      this.location = location;
+      this.reason = reason;
+      this.context = context;
+    },
+    toString: function () {
+      var loc;
+      try {
+        loc = elementFinder.elementLocation(this.context);
+      } catch (e) {
+        loc = this.context;
+      }
+      return (
+        "[CannotFind " + this.prefix +
+          "(" + this.location + "): " +
+          this.reason + " in " +
+          loc + "]");
+    }
+  });
+
+  elementFinder.findElement = function findElement(loc, container) {
+    // FIXME: should this all just be done with document.querySelector()?
+    // But no!  We can't ignore togetherjs elements with querySelector.
+    // But maybe!  We *could* make togetherjs elements less obtrusive?
+    container = container || document;
+    var el, rest;
+    if (loc === "body") {
+      return document.body;
+    } else if (loc === "head") {
+      return document.head;
+    } else if (loc === "document") {
+      return document;
+    } else if (loc.indexOf("body") === 0) {
+      el = document.body;
+      try {
+        return findElement(loc.substr(("body").length), el);
+      } catch (e) {
+        if (e instanceof elementFinder.CannotFind) {
+          e.prefix = "body" + e.prefix;
+        }
+        throw e;
+      }
+    } else if (loc.indexOf("head") === 0) {
+      el = document.head;
+      try {
+        return findElement(loc.substr(("head").length), el);
+      } catch (e) {
+        if (e instanceof elementFinder.CannotFind) {
+          e.prefix = "head" + e.prefix;
+        }
+        throw e;
+      }
+    } else if (loc.indexOf("#") === 0) {
+      var id;
+      loc = loc.substr(1);
+      if (loc.indexOf(":") === -1) {
+        id = loc;
+        rest = "";
+      } else {
+        id = loc.substr(0, loc.indexOf(":"));
+        rest = loc.substr(loc.indexOf(":"));
+      }
+      el = document.getElementById(id);
+      if (! el) {
+        throw elementFinder.CannotFind("#" + id, "No element by that id", container);
+      }
+      if (rest) {
+        try {
+          return findElement(rest, el);
+        } catch (e) {
+          if (e instanceof elementFinder.CannotFind) {
+            e.prefix = "#" + id + e.prefix;
+          }
+          throw e;
+        }
+      } else {
+        return el;
+      }
+    } else if (loc.indexOf(":nth-child(") === 0) {
+      loc = loc.substr((":nth-child(").length);
+      if (loc.indexOf(")") == -1) {
+        throw "Invalid location, missing ): " + loc;
+      }
+      var num = loc.substr(0, loc.indexOf(")"));
+      num = parseInt(num, 10);
+      var count = num;
+      loc = loc.substr(loc.indexOf(")") + 1);
+      var children = container.childNodes;
+      el = null;
+      for (var i=0; i<children.length; i++) {
+        var child = children[i];
+        if (child.nodeType == document.ELEMENT_NODE) {
+          if (child.className.indexOf("togetherjs") != -1) {
+            continue;
+          }
+          count--;
+          if (count === 0) {
+            // this is the element
+            el = child;
+            break;
+          }
+        }
+      }
+      if (! el) {
+        throw elementFinder.CannotFind(":nth-child(" + num + ")", "container only has " + (num - count) + " elements", container);
+      }
+      if (loc) {
+        try {
+          return elementFinder.findElement(loc, el);
+        } catch (e) {
+          if (e instanceof elementFinder.CannotFind) {
+            e.prefix = ":nth-child(" + num + ")" + e.prefix;
+          }
+          throw e;
+        }
+      } else {
+        return el;
+      }
+    } else {
+      throw elementFinder.CannotFind(loc, "Malformed location", container);
+    }
+  };
+
+  elementFinder.elementByPixel = function (height) {
+    /* Returns {location: "...", offset: pixels}
+
+       To get the pixel position back, you'd do:
+         $(location).offset().top + offset
+     */
+    function search(start, height) {
+      var last = null;
+      var children = start.children();
+      children.each(function () {
+        var el = $(this);
+        if (el.hasClass("togetherjs") || el.css("position") == "fixed" || ! el.is(":visible")) {
+          return;
+        }
+        if (el.offset().top > height) {
+          return false;
+        }
+        last = el;
+      });
+      if ((! children.length) || (! last)) {
+        // There are no children, or only inapplicable children
+        return {
+          location: elementFinder.elementLocation(start[0]),
+          offset: height - start.offset().top,
+          absoluteTop: height,
+          documentHeight: $(document).height()
+        };
+      }
+      return search(last, height);
+    }
+    return search($(document.body), height);
+  };
+
+  elementFinder.pixelForPosition = function (position) {
+    /* Inverse of elementFinder.elementByPixel */
+    if (position.location == "body") {
+      return position.offset;
+    }
+    var el;
+    try {
+      el = elementFinder.findElement(position.location);
+    } catch (e) {
+      if (e instanceof elementFinder.CannotFind && position.absoluteTop) {
+        // We don't trust absoluteTop to be quite right locally, so we adjust
+        // for the total document height differences:
+        var percent = position.absoluteTop / position.documentHeight;
+        return $(document).height() * percent;
+      }
+      throw e;
+    }
+    var top = $(el).offset().top;
+    // FIXME: maybe here we should test for sanity, like if an element is
+    // hidden.  We can use position.absoluteTop to get a sense of where the
+    // element roughly should be.  If the sanity check failed we'd use
+    // absoluteTop
+    return top + position.offset;
+  };
+
+  return elementFinder;
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Loading this module will cause, when TogetherJS is active, the
+   session object to emit visibility-change with a `hidden` argument
+   whenever the visibility changes, on browsers where we can detect
+   it.
+   */
+
+define('visibilityApi',["util", "session"], function (util, session) {
+  var visibilityApi = util.Module("visibilityApi");
+  var hidden;
+  var visibilityChange;
+  if (document.hidden !== undefined) { // Opera 12.10 and Firefox 18 and later support
+    hidden = "hidden";
+    visibilityChange = "visibilitychange";
+  } else if (document.mozHidden !== undefined) {
+    hidden = "mozHidden";
+    visibilityChange = "mozvisibilitychange";
+  } else if (document.msHidden !== undefined) {
+    hidden = "msHidden";
+    visibilityChange = "msvisibilitychange";
+  } else if (document.webkitHidden !== undefined) {
+    hidden = "webkitHidden";
+    visibilityChange = "webkitvisibilitychange";
+  }
+
+  session.on("start", function () {
+    document.addEventListener(visibilityChange, change, false);
+  });
+
+  session.on("close", function () {
+    document.removeEventListener(visibilityChange, change, false);
+  });
+
+  function change() {
+    session.emit("visibility-change", document[hidden]);
+  }
+
+  visibilityApi.hidden = function () {
+    return document[hidden];
+  };
+
+  return visibilityApi;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('ui',["require", "jquery", "util", "session", "templates", "templating", "linkify", "peers", "windowing", "tinycolor", "elementFinder", "visibilityApi"], function (require, $, util, session, templates, templating, linkify, peers, windowing, tinycolor, elementFinder, visibilityApi) {
+  var ui = util.Module('ui');
+  var assert = util.assert;
+  var AssertionError = util.AssertionError;
+  var chat;
+  var $window = $(window);
+  // This is also in togetherjs.less, as @button-height:
+  var BUTTON_HEIGHT = 60 + 1; // 60 is button height, 1 is border
+  // chat TextArea
+  var TEXTAREA_LINE_HEIGHT = 20; // in pixels
+  var TEXTAREA_MAX_LINES = 5;
+  // This is also in togetherjs.less, under .togetherjs-animated
+  var ANIMATION_DURATION = 1000;
+  // Time the new user window sticks around until it fades away:
+  var NEW_USER_FADE_TIMEOUT = 5000;
+  // This is set when an animation will keep the UI from being ready
+  // (until this time):
+  var finishedAt = null;
+  // Time in milliseconds for the dock to animate out:
+  var DOCK_ANIMATION_TIME = 300;
+  // If two chat messages come from the same person in this time
+  // (milliseconds) then they are collapsed into one message:
+  var COLLAPSE_MESSAGE_LIMIT = 5000;
+
+  var COLORS = [
+    "#8A2BE2", "#7FFF00", "#DC143C", "#00FFFF", "#8FBC8F", "#FF8C00", "#FF00FF",
+    "#FFD700", "#F08080", "#90EE90", "#FF6347"];
+
+  // This would be a circular import, but we just need the chat module sometime
+  // after everything is loaded, and this is sure to complete by that time:
+  require(["chat"], function (c) {
+    chat = c;
+  });
+
+  /* Displays some toggleable element; toggleable elements have a
+     data-toggles attribute that indicates what other elements should
+     be hidden when this element is shown. */
+  ui.displayToggle = function (el) {
+    el = $(el);
+    assert(el.length, "No element", arguments[0]);
+    var other = $(el.attr("data-toggles"));
+    assert(other.length, "Cannot toggle", el[0], "selector", other.selector);
+    other.hide();
+    el.show();
+  };
+
+  function panelPosition() {
+    var iface = $("#togetherjs-dock");
+    if (iface.hasClass("togetherjs-dock-right")) {
+      return "right";
+    } else if (iface.hasClass("togetherjs-dock-left")) {
+      return "left";
+    } else if (iface.hasClass("togetherjs-dock-bottom")) {
+      return "bottom";
+    } else {
+      throw new AssertionError("#togetherjs-dock doesn't have positioning class");
+    }
+  }
+
+  ui.container = null;
+
+  // This is used for some signalling when ui.prepareUI and/or
+  // ui.activateUI is called before the DOM is fully loaded:
+  var deferringPrepareUI = null;
+
+  function deferForContainer(func) {
+    /* Defers any calls to func() until after ui.container is set
+       Function cannot have a return value (as sometimes the call will
+       become async).  Use like:
+
+       method: deferForContainer(function (args) {...})
+       */
+    return function () {
+      if (ui.container) {
+        func.apply(this, arguments);
+      }
+      var self = this;
+      var args = Array.prototype.slice.call(arguments);
+      session.once("ui-ready", function () {
+        func.apply(self, args);
+      });
+    };
+  }
+
+  // This is called before activateUI; it doesn't bind anything, but does display
+  // the dock
+  // FIXME: because this module has lots of requirements we can't do
+  // this before those requirements are loaded.  Maybe worth splitting
+  // this out?  OTOH, in production we should have all the files
+  // combined so there's not much problem loading those modules.
+  ui.prepareUI = function () {
+    if (! (document.readyState == "complete" || document.readyState == "interactive")) {
+      // Too soon!  Wait a sec...
+      deferringPrepareUI = "deferring";
+      document.addEventListener("DOMContentLoaded", function () {
+        var d = deferringPrepareUI;
+        deferringPrepareUI = null;
+        ui.prepareUI();
+        // This happens when ui.activateUI is called before the document has been
+        // loaded:
+        if (d == "activate") {
+          ui.activateUI();
+        }
+      });
+      return;
+    }
+    var container = ui.container = $(templates("interface"));
+    assert(container.length);
+    $("body").append(container);
+    fixupAvatars(container);
+    if (session.firstRun && TogetherJS.startTarget) {
+      // Time at which the UI will be fully ready:
+      // (We have to do this because the offset won't be quite right
+      // until the animation finishes - attempts to calculate the
+      // offset without taking into account CSS transforms have so far
+      // failed.)
+      var timeoutSeconds = DOCK_ANIMATION_TIME / 1000;
+      finishedAt = Date.now() + DOCK_ANIMATION_TIME + 50;
+      setTimeout(function () {
+        finishedAt = Date.now() + DOCK_ANIMATION_TIME + 40;
+        var iface = container.find("#togetherjs-dock");
+        var start = iface.offset();
+        var pos = $(TogetherJS.startTarget).offset();
+        pos.top = Math.floor(pos.top - start.top);
+        pos.left = Math.floor(pos.left - start.left);
+        var translate = "translate(" + pos.left + "px, " + pos.top + "px)";
+        iface.css({
+          MozTransform: translate,
+          WebkitTransform: translate,
+          transform: translate,
+          opacity: "0.0"
+        });
+        setTimeout(function () {
+          // We keep recalculating because the setTimeout times aren't always so accurate:
+          finishedAt = Date.now() + DOCK_ANIMATION_TIME + 20;
+          var transition = "transform " + timeoutSeconds + "s ease-out, ";
+          transition += "opacity " + timeoutSeconds + "s ease-out";
+          iface.css({
+            opacity: "1.0",
+            MozTransition: "-moz-" + transition,
+            MozTransform: "translate(0, 0)",
+            WebkitTransition: "-webkit-" + transition,
+            WebkitTransform: "translate(0, 0)",
+            transition: transition,
+            transform: "translate(0, 0)"
+          });
+          setTimeout(function () {
+            finishedAt = null;
+            iface.attr("style", "");
+          }, 510);
+        }, 5);
+      }, 5);
+    }
+    if (TogetherJS.startTarget) {
+      var el = $(TogetherJS.startTarget);
+      var text = el.text().toLowerCase().replace(/\s+/g, " ");
+      text = text.replace(/^\s*/, "").replace(/\s*$/, "");
+      if (text == "start togetherjs") {
+        el.attr("data-end-togetherjs-html", "End TogetherJS");
+      }
+      if (el.attr("data-end-togetherjs-html")) {
+        el.attr("data-start-togetherjs-html", el.html());
+        el.html(el.attr("data-end-togetherjs-html"));
+      }
+      el.addClass("togetherjs-started");
+    }
+    ui.container.find(".togetherjs-window > header, .togetherjs-modal > header").each(function () {
+      $(this).append($('<button class="togetherjs-close"></button>'));
+    });
+
+    TogetherJS.config.track("disableWebRTC", function (hide, previous) {
+      if (hide && ! previous) {
+        ui.container.find("#togetherjs-audio-button").hide();
+        adjustDockSize(-1);
+      } else if ((! hide) && previous) {
+        ui.container.find("#togetherjs-audio-button").show();
+        adjustDockSize(1);
+      }
+    });
+
+    // pgbovine -- disable the user profile and "Invite a friend" link dialogs
+    ui.container.find("#togetherjs-profile-button").hide();
+    ui.container.find("#togetherjs-share-button").hide();
+    adjustDockSize(-2);
+
+  };
+
+  // After prepareUI, this actually makes the interface live.  We have
+  // to do this later because we call prepareUI when many components
+  // aren't initialized, so we don't even want the user to be able to
+  // interact with the interface.  But activateUI is called once
+  // everything is loaded and ready for interaction.
+  ui.activateUI = function () {
+    if (deferringPrepareUI) {
+      console.warn("ui.activateUI called before document is ready; waiting...");
+      deferringPrepareUI = "activate";
+      return;
+    }
+    if (! ui.container) {
+      ui.prepareUI();
+    }
+    var container = ui.container;
+
+    //create the overlay
+    if($.browser.mobile) {
+      // $("body").append( "\x3cdiv class='overlay' style='position: absolute; top: 0; left: 0; background-color: rgba(0,0,0,0); width: 120%; height: 100%; z-index: 1000; margin: -10px'>\x3c/div>" );
+    }
+
+    // The share link:
+    ui.prepareShareLink(container);
+    container.find("input.togetherjs-share-link").on("keydown", function (event) {
+      if (event.which == 27) {
+        windowing.hide("#togetherjs-share");
+        return false;
+      }
+      return undefined;
+    });
+    session.on("shareId", updateShareLink);
+
+    // The chat input element:
+    var input = container.find("#togetherjs-chat-input");
+    input.bind("keydown", function (event) {
+      if (event.which == 13 && !event.shiftKey) { // Enter without Shift pressed
+        submitChat();
+        return false;
+      }
+      if (event.which == 27) { // Escape
+        windowing.hide("#togetherjs-chat");
+        return false;
+      }
+    });
+
+    function submitChat() {
+      var val = input.val();
+      if ($.trim(val)) {
+        input.val("");
+        // triggering the event manually to avoid the addition of newline character to the textarea:
+        input.trigger("input").trigger("propertychange");
+        chat.submit(val);
+      }
+    }
+    // auto-resize textarea:
+    input.on("input propertychange", function () {
+      var $this = $(this);
+      var actualHeight = $this.height();
+      // reset the height of textarea to remove trailing empty space (used for shrinking):
+      $this.height(TEXTAREA_LINE_HEIGHT);
+      this.scrollTop = 0;
+      // scroll to bottom:
+      this.scrollTop = 9999;
+      var newHeight = this.scrollTop + $this.height();
+      var maxHeight = TEXTAREA_MAX_LINES * TEXTAREA_LINE_HEIGHT;
+      if (newHeight > maxHeight) {
+        newHeight = maxHeight;
+        this.style.overflowY = "scroll";
+      } else {
+        this.style.overflowY = "hidden";
+      }
+      this.style.height = newHeight + "px";
+      var diff = newHeight - actualHeight;
+      $("#togetherjs-chat-input-box").height($("#togetherjs-chat-input-box").height() + diff);
+      $("#togetherjs-chat-messages").height($("#togetherjs-chat-messages").height() - diff);
+      return false;
+    });
+
+    util.testExpose({submitChat: submitChat});
+
+    // Moving the window:
+    // FIXME: this should probably be stickier, and not just move the window around
+    // so abruptly
+    var anchor = container.find("#togetherjs-dock-anchor");
+    assert(anchor.length);
+    // FIXME: This is in place to temporarily disable dock dragging:
+    anchor = container.find("#togetherjs-dock-anchor-disabled");
+    anchor.mousedown(function (event) {
+      var iface = $("#togetherjs-dock");
+      // FIXME: switch to .offset() and pageX/Y
+      var startPos = panelPosition();
+      function selectoff() {
+        return false;
+      }
+      function mousemove(event2) {
+        var fromRight = $window.width() + window.pageXOffset - event2.pageX;
+        var fromLeft = event2.pageX - window.pageXOffset;
+        var fromBottom = $window.height() + window.pageYOffset - event2.pageY;
+        // FIXME: this is to temporarily disable the bottom view:
+        fromBottom = 10000;
+
+        var pos;
+        if (fromLeft < fromRight && fromLeft < fromBottom) {
+          pos = "left";
+        } else if (fromRight < fromLeft && fromRight < fromBottom) {
+          pos = "right";
+        } else {
+          pos = "bottom";
+        }
+        iface.removeClass("togetherjs-dock-left");
+        iface.removeClass("togetherjs-dock-right");
+        iface.removeClass("togetherjs-dock-bottom");
+        iface.addClass("togetherjs-dock-" + pos);
+        if (startPos && pos != startPos) {
+          windowing.hide();
+          startPos = null;
+        }
+      }
+      $(document).bind("mousemove", mousemove);
+      // If you don't turn selection off it will still select text, and show a
+      // text selection cursor:
+      $(document).bind("selectstart", selectoff);
+      // FIXME: it seems like sometimes we lose the mouseup event, and it's as though
+      // the mouse is stuck down:
+      $(document).one("mouseup", function () {
+        $(document).unbind("mousemove", mousemove);
+        $(document).unbind("selectstart", selectoff);
+      });
+      return false;
+    });
+
+    function openDock() {
+      $('.togetherjs-window').animate({
+        opacity: 1
+      });
+      $('#togetherjs-dock-participants').animate({
+        opacity: 1
+      });
+      $('#togetherjs-dock #togetherjs-buttons').animate({
+        opacity: 1
+      });
+
+      //for iphone
+      if($(window).width() < 480) {
+        $('.togetherjs-dock-right').animate({
+          width: "204px"
+        }, {
+          duration:60, easing:"linear"
+        });
+      }
+
+      //for ipad
+      else {
+        $('.togetherjs-dock-right').animate({
+          width: "27%"
+        }, {
+          duration:60, easing:"linear"
+        });
+      }
+
+
+      // add bg overlay
+      // $("body").append( "\x3cdiv class='overlay' style='position: absolute; top: 0; left: -2px; background-color: rgba(0,0,0,0.5); width: 200%; height: 400%; z-index: 1000; margin: 0px;'>\x3c/div>" );
+
+      //disable vertical scrolling
+      // $("body").css({
+      //   "position": "fixed",
+      //   top: 0,
+      //   left: 0
+      // });
+
+      //replace the anchor icon
+      var src = "/togetherjs/images/togetherjs-logo-close.png";
+      $("#togetherjs-dock-anchor #togetherjs-dock-anchor-horizontal img").attr("src", src);
+    }
+
+    function closeDock() {
+      //enable vertical scrolling
+      $("body").css({
+        "position": "",
+        top: "",
+        left: ""
+      });
+
+      //replace the anchor icon
+      var src = "/togetherjs/images/togetherjs-logo-open.png";
+      $("#togetherjs-dock-anchor #togetherjs-dock-anchor-horizontal img").attr("src", src);
+
+      $('.togetherjs-window').animate({
+        opacity: 0
+      });
+      $('#togetherjs-dock-participants').animate({
+        opacity: 0
+      });
+      $('#togetherjs-dock #togetherjs-buttons').animate({
+        opacity: 0
+      });
+      $('.togetherjs-dock-right').animate({
+        width: "40px"
+      }, {
+        duration:60, easing:"linear"
+      });
+
+      // remove bg overlay
+      //$(".overlay").remove();
+    }
+
+    // Setting the anchor button + dock mobile actions
+    if($.browser.mobile) {
+
+      // toggle the audio button
+      $("#togetherjs-audio-button").click(function () {
+        windowing.toggle("#togetherjs-rtc-not-supported");
+      });
+
+      // toggle the profile button
+      $("#togetherjs-profile-button").click(function () {
+        windowing.toggle("#togetherjs-menu-window");
+      });
+
+      // $("body").append( "\x3cdiv class='overlay' style='position: absolute; top: 0; left: -2px; background-color: rgba(0,0,0,0.5); width: 200%; height: 400%; z-index: 1000; margin: 0px'>\x3c/div>" );
+
+      //disable vertical scrolling
+      // $("body").css({
+      //   "position": "fixed",
+      //   top: 0,
+      //   left: 0
+      // });
+
+      //replace the anchor icon
+      var src = "/togetherjs/images/togetherjs-logo-close.png";
+      $("#togetherjs-dock-anchor #togetherjs-dock-anchor-horizontal img").attr("src", src);
+
+      $("#togetherjs-dock-anchor").toggle(function() {
+          closeDock();
+        },function(){
+          openDock();
+      });
+    }
+
+    $("#togetherjs-share-button").click(function () {
+      windowing.toggle("#togetherjs-share");
+    });
+
+    $("#togetherjs-profile-button").click(function (event) {
+      if ($.browser.mobile) {
+        windowing.show("#togetherjs-menu-window");
+        return false;
+      }
+      toggleMenu();
+      event.stopPropagation();
+      return false;
+    });
+
+    $("#togetherjs-menu-feedback, #togetherjs-menu-feedback-button").click(function(){
+      windowing.hide();
+      hideMenu();
+      windowing.show("#togetherjs-feedback-form");
+    });
+
+    $("#togetherjs-menu-help, #togetherjs-menu-help-button").click(function () {
+      windowing.hide();
+      hideMenu();
+      require(["walkthrough"], function (walkthrough) {
+        windowing.hide();
+        walkthrough.start(false);
+      });
+    });
+
+    $("#togetherjs-menu-update-name").click(function () {
+      var input = $("#togetherjs-menu .togetherjs-self-name");
+      input.css({
+        width: $("#togetherjs-menu").width() - 32 + "px"
+      });
+      ui.displayToggle("#togetherjs-menu .togetherjs-self-name");
+      $("#togetherjs-menu .togetherjs-self-name").focus();
+    });
+
+    $("#togetherjs-menu-update-name-button").click(function () {
+      windowing.show("#togetherjs-edit-name-window");
+      $("#togetherjs-edit-name-window input").focus();
+    });
+
+    $("#togetherjs-menu .togetherjs-self-name").bind("keyup change", function (event) {
+      console.log("alrighty", event);
+      if (event.which == 13) {
+        ui.displayToggle("#togetherjs-self-name-display");
+        return;
+      }
+      var val = $("#togetherjs-menu .togetherjs-self-name").val();
+      console.log("values!!", val);
+      if (val) {
+        peers.Self.update({name: val});
+      }
+    });
+
+    $("#togetherjs-menu-update-avatar, #togetherjs-menu-update-avatar-button").click(function () {
+      hideMenu();
+      windowing.show("#togetherjs-avatar-edit");
+    });
+
+    $("#togetherjs-menu-end, #togetherjs-menu-end-button").click(function () {
+      hideMenu();
+      windowing.show("#togetherjs-confirm-end");
+    });
+
+    $("#togetherjs-end-session").click(function () {
+      session.close();
+      //$(".overlay").remove();
+
+    });
+
+    $("#togetherjs-menu-update-color").click(function () {
+      var picker = $("#togetherjs-pick-color");
+      if (picker.is(":visible")) {
+        picker.hide();
+        return;
+      }
+      picker.show();
+      bindPicker();
+      picker.find(".togetherjs-swatch-active").removeClass("togetherjs-swatch-active");
+      picker.find(".togetherjs-swatch[data-color=\"" + peers.Self.color + "\"]").addClass("togetherjs-swatch-active");
+    });
+
+    $("#togetherjs-pick-color").click(".togetherjs-swatch", function (event) {
+      var swatch = $(event.target);
+      var color = swatch.attr("data-color");
+      peers.Self.update({
+        color: color
+      });
+      event.stopPropagation();
+      return false;
+    });
+
+    $("#togetherjs-pick-color").click(function (event) {
+      $("#togetherjs-pick-color").hide();
+      event.stopPropagation();
+      return false;
+    });
+
+    COLORS.forEach(function (color) {
+      var el = templating.sub("swatch");
+      el.attr("data-color", color);
+      var darkened = tinycolor.darken(color);
+      el.css({
+        backgroundColor: color,
+        borderColor: darkened
+      });
+      $("#togetherjs-pick-color").append(el);
+    });
+
+    $("#togetherjs-chat-button").click(function () {
+      windowing.toggle("#togetherjs-chat");
+    });
+
+    session.on("display-window", function (id, element) {
+      if (id == "togetherjs-chat") {
+        if (! $.browser.mobile) {
+          $("#togetherjs-chat-input").focus();
+        }
+      } else if (id == "togetherjs-share") {
+        var link = element.find("input.togetherjs-share-link");
+        if (link.is(":visible")) {
+          link.focus().select();
+        }
+      }
+    });
+
+    container.find("#togetherjs-chat-notifier").click(function (event) {
+      if ($(event.target).is("a") || container.is(".togetherjs-close")) {
+        return;
+      }
+      windowing.show("#togetherjs-chat");
+    });
+
+    // FIXME: Don't think this makes sense
+    $(".togetherjs header.togetherjs-title").each(function (index, item) {
+      var button = $('<button class="togetherjs-minimize"></button>');
+      button.click(function (event) {
+        var window = button.closest(".togetherjs-window");
+        windowing.hide(window);
+      });
+      $(item).append(button);
+    });
+
+    $("#togetherjs-avatar-done").click(function () {
+      ui.displayToggle("#togetherjs-no-avatar-edit");
+    });
+
+    $("#togetherjs-self-color").css({backgroundColor: peers.Self.color});
+
+    var avatar = peers.Self.avatar;
+    if (avatar) {
+      $("#togetherjs-self-avatar").attr("src", avatar);
+    }
+
+    var starterButton = $("#togetherjs-starter button");
+    starterButton.click(function () {
+      windowing.show("#togetherjs-about");
+    }).addClass("togetherjs-running");
+    if (starterButton.text() == "Start TogetherJS") {
+      starterButton.attr("data-start-text", starterButton.text());
+      starterButton.text("End TogetherJS Session");
+    }
+
+    ui.activateAvatarEdit(container, {
+      onSave: function () {
+        windowing.hide("#togetherjs-avatar-edit");
+      }
+    });
+
+    TogetherJS.config.track("inviteFromRoom", function (inviter, previous) {
+      if (inviter) {
+        container.find("#togetherjs-invite").show();
+      } else {
+        container.find("#togetherjs-invite").hide();
+      }
+    });
+
+    container.find("#togetherjs-menu-refresh-invite").click(refreshInvite);
+    container.find("#togetherjs-menu-invite-anyone").click(function () {
+      invite(null);
+    });
+
+    // The following lines should be at the end of this function
+    // (new code goes above)
+    session.emit("new-element", ui.container);
+
+    if (finishedAt && finishedAt > Date.now()) {
+      setTimeout(function () {
+        finishedAt = null;
+        session.emit("ui-ready", ui);
+      }, finishedAt - Date.now());
+    } else {
+      session.emit("ui-ready", ui);
+    }
+
+  }; // End ui.activateUI()
+
+  ui.activateAvatarEdit = function (container, options) {
+    options = options || {};
+    var pendingImage = null;
+
+    container.find(".togetherjs-avatar-save").prop("disabled", true);
+
+    container.find(".togetherjs-avatar-save").click(function () {
+      if (pendingImage) {
+        peers.Self.update({avatar: pendingImage});
+        container.find(".togetherjs-avatar-save").prop("disabled", true);
+        if (options.onSave) {
+          options.onSave();
+        }
+      }
+    });
+
+    container.find(".togetherjs-upload-avatar").on("change", function () {
+      util.readFileImage(this).then(function (url) {
+        sizeDownImage(url).then(function (smallUrl) {
+          pendingImage = smallUrl;
+          container.find(".togetherjs-avatar-preview").css({
+            backgroundImage: 'url(' + pendingImage + ')'
+          });
+          container.find(".togetherjs-avatar-save").prop("disabled", false);
+          if (options.onPending) {
+            options.onPending();
+          }
+        });
+      });
+    });
+
+  };
+
+  function sizeDownImage(imageUrl) {
+    return util.Deferred(function (def) {
+      var $canvas = $("<canvas>");
+      $canvas[0].height = session.AVATAR_SIZE;
+      $canvas[0].width = session.AVATAR_SIZE;
+      var context = $canvas[0].getContext("2d");
+      var img = new Image();
+      img.src = imageUrl;
+      // Sometimes the DOM updates immediately to call
+      // naturalWidth/etc, and sometimes it doesn't; using setTimeout
+      // gives it a chance to catch up
+      setTimeout(function () {
+        var width = img.naturalWidth || img.width;
+        var height = img.naturalHeight || img.height;
+        width = width * (session.AVATAR_SIZE / height);
+        height = session.AVATAR_SIZE;
+        context.drawImage(img, 0, 0, width, height);
+        def.resolve($canvas[0].toDataURL("image/png"));
+      });
+    });
+  }
+
+  function fixupAvatars(container) {
+    /* All <div class="togetherjs-person" /> elements need an element inside,
+       so we add that element here */
+    container.find(".togetherjs-person").each(function () {
+      var $this = $(this);
+      var inner = $this.find(".togetherjs-person-avatar-swatch");
+      if (! inner.length) {
+        $this.append('<div class="togetherjs-person-avatar-swatch"></div>');
+      }
+    });
+  }
+
+  ui.prepareShareLink = function (container) {
+    container.find("input.togetherjs-share-link").click(function () {
+      $(this).select();
+    }).change(function () {
+      updateShareLink();
+    });
+    container.find("a.togetherjs-share-link").click(function () {
+      // FIXME: this is currently opening up Bluetooth, not sharing a link
+      if (false && window.MozActivity) {
+        var activity = new MozActivity({
+          name: "share",
+          data: {
+            type: "url",
+            url: $(this).attr("href")
+          }
+        });
+      }
+      // FIXME: should show some help if you actually try to follow the link
+      // like this, instead of simply suppressing it
+      return false;
+    });
+    updateShareLink();
+  };
+
+  // Menu
+
+  function showMenu(event) {
+    var el = $("#togetherjs-menu");
+    assert(el.length);
+    el.show();
+    bindMenu();
+    $(document).bind("click", maybeHideMenu);
+  }
+
+  function bindMenu() {
+    var el = $("#togetherjs-menu:visible");
+    if (el.length) {
+      var bound = $("#togetherjs-profile-button");
+      var boundOffset = bound.offset();
+      el.css({
+        top: boundOffset.top + bound.height() - $window.scrollTop() + "px",
+        left: (boundOffset.left + bound.width() - 10 - el.width() - $window.scrollLeft()) + "px"
+      });
+    }
+  }
+
+  function bindPicker() {
+    var picker = $("#togetherjs-pick-color:visible");
+    if (picker.length) {
+      var menu = $("#togetherjs-menu-update-color");
+      var menuOffset = menu.offset();
+      picker.css({
+        top: menuOffset.top + menu.height(),
+        left: menuOffset.left
+      });
+    }
+  }
+
+  session.on("resize", function () {
+    bindMenu();
+    bindPicker();
+  });
+
+  function toggleMenu() {
+    if ($("#togetherjs-menu").is(":visible")) {
+      hideMenu();
+    } else {
+      showMenu();
+    }
+  }
+
+  function hideMenu() {
+    var el = $("#togetherjs-menu");
+    el.hide();
+    $(document).unbind("click", maybeHideMenu);
+    ui.displayToggle("#togetherjs-self-name-display");
+    $("#togetherjs-pick-color").hide();
+  }
+
+  function maybeHideMenu(event) {
+    var t = event.target;
+    while (t) {
+      if (t.id == "togetherjs-menu") {
+        // Click inside the menu, ignore this
+        return;
+      }
+      t = t.parentNode;
+    }
+    hideMenu();
+  }
+
+  function adjustDockSize(buttons) {
+    /* Add or remove spots from the dock; positive number to
+       add button(s), negative number to remove button(s)
+       */
+    assert(typeof buttons == "number");
+    assert(buttons && Math.floor(buttons) == buttons);
+    var iface = $("#togetherjs-dock");
+    var newHeight = iface.height() + (BUTTON_HEIGHT * buttons);
+    // pgbovine - set the lower limit to 1 instead of 3 ...
+    assert(newHeight >= BUTTON_HEIGHT * 1, "Height went too low (", newHeight,
+           "), should never be less than 2 buttons high (", BUTTON_HEIGHT * 1, ")");
+    //assert(newHeight >= BUTTON_HEIGHT * 3, "Height went too low (", newHeight,
+    //       "), should never be less than 3 buttons high (", BUTTON_HEIGHT * 3, ")");
+    iface.css({
+      height: newHeight + "px"
+    });
+  }
+
+  // Misc
+
+  function updateShareLink() {
+    var input = $("input.togetherjs-share-link");
+    var link = $("a.togetherjs-share-link");
+    var display = $("#togetherjs-session-id");
+    if (! session.shareId) {
+      input.val("");
+      link.attr("href", "#");
+      display.text("(none)");
+    } else {
+      input.val(session.shareUrl());
+      link.attr("href", session.shareUrl());
+      display.text(session.shareId);
+    }
+  }
+
+  session.on("close", function () {
+
+    if($.browser.mobile) {
+      // remove bg overlay
+      //$(".overlay").remove();
+
+      //after hitting End, reset window draggin
+      $("body").css({
+        "position": "",
+        top: "",
+        left: ""
+      });
+
+    }
+
+    if (ui.container) {
+      ui.container.remove();
+      ui.container = null;
+    }
+    // Clear out any other spurious elements:
+    $(".togetherjs").remove();
+    var starterButton = $("#togetherjs-starter button");
+    starterButton.removeClass("togetherjs-running");
+    if (starterButton.attr("data-start-text")) {
+      starterButton.text(starterButton.attr("data-start-text"));
+      starterButton.attr("data-start-text", "");
+    }
+    if (TogetherJS.startTarget) {
+      var el = $(TogetherJS.startTarget);
+      if (el.attr("data-start-togetherjs-html")) {
+        el.html(el.attr("data-start-togetherjs-html"));
+      }
+      el.removeClass("togetherjs-started");
+    }
+  });
+
+  ui.chat = {
+    text: function (attrs) {
+      assert(typeof attrs.text == "string");
+      assert(attrs.peer);
+      assert(attrs.messageId);
+      var date = attrs.date || Date.now();
+      var lastEl = ui.container.find("#togetherjs-chat .togetherjs-chat-message");
+      if (lastEl.length) {
+        lastEl = $(lastEl[lastEl.length-1]);
+      }
+      var lastDate = null;
+      if (lastEl) {
+        lastDate = parseInt(lastEl.attr("data-date"), 10);
+      }
+      if (lastEl && lastEl.attr("data-person") == attrs.peer.id &&
+          lastDate && date < lastDate + COLLAPSE_MESSAGE_LIMIT) {
+        lastEl.attr("data-date", date);
+        var content = lastEl.find(".togetherjs-chat-content");
+        assert(content.length);
+        attrs.text = content.text() + "\n" + attrs.text;
+        attrs.messageId = lastEl.attr("data-message-id");
+        lastEl.remove();
+      }
+      var el = templating.sub("chat-message", {
+        peer: attrs.peer,
+        content: attrs.text,
+        date: date
+      });
+      linkify(el.find(".togetherjs-chat-content"));
+      el.attr("data-person", attrs.peer.id)
+        .attr("data-date", date)
+        .attr("data-message-id", attrs.messageId);
+      ui.chat.add(el, attrs.messageId, attrs.notify);
+    },
+
+    joinedSession: function (attrs) {
+      assert(attrs.peer);
+      var date = attrs.date || Date.now();
+      var el = templating.sub("chat-joined", {
+        peer: attrs.peer,
+        date: date
+      });
+      // FIXME: should bind the notification to the dock location
+      ui.chat.add(el, attrs.peer.className("join-message-"), 4000);
+    },
+
+    leftSession: function (attrs) {
+      assert(attrs.peer);
+      var date = attrs.date || Date.now();
+      var el = templating.sub("chat-left", {
+        peer: attrs.peer,
+        date: date,
+        declinedJoin: attrs.declinedJoin
+      });
+      // FIXME: should bind the notification to the dock location
+      ui.chat.add(el, attrs.peer.className("join-message-"), 4000);
+    },
+
+    system: function (attrs) {
+      assert(! attrs.peer);
+      assert(typeof attrs.text == "string");
+      var date = attrs.date || Date.now();
+      var el = templating.sub("chat-system", {
+        content: attrs.text,
+        date: date
+      });
+      ui.chat.add(el, undefined, true);
+    },
+
+    clear: deferForContainer(function () {
+      var container = ui.container.find("#togetherjs-chat-messages");
+      container.empty();
+    }),
+
+    urlChange: function (attrs) {
+      assert(attrs.peer);
+      assert(typeof attrs.url == "string");
+      assert(typeof attrs.sameUrl == "boolean");
+      var messageId = attrs.peer.className("url-change-");
+      // FIXME: duplicating functionality in .add():
+      var realId = "togetherjs-chat-" + messageId;
+      var date = attrs.date || Date.now();
+      var title;
+      // FIXME: strip off common domain from msg.url?  E.g., if I'm on
+      // http://example.com/foobar, and someone goes to http://example.com/baz then
+      // show only /baz
+      // FIXME: truncate long titles
+      if (attrs.title) {
+        title = attrs.title + " (" + attrs.url + ")";
+      } else {
+        title = attrs.url;
+      }
+      var el = templating.sub("url-change", {
+        peer: attrs.peer,
+        date: date,
+        href: attrs.url,
+        title: title,
+        sameUrl: attrs.sameUrl
+      });
+      el.find(".togetherjs-nudge").click(function () {
+        attrs.peer.nudge();
+        return false;
+      });
+      el.find(".togetherjs-follow").click(function () {
+        var url = attrs.peer.url;
+        if (attrs.peer.urlHash) {
+          url += attrs.peer.urlHash;
+        }
+        location.href = url;
+      });
+      var notify = ! attrs.sameUrl;
+      if (attrs.sameUrl && ! $("#" + realId).length) {
+        // Don't bother showing a same-url notification, if no previous notification
+        // had been shown
+        return;
+      }
+      ui.chat.add(el, messageId, notify);
+    },
+
+    invite: function (attrs) {
+      assert(attrs.peer);
+      assert(typeof attrs.url == "string");
+      var messageId = attrs.peer.className("invite-");
+      var date = attrs.date || Date.now();
+      var hrefTitle = attrs.url.replace(/\#?&togetherjs=.*/, "").replace(/^\w+:\/\//, "");
+      var el = templating.sub("invite", {
+        peer: attrs.peer,
+        date: date,
+        href: attrs.url,
+        hrefTitle: hrefTitle,
+        forEveryone: attrs.forEveryone
+      });
+      if (attrs.forEveryone) {
+        el.find("a").click(function () {
+          // FIXME: hacky way to do this:
+          chat.submit("Followed link to " + attrs.url);
+        });
+      }
+      ui.chat.add(el, messageId, true);
+    },
+
+    hideTimeout: null,
+
+    add: deferForContainer(function (el, id, notify) {
+      if (id) {
+        el.attr("id", "togetherjs-chat-" + util.safeClassName(id));
+      }
+      var container = ui.container.find("#togetherjs-chat-messages");
+      assert(container.length);
+      var popup = ui.container.find("#togetherjs-chat-notifier");
+      container.append(el);
+      ui.chat.scroll();
+      var doNotify = !! notify;
+      var section = popup.find("#togetherjs-chat-notifier-message");
+      if (notify && visibilityApi.hidden()) {
+        ui.container.find("#togetherjs-notification")[0].play();
+      }
+      if (id && section.data("message-id") == id) {
+        doNotify = true;
+      }
+      if (container.is(":visible")) {
+        doNotify = false;
+      }
+      if (doNotify) {
+        section.empty();
+        section.append(el.clone(true, true));
+        if (section.data("message-id") != id)  {
+          section.data("message-id", id || "");
+          windowing.show(popup);
+        } else if (! popup.is(":visible")) {
+          windowing.show(popup);
+        }
+        if (typeof notify == "number") {
+          // This is the amount of time we're supposed to notify
+          if (this.hideTimeout) {
+            clearTimeout(this.hideTimeout);
+            this.hideTimeout = null;
+          }
+          this.hideTimeout = setTimeout((function () {
+            windowing.hide(popup);
+            this.hideTimeout = null;
+          }).bind(this), notify);
+        }
+      }
+    }),
+
+    scroll: deferForContainer(function () {
+      var container = ui.container.find("#togetherjs-chat-messages")[0];
+      container.scrollTop = container.scrollHeight;
+    })
+
+  };
+
+  session.on("display-window", function (id, win) {
+    if (id == "togetherjs-chat") {
+      ui.chat.scroll();
+      windowing.hide("#togetherjs-chat-notifier");
+    }
+  });
+
+  /* This class is bound to peers.Peer instances as peer.view.
+     The .update() method is regularly called by peer objects when info changes. */
+  ui.PeerView = util.Class({
+
+    constructor: function (peer) {
+      assert(peer.isSelf !== undefined, "PeerView instantiated with non-Peer object");
+      this.peer = peer;
+      this.dockClick = this.dockClick.bind(this);
+    },
+
+    /* Takes an element and sets any person-related attributes on the element
+       Different from updates, which use the class names we set here: */
+    setElement: function (el) {
+      var count = 0;
+      var classes = ["togetherjs-person", "togetherjs-person-status",
+                     "togetherjs-person-name", "togetherjs-person-name-abbrev",
+                     "togetherjs-person-bgcolor", "togetherjs-person-swatch",
+                     "togetherjs-person-status", "togetherjs-person-role",
+                     "togetherjs-person-url", "togetherjs-person-url-title",
+                     "togetherjs-person-bordercolor"];
+      classes.forEach(function (cls) {
+        var els = el.find("." + cls);
+        els.addClass(this.peer.className(cls + "-"));
+        count += els.length;
+      }, this);
+      if (! count) {
+        console.warn("setElement(", el, ") doesn't contain any person items");
+      }
+      this.updateDisplay(el);
+    },
+
+    updateDisplay: deferForContainer(function (container) {
+      container = container || ui.container;
+      var abbrev = this.peer.name;
+      if (this.peer.isSelf) {
+        abbrev = "me";
+      }
+      container.find("." + this.peer.className("togetherjs-person-name-")).text(this.peer.name || "");
+      container.find("." + this.peer.className("togetherjs-person-name-abbrev-")).text(abbrev);
+      var avatarEl = container.find("." + this.peer.className("togetherjs-person-"));
+      if (this.peer.avatar) {
+        util.assertValidUrl(this.peer.avatar);
+        avatarEl.css({
+          backgroundImage: "url(" + this.peer.avatar + ")"
+        });
+      }
+      if (this.peer.idle == "inactive") {
+        avatarEl.addClass("togetherjs-person-inactive");
+      } else {
+        avatarEl.removeClass("togetherjs-person-inactive");
+      }
+      avatarEl.attr("title", this.peer.name);
+      if (this.peer.color) {
+        avatarEl.css({
+          borderColor: this.peer.color
+        });
+        avatarEl.find(".togetherjs-person-avatar-swatch").css({
+          borderTopColor: this.peer.color,
+          borderRightColor: this.peer.color
+        });
+      }
+      if (this.peer.color) {
+        var colors = container.find("." + this.peer.className("togetherjs-person-bgcolor-"));
+        colors.css({
+          backgroundColor: this.peer.color
+        });
+        colors = container.find("." + this.peer.className("togetherjs-person-bordercolor-"));
+        colors.css({
+          borderColor: this.peer.color
+        });
+      }
+      container.find("." + this.peer.className("togetherjs-person-role-"))
+        .text(this.peer.isCreator ? "Creator" : "Participant");
+      var urlName = this.peer.title || "";
+      if (this.peer.title) {
+        urlName += " (";
+      }
+      urlName += util.truncateCommonDomain(this.peer.url, location.href);
+      if (this.peer.title) {
+        urlName += ")";
+      }
+      container.find("." + this.peer.className("togetherjs-person-url-title-"))
+        .text(urlName);
+      var url = this.peer.url;
+      if (this.peer.urlHash) {
+        url += this.peer.urlHash;
+      }
+      container.find("." + this.peer.className("togetherjs-person-url-"))
+        .attr("href", url);
+      // FIXME: should have richer status:
+      container.find("." + this.peer.className("togetherjs-person-status-"))
+        .text(this.peer.idle == "active" ? "Active" : "Inactive");
+      if (this.peer.isSelf) {
+        // FIXME: these could also have consistent/reliable class names:
+        var selfName = $(".togetherjs-self-name");
+        selfName.each((function (index, el) {
+          el = $(el);
+          if (el.val() != this.peer.name) {
+            el.val(this.peer.name);
+          }
+        }).bind(this));
+        $("#togetherjs-menu-avatar").attr("src", this.peer.avatar);
+        if (! this.peer.name) {
+          $("#togetherjs-menu .togetherjs-person-name-self").text(this.peer.defaultName);
+        }
+      }
+      if (this.peer.url != session.currentUrl()) {
+        container.find("." + this.peer.className("togetherjs-person-"))
+            .addClass("togetherjs-person-other-url");
+      } else {
+        container.find("." + this.peer.className("togetherjs-person-"))
+            .removeClass("togetherjs-person-other-url");
+      }
+      if (this.peer.following) {
+        if (this.followCheckbox) {
+          this.followCheckbox.prop("checked", true);
+        }
+      } else {
+        if (this.followCheckbox) {
+          this.followCheckbox.prop("checked", false);
+        }
+      }
+      // FIXME: add some style based on following?
+      updateChatParticipantList();
+      this.updateFollow();
+    }),
+
+    update: function () {
+      if (! this.peer.isSelf) {
+        if (this.peer.status == "live") {
+          this.dock();
+        } else {
+          this.undock();
+        }
+      }
+      this.updateDisplay();
+      this.updateUrlDisplay();
+    },
+
+    updateUrlDisplay: function (force) {
+      var url = this.peer.url;
+      if ((! url) || (url == this._lastUpdateUrlDisplay && ! force)) {
+        return;
+      }
+      this._lastUpdateUrlDisplay = url;
+      var sameUrl = url == session.currentUrl();
+      ui.chat.urlChange({
+        peer: this.peer,
+        url: this.peer.url,
+        title: this.peer.title,
+        sameUrl: sameUrl
+      });
+    },
+
+    urlNudge: function () {
+      // FIXME: do something more distinct here
+      this.updateUrlDisplay(true);
+    },
+
+    notifyJoined: function () {
+      ui.chat.joinedSession({
+        peer: this.peer
+      });
+    },
+
+    // when there are too many participants in the dock, consolidate the participants to one avatar, and on mouseOver, the dock expands down to reveal the rest of the participants
+    // if there are X users in the session
+    // then hide the users in the dock
+    // and shrink the size of the dock
+    // and if you rollover the dock, it expands and reveals the rest of the participants in the dock
+
+    //if users hit X then show the participant button with the consol
+
+    dock: deferForContainer(function () {
+
+      var numberOfUsers = peers.getAllPeers().length;
+
+      // collapse the Dock if too many users
+      function CollapsedDock() {
+        // decrease/reset dock height
+        $("#togetherjs-dock").css("height", 260);
+        //replace participant button
+        $("#togetherjs-dock-participants").replaceWith("<button id='togetherjs-participantlist-button' class='togetherjs-button'><div class='togetherjs-tooltip togetherjs-dock-person-tooltip'><span class='togetherjs-person-name'>Participants</span><span class='togetherjs-person-tooltip-arrow-r'></span></div><div class='togetherjs-person togetherjs-person-status-overlay' title='Participant List' style='background-image: url(http://localhost:8888/togetherjs/images/robot-avatar.png); border-color: rgb(255, 0, 0);'></div></button>");
+        // new full participant window created on toggle
+        $("#togetherjs-participantlist-button").click(function () {
+          windowing.toggle("#togetherjs-participantlist");
+        });
+      }
+
+      // FIXME: turned off for now
+      if( numberOfUsers >= 5 && false) {
+        CollapsedDock();
+      } else {
+        // reset
+
+      }
+
+
+      if (this.dockElement) {
+        return;
+      }
+      this.dockElement = templating.sub("dock-person", {
+        peer: this.peer
+      });
+      this.dockElement.attr("id", this.peer.className("togetherjs-dock-element-"));
+      ui.container.find("#togetherjs-dock-participants").append(this.dockElement);
+      this.dockElement.find(".togetherjs-person").animateDockEntry();
+      adjustDockSize(1);
+      this.detailElement = templating.sub("participant-window", {
+        peer: this.peer
+      });
+      var followId = this.peer.className("togetherjs-person-status-follow-");
+      this.detailElement.find('[for="togetherjs-person-status-follow"]').attr("for", followId);
+      this.detailElement.find('#togetherjs-person-status-follow').attr("id", followId);
+      this.detailElement.find(".togetherjs-follow").click(function () {
+        location.href = $(this).attr("href");
+      });
+      this.detailElement.find(".togetherjs-nudge").click((function () {
+        this.peer.nudge();
+      }).bind(this));
+      this.followCheckbox = this.detailElement.find("#" + followId);
+      this.followCheckbox.change(function () {
+        if (! this.checked) {
+          this.peer.unfollow();
+        }
+        // Following doesn't happen until the window is closed
+        // FIXME: should we tell the user this?
+      });
+      this.maybeHideDetailWindow = this.maybeHideDetailWindow.bind(this);
+      session.on("hide-window", this.maybeHideDetailWindow);
+      ui.container.append(this.detailElement);
+      this.dockElement.click((function () {
+        if (this.detailElement.is(":visible")) {
+          windowing.hide(this.detailElement);
+        } else {
+          windowing.show(this.detailElement, {bind: this.dockElement});
+          this.scrollTo();
+          this.cursor().element.animate({
+            opacity:0.3
+          }).animate({
+            opacity:1
+          }).animate({
+            opacity:0.3
+          }).animate({
+            opacity:1
+          });
+        }
+      }).bind(this));
+      this.updateFollow();
+    }),
+
+    undock: function () {
+      if (! this.dockElement) {
+        return;
+      }
+      this.dockElement.animateDockExit().promise().then((function () {
+        this.dockElement.remove();
+        this.dockElement = null;
+        this.detailElement.remove();
+        this.detailElement = null;
+        adjustDockSize(-1);
+      }).bind(this));
+    },
+
+    scrollTo: function () {
+      if (this.peer.url != session.currentUrl()) {
+        return;
+      }
+      var pos = this.peer.scrollPosition;
+      if (! pos) {
+        console.warn("Peer has no scroll position:", this.peer);
+        return;
+      }
+      pos = elementFinder.pixelForPosition(pos);
+      $("html, body").easeTo(pos);
+    },
+
+    updateFollow: function () {
+      if (! this.peer.url) {
+        return;
+      }
+      if (! this.detailElement) {
+        return;
+      }
+      var same = this.detailElement.find(".togetherjs-same-url");
+      var different = this.detailElement.find(".togetherjs-different-url");
+      if (this.peer.url == session.currentUrl()) {
+        same.show();
+        different.hide();
+      } else {
+        same.hide();
+        different.show();
+      }
+    },
+
+    maybeHideDetailWindow: function (windows) {
+      if (this.detailElement && windows[0] && windows[0][0] === this.detailElement[0]) {
+        if (this.followCheckbox[0].checked) {
+          this.peer.follow();
+        } else {
+          this.peer.unfollow();
+        }
+      }
+    },
+
+    dockClick: function () {
+      // FIXME: scroll to person
+    },
+
+    cursor: function () {
+      return require("cursor").getClient(this.peer.id);
+    },
+
+    destroy: function () {
+      // FIXME: should I get rid of the dockElement?
+      session.off("hide-window", this.maybeHideDetailWindow);
+    }
+  });
+
+  function updateChatParticipantList() {
+    var live = peers.getAllPeers(true);
+    if (live.length) {
+      ui.displayToggle("#togetherjs-chat-participants");
+      $("#togetherjs-chat-participant-list").text(
+        live.map(function (p) {return p.name;}).join(", "));
+    } else {
+      ui.displayToggle("#togetherjs-chat-no-participants");
+    }
+  }
+
+  function inviteHubUrl() {
+    var base = TogetherJS.config.get("inviteFromRoom");
+    assert(base);
+    return util.makeUrlAbsolute(base, session.hubUrl());
+  }
+
+  var inRefresh = false;
+
+  function refreshInvite() {
+    if (inRefresh) {
+      return;
+    }
+    inRefresh = true;
+    require(["who"], function (who) {
+      var def = who.getList(inviteHubUrl());
+      function addUser(user, before) {
+        var item = templating.sub("invite-user-item", {peer: user});
+        item.attr("data-clientid", user.id);
+        if (before) {
+          item.insertBefore(before);
+        } else {
+          $("#togetherjs-invite-users").append(item);
+        }
+        item.click(function() {
+          invite(user.clientId);
+        });
+      }
+      function refresh(users, finished) {
+        var sorted = [];
+        for (var id in users) {
+          if (users.hasOwnProperty(id)) {
+            sorted.push(users[id]);
+          }
+        }
+        sorted.sort(function (a, b) {
+          return a.name < b.name ? -1 : 1;
+        });
+        var pos = 0;
+        ui.container.find("#togetherjs-invite-users .togetherjs-menu-item").each(function () {
+          var $this = $(this);
+          if (finished && ! users[$this.attr("data-clientid")]) {
+            $this.remove();
+            return;
+          }
+          if (pos >= sorted.length) {
+            return;
+          }
+          while (pos < sorted.length && $this.attr("data-clientid") !== sorted[pos].id) {
+            addUser(sorted[pos], $this);
+            pos++;
+          }
+          while (pos < sorted.length && $this.attr("data-clientid") == sorted[pos].id) {
+            pos++;
+          }
+        });
+        for (var i=pos; i<sorted.length; i++) {
+          addUser(sorted[pos]);
+        }
+      }
+      def.then(function (users) {
+        refresh(users, true);
+        inRefresh = false;
+      });
+      def.progress(refresh);
+    });
+  }
+
+  session.hub.on("invite", function (msg) {
+    if (msg.forClientId && msg.clientId != peers.Self.id) {
+      return;
+    }
+    require(["who"], function (who) {
+      var peer = who.ExternalPeer(msg.userInfo.clientId, msg.userInfo);
+      ui.chat.invite({peer: peer, url: msg.url, forEveryone: ! msg.forClientId});
+    });
+  });
+
+  function invite(clientId) {
+    require(["who"], function (who) {
+      // FIXME: use the return value of this to give a signal that
+      // the invite has been successfully sent:
+      who.invite(inviteHubUrl(), clientId).then(function () {
+        hideMenu();
+      });
+    });
+  }
+
+  ui.showUrlChangeMessage = deferForContainer(function (peer, url) {
+    var window = templating.sub("url-change", {peer: peer});
+    ui.container.append(window);
+    windowing.show(window);
+  });
+
+  session.hub.on("url-change-nudge", function (msg) {
+    if (msg.to && msg.to != session.clientId) {
+      // Not directed to us
+      return;
+    }
+    msg.peer.urlNudge();
+  });
+
+  session.on("new-element", function (el) {
+    if (TogetherJS.config.get("toolName")) {
+      ui.updateToolName(el);
+    }
+  });
+
+  var setToolName = false;
+  ui.updateToolName = function (container) {
+    container = container || $(document.body);
+    var name = TogetherJS.config.get("toolName");
+    if (setToolName && ! name) {
+      name = "TogetherJS";
+    }
+    if (name) {
+      container.find(".togetherjs-tool-name").text(name);
+      setToolName = true;
+    }
+  };
+
+  TogetherJS.config.track("toolName", function (name) {
+    ui.updateToolName(ui.container);
+  });
+
+  return ui;
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('playback',["jquery", "util", "session", "storage", "require"], function ($, util, session, storage, require) {
+  var playback = util.Module("playback");
+  var assert = util.assert;
+
+  var ALWAYS_REPLAY = {
+    "cursor-update": true,
+    "scroll-update": true
+  };
+
+  playback.getLogs = function (url) {
+    if (url.search(/^local:/) === 0) {
+      return $.Deferred(function (def) {
+        storage.get("recording." + url.substr("local:".length)).then(function (logs) {
+          if (! logs) {
+            def.resolve(null);
+            return;
+          }
+          logs = parseLogs(logs);
+          def.resolve(logs);
+        }, function (error) {
+          def.reject(error);
+        });
+      });
+    }
+    return $.Deferred(function (def) {
+      $.ajax({
+        url: url,
+        dataType: "text"
+      }).then(
+        function (logs) {
+          logs = parseLogs(logs);
+          def.resolve(logs);
+        },
+        function (error) {
+          def.reject(error);
+        });
+    });
+  };
+
+  function parseLogs(logs) {
+    logs = logs.replace(/\r\n/g, '\n');
+    logs = logs.split(/\n/g);
+    var result = [];
+    for (var i=0; i<logs.length; i++) {
+      var line = logs[i];
+      line = line.replace(/^\s+/, "").replace(/\s+$/, "");
+      if (line.search(/\/\*/) === 0) {
+        var last = line.search(/\*\//);
+        if (last == -1) {
+          console.warn("bad line:", line);
+          continue;
+        }
+        line = line.substr(last+2);
+      }
+      line = line.replace(/^\s+/, "");
+      if (! line) {
+        continue;
+      }
+      line = JSON.parse(line);
+      result.push(line);
+    }
+    return Logs(result);
+  }
+
+  var Logs = util.Class({
+    constructor: function (logs, fromStorage) {
+      this.logs = logs;
+      this.fromStorage = fromStorage;
+      this.pos = 0;
+    },
+
+    play: function () {
+      this.start = Date.now();
+      if (this.pos >= this.logs.length) {
+        this.unload();
+        return;
+      }
+      if (this.pos !== 0) {
+        // First we need to play the hello
+        var toReplay = [];
+        var foundHello = false;
+        for (var i=this.pos-1; i>=0; i--) {
+          var item = this.logs[i];
+          if (ALWAYS_REPLAY[item.type]) {
+            toReplay.push(item);
+          }
+          if (item.type == "hello" || item.type == "hello-back") {
+            this.playItem(item);
+            foundHello = true;
+            break;
+          }
+        }
+        if (! foundHello) {
+          console.warn("No hello message found before position", this.pos);
+        }
+        toReplay.reverse();
+        for (i=0; i<toReplay.length; i++) {
+          this.playItem(toReplay[i]);
+        }
+      }
+      this.playOne();
+    },
+
+    cancel: function () {
+      if (this.playTimer) {
+        clearTimeout(this.playTimer);
+        this.playTimer = null;
+      }
+      this.start = null;
+      this.pos = 0;
+      this.unload();
+    },
+
+    pause: function () {
+      if (this.playTimer) {
+        clearTimeout(this.playTimer);
+        this.playTimer = null;
+      }
+    },
+
+    playOne: function () {
+      this.playTimer = null;
+      if (this.pos >= this.logs.length) {
+        this.unload();
+        return;
+      }
+      var item = this.logs[this.pos];
+      this.playItem(item);
+      this.pos++;
+      if (this.pos >= this.logs.length) {
+        this.unload();
+        return;
+      }
+      var next = this.logs[this.pos];
+      var pause = next.date - item.date;
+      this.playTimer = setTimeout(this.playOne.bind(this), pause);
+      if (this.fromStorage) {
+        this.savePos();
+      }
+    },
+
+    playItem: function (item) {
+      if (item.type == "hello") {
+        // We may need to pause here
+        if (item.url != (location.href+"").replace(/\#.*/, "")) {
+          this.pause();
+        }
+      }
+      try {
+        session._getChannel().onmessage(item);
+      } catch (e) {
+        console.warn("Could not play back message:", item, "error:", e);
+      }
+    },
+
+    save: function () {
+      this.fromStorage = true;
+      storage.set("playback.logs", this.logs);
+      this.savePos();
+    },
+
+    savePos: function () {
+      storage.set("playback.pos", this.pos);
+    },
+
+    unload: function () {
+      if (this.fromStorage) {
+        storage.set("playback.logs", undefined);
+        storage.set("playback.pos", undefined);
+      }
+      // FIXME: should do a bye message here
+    }
+
+  });
+
+  playback.getRunningLogs = function () {
+    return storage.get("playback.logs").then(function (value) {
+      if (! value) {
+        return null;
+      }
+      var logs = Logs(value, true);
+      return storage.get("playback.pos").then(function (pos) {
+        pos = pos || 0;
+        logs.pos = pos;
+        return logs;
+      });
+    });
+  };
+
+  return playback;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+/*jshint evil:true */
+define('chat',["require", "jquery", "util", "session", "ui", "templates", "playback", "storage", "peers", "windowing"], function (require, $, util, session, ui, templates, playback, storage, peers, windowing) {
+  var chat = util.Module("chat");
+  var assert = util.assert;
+  var Walkabout;
+
+  session.hub.on("chat", function (msg) {
+    ui.chat.text({
+      text: msg.text,
+      peer: msg.peer,
+      // FIXME: a little unsure of trusting this (maybe I should prefix it?)
+      messageId: msg.messageId,
+      notify: true
+    });
+    saveChatMessage({
+      text: msg.text,
+      date: Date.now(),
+      peerId: msg.peer.id,
+      messageId: msg.messageId
+    });
+  });
+
+  // FIXME: this doesn't really belong in this module:
+  session.hub.on("bye", function (msg) {
+    ui.chat.leftSession({
+      peer: msg.peer,
+      declinedJoin: msg.reason == "declined-join"
+    });
+  });
+
+  chat.submit = function (message) {
+    var parts = message.split(/ /);
+    if (parts[0].charAt(0) == "/") {
+      var name = parts[0].substr(1).toLowerCase();
+      var method = commands["command_" + name];
+      if (method) {
+        method.apply(null, parts.slice(1));
+        return;
+      }
+    }
+    var messageId = session.clientId + "-" + Date.now();
+    session.send({
+      type: "chat",
+      text: message,
+      messageId: messageId
+    });
+    ui.chat.text({
+      text: message,
+      peer: peers.Self,
+      messageId: messageId,
+      notify: false
+    });
+    saveChatMessage({
+      text: message,
+      date: Date.now(),
+      peerId: peers.Self.id,
+      messageId: messageId
+    });
+  };
+
+  var commands = {
+    command_help: function () {
+      var msg = util.trim(templates("help"));
+      ui.chat.system({
+        text: msg
+      });
+    },
+
+    command_test: function (args) {
+      if (! Walkabout) {
+        require(["walkabout"], (function (WalkaboutModule) {
+          Walkabout = WalkaboutModule;
+          this.command_test(args);
+        }).bind(this));
+        return;
+      }
+      args = util.trim(args || "").split(/\s+/g);
+      if (args[0] === "" || ! args.length) {
+        if (this._testCancel) {
+          args = ["cancel"];
+        } else {
+          args = ["start"];
+        }
+      }
+      if (args[0] == "cancel") {
+        ui.chat.system({
+          text: "Aborting test"
+        });
+        this._testCancel();
+        this._testCancel = null;
+        return;
+      }
+      if (args[0] == "start") {
+        var times = parseInt(args[1], 10);
+        if (isNaN(times) || ! times) {
+          times = 100;
+        }
+        ui.chat.system({
+          text: "Testing with walkabout.js"
+        });
+        var tmpl = $(templates("walkabout"));
+        var container = ui.container.find(".togetherjs-test-container");
+        container.empty();
+        container.append(tmpl);
+        container.show();
+        var statusContainer = container.find(".togetherjs-status");
+        statusContainer.text("starting...");
+        this._testCancel = Walkabout.runManyActions({
+          ondone: function () {
+            statusContainer.text("done");
+            statusContainer.one("click", function () {
+              container.hide();
+            });
+            this._testCancel = null;
+          },
+          onstatus: function (status) {
+            var note = "actions: " + status.actions.length + " running: " +
+              (status.times - status.remaining) + " / " + status.times;
+            statusContainer.text(note);
+          }
+        });
+        return;
+      }
+      if (args[0] == "show") {
+        if (this._testShow.length) {
+          this._testShow.forEach(function (item) {
+            if (item) {
+              item.remove();
+            }
+          }, this);
+          this._testShow = [];
+        } else {
+          var actions = Walkabout.findActions();
+          actions.forEach(function (action) {
+            this._testShow.push(action.show());
+          }, this);
+        }
+        return;
+      }
+      if (args[0] == "describe") {
+        Walkabout.findActions().forEach(function (action) {
+          ui.chat.system({
+            text: action.description()
+          });
+        }, this);
+        return;
+      }
+      ui.chat.system({
+        text: "Did not understand: " + args.join(" ")
+      });
+    },
+
+    _testCancel: null,
+    _testShow: [],
+
+    command_clear: function () {
+      ui.chat.clear();
+    },
+
+    command_exec: function () {
+      var expr = Array.prototype.slice.call(arguments).join(" ");
+      var result;
+      // We use this to force global eval (not in this scope):
+      var e = eval;
+      try {
+        result = e(expr);
+      } catch (error) {
+        ui.chat.system({
+          text: "Error: " + error
+        });
+      }
+      if (result !== undefined) {
+        ui.chat.system({
+          text: "" + result
+        });
+      }
+    },
+
+    command_record: function () {
+      ui.chat.system({
+        text: "When you see the robot appear, the recording will have started"
+      });
+      window.open(
+        session.recordUrl(), "_blank",
+        "left,width=" + ($(window).width() / 2));
+    },
+
+    playing: null,
+
+    command_playback: function (url) {
+      if (this.playing) {
+        this.playing.cancel();
+        this.playing.unload();
+        this.playing = null;
+        ui.chat.system({
+          text: "playback cancelled"
+        });
+        return;
+      }
+      if (! url) {
+        ui.chat.system({
+          text: "Nothing is playing"
+        });
+        return;
+      }
+      var logLoader = playback.getLogs(url);
+      logLoader.then(
+        (function (logs) {
+          if (! logs) {
+            ui.chat.system({
+              text: "No logs found."
+            });
+            return;
+          }
+          logs.save();
+          this.playing = logs;
+          logs.play();
+        }).bind(this),
+        function (error) {
+          ui.chat.system({
+            text: "Error fetching " + url + ":\n" + JSON.stringify(error, null, "  ")
+          });
+        });
+      windowing.hide("#togetherjs-chat");
+    },
+
+    command_savelogs: function (name) {
+      session.send({
+        type: "get-logs",
+        forClient: session.clientId,
+        saveAs: name
+      });
+      function save(msg) {
+        if (msg.request.forClient == session.clientId && msg.request.saveAs == name) {
+          storage.set("recording." + name, msg.logs).then(function () {
+            session.hub.off("logs", save);
+            ui.chat.system({
+              text: "Saved as local:" + name
+            });
+          });
+        }
+      }
+      session.hub.on("logs", save);
+    },
+
+    command_baseurl: function (url) {
+      if (! url) {
+        storage.get("baseUrlOverride").then(function (b) {
+          if (b) {
+            ui.chat.system({
+              text: "Set to: " + b.baseUrl
+            });
+          } else {
+            ui.chat.system({
+              text: "No baseUrl override set"
+            });
+          }
+        });
+        return;
+      }
+      url = url.replace(/\/*$/, "");
+      ui.chat.system({
+        text: "If this goes wrong, do this in the console to reset:\n  localStorage.setItem('togetherjs.baseUrlOverride', null)"
+      });
+      storage.set("baseUrlOverride", {
+        baseUrl: url,
+        expiresAt: Date.now() + (1000 * 60 * 60 * 24)
+      }).then(function () {
+        ui.chat.system({
+          text: "baseUrl overridden (to " + url + "), will last for one day."
+        });
+      });
+    },
+
+    command_config: function (variable, value) {
+      if (! (variable || value)) {
+        storage.get("configOverride").then(function (c) {
+          if (c) {
+            util.forEachAttr(c, function (value, attr) {
+              if (attr == "expiresAt") {
+                return;
+              }
+              ui.chat.system({
+                text: "  " + attr + " = " + JSON.stringify(value)
+              });
+            });
+            ui.chat.system({
+              text: "Config expires at " + (new Date(c.expiresAt))
+            });
+          } else {
+            ui.chat.system({
+              text: "No config override"
+            });
+          }
+        });
+        return;
+      }
+      if (variable == "clear") {
+        storage.set("configOverride", undefined);
+        ui.chat.system({
+          text: "Clearing all overridden configuration"
+        });
+        return;
+      }
+      console.log("config", [variable, value]);
+      if (! (variable && value)) {
+        ui.chat.system({
+          text: "Error: must provide /config VAR VALUE"
+        });
+        return;
+      }
+      try {
+        value = JSON.parse(value);
+      } catch (e) {
+        ui.chat.system({
+          text: "Error: value (" + value + ") could not be parsed: " + e
+        });
+        return;
+      }
+      if (! TogetherJS._defaultConfiguration.hasOwnProperty(variable)) {
+        ui.chat.system({
+          text: "Warning: variable " + variable + " is unknown"
+        });
+      }
+      storage.get("configOverride").then(function (c) {
+        c = c || {};
+        c[variable] = value;
+        c.expiresAt = Date.now() + (1000 * 60 * 60 * 24);
+        storage.set("configOverride", c).then(function () {
+          ui.chat.system({
+            text: "Variable " + variable + " = " + JSON.stringify(value) + "\nValue will be set for one day."
+          });
+        });
+      });
+    }
+
+  };
+
+  // this section deal with saving/restoring chat history as long as session is alive
+  var chatStorageKey = "chatlog";
+  var maxLogMessages = 100;
+
+  function saveChatMessage(obj) {
+    assert(obj.peerId);
+    assert(obj.messageId);
+    assert(obj.date);
+    assert(typeof obj.text == "string");
+
+    loadChatLog().then(function (log) {
+      for (var i = log.length - 1; i >= 0; i--) {
+        if (log[i].messageId === obj.messageId) {
+          return;
+        }
+      }
+      log.push(obj);
+      if (log.length > maxLogMessages) {
+        log.splice(0, log.length - maxLogMessages);
+      }
+      storage.tab.set(chatStorageKey, log);
+    });
+  }
+
+  function loadChatLog() {
+    return storage.tab.get(chatStorageKey, []);
+  }
+
+  session.once("ui-ready", function () {
+    loadChatLog().then(function (log) {
+      if (! log) {
+        return;
+      }
+      for (var i = 0; i < log.length; i++) {
+        // peers should already be loaded from sessionStorage by the peers module
+        // maybe i should use a try catch block here
+        var currentPeer = peers.getPeer(log[i].peerId);
+        ui.chat.text({
+          text: log[i].text,
+          date: log[i].date,
+          peer: currentPeer,
+          messageId: log[i].messageId
+        });
+      }
+    });
+  });
+  //delete chat log
+  session.on("close", function(){
+    storage.tab.set(chatStorageKey, undefined);
+  });
+
+  return chat;
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define('console',["util"], function (util) {
+
+  var console = window.console || {log: function () {}};
+
+  var Console = util.Class({
+    constructor: function () {
+      this.messages = [];
+      this.level = this.levels.log;
+    },
+
+    messageLimit: 100,
+
+    levels: {
+      debug: 1,
+      // FIXME: I'm considering *not* wrapping console.log, and strictly keeping
+      // it as a debugging tool; also line numbers would be preserved
+      log: 2,
+      info: 3,
+      notify: 4,
+      warn: 5,
+      error: 6,
+      fatal: 7
+    },
+
+    // Gets set below:
+    maxLevel: 0,
+
+    consoleLevels: [
+      [],
+      console.debug || [],
+      console.log || [],
+      console.info || [],
+      console.notify || [],
+      console.warn || [],
+      console.error || [],
+      console.fatal || []
+    ],
+
+    levelNames: {},
+
+    setLevel: function (l) {
+      var number;
+      if (typeof l == "string") {
+        number = this.levels[l];
+        if (number === undefined) {
+          throw new Error("Tried to set Console level to unknown level string: " + l);
+        }
+        l = number;
+      }
+      if (typeof l == "function") {
+        number = this.consoleLevels.indexOf(l);
+        if (number == -1) {
+          throw new Error("Tried to set Console level based on unknown console function: " + l);
+        }
+        l = number;
+      }
+      if (typeof l == "number") {
+        if (l < 0) {
+          throw new Error("Console level must be 0 or larger: " + l);
+        } else if (l > this.maxLevel) {
+          throw new Error("Console level must be " + this.maxLevel + " or smaller: " + l);
+        }
+      }
+      this.level = l;
+    },
+
+    write: function (level) {
+      try {
+        this.messages.push([
+          Date.now(),
+          level,
+          this._stringify(Array.prototype.slice.call(arguments, 1))
+        ]);
+      } catch (e) {
+        console.warn("Error stringifying argument:", e);
+      }
+      if (level != "suppress" && this.level <= level) {
+        var method = console[this.levelNames[level]];
+        if (! method) {
+          method = console.log;
+        }
+        method.apply(console, Array.prototype.slice.call(arguments, 1));
+      }
+    },
+
+    suppressedWrite: function () {
+      this.write.apply(this, ["suppress"].concat(Array.prototype.slice.call(arguments)));
+    },
+
+    trace: function (level) {
+      level = level || 'log';
+      if (console.trace) {
+        level = "suppressedWrite";
+      }
+      try {
+        throw new Error();
+      } catch (e) {
+        // FIXME: trim this frame
+        var stack = e.stack;
+        stack = stack.replace(/^[^\n]*\n/, "");
+        this[level](stack);
+      }
+      if (console.trace) {
+        console.trace();
+      }
+    },
+
+    _browserInfo: function () {
+      // FIXME: add TogetherJS version and
+      return [
+        "TogetherJS base URL: " + TogetherJS.baseUrl,
+        "User Agent: " + navigator.userAgent,
+        "Page loaded: " + this._formatDate(TogetherJS.pageLoaded),
+        "Age: " + this._formatMinutes(Date.now() - TogetherJS.pageLoaded) + " minutes",
+        // FIXME: make this right:
+        //"Window: height: " + window.screen.height + " width: " + window.screen.width
+        "URL: " + location.href,
+        "------+------+----------------------------------------------"
+      ];
+    },
+
+    _stringify: function (args) {
+      var s = "";
+      for (var i=0; i<args.length; i++) {
+        if (s) {
+          s += " ";
+        }
+        s += this._stringifyItem(args[i]);
+      }
+      return s;
+    },
+
+    _stringifyItem: function (item) {
+      if (typeof item == "string") {
+        if (item === "") {
+          return '""';
+        }
+        return item;
+      }
+      if (typeof item == "object" && item.repr) {
+        try {
+          return item.repr();
+        } catch (e) {
+          console.warn("Error getting object repr:", item, e);
+        }
+      }
+      if (item !== null && typeof item == "object") {
+        // FIXME: this can drop lots of kinds of values, like a function or undefined
+        item = JSON.stringify(item);
+      }
+      return item.toString();
+    },
+
+    _formatDate: function (timestamp) {
+      return (new Date(timestamp)).toISOString();
+    },
+
+    _formatTime: function (timestamp) {
+      return ((timestamp - TogetherJS.pageLoaded) / 1000).toFixed(2);
+    },
+
+    _formatMinutes: function (milliseconds) {
+      var m = Math.floor(milliseconds / 1000 / 60);
+      var remaining = milliseconds - (m * 1000 * 60);
+      if (m > 10) {
+        // Over 10 minutes, just ignore the seconds
+        return m;
+      }
+      var seconds = Math.floor(remaining / 1000) + "";
+      m += ":";
+      seconds = lpad(seconds, 2, "0");
+      m += seconds;
+      if (m == "0:00") {
+        m += ((remaining / 1000).toFixed(3) + "").substr(1);
+      }
+      return m;
+    },
+
+    _formatLevel: function (l) {
+      if (l === "suppress") {
+        return "";
+      }
+      return this.levelNames[l];
+    },
+
+    toString: function () {
+      try {
+        var lines = this._browserInfo();
+        this.messages.forEach(function (m) {
+          lines.push(lpad(this._formatTime(m[0]), 6) + " " + rpad(this._formatLevel(m[1]), 6) + " " + lpadLines(m[2], 14));
+        }, this);
+        return lines.join("\n");
+      } catch (e) {
+        // toString errors can otherwise be swallowed:
+        console.warn("Error running console.toString():", e);
+        throw e;
+      }
+    },
+
+    submit: function (options) {
+      // FIXME: friendpaste is broken for this
+      // (and other pastebin sites aren't really Browser-accessible)
+      return util.Deferred(function (def) {
+        options = options || {};
+        var site = options.site || TogetherJS.config.get("pasteSite") || "https://www.friendpaste.com/";
+        var req = new XMLHttpRequest();
+        req.open("POST", site);
+        req.setRequestHeader("Content-Type", "application/json");
+        req.send(JSON.stringify({
+          "title": options.title || "TogetherJS log file",
+          "snippet": this.toString(),
+          "language": "text"
+        }));
+        req.onreadystatechange = function () {
+          if (req.readyState === 4) {
+            var data = JSON.parse(req.responseText);
+          }
+        };
+      });
+    }
+
+  });
+
+  function rpad(s, len, pad) {
+    s = s + "";
+    pad = pad || " ";
+    while (s.length < len) {
+      s += pad;
+    }
+    return s;
+  }
+
+  function lpad(s, len, pad) {
+    s = s + "";
+    pad = pad || " ";
+    while (s.length < len) {
+      s = pad + s;
+    }
+    return s;
+  }
+
+  function lpadLines(s, len, pad) {
+    var i;
+    s = s + "";
+    if (s.indexOf("\n") == -1) {
+      return s;
+    }
+    pad = pad || " ";
+    var fullPad = "";
+    for (i=0; i<len; i++) {
+      fullPad += pad;
+    }
+    s = s.split(/\n/g);
+    for (i=1; i<s.length; i++) {
+      s[i] = fullPad + s[i];
+    }
+    return s.join("\n");
+  }
+
+
+
+  // This is a factory that creates `Console.prototype.debug`, `.error` etc:
+  function logFunction(name, level) {
+    return function () {
+      this.write.apply(this, [level].concat(Array.prototype.slice.call(arguments)));
+    };
+  }
+
+  util.forEachAttr(Console.prototype.levels, function (value, name) {
+    Console.prototype[name] = logFunction(name, value);
+    Console.prototype.maxLevel = Math.max(Console.prototype.maxLevel, value);
+  });
+
+  util.forEachAttr(Console.prototype.levels, function (value, name) {
+    Console.prototype.levelNames[value] = name;
+  });
+
+  var appConsole = Console();
+
+  appConsole.ConsoleClass = Console;
+
+  return appConsole;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('eventMaker',["jquery", "util"], function ($, util) {
+  var eventMaker = util.Module("eventMaker");
+
+  eventMaker.performClick = function (target) {
+    // FIXME: should accept other parameters, like Ctrl/Alt/etc
+    var event = document.createEvent("MouseEvents");
+    event.initMouseEvent(
+      "click", // type
+      true, // canBubble
+      true, // cancelable
+      window, // view
+      0, // detail
+      0, // screenX
+      0, // screenY
+      0, // clientX
+      0, // clientY
+      false, // ctrlKey
+      false, // altKey
+      false, // shiftKey
+      false, // metaKey
+      0, // button
+      null // relatedTarget
+    );
+    // FIXME: I'm not sure this custom attribute always propagates?
+    // seems okay in Firefox/Chrome, but I've had problems with
+    // setting attributes on keyboard events in the past.
+    event.togetherjsInternal = true;
+    target = $(target)[0];
+    var cancelled = target.dispatchEvent(event);
+    if (cancelled) {
+      return;
+    }
+    if (target.tagName == "A") {
+      var href = target.href;
+      if (href) {
+        location.href = href;
+        return;
+      }
+    }
+    // FIXME: should do button clicks (like a form submit)
+    // FIXME: should run .onclick() as well
+  };
+
+  eventMaker.fireChange = function (target) {
+    target = $(target)[0];
+    var event = document.createEvent("HTMLEvents");
+    event.initEvent("change", true, true);
+    target.dispatchEvent(event);
+  };
+
+  return eventMaker;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// Cursor viewing support
+
+define('cursor',["jquery", "ui", "util", "session", "elementFinder", "tinycolor", "eventMaker", "peers", "templating"], function ($, ui, util, session, elementFinder, tinycolor, eventMaker, peers, templating) {
+  var assert = util.assert;
+  var cursor = util.Module("cursor");
+
+  var FOREGROUND_COLORS = ["#111", "#eee"];
+  var CURSOR_HEIGHT = 50;
+  var CURSOR_ANGLE = (35 / 180) * Math.PI;
+  var CURSOR_WIDTH = Math.ceil(Math.sin(CURSOR_ANGLE) * CURSOR_HEIGHT);
+  // Number of milliseconds after page load in which a scroll-update
+  // related hello-back message will be processed:
+  var SCROLL_UPDATE_CUTOFF = 2000;
+
+  session.hub.on("cursor-update", function (msg) {
+    if (msg.sameUrl) {
+      Cursor.getClient(msg.clientId).updatePosition(msg);
+    } else {
+      // FIXME: This should be caught even before the cursor-update message,
+      // when the peer goes to another URL
+      Cursor.getClient(msg.clientId).hideOtherUrl();
+    }
+  });
+
+  // FIXME: should check for a peer leaving and remove the cursor object
+  var Cursor = util.Class({
+
+    constructor: function (clientId) {
+      this.clientId = clientId;
+      this.element = templating.clone("cursor");
+      this.elementClass = "togetherjs-scrolled-normal";
+      this.element.addClass(this.elementClass);
+      this.updatePeer(peers.getPeer(clientId));
+      this.lastTop = this.lastLeft = null;
+      $(document.body).append(this.element);
+      this.element.animateCursorEntry();
+      this.keydownTimeout = null;
+      this.clearKeydown = this.clearKeydown.bind(this);
+      this.atOtherUrl = false;
+    },
+
+    // How long after receiving a setKeydown call that we should show the
+    // user typing.  This should be more than MIN_KEYDOWN_TIME:
+    KEYDOWN_WAIT_TIME: 2000,
+
+    updatePeer: function (peer) {
+      // FIXME: can I use peer.setElement()?
+      this.element.css({color: peer.color});
+      var img = this.element.find("img.togetherjs-cursor-img");
+      img.attr("src", makeCursor(peer.color));
+      var name = this.element.find(".togetherjs-cursor-name");
+      var nameContainer = this.element.find(".togetherjs-cursor-container");
+      assert(name.length);
+      name.text(peer.name);
+      nameContainer.css({
+        backgroundColor: peer.color,
+        color: tinycolor.mostReadable(peer.color, FOREGROUND_COLORS)
+      });
+      var path = this.element.find("svg path");
+      path.attr("fill", peer.color);
+      // FIXME: should I just remove the element?
+      if (peer.status != "live") {
+        //this.element.hide();
+        this.element.find("svg").animate({
+          opacity: 0
+        }, 350);
+        this.element.find(".togetherjs-cursor-container").animate({
+                width: 34,
+                height: 20,
+                padding: 12,
+                margin: 0
+            }, 200).animate({
+                width: 0,
+                height: 0,
+                padding: 0,
+                opacity: 0
+                }, 200);
+      } else {
+        //this.element.show();
+        this.element.animate({
+          opacity:0.3
+        }).animate({
+          opacity:1
+        });
+      }
+    },
+
+    setClass: function (name) {
+      if (name != this.elementClass) {
+        this.element.removeClass(this.elementClass).addClass(name);
+        this.elementClass = name;
+      }
+    },
+
+    updatePosition: function (pos) {
+      var top, left;
+      if (this.atOtherUrl) {
+        this.element.show();
+        this.atOtherUrl = false;
+      }
+      if (pos.element) {
+        var target = $(elementFinder.findElement(pos.element));
+        var offset = target.offset();
+        top = offset.top + pos.offsetY;
+        left = offset.left + pos.offsetX;
+      } else {
+        // No anchor, just an absolute position
+        top = pos.top;
+        left = pos.left;
+      }
+      // These are saved for use by .refresh():
+      this.lastTop = top;
+      this.lastLeft = left;
+      this.setPosition(top, left);
+    },
+
+    hideOtherUrl: function () {
+      if (this.atOtherUrl) {
+        return;
+      }
+      this.atOtherUrl = true;
+      // FIXME: should show away status better:
+      this.element.hide();
+    },
+
+    // place Cursor rotate function down here FIXME: this doesnt do anything anymore.  This is in the CSS as an animation
+    rotateCursorDown: function(){
+      var e = $(this.element).find('svg');
+        e.animate({borderSpacing: -150, opacity: 1}, {
+        step: function(now, fx) {
+          if (fx.prop == "borderSpacing") {
+            e.css('-webkit-transform', 'rotate('+now+'deg)')
+              .css('-moz-transform', 'rotate('+now+'deg)')
+              .css('-ms-transform', 'rotate('+now+'deg)')
+              .css('-o-transform', 'rotate('+now+'deg)')
+              .css('transform', 'rotate('+now+'deg)');
+          } else {
+            e.css(fx.prop, now);
+          }
+        },
+        duration: 500
+      }, 'linear').promise().then(function () {
+        e.css('-webkit-transform', '')
+          .css('-moz-transform', '')
+          .css('-ms-transform', '')
+          .css('-o-transform', '')
+          .css('transform', '')
+          .css("opacity", "");
+      });
+    },
+
+    setPosition: function (top, left) {
+      var wTop = $(window).scrollTop();
+      var height = $(window).height();
+
+      if (top < wTop) {
+        // FIXME: this is a totally arbitrary number, but is meant to be big enough
+        // to keep the cursor name from being off the top of the screen.
+        top = 25;
+        this.setClass("togetherjs-scrolled-above");
+      } else if (top > wTop + height - CURSOR_HEIGHT) {
+        top = height - CURSOR_HEIGHT - 5;
+        this.setClass("togetherjs-scrolled-below");
+      } else {
+        this.setClass("togetherjs-scrolled-normal");
+      }
+      this.element.css({
+        top: top,
+        left: left
+      });
+    },
+
+    refresh: function () {
+      if (this.lastTop !== null) {
+        this.setPosition(this.lastTop, this.lastLeft);
+      }
+    },
+
+    setKeydown: function () {
+      if (this.keydownTimeout) {
+        clearTimeout(this.keydownTimeout);
+      } else {
+        this.element.find(".togetherjs-cursor-typing").show().animateKeyboard();
+      }
+      this.keydownTimeout = setTimeout(this.clearKeydown, this.KEYDOWN_WAIT_TIME);
+    },
+
+    clearKeydown: function () {
+      this.keydownTimeout = null;
+      this.element.find(".togetherjs-cursor-typing").hide().stopKeyboardAnimation();
+    },
+
+    _destroy: function () {
+      this.element.remove();
+      this.element = null;
+    }
+  });
+
+  Cursor._cursors = {};
+
+  cursor.getClient = Cursor.getClient = function (clientId) {
+    var c = Cursor._cursors[clientId];
+    if (! c) {
+      c = Cursor._cursors[clientId] = Cursor(clientId);
+    }
+    return c;
+  };
+
+  Cursor.forEach = function (callback, context) {
+    context = context || null;
+    for (var a in Cursor._cursors) {
+      if (Cursor._cursors.hasOwnProperty(a)) {
+        callback.call(context, Cursor._cursors[a], a);
+      }
+    }
+  };
+
+  Cursor.destroy = function (clientId) {
+    Cursor._cursors[clientId]._destroy();
+    delete Cursor._cursors[clientId];
+  };
+
+  peers.on("new-peer identity-updated status-updated", function (peer) {
+    var c = Cursor.getClient(peer.id);
+    c.updatePeer(peer);
+  });
+
+  var lastTime = 0;
+  var MIN_TIME = 100;
+  var lastPosX = -1;
+  var lastPosY = -1;
+  var lastMessage = null;
+  function mousemove(event) {
+    var now = Date.now();
+    if (now - lastTime < MIN_TIME) {
+      return;
+    }
+    lastTime = now;
+    var pageX = event.pageX;
+    var pageY = event.pageY;
+    if (Math.abs(lastPosX - pageX) < 3 && Math.abs(lastPosY - pageY) < 3) {
+      // Not a substantial enough change
+      return;
+    }
+    lastPosX = pageX;
+    lastPosY = pageY;
+    var target = event.target;
+    var parent = $(target).closest(".togetherjs-window, .togetherjs-popup, #togetherjs-dock");
+    if (parent.length) {
+      target = parent[0];
+    } else if (elementFinder.ignoreElement(target)) {
+      target = null;
+    }
+    if ((! target) || target == document.documentElement || target == document.body) {
+      lastMessage = {
+        type: "cursor-update",
+        top: pageY,
+        left: pageX
+      };
+      session.send(lastMessage);
+      return;
+    }
+    target = $(target);
+    var offset = target.offset();
+    if (! offset) {
+      // FIXME: this really is walkabout.js's problem to fire events on the
+      // document instead of a specific element
+      console.warn("Could not get offset of element:", target[0]);
+      return;
+    }
+    var offsetX = pageX - offset.left;
+    var offsetY = pageY - offset.top;
+    lastMessage = {
+      type: "cursor-update",
+      element: elementFinder.elementLocation(target),
+      offsetX: Math.floor(offsetX),
+      offsetY: Math.floor(offsetY)
+    };
+    session.send(lastMessage);
+  }
+
+  function makeCursor(color) {
+    var canvas = $("<canvas></canvas>");
+    canvas.attr("height", CURSOR_HEIGHT);
+    canvas.attr("width", CURSOR_WIDTH);
+    var context = canvas[0].getContext('2d');
+    context.fillStyle = color;
+    context.moveTo(0, 0);
+    context.beginPath();
+    context.lineTo(0, CURSOR_HEIGHT/1.2);
+    context.lineTo(Math.sin(CURSOR_ANGLE/2) * CURSOR_HEIGHT / 1.5,
+                   Math.cos(CURSOR_ANGLE/2) * CURSOR_HEIGHT / 1.5);
+    context.lineTo(Math.sin(CURSOR_ANGLE) * CURSOR_HEIGHT / 1.2,
+                   Math.cos(CURSOR_ANGLE) * CURSOR_HEIGHT / 1.2);
+    context.lineTo(0, 0);
+    context.shadowColor = 'rgba(0,0,0,0.3)';
+    context.shadowBlur = 2;
+    context.shadowOffsetX = 1;
+    context.shadowOffsetY = 2;
+	context.strokeStyle = "#ffffff";
+	context.stroke();
+    context.fill();
+    return canvas[0].toDataURL("image/png");
+  }
+
+  var scrollTimeout = null;
+  var scrollTimeoutSet = 0;
+  var SCROLL_DELAY_TIMEOUT = 75;
+  var SCROLL_DELAY_LIMIT = 300;
+
+  function scroll() {
+    var now = Date.now();
+    if (scrollTimeout) {
+      if (now - scrollTimeoutSet < SCROLL_DELAY_LIMIT) {
+        clearTimeout(scrollTimeout);
+      } else {
+        // Just let it progress anyway
+        return;
+      }
+    }
+    scrollTimeout = setTimeout(_scrollRefresh, SCROLL_DELAY_TIMEOUT);
+    if (! scrollTimeoutSet) {
+      scrollTimeoutSet = now;
+    }
+  }
+
+  var lastScrollMessage = null;
+  function _scrollRefresh() {
+    scrollTimeout = null;
+    scrollTimeoutSet = 0;
+    Cursor.forEach(function (c) {
+      c.refresh();
+    });
+    lastScrollMessage = {
+      type: "scroll-update",
+      position: elementFinder.elementByPixel($(window).scrollTop())
+    };
+    session.send(lastScrollMessage);
+  }
+
+  // FIXME: do the same thing for cursor position?  And give up on the
+  // ad hoc update-on-hello?
+  session.on("prepare-hello", function (helloMessage) {
+    if (lastScrollMessage) {
+      helloMessage.scrollPosition = lastScrollMessage.position;
+    }
+  });
+
+  session.hub.on("scroll-update", function (msg) {
+    msg.peer.scrollPosition = msg.position;
+    if (msg.peer.following) {
+      msg.peer.view.scrollTo();
+    }
+  });
+
+  // In case there are multiple peers, we track that we've accepted one of their
+  // hello-based scroll updates, just so we don't bounce around (we don't intelligently
+  // choose which one to use, just the first that comes in)
+  var acceptedScrollUpdate = false;
+  session.hub.on("hello-back hello", function (msg) {
+    if (msg.type == "hello") {
+      // Once a hello comes in, a bunch of hello-backs not intended for us will also
+      // come in, and we should ignore them
+      acceptedScrollUpdate = true;
+    }
+    if (! msg.scrollPosition) {
+      return;
+    }
+    msg.peer.scrollPosition = msg.scrollPosition;
+    if ((! acceptedScrollUpdate) &&
+        msg.sameUrl &&
+        Date.now() - session.timeHelloSent < SCROLL_UPDATE_CUTOFF) {
+      acceptedScrollUpdate = true;
+      msg.peer.view.scrollTo();
+    }
+  });
+
+  session.on("ui-ready", function () {
+    $(document).mousemove(mousemove);
+    document.addEventListener("click", documentClick, true);
+    document.addEventListener("keydown", documentKeydown, true);
+    $(window).scroll(scroll);
+    scroll();
+  });
+
+  session.on("close", function () {
+    Cursor.forEach(function (c, clientId) {
+      Cursor.destroy(clientId);
+    });
+    $(document).unbind("mousemove", mousemove);
+    document.removeEventListener("click", documentClick, true);
+    document.removeEventListener("keydown", documentKeydown, true);
+    $(window).unbind("scroll", scroll);
+  });
+
+  session.hub.on("hello", function (msg) {
+    // Immediately get our cursor onto this new person's screen:
+    if (lastMessage) {
+      session.send(lastMessage);
+    }
+    if (lastScrollMessage) {
+      session.send(lastScrollMessage);
+    }
+  });
+
+  function documentClick(event) {
+    if (event.togetherjsInternal) {
+      // This is an artificial internal event
+      return;
+    }
+    // FIXME: this might just be my imagination, but somehow I just
+    // really don't want to do anything at this stage of the event
+    // handling (since I'm catching every click), and I'll just do
+    // something real soon:
+    setTimeout(function () {
+      if (! TogetherJS.running) {
+        // This can end up running right after TogetherJS has been closed, often
+        // because TogetherJS was closed with a click...
+        return;
+      }
+      var element = event.target;
+      if (element == document.documentElement) {
+        // For some reason clicking on <body> gives the <html> element here
+        element = document.body;
+      }
+      if (elementFinder.ignoreElement(element)) {
+        return;
+      }
+      //Prevent click events on video objects to avoid conflicts with
+      //togetherjs's own video events
+      if (element.nodeName.toLowerCase() === 'video'){
+        return;
+      }
+
+      var dontShowClicks = TogetherJS.config.get("dontShowClicks");
+      var cloneClicks = TogetherJS.config.get("cloneClicks");
+      // If you dont want to clone the click for this element
+      // and you dont want to show the click for this element or you dont want to show any clicks
+      // then return to avoid sending a useless click
+      if ((! util.matchElement(element, cloneClicks)) && util.matchElement(element, dontShowClicks)) {
+        return;
+      }
+      var location = elementFinder.elementLocation(element);
+      var offset = $(element).offset();
+      var offsetX = event.pageX - offset.left;
+      var offsetY = event.pageY - offset.top;
+      session.send({
+        type: "cursor-click",
+        element: location,
+        offsetX: offsetX,
+        offsetY: offsetY
+      });
+      if (util.matchElement(element, dontShowClicks)) {
+        return;
+      }
+      displayClick({top: event.pageY, left: event.pageX}, peers.Self.color);
+    });
+  }
+
+  var CLICK_TRANSITION_TIME = 3000;
+
+  session.hub.on("cursor-click", function (pos) {
+    // When the click is calculated isn't always the same as how the
+    // last cursor update was calculated, so we force the cursor to
+    // the last location during a click:
+    if (! pos.sameUrl) {
+      // FIXME: if we *could have* done a local click, but we follow along
+      // later, we'll be in different states if that click was important.
+      // Mostly click cloning just won't work.
+      return;
+    }
+    Cursor.getClient(pos.clientId).updatePosition(pos);
+    var target = $(elementFinder.findElement(pos.element));
+    var offset = target.offset();
+    var top = offset.top + pos.offsetY;
+    var left = offset.left + pos.offsetX;
+    var cloneClicks = TogetherJS.config.get("cloneClicks");
+    if (util.matchElement(target, cloneClicks)) {
+      eventMaker.performClick(target);
+    }
+    var dontShowClicks = TogetherJS.config.get("dontShowClicks");
+    if (util.matchElement(target, dontShowClicks)) {
+      return;
+    }
+    displayClick({top: top, left: left}, pos.peer.color);
+  });
+
+  function displayClick(pos, color) {
+    // FIXME: should we hide the local click if no one else is going to see it?
+    // That means tracking who might be able to see our screen.
+    var element = templating.clone("click");
+    $(document.body).append(element);
+    element.css({
+      top: pos.top,
+      left: pos.left,
+      borderColor: color
+    });
+    setTimeout(function () {
+      element.addClass("togetherjs-clicking");
+    }, 100);
+    setTimeout(function () {
+      element.remove();
+    }, CLICK_TRANSITION_TIME);
+  }
+
+  var lastKeydown = 0;
+  var MIN_KEYDOWN_TIME = 500;
+
+  function documentKeydown(event) {
+    setTimeout(function () {
+      var now = Date.now();
+      if (now - lastKeydown < MIN_KEYDOWN_TIME) {
+        return;
+      }
+      lastKeydown = now;
+      // FIXME: is event.target interesting here?  That is, *what* the
+      // user is typing into, not just that the user is typing?  Also
+      // I'm assuming we don't care if the user it typing into a
+      // togetherjs-related field, since chat activity is as interesting
+      // as any other activity.
+      session.send({type: "keydown"});
+    });
+  }
+
+  session.hub.on("keydown", function (msg) {
+    // FIXME: when the cursor is hidden there's nothing to show with setKeydown().
+    var cursor = Cursor.getClient(msg.clientId);
+    cursor.setKeydown();
+  });
+
+  util.testExpose({Cursor: Cursor});
+
+  return cursor;
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('ot',["util"], function (util) {
+
+  var ot = util.Module("ot");
+  var assert = util.assert;
+
+  var StringSet = util.Class({
+    /* Set that only supports string items */
+    constructor: function () {
+      this._items = {};
+      this._count = 0;
+    },
+    contains: function (k) {
+      assert(typeof k == "string");
+      return this._items.hasOwnProperty(k);
+    },
+    add: function (k) {
+      assert(typeof k == "string");
+      if (this.contains(k)) {
+        return;
+      }
+      this._items[k] = null;
+      this._count++;
+    },
+    remove: function (k) {
+      assert(typeof k == "string");
+      if (! this.contains(k)) {
+        return;
+      }
+      delete this._items[k];
+      this._count++;
+    },
+    isEmpty: function () {
+      return ! this._count;
+    }
+  });
+
+  var Queue = util.Class({
+
+    constructor: function (size) {
+      this._q = [];
+      this._size = size;
+      this._deleted = 0;
+    },
+
+    _trim: function () {
+      if (this._size) {
+        if (this._q.length > this._size) {
+          this._q.splice(0, this._q.length - this._size);
+          this._deleted += this._q.length - this._size;
+        }
+      }
+    },
+
+    push: function (item) {
+      this._q.push(item);
+      this._trim();
+    },
+
+    last: function () {
+      return this._q[this._q.length-1];
+    },
+
+    walkBack: function (callback, context) {
+      var result = true;
+      for (var i=this._q.length-1; i >= 0; i--) {
+        var item = this._q[i];
+        result = callback.call(context, item, i + this._deleted);
+        if (result === false) {
+          return result;
+        } else if (! result) {
+          result = true;
+        }
+      }
+      return result;
+    },
+
+    walkForward: function (index, callback, context) {
+      var result = true;
+      for (var i=index; i<this._q.length; i++) {
+        var item = this._q[i-this._deleted];
+        result = callback.call(context, item, i);
+        if (result === false) {
+          return result;
+        } else if (! result) {
+          result = true;
+        }
+      }
+      return result;
+    },
+
+    insert: function (index, item) {
+      this._q.splice(index-this._deleted, 0, item);
+    }
+
+  });
+
+  var Change = util.Class({
+
+    constructor: function (version, clientId, delta, known, outOfOrder) {
+      this.version = version;
+      this.clientId = clientId;
+      this.delta = delta;
+      this.known = known;
+      this.outOfOrder = !! outOfOrder;
+      assert(typeof version == "number" && typeof clientId == "string",
+             "Bad Change():", version, clientId);
+    },
+
+    toString: function () {
+      var s = "[Change " + this.version + "." + this.clientId + ": ";
+      s += this.delta + " ";
+      if (this.outOfOrder) {
+        s += "(out of order) ";
+      }
+      var cids = [];
+      for (var a in this.known) {
+        if (this.known.hasOwnProperty(a)) {
+          cids.push(a);
+        }
+      }
+      cids.sort();
+      s += "{";
+      if (! cids.length) {
+        s += "nothing known";
+      } else {
+        cids.forEach(function (a, index) {
+          if (index) {
+            s += ";";
+          }
+          s += a + ":" + this.known[a];
+        }, this);
+      }
+      return s + "}]";
+    },
+
+    clone: function () {
+      return Change(this.version, this.clientId, this.delta.clone(), util.extend(this.known), this.outOfOrder);
+    },
+
+    isBefore: function (otherChange) {
+      assert(otherChange !== this, "Tried to compare a change to itself", this);
+      return otherChange.version > this.version ||
+          (otherChange.version == this.version && otherChange.clientId > this.clientId);
+    },
+
+    knowsAboutAll: function (versions) {
+      for (var clientId in versions) {
+        if (! versions.hasOwnProperty(clientId)) {
+          continue;
+        }
+        if (! versions[clientId]) {
+          continue;
+        }
+        if ((! this.known[clientId]) || this.known[clientId] < versions[clientId]) {
+          return false;
+        }
+      }
+      return true;
+    },
+
+    knowsAboutChange: function (change) {
+      return change.clientId == this.clientId ||
+          (this.known[change.clientId] && this.known[change.clientId] >= change.version);
+    },
+
+    knowsAboutVersion: function (version, clientId) {
+      if ((! version) || clientId == this.clientId) {
+        return true;
+      }
+      return this.known[clientId] && this.known[clientId] >= version;
+    },
+
+    maybeMissingChanges: function (mostRecentVersion, clientId) {
+      if (! mostRecentVersion) {
+        // No actual changes for clientId exist
+        return false;
+      }
+      if (! this.known[clientId]) {
+        // We don't even know about clientId, so we are definitely missing something
+        return true;
+      }
+      if (this.known[clientId] >= mostRecentVersion) {
+        // We know about all versions through mostRecentVersion
+        return false;
+      }
+      if ((clientId > this.clientId && this.known[clientId] >= this.version-1) ||
+          (clientId < this.clientId && this.known[clientId] == this.version)) {
+        // We know about all versions from clientId that could exist before this
+        // version
+        return false;
+      }
+      // We may or may not be missing something
+      return true;
+    }
+  });
+
+  /* SimpleHistory synchronizes peers by relying on the server to serialize
+   * the order of all updates.  Each client maintains a queue of patches
+   * which have not yet been 'committed' (by being echoed back from the
+   * server).  The client is responsible for transposing its own queue
+   * if 'earlier' patches are heard from the server.
+   *
+   * Let's say that A's edit "1" and B's edit "2" occur and get put in
+   * their respective SimpleHistory queues.  The server happens to
+   * handle 1 first, then 2, so those are the order that all peers
+   * (both A and B) see the messages.
+   *
+   * A sees 1, and has 1 on its queue, so everything's fine. It
+   * updates the 'committed' text to match its current text and drops
+   * the patch from its queue. It then sees 2, but the basis number
+   * for 2 no longer matches the committed basis, so it throws it
+   * away.
+   *
+   * B sees 1, and has 2 on its queue. It does the OT transpose thing,
+   * updating the committed text to include 1 and the 'current' text
+   * to include 1+2. It updates its queue with the newly transposed
+   * version of 2 (call it 2prime) and updates 2prime's basis
+   * number. It them resends 2prime to the server. It then receives 2
+   * (the original) but the basis number no longer matches the
+   * committed basis, so it throws it away.
+   *
+   * Now the server sees 2prime and rebroadcasts it to both A and B.
+   *
+   * A is seeing it for the first time, and the basis number matches,
+   * so it applies it to the current and committed text.
+   *
+   * B sees that 2prime matches what's on the start of its queue,
+   * shifts it off, and updates the committed text to match the
+   * current text.
+   *
+   * Note that no one tries to keep an entire history of changes,
+   * which is the main difference with ot.History.  Everyone applies
+   * the same patches in the same order.
+   */
+  ot.SimpleHistory = util.Class({
+
+    constructor: function(clientId, initState, initBasis) {
+      this.clientId = clientId;
+      this.committed = initState;
+      this.current = initState;
+      this.basis = initBasis;
+      this.queue = [];
+      this.deltaId = 1;
+      this.selection = null;
+    },
+
+    // Use a fake change to represent the selection.
+    // (This is the only bit that hard codes ot.TextReplace as the delta
+    // representation; override this in a subclass (or don't set the
+    // selection) if you are using a different delta representation.
+    setSelection: function(selection) {
+      if (selection) {
+        this.selection = ot.TextReplace(selection[0],
+                                        selection[1] - selection[0], '@');
+      } else {
+        this.selection = null;
+      }
+    },
+
+    // Decode the fake change to reconstruct the updated selection.
+    getSelection: function() {
+      if (! this.selection) {
+        return null;
+      }
+      return [this.selection.start, this.selection.start + this.selection.del];
+    },
+
+    // Add this delta to this client's queue.
+    add: function(delta) {
+      var change = {
+        id: this.clientId + '.' + (this.deltaId++),
+        delta: delta
+      };
+      if (! this.queue.length) {
+        change.basis = this.basis;
+      }
+      this.queue.push(change);
+      this.current = delta.apply(this.current);
+      return !!change.basis;
+    },
+
+    // Apply a delta received from the server.
+    // Return true iff the current text changed as a result.
+    commit: function(change) {
+
+      // ignore it if the basis doesn't match (this patch doesn't apply)
+      // if so, this delta is out of order; we expect the original client
+      // to retransmit an updated delta.
+      if (change.basis !== this.basis) {
+        return false; // 'current' text did not change
+      }
+
+      // is this the first thing on the queue?
+      if (this.queue.length && this.queue[0].id === change.id) {
+        assert(change.basis === this.queue[0].basis);
+        // good, apply this to commit state & remove it from queue
+        this.committed = this.queue.shift().delta.apply(this.committed);
+        this.basis++;
+        if (this.queue.length) {
+          this.queue[0].basis = this.basis;
+        }
+        return false; // 'current' text did not change
+      }
+
+      // Transpose all bits on the queue to put this patch first.
+      var inserted = change.delta;
+      this.queue = this.queue.map(function(qchange) {
+        var tt = qchange.delta.transpose(inserted);
+        inserted = tt[1];
+        return {
+          id: qchange.id,
+          delta: tt[0]
+        };
+      });
+      if (this.selection) {
+        // update the selection!
+        this.selection = this.selection.transpose(inserted)[0];
+      }
+      this.committed = change.delta.apply(this.committed);
+      this.basis++;
+      if (this.queue.length) {
+        this.queue[0].basis = this.basis;
+      }
+      // Update current by replaying queued changes starting from 'committed'
+      this.current = this.committed;
+      this.queue.forEach(function(qchange) {
+        this.current = qchange.delta.apply(this.current);
+      }.bind(this));
+      return true; // The 'current' text changed.
+    },
+
+    // Return the next change to transmit to the server, or null if there
+    // isn't one.
+    getNextToSend: function() {
+      var qchange = this.queue[0];
+      if (! qchange) {
+        /* nothing to send */
+        return null;
+      }
+      if (qchange.sent) {
+        /* already sent */
+        return null;
+      }
+      assert(qchange.basis);
+      qchange.sent = true;
+      return qchange;
+    }
+  });
+
+  ot.History = util.Class({
+
+    constructor: function (clientId, initState) {
+      this._history = Queue();
+      this._history.push({
+        clientId: "init", state: initState
+      });
+      this.clientId = clientId;
+      this.known = {};
+      this.mostRecentLocalChange = null;
+    },
+
+    add: function (change) {
+      // Simplest cast, it is our change:
+      if (change.clientId == this.clientId) {
+        this._history.push(change);
+        this.mostRecentLocalChange = change.version;
+        return change.delta;
+      }
+      assert((! this.known[change.clientId]) || this.known[change.clientId] < change.version,
+            "Got a change", change, "that appears older (or same as) a known change", this.known[change.clientId]);
+      // Second simplest case, we get a change that we can add to our
+      // history without modification:
+      var last = this._history.last();
+      if ((last.clientId == "init" || last.isBefore(change)) &&
+          change.knowsAboutAll(this.known) &&
+          change.knowsAboutVersion(this.mostRecentLocalChange, this.clientId)) {
+        this._history.push(change);
+        this.known[change.clientId] = change.version;
+        return change.delta;
+      }
+      // We must do work!
+
+      this.logHistory("//");
+
+      // First we check if we need to modify this change because we
+      // know about changes that it should know about (changes that
+      // preceed it that are in our local history).
+      var clientsToCheck = StringSet();
+      for (var clientId in this.known) {
+        if (! this.known.hasOwnProperty(clientId)) {
+          continue;
+        }
+        if (change.maybeMissingChanges(this.known[clientId], clientId)) {
+          clientsToCheck.add(clientId);
+        }
+      }
+      if (change.maybeMissingChanges(this.mostRecentLocalChange, this.clientId)) {
+        clientsToCheck.add(this.clientId);
+      }
+      if (! clientsToCheck.isEmpty()) {
+        var indexToCheckFrom = null;
+        this._history.walkBack(function (c, index) {
+          indexToCheckFrom = index;
+          if (c.clientId == "init") {
+            return false;
+          }
+          if (clientsToCheck.contains(c.clientId) &&
+              ! change.maybeMissingChanges(c.version, c.clientId)) {
+            clientsToCheck.remove(c.clientId);
+            if (clientsToCheck.isEmpty()) {
+              return false;
+            }
+          }
+          return true;
+        }, this);
+        this._history.walkForward(indexToCheckFrom, function (c, index) {
+          if (c.clientId == "init") {
+            return true;
+          }
+          if (change.isBefore(c)) {
+            return false;
+          }
+          if (! change.knowsAboutChange(c)) {
+            var presentDelta = this.promoteDelta(c.delta, index, change);
+            if (! presentDelta.equals(c.delta)) {
+              //console.log("->rebase delta rewrite", presentDelta+"");
+            }
+            this.logChange("->rebase", change, function () {
+              var result = change.delta.transpose(presentDelta);
+              change.delta = result[0];
+              change.known[c.clientId] = c.version;
+            }, "with:", c);
+          }
+          return true;
+        }, this);
+      }
+
+      // Next we insert the change into its proper location
+      var indexToInsert = null;
+      this._history.walkBack(function (c, index) {
+        if (c.clientId == "init" || c.isBefore(change)) {
+          indexToInsert = index+1;
+          return false;
+        }
+        return true;
+      }, this);
+      assert(indexToInsert);
+      this._history.insert(indexToInsert, change);
+
+      // Now we fix up any forward changes
+      var fixupDelta = change.delta;
+      this._history.walkForward(indexToInsert+1, function (c, index) {
+        if (! c.knowsAboutChange(change)) {
+          var origChange = c.clone();
+          this.logChange("^^fix", c, function () {
+            var fixupResult = c.delta.transpose(fixupDelta);
+            console.log("  ^^real");
+            var result = c.delta.transpose(fixupDelta);
+            c.delta = result[0];
+            c.known[change.clientId] = change.version;
+            fixupDelta = fixupResult[1];
+          }, "clone:", change.delta+"");
+          console.log("(trans)", fixupDelta+"");
+          assert(c.knowsAboutChange(change));
+        }
+      }, this);
+
+      // Finally we return the transformed delta that represents
+      // changes that should be made to the state:
+
+      this.logHistory("!!");
+      return fixupDelta;
+    },
+
+    promoteDelta: function (delta, deltaIndex, untilChange) {
+      this._history.walkForward(deltaIndex+1, function (c, index) {
+        if (untilChange.isBefore(c)) {
+          return false;
+        }
+        // FIXME: not sure if this clientId check here is right.  Maybe
+        // if untilChange.knowsAbout(c)?
+        if (untilChange.knowsAboutChange(c)) {
+          var result = c.delta.transpose(delta);
+          delta = result[1];
+        }
+        return true;
+      });
+      return delta;
+    },
+
+    logHistory: function (prefix) {
+      prefix = prefix || "";
+      var postfix = Array.prototype.slice.call(arguments, 1);
+      console.log.apply(console, [prefix + "history", this.clientId, ":"].concat(postfix));
+      console.log(prefix + " state:", JSON.stringify(this.getStateSafe()));
+      var hstate;
+      this._history.walkForward(0, function (c, index) {
+        if (! index) {
+          assert(c.clientId == "init");
+          console.log(prefix + " init:", JSON.stringify(c.state));
+          hstate = c.state;
+        } else {
+          try {
+            hstate = c.delta.apply(hstate);
+          } catch (e) {
+            hstate = "Error: " + e;
+          }
+          console.log(prefix + "  ", index, c+"", JSON.stringify(hstate));
+        }
+      });
+    },
+
+    logChange: function (prefix, change, callback) {
+      prefix = prefix || "before";
+      var postfix = Array.prototype.slice.call(arguments, 3);
+      console.log.apply(
+        console,
+        [prefix, this.clientId, ":", change+""].concat(postfix).concat([JSON.stringify(this.getStateSafe(true))]));
+      try {
+        callback();
+      } finally {
+        console.log(prefix + " after:", change+"", JSON.stringify(this.getStateSafe()));
+      }
+    },
+
+    addDelta: function (delta) {
+      var version = this._createVersion();
+      var change = Change(version, this.clientId, delta, util.extend(this.knownVersions));
+      this.add(change);
+      return change;
+    },
+
+    _createVersion: function () {
+      var max = 1;
+      for (var id in this.knownVersions) {
+        max = Math.max(max, this.knownVersions[id]);
+      }
+      max = Math.max(max, this.mostRecentLocalChange);
+      return max+1;
+    },
+
+    fault: function (change) {
+      throw new Error('Fault');
+    },
+
+    getState: function () {
+      var state;
+      this._history.walkForward(0, function (c) {
+        if (c.clientId == "init") {
+          // Initialization, has the state
+          state = c.state;
+        } else {
+          state = c.delta.apply(state);
+        }
+      }, this);
+      return state;
+    },
+
+    getStateSafe: function () {
+      try {
+        return this.getState();
+      } catch (e) {
+        return 'Error: ' + e;
+      }
+    }
+
+  });
+
+  ot.TextReplace = util.Class({
+
+    constructor: function (start, del, text) {
+      assert(typeof start == "number" && typeof del == "number" && typeof text == "string", start, del, text);
+      assert(start >=0 && del >= 0, start, del);
+      this.start = start;
+      this.del = del;
+      this.text = text;
+    },
+
+    toString: function () {
+      if (this.empty()) {
+        return '[no-op]';
+      }
+      if (! this.del) {
+        return '[insert ' + JSON.stringify(this.text) + ' @' + this.start + ']';
+      } else if (! this.text) {
+        return '[delete ' + this.del + ' chars @' + this.start + ']';
+      } else {
+        return '[replace ' + this.del + ' chars with ' + JSON.stringify(this.text) + ' @' + this.start + ']';
+      }
+    },
+
+    equals: function (other) {
+      return other.constructor === this.constructor &&
+          other.del === this.del &&
+          other.start === this.start &&
+          other.text === this.text;
+    },
+
+    clone: function (start, del, text) {
+      if (start === undefined) {
+        start = this.start;
+      }
+      if (del === undefined) {
+        del = this.del;
+      }
+      if (text === undefined) {
+        text = this.text;
+      }
+      return ot.TextReplace(start, del, text);
+    },
+
+    empty: function () {
+      return (! this.del) && (! this.text);
+    },
+
+    apply: function (text) {
+      if (this.empty()) {
+        return text;
+      }
+      if (this.start > text.length) {
+        console.trace();
+        throw new util.AssertionError("Start after end of text (" + JSON.stringify(text) + "/" + text.length + "): " + this);
+      }
+      if (this.start + this.del > text.length) {
+        throw new util.AssertionError("Start+del after end of text (" + JSON.stringify(text) + "/" + text.length + "): " + this);
+      }
+      return text.substr(0, this.start) + this.text + text.substr(this.start+this.del);
+    },
+
+    transpose: function (delta) {
+      /* Transform this delta as though the other delta had come before it.
+         Returns a [new_version_of_this, transformed_delta], where transformed_delta
+         satisfies:
+
+         result1 = new_version_of_this.apply(delta.apply(text));
+         result2 = transformed_delta.apply(this.apply(text));
+         assert(result1 == result2);
+
+         Does not modify this object.
+      */
+      var overlap;
+      assert(delta instanceof ot.TextReplace, "Transposing with non-TextReplace:", delta);
+      if (this.empty()) {
+        //console.log("  =this is empty");
+        return [this.clone(), delta.clone()];
+      }
+      if (delta.empty()) {
+        //console.log("  =other is empty");
+        return [this.clone(), delta.clone()];
+      }
+      if (delta.before(this)) {
+        //console.log("  =this after other");
+        return [this.clone(this.start + delta.text.length - delta.del),
+                delta.clone()];
+      } else if (this.before(delta)) {
+        //console.log("  =this before other");
+        return [this.clone(), delta.clone(delta.start + this.text.length - this.del)];
+      } else if (delta.sameRange(this)) {
+        //console.log("  =same range");
+        return [this.clone(this.start+delta.text.length, 0),
+                delta.clone(undefined, 0)];
+      } else if (delta.contains(this)) {
+        //console.log("  =other contains this");
+        return [this.clone(delta.start+delta.text.length, 0, this.text),
+                delta.clone(undefined, delta.del - this.del + this.text.length, delta.text + this.text)];
+      } else if (this.contains(delta)) {
+        //console.log("  =this contains other");
+        return [this.clone(undefined, this.del - delta.del + delta.text.length, delta.text + this.text),
+                delta.clone(this.start, 0, delta.text)];
+      } else if (this.overlapsStart(delta)) {
+        //console.log("  =this overlaps start of other");
+        overlap = this.start + this.del - delta.start;
+        return [this.clone(undefined, this.del - overlap),
+                delta.clone(this.start + this.text.length, delta.del - overlap)];
+      } else {
+        //console.log("  =this overlaps end of other");
+        assert(delta.overlapsStart(this), delta+"", "does not overlap start of", this+"", delta.before(this));
+        overlap = delta.start + delta.del - this.start;
+        return [this.clone(delta.start + delta.text.length, this.del - overlap),
+                delta.clone(undefined, delta.del - overlap)];
+      }
+      throw 'Should not happen';
+    },
+
+    before: function (other) {
+      return this.start + this.del <= other.start;
+    },
+
+    contains: function (other) {
+      return other.start >= this.start && other.start + other.del < this.start + this.del;
+    },
+
+    sameRange: function (other) {
+      return other.start == this.start && other.del == this.del;
+    },
+
+    overlapsStart: function (other) {
+      return this.start < other.start && this.start + this.del > other.start;
+    },
+
+    classMethods: {
+
+      /* Make a new ot.TextReplace that converts oldValue to newValue. */
+      fromChange: function(oldValue, newValue) {
+        assert(typeof oldValue == "string");
+        assert(typeof newValue == "string");
+        var commonStart = 0;
+        while (commonStart < newValue.length &&
+               newValue.charAt(commonStart) == oldValue.charAt(commonStart)) {
+          commonStart++;
+        }
+        var commonEnd = 0;
+        while (commonEnd < (newValue.length - commonStart) &&
+               commonEnd < (oldValue.length - commonStart) &&
+               newValue.charAt(newValue.length - commonEnd - 1) ==
+               oldValue.charAt(oldValue.length - commonEnd - 1)) {
+          commonEnd++;
+        }
+        var removed = oldValue.substr(commonStart, oldValue.length - commonStart - commonEnd);
+        var inserted = newValue.substr(commonStart, newValue.length - commonStart - commonEnd);
+        if (! (removed.length || inserted)) {
+          return null;
+        }
+        return this(commonStart, removed.length, inserted);
+      },
+
+      random: function (source, generator) {
+        var text, start, len;
+        var ops = ["ins", "del", "repl"];
+        if (! source.length) {
+          ops = ["ins"];
+        }
+        switch (generator.pick(ops)) {
+        case "ins":
+          if (! generator.number(2)) {
+            text = generator.string(1);
+          } else {
+            text = generator.string(generator.number(3)+1);
+          }
+          if (! generator.number(4)) {
+            start = 0;
+          } else if (! generator.number(3)) {
+            start = source.length-1;
+          } else {
+            start = generator.number(source.length);
+          }
+          return this(start, 0, text);
+
+        case "del":
+          if (! generator.number(20)) {
+            return this(0, source.length, "");
+          }
+          start = generator.number(source.length-1);
+          if (! generator.number(2)) {
+            len = 1;
+          } else {
+            len = generator.number(5)+1;
+          }
+          len = Math.min(len, source.length - start);
+          return this(start, len, "");
+
+        case "repl":
+          start = generator.number(source.length-1);
+          len = generator.number(5);
+          len = Math.min(len, source.length - start);
+          text = generator.string(generator.number(2)+1);
+          return this(start, len, text);
+        }
+        throw 'Unreachable';
+      }
+    }
+  });
+
+  return ot;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('forms',["jquery", "util", "session", "elementFinder", "eventMaker", "templating", "ot"], function ($, util, session, elementFinder, eventMaker, templating, ot) {
+  var forms = util.Module("forms");
+  var assert = util.assert;
+
+  // This is how much larger the focus element is than the element it surrounds
+  // (this is padding on each side)
+  var FOCUS_BUFFER = 5;
+
+  var inRemoteUpdate = false;
+
+  function suppressSync(element) {
+    var ignoreForms = TogetherJS.config.get("ignoreForms");
+    if (ignoreForms === true) {
+      return true;
+    }
+    else {
+      return $(element).is(ignoreForms.join(",")); 
+    }
+  }
+
+  function maybeChange(event) {
+    // Called when we get an event that may or may not indicate a real change
+    // (like keyup in a textarea)
+    var tag = event.target.tagName;
+    if (tag == "TEXTAREA" || tag == "INPUT") {
+      change(event);
+    }
+  }
+
+  function change(event) {
+    sendData({
+      element: event.target,
+      value: getValue(event.target)
+    });
+  }
+
+  function sendData(attrs) {
+    var el = $(attrs.element);
+    assert(el);
+    var tracker = attrs.tracker;
+    var value = attrs.value;
+    if (inRemoteUpdate) {
+      return;
+    }
+    if (elementFinder.ignoreElement(el) ||
+        (elementTracked(el) && !tracker) ||
+        suppressSync(el)) {
+      return;
+    }
+    var location = elementFinder.elementLocation(el);
+    var msg = {
+      type: "form-update",
+      element: location
+    };
+    if (isText(el) || tracker) {
+      var history = el.data("togetherjsHistory");
+      if (history) {
+        if (history.current == value) {
+          return;
+        }
+        var delta = ot.TextReplace.fromChange(history.current, value);
+        assert(delta);
+        history.add(delta);
+        maybeSendUpdate(msg.element, history, tracker);
+        return;
+      } else {
+        msg.value = value;
+        msg.basis = 1;
+        el.data("togetherjsHistory", ot.SimpleHistory(session.clientId, value, 1));
+      }
+    } else {
+      msg.value = value;
+    }
+    session.send(msg);
+  }
+
+  function isCheckable(el) {
+    el = $(el);
+    var type = (el.prop("type") || "text").toLowerCase();
+    if (el.prop("tagName") == "INPUT" && ["radio", "checkbox"].indexOf(type) != -1) {
+      return true;
+    }
+    return false;
+  }
+
+  var editTrackers = {};
+  var liveTrackers = [];
+
+  TogetherJS.addTracker = function (TrackerClass, skipSetInit) {
+    assert(typeof TrackerClass === "function", "You must pass in a class");
+    assert(typeof TrackerClass.prototype.trackerName === "string",
+           "Needs a .prototype.trackerName string");
+    // Test for required instance methods.
+    "destroy update init makeInit tracked".split(/ /).forEach(function(m) {
+      assert(typeof TrackerClass.prototype[m] === "function",
+             "Missing required tracker method: "+m);
+    });
+    // Test for required class methods.
+    "scan tracked".split(/ /).forEach(function(m) {
+      assert(typeof TrackerClass[m] === "function",
+             "Missing required tracker class method: "+m);
+    });
+    editTrackers[TrackerClass.prototype.trackerName] = TrackerClass;
+    if (!skipSetInit) {
+      setInit();
+    }
+  };
+
+  var AceEditor = util.Class({
+
+    trackerName: "AceEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert($(this.element).hasClass("ace_editor"));
+      this._change = this._change.bind(this);
+      this._editor().document.on("change", this._change);
+    },
+
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+
+    destroy: function (el) {
+      this._editor().document.removeListener("change", this._change);
+    },
+
+    update: function (msg) {
+      this._editor().document.setValue(msg.value);
+    },
+
+    init: function (update, msg) {
+      this.update(update);
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this._editor().document.getValue()
+      };
+    },
+
+    _editor: function () {
+      return this.element.env;
+    },
+
+    _change: function (e) {
+      // FIXME: I should have an internal .send() function that automatically
+      // asserts !inRemoteUpdate, among other things
+      if (inRemoteUpdate) {
+        return;
+      }
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    getContent: function() {
+      return this._editor().document.getValue();
+    }
+  });
+
+  AceEditor.scan = function () {
+    return $(".ace_editor");
+  };
+
+  AceEditor.tracked = function (el) {
+    return !! $(el).closest(".ace_editor").length;
+  };
+
+  TogetherJS.addTracker(AceEditor, true /* skip setInit */);
+
+  var CodeMirrorEditor = util.Class({
+    trackerName: "CodeMirrorEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert(this.element.CodeMirror);
+      this._change = this._change.bind(this);
+      this._editor().on("change", this._change);
+    },
+
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+
+    destroy: function (el) {
+      this._editor().off("change", this._change);
+    },
+
+    update: function (msg) {
+      this._editor().setValue(msg.value);
+    },
+
+    init: function (msg) {
+      if (msg.value) {
+        this.update(msg);
+      }
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this._editor().getValue()
+      };
+    },
+
+    _change: function (editor, change) {
+      if (inRemoteUpdate) {
+        return;
+      }
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    _editor: function () {
+      return this.element.CodeMirror;
+    },
+
+    getContent: function() {
+      return this._editor().getValue();
+    }
+  });
+
+  CodeMirrorEditor.scan = function () {
+    var result = [];
+    var els = document.body.getElementsByTagName("*");
+    var _len = els.length;
+    for (var i=0; i<_len; i++) {
+      var el = els[i];
+      if (el.CodeMirror) {
+        result.push(el);
+      }
+    }
+    return $(result);
+  };
+
+  CodeMirrorEditor.tracked = function (el) {
+    el = $(el)[0];
+    while (el) {
+      if (el.CodeMirror) {
+        return true;
+      }
+      el = el.parentNode;
+    }
+    return false;
+  };
+
+  TogetherJS.addTracker(CodeMirrorEditor, true /* skip setInit */);
+
+  var CKEditor = util.Class({
+    trackerName: "CKEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert(CKEDITOR);
+      assert(CKEDITOR.dom.element.get(this.element));
+      this._change = this._change.bind(this);
+      // FIXME: change event is available since CKEditor 4.2
+      this._editor().on("change", this._change);
+    },
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+    destroy: function (el) {
+      this._editor().removeListener("change", this._change);
+    },
+
+    update: function (msg) {
+      //FIXME: use setHtml instead of setData to avoid frame reloading overhead
+      this._editor().editable().setHtml(msg.value);
+    },
+
+    init: function (update, msg) {
+      this.update(update);
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this.getContent()
+      };
+    },
+
+    _change: function (e) {
+      if (inRemoteUpdate) {
+        return;
+      }
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    _editor: function () {
+      return CKEDITOR.dom.element.get(this.element).getEditor();
+    },
+    
+    getContent: function () {
+      return this._editor().getData();
+    }
+  });
+
+  CKEditor.scan = function () {
+    var result = [];
+    if (typeof CKEDITOR == "undefined") {
+      return;
+    }
+    var editorInstance;
+    for (var instanceIdentifier in CKEDITOR.instances) {
+      editorInstance = document.getElementById(instanceIdentifier) || document.getElementsByName(instanceIdentifier)[0];
+      if (editorInstance) {
+        result.push(editorInstance);
+      }
+    }
+    return $(result);
+  };
+
+  CKEditor.tracked = function (el) {
+    if (typeof CKEDITOR == "undefined") {
+      return false;
+    }
+    el = $(el)[0];
+    return !! (CKEDITOR.dom.element.get(el) && CKEDITOR.dom.element.get(el).getEditor());
+  };
+
+  TogetherJS.addTracker(CKEditor, true /* skip setInit */);
+
+  //////////////////// BEGINNING OF TINYMCE ////////////////////////
+  var tinymceEditor = util.Class({
+    trackerName: "tinymceEditor",
+
+    constructor: function (el) {
+      this.element = $(el)[0];
+      assert($(this.element).attr('id').indexOf('mce_') != -1);
+      this._change = this._change.bind(this);
+      this._editor().on("input keyup cut paste change", this._change);
+    },
+
+    tracked: function (el) {
+      return this.element === $(el)[0];
+    },
+
+    destroy: function (el) {
+      this._editor().destory();
+    },
+
+    update: function (msg) {
+      this._editor().setContent(msg.value, {format: 'raw'});
+    },
+
+    init: function (update, msg) {
+      this.update(update);
+    },
+
+    makeInit: function () {
+      return {
+        element: this.element,
+        tracker: this.trackerName,
+        value: this.getContent()
+      };
+    },
+
+    _change: function (e) {
+      if (inRemoteUpdate) {
+        return;
+      }  
+      sendData({
+        tracker: this.trackerName,
+        element: this.element,
+        value: this.getContent()
+      });
+    },
+
+    _editor: function () {
+      if (typeof tinymce == "undefined") {
+        return;
+      }
+      return $(this.element).data("tinyEditor");
+    },
+    
+    getContent: function () {
+      return this._editor().getContent();
+    }
+  });
+
+  tinymceEditor.scan = function () {
+    //scan all the elements that contain tinyMCE editors
+    if (typeof tinymce == "undefined") {
+      return;
+    }
+    var result = [];
+    $(window.tinymce.editors).each(function (i, ed) {
+      result.push($('#'+ed.id));
+      //its impossible to retrieve a single editor from a container, so lets store it
+      $('#'+ed.id).data("tinyEditor", ed);
+    });
+    return $(result);
+  };
+
+  tinymceEditor.tracked = function (el) {
+    if (typeof tinymce == "undefined") {
+      return false;
+    }
+    el = $(el)[0];
+    return !!$(el).data("tinyEditor");
+    /*var flag = false;
+    $(window.tinymce.editors).each(function (i, ed) {
+      if (el.id == ed.id) {
+        flag = true;
+      }
+    });
+    return flag;*/
+  };
+
+  TogetherJS.addTracker(tinymceEditor, true);
+  ///////////////// END OF TINYMCE ///////////////////////////////////
+
+  function buildTrackers() {
+    assert(! liveTrackers.length);
+    util.forEachAttr(editTrackers, function (TrackerClass) {
+      var els = TrackerClass.scan();
+      if (els) {
+        $.each(els, function () {
+          var tracker = new TrackerClass(this);
+          $(this).data("togetherjsHistory", ot.SimpleHistory(session.clientId, tracker.getContent(), 1));
+          liveTrackers.push(tracker);
+        });
+      }
+    });
+  }
+
+  function destroyTrackers() {
+    liveTrackers.forEach(function (tracker) {
+      tracker.destroy();
+    });
+    liveTrackers = [];
+  }
+
+  function elementTracked(el) {
+    var result = false;
+    util.forEachAttr(editTrackers, function (TrackerClass) {
+      if (TrackerClass.tracked(el)) {
+        result = true;
+      }
+    });
+    return result;
+  }
+
+  function getTracker(el, name) {
+    el = $(el)[0];
+    for (var i=0; i<liveTrackers.length; i++) {
+      var tracker = liveTrackers[i];
+      if (tracker.tracked(el)) {
+        //FIXME: assert statement below throws an exception when data is submitted to the hub too fast
+        //in other words, name == tracker.trackerName instead of name == tracker when someone types too fast in the tracked editor
+        //commenting out this assert statement solves the problem
+        assert((! name) || name == tracker.trackerName, "Expected to map to a tracker type", name, "but got", tracker.trackerName);
+        return tracker;
+      }
+    }
+    return null;
+  }
+
+  var TEXT_TYPES = (
+    "color date datetime datetime-local email " +
+        "tel text time week").split(/ /g);
+
+  function isText(el) {
+    el = $(el);
+    var tag = el.prop("tagName");
+    var type = (el.prop("type") || "text").toLowerCase();
+    if (tag == "TEXTAREA") {
+      return true;
+    }
+    if (tag == "INPUT" && TEXT_TYPES.indexOf(type) != -1) {
+      return true;
+    }
+    return false;
+  }
+
+  function getValue(el) {
+    el = $(el);
+    if (isCheckable(el)) {
+      return el.prop("checked");
+    } else {
+      return el.val();
+    }
+  }
+
+  function getElementType(el) {
+    el = $(el)[0];
+    if (el.tagName == "TEXTAREA") {
+      return "textarea";
+    }
+    if (el.tagName == "SELECT") {
+      return "select";
+    }
+    if (el.tagName == "INPUT") {
+      return (el.getAttribute("type") || "text").toLowerCase();
+    }
+    return "?";
+  }
+
+  function setValue(el, value) {
+    el = $(el);
+    var changed = false;
+    if (isCheckable(el)) {
+      var checked = !! el.prop("checked");
+      value = !! value;
+      if (checked != value) {
+        changed = true;
+        el.prop("checked", value);
+      }
+    } else {
+      if (el.val() != value) {
+        changed = true;
+        el.val(value);
+      }
+    }
+    if (changed) {
+      eventMaker.fireChange(el);
+    }
+  }
+
+  /* Send the top of this history queue, if it hasn't been already sent. */
+  function maybeSendUpdate(element, history, tracker) {
+    var change = history.getNextToSend();
+    if (! change) {
+      /* nothing to send */
+      return;
+    }
+    var msg = {
+      type: "form-update",
+      element: element,
+      "server-echo": true,
+      replace: {
+        id: change.id,
+        basis: change.basis,
+        delta: {
+          start: change.delta.start,
+          del: change.delta.del,
+          text: change.delta.text
+        }
+      }
+    };
+    if (tracker) {
+      msg.tracker = tracker;
+    }
+    session.send(msg);
+  }
+
+  session.hub.on("form-update", function (msg) {
+    if (! msg.sameUrl) {
+      return;
+    }
+    var el = $(elementFinder.findElement(msg.element));
+    var tracker;
+    if (msg.tracker) {
+      tracker = getTracker(el, msg.tracker);
+      assert(tracker);
+    }
+    var focusedEl = el[0].ownerDocument.activeElement;
+    var focusedElSelection;
+    if (isText(focusedEl)) {
+      focusedElSelection = [focusedEl.selectionStart, focusedEl.selectionEnd];
+    }
+    var selection;
+    if (isText(el)) {
+      selection = [el[0].selectionStart, el[0].selectionEnd];
+    }
+    var value;
+    if (msg.replace) {
+      var history = el.data("togetherjsHistory");
+      if (!history) {
+        console.warn("form update received for uninitialized form element");
+        return;
+      }
+      history.setSelection(selection);
+      // make a real TextReplace object.
+      msg.replace.delta = ot.TextReplace(msg.replace.delta.start,
+                                         msg.replace.delta.del,
+                                         msg.replace.delta.text);
+      // apply this change to the history
+      var changed = history.commit(msg.replace);
+      var trackerName = null;
+      if (typeof tracker != "undefined") {
+        trackerName = tracker.trackerName;
+      }
+      maybeSendUpdate(msg.element, history, trackerName);
+      if (! changed) {
+        return;
+      }
+      value = history.current;
+      selection = history.getSelection();
+    } else {
+      value = msg.value;
+    }
+    inRemoteUpdate = true;
+    try {
+      if(tracker) {
+        tracker.update({value:value});
+      } else {
+        setValue(el, value);
+      }
+      if (isText(el)) {
+        el[0].selectionStart = selection[0];
+        el[0].selectionEnd = selection[1];
+      }
+      // return focus to original input:
+      if (focusedEl != el[0]) {
+        focusedEl.focus();
+        if (isText(focusedEl)) {
+          focusedEl.selectionStart = focusedElSelection[0];
+          focusedEl.selectionEnd = focusedElSelection[1];
+        }
+      }
+    } finally {
+      inRemoteUpdate = false;
+    }
+  });
+
+  var initSent = false;
+
+  function sendInit() {
+    initSent = true;
+    var msg = {
+      type: "form-init",
+      pageAge: Date.now() - TogetherJS.pageLoaded,
+      updates: []
+    };
+    var els = $("textarea, input, select");
+    els.each(function () {
+      if (elementFinder.ignoreElement(this) || elementTracked(this) ||
+          suppressSync(this)) {
+        return;
+      }
+      var el = $(this);
+      var value = getValue(el);
+      var upd = {
+        element: elementFinder.elementLocation(this),
+        value: value,
+        elementType: getElementType(el)
+      };
+      if (isText(el)) {
+        var history = el.data("togetherjsHistory");
+        if (history) {
+          upd.value = history.committed;
+          upd.basis = history.basis;
+        }
+      }
+      msg.updates.push(upd);
+    });
+    liveTrackers.forEach(function (tracker) {
+      var init = tracker.makeInit();
+      assert(tracker.tracked(init.element));
+      var history = $(init.element).data("togetherjsHistory");
+      if (history) {
+        init.value = history.committed;
+        init.basis = history.basis;
+      }
+      init.element = elementFinder.elementLocation($(init.element));
+      msg.updates.push(init);
+    });
+    if (msg.updates.length) {
+      session.send(msg);
+    }
+  }
+
+  function setInit() {
+    var els = $("textarea, input, select");
+    els.each(function () {
+      if (elementTracked(this)) {
+        return;
+      }
+      if (elementFinder.ignoreElement(this)) {
+        return;
+      }
+      var el = $(this);
+      var value = getValue(el);
+      el.data("togetherjsHistory", ot.SimpleHistory(session.clientId, value, 1));
+    });
+    destroyTrackers();
+    buildTrackers();
+  }
+
+  session.on("reinitialize", setInit);
+
+  session.on("ui-ready", setInit);
+
+  session.on("close", destroyTrackers);
+
+  session.hub.on("form-init", function (msg) {
+    if (! msg.sameUrl) {
+      return;
+    }
+    if (initSent) {
+      // In a 3+-peer situation more than one client may init; in this case
+      // we're probably the other peer, and not the peer that needs the init
+      // A quick check to see if we should init...
+      var myAge = Date.now() - TogetherJS.pageLoaded;
+      if (msg.pageAge < myAge) {
+        // We've been around longer than the other person...
+        return;
+      }
+    }
+    // FIXME: need to figure out when to ignore inits
+    msg.updates.forEach(function (update) {
+      var el;
+      try {
+        el = elementFinder.findElement(update.element);
+      } catch (e) {
+        /* skip missing element */
+        console.warn(e);
+        return;
+      }
+        inRemoteUpdate = true;
+        try {
+          if (update.tracker) {
+            var tracker = getTracker(el, update.tracker);
+            assert(tracker);
+            tracker.init(update, msg);
+          } else {
+            setValue(el, update.value);
+          }
+          if (update.basis) {
+            var history = $(el).data("togetherjsHistory");
+            // don't overwrite history if we're already up to date
+            // (we might have outstanding queued changes we don't want to lose)
+            if (!(history && history.basis === update.basis &&
+                  // if history.basis is 1, the form could have lingering
+                  // edits from before togetherjs was launched.  that's too bad,
+                  // we need to erase them to resynchronize with the peer
+                  // we just asked to join.
+                  history.basis !== 1)) {
+              $(el).data("togetherjsHistory", ot.SimpleHistory(session.clientId, update.value, update.basis));
+            }
+          }
+        } finally {
+          inRemoteUpdate = false;
+        }
+    });
+  });
+
+  var lastFocus = null;
+
+  function focus(event) {
+    var target = event.target;
+    if (elementFinder.ignoreElement(target) || elementTracked(target)) {
+      blur(event);
+      return;
+    }
+    if (target != lastFocus) {
+      lastFocus = target;
+      session.send({type: "form-focus", element: elementFinder.elementLocation(target)});
+    }
+  }
+
+  function blur(event) {
+    var target = event.target;
+    if (lastFocus) {
+      lastFocus = null;
+      session.send({type: "form-focus", element: null});
+    }
+  }
+
+  var focusElements = {};
+
+  session.hub.on("form-focus", function (msg) {
+    var current = focusElements[msg.peer.id];
+    if (current) {
+      current.remove();
+      current = null;
+    }
+    if (! msg.element) {
+      // A blur
+      return;
+    }
+    var element = elementFinder.findElement(msg.element);
+    var el = createFocusElement(msg.peer, element);
+    if (el) {
+      focusElements[msg.peer.id] = el;
+    }
+  });
+
+  session.hub.on("hello", function (msg) {
+    if (lastFocus) {
+      setTimeout(function () {
+        if (lastFocus) {
+          session.send({type: "form-focus", element: elementFinder.elementLocation(lastFocus)});
+        }
+      });
+    }
+  });
+
+  function createFocusElement(peer, around) {
+    around = $(around);
+    var aroundOffset = around.offset();
+    if (! aroundOffset) {
+      console.warn("Could not get offset of element:", around[0]);
+      return null;
+    }
+    var el = templating.sub("focus", {peer: peer});
+    el = el.find(".togetherjs-focus");
+    el.css({
+      top: aroundOffset.top-FOCUS_BUFFER + "px",
+      left: aroundOffset.left-FOCUS_BUFFER + "px",
+      width: around.outerWidth() + (FOCUS_BUFFER*2) + "px",
+      height: around.outerHeight() + (FOCUS_BUFFER*2) + "px"
+    });
+    $(document.body).append(el);
+    return el;
+  }
+
+  session.on("ui-ready", function () {
+    $(document).on("change", change);
+    // note that textInput, keydown, and keypress aren't appropriate events
+    // to watch, since they fire *before* the element's value changes.
+    $(document).on("input keyup cut paste", maybeChange);
+    $(document).on("focusin", focus);
+    $(document).on("focusout", blur);
+  });
+
+  session.on("close", function () {
+    $(document).off("change", change);
+    $(document).off("input keyup cut paste", maybeChange);
+    $(document).off("focusin", focus);
+    $(document).off("focusout", blur);
+  });
+
+  session.hub.on("hello", function (msg) {
+    if (msg.sameUrl) {
+      setTimeout(sendInit);
+    }
+  });
+
+  return forms;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* This module handles all the different UI that happens (sometimes in order) when
+   TogetherJS is started:
+
+   - Introduce the session when you've been invited
+   - Show any browser compatibility indicators
+   - Show the walkthrough the first time
+   - Show the share link window
+
+   When everything is done it fires session.emit("startup-ready")
+
+*/
+define('startup',["util", "require", "jquery", "windowing", "storage"], function (util, require, $, windowing, storage) {
+  var assert = util.assert;
+  var startup = util.Module("startup");
+  // Avoid circular import:
+  var session = null;
+
+  var STEPS = [
+    "browserBroken",
+    "browserUnsupported",
+    "sessionIntro",
+    "walkthrough",
+    // Look in the share() below if you add anything after here:
+    "share"
+    ];
+
+  var currentStep = null;
+
+  startup.start = function () {
+    if (! session) {
+      require(["session"], function (sessionModule) {
+        session = sessionModule;
+        startup.start();
+      });
+      return;
+    }
+    var index = -1;
+    if (currentStep) {
+      index = STEPS.indexOf(currentStep);
+    }
+    index++;
+    if (index >= STEPS.length) {
+      session.emit("startup-ready");
+      return;
+    }
+    currentStep = STEPS[index];
+    handlers[currentStep](startup.start);
+  };
+
+  var handlers = {
+
+    browserBroken: function (next) {
+      if (window.WebSocket) {
+        next();
+        return;
+      }
+      windowing.show("#togetherjs-browser-broken", {
+        onClose: function () {
+          session.close();
+        }
+      });
+      if ($.browser.msie) {
+        $("#togetherjs-browser-broken-is-ie").show();
+      }
+    },
+
+    browserUnsupported: function (next) {
+      if (! $.browser.msie) {
+        next();
+        return;
+      }
+      var cancel = true;
+      windowing.show("#togetherjs-browser-unsupported", {
+        onClose: function () {
+          if (cancel) {
+            session.close();
+          } else {
+            next();
+          }
+        }
+      });
+      $("#togetherjs-browser-unsupported-anyway").click(function () {
+        cancel = false;
+      });
+    },
+
+    sessionIntro: function (next) {
+      // pgbovine - pop open chat
+      windowing.show("#togetherjs-chat");
+
+      if ((! session.isClient) || ! session.firstRun) {
+        next();
+        return;
+      }
+      TogetherJS.config.close("suppressJoinConfirmation");
+      if (TogetherJS.config.get("suppressJoinConfirmation")) {
+        next();
+        return;
+      }
+      var cancelled = false;
+      windowing.show("#togetherjs-intro", {
+        onClose: function () {
+          if (! cancelled) {
+            next();
+          }
+        }
+      });
+      $("#togetherjs-intro .togetherjs-modal-dont-join").click(function () {
+        cancelled = true;
+        windowing.hide();
+        session.close("declined-join");
+      });
+    },
+
+    // pgbovine - disable boilerplate walkthrough popup
+    walkthrough: function (next) {
+      next();
+    },
+    /*
+    walkthrough: function (next) {
+      storage.settings.get("seenIntroDialog").then(function (seenIntroDialog) {
+        if (seenIntroDialog) {
+          next();
+          return;
+        }
+        require(["walkthrough"], function (walkthrough) {
+          walkthrough.start(true, function () {
+            storage.settings.set("seenIntroDialog", true);
+            next();
+          });
+        });
+      });
+    },
+    */
+
+    share: function (next) {
+      TogetherJS.config.close("suppressInvite");
+      if (session.isClient || (! session.firstRun) ||
+          TogetherJS.config.get("suppressInvite")) {
+        next();
+        return;
+      }
+      require(["windowing"], function (windowing) {
+        windowing.show("#togetherjs-share");
+        // FIXME: no way to detect when the window is closed
+        // If there was a next() step then it would not work
+      });
+    }
+
+  };
+
+  return startup;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('templates-localized',[], function () {
+  return {
+    "interface": "__interface_html__",
+    walkthrough: "__walkthrough_html__",
+    names: "__names__"
+  };
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('videos',["jquery", "util", "session", "elementFinder"],
+function ($, util, session, elementFinder) {
+
+  var listeners = [];
+
+  var TIME_UPDATE = 'timeupdate';
+  var MIRRORED_EVENTS = ['play', 'pause'];
+
+  var TOO_FAR_APART = 3000;
+
+  session.on("reinitialize", function () {
+    unsetListeners();
+    setupListeners();
+  });
+
+  session.on("ui-ready", setupListeners);
+
+  function setupListeners() {
+    var videos = $('video');
+    setupMirroredEvents(videos);
+    setupTimeSync(videos);
+  }
+
+  function setupMirroredEvents(videos) {
+    var currentListener;
+    MIRRORED_EVENTS.forEach(function (eventName) {
+      currentListener = makeEventSender(eventName);
+      videos.on(eventName, currentListener);
+      listeners.push({
+        name: eventName,
+        listener: currentListener
+      });
+    });
+  }
+
+  function makeEventSender(eventName) {
+    return function (event, options) {
+      var element = event.target;
+      options || (options = {});
+      if (!options.silent) {
+        session.send({
+          type: ('video-'+eventName),
+          location: elementFinder.elementLocation(element),
+          position: element.currentTime
+        });
+      }
+    };
+  }
+
+  function setupTimeSync(videos) {
+    videos.each(function(i, video) {
+      var onTimeUpdate = makeTimeUpdater();
+      $(video).on(TIME_UPDATE, onTimeUpdate);
+      listeners.push({
+        name: TIME_UPDATE,
+        listener: onTimeUpdate
+      });
+    });
+  }
+
+  function makeTimeUpdater() {
+    var last = 0;
+    return function (event) {
+      var currentTime = event.target.currentTime;
+      if(areTooFarApart(currentTime, last)){
+        makeEventSender(TIME_UPDATE)(event);
+      }
+      last = currentTime;
+    };
+  }
+
+  function areTooFarApart(currentTime, lastTime) {
+    var secDiff = Math.abs(currentTime - lastTime);
+    var milliDiff = secDiff * 1000;
+    return milliDiff > TOO_FAR_APART;
+  }
+
+  session.on("close", unsetListeners);
+
+  function unsetListeners() {
+    var videos = $('video');
+    listeners.forEach(function (event) {
+        videos.off(event.name, event.listener);
+    });
+    listeners = [];
+  }
+
+
+  session.hub.on('video-timeupdate', function (msg) {
+    var element = $findElement(msg.location);
+    var oldTime = element.prop('currentTime');
+    var newTime = msg.position;
+
+    //to help throttle uneccesary position changes
+    if(areTooFarApart(oldTime, newTime)){
+      setTime(element, msg.position);
+    }
+  });
+
+  MIRRORED_EVENTS.forEach( function (eventName) {
+    session.hub.on("video-"+eventName, function (msg) {
+      var element = $findElement(msg.location);
+
+      setTime(element, msg.position);
+
+      element.trigger(eventName, {silent: true});
+    });
+  });
+
+  //Currently does not discriminate between visible and invisible videos
+  function $findElement(location) {
+    return $(elementFinder.findElement(location));
+  }
+
+  function setTime(video, time) {
+    video.prop('currentTime', time);
+  }
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('walkthrough',["util", "ui", "jquery", "windowing", "templates", "templating", "session", "peers"], function (util, ui, $, windowing, templates, templating, session, peers) {
+  var assert = util.assert;
+  var walkthrough = util.Module("walkthrough");
+  var onHideAll = null;
+  var container = null;
+
+  var slides = null;
+
+  walkthrough.start = function (firstTime, doneCallback) {
+    if (! container) {
+      container = $(templates("walkthrough"));
+      container.hide();
+      ui.container.append(container);
+      slides = container.find(".togetherjs-walkthrough-slide");
+      slides.hide();
+      var progress = $("#togetherjs-walkthrough-progress");
+      slides.each(function (index) {
+        var bullet = templating.sub("walkthrough-slide-progress");
+        progress.append(bullet);
+        bullet.click(function () {
+          show(index);
+        });
+      });
+      container.find("#togetherjs-walkthrough-previous").click(previous);
+      container.find("#togetherjs-walkthrough-next").click(next);
+      ui.prepareShareLink(container);
+      container.find(".togetherjs-self-name").bind("keyup", function (event) {
+        var val = $(event.target).val();
+        peers.Self.update({name: val});
+      });
+      container.find(".togetherjs-swatch").click(function () {
+        var picker = $("#togetherjs-pick-color");
+        if (picker.is(":visible")) {
+          picker.hide();
+          return;
+        }
+        picker.show();
+        picker.find(".togetherjs-swatch-active").removeClass("togetherjs-swatch-active");
+        picker.find(".togetherjs-swatch[data-color=\"" + peers.Self.color + "\"]").addClass("togetherjs-swatch-active");
+        var location = container.find(".togetherjs-swatch").offset();
+        picker.css({
+          top: location.top,
+          // The -7 comes out of thin air, but puts it in the right place:
+          left: location.left-7
+        });
+      });
+      if (session.isClient) {
+        container.find(".togetherjs-if-creator").remove();
+        container.find(".togetherjs-ifnot-creator").show();
+      } else {
+        container.find(".togetherjs-if-creator").show();
+        container.find(".togetherjs-ifnot-creator").remove();
+      }
+      TogetherJS.config.track("siteName", function (value) {
+        value = value || document.title;
+        container.find(".togetherjs-site-name").text(value);
+      });
+      ui.activateAvatarEdit(container, {
+        onSave: function () {
+          container.find("#togetherjs-avatar-when-saved").show();
+          container.find("#togetherjs-avatar-when-unsaved").hide();
+        },
+        onPending: function () {
+          container.find("#togetherjs-avatar-when-saved").hide();
+          container.find("#togetherjs-avatar-when-unsaved").show();
+        }
+      });
+      // This triggers substititions in the walkthrough:
+      peers.Self.update({});
+      session.emit("new-element", container);
+    }
+    assert(typeof firstTime == "boolean", "You must provide a firstTime boolean parameter");
+    if (firstTime) {
+      container.find(".togetherjs-walkthrough-firsttime").show();
+      container.find(".togetherjs-walkthrough-not-firsttime").hide();
+    } else {
+      container.find(".togetherjs-walkthrough-firsttime").hide();
+      container.find(".togetherjs-walkthrough-not-firsttime").show();
+    }
+    onHideAll = doneCallback;
+    show(0);
+    windowing.show(container);
+  };
+
+  function show(index) {
+    slides.hide();
+    $(slides[index]).show();
+    var bullets = container.find("#togetherjs-walkthrough-progress .togetherjs-walkthrough-slide-progress");
+    bullets.removeClass("togetherjs-active");
+    $(bullets[index]).addClass("togetherjs-active");
+    var $next = $("#togetherjs-walkthrough-next").removeClass("togetherjs-disabled");
+    var $previous = $("#togetherjs-walkthrough-previous").removeClass("togetherjs-disabled");
+    if (index == slides.length - 1) {
+      $next.addClass("togetherjs-disabled");
+    } else if (index === 0) {
+      $previous.addClass("togetherjs-disabled");
+    }
+  }
+
+  function previous() {
+    var index = getIndex();
+    index--;
+    if (index < 0) {
+      index = 0;
+    }
+    show(index);
+  }
+
+  function next() {
+    var index = getIndex();
+    index++;
+    if (index >= slides.length) {
+      index = slides.length-1;
+    }
+    show(index);
+  }
+
+  function getIndex() {
+    var active = slides.filter(":visible");
+    if (! active.length) {
+      return 0;
+    }
+    for (var i=0; i<slides.length; i++) {
+      if (slides[i] == active[0]) {
+        return i;
+      }
+    }
+    return 0;
+  }
+
+  walkthrough.stop = function () {
+    windowing.hide(container);
+    if (onHideAll) {
+      onHideAll();
+      onHideAll = null;
+    }
+  };
+
+  session.on("hide-window", function () {
+    if (onHideAll) {
+      onHideAll();
+      onHideAll = null;
+    }
+  });
+
+  return walkthrough;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// WebRTC support -- Note that this relies on parts of the interface code that usually goes in ui.js
+
+define('webrtc',["require", "jquery", "util", "session", "ui", "peers", "storage", "windowing"], function (require, $, util, session, ui, peers, storage, windowing) {
+  var webrtc = util.Module("webrtc");
+  var assert = util.assert;
+
+  session.RTCSupported = !!(window.mozRTCPeerConnection ||
+                            window.webkitRTCPeerConnection ||
+                            window.RTCPeerConnection);
+
+  if (session.RTCSupported && $.browser.mozilla && parseInt($.browser.version, 10) <= 19) {
+    // In a few versions of Firefox (18 and 19) these APIs are present but
+    // not actually usable
+    // See: https://bugzilla.mozilla.org/show_bug.cgi?id=828839
+    // Because they could be pref'd on we'll do a quick check:
+    try {
+      (function () {
+        var conn = new window.mozRTCPeerConnection();
+      })();
+    } catch (e) {
+      session.RTCSupported = false;
+    }
+  }
+
+  var mediaConstraints = {
+    mandatory: {
+      OfferToReceiveAudio: true,
+      OfferToReceiveVideo: false
+    }
+  };
+  if (window.mozRTCPeerConnection) {
+    mediaConstraints.mandatory.MozDontOfferDataChannel = true;
+  }
+
+  var URL = window.webkitURL || window.URL;
+  var RTCSessionDescription = window.mozRTCSessionDescription || window.webkitRTCSessionDescription || window.RTCSessionDescription;
+  var RTCIceCandidate = window.mozRTCIceCandidate || window.webkitRTCIceCandidate || window.RTCIceCandidate;
+
+  function makePeerConnection() {
+    // Based roughly off: https://github.com/firebase/gupshup/blob/gh-pages/js/chat.js
+    if (window.webkitRTCPeerConnection) {
+      return new webkitRTCPeerConnection({
+        "iceServers": [{"url": "stun:stun.l.google.com:19302"}]
+      }, {
+        "optional": [{"DtlsSrtpKeyAgreement": true}]
+      });
+    }
+    if (window.mozRTCPeerConnection) {
+      return new mozRTCPeerConnection({
+        // Or stun:124.124.124..2 ?
+        "iceServers": [{"url": "stun:23.21.150.121"}]
+      }, {
+        "optional": []
+      });
+    }
+    throw new util.AssertionError("Called makePeerConnection() without supported connection");
+  }
+
+  function ensureCryptoLine(sdp) {
+    if (! window.mozRTCPeerConnection) {
+      return sdp;
+    }
+
+    var sdpLinesIn = sdp.split('\r\n');
+    var sdpLinesOut = [];
+
+    // Search for m line.
+    for (var i = 0; i < sdpLinesIn.length; i++) {
+      sdpLinesOut.push(sdpLinesIn[i]);
+      if (sdpLinesIn[i].search('m=') !== -1) {
+        sdpLinesOut.push("a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
+      }
+    }
+
+    sdp = sdpLinesOut.join('\r\n');
+    return sdp;
+  }
+
+  function getUserMedia(options, success, failure) {
+    failure = failure || function (error) {
+      console.error("Error in getUserMedia:", error);
+    };
+    (navigator.getUserMedia ||
+     navigator.mozGetUserMedia ||
+     navigator.webkitGetUserMedia ||
+     navigator.msGetUserMedia).call(navigator, options, success, failure);
+  }
+
+  /****************************************
+   * getUserMedia Avatar support
+   */
+
+  session.on("ui-ready", function () {
+    $("#togetherjs-self-avatar").click(function () {
+      var avatar = peers.Self.avatar;
+      if (avatar) {
+        $preview.attr("src", avatar);
+      }
+      ui.displayToggle("#togetherjs-avatar-edit");
+    });
+    if (! session.RTCSupported) {
+      $("#togetherjs-avatar-edit-rtc").hide();
+    }
+
+    var avatarData = null;
+    var $preview = $("#togetherjs-self-avatar-preview");
+    var $accept = $("#togetherjs-self-avatar-accept");
+    var $cancel = $("#togetherjs-self-avatar-cancel");
+    var $takePic = $("#togetherjs-avatar-use-camera");
+    var $video = $("#togetherjs-avatar-video");
+    var $upload = $("#togetherjs-avatar-upload");
+
+    $takePic.click(function () {
+      if (! streaming) {
+        startStreaming();
+        return;
+      }
+      takePicture();
+    });
+
+    function savePicture(dataUrl) {
+      avatarData = dataUrl;
+      $preview.attr("src", avatarData);
+      $accept.attr("disabled", null);
+    }
+
+    $accept.click(function () {
+      peers.Self.update({avatar:  avatarData});
+      ui.displayToggle("#togetherjs-no-avatar-edit");
+      // FIXME: these probably shouldn't be two elements:
+      $("#togetherjs-participants-other").show();
+      $accept.attr("disabled", "1");
+    });
+
+    $cancel.click(function () {
+      ui.displayToggle("#togetherjs-no-avatar-edit");
+      // FIXME: like above:
+      $("#togetherjs-participants-other").show();
+    });
+
+    var streaming = false;
+    function startStreaming() {
+      getUserMedia({
+          video: true,
+          audio: false
+        },
+        function(stream) {
+          streaming = true;
+          $video[0].src = URL.createObjectURL(stream);
+          $video[0].play();
+        },
+        function(err) {
+          // FIXME: should pop up help or something in the case of a user
+          // cancel
+          console.error("getUserMedia error:", err);
+        }
+      );
+    }
+
+    function takePicture() {
+      assert(streaming);
+      var height = $video[0].videoHeight;
+      var width = $video[0].videoWidth;
+      width = width * (session.AVATAR_SIZE / height);
+      height = session.AVATAR_SIZE;
+      var $canvas = $("<canvas>");
+      $canvas[0].height = session.AVATAR_SIZE;
+      $canvas[0].width = session.AVATAR_SIZE;
+      var context = $canvas[0].getContext("2d");
+      context.arc(session.AVATAR_SIZE/2, session.AVATAR_SIZE/2, session.AVATAR_SIZE/2, 0, Math.PI*2);
+      context.closePath();
+      context.clip();
+      context.drawImage($video[0], (session.AVATAR_SIZE - width) / 2, 0, width, height);
+      savePicture($canvas[0].toDataURL("image/png"));
+    }
+
+    $upload.on("change", function () {
+      var reader = new FileReader();
+      reader.onload = function () {
+        // FIXME: I don't actually know it's JPEG, but it's probably a
+        // good enough guess:
+        var url = "data:image/jpeg;base64," + util.blobToBase64(this.result);
+        convertImage(url, function (result) {
+          savePicture(result);
+        });
+      };
+      reader.onerror = function () {
+        console.error("Error reading file:", this.error);
+      };
+      reader.readAsArrayBuffer(this.files[0]);
+    });
+
+    function convertImage(imageUrl, callback) {
+      var $canvas = $("<canvas>");
+      $canvas[0].height = session.AVATAR_SIZE;
+      $canvas[0].width = session.AVATAR_SIZE;
+      var context = $canvas[0].getContext("2d");
+      var img = new Image();
+      img.src = imageUrl;
+      // Sometimes the DOM updates immediately to call
+      // naturalWidth/etc, and sometimes it doesn't; using setTimeout
+      // gives it a chance to catch up
+      setTimeout(function () {
+        var width = img.naturalWidth || img.width;
+        var height = img.naturalHeight || img.height;
+        width = width * (session.AVATAR_SIZE / height);
+        height = session.AVATAR_SIZE;
+        context.drawImage(img, 0, 0, width, height);
+        callback($canvas[0].toDataURL("image/png"));
+      });
+    }
+
+  });
+
+  /****************************************
+   * RTC support
+   */
+
+  function audioButton(selector) {
+    ui.displayToggle(selector);
+    if (selector == "#togetherjs-audio-incoming") {
+      $("#togetherjs-audio-button").addClass("togetherjs-animated").addClass("togetherjs-color-alert");
+    } else {
+      $("#togetherjs-audio-button").removeClass("togetherjs-animated").removeClass("togetherjs-color-alert");
+    }
+  }
+
+  session.on("ui-ready", function () {
+    $("#togetherjs-audio-button").click(function () {
+      if ($("#togetherjs-rtc-info").is(":visible")) {
+        windowing.hide();
+        return;
+      }
+      if (session.RTCSupported) {
+        enableAudio();
+      } else {
+        windowing.show("#togetherjs-rtc-not-supported");
+      }
+    });
+
+    if (! session.RTCSupported) {
+      audioButton("#togetherjs-audio-unavailable");
+      return;
+    }
+    audioButton("#togetherjs-audio-ready");
+
+    var audioStream = null;
+    var accepted = false;
+    var connected = false;
+    var $audio = $("#togetherjs-audio-element");
+    var offerSent = null;
+    var offerReceived = null;
+    var offerDescription = false;
+    var answerSent = null;
+    var answerReceived = null;
+    var answerDescription = false;
+    var _connection = null;
+    var iceCandidate = null;
+
+    function enableAudio() {
+      accepted = true;
+      storage.settings.get("dontShowRtcInfo").then(function (dontShow) {
+        if (! dontShow) {
+          windowing.show("#togetherjs-rtc-info");
+        }
+      });
+      if (! audioStream) {
+        startStreaming(connect);
+        return;
+      }
+      if (! connected) {
+        connect();
+      }
+      toggleMute();
+    }
+
+    ui.container.find("#togetherjs-rtc-info .togetherjs-dont-show-again").change(function () {
+      storage.settings.set("dontShowRtcInfo", this.checked);
+    });
+
+    function error() {
+      console.warn.apply(console, arguments);
+      var s = "";
+      for (var i=0; i<arguments.length; i++) {
+        if (s) {
+          s += " ";
+        }
+        var a = arguments[i];
+        if (typeof a == "string") {
+          s += a;
+        } else {
+          var repl;
+          try {
+            repl = JSON.stringify(a);
+          } catch (e) {
+          }
+          if (! repl) {
+            repl = "" + a;
+          }
+          s += repl;
+        }
+      }
+      audioButton("#togetherjs-audio-error");
+      // FIXME: this title doesn't seem to display?
+      $("#togetherjs-audio-error").attr("title", s);
+    }
+
+    function startStreaming(callback) {
+      getUserMedia(
+        {
+          video: false,
+          audio: true
+        },
+        function (stream) {
+          audioStream = stream;
+          attachMedia("#togetherjs-local-audio", stream);
+          if (callback) {
+            callback();
+          }
+        },
+        function (err) {
+          // FIXME: handle cancel case
+          if (err && err.code == 1) {
+            // User cancel
+            return;
+          }
+          error("getUserMedia error:", err);
+        }
+      );
+    }
+
+    function attachMedia(element, media) {
+      element = $(element)[0];
+      console.log("Attaching", media, "to", element);
+      if (window.mozRTCPeerConnection) {
+        element.mozSrcObject = media;
+        element.play();
+      } else {
+        element.autoplay = true;
+        element.src = URL.createObjectURL(media);
+      }
+    }
+
+    function getConnection() {
+      assert(audioStream);
+      if (_connection) {
+        return _connection;
+      }
+      try {
+        _connection = makePeerConnection();
+      } catch (e) {
+        error("Error creating PeerConnection:", e);
+        throw e;
+      }
+      _connection.onaddstream = function (event) {
+        console.log("got event", event, event.type);
+        attachMedia($audio, event.stream);
+        audioButton("#togetherjs-audio-active");
+      };
+      _connection.onstatechange = function () {
+        // FIXME: this doesn't seem to work:
+        // Actually just doesn't work on Firefox
+        console.log("state change", _connection.readyState);
+        if (_connection.readyState == "closed") {
+          audioButton("#togetherjs-audio-ready");
+        }
+      };
+      _connection.onicecandidate = function (event) {
+        if (event.candidate) {
+          session.send({
+            type: "rtc-ice-candidate",
+            candidate: {
+              sdpMLineIndex: event.candidate.sdpMLineIndex,
+              sdpMid: event.candidate.sdpMid,
+              candidate: event.candidate.candidate
+            }
+          });
+        }
+      };
+      _connection.addStream(audioStream);
+      return _connection;
+    }
+
+    function addIceCandidate() {
+      if (iceCandidate) {
+        console.log("adding ice", iceCandidate);
+        _connection.addIceCandidate(new RTCIceCandidate(iceCandidate));
+      }
+    }
+
+    function connect() {
+      var connection = getConnection();
+      if (offerReceived && (! offerDescription)) {
+        connection.setRemoteDescription(
+          new RTCSessionDescription({
+            type: "offer",
+            sdp: offerReceived
+          }),
+          function () {
+            offerDescription = true;
+            addIceCandidate();
+            connect();
+          },
+          function (err) {
+            error("Error doing RTC setRemoteDescription:", err);
+          }
+        );
+        return;
+      }
+      if (! (offerSent || offerReceived)) {
+        connection.createOffer(function (offer) {
+          console.log("made offer", offer);
+          offer.sdp = ensureCryptoLine(offer.sdp);
+          connection.setLocalDescription(
+            offer,
+            function () {
+              session.send({
+                type: "rtc-offer",
+                offer: offer.sdp
+              });
+              offerSent = offer;
+              audioButton("#togetherjs-audio-outgoing");
+            },
+            function (err) {
+              error("Error doing RTC setLocalDescription:", err);
+            },
+            mediaConstraints
+          );
+        }, function (err) {
+          error("Error doing RTC createOffer:", err);
+        });
+      } else if (! (answerSent || answerReceived)) {
+        // FIXME: I might have only needed this due to my own bugs, this might
+        // not actually time out
+        var timeout = setTimeout(function () {
+          if (! answerSent) {
+            error("createAnswer Timed out; reload or restart browser");
+          }
+        }, 2000);
+        connection.createAnswer(function (answer) {
+          answer.sdp = ensureCryptoLine(answer.sdp);
+          clearTimeout(timeout);
+          connection.setLocalDescription(
+            answer,
+            function () {
+              session.send({
+                type: "rtc-answer",
+                answer: answer.sdp
+              });
+              answerSent = answer;
+            },
+            function (err) {
+              clearTimeout(timeout);
+              error("Error doing RTC setLocalDescription:", err);
+            },
+            mediaConstraints
+          );
+        }, function (err) {
+          error("Error doing RTC createAnswer:", err);
+        });
+      }
+    }
+
+    function toggleMute() {
+      // FIXME: implement.  Actually, wait for this to be implementable - currently
+      // muting of localStreams isn't possible
+      // FIXME: replace with hang-up?
+    }
+
+    session.hub.on("rtc-offer", function (msg) {
+      if (offerReceived || answerSent || answerReceived || offerSent) {
+        abort();
+      }
+      offerReceived = msg.offer;
+      if (! accepted) {
+        audioButton("#togetherjs-audio-incoming");
+        return;
+      }
+      function run() {
+        var connection = getConnection();
+        connection.setRemoteDescription(
+          new RTCSessionDescription({
+            type: "offer",
+            sdp: offerReceived
+          }),
+          function () {
+            offerDescription = true;
+            addIceCandidate();
+            connect();
+          },
+          function (err) {
+            error("Error doing RTC setRemoteDescription:", err);
+          }
+        );
+      }
+      if (! audioStream) {
+        startStreaming(run);
+      } else {
+        run();
+      }
+    });
+
+    session.hub.on("rtc-answer", function (msg) {
+      if (answerSent || answerReceived || offerReceived || (! offerSent)) {
+        abort();
+        // Basically we have to abort and try again.  We'll expect the other
+        // client to restart when appropriate
+        session.send({type: "rtc-abort"});
+        return;
+      }
+      answerReceived = msg.answer;
+      assert(offerSent);
+      assert(audioStream);
+      var connection = getConnection();
+      connection.setRemoteDescription(
+        new RTCSessionDescription({
+          type: "answer",
+          sdp: answerReceived
+        }),
+        function () {
+          answerDescription = true;
+          // FIXME: I don't think this connect is ever needed?
+          connect();
+        },
+        function (err) {
+          error("Error doing RTC setRemoteDescription:", err);
+        }
+      );
+    });
+
+    session.hub.on("rtc-ice-candidate", function (msg) {
+      iceCandidate = msg.candidate;
+      if (offerDescription || answerDescription) {
+        addIceCandidate();
+      }
+    });
+
+    session.hub.on("rtc-abort", function (msg) {
+      abort();
+      if (! accepted) {
+        return;
+      }
+      if (! audioStream) {
+        startStreaming(function () {
+          connect();
+        });
+      } else {
+        connect();
+      }
+    });
+
+    session.hub.on("hello", function (msg) {
+      // FIXME: displayToggle should be set due to
+      // _connection.onstatechange, but that's not working, so
+      // instead:
+      audioButton("#togetherjs-audio-ready");
+      if (accepted && (offerSent || answerSent)) {
+        abort();
+        connect();
+      }
+    });
+
+    function abort() {
+      answerSent = answerReceived = offerSent = offerReceived = null;
+      answerDescription = offerDescription = false;
+      _connection = null;
+      $audio[0].removeAttribute("src");
+    }
+
+  });
+
+  return webrtc;
+
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define('who',["util", "channels", "session", "ui"], function (util, channels, session, ui) {
+  var assert = util.assert;
+  var who = util.Module("who");
+  var MAX_RESPONSE_TIME = 5000;
+  var MAX_LATE_RESPONSE = 2000;
+
+  who.getList = function (hubUrl) {
+    return util.Deferred(function (def) {
+      var expected;
+      var channel = channels.WebSocketChannel(hubUrl);
+      var users = {};
+      var responded = 0;
+      var firstResponse = 0;
+      var lateResponseTimeout;
+      channel.onmessage = function (msg) {
+        if (msg.type == "init-connection") {
+          expected = msg.peerCount;
+        }
+        if (msg.type == "who") {
+          // Our message back to ourselves probably
+          firstResponse = setTimeout(function () {
+            close();
+          }, MAX_LATE_RESPONSE);
+        }
+        if (msg.type == "hello-back") {
+          if (! users[msg.clientId]) {
+            users[msg.clientId] = who.ExternalPeer(msg.clientId, msg);
+            responded++;
+            if (expected && responded >= expected) {
+              close();
+            } else {
+              def.notify(users);
+            }
+          }
+        }
+        console.log("users", users);
+      };
+      channel.send({
+        type: "who",
+        "server-echo": true,
+        clientId: null
+      });
+      var timeout = setTimeout(function () {
+        close();
+      }, MAX_RESPONSE_TIME);
+      function close() {
+        if (timeout) {
+          clearTimeout(timeout);
+        }
+        if (lateResponseTimeout) {
+          clearTimeout(lateResponseTimeout);
+        }
+        channel.close();
+        def.resolve(users);
+      }
+    });
+  };
+
+  who.invite = function (hubUrl, clientId) {
+    return util.Deferred(function (def) {
+      var channel = channels.WebSocketChannel(hubUrl);
+      var id = util.generateId();
+      channel.onmessage = function (msg) {
+        if (msg.type == "invite" && msg.inviteId == id) {
+          channel.close();
+          def.resolve();
+        }
+      };
+      var userInfo = session.makeHelloMessage(false);
+      delete userInfo.type;
+      userInfo.clientId = session.clientId;
+      channel.send({
+        type: "invite",
+        inviteId: id,
+        url: session.shareUrl(),
+        userInfo: userInfo,
+        forClientId: clientId,
+        clientId: null,
+        "server-echo": true
+      });
+    });
+  };
+
+  who.ExternalPeer = util.Class({
+    isSelf: false,
+    isExternal: true,
+    constructor: function (id, attrs) {
+      attrs = attrs || {};
+      assert(id);
+      this.id = id;
+      this.identityId = attrs.identityId || null;
+      this.status = attrs.status || "live";
+      this.idle = attrs.status || "active";
+      this.name = attrs.name || null;
+      this.avatar = attrs.avatar || null;
+      this.color = attrs.color || "#00FF00";
+      this.lastMessageDate = 0;
+      this.view = ui.PeerView(this);
+    },
+
+    className: function (prefix) {
+      prefix = prefix || "";
+      return prefix + util.safeClassName(this.id);
+    }
+
+  });
+
+  return who;
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http:// mozilla.org/MPL/2.0/. */
+
+define('youtubeVideos',["jquery", "util", "session", "elementFinder"],
+function ($, util, session, elementFinder) {
+
+  // constant var to indicate whether two players are too far apart in sync
+  var TOO_FAR_APART = 3000;
+  // embedded youtube iframes
+  var youTubeIframes = [];
+  // youtube API load delay
+  var API_LOADING_DELAY = 2000;
+
+  session.on("reinitialize", function () {
+    if (TogetherJS.config.get("youtube")) {
+      prepareYouTube();
+    }
+  });
+
+  session.on("close", function () {
+    $(youTubeIframes).each(function (i, iframe) {
+      // detach players from iframes
+      $(iframe).removeData("togetherjs-player");
+      $(iframe).removeData("dontPublish");
+      $(iframe).removeData("currentVideoId");
+      // disable iframeAPI
+      $(iframe).removeAttr("enablejsapi");
+      // remove unique youtube iframe indicators
+      var id = $(iframe).attr("id") || "";
+      if (id.indexOf("youtube-player") === 0) {
+        // An id we added
+        $(iframe).removeAttr("id");
+      }
+      youTubeIframes = [];
+    });
+  });
+
+  TogetherJS.config.track("youtube", function (track, previous) {
+    if (track && ! previous) {
+      prepareYouTube();
+      // You can enable youtube dynamically, but can't turn it off:
+      TogetherJS.config.close("youtube");
+    }
+  });
+
+  function prepareYouTube() {
+    // setup iframes first
+    setupYouTubeIframes();
+
+    // this function should be global so it can be called when API is loaded
+    window.onYouTubeIframeAPIReady = function() {
+      // YouTube API is ready
+      $(youTubeIframes).each(function (i, iframe) {
+        var player = new YT.Player(iframe.id, { // get the reference to the already existing iframe
+          events: {
+            'onReady': insertPlayer,
+            'onStateChange': publishPlayerStateChange
+          }
+        });
+      });
+    };
+
+    if (window.YT === undefined) {
+      // load necessary API
+      // it calls onYouTubeIframeAPIReady automatically when the API finishes loading
+      var tag = document.createElement('script');
+      tag.src = "https://www.youtube.com/iframe_api";
+      var firstScriptTag = document.getElementsByTagName('script')[0];
+      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
+    } else {
+      // manually invoke APIReady function when the API was already loaded by user
+      onYouTubeIframeAPIReady();
+    }
+
+    // give each youtube iframe a unique id and set its enablejsapi param to true
+    function setupYouTubeIframes() {
+      var iframes = $('iframe');
+      iframes.each(function (i, iframe) {
+        // if the iframe's unique id is already set, skip it
+        // FIXME: what if the user manually sets an iframe's id (i.e. "#my-youtube")?
+        // maybe we should set iframes everytime togetherjs is reinitialized?
+        if (($(iframe).attr("src") || "").indexOf("youtube") != -1 && !$(iframe).attr("id")) {
+          $(iframe).attr("id", "youtube-player"+i);
+          $(iframe).attr("enablejsapi", 1);
+          youTubeIframes[i] = iframe;
+        }
+      });
+    } // iframes are ready
+
+    function insertPlayer(event) {
+      // only when it is READY, attach a player to its iframe
+      var currentPlayer = event.target;
+      var currentIframe = currentPlayer.a;
+      // check if a player is already attached in case of being reinitialized
+      if (!$(currentIframe).data("togetherjs-player")) {
+        $(currentIframe).data("togetherjs-player", currentPlayer);
+        // initialize its dontPublish flag as well
+        $(currentIframe).data("dontPublish", false);
+        // store its current video's id
+        var currentVideoId = getVideoIdFromUrl(currentPlayer.getVideoUrl());
+        $(currentIframe).data("currentVideoId", currentVideoId);
+      }
+    }
+  } // end of prepareYouTube
+
+  function publishPlayerStateChange(event) {
+    var target = event.target; 
+    var currentIframe = target.a;
+    // FIXME: player object retrieved from event.target has an incomplete set of essential functions
+    // this is most likely due to a recently-introduced problem with current YouTube API as others have been reporting the same issue (12/18/`13)
+    //var currentPlayer = target;
+    //var currentTime = currentPlayer.getCurrentTime();
+    var currentPlayer = $(currentIframe).data("togetherjs-player");
+    var currentTime = target.k.currentTime;
+    var iframeLocation = elementFinder.elementLocation(currentIframe);
+
+    if ($(currentPlayer).data("seek")) {
+      $(currentPlayer).removeData("seek");
+      return;
+    }
+
+    // do not publish if playerState was changed by other users
+    if ($(currentIframe).data("dontPublish")) {
+      // make it false again so it can start publishing events of its own state changes
+      $(currentIframe).data("dontPublish", false);
+      return;
+    }
+
+    // notify other people that I changed the player state
+    if (event.data == YT.PlayerState.PLAYING) {
+
+      var currentVideoId = isDifferentVideoLoaded(currentIframe);
+      if (currentVideoId) {
+        // notify that I just loaded another video
+        publishDifferentVideoLoaded(iframeLocation, currentVideoId);
+        // update current video id
+        $(currentIframe).data("currentVideoId", currentVideoId);
+      } else {
+        session.send({
+          type: "playerStateChange",
+          element: iframeLocation,
+          playerState: 1,
+          playerTime: currentTime
+        });
+      }
+    } else if (event.data == YT.PlayerState.PAUSED) {
+      session.send({
+        type: "playerStateChange",
+        element: iframeLocation,
+        playerState: 2,
+        playerTime: currentTime
+      });
+    } else {
+      // do nothing when the state is buffering, cued, or ended
+      return;
+    }
+  }
+
+  function publishDifferentVideoLoaded(iframeLocation, videoId) {
+    session.send({
+      type: "differentVideoLoaded",
+      videoId: videoId,
+      element: iframeLocation
+    });
+  }
+
+  session.hub.on('playerStateChange', function (msg) {
+    var iframe = elementFinder.findElement(msg.element);
+    var player = $(iframe).data("togetherjs-player");
+    var currentTime = player.getCurrentTime();
+    var currentState = player.getPlayerState();
+
+    if (currentState != msg.playerState) {
+      $(iframe).data("dontPublish", true);
+    }
+
+    if (msg.playerState == 1) {
+      player.playVideo();
+      // seekTo() updates the video's time and plays it if it was already playing
+      // and pauses it if it was already paused
+      if (areTooFarApart(currentTime, msg.playerTime)) {
+        player.seekTo(msg.playerTime, true);
+      }
+    } else if (msg.playerState == 2) {
+      // When YouTube videos are advanced while playing,
+      // Chrome: pause -> pause -> play (onStateChange is called even when it is from pause to pause)
+      // FireFox: buffering -> play -> buffering -> play
+      // We must prevent advanced videos from going out of sync
+      player.pauseVideo();
+      if (areTooFarApart(currentTime, msg.playerTime)) {
+        // "seek" flag will help supress publishing unwanted state changes
+        $(player).data("seek", true);
+        player.seekTo(msg.playerTime, true);
+      }
+    }
+  });
+
+  // if a late user joins a channel, synchronize his videos
+  session.hub.on('hello', function () {
+    // wait a couple seconds to make sure the late user has finished loading API
+    setTimeout(synchronizeVideosOfLateGuest, API_LOADING_DELAY);
+  });
+
+  session.hub.on('synchronizeVideosOfLateGuest', function (msg) {
+    var iframe = elementFinder.findElement(msg.element);
+    var player = $(iframe).data("togetherjs-player");
+    // check if another video had been loaded to an existing iframe before I joined
+    var currentVideoId = $(iframe).data("currentVideoId");
+    if (msg.videoId != currentVideoId) {
+      $(iframe).data("currentVideoId", msg.videoId);
+      player.loadVideoById(msg.videoId, msg.playerTime, 'default');
+    } else {
+      // if the video is only cued, I do not have to do anything to sync
+      if (msg.playerState != 5) {
+        player.seekTo(msg.playerTime, true);
+      }
+    }
+  });
+
+  session.hub.on('differentVideoLoaded', function (msg) {
+    // load a new video if the host has loaded one
+    var iframe = elementFinder.findElement(msg.element);
+    var player = $(iframe).data("togetherjs-player");
+    player.loadVideoById(msg.videoId, 0, 'default');
+    $(iframe).data("currentVideoId", msg.videoId);
+
+  });
+
+  function synchronizeVideosOfLateGuest() {
+    youTubeIframes.forEach(function (iframe) {
+      var currentPlayer = $(iframe).data("togetherjs-player");
+      var currentVideoId = getVideoIdFromUrl(currentPlayer.getVideoUrl());
+      var currentState = currentPlayer.getPlayerState();
+      var currentTime = currentPlayer.getCurrentTime();
+      var iframeLocation = elementFinder.elementLocation(iframe);
+      session.send({
+        type: "synchronizeVideosOfLateGuest",
+        element: iframeLocation,
+        videoId: currentVideoId,
+        playerState: currentState, //this might be necessary later
+        playerTime: currentTime
+      });
+    });
+  }
+
+  function isDifferentVideoLoaded(iframe) {
+    var lastVideoId = $(iframe).data("currentVideoId");
+    var currentPlayer = $(iframe).data("togetherjs-player");
+    var currentVideoId = getVideoIdFromUrl(currentPlayer.getVideoUrl());
+
+    // since url forms of iframe src and player's video url are different,
+    // I have to compare the video ids
+    if (currentVideoId != lastVideoId) {
+      return currentVideoId;
+    } else {
+      return false;
+    }
+  }
+
+  // parses videoId from the url returned by getVideoUrl function
+  function getVideoIdFromUrl(videoUrl) {
+    var videoId = videoUrl.split('v=')[1];
+    //Chrome and Firefox have different positions for parameters
+    var ampersandIndex = videoId.indexOf('&');
+    if (ampersandIndex != -1) {
+      videoId = videoId.substring(0, ampersandIndex);
+    }
+    return videoId;
+  }
+
+  function areTooFarApart(myTime, theirTime) {
+    var secDiff = Math.abs(myTime - theirTime);
+    var milliDiff = secDiff * 1000;
+    return milliDiff > TOO_FAR_APART;
+  }
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('templates-en-US',[], function () {
+  return {
+    "interface": "<% /*\n   This is basically all the markup and interface for TogetherJS.\n   Note all links should be like http://localhost:8080/togetherjs/*\n   these links are rewritten with the location where TogetherJS was deployed.\n\n   This file is inlined into togetherjs/templates.js\n*/ %>\n<div id=\"togetherjs-container\" class=\"togetherjs\">\n\n  <!-- This is the main set of buttons: -->\n  <div id=\"togetherjs-dock\" class=\"togetherjs-dock-right\">\n    <div id=\"togetherjs-dock-anchor\" title=\"Move the dock\">\n      <span id=\"togetherjs-dock-anchor-horizontal\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n      <span id=\"togetherjs-dock-anchor-vertical\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n    </div>\n    <div id=\"togetherjs-buttons\">\n      <div style=\"display: none\">\n        <button id=\"togetherjs-template-dock-person\" class=\"togetherjs-button togetherjs-dock-person\">\n          <div class=\"togetherjs-tooltip togetherjs-dock-person-tooltip\">\n            <span class=\"togetherjs-person-name\"></span>\n            <span class=\"togetherjs-person-tooltip-arrow-r\"></span>\n          </div>\n          <div class=\"togetherjs-person togetherjs-person-status-overlay\"></div>\n        </button>\n      </div>\n      <button id=\"togetherjs-profile-button\" class=\"togetherjs-button\" title=\"This is you\">\n        <div class=\"togetherjs-person togetherjs-person-self\"></div>\n        <div id=\"togetherjs-profile-arrow\"></div>\n      </button>\n      <button id=\"togetherjs-share-button\" class=\"togetherjs-button\" title=\"Add a friend\"></button>\n      <button id=\"togetherjs-audio-button\" class=\"togetherjs-button\" title=\"Turn on microphone\">\n        <span id=\"togetherjs-audio-unavailable\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\">\n        </span>\n        <span id=\"togetherjs-audio-ready\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-outgoing\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-incoming\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-active\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-muted\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-error\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n      </button>\n      <button id=\"togetherjs-chat-button\" class=\"togetherjs-button\" title=\"Chat\"></button>\n      <div id=\"togetherjs-dock-participants\"></div>\n    </div>\n  </div>\n\n  <!-- The window for editing the avatar: -->\n  <div id=\"togetherjs-avatar-edit\" class=\"togetherjs-modal\"\n       style=\"display: none\">\n    <header> Update avatar </header>\n    <section>\n      <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n      <div id=\"togetherjs-avatar-buttons\">\n        <input type=\"file\" class=\"togetherjs-upload-avatar\">\n        <!--<button id=\"togetherjs-upload-avatar\" class=\"togetherjs-primary\">Upload a picture</button>-->\n        <!--<button id=\"togetherjs-camera-avatar\" class=\"togetherjs-default\">Take a picture</button>-->\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Cancel</button>\n      <span class=\"togetherjs-alt-text\">or</span>\n      <button class=\"togetherjs-avatar-save togetherjs-primary\">Save</button>\n    </section>\n  </div>\n\n  <!-- The window for sharing the link: -->\n  <div id=\"togetherjs-share\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-share-button\" style=\"display: none\">\n    <header> Invite a friend </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <p>Copy and paste this link over IM or email:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n      </div>\n      <div class=\"togetherjs-only-mobile\">\n        <p>Copy and paste this link over IM or email:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n        <!-- <a class=\"togetherjs-share-link\" href=\"#\">Press your thumb here.</a> -->\n      </div>\n    </section>\n  </div>\n\n  <!-- Participant Full List view template: -->\n  <div id=\"togetherjs-participantlist\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-participantlist-button\" style=\"display: none\">\n    <header> Participants </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <ul>\n          <li id=\"togetherjs-participant-item\">\n            <img class=\"togetherjs-person togetherjs-person-small\" src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\">\n            <span class=\"tj-name togetherjs-person-name\">NAME</span>\n            <span class=\"tj-status\">&#9679;</span>\n            <p class=\"tj-urllocation\">Currently at: <a class=\"togetherjs-person-url togetherjs-person-url-title\" href=\"\">http://www.location.comwww.location.comwww.location.comasdfsafd</a></p>\n            <p class=\"tj-follow\">Follow:\n              <label class=\"togetherjs-follow-question\" for=\"togetherjs-person-status-follow\">\n                <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n              </label>\n            </p>\n            <section class=\"togetherjs-buttons\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url\">\n                <a class=\"togetherjs-nudge togetherjs-default tj-btn-sm\">Nudge them</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary tj-btn-sm\">Join them</a>\n              </div>\n              <!-- Displayed when the peer is at your same URL: -->\n              <div class=\"togetherjs-same-url\" style=\"display: none\">\n                <span class=\"togetherjs-person-name\"></span> is on the same page as you.\n              </div>\n            </section>\n          </li>\n        </ul>\n    </section>\n  </div>\n\n  <!-- Participant detail template: -->\n  <div id=\"togetherjs-template-participant-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header><div class=\"togetherjs-person togetherjs-person-small\"></div><span class=\"togetherjs-person-name\"></span></header>\n\n    <section class=\"togetherjs-participant-window-main\">\n      <p class=\"togetherjs-participant-window-row\"><strong>Role:</strong>\n        <span class=\"togetherjs-person-role\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Currently at:</strong>\n        <a class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Status:</strong>\n        <span class=\"togetherjs-person-status\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong class=\"togetherjs-float-left\">Follow this participant:</strong>\n        <label class=\"togetherjs-follow-question togetherjs-float-left\" for=\"togetherjs-person-status-follow\">\n          <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n        </label>\n        <span class=\"togetherjs-clear\"></span>\n      </p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <!-- Displayed when the peer is at a different URL: -->\n      <div class=\"togetherjs-different-url\">\n        <a class=\"togetherjs-nudge togetherjs-default\">Nudge them</a>\n        <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Join them</a>\n      </div>\n      <!-- Displayed when the peer is at your same URL: -->\n      <div class=\"togetherjs-same-url\" style=\"display: none\">\n        <span class=\"togetherjs-person-name\"></span> is on the same page as you.\n      </div>\n    </section>\n  </div>\n\n  <!-- The chat screen: -->\n  <div id=\"togetherjs-chat\" class=\"togetherjs-window\" data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <header> Chat </header>\n    <section class=\"togetherjs-subtitle\">\n      <div id=\"togetherjs-chat-participants\" data-toggles=\"#togetherjs-chat-no-participants\" style=\"display: none\">\n        <span id=\"togetherjs-chat-participant-list\"></span>\n        &amp; You\n      </div>\n      <!-- pgbovine - add a better default message\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        No one else is here.\n      </div>\n      -->\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        Invite someone to chat with URL at top of page\n      </div>\n\n    </section>\n\n    <div style=\"display: none\">\n\n      <!-- Template for one message: -->\n      <div id=\"togetherjs-template-chat-message\" class=\"togetherjs-chat-item togetherjs-chat-message\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-timestamp\"><span class=\"togetherjs-time\">HH:MM</span> <span class=\"togetherjs-ampm\">AM/PM</span></div>\n        <div class=\"togetherjs-person-name-abbrev\"></div>\n        <div class=\"togetherjs-chat-content togetherjs-sub-content\"></div>\n      </div>\n\n      <!-- Template for when a person leaves: -->\n      <div id=\"togetherjs-template-chat-left\" class=\"togetherjs-chat-item togetherjs-chat-left-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-ifnot-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> left the session.</div>\n        </div>\n        <div class=\"togetherjs-if-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> declined to join the session.</div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> joined the session.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template for system-derived messages: -->\n      <div id=\"togetherjs-template-chat-system\" class=\"togetherjs-chat-item\">\n        <span class=\"togetherjs-chat-content togetherjs-sub-content\"></span>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <!-- <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> joined the session.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div> -->\n\n      <!-- Template for when someone goes to a new URL: -->\n      <div id=\"togetherjs-template-url-change\" class=\"togetherjs-chat-item togetherjs-chat-url-change\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\">\n          <div class=\"togetherjs-if-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            is on the same page as you.\n          </div>\n          <div class=\"togetherjs-ifnot-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            has gone to: <a href=\"#\" class=\"togetherjs-person-url togetherjs-person-url-title\" target=\"_self\"></a>\n            <section class=\"togetherjs-buttons togetherjs-buttons-notification-diff-url\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url togetherjs-notification-diff-url\">\n                <a class=\"togetherjs-nudge togetherjs-default\">Nudge them</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Join them</a>\n              </div>\n            </section>\n\n            <!-- <div>\n              <a class=\"togetherjs-nudge togetherjs-secondary\">Nudge them</a>\n              <a href=\"\" class=\"togetherjs-person-url togetherjs-follow togetherjs-primary\">Join them</a>\n            </div> -->\n\n          </div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n    </div>\n\n    <section id=\"togetherjs-chat-messages\">\n      <!-- FIX ME// need to have some dialogue that says something like - There are no chats yet! -->\n    </section>\n    <section id=\"togetherjs-chat-input-box\">\n      <textarea id=\"togetherjs-chat-input\" placeholder=\"Type your message here\"></textarea>\n    </section>\n  </div>\n\n  <!-- this is a kind of warning popped up when you (successfully) start RTC: -->\n  <div id=\"togetherjs-rtc-info\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n\n    <header> Audio Chat </header>\n    <section>\n      <p>\n        Activate your <strong>browser microphone</strong> near your URL bar above.\n      </p>\n      <p>\n        Talking on your microphone through your web browser is an experimental feature.\n      </p>\n      <p>\n        Read more about Audio Chat <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <label for=\"togetherjs-rtc-info-dismiss\" style=\"display: inline;\">\n        <input class=\"togetherjs-dont-show-again\" id=\"togetherjs-rtc-info-dismiss\" type=\"checkbox\">\n        Don't show again.\n      </label>\n      <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Close</button>\n    </section>\n  </div>\n\n  <!-- this is popped up when you hit the audio button, but RTC isn't\n  supported: -->\n  <div id=\"togetherjs-rtc-not-supported\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n    <header> Audio Chat </header>\n\n    <section>\n      <p>Audio chat requires you to use a <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>newer browser</a>!</p>\n      <p>\n        Live audio chat requires a newer (or different) browser than you're using.\n      </p>\n      <p>\n        See <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>this page</a>for more information and a list of supported browsers.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <div class=\"togetherjs-rtc-dialog-btn\">\n        <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Close</button>\n      </div>\n    </section>\n  </div>\n\n  <!-- The popup when a chat message comes in and the #togetherjs-chat window isn't open -->\n  <div id=\"togetherjs-chat-notifier\" class=\"togetherjs-notification\"\n       data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-togetherjs-logo.png\" class=\"togetherjs-notification-logo\" alt=\"\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-btn-close.png\" class=\"togetherjs-notification-closebtn togetherjs-dismiss\" alt=\"[close]\">\n    <section id=\"togetherjs-chat-notifier-message\">\n    </section>\n  </div>\n\n  <!-- The menu when you click on the profile: -->\n  <div id=\"togetherjs-menu\" class=\"togetherjs-menu\" style=\"display: none\">\n    <div class=\"togetherjs-menu-item togetherjs-menu-disabled\" id=\"togetherjs-menu-profile\">\n      <img id=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\" data-toggles=\"#togetherjs-menu .togetherjs-self-name\">[nickname]</span>\n      <input class=\"togetherjs-self-name\" type=\"text\" data-toggles=\"#togetherjs-self-name-display\" style=\"display: none\" placeholder=\"Enter your name\">\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Update your name</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Change avatar</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color\"><span class=\"togetherjs-person-bgcolor-self\"></span> Pick profile color</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help\">Help</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback\">Feedback</div>\n    <div id=\"togetherjs-invite\" style=\"display: none\">\n      <div class=\"togetherjs-hr\"></div>\n      <div id=\"togetherjs-invite-users\"></div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-refresh-invite\">Refresh users</div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-invite-anyone\">Invite anyone</div>\n    </div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> End <span class=\"togetherjs-tool-name\">TogetherJS</span></div>\n  </div>\n\n  <!-- template for one person in the invite-users list -->\n  <div style=\"display: none\">\n    <div id=\"togetherjs-template-invite-user-item\" class=\"togetherjs-menu-item\">\n      <!-- FIXME: should include avatar in some way -->\n      <span class=\"togetherjs-person-name\"></span>\n    </div>\n  </div>\n\n  <!-- A window version of #togetherjs-menu, for use on mobile -->\n  <div id=\"togetherjs-menu-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Settings and Profile</header>\n    <section>\n    <div class=\"togetherjs-menu-item\">\n      <img class=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\"></span>\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name-button\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Update your name</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar-button\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Change avatar</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color-button\"><span class=\"togetherjs-person-bgcolor-self\"></span> Pick profile color</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help-button\">Help</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback-button\">Feedback</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end-button\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> End TOOL_NAME</div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">OK</button>\n    </section>\n  </div>\n\n  <!-- The name editor, for use on mobile -->\n  <div id=\"togetherjs-edit-name-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Update Name</header>\n    <section>\n      <div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Enter your name\">\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">OK</button>\n    </section>\n  </div>\n\n  <div class=\"togetherjs-menu\" id=\"togetherjs-pick-color\" style=\"display: none\">\n    <div class=\"togetherjs-triangle-up\"><img src=\"http://localhost:8080/togetherjs/images/icn-triangle-up.png\"></div>\n    <div style=\"display: none\">\n      <div id=\"togetherjs-template-swatch\" class=\"togetherjs-swatch\">\n      </div>\n    </div>\n  </div>\n\n  <!-- Invisible elements that handle the RTC audio: -->\n  <audio id=\"togetherjs-audio-element\"></audio>\n  <audio id=\"togetherjs-local-audio\" muted=\"true\" volume=\"0.3\"></audio>\n  <audio id=\"togetherjs-notification\" src=\"http://localhost:8080/togetherjs/images/notification.ogg\"></audio>\n\n  <!-- The intro screen for someone who joins a session the first time: -->\n  <div id=\"togetherjs-intro\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header>Join TOOL_NAME session?</header>\n    <section>\n      <p>Your friend has asked you to join their TOOL_SITE_LINK browser session to collaborate in real-time!</p>\n      <p>Would you like to join their session?</p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-destructive togetherjs-modal-dont-join\">No, don't join</button>\n      <button class=\"togetherjs-primary togetherjs-dismiss\">Yes, join session</button>\n    </section>\n  </div>\n\n  <!-- Shown when a web browser is completely incapable of running TogetherJS: -->\n  <div id=\"togetherjs-browser-broken\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Sorry </header>\n\n    <section>\n      <p>\n        We're sorry, TOOL_NAME doesn't work with this browser.  Please <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>upgrade to a supported browser</a> to try TOOL_NAME.\n      </p>\n\n      <p id=\"togetherjs-browser-broken-is-ie\" style=\"display: none\">\n        We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">End TOOL_NAME</button>\n    </section>\n\n  </div>\n\n  <!-- Shown when the browser has WebSockets, but is IE (i.e., IE10) -->\n  <div id=\"togetherjs-browser-unsupported\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Unsupported Browser </header>\n\n    <section>\n      <p>\n        We need your help fixing TogetherJS on Internet Explorer!  Here are a list of IE <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">GitHub issues</a> we need fixed that you can work on.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\">is currently not supported</a>.  If you do want to try out TogetherJS, we'd suggest using Firefox or Chrome.\n      </p>\n\n      <p>You can continue to try to use TOOL_NAME, but you are likely to hit lots of bugs.  So be warned.</p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">End TOOL_NAME</button>\n      <button class=\"togetherjs-dismiss togetherjs-secondary togetherjs-browser-unsupported-anyway\">Try TOOL_NAME Anyway</button>\n    </section>\n\n  </div>\n\n  <div id=\"togetherjs-confirm-end\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> End session? </header>\n    <section>\n      <p>\n        Are you sure you'd like to end your TOOL_NAME session?\n      </p>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Cancel</button>\n      <span class=\"togetherjs-alt-text\">or</span>\n      <button id=\"togetherjs-end-session\" class=\"togetherjs-destructive\">End session</button>\n    </section>\n  </div>\n\n  <div id=\"togetherjs-feedback-form\" class=\"togetherjs-modal\" style=\"display: none;\">\n    <header> Feedback </header>\n    <iframe src=\"https://docs.google.com/a/mozilla.com/forms/d/1lVE7JyRo_tjakN0mLG1Cd9X9vseBX9wci153z9JcNEs/viewform?embedded=true\" width=\"400\" height=\"300\" frameborder=\"0\" marginheight=\"0\" marginwidth=\"0\">Loading form...</iframe>\n    <!-- <p><button class=\"togetherjs-modal-close\">Close</button></p> -->\n  </div>\n\n  <div style=\"display: none\">\n    <!-- This is when you join a session and the other person has already changed to another URL: -->\n    <div id=\"togetherjs-template-url-change\" class=\"togetherjs-modal\">\n      <header> Following to new URL... </header>\n      <section>\n        <div class=\"togetherjs-person\"></div>\n        Following\n        <span class=\"togetherjs-person-name\"></span>\n        to <a href=\"\" class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </section>\n    </div>\n\n    <!-- This is when someone invites you to their session: -->\n    <div id=\"togetherjs-template-invite\" class=\"togetherjs-chat-item\">\n      <div class=\"togetherjs-person\"></div>\n      <div>\n        <span class=\"togetherjs-person-name\"></span>\n        has invited <strong class=\"togetherjs-if-forEveryone\">anyone</strong>\n        <strong class=\"togetherjs-ifnot-forEveryone\">you</strong>\n        to <a href=\"\" data-togetherjs-subattr-href=\"href\" class=\"togetherjs-sub-hrefTitle\" target=\"_blank\"></a>\n      </div>\n    </div>\n\n  </div>\n\n  <!-- The pointer at the side of a window: -->\n  <div id=\"togetherjs-window-pointer-right\" style=\"display: none\"></div>\n  <div id=\"togetherjs-window-pointer-left\" style=\"display: none\"></div>\n\n  <!-- The element that overlaps the background of the page during a modal dialog: -->\n  <div id=\"togetherjs-modal-background\" style=\"display: none\"></div>\n\n  <!-- Some miscellaneous templates -->\n  <div style=\"display: none\">\n\n    <!-- This is the cursor: -->\n    <div id=\"togetherjs-template-cursor\" class=\"togetherjs-cursor togetherjs\">\n      <!-- Note: images/cursor.svg is a copy of this (for editing): -->\n      <!-- crossbrowser svg dropshadow http://demosthenes.info/blog/600/Creating-a-True-CrossBrowser-Drop-Shadow- -->\n      <svg version=\"1.1\" id=\"Layer_1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" x=\"0px\" y=\"0px\"\n      \t width=\"15px\" height=\"22.838px\" viewBox=\"96.344 146.692 15 22.838\" enable-background=\"new 96.344 146.692 15 22.838\"\n      \t xml:space=\"preserve\">\n      <path fill=\"#231F20\" d=\"M98.984,146.692c2.167,1.322,1.624,6.067,3.773,7.298c-0.072-0.488,2.512-0.931,3.097,0\n      \tc0.503,0.337,1.104-0.846,2.653,0.443c0.555,0.593,3.258,2.179,1.001,8.851c-0.446,1.316,2.854,0.135,1.169,2.619\n      \tc-3.748,5.521-9.455,2.787-9.062,1.746c1.06-2.809-6.889-4.885-4.97-9.896c0.834-2.559,2.898,0.653,2.923,0.29\n      \tc-0.434-1.07-2.608-5.541-2.923-6.985C96.587,150.793,95.342,147.033,98.984,146.692z\"/>\n      </svg>\n      <!-- <img class=\"togetherjs-cursor-img\" src=\"http://localhost:8080/togetherjs/images/cursor.svg\"> -->\n      <span class=\"togetherjs-cursor-container\">\n        <span class=\"togetherjs-cursor-name\"></span>\n        <span style=\"display:none\" class=\"togetherjs-cursor-typing\" id=\"togetherjs-cursor-typebox\">\n          <span class=\"togetherjs-typing-ellipse-one\">&#9679;</span><span class=\"togetherjs-typing-ellipse-two\">&#9679;</span><span class=\"togetherjs-typing-ellipse-three\">&#9679;</span>\n        </span>\n        <!-- Displayed when the cursor is below the screen: -->\n        <span class=\"togetherjs-cursor-down\">\n\n        </span>\n        <!-- Displayed when the cursor is above the screen: -->\n        <span class=\"togetherjs-cursor-up\">\n\n        </span>\n      </span>\n    </div>\n\n    <!-- This is the element that goes around focused form elements: -->\n    <div id=\"togetherjs-template-focus\">\n      <div class=\"togetherjs-focus togetherjs-person-bordercolor\"></div>\n    </div>\n\n    <!-- This is a click: -->\n    <div id=\"togetherjs-template-click\" class=\"togetherjs-click togetherjs\">\n    </div>\n  </div>\n</div>\n",
+    walkthrough: "<!--\n    Any elements with .togetherjs-walkthrough-firsttime will only be\n    displayed on during the first-time experience.  Any elements with\n    .togetherjs-walkthrough-not-firsttime will only be displayed when\n    the walkthrough is accessed through the Help menu.\n\n    Note you *cannot* use <section class=\"togetherjs-walkthrough-slide\n    togetherjs-walkthrough-firsttime\">: the number of sections must be the\n    same regardless.\n  -->\n<div id=\"togetherjs-walkthrough\" class=\"togetherjs-modal togetherjs-modal-wide\">\n  <header>You're using TOOL_NAME!<button class=\"togetherjs-close\"></button></header>\n\n  <div id=\"togetherjs-walkthrough-previous\"></div>\n  <div id=\"togetherjs-walkthrough-next\"></div>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-intro.png\"></p>\n\t<p>TOOL_NAME is a service for your website that makes it easy to collaborate in real-time on SITE_NAME </p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <div class=\"togetherjs-walkthrough-firsttime\">\n      <div class=\"togetherjs-walkthrough-main-image\">\n        <div class=\"togetherjs-walkthrough-avatar-section\">\n          <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n          <div class=\"togetherjs-avatar-upload-input\"><input type=\"file\" class=\"togetherjs-upload-avatar\"></div>\n        </div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Enter your name\">\n        <div class=\"togetherjs-swatch togetherjs-person-bgcolor-self\"></div>\n        <div class=\"togetherjs-save-settings\">\n          <button class=\"togetherjs-avatar-save togetherjs-primary\">\n            <span id=\"togetherjs-avatar-when-unsaved\">\"\"Save\"\"</span>\n            <span id=\"togetherjs-avatar-when-saved\" style=\"display: none\">Saved!</span>\n          </button>\n        </div>\n      </div>\n      <p>Set up your avatar, name and user color above.  If you'd like to update it later, you can click your Profile button.</p>\n    </div>\n    <div class=\"togetherjs-walkthrough-not-firsttime\">\n      <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-profile.png\"></p>\n      <p>Change your avatar, name and user color using the Profile button.</p>\n    </div>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-ifnot-creator\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-invite.png\">\n    </p>\n    <p class=\"togetherjs-ifnot-creator\">You can invite more friends to the session by sending the invite link in the TOOL_NAME dock.</p>\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-if-creator\">\n      <span class=\"togetherjs-walkthrough-sendlink\">\n        Copy and paste this link into IM or email to invite friends.\n      </span>\n      <input type=\"text\" class=\"togetherjs-share-link\">\n    </p>\n    <p class=\"togetherjs-if-creator\">Send the above link to a friend so they can join your session!  You can find this invite link on the TOOL_NAME dock as well.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-participant.png\"></p>\n    <p>Friends who join your TOOL_NAME session will appear here.  You can click their avatars to see more.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-chat.png\"></p>\n    <p>When your friends join you in your TOOL_NAME session, you can chat with them here!</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-rtc.png\"></p>\n    <p>If your browser supports it, click the microphone icon to begin a audio chat. Learn more about this experimental feature <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-logo.png\"></p>\n    <p>Alright, you're ready to use TOOL_NAME. Now start collaborating on SITE_NAME!</p>\n  </section>\n\n  <div style=\"display: none\">\n    <!-- There is one of these created for each slide: -->\n    <span id=\"togetherjs-template-walkthrough-slide-progress\" class=\"togetherjs-walkthrough-slide-progress\">&#9679;</span>\n  </div>\n  <section id=\"togetherjs-walkthrough-progress\">\n  </section>\n\n  <section class=\"togetherjs-buttons\">\n    <button class=\"togetherjs-primary togetherjs-dismiss\">I'm ready!</button>\n  </section>\n\n</div><!-- /.togetherjs-modal -->\n",
+    names: "Friendly Fox, Brilliant Beaver, Observant Owl, Gregarious Giraffe, Wild Wolf, Silent Seal, Wacky Whale, Curious Cat, Intelligent Iguana"
+  };
+});
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define('templates-ru',[], function () {
+  return {
+    "interface": "<% /*\n   This is basically all the markup and interface for TogetherJS.\n   Note all links should be like http://localhost:8080/togetherjs/*\n   these links are rewritten with the location where TogetherJS was deployed.\n\n   This file is inlined into togetherjs/templates.js\n*/ %>\n<div id=\"togetherjs-container\" class=\"togetherjs\">\n\n  <!-- This is the main set of buttons: -->\n  <div id=\"togetherjs-dock\" class=\"togetherjs-dock-right\">\n    <div id=\"togetherjs-dock-anchor\" title=\"Передвинуть панель\">\n      <span id=\"togetherjs-dock-anchor-horizontal\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n      <span id=\"togetherjs-dock-anchor-vertical\">\n        <img src=\"http://localhost:8080/togetherjs/images/icn-handle-circle@2x.png\" alt=\"drag\">\n      </span>\n    </div>\n    <div id=\"togetherjs-buttons\">\n      <div style=\"display: none\">\n        <button id=\"togetherjs-template-dock-person\" class=\"togetherjs-button togetherjs-dock-person\">\n          <div class=\"togetherjs-tooltip togetherjs-dock-person-tooltip\">\n            <span class=\"togetherjs-person-name\"></span>\n            <span class=\"togetherjs-person-tooltip-arrow-r\"></span>\n          </div>\n          <div class=\"togetherjs-person togetherjs-person-status-overlay\"></div>\n        </button>\n      </div>\n      <button id=\"togetherjs-profile-button\" class=\"togetherjs-button\" title=\"Это Вы\">\n        <div class=\"togetherjs-person togetherjs-person-self\"></div>\n        <div id=\"togetherjs-profile-arrow\"></div>\n      </button>\n      <button id=\"togetherjs-share-button\" class=\"togetherjs-button\" title=\"Добавить друга\"></button>\n      <button id=\"togetherjs-audio-button\" class=\"togetherjs-button\" title=\"Включить микрофон\">\n        <span id=\"togetherjs-audio-unavailable\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\">\n        </span>\n        <span id=\"togetherjs-audio-ready\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-outgoing\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-incoming\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-active\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-muted\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n        <span id=\"togetherjs-audio-error\" class=\"togetherjs-audio-set\" data-toggles=\".togetherjs-audio-set\" style=\"display: none\">\n        </span>\n      </button>\n      <button id=\"togetherjs-chat-button\" class=\"togetherjs-button\" title=\"Чат\"></button>\n      <div id=\"togetherjs-dock-participants\"></div>\n    </div>\n  </div>\n\n  <!-- The window for editing the avatar: -->\n  <div id=\"togetherjs-avatar-edit\" class=\"togetherjs-modal\"\n       style=\"display: none\">\n    <header> Обновить аватар </header>\n    <section>\n      <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n      <div id=\"togetherjs-avatar-buttons\">\n        <input type=\"file\" class=\"togetherjs-upload-avatar\">\n        <!--<button id=\"togetherjs-upload-avatar\" class=\"togetherjs-primary\">Upload a picture</button>-->\n        <!--<button id=\"togetherjs-camera-avatar\" class=\"togetherjs-default\">Take a picture</button>-->\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Отмена</button>\n      <span class=\"togetherjs-alt-text\">или</span>\n      <button class=\"togetherjs-avatar-save togetherjs-primary\">Сохранить</button>\n    </section>\n  </div>\n\n  <!-- The window for sharing the link: -->\n  <div id=\"togetherjs-share\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-share-button\" style=\"display: none\">\n    <header> Пригласить друга </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <p>Скопируйте эту ссылку и приклейте её в IM или в имейл:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n      </div>\n      <div class=\"togetherjs-only-mobile\">\n        <p>Скопируйте эту ссылку и приклейте её в IM или в имейл:</p>\n        <input type=\"text\" class=\"togetherjs-share-link\">\n        <!-- <a class=\"togetherjs-share-link\" href=\"#\">Press your thumb here.</a> -->\n      </div>\n    </section>\n  </div>\n\n  <!-- Participant Full List view template: -->\n  <div id=\"togetherjs-participantlist\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-participantlist-button\" style=\"display: none\">\n    <header> Участники </header>\n    <section>\n      <div class=\"togetherjs-not-mobile\">\n        <ul>\n          <li id=\"togetherjs-participant-item\">\n            <img class=\"togetherjs-person togetherjs-person-small\" src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\">\n            <span class=\"tj-name togetherjs-person-name\">NAME</span>\n            <span class=\"tj-status\">&#9679;</span>\n            <p class=\"tj-urllocation\">Сейчас на: <a class=\"togetherjs-person-url togetherjs-person-url-title\" href=\"\">http://www.location.comwww.location.comwww.location.comasdfsafd</a></p>\n            <p class=\"tj-follow\">Последовать:\n              <label class=\"togetherjs-follow-question\" for=\"togetherjs-person-status-follow\">\n                <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n              </label>\n            </p>\n            <section class=\"togetherjs-buttons\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url\">\n                <a class=\"togetherjs-nudge togetherjs-default tj-btn-sm\">Толкнуть друга</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary tj-btn-sm\">Присоединиться к нему</a>\n              </div>\n              <!-- Displayed when the peer is at your same URL: -->\n              <div class=\"togetherjs-same-url\" style=\"display: none\">\n                <span class=\"togetherjs-person-name\"></span> с Вами на одной странице.\n              </div>\n            </section>\n          </li>\n        </ul>\n    </section>\n  </div>\n\n  <!-- Participant detail template: -->\n  <div id=\"togetherjs-template-participant-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header><div class=\"togetherjs-person togetherjs-person-small\"></div><span class=\"togetherjs-person-name\"></span></header>\n\n    <section class=\"togetherjs-participant-window-main\">\n      <p class=\"togetherjs-participant-window-row\"><strong>Роль:</strong>\n        <span class=\"togetherjs-person-role\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Сейчас на:</strong>\n        <a class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong>Статус:</strong>\n        <span class=\"togetherjs-person-status\"></span>\n      </p>\n\n      <p class=\"togetherjs-participant-window-row\"><strong class=\"togetherjs-float-left\">Следовать за этим участником:</strong>\n        <label class=\"togetherjs-follow-question togetherjs-float-left\" for=\"togetherjs-person-status-follow\">\n          <input type=\"checkbox\" id=\"togetherjs-person-status-follow\">\n        </label>\n        <span class=\"togetherjs-clear\"></span>\n      </p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <!-- Displayed when the peer is at a different URL: -->\n      <div class=\"togetherjs-different-url\">\n        <a class=\"togetherjs-nudge togetherjs-default\">Толкнуть друга</a>\n        <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Присоединиться к нему</a>\n      </div>\n      <!-- Displayed when the peer is at your same URL: -->\n      <div class=\"togetherjs-same-url\" style=\"display: none\">\n        <span class=\"togetherjs-person-name\"></span> с Вами на одной странице.\n      </div>\n    </section>\n  </div>\n\n  <!-- The chat screen: -->\n  <div id=\"togetherjs-chat\" class=\"togetherjs-window\" data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <header> Чат </header>\n    <section class=\"togetherjs-subtitle\">\n      <div id=\"togetherjs-chat-participants\" data-toggles=\"#togetherjs-chat-no-participants\" style=\"display: none\">\n        <span id=\"togetherjs-chat-participant-list\"></span>\n        &amp; Вы\n      </div>\n      <!-- pgbovine - add a better default message\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        Здесь больше никого нет.\n      </div>\n      -->\n      <div id=\"togetherjs-chat-no-participants\" data-toggles=\"#togetherjs-chat-participants\">\n        Nobody is here yet. Please wait ...\n      </div>\n\n    </section>\n\n    <div style=\"display: none\">\n\n      <!-- Template for one message: -->\n      <div id=\"togetherjs-template-chat-message\" class=\"togetherjs-chat-item togetherjs-chat-message\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-timestamp\"><span class=\"togetherjs-time\">HH:MM</span> <span class=\"togetherjs-ampm\">AM/PM</span></div>\n        <div class=\"togetherjs-person-name-abbrev\"></div>\n        <div class=\"togetherjs-chat-content togetherjs-sub-content\"></div>\n      </div>\n\n      <!-- Template for when a person leaves: -->\n      <div id=\"togetherjs-template-chat-left\" class=\"togetherjs-chat-item togetherjs-chat-left-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-ifnot-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> покинул сеанс.</div>\n        </div>\n        <div class=\"togetherjs-if-declinedJoin\">\n          <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> отказался присоединиться к сеансу.</div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> присоединился к сеансу.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n\n      <!-- Template for system-derived messages: -->\n      <div id=\"togetherjs-template-chat-system\" class=\"togetherjs-chat-item\">\n        <span class=\"togetherjs-chat-content togetherjs-sub-content\"></span>\n      </div>\n\n      <!-- Template when a person joins the session: -->\n      <!-- <div id=\"togetherjs-template-chat-joined\" class=\"togetherjs-chat-item togetherjs-chat-join-item\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\"><span class=\"togetherjs-person-name\"></span> joined the session.</div>\n        <div class=\"togetherjs-clear\"></div>\n      </div> -->\n\n      <!-- Template for when someone goes to a new URL: -->\n      <div id=\"togetherjs-template-url-change\" class=\"togetherjs-chat-item togetherjs-chat-url-change\">\n        <div class=\"togetherjs-person\"></div>\n        <div class=\"togetherjs-inline-text\">\n          <div class=\"togetherjs-if-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            с Вами на одной странице.\n          </div>\n          <div class=\"togetherjs-ifnot-sameUrl\">\n            <span class=\"togetherjs-person-name\"></span>\n            отправился на: <a href=\"#\" class=\"togetherjs-person-url togetherjs-person-url-title\" target=\"_self\"></a>\n            <section class=\"togetherjs-buttons togetherjs-buttons-notification-diff-url\">\n              <!-- Displayed when the peer is at a different URL: -->\n              <div class=\"togetherjs-different-url togetherjs-notification-diff-url\">\n                <a class=\"togetherjs-nudge togetherjs-default\">Толкнуть друга</a>\n                <a href=\"#\" class=\"togetherjs-follow togetherjs-person-url togetherjs-primary\">Присоединиться к нему</a>\n              </div>\n            </section>\n\n            <!-- <div>\n              <a class=\"togetherjs-nudge togetherjs-secondary\">Nudge them</a>\n              <a href=\"\" class=\"togetherjs-person-url togetherjs-follow togetherjs-primary\">Join them</a>\n            </div> -->\n\n          </div>\n        </div>\n        <div class=\"togetherjs-clear\"></div>\n      </div>\n    </div>\n\n    <section id=\"togetherjs-chat-messages\">\n      <!-- FIX ME// need to have some dialogue that says something like - There are no chats yet! -->\n    </section>\n    <section id=\"togetherjs-chat-input-box\">\n      <textarea id=\"togetherjs-chat-input\" placeholder=\"Напечатайте своё сообщение здесь\"></textarea>\n    </section>\n  </div>\n\n  <!-- this is a kind of warning popped up when you (successfully) start RTC: -->\n  <div id=\"togetherjs-rtc-info\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n\n    <header> Аудио-чат </header>\n    <section>\n      <p>\n        Включите <strong>микрофон браузера</strong> возле адресной строки вверху.\n      </p>\n      <p>\n        Разговор по микрофону через веб-браузер - экспериментальное свойство.\n      </p>\n      <p>\n        Почитайте больше об аудио-чате <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">здесь</a>.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <label for=\"togetherjs-rtc-info-dismiss\" style=\"display: inline;\">\n        <input class=\"togetherjs-dont-show-again\" id=\"togetherjs-rtc-info-dismiss\" type=\"checkbox\">\n        Больше не показывать.\n      </label>\n      <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Закрыть</button>\n    </section>\n  </div>\n\n  <!-- this is popped up when you hit the audio button, but RTC isn't\n  supported: -->\n  <div id=\"togetherjs-rtc-not-supported\" class=\"togetherjs-window\"\n       data-bind-to=\"#togetherjs-audio-button\"\n       style=\"display: none\">\n    <header> Аудио-чат </header>\n\n    <section>\n      <p>Аудио-чат требует, чтобы Вы использовали<a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>браузер поновее</a>!</p>\n      <p>\n        Для живого аудио-чата требуется более новый (или другой) браузер, чем тот, который Вы используете.\n      </p>\n      <p>\n        Посмотрите на <a href='https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC' target='_blank'>'этой странице'</a> дополнительную информацию и список поддерживаемых браузеров.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <div class=\"togetherjs-rtc-dialog-btn\">\n        <button class=\"togetherjs-default togetherjs-dismiss\" type=\"button\">Закрыть</button>\n      </div>\n    </section>\n  </div>\n\n  <!-- The popup when a chat message comes in and the #togetherjs-chat window isn't open -->\n  <div id=\"togetherjs-chat-notifier\" class=\"togetherjs-notification\"\n       data-bind-to=\"#togetherjs-chat-button\"\n       style=\"display: none\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-togetherjs-logo.png\" class=\"togetherjs-notification-logo\" alt=\"\">\n    <img src=\"http://localhost:8080/togetherjs/images/notification-btn-close.png\" class=\"togetherjs-notification-closebtn togetherjs-dismiss\" alt=\"[close]\">\n    <section id=\"togetherjs-chat-notifier-message\">\n    </section>\n  </div>\n\n  <!-- The menu when you click on the profile: -->\n  <div id=\"togetherjs-menu\" class=\"togetherjs-menu\" style=\"display: none\">\n    <div class=\"togetherjs-menu-item togetherjs-menu-disabled\" id=\"togetherjs-menu-profile\">\n      <img id=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\" data-toggles=\"#togetherjs-menu .togetherjs-self-name\">[nickname]</span>\n      <input class=\"togetherjs-self-name\" type=\"text\" data-toggles=\"#togetherjs-self-name-display\" style=\"display: none\" placeholder=\"Введите своё имя\">\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Обновить своё имя</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Изменить аватар</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color\"><span class=\"togetherjs-person-bgcolor-self\"></span> Выбрать цвет профиля</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help\">Помощь</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback\">Отзывы и предложения</div>\n    <div id=\"togetherjs-invite\" style=\"display: none\">\n      <div class=\"togetherjs-hr\"></div>\n      <div id=\"togetherjs-invite-users\"></div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-refresh-invite\">Refresh users</div>\n      <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-invite-anyone\">Пригласить кого-нибудь</div>\n    </div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> Закончить <span class=\"togetherjs-tool-name\">TogetherJS</span></div>\n  </div>\n\n  <!-- template for one person in the invite-users list -->\n  <div style=\"display: none\">\n    <div id=\"togetherjs-template-invite-user-item\" class=\"togetherjs-menu-item\">\n      <!-- FIXME: should include avatar in some way -->\n      <span class=\"togetherjs-person-name\"></span>\n    </div>\n  </div>\n\n  <!-- A window version of #togetherjs-menu, for use on mobile -->\n  <div id=\"togetherjs-menu-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Установки и профиль</header>\n    <section>\n    <div class=\"togetherjs-menu-item\">\n      <img class=\"togetherjs-menu-avatar\">\n      <span class=\"togetherjs-person-name-self\" id=\"togetherjs-self-name-display\"></span>\n    </div>\n    <div class=\"togetherjs-menu-hr-avatar\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-name-button\"><img src=\"http://localhost:8080/togetherjs/images/button-pencil.png\" alt=\"\"> Обновить своё имя</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-avatar-button\"><img src=\"http://localhost:8080/togetherjs/images/btn-menu-change-avatar.png\" alt=\"\"> Изменить аватар</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-update-color-button\"><span class=\"togetherjs-person-bgcolor-self\"></span> Выбрать цвет профиля</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-help-button\">Помощь</div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-feedback-button\">Отзывы и предложения</div>\n    <div class=\"togetherjs-hr\"></div>\n    <div class=\"togetherjs-menu-item\" id=\"togetherjs-menu-end-button\"><img src=\"http://localhost:8080/togetherjs/images/button-end-session.png\" alt=\"\"> Закончить TOOL_NAME</div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Хорошо</button>\n    </section>\n  </div>\n\n  <!-- The name editor, for use on mobile -->\n  <div id=\"togetherjs-edit-name-window\" class=\"togetherjs-window\" style=\"display: none\">\n    <header>Обновить имя</header>\n    <section>\n      <div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Введите своё имя\">\n      </div>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Хорошо</button>\n    </section>\n  </div>\n\n  <div class=\"togetherjs-menu\" id=\"togetherjs-pick-color\" style=\"display: none\">\n    <div class=\"togetherjs-triangle-up\"><img src=\"http://localhost:8080/togetherjs/images/icn-triangle-up.png\"></div>\n    <div style=\"display: none\">\n      <div id=\"togetherjs-template-swatch\" class=\"togetherjs-swatch\">\n      </div>\n    </div>\n  </div>\n\n  <!-- Invisible elements that handle the RTC audio: -->\n  <audio id=\"togetherjs-audio-element\"></audio>\n  <audio id=\"togetherjs-local-audio\" muted=\"true\" volume=\"0.3\"></audio>\n  <audio id=\"togetherjs-notification\" src=\"http://localhost:8080/togetherjs/images/notification.ogg\"></audio>\n\n  <!-- The intro screen for someone who joins a session the first time: -->\n  <div id=\"togetherjs-intro\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header>Присоединиться к сеансу TOOL_NAME?</header>\n    <section>\n      <p>Ваш друг просит Вас присоединиться к его TOOL_SITE_LINK браузер-сеансу, чтобы сотрудничать с Вами в реальном времени!</p>\n      <p>Хотели бы Вы присоединиться к его сеансу?</p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-destructive togetherjs-modal-dont-join\">Нет, не присоединяться</button>\n      <button class=\"togetherjs-primary togetherjs-dismiss\">Да, присоединиться к сеансу</button>\n    </section>\n  </div>\n\n  <!-- Shown when a web browser is completely incapable of running TogetherJS: -->\n  <div id=\"togetherjs-browser-broken\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Извините </header>\n\n    <section>\n      <p>\n        Извините, TOOL_NAME не работает на этом браузере. Просьба <a href='https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#supported-browsers'>обновиться до поддерживаемого браузера</a>, чтобы попробовать TOOL_NAME.\n      </p>\n\n      <p id=\"togetherjs-browser-broken-is-ie\" style=\"display: none\">\n        Нам нужна Ваша помощь в починке TogetherJS на Internet Explorer!  Вот список <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">ошибок на GitHub</a>, которые нам нужно починить, и над которыми Вы можете поработать.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\"> в настоящее время не поддерживается</a>.  Если Вы действительно хотите испытать TogetherJS, советуем Вам использовать Firefox или Chrome.\n      </p>\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Закончить TOOL_NAME</button>\n    </section>\n\n  </div>\n\n  <!-- Shown when the browser has WebSockets, but is IE (i.e., IE10) -->\n  <div id=\"togetherjs-browser-unsupported\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Браузер не поддерживается </header>\n\n    <section>\n      <p>\n        Нам нужна Ваша помощь в починке TogetherJS на Internet Explorer!  Вот список <a href=\"https://github.com/mozilla/togetherjs/issues?labels=IE&milestone=&page=1&state=open\" target=\"_blank\">ошибок на GitHub</a>, которые нам нужно починить, и над которыми Вы можете поработать.\n        Internet Explorer <a href=\"https://github.com/mozilla/togetherjs/wiki/Supported-Browsers#internet-explorer\"> в настоящее время не поддерживается</a>.  Если Вы действительно хотите испытать TogetherJS, советуем Вам использовать Firefox или Chrome.\n      </p>\n\n      <p>Вы можете продолжать пробовать использовать TOOL_NAME, но скорее всего Вы получите массу ошибок. Мы Вас предупредили.</p>\n\n    </section>\n\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-dismiss togetherjs-primary\">Закончить TOOL_NAME</button>\n      <button class=\"togetherjs-dismiss togetherjs-secondary togetherjs-browser-unsupported-anyway\">Всё равно попробовать TOOL_NAME</button>\n    </section>\n\n  </div>\n\n  <div id=\"togetherjs-confirm-end\" class=\"togetherjs-modal\" style=\"display: none\">\n    <header> Закончить сеанс? </header>\n    <section>\n      <p>\n        Вы уверены, что хотите завершить свой сеанс TOOL_NAME?\n      </p>\n    </section>\n    <section class=\"togetherjs-buttons\">\n      <button class=\"togetherjs-cancel togetherjs-dismiss\">Отмена</button>\n      <span class=\"togetherjs-alt-text\">или</span>\n      <button id=\"togetherjs-end-session\" class=\"togetherjs-destructive\">Закончить сеанс</button>\n    </section>\n  </div>\n\n  <div id=\"togetherjs-feedback-form\" class=\"togetherjs-modal\" style=\"display: none;\">\n    <header> Отзывы и предложения </header>\n    <iframe src=\"https://docs.google.com/a/mozilla.com/forms/d/1lVE7JyRo_tjakN0mLG1Cd9X9vseBX9wci153z9JcNEs/viewform?embedded=true\" width=\"400\" height=\"300\" frameborder=\"0\" marginheight=\"0\" marginwidth=\"0\">Загружаю форму ...</iframe>\n    <!-- <p><button class=\"togetherjs-modal-close\">Close</button></p> -->\n  </div>\n\n  <div style=\"display: none\">\n    <!-- This is when you join a session and the other person has already changed to another URL: -->\n    <div id=\"togetherjs-template-url-change\" class=\"togetherjs-modal\">\n      <header> Следую на новый URL... </header>\n      <section>\n        <div class=\"togetherjs-person\"></div>\n        Следую\n        <span class=\"togetherjs-person-name\"></span>\n        на <a href=\"\" class=\"togetherjs-person-url togetherjs-person-url-title\"></a>\n      </section>\n    </div>\n\n    <!-- This is when someone invites you to their session: -->\n    <div id=\"togetherjs-template-invite\" class=\"togetherjs-chat-item\">\n      <div class=\"togetherjs-person\"></div>\n      <div>\n        <span class=\"togetherjs-person-name\"></span>\n        пригласил <strong class=\"togetherjs-if-forEveryone\">кого-либо</strong>\n        <strong class=\"togetherjs-ifnot-forEveryone\">Вас</strong>\n        на <a href=\"\" data-togetherjs-subattr-href=\"href\" class=\"togetherjs-sub-hrefTitle\" target=\"_blank\"></a>\n      </div>\n    </div>\n\n  </div>\n\n  <!-- The pointer at the side of a window: -->\n  <div id=\"togetherjs-window-pointer-right\" style=\"display: none\"></div>\n  <div id=\"togetherjs-window-pointer-left\" style=\"display: none\"></div>\n\n  <!-- The element that overlaps the background of the page during a modal dialog: -->\n  <div id=\"togetherjs-modal-background\" style=\"display: none\"></div>\n\n  <!-- Some miscellaneous templates -->\n  <div style=\"display: none\">\n\n    <!-- This is the cursor: -->\n    <div id=\"togetherjs-template-cursor\" class=\"togetherjs-cursor togetherjs\">\n      <!-- Note: images/cursor.svg is a copy of this (for editing): -->\n      <!-- crossbrowser svg dropshadow http://demosthenes.info/blog/600/Creating-a-True-CrossBrowser-Drop-Shadow- -->\n      <svg version=\"1.1\" id=\"Layer_1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" x=\"0px\" y=\"0px\"\n      \t width=\"15px\" height=\"22.838px\" viewBox=\"96.344 146.692 15 22.838\" enable-background=\"new 96.344 146.692 15 22.838\"\n      \t xml:space=\"preserve\">\n      <path fill=\"#231F20\" d=\"M98.984,146.692c2.167,1.322,1.624,6.067,3.773,7.298c-0.072-0.488,2.512-0.931,3.097,0\n      \tc0.503,0.337,1.104-0.846,2.653,0.443c0.555,0.593,3.258,2.179,1.001,8.851c-0.446,1.316,2.854,0.135,1.169,2.619\n      \tc-3.748,5.521-9.455,2.787-9.062,1.746c1.06-2.809-6.889-4.885-4.97-9.896c0.834-2.559,2.898,0.653,2.923,0.29\n      \tc-0.434-1.07-2.608-5.541-2.923-6.985C96.587,150.793,95.342,147.033,98.984,146.692z\"/>\n      </svg>\n      <!-- <img class=\"togetherjs-cursor-img\" src=\"http://localhost:8080/togetherjs/images/cursor.svg\"> -->\n      <span class=\"togetherjs-cursor-container\">\n        <span class=\"togetherjs-cursor-name\"></span>\n        <span style=\"display:none\" class=\"togetherjs-cursor-typing\" id=\"togetherjs-cursor-typebox\">\n          <span class=\"togetherjs-typing-ellipse-one\">&#9679;</span><span class=\"togetherjs-typing-ellipse-two\">&#9679;</span><span class=\"togetherjs-typing-ellipse-three\">&#9679;</span>\n        </span>\n        <!-- Displayed when the cursor is below the screen: -->\n        <span class=\"togetherjs-cursor-down\">\n\n        </span>\n        <!-- Displayed when the cursor is above the screen: -->\n        <span class=\"togetherjs-cursor-up\">\n\n        </span>\n      </span>\n    </div>\n\n    <!-- This is the element that goes around focused form elements: -->\n    <div id=\"togetherjs-template-focus\">\n      <div class=\"togetherjs-focus togetherjs-person-bordercolor\"></div>\n    </div>\n\n    <!-- This is a click: -->\n    <div id=\"togetherjs-template-click\" class=\"togetherjs-click togetherjs\">\n    </div>\n  </div>\n</div>\n",
+    walkthrough: "<!--\n    Any elements with .togetherjs-walkthrough-firsttime will only be\n    displayed on during the first-time experience.  Any elements with\n    .togetherjs-walkthrough-not-firsttime will only be displayed when\n    the walkthrough is accessed through the Help menu.\n\n    Note you *cannot* use <section class=\"togetherjs-walkthrough-slide\n    togetherjs-walkthrough-firsttime\">: the number of sections must be the\n    same regardless.\n  -->\n<div id=\"togetherjs-walkthrough\" class=\"togetherjs-modal togetherjs-modal-wide\">\n  <header>Вы используете TOOL_NAME!<button class=\"togetherjs-close\"></button></header>\n\n  <div id=\"togetherjs-walkthrough-previous\"></div>\n  <div id=\"togetherjs-walkthrough-next\"></div>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-intro.png\"></p>\n\t<p>TOOL_NAME - это служба для Вашего сайта, которая помогает Вам сотрудничать с другими в реальном времени на сайте SITE_NAME </p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <div class=\"togetherjs-walkthrough-firsttime\">\n      <div class=\"togetherjs-walkthrough-main-image\">\n        <div class=\"togetherjs-walkthrough-avatar-section\">\n          <div class=\"togetherjs-avatar-preview togetherjs-person togetherjs-person-self\"></div>\n          <div class=\"togetherjs-avatar-upload-input\"><input type=\"file\" class=\"togetherjs-upload-avatar\"></div>\n        </div>\n        <input class=\"togetherjs-self-name\" type=\"text\" placeholder=\"Введите своё имя\">\n        <div class=\"togetherjs-swatch togetherjs-person-bgcolor-self\"></div>\n        <div class=\"togetherjs-save-settings\">\n          <button class=\"togetherjs-avatar-save togetherjs-primary\">\n            <span id=\"togetherjs-avatar-when-unsaved\">\"\"Сохранить\"\"</span>\n            <span id=\"togetherjs-avatar-when-saved\" style=\"display: none\">Сохранено!</span>\n          </button>\n        </div>\n      </div>\n      <p>Задайте свои аватар, имя и пользовательский цвет вверху. При желании изменить их позднее, щёлкните по кнопке Профиль.</p>\n    </div>\n    <div class=\"togetherjs-walkthrough-not-firsttime\">\n      <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-profile.png\"></p>\n      <p>Вы можете изменить свои аватар, имя и пользовательский цвет, используя кнопку Профиль.</p>\n    </div>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-ifnot-creator\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-invite.png\">\n    </p>\n    <p class=\"togetherjs-ifnot-creator\">Вы можете пригласить ещё друзей на Ваш сеанс, послав им ссылку с приглашением на панели TOOL_NAME.</p>\n    <p class=\"togetherjs-walkthrough-main-image togetherjs-if-creator\">\n      <span class=\"togetherjs-walkthrough-sendlink\">\n        Скопируйте и приклейте эту ссылку в IM или в имейл, чтобы пригласить друзей.<br>\n      </span>\n      <input type=\"text\" class=\"togetherjs-share-link\">\n    </p>\n    <p class=\"togetherjs-if-creator\">Пошлите другу ссылку вверху, чтобы он мог присоединиться к Вашему сеансу! Вы также можете найти эту ссылку с приглашением на панели TOOL_NAME.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-participant.png\"></p>\n    <p>Друзья, которые присоединятся к Вашему сеансу TOOL_NAME, появятся здесь. Вы можете щёлкнуть по аватару друга, чтобы увидеть больше информации.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-chat.png\"></p>\n    <p>Когда Ваши друзья присоединятся к Вашему сеансу TOOL_NAME, Вы сможете общаться с ними здесь!</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-rtc.png\"></p>\n    <p>Если Ваш браузер поддерживает аудио-чат, Вы можете запустить его нажатием на иконку микрофона. Узнайте побольше об этой экспериментальной функции <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">здесь</a>.</p>\n  </section>\n\n  <section class=\"togetherjs-walkthrough-slide\">\n    <p class=\"togetherjs-walkthrough-main-image\"><img src=\"http://localhost:8080/togetherjs/images/walkthrough-images-logo.png\"></p>\n    <p>Ну вот Вы и готовы использовать TOOL_NAME. Теперь начинайте сотрудничать на сайте SITE_NAME!</p>\n  </section>\n\n  <div style=\"display: none\">\n    <!-- There is one of these created for each slide: -->\n    <span id=\"togetherjs-template-walkthrough-slide-progress\" class=\"togetherjs-walkthrough-slide-progress\">&#9679;</span>\n  </div>\n  <section id=\"togetherjs-walkthrough-progress\">\n  </section>\n\n  <section class=\"togetherjs-buttons\">\n    <button class=\"togetherjs-primary togetherjs-dismiss\">Я готов!</button>\n  </section>\n\n</div><!-- /.togetherjs-modal -->\n",
+    names: "Лысый Лис, Большой Бобёр, Умная Сова, Жирный Жираф, Серый Волк, Толстый Тюлень, Рыба-кит, Кисьян Котяра, Известная Игуана"
+  };
+});
+
+TogetherJS.require = TogetherJS._requireObject = require;
+TogetherJS._loaded = true;
+require(["session"]);
+}());
diff --git a/v3/js/togetherjs/togetherjs/ui.js b/v3/js/togetherjs/togetherjs/ui.js
new file mode 100644
index 000000000..109845219
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/ui.js
@@ -0,0 +1,1516 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["require", "jquery", "util", "session", "templates", "templating", "linkify", "peers", "windowing", "tinycolor", "elementFinder", "visibilityApi"], function (require, $, util, session, templates, templating, linkify, peers, windowing, tinycolor, elementFinder, visibilityApi) {
+  var ui = util.Module('ui');
+  var assert = util.assert;
+  var AssertionError = util.AssertionError;
+  var chat;
+  var $window = $(window);
+  // This is also in togetherjs.less, as @button-height:
+  var BUTTON_HEIGHT = 60 + 1; // 60 is button height, 1 is border
+  // chat TextArea
+  var TEXTAREA_LINE_HEIGHT = 20; // in pixels
+  var TEXTAREA_MAX_LINES = 5;
+  // This is also in togetherjs.less, under .togetherjs-animated
+  var ANIMATION_DURATION = 1000;
+  // Time the new user window sticks around until it fades away:
+  var NEW_USER_FADE_TIMEOUT = 5000;
+  // This is set when an animation will keep the UI from being ready
+  // (until this time):
+  var finishedAt = null;
+  // Time in milliseconds for the dock to animate out:
+  var DOCK_ANIMATION_TIME = 300;
+  // If two chat messages come from the same person in this time
+  // (milliseconds) then they are collapsed into one message:
+  var COLLAPSE_MESSAGE_LIMIT = 5000;
+
+  var COLORS = [
+    "#8A2BE2", "#7FFF00", "#DC143C", "#00FFFF", "#8FBC8F", "#FF8C00", "#FF00FF",
+    "#FFD700", "#F08080", "#90EE90", "#FF6347"];
+
+  // This would be a circular import, but we just need the chat module sometime
+  // after everything is loaded, and this is sure to complete by that time:
+  require(["chat"], function (c) {
+    chat = c;
+  });
+
+  /* Displays some toggleable element; toggleable elements have a
+     data-toggles attribute that indicates what other elements should
+     be hidden when this element is shown. */
+  ui.displayToggle = function (el) {
+    el = $(el);
+    assert(el.length, "No element", arguments[0]);
+    var other = $(el.attr("data-toggles"));
+    assert(other.length, "Cannot toggle", el[0], "selector", other.selector);
+    other.hide();
+    el.show();
+  };
+
+  function panelPosition() {
+    var iface = $("#togetherjs-dock");
+    if (iface.hasClass("togetherjs-dock-right")) {
+      return "right";
+    } else if (iface.hasClass("togetherjs-dock-left")) {
+      return "left";
+    } else if (iface.hasClass("togetherjs-dock-bottom")) {
+      return "bottom";
+    } else {
+      throw new AssertionError("#togetherjs-dock doesn't have positioning class");
+    }
+  }
+
+  ui.container = null;
+
+  // This is used for some signalling when ui.prepareUI and/or
+  // ui.activateUI is called before the DOM is fully loaded:
+  var deferringPrepareUI = null;
+
+  function deferForContainer(func) {
+    /* Defers any calls to func() until after ui.container is set
+       Function cannot have a return value (as sometimes the call will
+       become async).  Use like:
+
+       method: deferForContainer(function (args) {...})
+       */
+    return function () {
+      if (ui.container) {
+        func.apply(this, arguments);
+      }
+      var self = this;
+      var args = Array.prototype.slice.call(arguments);
+      session.once("ui-ready", function () {
+        func.apply(self, args);
+      });
+    };
+  }
+
+  // This is called before activateUI; it doesn't bind anything, but does display
+  // the dock
+  // FIXME: because this module has lots of requirements we can't do
+  // this before those requirements are loaded.  Maybe worth splitting
+  // this out?  OTOH, in production we should have all the files
+  // combined so there's not much problem loading those modules.
+  ui.prepareUI = function () {
+    if (! (document.readyState == "complete" || document.readyState == "interactive")) {
+      // Too soon!  Wait a sec...
+      deferringPrepareUI = "deferring";
+      document.addEventListener("DOMContentLoaded", function () {
+        var d = deferringPrepareUI;
+        deferringPrepareUI = null;
+        ui.prepareUI();
+        // This happens when ui.activateUI is called before the document has been
+        // loaded:
+        if (d == "activate") {
+          ui.activateUI();
+        }
+      });
+      return;
+    }
+    var container = ui.container = $(templates("interface"));
+    assert(container.length);
+    $("body").append(container);
+    fixupAvatars(container);
+    if (session.firstRun && TogetherJS.startTarget) {
+      // Time at which the UI will be fully ready:
+      // (We have to do this because the offset won't be quite right
+      // until the animation finishes - attempts to calculate the
+      // offset without taking into account CSS transforms have so far
+      // failed.)
+      var timeoutSeconds = DOCK_ANIMATION_TIME / 1000;
+      finishedAt = Date.now() + DOCK_ANIMATION_TIME + 50;
+      setTimeout(function () {
+        finishedAt = Date.now() + DOCK_ANIMATION_TIME + 40;
+        var iface = container.find("#togetherjs-dock");
+        var start = iface.offset();
+        var pos = $(TogetherJS.startTarget).offset();
+        pos.top = Math.floor(pos.top - start.top);
+        pos.left = Math.floor(pos.left - start.left);
+        var translate = "translate(" + pos.left + "px, " + pos.top + "px)";
+        iface.css({
+          MozTransform: translate,
+          WebkitTransform: translate,
+          transform: translate,
+          opacity: "0.0"
+        });
+        setTimeout(function () {
+          // We keep recalculating because the setTimeout times aren't always so accurate:
+          finishedAt = Date.now() + DOCK_ANIMATION_TIME + 20;
+          var transition = "transform " + timeoutSeconds + "s ease-out, ";
+          transition += "opacity " + timeoutSeconds + "s ease-out";
+          iface.css({
+            opacity: "1.0",
+            MozTransition: "-moz-" + transition,
+            MozTransform: "translate(0, 0)",
+            WebkitTransition: "-webkit-" + transition,
+            WebkitTransform: "translate(0, 0)",
+            transition: transition,
+            transform: "translate(0, 0)"
+          });
+          setTimeout(function () {
+            finishedAt = null;
+            iface.attr("style", "");
+          }, 510);
+        }, 5);
+      }, 5);
+    }
+    if (TogetherJS.startTarget) {
+      var el = $(TogetherJS.startTarget);
+      var text = el.text().toLowerCase().replace(/\s+/g, " ");
+      text = text.replace(/^\s*/, "").replace(/\s*$/, "");
+      if (text == "start togetherjs") {
+        el.attr("data-end-togetherjs-html", "End TogetherJS");
+      }
+      if (el.attr("data-end-togetherjs-html")) {
+        el.attr("data-start-togetherjs-html", el.html());
+        el.html(el.attr("data-end-togetherjs-html"));
+      }
+      el.addClass("togetherjs-started");
+    }
+    ui.container.find(".togetherjs-window > header, .togetherjs-modal > header").each(function () {
+      $(this).append($('<button class="togetherjs-close"></button>'));
+    });
+
+    TogetherJS.config.track("disableWebRTC", function (hide, previous) {
+      if (hide && ! previous) {
+        ui.container.find("#togetherjs-audio-button").hide();
+        adjustDockSize(-1);
+      } else if ((! hide) && previous) {
+        ui.container.find("#togetherjs-audio-button").show();
+        adjustDockSize(1);
+      }
+    });
+
+    // pgbovine -- disable the user profile and "Invite a friend" link dialogs
+    ui.container.find("#togetherjs-profile-button").hide();
+    ui.container.find("#togetherjs-share-button").hide();
+    adjustDockSize(-2);
+
+  };
+
+  // After prepareUI, this actually makes the interface live.  We have
+  // to do this later because we call prepareUI when many components
+  // aren't initialized, so we don't even want the user to be able to
+  // interact with the interface.  But activateUI is called once
+  // everything is loaded and ready for interaction.
+  ui.activateUI = function () {
+    if (deferringPrepareUI) {
+      console.warn("ui.activateUI called before document is ready; waiting...");
+      deferringPrepareUI = "activate";
+      return;
+    }
+    if (! ui.container) {
+      ui.prepareUI();
+    }
+    var container = ui.container;
+
+    //create the overlay
+    if($.browser.mobile) {
+      // $("body").append( "\x3cdiv class='overlay' style='position: absolute; top: 0; left: 0; background-color: rgba(0,0,0,0); width: 120%; height: 100%; z-index: 1000; margin: -10px'>\x3c/div>" );
+    }
+
+    // The share link:
+    ui.prepareShareLink(container);
+    container.find("input.togetherjs-share-link").on("keydown", function (event) {
+      if (event.which == 27) {
+        windowing.hide("#togetherjs-share");
+        return false;
+      }
+      return undefined;
+    });
+    session.on("shareId", updateShareLink);
+
+    // The chat input element:
+    var input = container.find("#togetherjs-chat-input");
+    input.bind("keydown", function (event) {
+      if (event.which == 13 && !event.shiftKey) { // Enter without Shift pressed
+        submitChat();
+        return false;
+      }
+      if (event.which == 27) { // Escape
+        windowing.hide("#togetherjs-chat");
+        return false;
+      }
+    });
+
+    function submitChat() {
+      var val = input.val();
+      if ($.trim(val)) {
+        input.val("");
+        // triggering the event manually to avoid the addition of newline character to the textarea:
+        input.trigger("input").trigger("propertychange");
+        chat.submit(val);
+      }
+    }
+    // auto-resize textarea:
+    input.on("input propertychange", function () {
+      var $this = $(this);
+      var actualHeight = $this.height();
+      // reset the height of textarea to remove trailing empty space (used for shrinking):
+      $this.height(TEXTAREA_LINE_HEIGHT);
+      this.scrollTop = 0;
+      // scroll to bottom:
+      this.scrollTop = 9999;
+      var newHeight = this.scrollTop + $this.height();
+      var maxHeight = TEXTAREA_MAX_LINES * TEXTAREA_LINE_HEIGHT;
+      if (newHeight > maxHeight) {
+        newHeight = maxHeight;
+        this.style.overflowY = "scroll";
+      } else {
+        this.style.overflowY = "hidden";
+      }
+      this.style.height = newHeight + "px";
+      var diff = newHeight - actualHeight;
+      $("#togetherjs-chat-input-box").height($("#togetherjs-chat-input-box").height() + diff);
+      $("#togetherjs-chat-messages").height($("#togetherjs-chat-messages").height() - diff);
+      return false;
+    });
+
+    util.testExpose({submitChat: submitChat});
+
+    // Moving the window:
+    // FIXME: this should probably be stickier, and not just move the window around
+    // so abruptly
+    var anchor = container.find("#togetherjs-dock-anchor");
+    assert(anchor.length);
+    // FIXME: This is in place to temporarily disable dock dragging:
+    anchor = container.find("#togetherjs-dock-anchor-disabled");
+    anchor.mousedown(function (event) {
+      var iface = $("#togetherjs-dock");
+      // FIXME: switch to .offset() and pageX/Y
+      var startPos = panelPosition();
+      function selectoff() {
+        return false;
+      }
+      function mousemove(event2) {
+        var fromRight = $window.width() + window.pageXOffset - event2.pageX;
+        var fromLeft = event2.pageX - window.pageXOffset;
+        var fromBottom = $window.height() + window.pageYOffset - event2.pageY;
+        // FIXME: this is to temporarily disable the bottom view:
+        fromBottom = 10000;
+
+        var pos;
+        if (fromLeft < fromRight && fromLeft < fromBottom) {
+          pos = "left";
+        } else if (fromRight < fromLeft && fromRight < fromBottom) {
+          pos = "right";
+        } else {
+          pos = "bottom";
+        }
+        iface.removeClass("togetherjs-dock-left");
+        iface.removeClass("togetherjs-dock-right");
+        iface.removeClass("togetherjs-dock-bottom");
+        iface.addClass("togetherjs-dock-" + pos);
+        if (startPos && pos != startPos) {
+          windowing.hide();
+          startPos = null;
+        }
+      }
+      $(document).bind("mousemove", mousemove);
+      // If you don't turn selection off it will still select text, and show a
+      // text selection cursor:
+      $(document).bind("selectstart", selectoff);
+      // FIXME: it seems like sometimes we lose the mouseup event, and it's as though
+      // the mouse is stuck down:
+      $(document).one("mouseup", function () {
+        $(document).unbind("mousemove", mousemove);
+        $(document).unbind("selectstart", selectoff);
+      });
+      return false;
+    });
+
+    function openDock() {
+      $('.togetherjs-window').animate({
+        opacity: 1
+      });
+      $('#togetherjs-dock-participants').animate({
+        opacity: 1
+      });
+      $('#togetherjs-dock #togetherjs-buttons').animate({
+        opacity: 1
+      });
+
+      //for iphone
+      if($(window).width() < 480) {
+        $('.togetherjs-dock-right').animate({
+          width: "204px"
+        }, {
+          duration:60, easing:"linear"
+        });
+      }
+
+      //for ipad
+      else {
+        $('.togetherjs-dock-right').animate({
+          width: "27%"
+        }, {
+          duration:60, easing:"linear"
+        });
+      }
+
+
+      // add bg overlay
+      // $("body").append( "\x3cdiv class='overlay' style='position: absolute; top: 0; left: -2px; background-color: rgba(0,0,0,0.5); width: 200%; height: 400%; z-index: 1000; margin: 0px;'>\x3c/div>" );
+
+      //disable vertical scrolling
+      // $("body").css({
+      //   "position": "fixed",
+      //   top: 0,
+      //   left: 0
+      // });
+
+      //replace the anchor icon
+      var src = "/togetherjs/images/togetherjs-logo-close.png";
+      $("#togetherjs-dock-anchor #togetherjs-dock-anchor-horizontal img").attr("src", src);
+    }
+
+    function closeDock() {
+      //enable vertical scrolling
+      $("body").css({
+        "position": "",
+        top: "",
+        left: ""
+      });
+
+      //replace the anchor icon
+      var src = "/togetherjs/images/togetherjs-logo-open.png";
+      $("#togetherjs-dock-anchor #togetherjs-dock-anchor-horizontal img").attr("src", src);
+
+      $('.togetherjs-window').animate({
+        opacity: 0
+      });
+      $('#togetherjs-dock-participants').animate({
+        opacity: 0
+      });
+      $('#togetherjs-dock #togetherjs-buttons').animate({
+        opacity: 0
+      });
+      $('.togetherjs-dock-right').animate({
+        width: "40px"
+      }, {
+        duration:60, easing:"linear"
+      });
+
+      // remove bg overlay
+      //$(".overlay").remove();
+    }
+
+    // Setting the anchor button + dock mobile actions
+    if($.browser.mobile) {
+
+      // toggle the audio button
+      $("#togetherjs-audio-button").click(function () {
+        windowing.toggle("#togetherjs-rtc-not-supported");
+      });
+
+      // toggle the profile button
+      $("#togetherjs-profile-button").click(function () {
+        windowing.toggle("#togetherjs-menu-window");
+      });
+
+      // $("body").append( "\x3cdiv class='overlay' style='position: absolute; top: 0; left: -2px; background-color: rgba(0,0,0,0.5); width: 200%; height: 400%; z-index: 1000; margin: 0px'>\x3c/div>" );
+
+      //disable vertical scrolling
+      // $("body").css({
+      //   "position": "fixed",
+      //   top: 0,
+      //   left: 0
+      // });
+
+      //replace the anchor icon
+      var src = "/togetherjs/images/togetherjs-logo-close.png";
+      $("#togetherjs-dock-anchor #togetherjs-dock-anchor-horizontal img").attr("src", src);
+
+      $("#togetherjs-dock-anchor").toggle(function() {
+          closeDock();
+        },function(){
+          openDock();
+      });
+    }
+
+    $("#togetherjs-share-button").click(function () {
+      windowing.toggle("#togetherjs-share");
+    });
+
+    $("#togetherjs-profile-button").click(function (event) {
+      if ($.browser.mobile) {
+        windowing.show("#togetherjs-menu-window");
+        return false;
+      }
+      toggleMenu();
+      event.stopPropagation();
+      return false;
+    });
+
+    $("#togetherjs-menu-feedback, #togetherjs-menu-feedback-button").click(function(){
+      windowing.hide();
+      hideMenu();
+      windowing.show("#togetherjs-feedback-form");
+    });
+
+    $("#togetherjs-menu-help, #togetherjs-menu-help-button").click(function () {
+      windowing.hide();
+      hideMenu();
+      require(["walkthrough"], function (walkthrough) {
+        windowing.hide();
+        walkthrough.start(false);
+      });
+    });
+
+    $("#togetherjs-menu-update-name").click(function () {
+      var input = $("#togetherjs-menu .togetherjs-self-name");
+      input.css({
+        width: $("#togetherjs-menu").width() - 32 + "px"
+      });
+      ui.displayToggle("#togetherjs-menu .togetherjs-self-name");
+      $("#togetherjs-menu .togetherjs-self-name").focus();
+    });
+
+    $("#togetherjs-menu-update-name-button").click(function () {
+      windowing.show("#togetherjs-edit-name-window");
+      $("#togetherjs-edit-name-window input").focus();
+    });
+
+    $("#togetherjs-menu .togetherjs-self-name").bind("keyup change", function (event) {
+      console.log("alrighty", event);
+      if (event.which == 13) {
+        ui.displayToggle("#togetherjs-self-name-display");
+        return;
+      }
+      var val = $("#togetherjs-menu .togetherjs-self-name").val();
+      console.log("values!!", val);
+      if (val) {
+        peers.Self.update({name: val});
+      }
+    });
+
+    $("#togetherjs-menu-update-avatar, #togetherjs-menu-update-avatar-button").click(function () {
+      hideMenu();
+      windowing.show("#togetherjs-avatar-edit");
+    });
+
+    $("#togetherjs-menu-end, #togetherjs-menu-end-button").click(function () {
+      hideMenu();
+      windowing.show("#togetherjs-confirm-end");
+    });
+
+    $("#togetherjs-end-session").click(function () {
+      session.close();
+      //$(".overlay").remove();
+
+    });
+
+    $("#togetherjs-menu-update-color").click(function () {
+      var picker = $("#togetherjs-pick-color");
+      if (picker.is(":visible")) {
+        picker.hide();
+        return;
+      }
+      picker.show();
+      bindPicker();
+      picker.find(".togetherjs-swatch-active").removeClass("togetherjs-swatch-active");
+      picker.find(".togetherjs-swatch[data-color=\"" + peers.Self.color + "\"]").addClass("togetherjs-swatch-active");
+    });
+
+    $("#togetherjs-pick-color").click(".togetherjs-swatch", function (event) {
+      var swatch = $(event.target);
+      var color = swatch.attr("data-color");
+      peers.Self.update({
+        color: color
+      });
+      event.stopPropagation();
+      return false;
+    });
+
+    $("#togetherjs-pick-color").click(function (event) {
+      $("#togetherjs-pick-color").hide();
+      event.stopPropagation();
+      return false;
+    });
+
+    COLORS.forEach(function (color) {
+      var el = templating.sub("swatch");
+      el.attr("data-color", color);
+      var darkened = tinycolor.darken(color);
+      el.css({
+        backgroundColor: color,
+        borderColor: darkened
+      });
+      $("#togetherjs-pick-color").append(el);
+    });
+
+    $("#togetherjs-chat-button").click(function () {
+      windowing.toggle("#togetherjs-chat");
+    });
+
+    session.on("display-window", function (id, element) {
+      if (id == "togetherjs-chat") {
+        if (! $.browser.mobile) {
+          $("#togetherjs-chat-input").focus();
+        }
+      } else if (id == "togetherjs-share") {
+        var link = element.find("input.togetherjs-share-link");
+        if (link.is(":visible")) {
+          link.focus().select();
+        }
+      }
+    });
+
+    container.find("#togetherjs-chat-notifier").click(function (event) {
+      if ($(event.target).is("a") || container.is(".togetherjs-close")) {
+        return;
+      }
+      windowing.show("#togetherjs-chat");
+    });
+
+    // FIXME: Don't think this makes sense
+    $(".togetherjs header.togetherjs-title").each(function (index, item) {
+      var button = $('<button class="togetherjs-minimize"></button>');
+      button.click(function (event) {
+        var window = button.closest(".togetherjs-window");
+        windowing.hide(window);
+      });
+      $(item).append(button);
+    });
+
+    $("#togetherjs-avatar-done").click(function () {
+      ui.displayToggle("#togetherjs-no-avatar-edit");
+    });
+
+    $("#togetherjs-self-color").css({backgroundColor: peers.Self.color});
+
+    var avatar = peers.Self.avatar;
+    if (avatar) {
+      $("#togetherjs-self-avatar").attr("src", avatar);
+    }
+
+    var starterButton = $("#togetherjs-starter button");
+    starterButton.click(function () {
+      windowing.show("#togetherjs-about");
+    }).addClass("togetherjs-running");
+    if (starterButton.text() == "Start TogetherJS") {
+      starterButton.attr("data-start-text", starterButton.text());
+      starterButton.text("End TogetherJS Session");
+    }
+
+    ui.activateAvatarEdit(container, {
+      onSave: function () {
+        windowing.hide("#togetherjs-avatar-edit");
+      }
+    });
+
+    TogetherJS.config.track("inviteFromRoom", function (inviter, previous) {
+      if (inviter) {
+        container.find("#togetherjs-invite").show();
+      } else {
+        container.find("#togetherjs-invite").hide();
+      }
+    });
+
+    container.find("#togetherjs-menu-refresh-invite").click(refreshInvite);
+    container.find("#togetherjs-menu-invite-anyone").click(function () {
+      invite(null);
+    });
+
+    // The following lines should be at the end of this function
+    // (new code goes above)
+    session.emit("new-element", ui.container);
+
+    if (finishedAt && finishedAt > Date.now()) {
+      setTimeout(function () {
+        finishedAt = null;
+        session.emit("ui-ready", ui);
+      }, finishedAt - Date.now());
+    } else {
+      session.emit("ui-ready", ui);
+    }
+
+  }; // End ui.activateUI()
+
+  ui.activateAvatarEdit = function (container, options) {
+    options = options || {};
+    var pendingImage = null;
+
+    container.find(".togetherjs-avatar-save").prop("disabled", true);
+
+    container.find(".togetherjs-avatar-save").click(function () {
+      if (pendingImage) {
+        peers.Self.update({avatar: pendingImage});
+        container.find(".togetherjs-avatar-save").prop("disabled", true);
+        if (options.onSave) {
+          options.onSave();
+        }
+      }
+    });
+
+    container.find(".togetherjs-upload-avatar").on("change", function () {
+      util.readFileImage(this).then(function (url) {
+        sizeDownImage(url).then(function (smallUrl) {
+          pendingImage = smallUrl;
+          container.find(".togetherjs-avatar-preview").css({
+            backgroundImage: 'url(' + pendingImage + ')'
+          });
+          container.find(".togetherjs-avatar-save").prop("disabled", false);
+          if (options.onPending) {
+            options.onPending();
+          }
+        });
+      });
+    });
+
+  };
+
+  function sizeDownImage(imageUrl) {
+    return util.Deferred(function (def) {
+      var $canvas = $("<canvas>");
+      $canvas[0].height = session.AVATAR_SIZE;
+      $canvas[0].width = session.AVATAR_SIZE;
+      var context = $canvas[0].getContext("2d");
+      var img = new Image();
+      img.src = imageUrl;
+      // Sometimes the DOM updates immediately to call
+      // naturalWidth/etc, and sometimes it doesn't; using setTimeout
+      // gives it a chance to catch up
+      setTimeout(function () {
+        var width = img.naturalWidth || img.width;
+        var height = img.naturalHeight || img.height;
+        width = width * (session.AVATAR_SIZE / height);
+        height = session.AVATAR_SIZE;
+        context.drawImage(img, 0, 0, width, height);
+        def.resolve($canvas[0].toDataURL("image/png"));
+      });
+    });
+  }
+
+  function fixupAvatars(container) {
+    /* All <div class="togetherjs-person" /> elements need an element inside,
+       so we add that element here */
+    container.find(".togetherjs-person").each(function () {
+      var $this = $(this);
+      var inner = $this.find(".togetherjs-person-avatar-swatch");
+      if (! inner.length) {
+        $this.append('<div class="togetherjs-person-avatar-swatch"></div>');
+      }
+    });
+  }
+
+  ui.prepareShareLink = function (container) {
+    container.find("input.togetherjs-share-link").click(function () {
+      $(this).select();
+    }).change(function () {
+      updateShareLink();
+    });
+    container.find("a.togetherjs-share-link").click(function () {
+      // FIXME: this is currently opening up Bluetooth, not sharing a link
+      if (false && window.MozActivity) {
+        var activity = new MozActivity({
+          name: "share",
+          data: {
+            type: "url",
+            url: $(this).attr("href")
+          }
+        });
+      }
+      // FIXME: should show some help if you actually try to follow the link
+      // like this, instead of simply suppressing it
+      return false;
+    });
+    updateShareLink();
+  };
+
+  // Menu
+
+  function showMenu(event) {
+    var el = $("#togetherjs-menu");
+    assert(el.length);
+    el.show();
+    bindMenu();
+    $(document).bind("click", maybeHideMenu);
+  }
+
+  function bindMenu() {
+    var el = $("#togetherjs-menu:visible");
+    if (el.length) {
+      var bound = $("#togetherjs-profile-button");
+      var boundOffset = bound.offset();
+      el.css({
+        top: boundOffset.top + bound.height() - $window.scrollTop() + "px",
+        left: (boundOffset.left + bound.width() - 10 - el.width() - $window.scrollLeft()) + "px"
+      });
+    }
+  }
+
+  function bindPicker() {
+    var picker = $("#togetherjs-pick-color:visible");
+    if (picker.length) {
+      var menu = $("#togetherjs-menu-update-color");
+      var menuOffset = menu.offset();
+      picker.css({
+        top: menuOffset.top + menu.height(),
+        left: menuOffset.left
+      });
+    }
+  }
+
+  session.on("resize", function () {
+    bindMenu();
+    bindPicker();
+  });
+
+  function toggleMenu() {
+    if ($("#togetherjs-menu").is(":visible")) {
+      hideMenu();
+    } else {
+      showMenu();
+    }
+  }
+
+  function hideMenu() {
+    var el = $("#togetherjs-menu");
+    el.hide();
+    $(document).unbind("click", maybeHideMenu);
+    ui.displayToggle("#togetherjs-self-name-display");
+    $("#togetherjs-pick-color").hide();
+  }
+
+  function maybeHideMenu(event) {
+    var t = event.target;
+    while (t) {
+      if (t.id == "togetherjs-menu") {
+        // Click inside the menu, ignore this
+        return;
+      }
+      t = t.parentNode;
+    }
+    hideMenu();
+  }
+
+  function adjustDockSize(buttons) {
+    /* Add or remove spots from the dock; positive number to
+       add button(s), negative number to remove button(s)
+       */
+    assert(typeof buttons == "number");
+    assert(buttons && Math.floor(buttons) == buttons);
+    var iface = $("#togetherjs-dock");
+    var newHeight = iface.height() + (BUTTON_HEIGHT * buttons);
+    // pgbovine - set the lower limit to 1 instead of 3 ...
+    assert(newHeight >= BUTTON_HEIGHT * 1, "Height went too low (", newHeight,
+           "), should never be less than 2 buttons high (", BUTTON_HEIGHT * 1, ")");
+    //assert(newHeight >= BUTTON_HEIGHT * 3, "Height went too low (", newHeight,
+    //       "), should never be less than 3 buttons high (", BUTTON_HEIGHT * 3, ")");
+    iface.css({
+      height: newHeight + "px"
+    });
+  }
+
+  // Misc
+
+  function updateShareLink() {
+    var input = $("input.togetherjs-share-link");
+    var link = $("a.togetherjs-share-link");
+    var display = $("#togetherjs-session-id");
+    if (! session.shareId) {
+      input.val("");
+      link.attr("href", "#");
+      display.text("(none)");
+    } else {
+      input.val(session.shareUrl());
+      link.attr("href", session.shareUrl());
+      display.text(session.shareId);
+    }
+  }
+
+  session.on("close", function () {
+
+    if($.browser.mobile) {
+      // remove bg overlay
+      //$(".overlay").remove();
+
+      //after hitting End, reset window draggin
+      $("body").css({
+        "position": "",
+        top: "",
+        left: ""
+      });
+
+    }
+
+    if (ui.container) {
+      ui.container.remove();
+      ui.container = null;
+    }
+    // Clear out any other spurious elements:
+    $(".togetherjs").remove();
+    var starterButton = $("#togetherjs-starter button");
+    starterButton.removeClass("togetherjs-running");
+    if (starterButton.attr("data-start-text")) {
+      starterButton.text(starterButton.attr("data-start-text"));
+      starterButton.attr("data-start-text", "");
+    }
+    if (TogetherJS.startTarget) {
+      var el = $(TogetherJS.startTarget);
+      if (el.attr("data-start-togetherjs-html")) {
+        el.html(el.attr("data-start-togetherjs-html"));
+      }
+      el.removeClass("togetherjs-started");
+    }
+  });
+
+  ui.chat = {
+    text: function (attrs) {
+      assert(typeof attrs.text == "string");
+      assert(attrs.peer);
+      assert(attrs.messageId);
+      var date = attrs.date || Date.now();
+      var lastEl = ui.container.find("#togetherjs-chat .togetherjs-chat-message");
+      if (lastEl.length) {
+        lastEl = $(lastEl[lastEl.length-1]);
+      }
+      var lastDate = null;
+      if (lastEl) {
+        lastDate = parseInt(lastEl.attr("data-date"), 10);
+      }
+      if (lastEl && lastEl.attr("data-person") == attrs.peer.id &&
+          lastDate && date < lastDate + COLLAPSE_MESSAGE_LIMIT) {
+        lastEl.attr("data-date", date);
+        var content = lastEl.find(".togetherjs-chat-content");
+        assert(content.length);
+        attrs.text = content.text() + "\n" + attrs.text;
+        attrs.messageId = lastEl.attr("data-message-id");
+        lastEl.remove();
+      }
+      var el = templating.sub("chat-message", {
+        peer: attrs.peer,
+        content: attrs.text,
+        date: date
+      });
+      linkify(el.find(".togetherjs-chat-content"));
+      el.attr("data-person", attrs.peer.id)
+        .attr("data-date", date)
+        .attr("data-message-id", attrs.messageId);
+      ui.chat.add(el, attrs.messageId, attrs.notify);
+    },
+
+    joinedSession: function (attrs) {
+      assert(attrs.peer);
+      var date = attrs.date || Date.now();
+      var el = templating.sub("chat-joined", {
+        peer: attrs.peer,
+        date: date
+      });
+      // FIXME: should bind the notification to the dock location
+      ui.chat.add(el, attrs.peer.className("join-message-"), 4000);
+    },
+
+    leftSession: function (attrs) {
+      assert(attrs.peer);
+      var date = attrs.date || Date.now();
+      var el = templating.sub("chat-left", {
+        peer: attrs.peer,
+        date: date,
+        declinedJoin: attrs.declinedJoin
+      });
+      // FIXME: should bind the notification to the dock location
+      ui.chat.add(el, attrs.peer.className("join-message-"), 4000);
+    },
+
+    system: function (attrs) {
+      assert(! attrs.peer);
+      assert(typeof attrs.text == "string");
+      var date = attrs.date || Date.now();
+      var el = templating.sub("chat-system", {
+        content: attrs.text,
+        date: date
+      });
+      ui.chat.add(el, undefined, true);
+    },
+
+    clear: deferForContainer(function () {
+      var container = ui.container.find("#togetherjs-chat-messages");
+      container.empty();
+    }),
+
+    urlChange: function (attrs) {
+      assert(attrs.peer);
+      assert(typeof attrs.url == "string");
+      assert(typeof attrs.sameUrl == "boolean");
+      var messageId = attrs.peer.className("url-change-");
+      // FIXME: duplicating functionality in .add():
+      var realId = "togetherjs-chat-" + messageId;
+      var date = attrs.date || Date.now();
+      var title;
+      // FIXME: strip off common domain from msg.url?  E.g., if I'm on
+      // http://example.com/foobar, and someone goes to http://example.com/baz then
+      // show only /baz
+      // FIXME: truncate long titles
+      if (attrs.title) {
+        title = attrs.title + " (" + attrs.url + ")";
+      } else {
+        title = attrs.url;
+      }
+      var el = templating.sub("url-change", {
+        peer: attrs.peer,
+        date: date,
+        href: attrs.url,
+        title: title,
+        sameUrl: attrs.sameUrl
+      });
+      el.find(".togetherjs-nudge").click(function () {
+        attrs.peer.nudge();
+        return false;
+      });
+      el.find(".togetherjs-follow").click(function () {
+        var url = attrs.peer.url;
+        if (attrs.peer.urlHash) {
+          url += attrs.peer.urlHash;
+        }
+        location.href = url;
+      });
+      var notify = ! attrs.sameUrl;
+      if (attrs.sameUrl && ! $("#" + realId).length) {
+        // Don't bother showing a same-url notification, if no previous notification
+        // had been shown
+        return;
+      }
+      ui.chat.add(el, messageId, notify);
+    },
+
+    invite: function (attrs) {
+      assert(attrs.peer);
+      assert(typeof attrs.url == "string");
+      var messageId = attrs.peer.className("invite-");
+      var date = attrs.date || Date.now();
+      var hrefTitle = attrs.url.replace(/\#?&togetherjs=.*/, "").replace(/^\w+:\/\//, "");
+      var el = templating.sub("invite", {
+        peer: attrs.peer,
+        date: date,
+        href: attrs.url,
+        hrefTitle: hrefTitle,
+        forEveryone: attrs.forEveryone
+      });
+      if (attrs.forEveryone) {
+        el.find("a").click(function () {
+          // FIXME: hacky way to do this:
+          chat.submit("Followed link to " + attrs.url);
+        });
+      }
+      ui.chat.add(el, messageId, true);
+    },
+
+    hideTimeout: null,
+
+    add: deferForContainer(function (el, id, notify) {
+      if (id) {
+        el.attr("id", "togetherjs-chat-" + util.safeClassName(id));
+      }
+      var container = ui.container.find("#togetherjs-chat-messages");
+      assert(container.length);
+      var popup = ui.container.find("#togetherjs-chat-notifier");
+      container.append(el);
+      ui.chat.scroll();
+      var doNotify = !! notify;
+      var section = popup.find("#togetherjs-chat-notifier-message");
+      if (notify && visibilityApi.hidden()) {
+        ui.container.find("#togetherjs-notification")[0].play();
+      }
+      if (id && section.data("message-id") == id) {
+        doNotify = true;
+      }
+      if (container.is(":visible")) {
+        doNotify = false;
+      }
+      if (doNotify) {
+        section.empty();
+        section.append(el.clone(true, true));
+        if (section.data("message-id") != id)  {
+          section.data("message-id", id || "");
+          windowing.show(popup);
+        } else if (! popup.is(":visible")) {
+          windowing.show(popup);
+        }
+        if (typeof notify == "number") {
+          // This is the amount of time we're supposed to notify
+          if (this.hideTimeout) {
+            clearTimeout(this.hideTimeout);
+            this.hideTimeout = null;
+          }
+          this.hideTimeout = setTimeout((function () {
+            windowing.hide(popup);
+            this.hideTimeout = null;
+          }).bind(this), notify);
+        }
+      }
+    }),
+
+    scroll: deferForContainer(function () {
+      var container = ui.container.find("#togetherjs-chat-messages")[0];
+      container.scrollTop = container.scrollHeight;
+    })
+
+  };
+
+  session.on("display-window", function (id, win) {
+    if (id == "togetherjs-chat") {
+      ui.chat.scroll();
+      windowing.hide("#togetherjs-chat-notifier");
+    }
+  });
+
+  /* This class is bound to peers.Peer instances as peer.view.
+     The .update() method is regularly called by peer objects when info changes. */
+  ui.PeerView = util.Class({
+
+    constructor: function (peer) {
+      assert(peer.isSelf !== undefined, "PeerView instantiated with non-Peer object");
+      this.peer = peer;
+      this.dockClick = this.dockClick.bind(this);
+    },
+
+    /* Takes an element and sets any person-related attributes on the element
+       Different from updates, which use the class names we set here: */
+    setElement: function (el) {
+      var count = 0;
+      var classes = ["togetherjs-person", "togetherjs-person-status",
+                     "togetherjs-person-name", "togetherjs-person-name-abbrev",
+                     "togetherjs-person-bgcolor", "togetherjs-person-swatch",
+                     "togetherjs-person-status", "togetherjs-person-role",
+                     "togetherjs-person-url", "togetherjs-person-url-title",
+                     "togetherjs-person-bordercolor"];
+      classes.forEach(function (cls) {
+        var els = el.find("." + cls);
+        els.addClass(this.peer.className(cls + "-"));
+        count += els.length;
+      }, this);
+      if (! count) {
+        console.warn("setElement(", el, ") doesn't contain any person items");
+      }
+      this.updateDisplay(el);
+    },
+
+    updateDisplay: deferForContainer(function (container) {
+      container = container || ui.container;
+      var abbrev = this.peer.name;
+      if (this.peer.isSelf) {
+        abbrev = "me";
+      }
+      container.find("." + this.peer.className("togetherjs-person-name-")).text(this.peer.name || "");
+      container.find("." + this.peer.className("togetherjs-person-name-abbrev-")).text(abbrev);
+      var avatarEl = container.find("." + this.peer.className("togetherjs-person-"));
+      if (this.peer.avatar) {
+        util.assertValidUrl(this.peer.avatar);
+        avatarEl.css({
+          backgroundImage: "url(" + this.peer.avatar + ")"
+        });
+      }
+      if (this.peer.idle == "inactive") {
+        avatarEl.addClass("togetherjs-person-inactive");
+      } else {
+        avatarEl.removeClass("togetherjs-person-inactive");
+      }
+      avatarEl.attr("title", this.peer.name);
+      if (this.peer.color) {
+        avatarEl.css({
+          borderColor: this.peer.color
+        });
+        avatarEl.find(".togetherjs-person-avatar-swatch").css({
+          borderTopColor: this.peer.color,
+          borderRightColor: this.peer.color
+        });
+      }
+      if (this.peer.color) {
+        var colors = container.find("." + this.peer.className("togetherjs-person-bgcolor-"));
+        colors.css({
+          backgroundColor: this.peer.color
+        });
+        colors = container.find("." + this.peer.className("togetherjs-person-bordercolor-"));
+        colors.css({
+          borderColor: this.peer.color
+        });
+      }
+      container.find("." + this.peer.className("togetherjs-person-role-"))
+        .text(this.peer.isCreator ? "Creator" : "Participant");
+      var urlName = this.peer.title || "";
+      if (this.peer.title) {
+        urlName += " (";
+      }
+      urlName += util.truncateCommonDomain(this.peer.url, location.href);
+      if (this.peer.title) {
+        urlName += ")";
+      }
+      container.find("." + this.peer.className("togetherjs-person-url-title-"))
+        .text(urlName);
+      var url = this.peer.url;
+      if (this.peer.urlHash) {
+        url += this.peer.urlHash;
+      }
+      container.find("." + this.peer.className("togetherjs-person-url-"))
+        .attr("href", url);
+      // FIXME: should have richer status:
+      container.find("." + this.peer.className("togetherjs-person-status-"))
+        .text(this.peer.idle == "active" ? "Active" : "Inactive");
+      if (this.peer.isSelf) {
+        // FIXME: these could also have consistent/reliable class names:
+        var selfName = $(".togetherjs-self-name");
+        selfName.each((function (index, el) {
+          el = $(el);
+          if (el.val() != this.peer.name) {
+            el.val(this.peer.name);
+          }
+        }).bind(this));
+        $("#togetherjs-menu-avatar").attr("src", this.peer.avatar);
+        if (! this.peer.name) {
+          $("#togetherjs-menu .togetherjs-person-name-self").text(this.peer.defaultName);
+        }
+      }
+      if (this.peer.url != session.currentUrl()) {
+        container.find("." + this.peer.className("togetherjs-person-"))
+            .addClass("togetherjs-person-other-url");
+      } else {
+        container.find("." + this.peer.className("togetherjs-person-"))
+            .removeClass("togetherjs-person-other-url");
+      }
+      if (this.peer.following) {
+        if (this.followCheckbox) {
+          this.followCheckbox.prop("checked", true);
+        }
+      } else {
+        if (this.followCheckbox) {
+          this.followCheckbox.prop("checked", false);
+        }
+      }
+      // FIXME: add some style based on following?
+      updateChatParticipantList();
+      this.updateFollow();
+    }),
+
+    update: function () {
+      if (! this.peer.isSelf) {
+        if (this.peer.status == "live") {
+          this.dock();
+        } else {
+          this.undock();
+        }
+      }
+      this.updateDisplay();
+      this.updateUrlDisplay();
+    },
+
+    updateUrlDisplay: function (force) {
+      var url = this.peer.url;
+      if ((! url) || (url == this._lastUpdateUrlDisplay && ! force)) {
+        return;
+      }
+      this._lastUpdateUrlDisplay = url;
+      var sameUrl = url == session.currentUrl();
+      ui.chat.urlChange({
+        peer: this.peer,
+        url: this.peer.url,
+        title: this.peer.title,
+        sameUrl: sameUrl
+      });
+    },
+
+    urlNudge: function () {
+      // FIXME: do something more distinct here
+      this.updateUrlDisplay(true);
+    },
+
+    notifyJoined: function () {
+      ui.chat.joinedSession({
+        peer: this.peer
+      });
+    },
+
+    // when there are too many participants in the dock, consolidate the participants to one avatar, and on mouseOver, the dock expands down to reveal the rest of the participants
+    // if there are X users in the session
+    // then hide the users in the dock
+    // and shrink the size of the dock
+    // and if you rollover the dock, it expands and reveals the rest of the participants in the dock
+
+    //if users hit X then show the participant button with the consol
+
+    dock: deferForContainer(function () {
+
+      var numberOfUsers = peers.getAllPeers().length;
+
+      // collapse the Dock if too many users
+      function CollapsedDock() {
+        // decrease/reset dock height
+        $("#togetherjs-dock").css("height", 260);
+        //replace participant button
+        $("#togetherjs-dock-participants").replaceWith("<button id='togetherjs-participantlist-button' class='togetherjs-button'><div class='togetherjs-tooltip togetherjs-dock-person-tooltip'><span class='togetherjs-person-name'>Participants</span><span class='togetherjs-person-tooltip-arrow-r'></span></div><div class='togetherjs-person togetherjs-person-status-overlay' title='Participant List' style='background-image: url(http://localhost:8888/togetherjs/images/robot-avatar.png); border-color: rgb(255, 0, 0);'></div></button>");
+        // new full participant window created on toggle
+        $("#togetherjs-participantlist-button").click(function () {
+          windowing.toggle("#togetherjs-participantlist");
+        });
+      }
+
+      // FIXME: turned off for now
+      if( numberOfUsers >= 5 && false) {
+        CollapsedDock();
+      } else {
+        // reset
+
+      }
+
+
+      if (this.dockElement) {
+        return;
+      }
+      this.dockElement = templating.sub("dock-person", {
+        peer: this.peer
+      });
+      this.dockElement.attr("id", this.peer.className("togetherjs-dock-element-"));
+      ui.container.find("#togetherjs-dock-participants").append(this.dockElement);
+      this.dockElement.find(".togetherjs-person").animateDockEntry();
+      adjustDockSize(1);
+      this.detailElement = templating.sub("participant-window", {
+        peer: this.peer
+      });
+      var followId = this.peer.className("togetherjs-person-status-follow-");
+      this.detailElement.find('[for="togetherjs-person-status-follow"]').attr("for", followId);
+      this.detailElement.find('#togetherjs-person-status-follow').attr("id", followId);
+      this.detailElement.find(".togetherjs-follow").click(function () {
+        location.href = $(this).attr("href");
+      });
+      this.detailElement.find(".togetherjs-nudge").click((function () {
+        this.peer.nudge();
+      }).bind(this));
+      this.followCheckbox = this.detailElement.find("#" + followId);
+      this.followCheckbox.change(function () {
+        if (! this.checked) {
+          this.peer.unfollow();
+        }
+        // Following doesn't happen until the window is closed
+        // FIXME: should we tell the user this?
+      });
+      this.maybeHideDetailWindow = this.maybeHideDetailWindow.bind(this);
+      session.on("hide-window", this.maybeHideDetailWindow);
+      ui.container.append(this.detailElement);
+      this.dockElement.click((function () {
+        if (this.detailElement.is(":visible")) {
+          windowing.hide(this.detailElement);
+        } else {
+          windowing.show(this.detailElement, {bind: this.dockElement});
+          this.scrollTo();
+          this.cursor().element.animate({
+            opacity:0.3
+          }).animate({
+            opacity:1
+          }).animate({
+            opacity:0.3
+          }).animate({
+            opacity:1
+          });
+        }
+      }).bind(this));
+      this.updateFollow();
+    }),
+
+    undock: function () {
+      if (! this.dockElement) {
+        return;
+      }
+      this.dockElement.animateDockExit().promise().then((function () {
+        this.dockElement.remove();
+        this.dockElement = null;
+        this.detailElement.remove();
+        this.detailElement = null;
+        adjustDockSize(-1);
+      }).bind(this));
+    },
+
+    scrollTo: function () {
+      if (this.peer.url != session.currentUrl()) {
+        return;
+      }
+      var pos = this.peer.scrollPosition;
+      if (! pos) {
+        console.warn("Peer has no scroll position:", this.peer);
+        return;
+      }
+      pos = elementFinder.pixelForPosition(pos);
+      $("html, body").easeTo(pos);
+    },
+
+    updateFollow: function () {
+      if (! this.peer.url) {
+        return;
+      }
+      if (! this.detailElement) {
+        return;
+      }
+      var same = this.detailElement.find(".togetherjs-same-url");
+      var different = this.detailElement.find(".togetherjs-different-url");
+      if (this.peer.url == session.currentUrl()) {
+        same.show();
+        different.hide();
+      } else {
+        same.hide();
+        different.show();
+      }
+    },
+
+    maybeHideDetailWindow: function (windows) {
+      if (this.detailElement && windows[0] && windows[0][0] === this.detailElement[0]) {
+        if (this.followCheckbox[0].checked) {
+          this.peer.follow();
+        } else {
+          this.peer.unfollow();
+        }
+      }
+    },
+
+    dockClick: function () {
+      // FIXME: scroll to person
+    },
+
+    cursor: function () {
+      return require("cursor").getClient(this.peer.id);
+    },
+
+    destroy: function () {
+      // FIXME: should I get rid of the dockElement?
+      session.off("hide-window", this.maybeHideDetailWindow);
+    }
+  });
+
+  function updateChatParticipantList() {
+    var live = peers.getAllPeers(true);
+    if (live.length) {
+      ui.displayToggle("#togetherjs-chat-participants");
+      $("#togetherjs-chat-participant-list").text(
+        live.map(function (p) {return p.name;}).join(", "));
+    } else {
+      ui.displayToggle("#togetherjs-chat-no-participants");
+    }
+  }
+
+  function inviteHubUrl() {
+    var base = TogetherJS.config.get("inviteFromRoom");
+    assert(base);
+    return util.makeUrlAbsolute(base, session.hubUrl());
+  }
+
+  var inRefresh = false;
+
+  function refreshInvite() {
+    if (inRefresh) {
+      return;
+    }
+    inRefresh = true;
+    require(["who"], function (who) {
+      var def = who.getList(inviteHubUrl());
+      function addUser(user, before) {
+        var item = templating.sub("invite-user-item", {peer: user});
+        item.attr("data-clientid", user.id);
+        if (before) {
+          item.insertBefore(before);
+        } else {
+          $("#togetherjs-invite-users").append(item);
+        }
+        item.click(function() {
+          invite(user.clientId);
+        });
+      }
+      function refresh(users, finished) {
+        var sorted = [];
+        for (var id in users) {
+          if (users.hasOwnProperty(id)) {
+            sorted.push(users[id]);
+          }
+        }
+        sorted.sort(function (a, b) {
+          return a.name < b.name ? -1 : 1;
+        });
+        var pos = 0;
+        ui.container.find("#togetherjs-invite-users .togetherjs-menu-item").each(function () {
+          var $this = $(this);
+          if (finished && ! users[$this.attr("data-clientid")]) {
+            $this.remove();
+            return;
+          }
+          if (pos >= sorted.length) {
+            return;
+          }
+          while (pos < sorted.length && $this.attr("data-clientid") !== sorted[pos].id) {
+            addUser(sorted[pos], $this);
+            pos++;
+          }
+          while (pos < sorted.length && $this.attr("data-clientid") == sorted[pos].id) {
+            pos++;
+          }
+        });
+        for (var i=pos; i<sorted.length; i++) {
+          addUser(sorted[pos]);
+        }
+      }
+      def.then(function (users) {
+        refresh(users, true);
+        inRefresh = false;
+      });
+      def.progress(refresh);
+    });
+  }
+
+  session.hub.on("invite", function (msg) {
+    if (msg.forClientId && msg.clientId != peers.Self.id) {
+      return;
+    }
+    require(["who"], function (who) {
+      var peer = who.ExternalPeer(msg.userInfo.clientId, msg.userInfo);
+      ui.chat.invite({peer: peer, url: msg.url, forEveryone: ! msg.forClientId});
+    });
+  });
+
+  function invite(clientId) {
+    require(["who"], function (who) {
+      // FIXME: use the return value of this to give a signal that
+      // the invite has been successfully sent:
+      who.invite(inviteHubUrl(), clientId).then(function () {
+        hideMenu();
+      });
+    });
+  }
+
+  ui.showUrlChangeMessage = deferForContainer(function (peer, url) {
+    var window = templating.sub("url-change", {peer: peer});
+    ui.container.append(window);
+    windowing.show(window);
+  });
+
+  session.hub.on("url-change-nudge", function (msg) {
+    if (msg.to && msg.to != session.clientId) {
+      // Not directed to us
+      return;
+    }
+    msg.peer.urlNudge();
+  });
+
+  session.on("new-element", function (el) {
+    if (TogetherJS.config.get("toolName")) {
+      ui.updateToolName(el);
+    }
+  });
+
+  var setToolName = false;
+  ui.updateToolName = function (container) {
+    container = container || $(document.body);
+    var name = TogetherJS.config.get("toolName");
+    if (setToolName && ! name) {
+      name = "TogetherJS";
+    }
+    if (name) {
+      container.find(".togetherjs-tool-name").text(name);
+      setToolName = true;
+    }
+  };
+
+  TogetherJS.config.track("toolName", function (name) {
+    ui.updateToolName(ui.container);
+  });
+
+  return ui;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/util.js b/v3/js/togetherjs/togetherjs/util.js
new file mode 100644
index 000000000..d0ec1f29b
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/util.js
@@ -0,0 +1,335 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery", "jqueryPlugins"], function ($) {
+  var util = {};
+
+  util.Deferred = $.Deferred;
+  TogetherJS.$ = $;
+
+  /* A simple class pattern, use like:
+
+    var Foo = util.Class({
+      constructor: function (a, b) {
+        init the class
+      },
+      otherMethod: ...
+    });
+
+  You can also give a superclass as the optional first argument.
+
+  Instantiation does not require "new"
+
+  */
+  util.Class = function (superClass, prototype) {
+    var a;
+    if (prototype === undefined) {
+      prototype = superClass;
+    } else {
+      if (superClass.prototype) {
+        superClass = superClass.prototype;
+      }
+      var newPrototype = Object.create(superClass);
+      for (a in prototype) {
+        if (prototype.hasOwnProperty(a)) {
+          newPrototype[a] = prototype[a];
+        }
+      }
+      prototype = newPrototype;
+    }
+    var ClassObject = function () {
+      var obj = Object.create(prototype);
+      obj.constructor.apply(obj, arguments);
+      obj.constructor = ClassObject;
+      return obj;
+    };
+    ClassObject.prototype = prototype;
+    if (prototype.constructor.name) {
+      ClassObject.className = prototype.constructor.name;
+      ClassObject.toString = function () {
+        return '[Class ' + this.className + ']';
+      };
+    }
+    if (prototype.classMethods) {
+      for (a in prototype.classMethods) {
+        if (prototype.classMethods.hasOwnProperty(a)) {
+          ClassObject[a] = prototype.classMethods[a];
+        }
+      }
+    }
+    return ClassObject;
+  };
+
+  /* Extends obj with other, or copies obj if no other is given. */
+  util.extend = TogetherJS._extend;
+
+  util.forEachAttr = function (obj, callback, context) {
+    context = context || obj;
+    for (var a in obj) {
+      if (obj.hasOwnProperty(a)) {
+        callback.call(context, obj[a], a);
+      }
+    }
+  };
+
+  /* Trim whitespace from a string */
+  util.trim = function trim(s) {
+    return s.replace(/^\s+/, "").replace(/\s+$/, "");
+  };
+
+  /* Convert a string into something safe to use as an HTML class name */
+  util.safeClassName = function safeClassName(name) {
+    return name.replace(/[^a-zA-Z0-9_\-]/g, "_") || "class";
+  };
+
+  util.AssertionError = function (message) {
+    if (! this instanceof util.AssertionError) {
+      return new util.AssertionError(message);
+    }
+    this.message = message;
+    this.name = "AssertionError";
+  };
+  util.AssertionError.prototype = Error.prototype;
+
+  util.assert = function (cond) {
+    if (! cond) {
+      var args = ["Assertion error:"].concat(Array.prototype.slice.call(arguments, 1));
+      console.error.apply(console, args);
+      if (console.trace) {
+        console.trace();
+      }
+      throw new util.AssertionError(args.join(" "));
+    }
+  };
+
+  /* Generates a random ID */
+  util.generateId = function (length) {
+    length = length || 10;
+    var letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV0123456789';
+    var s = '';
+    for (var i=0; i<length; i++) {
+      s += letters.charAt(Math.floor(Math.random() * letters.length));
+    }
+    return s;
+  };
+
+  util.pickRandom = function (array) {
+    return array[Math.floor(Math.random() * array.length)];
+  };
+
+  util.mixinEvents = TogetherJS._mixinEvents;
+
+  util.Module = util.Class({
+    constructor: function (name) {
+      this._name = name;
+    },
+    toString: function () {
+      return '[Module ' + this._name + ']';
+    }
+  });
+
+  util.blobToBase64 = function (blob) {
+    // Oh this is just terrible
+    var binary = '';
+    var bytes = new Uint8Array(blob);
+    var len = bytes.byteLength;
+    for (var i=0; i<len; i++) {
+      binary += String.fromCharCode(bytes[i]);
+    }
+    return btoa(binary);
+  };
+
+  util.truncateCommonDomain = function (url, base) {
+    /* Remove the scheme and domain from url, if it matches the scheme and domain
+       of base */
+    if (! base) {
+      return url;
+    }
+    var regex = /^https?:\/\/[^\/]*/i;
+    var match = regex.exec(url);
+    var matchBase = regex.exec(base);
+    if (match && matchBase && match[0] == matchBase[0]) {
+      // There is a common scheme and domain
+      return url.substr(match[0].length);
+    }
+    return url;
+  };
+
+  util.makeUrlAbsolute = function (url, base) {
+    if (url.search(/^(http|https|ws|wss):/i) === 0) {
+      // Absolute URL
+      return url;
+    }
+    if (url.search(/^\/\/[^\/]/) === 0) {
+      var scheme = (/^(http|https|ws|wss):/i).exec(base);
+      util.assert(scheme, "No scheme on base URL", base);
+      return scheme[1] + ":" + url;
+    }
+    if (url.search(/^\//) === 0) {
+      var domain = (/^(http|https|ws|wss):\/\/[^\/]+/i).exec(base);
+      util.assert(domain, "No scheme/domain on base URL", base);
+      return domain[0] + url;
+    }
+    var last = (/[^\/]+$/).exec(base);
+    util.assert(last, "Does not appear to be a URL?", base);
+    var lastBase = base.substr(0, last.index);
+    return lastBase + url;
+  };
+
+  util.assertValidUrl = function (url) {
+    /* This does some simple assertions that the url is valid:
+       - it must be a string
+       - it must be http(s)://... or data:...
+       - it must not contain a space, quotation, or close paren
+    */
+    util.assert(typeof url == "string", "URLs must be a string:", url);
+    util.assert(url.search(/^(http:\/\/|https:\/\/|\/\/|data:)/i) === 0,
+                "URL must have an http, https, data, or // scheme:", url);
+    util.assert(url.search(/[\)\'\"\ ]/) === -1,
+                "URLs cannot contain ), ', \", or spaces:", JSON.stringify(url));
+  };
+
+  util.resolver = function (deferred, func) {
+    util.assert(deferred.then, "Bad deferred:", deferred);
+    util.assert(typeof func == "function", "Not a function:", func);
+    return function () {
+      var result;
+      try {
+        result = func.apply(this, arguments);
+      } catch (e) {
+        deferred.reject(e);
+        throw e;
+      }
+      if (result && result.then) {
+        result.then(function () {
+          deferred.resolveWith(this, arguments);
+        }, function () {
+          deferred.rejectWith(this, arguments);
+        });
+        // FIXME: doesn't pass progress through
+      } else if (result === undefined) {
+        deferred.resolve();
+      } else {
+        deferred.resolve(result);
+      }
+      return result;
+    };
+  };
+
+  /* Detects if a value is a promise.  Right now the presence of a
+     `.then()` method is the best we can do.
+  */
+  util.isPromise = function (obj) {
+    return typeof obj == "object" && obj.then;
+  };
+
+  /* Makes a value into a promise, by returning an already-resolved
+     promise if a non-promise objectx is given.
+  */
+  util.makePromise = function (obj) {
+    if (util.isPromise(obj)) {
+      return obj;
+    } else {
+      return $.Deferred(function (def) {
+        def.resolve(obj);
+      });
+    }
+  };
+
+  /* Resolves several promises (the promises are the arguments to the function)
+     or the first argument may be an array of promises.
+
+     Returns a promise that will resolve with the results of all the
+     promises.  If any promise fails then the returned promise fails.
+
+     FIXME: if a promise has more than one return value (like with
+     promise.resolve(a, b)) then the latter arguments will be lost.
+     */
+  util.resolveMany = function () {
+    var args;
+    var oneArg = false;
+    if (arguments.length == 1 && Array.isArray(arguments[0])) {
+      oneArg = true;
+      args = arguments[0];
+    } else {
+      args = Array.prototype.slice.call(arguments);
+    }
+    return util.Deferred(function (def) {
+      var count = args.length;
+      if (! count) {
+        def.resolve();
+        return;
+      }
+      var allResults = [];
+      var anyError = false;
+      args.forEach(function (arg, index) {
+        arg.then(function (result) {
+          allResults[index] = result;
+          count--;
+          check();
+        }, function (error) {
+          allResults[index] = error;
+          anyError = true;
+          count--;
+          check();
+        });
+      });
+      function check() {
+        if (! count) {
+          if (anyError) {
+            if (oneArg) {
+              def.reject(allResults);
+            } else {
+              def.reject.apply(def, allResults);
+            }
+          } else {
+            if (oneArg) {
+              def.resolve(allResults);
+            } else {
+              def.resolve.apply(def, allResults);
+            }
+          }
+        }
+      }
+    });
+  };
+
+  util.readFileImage = function (el) {
+    return util.Deferred(function (def) {
+      var reader = new FileReader();
+      reader.onload = function () {
+        def.resolve("data:image/jpeg;base64," + util.blobToBase64(this.result));
+      };
+      reader.onerror = function () {
+        def.reject(this.error);
+      };
+      reader.readAsArrayBuffer(el.files[0]);
+    });
+  };
+
+  util.matchElement = function(el, selector) {
+    var res = selector;
+    if (selector === true || ! selector) {
+      return !!selector;
+    }
+    try {
+      return $(el).is(selector);
+    } catch (e) {
+      console.warn("Bad selector:", selector, "error:", e);
+      return false;
+    }
+
+  };
+
+  util.testExpose = function (objs) {
+    if (typeof TogetherJSTestSpy == "undefined") {
+      return;
+    }
+    util.forEachAttr(objs, function (value, attr) {
+      TogetherJSTestSpy[attr] = value;
+    });
+  };
+
+  return util;
+});
diff --git a/v3/js/togetherjs/togetherjs/videos.js b/v3/js/togetherjs/togetherjs/videos.js
new file mode 100644
index 000000000..92ea4bbc6
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/videos.js
@@ -0,0 +1,123 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["jquery", "util", "session", "elementFinder"],
+function ($, util, session, elementFinder) {
+
+  var listeners = [];
+
+  var TIME_UPDATE = 'timeupdate';
+  var MIRRORED_EVENTS = ['play', 'pause'];
+
+  var TOO_FAR_APART = 3000;
+
+  session.on("reinitialize", function () {
+    unsetListeners();
+    setupListeners();
+  });
+
+  session.on("ui-ready", setupListeners);
+
+  function setupListeners() {
+    var videos = $('video');
+    setupMirroredEvents(videos);
+    setupTimeSync(videos);
+  }
+
+  function setupMirroredEvents(videos) {
+    var currentListener;
+    MIRRORED_EVENTS.forEach(function (eventName) {
+      currentListener = makeEventSender(eventName);
+      videos.on(eventName, currentListener);
+      listeners.push({
+        name: eventName,
+        listener: currentListener
+      });
+    });
+  }
+
+  function makeEventSender(eventName) {
+    return function (event, options) {
+      var element = event.target;
+      options || (options = {});
+      if (!options.silent) {
+        session.send({
+          type: ('video-'+eventName),
+          location: elementFinder.elementLocation(element),
+          position: element.currentTime
+        });
+      }
+    };
+  }
+
+  function setupTimeSync(videos) {
+    videos.each(function(i, video) {
+      var onTimeUpdate = makeTimeUpdater();
+      $(video).on(TIME_UPDATE, onTimeUpdate);
+      listeners.push({
+        name: TIME_UPDATE,
+        listener: onTimeUpdate
+      });
+    });
+  }
+
+  function makeTimeUpdater() {
+    var last = 0;
+    return function (event) {
+      var currentTime = event.target.currentTime;
+      if(areTooFarApart(currentTime, last)){
+        makeEventSender(TIME_UPDATE)(event);
+      }
+      last = currentTime;
+    };
+  }
+
+  function areTooFarApart(currentTime, lastTime) {
+    var secDiff = Math.abs(currentTime - lastTime);
+    var milliDiff = secDiff * 1000;
+    return milliDiff > TOO_FAR_APART;
+  }
+
+  session.on("close", unsetListeners);
+
+  function unsetListeners() {
+    var videos = $('video');
+    listeners.forEach(function (event) {
+        videos.off(event.name, event.listener);
+    });
+    listeners = [];
+  }
+
+
+  session.hub.on('video-timeupdate', function (msg) {
+    var element = $findElement(msg.location);
+    var oldTime = element.prop('currentTime');
+    var newTime = msg.position;
+
+    //to help throttle uneccesary position changes
+    if(areTooFarApart(oldTime, newTime)){
+      setTime(element, msg.position);
+    }
+  });
+
+  MIRRORED_EVENTS.forEach( function (eventName) {
+    session.hub.on("video-"+eventName, function (msg) {
+      var element = $findElement(msg.location);
+
+      setTime(element, msg.position);
+
+      element.trigger(eventName, {silent: true});
+    });
+  });
+
+  //Currently does not discriminate between visible and invisible videos
+  function $findElement(location) {
+    return $(elementFinder.findElement(location));
+  }
+
+  function setTime(video, time) {
+    video.prop('currentTime', time);
+  }
+
+});
diff --git a/v3/js/togetherjs/togetherjs/visibilityApi.js b/v3/js/togetherjs/togetherjs/visibilityApi.js
new file mode 100644
index 000000000..6d4b6ce94
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/visibilityApi.js
@@ -0,0 +1,46 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* Loading this module will cause, when TogetherJS is active, the
+   session object to emit visibility-change with a `hidden` argument
+   whenever the visibility changes, on browsers where we can detect
+   it.
+   */
+
+define(["util", "session"], function (util, session) {
+  var visibilityApi = util.Module("visibilityApi");
+  var hidden;
+  var visibilityChange;
+  if (document.hidden !== undefined) { // Opera 12.10 and Firefox 18 and later support
+    hidden = "hidden";
+    visibilityChange = "visibilitychange";
+  } else if (document.mozHidden !== undefined) {
+    hidden = "mozHidden";
+    visibilityChange = "mozvisibilitychange";
+  } else if (document.msHidden !== undefined) {
+    hidden = "msHidden";
+    visibilityChange = "msvisibilitychange";
+  } else if (document.webkitHidden !== undefined) {
+    hidden = "webkitHidden";
+    visibilityChange = "webkitvisibilitychange";
+  }
+
+  session.on("start", function () {
+    document.addEventListener(visibilityChange, change, false);
+  });
+
+  session.on("close", function () {
+    document.removeEventListener(visibilityChange, change, false);
+  });
+
+  function change() {
+    session.emit("visibility-change", document[hidden]);
+  }
+
+  visibilityApi.hidden = function () {
+    return document[hidden];
+  };
+
+  return visibilityApi;
+});
diff --git a/v3/js/togetherjs/togetherjs/walkabout.html b/v3/js/togetherjs/togetherjs/walkabout.html
new file mode 100644
index 000000000..24c109107
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/walkabout.html
@@ -0,0 +1,5 @@
+<div class="togetherjs-status"></div>
+<!--
+This is used to show the walkabout.js test status (in chat.js).  Right
+now a string is just inserted into .togetherjs-status
+-->
diff --git a/v3/js/togetherjs/togetherjs/walkthrough.html b/v3/js/togetherjs/togetherjs/walkthrough.html
new file mode 100644
index 000000000..a5aeb732e
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/walkthrough.html
@@ -0,0 +1,90 @@
+<!--
+    Any elements with .togetherjs-walkthrough-firsttime will only be
+    displayed on during the first-time experience.  Any elements with
+    .togetherjs-walkthrough-not-firsttime will only be displayed when
+    the walkthrough is accessed through the Help menu.
+
+    Note you *cannot* use <section class="togetherjs-walkthrough-slide
+    togetherjs-walkthrough-firsttime">: the number of sections must be the
+    same regardless.
+  -->
+<div id="togetherjs-walkthrough" class="togetherjs-modal togetherjs-modal-wide">
+  <header>{{ gettext( "You're using TOOL_NAME!" ) }}<button class="togetherjs-close"></button></header>
+
+  <div id="togetherjs-walkthrough-previous"></div>
+  <div id="togetherjs-walkthrough-next"></div>
+
+  <section class="togetherjs-walkthrough-slide">
+    <p class="togetherjs-walkthrough-main-image"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-intro.png"></p>
+	<p>{{ gettext( "TOOL_NAME is a service for your website that makes it easy to collaborate in real-time on SITE_NAME") }} </p>
+  </section>
+
+  <section class="togetherjs-walkthrough-slide">
+    <div class="togetherjs-walkthrough-firsttime">
+      <div class="togetherjs-walkthrough-main-image">
+        <div class="togetherjs-walkthrough-avatar-section">
+          <div class="togetherjs-avatar-preview togetherjs-person togetherjs-person-self"></div>
+          <div class="togetherjs-avatar-upload-input"><input type="file" class="togetherjs-upload-avatar"></div>
+        </div>
+        <input class="togetherjs-self-name" type="text" placeholder="{{ gettext( "Enter your name" ) }}">
+        <div class="togetherjs-swatch togetherjs-person-bgcolor-self"></div>
+        <div class="togetherjs-save-settings">
+          <button class="togetherjs-avatar-save togetherjs-primary">
+            <span id="togetherjs-avatar-when-unsaved">""{{ gettext("Save") }}""</span>
+            <span id="togetherjs-avatar-when-saved" style="display: none">{{ gettext("Saved!") }}</span>
+          </button>
+        </div>
+      </div>
+      <p>{{ gettext( "Set up your avatar, name and user color above.  If you'd like to update it later, you can click your Profile button.") }}</p>
+    </div>
+    <div class="togetherjs-walkthrough-not-firsttime">
+      <p class="togetherjs-walkthrough-main-image"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-profile.png"></p>
+      <p>{{ gettext( "Change your avatar, name and user color using the Profile button." ) }}</p>
+    </div>
+  </section>
+
+  <section class="togetherjs-walkthrough-slide">
+    <p class="togetherjs-walkthrough-main-image togetherjs-ifnot-creator"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-invite.png">
+    </p>
+    <p class="togetherjs-ifnot-creator">{{ gettext( "You can invite more friends to the session by sending the invite link in the TOOL_NAME dock." ) }}</p>
+    <p class="togetherjs-walkthrough-main-image togetherjs-if-creator">
+      <span class="togetherjs-walkthrough-sendlink">
+        {{ gettext( "Copy and paste this link into IM or email to invite friends." ) }}
+      </span>
+      <input type="text" class="togetherjs-share-link">
+    </p>
+    <p class="togetherjs-if-creator">{{ gettext("Send the above link to a friend so they can join your session!  You can find this invite link on the TOOL_NAME dock as well.") }}</p>
+  </section>
+
+  <section class="togetherjs-walkthrough-slide">
+    <p class="togetherjs-walkthrough-main-image"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-participant.png"></p>
+    <p>{{ gettext( "Friends who join your TOOL_NAME session will appear here.  You can click their avatars to see more." ) }}</p>
+  </section>
+
+  <section class="togetherjs-walkthrough-slide">
+    <p class="togetherjs-walkthrough-main-image"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-chat.png"></p>
+    <p>{{ gettext( "When your friends join you in your TOOL_NAME session, you can chat with them here!" ) }}</p>
+  </section>
+
+  <section class="togetherjs-walkthrough-slide">
+    <p class="togetherjs-walkthrough-main-image"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-rtc.png"></p>
+    <p>{{ gettext( "If your browser supports it, click the microphone icon to begin a audio chat. Learn more about this experimental feature <a href=\"https://github.com/mozilla/togetherjs/wiki/About-Audio-Chat-and-WebRTC\" target=\"_blank\">here</a>." ) }}</p>
+  </section>
+
+  <section class="togetherjs-walkthrough-slide">
+    <p class="togetherjs-walkthrough-main-image"><img src="http://localhost:8080/togetherjs/images/walkthrough-images-logo.png"></p>
+    <p>{{ gettext( "Alright, you're ready to use TOOL_NAME. Now start collaborating on SITE_NAME!" ) }}</p>
+  </section>
+
+  <div style="display: none">
+    <!-- There is one of these created for each slide: -->
+    <span id="togetherjs-template-walkthrough-slide-progress" class="togetherjs-walkthrough-slide-progress">&#9679;</span>
+  </div>
+  <section id="togetherjs-walkthrough-progress">
+  </section>
+
+  <section class="togetherjs-buttons">
+    <button class="togetherjs-primary togetherjs-dismiss">{{ gettext( "I'm ready!" )}}</button>
+  </section>
+
+</div><!-- /.togetherjs-modal -->
diff --git a/v3/js/togetherjs/togetherjs/walkthrough.js b/v3/js/togetherjs/togetherjs/walkthrough.js
new file mode 100644
index 000000000..9acd32236
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/walkthrough.js
@@ -0,0 +1,151 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+define(["util", "ui", "jquery", "windowing", "templates", "templating", "session", "peers"], function (util, ui, $, windowing, templates, templating, session, peers) {
+  var assert = util.assert;
+  var walkthrough = util.Module("walkthrough");
+  var onHideAll = null;
+  var container = null;
+
+  var slides = null;
+
+  walkthrough.start = function (firstTime, doneCallback) {
+    if (! container) {
+      container = $(templates("walkthrough"));
+      container.hide();
+      ui.container.append(container);
+      slides = container.find(".togetherjs-walkthrough-slide");
+      slides.hide();
+      var progress = $("#togetherjs-walkthrough-progress");
+      slides.each(function (index) {
+        var bullet = templating.sub("walkthrough-slide-progress");
+        progress.append(bullet);
+        bullet.click(function () {
+          show(index);
+        });
+      });
+      container.find("#togetherjs-walkthrough-previous").click(previous);
+      container.find("#togetherjs-walkthrough-next").click(next);
+      ui.prepareShareLink(container);
+      container.find(".togetherjs-self-name").bind("keyup", function (event) {
+        var val = $(event.target).val();
+        peers.Self.update({name: val});
+      });
+      container.find(".togetherjs-swatch").click(function () {
+        var picker = $("#togetherjs-pick-color");
+        if (picker.is(":visible")) {
+          picker.hide();
+          return;
+        }
+        picker.show();
+        picker.find(".togetherjs-swatch-active").removeClass("togetherjs-swatch-active");
+        picker.find(".togetherjs-swatch[data-color=\"" + peers.Self.color + "\"]").addClass("togetherjs-swatch-active");
+        var location = container.find(".togetherjs-swatch").offset();
+        picker.css({
+          top: location.top,
+          // The -7 comes out of thin air, but puts it in the right place:
+          left: location.left-7
+        });
+      });
+      if (session.isClient) {
+        container.find(".togetherjs-if-creator").remove();
+        container.find(".togetherjs-ifnot-creator").show();
+      } else {
+        container.find(".togetherjs-if-creator").show();
+        container.find(".togetherjs-ifnot-creator").remove();
+      }
+      TogetherJS.config.track("siteName", function (value) {
+        value = value || document.title;
+        container.find(".togetherjs-site-name").text(value);
+      });
+      ui.activateAvatarEdit(container, {
+        onSave: function () {
+          container.find("#togetherjs-avatar-when-saved").show();
+          container.find("#togetherjs-avatar-when-unsaved").hide();
+        },
+        onPending: function () {
+          container.find("#togetherjs-avatar-when-saved").hide();
+          container.find("#togetherjs-avatar-when-unsaved").show();
+        }
+      });
+      // This triggers substititions in the walkthrough:
+      peers.Self.update({});
+      session.emit("new-element", container);
+    }
+    assert(typeof firstTime == "boolean", "You must provide a firstTime boolean parameter");
+    if (firstTime) {
+      container.find(".togetherjs-walkthrough-firsttime").show();
+      container.find(".togetherjs-walkthrough-not-firsttime").hide();
+    } else {
+      container.find(".togetherjs-walkthrough-firsttime").hide();
+      container.find(".togetherjs-walkthrough-not-firsttime").show();
+    }
+    onHideAll = doneCallback;
+    show(0);
+    windowing.show(container);
+  };
+
+  function show(index) {
+    slides.hide();
+    $(slides[index]).show();
+    var bullets = container.find("#togetherjs-walkthrough-progress .togetherjs-walkthrough-slide-progress");
+    bullets.removeClass("togetherjs-active");
+    $(bullets[index]).addClass("togetherjs-active");
+    var $next = $("#togetherjs-walkthrough-next").removeClass("togetherjs-disabled");
+    var $previous = $("#togetherjs-walkthrough-previous").removeClass("togetherjs-disabled");
+    if (index == slides.length - 1) {
+      $next.addClass("togetherjs-disabled");
+    } else if (index === 0) {
+      $previous.addClass("togetherjs-disabled");
+    }
+  }
+
+  function previous() {
+    var index = getIndex();
+    index--;
+    if (index < 0) {
+      index = 0;
+    }
+    show(index);
+  }
+
+  function next() {
+    var index = getIndex();
+    index++;
+    if (index >= slides.length) {
+      index = slides.length-1;
+    }
+    show(index);
+  }
+
+  function getIndex() {
+    var active = slides.filter(":visible");
+    if (! active.length) {
+      return 0;
+    }
+    for (var i=0; i<slides.length; i++) {
+      if (slides[i] == active[0]) {
+        return i;
+      }
+    }
+    return 0;
+  }
+
+  walkthrough.stop = function () {
+    windowing.hide(container);
+    if (onHideAll) {
+      onHideAll();
+      onHideAll = null;
+    }
+  };
+
+  session.on("hide-window", function () {
+    if (onHideAll) {
+      onHideAll();
+      onHideAll = null;
+    }
+  });
+
+  return walkthrough;
+});
diff --git a/v3/js/togetherjs/togetherjs/webrtc.js b/v3/js/togetherjs/togetherjs/webrtc.js
new file mode 100644
index 000000000..2c0d3f76c
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/webrtc.js
@@ -0,0 +1,578 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// WebRTC support -- Note that this relies on parts of the interface code that usually goes in ui.js
+
+define(["require", "jquery", "util", "session", "ui", "peers", "storage", "windowing"], function (require, $, util, session, ui, peers, storage, windowing) {
+  var webrtc = util.Module("webrtc");
+  var assert = util.assert;
+
+  session.RTCSupported = !!(window.mozRTCPeerConnection ||
+                            window.webkitRTCPeerConnection ||
+                            window.RTCPeerConnection);
+
+  if (session.RTCSupported && $.browser.mozilla && parseInt($.browser.version, 10) <= 19) {
+    // In a few versions of Firefox (18 and 19) these APIs are present but
+    // not actually usable
+    // See: https://bugzilla.mozilla.org/show_bug.cgi?id=828839
+    // Because they could be pref'd on we'll do a quick check:
+    try {
+      (function () {
+        var conn = new window.mozRTCPeerConnection();
+      })();
+    } catch (e) {
+      session.RTCSupported = false;
+    }
+  }
+
+  var mediaConstraints = {
+    mandatory: {
+      OfferToReceiveAudio: true,
+      OfferToReceiveVideo: false
+    }
+  };
+  if (window.mozRTCPeerConnection) {
+    mediaConstraints.mandatory.MozDontOfferDataChannel = true;
+  }
+
+  var URL = window.webkitURL || window.URL;
+  var RTCSessionDescription = window.mozRTCSessionDescription || window.webkitRTCSessionDescription || window.RTCSessionDescription;
+  var RTCIceCandidate = window.mozRTCIceCandidate || window.webkitRTCIceCandidate || window.RTCIceCandidate;
+
+  function makePeerConnection() {
+    // Based roughly off: https://github.com/firebase/gupshup/blob/gh-pages/js/chat.js
+    if (window.webkitRTCPeerConnection) {
+      return new webkitRTCPeerConnection({
+        "iceServers": [{"url": "stun:stun.l.google.com:19302"}]
+      }, {
+        "optional": [{"DtlsSrtpKeyAgreement": true}]
+      });
+    }
+    if (window.mozRTCPeerConnection) {
+      return new mozRTCPeerConnection({
+        // Or stun:124.124.124..2 ?
+        "iceServers": [{"url": "stun:23.21.150.121"}]
+      }, {
+        "optional": []
+      });
+    }
+    throw new util.AssertionError("Called makePeerConnection() without supported connection");
+  }
+
+  function ensureCryptoLine(sdp) {
+    if (! window.mozRTCPeerConnection) {
+      return sdp;
+    }
+
+    var sdpLinesIn = sdp.split('\r\n');
+    var sdpLinesOut = [];
+
+    // Search for m line.
+    for (var i = 0; i < sdpLinesIn.length; i++) {
+      sdpLinesOut.push(sdpLinesIn[i]);
+      if (sdpLinesIn[i].search('m=') !== -1) {
+        sdpLinesOut.push("a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA");
+      }
+    }
+
+    sdp = sdpLinesOut.join('\r\n');
+    return sdp;
+  }
+
+  function getUserMedia(options, success, failure) {
+    failure = failure || function (error) {
+      console.error("Error in getUserMedia:", error);
+    };
+    (navigator.getUserMedia ||
+     navigator.mozGetUserMedia ||
+     navigator.webkitGetUserMedia ||
+     navigator.msGetUserMedia).call(navigator, options, success, failure);
+  }
+
+  /****************************************
+   * getUserMedia Avatar support
+   */
+
+  session.on("ui-ready", function () {
+    $("#togetherjs-self-avatar").click(function () {
+      var avatar = peers.Self.avatar;
+      if (avatar) {
+        $preview.attr("src", avatar);
+      }
+      ui.displayToggle("#togetherjs-avatar-edit");
+    });
+    if (! session.RTCSupported) {
+      $("#togetherjs-avatar-edit-rtc").hide();
+    }
+
+    var avatarData = null;
+    var $preview = $("#togetherjs-self-avatar-preview");
+    var $accept = $("#togetherjs-self-avatar-accept");
+    var $cancel = $("#togetherjs-self-avatar-cancel");
+    var $takePic = $("#togetherjs-avatar-use-camera");
+    var $video = $("#togetherjs-avatar-video");
+    var $upload = $("#togetherjs-avatar-upload");
+
+    $takePic.click(function () {
+      if (! streaming) {
+        startStreaming();
+        return;
+      }
+      takePicture();
+    });
+
+    function savePicture(dataUrl) {
+      avatarData = dataUrl;
+      $preview.attr("src", avatarData);
+      $accept.attr("disabled", null);
+    }
+
+    $accept.click(function () {
+      peers.Self.update({avatar:  avatarData});
+      ui.displayToggle("#togetherjs-no-avatar-edit");
+      // FIXME: these probably shouldn't be two elements:
+      $("#togetherjs-participants-other").show();
+      $accept.attr("disabled", "1");
+    });
+
+    $cancel.click(function () {
+      ui.displayToggle("#togetherjs-no-avatar-edit");
+      // FIXME: like above:
+      $("#togetherjs-participants-other").show();
+    });
+
+    var streaming = false;
+    function startStreaming() {
+      getUserMedia({
+          video: true,
+          audio: false
+        },
+        function(stream) {
+          streaming = true;
+          $video[0].src = URL.createObjectURL(stream);
+          $video[0].play();
+        },
+        function(err) {
+          // FIXME: should pop up help or something in the case of a user
+          // cancel
+          console.error("getUserMedia error:", err);
+        }
+      );
+    }
+
+    function takePicture() {
+      assert(streaming);
+      var height = $video[0].videoHeight;
+      var width = $video[0].videoWidth;
+      width = width * (session.AVATAR_SIZE / height);
+      height = session.AVATAR_SIZE;
+      var $canvas = $("<canvas>");
+      $canvas[0].height = session.AVATAR_SIZE;
+      $canvas[0].width = session.AVATAR_SIZE;
+      var context = $canvas[0].getContext("2d");
+      context.arc(session.AVATAR_SIZE/2, session.AVATAR_SIZE/2, session.AVATAR_SIZE/2, 0, Math.PI*2);
+      context.closePath();
+      context.clip();
+      context.drawImage($video[0], (session.AVATAR_SIZE - width) / 2, 0, width, height);
+      savePicture($canvas[0].toDataURL("image/png"));
+    }
+
+    $upload.on("change", function () {
+      var reader = new FileReader();
+      reader.onload = function () {
+        // FIXME: I don't actually know it's JPEG, but it's probably a
+        // good enough guess:
+        var url = "data:image/jpeg;base64," + util.blobToBase64(this.result);
+        convertImage(url, function (result) {
+          savePicture(result);
+        });
+      };
+      reader.onerror = function () {
+        console.error("Error reading file:", this.error);
+      };
+      reader.readAsArrayBuffer(this.files[0]);
+    });
+
+    function convertImage(imageUrl, callback) {
+      var $canvas = $("<canvas>");
+      $canvas[0].height = session.AVATAR_SIZE;
+      $canvas[0].width = session.AVATAR_SIZE;
+      var context = $canvas[0].getContext("2d");
+      var img = new Image();
+      img.src = imageUrl;
+      // Sometimes the DOM updates immediately to call
+      // naturalWidth/etc, and sometimes it doesn't; using setTimeout
+      // gives it a chance to catch up
+      setTimeout(function () {
+        var width = img.naturalWidth || img.width;
+        var height = img.naturalHeight || img.height;
+        width = width * (session.AVATAR_SIZE / height);
+        height = session.AVATAR_SIZE;
+        context.drawImage(img, 0, 0, width, height);
+        callback($canvas[0].toDataURL("image/png"));
+      });
+    }
+
+  });
+
+  /****************************************
+   * RTC support
+   */
+
+  function audioButton(selector) {
+    ui.displayToggle(selector);
+    if (selector == "#togetherjs-audio-incoming") {
+      $("#togetherjs-audio-button").addClass("togetherjs-animated").addClass("togetherjs-color-alert");
+    } else {
+      $("#togetherjs-audio-button").removeClass("togetherjs-animated").removeClass("togetherjs-color-alert");
+    }
+  }
+
+  session.on("ui-ready", function () {
+    $("#togetherjs-audio-button").click(function () {
+      if ($("#togetherjs-rtc-info").is(":visible")) {
+        windowing.hide();
+        return;
+      }
+      if (session.RTCSupported) {
+        enableAudio();
+      } else {
+        windowing.show("#togetherjs-rtc-not-supported");
+      }
+    });
+
+    if (! session.RTCSupported) {
+      audioButton("#togetherjs-audio-unavailable");
+      return;
+    }
+    audioButton("#togetherjs-audio-ready");
+
+    var audioStream = null;
+    var accepted = false;
+    var connected = false;
+    var $audio = $("#togetherjs-audio-element");
+    var offerSent = null;
+    var offerReceived = null;
+    var offerDescription = false;
+    var answerSent = null;
+    var answerReceived = null;
+    var answerDescription = false;
+    var _connection = null;
+    var iceCandidate = null;
+
+    function enableAudio() {
+      accepted = true;
+      storage.settings.get("dontShowRtcInfo").then(function (dontShow) {
+        if (! dontShow) {
+          windowing.show("#togetherjs-rtc-info");
+        }
+      });
+      if (! audioStream) {
+        startStreaming(connect);
+        return;
+      }
+      if (! connected) {
+        connect();
+      }
+      toggleMute();
+    }
+
+    ui.container.find("#togetherjs-rtc-info .togetherjs-dont-show-again").change(function () {
+      storage.settings.set("dontShowRtcInfo", this.checked);
+    });
+
+    function error() {
+      console.warn.apply(console, arguments);
+      var s = "";
+      for (var i=0; i<arguments.length; i++) {
+        if (s) {
+          s += " ";
+        }
+        var a = arguments[i];
+        if (typeof a == "string") {
+          s += a;
+        } else {
+          var repl;
+          try {
+            repl = JSON.stringify(a);
+          } catch (e) {
+          }
+          if (! repl) {
+            repl = "" + a;
+          }
+          s += repl;
+        }
+      }
+      audioButton("#togetherjs-audio-error");
+      // FIXME: this title doesn't seem to display?
+      $("#togetherjs-audio-error").attr("title", s);
+    }
+
+    function startStreaming(callback) {
+      getUserMedia(
+        {
+          video: false,
+          audio: true
+        },
+        function (stream) {
+          audioStream = stream;
+          attachMedia("#togetherjs-local-audio", stream);
+          if (callback) {
+            callback();
+          }
+        },
+        function (err) {
+          // FIXME: handle cancel case
+          if (err && err.code == 1) {
+            // User cancel
+            return;
+          }
+          error("getUserMedia error:", err);
+        }
+      );
+    }
+
+    function attachMedia(element, media) {
+      element = $(element)[0];
+      console.log("Attaching", media, "to", element);
+      if (window.mozRTCPeerConnection) {
+        element.mozSrcObject = media;
+        element.play();
+      } else {
+        element.autoplay = true;
+        element.src = URL.createObjectURL(media);
+      }
+    }
+
+    function getConnection() {
+      assert(audioStream);
+      if (_connection) {
+        return _connection;
+      }
+      try {
+        _connection = makePeerConnection();
+      } catch (e) {
+        error("Error creating PeerConnection:", e);
+        throw e;
+      }
+      _connection.onaddstream = function (event) {
+        console.log("got event", event, event.type);
+        attachMedia($audio, event.stream);
+        audioButton("#togetherjs-audio-active");
+      };
+      _connection.onstatechange = function () {
+        // FIXME: this doesn't seem to work:
+        // Actually just doesn't work on Firefox
+        console.log("state change", _connection.readyState);
+        if (_connection.readyState == "closed") {
+          audioButton("#togetherjs-audio-ready");
+        }
+      };
+      _connection.onicecandidate = function (event) {
+        if (event.candidate) {
+          session.send({
+            type: "rtc-ice-candidate",
+            candidate: {
+              sdpMLineIndex: event.candidate.sdpMLineIndex,
+              sdpMid: event.candidate.sdpMid,
+              candidate: event.candidate.candidate
+            }
+          });
+        }
+      };
+      _connection.addStream(audioStream);
+      return _connection;
+    }
+
+    function addIceCandidate() {
+      if (iceCandidate) {
+        console.log("adding ice", iceCandidate);
+        _connection.addIceCandidate(new RTCIceCandidate(iceCandidate));
+      }
+    }
+
+    function connect() {
+      var connection = getConnection();
+      if (offerReceived && (! offerDescription)) {
+        connection.setRemoteDescription(
+          new RTCSessionDescription({
+            type: "offer",
+            sdp: offerReceived
+          }),
+          function () {
+            offerDescription = true;
+            addIceCandidate();
+            connect();
+          },
+          function (err) {
+            error("Error doing RTC setRemoteDescription:", err);
+          }
+        );
+        return;
+      }
+      if (! (offerSent || offerReceived)) {
+        connection.createOffer(function (offer) {
+          console.log("made offer", offer);
+          offer.sdp = ensureCryptoLine(offer.sdp);
+          connection.setLocalDescription(
+            offer,
+            function () {
+              session.send({
+                type: "rtc-offer",
+                offer: offer.sdp
+              });
+              offerSent = offer;
+              audioButton("#togetherjs-audio-outgoing");
+            },
+            function (err) {
+              error("Error doing RTC setLocalDescription:", err);
+            },
+            mediaConstraints
+          );
+        }, function (err) {
+          error("Error doing RTC createOffer:", err);
+        });
+      } else if (! (answerSent || answerReceived)) {
+        // FIXME: I might have only needed this due to my own bugs, this might
+        // not actually time out
+        var timeout = setTimeout(function () {
+          if (! answerSent) {
+            error("createAnswer Timed out; reload or restart browser");
+          }
+        }, 2000);
+        connection.createAnswer(function (answer) {
+          answer.sdp = ensureCryptoLine(answer.sdp);
+          clearTimeout(timeout);
+          connection.setLocalDescription(
+            answer,
+            function () {
+              session.send({
+                type: "rtc-answer",
+                answer: answer.sdp
+              });
+              answerSent = answer;
+            },
+            function (err) {
+              clearTimeout(timeout);
+              error("Error doing RTC setLocalDescription:", err);
+            },
+            mediaConstraints
+          );
+        }, function (err) {
+          error("Error doing RTC createAnswer:", err);
+        });
+      }
+    }
+
+    function toggleMute() {
+      // FIXME: implement.  Actually, wait for this to be implementable - currently
+      // muting of localStreams isn't possible
+      // FIXME: replace with hang-up?
+    }
+
+    session.hub.on("rtc-offer", function (msg) {
+      if (offerReceived || answerSent || answerReceived || offerSent) {
+        abort();
+      }
+      offerReceived = msg.offer;
+      if (! accepted) {
+        audioButton("#togetherjs-audio-incoming");
+        return;
+      }
+      function run() {
+        var connection = getConnection();
+        connection.setRemoteDescription(
+          new RTCSessionDescription({
+            type: "offer",
+            sdp: offerReceived
+          }),
+          function () {
+            offerDescription = true;
+            addIceCandidate();
+            connect();
+          },
+          function (err) {
+            error("Error doing RTC setRemoteDescription:", err);
+          }
+        );
+      }
+      if (! audioStream) {
+        startStreaming(run);
+      } else {
+        run();
+      }
+    });
+
+    session.hub.on("rtc-answer", function (msg) {
+      if (answerSent || answerReceived || offerReceived || (! offerSent)) {
+        abort();
+        // Basically we have to abort and try again.  We'll expect the other
+        // client to restart when appropriate
+        session.send({type: "rtc-abort"});
+        return;
+      }
+      answerReceived = msg.answer;
+      assert(offerSent);
+      assert(audioStream);
+      var connection = getConnection();
+      connection.setRemoteDescription(
+        new RTCSessionDescription({
+          type: "answer",
+          sdp: answerReceived
+        }),
+        function () {
+          answerDescription = true;
+          // FIXME: I don't think this connect is ever needed?
+          connect();
+        },
+        function (err) {
+          error("Error doing RTC setRemoteDescription:", err);
+        }
+      );
+    });
+
+    session.hub.on("rtc-ice-candidate", function (msg) {
+      iceCandidate = msg.candidate;
+      if (offerDescription || answerDescription) {
+        addIceCandidate();
+      }
+    });
+
+    session.hub.on("rtc-abort", function (msg) {
+      abort();
+      if (! accepted) {
+        return;
+      }
+      if (! audioStream) {
+        startStreaming(function () {
+          connect();
+        });
+      } else {
+        connect();
+      }
+    });
+
+    session.hub.on("hello", function (msg) {
+      // FIXME: displayToggle should be set due to
+      // _connection.onstatechange, but that's not working, so
+      // instead:
+      audioButton("#togetherjs-audio-ready");
+      if (accepted && (offerSent || answerSent)) {
+        abort();
+        connect();
+      }
+    });
+
+    function abort() {
+      answerSent = answerReceived = offerSent = offerReceived = null;
+      answerDescription = offerDescription = false;
+      _connection = null;
+      $audio[0].removeAttribute("src");
+    }
+
+  });
+
+  return webrtc;
+
+});
diff --git a/v3/js/togetherjs/togetherjs/who.js b/v3/js/togetherjs/togetherjs/who.js
new file mode 100644
index 000000000..1b3b86821
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/who.js
@@ -0,0 +1,112 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define(["util", "channels", "session", "ui"], function (util, channels, session, ui) {
+  var assert = util.assert;
+  var who = util.Module("who");
+  var MAX_RESPONSE_TIME = 5000;
+  var MAX_LATE_RESPONSE = 2000;
+
+  who.getList = function (hubUrl) {
+    return util.Deferred(function (def) {
+      var expected;
+      var channel = channels.WebSocketChannel(hubUrl);
+      var users = {};
+      var responded = 0;
+      var firstResponse = 0;
+      var lateResponseTimeout;
+      channel.onmessage = function (msg) {
+        if (msg.type == "init-connection") {
+          expected = msg.peerCount;
+        }
+        if (msg.type == "who") {
+          // Our message back to ourselves probably
+          firstResponse = setTimeout(function () {
+            close();
+          }, MAX_LATE_RESPONSE);
+        }
+        if (msg.type == "hello-back") {
+          if (! users[msg.clientId]) {
+            users[msg.clientId] = who.ExternalPeer(msg.clientId, msg);
+            responded++;
+            if (expected && responded >= expected) {
+              close();
+            } else {
+              def.notify(users);
+            }
+          }
+        }
+        console.log("users", users);
+      };
+      channel.send({
+        type: "who",
+        "server-echo": true,
+        clientId: null
+      });
+      var timeout = setTimeout(function () {
+        close();
+      }, MAX_RESPONSE_TIME);
+      function close() {
+        if (timeout) {
+          clearTimeout(timeout);
+        }
+        if (lateResponseTimeout) {
+          clearTimeout(lateResponseTimeout);
+        }
+        channel.close();
+        def.resolve(users);
+      }
+    });
+  };
+
+  who.invite = function (hubUrl, clientId) {
+    return util.Deferred(function (def) {
+      var channel = channels.WebSocketChannel(hubUrl);
+      var id = util.generateId();
+      channel.onmessage = function (msg) {
+        if (msg.type == "invite" && msg.inviteId == id) {
+          channel.close();
+          def.resolve();
+        }
+      };
+      var userInfo = session.makeHelloMessage(false);
+      delete userInfo.type;
+      userInfo.clientId = session.clientId;
+      channel.send({
+        type: "invite",
+        inviteId: id,
+        url: session.shareUrl(),
+        userInfo: userInfo,
+        forClientId: clientId,
+        clientId: null,
+        "server-echo": true
+      });
+    });
+  };
+
+  who.ExternalPeer = util.Class({
+    isSelf: false,
+    isExternal: true,
+    constructor: function (id, attrs) {
+      attrs = attrs || {};
+      assert(id);
+      this.id = id;
+      this.identityId = attrs.identityId || null;
+      this.status = attrs.status || "live";
+      this.idle = attrs.status || "active";
+      this.name = attrs.name || null;
+      this.avatar = attrs.avatar || null;
+      this.color = attrs.color || "#00FF00";
+      this.lastMessageDate = 0;
+      this.view = ui.PeerView(this);
+    },
+
+    className: function (prefix) {
+      prefix = prefix || "";
+      return prefix + util.safeClassName(this.id);
+    }
+
+  });
+
+  return who;
+});
diff --git a/v3/js/togetherjs/togetherjs/windowing.js b/v3/js/togetherjs/togetherjs/windowing.js
new file mode 100644
index 000000000..ee02fc537
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/windowing.js
@@ -0,0 +1,216 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+define(["jquery", "util", "peers", "session"], function ($, util, peers, session) {
+  var assert = util.assert;
+  var windowing = util.Module("windowing");
+  var $window = $(window);
+  // This is also in togetherjs.less, under .togetherjs-animated
+  var ANIMATION_DURATION = 1000;
+
+  /* Displays one window.  A window must already exist.  This hides other windows, and
+     positions the window according to its data-bound-to attributes */
+  windowing.show = function (element, options) {
+    element = $(element);
+    options = options || {};
+    options.bind = options.bind || element.attr("data-bind-to");
+    var notification = element.hasClass("togetherjs-notification");
+    var modal = element.hasClass("togetherjs-modal");
+    if (options.bind) {
+      options.bind = $(options.bind);
+    }
+    windowing.hide();
+    element.stop();
+    element.show();
+    // In addition to being hidden, the window can be faded out, which we want to undo:
+    element.css({opacity: "1"});
+    if (options.bind) {
+      assert(! modal, "Binding does not currently work with modals");
+      bind(element, options.bind);
+    }
+    if (notification) {
+      element.slideIn();
+    } else if (! modal) {
+      element.popinWindow();
+    }
+    if (modal) {
+      getModalBackground().show();
+      modalEscape.bind();
+    }
+    onClose = options.onClose || null;
+    session.emit("display-window", element.attr("id"), element);
+  };
+
+  var onClose = null;
+
+  /* Moves a window to be attached to data-bind-to, e.g., the button
+     that opened the window. Or you can provide an element that it should bind to. */
+  function bind(win, bound) {
+    if ($.browser.mobile) {
+      return;
+    }
+    win = $(win);
+    assert(bound.length, "Cannot find binding:", bound.selector, "from:", win.selector);
+    // FIXME: hardcoding
+    var ifacePos = "right";
+    //var ifacePos = panelPosition();
+    var boundPos = bound.offset();
+    boundPos.height = bound.height();
+    boundPos.width = bound.width();
+    var windowHeight = $window.height();
+    boundPos.top -= $window.scrollTop();
+    boundPos.left -= $window.scrollLeft();
+    // FIXME: I appear to have to add the padding to the width to get a "true"
+    // width.  But it's still not entirely consistent.
+    var height = win.height() + 5;
+    var width = win.width() + 20;
+    var left, top;
+    if (ifacePos == "right") {
+      left = boundPos.left - 11 - width;
+      top = boundPos.top + (boundPos.height / 2) - (height / 2);
+    } else if (ifacePos == "left") {
+      left = boundPos.left + boundPos.width + 15;
+      top = boundPos.top + (boundPos.height / 2) - (height / 2);
+    } else if (ifacePos == "bottom") {
+      left = (boundPos.left + boundPos.width / 2) - (width / 2);
+      top = boundPos.top - 10 - height;
+    }
+    top = Math.min(windowHeight - 10 - height, Math.max(10, top));
+    win.css({
+      top: top + "px",
+      left: left + "px"
+    });
+    if (win.hasClass("togetherjs-window")) {
+      $("#togetherjs-window-pointer-right, #togetherjs-window-pointer-left").hide();
+      var pointer = $("#togetherjs-window-pointer-" + ifacePos);
+      pointer.show();
+      if (ifacePos == "right") {
+        pointer.css({
+          top: boundPos.top + Math.floor(boundPos.height / 2) + "px",
+          left: left + win.width() + 9 + "px"
+        });
+      } else if (ifacePos == "left") {
+        pointer.css({
+          top: boundPos.top + Math.floor(boundPos.height / 2) + "px",
+          left: (left - 5) + "px"
+        });
+      } else {
+        console.warn("don't know how to deal with position:", ifacePos);
+      }
+    }
+    win.data("boundTo", bound.selector || "#" + bound.attr("id"));
+    bound.addClass("togetherjs-active");
+  }
+
+  session.on("resize", function () {
+    var win = $(".togetherjs-modal:visible, .togetherjs-window:visible");
+    if (! win.length) {
+      return;
+    }
+    var boundTo = win.data("boundTo");
+    if (! boundTo) {
+      return;
+    }
+    boundTo = $(boundTo);
+    bind(win, boundTo);
+  });
+
+  windowing.hide = function (els) {
+    // FIXME: also hide modals?
+    els = els || ".togetherjs-window, .togetherjs-modal, .togetherjs-notification";
+    els = $(els);
+    els = els.filter(":visible");
+    els.filter(":not(.togetherjs-notification)").hide();
+    getModalBackground().hide();
+    var windows = [];
+    els.each(function (index, element) {
+      element = $(element);
+      windows.push(element);
+      var bound = element.data("boundTo");
+      if (! bound) {
+        return;
+      }
+      bound = $(bound);
+      bound.addClass("togetherjs-animated").addClass("togetherjs-color-pulse");
+      setTimeout(function () {
+        bound.removeClass("togetherjs-color-pulse").removeClass("togetherjs-animated");
+      }, ANIMATION_DURATION+10);
+      element.data("boundTo", null);
+      bound.removeClass("togetherjs-active");
+      if (element.hasClass("togetherjs-notification")) {
+        element.fadeOut().promise().then(function () {
+          this.hide();
+        });
+      }
+    });
+    $("#togetherjs-window-pointer-right, #togetherjs-window-pointer-left").hide();
+    if (onClose) {
+      onClose();
+      onClose = null;
+    }
+    if (windows.length) {
+      session.emit("hide-window", windows);
+    }
+  };
+
+  windowing.showNotification = function (element, options) {
+    element = $(element);
+    options = options || {};
+    assert(false);
+  };
+
+  windowing.toggle = function (el) {
+    el = $(el);
+    if (el.is(":visible")) {
+      windowing.hide(el);
+    } else {
+      windowing.show(el);
+    }
+  };
+
+  function bindEvents(el) {
+    el.find(".togetherjs-close, .togetherjs-dismiss").click(function (event) {
+      var w = $(event.target).closest(".togetherjs-window, .togetherjs-modal, .togetherjs-notification");
+      windowing.hide(w);
+      event.stopPropagation();
+      return false;
+    });
+  }
+
+  function getModalBackground() {
+    if (getModalBackground.element) {
+      return getModalBackground.element;
+    }
+    var background = $("#togetherjs-modal-background");
+    assert(background.length);
+    getModalBackground.element = background;
+    background.click(function () {
+      windowing.hide();
+    });
+    return background;
+  }
+
+  var modalEscape = {
+    bind: function () {
+      $(document).keydown(modalEscape.onKeydown);
+    },
+    unbind: function () {
+      $(document).unbind("keydown", modalEscape.onKeydown);
+    },
+    onKeydown: function (event) {
+      if (event.which == 27) {
+        windowing.hide();
+      }
+    }
+  };
+
+  session.on("close", function () {
+    modalEscape.unbind();
+  });
+
+  session.on("new-element", function (el) {
+    bindEvents(el);
+  });
+
+  return windowing;
+});
diff --git a/v3/js/togetherjs/togetherjs/youtubeVideos.js b/v3/js/togetherjs/togetherjs/youtubeVideos.js
new file mode 100644
index 000000000..04a84ce21
--- /dev/null
+++ b/v3/js/togetherjs/togetherjs/youtubeVideos.js
@@ -0,0 +1,277 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http:// mozilla.org/MPL/2.0/. */
+
+define(["jquery", "util", "session", "elementFinder"],
+function ($, util, session, elementFinder) {
+
+  // constant var to indicate whether two players are too far apart in sync
+  var TOO_FAR_APART = 3000;
+  // embedded youtube iframes
+  var youTubeIframes = [];
+  // youtube API load delay
+  var API_LOADING_DELAY = 2000;
+
+  session.on("reinitialize", function () {
+    if (TogetherJS.config.get("youtube")) {
+      prepareYouTube();
+    }
+  });
+
+  session.on("close", function () {
+    $(youTubeIframes).each(function (i, iframe) {
+      // detach players from iframes
+      $(iframe).removeData("togetherjs-player");
+      $(iframe).removeData("dontPublish");
+      $(iframe).removeData("currentVideoId");
+      // disable iframeAPI
+      $(iframe).removeAttr("enablejsapi");
+      // remove unique youtube iframe indicators
+      var id = $(iframe).attr("id") || "";
+      if (id.indexOf("youtube-player") === 0) {
+        // An id we added
+        $(iframe).removeAttr("id");
+      }
+      youTubeIframes = [];
+    });
+  });
+
+  TogetherJS.config.track("youtube", function (track, previous) {
+    if (track && ! previous) {
+      prepareYouTube();
+      // You can enable youtube dynamically, but can't turn it off:
+      TogetherJS.config.close("youtube");
+    }
+  });
+
+  function prepareYouTube() {
+    // setup iframes first
+    setupYouTubeIframes();
+
+    // this function should be global so it can be called when API is loaded
+    window.onYouTubeIframeAPIReady = function() {
+      // YouTube API is ready
+      $(youTubeIframes).each(function (i, iframe) {
+        var player = new YT.Player(iframe.id, { // get the reference to the already existing iframe
+          events: {
+            'onReady': insertPlayer,
+            'onStateChange': publishPlayerStateChange
+          }
+        });
+      });
+    };
+
+    if (window.YT === undefined) {
+      // load necessary API
+      // it calls onYouTubeIframeAPIReady automatically when the API finishes loading
+      var tag = document.createElement('script');
+      tag.src = "https://www.youtube.com/iframe_api";
+      var firstScriptTag = document.getElementsByTagName('script')[0];
+      firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
+    } else {
+      // manually invoke APIReady function when the API was already loaded by user
+      onYouTubeIframeAPIReady();
+    }
+
+    // give each youtube iframe a unique id and set its enablejsapi param to true
+    function setupYouTubeIframes() {
+      var iframes = $('iframe');
+      iframes.each(function (i, iframe) {
+        // if the iframe's unique id is already set, skip it
+        // FIXME: what if the user manually sets an iframe's id (i.e. "#my-youtube")?
+        // maybe we should set iframes everytime togetherjs is reinitialized?
+        if (($(iframe).attr("src") || "").indexOf("youtube") != -1 && !$(iframe).attr("id")) {
+          $(iframe).attr("id", "youtube-player"+i);
+          $(iframe).attr("enablejsapi", 1);
+          youTubeIframes[i] = iframe;
+        }
+      });
+    } // iframes are ready
+
+    function insertPlayer(event) {
+      // only when it is READY, attach a player to its iframe
+      var currentPlayer = event.target;
+      var currentIframe = currentPlayer.a;
+      // check if a player is already attached in case of being reinitialized
+      if (!$(currentIframe).data("togetherjs-player")) {
+        $(currentIframe).data("togetherjs-player", currentPlayer);
+        // initialize its dontPublish flag as well
+        $(currentIframe).data("dontPublish", false);
+        // store its current video's id
+        var currentVideoId = getVideoIdFromUrl(currentPlayer.getVideoUrl());
+        $(currentIframe).data("currentVideoId", currentVideoId);
+      }
+    }
+  } // end of prepareYouTube
+
+  function publishPlayerStateChange(event) {
+    var target = event.target; 
+    var currentIframe = target.a;
+    // FIXME: player object retrieved from event.target has an incomplete set of essential functions
+    // this is most likely due to a recently-introduced problem with current YouTube API as others have been reporting the same issue (12/18/`13)
+    //var currentPlayer = target;
+    //var currentTime = currentPlayer.getCurrentTime();
+    var currentPlayer = $(currentIframe).data("togetherjs-player");
+    var currentTime = target.k.currentTime;
+    var iframeLocation = elementFinder.elementLocation(currentIframe);
+
+    if ($(currentPlayer).data("seek")) {
+      $(currentPlayer).removeData("seek");
+      return;
+    }
+
+    // do not publish if playerState was changed by other users
+    if ($(currentIframe).data("dontPublish")) {
+      // make it false again so it can start publishing events of its own state changes
+      $(currentIframe).data("dontPublish", false);
+      return;
+    }
+
+    // notify other people that I changed the player state
+    if (event.data == YT.PlayerState.PLAYING) {
+
+      var currentVideoId = isDifferentVideoLoaded(currentIframe);
+      if (currentVideoId) {
+        // notify that I just loaded another video
+        publishDifferentVideoLoaded(iframeLocation, currentVideoId);
+        // update current video id
+        $(currentIframe).data("currentVideoId", currentVideoId);
+      } else {
+        session.send({
+          type: "playerStateChange",
+          element: iframeLocation,
+          playerState: 1,
+          playerTime: currentTime
+        });
+      }
+    } else if (event.data == YT.PlayerState.PAUSED) {
+      session.send({
+        type: "playerStateChange",
+        element: iframeLocation,
+        playerState: 2,
+        playerTime: currentTime
+      });
+    } else {
+      // do nothing when the state is buffering, cued, or ended
+      return;
+    }
+  }
+
+  function publishDifferentVideoLoaded(iframeLocation, videoId) {
+    session.send({
+      type: "differentVideoLoaded",
+      videoId: videoId,
+      element: iframeLocation
+    });
+  }
+
+  session.hub.on('playerStateChange', function (msg) {
+    var iframe = elementFinder.findElement(msg.element);
+    var player = $(iframe).data("togetherjs-player");
+    var currentTime = player.getCurrentTime();
+    var currentState = player.getPlayerState();
+
+    if (currentState != msg.playerState) {
+      $(iframe).data("dontPublish", true);
+    }
+
+    if (msg.playerState == 1) {
+      player.playVideo();
+      // seekTo() updates the video's time and plays it if it was already playing
+      // and pauses it if it was already paused
+      if (areTooFarApart(currentTime, msg.playerTime)) {
+        player.seekTo(msg.playerTime, true);
+      }
+    } else if (msg.playerState == 2) {
+      // When YouTube videos are advanced while playing,
+      // Chrome: pause -> pause -> play (onStateChange is called even when it is from pause to pause)
+      // FireFox: buffering -> play -> buffering -> play
+      // We must prevent advanced videos from going out of sync
+      player.pauseVideo();
+      if (areTooFarApart(currentTime, msg.playerTime)) {
+        // "seek" flag will help supress publishing unwanted state changes
+        $(player).data("seek", true);
+        player.seekTo(msg.playerTime, true);
+      }
+    }
+  });
+
+  // if a late user joins a channel, synchronize his videos
+  session.hub.on('hello', function () {
+    // wait a couple seconds to make sure the late user has finished loading API
+    setTimeout(synchronizeVideosOfLateGuest, API_LOADING_DELAY);
+  });
+
+  session.hub.on('synchronizeVideosOfLateGuest', function (msg) {
+    var iframe = elementFinder.findElement(msg.element);
+    var player = $(iframe).data("togetherjs-player");
+    // check if another video had been loaded to an existing iframe before I joined
+    var currentVideoId = $(iframe).data("currentVideoId");
+    if (msg.videoId != currentVideoId) {
+      $(iframe).data("currentVideoId", msg.videoId);
+      player.loadVideoById(msg.videoId, msg.playerTime, 'default');
+    } else {
+      // if the video is only cued, I do not have to do anything to sync
+      if (msg.playerState != 5) {
+        player.seekTo(msg.playerTime, true);
+      }
+    }
+  });
+
+  session.hub.on('differentVideoLoaded', function (msg) {
+    // load a new video if the host has loaded one
+    var iframe = elementFinder.findElement(msg.element);
+    var player = $(iframe).data("togetherjs-player");
+    player.loadVideoById(msg.videoId, 0, 'default');
+    $(iframe).data("currentVideoId", msg.videoId);
+
+  });
+
+  function synchronizeVideosOfLateGuest() {
+    youTubeIframes.forEach(function (iframe) {
+      var currentPlayer = $(iframe).data("togetherjs-player");
+      var currentVideoId = getVideoIdFromUrl(currentPlayer.getVideoUrl());
+      var currentState = currentPlayer.getPlayerState();
+      var currentTime = currentPlayer.getCurrentTime();
+      var iframeLocation = elementFinder.elementLocation(iframe);
+      session.send({
+        type: "synchronizeVideosOfLateGuest",
+        element: iframeLocation,
+        videoId: currentVideoId,
+        playerState: currentState, //this might be necessary later
+        playerTime: currentTime
+      });
+    });
+  }
+
+  function isDifferentVideoLoaded(iframe) {
+    var lastVideoId = $(iframe).data("currentVideoId");
+    var currentPlayer = $(iframe).data("togetherjs-player");
+    var currentVideoId = getVideoIdFromUrl(currentPlayer.getVideoUrl());
+
+    // since url forms of iframe src and player's video url are different,
+    // I have to compare the video ids
+    if (currentVideoId != lastVideoId) {
+      return currentVideoId;
+    } else {
+      return false;
+    }
+  }
+
+  // parses videoId from the url returned by getVideoUrl function
+  function getVideoIdFromUrl(videoUrl) {
+    var videoId = videoUrl.split('v=')[1];
+    //Chrome and Firefox have different positions for parameters
+    var ampersandIndex = videoId.indexOf('&');
+    if (ampersandIndex != -1) {
+      videoId = videoId.substring(0, ampersandIndex);
+    }
+    return videoId;
+  }
+
+  function areTooFarApart(myTime, theirTime) {
+    var secDiff = Math.abs(myTime - theirTime);
+    var milliDiff = secDiff * 1000;
+    return milliDiff > TOO_FAR_APART;
+  }
+});
diff --git a/v3/make_visualizations.py b/v3/make_visualizations.py
new file mode 100644
index 000000000..96d66e14f
--- /dev/null
+++ b/v3/make_visualizations.py
@@ -0,0 +1,423 @@
+# 'Make' support for Online Python Tutor
+#
+# Copyright (C) 2013 Peter Robinson (pjr@itee.uq.edu.au)
+#
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+"""
+This program is a 'make' program for embedding traces in web pages.
+
+The process is driven by a .json file (the 'Makefile')
+
+Assuming the file viz_makefile.json is in the cwd which will typically
+be where the web pages and python code to be visualized reside, 
+and $OPT is the path to the installation of OPT 
+(including make_visualizations.py) then
+
+python $OPT/make_visualizations.py viz_makefile.json
+
+will generate all the .js traces and update the web pages as specified
+in viz_makefile.json.
+
+python $OPT/make_visualizations.py viz_makefile.json eg1.html 
+
+will do the same thing but only for the given page(s).
+
+Here is an example of the 'Makefile' viz_makefile.json
+----------------------------
+{       
+"visualizer_url": 
+      "http://path_to_local_visualizer/visualize.html",
+
+
+"default_viz_config": 
+      {
+        "embeddedMode": true, 
+        "verticalStack": true
+      },
+
+"eg1.html":
+      [
+        # hash to end of line is a comment
+        "js/t1.js",
+        {
+           "python_scripts/t1a.py": {}
+           "python_scripts/t1b.py": {"embeddedMode": false}
+        }
+      ]
+"eg2.html":
+      [
+        "js/t2.js",
+        {
+           # verticalStack is removed from the params below
+           "python_scripts/t2.py": {"verticalStack": ""}
+        }
+      ]
+}
+----------------------------
+For each .html file the first argument is the .js file where the traces will go
+and the second argument is a dictionary whose keys are the python scripts
+to be used to generate the traces.
+
+If "visualizer_url" is not supplied it defaults to 
+  "http://pythontutor.com/visualize.html"
+
+If "default_viz_config" is not supplied it defaults to 
+  {'heightChangeCallback': 'redrawAllVisualizerArrows', 
+   'editCodeBaseURL': viz_url}
+
+where viz_url is the value associated with the "visualizer_url" key.
+Note: for this version heightChangeCallback is hard-wired to be 
+redrawAllVisualizerArrows.
+
+The dictionary associated with a python script overrides the 
+"default_viz_config" dictionary.
+In other words, if all visualizations behave the same way then the dictionary 
+associated with a python script can be set to {} and so will end up being the 
+(supplied) default.
+
+"""
+
+import subprocess
+import os
+import re
+import json
+from optparse import OptionParser
+
+# The OPT program for generating traces
+GEN_JSON = "generate_json_trace.py"
+
+# The command used to generate traces {0} will be the full path to GEN_JSON
+# !! WARNING !! python below might need to be modified to point at the 
+# correct version
+COMMAND = "python {0} --create_jsvar={1}Trace {2}"
+
+# The possible keys for configuring the visualization and their types
+# At the moment changing callbacks are not supported - 
+# 'heightChangeCallback' is hard-wired in
+VIZ_CONFIG_TYPES = {#'heightChangeCallback': unicode,
+                    #'updateOutputCallback': unicode,
+                    #'executeCodeWithRawInputFunc': unicode,
+                    'embeddedMode': bool,
+                    'startingInstruction': int,
+                    'verticalStack': bool,
+                    'jumpToEnd': bool,
+                    'codeDivWidth': int,
+                    'codeDivHeight': int,
+                    'hideOutput' : bool,
+                    'editCodeBaseURL' : unicode,
+                    'allowEditAnnotations' : bool,
+                    'disableHeapNesting' : bool,
+                    'drawParentPointer' : bool,
+                    'textualMemoryLabels' : bool,
+                    'showOnlyOutputs' : bool,
+                    }
+
+CALLBACK_PATTERN_REPL = [
+    (r'"heightChangeCallback"\s*:\s*"([^"]*)"', r'"heightChangeCallback":\1'),
+    (r'"dateOutputCallback"\s*:\s*"([^"]*)"', r'"OutputCallback":\1'),
+    (r'"executeCodeWithRawInputFunc"\s*:\s*"([^"]*)"', 
+     r'"executeCodeWithRawInputFunc":\1')
+    ]
+
+#  visualize.html in OPT home              
+DEFALUT_VIZ_URL = 'http://pythontutor.com/visualize.html'
+
+# The global default visualization configuration
+# Note: heightChangeCallback is hard-wired to be redrawAllVisualizerArrows
+DEFAULT_VIZ_CONFIG = {'heightChangeCallback': 'redrawAllVisualizerArrows'}
+            
+
+# The string used to generate js code for ExecutionVisualizer
+VIZ_VAR = \
+"""var {0}Visualizer = 
+   new ExecutionVisualizer('{0}Div', {0}Trace,
+          {1});"""
+
+# The following is used to inject the dependencies and other info
+# into the web pages. If this info is already there then it will be replaced.
+# If your file already has this info in but does not have the 
+# PY_TUTOR_END footer then manually remove this info.
+# This information is based on the example from 'http://pythontutor.com'
+PY_TUTOR_START = '<!-- dependencies for pytutor.js -->'
+PY_TUTOR_END = '<!-- end of dependencies for pytutor.js -->'
+PY_TUTOR_DEPEND = PY_TUTOR_START + \
+"""
+
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.simplemodal.js"></script> <!-- for questions -->
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors 
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+<link type="text/css" href="css/basic.css" rel="stylesheet" />
+
+<!-- Python Tutor frontend code and styles -->
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<!-- Visualize Script -->
+<script type="text/javascript" src="{0}"></script>
+
+<!-- Cut and paste the following lines to the place where the visualizations are to be inserted
+
+{1}
+-->
+
+""" + PY_TUTOR_END
+
+# A regular expression used to remove the old info
+PY_TUTOR_RE = PY_TUTOR_START + '.*' + PY_TUTOR_END
+
+# Used to inject a comment along with the dependency information so that
+# you can cut and paste into the appropriate place in to the page body
+DIV_TEXT = '<div id="{0}Div"></div>'
+
+# The ready function to go at the end ot the generated .js file
+DOCUMENT_READY_TEXT = \
+"""
+$(document).ready(function() {{
+
+{0}
+
+    function redrawAllVisualizerArrows() {{
+        {1}
+    }}
+$(window).resize(redrawAllVisualizerArrows);
+}});
+"""
+
+REDRAW_CONNECTORS_TEXT = "if ({0}Visualizer) {0}Visualizer.redrawConnectors();"
+
+COMMENT_RE = r'#.*$'
+
+def check_viz_config(parent, config):
+    """Check that config is a valid visualization configuration"""
+    isOK = True
+    if type(config) != dict:
+        print "In {0}, {1} is not a dictionary".format(parent,config)
+        return False
+    for key, value in config.iteritems():
+        config_field_type = VIZ_CONFIG_TYPES.get(key)
+        if config_field_type is None:
+            print "Unknown visualizer key:", key
+            isOK = False
+        elif value != '' and type(value) != config_field_type:
+            print "The visualizer configure entry {0}:{1} has the wrong type".format(key,value)
+            isOK = False
+    return isOK
+
+def check_html_build(html, html_build_info):
+    """Check that the build information for this html file is valid."""
+    if len(html_build_info) != 2:
+        print "The build list for {0} should have 2 entries".format(html)
+        return False
+    if type(html_build_info[0]) != unicode or \
+            not html_build_info[0].endswith('.js'):
+        print "The first argument of build list for {0} should be a .js file".format(html)
+    if type(html_build_info[1]) != dict:
+        print "The html build information must be a dictionary"
+        return False
+    
+    isOK = True
+    for key, value in html_build_info[1].iteritems():
+        if type(key) != unicode or not key.endswith('.py'):
+            print "The key {0} is not a .py file".format(key)
+            isOK = False
+        isOK = check_viz_config(html_build_info[1], value) and isOK
+    return isOK
+
+    
+def check_build_info(build_info):
+    """Check that the json info is a valid 'Makefile'"""
+    isOK = True
+    if type(build_info) != dict:
+        print "The build information must be a dictionary"
+        return False
+    for key, value in build_info.iteritems():
+        if key == 'default_viz_config':
+            isOK = check_viz_config(build_info, value) and isOK
+        elif key == 'visualizer_url':
+            if type(value) != unicode:
+                print 'The visualizer url must be a string'
+                isOK = False
+        elif key.endswith('.html'):
+            isOK = check_html_build(key, value) and isOK
+        else:
+            print 'Unknown key:', key
+            isOK = False
+    return isOK
+
+def update_dict(d, defaultd):
+    """Update d with key,value pairs in defaultd if the key is not in d.
+    If the value is the empty string then that entry is removed from 
+    the dictionary"""
+    for key, value in defaultd.iteritems():
+        if key not in d:
+            d[key] = value
+        elif value == '':
+            d.pop(key)
+
+def get_build_info(json_file):
+    """Return the build information in json_file. 
+    Check if file is valid.
+    """
+    try:
+        fp = open(json_file, 'rU')
+        text = fp.read()
+        fp.close()
+        text = re.sub(COMMENT_RE, '', text, flags=re.M)
+        build_info = json.loads(text)
+    except Exception as e:
+        print "Error in {0}:\n{1}".format(json_file, str(e))
+        return None
+    if not check_build_info(build_info):
+        return None
+    # if necessary add a value for "visualizer_url"
+    if "visualizer_url" not in build_info:
+        build_info["visualizer_url"] = DEFALUT_VIZ_URL
+    # merge DEFAULT_VIZ_CONFIG with the supplied "default_viz_config"
+    config = DEFAULT_VIZ_CONFIG
+    config["editCodeBaseURL"] = build_info["visualizer_url"]
+    config.update(build_info.get("default_viz_config", {}))
+    build_info["default_viz_config"] = config
+    # update all the 
+    for key, value in build_info.iteritems():
+        if key.endswith('.html'):
+            for py_key, py_dict in value[1].iteritems():
+                update_dict(py_dict, build_info.get("default_viz_config", {}))
+    return build_info
+                
+                
+def get_vizname_root(py_file):
+    """Return the name to be used as the prefix for Trace, Visualizer etc"""
+    return os.path.basename(py_file).replace('.', '_')                           
+        
+
+
+def run_command(gen_trace, py_file):
+    """ Return the output of generate_json_trace.py on py_file"""
+    command = COMMAND.format(gen_trace, get_vizname_root(py_file), py_file)
+    return subprocess.check_output(command,bufsize=1,
+                                   close_fds=True,
+                                   shell=True)
+
+def make_viz(build_info, html_files):
+    """Build the visualizations specified in build_info and html_files"""
+    abspath = os.path.abspath(__file__)
+    dname = os.path.dirname(abspath)
+    prog = os.path.join(dname, GEN_JSON)
+    # if no html files are supplied 'make' all of them
+    if not html_files:
+        html_files = [h for h in build_info if h.endswith('.html')]
+
+    for html in html_files:
+        if html in build_info:
+            make_html_viz(prog, html, build_info[html])
+        else:
+            print "{0} is not in the json file".format(html)
+
+def get_viz_config(conf):
+    """Get the configuration params for visualization."""
+    text = json.dumps(conf)
+    # The callbacks are strings in conf and need to be turned into
+    # function relreences by removing the quotes
+    for patt, repl in CALLBACK_PATTERN_REPL:
+        text = re.sub(patt, repl, text)
+    return text
+
+def make_html_viz(prog, html_file, html_info):
+    """'Make' the visualizations for html_file"""
+
+    js_out, py_dict = html_info
+
+    # all_traces is a string containing all the js trace datastructures
+    # for all the supplied .py files for html_file
+    try:
+        all_traces = '\n'.join(run_command(prog, py) for py in py_dict)
+    except Exception as e:
+        print str(e)
+        return
+    
+    # all_viz is the string containing the js code for creating the
+    # required instances of ExecutionVisualizer for all the .py files
+    # the root of the .py file is used as the root names in ExecutionVisualizer
+    all_viz = '\n'.join(VIZ_VAR.format(get_vizname_root(py), 
+                                       get_viz_config(pyd)) \
+                            for py,pyd in py_dict.iteritems())
+
+    all_redraws = '        \n'.join(REDRAW_CONNECTORS_TEXT.format(get_vizname_root(py)) for py, pyd in py_dict.iteritems() if 'redrawAllVisualizerArrows' in pyd.values())
+    
+    ready_function = DOCUMENT_READY_TEXT.format(all_viz, all_redraws)
+
+    # all_js is the string of all the require js code
+    all_js = all_traces + '\n' + ready_function + '\n'
+
+    fd = open(js_out, 'w')
+    fd.write(all_js)
+    fd.close()
+
+    # Update html_file
+    try:
+        fd = open(html_file, 'rU')
+        html_text = fd.read()
+        fd.close()
+    except Exception as e:
+        print str(e)
+        return
+    # strip out the old OPT dependency info
+    html_text = re.sub(PY_TUTOR_RE, '', html_text, flags=re.M | re.S)
+    end_head_pos = html_text.find('\n</head>')
+    if end_head_pos == -1:
+        print "Could not find '\n</head>' in {0}".format(html_file)
+        return
+
+    # all_divs is the string of all div entries to embed in the html
+    # this is added to the header comments for easy cut and pasting
+    # to the correct location in the document.
+    all_divs = '\n'.join(DIV_TEXT.format(get_vizname_root(py)) for py in py_dict)
+    # add the updated dependency info just before </head>
+    html_text = html_text[:end_head_pos] +\
+        PY_TUTOR_DEPEND.format(js_out, all_divs) + \
+        html_text[end_head_pos:]
+    fd = open(html_file, 'w')
+    fd.write(html_text)
+    fd.close()
+    
+
+def main(args):
+    build_info = get_build_info(args[0])
+    if build_info is None:
+        print "Make aborted"
+    else:
+        make_viz(build_info, args[1:])
+
+
+if __name__ == '__main__': 
+    usage = "usage: %prog json_file [py_files]"
+    parser = OptionParser(usage = usage)
+    options,args = parser.parse_args()
+    if len(args) == 0:
+        print "Missing arguments - try python make_visualizations.py -h"
+    else:
+        main(args)
diff --git a/v3/matrix.html b/v3/matrix.html
new file mode 100644
index 000000000..eebfc8bf5
--- /dev/null
+++ b/v3/matrix.html
@@ -0,0 +1,138 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Coding The Matrix - Python Lab</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+<link rel="stylesheet" href="css/matrixtutor.css"/> <!-- include AFTER pytutor.css -->
+
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/matrixtutor.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+</head>
+
+<body>
+
+<div id="pyInputPane">
+
+<h1 class="problemDescClass" style="margin-bottom: 25px; font-size: 16pt;"></h1>
+
+Write your solution code here (will be submitted for grading):
+<br/>
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror instance -->
+
+<br/><br/>
+Write your test code here (will <b>not</b> be submitted for grading):
+<div id="testInputPane"></div> <!-- populate with a CodeMirror instance -->
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Run and Visualize Code</button>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="gradingPane">
+
+
+<h1 class="problemDescClass" style="margin-bottom: 15px; font-size: 14pt;"></h1>
+
+<p>
+<button id="submitGradeBtn" class="bigBtn" type="button">Submit for Grading</button>
+</p>
+
+<p>
+Grader output:<br/>
+<textarea style="font-size: 12pt" id="gradeStdout" cols="60" rows="6" wrap="off" readonly></textarea>
+</p>
+
+<!--
+<p>
+Grader errors:<br/>
+<textarea id="gradeStderr" cols="80" rows="4" wrap="off" readonly></textarea>
+</p>
+-->
+
+</div>
+
+<div id="footer">
+
+This version of <a href="http://pythontutor.com/">Online Python Tutor</a> supports
+<a href="http://www.python.org/doc/3.3.0/">Python 3.3</a> with limited module
+imports and no file I/O.</p>
+
+<p>Have a question? Maybe the <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/user-FAQ.md">FAQ</a>
+or other <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/">documentation</a>
+can help. Or check out its code at <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>.</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+</body>
+</html>
+
diff --git a/v3/matrix.py b/v3/matrix.py
new file mode 100644
index 000000000..3edeaaee5
--- /dev/null
+++ b/v3/matrix.py
@@ -0,0 +1,151 @@
+#  m a t r i x . p y
+#
+#  Support for 2d matrix that renders to an HTML table
+#
+#  Chris Meyers. 09/25/2013
+#
+
+dftTableAttr = 'cellspacing="0" cellpadding="10"'
+
+class Matrix :
+    def __init__ (self, nrows=1, ncols=1, data=None,
+                  dftFormat="", dftStyle="", title="",
+                  tableAttr=dftTableAttr, tableHeaders=None,
+                  Expand=True) :
+        self.nrows = nrows
+        self.ncols = ncols
+        self.values = {}
+        self.expanded = Expand
+        if Expand :
+            # get attributes only on the main Matrix
+            self.dftFormat    = dftFormat
+            self.dftStyle     = dftStyle
+            self.title        = title
+            self.tableAttr    = tableAttr
+            self.tableHeaders = tableHeaders
+            self.format = Matrix(nrows, ncols, Expand=False)
+            self.style  = Matrix(nrows, ncols, Expand=False)
+        if data :
+            if type(data) == type({}) : data=dictToLol(data)
+            if type(data) == type([]) :
+                self.populate(data)
+
+    def __getitem__(self, coords) :
+        row, col = coords
+        return self.values.get((row,col))
+
+    def __setitem__(self, coords, value) :
+        row, col = coords
+        self.values[(row,col)] = value
+        self.nrows = max(self.nrows,row+1)
+        self.ncols = max(self.ncols,col+1)
+        if self.expanded :
+            self.format.nrows = self.nrows
+            self.format.ncols = self.ncols
+            self.style.nrows  = self.nrows
+            self.style.ncols  = self.ncols
+        return value
+
+#===========================================
+
+    def setrowVals(self, row, values) :
+        "set each column to a seperate value"
+        col = 0
+        for col in range(len(values)) :
+            self.__setitem__((row,col),values[col])
+            col += 1
+
+    def setrowVal(self, row, value) :
+        "set all columns to the same value"
+        col = 0
+        while col < self.ncols :
+            self.__setitem__((row,col),value)
+            col += 1
+
+    def getrow (self, row) :
+        vals = []
+        for c in range(self.ncols) :
+            vals.append(self.__getitem__( (row,c) ))
+        return vals
+
+#===========================================
+
+    def setcolVals(self, col, values) :
+        "set each row to a seperate value"
+        row = 0
+        for row in range(len(values)) :
+            self.__setitem__((row,col),values[row])
+            row += 1
+
+    def setcolVal(self, col, value) :
+        "set all rowumns to the same value"
+        row = 0
+        while row < self.nrows :
+            self.__setitem__((row,col),value)
+            row += 1
+
+    def getcol (self, col) :
+        vals = []
+        for r in range(self.nrows) :
+            vals.append(self.__getitem__( (r,col) ))
+        return vals
+
+#===========================================
+
+    def populate(self, lists) :
+        "Fill self from a list of lists"
+        nRows = len(lists)
+        nCols = max([len(l) for l in lists])
+        for row in range(len(lists)) :
+            vals = lists[row]
+            if type(vals) != list : vals = [vals] # make sing col
+            self.setrowVals(row, vals)
+
+    def renderHtml(self,wrap=None) :
+        lins = ["","<table %s>" % self.tableAttr]
+        if self.title : lins[0] = "<div>%s</div>" % self.title
+        headers = self.tableHeaders
+        if headers :
+            lins.append("<tr><th>"+"</th><th>".join(map(str,headers))+
+                        "</th></tr>")
+        for row in range(self.nrows) :
+            rowLin = ["  <tr>"]
+            vals = self.getrow(row)
+            if self.format : formats = self.format.getrow(row)
+            else           : formats = ['']*self.ncols
+            if self.style  : styles  = self.style.getrow(row)
+            else           : styles  = ['']*self.ncols
+            for c in range(self.ncols) :
+                val = vals[c]; style=styles[c]; format=formats[c]
+                if val == None : val = ""
+                if not format : format = self.dftFormat
+                if format :
+                    if type(format)==type("") : val = format % val
+                    else                      : val = format(val)
+                if not style : style = self.dftStyle
+                if style : cell = '<td style="%s">%s</td>' % (style,val)
+                else     : cell = '<td>%s</td>' % val
+                if wrap and c>0 and c%wrap==0 : cell="</tr><tr>"+cell
+                rowLin.append(cell)
+            rowLin.append("</tr>")
+            lins.append("".join(rowLin))
+        lins.append("</table>")
+        return "\n".join(lins)
+
+    def __str__ (self) :
+        return "Matrix-%dx%d" % (self.nrows,self.ncols)
+
+#===========================================
+
+typeSeq = (type([]), type((1,2)))
+
+def dictToLol(dic) :
+    "Convert dict to a list of lists"
+    keys = dic.keys(); keys.sort()
+    lists = []
+    for key in keys :
+        val = dic[key]
+        if type(val) not in typeSeq : val = [val]
+        lists.append([key]+list(val))
+    return lists
+
diff --git a/v3/name_lookup.py b/v3/name_lookup.py
new file mode 100644
index 000000000..f58c91a7c
--- /dev/null
+++ b/v3/name_lookup.py
@@ -0,0 +1,28 @@
+#!/usr/local/bin/python2.7
+
+# Minimal CGI script for name lookups
+
+# Also, check CGI execute permission in your script directory.
+# You might need to create an .htaccess file like the following:
+#
+#   Options +ExecCGI
+#   AddHandler cgi-script .py
+
+import cgi
+import json
+import sys
+
+form = cgi.FieldStorage()
+requested_email = form['email'].value
+
+print("Content-type: text/plain; charset=iso-8859-1\n")
+
+for line in open('names.csv'):
+    toks = line.strip().split(',')
+    name = toks[0].strip()
+    email = toks[1].strip()
+    if email == requested_email:
+        print(json.dumps({'name': name, 'email': email}))
+        sys.exit(0) # get out early
+
+print(json.dumps({'error': 1}))
diff --git a/v3/office-mix-labshost/LabsJsServer-1.0.4.js b/v3/office-mix-labshost/LabsJsServer-1.0.4.js
new file mode 100644
index 000000000..c68ec166b
--- /dev/null
+++ b/v3/office-mix-labshost/LabsJsServer-1.0.4.js
@@ -0,0 +1,3262 @@
+/*! LabsJsServer.js - v1.0.4 - 2014-04-30 */
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        ;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        /**
+        * The current mode of the lab. Whether in edit mode or view mode. Edit is when configuring the lab and view
+        * is when taking the lab.
+        */
+        (function (LabMode) {
+            /**
+            * The lab is in edit mode. Meaning the user is configuring it
+            */
+            LabMode[LabMode["Edit"] = 0] = "Edit";
+
+            /**
+            * The lab is in view mode. Meaning the user is taking it
+            */
+            LabMode[LabMode["View"] = 1] = "View";
+        })(Core.LabMode || (Core.LabMode = {}));
+        var LabMode = Core.LabMode;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        ;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        /**
+        * Static class representing the permissions allowed for the given user of the lab
+        */
+        var Permissions = (function () {
+            function Permissions() {
+            }
+            Permissions.Edit = "Labs.Permissions.Edit";
+
+            Permissions.Take = "Labs.Permissions.Take";
+            return Permissions;
+        })();
+        Core.Permissions = Permissions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsCore.js.map
+
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Closes the component and indicates there will be no future actions against it.
+            */
+            Actions.CloseComponentAction = "Labs.Core.Actions.CloseComponentAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Action to create a new attempt
+            */
+            Actions.CreateAttemptAction = "Labs.Core.Actions.CreateAttemptAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Action to create a new component
+            */
+            Actions.CreateComponentAction = "Labs.Core.Actions.CreateComponentAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Attempt timeout action
+            */
+            Actions.AttemptTimeoutAction = "Labs.Core.Actions.AttemptTimeoutAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Action to retrieve a value associated with an attempt.
+            */
+            Actions.GetValueAction = "Labs.Core.Actions.GetValueAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Resume attempt action. Used to indicate the user is resuming work on a given attempt.
+            */
+            Actions.ResumeAttemptAction = "Labs.Core.Actions.ResumeAttemptAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (Actions) {
+            /**
+            * Action to submit an answer for a given attempt
+            */
+            Actions.SubmitAnswerAction = "Labs.Core.Actions.SubmitAnswerAction";
+        })(Core.Actions || (Core.Actions = {}));
+        var Actions = Core.Actions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsActions.js.map
+
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (GetActions) {
+            /**
+            * Gets actions associated with a given component.
+            */
+            GetActions.GetComponentActions = "Labs.Core.GetActions.GetComponentActions";
+        })(Core.GetActions || (Core.GetActions = {}));
+        var GetActions = Core.GetActions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        (function (GetActions) {
+            /**
+            * Get attempt get action. Retrieves all actions associated with a given attempt.
+            */
+            GetActions.GetAttempt = "Labs.Core.GetActions.GetAttempt";
+        })(Core.GetActions || (Core.GetActions = {}));
+        var GetActions = Core.GetActions;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsGetActions.js.map
+
+var Labs;
+(function (Labs) {
+    Labs.TimelineNextMessageType = "Labs.Message.Timeline.Next";
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Base class for components instances
+    */
+    var ComponentInstanceBase = (function () {
+        function ComponentInstanceBase() {
+        }
+        /**
+        * Attaches a LabsInternal to this component instance
+        *
+        * @param { id } The ID of the component
+        * @param { labs } The LabsInternal object for use by the instance
+        */
+        ComponentInstanceBase.prototype.attach = function (id, labs) {
+            this._id = id;
+            this._labs = labs;
+        };
+        return ComponentInstanceBase;
+    })();
+    Labs.ComponentInstanceBase = ComponentInstanceBase;
+})(Labs || (Labs = {}));
+var __extends = this.__extends || function (d, b) {
+    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
+    function __() { this.constructor = d; }
+    __.prototype = b.prototype;
+    d.prototype = new __();
+};
+var Labs;
+(function (Labs) {
+    /**
+    * Class representing a component instance. An instance is an instantiation of a component for a user. It contains
+    * a translated view of the component for a particular run of the lab.
+    */
+    var ComponentInstance = (function (_super) {
+        __extends(ComponentInstance, _super);
+        /**
+        * Constructs a new ComponentInstance.
+        */
+        function ComponentInstance() {
+            _super.call(this);
+        }
+        /**
+        * Begins a new attempt at the component
+        *
+        * @param { callback } Callback fired when the attempt has been created
+        */
+        ComponentInstance.prototype.createAttempt = function (callback) {
+            var _this = this;
+            // Retrieve the create attempt options
+            var createAttemptAction = this.getCreateAttemptOptions();
+
+            // And create the attempt
+            this._labs.takeAction(Labs.Core.Actions.CreateAttemptAction, createAttemptAction, function (err, createResult) {
+                var attempt = null;
+                if (!err) {
+                    try  {
+                        attempt = _this.buildAttempt(createResult);
+                    } catch (exception) {
+                        err = exception;
+                    }
+                }
+
+                setTimeout(function () {
+                    return callback(err, attempt);
+                }, 0);
+            });
+        };
+
+        /**
+        * Retrieves all attempts associated with the given component
+        *
+        * @param { callback } Callback fired once the attempts have been retrieved
+        */
+        ComponentInstance.prototype.getAttempts = function (callback) {
+            var _this = this;
+            var componentSearch = {
+                componentId: this._id,
+                action: Labs.Core.Actions.CreateAttemptAction
+            };
+
+            this._labs.getActions(Labs.Core.GetActions.GetComponentActions, componentSearch, function (err, actions) {
+                // Construct the attempts if there wasn't an error
+                var attempts = null;
+                if (!err) {
+                    attempts = actions.map(function (action) {
+                        return _this.buildAttempt(action);
+                    });
+                }
+
+                // And return them
+                setTimeout(function () {
+                    return callback(null, attempts);
+                }, 0);
+            });
+        };
+
+        /**
+        * Retrieves the default create attempt options. Can be overriden by derived classes.
+        */
+        ComponentInstance.prototype.getCreateAttemptOptions = function () {
+            var createAttemptAction = {
+                componentId: this._id
+            };
+
+            return createAttemptAction;
+        };
+
+        /**
+        * method to built an attempt from the given action. Should be implemented by derived classes.
+        *
+        * @param { createAttemptResult } The create attempt action for the attempt
+        */
+        ComponentInstance.prototype.buildAttempt = function (createAttemptResult) {
+            throw "Not implemented";
+        };
+        return ComponentInstance;
+    })(Labs.ComponentInstanceBase);
+    Labs.ComponentInstance = ComponentInstance;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Enumeration of the connection states
+    */
+    (function (ConnectionState) {
+        /**
+        * Disconnected
+        */
+        ConnectionState[ConnectionState["Disconnected"] = 0] = "Disconnected";
+
+        /**
+        * In the process of connecting
+        */
+        ConnectionState[ConnectionState["Connecting"] = 1] = "Connecting";
+
+        /**
+        * Connected
+        */
+        ConnectionState[ConnectionState["Connected"] = 2] = "Connected";
+    })(Labs.ConnectionState || (Labs.ConnectionState = {}));
+    var ConnectionState = Labs.ConnectionState;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Helper class to manage a set of event handlers
+    */
+    var EventManager = (function () {
+        function EventManager() {
+            this._handlers = {};
+        }
+        EventManager.prototype.getHandler = function (event) {
+            var handler = this._handlers[event];
+            if (handler === undefined) {
+                this._handlers[event] = [];
+            }
+
+            return this._handlers[event];
+        };
+
+        /**
+        * Adds a new event handler for the given event
+        *
+        * @param { event } The event to add a handler for
+        * @param { handler } The event handler to add
+        */
+        EventManager.prototype.add = function (event, handler) {
+            var eventHandlers = this.getHandler(event);
+            eventHandlers.push(handler);
+        };
+
+        /**
+        * Removes an event handler for the given event
+        *
+        * @param { event } The event to remove a handler for
+        * @param { handler } The event handler to remove
+        */
+        EventManager.prototype.remove = function (event, handler) {
+            var eventHandlers = this.getHandler(event);
+            for (var i = eventHandlers.length - 1; i >= 0; i--) {
+                if (eventHandlers[i] === handler) {
+                    eventHandlers.splice(i, 1);
+                }
+            }
+        };
+
+        /**
+        * Fires the given event
+        *
+        * @param { event } The event to fire
+        * @param { data } Data associated with the event
+        */
+        EventManager.prototype.fire = function (event, data) {
+            var eventHandlers = this.getHandler(event);
+            eventHandlers.forEach(function (handler) {
+                handler(data);
+            });
+        };
+        return EventManager;
+    })();
+    Labs.EventManager = EventManager;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * The LabEditor allows for the editing of the given lab. This includes getting and setting
+    * the entire configuration associated with the lab.
+    */
+    var LabEditor = (function () {
+        /**
+        * Constructs a new LabEditor
+        *
+        * @param { labsInternal } LabsInternal to use with the editor
+        * @param { doneCallback } Callback to invoke when the editor is finished
+        */
+        function LabEditor(labsInternal, doneCallback) {
+            this._labsInternal = labsInternal;
+            this._doneCallback = doneCallback;
+        }
+        LabEditor.Create = /**
+        * Creates a new lab. This prepares the lab storage and saves the host version
+        *
+        * @param { labsInternal } LabsInternal to use with the editor
+        * @param { doneCallback } Callback to invoke when the editor is finished
+        * @param { callback } Callback fired once the LabEditor has been created
+        */
+        function (labsInternal, doneCallback, callback) {
+            labsInternal.create(function (err, data) {
+                if (err) {
+                    setTimeout(function () {
+                        return callback(err, null);
+                    }, 0);
+                    return;
+                }
+
+                // Instantiate the components and then attach them to the lab
+                var labEditor = new LabEditor(labsInternal, doneCallback);
+                setTimeout(function () {
+                    return callback(null, labEditor);
+                }, 0);
+            });
+        };
+
+        /**
+        * Gets the current lab configuration
+        *
+        * @param { callback } Callback fired once the configuration has been retrieved
+        */
+        LabEditor.prototype.getConfiguration = function (callback) {
+            this._labsInternal.getConfiguration(callback);
+        };
+
+        /**
+        * Sets a new lab configuration
+        *
+        * @param { configuration } The configuration to set
+        * @param { callback } Callback fired once the configuration has been set
+        */
+        LabEditor.prototype.setConfiguration = function (configuration, callback) {
+            this._labsInternal.setConfiguration(configuration, callback);
+        };
+
+        /**
+        * Indicates that the user is done editing the lab.
+        *
+        * @param { callback } Callback fired once the lab editor has finished
+        */
+        LabEditor.prototype.done = function (callback) {
+            this._doneCallback();
+            this._doneCallback = null;
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+        return LabEditor;
+    })();
+    Labs.LabEditor = LabEditor;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * A LabInstance is an instance of the configured lab for the current user. It is used to
+    * record and retrieve per user lab data.
+    */
+    var LabInstance = (function () {
+        /**
+        * Constructs a new LabInstance
+        *
+        * @param { labsInternal } The LabsInternal to use with the instance
+        * @param { components } The components of the lab instance
+        * @param { doneCallback } Callback to invoke once the user is done taking the instance
+        * @param { data } Custom data attached to the lab
+        */
+        function LabInstance(labsInternal, components, doneCallback, data) {
+            this._labsInternal = labsInternal;
+            this.components = components;
+            this._doneCallback = doneCallback;
+            this.data = data;
+        }
+        LabInstance.Create = /**
+        * Creates a new LabInstance
+        *
+        * @param { labsInternal } The LabsInternal to use with the instance
+        * @param { doneCallback } Callback to invoke once the user is done taking the instance
+        * @param { callback } Callback that fires once the LabInstance has been created
+        */
+        function (labsInternal, doneCallback, callback) {
+            labsInternal.getConfigurationInstance(function (err, configuration) {
+                if (err) {
+                    setTimeout(function () {
+                        return callback(err, null);
+                    }, 0);
+                    return;
+                }
+
+                if (!configuration) {
+                    setTimeout(function () {
+                        return callback("No configuration set", null);
+                    }, 0);
+                    return;
+                }
+
+                // Instantiate the components and then attach them to the lab
+                var components = configuration.components.map(function (component) {
+                    var componentInstance = Labs.deserialize(component);
+                    componentInstance.attach(component.componentId, labsInternal);
+                    return componentInstance;
+                });
+                var labInstance = new LabInstance(labsInternal, components, doneCallback, configuration.data);
+
+                // And return it to the user
+                setTimeout(function () {
+                    return callback(null, labInstance);
+                }, 0);
+            });
+        };
+
+        /**
+        * Gets the current state of the lab for the user
+        *
+        * @param { callback } Callback that fires with the lab state
+        */
+        LabInstance.prototype.getState = function (callback) {
+            this._labsInternal.getState(callback);
+        };
+
+        /**
+        * Sets the state of the lab for the user
+        *
+        * @param { state } The state to set
+        * @param { callback } Callback that fires once the state is set
+        */
+        LabInstance.prototype.setState = function (state, callback) {
+            this._labsInternal.setState(state, callback);
+        };
+
+        /**
+        * Indicates that the user is done taking the lab.
+        *
+        * @param { callback } Callback fired once the lab instance has finished
+        */
+        LabInstance.prototype.done = function (callback) {
+            this._doneCallback();
+            this._doneCallback = null;
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+        return LabInstance;
+    })();
+    Labs.LabInstance = LabInstance;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    // Current initialization state
+    var _connectionState = Labs.ConnectionState.Disconnected;
+
+    // Internal device we use to communicate with the host
+    var _labsInternal;
+
+    // Cached information received during a connection
+    var _connectionResponse;
+
+    // Timeline control class
+    var _timeline;
+
+    // Map of deserialization functions
+    var _labDeserializers = {};
+
+    // Instance of lab being taken
+    var _labInstance = null;
+
+    // Instance of lab being edited
+    var _labEditor = null;
+
+    /**
+    * Method to use to construct a default ILabHost
+    */
+    Labs.DefaultHostBuilder;
+
+    function connect(labHost, callback) {
+        if (_connectionState !== Labs.ConnectionState.Disconnected) {
+            throw "connect has previously been called";
+        }
+
+        // Set the correct parameters after the method overloading
+        var translatedCallback = callback === undefined ? labHost : callback;
+        var translatedLabHost = callback === undefined ? Labs.DefaultHostBuilder() : labHost;
+
+        // Instantiate the internal labs class
+        var labsInternal;
+        try  {
+            labsInternal = new Labs.LabsInternal(translatedLabHost);
+        } catch (exception) {
+            setTimeout(function () {
+                return translatedCallback(exception, null);
+            }, 0);
+            return;
+        }
+
+        // Now that we've been able to create the objects, set the state to connecting
+        _connectionState = Labs.ConnectionState.Connecting;
+
+        // And go and initialize communication with the host
+        labsInternal.connect(function (err, connectionResponse) {
+            if (err) {
+                _connectionState = Labs.ConnectionState.Disconnected;
+                _labsInternal = null;
+                _connectionResponse = null;
+            } else {
+                _connectionState = Labs.ConnectionState.Connected;
+                _labsInternal = labsInternal;
+                _connectionResponse = connectionResponse;
+                _timeline = new Labs.Timeline(_labsInternal);
+            }
+
+            setTimeout(function () {
+                // Invoke the callback to allow events to be registered
+                translatedCallback(err, connectionResponse);
+
+                // And notify the labs internal to send any pending events
+                labsInternal.firePendingMessages();
+            }, 0);
+        });
+    }
+    Labs.connect = connect;
+
+    /**
+    * Returns whether or not the labs are connected to the host.
+    */
+    function isConnected() {
+        return _connectionState === Labs.ConnectionState.Connected;
+    }
+    Labs.isConnected = isConnected;
+
+    /**
+    * Retrieves the information associated with a connection
+    */
+    function getConnectionInfo() {
+        checkIsConnected();
+
+        return _connectionResponse;
+    }
+    Labs.getConnectionInfo = getConnectionInfo;
+
+    /**
+    * Disconnects from the host.
+    *
+    * @param { completionStatus } The final result of the lab interaction
+    */
+    function disconnect() {
+        checkIsConnected();
+
+        // Update our state to be disconnected
+        _labsInternal.dispose();
+        _labsInternal = null;
+        _timeline = null;
+        _labInstance = null;
+        _labEditor = null;
+        _connectionState = Labs.ConnectionState.Disconnected;
+    }
+    Labs.disconnect = disconnect;
+
+    /**
+    * Opens the lab for editing. When in edit mode the configuration can be specified. A lab cannot be edited while it
+    * is being taken.
+    *
+    * @param { callback } Callback fired once the LabEditor is created
+    */
+    function editLab(callback) {
+        checkIsConnected();
+
+        if (_labInstance !== null) {
+            throw "Lab is being taken";
+        }
+        if (_labEditor !== null) {
+            throw "Lab edit already in progress";
+        }
+
+        Labs.LabEditor.Create(_labsInternal, function () {
+            _labEditor = null;
+        }, function (err, labEditor) {
+            _labEditor = !err ? labEditor : null;
+            setTimeout(function () {
+                return callback(err, labEditor);
+            }, 0);
+        });
+    }
+    Labs.editLab = editLab;
+
+    /**
+    * Takes the given lab. This allows results to be sent for the lab. A lab cannot be taken while it is being edited.
+    *
+    * @param { callback } Callback fired once the LabInstance is created
+    */
+    function takeLab(callback) {
+        checkIsConnected();
+
+        if (_labEditor !== null) {
+            throw "Lab is being edited";
+        }
+        if (_labInstance !== null) {
+            throw "Lab already in progress";
+        }
+
+        Labs.LabInstance.Create(_labsInternal, function () {
+            _labInstance = null;
+        }, function (err, labInstance) {
+            _labInstance = !err ? labInstance : null;
+            setTimeout(function () {
+                return callback(err, labInstance);
+            }, 0);
+        });
+    }
+    Labs.takeLab = takeLab;
+
+    /**
+    * Adds a new event handler for the given event
+    *
+    * @param { event } The event to add a handler for
+    * @param { handler } The event handler to add
+    */
+    function on(event, handler) {
+        checkIsConnected();
+
+        _labsInternal.on(event, handler);
+    }
+    Labs.on = on;
+
+    /**
+    * Removes an event handler for the given event
+    *
+    * @param { event } The event to remove a handler for
+    * @param { handler } The event handler to remove
+    */
+    function off(event, handler) {
+        checkIsConnected();
+
+        _labsInternal.off(event, handler);
+    }
+    Labs.off = off;
+
+    /**
+    * Retrieves the Timeline object that can be used to control the host's player control.
+    */
+    function getTimeline() {
+        checkIsConnected();
+
+        return _timeline;
+    }
+    Labs.getTimeline = getTimeline;
+
+    /**
+    * Registers a function to deserialize the given type. Should be used by component authors only.
+    *
+    * @param { type } The type to deserialize
+    * @param { deserialize } The deserialization function
+    */
+    function registerDeserializer(type, deserialize) {
+        if (type in _labDeserializers) {
+            throw "Type already has a create function registered";
+        }
+
+        // Save the serialization functions
+        _labDeserializers[type] = deserialize;
+    }
+    Labs.registerDeserializer = registerDeserializer;
+
+    /**
+    * Deserializes the given json object into an object. Should be used by component authors only.
+    *
+    * @param { json } The ILabObject to deserialize
+    */
+    function deserialize(json) {
+        if (!(json.type in _labDeserializers)) {
+            throw "Unknown type";
+        }
+
+        return _labDeserializers[json.type](json);
+    }
+    Labs.deserialize = deserialize;
+
+    /**
+    * Helper method to catch and throw if not connected
+    */
+    function checkIsConnected() {
+        if (_connectionState != Labs.ConnectionState.Connected) {
+            throw "API not initialized";
+        }
+    }
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Enum representing the internal state of the lab
+    */
+    var LabsInternalState;
+    (function (LabsInternalState) {
+        /**
+        * Initial state
+        */
+        LabsInternalState[LabsInternalState["None"] = 0] = "None";
+
+        /**
+        * Initialized state
+        */
+        LabsInternalState[LabsInternalState["Initialized"] = 1] = "Initialized";
+
+        /**
+        * LabsInternal has been disposed
+        */
+        LabsInternalState[LabsInternalState["Disposed"] = 2] = "Disposed";
+    })(LabsInternalState || (LabsInternalState = {}));
+
+    /**
+    * Class used to interface with the underlying ILabsHost interface.
+    */
+    var LabsInternal = (function () {
+        /**
+        * Constructs a new LabsInternal
+        *
+        * @param { labHost } The ILabHost to make use of
+        */
+        function LabsInternal(labHost) {
+            /**
+            * Current state of the LabsInternal
+            */
+            this._state = LabsInternalState.None;
+            /**
+            * Helper class to manage events in the system
+            */
+            this._eventManager = new Labs.EventManager();
+            /**
+            * The version of the host this LabsInternal is making use of
+            */
+            this._hostVersion = null;
+            /**
+            * Start out queueing pending messages until we are notified to invoke them
+            */
+            this._queuePendingMessages = true;
+            /**
+            * Pending messages to invoke from the EventManager
+            */
+            this._pendingMessages = [];
+            // Get the version info from the lab host - only support 0.1 hosts for now
+            var versions = labHost.getSupportedVersions();
+
+            var hasSupportedVersion = false;
+            for (var i = 0; i < versions.length; i++) {
+                if (versions[i].version.major === 0 && versions[i].version.minor <= 1) {
+                    hasSupportedVersion = true;
+                }
+            }
+
+            if (!hasSupportedVersion) {
+                throw "Unsupported host version";
+            }
+
+            this._labHost = labHost;
+        }
+        /**
+        * Connect to the host
+        *
+        * @param { callback } Callback that will return the IConnectionResponse when connected
+        */
+        LabsInternal.prototype.connect = function (callback) {
+            var _this = this;
+            if (this._state !== LabsInternalState.None) {
+                throw "Already initialized";
+            }
+
+            // initialize the host
+            this._labHost.connect(this._labHost.getSupportedVersions().splice(0), function (err, initialState) {
+                if (!err) {
+                    // Set the initialization state
+                    _this._state = LabsInternalState.Initialized;
+
+                    // Save the host version used
+                    _this._hostVersion = initialState.hostVersion;
+
+                    // Register for messages coming from the host
+                    _this._labHost.on(function (message, messageData) {
+                        if (_this._queuePendingMessages) {
+                            _this._pendingMessages.push({ message: message, messageData: messageData });
+                        } else {
+                            _this._eventManager.fire(message, messageData);
+                        }
+                    });
+                }
+
+                setTimeout(function () {
+                    return callback(err, initialState);
+                }, 0);
+            });
+        };
+
+        /**
+        * Fires all pending messages
+        */
+        LabsInternal.prototype.firePendingMessages = function () {
+            var _this = this;
+            this._queuePendingMessages = false;
+            this._pendingMessages.forEach(function (pendingMessage) {
+                _this._eventManager.fire(pendingMessage.message, pendingMessage.messageData);
+            });
+            this._pendingMessages = [];
+        };
+
+        /**
+        * Creates a new lab
+        *
+        * @param { callback } Callback fired once the create operation completes
+        */
+        LabsInternal.prototype.create = function (callback) {
+            this.checkIsInitialized();
+
+            this._labHost.create({}, function (err, editData) {
+                setTimeout(function () {
+                    return callback(err, editData);
+                });
+            });
+        };
+
+        /**
+        * Terminates the LabsInternal class and halts the connection.
+        */
+        LabsInternal.prototype.dispose = function () {
+            this.checkIsInitialized();
+
+            this._state = LabsInternalState.Disposed;
+            this._labHost.disconnect(function (err, data) {
+                if (err) {
+                    console.error("Labs.js: Error disconnecting from host.");
+                }
+            });
+        };
+
+        /**
+        * Adds an event handler for the given event
+        *
+        * @param { event } The event to listen for
+        * @param { handler } Handler fired for the given event
+        */
+        LabsInternal.prototype.on = function (event, handler) {
+            this.checkIsInitialized();
+
+            this._eventManager.add(event, handler);
+        };
+
+        /**
+        * Sends a message to the host
+        *
+        * @param { type } The type of message being sent
+        * @param { options } The options for that message
+        * @param { callback } Callback invoked once the message has been received
+        */
+        LabsInternal.prototype.sendMessage = function (type, options, callback) {
+            this.checkIsInitialized();
+
+            this._labHost.sendMessage(type, options, callback);
+        };
+
+        /**
+        * Removes an event handler for the given event
+        *
+        * @param { event } The event whose handler should be removed
+        * @param { handler } Handler to remove
+        */
+        LabsInternal.prototype.off = function (event, handler) {
+            this.checkIsInitialized();
+
+            this._eventManager.remove(event, handler);
+        };
+
+        /**
+        * Gets the current state of the lab for the user
+        *
+        * @param { callback } Callback that fires when the state is retrieved
+        */
+        LabsInternal.prototype.getState = function (callback) {
+            this.checkIsInitialized();
+
+            this._labHost.getState(callback);
+        };
+
+        /**
+        * Sets the state of the lab for the user
+        *
+        * @param { state } The state to set
+        * @param { callback } Callback fired once the state has been set
+        */
+        LabsInternal.prototype.setState = function (state, callback) {
+            this.checkIsInitialized();
+
+            this._labHost.setState(state, callback);
+        };
+
+        /**
+        * Gets the current lab configuration
+        *
+        * @param { callback } Callback that fires when the configuration is retrieved
+        */
+        LabsInternal.prototype.getConfiguration = function (callback) {
+            this.checkIsInitialized();
+
+            this._labHost.getConfiguration(callback);
+        };
+
+        /**
+        * Sets a new lab configuration
+        *
+        * @param { configuration } The lab configuration to set
+        * @param { callback } Callback that fires once the configuration has been set
+        */
+        LabsInternal.prototype.setConfiguration = function (configuration, callback) {
+            this.checkIsInitialized();
+
+            this._labHost.setConfiguration(configuration, callback);
+        };
+
+        /**
+        * Retrieves the configuration instance for the lab.
+        *
+        * @param { callback } Callback that fires when the configuration instance has been retrieved
+        */
+        LabsInternal.prototype.getConfigurationInstance = function (callback) {
+            this.checkIsInitialized();
+            this._labHost.getConfigurationInstance(callback);
+        };
+
+        LabsInternal.prototype.takeAction = function (type, options, result, callback) {
+            this.checkIsInitialized();
+
+            if (callback !== undefined) {
+                this._labHost.takeAction(type, options, result, callback);
+            } else {
+                this._labHost.takeAction(type, options, result);
+            }
+        };
+
+        /**
+        * Retrieves actions
+        *
+        * @param { type } The type of get to perform
+        * @param { options } The options associated with the get
+        * @param { callback } Callback that fires with the completed actions
+        */
+        LabsInternal.prototype.getActions = function (type, options, callback) {
+            this.checkIsInitialized();
+            this._labHost.getActions(type, options, callback);
+        };
+
+        /**
+        * Checks whether or not the LabsInternal is initialized
+        */
+        LabsInternal.prototype.checkIsInitialized = function () {
+            if (this._state !== LabsInternalState.Initialized) {
+                throw "Not initialized";
+            }
+        };
+        return LabsInternal;
+    })();
+    Labs.LabsInternal = LabsInternal;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Provides access to the labs.js timeline
+    */
+    var Timeline = (function () {
+        function Timeline(labsInternal) {
+            this._labsInternal = labsInternal;
+        }
+        /**
+        * Used to indicate that the timeline should advance to the next slide.
+        */
+        Timeline.prototype.next = function (completionStatus, callback) {
+            var options = {
+                status: completionStatus
+            };
+
+            this._labsInternal.sendMessage(Labs.TimelineNextMessageType, options, function (err, result) {
+                setTimeout(function () {
+                    return callback(err, null);
+                }, 0);
+            });
+        };
+        return Timeline;
+    })();
+    Labs.Timeline = Timeline;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * A ValueHolder is responsible for holding a value that when requested is tracked by labs.js.
+    * This value may be stored locally or stored on the server.
+    */
+    var ValueHolder = (function () {
+        /**
+        * Constructs a new ValueHolder
+        *
+        * @param { componentId } The component the value is associated with
+        * @param { attemptId } The attempt the value is associated with
+        * @param { id } The id of the value
+        * @param { labs } The labs device that can be used to request the value
+        * @param { isHint } Whether or not the value is a hint
+        * @param { hasBeenRequested } Whether or not the value has already been requested
+        * @param { hasValue } Whether or not the value is available
+        * @param { value } If hasValue is true this is the value, otherwise is optional
+        */
+        function ValueHolder(componentId, attemptId, id, labs, isHint, hasBeenRequested, hasValue, value) {
+            this._componentId = componentId;
+            this._attemptId = attemptId;
+            this.id = id;
+            this._labs = labs;
+            this.isHint = isHint;
+            this.hasBeenRequested = hasBeenRequested;
+            this.hasValue = hasValue;
+            this.value = value;
+        }
+        /**
+        * Retrieves the given value
+        *
+        * @param { callback } Callback that returns the given value
+        */
+        ValueHolder.prototype.getValue = function (callback) {
+            var _this = this;
+            if (this.hasValue && this.hasBeenRequested) {
+                setTimeout(function () {
+                    return callback(null, _this.value);
+                }, 0);
+                return;
+            }
+
+            // Otherwise construct the message to retrieve it and send it back
+            var options = {
+                componentId: this._componentId,
+                attemptId: this._attemptId,
+                valueId: this.id,
+                isHint: this.isHint
+            };
+            this._labs.takeAction(Labs.Core.Actions.GetValueAction, options, function (err, completedAction) {
+                if (!err) {
+                    var result = completedAction.result;
+                    _this.value = result.value;
+                    _this.hasValue = true;
+                    _this.hasBeenRequested = true;
+                }
+
+                setTimeout(function () {
+                    return callback(err, _this.value);
+                }, 0);
+            });
+        };
+
+        /**
+        * Internal method used to actually provide a value to the value holder
+        *
+        * @param { value } The value to set for the holder
+        */
+        ValueHolder.prototype.provideValue = function (value) {
+            this.value = value;
+            this.hasValue = true;
+            this.hasBeenRequested = true;
+        };
+        return ValueHolder;
+    })();
+    Labs.ValueHolder = ValueHolder;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsApi.js.map
+
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Base class for attempts
+        */
+        var ComponentAttempt = (function () {
+            /**
+            * Constructs a new ComponentAttempt.
+            *
+            * @param { labs } The LabsInternal to use with the attempt
+            * @param { attemptId } The ID associated with the attempt
+            * @param { values } The values associated with the attempt
+            */
+            function ComponentAttempt(labs, componentId, attemptId, values) {
+                // Whether or not the component has been resumed
+                this._resumed = false;
+                // Current state of the attempt
+                this._state = Labs.ProblemState.InProgress;
+                // Values associated with the attempt
+                this._values = {};
+                this._labs = labs;
+                this._id = attemptId;
+                this._componentId = componentId;
+
+                for (var key in values) {
+                    var valueHolderValues = [];
+                    var valueArray = values[key];
+                    for (var i = 0; i < valueArray.length; i++) {
+                        var value = valueArray[i];
+                        valueHolderValues.push(new Labs.ValueHolder(this._componentId, this._id, value.valueId, this._labs, value.isHint, false, value.hasValue, value.value));
+                    }
+
+                    this._values[key] = valueHolderValues;
+                }
+            }
+            /**
+            * Verifies that the attempt has been resumed
+            */
+            ComponentAttempt.prototype.verifyResumed = function () {
+                if (!this._resumed) {
+                    throw "Attempt has not yet been resumed";
+                }
+            };
+
+            /**
+            * Returns whether or not the app has been resumed
+            */
+            ComponentAttempt.prototype.isResumed = function () {
+                return this._resumed;
+            };
+
+            /**
+            * Used to indicate that the lab has resumed progress on the given attempt. Loads in existing data as part of this process. An attempt
+            * must be resumed before it can be used.
+            *
+            * @param { callback } Callback fired once the attempt is resumed
+            */
+            ComponentAttempt.prototype.resume = function (callback) {
+                var _this = this;
+                if (this._resumed) {
+                    throw "Already resumed";
+                }
+
+                var attemptSearch = {
+                    attemptId: this._id
+                };
+                this._labs.getActions(Labs.Core.GetActions.GetAttempt, attemptSearch, function (err, actions) {
+                    if (err) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        }, 0);
+                        return;
+                    }
+
+                    _this.resumeCore(actions);
+                    _this.sendResumeAction(function (resumeErr, data) {
+                        if (!resumeErr) {
+                            _this._resumed = true;
+                        }
+
+                        setTimeout(function () {
+                            return callback(err, data);
+                        });
+                    });
+                });
+            };
+
+            /**
+            * Helper method to send the resume action to the host
+            */
+            ComponentAttempt.prototype.sendResumeAction = function (callback) {
+                var resumeAttemptActon = {
+                    componentId: this._componentId,
+                    attemptId: this._id
+                };
+
+                this._labs.takeAction(Labs.Core.Actions.ResumeAttemptAction, resumeAttemptActon, function (err, data) {
+                    if (!err) {
+                    }
+
+                    setTimeout(function () {
+                        return callback(err, null);
+                    }, 0);
+                });
+            };
+
+            /**
+            * Runs over the retrieved actions for the attempt and populates the state of the lab
+            */
+            ComponentAttempt.prototype.resumeCore = function (actions) {
+                for (var i = 0; i < actions.length; i++) {
+                    var action = actions[i];
+                    this.processAction(action);
+                }
+            };
+
+            /**
+            * Retrieves the state of the lab
+            */
+            ComponentAttempt.prototype.getState = function () {
+                return this._state;
+            };
+
+            ComponentAttempt.prototype.processAction = function (action) {
+                if (action.type === Labs.Core.Actions.GetValueAction) {
+                    this.useValue(action);
+                } else if (action.type == Labs.Core.Actions.AttemptTimeoutAction) {
+                    this._state = Labs.ProblemState.Timeout;
+                }
+            };
+
+            /**
+            * Retrieves the cached values associated with the attempt
+            *
+            * @param { key } The key to lookup in the value map
+            */
+            ComponentAttempt.prototype.getValues = function (key) {
+                this.verifyResumed();
+
+                return this._values[key];
+            };
+
+            /**
+            * Makes use of a value in the value array
+            */
+            ComponentAttempt.prototype.useValue = function (completedSubmission) {
+                var useValueAction = completedSubmission.options;
+                var useValueResult = completedSubmission.result;
+
+                var valueId = useValueAction.valueId;
+
+                for (var key in this._values) {
+                    var valueArray = this._values[key];
+                    for (var i = 0; i < valueArray.length; i++) {
+                        if (valueArray[i].id === valueId) {
+                            valueArray[i].provideValue(useValueResult.value);
+                        }
+                    }
+                }
+            };
+            return ComponentAttempt;
+        })();
+        Components.ComponentAttempt = ComponentAttempt;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var __extends = this.__extends || function (d, b) {
+    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
+    function __() { this.constructor = d; }
+    __.prototype = b.prototype;
+    d.prototype = new __();
+};
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * A class representing an attempt at an activity component
+        */
+        var ActivityComponentAttempt = (function (_super) {
+            __extends(ActivityComponentAttempt, _super);
+            function ActivityComponentAttempt(labs, componentId, attemptId, values) {
+                _super.call(this, labs, componentId, attemptId, values);
+            }
+            /**
+            * Called to indicate that the activity has completed
+            *
+            * @param { callback } Callback invoked once the activity has completed
+            */
+            ActivityComponentAttempt.prototype.complete = function (callback) {
+                var _this = this;
+                var submitAnswer = {
+                    componentId: this._componentId,
+                    attemptId: this._id,
+                    answer: null
+                };
+
+                this._labs.takeAction(Labs.Core.Actions.SubmitAnswerAction, submitAnswer, null, function (err, completedAction) {
+                    if (err) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        }, 0);
+                        return;
+                    }
+
+                    _this._state = Labs.ProblemState.Completed;
+
+                    setTimeout(function () {
+                        return callback(null, null);
+                    }, 0);
+                });
+            };
+
+            /**
+            * Runs over the retrieved actions for the attempt and populates the state of the lab
+            */
+            ActivityComponentAttempt.prototype.processAction = function (action) {
+                if (action.type === Labs.Core.Actions.SubmitAnswerAction) {
+                    this._state = Labs.ProblemState.Completed;
+                } else if (action.type === Labs.Core.Actions.GetValueAction) {
+                    _super.prototype.processAction.call(this, action);
+                }
+            };
+            return ActivityComponentAttempt;
+        })(Components.ComponentAttempt);
+        Components.ActivityComponentAttempt = ActivityComponentAttempt;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        Components.ActivityComponentInstanceType = "Labs.Components.ActivityComponentInstance";
+
+        var ActivityComponentInstance = (function (_super) {
+            __extends(ActivityComponentInstance, _super);
+            /**
+            * Constructs a new ActivityComponentInstnace
+            *
+            * @param { component } The IActivityComponentInstance to create this class from
+            */
+            function ActivityComponentInstance(component) {
+                _super.call(this);
+                this.component = component;
+            }
+            /**
+            * Builds a new ActivityComponentAttempt. Implements abstract method defined on the base class.
+            *
+            * @param { createAttemptResult } The result from a create attempt action
+            */
+            ActivityComponentInstance.prototype.buildAttempt = function (createAttemptAction) {
+                var id = (createAttemptAction.result).attemptId;
+                return new Components.ActivityComponentAttempt(this._labs, this.component.componentId, id, this.component.values);
+            };
+            return ActivityComponentInstance;
+        })(Labs.ComponentInstance);
+        Components.ActivityComponentInstance = ActivityComponentInstance;
+
+        // Register the deserializer for this type. This will cause all components to make use of this class.
+        Labs.registerDeserializer(Components.ActivityComponentInstanceType, function (json) {
+            return new ActivityComponentInstance(json);
+        });
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Answer to a choice component problem
+        */
+        var ChoiceComponentAnswer = (function () {
+            /**
+            * Constructs a new ChoiceComponentAnswer
+            */
+            function ChoiceComponentAnswer(answer) {
+                this.answer = answer;
+            }
+            return ChoiceComponentAnswer;
+        })();
+        Components.ChoiceComponentAnswer = ChoiceComponentAnswer;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * A class representing an attempt at a choice component
+        */
+        var ChoiceComponentAttempt = (function (_super) {
+            __extends(ChoiceComponentAttempt, _super);
+            /**
+            * Constructs a new ChoiceComponentAttempt.
+            *
+            * @param { labs } The LabsInternal to use with the attempt
+            * @param { attemptId } The ID associated with the attempt
+            * @param { values } The values associated with the attempt
+            */
+            function ChoiceComponentAttempt(labs, componentId, attemptId, values) {
+                _super.call(this, labs, componentId, attemptId, values);
+                // Submissions associated with the attempt
+                this._submissions = [];
+            }
+            /**
+            * Used to mark that the lab has timed out
+            *
+            * @param { callback } Callback fired once the server has received the timeout message
+            */
+            ChoiceComponentAttempt.prototype.timeout = function (callback) {
+                var _this = this;
+                this._labs.takeAction(Labs.Core.Actions.AttemptTimeoutAction, { attemptId: this._id }, function (err, result) {
+                    if (!err) {
+                        _this._state = Labs.ProblemState.Timeout;
+                    }
+
+                    setTimeout(function () {
+                        return callback(err, null);
+                    }, 0);
+                });
+            };
+
+            /**
+            * Retrieves all of the submissions that have previously been submitted for the given attempt
+            */
+            ChoiceComponentAttempt.prototype.getSubmissions = function () {
+                this.verifyResumed();
+
+                return this._submissions;
+            };
+
+            /**
+            * Submits a new answer that was graded by the lab and will not use the host to compute a grade.
+            *
+            * @param { answer } The answer for the attempt
+            * @param { result } The result of the submission
+            * @param { callback } Callback fired once the submission has been received
+            */
+            ChoiceComponentAttempt.prototype.submit = function (answer, result, callback) {
+                var _this = this;
+                this.verifyResumed();
+
+                var submitAnswer = {
+                    componentId: this._componentId,
+                    attemptId: this._id,
+                    answer: answer.answer
+                };
+
+                var submitResult = {
+                    submissionId: null,
+                    complete: result.complete,
+                    score: result.score
+                };
+
+                this._labs.takeAction(Labs.Core.Actions.SubmitAnswerAction, submitAnswer, submitResult, function (err, completedAction) {
+                    if (err) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        }, 0);
+                        return;
+                    }
+
+                    var submission = _this.storeSubmission(completedAction);
+
+                    setTimeout(function () {
+                        return callback(null, submission);
+                    }, 0);
+                });
+            };
+
+            ChoiceComponentAttempt.prototype.processAction = function (action) {
+                if (action.type === Labs.Core.Actions.SubmitAnswerAction) {
+                    this.storeSubmission(action);
+                } else {
+                    _super.prototype.processAction.call(this, action);
+                }
+            };
+
+            /**
+            * Helper method used to handle a returned submission from labs core
+            */
+            ChoiceComponentAttempt.prototype.storeSubmission = function (completedSubmission) {
+                var options = completedSubmission.options;
+                var result = completedSubmission.result;
+
+                if (result.complete) {
+                    this._state = Labs.ProblemState.Completed;
+                }
+
+                var submission = new Components.ChoiceComponentSubmission(new Components.ChoiceComponentAnswer(options.answer), new Components.ChoiceComponentResult(result.score, result.complete), completedSubmission.time);
+
+                this._submissions.push(submission);
+
+                return submission;
+            };
+            return ChoiceComponentAttempt;
+        })(Components.ComponentAttempt);
+        Components.ChoiceComponentAttempt = ChoiceComponentAttempt;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * The name of the component instance. A choice component is a component that has multiple choice options and supports zero
+        * or more responses. Optionally there is a correct list of choices.
+        */
+        Components.ChoiceComponentInstanceType = "Labs.Components.ChoiceComponentInstance";
+
+        /**
+        * Class representing a choice component instance
+        */
+        var ChoiceComponentInstance = (function (_super) {
+            __extends(ChoiceComponentInstance, _super);
+            /**
+            * Constructs a new ChoiceComponentInstance
+            *
+            * @param { component } The IChoiceComponentInstance to create this class from
+            */
+            function ChoiceComponentInstance(component) {
+                _super.call(this);
+                this.component = component;
+            }
+            /**
+            * Builds a new ChoiceComponentAttempt. Implements abstract method defined on the base class.
+            *
+            * @param { createAttemptResult } The result from a create attempt action
+            */
+            ChoiceComponentInstance.prototype.buildAttempt = function (createAttemptAction) {
+                var id = (createAttemptAction.result).attemptId;
+                return new Components.ChoiceComponentAttempt(this._labs, this.component.componentId, id, this.component.values);
+            };
+            return ChoiceComponentInstance;
+        })(Labs.ComponentInstance);
+        Components.ChoiceComponentInstance = ChoiceComponentInstance;
+
+        // Register the deserializer for this type. This will cause all components to make use of this class.
+        Labs.registerDeserializer(Components.ChoiceComponentInstanceType, function (json) {
+            return new ChoiceComponentInstance(json);
+        });
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * The name of the component instance. A dynamic component is a component that allows for new components to be inserted within it.
+        */
+        Components.DynamicComponentInstanceType = "Labs.Components.DynamicComponentInstance";
+
+        /**
+        * Class representing a dynamic component. A dynamic component is used to create, at runtime, new components.
+        */
+        var DynamicComponentInstance = (function (_super) {
+            __extends(DynamicComponentInstance, _super);
+            /**
+            * Constructs a new dynamic component instance from the provided definition
+            */
+            function DynamicComponentInstance(component) {
+                _super.call(this);
+                this.component = component;
+            }
+            /**
+            * Retrieves all the components created by this dynamic component.
+            */
+            DynamicComponentInstance.prototype.getComponents = function (callback) {
+                var _this = this;
+                var componentSearch = {
+                    componentId: this._id,
+                    action: Labs.Core.Actions.CreateComponentAction
+                };
+
+                this._labs.getActions(Labs.Core.GetActions.GetComponentActions, componentSearch, function (err, actions) {
+                    var components = actions.map(function (action) {
+                        return _this.createComponentInstance(action);
+                    });
+                    setTimeout(function () {
+                        return callback(null, components);
+                    }, 0);
+                });
+            };
+
+            /**
+            * Creates a new component.
+            */
+            DynamicComponentInstance.prototype.createComponent = function (component, callback) {
+                var _this = this;
+                var options = {
+                    componentId: this._id,
+                    component: component
+                };
+
+                this._labs.takeAction(Labs.Core.Actions.CreateComponentAction, options, function (err, result) {
+                    var instance = null;
+                    if (!err) {
+                        instance = _this.createComponentInstance(result);
+                    }
+
+                    setTimeout(function () {
+                        return callback(err, instance);
+                    }, 0);
+                });
+            };
+
+            DynamicComponentInstance.prototype.createComponentInstance = function (action) {
+                var componentInstanceDefinition = (action.result).componentInstance;
+                var componentInstance = Labs.deserialize(componentInstanceDefinition);
+                componentInstance.attach(componentInstanceDefinition.componentId, this._labs);
+                return componentInstance;
+            };
+
+            /**
+            * Used to indicate that there will be no more submissions associated with this component
+            */
+            DynamicComponentInstance.prototype.close = function (callback) {
+                var _this = this;
+                this.isClosed(function (err, closed) {
+                    if (err) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        });
+                        return;
+                    }
+
+                    var options = {
+                        componentId: _this._id
+                    };
+                    _this._labs.takeAction(Labs.Core.Actions.CloseComponentAction, options, null, function (err, action) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        });
+                    });
+                });
+            };
+
+            /**
+            * Returns whether or not the dynamic component is closed
+            */
+            DynamicComponentInstance.prototype.isClosed = function (callback) {
+                var componentSearch = {
+                    componentId: this._id,
+                    action: Labs.Core.Actions.CloseComponentAction
+                };
+
+                this._labs.getActions(Labs.Core.GetActions.GetComponentActions, componentSearch, function (err, actions) {
+                    if (err) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        }, 0);
+                    } else {
+                        var closed = actions.length > 0;
+                        setTimeout(function () {
+                            return callback(null, closed);
+                        }, 0);
+                    }
+                });
+            };
+            return DynamicComponentInstance;
+        })(Labs.ComponentInstanceBase);
+        Components.DynamicComponentInstance = DynamicComponentInstance;
+
+        // Register the deserializer for this type. This will cause all components to make use of this class.
+        Labs.registerDeserializer(Components.DynamicComponentInstanceType, function (json) {
+            return new DynamicComponentInstance(json);
+        });
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Type string for an ActivityComponent
+        */
+        Components.ActivityComponentType = "Labs.Components.ActivityComponent";
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Type string to use with this type of component
+        */
+        Components.ChoiceComponentType = "Labs.Components.ChoiceComponent";
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        Components.Infinite = -1;
+
+        /**
+        * Type string for a dynamic component
+        */
+        Components.DynamicComponentType = "Labs.Components.DynamicComponent";
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Type string to use with this type of component
+        */
+        Components.InputComponentType = "Labs.Components.InputComponent";
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Answer to an input component problem
+        */
+        var InputComponentAnswer = (function () {
+            /**
+            * Constructs a new InputComponentAnswer
+            */
+            function InputComponentAnswer(answer) {
+                this.answer = answer;
+            }
+            return InputComponentAnswer;
+        })();
+        Components.InputComponentAnswer = InputComponentAnswer;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * A class representing an attempt at an input component
+        */
+        var InputComponentAttempt = (function (_super) {
+            __extends(InputComponentAttempt, _super);
+            function InputComponentAttempt(labs, componentId, attemptId, values) {
+                _super.call(this, labs, componentId, attemptId, values);
+                // Submissions associated with the attempt
+                this._submissions = [];
+            }
+            /**
+            * Runs over the retrieved actions for the attempt and populates the state of the lab
+            */
+            InputComponentAttempt.prototype.processAction = function (action) {
+                if (action.type === Labs.Core.Actions.SubmitAnswerAction) {
+                    this.storeSubmission(action);
+                } else {
+                    _super.prototype.processAction.call(this, action);
+                }
+            };
+
+            /**
+            * Retrieves all of the submissions that have previously been submitted for the given attempt
+            */
+            InputComponentAttempt.prototype.getSubmissions = function () {
+                this.verifyResumed();
+
+                return this._submissions;
+            };
+
+            /**
+            * Submits a new answer that was graded by the lab and will not use the host to compute a grade.
+            *
+            * @param { answer } The answer for the attempt
+            * @param { result } The result of the submission
+            * @param { callback } Callback fired once the submission has been received
+            */
+            InputComponentAttempt.prototype.submit = function (answer, result, callback) {
+                var _this = this;
+                this.verifyResumed();
+
+                var submitAnswer = {
+                    componentId: this._componentId,
+                    attemptId: this._id,
+                    answer: answer.answer
+                };
+
+                var submitResult = {
+                    submissionId: null,
+                    complete: result.complete,
+                    score: result.score
+                };
+
+                this._labs.takeAction(Labs.Core.Actions.SubmitAnswerAction, submitAnswer, submitResult, function (err, completedAction) {
+                    if (err) {
+                        setTimeout(function () {
+                            return callback(err, null);
+                        }, 0);
+                        return;
+                    }
+
+                    var submission = _this.storeSubmission(completedAction);
+
+                    setTimeout(function () {
+                        return callback(null, submission);
+                    }, 0);
+                });
+            };
+
+            /**
+            * Helper method used to handle a returned submission from labs core
+            */
+            InputComponentAttempt.prototype.storeSubmission = function (completedSubmission) {
+                var options = completedSubmission.options;
+                var result = completedSubmission.result;
+
+                if (result.complete) {
+                    this._state = Labs.ProblemState.Completed;
+                }
+
+                var submission = new Components.InputComponentSubmission(new Components.InputComponentAnswer(options.answer), new Components.InputComponentResult(result.score, result.complete), completedSubmission.time);
+
+                this._submissions.push(submission);
+
+                return submission;
+            };
+            return InputComponentAttempt;
+        })(Components.ComponentAttempt);
+        Components.InputComponentAttempt = InputComponentAttempt;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * The name of the component instance. An input component is a component that allows free form
+        * input from a user.
+        */
+        Components.InputComponentInstanceType = "Labs.Components.InputComponentInstance";
+
+        /**
+        * Class representing an input component instance
+        */
+        var InputComponentInstance = (function (_super) {
+            __extends(InputComponentInstance, _super);
+            /**
+            * Constructs a new InputComponentInstance
+            *
+            * @param { component } The IInputComponentInstance to create this class from
+            */
+            function InputComponentInstance(component) {
+                _super.call(this);
+                this.component = component;
+            }
+            /**
+            * Builds a new InputComponentAttempt. Implements abstract method defined on the base class.
+            *
+            * @param { createAttemptResult } The result from a create attempt action
+            */
+            InputComponentInstance.prototype.buildAttempt = function (createAttemptAction) {
+                var id = (createAttemptAction.result).attemptId;
+                return new Components.InputComponentAttempt(this._labs, this.component.componentId, id, this.component.values);
+            };
+            return InputComponentInstance;
+        })(Labs.ComponentInstance);
+        Components.InputComponentInstance = InputComponentInstance;
+
+        // Register the deserializer for this type. This will cause all components to make use of this class.
+        Labs.registerDeserializer(Components.InputComponentInstanceType, function (json) {
+            return new InputComponentInstance(json);
+        });
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * The result of an input component submission
+        */
+        var InputComponentResult = (function () {
+            /**
+            * Constructs a new InputComponentResult
+            *
+            * @param { score } The score of the result
+            * @param { complete } Whether or not the result completed the attempt
+            */
+            function InputComponentResult(score, complete) {
+                this.score = score;
+                this.complete = complete;
+            }
+            return InputComponentResult;
+        })();
+        Components.InputComponentResult = InputComponentResult;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Class that represents an input component submission
+        */
+        var InputComponentSubmission = (function () {
+            /**
+            * Constructs a new InputComponentSubmission
+            *
+            * @param { answer } The answer associated with the submission
+            * @param { result } The result of the submission
+            * @param { time } The time at which the submission was received
+            */
+            function InputComponentSubmission(answer, result, time) {
+                this.answer = answer;
+                this.result = result;
+                this.time = time;
+            }
+            return InputComponentSubmission;
+        })();
+        Components.InputComponentSubmission = InputComponentSubmission;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * State values for a lab
+    */
+    (function (ProblemState) {
+        /**
+        * The problem is in progress
+        */
+        ProblemState[ProblemState["InProgress"] = 0] = "InProgress";
+
+        /**
+        * The problem has timed out
+        */
+        ProblemState[ProblemState["Timeout"] = 1] = "Timeout";
+
+        /**
+        * The problem has completed
+        */
+        ProblemState[ProblemState["Completed"] = 2] = "Completed";
+    })(Labs.ProblemState || (Labs.ProblemState = {}));
+    var ProblemState = Labs.ProblemState;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * The result of a choice component submission
+        */
+        var ChoiceComponentResult = (function () {
+            /**
+            * Constructs a new ChoiceComponentResult
+            *
+            * @param { score } The score of the result
+            * @param { complete } Whether or not the result completed the attempt
+            */
+            function ChoiceComponentResult(score, complete) {
+                this.score = score;
+                this.complete = complete;
+            }
+            return ChoiceComponentResult;
+        })();
+        Components.ChoiceComponentResult = ChoiceComponentResult;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Components) {
+        /**
+        * Class that represents a choice component submission
+        */
+        var ChoiceComponentSubmission = (function () {
+            /**
+            * Constructs a new ChoiceComponentSubmission
+            *
+            * @param { answer } The answer associated with the submission
+            * @param { result } The result of the submission
+            * @param { time } The time at which the submission was received
+            */
+            function ChoiceComponentSubmission(answer, result, time) {
+                this.answer = answer;
+                this.result = result;
+                this.time = time;
+            }
+            return ChoiceComponentSubmission;
+        })();
+        Components.ChoiceComponentSubmission = ChoiceComponentSubmission;
+    })(Labs.Components || (Labs.Components = {}));
+    var Components = Labs.Components;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsComponents.js.map
+
+var Labs;
+(function (Labs) {
+    /**
+    * General command used to pass messages between the client and host
+    */
+    var Command = (function () {
+        /**
+        * Constructs a new command
+        *
+        * @param { type } The type of command
+        * @param { commandData } Optional data associated with the command
+        */
+        function Command(type, commandData) {
+            this.type = type;
+            this.commandData = commandData;
+        }
+        return Command;
+    })();
+    Labs.Command = Command;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Strings representing supported command types
+    */
+    (function (CommandType) {
+        CommandType.Connect = "connect";
+
+        CommandType.Disconnect = "disconnect";
+
+        CommandType.Create = "create";
+
+        CommandType.GetConfigurationInstance = "getConfigurationInstance";
+
+        CommandType.TakeAction = "takeAction";
+
+        CommandType.GetCompletedActions = "getCompletedActions";
+
+        CommandType.ModeChanged = "modeChanged";
+
+        CommandType.GetConfiguration = "getConfiguration";
+
+        CommandType.SetConfiguration = "setConfiguratoin";
+
+        CommandType.GetState = "getState";
+
+        CommandType.SetState = "setState";
+
+        CommandType.SendMessage = "sendMessage";
+    })(Labs.CommandType || (Labs.CommandType = {}));
+    var CommandType = Labs.CommandType;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    (function (Core) {
+        /**
+        * Static class containing the different event types.
+        */
+        var EventTypes = (function () {
+            function EventTypes() {
+            }
+            EventTypes.ModeChanged = "modeChanged";
+
+            EventTypes.Activate = "activate";
+
+            EventTypes.Deactivate = "deactivate";
+            return EventTypes;
+        })();
+        Core.EventTypes = EventTypes;
+    })(Labs.Core || (Labs.Core = {}));
+    var Core = Labs.Core;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    /**
+    * Type of message being sent over the wire
+    */
+    (function (MessageType) {
+        MessageType[MessageType["Message"] = 0] = "Message";
+        MessageType[MessageType["Completion"] = 1] = "Completion";
+        MessageType[MessageType["Failure"] = 2] = "Failure";
+    })(Labs.MessageType || (Labs.MessageType = {}));
+    var MessageType = Labs.MessageType;
+
+    /**
+    * The message being sent
+    */
+    var Message = (function () {
+        function Message(id, labId, type, payload) {
+            this.id = id;
+            this.labId = labId;
+            this.type = type;
+            this.payload = payload;
+        }
+        return Message;
+    })();
+    Labs.Message = Message;
+
+    var MessageProcessor = (function () {
+        function MessageProcessor(labId, targetOrigin, messageHandler) {
+            this._labId = labId;
+            this.isStarted = false;
+            this.nextMessageId = 0;
+            this.targetOrigin = targetOrigin;
+            this.messageHandler = messageHandler;
+            this.messageMap = {};
+        }
+        MessageProcessor.prototype.throwIfNotStarted = function () {
+            if (!this.isStarted) {
+                throw "Processor has not been started";
+            }
+        };
+
+        MessageProcessor.prototype.getNextMessageId = function () {
+            return this.nextMessageId++;
+        };
+
+        ///
+        /// Given a URI parses it and returns the origin to use in postMessage security checks
+        ///
+        MessageProcessor.prototype.parseOrigin = function (href) {
+            var parser = document.createElement('a');
+            parser.href = href;
+            return parser.protocol + "//" + parser.host;
+        };
+
+        MessageProcessor.prototype.listener = function (event) {
+            var _this = this;
+            var response;
+
+            // Get the message - we only listen to events going to our lab ID and that are valid JSON
+            var messageEvent = event;
+            var message;
+            try  {
+                message = JSON.parse(messageEvent.data);
+            } catch (exception) {
+                return;
+            }
+
+            if (message.labId !== this._labId) {
+                return;
+            }
+
+            if (message.type === MessageType.Completion) {
+                response = this.messageMap[message.id];
+                delete this.messageMap[message.id];
+
+                if (response.origin === messageEvent.source) {
+                    response.callback(null, message.payload);
+                }
+            } else if (message.type === MessageType.Failure) {
+                response = this.messageMap[message.id];
+                delete this.messageMap[message.id];
+
+                if (response.origin === messageEvent.source) {
+                    response.callback({ error: message.payload }, null);
+                }
+            } else if (message.type == MessageType.Message) {
+                this.messageHandler(messageEvent.source, message.payload, function (err, data) {
+                    if (err) {
+                        var failureMessage = new Message(message.id, _this._labId, MessageType.Failure, data);
+                        _this.postMessage(messageEvent.source, failureMessage);
+                    } else {
+                        var acknowledgementMessage = new Message(message.id, _this._labId, MessageType.Completion, data);
+                        _this.postMessage(messageEvent.source, acknowledgementMessage);
+                    }
+                });
+            } else {
+                throw "Unknown message type";
+            }
+        };
+
+        MessageProcessor.prototype.postMessage = function (targetWindow, message) {
+            if (!targetWindow) {
+                throw "Unknown target window";
+            }
+
+            targetWindow.postMessage(JSON.stringify(message), this.targetOrigin);
+        };
+
+        MessageProcessor.prototype.start = function () {
+            var _this = this;
+            if (this.isStarted) {
+                throw "Processor already running";
+            }
+
+            this.eventListener = function (event) {
+                _this.listener(event);
+            };
+            window.addEventListener("message", this.eventListener);
+            this.isStarted = true;
+        };
+
+        MessageProcessor.prototype.stop = function () {
+            this.throwIfNotStarted();
+
+            window.removeEventListener("message", this.eventListener);
+            this.isStarted = false;
+        };
+
+        MessageProcessor.prototype.sendMessage = function (targetWindow, data, callback) {
+            this.throwIfNotStarted();
+
+            var nextId = this.getNextMessageId();
+            var message = new Message(nextId, this._labId, MessageType.Message, data);
+            this.postMessage(targetWindow, message);
+            this.messageMap[nextId] = {
+                origin: targetWindow,
+                callback: callback
+            };
+        };
+        return MessageProcessor;
+    })();
+    Labs.MessageProcessor = MessageProcessor;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsHostsCore.js.map
+
+var Labs;
+(function (Labs) {
+    var InMemoryLabHost = (function () {
+        function InMemoryLabHost(version) {
+            this._labState = new Labs.InMemoryLabState();
+            this._messages = [];
+            this._version = version;
+        }
+        //
+        // Retrieves the version of the lab host
+        //
+        InMemoryLabHost.prototype.getSupportedVersions = function () {
+            return [{ version: this._version }];
+        };
+
+        //
+        // Initializes communication with the host
+        //
+        InMemoryLabHost.prototype.connect = function (versions, callback) {
+            var connectionResponse = {
+                initializationInfo: {
+                    hostVersion: this._version
+                },
+                hostVersion: {
+                    major: 0,
+                    minor: 1
+                },
+                userInfo: {
+                    id: "TestUserId",
+                    permissions: [
+                        Labs.Core.Permissions.Edit,
+                        Labs.Core.Permissions.Take
+                    ]
+                },
+                applicationId: "TestAppId",
+                mode: Labs.Core.LabMode.Edit
+            };
+            setTimeout(function () {
+                return callback(null, connectionResponse);
+            }, 0);
+        };
+
+        //
+        // Stops communication with the host
+        //
+        InMemoryLabHost.prototype.disconnect = function (callback) {
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+
+        //
+        // Adds an event handler for dealing with messages coming from the host. The resolved promsie
+        // will be returned back to the host
+        //
+        InMemoryLabHost.prototype.on = function (handler) {
+        };
+
+        //
+        // Sends a message to the host. The in memory host simply stores it and replies back.
+        //
+        InMemoryLabHost.prototype.sendMessage = function (type, options, callback) {
+            this._messages.push({
+                type: type,
+                options: options,
+                response: null
+            });
+            setTimeout(function () {
+                return callback(null, null);
+            });
+        };
+
+        InMemoryLabHost.prototype.getMessages = function () {
+            return this._messages;
+        };
+
+        InMemoryLabHost.prototype.create = function (options, callback) {
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+
+        //
+        // Gets the current lab configuration from the host
+        //
+        InMemoryLabHost.prototype.getConfiguration = function (callback) {
+            var configuration = this._labState.getConfiguration();
+            setTimeout(function () {
+                return callback(null, configuration);
+            }, 0);
+        };
+
+        //
+        // Sets a new lab configuration on the host
+        //
+        InMemoryLabHost.prototype.setConfiguration = function (configuration, callback) {
+            this._labState.setConfiguration(configuration);
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+
+        //
+        // Gets the current state of the lab for the user
+        //
+        InMemoryLabHost.prototype.getState = function (callback) {
+            var state = this._labState.getState();
+            setTimeout(function () {
+                return callback(null, state);
+            });
+        };
+
+        //
+        // Sets the state of the lab for the user
+        //
+        InMemoryLabHost.prototype.setState = function (state, callback) {
+            this._labState.setState(state);
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+
+        InMemoryLabHost.prototype.getConfigurationInstance = function (callback) {
+            var configurationInstance = this._labState.getConfigurationInstance();
+            setTimeout(function () {
+                return callback(null, configurationInstance);
+            }, 0);
+        };
+
+        InMemoryLabHost.prototype.takeAction = function (type, options, result, callback) {
+            var translatedCallback = callback !== undefined ? callback : result;
+            var translatedResult = callback !== undefined ? result : null;
+
+            var action = this._labState.takeAction(type, options, translatedResult);
+            setTimeout(function () {
+                return translatedCallback(null, action);
+            }, 0);
+        };
+
+        InMemoryLabHost.prototype.getActions = function (type, options, callback) {
+            var actions = this._labState.getActions(type, options);
+            setTimeout(function () {
+                return callback(null, actions);
+            }, 0);
+        };
+        return InMemoryLabHost;
+    })();
+    Labs.InMemoryLabHost = InMemoryLabHost;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    ;
+
+    var InMemoryLabState = (function () {
+        function InMemoryLabState() {
+            this._configuration = null;
+            this._configurationInstance = null;
+            this._state = null;
+            this._actions = [];
+            this._nextId = 0;
+            this._componentInstances = {};
+        }
+        InMemoryLabState.prototype.getConfiguration = function () {
+            return this._configuration;
+        };
+
+        InMemoryLabState.prototype.setConfiguration = function (configuration) {
+            this._configuration = configuration;
+            this._configurationInstance = null;
+            this._state = null;
+            this._actions = [];
+            this._componentInstances = {};
+        };
+
+        InMemoryLabState.prototype.getState = function () {
+            return this._state;
+        };
+
+        InMemoryLabState.prototype.setState = function (state) {
+            this._state = state;
+        };
+
+        InMemoryLabState.prototype.getConfigurationInstance = function () {
+            if (!this._configurationInstance) {
+                this._configurationInstance = this.getConfigurationInstanceFromConfiguration(this._configuration);
+            }
+
+            return this._configurationInstance;
+        };
+
+        InMemoryLabState.prototype.getConfigurationInstanceFromConfiguration = function (configuration) {
+            var _this = this;
+            if (!configuration) {
+                return null;
+            }
+
+            var components = configuration.components.map(function (component) {
+                return _this.getAndStoreComponentInstanceFromComponent(component);
+            });
+            return {
+                appVersion: configuration.appVersion,
+                components: components,
+                name: configuration.name,
+                timeline: configuration.timeline
+            };
+        };
+
+        InMemoryLabState.prototype.getAndStoreComponentInstanceFromComponent = function (component) {
+            var instance = JSON.parse(JSON.stringify(component));
+            var componentId = this._nextId++;
+            instance.componentId = componentId.toString();
+
+            if (component.type === Labs.Components.ChoiceComponentType) {
+                instance.type = Labs.Components.ChoiceComponentInstanceType;
+            } else if (component.type === Labs.Components.InputComponentType) {
+                instance.type = Labs.Components.InputComponentInstanceType;
+            } else if (component.type === Labs.Components.ActivityComponentType) {
+                instance.type = Labs.Components.ActivityComponentInstanceType;
+            } else if (component.type === Labs.Components.DynamicComponentType) {
+                instance.type = Labs.Components.DynamicComponentInstanceType;
+            } else {
+                throw "unknown type";
+            }
+
+            for (var key in instance.values) {
+                var values = instance.values[key];
+                for (var i = 0; i < values.length; i++) {
+                    var valueId = this._nextId++;
+                    values[i].valueId = valueId.toString();
+                }
+            }
+
+            this._componentInstances[instance.componentId] = {
+                component: component,
+                instance: instance
+            };
+            return instance;
+        };
+
+        InMemoryLabState.prototype.takeAction = function (type, options, result) {
+            return this.takeActionCore(type, options, result);
+        };
+
+        InMemoryLabState.prototype.takeActionCore = function (type, options, result) {
+            if (result === null) {
+                if (type === Labs.Core.Actions.CreateAttemptAction) {
+                    var attemptId = this._nextId++;
+                    var createResult = {
+                        attemptId: attemptId.toString()
+                    };
+
+                    result = createResult;
+                } else if (type === Labs.Core.Actions.GetValueAction) {
+                    var optionsAsGetValueOptions = options;
+                    var getValueResult = {
+                        value: this.findConfigurationValue(optionsAsGetValueOptions.componentId, optionsAsGetValueOptions.attemptId, optionsAsGetValueOptions.valueId)
+                    };
+
+                    result = getValueResult;
+                } else if (type === Labs.Core.Actions.CreateComponentAction) {
+                    var createComponentOptions = options;
+                    var createdInstance = this.getAndStoreComponentInstanceFromComponent(createComponentOptions.component);
+                    var createComponentResult = {
+                        componentInstance: createdInstance
+                    };
+
+                    result = createComponentResult;
+                } else if (type === Labs.Core.Actions.SubmitAnswerAction) {
+                    // Currently assuming activity components only
+                    var submissionId = this._nextId++;
+                    var submitAnswerResult = {
+                        submissionId: submissionId.toString(),
+                        complete: true,
+                        score: null
+                    };
+                    result = submitAnswerResult;
+                }
+            } else {
+                if (type === Labs.Core.Actions.SubmitAnswerAction) {
+                    var submissionId = this._nextId++;
+                    var resultsAsSubmitResults = result;
+                    resultsAsSubmitResults.submissionId = submissionId.toString();
+                }
+            }
+
+            // Store and return the completed action
+            var completedAction = {
+                type: type,
+                options: options,
+                result: result,
+                time: Date.now()
+            };
+            this._actions.push(completedAction);
+
+            return completedAction;
+        };
+
+        InMemoryLabState.prototype.findConfigurationValue = function (componentId, attemptId, valueId) {
+            var storedComponent = this._componentInstances[componentId];
+
+            if (storedComponent) {
+                for (var key in storedComponent.instance.values) {
+                    var values = storedComponent.instance.values[key];
+                    for (var i = 0; i < values.length; i++) {
+                        if (values[i].valueId === valueId) {
+                            return storedComponent.component.values[key][i].value;
+                        }
+                    }
+                }
+            }
+
+            throw "not found";
+        };
+
+        InMemoryLabState.prototype.getAllActions = function () {
+            return this._actions;
+        };
+
+        InMemoryLabState.prototype.setActions = function (actions) {
+            this._actions = actions;
+        };
+
+        InMemoryLabState.prototype.getActions = function (type, options) {
+            var completedActions = [];
+            var i;
+            var completedAction;
+
+            if (type === Labs.Core.GetActions.GetAttempt) {
+                var actionAsGetAttempt = options;
+
+                for (i = 0; i < this._actions.length; i++) {
+                    completedAction = this._actions[i];
+                    if ((completedAction.options).attemptId === actionAsGetAttempt.attemptId) {
+                        completedActions.push(completedAction);
+                    }
+                }
+            } else if (type === Labs.Core.GetActions.GetComponentActions) {
+                var actionAsGetComponentActions = options;
+
+                for (i = 0; i < this._actions.length; i++) {
+                    completedAction = this._actions[i];
+                    if (completedAction.type === actionAsGetComponentActions.action && (completedAction.options).componentId === actionAsGetComponentActions.componentId) {
+                        completedActions.push(completedAction);
+                    }
+                }
+            } else {
+                throw "Unknown get results action";
+            }
+
+            // Return the final results
+            return completedActions;
+        };
+        return InMemoryLabState;
+    })();
+    Labs.InMemoryLabState = InMemoryLabState;
+})(Labs || (Labs = {}));
+;
+
+var Office;
+
+var Labs;
+(function (Labs) {
+    ;
+
+    var Resolver = (function () {
+        function Resolver() {
+            var _this = this;
+            this._callbacks = [];
+            this._isResolved = false;
+            this.promise = {
+                then: function (callback) {
+                    _this._callbacks.push(callback);
+                    if (_this._isResolved) {
+                        _this.fireCallbacks();
+                    }
+                }
+            };
+        }
+        Resolver.prototype.resolve = function (value) {
+            this._isResolved = true;
+            this._resolvedValue = value;
+            this.fireCallbacks();
+        };
+
+        Resolver.prototype.fireCallbacks = function () {
+            var _this = this;
+            this._callbacks.forEach(function (callback) {
+                callback(_this._resolvedValue);
+            });
+
+            this._callbacks = [];
+        };
+        return Resolver;
+    })();
+    Labs.Resolver = Resolver;
+    ;
+
+    var OfficeJSLabHost = (function () {
+        function OfficeJSLabHost() {
+            var _this = this;
+            this._version = { version: { major: 0, minor: 1 } };
+            var resolver = new Resolver();
+            this._officeInitialized = resolver.promise;
+
+            Office.initialize = function () {
+                // retrieve the configuration - this will tell us if we have been published or not - and then
+                // use this to determine which host to make use of
+                var labsSettings = Office.context.document.settings.get(OfficeJSLabHost.SettingsKeyName);
+
+                if (labsSettings && labsSettings.published) {
+                    _this._labHost = new Labs.PostMessageLabHost(labsSettings.publishedAppId, parent.parent, "*");
+                } else {
+                    _this._labHost = new Labs.RichClientOfficeJSLabsHost(labsSettings ? labsSettings.configuration : null, labsSettings ? labsSettings.hostVersion : null);
+                }
+
+                // based on what happens here I think I want to split on which internal host I create
+                resolver.resolve();
+            };
+        }
+        OfficeJSLabHost.prototype.getSupportedVersions = function () {
+            return [this._version];
+        };
+
+        OfficeJSLabHost.prototype.connect = function (versions, callback) {
+            var _this = this;
+            this._officeInitialized.then(function () {
+                _this._labHost.connect(versions, callback);
+            });
+        };
+
+        OfficeJSLabHost.prototype.disconnect = function (callback) {
+            this._labHost.disconnect(callback);
+        };
+
+        OfficeJSLabHost.prototype.on = function (handler) {
+            this._labHost.on(handler);
+        };
+
+        OfficeJSLabHost.prototype.sendMessage = function (type, options, callback) {
+            this._labHost.sendMessage(type, options, callback);
+        };
+
+        OfficeJSLabHost.prototype.create = function (options, callback) {
+            this._labHost.create(options, callback);
+        };
+
+        OfficeJSLabHost.prototype.getConfiguration = function (callback) {
+            this._labHost.getConfiguration(callback);
+        };
+
+        OfficeJSLabHost.prototype.setConfiguration = function (configuration, callback) {
+            this._labHost.setConfiguration(configuration, callback);
+        };
+
+        OfficeJSLabHost.prototype.getConfigurationInstance = function (callback) {
+            this._labHost.getConfigurationInstance(callback);
+        };
+
+        OfficeJSLabHost.prototype.getState = function (callback) {
+            this._labHost.getState(callback);
+        };
+
+        OfficeJSLabHost.prototype.setState = function (state, callback) {
+            this._labHost.setState(state, callback);
+        };
+
+        OfficeJSLabHost.prototype.takeAction = function (type, options, result, callback) {
+            this._labHost.takeAction(type, options, result, callback);
+        };
+
+        OfficeJSLabHost.prototype.getActions = function (type, options, callback) {
+            this._labHost.getActions(type, options, callback);
+        };
+        OfficeJSLabHost.SettingsKeyName = "__labs__";
+        return OfficeJSLabHost;
+    })();
+    Labs.OfficeJSLabHost = OfficeJSLabHost;
+})(Labs || (Labs = {}));
+
+// Also set the default builder
+Labs.DefaultHostBuilder = function () {
+    return new Labs.OfficeJSLabHost();
+};
+var Labs;
+(function (Labs) {
+    var EventState;
+    (function (EventState) {
+        EventState[EventState["Reject"] = 0] = "Reject";
+        EventState[EventState["Collecting"] = 1] = "Collecting";
+        EventState[EventState["Firing"] = 2] = "Firing";
+    })(EventState || (EventState = {}));
+    ;
+
+    /**
+    * PostMessageLabHost - ILabHost that uses PostMessage for its communication mechanism
+    */
+    var PostMessageLabHost = (function () {
+        function PostMessageLabHost(labId, targetWindow, targetOrigin) {
+            var _this = this;
+            this._handlers = [];
+            this._version = { version: { major: 0, minor: 1 } };
+            this._state = EventState.Reject;
+            this._deferredEvents = [];
+            // Start the message processor and listen for messages
+            this._targetWindow = targetWindow;
+            this._messageProcessor = new Labs.MessageProcessor(labId, targetOrigin, function (origin, data, callback) {
+                if (origin == _this._targetWindow) {
+                    // Use setTimeout to make sure ordering is preserved with
+                    _this.handleEvent(data, callback);
+                }
+            });
+        }
+        PostMessageLabHost.prototype.handleEvent = function (command, callback) {
+            if (this._state == EventState.Reject) {
+                callback("Message received prior to connection", null);
+            } else if (this._state == EventState.Collecting) {
+                this._deferredEvents.push({
+                    command: command,
+                    callback: callback
+                });
+            } else {
+                this.invokeEvent(null, command, callback);
+            }
+        };
+
+        PostMessageLabHost.prototype.invokeDeferredEvents = function (err) {
+            var _this = this;
+            this._deferredEvents.forEach(function (event) {
+                _this.invokeEvent(err, event.command, event.callback);
+            });
+            this._deferredEvents = [];
+        };
+
+        PostMessageLabHost.prototype.invokeEvent = function (err, command, callback) {
+            if (!err) {
+                this._handlers.map(function (handler) {
+                    handler(command.type, command.commandData);
+                });
+            }
+
+            callback(err, null);
+        };
+
+        PostMessageLabHost.prototype.getSupportedVersions = function () {
+            return [this._version];
+        };
+
+        PostMessageLabHost.prototype.connect = function (versions, callback) {
+            var _this = this;
+            this._messageProcessor.start();
+            this._state = EventState.Collecting;
+
+            // send the initialize message
+            var initializeMessage = new Labs.Command(Labs.CommandType.Connect, this._version);
+            this._messageProcessor.sendMessage(this._targetWindow, initializeMessage, function (err, connectionResponse) {
+                if (connectionResponse.hostVersion.major !== _this._version.version.major) {
+                    err = "Unsupported post message host";
+                }
+
+                setTimeout(function () {
+                    // Fire deferred events after we make the callback. This will give the connection
+                    // response time to add any handlers prior to them firing.
+                    callback(err, connectionResponse);
+
+                    // And then invoke any deferred work
+                    _this.invokeDeferredEvents(err);
+                    _this._state = err ? EventState.Reject : EventState.Firing;
+                }, 0);
+            });
+        };
+
+        PostMessageLabHost.prototype.disconnect = function (callback) {
+            var _this = this;
+            this._state = EventState.Reject;
+            var doneCommand = new Labs.Command(Labs.CommandType.Disconnect, null);
+            this._messageProcessor.sendMessage(this._targetWindow, doneCommand, function (err, data) {
+                _this._messageProcessor.stop();
+                callback(err, data);
+            });
+        };
+
+        PostMessageLabHost.prototype.on = function (handler) {
+            this._handlers.push(handler);
+        };
+
+        PostMessageLabHost.prototype.sendMessage = function (type, options, callback) {
+            var commandData = {
+                type: type,
+                options: options
+            };
+
+            var sendMessageCommand = new Labs.Command(Labs.CommandType.SendMessage, commandData);
+            this.sendCommand(sendMessageCommand, callback);
+        };
+
+        PostMessageLabHost.prototype.create = function (options, callback) {
+            var createCommand = new Labs.Command(Labs.CommandType.Create, options);
+            this.sendCommand(createCommand, callback);
+        };
+
+        //
+        // Gets the current lab configuration from the host
+        //
+        PostMessageLabHost.prototype.getConfiguration = function (callback) {
+            var getConfigurationCommand = new Labs.Command(Labs.CommandType.GetConfiguration);
+            this.sendCommand(getConfigurationCommand, callback);
+        };
+
+        //
+        // Sets a new lab configuration on the host
+        //
+        PostMessageLabHost.prototype.setConfiguration = function (configuration, callback) {
+            var setConfigurationCommand = new Labs.Command(Labs.CommandType.SetConfiguration, configuration);
+            this.sendCommand(setConfigurationCommand, callback);
+        };
+
+        PostMessageLabHost.prototype.getConfigurationInstance = function (callback) {
+            var getConfigurationInstanceCommand = new Labs.Command(Labs.CommandType.GetConfigurationInstance);
+            this.sendCommand(getConfigurationInstanceCommand, callback);
+        };
+
+        //
+        // Gets the current state of the lab for the user
+        //
+        PostMessageLabHost.prototype.getState = function (callback) {
+            var getStateCommand = new Labs.Command(Labs.CommandType.GetState);
+            this.sendCommand(getStateCommand, callback);
+        };
+
+        //
+        // Sets the state of the lab for the user
+        //
+        PostMessageLabHost.prototype.setState = function (state, callback) {
+            var setStateCommand = new Labs.Command(Labs.CommandType.SetState, state);
+            this.sendCommand(setStateCommand, callback);
+        };
+
+        PostMessageLabHost.prototype.takeAction = function (type, options, result, callback) {
+            var commandData = {
+                type: type,
+                options: options,
+                result: callback !== undefined ? result : null
+            };
+
+            var takeActionCommand = new Labs.Command(Labs.CommandType.TakeAction, commandData);
+            this.sendCommand(takeActionCommand, callback !== undefined ? callback : result);
+        };
+
+        PostMessageLabHost.prototype.getActions = function (type, options, callback) {
+            var commandData = {
+                type: type,
+                options: options
+            };
+
+            var getCompletedActionsCommand = new Labs.Command(Labs.CommandType.GetCompletedActions, commandData);
+            this.sendCommand(getCompletedActionsCommand, callback);
+        };
+
+        PostMessageLabHost.prototype.sendCommand = function (command, callback) {
+            this._messageProcessor.sendMessage(this._targetWindow, command, callback);
+        };
+        return PostMessageLabHost;
+    })();
+    Labs.PostMessageLabHost = PostMessageLabHost;
+})(Labs || (Labs = {}));
+var Labs;
+(function (Labs) {
+    var RichClientOfficeJSLabsHost = (function () {
+        function RichClientOfficeJSLabsHost(configuration, createdHostVersion) {
+            var _this = this;
+            this._handlers = [];
+            this._version = { version: { major: 0, minor: 1 } };
+            this._labState = new Labs.InMemoryLabState();
+            this._labState.setConfiguration(configuration);
+            this._createdHostVersion = createdHostVersion;
+
+            // Get the current active view and pass it to the initialization method
+            var activeViewResolver = new Labs.Resolver();
+            Office.context.document.getActiveViewAsync(function (result) {
+                _this._activeMode = _this.getLabModeFromActiveView(result.value);
+                activeViewResolver.resolve(result.value);
+            });
+            this._activeViewP = activeViewResolver.promise;
+
+            // And also listen for updates
+            Office.context.document.addHandlerAsync("activeViewChanged", function (args) {
+                _this._activeMode = _this.getLabModeFromActiveView(args.activeView);
+
+                _this._handlers.forEach(function (handler) {
+                    handler(Labs.CommandType.ModeChanged, { mode: Labs.Core.LabMode[_this._activeMode] });
+                });
+            });
+        }
+        RichClientOfficeJSLabsHost.prototype.getLabModeFromActiveView = function (view) {
+            return view === 'edit' ? Labs.Core.LabMode.Edit : Labs.Core.LabMode.View;
+        };
+
+        RichClientOfficeJSLabsHost.prototype.getSupportedVersions = function () {
+            return [this._version];
+        };
+
+        RichClientOfficeJSLabsHost.prototype.connect = function (versions, callback) {
+            var _this = this;
+            // verify versions are supported
+            this._activeViewP.then(function () {
+                var connectionResponse = {
+                    initializationInfo: {
+                        hostVersion: _this._createdHostVersion
+                    },
+                    hostVersion: {
+                        major: 0,
+                        minor: 1
+                    },
+                    userInfo: {
+                        id: "TestUserId",
+                        permissions: [
+                            Labs.Core.Permissions.Edit,
+                            Labs.Core.Permissions.Take
+                        ]
+                    },
+                    applicationId: "TestAppId",
+                    mode: _this._activeMode
+                };
+
+                setTimeout(function () {
+                    return callback(null, connectionResponse);
+                }, 0);
+            });
+        };
+
+        RichClientOfficeJSLabsHost.prototype.disconnect = function (callback) {
+            setTimeout(function () {
+                return callback(null, null);
+            }, 0);
+        };
+
+        RichClientOfficeJSLabsHost.prototype.on = function (handler) {
+            this._handlers.push(handler);
+        };
+
+        RichClientOfficeJSLabsHost.prototype.sendMessage = function (type, options, callback) {
+            if (type === Labs.TimelineNextMessageType) {
+                var nextSlide = Office.Index.Next;
+                Office.context.document.goToByIdAsync(nextSlide, Office.GoToType.Index, function (asyncResult) {
+                    var error = null;
+                    if (asyncResult.status == Office.AsyncResultStatus.Failed) {
+                        error = asyncResult.error;
+                    }
+
+                    setTimeout(function () {
+                        return callback(error, null);
+                    }, 0);
+                });
+            } else {
+                setTimeout(function () {
+                    return callback("unknown message", null);
+                }, 0);
+            }
+        };
+
+        RichClientOfficeJSLabsHost.prototype.create = function (options, callback) {
+            // Store the options in the config settings. replace anything that is already there
+            this._createdHostVersion = this._version.version;
+            this.updateStoredLabsState(callback);
+        };
+
+        RichClientOfficeJSLabsHost.prototype.getConfiguration = function (callback) {
+            var _this = this;
+            setTimeout(function () {
+                return callback(null, _this._labState.getConfiguration());
+            }, 0);
+        };
+
+        RichClientOfficeJSLabsHost.prototype.setConfiguration = function (configuration, callback) {
+            this._labState.setConfiguration(configuration);
+            this.updateStoredLabsState(callback);
+        };
+
+        RichClientOfficeJSLabsHost.prototype.updateStoredLabsState = function (callback) {
+            var settings = {
+                configuration: this._labState.getConfiguration(),
+                hostVersion: this._createdHostVersion
+            };
+
+            Office.context.document.settings.set(Labs.OfficeJSLabHost.SettingsKeyName, settings);
+            Office.context.document.settings.saveAsync(function (asyncResult) {
+                setTimeout(function () {
+                    return callback(asyncResult.status === Office.AsyncResultStatus.Failed ? asyncResult.status : null, null);
+                }, 0);
+            });
+        };
+
+        RichClientOfficeJSLabsHost.prototype.getConfigurationInstance = function (callback) {
+            var _this = this;
+            setTimeout(function () {
+                return callback(null, _this._labState.getConfigurationInstance());
+            });
+        };
+
+        RichClientOfficeJSLabsHost.prototype.getState = function (callback) {
+            var _this = this;
+            setTimeout(function () {
+                return callback(null, _this._labState.getState());
+            });
+        };
+
+        RichClientOfficeJSLabsHost.prototype.setState = function (state, callback) {
+            this._labState.setState(state);
+            setTimeout(function () {
+                return callback(null, null);
+            });
+        };
+
+        RichClientOfficeJSLabsHost.prototype.takeAction = function (type, options, result, callback) {
+            var translatedCallback = callback !== undefined ? callback : result;
+            var translatedResult = callback !== undefined ? result : null;
+
+            var action = this._labState.takeAction(type, options, translatedResult);
+            setTimeout(function () {
+                return translatedCallback(null, action);
+            });
+        };
+
+        RichClientOfficeJSLabsHost.prototype.getActions = function (type, options, callback) {
+            var _this = this;
+            setTimeout(function () {
+                return callback(null, _this._labState.getActions(type, options));
+            });
+        };
+        return RichClientOfficeJSLabsHost;
+    })();
+    Labs.RichClientOfficeJSLabsHost = RichClientOfficeJSLabsHost;
+})(Labs || (Labs = {}));
+//# sourceMappingURL=LabsHosts.js.map
+
+var LabsServer;
+(function (LabsServer) {
+    var LabHost = (function () {
+        function LabHost(appId, processor) {
+            this._active = false;
+            this._connected = false;
+            this._targetWindow = null;
+            this._isStarted = false;
+            this._appId = appId;
+            this._processor = processor;
+        }
+        LabHost.prototype.handleEvent = function (origin, data, callback) {
+            var _this = this;
+            var command = data;
+            var handledP = null;
+
+            if (command.type === Labs.CommandType.Connect) {
+                handledP = this._processor.handleConnect(command.commandData);
+            } else if (!this._connected || (this._targetWindow !== origin)) {
+                var deferred = $.Deferred();
+                deferred.reject({ message: "Connection has not been established" });
+                handledP = deferred.promise();
+            } else {
+                switch (command.type) {
+                    case Labs.CommandType.Disconnect:
+                        handledP = this._processor.handleDisconnect(command.commandData);
+                        break;
+
+                    case Labs.CommandType.Create:
+                        handledP = this._processor.handleCreate(command.commandData);
+                        break;
+
+                    case Labs.CommandType.GetConfigurationInstance:
+                        handledP = this._processor.handleGetConfigurationInstance();
+                        break;
+
+                    case Labs.CommandType.TakeAction:
+                        handledP = this._processor.handleTakeAction(command.commandData);
+                        break;
+
+                    case Labs.CommandType.GetCompletedActions:
+                        handledP = this._processor.handleGetActions(command.commandData);
+                        break;
+
+                    case Labs.CommandType.GetState:
+                        handledP = this._processor.handleGetState();
+                        break;
+
+                    case Labs.CommandType.SetState:
+                        handledP = this._processor.handleSetState(command.commandData);
+                        break;
+
+                    case Labs.CommandType.GetConfiguration:
+                        handledP = this._processor.handleGetConfiguration();
+                        break;
+
+                    case Labs.CommandType.SetConfiguration:
+                        handledP = this._processor.handleSetConfiguration(command.commandData);
+                        break;
+
+                    case Labs.CommandType.SendMessage:
+                        handledP = this._processor.handleSendMessage(command.commandData);
+                        break;
+
+                    default:
+                        var deferred = $.Deferred();
+                        deferred.reject({ message: "Unknown Command" });
+                        handledP = deferred.promise();
+                        break;
+                }
+            }
+
+            handledP.then(function (result) {
+                callback(null, result);
+
+                switch (command.type) {
+                    case Labs.CommandType.Connect:
+                        _this._targetWindow = origin;
+                        _this._connected = true;
+                        _this.sendActivateMessage(_this._active);
+                        break;
+
+                    case Labs.CommandType.Disconnect:
+                        _this._targetWindow = null;
+                        _this._connected = false;
+                        break;
+                }
+            }, function (err) {
+                callback(err, null);
+            });
+        };
+
+        LabHost.prototype.sendMessage = function (data) {
+            if (!this._targetWindow) {
+                throw "No target connected";
+            }
+
+            var deferred = $.Deferred();
+            this._messageProcessor.sendMessage(this._targetWindow, data, function (err, sendMessageData) {
+                if (err) {
+                    deferred.fail(err);
+                } else {
+                    deferred.resolve(sendMessageData);
+                }
+            });
+
+            return deferred.promise();
+        };
+
+        LabHost.prototype.start = function () {
+            var _this = this;
+            if (this._isStarted) {
+                throw "LabHost already started";
+            }
+            this._isStarted = true;
+
+            this._messageProcessor = new Labs.MessageProcessor(this._appId, "*", function (origin, data, callback) {
+                _this.handleEvent(origin, data, callback);
+            });
+            this._messageProcessor.start();
+        };
+
+        LabHost.prototype.stop = function () {
+            if (!this._isStarted) {
+                throw "LabHost is not running";
+            }
+            this._isStarted = false;
+
+            this._messageProcessor.stop();
+        };
+
+        LabHost.prototype.setActive = function (active) {
+            this._active = active;
+            if (this._connected) {
+                this.sendActivateMessage(active);
+            }
+        };
+
+        LabHost.prototype.sendActivateMessage = function (active) {
+            this.sendMessage(new Labs.Command(active ? Labs.Core.EventTypes.Activate : Labs.Core.EventTypes.Deactivate, null));
+        };
+        return LabHost;
+    })();
+    LabsServer.LabHost = LabHost;
+})(LabsServer || (LabsServer = {}));
+//# sourceMappingURL=LabsServer.js.map
diff --git a/v3/office-mix-labshost/README b/v3/office-mix-labshost/README
new file mode 100644
index 000000000..79b02b621
--- /dev/null
+++ b/v3/office-mix-labshost/README
@@ -0,0 +1,10 @@
+Taken from: https://labsjs.blob.core.windows.net/sdk/LabsJS-1.0.4/labs.html
+
+To test locally, run:
+
+cd v3/
+python bottle_server.py
+
+and visit
+
+http://localhost:8080/office-mix-labshost/labshost.html?lab=http://localhost:8080/opt-office-mix.html?PostMessageLabHost
diff --git a/v3/office-mix-labshost/labshost.html b/v3/office-mix-labshost/labshost.html
new file mode 100644
index 000000000..e18460056
--- /dev/null
+++ b/v3/office-mix-labshost/labshost.html
@@ -0,0 +1,94 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <title>Labs.js Host</title>
+        <link href="//ajax.aspnetcdn.com/ajax/bootstrap/2.3.2/css/bootstrap.css" rel="stylesheet" />
+        <link href="//ajax.aspnetcdn.com/ajax/bootstrap/2.3.2/css/bootstrap-responsive.css" rel="stylesheet" />
+        <style type="text/css">
+            div#iframe-wrapper {
+                max-width: 1280px;
+                min-width: 120px;
+                width: 960px;
+                max-height: 800px;
+                min-height: 200px;
+                height: 540px;
+                resize: both;
+                overflow: auto;
+                border: 1px solid;
+            }
+        </style>
+    </head>
+    <body>
+        <div class="container-fluid">
+            <section id="controls" class="pull-right">
+                <!-- Edit/View Mode Setting -->
+                <h3>Mode</h3>
+                <div class="btn-group">
+                    <button type="button" class="btn" data-bind="click: setEditMode, css: { active: mode() === 'Edit' }">Edit</button>
+                    <button type="button" class="btn" data-bind="click: setViewMode, css: { active: mode() === 'View' }">View</button>
+                </div>
+                                
+                <h3>Host Version</h3>
+                <input data-bind="value: createHostVersion" />
+
+                <!-- Lab initial configuration -->
+                <h3>Configuration</h3>                
+                <textarea data-bind="value: configuration, valueUpdate: 'keyup'" rows="10" class="input-xlarge"></textarea>
+                <br/>
+                <textarea data-bind="text: configurationInstance" readonly rows="10" class="input-xlarge"></textarea>
+
+                <!-- Lab actions -->
+                <h3>Actions</h3>
+                <textarea data-bind="value: actions, valueUpdate: 'keyup'" rows="20" class="input-xlarge"></textarea>
+ 
+                <!-- Key/Value store for lab -->
+                <h3>Lab State</h3>
+                <textarea data-bind="value: state, valueUpdate: 'keyup'" rows="10" class="input-xlarge"></textarea>
+                
+                <h3>State</h3>
+                <div class="btn-group">
+                    <button type="button" class="btn" data-bind="click: setActive, css: { active: active() }">Active</button>
+                    <button type="button" class="btn" data-bind="click: setDeactive, css: { active: !active() }">Deactive</button>
+                </div>
+            </section>
+
+            <section id="lab">
+                <h1>Lab</h1>
+                <form data-bind="submit: loadLab">
+                    <input data-bind="value: labUriEntry" />
+                    <button type="submit">Load</button>
+                </form>
+                <!-- Same sandbox as specified by office -->
+                <div id="iframe-wrapper">
+                    <iframe name="labFrame" data-bind="attr: { src: labUri }" width="100%" height="98%" frameborder="0" sandbox="allow-scripts allow-forms allow-same-origin ms-allow-popups allow-popups"></iframe>
+                </div>                
+            </section>
+
+            
+            <section id="console">
+                <h1>Console</h1>
+                <ul data-bind="foreach: consoleEntries">
+                    <li data-bind="text: $data"></li>
+                </ul>
+            </section>
+        </div>
+
+        <script src="//ajax.aspnetcdn.com/ajax/jQuery/jquery-2.0.3.js" type="text/javascript"></script>
+        <script src="//ajax.aspnetcdn.com/ajax/bootstrap/2.3.2/bootstrap.js" type="text/javascript"></script>
+        <script src="//ajax.aspnetcdn.com/ajax/knockout/knockout-2.2.1.js" type="text/javascript"></script>
+        <script src="underscore.js" type="text/javascript"></script>
+        <script src="LabsJsServer-1.0.4.js" type="text/javascript"></script>
+        <script src="labshost.js" type="text/javascript"></script>
+        <script type="text/javascript">
+            // see if the url to navigate to is set in the query string
+            var labRegExp = /lab=(.*)/ig;
+            var url = labRegExp.exec(window.location.search);            
+            
+            var viewModel = new LabsHostViewModel("Edit", url != null ? url[1] : "");
+            ko.applyBindings(viewModel);
+        </script>
+    </body>    
+</html>
diff --git a/v3/office-mix-labshost/labshost.js b/v3/office-mix-labshost/labshost.js
new file mode 100644
index 000000000..cb225f701
--- /dev/null
+++ b/v3/office-mix-labshost/labshost.js
@@ -0,0 +1,169 @@
+var LabsHostViewModel = (function () {
+    function LabsHostViewModel(mode, initialLab) {
+        var _this = this;
+        this._version = { major: 0, minor: 1 };
+        this._labState = new Labs.InMemoryLabState();
+        this.attemptMap = {};
+        this._nextId = 0;
+        this.active = ko.observable(false);
+        this.mode = ko.observable(mode);
+        this.consoleEntries = ko.observableArray();
+        this.createHostVersion = ko.observable();
+
+        this.labUriEntry = ko.observable(initialLab);
+        this.labUri = initialLab ? ko.observable(initialLab) : ko.observable();
+        this.actions = ko.observable(JSON.stringify([]));
+        this.results = ko.computed(function () {
+            var actions = _this.actions();
+            return JSON.parse(actions);
+        });
+
+        this.configuration = ko.observable(null);
+        this.configurationInstance = ko.observable(null);
+        this.state = ko.observable(null);
+
+        this.actions.subscribe(function (newActions) {
+            _this._labState.setActions(JSON.parse(newActions));
+        });
+
+        this.state.subscribe(function (newState) {
+            _this._labState.setState(JSON.parse(newState));
+        });
+
+        this.configuration.subscribe(function (newConfiguration) {
+            _this._labState.setConfiguration(JSON.parse(newConfiguration));
+            _this.configurationInstance(JSON.stringify(_this._labState.getConfigurationInstance()));
+        });
+
+        this._server = new LabsServer.LabHost("test", this);
+        this._server.start();
+    }
+    LabsHostViewModel.prototype.loadLab = function () {
+        this.log("Loading: " + this.labUriEntry());
+        this.labUri(this.labUriEntry());
+    };
+
+    LabsHostViewModel.prototype.setEditMode = function () {
+        var _this = this;
+        var editModeString = Labs.Core.LabMode[Labs.Core.LabMode.Edit];
+
+        if (this.mode() !== editModeString) {
+            this.mode(Labs.Core.LabMode[Labs.Core.LabMode.Edit]);
+            this.log("Setting Edit Mode");
+            var promise = this._server.sendMessage(new Labs.Command(Labs.CommandType.ModeChanged, { mode: editModeString }));
+            promise.done(function () {
+                _this.log("Mode Set");
+            });
+        }
+    };
+
+    LabsHostViewModel.prototype.setActive = function () {
+        if (!this.active()) {
+            this.active(true);
+            this._server.setActive(true);
+        }
+    };
+
+    LabsHostViewModel.prototype.setDeactive = function () {
+        if (this.active()) {
+            this.active(false);
+            this._server.setActive(false);
+        }
+    };
+
+    LabsHostViewModel.prototype.setViewMode = function () {
+        var _this = this;
+        var viewModeString = Labs.Core.LabMode[Labs.Core.LabMode.View];
+
+        if (this.mode() !== viewModeString) {
+            this.mode(viewModeString);
+            this.log("Setting View Mode");
+            var promise = this._server.sendMessage(new Labs.Command(Labs.CommandType.ModeChanged, { mode: viewModeString }));
+            promise.done(function () {
+                _this.log("Mode Set");
+            });
+        }
+    };
+
+    LabsHostViewModel.prototype.log = function (entry) {
+        this.consoleEntries.push(entry);
+    };
+
+    LabsHostViewModel.prototype.handleConnect = function (versionInfo) {
+        var hostVersion = this.createHostVersion() ? JSON.parse(this.createHostVersion()) : null;
+
+        var connectionResponse = {
+            initializationInfo: {
+                hostVersion: hostVersion
+            },
+            hostVersion: this._version,
+            userInfo: {
+                id: "TestUserId",
+                permissions: [
+                    Labs.Core.Permissions.Edit,
+                    Labs.Core.Permissions.Take
+                ]
+            },
+            applicationId: "TestAppId",
+            mode: Labs.Core.LabMode[this.mode()]
+        };
+
+        return $.when(connectionResponse);
+    };
+
+    LabsHostViewModel.prototype.handleDisconnect = function (completionStatus) {
+        return $.when();
+    };
+
+    LabsHostViewModel.prototype.handleGetConfiguration = function () {
+        return $.when(this._labState.getConfiguration());
+    };
+
+    LabsHostViewModel.prototype.handleSetConfiguration = function (configuration) {
+        this._labState.setConfiguration(configuration);
+        this.configuration(JSON.stringify(configuration));
+
+        this.state(this._labState.getState());
+        this.actions(JSON.stringify(this._labState.getAllActions()));
+        this.configurationInstance(JSON.stringify(this._labState.getConfigurationInstance()));
+
+        return $.when();
+    };
+
+    LabsHostViewModel.prototype.handleGetState = function () {
+        return $.when(this._labState.getState());
+    };
+
+    LabsHostViewModel.prototype.handleSetState = function (state) {
+        this._labState.setState(state);
+        this.state(JSON.stringify(state));
+        return $.when();
+    };
+
+    LabsHostViewModel.prototype.handleCreate = function (options) {
+        this.createHostVersion(JSON.stringify(this._version));
+        return $.when();
+    };
+
+    LabsHostViewModel.prototype.handleGetConfigurationInstance = function () {
+        return $.when(this._labState.getConfigurationInstance());
+    };
+
+    LabsHostViewModel.prototype.handleTakeAction = function (commandData) {
+        var completedAction = this._labState.takeAction(commandData.type, commandData.options, commandData.result);
+        this.actions(JSON.stringify(this._labState.getAllActions()));
+        return $.when(completedAction);
+    };
+
+    LabsHostViewModel.prototype.handleGetActions = function (commandData) {
+        var completedActions = this._labState.getActions(commandData.type, commandData.options);
+        return $.when(completedActions);
+    };
+
+    LabsHostViewModel.prototype.handleSendMessage = function (messageData) {
+        this.log(JSON.stringify(messageData));
+        return $.when();
+    };
+    return LabsHostViewModel;
+})();
+//# sourceMappingURL=labshost.js.map
diff --git a/v3/office-mix-labshost/labshost.js.map b/v3/office-mix-labshost/labshost.js.map
new file mode 100644
index 000000000..e9325d2f3
--- /dev/null
+++ b/v3/office-mix-labshost/labshost.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"labshost.js","sourceRoot":"","sources":["labshost.ts"],"names":["LabsHostViewModel","LabsHostViewModel.constructor","","","","","LabsHostViewModel.loadLab","LabsHostViewModel.setEditMode","","LabsHostViewModel.setActive","LabsHostViewModel.setDeactive","LabsHostViewModel.setViewMode","","LabsHostViewModel.log","LabsHostViewModel.handleConnect","LabsHostViewModel.handleDisconnect","LabsHostViewModel.handleGetConfiguration","LabsHostViewModel.handleSetConfiguration","LabsHostViewModel.handleGetState","LabsHostViewModel.handleSetState","LabsHostViewModel.handleCreate","LabsHostViewModel.handleGetConfigurationInstance","LabsHostViewModel.handleTakeAction","LabsHostViewModel.handleGetActions","LabsHostViewModel.handleSendMessage"],"mappings":"AAIA;IAmBIA,2BAAYA,IAAYA,EAAEA,UAAkBA;QAA5CC,iBAiCCA;QAxCDA,KAAQA,QAAQA,GAAGA,EAAEA,KAAKA,EAAEA,CAACA,EAAEA,KAAKA,EAAEA,CAACA,EAAEA,CAACA;QAC1CA,KAAQA,SAASA,GAA0BA,IAAIA,IAAIA,CAACA,gBAAgBA,CAACA,CAACA,CAACA;QAEvEA,KAAQA,UAAUA,GAAQA,EAAEA,CAACA;QAE7BA,KAAQA,OAAOA,GAAGA,CAACA,CAACA;QAGhBA,IAAIA,CAACA,MAAMA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,KAAKA,CAACA,CAACA;QACnCA,IAAIA,CAACA,IAAIA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,IAAIA,CAACA,CAACA;QAChCA,IAAIA,CAACA,cAAcA,GAAGA,EAAEA,CAACA,eAAeA,CAACA,CAACA,CAACA;QAC3CA,IAAIA,CAACA,iBAAiBA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,CAACA,CAACA;;QAEzCA,IAAIA,CAACA,WAAWA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,UAAUA,CAACA,CAACA;QAC7CA,IAAIA,CAACA,MAAMA,GAAGA,UAAUA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,UAAUA,CAACA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,CAACA,CAACA;QACvEA,IAAIA,CAACA,OAAOA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,IAAIA,CAACA,SAASA,CAACA,EAAEA,CAACA,CAACA,CAACA;QACjDA,IAAIA,CAACA,OAAOA,GAAGA,EAAEA,CAACA,QAAQA,CAACA;YACvBC,IAAIA,OAAOA,GAAGA,KAAIA,CAACA,OAAOA,CAACA,CAACA,CAACA;YAC7BA,OAAOA,IAAIA,CAACA,KAAKA,CAACA,OAAOA,CAACA,CAACA;QAC/BA,CAACA,CAACD,CAACA;;QAEHA,IAAIA,CAACA,aAAaA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,IAAIA,CAACA,CAACA;QACzCA,IAAIA,CAACA,qBAAqBA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,IAAIA,CAACA,CAACA;QACjDA,IAAIA,CAACA,KAAKA,GAAGA,EAAEA,CAACA,UAAUA,CAACA,IAAIA,CAACA,CAACA;;QAEjCA,IAAIA,CAACA,OAAOA,CAACA,SAASA,CAACA,UAACA,UAAUA;YAC9BE,KAAIA,CAACA,SAASA,CAACA,UAAUA,CAACA,IAAIA,CAACA,KAAKA,CAACA,UAAUA,CAACA,CAACA,CAACA;QACtDA,CAACA,CAACF,CAACA;;QAEHA,IAAIA,CAACA,KAAKA,CAACA,SAASA,CAACA,UAACA,QAAQA;YAC1BG,KAAIA,CAACA,SAASA,CAACA,QAAQA,CAACA,IAAIA,CAACA,KAAKA,CAACA,QAAQA,CAACA,CAACA,CAACA;QAClDA,CAACA,CAACH,CAACA;;QAEHA,IAAIA,CAACA,aAAaA,CAACA,SAASA,CAACA,UAACA,gBAAgBA;YAC1CI,KAAIA,CAACA,SAASA,CAACA,gBAAgBA,CAACA,IAA+BA,CAACA,KAAKA,CAACA,gBAAgBA,CAACA,CAACA,CAACA;YACzFA,KAAIA,CAACA,qBAAqBA,CAACA,IAAIA,CAACA,SAASA,CAACA,KAAIA,CAACA,SAASA,CAACA,wBAAwBA,CAACA,CAACA,CAACA,CAACA,CAACA;QAC1FA,CAACA,CAACJ,CAACA;;QAEHA,IAAIA,CAACA,OAAOA,GAAGA,IAAIA,UAAUA,CAACA,OAAOA,CAACA,MAAMA,EAAEA,IAAIA,CAACA,CAACA;QACpDA,IAAIA,CAACA,OAAOA,CAACA,KAAKA,CAACA,CAACA,CAACA;IACzBA,CAACA;IAEDD,sCAAAA;QACIM,IAAIA,CAACA,GAAGA,CAACA,WAAWA,GAAGA,IAAIA,CAACA,WAAWA,CAACA,CAACA,CAACA,CAACA;QAC3CA,IAAIA,CAACA,MAAMA,CAACA,IAAIA,CAACA,WAAWA,CAACA,CAACA,CAACA,CAACA;IACpCA,CAACA;;IAEDN,0CAAAA;QAAAO,iBAWCA;QAVGA,IAAIA,cAAcA,GAAGA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,CAACA;;QAE/DA,IAAIA,IAAIA,CAACA,IAAIA,CAACA,CAACA,KAAKA,cAAcA,CAAEA;YAChCA,IAAIA,CAACA,IAAIA,CAACA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,CAACA,CAACA;YACrDA,IAAIA,CAACA,GAAGA,CAACA,mBAAmBA,CAACA,CAACA;YAC9BA,IAAIA,OAAOA,GAAGA,IAAIA,CAACA,OAAOA,CAACA,WAAWA,CAACA,IAAIA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,WAAWA,CAACA,WAAWA,EAAEA,EAAEA,IAAIA,EAAEA,cAAcA,EAAEA,CAACA,CAACA,CAACA;YACjHA,OAAOA,CAACA,IAAIA,CAACA;gBACTC,KAAIA,CAACA,GAAGA,CAACA,UAAUA,CAACA,CAACA;YACzBA,CAACA,CAACD,CAACA;SACNA;IACLA,CAACA;;IAEDP,wCAAAA;QACIS,IAAIA,CAACA,IAAIA,CAACA,MAAMA,CAACA,CAACA,CAAEA;YAChBA,IAAIA,CAACA,MAAMA,CAACA,IAAIA,CAACA,CAACA;YAClBA,IAAIA,CAACA,OAAOA,CAACA,SAASA,CAACA,IAAIA,CAACA,CAACA;SAChCA;IACLA,CAACA;;IAEDT,0CAAAA;QACIU,IAAIA,IAAIA,CAACA,MAAMA,CAACA,CAACA,CAAEA;YACfA,IAAIA,CAACA,MAAMA,CAACA,KAAKA,CAACA,CAACA;YACnBA,IAAIA,CAACA,OAAOA,CAACA,SAASA,CAACA,KAAKA,CAACA,CAACA;SACjCA;IACLA,CAACA;;IAEDV,0CAAAA;QAAAW,iBAWCA;QAVGA,IAAIA,cAAcA,GAAGA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,CAACA;;QAE/DA,IAAIA,IAAIA,CAACA,IAAIA,CAACA,CAACA,KAAKA,cAAcA,CAAEA;YAChCA,IAAIA,CAACA,IAAIA,CAACA,cAAcA,CAACA,CAACA;YAC1BA,IAAIA,CAACA,GAAGA,CAACA,mBAAmBA,CAACA,CAACA;YAC9BA,IAAIA,OAAOA,GAAGA,IAAIA,CAACA,OAAOA,CAACA,WAAWA,CAACA,IAAIA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,WAAWA,CAACA,WAAWA,EAAEA,EAAEA,IAAIA,EAAEA,cAAcA,EAAEA,CAACA,CAACA,CAACA;YACjHA,OAAOA,CAACA,IAAIA,CAACA;gBACTC,KAAIA,CAACA,GAAGA,CAACA,UAAUA,CAACA,CAACA;YACzBA,CAACA,CAACD,CAACA;SACNA;IACLA,CAACA;;IAEDX,kCAAAA,UAAIA,KAAaA;QACba,IAAIA,CAACA,cAAcA,CAACA,IAAIA,CAACA,KAAKA,CAACA,CAACA;IACpCA,CAACA;;IAEDb,4CAAAA,UAAcA,WAA0CA;QACpDc,IAAIA,WAAWA,GAAGA,IAAIA,CAACA,iBAAiBA,CAACA,CAACA,GAAGA,IAAIA,CAACA,KAAKA,CAACA,IAAIA,CAACA,iBAAiBA,CAACA,CAACA,CAACA,GAAGA,IAAIA,CAACA;;QAGzFA,IAAIA,kBAAkBA,GAAkCA;YACpDA,kBAAkBA,EAAEA;gBAChBA,WAAWA,EAAEA,WAAWA;aAC3BA;YACDA,WAAWA,EAAEA,IAAIA,CAACA,QAAQA;YAC1BA,QAAQA,EAAEA;gBACNA,EAAEA,EAAEA,YAAYA;gBAChBA,WAAWA,EAAEA;oBACTA,IAAIA,CAACA,IAAIA,CAACA,WAAWA,CAACA,IAAIA;oBAC1BA,IAAIA,CAACA,IAAIA,CAACA,WAAWA,CAACA,IAAIA;iBAACA;aAClCA;YACDA,aAAaA,EAAEA,WAAWA;YAC1BA,IAAIA,EAAEA,IAAIA,CAACA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,IAAIA,CAACA,CAACA,CAACA;SACvCA,CAACA;;QAEFA,OAAOA,CAACA,CAACA,IAAIA,CAACA,kBAAkBA,CAACA,CAACA;IACtCA,CAACA;;IAEDd,+CAAAA,UAAiBA,gBAA6CA;QAC1De,OAAOA,CAACA,CAACA,IAAIA,CAACA,CAACA,CAACA;IACpBA,CAACA;;IAEDf,qDAAAA;QACIgB,OAAOA,CAACA,CAACA,IAAIA,CAACA,IAAIA,CAACA,SAASA,CAACA,gBAAgBA,CAACA,CAACA,CAACA,CAACA;IACrDA,CAACA;;IAEDhB,qDAAAA,UAAuBA,aAAuCA;QAC1DiB,IAAIA,CAACA,SAASA,CAACA,gBAAgBA,CAACA,aAAaA,CAACA,CAACA;QAC/CA,IAAIA,CAACA,aAAaA,CAACA,IAAIA,CAACA,SAASA,CAACA,aAAaA,CAACA,CAACA,CAACA;;QAGlDA,IAAIA,CAACA,KAAKA,CAACA,IAAIA,CAACA,SAASA,CAACA,QAAQA,CAACA,CAACA,CAACA,CAACA;QACtCA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,SAASA,CAACA,IAAIA,CAACA,SAASA,CAACA,aAAaA,CAACA,CAACA,CAACA,CAACA,CAACA;QAC7DA,IAAIA,CAACA,qBAAqBA,CAACA,IAAIA,CAACA,SAASA,CAACA,IAAIA,CAACA,SAASA,CAACA,wBAAwBA,CAACA,CAACA,CAACA,CAACA,CAACA;;QAEtFA,OAAOA,CAACA,CAACA,IAAIA,CAACA,CAACA,CAACA;IACpBA,CAACA;;IAEDjB,6CAAAA;QACIkB,OAAOA,CAACA,CAACA,IAAIA,CAACA,IAAIA,CAACA,SAASA,CAACA,QAAQA,CAACA,CAACA,CAACA,CAACA;IAC7CA,CAACA;;IAEDlB,6CAAAA,UAAeA,KAAUA;QACrBmB,IAAIA,CAACA,SAASA,CAACA,QAAQA,CAACA,KAAKA,CAACA,CAACA;QAC/BA,IAAIA,CAACA,KAAKA,CAACA,IAAIA,CAACA,SAASA,CAACA,KAAKA,CAACA,CAACA,CAACA;QAClCA,OAAOA,CAACA,CAACA,IAAIA,CAACA,CAACA,CAACA;IACpBA,CAACA;;IAEDnB,2CAAAA,UAAaA,OAAsCA;QAC/CoB,IAAIA,CAACA,iBAAiBA,CAACA,IAAIA,CAACA,SAASA,CAACA,IAAIA,CAACA,QAAQA,CAACA,CAACA,CAACA;QACtDA,OAAOA,CAACA,CAACA,IAAIA,CAACA,CAACA,CAACA;IACpBA,CAACA;;IAEDpB,6DAAAA;QACIqB,OAAOA,CAACA,CAACA,IAAIA,CAACA,IAAIA,CAACA,SAASA,CAACA,wBAAwBA,CAACA,CAACA,CAACA,CAACA;IAC7DA,CAACA;;IAEDrB,+CAAAA,UAAiBA,WAAuCA;QACpDsB,IAAIA,eAAeA,GAAGA,IAAIA,CAACA,SAASA,CAACA,UAAUA,CAACA,WAAWA,CAACA,IAAIA,EAAEA,WAAWA,CAACA,OAAOA,EAAEA,WAAWA,CAACA,MAAMA,CAACA,CAACA;QAC3GA,IAAIA,CAACA,OAAOA,CAACA,IAAIA,CAACA,SAASA,CAACA,IAAIA,CAACA,SAASA,CAACA,aAAaA,CAACA,CAACA,CAACA,CAACA,CAACA;QAC7DA,OAAOA,CAACA,CAACA,IAAIA,CAACA,eAAeA,CAACA,CAACA;IACnCA,CAACA;;IAEDtB,+CAAAA,UAAiBA,WAAuCA;QACpDuB,IAAIA,gBAAgBA,GAAGA,IAAIA,CAACA,SAASA,CAACA,UAAUA,CAACA,WAAWA,CAACA,IAAIA,EAAEA,WAAWA,CAACA,OAAOA,CAACA,CAACA;QACxFA,OAAOA,CAACA,CAACA,IAAIA,CAACA,gBAAgBA,CAACA,CAACA;IACpCA,CAACA;;IAEDvB,gDAAAA,UAAkBA,WAAwCA;QACtDwB,IAAIA,CAACA,GAAGA,CAACA,IAAIA,CAACA,SAASA,CAACA,WAAWA,CAACA,CAACA,CAACA;QACtCA,OAAOA,CAACA,CAACA,IAAIA,CAACA,CAACA,CAACA;IACpBA,CAACA;IACLxB;AAACA,CAAAA,IAAA"}
\ No newline at end of file
diff --git a/v3/office-mix-labshost/underscore.js b/v3/office-mix-labshost/underscore.js
new file mode 100644
index 000000000..ca61fdc3a
--- /dev/null
+++ b/v3/office-mix-labshost/underscore.js
@@ -0,0 +1,1344 @@
+//     Underscore.js 1.6.0
+//     http://underscorejs.org
+//     (c) 2009-2014 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+//     Underscore may be freely distributed under the MIT license.
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `exports` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var
+    push             = ArrayProto.push,
+    slice            = ArrayProto.slice,
+    concat           = ArrayProto.concat,
+    toString         = ObjProto.toString,
+    hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) {
+    if (obj instanceof _) return obj;
+    if (!(this instanceof _)) return new _(obj);
+    this._wrapped = obj;
+  };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root._ = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.6.0';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return obj;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, length = obj.length; i < length; i++) {
+        if (iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      var keys = _.keys(obj);
+      for (var i = 0, length = keys.length; i < length; i++) {
+        if (iterator.call(context, obj[keys[i]], keys[i], obj) === breaker) return;
+      }
+    }
+    return obj;
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = _.collect = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results.push(iterator.call(context, value, index, list));
+    });
+    return results;
+  };
+
+  var reduceError = 'Reduce of empty array with no initial value';
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var length = obj.length;
+    if (length !== +length) {
+      var keys = _.keys(obj);
+      length = keys.length;
+    }
+    each(obj, function(value, index, list) {
+      index = keys ? keys[--length] : --length;
+      if (!initial) {
+        memo = obj[index];
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, obj[index], index, list);
+      }
+    });
+    if (!initial) throw new TypeError(reduceError);
+    return memo;
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, predicate, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (predicate.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, predicate, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(predicate, context);
+    each(obj, function(value, index, list) {
+      if (predicate.call(context, value, index, list)) results.push(value);
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, predicate, context) {
+    return _.filter(obj, function(value, index, list) {
+      return !predicate.call(context, value, index, list);
+    }, context);
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, predicate, context) {
+    predicate || (predicate = _.identity);
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(predicate, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && predicate.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, predicate, context) {
+    predicate || (predicate = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(predicate, context);
+    each(obj, function(value, index, list) {
+      if (result || (result = predicate.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if the array or object contains a given value (using `===`).
+  // Aliased as `include`.
+  _.contains = _.include = function(obj, target) {
+    if (obj == null) return false;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    return any(obj, function(value) {
+      return value === target;
+    });
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    var isFunc = _.isFunction(method);
+    return _.map(obj, function(value) {
+      return (isFunc ? method : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, _.property(key));
+  };
+
+  // Convenience version of a common use case of `filter`: selecting only objects
+  // containing specific `key:value` pairs.
+  _.where = function(obj, attrs) {
+    return _.filter(obj, _.matches(attrs));
+  };
+
+  // Convenience version of a common use case of `find`: getting the first object
+  // containing specific `key:value` pairs.
+  _.findWhere = function(obj, attrs) {
+    return _.find(obj, _.matches(attrs));
+  };
+
+  // Return the maximum element or (element-based computation).
+  // Can't optimize arrays of integers longer than 65,535 elements.
+  // See [WebKit Bug 80797](https://bugs.webkit.org/show_bug.cgi?id=80797)
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.max.apply(Math, obj);
+    }
+    var result = -Infinity, lastComputed = -Infinity;
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      if (computed > lastComputed) {
+        result = value;
+        lastComputed = computed;
+      }
+    });
+    return result;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj) && obj[0] === +obj[0] && obj.length < 65535) {
+      return Math.min.apply(Math, obj);
+    }
+    var result = Infinity, lastComputed = Infinity;
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      if (computed < lastComputed) {
+        result = value;
+        lastComputed = computed;
+      }
+    });
+    return result;
+  };
+
+  // Shuffle an array, using the modern version of the
+  // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle).
+  _.shuffle = function(obj) {
+    var rand;
+    var index = 0;
+    var shuffled = [];
+    each(obj, function(value) {
+      rand = _.random(index++);
+      shuffled[index - 1] = shuffled[rand];
+      shuffled[rand] = value;
+    });
+    return shuffled;
+  };
+
+  // Sample **n** random values from a collection.
+  // If **n** is not specified, returns a single random element.
+  // The internal `guard` argument allows it to work with `map`.
+  _.sample = function(obj, n, guard) {
+    if (n == null || guard) {
+      if (obj.length !== +obj.length) obj = _.values(obj);
+      return obj[_.random(obj.length - 1)];
+    }
+    return _.shuffle(obj).slice(0, Math.max(0, n));
+  };
+
+  // An internal function to generate lookup iterators.
+  var lookupIterator = function(value) {
+    if (value == null) return _.identity;
+    if (_.isFunction(value)) return value;
+    return _.property(value);
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, iterator, context) {
+    iterator = lookupIterator(iterator);
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value: value,
+        index: index,
+        criteria: iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria;
+      var b = right.criteria;
+      if (a !== b) {
+        if (a > b || a === void 0) return 1;
+        if (a < b || b === void 0) return -1;
+      }
+      return left.index - right.index;
+    }), 'value');
+  };
+
+  // An internal function used for aggregate "group by" operations.
+  var group = function(behavior) {
+    return function(obj, iterator, context) {
+      var result = {};
+      iterator = lookupIterator(iterator);
+      each(obj, function(value, index) {
+        var key = iterator.call(context, value, index, obj);
+        behavior(result, key, value);
+      });
+      return result;
+    };
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = group(function(result, key, value) {
+    _.has(result, key) ? result[key].push(value) : result[key] = [value];
+  });
+
+  // Indexes the object's values by a criterion, similar to `groupBy`, but for
+  // when you know that your index values will be unique.
+  _.indexBy = group(function(result, key, value) {
+    result[key] = value;
+  });
+
+  // Counts instances of an object that group by a certain criterion. Pass
+  // either a string attribute to count by, or a function that returns the
+  // criterion.
+  _.countBy = group(function(result, key) {
+    _.has(result, key) ? result[key]++ : result[key] = 1;
+  });
+
+  // Use a comparator function to figure out the smallest index at which
+  // an object should be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator, context) {
+    iterator = lookupIterator(iterator);
+    var value = iterator.call(context, obj);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >>> 1;
+      iterator.call(context, array[mid]) < value ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely create a real, live array from anything iterable.
+  _.toArray = function(obj) {
+    if (!obj) return [];
+    if (_.isArray(obj)) return slice.call(obj);
+    if (obj.length === +obj.length) return _.map(obj, _.identity);
+    return _.values(obj);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    if (obj == null) return 0;
+    return (obj.length === +obj.length) ? obj.length : _.keys(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head` and `take`. The **guard** check
+  // allows it to work with `_.map`.
+  _.first = _.head = _.take = function(array, n, guard) {
+    if (array == null) return void 0;
+    if ((n == null) || guard) return array[0];
+    if (n < 0) return [];
+    return slice.call(array, 0, n);
+  };
+
+  // Returns everything but the last entry of the array. Especially useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    if (array == null) return void 0;
+    if ((n == null) || guard) return array[array.length - 1];
+    return slice.call(array, Math.max(array.length - n, 0));
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail` and `drop`.
+  // Especially useful on the arguments object. Passing an **n** will return
+  // the rest N values in the array. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = _.drop = function(array, n, guard) {
+    return slice.call(array, (n == null) || guard ? 1 : n);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, _.identity);
+  };
+
+  // Internal implementation of a recursive `flatten` function.
+  var flatten = function(input, shallow, output) {
+    if (shallow && _.every(input, _.isArray)) {
+      return concat.apply(output, input);
+    }
+    each(input, function(value) {
+      if (_.isArray(value) || _.isArguments(value)) {
+        shallow ? push.apply(output, value) : flatten(value, shallow, output);
+      } else {
+        output.push(value);
+      }
+    });
+    return output;
+  };
+
+  // Flatten out an array, either recursively (by default), or just one level.
+  _.flatten = function(array, shallow) {
+    return flatten(array, shallow, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
+
+  // Split an array into two arrays: one whose elements all satisfy the given
+  // predicate, and one whose elements all do not satisfy the predicate.
+  _.partition = function(array, predicate, context) {
+    predicate = lookupIterator(predicate);
+    var pass = [], fail = [];
+    each(array, function(elem) {
+      (predicate.call(context, elem) ? pass : fail).push(elem);
+    });
+    return [pass, fail];
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iterator, context) {
+    if (_.isFunction(isSorted)) {
+      context = iterator;
+      iterator = isSorted;
+      isSorted = false;
+    }
+    var initial = iterator ? _.map(array, iterator, context) : array;
+    var results = [];
+    var seen = [];
+    each(initial, function(value, index) {
+      if (isSorted ? (!index || seen[seen.length - 1] !== value) : !_.contains(seen, value)) {
+        seen.push(value);
+        results.push(array[index]);
+      }
+    });
+    return results;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(_.flatten(arguments, true));
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays.
+  _.intersection = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.contains(other, item);
+      });
+    });
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array) {
+    var rest = concat.apply(ArrayProto, slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.contains(rest, value); });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var length = _.max(_.pluck(arguments, 'length').concat(0));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) {
+      results[i] = _.pluck(arguments, '' + i);
+    }
+    return results;
+  };
+
+  // Converts lists into objects. Pass either a single array of `[key, value]`
+  // pairs, or two parallel arrays of the same length -- one of keys, and one of
+  // the corresponding values.
+  _.object = function(list, values) {
+    if (list == null) return {};
+    var result = {};
+    for (var i = 0, length = list.length; i < length; i++) {
+      if (values) {
+        result[list[i]] = values[i];
+      } else {
+        result[list[i][0]] = list[i][1];
+      }
+    }
+    return result;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i = 0, length = array.length;
+    if (isSorted) {
+      if (typeof isSorted == 'number') {
+        i = (isSorted < 0 ? Math.max(0, length + isSorted) : isSorted);
+      } else {
+        i = _.sortedIndex(array, item);
+        return array[i] === item ? i : -1;
+      }
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item, isSorted);
+    for (; i < length; i++) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
+    var hasIndex = from != null;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
+      return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);
+    }
+    var i = (hasIndex ? from : array.length);
+    while (i--) if (array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var length = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(length);
+
+    while(idx < length) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Reusable constructor function for prototype setting.
+  var ctor = function(){};
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if
+  // available.
+  _.bind = function(func, context) {
+    var args, bound;
+    if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    if (!_.isFunction(func)) throw new TypeError;
+    args = slice.call(arguments, 2);
+    return bound = function() {
+      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+      ctor.prototype = func.prototype;
+      var self = new ctor;
+      ctor.prototype = null;
+      var result = func.apply(self, args.concat(slice.call(arguments)));
+      if (Object(result) === result) return result;
+      return self;
+    };
+  };
+
+  // Partially apply a function by creating a version that has had some of its
+  // arguments pre-filled, without changing its dynamic `this` context. _ acts
+  // as a placeholder, allowing any combination of arguments to be pre-filled.
+  _.partial = function(func) {
+    var boundArgs = slice.call(arguments, 1);
+    return function() {
+      var position = 0;
+      var args = boundArgs.slice();
+      for (var i = 0, length = args.length; i < length; i++) {
+        if (args[i] === _) args[i] = arguments[position++];
+      }
+      while (position < arguments.length) args.push(arguments[position++]);
+      return func.apply(this, args);
+    };
+  };
+
+  // Bind a number of an object's methods to that object. Remaining arguments
+  // are the method names to be bound. Useful for ensuring that all callbacks
+  // defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length === 0) throw new Error('bindAll must be passed function names');
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(null, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time. Normally, the throttled function will run
+  // as much as it can, without ever going more than once per `wait` duration;
+  // but if you'd like to disable the execution on the leading edge, pass
+  // `{leading: false}`. To disable execution on the trailing edge, ditto.
+  _.throttle = function(func, wait, options) {
+    var context, args, result;
+    var timeout = null;
+    var previous = 0;
+    options || (options = {});
+    var later = function() {
+      previous = options.leading === false ? 0 : _.now();
+      timeout = null;
+      result = func.apply(context, args);
+      context = args = null;
+    };
+    return function() {
+      var now = _.now();
+      if (!previous && options.leading === false) previous = now;
+      var remaining = wait - (now - previous);
+      context = this;
+      args = arguments;
+      if (remaining <= 0) {
+        clearTimeout(timeout);
+        timeout = null;
+        previous = now;
+        result = func.apply(context, args);
+        context = args = null;
+      } else if (!timeout && options.trailing !== false) {
+        timeout = setTimeout(later, remaining);
+      }
+      return result;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds. If `immediate` is passed, trigger the function on the
+  // leading edge, instead of the trailing.
+  _.debounce = function(func, wait, immediate) {
+    var timeout, args, context, timestamp, result;
+
+    var later = function() {
+      var last = _.now() - timestamp;
+      if (last < wait) {
+        timeout = setTimeout(later, wait - last);
+      } else {
+        timeout = null;
+        if (!immediate) {
+          result = func.apply(context, args);
+          context = args = null;
+        }
+      }
+    };
+
+    return function() {
+      context = this;
+      args = arguments;
+      timestamp = _.now();
+      var callNow = immediate && !timeout;
+      if (!timeout) {
+        timeout = setTimeout(later, wait);
+      }
+      if (callNow) {
+        result = func.apply(context, args);
+        context = args = null;
+      }
+
+      return result;
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      memo = func.apply(this, arguments);
+      func = null;
+      return memo;
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return _.partial(wrapper, func);
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = arguments;
+    return function() {
+      var args = arguments;
+      for (var i = funcs.length - 1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    return function() {
+      if (--times < 1) {
+        return func.apply(this, arguments);
+      }
+    };
+  };
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = function(obj) {
+    if (!_.isObject(obj)) return [];
+    if (nativeKeys) return nativeKeys(obj);
+    var keys = [];
+    for (var key in obj) if (_.has(obj, key)) keys.push(key);
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    var keys = _.keys(obj);
+    var length = keys.length;
+    var values = new Array(length);
+    for (var i = 0; i < length; i++) {
+      values[i] = obj[keys[i]];
+    }
+    return values;
+  };
+
+  // Convert an object into a list of `[key, value]` pairs.
+  _.pairs = function(obj) {
+    var keys = _.keys(obj);
+    var length = keys.length;
+    var pairs = new Array(length);
+    for (var i = 0; i < length; i++) {
+      pairs[i] = [keys[i], obj[keys[i]]];
+    }
+    return pairs;
+  };
+
+  // Invert the keys and values of an object. The values must be serializable.
+  _.invert = function(obj) {
+    var result = {};
+    var keys = _.keys(obj);
+    for (var i = 0, length = keys.length; i < length; i++) {
+      result[obj[keys[i]]] = keys[i];
+    }
+    return result;
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Return a copy of the object only containing the whitelisted properties.
+  _.pick = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    each(keys, function(key) {
+      if (key in obj) copy[key] = obj[key];
+    });
+    return copy;
+  };
+
+   // Return a copy of the object without the blacklisted properties.
+  _.omit = function(obj) {
+    var copy = {};
+    var keys = concat.apply(ArrayProto, slice.call(arguments, 1));
+    for (var key in obj) {
+      if (!_.contains(keys, key)) copy[key] = obj[key];
+    }
+    return copy;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      if (source) {
+        for (var prop in source) {
+          if (obj[prop] === void 0) obj[prop] = source[prop];
+        }
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Internal recursive comparison function for `isEqual`.
+  var eq = function(a, b, aStack, bStack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal).
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null || b == null) return a === b;
+    // Unwrap any wrapped objects.
+    if (a instanceof _) a = a._wrapped;
+    if (b instanceof _) b = b._wrapped;
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return a == String(b);
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
+    }
+    if (typeof a != 'object' || typeof b != 'object') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    var length = aStack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (aStack[length] == a) return bStack[length] == b;
+    }
+    // Objects with different constructors are not equivalent, but `Object`s
+    // from different frames are.
+    var aCtor = a.constructor, bCtor = b.constructor;
+    if (aCtor !== bCtor && !(_.isFunction(aCtor) && (aCtor instanceof aCtor) &&
+                             _.isFunction(bCtor) && (bCtor instanceof bCtor))
+                        && ('constructor' in a && 'constructor' in b)) {
+      return false;
+    }
+    // Add the first object to the stack of traversed objects.
+    aStack.push(a);
+    bStack.push(b);
+    var size = 0, result = true;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          if (!(result = eq(a[size], b[size], aStack, bStack))) break;
+        }
+      }
+    } else {
+      // Deep compare objects.
+      for (var key in a) {
+        if (_.has(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (_.has(b, key) && !(size--)) break;
+        }
+        result = !size;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    aStack.pop();
+    bStack.pop();
+    return result;
+  };
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, [], []);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (obj == null) return true;
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (_.has(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType === 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) == '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
+  // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp.
+  each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
+    _['is' + name] = function(obj) {
+      return toString.call(obj) == '[object ' + name + ']';
+    };
+  });
+
+  // Define a fallback version of the method in browsers (ahem, IE), where
+  // there isn't any inspectable "Arguments" type.
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return !!(obj && _.has(obj, 'callee'));
+    };
+  }
+
+  // Optimize `isFunction` if appropriate.
+  if (typeof (/./) !== 'function') {
+    _.isFunction = function(obj) {
+      return typeof obj === 'function';
+    };
+  }
+
+  // Is a given object a finite number?
+  _.isFinite = function(obj) {
+    return isFinite(obj) && !isNaN(parseFloat(obj));
+  };
+
+  // Is the given value `NaN`? (NaN is the only number which does not equal itself).
+  _.isNaN = function(obj) {
+    return _.isNumber(obj) && obj != +obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Shortcut function for checking if an object has a given property directly
+  // on itself (in other words, not on a prototype).
+  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  _.constant = function(value) {
+    return function () {
+      return value;
+    };
+  };
+
+  _.property = function(key) {
+    return function(obj) {
+      return obj[key];
+    };
+  };
+
+  // Returns a predicate for checking whether an object has a given set of `key:value` pairs.
+  _.matches = function(attrs) {
+    return function(obj) {
+      if (obj === attrs) return true; //avoid comparing an object to itself.
+      for (var key in attrs) {
+        if (attrs[key] !== obj[key])
+          return false;
+      }
+      return true;
+    }
+  };
+
+  // Run a function **n** times.
+  _.times = function(n, iterator, context) {
+    var accum = Array(Math.max(0, n));
+    for (var i = 0; i < n; i++) accum[i] = iterator.call(context, i);
+    return accum;
+  };
+
+  // Return a random integer between min and max (inclusive).
+  _.random = function(min, max) {
+    if (max == null) {
+      max = min;
+      min = 0;
+    }
+    return min + Math.floor(Math.random() * (max - min + 1));
+  };
+
+  // A (possibly faster) way to get the current timestamp as an integer.
+  _.now = Date.now || function() { return new Date().getTime(); };
+
+  // List of HTML entities for escaping.
+  var entityMap = {
+    escape: {
+      '&': '&amp;',
+      '<': '&lt;',
+      '>': '&gt;',
+      '"': '&quot;',
+      "'": '&#x27;'
+    }
+  };
+  entityMap.unescape = _.invert(entityMap.escape);
+
+  // Regexes containing the keys and values listed immediately above.
+  var entityRegexes = {
+    escape:   new RegExp('[' + _.keys(entityMap.escape).join('') + ']', 'g'),
+    unescape: new RegExp('(' + _.keys(entityMap.unescape).join('|') + ')', 'g')
+  };
+
+  // Functions for escaping and unescaping strings to/from HTML interpolation.
+  _.each(['escape', 'unescape'], function(method) {
+    _[method] = function(string) {
+      if (string == null) return '';
+      return ('' + string).replace(entityRegexes[method], function(match) {
+        return entityMap[method][match];
+      });
+    };
+  });
+
+  // If the value of the named `property` is a function then invoke it with the
+  // `object` as context; otherwise, return it.
+  _.result = function(object, property) {
+    if (object == null) return void 0;
+    var value = object[property];
+    return _.isFunction(value) ? value.call(object) : value;
+  };
+
+  // Add your own custom functions to the Underscore object.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name) {
+      var func = _[name] = obj[name];
+      _.prototype[name] = function() {
+        var args = [this._wrapped];
+        push.apply(args, arguments);
+        return result.call(this, func.apply(_, args));
+      };
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = ++idCounter + '';
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g,
+    escape      : /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /(.)^/;
+
+  // Certain characters need to be escaped so that they can be put into a
+  // string literal.
+  var escapes = {
+    "'":      "'",
+    '\\':     '\\',
+    '\r':     'r',
+    '\n':     'n',
+    '\t':     't',
+    '\u2028': 'u2028',
+    '\u2029': 'u2029'
+  };
+
+  var escaper = /\\|'|\r|\n|\t|\u2028|\u2029/g;
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(text, data, settings) {
+    var render;
+    settings = _.defaults({}, settings, _.templateSettings);
+
+    // Combine delimiters into one regular expression via alternation.
+    var matcher = new RegExp([
+      (settings.escape || noMatch).source,
+      (settings.interpolate || noMatch).source,
+      (settings.evaluate || noMatch).source
+    ].join('|') + '|$', 'g');
+
+    // Compile the template source, escaping string literals appropriately.
+    var index = 0;
+    var source = "__p+='";
+    text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
+      source += text.slice(index, offset)
+        .replace(escaper, function(match) { return '\\' + escapes[match]; });
+
+      if (escape) {
+        source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
+      }
+      if (interpolate) {
+        source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
+      }
+      if (evaluate) {
+        source += "';\n" + evaluate + "\n__p+='";
+      }
+      index = offset + match.length;
+      return match;
+    });
+    source += "';\n";
+
+    // If a variable is not specified, place data values in local scope.
+    if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
+
+    source = "var __t,__p='',__j=Array.prototype.join," +
+      "print=function(){__p+=__j.call(arguments,'');};\n" +
+      source + "return __p;\n";
+
+    try {
+      render = new Function(settings.variable || 'obj', '_', source);
+    } catch (e) {
+      e.source = source;
+      throw e;
+    }
+
+    if (data) return render(data, _);
+    var template = function(data) {
+      return render.call(this, data, _);
+    };
+
+    // Provide the compiled function source as a convenience for precompilation.
+    template.source = 'function(' + (settings.variable || 'obj') + '){\n' + source + '}';
+
+    return template;
+  };
+
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
+  // OOP
+  // ---------------
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj) {
+    return this._chain ? _(obj).chain() : obj;
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      var obj = this._wrapped;
+      method.apply(obj, arguments);
+      if ((name == 'shift' || name == 'splice') && obj.length === 0) delete obj[0];
+      return result.call(this, obj);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    _.prototype[name] = function() {
+      return result.call(this, method.apply(this._wrapped, arguments));
+    };
+  });
+
+  _.extend(_.prototype, {
+
+    // Start chaining a wrapped Underscore object.
+    chain: function() {
+      this._chain = true;
+      return this;
+    },
+
+    // Extracts the result from a wrapped and chained object.
+    value: function() {
+      return this._wrapped;
+    }
+
+  });
+
+  // AMD registration happens at the end for compatibility with AMD loaders
+  // that may not enforce next-turn semantics on modules. Even though general
+  // practice for AMD registration is to be anonymous, underscore registers
+  // as a named module because, like jQuery, it is a base library that is
+  // popular enough to be bundled in a third party lib, but not be part of
+  // an AMD load request. Those cases could generate an error when an
+  // anonymous define() is called outside of a loader request.
+  if (typeof define === 'function' && define.amd) {
+    define('underscore', [], function() {
+      return _;
+    });
+  }
+}).call(this);
diff --git a/v3/opt-annotations.png b/v3/opt-annotations.png
new file mode 100644
index 000000000..9fff3305d
Binary files /dev/null and b/v3/opt-annotations.png differ
diff --git a/v3/opt-ipy-server.py b/v3/opt-ipy-server.py
new file mode 100755
index 000000000..33dff6e7c
--- /dev/null
+++ b/v3/opt-ipy-server.py
@@ -0,0 +1,105 @@
+# Adapted from https://github.com/facebook/tornado/tree/master/demos/websocket
+
+import logging
+import tornado.ioloop
+import tornado.options
+import tornado.web
+import tornado.websocket
+import os.path
+
+from tornado.options import define, options
+
+import json
+
+
+define("port", default=8888, help="run on the given port", type=int)
+
+
+class Application(tornado.web.Application):
+    # singleton
+    current_full_trace = None
+
+    def __init__(self):
+        handlers = [
+            (r"/js/(.*)",
+             tornado.web.StaticFileHandler,
+             {"path": os.path.join(os.path.dirname(__file__), 'js/')}),
+            (r"/css/(.*)",
+             tornado.web.StaticFileHandler,
+             {"path": os.path.join(os.path.dirname(__file__), 'css/')}),
+            (r"/", MainHandler),
+            (r"/chatsocket", ChatSocketHandler),
+            # respond to HTTP POST requests:
+            (r"/wholetrace", WholeTraceHandler),
+            (r"/difftrace", DiffTraceHandler),
+            (r"/clear", ClearHandler),
+        ]
+        tornado.web.Application.__init__(self, handlers)
+
+
+class MainHandler(tornado.web.RequestHandler):
+    def get(self):
+        self.render("opt-ipy.html")
+
+
+class WholeTraceHandler(tornado.web.RequestHandler):
+    def post(self):
+        message = self.request.body
+        dat = json.loads(message.decode())
+        Application.current_full_trace = dat
+
+        js_msg=dict(payload=Application.current_full_trace, type='wholetrace')
+        ChatSocketHandler.send_updates(json.dumps(js_msg))
+
+
+class DiffTraceHandler(tornado.web.RequestHandler):
+    def post(self):
+        # TODO: implement me using, say,
+        # https://code.google.com/p/google-diff-match-patch/
+        pass
+
+
+class ClearHandler(tornado.web.RequestHandler):
+    def post(self):
+        Application.current_full_trace = None
+        js_msg=dict(type='clear')
+        ChatSocketHandler.send_updates(json.dumps(js_msg))
+
+
+class ChatSocketHandler(tornado.websocket.WebSocketHandler):
+    waiters = set()
+
+    def allow_draft76(self):
+        # for iOS 5.0 Safari
+        return True
+
+    def open(self):
+        ChatSocketHandler.waiters.add(self)
+        # when a new connection is made, send the entire trace to only
+        # THIS browser
+        if Application.current_full_trace:
+            js_msg=dict(payload=Application.current_full_trace, type='wholetrace')
+            self.write_message(json.dumps(js_msg))
+
+    def on_close(self):
+        ChatSocketHandler.waiters.remove(self)
+
+    @classmethod
+    def send_updates(cls, chat):
+        #logging.info("sending message to %d waiters", len(cls.waiters))
+        for waiter in cls.waiters:
+            try:
+                waiter.write_message(chat)
+            except:
+                logging.error("Error sending message", exc_info=True)
+
+
+def main():
+    tornado.options.parse_command_line()
+    app = Application()
+    app.listen(options.port)
+    tornado.ioloop.IOLoop.instance().start()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/v3/opt-ipy.html b/v3/opt-ipy.html
new file mode 100644
index 000000000..ebad12520
--- /dev/null
+++ b/v3/opt-ipy.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+  <title>Online Python Tutor: interactive mode</title>
+
+<!-- dependencies for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors 
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+
+<!-- Python Tutor frontend code and styles -->
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/opt-ipy.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+</head>
+
+<body>
+
+  <div id="vizDiv"></div>
+
+<div id="footer">
+
+<p>
+<a href="http://pythontutor.com/">Online Python Tutor</a> supports <a
+href="http://www.python.org/doc/2.7/">Python 2.7</a> and <a
+href="http://www.python.org/doc/3.3.0/">Python 3.3</a> with limited module
+imports and no file I/O. 
+</p>
+
+<p>Have a question? Maybe the <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/user-FAQ.md">FAQ</a>
+or other <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/">documentation</a>
+can help. Or check out its code at <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>.</p>
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+
+
+</body>
+</html>
diff --git a/v3/opt-ipy.py b/v3/opt-ipy.py
new file mode 100644
index 000000000..b8d853539
--- /dev/null
+++ b/v3/opt-ipy.py
@@ -0,0 +1,192 @@
+# Online Python Tutor extension for the IPython shell
+# by Philip Guo (philip@pgbovine.net)
+# August 2013
+
+# When this extension is loaded, you can type code into the IPython
+# prompt and visualize its execution in a web browser.
+#
+# This extension also defines a '%clear' magic command to clear the
+# user's global environment and accompanying visualization.
+
+# One-minute video demo:
+# http://www.youtube.com/watch?v=Q3oarDuZPL0
+
+# Prerequisites:
+# - IPython shell (http://ipython.org/, tested on 0.13.1 and 1.0.dev)
+# - tornado Web server (http://www.tornadoweb.org/)
+#
+# One easy way to set up these prerequisites is by installing the
+# free Enthought Python Distribution:
+# https://www.enthought.com/products/epd/free/
+
+# Instructions:
+#
+# 1. Start a local web server
+#
+#    python opt-ipy-server.py
+#
+# 2. Load this URL in your browser:
+#
+#    http://localhost:8888/
+#
+# 3. Start the IPython shell in this directory by running:
+#
+#    ipython
+#
+# 4. Load this extension by running:
+#
+#    %load_ext opt-ipy
+#
+# At this point, as soon as you execute a Python statement in the
+# IPython shell, it should immediately be visualized in your browser.
+
+
+# If you're hosting the server remotely, then change this address:
+SERVER_ADDR = "http://localhost:8888/"
+
+assert SERVER_ADDR[-1] == '/'
+
+
+import sys, json
+import pg_logger
+
+# TODO: use the 'six' library to smooth out py2 and py3 differences
+is_python3 = (sys.version_info[0] == 3)
+
+
+viewitems = None
+urlopen = None
+if is_python3:
+    import urllib
+    urlopen = urllib.request.urlopen
+    viewitems = lambda x: x.items()
+
+else:
+    import urllib2
+    urlopen = urllib2.urlopen
+    viewitems = lambda x: x.iteritems()
+
+
+
+# Standardize display of floats to 3 significant figures
+#
+# Trick from:
+# http://stackoverflow.com/questions/1447287/format-floats-with-standard-json-module
+json.encoder.FLOAT_REPR = lambda f: ('%.3f' % f)
+
+#INDENT_LEVEL = 2   # human-readable
+INDENT_LEVEL = None # compact
+
+# TODO: support incremental pushes to the OPT frontend for efficiency
+# and better "snappiness"
+#
+# I think the easiest way to do diffs is to set INDENT_LEVEL = 2 above
+# and then simply send the diff of the JSON string to the server.
+# It's WAY TOO COMPLICATED to try implementing semantic diffs of the
+# OPT trace ourselves, since there are too many corner cases.
+#
+# text diffs are an elegant solution :)
+#
+# https://code.google.com/p/google-diff-match-patch/
+
+
+class OptHistory(object):
+    def __init__(self):
+        self.executed_stmts = []
+
+    def pop_last(self):
+        self.executed_stmts.pop()
+
+    def get_code(self):
+        return '\n'.join(self.executed_stmts)
+
+    def run_str_and_broadcast(self, stmt_str):
+        '''
+        Run stmt_str and transmit trace to server
+        '''
+        self.executed_stmts.append(stmt_str)
+
+        opt_trace = pg_logger.exec_script_str_local(self.get_code(), [], False, False,
+                                                    lambda cod, trace: trace)
+
+        last_evt = opt_trace[-1]['event']
+        if last_evt == 'exception':
+            epic_fail = True
+        else:
+            assert last_evt == 'return'
+            epic_fail = False
+
+        trace_dict = dict(code=self.get_code(), trace=opt_trace)
+        json_output = json.dumps(trace_dict, indent=INDENT_LEVEL)
+
+        # if this statement ended in an exception, delete it from the
+        # history and pretend it never happened
+        if epic_fail:
+            self.pop_last()
+
+        urlopen(SERVER_ADDR + 'wholetrace', json_output.encode())
+
+
+# called right before a statement gets executed
+def opt_pre_run_code_hook(self):
+    # when you run multiple statements on one line using a semicolon:
+    # e.g., "print x; print y", this function will fire multiple times.
+    # we want to avoid duplicates!
+    last_cmd = self.history_manager.input_hist_parsed[-1]
+    last_cmd_index = len(self.history_manager.input_hist_parsed) - 1
+
+    # also don't intercept special ipython commands
+    if 'get_ipython().' in last_cmd:
+        return
+
+    if self.meta.last_cmd_index == last_cmd_index:
+        assert self.meta.last_cmd == last_cmd
+        return # punt!!!
+
+    self.meta.last_cmd = last_cmd
+    self.meta.last_cmd_index = last_cmd_index
+
+    self.meta.opt_history.run_str_and_broadcast(last_cmd)
+
+
+# clear global namespace and reset history
+def opt_clear(self, params):
+    ip = get_ipython()
+
+    filtered_user_ns = set()
+    for k, v in viewitems(ip.user_ns):
+        if k[0] == '_':
+            continue
+        if k in ('In', 'Out', 'help', 'quit', 'exit', 'get_ipython'):
+            continue
+        filtered_user_ns.add(k)
+
+    for k in filtered_user_ns:
+        del ip.user_ns[k]
+
+    ip.meta.opt_history = OptHistory() # just create a new one!
+
+    urlopen(SERVER_ADDR + 'clear', 'blub'.encode()) # need a non-empty POST body
+
+
+def load_ipython_extension(ipython):
+    # The `ipython` argument is the currently active `InteractiveShell`
+    # instance, which can be used in any way. This allows you to register
+    # new magics or aliases, for example.
+
+    ipython.meta.opt_history = OptHistory()
+
+    ipython.meta.last_cmd = None
+    ipython.meta.last_cmd_index = -1 # set to an impossible initial value
+
+    # NB: spelling might be different in older IPython versions
+    ipython.set_hook('pre_run_code_hook', opt_pre_run_code_hook)
+    ipython.define_magic('clear', opt_clear)
+
+    print("Online Python Tutor extension loaded!")
+
+
+def unload_ipython_extension(ipython):
+    # If you want your extension to be unloadable, put that logic here.
+    pass
+
diff --git a/v3/opt-logo-32x32.png b/v3/opt-logo-32x32.png
new file mode 100644
index 000000000..243f39a43
Binary files /dev/null and b/v3/opt-logo-32x32.png differ
diff --git a/v3/opt-logo-96x96.png b/v3/opt-logo-96x96.png
new file mode 100644
index 000000000..ffb1d77f2
Binary files /dev/null and b/v3/opt-logo-96x96.png differ
diff --git a/v3/opt-office-mix.html b/v3/opt-office-mix.html
new file mode 100644
index 000000000..9761b76ea
--- /dev/null
+++ b/v3/opt-office-mix.html
@@ -0,0 +1,141 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Online Python Tutor - Visualize Python, Java, JavaScript, and TypeScript code execution</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- test cases -->
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-office-mix.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+
+<!-- for Office Mix Labs.js -->
+
+<!-- let's see if jQuery 1.8.2 works instead of their recommended version of 1.9.1 -->
+<!-- <script src="//ajax.aspnetcdn.com/ajax/jQuery/jquery-1.9.1.min.js"></script> -->
+
+<script src="https://appsforoffice.microsoft.com/lib/1.1/hosted/office.js" type="text/javascript"></script>
+<!-- From: https://labsjs.blob.core.windows.net/sdk/LabsJS-1.0.4/labs.html
+     "For publishing your app you must link to the file on the CDN." -->
+<script src="https://az592748.vo.msecnd.net/sdk/LabsJS-1.0.4/labs-1.0.4.js"></script>
+
+
+</head>
+
+<body>
+
+<div id="loadingPane" style="display: none; font-size: 18px; color: #e93f34;">
+</div>
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write code in
+
+  <select id="pythonVersionSelector">
+    <option value="2">Python 2.7</option>
+    <option value="3">Python 3.3</option>
+    <!--<option value="2crazy">Py 2.crazy</option>-->
+    <option value="java">Java</option>
+    <option value="js">JavaScript</option>
+    <option value="ts">TypeScript</option>
+    <option value="ruby">Ruby</option>
+  </select>
+
+</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+
+<button style="margin-top: 10px;" id="executeBtn" class="bigBtn">???</button>
+
+<p style="margin-top: 20px;">
+  <a href="#" id="createTestsLink">Create test cases</a>
+</p>
+
+<div id="testCasesPane"></div>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+<a href="http://pythontutor.com/" target="_blank">Online Python Tutor</a> supports
+Python 2.7 and 3.3, Java 7, JavaScript ES5 strict, TypeScript 1.4.1, and Ruby 2.2.2
+with limited module imports and no file I/O.
+<a href="support-and-privacy.html" target="_blank">Privacy and Terms of Use</a>.
+</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/" target="_blank">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+</body>
+</html>
diff --git a/v3/opt-v3-cs61a-embed-small.png b/v3/opt-v3-cs61a-embed-small.png
new file mode 100644
index 000000000..b60f3b042
Binary files /dev/null and b/v3/opt-v3-cs61a-embed-small.png differ
diff --git a/v3/opt-v3-cs61a-embed.png b/v3/opt-v3-cs61a-embed.png
new file mode 100644
index 000000000..c0ffcbd54
Binary files /dev/null and b/v3/opt-v3-cs61a-embed.png differ
diff --git a/v3/opt_togetherjs/Makefile b/v3/opt_togetherjs/Makefile
new file mode 100644
index 000000000..7fbd607ad
--- /dev/null
+++ b/v3/opt_togetherjs/Makefile
@@ -0,0 +1,7 @@
+# --host 0.0.0.0 is required to make the server PUBLIC-FACING!
+
+all:
+	jshint server.js && node server.js --host 0.0.0.0 --port 30035
+
+prod:
+	jshint server.js && forever -l togetherjs_server.log server.js --host 0.0.0.0 --port 30035
diff --git a/v3/opt_togetherjs/README.txt b/v3/opt_togetherjs/README.txt
new file mode 100644
index 000000000..a67db9cc0
--- /dev/null
+++ b/v3/opt_togetherjs/README.txt
@@ -0,0 +1,6 @@
+server.js is forked from TogetherJS togetherjs/hub/server.js on
+2014-05-08 and augmented with extra logging and an admin interface
+
+To run both locally and online, use:
+
+node server.js --host 0.0.0.0 --port 30035
diff --git a/v3/opt_togetherjs/server.js b/v3/opt_togetherjs/server.js
new file mode 100644
index 000000000..5a6a8d77d
--- /dev/null
+++ b/v3/opt_togetherjs/server.js
@@ -0,0 +1,520 @@
+// 2014-05-08 Philip Guo forked this code from TogetherJS
+// togetherjs/hub/server.js and started making modifications marked by
+// 'pgbovine' in comments
+
+// Try to run with the following options to (hopefully!) prevent it from
+// mysteriously crashing and failing to restart (use --spinSleepTime to
+// wait a bit longer before attempting to restart it upon a crash)
+//
+// forever -a -l togetherjs.log --spinSleepTime 30000 -o togetherjs.out -e togetherjs.err start /home/pgbovine/OnlinePythonTutor/v3/opt_togetherjs/server.js --host 0.0.0.0 --port 30035
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// New Relic Server monitoring support
+if ( process.env.NEW_RELIC_HOME ) {
+  require("newrelic");
+}
+
+var SAMPLE_STATS_INTERVAL = 60*1000; // 1 minute
+var SAMPLE_LOAD_INTERVAL = 5*60*1000; // 5 minutes
+var EMPTY_ROOM_LOG_TIMEOUT = 3*60*1000; // 3 minutes
+
+var WebSocketServer = require('websocket').server;
+var WebSocketRouter = require('websocket').router;
+var http = require('http');
+var parseUrl = require('url').parse;
+var fs = require('fs');
+
+// FIXME: not sure what logger to use
+//var logger = require('../../lib/logger');
+
+// LOG_LEVEL values:
+// 0: show everything (including debug)
+// 1: don't show debug, do show logger.log
+// 2: don't show logger.log and debug, do show logger.info (and STATS)
+// 3: don't show info, do show warn
+// 4: don't show warn, do show error
+// 5: don't show anything
+// Stats are at level 2
+
+var thisSource = "// What follows is the source for the server.\n" +
+    "// Obviously we can't prove this is the actual source, but if it isn't then we're \n" +
+    "// a bunch of lying liars, so at least you have us on record.\n\n" +
+    fs.readFileSync(__filename);
+
+var Logger = function (level, filename, stdout) {
+  this.level = level;
+  this.filename = filename;
+  this.stdout = !!stdout;
+  this._open();
+  process.on("SIGUSR2", (function () {
+    this._open();
+  }).bind(this));
+};
+
+Logger.prototype = {
+
+  write: function () {
+    if (this.stdout) {
+      console.log.apply(console, arguments);
+    }
+    if (this.file) {
+      var s = [];
+      for (var i=0; i<arguments.length; i++) {
+        var a = arguments[i];
+        if (typeof a == "string") {
+          s.push(a);
+        } else {
+          s.push(JSON.stringify(a));
+        }
+      }
+      s = s.join(" ") + "\n";
+      this.file.write(this.date() + " " + s);
+    }
+  },
+
+  date: function () {
+    return (new Date()).toISOString();
+  },
+
+  _open: function () {
+    if (this.file) {
+      this.file.end(this.date() + " Logs rotating\n");
+      this.file = null;
+    }
+    if (this.filename) {
+      this.file = fs.createWriteStream(this.filename, {flags: 'a', mode: parseInt('644', 8), encoding: "UTF-8"});
+    }
+  }
+
+};
+
+[["error", 4], ["warn", 3], ["info", 2], ["log", 1], ["debug", 0]].forEach(function (nameLevel) {
+  var name = nameLevel[0];
+  var level = nameLevel[1];
+  Logger.prototype[name] = function () {
+    if (logLevel <= level) {
+      if (name != "log") {
+        this.write.apply(this, [name.toUpperCase()].concat(Array.prototype.slice.call(arguments)));
+      } else {
+        this.write.apply(this, arguments);
+      }
+    }
+  };
+});
+
+var logger = new Logger(0, null, true);
+
+var server = http.createServer(function(request, response) {
+  var url = parseUrl(request.url, true);
+  var protocol = request.headers["forwarded-proto"] || "http:";
+  var host = request.headers.host;
+  var base = protocol + "//" + host;
+
+  if (url.pathname == '/status') {
+    response.end("OK");
+  } else if (url.pathname == '/load') {
+    var load = getLoad();
+    response.writeHead(200, {"Content-Type": "text/plain"});
+    response.end("OK " + load.connections + " connections " +
+                 load.sessions + " sessions; " +
+                 load.solo + " are single-user and " +
+                 (load.sessions - load.solo) + " active sessions");
+  } else if (url.pathname == '/server-source') {
+    response.writeHead(200, {"Content-Type": "text/plain"});
+    response.end(thisSource);
+  } else if (url.pathname == '/findroom') {
+    if (request.method == "OPTIONS") {
+      // CORS preflight
+      corsAccept(request, response);
+      return;
+    }
+    var prefix = url.query.prefix;
+    var max = parseInt(url.query.max, 10);
+    if (! (prefix && max)) {
+      write400("You must include a valid prefix=CHARS&max=NUM portion of the URL", response);
+      return;
+    }
+    if (prefix.search(/[^a-zA-Z0-9]/) != -1) {
+      write400("Invalid prefix", response);
+      return;
+    }
+    findRoom(prefix, max, response);
+  } else {
+    write404(response);
+  }
+});
+
+function corsAccept(request, response) {
+  response.writeHead(200, {
+    "Access-Control-Allow-Origin": "*"
+  });
+  response.end();
+}
+
+function write500(error, response) {
+  response.writeHead(500, {"Content-Type": "text/plain"});
+  if (typeof error != "string") {
+    error = "\n" + JSON.stringify(error, null, "  ");
+  }
+  response.end("Error: " + error);
+}
+
+function write404(response) {
+  response.writeHead(404, {"Content-Type": "text/plain"});
+  response.end("Resource not found");
+}
+
+function write400(error, response) {
+  response.writeHead(400, {"Content-Type": "text/plain", "Access-Control-Allow-Origin": "*"});
+  response.end("Bad request: " + error);
+}
+
+function findRoom(prefix, max, response) {
+  response.writeHead(200, {
+    "Content-Type": "application/json",
+    "Access-Control-Allow-Origin": "*"
+  });
+  var smallestNumber;
+  var smallestRooms = [];
+  for (var candidate in allConnections) {
+    if (candidate.indexOf(prefix + "__") === 0) {
+      var count = allConnections[candidate].length;
+      if (count < max && (smallestNumber === undefined || count <= smallestNumber)) {
+        if (smallestNumber === undefined || count < smallestNumber) {
+          smallestNumber = count;
+          smallestRooms = [candidate];
+        } else {
+          smallestRooms.push(candidate);
+        }
+      }
+    }
+  }
+  var room;
+  if (! smallestRooms.length) {
+    room = prefix + "__" + generateId();
+  } else {
+    room = pickRandom(smallestRooms);
+  }
+  response.end(JSON.stringify({name: room}));
+}
+
+function generateId(length) {
+  length = length || 10;
+  var letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUV0123456789';
+  var s = '';
+  for (var i=0; i<length; i++) {
+    s += letters.charAt(Math.floor(Math.random() * letters.length));
+  }
+  return s;
+}
+
+function pickRandom(seq) {
+  return seq[Math.floor(Math.random() * seq.length)];
+}
+
+function startServer(port, host) {
+  server.listen(port, host, function() {
+    logger.info('HUB Server listening on port ' + port + " interface: " + host + " PID: " + process.pid);
+  });
+}
+
+var wsServer = new WebSocketServer({
+    httpServer: server,
+    // 10Mb max size (1Mb is default, maybe this bump is unnecessary)
+    maxReceivedMessageSize: 0x1000000,
+    // The browser doesn't seem to break things up into frames (not sure what this means)
+    // and the default of 64Kb was exceeded; raised to 1Mb
+    maxReceivedFrameSize: 0x100000,
+    // Using autoaccept because the origin is somewhat dynamic
+    // FIXME: make this smarter?
+    autoAcceptConnections: false
+});
+
+function originIsAllowed(origin) {
+  // Unfortunately the origin will be whatever page you are sharing,
+  // which could be any origin
+  return true;
+}
+
+var allConnections = {};
+var connectionStats = {};
+
+var ID = 0;
+
+wsServer.on('request', function(request) {
+  if (!originIsAllowed(request.origin)) {
+    // Make sure we only accept requests from an allowed origin
+    request.reject();
+    logger.info('Connection from origin ' + request.origin + ' rejected.');
+    return;
+  }
+
+  var id = request.httpRequest.url.replace(/^\/+hub\/+/, '').replace(/\//g, "");
+  if (! id) {
+    request.reject(404, 'No ID Found');
+    return;
+  }
+
+  // FIXME: we should use a protocol here instead of null, but I can't
+  // get it to work.  "Protocol" is what the two clients are using
+  // this channel for (we don't bother to specify this)
+  var connection = request.accept(null, request.origin);
+  connection.ID = ID++;
+  if (! allConnections[id]) {
+    allConnections[id] = [];
+    connectionStats[id] = {
+      created: Date.now(),
+      sample: [],
+      clients: {},
+      domains: {},
+      urls: {},
+      firstDomain: null,
+      totalMessageChars: 0,
+      totalMessages: 0,
+      connections: 0
+    };
+  }
+  allConnections[id].push(connection);
+  connectionStats[id].connections++;
+  connectionStats[id].lastLeft = null;
+  logger.debug('Connection accepted to ' + JSON.stringify(id) + ' ID:' + connection.ID);
+  connection.sendUTF(JSON.stringify({
+    type: "init-connection",
+    peerCount: allConnections[id].length-1
+  }));
+  connection.on('message', function(message) {
+    var parsed;
+    try {
+      parsed = JSON.parse(message.utf8Data);
+    } catch (e) {
+      logger.warn('Error parsing JSON: ' + JSON.stringify(message.utf8Data) + ": " + e);
+      return;
+    }
+    connectionStats[id].clients[parsed.clientId] = true;
+    var domain = null;
+    if (parsed.url) {
+      domain = parseUrl(parsed.url).hostname;
+      connectionStats[id].urls[parsed.url] = true;
+    }
+    if ((! connectionStats[id].firstDomain) && domain) {
+      connectionStats[id].firstDomain = domain;
+    }
+    connectionStats[id].domains[domain] = true;
+    connectionStats[id].totalMessageChars += message.utf8Data.length;
+    connectionStats[id].totalMessages++;
+    logger.debug('Message on ' + id + ' bytes: ' +
+                 (message.utf8Data && message.utf8Data.length) +
+                 ' conn ID: ' + connection.ID + ' data:' + message.utf8Data.substr(0, 20) +
+                 ' connections: ' + allConnections[id].length);
+
+    // ignore some kinds of extraneous noisy events
+    if (parsed.type != 'cursor-update' &&
+        parsed.type != 'scroll-update' &&
+        parsed.type != 'keydown' &&
+        parsed.type != 'form-init' &&
+        parsed.type != 'form-focus' &&
+        parsed.type != 'form-update' &&
+        parsed.type != 'hello-back' &&
+        parsed.type != 'app.codemirror-edit'
+        ) {
+      var logObj = createLogEntry(request);
+      logObj.id = id;
+      logObj.type = 'togetherjs';
+      logObj.togetherjs = parsed;
+      pgLogWrite(logObj);
+    }
+
+    for (var i=0; i<allConnections[id].length; i++) {
+      var c = allConnections[id][i];
+      if (c == connection && !parsed["server-echo"]) {
+        continue;
+      }
+      if (message.type === 'utf8') {
+        c.sendUTF(message.utf8Data);
+      } else if (message.type === 'binary') {
+        c.sendBytes(message.binaryData);
+      }
+    }
+  });
+  connection.on('close', function(reasonCode, description) {
+    if (! allConnections[id]) {
+      // Got cleaned up entirely, somehow?
+      logger.info("Connection ID", id, "was cleaned up entirely before last connection closed");
+      return;
+    }
+    var index = allConnections[id].indexOf(connection);
+    if (index != -1) {
+      allConnections[id].splice(index, 1);
+    }
+    if (! allConnections[id].length) {
+      delete allConnections[id];
+      connectionStats[id].lastLeft = Date.now();
+    }
+    logger.debug('Peer ' + connection.remoteAddress + ' disconnected, ID: ' + connection.ID);
+
+    var logObj = createLogEntry(request, 'websocket-connection-closed');
+    logObj.id = id;
+    pgLogWrite(logObj);
+  });
+});
+
+setInterval(function () {
+  for (var id in connectionStats) {
+    if (connectionStats[id].lastLeft && Date.now() - connectionStats[id].lastLeft > EMPTY_ROOM_LOG_TIMEOUT) {
+      logStats(id, connectionStats[id]);
+      delete connectionStats[id];
+      continue;
+    }
+    var totalClients = countClients(connectionStats[id].clients);
+    var connections = 0;
+    if (allConnections[id]) {
+      connections = allConnections[id].length;
+    }
+    connectionStats[id].sample.push({
+      time: Date.now(),
+      totalClients: totalClients,
+      connections: connections
+    });
+  }
+}, SAMPLE_STATS_INTERVAL);
+
+setInterval(function () {
+  var load = getLoad();
+  load.time = Date.now();
+  logger.info("LOAD", JSON.stringify(load));
+}, SAMPLE_LOAD_INTERVAL);
+
+function getLoad() {
+  var sessions = 0;
+  var connections = 0;
+  var empty = 0;
+  var solo = 0;
+  for (var id in allConnections) {
+    if (allConnections[id].length) {
+      sessions++;
+      connections += allConnections[id].length;
+      if (allConnections[id].length == 1) {
+        solo++;
+      }
+    } else {
+      empty++;
+    }
+  }
+  return {
+    sessions: sessions,
+    connections: connections,
+    empty: empty,
+    solo: solo
+  };
+}
+
+function countClients(clients) {
+  var n = 0;
+  for (var clientId in clients) {
+    n++;
+  }
+  return n;
+}
+
+function logStats(id, stats) {
+  logger.info("STATS", JSON.stringify({
+    id: id,
+    created: stats.created,
+    sample: stats.sample,
+    totalClients: countClients(stats.clients),
+    totalMessageChars: stats.totalMessageChars,
+    totalMessages: stats.totalMessages,
+    domain: stats.firstDomain || null,
+    domainCount: countClients(stats.domains),
+    urls: countClients(stats.urls)
+  }));
+}
+
+if (require.main == module) {
+  var ops = require('optimist')
+      .usage("Usage: $0 [--port 8080] [--host=localhost] [--log=filename] [--log-level=N]")
+      .describe("port", "The port to server on (default $HUB_SERVER_PORT, $PORT, $VCAP_APP_PORT, or 8080")
+      .describe("host", "The interface to serve on (default $HUB_SERVER_HOST, $HOST, $VCAP_APP_HOST, 127.0.0.1).  Use 0.0.0.0 to make it public")
+      .describe("log-level", "The level of logging to do, from 0 (very verbose) to 5 (nothing) (default $LOG_LEVEL or 0)")
+      .describe("log", "A file to log to (default stdout)")
+      .describe("stdout", "Log to both stdout and the log file");
+  var port = ops.argv.port || process.env.HUB_SERVER_PORT || process.env.VCAP_APP_PORT ||
+      process.env.PORT || 8080;
+  var host = ops.argv.host || process.env.HUB_SERVER_HOST || process.env.VCAP_APP_HOST ||
+      process.env.HOST || '127.0.0.1';
+  var logLevel = 5; // pgbovine -- set default to no logging for simplicity
+  var stdout = ops.argv.stdout || !ops.argv.log;
+  if (ops.argv['log-level']) {
+    logLevel = parseInt(ops.argv['log-level'], 10);
+  }
+  logger = new Logger(logLevel, ops.argv.log, stdout);
+  if (ops.argv.h || ops.argv.help) {
+    console.log(ops.help());
+    process.exit();
+  } else {
+    startServer(port, host);
+  }
+}
+
+exports.startServer = startServer;
+
+
+// pgbovine - logging infrastructure
+
+function createLogEntry(req, event_type) {
+  obj = {};
+
+  // Webfaction forwards IP addresses via proxy, so use this ...
+  // http://stackoverflow.com/questions/8107856/how-can-i-get-the-users-ip-address-using-node-js
+  var ip = req.remoteAddress /* check this FIRST since it's for WebSockets */ ||
+    req.headers['x-forwarded-for'] ||
+    req.connection.remoteAddress ||
+    req.socket.remoteAddress ||
+    req.connection.socket.remoteAddress;
+
+  obj.ip = ip;
+  obj.date = (new Date()).toISOString();
+  if (event_type) {
+    obj.type = event_type;
+  }
+
+  return obj;
+}
+
+
+// pgbovine - TogetherJS administrator hub
+
+var pgLogFile = null;
+
+var MAX_LOG_SIZE = 10000;
+var curLogSize = 0;
+
+function pgLogWrite(logObj) {
+  var s = JSON.stringify(logObj);
+  //console.log(s); // debug
+
+  // rotate log every MAX_LOG_SIZE entries
+  if (!pgLogFile || curLogSize >= MAX_LOG_SIZE) {
+    if (pgLogFile) {
+      pgLogFile.end();
+    }
+    var filename = 'log_' + logObj.date + '.json';
+    var pathname = require('path').resolve(__dirname, filename);
+    pgLogFile = fs.createWriteStream(pathname,
+                                     {flags: 'w',
+                                      mode: parseInt('644', 8),
+                                      encoding: "UTF-8"});
+    curLogSize = 0;
+  }
+
+  // I think this write is buffered in memory, so it's safe to do
+  // multiple "concurrent" writes since it will all be buffered
+  // http://nodejs.org/api/stream.html#stream_writable_write_chunk_encoding_callback
+  pgLogFile.write(s + '\n');
+  curLogSize++;
+}
+
+// end pgbovine
diff --git a/v3/pg_encoder.py b/v3/pg_encoder.py
new file mode 100644
index 000000000..7cf0c8ed7
--- /dev/null
+++ b/v3/pg_encoder.py
@@ -0,0 +1,377 @@
+# Online Python Tutor
+# https://github.com/pgbovine/OnlinePythonTutor/
+#
+# Copyright (C) Philip J. Guo (philip@pgbovine.net)
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+# Thanks to John DeNero for making the encoder work on both Python 2 and 3
+
+
+# Given an arbitrary piece of Python data, encode it in such a manner
+# that it can be later encoded into JSON.
+#   http://json.org/
+#
+# We use this function to encode run-time traces of data structures
+# to send to the front-end.
+#
+# Format:
+#   Primitives:
+#   * None, int, long, float, str, bool - unchanged
+#     (json.dumps encodes these fine verbatim, except for inf, -inf, and nan)
+#
+#   exceptions: float('inf')  -> ['SPECIAL_FLOAT', 'Infinity']
+#               float('-inf') -> ['SPECIAL_FLOAT', '-Infinity']
+#               float('nan')  -> ['SPECIAL_FLOAT', 'NaN']
+#               x == int(x)   -> ['SPECIAL_FLOAT', '%.1f' % x]
+#               (this way, 3.0 prints as '3.0' and not as 3, which looks like an int)
+#
+#   If render_heap_primitives is True, then primitive values are rendered
+#   on the heap as ['HEAP_PRIMITIVE', <type name>, <value>]
+#
+#   (for SPECIAL_FLOAT values, <value> is a list like ['SPECIAL_FLOAT', 'Infinity'])
+#
+#   Compound objects:
+#   * list     - ['LIST', elt1, elt2, elt3, ..., eltN]
+#   * tuple    - ['TUPLE', elt1, elt2, elt3, ..., eltN]
+#   * set      - ['SET', elt1, elt2, elt3, ..., eltN]
+#   * dict     - ['DICT', [key1, value1], [key2, value2], ..., [keyN, valueN]]
+#   * instance - ['INSTANCE', class name, [attr1, value1], [attr2, value2], ..., [attrN, valueN]]
+#   * instance with __str__ defined - ['INSTANCE_PPRINT', class name, <__str__ value>]
+#   * class    - ['CLASS', class name, [list of superclass names], [attr1, value1], [attr2, value2], ..., [attrN, valueN]]
+#   * function - ['FUNCTION', function name, parent frame ID (for nested functions)]
+#   * module   - ['module', module name]
+#   * other    - [<type name>, string representation of object]
+#   * compound object reference - ['REF', target object's unique_id]
+#
+# the unique_id is derived from id(), which allows us to capture aliasing
+
+
+# number of significant digits for floats
+FLOAT_PRECISION = 4
+
+
+from collections import defaultdict
+import re, types
+import sys
+import math
+typeRE = re.compile("<type '(.*)'>")
+classRE = re.compile("<class '(.*)'>")
+
+import inspect
+
+# TODO: maybe use the 'six' library to smooth over Py2 and Py3 incompatibilities?
+is_python3 = (sys.version_info[0] == 3)
+if is_python3:
+  # avoid name errors (GROSS!)
+  long = int
+  unicode = str
+
+
+def is_class(dat):
+  """Return whether dat is a class."""
+  if is_python3:
+    return isinstance(dat, type)
+  else:
+    return type(dat) in (types.ClassType, types.TypeType)
+
+
+def is_instance(dat):
+  """Return whether dat is an instance of a class."""
+  if is_python3:
+    return type(dat) not in PRIMITIVE_TYPES and \
+           isinstance(type(dat), type) and \
+           not isinstance(dat, type)
+  else:
+    # ugh, classRE match is a bit of a hack :(
+    return type(dat) == types.InstanceType or classRE.match(str(type(dat)))
+
+
+def get_name(obj):
+  """Return the name of an object."""
+  return obj.__name__ if hasattr(obj, '__name__') else get_name(type(obj))
+
+
+PRIMITIVE_TYPES = (int, long, float, str, unicode, bool, type(None))
+
+def encode_primitive(dat):
+  t = type(dat)
+  if t is float:
+    if math.isinf(dat):
+      if dat > 0:
+        return ['SPECIAL_FLOAT', 'Infinity']
+      else:
+        return ['SPECIAL_FLOAT', '-Infinity']
+    elif math.isnan(dat):
+      return ['SPECIAL_FLOAT', 'NaN']
+    else:
+      # render floats like 3.0 as '3.0' and not as 3
+      if dat == int(dat):
+        return ['SPECIAL_FLOAT', '%.1f' % dat]
+      else:
+        return round(dat, FLOAT_PRECISION)
+  elif t is str and (not is_python3):
+    # hack only for Python 2 strings ... always turn into unicode
+    # and display '?' when it's not valid unicode
+    return dat.decode('utf-8', 'replace')
+  else:
+    # return all other primitives verbatim
+    return dat
+
+
+# grab a line number like ' <line 2>' or ' <line 2b>'
+def create_lambda_line_number(codeobj, line_to_lambda_code):
+  try:
+    lambda_lineno = codeobj.co_firstlineno
+    lst = line_to_lambda_code[lambda_lineno]
+    ind = lst.index(codeobj)
+    # add a suffix for all subsequent lambdas on a line beyond the first
+    # (nix this for now because order isn't guaranteed when you have
+    #  multiple lambdas on the same line)
+    '''
+    if ind > 0:
+      lineno_str = str(lambda_lineno) + chr(ord('a') + ind)
+    else:
+      lineno_str = str(lambda_lineno)
+    '''
+    lineno_str = str(lambda_lineno)
+    return ' <line ' + lineno_str + '>'
+  except:
+    return ''
+
+
+# Note that this might BLOAT MEMORY CONSUMPTION since we're holding on
+# to every reference ever created by the program without ever releasing
+# anything!
+class ObjectEncoder:
+  def __init__(self, render_heap_primitives):
+    # Key: canonicalized small ID
+    # Value: encoded (compound) heap object
+    self.encoded_heap_objects = {}
+
+    self.render_heap_primitives = render_heap_primitives
+
+    self.id_to_small_IDs = {}
+    self.cur_small_ID = 1
+
+    # wow, creating unique identifiers for lambdas is quite annoying,
+    # especially if we want to properly differentiate:
+    # 1.) multiple lambdas defined on the same line, and
+    # 2.) the same lambda code defined multiple times on different lines
+    #
+    # However, it gets confused when there are multiple identical
+    # lambdas on the same line, like:
+    # f(lambda x:x*x, lambda y:y*y, lambda x:x*x)
+
+    # (assumes everything is in one file)
+    # Key:   line number
+    # Value: list of the code objects of lambdas defined
+    #        on that line in the order they were defined
+    self.line_to_lambda_code = defaultdict(list)
+
+
+  def get_heap(self):
+    return self.encoded_heap_objects
+
+
+  def reset_heap(self):
+    # VERY IMPORTANT to reassign to an empty dict rather than just
+    # clearing the existing dict, since get_heap() could have been
+    # called earlier to return a reference to a previous heap state
+    self.encoded_heap_objects = {}
+
+  def set_function_parent_frame_ID(self, ref_obj, enclosing_frame_id):
+    assert ref_obj[0] == 'REF'
+    func_obj = self.encoded_heap_objects[ref_obj[1]]
+    assert func_obj[0] == 'FUNCTION'
+    func_obj[-1] = enclosing_frame_id
+
+
+  # return either a primitive object or an object reference;
+  # and as a side effect, update encoded_heap_objects
+  def encode(self, dat, get_parent):
+    """Encode a data value DAT using the GET_PARENT function for parent ids."""
+    # primitive type
+    if not self.render_heap_primitives and type(dat) in PRIMITIVE_TYPES:
+      return encode_primitive(dat)
+    # compound type - return an object reference and update encoded_heap_objects
+    else:
+      my_id = id(dat)
+
+      try:
+        my_small_id = self.id_to_small_IDs[my_id]
+      except KeyError:
+        my_small_id = self.cur_small_ID
+        self.id_to_small_IDs[my_id] = self.cur_small_ID
+        self.cur_small_ID += 1
+
+      del my_id # to prevent bugs later in this function
+
+      ret = ['REF', my_small_id]
+
+      # punt early if you've already encoded this object
+      if my_small_id in self.encoded_heap_objects:
+        return ret
+
+
+      # major side-effect!
+      new_obj = []
+      self.encoded_heap_objects[my_small_id] = new_obj
+
+      typ = type(dat)
+
+      if typ == list:
+        new_obj.append('LIST')
+        for e in dat:
+          new_obj.append(self.encode(e, get_parent))
+      elif typ == tuple:
+        new_obj.append('TUPLE')
+        for e in dat:
+          new_obj.append(self.encode(e, get_parent))
+      elif typ == set:
+        new_obj.append('SET')
+        for e in dat:
+          new_obj.append(self.encode(e, get_parent))
+      elif typ == dict:
+        new_obj.append('DICT')
+        for (k, v) in dat.items():
+          # don't display some built-in locals ...
+          if k not in ('__module__', '__return__', '__locals__'):
+            new_obj.append([self.encode(k, get_parent), self.encode(v, get_parent)])
+      elif typ in (types.FunctionType, types.MethodType):
+        if is_python3:
+          argspec = inspect.getfullargspec(dat)
+        else:
+          argspec = inspect.getargspec(dat)
+
+        printed_args = [e for e in argspec.args]
+        if argspec.varargs:
+          printed_args.append('*' + argspec.varargs)
+
+        if is_python3:
+          if argspec.varkw:
+            printed_args.append('**' + argspec.varkw)
+          if argspec.kwonlyargs:
+            printed_args.extend(argspec.kwonlyargs)
+        else:
+          if argspec.keywords:
+            printed_args.append('**' + argspec.keywords)
+
+        func_name = get_name(dat)
+
+        pretty_name = func_name
+
+        # sometimes might fail for, say, <genexpr>, so just ignore
+        # failures for now ...
+        try:
+          pretty_name += '(' + ', '.join(printed_args) + ')'
+        except TypeError:
+          pass
+
+        # put a line number suffix on lambdas to more uniquely identify
+        # them, since they don't have names
+        if func_name == '<lambda>':
+            cod = (dat.__code__ if is_python3 else dat.func_code) # ugh!
+            lst = self.line_to_lambda_code[cod.co_firstlineno]
+            if cod not in lst:
+                lst.append(cod)
+            pretty_name += create_lambda_line_number(cod,
+                                                     self.line_to_lambda_code)
+
+        encoded_val = ['FUNCTION', pretty_name, None]
+        if get_parent:
+          enclosing_frame_id = get_parent(dat)
+          encoded_val[2] = enclosing_frame_id
+        new_obj.extend(encoded_val)
+      elif typ is types.BuiltinFunctionType:
+        pretty_name = get_name(dat) + '(...)'
+        new_obj.extend(['FUNCTION', pretty_name, None])
+      elif is_class(dat) or is_instance(dat):
+        self.encode_class_or_instance(dat, new_obj)
+      elif typ is types.ModuleType:
+        new_obj.extend(['module', dat.__name__])
+      elif typ in PRIMITIVE_TYPES:
+        assert self.render_heap_primitives
+        new_obj.extend(['HEAP_PRIMITIVE', type(dat).__name__, encode_primitive(dat)])
+      else:
+        typeStr = str(typ)
+        m = typeRE.match(typeStr)
+
+        if not m:
+          m = classRE.match(typeStr)
+
+        assert m, typ
+
+        if is_python3:
+          encoded_dat = str(dat)
+        else:
+          # ugh, for bytearray() in Python 2, str() returns
+          # non-JSON-serializable characters, so need to decode:
+          encoded_dat = str(dat).decode('utf-8', 'replace')
+        new_obj.extend([m.group(1), encoded_dat])
+
+      return ret
+
+
+  def encode_class_or_instance(self, dat, new_obj):
+    """Encode dat as a class or instance."""
+    if is_instance(dat):
+      if hasattr(dat, '__class__'):
+        # common case ...
+        class_name = get_name(dat.__class__)
+      else:
+        # super special case for something like
+        # "from datetime import datetime_CAPI" in Python 3.2,
+        # which is some weird 'PyCapsule' type ...
+        # http://docs.python.org/release/3.1.5/c-api/capsule.html
+        class_name = get_name(type(dat))
+
+      if hasattr(dat, '__str__') and \
+         (not dat.__class__.__str__ is object.__str__): # make sure it's not the lame default __str__
+        # N.B.: when objects are being constructed, this call
+        # might fail since not all fields have yet been populated
+        try:
+          pprint_str = str(dat)
+        except:
+          pprint_str = '<incomplete object>'
+
+        new_obj.extend(['INSTANCE_PPRINT', class_name, pprint_str])
+        return # bail early
+      else:
+        new_obj.extend(['INSTANCE', class_name])
+        # don't traverse inside modules, or else risk EXPLODING the visualization
+        if class_name == 'module':
+          return
+    else:
+      superclass_names = [e.__name__ for e in dat.__bases__ if e is not object]
+      new_obj.extend(['CLASS', get_name(dat), superclass_names])
+
+    # traverse inside of its __dict__ to grab attributes
+    # (filter out useless-seeming ones, based on anecdotal observation):
+    hidden = ('__doc__', '__module__', '__return__', '__dict__',
+        '__locals__', '__weakref__', '__qualname__')
+    if hasattr(dat, '__dict__'):
+      user_attrs = sorted([e for e in dat.__dict__ if e not in hidden])
+    else:
+      user_attrs = []
+
+    for attr in user_attrs:
+      new_obj.append([self.encode(attr, None), self.encode(dat.__dict__[attr], None)])
+
diff --git a/v3/pg_logger.py b/v3/pg_logger.py
new file mode 100644
index 000000000..359aedb4e
--- /dev/null
+++ b/v3/pg_logger.py
@@ -0,0 +1,1441 @@
+# Online Python Tutor
+# https://github.com/pgbovine/OnlinePythonTutor/
+#
+# Copyright (C) Philip J. Guo (philip@pgbovine.net)
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# This is the meat of the Online Python Tutor back-end.  It implements a
+# full logger for Python program execution (based on pdb, the standard
+# Python debugger imported via the bdb module), printing out the values
+# of all in-scope data structures after each executed instruction.
+
+
+
+import sys
+import bdb # the KEY import here!
+import re
+import traceback
+import types
+
+# TODO: use the 'six' package to smooth out Py2 and Py3 differences
+is_python3 = (sys.version_info[0] == 3)
+
+# NB: don't use cStringIO since it doesn't support unicode!!!
+if is_python3:
+  import io as StringIO
+  import io # expose regular io for Python3 users too
+else:
+  import StringIO
+import pg_encoder
+
+
+# TODO: not threadsafe:
+
+# upper-bound on the number of executed lines, in order to guard against
+# infinite loops
+MAX_EXECUTED_LINES = 300
+
+#DEBUG = False
+DEBUG = True
+
+BREAKPOINT_STR = '#break'
+
+CLASS_RE = re.compile('class\s+')
+
+
+# simple sandboxing scheme:
+#
+# - use resource.setrlimit to deprive this process of ANY file descriptors
+#   (which will cause file read/write and subprocess shell launches to fail)
+# - restrict user builtins and module imports
+#   (beware that this is NOT foolproof at all ... there are known flaws!)
+#
+# ALWAYS use defense-in-depth and don't just rely on these simple mechanisms
+try:
+  import resource
+  resource_module_loaded = True
+except ImportError:
+  # Google App Engine doesn't seem to have the 'resource' module
+  resource_module_loaded = False
+
+
+# From http://coreygoldberg.blogspot.com/2009/05/python-redirect-or-turn-off-stdout-and.html
+class NullDevice():
+    def write(self, s):
+        pass
+
+
+# These could lead to XSS or other code injection attacks, so be careful:
+__html__ = None
+def setHTML(htmlStr):
+  global __html__
+  __html__ = htmlStr
+
+__css__ = None
+def setCSS(cssStr):
+  global __css__
+  __css__ = cssStr
+
+__js__ = None
+def setJS(jsStr):
+  global __js__
+  __js__ = jsStr
+
+
+# ugh, I can't figure out why in Python 2, __builtins__ seems to
+# be a dict, but in Python 3, __builtins__ seems to be a module,
+# so just handle both cases ... UGLY!
+if type(__builtins__) is dict:
+  BUILTIN_IMPORT = __builtins__['__import__']
+else:
+  assert type(__builtins__) is types.ModuleType
+  BUILTIN_IMPORT = __builtins__.__import__
+
+
+# whitelist of module imports
+ALLOWED_STDLIB_MODULE_IMPORTS = ('math', 'random', 'datetime',
+                          'functools', 'itertools', 'operator', 'string',
+                          'collections', 're', 'json',
+                          'heapq', 'bisect')
+
+# allow users to import but don't explicitly import it since it's
+# already been done above
+OTHER_STDLIB_WHITELIST = ('StringIO', 'io')
+
+# whitelist of custom modules to import into OPT
+# (TODO: support modules in a subdirectory, but there are various
+# logistical problems with doing so that I can't overcome at the moment,
+# especially getting setHTML, setCSS, and setJS to work in the imported
+# modules.)
+CUSTOM_MODULE_IMPORTS = ('callback_module',
+                         'ttt_module',
+                         'html_module',
+                         'htmlexample_module',
+# ignore these troublesome imports for now
+#                         'watch_module',   # 'import sys' might be troublesome
+#                         'bintree_module',
+#                         'GChartWrapper',
+                         'matrix',
+                         'htmlFrame')
+
+
+# PREEMPTIVELY import all of these modules, so that when the user's
+# script imports them, it won't try to do a file read (since they've
+# already been imported and cached in memory). Remember that when
+# the user's code runs, resource.setrlimit(resource.RLIMIT_NOFILE, (0, 0))
+# will already be in effect, so no more files can be opened.
+#
+# NB: All modules in CUSTOM_MODULE_IMPORTS will be imported, warts and
+# all, so they better work on Python 2 and 3!
+for m in ALLOWED_STDLIB_MODULE_IMPORTS + CUSTOM_MODULE_IMPORTS:
+  __import__(m)
+
+
+# Restrict imports to a whitelist
+def __restricted_import__(*args):
+  # filter args to ONLY take in real strings so that someone can't
+  # subclass str and bypass the 'in' test on the next line
+  args = [e for e in args if type(e) is str]
+
+  if args[0] in ALLOWED_STDLIB_MODULE_IMPORTS + CUSTOM_MODULE_IMPORTS + OTHER_STDLIB_WHITELIST:
+    imported_mod = BUILTIN_IMPORT(*args)
+
+    if args[0] in CUSTOM_MODULE_IMPORTS:
+      # add special magical functions to custom imported modules
+      setattr(imported_mod, 'setHTML', setHTML)
+      setattr(imported_mod, 'setCSS', setCSS)
+      setattr(imported_mod, 'setJS', setJS)
+
+    # somewhat weak protection against imported modules that contain one
+    # of these troublesome builtins. again, NOTHING is foolproof ...
+    # just more defense in depth :)
+    for mod in ('os', 'sys', 'posix', 'gc'):
+      if hasattr(imported_mod, mod):
+        delattr(imported_mod, mod)
+
+    return imported_mod
+  else:
+    raise ImportError('{0} not supported'.format(args[0]))
+
+
+# Support interactive user input by:
+#
+# 1. running the entire program up to a call to raw_input (or input in py3),
+# 2. bailing and returning a trace ending in a special 'raw_input' event,
+# 3. letting the web frontend issue a prompt to the user to grab a string,
+# 4. RE-RUNNING the whole program with that string added to input_string_queue,
+# 5. which should bring execution to the next raw_input call (if
+#    available), or to termination.
+# Repeat until no more raw_input calls are encountered.
+# Note that this is mad inefficient, but is simple to implement!
+
+# VERY IMPORTANT -- set random seed to 0 to ensure deterministic execution:
+import random
+random.seed(0)
+
+# queue of input strings passed from either raw_input or mouse_input
+input_string_queue = []
+
+
+def open_wrapper(*args):
+  if is_python3:
+      raise Exception('''open() is not supported.
+Instead use io.StringIO() to simulate a file.
+Here is an example: http://goo.gl/uNvBGl''')
+  else:
+      raise Exception('''open() is not supported.
+Instead use StringIO.StringIO() to simulate a file.
+Here is an example: http://goo.gl/Q9xQ4p''')
+
+
+class RawInputException(Exception):
+  pass
+
+def raw_input_wrapper(prompt=''):
+  if input_string_queue:
+    input_str = input_string_queue.pop(0)
+
+    # write the prompt and user input to stdout, to emulate what happens
+    # at the terminal
+    sys.stdout.write(str(prompt)) # always convert prompt into a string
+    sys.stdout.write(input_str + "\n") # newline to simulate the user hitting Enter
+    return input_str
+  raise RawInputException(str(prompt)) # always convert prompt into a string
+
+class MouseInputException(Exception):
+  pass
+
+def mouse_input_wrapper(prompt=''):
+  if input_string_queue:
+    return input_string_queue.pop(0)
+  raise MouseInputException(prompt)
+
+
+
+# blacklist of builtins
+BANNED_BUILTINS = ['reload', 'open', 'compile',
+                   'file', 'eval', 'exec', 'execfile',
+                   'exit', 'quit', 'help',
+                   'dir', 'globals', 'locals', 'vars']
+# Peter says 'apply' isn't dangerous, so don't ban it
+
+# ban input() in Python 2 since it does an eval!
+# (Python 3 input is Python 2 raw_input, so we're okay)
+if not is_python3:
+  BANNED_BUILTINS.append('input')
+
+
+IGNORE_VARS = set(('__user_stdout__', '__OPT_toplevel__', '__builtins__', '__name__', '__exception__', '__doc__', '__package__'))
+
+def get_user_stdout(frame):
+  my_user_stdout = frame.f_globals['__user_stdout__']
+
+  # This is SUPER KRAZY! In Python 2, the buflist inside of a StringIO
+  # instance can be made up of both str and unicode, so we need to convert
+  # the str to unicode and replace invalid characters with the Unicode '?'
+  # But leave unicode elements alone. This way, EVERYTHING inside buflist
+  # will be unicode. (Note that in Python 3, everything is already unicode,
+  # so we're fine.)
+  if not is_python3:
+    my_user_stdout.buflist = [(e.decode('utf-8', 'replace')
+                               if type(e) is str
+                               else e)
+                              for e in my_user_stdout.buflist]
+  return my_user_stdout.getvalue()
+
+
+'''
+2013-12-26
+
+Okay, what's with this f_valuestack business?
+
+If you compile your own CPython and patch Objects/frameobject.c to add a
+Python accessor for f_valuestack, then you can actually access the value
+stack, which is useful for, say, grabbbing the objects within
+list/set/dict comprehensions as they're being built. e.g., try:
+
+    z = [x*y for x in range(5) for y in range(5)]
+
+Note that on pythontutor.com, I am currently running custom-compiled
+versions of Python-2.7.6 and Python-3.3.3 with this f_valuestack hack.
+Unless you run your own custom CPython, you won't get these benefits.
+
+
+Patch:
+
+ static PyObject *
+ frame_getlineno(PyFrameObject *f, void *closure)
+ {
+     return PyLong_FromLong(PyFrame_GetLineNumber(f));
+ }
+
++// copied from Py2crazy, which was for Python 2, but let's hope this still works!
++static PyObject *
++frame_getvaluestack(PyFrameObject* f) {
++    // pgbovine - TODO: will this memory leak? hopefully not,
++    // since all other accessors seem to follow the same idiom
++    PyObject* lst = PyList_New(0);
++    if (f->f_stacktop != NULL) {
++        PyObject** p = NULL;
++        for (p = f->f_valuestack; p < f->f_stacktop; p++) {
++            PyList_Append(lst, *p);
++        }
++    }
++
++    return lst;
++}
++
+ /* Setter for f_lineno - you can set f_lineno from within a trace function in
+  * order to jump to a given line of code, subject to some restrictions.  Most
+  * lines are OK to jump to because they don't make any assumptions about the
+@@ -368,6 +384,11 @@
+
+ static PyGetSetDef frame_getsetlist[] = {
+     {"f_locals",        (getter)frame_getlocals, NULL, NULL},
+     {"f_lineno",        (getter)frame_getlineno,
+                     (setter)frame_setlineno, NULL},
+     {"f_trace",         (getter)frame_gettrace, (setter)frame_settrace, NULL},
++
++    // pgbovine
++    {"f_valuestack",(getter)frame_getvaluestack,
++                    (setter)NULL /* don't let it be set */, NULL},
++
+     {0}
+ };
+'''
+
+# at_global_scope should be true only if 'frame' represents the global scope
+def get_user_globals(frame, at_global_scope=False):
+  d = filter_var_dict(frame.f_globals)
+
+  # don't blurt out all of f_valuestack for now ...
+  '''
+  if at_global_scope and hasattr(frame, 'f_valuestack'):
+    for (i, e) in enumerate(frame.f_valuestack):
+      d['_tmp' + str(i+1)] = e
+  '''
+
+  # print out list objects being built up in Python 2.x list comprehensions
+  # (which don't have its own special <listcomp> frame, sadly)
+  if not is_python3 and hasattr(frame, 'f_valuestack'):
+    for (i, e) in enumerate([e for e in frame.f_valuestack if type(e) is list]):
+      d['_tmp' + str(i+1)] = e
+
+  # also filter out __return__ for globals only, but NOT for locals
+  if '__return__' in d:
+    del d['__return__']
+  return d
+
+def get_user_locals(frame):
+  ret = filter_var_dict(frame.f_locals)
+  # don't blurt out all of f_valuestack for now ...
+  '''
+  if hasattr(frame, 'f_valuestack'):
+    for (i, e) in enumerate(frame.f_valuestack):
+      ret['_tmp' + str(i+1)] = e
+  '''
+
+  # special printing of list/set/dict comprehension objects as they are
+  # being built up incrementally ...
+  f_name = frame.f_code.co_name
+  if hasattr(frame, 'f_valuestack'):
+    # print out list objects being built up in Python 2.x list comprehensions
+    # (which don't have its own special <listcomp> frame, sadly)
+    if not is_python3:
+      for (i, e) in enumerate([e for e in frame.f_valuestack
+                               if type(e) is list]):
+        ret['_tmp' + str(i+1)] = e
+
+    # for dict and set comprehensions, which have their own frames:
+    if f_name.endswith('comp>'):
+      for (i, e) in enumerate([e for e in frame.f_valuestack
+                               if type(e) in (list, set, dict)]):
+        ret['_tmp' + str(i+1)] = e
+
+  return ret
+
+def filter_var_dict(d):
+  ret = {}
+  for (k,v) in d.items():
+    if k not in IGNORE_VARS:
+      ret[k] = v
+  return ret
+
+
+# yield all function objects locally-reachable from frame,
+# making sure to traverse inside all compound objects ...
+def visit_all_locally_reachable_function_objs(frame):
+  for (k, v) in get_user_locals(frame).items():
+    for e in visit_function_obj(v, set()):
+      if e: # only non-null if it's a function object
+        assert type(e) in (types.FunctionType, types.MethodType)
+        yield e
+
+
+# TODO: this might be slow if we're traversing inside lots of objects:
+def visit_function_obj(v, ids_seen_set):
+  v_id = id(v)
+
+  # to prevent infinite loop
+  if v_id in ids_seen_set:
+    yield None
+  else:
+    ids_seen_set.add(v_id)
+
+    typ = type(v)
+    
+    # simple base case
+    if typ in (types.FunctionType, types.MethodType):
+      yield v
+
+    # recursive cases
+    elif typ in (list, tuple, set):
+      for child in v:
+        for child_res in visit_function_obj(child, ids_seen_set):
+          yield child_res
+
+    elif typ == dict or pg_encoder.is_class(v) or pg_encoder.is_instance(v):
+      contents_dict = None
+
+      if typ == dict:
+        contents_dict = v
+      # warning: some classes or instances don't have __dict__ attributes
+      elif hasattr(v, '__dict__'):
+        contents_dict = v.__dict__
+
+      if contents_dict:
+        for (key_child, val_child) in contents_dict.items():
+          for key_child_res in visit_function_obj(key_child, ids_seen_set):
+            yield key_child_res
+          for val_child_res in visit_function_obj(val_child, ids_seen_set):
+            yield val_child_res
+
+    # degenerate base case
+    yield None
+
+
+class PGLogger(bdb.Bdb):
+
+    def __init__(self, cumulative_mode, heap_primitives, show_only_outputs, finalizer_func,
+                 disable_security_checks=False, crazy_mode=False):
+        bdb.Bdb.__init__(self)
+        self.mainpyfile = ''
+        self._wait_for_mainpyfile = 0
+
+        self.disable_security_checks = disable_security_checks
+
+        # if True, then displays ALL stack frames that have ever existed
+        # rather than only those currently on the stack (and their
+        # lexical parents)
+        self.cumulative_mode = cumulative_mode
+
+        # if True, then render certain primitive objects as heap objects
+        self.render_heap_primitives = heap_primitives
+
+        # if True, then don't render any data structures in the trace,
+        # and show only outputs
+        self.show_only_outputs = show_only_outputs
+
+        # Run using the custom Py2crazy Python interpreter
+        self.crazy_mode = crazy_mode
+
+        # a function that takes the output trace as a parameter and
+        # processes it
+        self.finalizer_func = finalizer_func
+
+        # each entry contains a dict with the information for a single
+        # executed line
+        self.trace = []
+
+        # if this is true, don't put any more stuff into self.trace
+        self.done = False
+
+        # if this is non-null, don't do any more tracing until a
+        # 'return' instruction with a stack gotten from
+        # get_stack_code_IDs() that matches wait_for_return_stack
+        self.wait_for_return_stack = None
+
+        #http://stackoverflow.com/questions/2112396/in-python-in-google-app-engine-how-do-you-capture-output-produced-by-the-print
+        self.GAE_STDOUT = sys.stdout
+
+        # Key:   function object
+        # Value: parent frame
+        self.closures = {}
+
+        # set of function objects that were defined in the global scope
+        self.globally_defined_funcs = set()
+
+        # Key: frame object
+        # Value: monotonically increasing small ID, based on call order
+        self.frame_ordered_ids = {}
+        self.cur_frame_id = 1
+
+        # List of frames to KEEP AROUND after the function exits.
+        # If cumulative_mode is True, then keep ALL frames in
+        # zombie_frames; otherwise keep only frames where
+        # nested functions were defined within them.
+        self.zombie_frames = []
+
+        # set of elements within zombie_frames that are also
+        # LEXICAL PARENTS of other frames
+        self.parent_frames_set = set()
+
+        # all globals that ever appeared in the program, in the order in
+        # which they appeared. note that this might be a superset of all
+        # the globals that exist at any particular execution point,
+        # since globals might have been deleted (using, say, 'del')
+        self.all_globals_in_order = []
+
+        # very important for this single object to persist throughout
+        # execution, or else canonical small IDs won't be consistent.
+        self.encoder = pg_encoder.ObjectEncoder(self.render_heap_primitives)
+
+        self.executed_script = None # Python script to be executed!
+
+        # if there is at least one line that ends with BREAKPOINT_STR,
+        # then activate "breakpoint mode", where execution should stop
+        # ONLY at breakpoint lines.
+        self.breakpoints = []
+
+        self.prev_lineno = -1 # keep track of previous line just executed
+
+
+    def get_frame_id(self, cur_frame):
+      return self.frame_ordered_ids[cur_frame]
+
+    # Returns the (lexical) parent of a function value.
+    def get_parent_of_function(self, val):
+      if val not in self.closures:
+        return None
+      return self.get_frame_id(self.closures[val])
+
+
+    # Returns the (lexical) parent frame of the function that was called
+    # to create the stack frame 'frame'.
+    #
+    # OKAY, this is a SUPER hack, but I don't see a way around it
+    # since it's impossible to tell exactly which function
+    # ('closure') object was called to create 'frame'.
+    #
+    # The Python interpreter doesn't maintain this information,
+    # so unless we hack the interpreter, we will simply have
+    # to make an educated guess based on the contents of local
+    # variables inherited from possible parent frame candidates.
+    def get_parent_frame(self, frame):
+      for (func_obj, parent_frame) in self.closures.items():
+        # ok, there's a possible match, but let's compare the
+        # local variables in parent_frame to those of frame
+        # to make sure. this is a hack that happens to work because in
+        # Python, each stack frame inherits ('inlines') a copy of the
+        # variables from its (lexical) parent frame.
+        if func_obj.__code__ == frame.f_code:
+          all_matched = True
+          for k in frame.f_locals:
+            # Do not try to match local names
+            if k in frame.f_code.co_varnames:
+              continue
+            if k != '__return__' and k in parent_frame.f_locals:
+              if parent_frame.f_locals[k] != frame.f_locals[k]:
+                all_matched = False
+                break
+
+          if all_matched:
+            return parent_frame
+
+      return None
+
+
+    def lookup_zombie_frame_by_id(self, frame_id):
+      # TODO: kinda inefficient
+      for e in self.zombie_frames:
+        if self.get_frame_id(e) == frame_id:
+          return e
+      assert False # should never get here
+
+
+    # unused ...
+    #def reset(self):
+    #    bdb.Bdb.reset(self)
+    #    self.forget()
+
+
+    def forget(self):
+        self.lineno = None
+        self.stack = []
+        self.curindex = 0
+        self.curframe = None
+
+    def setup(self, f, t):
+        self.forget()
+        self.stack, self.curindex = self.get_stack(f, t)
+        self.curframe = self.stack[self.curindex][0]
+
+    # should be a reasonably unique ID to match calls and returns:
+    def get_stack_code_IDs(self):
+        return [id(e[0].f_code) for e in self.stack]
+
+
+    # Override Bdb methods
+
+    def user_call(self, frame, argument_list):
+        """This method is called when there is the remote possibility
+        that we ever need to stop in this function."""
+        # TODO: figure out a way to move this down to 'def interaction'
+        # or right before self.trace.append ...
+        if self.done: return
+
+        if self._wait_for_mainpyfile:
+            return
+        if self.stop_here(frame):
+            # delete __return__ so that on subsequent calls to
+            # a generator function, the OLD yielded (returned)
+            # value gets deleted from the frame ...
+            try:
+              del frame.f_locals['__return__']
+            except KeyError:
+              pass
+
+            self.interaction(frame, None, 'call')
+
+    def user_line(self, frame):
+        """This function is called when we stop or break at this line."""
+        if self.done: return
+
+        if self._wait_for_mainpyfile:
+            if (self.canonic(frame.f_code.co_filename) != "<string>" or
+                frame.f_lineno <= 0):
+                return
+            self._wait_for_mainpyfile = 0
+        self.interaction(frame, None, 'step_line')
+
+    def user_return(self, frame, return_value):
+        """This function is called when a return trap is set here."""
+        if self.done: return
+
+        frame.f_locals['__return__'] = return_value
+        self.interaction(frame, None, 'return')
+
+    def user_exception(self, frame, exc_info):
+        """This function is called if an exception occurs,
+        but only if we are to stop at or just below this level."""
+        if self.done: return
+
+        exc_type, exc_value, exc_traceback = exc_info
+        frame.f_locals['__exception__'] = exc_type, exc_value
+        if type(exc_type) == type(''):
+            exc_type_name = exc_type
+        else: exc_type_name = exc_type.__name__
+
+        if exc_type_name == 'RawInputException':
+          raw_input_arg = str(exc_value.args[0]) # make sure it's a string so it's JSON serializable!
+          self.trace.append(dict(event='raw_input', prompt=raw_input_arg))
+          self.done = True
+        elif exc_type_name == 'MouseInputException':
+          mouse_input_arg = str(exc_value.args[0]) # make sure it's a string so it's JSON serializable!
+          self.trace.append(dict(event='mouse_input', prompt=mouse_input_arg))
+          self.done = True
+        else:
+          self.interaction(frame, exc_traceback, 'exception')
+
+    def get_script_line(self, n):
+        return self.executed_script_lines[n-1]
+
+    # General interaction function
+
+    def interaction(self, frame, traceback, event_type):
+        self.setup(frame, traceback)
+        tos = self.stack[self.curindex]
+        top_frame = tos[0]
+        lineno = tos[1]
+
+
+        # debug ...
+        '''
+        print >> sys.stderr
+        print >> sys.stderr, '=== STACK ===', 'curindex:', self.curindex
+        for (e,ln) in self.stack:
+          print >> sys.stderr, e.f_code.co_name + ' ' + e.f_code.co_filename + ' ' + str(ln)
+        print >> sys.stderr, "top_frame", top_frame.f_code.co_name
+        '''
+
+
+        # don't trace inside of ANY functions that aren't user-written code
+        # (e.g., those from imported modules -- e.g., random, re -- or the
+        # __restricted_import__ function in this file)
+        #
+        # empirically, it seems like the FIRST entry in self.stack is
+        # the 'run' function from bdb.py, but everything else on the
+        # stack is the user program's "real stack"
+
+        # Look only at the "topmost" frame on the stack ...
+
+        # it seems like user-written code has a filename of '<string>',
+        # but maybe there are false positives too?
+        if self.canonic(top_frame.f_code.co_filename) != '<string>':
+          return
+        # also don't trace inside of the magic "constructor" code
+        if top_frame.f_code.co_name == '__new__':
+          return
+        # or __repr__, which is often called when running print statements
+        if top_frame.f_code.co_name == '__repr__':
+          return
+
+        # if top_frame.f_globals doesn't contain the sentinel '__OPT_toplevel__',
+        # then we're in another global scope altogether, so skip it!
+        # (this comes up in tests/backend-tests/namedtuple.txt)
+        if '__OPT_toplevel__' not in top_frame.f_globals:
+          return
+
+
+        # OLD CODE -- bail if any element on the stack matches these conditions
+        # note that the old code passes tests/backend-tests/namedtuple.txt
+        # but the new code above doesn't :/
+        '''
+        for (cur_frame, cur_line) in self.stack[1:]:
+          # it seems like user-written code has a filename of '<string>',
+          # but maybe there are false positives too?
+          if self.canonic(cur_frame.f_code.co_filename) != '<string>':
+            return
+          # also don't trace inside of the magic "constructor" code
+          if cur_frame.f_code.co_name == '__new__':
+            return
+          # or __repr__, which is often called when running print statements
+          if cur_frame.f_code.co_name == '__repr__':
+            return
+        '''
+
+
+        # don't trace if wait_for_return_stack is non-null ...
+        if self.wait_for_return_stack:
+          if event_type == 'return' and \
+             (self.wait_for_return_stack == self.get_stack_code_IDs()):
+            self.wait_for_return_stack = None # reset!
+          return # always bail!
+        else:
+          # Skip all "calls" that are actually class definitions, since
+          # those faux calls produce lots of ugly cruft in the trace.
+          #
+          # NB: Only trigger on calls to functions defined in
+          # user-written code (i.e., co_filename == '<string>'), but that
+          # should already be ensured by the above check for whether we're
+          # in user-written code.
+          if event_type == 'call':
+            func_line = self.get_script_line(top_frame.f_code.co_firstlineno)
+            if CLASS_RE.match(func_line.lstrip()): # ignore leading spaces
+              self.wait_for_return_stack = self.get_stack_code_IDs()
+              return
+
+
+        self.encoder.reset_heap() # VERY VERY VERY IMPORTANT,
+                                  # or else we won't properly capture heap object mutations in the trace!
+
+        if event_type == 'call':
+          # Don't be so strict about this assertion because it FAILS
+          # when you're calling a generator (not for the first time),
+          # since that frame has already previously been on the stack ...
+          #assert top_frame not in self.frame_ordered_ids
+
+          self.frame_ordered_ids[top_frame] = self.cur_frame_id
+          self.cur_frame_id += 1
+
+          if self.cumulative_mode:
+            self.zombie_frames.append(top_frame)
+
+
+        # only render zombie frames that are NO LONGER on the stack
+        #
+        # subtle: self.stack[:self.curindex+1] is the real stack, since
+        # everything after self.curindex+1 is beyond the top of the
+        # stack. this seems to be relevant only when there's an exception,
+        # since the ENTIRE stack is preserved but self.curindex
+        # starts decrementing as the exception bubbles up the stack.
+        cur_stack_frames = [e[0] for e in self.stack[:self.curindex+1]]
+        zombie_frames_to_render = [e for e in self.zombie_frames if e not in cur_stack_frames]
+
+
+        # each element is a pair of (function name, ENCODED locals dict)
+        encoded_stack_locals = []
+
+
+        # returns a dict with keys: function name, frame id, id of parent frame, encoded_locals dict
+        def create_encoded_stack_entry(cur_frame):
+          ret = {}
+
+
+          parent_frame_id_list = []
+
+          f = cur_frame
+          while True:
+            p = self.get_parent_frame(f)
+            if p:
+              pid = self.get_frame_id(p)
+              assert pid
+              parent_frame_id_list.append(pid)
+              f = p
+            else:
+              break
+
+
+          cur_name = cur_frame.f_code.co_name
+
+          if cur_name == '':
+            cur_name = 'unnamed function'
+
+          # augment lambdas with line number
+          if cur_name == '<lambda>':
+            cur_name += pg_encoder.create_lambda_line_number(cur_frame.f_code,
+                                                             self.encoder.line_to_lambda_code)
+
+          # encode in a JSON-friendly format now, in order to prevent ill
+          # effects of aliasing later down the line ...
+          encoded_locals = {}
+
+          for (k, v) in get_user_locals(cur_frame).items():
+            is_in_parent_frame = False
+
+            # don't display locals that appear in your parents' stack frames,
+            # since that's redundant
+            for pid in parent_frame_id_list:
+              parent_frame = self.lookup_zombie_frame_by_id(pid)
+              if k in parent_frame.f_locals:
+                # ignore __return__, which is never copied
+                if k != '__return__':
+                  # these values SHOULD BE ALIASES
+                  # (don't do an 'is' check since it might not fire for primitives)
+                  if parent_frame.f_locals[k] == v:
+                      is_in_parent_frame = True
+
+            if is_in_parent_frame and k not in cur_frame.f_code.co_varnames:
+              continue
+
+            # don't display some built-in locals ...
+            if k == '__module__':
+              continue
+
+            encoded_val = self.encoder.encode(v, self.get_parent_of_function)
+            encoded_locals[k] = encoded_val
+
+
+          # order the variable names in a sensible way:
+
+          # Let's start with co_varnames, since it (often) contains all
+          # variables in this frame, some of which might not exist yet.
+          ordered_varnames = []
+          for e in cur_frame.f_code.co_varnames:
+            if e in encoded_locals:
+              ordered_varnames.append(e)
+
+          # sometimes co_varnames doesn't contain all of the true local
+          # variables: e.g., when executing a 'class' definition.  in that
+          # case, iterate over encoded_locals and push them onto the end
+          # of ordered_varnames in alphabetical order
+          for e in sorted(encoded_locals.keys()):
+            if e != '__return__' and e not in ordered_varnames:
+              ordered_varnames.append(e)
+
+          # finally, put __return__ at the very end
+          if '__return__' in encoded_locals:
+            ordered_varnames.append('__return__')
+
+          # doctor Python 3 initializer to look like a normal function (denero)
+          if '__locals__' in encoded_locals:
+            ordered_varnames.remove('__locals__')
+            local = encoded_locals.pop('__locals__')
+            if encoded_locals.get('__return__', True) is None:
+              encoded_locals['__return__'] = local
+
+          # crucial sanity checks!
+          assert len(ordered_varnames) == len(encoded_locals)
+          for e in ordered_varnames:
+            assert e in encoded_locals
+
+          return dict(func_name=cur_name,
+                      is_parent=(cur_frame in self.parent_frames_set),
+                      frame_id=self.get_frame_id(cur_frame),
+                      parent_frame_id_list=parent_frame_id_list,
+                      encoded_locals=encoded_locals,
+                      ordered_varnames=ordered_varnames)
+
+
+        i = self.curindex
+
+        # look for whether a nested function has been defined during
+        # this particular call:
+        if i > 1: # i == 1 implies that there's only a global scope visible
+          for v in visit_all_locally_reachable_function_objs(top_frame):
+            if (v not in self.closures and \
+                v not in self.globally_defined_funcs):
+
+              # Look for the presence of the code object (v.func_code
+              # for Python 2 or v.__code__ for Python 3) in the
+              # constant pool (f_code.co_consts) of an enclosing
+              # stack frame, and set that frame as your parent.
+              #
+              # This technique properly handles lambdas passed as
+              # function parameters. e.g., this example:
+              #
+              # def foo(x):
+              #   bar(lambda y: x + y)
+              # def bar(a):
+              #   print a(20)
+              # foo(10)
+              chosen_parent_frame = None
+              # SUPER hacky but seems to work -- use reversed(self.stack)
+              # because we want to traverse starting from the TOP of the stack
+              # (most recent frame) and find the first frame containing
+              # a constant code object that matches v.__code__ or v.func_code
+              #
+              # required for this example from Berkeley CS61a:
+              #
+              # def f(p, k):
+              #     def g():
+              #         print(k)
+              #     if k == 0:
+              #         f(g, 1)
+              # f(None, 0)
+              #
+              # there are two calls to f, each of which defines a
+              # closure g that should point to the respective frame.
+              #
+              # note that for the second call to f, the parent of the
+              # g defined in there should be that frame, which is at
+              # the TOP of the stack. this reversed() hack does the
+              # right thing. note that if you don't traverse the stack
+              # backwards, then you will mistakenly get the parent as
+              # the FIRST f frame (bottom of the stack).
+              for (my_frame, my_lineno) in reversed(self.stack):
+                if chosen_parent_frame:
+                  break
+
+                for frame_const in my_frame.f_code.co_consts:
+                  if frame_const is (v.__code__ if is_python3 else v.func_code):
+                    chosen_parent_frame = my_frame
+                    break
+
+              # 2013-12-01 commented out this line so tests/backend-tests/papajohn-monster.txt
+              # works without an assertion failure ...
+              #assert chosen_parent_frame # I hope this always passes :0
+
+              # this condition should be False for functions declared in global scope ...
+              if chosen_parent_frame in self.frame_ordered_ids:
+                self.closures[v] = chosen_parent_frame
+                self.parent_frames_set.add(chosen_parent_frame) # unequivocally add to this set!!!
+                if not chosen_parent_frame in self.zombie_frames:
+                  self.zombie_frames.append(chosen_parent_frame)
+        else:
+          # if there is only a global scope visible ...
+          for (k, v) in get_user_globals(top_frame).items():
+            if (type(v) in (types.FunctionType, types.MethodType) and \
+                v not in self.closures):
+              self.globally_defined_funcs.add(v)
+
+
+        # climb up until you find '<module>', which is (hopefully) the global scope
+        while True:
+          cur_frame = self.stack[i][0]
+          cur_name = cur_frame.f_code.co_name
+          if cur_name == '<module>':
+            break
+
+          # do this check because in some cases, certain frames on the
+          # stack might NOT be tracked, so don't push a stack entry for
+          # those frames. this happens when you have a callback function
+          # in an imported module. e.g., your code:
+          #     def foo():
+          #         bar(baz)
+          #
+          #     def baz(): pass
+          #
+          # imported module code:
+          #     def bar(callback_func):
+          #         callback_func()
+          #
+          # when baz is executing, the real stack is [foo, bar, baz] but
+          # bar is in imported module code, so pg_logger doesn't trace
+          # it, and it doesn't show up in frame_ordered_ids. thus, the
+          # stack to render should only be [foo, baz].
+          if cur_frame in self.frame_ordered_ids:
+            encoded_stack_locals.append(create_encoded_stack_entry(cur_frame))
+          i -= 1
+
+        zombie_encoded_stack_locals = [create_encoded_stack_entry(e) for e in zombie_frames_to_render]
+
+
+        # encode in a JSON-friendly format now, in order to prevent ill
+        # effects of aliasing later down the line ...
+        encoded_globals = {}
+        for (k, v) in get_user_globals(tos[0], at_global_scope=(self.curindex <= 1)).items():
+          encoded_val = self.encoder.encode(v, self.get_parent_of_function)
+          encoded_globals[k] = encoded_val
+
+          if k not in self.all_globals_in_order:
+            self.all_globals_in_order.append(k)
+
+        # filter out globals that don't exist at this execution point
+        # (because they've been, say, deleted with 'del')
+        ordered_globals = [e for e in self.all_globals_in_order if e in encoded_globals]
+        assert len(ordered_globals) == len(encoded_globals)
+
+
+        # merge zombie_encoded_stack_locals and encoded_stack_locals
+        # into one master ordered list using some simple rules for
+        # making it look aesthetically pretty
+        stack_to_render = [];
+
+        # first push all regular stack entries
+        if encoded_stack_locals:
+          for e in encoded_stack_locals:
+            e['is_zombie'] = False
+            e['is_highlighted'] = False
+            stack_to_render.append(e)
+
+          # highlight the top-most active stack entry
+          stack_to_render[0]['is_highlighted'] = True
+
+
+        # now push all zombie stack entries
+        for e in zombie_encoded_stack_locals:
+          # don't display return value for zombie frames
+          # TODO: reconsider ...
+          '''
+          try:
+            e['ordered_varnames'].remove('__return__')
+          except ValueError:
+            pass
+          '''
+
+          e['is_zombie'] = True
+          e['is_highlighted'] = False # never highlight zombie entries
+
+          stack_to_render.append(e)
+
+        # now sort by frame_id since that sorts frames in "chronological
+        # order" based on the order they were invoked
+        stack_to_render.sort(key=lambda e: e['frame_id'])
+
+
+
+        # create a unique hash for this stack entry, so that the
+        # frontend can uniquely identify it when doing incremental
+        # rendering. the strategy is to use a frankenstein-like mix of the
+        # relevant fields to properly disambiguate closures and recursive
+        # calls to the same function
+        for e in stack_to_render:
+          hash_str = e['func_name']
+          # frame_id is UNIQUE, so it can disambiguate recursive calls
+          hash_str += '_f' + str(e['frame_id'])
+
+          # needed to refresh GUI display ...
+          if e['is_parent']:
+            hash_str += '_p'
+
+          # TODO: this is no longer needed, right? (since frame_id is unique)
+          #if e['parent_frame_id_list']:
+          #  hash_str += '_p' + '_'.join([str(i) for i in e['parent_frame_id_list']])
+          if e['is_zombie']:
+            hash_str += '_z'
+
+          e['unique_hash'] = hash_str
+
+
+        if self.show_only_outputs:
+          trace_entry = dict(line=lineno,
+                             event=event_type,
+                             func_name=tos[0].f_code.co_name,
+                             globals={},
+                             ordered_globals=[],
+                             stack_to_render=[],
+                             heap={},
+                             stdout=get_user_stdout(tos[0]))
+        else:
+          trace_entry = dict(line=lineno,
+                             event=event_type,
+                             func_name=tos[0].f_code.co_name,
+                             globals=encoded_globals,
+                             ordered_globals=ordered_globals,
+                             stack_to_render=stack_to_render,
+                             heap=self.encoder.get_heap(),
+                             stdout=get_user_stdout(tos[0]))
+
+        # optional column numbers for greater precision
+        # (only relevant in Py2crazy, a hacked CPython that supports column numbers)
+        if self.crazy_mode:
+          # at the very least, grab the column number
+          trace_entry['column'] = frame.f_colno
+
+          # now try to find start_col and extent
+          # (-1 is an invalid instruction index)
+          if frame.f_lasti >= 0:
+            key = (frame.f_code.co_code, frame.f_lineno, frame.f_colno,frame.f_lasti)
+            if key in self.bytecode_map:
+              v = self.bytecode_map[key]
+              trace_entry['expr_start_col'] = v.start_col
+              trace_entry['expr_width'] = v.extent
+              trace_entry['opcode'] = v.opcode
+
+
+        # TODO: refactor into a non-global
+        global __html__, __css__, __js__
+        if __html__:
+          trace_entry['html_output'] = __html__
+        if __css__:
+          trace_entry['css_output'] = __css__
+        if __js__:
+          trace_entry['js_output'] = __js__
+
+        # if there's an exception, then record its info:
+        if event_type == 'exception':
+          # always check in f_locals
+          exc = frame.f_locals['__exception__']
+          trace_entry['exception_msg'] = exc[0].__name__ + ': ' + str(exc[1])
+
+
+        # append to the trace only the breakpoint line and the next
+        # executed line, so that if you set only ONE breakpoint, OPT shows
+        # the state before and after that line gets executed.
+        append_to_trace = True
+        if self.breakpoints:
+          if not ((lineno in self.breakpoints) or (self.prev_lineno in self.breakpoints)):
+            append_to_trace = False
+
+          # TRICKY -- however, if there's an exception, then ALWAYS
+          # append it to the trace, so that the error can be displayed
+          if event_type == 'exception':
+            append_to_trace = True
+
+        self.prev_lineno = lineno
+
+        if append_to_trace:
+          self.trace.append(trace_entry)
+
+
+        # sanity check to make sure the state of the world at a 'call' instruction
+        # is identical to that at the instruction immediately following it ...
+        '''
+        if len(self.trace) > 1:
+          cur = self.trace[-1]
+          prev = self.trace[-2]
+          if prev['event'] == 'call':
+            assert cur['globals'] == prev['globals']
+            for (s1, s2) in zip(cur['stack_to_render'], prev['stack_to_render']):
+              assert s1 == s2
+            assert cur['heap'] == prev['heap']
+            assert cur['stdout'] == prev['stdout']
+        '''
+
+
+        if len(self.trace) >= MAX_EXECUTED_LINES:
+          self.trace.append(dict(event='instruction_limit_reached', exception_msg='(stopped after ' + str(MAX_EXECUTED_LINES) + ' steps to prevent possible infinite loop)'))
+          self.force_terminate()
+
+        self.forget()
+
+
+    def _runscript(self, script_str, custom_globals=None):
+        self.executed_script = script_str
+        self.executed_script_lines = self.executed_script.splitlines()
+
+        for (i, line) in enumerate(self.executed_script_lines):
+          line_no = i + 1
+          if line.endswith(BREAKPOINT_STR):
+            self.breakpoints.append(line_no)
+
+
+        # populate an extent map to get more accurate ranges from code
+        if self.crazy_mode:
+            # in Py2crazy standard library as Python-2.7.5/Lib/super_dis.py
+            import super_dis
+            try:
+                self.bytecode_map = super_dis.get_bytecode_map(self.executed_script)
+            except:
+                # failure oblivious
+                self.bytecode_map = {}
+
+
+        # When bdb sets tracing, a number of call and line events happens
+        # BEFORE debugger even reaches user's code (and the exact sequence of
+        # events depends on python version). So we take special measures to
+        # avoid stopping before we reach the main script (see user_line and
+        # user_call for details).
+        self._wait_for_mainpyfile = 1
+
+
+        # ok, let's try to sorta 'sandbox' the user script by not
+        # allowing certain potentially dangerous operations.
+        user_builtins = {}
+
+        # ugh, I can't figure out why in Python 2, __builtins__ seems to
+        # be a dict, but in Python 3, __builtins__ seems to be a module,
+        # so just handle both cases ... UGLY!
+        if type(__builtins__) is dict:
+          builtin_items = __builtins__.items()
+        else:
+          assert type(__builtins__) is types.ModuleType
+          builtin_items = []
+          for k in dir(__builtins__):
+            builtin_items.append((k, getattr(__builtins__, k)))
+
+        for (k, v) in builtin_items:
+          if k == 'open': # put this before BANNED_BUILTINS
+            user_builtins[k] = open_wrapper
+          elif k in BANNED_BUILTINS:
+            continue
+          elif k == '__import__':
+            user_builtins[k] = __restricted_import__
+          else:
+            if k == 'raw_input':
+              user_builtins[k] = raw_input_wrapper
+            elif k == 'input' and is_python3:
+              # Python 3 input() is Python 2 raw_input()
+              user_builtins[k] = raw_input_wrapper
+            else:
+              user_builtins[k] = v
+
+        user_builtins['mouse_input'] = mouse_input_wrapper
+
+        # TODO: we can disable these imports here, but a crafty user can
+        # always get a hold of them by importing one of the external
+        # modules, so there's no point in trying security by obscurity
+        user_builtins['setHTML'] = setHTML
+        user_builtins['setCSS'] = setCSS
+        user_builtins['setJS'] = setJS
+
+        user_stdout = StringIO.StringIO()
+
+        sys.stdout = user_stdout
+
+        self.ORIGINAL_STDERR = sys.stderr
+
+        # don't do this, or else certain kinds of errors, such as syntax
+        # errors, will be silently ignored. WEIRD!
+        #sys.stderr = NullDevice # silence errors
+
+        user_globals = {"__name__"    : "__main__",
+                        "__builtins__" : user_builtins,
+                        "__user_stdout__" : user_stdout,
+                        # sentinel value for frames deriving from a top-level module
+                        "__OPT_toplevel__": True}
+
+        if custom_globals:
+            user_globals.update(custom_globals)
+
+        try:
+          # enforce resource limits RIGHT BEFORE running script_str
+
+          # set ~200MB virtual memory limit AND a 5-second CPU time
+          # limit (tuned for Webfaction shared hosting) to protect against
+          # memory bombs such as:
+          #   x = 2
+          #   while True: x = x*x
+          if resource_module_loaded and (not self.disable_security_checks):
+            resource.setrlimit(resource.RLIMIT_AS, (200000000, 200000000))
+            resource.setrlimit(resource.RLIMIT_CPU, (5, 5))
+
+            # protect against unauthorized filesystem accesses ...
+            resource.setrlimit(resource.RLIMIT_NOFILE, (0, 0)) # no opened files allowed
+
+            # VERY WEIRD. If you activate this resource limitation, it
+            # ends up generating an EMPTY trace for the following program:
+            #   "x = 0\nfor i in range(10):\n  x += 1\n   print x\n  x += 1\n"
+            # (at least on my Webfaction hosting with Python 2.7)
+            #resource.setrlimit(resource.RLIMIT_FSIZE, (0, 0))  # (redundancy for paranoia)
+
+            # The posix module is a built-in and has a ton of OS access
+            # facilities ... if you delete those functions from
+            # sys.modules['posix'], it seems like they're gone EVEN IF
+            # someone else imports posix in a roundabout way. Of course,
+            # I don't know how foolproof this scheme is, though.
+            # (It's not sufficient to just "del sys.modules['posix']";
+            #  it can just be reimported without accessing an external
+            #  file and tripping RLIMIT_NOFILE, since the posix module
+            #  is baked into the python executable, ergh. Actually DON'T
+            #  "del sys.modules['posix']", since re-importing it will
+            #  refresh all of the attributes. ergh^2)
+            for a in dir(sys.modules['posix']):
+              delattr(sys.modules['posix'], a)
+            # do the same with os
+            for a in dir(sys.modules['os']):
+              # 'path' is needed for __restricted_import__ to work
+              # and 'stat' is needed for some errors to be reported properly
+              if a not in ('path', 'stat'):
+                delattr(sys.modules['os'], a)
+            # ppl can dig up trashed objects with gc.get_objects()
+            import gc
+            for a in dir(sys.modules['gc']):
+              delattr(sys.modules['gc'], a)
+            del sys.modules['gc']
+
+            # sys.modules contains an in-memory cache of already-loaded
+            # modules, so if you delete modules from here, they will
+            # need to be re-loaded from the filesystem.
+            #
+            # Thus, as an extra precaution, remove these modules so that
+            # they can't be re-imported without opening a new file,
+            # which is disallowed by resource.RLIMIT_NOFILE
+            #
+            # Of course, this isn't a foolproof solution by any means,
+            # and it might lead to UNEXPECTED FAILURES later in execution.
+            del sys.modules['os']
+            del sys.modules['os.path']
+            del sys.modules['sys']
+
+          self.run(script_str, user_globals, user_globals)
+        # sys.exit ...
+        except SystemExit:
+          #sys.exit(0)
+          raise bdb.BdbQuit
+        except:
+          if DEBUG:
+            traceback.print_exc()
+
+          trace_entry = dict(event='uncaught_exception')
+
+          (exc_type, exc_val, exc_tb) = sys.exc_info()
+          if hasattr(exc_val, 'lineno'):
+            trace_entry['line'] = exc_val.lineno
+          if hasattr(exc_val, 'offset'):
+            trace_entry['offset'] = exc_val.offset
+
+          trace_entry['exception_msg'] = type(exc_val).__name__ + ": " +  str(exc_val)
+
+          # SUPER SUBTLE! if ANY exception has already been recorded by
+          # the program, then DON'T record it again as an uncaught_exception.
+          # This looks kinda weird since the exact exception message doesn't
+          # need to match up, but in practice, there should be at most only
+          # ONE exception per trace.
+          already_caught = False
+          for e in self.trace:
+            if e['event'] == 'exception':
+              already_caught = True
+              break
+
+          if not already_caught:
+            if not self.done:
+              self.trace.append(trace_entry)
+
+          raise bdb.BdbQuit # need to forceably STOP execution
+
+
+    def force_terminate(self):
+      #self.finalize()
+      raise bdb.BdbQuit # need to forceably STOP execution
+
+
+    def finalize(self):
+      sys.stdout = self.GAE_STDOUT # very important!
+      sys.stderr = self.ORIGINAL_STDERR
+
+      assert len(self.trace) <= (MAX_EXECUTED_LINES + 1)
+
+      # don't do this anymore ...
+      '''
+      # filter all entries after 'return' from '<module>', since they
+      # seem extraneous:
+      res = []
+      for e in self.trace:
+        res.append(e)
+        if e['event'] == 'return' and e['func_name'] == '<module>':
+          break
+      '''
+
+      res = self.trace
+
+      # if the SECOND to last entry is an 'exception'
+      # and the last entry is return from <module>, then axe the last
+      # entry, for aesthetic reasons :)
+      if len(res) >= 2 and \
+         res[-2]['event'] == 'exception' and \
+         res[-1]['event'] == 'return' and res[-1]['func_name'] == '<module>':
+        res.pop()
+
+      self.trace = res
+
+      return self.finalizer_func(self.executed_script, self.trace)
+
+
+import json
+
+# the MAIN meaty function!!!
+def exec_script_str(script_str, raw_input_lst_json, options_json, finalizer_func):
+  options = json.loads(options_json)
+
+  py_crazy_mode = ('py_crazy_mode' in options and options['py_crazy_mode'])
+
+  logger = PGLogger(options['cumulative_mode'], options['heap_primitives'], options['show_only_outputs'], finalizer_func,
+                    crazy_mode=py_crazy_mode)
+
+  # TODO: refactor these NOT to be globals
+  global input_string_queue
+  input_string_queue = []
+  if raw_input_lst_json:
+    # TODO: if we want to support unicode, remove str() cast
+    input_string_queue = [str(e) for e in json.loads(raw_input_lst_json)]
+
+  global __html__, __css__, __js__
+  __html__, __css__, __js__ = None, None, None
+
+  try:
+    logger._runscript(script_str)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    logger.finalize()
+
+
+# disables security check and returns the result of finalizer_func
+# WARNING: ONLY RUN THIS LOCALLY and never over the web, since
+# security checks are disabled
+def exec_script_str_local(script_str, raw_input_lst_json, cumulative_mode, heap_primitives, finalizer_func):
+  # TODO: add py_crazy_mode option here too ...
+  logger = PGLogger(cumulative_mode, heap_primitives, False, finalizer_func, disable_security_checks=True)
+
+  # TODO: refactor these NOT to be globals
+  global input_string_queue
+  input_string_queue = []
+  if raw_input_lst_json:
+    # TODO: if we want to support unicode, remove str() cast
+    input_string_queue = [str(e) for e in json.loads(raw_input_lst_json)]
+
+  global __html__, __css__, __js__
+  __html__, __css__, __js__ = None, None, None
+
+  try:
+    logger._runscript(script_str)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    return logger.finalize()
+
+
+def exec_str_with_user_ns(script_str, user_ns, finalizer_func):
+  logger = PGLogger(False, False, False, finalizer_func, disable_security_checks=True)
+
+  global __html__, __css__, __js__
+  __html__, __css__, __js__ = None, None, None
+
+  try:
+    logger._runscript(script_str, user_ns)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    return logger.finalize()
+
diff --git a/v3/pythontutor.py b/v3/pythontutor.py
new file mode 100644
index 000000000..f2a3e2b3a
--- /dev/null
+++ b/v3/pythontutor.py
@@ -0,0 +1,91 @@
+# Online Python Tutor
+# https://github.com/pgbovine/OnlinePythonTutor/
+# 
+# Copyright (C) Philip J. Guo (philip@pgbovine.net)
+# 
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+# 
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+# 
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# Google App Engine backend
+
+
+# TODO: if we want to enable concurrent requests, then make sure this is threadsafe (e.g., no mutable globals)
+# then add this string to app.yaml: 'threadsafe: true'
+
+import webapp2
+import pg_logger
+import json
+import jinja2, os
+import sys
+
+
+# TODO: this croaks for some reason ...
+TEST_STR = "import os\nos.chdir('/')"
+
+
+JINJA_ENVIRONMENT = jinja2.Environment(loader=jinja2.FileSystemLoader(os.path.dirname(__file__)))
+
+
+class TutorPage(webapp2.RequestHandler):
+
+  def get(self):
+    self.response.headers['Content-Type'] = 'text/html'
+    template = JINJA_ENVIRONMENT.get_template('visualize.html')
+    self.response.out.write(template.render())
+
+
+class IframeEmbedPage(webapp2.RequestHandler):
+  def get(self):
+    self.response.headers['Content-Type'] = 'text/html'
+    template = JINJA_ENVIRONMENT.get_template('iframe-embed.html')
+    self.response.out.write(template.render())
+
+
+class LessonPage(webapp2.RequestHandler):
+
+  def get(self):
+    self.response.headers['Content-Type'] = 'text/html'
+    template = JINJA_ENVIRONMENT.get_template('lesson.html')
+    self.response.out.write(template.render())
+
+
+class ExecScript(webapp2.RequestHandler):
+
+  def json_finalizer(self, input_code, output_trace):
+    ret = dict(code=input_code, trace=output_trace)
+    json_output = json.dumps(ret, indent=None) # use indent=None for most compact repr
+    self.response.out.write(json_output)
+
+  def get(self):
+    self.response.headers['Content-Type'] = 'application/json'
+    self.response.headers['Cache-Control'] = 'no-cache'
+
+    pg_logger.exec_script_str(self.request.get('user_script'),
+                              self.request.get('raw_input_json'),
+                              self.request.get('options_json'),
+                              self.json_finalizer)
+
+
+app = webapp2.WSGIApplication([('/', TutorPage),
+                               ('/iframe-embed.html', IframeEmbedPage),
+                               ('/lesson.html', LessonPage),
+                               ('/exec', ExecScript)],
+                              debug=True)
+
diff --git a/v3/red-sad-face.jpg b/v3/red-sad-face.jpg
new file mode 100644
index 000000000..034eaacda
Binary files /dev/null and b/v3/red-sad-face.jpg differ
diff --git a/v3/ruby-example-code/blocks-basic.rb b/v3/ruby-example-code/blocks-basic.rb
new file mode 100644
index 000000000..ee44cc136
--- /dev/null
+++ b/v3/ruby-example-code/blocks-basic.rb
@@ -0,0 +1,19 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+def gimme
+  if block_given?
+    yield
+  else
+    print "Oops, no block."
+  end
+  puts " You're welcome."
+end
+
+gimme { print "Thank you." }
+
+gimme do
+  localX = "Thank you again."
+  print localX
+end
+
+gimme # no block
diff --git a/v3/ruby-example-code/blocks-scoping-2.rb b/v3/ruby-example-code/blocks-scoping-2.rb
new file mode 100644
index 000000000..751ea88c2
--- /dev/null
+++ b/v3/ruby-example-code/blocks-scoping-2.rb
@@ -0,0 +1,16 @@
+# how does lexical scoping work for blocks?
+
+x = 5
+
+def gimme
+  y = 10
+  yield
+  puts "You're welcome."
+end
+
+gimme do
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts y # can't find y since this is lexically scoped
+end
diff --git a/v3/ruby-example-code/blocks-scoping-3.rb b/v3/ruby-example-code/blocks-scoping-3.rb
new file mode 100644
index 000000000..bbcee07a6
--- /dev/null
+++ b/v3/ruby-example-code/blocks-scoping-3.rb
@@ -0,0 +1,23 @@
+# how does lexical scoping work for blocks?
+
+x = 5
+
+def gimme
+  yield
+  puts "end of gimme"
+end
+
+def bar
+  y = 42
+  gimme do
+    # everything inside of here can access y but *not* x
+    puts 'Hello'
+    puts y
+    y += 1000
+    puts y
+  end
+  puts 'end of bar'
+  puts y
+end
+
+bar
diff --git a/v3/ruby-example-code/class-inheritance.rb b/v3/ruby-example-code/class-inheritance.rb
new file mode 100644
index 000000000..a3babc385
--- /dev/null
+++ b/v3/ruby-example-code/class-inheritance.rb
@@ -0,0 +1,25 @@
+# adapted from http://rubylearning.com/satishtalim/ruby_inheritance.html
+class Mammal  
+  def breathe  
+    puts "inhale and exhale"  
+  end  
+end  
+  
+class Cat < Mammal  
+  def speak  
+    puts "Meow"  
+  end  
+end  
+
+class Tabby < Cat
+  def speak
+    puts "Tabby meow"
+  end
+end
+  
+rani = Cat.new  
+rani.breathe  
+rani.speak
+
+tab = Tabby.new
+tab.speak
diff --git a/v3/ruby-example-code/class-private-protected.rb b/v3/ruby-example-code/class-private-protected.rb
new file mode 100644
index 000000000..a46706484
--- /dev/null
+++ b/v3/ruby-example-code/class-private-protected.rb
@@ -0,0 +1,30 @@
+class MyClass
+  def foo; end # instance method
+  def self.foo; end # class method
+
+  protected
+
+  def bar; end
+  def self.bar; end # NOP!
+
+  # variables shouldn't be affected
+  @@classVarX = 111
+  @instVarX = 222
+  
+  private
+
+  @@classVarY = 333
+  @instVarY = 444
+  
+  def baz; end
+  def self.baz; end # NOP!
+
+  # dynamically change visibility
+  public :baz
+  private :bar
+  private :foo
+
+  private_class_method :foo
+  private_class_method :bar
+  private_class_method :baz
+end
diff --git a/v3/ruby-example-code/constants-4.rb b/v3/ruby-example-code/constants-4.rb
new file mode 100644
index 000000000..cb5bc883f
--- /dev/null
+++ b/v3/ruby-example-code/constants-4.rb
@@ -0,0 +1,15 @@
+# adapted from http://rubylearning.com/satishtalim/ruby_constants.html
+
+OUTER_CONST = 99  
+  
+class Const  
+    def get_const  
+      CONST  
+    end  
+    CONST = OUTER_CONST + 1  
+end  
+  
+puts Const.new.get_const  
+puts Const::CONST  
+puts ::OUTER_CONST  
+puts Const::NEW_CONST = 123  
diff --git a/v3/ruby-example-code/container-data-types.rb b/v3/ruby-example-code/container-data-types.rb
new file mode 100644
index 000000000..c5018a3a9
--- /dev/null
+++ b/v3/ruby-example-code/container-data-types.rb
@@ -0,0 +1,8 @@
+require 'set'
+
+my_array = [1, 2, 3, 'hello', false, true, nil]
+my_hash = {'John' => 26, 'Jane' => 21, 'Jack' => 30}
+my_set = my_array.to_set
+
+my_hash['nested array'] = my_array
+my_array[1] = ['a', 'b', 'c']
diff --git a/v3/ruby-example-code/globals.rb b/v3/ruby-example-code/globals.rb
new file mode 100644
index 000000000..440124018
--- /dev/null
+++ b/v3/ruby-example-code/globals.rb
@@ -0,0 +1,13 @@
+$globalX = 'I am a global!'
+$globalY = 'I am another global!'
+
+localX = 'I am a local in <main>'
+
+def foo
+  reallyLocalX = 'I am a local in foo'
+  puts reallyLocalX
+  $globalX << $globalY
+end
+
+$globalX << '---'
+foo
diff --git a/v3/ruby-example-code/inst-class-vars-complex.rb b/v3/ruby-example-code/inst-class-vars-complex.rb
new file mode 100644
index 000000000..4f3e856a0
--- /dev/null
+++ b/v3/ruby-example-code/inst-class-vars-complex.rb
@@ -0,0 +1,36 @@
+# adapted from http://rubylearning.com/satishtalim/ruby_constants.html
+
+# p057mymethods2.rb  
+# variables and methods start lowercase  
+$glob = 5             # global variables start with $  
+class TestVar         # class name constant, start uppercase  
+ @@cla = 6            # class variables start with @@  
+ CONST_VAL = 7        # constant style, all caps, underscore  
+ def initialize(x)    # constructor  
+  @inst = x           # instance variables start with @  
+  @@cla += 1          # each object shares @@cla  
+ end  
+ def self.cla         # class method, getter  
+  @@cla  
+ end  
+ def self.cla=(y)     # class method, setter, also TestVar.  
+  @@cla = y  
+ end  
+ def inst             # instance method, getter  
+  @inst  
+ end  
+ def inst=(i)         # instance method, setter  
+  @inst = i  
+ end  
+end  
+puts $glob  
+test = TestVar.new(3) # calls constructor  
+puts TestVar.cla      # calls getter  
+puts test.inspect     # gives object ID and instance vars  
+TestVar.cla = 4       # calls setter  
+test.inst=8           # calls setter  
+puts TestVar.cla  
+puts test.inst        # calls getter  
+other = TestVar.new(17)  
+puts other.inspect  
+puts TestVar.cla  
diff --git a/v3/ruby-example-code/lambda-scoping-2.rb b/v3/ruby-example-code/lambda-scoping-2.rb
new file mode 100644
index 000000000..85feb8f85
--- /dev/null
+++ b/v3/ruby-example-code/lambda-scoping-2.rb
@@ -0,0 +1,24 @@
+# how does lexical scoping work for lambdas?
+
+x = 5
+
+p = lambda {
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts 'end of p'
+}
+
+def gimme
+  x = 10
+  print 'In gimme, x is '
+  puts x
+  yield
+  puts "You're welcome."
+  print 'In gimme, x is '
+  puts x
+end
+
+gimme &p # use '&' to turn a lambda into a block
+print 'In main, x is '
+puts x
diff --git a/v3/ruby-example-code/megagreeter.rb b/v3/ruby-example-code/megagreeter.rb
new file mode 100644
index 000000000..d553835f0
--- /dev/null
+++ b/v3/ruby-example-code/megagreeter.rb
@@ -0,0 +1,42 @@
+# Adapted from Ruby in Twenty Minutes
+# https://www.ruby-lang.org/en/documentation/quickstart/3/
+
+class MegaGreeter
+  attr_accessor :names
+
+  # Create the object
+  def initialize(names = "World")
+    @names = names
+  end
+
+  # Say hi to everybody
+  def say_hi
+    if @names.nil?
+      puts "..."
+    elsif @names.respond_to?("each")
+      # @names is a list of some kind, iterate!
+      @names.each do |name|
+        puts "Hello #{name}!"
+      end
+    else
+      puts "Hello #{@names}!"
+    end
+  end
+end
+
+
+mg = MegaGreeter.new
+mg.say_hi
+
+# Change name to be "Zeke"
+mg.names = "Zeke"
+mg.say_hi
+
+# Change the name to an array of names
+mg.names = ["Albert", "Brenda", "Charles",
+  "Dave", "Engelbert"]
+mg.say_hi
+
+# Change to nil
+mg.names = nil
+mg.say_hi
diff --git a/v3/ruby-example-code/proc-basic.rb b/v3/ruby-example-code/proc-basic.rb
new file mode 100644
index 000000000..073439b04
--- /dev/null
+++ b/v3/ruby-example-code/proc-basic.rb
@@ -0,0 +1,17 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+count = Proc.new {
+  [1,2,3,4,5].each {
+    |i| print i
+  }
+  puts
+}
+
+your_proc = lambda { puts "Lurch: 'You rang?'" }
+my_proc = proc { puts "Morticia: 'Who was at the door, Lurch?'" }
+
+puts count.class, your_proc.class, my_proc.class
+
+count.call
+your_proc.call
+my_proc.call
diff --git a/v3/ruby-example-code/proc-return.rb b/v3/ruby-example-code/proc-return.rb
new file mode 100644
index 000000000..e42c99b96
--- /dev/null
+++ b/v3/ruby-example-code/proc-return.rb
@@ -0,0 +1,11 @@
+# adapted from http://eli.thegreenplace.net/2006/04/18/understanding-ruby-blocks-procs-and-methods/
+
+def gen_times(factor)
+    return Proc.new {|n| n*factor }
+end
+
+times3 = gen_times(3)
+times5 = gen_times(5)
+
+puts times3.call(12)               #=> 36
+puts times5.call(5)                #=> 25
diff --git a/v3/ruby-example-code/proc-scoping.rb b/v3/ruby-example-code/proc-scoping.rb
new file mode 100644
index 000000000..080238cde
--- /dev/null
+++ b/v3/ruby-example-code/proc-scoping.rb
@@ -0,0 +1,13 @@
+# how does lexical scoping work for Procs?
+
+x = 5
+
+p = Proc.new do
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts 'end of p'
+end
+
+p.call
+puts x
diff --git a/v3/ruby-example-code/symbols.rb b/v3/ruby-example-code/symbols.rb
new file mode 100644
index 000000000..d7711471c
--- /dev/null
+++ b/v3/ruby-example-code/symbols.rb
@@ -0,0 +1,11 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+name = "Matz"
+name = name.to_sym
+name2 = :Matz.id2name
+puts name
+puts name2
+
+x = :"Matz with spaces and !?!"
+x2 = :"Matz with spaces and !?!"
+puts x.object_id == x2.object_id
diff --git a/v3/ruby-example-code/toplevel-inst-class-vars.rb b/v3/ruby-example-code/toplevel-inst-class-vars.rb
new file mode 100644
index 000000000..655d276e2
--- /dev/null
+++ b/v3/ruby-example-code/toplevel-inst-class-vars.rb
@@ -0,0 +1,10 @@
+@x = 42
+@y = 'hello'
+puts @x
+puts @y
+@@classX = 'classy X'
+@@classY = 'classy Y'
+puts @@classX
+puts @@classY
+localX = 'local X'
+localY = 'local Y'
diff --git a/v3/ruby.html b/v3/ruby.html
new file mode 100644
index 000000000..2c42900ce
--- /dev/null
+++ b/v3/ruby.html
@@ -0,0 +1,366 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Ruby Tutor - Visualize Ruby code execution to learn Ruby online</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<link type="text/css" href="css/jquery.ui.chatbox.css" rel="stylesheet" />
+<script type="text/javascript" src="js/jquery.ui.chatbox.js"></script>
+
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/holistic.js"></script>
+<link rel="stylesheet" href="css/holistic.css"/>
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-frontend.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+<script type="text/javascript" src="js/socket.io-client/socket.io.js"></script>
+
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<script type="text/javascript">
+
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-34795707-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
+
+</head>
+
+<body>
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+
+<!--
+
+<div id="adInfo" style="font-size: 8pt; width: 180px; margin-bottom: 15px;">
+
+<a href="#" id="hideHeaderLink">Hide banner ad</a>
+
+<br/><br/>
+This tool is free and <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">open-source</a>.
+Ads pay for web hosting costs.
+
+-->
+
+</div>
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 7pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div>
+<button id="getTutorBtn" type="button" class="togetherjsBtn" style="display: none;">
+Get help from a tutor
+</button>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+<td valign="top">
+
+<div id="togetherjsStatus"></div>
+
+<div id="surveyHeader"></div>
+
+<div id="adHeader" style="margin-left: 15px; margin-bottom: 35px;">
+
+<div id="optHeader" style="font-family: Georgia, Palatino, Times, serif; font-size: 13pt; margin-bottom: 10px;">
+Ruby Tutor - Visualize Ruby code execution to learn Ruby online
+
+<p style="font-size: 10pt";>
+(also visualize
+<a href="visualize.html#py=2">Python</a>,
+<a href="java.html">Java</a>,
+<a href="javascript.html">JavaScript</a>,
+<a href="typescript.html">TypeScript</a>,
+<a href="ruby.html">Ruby</a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html">C</a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++</a>
+code)
+</p>
+
+</div>
+
+<!--
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<ins class="adsbygoogle"
+     style="display:inline-block;width:728px;height:90px"
+     data-ad-client="ca-pub-7519401450079227"
+     data-ad-slot="9796201192"></ins>
+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
+</script>
+-->
+
+</div>
+
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write Ruby code here:
+
+  <select id="pythonVersionSelector" style="display: none;">
+    <option value="ruby">Ruby</option>
+  </select>
+
+</div>
+
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+
+<div id="javaOptionsPane" style="margin-top: 20px;">
+[<i>coming soon!</i>] Java options: pass in command-line arguments and feed user input to stdin
+</div>
+
+
+<div id="optionsPane" style="margin-top: 18px; line-height: 150%; display: none;">
+  <select id="cumulativeModeSelector" style="display: none;">
+    <option value="false">hide exited frames [default]</option>
+  </select>
+  <select id="heapPrimitivesSelector" style="display: none;">
+    <option value="false">inline primitives &amp; nested objects [default]</option>
+  </select>
+  <select id="textualMemoryLabelsSelector" style="display: none;">
+    <option value="false">draw pointers as arrows [default]</option>
+  </select>
+
+  <!-- hide these for now -->
+  <select id="drawParentPointerSelector" style="display: none;">
+    <option value="false">hide environment parent pointers (default)</option>
+    <!--<option value="true">show environment parent pointers</option>-->
+  </select>
+  <select id="showOnlyOutputsSelector" style="display: none;">
+    <option value="false">show everything (default)</option>
+    <!--<option value="true">show only outputs</option>-->
+  </select>
+</div>
+
+
+<p style="margin-top: 25px;"><a href="#" id="createTestsLink">Create test cases</a></p>
+
+<div id="testCasesPane"></div>
+
+<p style="margin-top: 25px; font-weight: bold;">Ruby Examples</p>
+
+<p style="margin-top: 5px;">
+  <a class="exampleLink" id="rubyContainersLink" href="#">Containers</a> |
+  <a class="exampleLink" id="rubyGlobalsLink" href="#">Globals</a> |
+  <a class="exampleLink" id="rubyConstantsLink" href="#">Constants</a> |
+  <a class="exampleLink" id="rubyBlocksLink" href="#">Blocks</a> |
+  <a class="exampleLink" id="rubyBlocksScopingLink" href="#">Block scoping</a> |
+  <a class="exampleLink" id="rubyBlocksScoping3Link" href="#">More block scoping</a>
+  <p/>
+  <a class="exampleLink" id="rubyProcLink" href="#">Proc & Lambda</a> |
+  <a class="exampleLink" id="rubyProcScopingLink" href="#">Proc scoping</a> |
+  <a class="exampleLink" id="rubyProcReturnLink" href="#">Proc return</a> |
+  <a class="exampleLink" id="rubyLambdaScopingLink" href="#">Lambda scoping</a> |
+  <a class="exampleLink" id="rubyInheritanceLink" href="#">Inheritance</a> |
+  <a class="exampleLink" id="rubySymbolsLink" href="#">Symbols</a>
+  <p/>
+  <a class="exampleLink" id="rubyPrivateProtectedLink" href="#">Protected & private</a> |
+  <a class="exampleLink" id="rubyInstClassVarsComplexLink" href="#">Class & instance vars</a> |
+  <a class="exampleLink" id="rubyToplevelLink" href="#">Toplevel defs</a> |
+  <a class="exampleLink" id="rubyMegagreeterLink" href="#">Megagreeter</a>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<div id="embedLinkDiv">
+<p>
+  <button id="genEmbedBtn" class="smallBtn" type="button">Generate embed code</button> <input type="text" id="embedCodeOutput" size="70"/>
+</p>
+
+<p>To embed this visualization in your webpage, click the 'Generate
+embed code' button above and paste the resulting HTML code into your
+webpage. Adjust the height and width parameters and
+change the link to <b>https://</b> if needed.</p>
+</div>
+
+<p style="margin-top: 25px;">
+
+This tool runs Ruby 2 using MRI 2.2.2. <a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi/backends/ruby">Backend
+source code</a>.</p>
+
+<p style="margin-top: 30px;">Privacy Policy: By using Online Python
+Tutor, your visualized code, options, user interactions, text chats, and
+IP address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, the Online Python Tutor website (pythontutor.com) does
+not collect any personal information or session state from users, nor
+does it issue any cookies.</p>
+
+<!--
+
+<p>
+
+Third party vendors, including Google, use cookies to serve ads based on a
+user's prior visits to pythontutor.com. Google's use of the DoubleClick cookie
+enables it and its partners to serve ads to your users based on their visit to
+pythontutor.com and/or other sites on the Internet. Users may opt out of the use
+of the DoubleClick cookie by visiting Ads Settings. (Alternatively, users may
+opt out of a third-party vendor's use of cookies for interest based advertising
+by visiting <a href="http://www.aboutads.info/">aboutads.info</a>.) Some of our
+advertising partners may use cookies and web beacons on our site. Our
+advertising partners include Google Adsense. These third-party ad servers or ad
+networks use technology to the advertisements and links that appear on
+pythontutor.com send directly to your browsers. They automatically receive your
+IP address when this occurs. Other technologies (such as cookies, JavaScript,
+or Web Beacons) may also be used by the third-party ad networks to measure the
+effectiveness of their advertisements and / or to personalize the advertising
+content that you see.
+
+pythontutor.com has no access to or control over these cookies that are used by
+third-party advertisers. Consult the respective privacy policies of these
+third-party ad servers for more detailed information on their practices as well
+as for instructions about how to opt-out of certain practices. pythontutor.com's
+privacy policy does not apply to, and we cannot control the activities of, such
+other advertisers or web sites. If you wish to disable cookies, you may do so
+through your individual browser options.
+
+</p>
+
+-->
+
+<!--
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+-->
+
+<p style="margin-top: 25px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<div id="chat_div"></div>
+
+</body>
+</html>
diff --git a/v3/screenshot-renderer/README.md b/v3/screenshot-renderer/README.md
new file mode 100644
index 000000000..f867a4711
--- /dev/null
+++ b/v3/screenshot-renderer/README.md
@@ -0,0 +1,27 @@
+# Render static screenshots of Online Python Tutor visualizations
+
+Nov 2013: I've written a [script](render-opt-screenshots.js) that uses
+[PhantomJS](http://phantomjs.org/) to create screenshots of Online Python Tutor
+data structure visualizations as `.png` files.
+These files can be included in a textbook or online tutorial.
+
+To run this script, first [install PhantomJS](http://phantomjs.org/download.html) and then run:
+
+    phantomjs render-opt-screenshots.js test.py
+
+Doing so will pass `test.py` to Online Python Tutor (which requires online connectivity)
+and render the state at each step `i` as a file named `test.py.step.<i>.png`.
+
+This example run generates 23 files, since there are 23 total execution steps. Here are some example files.
+
+Step 11 (`sample-screenshots/test.py.step.11.png`):
+
+![Step 11](sample-screenshots/test.py.step.11.png)
+
+Step 12 (`sample-screenshots/test.py.step.12.png`)
+
+![Step 12](sample-screenshots/test.py.step.12.png)
+
+Step 13 (`sample-screenshots/test.py.step.13.png`)
+
+![Step 13](sample-screenshots/test.py.step.13.png)
diff --git a/v3/screenshot-renderer/render-opt-screenshots.js b/v3/screenshot-renderer/render-opt-screenshots.js
new file mode 100644
index 000000000..ba28ce1dc
--- /dev/null
+++ b/v3/screenshot-renderer/render-opt-screenshots.js
@@ -0,0 +1,90 @@
+// Uses PhantomJS (phantomjs.org) to call Online Python Tutor to
+// visualize and render screenshots of a Python file as .png images
+
+// Created by Philip Guo on 2013-11-23
+
+// TODO: experiment with PDF rendering by calling page.render() with a
+// .pdf file extension. We might need to mess around with viewport and
+// page sizes.
+
+var DEBUG = true;
+
+var page = require('webpage').create();
+var system = require('system');
+var fs = require('fs');
+
+if (system.args.length < 2) {
+  console.log('\nUsage:');
+  console.log('phantomjs render-opt-screenshots.js <filename> [custom server name] [custom HTML file] [custom option string]');
+  console.log('\nVisualizes execution of a Python file at pythontutor.com and renders');
+  console.log('the state diagram at each step i as <filename>.step.$i.png');
+  phantom.exit(1);
+}
+
+var fn = system.args[1];
+var basename = fn.split(/[\\/]/).pop();
+
+var server, html, option_str;
+if (system.args.length == 2) {
+  // default options
+  server = 'www.pythontutor.com';
+  html = 'visualize.html';
+  option_str = 'cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&py=2';
+}
+else {
+  server = system.args[2];
+  html = system.args[3]
+  option_str = system.args[4];
+  if (!option_str) {
+    option_str = ''; // to make string concatenation work properly
+  }
+}
+
+var pythonScript = fs.open(fn, 'r').read();
+
+if (DEBUG) {
+  console.log('Visualizing ...\n');
+  console.log(pythonScript);
+  console.log('--- please wait ---');
+}
+
+var scriptEncoded = encodeURIComponent(pythonScript);
+
+// construct a URL with the script and options:
+var url = 'http://' + server + '/' + html + '#code=' + scriptEncoded +
+          '&mode=display&showOnlyOutputs=false&' + option_str;
+
+page.open(url, function () {
+    // impose a slight delay to make sure the page loads completely before working
+    window.setTimeout(function () {
+
+      // hide extraneous components and resize
+      page.evaluate(function() {
+          $("#experimentalHeader").hide();
+          $("#footer").hide();
+          $("#vizLayoutTdFirst").hide();
+          $('#pyOutputPane').width($('table.visualizer').width());
+      });
+
+      // grab maximum instruction from the page itself
+      var maxInstr = page.evaluate(function() {
+          return myVisualizer.curTrace.length - 1;
+      });
+
+      // ignore step 0 since there's nothing interesting to render there
+      for (var i=1; i <= maxInstr; i++) {
+          page.evaluate(function(i) {
+              myVisualizer.curInstr = i;
+              myVisualizer.updateOutput();
+          }, i /* pass i in here */);
+          var outfn = basename + '.step.' + (i+1) + '.png';
+          page.render(outfn);
+          if (DEBUG) {
+            console.log('Rendered step ' + (i+1) + ' / ' + (maxInstr+1), '\t' + outfn);
+          }
+      }
+
+      phantom.exit()
+
+    }, 1000);
+});
diff --git a/v3/screenshot-renderer/sample-screenshots/test.py.step.11.png b/v3/screenshot-renderer/sample-screenshots/test.py.step.11.png
new file mode 100644
index 000000000..cfeccf35b
Binary files /dev/null and b/v3/screenshot-renderer/sample-screenshots/test.py.step.11.png differ
diff --git a/v3/screenshot-renderer/sample-screenshots/test.py.step.12.png b/v3/screenshot-renderer/sample-screenshots/test.py.step.12.png
new file mode 100644
index 000000000..658fb0759
Binary files /dev/null and b/v3/screenshot-renderer/sample-screenshots/test.py.step.12.png differ
diff --git a/v3/screenshot-renderer/sample-screenshots/test.py.step.13.png b/v3/screenshot-renderer/sample-screenshots/test.py.step.13.png
new file mode 100644
index 000000000..d6df58cc4
Binary files /dev/null and b/v3/screenshot-renderer/sample-screenshots/test.py.step.13.png differ
diff --git a/v3/screenshot-renderer/test.py b/v3/screenshot-renderer/test.py
new file mode 100644
index 000000000..9098319c1
--- /dev/null
+++ b/v3/screenshot-renderer/test.py
@@ -0,0 +1,23 @@
+x = [1, 2, 3]
+y = [4, 5, 6]
+z = y
+y = x
+x = z
+
+x = [1, 2, 3] # a different [1, 2, 3] list!
+y = x
+x.append(4)
+y.append(5)
+z = [1, 2, 3, 4, 5] # a different list!
+x.append(6)
+y = "hello"
+
+
+def foo(lst):
+    lst.append("hello")
+    bar(lst)
+
+def bar(myLst):
+    print(myLst)
+
+foo(x)
diff --git a/v3/selection_sort_watch.py b/v3/selection_sort_watch.py
new file mode 100644
index 000000000..622f949ed
--- /dev/null
+++ b/v3/selection_sort_watch.py
@@ -0,0 +1,15 @@
+# created by Peter Norvig
+from watch_module import watchfn, watchedlist
+
+# The decorator here says that the 0th positional argument should be a list;
+# we will watch it, and the locals named i, mini, and min_index
+@watchfn((watchedlist, 'i mini min_index'))
+def selection_sort(A):
+    for i in range(len(A)): #break
+        mini = min(A[i:])
+        min_index = A[i:].index(mini) + i   
+        if i != min_index:
+            A[min_index], A[i] = A[i], A[min_index]
+    return A
+            
+print(selection_sort([3, 5, 2, 1, 8, 5, 9]))
diff --git a/v3/simple_sandbox.py b/v3/simple_sandbox.py
new file mode 100644
index 000000000..e5752c0e3
--- /dev/null
+++ b/v3/simple_sandbox.py
@@ -0,0 +1,154 @@
+# This is a SUPER simple sandbox, with code copied from pg_logger.py
+# It's not meant to be actually secure, so ALWAYS practice defense in
+# depth and use it alongside more heavyweight OS-level sandboxing using,
+# say, Linux containers, and in conjunction with other sandboxes like:
+#   https://github.com/cemc/safeexec
+#
+# tested so far on Linux 2.6.32 (x86-64) and Mac OS X 10.8
+#
+# Philip Guo (philip@pgbovine.net)
+
+import bdb
+import sys
+import traceback
+import types
+
+# TODO: use the 'six' package to smooth out Py2 and Py3 differences
+is_python3 = (sys.version_info[0] == 3)
+
+if is_python3:
+  import io as cStringIO
+else:
+  import cStringIO
+
+
+#DEBUG = False
+DEBUG = True
+
+
+# simple sandboxing scheme:
+#
+# - use resource.setrlimit to deprive this process of ANY file descriptors
+#   (which will cause file read/write and subprocess shell launches to fail)
+# - restrict user builtins and module imports
+#   (beware that this is NOT foolproof at all ... there are known flaws!)
+#
+# ALWAYS use defense-in-depth and don't just rely on these simple mechanisms
+import resource
+
+
+# whitelist of module imports
+ALLOWED_MODULE_IMPORTS = ('doctest',)
+
+# PREEMPTIVELY import all of these modules, so that when the user's
+# script imports them, it won't try to do a file read (since they've
+# already been imported and cached in memory). Remember that when
+# the user's code runs, resource.setrlimit(resource.RLIMIT_NOFILE, (0, 0))
+# will already be in effect, so no more files can be opened.
+#
+# NB: All modules in CUSTOM_MODULE_IMPORTS will be imported, warts and
+# all, so they better work on Python 2 and 3!
+for m in ALLOWED_MODULE_IMPORTS:
+  __import__(m)
+
+
+# there's no point in banning builtins since malicious users can
+# circumvent those anyways
+
+
+class SandboxExecutor(bdb.Bdb):
+    def __init__(self, finalizer_func):
+        bdb.Bdb.__init__(self)
+        self.ORIGINAL_STDOUT = sys.stdout
+        self.ORIGINAL_STDERR = sys.stderr
+        self.executed_script = None # Python script to be executed!
+
+        # a function that takes the output trace as a parameter and
+        # processes it
+        self.finalizer_func = finalizer_func
+
+
+    def _runscript(self, script_str):
+        self.executed_script = script_str
+
+        self.user_stdout = cStringIO.StringIO()
+        self.user_stderr = cStringIO.StringIO()
+
+        sys.stdout = self.user_stdout
+        sys.stderr = self.user_stderr
+
+        try:
+          # enforce resource limits RIGHT BEFORE running script_str
+
+          # set ~200MB virtual memory limit AND a 5-second CPU time
+          # limit (tuned for Webfaction shared hosting) to protect against
+          # memory bombs such as:
+          #   x = 2
+          #   while True: x = x*x
+          resource.setrlimit(resource.RLIMIT_AS, (200000000, 200000000))
+          resource.setrlimit(resource.RLIMIT_CPU, (5, 5))
+
+          # protect against unauthorized filesystem accesses ...
+          resource.setrlimit(resource.RLIMIT_NOFILE, (0, 0)) # no opened files allowed
+
+          # VERY WEIRD. If you activate this resource limitation, it
+          # ends up generating an EMPTY trace for the following program:
+          #   "x = 0\nfor i in range(10):\n  x += 1\n   print x\n  x += 1\n"
+          # (at least on my Webfaction hosting with Python 2.7)
+          #resource.setrlimit(resource.RLIMIT_FSIZE, (0, 0))  # (redundancy for paranoia)
+
+          # sys.modules contains an in-memory cache of already-loaded
+          # modules, so if you delete modules from here, they will
+          # need to be re-loaded from the filesystem.
+          #
+          # Thus, as an extra precaution, remove these modules so that
+          # they can't be re-imported without opening a new file,
+          # which is disallowed by resource.RLIMIT_NOFILE
+          #
+          # Of course, this isn't a foolproof solution by any means,
+          # and it might lead to UNEXPECTED FAILURES later in execution.
+          del sys.modules['os']
+          del sys.modules['os.path']
+          del sys.modules['sys']
+
+          # ... here we go!
+          self.run(script_str)
+        # sys.exit ...
+        except SystemExit:
+          raise bdb.BdbQuit
+        except:
+          if DEBUG:
+            traceback.print_exc()
+          raise bdb.BdbQuit # need to forceably STOP execution
+
+
+    def finalize(self):
+      sys.stdout = self.ORIGINAL_STDOUT
+      sys.stderr = self.ORIGINAL_STDERR
+      return self.finalizer_func(self)
+
+
+def print_finalizer(executor):
+    #print 'DONE:'
+    #print executor.executed_script
+    print('stdout:')
+    print(executor.user_stdout.getvalue())
+    print('stderr:')
+    print(executor.user_stderr.getvalue())
+
+
+# the MAIN meaty function!!!
+def exec_str(script_str, finalizer):
+  logger = SandboxExecutor(finalizer)
+
+  try:
+    logger._runscript(script_str)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    return logger.finalize()
+
+
+if __name__ == "__main__":
+   script = open(sys.argv[1]).read()
+   exec_str(script, print_finalizer)
diff --git a/v3/support-and-privacy.html b/v3/support-and-privacy.html
new file mode 100644
index 000000000..0fad297c8
--- /dev/null
+++ b/v3/support-and-privacy.html
@@ -0,0 +1,84 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Online Python Tutor - Visualize program execution</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+</head>
+
+<body>
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">
+
+<h1>Online Python Tutor &ndash; support and privacy document</h1>
+
+<p>
+<a href="http://pythontutor.com/">Online Python Tutor</a> supports
+Python 2.7 and 3.3, Java 7, JavaScript ES5 strict, and TypeScript 1.4.1 with limited module imports and no file I/O.
+</p>
+
+<hr/>
+
+<h2>Support</h2>
+
+<p>Have a question? Maybe the <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/user-FAQ.md">FAQ</a>
+or other <a
+href="https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/">documentation</a>
+can help. Or check out its code at <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">GitHub</a>.</p>
+
+<p>Email Philip Guo at philip@pgbovine.net for all support questions.</p>
+
+<hr/>
+
+<h2>Privacy</h2>
+
+<p>By using Online Python Tutor, your visualized code, options, and IP
+address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, Online Python Tutor does not collect any personal
+information, cookies, or session state from users.</p>
+
+<p style="margin-top: 8px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+</body>
+</html>
diff --git a/v3/test-trace.js b/v3/test-trace.js
new file mode 100644
index 000000000..d6e0b1c5b
--- /dev/null
+++ b/v3/test-trace.js
@@ -0,0 +1 @@
+var trace = {"code": "x = 5\ny = 10\nz = x + y\n", "trace": [{"ordered_globals": [], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {}, "heap": {}, "line": 1, "event": "step_line"}, {"ordered_globals": ["x"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"x": 5}, "heap": {}, "line": 2, "event": "step_line"}, {"ordered_globals": ["x", "y"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"y": 10, "x": 5}, "heap": {}, "line": 3, "event": "step_line"}, {"ordered_globals": ["x", "y", "z"], "stdout": "", "func_name": "<module>", "stack_to_render": [], "globals": {"y": 10, "x": 5, "z": 15}, "heap": {}, "line": 3, "event": "return"}]};
diff --git a/v3/tests/backend-tests/breakpoints.golden b/v3/tests/backend-tests/breakpoints.golden
new file mode 100644
index 000000000..d7929e839
--- /dev/null
+++ b/v3/tests/backend-tests/breakpoints.golden
@@ -0,0 +1,1392 @@
+{
+  "code": "# when '#break' is the last string in a line, then stop at only those lines\n\nx = [1, 2, 3]\ny = [4, 5, 6]\nz = y\ny = x\nx = z\n\nx = [1, 2, 3] # a different [1, 2, 3] list!\ny = x\nx.append(4) #break\ny.append(5)\nz = [1, 2, 3, 4, 5] # a different list!  #break\nx.append(6)\ny.append(7)\ny = \"hello\" #break\n\n\ndef foo(lst): #break\n    lst.append(\"hello\") #break\n    bar(lst)\n\ndef bar(myLst):\n    print(myLst) #break\n\nfoo(x)\nfoo(z)\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ], 
+        "bar": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "5": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/breakpoints.golden_py3 b/v3/tests/backend-tests/breakpoints.golden_py3
new file mode 100644
index 000000000..0d936f878
--- /dev/null
+++ b/v3/tests/backend-tests/breakpoints.golden_py3
@@ -0,0 +1,1392 @@
+{
+  "code": "# when '#break' is the last string in a line, then stop at only those lines\n\nx = [1, 2, 3]\ny = [4, 5, 6]\nz = y\ny = x\nx = z\n\nx = [1, 2, 3] # a different [1, 2, 3] list!\ny = x\nx.append(4) #break\ny.append(5)\nz = [1, 2, 3, 4, 5] # a different list!  #break\nx.append(6)\ny.append(7)\ny = \"hello\" #break\n\n\ndef foo(lst): #break\n    lst.append(\"hello\") #break\n    bar(lst)\n\ndef bar(myLst):\n    print(myLst) #break\n\nfoo(x)\nfoo(z)\n", 
+  "trace": [
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "2": [
+          "LIST", 
+          4, 
+          5, 
+          6
+        ], 
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          3
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ]
+      }, 
+      "line": 23, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "myLst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null, 
+            "myLst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f4", 
+          "ordered_varnames": [
+            "myLst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 24, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "[1, 2, 3, 4, 5, 6, 7, 'hello']\n[1, 2, 3, 4, 5, 'hello']\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": null, 
+            "lst": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f3", 
+          "ordered_varnames": [
+            "lst", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": "hello", 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          5
+        ], 
+        "bar": [
+          "REF", 
+          6
+        ], 
+        "z": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "3": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          6, 
+          7, 
+          "hello"
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3, 
+          4, 
+          5, 
+          "hello"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "foo(lst)", 
+          null
+        ], 
+        "6": [
+          "FUNCTION", 
+          "bar(myLst)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/breakpoints.txt b/v3/tests/backend-tests/breakpoints.txt
new file mode 100644
index 000000000..338e45ad1
--- /dev/null
+++ b/v3/tests/backend-tests/breakpoints.txt
@@ -0,0 +1,27 @@
+# when '#break' is the last string in a line, then stop at only those lines
+
+x = [1, 2, 3]
+y = [4, 5, 6]
+z = y
+y = x
+x = z
+
+x = [1, 2, 3] # a different [1, 2, 3] list!
+y = x
+x.append(4) #break
+y.append(5)
+z = [1, 2, 3, 4, 5] # a different list!  #break
+x.append(6)
+y.append(7)
+y = "hello" #break
+
+
+def foo(lst): #break
+    lst.append("hello") #break
+    bar(lst)
+
+def bar(myLst):
+    print(myLst) #break
+
+foo(x)
+foo(z)
diff --git a/v3/tests/backend-tests/bytearray.golden b/v3/tests/backend-tests/bytearray.golden
new file mode 100644
index 000000000..6e47e975d
--- /dev/null
+++ b/v3/tests/backend-tests/bytearray.golden
@@ -0,0 +1,71 @@
+{
+  "code": "# reported as an error in server logs\nhex_string = \"deadbeef\"\nhex_data = hex_string.decode(\"hex\")\nnew = bytearray(hex_data)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "hex_string"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "hex_string": "deadbeef"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "hex_string", 
+        "hex_data"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "hex_data": "\u07ad\ufffd\ufffd", 
+        "hex_string": "deadbeef"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "hex_string", 
+        "hex_data", 
+        "new"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "new": [
+          "REF", 
+          1
+        ], 
+        "hex_data": "\u07ad\ufffd\ufffd", 
+        "hex_string": "deadbeef"
+      }, 
+      "heap": {
+        "1": [
+          "bytearray", 
+          "\u07ad\ufffd\ufffd"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/bytearray.golden_py3 b/v3/tests/backend-tests/bytearray.golden_py3
new file mode 100644
index 000000000..3c6b02d6b
--- /dev/null
+++ b/v3/tests/backend-tests/bytearray.golden_py3
@@ -0,0 +1,44 @@
+{
+  "code": "# reported as an error in server logs\nhex_string = \"deadbeef\"\nhex_data = hex_string.decode(\"hex\")\nnew = bytearray(hex_data)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "hex_string"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "hex_string": "deadbeef"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "hex_string"
+      ], 
+      "stdout": "", 
+      "exception_msg": "AttributeError: 'str' object has no attribute 'decode'", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "hex_string": "deadbeef"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/bytearray.txt b/v3/tests/backend-tests/bytearray.txt
new file mode 100644
index 000000000..7b9627be0
--- /dev/null
+++ b/v3/tests/backend-tests/bytearray.txt
@@ -0,0 +1,4 @@
+# reported as an error in server logs
+hex_string = "deadbeef"
+hex_data = hex_string.decode("hex")
+new = bytearray(hex_data)
diff --git a/v3/tests/backend-tests/callback-test.golden b/v3/tests/backend-tests/callback-test.golden
new file mode 100644
index 000000000..5cd262b52
--- /dev/null
+++ b/v3/tests/backend-tests/callback-test.golden
@@ -0,0 +1,518 @@
+{
+  "code": "# Tests to make sure that OPT tracks execution from user code (foo) to a\n# function in an external module (callback_module.callback_func) and\n# then back out to user code (bar). If all goes well, then both foo and\n# bar will be displayed on the stack. Ideally\n# callback_module.callback_func should also be on the stack, but since\n# OPT doesn't trace external code, it simply ignores that stack entry.\n\n# The incorrect behavior is NOT to trace inside of bar.\n\n\nimport callback_module\n\ndef foo():\n  callback_module.callback_func(bar)\n\ndef bar():\n    print(\"I'm in a bar!!!\")\n    \nfoo()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "I'm in a bar!!!\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "I'm in a bar!!!\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "I'm in a bar!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "callback_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/callback-test.golden_py3 b/v3/tests/backend-tests/callback-test.golden_py3
new file mode 100644
index 000000000..b0321dc55
--- /dev/null
+++ b/v3/tests/backend-tests/callback-test.golden_py3
@@ -0,0 +1,518 @@
+{
+  "code": "# Tests to make sure that OPT tracks execution from user code (foo) to a\n# function in an external module (callback_module.callback_func) and\n# then back out to user code (bar). If all goes well, then both foo and\n# bar will be displayed on the stack. Ideally\n# callback_module.callback_func should also be on the stack, but since\n# OPT doesn't trace external code, it simply ignores that stack entry.\n\n# The incorrect behavior is NOT to trace inside of bar.\n\n\nimport callback_module\n\ndef foo():\n  callback_module.callback_func(bar)\n\ndef bar():\n    print(\"I'm in a bar!!!\")\n    \nfoo()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "I'm in a bar!!!\n", 
+      "func_name": "bar", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "bar", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "bar_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "I'm in a bar!!!\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "callback_module", 
+        "foo", 
+        "bar"
+      ], 
+      "stdout": "I'm in a bar!!!\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "callback_module": [
+          "REF", 
+          1
+        ], 
+        "bar": [
+          "REF", 
+          3
+        ], 
+        "foo": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "bar()", 
+          null
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/callback-test.txt b/v3/tests/backend-tests/callback-test.txt
new file mode 100644
index 000000000..5faf076ff
--- /dev/null
+++ b/v3/tests/backend-tests/callback-test.txt
@@ -0,0 +1,19 @@
+# Tests to make sure that OPT tracks execution from user code (foo) to a
+# function in an external module (callback_module.callback_func) and
+# then back out to user code (bar). If all goes well, then both foo and
+# bar will be displayed on the stack. Ideally
+# callback_module.callback_func should also be on the stack, but since
+# OPT doesn't trace external code, it simply ignores that stack entry.
+
+# The incorrect behavior is NOT to trace inside of bar.
+
+
+import callback_module
+
+def foo():
+  callback_module.callback_func(bar)
+
+def bar():
+    print("I'm in a bar!!!")
+    
+foo()
diff --git a/v3/tests/backend-tests/caught_exception_1.golden b/v3/tests/backend-tests/caught_exception_1.golden
new file mode 100644
index 000000000..2418eb530
--- /dev/null
+++ b/v3/tests/backend-tests/caught_exception_1.golden
@@ -0,0 +1,66 @@
+{
+  "code": "try:\n  x = 1 / 0\nexcept:\n  print(\"DIVIDE BY ZERO\")\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "DIVIDE BY ZERO\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/caught_exception_1.golden_py3 b/v3/tests/backend-tests/caught_exception_1.golden_py3
new file mode 100644
index 000000000..b9d796a10
--- /dev/null
+++ b/v3/tests/backend-tests/caught_exception_1.golden_py3
@@ -0,0 +1,66 @@
+{
+  "code": "try:\n  x = 1 / 0\nexcept:\n  print(\"DIVIDE BY ZERO\")\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "DIVIDE BY ZERO\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/caught_exception_1.txt b/v3/tests/backend-tests/caught_exception_1.txt
new file mode 100644
index 000000000..ad24ed88b
--- /dev/null
+++ b/v3/tests/backend-tests/caught_exception_1.txt
@@ -0,0 +1,5 @@
+try:
+  x = 1 / 0
+except:
+  print("DIVIDE BY ZERO")
+
diff --git a/v3/tests/backend-tests/caught_exception_2.golden b/v3/tests/backend-tests/caught_exception_2.golden
new file mode 100644
index 000000000..a1452b2f6
--- /dev/null
+++ b/v3/tests/backend-tests/caught_exception_2.golden
@@ -0,0 +1,77 @@
+{
+  "code": "# caught exception:\ntry:\n  x = 1 / 0\nexcept:\n  print(\"DIVIDE BY ZERO\")\n\n\n# uncaught:\nprint(y)\n\nprint(\"should not reach here\")\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "DIVIDE BY ZERO\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "DIVIDE BY ZERO\n", 
+      "exception_msg": "NameError: name 'y' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/caught_exception_2.golden_py3 b/v3/tests/backend-tests/caught_exception_2.golden_py3
new file mode 100644
index 000000000..c0fb9edc3
--- /dev/null
+++ b/v3/tests/backend-tests/caught_exception_2.golden_py3
@@ -0,0 +1,77 @@
+{
+  "code": "# caught exception:\ntry:\n  x = 1 / 0\nexcept:\n  print(\"DIVIDE BY ZERO\")\n\n\n# uncaught:\nprint(y)\n\nprint(\"should not reach here\")\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "DIVIDE BY ZERO\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "DIVIDE BY ZERO\n", 
+      "exception_msg": "NameError: name 'y' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 9, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/caught_exception_2.txt b/v3/tests/backend-tests/caught_exception_2.txt
new file mode 100644
index 000000000..66768e16c
--- /dev/null
+++ b/v3/tests/backend-tests/caught_exception_2.txt
@@ -0,0 +1,12 @@
+# caught exception:
+try:
+  x = 1 / 0
+except:
+  print("DIVIDE BY ZERO")
+
+
+# uncaught:
+print(y)
+
+print("should not reach here")
+
diff --git a/v3/tests/backend-tests/circ_ref.golden b/v3/tests/backend-tests/circ_ref.golden
new file mode 100644
index 000000000..ea8bc5c65
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref.golden
@@ -0,0 +1,65 @@
+{
+  "code": "# true circular reference\n\nx = [1, 2]\nx.append(x)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/circ_ref.golden_py3 b/v3/tests/backend-tests/circ_ref.golden_py3
new file mode 100644
index 000000000..ea8bc5c65
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref.golden_py3
@@ -0,0 +1,65 @@
+{
+  "code": "# true circular reference\n\nx = [1, 2]\nx.append(x)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/circ_ref.txt b/v3/tests/backend-tests/circ_ref.txt
new file mode 100644
index 000000000..7af6d5e6d
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref.txt
@@ -0,0 +1,5 @@
+# true circular reference
+
+x = [1, 2]
+x.append(x)
+
diff --git a/v3/tests/backend-tests/circ_ref_2.golden b/v3/tests/backend-tests/circ_ref_2.golden
new file mode 100644
index 000000000..c1fb56894
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref_2.golden
@@ -0,0 +1,116 @@
+{
+  "code": "# true indirect circular reference\n\nx = [1, 2]\ny = [3, 4, x]\nx.append(y)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/circ_ref_2.golden_py3 b/v3/tests/backend-tests/circ_ref_2.golden_py3
new file mode 100644
index 000000000..c1fb56894
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref_2.golden_py3
@@ -0,0 +1,116 @@
+{
+  "code": "# true indirect circular reference\n\nx = [1, 2]\ny = [3, 4, x]\nx.append(y)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          3, 
+          4, 
+          [
+            "REF", 
+            1
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/circ_ref_2.txt b/v3/tests/backend-tests/circ_ref_2.txt
new file mode 100644
index 000000000..49502c869
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref_2.txt
@@ -0,0 +1,6 @@
+# true indirect circular reference
+
+x = [1, 2]
+y = [3, 4, x]
+x.append(y)
+
diff --git a/v3/tests/backend-tests/circ_ref_fake.golden b/v3/tests/backend-tests/circ_ref_fake.golden
new file mode 100644
index 000000000..11e8e7d50
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref_fake.golden
@@ -0,0 +1,168 @@
+{
+  "code": "# not a true circular reference\n\na = [10, 20, 30]\nb = a\nc = [10, 20, 30]\nd = (a, b, c)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "b": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b", 
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "c": [
+          "REF", 
+          2
+        ], 
+        "b": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b", 
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "c": [
+          "REF", 
+          2
+        ], 
+        "b": [
+          "REF", 
+          1
+        ], 
+        "d": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/circ_ref_fake.golden_py3 b/v3/tests/backend-tests/circ_ref_fake.golden_py3
new file mode 100644
index 000000000..11e8e7d50
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref_fake.golden_py3
@@ -0,0 +1,168 @@
+{
+  "code": "# not a true circular reference\n\na = [10, 20, 30]\nb = a\nc = [10, 20, 30]\nd = (a, b, c)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "b": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b", 
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "c": [
+          "REF", 
+          2
+        ], 
+        "b": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a", 
+        "b", 
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ], 
+        "c": [
+          "REF", 
+          2
+        ], 
+        "b": [
+          "REF", 
+          1
+        ], 
+        "d": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            1
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/circ_ref_fake.txt b/v3/tests/backend-tests/circ_ref_fake.txt
new file mode 100644
index 000000000..3bbcc94f2
--- /dev/null
+++ b/v3/tests/backend-tests/circ_ref_fake.txt
@@ -0,0 +1,7 @@
+# not a true circular reference
+
+a = [10, 20, 30]
+b = a
+c = [10, 20, 30]
+d = (a, b, c)
+
diff --git a/v3/tests/backend-tests/class_test.golden b/v3/tests/backend-tests/class_test.golden
new file mode 100644
index 000000000..5266c9782
--- /dev/null
+++ b/v3/tests/backend-tests/class_test.golden
@@ -0,0 +1,1444 @@
+{
+  "code": "class Point:\n    def __init__(self, x, y):\n        self.x = x\n        self.y = y\n    \n    def __str__(self):\n        return \"(%d, %d)\" % (self.x, self.y)\n\np = Point(1, 2)\nprint(p)\np2 = Point(3, -4)\nprint(p2)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "(1, 2)", 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ], 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f4", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f4", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": "(3, -4)", 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f4", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n(3, -4)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/class_test.golden_py3 b/v3/tests/backend-tests/class_test.golden_py3
new file mode 100644
index 000000000..5266c9782
--- /dev/null
+++ b/v3/tests/backend-tests/class_test.golden_py3
@@ -0,0 +1,1444 @@
+{
+  "code": "class Point:\n    def __init__(self, x, y):\n        self.x = x\n        self.y = y\n    \n    def __str__(self):\n        return \"(%d, %d)\" % (self.x, self.y)\n\np = Point(1, 2)\nprint(p)\np2 = Point(3, -4)\nprint(p2)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "self": [
+              "REF", 
+              4
+            ], 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": "(1, 2)", 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "<incomplete object>"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "y": -4, 
+            "x": 3, 
+            "self": [
+              "REF", 
+              5
+            ], 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f3", 
+          "ordered_varnames": [
+            "self", 
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f4", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f4", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n", 
+      "func_name": "__str__", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": "(3, -4)", 
+            "self": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__str__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__str___f4", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Point", 
+        "p", 
+        "p2"
+      ], 
+      "stdout": "(1, 2)\n(3, -4)\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "p2": [
+          "REF", 
+          5
+        ], 
+        "p": [
+          "REF", 
+          4
+        ], 
+        "Point": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Point", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "__str__", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self, x, y)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__str__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(1, 2)"
+        ], 
+        "5": [
+          "INSTANCE_PPRINT", 
+          "Point", 
+          "(3, -4)"
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/class_test.txt b/v3/tests/backend-tests/class_test.txt
new file mode 100644
index 000000000..77d89420a
--- /dev/null
+++ b/v3/tests/backend-tests/class_test.txt
@@ -0,0 +1,13 @@
+class Point:
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+    
+    def __str__(self):
+        return "(%d, %d)" % (self.x, self.y)
+
+p = Point(1, 2)
+print(p)
+p2 = Point(3, -4)
+print(p2)
+
diff --git a/v3/tests/backend-tests/class_test_2.golden b/v3/tests/backend-tests/class_test_2.golden
new file mode 100644
index 000000000..83ed6755e
--- /dev/null
+++ b/v3/tests/backend-tests/class_test_2.golden
@@ -0,0 +1,186 @@
+{
+  "code": "class Outer():\n   pass\n\no = Outer()\no.a = 5\no.b = \"Hi\"\nprint(o)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer", 
+          [
+            "a", 
+            5
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer", 
+          [
+            "a", 
+            5
+          ], 
+          [
+            "b", 
+            "Hi"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "<__main__.Outer instance at 0xADDR>\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer", 
+          [
+            "a", 
+            5
+          ], 
+          [
+            "b", 
+            "Hi"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/class_test_2.golden_py3 b/v3/tests/backend-tests/class_test_2.golden_py3
new file mode 100644
index 000000000..55293b1d5
--- /dev/null
+++ b/v3/tests/backend-tests/class_test_2.golden_py3
@@ -0,0 +1,186 @@
+{
+  "code": "class Outer():\n   pass\n\no = Outer()\no.a = 5\no.b = \"Hi\"\nprint(o)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer", 
+          [
+            "a", 
+            5
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer", 
+          [
+            "a", 
+            5
+          ], 
+          [
+            "b", 
+            "Hi"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Outer", 
+        "o"
+      ], 
+      "stdout": "<__main__.Outer object at 0xADDR>\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Outer": [
+          "REF", 
+          1
+        ], 
+        "o": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Outer", 
+          []
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Outer", 
+          [
+            "a", 
+            5
+          ], 
+          [
+            "b", 
+            "Hi"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/class_test_2.txt b/v3/tests/backend-tests/class_test_2.txt
new file mode 100644
index 000000000..c6532c1b1
--- /dev/null
+++ b/v3/tests/backend-tests/class_test_2.txt
@@ -0,0 +1,8 @@
+class Outer():
+   pass
+
+o = Outer()
+o.a = 5
+o.b = "Hi"
+print(o)
+
diff --git a/v3/tests/backend-tests/class_test_3.golden b/v3/tests/backend-tests/class_test_3.golden
new file mode 100644
index 000000000..314304c78
--- /dev/null
+++ b/v3/tests/backend-tests/class_test_3.golden
@@ -0,0 +1,470 @@
+{
+  "code": "class Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\npat = Staff601()\nprint(pat.course)\n\npat.name = 'Pat'\npat.age = 60\npat.role = 'Professor'\n\nprint(pat.building)\npat.building = 32\nprint(pat.building)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/class_test_3.golden_py3 b/v3/tests/backend-tests/class_test_3.golden_py3
new file mode 100644
index 000000000..314304c78
--- /dev/null
+++ b/v3/tests/backend-tests/class_test_3.golden_py3
@@ -0,0 +1,470 @@
+{
+  "code": "class Staff601:\n    course = '6.01'\n    building = 34\n    room = 501\n\npat = Staff601()\nprint(pat.course)\n\npat.name = 'Pat'\npat.age = 60\npat.role = 'Professor'\n\nprint(pat.building)\npat.building = 32\nprint(pat.building)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Staff601", 
+        "pat"
+      ], 
+      "stdout": "6.01\n34\n32\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Staff601": [
+          "REF", 
+          1
+        ], 
+        "pat": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Staff601", 
+          [], 
+          [
+            "building", 
+            34
+          ], 
+          [
+            "course", 
+            "6.01"
+          ], 
+          [
+            "room", 
+            501
+          ]
+        ], 
+        "2": [
+          "INSTANCE", 
+          "Staff601", 
+          [
+            "age", 
+            60
+          ], 
+          [
+            "building", 
+            32
+          ], 
+          [
+            "name", 
+            "Pat"
+          ], 
+          [
+            "role", 
+            "Professor"
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/class_test_3.txt b/v3/tests/backend-tests/class_test_3.txt
new file mode 100644
index 000000000..55c604882
--- /dev/null
+++ b/v3/tests/backend-tests/class_test_3.txt
@@ -0,0 +1,16 @@
+class Staff601:
+    course = '6.01'
+    building = 34
+    room = 501
+
+pat = Staff601()
+print(pat.course)
+
+pat.name = 'Pat'
+pat.age = 60
+pat.role = 'Professor'
+
+print(pat.building)
+pat.building = 32
+print(pat.building)
+
diff --git a/v3/tests/backend-tests/closure-shadow-same-name.golden b/v3/tests/backend-tests/closure-shadow-same-name.golden
new file mode 100644
index 000000000..5f17e5c8b
--- /dev/null
+++ b/v3/tests/backend-tests/closure-shadow-same-name.golden
@@ -0,0 +1,505 @@
+{
+  "code": "# some of the params in f and g have identical names AND values,\n# so make sure they're all displayed properly\ndef f(x, y, z):\n  def g(x, y):\n    return x\n  return g(x, y)\n\nf(1, 2, 3)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/closure-shadow-same-name.golden_py3 b/v3/tests/backend-tests/closure-shadow-same-name.golden_py3
new file mode 100644
index 000000000..5f17e5c8b
--- /dev/null
+++ b/v3/tests/backend-tests/closure-shadow-same-name.golden_py3
@@ -0,0 +1,505 @@
+{
+  "code": "# some of the params in f and g have identical names AND values,\n# so make sure they're all displayed properly\ndef f(x, y, z):\n  def g(x, y):\n    return x\n  return g(x, y)\n\nf(1, 2, 3)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 1, 
+            "z": 3, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "z", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y, z)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x, y)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/closure-shadow-same-name.txt b/v3/tests/backend-tests/closure-shadow-same-name.txt
new file mode 100644
index 000000000..13d20e618
--- /dev/null
+++ b/v3/tests/backend-tests/closure-shadow-same-name.txt
@@ -0,0 +1,8 @@
+# some of the params in f and g have identical names AND values,
+# so make sure they're all displayed properly
+def f(x, y, z):
+  def g(x, y):
+    return x
+  return g(x, y)
+
+f(1, 2, 3)
diff --git a/v3/tests/backend-tests/cmodule.golden b/v3/tests/backend-tests/cmodule.golden
new file mode 100644
index 000000000..e29fbc456
--- /dev/null
+++ b/v3/tests/backend-tests/cmodule.golden
@@ -0,0 +1,37 @@
+{
+  "code": "# importing some C-ish module ...\n# make sure this doesn't crash in Python 2 or 3\nfrom datetime import datetime_CAPI\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "datetime_CAPI"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "datetime_CAPI": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "PyCapsule", 
+          "<capsule object \"datetime.datetime_CAPI\" at 0xADDR>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/cmodule.golden_py3 b/v3/tests/backend-tests/cmodule.golden_py3
new file mode 100644
index 000000000..562a7996a
--- /dev/null
+++ b/v3/tests/backend-tests/cmodule.golden_py3
@@ -0,0 +1,37 @@
+{
+  "code": "# importing some C-ish module ...\n# make sure this doesn't crash in Python 2 or 3\nfrom datetime import datetime_CAPI\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "datetime_CAPI"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "datetime_CAPI": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "PyCapsule"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/cmodule.txt b/v3/tests/backend-tests/cmodule.txt
new file mode 100644
index 000000000..53bb90850
--- /dev/null
+++ b/v3/tests/backend-tests/cmodule.txt
@@ -0,0 +1,3 @@
+# importing some C-ish module ...
+# make sure this doesn't crash in Python 2 or 3
+from datetime import datetime_CAPI
diff --git a/v3/tests/backend-tests/cs61a-multi-lambdas.golden b/v3/tests/backend-tests/cs61a-multi-lambdas.golden
new file mode 100644
index 000000000..9a42aa6db
--- /dev/null
+++ b/v3/tests/backend-tests/cs61a-multi-lambdas.golden
@@ -0,0 +1,2330 @@
+{
+  "code": "# from Berkeley cs61a\ndef f(x):\n    return lambda x: lambda x: x+x+x\n\nh = lambda x: x+x+x # identical code to line 3\n\ng = f(3)\ng(4)(6)\n\nf(1)(2)(5)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 18, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            5, 
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            5, 
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 15, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            5, 
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            4
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/cs61a-multi-lambdas.golden_py3 b/v3/tests/backend-tests/cs61a-multi-lambdas.golden_py3
new file mode 100644
index 000000000..a488fda55
--- /dev/null
+++ b/v3/tests/backend-tests/cs61a-multi-lambdas.golden_py3
@@ -0,0 +1,2330 @@
+{
+  "code": "# from Berkeley cs61a\ndef f(x):\n    return lambda x: lambda x: x+x+x\n\nh = lambda x: x+x+x # identical code to line 3\n\ng = f(3)\ng(4)(6)\n\nf(1)(2)(5)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 18, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            5, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            5, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 15, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            5, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f2_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f4_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 3>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 3>_f5_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          2
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          2
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          4
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 3>", 
+          5
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/cs61a-multi-lambdas.txt b/v3/tests/backend-tests/cs61a-multi-lambdas.txt
new file mode 100644
index 000000000..973f35267
--- /dev/null
+++ b/v3/tests/backend-tests/cs61a-multi-lambdas.txt
@@ -0,0 +1,10 @@
+# from Berkeley cs61a
+def f(x):
+    return lambda x: lambda x: x+x+x
+
+h = lambda x: x+x+x # identical code to line 3
+
+g = f(3)
+g(4)(6)
+
+f(1)(2)(5)
diff --git a/v3/tests/backend-tests/data_test.golden b/v3/tests/backend-tests/data_test.golden
new file mode 100644
index 000000000..68e3251eb
--- /dev/null
+++ b/v3/tests/backend-tests/data_test.golden
@@ -0,0 +1,213 @@
+{
+  "code": "x = ('hello', 'world', 1, 2, 3, 'goodbye')\ny = list(x)\nz = set(x)\nw = {\"joe\" : 5, \"mindy\" : 6, \"jack\" : 7}\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3, 
+          "goodbye", 
+          "world", 
+          "hello"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "w"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          3
+        ], 
+        "w": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3, 
+          "goodbye", 
+          "world", 
+          "hello"
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "mindy", 
+            6
+          ], 
+          [
+            "joe", 
+            5
+          ], 
+          [
+            "jack", 
+            7
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/data_test.golden_py3 b/v3/tests/backend-tests/data_test.golden_py3
new file mode 100644
index 000000000..68e3251eb
--- /dev/null
+++ b/v3/tests/backend-tests/data_test.golden_py3
@@ -0,0 +1,213 @@
+{
+  "code": "x = ('hello', 'world', 1, 2, 3, 'goodbye')\ny = list(x)\nz = set(x)\nw = {\"joe\" : 5, \"mindy\" : 6, \"jack\" : 7}\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3, 
+          "goodbye", 
+          "world", 
+          "hello"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "w"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          3
+        ], 
+        "w": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          1, 
+          2, 
+          3, 
+          "goodbye"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3, 
+          "goodbye", 
+          "world", 
+          "hello"
+        ], 
+        "4": [
+          "DICT", 
+          [
+            "mindy", 
+            6
+          ], 
+          [
+            "joe", 
+            5
+          ], 
+          [
+            "jack", 
+            7
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/data_test.txt b/v3/tests/backend-tests/data_test.txt
new file mode 100644
index 000000000..664717167
--- /dev/null
+++ b/v3/tests/backend-tests/data_test.txt
@@ -0,0 +1,4 @@
+x = ('hello', 'world', 1, 2, 3, 'goodbye')
+y = list(x)
+z = set(x)
+w = {"joe" : 5, "mindy" : 6, "jack" : 7}
diff --git a/v3/tests/backend-tests/dict_error.golden b/v3/tests/backend-tests/dict_error.golden
new file mode 100644
index 000000000..1d65cbe41
--- /dev/null
+++ b/v3/tests/backend-tests/dict_error.golden
@@ -0,0 +1,207 @@
+{
+  "code": "def foo():\n  local_y[('tup', 'le')] = set([1, 2, 3])\n\nfoo()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "exception_msg": "NameError: global name 'local_y' is not defined", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "exception_msg": "NameError: global name 'local_y' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/dict_error.golden_py3 b/v3/tests/backend-tests/dict_error.golden_py3
new file mode 100644
index 000000000..1d65cbe41
--- /dev/null
+++ b/v3/tests/backend-tests/dict_error.golden_py3
@@ -0,0 +1,207 @@
+{
+  "code": "def foo():\n  local_y[('tup', 'le')] = set([1, 2, 3])\n\nfoo()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "exception_msg": "NameError: global name 'local_y' is not defined", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "foo"
+      ], 
+      "stdout": "", 
+      "exception_msg": "NameError: global name 'local_y' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "foo": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/dict_error.txt b/v3/tests/backend-tests/dict_error.txt
new file mode 100644
index 000000000..fb6ed90ee
--- /dev/null
+++ b/v3/tests/backend-tests/dict_error.txt
@@ -0,0 +1,4 @@
+def foo():
+  local_y[('tup', 'le')] = set([1, 2, 3])
+
+foo()
diff --git a/v3/tests/backend-tests/dict_test.golden b/v3/tests/backend-tests/dict_test.golden
new file mode 100644
index 000000000..0c05ae2da
--- /dev/null
+++ b/v3/tests/backend-tests/dict_test.golden
@@ -0,0 +1,730 @@
+{
+  "code": "x = {1 : 2}\nx[('tup', 'le')] = set([1, 2, 3])\n\ndef foo():\n  local_x = {1 : 2}\n  local_y = {}\n  local_y[('tup', 'le')] = set([1, 2, 3])\n  print(\"hello\", list(local_y.values()))\n\nfoo()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "local_y": [
+              "REF", 
+              6
+            ], 
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x", 
+            "local_y"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ], 
+        "6": [
+          "DICT"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "local_y": [
+              "REF", 
+              6
+            ], 
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x", 
+            "local_y"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              7
+            ], 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "8": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "('hello', [set([1, 2, 3])])\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "local_y": [
+              "REF", 
+              6
+            ], 
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x", 
+            "local_y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              7
+            ], 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "8": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "('hello', [set([1, 2, 3])])\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/dict_test.golden_py3 b/v3/tests/backend-tests/dict_test.golden_py3
new file mode 100644
index 000000000..cb382cbf5
--- /dev/null
+++ b/v3/tests/backend-tests/dict_test.golden_py3
@@ -0,0 +1,730 @@
+{
+  "code": "x = {1 : 2}\nx[('tup', 'le')] = set([1, 2, 3])\n\ndef foo():\n  local_x = {1 : 2}\n  local_y = {}\n  local_y[('tup', 'le')] = set([1, 2, 3])\n  print(\"hello\", list(local_y.values()))\n\nfoo()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "local_y": [
+              "REF", 
+              6
+            ], 
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x", 
+            "local_y"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ], 
+        "6": [
+          "DICT"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "local_y": [
+              "REF", 
+              6
+            ], 
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x", 
+            "local_y"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              7
+            ], 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "8": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "hello [{1, 2, 3}]\n", 
+      "func_name": "foo", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "local_y": [
+              "REF", 
+              6
+            ], 
+            "local_x": [
+              "REF", 
+              5
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "foo", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "foo_f1", 
+          "ordered_varnames": [
+            "local_x", 
+            "local_y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ], 
+        "5": [
+          "DICT", 
+          [
+            1, 
+            2
+          ]
+        ], 
+        "6": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              7
+            ], 
+            [
+              "REF", 
+              8
+            ]
+          ]
+        ], 
+        "7": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "8": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "foo"
+      ], 
+      "stdout": "hello [{1, 2, 3}]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "foo": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            1, 
+            2
+          ], 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "tup", 
+          "le"
+        ], 
+        "3": [
+          "SET", 
+          1, 
+          2, 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "foo()", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/dict_test.txt b/v3/tests/backend-tests/dict_test.txt
new file mode 100644
index 000000000..15294a473
--- /dev/null
+++ b/v3/tests/backend-tests/dict_test.txt
@@ -0,0 +1,10 @@
+x = {1 : 2}
+x[('tup', 'le')] = set([1, 2, 3])
+
+def foo():
+  local_x = {1 : 2}
+  local_y = {}
+  local_y[('tup', 'le')] = set([1, 2, 3])
+  print("hello", list(local_y.values()))
+
+foo()
diff --git a/v3/tests/backend-tests/exec_test.golden b/v3/tests/backend-tests/exec_test.golden
new file mode 100644
index 000000000..a6a43ad21
--- /dev/null
+++ b/v3/tests/backend-tests/exec_test.golden
@@ -0,0 +1,67 @@
+{
+  "code": "exec(\"import os; os.system('echo security breach')\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ImportError: os not supported", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ImportError: os not supported", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/exec_test.golden_py3 b/v3/tests/backend-tests/exec_test.golden_py3
new file mode 100644
index 000000000..f8b44bb26
--- /dev/null
+++ b/v3/tests/backend-tests/exec_test.golden_py3
@@ -0,0 +1,26 @@
+{
+  "code": "exec(\"import os; os.system('echo security breach')\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "NameError: name 'exec' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/exec_test.txt b/v3/tests/backend-tests/exec_test.txt
new file mode 100644
index 000000000..7c8c740c7
--- /dev/null
+++ b/v3/tests/backend-tests/exec_test.txt
@@ -0,0 +1 @@
+exec("import os; os.system('echo security breach')")
diff --git a/v3/tests/backend-tests/func_exception.golden b/v3/tests/backend-tests/func_exception.golden
new file mode 100644
index 000000000..08975e74f
--- /dev/null
+++ b/v3/tests/backend-tests/func_exception.golden
@@ -0,0 +1,270 @@
+{
+  "code": "def g(x,y):\n    print(\"In g\")\n    ans = x/y\n    return ans\n \ng(5, 0)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5, 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "exception_msg": "ZeroDivisionError: integer division or modulo by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/func_exception.golden_py3 b/v3/tests/backend-tests/func_exception.golden_py3
new file mode 100644
index 000000000..537097da9
--- /dev/null
+++ b/v3/tests/backend-tests/func_exception.golden_py3
@@ -0,0 +1,270 @@
+{
+  "code": "def g(x,y):\n    print(\"In g\")\n    ans = x/y\n    return ans\n \ng(5, 0)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "exception"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 0, 
+            "x": 5, 
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "g_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "g"
+      ], 
+      "stdout": "In g\n", 
+      "exception_msg": "ZeroDivisionError: division by zero", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "g": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "g(x, y)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/func_exception.txt b/v3/tests/backend-tests/func_exception.txt
new file mode 100644
index 000000000..991a8253d
--- /dev/null
+++ b/v3/tests/backend-tests/func_exception.txt
@@ -0,0 +1,7 @@
+def g(x,y):
+    print("In g")
+    ans = x/y
+    return ans
+ 
+g(5, 0)
+
diff --git a/v3/tests/backend-tests/generator_test.golden b/v3/tests/backend-tests/generator_test.golden
new file mode 100644
index 000000000..845c6114f
--- /dev/null
+++ b/v3/tests/backend-tests/generator_test.golden
@@ -0,0 +1,100 @@
+{
+  "code": "x = (e for e in range(10))\ny = x\nz = (e for e in range(10))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ], 
+        "2": [
+          "generator", 
+          "<generator object <genexpr> at 0xADDR>"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/generator_test.golden_py3 b/v3/tests/backend-tests/generator_test.golden_py3
new file mode 100644
index 000000000..9a61882ef
--- /dev/null
+++ b/v3/tests/backend-tests/generator_test.golden_py3
@@ -0,0 +1,100 @@
+{
+  "code": "x = (e for e in range(10))\ny = x\nz = (e for e in range(10))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          1
+        ], 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "z": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "generator"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "generator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/generator_test.txt b/v3/tests/backend-tests/generator_test.txt
new file mode 100644
index 000000000..f17609e64
--- /dev/null
+++ b/v3/tests/backend-tests/generator_test.txt
@@ -0,0 +1,3 @@
+x = (e for e in range(10))
+y = x
+z = (e for e in range(10))
diff --git a/v3/tests/backend-tests/generator_use_test.golden b/v3/tests/backend-tests/generator_use_test.golden
new file mode 100644
index 000000000..34e21934f
--- /dev/null
+++ b/v3/tests/backend-tests/generator_use_test.golden
@@ -0,0 +1,10982 @@
+{
+  "code": "def gen_odds():\n  x = 1\n  while True:\n    yield x\n    x += 2\n\nfor i in gen_odds():\n  print(i)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 7, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 11, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 15, 
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 17, 
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 19, 
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 21, 
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 23, 
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": 25, 
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 27, 
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": 29, 
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 31, 
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "__return__": 33, 
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "__return__": 35, 
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "__return__": 37, 
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "__return__": 39, 
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "__return__": 41, 
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "__return__": 43, 
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "__return__": 45, 
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "__return__": 47, 
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "__return__": 49, 
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "__return__": 51, 
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "__return__": 53, 
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "__return__": 55, 
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "__return__": 57, 
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "__return__": 59, 
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "__return__": 61, 
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "__return__": 63, 
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "__return__": 65, 
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "__return__": 67, 
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "__return__": 69, 
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "__return__": 71, 
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "__return__": 73, 
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "__return__": 75, 
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "__return__": 77, 
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "__return__": 79, 
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "__return__": 81, 
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "__return__": 83, 
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 85
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 85
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/generator_use_test.golden_py3 b/v3/tests/backend-tests/generator_use_test.golden_py3
new file mode 100644
index 000000000..5bb2c43a8
--- /dev/null
+++ b/v3/tests/backend-tests/generator_use_test.golden_py3
@@ -0,0 +1,10772 @@
+{
+  "code": "def gen_odds():\n  x = 1\n  while True:\n    yield x\n    x += 2\n\nfor i in gen_odds():\n  print(i)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds"
+      ], 
+      "stdout": "", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f1", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 1, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 3, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 7, 
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 5, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 7
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 7, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 9
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 11, 
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 9, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 11
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 11, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 15, 
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f8", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 13, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 17, 
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 15, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 17
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 19, 
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f10", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 17, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 19
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 21, 
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 19, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 21
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 23, 
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f12", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 21, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 23
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": 25, 
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f13", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 23, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 25
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": 27, 
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f14", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 25, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 27
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": 29, 
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f15", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 27, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 29
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": 31, 
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f16", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 29, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 31
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 17, 
+          "encoded_locals": {
+            "__return__": 33, 
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f17", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 31, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 33
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 18, 
+          "encoded_locals": {
+            "__return__": 35, 
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f18", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 33, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 35
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 19, 
+          "encoded_locals": {
+            "__return__": 37, 
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f19", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 35, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 37
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 20, 
+          "encoded_locals": {
+            "__return__": 39, 
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f20", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 37, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 39
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 21, 
+          "encoded_locals": {
+            "__return__": 41, 
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f21", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 39, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 41
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 22, 
+          "encoded_locals": {
+            "__return__": 43, 
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f22", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 41, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 43
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 23, 
+          "encoded_locals": {
+            "__return__": 45, 
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f23", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 43, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 45
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 24, 
+          "encoded_locals": {
+            "__return__": 47, 
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f24", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 45, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 47
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 25, 
+          "encoded_locals": {
+            "__return__": 49, 
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f25", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 47, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 49
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 26, 
+          "encoded_locals": {
+            "__return__": 51, 
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f26", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 49, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 51
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 27, 
+          "encoded_locals": {
+            "__return__": 53, 
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f27", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 51, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 53
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 28, 
+          "encoded_locals": {
+            "__return__": 55, 
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f28", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 53, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 55
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 29, 
+          "encoded_locals": {
+            "__return__": 57, 
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f29", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 55, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 57
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 30, 
+          "encoded_locals": {
+            "__return__": 59, 
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f30", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 57, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 59
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 31, 
+          "encoded_locals": {
+            "__return__": 61, 
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f31", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 59, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 61
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 32, 
+          "encoded_locals": {
+            "__return__": 63, 
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f32", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 61, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 63
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 33, 
+          "encoded_locals": {
+            "__return__": 65, 
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f33", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 63, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 34, 
+          "encoded_locals": {
+            "__return__": 67, 
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f34", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 65, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 67
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 35, 
+          "encoded_locals": {
+            "__return__": 69, 
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f35", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 67, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 69
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 36, 
+          "encoded_locals": {
+            "__return__": 71, 
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f36", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 69, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 71
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 37, 
+          "encoded_locals": {
+            "__return__": 73, 
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f37", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 71, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 73
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 38, 
+          "encoded_locals": {
+            "__return__": 75, 
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f38", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 73, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 75
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 39, 
+          "encoded_locals": {
+            "__return__": 77, 
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f39", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 75, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 77
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 40, 
+          "encoded_locals": {
+            "__return__": 79, 
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f40", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 77, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 79
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 41, 
+          "encoded_locals": {
+            "__return__": 81, 
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f41", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 79, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 81
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 42, 
+          "encoded_locals": {
+            "__return__": 83, 
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f42", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 81, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 83
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "x": 85
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 43, 
+          "encoded_locals": {
+            "__return__": 85, 
+            "x": 85
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f43", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 83, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 85, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 85, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 44, 
+          "encoded_locals": {
+            "x": 85
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f44", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 85, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 44, 
+          "encoded_locals": {
+            "x": 85
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f44", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 85, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 44, 
+          "encoded_locals": {
+            "x": 87
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f44", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 85, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 44, 
+          "encoded_locals": {
+            "__return__": 87, 
+            "x": 87
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f44", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 85, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 87, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 87, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 45, 
+          "encoded_locals": {
+            "x": 87
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f45", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 87, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 45, 
+          "encoded_locals": {
+            "x": 87
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f45", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 87, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 45, 
+          "encoded_locals": {
+            "x": 89
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f45", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 87, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 45, 
+          "encoded_locals": {
+            "__return__": 89, 
+            "x": 89
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f45", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 87, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 89, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 89, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 46, 
+          "encoded_locals": {
+            "x": 89
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f46", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 89, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 46, 
+          "encoded_locals": {
+            "x": 89
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f46", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 89, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 46, 
+          "encoded_locals": {
+            "x": 91
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f46", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 89, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 46, 
+          "encoded_locals": {
+            "__return__": 91, 
+            "x": 91
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f46", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 89, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 91, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 91, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 47, 
+          "encoded_locals": {
+            "x": 91
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f47", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 91, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 47, 
+          "encoded_locals": {
+            "x": 91
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f47", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 91, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 47, 
+          "encoded_locals": {
+            "x": 93
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f47", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 91, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 47, 
+          "encoded_locals": {
+            "__return__": 93, 
+            "x": 93
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f47", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 91, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 93, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 93, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 48, 
+          "encoded_locals": {
+            "x": 93
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f48", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 93, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 48, 
+          "encoded_locals": {
+            "x": 93
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f48", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 93, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 48, 
+          "encoded_locals": {
+            "x": 95
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f48", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 93, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 48, 
+          "encoded_locals": {
+            "__return__": 95, 
+            "x": 95
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f48", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 93, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 95, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 95, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 49, 
+          "encoded_locals": {
+            "x": 95
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f49", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 95, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 49, 
+          "encoded_locals": {
+            "x": 95
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f49", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 95, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 49, 
+          "encoded_locals": {
+            "x": 97
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f49", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 95, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 49, 
+          "encoded_locals": {
+            "__return__": 97, 
+            "x": 97
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f49", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 95, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 97, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n97\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 97, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n97\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 50, 
+          "encoded_locals": {
+            "x": 97
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f50", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 97, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n97\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 50, 
+          "encoded_locals": {
+            "x": 97
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f50", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 97, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "gen_odds", 
+        "i"
+      ], 
+      "stdout": "1\n3\n5\n7\n9\n11\n13\n15\n17\n19\n21\n23\n25\n27\n29\n31\n33\n35\n37\n39\n41\n43\n45\n47\n49\n51\n53\n55\n57\n59\n61\n63\n65\n67\n69\n71\n73\n75\n77\n79\n81\n83\n85\n87\n89\n91\n93\n95\n97\n", 
+      "func_name": "gen_odds", 
+      "stack_to_render": [
+        {
+          "frame_id": 50, 
+          "encoded_locals": {
+            "x": 99
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "gen_odds", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "gen_odds_f50", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "i": 97, 
+        "gen_odds": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "gen_odds()", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/generator_use_test.txt b/v3/tests/backend-tests/generator_use_test.txt
new file mode 100644
index 000000000..d4aee1010
--- /dev/null
+++ b/v3/tests/backend-tests/generator_use_test.txt
@@ -0,0 +1,9 @@
+def gen_odds():
+  x = 1
+  while True:
+    yield x
+    x += 2
+
+for i in gen_odds():
+  print(i)
+
diff --git a/v3/tests/backend-tests/import_error.golden b/v3/tests/backend-tests/import_error.golden
new file mode 100644
index 000000000..96e9fa679
--- /dev/null
+++ b/v3/tests/backend-tests/import_error.golden
@@ -0,0 +1,26 @@
+{
+  "code": "# should NOT allow for any imports\nimport os\n\nos.system(\"echo security breach\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ImportError: os not supported", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/import_error.golden_py3 b/v3/tests/backend-tests/import_error.golden_py3
new file mode 100644
index 000000000..96e9fa679
--- /dev/null
+++ b/v3/tests/backend-tests/import_error.golden_py3
@@ -0,0 +1,26 @@
+{
+  "code": "# should NOT allow for any imports\nimport os\n\nos.system(\"echo security breach\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "ImportError: os not supported", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/import_error.txt b/v3/tests/backend-tests/import_error.txt
new file mode 100644
index 000000000..028a74e54
--- /dev/null
+++ b/v3/tests/backend-tests/import_error.txt
@@ -0,0 +1,4 @@
+# should NOT allow for any imports
+import os
+
+os.system("echo security breach")
diff --git a/v3/tests/backend-tests/inf-nan.golden b/v3/tests/backend-tests/inf-nan.golden
new file mode 100644
index 000000000..0ea44ee8b
--- /dev/null
+++ b/v3/tests/backend-tests/inf-nan.golden
@@ -0,0 +1,81 @@
+{
+  "code": "x = float('inf')\ny = float('-inf')\nz = float('nan')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "SPECIAL_FLOAT", 
+          "Infinity"
+        ]
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "SPECIAL_FLOAT", 
+          "-Infinity"
+        ], 
+        "x": [
+          "SPECIAL_FLOAT", 
+          "Infinity"
+        ]
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "SPECIAL_FLOAT", 
+          "-Infinity"
+        ], 
+        "x": [
+          "SPECIAL_FLOAT", 
+          "Infinity"
+        ], 
+        "z": [
+          "SPECIAL_FLOAT", 
+          "NaN"
+        ]
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/inf-nan.golden_py3 b/v3/tests/backend-tests/inf-nan.golden_py3
new file mode 100644
index 000000000..0ea44ee8b
--- /dev/null
+++ b/v3/tests/backend-tests/inf-nan.golden_py3
@@ -0,0 +1,81 @@
+{
+  "code": "x = float('inf')\ny = float('-inf')\nz = float('nan')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "SPECIAL_FLOAT", 
+          "Infinity"
+        ]
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "SPECIAL_FLOAT", 
+          "-Infinity"
+        ], 
+        "x": [
+          "SPECIAL_FLOAT", 
+          "Infinity"
+        ]
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "SPECIAL_FLOAT", 
+          "-Infinity"
+        ], 
+        "x": [
+          "SPECIAL_FLOAT", 
+          "Infinity"
+        ], 
+        "z": [
+          "SPECIAL_FLOAT", 
+          "NaN"
+        ]
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/inf-nan.txt b/v3/tests/backend-tests/inf-nan.txt
new file mode 100644
index 000000000..ff814ed49
--- /dev/null
+++ b/v3/tests/backend-tests/inf-nan.txt
@@ -0,0 +1,3 @@
+x = float('inf')
+y = float('-inf')
+z = float('nan')
diff --git a/v3/tests/backend-tests/infinite-loop-try-except.golden_py3 b/v3/tests/backend-tests/infinite-loop-try-except.golden_py3
new file mode 100644
index 000000000..27a0ed160
--- /dev/null
+++ b/v3/tests/backend-tests/infinite-loop-try-except.golden_py3
@@ -0,0 +1,3009 @@
+{
+  "code": "# a try/except inside of an infinite loop\nwhile True:\n    try:\n        print(\"good\")\n    except:\n        print(\"bad\")\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "good\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\ngood\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/infinite-loop-try-except.txt b/v3/tests/backend-tests/infinite-loop-try-except.txt
new file mode 100644
index 000000000..a205ae5bb
--- /dev/null
+++ b/v3/tests/backend-tests/infinite-loop-try-except.txt
@@ -0,0 +1,7 @@
+# a try/except inside of an infinite loop
+while True:
+    try:
+        print("good")
+    except:
+        print("bad")
+
diff --git a/v3/tests/backend-tests/infinite_loop.golden b/v3/tests/backend-tests/infinite_loop.golden
new file mode 100644
index 000000000..217546644
--- /dev/null
+++ b/v3/tests/backend-tests/infinite_loop.golden
@@ -0,0 +1,7545 @@
+{
+  "code": "# Fibonacci!!!\n\narr = [1, 1]\n\nprint(arr[0])\n\nwhile True:\n  print(arr[-1])\n  tmp = sum(arr)\n  arr.append(tmp)\n  del arr[0]\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1, 
+          2
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          5
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5, 
+          8
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8, 
+          13
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13, 
+          21
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21, 
+          34
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34, 
+          55
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55, 
+          89
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89, 
+          144
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144, 
+          233
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233, 
+          377
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377, 
+          610
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610, 
+          987
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/infinite_loop.golden_py3 b/v3/tests/backend-tests/infinite_loop.golden_py3
new file mode 100644
index 000000000..ed5d62820
--- /dev/null
+++ b/v3/tests/backend-tests/infinite_loop.golden_py3
@@ -0,0 +1,7560 @@
+{
+  "code": "# Fibonacci!!!\n\narr = [1, 1]\n\nprint(arr[0])\n\nwhile True:\n  print(arr[-1])\n  tmp = sum(arr)\n  arr.append(tmp)\n  del arr[0]\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          1, 
+          2
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2, 
+          3, 
+          5
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3, 
+          5, 
+          8
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 8, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5, 
+          8, 
+          13
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 13, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          8, 
+          13, 
+          21
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 21, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          13, 
+          21, 
+          34
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 34, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          21, 
+          34, 
+          55
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 55, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          34, 
+          55, 
+          89
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 89, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          55, 
+          89, 
+          144
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 144, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          89, 
+          144, 
+          233
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 233, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          144, 
+          233, 
+          377
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 377, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          233, 
+          377, 
+          610
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 610, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          377, 
+          610, 
+          987
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 987, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          610, 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1597, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          987, 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2584, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1597, 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4181, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2584, 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6765, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4181, 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10946, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6765, 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17711, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10946, 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 28657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17711, 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 46368, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          28657, 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 75025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          46368, 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 121393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          75025, 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 196418, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          121393, 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 317811, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          196418, 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 514229, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          317811, 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 832040, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          514229, 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1346269, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          832040, 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2178309, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1346269, 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3524578, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2178309, 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 5702887, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          3524578, 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 9227465, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          5702887, 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 14930352, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          9227465, 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 24157817, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          14930352, 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 39088169, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          24157817, 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 63245986, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          39088169, 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 102334155, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          63245986, 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 165580141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          102334155, 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 267914296, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          165580141, 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 433494437, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          267914296, 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 701408733, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          433494437, 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1134903170, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          701408733, 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1836311903, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1134903170, 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2971215073, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1836311903, 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4807526976, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2971215073, 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 7778742049, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4807526976, 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 12586269025, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          7778742049, 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 20365011074, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          12586269025, 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 32951280099, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          20365011074, 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 53316291173, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          32951280099, 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 86267571272, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          53316291173, 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 139583862445, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          86267571272, 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 225851433717, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          139583862445, 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 365435296162, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          225851433717, 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 591286729879, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          365435296162, 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 956722026041, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          591286729879, 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1548008755920, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          956722026041, 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2504730781961, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1548008755920, 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 4052739537881, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2504730781961, 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 6557470319842, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          4052739537881, 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 10610209857723, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          6557470319842, 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 17167680177565, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          10610209857723, 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 27777890035288, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          17167680177565, 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 44945570212853, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          27777890035288, 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 72723460248141, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          44945570212853, 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 117669030460994, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          72723460248141, 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 190392490709135, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          117669030460994, 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 308061521170129, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          190392490709135, 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 498454011879264, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          308061521170129, 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 806515533049393, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          498454011879264, 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 1304969544928657, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          806515533049393, 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 2111485077978050, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3416454622906707, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3416454622906707, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1304969544928657, 
+          2111485077978050, 
+          3416454622906707
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "arr", 
+        "tmp"
+      ], 
+      "stdout": "1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n4052739537881\n6557470319842\n10610209857723\n17167680177565\n27777890035288\n44945570212853\n72723460248141\n117669030460994\n190392490709135\n308061521170129\n498454011879264\n806515533049393\n1304969544928657\n2111485077978050\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "tmp": 3416454622906707, 
+        "arr": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          2111485077978050, 
+          3416454622906707
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/infinite_loop.txt b/v3/tests/backend-tests/infinite_loop.txt
new file mode 100644
index 000000000..b480914bb
--- /dev/null
+++ b/v3/tests/backend-tests/infinite_loop.txt
@@ -0,0 +1,12 @@
+# Fibonacci!!!
+
+arr = [1, 1]
+
+print(arr[0])
+
+while True:
+  print(arr[-1])
+  tmp = sum(arr)
+  arr.append(tmp)
+  del arr[0]
+
diff --git a/v3/tests/backend-tests/infinite_loop_one_liner.golden b/v3/tests/backend-tests/infinite_loop_one_liner.golden
new file mode 100644
index 000000000..e28f84304
--- /dev/null
+++ b/v3/tests/backend-tests/infinite_loop_one_liner.golden
@@ -0,0 +1,3009 @@
+{
+  "code": "while 1:\n  print(\"hahahaha\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/infinite_loop_one_liner.golden_py3 b/v3/tests/backend-tests/infinite_loop_one_liner.golden_py3
new file mode 100644
index 000000000..e28f84304
--- /dev/null
+++ b/v3/tests/backend-tests/infinite_loop_one_liner.golden_py3
@@ -0,0 +1,3009 @@
+{
+  "code": "while 1:\n  print(\"hahahaha\")\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "hahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\nhahahaha\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)", 
+      "event": "instruction_limit_reached"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/infinite_loop_one_liner.txt b/v3/tests/backend-tests/infinite_loop_one_liner.txt
new file mode 100644
index 000000000..6bc80597f
--- /dev/null
+++ b/v3/tests/backend-tests/infinite_loop_one_liner.txt
@@ -0,0 +1,2 @@
+while 1:
+  print("hahahaha")
diff --git a/v3/tests/backend-tests/john-compose.golden b/v3/tests/backend-tests/john-compose.golden
new file mode 100644
index 000000000..e0c62d35f
--- /dev/null
+++ b/v3/tests/backend-tests/john-compose.golden
@@ -0,0 +1,1262 @@
+{
+  "code": "def compose1(f, g):\n  return lambda x: f(g(x))\n\nadd_one_and_square = compose1(lambda x: x * x, lambda x: x + 1)\nresult = add_one_and_square(12)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "compose1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "compose1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1", 
+          "ordered_varnames": [
+            "f", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "compose1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "compose1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1", 
+          "ordered_varnames": [
+            "f", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "compose1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 169, 
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 169, 
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square", 
+        "result"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ], 
+        "result": 169
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-compose.golden_py3 b/v3/tests/backend-tests/john-compose.golden_py3
new file mode 100644
index 000000000..e0c62d35f
--- /dev/null
+++ b/v3/tests/backend-tests/john-compose.golden_py3
@@ -0,0 +1,1262 @@
+{
+  "code": "def compose1(f, g):\n  return lambda x: f(g(x))\n\nadd_one_and_square = compose1(lambda x: x * x, lambda x: x + 1)\nresult = add_one_and_square(12)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "compose1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "compose1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1", 
+          "ordered_varnames": [
+            "f", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "compose1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "compose1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1", 
+          "ordered_varnames": [
+            "f", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1"
+      ], 
+      "stdout": "", 
+      "func_name": "compose1", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 13, 
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 12
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 169, 
+            "x": 13
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 4>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 4>_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 169, 
+            "x": 12
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 2>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 2>_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "compose1", 
+        "add_one_and_square", 
+        "result"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "g": [
+              "REF", 
+              2
+            ], 
+            "f": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "compose1", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "compose1_f1_p_z", 
+          "ordered_varnames": [
+            "f", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "compose1": [
+          "REF", 
+          1
+        ], 
+        "add_one_and_square": [
+          "REF", 
+          4
+        ], 
+        "result": 169
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "compose1(f, g)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 4>", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 2>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-compose.txt b/v3/tests/backend-tests/john-compose.txt
new file mode 100644
index 000000000..4b8767912
--- /dev/null
+++ b/v3/tests/backend-tests/john-compose.txt
@@ -0,0 +1,5 @@
+def compose1(f, g):
+  return lambda x: f(g(x))
+
+add_one_and_square = compose1(lambda x: x * x, lambda x: x + 1)
+result = add_one_and_square(12)
diff --git a/v3/tests/backend-tests/john-import-test.golden b/v3/tests/backend-tests/john-import-test.golden
new file mode 100644
index 000000000..add78fcb4
--- /dev/null
+++ b/v3/tests/backend-tests/john-import-test.golden
@@ -0,0 +1,282 @@
+{
+  "code": "import math\nimport operator\nimport string\nimport collections\nimport re\nimport json\n\n# causes some errors in regression tests, but fine in GAE ...\n#import random\n#import datetime\n#import functools\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "math"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "math"
+        ], 
+        "2": [
+          "module", 
+          "operator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "string": [
+          "REF", 
+          3
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "math"
+        ], 
+        "2": [
+          "module", 
+          "operator"
+        ], 
+        "3": [
+          "module", 
+          "string"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string", 
+        "collections"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "collections": [
+          "REF", 
+          4
+        ], 
+        "string": [
+          "REF", 
+          3
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "math"
+        ], 
+        "2": [
+          "module", 
+          "operator"
+        ], 
+        "3": [
+          "module", 
+          "string"
+        ], 
+        "4": [
+          "module", 
+          "collections"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string", 
+        "collections", 
+        "re"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "re": [
+          "REF", 
+          5
+        ], 
+        "collections": [
+          "REF", 
+          4
+        ], 
+        "string": [
+          "REF", 
+          3
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "math"
+        ], 
+        "2": [
+          "module", 
+          "operator"
+        ], 
+        "3": [
+          "module", 
+          "string"
+        ], 
+        "4": [
+          "module", 
+          "collections"
+        ], 
+        "5": [
+          "module", 
+          "re"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string", 
+        "collections", 
+        "re", 
+        "json"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "string": [
+          "REF", 
+          3
+        ], 
+        "re": [
+          "REF", 
+          5
+        ], 
+        "json": [
+          "REF", 
+          6
+        ], 
+        "collections": [
+          "REF", 
+          4
+        ], 
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "math"
+        ], 
+        "2": [
+          "module", 
+          "operator"
+        ], 
+        "3": [
+          "module", 
+          "string"
+        ], 
+        "4": [
+          "module", 
+          "collections"
+        ], 
+        "5": [
+          "module", 
+          "re"
+        ], 
+        "6": [
+          "module", 
+          "json"
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-import-test.golden_py3 b/v3/tests/backend-tests/john-import-test.golden_py3
new file mode 100644
index 000000000..332fa4b5e
--- /dev/null
+++ b/v3/tests/backend-tests/john-import-test.golden_py3
@@ -0,0 +1,282 @@
+{
+  "code": "import math\nimport operator\nimport string\nimport collections\nimport re\nimport json\n\n# causes some errors in regression tests, but fine in GAE ...\n#import random\n#import datetime\n#import functools\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "string": [
+          "REF", 
+          3
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string", 
+        "collections"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "collections": [
+          "REF", 
+          4
+        ], 
+        "string": [
+          "REF", 
+          3
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string", 
+        "collections", 
+        "re"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "re": [
+          "REF", 
+          5
+        ], 
+        "collections": [
+          "REF", 
+          4
+        ], 
+        "string": [
+          "REF", 
+          3
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "5": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "math", 
+        "operator", 
+        "string", 
+        "collections", 
+        "re", 
+        "json"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "string": [
+          "REF", 
+          3
+        ], 
+        "re": [
+          "REF", 
+          5
+        ], 
+        "json": [
+          "REF", 
+          6
+        ], 
+        "collections": [
+          "REF", 
+          4
+        ], 
+        "operator": [
+          "REF", 
+          2
+        ], 
+        "math": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "4": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "5": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "6": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-import-test.txt b/v3/tests/backend-tests/john-import-test.txt
new file mode 100644
index 000000000..fcb15f43f
--- /dev/null
+++ b/v3/tests/backend-tests/john-import-test.txt
@@ -0,0 +1,11 @@
+import math
+import operator
+import string
+import collections
+import re
+import json
+
+# causes some errors in regression tests, but fine in GAE ...
+#import random
+#import datetime
+#import functools
diff --git a/v3/tests/backend-tests/john-lambda-lambda-mini.golden b/v3/tests/backend-tests/john-lambda-lambda-mini.golden
new file mode 100644
index 000000000..3f5b3cc1c
--- /dev/null
+++ b/v3/tests/backend-tests/john-lambda-lambda-mini.golden
@@ -0,0 +1,817 @@
+{
+  "code": "def a(b):\n    a = b(3)\n    a(100)\n\na(lambda a: (lambda b: a))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "b": 100
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 5>_f3", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "b": 100
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 5>_f3", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "b": 100
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 5>_f3", 
+          "ordered_varnames": [
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-lambda-lambda-mini.golden_py3 b/v3/tests/backend-tests/john-lambda-lambda-mini.golden_py3
new file mode 100644
index 000000000..3f5b3cc1c
--- /dev/null
+++ b/v3/tests/backend-tests/john-lambda-lambda-mini.golden_py3
@@ -0,0 +1,817 @@
+{
+  "code": "def a(b):\n    a = b(3)\n    a(100)\n\na(lambda a: (lambda b: a))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "b": 100
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 5>_f3", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "b": 100
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 5>_f3", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "b": 100
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2
+          ], 
+          "unique_hash": "<lambda> <line 5>_f3", 
+          "ordered_varnames": [
+            "b", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              3
+            ], 
+            "__return__": null, 
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-lambda-lambda-mini.txt b/v3/tests/backend-tests/john-lambda-lambda-mini.txt
new file mode 100644
index 000000000..bd8f4edc3
--- /dev/null
+++ b/v3/tests/backend-tests/john-lambda-lambda-mini.txt
@@ -0,0 +1,5 @@
+def a(b):
+    a = b(3)
+    a(100)
+
+a(lambda a: (lambda b: a))
diff --git a/v3/tests/backend-tests/john-lambda-lambda.golden b/v3/tests/backend-tests/john-lambda-lambda.golden
new file mode 100644
index 000000000..724b87af2
--- /dev/null
+++ b/v3/tests/backend-tests/john-lambda-lambda.golden
@@ -0,0 +1,472 @@
+{
+  "code": "# another gem from john denero ...\ndef a(b):\n    a, b = b(3)\n\na(lambda a: (lambda b: a, a))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            4
+          ], 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            4
+          ], 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            4
+          ], 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-lambda-lambda.golden_py3 b/v3/tests/backend-tests/john-lambda-lambda.golden_py3
new file mode 100644
index 000000000..724b87af2
--- /dev/null
+++ b/v3/tests/backend-tests/john-lambda-lambda.golden_py3
@@ -0,0 +1,472 @@
+{
+  "code": "# another gem from john denero ...\ndef a(b):\n    a, b = b(3)\n\na(lambda a: (lambda b: a, a))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2", 
+          "ordered_varnames": [
+            "a"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "b": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(a) <line 5>", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            4
+          ], 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "a", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": [
+              "REF", 
+              4
+            ], 
+            "__return__": null, 
+            "b": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "a", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "a_f1", 
+          "ordered_varnames": [
+            "b", 
+            "a", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            4
+          ], 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 3, 
+            "__return__": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "<lambda> <line 5>", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 5>_f2_p_z", 
+          "ordered_varnames": [
+            "a", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "a(b)", 
+          null
+        ], 
+        "3": [
+          "TUPLE", 
+          [
+            "REF", 
+            4
+          ], 
+          3
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(b) <line 5>", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-lambda-lambda.txt b/v3/tests/backend-tests/john-lambda-lambda.txt
new file mode 100644
index 000000000..61a0d2fb5
--- /dev/null
+++ b/v3/tests/backend-tests/john-lambda-lambda.txt
@@ -0,0 +1,5 @@
+# another gem from john denero ...
+def a(b):
+    a, b = b(3)
+
+a(lambda a: (lambda b: a, a))
diff --git a/v3/tests/backend-tests/john-triple-nesting.golden b/v3/tests/backend-tests/john-triple-nesting.golden
new file mode 100644
index 000000000..61283f9c5
--- /dev/null
+++ b/v3/tests/backend-tests/john-triple-nesting.golden
@@ -0,0 +1,11 @@
+{
+  "code": "# test in Python 3\ndef f(t):\n    def g(t):\n        def h():\n            nonlocal t\n            t += 1\n        return h, lambda: t\n    h, gt = g(0)\n    return h, gt, lambda: t\nh, gt, ft = f(0)\nft(), gt()\nh()\nft(), gt()\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 5)", 
+      "line": 5, 
+      "event": "uncaught_exception", 
+      "offset": 22
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-triple-nesting.golden_py3 b/v3/tests/backend-tests/john-triple-nesting.golden_py3
new file mode 100644
index 000000000..9d1bd8c9f
--- /dev/null
+++ b/v3/tests/backend-tests/john-triple-nesting.golden_py3
@@ -0,0 +1,3726 @@
+{
+  "code": "# test in Python 3\ndef f(t):\n    def g(t):\n        def h():\n            nonlocal t\n            t += 1\n        return h, lambda: t\n    h, gt = g(0)\n    return h, gt, lambda: t\nh, gt, ft = f(0)\nft(), gt()\nh()\nft(), gt()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "t"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p", 
+          "ordered_varnames": [
+            "t", 
+            "h"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 9>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 9>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 9>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 9>_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 9>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 9>_f3", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "h", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "h", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "h_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "h", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "h", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "h_f5", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "h", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "h", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "h_f5", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 9>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 9>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 9>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 9>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 9>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 9>_f6", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 7>_f7", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 7>_f7", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            2, 
+            1
+          ], 
+          "unique_hash": "<lambda> <line 7>_f7", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "h", 
+        "gt", 
+        "ft"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "gt": [
+              "REF", 
+              5
+            ], 
+            "t": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "g", 
+            "h", 
+            "gt", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "h": [
+              "REF", 
+              3
+            ], 
+            "t": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "g", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2_p_z", 
+          "ordered_varnames": [
+            "t", 
+            "h", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "h": [
+          "REF", 
+          3
+        ], 
+        "gt": [
+          "REF", 
+          5
+        ], 
+        "ft": [
+          "REF", 
+          7
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(t)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(t)", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "h()", 
+          2
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          2
+        ], 
+        "6": [
+          "TUPLE", 
+          [
+            "REF", 
+            3
+          ], 
+          [
+            "REF", 
+            5
+          ], 
+          [
+            "REF", 
+            7
+          ]
+        ], 
+        "7": [
+          "FUNCTION", 
+          "<lambda>() <line 9>", 
+          1
+        ]
+      }, 
+      "line": 13, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/john-triple-nesting.txt b/v3/tests/backend-tests/john-triple-nesting.txt
new file mode 100644
index 000000000..60a949231
--- /dev/null
+++ b/v3/tests/backend-tests/john-triple-nesting.txt
@@ -0,0 +1,13 @@
+# test in Python 3
+def f(t):
+    def g(t):
+        def h():
+            nonlocal t
+            t += 1
+        return h, lambda: t
+    h, gt = g(0)
+    return h, gt, lambda: t
+h, gt, ft = f(0)
+ft(), gt()
+h()
+ft(), gt()
diff --git a/v3/tests/backend-tests/key-error.golden b/v3/tests/backend-tests/key-error.golden
new file mode 100644
index 000000000..9cd1f5980
--- /dev/null
+++ b/v3/tests/backend-tests/key-error.golden
@@ -0,0 +1,58 @@
+{
+  "code": "x = {}\nx['jane']\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "exception_msg": "KeyError: ('jane',)", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 2, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/key-error.golden_py3 b/v3/tests/backend-tests/key-error.golden_py3
new file mode 100644
index 000000000..9cd1f5980
--- /dev/null
+++ b/v3/tests/backend-tests/key-error.golden_py3
@@ -0,0 +1,58 @@
+{
+  "code": "x = {}\nx['jane']\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "exception_msg": "KeyError: ('jane',)", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 2, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/key-error.txt b/v3/tests/backend-tests/key-error.txt
new file mode 100644
index 000000000..1f5589a65
--- /dev/null
+++ b/v3/tests/backend-tests/key-error.txt
@@ -0,0 +1,2 @@
+x = {}
+x['jane']
diff --git a/v3/tests/backend-tests/lambda_1.golden b/v3/tests/backend-tests/lambda_1.golden
new file mode 100644
index 000000000..a4466ec86
--- /dev/null
+++ b/v3/tests/backend-tests/lambda_1.golden
@@ -0,0 +1,5493 @@
+{
+  "code": "def summation(low, high, f, next):\n  s = 0\n  x = low\n  while x <= high:\n    s = s + f(x)\n    x = next(x)\n  return s\n\ndef sumsquares(low, high):\n  return summation(low, high, lambda x: x**2, lambda x: x+1)\n\nprint(sumsquares(1, 5))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 5, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 5, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 5, 
+            "s": 0, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f8", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 16, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f10", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 25, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f12", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "__return__": 55, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "__return__": 55, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "__return__": 55, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p_z", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/lambda_1.golden_py3 b/v3/tests/backend-tests/lambda_1.golden_py3
new file mode 100644
index 000000000..a4466ec86
--- /dev/null
+++ b/v3/tests/backend-tests/lambda_1.golden_py3
@@ -0,0 +1,5493 @@
+{
+  "code": "def summation(low, high, f, next):\n  s = 0\n  x = low\n  while x <= high:\n    s = s + f(x)\n    x = next(x)\n  return s\n\ndef sumsquares(low, high):\n  return summation(low, high, lambda x: x**2, lambda x: x+1)\n\nprint(sumsquares(1, 5))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 5, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 5, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "high": 5, 
+            "s": 0, 
+            "f": [
+              "REF", 
+              4
+            ], 
+            "low": 1, 
+            "next": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 0, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f4", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 1, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f6", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f6", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 5, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": 9, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f7", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f8", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 4, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f8", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 14, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": 16, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f10", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f10", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f11", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 30, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": 25, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f11", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f12", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "x": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 10>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 10>_f12", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "summation", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              4
+            ], 
+            "next": [
+              "REF", 
+              3
+            ], 
+            "high": 5, 
+            "s": 55, 
+            "low": 1, 
+            "__return__": 55, 
+            "x": 6
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "summation", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "summation_f2", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "f", 
+            "next", 
+            "s", 
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ], 
+        "4": [
+          "FUNCTION", 
+          "<lambda>(x) <line 10>", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "", 
+      "func_name": "sumsquares", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "__return__": 55, 
+            "low": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "summation", 
+        "sumsquares"
+      ], 
+      "stdout": "55\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "high": 5, 
+            "__return__": 55, 
+            "low": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "sumsquares", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "sumsquares_f1_p_z", 
+          "ordered_varnames": [
+            "low", 
+            "high", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "summation": [
+          "REF", 
+          1
+        ], 
+        "sumsquares": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "summation(low, high, f, next)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "sumsquares(low, high)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/lambda_1.txt b/v3/tests/backend-tests/lambda_1.txt
new file mode 100644
index 000000000..da6d717e0
--- /dev/null
+++ b/v3/tests/backend-tests/lambda_1.txt
@@ -0,0 +1,12 @@
+def summation(low, high, f, next):
+  s = 0
+  x = low
+  while x <= high:
+    s = s + f(x)
+    x = next(x)
+  return s
+
+def sumsquares(low, high):
+  return summation(low, high, lambda x: x**2, lambda x: x+1)
+
+print(sumsquares(1, 5))
diff --git a/v3/tests/backend-tests/ling-scheme-1.golden b/v3/tests/backend-tests/ling-scheme-1.golden
new file mode 100644
index 000000000..48cff696b
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-1.golden
@@ -0,0 +1,4020 @@
+{
+  "code": "def repeat(f, n):\n  if n == 0:\n    return []\n  else:\n    return [f()] + repeat(f, n - 1)\n\nrepeat(lambda : 5, 5)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f6", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f8", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f10", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f10", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f10", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          5, 
+          5, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              7
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "7": [
+          "LIST", 
+          5, 
+          5, 
+          5, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "LIST", 
+          5, 
+          5, 
+          5, 
+          5, 
+          5
+        ], 
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ling-scheme-1.golden_py3 b/v3/tests/backend-tests/ling-scheme-1.golden_py3
new file mode 100644
index 000000000..48cff696b
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-1.golden_py3
@@ -0,0 +1,4020 @@
+{
+  "code": "def repeat(f, n):\n  if n == 0:\n    return []\n  else:\n    return [f()] + repeat(f, n - 1)\n\nrepeat(lambda : 5, 5)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f6", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f6", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f8", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f8", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f10", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f10", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 7>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 7>_f10", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f11", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f9", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f7", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "5": [
+          "LIST", 
+          5, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              6
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f5", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          5, 
+          5, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              7
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f3", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ], 
+        "7": [
+          "LIST", 
+          5, 
+          5, 
+          5, 
+          5
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "repeat", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "repeat", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "repeat_f1", 
+          "ordered_varnames": [
+            "f", 
+            "n", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "8": [
+          "LIST", 
+          5, 
+          5, 
+          5, 
+          5, 
+          5
+        ], 
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>() <line 7>", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "repeat"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "repeat": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "repeat(f, n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ling-scheme-1.txt b/v3/tests/backend-tests/ling-scheme-1.txt
new file mode 100644
index 000000000..254102edc
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-1.txt
@@ -0,0 +1,7 @@
+def repeat(f, n):
+  if n == 0:
+    return []
+  else:
+    return [f()] + repeat(f, n - 1)
+
+repeat(lambda : 5, 5)
diff --git a/v3/tests/backend-tests/ling-scheme-2.golden b/v3/tests/backend-tests/ling-scheme-2.golden
new file mode 100644
index 000000000..add7f461f
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-2.golden
@@ -0,0 +1,3788 @@
+{
+  "code": "def iota(n):\n  def loop(acc, k):\n    if k == n:\n      return list(reversed(acc))\n    else:\n      return loop([k] + acc, k + 1)\n  return loop([], 0)\n\nresult = iota(5)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota", 
+        "result"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p_z", 
+          "ordered_varnames": [
+            "n", 
+            "loop", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "result": [
+          "REF", 
+          9
+        ], 
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ling-scheme-2.golden_py3 b/v3/tests/backend-tests/ling-scheme-2.golden_py3
new file mode 100644
index 000000000..add7f461f
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-2.golden_py3
@@ -0,0 +1,3788 @@
+{
+  "code": "def iota(n):\n  def loop(acc, k):\n    if k == n:\n      return list(reversed(acc))\n    else:\n      return loop([k] + acc, k + 1)\n  return loop([], 0)\n\nresult = iota(5)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1", 
+          "ordered_varnames": [
+            "n"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              8
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f7", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "8": [
+          "LIST", 
+          4, 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              7
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 4
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f6", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "7": [
+          "LIST", 
+          3, 
+          2, 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              6
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f5", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "6": [
+          "LIST", 
+          2, 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              5
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f4", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "5": [
+          "LIST", 
+          1, 
+          0
+        ], 
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              4
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f3", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "4": [
+          "LIST", 
+          0
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "loop", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "acc": [
+              "REF", 
+              3
+            ], 
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "loop", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "loop_f2", 
+          "ordered_varnames": [
+            "acc", 
+            "k", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "3": [
+          "LIST"
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota"
+      ], 
+      "stdout": "", 
+      "func_name": "iota", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p", 
+          "ordered_varnames": [
+            "n", 
+            "loop", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "iota", 
+        "result"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "loop": [
+              "REF", 
+              2
+            ], 
+            "n": 5
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "iota", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "iota_f1_p_z", 
+          "ordered_varnames": [
+            "n", 
+            "loop", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "result": [
+          "REF", 
+          9
+        ], 
+        "iota": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "9": [
+          "LIST", 
+          0, 
+          1, 
+          2, 
+          3, 
+          4
+        ], 
+        "2": [
+          "FUNCTION", 
+          "loop(acc, k)", 
+          1
+        ], 
+        "1": [
+          "FUNCTION", 
+          "iota(n)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ling-scheme-2.txt b/v3/tests/backend-tests/ling-scheme-2.txt
new file mode 100644
index 000000000..b94897002
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-2.txt
@@ -0,0 +1,10 @@
+def iota(n):
+  def loop(acc, k):
+    if k == n:
+      return list(reversed(acc))
+    else:
+      return loop([k] + acc, k + 1)
+  return loop([], 0)
+
+result = iota(5)
+
diff --git a/v3/tests/backend-tests/ling-scheme-3.golden b/v3/tests/backend-tests/ling-scheme-3.golden
new file mode 100644
index 000000000..4047de3db
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-3.golden
@@ -0,0 +1,9009 @@
+{
+  "code": "def map(f, xs):\n  if xs == []:\n    return []\n  else:\n    return [f(xs[0])] + list(map(f, xs[1:]))\n\ndef append(xs, ys):\n  if xs == []:\n    return ys\n  else:\n    return [xs[0]] + append(xs[1:], ys)\n\ndef pairs(xs):\n  if xs == []:\n    return []\n  elif xs[1:] == []:\n    return []\n  else:\n    return append(map(lambda x: [xs[0], x], xs[1:]), pairs(xs[1:]))\n\nresult = pairs([1, 2, 3])\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              7
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              11
+            ], 
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ], 
+        "11": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              12
+            ], 
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "12": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              13
+            ], 
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            7
+          ], 
+          "unique_hash": "<lambda> <line 19>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            7
+          ], 
+          "unique_hash": "<lambda> <line 19>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              17
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            7
+          ], 
+          "unique_hash": "<lambda> <line 19>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              19
+            ], 
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ], 
+        "19": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              20
+            ], 
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              22
+            ], 
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              22
+            ], 
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              27
+            ], 
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "27": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              28
+            ], 
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "28": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              28
+            ], 
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "28": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs", 
+        "result"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              28
+            ], 
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "result": [
+          "REF", 
+          28
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "28": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 21, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ling-scheme-3.golden_py3 b/v3/tests/backend-tests/ling-scheme-3.golden_py3
new file mode 100644
index 000000000..4047de3db
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-3.golden_py3
@@ -0,0 +1,9009 @@
+{
+  "code": "def map(f, xs):\n  if xs == []:\n    return []\n  else:\n    return [f(xs[0])] + list(map(f, xs[1:]))\n\ndef append(xs, ys):\n  if xs == []:\n    return ys\n  else:\n    return [xs[0]] + append(xs[1:], ys)\n\ndef pairs(xs):\n  if xs == []:\n    return []\n  elif xs[1:] == []:\n    return []\n  else:\n    return append(map(lambda x: [xs[0], x], xs[1:]), pairs(xs[1:]))\n\nresult = pairs([1, 2, 3])\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ]
+      }, 
+      "line": 21, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f3", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              7
+            ], 
+            "x": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f3", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f5", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 5, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              9
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "<lambda> <line 19>_f5", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 6, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              11
+            ], 
+            "xs": [
+              "REF", 
+              10
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f6", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "10": [
+          "LIST"
+        ], 
+        "11": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              12
+            ], 
+            "xs": [
+              "REF", 
+              8
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f4", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "8": [
+          "LIST", 
+          3
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "12": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              13
+            ], 
+            "xs": [
+              "REF", 
+              5
+            ], 
+            "f": [
+              "REF", 
+              6
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f2", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "5": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "6": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          1
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            7
+          ], 
+          "unique_hash": "<lambda> <line 19>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 19, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            7
+          ], 
+          "unique_hash": "<lambda> <line 19>_f9", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 9, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              17
+            ], 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 19>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            7
+          ], 
+          "unique_hash": "<lambda> <line 19>_f9", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 10, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              19
+            ], 
+            "xs": [
+              "REF", 
+              18
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f10", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "18": [
+          "LIST"
+        ], 
+        "19": [
+          "LIST"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "map", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 8, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              20
+            ], 
+            "xs": [
+              "REF", 
+              15
+            ], 
+            "f": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "map", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "map_f8", 
+          "ordered_varnames": [
+            "f", 
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "15": [
+          "LIST", 
+          3
+        ], 
+        "16": [
+          "FUNCTION", 
+          "<lambda>(x) <line 19>", 
+          7
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 13, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 11, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              22
+            ], 
+            "xs": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f11", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "21": [
+          "LIST", 
+          3
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 13, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              22
+            ], 
+            "xs": [
+              "REF", 
+              23
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f13", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "23": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 12, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              20
+            ], 
+            "ys": [
+              "REF", 
+              22
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f12", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "20": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "22": [
+          "LIST"
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 7, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 16, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              26
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f16", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "26": [
+          "LIST"
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys"
+          ]
+        }, 
+        {
+          "frame_id": 15, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              27
+            ], 
+            "xs": [
+              "REF", 
+              25
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f15", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "25": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "27": [
+          "LIST", 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "append", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 14, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              28
+            ], 
+            "xs": [
+              "REF", 
+              13
+            ], 
+            "ys": [
+              "REF", 
+              24
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "append", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "append_f14", 
+          "ordered_varnames": [
+            "xs", 
+            "ys", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "13": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ]
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "28": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs"
+      ], 
+      "stdout": "", 
+      "func_name": "pairs", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              28
+            ], 
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "28": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 19, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "map", 
+        "append", 
+        "pairs", 
+        "result"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              28
+            ], 
+            "xs": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f1_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 7, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "xs": [
+              "REF", 
+              14
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "pairs", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "pairs_f7_p_z", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "map": [
+          "REF", 
+          1
+        ], 
+        "pairs": [
+          "REF", 
+          3
+        ], 
+        "result": [
+          "REF", 
+          28
+        ], 
+        "append": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "map(f, xs)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "append(xs, ys)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "pairs(xs)", 
+          null
+        ], 
+        "4": [
+          "LIST", 
+          1, 
+          2, 
+          3
+        ], 
+        "7": [
+          "LIST", 
+          1, 
+          2
+        ], 
+        "9": [
+          "LIST", 
+          1, 
+          3
+        ], 
+        "14": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "17": [
+          "LIST", 
+          2, 
+          3
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ]
+        ], 
+        "28": [
+          "LIST", 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            17
+          ]
+        ]
+      }, 
+      "line": 21, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ling-scheme-3.txt b/v3/tests/backend-tests/ling-scheme-3.txt
new file mode 100644
index 000000000..14ee800e8
--- /dev/null
+++ b/v3/tests/backend-tests/ling-scheme-3.txt
@@ -0,0 +1,21 @@
+def map(f, xs):
+  if xs == []:
+    return []
+  else:
+    return [f(xs[0])] + list(map(f, xs[1:]))
+
+def append(xs, ys):
+  if xs == []:
+    return ys
+  else:
+    return [xs[0]] + append(xs[1:], ys)
+
+def pairs(xs):
+  if xs == []:
+    return []
+  elif xs[1:] == []:
+    return []
+  else:
+    return append(map(lambda x: [xs[0], x], xs[1:]), pairs(xs[1:]))
+
+result = pairs([1, 2, 3])
diff --git a/v3/tests/backend-tests/list_dict_test.golden b/v3/tests/backend-tests/list_dict_test.golden
new file mode 100644
index 000000000..4baefb4f5
--- /dev/null
+++ b/v3/tests/backend-tests/list_dict_test.golden
@@ -0,0 +1,416 @@
+{
+  "code": "x = {}\nl = ['hello', \"world\", 'goodbye']\nfor (i, e) in enumerate(l):\n    x[e] = i\nprint(x)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "hello", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "hello", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "world", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "world", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ], 
+          [
+            "goodbye", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ], 
+          [
+            "goodbye", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "{'world': 1, 'hello': 0, 'goodbye': 2}\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ], 
+          [
+            "goodbye", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/list_dict_test.golden_py3 b/v3/tests/backend-tests/list_dict_test.golden_py3
new file mode 100644
index 000000000..4baefb4f5
--- /dev/null
+++ b/v3/tests/backend-tests/list_dict_test.golden_py3
@@ -0,0 +1,416 @@
+{
+  "code": "x = {}\nl = ['hello', \"world\", 'goodbye']\nfor (i, e) in enumerate(l):\n    x[e] = i\nprint(x)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ], 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "hello", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT"
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "hello", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "world", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "world", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ], 
+          [
+            "goodbye", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ], 
+          [
+            "goodbye", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "l", 
+        "i", 
+        "e"
+      ], 
+      "stdout": "{'world': 1, 'hello': 0, 'goodbye': 2}\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": [
+          "REF", 
+          1
+        ], 
+        "e": "goodbye", 
+        "l": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            "world", 
+            1
+          ], 
+          [
+            "hello", 
+            0
+          ], 
+          [
+            "goodbye", 
+            2
+          ]
+        ], 
+        "2": [
+          "LIST", 
+          "hello", 
+          "world", 
+          "goodbye"
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/list_dict_test.txt b/v3/tests/backend-tests/list_dict_test.txt
new file mode 100644
index 000000000..b44628526
--- /dev/null
+++ b/v3/tests/backend-tests/list_dict_test.txt
@@ -0,0 +1,6 @@
+x = {}
+l = ['hello', "world", 'goodbye']
+for (i, e) in enumerate(l):
+    x[e] = i
+print(x)
+
diff --git a/v3/tests/backend-tests/list_sum.golden b/v3/tests/backend-tests/list_sum.golden
new file mode 100644
index 000000000..332b07b21
--- /dev/null
+++ b/v3/tests/backend-tests/list_sum.golden
@@ -0,0 +1,2125 @@
+{
+  "code": "def listSum(numbers):\n  if not numbers:\n    return 0\n  else:\n    (f, rest) = numbers\n    return f + listSum(rest)\n\nmyList = (1, (2, (3, None)))\ntotal = listSum(myList)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 0, 
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList", 
+        "total"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "total": 6, 
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/list_sum.golden_py3 b/v3/tests/backend-tests/list_sum.golden_py3
new file mode 100644
index 000000000..332b07b21
--- /dev/null
+++ b/v3/tests/backend-tests/list_sum.golden_py3
@@ -0,0 +1,2125 @@
+{
+  "code": "def listSum(numbers):\n  if not numbers:\n    return 0\n  else:\n    (f, rest) = numbers\n    return f + listSum(rest)\n\nmyList = (1, (2, (3, None)))\ntotal = listSum(myList)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": 0, 
+            "numbers": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f4", 
+          "ordered_varnames": [
+            "numbers", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 3, 
+            "numbers": [
+              "REF", 
+              4
+            ], 
+            "rest": null, 
+            "f": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f3", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "numbers": [
+              "REF", 
+              3
+            ], 
+            "rest": [
+              "REF", 
+              4
+            ], 
+            "f": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f2", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList"
+      ], 
+      "stdout": "", 
+      "func_name": "listSum", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 6, 
+            "numbers": [
+              "REF", 
+              2
+            ], 
+            "rest": [
+              "REF", 
+              3
+            ], 
+            "f": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "listSum", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "listSum_f1", 
+          "ordered_varnames": [
+            "numbers", 
+            "f", 
+            "rest", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "listSum", 
+        "myList", 
+        "total"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "total": 6, 
+        "myList": [
+          "REF", 
+          2
+        ], 
+        "listSum": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "listSum(numbers)", 
+          null
+        ], 
+        "2": [
+          "TUPLE", 
+          1, 
+          [
+            "REF", 
+            3
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          2, 
+          [
+            "REF", 
+            4
+          ]
+        ], 
+        "4": [
+          "TUPLE", 
+          3, 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/list_sum.txt b/v3/tests/backend-tests/list_sum.txt
new file mode 100644
index 000000000..ce2556a0d
--- /dev/null
+++ b/v3/tests/backend-tests/list_sum.txt
@@ -0,0 +1,9 @@
+def listSum(numbers):
+  if not numbers:
+    return 0
+  else:
+    (f, rest) = numbers
+    return f + listSum(rest)
+
+myList = (1, (2, (3, None)))
+total = listSum(myList)
diff --git a/v3/tests/backend-tests/list_test.golden b/v3/tests/backend-tests/list_test.golden
new file mode 100644
index 000000000..9d34156ff
--- /dev/null
+++ b/v3/tests/backend-tests/list_test.golden
@@ -0,0 +1,48 @@
+{
+  "code": "x = [1, 2, \"hello\", (3, 4)]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          "hello", 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 1, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/list_test.golden_py3 b/v3/tests/backend-tests/list_test.golden_py3
new file mode 100644
index 000000000..9d34156ff
--- /dev/null
+++ b/v3/tests/backend-tests/list_test.golden_py3
@@ -0,0 +1,48 @@
+{
+  "code": "x = [1, 2, \"hello\", (3, 4)]\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          1, 
+          2, 
+          "hello", 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          3, 
+          4
+        ]
+      }, 
+      "line": 1, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/list_test.txt b/v3/tests/backend-tests/list_test.txt
new file mode 100644
index 000000000..a56999261
--- /dev/null
+++ b/v3/tests/backend-tests/list_test.txt
@@ -0,0 +1 @@
+x = [1, 2, "hello", (3, 4)]
diff --git a/v3/tests/backend-tests/namedtuple.golden b/v3/tests/backend-tests/namedtuple.golden
new file mode 100644
index 000000000..7f5bbaf91
--- /dev/null
+++ b/v3/tests/backend-tests/namedtuple.golden
@@ -0,0 +1,716 @@
+{
+  "code": "from collections import namedtuple\n\nRestaurant = namedtuple('Restaurant', 'name cuisine phone dish price')\n\nR1 = Restaurant(\"Taillevent\", \"French\", \"343-3434\", \"Escargots\", 24.50)\nR2 = Restaurant(\"La Tour D'Argent\", \"French\", \"343-3344\", \"Ris de Veau\", 48.50)\n\n#R3 = Restaurant(\"Pascal\", \"French\", \"333-4444\", \"Bouillabaisse\", 32.00)\n#R4 = Restaurant(\"Thai Touch\", \"Thai\", \"444-3333\", \"Mee Krob\", 10.95)\n#R5 = Restaurant(\"Thai Dishes\", \"Thai\", \"333-4433\", \"Paht Woon Sen\",  8.50)\n#R6 = Restaurant(\"Thai Spoon\", \"Thai\", \"334-3344\", \"Mussamun\", 9.00)\n#R7 = Restaurant(\"McDonald's\", \"Burgers\", \"333-4443\", \"Big Mac\", 3.95)\n#R8 = Restaurant(\"Burger King\", \"Burgers\", \"444-3344\", \"Whopper\", 3.75)\n#R9 = Restaurant(\"Wahoo's\", \"Fish Tacos\", \"443-4443\", \"Mahi Mahi Burrito\", 7.50)\n#R10 = Restaurant(\"In-N-Out Burger\", \"Burgers\", \"434-3344\", \"Cheeseburger\", 2.50)\n#R11 = Restaurant(\"The Shack\", \"Burgers\", \"333-3334\", \"Hot Link Burger\", 4.50)\n#R12 = Restaurant(\"Gina's\", \"Pizza\", \"334-4433\", \"Combo Pizza\", 12.95)\n#R13 = Restaurant(\"Peacock, Room\", \"Indian\", \"333-4443\", \"Rogan Josh\", 12.50)\n#R14 = Restaurant(\"Gaylord\", \"Indian\", \"333-3433\", \"Tandoori Chicken\", 13.50)\n#R15 = Restaurant(\"Mr. Chow\", \"Chinese\", \"222-3333\", \"Peking Duck\", 24.50)\n#R16 = Restaurant(\"Chez Panisse\", \"California\", \"222-3322\", \"Grilled Duck Breast\", 25.00)\n#R17 = Restaurant(\"Spago\", \"California\", \"333-2222\", \"Striped Bass\", 24.50)\n#R18 = Restaurant(\"Sriped Bass\", \"Seafood\", \"333-2233\", \"Cedar Plank Salmon\", 21.50)\n#R19 = Restaurant(\"Golden Pagoda\", \"Chinese\", \"232-3232\", \"Egg Foo Young\", 8.50)\n#R20 = Restaurant(\"Langer's\", \"Delicatessen\", \"333-2223\", \"Pastrami Sandwich\", 11.50)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/namedtuple.golden_py3 b/v3/tests/backend-tests/namedtuple.golden_py3
new file mode 100644
index 000000000..5af269044
--- /dev/null
+++ b/v3/tests/backend-tests/namedtuple.golden_py3
@@ -0,0 +1,620 @@
+{
+  "code": "from collections import namedtuple\n\nRestaurant = namedtuple('Restaurant', 'name cuisine phone dish price')\n\nR1 = Restaurant(\"Taillevent\", \"French\", \"343-3434\", \"Escargots\", 24.50)\nR2 = Restaurant(\"La Tour D'Argent\", \"French\", \"343-3344\", \"Ris de Veau\", 48.50)\n\n#R3 = Restaurant(\"Pascal\", \"French\", \"333-4444\", \"Bouillabaisse\", 32.00)\n#R4 = Restaurant(\"Thai Touch\", \"Thai\", \"444-3333\", \"Mee Krob\", 10.95)\n#R5 = Restaurant(\"Thai Dishes\", \"Thai\", \"333-4433\", \"Paht Woon Sen\",  8.50)\n#R6 = Restaurant(\"Thai Spoon\", \"Thai\", \"334-3344\", \"Mussamun\", 9.00)\n#R7 = Restaurant(\"McDonald's\", \"Burgers\", \"333-4443\", \"Big Mac\", 3.95)\n#R8 = Restaurant(\"Burger King\", \"Burgers\", \"444-3344\", \"Whopper\", 3.75)\n#R9 = Restaurant(\"Wahoo's\", \"Fish Tacos\", \"443-4443\", \"Mahi Mahi Burrito\", 7.50)\n#R10 = Restaurant(\"In-N-Out Burger\", \"Burgers\", \"434-3344\", \"Cheeseburger\", 2.50)\n#R11 = Restaurant(\"The Shack\", \"Burgers\", \"333-3334\", \"Hot Link Burger\", 4.50)\n#R12 = Restaurant(\"Gina's\", \"Pizza\", \"334-4433\", \"Combo Pizza\", 12.95)\n#R13 = Restaurant(\"Peacock, Room\", \"Indian\", \"333-4443\", \"Rogan Josh\", 12.50)\n#R14 = Restaurant(\"Gaylord\", \"Indian\", \"333-3433\", \"Tandoori Chicken\", 13.50)\n#R15 = Restaurant(\"Mr. Chow\", \"Chinese\", \"222-3333\", \"Peking Duck\", 24.50)\n#R16 = Restaurant(\"Chez Panisse\", \"California\", \"222-3322\", \"Grilled Duck Breast\", 25.00)\n#R17 = Restaurant(\"Spago\", \"California\", \"333-2222\", \"Striped Bass\", 24.50)\n#R18 = Restaurant(\"Sriped Bass\", \"Seafood\", \"333-2233\", \"Cedar Plank Salmon\", 21.50)\n#R19 = Restaurant(\"Golden Pagoda\", \"Chinese\", \"232-3232\", \"Egg Foo Young\", 8.50)\n#R20 = Restaurant(\"Langer's\", \"Delicatessen\", \"333-2223\", \"Pastrami Sandwich\", 11.50)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/namedtuple.txt b/v3/tests/backend-tests/namedtuple.txt
new file mode 100644
index 000000000..218d64349
--- /dev/null
+++ b/v3/tests/backend-tests/namedtuple.txt
@@ -0,0 +1,25 @@
+from collections import namedtuple
+
+Restaurant = namedtuple('Restaurant', 'name cuisine phone dish price')
+
+R1 = Restaurant("Taillevent", "French", "343-3434", "Escargots", 24.50)
+R2 = Restaurant("La Tour D'Argent", "French", "343-3344", "Ris de Veau", 48.50)
+
+#R3 = Restaurant("Pascal", "French", "333-4444", "Bouillabaisse", 32.00)
+#R4 = Restaurant("Thai Touch", "Thai", "444-3333", "Mee Krob", 10.95)
+#R5 = Restaurant("Thai Dishes", "Thai", "333-4433", "Paht Woon Sen",  8.50)
+#R6 = Restaurant("Thai Spoon", "Thai", "334-3344", "Mussamun", 9.00)
+#R7 = Restaurant("McDonald's", "Burgers", "333-4443", "Big Mac", 3.95)
+#R8 = Restaurant("Burger King", "Burgers", "444-3344", "Whopper", 3.75)
+#R9 = Restaurant("Wahoo's", "Fish Tacos", "443-4443", "Mahi Mahi Burrito", 7.50)
+#R10 = Restaurant("In-N-Out Burger", "Burgers", "434-3344", "Cheeseburger", 2.50)
+#R11 = Restaurant("The Shack", "Burgers", "333-3334", "Hot Link Burger", 4.50)
+#R12 = Restaurant("Gina's", "Pizza", "334-4433", "Combo Pizza", 12.95)
+#R13 = Restaurant("Peacock, Room", "Indian", "333-4443", "Rogan Josh", 12.50)
+#R14 = Restaurant("Gaylord", "Indian", "333-3433", "Tandoori Chicken", 13.50)
+#R15 = Restaurant("Mr. Chow", "Chinese", "222-3333", "Peking Duck", 24.50)
+#R16 = Restaurant("Chez Panisse", "California", "222-3322", "Grilled Duck Breast", 25.00)
+#R17 = Restaurant("Spago", "California", "333-2222", "Striped Bass", 24.50)
+#R18 = Restaurant("Sriped Bass", "Seafood", "333-2233", "Cedar Plank Salmon", 21.50)
+#R19 = Restaurant("Golden Pagoda", "Chinese", "232-3232", "Egg Foo Young", 8.50)
+#R20 = Restaurant("Langer's", "Delicatessen", "333-2223", "Pastrami Sandwich", 11.50)
diff --git a/v3/tests/backend-tests/nested-class-test.golden b/v3/tests/backend-tests/nested-class-test.golden
new file mode 100644
index 000000000..5c15d317d
--- /dev/null
+++ b/v3/tests/backend-tests/nested-class-test.golden
@@ -0,0 +1,305 @@
+{
+  "code": "class A:\n    x = 5\n    class B:\n        y = 6\n        class C:\n            z = 7\n\na = A()\nb = a.B()\nc = b.C()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ], 
+        "5": [
+          "INSTANCE", 
+          "B"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a", 
+        "b", 
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ], 
+        "c": [
+          "REF", 
+          6
+        ], 
+        "b": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ], 
+        "5": [
+          "INSTANCE", 
+          "B"
+        ], 
+        "6": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/nested-class-test.golden_py3 b/v3/tests/backend-tests/nested-class-test.golden_py3
new file mode 100644
index 000000000..5c15d317d
--- /dev/null
+++ b/v3/tests/backend-tests/nested-class-test.golden_py3
@@ -0,0 +1,305 @@
+{
+  "code": "class A:\n    x = 5\n    class B:\n        y = 6\n        class C:\n            z = 7\n\na = A()\nb = a.B()\nc = b.C()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ], 
+        "b": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ], 
+        "5": [
+          "INSTANCE", 
+          "B"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a", 
+        "b", 
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ], 
+        "c": [
+          "REF", 
+          6
+        ], 
+        "b": [
+          "REF", 
+          5
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "B", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "x", 
+            5
+          ]
+        ], 
+        "2": [
+          "CLASS", 
+          "B", 
+          [], 
+          [
+            "C", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "y", 
+            6
+          ]
+        ], 
+        "3": [
+          "CLASS", 
+          "C", 
+          [], 
+          [
+            "z", 
+            7
+          ]
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ], 
+        "5": [
+          "INSTANCE", 
+          "B"
+        ], 
+        "6": [
+          "INSTANCE", 
+          "C"
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/nested-class-test.txt b/v3/tests/backend-tests/nested-class-test.txt
new file mode 100644
index 000000000..0c4da73da
--- /dev/null
+++ b/v3/tests/backend-tests/nested-class-test.txt
@@ -0,0 +1,10 @@
+class A:
+    x = 5
+    class B:
+        y = 6
+        class C:
+            z = 7
+
+a = A()
+b = a.B()
+c = b.C()
diff --git a/v3/tests/backend-tests/nested-func-double-call.golden b/v3/tests/backend-tests/nested-func-double-call.golden
new file mode 100644
index 000000000..a81b85d29
--- /dev/null
+++ b/v3/tests/backend-tests/nested-func-double-call.golden
@@ -0,0 +1,698 @@
+{
+  "code": "# from Berkeley CS61a:\ndef f(p, k):\n    def g(): # super tricky because there are two g's with DIFFERENT parent frames\n        print(k)\n    if k == 0:\n        f(g, 1)\n\nf(None, 0)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/nested-func-double-call.golden_py3 b/v3/tests/backend-tests/nested-func-double-call.golden_py3
new file mode 100644
index 000000000..a81b85d29
--- /dev/null
+++ b/v3/tests/backend-tests/nested-func-double-call.golden_py3
@@ -0,0 +1,698 @@
+{
+  "code": "# from Berkeley CS61a:\ndef f(p, k):\n    def g(): # super tricky because there are two g's with DIFFERENT parent frames\n        print(k)\n    if k == 0:\n        f(g, 1)\n\nf(None, 0)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2", 
+          "ordered_varnames": [
+            "p", 
+            "k"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": null, 
+            "k": 0, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "p": [
+              "REF", 
+              2
+            ], 
+            "k": 1, 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f2_p_z", 
+          "ordered_varnames": [
+            "p", 
+            "k", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(p, k)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          2
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/nested-func-double-call.txt b/v3/tests/backend-tests/nested-func-double-call.txt
new file mode 100644
index 000000000..d0fd10b0f
--- /dev/null
+++ b/v3/tests/backend-tests/nested-func-double-call.txt
@@ -0,0 +1,8 @@
+# from Berkeley CS61a:
+def f(p, k):
+    def g(): # super tricky because there are two g's with DIFFERENT parent frames
+        print(k)
+    if k == 0:
+        f(g, 1)
+
+f(None, 0)
diff --git a/v3/tests/backend-tests/nested-func-identical-frames.golden b/v3/tests/backend-tests/nested-func-identical-frames.golden
new file mode 100644
index 000000000..299be5e11
--- /dev/null
+++ b/v3/tests/backend-tests/nested-func-identical-frames.golden
@@ -0,0 +1,1102 @@
+{
+  "code": "def f():\n    def g():\n        pass\n    return g\n\nf()()\nf()()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p", 
+          "ordered_varnames": [
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            3
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            3
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            3
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/nested-func-identical-frames.golden_py3 b/v3/tests/backend-tests/nested-func-identical-frames.golden_py3
new file mode 100644
index 000000000..299be5e11
--- /dev/null
+++ b/v3/tests/backend-tests/nested-func-identical-frames.golden_py3
@@ -0,0 +1,1102 @@
+{
+  "code": "def f():\n    def g():\n        pass\n    return g\n\nf()()\nf()()\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p", 
+          "ordered_varnames": [
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            3
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {}, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            3
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": []
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "__return__": null
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            3
+          ], 
+          "unique_hash": "g_f4", 
+          "ordered_varnames": [
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              2
+            ], 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": [
+              "REF", 
+              3
+            ], 
+            "g": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f3_p_z", 
+          "ordered_varnames": [
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f()", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g()", 
+          1
+        ], 
+        "3": [
+          "FUNCTION", 
+          "g()", 
+          3
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/nested-func-identical-frames.txt b/v3/tests/backend-tests/nested-func-identical-frames.txt
new file mode 100644
index 000000000..460c70c03
--- /dev/null
+++ b/v3/tests/backend-tests/nested-func-identical-frames.txt
@@ -0,0 +1,7 @@
+def f():
+    def g():
+        pass
+    return g
+
+f()()
+f()()
diff --git a/v3/tests/backend-tests/newstyle_class.golden b/v3/tests/backend-tests/newstyle_class.golden
new file mode 100644
index 000000000..e54f299c0
--- /dev/null
+++ b/v3/tests/backend-tests/newstyle_class.golden
@@ -0,0 +1,817 @@
+{
+  "code": "class A(object):\n  bla = \"A\"\n  def __init__(self):\n    self.blb = \"B\"\n\n  def x(self):\n    self.bla = self.blb\n\na = A()\n\na.x()\n\nprint(a.bla)\nprint(A.bla)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "x", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "x", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "x_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "x", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "x", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "x_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "x", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "x", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "x_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "B\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "B\nA\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/newstyle_class.golden_py3 b/v3/tests/backend-tests/newstyle_class.golden_py3
new file mode 100644
index 000000000..e54f299c0
--- /dev/null
+++ b/v3/tests/backend-tests/newstyle_class.golden_py3
@@ -0,0 +1,817 @@
+{
+  "code": "class A(object):\n  bla = \"A\"\n  def __init__(self):\n    self.blb = \"B\"\n\n  def x(self):\n    self.bla = self.blb\n\na = A()\n\na.x()\n\nprint(a.bla)\nprint(A.bla)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "x", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "x", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "x_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 6, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "x", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "x", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "x_f2", 
+          "ordered_varnames": [
+            "self"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "x", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              4
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "x", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "x_f2", 
+          "ordered_varnames": [
+            "self", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "B\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "A", 
+        "a"
+      ], 
+      "stdout": "B\nA\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "A": [
+          "REF", 
+          1
+        ], 
+        "a": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "A", 
+          [], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "bla", 
+            "A"
+          ], 
+          [
+            "x", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "FUNCTION", 
+          "__init__(self)", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "x(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "A", 
+          [
+            "bla", 
+            "B"
+          ], 
+          [
+            "blb", 
+            "B"
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/newstyle_class.txt b/v3/tests/backend-tests/newstyle_class.txt
new file mode 100644
index 000000000..bc5e5551a
--- /dev/null
+++ b/v3/tests/backend-tests/newstyle_class.txt
@@ -0,0 +1,15 @@
+class A(object):
+  bla = "A"
+  def __init__(self):
+    self.blb = "B"
+
+  def x(self):
+    self.bla = self.blb
+
+a = A()
+
+a.x()
+
+print(a.bla)
+print(A.bla)
+
diff --git a/v3/tests/backend-tests/one_func.golden b/v3/tests/backend-tests/one_func.golden
new file mode 100644
index 000000000..ecd811f5c
--- /dev/null
+++ b/v3/tests/backend-tests/one_func.golden
@@ -0,0 +1,350 @@
+{
+  "code": "def add(a, b, c):\n  d = a + b\n  return c + d\n\nx = 5\ny = 10\nz = x * y\nprint(add(x, y, z))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/one_func.golden_py3 b/v3/tests/backend-tests/one_func.golden_py3
new file mode 100644
index 000000000..ecd811f5c
--- /dev/null
+++ b/v3/tests/backend-tests/one_func.golden_py3
@@ -0,0 +1,350 @@
+{
+  "code": "def add(a, b, c):\n  d = a + b\n  return c + d\n\nx = 5\ny = 10\nz = x * y\nprint(add(x, y, z))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/one_func.txt b/v3/tests/backend-tests/one_func.txt
new file mode 100644
index 000000000..9ade23636
--- /dev/null
+++ b/v3/tests/backend-tests/one_func.txt
@@ -0,0 +1,8 @@
+def add(a, b, c):
+  d = a + b
+  return c + d
+
+x = 5
+y = 10
+z = x * y
+print(add(x, y, z))
diff --git a/v3/tests/backend-tests/open_error.golden b/v3/tests/backend-tests/open_error.golden
new file mode 100644
index 000000000..bd722019e
--- /dev/null
+++ b/v3/tests/backend-tests/open_error.golden
@@ -0,0 +1,26 @@
+{
+  "code": "for line in open(\"/etc/passwd\"):\n    print(line)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "Exception: open() is not supported.\nInstead use StringIO.StringIO() to simulate a file.\nHere is an example: http://goo.gl/Q9xQ4p", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/open_error.golden_py3 b/v3/tests/backend-tests/open_error.golden_py3
new file mode 100644
index 000000000..ecca3ce4f
--- /dev/null
+++ b/v3/tests/backend-tests/open_error.golden_py3
@@ -0,0 +1,26 @@
+{
+  "code": "for line in open(\"/etc/passwd\"):\n    print(line)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "Exception: open() is not supported.\nInstead use io.StringIO() to simulate a file.\nHere is an example: http://goo.gl/uNvBGl", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/open_error.txt b/v3/tests/backend-tests/open_error.txt
new file mode 100644
index 000000000..a80454764
--- /dev/null
+++ b/v3/tests/backend-tests/open_error.txt
@@ -0,0 +1,3 @@
+for line in open("/etc/passwd"):
+    print(line)
+
diff --git a/v3/tests/backend-tests/papajohn-monster.golden b/v3/tests/backend-tests/papajohn-monster.golden
new file mode 100644
index 000000000..d52ccd889
--- /dev/null
+++ b/v3/tests/backend-tests/papajohn-monster.golden
@@ -0,0 +1,988 @@
+{
+  "code": "# original reported by papajohn in Oct 2013\nclass Monster:\n    vampire = {2: 'scary'}\n    def werewolf(self):\n        return self.vampire[2]\n\nclass Blob(Monster):\n    vampire = {2: 'night'}\n    def __init__(self, ghoul):\n        self.witch = ghoul.vampire\n        self.witch[3] = self\n\nspooky = Blob(Monster)\nspooky.werewolf = lambda self: Monster.vampire[2]\n\n\n# minimized by pgbovine ...\n'''\nclass Monster:\n    def werewolf(self):\n        pass\n\nclass Blob(Monster):\n    def __init__(self, ghoul):\n        pass\n\nspooky = Blob(Monster)\n'''\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob"
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob", 
+        "spooky"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "spooky": [
+          "REF", 
+          7
+        ], 
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob", 
+        "spooky"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "spooky": [
+          "REF", 
+          7
+        ], 
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "<lambda>(self) <line 14>", 
+          null
+        ]
+      }, 
+      "line": 28, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob", 
+        "spooky"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "spooky": [
+          "REF", 
+          7
+        ], 
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "<lambda>(self) <line 14>", 
+          null
+        ]
+      }, 
+      "line": 28, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/papajohn-monster.golden_py3 b/v3/tests/backend-tests/papajohn-monster.golden_py3
new file mode 100644
index 000000000..d52ccd889
--- /dev/null
+++ b/v3/tests/backend-tests/papajohn-monster.golden_py3
@@ -0,0 +1,988 @@
+{
+  "code": "# original reported by papajohn in Oct 2013\nclass Monster:\n    vampire = {2: 'scary'}\n    def werewolf(self):\n        return self.vampire[2]\n\nclass Blob(Monster):\n    vampire = {2: 'night'}\n    def __init__(self, ghoul):\n        self.witch = ghoul.vampire\n        self.witch[3] = self\n\nspooky = Blob(Monster)\nspooky.werewolf = lambda self: Monster.vampire[2]\n\n\n# minimized by pgbovine ...\n'''\nclass Monster:\n    def werewolf(self):\n        pass\n\nclass Blob(Monster):\n    def __init__(self, ghoul):\n        pass\n\nspooky = Blob(Monster)\n'''\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob"
+        ]
+      }, 
+      "line": 9, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob"
+      ], 
+      "stdout": "", 
+      "func_name": "__init__", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "self": [
+              "REF", 
+              7
+            ], 
+            "ghoul": [
+              "REF", 
+              1
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "__init__", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "__init___f1", 
+          "ordered_varnames": [
+            "self", 
+            "ghoul", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob", 
+        "spooky"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "spooky": [
+          "REF", 
+          7
+        ], 
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob", 
+        "spooky"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "spooky": [
+          "REF", 
+          7
+        ], 
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "<lambda>(self) <line 14>", 
+          null
+        ]
+      }, 
+      "line": 28, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "Monster", 
+        "Blob", 
+        "spooky"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "spooky": [
+          "REF", 
+          7
+        ], 
+        "Monster": [
+          "REF", 
+          1
+        ], 
+        "Blob": [
+          "REF", 
+          4
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "CLASS", 
+          "Monster", 
+          [], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              2
+            ]
+          ], 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              3
+            ]
+          ]
+        ], 
+        "2": [
+          "DICT", 
+          [
+            2, 
+            "scary"
+          ], 
+          [
+            3, 
+            [
+              "REF", 
+              7
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "werewolf(self)", 
+          null
+        ], 
+        "4": [
+          "CLASS", 
+          "Blob", 
+          [
+            "Monster"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "vampire", 
+            [
+              "REF", 
+              6
+            ]
+          ]
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__init__(self, ghoul)", 
+          null
+        ], 
+        "6": [
+          "DICT", 
+          [
+            2, 
+            "night"
+          ]
+        ], 
+        "7": [
+          "INSTANCE", 
+          "Blob", 
+          [
+            "werewolf", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "witch", 
+            [
+              "REF", 
+              2
+            ]
+          ]
+        ], 
+        "8": [
+          "FUNCTION", 
+          "<lambda>(self) <line 14>", 
+          null
+        ]
+      }, 
+      "line": 28, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/papajohn-monster.txt b/v3/tests/backend-tests/papajohn-monster.txt
new file mode 100644
index 000000000..700090839
--- /dev/null
+++ b/v3/tests/backend-tests/papajohn-monster.txt
@@ -0,0 +1,28 @@
+# original reported by papajohn in Oct 2013
+class Monster:
+    vampire = {2: 'scary'}
+    def werewolf(self):
+        return self.vampire[2]
+
+class Blob(Monster):
+    vampire = {2: 'night'}
+    def __init__(self, ghoul):
+        self.witch = ghoul.vampire
+        self.witch[3] = self
+
+spooky = Blob(Monster)
+spooky.werewolf = lambda self: Monster.vampire[2]
+
+
+# minimized by pgbovine ...
+'''
+class Monster:
+    def werewolf(self):
+        pass
+
+class Blob(Monster):
+    def __init__(self, ghoul):
+        pass
+
+spooky = Blob(Monster)
+'''
diff --git a/v3/tests/backend-tests/parent-finding-1.golden b/v3/tests/backend-tests/parent-finding-1.golden
new file mode 100644
index 000000000..00a4aab28
--- /dev/null
+++ b/v3/tests/backend-tests/parent-finding-1.golden
@@ -0,0 +1,483 @@
+{
+  "code": "# make sure OPT finds f as the parent of g\ndef f(x, y):\n    def g(x):\n        return x + y\n    return g(3)\n\nf(1, 2)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 5, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 5, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parent-finding-1.golden_py3 b/v3/tests/backend-tests/parent-finding-1.golden_py3
new file mode 100644
index 000000000..00a4aab28
--- /dev/null
+++ b/v3/tests/backend-tests/parent-finding-1.golden_py3
@@ -0,0 +1,483 @@
+{
+  "code": "# make sure OPT finds f as the parent of g\ndef f(x, y):\n    def g(x):\n        return x + y\n    return g(3)\n\nf(1, 2)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "g", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 5, 
+            "x": 3
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "g", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "g_f2", 
+          "ordered_varnames": [
+            "x", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 5, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "y": 2, 
+            "x": 1, 
+            "__return__": 5, 
+            "g": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "f", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1_p_z", 
+          "ordered_varnames": [
+            "x", 
+            "y", 
+            "g", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(x, y)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "g(x)", 
+          1
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parent-finding-1.txt b/v3/tests/backend-tests/parent-finding-1.txt
new file mode 100644
index 000000000..0726f0726
--- /dev/null
+++ b/v3/tests/backend-tests/parent-finding-1.txt
@@ -0,0 +1,7 @@
+# make sure OPT finds f as the parent of g
+def f(x, y):
+    def g(x):
+        return x + y
+    return g(3)
+
+f(1, 2)
diff --git a/v3/tests/backend-tests/parent-finding-2.golden b/v3/tests/backend-tests/parent-finding-2.golden
new file mode 100644
index 000000000..c17bd4180
--- /dev/null
+++ b/v3/tests/backend-tests/parent-finding-2.golden
@@ -0,0 +1,957 @@
+{
+  "code": "# make sure OPT finds horse as parent of mask\ndef horse(mask):\n    horse = mask\n    def mask(horse):\n        return horse\n    return horse(mask)\n\nmask = lambda horse: horse(2)\n\nhorse(mask)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "mask": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1", 
+          "ordered_varnames": [
+            "mask"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "mask": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1", 
+          "ordered_varnames": [
+            "mask"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "mask", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "horse": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "mask", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "mask_f3", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "mask", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "horse": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "mask", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "mask_f3", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "mask", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "mask", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "mask_f3", 
+          "ordered_varnames": [
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p_z", 
+          "ordered_varnames": [
+            "mask", 
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parent-finding-2.golden_py3 b/v3/tests/backend-tests/parent-finding-2.golden_py3
new file mode 100644
index 000000000..c17bd4180
--- /dev/null
+++ b/v3/tests/backend-tests/parent-finding-2.golden_py3
@@ -0,0 +1,957 @@
+{
+  "code": "# make sure OPT finds horse as parent of mask\ndef horse(mask):\n    horse = mask\n    def mask(horse):\n        return horse\n    return horse(mask)\n\nmask = lambda horse: horse(2)\n\nhorse(mask)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "mask": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1", 
+          "ordered_varnames": [
+            "mask"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "mask": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1", 
+          "ordered_varnames": [
+            "mask"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "mask", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "horse": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "mask", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "mask_f3", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 4, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "mask", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "horse": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "mask", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "mask_f3", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "mask", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": 2
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "mask", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [
+            1
+          ], 
+          "unique_hash": "mask_f3", 
+          "ordered_varnames": [
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 5, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<lambda>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse"
+          ]
+        }, 
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<lambda> <line 8>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<lambda> <line 8>_f2", 
+          "ordered_varnames": [
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "horse", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p", 
+          "ordered_varnames": [
+            "mask", 
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "horse", 
+        "mask"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": 2, 
+            "horse": [
+              "REF", 
+              2
+            ], 
+            "mask": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": false, 
+          "is_parent": true, 
+          "func_name": "horse", 
+          "is_zombie": true, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "horse_f1_p_z", 
+          "ordered_varnames": [
+            "mask", 
+            "horse", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "horse": [
+          "REF", 
+          1
+        ], 
+        "mask": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "horse(mask)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "<lambda>(horse) <line 8>", 
+          null
+        ], 
+        "3": [
+          "FUNCTION", 
+          "mask(horse)", 
+          1
+        ]
+      }, 
+      "line": 10, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parent-finding-2.txt b/v3/tests/backend-tests/parent-finding-2.txt
new file mode 100644
index 000000000..c117d4163
--- /dev/null
+++ b/v3/tests/backend-tests/parent-finding-2.txt
@@ -0,0 +1,10 @@
+# make sure OPT finds horse as parent of mask
+def horse(mask):
+    horse = mask
+    def mask(horse):
+        return horse
+    return horse(mask)
+
+mask = lambda horse: horse(2)
+
+horse(mask)
diff --git a/v3/tests/backend-tests/parse_error.golden b/v3/tests/backend-tests/parse_error.golden
new file mode 100644
index 000000000..047dce543
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error.golden
@@ -0,0 +1,11 @@
+{
+  "code": "x = 0\nfor i in range(10):\n  x += 1\n   print x\n  x += 1\n\n", 
+  "trace": [
+    {
+      "exception_msg": "IndentationError: unexpected indent (<string>, line 4)", 
+      "line": 4, 
+      "event": "uncaught_exception", 
+      "offset": 3
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parse_error.golden_py3 b/v3/tests/backend-tests/parse_error.golden_py3
new file mode 100644
index 000000000..047dce543
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error.golden_py3
@@ -0,0 +1,11 @@
+{
+  "code": "x = 0\nfor i in range(10):\n  x += 1\n   print x\n  x += 1\n\n", 
+  "trace": [
+    {
+      "exception_msg": "IndentationError: unexpected indent (<string>, line 4)", 
+      "line": 4, 
+      "event": "uncaught_exception", 
+      "offset": 3
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parse_error.txt b/v3/tests/backend-tests/parse_error.txt
new file mode 100644
index 000000000..efab03533
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error.txt
@@ -0,0 +1,6 @@
+x = 0
+for i in range(10):
+  x += 1
+   print x
+  x += 1
+
diff --git a/v3/tests/backend-tests/parse_error_2.golden b/v3/tests/backend-tests/parse_error_2.golden
new file mode 100644
index 000000000..a6973b8ee
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error_2.golden
@@ -0,0 +1,11 @@
+{
+  "code": "x = 5\ny = x\nz = x + y\n\nfor x haslk;fjlasfhlkjl;sa\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 5)", 
+      "line": 5, 
+      "event": "uncaught_exception", 
+      "offset": 11
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parse_error_2.golden_py3 b/v3/tests/backend-tests/parse_error_2.golden_py3
new file mode 100644
index 000000000..a6973b8ee
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error_2.golden_py3
@@ -0,0 +1,11 @@
+{
+  "code": "x = 5\ny = x\nz = x + y\n\nfor x haslk;fjlasfhlkjl;sa\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 5)", 
+      "line": 5, 
+      "event": "uncaught_exception", 
+      "offset": 11
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parse_error_2.txt b/v3/tests/backend-tests/parse_error_2.txt
new file mode 100644
index 000000000..80070e74b
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error_2.txt
@@ -0,0 +1,5 @@
+x = 5
+y = x
+z = x + y
+
+for x haslk;fjlasfhlkjl;sa
diff --git a/v3/tests/backend-tests/parse_error_3.golden b/v3/tests/backend-tests/parse_error_3.golden
new file mode 100644
index 000000000..8ae537dd0
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error_3.golden
@@ -0,0 +1,11 @@
+{
+  "code": "x = []\nfor i in range(10):\n    x.append(i)\n    if i == 24:\n        pass\n   print y\n", 
+  "trace": [
+    {
+      "exception_msg": "IndentationError: unindent does not match any outer indentation level (<string>, line 6)", 
+      "line": 6, 
+      "event": "uncaught_exception", 
+      "offset": 11
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parse_error_3.golden_py3 b/v3/tests/backend-tests/parse_error_3.golden_py3
new file mode 100644
index 000000000..8ae537dd0
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error_3.golden_py3
@@ -0,0 +1,11 @@
+{
+  "code": "x = []\nfor i in range(10):\n    x.append(i)\n    if i == 24:\n        pass\n   print y\n", 
+  "trace": [
+    {
+      "exception_msg": "IndentationError: unindent does not match any outer indentation level (<string>, line 6)", 
+      "line": 6, 
+      "event": "uncaught_exception", 
+      "offset": 11
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/parse_error_3.txt b/v3/tests/backend-tests/parse_error_3.txt
new file mode 100644
index 000000000..bcc7bbf0e
--- /dev/null
+++ b/v3/tests/backend-tests/parse_error_3.txt
@@ -0,0 +1,6 @@
+x = []
+for i in range(10):
+    x.append(i)
+    if i == 24:
+        pass
+   print y
diff --git a/v3/tests/backend-tests/pie-test.golden b/v3/tests/backend-tests/pie-test.golden
new file mode 100644
index 000000000..1a5218ee0
--- /dev/null
+++ b/v3/tests/backend-tests/pie-test.golden
@@ -0,0 +1,91 @@
+{
+  "code": "import operator\nfrom math import pi, e\npie = operator.add(pi, e)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "operator"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "operator"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "operator", 
+        "pi", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          1
+        ], 
+        "pi": 3.142, 
+        "e": 2.718
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "operator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "operator", 
+        "pi", 
+        "e", 
+        "pie"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          1
+        ], 
+        "pi": 3.142, 
+        "e": 2.718, 
+        "pie": 5.860
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "operator"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/pie-test.golden_py3 b/v3/tests/backend-tests/pie-test.golden_py3
new file mode 100644
index 000000000..e913056f2
--- /dev/null
+++ b/v3/tests/backend-tests/pie-test.golden_py3
@@ -0,0 +1,91 @@
+{
+  "code": "import operator\nfrom math import pi, e\npie = operator.add(pi, e)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "operator"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "operator", 
+        "pi", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          1
+        ], 
+        "pi": 3.142, 
+        "e": 2.718
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "operator", 
+        "pi", 
+        "e", 
+        "pie"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "operator": [
+          "REF", 
+          1
+        ], 
+        "pi": 3.142, 
+        "e": 2.718, 
+        "pie": 5.860
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/pie-test.txt b/v3/tests/backend-tests/pie-test.txt
new file mode 100644
index 000000000..a73f77ec2
--- /dev/null
+++ b/v3/tests/backend-tests/pie-test.txt
@@ -0,0 +1,3 @@
+import operator
+from math import pi, e
+pie = operator.add(pi, e)
diff --git a/v3/tests/backend-tests/py-modules.golden b/v3/tests/backend-tests/py-modules.golden
new file mode 100644
index 000000000..6f5f87c33
--- /dev/null
+++ b/v3/tests/backend-tests/py-modules.golden
@@ -0,0 +1,132 @@
+{
+  "code": "# test to make sure nothing crashes when tracing code in pure-Python\n# function calls imported from modules\nimport random\nrandom.randint(10, 100)\n\nfrom re import compile\nx = compile('foo')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "random"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "random"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random", 
+        "compile"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "compile": [
+          "REF", 
+          2
+        ], 
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "random"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "compile(pattern, flags)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random", 
+        "compile", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "compile": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "random"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "compile(pattern, flags)", 
+          null
+        ], 
+        "3": [
+          "_sre.SRE_Pattern", 
+          "<_sre.SRE_Pattern object at 0xADDR>"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/py-modules.golden_py3 b/v3/tests/backend-tests/py-modules.golden_py3
new file mode 100644
index 000000000..e8551d9ee
--- /dev/null
+++ b/v3/tests/backend-tests/py-modules.golden_py3
@@ -0,0 +1,132 @@
+{
+  "code": "# test to make sure nothing crashes when tracing code in pure-Python\n# function calls imported from modules\nimport random\nrandom.randint(10, 100)\n\nfrom re import compile\nx = compile('foo')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random", 
+        "compile"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "compile": [
+          "REF", 
+          2
+        ], 
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "compile(pattern, flags)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "random", 
+        "compile", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "compile": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          3
+        ], 
+        "random": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "compile(pattern, flags)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "SRE_Pattern"
+        ]
+      }, 
+      "line": 7, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/py-modules.txt b/v3/tests/backend-tests/py-modules.txt
new file mode 100644
index 000000000..eb4211809
--- /dev/null
+++ b/v3/tests/backend-tests/py-modules.txt
@@ -0,0 +1,7 @@
+# test to make sure nothing crashes when tracing code in pure-Python
+# function calls imported from modules
+import random
+random.randint(10, 100)
+
+from re import compile
+x = compile('foo')
diff --git a/v3/tests/backend-tests/py3_func_annotations.golden b/v3/tests/backend-tests/py3_func_annotations.golden
new file mode 100644
index 000000000..a62687849
--- /dev/null
+++ b/v3/tests/backend-tests/py3_func_annotations.golden
@@ -0,0 +1,11 @@
+{
+  "code": "# test case of Python 3 function annotations inspired by David G. Kay\ndef remove_by_name(L: 'list of Restaurant', name: str) -> 'list of Restaurant':\n    \"\"\" Given name, remove all Restaurants with that name from collection.\n    \"\"\"\n    result = []\n    for r in L:\n        if r.name != name:\n            result.append(r)\n    return result\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 2)", 
+      "line": 2, 
+      "event": "uncaught_exception", 
+      "offset": 21
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/py3_func_annotations.golden_py3 b/v3/tests/backend-tests/py3_func_annotations.golden_py3
new file mode 100644
index 000000000..20571a78e
--- /dev/null
+++ b/v3/tests/backend-tests/py3_func_annotations.golden_py3
@@ -0,0 +1,38 @@
+{
+  "code": "# test case of Python 3 function annotations inspired by David G. Kay\ndef remove_by_name(L: 'list of Restaurant', name: str) -> 'list of Restaurant':\n    \"\"\" Given name, remove all Restaurants with that name from collection.\n    \"\"\"\n    result = []\n    for r in L:\n        if r.name != name:\n            result.append(r)\n    return result\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "remove_by_name"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "remove_by_name": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "remove_by_name(L, name)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/py3_func_annotations.txt b/v3/tests/backend-tests/py3_func_annotations.txt
new file mode 100644
index 000000000..24037afbf
--- /dev/null
+++ b/v3/tests/backend-tests/py3_func_annotations.txt
@@ -0,0 +1,9 @@
+# test case of Python 3 function annotations inspired by David G. Kay
+def remove_by_name(L: 'list of Restaurant', name: str) -> 'list of Restaurant':
+    """ Given name, remove all Restaurants with that name from collection.
+    """
+    result = []
+    for r in L:
+        if r.name != name:
+            result.append(r)
+    return result
diff --git a/v3/tests/backend-tests/py3_kwonly_args.golden b/v3/tests/backend-tests/py3_kwonly_args.golden
new file mode 100644
index 000000000..f8bfc9a22
--- /dev/null
+++ b/v3/tests/backend-tests/py3_kwonly_args.golden
@@ -0,0 +1,11 @@
+{
+  "code": "# Python 3 keyword-only arguments\ndef my_sorted(iterable, *, reverse=False, key=None):\n  pass\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 2)", 
+      "line": 2, 
+      "event": "uncaught_exception", 
+      "offset": 26
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/py3_kwonly_args.golden_py3 b/v3/tests/backend-tests/py3_kwonly_args.golden_py3
new file mode 100644
index 000000000..2affddfb3
--- /dev/null
+++ b/v3/tests/backend-tests/py3_kwonly_args.golden_py3
@@ -0,0 +1,38 @@
+{
+  "code": "# Python 3 keyword-only arguments\ndef my_sorted(iterable, *, reverse=False, key=None):\n  pass\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "my_sorted"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "my_sorted": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "my_sorted(iterable, reverse, key)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/py3_kwonly_args.txt b/v3/tests/backend-tests/py3_kwonly_args.txt
new file mode 100644
index 000000000..e49a8d85a
--- /dev/null
+++ b/v3/tests/backend-tests/py3_kwonly_args.txt
@@ -0,0 +1,3 @@
+# Python 3 keyword-only arguments
+def my_sorted(iterable, *, reverse=False, key=None):
+  pass
diff --git a/v3/tests/backend-tests/raw_input_with_weird_params.golden b/v3/tests/backend-tests/raw_input_with_weird_params.golden
new file mode 100644
index 000000000..e48e5be4e
--- /dev/null
+++ b/v3/tests/backend-tests/raw_input_with_weird_params.golden
@@ -0,0 +1,19 @@
+{
+  "code": "# these showed up in my server logs as errors:\n\nmax = raw_input(max) # max is a built-in function\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "prompt": "<built-in function max>", 
+      "event": "raw_input"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/raw_input_with_weird_params.golden_py3 b/v3/tests/backend-tests/raw_input_with_weird_params.golden_py3
new file mode 100644
index 000000000..92b62f980
--- /dev/null
+++ b/v3/tests/backend-tests/raw_input_with_weird_params.golden_py3
@@ -0,0 +1,26 @@
+{
+  "code": "# these showed up in my server logs as errors:\n\nmax = raw_input(max) # max is a built-in function\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "exception_msg": "NameError: name 'raw_input' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/raw_input_with_weird_params.txt b/v3/tests/backend-tests/raw_input_with_weird_params.txt
new file mode 100644
index 000000000..ba59bd0ee
--- /dev/null
+++ b/v3/tests/backend-tests/raw_input_with_weird_params.txt
@@ -0,0 +1,3 @@
+# these showed up in my server logs as errors:
+
+max = raw_input(max) # max is a built-in function
diff --git a/v3/tests/backend-tests/restaurants.golden b/v3/tests/backend-tests/restaurants.golden
new file mode 100644
index 000000000..a61d5783f
--- /dev/null
+++ b/v3/tests/backend-tests/restaurants.golden
@@ -0,0 +1,5802 @@
+{
+  "code": "# Adapted from an example by David G. Kay\nfrom collections import namedtuple\n\nRestaurant = namedtuple('Restaurant', 'name cuisine phone dish price')\n\nR1 = Restaurant(\"Taillevent\", \"French\", \"343-3434\", \"Escargots\", 24.50)\nR2 = Restaurant(\"La Tour D'Argent\", \"French\", \"343-3344\", \"Ris de Veau\", 48.50)\nR3 = Restaurant(\"Pascal\", \"French\", \"333-4444\", \"Bouillabaisse\", 32.00)\nR4 = Restaurant(\"Thai Touch\", \"Thai\", \"444-3333\", \"Mee Krob\", 10.95)\nR5 = Restaurant(\"Thai Dishes\", \"Thai\", \"333-4433\", \"Paht Woon Sen\",  8.50)\nR6 = Restaurant(\"Thai Spoon\", \"Thai\", \"334-3344\", \"Mussamun\", 9.00)\n\nRL = [R1, R2, R3, R4, R5, R6]\n\nFrenchRestaurants = [r for r in RL if r.cuisine==\"French\"]\nprint(FrenchRestaurants)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "r": [
+          "REF", 
+          17
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "r": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "r": [
+          "REF", 
+          19
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "r": [
+          "REF", 
+          20
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "r": [
+          "REF", 
+          21
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "r": [
+          "REF", 
+          22
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r", 
+        "FrenchRestaurants"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "FrenchRestaurants": [
+          "REF", 
+          24
+        ], 
+        "r": [
+          "REF", 
+          22
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ]
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "r", 
+        "FrenchRestaurants"
+      ], 
+      "stdout": "[Restaurant(name='Taillevent', cuisine='French', phone='343-3434', dish='Escargots', price=24.5), Restaurant(name=\"La Tour D'Argent\", cuisine='French', phone='343-3344', dish='Ris de Veau', price=48.5), Restaurant(name='Pascal', cuisine='French', phone='333-4444', dish='Bouillabaisse', price=32.0)]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          20
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          22
+        ], 
+        "R1": [
+          "REF", 
+          17
+        ], 
+        "R2": [
+          "REF", 
+          18
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          19
+        ], 
+        "FrenchRestaurants": [
+          "REF", 
+          24
+        ], 
+        "r": [
+          "REF", 
+          22
+        ], 
+        "R5": [
+          "REF", 
+          21
+        ], 
+        "RL": [
+          "REF", 
+          23
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__getstate__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              16
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "FUNCTION", 
+          "__getstate__(self)", 
+          null
+        ], 
+        "5": [
+          "staticmethod", 
+          "<staticmethod object at 0xADDR>"
+        ], 
+        "6": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "7": [
+          "TUPLE"
+        ], 
+        "8": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "9": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "10": [
+          "classmethod", 
+          "<classmethod object at 0xADDR>"
+        ], 
+        "11": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "12": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "13": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "14": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "15": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "16": [
+          "property", 
+          "<property object at 0xADDR>"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Escargots"
+          ], 
+          [
+            "name", 
+            "Taillevent"
+          ], 
+          [
+            "phone", 
+            "343-3434"
+          ], 
+          [
+            "price", 
+            24.500
+          ]
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Ris de Veau"
+          ], 
+          [
+            "name", 
+            "La Tour D'Argent"
+          ], 
+          [
+            "phone", 
+            "343-3344"
+          ], 
+          [
+            "price", 
+            48.500
+          ]
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "French"
+          ], 
+          [
+            "dish", 
+            "Bouillabaisse"
+          ], 
+          [
+            "name", 
+            "Pascal"
+          ], 
+          [
+            "phone", 
+            "333-4444"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "32.0"
+            ]
+          ]
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mee Krob"
+          ], 
+          [
+            "name", 
+            "Thai Touch"
+          ], 
+          [
+            "phone", 
+            "444-3333"
+          ], 
+          [
+            "price", 
+            10.950
+          ]
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Paht Woon Sen"
+          ], 
+          [
+            "name", 
+            "Thai Dishes"
+          ], 
+          [
+            "phone", 
+            "333-4433"
+          ], 
+          [
+            "price", 
+            8.500
+          ]
+        ], 
+        "22": [
+          "INSTANCE", 
+          "Restaurant", 
+          [
+            "cuisine", 
+            "Thai"
+          ], 
+          [
+            "dish", 
+            "Mussamun"
+          ], 
+          [
+            "name", 
+            "Thai Spoon"
+          ], 
+          [
+            "phone", 
+            "334-3344"
+          ], 
+          [
+            "price", 
+            [
+              "SPECIAL_FLOAT", 
+              "9.0"
+            ]
+          ]
+        ], 
+        "23": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ], 
+          [
+            "REF", 
+            22
+          ]
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ]
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/restaurants.golden_py3 b/v3/tests/backend-tests/restaurants.golden_py3
new file mode 100644
index 000000000..260b288b5
--- /dev/null
+++ b/v3/tests/backend-tests/restaurants.golden_py3
@@ -0,0 +1,5076 @@
+{
+  "code": "# Adapted from an example by David G. Kay\nfrom collections import namedtuple\n\nRestaurant = namedtuple('Restaurant', 'name cuisine phone dish price')\n\nR1 = Restaurant(\"Taillevent\", \"French\", \"343-3434\", \"Escargots\", 24.50)\nR2 = Restaurant(\"La Tour D'Argent\", \"French\", \"343-3344\", \"Ris de Veau\", 48.50)\nR3 = Restaurant(\"Pascal\", \"French\", \"333-4444\", \"Bouillabaisse\", 32.00)\nR4 = Restaurant(\"Thai Touch\", \"Thai\", \"444-3333\", \"Mee Krob\", 10.95)\nR5 = Restaurant(\"Thai Dishes\", \"Thai\", \"333-4433\", \"Paht Woon Sen\",  8.50)\nR6 = Restaurant(\"Thai Spoon\", \"Thai\", \"334-3344\", \"Mussamun\", 9.00)\n\nRL = [R1, R2, R3, R4, R5, R6]\n\nFrenchRestaurants = [r for r in RL if r.cuisine==\"French\"]\nprint(FrenchRestaurants)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "r": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "r": [
+              "REF", 
+              17
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "r": [
+              "REF", 
+              18
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "r": [
+              "REF", 
+              19
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "r": [
+              "REF", 
+              20
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "r": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL"
+      ], 
+      "stdout": "", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              23
+            ], 
+            "__return__": [
+              "REF", 
+              24
+            ], 
+            "r": [
+              "REF", 
+              21
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "r", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "23": [
+          "INSTANCE", 
+          "list_iterator"
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ]
+        ]
+      }, 
+      "line": 15, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "FrenchRestaurants"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "FrenchRestaurants": [
+          "REF", 
+          24
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ]
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "namedtuple", 
+        "Restaurant", 
+        "R1", 
+        "R2", 
+        "R3", 
+        "R4", 
+        "R5", 
+        "R6", 
+        "RL", 
+        "FrenchRestaurants"
+      ], 
+      "stdout": "[Restaurant(name='Taillevent', cuisine='French', phone='343-3434', dish='Escargots', price=24.5), Restaurant(name=\"La Tour D'Argent\", cuisine='French', phone='343-3344', dish='Ris de Veau', price=48.5), Restaurant(name='Pascal', cuisine='French', phone='333-4444', dish='Bouillabaisse', price=32.0)]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "R4": [
+          "REF", 
+          19
+        ], 
+        "namedtuple": [
+          "REF", 
+          1
+        ], 
+        "R6": [
+          "REF", 
+          21
+        ], 
+        "R1": [
+          "REF", 
+          16
+        ], 
+        "R2": [
+          "REF", 
+          17
+        ], 
+        "Restaurant": [
+          "REF", 
+          2
+        ], 
+        "R3": [
+          "REF", 
+          18
+        ], 
+        "FrenchRestaurants": [
+          "REF", 
+          24
+        ], 
+        "R5": [
+          "REF", 
+          20
+        ], 
+        "RL": [
+          "REF", 
+          22
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "namedtuple(typename, field_names, verbose, rename)", 
+          null
+        ], 
+        "2": [
+          "CLASS", 
+          "Restaurant", 
+          [
+            "tuple"
+          ], 
+          [
+            "__getnewargs__", 
+            [
+              "REF", 
+              3
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__repr__", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "__slots__", 
+            [
+              "REF", 
+              6
+            ]
+          ], 
+          [
+            "_asdict", 
+            [
+              "REF", 
+              7
+            ]
+          ], 
+          [
+            "_fields", 
+            [
+              "REF", 
+              8
+            ]
+          ], 
+          [
+            "_make", 
+            [
+              "REF", 
+              9
+            ]
+          ], 
+          [
+            "_replace", 
+            [
+              "REF", 
+              10
+            ]
+          ], 
+          [
+            "cuisine", 
+            [
+              "REF", 
+              11
+            ]
+          ], 
+          [
+            "dish", 
+            [
+              "REF", 
+              12
+            ]
+          ], 
+          [
+            "name", 
+            [
+              "REF", 
+              13
+            ]
+          ], 
+          [
+            "phone", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "price", 
+            [
+              "REF", 
+              15
+            ]
+          ]
+        ], 
+        "3": [
+          "FUNCTION", 
+          "__getnewargs__(self)", 
+          null
+        ], 
+        "4": [
+          "INSTANCE", 
+          "staticmethod"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__repr__(self)", 
+          null
+        ], 
+        "6": [
+          "TUPLE"
+        ], 
+        "7": [
+          "FUNCTION", 
+          "_asdict(self)", 
+          null
+        ], 
+        "8": [
+          "TUPLE", 
+          "name", 
+          "cuisine", 
+          "phone", 
+          "dish", 
+          "price"
+        ], 
+        "9": [
+          "INSTANCE", 
+          "classmethod"
+        ], 
+        "10": [
+          "FUNCTION", 
+          "_replace(_self, **kwds)", 
+          null
+        ], 
+        "11": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "12": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "13": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "14": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "15": [
+          "INSTANCE", 
+          "property"
+        ], 
+        "16": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "17": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "18": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "19": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "20": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "21": [
+          "INSTANCE", 
+          "Restaurant"
+        ], 
+        "22": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ], 
+          [
+            "REF", 
+            19
+          ], 
+          [
+            "REF", 
+            20
+          ], 
+          [
+            "REF", 
+            21
+          ]
+        ], 
+        "24": [
+          "LIST", 
+          [
+            "REF", 
+            16
+          ], 
+          [
+            "REF", 
+            17
+          ], 
+          [
+            "REF", 
+            18
+          ]
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/restaurants.txt b/v3/tests/backend-tests/restaurants.txt
new file mode 100644
index 000000000..3d7c3b186
--- /dev/null
+++ b/v3/tests/backend-tests/restaurants.txt
@@ -0,0 +1,16 @@
+# Adapted from an example by David G. Kay
+from collections import namedtuple
+
+Restaurant = namedtuple('Restaurant', 'name cuisine phone dish price')
+
+R1 = Restaurant("Taillevent", "French", "343-3434", "Escargots", 24.50)
+R2 = Restaurant("La Tour D'Argent", "French", "343-3344", "Ris de Veau", 48.50)
+R3 = Restaurant("Pascal", "French", "333-4444", "Bouillabaisse", 32.00)
+R4 = Restaurant("Thai Touch", "Thai", "444-3333", "Mee Krob", 10.95)
+R5 = Restaurant("Thai Dishes", "Thai", "333-4433", "Paht Woon Sen",  8.50)
+R6 = Restaurant("Thai Spoon", "Thai", "334-3344", "Mussamun", 9.00)
+
+RL = [R1, R2, R3, R4, R5, R6]
+
+FrenchRestaurants = [r for r in RL if r.cuisine=="French"]
+print(FrenchRestaurants)
diff --git a/v3/tests/backend-tests/runtime_error.golden b/v3/tests/backend-tests/runtime_error.golden
new file mode 100644
index 000000000..c26590156
--- /dev/null
+++ b/v3/tests/backend-tests/runtime_error.golden
@@ -0,0 +1,440 @@
+{
+  "code": "x = 5\nfor i in range(10):\n  if i == x:\n    z = x + y # ERROR!\n  else:\n    z = i\n  print(z)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "exception_msg": "NameError: name 'y' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/runtime_error.golden_py3 b/v3/tests/backend-tests/runtime_error.golden_py3
new file mode 100644
index 000000000..c26590156
--- /dev/null
+++ b/v3/tests/backend-tests/runtime_error.golden_py3
@@ -0,0 +1,440 @@
+{
+  "code": "x = 5\nfor i in range(10):\n  if i == x:\n    z = x + y # ERROR!\n  else:\n    z = i\n  print(z)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 0
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 1
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 2
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 3
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "i", 
+        "z"
+      ], 
+      "stdout": "0\n1\n2\n3\n4\n", 
+      "exception_msg": "NameError: name 'y' is not defined", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 4
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "exception"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/runtime_error.txt b/v3/tests/backend-tests/runtime_error.txt
new file mode 100644
index 000000000..d8be5bf4a
--- /dev/null
+++ b/v3/tests/backend-tests/runtime_error.txt
@@ -0,0 +1,8 @@
+x = 5
+for i in range(10):
+  if i == x:
+    z = x + y # ERROR!
+  else:
+    z = i
+  print(z)
+
diff --git a/v3/tests/backend-tests/set_test.golden b/v3/tests/backend-tests/set_test.golden
new file mode 100644
index 000000000..bf39a5207
--- /dev/null
+++ b/v3/tests/backend-tests/set_test.golden
@@ -0,0 +1,151 @@
+{
+  "code": "x = set()\nx.add('a')\nx.add('a')\nx.add('b')\nx.add('c')\nx.add('b')\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a", 
+          "b"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a", 
+          "c", 
+          "b"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a", 
+          "c", 
+          "b"
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/set_test.golden_py3 b/v3/tests/backend-tests/set_test.golden_py3
new file mode 100644
index 000000000..bf39a5207
--- /dev/null
+++ b/v3/tests/backend-tests/set_test.golden_py3
@@ -0,0 +1,151 @@
+{
+  "code": "x = set()\nx.add('a')\nx.add('a')\nx.add('b')\nx.add('c')\nx.add('b')\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a"
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a"
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a", 
+          "b"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a", 
+          "c", 
+          "b"
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "SET", 
+          "a", 
+          "c", 
+          "b"
+        ]
+      }, 
+      "line": 6, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/set_test.txt b/v3/tests/backend-tests/set_test.txt
new file mode 100644
index 000000000..72ca6fa0a
--- /dev/null
+++ b/v3/tests/backend-tests/set_test.txt
@@ -0,0 +1,7 @@
+x = set()
+x.add('a')
+x.add('a')
+x.add('b')
+x.add('c')
+x.add('b')
+
diff --git a/v3/tests/backend-tests/simple.golden b/v3/tests/backend-tests/simple.golden
new file mode 100644
index 000000000..c3f69caa6
--- /dev/null
+++ b/v3/tests/backend-tests/simple.golden
@@ -0,0 +1,501 @@
+{
+  "code": "x = 5\ny = 10\nz = x * y\nprint(\"HELLO WORLD\")\nfor i in range(10):\n  print(z * i)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "z": 50
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "HELLO WORLD\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "z": 50
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 8, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 8, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n450\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n450\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "y": 10, 
+        "z": 50, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/simple.golden_py3 b/v3/tests/backend-tests/simple.golden_py3
new file mode 100644
index 000000000..c3f69caa6
--- /dev/null
+++ b/v3/tests/backend-tests/simple.golden_py3
@@ -0,0 +1,501 @@
+{
+  "code": "x = 5\ny = 10\nz = x * y\nprint(\"HELLO WORLD\")\nfor i in range(10):\n  print(z * i)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "z": 50
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "HELLO WORLD\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "z": 50
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 0, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 1, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 2, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 3, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 4, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 5, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 6, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 7, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 8, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 8, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n450\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "x": 5, 
+        "z": 50, 
+        "y": 10
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "z", 
+        "i"
+      ], 
+      "stdout": "HELLO WORLD\n0\n50\n100\n150\n200\n250\n300\n350\n400\n450\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "i": 9, 
+        "y": 10, 
+        "z": 50, 
+        "x": 5
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/simple.txt b/v3/tests/backend-tests/simple.txt
new file mode 100644
index 000000000..8b7c08a7d
--- /dev/null
+++ b/v3/tests/backend-tests/simple.txt
@@ -0,0 +1,7 @@
+x = 5
+y = 10
+z = x * y
+print("HELLO WORLD")
+for i in range(10):
+  print(z * i)
+
diff --git a/v3/tests/backend-tests/three_lists.golden b/v3/tests/backend-tests/three_lists.golden
new file mode 100644
index 000000000..27775034e
--- /dev/null
+++ b/v3/tests/backend-tests/three_lists.golden
@@ -0,0 +1,632 @@
+{
+  "code": "# test case submitted by Peter Wentworth (p.wentworth@ru.ac.za)\n\ndef f(xs):\n    print(xs)\n\na = [10, 20, 30]\nb = a\nc = [10, 20, 30]\nd = 24\ne = (a, b, c)\n\nf(b)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "[10, 20, 30]\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "[10, 20, 30]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/three_lists.golden_py3 b/v3/tests/backend-tests/three_lists.golden_py3
new file mode 100644
index 000000000..27775034e
--- /dev/null
+++ b/v3/tests/backend-tests/three_lists.golden_py3
@@ -0,0 +1,632 @@
+{
+  "code": "# test case submitted by Peter Wentworth (p.wentworth@ru.ac.za)\n\ndef f(xs):\n    print(xs)\n\na = [10, 20, 30]\nb = a\nc = [10, 20, 30]\nd = 24\ne = (a, b, c)\n\nf(b)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 3, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "xs"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "[10, 20, 30]\n", 
+      "func_name": "f", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "xs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "f", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "f_f1", 
+          "ordered_varnames": [
+            "xs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "f", 
+        "a", 
+        "b", 
+        "c", 
+        "d", 
+        "e"
+      ], 
+      "stdout": "[10, 20, 30]\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "a": [
+          "REF", 
+          2
+        ], 
+        "c": [
+          "REF", 
+          3
+        ], 
+        "b": [
+          "REF", 
+          2
+        ], 
+        "e": [
+          "REF", 
+          4
+        ], 
+        "d": 24, 
+        "f": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "f(xs)", 
+          null
+        ], 
+        "2": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "3": [
+          "LIST", 
+          10, 
+          20, 
+          30
+        ], 
+        "4": [
+          "TUPLE", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            3
+          ]
+        ]
+      }, 
+      "line": 12, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/three_lists.txt b/v3/tests/backend-tests/three_lists.txt
new file mode 100644
index 000000000..388dffc20
--- /dev/null
+++ b/v3/tests/backend-tests/three_lists.txt
@@ -0,0 +1,13 @@
+# test case submitted by Peter Wentworth (p.wentworth@ru.ac.za)
+
+def f(xs):
+    print(xs)
+
+a = [10, 20, 30]
+b = a
+c = [10, 20, 30]
+d = 24
+e = (a, b, c)
+
+f(b)
+
diff --git a/v3/tests/backend-tests/ttt_min.golden b/v3/tests/backend-tests/ttt_min.golden
new file mode 100644
index 000000000..0f751840d
--- /dev/null
+++ b/v3/tests/backend-tests/ttt_min.golden
@@ -0,0 +1,722 @@
+{
+  "code": "# minimal tic tac toe implementation and test\n\nimport ttt_module\n\ndef interactive_player(board, symbol):\n    return int(mouse_input(\"Click on board\"))\n                      \ng = ttt_module.TTTGame(interactive_player, interactive_player, verbose=True)\nprint(g.play())\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "ttt_module"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "ttt_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player", 
+        "g"
+      ], 
+      "stdout": "Initializing TTTGame\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "js_output": "$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})", 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "ttt_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "TTTGame", 
+          [
+            "board", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "lines", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "players", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "symbols", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "tomove", 
+            0
+          ], 
+          [
+            "verbose", 
+            true
+          ], 
+          [
+            "winner", 
+            null
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            6
+          ], 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            8
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            11
+          ], 
+          [
+            "REF", 
+            12
+          ], 
+          [
+            "REF", 
+            13
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          0, 
+          1, 
+          2
+        ], 
+        "7": [
+          "TUPLE", 
+          3, 
+          4, 
+          5
+        ], 
+        "8": [
+          "TUPLE", 
+          6, 
+          7, 
+          8
+        ], 
+        "9": [
+          "TUPLE", 
+          0, 
+          3, 
+          6
+        ], 
+        "10": [
+          "TUPLE", 
+          1, 
+          4, 
+          7
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          5, 
+          8
+        ], 
+        "12": [
+          "TUPLE", 
+          0, 
+          4, 
+          8
+        ], 
+        "13": [
+          "TUPLE", 
+          2, 
+          4, 
+          6
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "15": [
+          "LIST", 
+          "X", 
+          "O"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player", 
+        "g"
+      ], 
+      "html_output": "<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>", 
+      "stdout": "Initializing TTTGame\n<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>\n", 
+      "func_name": "interactive_player", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "symbol": "X", 
+            "board": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "interactive_player", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "interactive_player_f1", 
+          "ordered_varnames": [
+            "board", 
+            "symbol"
+          ]
+        }
+      ], 
+      "js_output": "$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})", 
+      "css_output": "#htmlOutputDiv table, #htmlOutputDiv td, #htmlOutputDiv th {\n  background-color: white;\n  border-collapse: collapse;\n  border: 2px solid black; }\n#htmlOutputDiv td, #htmlOutputDiv th {\n  width: 30px;\n  height: 30px;\n  font-family: sans-serif;\n  text-align: center; }", 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "ttt_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "TTTGame", 
+          [
+            "board", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "lines", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "players", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "symbols", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "tomove", 
+            0
+          ], 
+          [
+            "verbose", 
+            true
+          ], 
+          [
+            "winner", 
+            null
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            6
+          ], 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            8
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            11
+          ], 
+          [
+            "REF", 
+            12
+          ], 
+          [
+            "REF", 
+            13
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          0, 
+          1, 
+          2
+        ], 
+        "7": [
+          "TUPLE", 
+          3, 
+          4, 
+          5
+        ], 
+        "8": [
+          "TUPLE", 
+          6, 
+          7, 
+          8
+        ], 
+        "9": [
+          "TUPLE", 
+          0, 
+          3, 
+          6
+        ], 
+        "10": [
+          "TUPLE", 
+          1, 
+          4, 
+          7
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          5, 
+          8
+        ], 
+        "12": [
+          "TUPLE", 
+          0, 
+          4, 
+          8
+        ], 
+        "13": [
+          "TUPLE", 
+          2, 
+          4, 
+          6
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "15": [
+          "LIST", 
+          "X", 
+          "O"
+        ], 
+        "16": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player", 
+        "g"
+      ], 
+      "html_output": "<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>", 
+      "stdout": "Initializing TTTGame\n<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>\n", 
+      "func_name": "interactive_player", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "symbol": "X", 
+            "board": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "interactive_player", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "interactive_player_f1", 
+          "ordered_varnames": [
+            "board", 
+            "symbol"
+          ]
+        }
+      ], 
+      "js_output": "$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})", 
+      "css_output": "#htmlOutputDiv table, #htmlOutputDiv td, #htmlOutputDiv th {\n  background-color: white;\n  border-collapse: collapse;\n  border: 2px solid black; }\n#htmlOutputDiv td, #htmlOutputDiv th {\n  width: 30px;\n  height: 30px;\n  font-family: sans-serif;\n  text-align: center; }", 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "module", 
+          "ttt_module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "TTTGame", 
+          [
+            "board", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "lines", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "players", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "symbols", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "tomove", 
+            0
+          ], 
+          [
+            "verbose", 
+            true
+          ], 
+          [
+            "winner", 
+            null
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            6
+          ], 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            8
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            11
+          ], 
+          [
+            "REF", 
+            12
+          ], 
+          [
+            "REF", 
+            13
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          0, 
+          1, 
+          2
+        ], 
+        "7": [
+          "TUPLE", 
+          3, 
+          4, 
+          5
+        ], 
+        "8": [
+          "TUPLE", 
+          6, 
+          7, 
+          8
+        ], 
+        "9": [
+          "TUPLE", 
+          0, 
+          3, 
+          6
+        ], 
+        "10": [
+          "TUPLE", 
+          1, 
+          4, 
+          7
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          5, 
+          8
+        ], 
+        "12": [
+          "TUPLE", 
+          0, 
+          4, 
+          8
+        ], 
+        "13": [
+          "TUPLE", 
+          2, 
+          4, 
+          6
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "15": [
+          "LIST", 
+          "X", 
+          "O"
+        ], 
+        "16": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "prompt": "Click on board", 
+      "event": "mouse_input"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ttt_min.golden_py3 b/v3/tests/backend-tests/ttt_min.golden_py3
new file mode 100644
index 000000000..fc7d2d521
--- /dev/null
+++ b/v3/tests/backend-tests/ttt_min.golden_py3
@@ -0,0 +1,722 @@
+{
+  "code": "# minimal tic tac toe implementation and test\n\nimport ttt_module\n\ndef interactive_player(board, symbol):\n    return int(mouse_input(\"Click on board\"))\n                      \ng = ttt_module.TTTGame(interactive_player, interactive_player, verbose=True)\nprint(g.play())\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player", 
+        "g"
+      ], 
+      "stdout": "Initializing TTTGame\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "js_output": "$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})", 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "TTTGame", 
+          [
+            "board", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "lines", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "players", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "symbols", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "tomove", 
+            0
+          ], 
+          [
+            "verbose", 
+            true
+          ], 
+          [
+            "winner", 
+            null
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            6
+          ], 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            8
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            11
+          ], 
+          [
+            "REF", 
+            12
+          ], 
+          [
+            "REF", 
+            13
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          0, 
+          1, 
+          2
+        ], 
+        "7": [
+          "TUPLE", 
+          3, 
+          4, 
+          5
+        ], 
+        "8": [
+          "TUPLE", 
+          6, 
+          7, 
+          8
+        ], 
+        "9": [
+          "TUPLE", 
+          0, 
+          3, 
+          6
+        ], 
+        "10": [
+          "TUPLE", 
+          1, 
+          4, 
+          7
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          5, 
+          8
+        ], 
+        "12": [
+          "TUPLE", 
+          0, 
+          4, 
+          8
+        ], 
+        "13": [
+          "TUPLE", 
+          2, 
+          4, 
+          6
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "15": [
+          "LIST", 
+          "X", 
+          "O"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player", 
+        "g"
+      ], 
+      "html_output": "<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>", 
+      "stdout": "Initializing TTTGame\n<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>\n", 
+      "func_name": "interactive_player", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "symbol": "X", 
+            "board": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "interactive_player", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "interactive_player_f1", 
+          "ordered_varnames": [
+            "board", 
+            "symbol"
+          ]
+        }
+      ], 
+      "js_output": "$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})", 
+      "css_output": "#htmlOutputDiv table, #htmlOutputDiv td, #htmlOutputDiv th {\n  background-color: white;\n  border-collapse: collapse;\n  border: 2px solid black; }\n#htmlOutputDiv td, #htmlOutputDiv th {\n  width: 30px;\n  height: 30px;\n  font-family: sans-serif;\n  text-align: center; }", 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "TTTGame", 
+          [
+            "board", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "lines", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "players", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "symbols", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "tomove", 
+            0
+          ], 
+          [
+            "verbose", 
+            true
+          ], 
+          [
+            "winner", 
+            null
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            6
+          ], 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            8
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            11
+          ], 
+          [
+            "REF", 
+            12
+          ], 
+          [
+            "REF", 
+            13
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          0, 
+          1, 
+          2
+        ], 
+        "7": [
+          "TUPLE", 
+          3, 
+          4, 
+          5
+        ], 
+        "8": [
+          "TUPLE", 
+          6, 
+          7, 
+          8
+        ], 
+        "9": [
+          "TUPLE", 
+          0, 
+          3, 
+          6
+        ], 
+        "10": [
+          "TUPLE", 
+          1, 
+          4, 
+          7
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          5, 
+          8
+        ], 
+        "12": [
+          "TUPLE", 
+          0, 
+          4, 
+          8
+        ], 
+        "13": [
+          "TUPLE", 
+          2, 
+          4, 
+          6
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "15": [
+          "LIST", 
+          "X", 
+          "O"
+        ], 
+        "16": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "ttt_module", 
+        "interactive_player", 
+        "g"
+      ], 
+      "html_output": "<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>", 
+      "stdout": "Initializing TTTGame\n<TABLE><TR><TD id=0> </TD> <TD id=1> </TD> <TD id=2> </TD></TR> <TR><TD id=3> </TD> <TD id=4> </TD> <TD id=5> </TD></TR> <TR><TD id=6> </TD> <TD id=7> </TD> <TD id=8> </TD></TR></TABLE><P,>X to play</P,>\n", 
+      "func_name": "interactive_player", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "symbol": "X", 
+            "board": [
+              "REF", 
+              16
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "interactive_player", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "interactive_player_f1", 
+          "ordered_varnames": [
+            "board", 
+            "symbol"
+          ]
+        }
+      ], 
+      "js_output": "$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})", 
+      "css_output": "#htmlOutputDiv table, #htmlOutputDiv td, #htmlOutputDiv th {\n  background-color: white;\n  border-collapse: collapse;\n  border: 2px solid black; }\n#htmlOutputDiv td, #htmlOutputDiv th {\n  width: 30px;\n  height: 30px;\n  font-family: sans-serif;\n  text-align: center; }", 
+      "globals": {
+        "ttt_module": [
+          "REF", 
+          1
+        ], 
+        "g": [
+          "REF", 
+          3
+        ], 
+        "interactive_player": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "INSTANCE", 
+          "module"
+        ], 
+        "2": [
+          "FUNCTION", 
+          "interactive_player(board, symbol)", 
+          null
+        ], 
+        "3": [
+          "INSTANCE", 
+          "TTTGame", 
+          [
+            "board", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "lines", 
+            [
+              "REF", 
+              5
+            ]
+          ], 
+          [
+            "players", 
+            [
+              "REF", 
+              14
+            ]
+          ], 
+          [
+            "symbols", 
+            [
+              "REF", 
+              15
+            ]
+          ], 
+          [
+            "tomove", 
+            0
+          ], 
+          [
+            "verbose", 
+            true
+          ], 
+          [
+            "winner", 
+            null
+          ]
+        ], 
+        "4": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ], 
+        "5": [
+          "LIST", 
+          [
+            "REF", 
+            6
+          ], 
+          [
+            "REF", 
+            7
+          ], 
+          [
+            "REF", 
+            8
+          ], 
+          [
+            "REF", 
+            9
+          ], 
+          [
+            "REF", 
+            10
+          ], 
+          [
+            "REF", 
+            11
+          ], 
+          [
+            "REF", 
+            12
+          ], 
+          [
+            "REF", 
+            13
+          ]
+        ], 
+        "6": [
+          "TUPLE", 
+          0, 
+          1, 
+          2
+        ], 
+        "7": [
+          "TUPLE", 
+          3, 
+          4, 
+          5
+        ], 
+        "8": [
+          "TUPLE", 
+          6, 
+          7, 
+          8
+        ], 
+        "9": [
+          "TUPLE", 
+          0, 
+          3, 
+          6
+        ], 
+        "10": [
+          "TUPLE", 
+          1, 
+          4, 
+          7
+        ], 
+        "11": [
+          "TUPLE", 
+          2, 
+          5, 
+          8
+        ], 
+        "12": [
+          "TUPLE", 
+          0, 
+          4, 
+          8
+        ], 
+        "13": [
+          "TUPLE", 
+          2, 
+          4, 
+          6
+        ], 
+        "14": [
+          "LIST", 
+          [
+            "REF", 
+            2
+          ], 
+          [
+            "REF", 
+            2
+          ]
+        ], 
+        "15": [
+          "LIST", 
+          "X", 
+          "O"
+        ], 
+        "16": [
+          "LIST", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " ", 
+          " "
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "prompt": "Click on board", 
+      "event": "mouse_input"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/ttt_min.txt b/v3/tests/backend-tests/ttt_min.txt
new file mode 100644
index 000000000..b52529788
--- /dev/null
+++ b/v3/tests/backend-tests/ttt_min.txt
@@ -0,0 +1,9 @@
+# minimal tic tac toe implementation and test
+
+import ttt_module
+
+def interactive_player(board, symbol):
+    return int(mouse_input("Click on board"))
+                      
+g = ttt_module.TTTGame(interactive_player, interactive_player, verbose=True)
+print(g.play())
diff --git a/v3/tests/backend-tests/tuple_test.golden b/v3/tests/backend-tests/tuple_test.golden
new file mode 100644
index 000000000..f1c5b4fc3
--- /dev/null
+++ b/v3/tests/backend-tests/tuple_test.golden
@@ -0,0 +1,72 @@
+{
+  "code": "x = (1, 2, 3)\ny = (4,)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "TUPLE", 
+          4
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/tuple_test.golden_py3 b/v3/tests/backend-tests/tuple_test.golden_py3
new file mode 100644
index 000000000..f1c5b4fc3
--- /dev/null
+++ b/v3/tests/backend-tests/tuple_test.golden_py3
@@ -0,0 +1,72 @@
+{
+  "code": "x = (1, 2, 3)\ny = (4,)\n\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2, 
+          3
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": [
+          "REF", 
+          2
+        ], 
+        "x": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "TUPLE", 
+          1, 
+          2, 
+          3
+        ], 
+        "2": [
+          "TUPLE", 
+          4
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/tuple_test.txt b/v3/tests/backend-tests/tuple_test.txt
new file mode 100644
index 000000000..de68176ca
--- /dev/null
+++ b/v3/tests/backend-tests/tuple_test.txt
@@ -0,0 +1,3 @@
+x = (1, 2, 3)
+y = (4,)
+
diff --git a/v3/tests/backend-tests/two_funcs.golden b/v3/tests/backend-tests/two_funcs.golden
new file mode 100644
index 000000000..9a2a15184
--- /dev/null
+++ b/v3/tests/backend-tests/two_funcs.golden
@@ -0,0 +1,1453 @@
+{
+  "code": "def add(a, b, c):\n  d = a + b\n  return c + d\n\ndef double_add(a, b, c):\n  x = add(a, b, c)\n  y = add(a, b, c)\n  return x + y\n\nx = 5\ny = 10\nz = x * y\nprint(add(x, y, z))\nprint(double_add(x, y, z))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "add": [
+          "REF", 
+          1
+        ], 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10, 
+            "y": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "__return__": 130, 
+            "y": 65, 
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n130\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/two_funcs.golden_py3 b/v3/tests/backend-tests/two_funcs.golden_py3
new file mode 100644
index 000000000..9a2a15184
--- /dev/null
+++ b/v3/tests/backend-tests/two_funcs.golden_py3
@@ -0,0 +1,1453 @@
+{
+  "code": "def add(a, b, c):\n  d = a + b\n  return c + d\n\ndef double_add(a, b, c):\n  x = add(a, b, c)\n  y = add(a, b, c)\n  return x + y\n\nx = 5\ny = 10\nz = x * y\nprint(add(x, y, z))\nprint(double_add(x, y, z))\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "add": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "add": [
+          "REF", 
+          1
+        ], 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 11, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f1", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 5, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }, 
+        {
+          "frame_id": 3, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f3", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10
+          }, 
+          "is_highlighted": false, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x"
+          ]
+        }, 
+        {
+          "frame_id": 4, 
+          "encoded_locals": {
+            "a": 5, 
+            "__return__": 65, 
+            "c": 50, 
+            "b": 10, 
+            "d": 15
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "add_f4", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "d", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 3, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "x": 65, 
+            "c": 50, 
+            "b": 10, 
+            "y": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x", 
+            "y"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n", 
+      "func_name": "double_add", 
+      "stack_to_render": [
+        {
+          "frame_id": 2, 
+          "encoded_locals": {
+            "a": 5, 
+            "c": 50, 
+            "b": 10, 
+            "__return__": 130, 
+            "y": 65, 
+            "x": 65
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "double_add", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "double_add_f2", 
+          "ordered_varnames": [
+            "a", 
+            "b", 
+            "c", 
+            "x", 
+            "y", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "add", 
+        "double_add", 
+        "x", 
+        "y", 
+        "z"
+      ], 
+      "stdout": "65\n130\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": 10, 
+        "x": 5, 
+        "add": [
+          "REF", 
+          1
+        ], 
+        "z": 50, 
+        "double_add": [
+          "REF", 
+          2
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "add(a, b, c)", 
+          null
+        ], 
+        "2": [
+          "FUNCTION", 
+          "double_add(a, b, c)", 
+          null
+        ]
+      }, 
+      "line": 14, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/two_funcs.txt b/v3/tests/backend-tests/two_funcs.txt
new file mode 100644
index 000000000..32959fbd6
--- /dev/null
+++ b/v3/tests/backend-tests/two_funcs.txt
@@ -0,0 +1,14 @@
+def add(a, b, c):
+  d = a + b
+  return c + d
+
+def double_add(a, b, c):
+  x = add(a, b, c)
+  y = add(a, b, c)
+  return x + y
+
+x = 5
+y = 10
+z = x * y
+print(add(x, y, z))
+print(double_add(x, y, z))
diff --git a/v3/tests/backend-tests/unicode-py2-ultimate.golden b/v3/tests/backend-tests/unicode-py2-ultimate.golden
new file mode 100644
index 000000000..5dcd837e5
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py2-ultimate.golden
@@ -0,0 +1,1925 @@
+{
+  "code": "# The ultimate Unicode test for Python 2\n\nx = '\u263a' # this is a REGULAR str with some funky bytes, NOT a smiley\ny = u'\u263a' # this is a unicode string U+263A representing a smiley\nprint x\nprint y\nassert x != y\n\nx_lst = [x]\nx_lst *= 3\n\nz = '\\x8e' # this string isn't valid unicode\nprint z\n\nprint x, y, z\n\nxyz_lst = [x, y, z]\nxyz_lst *= 3\ntypes_lst = [repr(type(e)) for e in xyz_lst]\nprint xyz_lst\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "z": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 13, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "z": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "y": "\u00e2\u0098\u00ba", 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "z": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 18, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\u263a", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\u00e2\u0098\u00ba", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\u263a", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\u00e2\u0098\u00ba", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\u263a", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\u00e2\u0098\u00ba", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd"
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 19, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e", 
+        "types_lst"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd", 
+        "types_lst": [
+          "REF", 
+          8
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ], 
+        "8": [
+          "LIST", 
+          "<type 'str'>", 
+          "<type 'unicode'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'unicode'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'unicode'>", 
+          "<type 'str'>"
+        ]
+      }, 
+      "line": 20, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "y", 
+        "__warningregistry__", 
+        "x_lst", 
+        "z", 
+        "xyz_lst", 
+        "e", 
+        "types_lst"
+      ], 
+      "stdout": "\u263a\n\u00e2\u0098\u00ba\n\ufffd\n\u263a \u00e2\u0098\u00ba \ufffd\n['\\xe2\\x98\\xba', u'\\xe2\\x98\\xba', '\\x8e', '\\xe2\\x98\\xba', u'\\xe2\\x98\\xba', '\\x8e', '\\xe2\\x98\\xba', u'\\xe2\\x98\\xba', '\\x8e']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "__warningregistry__": [
+          "REF", 
+          1
+        ], 
+        "x_lst": [
+          "REF", 
+          6
+        ], 
+        "xyz_lst": [
+          "REF", 
+          7
+        ], 
+        "y": "\u00e2\u0098\u00ba", 
+        "x": "\u263a", 
+        "z": "\ufffd", 
+        "types_lst": [
+          "REF", 
+          8
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "DICT", 
+          [
+            [
+              "REF", 
+              2
+            ], 
+            true
+          ]
+        ], 
+        "2": [
+          "TUPLE", 
+          "Unicode unequal comparison failed to convert both arguments to Unicode - interpreting them as being unequal", 
+          [
+            "REF", 
+            3
+          ], 
+          7
+        ], 
+        "3": [
+          "CLASS", 
+          "UnicodeWarning", 
+          [
+            "Warning"
+          ], 
+          [
+            "__init__", 
+            [
+              "REF", 
+              4
+            ]
+          ], 
+          [
+            "__new__", 
+            [
+              "REF", 
+              5
+            ]
+          ]
+        ], 
+        "4": [
+          "wrapper_descriptor", 
+          "<slot wrapper '__init__' of 'exceptions.UnicodeWarning' objects>"
+        ], 
+        "5": [
+          "FUNCTION", 
+          "__new__(...)", 
+          null
+        ], 
+        "6": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "7": [
+          "LIST", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd", 
+          "\u263a", 
+          "\u00e2\u0098\u00ba", 
+          "\ufffd"
+        ], 
+        "8": [
+          "LIST", 
+          "<type 'str'>", 
+          "<type 'unicode'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'unicode'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'unicode'>", 
+          "<type 'str'>"
+        ]
+      }, 
+      "line": 20, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py2-ultimate.golden_py3 b/v3/tests/backend-tests/unicode-py2-ultimate.golden_py3
new file mode 100644
index 000000000..c11f5ba9f
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py2-ultimate.golden_py3
@@ -0,0 +1,11 @@
+{
+  "code": "# The ultimate Unicode test for Python 2\n\nx = '\u263a' # this is a REGULAR str with some funky bytes, NOT a smiley\ny = u'\u263a' # this is a unicode string U+263A representing a smiley\nprint x\nprint y\nassert x != y\n\nx_lst = [x]\nx_lst *= 3\n\nz = '\\x8e' # this string isn't valid unicode\nprint z\n\nprint x, y, z\n\nxyz_lst = [x, y, z]\nxyz_lst *= 3\ntypes_lst = [repr(type(e)) for e in xyz_lst]\nprint xyz_lst\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 4)", 
+      "line": 4, 
+      "event": "uncaught_exception", 
+      "offset": 10
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py2-ultimate.txt b/v3/tests/backend-tests/unicode-py2-ultimate.txt
new file mode 100644
index 000000000..dba4df33f
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py2-ultimate.txt
@@ -0,0 +1,20 @@
+# The ultimate Unicode test for Python 2
+
+x = '☺' # this is a REGULAR str with some funky bytes, NOT a smiley
+y = u'☺' # this is a unicode string U+263A representing a smiley
+print x
+print y
+assert x != y
+
+x_lst = [x]
+x_lst *= 3
+
+z = '\x8e' # this string isn't valid unicode
+print z
+
+print x, y, z
+
+xyz_lst = [x, y, z]
+xyz_lst *= 3
+types_lst = [repr(type(e)) for e in xyz_lst]
+print xyz_lst
diff --git a/v3/tests/backend-tests/unicode-py2.golden b/v3/tests/backend-tests/unicode-py2.golden
new file mode 100644
index 000000000..fe9905ab0
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py2.golden
@@ -0,0 +1,163 @@
+{
+  "code": "# for Python 2 only\nyinyang = u'\\u262F'\nsmiley = '''\u263a'''\nfrownie = u'\\u2639'\nheart = r'\u2661'\n\nlst = [smiley, frownie]\nlst2 = lst * 5\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "smiley": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "frownie": "\u2639", 
+        "smiley": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "heart": "\u2661", 
+        "smiley": "\u263a", 
+        "frownie": "\u2639"
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart", 
+        "lst"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "heart": "\u2661", 
+        "lst": [
+          "REF", 
+          1
+        ], 
+        "smiley": "\u263a", 
+        "frownie": "\u2639"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u2639"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart", 
+        "lst", 
+        "lst2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "heart": "\u2661", 
+        "lst2": [
+          "REF", 
+          2
+        ], 
+        "smiley": "\u263a", 
+        "lst": [
+          "REF", 
+          1
+        ], 
+        "yinyang": "\u262f", 
+        "frownie": "\u2639"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u2639"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639"
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py2.golden_py3 b/v3/tests/backend-tests/unicode-py2.golden_py3
new file mode 100644
index 000000000..98ab39693
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py2.golden_py3
@@ -0,0 +1,11 @@
+{
+  "code": "# for Python 2 only\nyinyang = u'\\u262F'\nsmiley = '''\u263a'''\nfrownie = u'\\u2639'\nheart = r'\u2661'\n\nlst = [smiley, frownie]\nlst2 = lst * 5\n", 
+  "trace": [
+    {
+      "exception_msg": "SyntaxError: invalid syntax (<string>, line 2)", 
+      "line": 2, 
+      "event": "uncaught_exception", 
+      "offset": 19
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py2.txt b/v3/tests/backend-tests/unicode-py2.txt
new file mode 100644
index 000000000..e1ed0bbb5
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py2.txt
@@ -0,0 +1,8 @@
+# for Python 2 only
+yinyang = u'\u262F'
+smiley = '''☺'''
+frownie = u'\u2639'
+heart = r'♡'
+
+lst = [smiley, frownie]
+lst2 = lst * 5
diff --git a/v3/tests/backend-tests/unicode-py3-ultimate.golden b/v3/tests/backend-tests/unicode-py3-ultimate.golden
new file mode 100644
index 000000000..2847f4979
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py3-ultimate.golden
@@ -0,0 +1,637 @@
+{
+  "code": "# The ultimate Unicode test for Python 3\n\nx = '\u263a' # this is a unicode string U+263A representing a smiley\nprint(x)\n\nx_lst = [x]\nx_lst *= 3\n\nz = '\\x8e'\nprint(z)\n\nprint(x + ' ' + z)\n\nxz_lst = [x, z]\nxz_lst *= 3\ntypes_lst = [repr(type(e)) for e in xz_lst]\nprint(xz_lst)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "e": "\u263a", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "e": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "e": "\u263a", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "e": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "e": "\u263a", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\ufffd", 
+        "e": "\ufffd", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e", 
+        "types_lst"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x": "\u263a", 
+        "z": "\ufffd", 
+        "types_lst": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ], 
+        "3": [
+          "LIST", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "e", 
+        "types_lst"
+      ], 
+      "stdout": "\u263a\n\ufffd\n\u263a \ufffd\n['\\xe2\\x98\\xba', '\\x8e', '\\xe2\\x98\\xba', '\\x8e', '\\xe2\\x98\\xba', '\\x8e']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "e": "\ufffd", 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x": "\u263a", 
+        "z": "\ufffd", 
+        "types_lst": [
+          "REF", 
+          3
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd", 
+          "\u263a", 
+          "\ufffd"
+        ], 
+        "3": [
+          "LIST", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>", 
+          "<type 'str'>"
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py3-ultimate.golden_py3 b/v3/tests/backend-tests/unicode-py3-ultimate.golden_py3
new file mode 100644
index 000000000..13736dd43
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py3-ultimate.golden_py3
@@ -0,0 +1,982 @@
+{
+  "code": "# The ultimate Unicode test for Python 3\n\nx = '\u263a' # this is a unicode string U+263A representing a smiley\nprint(x)\n\nx_lst = [x]\nx_lst *= 3\n\nz = '\\x8e'\nprint(z)\n\nprint(x + ' ' + z)\n\nxz_lst = [x, z]\nxz_lst *= 3\ntypes_lst = [repr(type(e)) for e in xz_lst]\nprint(xz_lst)\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 6, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a"
+        ]
+      }, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 9, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 10, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\u008e\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 12, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ]
+      }, 
+      "line": 14, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e"
+        ]
+      }, 
+      "line": 15, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": "\u263a"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": "\u008e"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": "\u263a"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": "\u008e"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": "\u263a"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "e": "\u008e"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ]
+      }, 
+      "line": 16, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<listcomp>", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            ".0": [
+              "REF", 
+              3
+            ], 
+            "__return__": [
+              "REF", 
+              4
+            ], 
+            "e": "\u008e"
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "<listcomp>", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "<listcomp>_f1", 
+          "ordered_varnames": [
+            ".0", 
+            "e", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "3": [
+          "INSTANCE", 
+          "list_iterator"
+        ], 
+        "4": [
+          "LIST", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>"
+        ]
+      }, 
+      "line": 16, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "types_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "types_lst": [
+          "REF", 
+          4
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "4": [
+          "LIST", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>"
+        ]
+      }, 
+      "line": 17, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "x", 
+        "x_lst", 
+        "z", 
+        "xz_lst", 
+        "types_lst"
+      ], 
+      "stdout": "\u263a\n\u008e\n\u263a \u008e\n['\u263a', '\\x8e', '\u263a', '\\x8e', '\u263a', '\\x8e']\n", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "xz_lst": [
+          "REF", 
+          2
+        ], 
+        "x_lst": [
+          "REF", 
+          1
+        ], 
+        "z": "\u008e", 
+        "types_lst": [
+          "REF", 
+          4
+        ], 
+        "x": "\u263a"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u263a", 
+          "\u263a"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e", 
+          "\u263a", 
+          "\u008e"
+        ], 
+        "4": [
+          "LIST", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>", 
+          "<class 'str'>"
+        ]
+      }, 
+      "line": 17, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py3-ultimate.txt b/v3/tests/backend-tests/unicode-py3-ultimate.txt
new file mode 100644
index 000000000..fc8545566
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py3-ultimate.txt
@@ -0,0 +1,17 @@
+# The ultimate Unicode test for Python 3
+
+x = '☺' # this is a unicode string U+263A representing a smiley
+print(x)
+
+x_lst = [x]
+x_lst *= 3
+
+z = '\x8e'
+print(z)
+
+print(x + ' ' + z)
+
+xz_lst = [x, z]
+xz_lst *= 3
+types_lst = [repr(type(e)) for e in xz_lst]
+print(xz_lst)
diff --git a/v3/tests/backend-tests/unicode-py3.golden b/v3/tests/backend-tests/unicode-py3.golden
new file mode 100644
index 000000000..809d111c2
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py3.golden
@@ -0,0 +1,163 @@
+{
+  "code": "# for Python 3 only\nyinyang = '\\u262F'\nsmiley = '''\u263a'''\nfrownie = '\\u2639'\nheart = r'\u2661'\n\nlst = [smiley, frownie]\nlst2 = lst * 5\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\\u262F"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\\u262F", 
+        "smiley": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\\u262F", 
+        "frownie": "\\u2639", 
+        "smiley": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\\u262F", 
+        "heart": "\u2661", 
+        "smiley": "\u263a", 
+        "frownie": "\\u2639"
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart", 
+        "lst"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\\u262F", 
+        "heart": "\u2661", 
+        "lst": [
+          "REF", 
+          1
+        ], 
+        "smiley": "\u263a", 
+        "frownie": "\\u2639"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\\u2639"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart", 
+        "lst", 
+        "lst2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "heart": "\u2661", 
+        "lst2": [
+          "REF", 
+          2
+        ], 
+        "smiley": "\u263a", 
+        "lst": [
+          "REF", 
+          1
+        ], 
+        "yinyang": "\\u262F", 
+        "frownie": "\\u2639"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\\u2639"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\\u2639", 
+          "\u263a", 
+          "\\u2639", 
+          "\u263a", 
+          "\\u2639", 
+          "\u263a", 
+          "\\u2639", 
+          "\u263a", 
+          "\\u2639"
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py3.golden_py3 b/v3/tests/backend-tests/unicode-py3.golden_py3
new file mode 100644
index 000000000..8fe2d4c13
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py3.golden_py3
@@ -0,0 +1,163 @@
+{
+  "code": "# for Python 3 only\nyinyang = '\\u262F'\nsmiley = '''\u263a'''\nfrownie = '\\u2639'\nheart = r'\u2661'\n\nlst = [smiley, frownie]\nlst2 = lst * 5\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f"
+      }, 
+      "heap": {}, 
+      "line": 3, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "smiley": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "frownie": "\u2639", 
+        "smiley": "\u263a"
+      }, 
+      "heap": {}, 
+      "line": 5, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "heart": "\u2661", 
+        "smiley": "\u263a", 
+        "frownie": "\u2639"
+      }, 
+      "heap": {}, 
+      "line": 7, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart", 
+        "lst"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "yinyang": "\u262f", 
+        "heart": "\u2661", 
+        "lst": [
+          "REF", 
+          1
+        ], 
+        "smiley": "\u263a", 
+        "frownie": "\u2639"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u2639"
+        ]
+      }, 
+      "line": 8, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "yinyang", 
+        "smiley", 
+        "frownie", 
+        "heart", 
+        "lst", 
+        "lst2"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "heart": "\u2661", 
+        "lst2": [
+          "REF", 
+          2
+        ], 
+        "smiley": "\u263a", 
+        "lst": [
+          "REF", 
+          1
+        ], 
+        "yinyang": "\u262f", 
+        "frownie": "\u2639"
+      }, 
+      "heap": {
+        "1": [
+          "LIST", 
+          "\u263a", 
+          "\u2639"
+        ], 
+        "2": [
+          "LIST", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639", 
+          "\u263a", 
+          "\u2639"
+        ]
+      }, 
+      "line": 8, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/unicode-py3.txt b/v3/tests/backend-tests/unicode-py3.txt
new file mode 100644
index 000000000..3ab168d8f
--- /dev/null
+++ b/v3/tests/backend-tests/unicode-py3.txt
@@ -0,0 +1,8 @@
+# for Python 3 only
+yinyang = '\u262F'
+smiley = '''☺'''
+frownie = '\u2639'
+heart = r'♡'
+
+lst = [smiley, frownie]
+lst2 = lst * 5
diff --git a/v3/tests/backend-tests/varargs.golden b/v3/tests/backend-tests/varargs.golden
new file mode 100644
index 000000000..64cd90d22
--- /dev/null
+++ b/v3/tests/backend-tests/varargs.golden
@@ -0,0 +1,267 @@
+{
+  "code": "def parrot(mandatory, mandatory2, *args, **kwargs):\n  pass\n\nparrot('a', 'b', 'c', 'd', 'e', name='Philip', age='35')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "parrot", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              3
+            ], 
+            "mandatory": "a", 
+            "mandatory2": "b", 
+            "kwargs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "parrot", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "parrot_f1", 
+          "ordered_varnames": [
+            "mandatory", 
+            "mandatory2", 
+            "args", 
+            "kwargs"
+          ]
+        }
+      ], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "age", 
+            "35"
+          ], 
+          [
+            "name", 
+            "Philip"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          "c", 
+          "d", 
+          "e"
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "parrot", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              3
+            ], 
+            "mandatory": "a", 
+            "mandatory2": "b", 
+            "kwargs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "parrot", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "parrot_f1", 
+          "ordered_varnames": [
+            "mandatory", 
+            "mandatory2", 
+            "args", 
+            "kwargs"
+          ]
+        }
+      ], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "age", 
+            "35"
+          ], 
+          [
+            "name", 
+            "Philip"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          "c", 
+          "d", 
+          "e"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "parrot", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "args": [
+              "REF", 
+              3
+            ], 
+            "mandatory": "a", 
+            "mandatory2": "b", 
+            "kwargs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "parrot", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "parrot_f1", 
+          "ordered_varnames": [
+            "mandatory", 
+            "mandatory2", 
+            "args", 
+            "kwargs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "age", 
+            "35"
+          ], 
+          [
+            "name", 
+            "Philip"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          "c", 
+          "d", 
+          "e"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/varargs.golden_py3 b/v3/tests/backend-tests/varargs.golden_py3
new file mode 100644
index 000000000..64cd90d22
--- /dev/null
+++ b/v3/tests/backend-tests/varargs.golden_py3
@@ -0,0 +1,267 @@
+{
+  "code": "def parrot(mandatory, mandatory2, *args, **kwargs):\n  pass\n\nparrot('a', 'b', 'c', 'd', 'e', name='Philip', age='35')\n", 
+  "trace": [
+    {
+      "ordered_globals": [], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {}, 
+      "heap": {}, 
+      "line": 1, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "parrot", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              3
+            ], 
+            "mandatory": "a", 
+            "mandatory2": "b", 
+            "kwargs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "parrot", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "parrot_f1", 
+          "ordered_varnames": [
+            "mandatory", 
+            "mandatory2", 
+            "args", 
+            "kwargs"
+          ]
+        }
+      ], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "age", 
+            "35"
+          ], 
+          [
+            "name", 
+            "Philip"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          "c", 
+          "d", 
+          "e"
+        ]
+      }, 
+      "line": 1, 
+      "event": "call"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "parrot", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "args": [
+              "REF", 
+              3
+            ], 
+            "mandatory": "a", 
+            "mandatory2": "b", 
+            "kwargs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "parrot", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "parrot_f1", 
+          "ordered_varnames": [
+            "mandatory", 
+            "mandatory2", 
+            "args", 
+            "kwargs"
+          ]
+        }
+      ], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "age", 
+            "35"
+          ], 
+          [
+            "name", 
+            "Philip"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          "c", 
+          "d", 
+          "e"
+        ]
+      }, 
+      "line": 2, 
+      "event": "step_line"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "parrot", 
+      "stack_to_render": [
+        {
+          "frame_id": 1, 
+          "encoded_locals": {
+            "__return__": null, 
+            "args": [
+              "REF", 
+              3
+            ], 
+            "mandatory": "a", 
+            "mandatory2": "b", 
+            "kwargs": [
+              "REF", 
+              2
+            ]
+          }, 
+          "is_highlighted": true, 
+          "is_parent": false, 
+          "func_name": "parrot", 
+          "is_zombie": false, 
+          "parent_frame_id_list": [], 
+          "unique_hash": "parrot_f1", 
+          "ordered_varnames": [
+            "mandatory", 
+            "mandatory2", 
+            "args", 
+            "kwargs", 
+            "__return__"
+          ]
+        }
+      ], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ], 
+        "2": [
+          "DICT", 
+          [
+            "age", 
+            "35"
+          ], 
+          [
+            "name", 
+            "Philip"
+          ]
+        ], 
+        "3": [
+          "TUPLE", 
+          "c", 
+          "d", 
+          "e"
+        ]
+      }, 
+      "line": 2, 
+      "event": "return"
+    }, 
+    {
+      "ordered_globals": [
+        "parrot"
+      ], 
+      "stdout": "", 
+      "func_name": "<module>", 
+      "stack_to_render": [], 
+      "globals": {
+        "parrot": [
+          "REF", 
+          1
+        ]
+      }, 
+      "heap": {
+        "1": [
+          "FUNCTION", 
+          "parrot(mandatory, mandatory2, *args, **kwargs)", 
+          null
+        ]
+      }, 
+      "line": 4, 
+      "event": "return"
+    }
+  ]
+}
diff --git a/v3/tests/backend-tests/varargs.txt b/v3/tests/backend-tests/varargs.txt
new file mode 100644
index 000000000..6e26086ea
--- /dev/null
+++ b/v3/tests/backend-tests/varargs.txt
@@ -0,0 +1,4 @@
+def parrot(mandatory, mandatory2, *args, **kwargs):
+  pass
+
+parrot('a', 'b', 'c', 'd', 'e', name='Philip', age='35')
diff --git a/v3/tests/diff_py23_golden_files.py b/v3/tests/diff_py23_golden_files.py
new file mode 100644
index 000000000..904cb6d04
--- /dev/null
+++ b/v3/tests/diff_py23_golden_files.py
@@ -0,0 +1,7 @@
+import os, itertools, subprocess
+
+for (dn, sd, files) in itertools.chain(os.walk('backend-tests/'), os.walk('../example-code/')):
+  for f in files:
+    bn, ext = os.path.splitext(f)
+    if ext == '.golden':
+      subprocess.call(['diff', '-u', os.path.join(dn, bn + ext), os.path.join(dn, bn + '.golden_py3')])
diff --git a/v3/tests/frontend-tests/basic-data-structures.py b/v3/tests/frontend-tests/basic-data-structures.py
new file mode 100644
index 000000000..0204e2c8d
--- /dev/null
+++ b/v3/tests/frontend-tests/basic-data-structures.py
@@ -0,0 +1,24 @@
+# numbers!
+age = 26
+pi = 3.14159
+
+# strings!
+s = 'Rutherford Birchard Hayes'
+tokens = s.split()
+
+# list (mutable sequence)
+beatles = ['John', 'Paul', 'George']
+
+# tuple (immutable sequence)
+ages = (18, 21, 28, 21, 22)
+
+# set (no order, no duplicates)
+uniqueAges = set() # empty set
+uniqueAges = set(ages)
+uniqueAges.remove(21)
+
+# dict - mapping unique keys to values
+netWorth = {}
+netWorth['Donald Trump'] = 3000000000
+netWorth['Bill Gates'] = 58000000000
+netWorth['Joe Postdoc'] = 20000
diff --git a/v3/tests/frontend-tests/binary-tree.py b/v3/tests/frontend-tests/binary-tree.py
new file mode 100644
index 000000000..0ff9409e7
--- /dev/null
+++ b/v3/tests/frontend-tests/binary-tree.py
@@ -0,0 +1 @@
+t = [[['a', 'b'], ['c', 'd']], [[1,2], [3,4]]]
diff --git a/v3/tests/frontend-tests/circular.py b/v3/tests/frontend-tests/circular.py
new file mode 100644
index 000000000..d6d690f6c
--- /dev/null
+++ b/v3/tests/frontend-tests/circular.py
@@ -0,0 +1,9 @@
+x = [1,2]
+y = [1,2]
+z = [1,2]
+w = [1,2]
+
+x[1] = y
+y[1] = z
+z[1] = w
+w[1] = x
diff --git a/v3/tests/frontend-tests/criss-cross.py b/v3/tests/frontend-tests/criss-cross.py
new file mode 100644
index 000000000..5018ecdd4
--- /dev/null
+++ b/v3/tests/frontend-tests/criss-cross.py
@@ -0,0 +1,3 @@
+x = [1,2]
+y = [3,x]
+x[1] = y
diff --git a/v3/tests/frontend-tests/double-nudge.py b/v3/tests/frontend-tests/double-nudge.py
new file mode 100644
index 000000000..b6e55f773
--- /dev/null
+++ b/v3/tests/frontend-tests/double-nudge.py
@@ -0,0 +1,6 @@
+x = [1, [2,  None]]
+y = [1, 2]
+z = [1, 2]
+
+x[1][0] = y # should nudge y to over the right
+z[1] = x    # should nudge BOTH x and y over to the right
diff --git a/v3/tests/frontend-tests/failed-tests/README b/v3/tests/frontend-tests/failed-tests/README
new file mode 100644
index 000000000..beb455229
--- /dev/null
+++ b/v3/tests/frontend-tests/failed-tests/README
@@ -0,0 +1,2 @@
+this directory is where the .png files of failed frontend tests get
+stored by ../opt_frontend_golden_test.py
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.10.png
new file mode 100644
index 000000000..ce7b15aa4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.11.png
new file mode 100644
index 000000000..cfeccf35b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.12.png
new file mode 100644
index 000000000..658fb0759
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.13.png
new file mode 100644
index 000000000..84d344063
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.14.png
new file mode 100644
index 000000000..dd312d000
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.15.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.15.png
new file mode 100644
index 000000000..1084042bf
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.16.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.16.png
new file mode 100644
index 000000000..966c5107d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.17.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.17.png
new file mode 100644
index 000000000..0d3fa49ea
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.18.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.18.png
new file mode 100644
index 000000000..0d3fa49ea
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.19.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.19.png
new file mode 100644
index 000000000..0615ab4a3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.2.png
new file mode 100644
index 000000000..dc74115b1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.20.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.20.png
new file mode 100644
index 000000000..620bc3fb7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.21.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.21.png
new file mode 100644
index 000000000..620bc3fb7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.22.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.22.png
new file mode 100644
index 000000000..9213cb664
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.23.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.23.png
new file mode 100644
index 000000000..0e13a6af9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.24.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.24.png
new file mode 100644
index 000000000..fc3d4d963
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.25.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.25.png
new file mode 100644
index 000000000..d096295ae
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.26.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.26.png
new file mode 100644
index 000000000..d096295ae
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.27.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.27.png
new file mode 100644
index 000000000..71a4d81b1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.28.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.28.png
new file mode 100644
index 000000000..b45be68d3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.29.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.29.png
new file mode 100644
index 000000000..b45be68d3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.29.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.3.png
new file mode 100644
index 000000000..a2b252cb9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.30.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.30.png
new file mode 100644
index 000000000..363a06672
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.30.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.31.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.31.png
new file mode 100644
index 000000000..7f79a3391
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.31.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.32.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.32.png
new file mode 100644
index 000000000..685a29876
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.32.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.4.png
new file mode 100644
index 000000000..8138e2e54
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.5.png
new file mode 100644
index 000000000..156d5f9d4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.6.png
new file mode 100644
index 000000000..252bbeedb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.7.png
new file mode 100644
index 000000000..3fafddfd8
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.8.png
new file mode 100644
index 000000000..c50cc7539
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.9.png
new file mode 100644
index 000000000..5efd3b273
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.2.png
new file mode 100644
index 000000000..074316b20
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.3.png
new file mode 100644
index 000000000..00d454fd1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.4.png
new file mode 100644
index 000000000..eb2615528
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.5.png
new file mode 100644
index 000000000..b839e00d2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/aliasing8.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.10.png
new file mode 100644
index 000000000..0860e0e54
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.11.png
new file mode 100644
index 000000000..4432f75d1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.12.png
new file mode 100644
index 000000000..a16c2c272
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.13.png
new file mode 100644
index 000000000..436e93756
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.14.png
new file mode 100644
index 000000000..b73245799
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.2.png
new file mode 100644
index 000000000..953aa911b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.3.png
new file mode 100644
index 000000000..a4b690746
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.4.png
new file mode 100644
index 000000000..baf937bbd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.5.png
new file mode 100644
index 000000000..328b2b666
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.6.png
new file mode 100644
index 000000000..a0d5f0a5b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.7.png
new file mode 100644
index 000000000..6f1b9058a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.8.png
new file mode 100644
index 000000000..d32ba7cb5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.9.png
new file mode 100644
index 000000000..901ac8fa4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/basic-data-structures.py.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/binary-tree.py.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/binary-tree.py.step.2.png
new file mode 100644
index 000000000..a9dfdbf17
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/binary-tree.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.2.png
new file mode 100644
index 000000000..f44a64597
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.3.png
new file mode 100644
index 000000000..1c050074d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.4.png
new file mode 100644
index 000000000..a735cc7bf
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.5.png
new file mode 100644
index 000000000..003d68ed0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.6.png
new file mode 100644
index 000000000..9f7abd2ff
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.7.png
new file mode 100644
index 000000000..aef2497d9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.8.png
new file mode 100644
index 000000000..8641ccaca
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.9.png
new file mode 100644
index 000000000..56cca856b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/circular.py.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.10.png
new file mode 100644
index 000000000..20c6647c7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.11.png
new file mode 100644
index 000000000..205f12a26
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.12.png
new file mode 100644
index 000000000..ab32457b1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.13.png
new file mode 100644
index 000000000..3f9838268
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.14.png
new file mode 100644
index 000000000..3f9838268
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.15.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.15.png
new file mode 100644
index 000000000..1b730e3a5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.16.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.16.png
new file mode 100644
index 000000000..0f8ef4528
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.2.png
new file mode 100644
index 000000000..122cfe307
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.3.png
new file mode 100644
index 000000000..cd0f28720
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.4.png
new file mode 100644
index 000000000..acfcb4aaa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.5.png
new file mode 100644
index 000000000..acfcb4aaa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.6.png
new file mode 100644
index 000000000..5265b6757
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.7.png
new file mode 100644
index 000000000..14310f98f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.8.png
new file mode 100644
index 000000000..14310f98f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.9.png
new file mode 100644
index 000000000..8087a38ce
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/closure3.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.2.png
new file mode 100644
index 000000000..d602755c6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.3.png
new file mode 100644
index 000000000..ac6f38a8b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.4.png
new file mode 100644
index 000000000..6c8991230
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/criss-cross.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.2.png
new file mode 100644
index 000000000..12825e858
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.3.png
new file mode 100644
index 000000000..67cb9e591
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.4.png
new file mode 100644
index 000000000..2033d90bc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.5.png
new file mode 100644
index 000000000..ef333bd95
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.6.png
new file mode 100644
index 000000000..de579a8d5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/double-nudge.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.10.png
new file mode 100644
index 000000000..d8fac5146
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.11.png
new file mode 100644
index 000000000..d8fac5146
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.12.png
new file mode 100644
index 000000000..bf2c60d9a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.13.png
new file mode 100644
index 000000000..bf2c60d9a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.14.png
new file mode 100644
index 000000000..bf2c60d9a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.15.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.15.png
new file mode 100644
index 000000000..e2d63ba47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.16.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.16.png
new file mode 100644
index 000000000..e2d63ba47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.17.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.17.png
new file mode 100644
index 000000000..e2d63ba47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.18.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.18.png
new file mode 100644
index 000000000..e9ccceb34
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.19.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.19.png
new file mode 100644
index 000000000..e9ccceb34
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.2.png
new file mode 100644
index 000000000..162420b98
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.20.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.20.png
new file mode 100644
index 000000000..e9ccceb34
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.21.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.21.png
new file mode 100644
index 000000000..bd2837bdd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.22.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.22.png
new file mode 100644
index 000000000..54db2756a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.23.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.23.png
new file mode 100644
index 000000000..63dc72f60
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.24.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.24.png
new file mode 100644
index 000000000..732070acc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.25.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.25.png
new file mode 100644
index 000000000..82bb19e51
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.26.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.26.png
new file mode 100644
index 000000000..099aecc9c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.27.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.27.png
new file mode 100644
index 000000000..05ccfce99
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.3.png
new file mode 100644
index 000000000..b44e8266f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.4.png
new file mode 100644
index 000000000..b44e8266f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.5.png
new file mode 100644
index 000000000..b44e8266f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.6.png
new file mode 100644
index 000000000..ee40735b9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.7.png
new file mode 100644
index 000000000..ee40735b9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.8.png
new file mode 100644
index 000000000..ee40735b9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.9.png
new file mode 100644
index 000000000..d8fac5146
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/fact.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.10.png
new file mode 100644
index 000000000..740491b2a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.11.png
new file mode 100644
index 000000000..740491b2a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.12.png
new file mode 100644
index 000000000..740491b2a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.13.png
new file mode 100644
index 000000000..82ea7a79e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.14.png
new file mode 100644
index 000000000..82ea7a79e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.15.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.15.png
new file mode 100644
index 000000000..7c10fcc9f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.16.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.16.png
new file mode 100644
index 000000000..a2ddf242d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.17.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.17.png
new file mode 100644
index 000000000..a2ddf242d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.18.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.18.png
new file mode 100644
index 000000000..7f82c53fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.19.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.19.png
new file mode 100644
index 000000000..7f82c53fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.2.png
new file mode 100644
index 000000000..2f1269ce6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.20.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.20.png
new file mode 100644
index 000000000..7f82c53fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.3.png
new file mode 100644
index 000000000..b81c64cd6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.4.png
new file mode 100644
index 000000000..072757d06
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.5.png
new file mode 100644
index 000000000..072757d06
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.6.png
new file mode 100644
index 000000000..d161f4329
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.7.png
new file mode 100644
index 000000000..05441f73b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.8.png
new file mode 100644
index 000000000..05441f73b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.9.png
new file mode 100644
index 000000000..05441f73b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/filter.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.10.png
new file mode 100644
index 000000000..ac1e25774
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.11.png
new file mode 100644
index 000000000..b5d615143
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.12.png
new file mode 100644
index 000000000..359cef590
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.13.png
new file mode 100644
index 000000000..1b5503dfa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.14.png
new file mode 100644
index 000000000..d01c82f3d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.15.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.15.png
new file mode 100644
index 000000000..d01c82f3d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.16.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.16.png
new file mode 100644
index 000000000..90966c779
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.17.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.17.png
new file mode 100644
index 000000000..7f484f896
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.18.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.18.png
new file mode 100644
index 000000000..bdfe631f2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.19.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.19.png
new file mode 100644
index 000000000..39a413cf6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.2.png
new file mode 100644
index 000000000..714e375da
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.20.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.20.png
new file mode 100644
index 000000000..e509ca0d6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.21.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.21.png
new file mode 100644
index 000000000..f2df9ceb6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.22.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.22.png
new file mode 100644
index 000000000..6b89706a4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.23.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.23.png
new file mode 100644
index 000000000..8ff65562f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.24.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.24.png
new file mode 100644
index 000000000..d28aa13f4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.25.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.25.png
new file mode 100644
index 000000000..5a0bb14bc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.26.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.26.png
new file mode 100644
index 000000000..c8d9c9981
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.27.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.27.png
new file mode 100644
index 000000000..7271d791f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.28.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.28.png
new file mode 100644
index 000000000..2a1f55e4e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.29.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.29.png
new file mode 100644
index 000000000..2a1f55e4e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.29.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.3.png
new file mode 100644
index 000000000..2f3214cad
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.30.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.30.png
new file mode 100644
index 000000000..2e7090cd8
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.30.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.4.png
new file mode 100644
index 000000000..0b46bcea5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.5.png
new file mode 100644
index 000000000..c29223c7b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.6.png
new file mode 100644
index 000000000..a823339ab
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.7.png
new file mode 100644
index 000000000..f8d85ac28
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.8.png
new file mode 100644
index 000000000..c208d0739
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.9.png
new file mode 100644
index 000000000..0daadd628
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/ll1.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.10.png
new file mode 100644
index 000000000..a746c6b44
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.11.png
new file mode 100644
index 000000000..8937eb0df
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.2.png
new file mode 100644
index 000000000..50dcfef1c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.3.png
new file mode 100644
index 000000000..2a9878903
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.4.png
new file mode 100644
index 000000000..eef30004c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.5.png
new file mode 100644
index 000000000..eef30004c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.6.png
new file mode 100644
index 000000000..2aef6fc61
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.7.png
new file mode 100644
index 000000000..e77095a12
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.8.png
new file mode 100644
index 000000000..e77095a12
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.9.png
new file mode 100644
index 000000000..d401420d0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/oop_inherit.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.10.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.10.png
new file mode 100644
index 000000000..c23f31ce1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.11.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.11.png
new file mode 100644
index 000000000..c23f31ce1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.12.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.12.png
new file mode 100644
index 000000000..c23f31ce1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.13.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.13.png
new file mode 100644
index 000000000..cc5208330
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.14.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.14.png
new file mode 100644
index 000000000..cc5208330
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.15.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.15.png
new file mode 100644
index 000000000..cc5208330
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.16.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.16.png
new file mode 100644
index 000000000..bef2c7a90
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.17.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.17.png
new file mode 100644
index 000000000..bef2c7a90
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.18.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.18.png
new file mode 100644
index 000000000..bef2c7a90
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.19.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.19.png
new file mode 100644
index 000000000..93c275586
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.2.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.2.png
new file mode 100644
index 000000000..8fb0dbf9f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.20.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.20.png
new file mode 100644
index 000000000..93c275586
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.21.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.21.png
new file mode 100644
index 000000000..93c275586
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.22.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.22.png
new file mode 100644
index 000000000..5d8a39e47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.23.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.23.png
new file mode 100644
index 000000000..b7217edc4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.24.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.24.png
new file mode 100644
index 000000000..036ed54fd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.25.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.25.png
new file mode 100644
index 000000000..540f00970
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.26.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.26.png
new file mode 100644
index 000000000..bd33273be
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.27.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.27.png
new file mode 100644
index 000000000..fe3f897e6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.28.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.28.png
new file mode 100644
index 000000000..7a21edde4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.3.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.3.png
new file mode 100644
index 000000000..6f9a2bef6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.4.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.4.png
new file mode 100644
index 000000000..3e9f84cc9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.5.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.5.png
new file mode 100644
index 000000000..3e9f84cc9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.6.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.6.png
new file mode 100644
index 000000000..3e9f84cc9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.7.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.7.png
new file mode 100644
index 000000000..d87cc078a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.8.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.8.png
new file mode 100644
index 000000000..d87cc078a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.9.png b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.9.png
new file mode 100644
index 000000000..d87cc078a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/composingprograms/sum-list.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.10.png
new file mode 100644
index 000000000..e91c13bca
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.11.png
new file mode 100644
index 000000000..df5b7d562
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.12.png
new file mode 100644
index 000000000..7afa6bd64
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.13.png
new file mode 100644
index 000000000..d24ab8b77
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.14.png
new file mode 100644
index 000000000..1127bdcb4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.15.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.15.png
new file mode 100644
index 000000000..0206d0f9b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.16.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.16.png
new file mode 100644
index 000000000..b3b57891b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.17.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.17.png
new file mode 100644
index 000000000..c2bdd86ad
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.18.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.18.png
new file mode 100644
index 000000000..c2bdd86ad
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.19.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.19.png
new file mode 100644
index 000000000..0c2bacfa7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.2.png
new file mode 100644
index 000000000..9ef4923d4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.20.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.20.png
new file mode 100644
index 000000000..df13a6d7d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.21.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.21.png
new file mode 100644
index 000000000..df13a6d7d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.22.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.22.png
new file mode 100644
index 000000000..100df1ad2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.23.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.23.png
new file mode 100644
index 000000000..eb4bd93ff
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.24.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.24.png
new file mode 100644
index 000000000..b2dd58fda
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.25.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.25.png
new file mode 100644
index 000000000..21e5c3da9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.26.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.26.png
new file mode 100644
index 000000000..21e5c3da9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.27.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.27.png
new file mode 100644
index 000000000..0d855afe7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.28.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.28.png
new file mode 100644
index 000000000..85c05fafc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.29.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.29.png
new file mode 100644
index 000000000..85c05fafc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.29.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.3.png
new file mode 100644
index 000000000..f91442f17
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.30.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.30.png
new file mode 100644
index 000000000..12dde6277
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.30.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.31.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.31.png
new file mode 100644
index 000000000..a86720560
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.31.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.32.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.32.png
new file mode 100644
index 000000000..a6a62419d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.32.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.4.png
new file mode 100644
index 000000000..f9ef164e7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.5.png
new file mode 100644
index 000000000..359cf9987
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.6.png
new file mode 100644
index 000000000..a07dc2606
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.7.png
new file mode 100644
index 000000000..6a6353f23
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.8.png
new file mode 100644
index 000000000..58cd97468
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.9.png
new file mode 100644
index 000000000..e3c3e761c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.2.png
new file mode 100644
index 000000000..197c5c91e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.3.png
new file mode 100644
index 000000000..9d64b0c87
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.4.png
new file mode 100644
index 000000000..d630f4efe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.5.png
new file mode 100644
index 000000000..e6a83bbad
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/aliasing8.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.10.png
new file mode 100644
index 000000000..068013214
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.11.png
new file mode 100644
index 000000000..11d4ff12f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.12.png
new file mode 100644
index 000000000..e0d4ae52f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.13.png
new file mode 100644
index 000000000..71c061677
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.14.png
new file mode 100644
index 000000000..57cfed5d2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.2.png
new file mode 100644
index 000000000..d16603658
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.3.png
new file mode 100644
index 000000000..331b748d5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.4.png
new file mode 100644
index 000000000..f0c8d696f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.5.png
new file mode 100644
index 000000000..b299bec38
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.6.png
new file mode 100644
index 000000000..f457c98a3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.7.png
new file mode 100644
index 000000000..67ed044ac
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.8.png
new file mode 100644
index 000000000..e2e33ae7f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.9.png
new file mode 100644
index 000000000..31d442809
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/basic-data-structures.py.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/binary-tree.py.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/binary-tree.py.step.2.png
new file mode 100644
index 000000000..6f40a5937
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/binary-tree.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.2.png
new file mode 100644
index 000000000..7de6f61cb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.3.png
new file mode 100644
index 000000000..84b02c7b6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.4.png
new file mode 100644
index 000000000..a960f575d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.5.png
new file mode 100644
index 000000000..23deff82f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.6.png
new file mode 100644
index 000000000..bae16101f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.7.png
new file mode 100644
index 000000000..e20dcf08d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.8.png
new file mode 100644
index 000000000..6f6bc5118
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.9.png
new file mode 100644
index 000000000..eed5f0fae
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/circular.py.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.10.png
new file mode 100644
index 000000000..c770165bd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.11.png
new file mode 100644
index 000000000..53abe7fd7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.12.png
new file mode 100644
index 000000000..af4197b04
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.13.png
new file mode 100644
index 000000000..e7de67d6e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.14.png
new file mode 100644
index 000000000..e7de67d6e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.15.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.15.png
new file mode 100644
index 000000000..663865f29
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.16.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.16.png
new file mode 100644
index 000000000..af4197b04
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.2.png
new file mode 100644
index 000000000..60fe1724a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.3.png
new file mode 100644
index 000000000..cc1066a48
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.4.png
new file mode 100644
index 000000000..73c91bb0c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.5.png
new file mode 100644
index 000000000..73c91bb0c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.6.png
new file mode 100644
index 000000000..5f601a472
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.7.png
new file mode 100644
index 000000000..78204cbf5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.8.png
new file mode 100644
index 000000000..78204cbf5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.9.png
new file mode 100644
index 000000000..7b8f24035
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/closure3.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.2.png
new file mode 100644
index 000000000..54390de80
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.3.png
new file mode 100644
index 000000000..9d4abe631
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.4.png
new file mode 100644
index 000000000..c363b1d47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/criss-cross.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.2.png
new file mode 100644
index 000000000..3889706be
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.3.png
new file mode 100644
index 000000000..cf1ddc3fa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.4.png
new file mode 100644
index 000000000..3e4dead42
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.5.png
new file mode 100644
index 000000000..1ba3a0535
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.6.png
new file mode 100644
index 000000000..ea42e5e50
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/double-nudge.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.10.png
new file mode 100644
index 000000000..9d65f4e95
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.11.png
new file mode 100644
index 000000000..9d65f4e95
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.12.png
new file mode 100644
index 000000000..585537cc3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.13.png
new file mode 100644
index 000000000..585537cc3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.14.png
new file mode 100644
index 000000000..585537cc3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.15.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.15.png
new file mode 100644
index 000000000..f2d8ad63c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.16.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.16.png
new file mode 100644
index 000000000..f2d8ad63c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.17.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.17.png
new file mode 100644
index 000000000..f2d8ad63c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.18.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.18.png
new file mode 100644
index 000000000..1d1216501
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.19.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.19.png
new file mode 100644
index 000000000..1d1216501
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.2.png
new file mode 100644
index 000000000..04cd6a92d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.20.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.20.png
new file mode 100644
index 000000000..1d1216501
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.21.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.21.png
new file mode 100644
index 000000000..104bd33d2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.22.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.22.png
new file mode 100644
index 000000000..3074fa390
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.23.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.23.png
new file mode 100644
index 000000000..047505515
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.24.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.24.png
new file mode 100644
index 000000000..bcc39f0ed
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.25.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.25.png
new file mode 100644
index 000000000..d0c9c9280
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.26.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.26.png
new file mode 100644
index 000000000..b643b9e7a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.27.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.27.png
new file mode 100644
index 000000000..04cd6a92d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.3.png
new file mode 100644
index 000000000..7aa97cea0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.4.png
new file mode 100644
index 000000000..7aa97cea0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.5.png
new file mode 100644
index 000000000..7aa97cea0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.6.png
new file mode 100644
index 000000000..32b2270f0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.7.png
new file mode 100644
index 000000000..32b2270f0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.8.png
new file mode 100644
index 000000000..32b2270f0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.9.png
new file mode 100644
index 000000000..9d65f4e95
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/fact.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.10.png
new file mode 100644
index 000000000..c227aa3ba
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.11.png
new file mode 100644
index 000000000..c227aa3ba
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.12.png
new file mode 100644
index 000000000..c227aa3ba
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.13.png
new file mode 100644
index 000000000..9ed0a9342
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.14.png
new file mode 100644
index 000000000..9ed0a9342
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.15.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.15.png
new file mode 100644
index 000000000..972df506e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.16.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.16.png
new file mode 100644
index 000000000..dc5ea66a6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.17.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.17.png
new file mode 100644
index 000000000..dc5ea66a6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.18.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.18.png
new file mode 100644
index 000000000..49a7b9147
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.19.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.19.png
new file mode 100644
index 000000000..49a7b9147
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.2.png
new file mode 100644
index 000000000..b5fa14601
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.20.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.20.png
new file mode 100644
index 000000000..49a7b9147
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.3.png
new file mode 100644
index 000000000..c347ed785
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.4.png
new file mode 100644
index 000000000..74a03fed3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.5.png
new file mode 100644
index 000000000..74a03fed3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.6.png
new file mode 100644
index 000000000..6acfa7b7c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.7.png
new file mode 100644
index 000000000..8722b1cfb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.8.png
new file mode 100644
index 000000000..8722b1cfb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.9.png
new file mode 100644
index 000000000..8722b1cfb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/filter.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.10.png
new file mode 100644
index 000000000..d276f782e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.11.png
new file mode 100644
index 000000000..afdce9c4a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.12.png
new file mode 100644
index 000000000..d9dd1289d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.13.png
new file mode 100644
index 000000000..bc4a1973f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.14.png
new file mode 100644
index 000000000..24961e974
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.15.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.15.png
new file mode 100644
index 000000000..24961e974
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.16.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.16.png
new file mode 100644
index 000000000..dee266cf2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.17.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.17.png
new file mode 100644
index 000000000..5498be203
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.18.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.18.png
new file mode 100644
index 000000000..4c3c74645
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.19.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.19.png
new file mode 100644
index 000000000..5a8b8e141
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.2.png
new file mode 100644
index 000000000..000f9b672
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.20.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.20.png
new file mode 100644
index 000000000..007f5d619
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.21.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.21.png
new file mode 100644
index 000000000..e3cf93bda
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.22.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.22.png
new file mode 100644
index 000000000..061889118
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.23.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.23.png
new file mode 100644
index 000000000..edeff949d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.24.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.24.png
new file mode 100644
index 000000000..f02fc8b22
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.25.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.25.png
new file mode 100644
index 000000000..2bec314fc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.26.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.26.png
new file mode 100644
index 000000000..984b23370
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.27.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.27.png
new file mode 100644
index 000000000..b09fa0137
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.28.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.28.png
new file mode 100644
index 000000000..67438f1b5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.29.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.29.png
new file mode 100644
index 000000000..67438f1b5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.29.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.3.png
new file mode 100644
index 000000000..d00b11cfd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.30.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.30.png
new file mode 100644
index 000000000..8d0745dfb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.30.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.4.png
new file mode 100644
index 000000000..d4d955a19
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.5.png
new file mode 100644
index 000000000..28f53b236
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.6.png
new file mode 100644
index 000000000..aaeed8e71
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.7.png
new file mode 100644
index 000000000..19ed582c6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.8.png
new file mode 100644
index 000000000..b76364188
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.9.png
new file mode 100644
index 000000000..c37d31a65
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/ll1.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.10.png
new file mode 100644
index 000000000..ded0cb85e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.11.png
new file mode 100644
index 000000000..951693177
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.2.png
new file mode 100644
index 000000000..2f380b9ae
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.3.png
new file mode 100644
index 000000000..f7cdbd8e6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.4.png
new file mode 100644
index 000000000..1f7c3f05b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.5.png
new file mode 100644
index 000000000..1f7c3f05b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.6.png
new file mode 100644
index 000000000..4da8e834b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.7.png
new file mode 100644
index 000000000..c831725eb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.8.png
new file mode 100644
index 000000000..c831725eb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.9.png
new file mode 100644
index 000000000..4c1cc0c97
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/oop_inherit.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.10.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.10.png
new file mode 100644
index 000000000..2c3309a17
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.11.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.11.png
new file mode 100644
index 000000000..2c3309a17
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.12.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.12.png
new file mode 100644
index 000000000..2c3309a17
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.13.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.13.png
new file mode 100644
index 000000000..0b6c66e07
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.14.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.14.png
new file mode 100644
index 000000000..0b6c66e07
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.15.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.15.png
new file mode 100644
index 000000000..0b6c66e07
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.16.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.16.png
new file mode 100644
index 000000000..8aa928348
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.17.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.17.png
new file mode 100644
index 000000000..8aa928348
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.18.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.18.png
new file mode 100644
index 000000000..8aa928348
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.19.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.19.png
new file mode 100644
index 000000000..43b3374f0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.2.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.2.png
new file mode 100644
index 000000000..a7ad3f8f1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.20.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.20.png
new file mode 100644
index 000000000..43b3374f0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.21.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.21.png
new file mode 100644
index 000000000..43b3374f0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.22.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.22.png
new file mode 100644
index 000000000..7d4dd6cad
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.23.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.23.png
new file mode 100644
index 000000000..59bcb9211
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.24.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.24.png
new file mode 100644
index 000000000..425ccaec6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.25.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.25.png
new file mode 100644
index 000000000..62aa672b2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.26.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.26.png
new file mode 100644
index 000000000..e0e06844d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.27.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.27.png
new file mode 100644
index 000000000..a2a425a08
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.28.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.28.png
new file mode 100644
index 000000000..64453be8b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.3.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.3.png
new file mode 100644
index 000000000..ab31db6ec
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.4.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.4.png
new file mode 100644
index 000000000..71256b15a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.5.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.5.png
new file mode 100644
index 000000000..71256b15a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.6.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.6.png
new file mode 100644
index 000000000..71256b15a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.7.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.7.png
new file mode 100644
index 000000000..237b24826
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.8.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.8.png
new file mode 100644
index 000000000..237b24826
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.9.png b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.9.png
new file mode 100644
index 000000000..237b24826
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/csc108h/sum-list.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.10.png
new file mode 100644
index 000000000..ce7b15aa4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.11.png
new file mode 100644
index 000000000..cfeccf35b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.12.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.12.png
new file mode 100644
index 000000000..658fb0759
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.13.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.13.png
new file mode 100644
index 000000000..84d344063
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.14.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.14.png
new file mode 100644
index 000000000..dd312d000
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.15.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.15.png
new file mode 100644
index 000000000..1084042bf
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.16.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.16.png
new file mode 100644
index 000000000..966c5107d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.17.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.17.png
new file mode 100644
index 000000000..0d3fa49ea
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.18.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.18.png
new file mode 100644
index 000000000..0d3fa49ea
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.19.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.19.png
new file mode 100644
index 000000000..0615ab4a3
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.2.png
new file mode 100644
index 000000000..dc74115b1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.20.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.20.png
new file mode 100644
index 000000000..620bc3fb7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.21.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.21.png
new file mode 100644
index 000000000..620bc3fb7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.22.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.22.png
new file mode 100644
index 000000000..9213cb664
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.23.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.23.png
new file mode 100644
index 000000000..e0bac689d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.24.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.24.png
new file mode 100644
index 000000000..501e445fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.25.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.25.png
new file mode 100644
index 000000000..39e44c67c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.26.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.26.png
new file mode 100644
index 000000000..39e44c67c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.27.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.27.png
new file mode 100644
index 000000000..96e6a8c1f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.28.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.28.png
new file mode 100644
index 000000000..35341b08b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.29.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.29.png
new file mode 100644
index 000000000..35341b08b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.29.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.3.png
new file mode 100644
index 000000000..a2b252cb9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.30.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.30.png
new file mode 100644
index 000000000..a2f488ad7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.30.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.31.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.31.png
new file mode 100644
index 000000000..7b5308f71
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.31.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.32.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.32.png
new file mode 100644
index 000000000..450d3b05b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.32.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.4.png
new file mode 100644
index 000000000..8138e2e54
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.5.png
new file mode 100644
index 000000000..156d5f9d4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.6.png
new file mode 100644
index 000000000..252bbeedb
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.7.png
new file mode 100644
index 000000000..3fafddfd8
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.8.png
new file mode 100644
index 000000000..c50cc7539
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.9.png
new file mode 100644
index 000000000..5efd3b273
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.2.png
new file mode 100644
index 000000000..074316b20
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.3.png
new file mode 100644
index 000000000..00d454fd1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.4.png
new file mode 100644
index 000000000..eb2615528
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.5.png
new file mode 100644
index 000000000..b839e00d2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/aliasing8.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.10.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.10.png
new file mode 100644
index 000000000..0860e0e54
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.11.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.11.png
new file mode 100644
index 000000000..4432f75d1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.12.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.12.png
new file mode 100644
index 000000000..a16c2c272
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.13.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.13.png
new file mode 100644
index 000000000..436e93756
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.14.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.14.png
new file mode 100644
index 000000000..b73245799
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.2.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.2.png
new file mode 100644
index 000000000..953aa911b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.3.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.3.png
new file mode 100644
index 000000000..a4b690746
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.4.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.4.png
new file mode 100644
index 000000000..baf937bbd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.5.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.5.png
new file mode 100644
index 000000000..328b2b666
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.6.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.6.png
new file mode 100644
index 000000000..a0d5f0a5b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.7.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.7.png
new file mode 100644
index 000000000..6f1b9058a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.8.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.8.png
new file mode 100644
index 000000000..d32ba7cb5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.9.png b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.9.png
new file mode 100644
index 000000000..901ac8fa4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/basic-data-structures.py.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/binary-tree.py.step.2.png b/v3/tests/frontend-tests/golden-files/regular/binary-tree.py.step.2.png
new file mode 100644
index 000000000..a9dfdbf17
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/binary-tree.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.2.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.2.png
new file mode 100644
index 000000000..f44a64597
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.3.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.3.png
new file mode 100644
index 000000000..1c050074d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.4.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.4.png
new file mode 100644
index 000000000..a735cc7bf
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.5.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.5.png
new file mode 100644
index 000000000..003d68ed0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.6.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.6.png
new file mode 100644
index 000000000..9f7abd2ff
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.7.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.7.png
new file mode 100644
index 000000000..aef2497d9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.8.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.8.png
new file mode 100644
index 000000000..8641ccaca
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/circular.py.step.9.png b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.9.png
new file mode 100644
index 000000000..56cca856b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/circular.py.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.10.png
new file mode 100644
index 000000000..20c6647c7
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.11.png
new file mode 100644
index 000000000..205f12a26
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.12.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.12.png
new file mode 100644
index 000000000..ab32457b1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.13.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.13.png
new file mode 100644
index 000000000..3f9838268
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.14.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.14.png
new file mode 100644
index 000000000..3f9838268
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.15.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.15.png
new file mode 100644
index 000000000..1b730e3a5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.16.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.16.png
new file mode 100644
index 000000000..ab32457b1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.2.png
new file mode 100644
index 000000000..122cfe307
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.3.png
new file mode 100644
index 000000000..cd0f28720
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.4.png
new file mode 100644
index 000000000..acfcb4aaa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.5.png
new file mode 100644
index 000000000..acfcb4aaa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.6.png
new file mode 100644
index 000000000..5265b6757
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.7.png
new file mode 100644
index 000000000..14310f98f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.8.png
new file mode 100644
index 000000000..14310f98f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.9.png
new file mode 100644
index 000000000..8087a38ce
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/closure3.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.2.png b/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.2.png
new file mode 100644
index 000000000..d602755c6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.3.png b/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.3.png
new file mode 100644
index 000000000..ac6f38a8b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.4.png b/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.4.png
new file mode 100644
index 000000000..6c8991230
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/criss-cross.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.2.png b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.2.png
new file mode 100644
index 000000000..12825e858
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.3.png b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.3.png
new file mode 100644
index 000000000..67cb9e591
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.4.png b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.4.png
new file mode 100644
index 000000000..2033d90bc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.5.png b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.5.png
new file mode 100644
index 000000000..ef333bd95
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.6.png b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.6.png
new file mode 100644
index 000000000..de579a8d5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/double-nudge.py.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.10.png
new file mode 100644
index 000000000..d8fac5146
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.11.png
new file mode 100644
index 000000000..d8fac5146
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.12.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.12.png
new file mode 100644
index 000000000..bf2c60d9a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.13.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.13.png
new file mode 100644
index 000000000..bf2c60d9a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.14.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.14.png
new file mode 100644
index 000000000..bf2c60d9a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.15.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.15.png
new file mode 100644
index 000000000..e2d63ba47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.16.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.16.png
new file mode 100644
index 000000000..e2d63ba47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.17.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.17.png
new file mode 100644
index 000000000..e2d63ba47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.18.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.18.png
new file mode 100644
index 000000000..e9ccceb34
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.19.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.19.png
new file mode 100644
index 000000000..e9ccceb34
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.2.png
new file mode 100644
index 000000000..162420b98
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.20.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.20.png
new file mode 100644
index 000000000..e9ccceb34
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.21.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.21.png
new file mode 100644
index 000000000..bd2837bdd
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.22.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.22.png
new file mode 100644
index 000000000..acc8c3710
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.23.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.23.png
new file mode 100644
index 000000000..624400f13
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.24.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.24.png
new file mode 100644
index 000000000..73468b4d9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.25.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.25.png
new file mode 100644
index 000000000..447fca63d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.26.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.26.png
new file mode 100644
index 000000000..988f28d45
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.27.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.27.png
new file mode 100644
index 000000000..162420b98
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.3.png
new file mode 100644
index 000000000..b44e8266f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.4.png
new file mode 100644
index 000000000..b44e8266f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.5.png
new file mode 100644
index 000000000..b44e8266f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.6.png
new file mode 100644
index 000000000..ee40735b9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.7.png
new file mode 100644
index 000000000..ee40735b9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.8.png
new file mode 100644
index 000000000..ee40735b9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.9.png
new file mode 100644
index 000000000..d8fac5146
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/fact.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.10.png
new file mode 100644
index 000000000..740491b2a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.11.png
new file mode 100644
index 000000000..740491b2a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.12.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.12.png
new file mode 100644
index 000000000..740491b2a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.13.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.13.png
new file mode 100644
index 000000000..82ea7a79e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.14.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.14.png
new file mode 100644
index 000000000..82ea7a79e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.15.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.15.png
new file mode 100644
index 000000000..7c10fcc9f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.16.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.16.png
new file mode 100644
index 000000000..a2ddf242d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.17.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.17.png
new file mode 100644
index 000000000..a2ddf242d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.18.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.18.png
new file mode 100644
index 000000000..7f82c53fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.19.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.19.png
new file mode 100644
index 000000000..7f82c53fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.2.png
new file mode 100644
index 000000000..2f1269ce6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.20.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.20.png
new file mode 100644
index 000000000..7f82c53fe
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.3.png
new file mode 100644
index 000000000..b81c64cd6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.4.png
new file mode 100644
index 000000000..072757d06
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.5.png
new file mode 100644
index 000000000..072757d06
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.6.png
new file mode 100644
index 000000000..d161f4329
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.7.png
new file mode 100644
index 000000000..05441f73b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.8.png
new file mode 100644
index 000000000..05441f73b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.9.png
new file mode 100644
index 000000000..05441f73b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/filter.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.10.png
new file mode 100644
index 000000000..ac1e25774
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.11.png
new file mode 100644
index 000000000..b5d615143
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.12.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.12.png
new file mode 100644
index 000000000..359cef590
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.13.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.13.png
new file mode 100644
index 000000000..1b5503dfa
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.14.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.14.png
new file mode 100644
index 000000000..d01c82f3d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.15.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.15.png
new file mode 100644
index 000000000..d01c82f3d
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.16.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.16.png
new file mode 100644
index 000000000..90966c779
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.17.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.17.png
new file mode 100644
index 000000000..7f484f896
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.18.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.18.png
new file mode 100644
index 000000000..bdfe631f2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.19.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.19.png
new file mode 100644
index 000000000..39a413cf6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.2.png
new file mode 100644
index 000000000..714e375da
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.20.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.20.png
new file mode 100644
index 000000000..e509ca0d6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.21.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.21.png
new file mode 100644
index 000000000..f2df9ceb6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.22.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.22.png
new file mode 100644
index 000000000..6b89706a4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.23.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.23.png
new file mode 100644
index 000000000..8ff65562f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.24.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.24.png
new file mode 100644
index 000000000..d28aa13f4
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.25.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.25.png
new file mode 100644
index 000000000..5a0bb14bc
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.26.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.26.png
new file mode 100644
index 000000000..c8d9c9981
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.27.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.27.png
new file mode 100644
index 000000000..7271d791f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.28.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.28.png
new file mode 100644
index 000000000..2a1f55e4e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.29.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.29.png
new file mode 100644
index 000000000..2a1f55e4e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.29.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.3.png
new file mode 100644
index 000000000..2f3214cad
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.30.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.30.png
new file mode 100644
index 000000000..2e7090cd8
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.30.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.4.png
new file mode 100644
index 000000000..0b46bcea5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.5.png
new file mode 100644
index 000000000..c29223c7b
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.6.png
new file mode 100644
index 000000000..a823339ab
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.7.png
new file mode 100644
index 000000000..f8d85ac28
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.8.png
new file mode 100644
index 000000000..c208d0739
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.9.png
new file mode 100644
index 000000000..0daadd628
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/ll1.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.10.png
new file mode 100644
index 000000000..d5142b0d2
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.11.png
new file mode 100644
index 000000000..a61b62a1f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.2.png
new file mode 100644
index 000000000..50dcfef1c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.3.png
new file mode 100644
index 000000000..2a9878903
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.4.png
new file mode 100644
index 000000000..eef30004c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.5.png
new file mode 100644
index 000000000..eef30004c
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.6.png
new file mode 100644
index 000000000..2aef6fc61
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.7.png
new file mode 100644
index 000000000..e77095a12
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.8.png
new file mode 100644
index 000000000..e77095a12
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.9.png
new file mode 100644
index 000000000..d401420d0
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/oop_inherit.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.10.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.10.png
new file mode 100644
index 000000000..c23f31ce1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.10.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.11.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.11.png
new file mode 100644
index 000000000..c23f31ce1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.11.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.12.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.12.png
new file mode 100644
index 000000000..c23f31ce1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.12.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.13.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.13.png
new file mode 100644
index 000000000..cc5208330
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.13.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.14.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.14.png
new file mode 100644
index 000000000..cc5208330
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.14.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.15.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.15.png
new file mode 100644
index 000000000..cc5208330
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.15.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.16.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.16.png
new file mode 100644
index 000000000..bef2c7a90
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.16.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.17.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.17.png
new file mode 100644
index 000000000..bef2c7a90
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.17.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.18.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.18.png
new file mode 100644
index 000000000..bef2c7a90
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.18.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.19.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.19.png
new file mode 100644
index 000000000..93c275586
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.19.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.2.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.2.png
new file mode 100644
index 000000000..8fb0dbf9f
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.2.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.20.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.20.png
new file mode 100644
index 000000000..93c275586
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.20.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.21.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.21.png
new file mode 100644
index 000000000..93c275586
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.21.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.22.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.22.png
new file mode 100644
index 000000000..5d8a39e47
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.22.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.23.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.23.png
new file mode 100644
index 000000000..f81ef9574
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.23.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.24.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.24.png
new file mode 100644
index 000000000..1d416359e
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.24.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.25.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.25.png
new file mode 100644
index 000000000..e73dc83ee
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.25.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.26.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.26.png
new file mode 100644
index 000000000..325fe7e16
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.26.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.27.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.27.png
new file mode 100644
index 000000000..94b35e9e5
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.27.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.28.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.28.png
new file mode 100644
index 000000000..d70e3e6a1
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.28.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.3.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.3.png
new file mode 100644
index 000000000..6f9a2bef6
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.3.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.4.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.4.png
new file mode 100644
index 000000000..3e9f84cc9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.4.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.5.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.5.png
new file mode 100644
index 000000000..3e9f84cc9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.5.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.6.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.6.png
new file mode 100644
index 000000000..3e9f84cc9
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.6.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.7.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.7.png
new file mode 100644
index 000000000..d87cc078a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.7.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.8.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.8.png
new file mode 100644
index 000000000..d87cc078a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.8.png differ
diff --git a/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.9.png b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.9.png
new file mode 100644
index 000000000..d87cc078a
Binary files /dev/null and b/v3/tests/frontend-tests/golden-files/regular/sum-list.txt.step.9.png differ
diff --git a/v3/tests/frontend-tests/opt-screenshot-test.js b/v3/tests/frontend-tests/opt-screenshot-test.js
new file mode 100644
index 000000000..67133423b
--- /dev/null
+++ b/v3/tests/frontend-tests/opt-screenshot-test.js
@@ -0,0 +1,77 @@
+// Uses PhantomJS (phantomjs.org) to call Online Python Tutor to
+// visualize and render screenshots of a Python file as .png images
+
+// Created by Philip Guo on 2013-11-23
+
+var DEBUG = true;
+
+var page = require('webpage').create();
+var system = require('system');
+var fs = require('fs');
+
+if (system.args.length < 3) {
+  console.log('\nUsage:');
+  console.log('phantomjs opt-screenshot-test.js <filename> <HTML file> <option string>');
+  console.log('\nVisualizes execution of a Python file at localhost:8080 and renders');
+  console.log('the state diagram at each step i as /tmp/<filename>.step.$i.png');
+  phantom.exit(1);
+}
+
+var server = 'localhost:8080';
+var fn = system.args[1];
+var html = system.args[2]
+var option_str = system.args[3];
+
+var basename = fn.split(/[\\/]/).pop();
+
+var pythonScript = fs.open(fn, 'r').read();
+
+if (DEBUG) {
+  console.log('Visualizing ...\n');
+  console.log(pythonScript);
+  console.log('--- please wait ---');
+}
+
+var scriptEncoded = encodeURIComponent(pythonScript);
+
+// construct a URL with the script and options:
+//var url = 'http://' + server + '/' + html + '#code=' + scriptEncoded + option_str;
+var url = 'http://' + server + '/' + html + '#code=' + scriptEncoded +
+          '&mode=display&showOnlyOutputs=false&' + option_str;
+
+console.log(url);
+
+page.open(url, function () {
+    // impose a slight delay to make sure the page loads completely before working
+    window.setTimeout(function () {
+
+      // hide extraneous components and resize
+      page.evaluate(function() {
+          $("#experimentalHeader").hide();
+          $("#footer").hide();
+          $("#vizLayoutTdFirst").hide();
+          $('#pyOutputPane').width($('table.visualizer').width());
+      });
+
+      // grab maximum instruction from the page itself
+      var maxInstr = page.evaluate(function() {
+          return myVisualizer.curTrace.length - 1;
+      });
+
+      // ignore step 0 since there's nothing interesting to render there
+      for (var i=1; i <= maxInstr; i++) {
+          page.evaluate(function(i) {
+              myVisualizer.curInstr = i;
+              myVisualizer.updateOutput();
+          }, i /* pass i in here */);
+          var outfn = '/tmp/' + basename + '.step.' + (i+1) + '.png';
+          page.render(outfn);
+          if (DEBUG) {
+            console.log('Rendered step ' + (i+1) + ' / ' + (maxInstr+1), '\t' + outfn);
+          }
+      }
+
+      phantom.exit()
+
+    }, 1000);
+});
diff --git a/v3/tests/frontend-tests/opt_frontend_golden_test.py b/v3/tests/frontend-tests/opt_frontend_golden_test.py
new file mode 100644
index 000000000..462276b29
--- /dev/null
+++ b/v3/tests/frontend-tests/opt_frontend_golden_test.py
@@ -0,0 +1,175 @@
+''' 
+Golden tests for OPT frontend JS rendering
+Created on 2014-04-21
+
+Pre-reqs:
+- phantomjs installed (tested on v1.9.2)
+- ImageMagick installed to do fuzzy image diffing
+  (tested on Version: ImageMagick 6.8.8-3 Q16 x86_64 2014-01-12 http://www.imagemagick.org)
+  http://www.imagemagick.org/Usage/compare/
+- OPT running locally on localhost:8080 using "python bottle_server.py"
+- execute from the current directory
+
+---
+Forked from ../golden_test.py
+
+A simple framework for regression testing based on golden files
+by Philip Guo
+
+(sloppily) customized for the Online Python Tutor project
+'''
+
+# test with different display options
+'''
+HTML_DICT = {
+  'regular': 'visualize.html',
+  'csc108h': 'csc108h.html',
+  'composingprograms': 'composingprograms.html',
+}
+'''
+
+OPTIONS_DICT = {
+  'regular': 'cumulative=false&heapPrimitives=false&drawParentPointers=false&textReferences=false&py=2',
+  'csc108h': 'cumulative=false&heapPrimitives=true&drawParentPointers=false&textReferences=true&py=2',
+  'composingprograms': 'cumulative=true&heapPrimitives=false&drawParentPointers=false&textReferences=false&py=3',
+}
+
+import os, re, shutil, optparse, filecmp
+from subprocess import *
+
+RED   = '\033[91m'
+ENDC  = '\033[0m'  # end color
+
+
+def execute(input_filename, option_name):
+  assert os.path.isfile(input_filename)
+  (base, ext) = os.path.splitext(input_filename)
+
+  args = [input_filename, 'localhost:8080', 'visualize.html', OPTIONS_DICT[option_name]]
+  (stdout, stderr) = Popen(PROGRAM + args,
+                           stdout=PIPE, stderr=PIPE).communicate()
+
+
+def clobber_golden_file(outfile, golden_file):
+  print '  Clobber %s => %s' % (outfile, golden_file)
+  shutil.copy(outfile, golden_file)
+
+# trivial EXACT FILE MATCH comparison, which works only if you're
+# running on the exact same machine!
+'''
+def png_files_differ(f1, f2):
+    return not filecmp.cmp(f1, f2)
+'''
+
+# fuzzy image comparison using ImageMagick
+# see: http://www.imagemagick.org/Usage/compare/
+# compare -metric AE -fuzz 1% aliasing.txt.step.2.png.regular.png  ../golden-files/regular/aliasing.txt.step.3.png -compose src -highlight-color White -lowlight-color Black cmp.png
+DIFF_PNG = '/tmp/diff.png'
+def png_files_differ(f1, f2):
+
+    # adjust fuzz to a higher percentage if it's not sensitive enough
+    # /tmp/diff.png shows pixel differences,
+    # and the number of differed pixels is sent to stderr
+    cmdline = ['compare', '-metric', 'AE', '-fuzz', '3%',
+               f1, f2,
+               '-compose', 'src', '-highlight-color', 'White',
+               '-lowlight-color', 'Black', DIFF_PNG]
+    (stdout, stderr) = Popen(cmdline, stdout=PIPE, stderr=PIPE).communicate()
+    assert stderr
+    if 'image widths or heights differ' in stderr:
+        if os.path.isfile(DIFF_PNG):
+            os.remove(DIFF_PNG)
+        return True
+    else:
+        num_pixels_diff = int(stderr)
+        return num_pixels_diff != 0
+
+
+def run_test(input_filename, clobber_golden=False):
+    try:
+        print 'Testing', input_filename
+        bn = os.path.basename(input_filename)
+
+        # test all frontend display options
+        for option in OPTIONS_DICT:
+            print "  " + option
+            execute(input_filename, option)
+
+            output_png_files = [e for e in os.listdir('.') if bn + '.step.' in e]
+            if not output_png_files:
+                print "    " + RED + "no output .png files, maybe server is down?" + ENDC
+                
+
+            for e in output_png_files:
+                golden_file = 'golden-files/' + option + '/' + e
+
+                if os.path.isfile(golden_file):
+                    if png_files_differ(e, golden_file):
+                        print "    " + RED + e + " differs, moved to failed-tests/" + ENDC
+
+                        # save it under a new name in failed-tests/
+                        newname = 'failed-tests/' + os.path.splitext(e)[0] + '.' + option + '.png'
+                        os.rename(e, newname)
+                        # ... and the diff too, if it exists:
+                        if os.path.isfile(DIFF_PNG):
+                            os.rename(DIFF_PNG, os.path.splitext(newname)[0] + '.diff.png')
+
+                        if clobber_golden:
+                            clobber_golden_file(newname, golden_file)
+                else:
+                    clobber_golden_file(e, golden_file)
+
+    finally:
+        # do a crude cleanup pass at the very end of the test
+        # to not interfere as much with Dropbox's weird behavior
+        for e in os.listdir('.'):
+            if '.step.' in e:
+                os.remove(e)
+
+
+def run_all_tests(clobber=False):
+  for t in ALL_TESTS:
+    run_test(t, clobber)
+
+
+if __name__ == "__main__":
+  parser = optparse.OptionParser()
+  parser.add_option("--all", action="store_true", dest="run_all",
+                    help="Run all tests")
+  parser.add_option("--clobber", action="store_true", dest="clobber",
+                    help="Clobber golden files when running tests")
+  parser.add_option("--test", dest="test_name",
+                    help="Run one test")
+  (options, args) = parser.parse_args()
+
+  PROGRAM = ['phantomjs', '../../screenshot-renderer/render-opt-screenshots.js']
+
+  # grab a representative subset of backend tests
+  # don't need ALL of them since they run way too slowly
+  ALL_TESTS = ['../example-code/aliasing.txt',
+               '../example-code/fact.txt',
+               '../example-code/filter.txt',
+               '../example-code/aliasing/aliasing8.txt',
+               '../example-code/oop_inherit.txt',
+               '../example-code/linked-lists/ll1.txt',
+               '../example-code/sum-list.txt',
+               '../example-code/closures/closure3.txt',
+               'basic-data-structures.py',
+               'criss-cross.py',
+               'binary-tree.py',
+               'circular.py',
+               'double-nudge.py',
+               ]
+
+  if options.run_all:
+    if options.clobber:
+      print 'Running all tests and clobbering results ...'
+    else:
+      print 'Running all tests ...'
+    run_all_tests(options.clobber)
+  elif options.test_name:
+    assert options.test_name in ALL_TESTS
+    run_test(options.test_name, options.clobber)
+  else:
+    parser.print_help()
+
diff --git a/v3/tests/golden_test.py b/v3/tests/golden_test.py
new file mode 100644
index 000000000..25af5f03e
--- /dev/null
+++ b/v3/tests/golden_test.py
@@ -0,0 +1,195 @@
+''' 
+A simple framework for regression testing based on golden files
+by Philip Guo
+
+(sloppily) customized for the Online Python Tutor project
+
+THIS ONLY WORKS ON Python 2.7 and 3.2
+(note that Python 3.3 gives all sorts of weird non-deterministic errors, so use Python 3.2 for now)
+
+Also note that the Python 3 tests aren't as "robust" or as rigorously checked ...
+I've been focusing on Python 2 for now.
+'''
+
+import itertools
+import os, re, shutil, optparse, difflib
+from subprocess import *
+
+RED   = '\033[91m'
+ENDC  = '\033[0m'  # end color
+
+def filter_output(s):
+  return s
+
+
+def execute(input_filename):
+  assert os.path.isfile(input_filename)
+  (base, ext) = os.path.splitext(input_filename)
+  assert ext == INPUT_FILE_EXTENSION
+
+  (stdout, stderr) = Popen(PROGRAM + [input_filename], stdout=PIPE, stderr=PIPE).communicate()
+
+  if stderr:
+    print '(has stderr)'
+  #  print '  stderr {'
+  #  print stderr, '}'
+  else:
+    print
+
+  # capture stdout into outfile, filtering out machine-specific addresses
+  outfile = base + OUTPUT_FILE_EXTENSION
+  outf = open(outfile, 'w')
+
+  for line in stdout.splitlines():
+    filtered_line = re.sub(' 0x.+?>', ' 0xADDR>', line)
+    print >> outf, filtered_line
+
+  outf.close()
+
+
+def clobber_golden_file(golden_file):
+  (base, ext) = os.path.splitext(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+  print '  Clobber %s => %s' % (outfile, golden_file)
+  shutil.copy(outfile, golden_file)
+
+
+# returns True if there is a diff, False otherwise
+def golden_differs_from_out(golden_file):
+  (base, ext) = os.path.splitext(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+  assert os.path.isfile(golden_file)
+
+  golden_s = open(golden_file).readlines()
+  out_s = open(outfile).readlines()
+
+  golden_s_filtered = filter_output(golden_s)
+  out_s_filtered = filter_output(out_s)
+
+  return out_s_filtered != golden_s_filtered
+
+
+def diff_test_output(test_name):
+  (base, ext) = os.path.splitext(test_name)
+
+  golden_file = base + GOLDEN_FILE_EXTENSION
+  assert os.path.isfile(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+
+  golden_s = open(golden_file).readlines()
+  out_s = open(outfile).readlines()
+
+  golden_s_filtered = filter_output(golden_s)
+  out_s_filtered = filter_output(out_s)
+
+  first_line = True
+  for line in difflib.unified_diff(golden_s_filtered, out_s_filtered, \
+                                   fromfile=golden_file, tofile=outfile):
+    if first_line:
+      print # print an extra line to ease readability
+      first_line = False
+    print line,
+
+
+def run_test(input_filename, clobber_golden=False):
+  print 'Testing', input_filename,
+
+  (base, ext) = os.path.splitext(input_filename)
+  assert ext == INPUT_FILE_EXTENSION
+
+  # to eliminate possibility of using stale output:
+  outfile = base + OUTPUT_FILE_EXTENSION
+  if os.path.isfile(outfile):
+    os.remove(outfile)
+
+  input_fullpath = input_filename
+  execute(input_fullpath)
+
+  golden_file = base + GOLDEN_FILE_EXTENSION
+  if os.path.isfile(golden_file):
+    if golden_differs_from_out(golden_file):
+      print "  " + RED + "FAILED!!!" + ENDC
+    if clobber_golden:
+      clobber_golden_file(golden_file)
+  else:
+    clobber_golden_file(golden_file)
+
+
+def run_all_tests(clobber=False):
+  for t in ALL_TESTS:
+    run_test(t, clobber)
+
+def diff_all_test_outputs():
+  for t in ALL_TESTS:
+    diff_test_output(t)
+
+
+if __name__ == "__main__":
+  parser = optparse.OptionParser()
+  parser.add_option("--all", action="store_true", dest="run_all",
+                    help="Run all tests")
+  parser.add_option("--only-clobber", action="store_true", dest="only_clobber",
+                    help="Clobber ALL golden files WITHOUT re-running tests")
+  parser.add_option("--clobber", action="store_true", dest="clobber",
+                    help="Clobber golden files when running tests")
+  parser.add_option("--test", dest="test_name",
+                    help="Run one test")
+  parser.add_option("--difftest", dest="diff_test_name",
+                    help="Diff against golden file for one test")
+  parser.add_option("--diffall", action="store_true", dest="diff_all",
+                    help="Diff against golden file for all tests")
+  parser.add_option("--py3", action="store_true", dest="py3",
+                    help="Run tests using Python 3.2 (rather than Python 2.7)")
+  (options, args) = parser.parse_args()
+
+
+  INPUT_FILE_EXTENSION = '.txt' # input test files are .txt, NOT .py
+
+  if options.py3:
+    PROGRAM = ['python3.2', '../generate_json_trace.py']
+    OUTPUT_FILE_EXTENSION = '.out_py3'
+    GOLDEN_FILE_EXTENSION = '.golden_py3'
+  else:
+    PROGRAM = ['python2.7', '../generate_json_trace.py']
+    OUTPUT_FILE_EXTENSION = '.out'
+    GOLDEN_FILE_EXTENSION = '.golden'
+
+  ALL_TESTS = []
+
+  for (pwd, subdirs, files) in itertools.chain(os.walk('backend-tests/'), os.walk('../example-code/')):
+    for f in files:
+      (base, ext) = os.path.splitext(f)
+      if ext == INPUT_FILE_EXTENSION:
+        fullpath = os.path.join(pwd, f)
+        # skip some annoying known-to-fail tests
+        if not options.py3 and f in ('infinite-loop-try-except.txt',):
+          continue
+        ALL_TESTS.append(fullpath)
+
+
+  if options.run_all:
+    if options.clobber:
+      print 'Running all tests and clobbering results ...'
+    else:
+      print 'Running all tests ...'
+    run_all_tests(options.clobber)
+
+  elif options.diff_all:
+    diff_all_test_outputs()
+  elif options.diff_test_name:
+    assert options.diff_test_name in ALL_TESTS
+    diff_test_output(options.diff_test_name)
+  elif options.test_name:
+    assert options.test_name in ALL_TESTS
+    run_test(options.test_name, options.clobber)
+  elif options.only_clobber:
+    for t in ALL_TESTS:
+      (base, ext) = os.path.splitext(t)
+      golden_file = base + GOLDEN_FILE_EXTENSION
+      clobber_golden_file(golden_file)
+  else:
+    parser.print_help()
+
diff --git a/v3/tests/run-all-tests.sh b/v3/tests/run-all-tests.sh
new file mode 100755
index 000000000..40b4e7577
--- /dev/null
+++ b/v3/tests/run-all-tests.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+echo 'Python 2.7 test'
+echo '==============='
+python golden_test.py --all
+echo
+echo 'Python 3.2 test'
+echo '==============='
+python golden_test.py --all --py3
diff --git a/v3/ts-example-code/greeter-generics.ts b/v3/ts-example-code/greeter-generics.ts
new file mode 100644
index 000000000..de5d30adb
--- /dev/null
+++ b/v3/ts-example-code/greeter-generics.ts
@@ -0,0 +1,18 @@
+// adapted from an example at http://www.typescriptlang.org/Playground
+class Greeter<T> {
+    greeting: T;
+    constructor(message: T) {
+        this.greeting = message;
+    }
+    greet() {
+        return this.greeting;
+    }
+}
+
+var strGreeter = new Greeter<string>("Hello, world");
+console.log(strGreeter.greet());
+
+// change x to a number to fix error
+var x = 'not a number';
+var numGreeter = new Greeter<number>(x);
+console.log(numGreeter.greet());
diff --git a/v3/ts-example-code/greeter.ts b/v3/ts-example-code/greeter.ts
new file mode 100644
index 000000000..7fcdc5c65
--- /dev/null
+++ b/v3/ts-example-code/greeter.ts
@@ -0,0 +1,15 @@
+// adapted from an example at http://www.typescriptlang.org/Playground
+class Greeter {
+    greeting: string;
+    constructor(message: string) {
+        this.greeting = message;
+    }
+    greet() {
+        return "Hello, " + this.greeting;
+    }
+}
+
+
+var greeter = new Greeter("world");
+
+console.log(greeter.greet());
diff --git a/v3/ts-example-code/hello.ts b/v3/ts-example-code/hello.ts
new file mode 100644
index 000000000..dc5f6c43a
--- /dev/null
+++ b/v3/ts-example-code/hello.ts
@@ -0,0 +1,7 @@
+var s: string = 'world';
+
+function yo(x: string) {
+  console.log('Hello ' + x);
+}
+
+yo(s);
diff --git a/v3/ts-example-code/inheritance.ts b/v3/ts-example-code/inheritance.ts
new file mode 100644
index 000000000..e912c1ffe
--- /dev/null
+++ b/v3/ts-example-code/inheritance.ts
@@ -0,0 +1,29 @@
+// Inheritance example from http://www.typescriptlang.org/Playground
+class Animal {
+    constructor(public name: string) { }
+    move(meters: number) {
+        console.log(this.name + " moved " + meters + "m.");
+    }
+}
+
+class Snake extends Animal {
+    constructor(name: string) { super(name); }
+    move() {
+        console.log("Slithering...");
+        super.move(5);
+    }
+}
+
+class Horse extends Animal {
+    constructor(name: string) { super(name); }
+    move() {
+        console.log("Galloping...");
+        super.move(45);
+    }
+}
+
+var sam = new Snake("Sammy the Python");
+var tom: Animal = new Horse("Tommy the Palomino");
+
+sam.move();
+tom.move(34);
diff --git a/v3/ttt_module.py b/v3/ttt_module.py
new file mode 100644
index 000000000..a1031a302
--- /dev/null
+++ b/v3/ttt_module.py
@@ -0,0 +1,173 @@
+"""
+Tic Tac Toe (and more generally, 2-D grid environments) that display in browser.
+
+Created by Peter Norvig
+
+NB: need to work on both Python 2 and 3
+"""
+
+##############################################################################
+# CSS and HTML
+##############################################################################
+
+if False:
+  def setCSS(text):
+    "Set (or append??) CSS to be text."
+    global __CSS__
+    __CSS__ = text
+    print('setCSS: ' + text)
+
+  def setHTML(text):
+    "Set (or append??) HTML to be text."
+    global __HTML__
+    __HTML__ = text
+    print('setHTML: ' + text)
+
+
+def tagger(tagname):
+    "Make a function that can be used to generate HTML."
+    def tagfn(*content, **kwargs):
+        args = ('' if not kwargs else
+                ' ' + ' '.join('{}={!r}'.format(k, kwargs[k]) for k in kwargs))
+        return "<{}{}>{}</{}>".format(
+               tagname, args, join(content), tagname)
+    #tagfn.__name__ = tagname # not allowed in OPT sandbox
+    return tagfn
+
+A, B, I, P, TABLE, TR, TD, TH = map(tagger, 'A B I P, TABLE TR TD TH'.split())
+
+def join(content):
+    "Like ' '.join(content), but recurses into nested lists."
+    return (content if isinstance(content, str) else
+            ' '.join(map(join, content)) if isinstance(content, (list, tuple)) else
+        str(content))
+
+# Python 3 doesn't have xrange, so bind it to range
+try:
+  _ = xrange
+except NameError:
+  xrange = range
+
+def table(matrix, **kwargs):
+    """Given [[a, b, c], [d, e, f]], lay it out as a table.
+    Each cell gets an id number, starting at 0.  Table can have kwargs."""
+    ints = iter(xrange(1000000))
+    return TABLE([TR([TD(c, id=next(ints)) for c in row])
+                  for row in matrix],
+                 **kwargs)
+
+
+css = """#htmlOutputDiv table, #htmlOutputDiv td, #htmlOutputDiv th {
+  background-color: white;
+  border-collapse: collapse;
+  border: 2px solid black; }
+#htmlOutputDiv td, #htmlOutputDiv th {
+  width: 30px;
+  height: 30px;
+  font-family: sans-serif;
+  text-align: center; }"""
+
+
+
+class Game(object):
+    "Move stuff here later"
+    pass
+
+class TTTGame(Game):
+    def __init__(self, player1, player2, verbose=True):
+        print('Initializing TTTGame')
+        self.board = [' '] * 9 # board is 1-D array of squares; can be mapped to 2-D.
+        self.tomove = 0
+        self.symbols = ['X', 'O']
+        self.players = [player1, player2] # player strategy functions
+        self.lines = [(0, 1, 2), (3, 4, 5), (6, 7, 8),
+                      (0, 3, 6), (1, 4, 7), (2, 5, 8),
+                      (0, 4, 8), (2, 4, 6)]
+        self.winner = None
+        self.verbose = verbose
+
+        # mouse handler for board
+        # TODO: clean this up
+        setJS("$('#htmlOutputDiv table td').click(function(){myVisualizer.executeCodeWithRawInputFunc($(this).attr('id'), myVisualizer.curInstr)})")
+
+
+    def draw(self):
+        setCSS(css)
+        s = table([[self.board[3*r + c] for c in range(3)] for r in range(3)])
+        if self.over():
+          s += P('Game over; ', 'nobody' if self.winner is None else self.symbols[self.winner], ' wins')
+        else:
+          s +=  P(self.symbols[self.tomove] + ' to play')
+        if self.verbose: print(s)
+        setHTML(s)
+        return s
+
+    def play(self):
+      self.draw()
+      #while not self.over():
+      for i in range(2):
+        p = self.tomove
+        move = self.players[p](list(self.board), self.symbols[p])
+        self.makemove(move)
+        self.draw()
+
+    def displayWarning(self, msg):
+      print('WARNING! ' + msg)
+
+    def makemove(self, move):
+        player = self.tomove
+        print('making move ' + str(move) + ' for player ' + str(player))
+        if self.over():
+            self.displayWarning('game over, no more moves')
+        elif move not in range(9):
+            self.displayWarning('not a legal square ' + str(move))
+            return None
+        elif self.board[move] != ' ':
+            self.displayWarning('not an empty square ' + str(move))
+            return None
+        else:
+            self.board[move] = self.symbols[player]
+            self.tomove = other(player)
+            return move
+
+    def legal(self, move):
+        "A legal move is an index to a blank square."
+        return move in range(9) and self.board[move] == ' '
+
+    def over(self):
+        "Return True when game is over."
+        if ' ' not in self.board:
+            winner = None
+            return True # no moves left; game is a draw
+        for player in [0, 1]:
+            for line in self.lines:
+                if self.linecount(line, player) == 3:
+                    self.winner = player
+                    return True
+        return False
+
+    def playgame(self):
+        while not self.over():
+            self.makemove()
+
+    def linecount(self, line, player):
+        "Return the number of pieces that player (0 or 1) has on this line."
+        return [self.board[i] for i in line].count(self.symbols[player])
+
+    def illegalmove(self, move):
+        "Report that move is illegal; decrement remaining count for player."
+        ## How to report ???
+        self.allowed_illegal_moves[self.tomove] -= 1
+        if self.allowed_illegal_moves[self.tomove] < 0:
+            ### Report game over on illegal move ???
+            self.winner = other(self.tomove)
+
+    def copystate(self):
+        clone = TTTGame(*self.players)
+        clone.tomove = self.tomove
+        clone.board = list(self.board)
+        return clone
+
+
+def other(player): return 1 - player
+
diff --git a/v3/typescript.html b/v3/typescript.html
new file mode 100644
index 000000000..40b78f4ab
--- /dev/null
+++ b/v3/typescript.html
@@ -0,0 +1,352 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>TypeScript Tutor - Visualize TypeScript code execution to learn TypeScript online</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<link type="text/css" href="css/jquery.ui.chatbox.css" rel="stylesheet" />
+<script type="text/javascript" src="js/jquery.ui.chatbox.js"></script>
+
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<script type="text/javascript" src="js/holistic.js"></script>
+<link rel="stylesheet" href="css/holistic.css"/>
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-frontend.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+<script type="text/javascript" src="js/socket.io-client/socket.io.js"></script>
+
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<script type="text/javascript">
+
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-34795707-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
+
+</head>
+
+<body>
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+
+<!--
+
+<div id="adInfo" style="font-size: 8pt; width: 180px; margin-bottom: 15px;">
+
+<a href="#" id="hideHeaderLink">Hide banner ad</a>
+
+<br/><br/>
+This tool is free and <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">open-source</a>.
+Ads pay for web hosting costs.
+
+-->
+
+</div>
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 7pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div>
+<button id="getTutorBtn" type="button" class="togetherjsBtn" style="display: none;">
+Get help from a tutor
+</button>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+<td valign="top">
+
+<div id="togetherjsStatus"></div>
+
+<div id="surveyHeader"></div>
+
+<div id="adHeader" style="margin-left: 15px; margin-bottom: 35px;">
+
+<div id="optHeader" style="font-family: Georgia, Palatino, Times, serif; font-size: 13pt; margin-bottom: 10px;">
+TypeScript Tutor - Visualize TypeScript code execution to learn TypeScript online
+
+<p style="font-size: 10pt";>
+(also visualize
+<a href="visualize.html#py=2">Python</a>,
+<a href="java.html">Java</a>,
+<a href="javascript.html">JavaScript</a>,
+<a href="typescript.html">TypeScript</a>,
+<a href="ruby.html">Ruby</a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html">C</a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++</a>
+code)
+</p>
+
+</div>
+
+<!--
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<ins class="adsbygoogle"
+     style="display:inline-block;width:728px;height:90px"
+     data-ad-client="ca-pub-7519401450079227"
+     data-ad-slot="9796201192"></ins>
+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
+</script>
+-->
+
+</div>
+
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write TypeScript code here:
+
+  <select id="pythonVersionSelector" style="display: none;">
+    <option value="ts">TypeScript</option>
+  </select>
+
+</div>
+
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+
+<div id="javaOptionsPane" style="margin-top: 20px;">
+[<i>coming soon!</i>] Java options: pass in command-line arguments and feed user input to stdin
+</div>
+
+
+<div id="optionsPane" style="margin-top: 18px; line-height: 150%; display: none;">
+  <select id="cumulativeModeSelector" style="display: none;">
+    <option value="false">hide exited frames [default]</option>
+  </select>
+  <select id="heapPrimitivesSelector" style="display: none;">
+    <option value="false">inline primitives &amp; nested objects [default]</option>
+  </select>
+  <select id="textualMemoryLabelsSelector" style="display: none;">
+    <option value="false">draw pointers as arrows [default]</option>
+  </select>
+
+  <!-- hide these for now -->
+  <select id="drawParentPointerSelector" style="display: none;">
+    <option value="false">hide environment parent pointers (default)</option>
+    <!--<option value="true">show environment parent pointers</option>-->
+  </select>
+  <select id="showOnlyOutputsSelector" style="display: none;">
+    <option value="false">show everything (default)</option>
+    <!--<option value="true">show only outputs</option>-->
+  </select>
+</div>
+
+
+<p style="margin-top: 25px;"><a href="#" id="createTestsLink">Create test cases</a></p>
+
+<div id="testCasesPane"></div>
+
+<p style="margin-top: 25px; font-weight: bold;">TypeScript Examples</p>
+
+<p style="margin-top: 5px;">
+  <a class="exampleLink" id="tsHelloExLink" href="#">hello</a> |
+  <a class="exampleLink" id="tsGreeterExLink" href="#">classes</a> |
+  <a class="exampleLink" id="tsInheritanceExLink" href="#">inheritance</a> |
+  <a class="exampleLink" id="tsGreeterGenericsExLink" href="#">generics</a>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<div id="embedLinkDiv">
+<p>
+  <button id="genEmbedBtn" class="smallBtn" type="button">Generate embed code</button> <input type="text" id="embedCodeOutput" size="70"/>
+</p>
+
+<p>To embed this visualization in your webpage, click the 'Generate
+embed code' button above and paste the resulting HTML code into your
+webpage. Adjust the height and width parameters and
+change the link to <b>https://</b> if needed.</p>
+</div>
+
+<p style="margin-top: 25px;">
+
+This tool runs <a href="http://www.typescriptlang.org">TypeScript</a> 1.4.1 in Node.js v0.10.25. <a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi/backends/javascript">Backend
+source code</a>.</p>
+
+<p style="margin-top: 30px;">Privacy Policy: By using Online Python
+Tutor, your visualized code, options, user interactions, text chats, and
+IP address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, the Online Python Tutor website (pythontutor.com) does
+not collect any personal information or session state from users, nor
+does it issue any cookies.</p>
+
+<!--
+
+<p>
+
+Third party vendors, including Google, use cookies to serve ads based on a
+user's prior visits to pythontutor.com. Google's use of the DoubleClick cookie
+enables it and its partners to serve ads to your users based on their visit to
+pythontutor.com and/or other sites on the Internet. Users may opt out of the use
+of the DoubleClick cookie by visiting Ads Settings. (Alternatively, users may
+opt out of a third-party vendor's use of cookies for interest based advertising
+by visiting <a href="http://www.aboutads.info/">aboutads.info</a>.) Some of our
+advertising partners may use cookies and web beacons on our site. Our
+advertising partners include Google Adsense. These third-party ad servers or ad
+networks use technology to the advertisements and links that appear on
+pythontutor.com send directly to your browsers. They automatically receive your
+IP address when this occurs. Other technologies (such as cookies, JavaScript,
+or Web Beacons) may also be used by the third-party ad networks to measure the
+effectiveness of their advertisements and / or to personalize the advertising
+content that you see.
+
+pythontutor.com has no access to or control over these cookies that are used by
+third-party advertisers. Consult the respective privacy policies of these
+third-party ad servers for more detailed information on their practices as well
+as for instructions about how to opt-out of certain practices. pythontutor.com's
+privacy policy does not apply to, and we cannot control the activities of, such
+other advertisers or web sites. If you wish to disable cookies, you may do so
+through your individual browser options.
+
+</p>
+
+-->
+
+<!--
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+-->
+
+<p style="margin-top: 25px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<div id="chat_div"></div>
+
+</body>
+</html>
diff --git a/v3/visualize.html b/v3/visualize.html
new file mode 100644
index 000000000..7696a04e4
--- /dev/null
+++ b/v3/visualize.html
@@ -0,0 +1,582 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<!--
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ -->
+
+<head>
+  <title>Visualize Python, Java, JavaScript, TypeScript, and Ruby code execution</title>
+
+  <meta http-equiv="Content-type" content="text/html; charset=UTF-8"/>
+
+<!-- requirements for pytutor.js -->
+<script type="text/javascript" src="js/d3.v2.min.js"></script>
+<script type="text/javascript" src="js/jquery-1.8.2.min.js"></script>
+<script type="text/javascript" src="js/jquery.ba-bbq.min.js"></script> <!-- for handling back button and URL hashes -->
+<script type="text/javascript" src="js/jquery.ba-dotimeout.min.js"></script> <!-- for event debouncing -->
+<script type="text/javascript" src="js/jquery.jsPlumb-1.3.10-all-min.js "></script> <!-- for rendering SVG connectors
+                                                                                         DO NOT UPGRADE ABOVE 1.3.10 OR ELSE BREAKAGE WILL OCCUR -->
+<script type="text/javascript" src="js/diff_match_patch.js"></script>
+
+<script type="text/javascript" src="js/jquery-ui-1.8.24.custom.min.js"></script> <!-- for sliders and other UI elements -->
+<link type="text/css" href="css/ui-lightness/jquery-ui-1.8.24.custom.css" rel="stylesheet" />
+
+<!-- for codeopticon, adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<!--
+<link type="text/css" href="css/jquery.ui.chatbox.css" rel="stylesheet" />
+<script type="text/javascript" src="js/jquery.ui.chatbox.js"></script>
+ -->
+
+<!-- for annotation bubbles -->
+<script type="text/javascript" src="js/jquery.qtip.min.js"></script>
+<link type="text/css" href="css/jquery.qtip.css" rel="stylesheet" />
+
+<script type="text/javascript" src="js/pytutor.js"></script>
+<link rel="stylesheet" href="css/pytutor.css"/>
+
+<!-- for holistic mode -->
+<!--
+<script type="text/javascript" src="js/holistic.js"></script>
+<link rel="stylesheet" href="css/holistic.css"/>
+ -->
+
+<!-- requirements for opt-frontend.js -->
+
+<!-- codemirror.net online code editor -->
+<!--
+<script type="text/javascript" src="js/codemirror/codemirror.js"></script>
+<link type="text/css" href="css/codemirror.css" rel="stylesheet" />
+<script type="text/javascript" src="js/codemirror/python.js"></script>
+ -->
+
+<!-- Ace online code editor -->
+<script type="text/javascript" src="js/ace/src-min-noconflict/ace.js" charset="utf-8"></script>
+
+<script type="text/javascript" src="js/opt-frontend-common.js"></script>
+<script type="text/javascript" src="js/opt-frontend.js"></script>
+<link rel="stylesheet" href="css/opt-frontend.css"/>
+
+<!-- include this AFTER opt-frontend.js so that configuration
+     global variables are already defined at load time -->
+<script type="text/javascript" src="js/togetherjs/togetherjs-min.js"></script>
+
+<script type="text/javascript" src="js/socket.io-client/socket.io.js"></script>
+
+<script type="text/javascript" src="js/opt-testcases.js"></script>
+<link rel="stylesheet" href="css/opt-testcases.css"/>
+
+
+<script type="text/javascript">
+
+  var _gaq = _gaq || [];
+  _gaq.push(['_setAccount', 'UA-34795707-1']);
+  _gaq.push(['_trackPageview']);
+
+  (function() {
+    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+  })();
+
+</script>
+
+</head>
+
+<body>
+
+<table id="experimentalHeader">
+<tr>
+<td valign="top">
+
+<!--
+
+<div id="adInfo" style="font-size: 8pt; width: 180px; margin-bottom: 15px;">
+
+<a href="#" id="hideHeaderLink">Hide banner ad</a>
+
+<br/><br/>
+This tool is free and <a
+href="https://github.com/pgbovine/OnlinePythonTutor/">open-source</a>.
+Ads pay for web hosting costs.
+
+-->
+
+</div>
+
+<div id="ssDiv">
+  <button id="sharedSessionBtn" type="button" class="togetherjsBtn">
+  Start shared session
+  </button>
+  <div style="font-size: 7pt; margin-left: 2px; margin-top: 3px;">
+  <a href="https://www.youtube.com/watch?v=Z2TIjNArOK4" target="_blank">What are shared sessions?</a>
+  </div>
+</div>
+
+<div>
+<button id="getTutorBtn" type="button" class="togetherjsBtn" style="display: none;">
+Get help from a tutor
+</button>
+</div>
+
+<div id="sharedSessionDisplayDiv" style="display: none;">
+  <button id="stopTogetherJSBtn" type="button" class="togetherjsBtn">
+  End shared session
+  </button>
+
+  <div style="width: 200px; font-size: 8pt; color: #666; margin-top: 5px;">
+  Your chat logs and code may be recorded, anonymized, and analyzed for research.
+  </div>
+</div>
+
+</td>
+<td valign="top">
+
+<div id="togetherjsStatus"></div>
+
+<div id="surveyHeader"></div>
+
+<div id="adHeader" style="margin-left: 15px; margin-bottom: 35px;">
+
+<div id="optHeader" style="font-family: Georgia, Palatino, Times, serif; font-size: 13pt; margin-bottom: 10px;">
+<a href="index.html">Python Tutor</a>: Visualize
+Python,
+<a href="java.html">Java</a>,
+<a href="javascript.html">JavaScript</a>,
+<a href="typescript.html">TypeScript</a>,
+<a href="ruby.html">Ruby</a>,
+<a href="http://pgbovine.net/rosetta/c-demo.html">C</a>,
+and <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++</a>
+code execution
+
+</div>
+
+<!--
+<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
+<ins class="adsbygoogle"
+     style="display:inline-block;width:728px;height:90px"
+     data-ad-client="ca-pub-7519401450079227"
+     data-ad-slot="9796201192"></ins>
+<script>
+(adsbygoogle = window.adsbygoogle || []).push({});
+</script>
+-->
+
+</div>
+
+</td>
+</tr>
+</table>
+
+
+<div id="pyInputPane">
+
+<div id="codeInputWarnings">Write code in
+
+  <select id="pythonVersionSelector">
+    <option value="2">Python 2.7</option>
+    <option value="3">Python 3.3</option>
+    <!--<option value="2crazy">Py 2.crazy</option>-->
+    <option value="java">Java</option>
+    <option value="js">JavaScript</option>
+    <option value="ts">TypeScript</option>
+    <option value="ruby">Ruby</option>
+  </select>
+
+</div>
+
+<div id="someoneIsTypingDiv" style="color: #e93f34; font-weight: bold; display: none;">Someone is typing ...</div>
+
+<div id="codeInputPane"></div> <!-- populate with a CodeMirror or Ace code editor instance -->
+<div id="frontendErrorOutput"></div>
+<div id="surveyPane"></div>
+
+<p>
+<button id="executeBtn" class="bigBtn" type="button">Visualize Execution</button>
+</p>
+
+
+<div id="javaOptionsPane" style="margin-top: 20px;">
+[<i>coming soon!</i>] Java options: pass in command-line arguments and feed user input to stdin
+</div>
+
+
+<div id="optionsPane" style="margin-top: 18px; line-height: 150%;">
+  <select id="cumulativeModeSelector">
+    <option value="false">hide exited frames [default]</option>
+    <option value="true">show exited frames (Python)</option>
+    <!-- <option value="holistic">holistic mode (experimental)</option> -->
+  </select>
+  <select id="heapPrimitivesSelector">
+    <option value="false">inline primitives &amp; nested objects [default]</option>
+    <option value="true">render all objects on the heap</option>
+  </select>
+  <select id="textualMemoryLabelsSelector">
+    <option value="false">draw pointers as arrows [default]</option>
+    <option value="true">use text labels for pointers</option>
+  </select>
+
+  <!-- hide these for now -->
+  <select id="drawParentPointerSelector" style="display: none;">
+    <option value="false">hide environment parent pointers (default)</option>
+    <!--<option value="true">show environment parent pointers</option>-->
+  </select>
+  <select id="showOnlyOutputsSelector" style="display: none;">
+    <option value="false">show everything (default)</option>
+    <!--<option value="true">show only outputs</option>-->
+  </select>
+</div>
+
+
+<p style="margin-top: 25px;"><a href="#" id="createTestsLink">Create test cases</a></p>
+
+<div id="testCasesPane"></div>
+
+
+<p style="margin-top: 25px; font-weight: bold;">Python Examples</p>
+
+<p style="margin-top: 10px;">Basic:
+
+<a class="exampleLink" id="aliasExampleLink" href="#">hello</a> |
+<a class="exampleLink" id="happyExampleLink" href="#">happy</a> |
+<a class="exampleLink" id="tutorialExampleLink" href="#">intro</a> |
+<a class="exampleLink" id="filterExampleLink" href="#">filter</a> |
+<a class="exampleLink" id="strtokExampleLink" href="#">tokenize</a> |
+<a class="exampleLink" id="insSortExampleLink" href="#">insertion sort</a> |
+<a class="exampleLink" id="forElseLink" href="#">for-else</a> |
+<a class="exampleLink" id="rawInputExampleLink" href="#">user input</a>
+</p>
+
+<p style="margin-top: 15px;">Math:
+<a class="exampleLink" id="factExampleLink" href="#">factorial</a> |
+<a class="exampleLink" id="fibonacciExampleLink" href="#">fibonacci</a> |
+<a class="exampleLink" id="memoFibExampleLink" href="#">memoized fibonacci</a> |
+<a class="exampleLink" id="newtonExampleLink" href="#">square root</a> |
+<a class="exampleLink" id="pwGcdLink" href="#">gcd</a> |
+<a class="exampleLink" id="towersOfHanoiLink" href="#">towers of hanoi</a>
+</p>
+
+
+<p style="margin-top: 15px;">Objects:
+
+<a class="exampleLink" id="oop1ExampleLink" href="#">OOP 1</a> |
+<a class="exampleLink" id="oop2ExampleLink" href="#">OOP 2</a> |
+<a class="exampleLink" id="oopSmallExampleLink" href="#">OOP 3</a> |
+<a class="exampleLink" id="inheritanceExampleLink" href="#">inheritance</a>
+
+</p>
+
+<p style="margin-top: 15px;">Linked Lists:
+<a class="exampleLink" id="ll1Link" href="#">LL 1</a> |
+<a class="exampleLink" id="ll2Link" href="#">LL 2</a> |
+<a class="exampleLink" id="sumListLink" href="#">LL sum</a>
+</p>
+
+<p style="margin-top: 15px;">Pointer Aliasing:<br/>
+<a class="exampleLink" id="aliasing1Link" href="#">aliasing1</a> |
+<a class="exampleLink" id="aliasing2Link" href="#">aliasing2</a> |
+<a class="exampleLink" id="aliasing3Link" href="#">aliasing3</a> |
+<a class="exampleLink" id="aliasing4Link" href="#">aliasing4</a> |
+<a class="exampleLink" id="aliasing5Link" href="#">aliasing5</a> |
+<a class="exampleLink" id="aliasing6Link" href="#">aliasing6</a> |
+<a class="exampleLink" id="aliasing7Link" href="#">aliasing7</a> |
+<a class="exampleLink" id="aliasing8Link" href="#">aliasing8</a> |
+<a class="exampleLink" id="pwSumListLink" href="#">sumList</a>
+</p>
+
+<p style="margin-top: 15px;">Higher-Order Functions:<br/>
+
+<a class="exampleLink" id="closure1Link" href="#">closure1</a> |
+<a class="exampleLink" id="closure2Link" href="#">closure2</a> |
+<a class="exampleLink" id="closure3Link" href="#">closure3</a> |
+<a class="exampleLink" id="closure4Link" href="#">closure4</a> |
+<a class="exampleLink" id="closure5Link" href="#">closure5</a> |
+<a class="exampleLink" id="mapExampleLink" href="#">list map</a> |
+<a class="exampleLink" id="sumExampleLink" href="#">summation</a> |
+<a class="exampleLink" id="lambdaParamLink" href="#">lambda param</a>
+
+</p>
+
+<p style="margin-top: 15px;">Advanced:<br/>
+<a class="exampleLink" id="listCompLink" href="#">list comp</a> |
+<a class="exampleLink" id="compsLink" href="#">list/set/dict comp</a> |
+<a class="exampleLink" id="decoratorsLink" href="#">decorator</a> |
+<a class="exampleLink" id="genPrimesLink" href="#">generator</a> |
+<a class="exampleLink" id="genExprLink" href="#">genexpr</a> |
+<a class="exampleLink" id="varargsLink" href="#">varargs</a> |
+<a class="exampleLink" id="pwTryFinallyLink" href="#">exception</a> |
+<a class="exampleLink" id="metaclassLink" href="#">metaclass</a>
+</p>
+
+<p style="margin-top: 15px;">Python 3 only: <a class="exampleLink" id="tortureLink" href="#">student torture</a> |
+<a class="exampleLink" id="nonlocalLink" href="#">nonlocal</a>
+</p>
+
+<p style="margin-top: 25px; font-weight: bold;">Java Examples</p>
+
+<p>
+Basic:
+<a class="exampleLink" id="javaVarLink" href="#">Variables</a> |
+<a class="exampleLink" id="javaCFLink" href="#">ControlFlow</a> |
+<a class="exampleLink" id="javaSqrtLink" href="#">Sqrt</a> |
+<a class="exampleLink" id="javaExecLimitLink" href="#">ExecLimit</a> |
+<a class="exampleLink" id="javaStringsLink" href="#">Strings</a>
+</p>
+
+<p>
+Methods:
+<a class="exampleLink" id="javaPassByValLink" href="#">PassByValue</a> |
+<a class="exampleLink" id="javaRecurLink" href="#">Recursion</a> |
+<a class="exampleLink" id="javaSOLink" href="#">StackOverflow</a>
+</p>
+
+<p>
+OOP:
+<a class="exampleLink" id="javaRolexLink" href="#">Rolex</a> |
+<a class="exampleLink" id="javaPersonLink" href="#">Person</a> |
+<a class="exampleLink" id="javaComplexLink" href="#">Complex</a> |
+<a class="exampleLink" id="javaCastingLink" href="#">Casting</a>
+</p>
+
+<p>
+Data structures:
+<a class="exampleLink" id="javaLLLink" href="#">LinkedList</a> |
+<a class="exampleLink" id="javaStackQueueLink" href="#">StackQueue</a> |
+<a class="exampleLink" id="javaPostfixLink" href="#">Postfix</a> |
+<a class="exampleLink" id="javaSTLink" href="#">SymbolTable</a>
+</p>
+
+<p>
+Java features:
+<a class="exampleLink" id="javaToStringLink" href="#">ToString</a> |
+<a class="exampleLink" id="javaReflectLink" href="#">Reflect</a> |
+<a class="exampleLink" id="javaExceptionLink" href="#">Exception</a> |
+<a class="exampleLink" id="javaExceptionFlowLink" href="#">ExceptionFlow</a> |
+<a class="exampleLink" id="javaTwoClassesLink" href="#">TwoClasses</a>
+</p>
+
+<p>
+Misc:
+<a class="exampleLink" id="javaForestLink" href="#">Forest</a> |
+<a class="exampleLink" id="javaKnapsackLink" href="#">Knapsack</a> |
+<a class="exampleLink" id="javaStaticInitLink" href="#">StaticInitializer</a> |
+<a class="exampleLink" id="javaSyntheticLink" href="#">Synthetic</a>
+</p>
+
+<p style="margin-top: 5px;">(All Java examples created by <a href="https://github.com/daveagp">David Pritchard</a>)</p>
+
+<p style="margin-top: 25px; font-weight: bold;">JavaScript Examples</p>
+
+<p style="margin-top: 5px;">
+  <a class="exampleLink" id="jsFactExLink" href="#">factorial</a> |
+  <a class="exampleLink" id="jsDatatypesExLink" href="#">data types</a> |
+  <a class="exampleLink" id="jsExceptionExLink" href="#">exception</a> |
+  <a class="exampleLink" id="jsClosureExLink" href="#">closure</a> |
+  <a class="exampleLink" id="jsShadowingExLink" href="#">shadowing</a> |
+  <a class="exampleLink" id="jsConstructorExLink" href="#">constructor</a> |
+  <a class="exampleLink" id="jsInhExLink" href="#">inheritance</a>
+</p>
+
+<p style="margin-top: 25px; font-weight: bold;">TypeScript Examples</p>
+
+<p style="margin-top: 5px;">
+  <a class="exampleLink" id="tsHelloExLink" href="#">hello</a> |
+  <a class="exampleLink" id="tsGreeterExLink" href="#">classes</a> |
+  <a class="exampleLink" id="tsInheritanceExLink" href="#">inheritance</a> |
+  <a class="exampleLink" id="tsGreeterGenericsExLink" href="#">generics</a>
+</p>
+
+<p style="margin-top: 25px; font-weight: bold;">Ruby Examples</p>
+
+<p style="margin-top: 5px;">
+  <a class="exampleLink" id="rubyContainersLink" href="#">Containers</a> |
+  <a class="exampleLink" id="rubyGlobalsLink" href="#">Globals</a> |
+  <a class="exampleLink" id="rubyConstantsLink" href="#">Constants</a> |
+  <a class="exampleLink" id="rubyBlocksLink" href="#">Blocks</a> |
+  <a class="exampleLink" id="rubyBlocksScopingLink" href="#">Block scoping</a> |
+  <a class="exampleLink" id="rubyBlocksScoping3Link" href="#">More block scoping</a>
+  <p/>
+  <a class="exampleLink" id="rubyProcLink" href="#">Proc & Lambda</a> |
+  <a class="exampleLink" id="rubyProcScopingLink" href="#">Proc scoping</a> |
+  <a class="exampleLink" id="rubyProcReturnLink" href="#">Proc return</a> |
+  <a class="exampleLink" id="rubyLambdaScopingLink" href="#">Lambda scoping</a> |
+  <a class="exampleLink" id="rubyInheritanceLink" href="#">Inheritance</a> |
+  <a class="exampleLink" id="rubySymbolsLink" href="#">Symbols</a>
+  <p/>
+  <a class="exampleLink" id="rubyPrivateProtectedLink" href="#">Protected & private</a> |
+  <a class="exampleLink" id="rubyInstClassVarsComplexLink" href="#">Class & instance vars</a> |
+  <a class="exampleLink" id="rubyToplevelLink" href="#">Toplevel defs</a> |
+  <a class="exampleLink" id="rubyMegagreeterLink" href="#">Megagreeter</a>
+</p>
+
+</div>
+
+
+<div id="pyOutputPane">
+</div>
+
+<div id="footer">
+
+<p>
+  <button id="genUrlBtn" class="smallBtn" type="button">Generate permanent link</button> <input type="text" id="urlOutput" size="70"/>
+</p>
+
+<p>Click the button above to create a permanent link to your
+visualization. To report a bug, paste the link along with a brief error
+description in an email addressed to philip@pgbovine.net</p>
+
+<div id="embedLinkDiv">
+<p>
+  <button id="genEmbedBtn" class="smallBtn" type="button">Generate embed code</button> <input type="text" id="embedCodeOutput" size="70"/>
+</p>
+
+<p>To embed this visualization in your webpage, click the 'Generate
+embed code' button above and paste the resulting HTML code into your
+webpage. Adjust the height and width parameters and
+change the link to <b>https://</b> if needed.</p>
+</div>
+
+<p style="margin-top: 25px;">
+<a href="http://pythontutor.com/">Python Tutor</a> currently supports seven
+languages (despite its name!):</p>
+
+<p>1. Python <a href="http://www.python.org/doc/2.7/">2.7</a> and <a
+href="http://www.python.org/doc/3.3.0/">3.3</a> with limited module
+imports and no file I/O.
+The following modules may be imported: 
+bisect,
+collections,
+datetime,
+functools,
+heapq,
+itertools,
+json,
+math,
+operator,
+random,
+re,
+string,
+io/StringIO.
+<a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v3">Backend source code</a>.
+</p>
+
+<p>2. Java using OpenJDK Java 7. The original <a
+href="http://cscircles.cemc.uwaterloo.ca/java_visualize/">Java
+visualizer</a> was created by <a href="https://github.com/daveagp">David Pritchard</a> and Will Gwozdz.
+It supports
+<code><a href="http://introcs.cs.princeton.edu/java/stdlib/javadoc/StdIn.html">StdIn</a></code>, 
+<code><a href="http://introcs.cs.princeton.edu/java/stdlib/javadoc/StdOut.html">StdOut</a></code>, 
+most other <a href="http://introcs.cs.princeton.edu/java/stdlib"><tt>stdlib</tt> libraries</a>,
+<a href="http://introcs.cs.princeton.edu/java/43stack/Stack.java.html"><tt>Stack</tt></a>,
+<a href="http://introcs.cs.princeton.edu/java/43stack/Queue.java.html"><tt>Queue</tt></a>,
+and <a href="http://introcs.cs.princeton.edu/java/44st/ST.java.html"><tt>ST</tt></a>.
+(To access Java's built-in <tt>Stack</tt>/<tt>Queue</tt> classes, write
+<tt>import java.util.Stack;</tt> &mdash; note, <tt>import
+java.util.*;</tt> won't work.)
+Original source
+code: for <a href="https://github.com/daveagp/java_jail/tree/master/cp/traceprinter">the backend</a> and for <a href="https://github.com/daveagp/java_visualize">the frontend and installation
+instructions.</a></p>
+
+<p>3. JavaScript running in Node.js v0.10.25 in ES5 strict mode. <a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi/backends/javascript">Backend
+source code</a>.</p>
+
+<p>4. <a href="http://www.typescriptlang.org">TypeScript</a> 1.4.1 running in Node.js v0.10.25. <a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi/backends/javascript">Backend
+source code</a>.</p>
+
+<p>5. Ruby 2 using MRI 2.2.2. <a
+href="https://github.com/pgbovine/OnlinePythonTutor/tree/master/v4-cokapi/backends/ruby">Backend
+source code</a>.</p>
+
+<p>6. <a href="http://pgbovine.net/rosetta/c-demo.html">C using Valgrind</a> (full online support coming soon)</p>
+
+<p>7. <a href="http://pgbovine.net/rosetta/cpp-demo.html">C++ using Valgrind</a> (full online support coming soon)</p>
+
+<p style="margin-top: 30px;">Privacy Policy: By using Online Python
+Tutor, your visualized code, options, user interactions, text chats, and
+IP address are logged on our server and may be analyzed for research
+purposes. Nearly all Web services collect this basic information from
+users. However, the Online Python Tutor website (pythontutor.com) does
+not collect any personal information or session state from users, nor
+does it issue any cookies.</p>
+
+<!--
+
+<p>
+
+Third party vendors, including Google, use cookies to serve ads based on a
+user's prior visits to pythontutor.com. Google's use of the DoubleClick cookie
+enables it and its partners to serve ads to your users based on their visit to
+pythontutor.com and/or other sites on the Internet. Users may opt out of the use
+of the DoubleClick cookie by visiting Ads Settings. (Alternatively, users may
+opt out of a third-party vendor's use of cookies for interest based advertising
+by visiting <a href="http://www.aboutads.info/">aboutads.info</a>.) Some of our
+advertising partners may use cookies and web beacons on our site. Our
+advertising partners include Google Adsense. These third-party ad servers or ad
+networks use technology to the advertisements and links that appear on
+pythontutor.com send directly to your browsers. They automatically receive your
+IP address when this occurs. Other technologies (such as cookies, JavaScript,
+or Web Beacons) may also be used by the third-party ad networks to measure the
+effectiveness of their advertisements and / or to personalize the advertising
+content that you see.
+
+pythontutor.com has no access to or control over these cookies that are used by
+third-party advertisers. Consult the respective privacy policies of these
+third-party ad servers for more detailed information on their practices as well
+as for instructions about how to opt-out of certain practices. pythontutor.com's
+privacy policy does not apply to, and we cannot control the activities of, such
+other advertisers or web sites. If you wish to disable cookies, you may do so
+through your individual browser options.
+
+</p>
+
+-->
+
+<!--
+
+<p>Join the <a
+href="https://groups.google.com/forum/#!forum/pythontutor-users">pythontutor-users</a>
+mailing list to participate in user discussions and <a
+href="https://groups.google.com/forum/#!forum/pythontutor-announce">pythontutor-announce</a>
+to receive occasional announcements.
+(Your name and email address will be kept private; only the list owner can see them.)</p>
+
+-->
+
+<p style="margin-top: 25px;">
+Copyright &copy; <a href="http://www.pgbovine.net/">Philip Guo</a>.  All rights reserved.
+</p>
+
+</div>
+
+<!-- adapted from: http://reason.cs.illinois.edu/wenpu1/chatbox.html -->
+<div id="chat_div"></div>
+
+</body>
+</html>
diff --git a/v3/watch_module.py b/v3/watch_module.py
new file mode 100644
index 000000000..a8e229698
--- /dev/null
+++ b/v3/watch_module.py
@@ -0,0 +1,59 @@
+# Created by Peter Norvig
+
+# TODO: need to somehow enable sys._getframe()
+# even though 'sys' is technically locked down
+
+#import inspect  # old and really slow!
+import sys
+
+class watchedlist(list):
+    """A class that wraps a list, and monitors sets and gets.  
+    Optionally monitors local variables."""
+    def __setitem__(self, i, val):
+        print('setting A[{}] = {}'.format(i, val))
+        self.watchlocals()
+        return list.__setitem__(self, i, val)
+    def __getitem__(self, i):
+        print('fetching A[{}]; value is {};'.format(
+          self, i, list.__getitem__(self, i)))
+        self.watchlocals()
+        return list.__getitem__(self, i)
+        
+    def watchlocals(self):
+        if hasattr(self, 'watchedlocals'):
+            #D = inspect.stack()[2][0].f_locals # old and really slow!
+            D = sys._getframe(2).f_locals
+            print('    watched locals: {}'.format(
+                   {var: D[var] for var in self.watchedlocals}))
+        
+        
+def watch(object, watchedspec):
+    """Wrap object with a wrapper class (like watchedlist).
+    watchedspec is either None or a callable (like watchedlist), or
+    a 2-tuple of (callable, local_var_names), where local_var_names
+    can be a string or a sequence of strings."""
+    if not watchedspec:
+        return object
+    kind, locals = (watchedspec if isinstance(watchedspec, (tuple, list)) else
+                    (watchedspec, ()))
+    if isinstance(locals, str): locals = locals.split()
+    watched = kind(object)
+    watched.watchedlocals = locals
+    return watched
+        
+
+class watchfn(object):
+    """Decorator that watches the arguments of a function.
+    Specify watchedspecs for each positional argument, and optionally 
+    for keyword arguments."""
+    def __init__(self, *args, **kwargs):
+        self.args, self.kwargs = args, kwargs
+        
+    def __call__(self, fn):
+        def wrapped_fn(*args, **kwargs):
+            args = [watch(obj, spec) for (obj, spec) in zip(args, self.args)]
+            kwargs = {k: watch(kwargs[k], self.args.get(k, None)) for k in kwargs}
+            return fn(*args, **kwargs)
+        #wrapped_fn.__name__ = fn.__name__
+        return wrapped_fn
+
diff --git a/v3/web_exec.py b/v3/web_exec.py
new file mode 100644
index 000000000..06d0f3f8b
--- /dev/null
+++ b/v3/web_exec.py
@@ -0,0 +1,81 @@
+# <INSERT YOUR VERSION OF PYTHON HERE AS A #! LINE>
+
+# Minimal CGI script for Online Python Tutor (v3), tested under Python 2 and 3
+
+# If you want to run this script, then you'll need to change the
+# shebang #! line at the top of this file to point to your system's Python.
+#
+# Also, check CGI execute permission in your script directory.
+# You might need to create an .htaccess file like the following:
+#
+#   Options +ExecCGI
+#   AddHandler cgi-script .py
+
+
+import cgi
+import json
+import pg_logger
+import sys
+
+
+# set to true if you want to log queries in DB_FILE 
+LOG_QUERIES = False
+
+if LOG_QUERIES:
+  import os, datetime, create_log_db, sqlite3
+
+
+def cgi_finalizer(input_code, output_trace):
+  """Write JSON output for js/pytutor.js as a CGI result."""
+  ret = dict(code=input_code, trace=output_trace)
+  json_output = json.dumps(ret, indent=None) # use indent=None for most compact repr
+
+  if LOG_QUERIES:
+    # just to be paranoid, don't croak the whole program just
+    # because there's some error in logging it to the database
+    try:
+      # log queries into sqlite database.
+      # make sure that your web server's account has write permissions
+      # in the current directory, for logging to work properly
+      con = sqlite3.connect(create_log_db.DB_FILE)
+      cur = con.cursor()
+
+      cur.execute("INSERT INTO query_log VALUES (NULL, ?, ?, ?, ?, ?, ?)",
+                  (datetime.datetime.now(),
+                   os.environ.get("REMOTE_ADDR", "N/A"),
+                   os.environ.get("HTTP_USER_AGENT", "N/A"),
+                   os.environ.get("HTTP_REFERER", "N/A"),
+                   user_script,
+                   int(cumulative_mode)))
+      con.commit()
+      cur.close()
+    except Exception as err:
+      # this is bad form, but silently fail on error ...
+      print(err)
+
+  print("Content-type: text/plain; charset=iso-8859-1\n")
+  print(json_output)
+
+raw_input_json = None
+options_json = None
+
+# If you pass in a filename as an argument, then process script from that file ...
+if len(sys.argv) > 1:
+  user_script = open(sys.argv[1]).read()
+
+# Otherwise act like a CGI script with parameters:
+#   user_script
+#   raw_input_json
+#   options_json
+else:
+  form = cgi.FieldStorage()
+  user_script = form['user_script'].value
+  # for Python 2, immediately convert to utf-8 before passing input into program
+  if hasattr(user_script, 'decode'):
+    user_script = user_script.decode('utf-8')
+  if 'raw_input_json' in form:
+    raw_input_json = form['raw_input_json'].value
+  if 'options_json' in form:
+    options_json = form['options_json'].value
+
+pg_logger.exec_script_str(user_script, raw_input_json, options_json, cgi_finalizer)
diff --git a/v3/web_exec_java.py b/v3/web_exec_java.py
new file mode 100644
index 000000000..78b438ba8
--- /dev/null
+++ b/v3/web_exec_java.py
@@ -0,0 +1,6 @@
+#!/usr/local/bin/python
+
+# dummy NOP script just so Apache can log the request on the server
+
+print("Content-type: text/plain; charset=iso-8859-1\n")
+print("OK");
diff --git a/v3/web_exec_js.py b/v3/web_exec_js.py
new file mode 100644
index 000000000..78b438ba8
--- /dev/null
+++ b/v3/web_exec_js.py
@@ -0,0 +1,6 @@
+#!/usr/local/bin/python
+
+# dummy NOP script just so Apache can log the request on the server
+
+print("Content-type: text/plain; charset=iso-8859-1\n")
+print("OK");
diff --git a/v3/web_exec_ruby.py b/v3/web_exec_ruby.py
new file mode 100644
index 000000000..78b438ba8
--- /dev/null
+++ b/v3/web_exec_ruby.py
@@ -0,0 +1,6 @@
+#!/usr/local/bin/python
+
+# dummy NOP script just so Apache can log the request on the server
+
+print("Content-type: text/plain; charset=iso-8859-1\n")
+print("OK");
diff --git a/v3/web_exec_ts.py b/v3/web_exec_ts.py
new file mode 100644
index 000000000..78b438ba8
--- /dev/null
+++ b/v3/web_exec_ts.py
@@ -0,0 +1,6 @@
+#!/usr/local/bin/python
+
+# dummy NOP script just so Apache can log the request on the server
+
+print("Content-type: text/plain; charset=iso-8859-1\n")
+print("OK");
diff --git a/v3/yellow-happy-face.jpg b/v3/yellow-happy-face.jpg
new file mode 100644
index 000000000..712cb5323
Binary files /dev/null and b/v3/yellow-happy-face.jpg differ
diff --git a/v4-cokapi/Dockerfile b/v4-cokapi/Dockerfile
new file mode 100644
index 000000000..5b2d73e51
--- /dev/null
+++ b/v4-cokapi/Dockerfile
@@ -0,0 +1,85 @@
+# to build:
+# docker build -t="pgbovine/cokapi:v1" .
+#
+# to test:
+# docker run -t -i --rm --user=netuser --net=none --cap-drop all pgbovine/cokapi:v1 bash
+#
+# remember --rm or else stale old containers will be left around!
+# use "docker ps -a" to see all containers
+
+# don't use 'latest' tag since that might change
+FROM ubuntu:14.04.1
+MAINTAINER Philip Guo <philip@pgbovine.net>
+
+# if apt-get doesn't work, then follow these instructions:
+# http://stackoverflow.com/questions/24991136/docker-build-could-not-resolve-archive-ubuntu-com-apt-get-fails-to-install-a
+# Uncomment the following line in /etc/default/docker DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4"
+# Restart the Docker service sudo service docker restart
+#
+# lots of packages required especially to build ruby and to use the compiled version of 'gem'
+RUN apt-get update && apt-get install -y \
+  nodejs \
+  openjdk-7-jdk \
+  python \
+  build-essential \
+  zlibc \
+  zlib1g \
+  zlib1g-dev \
+  libssl-dev
+
+
+# ugh ubuntu calls node 'nodejs'
+RUN ln -s /usr/bin/nodejs /usr/bin/node
+
+
+# Ruby backend: pretty complex setup since we need to compile and
+# install a custom Ruby interpreter
+#
+# run all of this stuff early so that we don't invalidate the cache
+RUN mkdir /tmp/ruby
+# automatically untars
+ADD backends/ruby/custom-ruby-interpreter/ruby-2.2.2.tar.gz /tmp/ruby
+ADD backends/ruby/custom-ruby-interpreter/altered-files /tmp/ruby/ruby-2.2.2
+RUN mkdir /tmp/ruby/ruby-2.2.2-custom-OPT/
+RUN cd /tmp/ruby/ruby-2.2.2 && ./configure --prefix=/tmp/ruby/ruby-2.2.2-custom-OPT/
+# beware takes a long time! so make sure we cache the build
+RUN cd /tmp/ruby/ruby-2.2.2 && make && make install
+# install custom gem
+RUN /tmp/ruby/ruby-2.2.2-custom-OPT/bin/gem install debug_inspector
+
+
+# Java backend (put early in Dockerfile since it doesn't change as
+# frequently and takes longer to build)
+RUN mkdir /tmp/java_jail
+RUN mkdir /tmp/java_jail/cp
+ADD backends/java/java_jail/cp/ /tmp/java_jail/cp
+
+# compile all Java files within cp/
+RUN cd /tmp/java_jail/cp && find . -name "*.java" -print | xargs javac -Xlint:unchecked -cp .:javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar
+
+# JS and Python backends
+RUN mkdir /tmp/javascript
+RUN mkdir /tmp/python
+
+# IMPORTANT: make sure to run 'make deps' in backends/javascript first
+# to install the proper node modules inside of here via npm before
+# creating this Docker container, since it's a pain to install npm and
+# modules within the container
+ADD backends/javascript /tmp/javascript
+ADD backends/python /tmp/python
+
+COPY backends/java/run-java-backend.sh /tmp/
+RUN chmod a+x /tmp/run-java-backend.sh
+
+
+# Ruby backend
+COPY backends/ruby/pg_logger.rb /tmp/ruby/
+RUN cd /tmp/ruby && ln -s ruby-2.2.2-custom-OPT/bin/ruby
+
+# To properly run Ruby tests, become root:
+# $ docker run -t -i --rm --net=none --cap-drop all pgbovine/cokapi:v1 bash
+#COPY backends/ruby/golden_test.py /tmp/ruby/
+#RUN mkdir /tmp/ruby/tests
+#ADD backends/ruby/tests /tmp/ruby/tests
+
+RUN useradd netuser
diff --git a/v4-cokapi/Makefile b/v4-cokapi/Makefile
new file mode 100644
index 000000000..6a8e51a3d
--- /dev/null
+++ b/v4-cokapi/Makefile
@@ -0,0 +1,29 @@
+all:
+	jshint cokapi.js && node cokapi.js
+
+# start both http and https servers
+prod:
+	jshint cokapi.js && forever -l cokapi.log start cokapi.js &
+	jshint cokapi.js && forever -l cokapi-https.log start cokapi.js https &
+
+deps:
+	npm install express jshint serve-static sqlite3
+
+docker:
+	docker build -t="pgbovine/cokapi:v1" .
+
+dockerbash:
+	docker run -t -i --rm --user=netuser --net=none --cap-drop all pgbovine/cokapi:v1 bash
+
+test:
+	@echo 'Python'
+	@time --portability docker run --rm pgbovine/cokapi:v1 python /tmp/python/generate_json_trace.py --code="x=1; y=2; z=x+y"
+	@echo
+	@echo 'JS'
+	@time --portability docker run --rm pgbovine/cokapi:v1 node --expose-debug-as=Debug /tmp/javascript/jslogger.js --jsondump=true --code="var x=1; var y=2; var z=x+y;"
+	@echo
+	@echo 'Java'
+	@time --portability docker run -i --rm pgbovine/cokapi:v1 java -cp /tmp/java_jail/cp:/tmp/java_jail/cp/javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar traceprinter.InMemory < backends/java/java_jail/cp/traceprinter/test-input.txt
+	@echo
+	@echo 'Ruby'
+	@time --portability docker run -i --rm pgbovine/cokapi:v1 /tmp/ruby/ruby /tmp/ruby/pg_logger.rb -c "x = 1; y = 2"
diff --git a/v4-cokapi/README b/v4-cokapi/README
new file mode 100644
index 000000000..5b43c9360
--- /dev/null
+++ b/v4-cokapi/README
@@ -0,0 +1,9 @@
+2015-01-24 - This is an experimental version of OPT that adds support
+for multiple target languages under one unified app. It relies on node
+for the server and docker for sandboxing (if available).
+
+To install node dependencies, run 'make deps'
+
+---
+
+This directory provides only backends. Look in ../v3/ for the frontend.
diff --git a/v4-cokapi/backends/java/Makefile b/v4-cokapi/backends/java/Makefile
new file mode 100644
index 000000000..9438fe3ff
--- /dev/null
+++ b/v4-cokapi/backends/java/Makefile
@@ -0,0 +1,8 @@
+all:
+	cd java_jail/cp && find . -name "*.java" -print | xargs javac -Xlint:unchecked -cp .:javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar
+
+test:
+	java -Xmx128M -cp java_jail/cp:java_jail/cp/javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar:java_jail/cp/visualizer-stdlib traceprinter.InMemory < java_jail/cp/traceprinter/test-input.txt
+
+bigtest:
+	java -Xmx128M -cp java_jail/cp:java_jail/cp/javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar:java_jail/cp/visualizer-stdlib traceprinter.InMemory < big-input.txt 
diff --git a/v4-cokapi/backends/java/README b/v4-cokapi/backends/java/README
new file mode 100644
index 000000000..5ee5f79c3
--- /dev/null
+++ b/v4-cokapi/backends/java/README
@@ -0,0 +1,4 @@
+Checked out my own copy of https://github.com/daveagp/java_jail in early
+Feb 2014 into here as java_jail/, then made some local tweaks. (I didn't
+use git submodules since I couldn't figure out how to check in my local
+tweaks in a sensible way, ugh.)
diff --git a/v4-cokapi/backends/java/java_jail/.gitignore b/v4-cokapi/backends/java/java_jail/.gitignore
new file mode 100644
index 000000000..058820446
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/.gitignore
@@ -0,0 +1,6 @@
+*~
+*.class
+proc
+compile
+etc/resolv.conf
+lib
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/LICENSE b/v4-cokapi/backends/java/java_jail/LICENSE
new file mode 100644
index 000000000..2def0e883
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/LICENSE
@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/README b/v4-cokapi/backends/java/java_jail/README
new file mode 100644
index 000000000..7f7c4582f
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/README
@@ -0,0 +1,108 @@
+java_jail: chroot java jail, and JSON java trace printer
+David Pritchard (daveagp@gmail.com), created May 2013
+
+This is the backend for a Java version of Philip Guo's Python visualizer.
+Try it at: 
+      http://cscircles.cemc.uwaterloo.ca/java-visualize/
+
+This directory serves 2 purposes:
+ -- . serves as chroot (changed root) for executing Java programs
+ -- ./cp/traceprinter contains a Java program to print traces of Java
+    programs as they execute, printing the results to the same JSON
+    format used by http://pythontutor.com/
+    See ./cp/traceprinter/README for documentation on that part.
+
+The significant code in this directory is the documentation, and the 
+contents of ./cp/traceprinter. Both are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+This project would not be possible without the package
+com.sun.tools.example.trace, written by Robert Field. The traceprinter 
+package was initially created from that package.
+
+=== Setting up a chroot jail for java ===
+
+The good news is that java for linux is available as a single self-contained
+archive (we used jdk-7u21-linux-x64.gz). 
+
+The bad news is that it also uses various shared object files not contained
+in there, as well as various pseudo-files. So the chroot jail must also
+contain these.
+
+For chroot jail to work, the full contents of this directory should be:
+
+./java/: copy of unzipped java installation
+./{etc,lib64}/: necessary libraries
+./{dev,proc}/: necessary pseudo-files
+./cp/: we use this to hold application-specific java classpath stuff
+
+as well as README, LICENSE, and some .git files.
+
+Installation steps:
+
+(0) It is highly recommended to NOT put this directory anywhere accessible
+    via http, just for sanity's sake.
+(1) Get java. As of the time of writing, a suitable link for wget is: 
+
+wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" http://download.oracle.com/otn-pub/java/jdk/8u20-b26/jdk-8u20-linux-x64.tar.gz
+
+(props to http://stackoverflow.com/questions/10268583) 
+Extract java with gunzip and tar -xvf.
+Rename that jdk1.8.0_20 to "java"
+(2) You will need to copy some files from your system into ./lib64 --
+    see ./lib64/.gitignore for the list of what we use. If you end up
+    using more Java libraries, you might need to add more. We used
+    "strace -f"/ldd/lsof to figure out what to put there. You probably
+    can also just make a copy of all of /lib64 to ./lib64
+  * From Sasha Sirotkin: on Ubuntu, those files might instead need to
+    be copied from lib/x86_64-linux-gnu to ./lib/x86_64-linux-gnu
+(3) copy /etc/ld.so.cache to ./etc
+(4) mkdir ./proc, then you will need to mount /proc to ./proc -- use
+      EITHER:
+      To mount once (until reboot or "umount /path/to/chroot/proc")
+        sudo mount --bind -o ro,bind /proc /path/to/chroot/proc
+      To mount permanently, copy this line from /etc/mtab to /etc/fstab
+        /proc  /path/to/chroot/proc  none  ro,bind  0  0
+(5) Mount necessary devices to /dev
+        sudo mknod -m 0666 ./dev/null c 1 3
+        sudo mknod -m 0666 ./dev/random c 1 8
+        sudo mknod -m 0444 ./dev/urandom c 1 9
+(6) File system permissions. At a basic level, it is enough to
+    allow everything to be read and executed by everyone, and written by nobody.
+(7) iptables considerations. If you are running arbitrary user code,
+    you probably want to prevent them from accessing the internet.
+    But, the JDI requires access to a local debugging port to
+    communicate between the tracing VM and the traced VM. On our system,
+    all sandboxed executions run with group id 1000, so we have
+# to allow JDI:
+-A OUTPUT -p tcp -d 127.0.0.1 --dport 32000:65535 -m owner --gid-owner 1000 -j ACCEPT
+# to deny everything else:
+-A OUTPUT -m owner --gid-owner 1000 -j DROP
+
+If you want to allow connections to the outgoing world, particularly in Java,
+you will have to copy /etc/resolv.conf into the etc of the jail.
+
+=== Testing ===
+
+Assuming you have CEMC safeexec (https://github.com/cemc/safeexec)
+installed, here is a way how to test whether things are installed correctly.
+
+(0) Go in to ./cp and run "make" there
+
+(1) Run this command (from java_jail):
+
+./java/bin/java -cp .:cp:cp/javax.json-1.0.jar:java/lib/tools.jar traceprinter.InMemory < cp/traceprinter/test-input.txt
+
+The expected output is at cp/traceprinter/expected-output.txt
+
+(2) Try with safeexec (from java_jail):
+/path/to/safeexec --chroot_dir . --exec_dir / --nproc 50 --mem 3000000 --nfile 30 --env_vars CLASSPATH=/cp/:/cp/javax.json-1.0.jar:/java/lib/tools.jar --exec /java/bin/java traceprinter.InMemory < cp/traceprinter/test-input.txt
+
+Notes from different machines: on at least one machine, nfile and nproc needed to be set to 100.
+
+===
+
+I found these links useful at some point:
+http://www.cyberciti.biz/faq/howto-run-nginx-in-a-chroot-jail/
+http://interreality.org/~reed/java-chroot.html
diff --git a/v4-cokapi/backends/java/java_jail/cp/Makefile b/v4-cokapi/backends/java/java_jail/cp/Makefile
new file mode 100755
index 000000000..ba49e4b17
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/Makefile
@@ -0,0 +1,2 @@
+default:
+	find . -name "*.java" -print | xargs javac -Xlint:unchecked -cp .:javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar
diff --git a/v4-cokapi/backends/java/java_jail/cp/javax.json-1.0.jar b/v4-cokapi/backends/java/java_jail/cp/javax.json-1.0.jar
new file mode 100755
index 000000000..14d5c7211
Binary files /dev/null and b/v4-cokapi/backends/java/java_jail/cp/javax.json-1.0.jar differ
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryIn.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryIn.java
new file mode 100644
index 000000000..9b534168c
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryIn.java
@@ -0,0 +1,340 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac BinaryIn.java
+ *  Execution:    java BinaryIn input output
+ *  
+ *  This library is for reading binary data from an input stream.
+ *
+ *  % java BinaryIn http://introcs.cs.princeton.edu/cover.jpg output.jpg
+ *
+ *************************************************************************/
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.Socket;
+import java.net.URL;
+import java.net.URLConnection;
+
+
+/**
+ *  <i>Binary input</i>. This class provides methods for reading
+ *  in bits from a binary input stream, either
+ *  one bit at a time (as a <tt>boolean</tt>),
+ *  8 bits at a time (as a <tt>byte</tt> or <tt>char</tt>),
+ *  16 bits at a time (as a <tt>short</tt>),
+ *  32 bits at a time (as an <tt>int</tt> or <tt>float</tt>), or
+ *  64 bits at a time (as a <tt>double</tt> or <tt>long</tt>).
+ *  <p>
+ *  The binary input stream can be from standard input, a filename,
+ *  a URL name, a Socket, or an InputStream.
+ *  <p>
+ *  All primitive types are assumed to be represented using their 
+ *  standard Java representations, in big-endian (most significant
+ *  byte first) order.
+ *  <p>
+ *  The client should not intermix calls to <tt>BinaryIn</tt> with calls
+ *  to <tt>In</tt>; otherwise unexpected behavior will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryIn {
+    private static final int EOF = -1;   // end of file
+
+    private BufferedInputStream in;      // the input stream
+    private int buffer;                  // one character buffer
+    private int N;                       // number of bits left in buffer
+
+   /**
+     * Create a binary input stream from standard input.
+     */
+    public BinaryIn() {
+        in = new BufferedInputStream(System.in);
+        fillBuffer();
+    }
+
+   /**
+     * Create a binary input stream from an InputStream.
+     */
+    public BinaryIn(InputStream is) {
+        in = new BufferedInputStream(is);
+        fillBuffer();
+    }
+
+   /**
+     * Create a binary input stream from a socket.
+     */
+    public BinaryIn(Socket socket) {
+        try {
+            InputStream is = socket.getInputStream();
+            in = new BufferedInputStream(is);
+            fillBuffer();
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + socket);
+        }
+    }
+
+   /**
+     * Create a binary input stream from a URL.
+     */
+    public BinaryIn(URL url) {
+        try {
+            URLConnection site = url.openConnection();
+            InputStream is     = site.getInputStream();
+            in = new BufferedInputStream(is);
+            fillBuffer();
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + url);
+        }
+    }
+
+   /**
+     * Create a binary input stream from a filename or URL name.
+     */
+    public BinaryIn(String s) {
+
+        try {
+            // first try to read file from local file system
+            File file = new File(s);
+            if (file.exists()) {
+                FileInputStream fis = new FileInputStream(file);
+                in = new BufferedInputStream(fis);
+                fillBuffer();
+                return;
+            }
+
+            // next try for files included in jar
+            URL url = getClass().getResource(s);
+
+            // or URL from web
+            if (url == null) { url = new URL(s); }
+
+            URLConnection site = url.openConnection();
+            InputStream is     = site.getInputStream();
+            in = new BufferedInputStream(is);
+            fillBuffer();
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + s);
+        }
+    }
+
+    private void fillBuffer() {
+        try { buffer = in.read(); N = 8; }
+        catch (IOException e) { System.err.println("EOF"); buffer = EOF; N = -1; }
+    }
+
+   /**
+     * Does the binary input stream exist?
+     */
+    public boolean exists()  {
+        return in != null;
+    }
+
+   /**
+     * Returns true if the binary input stream is empty.
+     * @return true if and only if the binary input stream is empty
+     */
+    public boolean isEmpty() {
+        return buffer == EOF;
+    }
+
+   /**
+     * Read the next bit of data from the binary input stream and return as a boolean.
+     * @return the next bit of data from the binary input stream as a <tt>boolean</tt>
+     * @throws RuntimeException if the input stream is empty
+     */
+    public boolean readBoolean() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N--;
+        boolean bit = ((buffer >> N) & 1) == 1;
+        if (N == 0) fillBuffer();
+        return bit;
+    }
+
+   /**
+     * Read the next 8 bits from the binary input stream and return as an 8-bit char.
+     * @return the next 8 bits of data from the binary input stream as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available
+     */
+    public char readChar() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        // special case when aligned byte
+        if (N == 8) {
+            int x = buffer;
+            fillBuffer();
+            return (char) (x & 0xff);
+        }
+
+        // combine last N bits of current buffer with first 8-N bits of new buffer
+        int x = buffer;
+        x <<= (8-N);
+        int oldN = N;
+        fillBuffer();
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N = oldN;
+        x |= (buffer >>> N);
+        return (char) (x & 0xff);
+        // the above code doesn't quite work for the last character if N = 8
+        // because buffer will be -1
+    }
+
+
+   /**
+     * Read the next r bits from the binary input stream and return as an r-bit character.
+     * @param r number of bits to read.
+     * @return the next r bits of data from the binary input streamt as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than r bits available
+     */
+    public char readChar(int r) {
+        if (r < 1 || r > 16) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 8 case
+        if (r == 8) return readChar();
+
+        char x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+
+   /**
+     * Read the remaining bytes of data from the binary input stream and return as a string. 
+     * @return the remaining bytes of data from the binary input stream as a <tt>String</tt>
+     * @throws RuntimeException if the input stream is empty or if the number of bits
+     * available is not a multiple of 8 (byte-aligned)
+     */
+    public String readString() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        StringBuilder sb = new StringBuilder();
+        while (!isEmpty()) {
+            char c = readChar();
+            sb.append(c);
+        }
+        return sb.toString();
+    }
+
+
+   /**
+     * Read the next 16 bits from the binary input stream and return as a 16-bit short.
+     * @return the next 16 bits of data from the binary standard input as a <tt>short</tt>
+     * @throws RuntimeException if there are fewer than 16 bits available
+     */
+    public short readShort() {
+        short x = 0;
+        for (int i = 0; i < 2; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 32 bits from the binary input stream and return as a 32-bit int.
+     * @return the next 32 bits of data from the binary input stream as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available
+     */
+    public int readInt() {
+        int x = 0;
+        for (int i = 0; i < 4; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next r bits from the binary input stream return as an r-bit int.
+     * @param r number of bits to read.
+     * @return the next r bits of data from the binary input stream as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than r bits available on standard input
+     */
+    public int readInt(int r) {
+        if (r < 1 || r > 32) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 32 case
+        if (r == 32) return readInt();
+
+        int x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 64 bits from the binary input stream and return as a 64-bit long.
+     * @return the next 64 bits of data from the binary input stream as a <tt>long</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available
+     */
+    public long readLong() {
+        long x = 0;
+        for (int i = 0; i < 8; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 64 bits from the binary input stream and return as a 64-bit double.
+     * @return the next 64 bits of data from the binary input stream as a <tt>double</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available
+     */
+    public double readDouble() {
+        return Double.longBitsToDouble(readLong());
+    }
+
+   /**
+     * Read the next 32 bits from standard input and return as a 32-bit float.
+     * @return the next 32 bits of data from standard input as a <tt>float</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available on standard input
+     */
+    public float readFloat() {
+        return Float.intBitsToFloat(readInt());
+    }
+
+
+   /**
+     * Read the next 8 bits from the binary input stream and return as an 8-bit byte.
+     * @return the next 8 bits of data from the binary input stream as a <tt>byte</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available
+     */
+    public byte readByte() {
+        char c = readChar();
+        byte x = (byte) (c & 0xff);
+        return x;
+    }
+    
+   /**
+     * Test client. Reads in the name of a file or url (first command-line
+     * argument) and writes it to a file (second command-line argument).
+     */
+    public static void main(String[] args) {
+        BinaryIn  in  = new BinaryIn(args[0]);
+        BinaryOut out = new BinaryOut(args[1]);
+
+        // read one 8-bit char at a time
+        while (!in.isEmpty()) {
+            char c = in.readChar();
+            out.write(c);
+        }
+        out.flush();
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryOut.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryOut.java
new file mode 100644
index 000000000..c389c1031
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryOut.java
@@ -0,0 +1,305 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac BinaryOut.java
+ *  Execution:    java BinaryOut
+ *
+ *  Write binary data to an output stream, either one 1-bit boolean,
+ *  one 8-bit char, one 32-bit int, one 64-bit double, one 32-bit float,
+ *  or one 64-bit long at a time. The output stream can be standard
+ *  output, a file, an OutputStream or a Socket.
+ *
+ *  The bytes written are not aligned.
+ *
+ *  [wayne 7.17.2013] fixed bugs in write(char x, int r) and 
+ *  write(int x, int r) to add return statement for (r == 8)
+ *  and (r == 32) cases, respectively.
+ *
+ *************************************************************************/
+
+import java.io.BufferedOutputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.Socket;
+
+/**
+ *  <i>Binary output</i>. This class provides methods for converting
+ *  primtive type variables (<tt>boolean</tt>, <tt>byte</tt>, <tt>char</tt>,
+ *  <tt>int</tt>, <tt>long</tt>, <tt>float</tt>, and <tt>double</tt>)
+ *  to sequences of bits and writing them to an output stream.
+ *  The output stream can be standard output, a file, an OutputStream or a Socket.
+ *  Uses big-endian (most-significant byte first).
+ *  <p>
+ *  The client must <tt>flush()</tt> the output stream when finished writing bits.
+ *  <p>
+ *  The client should not intermixing calls to <tt>BinaryOut</tt> with calls
+ *  to <tt>Out</tt>; otherwise unexpected behavior will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryOut {
+
+    private BufferedOutputStream out;  // the output stream
+    private int buffer;                // 8-bit buffer of bits to write out
+    private int N;                     // number of bits remaining in buffer
+
+
+   /**
+     * Create a binary output stream from an OutputStream.
+     */
+    public BinaryOut(OutputStream os) {
+        out = new BufferedOutputStream(os);
+    }
+
+   /**
+     * Create a binary output stream from standard output.
+     */
+    public BinaryOut() {
+        out = new BufferedOutputStream(System.out);
+    }
+
+   /**
+     * Create a binary output stream from a filename.
+     */
+    public BinaryOut(String s) {
+        try {
+            OutputStream os = new FileOutputStream(s);
+            out = new BufferedOutputStream(os);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Create a binary output stream from a Socket.
+     */
+    public BinaryOut(Socket socket) {
+        try {
+            OutputStream os = socket.getOutputStream();
+            out = new BufferedOutputStream(os);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+
+   /**
+     * Write the specified bit to the binary output stream.
+     */
+    private void writeBit(boolean bit) {
+        // add bit to buffer
+        buffer <<= 1;
+        if (bit) buffer |= 1;
+
+        // if buffer is full (8 bits), write out as a single byte
+        N++;
+        if (N == 8) clearBuffer();
+    } 
+
+   /**
+     * Write the 8-bit byte to the binary output stream.
+     */
+    private void writeByte(int x) {
+        assert x >= 0 && x < 256;
+
+        // optimized if byte-aligned
+        if (N == 0) {
+            try { out.write(x); }
+            catch (IOException e) { e.printStackTrace(); }
+            return;
+        }
+
+        // otherwise write one bit at a time
+        for (int i = 0; i < 8; i++) {
+            boolean bit = ((x >>> (8 - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+    // write out any remaining bits in buffer to the binary output stream, padding with 0s
+    private void clearBuffer() {
+        if (N == 0) return;
+        if (N > 0) buffer <<= (8 - N);
+        try { out.write(buffer); }
+        catch (IOException e) { e.printStackTrace(); }
+        N = 0;
+        buffer = 0;
+    }
+
+   /**
+     * Flush the binary output stream, padding 0s if number of bits written so far
+     * is not a multiple of 8.
+     */
+    public void flush() {
+        clearBuffer();
+        try { out.flush(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Close and flush the binary output stream. Once it is closed, you can no longer write bits.
+     */
+    public void close() {
+        flush();
+        try { out.close(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+
+   /**
+     * Write the specified bit to the binary output stream.
+     * @param x the <tt>boolean</tt> to write.
+     */
+    public void write(boolean x) {
+        writeBit(x);
+    } 
+
+   /**
+     * Write the 8-bit byte to the binary output stream.
+     * @param x the <tt>byte</tt> to write.
+     */
+    public void write(byte x) {
+        writeByte(x & 0xff);
+    }
+
+   /**
+     * Write the 32-bit int to the binary output stream.
+     * @param x the <tt>int</tt> to write.
+     */
+    public void write(int x) {
+        writeByte((x >>> 24) & 0xff);
+        writeByte((x >>> 16) & 0xff);
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the r-bit int to the binary output stream.
+     * @param x the <tt>int</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 32.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public void write(int x, int r) {
+        if (r == 32) { write(x); return; }
+        if (r < 1 || r > 32)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+
+   /**
+     * Write the 64-bit double to the binary output stream.
+     * @param x the <tt>double</tt> to write.
+     */
+    public void write(double x) {
+        write(Double.doubleToRawLongBits(x));
+    }
+
+   /**
+     * Write the 64-bit long to the binary output stream.
+     * @param x the <tt>long</tt> to write.
+     */
+    public void write(long x) {
+        writeByte((int) ((x >>> 56) & 0xff));
+        writeByte((int) ((x >>> 48) & 0xff));
+        writeByte((int) ((x >>> 40) & 0xff));
+        writeByte((int) ((x >>> 32) & 0xff));
+        writeByte((int) ((x >>> 24) & 0xff));
+        writeByte((int) ((x >>> 16) & 0xff));
+        writeByte((int) ((x >>>  8) & 0xff));
+        writeByte((int) ((x >>>  0) & 0xff));
+    }
+
+   /**
+     * Write the 32-bit float to the binary output stream.
+     * @param x the <tt>float</tt> to write.
+     */
+    public void write(float x) {
+        write(Float.floatToRawIntBits(x));
+    }
+
+   /**
+     * Write the 16-bit int to the binary output stream.
+     * @param x the <tt>short</tt> to write.
+     */
+    public void write(short x) {
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the 8-bit char to the binary output stream.
+     * @param x the <tt>char</tt> to write.
+     * @throws RuntimeException if <tt>x</tt> is not betwen 0 and 255.
+     */
+    public void write(char x) {
+        if (x < 0 || x >= 256) throw new RuntimeException("Illegal 8-bit char = " + x);
+        writeByte(x);
+    }
+
+   /**
+     * Write the r-bit char to the binary output stream.
+     * @param x the <tt>char</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 16.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public void write(char x, int r) {
+        if (r == 8) { write(x); return; }
+        if (r < 1 || r > 16)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+   /**
+     * Write the string of 8-bit characters to the binary output stream.
+     * @param s the <tt>String</tt> to write.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 255.
+     */
+    public void write(String s) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i));
+    }
+
+
+   /**
+     * Write the String of r-bit characters to the binary output stream.
+     * @param s the <tt>String</tt> to write.
+     * @param r the number of relevants bits in each character.
+     * @throws RuntimeException if r is not between 1 and 16.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 2<sup>r</sup> - 1.
+     */
+    public void write(String s, int r) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i), r);
+    }
+
+
+   /**
+     * Test client. Read bits from standard input and write to the file
+     * specified on command line.
+     */
+    public static void main(String[] args) {
+
+        // create binary output stream to write to file
+        String filename = args[0];
+        BinaryOut out = new BinaryOut(filename);
+        BinaryIn  in  = new BinaryIn();
+
+        // read from standard input and write to file
+        while (!in.isEmpty()) {
+            char c = in.readChar();
+            out.write(c);
+        }
+        out.flush();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryStdIn.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryStdIn.java
new file mode 100644
index 000000000..3fe665cce
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryStdIn.java
@@ -0,0 +1,268 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac BinaryStdIn.java
+ *  Execution:    java BinaryStdIn < input > output
+ *  
+ *  Supports reading binary data from standard input.
+ *
+ *  % java BinaryStdIn < input.jpg > output.jpg
+ *  % diff input.jpg output.jpg
+ *
+ *************************************************************************/
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+
+/**
+ *  <i>Binary standard input</i>. This class provides methods for reading
+ *  in bits from standard input, either one bit at a time (as a <tt>boolean</tt>),
+ *  8 bits at a time (as a <tt>byte</tt> or <tt>char</tt>),
+ *  16 bits at a time (as a <tt>short</tt>), 32 bits at a time
+ *  (as an <tt>int</tt> or <tt>float</tt>), or 64 bits at a time (as a
+ *  <tt>double</tt> or <tt>long</tt>).
+ *  <p>
+ *  All primitive types are assumed to be represented using their 
+ *  standard Java representations, in big-endian (most significant
+ *  byte first) order.
+ *  <p>
+ *  The client should not intermix calls to <tt>BinaryStdIn</tt> with calls
+ *  to <tt>StdIn</tt> or <tt>System.in</tt>;
+ *  otherwise unexpected behavior will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryStdIn {
+    private static BufferedInputStream in = new BufferedInputStream(System.in);
+    private static final int EOF = -1;    // end of file
+
+    private static int buffer;            // one character buffer
+    private static int N;                 // number of bits left in buffer
+
+    // static initializer
+    static { fillBuffer(); }
+
+    // don't instantiate
+    private BinaryStdIn() { }
+
+    private static void fillBuffer() {
+        try { buffer = in.read(); N = 8; }
+        catch (IOException e) { System.out.println("EOF"); buffer = EOF; N = -1; }
+    }
+
+   /**
+     * Close this input stream and release any associated system resources.
+     */
+    public static void close() {
+        try {
+            in.close();
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException("Could not close BinaryStdIn");
+        }
+    }
+
+   /**
+     * Returns true if standard input is empty.
+     * @return true if and only if standard input is empty
+     */
+    public static boolean isEmpty() {
+        return buffer == EOF;
+    }
+
+   /**
+     * Read the next bit of data from standard input and return as a boolean.
+     * @return the next bit of data from standard input as a <tt>boolean</tt>
+     * @throws RuntimeException if standard input is empty
+     */
+    public static boolean readBoolean() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N--;
+        boolean bit = ((buffer >> N) & 1) == 1;
+        if (N == 0) fillBuffer();
+        return bit;
+    }
+
+   /**
+     * Read the next 8 bits from standard input and return as an 8-bit char.
+     * Note that <tt>char</tt> is a 16-bit type;
+     * to read the next 16 bits as a char, use <tt>readChar(16)</tt>
+     * @return the next 8 bits of data from standard input as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available on standard input
+     */
+    public static char readChar() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        // special case when aligned byte
+        if (N == 8) {
+            int x = buffer;
+            fillBuffer();
+            return (char) (x & 0xff);
+        }
+
+        // combine last N bits of current buffer with first 8-N bits of new buffer
+        int x = buffer;
+        x <<= (8-N);
+        int oldN = N;
+        fillBuffer();
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N = oldN;
+        x |= (buffer >>> N);
+        return (char) (x & 0xff);
+        // the above code doesn't quite work for the last character if N = 8
+        // because buffer will be -1
+    }
+
+   /**
+     * Read the next r bits from standard input and return as an r-bit character.
+     * @param r number of bits to read.
+     * @return the next r bits of data from standard input as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than r bits available on standard input
+     * @throws RuntimeException unless 1 &le; r &le; 16
+     */
+    public static char readChar(int r) {
+        if (r < 1 || r > 16) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 8 case
+        if (r == 8) return readChar();
+
+        char x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+   /**
+     * Read the remaining bytes of data from standard input and return as a string. 
+     * @return the remaining bytes of data from standard input as a <tt>String</tt>
+     * @throws RuntimeException if standard input is empty or if the number of bits
+     * available on standard input is not a multiple of 8 (byte-aligned)
+     */
+    public static String readString() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        StringBuilder sb = new StringBuilder();
+        while (!isEmpty()) {
+            char c = readChar();
+            sb.append(c);
+        }
+        return sb.toString();
+    }
+
+
+   /**
+     * Read the next 16 bits from standard input and return as a 16-bit short.
+     * @return the next 16 bits of data from standard input as a <tt>short</tt>
+     * @throws RuntimeException if there are fewer than 16 bits available on standard input
+     */
+    public static short readShort() {
+        short x = 0;
+        for (int i = 0; i < 2; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 32 bits from standard input and return as a 32-bit int.
+     * @return the next 32 bits of data from standard input as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available on standard input
+     */
+    public static int readInt() {
+        int x = 0;
+        for (int i = 0; i < 4; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next r bits from standard input and return as an r-bit int.
+     * @param r number of bits to read.
+     * @return the next r bits of data from standard input as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than r bits available on standard input
+     * @throws RuntimeException unless 1 &le; r &le; 32
+     */
+    public static int readInt(int r) {
+        if (r < 1 || r > 32) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 32 case
+        if (r == 32) return readInt();
+
+        int x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 64 bits from standard input and return as a 64-bit long.
+     * @return the next 64 bits of data from standard input as a <tt>long</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available on standard input
+     */
+    public static long readLong() {
+        long x = 0;
+        for (int i = 0; i < 8; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+
+   /**
+     * Read the next 64 bits from standard input and return as a 64-bit double.
+     * @return the next 64 bits of data from standard input as a <tt>double</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available on standard input
+     */
+    public static double readDouble() {
+        return Double.longBitsToDouble(readLong());
+    }
+
+   /**
+     * Read the next 32 bits from standard input and return as a 32-bit float.
+     * @return the next 32 bits of data from standard input as a <tt>float</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available on standard input
+     */
+    public static float readFloat() {
+        return Float.intBitsToFloat(readInt());
+    }
+
+
+   /**
+     * Read the next 8 bits from standard input and return as an 8-bit byte.
+     * @return the next 8 bits of data from standard input as a <tt>byte</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available on standard input
+     */
+    public static byte readByte() {
+        char c = readChar();
+        byte x = (byte) (c & 0xff);
+        return x;
+    }
+    
+   /**
+     * Test client. Reads in a binary input file from standard input and writes
+     * it to standard output.
+     */
+    public static void main(String[] args) {
+
+        // read one 8-bit char at a time
+        while (!BinaryStdIn.isEmpty()) {
+            char c = BinaryStdIn.readChar();
+            BinaryStdOut.write(c);
+        }
+        BinaryStdOut.flush();
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryStdOut.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryStdOut.java
new file mode 100644
index 000000000..b7f6daa41
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/BinaryStdOut.java
@@ -0,0 +1,257 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac BinaryStdOut.java
+ *  Execution:    java BinaryStdOut
+ *
+ *  Write binary data to standard output, either one 1-bit boolean,
+ *  one 8-bit char, one 32-bit int, one 64-bit double, one 32-bit float,
+ *  or one 64-bit long at a time.
+ *
+ *  The bytes written are not aligned.
+ *
+ *************************************************************************/
+
+import java.io.BufferedOutputStream;
+import java.io.IOException;
+
+/**
+ *  <i>Binary standard output</i>. This class provides methods for converting
+ *  primtive type variables (<tt>boolean</tt>, <tt>byte</tt>, <tt>char</tt>,
+ *  <tt>int</tt>, <tt>long</tt>, <tt>float</tt>, and <tt>double</tt>)
+ *  to sequences of bits and writing them to standard output.
+ *  Uses big-endian (most-significant byte first).
+ *  <p>
+ *  The client must <tt>flush()</tt> the output stream when finished writing bits.
+ *  <p>
+ *  The client should not intermixing calls to <tt>BinaryStdOut</tt> with calls
+ *  to <tt>StdOut</tt> or <tt>System.out</tt>; otherwise unexpected behavior 
+ *  will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryStdOut {
+    private static BufferedOutputStream out = new BufferedOutputStream(System.out);
+
+    private static int buffer;     // 8-bit buffer of bits to write out
+    private static int N;          // number of bits remaining in buffer
+
+    // don't instantiate
+    private BinaryStdOut() { }
+
+   /**
+     * Write the specified bit to standard output.
+     */
+    private static void writeBit(boolean bit) {
+        // add bit to buffer
+        buffer <<= 1;
+        if (bit) buffer |= 1;
+
+        // if buffer is full (8 bits), write out as a single byte
+        N++;
+        if (N == 8) clearBuffer();
+    } 
+
+   /**
+     * Write the 8-bit byte to standard output.
+     */
+    private static void writeByte(int x) {
+        assert x >= 0 && x < 256;
+
+        // optimized if byte-aligned
+        if (N == 0) {
+            try { out.write(x); }
+            catch (IOException e) { e.printStackTrace(); }
+            return;
+        }
+
+        // otherwise write one bit at a time
+        for (int i = 0; i < 8; i++) {
+            boolean bit = ((x >>> (8 - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+    // write out any remaining bits in buffer to standard output, padding with 0s
+    private static void clearBuffer() {
+        if (N == 0) return;
+        if (N > 0) buffer <<= (8 - N);
+        try { out.write(buffer); }
+        catch (IOException e) { e.printStackTrace(); }
+        N = 0;
+        buffer = 0;
+    }
+
+   /**
+     * Flush standard output, padding 0s if number of bits written so far
+     * is not a multiple of 8.
+     */
+    public static void flush() {
+        clearBuffer();
+        try { out.flush(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Flush and close standard output. Once standard output is closed, you can no
+     * longer write bits to it.
+     */
+    public static void close() {
+        flush();
+        try { out.close(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+
+   /**
+     * Write the specified bit to standard output.
+     * @param x the <tt>boolean</tt> to write.
+     */
+    public static void write(boolean x) {
+        writeBit(x);
+    } 
+
+   /**
+     * Write the 8-bit byte to standard output.
+     * @param x the <tt>byte</tt> to write.
+     */
+    public static void write(byte x) {
+        writeByte(x & 0xff);
+    }
+
+   /**
+     * Write the 32-bit int to standard output.
+     * @param x the <tt>int</tt> to write.
+     */
+    public static void write(int x) {
+        writeByte((x >>> 24) & 0xff);
+        writeByte((x >>> 16) & 0xff);
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the r-bit int to standard output.
+     * @param x the <tt>int</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 32.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public static void write(int x, int r) {
+        if (r == 32) { write(x); return; }
+        if (r < 1 || r > 32)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+
+
+
+
+   /**
+     * Write the 64-bit double to standard output.
+     * @param x the <tt>double</tt> to write.
+     */
+    public static void write(double x) {
+        write(Double.doubleToRawLongBits(x));
+    }
+
+   /**
+     * Write the 64-bit long to standard output.
+     * @param x the <tt>long</tt> to write.
+     */
+    public static void write(long x) {
+        writeByte((int) ((x >>> 56) & 0xff));
+        writeByte((int) ((x >>> 48) & 0xff));
+        writeByte((int) ((x >>> 40) & 0xff));
+        writeByte((int) ((x >>> 32) & 0xff));
+        writeByte((int) ((x >>> 24) & 0xff));
+        writeByte((int) ((x >>> 16) & 0xff));
+        writeByte((int) ((x >>>  8) & 0xff));
+        writeByte((int) ((x >>>  0) & 0xff));
+    }
+
+   /**
+     * Write the 32-bit float to standard output.
+     * @param x the <tt>float</tt> to write.
+     */
+    public static void write(float x) {
+        write(Float.floatToRawIntBits(x));
+    }
+
+   /**
+     * Write the 16-bit int to standard output.
+     * @param x the <tt>short</tt> to write.
+     */
+    public static void write(short x) {
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the 8-bit char to standard output.
+     * @param x the <tt>char</tt> to write.
+     * @throws RuntimeException if <tt>x</tt> is not betwen 0 and 255.
+     */
+    public static void write(char x) {
+        if (x < 0 || x >= 256) throw new RuntimeException("Illegal 8-bit char = " + x);
+        writeByte(x);
+    }
+
+   /**
+     * Write the r-bit char to standard output.
+     * @param x the <tt>char</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 16.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public static void write(char x, int r) {
+        if (r == 8) { write(x); return; }
+        if (r < 1 || r > 16)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+   /**
+     * Write the string of 8-bit characters to standard output.
+     * @param s the <tt>String</tt> to write.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 255.
+     */
+    public static void write(String s) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i));
+    }
+
+   /**
+     * Write the String of r-bit characters to standard output.
+     * @param s the <tt>String</tt> to write.
+     * @param r the number of relevants bits in each character.
+     * @throws RuntimeException if r is not between 1 and 16.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 2<sup>r</sup> - 1.
+     */
+    public static void write(String s, int r) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i), r);
+    }
+
+   /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+        int T = Integer.parseInt(args[0]);
+        // write to standard output
+        for (int i = 0; i < T; i++) {
+            BinaryStdOut.write(i);
+        }
+        BinaryStdOut.flush();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Charge.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Charge.java
new file mode 100644
index 000000000..3e8b988b0
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Charge.java
@@ -0,0 +1,35 @@
+package stdlibpack;
+
+public class Charge {
+    private double rx, ry;   // position
+    private double q;        // charge
+
+    public Charge(double x0, double y0, double q0) {
+        rx = x0;
+        ry = y0;
+        q  = q0;
+    }
+
+    public double potentialAt(double x, double y) {
+        double k = 8.99e09;
+        double dx = x - rx;
+        double dy = y - ry;
+        return k * q / Math.sqrt(dx*dx + dy*dy);
+    }
+
+    public String toString() {
+        return q + " at " + "(" + rx + ", " + ry + ")";
+    }
+
+    public static void main(String[] args) {
+        double x = Double.parseDouble(args[0]);
+        double y = Double.parseDouble(args[1]);
+        Charge c1 = new Charge(.51, .63, 21.3);
+        Charge c2 = new Charge(.13, .94, 81.9);
+        System.out.println(c1);
+        System.out.println(c2);
+        double v1 = c1.potentialAt(x, y);
+        double v2 = c2.potentialAt(x, y);
+        StdOut.println(v1+v2);
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Draw.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Draw.java
new file mode 100644
index 000000000..ad2b959ec
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Draw.java
@@ -0,0 +1,1142 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac Draw.java
+ *  Execution:    java Draw
+ *
+ *  Drawing library. This class provides a basic capability for creating
+ *  drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *  This is the object-oriented version of standard draw; it supports
+ *  multiple indepedent drawing windows.
+ *
+ *  Todo
+ *  ----
+ *    -  Add support for gradient fill, etc.
+ *
+ *  Remarks
+ *  -------
+ *    -  don't use AffineTransform for rescaling since it inverts
+ *       images and strings
+ *    -  careful using setFont in inner loop within an animation -
+ *       it can cause flicker
+ *
+ *************************************************************************/
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import java.io.*;
+import java.net.*;
+import java.util.LinkedList;
+import java.util.TreeSet;
+import javax.imageio.ImageIO;
+import javax.swing.*;
+
+/**
+ *  <i>Draw</i>. This class provides a basic capability for
+ *  creating drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *  This is the object-oriented version of standard draw; it supports
+ *  multiple indepedent drawing windows.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+
+import java.util.ArrayList;
+
+public final class Draw implements ActionListener, MouseListener, MouseMotionListener, KeyListener {
+
+    // pre-defined colors
+    public static final Color BLACK      = Color.BLACK;
+    public static final Color BLUE       = Color.BLUE;
+    public static final Color CYAN       = Color.CYAN;
+    public static final Color DARK_GRAY  = Color.DARK_GRAY;
+    public static final Color GRAY       = Color.GRAY;
+    public static final Color GREEN      = Color.GREEN;
+    public static final Color LIGHT_GRAY = Color.LIGHT_GRAY;
+    public static final Color MAGENTA    = Color.MAGENTA;
+    public static final Color ORANGE     = Color.ORANGE;
+    public static final Color PINK       = Color.PINK;
+    public static final Color RED        = Color.RED;
+    public static final Color WHITE      = Color.WHITE;
+    public static final Color YELLOW     = Color.YELLOW;
+
+    /**
+     * Shade of blue used in Introduction to Programming in Java.
+     * The RGB values are (9, 90, 166).
+     */
+    public static final Color BOOK_BLUE = new Color(9, 90, 166);
+    
+    /**
+     * Shade of red used in Algorithms 4th edition.
+     * The RGB values are (173, 32, 24).
+     */
+    public static final Color BOOK_RED = new Color(173, 32, 24);
+
+    // default colors
+    private static final Color DEFAULT_PEN_COLOR   = BLACK;
+    private static final Color DEFAULT_CLEAR_COLOR = WHITE;
+
+    // boundary of drawing canvas, 5% border
+    private static final double BORDER = 0.05;
+    private static final double DEFAULT_XMIN = 0.0;
+    private static final double DEFAULT_XMAX = 1.0;
+    private static final double DEFAULT_YMIN = 0.0;
+    private static final double DEFAULT_YMAX = 1.0;
+
+    // default canvas size is SIZE-by-SIZE
+    private static final int DEFAULT_SIZE = 512;
+
+    // default pen radius
+    private static final double DEFAULT_PEN_RADIUS = 0.002;
+
+    // default font
+    private static final Font DEFAULT_FONT = new Font("SansSerif", Font.PLAIN, 16);
+
+    // current pen color
+    private Color penColor;
+
+    // canvas size
+    private int width  = DEFAULT_SIZE;
+    private int height = DEFAULT_SIZE;
+
+    // current pen radius
+    private double penRadius;
+
+    // show we draw immediately or wait until next show?
+    private boolean defer = false;
+
+    private double xmin, ymin, xmax, ymax;
+
+    // name of window
+    private String name = "Draw";
+
+    // for synchronization
+    private Object mouseLock = new Object();
+    private Object keyLock = new Object();
+
+    // current font
+    private Font font;
+
+    // double buffered graphics
+    private BufferedImage offscreenImage, onscreenImage;
+    private Graphics2D offscreen, onscreen;
+
+    // the frame for drawing to the screen
+    private JFrame frame = new JFrame();
+
+    // mouse state
+    private boolean mousePressed = false;
+    private double mouseX = 0;
+    private double mouseY = 0;
+
+    // keyboard state
+    private LinkedList<Character> keysTyped = new LinkedList<Character>();
+    private TreeSet<Integer> keysDown = new TreeSet<Integer>();
+
+    // event-based listeners
+    private ArrayList<DrawListener> listeners = new ArrayList<DrawListener>();
+
+
+    /**
+     * Create an empty drawing object with the given name.
+     *
+     * @param name the title of the drawing window.
+     */
+    public Draw(String name) {
+        this.name = name;
+        init();
+    }
+
+    /**
+     * Create an empty drawing object.
+     */
+    public Draw() {
+        init();
+    }
+
+    private void init() {
+        if (frame != null) frame.setVisible(false);
+        frame = new JFrame();
+        offscreenImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        onscreenImage  = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        offscreen = offscreenImage.createGraphics();
+        onscreen  = onscreenImage.createGraphics();
+        setXscale();
+        setYscale();
+        offscreen.setColor(DEFAULT_CLEAR_COLOR);
+        offscreen.fillRect(0, 0, width, height);
+        setPenColor();
+        setPenRadius();
+        setFont();
+        clear();
+
+        // add antialiasing
+        RenderingHints hints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
+                                                  RenderingHints.VALUE_ANTIALIAS_ON);
+        hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+        offscreen.addRenderingHints(hints);
+
+        // frame stuff
+        ImageIcon icon = new ImageIcon(onscreenImage);
+        JLabel draw = new JLabel(icon);
+
+        draw.addMouseListener(this);
+        draw.addMouseMotionListener(this);
+
+        frame.setContentPane(draw);
+        frame.addKeyListener(this);    // JLabel cannot get keyboard focus
+        frame.setResizable(false);
+        // frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            // closes all windows
+        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);      // closes only current window
+        frame.setTitle(name);
+        frame.setJMenuBar(createMenuBar());
+        frame.pack();
+        frame.requestFocusInWindow();
+        frame.setVisible(true);
+    }
+
+
+    /**
+     * Set the upper-left hand corner of the drawing window to be (x, y), where (0, 0) is upper left.
+     *
+     * @param x the number of pixels from the left
+     * @param y the number of pixels from the top
+     * @throws a RunTimeException if the width or height is 0 or negative
+     */
+    public void setLocationOnScreen(int x, int y) {
+        frame.setLocation(x, y);
+    }
+
+
+
+    /**
+     * Set the window size to w-by-h pixels.
+     *
+     * @param w the width as a number of pixels
+     * @param h the height as a number of pixels
+     * @throws a RunTimeException if the width or height is 0 or negative
+     */
+    public void setCanvasSize(int w, int h) {
+        if (w < 1 || h < 1) throw new RuntimeException("width and height must be positive");
+        width = w;
+        height = h;
+        init();
+    }
+
+
+    // create the menu bar (changed to private)
+    private JMenuBar createMenuBar() {
+        JMenuBar menuBar = new JMenuBar();
+        JMenu menu = new JMenu("File");
+        menuBar.add(menu);
+        JMenuItem menuItem1 = new JMenuItem(" Save...   ");
+        menuItem1.addActionListener(this);
+        menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+        menu.add(menuItem1);
+        return menuBar;
+    }
+
+
+   /*************************************************************************
+    *  User and screen coordinate systems
+    *************************************************************************/
+
+    /**
+     * Set the x-scale to be the default (between 0.0 and 1.0).
+     */
+    public void setXscale() { setXscale(DEFAULT_XMIN, DEFAULT_XMAX); }
+
+    /**
+     * Set the y-scale to be the default (between 0.0 and 1.0).
+     */
+    public void setYscale() { setYscale(DEFAULT_YMIN, DEFAULT_YMAX); }
+
+    /**
+     * Set the x-scale (a 10% border is added to the values)
+     * @param min the minimum value of the x-scale
+     * @param max the maximum value of the x-scale
+     */
+    public void setXscale(double min, double max) {
+        double size = max - min;
+        xmin = min - BORDER * size;
+        xmax = max + BORDER * size;
+    }
+
+    /**
+     * Set the y-scale (a 10% border is added to the values).
+     * @param min the minimum value of the y-scale
+     * @param max the maximum value of the y-scale
+     */
+    public void setYscale(double min, double max) {
+        double size = max - min;
+        ymin = min - BORDER * size;
+        ymax = max + BORDER * size;
+    }
+
+    // helper functions that scale from user coordinates to screen coordinates and back
+    private double  scaleX(double x) { return width  * (x - xmin) / (xmax - xmin); }
+    private double  scaleY(double y) { return height * (ymax - y) / (ymax - ymin); }
+    private double factorX(double w) { return w * width  / Math.abs(xmax - xmin);  }
+    private double factorY(double h) { return h * height / Math.abs(ymax - ymin);  }
+    private double   userX(double x) { return xmin + x * (xmax - xmin) / width;    }
+    private double   userY(double y) { return ymax - y * (ymax - ymin) / height;   }
+
+
+    /**
+     * Clear the screen to the default color (white).
+     */
+    public void clear() { clear(DEFAULT_CLEAR_COLOR); }
+    /**
+     * Clear the screen to the given color.
+     * @param color the Color to make the background
+     */
+    public void clear(Color color) {
+        offscreen.setColor(color);
+        offscreen.fillRect(0, 0, width, height);
+        offscreen.setColor(penColor);
+        draw();
+    }
+
+    /**
+     * Get the current pen radius.
+     */
+    public double getPenRadius() { return penRadius; }
+
+    /**
+     * Set the pen size to the default (.002).
+     */
+    public void setPenRadius() { setPenRadius(DEFAULT_PEN_RADIUS); }
+
+    /**
+     * Set the radius of the pen to the given size.
+     * @param r the radius of the pen
+     * @throws RuntimeException if r is negative
+     */
+    public void setPenRadius(double r) {
+        if (r < 0) throw new RuntimeException("pen radius must be positive");
+        penRadius = r * DEFAULT_SIZE;
+        BasicStroke stroke = new BasicStroke((float) penRadius, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
+        // BasicStroke stroke = new BasicStroke((float) penRadius);
+        offscreen.setStroke(stroke);
+    }
+
+    /**
+     * Get the current pen color.
+     */
+    public Color getPenColor() { return penColor; }
+
+    /**
+     * Set the pen color to the default color (black).
+     */
+    public void setPenColor() { setPenColor(DEFAULT_PEN_COLOR); }
+
+    /**
+     * Set the pen color to the given color.
+     * @param color the Color to make the pen
+     */
+    public void setPenColor(Color color) {
+        penColor = color;
+        offscreen.setColor(penColor);
+    }
+
+    /**
+     * Set the pen color to the given RGB color.
+     * @param red the amount of red (between 0 and 255)
+     * @param green the amount of green (between 0 and 255)
+     * @param blue the amount of blue (between 0 and 255)
+     * @throws IllegalArgumentException if the amount of red, green, or blue are outside prescribed range
+     */
+    public void setPenColor(int red, int green, int blue) {
+        if (red   < 0 || red   >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (green < 0 || green >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (blue  < 0 || blue  >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        setPenColor(new Color(red, green, blue));
+    }
+
+
+    public void xorOn()   { offscreen.setXORMode(DEFAULT_CLEAR_COLOR); }
+    public void xorOff()  { offscreen.setPaintMode();         }
+
+    /**
+     * Get the current font.
+     */
+    public Font getFont() { return font; }
+
+    /**
+     * Set the font to the default font (sans serif, 16 point).
+     */
+    public void setFont() { setFont(DEFAULT_FONT); }
+
+    /**
+     * Set the font to the given value.
+     * @param f the font to make text
+     */
+    public void setFont(Font f) { font = f; }
+
+
+   /*************************************************************************
+    *  Drawing geometric shapes.
+    *************************************************************************/
+
+    /**
+     * Draw a line from (x0, y0) to (x1, y1).
+     * @param x0 the x-coordinate of the starting point
+     * @param y0 the y-coordinate of the starting point
+     * @param x1 the x-coordinate of the destination point
+     * @param y1 the y-coordinate of the destination point
+     */
+    public void line(double x0, double y0, double x1, double y1) {
+        offscreen.draw(new Line2D.Double(scaleX(x0), scaleY(y0), scaleX(x1), scaleY(y1)));
+        draw();
+    }
+
+    /**
+     * Draw one pixel at (x, y).
+     * @param x the x-coordinate of the pixel
+     * @param y the y-coordinate of the pixel
+     */
+    private void pixel(double x, double y) {
+        offscreen.fillRect((int) Math.round(scaleX(x)), (int) Math.round(scaleY(y)), 1, 1);
+    }
+
+    /**
+     * Draw a point at (x, y).
+     * @param x the x-coordinate of the point
+     * @param y the y-coordinate of the point
+     */
+    public void point(double x, double y) {
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double r = penRadius;
+        // double ws = factorX(2*r);
+        // double hs = factorY(2*r);
+        // if (ws <= 1 && hs <= 1) pixel(x, y);
+        if (r <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - r/2, ys - r/2, r, r));
+        draw();
+    }
+
+    /**
+     * Draw a circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws RuntimeException if the radius of the circle is negative
+     */
+    public void circle(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("circle radius can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw filled circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws RuntimeException if the radius of the circle is negative
+     */
+    public void filledCircle(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("circle radius can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws RuntimeException if either of the axes are negative
+     */
+    public void ellipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (semiMajorAxis < 0) throw new RuntimeException("ellipse semimajor axis can't be negative");
+        if (semiMinorAxis < 0) throw new RuntimeException("ellipse semiminor axis can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws RuntimeException if either of the axes are negative
+     */
+    public void filledEllipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (semiMajorAxis < 0) throw new RuntimeException("ellipse semimajor axis can't be negative");
+        if (semiMinorAxis < 0) throw new RuntimeException("ellipse semiminor axis can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw an arc of radius r, centered on (x, y), from angle1 to angle2 (in degrees).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @param angle1 the starting angle. 0 would mean an arc beginning at 3 o'clock.
+     * @param angle2 the angle at the end of the arc. For example, if
+     *        you want a 90 degree arc, then angle2 should be angle1 + 90.
+     * @throws RuntimeException if the radius of the circle is negative
+     */
+    public void arc(double x, double y, double r, double angle1, double angle2) {
+        if (r < 0) throw new RuntimeException("arc radius can't be negative");
+        while (angle2 < angle1) angle2 += 360;
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Arc2D.Double(xs - ws/2, ys - hs/2, ws, hs, angle1, angle2 - angle1, Arc2D.OPEN));
+        draw();
+    }
+
+    /**
+     * Draw a square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws RuntimeException if r is negative
+     */
+    public void square(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("square side length can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws RuntimeException if r is negative
+     */
+    public void filledSquare(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("square side length can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw a rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws RuntimeException if halfWidth or halfHeight is negative
+     */
+    public void rectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (halfWidth  < 0) throw new RuntimeException("half width can't be negative");
+        if (halfHeight < 0) throw new RuntimeException("half height can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws RuntimeException if halfWidth or halfHeight is negative
+     */
+    public void filledRectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (halfWidth  < 0) throw new RuntimeException("half width can't be negative");
+        if (halfHeight < 0) throw new RuntimeException("half height can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public void polygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.draw(path);
+        draw();
+    }
+
+    /**
+     * Draw a filled polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public void filledPolygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.fill(path);
+        draw();
+    }
+
+
+
+   /*************************************************************************
+    *  Drawing images.
+    *************************************************************************/
+
+    // get an image from the given filename
+    private Image getImage(String filename) {
+
+        // to read from file
+        ImageIcon icon = new ImageIcon(filename);
+
+        // try to read from URL
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            try {
+                URL url = new URL(filename);
+                icon = new ImageIcon(url);
+            } catch (Exception e) { /* not a url */ }
+        }
+
+        // in case file is inside a .jar
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            URL url = Draw.class.getResource(filename);
+            if (url == null) throw new RuntimeException("image " + filename + " not found");
+            icon = new ImageIcon(url);
+        }
+
+        return icon.getImage();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y).
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y),
+     * rotated given number of degrees
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s, double degrees) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rescaled to w-by-h.
+     * @param x the center x coordinate of the image
+     * @param y the center y coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s, double w, double h) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else {
+            offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                       (int) Math.round(ys - hs/2.0),
+                                       (int) Math.round(ws),
+                                       (int) Math.round(hs), null);
+        }
+        draw();
+    }
+
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rotated
+     * given number of degrees, rescaled to w-by-h.
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s, double w, double h, double degrees) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                   (int) Math.round(ys - hs/2.0),
+                                   (int) Math.round(ws),
+                                   (int) Math.round(hs), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+
+   /*************************************************************************
+    *  Drawing text.
+    *************************************************************************/
+
+    /**
+     * Write the given text string in the current font, centered on (x, y).
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     */
+    public void text(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs - ws/2.0), (float) (ys + hs));
+        draw();
+    }
+
+    /**
+     * Write the given text string in the current font, centered on (x, y) and
+     * rotated by the specified number of degrees
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     * @param degrees is the number of degrees to rotate counterclockwise
+     */
+    public void text(double x, double y, String s, double degrees) {
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        text(x, y, s);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+    }
+
+    /**
+     * Write the given text string in the current font, left-aligned at (x, y).
+     * @param x the x-coordinate of the text
+     * @param y the y-coordinate of the text
+     * @param s the text
+     */
+    public void textLeft(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        // int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs), (float) (ys + hs));
+        show();
+    }
+
+
+    /**
+     * Display on screen, pause for t milliseconds, and turn on
+     * <em>animation mode</em>: subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will not be displayed on screen until the next call to <tt>show()</tt>.
+     * This is useful for producing animations (clear the screen, draw a bunch of shapes,
+     * display on screen for a fixed amount of time, and repeat). It also speeds up
+     * drawing a huge number of shapes (call <tt>show(0)</tt> to defer drawing
+     * on screen, draw the shapes, and call <tt>show(0)</tt> to display them all
+     * on screen at once).
+     * @param t number of milliseconds
+     */
+    public void show(int t) {
+        defer = false;
+        draw();
+        try { Thread.sleep(t); }
+        catch (InterruptedException e) { System.out.println("Error sleeping"); }
+        defer = true;
+    }
+
+
+    /**
+     * Display on-screen and turn off animation mode:
+     * subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will be displayed on screen when called. This is the default.
+     */
+    public void show() {
+        defer = false;
+        draw();
+    }
+
+    // draw onscreen if defer is false
+    private void draw() {
+        if (defer) return;
+        onscreen.drawImage(offscreenImage, 0, 0, null);
+        frame.repaint();
+    }
+
+
+   /*************************************************************************
+    *  Save drawing to a file.
+    *************************************************************************/
+
+    /**
+     * Save to file - suffix must be png, jpg, or gif.
+     * @param filename the name of the file with one of the required suffixes
+     */
+    public void save(String filename) {
+        File file = new File(filename);
+        String suffix = filename.substring(filename.lastIndexOf('.') + 1);
+
+        // png files
+        if (suffix.toLowerCase().equals("png")) {
+            try { ImageIO.write(offscreenImage, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        // need to change from ARGB to RGB for jpeg
+        // reference: http://archives.java.sun.com/cgi-bin/wa?A2=ind0404&L=java2d-interest&D=0&P=2727
+        else if (suffix.toLowerCase().equals("jpg")) {
+            WritableRaster raster = offscreenImage.getRaster();
+            WritableRaster newRaster;
+            newRaster = raster.createWritableChild(0, 0, width, height, 0, 0, new int[] {0, 1, 2});
+            DirectColorModel cm = (DirectColorModel) offscreenImage.getColorModel();
+            DirectColorModel newCM = new DirectColorModel(cm.getPixelSize(),
+                                                          cm.getRedMask(),
+                                                          cm.getGreenMask(),
+                                                          cm.getBlueMask());
+            BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false,  null);
+            try { ImageIO.write(rgbBuffer, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        else {
+            System.out.println("Invalid image file type: " + suffix);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void actionPerformed(ActionEvent e) {
+        FileDialog chooser = new FileDialog(frame, "Use a .png or .jpg extension", FileDialog.SAVE);
+        chooser.setVisible(true);
+        String filename = chooser.getFile();
+        if (filename != null) {
+            save(chooser.getDirectory() + File.separator + chooser.getFile());
+        }
+    }
+
+
+
+   /*************************************************************************
+    *  Event-based interactions.
+    *************************************************************************/
+
+    public void addListener(DrawListener listener) {
+        // ensure there is a window for listenting to events
+        show();
+        listeners.add(listener);
+        frame.addKeyListener(this);
+        frame.addMouseListener(this);
+        frame.addMouseMotionListener(this);
+        frame.setFocusable(true); 
+    }
+
+
+
+
+   /*************************************************************************
+    *  Mouse interactions.
+    *************************************************************************/
+
+    /**
+     * Is the mouse being pressed?
+     * @return true or false
+     */
+    public boolean mousePressed() {
+        synchronized (mouseLock) {
+            return mousePressed;
+        }
+    }
+
+    /**
+     * What is the x-coordinate of the mouse?
+     * @return the value of the x-coordinate of the mouse
+     */
+    public double mouseX() {
+        synchronized (mouseLock) {
+            return mouseX;
+        }
+    }
+
+    /**
+     * What is the y-coordinate of the mouse?
+     * @return the value of the y-coordinate of the mouse
+     */
+    public double mouseY() {
+        synchronized (mouseLock) {
+            return mouseY;
+        }
+    }
+
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseClicked(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseEntered(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseExited(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mousePressed(MouseEvent e) {
+        synchronized (mouseLock) {
+            mouseX = userX(e.getX());
+            mouseY = userY(e.getY());
+            mousePressed = true;
+        }
+        if (e.getButton() == MouseEvent.BUTTON1) {
+           for (DrawListener listener : listeners)
+               listener.mousePressed(userX(e.getX()), userY(e.getY()));
+        }
+
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseReleased(MouseEvent e) {
+        synchronized (mouseLock) {
+            mousePressed = false;
+        }
+        if (e.getButton() == MouseEvent.BUTTON1) {
+           for (DrawListener listener : listeners)
+               listener.mouseReleased(userX(e.getX()), userY(e.getY()));
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseDragged(MouseEvent e)  {
+        synchronized (mouseLock) {
+            mouseX = userX(e.getX());
+            mouseY = userY(e.getY());
+        }
+        // doesn't seem to work if a button is specified
+        for (DrawListener listener : listeners)
+            listener.mouseDragged(userX(e.getX()), userY(e.getY()));
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseMoved(MouseEvent e) {
+        synchronized (mouseLock) {
+            mouseX = userX(e.getX());
+            mouseY = userY(e.getY());
+        }
+    }
+
+
+   /*************************************************************************
+    *  Keyboard interactions.
+    *************************************************************************/
+
+    /**
+     * Has the user typed a key?
+     * @return true if the user has typed a key, false otherwise
+     */
+    public boolean hasNextKeyTyped() {
+        synchronized (keyLock) {
+            return !keysTyped.isEmpty();
+        }
+    }
+
+    /**
+     * What is the next key that was typed by the user?
+     * @return the next key typed
+     */
+    public char nextKeyTyped() {
+        synchronized (keyLock) {
+            return keysTyped.removeLast();
+        }
+    }
+
+   /**
+     * Is the keycode currently being pressed? This method takes as an argument
+     * the keycode (corresponding to a physical key). It can handle action keys
+     * (such as F1 and arrow keys) and modifier keys (such as shift and control).
+     * See <a href = "http://download.oracle.com/javase/6/docs/api/java/awt/event/KeyEvent.html">KeyEvent.java</a>
+     * for a description of key codes.
+     * @return true if keycode is currently being pressed, false otherwise
+     */
+    public boolean isKeyPressed(int keycode) {
+        synchronized (keyLock) {
+            return keysDown.contains(keycode);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyTyped(KeyEvent e) {
+        synchronized (keyLock) {
+            keysTyped.addFirst(e.getKeyChar());
+        }
+
+        // notify all listeners
+        for (DrawListener listener : listeners)
+            listener.keyTyped(e.getKeyChar());
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyPressed(KeyEvent e) {
+        synchronized (keyLock) {
+            keysDown.add(e.getKeyCode());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyReleased(KeyEvent e) {
+        synchronized (keyLock) {
+             keysDown.remove(e.getKeyCode());
+        }
+    }
+
+
+
+
+    /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+
+        // create one drawing window
+        Draw draw1 = new Draw("Test client 1");
+        draw1.square(.2, .8, .1);
+        draw1.filledSquare(.8, .8, .2);
+        draw1.circle(.8, .2, .2);
+        draw1.setPenColor(Draw.MAGENTA);
+        draw1.setPenRadius(.02);
+        draw1.arc(.8, .2, .1, 200, 45);
+
+
+        // create another one
+        Draw draw2 = new Draw("Test client 2");
+        draw2.setCanvasSize(900, 200);
+        // draw a blue diamond
+        draw2.setPenRadius();
+        draw2.setPenColor(Draw.BLUE);
+        double[] x = { .1, .2, .3, .2 };
+        double[] y = { .2, .3, .2, .1 };
+        draw2.filledPolygon(x, y);
+
+        // text
+        draw2.setPenColor(Draw.BLACK);
+        draw2.text(0.2, 0.5, "bdfdfdfdlack text");
+        draw2.setPenColor(Draw.WHITE);
+        draw2.text(0.8, 0.8, "white text");
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/DrawListener.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/DrawListener.java
new file mode 100644
index 000000000..2800bf8e8
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/DrawListener.java
@@ -0,0 +1,7 @@
+package stdlibpack;
+public interface DrawListener {
+    public void mousePressed (double x, double y);
+    public void mouseDragged (double x, double y);
+    public void mouseReleased(double x, double y);
+    public void keyTyped(char c);
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/In.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/In.java
new file mode 100644
index 000000000..b2d003806
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/In.java
@@ -0,0 +1,525 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac In.java
+ *  Execution:    java In   (basic test --- see source for required files)
+ *
+ *  Reads in data of various types from standard input, files, and URLs.
+ *
+ *************************************************************************/
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.HttpURLConnection;
+import java.net.URLConnection;
+import java.util.Scanner;
+import java.util.regex.Pattern;
+
+/**
+ *  <i>Input</i>. This class provides methods for reading strings
+ *  and numbers from standard input, file input, URLs, and sockets. 
+ *  <p>
+ *  The Locale used is: language = English, country = US. This is consistent
+ *  with the formatting conventions with Java floating-point literals,
+ *  command-line arguments (via {@link Double#parseDouble(String)})
+ *  and standard output. 
+ *  <p>
+ *  For additional documentation, see 
+ *  <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> 
+ *  by Robert Sedgewick and Kevin Wayne.
+ *  <p>
+ *  Like {@link Scanner}, reading a token also consumes preceding Java
+ *  whitespace, reading a full line consumes
+ *  the following end-of-line delimeter, while reading a character consumes
+ *  nothing extra. 
+ *  <p>
+ *  Whitespace is defined in {@link Character#isWhitespace(char)}. Newlines
+ *  consist of \n, \r, \r\n, and Unicode hex code points 0x2028, 0x2029, 0x0085;
+ *  see <tt><a href="http://www.docjar.com/html/api/java/util/Scanner.java.html">
+ *  Scanner.java</a></tt> (NB: Java 6u23 and earlier uses only \r, \r, \r\n).
+ *
+ *  @author David Pritchard
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class In {
+    
+    private Scanner scanner;
+
+    /*** begin: section (1 of 2) of code duplicated from In to StdIn */
+    
+    // assume Unicode UTF-8 encoding
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with System.out.
+    private static final java.util.Locale usLocale = 
+        new java.util.Locale("en", "US");
+
+    // the default token separator; we maintain the invariant that this value 
+    // is held by the scanner's delimiter between calls
+    private static final Pattern WHITESPACE_PATTERN
+        = Pattern.compile("\\p{javaWhitespace}+");
+
+    // makes whitespace characters significant 
+    private static final Pattern EMPTY_PATTERN
+        = Pattern.compile("");
+
+    // used to read the entire input. source:
+    // http://weblogs.java.net/blog/pat/archive/2004/10/stupid_scanner_1.html
+    private static final Pattern EVERYTHING_PATTERN
+        = Pattern.compile("\\A");
+
+    /*** end: section (1 of 2) of code duplicated from In to StdIn */
+
+   /**
+     * Create an input stream from standard input.
+     */
+    public In() {
+        scanner = new Scanner(new BufferedInputStream(System.in), charsetName);
+        scanner.useLocale(usLocale);
+    }
+
+   /**
+     * Create an input stream from a socket.
+     */
+    public In(java.net.Socket socket) {
+        try {
+            InputStream is = socket.getInputStream();
+            scanner = new Scanner(new BufferedInputStream(is), charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + socket);
+        }
+    }
+
+   /**
+     * Create an input stream from a URL.
+     */
+    public In(URL url) {
+        try {
+            URLConnection site = url.openConnection();
+            InputStream is     = site.getInputStream();
+            scanner            = new Scanner(new BufferedInputStream(is), charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + url);
+        }
+    }
+
+   /**
+     * Create an input stream from a file.
+     */
+    public In(File file) {
+        try {
+            scanner = new Scanner(file, charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + file);
+        }
+    }
+
+
+   /**
+     * Create an input stream from a filename or web page name.
+     */
+    public In(String s) {
+        try {
+            // first try to read file from local file system
+            File file = new File(s);
+            if (file.exists()) {
+                scanner = new Scanner(file, charsetName);
+                scanner.useLocale(usLocale);
+                return;
+            }
+
+            // next try for files included in jar
+            URL url = getClass().getResource(s);
+
+            // or URL from web
+            if (url == null) { url = new URL(s); }
+
+            URLConnection site = url.openConnection();
+
+            // in order to set User-Agent, replace above line with these two
+            // HttpURLConnection site = (HttpURLConnection) url.openConnection();
+            // site.addRequestProperty("User-Agent", "Mozilla/4.76");
+
+            InputStream is     = site.getInputStream();
+            scanner            = new Scanner(new BufferedInputStream(is), charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + s);
+        }
+    }
+
+    /**
+     * Create an input stream from a given Scanner source; use with 
+     * <tt>new Scanner(String)</tt> to read from a string.
+     * <p>
+     * Note that this does not create a defensive copy, so the
+     * scanner will be mutated as you read on. 
+     */
+    public In(Scanner scanner) {
+        this.scanner = scanner;
+    }
+
+    /**
+     * Does the input stream exist?
+     */
+    public boolean exists()  {
+        return scanner != null;
+    }
+    
+    /*** begin: section (2 of 2) of code duplicated from In to StdIn,
+      *  with all methods changed from "public" to "public static" ***/
+
+   /**
+     * Is the input empty (except possibly for whitespace)? Use this
+     * to know whether the next call to {@link #readString()}, 
+     * {@link #readDouble()}, etc will succeed.
+     */
+    public boolean isEmpty() {
+        return !scanner.hasNext();
+    }
+
+   /**
+     * Does the input have a next line? Use this to know whether the
+     * next call to {@link #readLine()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextChar()}.
+     */
+    public boolean hasNextLine() {
+        return scanner.hasNextLine();
+    }
+
+    /**
+     * Is the input empty (including whitespace)? Use this to know 
+     * whether the next call to {@link #readChar()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextLine()}.
+     */
+    public boolean hasNextChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        boolean result = scanner.hasNext();
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return result;
+    }
+
+
+   /**
+     * Read and return the next line.
+     */
+    public String readLine() {
+        String line;
+        try                 { line = scanner.nextLine(); }
+        catch (Exception e) { line = null;               }
+        return line;
+    }
+
+    /**
+     * Read and return the next character.
+     */
+    public char readChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        String ch = scanner.next();
+        assert (ch.length() == 1) : "Internal (Std)In.readChar() error!"
+            + " Please contact the authors.";
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return ch.charAt(0);
+    }  
+
+
+   /**
+     * Read and return the remainder of the input as a string.
+     */
+    public String readAll() {
+        if (!scanner.hasNextLine())
+            return "";
+
+        String result = scanner.useDelimiter(EVERYTHING_PATTERN).next();
+        // not that important to reset delimeter, since now scanner is empty
+        scanner.useDelimiter(WHITESPACE_PATTERN); // but let's do it anyway
+        return result;
+    }
+
+
+   /**
+     * Read and return the next string.
+     */
+    public String readString() {
+        return scanner.next();
+    }
+
+   /**
+     * Read and return the next int.
+     */
+    public int readInt() {
+        return scanner.nextInt();
+    }
+
+   /**
+     * Read and return the next double.
+     */
+    public double readDouble() {
+        return scanner.nextDouble();
+    }
+
+   /**
+     * Read and return the next float.
+     */
+    public float readFloat() {
+        return scanner.nextFloat();
+    }
+
+   /**
+     * Read and return the next long.
+     */
+    public long readLong() {
+        return scanner.nextLong();
+    }
+
+   /**
+     * Read and return the next short.
+     */
+    public short readShort() {
+        return scanner.nextShort();
+    }
+
+   /**
+     * Read and return the next byte.
+     */
+    public byte readByte() {
+        return scanner.nextByte();
+    }
+
+    /**
+     * Read and return the next boolean, allowing case-insensitive
+     * "true" or "1" for true, and "false" or "0" for false.
+     */
+    public boolean readBoolean() {
+        String s = readString();
+        if (s.equalsIgnoreCase("true"))  return true;
+        if (s.equalsIgnoreCase("false")) return false;
+        if (s.equals("1"))               return true;
+        if (s.equals("0"))               return false;
+        throw new java.util.InputMismatchException();
+    }
+
+    /**
+     * Read all strings until the end of input is reached, and return them.
+     */
+    public String[] readAllStrings() {
+        // we could use readAll.trim().split(), but that's not consistent
+        // since trim() uses characters 0x00..0x20 as whitespace
+        String[] tokens = WHITESPACE_PATTERN.split(readAll());
+        if (tokens.length == 0 || tokens[0].length() > 0)
+            return tokens;
+        String[] decapitokens = new String[tokens.length-1];
+        for (int i = 0; i < tokens.length-1; i++)
+            decapitokens[i] = tokens[i+1];
+        return decapitokens;
+    }
+
+    /**
+     * Read all ints until the end of input is reached, and return them.
+     */
+    public int[] readAllInts() {
+        String[] fields = readAllStrings();
+        int[] vals = new int[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Integer.parseInt(fields[i]);
+        return vals;
+    }
+
+    /**
+     * Read all doubles until the end of input is reached, and return them.
+     */
+    public double[] readAllDoubles() {
+        String[] fields = readAllStrings();
+        double[] vals = new double[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Double.parseDouble(fields[i]);
+        return vals;
+    }
+    
+    /*** end: section (2 of 2) of code duplicated from In to StdIn */
+    
+   /**
+     * Close the input stream.
+     */
+    public void close() {
+        scanner.close();  
+    }
+
+    /**
+     * Reads all ints from a file 
+     * @deprecated Clearer to use 
+     * <tt>new In(filename)</tt>.{@link #readAllInts()}
+     */
+    public static int[] readInts(String filename) {
+        return new In(filename).readAllInts();
+    }
+
+   /**
+     * Reads all doubles from a file
+     * @deprecated Clearer to use 
+     * <tt>new In(filename)</tt>.{@link #readAllDoubles()}
+     */
+    public static double[] readDoubles(String filename) {
+        return new In(filename).readAllDoubles();
+    }
+
+   /**
+     * Reads all strings from a file
+     * @deprecated Clearer to use 
+     * <tt>new In(filename)</tt>.{@link #readAllStrings()}
+     */
+    public static String[] readStrings(String filename) {
+        return new In(filename).readAllStrings();
+    }
+
+    /**
+     * Reads all ints from stdin 
+     * @deprecated Clearer to use {@link StdIn#readAllInts()}
+     */
+    public static int[] readInts() {
+        return new In().readAllInts();
+    }
+
+   /**
+     * Reads all doubles from stdin
+     * @deprecated Clearer to use {@link StdIn#readAllDoubles()}
+     */
+    public static double[] readDoubles() {
+        return new In().readAllDoubles();
+    }
+
+   /**
+     * Reads all strings from stdin
+     * @deprecated Clearer to use {@link StdIn#readAllStrings()}
+     */
+    public static String[] readStrings() {
+        return new In().readAllStrings();
+    }
+    
+   /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+        In in;
+        String urlName = "http://introcs.cs.princeton.edu/stdlib/InTest.txt";
+
+        // read from a URL
+        System.out.println("readAll() from URL " + urlName);
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In(urlName);
+            System.out.println(in.readAll());
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+        // read one line at a time from URL
+        System.out.println("readLine() from URL " + urlName);
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In(urlName);
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+        // read one string at a time from URL
+        System.out.println("readString() from URL " + urlName);
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In(urlName);
+            while (!in.isEmpty()) {
+                String s = in.readString();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+
+        // read one line at a time from file in current directory
+        System.out.println("readLine() from current directory");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("./InTest.txt");
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+
+        // read one line at a time from file using relative path
+        System.out.println("readLine() from relative path");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("../stdlib/InTest.txt");
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+        // read one char at a time
+        System.out.println("readChar() from file");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("InTest.txt");
+            while (!in.isEmpty()) {
+                char c = in.readChar();
+                System.out.print(c);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+        System.out.println();
+
+        // read one line at a time from absolute OS X / Linux path
+        System.out.println("readLine() from absolute OS X / Linux path");
+        System.out.println("---------------------------------------------------------------------------");
+        in = new In("/n/fs/introcs/www/java/stdlib/InTest.txt");
+        try {
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+
+        // read one line at a time from absolute Windows path
+        System.out.println("readLine() from absolute Windows path");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("G:\\www\\introcs\\stdlib\\InTest.txt");
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+            System.out.println();
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Out.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Out.java
new file mode 100644
index 000000000..eba2baac0
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Out.java
@@ -0,0 +1,260 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac Out.java
+ *  Execution:    java Out
+ *
+ *  Writes data of various types to: stdout, file, or socket.
+ *
+ *************************************************************************/
+
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.net.Socket;
+import java.util.Locale;
+
+/**
+ *  This class provides methods for writing strings and numbers to
+ *  various output streams, including standard output, file, and sockets.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class Out {
+
+    // force Unicode UTF-8 encoding; otherwise it's system dependent
+    private static String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with In
+    private static final Locale US_LOCALE = new Locale("en", "US");
+
+    private PrintWriter out;
+
+   /**
+     * Create an Out object using an OutputStream.
+     */
+    public Out(OutputStream os) {
+        try {
+            OutputStreamWriter osw = new OutputStreamWriter(os, charsetName);
+            out = new PrintWriter(osw, true);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Create an Out object using standard output.
+     */
+    public Out() { this(System.out); }
+
+   /**
+     * Create an Out object using a Socket.
+     */
+    public Out(Socket socket) {
+        try {
+            OutputStream os = socket.getOutputStream();
+            OutputStreamWriter osw = new OutputStreamWriter(os, charsetName);
+            out = new PrintWriter(osw, true);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Create an Out object using a file specified by the given name.
+     */
+    public Out(String s) {
+        try {
+            OutputStream os = new FileOutputStream(s);
+            OutputStreamWriter osw = new OutputStreamWriter(os, charsetName);
+            out = new PrintWriter(osw, true);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Close the output stream.
+     */
+    public void close() { out.close(); }
+
+
+
+   /**
+     * Terminate the line.
+     */
+    public void println() {
+        out.println();
+    }
+
+   /**
+     * Print an object and then terminate the line.
+     */
+    public void println(Object x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a boolean and then terminate the line.
+     */
+    public void println(boolean x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a char and then terminate the line.
+     */
+    public void println(char x) {
+        out.println(x);
+    }
+
+   /**
+     * Print an double and then terminate the line.
+     */
+    public void println(double x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a float and then terminate the line.
+     */
+    public void println(float x) {
+        out.println(x);
+    }
+
+   /**
+     * Print an int and then terminate the line.
+     */
+    public void println(int x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a long and then terminate the line.
+     */
+    public void println(long x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a byte and then terminate the line.
+     */
+    public void println(byte x) {
+        out.println(x);
+    }
+
+
+
+   /**
+     * Flush the output stream.
+     */
+    public void print() {
+        out.flush();
+    }
+
+   /**
+     * Print an object and then flush the output stream.
+     */
+    public void print(Object x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an boolean and then flush the output stream.
+     */
+    public void print(boolean x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an char and then flush the output stream.
+     */
+    public void print(char x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an double and then flush the output stream.
+     */
+    public void print(double x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a float and then flush the output stream.
+     */
+    public void print(float x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an int and then flush the output stream.
+     */
+    public void print(int x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a long and then flush the output stream.
+     */
+    public void print(long x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a byte and then flush the output stream.
+     */
+    public void print(byte x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string using the specified format string and arguments,
+     * and then flush the output stream.
+     */
+    public void printf(String format, Object... args) {
+        out.printf(US_LOCALE, format, args);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string using the specified locale, format string and arguments,
+     * and then flush the output stream.
+     */
+    public void printf(Locale locale, String format, Object... args) {
+        out.printf(locale, format, args);
+        out.flush();
+    }
+
+
+   /**
+     * A test client.
+     */
+    public static void main(String[] args) {
+        Out out;
+
+        // write to stdout
+        out = new Out();
+        out.println("Test 1");
+        out.close();
+
+        // write to a file
+        out = new Out("test.txt");
+        out.println("Test 2");
+        out.close();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Picture.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Picture.java
new file mode 100644
index 000000000..33eaa88c5
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Picture.java
@@ -0,0 +1,289 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac Picture.java
+ *  Execution:    java Picture imagename
+ *
+ *  Data type for manipulating individual pixels of an image. The original
+ *  image can be read from a file in jpg, gif, or png format, or the
+ *  user can create a blank image of a given size. Includes methods for
+ *  displaying the image in a window on the screen or saving to a file.
+ *
+ *  % java Picture mandrill.jpg
+ *
+ *  Remarks
+ *  -------
+ *   - pixel (x, y) is column x and row y, where (0, 0) is upper left
+ *
+ *   - see also GrayPicture.java for a grayscale version
+ *
+ *************************************************************************/
+
+import java.awt.Color;
+import java.awt.FileDialog;
+import java.awt.Toolkit;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.KeyEvent;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+import javax.imageio.ImageIO;
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.KeyStroke;
+
+
+/**
+ *  This class provides methods for manipulating individual pixels of
+ *  an image. The original image can be read from a file in JPEG, GIF,
+ *  or PNG format, or the user can create a blank image of a given size.
+ *  This class includes methods for displaying the image in a window on
+ *  the screen or saving to a file.
+ *  <p>
+ *  By default, pixel (x, y) is column x, row y, where (0, 0) is upper left.
+ *  The method setOriginLowerLeft() change the origin to the lower left.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class Picture implements ActionListener {
+    private BufferedImage image;               // the rasterized image
+    private JFrame frame;                      // on-screen view
+    private String filename;                   // name of file
+    private boolean isOriginUpperLeft = true;  // location of origin
+    private final int width, height;           // width and height
+
+   /**
+     * Create a blank w-by-h picture, where each pixel is black.
+     */
+    public Picture(int w, int h) {
+        width = w;
+        height = h;
+        image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
+        // set to TYPE_INT_ARGB to support transparency
+        filename = w + "-by-" + h;
+    }
+
+   /**
+     * Copy constructor.
+     */
+    public Picture(Picture pic) {
+        width = pic.width();
+        height = pic.height();
+        image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+        filename = pic.filename;
+        for (int i = 0; i < width(); i++)
+            for (int j = 0; j < height(); j++)
+                image.setRGB(i, j, pic.get(i, j).getRGB());
+    }
+
+   /**
+     * Create a picture by reading in a .png, .gif, or .jpg from
+     * the given filename or URL name.
+     */
+    public Picture(String filename) {
+        this.filename = filename;
+        try {
+            // try to read from file in working directory
+            File file = new File(filename);
+            if (file.isFile()) {
+                image = ImageIO.read(file);
+            }
+
+            // now try to read from file in same directory as this .class file
+            else {
+                URL url = getClass().getResource(filename);
+                if (url == null) { url = new URL(filename); }
+                image = ImageIO.read(url);
+            }
+            width  = image.getWidth(null);
+            height = image.getHeight(null);
+        }
+        catch (IOException e) {
+            // e.printStackTrace();
+            throw new RuntimeException("Could not open file: " + filename);
+        }
+    }
+
+   /**
+     * Create a picture by reading in a .png, .gif, or .jpg from a File.
+     */
+    public Picture(File file) {
+        try { image = ImageIO.read(file); }
+        catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException("Could not open file: " + file);
+        }
+        if (image == null) {
+            throw new RuntimeException("Invalid image file: " + file);
+        }
+        width  = image.getWidth(null);
+        height = image.getHeight(null);
+        filename = file.getName();
+    }
+
+   /**
+     * Return a JLabel containing this Picture, for embedding in a JPanel,
+     * JFrame or other GUI widget.
+     */
+    public JLabel getJLabel() {
+        if (image == null) { return null; }         // no image available
+        ImageIcon icon = new ImageIcon(image);
+        return new JLabel(icon);
+    }
+
+   /**
+     * Set the origin to be the upper left pixel.
+     */
+    public void setOriginUpperLeft() {
+        isOriginUpperLeft = true;
+    }
+
+   /**
+     * Set the origin to be the lower left pixel.
+     */
+    public void setOriginLowerLeft() {
+        isOriginUpperLeft = false;
+    }
+
+   /**
+     * Display the picture in a window on the screen.
+     */
+    public void show() {
+
+        // create the GUI for viewing the image if needed
+        if (frame == null) {
+            frame = new JFrame();
+
+            JMenuBar menuBar = new JMenuBar();
+            JMenu menu = new JMenu("File");
+            menuBar.add(menu);
+            JMenuItem menuItem1 = new JMenuItem(" Save...   ");
+            menuItem1.addActionListener(this);
+            menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                                     Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+            menu.add(menuItem1);
+            frame.setJMenuBar(menuBar);
+
+
+
+            frame.setContentPane(getJLabel());
+            // f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+            frame.setTitle(filename);
+            frame.setResizable(false);
+            frame.pack();
+            frame.setVisible(true);
+        }
+
+        // draw
+        frame.repaint();
+    }
+
+   /**
+     * Return the height of the picture in pixels.
+     */
+    public int height() {
+        return height;
+    }
+
+   /**
+     * Return the width of the picture in pixels.
+     */
+    public int width() {
+        return width;
+    }
+
+   /**
+     * Return the color of pixel (i, j).
+     */
+    public Color get(int i, int j) {
+        if (isOriginUpperLeft) return new Color(image.getRGB(i, j));
+        else                   return new Color(image.getRGB(i, height - j - 1));
+    }
+
+   /**
+     * Set the color of pixel (i, j) to c.
+     */
+    public void set(int i, int j, Color c) {
+        if (c == null) { throw new RuntimeException("can't set Color to null"); }
+        if (isOriginUpperLeft) image.setRGB(i, j, c.getRGB());
+        else                   image.setRGB(i, height - j - 1, c.getRGB());
+    }
+
+   /**
+     * Is this Picture equal to obj?
+     */
+    public boolean equals(Object obj) {
+        if (obj == this) return true;
+        if (obj == null) return false;
+        if (obj.getClass() != this.getClass()) return false;
+        Picture that = (Picture) obj;
+        if (this.width()  != that.width())  return false;
+        if (this.height() != that.height()) return false;
+        for (int x = 0; x < width(); x++)
+            for (int y = 0; y < height(); y++)
+                if (!this.get(x, y).equals(that.get(x, y))) return false;
+        return true;
+    }
+
+
+   /**
+     * Save the picture to a file in a standard image format.
+     * The filetype must be .png or .jpg.
+     */
+    public void save(String name) {
+        save(new File(name));
+    }
+
+   /**
+     * Save the picture to a file in a standard image format.
+     */
+    public void save(File file) {
+        this.filename = file.getName();
+        if (frame != null) { frame.setTitle(filename); }
+        String suffix = filename.substring(filename.lastIndexOf('.') + 1);
+        suffix = suffix.toLowerCase();
+        if (suffix.equals("jpg") || suffix.equals("png")) {
+            try { ImageIO.write(image, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+        else {
+            System.out.println("Error: filename must end in .jpg or .png");
+        }
+    }
+
+   /**
+     * Opens a save dialog box when the user selects "Save As" from the menu.
+     */
+    public void actionPerformed(ActionEvent e) {
+        FileDialog chooser = new FileDialog(frame,
+                             "Use a .png or .jpg extension", FileDialog.SAVE);
+        chooser.setVisible(true);
+        if (chooser.getFile() != null) {
+            save(chooser.getDirectory() + File.separator + chooser.getFile());
+        }
+    }
+
+
+   /**
+     * Test client. Reads a picture specified by the command-line argument,
+     * and shows it in a window on the screen.
+     */
+    public static void main(String[] args) {
+        Picture pic = new Picture(args[0]);
+        System.out.printf("%d-by-%d\n", pic.width(), pic.height());
+        pic.show();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Point.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Point.java
new file mode 100644
index 000000000..4ffbc07bb
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Point.java
@@ -0,0 +1,51 @@
+package stdlibpack; /*************************************************************************
+ *  Compilation:  javac Point.java
+ *  Execution:    java Point
+ *
+ *  Immutable data type for 2D points.
+ *
+ *************************************************************************/
+
+public class Point { 
+    private double x;   // Cartesian
+    private double y;   // coordinates
+   
+    // create and initialize a point with given (x, y)
+    public Point(double x, double y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    // return Euclidean distance between invoking point p and q
+    public double distanceTo(Point that) {
+        double dx = this.x - that.x;
+        double dy = this.y - that.y;
+        return Math.sqrt(dx*dx + dy*dy);
+    }
+
+    // draw point using standard draw
+    public void draw() {
+        StdDraw.point(x, y);
+    }
+
+    // draw the line from the invoking point p to q using standard draw
+    public void drawTo(Point that) {
+        StdDraw.line(this.x, this.y, that.x, that.y);
+    }
+
+    // return string representation of this point
+    public String toString() {
+        return "(" + x + ", " + y + ")";
+    }
+
+
+
+    // test client
+    public static void main(String[] args) {
+        Point p = new Point(0.6, 0.2);
+        System.out.println("p  = " + p);
+        Point q = new Point(0.5, 0.5);
+        System.out.println("q  = " + q);
+        System.out.println("dist(p, q) = " + p.distanceTo(q));
+    }
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Queue.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Queue.java
new file mode 100644
index 000000000..efa0fcb56
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Queue.java
@@ -0,0 +1,162 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac Queue.java
+ *  Execution:    java Queue < input.txt
+ *  Data files:   http://algs4.cs.princeton.edu/13stacks/tobe.txt  
+ *
+ *  A generic queue, implemented using a linked list.
+ *
+ *  % java Queue < tobe.txt 
+ *  to be or not to be (2 left on queue)
+ *
+ *************************************************************************/
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+/**
+ *  The <tt>Queue</tt> class represents a first-in-first-out (FIFO)
+ *  queue of generic items.
+ *  It supports the usual <em>enqueue</em> and <em>dequeue</em>
+ *  operations, along with methods for peeking at the first item,
+ *  testing if the queue is empty, and iterating through
+ *  the items in FIFO order.
+ *  <p>
+ *  This implementation uses a singly-linked list with a static nested class for
+ *  linked-list nodes. See {@link LinkedQueue} for the version from the
+ *  textbook that uses a non-static nested class.
+ *  The <em>enqueue</em>, <em>dequeue</em>, <em>peek</em>, <em>size</em>, and <em>is-empty</em>
+ *  operations all take constant time in the worst case.
+ *  <p>
+ *  For additional documentation, see <a href="http://algs4.cs.princeton.edu/13stacks">Section 1.3</a> of
+ *  <i>Algorithms, 4th Edition</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class Queue<Item> implements Iterable<Item> {
+    private int N;               // number of elements on queue
+    private Node<Item> first;    // beginning of queue
+    private Node<Item> last;     // end of queue
+
+    // helper linked list class
+    private static class Node<Item> {
+        private Item item;
+        private Node<Item> next;
+    }
+
+    /**
+     * Initializes an empty queue.
+     */
+    public Queue() {
+        first = null;
+        last  = null;
+        N = 0;
+    }
+
+    /**
+     * Is this queue empty?
+     * @return true if this queue is empty; false otherwise
+     */
+    public boolean isEmpty() {
+        return first == null;
+    }
+
+    /**
+     * Returns the number of items in this queue.
+     * @return the number of items in this queue
+     */
+    public int size() {
+        return N;     
+    }
+
+    /**
+     * Returns the item least recently added to this queue.
+     * @return the item least recently added to this queue
+     * @throws java.util.NoSuchElementException if this queue is empty
+     */
+    public Item peek() {
+        if (isEmpty()) throw new NoSuchElementException("Queue underflow");
+        return first.item;
+    }
+
+    /**
+     * Adds the item to this queue.
+     * @param item the item to add
+     */
+    public void enqueue(Item item) {
+        Node<Item> oldlast = last;
+        last = new Node<Item>();
+        last.item = item;
+        last.next = null;
+        if (isEmpty()) first = last;
+        else           oldlast.next = last;
+        N++;
+    }
+
+    /**
+     * Removes and returns the item on this queue that was least recently added.
+     * @return the item on this queue that was least recently added
+     * @throws java.util.NoSuchElementException if this queue is empty
+     */
+    public Item dequeue() {
+        if (isEmpty()) throw new NoSuchElementException("Queue underflow");
+        Item item = first.item;
+        first = first.next;
+        N--;
+        if (isEmpty()) last = null;   // to avoid loitering
+        return item;
+    }
+
+    /**
+     * Returns a string representation of this queue.
+     * @return the sequence of items in FIFO order, separated by spaces
+     */
+    public String toString() {
+        StringBuilder s = new StringBuilder();
+        for (Item item : this)
+            s.append(item + " ");
+        return s.toString();
+    } 
+
+    /**
+     * Returns an iterator that iterates over the items in this queue in FIFO order.
+     * @return an iterator that iterates over the items in this queue in FIFO order
+     */
+    public Iterator<Item> iterator()  {
+        return new ListIterator<Item>(first);  
+    }
+
+    // an iterator, doesn't implement remove() since it's optional
+    private class ListIterator<Item> implements Iterator<Item> {
+        private Node<Item> current;
+
+        public ListIterator(Node<Item> first) {
+            current = first;
+        }
+
+        public boolean hasNext()  { return current != null;                     }
+        public void remove()      { throw new UnsupportedOperationException();  }
+
+        public Item next() {
+            if (!hasNext()) throw new NoSuchElementException();
+            Item item = current.item;
+            current = current.next; 
+            return item;
+        }
+    }
+
+
+    /**
+     * Unit tests the <tt>Queue</tt> data type.
+     */
+    public static void main(String[] args) {
+        Queue<String> q = new Queue<String>();
+        while (!StdIn.isEmpty()) {
+            String item = StdIn.readString();
+            if (!item.equals("-")) q.enqueue(item);
+            else if (!q.isEmpty()) StdOut.print(q.dequeue() + " ");
+        }
+        StdOut.println("(" + q.size() + " left on queue)");
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/ST.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/ST.java
new file mode 100644
index 000000000..ec3077040
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/ST.java
@@ -0,0 +1,245 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac ST.java
+ *  Execution:    java ST
+ *  
+ *  Sorted symbol table implementation using a java.util.TreeMap.
+ *  Does not allow duplicates.
+ *
+ *  % java ST
+ *
+ *************************************************************************/
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+/**
+ *  The <tt>ST</tt> class represents an ordered symbol table of generic
+ *  key-value pairs.
+ *  It supports the usual <em>put</em>, <em>get</em>, <em>contains</em>,
+ *  <em>delete</em>, <em>size</em>, and <em>is-empty</em> methods.
+ *  It also provides ordered methods for finding the <em>minimum</em>,
+ *  <em>maximum</em>, <em>floor</em>, and <em>ceiling</em>.
+ *  It also provides a <em>keys</em> method for iterating over all of the keys.
+ *  A symbol table implements the <em>associative array</em> abstraction:
+ *  when associating a value with a key that is already in the symbol table,
+ *  the convention is to replace the old value with the new value.
+ *  Unlike {@link java.util.Map}, this class uses the convention that
+ *  values cannot be <tt>null</tt>&mdash;setting the
+ *  value associated with a key to <tt>null</tt> is equivalent to deleting the key
+ *  from the symbol table.
+ *  <p>
+ *  This implementation uses a balanced binary search tree. It requires that
+ *  the key type implements the <tt>Comparable</tt> interface and calls the
+ *  <tt>compareTo()</tt> and method to compare two keys. It does not call either
+ *  <tt>equals()</tt> or <tt>hashCode()</tt>.
+ *  The <em>put</em>, <em>contains</em>, <em>remove</em>, <em>minimum</em>,
+ *  <em>maximum</em>, <em>ceiling</em>, and <em>floor</em> operations each take
+ *  logarithmic time in the worst case.
+ *  The <em>size</em>, and <em>is-empty</em> operations take constant time.
+ *  Construction takes constant time.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/44st">Section 4.4</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne. 
+ */
+public class ST<Key extends Comparable<Key>, Value> implements Iterable<Key> {
+
+    private TreeMap<Key, Value> st;
+
+    /**
+     * Initializes an empty symbol table.
+     */
+    public ST() {
+        st = new TreeMap<Key, Value>();
+    }
+
+
+    /**
+     * Returns the value associated with the given key.
+     * @param key the key
+     * @return the value associated with the given key if the key is in the symbol table
+     *     and <tt>null</tt> if the key is not in the symbol table
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Value get(Key key) {
+        if (key == null) throw new NullPointerException("called get() with null key");
+        return st.get(key);
+    }
+
+    /**
+     * Inserts the key-value pair into the symbol table, overwriting the old value
+     * with the new value if the key is already in the symbol table.
+     * If the value is <tt>null</tt>, this effectively deletes the key from the symbol table.
+     * @param key the key
+     * @param val the value
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public void put(Key key, Value val) {
+        if (key == null) throw new NullPointerException("called put() with null key");
+        if (val == null) st.remove(key);
+        else             st.put(key, val);
+    }
+
+    /**
+     * Removes the key and associated value from the symbol table
+     * (if the key is in the symbol table).
+     * @param key the key
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public void delete(Key key) {
+        if (key == null) throw new NullPointerException("called delete() with null key");
+        st.remove(key);
+    }
+
+    /**
+     * Does this symbol table contain the given key?
+     * @param key the key
+     * @return <tt>true</tt> if this symbol table contains <tt>key</tt> and
+     *     <tt>false</tt> otherwise
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public boolean contains(Key key) {
+        if (key == null) throw new NullPointerException("called contains() with null key");
+        return st.containsKey(key);
+    }
+
+    /**
+     * Returns the number of key-value pairs in this symbol table.
+     * @return the number of key-value pairs in this symbol table
+     */
+    public int size() {
+        return st.size();
+    }
+
+    /**
+     * Is this symbol table empty?
+     * @return <tt>true</tt> if this symbol table is empty and <tt>false</tt> otherwise
+     */
+    public boolean isEmpty() {
+        return size() == 0;
+    }
+
+    /**
+     * Returns all keys in the symbol table as an <tt>Iterable</tt>.
+     * To iterate over all of the keys in the symbol table named <tt>st</tt>,
+     * use the foreach notation: <tt>for (Key key : st.keys())</tt>.
+     * @return all keys in the sybol table as an <tt>Iterable</tt>
+     */
+    public Iterable<Key> keys() {
+        return st.keySet();
+    }
+
+    /**
+     * Returns all of the keys in the symbol table as an iterator.
+     * To iterate over all of the keys in a symbol table named <tt>st</tt>, use the
+     * foreach notation: <tt>for (Key key : st)</tt>.
+     * @return an iterator to all of the keys in the symbol table
+     */
+    public Iterator<Key> iterator() {
+        return st.keySet().iterator();
+    }
+
+    /**
+     * Returns the smallest key in the symbol table.
+     * @return the smallest key in the symbol table
+     * @throws NoSuchElementException if the symbol table is empty
+     */
+    public Key min() {
+        if (isEmpty()) throw new NoSuchElementException("called min() with empty symbol table");
+        return st.firstKey();
+    }
+
+    /**
+     * Returns the largest key in the symbol table.
+     * @return the largest key in the symbol table
+     * @throws NoSuchElementException if the symbol table is empty
+     */
+    public Key max() {
+        if (isEmpty()) throw new NoSuchElementException("called max() with empty symbol table");
+        return st.lastKey();
+    }
+
+    /**
+     * Returns the smallest key in the symbol table greater than or equal to <tt>key</tt>.
+     * @return the smallest key in the symbol table greater than or equal to <tt>key</tt>
+     * @param key the key
+     * @throws NoSuchElementException if the symbol table is empty
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Key ceil(Key key) {
+        if (key == null) throw new NullPointerException("called ceil() with null key");
+        SortedMap<Key, Value> tail = st.tailMap(key);
+        if (tail.isEmpty()) throw new NoSuchElementException();
+        return tail.firstKey();
+    }
+
+    /**
+     * Returns the largest key in the symbol table less than or equal to <tt>key</tt>.
+     * @return the largest key in the symbol table less than or equal to <tt>key</tt>
+     * @param key the key
+     * @throws NoSuchElementException if the symbol table is empty
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Key floor(Key key) {
+        if (key == null) throw new NullPointerException("called floor() with null key");
+        // headMap does not include key if present (!)
+        if (st.containsKey(key)) return key;
+        SortedMap<Key, Value> head = st.headMap(key);
+        if (head.isEmpty()) throw new NoSuchElementException();
+        return head.lastKey();
+    }
+
+    /**
+     * Unit tests the <tt>ST</tt> data type.
+     */
+    public static void main(String[] args) {
+        ST<String, String> st = new ST<String, String>();
+
+       // insert some key-value pairs
+        st.put("www.cs.princeton.edu",   "128.112.136.11");
+        st.put("www.cs.princeton.edu",   "128.112.136.35");    // overwrite old value
+        st.put("www.princeton.edu",      "128.112.130.211");
+        st.put("www.math.princeton.edu", "128.112.18.11");
+        st.put("www.yale.edu",           "130.132.51.8");
+        st.put("www.amazon.com",         "207.171.163.90");
+        st.put("www.simpsons.com",       "209.123.16.34");
+        st.put("www.stanford.edu",       "171.67.16.120");
+        st.put("www.google.com",         "64.233.161.99");
+        st.put("www.ibm.com",            "129.42.16.99");
+        st.put("www.apple.com",          "17.254.0.91");
+        st.put("www.slashdot.com",       "66.35.250.150");
+        st.put("www.whitehouse.gov",     "204.153.49.136");
+        st.put("www.espn.com",           "199.181.132.250");
+        st.put("www.snopes.com",         "66.165.133.65");
+        st.put("www.movies.com",         "199.181.132.250");
+        st.put("www.cnn.com",            "64.236.16.20");
+        st.put("www.iitb.ac.in",         "202.68.145.210");
+
+
+        StdOut.println(st.get("www.cs.princeton.edu"));
+        StdOut.println(st.get("www.harvardsucks.com"));
+        StdOut.println(st.get("www.simpsons.com"));
+        StdOut.println();
+
+        StdOut.println("ceil(www.simpsonr.com) = " + st.ceil("www.simpsonr.com"));
+        StdOut.println("ceil(www.simpsons.com) = " + st.ceil("www.simpsons.com"));
+        StdOut.println("ceil(www.simpsont.com) = " + st.ceil("www.simpsont.com"));
+        StdOut.println("floor(www.simpsonr.com) = " + st.floor("www.simpsonr.com"));
+        StdOut.println("floor(www.simpsons.com) = " + st.floor("www.simpsons.com"));
+        StdOut.println("floor(www.simpsont.com) = " + st.floor("www.simpsont.com"));
+
+        StdOut.println();
+
+        StdOut.println("min key: " + st.min());
+        StdOut.println("max key: " + st.max());
+        StdOut.println("size:    " + st.size());
+        StdOut.println();
+
+        // print out all key-value pairs in lexicographic order
+        for (String s : st.keys())
+            StdOut.println(s + " " + st.get(s));
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Stack.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Stack.java
new file mode 100644
index 000000000..bae3c6a93
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Stack.java
@@ -0,0 +1,165 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac Stack.java
+ *  Execution:    java Stack < input.txt
+ *
+ *  A generic stack, implemented using a singly-linked list.
+ *  Each stack element is of type Item.
+ *
+ *  This version uses a static nested class Node (to save 8 bytes per
+ *  Node), whereas the version in the textbook uses a non-static nested
+ *  class (for simplicity).
+ *  
+ *  % more tobe.txt 
+ *  to be or not to - be - - that - - - is
+ *
+ *  % java Stack < tobe.txt
+ *  to be not that or be (2 left on stack)
+ *
+ *************************************************************************/
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+/**
+ *  The <tt>Stack</tt> class represents a last-in-first-out (LIFO) stack of generic items.
+ *  It supports the usual <em>push</em> and <em>pop</em> operations, along with methods
+ *  for peeking at the top item, testing if the stack is empty, and iterating through
+ *  the items in LIFO order.
+ *  <p>
+ *  This implementation uses a singly-linked list with a static nested class for
+ *  linked-list nodes. See {@link LinkedStack} for the version from the
+ *  textbook that uses a non-static nested class.
+ *  The <em>push</em>, <em>pop</em>, <em>peek</em>, <em>size</em>, and <em>is-empty</em>
+ *  operations all take constant time in the worst case.
+ *  <p>
+ *  For additional documentation, see <a href="/algs4/13stacks">Section 1.3</a> of
+ *  <i>Algorithms, 4th Edition</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class Stack<Item> implements Iterable<Item> {
+    private int N;                // size of the stack
+    private Node<Item> first;     // top of stack
+
+    // helper linked list class
+    private static class Node<Item> {
+        private Item item;
+        private Node<Item> next;
+    }
+
+    /**
+     * Initializes an empty stack.
+     */
+    public Stack() {
+        first = null;
+        N = 0;
+    }
+
+    /**
+     * Is this stack empty?
+     * @return true if this stack is empty; false otherwise
+     */
+    public boolean isEmpty() {
+        return first == null;
+    }
+
+    /**
+     * Returns the number of items in the stack.
+     * @return the number of items in the stack
+     */
+    public int size() {
+        return N;
+    }
+
+    /**
+     * Adds the item to this stack.
+     * @param item the item to add
+     */
+    public void push(Item item) {
+        Node<Item> oldfirst = first;
+        first = new Node<Item>();
+        first.item = item;
+        first.next = oldfirst;
+        N++;
+    }
+
+    /**
+     * Removes and returns the item most recently added to this stack.
+     * @return the item most recently added
+     * @throws java.util.NoSuchElementException if this stack is empty
+     */
+    public Item pop() {
+        if (isEmpty()) throw new NoSuchElementException("Stack underflow");
+        Item item = first.item;        // save item to return
+        first = first.next;            // delete first node
+        N--;
+        return item;                   // return the saved item
+    }
+
+
+    /**
+     * Returns (but does not remove) the item most recently added to this stack.
+     * @return the item most recently added to this stack
+     * @throws java.util.NoSuchElementException if this stack is empty
+     */
+    public Item peek() {
+        if (isEmpty()) throw new NoSuchElementException("Stack underflow");
+        return first.item;
+    }
+
+    /**
+     * Returns a string representation of this stack.
+     * @return the sequence of items in the stack in LIFO order, separated by spaces
+     */
+    public String toString() {
+        StringBuilder s = new StringBuilder();
+        for (Item item : this)
+            s.append(item + " ");
+        return s.toString();
+    }
+       
+
+    /**
+     * Returns an iterator to this stack that iterates through the items in LIFO order.
+     * @return an iterator to this stack that iterates through the items in LIFO order.
+     */
+    public Iterator<Item> iterator() {
+        return new ListIterator<Item>(first);
+    }
+
+    // an iterator, doesn't implement remove() since it's optional
+    private class ListIterator<Item> implements Iterator<Item> {
+        private Node<Item> current;
+
+        public ListIterator(Node<Item> first) {
+            current = first;
+        }
+        public boolean hasNext()  { return current != null;                     }
+        public void remove()      { throw new UnsupportedOperationException();  }
+
+        public Item next() {
+            if (!hasNext()) throw new NoSuchElementException();
+            Item item = current.item;
+            current = current.next; 
+            return item;
+        }
+    }
+
+
+    /**
+     * Unit tests the <tt>Stack</tt> data type.
+     */
+    public static void main(String[] args) {
+        Stack<String> s = new Stack<String>();
+        while (!StdIn.isEmpty()) {
+            String item = StdIn.readString();
+            if (!item.equals("-")) s.push(item);
+            else if (!s.isEmpty()) StdOut.print(s.pop() + " ");
+        }
+        StdOut.println("(" + s.size() + " left on stack)");
+    }
+}
+
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdArrayIO.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdArrayIO.java
new file mode 100644
index 000000000..42bf25cdb
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdArrayIO.java
@@ -0,0 +1,253 @@
+package stdlibpack;
+
+/*************************************************************************
+ *  Compilation:  javac StdArrayIO.java
+ *  Execution:    java StdArrayIO < input.txt
+ *
+ *  A library for reading in 1D and 2D arrays of integers, doubles,
+ *  and booleans from standard input and printing them out to
+ *  standard output.
+ *
+ *  % more tinyDouble1D.txt 
+ *  4
+ *    .000  .246  .222  -.032
+ *
+ *  % more tinyDouble2D.txt 
+ *  4 3 
+ *    .000  .270  .000 
+ *    .246  .224 -.036 
+ *    .222  .176  .0893 
+ *   -.032  .739  .270 
+ *
+ *  % more tinyBoolean2D.txt 
+ *  4 3 
+ *    1 1 0
+ *    0 0 0
+ *    0 1 1
+ *    1 1 1
+ *
+ *  % cat tinyDouble1D.txt tinyDouble2D.txt tinyBoolean2D.txt | java StdArrayIO
+ *  4
+ *    0.00000   0.24600   0.22200  -0.03200 
+ *  
+ *  4 3
+ *    0.00000   0.27000   0.00000 
+ *    0.24600   0.22400  -0.03600 
+ *    0.22200   0.17600   0.08930 
+ *    0.03200   0.73900   0.27000 
+ *
+ *  4 3
+ *  1 1 0 
+ *  0 0 0 
+ *  0 1 1 
+ *  1 1 1 
+ *
+ *************************************************************************/
+
+
+/**
+ *  <i>Standard array IO</i>. This class provides methods for reading
+ *  in 1D and 2D arrays from standard input and printing out to 
+ *  standard output.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/22libary">Section 2.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class StdArrayIO {
+
+    /**
+     * Read in and return an array of doubles from standard input.
+     */
+    public static double[] readDouble1D() {
+        int N = StdIn.readInt();
+        double[] a = new double[N];
+        for (int i = 0; i < N; i++) {
+            a[i] = StdIn.readDouble();
+        }
+        return a;
+    }
+
+    /**
+     * Print an array of doubles to standard output.
+     */
+    public static void print(double[] a) {
+        int N = a.length;
+        StdOut.println(N);
+        for (int i = 0; i < N; i++) {
+            StdOut.printf("%9.5f ", a[i]);
+        }
+        StdOut.println();
+    }
+
+        
+    /**
+     * Read in and return an M-by-N array of doubles from standard input.
+     */
+    public static double[][] readDouble2D() {
+        int M = StdIn.readInt();
+        int N = StdIn.readInt();
+        double[][] a = new double[M][N];
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                a[i][j] = StdIn.readDouble();
+            }
+        }
+        return a;
+    }
+
+    /**
+     * Print the M-by-N array of doubles to standard output.
+     */
+    public static void print(double[][] a) {
+        int M = a.length;
+        int N = a[0].length;
+        StdOut.println(M + " " + N);
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                StdOut.printf("%9.5f ", a[i][j]);
+            }
+            StdOut.println();
+        }
+    }
+
+
+    /**
+     * Read in and return an array of ints from standard input.
+     */
+    public static int[] readInt1D() {
+        int N = StdIn.readInt();
+        int[] a = new int[N];
+        for (int i = 0; i < N; i++) {
+            a[i] = StdIn.readInt();
+        }
+        return a;
+    }
+
+    /**
+     * Print an array of ints to standard output.
+     */
+    public static void print(int[] a) {
+        int N = a.length;
+        StdOut.println(N);
+        for (int i = 0; i < N; i++) {
+            StdOut.printf("%9d ", a[i]);
+        }
+        StdOut.println();
+    }
+
+        
+    /**
+     * Read in and return an M-by-N array of ints from standard input.
+     */
+    public static int[][] readInt2D() {
+        int M = StdIn.readInt();
+        int N = StdIn.readInt();
+        int[][] a = new int[M][N];
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                a[i][j] = StdIn.readInt();
+            }
+        }
+        return a;
+    }
+
+    /**
+     * Print the M-by-N array of ints to standard output.
+     */
+    public static void print(int[][] a) {
+        int M = a.length;
+        int N = a[0].length;
+        StdOut.println(M + " " + N);
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                StdOut.printf("%9d ", a[i][j]);
+            }
+            StdOut.println();
+        }
+    }
+
+
+    /**
+     * Read in and return an array of booleans from standard input.
+     */
+    public static boolean[] readBoolean1D() {
+        int N = StdIn.readInt();
+        boolean[] a = new boolean[N];
+        for (int i = 0; i < N; i++) {
+            a[i] = StdIn.readBoolean();
+        }
+        return a;
+    }
+
+    /**
+     * Print an array of booleans to standard output.
+     */
+    public static void print(boolean[] a) {
+        int N = a.length;
+        StdOut.println(N);
+        for (int i = 0; i < N; i++) {
+            if (a[i]) StdOut.print("1 ");
+            else      StdOut.print("0 ");
+        }
+        StdOut.println();
+    }
+
+    /**
+     * Read in and return an M-by-N array of booleans from standard input.
+     */
+    public static boolean[][] readBoolean2D() {
+        int M = StdIn.readInt();
+        int N = StdIn.readInt();
+        boolean[][] a = new boolean[M][N];
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                a[i][j] = StdIn.readBoolean();
+            }
+        }
+        return a;
+    }
+
+   /**
+     * Print the  M-by-N array of booleans to standard output.
+     */
+    public static void print(boolean[][] a) {
+        int M = a.length;
+        int N = a[0].length;
+        StdOut.println(M + " " + N);
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                if (a[i][j]) StdOut.print("1 ");
+                else         StdOut.print("0 ");
+            }
+            StdOut.println();
+        }
+    }
+
+
+   /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+
+        // read and print an array of doubles
+        double[] a = StdArrayIO.readDouble1D();
+        StdArrayIO.print(a);
+        StdOut.println();
+
+        // read and print a matrix of doubles
+        double[][] b = StdArrayIO.readDouble2D();
+        StdArrayIO.print(b);
+        StdOut.println();
+
+        // read and print a matrix of doubles
+        boolean[][] d = StdArrayIO.readBoolean2D();
+        StdArrayIO.print(d);
+        StdOut.println();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdAudio.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdAudio.java
new file mode 100644
index 000000000..0b85265b8
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdAudio.java
@@ -0,0 +1,282 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac StdAudio.java
+ *  Execution:    java StdAudio
+ *  
+ *  Simple library for reading, writing, and manipulating .wav files.
+
+ *
+ *  Limitations
+ *  -----------
+ *    - Does not seem to work properly when reading .wav files from a .jar file.
+ *    - Assumes the audio is monaural, with sampling rate of 44,100.
+ *
+ *************************************************************************/
+
+import java.applet.*;
+import java.io.*;
+import java.net.*;
+import javax.sound.sampled.*;
+
+/**
+ *  <i>Standard audio</i>. This class provides a basic capability for
+ *  creating, reading, and saving audio. 
+ *  <p>
+ *  The audio format uses a sampling rate of 44,100 (CD quality audio), 16-bit, monaural.
+ *
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdAudio {
+
+    /**
+     *  The sample rate - 44,100 Hz for CD quality audio.
+     */
+    public static final int SAMPLE_RATE = 44100;
+
+    private static final int BYTES_PER_SAMPLE = 2;                // 16-bit audio
+    private static final int BITS_PER_SAMPLE = 16;                // 16-bit audio
+    private static final double MAX_16_BIT = Short.MAX_VALUE;     // 32,767
+    private static final int SAMPLE_BUFFER_SIZE = 4096;
+
+
+    private static SourceDataLine line;   // to play the sound
+    private static byte[] buffer;         // our internal buffer
+    private static int bufferSize = 0;    // number of samples currently in internal buffer
+
+    // do not instantiate
+    private StdAudio() { }
+
+   
+    // static initializer
+    static { init(); }
+
+    // open up an audio stream
+    private static void init() {
+        try {
+            // 44,100 samples per second, 16-bit audio, mono, signed PCM, little Endian
+            AudioFormat format = new AudioFormat((float) SAMPLE_RATE, BITS_PER_SAMPLE, 1, true, false);
+            DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
+
+            line = (SourceDataLine) AudioSystem.getLine(info);
+            line.open(format, SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE);
+            
+            // the internal buffer is a fraction of the actual buffer size, this choice is arbitrary
+            // it gets divided because we can't expect the buffered data to line up exactly with when
+            // the sound card decides to push out its samples.
+            buffer = new byte[SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE/3];
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+            System.exit(1);
+        }
+
+        // no sound gets made before this call
+        line.start();
+    }
+
+
+    /**
+     * Close standard audio.
+     */
+    public static void close() {
+        line.drain();
+        line.stop();
+    }
+    
+    /**
+     * Write one sample (between -1.0 and +1.0) to standard audio. If the sample
+     * is outside the range, it will be clipped.
+     */
+    public static void play(double in) {
+
+        // clip if outside [-1, +1]
+        if (in < -1.0) in = -1.0;
+        if (in > +1.0) in = +1.0;
+
+        // convert to bytes
+        short s = (short) (MAX_16_BIT * in);
+        buffer[bufferSize++] = (byte) s;
+        buffer[bufferSize++] = (byte) (s >> 8);   // little Endian
+
+        // send to sound card if buffer is full        
+        if (bufferSize >= buffer.length) {
+            line.write(buffer, 0, buffer.length);
+            bufferSize = 0;
+        }
+    }
+
+    /**
+     * Write an array of samples (between -1.0 and +1.0) to standard audio. If a sample
+     * is outside the range, it will be clipped.
+     */
+    public static void play(double[] input) {
+        for (int i = 0; i < input.length; i++) {
+            play(input[i]);
+        }
+    }
+
+    /**
+     * Read audio samples from a file (in .wav or .au format) and return them as a double array
+     * with values between -1.0 and +1.0.
+     */
+    public static double[] read(String filename) {
+        byte[] data = readByte(filename);
+        int N = data.length;
+        double[] d = new double[N/2];
+        for (int i = 0; i < N/2; i++) {
+            d[i] = ((short) (((data[2*i+1] & 0xFF) << 8) + (data[2*i] & 0xFF))) / ((double) MAX_16_BIT);
+        }
+        return d;
+    }
+
+
+
+
+    /**
+     * Play a sound file (in .wav, .mid, or .au format) in a background thread.
+     */
+    public static void play(String filename) {
+        URL url = null;
+        try {
+            File file = new File(filename);
+            if (file.canRead()) url = file.toURI().toURL();
+        }
+        catch (MalformedURLException e) { e.printStackTrace(); }
+        // URL url = StdAudio.class.getResource(filename);
+        if (url == null) throw new RuntimeException("audio " + filename + " not found");
+        AudioClip clip = Applet.newAudioClip(url);
+        clip.play();
+    }
+
+    /**
+     * Loop a sound file (in .wav, .mid, or .au format) in a background thread.
+     */
+    public static void loop(String filename) {
+        URL url = null;
+        try {
+            File file = new File(filename);
+            if (file.canRead()) url = file.toURI().toURL();
+        }
+        catch (MalformedURLException e) { e.printStackTrace(); }
+        // URL url = StdAudio.class.getResource(filename);
+        if (url == null) throw new RuntimeException("audio " + filename + " not found");
+        AudioClip clip = Applet.newAudioClip(url);
+        clip.loop();
+    }
+
+
+    // return data as a byte array
+    private static byte[] readByte(String filename) {
+        byte[] data = null;
+        AudioInputStream ais = null;
+        try {
+
+            // try to read from file
+            File file = new File(filename);
+            if (file.exists()) {
+                ais = AudioSystem.getAudioInputStream(file);
+                data = new byte[ais.available()];
+                ais.read(data);
+            }
+
+            // try to read from URL
+            else {
+                URL url = StdAudio.class.getResource(filename);
+                ais = AudioSystem.getAudioInputStream(url);
+                data = new byte[ais.available()];
+                ais.read(data);
+            }
+        }
+        catch (Exception e) {
+            System.out.println(e.getMessage());
+            throw new RuntimeException("Could not read " + filename);
+        }
+
+        return data;
+    }
+
+
+
+    /**
+     * Save the double array as a sound file (using .wav or .au format).
+     */
+    public static void save(String filename, double[] input) {
+
+        // assumes 44,100 samples per second
+        // use 16-bit audio, mono, signed PCM, little Endian
+        AudioFormat format = new AudioFormat(SAMPLE_RATE, 16, 1, true, false);
+        byte[] data = new byte[2 * input.length];
+        for (int i = 0; i < input.length; i++) {
+            int temp = (short) (input[i] * MAX_16_BIT);
+            data[2*i + 0] = (byte) temp;
+            data[2*i + 1] = (byte) (temp >> 8);
+        }
+
+        // now save the file
+        try {
+            ByteArrayInputStream bais = new ByteArrayInputStream(data);
+            AudioInputStream ais = new AudioInputStream(bais, format, input.length);
+            if (filename.endsWith(".wav") || filename.endsWith(".WAV")) {
+                AudioSystem.write(ais, AudioFileFormat.Type.WAVE, new File(filename));
+            }
+            else if (filename.endsWith(".au") || filename.endsWith(".AU")) {
+                AudioSystem.write(ais, AudioFileFormat.Type.AU, new File(filename));
+            }
+            else {
+                throw new RuntimeException("File format not supported: " + filename);
+            }
+        }
+        catch (Exception e) {
+            System.out.println(e);
+            System.exit(1);
+        }
+    }
+
+
+
+
+   /***********************************************************************
+    * sample test client
+    ***********************************************************************/
+
+    // create a note (sine wave) of the given frequency (Hz), for the given
+    // duration (seconds) scaled to the given volume (amplitude)
+    private static double[] note(double hz, double duration, double amplitude) {
+        int N = (int) (StdAudio.SAMPLE_RATE * duration);
+        double[] a = new double[N+1];
+        for (int i = 0; i <= N; i++)
+            a[i] = amplitude * Math.sin(2 * Math.PI * i * hz / StdAudio.SAMPLE_RATE);
+        return a;
+    }
+
+    /**
+     * Test client - play an A major scale to standard audio.
+     */
+    public static void main(String[] args) {
+        
+        // 440 Hz for 1 sec
+        double freq = 440.0;
+        for (int i = 0; i <= StdAudio.SAMPLE_RATE; i++) {
+            StdAudio.play(0.5 * Math.sin(2*Math.PI * freq * i / StdAudio.SAMPLE_RATE));
+        }
+        
+        // scale increments
+        int[] steps = { 0, 2, 4, 5, 7, 9, 11, 12 };
+        for (int i = 0; i < steps.length; i++) {
+            double hz = 440.0 * Math.pow(2, steps[i] / 12.0);
+            StdAudio.play(note(hz, 1.0, 0.5));
+        }
+
+
+        // need to call this in non-interactive stuff so the program doesn't terminate
+        // until all the sound leaves the speaker.
+        StdAudio.close(); 
+
+        // need to terminate a Java program with sound
+        System.exit(0);
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdDraw.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdDraw.java
new file mode 100644
index 000000000..582ee78db
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdDraw.java
@@ -0,0 +1,1119 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac StdDraw.java
+ *  Execution:    java StdDraw
+ *
+ *  Standard drawing library. This class provides a basic capability for
+ *  creating drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *
+ *  Todo
+ *  ----
+ *    -  Add support for gradient fill, etc.
+ *
+ *  Remarks
+ *  -------
+ *    -  don't use AffineTransform for rescaling since it inverts
+ *       images and strings
+ *    -  careful using setFont in inner loop within an animation -
+ *       it can cause flicker
+ *
+ *************************************************************************/
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import java.io.*;
+import java.net.*;
+import java.util.LinkedList;
+import java.util.TreeSet;
+import javax.imageio.ImageIO;
+import javax.swing.*;
+
+/**
+ *  <i>Standard draw</i>. This class provides a basic capability for
+ *  creating drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdDraw implements ActionListener, MouseListener, MouseMotionListener, KeyListener {
+
+    // pre-defined colors
+    public static final Color BLACK      = Color.BLACK;
+    public static final Color BLUE       = Color.BLUE;
+    public static final Color CYAN       = Color.CYAN;
+    public static final Color DARK_GRAY  = Color.DARK_GRAY;
+    public static final Color GRAY       = Color.GRAY;
+    public static final Color GREEN      = Color.GREEN;
+    public static final Color LIGHT_GRAY = Color.LIGHT_GRAY;
+    public static final Color MAGENTA    = Color.MAGENTA;
+    public static final Color ORANGE     = Color.ORANGE;
+    public static final Color PINK       = Color.PINK;
+    public static final Color RED        = Color.RED;
+    public static final Color WHITE      = Color.WHITE;
+    public static final Color YELLOW     = Color.YELLOW;
+
+    /**
+     * Shade of blue used in Introduction to Programming in Java.
+     * It is Pantone 300U. The RGB values are approximately (9, 90, 166).
+     */
+    public static final Color BOOK_BLUE       = new Color(  9,  90, 166);
+    public static final Color BOOK_LIGHT_BLUE = new Color(103, 198, 243);
+
+    /**
+     * Shade of red used in Algorithms 4th edition.
+     * It is Pantone 1805U. The RGB values are approximately (150, 35, 31).
+     */
+    public static final Color BOOK_RED = new Color(150, 35, 31);
+
+    // default colors
+    private static final Color DEFAULT_PEN_COLOR   = BLACK;
+    private static final Color DEFAULT_CLEAR_COLOR = WHITE;
+
+    // current pen color
+    private static Color penColor;
+
+    // default canvas size is DEFAULT_SIZE-by-DEFAULT_SIZE
+    private static final int DEFAULT_SIZE = 512;
+    private static int width  = DEFAULT_SIZE;
+    private static int height = DEFAULT_SIZE;
+
+    // default pen radius
+    private static final double DEFAULT_PEN_RADIUS = 0.002;
+
+    // current pen radius
+    private static double penRadius;
+
+    // show we draw immediately or wait until next show?
+    private static boolean defer = false;
+
+    // boundary of drawing canvas, 5% border
+    private static final double BORDER = 0.05;
+    private static final double DEFAULT_XMIN = 0.0;
+    private static final double DEFAULT_XMAX = 1.0;
+    private static final double DEFAULT_YMIN = 0.0;
+    private static final double DEFAULT_YMAX = 1.0;
+    private static double xmin, ymin, xmax, ymax;
+
+    // for synchronization
+    private static Object mouseLock = new Object();
+    private static Object keyLock = new Object();
+
+    // default font
+    private static final Font DEFAULT_FONT = new Font("SansSerif", Font.PLAIN, 16);
+
+    // current font
+    private static Font font;
+
+    // double buffered graphics
+    private static BufferedImage offscreenImage, onscreenImage;
+    private static Graphics2D offscreen, onscreen;
+
+    // singleton for callbacks: avoids generation of extra .class files
+    private static StdDraw std = new StdDraw();
+
+    // the frame for drawing to the screen
+    private static JFrame frame;
+
+    // mouse state
+    private static boolean mousePressed = false;
+    private static double mouseX = 0;
+    private static double mouseY = 0;
+
+    // queue of typed key characters
+    private static LinkedList<Character> keysTyped = new LinkedList<Character>();
+
+    // set of key codes currently pressed down
+    private static TreeSet<Integer> keysDown = new TreeSet<Integer>();
+  
+
+    // singleton pattern: client can't instantiate
+    private StdDraw() { }
+
+
+    // static initializer
+    static { init(); }
+
+    /**
+     * Set the window size to the default size 512-by-512 pixels.
+     */
+    public static void setCanvasSize() {
+        setCanvasSize(DEFAULT_SIZE, DEFAULT_SIZE);
+    }
+
+    /**
+     * Set the window size to w-by-h pixels.
+     *
+     * @param w the width as a number of pixels
+     * @param h the height as a number of pixels
+     * @throws a IllegalArgumentException if the width or height is 0 or negative
+     */
+    public static void setCanvasSize(int w, int h) {
+        if (w < 1 || h < 1) throw new IllegalArgumentException("width and height must be positive");
+        width = w;
+        height = h;
+        init();
+    }
+
+    // init
+    private static void init() {
+        if (frame != null) frame.setVisible(false);
+        frame = new JFrame();
+        offscreenImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        onscreenImage  = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        offscreen = offscreenImage.createGraphics();
+        onscreen  = onscreenImage.createGraphics();
+        setXscale();
+        setYscale();
+        offscreen.setColor(DEFAULT_CLEAR_COLOR);
+        offscreen.fillRect(0, 0, width, height);
+        setPenColor();
+        setPenRadius();
+        setFont();
+        clear();
+
+        // add antialiasing
+        RenderingHints hints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
+                                                  RenderingHints.VALUE_ANTIALIAS_ON);
+        hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+        offscreen.addRenderingHints(hints);
+
+        // frame stuff
+        ImageIcon icon = new ImageIcon(onscreenImage);
+        JLabel draw = new JLabel(icon);
+
+        draw.addMouseListener(std);
+        draw.addMouseMotionListener(std);
+
+        frame.setContentPane(draw);
+        frame.addKeyListener(std);    // JLabel cannot get keyboard focus
+        frame.setResizable(false);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            // closes all windows
+        // frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);      // closes only current window
+        frame.setTitle("Standard Draw");
+        frame.setJMenuBar(createMenuBar());
+        frame.pack();
+        frame.requestFocusInWindow();
+        frame.setVisible(true);
+    }
+
+    // create the menu bar (changed to private)
+    private static JMenuBar createMenuBar() {
+        JMenuBar menuBar = new JMenuBar();
+        JMenu menu = new JMenu("File");
+        menuBar.add(menu);
+        JMenuItem menuItem1 = new JMenuItem(" Save...   ");
+        menuItem1.addActionListener(std);
+        menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+        menu.add(menuItem1);
+        return menuBar;
+    }
+
+
+   /*************************************************************************
+    *  User and screen coordinate systems
+    *************************************************************************/
+
+    /**
+     * Set the x-scale to be the default (between 0.0 and 1.0).
+     */
+    public static void setXscale() { setXscale(DEFAULT_XMIN, DEFAULT_XMAX); }
+
+    /**
+     * Set the y-scale to be the default (between 0.0 and 1.0).
+     */
+    public static void setYscale() { setYscale(DEFAULT_YMIN, DEFAULT_YMAX); }
+
+    /**
+     * Set the x-scale (a 10% border is added to the values)
+     * @param min the minimum value of the x-scale
+     * @param max the maximum value of the x-scale
+     */
+    public static void setXscale(double min, double max) {
+        double size = max - min;
+        synchronized (mouseLock) {
+            xmin = min - BORDER * size;
+            xmax = max + BORDER * size;
+        }
+    }
+
+    /**
+     * Set the y-scale (a 10% border is added to the values).
+     * @param min the minimum value of the y-scale
+     * @param max the maximum value of the y-scale
+     */
+    public static void setYscale(double min, double max) {
+        double size = max - min;
+        synchronized (mouseLock) {
+            ymin = min - BORDER * size;
+            ymax = max + BORDER * size;
+        }
+    }
+
+    /**
+     * Set the x-scale and y-scale (a 10% border is added to the values)
+     * @param min the minimum value of the x- and y-scales
+     * @param max the maximum value of the x- and y-scales
+     */
+    public static void setScale(double min, double max) {
+        double size = max - min;
+        synchronized (mouseLock) {
+            xmin = min - BORDER * size;
+            xmax = max + BORDER * size;
+            ymin = min - BORDER * size;
+            ymax = max + BORDER * size;
+        }
+    }
+
+    // helper functions that scale from user coordinates to screen coordinates and back
+    private static double  scaleX(double x) { return width  * (x - xmin) / (xmax - xmin); }
+    private static double  scaleY(double y) { return height * (ymax - y) / (ymax - ymin); }
+    private static double factorX(double w) { return w * width  / Math.abs(xmax - xmin);  }
+    private static double factorY(double h) { return h * height / Math.abs(ymax - ymin);  }
+    private static double   userX(double x) { return xmin + x * (xmax - xmin) / width;    }
+    private static double   userY(double y) { return ymax - y * (ymax - ymin) / height;   }
+
+
+    /**
+     * Clear the screen to the default color (white).
+     */
+    public static void clear() { clear(DEFAULT_CLEAR_COLOR); }
+    /**
+     * Clear the screen to the given color.
+     * @param color the Color to make the background
+     */
+    public static void clear(Color color) {
+        offscreen.setColor(color);
+        offscreen.fillRect(0, 0, width, height);
+        offscreen.setColor(penColor);
+        draw();
+    }
+
+    /**
+     * Get the current pen radius.
+     */
+    public static double getPenRadius() { return penRadius; }
+
+    /**
+     * Set the pen size to the default (.002).
+     */
+    public static void setPenRadius() { setPenRadius(DEFAULT_PEN_RADIUS); }
+    /**
+     * Set the radius of the pen to the given size.
+     * @param r the radius of the pen
+     * @throws IllegalArgumentException if r is negative
+     */
+    public static void setPenRadius(double r) {
+        if (r < 0) throw new IllegalArgumentException("pen radius must be nonnegative");
+        penRadius = r;
+        float scaledPenRadius = (float) (r * DEFAULT_SIZE);
+        BasicStroke stroke = new BasicStroke(scaledPenRadius, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
+        // BasicStroke stroke = new BasicStroke(scaledPenRadius);
+        offscreen.setStroke(stroke);
+    }
+
+    /**
+     * Get the current pen color.
+     */
+    public static Color getPenColor() { return penColor; }
+
+    /**
+     * Set the pen color to the default color (black).
+     */
+    public static void setPenColor() { setPenColor(DEFAULT_PEN_COLOR); }
+
+    /**
+     * Set the pen color to the given color. The available pen colors are
+     * BLACK, BLUE, CYAN, DARK_GRAY, GRAY, GREEN, LIGHT_GRAY, MAGENTA,
+     * ORANGE, PINK, RED, WHITE, and YELLOW.
+     * @param color the Color to make the pen
+     */
+    public static void setPenColor(Color color) {
+        penColor = color;
+        offscreen.setColor(penColor);
+    }
+
+    /**
+     * Set the pen color to the given RGB color.
+     * @param red the amount of red (between 0 and 255)
+     * @param green the amount of green (between 0 and 255)
+     * @param blue the amount of blue (between 0 and 255)
+     * @throws IllegalArgumentException if the amount of red, green, or blue are outside prescribed range
+     */
+    public static void setPenColor(int red, int green, int blue) {
+        if (red   < 0 || red   >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (green < 0 || green >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (blue  < 0 || blue  >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        setPenColor(new Color(red, green, blue));
+    }
+
+    /**
+     * Get the current font.
+     */
+    public static Font getFont() { return font; }
+
+    /**
+     * Set the font to the default font (sans serif, 16 point).
+     */
+    public static void setFont() { setFont(DEFAULT_FONT); }
+
+    /**
+     * Set the font to the given value.
+     * @param f the font to make text
+     */
+    public static void setFont(Font f) { font = f; }
+
+
+   /*************************************************************************
+    *  Drawing geometric shapes.
+    *************************************************************************/
+
+    /**
+     * Draw a line from (x0, y0) to (x1, y1).
+     * @param x0 the x-coordinate of the starting point
+     * @param y0 the y-coordinate of the starting point
+     * @param x1 the x-coordinate of the destination point
+     * @param y1 the y-coordinate of the destination point
+     */
+    public static void line(double x0, double y0, double x1, double y1) {
+        offscreen.draw(new Line2D.Double(scaleX(x0), scaleY(y0), scaleX(x1), scaleY(y1)));
+        draw();
+    }
+
+    /**
+     * Draw one pixel at (x, y).
+     * @param x the x-coordinate of the pixel
+     * @param y the y-coordinate of the pixel
+     */
+    private static void pixel(double x, double y) {
+        offscreen.fillRect((int) Math.round(scaleX(x)), (int) Math.round(scaleY(y)), 1, 1);
+    }
+
+    /**
+     * Draw a point at (x, y).
+     * @param x the x-coordinate of the point
+     * @param y the y-coordinate of the point
+     */
+    public static void point(double x, double y) {
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double r = penRadius;
+        float scaledPenRadius = (float) (r * DEFAULT_SIZE);
+
+        // double ws = factorX(2*r);
+        // double hs = factorY(2*r);
+        // if (ws <= 1 && hs <= 1) pixel(x, y);
+        if (scaledPenRadius <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - scaledPenRadius/2, ys - scaledPenRadius/2,
+                                                 scaledPenRadius, scaledPenRadius));
+        draw();
+    }
+
+    /**
+     * Draw a circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws IllegalArgumentException if the radius of the circle is negative
+     */
+    public static void circle(double x, double y, double r) {
+        if (r < 0) throw new IllegalArgumentException("circle radius must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw filled circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws IllegalArgumentException if the radius of the circle is negative
+     */
+    public static void filledCircle(double x, double y, double r) {
+        if (r < 0) throw new IllegalArgumentException("circle radius must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws IllegalArgumentException if either of the axes are negative
+     */
+    public static void ellipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (semiMajorAxis < 0) throw new IllegalArgumentException("ellipse semimajor axis must be nonnegative");
+        if (semiMinorAxis < 0) throw new IllegalArgumentException("ellipse semiminor axis must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws IllegalArgumentException if either of the axes are negative
+     */
+    public static void filledEllipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (semiMajorAxis < 0) throw new IllegalArgumentException("ellipse semimajor axis must be nonnegative");
+        if (semiMinorAxis < 0) throw new IllegalArgumentException("ellipse semiminor axis must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw an arc of radius r, centered on (x, y), from angle1 to angle2 (in degrees).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @param angle1 the starting angle. 0 would mean an arc beginning at 3 o'clock.
+     * @param angle2 the angle at the end of the arc. For example, if
+     *        you want a 90 degree arc, then angle2 should be angle1 + 90.
+     * @throws IllegalArgumentException if the radius of the circle is negative
+     */
+    public static void arc(double x, double y, double r, double angle1, double angle2) {
+        if (r < 0) throw new IllegalArgumentException("arc radius must be nonnegative");
+        while (angle2 < angle1) angle2 += 360;
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Arc2D.Double(xs - ws/2, ys - hs/2, ws, hs, angle1, angle2 - angle1, Arc2D.OPEN));
+        draw();
+    }
+
+    /**
+     * Draw a square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws IllegalArgumentException if r is negative
+     */
+    public static void square(double x, double y, double r) {
+        if (r < 0) throw new IllegalArgumentException("square side length must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws IllegalArgumentException if r is negative
+     */
+    public static void filledSquare(double x, double y, double r) {
+        if (r < 0) throw new IllegalArgumentException("square side length must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw a rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws IllegalArgumentException if halfWidth or halfHeight is negative
+     */
+    public static void rectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (halfWidth  < 0) throw new IllegalArgumentException("half width must be nonnegative");
+        if (halfHeight < 0) throw new IllegalArgumentException("half height must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws IllegalArgumentException if halfWidth or halfHeight is negative
+     */
+    public static void filledRectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (halfWidth  < 0) throw new IllegalArgumentException("half width must be nonnegative");
+        if (halfHeight < 0) throw new IllegalArgumentException("half height must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw a polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public static void polygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.draw(path);
+        draw();
+    }
+
+    /**
+     * Draw a filled polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public static void filledPolygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.fill(path);
+        draw();
+    }
+
+
+
+   /*************************************************************************
+    *  Drawing images.
+    *************************************************************************/
+
+    // get an image from the given filename
+    private static Image getImage(String filename) {
+
+        // to read from file
+        ImageIcon icon = new ImageIcon(filename);
+
+        // try to read from URL
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            try {
+                URL url = new URL(filename);
+                icon = new ImageIcon(url);
+            } catch (Exception e) { /* not a url */ }
+        }
+
+        // in case file is inside a .jar
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            URL url = StdDraw.class.getResource(filename);
+            if (url == null) throw new IllegalArgumentException("image " + filename + " not found");
+            icon = new ImageIcon(url);
+        }
+
+        return icon.getImage();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y).
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y),
+     * rotated given number of degrees
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s, double degrees) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rescaled to w-by-h.
+     * @param x the center x coordinate of the image
+     * @param y the center y coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @throws IllegalArgumentException if the width height are negative
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s, double w, double h) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        if (w < 0) throw new IllegalArgumentException("width is negative: " + w);
+        if (h < 0) throw new IllegalArgumentException("height is negative: " + h);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else {
+            offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                       (int) Math.round(ys - hs/2.0),
+                                       (int) Math.round(ws),
+                                       (int) Math.round(hs), null);
+        }
+        draw();
+    }
+
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rotated
+     * given number of degrees, rescaled to w-by-h.
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s, double w, double h, double degrees) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                   (int) Math.round(ys - hs/2.0),
+                                   (int) Math.round(ws),
+                                   (int) Math.round(hs), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+
+   /*************************************************************************
+    *  Drawing text.
+    *************************************************************************/
+
+    /**
+     * Write the given text string in the current font, centered on (x, y).
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     */
+    public static void text(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs - ws/2.0), (float) (ys + hs));
+        draw();
+    }
+
+    /**
+     * Write the given text string in the current font, centered on (x, y) and
+     * rotated by the specified number of degrees  
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     * @param degrees is the number of degrees to rotate counterclockwise
+     */
+    public static void text(double x, double y, String s, double degrees) {
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        text(x, y, s);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+    }
+
+
+    /**
+     * Write the given text string in the current font, left-aligned at (x, y).
+     * @param x the x-coordinate of the text
+     * @param y the y-coordinate of the text
+     * @param s the text
+     */
+    public static void textLeft(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs), (float) (ys + hs));
+        draw();
+    }
+
+    /**
+     * Write the given text string in the current font, right-aligned at (x, y).
+     * @param x the x-coordinate of the text
+     * @param y the y-coordinate of the text
+     * @param s the text
+     */
+    public static void textRight(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs - ws), (float) (ys + hs));
+        draw();
+    }
+
+
+
+    /**
+     * Display on screen, pause for t milliseconds, and turn on
+     * <em>animation mode</em>: subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will not be displayed on screen until the next call to <tt>show()</tt>.
+     * This is useful for producing animations (clear the screen, draw a bunch of shapes,
+     * display on screen for a fixed amount of time, and repeat). It also speeds up
+     * drawing a huge number of shapes (call <tt>show(0)</tt> to defer drawing
+     * on screen, draw the shapes, and call <tt>show(0)</tt> to display them all
+     * on screen at once).
+     * @param t number of milliseconds
+     */
+    public static void show(int t) {
+        defer = false;
+        draw();
+        try { Thread.sleep(t); }
+        catch (InterruptedException e) { System.out.println("Error sleeping"); }
+        defer = true;
+    }
+
+    /**
+     * Display on-screen and turn off animation mode:
+     * subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will be displayed on screen when called. This is the default.
+     */
+    public static void show() {
+        defer = false;
+        draw();
+    }
+
+    // draw onscreen if defer is false
+    private static void draw() {
+        if (defer) return;
+        onscreen.drawImage(offscreenImage, 0, 0, null);
+        frame.repaint();
+    }
+
+
+   /*************************************************************************
+    *  Save drawing to a file.
+    *************************************************************************/
+
+    /**
+     * Save onscreen image to file - suffix must be png, jpg, or gif.
+     * @param filename the name of the file with one of the required suffixes
+     */
+    public static void save(String filename) {
+        File file = new File(filename);
+        String suffix = filename.substring(filename.lastIndexOf('.') + 1);
+
+        // png files
+        if (suffix.toLowerCase().equals("png")) {
+            try { ImageIO.write(onscreenImage, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        // need to change from ARGB to RGB for jpeg
+        // reference: http://archives.java.sun.com/cgi-bin/wa?A2=ind0404&L=java2d-interest&D=0&P=2727
+        else if (suffix.toLowerCase().equals("jpg")) {
+            WritableRaster raster = onscreenImage.getRaster();
+            WritableRaster newRaster;
+            newRaster = raster.createWritableChild(0, 0, width, height, 0, 0, new int[] {0, 1, 2});
+            DirectColorModel cm = (DirectColorModel) onscreenImage.getColorModel();
+            DirectColorModel newCM = new DirectColorModel(cm.getPixelSize(),
+                                                          cm.getRedMask(),
+                                                          cm.getGreenMask(),
+                                                          cm.getBlueMask());
+            BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false,  null);
+            try { ImageIO.write(rgbBuffer, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        else {
+            System.out.println("Invalid image file type: " + suffix);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void actionPerformed(ActionEvent e) {
+        FileDialog chooser = new FileDialog(StdDraw.frame, "Use a .png or .jpg extension", FileDialog.SAVE);
+        chooser.setVisible(true);
+        String filename = chooser.getFile();
+        if (filename != null) {
+            StdDraw.save(chooser.getDirectory() + File.separator + chooser.getFile());
+        }
+    }
+
+
+   /*************************************************************************
+    *  Mouse interactions.
+    *************************************************************************/
+
+    /**
+     * Is the mouse being pressed?
+     * @return true or false
+     */
+    public static boolean mousePressed() {
+        synchronized (mouseLock) {
+            return mousePressed;
+        }
+    }
+
+    /**
+     * What is the x-coordinate of the mouse?
+     * @return the value of the x-coordinate of the mouse
+     */
+    public static double mouseX() {
+        synchronized (mouseLock) {
+            return mouseX;
+        }
+    }
+
+    /**
+     * What is the y-coordinate of the mouse?
+     * @return the value of the y-coordinate of the mouse
+     */
+    public static double mouseY() {
+        synchronized (mouseLock) {
+            return mouseY;
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseClicked(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseEntered(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseExited(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mousePressed(MouseEvent e) {
+        synchronized (mouseLock) {
+            mouseX = StdDraw.userX(e.getX());
+            mouseY = StdDraw.userY(e.getY());
+            mousePressed = true;
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseReleased(MouseEvent e) {
+        synchronized (mouseLock) {
+            mousePressed = false;
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseDragged(MouseEvent e)  {
+        synchronized (mouseLock) {
+            mouseX = StdDraw.userX(e.getX());
+            mouseY = StdDraw.userY(e.getY());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseMoved(MouseEvent e) {
+        synchronized (mouseLock) {
+            mouseX = StdDraw.userX(e.getX());
+            mouseY = StdDraw.userY(e.getY());
+        }
+    }
+
+
+   /*************************************************************************
+    *  Keyboard interactions.
+    *************************************************************************/
+
+    /**
+     * Has the user typed a key?
+     * @return true if the user has typed a key, false otherwise
+     */
+    public static boolean hasNextKeyTyped() {
+        synchronized (keyLock) {
+            return !keysTyped.isEmpty();
+        }
+    }
+
+    /**
+     * What is the next key that was typed by the user? This method returns
+     * a Unicode character corresponding to the key typed (such as 'a' or 'A').
+     * It cannot identify action keys (such as F1
+     * and arrow keys) or modifier keys (such as control).
+     * @return the next Unicode key typed
+     */
+    public static char nextKeyTyped() {
+        synchronized (keyLock) {
+            return keysTyped.removeLast();
+        }
+    }
+
+    /**
+     * Is the keycode currently being pressed? This method takes as an argument
+     * the keycode (corresponding to a physical key). It can handle action keys
+     * (such as F1 and arrow keys) and modifier keys (such as shift and control).
+     * See <a href = "http://download.oracle.com/javase/6/docs/api/java/awt/event/KeyEvent.html">KeyEvent.java</a>
+     * for a description of key codes.
+     * @return true if keycode is currently being pressed, false otherwise
+     */
+    public static boolean isKeyPressed(int keycode) {
+        synchronized (keyLock) {
+            return keysDown.contains(keycode);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyTyped(KeyEvent e) {
+        synchronized (keyLock) {
+            keysTyped.addFirst(e.getKeyChar());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyPressed(KeyEvent e) {
+        synchronized (keyLock) {
+            keysDown.add(e.getKeyCode());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyReleased(KeyEvent e) {
+        synchronized (keyLock) {
+            keysDown.remove(e.getKeyCode());
+        }
+    }
+
+
+
+
+    /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+        StdDraw.square(.2, .8, .1);
+        StdDraw.filledSquare(.8, .8, .2);
+        StdDraw.circle(.8, .2, .2);
+
+        StdDraw.setPenColor(StdDraw.BOOK_RED);
+        StdDraw.setPenRadius(.02);
+        StdDraw.arc(.8, .2, .1, 200, 45);
+
+        // draw a blue diamond
+        StdDraw.setPenRadius();
+        StdDraw.setPenColor(StdDraw.BOOK_BLUE);
+        double[] x = { .1, .2, .3, .2 };
+        double[] y = { .2, .3, .2, .1 };
+        StdDraw.filledPolygon(x, y);
+
+        // text
+        StdDraw.setPenColor(StdDraw.BLACK);
+        StdDraw.text(0.2, 0.5, "black text");
+        StdDraw.setPenColor(StdDraw.WHITE);
+        StdDraw.text(0.8, 0.8, "white text");
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdIn.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdIn.java
new file mode 100644
index 000000000..fa996bd72
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdIn.java
@@ -0,0 +1,345 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac StdIn.java
+ *  Execution:    java StdIn   (interactive test of basic functionality)
+ *
+ *  Reads in data of various types from standard input.
+ *
+ *************************************************************************/
+
+import java.util.Scanner;
+import java.util.NoSuchElementException;
+import java.util.regex.Pattern;
+
+/**
+ *  <i>Standard input</i>. This class provides methods for reading strings
+ *  and numbers from standard input. See 
+ *  <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *  <p>
+ *  See the technical information in the documentation of the {@link In}
+ *  class, which applies to this class as well. 
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdIn {
+
+    // it doesn't make sense to instantiate this class
+    private StdIn() {}
+
+    private static Scanner scanner;
+ 
+    /*** begin: section (1 of 2) of code duplicated from In to StdIn */
+    
+    // assume Unicode UTF-8 encoding
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with System.out.
+    private static final java.util.Locale usLocale = 
+        new java.util.Locale("en", "US");
+
+    // the default token separator; we maintain the invariant that this value 
+    // is held by the scanner's delimiter between calls
+    private static final Pattern WHITESPACE_PATTERN
+        = Pattern.compile("\\p{javaWhitespace}+");
+
+    // makes whitespace characters significant 
+    private static final Pattern EMPTY_PATTERN
+        = Pattern.compile("");
+
+    // used to read the entire input. source:
+    // http://weblogs.java.net/blog/pat/archive/2004/10/stupid_scanner_1.html
+    private static final Pattern EVERYTHING_PATTERN
+        = Pattern.compile("\\A");
+
+    /*** end: section (1 of 2) of code duplicated from In to StdIn */
+
+    public static void setString(String text) {
+        scanner.close(); // warning, this may close StdIn the first time!
+        setScanner(new Scanner(text));
+        position = 0;
+    }
+
+
+    /*** begin: section (2 of 2) of code duplicated from In to StdIn,
+      *  with all methods changed from "public" to "public static" ***/
+
+    /** How many characters have been read so far?
+     */
+    public static void savePosition() {
+        try {
+            position = scanner.match().end();
+        }
+        catch (IllegalStateException e) {
+            position = 0; // nothing has been read yet
+        }
+    }
+
+    public static int position = 0;
+
+   /**
+     * Is the input empty (except possibly for whitespace)? Use this
+     * to know whether the next call to {@link #readString()}, 
+     * {@link #readDouble()}, etc will succeed.
+     */
+    public static boolean isEmpty() {
+        return !scanner.hasNext();
+    }
+
+   /**
+     * Does the input have a next line? Use this to know whether the
+     * next call to {@link #readLine()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextChar()}.
+     */
+    public static boolean hasNextLine() {
+        return scanner.hasNextLine();
+    }
+
+    /**
+     * Is the input empty (including whitespace)? Use this to know 
+     * whether the next call to {@link #readChar()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextLine()}.
+     */
+    public static boolean hasNextChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        boolean result = scanner.hasNext();
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return result;
+    }
+
+
+   /**
+     * Read and return the next line.
+     */
+    public static String readLine() {
+        String line;
+        try                 { line = scanner.nextLine(); savePosition(); }
+        catch (Exception e) { line = null;               }
+        return line;
+    }
+
+    /**
+     * Read and return the next character.
+     */
+    public static char readChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        String ch = scanner.next();
+        assert (ch.length() == 1) : "Internal (Std)In.readChar() error!"
+            + " Please contact the authors.";
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        char result = ch.charAt(0);
+        savePosition();
+        return result;
+    }  
+
+
+   /**
+     * Read and return the remainder of the input as a string.
+     */
+    public static String readAll() {
+        if (!scanner.hasNextLine())
+            return "";
+
+        String result = scanner.useDelimiter(EVERYTHING_PATTERN).next();
+        // not that important to reset delimeter, since now scanner is empty
+        scanner.useDelimiter(WHITESPACE_PATTERN); // but let's do it anyway
+        savePosition();
+        return result;
+    }
+
+
+   /**
+     * Read and return the next string.
+     */
+    public static String readString() {
+        String result = scanner.next();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next int.
+     */
+    public static int readInt() {
+        int result = 0;
+        result = scanner.nextInt();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next double.
+     */
+    public static double readDouble() {
+        double result = scanner.nextDouble();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next float.
+     */
+    public static float readFloat() {
+        float result = scanner.nextFloat();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next long.
+     */
+    public static long readLong() {
+        long result = scanner.nextLong();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next short.
+     */
+    public static short readShort() {
+        short result = scanner.nextShort();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next byte.
+     */
+    public static byte readByte() {
+        byte result = scanner.nextByte();
+        savePosition();
+        return result;
+    }
+
+    /**
+     * Read and return the next boolean, allowing case-insensitive
+     * "true" or "1" for true, and "false" or "0" for false.
+     */
+    public static boolean readBoolean() {
+        String s = readString();
+        savePosition();
+        if (s.equalsIgnoreCase("true"))  return true;
+        if (s.equalsIgnoreCase("false")) return false;
+        if (s.equals("1"))               return true;
+        if (s.equals("0"))               return false;
+        throw new java.util.InputMismatchException();
+    }
+
+    /**
+     * Read all strings until the end of input is reached, and return them.
+     */
+    public static String[] readAllStrings() {
+        // we could use readAll.trim().split(), but that's not consistent
+        // since trim() uses characters 0x00..0x20 as whitespace
+        String[] tokens = WHITESPACE_PATTERN.split(readAll());
+        if (tokens.length == 0 || tokens[0].length() > 0)
+            return tokens;
+        String[] decapitokens = new String[tokens.length-1];
+        for (int i=0; i < tokens.length-1; i++)
+            decapitokens[i] = tokens[i+1];
+        savePosition();
+        return decapitokens;
+    }
+
+    /**
+     * Read all ints until the end of input is reached, and return them.
+     */
+    public static int[] readAllInts() {
+        String[] fields = readAllStrings();
+        int[] vals = new int[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Integer.parseInt(fields[i]);
+        savePosition();
+        return vals;
+    }
+
+    /**
+     * Read all doubles until the end of input is reached, and return them.
+     */
+    public static double[] readAllDoubles() {
+        String[] fields = readAllStrings();
+        double[] vals = new double[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Double.parseDouble(fields[i]);
+        savePosition();
+        return vals;
+    }
+    
+    /*** end: section (2 of 2) of code duplicated from In to StdIn */
+    
+    
+    /**
+     * If StdIn changes, use this to reinitialize the scanner.
+     */
+    private static void resync() {
+        setScanner(new Scanner(new java.io.BufferedInputStream(System.in), 
+                               charsetName));
+    }
+    
+    private static void setScanner(Scanner scanner) {
+        StdIn.scanner = scanner;
+        StdIn.scanner.useLocale(usLocale);
+        savePosition();
+    }
+
+    // do this once when StdIn is initialized
+    static {
+        resync();
+    }
+
+   /**
+     * Reads all ints from stdin.
+     * @deprecated For more consistency, use {@link #readAllInts()}
+     */
+    public static int[] readInts() {
+        return readAllInts();
+    }
+
+   /**
+     * Reads all doubles from stdin.
+     * @deprecated For more consistency, use {@link #readAllDoubles()}
+     */
+    public static double[] readDoubles() {
+        return readAllDoubles();
+    }
+
+   /**
+     * Reads all Strings from stdin.
+     * @deprecated For more consistency, use {@link #readAllStrings()}
+     */
+    public static String[] readStrings() {
+        return readAllStrings();
+    }
+
+
+    /**
+     * Interactive test of basic functionality.
+     */
+    public static void main(String[] args) {
+
+        System.out.println("Type a string: ");
+        String s = StdIn.readString();
+        System.out.println("Your string was: " + s);
+        System.out.println();
+
+        System.out.println("Type an int: ");
+        int a = StdIn.readInt();
+        System.out.println("Your int was: " + a);
+        System.out.println();
+
+        System.out.println("Type a boolean: ");
+        boolean b = StdIn.readBoolean();
+        System.out.println("Your boolean was: " + b);
+        System.out.println();
+
+        System.out.println("Type a double: ");
+        double c = StdIn.readDouble();
+        System.out.println("Your double was: " + c);
+        System.out.println();
+
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdInTest.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdInTest.java
new file mode 100644
index 000000000..b17c6e97d
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdInTest.java
@@ -0,0 +1,341 @@
+package stdlibpack;
+/**
+ * Test client for StdIn and In. 
+ **/
+
+import java.util.Scanner;
+import java.util.Arrays;
+import java.lang.reflect.Array;
+import java.lang.reflect.Method;
+import java.io.ByteArrayInputStream;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+public class StdInTest {
+    
+    // make a printable/readable version of an object
+    public static Object escape(Object original) {
+        if (original instanceof Character) {
+            char u = (char) ((Character)original);
+            int idx = "\b\t\n\f\r\"\'\\".indexOf(u);
+            if (idx >= 0)
+                return "\\"+"btnfr\"\'\\".charAt(idx);
+            if (u < 32) 
+                return "\\"+Integer.toOctalString(u);
+            if (u > 126) 
+                return "\\u"+String.format("%04X", (int)u);
+            return original;
+        }
+        else if (original instanceof String) {
+            StringBuilder result = new StringBuilder();
+            for (char c : ((String)original).toCharArray())
+                result.append(escape(c));
+            return "\"" + result.toString() + "\"";
+        }
+        else if (original.getClass().isArray()) {
+            StringBuilder result = new StringBuilder("[");
+            int len = Array.getLength(original);
+            for (int i=0; i<len; i++)
+                result.append(" ").append(escape(Array.get(original, i)));
+            return result.append("]").toString();
+        }
+        return original;
+    }
+    
+    public static boolean testStdIn;
+    
+    public static Method resyncMethod;
+    
+    public static boolean canResync() {
+        try {
+            resyncMethod = StdIn.class.getMethod("resync");
+        }
+        catch (NoSuchMethodException e) {
+            return false;
+        }
+        return true;
+    }
+    
+    public static int testCount = 0;
+
+    /**
+     * In the two methods below, each Object[] of "steps" is a length-2
+     * array: the first is a String holding a method name, the second
+     * is the expected return value when that method is called in sequence.
+     */
+    public static void test(String input, Object[][] steps) {
+        test(input, steps, false); // create Scanner from String
+        if (testStdIn)
+            test(input, steps, true);  // uses stdIn/System.setIn
+        testCount++;
+    }
+    
+    public static void test(String input, Object[][] steps, boolean useStdIn) {
+        In in = null;
+        if (useStdIn) {
+            try {
+                System.setIn(new ByteArrayInputStream(input.getBytes("UTF-8")));
+            }
+            catch (java.io.UnsupportedEncodingException e) {
+                throw new RuntimeException(e.toString());
+            }
+
+            // in order for this to work, you need to change resync to public
+            
+            try { //call StdIn.resync();
+                resyncMethod.invoke(null);
+            }
+            catch (IllegalAccessException e) {
+                throw new RuntimeException(e.toString());
+            }
+            catch (java.lang.reflect.InvocationTargetException e) {
+                throw new RuntimeException(e.toString());                   
+            }
+        }
+        else 
+            in = new In(new Scanner(input));
+
+        int count = 0;
+        for (Object[] step : steps) {
+            String cmd = (String)step[0];
+            Object expected = step[1];
+            Object result;
+            
+            String preamble = "Failed input %s\nStep %d (%s)\n";
+
+            try {
+                Method method;
+                // nice and easy since these methods take no arguments
+                if (useStdIn)
+                    method = StdIn.class.getMethod(cmd);
+                else
+                    method = in.getClass().getMethod(cmd);
+                result = method.invoke(in); // fine to be null for static
+            }
+            catch (NoSuchMethodException e) {
+                java.io.StringWriter errors = new java.io.StringWriter();
+                e.printStackTrace(new java.io.PrintWriter(errors));
+                throw new RuntimeException(String.format(preamble, 
+                                                         input, count, cmd) +
+                                           errors.toString());
+            }
+            catch (IllegalAccessException e) {
+                java.io.StringWriter errors = new java.io.StringWriter();
+                e.printStackTrace(new java.io.PrintWriter(errors));
+                throw new RuntimeException(String.format(preamble, 
+                                                         input, count, cmd) +
+                                           errors.toString());
+            }
+            catch (java.lang.reflect.InvocationTargetException e) {
+                java.io.StringWriter errors = new java.io.StringWriter();
+                e.printStackTrace(new java.io.PrintWriter(errors));
+                e.getCause().printStackTrace(new java.io.PrintWriter(errors));
+                throw new RuntimeException(String.format(preamble, 
+                                                         input, count, cmd) +
+                                           errors.toString());
+            }
+                        
+            if (expected.getClass().isArray()) {
+                if (!(result.getClass().isArray())) {
+                    StdOut.printf(preamble + "Expected array, got %s\n",
+                                  input, count, cmd, result);
+                    continue;
+                }
+                Object r = result, e = expected; // to shorten lines below
+                int rl = Array.getLength(r);
+                int el = Array.getLength(e);
+                if (el != rl)
+                    StdOut.printf(preamble + "Expected %d, got %d items:\n%s\n",
+                                  escape(input), count, cmd, el, rl, escape(r));
+                else for (int i=0; i<rl; i++) 
+                    if (!(Array.get(r, i).equals(Array.get(e, i)))) 
+                    StdOut.printf(preamble + "\nExpected [%d]=%s, got %s\n",
+                                  escape(input), count, cmd, i, 
+                                  escape(Array.get(e, i)), 
+                                  escape(Array.get(r, i)));
+            }
+            else if (!result.equals(expected)) {
+                StdOut.printf(preamble + "Expected %s, got %s\n",
+                              escape(input), count, cmd, escape(expected), 
+                              escape(result));
+            }
+            count++;
+        }
+    }
+    
+    public static void main(String[] args) {
+        testStdIn = canResync();
+        
+        if (testStdIn) 
+            StdOut.println("Note: any errors appear duplicated since tests run 2x.");
+        else 
+            StdOut.println("Note: StdIn.resync is private, only In will be tested.");
+
+        test("this is a test", 
+             new Object[][]{
+            {"isEmpty", false}, {"hasNextChar", true}, {"hasNextLine", true},
+            {"readAllStrings", new String[]{"this", "is", "a", "test"}},
+            {"isEmpty", true}, {"hasNextChar", false}, {"hasNextLine", false}
+        });
+        test("\n\n\n", 
+             new Object[][]{
+            {"isEmpty", true}, {"hasNextChar", true}, {"hasNextLine", true},
+            {"readAll", "\n\n\n"}
+        });
+        test("", 
+             new Object[][]{
+            {"isEmpty", true}, {"hasNextChar", false}, {"hasNextLine", false}
+        });
+        test("\t\t  \t\t", 
+             new Object[][]{
+            {"isEmpty", true}, {"hasNextChar", true}, {"hasNextLine", true},
+            {"readAll", "\t\t  \t\t"}
+        });
+        test("readLine consumes newline\nyeah!", 
+             new Object[][]{
+            {"readLine", "readLine consumes newline"}, {"readChar", 'y'}
+        });
+        test("readString doesn't consume spaces", 
+             new Object[][]{
+            {"readString", "readString"}, {"readChar", ' '}
+        });
+        test("\n\nblank lines test",
+             new Object[][]{
+            {"readLine", ""}, {"readLine", ""}, {"hasNextLine", true},
+            {"readLine", "blank lines test"}, {"hasNextLine", false}
+        });
+        test("   \n  \t \n  correct  \n\t\n\t .trim replacement \n\t",
+             new Object[][]{
+            {"readAllStrings", new String[]{"correct", ".trim", "replacement"}},
+            {"hasNextChar", false}
+        });
+        StringBuilder sb = new StringBuilder();
+        Object[][] expected = new Object[2000][2];
+        for (int i=0; i<1000; i++) {
+            sb.append((char)i);
+            sb.append((char)(i+8000)); // include weird non-breaking spaces
+            expected[2*i][0] = "readChar";
+            expected[2*i+1][0] = "readChar";
+            expected[2*i][1] = (char)i;
+            expected[2*i+1][1] = (char)(i+8000);
+        }
+        test(sb.toString(), expected);
+        test(" this \n and \that \n ",
+             new Object[][]{
+            {"readString", "this"}, {"readString", "and"}, {"readChar", ' '},
+            {"readString", "hat"}, {"readChar", ' '}, {"isEmpty", true},
+            {"hasNextLine", true}, {"readLine", ""}, {"readLine", " "}
+        });
+        test(" 1 2 3 \n\t 4 5 ",
+             new Object[][]{
+            {"readAllInts", new int[]{1, 2, 3, 4, 5}}
+        });
+        test(" 0 1 False true falsE True ",
+             new Object[][]{
+            {"readBoolean", false}, {"readBoolean", true}, 
+            {"readBoolean", false}, {"readBoolean", true}, 
+            {"readBoolean", false}, {"readBoolean", true}
+        });
+        test(" \240\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008"
+                 + "\u2009\u200A\u205F\u3000",
+             new Object[][]{
+            {"readString", "\240"},   // non-breaking space - not java whitespace
+            {"readString", "\u2007"}, // similarly
+            {"hasNextChar", true}, // there is some stuff left over
+            {"isEmpty", true},        // but it is all whitespace
+            {"readChar", '\u2008'}    // such as this one
+        });
+        
+        // line sep, par sep, NEL, unit sep, vtab --- first 3 are newlines
+        // NB: \205 is treated as a line separator, but not whitespace!
+        test("a\u2028b\u2029c\37d\13e\205f", 
+             new Object[][]{
+            {"readAllStrings", new String[]{"a", "b", "c", "d", "e\205f"}}
+        });
+        test("a\u2028b\u2029c\37d\13e\205f", 
+             new Object[][]{
+            {"readLine", "a"},
+            {"readLine", "b"},
+            {"readLine", "c\37d\13e"},
+            {"readLine", "f"}
+        });
+        test("\u2028\u2029", // line separator, par separator
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\n\n", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\r\n\r\n", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\n\r", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\r\n", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextChar", false}, {"hasNextLine", false}
+        });
+        test("3E4 \t -0.5 \n \t +4", 
+             new Object[][]{
+            {"readAllDoubles", new double[] {30000, -0.5, 4}}
+        });
+        test(" whitespace ", 
+             new Object[][]{
+            {"readString", "whitespace"}, {"readChar", ' '},
+            {"hasNextLine", false}
+        });
+        test(" whitespace \n", 
+             new Object[][]{
+            {"readString", "whitespace"}, {"readChar", ' '},
+            {"readLine", ""}, {"hasNextLine", false}
+        });
+        test(" whitespace \n ", 
+             new Object[][]{
+            {"readString", "whitespace"}, {"readChar", ' '},
+            {"readLine", ""}, {"hasNextLine", true},
+            {"readLine", " "}, {"hasNextLine", false}
+        });
+        test(" 34 -12983   3.25\n\t foo!",
+             new Object[][]{
+            {"readByte", (byte)34}, 
+            {"readShort", (short)-12983},
+            {"readDouble", 3.25},
+            {"readAll", "\n\t foo!"}
+        });
+        test("30000000000  3.5 3e4, foo   \t\t ya",
+             new Object[][]{
+            {"readLong", 30000000000L},
+            {"readFloat", (float)3.5},
+            {"readAllStrings", new String[]{"3e4,", "foo", "ya"}}
+        });
+        // testing consistency of whitespace and read(All)String(s)
+        test(" \u0001 foo \u0001 foo \u0001 foo",
+             new Object[][]{
+            {"readAllStrings", new String[]{
+                "\u0001", "foo", "\u0001", "foo", "\u0001", "foo"}}
+        });
+        test(" \u2005 foo \u2005 foo \u2005 foo",
+             new Object[][]{
+            {"readAllStrings", new String[]{"foo", "foo", "foo"}}
+        });
+        test(" \u0001 foo \u0001 foo \u0001 foo",
+             new Object[][]{
+            {"readString", "\u0001"}, {"readString", "foo"},
+            {"readString", "\u0001"}, {"readString", "foo"},
+            {"readString", "\u0001"}, {"readString", "foo"}
+        });
+        test(" \u2005 foo \u2005 foo \u2005 foo",
+             new Object[][]{
+            {"readString", "foo"}, {"readString", "foo"}, {"readString", "foo"}
+        });
+        StdOut.printf("Ran %d tests.\n", testCount);
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdOut.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdOut.java
new file mode 100644
index 000000000..7d546de32
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdOut.java
@@ -0,0 +1,236 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac StdOut.java
+ *  Execution:    java StdOut
+ *
+ *  Writes data of various types to standard output.
+ *
+ *************************************************************************/
+
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.io.UnsupportedEncodingException;
+import java.util.Locale;
+
+/**
+ *  <i>Standard output</i>. This class provides methods for writing strings
+ *  and numbers to standard output.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdOut {
+
+    // force Unicode UTF-8 encoding; otherwise it's system dependent
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with StdIn
+    private static final Locale US_LOCALE = new Locale("en", "US");
+
+    // send output here
+    private static PrintWriter out;
+
+    // this is called before invoking any methods
+    public static void resync() {
+        try {
+            out = new PrintWriter(new OutputStreamWriter(System.out, charsetName), true);
+        }
+        catch (UnsupportedEncodingException e) { System.out.println(e); }
+    }
+
+    static {
+        resync();
+    }
+
+    // don't instantiate
+    private StdOut() { }
+
+    // close the output stream (not required)
+   /**
+     * Close standard output.
+     */
+    public static void close() {
+        out.close();
+    }
+
+   /**
+     * Terminate the current line by printing the line separator string.
+     */
+    public static void println() {
+        out.println();
+    }
+
+   /**
+     * Print an object to standard output and then terminate the line.
+     */
+    public static void println(Object x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a boolean to standard output and then terminate the line.
+     */
+    public static void println(boolean x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a char to standard output and then terminate the line.
+     */
+    public static void println(char x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a double to standard output and then terminate the line.
+     */
+    public static void println(double x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a float to standard output and then terminate the line.
+     */
+    public static void println(float x) {
+        out.println(x);
+    }
+
+   /**
+     * Print an int to standard output and then terminate the line.
+     */
+    public static void println(int x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a long to standard output and then terminate the line.
+     */
+    public static void println(long x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a short to standard output and then terminate the line.
+     */
+    public static void println(short x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a byte to standard output and then terminate the line.
+     */
+    public static void println(byte x) {
+        out.println(x);
+    }
+
+   /**
+     * Flush standard output.
+     */
+    public static void print() {
+        out.flush();
+    }
+
+   /**
+     * Print an Object to standard output and flush standard output.
+     */
+    public static void print(Object x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a boolean to standard output and flush standard output.
+     */
+    public static void print(boolean x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a char to standard output and flush standard output.
+     */
+    public static void print(char x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a double to standard output and flush standard output.
+     */
+    public static void print(double x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a float to standard output and flush standard output.
+     */
+    public static void print(float x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an int to standard output and flush standard output.
+     */
+    public static void print(int x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a long to standard output and flush standard output.
+     */
+    public static void print(long x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a short to standard output and flush standard output.
+     */
+    public static void print(short x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a byte to standard output and flush standard output.
+     */
+    public static void print(byte x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string to standard output using the specified
+     * format string and arguments, and flush standard output.
+     */
+    public static void printf(String format, Object... args) {
+        out.printf(US_LOCALE, format, args);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string to standard output using the specified
+     * locale, format string, and arguments, and flush standard output.
+     */
+    public static void printf(Locale locale, String format, Object... args) {
+        out.printf(locale, format, args);
+        out.flush();
+    }
+
+    // This method is just here to test the class
+    public static void main(String[] args) {
+
+        // write to stdout
+        StdOut.println("Test");
+        StdOut.println(17);
+        StdOut.println(true);
+        StdOut.printf("%.6f\n", 1.0/7.0);
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdRandom.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdRandom.java
new file mode 100644
index 000000000..328a4962f
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdRandom.java
@@ -0,0 +1,348 @@
+package stdlibpack;
+/*************************************************************************
+ *  Compilation:  javac StdRandom.java
+ *  Execution:    java StdRandom
+ *
+ *  A library of static methods to generate pseudo-random numbers from
+ *  different distributions (bernoulli, uniform, gaussian, discrete,
+ *  and exponential). Also includes a method for shuffling an array.
+ *
+ *
+ *  %  java StdRandom 5
+ *  seed = 1316600602069
+ *  59 16.81826  true 8.83954  0 
+ *  32 91.32098  true 9.11026  0 
+ *  35 10.11874  true 8.95396  3 
+ *  92 32.88401  true 8.87089  0 
+ *  72 92.55791  true 9.46241  0 
+ *
+ *  % java StdRandom 5
+ *  seed = 1316600616575
+ *  96 60.17070  true 8.72821  0 
+ *  79 32.01607  true 8.58159  0 
+ *  81 59.49065  true 9.10423  1 
+ *  96 51.65818  true 9.02102  0 
+ *  99 17.55771  true 8.99762  0 
+ *
+ *  % java StdRandom 5 1316600616575
+ *  seed = 1316600616575
+ *  96 60.17070  true 8.72821  0 
+ *  79 32.01607  true 8.58159  0 
+ *  81 59.49065  true 9.10423  1 
+ *  96 51.65818  true 9.02102  0 
+ *  99 17.55771  true 8.99762  0 
+ *
+ *
+ *  Remark
+ *  ------
+ *    - Relies on randomness of nextDouble() method in java.util.Random
+ *      to generate pseudorandom numbers in [0, 1).
+ *
+ *    - This library allows you to set and get the pseudorandom number seed.
+ *
+ *    - See http://www.honeylocust.com/RngPack/ for an industrial
+ *      strength random number generator in Java.
+ *
+ *************************************************************************/
+
+import java.util.Random;
+
+/**
+ *  <i>Standard random</i>. This class provides methods for generating
+ *  random number from various distributions.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/22library">Section 2.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdRandom {
+
+    private static Random random;    // pseudo-random number generator
+    private static long seed;        // pseudo-random number generator seed
+
+    // static initializer
+    static {
+        // this is how the seed was set in Java 1.4
+        seed = System.currentTimeMillis();
+        random = new Random(seed);
+    }
+
+    // don't instantiate
+    private StdRandom() { }
+
+    /**
+     * Set the seed of the psedurandom number generator.
+     */
+    public static void setSeed(long s) {
+        seed   = s;
+        random = new Random(seed);
+    }
+
+    /**
+     * Get the seed of the psedurandom number generator.
+     */
+    public static long getSeed() {
+        return seed;
+    }
+
+    /**
+     * Return real number uniformly in [0, 1).
+     */
+    public static double uniform() {
+        return random.nextDouble();
+    }
+
+    /**
+     * Return an integer uniformly between 0 (inclusive) and N (exclusive).
+     */
+    public static int uniform(int N) {
+        return random.nextInt(N);
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+    //  STATIC METHODS BELOW RELY ON JAVA.UTIL.RANDOM ONLY INDIRECTLY VIA
+    //  THE STATIC METHODS ABOVE.
+    ///////////////////////////////////////////////////////////////////////////
+
+    /**
+     * Return real number uniformly in [0, 1).
+     */
+    public static double random() {
+        return uniform();
+    }
+
+    /**
+     * Return int uniformly in [a, b).
+     */
+    public static int uniform(int a, int b) {
+        return a + uniform(b - a);
+    }
+
+    /**
+     * Return real number uniformly in [a, b).
+     */
+    public static double uniform(double a, double b) {
+        return a + uniform() * (b-a);
+    }
+
+    /**
+     * Return a boolean, which is true with probability p, and false otherwise.
+     */
+    public static boolean bernoulli(double p) {
+        return uniform() < p;
+    }
+
+    /**
+     * Return a boolean, which is true with probability .5, and false otherwise.
+     */
+    public static boolean bernoulli() {
+        return bernoulli(0.5);
+    }
+
+    /**
+     * Return a real number with a standard Gaussian distribution.
+     */
+    public static double gaussian() {
+        // use the polar form of the Box-Muller transform
+        double r, x, y;
+        do {
+            x = uniform(-1.0, 1.0);
+            y = uniform(-1.0, 1.0);
+            r = x*x + y*y;
+        } while (r >= 1 || r == 0);
+        return x * Math.sqrt(-2 * Math.log(r) / r);
+
+        // Remark:  y * Math.sqrt(-2 * Math.log(r) / r)
+        // is an independent random gaussian
+    }
+
+    /**
+     * Return a real number from a gaussian distribution with given mean and stddev
+     */
+    public static double gaussian(double mean, double stddev) {
+        return mean + stddev * gaussian();
+    }
+
+    /**
+     * Return an integer with a geometric distribution with mean 1/p.
+     */
+    public static int geometric(double p) {
+        // using algorithm given by Knuth
+        return (int) Math.ceil(Math.log(uniform()) / Math.log(1.0 - p));
+    }
+
+    /**
+     * Return an integer with a Poisson distribution with mean lambda.
+     */
+    public static int poisson(double lambda) {
+        // using algorithm given by Knuth
+        // see http://en.wikipedia.org/wiki/Poisson_distribution
+        int k = 0;
+        double p = 1.0;
+        double L = Math.exp(-lambda);
+        do {
+            k++;
+            p *= uniform();
+        } while (p >= L);
+        return k-1;
+    }
+
+    /**
+     * Return a real number with a Pareto distribution with parameter alpha.
+     */
+    public static double pareto(double alpha) {
+        return Math.pow(1 - uniform(), -1.0/alpha) - 1.0;
+    }
+
+    /**
+     * Return a real number with a Cauchy distribution.
+     */
+    public static double cauchy() {
+        return Math.tan(Math.PI * (uniform() - 0.5));
+    }
+
+    /**
+     * Return a number from a discrete distribution: i with probability a[i].
+     * Precondition: array entries are nonnegative and their sum (very nearly) equals 1.0.
+     */
+    public static int discrete(double[] a) {
+        double EPSILON = 1E-14;
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] < 0.0) throw new IllegalArgumentException("array entry " + i + " is negative: " + a[i]);
+            sum = sum + a[i];
+        }
+        if (sum > 1.0 + EPSILON || sum < 1.0 - EPSILON)
+            throw new IllegalArgumentException("sum of array entries not equal to one: " + sum);
+
+        // the for loop may not return a value when both r is (nearly) 1.0 and when the
+        // cumulative sum is less than 1.0 (as a result of floating-point roundoff error)
+        while (true) {
+            double r = uniform();
+            sum = 0.0;
+            for (int i = 0; i < a.length; i++) {
+                sum = sum + a[i];
+                if (sum > r) return i;
+            }
+        }
+    }
+
+    /**
+     * Return a real number from an exponential distribution with rate lambda.
+     */
+    public static double exp(double lambda) {
+        return -Math.log(1 - uniform()) / lambda;
+    }
+
+    /**
+     * Rearrange the elements of an array in random order.
+     */
+    public static void shuffle(Object[] a) {
+        int N = a.length;
+        for (int i = 0; i < N; i++) {
+            int r = i + uniform(N-i);     // between i and N-1
+            Object temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of a double array in random order.
+     */
+    public static void shuffle(double[] a) {
+        int N = a.length;
+        for (int i = 0; i < N; i++) {
+            int r = i + uniform(N-i);     // between i and N-1
+            double temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of an int array in random order.
+     */
+    public static void shuffle(int[] a) {
+        int N = a.length;
+        for (int i = 0; i < N; i++) {
+            int r = i + uniform(N-i);     // between i and N-1
+            int temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+
+    /**
+     * Rearrange the elements of the subarray a[lo..hi] in random order.
+     */
+    public static void shuffle(Object[] a, int lo, int hi) {
+        if (lo < 0 || lo > hi || hi >= a.length) {
+            throw new IndexOutOfBoundsException("Illegal subarray range");
+        }
+        for (int i = lo; i <= hi; i++) {
+            int r = i + uniform(hi-i+1);     // between i and hi
+            Object temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of the subarray a[lo..hi] in random order.
+     */
+    public static void shuffle(double[] a, int lo, int hi) {
+        if (lo < 0 || lo > hi || hi >= a.length) {
+            throw new IndexOutOfBoundsException("Illegal subarray range");
+        }
+        for (int i = lo; i <= hi; i++) {
+            int r = i + uniform(hi-i+1);     // between i and hi
+            double temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of the subarray a[lo..hi] in random order.
+     */
+    public static void shuffle(int[] a, int lo, int hi) {
+        if (lo < 0 || lo > hi || hi >= a.length) {
+            throw new IndexOutOfBoundsException("Illegal subarray range");
+        }
+        for (int i = lo; i <= hi; i++) {
+            int r = i + uniform(hi-i+1);     // between i and hi
+            int temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Unit test.
+     */
+    public static void main(String[] args) {
+        int N = Integer.parseInt(args[0]);
+        if (args.length == 2) StdRandom.setSeed(Long.parseLong(args[1]));
+        double[] t = { .5, .3, .1, .1 };
+
+        StdOut.println("seed = " + StdRandom.getSeed());
+        for (int i = 0; i < N; i++) {
+            StdOut.printf("%2d "  , uniform(100));
+            StdOut.printf("%8.5f ", uniform(10.0, 99.0));
+            StdOut.printf("%5b "  , bernoulli(.5));
+            StdOut.printf("%7.5f ", gaussian(9.0, .2));
+            StdOut.printf("%2d "  , discrete(t));
+            StdOut.println();
+        }
+
+        String[] a = "A B C D E F G".split(" ");
+        for (String s : a)
+            StdOut.print(s + " ");
+        StdOut.println();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdStats.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdStats.java
new file mode 100644
index 000000000..ea5159560
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/StdStats.java
@@ -0,0 +1,337 @@
+package stdlibpack;
+
+/*************************************************************************
+ *  Compilation:  javac StdStats.java
+ *  Execution:    java StdStats < input.txt
+ *
+ *  Library of statistical functions.
+ *
+ *  The test client reads an array of real numbers from standard
+ *  input, and computes the minimum, mean, maximum, and
+ *  standard deviation.
+ *
+ *  The functions all throw a NullPointerException if the array
+ *  passed in is null.
+
+ *  % more tiny.txt
+ *  5
+ *  3.0 1.0 2.0 5.0 4.0
+ *
+ *  % java StdStats < tiny.txt
+ *         min   1.000
+ *        mean   3.000
+ *         max   5.000
+ *     std dev   1.581
+ *
+ *************************************************************************/
+
+/**
+ *  <i>Standard statistics</i>. This class provides methods for computing
+ *  statistics such as min, max, mean, sample standard deviation, and
+ *  sample variance.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/22library">Section 2.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdStats {
+
+    private StdStats() { }
+
+    /**
+      * Return maximum value in array, -infinity if no such value.
+      */
+    public static double max(double[] a) {
+        double max = Double.NEGATIVE_INFINITY;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] > max) max = a[i];
+        }
+        return max;
+    }
+
+    /**
+      * Return maximum value in subarray a[lo..hi], -infinity if no such value.
+      */
+    public static double max(double[] a, int lo, int hi) {
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        double max = Double.NEGATIVE_INFINITY;
+        for (int i = lo; i <= hi; i++) {
+            if (a[i] > max) max = a[i];
+        }
+        return max;
+    }
+
+   /**
+     * Return maximum value of array, Integer.MIN_VALUE if no such value
+     */
+    public static int max(int[] a) {
+        int max = Integer.MIN_VALUE;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] > max) max = a[i];
+        }
+        return max;
+    }
+
+   /**
+     * Return minimum value in array, +infinity if no such value.
+     */
+    public static double min(double[] a) {
+        double min = Double.POSITIVE_INFINITY;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] < min) min = a[i];
+        }
+        return min;
+    }
+
+    /**
+      * Return minimum value in subarray a[lo..hi], +infinity if no such value.
+      */
+    public static double min(double[] a, int lo, int hi) {
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        double min = Double.POSITIVE_INFINITY;
+        for (int i = lo; i <= hi; i++) {
+            if (a[i] < min) min = a[i];
+        }
+        return min;
+    }
+
+   /**
+     * Return minimum value of array, Integer.MAX_VALUE if no such value
+     */
+    public static int min(int[] a) {
+        int min = Integer.MAX_VALUE;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] < min) min = a[i];
+        }
+        return min;
+    }
+
+   /**
+     * Return average value in array, NaN if no such value.
+     */
+    public static double mean(double[] a) {
+        if (a.length == 0) return Double.NaN;
+        double sum = sum(a);
+        return sum / a.length;
+    }
+
+   /**
+     * Return average value in subarray a[lo..hi], NaN if no such value.
+     */
+    public static double mean(double[] a, int lo, int hi) {
+        int length = hi - lo + 1;
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        if (length == 0) return Double.NaN;
+        double sum = sum(a, lo, hi);
+        return sum / length;
+    }
+
+   /**
+     * Return average value in array, NaN if no such value.
+     */
+    public static double mean(int[] a) {
+        if (a.length == 0) return Double.NaN;
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum = sum + a[i];
+        }
+        return sum / a.length;
+    }
+
+   /**
+     * Return sample variance of array, NaN if no such value.
+     */
+    public static double var(double[] a) {
+        if (a.length == 0) return Double.NaN;
+        double avg = mean(a);
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / (a.length - 1);
+    }
+
+   /**
+     * Return sample variance of subarray a[lo..hi], NaN if no such value.
+     */
+    public static double var(double[] a, int lo, int hi) {
+        int length = hi - lo + 1;
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        if (length == 0) return Double.NaN;
+        double avg = mean(a, lo, hi);
+        double sum = 0.0;
+        for (int i = lo; i <= hi; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / (length - 1);
+    }
+
+   /**
+     * Return sample variance of array, NaN if no such value.
+     */
+    public static double var(int[] a) {
+        if (a.length == 0) return Double.NaN;
+        double avg = mean(a);
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / (a.length - 1);
+    }
+
+   /**
+     * Return population variance of array, NaN if no such value.
+     */
+    public static double varp(double[] a) {
+        if (a.length == 0) return Double.NaN;
+        double avg = mean(a);
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / a.length;
+    }
+
+   /**
+     * Return population variance of subarray a[lo..hi],  NaN if no such value.
+     */
+    public static double varp(double[] a, int lo, int hi) {
+        int length = hi - lo + 1;
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        if (length == 0) return Double.NaN;
+        double avg = mean(a, lo, hi);
+        double sum = 0.0;
+        for (int i = lo; i <= hi; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / length;
+    }
+
+
+   /**
+     * Return sample standard deviation of array, NaN if no such value.
+     */
+    public static double stddev(double[] a) {
+        return Math.sqrt(var(a));
+    }
+
+   /**
+     * Return sample standard deviation of subarray a[lo..hi], NaN if no such value.
+     */
+    public static double stddev(double[] a, int lo, int hi) {
+        return Math.sqrt(var(a, lo, hi));
+    }
+
+   /**
+     * Return sample standard deviation of array, NaN if no such value.
+     */
+    public static double stddev(int[] a) {
+        return Math.sqrt(var(a));
+    }
+
+   /**
+     * Return population standard deviation of array, NaN if no such value.
+     */
+    public static double stddevp(double[] a) {
+        return Math.sqrt(varp(a));
+    }
+
+   /**
+     * Return population standard deviation of subarray a[lo..hi], NaN if no such value.
+     */
+    public static double stddevp(double[] a, int lo, int hi) {
+        return Math.sqrt(varp(a, lo, hi));
+    }
+
+   /**
+     * Return sum of all values in array.
+     */
+    public static double sum(double[] a) {
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += a[i];
+        }
+        return sum;
+    }
+
+   /**
+     * Return sum of all values in subarray a[lo..hi].
+     */
+    public static double sum(double[] a, int lo, int hi) {
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        double sum = 0.0;
+        for (int i = lo; i <= hi; i++) {
+            sum += a[i];
+        }
+        return sum;
+    }
+
+   /**
+     * Return sum of all values in array.
+     */
+    public static int sum(int[] a) {
+        int sum = 0;
+        for (int i = 0; i < a.length; i++) {
+            sum += a[i];
+        }
+        return sum;
+    }
+
+   /**
+     * Plot points (i, a[i]) to standard draw.
+     */
+    public static void plotPoints(double[] a) {
+        int N = a.length;
+        StdDraw.setXscale(0, N-1);
+        StdDraw.setPenRadius(1.0 / (3.0 * N));
+        for (int i = 0; i < N; i++) {
+            StdDraw.point(i, a[i]);
+        }
+    }
+
+   /**
+     * Plot line segments connecting points (i, a[i]) to standard draw.
+     */
+    public static void plotLines(double[] a) {
+        int N = a.length;
+        StdDraw.setXscale(0, N-1);
+        StdDraw.setPenRadius();
+        for (int i = 1; i < N; i++) {
+            StdDraw.line(i-1, a[i-1], i, a[i]);
+        }
+    }
+
+   /**
+     * Plot bars from (0, a[i]) to (i, a[i]) to standard draw.
+     */
+    public static void plotBars(double[] a) {
+        int N = a.length;
+        StdDraw.setXscale(0, N-1);
+        for (int i = 0; i < N; i++) {
+            StdDraw.filledRectangle(i, a[i]/2, .25, a[i]/2);
+        }
+    }
+
+
+   /**
+     * Test client.
+     * Convert command-line arguments to array of doubles and call various methods.
+     */
+    public static void main(String[] args) {
+        double[] a = StdArrayIO.readDouble1D();
+        StdOut.printf("       min %7.3f\n", min(a));
+        StdOut.printf("      mean %7.3f\n", mean(a));
+        StdOut.printf("       max %7.3f\n", max(a));
+        StdOut.printf("   std dev %7.3f\n", stddev(a));
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Stopwatch.java b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Stopwatch.java
new file mode 100644
index 000000000..d8589009e
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/stdlibpack/Stopwatch.java
@@ -0,0 +1,47 @@
+package stdlibpack;
+
+
+/*************************************************************************
+ *  Compilation:  javac Stopwatch.java
+ *
+ *
+ *************************************************************************/
+
+/**
+ *  <i>Stopwatch</i>. This class is a data type for measuring
+ *  the running time (wall clock) of a program.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/32class">Section 3.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ */
+
+
+
+public class Stopwatch { 
+
+    private final long start;
+
+    private String startString;
+
+   /**
+     * Create a stopwatch object.
+     */
+    public Stopwatch() {
+        start = System.currentTimeMillis();
+
+        java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("HH:mm:ss.SSS");
+        startString = sdf.format(start);
+    } 
+
+
+   /**
+     * Return elapsed time (in seconds) since this object was created.
+     */
+    public double elapsedTime() {
+        long now = System.currentTimeMillis();
+        return (now - start) / 1000.0;
+    }
+
+} 
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/.gitignore b/v4-cokapi/backends/java/java_jail/cp/traceprinter/.gitignore
new file mode 100644
index 000000000..60c153095
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/.gitignore
@@ -0,0 +1 @@
+!compile
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/InMemory.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/InMemory.java
new file mode 100644
index 000000000..cca642032
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/InMemory.java
@@ -0,0 +1,235 @@
+/*****************************************************************************
+
+traceprinter: a Java package to print traces of Java programs
+David Pritchard (daveagp@gmail.com), created May 2013
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+See README for documentation on this package.
+
+This file was originally based on 
+com.sun.tools.example.trace.Trace, written by Robert Field.
+
+******************************************************************************/
+
+package traceprinter;
+
+import com.sun.jdi.*;
+import com.sun.jdi.connect.*;
+
+import java.util.regex.*;
+import java.util.*;
+import java.io.*;
+
+import javax.tools.*;
+
+import traceprinter.ramtools.*;
+
+import javax.json.*;
+
+public class InMemory {
+
+    String usercode;
+    JsonObject optionsObject;
+    JsonArray argsArray;
+    String givenStdin;
+    String mainClass;
+    VirtualMachine vm;
+    static String stdin;
+    Map<String, byte[]> bytecode;
+
+    public final static long startTime = System.currentTimeMillis();
+
+    public static void main(String[] args) {
+
+        JDI2JSON.userlog("Debugger VM maxMemory: " + Runtime.getRuntime().maxMemory() / 1024 / 1024 + "M");    
+
+        // just a sanity check, can the debugger VM see this NoopMain?
+        traceprinter.shoelace.NoopMain.main(null); 
+        // however, the debuggee might or might not be able to.
+        // use the CLASSPATH environment variable so that it includes
+        // the parent directory of traceprinter; using -cp does not
+        // reliably pass on to the debuggee.
+
+        try {
+            new InMemory(
+                         Json.createReader(new InputStreamReader
+                                           (System.in, "UTF-8"))
+                         .readObject());
+        } 
+        catch (IOException e) {
+            System.out.print(JDI2JSON.compileErrorOutput("[could not read user code]",
+                                                         "Internal IOException in php->java",
+                                                         1, 1));
+        }
+    }
+
+    // convenience version of JDI2JSON method
+    void compileError(String msg, long row, long col) {
+        try {
+            PrintStream out = new PrintStream(System.out, true, "UTF-8");
+            out.print(JDI2JSON.compileErrorOutput(usercode, msg, row, col));
+        }
+        catch (UnsupportedEncodingException e) { //fallback
+            System.out.print(JDI2JSON.compileErrorOutput(usercode, msg, row, col));
+        }
+    }
+
+    // figure out the class name, then compile and run main([])
+    InMemory(JsonObject frontend_data) {
+        this.usercode = frontend_data.getJsonString("usercode").getString();
+        this.optionsObject = frontend_data.getJsonObject("options");
+        this.argsArray = frontend_data.getJsonArray("args");
+        this.givenStdin = frontend_data.getJsonString("stdin").getString();
+	stdin = this.givenStdin;
+
+        if (frontend_data.containsKey("visualizer_args") && (!frontend_data.isNull("visualizer_args"))) {
+            JsonObject visualizer_args = frontend_data.getJsonObject("visualizer_args");
+            if (visualizer_args.getJsonNumber("MAX_STEPS") != null)
+                JSONTracingThread.MAX_STEPS = visualizer_args.getJsonNumber("MAX_STEPS").intValue();
+            if (visualizer_args.getJsonNumber("MAX_STACK_SIZE") != null)
+                JSONTracingThread.MAX_STACK_SIZE = visualizer_args.getJsonNumber("MAX_STACK_SIZE").intValue();
+            if (visualizer_args.getJsonNumber("MAX_WALLTIME_SECONDS") != null)
+                JSONTracingThread.MAX_WALLTIME_SECONDS = visualizer_args.getJsonNumber("MAX_WALLTIME_SECONDS").intValue();
+        }
+
+        // not 100% accurate, if people have multiple top-level classes + public inner classes
+        Pattern p = Pattern.compile("public\\s+class\\s+([a-zA-Z0-9_]+)\\b");
+        Matcher m = p.matcher(usercode);
+        if (!m.find()) {
+            compileError("Error: Make sure your code includes 'public class \u00ABClassName\u00BB'", 1, 1);
+            return;
+        }
+
+        mainClass = m.group(1);
+
+        for (String S: JDI2JSON.PU_stdlib) {
+            if (mainClass.equals(S)) {
+                compileError("You cannot use a class named "+S+" since it conflicts with a 'stdlib' class name", 1, 1);
+                return;
+            }
+        }
+
+        CompileToBytes c2b = new CompileToBytes();
+
+        c2b.compilerOutput = new StringWriter();
+        c2b.options = Arrays.asList("-g -Xmaxerrs 1".split(" "));
+        DiagnosticCollector<JavaFileObject> errorCollector = new DiagnosticCollector<>();
+        c2b.diagnosticListener = errorCollector;
+
+        bytecode = c2b.compileFile(mainClass, usercode);
+
+        if (bytecode == null) {
+            for (Diagnostic<? extends JavaFileObject> err : errorCollector.getDiagnostics())
+                if (err.getKind() == Diagnostic.Kind.ERROR) {
+                    compileError("Error: " + err.getMessage(null), Math.max(0, err.getLineNumber()),
+                                 Math.max(0, err.getColumnNumber()));
+                    return;
+                }
+            compileError("Compiler did not work, but reported no ERROR?!?!", 0, 0);
+            return;
+        }
+
+        vm = launchVM("traceprinter.shoelace.NoopMain");
+        vm.setDebugTraceMode(0);
+
+        JSONTracingThread tt = new JSONTracingThread(this);
+        tt.start();
+
+        vm.resume();
+    }
+
+    VirtualMachine launchVM(String className) {
+        LaunchingConnector connector = theCommandLineLaunchConnector();
+        try {
+
+            java.util.Map<String, Connector.Argument> args 
+                = connector.defaultArguments();
+
+            /* what are the other options? on my system,
+
+            for (java.util.Map.Entry<String, Connector.Argument> arg: args.entrySet()) {
+                System.out.print(arg.getKey()+" ");
+                System.out.print("["+arg.getValue().value()+"]: ");
+                System.out.println(arg.getValue().description());
+            }
+            
+            prints out:
+
+home [/java/jre]: Home directory of the SDK or runtime environment used to launch the application
+options []: Launched VM options
+main []: Main class and arguments, or if -jar is an option, the main jar file and arguments
+suspend [true]: All threads will be suspended before execution of main
+quote ["]: Character used to combine space-delimited text into a single command line argument
+vmexec [java]: Name of the Java VM launcher
+
+            For more info, see
+http://docs.oracle.com/javase/7/docs/jdk/api/jpda/jdi/com/sun/jdi/connect/Connector.Argument.html
+            */
+            
+            ((Connector.Argument)(args.get("main"))).setValue(className);
+            
+            String options = "";
+            
+            // inherit the classpath. if it were not for this, the CLASSPATH environment
+            // variable would be inherited, but the -cp command-line option would not.
+            // note that -cp overrides CLASSPATH.
+
+            options += "-cp " + System.getProperty("java.class.path") + " ";
+
+            // set a memory limit
+            
+            options += "-Xmx512m" + " "; // changed by pgbovine
+            
+            options += "-Dfile.encoding=UTF-8" + " ";
+
+            options += "-Djava.awt.headless=true" + " ";
+
+            ((Connector.Argument)(args.get("options"))).setValue(options);
+            
+            //	    System.out.println("About to call LaunchingConnector.launch...");
+	    VirtualMachine result = connector.launch(args);
+	    //System.out.println("...done");
+            return result;
+        } catch (VMStartException exc) {
+	    System.out.println("Hoeyx!");
+            System.out.println("Failed in launchTarget: " + exc.getMessage());
+            exc.printStackTrace();
+	    byte[] b = new byte[100000];
+	    System.out.println(exc.process().exitValue());
+	    try {
+		BufferedReader in = new BufferedReader(new InputStreamReader(exc.process().getErrorStream()));
+		String inputLine;
+		while ((inputLine = in.readLine()) != null)
+		    System.out.println(inputLine);
+		in = new BufferedReader(new InputStreamReader(exc.process().getInputStream()));
+		while ((inputLine = in.readLine()) != null)
+		    System.out.println(inputLine);
+
+	    }
+	    catch (java.io.IOException excx) {
+		System.out.println("Crud");
+	    }
+        } catch (java.io.IOException exc) {
+            System.out.println("Failed in launchTarget: " + exc.getMessage());
+            exc.printStackTrace();
+        } catch (IllegalConnectorArgumentsException exc) {
+	    System.out.println("Hoeyy!");
+            for (String S : exc.argumentNames()) {
+                System.out.println(S);
+            }
+            System.out.println(exc);
+        }
+        return null; // when caught
+    }
+
+    LaunchingConnector theCommandLineLaunchConnector() {
+        for (Connector connector : 
+                 Bootstrap.virtualMachineManager().allConnectors()) 
+            if (connector.name().equals("com.sun.jdi.CommandLineLaunch"))
+                return (LaunchingConnector)connector;
+        throw new Error("No launching connector");
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/JDI2JSON.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/JDI2JSON.java
new file mode 100644
index 000000000..dc44f3127
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/JDI2JSON.java
@@ -0,0 +1,825 @@
+/*****************************************************************************
+
+traceprinter: a Java package to print traces of Java programs
+David Pritchard (daveagp@gmail.com), created May 2013
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+See README for documentation on this package.
+
+******************************************************************************/
+
+package traceprinter;
+
+import java.util.*;
+import com.sun.jdi.*;
+import com.sun.jdi.request.*;
+import com.sun.jdi.event.*;
+
+import java.io.*;
+import javax.json.*;
+
+public class JDI2JSON {
+    
+    private class InputPuller {
+        InputStreamReader vm_link;
+        StringWriter contents = new java.io.StringWriter();
+        String getContents() {
+            return contents.toString();
+        }
+        InputPuller(InputStream ir) {
+            try {
+                vm_link = new InputStreamReader(ir, "UTF-8");
+            }
+            catch (UnsupportedEncodingException e) {
+                throw new RuntimeException("Encoding error!");
+            }
+        }
+        void pull() {
+            int BUFFER_SIZE = 2048;
+            char[] cbuf = new char[BUFFER_SIZE];
+            int count;
+            try {
+                while (vm_link.ready() 
+                       && ((count = vm_link.read(cbuf, 0, BUFFER_SIZE)) >= 0)) {
+                    contents.write(cbuf, 0, count);
+                }
+            } 
+            catch(IOException e) {
+                throw new RuntimeException("I/O Error!");
+            }
+        }
+    }
+    
+    private VirtualMachine vm;
+    private InputPuller stdout, stderr;
+    private JsonObject last_ep = null;
+    private TreeMap<Long, ObjectReference> heap;
+    private TreeSet<Long> heap_done;
+
+    /*    private ArrayList<Long> frame_stack = new ArrayList<Long>();*/
+    private long frame_ticker = 0;
+
+    public List<ReferenceType> staticListable = new ArrayList<>();
+
+    public ReferenceType stdinRT = null;
+
+    public static StringBuilder userlogged;
+
+    public static boolean showVoid = true;
+
+    boolean showStringsAsValues = true;
+    boolean showAllFields = false;
+
+    public JDI2JSON(VirtualMachine vm, InputStream vm_stdout, InputStream vm_stderr, JsonObject optionsObject) {
+        stdout = new InputPuller(vm_stdout);
+        stderr = new InputPuller(vm_stderr);
+	//frame_stack.add(frame_ticker++);
+        if (optionsObject.containsKey("showStringsAsValues"))
+            showStringsAsValues 
+                = optionsObject.getBoolean("showStringsAsValues");
+        if (optionsObject.containsKey("showAllFields"))
+            showAllFields = optionsObject.getBoolean("showAllFields");
+    }
+
+    public static void userlog(String S) {
+        if (userlogged == null) userlogged = new StringBuilder();
+        userlogged.append(S).append("\n");
+    }
+    
+    // returns null when nothing changed since the last time
+    // (or when only event type changed and new value is "step_line")
+    public ArrayList<JsonObject> convertExecutionPoint(Event e, Location loc, ThreadReference t) {
+        stdout.pull();
+        stderr.pull();        
+
+	//System.out.println(e);
+
+	ArrayList<JsonObject> results = new ArrayList<>();
+
+        if (loc.method().name().indexOf("access$")>=0) return results; // don't visualize synthetic access$000 methods
+        
+        heap_done = new TreeSet<Long>();
+        heap = new TreeMap<>();
+
+	JsonValue returnValue = null;
+
+        JsonObjectBuilder result = Json.createObjectBuilder();
+        result.add("stdout", stdout.getContents());
+        if (e instanceof MethodEntryEvent) {
+            result.add("event", "call");
+	    //frame_stack.add(frame_ticker++);
+            result.add("line", loc.lineNumber());
+        }
+        else if (e instanceof MethodExitEvent) {
+            returnValue = convertValue(((MethodExitEvent)e).returnValue());
+	    result.add("event", "return");
+	    result.add("line", loc.lineNumber());
+        }
+        else if (e instanceof BreakpointEvent || e instanceof StepEvent) {
+            result.add("event", "step_line");
+            result.add("line", loc.lineNumber());
+        }
+        else if (e instanceof ExceptionEvent) {
+            // we could compare this with null to see if it was caught.
+            // Location katch = ((ExceptionEvent)e).catchLocation();
+            
+            // but it turns out we don't care, since either the code
+            // keeps going or just halts appropriately anyway.
+
+            result.add("event", "exception");
+            
+            result.add("exception_msg", exceptionMessage((ExceptionEvent)e));
+        }
+                        
+        JsonArrayBuilder frames = Json.createArrayBuilder();
+        StackFrame lastNonUserFrame = null;
+        try {
+	    boolean firstFrame = true;
+            for (StackFrame sf : t.frames()) {
+                if (!showFramesInLocation(sf.location())) {
+                    lastNonUserFrame = sf;
+                    continue;
+                }
+
+                if (lastNonUserFrame != null) {
+                    frame_ticker++;
+                    frames.add(convertFrameStub(lastNonUserFrame));
+                    lastNonUserFrame = null;
+                }
+                frame_ticker++;
+                frames.add(convertFrame(sf, firstFrame, returnValue));
+		firstFrame = false;
+		returnValue = null;
+            }
+        }
+        catch (IncompatibleThreadStateException ex) {
+	    //thread was not suspended .. should not normally happen
+	    
+            throw new RuntimeException("ITSE");
+        }
+        result.add("stack_to_render", frames);
+
+        //if (e instanceof MethodExitEvent)
+	//  frame_stack.remove(frame_stack.size()-1);
+
+        JsonObjectBuilder statics = Json.createObjectBuilder();
+        JsonArrayBuilder statics_a = Json.createArrayBuilder();
+        for (ReferenceType rt : staticListable) 
+            if (rt.isInitialized() && !in_builtin_package(rt.name())) 
+                for (Field f : rt.visibleFields()) 
+                    if (f.isStatic()) {
+                        statics.add(rt.name()+"."+f.name(),
+                                    convertValue(rt.getValue(f)));
+                        statics_a.add(rt.name()+"."+f.name());
+                    }
+        if (stdinRT != null && stdinRT.isInitialized()) {
+            int stdinPosition = ((IntegerValue)stdinRT.getValue(stdinRT.fieldByName("position"))).value();
+            result.add("stdinPosition", stdinPosition);
+            /*            statics.add("stdin.Position", stdinPosition);
+                          statics_a.add("stdin.Position");*/
+        }
+
+        result.add("globals", statics);
+        result.add("ordered_globals", statics_a);
+        
+        result.add("func_name", loc.method().name());
+        
+        JsonObjectBuilder heapDescription = Json.createObjectBuilder();
+        convertHeap(heapDescription);
+        result.add("heap", heapDescription);
+
+	JsonObject this_ep = result.build();
+	if (reallyChanged(last_ep, this_ep)) {
+	    results.add(this_ep);
+	    last_ep = this_ep;
+	}
+        
+        
+	
+	return results;
+    }
+    
+    public static String[] builtin_packages = {"java", "javax", "sun", "com.sun", "traceprinter"};
+
+    public static String[] PU_stdlib = {"BinaryIn", "BinaryOut", "BinaryStdIn", "BinaryStdOut",
+                                  "Copy", "Draw", "DrawListener", "In", "InTest",
+                                  "Out", "Picture", "StdArrayIO", "StdAudio",
+                                        "StdDraw", "StdDraw3D", "StdIn", "StdInTest",
+                                        "StdOut", "StdRandom", "StdStats", "Stopwatch", "Stack", "Queue", "ST", "Point", "ST"};
+
+    // input format: [package.]ClassName:lineno or [package.]ClassName
+    public boolean in_builtin_package(String S) {
+        S = S.split(":")[0];
+        for (String badPrefix: builtin_packages)
+            if (S.startsWith(badPrefix+"."))
+                return true;
+        for (String badClass: PU_stdlib) {
+            if (S.equals(badClass)) 
+                return true;
+            if (S.startsWith(badClass+"$"))
+                return true;
+        }
+        return false;
+    }
+
+    private boolean showFramesInLocation(Location loc) {
+	return (!in_builtin_package(loc.toString())
+                && !loc.method().name().contains("$access"));
+        // skip synthetic accessor methods
+    }
+
+    private boolean showGuts(ReferenceType rt) {
+	return (rt.name().matches("(^|\\.)Point") ||
+                !in_builtin_package(rt.name()));
+    }    
+
+    public boolean reportEventsAtLocation(Location loc) {
+        if (in_builtin_package(loc.toString())) 
+            return false;
+
+        if (loc.toString().contains("$$Lambda$"))
+            return false;
+ 
+        if (loc.lineNumber() <= 0) {
+            userlog(loc.toString());
+            return true;
+        }
+
+        return true;
+    }
+    
+    private JsonObject createReturnEventFrom(Location loc, JsonObject base_ep, JsonValue returned) {
+	try {
+	    JsonObjectBuilder result = Json.createObjectBuilder();
+	    result.add("event", "return");
+	    result.add("line", loc.lineNumber());
+	    for (Map.Entry<String, JsonValue> me : base_ep.entrySet()) {
+		if (me.getKey().equals("event") || me.getKey().equals("line")) 
+		    {}
+		else if (me.getKey().equals("stack_to_render")) {
+		    JsonArray old_stack_to_render = (JsonArray)me.getValue();
+		    JsonObject old_top_frame = (JsonObject)(old_stack_to_render.get(0));
+		    JsonObject old_top_frame_vars = (JsonObject)(old_top_frame.get("encoded_locals"));
+		    JsonArray old_top_frame_vars_o = (JsonArray)(old_top_frame.get("ordered_varnames"));
+		    result.add("stack_to_render", 
+			       jsonModifiedArray(old_stack_to_render, 0,
+						 jsonModifiedObject
+						 (jsonModifiedObject
+						  (old_top_frame, 
+						   "encoded_locals", 
+						   jsonModifiedObject(old_top_frame_vars, "__return__", returned)),
+						  "ordered_varnames", 
+						  jsonModifiedArray(old_top_frame_vars_o, -1, jsonString("__return__")))));
+		}
+		else result.add(me.getKey(), me.getValue());
+	    }
+	    return result.build();
+	}
+	catch (IndexOutOfBoundsException exc) {
+	    return base_ep;
+	}
+    }
+
+    // issue: the frontend uses persistent frame ids but JDI doesn't provide them
+    // approach 1, trying to compute them, seems intractable (esp. w/ callbacks)
+    // approach 2, using an id based on stack depth, does not work w/ frontend
+    // approach 3, just give each frame at each execution point a unique id,
+    // is what we do. but we also want to skip animating e.p.'s where nothing changed,
+    // and if only the frame ids changed, we should treat it as if nothing changed
+    private boolean reallyChanged(JsonObject old_ep, JsonObject new_ep) {
+        if (old_ep == null) return true;
+        return !stripFrameIDs(new_ep).equals(stripFrameIDs(old_ep));
+    }
+
+    private JsonObject stripFrameIDs(JsonObject ep) {
+        JsonArrayBuilder result = Json.createArrayBuilder();
+        for (JsonValue frame : (JsonArray)(ep.get("stack_to_render"))) {
+                 result.add(jsonModifiedObject
+                            (jsonModifiedObject( (JsonObject)frame,
+                                                 "unique_hash", 
+                                                 jsonString("")),
+                             "frame_id",
+                             jsonInt(0)));
+             }
+        return jsonModifiedObject(ep, "stack_to_render", result.build());
+    }
+
+    private JsonObjectBuilder convertFrame(StackFrame sf, boolean highlight, JsonValue returnValue) {
+        JsonObjectBuilder result = Json.createObjectBuilder();
+        JsonArrayBuilder result_ordered = Json.createArrayBuilder();
+        if (sf.thisObject() != null) {
+            result.add("this", convertValue(sf.thisObject()));
+            result_ordered.add("this");
+	}
+
+        // list args first
+        /* KNOWN ISSUE:
+           .arguments() gets the args which have names in LocalVariableTable,
+           but if there are none, we get an IllegalArgExc, and can use .getArgumentValues()
+           However, sometimes some args have names but not all. Such as within synthetic
+           lambda methods like "lambda$inc$0". For an unknown reason, trying .arguments()
+           causes a JDWP error in such frames. So sadly, those frames are incomplete. */
+        
+        boolean JDWPerror = false;
+        try {
+            sf.getArgumentValues();
+        }
+        catch (com.sun.jdi.InternalException e) {
+            if (e.toString().contains("Unexpected JDWP Error: 35")) // expect JDWP error 35
+                JDWPerror = true;
+            else {
+                throw e;
+            }
+        }
+
+        List<LocalVariable> frame_vars = null, frame_args = null;
+        boolean completed_args = false;
+        try {
+            // args make sense to show first
+            frame_args = sf.location().method().arguments(); //throwing statement
+            completed_args = !JDWPerror && frame_args.size() == sf.getArgumentValues().size();
+            for (LocalVariable lv : frame_args) {
+                //System.out.println(sf.location().method().getClass());
+		if (lv.name().equals("args")) {
+		    Value v = sf.getValue(lv);
+		    if (v instanceof ArrayReference && ((ArrayReference)v).length()==0) continue;
+		}
+                try {
+                    result.add(lv.name(),
+                               convertValue(sf.getValue(lv)));
+                    result_ordered.add(lv.name());
+                }
+                catch (IllegalArgumentException exc) {
+                    System.out.println("That shouldn't happen!");
+                }
+            }
+        }
+        catch (AbsentInformationException e) {
+        }
+        // args did not have names, like a functional interface call...
+        // although hopefully a future Java version will give them names!
+        if (!completed_args && !JDWPerror) {
+            try {
+                List<Value> anon_args = sf.getArgumentValues();
+                for (int i=0; i<anon_args.size(); i++) {
+                    result.add("param#"+i, convertValue(anon_args.get(i)));
+                    result_ordered.add("param#"+i);
+                }
+            }
+            catch (InvalidStackFrameException e) {
+            }
+        }
+        
+        if (JDWPerror) {
+            result.add("&hellip;?", jsonArray("NUMBER-LITERAL", jsonString("&hellip;?"))); // hack since number-literal is just html
+            result_ordered.add("&hellip;?");
+        }
+
+        // now non-args
+        try {
+            /* We're using the fact that the hashCode tells us something
+               about the variable's position (which is subject to change)
+               to compensate for that the natural order of variables()
+               is often different from the declaration order (see LinkedList.java) */
+            frame_vars = sf.location().method().variables(); //throwing statement
+            TreeMap<Integer, String> orderByHash = null;
+            int offset = 0;
+            for (LocalVariable lv : frame_vars) 
+                if (!lv.isArgument()) 
+                    if (showAllFields || !lv.name().endsWith("$")) { // skip for-loop synthetics (exists in Java 7, but not 8)
+                        try {
+                            result.add(lv.name(),
+                                       convertValue(sf.getValue(lv)));
+                            if (orderByHash == null) {
+                                offset = lv.hashCode();
+                                orderByHash = new TreeMap<>();
+                            }
+                            orderByHash.put(lv.hashCode() - offset, lv.name());
+                        }
+                        catch (IllegalArgumentException exc) {
+                            // variable not yet defined, don't list it
+                        }
+                    }
+            if (orderByHash != null) // maybe no local vars
+                for (Map.Entry<Integer,String> me : orderByHash.entrySet())
+                    result_ordered.add(me.getValue());
+        }
+        catch (AbsentInformationException ex) {
+            //System.out.println("AIE: can't list variables in " + sf.location());
+        }     
+        if (returnValue != null && (showVoid || returnValue != convertVoid)) {
+            result.add("__return__", returnValue);
+            result_ordered.add("__return__");
+	}        
+	return Json.createObjectBuilder()
+	    .add("func_name", sf.location().method().name()+":"+sf.location().lineNumber())
+	    .add("encoded_locals", result)
+	    .add("ordered_varnames", result_ordered)
+	    .add("parent_frame_id_list", Json.createArrayBuilder())
+	    .add("is_highlighted", highlight)//frame_stack.size()-1)
+	    .add("is_zombie", false)
+	    .add("is_parent", false)
+	    .add("unique_hash", ""+frame_ticker)//frame_stack.get(level))
+	    .add("frame_id", frame_ticker);//frame_stack.get(level));
+    }
+    
+    // used to show a single non-user frame when there is
+    // non-user code running between two user frames
+    private JsonObjectBuilder convertFrameStub(StackFrame sf) {
+        return Json.createObjectBuilder()
+            .add("func_name", "\u22EE\n"+sf.location().declaringType().name()+"."+sf.location().method().name())
+            .add("encoded_locals", Json.createObjectBuilder())//.add("...", "..."))
+            .add("ordered_varnames", Json.createArrayBuilder())//.add("..."))
+            .add("parent_frame_id_list", Json.createArrayBuilder())
+	    .add("is_highlighted", false)//frame_stack.size()-1)
+	    .add("is_zombie", false)
+	    .add("is_parent", false)
+	    .add("unique_hash", ""+frame_ticker)//frame_stack.get(level))
+	    .add("frame_id", frame_ticker);//frame_stack.get(level));
+    }
+    
+    void convertHeap(JsonObjectBuilder result) {
+        heap_done = new java.util.TreeSet<>();
+        while (!heap.isEmpty()) {
+            Map.Entry<Long, ObjectReference> first = heap.firstEntry();
+            ObjectReference obj = first.getValue();
+            long id = first.getKey();
+            heap.remove(id);
+            if (heap_done.contains(id))
+                continue;
+            heap_done.add(id);
+            result.add(""+id, convertObject(obj, true));
+        }
+    }
+    
+    List<String> wrapperTypes = 
+        new ArrayList<String>
+        (Arrays.asList
+         ("Byte Short Integer Long Float Double Character Boolean".split(" ")));
+
+    private JsonValue convertObject(ObjectReference obj, boolean fullVersion) {
+        if (showStringsAsValues && obj.referenceType().name().startsWith("java.lang.")
+            && wrapperTypes.contains(obj.referenceType().name().substring(10))) {
+            return convertValue(obj.getValue(obj.referenceType().fieldByName("value")));
+        }
+
+        JsonArrayBuilder result = Json.createArrayBuilder();
+
+	// abbreviated versions are for references to objects
+	if (!fullVersion) {
+	    result.add("REF").add(obj.uniqueID());
+	    heap.put(obj.uniqueID(), obj);
+	    return result.build();
+	}
+
+	// full versions are for describing the objects themselves,
+	// in the heap
+
+        else if (obj instanceof ArrayReference) {
+            ArrayReference ao = (ArrayReference)obj;
+            int L = ao.length();
+            result.add("LIST");
+            heap_done.add(obj.uniqueID());
+
+            class Help {
+                // is it a zero integer?
+                boolean isz(Value v) {
+                    return v instanceof IntegerValue && ((IntegerValue)v).intValue() == 0;
+                }
+            }
+            Help help = new Help();
+
+
+            for (int i=0; i<L; i++) {
+                // hack for markov
+                if (help.isz(ao.getValue(i))) {
+                    // j is the next nonzero after i
+                    int j=i+1;
+                    while (j<L && help.isz(ao.getValue(j))) 
+                        j++;
+                    if (j-i >= 4) {
+                        result.add(convertValue(ao.getValue(i)));
+                        result.add(Json.createArrayBuilder().add("ELIDE").add(j-i-2));
+                        result.add(convertValue(ao.getValue(j-1)));
+                    }
+                    else for (int k=i; k<j; k++) 
+                        result.add(convertValue(ao.getValue(k)));
+                    i = j-1; // don't redo them all
+                }
+                else result.add(convertValue(ao.getValue(i)));
+            }
+            return result.build();
+	}
+        else if (obj instanceof StringReference) {
+            return Json.createArrayBuilder()
+                .add("HEAP_PRIMITIVE")
+                .add("String")
+                .add(jsonString(((StringReference)obj).value()))
+                .build();
+        }
+        // do we need special cases for ClassObjectReference, ThreadReference,.... ?
+        // stack and queue handling code by Will Gwozdz
+	else {
+	    if (obj.referenceType().name().equals("Queue")) {
+		heap_done.add(obj.uniqueID());
+		ReferenceType rt = obj.referenceType();
+		Field length = rt.fieldByName("N");
+		int queueLength = ((IntegerValue)obj.getValue(length)).value();
+		result.add("QUEUE");
+		if (queueLength > 0) {
+		    Field first = rt.fieldByName("first");
+		    ObjectReference thisNode = (ObjectReference)obj.getValue(first);
+		    ReferenceType nodeRT = thisNode.referenceType();
+		    Field val = nodeRT.fieldByName("item");
+		    Field next = nodeRT.fieldByName("next");
+		    for (int i = 0; i < queueLength; i++) {
+			Value v = thisNode.getValue(val);
+			result.add(convertValue(v));
+			thisNode = (ObjectReference) thisNode.getValue(next);
+		    }
+		}
+		return result.build();
+	    }
+
+	    if (obj.referenceType().name().equals("Stack")) {
+                heap_done.add(obj.uniqueID());
+                ReferenceType rt = obj.referenceType();
+                Field length = rt.fieldByName("N");
+                int queueLength = ((IntegerValue)obj.getValue(length)).value();
+                result.add("STACK");
+                if (queueLength > 0) {
+                    Field first = rt.fieldByName("first");
+                    ObjectReference thisNode = (ObjectReference)obj.getValue(first);
+                    ReferenceType nodeRT = thisNode.referenceType();
+                    Field val = nodeRT.fieldByName("item");
+                    Field next = nodeRT.fieldByName("next");
+                    for (int i = 0; i < queueLength; i++) {
+                        Value v = thisNode.getValue(val);
+                        result.add(convertValue(v));
+                        thisNode = (ObjectReference) thisNode.getValue(next);
+                    }
+                }
+                return result.build();
+            }
+
+            // st handling code by Will Gwozdz
+	    if (obj.referenceType().name().equals("ST")) {
+		heap_done.add(obj.uniqueID());
+		ReferenceType rt = obj.referenceType();
+		result.add("DICT");
+		Field first = rt.fieldByName("first");
+		ObjectReference firstNode = (ObjectReference)obj.getValue(first);
+
+		class stHandler {
+		    public void loadResultFromSymbolTree(ObjectReference n, JsonArrayBuilder result) {
+			if (n == null)
+			    return;
+			ReferenceType nt = n.referenceType();
+			Field left = nt.fieldByName("left");
+			Field right = nt.fieldByName("right");
+			Field key = nt.fieldByName("key");
+			Field value = nt.fieldByName("value");
+                        //System.out.println(n.uniqueID());
+			loadResultFromSymbolTree((ObjectReference)n.getValue(left), result);
+			if (n.getValue(value) != null) {
+			    result.add(Json.createArrayBuilder().add(convertValue(n.getValue(key)))
+				       .add(convertValue(n.getValue(value))).build());
+			}
+			loadResultFromSymbolTree((ObjectReference)n.getValue(right), result);
+		    }
+		}
+		
+		new stHandler().loadResultFromSymbolTree(firstNode, result); //recursively add key, value pairs to the result
+		return result.build();
+	    }
+
+	    // now deal with Objects. 
+	    heap_done.add(obj.uniqueID());
+            result.add("INSTANCE");
+            if (obj.referenceType().name().startsWith("java.lang.")
+                && wrapperTypes.contains(obj.referenceType().name().substring(10))) {
+                result.add(obj.referenceType().name().substring(10));
+                result.add(jsonArray("___NO_LABEL!___",//jsonArray("NO-LABEL"), // don't show a label or label cell for wrapper instance field
+                                     convertValue(obj.getValue(obj.referenceType().fieldByName("value")))));
+            }
+            else {
+                String fullName = obj.referenceType().name();
+                if (fullName.indexOf("$") > 0) {
+                    // inner, local, anonymous or lambda class
+                    if (fullName.contains("$$Lambda")) {
+                        fullName = "&lambda;" + fullName.substring(fullName.indexOf("$$Lambda")+9); // skip $$lambda$
+                        try {
+                            String interf = ((ClassType)obj.referenceType()).interfaces().get(0).name();
+                            if (interf.startsWith("java.util.function."))
+                                interf = interf.substring(19);
+                            
+                            fullName += " ["+interf+"]";
+                        }
+                        catch (Exception e) {}
+                    }
+                    // more cases here?
+                    else {
+                        fullName=fullName.substring(1+fullName.indexOf('$'));
+                        if (fullName.matches("[0-9]+"))
+                            fullName = "anonymous class " + fullName;
+                        else if (fullName.substring(0, 1).matches("[0-9]+"))
+                            fullName = "local class " + fullName.substring(1);
+                    }
+                }
+                result.add(fullName);
+            }
+            if (showGuts(obj.referenceType())) {
+                // fields: -inherited -hidden +synthetic
+                // visibleFields: +inherited -hidden +synthetic
+                // allFields: +inherited +hidden +repeated_synthetic
+                for (Map.Entry<Field,Value> me :  
+                          obj.getValues
+                         (
+                          showAllFields ? 
+                          obj.referenceType().allFields() :
+                          obj.referenceType().visibleFields() )
+                         .entrySet()
+                     ) {
+                    if (!me.getKey().isStatic()
+                        && (showAllFields || !me.getKey().isSynthetic())
+                        )
+                        result.add(Json.createArrayBuilder()
+                                   .add
+                                   ((
+                                     showAllFields ? 
+                                     me.getKey().declaringType().name()+"." : 
+                                     ""
+                                     )+me.getKey().name())
+                                   .add(convertValue(me.getValue())));
+                }
+            }
+            else if (obj.referenceType().name().equals("Stopwatch")) {
+                ReferenceType rt = obj.referenceType();
+                Field f = rt.fieldByName("startString");
+                result.add(Json.createArrayBuilder().add("started at").add(
+                                                                           Json.createArrayBuilder().add("NUMBER-LITERAL").add(
+                                                                                                                               convertValue(obj.getValue(f)))));
+            }
+	    return result.build();
+	}
+    }
+
+    private JsonArray convertVoid = jsonArray("VOID");
+    
+    private JsonArray jsonArray(Object... args) {
+	JsonArrayBuilder result = Json.createArrayBuilder();
+        for (Object o : args) {
+            if (o instanceof JsonValue)
+                result.add((JsonValue)o);
+            else if (o instanceof String)
+                result.add((String)o);
+            else throw new RuntimeException("Add more cases to JDI2JSON.jsonArray(Object...)");
+        }
+        return result.build();
+    } 
+
+    private JsonValue convertValue(Value v) {
+        if (v instanceof BooleanValue) {
+            if (((BooleanValue)v).value()==true) 
+                return JsonValue.TRUE;
+            else
+                return JsonValue.FALSE;
+        }
+        else if (v instanceof ByteValue) return jsonInt(((ByteValue)v).value());
+        else if (v instanceof ShortValue) return jsonInt(((ShortValue)v).value());
+        else if (v instanceof IntegerValue) return jsonInt(((IntegerValue)v).value());
+        // some longs can't be represented as doubles, they won't survive the json conversion
+        else if (v instanceof LongValue) return jsonArray("NUMBER-LITERAL", jsonString(""+((LongValue)v).value()));
+        // floats who hold integer values will end up as integers after json conversion
+        // also, this lets us pass "Infinity" and other IEEE non-numbers
+        else if (v instanceof FloatValue) return jsonArray("NUMBER-LITERAL", jsonString(""+((FloatValue)v).value()));
+        else if (v instanceof DoubleValue) return jsonArray("NUMBER-LITERAL", jsonString(""+((DoubleValue)v).value()));
+        else if (v instanceof CharValue) return jsonArray("CHAR-LITERAL", jsonString(((CharValue)v).value()+""));
+        else if (v instanceof VoidValue) return convertVoid;
+        else if (!(v instanceof ObjectReference)) return JsonValue.NULL; //not a hack
+        else if (showStringsAsValues && v instanceof StringReference)
+            return jsonString(((StringReference)v).value());
+        else {
+	    ObjectReference obj = (ObjectReference)v;
+            heap.put(obj.uniqueID(), obj);
+            return convertObject(obj, false);
+        }
+    }
+
+    static JsonObject compileErrorOutput(String usercode, String errmsg, long row, long col) {
+	return output(usercode,
+	    Json.createArrayBuilder().add
+	    (Json.createObjectBuilder()
+	     .add("line", ""+row)
+	     .add("event", "uncaught_exception")
+	     .add("offset", ""+col)
+	     .add("exception_msg", errmsg))
+                      .build()
+                      );
+    }
+
+    static String fakify(String realcode) {
+	String[] x = realcode.split("\n", -1);
+	for (int i=0; i<x.length; i++) {
+	    int pos = x[i].indexOf("//><");
+	    if (pos >= 0)
+		x[i] = x[i].substring(pos+4);	    
+	}
+	StringBuilder sb = new StringBuilder();
+	for (String s:x) {sb.append("\n");sb.append(s);}
+	return sb.substring(1);
+    }
+
+    static JsonObject output(String usercode, JsonArray trace) {
+        JsonObjectBuilder result = Json.createObjectBuilder();
+        result
+            .add("code", fakify(usercode))
+            .add("stdin", InMemory.stdin) 
+            .add("trace", trace);
+        if (userlogged != null) result.add("userlog", userlogged.toString());
+        return result.build();
+    }
+
+    String exceptionMessage(ExceptionEvent event) {
+        ObjectReference exc = event.exception();
+        ReferenceType excType = exc.referenceType();
+        try {
+            // this is the logical approach, but gives "Unexpected JDWP Error: 502" in invokeMethod
+            // even if we suspend-and-resume the thread t
+            /*ThreadReference t = event.thread();
+            Method mm = excType.methodsByName("getMessage").get(0);
+            t.suspend();
+            Value v = exc.invokeMethod(t, mm, new ArrayList<Value>(), 0);
+            t.resume();
+            StringReference sr = (StringReference) v;
+            String detail = sr.value();*/
+
+            // so instead we just look for the longest detailMessage
+            String detail = "";
+            for (Field ff: excType.allFields())
+                if (ff.name().equals("detailMessage")) {
+                    StringReference sr = (StringReference) exc.getValue(ff);
+                    String thisMsg = sr == null ? null : sr.value();
+                    if (thisMsg != null && thisMsg.length() > detail.length())
+                        detail = thisMsg;
+                }
+
+            if (detail.equals(""))
+                return excType.name(); // NullPointerException has no detail msg
+            
+            return excType.name()+": "+detail;
+        }
+        catch (Exception e) {
+            System.out.println("Failed to convert exception");
+            System.out.println(e);
+            e.printStackTrace(System.out);
+            for (Field ff : excType.visibleFields())
+                System.out.println(ff);
+            return "fail dynamic message lookup";
+        }
+    }
+
+
+
+    /* JSON utility methods */
+    
+    static JsonValue jsonInt(long l) {
+        return Json.createArrayBuilder().add(l).build().getJsonNumber(0);
+    }
+
+    static JsonValue jsonReal(double d) {
+        return Json.createArrayBuilder().add(d).build().getJsonNumber(0);
+    }
+
+    static JsonValue jsonString(String S) {
+        return Json.createArrayBuilder().add(S).build().getJsonString(0);
+    }
+    
+    static JsonObject jsonModifiedObject(JsonObject obj, String S, JsonValue v) {
+        JsonObjectBuilder result = Json.createObjectBuilder();
+        result.add(S, v);
+        for (Map.Entry<String, JsonValue> me : obj.entrySet()) {
+            if (!S.equals(me.getKey()))
+                result.add(me.getKey(), me.getValue());
+        }
+        return result.build();
+    }
+
+    // add at specified position, or end if -1
+    static JsonArray jsonModifiedArray(JsonArray arr, int tgt, JsonValue v) {
+        JsonArrayBuilder result = Json.createArrayBuilder();
+        int i = 0;
+        for (JsonValue w : arr) {
+            if (i == tgt) result.add(v);
+            else result.add(w);
+            i++;
+        }
+	if (tgt == -1)
+	    result.add(v);
+        return result.build();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/JSONTracingThread.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/JSONTracingThread.java
new file mode 100644
index 000000000..009881d4f
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/JSONTracingThread.java
@@ -0,0 +1,323 @@
+/*****************************************************************************
+
+traceprinter: a Java package to print traces of Java programs
+David Pritchard (daveagp@gmail.com), created May 2013
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+See README for documentation on this package.
+
+This file was originally based on 
+com.sun.tools.example.trace.EventThread, written by Robert Field.
+
+******************************************************************************/
+
+package traceprinter;
+
+import com.sun.jdi.*;
+import com.sun.jdi.request.*;
+import com.sun.jdi.event.*;
+
+import java.util.*;
+import java.io.*;
+import javax.json.*;
+
+/* 
+ * Original author: Robert Field, see
+ *
+ * This version: David Pritchard (http://dave-pritchard.net)
+ */
+
+public class JSONTracingThread extends Thread {
+
+    private final VirtualMachine vm;   // Running VM
+    private String[] no_breakpoint_requests = {"java.*", "javax.*", "sun.*", "com.sun.*", "Stack", "Queue", "ST",
+                                               "jdk.internal.org.objectweb.asm.*" // for creating lambda classes
+    };
+
+    private boolean connected = true;  // Connected to VM
+    private boolean vmDied = true;     // VMDeath occurred
+    
+    private EventRequestManager mgr; 
+    
+    private JDI2JSON jdi2json;
+
+    static int MAX_STEPS = 256;
+
+    static double MAX_WALLTIME_SECONDS = 15; // modified by pgbovine
+
+    private int steps = 0;
+
+    static int MAX_STACK_SIZE = 16;
+
+    private String usercode;
+
+    private InMemory im;
+
+    private VMCommander vmc;
+    
+    private JsonArrayBuilder output = Json.createArrayBuilder();
+
+    JSONTracingThread(InMemory im) {
+        super("event-handler");
+        this.vm = im.vm;
+        this.im = im;
+        this.usercode = im.usercode;
+        mgr = vm.eventRequestManager();
+        jdi2json = new JDI2JSON(vm,
+                                vm.process().getInputStream(),
+                                vm.process().getErrorStream(),
+                                im.optionsObject);
+        setEventRequests();
+    }
+    
+    void setEventRequests() {
+        ExceptionRequest excReq = mgr.createExceptionRequest(null, true, true);
+        excReq.setSuspendPolicy(EventRequest.SUSPEND_ALL);
+        for (String clob : no_breakpoint_requests)
+            excReq.addClassExclusionFilter(clob);
+        excReq.enable();
+
+        MethodEntryRequest menr = mgr.createMethodEntryRequest();
+        for (String clob : no_breakpoint_requests)
+            menr.addClassExclusionFilter(clob);
+        menr.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);
+        menr.enable();
+
+        MethodExitRequest mexr = mgr.createMethodExitRequest();
+        for (String clob : no_breakpoint_requests)
+            mexr.addClassExclusionFilter(clob);
+        mexr.setSuspendPolicy(EventRequest.SUSPEND_EVENT_THREAD);
+        mexr.enable();
+
+        ThreadDeathRequest tdr = mgr.createThreadDeathRequest();
+        tdr.setSuspendPolicy(EventRequest.SUSPEND_ALL);
+        tdr.enable();
+
+        ClassPrepareRequest cpr = mgr.createClassPrepareRequest();
+        for (String clob : no_breakpoint_requests)
+            cpr.addClassExclusionFilter(clob);
+        cpr.setSuspendPolicy(EventRequest.SUSPEND_ALL);
+        cpr.enable();
+    }
+    
+    @Override
+    public void run() {
+        StepRequest request = null;
+        final EventQueue queue = vm.eventQueue();
+        while (connected) {
+            try {
+                final EventSet eventSet = queue.remove();
+                for (Event ev : new Iterable<Event>(){public Iterator<Event> iterator(){return eventSet.eventIterator();}}) {
+
+
+                    //System.out.println("in run: " + steps+" "+ev+" "+(System.currentTimeMillis()-startTime));
+
+                    //        System.out.println(currentTimeMillis());
+                    if (System.currentTimeMillis() > MAX_WALLTIME_SECONDS * 1000 + InMemory.startTime) {
+                        output.add(Json.createObjectBuilder()
+                                   .add("exception_msg", "<exceeded max visualizer time limit>")
+                                   .add("event", "instruction_limit_reached"));
+                        
+                        try { 
+                            PrintStream out = new PrintStream(System.out, true, "UTF-8");
+                            String outputString = JDI2JSON.output(usercode, output.build()).toString();
+                            out.print(outputString);
+                        } catch (UnsupportedEncodingException e) {
+                            System.out.print("UEE");
+                            }
+                        System.exit(0);
+                        vm.exit(0); // might take a long time
+                    }
+
+
+                    handleEvent(ev);
+                    if (request != null && request.isEnabled()) {
+                        request.disable();
+                    }
+                    if (request != null) {
+                        mgr.deleteEventRequest(request);
+                        request = null;
+                    }
+                    if (ev instanceof LocatableEvent && 
+                        jdi2json.reportEventsAtLocation(((LocatableEvent)ev).location())
+                        || 
+                        (ev.toString().contains("NoopMain")))
+                        {
+                        request = mgr.
+                            createStepRequest(((LocatableEvent)ev).thread(),
+                                              StepRequest.STEP_MIN,
+                                              StepRequest.STEP_INTO);
+                        request.addCountFilter(1);  // next step only
+                        request.enable();
+                    }
+                }
+                eventSet.resume();
+            } catch (InterruptedException exc) {
+                exc.printStackTrace();
+                // Ignore
+            } catch (VMDisconnectedException discExc) {
+                handleDisconnectedException();
+                break;
+            }
+        }
+        String outputString = null;
+        try {
+            if (vmc == null) {
+                outputString = JDI2JSON.compileErrorOutput(usercode, "Internal error: there was an error starting the debuggee VM.", 0, 0).toString();
+            }
+            else {
+                vmc.join();
+                if (vmc.success == null) {
+                    outputString = JDI2JSON.compileErrorOutput(usercode, "Success is null?", 0, 0).toString();
+                }
+                else if (vmc.success == false) {
+                    outputString = JDI2JSON.compileErrorOutput(usercode, vmc.errorMessage, 1, 1).toString();
+                }
+                else {
+                    outputString = JDI2JSON.output(usercode, output.build()).toString();
+                }
+            }
+        }
+        catch (Exception e) {
+            e.printStackTrace(System.out);
+        }
+
+        try { 
+            PrintStream out = new PrintStream(System.out, true, "UTF-8");
+            out.print(outputString);
+        } catch (UnsupportedEncodingException e) {
+            System.out.print(outputString);
+        }
+    }
+
+    ThreadReference theThread = null;
+        
+    private Thread handleEvent(Event event) {
+        //System.out.println(event);
+        if (event instanceof ClassPrepareEvent) {
+            classPrepareEvent((ClassPrepareEvent)event);
+        } else if (event instanceof VMDeathEvent) {
+            vmDeathEvent((VMDeathEvent)event);
+        } else if (event instanceof VMDisconnectEvent) {
+            vmDisconnectEvent((VMDisconnectEvent)event);
+        } 
+        
+        if (event instanceof LocatableEvent) {
+            //System.out.println("in handle subloop: " + steps+" "+event);
+            if (theThread == null)
+                theThread = ((LocatableEvent)event).thread();
+            else {
+                if (theThread != ((LocatableEvent)event).thread())
+                    throw new RuntimeException("Assumes one thread!");
+            }
+            Location loc = ((LocatableEvent)event).location();
+            try {
+                if (loc.sourceName().equals("NoopMain.java") && steps == 0) {
+                    steps++;
+                    vmc = new VMCommander(im, theThread);
+                    vmc.start();
+                }
+            } catch (AbsentInformationException e) {}
+
+            if (steps < MAX_STEPS && jdi2json.reportEventsAtLocation(loc)
+                || event instanceof ExceptionEvent && ((ExceptionEvent)event).catchLocation()==null) {
+		try {
+                    for (JsonObject ep : jdi2json.convertExecutionPoint(event, loc, theThread)) {
+			output.add(ep);
+			steps++;	  
+                        int stackSize = ((JsonArray)ep.get("stack_to_render")).size();
+
+                        boolean quit = false;
+                        if (stackSize >= MAX_STACK_SIZE) {
+                            output.add(Json.createObjectBuilder()
+                                       .add("exception_msg", "<exceeded max visualizer stack size>")
+                                       .add("event", "instruction_limit_reached"));
+                            quit = true;
+                        }
+			if (steps == MAX_STEPS) {
+                            output.add(Json.createObjectBuilder()
+                                       .add("exception_msg", "<exceeded max visualizer step limit>")
+                                       .add("event", "instruction_limit_reached"));
+			    quit = true;
+			}
+                        if (quit)
+                            vm.exit(0);
+		    }
+                    if (event instanceof ExceptionEvent && ((ExceptionEvent)event).catchLocation()==null) {
+                        vm.exit(0);
+                    }
+		} catch (RuntimeException e) {
+		    System.out.println("Error " + e.toString());
+		    e.printStackTrace();
+		}
+            }
+        }
+        return null;
+    }
+    
+    /***
+     * A VMDisconnectedException has happened while dealing with
+     * another event. We need to flush the event queue, dealing only
+     * with exit events (VMDeath, VMDisconnect) so that we terminate
+     * correctly.
+     */
+    synchronized void handleDisconnectedException() {
+        EventQueue queue = vm.eventQueue();
+        while (connected) {
+            try {
+                EventSet eventSet = queue.remove();
+                EventIterator iter = eventSet.eventIterator();
+                while (iter.hasNext()) {
+                    Event event = iter.nextEvent();
+                    if (event instanceof VMDeathEvent) {
+                        vmDeathEvent((VMDeathEvent)event);
+                    } else if (event instanceof VMDisconnectEvent) {
+                        vmDisconnectEvent((VMDisconnectEvent)event);
+                    }
+                }
+                eventSet.resume(); // Resume the VM
+            } catch (InterruptedException exc) {
+                // ignore
+            }
+        }
+    }
+
+    private void classPrepareEvent(ClassPrepareEvent event)  {
+        //System.out.println("CPE!");
+        ReferenceType rt = event.referenceType();
+
+        if (!rt.name().equals("traceprinter.shoelace.NoopMain")) {
+            if (rt.name().equals("StdIn"))
+                jdi2json.stdinRT = rt;
+            
+            if (jdi2json.in_builtin_package(rt.name()))
+                return;
+        }
+
+        jdi2json.staticListable.add(rt);
+
+        //System.out.println(rt.name());
+        try {
+            for (Location loc : rt.allLineLocations()) {
+                BreakpointRequest br = mgr.createBreakpointRequest(loc);
+                br.enable();
+            }
+        }
+        catch (AbsentInformationException e) {
+            if (!rt.name().contains("$Lambda$"))
+                System.out.println("AIE!" + rt.name());
+        }
+    }
+
+    public void vmDeathEvent(VMDeathEvent event) {
+        vmDied = true;
+    }
+
+    public void vmDisconnectEvent(VMDisconnectEvent event) {
+        connected = false;
+    }
+    
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/LICENSE b/v4-cokapi/backends/java/java_jail/cp/traceprinter/LICENSE
new file mode 100644
index 000000000..2def0e883
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/LICENSE
@@ -0,0 +1,661 @@
+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU Affero General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Remote Network Interaction; Use with the GNU General Public License.
+
+  Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your version
+supports such interaction) an opportunity to receive the Corresponding
+Source of your version by providing access to the Corresponding Source
+from a network server at no charge, through some standard or customary
+means of facilitating copying of software.  This Corresponding Source
+shall include the Corresponding Source for any work covered by version 3
+of the GNU General Public License that is incorporated pursuant to the
+following paragraph.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU Affero General Public License from time to time.  Such new versions
+will be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/MEMORY-NOTES b/v4-cokapi/backends/java/java_jail/cp/traceprinter/MEMORY-NOTES
new file mode 100644
index 000000000..b0e6476d2
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/MEMORY-NOTES
@@ -0,0 +1,75 @@
+These are notes from when I tried to try to figure out how much
+memory is needed to run the java visualizer within a safeexec jail.
+I created these notes in summer 2013 but didn't post them until
+January 2014. Read them at your discretion. -- Dave Pritchard
+
+Memory usage, part 1
+====================
+By default, java may use a lot of memory. You can, sort of, try to
+control it. Here are the defaults on my machine:
+
+./java -XX:+PrintFlagsFinal -version | pcregrep "\b(MaxHeapSize|InitialHeapSize|ThreadStackSize)"
+
+prints the output
+
+    uintx InitialHeapSize                          := 130770560       {product}
+    uintx MaxHeapSize                              := 2092957696      {product}
+     intx ThreadStackSize                           = 1024            {pd product}
+
+which means that the heap uses 124M initially and 2G at maximum.
+
+You can control MaxHeapSize with "java -Xmx" (this is the most
+important for us) and the other two above with -Xms, -Xss.
+
+How much memory does Java actually use? How much can the user
+actually access? There is naturally some overhead between these two
+numbers, for the stuff running the VM, and for the default class
+files and stuff inside the VM. You can write
+
+    long maxBytes = Runtime.getRuntime().maxMemory();
+    System.out.println("Max memory: " + maxBytes / 1024 / 1024 + "M");
+
+I am not sure which of the controlling and reporting numbers
+correspond to user or user+VM memory. But as an example, for me, if
+I run java with -Xmx1024M, then the above reports "Max memory:
+910M", while the largest int[] that Java will let me allocate is
+about new int[175_000_000] (or about 7*10^8 bytes ~ 667M).
+
+Memory usage, part 2
+====================
+The way that traceprinter works, we actually have two VMs. One is
+the debugger, which is started first, and whose -Xmx setting is
+done by the command-line (or whoever calls java
+traceprinter.InMemory). The second, debugee, VM has its -Xmx set
+according to the options string used by LaunchingConnector.launch()
+in InMemory.launchVM.
+
+The -Xmx used for one VM affects only that machine, and does not
+affect the -Xmx for the other machine, as far as I can tell from
+testing.
+
+What is a reasonable setting for the maximum memory of our two
+machines? My system default, 2GB, seems a little excessive. All of
+the visualizer examples run with -Xmx128M on both VMs, so I am
+using this for now. (This gives the user about 80M of usable space,
+using the new int[] test.)
+
+Memory usage, part 3
+====================
+Now let's consider the fact that we want to run all of this under
+safeexec. On my machine, it appears that the limits enforced by
+safeexec successfully limit the sum of the memories used by both
+VMs. So the --mem option for safeexec must be at least 256*1024 K.
+However, there seems to be more overhead somewhere along the line,
+as,
+
+safeexec --mem 300000 gives "Could not create the Java Virtual Machine"
+
+safeexec --mem 400000 gives "# There is insufficient memory for the Java Runtime Environment to continue"
+                            (on safeexec's stdout)
+                      and/or "Command terminated by signal (6: SIGABRT)"
+                            (on safeexec's stderr)
+
+while
+
+safeexec --mem 500000 seems to work without any problems.
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/README b/v4-cokapi/backends/java/java_jail/cp/traceprinter/README
new file mode 100644
index 000000000..f6fdc6859
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/README
@@ -0,0 +1,55 @@
+traceprinter: a Java package to print traces of Java programs
+David Pritchard (daveagp@gmail.com), created May 2013
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+This project would not be possible without the package
+com.sun.tools.example.trace, written by Robert Field. 
+http://www.docjar.com/docs/api/com/sun/tools/example/trace/package-index.html
+The traceprinter package was initially created from that package. 
+
+Try the visualizer this was built for: 
+      http://cscircles.cemc.uwaterloo.ca/java-visualize/
+
+===
+NEWS
+
+A big update on June 11 2013 makes everything compile and execute in memory,
+so no writing to the file system is needed, and no considerations for
+simultaneous users are necessary.
+
+===
+WHAT DOES THIS PACKAGE DO AND WHAT DOES IT CONTAIN?
+
+traceprinter.InMemory: the main class. It takes java file source code 
+                       from standard input. Then it outputs a text (JSON)
+                       version of what the program didwhen executed.
+
+The output format is described here:
+  https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-trace-format.md
+This allows us to use the javascript frontend from OnlinePythonTutor
+to visualize Java instead of Python. 
+
+traceprinter.ramtools: compiles the java files to bytecode in memory.
+
+Then, InMemory uses the JDI to start a debuggee JVM, load the bytecode into
+it, and then execute it.
+
+traceprinter.VMCommander: drives injection and execution into debuggee.
+
+traceprinter.shoelace: contains all fixed code run by the debugee JVM.
+
+traceprinter.JSONTracingThread: event handling loop.
+
+traceprinter.JDI2JSON: used to convert everything to text output.
+ 
+===
+FLOW OF EXECUTION
+
+InMemory will get things started, and passes the ball briefly to 
+JSONTracingThread. But once the debuggee takes it first step, the
+VMCommander drives the execution of the debuggee VM. Again, the
+code it causes to run, will drive the event loop in JSONTracingThread
+some more, which in turn uses JDI2JSON to output things nicely.
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/TODO b/v4-cokapi/backends/java/java_jail/cp/traceprinter/TODO
new file mode 100644
index 000000000..d211b9ae7
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/TODO
@@ -0,0 +1,5 @@
+progressive Python labels: "Frames" only if more than one, "Objects" only if any, "Global" in variables only if function calls
+custom visualizations of Integer, Stack<>, ... ?
+options for visualizing synthetics?
+allow to reflow visualizer parts (already partly done?)
+caching executions
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/VMCommander.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/VMCommander.java
new file mode 100644
index 000000000..e03687463
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/VMCommander.java
@@ -0,0 +1,164 @@
+/*****************************************************************************
+
+traceprinter: a Java package to print traces of Java programs
+David Pritchard (daveagp@gmail.com), created May 2013
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+See README for documentation on this package.
+
+******************************************************************************/
+
+package traceprinter;
+
+import com.sun.jdi.*;
+import java.util.*;
+
+public class VMCommander extends Thread {
+
+    private InMemory im;
+    private ThreadReference tr;
+    private VirtualMachine vm;
+    private Map<String, byte[]> classesToLoad;
+    private String mainClassName;
+
+    private ClassType ClassLoader_;
+    private ObjectReference ClassLoader_SystemClassLoader;
+
+    Boolean success;
+    String errorMessage;
+
+    public VMCommander(InMemory im, ThreadReference tr) {
+        this.im = im;
+        this.tr = tr;
+        this.vm = im.vm;
+        this.classesToLoad = im.bytecode;
+        this.mainClassName = im.mainClass;
+    }
+
+    ObjectReference VMCommandee_instance = null;
+    public void run() {
+        try {
+            vm.suspend();
+
+            // first, make instance of ByteClassLoader
+            ClassLoader_ = classType("java.lang.ClassLoader");
+            ClassLoader_SystemClassLoader = (ObjectReference) 
+                call_s(ClassLoader_, "getSystemClassLoader");
+
+            ObjectReference ByteClassLoader_instance = instantiate("traceprinter.shoelace.ByteClassLoader");
+
+            // load the classes from their bytecodes
+            for (Map.Entry<String, byte[]> me : classesToLoad.entrySet())
+                call_i(ByteClassLoader_instance, "define", vm.mirrorOf(me.getKey()), mirrorOf(vm, me.getValue()));
+
+            // load and instantiate Commandee. very similar to above!
+            VMCommandee_instance = instantiate("traceprinter.shoelace.VMCommandee");
+
+            ArrayReference mirrorOfArgs = newArray("java.lang.String", im.argsArray.size());
+            for (int i=0; i<im.argsArray.size(); i++)
+                mirrorOfArgs.setValue(i, vm.mirrorOf(im.argsArray.getString(i)));
+            
+            StringReference result;
+            try {
+                result = (StringReference)
+                    call_i(VMCommandee_instance, 
+                           "runMain", 
+                           vm.mirrorOf(mainClassName), 
+                           mirrorOfArgs, 
+                           vm.mirrorOf(im.givenStdin));
+            }
+            catch (VMDisconnectedException e) {
+                // means we exceeded step limit
+                success = true; // visualization is fine
+                return;
+            }
+            /*            // uncaught exception that originates in non-user code (e.g. scanner runs out)
+            catch (InvocationException e) {
+                System.out.println(e.toString());
+                return;
+            }
+            */
+            if (result == null) {
+                success = true;
+            }
+            else {
+                success = false;
+                errorMessage = "Error: " + result.value();
+            }
+
+            vm.resume();
+        }
+        catch (Exception e) {
+            e.printStackTrace(System.out);
+            throw new RuntimeException(e.toString());
+        }
+    }
+
+    // utility methods
+
+    // calls the default no-arg constructor
+    private ObjectReference instantiate(String x)
+        throws InvalidTypeException, ClassNotLoadedException, 
+               IncompatibleThreadStateException, InvocationException { 
+        ObjectReference Class_x = (ObjectReference)
+            call_i(ClassLoader_SystemClassLoader, ClassLoader_, "loadClass", 
+                   vm.mirrorOf(x));
+        ArrayReference ConstructorArray_x = (ArrayReference)
+            call_i(Class_x, "getConstructors");
+        ObjectReference Constructor_x = (ObjectReference)
+            ConstructorArray_x.getValue(0);
+        ObjectReference x_instance = (ObjectReference)
+            call_i(Constructor_x, "newInstance");       
+        return x_instance;
+    }
+
+    // call instance method 
+    private Value call_i(ObjectReference o, String s, Value... v) 
+        throws InvalidTypeException, ClassNotLoadedException, 
+               IncompatibleThreadStateException, InvocationException {
+        return call_i(o, (ClassType) o.referenceType(), s, v);
+    }
+ 
+    // call instance method w.r.t. specific class
+    private Value call_i(ObjectReference o, ClassType t, String s, Value... v) 
+        throws InvalidTypeException, ClassNotLoadedException, 
+               IncompatibleThreadStateException, InvocationException {
+        Method m = t.methodsByName(s).get(0);
+        return o.invokeMethod(tr, m, lv(v), 0);
+    }
+
+    // call static method
+    private Value call_s(ClassType t, String s, Value... v) 
+        throws InvalidTypeException, ClassNotLoadedException, 
+               IncompatibleThreadStateException, InvocationException {
+        Method m = t.methodsByName(s).get(0);
+        return t.invokeMethod(tr, m, lv(v), 0);
+    }
+
+    private ArrayReference newArray(String elementType, int length) {
+        ArrayType at = (ArrayType)
+            vm.classesByName(elementType+"[]").get(0);
+        return at.newInstance(length);
+    }
+
+    private ClassType classType(String className) {
+        return (ClassType) vm.classesByName(className).get(0);
+    }
+
+    private List<Value> lv(Value... vs) {
+        return Arrays.asList(vs);
+    }
+
+    private ArrayReference mirrorOf(VirtualMachine vm, byte[] bytes) 
+        throws InvalidTypeException, ClassNotLoadedException {
+        ArrayReference result = newArray("byte", bytes.length);
+        for (int i=0; i < bytes.length; i++)
+            result.setValue(i, vm.mirrorOf(bytes[i]));
+        return result;
+    }
+
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/expected-output.txt b/v4-cokapi/backends/java/java_jail/cp/traceprinter/expected-output.txt
new file mode 100644
index 000000000..f9ec4072a
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/expected-output.txt
@@ -0,0 +1 @@
+{"code":"public class Test { public static void main(String[] args) { int x = 3; x += x; } }","trace":[{"stdout":"","event":"call","line":1,"stack_to_render":[{"func_name":"main:1","encoded_locals":{"args":["REF",392]},"ordered_varnames":["args"],"parent_frame_id_list":[],"is_highlighted":true,"is_zombie":false,"is_parent":false,"unique_hash":"1","frame_id":1}],"globals":{},"ordered_globals":[],"func_name":"main","heap":{"392":["LIST"]}},{"stdout":"","event":"step_line","line":1,"stack_to_render":[{"func_name":"main:1","encoded_locals":{"args":["REF",392]},"ordered_varnames":["args"],"parent_frame_id_list":[],"is_highlighted":true,"is_zombie":false,"is_parent":false,"unique_hash":"2","frame_id":2}],"globals":{},"ordered_globals":[],"func_name":"main","heap":{"392":["LIST"]}},{"stdout":"","event":"step_line","line":1,"stack_to_render":[{"func_name":"main:1","encoded_locals":{"args":["REF",392],"x":3},"ordered_varnames":["args","x"],"parent_frame_id_list":[],"is_highlighted":true,"is_zombie":false,"is_parent":false,"unique_hash":"4","frame_id":4}],"globals":{},"ordered_globals":[],"func_name":"main","heap":{"392":["LIST"]}},{"stdout":"","event":"step_line","line":1,"stack_to_render":[{"func_name":"main:1","encoded_locals":{"args":["REF",392],"x":6},"ordered_varnames":["args","x"],"parent_frame_id_list":[],"is_highlighted":true,"is_zombie":false,"is_parent":false,"unique_hash":"8","frame_id":8}],"globals":{},"ordered_globals":[],"func_name":"main","heap":{"392":["LIST"]}},{"stdout":"","event":"return","line":1,"stack_to_render":[{"func_name":"main:1","encoded_locals":{"args":["REF",392],"x":6,"__return__":["VOID"]},"ordered_varnames":["args","x","__return__"],"parent_frame_id_list":[],"is_highlighted":true,"is_zombie":false,"is_parent":false,"unique_hash":"9","frame_id":9}],"globals":{},"ordered_globals":[],"func_name":"main","heap":{"392":["LIST"]}}],"userlog":"Debugger VM maxMemory: 1774M\n"}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/CompileToBytes.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/CompileToBytes.java
new file mode 100644
index 000000000..06842b547
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/CompileToBytes.java
@@ -0,0 +1,202 @@
+package traceprinter.ramtools;
+
+import javax.tools.*;
+import java.io.*;
+import java.util.*;
+import javax.json.*;
+
+public class CompileToBytes {
+
+    public Writer compilerOutput = null; 
+    // a Writer for additional output from the compiler; use System.err if null
+
+    public DiagnosticListener<? super JavaFileObject> diagnosticListener = null;
+    // a diagnostic (warning, etc) listener; if null use the compiler's default method for reporting diagnostics
+
+    public Iterable<String> options = null;
+    // args[] for javac, null means no options
+        
+    public Iterable<String> classesForAnnotation = null;
+    // names of classes to be processed by annotation processing, null means no class names
+
+    public Map<String, byte[]> bytecodes;
+    // output variable: the class names and bytecodes generated by compiling
+    
+    private boolean used = false;
+
+    public CompileToBytes() {}
+
+    /***
+        Compiles a single source file to bytecode.
+        Returns null if compilation failed (same as JavaCompiler.getTask.call => false).
+        Otherwise, returns bytecode for files defined as a result of compiling.
+    ***/
+
+    // takes a class name and its source code
+    public Map<String, byte[]> compileFile(String className, String sourceCode) {
+        return compileFiles(new String[][] {{className, sourceCode}});
+    }
+
+    public Map<String, byte[]> compileFiles(String[][] classCodePairs) {
+        if (used) throw new RuntimeException("You already used this CompileToBytes.");
+        used = true;
+        
+        ArrayList<RAMJavaFile> sourceFiles = new ArrayList<>();
+        for (String[] pair : classCodePairs)
+            sourceFiles.add(new RAMJavaFile(pair[0], pair[1]));
+        
+        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
+
+        RAMClassFileManager fileManager = new
+            RAMClassFileManager(compiler
+                                .getStandardFileManager(null, null, null));
+
+        boolean result = compiler.getTask(compilerOutput, fileManager, diagnosticListener, 
+                                          options, classesForAnnotation, sourceFiles).call();
+
+        if (!result) return null;
+
+        bytecodes = new TreeMap<>();
+        for (Map.Entry<String, RAMClassFile> me : fileManager.contents.entrySet()) {
+            bytecodes.put(me.getKey(), me.getValue().getBytes());
+        }
+
+        return bytecodes;
+    }
+
+
+    /* main() Method.
+
+    standard input: A Json Object (UTF-8) 
+    - whose keys are class names (optionally package qualified with . or /)
+    - whose values are java source code
+
+    Note that if there is additional data after the object, it will be silently ignored (javax.json doesn't seem to have a way to detect this)
+   
+    compiles these files (against the current classpath)
+
+    output: A Json Object
+    - status: "Internal Error", "Compile-Time Error", "Success"
+    - if "Internal Error": errmsg: describing the internal error
+    - if "Compile-Time Error": error (errmsg, filename, row, col, startpos, pos, endpos)
+    - if "Success": bytecodes, [warning]
+    
+    bytecodes is a map from class names (possibly including . and $) to bytecodes
+
+    */
+
+    /* sample StdIn:
+
+    {"Hello":"public class Hello{public static void main(String[]args){System.out.println(\"Hello\");}}","Multi":"public class Multi{}class Extra{}","Outer":"public class Outer{public class Inner{}}","pckg.Packed":"package pckg;public class Packed{}","Anon":"public class Anon{{new Anon(){void foo(){}};}}"}
+
+    you can also use pckg/Packed or Packed for pckg.Packed
+
+    for a compiler error:
+    {"A":"public class A{{int x; x = 5.0;}}"}
+
+    to generate a warning:
+    {"Warn":"public class Warn {{ Class<Byte> x = (Class)Integer.class; }}"}
+
+    */
+
+
+    public static void main(String[] args) {
+        InputStreamReader isr;
+        try {
+            isr = new InputStreamReader(System.in, "UTF-8");
+        }
+        catch (UnsupportedEncodingException e) {
+            System.out.println(Json
+                               .createObjectBuilder()
+                               .add("status", "Internal Error")
+                               .add("errmsg", "Could not set UTF-8 encoding")
+                               .build());
+            return;
+        }
+
+        String[][] pairs;
+        try {
+            JsonReader jr = Json.createReader(isr);
+            JsonObject sourceFiles = jr.readObject();
+            pairs = new String[sourceFiles.size()][2];
+            int i = 0;
+            for (Map.Entry<String, JsonValue> pair : sourceFiles.entrySet()) {
+                pairs[i][0] = pair.getKey();
+                if (! (pair.getValue() instanceof JsonString)) {
+                    throw new RuntimeException("For key " + pair.getKey() +
+                                               " value is a " +
+                                               pair.getKey().getClass()+":\n"+
+                                               pair.getKey().toString());
+                }
+                pairs[i][1] = ((JsonString)pair.getValue()).getString();
+                i++;
+            }
+        }
+        catch (Throwable t) {
+            System.out.println(Json
+                               .createObjectBuilder()
+                               .add("status", "Internal Error")
+                               .add("errmsg", "Could not parse input: " + t)
+                               .build());
+            return;            
+        }
+        
+        CompileToBytes c2b = new CompileToBytes();
+
+        c2b.compilerOutput = new StringWriter();
+        c2b.options = Arrays.asList("-g -Xmaxerrs 1".split(" "));
+        DiagnosticCollector<JavaFileObject> errorCollector = new DiagnosticCollector<>();
+        c2b.diagnosticListener = errorCollector;
+
+        Map<String, byte[]> classMap = c2b.compileFiles(pairs);
+
+        JsonObject jerr = null;
+        for (Diagnostic<? extends JavaFileObject> err : errorCollector.getDiagnostics()) {
+            jerr = Json.createObjectBuilder()
+                .add("filename", err.getSource().toString())
+                .add("row", err.getLineNumber())
+                .add("col", err.getColumnNumber())
+                .add("errmsg", err.getMessage(null))
+                .add("startpos", err.getStartPosition())
+                .add("pos", err.getPosition())
+                .add("endpos", err.getEndPosition())
+                .build();
+            if (err.getKind() == Diagnostic.Kind.ERROR) {
+                System.out.println(Json
+                                   .createObjectBuilder()
+                                   .add("status", "Compile-time Error")
+                                   .add("error", jerr)
+                                   .build());
+                return;
+            }
+        }
+
+        if (classMap == null && jerr == null) {
+            System.out.println(Json
+                               .createObjectBuilder()
+                               .add("status", "Internal Error")
+                               .add("errmsg", "Did not compile, but gave no errors!")
+                               .build());
+            return;
+        }
+        
+        JsonObjectBuilder classFiles = Json.createObjectBuilder();
+        for (Map.Entry<String, byte[]> pair : classMap.entrySet()) {
+            byte[] bytes = pair.getValue();
+            char[] hexEncoding = new char[bytes.length*2];
+            char[] hexArray = "0123456789ABCDEF".toCharArray();
+            for (int i = 0; i < bytes.length; i++) {
+                int v = bytes[i] & 0xFF;
+                hexEncoding[i*2] = hexArray[v >>> 4];
+                hexEncoding[i*2 + 1] = hexArray[v & 0x0F];
+            }
+            classFiles.add(pair.getKey(), new String(hexEncoding));
+        }
+
+        JsonObjectBuilder job = Json.createObjectBuilder();
+        job.add("status", "Success")
+            .add("bytecodes", classFiles.build());
+        if (jerr != null) job.add("warning", jerr);
+        System.out.println(job.build());
+    }
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMClassFile.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMClassFile.java
new file mode 100644
index 000000000..4ec71dc4d
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMClassFile.java
@@ -0,0 +1,56 @@
+package traceprinter.ramtools;
+import javax.tools.*;
+import java.io.*;
+import java.net.URI;
+
+/***
+ This is the same as
+  JavaClassObject
+ posted by Miron Sadziak, August 20 2009, 
+ http://www.javablogging.com/dynamic-in-memory-compilation/
+***/
+
+public class RAMClassFile extends SimpleJavaFileObject {
+
+    /**
+     * Byte code created by the compiler will be stored in this
+     * ByteArrayOutputStream so that we can later get the
+     * byte array out of it
+     * and put it in the memory as an instance of our class.
+     */
+    protected final ByteArrayOutputStream bos = new ByteArrayOutputStream();
+
+    /**
+     * Registers the compiled class object under URI
+     * containing the class full name
+     *
+     * @param name
+     *            Full name of the compiled class
+     * @param kind
+     *            Kind of the data. It will be CLASS in our case
+     */
+    public RAMClassFile(String name, Kind kind) {
+        super(URI.create("string:///" + name.replace('.', '/')
+                         + kind.extension), kind);
+    }
+
+    /**
+     * Will be used by our file manager to get the byte code that
+     * can be put into memory to instantiate our class
+     *
+     * @return compiled byte code
+     */
+    public byte[] getBytes() {
+        return bos.toByteArray();
+    }
+
+    /**
+     * Will provide the compiler with an output stream that leads
+     * to our byte array. This way the compiler will write everything
+     * into the byte array that we will instantiate later
+     */
+    @Override
+    public OutputStream openOutputStream() throws IOException {
+        return bos;
+    }
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMClassFileManager.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMClassFileManager.java
new file mode 100644
index 000000000..037a67367
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMClassFileManager.java
@@ -0,0 +1,71 @@
+package traceprinter.ramtools;
+import javax.tools.*;
+import java.io.*;
+import java.util.*;
+import java.security.SecureClassLoader;
+
+/***
+ This is based on 
+  ClassFileManager
+ posted by Miron Sadziak, August 20 2009, 
+ http://www.javablogging.com/dynamic-in-memory-compilation/
+
+ The difference is that this allows multiple class files
+ (for example when you have inner classes), and exposes the
+ compiled bytes of them.
+***/
+
+public class RAMClassFileManager 
+    extends ForwardingJavaFileManager<JavaFileManager> {
+    /**
+     * Instance of JavaClassObject that will store the
+     * compiled bytecode of our class
+     */
+    
+
+    // ideally, you would make this private and provide an immutable getter
+    public Map<String, RAMClassFile> contents = new TreeMap<>();
+
+    /**
+     * Will initialize the manager with the specified
+     * standard java file manager
+     *
+     * @param standardManger
+     */
+    public RAMClassFileManager(StandardJavaFileManager standardManager) {
+        super(standardManager);
+    }
+
+    /**
+     * Will be used by us to get the class loader for our
+     * compiled class. It creates an anonymous class
+     * extending the SecureClassLoader which uses the
+     * byte code created by the compiler and stored in
+     * the RAMClassFile, and returns the Class for it
+     */
+    @Override
+    public ClassLoader getClassLoader(Location location) {
+        return new SecureClassLoader() {
+           @Override
+           protected Class<?> findClass(String name)
+                throws ClassNotFoundException {
+                byte[] b = contents.get(name).getBytes();
+                return super.defineClass(name, b, 0, b.length);
+           }
+            };
+    }
+
+    /**
+     * Gives the compiler an instance of the RAMClassFile
+     * so that the compiler can write the byte code into it.
+     */
+    @Override
+    public JavaFileObject getJavaFileForOutput
+     (Location location, String className, JavaFileObject.Kind kind, 
+      FileObject sibling) throws IOException {
+        RAMClassFile jclassObject = new RAMClassFile(className, kind);
+        contents.put(className, jclassObject);
+        return jclassObject;
+    }
+
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMJavaFile.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMJavaFile.java
new file mode 100644
index 000000000..98083572c
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMJavaFile.java
@@ -0,0 +1,50 @@
+package traceprinter.ramtools;
+import javax.tools.SimpleJavaFileObject;
+import java.net.URI;
+
+/***
+ This is the same as
+  CharSequenceJavaFileObject
+ posted by Miron Sadziak, August 20 2009, 
+ http://www.javablogging.com/dynamic-in-memory-compilation/
+***/
+
+public class RAMJavaFile extends SimpleJavaFileObject {
+
+    /**
+     * CharSequence representing the source code to be compiled
+     */
+    private CharSequence content;
+
+    private String className;
+
+    /**
+     * This constructor will store the source code in the
+     * internal "content" variable and register it as a
+     * source code, using a URI containing the class full name
+     *
+     * @param className
+     *            name of the public class in the source code
+     * @param content
+     *            source code to compile
+     */
+    public RAMJavaFile(String className, CharSequence content) {
+        super(URI.create("string:///" + className.replace('.', '/')
+                         + Kind.SOURCE.extension), Kind.SOURCE);
+        this.content = content;
+        this.className = className;
+    }
+
+    public String toString() {
+        return className+".java";
+    }
+
+    /**
+     * Answers the CharSequence to be compiled. It will give
+     * the source code stored in variable "content"
+     */
+    @Override
+    public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+        return content;
+    }
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMRun.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMRun.java
new file mode 100644
index 000000000..6e084c01f
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/RAMRun.java
@@ -0,0 +1,124 @@
+package traceprinter.ramtools;
+import java.util.Scanner;
+
+/****
+Usage: 
+ - takes one or more command line arguments, the first of which is a class name;
+ - takes stdin that is a JSON object with these fields:
+    "bytecodes" is a map from class names to bytecodes
+    "stdin" (optional) is standard input for the program being called
+ - loads those classes and runs args[0]'s public static void main(String[] args) on args[1..]
+ - the first line of output either starts with 'Error' or with 'Success'
+ - Success means public static main(String[]) was found (we called Method.invoke), not that the invoke was trouble-free
+
+Sample usage: let's say we feed CompileToBytes this input:
+
+{"A":"public class A{public static void main(String[]args){System.out.println(\"hi\");}}"}
+
+it produces this output:
+
+{"status":"Success","bytecodes":{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}}
+
+If we pipe this into RAMRun A
+
+it prints out
+
+Success: found A.main. Invoking...
+hi
+
+*/
+
+
+import traceprinter.shoelace.*;
+import traceprinter.ramtools.*;
+import java.lang.reflect.*;
+import java.io.*;
+import java.util.Map;
+import javax.json.*;
+
+public class RAMRun {
+    public static byte[] base16toBytes(String data) {
+        byte[] result = new byte[data.length()/2];
+        
+        for (int i=0; i<data.length()/2; i++)
+            result[i] = (byte)Integer.parseInt(data.substring(2*i, 2*i+2), 16);
+
+        return result;
+    }
+
+    public static void main(String[] args) {
+        JsonObject jo = null;
+        try {
+            jo = (JsonObject)
+                Json.createReader(new InputStreamReader
+                                  (System.in, "UTF-8"))
+                .readObject();
+        } 
+        catch (IOException e) {
+            System.out.println("Error: Could not parse input");
+            e.printStackTrace();
+        }
+        Method main = null;
+        try {
+            JsonObject classes = jo.getJsonObject("bytecodes");
+
+            if (classes == null) {
+                System.out.println("Error: Could not find 'bytecodes' in input. Input was:");
+                System.out.println(jo);
+                return;
+            }
+
+            ByteClassLoader bcl = new ByteClassLoader();
+            
+            for (Map.Entry<String, JsonValue> me : classes.entrySet()) {
+                String classname = me.getKey();
+                if (! (me.getValue() instanceof JsonString)) {
+                    System.out.println("Error: for key " + me.getKey() + " value is " + me.getValue().getClass() +":\n"
+                                       + me.getValue().toString());
+                    return; 
+                }
+                String classfile = ((JsonString)me.getValue()).getString();
+
+                bcl.define(classname, base16toBytes(classfile));
+            }
+
+            // doesn't actually work.
+            //Thread.currentThread().setContextClassLoader(bcl);
+            //Class definedClass = Class.forName("A");
+            
+            Class mainClass = ByteClassLoader.publicFindClass(args[0]);
+
+            main = mainClass.getMethod("main", String[].class);
+        }
+        catch (Throwable t) {
+            System.out.println("Error: could not find class or main method");
+            t.printStackTrace();
+            return;
+        }
+        if (main.getModifiers() != (Modifier.PUBLIC | Modifier.STATIC)) {
+            System.out.println("Error: main is not public static");
+            return;
+        }
+        try {
+            String[] newargs = new String[args.length-1];
+            for (int i=0; i<newargs.length; i++)
+                newargs[i] = args[i+1];
+            System.out.println("Success: found "+args[0]+".main. Invoking...");
+
+            String stdinForInvoke = "";
+            if (jo.containsKey("stdin"))
+                stdinForInvoke = jo.getString("stdin");
+            try {
+                System.setIn(new java.io.ByteArrayInputStream(stdinForInvoke.getBytes("UTF-8")));
+            }
+            catch (UnsupportedEncodingException e) {throw new RuntimeException(e.toString());}
+
+            main.invoke(null, (Object)newargs);
+        } catch (IllegalAccessException e) {
+            //System.out.println("Error: illegal access exception");
+            e.printStackTrace();
+        } catch (InvocationTargetException e) {
+            e.getCause().printStackTrace();
+        }
+    }
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/README b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/README
new file mode 100644
index 000000000..4843e5bfd
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/ramtools/README
@@ -0,0 +1,21 @@
+traceprinter.ramtools: compiling Java in-memory
+
+Based on "Dynamic in-memory compilation," a blog post
+from August 20, 2009 by Miro Sadziak.
+http://www.javablogging.com/dynamic-in-memory-compilation/
+
+Author of this version: David Pritchard (daveagp@gmail.com),
+created June 2013.
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See ../LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+Try the visualizer this was built for: 
+      http://cscircles.cemc.uwaterloo.ca/java_visualize/
+
+== traceprinter.ramtools ==
+CompileToBytes : the main class
+RAMJavaFile : simulates a java source code file (.java)
+RAMClassFile : simulates a compiled java class file (.class)
+RAMClassFileManager : collection of RAMClassFiles
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/ByteClassLoader.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/ByteClassLoader.java
new file mode 100644
index 000000000..247ea276e
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/ByteClassLoader.java
@@ -0,0 +1,40 @@
+package traceprinter.shoelace;
+import java.util.*;
+public class ByteClassLoader extends ClassLoader {
+
+/*** 
+ A class loader that uses bytecode directly
+ Based on: http://stackoverflow.com/questions/1781091/
+***/
+
+    static ByteClassLoader instance;
+
+    private TreeMap<String, byte[]> definitions = new TreeMap<>();
+
+    public ByteClassLoader() {
+        instance = this;
+    }
+
+    public void define(String className, byte[] bytecode) {
+        definitions.put(className, bytecode);
+    }
+
+    @Override
+    protected Class<?> findClass(String name) throws ClassNotFoundException {
+        byte[] bytecode = definitions.get(name);
+        if (bytecode == null) {
+            StringBuilder sb = new StringBuilder();
+            sb.append("Asked ByteClassLoader for undefined class " + name);
+            sb.append(" --- Known: ");
+            for (String S : definitions.keySet())
+                sb.append(S+" ");
+            throw new RuntimeException(sb.toString());
+        }
+        return defineClass(name, bytecode, 0, bytecode.length); 
+    }
+
+    public static Class<?> publicFindClass(final String name) throws ClassNotFoundException {
+        return instance.findClass(name);
+    }
+
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/NoopMain.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/NoopMain.java
new file mode 100644
index 000000000..1efceafec
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/NoopMain.java
@@ -0,0 +1,18 @@
+package traceprinter.shoelace;
+
+import java.lang.reflect.*;
+
+/***
+This is just a basic class with a main method,
+sent as the main class to com.sun.jdi.CommandLineLaunch.
+Once main is entered, we use JDI to start doing what we really want.
+ ***/
+
+public class NoopMain {
+
+    public static void main(String[] args) {
+        // this is just a stub, but it's important
+        // since we call it to get things going
+    }
+
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/README b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/README
new file mode 100644
index 000000000..2fa160c9a
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/README
@@ -0,0 +1,18 @@
+traceprinter.shoelace: a mini-bootstrap for a Java visualizer
+David Pritchard (daveagp@gmail.com), created May 2013
+
+The contents of this directory are released under the GNU Affero 
+General Public License, versions 3 or later. See LICENSE or visit:
+http://www.gnu.org/licenses/agpl.html
+
+Try the visualizer this was built for: 
+      http://cscircles.cemc.uwaterloo.ca/java-visualize/
+
+== About this subpackage ==
+These are the classes from traceprinter that are loaded by the target 
+(debugee) VM being stepped through. 
+
+== traceprinter.shoelace ==
+NoopMain: just an empty main method. We use JDI to open a JVM on this class.
+ByteClassLoader: allows loading class files from memory (byte[] bytecode)
+VMCommandee: receives commands from VMCommander
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/VMCommandee.java b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/VMCommandee.java
new file mode 100644
index 000000000..473acd061
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/shoelace/VMCommandee.java
@@ -0,0 +1,67 @@
+package traceprinter.shoelace;
+
+import java.lang.reflect.*;
+
+/***
+This class receives commands from traceprinter.VMCommander
+telling what user code should be run. (Note that VMCommander
+is in the debugger JVM, and VMCommandee is in the debugee.)
+***/
+
+public class VMCommandee {
+
+    // returns null if everything worked
+    // else, returns an error message
+    public String runMain(String className, String[] args, String stdin) {
+
+        Class<?> target;
+        try {
+            target = ByteClassLoader.publicFindClass(className);
+        } catch (ClassNotFoundException e) {
+            return "Internal error: main class "+className+" not found";
+        }
+
+        Method main;
+        try {
+            main = target.getMethod("main", new Class[]{String[].class});
+        } catch (NoSuchMethodException e) { 
+            return "Class "+className+" needs public static void main(String[] args)";
+        }
+
+        if (stdin != null)
+            try {
+                System.setIn(new java.io.ByteArrayInputStream(stdin.getBytes("UTF-8")));
+            }
+            catch (SecurityException | java.io.UnsupportedEncodingException e) {
+                return "Internal error: can't setIn";
+            }
+
+        int modifiers = main.getModifiers();
+        if (modifiers != (Modifier.PUBLIC | Modifier.STATIC))
+            return "Class "+className+" needs public static void main(String[] args)";
+        try {
+            // first is null since it is a static method
+            main.invoke(null, new Object[]{args});
+            return null;
+        }
+        catch (IllegalAccessException e) {
+            return "Internal error invoking main";
+        }
+        catch (InvocationTargetException e) {
+            if (e.getTargetException() instanceof RuntimeException)
+                throw (RuntimeException)(e.getTargetException());
+
+            
+            java.io.StringWriter sw = new java.io.StringWriter();
+            java.io.PrintWriter pw = new java.io.PrintWriter(sw);
+            e.getTargetException().printStackTrace(pw);
+
+            return "Internal error handling error " + e.getTargetException() + sw.toString();
+
+            //if (e.getTargetException() instanceof Error)
+            //  throw (Error)(e.getTargetException());
+            
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/traceprinter/test-input.txt b/v4-cokapi/backends/java/java_jail/cp/traceprinter/test-input.txt
new file mode 100644
index 000000000..9894aabbf
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/traceprinter/test-input.txt
@@ -0,0 +1,7 @@
+{
+"usercode":
+ "public class Test { public static void main(String[] args) { int x = 3; x += x; } }",
+"options": {},
+"args": [],
+"stdin": ""
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryIn.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryIn.java
new file mode 100644
index 000000000..12ec11539
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryIn.java
@@ -0,0 +1,339 @@
+/*************************************************************************
+ *  Compilation:  javac BinaryIn.java
+ *  Execution:    java BinaryIn input output
+ *  
+ *  This library is for reading binary data from an input stream.
+ *
+ *  % java BinaryIn http://introcs.cs.princeton.edu/cover.jpg output.jpg
+ *
+ *************************************************************************/
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.Socket;
+import java.net.URL;
+import java.net.URLConnection;
+
+
+/**
+ *  <i>Binary input</i>. This class provides methods for reading
+ *  in bits from a binary input stream, either
+ *  one bit at a time (as a <tt>boolean</tt>),
+ *  8 bits at a time (as a <tt>byte</tt> or <tt>char</tt>),
+ *  16 bits at a time (as a <tt>short</tt>),
+ *  32 bits at a time (as an <tt>int</tt> or <tt>float</tt>), or
+ *  64 bits at a time (as a <tt>double</tt> or <tt>long</tt>).
+ *  <p>
+ *  The binary input stream can be from standard input, a filename,
+ *  a URL name, a Socket, or an InputStream.
+ *  <p>
+ *  All primitive types are assumed to be represented using their 
+ *  standard Java representations, in big-endian (most significant
+ *  byte first) order.
+ *  <p>
+ *  The client should not intermix calls to <tt>BinaryIn</tt> with calls
+ *  to <tt>In</tt>; otherwise unexpected behavior will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryIn {
+    private static final int EOF = -1;   // end of file
+
+    private BufferedInputStream in;      // the input stream
+    private int buffer;                  // one character buffer
+    private int N;                       // number of bits left in buffer
+
+   /**
+     * Create a binary input stream from standard input.
+     */
+    public BinaryIn() {
+        in = new BufferedInputStream(System.in);
+        fillBuffer();
+    }
+
+   /**
+     * Create a binary input stream from an InputStream.
+     */
+    public BinaryIn(InputStream is) {
+        in = new BufferedInputStream(is);
+        fillBuffer();
+    }
+
+   /**
+     * Create a binary input stream from a socket.
+     */
+    public BinaryIn(Socket socket) {
+        try {
+            InputStream is = socket.getInputStream();
+            in = new BufferedInputStream(is);
+            fillBuffer();
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + socket);
+        }
+    }
+
+   /**
+     * Create a binary input stream from a URL.
+     */
+    public BinaryIn(URL url) {
+        try {
+            URLConnection site = url.openConnection();
+            InputStream is     = site.getInputStream();
+            in = new BufferedInputStream(is);
+            fillBuffer();
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + url);
+        }
+    }
+
+   /**
+     * Create a binary input stream from a filename or URL name.
+     */
+    public BinaryIn(String s) {
+
+        try {
+            // first try to read file from local file system
+            File file = new File(s);
+            if (file.exists()) {
+                FileInputStream fis = new FileInputStream(file);
+                in = new BufferedInputStream(fis);
+                fillBuffer();
+                return;
+            }
+
+            // next try for files included in jar
+            URL url = getClass().getResource(s);
+
+            // or URL from web
+            if (url == null) { url = new URL(s); }
+
+            URLConnection site = url.openConnection();
+            InputStream is     = site.getInputStream();
+            in = new BufferedInputStream(is);
+            fillBuffer();
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + s);
+        }
+    }
+
+    private void fillBuffer() {
+        try { buffer = in.read(); N = 8; }
+        catch (IOException e) { System.err.println("EOF"); buffer = EOF; N = -1; }
+    }
+
+   /**
+     * Does the binary input stream exist?
+     */
+    public boolean exists()  {
+        return in != null;
+    }
+
+   /**
+     * Returns true if the binary input stream is empty.
+     * @return true if and only if the binary input stream is empty
+     */
+    public boolean isEmpty() {
+        return buffer == EOF;
+    }
+
+   /**
+     * Read the next bit of data from the binary input stream and return as a boolean.
+     * @return the next bit of data from the binary input stream as a <tt>boolean</tt>
+     * @throws RuntimeException if the input stream is empty
+     */
+    public boolean readBoolean() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N--;
+        boolean bit = ((buffer >> N) & 1) == 1;
+        if (N == 0) fillBuffer();
+        return bit;
+    }
+
+   /**
+     * Read the next 8 bits from the binary input stream and return as an 8-bit char.
+     * @return the next 8 bits of data from the binary input stream as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available
+     */
+    public char readChar() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        // special case when aligned byte
+        if (N == 8) {
+            int x = buffer;
+            fillBuffer();
+            return (char) (x & 0xff);
+        }
+
+        // combine last N bits of current buffer with first 8-N bits of new buffer
+        int x = buffer;
+        x <<= (8-N);
+        int oldN = N;
+        fillBuffer();
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N = oldN;
+        x |= (buffer >>> N);
+        return (char) (x & 0xff);
+        // the above code doesn't quite work for the last character if N = 8
+        // because buffer will be -1
+    }
+
+
+   /**
+     * Read the next r bits from the binary input stream and return as an r-bit character.
+     * @param r number of bits to read.
+     * @return the next r bits of data from the binary input streamt as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than r bits available
+     */
+    public char readChar(int r) {
+        if (r < 1 || r > 16) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 8 case
+        if (r == 8) return readChar();
+
+        char x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+
+   /**
+     * Read the remaining bytes of data from the binary input stream and return as a string. 
+     * @return the remaining bytes of data from the binary input stream as a <tt>String</tt>
+     * @throws RuntimeException if the input stream is empty or if the number of bits
+     * available is not a multiple of 8 (byte-aligned)
+     */
+    public String readString() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        StringBuilder sb = new StringBuilder();
+        while (!isEmpty()) {
+            char c = readChar();
+            sb.append(c);
+        }
+        return sb.toString();
+    }
+
+
+   /**
+     * Read the next 16 bits from the binary input stream and return as a 16-bit short.
+     * @return the next 16 bits of data from the binary standard input as a <tt>short</tt>
+     * @throws RuntimeException if there are fewer than 16 bits available
+     */
+    public short readShort() {
+        short x = 0;
+        for (int i = 0; i < 2; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 32 bits from the binary input stream and return as a 32-bit int.
+     * @return the next 32 bits of data from the binary input stream as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available
+     */
+    public int readInt() {
+        int x = 0;
+        for (int i = 0; i < 4; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next r bits from the binary input stream return as an r-bit int.
+     * @param r number of bits to read.
+     * @return the next r bits of data from the binary input stream as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than r bits available on standard input
+     */
+    public int readInt(int r) {
+        if (r < 1 || r > 32) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 32 case
+        if (r == 32) return readInt();
+
+        int x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 64 bits from the binary input stream and return as a 64-bit long.
+     * @return the next 64 bits of data from the binary input stream as a <tt>long</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available
+     */
+    public long readLong() {
+        long x = 0;
+        for (int i = 0; i < 8; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 64 bits from the binary input stream and return as a 64-bit double.
+     * @return the next 64 bits of data from the binary input stream as a <tt>double</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available
+     */
+    public double readDouble() {
+        return Double.longBitsToDouble(readLong());
+    }
+
+   /**
+     * Read the next 32 bits from standard input and return as a 32-bit float.
+     * @return the next 32 bits of data from standard input as a <tt>float</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available on standard input
+     */
+    public float readFloat() {
+        return Float.intBitsToFloat(readInt());
+    }
+
+
+   /**
+     * Read the next 8 bits from the binary input stream and return as an 8-bit byte.
+     * @return the next 8 bits of data from the binary input stream as a <tt>byte</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available
+     */
+    public byte readByte() {
+        char c = readChar();
+        byte x = (byte) (c & 0xff);
+        return x;
+    }
+    
+   /**
+     * Test client. Reads in the name of a file or url (first command-line
+     * argument) and writes it to a file (second command-line argument).
+     */
+    public static void main(String[] args) {
+        BinaryIn  in  = new BinaryIn(args[0]);
+        BinaryOut out = new BinaryOut(args[1]);
+
+        // read one 8-bit char at a time
+        while (!in.isEmpty()) {
+            char c = in.readChar();
+            out.write(c);
+        }
+        out.flush();
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryOut.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryOut.java
new file mode 100644
index 000000000..f02f300d4
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryOut.java
@@ -0,0 +1,304 @@
+/*************************************************************************
+ *  Compilation:  javac BinaryOut.java
+ *  Execution:    java BinaryOut
+ *
+ *  Write binary data to an output stream, either one 1-bit boolean,
+ *  one 8-bit char, one 32-bit int, one 64-bit double, one 32-bit float,
+ *  or one 64-bit long at a time. The output stream can be standard
+ *  output, a file, an OutputStream or a Socket.
+ *
+ *  The bytes written are not aligned.
+ *
+ *  [wayne 7.17.2013] fixed bugs in write(char x, int r) and 
+ *  write(int x, int r) to add return statement for (r == 8)
+ *  and (r == 32) cases, respectively.
+ *
+ *************************************************************************/
+
+import java.io.BufferedOutputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.net.Socket;
+
+/**
+ *  <i>Binary output</i>. This class provides methods for converting
+ *  primtive type variables (<tt>boolean</tt>, <tt>byte</tt>, <tt>char</tt>,
+ *  <tt>int</tt>, <tt>long</tt>, <tt>float</tt>, and <tt>double</tt>)
+ *  to sequences of bits and writing them to an output stream.
+ *  The output stream can be standard output, a file, an OutputStream or a Socket.
+ *  Uses big-endian (most-significant byte first).
+ *  <p>
+ *  The client must <tt>flush()</tt> the output stream when finished writing bits.
+ *  <p>
+ *  The client should not intermixing calls to <tt>BinaryOut</tt> with calls
+ *  to <tt>Out</tt>; otherwise unexpected behavior will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryOut {
+
+    private BufferedOutputStream out;  // the output stream
+    private int buffer;                // 8-bit buffer of bits to write out
+    private int N;                     // number of bits remaining in buffer
+
+
+   /**
+     * Create a binary output stream from an OutputStream.
+     */
+    public BinaryOut(OutputStream os) {
+        out = new BufferedOutputStream(os);
+    }
+
+   /**
+     * Create a binary output stream from standard output.
+     */
+    public BinaryOut() {
+        out = new BufferedOutputStream(System.out);
+    }
+
+   /**
+     * Create a binary output stream from a filename.
+     */
+    public BinaryOut(String s) {
+        try {
+            OutputStream os = new FileOutputStream(s);
+            out = new BufferedOutputStream(os);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Create a binary output stream from a Socket.
+     */
+    public BinaryOut(Socket socket) {
+        try {
+            OutputStream os = socket.getOutputStream();
+            out = new BufferedOutputStream(os);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+
+   /**
+     * Write the specified bit to the binary output stream.
+     */
+    private void writeBit(boolean bit) {
+        // add bit to buffer
+        buffer <<= 1;
+        if (bit) buffer |= 1;
+
+        // if buffer is full (8 bits), write out as a single byte
+        N++;
+        if (N == 8) clearBuffer();
+    } 
+
+   /**
+     * Write the 8-bit byte to the binary output stream.
+     */
+    private void writeByte(int x) {
+        assert x >= 0 && x < 256;
+
+        // optimized if byte-aligned
+        if (N == 0) {
+            try { out.write(x); }
+            catch (IOException e) { e.printStackTrace(); }
+            return;
+        }
+
+        // otherwise write one bit at a time
+        for (int i = 0; i < 8; i++) {
+            boolean bit = ((x >>> (8 - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+    // write out any remaining bits in buffer to the binary output stream, padding with 0s
+    private void clearBuffer() {
+        if (N == 0) return;
+        if (N > 0) buffer <<= (8 - N);
+        try { out.write(buffer); }
+        catch (IOException e) { e.printStackTrace(); }
+        N = 0;
+        buffer = 0;
+    }
+
+   /**
+     * Flush the binary output stream, padding 0s if number of bits written so far
+     * is not a multiple of 8.
+     */
+    public void flush() {
+        clearBuffer();
+        try { out.flush(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Close and flush the binary output stream. Once it is closed, you can no longer write bits.
+     */
+    public void close() {
+        flush();
+        try { out.close(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+
+   /**
+     * Write the specified bit to the binary output stream.
+     * @param x the <tt>boolean</tt> to write.
+     */
+    public void write(boolean x) {
+        writeBit(x);
+    } 
+
+   /**
+     * Write the 8-bit byte to the binary output stream.
+     * @param x the <tt>byte</tt> to write.
+     */
+    public void write(byte x) {
+        writeByte(x & 0xff);
+    }
+
+   /**
+     * Write the 32-bit int to the binary output stream.
+     * @param x the <tt>int</tt> to write.
+     */
+    public void write(int x) {
+        writeByte((x >>> 24) & 0xff);
+        writeByte((x >>> 16) & 0xff);
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the r-bit int to the binary output stream.
+     * @param x the <tt>int</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 32.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public void write(int x, int r) {
+        if (r == 32) { write(x); return; }
+        if (r < 1 || r > 32)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+
+   /**
+     * Write the 64-bit double to the binary output stream.
+     * @param x the <tt>double</tt> to write.
+     */
+    public void write(double x) {
+        write(Double.doubleToRawLongBits(x));
+    }
+
+   /**
+     * Write the 64-bit long to the binary output stream.
+     * @param x the <tt>long</tt> to write.
+     */
+    public void write(long x) {
+        writeByte((int) ((x >>> 56) & 0xff));
+        writeByte((int) ((x >>> 48) & 0xff));
+        writeByte((int) ((x >>> 40) & 0xff));
+        writeByte((int) ((x >>> 32) & 0xff));
+        writeByte((int) ((x >>> 24) & 0xff));
+        writeByte((int) ((x >>> 16) & 0xff));
+        writeByte((int) ((x >>>  8) & 0xff));
+        writeByte((int) ((x >>>  0) & 0xff));
+    }
+
+   /**
+     * Write the 32-bit float to the binary output stream.
+     * @param x the <tt>float</tt> to write.
+     */
+    public void write(float x) {
+        write(Float.floatToRawIntBits(x));
+    }
+
+   /**
+     * Write the 16-bit int to the binary output stream.
+     * @param x the <tt>short</tt> to write.
+     */
+    public void write(short x) {
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the 8-bit char to the binary output stream.
+     * @param x the <tt>char</tt> to write.
+     * @throws RuntimeException if <tt>x</tt> is not betwen 0 and 255.
+     */
+    public void write(char x) {
+        if (x < 0 || x >= 256) throw new RuntimeException("Illegal 8-bit char = " + x);
+        writeByte(x);
+    }
+
+   /**
+     * Write the r-bit char to the binary output stream.
+     * @param x the <tt>char</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 16.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public void write(char x, int r) {
+        if (r == 8) { write(x); return; }
+        if (r < 1 || r > 16)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+   /**
+     * Write the string of 8-bit characters to the binary output stream.
+     * @param s the <tt>String</tt> to write.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 255.
+     */
+    public void write(String s) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i));
+    }
+
+
+   /**
+     * Write the String of r-bit characters to the binary output stream.
+     * @param s the <tt>String</tt> to write.
+     * @param r the number of relevants bits in each character.
+     * @throws RuntimeException if r is not between 1 and 16.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 2<sup>r</sup> - 1.
+     */
+    public void write(String s, int r) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i), r);
+    }
+
+
+   /**
+     * Test client. Read bits from standard input and write to the file
+     * specified on command line.
+     */
+    public static void main(String[] args) {
+
+        // create binary output stream to write to file
+        String filename = args[0];
+        BinaryOut out = new BinaryOut(filename);
+        BinaryIn  in  = new BinaryIn();
+
+        // read from standard input and write to file
+        while (!in.isEmpty()) {
+            char c = in.readChar();
+            out.write(c);
+        }
+        out.flush();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryStdIn.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryStdIn.java
new file mode 100644
index 000000000..7e79878cc
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryStdIn.java
@@ -0,0 +1,267 @@
+/*************************************************************************
+ *  Compilation:  javac BinaryStdIn.java
+ *  Execution:    java BinaryStdIn < input > output
+ *  
+ *  Supports reading binary data from standard input.
+ *
+ *  % java BinaryStdIn < input.jpg > output.jpg
+ *  % diff input.jpg output.jpg
+ *
+ *************************************************************************/
+
+import java.io.BufferedInputStream;
+import java.io.IOException;
+
+/**
+ *  <i>Binary standard input</i>. This class provides methods for reading
+ *  in bits from standard input, either one bit at a time (as a <tt>boolean</tt>),
+ *  8 bits at a time (as a <tt>byte</tt> or <tt>char</tt>),
+ *  16 bits at a time (as a <tt>short</tt>), 32 bits at a time
+ *  (as an <tt>int</tt> or <tt>float</tt>), or 64 bits at a time (as a
+ *  <tt>double</tt> or <tt>long</tt>).
+ *  <p>
+ *  All primitive types are assumed to be represented using their 
+ *  standard Java representations, in big-endian (most significant
+ *  byte first) order.
+ *  <p>
+ *  The client should not intermix calls to <tt>BinaryStdIn</tt> with calls
+ *  to <tt>StdIn</tt> or <tt>System.in</tt>;
+ *  otherwise unexpected behavior will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryStdIn {
+    private static BufferedInputStream in = new BufferedInputStream(System.in);
+    private static final int EOF = -1;    // end of file
+
+    private static int buffer;            // one character buffer
+    private static int N;                 // number of bits left in buffer
+
+    // static initializer
+    static { fillBuffer(); }
+
+    // don't instantiate
+    private BinaryStdIn() { }
+
+    private static void fillBuffer() {
+        try { buffer = in.read(); N = 8; }
+        catch (IOException e) { System.out.println("EOF"); buffer = EOF; N = -1; }
+    }
+
+   /**
+     * Close this input stream and release any associated system resources.
+     */
+    public static void close() {
+        try {
+            in.close();
+        }
+        catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException("Could not close BinaryStdIn");
+        }
+    }
+
+   /**
+     * Returns true if standard input is empty.
+     * @return true if and only if standard input is empty
+     */
+    public static boolean isEmpty() {
+        return buffer == EOF;
+    }
+
+   /**
+     * Read the next bit of data from standard input and return as a boolean.
+     * @return the next bit of data from standard input as a <tt>boolean</tt>
+     * @throws RuntimeException if standard input is empty
+     */
+    public static boolean readBoolean() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N--;
+        boolean bit = ((buffer >> N) & 1) == 1;
+        if (N == 0) fillBuffer();
+        return bit;
+    }
+
+   /**
+     * Read the next 8 bits from standard input and return as an 8-bit char.
+     * Note that <tt>char</tt> is a 16-bit type;
+     * to read the next 16 bits as a char, use <tt>readChar(16)</tt>
+     * @return the next 8 bits of data from standard input as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available on standard input
+     */
+    public static char readChar() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        // special case when aligned byte
+        if (N == 8) {
+            int x = buffer;
+            fillBuffer();
+            return (char) (x & 0xff);
+        }
+
+        // combine last N bits of current buffer with first 8-N bits of new buffer
+        int x = buffer;
+        x <<= (8-N);
+        int oldN = N;
+        fillBuffer();
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+        N = oldN;
+        x |= (buffer >>> N);
+        return (char) (x & 0xff);
+        // the above code doesn't quite work for the last character if N = 8
+        // because buffer will be -1
+    }
+
+   /**
+     * Read the next r bits from standard input and return as an r-bit character.
+     * @param r number of bits to read.
+     * @return the next r bits of data from standard input as a <tt>char</tt>
+     * @throws RuntimeException if there are fewer than r bits available on standard input
+     * @throws RuntimeException unless 1 &le; r &le; 16
+     */
+    public static char readChar(int r) {
+        if (r < 1 || r > 16) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 8 case
+        if (r == 8) return readChar();
+
+        char x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+   /**
+     * Read the remaining bytes of data from standard input and return as a string. 
+     * @return the remaining bytes of data from standard input as a <tt>String</tt>
+     * @throws RuntimeException if standard input is empty or if the number of bits
+     * available on standard input is not a multiple of 8 (byte-aligned)
+     */
+    public static String readString() {
+        if (isEmpty()) throw new RuntimeException("Reading from empty input stream");
+
+        StringBuilder sb = new StringBuilder();
+        while (!isEmpty()) {
+            char c = readChar();
+            sb.append(c);
+        }
+        return sb.toString();
+    }
+
+
+   /**
+     * Read the next 16 bits from standard input and return as a 16-bit short.
+     * @return the next 16 bits of data from standard input as a <tt>short</tt>
+     * @throws RuntimeException if there are fewer than 16 bits available on standard input
+     */
+    public static short readShort() {
+        short x = 0;
+        for (int i = 0; i < 2; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 32 bits from standard input and return as a 32-bit int.
+     * @return the next 32 bits of data from standard input as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available on standard input
+     */
+    public static int readInt() {
+        int x = 0;
+        for (int i = 0; i < 4; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next r bits from standard input and return as an r-bit int.
+     * @param r number of bits to read.
+     * @return the next r bits of data from standard input as a <tt>int</tt>
+     * @throws RuntimeException if there are fewer than r bits available on standard input
+     * @throws RuntimeException unless 1 &le; r &le; 32
+     */
+    public static int readInt(int r) {
+        if (r < 1 || r > 32) throw new RuntimeException("Illegal value of r = " + r);
+
+        // optimize r = 32 case
+        if (r == 32) return readInt();
+
+        int x = 0;
+        for (int i = 0; i < r; i++) {
+            x <<= 1;
+            boolean bit = readBoolean();
+            if (bit) x |= 1;
+        }
+        return x;
+    }
+
+   /**
+     * Read the next 64 bits from standard input and return as a 64-bit long.
+     * @return the next 64 bits of data from standard input as a <tt>long</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available on standard input
+     */
+    public static long readLong() {
+        long x = 0;
+        for (int i = 0; i < 8; i++) {
+            char c = readChar();
+            x <<= 8;
+            x |= c;
+        }
+        return x;
+    }
+
+
+   /**
+     * Read the next 64 bits from standard input and return as a 64-bit double.
+     * @return the next 64 bits of data from standard input as a <tt>double</tt>
+     * @throws RuntimeException if there are fewer than 64 bits available on standard input
+     */
+    public static double readDouble() {
+        return Double.longBitsToDouble(readLong());
+    }
+
+   /**
+     * Read the next 32 bits from standard input and return as a 32-bit float.
+     * @return the next 32 bits of data from standard input as a <tt>float</tt>
+     * @throws RuntimeException if there are fewer than 32 bits available on standard input
+     */
+    public static float readFloat() {
+        return Float.intBitsToFloat(readInt());
+    }
+
+
+   /**
+     * Read the next 8 bits from standard input and return as an 8-bit byte.
+     * @return the next 8 bits of data from standard input as a <tt>byte</tt>
+     * @throws RuntimeException if there are fewer than 8 bits available on standard input
+     */
+    public static byte readByte() {
+        char c = readChar();
+        byte x = (byte) (c & 0xff);
+        return x;
+    }
+    
+   /**
+     * Test client. Reads in a binary input file from standard input and writes
+     * it to standard output.
+     */
+    public static void main(String[] args) {
+
+        // read one 8-bit char at a time
+        while (!BinaryStdIn.isEmpty()) {
+            char c = BinaryStdIn.readChar();
+            BinaryStdOut.write(c);
+        }
+        BinaryStdOut.flush();
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryStdOut.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryStdOut.java
new file mode 100644
index 000000000..38f31d520
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/BinaryStdOut.java
@@ -0,0 +1,256 @@
+/*************************************************************************
+ *  Compilation:  javac BinaryStdOut.java
+ *  Execution:    java BinaryStdOut
+ *
+ *  Write binary data to standard output, either one 1-bit boolean,
+ *  one 8-bit char, one 32-bit int, one 64-bit double, one 32-bit float,
+ *  or one 64-bit long at a time.
+ *
+ *  The bytes written are not aligned.
+ *
+ *************************************************************************/
+
+import java.io.BufferedOutputStream;
+import java.io.IOException;
+
+/**
+ *  <i>Binary standard output</i>. This class provides methods for converting
+ *  primtive type variables (<tt>boolean</tt>, <tt>byte</tt>, <tt>char</tt>,
+ *  <tt>int</tt>, <tt>long</tt>, <tt>float</tt>, and <tt>double</tt>)
+ *  to sequences of bits and writing them to standard output.
+ *  Uses big-endian (most-significant byte first).
+ *  <p>
+ *  The client must <tt>flush()</tt> the output stream when finished writing bits.
+ *  <p>
+ *  The client should not intermixing calls to <tt>BinaryStdOut</tt> with calls
+ *  to <tt>StdOut</tt> or <tt>System.out</tt>; otherwise unexpected behavior 
+ *  will result.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class BinaryStdOut {
+    private static BufferedOutputStream out = new BufferedOutputStream(System.out);
+
+    private static int buffer;     // 8-bit buffer of bits to write out
+    private static int N;          // number of bits remaining in buffer
+
+    // don't instantiate
+    private BinaryStdOut() { }
+
+   /**
+     * Write the specified bit to standard output.
+     */
+    private static void writeBit(boolean bit) {
+        // add bit to buffer
+        buffer <<= 1;
+        if (bit) buffer |= 1;
+
+        // if buffer is full (8 bits), write out as a single byte
+        N++;
+        if (N == 8) clearBuffer();
+    } 
+
+   /**
+     * Write the 8-bit byte to standard output.
+     */
+    private static void writeByte(int x) {
+        assert x >= 0 && x < 256;
+
+        // optimized if byte-aligned
+        if (N == 0) {
+            try { out.write(x); }
+            catch (IOException e) { e.printStackTrace(); }
+            return;
+        }
+
+        // otherwise write one bit at a time
+        for (int i = 0; i < 8; i++) {
+            boolean bit = ((x >>> (8 - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+    // write out any remaining bits in buffer to standard output, padding with 0s
+    private static void clearBuffer() {
+        if (N == 0) return;
+        if (N > 0) buffer <<= (8 - N);
+        try { out.write(buffer); }
+        catch (IOException e) { e.printStackTrace(); }
+        N = 0;
+        buffer = 0;
+    }
+
+   /**
+     * Flush standard output, padding 0s if number of bits written so far
+     * is not a multiple of 8.
+     */
+    public static void flush() {
+        clearBuffer();
+        try { out.flush(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Flush and close standard output. Once standard output is closed, you can no
+     * longer write bits to it.
+     */
+    public static void close() {
+        flush();
+        try { out.close(); }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+
+   /**
+     * Write the specified bit to standard output.
+     * @param x the <tt>boolean</tt> to write.
+     */
+    public static void write(boolean x) {
+        writeBit(x);
+    } 
+
+   /**
+     * Write the 8-bit byte to standard output.
+     * @param x the <tt>byte</tt> to write.
+     */
+    public static void write(byte x) {
+        writeByte(x & 0xff);
+    }
+
+   /**
+     * Write the 32-bit int to standard output.
+     * @param x the <tt>int</tt> to write.
+     */
+    public static void write(int x) {
+        writeByte((x >>> 24) & 0xff);
+        writeByte((x >>> 16) & 0xff);
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the r-bit int to standard output.
+     * @param x the <tt>int</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 32.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public static void write(int x, int r) {
+        if (r == 32) { write(x); return; }
+        if (r < 1 || r > 32)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+
+
+
+
+   /**
+     * Write the 64-bit double to standard output.
+     * @param x the <tt>double</tt> to write.
+     */
+    public static void write(double x) {
+        write(Double.doubleToRawLongBits(x));
+    }
+
+   /**
+     * Write the 64-bit long to standard output.
+     * @param x the <tt>long</tt> to write.
+     */
+    public static void write(long x) {
+        writeByte((int) ((x >>> 56) & 0xff));
+        writeByte((int) ((x >>> 48) & 0xff));
+        writeByte((int) ((x >>> 40) & 0xff));
+        writeByte((int) ((x >>> 32) & 0xff));
+        writeByte((int) ((x >>> 24) & 0xff));
+        writeByte((int) ((x >>> 16) & 0xff));
+        writeByte((int) ((x >>>  8) & 0xff));
+        writeByte((int) ((x >>>  0) & 0xff));
+    }
+
+   /**
+     * Write the 32-bit float to standard output.
+     * @param x the <tt>float</tt> to write.
+     */
+    public static void write(float x) {
+        write(Float.floatToRawIntBits(x));
+    }
+
+   /**
+     * Write the 16-bit int to standard output.
+     * @param x the <tt>short</tt> to write.
+     */
+    public static void write(short x) {
+        writeByte((x >>>  8) & 0xff);
+        writeByte((x >>>  0) & 0xff);
+    }
+
+   /**
+     * Write the 8-bit char to standard output.
+     * @param x the <tt>char</tt> to write.
+     * @throws RuntimeException if <tt>x</tt> is not betwen 0 and 255.
+     */
+    public static void write(char x) {
+        if (x < 0 || x >= 256) throw new RuntimeException("Illegal 8-bit char = " + x);
+        writeByte(x);
+    }
+
+   /**
+     * Write the r-bit char to standard output.
+     * @param x the <tt>char</tt> to write.
+     * @param r the number of relevant bits in the char.
+     * @throws RuntimeException if <tt>r</tt> is not between 1 and 16.
+     * @throws RuntimeException if <tt>x</tt> is not between 0 and 2<sup>r</sup> - 1.
+     */
+    public static void write(char x, int r) {
+        if (r == 8) { write(x); return; }
+        if (r < 1 || r > 16)        throw new RuntimeException("Illegal value for r = " + r);
+        if (x < 0 || x >= (1 << r)) throw new RuntimeException("Illegal " + r + "-bit char = " + x);
+        for (int i = 0; i < r; i++) {
+            boolean bit = ((x >>> (r - i - 1)) & 1) == 1;
+            writeBit(bit);
+        }
+    }
+
+   /**
+     * Write the string of 8-bit characters to standard output.
+     * @param s the <tt>String</tt> to write.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 255.
+     */
+    public static void write(String s) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i));
+    }
+
+   /**
+     * Write the String of r-bit characters to standard output.
+     * @param s the <tt>String</tt> to write.
+     * @param r the number of relevants bits in each character.
+     * @throws RuntimeException if r is not between 1 and 16.
+     * @throws RuntimeException if any character in the string is not
+     * between 0 and 2<sup>r</sup> - 1.
+     */
+    public static void write(String s, int r) {
+        for (int i = 0; i < s.length(); i++)
+            write(s.charAt(i), r);
+    }
+
+   /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+        int T = Integer.parseInt(args[0]);
+        // write to standard output
+        for (int i = 0; i < T; i++) {
+            BinaryStdOut.write(i);
+        }
+        BinaryStdOut.flush();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Draw.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Draw.java
new file mode 100644
index 000000000..342171dfa
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Draw.java
@@ -0,0 +1,1141 @@
+/*************************************************************************
+ *  Compilation:  javac Draw.java
+ *  Execution:    java Draw
+ *
+ *  Drawing library. This class provides a basic capability for creating
+ *  drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *  This is the object-oriented version of standard draw; it supports
+ *  multiple indepedent drawing windows.
+ *
+ *  Todo
+ *  ----
+ *    -  Add support for gradient fill, etc.
+ *
+ *  Remarks
+ *  -------
+ *    -  don't use AffineTransform for rescaling since it inverts
+ *       images and strings
+ *    -  careful using setFont in inner loop within an animation -
+ *       it can cause flicker
+ *
+ *************************************************************************/
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import java.io.*;
+import java.net.*;
+import java.util.LinkedList;
+import java.util.TreeSet;
+import javax.imageio.ImageIO;
+import javax.swing.*;
+
+/**
+ *  <i>Draw</i>. This class provides a basic capability for
+ *  creating drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *  This is the object-oriented version of standard draw; it supports
+ *  multiple indepedent drawing windows.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+
+import java.util.ArrayList;
+
+public final class Draw implements ActionListener, MouseListener, MouseMotionListener, KeyListener {
+
+    // pre-defined colors
+    public static final Color BLACK      = Color.BLACK;
+    public static final Color BLUE       = Color.BLUE;
+    public static final Color CYAN       = Color.CYAN;
+    public static final Color DARK_GRAY  = Color.DARK_GRAY;
+    public static final Color GRAY       = Color.GRAY;
+    public static final Color GREEN      = Color.GREEN;
+    public static final Color LIGHT_GRAY = Color.LIGHT_GRAY;
+    public static final Color MAGENTA    = Color.MAGENTA;
+    public static final Color ORANGE     = Color.ORANGE;
+    public static final Color PINK       = Color.PINK;
+    public static final Color RED        = Color.RED;
+    public static final Color WHITE      = Color.WHITE;
+    public static final Color YELLOW     = Color.YELLOW;
+
+    /**
+     * Shade of blue used in Introduction to Programming in Java.
+     * The RGB values are (9, 90, 166).
+     */
+    public static final Color BOOK_BLUE = new Color(9, 90, 166);
+    
+    /**
+     * Shade of red used in Algorithms 4th edition.
+     * The RGB values are (173, 32, 24).
+     */
+    public static final Color BOOK_RED = new Color(173, 32, 24);
+
+    // default colors
+    private static final Color DEFAULT_PEN_COLOR   = BLACK;
+    private static final Color DEFAULT_CLEAR_COLOR = WHITE;
+
+    // boundary of drawing canvas, 5% border
+    private static final double BORDER = 0.05;
+    private static final double DEFAULT_XMIN = 0.0;
+    private static final double DEFAULT_XMAX = 1.0;
+    private static final double DEFAULT_YMIN = 0.0;
+    private static final double DEFAULT_YMAX = 1.0;
+
+    // default canvas size is SIZE-by-SIZE
+    private static final int DEFAULT_SIZE = 512;
+
+    // default pen radius
+    private static final double DEFAULT_PEN_RADIUS = 0.002;
+
+    // default font
+    private static final Font DEFAULT_FONT = new Font("SansSerif", Font.PLAIN, 16);
+
+    // current pen color
+    private Color penColor;
+
+    // canvas size
+    private int width  = DEFAULT_SIZE;
+    private int height = DEFAULT_SIZE;
+
+    // current pen radius
+    private double penRadius;
+
+    // show we draw immediately or wait until next show?
+    private boolean defer = false;
+
+    private double xmin, ymin, xmax, ymax;
+
+    // name of window
+    private String name = "Draw";
+
+    // for synchronization
+    private Object mouseLock = new Object();
+    private Object keyLock = new Object();
+
+    // current font
+    private Font font;
+
+    // double buffered graphics
+    private BufferedImage offscreenImage, onscreenImage;
+    private Graphics2D offscreen, onscreen;
+
+    // the frame for drawing to the screen
+    private JFrame frame = new JFrame();
+
+    // mouse state
+    private boolean mousePressed = false;
+    private double mouseX = 0;
+    private double mouseY = 0;
+
+    // keyboard state
+    private LinkedList<Character> keysTyped = new LinkedList<Character>();
+    private TreeSet<Integer> keysDown = new TreeSet<Integer>();
+
+    // event-based listeners
+    private ArrayList<DrawListener> listeners = new ArrayList<DrawListener>();
+
+
+    /**
+     * Create an empty drawing object with the given name.
+     *
+     * @param name the title of the drawing window.
+     */
+    public Draw(String name) {
+        this.name = name;
+        init();
+    }
+
+    /**
+     * Create an empty drawing object.
+     */
+    public Draw() {
+        init();
+    }
+
+    private void init() {
+        if (frame != null) frame.setVisible(false);
+        frame = new JFrame();
+        offscreenImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        onscreenImage  = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        offscreen = offscreenImage.createGraphics();
+        onscreen  = onscreenImage.createGraphics();
+        setXscale();
+        setYscale();
+        offscreen.setColor(DEFAULT_CLEAR_COLOR);
+        offscreen.fillRect(0, 0, width, height);
+        setPenColor();
+        setPenRadius();
+        setFont();
+        clear();
+
+        // add antialiasing
+        RenderingHints hints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
+                                                  RenderingHints.VALUE_ANTIALIAS_ON);
+        hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+        offscreen.addRenderingHints(hints);
+
+        // frame stuff
+        ImageIcon icon = new ImageIcon(onscreenImage);
+        JLabel draw = new JLabel(icon);
+
+        draw.addMouseListener(this);
+        draw.addMouseMotionListener(this);
+
+        frame.setContentPane(draw);
+        frame.addKeyListener(this);    // JLabel cannot get keyboard focus
+        frame.setResizable(false);
+        // frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            // closes all windows
+        frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);      // closes only current window
+        frame.setTitle(name);
+        frame.setJMenuBar(createMenuBar());
+        frame.pack();
+        frame.requestFocusInWindow();
+        frame.setVisible(true);
+    }
+
+
+    /**
+     * Set the upper-left hand corner of the drawing window to be (x, y), where (0, 0) is upper left.
+     *
+     * @param x the number of pixels from the left
+     * @param y the number of pixels from the top
+     * @throws a RunTimeException if the width or height is 0 or negative
+     */
+    public void setLocationOnScreen(int x, int y) {
+        frame.setLocation(x, y);
+    }
+
+
+
+    /**
+     * Set the window size to w-by-h pixels.
+     *
+     * @param w the width as a number of pixels
+     * @param h the height as a number of pixels
+     * @throws a RunTimeException if the width or height is 0 or negative
+     */
+    public void setCanvasSize(int w, int h) {
+        if (w < 1 || h < 1) throw new RuntimeException("width and height must be positive");
+        width = w;
+        height = h;
+        init();
+    }
+
+
+    // create the menu bar (changed to private)
+    private JMenuBar createMenuBar() {
+        JMenuBar menuBar = new JMenuBar();
+        JMenu menu = new JMenu("File");
+        menuBar.add(menu);
+        JMenuItem menuItem1 = new JMenuItem(" Save...   ");
+        menuItem1.addActionListener(this);
+        menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+        menu.add(menuItem1);
+        return menuBar;
+    }
+
+
+   /*************************************************************************
+    *  User and screen coordinate systems
+    *************************************************************************/
+
+    /**
+     * Set the x-scale to be the default (between 0.0 and 1.0).
+     */
+    public void setXscale() { setXscale(DEFAULT_XMIN, DEFAULT_XMAX); }
+
+    /**
+     * Set the y-scale to be the default (between 0.0 and 1.0).
+     */
+    public void setYscale() { setYscale(DEFAULT_YMIN, DEFAULT_YMAX); }
+
+    /**
+     * Set the x-scale (a 10% border is added to the values)
+     * @param min the minimum value of the x-scale
+     * @param max the maximum value of the x-scale
+     */
+    public void setXscale(double min, double max) {
+        double size = max - min;
+        xmin = min - BORDER * size;
+        xmax = max + BORDER * size;
+    }
+
+    /**
+     * Set the y-scale (a 10% border is added to the values).
+     * @param min the minimum value of the y-scale
+     * @param max the maximum value of the y-scale
+     */
+    public void setYscale(double min, double max) {
+        double size = max - min;
+        ymin = min - BORDER * size;
+        ymax = max + BORDER * size;
+    }
+
+    // helper functions that scale from user coordinates to screen coordinates and back
+    private double  scaleX(double x) { return width  * (x - xmin) / (xmax - xmin); }
+    private double  scaleY(double y) { return height * (ymax - y) / (ymax - ymin); }
+    private double factorX(double w) { return w * width  / Math.abs(xmax - xmin);  }
+    private double factorY(double h) { return h * height / Math.abs(ymax - ymin);  }
+    private double   userX(double x) { return xmin + x * (xmax - xmin) / width;    }
+    private double   userY(double y) { return ymax - y * (ymax - ymin) / height;   }
+
+
+    /**
+     * Clear the screen to the default color (white).
+     */
+    public void clear() { clear(DEFAULT_CLEAR_COLOR); }
+    /**
+     * Clear the screen to the given color.
+     * @param color the Color to make the background
+     */
+    public void clear(Color color) {
+        offscreen.setColor(color);
+        offscreen.fillRect(0, 0, width, height);
+        offscreen.setColor(penColor);
+        draw();
+    }
+
+    /**
+     * Get the current pen radius.
+     */
+    public double getPenRadius() { return penRadius; }
+
+    /**
+     * Set the pen size to the default (.002).
+     */
+    public void setPenRadius() { setPenRadius(DEFAULT_PEN_RADIUS); }
+
+    /**
+     * Set the radius of the pen to the given size.
+     * @param r the radius of the pen
+     * @throws RuntimeException if r is negative
+     */
+    public void setPenRadius(double r) {
+        if (r < 0) throw new RuntimeException("pen radius must be positive");
+        penRadius = r * DEFAULT_SIZE;
+        BasicStroke stroke = new BasicStroke((float) penRadius, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
+        // BasicStroke stroke = new BasicStroke((float) penRadius);
+        offscreen.setStroke(stroke);
+    }
+
+    /**
+     * Get the current pen color.
+     */
+    public Color getPenColor() { return penColor; }
+
+    /**
+     * Set the pen color to the default color (black).
+     */
+    public void setPenColor() { setPenColor(DEFAULT_PEN_COLOR); }
+
+    /**
+     * Set the pen color to the given color.
+     * @param color the Color to make the pen
+     */
+    public void setPenColor(Color color) {
+        penColor = color;
+        offscreen.setColor(penColor);
+    }
+
+    /**
+     * Set the pen color to the given RGB color.
+     * @param red the amount of red (between 0 and 255)
+     * @param green the amount of green (between 0 and 255)
+     * @param blue the amount of blue (between 0 and 255)
+     * @throws IllegalArgumentException if the amount of red, green, or blue are outside prescribed range
+     */
+    public void setPenColor(int red, int green, int blue) {
+        if (red   < 0 || red   >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (green < 0 || green >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (blue  < 0 || blue  >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        setPenColor(new Color(red, green, blue));
+    }
+
+
+    public void xorOn()   { offscreen.setXORMode(DEFAULT_CLEAR_COLOR); }
+    public void xorOff()  { offscreen.setPaintMode();         }
+
+    /**
+     * Get the current font.
+     */
+    public Font getFont() { return font; }
+
+    /**
+     * Set the font to the default font (sans serif, 16 point).
+     */
+    public void setFont() { setFont(DEFAULT_FONT); }
+
+    /**
+     * Set the font to the given value.
+     * @param f the font to make text
+     */
+    public void setFont(Font f) { font = f; }
+
+
+   /*************************************************************************
+    *  Drawing geometric shapes.
+    *************************************************************************/
+
+    /**
+     * Draw a line from (x0, y0) to (x1, y1).
+     * @param x0 the x-coordinate of the starting point
+     * @param y0 the y-coordinate of the starting point
+     * @param x1 the x-coordinate of the destination point
+     * @param y1 the y-coordinate of the destination point
+     */
+    public void line(double x0, double y0, double x1, double y1) {
+        offscreen.draw(new Line2D.Double(scaleX(x0), scaleY(y0), scaleX(x1), scaleY(y1)));
+        draw();
+    }
+
+    /**
+     * Draw one pixel at (x, y).
+     * @param x the x-coordinate of the pixel
+     * @param y the y-coordinate of the pixel
+     */
+    private void pixel(double x, double y) {
+        offscreen.fillRect((int) Math.round(scaleX(x)), (int) Math.round(scaleY(y)), 1, 1);
+    }
+
+    /**
+     * Draw a point at (x, y).
+     * @param x the x-coordinate of the point
+     * @param y the y-coordinate of the point
+     */
+    public void point(double x, double y) {
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double r = penRadius;
+        // double ws = factorX(2*r);
+        // double hs = factorY(2*r);
+        // if (ws <= 1 && hs <= 1) pixel(x, y);
+        if (r <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - r/2, ys - r/2, r, r));
+        draw();
+    }
+
+    /**
+     * Draw a circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws RuntimeException if the radius of the circle is negative
+     */
+    public void circle(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("circle radius can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw filled circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws RuntimeException if the radius of the circle is negative
+     */
+    public void filledCircle(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("circle radius can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws RuntimeException if either of the axes are negative
+     */
+    public void ellipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (semiMajorAxis < 0) throw new RuntimeException("ellipse semimajor axis can't be negative");
+        if (semiMinorAxis < 0) throw new RuntimeException("ellipse semiminor axis can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws RuntimeException if either of the axes are negative
+     */
+    public void filledEllipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (semiMajorAxis < 0) throw new RuntimeException("ellipse semimajor axis can't be negative");
+        if (semiMinorAxis < 0) throw new RuntimeException("ellipse semiminor axis can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw an arc of radius r, centered on (x, y), from angle1 to angle2 (in degrees).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @param angle1 the starting angle. 0 would mean an arc beginning at 3 o'clock.
+     * @param angle2 the angle at the end of the arc. For example, if
+     *        you want a 90 degree arc, then angle2 should be angle1 + 90.
+     * @throws RuntimeException if the radius of the circle is negative
+     */
+    public void arc(double x, double y, double r, double angle1, double angle2) {
+        if (r < 0) throw new RuntimeException("arc radius can't be negative");
+        while (angle2 < angle1) angle2 += 360;
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Arc2D.Double(xs - ws/2, ys - hs/2, ws, hs, angle1, angle2 - angle1, Arc2D.OPEN));
+        draw();
+    }
+
+    /**
+     * Draw a square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws RuntimeException if r is negative
+     */
+    public void square(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("square side length can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws RuntimeException if r is negative
+     */
+    public void filledSquare(double x, double y, double r) {
+        if (r < 0) throw new RuntimeException("square side length can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw a rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws RuntimeException if halfWidth or halfHeight is negative
+     */
+    public void rectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (halfWidth  < 0) throw new RuntimeException("half width can't be negative");
+        if (halfHeight < 0) throw new RuntimeException("half height can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws RuntimeException if halfWidth or halfHeight is negative
+     */
+    public void filledRectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (halfWidth  < 0) throw new RuntimeException("half width can't be negative");
+        if (halfHeight < 0) throw new RuntimeException("half height can't be negative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public void polygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.draw(path);
+        draw();
+    }
+
+    /**
+     * Draw a filled polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public void filledPolygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.fill(path);
+        draw();
+    }
+
+
+
+   /*************************************************************************
+    *  Drawing images.
+    *************************************************************************/
+
+    // get an image from the given filename
+    private Image getImage(String filename) {
+
+        // to read from file
+        ImageIcon icon = new ImageIcon(filename);
+
+        // try to read from URL
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            try {
+                URL url = new URL(filename);
+                icon = new ImageIcon(url);
+            } catch (Exception e) { /* not a url */ }
+        }
+
+        // in case file is inside a .jar
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            URL url = Draw.class.getResource(filename);
+            if (url == null) throw new RuntimeException("image " + filename + " not found");
+            icon = new ImageIcon(url);
+        }
+
+        return icon.getImage();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y).
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y),
+     * rotated given number of degrees
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s, double degrees) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rescaled to w-by-h.
+     * @param x the center x coordinate of the image
+     * @param y the center y coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s, double w, double h) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else {
+            offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                       (int) Math.round(ys - hs/2.0),
+                                       (int) Math.round(ws),
+                                       (int) Math.round(hs), null);
+        }
+        draw();
+    }
+
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rotated
+     * given number of degrees, rescaled to w-by-h.
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws RuntimeException if the image is corrupt
+     */
+    public void picture(double x, double y, String s, double w, double h, double degrees) {
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                   (int) Math.round(ys - hs/2.0),
+                                   (int) Math.round(ws),
+                                   (int) Math.round(hs), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+
+   /*************************************************************************
+    *  Drawing text.
+    *************************************************************************/
+
+    /**
+     * Write the given text string in the current font, centered on (x, y).
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     */
+    public void text(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs - ws/2.0), (float) (ys + hs));
+        draw();
+    }
+
+    /**
+     * Write the given text string in the current font, centered on (x, y) and
+     * rotated by the specified number of degrees
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     * @param degrees is the number of degrees to rotate counterclockwise
+     */
+    public void text(double x, double y, String s, double degrees) {
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        text(x, y, s);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+    }
+
+    /**
+     * Write the given text string in the current font, left-aligned at (x, y).
+     * @param x the x-coordinate of the text
+     * @param y the y-coordinate of the text
+     * @param s the text
+     */
+    public void textLeft(double x, double y, String s) {
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        // int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs), (float) (ys + hs));
+        show();
+    }
+
+
+    /**
+     * Display on screen, pause for t milliseconds, and turn on
+     * <em>animation mode</em>: subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will not be displayed on screen until the next call to <tt>show()</tt>.
+     * This is useful for producing animations (clear the screen, draw a bunch of shapes,
+     * display on screen for a fixed amount of time, and repeat). It also speeds up
+     * drawing a huge number of shapes (call <tt>show(0)</tt> to defer drawing
+     * on screen, draw the shapes, and call <tt>show(0)</tt> to display them all
+     * on screen at once).
+     * @param t number of milliseconds
+     */
+    public void show(int t) {
+        defer = false;
+        draw();
+        try { Thread.sleep(t); }
+        catch (InterruptedException e) { System.out.println("Error sleeping"); }
+        defer = true;
+    }
+
+
+    /**
+     * Display on-screen and turn off animation mode:
+     * subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will be displayed on screen when called. This is the default.
+     */
+    public void show() {
+        defer = false;
+        draw();
+    }
+
+    // draw onscreen if defer is false
+    private void draw() {
+        if (defer) return;
+        onscreen.drawImage(offscreenImage, 0, 0, null);
+        frame.repaint();
+    }
+
+
+   /*************************************************************************
+    *  Save drawing to a file.
+    *************************************************************************/
+
+    /**
+     * Save to file - suffix must be png, jpg, or gif.
+     * @param filename the name of the file with one of the required suffixes
+     */
+    public void save(String filename) {
+        File file = new File(filename);
+        String suffix = filename.substring(filename.lastIndexOf('.') + 1);
+
+        // png files
+        if (suffix.toLowerCase().equals("png")) {
+            try { ImageIO.write(offscreenImage, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        // need to change from ARGB to RGB for jpeg
+        // reference: http://archives.java.sun.com/cgi-bin/wa?A2=ind0404&L=java2d-interest&D=0&P=2727
+        else if (suffix.toLowerCase().equals("jpg")) {
+            WritableRaster raster = offscreenImage.getRaster();
+            WritableRaster newRaster;
+            newRaster = raster.createWritableChild(0, 0, width, height, 0, 0, new int[] {0, 1, 2});
+            DirectColorModel cm = (DirectColorModel) offscreenImage.getColorModel();
+            DirectColorModel newCM = new DirectColorModel(cm.getPixelSize(),
+                                                          cm.getRedMask(),
+                                                          cm.getGreenMask(),
+                                                          cm.getBlueMask());
+            BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false,  null);
+            try { ImageIO.write(rgbBuffer, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        else {
+            System.out.println("Invalid image file type: " + suffix);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void actionPerformed(ActionEvent e) {
+        FileDialog chooser = new FileDialog(frame, "Use a .png or .jpg extension", FileDialog.SAVE);
+        chooser.setVisible(true);
+        String filename = chooser.getFile();
+        if (filename != null) {
+            save(chooser.getDirectory() + File.separator + chooser.getFile());
+        }
+    }
+
+
+
+   /*************************************************************************
+    *  Event-based interactions.
+    *************************************************************************/
+
+    public void addListener(DrawListener listener) {
+        // ensure there is a window for listenting to events
+        show();
+        listeners.add(listener);
+        frame.addKeyListener(this);
+        frame.addMouseListener(this);
+        frame.addMouseMotionListener(this);
+        frame.setFocusable(true); 
+    }
+
+
+
+
+   /*************************************************************************
+    *  Mouse interactions.
+    *************************************************************************/
+
+    /**
+     * Is the mouse being pressed?
+     * @return true or false
+     */
+    public boolean mousePressed() {
+        synchronized (mouseLock) {
+            return mousePressed;
+        }
+    }
+
+    /**
+     * What is the x-coordinate of the mouse?
+     * @return the value of the x-coordinate of the mouse
+     */
+    public double mouseX() {
+        synchronized (mouseLock) {
+            return mouseX;
+        }
+    }
+
+    /**
+     * What is the y-coordinate of the mouse?
+     * @return the value of the y-coordinate of the mouse
+     */
+    public double mouseY() {
+        synchronized (mouseLock) {
+            return mouseY;
+        }
+    }
+
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseClicked(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseEntered(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseExited(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mousePressed(MouseEvent e) {
+        synchronized (mouseLock) {
+            mouseX = userX(e.getX());
+            mouseY = userY(e.getY());
+            mousePressed = true;
+        }
+        if (e.getButton() == MouseEvent.BUTTON1) {
+           for (DrawListener listener : listeners)
+               listener.mousePressed(userX(e.getX()), userY(e.getY()));
+        }
+
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseReleased(MouseEvent e) {
+        synchronized (mouseLock) {
+            mousePressed = false;
+        }
+        if (e.getButton() == MouseEvent.BUTTON1) {
+           for (DrawListener listener : listeners)
+               listener.mouseReleased(userX(e.getX()), userY(e.getY()));
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseDragged(MouseEvent e)  {
+        synchronized (mouseLock) {
+            mouseX = userX(e.getX());
+            mouseY = userY(e.getY());
+        }
+        // doesn't seem to work if a button is specified
+        for (DrawListener listener : listeners)
+            listener.mouseDragged(userX(e.getX()), userY(e.getY()));
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseMoved(MouseEvent e) {
+        synchronized (mouseLock) {
+            mouseX = userX(e.getX());
+            mouseY = userY(e.getY());
+        }
+    }
+
+
+   /*************************************************************************
+    *  Keyboard interactions.
+    *************************************************************************/
+
+    /**
+     * Has the user typed a key?
+     * @return true if the user has typed a key, false otherwise
+     */
+    public boolean hasNextKeyTyped() {
+        synchronized (keyLock) {
+            return !keysTyped.isEmpty();
+        }
+    }
+
+    /**
+     * What is the next key that was typed by the user?
+     * @return the next key typed
+     */
+    public char nextKeyTyped() {
+        synchronized (keyLock) {
+            return keysTyped.removeLast();
+        }
+    }
+
+   /**
+     * Is the keycode currently being pressed? This method takes as an argument
+     * the keycode (corresponding to a physical key). It can handle action keys
+     * (such as F1 and arrow keys) and modifier keys (such as shift and control).
+     * See <a href = "http://download.oracle.com/javase/6/docs/api/java/awt/event/KeyEvent.html">KeyEvent.java</a>
+     * for a description of key codes.
+     * @return true if keycode is currently being pressed, false otherwise
+     */
+    public boolean isKeyPressed(int keycode) {
+        synchronized (keyLock) {
+            return keysDown.contains(keycode);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyTyped(KeyEvent e) {
+        synchronized (keyLock) {
+            keysTyped.addFirst(e.getKeyChar());
+        }
+
+        // notify all listeners
+        for (DrawListener listener : listeners)
+            listener.keyTyped(e.getKeyChar());
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyPressed(KeyEvent e) {
+        synchronized (keyLock) {
+            keysDown.add(e.getKeyCode());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyReleased(KeyEvent e) {
+        synchronized (keyLock) {
+             keysDown.remove(e.getKeyCode());
+        }
+    }
+
+
+
+
+    /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+
+        // create one drawing window
+        Draw draw1 = new Draw("Test client 1");
+        draw1.square(.2, .8, .1);
+        draw1.filledSquare(.8, .8, .2);
+        draw1.circle(.8, .2, .2);
+        draw1.setPenColor(Draw.MAGENTA);
+        draw1.setPenRadius(.02);
+        draw1.arc(.8, .2, .1, 200, 45);
+
+
+        // create another one
+        Draw draw2 = new Draw("Test client 2");
+        draw2.setCanvasSize(900, 200);
+        // draw a blue diamond
+        draw2.setPenRadius();
+        draw2.setPenColor(Draw.BLUE);
+        double[] x = { .1, .2, .3, .2 };
+        double[] y = { .2, .3, .2, .1 };
+        draw2.filledPolygon(x, y);
+
+        // text
+        draw2.setPenColor(Draw.BLACK);
+        draw2.text(0.2, 0.5, "bdfdfdfdlack text");
+        draw2.setPenColor(Draw.WHITE);
+        draw2.text(0.8, 0.8, "white text");
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/DrawListener.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/DrawListener.java
new file mode 100644
index 000000000..492b57132
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/DrawListener.java
@@ -0,0 +1,6 @@
+public interface DrawListener {
+    public void mousePressed (double x, double y);
+    public void mouseDragged (double x, double y);
+    public void mouseReleased(double x, double y);
+    public void keyTyped(char c);
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/In.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/In.java
new file mode 100644
index 000000000..f48f40d83
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/In.java
@@ -0,0 +1,524 @@
+/*************************************************************************
+ *  Compilation:  javac In.java
+ *  Execution:    java In   (basic test --- see source for required files)
+ *
+ *  Reads in data of various types from standard input, files, and URLs.
+ *
+ *************************************************************************/
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.HttpURLConnection;
+import java.net.URLConnection;
+import java.util.Scanner;
+import java.util.regex.Pattern;
+
+/**
+ *  <i>Input</i>. This class provides methods for reading strings
+ *  and numbers from standard input, file input, URLs, and sockets. 
+ *  <p>
+ *  The Locale used is: language = English, country = US. This is consistent
+ *  with the formatting conventions with Java floating-point literals,
+ *  command-line arguments (via {@link Double#parseDouble(String)})
+ *  and standard output. 
+ *  <p>
+ *  For additional documentation, see 
+ *  <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> 
+ *  by Robert Sedgewick and Kevin Wayne.
+ *  <p>
+ *  Like {@link Scanner}, reading a token also consumes preceding Java
+ *  whitespace, reading a full line consumes
+ *  the following end-of-line delimeter, while reading a character consumes
+ *  nothing extra. 
+ *  <p>
+ *  Whitespace is defined in {@link Character#isWhitespace(char)}. Newlines
+ *  consist of \n, \r, \r\n, and Unicode hex code points 0x2028, 0x2029, 0x0085;
+ *  see <tt><a href="http://www.docjar.com/html/api/java/util/Scanner.java.html">
+ *  Scanner.java</a></tt> (NB: Java 6u23 and earlier uses only \r, \r, \r\n).
+ *
+ *  @author David Pritchard
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class In {
+    
+    private Scanner scanner;
+
+    /*** begin: section (1 of 2) of code duplicated from In to StdIn */
+    
+    // assume Unicode UTF-8 encoding
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with System.out.
+    private static final java.util.Locale usLocale = 
+        new java.util.Locale("en", "US");
+
+    // the default token separator; we maintain the invariant that this value 
+    // is held by the scanner's delimiter between calls
+    private static final Pattern WHITESPACE_PATTERN
+        = Pattern.compile("\\p{javaWhitespace}+");
+
+    // makes whitespace characters significant 
+    private static final Pattern EMPTY_PATTERN
+        = Pattern.compile("");
+
+    // used to read the entire input. source:
+    // http://weblogs.java.net/blog/pat/archive/2004/10/stupid_scanner_1.html
+    private static final Pattern EVERYTHING_PATTERN
+        = Pattern.compile("\\A");
+
+    /*** end: section (1 of 2) of code duplicated from In to StdIn */
+
+   /**
+     * Create an input stream from standard input.
+     */
+    public In() {
+        scanner = new Scanner(new BufferedInputStream(System.in), charsetName);
+        scanner.useLocale(usLocale);
+    }
+
+   /**
+     * Create an input stream from a socket.
+     */
+    public In(java.net.Socket socket) {
+        try {
+            InputStream is = socket.getInputStream();
+            scanner = new Scanner(new BufferedInputStream(is), charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + socket);
+        }
+    }
+
+   /**
+     * Create an input stream from a URL.
+     */
+    public In(URL url) {
+        try {
+            URLConnection site = url.openConnection();
+            InputStream is     = site.getInputStream();
+            scanner            = new Scanner(new BufferedInputStream(is), charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + url);
+        }
+    }
+
+   /**
+     * Create an input stream from a file.
+     */
+    public In(File file) {
+        try {
+            scanner = new Scanner(file, charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + file);
+        }
+    }
+
+
+   /**
+     * Create an input stream from a filename or web page name.
+     */
+    public In(String s) {
+        try {
+            // first try to read file from local file system
+            File file = new File(s);
+            if (file.exists()) {
+                scanner = new Scanner(file, charsetName);
+                scanner.useLocale(usLocale);
+                return;
+            }
+
+            // next try for files included in jar
+            URL url = getClass().getResource(s);
+
+            // or URL from web
+            if (url == null) { url = new URL(s); }
+
+            URLConnection site = url.openConnection();
+
+            // in order to set User-Agent, replace above line with these two
+            // HttpURLConnection site = (HttpURLConnection) url.openConnection();
+            // site.addRequestProperty("User-Agent", "Mozilla/4.76");
+
+            InputStream is     = site.getInputStream();
+            scanner            = new Scanner(new BufferedInputStream(is), charsetName);
+            scanner.useLocale(usLocale);
+        }
+        catch (IOException ioe) {
+            System.err.println("Could not open " + s);
+        }
+    }
+
+    /**
+     * Create an input stream from a given Scanner source; use with 
+     * <tt>new Scanner(String)</tt> to read from a string.
+     * <p>
+     * Note that this does not create a defensive copy, so the
+     * scanner will be mutated as you read on. 
+     */
+    public In(Scanner scanner) {
+        this.scanner = scanner;
+    }
+
+    /**
+     * Does the input stream exist?
+     */
+    public boolean exists()  {
+        return scanner != null;
+    }
+    
+    /*** begin: section (2 of 2) of code duplicated from In to StdIn,
+      *  with all methods changed from "public" to "public static" ***/
+
+   /**
+     * Is the input empty (except possibly for whitespace)? Use this
+     * to know whether the next call to {@link #readString()}, 
+     * {@link #readDouble()}, etc will succeed.
+     */
+    public boolean isEmpty() {
+        return !scanner.hasNext();
+    }
+
+   /**
+     * Does the input have a next line? Use this to know whether the
+     * next call to {@link #readLine()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextChar()}.
+     */
+    public boolean hasNextLine() {
+        return scanner.hasNextLine();
+    }
+
+    /**
+     * Is the input empty (including whitespace)? Use this to know 
+     * whether the next call to {@link #readChar()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextLine()}.
+     */
+    public boolean hasNextChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        boolean result = scanner.hasNext();
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return result;
+    }
+
+
+   /**
+     * Read and return the next line.
+     */
+    public String readLine() {
+        String line;
+        try                 { line = scanner.nextLine(); }
+        catch (Exception e) { line = null;               }
+        return line;
+    }
+
+    /**
+     * Read and return the next character.
+     */
+    public char readChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        String ch = scanner.next();
+        assert (ch.length() == 1) : "Internal (Std)In.readChar() error!"
+            + " Please contact the authors.";
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return ch.charAt(0);
+    }  
+
+
+   /**
+     * Read and return the remainder of the input as a string.
+     */
+    public String readAll() {
+        if (!scanner.hasNextLine())
+            return "";
+
+        String result = scanner.useDelimiter(EVERYTHING_PATTERN).next();
+        // not that important to reset delimeter, since now scanner is empty
+        scanner.useDelimiter(WHITESPACE_PATTERN); // but let's do it anyway
+        return result;
+    }
+
+
+   /**
+     * Read and return the next string.
+     */
+    public String readString() {
+        return scanner.next();
+    }
+
+   /**
+     * Read and return the next int.
+     */
+    public int readInt() {
+        return scanner.nextInt();
+    }
+
+   /**
+     * Read and return the next double.
+     */
+    public double readDouble() {
+        return scanner.nextDouble();
+    }
+
+   /**
+     * Read and return the next float.
+     */
+    public float readFloat() {
+        return scanner.nextFloat();
+    }
+
+   /**
+     * Read and return the next long.
+     */
+    public long readLong() {
+        return scanner.nextLong();
+    }
+
+   /**
+     * Read and return the next short.
+     */
+    public short readShort() {
+        return scanner.nextShort();
+    }
+
+   /**
+     * Read and return the next byte.
+     */
+    public byte readByte() {
+        return scanner.nextByte();
+    }
+
+    /**
+     * Read and return the next boolean, allowing case-insensitive
+     * "true" or "1" for true, and "false" or "0" for false.
+     */
+    public boolean readBoolean() {
+        String s = readString();
+        if (s.equalsIgnoreCase("true"))  return true;
+        if (s.equalsIgnoreCase("false")) return false;
+        if (s.equals("1"))               return true;
+        if (s.equals("0"))               return false;
+        throw new java.util.InputMismatchException();
+    }
+
+    /**
+     * Read all strings until the end of input is reached, and return them.
+     */
+    public String[] readAllStrings() {
+        // we could use readAll.trim().split(), but that's not consistent
+        // since trim() uses characters 0x00..0x20 as whitespace
+        String[] tokens = WHITESPACE_PATTERN.split(readAll());
+        if (tokens.length == 0 || tokens[0].length() > 0)
+            return tokens;
+        String[] decapitokens = new String[tokens.length-1];
+        for (int i = 0; i < tokens.length-1; i++)
+            decapitokens[i] = tokens[i+1];
+        return decapitokens;
+    }
+
+    /**
+     * Read all ints until the end of input is reached, and return them.
+     */
+    public int[] readAllInts() {
+        String[] fields = readAllStrings();
+        int[] vals = new int[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Integer.parseInt(fields[i]);
+        return vals;
+    }
+
+    /**
+     * Read all doubles until the end of input is reached, and return them.
+     */
+    public double[] readAllDoubles() {
+        String[] fields = readAllStrings();
+        double[] vals = new double[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Double.parseDouble(fields[i]);
+        return vals;
+    }
+    
+    /*** end: section (2 of 2) of code duplicated from In to StdIn */
+    
+   /**
+     * Close the input stream.
+     */
+    public void close() {
+        scanner.close();  
+    }
+
+    /**
+     * Reads all ints from a file 
+     * @deprecated Clearer to use 
+     * <tt>new In(filename)</tt>.{@link #readAllInts()}
+     */
+    public static int[] readInts(String filename) {
+        return new In(filename).readAllInts();
+    }
+
+   /**
+     * Reads all doubles from a file
+     * @deprecated Clearer to use 
+     * <tt>new In(filename)</tt>.{@link #readAllDoubles()}
+     */
+    public static double[] readDoubles(String filename) {
+        return new In(filename).readAllDoubles();
+    }
+
+   /**
+     * Reads all strings from a file
+     * @deprecated Clearer to use 
+     * <tt>new In(filename)</tt>.{@link #readAllStrings()}
+     */
+    public static String[] readStrings(String filename) {
+        return new In(filename).readAllStrings();
+    }
+
+    /**
+     * Reads all ints from stdin 
+     * @deprecated Clearer to use {@link StdIn#readAllInts()}
+     */
+    public static int[] readInts() {
+        return new In().readAllInts();
+    }
+
+   /**
+     * Reads all doubles from stdin
+     * @deprecated Clearer to use {@link StdIn#readAllDoubles()}
+     */
+    public static double[] readDoubles() {
+        return new In().readAllDoubles();
+    }
+
+   /**
+     * Reads all strings from stdin
+     * @deprecated Clearer to use {@link StdIn#readAllStrings()}
+     */
+    public static String[] readStrings() {
+        return new In().readAllStrings();
+    }
+    
+   /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+        In in;
+        String urlName = "http://introcs.cs.princeton.edu/stdlib/InTest.txt";
+
+        // read from a URL
+        System.out.println("readAll() from URL " + urlName);
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In(urlName);
+            System.out.println(in.readAll());
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+        // read one line at a time from URL
+        System.out.println("readLine() from URL " + urlName);
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In(urlName);
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+        // read one string at a time from URL
+        System.out.println("readString() from URL " + urlName);
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In(urlName);
+            while (!in.isEmpty()) {
+                String s = in.readString();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+
+        // read one line at a time from file in current directory
+        System.out.println("readLine() from current directory");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("./InTest.txt");
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+
+        // read one line at a time from file using relative path
+        System.out.println("readLine() from relative path");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("../stdlib/InTest.txt");
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+        // read one char at a time
+        System.out.println("readChar() from file");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("InTest.txt");
+            while (!in.isEmpty()) {
+                char c = in.readChar();
+                System.out.print(c);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+        System.out.println();
+
+        // read one line at a time from absolute OS X / Linux path
+        System.out.println("readLine() from absolute OS X / Linux path");
+        System.out.println("---------------------------------------------------------------------------");
+        in = new In("/n/fs/introcs/www/java/stdlib/InTest.txt");
+        try {
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+
+        // read one line at a time from absolute Windows path
+        System.out.println("readLine() from absolute Windows path");
+        System.out.println("---------------------------------------------------------------------------");
+        try {
+            in = new In("G:\\www\\introcs\\stdlib\\InTest.txt");
+            while (!in.isEmpty()) {
+                String s = in.readLine();
+                System.out.println(s);
+            }
+            System.out.println();
+        }
+        catch (Exception e) { System.out.println(e); }
+        System.out.println();
+
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/InTest.txt b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/InTest.txt
new file mode 100644
index 000000000..753b42d51
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/InTest.txt
@@ -0,0 +1,2 @@
+This is a test file.
+Here    is line 2.
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Out.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Out.java
new file mode 100644
index 000000000..7609df984
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Out.java
@@ -0,0 +1,259 @@
+/*************************************************************************
+ *  Compilation:  javac Out.java
+ *  Execution:    java Out
+ *
+ *  Writes data of various types to: stdout, file, or socket.
+ *
+ *************************************************************************/
+
+
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.net.Socket;
+import java.util.Locale;
+
+/**
+ *  This class provides methods for writing strings and numbers to
+ *  various output streams, including standard output, file, and sockets.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class Out {
+
+    // force Unicode UTF-8 encoding; otherwise it's system dependent
+    private static String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with In
+    private static final Locale US_LOCALE = new Locale("en", "US");
+
+    private PrintWriter out;
+
+   /**
+     * Create an Out object using an OutputStream.
+     */
+    public Out(OutputStream os) {
+        try {
+            OutputStreamWriter osw = new OutputStreamWriter(os, charsetName);
+            out = new PrintWriter(osw, true);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Create an Out object using standard output.
+     */
+    public Out() { this(System.out); }
+
+   /**
+     * Create an Out object using a Socket.
+     */
+    public Out(Socket socket) {
+        try {
+            OutputStream os = socket.getOutputStream();
+            OutputStreamWriter osw = new OutputStreamWriter(os, charsetName);
+            out = new PrintWriter(osw, true);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Create an Out object using a file specified by the given name.
+     */
+    public Out(String s) {
+        try {
+            OutputStream os = new FileOutputStream(s);
+            OutputStreamWriter osw = new OutputStreamWriter(os, charsetName);
+            out = new PrintWriter(osw, true);
+        }
+        catch (IOException e) { e.printStackTrace(); }
+    }
+
+   /**
+     * Close the output stream.
+     */
+    public void close() { out.close(); }
+
+
+
+   /**
+     * Terminate the line.
+     */
+    public void println() {
+        out.println();
+    }
+
+   /**
+     * Print an object and then terminate the line.
+     */
+    public void println(Object x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a boolean and then terminate the line.
+     */
+    public void println(boolean x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a char and then terminate the line.
+     */
+    public void println(char x) {
+        out.println(x);
+    }
+
+   /**
+     * Print an double and then terminate the line.
+     */
+    public void println(double x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a float and then terminate the line.
+     */
+    public void println(float x) {
+        out.println(x);
+    }
+
+   /**
+     * Print an int and then terminate the line.
+     */
+    public void println(int x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a long and then terminate the line.
+     */
+    public void println(long x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a byte and then terminate the line.
+     */
+    public void println(byte x) {
+        out.println(x);
+    }
+
+
+
+   /**
+     * Flush the output stream.
+     */
+    public void print() {
+        out.flush();
+    }
+
+   /**
+     * Print an object and then flush the output stream.
+     */
+    public void print(Object x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an boolean and then flush the output stream.
+     */
+    public void print(boolean x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an char and then flush the output stream.
+     */
+    public void print(char x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an double and then flush the output stream.
+     */
+    public void print(double x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a float and then flush the output stream.
+     */
+    public void print(float x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an int and then flush the output stream.
+     */
+    public void print(int x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a long and then flush the output stream.
+     */
+    public void print(long x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a byte and then flush the output stream.
+     */
+    public void print(byte x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string using the specified format string and arguments,
+     * and then flush the output stream.
+     */
+    public void printf(String format, Object... args) {
+        out.printf(US_LOCALE, format, args);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string using the specified locale, format string and arguments,
+     * and then flush the output stream.
+     */
+    public void printf(Locale locale, String format, Object... args) {
+        out.printf(locale, format, args);
+        out.flush();
+    }
+
+
+   /**
+     * A test client.
+     */
+    public static void main(String[] args) {
+        Out out;
+
+        // write to stdout
+        out = new Out();
+        out.println("Test 1");
+        out.close();
+
+        // write to a file
+        out = new Out("test.txt");
+        out.println("Test 2");
+        out.close();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Picture.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Picture.java
new file mode 100644
index 000000000..fe9f1d0e3
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Picture.java
@@ -0,0 +1,288 @@
+/*************************************************************************
+ *  Compilation:  javac Picture.java
+ *  Execution:    java Picture imagename
+ *
+ *  Data type for manipulating individual pixels of an image. The original
+ *  image can be read from a file in jpg, gif, or png format, or the
+ *  user can create a blank image of a given size. Includes methods for
+ *  displaying the image in a window on the screen or saving to a file.
+ *
+ *  % java Picture mandrill.jpg
+ *
+ *  Remarks
+ *  -------
+ *   - pixel (x, y) is column x and row y, where (0, 0) is upper left
+ *
+ *   - see also GrayPicture.java for a grayscale version
+ *
+ *************************************************************************/
+
+import java.awt.Color;
+import java.awt.FileDialog;
+import java.awt.Toolkit;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.event.KeyEvent;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+import java.net.URL;
+import javax.imageio.ImageIO;
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.KeyStroke;
+
+
+/**
+ *  This class provides methods for manipulating individual pixels of
+ *  an image. The original image can be read from a file in JPEG, GIF,
+ *  or PNG format, or the user can create a blank image of a given size.
+ *  This class includes methods for displaying the image in a window on
+ *  the screen or saving to a file.
+ *  <p>
+ *  By default, pixel (x, y) is column x, row y, where (0, 0) is upper left.
+ *  The method setOriginLowerLeft() change the origin to the lower left.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/31datatype">Section 3.1</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class Picture implements ActionListener {
+    private BufferedImage image;               // the rasterized image
+    private JFrame frame;                      // on-screen view
+    private String filename;                   // name of file
+    private boolean isOriginUpperLeft = true;  // location of origin
+    private final int width, height;           // width and height
+
+   /**
+     * Create a blank w-by-h picture, where each pixel is black.
+     */
+    public Picture(int w, int h) {
+        width = w;
+        height = h;
+        image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
+        // set to TYPE_INT_ARGB to support transparency
+        filename = w + "-by-" + h;
+    }
+
+   /**
+     * Copy constructor.
+     */
+    public Picture(Picture pic) {
+        width = pic.width();
+        height = pic.height();
+        image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
+        filename = pic.filename;
+        for (int i = 0; i < width(); i++)
+            for (int j = 0; j < height(); j++)
+                image.setRGB(i, j, pic.get(i, j).getRGB());
+    }
+
+   /**
+     * Create a picture by reading in a .png, .gif, or .jpg from
+     * the given filename or URL name.
+     */
+    public Picture(String filename) {
+        this.filename = filename;
+        try {
+            // try to read from file in working directory
+            File file = new File(filename);
+            if (file.isFile()) {
+                image = ImageIO.read(file);
+            }
+
+            // now try to read from file in same directory as this .class file
+            else {
+                URL url = getClass().getResource(filename);
+                if (url == null) { url = new URL(filename); }
+                image = ImageIO.read(url);
+            }
+            width  = image.getWidth(null);
+            height = image.getHeight(null);
+        }
+        catch (IOException e) {
+            // e.printStackTrace();
+            throw new RuntimeException("Could not open file: " + filename);
+        }
+    }
+
+   /**
+     * Create a picture by reading in a .png, .gif, or .jpg from a File.
+     */
+    public Picture(File file) {
+        try { image = ImageIO.read(file); }
+        catch (IOException e) {
+            e.printStackTrace();
+            throw new RuntimeException("Could not open file: " + file);
+        }
+        if (image == null) {
+            throw new RuntimeException("Invalid image file: " + file);
+        }
+        width  = image.getWidth(null);
+        height = image.getHeight(null);
+        filename = file.getName();
+    }
+
+   /**
+     * Return a JLabel containing this Picture, for embedding in a JPanel,
+     * JFrame or other GUI widget.
+     */
+    public JLabel getJLabel() {
+        if (image == null) { return null; }         // no image available
+        ImageIcon icon = new ImageIcon(image);
+        return new JLabel(icon);
+    }
+
+   /**
+     * Set the origin to be the upper left pixel.
+     */
+    public void setOriginUpperLeft() {
+        isOriginUpperLeft = true;
+    }
+
+   /**
+     * Set the origin to be the lower left pixel.
+     */
+    public void setOriginLowerLeft() {
+        isOriginUpperLeft = false;
+    }
+
+   /**
+     * Display the picture in a window on the screen.
+     */
+    public void show() {
+
+        // create the GUI for viewing the image if needed
+        if (frame == null) {
+            frame = new JFrame();
+
+            JMenuBar menuBar = new JMenuBar();
+            JMenu menu = new JMenu("File");
+            menuBar.add(menu);
+            JMenuItem menuItem1 = new JMenuItem(" Save...   ");
+            menuItem1.addActionListener(this);
+            menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                                     Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+            menu.add(menuItem1);
+            frame.setJMenuBar(menuBar);
+
+
+
+            frame.setContentPane(getJLabel());
+            // f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+            frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+            frame.setTitle(filename);
+            frame.setResizable(false);
+            frame.pack();
+            frame.setVisible(true);
+        }
+
+        // draw
+        frame.repaint();
+    }
+
+   /**
+     * Return the height of the picture in pixels.
+     */
+    public int height() {
+        return height;
+    }
+
+   /**
+     * Return the width of the picture in pixels.
+     */
+    public int width() {
+        return width;
+    }
+
+   /**
+     * Return the color of pixel (i, j).
+     */
+    public Color get(int i, int j) {
+        if (isOriginUpperLeft) return new Color(image.getRGB(i, j));
+        else                   return new Color(image.getRGB(i, height - j - 1));
+    }
+
+   /**
+     * Set the color of pixel (i, j) to c.
+     */
+    public void set(int i, int j, Color c) {
+        if (c == null) { throw new RuntimeException("can't set Color to null"); }
+        if (isOriginUpperLeft) image.setRGB(i, j, c.getRGB());
+        else                   image.setRGB(i, height - j - 1, c.getRGB());
+    }
+
+   /**
+     * Is this Picture equal to obj?
+     */
+    public boolean equals(Object obj) {
+        if (obj == this) return true;
+        if (obj == null) return false;
+        if (obj.getClass() != this.getClass()) return false;
+        Picture that = (Picture) obj;
+        if (this.width()  != that.width())  return false;
+        if (this.height() != that.height()) return false;
+        for (int x = 0; x < width(); x++)
+            for (int y = 0; y < height(); y++)
+                if (!this.get(x, y).equals(that.get(x, y))) return false;
+        return true;
+    }
+
+
+   /**
+     * Save the picture to a file in a standard image format.
+     * The filetype must be .png or .jpg.
+     */
+    public void save(String name) {
+        save(new File(name));
+    }
+
+   /**
+     * Save the picture to a file in a standard image format.
+     */
+    public void save(File file) {
+        this.filename = file.getName();
+        if (frame != null) { frame.setTitle(filename); }
+        String suffix = filename.substring(filename.lastIndexOf('.') + 1);
+        suffix = suffix.toLowerCase();
+        if (suffix.equals("jpg") || suffix.equals("png")) {
+            try { ImageIO.write(image, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+        else {
+            System.out.println("Error: filename must end in .jpg or .png");
+        }
+    }
+
+   /**
+     * Opens a save dialog box when the user selects "Save As" from the menu.
+     */
+    public void actionPerformed(ActionEvent e) {
+        FileDialog chooser = new FileDialog(frame,
+                             "Use a .png or .jpg extension", FileDialog.SAVE);
+        chooser.setVisible(true);
+        if (chooser.getFile() != null) {
+            save(chooser.getDirectory() + File.separator + chooser.getFile());
+        }
+    }
+
+
+   /**
+     * Test client. Reads a picture specified by the command-line argument,
+     * and shows it in a window on the screen.
+     */
+    public static void main(String[] args) {
+        Picture pic = new Picture(args[0]);
+        System.out.printf("%d-by-%d\n", pic.width(), pic.height());
+        pic.show();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Point.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Point.java
new file mode 100644
index 000000000..60bcace44
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Point.java
@@ -0,0 +1,51 @@
+/*************************************************************************
+ *  Compilation:  javac Point.java
+ *  Execution:    java Point
+ *
+ *  Immutable data type for 2D points.
+ *
+ *************************************************************************/
+
+public class Point { 
+    private double x;   // Cartesian
+    private double y;   // coordinates
+   
+    // create and initialize a point with given (x, y)
+    public Point(double x, double y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    // return Euclidean distance between invoking point p and q
+    public double distanceTo(Point that) {
+        double dx = this.x - that.x;
+        double dy = this.y - that.y;
+        return Math.sqrt(dx*dx + dy*dy);
+    }
+
+    // draw point using standard draw
+    public void draw() {
+        StdDraw.point(x, y);
+    }
+
+    // draw the line from the invoking point p to q using standard draw
+    public void drawTo(Point that) {
+        StdDraw.line(this.x, this.y, that.x, that.y);
+    }
+
+    // return string representation of this point
+    public String toString() {
+        return "(" + x + ", " + y + ")";
+    }
+
+
+
+    // test client
+    public static void main(String[] args) {
+        Point p = new Point(0.6, 0.2);
+        System.out.println("p  = " + p);
+        Point q = new Point(0.5, 0.5);
+        System.out.println("q  = " + q);
+        System.out.println("dist(p, q) = " + p.distanceTo(q));
+    }
+}
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Queue.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Queue.java
new file mode 100644
index 000000000..a35c19a9b
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Queue.java
@@ -0,0 +1,161 @@
+/*************************************************************************
+ *  Compilation:  javac Queue.java
+ *  Execution:    java Queue < input.txt
+ *  Data files:   http://algs4.cs.princeton.edu/13stacks/tobe.txt  
+ *
+ *  A generic queue, implemented using a linked list.
+ *
+ *  % java Queue < tobe.txt 
+ *  to be or not to be (2 left on queue)
+ *
+ *************************************************************************/
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+/**
+ *  The <tt>Queue</tt> class represents a first-in-first-out (FIFO)
+ *  queue of generic items.
+ *  It supports the usual <em>enqueue</em> and <em>dequeue</em>
+ *  operations, along with methods for peeking at the first item,
+ *  testing if the queue is empty, and iterating through
+ *  the items in FIFO order.
+ *  <p>
+ *  This implementation uses a singly-linked list with a static nested class for
+ *  linked-list nodes. See {@link LinkedQueue} for the version from the
+ *  textbook that uses a non-static nested class.
+ *  The <em>enqueue</em>, <em>dequeue</em>, <em>peek</em>, <em>size</em>, and <em>is-empty</em>
+ *  operations all take constant time in the worst case.
+ *  <p>
+ *  For additional documentation, see <a href="http://algs4.cs.princeton.edu/13stacks">Section 1.3</a> of
+ *  <i>Algorithms, 4th Edition</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class Queue<Item> implements Iterable<Item> {
+    private int N;               // number of elements on queue
+    private Node<Item> first;    // beginning of queue
+    private Node<Item> last;     // end of queue
+
+    // helper linked list class
+    private static class Node<Item> {
+        private Item item;
+        private Node<Item> next;
+    }
+
+    /**
+     * Initializes an empty queue.
+     */
+    public Queue() {
+        first = null;
+        last  = null;
+        N = 0;
+    }
+
+    /**
+     * Is this queue empty?
+     * @return true if this queue is empty; false otherwise
+     */
+    public boolean isEmpty() {
+        return first == null;
+    }
+
+    /**
+     * Returns the number of items in this queue.
+     * @return the number of items in this queue
+     */
+    public int size() {
+        return N;     
+    }
+
+    /**
+     * Returns the item least recently added to this queue.
+     * @return the item least recently added to this queue
+     * @throws java.util.NoSuchElementException if this queue is empty
+     */
+    public Item peek() {
+        if (isEmpty()) throw new NoSuchElementException("Queue underflow");
+        return first.item;
+    }
+
+    /**
+     * Adds the item to this queue.
+     * @param item the item to add
+     */
+    public void enqueue(Item item) {
+        Node<Item> oldlast = last;
+        last = new Node<Item>();
+        last.item = item;
+        last.next = null;
+        if (isEmpty()) first = last;
+        else           oldlast.next = last;
+        N++;
+    }
+
+    /**
+     * Removes and returns the item on this queue that was least recently added.
+     * @return the item on this queue that was least recently added
+     * @throws java.util.NoSuchElementException if this queue is empty
+     */
+    public Item dequeue() {
+        if (isEmpty()) throw new NoSuchElementException("Queue underflow");
+        Item item = first.item;
+        first = first.next;
+        N--;
+        if (isEmpty()) last = null;   // to avoid loitering
+        return item;
+    }
+
+    /**
+     * Returns a string representation of this queue.
+     * @return the sequence of items in FIFO order, separated by spaces
+     */
+    public String toString() {
+        StringBuilder s = new StringBuilder();
+        for (Item item : this)
+            s.append(item + " ");
+        return s.toString();
+    } 
+
+    /**
+     * Returns an iterator that iterates over the items in this queue in FIFO order.
+     * @return an iterator that iterates over the items in this queue in FIFO order
+     */
+    public Iterator<Item> iterator()  {
+        return new ListIterator<Item>(first);  
+    }
+
+    // an iterator, doesn't implement remove() since it's optional
+    private class ListIterator<Item> implements Iterator<Item> {
+        private Node<Item> current;
+
+        public ListIterator(Node<Item> first) {
+            current = first;
+        }
+
+        public boolean hasNext()  { return current != null;                     }
+        public void remove()      { throw new UnsupportedOperationException();  }
+
+        public Item next() {
+            if (!hasNext()) throw new NoSuchElementException();
+            Item item = current.item;
+            current = current.next; 
+            return item;
+        }
+    }
+
+
+    /**
+     * Unit tests the <tt>Queue</tt> data type.
+     */
+    public static void main(String[] args) {
+        Queue<String> q = new Queue<String>();
+        while (!StdIn.isEmpty()) {
+            String item = StdIn.readString();
+            if (!item.equals("-")) q.enqueue(item);
+            else if (!q.isEmpty()) StdOut.print(q.dequeue() + " ");
+        }
+        StdOut.println("(" + q.size() + " left on queue)");
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/ST.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/ST.java
new file mode 100644
index 000000000..b5e786ae5
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/ST.java
@@ -0,0 +1,296 @@
+/*************************************************************************
+ *  Compilation:  javac ST.java
+ *  Execution:    java ST
+ *  
+ *  Sorted symbol table implementation using a java.util.TreeMap.
+ *  Does not allow duplicates.
+ *
+ *  % java ST
+ *
+ *************************************************************************/
+
+// This modified version by Will Gwozdz to make it visualizable!
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.SortedMap;
+import java.util.Set;
+import java.util.TreeSet;
+
+/**
+ *  The <tt>ST</tt> class represents an ordered symbol table of generic
+ *  key-value pairs.
+ *  It supports the usual <em>put</em>, <em>get</em>, <em>contains</em>,
+ *  <em>delete</em>, <em>size</em>, and <em>is-empty</em> methods.
+ *  It also provides ordered methods for finding the <em>minimum</em>,
+ *  <em>maximum</em>, <em>floor</em>, and <em>ceiling</em>.
+ *  It also provides a <em>keys</em> method for iterating over all of the keys.
+ *  A symbol table implements the <em>associative array</em> abstraction:
+ *  when associating a value with a key that is already in the symbol table,
+ *  the convention is to replace the old value with the new value.
+ *  Unlike {@link java.util.Map}, this class uses the convention that
+ *  values cannot be <tt>null</tt>&mdash;setting the
+ *  value associated with a key to <tt>null</tt> is equivalent to deleting the key
+ *  from the symbol table.
+ *  <p>
+ *  This implementation uses a balanced binary search tree. It requires that
+ *  the key type implements the <tt>Comparable</tt> interface and calls the
+ *  <tt>compareTo()</tt> and method to compare two keys. It does not call either
+ *  <tt>equals()</tt> or <tt>hashCode()</tt>.
+ *  The <em>put</em>, <em>contains</em>, <em>remove</em>, <em>minimum</em>,
+ *  <em>maximum</em>, <em>ceiling</em>, and <em>floor</em> operations each take
+ *  logarithmic time in the worst case.
+ *  The <em>size</em>, and <em>is-empty</em> operations take constant time.
+ *  Construction takes constant time.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/44st">Section 4.4</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne. 
+ */
+public class ST<Key extends Comparable<Key>, Value> implements Iterable<Key> {
+    private class Node {
+	Key key;
+	Value value;
+	Node left;
+	Node right;
+    }
+
+    private Node first;
+
+    /**
+     * Returns the value associated with the given key.
+     * @param key the key
+     * @return the value associated with the given key if the key is in the symbol table
+     *     and <tt>null</tt> if the key is not in the symbol table
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Value get(Key key) {
+        if (key == null) throw new NullPointerException("called get() with null key");
+        Node n = first;
+	while (n != null) {
+	    if (key.compareTo(n.key) < 0)
+		n = n.left;
+	    else if (key.compareTo(n.key) > 0)
+		n = n.right;
+	    else
+		return n.value;
+	}
+	return null;
+    }
+
+    /**
+     * Inserts the key-value pair into the symbol table, overwriting the old value
+     * with the new value if the key is already in the symbol table.
+     * If the value is <tt>null</tt>, this effectively deletes the key from the symbol table.
+     * @param key the key
+     * @param val the value
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public void put(Key key, Value val) {
+        if (key == null) throw new NullPointerException("called put() with null key");
+	//if (val == null) return delete(key); // restore this once delete is implemented.
+	Node add = new Node();
+	add.key = key;
+	add.value = val;
+	if (first == null)
+	    first = add;
+	else {
+            Node n = first;
+            while (true) {
+                if (key.compareTo(n.key) < 0) {
+                    if (n.left == null) {
+                        n.left = add;
+                        return;
+                    }
+                    n = n.left;
+                }
+                else if (key.compareTo(n.key) > 0) {
+                    if (n.right == null) {
+                        n.right = add;
+                        return;
+                    }
+                    n = n.right;
+                }
+                else {
+                    n.value = val;
+                    return;
+                }
+            }
+        }
+    }
+
+    /**
+     * Removes the key and associated value from the symbol table
+     * (if the key is in the symbol table).
+     * @param key the key
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public void delete(Key key) {
+        if (key == null) throw new NullPointerException("called delete() with null key");
+	put(key, null); // simply put a null value for now. a node with a null value counts as deleted.
+    }
+
+    /**
+     * Does this symbol table contain the given key?
+     * @param key the key
+     * @return <tt>true</tt> if this symbol table contains <tt>key</tt> and
+     *     <tt>false</tt> otherwise
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public boolean contains(Key key) {
+        if (key == null) throw new NullPointerException("called contains() with null key");
+	return (get(key) != null);
+    }
+
+    /**
+     * Returns the number of key-value pairs in this symbol table.
+     * @return the number of key-value pairs in this symbol table
+     */
+    public int size() {
+        return rCounter(first);
+    }
+
+    private int rCounter(Node n) {
+	if (n == null || n.value == null) return 0;
+	else return (1+rCounter(n.left)+rCounter(n.right));
+    }
+    /**
+     * Is this symbol table empty?
+     * @return <tt>true</tt> if this symbol table is empty and <tt>false</tt> otherwise
+     */
+    public boolean isEmpty() {
+        return size() == 0;
+    }
+
+    /**
+     * Returns all keys in the symbol table as an <tt>Iterable</tt>.
+     * To iterate over all of the keys in the symbol table named <tt>st</tt>,
+     * use the foreach notation: <tt>for (Key key : st.keys())</tt>.
+     * @return all keys in the sybol table as an <tt>Iterable</tt>
+     */
+    public Iterable<Key> keys() {
+	Set<Key> keys = new TreeSet<Key>();
+	return rKeys(keys, first);
+    }
+
+    private  Set<Key> rKeys(Set<Key> keys, Node n) { 
+	if (n != null) {
+	    rKeys(keys, n.right);
+	    if (n.value != null)
+		keys.add(n.key);
+	    rKeys(keys, n.left);
+	}
+	return keys;
+    } 
+
+    /**
+     * Returns all of the keys in the symbol table as an iterator.
+     * To iterate over all of the keys in a symbol table named <tt>st</tt>, use the
+     * foreach notation: <tt>for (Key key : st)</tt>.
+     * @return an iterator to all of the keys in the symbol table
+     */
+    public Iterator<Key> iterator() {
+        return keys().iterator();
+    }
+
+    /**
+     * Returns the smallest key in the symbol table.
+     * @return the smallest key in the symbol table
+     * @throws NoSuchElementException if the symbol table is empty
+     */
+    public Key min() {
+        if (isEmpty()) throw new NoSuchElementException("called min() with empty symbol table");
+	Node n = first;
+	while (n.left != null)
+	    n = n.left;
+	return n.key;
+    }
+
+    /**
+     * Returns the largest key in the symbol table.
+     * @return the largest key in the symbol table
+     * @throws NoSuchElementException if the symbol table is empty
+     */
+    public Key max() {
+        if (isEmpty()) throw new NoSuchElementException("called max() with empty symbol table");
+	Node n = first;
+	while (n.right != null)
+	    n = n.right;
+	return n.key;
+    }
+
+    /**
+     * Returns the smallest key in the symbol table greater than or equal to <tt>key</tt>.
+     * @return the smallest key in the symbol table greater than or equal to <tt>key</tt>
+     * @param key the key
+     * @throws NoSuchElementException if the symbol table is empty
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Key ceil(Key key) {
+        if (key == null) throw new NullPointerException("called ceil() with null key");
+	throw new RuntimeException("didnt bother inplementing ceil yet");
+    }
+
+    /**
+     * Returns the largest key in the symbol table less than or equal to <tt>key</tt>.
+     * @return the largest key in the symbol table less than or equal to <tt>key</tt>
+     * @param key the key
+     * @throws NoSuchElementException if the symbol table is empty
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Key floor(Key key) {
+        if (key == null) throw new NullPointerException("called floor() with null key");
+	throw new RuntimeException("didnt bother inplementing ceil yet");
+    }
+
+    /**
+     * Unit tests the <tt>ST</tt> data type.
+     */
+    public static void main(String[] args) {
+        ST<String, String> st = new ST<String, String>();
+
+       // insert some key-value pairs
+        st.put("www.cs.princeton.edu",   "128.112.136.11");
+        st.put("www.cs.princeton.edu",   "128.112.136.35");    // overwrite old value
+        st.put("www.princeton.edu",      "128.112.130.211");
+        st.put("www.math.princeton.edu", "128.112.18.11");
+        st.put("www.yale.edu",           "130.132.51.8");
+        st.put("www.amazon.com",         "207.171.163.90");
+        st.put("www.simpsons.com",       "209.123.16.34");
+        st.put("www.stanford.edu",       "171.67.16.120");
+        st.put("www.google.com",         "64.233.161.99");
+        st.put("www.ibm.com",            "129.42.16.99");
+        st.put("www.apple.com",          "17.254.0.91");
+        st.put("www.slashdot.com",       "66.35.250.150");
+        st.put("www.whitehouse.gov",     "204.153.49.136");
+        st.put("www.espn.com",           "199.181.132.250");
+        st.put("www.snopes.com",         "66.165.133.65");
+        st.put("www.movies.com",         "199.181.132.250");
+        st.put("www.cnn.com",            "64.236.16.20");
+        st.put("www.iitb.ac.in",         "202.68.145.210");
+
+
+        StdOut.println(st.get("www.cs.princeton.edu"));
+        StdOut.println(st.get("www.harvardsucks.com"));
+        StdOut.println(st.get("www.simpsons.com"));
+        StdOut.println();
+
+        StdOut.println("ceil(www.simpsonr.com) = " + st.ceil("www.simpsonr.com"));
+        StdOut.println("ceil(www.simpsons.com) = " + st.ceil("www.simpsons.com"));
+        StdOut.println("ceil(www.simpsont.com) = " + st.ceil("www.simpsont.com"));
+        StdOut.println("floor(www.simpsonr.com) = " + st.floor("www.simpsonr.com"));
+        StdOut.println("floor(www.simpsons.com) = " + st.floor("www.simpsons.com"));
+        StdOut.println("floor(www.simpsont.com) = " + st.floor("www.simpsont.com"));
+
+        StdOut.println();
+
+        StdOut.println("min key: " + st.min());
+        StdOut.println("max key: " + st.max());
+        StdOut.println("size:    " + st.size());
+        StdOut.println();
+
+        // print out all key-value pairs in lexicographic order
+        for (String s : st.keys())
+            StdOut.println(s + " " + st.get(s));
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/ST.java.original b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/ST.java.original
new file mode 100644
index 000000000..138d07beb
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/ST.java.original
@@ -0,0 +1,244 @@
+/*************************************************************************
+ *  Compilation:  javac ST.java
+ *  Execution:    java ST
+ *  
+ *  Sorted symbol table implementation using a java.util.TreeMap.
+ *  Does not allow duplicates.
+ *
+ *  % java ST
+ *
+ *************************************************************************/
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+/**
+ *  The <tt>ST</tt> class represents an ordered symbol table of generic
+ *  key-value pairs.
+ *  It supports the usual <em>put</em>, <em>get</em>, <em>contains</em>,
+ *  <em>delete</em>, <em>size</em>, and <em>is-empty</em> methods.
+ *  It also provides ordered methods for finding the <em>minimum</em>,
+ *  <em>maximum</em>, <em>floor</em>, and <em>ceiling</em>.
+ *  It also provides a <em>keys</em> method for iterating over all of the keys.
+ *  A symbol table implements the <em>associative array</em> abstraction:
+ *  when associating a value with a key that is already in the symbol table,
+ *  the convention is to replace the old value with the new value.
+ *  Unlike {@link java.util.Map}, this class uses the convention that
+ *  values cannot be <tt>null</tt>&mdash;setting the
+ *  value associated with a key to <tt>null</tt> is equivalent to deleting the key
+ *  from the symbol table.
+ *  <p>
+ *  This implementation uses a balanced binary search tree. It requires that
+ *  the key type implements the <tt>Comparable</tt> interface and calls the
+ *  <tt>compareTo()</tt> and method to compare two keys. It does not call either
+ *  <tt>equals()</tt> or <tt>hashCode()</tt>.
+ *  The <em>put</em>, <em>contains</em>, <em>remove</em>, <em>minimum</em>,
+ *  <em>maximum</em>, <em>ceiling</em>, and <em>floor</em> operations each take
+ *  logarithmic time in the worst case.
+ *  The <em>size</em>, and <em>is-empty</em> operations take constant time.
+ *  Construction takes constant time.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/44st">Section 4.4</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne. 
+ */
+public class ST<Key extends Comparable<Key>, Value> implements Iterable<Key> {
+
+    private TreeMap<Key, Value> st;
+
+    /**
+     * Initializes an empty symbol table.
+     */
+    public ST() {
+        st = new TreeMap<Key, Value>();
+    }
+
+
+    /**
+     * Returns the value associated with the given key.
+     * @param key the key
+     * @return the value associated with the given key if the key is in the symbol table
+     *     and <tt>null</tt> if the key is not in the symbol table
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Value get(Key key) {
+        if (key == null) throw new NullPointerException("called get() with null key");
+        return st.get(key);
+    }
+
+    /**
+     * Inserts the key-value pair into the symbol table, overwriting the old value
+     * with the new value if the key is already in the symbol table.
+     * If the value is <tt>null</tt>, this effectively deletes the key from the symbol table.
+     * @param key the key
+     * @param val the value
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public void put(Key key, Value val) {
+        if (key == null) throw new NullPointerException("called put() with null key");
+        if (val == null) st.remove(key);
+        else             st.put(key, val);
+    }
+
+    /**
+     * Removes the key and associated value from the symbol table
+     * (if the key is in the symbol table).
+     * @param key the key
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public void delete(Key key) {
+        if (key == null) throw new NullPointerException("called delete() with null key");
+        st.remove(key);
+    }
+
+    /**
+     * Does this symbol table contain the given key?
+     * @param key the key
+     * @return <tt>true</tt> if this symbol table contains <tt>key</tt> and
+     *     <tt>false</tt> otherwise
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public boolean contains(Key key) {
+        if (key == null) throw new NullPointerException("called contains() with null key");
+        return st.containsKey(key);
+    }
+
+    /**
+     * Returns the number of key-value pairs in this symbol table.
+     * @return the number of key-value pairs in this symbol table
+     */
+    public int size() {
+        return st.size();
+    }
+
+    /**
+     * Is this symbol table empty?
+     * @return <tt>true</tt> if this symbol table is empty and <tt>false</tt> otherwise
+     */
+    public boolean isEmpty() {
+        return size() == 0;
+    }
+
+    /**
+     * Returns all keys in the symbol table as an <tt>Iterable</tt>.
+     * To iterate over all of the keys in the symbol table named <tt>st</tt>,
+     * use the foreach notation: <tt>for (Key key : st.keys())</tt>.
+     * @return all keys in the sybol table as an <tt>Iterable</tt>
+     */
+    public Iterable<Key> keys() {
+        return st.keySet();
+    }
+
+    /**
+     * Returns all of the keys in the symbol table as an iterator.
+     * To iterate over all of the keys in a symbol table named <tt>st</tt>, use the
+     * foreach notation: <tt>for (Key key : st)</tt>.
+     * @return an iterator to all of the keys in the symbol table
+     */
+    public Iterator<Key> iterator() {
+        return st.keySet().iterator();
+    }
+
+    /**
+     * Returns the smallest key in the symbol table.
+     * @return the smallest key in the symbol table
+     * @throws NoSuchElementException if the symbol table is empty
+     */
+    public Key min() {
+        if (isEmpty()) throw new NoSuchElementException("called min() with empty symbol table");
+        return st.firstKey();
+    }
+
+    /**
+     * Returns the largest key in the symbol table.
+     * @return the largest key in the symbol table
+     * @throws NoSuchElementException if the symbol table is empty
+     */
+    public Key max() {
+        if (isEmpty()) throw new NoSuchElementException("called max() with empty symbol table");
+        return st.lastKey();
+    }
+
+    /**
+     * Returns the smallest key in the symbol table greater than or equal to <tt>key</tt>.
+     * @return the smallest key in the symbol table greater than or equal to <tt>key</tt>
+     * @param key the key
+     * @throws NoSuchElementException if the symbol table is empty
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Key ceil(Key key) {
+        if (key == null) throw new NullPointerException("called ceil() with null key");
+        SortedMap<Key, Value> tail = st.tailMap(key);
+        if (tail.isEmpty()) throw new NoSuchElementException();
+        return tail.firstKey();
+    }
+
+    /**
+     * Returns the largest key in the symbol table less than or equal to <tt>key</tt>.
+     * @return the largest key in the symbol table less than or equal to <tt>key</tt>
+     * @param key the key
+     * @throws NoSuchElementException if the symbol table is empty
+     * @throws NullPointerException if <tt>key</tt> is <tt>null</tt>
+     */
+    public Key floor(Key key) {
+        if (key == null) throw new NullPointerException("called floor() with null key");
+        // headMap does not include key if present (!)
+        if (st.containsKey(key)) return key;
+        SortedMap<Key, Value> head = st.headMap(key);
+        if (head.isEmpty()) throw new NoSuchElementException();
+        return head.lastKey();
+    }
+
+    /**
+     * Unit tests the <tt>ST</tt> data type.
+     */
+    public static void main(String[] args) {
+        ST<String, String> st = new ST<String, String>();
+
+       // insert some key-value pairs
+        st.put("www.cs.princeton.edu",   "128.112.136.11");
+        st.put("www.cs.princeton.edu",   "128.112.136.35");    // overwrite old value
+        st.put("www.princeton.edu",      "128.112.130.211");
+        st.put("www.math.princeton.edu", "128.112.18.11");
+        st.put("www.yale.edu",           "130.132.51.8");
+        st.put("www.amazon.com",         "207.171.163.90");
+        st.put("www.simpsons.com",       "209.123.16.34");
+        st.put("www.stanford.edu",       "171.67.16.120");
+        st.put("www.google.com",         "64.233.161.99");
+        st.put("www.ibm.com",            "129.42.16.99");
+        st.put("www.apple.com",          "17.254.0.91");
+        st.put("www.slashdot.com",       "66.35.250.150");
+        st.put("www.whitehouse.gov",     "204.153.49.136");
+        st.put("www.espn.com",           "199.181.132.250");
+        st.put("www.snopes.com",         "66.165.133.65");
+        st.put("www.movies.com",         "199.181.132.250");
+        st.put("www.cnn.com",            "64.236.16.20");
+        st.put("www.iitb.ac.in",         "202.68.145.210");
+
+
+        StdOut.println(st.get("www.cs.princeton.edu"));
+        StdOut.println(st.get("www.harvardsucks.com"));
+        StdOut.println(st.get("www.simpsons.com"));
+        StdOut.println();
+
+        StdOut.println("ceil(www.simpsonr.com) = " + st.ceil("www.simpsonr.com"));
+        StdOut.println("ceil(www.simpsons.com) = " + st.ceil("www.simpsons.com"));
+        StdOut.println("ceil(www.simpsont.com) = " + st.ceil("www.simpsont.com"));
+        StdOut.println("floor(www.simpsonr.com) = " + st.floor("www.simpsonr.com"));
+        StdOut.println("floor(www.simpsons.com) = " + st.floor("www.simpsons.com"));
+        StdOut.println("floor(www.simpsont.com) = " + st.floor("www.simpsont.com"));
+
+        StdOut.println();
+
+        StdOut.println("min key: " + st.min());
+        StdOut.println("max key: " + st.max());
+        StdOut.println("size:    " + st.size());
+        StdOut.println();
+
+        // print out all key-value pairs in lexicographic order
+        for (String s : st.keys())
+            StdOut.println(s + " " + st.get(s));
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Stack.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Stack.java
new file mode 100644
index 000000000..36b7571f3
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Stack.java
@@ -0,0 +1,164 @@
+/*************************************************************************
+ *  Compilation:  javac Stack.java
+ *  Execution:    java Stack < input.txt
+ *
+ *  A generic stack, implemented using a singly-linked list.
+ *  Each stack element is of type Item.
+ *
+ *  This version uses a static nested class Node (to save 8 bytes per
+ *  Node), whereas the version in the textbook uses a non-static nested
+ *  class (for simplicity).
+ *  
+ *  % more tobe.txt 
+ *  to be or not to - be - - that - - - is
+ *
+ *  % java Stack < tobe.txt
+ *  to be not that or be (2 left on stack)
+ *
+ *************************************************************************/
+
+import java.util.Iterator;
+import java.util.NoSuchElementException;
+
+
+/**
+ *  The <tt>Stack</tt> class represents a last-in-first-out (LIFO) stack of generic items.
+ *  It supports the usual <em>push</em> and <em>pop</em> operations, along with methods
+ *  for peeking at the top item, testing if the stack is empty, and iterating through
+ *  the items in LIFO order.
+ *  <p>
+ *  This implementation uses a singly-linked list with a static nested class for
+ *  linked-list nodes. See {@link LinkedStack} for the version from the
+ *  textbook that uses a non-static nested class.
+ *  The <em>push</em>, <em>pop</em>, <em>peek</em>, <em>size</em>, and <em>is-empty</em>
+ *  operations all take constant time in the worst case.
+ *  <p>
+ *  For additional documentation, see <a href="/algs4/13stacks">Section 1.3</a> of
+ *  <i>Algorithms, 4th Edition</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class Stack<Item> implements Iterable<Item> {
+    private int N;                // size of the stack
+    private Node<Item> first;     // top of stack
+
+    // helper linked list class
+    private static class Node<Item> {
+        private Item item;
+        private Node<Item> next;
+    }
+
+    /**
+     * Initializes an empty stack.
+     */
+    public Stack() {
+        first = null;
+        N = 0;
+    }
+
+    /**
+     * Is this stack empty?
+     * @return true if this stack is empty; false otherwise
+     */
+    public boolean isEmpty() {
+        return first == null;
+    }
+
+    /**
+     * Returns the number of items in the stack.
+     * @return the number of items in the stack
+     */
+    public int size() {
+        return N;
+    }
+
+    /**
+     * Adds the item to this stack.
+     * @param item the item to add
+     */
+    public void push(Item item) {
+        Node<Item> oldfirst = first;
+        first = new Node<Item>();
+        first.item = item;
+        first.next = oldfirst;
+        N++;
+    }
+
+    /**
+     * Removes and returns the item most recently added to this stack.
+     * @return the item most recently added
+     * @throws java.util.NoSuchElementException if this stack is empty
+     */
+    public Item pop() {
+        if (isEmpty()) throw new NoSuchElementException("Stack underflow");
+        Item item = first.item;        // save item to return
+        first = first.next;            // delete first node
+        N--;
+        return item;                   // return the saved item
+    }
+
+
+    /**
+     * Returns (but does not remove) the item most recently added to this stack.
+     * @return the item most recently added to this stack
+     * @throws java.util.NoSuchElementException if this stack is empty
+     */
+    public Item peek() {
+        if (isEmpty()) throw new NoSuchElementException("Stack underflow");
+        return first.item;
+    }
+
+    /**
+     * Returns a string representation of this stack.
+     * @return the sequence of items in the stack in LIFO order, separated by spaces
+     */
+    public String toString() {
+        StringBuilder s = new StringBuilder();
+        for (Item item : this)
+            s.append(item + " ");
+        return s.toString();
+    }
+       
+
+    /**
+     * Returns an iterator to this stack that iterates through the items in LIFO order.
+     * @return an iterator to this stack that iterates through the items in LIFO order.
+     */
+    public Iterator<Item> iterator() {
+        return new ListIterator<Item>(first);
+    }
+
+    // an iterator, doesn't implement remove() since it's optional
+    private class ListIterator<Item> implements Iterator<Item> {
+        private Node<Item> current;
+
+        public ListIterator(Node<Item> first) {
+            current = first;
+        }
+        public boolean hasNext()  { return current != null;                     }
+        public void remove()      { throw new UnsupportedOperationException();  }
+
+        public Item next() {
+            if (!hasNext()) throw new NoSuchElementException();
+            Item item = current.item;
+            current = current.next; 
+            return item;
+        }
+    }
+
+
+    /**
+     * Unit tests the <tt>Stack</tt> data type.
+     */
+    public static void main(String[] args) {
+        Stack<String> s = new Stack<String>();
+        while (!StdIn.isEmpty()) {
+            String item = StdIn.readString();
+            if (!item.equals("-")) s.push(item);
+            else if (!s.isEmpty()) StdOut.print(s.pop() + " ");
+        }
+        StdOut.println("(" + s.size() + " left on stack)");
+    }
+}
+
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdArrayIO.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdArrayIO.java
new file mode 100644
index 000000000..e919715e8
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdArrayIO.java
@@ -0,0 +1,252 @@
+
+/*************************************************************************
+ *  Compilation:  javac StdArrayIO.java
+ *  Execution:    java StdArrayIO < input.txt
+ *
+ *  A library for reading in 1D and 2D arrays of integers, doubles,
+ *  and booleans from standard input and printing them out to
+ *  standard output.
+ *
+ *  % more tinyDouble1D.txt 
+ *  4
+ *    .000  .246  .222  -.032
+ *
+ *  % more tinyDouble2D.txt 
+ *  4 3 
+ *    .000  .270  .000 
+ *    .246  .224 -.036 
+ *    .222  .176  .0893 
+ *   -.032  .739  .270 
+ *
+ *  % more tinyBoolean2D.txt 
+ *  4 3 
+ *    1 1 0
+ *    0 0 0
+ *    0 1 1
+ *    1 1 1
+ *
+ *  % cat tinyDouble1D.txt tinyDouble2D.txt tinyBoolean2D.txt | java StdArrayIO
+ *  4
+ *    0.00000   0.24600   0.22200  -0.03200 
+ *  
+ *  4 3
+ *    0.00000   0.27000   0.00000 
+ *    0.24600   0.22400  -0.03600 
+ *    0.22200   0.17600   0.08930 
+ *    0.03200   0.73900   0.27000 
+ *
+ *  4 3
+ *  1 1 0 
+ *  0 0 0 
+ *  0 1 1 
+ *  1 1 1 
+ *
+ *************************************************************************/
+
+
+/**
+ *  <i>Standard array IO</i>. This class provides methods for reading
+ *  in 1D and 2D arrays from standard input and printing out to 
+ *  standard output.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/22libary">Section 2.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public class StdArrayIO {
+
+    /**
+     * Read in and return an array of doubles from standard input.
+     */
+    public static double[] readDouble1D() {
+        int N = StdIn.readInt();
+        double[] a = new double[N];
+        for (int i = 0; i < N; i++) {
+            a[i] = StdIn.readDouble();
+        }
+        return a;
+    }
+
+    /**
+     * Print an array of doubles to standard output.
+     */
+    public static void print(double[] a) {
+        int N = a.length;
+        StdOut.println(N);
+        for (int i = 0; i < N; i++) {
+            StdOut.printf("%9.5f ", a[i]);
+        }
+        StdOut.println();
+    }
+
+        
+    /**
+     * Read in and return an M-by-N array of doubles from standard input.
+     */
+    public static double[][] readDouble2D() {
+        int M = StdIn.readInt();
+        int N = StdIn.readInt();
+        double[][] a = new double[M][N];
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                a[i][j] = StdIn.readDouble();
+            }
+        }
+        return a;
+    }
+
+    /**
+     * Print the M-by-N array of doubles to standard output.
+     */
+    public static void print(double[][] a) {
+        int M = a.length;
+        int N = a[0].length;
+        StdOut.println(M + " " + N);
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                StdOut.printf("%9.5f ", a[i][j]);
+            }
+            StdOut.println();
+        }
+    }
+
+
+    /**
+     * Read in and return an array of ints from standard input.
+     */
+    public static int[] readInt1D() {
+        int N = StdIn.readInt();
+        int[] a = new int[N];
+        for (int i = 0; i < N; i++) {
+            a[i] = StdIn.readInt();
+        }
+        return a;
+    }
+
+    /**
+     * Print an array of ints to standard output.
+     */
+    public static void print(int[] a) {
+        int N = a.length;
+        StdOut.println(N);
+        for (int i = 0; i < N; i++) {
+            StdOut.printf("%9d ", a[i]);
+        }
+        StdOut.println();
+    }
+
+        
+    /**
+     * Read in and return an M-by-N array of ints from standard input.
+     */
+    public static int[][] readInt2D() {
+        int M = StdIn.readInt();
+        int N = StdIn.readInt();
+        int[][] a = new int[M][N];
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                a[i][j] = StdIn.readInt();
+            }
+        }
+        return a;
+    }
+
+    /**
+     * Print the M-by-N array of ints to standard output.
+     */
+    public static void print(int[][] a) {
+        int M = a.length;
+        int N = a[0].length;
+        StdOut.println(M + " " + N);
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                StdOut.printf("%9d ", a[i][j]);
+            }
+            StdOut.println();
+        }
+    }
+
+
+    /**
+     * Read in and return an array of booleans from standard input.
+     */
+    public static boolean[] readBoolean1D() {
+        int N = StdIn.readInt();
+        boolean[] a = new boolean[N];
+        for (int i = 0; i < N; i++) {
+            a[i] = StdIn.readBoolean();
+        }
+        return a;
+    }
+
+    /**
+     * Print an array of booleans to standard output.
+     */
+    public static void print(boolean[] a) {
+        int N = a.length;
+        StdOut.println(N);
+        for (int i = 0; i < N; i++) {
+            if (a[i]) StdOut.print("1 ");
+            else      StdOut.print("0 ");
+        }
+        StdOut.println();
+    }
+
+    /**
+     * Read in and return an M-by-N array of booleans from standard input.
+     */
+    public static boolean[][] readBoolean2D() {
+        int M = StdIn.readInt();
+        int N = StdIn.readInt();
+        boolean[][] a = new boolean[M][N];
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                a[i][j] = StdIn.readBoolean();
+            }
+        }
+        return a;
+    }
+
+   /**
+     * Print the  M-by-N array of booleans to standard output.
+     */
+    public static void print(boolean[][] a) {
+        int M = a.length;
+        int N = a[0].length;
+        StdOut.println(M + " " + N);
+        for (int i = 0; i < M; i++) {
+            for (int j = 0; j < N; j++) {
+                if (a[i][j]) StdOut.print("1 ");
+                else         StdOut.print("0 ");
+            }
+            StdOut.println();
+        }
+    }
+
+
+   /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+
+        // read and print an array of doubles
+        double[] a = StdArrayIO.readDouble1D();
+        StdArrayIO.print(a);
+        StdOut.println();
+
+        // read and print a matrix of doubles
+        double[][] b = StdArrayIO.readDouble2D();
+        StdArrayIO.print(b);
+        StdOut.println();
+
+        // read and print a matrix of doubles
+        boolean[][] d = StdArrayIO.readBoolean2D();
+        StdArrayIO.print(d);
+        StdOut.println();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdAudio.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdAudio.java
new file mode 100644
index 000000000..99da95a85
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdAudio.java
@@ -0,0 +1,281 @@
+/*************************************************************************
+ *  Compilation:  javac StdAudio.java
+ *  Execution:    java StdAudio
+ *  
+ *  Simple library for reading, writing, and manipulating .wav files.
+
+ *
+ *  Limitations
+ *  -----------
+ *    - Does not seem to work properly when reading .wav files from a .jar file.
+ *    - Assumes the audio is monaural, with sampling rate of 44,100.
+ *
+ *************************************************************************/
+
+import java.applet.*;
+import java.io.*;
+import java.net.*;
+import javax.sound.sampled.*;
+
+/**
+ *  <i>Standard audio</i>. This class provides a basic capability for
+ *  creating, reading, and saving audio. 
+ *  <p>
+ *  The audio format uses a sampling rate of 44,100 (CD quality audio), 16-bit, monaural.
+ *
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdAudio {
+
+    /**
+     *  The sample rate - 44,100 Hz for CD quality audio.
+     */
+    public static final int SAMPLE_RATE = 44100;
+
+    private static final int BYTES_PER_SAMPLE = 2;                // 16-bit audio
+    private static final int BITS_PER_SAMPLE = 16;                // 16-bit audio
+    private static final double MAX_16_BIT = Short.MAX_VALUE;     // 32,767
+    private static final int SAMPLE_BUFFER_SIZE = 4096;
+
+
+    private static SourceDataLine line;   // to play the sound
+    private static byte[] buffer;         // our internal buffer
+    private static int bufferSize = 0;    // number of samples currently in internal buffer
+
+    // do not instantiate
+    private StdAudio() { }
+
+   
+    // static initializer
+    static { init(); }
+
+    // open up an audio stream
+    private static void init() {
+        try {
+            // 44,100 samples per second, 16-bit audio, mono, signed PCM, little Endian
+            AudioFormat format = new AudioFormat((float) SAMPLE_RATE, BITS_PER_SAMPLE, 1, true, false);
+            DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
+
+            line = (SourceDataLine) AudioSystem.getLine(info);
+            line.open(format, SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE);
+            
+            // the internal buffer is a fraction of the actual buffer size, this choice is arbitrary
+            // it gets divided because we can't expect the buffered data to line up exactly with when
+            // the sound card decides to push out its samples.
+            buffer = new byte[SAMPLE_BUFFER_SIZE * BYTES_PER_SAMPLE/3];
+        } catch (Exception e) {
+            System.out.println(e.getMessage());
+            System.exit(1);
+        }
+
+        // no sound gets made before this call
+        line.start();
+    }
+
+
+    /**
+     * Close standard audio.
+     */
+    public static void close() {
+        line.drain();
+        line.stop();
+    }
+    
+    /**
+     * Write one sample (between -1.0 and +1.0) to standard audio. If the sample
+     * is outside the range, it will be clipped.
+     */
+    public static void play(double in) {
+
+        // clip if outside [-1, +1]
+        if (in < -1.0) in = -1.0;
+        if (in > +1.0) in = +1.0;
+
+        // convert to bytes
+        short s = (short) (MAX_16_BIT * in);
+        buffer[bufferSize++] = (byte) s;
+        buffer[bufferSize++] = (byte) (s >> 8);   // little Endian
+
+        // send to sound card if buffer is full        
+        if (bufferSize >= buffer.length) {
+            line.write(buffer, 0, buffer.length);
+            bufferSize = 0;
+        }
+    }
+
+    /**
+     * Write an array of samples (between -1.0 and +1.0) to standard audio. If a sample
+     * is outside the range, it will be clipped.
+     */
+    public static void play(double[] input) {
+        for (int i = 0; i < input.length; i++) {
+            play(input[i]);
+        }
+    }
+
+    /**
+     * Read audio samples from a file (in .wav or .au format) and return them as a double array
+     * with values between -1.0 and +1.0.
+     */
+    public static double[] read(String filename) {
+        byte[] data = readByte(filename);
+        int N = data.length;
+        double[] d = new double[N/2];
+        for (int i = 0; i < N/2; i++) {
+            d[i] = ((short) (((data[2*i+1] & 0xFF) << 8) + (data[2*i] & 0xFF))) / ((double) MAX_16_BIT);
+        }
+        return d;
+    }
+
+
+
+
+    /**
+     * Play a sound file (in .wav, .mid, or .au format) in a background thread.
+     */
+    public static void play(String filename) {
+        URL url = null;
+        try {
+            File file = new File(filename);
+            if (file.canRead()) url = file.toURI().toURL();
+        }
+        catch (MalformedURLException e) { e.printStackTrace(); }
+        // URL url = StdAudio.class.getResource(filename);
+        if (url == null) throw new RuntimeException("audio " + filename + " not found");
+        AudioClip clip = Applet.newAudioClip(url);
+        clip.play();
+    }
+
+    /**
+     * Loop a sound file (in .wav, .mid, or .au format) in a background thread.
+     */
+    public static void loop(String filename) {
+        URL url = null;
+        try {
+            File file = new File(filename);
+            if (file.canRead()) url = file.toURI().toURL();
+        }
+        catch (MalformedURLException e) { e.printStackTrace(); }
+        // URL url = StdAudio.class.getResource(filename);
+        if (url == null) throw new RuntimeException("audio " + filename + " not found");
+        AudioClip clip = Applet.newAudioClip(url);
+        clip.loop();
+    }
+
+
+    // return data as a byte array
+    private static byte[] readByte(String filename) {
+        byte[] data = null;
+        AudioInputStream ais = null;
+        try {
+
+            // try to read from file
+            File file = new File(filename);
+            if (file.exists()) {
+                ais = AudioSystem.getAudioInputStream(file);
+                data = new byte[ais.available()];
+                ais.read(data);
+            }
+
+            // try to read from URL
+            else {
+                URL url = StdAudio.class.getResource(filename);
+                ais = AudioSystem.getAudioInputStream(url);
+                data = new byte[ais.available()];
+                ais.read(data);
+            }
+        }
+        catch (Exception e) {
+            System.out.println(e.getMessage());
+            throw new RuntimeException("Could not read " + filename);
+        }
+
+        return data;
+    }
+
+
+
+    /**
+     * Save the double array as a sound file (using .wav or .au format).
+     */
+    public static void save(String filename, double[] input) {
+
+        // assumes 44,100 samples per second
+        // use 16-bit audio, mono, signed PCM, little Endian
+        AudioFormat format = new AudioFormat(SAMPLE_RATE, 16, 1, true, false);
+        byte[] data = new byte[2 * input.length];
+        for (int i = 0; i < input.length; i++) {
+            int temp = (short) (input[i] * MAX_16_BIT);
+            data[2*i + 0] = (byte) temp;
+            data[2*i + 1] = (byte) (temp >> 8);
+        }
+
+        // now save the file
+        try {
+            ByteArrayInputStream bais = new ByteArrayInputStream(data);
+            AudioInputStream ais = new AudioInputStream(bais, format, input.length);
+            if (filename.endsWith(".wav") || filename.endsWith(".WAV")) {
+                AudioSystem.write(ais, AudioFileFormat.Type.WAVE, new File(filename));
+            }
+            else if (filename.endsWith(".au") || filename.endsWith(".AU")) {
+                AudioSystem.write(ais, AudioFileFormat.Type.AU, new File(filename));
+            }
+            else {
+                throw new RuntimeException("File format not supported: " + filename);
+            }
+        }
+        catch (Exception e) {
+            System.out.println(e);
+            System.exit(1);
+        }
+    }
+
+
+
+
+   /***********************************************************************
+    * sample test client
+    ***********************************************************************/
+
+    // create a note (sine wave) of the given frequency (Hz), for the given
+    // duration (seconds) scaled to the given volume (amplitude)
+    private static double[] note(double hz, double duration, double amplitude) {
+        int N = (int) (StdAudio.SAMPLE_RATE * duration);
+        double[] a = new double[N+1];
+        for (int i = 0; i <= N; i++)
+            a[i] = amplitude * Math.sin(2 * Math.PI * i * hz / StdAudio.SAMPLE_RATE);
+        return a;
+    }
+
+    /**
+     * Test client - play an A major scale to standard audio.
+     */
+    public static void main(String[] args) {
+        
+        // 440 Hz for 1 sec
+        double freq = 440.0;
+        for (int i = 0; i <= StdAudio.SAMPLE_RATE; i++) {
+            StdAudio.play(0.5 * Math.sin(2*Math.PI * freq * i / StdAudio.SAMPLE_RATE));
+        }
+        
+        // scale increments
+        int[] steps = { 0, 2, 4, 5, 7, 9, 11, 12 };
+        for (int i = 0; i < steps.length; i++) {
+            double hz = 440.0 * Math.pow(2, steps[i] / 12.0);
+            StdAudio.play(note(hz, 1.0, 0.5));
+        }
+
+
+        // need to call this in non-interactive stuff so the program doesn't terminate
+        // until all the sound leaves the speaker.
+        StdAudio.close(); 
+
+        // need to terminate a Java program with sound
+        System.exit(0);
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdDraw.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdDraw.java
new file mode 100644
index 000000000..eb99ec57c
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdDraw.java
@@ -0,0 +1,1160 @@
+/*************************************************************************
+ *  Compilation:  javac StdDraw.java
+ *  Execution:    java StdDraw
+ *
+ *  Standard drawing library. This class provides a basic capability for
+ *  creating drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *
+ *  Todo
+ *  ----
+ *    -  Add support for gradient fill, etc.
+ *
+ *  Remarks
+ *  -------
+ *    -  don't use AffineTransform for rescaling since it inverts
+ *       images and strings
+ *    -  careful using setFont in inner loop within an animation -
+ *       it can cause flicker
+ *
+ *************************************************************************/
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.geom.*;
+import java.awt.image.*;
+import java.io.*;
+import java.net.*;
+import java.util.LinkedList;
+import java.util.TreeSet;
+import javax.imageio.ImageIO;
+import javax.swing.*;
+
+/**
+ *  <i>Standard draw</i>. This class provides a basic capability for
+ *  creating drawings with your programs. It uses a simple graphics model that
+ *  allows you to create drawings consisting of points, lines, and curves
+ *  in a window on your computer and to save the drawings to a file.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdDraw implements ActionListener, MouseListener, MouseMotionListener, KeyListener {
+
+    static final boolean isVisualizer = true;
+
+    // pre-defined colors
+    public static final Color BLACK      = Color.BLACK;
+    public static final Color BLUE       = Color.BLUE;
+    public static final Color CYAN       = Color.CYAN;
+    public static final Color DARK_GRAY  = Color.DARK_GRAY;
+    public static final Color GRAY       = Color.GRAY;
+    public static final Color GREEN      = Color.GREEN;
+    public static final Color LIGHT_GRAY = Color.LIGHT_GRAY;
+    public static final Color MAGENTA    = Color.MAGENTA;
+    public static final Color ORANGE     = Color.ORANGE;
+    public static final Color PINK       = Color.PINK;
+    public static final Color RED        = Color.RED;
+    public static final Color WHITE      = Color.WHITE;
+    public static final Color YELLOW     = Color.YELLOW;
+
+    /**
+     * Shade of blue used in Introduction to Programming in Java.
+     * It is Pantone 300U. The RGB values are approximately (9, 90, 166).
+     */
+    public static final Color BOOK_BLUE       = new Color(  9,  90, 166);
+    public static final Color BOOK_LIGHT_BLUE = new Color(103, 198, 243);
+
+    /**
+     * Shade of red used in Algorithms 4th edition.
+     * It is Pantone 1805U. The RGB values are approximately (150, 35, 31).
+     */
+    public static final Color BOOK_RED = new Color(150, 35, 31);
+
+    // default colors
+    private static final Color DEFAULT_PEN_COLOR   = BLACK;
+    private static final Color DEFAULT_CLEAR_COLOR = WHITE;
+
+    // current pen color
+    private static Color penColor;
+
+    // default canvas size is DEFAULT_SIZE-by-DEFAULT_SIZE
+    private static final int DEFAULT_SIZE = 512;
+    private static int width  = DEFAULT_SIZE;
+    private static int height = DEFAULT_SIZE;
+
+    // default pen radius
+    private static final double DEFAULT_PEN_RADIUS = 0.002;
+
+    // current pen radius
+    private static double penRadius;
+
+    // show we draw immediately or wait until next show?
+    private static boolean defer = false;
+
+    // boundary of drawing canvas, 5% border
+    private static final double BORDER = 0.05;
+    private static final double DEFAULT_XMIN = 0.0;
+    private static final double DEFAULT_XMAX = 1.0;
+    private static final double DEFAULT_YMIN = 0.0;
+    private static final double DEFAULT_YMAX = 1.0;
+    private static double xmin, ymin, xmax, ymax;
+
+    // for synchronization
+    private static Object mouseLock = new Object();
+    private static Object keyLock = new Object();
+
+    // default font
+    private static final Font DEFAULT_FONT = isVisualizer ? null : new Font("SansSerif", Font.PLAIN, 16);
+
+    // current font
+    private static Font font;
+
+    // double buffered graphics
+    private static BufferedImage offscreenImage, onscreenImage;
+    private static Graphics2D offscreen, onscreen;
+
+    // singleton for callbacks: avoids generation of extra .class files
+    private static StdDraw std = isVisualizer ? null : new StdDraw();
+
+    // the frame for drawing to the screen
+    private static JFrame frame;
+
+    // mouse state
+    private static boolean mousePressed = false;
+    private static double mouseX = 0;
+    private static double mouseY = 0;
+
+    // queue of typed key characters
+    private static LinkedList<Character> keysTyped = isVisualizer ? null : new LinkedList<Character>();
+
+    // set of key codes currently pressed down
+    private static TreeSet<Integer> keysDown = isVisualizer ? null : new TreeSet<Integer>();
+  
+
+    // singleton pattern: client can't instantiate
+    private StdDraw() { }
+
+
+    // static initializer
+    static { if (!isVisualizer) init(); }
+
+    /**
+     * Set the window size to the default size 512-by-512 pixels.
+     */
+    public static void setCanvasSize() {
+        if (isVisualizer) return;
+        setCanvasSize(DEFAULT_SIZE, DEFAULT_SIZE);
+    }
+
+    /**
+     * Set the window size to w-by-h pixels.
+     *
+     * @param w the width as a number of pixels
+     * @param h the height as a number of pixels
+     * @throws a IllegalArgumentException if the width or height is 0 or negative
+     */
+    public static void setCanvasSize(int w, int h) {
+        if (isVisualizer) return;
+        if (w < 1 || h < 1) throw new IllegalArgumentException("width and height must be positive");
+        width = w;
+        height = h;
+        init();
+    }
+
+    // init
+    private static void init() {
+        if (isVisualizer) return;
+        if (frame != null) frame.setVisible(false);
+        frame = new JFrame();
+        offscreenImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        onscreenImage  = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+        offscreen = offscreenImage.createGraphics();
+        onscreen  = onscreenImage.createGraphics();
+        setXscale();
+        setYscale();
+        offscreen.setColor(DEFAULT_CLEAR_COLOR);
+        offscreen.fillRect(0, 0, width, height);
+        setPenColor();
+        setPenRadius();
+        setFont();
+        clear();
+
+        // add antialiasing
+        RenderingHints hints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,
+                                                  RenderingHints.VALUE_ANTIALIAS_ON);
+        hints.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
+        offscreen.addRenderingHints(hints);
+
+        // frame stuff
+        ImageIcon icon = new ImageIcon(onscreenImage);
+        JLabel draw = new JLabel(icon);
+
+        draw.addMouseListener(std);
+        draw.addMouseMotionListener(std);
+
+        frame.setContentPane(draw);
+        frame.addKeyListener(std);    // JLabel cannot get keyboard focus
+        frame.setResizable(false);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);            // closes all windows
+        // frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);      // closes only current window
+        frame.setTitle("Standard Draw");
+        frame.setJMenuBar(createMenuBar());
+        frame.pack();
+        frame.requestFocusInWindow();
+        frame.setVisible(true);
+    }
+
+    // create the menu bar (changed to private)
+    private static JMenuBar createMenuBar() {
+        JMenuBar menuBar = new JMenuBar();
+        JMenu menu = new JMenu("File");
+        menuBar.add(menu);
+        JMenuItem menuItem1 = new JMenuItem(" Save...   ");
+        menuItem1.addActionListener(std);
+        menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+        menu.add(menuItem1);
+        return menuBar;
+    }
+
+
+   /*************************************************************************
+    *  User and screen coordinate systems
+    *************************************************************************/
+
+    /**
+     * Set the x-scale to be the default (between 0.0 and 1.0).
+     */
+    public static void setXscale() { setXscale(DEFAULT_XMIN, DEFAULT_XMAX); }
+
+    /**
+     * Set the y-scale to be the default (between 0.0 and 1.0).
+     */
+    public static void setYscale() { setYscale(DEFAULT_YMIN, DEFAULT_YMAX); }
+
+    /**
+     * Set the x-scale (a 10% border is added to the values)
+     * @param min the minimum value of the x-scale
+     * @param max the maximum value of the x-scale
+     */
+    public static void setXscale(double min, double max) {
+        if (isVisualizer) return;
+        double size = max - min;
+        synchronized (mouseLock) {
+            xmin = min - BORDER * size;
+            xmax = max + BORDER * size;
+        }
+    }
+
+    /**
+     * Set the y-scale (a 10% border is added to the values).
+     * @param min the minimum value of the y-scale
+     * @param max the maximum value of the y-scale
+     */
+    public static void setYscale(double min, double max) {
+        if (isVisualizer) return;
+        double size = max - min;
+        synchronized (mouseLock) {
+            ymin = min - BORDER * size;
+            ymax = max + BORDER * size;
+        }
+    }
+
+    /**
+     * Set the x-scale and y-scale (a 10% border is added to the values)
+     * @param min the minimum value of the x- and y-scales
+     * @param max the maximum value of the x- and y-scales
+     */
+    public static void setScale(double min, double max) {
+        if (isVisualizer) return;
+        double size = max - min;
+        synchronized (mouseLock) {
+            xmin = min - BORDER * size;
+            xmax = max + BORDER * size;
+            ymin = min - BORDER * size;
+            ymax = max + BORDER * size;
+        }
+    }
+
+    // helper functions that scale from user coordinates to screen coordinates and back
+    private static double  scaleX(double x) { return width  * (x - xmin) / (xmax - xmin); }
+    private static double  scaleY(double y) { return height * (ymax - y) / (ymax - ymin); }
+    private static double factorX(double w) { return w * width  / Math.abs(xmax - xmin);  }
+    private static double factorY(double h) { return h * height / Math.abs(ymax - ymin);  }
+    private static double   userX(double x) { return xmin + x * (xmax - xmin) / width;    }
+    private static double   userY(double y) { return ymax - y * (ymax - ymin) / height;   }
+
+
+    /**
+     * Clear the screen to the default color (white).
+     */
+    public static void clear() { clear(DEFAULT_CLEAR_COLOR); }
+    /**
+     * Clear the screen to the given color.
+     * @param color the Color to make the background
+     */
+    public static void clear(Color color) {
+        if (isVisualizer) return;
+        offscreen.setColor(color);
+        offscreen.fillRect(0, 0, width, height);
+        offscreen.setColor(penColor);
+        draw();
+    }
+
+    /**
+     * Get the current pen radius.
+     */
+    public static double getPenRadius() { return penRadius; }
+
+    /**
+     * Set the pen size to the default (.002).
+     */
+    public static void setPenRadius() { setPenRadius(DEFAULT_PEN_RADIUS); }
+    /**
+     * Set the radius of the pen to the given size.
+     * @param r the radius of the pen
+     * @throws IllegalArgumentException if r is negative
+     */
+    public static void setPenRadius(double r) {
+        if (isVisualizer) return;
+        if (r < 0) throw new IllegalArgumentException("pen radius must be nonnegative");
+        penRadius = r;
+        float scaledPenRadius = (float) (r * DEFAULT_SIZE);
+        BasicStroke stroke = new BasicStroke(scaledPenRadius, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND);
+        // BasicStroke stroke = new BasicStroke(scaledPenRadius);
+        offscreen.setStroke(stroke);
+    }
+
+    /**
+     * Get the current pen color.
+     */
+    public static Color getPenColor() { return penColor; }
+
+    /**
+     * Set the pen color to the default color (black).
+     */
+    public static void setPenColor() { setPenColor(DEFAULT_PEN_COLOR); }
+
+    /**
+     * Set the pen color to the given color. The available pen colors are
+     * BLACK, BLUE, CYAN, DARK_GRAY, GRAY, GREEN, LIGHT_GRAY, MAGENTA,
+     * ORANGE, PINK, RED, WHITE, and YELLOW.
+     * @param color the Color to make the pen
+     */
+    public static void setPenColor(Color color) {
+        if (isVisualizer) return;
+        penColor = color;
+        offscreen.setColor(penColor);
+    }
+
+    /**
+     * Set the pen color to the given RGB color.
+     * @param red the amount of red (between 0 and 255)
+     * @param green the amount of green (between 0 and 255)
+     * @param blue the amount of blue (between 0 and 255)
+     * @throws IllegalArgumentException if the amount of red, green, or blue are outside prescribed range
+     */
+    public static void setPenColor(int red, int green, int blue) {
+        if (isVisualizer) return;
+        if (red   < 0 || red   >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (green < 0 || green >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        if (blue  < 0 || blue  >= 256) throw new IllegalArgumentException("amount of red must be between 0 and 255");
+        setPenColor(new Color(red, green, blue));
+    }
+
+    /**
+     * Get the current font.
+     */
+    public static Font getFont() { return font; }
+
+    /**
+     * Set the font to the default font (sans serif, 16 point).
+     */
+    public static void setFont() { setFont(DEFAULT_FONT); }
+
+    /**
+     * Set the font to the given value.
+     * @param f the font to make text
+     */
+    public static void setFont(Font f) { font = f; }
+
+
+   /*************************************************************************
+    *  Drawing geometric shapes.
+    *************************************************************************/
+
+    /**
+     * Draw a line from (x0, y0) to (x1, y1).
+     * @param x0 the x-coordinate of the starting point
+     * @param y0 the y-coordinate of the starting point
+     * @param x1 the x-coordinate of the destination point
+     * @param y1 the y-coordinate of the destination point
+     */
+    public static void line(double x0, double y0, double x1, double y1) {
+        if (isVisualizer) return;
+        offscreen.draw(new Line2D.Double(scaleX(x0), scaleY(y0), scaleX(x1), scaleY(y1)));
+        draw();
+    }
+
+    /**
+     * Draw one pixel at (x, y).
+     * @param x the x-coordinate of the pixel
+     * @param y the y-coordinate of the pixel
+     */
+    private static void pixel(double x, double y) {
+        if (isVisualizer) return;
+        offscreen.fillRect((int) Math.round(scaleX(x)), (int) Math.round(scaleY(y)), 1, 1);
+    }
+
+    /**
+     * Draw a point at (x, y).
+     * @param x the x-coordinate of the point
+     * @param y the y-coordinate of the point
+     */
+    public static void point(double x, double y) {
+        if (isVisualizer) return;
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double r = penRadius;
+        float scaledPenRadius = (float) (r * DEFAULT_SIZE);
+
+        // double ws = factorX(2*r);
+        // double hs = factorY(2*r);
+        // if (ws <= 1 && hs <= 1) pixel(x, y);
+        if (scaledPenRadius <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - scaledPenRadius/2, ys - scaledPenRadius/2,
+                                                 scaledPenRadius, scaledPenRadius));
+        draw();
+    }
+
+    /**
+     * Draw a circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws IllegalArgumentException if the radius of the circle is negative
+     */
+    public static void circle(double x, double y, double r) {
+        if (isVisualizer) return;
+        if (r < 0) throw new IllegalArgumentException("circle radius must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw filled circle of radius r, centered on (x, y).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @throws IllegalArgumentException if the radius of the circle is negative
+     */
+    public static void filledCircle(double x, double y, double r) {
+        if (isVisualizer) return;
+        if (r < 0) throw new IllegalArgumentException("circle radius must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws IllegalArgumentException if either of the axes are negative
+     */
+    public static void ellipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (isVisualizer) return;
+        if (semiMajorAxis < 0) throw new IllegalArgumentException("ellipse semimajor axis must be nonnegative");
+        if (semiMinorAxis < 0) throw new IllegalArgumentException("ellipse semiminor axis must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
+     * @param x the x-coordinate of the center of the ellipse
+     * @param y the y-coordinate of the center of the ellipse
+     * @param semiMajorAxis is the semimajor axis of the ellipse
+     * @param semiMinorAxis is the semiminor axis of the ellipse
+     * @throws IllegalArgumentException if either of the axes are negative
+     */
+    public static void filledEllipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
+        if (isVisualizer) return;
+        if (semiMajorAxis < 0) throw new IllegalArgumentException("ellipse semimajor axis must be nonnegative");
+        if (semiMinorAxis < 0) throw new IllegalArgumentException("ellipse semiminor axis must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*semiMajorAxis);
+        double hs = factorY(2*semiMinorAxis);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Ellipse2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw an arc of radius r, centered on (x, y), from angle1 to angle2 (in degrees).
+     * @param x the x-coordinate of the center of the circle
+     * @param y the y-coordinate of the center of the circle
+     * @param r the radius of the circle
+     * @param angle1 the starting angle. 0 would mean an arc beginning at 3 o'clock.
+     * @param angle2 the angle at the end of the arc. For example, if
+     *        you want a 90 degree arc, then angle2 should be angle1 + 90.
+     * @throws IllegalArgumentException if the radius of the circle is negative
+     */
+    public static void arc(double x, double y, double r, double angle1, double angle2) {
+        if (isVisualizer) return;
+        if (r < 0) throw new IllegalArgumentException("arc radius must be nonnegative");
+        while (angle2 < angle1) angle2 += 360;
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Arc2D.Double(xs - ws/2, ys - hs/2, ws, hs, angle1, angle2 - angle1, Arc2D.OPEN));
+        draw();
+    }
+
+    /**
+     * Draw a square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws IllegalArgumentException if r is negative
+     */
+    public static void square(double x, double y, double r) {
+        if (isVisualizer) return;
+        if (r < 0) throw new IllegalArgumentException("square side length must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled square of side length 2r, centered on (x, y).
+     * @param x the x-coordinate of the center of the square
+     * @param y the y-coordinate of the center of the square
+     * @param r radius is half the length of any side of the square
+     * @throws IllegalArgumentException if r is negative
+     */
+    public static void filledSquare(double x, double y, double r) {
+        if (isVisualizer) return;
+        if (r < 0) throw new IllegalArgumentException("square side length must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*r);
+        double hs = factorY(2*r);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw a rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws IllegalArgumentException if halfWidth or halfHeight is negative
+     */
+    public static void rectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (isVisualizer) return;
+        if (halfWidth  < 0) throw new IllegalArgumentException("half width must be nonnegative");
+        if (halfHeight < 0) throw new IllegalArgumentException("half height must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.draw(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+    /**
+     * Draw a filled rectangle of given half width and half height, centered on (x, y).
+     * @param x the x-coordinate of the center of the rectangle
+     * @param y the y-coordinate of the center of the rectangle
+     * @param halfWidth is half the width of the rectangle
+     * @param halfHeight is half the height of the rectangle
+     * @throws IllegalArgumentException if halfWidth or halfHeight is negative
+     */
+    public static void filledRectangle(double x, double y, double halfWidth, double halfHeight) {
+        if (isVisualizer) return;
+        if (halfWidth  < 0) throw new IllegalArgumentException("half width must be nonnegative");
+        if (halfHeight < 0) throw new IllegalArgumentException("half height must be nonnegative");
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(2*halfWidth);
+        double hs = factorY(2*halfHeight);
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else offscreen.fill(new Rectangle2D.Double(xs - ws/2, ys - hs/2, ws, hs));
+        draw();
+    }
+
+
+    /**
+     * Draw a polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public static void polygon(double[] x, double[] y) {
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.draw(path);
+        draw();
+    }
+
+    /**
+     * Draw a filled polygon with the given (x[i], y[i]) coordinates.
+     * @param x an array of all the x-coordindates of the polygon
+     * @param y an array of all the y-coordindates of the polygon
+     */
+    public static void filledPolygon(double[] x, double[] y) {
+        if (isVisualizer) return;
+        int N = x.length;
+        GeneralPath path = new GeneralPath();
+        path.moveTo((float) scaleX(x[0]), (float) scaleY(y[0]));
+        for (int i = 0; i < N; i++)
+            path.lineTo((float) scaleX(x[i]), (float) scaleY(y[i]));
+        path.closePath();
+        offscreen.fill(path);
+        draw();
+    }
+
+
+
+   /*************************************************************************
+    *  Drawing images.
+    *************************************************************************/
+
+    // get an image from the given filename
+    private static Image getImage(String filename) {
+        if (isVisualizer) return null;
+
+        // to read from file
+        ImageIcon icon = new ImageIcon(filename);
+
+        // try to read from URL
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            try {
+                URL url = new URL(filename);
+                icon = new ImageIcon(url);
+            } catch (Exception e) { /* not a url */ }
+        }
+
+        // in case file is inside a .jar
+        if ((icon == null) || (icon.getImageLoadStatus() != MediaTracker.COMPLETE)) {
+            URL url = StdDraw.class.getResource(filename);
+            if (url == null) throw new IllegalArgumentException("image " + filename + " not found");
+            icon = new ImageIcon(url);
+        }
+
+        return icon.getImage();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y).
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s) {
+        if (isVisualizer) return;
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y),
+     * rotated given number of degrees
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s, double degrees) {
+        if (isVisualizer) return;
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = image.getWidth(null);
+        int hs = image.getHeight(null);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0), (int) Math.round(ys - hs/2.0), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rescaled to w-by-h.
+     * @param x the center x coordinate of the image
+     * @param y the center y coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @throws IllegalArgumentException if the width height are negative
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s, double w, double h) {
+        if (isVisualizer) return;
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        if (w < 0) throw new IllegalArgumentException("width is negative: " + w);
+        if (h < 0) throw new IllegalArgumentException("height is negative: " + h);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+        else {
+            offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                       (int) Math.round(ys - hs/2.0),
+                                       (int) Math.round(ws),
+                                       (int) Math.round(hs), null);
+        }
+        draw();
+    }
+
+
+    /**
+     * Draw picture (gif, jpg, or png) centered on (x, y), rotated
+     * given number of degrees, rescaled to w-by-h.
+     * @param x the center x-coordinate of the image
+     * @param y the center y-coordinate of the image
+     * @param s the name of the image/picture, e.g., "ball.gif"
+     * @param w the width of the image
+     * @param h the height of the image
+     * @param degrees is the number of degrees to rotate counterclockwise
+     * @throws IllegalArgumentException if the image is corrupt
+     */
+    public static void picture(double x, double y, String s, double w, double h, double degrees) {
+        if (isVisualizer) return;
+        Image image = getImage(s);
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        double ws = factorX(w);
+        double hs = factorY(h);
+        if (ws < 0 || hs < 0) throw new IllegalArgumentException("image " + s + " is corrupt");
+        if (ws <= 1 && hs <= 1) pixel(x, y);
+
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        offscreen.drawImage(image, (int) Math.round(xs - ws/2.0),
+                                   (int) Math.round(ys - hs/2.0),
+                                   (int) Math.round(ws),
+                                   (int) Math.round(hs), null);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+
+        draw();
+    }
+
+
+   /*************************************************************************
+    *  Drawing text.
+    *************************************************************************/
+
+    /**
+     * Write the given text string in the current font, centered on (x, y).
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     */
+    public static void text(double x, double y, String s) {
+        if (isVisualizer) return;
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs - ws/2.0), (float) (ys + hs));
+        draw();
+    }
+
+    /**
+     * Write the given text string in the current font, centered on (x, y) and
+     * rotated by the specified number of degrees  
+     * @param x the center x-coordinate of the text
+     * @param y the center y-coordinate of the text
+     * @param s the text
+     * @param degrees is the number of degrees to rotate counterclockwise
+     */
+    public static void text(double x, double y, String s, double degrees) {
+        if (isVisualizer) return;
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        offscreen.rotate(Math.toRadians(-degrees), xs, ys);
+        text(x, y, s);
+        offscreen.rotate(Math.toRadians(+degrees), xs, ys);
+    }
+
+
+    /**
+     * Write the given text string in the current font, left-aligned at (x, y).
+     * @param x the x-coordinate of the text
+     * @param y the y-coordinate of the text
+     * @param s the text
+     */
+    public static void textLeft(double x, double y, String s) {
+        if (isVisualizer) return;
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs), (float) (ys + hs));
+        draw();
+    }
+
+    /**
+     * Write the given text string in the current font, right-aligned at (x, y).
+     * @param x the x-coordinate of the text
+     * @param y the y-coordinate of the text
+     * @param s the text
+     */
+    public static void textRight(double x, double y, String s) {
+        if (isVisualizer) return;
+        offscreen.setFont(font);
+        FontMetrics metrics = offscreen.getFontMetrics();
+        double xs = scaleX(x);
+        double ys = scaleY(y);
+        int ws = metrics.stringWidth(s);
+        int hs = metrics.getDescent();
+        offscreen.drawString(s, (float) (xs - ws), (float) (ys + hs));
+        draw();
+    }
+
+
+
+    /**
+     * Display on screen, pause for t milliseconds, and turn on
+     * <em>animation mode</em>: subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will not be displayed on screen until the next call to <tt>show()</tt>.
+     * This is useful for producing animations (clear the screen, draw a bunch of shapes,
+     * display on screen for a fixed amount of time, and repeat). It also speeds up
+     * drawing a huge number of shapes (call <tt>show(0)</tt> to defer drawing
+     * on screen, draw the shapes, and call <tt>show(0)</tt> to display them all
+     * on screen at once).
+     * @param t number of milliseconds
+     */
+    public static void show(int t) {
+        if (isVisualizer) return;
+        defer = false;
+        draw();
+        try { Thread.sleep(t); }
+        catch (InterruptedException e) { System.out.println("Error sleeping"); }
+        defer = true;
+    }
+
+    /**
+     * Display on-screen and turn off animation mode:
+     * subsequent calls to
+     * drawing methods such as <tt>line()</tt>, <tt>circle()</tt>, and <tt>square()</tt>
+     * will be displayed on screen when called. This is the default.
+     */
+    public static void show() {
+        if (isVisualizer) return;
+        defer = false;
+        draw();
+    }
+
+    // draw onscreen if defer is false
+    private static void draw() {
+        if (isVisualizer) return;
+        if (defer) return;
+        onscreen.drawImage(offscreenImage, 0, 0, null);
+        frame.repaint();
+    }
+
+
+   /*************************************************************************
+    *  Save drawing to a file.
+    *************************************************************************/
+
+    /**
+     * Save onscreen image to file - suffix must be png, jpg, or gif.
+     * @param filename the name of the file with one of the required suffixes
+     */
+    public static void save(String filename) {
+        if (isVisualizer) return;
+        File file = new File(filename);
+        String suffix = filename.substring(filename.lastIndexOf('.') + 1);
+
+        // png files
+        if (suffix.toLowerCase().equals("png")) {
+            try { ImageIO.write(onscreenImage, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        // need to change from ARGB to RGB for jpeg
+        // reference: http://archives.java.sun.com/cgi-bin/wa?A2=ind0404&L=java2d-interest&D=0&P=2727
+        else if (suffix.toLowerCase().equals("jpg")) {
+            WritableRaster raster = onscreenImage.getRaster();
+            WritableRaster newRaster;
+            newRaster = raster.createWritableChild(0, 0, width, height, 0, 0, new int[] {0, 1, 2});
+            DirectColorModel cm = (DirectColorModel) onscreenImage.getColorModel();
+            DirectColorModel newCM = new DirectColorModel(cm.getPixelSize(),
+                                                          cm.getRedMask(),
+                                                          cm.getGreenMask(),
+                                                          cm.getBlueMask());
+            BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false,  null);
+            try { ImageIO.write(rgbBuffer, suffix, file); }
+            catch (IOException e) { e.printStackTrace(); }
+        }
+
+        else {
+            System.out.println("Invalid image file type: " + suffix);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void actionPerformed(ActionEvent e) {
+        if (isVisualizer) return;
+        FileDialog chooser = new FileDialog(StdDraw.frame, "Use a .png or .jpg extension", FileDialog.SAVE);
+        chooser.setVisible(true);
+        String filename = chooser.getFile();
+        if (filename != null) {
+            StdDraw.save(chooser.getDirectory() + File.separator + chooser.getFile());
+        }
+    }
+
+
+   /*************************************************************************
+    *  Mouse interactions.
+    *************************************************************************/
+
+    /**
+     * Is the mouse being pressed?
+     * @return true or false
+     */
+    public static boolean mousePressed() {
+        synchronized (mouseLock) {
+            return mousePressed;
+        }
+    }
+
+    /**
+     * What is the x-coordinate of the mouse?
+     * @return the value of the x-coordinate of the mouse
+     */
+    public static double mouseX() {
+        synchronized (mouseLock) {
+            return mouseX;
+        }
+    }
+
+    /**
+     * What is the y-coordinate of the mouse?
+     * @return the value of the y-coordinate of the mouse
+     */
+    public static double mouseY() {
+        synchronized (mouseLock) {
+            return mouseY;
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseClicked(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseEntered(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseExited(MouseEvent e) { }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mousePressed(MouseEvent e) {
+        if (isVisualizer) return;
+        synchronized (mouseLock) {
+            mouseX = StdDraw.userX(e.getX());
+            mouseY = StdDraw.userY(e.getY());
+            mousePressed = true;
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseReleased(MouseEvent e) {
+        synchronized (mouseLock) {
+            mousePressed = false;
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseDragged(MouseEvent e)  {
+        if (isVisualizer) return;
+        synchronized (mouseLock) {
+            mouseX = StdDraw.userX(e.getX());
+            mouseY = StdDraw.userY(e.getY());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void mouseMoved(MouseEvent e) {
+        if (isVisualizer) return;
+        synchronized (mouseLock) {
+            mouseX = StdDraw.userX(e.getX());
+            mouseY = StdDraw.userY(e.getY());
+        }
+    }
+
+
+   /*************************************************************************
+    *  Keyboard interactions.
+    *************************************************************************/
+
+    /**
+     * Has the user typed a key?
+     * @return true if the user has typed a key, false otherwise
+     */
+    public static boolean hasNextKeyTyped() {
+        synchronized (keyLock) {
+            return !keysTyped.isEmpty();
+        }
+    }
+
+    /**
+     * What is the next key that was typed by the user? This method returns
+     * a Unicode character corresponding to the key typed (such as 'a' or 'A').
+     * It cannot identify action keys (such as F1
+     * and arrow keys) or modifier keys (such as control).
+     * @return the next Unicode key typed
+     */
+    public static char nextKeyTyped() {
+        synchronized (keyLock) {
+            return keysTyped.removeLast();
+        }
+    }
+
+    /**
+     * Is the keycode currently being pressed? This method takes as an argument
+     * the keycode (corresponding to a physical key). It can handle action keys
+     * (such as F1 and arrow keys) and modifier keys (such as shift and control).
+     * See <a href = "http://download.oracle.com/javase/6/docs/api/java/awt/event/KeyEvent.html">KeyEvent.java</a>
+     * for a description of key codes.
+     * @return true if keycode is currently being pressed, false otherwise
+     */
+    public static boolean isKeyPressed(int keycode) {
+        synchronized (keyLock) {
+            return keysDown.contains(keycode);
+        }
+    }
+
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyTyped(KeyEvent e) {
+        synchronized (keyLock) {
+            keysTyped.addFirst(e.getKeyChar());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyPressed(KeyEvent e) {
+        synchronized (keyLock) {
+            keysDown.add(e.getKeyCode());
+        }
+    }
+
+    /**
+     * This method cannot be called directly.
+     */
+    public void keyReleased(KeyEvent e) {
+        synchronized (keyLock) {
+            keysDown.remove(e.getKeyCode());
+        }
+    }
+
+
+
+
+    /**
+     * Test client.
+     */
+    public static void main(String[] args) {
+        StdDraw.square(.2, .8, .1);
+        StdDraw.filledSquare(.8, .8, .2);
+        StdDraw.circle(.8, .2, .2);
+
+        StdDraw.setPenColor(StdDraw.BOOK_RED);
+        StdDraw.setPenRadius(.02);
+        StdDraw.arc(.8, .2, .1, 200, 45);
+
+        // draw a blue diamond
+        StdDraw.setPenRadius();
+        StdDraw.setPenColor(StdDraw.BOOK_BLUE);
+        double[] x = { .1, .2, .3, .2 };
+        double[] y = { .2, .3, .2, .1 };
+        StdDraw.filledPolygon(x, y);
+
+        // text
+        StdDraw.setPenColor(StdDraw.BLACK);
+        StdDraw.text(0.2, 0.5, "black text");
+        StdDraw.setPenColor(StdDraw.WHITE);
+        StdDraw.text(0.8, 0.8, "white text");
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdIn.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdIn.java
new file mode 100644
index 000000000..5051221ad
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdIn.java
@@ -0,0 +1,337 @@
+/*************************************************************************
+ *  Compilation:  javac StdIn.java
+ *  Execution:    java StdIn   (interactive test of basic functionality)
+ *
+ *  Reads in data of various types from standard input.
+ *
+ *************************************************************************/
+
+import java.util.Scanner;
+import java.util.NoSuchElementException;
+import java.util.regex.Pattern;
+
+/**
+ *  <i>Standard input</i>. This class provides methods for reading strings
+ *  and numbers from standard input. See 
+ *  <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *  <p>
+ *  See the technical information in the documentation of the {@link In}
+ *  class, which applies to this class as well. 
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdIn {
+
+    // it doesn't make sense to instantiate this class
+    private StdIn() {}
+
+    private static Scanner scanner;
+ 
+    /*** begin: section (1 of 2) of code duplicated from In to StdIn */
+    
+    // assume Unicode UTF-8 encoding
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with System.out.
+    private static final java.util.Locale usLocale = 
+        new java.util.Locale("en", "US");
+
+    // the default token separator; we maintain the invariant that this value 
+    // is held by the scanner's delimiter between calls
+    private static final Pattern WHITESPACE_PATTERN
+        = Pattern.compile("\\p{javaWhitespace}+");
+
+    // makes whitespace characters significant 
+    private static final Pattern EMPTY_PATTERN
+        = Pattern.compile("");
+
+    // used to read the entire input. source:
+    // http://weblogs.java.net/blog/pat/archive/2004/10/stupid_scanner_1.html
+    private static final Pattern EVERYTHING_PATTERN
+        = Pattern.compile("\\A");
+
+    /*** end: section (1 of 2) of code duplicated from In to StdIn */
+
+    /*** begin: section (2 of 2) of code duplicated from In to StdIn,
+      *  with all methods changed from "public" to "public static" ***/
+
+    /** How many characters have been read so far?
+     */
+    public static void savePosition() {
+        try {
+            position = scanner.match().end();
+        }
+        catch (IllegalStateException e) {
+            position = 0; // nothing has been read yet
+        }
+    }
+
+    public static int position = 0;
+
+   /**
+     * Is the input empty (except possibly for whitespace)? Use this
+     * to know whether the next call to {@link #readString()}, 
+     * {@link #readDouble()}, etc will succeed.
+     */
+    public static boolean isEmpty() {
+        return !scanner.hasNext();
+    }
+
+   /**
+     * Does the input have a next line? Use this to know whether the
+     * next call to {@link #readLine()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextChar()}.
+     */
+    public static boolean hasNextLine() {
+        return scanner.hasNextLine();
+    }
+
+    /**
+     * Is the input empty (including whitespace)? Use this to know 
+     * whether the next call to {@link #readChar()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextLine()}.
+     */
+    public static boolean hasNextChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        boolean result = scanner.hasNext();
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return result;
+    }
+
+
+   /**
+     * Read and return the next line.
+     */
+    public static String readLine() {
+        String line;
+        try                 { line = scanner.nextLine(); savePosition(); }
+        catch (Exception e) { line = null;               }
+        return line;
+    }
+
+    /**
+     * Read and return the next character.
+     */
+    public static char readChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        String ch = scanner.next();
+        assert (ch.length() == 1) : "Internal (Std)In.readChar() error!"
+            + " Please contact the authors.";
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        char result = ch.charAt(0);
+        savePosition();
+        return result;
+    }  
+
+
+   /**
+     * Read and return the remainder of the input as a string.
+     */
+    public static String readAll() {
+        if (!scanner.hasNextLine())
+            return "";
+
+        String result = scanner.useDelimiter(EVERYTHING_PATTERN).next();
+        // not that important to reset delimeter, since now scanner is empty
+        scanner.useDelimiter(WHITESPACE_PATTERN); // but let's do it anyway
+        savePosition();
+        return result;
+    }
+
+
+   /**
+     * Read and return the next string.
+     */
+    public static String readString() {
+        String result = scanner.next();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next int.
+     */
+    public static int readInt() {
+        int result = 0;
+        result = scanner.nextInt();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next double.
+     */
+    public static double readDouble() {
+        double result = scanner.nextDouble();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next float.
+     */
+    public static float readFloat() {
+        float result = scanner.nextFloat();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next long.
+     */
+    public static long readLong() {
+        long result = scanner.nextLong();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next short.
+     */
+    public static short readShort() {
+        short result = scanner.nextShort();
+        savePosition();
+        return result;
+    }
+
+   /**
+     * Read and return the next byte.
+     */
+    public static byte readByte() {
+        byte result = scanner.nextByte();
+        savePosition();
+        return result;
+    }
+
+    /**
+     * Read and return the next boolean, allowing case-insensitive
+     * "true" or "1" for true, and "false" or "0" for false.
+     */
+    public static boolean readBoolean() {
+        String s = readString();
+        savePosition();
+        if (s.equalsIgnoreCase("true"))  return true;
+        if (s.equalsIgnoreCase("false")) return false;
+        if (s.equals("1"))               return true;
+        if (s.equals("0"))               return false;
+        throw new java.util.InputMismatchException();
+    }
+
+    /**
+     * Read all strings until the end of input is reached, and return them.
+     */
+    public static String[] readAllStrings() {
+        // we could use readAll.trim().split(), but that's not consistent
+        // since trim() uses characters 0x00..0x20 as whitespace
+        String[] tokens = WHITESPACE_PATTERN.split(readAll());
+        if (tokens.length == 0 || tokens[0].length() > 0)
+            return tokens;
+        String[] decapitokens = new String[tokens.length-1];
+        for (int i=0; i < tokens.length-1; i++)
+            decapitokens[i] = tokens[i+1];
+        savePosition();
+        return decapitokens;
+    }
+
+    /**
+     * Read all ints until the end of input is reached, and return them.
+     */
+    public static int[] readAllInts() {
+        String[] fields = readAllStrings();
+        int[] vals = new int[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Integer.parseInt(fields[i]);
+        savePosition();
+        return vals;
+    }
+
+    /**
+     * Read all doubles until the end of input is reached, and return them.
+     */
+    public static double[] readAllDoubles() {
+        String[] fields = readAllStrings();
+        double[] vals = new double[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Double.parseDouble(fields[i]);
+        savePosition();
+        return vals;
+    }
+    
+    /*** end: section (2 of 2) of code duplicated from In to StdIn */
+    
+    
+    /**
+     * If StdIn changes, use this to reinitialize the scanner.
+     */
+    private static void resync() {
+        setScanner(new Scanner(new java.io.BufferedInputStream(System.in), 
+                               charsetName));
+    }
+    
+    private static void setScanner(Scanner scanner) {
+        StdIn.scanner = scanner;
+        StdIn.scanner.useLocale(usLocale);
+        savePosition();
+    }
+
+    // do this once when StdIn is initialized
+    static {
+        resync();
+    }
+
+   /**
+     * Reads all ints from stdin.
+     * @deprecated For more consistency, use {@link #readAllInts()}
+     */
+    public static int[] readInts() {
+        return readAllInts();
+    }
+
+   /**
+     * Reads all doubles from stdin.
+     * @deprecated For more consistency, use {@link #readAllDoubles()}
+     */
+    public static double[] readDoubles() {
+        return readAllDoubles();
+    }
+
+   /**
+     * Reads all Strings from stdin.
+     * @deprecated For more consistency, use {@link #readAllStrings()}
+     */
+    public static String[] readStrings() {
+        return readAllStrings();
+    }
+
+
+    /**
+     * Interactive test of basic functionality.
+     */
+    public static void main(String[] args) {
+
+        System.out.println("Type a string: ");
+        String s = StdIn.readString();
+        System.out.println("Your string was: " + s);
+        System.out.println();
+
+        System.out.println("Type an int: ");
+        int a = StdIn.readInt();
+        System.out.println("Your int was: " + a);
+        System.out.println();
+
+        System.out.println("Type a boolean: ");
+        boolean b = StdIn.readBoolean();
+        System.out.println("Your boolean was: " + b);
+        System.out.println();
+
+        System.out.println("Type a double: ");
+        double c = StdIn.readDouble();
+        System.out.println("Your double was: " + c);
+        System.out.println();
+
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdIn.java-orig b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdIn.java-orig
new file mode 100644
index 000000000..5290785eb
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdIn.java-orig
@@ -0,0 +1,300 @@
+/*************************************************************************
+ *  Compilation:  javac StdIn.java
+ *  Execution:    java StdIn   (interactive test of basic functionality)
+ *
+ *  Reads in data of various types from standard input.
+ *
+ *************************************************************************/
+
+import java.util.Scanner;
+import java.util.regex.Pattern;
+
+/**
+ *  <i>Standard input</i>. This class provides methods for reading strings
+ *  and numbers from standard input. See 
+ *  <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *  <p>
+ *  See the technical information in the documentation of the {@link In}
+ *  class, which applies to this class as well. 
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdIn {
+
+    // it doesn't make sense to instantiate this class
+    private StdIn() {}
+
+    private static Scanner scanner;
+ 
+    /*** begin: section (1 of 2) of code duplicated from In to StdIn */
+    
+    // assume Unicode UTF-8 encoding
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with System.out.
+    private static final java.util.Locale usLocale = 
+        new java.util.Locale("en", "US");
+
+    // the default token separator; we maintain the invariant that this value 
+    // is held by the scanner's delimiter between calls
+    private static final Pattern WHITESPACE_PATTERN
+        = Pattern.compile("\\p{javaWhitespace}+");
+
+    // makes whitespace characters significant 
+    private static final Pattern EMPTY_PATTERN
+        = Pattern.compile("");
+
+    // used to read the entire input. source:
+    // http://weblogs.java.net/blog/pat/archive/2004/10/stupid_scanner_1.html
+    private static final Pattern EVERYTHING_PATTERN
+        = Pattern.compile("\\A");
+
+    /*** end: section (1 of 2) of code duplicated from In to StdIn */
+
+    /*** begin: section (2 of 2) of code duplicated from In to StdIn,
+      *  with all methods changed from "public" to "public static" ***/
+
+   /**
+     * Is the input empty (except possibly for whitespace)? Use this
+     * to know whether the next call to {@link #readString()}, 
+     * {@link #readDouble()}, etc will succeed.
+     */
+    public static boolean isEmpty() {
+        return !scanner.hasNext();
+    }
+
+   /**
+     * Does the input have a next line? Use this to know whether the
+     * next call to {@link #readLine()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextChar()}.
+     */
+    public static boolean hasNextLine() {
+        return scanner.hasNextLine();
+    }
+
+    /**
+     * Is the input empty (including whitespace)? Use this to know 
+     * whether the next call to {@link #readChar()} will succeed. <p> Functionally
+     * equivalent to {@link #hasNextLine()}.
+     */
+    public static boolean hasNextChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        boolean result = scanner.hasNext();
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return result;
+    }
+
+
+   /**
+     * Read and return the next line.
+     */
+    public static String readLine() {
+        String line;
+        try                 { line = scanner.nextLine(); }
+        catch (Exception e) { line = null;               }
+        return line;
+    }
+
+    /**
+     * Read and return the next character.
+     */
+    public static char readChar() {
+        scanner.useDelimiter(EMPTY_PATTERN);
+        String ch = scanner.next();
+        assert (ch.length() == 1) : "Internal (Std)In.readChar() error!"
+            + " Please contact the authors.";
+        scanner.useDelimiter(WHITESPACE_PATTERN);
+        return ch.charAt(0);
+    }  
+
+
+   /**
+     * Read and return the remainder of the input as a string.
+     */
+    public static String readAll() {
+        if (!scanner.hasNextLine())
+            return "";
+
+        String result = scanner.useDelimiter(EVERYTHING_PATTERN).next();
+        // not that important to reset delimeter, since now scanner is empty
+        scanner.useDelimiter(WHITESPACE_PATTERN); // but let's do it anyway
+        return result;
+    }
+
+
+   /**
+     * Read and return the next string.
+     */
+    public static String readString() {
+        return scanner.next();
+    }
+
+   /**
+     * Read and return the next int.
+     */
+    public static int readInt() {
+        return scanner.nextInt();
+    }
+
+   /**
+     * Read and return the next double.
+     */
+    public static double readDouble() {
+        return scanner.nextDouble();
+    }
+
+   /**
+     * Read and return the next float.
+     */
+    public static float readFloat() {
+        return scanner.nextFloat();
+    }
+
+   /**
+     * Read and return the next long.
+     */
+    public static long readLong() {
+        return scanner.nextLong();
+    }
+
+   /**
+     * Read and return the next short.
+     */
+    public static short readShort() {
+        return scanner.nextShort();
+    }
+
+   /**
+     * Read and return the next byte.
+     */
+    public static byte readByte() {
+        return scanner.nextByte();
+    }
+
+    /**
+     * Read and return the next boolean, allowing case-insensitive
+     * "true" or "1" for true, and "false" or "0" for false.
+     */
+    public static boolean readBoolean() {
+        String s = readString();
+        if (s.equalsIgnoreCase("true"))  return true;
+        if (s.equalsIgnoreCase("false")) return false;
+        if (s.equals("1"))               return true;
+        if (s.equals("0"))               return false;
+        throw new java.util.InputMismatchException();
+    }
+
+    /**
+     * Read all strings until the end of input is reached, and return them.
+     */
+    public static String[] readAllStrings() {
+        // we could use readAll.trim().split(), but that's not consistent
+        // since trim() uses characters 0x00..0x20 as whitespace
+        String[] tokens = WHITESPACE_PATTERN.split(readAll());
+        if (tokens.length == 0 || tokens[0].length() > 0)
+            return tokens;
+        String[] decapitokens = new String[tokens.length-1];
+        for (int i=0; i < tokens.length-1; i++)
+            decapitokens[i] = tokens[i+1];
+        return decapitokens;
+    }
+
+    /**
+     * Read all ints until the end of input is reached, and return them.
+     */
+    public static int[] readAllInts() {
+        String[] fields = readAllStrings();
+        int[] vals = new int[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Integer.parseInt(fields[i]);
+        return vals;
+    }
+
+    /**
+     * Read all doubles until the end of input is reached, and return them.
+     */
+    public static double[] readAllDoubles() {
+        String[] fields = readAllStrings();
+        double[] vals = new double[fields.length];
+        for (int i = 0; i < fields.length; i++)
+            vals[i] = Double.parseDouble(fields[i]);
+        return vals;
+    }
+    
+    /*** end: section (2 of 2) of code duplicated from In to StdIn */
+    
+    
+    /**
+     * If StdIn changes, use this to reinitialize the scanner.
+     */
+    private static void resync() {
+        setScanner(new Scanner(new java.io.BufferedInputStream(System.in), 
+                               charsetName));
+    }
+    
+    private static void setScanner(Scanner scanner) {
+        StdIn.scanner = scanner;
+        StdIn.scanner.useLocale(usLocale);
+    }
+
+    // do this once when StdIn is initialized
+    static {
+        resync();
+    }
+
+   /**
+     * Reads all ints from stdin.
+     * @deprecated For more consistency, use {@link #readAllInts()}
+     */
+    public static int[] readInts() {
+        return readAllInts();
+    }
+
+   /**
+     * Reads all doubles from stdin.
+     * @deprecated For more consistency, use {@link #readAllDoubles()}
+     */
+    public static double[] readDoubles() {
+        return readAllDoubles();
+    }
+
+   /**
+     * Reads all Strings from stdin.
+     * @deprecated For more consistency, use {@link #readAllStrings()}
+     */
+    public static String[] readStrings() {
+        return readAllStrings();
+    }
+
+
+    /**
+     * Interactive test of basic functionality.
+     */
+    public static void main(String[] args) {
+
+        System.out.println("Type a string: ");
+        String s = StdIn.readString();
+        System.out.println("Your string was: " + s);
+        System.out.println();
+
+        System.out.println("Type an int: ");
+        int a = StdIn.readInt();
+        System.out.println("Your int was: " + a);
+        System.out.println();
+
+        System.out.println("Type a boolean: ");
+        boolean b = StdIn.readBoolean();
+        System.out.println("Your boolean was: " + b);
+        System.out.println();
+
+        System.out.println("Type a double: ");
+        double c = StdIn.readDouble();
+        System.out.println("Your double was: " + c);
+        System.out.println();
+
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdInTest.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdInTest.java
new file mode 100644
index 000000000..aaae452de
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdInTest.java
@@ -0,0 +1,340 @@
+/**
+ * Test client for StdIn and In. 
+ **/
+
+import java.util.Scanner;
+import java.util.Arrays;
+import java.lang.reflect.Array;
+import java.lang.reflect.Method;
+import java.io.ByteArrayInputStream;
+import java.net.URL;
+import java.net.URLClassLoader;
+
+public class StdInTest {
+    
+    // make a printable/readable version of an object
+    public static Object escape(Object original) {
+        if (original instanceof Character) {
+            char u = (char) ((Character)original);
+            int idx = "\b\t\n\f\r\"\'\\".indexOf(u);
+            if (idx >= 0)
+                return "\\"+"btnfr\"\'\\".charAt(idx);
+            if (u < 32) 
+                return "\\"+Integer.toOctalString(u);
+            if (u > 126) 
+                return "\\u"+String.format("%04X", (int)u);
+            return original;
+        }
+        else if (original instanceof String) {
+            StringBuilder result = new StringBuilder();
+            for (char c : ((String)original).toCharArray())
+                result.append(escape(c));
+            return "\"" + result.toString() + "\"";
+        }
+        else if (original.getClass().isArray()) {
+            StringBuilder result = new StringBuilder("[");
+            int len = Array.getLength(original);
+            for (int i=0; i<len; i++)
+                result.append(" ").append(escape(Array.get(original, i)));
+            return result.append("]").toString();
+        }
+        return original;
+    }
+    
+    public static boolean testStdIn;
+    
+    public static Method resyncMethod;
+    
+    public static boolean canResync() {
+        try {
+            resyncMethod = StdIn.class.getMethod("resync");
+        }
+        catch (NoSuchMethodException e) {
+            return false;
+        }
+        return true;
+    }
+    
+    public static int testCount = 0;
+
+    /**
+     * In the two methods below, each Object[] of "steps" is a length-2
+     * array: the first is a String holding a method name, the second
+     * is the expected return value when that method is called in sequence.
+     */
+    public static void test(String input, Object[][] steps) {
+        test(input, steps, false); // create Scanner from String
+        if (testStdIn)
+            test(input, steps, true);  // uses stdIn/System.setIn
+        testCount++;
+    }
+    
+    public static void test(String input, Object[][] steps, boolean useStdIn) {
+        In in = null;
+        if (useStdIn) {
+            try {
+                System.setIn(new ByteArrayInputStream(input.getBytes("UTF-8")));
+            }
+            catch (java.io.UnsupportedEncodingException e) {
+                throw new RuntimeException(e.toString());
+            }
+
+            // in order for this to work, you need to change resync to public
+            
+            try { //call StdIn.resync();
+                resyncMethod.invoke(null);
+            }
+            catch (IllegalAccessException e) {
+                throw new RuntimeException(e.toString());
+            }
+            catch (java.lang.reflect.InvocationTargetException e) {
+                throw new RuntimeException(e.toString());                   
+            }
+        }
+        else 
+            in = new In(new Scanner(input));
+
+        int count = 0;
+        for (Object[] step : steps) {
+            String cmd = (String)step[0];
+            Object expected = step[1];
+            Object result;
+            
+            String preamble = "Failed input %s\nStep %d (%s)\n";
+
+            try {
+                Method method;
+                // nice and easy since these methods take no arguments
+                if (useStdIn)
+                    method = StdIn.class.getMethod(cmd);
+                else
+                    method = in.getClass().getMethod(cmd);
+                result = method.invoke(in); // fine to be null for static
+            }
+            catch (NoSuchMethodException e) {
+                java.io.StringWriter errors = new java.io.StringWriter();
+                e.printStackTrace(new java.io.PrintWriter(errors));
+                throw new RuntimeException(String.format(preamble, 
+                                                         input, count, cmd) +
+                                           errors.toString());
+            }
+            catch (IllegalAccessException e) {
+                java.io.StringWriter errors = new java.io.StringWriter();
+                e.printStackTrace(new java.io.PrintWriter(errors));
+                throw new RuntimeException(String.format(preamble, 
+                                                         input, count, cmd) +
+                                           errors.toString());
+            }
+            catch (java.lang.reflect.InvocationTargetException e) {
+                java.io.StringWriter errors = new java.io.StringWriter();
+                e.printStackTrace(new java.io.PrintWriter(errors));
+                e.getCause().printStackTrace(new java.io.PrintWriter(errors));
+                throw new RuntimeException(String.format(preamble, 
+                                                         input, count, cmd) +
+                                           errors.toString());
+            }
+                        
+            if (expected.getClass().isArray()) {
+                if (!(result.getClass().isArray())) {
+                    StdOut.printf(preamble + "Expected array, got %s\n",
+                                  input, count, cmd, result);
+                    continue;
+                }
+                Object r = result, e = expected; // to shorten lines below
+                int rl = Array.getLength(r);
+                int el = Array.getLength(e);
+                if (el != rl)
+                    StdOut.printf(preamble + "Expected %d, got %d items:\n%s\n",
+                                  escape(input), count, cmd, el, rl, escape(r));
+                else for (int i=0; i<rl; i++) 
+                    if (!(Array.get(r, i).equals(Array.get(e, i)))) 
+                    StdOut.printf(preamble + "\nExpected [%d]=%s, got %s\n",
+                                  escape(input), count, cmd, i, 
+                                  escape(Array.get(e, i)), 
+                                  escape(Array.get(r, i)));
+            }
+            else if (!result.equals(expected)) {
+                StdOut.printf(preamble + "Expected %s, got %s\n",
+                              escape(input), count, cmd, escape(expected), 
+                              escape(result));
+            }
+            count++;
+        }
+    }
+    
+    public static void main(String[] args) {
+        testStdIn = canResync();
+        
+        if (testStdIn) 
+            StdOut.println("Note: any errors appear duplicated since tests run 2x.");
+        else 
+            StdOut.println("Note: StdIn.resync is private, only In will be tested.");
+
+        test("this is a test", 
+             new Object[][]{
+            {"isEmpty", false}, {"hasNextChar", true}, {"hasNextLine", true},
+            {"readAllStrings", new String[]{"this", "is", "a", "test"}},
+            {"isEmpty", true}, {"hasNextChar", false}, {"hasNextLine", false}
+        });
+        test("\n\n\n", 
+             new Object[][]{
+            {"isEmpty", true}, {"hasNextChar", true}, {"hasNextLine", true},
+            {"readAll", "\n\n\n"}
+        });
+        test("", 
+             new Object[][]{
+            {"isEmpty", true}, {"hasNextChar", false}, {"hasNextLine", false}
+        });
+        test("\t\t  \t\t", 
+             new Object[][]{
+            {"isEmpty", true}, {"hasNextChar", true}, {"hasNextLine", true},
+            {"readAll", "\t\t  \t\t"}
+        });
+        test("readLine consumes newline\nyeah!", 
+             new Object[][]{
+            {"readLine", "readLine consumes newline"}, {"readChar", 'y'}
+        });
+        test("readString doesn't consume spaces", 
+             new Object[][]{
+            {"readString", "readString"}, {"readChar", ' '}
+        });
+        test("\n\nblank lines test",
+             new Object[][]{
+            {"readLine", ""}, {"readLine", ""}, {"hasNextLine", true},
+            {"readLine", "blank lines test"}, {"hasNextLine", false}
+        });
+        test("   \n  \t \n  correct  \n\t\n\t .trim replacement \n\t",
+             new Object[][]{
+            {"readAllStrings", new String[]{"correct", ".trim", "replacement"}},
+            {"hasNextChar", false}
+        });
+        StringBuilder sb = new StringBuilder();
+        Object[][] expected = new Object[2000][2];
+        for (int i=0; i<1000; i++) {
+            sb.append((char)i);
+            sb.append((char)(i+8000)); // include weird non-breaking spaces
+            expected[2*i][0] = "readChar";
+            expected[2*i+1][0] = "readChar";
+            expected[2*i][1] = (char)i;
+            expected[2*i+1][1] = (char)(i+8000);
+        }
+        test(sb.toString(), expected);
+        test(" this \n and \that \n ",
+             new Object[][]{
+            {"readString", "this"}, {"readString", "and"}, {"readChar", ' '},
+            {"readString", "hat"}, {"readChar", ' '}, {"isEmpty", true},
+            {"hasNextLine", true}, {"readLine", ""}, {"readLine", " "}
+        });
+        test(" 1 2 3 \n\t 4 5 ",
+             new Object[][]{
+            {"readAllInts", new int[]{1, 2, 3, 4, 5}}
+        });
+        test(" 0 1 False true falsE True ",
+             new Object[][]{
+            {"readBoolean", false}, {"readBoolean", true}, 
+            {"readBoolean", false}, {"readBoolean", true}, 
+            {"readBoolean", false}, {"readBoolean", true}
+        });
+        test(" \240\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008"
+                 + "\u2009\u200A\u205F\u3000",
+             new Object[][]{
+            {"readString", "\240"},   // non-breaking space - not java whitespace
+            {"readString", "\u2007"}, // similarly
+            {"hasNextChar", true}, // there is some stuff left over
+            {"isEmpty", true},        // but it is all whitespace
+            {"readChar", '\u2008'}    // such as this one
+        });
+        
+        // line sep, par sep, NEL, unit sep, vtab --- first 3 are newlines
+        // NB: \205 is treated as a line separator, but not whitespace!
+        test("a\u2028b\u2029c\37d\13e\205f", 
+             new Object[][]{
+            {"readAllStrings", new String[]{"a", "b", "c", "d", "e\205f"}}
+        });
+        test("a\u2028b\u2029c\37d\13e\205f", 
+             new Object[][]{
+            {"readLine", "a"},
+            {"readLine", "b"},
+            {"readLine", "c\37d\13e"},
+            {"readLine", "f"}
+        });
+        test("\u2028\u2029", // line separator, par separator
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\n\n", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\r\n\r\n", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\n\r", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextLine", true}, {"hasNextChar", true},
+            {"readLine", ""}, {"hasNextLine", false}, {"hasNextChar", false}
+        });
+        test("\r\n", 
+             new Object[][]{
+            {"readLine", ""}, {"hasNextChar", false}, {"hasNextLine", false}
+        });
+        test("3E4 \t -0.5 \n \t +4", 
+             new Object[][]{
+            {"readAllDoubles", new double[] {30000, -0.5, 4}}
+        });
+        test(" whitespace ", 
+             new Object[][]{
+            {"readString", "whitespace"}, {"readChar", ' '},
+            {"hasNextLine", false}
+        });
+        test(" whitespace \n", 
+             new Object[][]{
+            {"readString", "whitespace"}, {"readChar", ' '},
+            {"readLine", ""}, {"hasNextLine", false}
+        });
+        test(" whitespace \n ", 
+             new Object[][]{
+            {"readString", "whitespace"}, {"readChar", ' '},
+            {"readLine", ""}, {"hasNextLine", true},
+            {"readLine", " "}, {"hasNextLine", false}
+        });
+        test(" 34 -12983   3.25\n\t foo!",
+             new Object[][]{
+            {"readByte", (byte)34}, 
+            {"readShort", (short)-12983},
+            {"readDouble", 3.25},
+            {"readAll", "\n\t foo!"}
+        });
+        test("30000000000  3.5 3e4, foo   \t\t ya",
+             new Object[][]{
+            {"readLong", 30000000000L},
+            {"readFloat", (float)3.5},
+            {"readAllStrings", new String[]{"3e4,", "foo", "ya"}}
+        });
+        // testing consistency of whitespace and read(All)String(s)
+        test(" \u0001 foo \u0001 foo \u0001 foo",
+             new Object[][]{
+            {"readAllStrings", new String[]{
+                "\u0001", "foo", "\u0001", "foo", "\u0001", "foo"}}
+        });
+        test(" \u2005 foo \u2005 foo \u2005 foo",
+             new Object[][]{
+            {"readAllStrings", new String[]{"foo", "foo", "foo"}}
+        });
+        test(" \u0001 foo \u0001 foo \u0001 foo",
+             new Object[][]{
+            {"readString", "\u0001"}, {"readString", "foo"},
+            {"readString", "\u0001"}, {"readString", "foo"},
+            {"readString", "\u0001"}, {"readString", "foo"}
+        });
+        test(" \u2005 foo \u2005 foo \u2005 foo",
+             new Object[][]{
+            {"readString", "foo"}, {"readString", "foo"}, {"readString", "foo"}
+        });
+        StdOut.printf("Ran %d tests.\n", testCount);
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdOut.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdOut.java
new file mode 100644
index 000000000..8bd63ed93
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdOut.java
@@ -0,0 +1,231 @@
+/*************************************************************************
+ *  Compilation:  javac StdOut.java
+ *  Execution:    java StdOut
+ *
+ *  Writes data of various types to standard output.
+ *
+ *************************************************************************/
+
+import java.io.OutputStreamWriter;
+import java.io.PrintWriter;
+import java.io.UnsupportedEncodingException;
+import java.util.Locale;
+
+/**
+ *  <i>Standard output</i>. This class provides methods for writing strings
+ *  and numbers to standard output.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/15inout">Section 1.5</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdOut {
+
+    // force Unicode UTF-8 encoding; otherwise it's system dependent
+    private static final String charsetName = "UTF-8";
+
+    // assume language = English, country = US for consistency with StdIn
+    private static final Locale US_LOCALE = new Locale("en", "US");
+
+    // send output here
+    private static PrintWriter out;
+
+    // this is called before invoking any methods
+    static {
+        try {
+            out = new PrintWriter(new OutputStreamWriter(System.out, charsetName), true);
+        }
+        catch (UnsupportedEncodingException e) { System.out.println(e); }
+    }
+
+    // don't instantiate
+    private StdOut() { }
+
+    // close the output stream (not required)
+   /**
+     * Close standard output.
+     */
+    public static void close() {
+        out.close();
+    }
+
+   /**
+     * Terminate the current line by printing the line separator string.
+     */
+    public static void println() {
+        out.println();
+    }
+
+   /**
+     * Print an object to standard output and then terminate the line.
+     */
+    public static void println(Object x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a boolean to standard output and then terminate the line.
+     */
+    public static void println(boolean x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a char to standard output and then terminate the line.
+     */
+    public static void println(char x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a double to standard output and then terminate the line.
+     */
+    public static void println(double x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a float to standard output and then terminate the line.
+     */
+    public static void println(float x) {
+        out.println(x);
+    }
+
+   /**
+     * Print an int to standard output and then terminate the line.
+     */
+    public static void println(int x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a long to standard output and then terminate the line.
+     */
+    public static void println(long x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a short to standard output and then terminate the line.
+     */
+    public static void println(short x) {
+        out.println(x);
+    }
+
+   /**
+     * Print a byte to standard output and then terminate the line.
+     */
+    public static void println(byte x) {
+        out.println(x);
+    }
+
+   /**
+     * Flush standard output.
+     */
+    public static void print() {
+        out.flush();
+    }
+
+   /**
+     * Print an Object to standard output and flush standard output.
+     */
+    public static void print(Object x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a boolean to standard output and flush standard output.
+     */
+    public static void print(boolean x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a char to standard output and flush standard output.
+     */
+    public static void print(char x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a double to standard output and flush standard output.
+     */
+    public static void print(double x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a float to standard output and flush standard output.
+     */
+    public static void print(float x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print an int to standard output and flush standard output.
+     */
+    public static void print(int x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a long to standard output and flush standard output.
+     */
+    public static void print(long x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a short to standard output and flush standard output.
+     */
+    public static void print(short x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a byte to standard output and flush standard output.
+     */
+    public static void print(byte x) {
+        out.print(x);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string to standard output using the specified
+     * format string and arguments, and flush standard output.
+     */
+    public static void printf(String format, Object... args) {
+        out.printf(US_LOCALE, format, args);
+        out.flush();
+    }
+
+   /**
+     * Print a formatted string to standard output using the specified
+     * locale, format string, and arguments, and flush standard output.
+     */
+    public static void printf(Locale locale, String format, Object... args) {
+        out.printf(locale, format, args);
+        out.flush();
+    }
+
+    // This method is just here to test the class
+    public static void main(String[] args) {
+
+        // write to stdout
+        StdOut.println("Test");
+        StdOut.println(17);
+        StdOut.println(true);
+        StdOut.printf("%.6f\n", 1.0/7.0);
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdRandom.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdRandom.java
new file mode 100644
index 000000000..d79ede79e
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdRandom.java
@@ -0,0 +1,347 @@
+/*************************************************************************
+ *  Compilation:  javac StdRandom.java
+ *  Execution:    java StdRandom
+ *
+ *  A library of static methods to generate pseudo-random numbers from
+ *  different distributions (bernoulli, uniform, gaussian, discrete,
+ *  and exponential). Also includes a method for shuffling an array.
+ *
+ *
+ *  %  java StdRandom 5
+ *  seed = 1316600602069
+ *  59 16.81826  true 8.83954  0 
+ *  32 91.32098  true 9.11026  0 
+ *  35 10.11874  true 8.95396  3 
+ *  92 32.88401  true 8.87089  0 
+ *  72 92.55791  true 9.46241  0 
+ *
+ *  % java StdRandom 5
+ *  seed = 1316600616575
+ *  96 60.17070  true 8.72821  0 
+ *  79 32.01607  true 8.58159  0 
+ *  81 59.49065  true 9.10423  1 
+ *  96 51.65818  true 9.02102  0 
+ *  99 17.55771  true 8.99762  0 
+ *
+ *  % java StdRandom 5 1316600616575
+ *  seed = 1316600616575
+ *  96 60.17070  true 8.72821  0 
+ *  79 32.01607  true 8.58159  0 
+ *  81 59.49065  true 9.10423  1 
+ *  96 51.65818  true 9.02102  0 
+ *  99 17.55771  true 8.99762  0 
+ *
+ *
+ *  Remark
+ *  ------
+ *    - Relies on randomness of nextDouble() method in java.util.Random
+ *      to generate pseudorandom numbers in [0, 1).
+ *
+ *    - This library allows you to set and get the pseudorandom number seed.
+ *
+ *    - See http://www.honeylocust.com/RngPack/ for an industrial
+ *      strength random number generator in Java.
+ *
+ *************************************************************************/
+
+import java.util.Random;
+
+/**
+ *  <i>Standard random</i>. This class provides methods for generating
+ *  random number from various distributions.
+ *  <p>
+ *  For additional documentation, see <a href="http://introcs.cs.princeton.edu/22library">Section 2.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i> by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdRandom {
+
+    private static Random random;    // pseudo-random number generator
+    private static long seed;        // pseudo-random number generator seed
+
+    // static initializer
+    static {
+        // this is how the seed was set in Java 1.4
+        seed = System.currentTimeMillis();
+        random = new Random(seed);
+    }
+
+    // don't instantiate
+    private StdRandom() { }
+
+    /**
+     * Set the seed of the psedurandom number generator.
+     */
+    public static void setSeed(long s) {
+        seed   = s;
+        random = new Random(seed);
+    }
+
+    /**
+     * Get the seed of the psedurandom number generator.
+     */
+    public static long getSeed() {
+        return seed;
+    }
+
+    /**
+     * Return real number uniformly in [0, 1).
+     */
+    public static double uniform() {
+        return random.nextDouble();
+    }
+
+    /**
+     * Return an integer uniformly between 0 (inclusive) and N (exclusive).
+     */
+    public static int uniform(int N) {
+        return random.nextInt(N);
+    }
+
+    ///////////////////////////////////////////////////////////////////////////
+    //  STATIC METHODS BELOW RELY ON JAVA.UTIL.RANDOM ONLY INDIRECTLY VIA
+    //  THE STATIC METHODS ABOVE.
+    ///////////////////////////////////////////////////////////////////////////
+
+    /**
+     * Return real number uniformly in [0, 1).
+     */
+    public static double random() {
+        return uniform();
+    }
+
+    /**
+     * Return int uniformly in [a, b).
+     */
+    public static int uniform(int a, int b) {
+        return a + uniform(b - a);
+    }
+
+    /**
+     * Return real number uniformly in [a, b).
+     */
+    public static double uniform(double a, double b) {
+        return a + uniform() * (b-a);
+    }
+
+    /**
+     * Return a boolean, which is true with probability p, and false otherwise.
+     */
+    public static boolean bernoulli(double p) {
+        return uniform() < p;
+    }
+
+    /**
+     * Return a boolean, which is true with probability .5, and false otherwise.
+     */
+    public static boolean bernoulli() {
+        return bernoulli(0.5);
+    }
+
+    /**
+     * Return a real number with a standard Gaussian distribution.
+     */
+    public static double gaussian() {
+        // use the polar form of the Box-Muller transform
+        double r, x, y;
+        do {
+            x = uniform(-1.0, 1.0);
+            y = uniform(-1.0, 1.0);
+            r = x*x + y*y;
+        } while (r >= 1 || r == 0);
+        return x * Math.sqrt(-2 * Math.log(r) / r);
+
+        // Remark:  y * Math.sqrt(-2 * Math.log(r) / r)
+        // is an independent random gaussian
+    }
+
+    /**
+     * Return a real number from a gaussian distribution with given mean and stddev
+     */
+    public static double gaussian(double mean, double stddev) {
+        return mean + stddev * gaussian();
+    }
+
+    /**
+     * Return an integer with a geometric distribution with mean 1/p.
+     */
+    public static int geometric(double p) {
+        // using algorithm given by Knuth
+        return (int) Math.ceil(Math.log(uniform()) / Math.log(1.0 - p));
+    }
+
+    /**
+     * Return an integer with a Poisson distribution with mean lambda.
+     */
+    public static int poisson(double lambda) {
+        // using algorithm given by Knuth
+        // see http://en.wikipedia.org/wiki/Poisson_distribution
+        int k = 0;
+        double p = 1.0;
+        double L = Math.exp(-lambda);
+        do {
+            k++;
+            p *= uniform();
+        } while (p >= L);
+        return k-1;
+    }
+
+    /**
+     * Return a real number with a Pareto distribution with parameter alpha.
+     */
+    public static double pareto(double alpha) {
+        return Math.pow(1 - uniform(), -1.0/alpha) - 1.0;
+    }
+
+    /**
+     * Return a real number with a Cauchy distribution.
+     */
+    public static double cauchy() {
+        return Math.tan(Math.PI * (uniform() - 0.5));
+    }
+
+    /**
+     * Return a number from a discrete distribution: i with probability a[i].
+     * Precondition: array entries are nonnegative and their sum (very nearly) equals 1.0.
+     */
+    public static int discrete(double[] a) {
+        double EPSILON = 1E-14;
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] < 0.0) throw new IllegalArgumentException("array entry " + i + " is negative: " + a[i]);
+            sum = sum + a[i];
+        }
+        if (sum > 1.0 + EPSILON || sum < 1.0 - EPSILON)
+            throw new IllegalArgumentException("sum of array entries not equal to one: " + sum);
+
+        // the for loop may not return a value when both r is (nearly) 1.0 and when the
+        // cumulative sum is less than 1.0 (as a result of floating-point roundoff error)
+        while (true) {
+            double r = uniform();
+            sum = 0.0;
+            for (int i = 0; i < a.length; i++) {
+                sum = sum + a[i];
+                if (sum > r) return i;
+            }
+        }
+    }
+
+    /**
+     * Return a real number from an exponential distribution with rate lambda.
+     */
+    public static double exp(double lambda) {
+        return -Math.log(1 - uniform()) / lambda;
+    }
+
+    /**
+     * Rearrange the elements of an array in random order.
+     */
+    public static void shuffle(Object[] a) {
+        int N = a.length;
+        for (int i = 0; i < N; i++) {
+            int r = i + uniform(N-i);     // between i and N-1
+            Object temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of a double array in random order.
+     */
+    public static void shuffle(double[] a) {
+        int N = a.length;
+        for (int i = 0; i < N; i++) {
+            int r = i + uniform(N-i);     // between i and N-1
+            double temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of an int array in random order.
+     */
+    public static void shuffle(int[] a) {
+        int N = a.length;
+        for (int i = 0; i < N; i++) {
+            int r = i + uniform(N-i);     // between i and N-1
+            int temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+
+    /**
+     * Rearrange the elements of the subarray a[lo..hi] in random order.
+     */
+    public static void shuffle(Object[] a, int lo, int hi) {
+        if (lo < 0 || lo > hi || hi >= a.length) {
+            throw new IndexOutOfBoundsException("Illegal subarray range");
+        }
+        for (int i = lo; i <= hi; i++) {
+            int r = i + uniform(hi-i+1);     // between i and hi
+            Object temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of the subarray a[lo..hi] in random order.
+     */
+    public static void shuffle(double[] a, int lo, int hi) {
+        if (lo < 0 || lo > hi || hi >= a.length) {
+            throw new IndexOutOfBoundsException("Illegal subarray range");
+        }
+        for (int i = lo; i <= hi; i++) {
+            int r = i + uniform(hi-i+1);     // between i and hi
+            double temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Rearrange the elements of the subarray a[lo..hi] in random order.
+     */
+    public static void shuffle(int[] a, int lo, int hi) {
+        if (lo < 0 || lo > hi || hi >= a.length) {
+            throw new IndexOutOfBoundsException("Illegal subarray range");
+        }
+        for (int i = lo; i <= hi; i++) {
+            int r = i + uniform(hi-i+1);     // between i and hi
+            int temp = a[i];
+            a[i] = a[r];
+            a[r] = temp;
+        }
+    }
+
+    /**
+     * Unit test.
+     */
+    public static void main(String[] args) {
+        int N = Integer.parseInt(args[0]);
+        if (args.length == 2) StdRandom.setSeed(Long.parseLong(args[1]));
+        double[] t = { .5, .3, .1, .1 };
+
+        StdOut.println("seed = " + StdRandom.getSeed());
+        for (int i = 0; i < N; i++) {
+            StdOut.printf("%2d "  , uniform(100));
+            StdOut.printf("%8.5f ", uniform(10.0, 99.0));
+            StdOut.printf("%5b "  , bernoulli(.5));
+            StdOut.printf("%7.5f ", gaussian(9.0, .2));
+            StdOut.printf("%2d "  , discrete(t));
+            StdOut.println();
+        }
+
+        String[] a = "A B C D E F G".split(" ");
+        for (String s : a)
+            StdOut.print(s + " ");
+        StdOut.println();
+    }
+
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdStats.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdStats.java
new file mode 100644
index 000000000..2a9aeb0c2
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/StdStats.java
@@ -0,0 +1,336 @@
+
+/*************************************************************************
+ *  Compilation:  javac StdStats.java
+ *  Execution:    java StdStats < input.txt
+ *
+ *  Library of statistical functions.
+ *
+ *  The test client reads an array of real numbers from standard
+ *  input, and computes the minimum, mean, maximum, and
+ *  standard deviation.
+ *
+ *  The functions all throw a NullPointerException if the array
+ *  passed in is null.
+
+ *  % more tiny.txt
+ *  5
+ *  3.0 1.0 2.0 5.0 4.0
+ *
+ *  % java StdStats < tiny.txt
+ *         min   1.000
+ *        mean   3.000
+ *         max   5.000
+ *     std dev   1.581
+ *
+ *************************************************************************/
+
+/**
+ *  <i>Standard statistics</i>. This class provides methods for computing
+ *  statistics such as min, max, mean, sample standard deviation, and
+ *  sample variance.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/22library">Section 2.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ *
+ *  @author Robert Sedgewick
+ *  @author Kevin Wayne
+ */
+public final class StdStats {
+
+    private StdStats() { }
+
+    /**
+      * Return maximum value in array, -infinity if no such value.
+      */
+    public static double max(double[] a) {
+        double max = Double.NEGATIVE_INFINITY;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] > max) max = a[i];
+        }
+        return max;
+    }
+
+    /**
+      * Return maximum value in subarray a[lo..hi], -infinity if no such value.
+      */
+    public static double max(double[] a, int lo, int hi) {
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        double max = Double.NEGATIVE_INFINITY;
+        for (int i = lo; i <= hi; i++) {
+            if (a[i] > max) max = a[i];
+        }
+        return max;
+    }
+
+   /**
+     * Return maximum value of array, Integer.MIN_VALUE if no such value
+     */
+    public static int max(int[] a) {
+        int max = Integer.MIN_VALUE;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] > max) max = a[i];
+        }
+        return max;
+    }
+
+   /**
+     * Return minimum value in array, +infinity if no such value.
+     */
+    public static double min(double[] a) {
+        double min = Double.POSITIVE_INFINITY;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] < min) min = a[i];
+        }
+        return min;
+    }
+
+    /**
+      * Return minimum value in subarray a[lo..hi], +infinity if no such value.
+      */
+    public static double min(double[] a, int lo, int hi) {
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        double min = Double.POSITIVE_INFINITY;
+        for (int i = lo; i <= hi; i++) {
+            if (a[i] < min) min = a[i];
+        }
+        return min;
+    }
+
+   /**
+     * Return minimum value of array, Integer.MAX_VALUE if no such value
+     */
+    public static int min(int[] a) {
+        int min = Integer.MAX_VALUE;
+        for (int i = 0; i < a.length; i++) {
+            if (a[i] < min) min = a[i];
+        }
+        return min;
+    }
+
+   /**
+     * Return average value in array, NaN if no such value.
+     */
+    public static double mean(double[] a) {
+        if (a.length == 0) return Double.NaN;
+        double sum = sum(a);
+        return sum / a.length;
+    }
+
+   /**
+     * Return average value in subarray a[lo..hi], NaN if no such value.
+     */
+    public static double mean(double[] a, int lo, int hi) {
+        int length = hi - lo + 1;
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        if (length == 0) return Double.NaN;
+        double sum = sum(a, lo, hi);
+        return sum / length;
+    }
+
+   /**
+     * Return average value in array, NaN if no such value.
+     */
+    public static double mean(int[] a) {
+        if (a.length == 0) return Double.NaN;
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum = sum + a[i];
+        }
+        return sum / a.length;
+    }
+
+   /**
+     * Return sample variance of array, NaN if no such value.
+     */
+    public static double var(double[] a) {
+        if (a.length == 0) return Double.NaN;
+        double avg = mean(a);
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / (a.length - 1);
+    }
+
+   /**
+     * Return sample variance of subarray a[lo..hi], NaN if no such value.
+     */
+    public static double var(double[] a, int lo, int hi) {
+        int length = hi - lo + 1;
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        if (length == 0) return Double.NaN;
+        double avg = mean(a, lo, hi);
+        double sum = 0.0;
+        for (int i = lo; i <= hi; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / (length - 1);
+    }
+
+   /**
+     * Return sample variance of array, NaN if no such value.
+     */
+    public static double var(int[] a) {
+        if (a.length == 0) return Double.NaN;
+        double avg = mean(a);
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / (a.length - 1);
+    }
+
+   /**
+     * Return population variance of array, NaN if no such value.
+     */
+    public static double varp(double[] a) {
+        if (a.length == 0) return Double.NaN;
+        double avg = mean(a);
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / a.length;
+    }
+
+   /**
+     * Return population variance of subarray a[lo..hi],  NaN if no such value.
+     */
+    public static double varp(double[] a, int lo, int hi) {
+        int length = hi - lo + 1;
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        if (length == 0) return Double.NaN;
+        double avg = mean(a, lo, hi);
+        double sum = 0.0;
+        for (int i = lo; i <= hi; i++) {
+            sum += (a[i] - avg) * (a[i] - avg);
+        }
+        return sum / length;
+    }
+
+
+   /**
+     * Return sample standard deviation of array, NaN if no such value.
+     */
+    public static double stddev(double[] a) {
+        return Math.sqrt(var(a));
+    }
+
+   /**
+     * Return sample standard deviation of subarray a[lo..hi], NaN if no such value.
+     */
+    public static double stddev(double[] a, int lo, int hi) {
+        return Math.sqrt(var(a, lo, hi));
+    }
+
+   /**
+     * Return sample standard deviation of array, NaN if no such value.
+     */
+    public static double stddev(int[] a) {
+        return Math.sqrt(var(a));
+    }
+
+   /**
+     * Return population standard deviation of array, NaN if no such value.
+     */
+    public static double stddevp(double[] a) {
+        return Math.sqrt(varp(a));
+    }
+
+   /**
+     * Return population standard deviation of subarray a[lo..hi], NaN if no such value.
+     */
+    public static double stddevp(double[] a, int lo, int hi) {
+        return Math.sqrt(varp(a, lo, hi));
+    }
+
+   /**
+     * Return sum of all values in array.
+     */
+    public static double sum(double[] a) {
+        double sum = 0.0;
+        for (int i = 0; i < a.length; i++) {
+            sum += a[i];
+        }
+        return sum;
+    }
+
+   /**
+     * Return sum of all values in subarray a[lo..hi].
+     */
+    public static double sum(double[] a, int lo, int hi) {
+        if (lo < 0 || hi >= a.length || lo > hi)
+            throw new RuntimeException("Subarray indices out of bounds");
+        double sum = 0.0;
+        for (int i = lo; i <= hi; i++) {
+            sum += a[i];
+        }
+        return sum;
+    }
+
+   /**
+     * Return sum of all values in array.
+     */
+    public static int sum(int[] a) {
+        int sum = 0;
+        for (int i = 0; i < a.length; i++) {
+            sum += a[i];
+        }
+        return sum;
+    }
+
+   /**
+     * Plot points (i, a[i]) to standard draw.
+     */
+    public static void plotPoints(double[] a) {
+        int N = a.length;
+        StdDraw.setXscale(0, N-1);
+        StdDraw.setPenRadius(1.0 / (3.0 * N));
+        for (int i = 0; i < N; i++) {
+            StdDraw.point(i, a[i]);
+        }
+    }
+
+   /**
+     * Plot line segments connecting points (i, a[i]) to standard draw.
+     */
+    public static void plotLines(double[] a) {
+        int N = a.length;
+        StdDraw.setXscale(0, N-1);
+        StdDraw.setPenRadius();
+        for (int i = 1; i < N; i++) {
+            StdDraw.line(i-1, a[i-1], i, a[i]);
+        }
+    }
+
+   /**
+     * Plot bars from (0, a[i]) to (i, a[i]) to standard draw.
+     */
+    public static void plotBars(double[] a) {
+        int N = a.length;
+        StdDraw.setXscale(0, N-1);
+        for (int i = 0; i < N; i++) {
+            StdDraw.filledRectangle(i, a[i]/2, .25, a[i]/2);
+        }
+    }
+
+
+   /**
+     * Test client.
+     * Convert command-line arguments to array of doubles and call various methods.
+     */
+    public static void main(String[] args) {
+        double[] a = StdArrayIO.readDouble1D();
+        StdOut.printf("       min %7.3f\n", min(a));
+        StdOut.printf("      mean %7.3f\n", mean(a));
+        StdOut.printf("       max %7.3f\n", max(a));
+        StdOut.printf("   std dev %7.3f\n", stddev(a));
+    }
+}
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Stopwatch.java b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Stopwatch.java
new file mode 100644
index 000000000..f36ba94fa
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/Stopwatch.java
@@ -0,0 +1,44 @@
+/*************************************************************************
+ *  Compilation:  javac Stopwatch.java
+ *
+ *
+ *************************************************************************/
+
+/**
+ *  <i>Stopwatch</i>. This class is a data type for measuring
+ *  the running time (wall clock) of a program.
+ *  <p>
+ *  For additional documentation, see
+ *  <a href="http://introcs.cs.princeton.edu/32class">Section 3.2</a> of
+ *  <i>Introduction to Programming in Java: An Interdisciplinary Approach</i>
+ *  by Robert Sedgewick and Kevin Wayne.
+ */
+
+
+
+public class Stopwatch { 
+
+    private final long start;
+
+    private String startString;
+
+   /**
+     * Create a stopwatch object.
+     */
+    public Stopwatch() {
+        start = System.currentTimeMillis();
+
+        java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat("HH:mm:ss.SSS");
+        startString = sdf.format(start);
+    } 
+
+
+   /**
+     * Return elapsed time (in seconds) since this object was created.
+     */
+    public double elapsedTime() {
+        long now = System.currentTimeMillis();
+        return (now - start) / 1000.0;
+    }
+
+} 
diff --git a/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/mandrill.jpg b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/mandrill.jpg
new file mode 100644
index 000000000..ec58db892
Binary files /dev/null and b/v4-cokapi/backends/java/java_jail/cp/visualizer-stdlib/mandrill.jpg differ
diff --git a/v4-cokapi/backends/java/java_jail/dev/.gitignore b/v4-cokapi/backends/java/java_jail/dev/.gitignore
new file mode 100644
index 000000000..9199e397a
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/dev/.gitignore
@@ -0,0 +1,3 @@
+null
+random
+urandom
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/etc/.gitignore b/v4-cokapi/backends/java/java_jail/etc/.gitignore
new file mode 100644
index 000000000..884135bea
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/etc/.gitignore
@@ -0,0 +1 @@
+ld.so.cache
\ No newline at end of file
diff --git a/v4-cokapi/backends/java/java_jail/java/.gitignore b/v4-cokapi/backends/java/java_jail/java/.gitignore
new file mode 100644
index 000000000..de4f4dbd1
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/java/.gitignore
@@ -0,0 +1,16 @@
+bin
+COPYRIGHT
+db
+include
+jre
+lib
+LICENSE
+man
+README.html
+release
+src.zip
+THIRDPARTYLICENSEREADME-JAVAFX.txt
+THIRDPARTYLICENSEREADME.txt
+demo
+sample
+javafx-src.zip
diff --git a/v4-cokapi/backends/java/java_jail/lib64/.gitignore b/v4-cokapi/backends/java/java_jail/lib64/.gitignore
new file mode 100644
index 000000000..bede1dfb7
--- /dev/null
+++ b/v4-cokapi/backends/java/java_jail/lib64/.gitignore
@@ -0,0 +1,15 @@
+ld-linux-x86-64.so.2
+libc.so.6
+libdl.so.2
+libjava.so
+libjli.so
+libjvm.so
+libm.so.6
+libnsl.so.1
+libnss_compat.so.2
+libnss_dns.so.2
+libnss_files.so.2
+libnss_nis.so.2
+libpthread.so.0
+libresolv.so.2
+librt.so.1
diff --git a/v4-cokapi/backends/java/run-java-backend.sh b/v4-cokapi/backends/java/run-java-backend.sh
new file mode 100644
index 000000000..f5cd0be24
--- /dev/null
+++ b/v4-cokapi/backends/java/run-java-backend.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+# $1 is a string representing a JSON object that the Java backend
+# expects as input, such as: java_jail/cp/traceprinter/test-input.txt
+
+# this will be run within Docker
+
+# tricky! use a heredoc to pipe the $1 argument into the stdin of the
+# java executable WITHOUT interpreting escape chars such as '\n' ...
+# echo doesn't work here since it interprets '\n' and other chars
+#
+# TODO: use -Xmx512m if we need more memory
+cat <<ENDEND | java -Xmx384m -cp /tmp/java_jail/cp:/tmp/java_jail/cp/javax.json-1.0.jar:/usr/lib/jvm/java-7-openjdk-amd64/lib/tools.jar:/tmp/java_jail/cp/visualizer-stdlib traceprinter.InMemory
+$1
+ENDEND
diff --git a/v4-cokapi/backends/javascript/Makefile b/v4-cokapi/backends/javascript/Makefile
new file mode 100644
index 000000000..510385f1b
--- /dev/null
+++ b/v4-cokapi/backends/javascript/Makefile
@@ -0,0 +1,25 @@
+# to run on a specific input file: make infile=tests/fact.js
+all:
+	jshint jslogger.js && node --expose-debug-as=Debug jslogger.js $(infile)
+
+# to run on a specific input file: make trace infile=tests/fact.js
+trace:
+	jshint jslogger.js && node --expose-debug-as=Debug jslogger.js --jsfile=/Users/pgbovine/Dropbox/opt-git/OnlinePythonTutor/v3/test-trace.js $(infile)
+
+# to run on a specific input file: make pretty infile=tests/fact.js
+pretty:
+	jshint jslogger.js && node --expose-debug-as=Debug jslogger.js --prettydump=true $(infile)
+
+tspretty:
+	jshint jslogger.js && node --expose-debug-as=Debug jslogger.js --prettydump=true --typescript=true $(infile)
+
+test:
+	jshint jslogger.js && python golden_test.py --all
+
+diffall:
+	jshint jslogger.js && python golden_test.py --diffall
+
+deps:
+	npm install eval underscore esprima minimist source-map
+	sudo npm install typescript # ugh need sudo
+	#sudo npm link typescript # (maybe needed so that require('typescript') will work
diff --git a/v4-cokapi/backends/javascript/README b/v4-cokapi/backends/javascript/README
new file mode 100644
index 000000000..93d716656
--- /dev/null
+++ b/v4-cokapi/backends/javascript/README
@@ -0,0 +1 @@
+Run 'make deps' to install node dependencies in here
diff --git a/v4-cokapi/backends/javascript/golden_test.py b/v4-cokapi/backends/javascript/golden_test.py
new file mode 100644
index 000000000..d584f4e65
--- /dev/null
+++ b/v4-cokapi/backends/javascript/golden_test.py
@@ -0,0 +1,185 @@
+''' 
+A simple framework for regression testing based on golden files
+by Philip Guo
+'''
+
+# find all input files with extension INPUT_FILE_EXTENSION in TESTDIRS
+TESTDIRS = ['tests/']
+INPUT_FILE_EXTENSION = '.js'
+
+# program to run, with input file as an extra argument
+PROGRAM = ['node', '--expose-debug-as=Debug', 'jslogger.js', '--prettydump=true']
+
+# this program should output to stdout, which will be redirected to this
+# extension:
+OUTPUT_FILE_EXTENSION = '.out'
+
+# extension for golden files:
+GOLDEN_FILE_EXTENSION = '.golden'
+
+
+import itertools
+import os, re, shutil, optparse, difflib
+from subprocess import *
+
+RED   = '\033[91m'
+ENDC  = '\033[0m'  # end color
+
+def filter_output(s):
+  return s
+
+
+def execute(input_filename):
+  assert os.path.isfile(input_filename)
+  (base, ext) = os.path.splitext(input_filename)
+  assert ext == INPUT_FILE_EXTENSION
+
+  (stdout, stderr) = Popen(PROGRAM + [input_filename], stdout=PIPE, stderr=PIPE).communicate()
+
+  if stderr:
+    print '(has stderr)'
+  #  print '  stderr {'
+  #  print stderr, '}'
+  else:
+    print
+
+  # capture stdout into outfile, filtering out machine-specific addresses
+  outfile = base + OUTPUT_FILE_EXTENSION
+  outf = open(outfile, 'w')
+
+  for line in stdout.splitlines():
+    filtered_line = re.sub(' 0x.+?>', ' 0xADDR>', line)
+    print >> outf, filtered_line
+
+  outf.close()
+
+
+def clobber_golden_file(golden_file):
+  (base, ext) = os.path.splitext(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+  print '  Clobber %s => %s' % (outfile, golden_file)
+  shutil.copy(outfile, golden_file)
+
+
+# returns True if there is a diff, False otherwise
+def golden_differs_from_out(golden_file):
+  (base, ext) = os.path.splitext(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+  assert os.path.isfile(golden_file)
+
+  golden_s = open(golden_file).readlines()
+  out_s = open(outfile).readlines()
+
+  golden_s_filtered = filter_output(golden_s)
+  out_s_filtered = filter_output(out_s)
+
+  return out_s_filtered != golden_s_filtered
+
+
+def diff_test_output(test_name):
+  (base, ext) = os.path.splitext(test_name)
+
+  golden_file = base + GOLDEN_FILE_EXTENSION
+  assert os.path.isfile(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+
+  golden_s = open(golden_file).readlines()
+  out_s = open(outfile).readlines()
+
+  golden_s_filtered = filter_output(golden_s)
+  out_s_filtered = filter_output(out_s)
+
+  first_line = True
+  for line in difflib.unified_diff(golden_s_filtered, out_s_filtered, \
+                                   fromfile=golden_file, tofile=outfile):
+    if first_line:
+      print # print an extra line to ease readability
+      first_line = False
+    print line,
+
+
+def run_test(input_filename, clobber_golden=False):
+  print 'Testing', input_filename,
+
+  (base, ext) = os.path.splitext(input_filename)
+  assert ext == INPUT_FILE_EXTENSION
+
+  # to eliminate possibility of using stale output:
+  outfile = base + OUTPUT_FILE_EXTENSION
+  if os.path.isfile(outfile):
+    os.remove(outfile)
+
+  input_fullpath = input_filename
+  execute(input_fullpath)
+
+  golden_file = base + GOLDEN_FILE_EXTENSION
+  if os.path.isfile(golden_file):
+    if golden_differs_from_out(golden_file):
+      print "  " + RED + "FAILED!!!" + ENDC
+    if clobber_golden:
+      clobber_golden_file(golden_file)
+  else:
+    clobber_golden_file(golden_file)
+
+
+def run_all_tests(clobber=False):
+  for t in ALL_TESTS:
+    run_test(t, clobber)
+
+def diff_all_test_outputs():
+  for t in ALL_TESTS:
+    diff_test_output(t)
+
+
+if __name__ == "__main__":
+  parser = optparse.OptionParser()
+  parser.add_option("--all", action="store_true", dest="run_all",
+                    help="Run all tests")
+  parser.add_option("--only-clobber", action="store_true", dest="only_clobber",
+                    help="Clobber ALL golden files WITHOUT re-running tests")
+  parser.add_option("--clobber", action="store_true", dest="clobber",
+                    help="Clobber golden files when running tests")
+  parser.add_option("--test", dest="test_name",
+                    help="Run one test")
+  parser.add_option("--difftest", dest="diff_test_name",
+                    help="Diff against golden file for one test")
+  parser.add_option("--diffall", action="store_true", dest="diff_all",
+                    help="Diff against golden file for all tests")
+  (options, args) = parser.parse_args()
+
+  ALL_TESTS = []
+
+  for (pwd, subdirs, files) in itertools.chain(*[os.walk(e) for e in TESTDIRS]):
+    for f in files:
+      (base, ext) = os.path.splitext(f)
+      if ext == INPUT_FILE_EXTENSION:
+        fullpath = os.path.join(pwd, f)
+        ALL_TESTS.append(fullpath)
+
+
+  if options.run_all:
+    if options.clobber:
+      print 'Running all tests and clobbering results ...'
+    else:
+      print 'Running all tests ...'
+    run_all_tests(options.clobber)
+
+  elif options.diff_all:
+    diff_all_test_outputs()
+  elif options.diff_test_name:
+    assert options.diff_test_name in ALL_TESTS
+    diff_test_output(options.diff_test_name)
+  elif options.test_name:
+    assert options.test_name in ALL_TESTS
+    run_test(options.test_name, options.clobber)
+  elif options.only_clobber:
+    for t in ALL_TESTS:
+      (base, ext) = os.path.splitext(t)
+      golden_file = base + GOLDEN_FILE_EXTENSION
+      clobber_golden_file(golden_file)
+  else:
+    parser.print_help()
+
diff --git a/v4-cokapi/backends/javascript/jslogger.js b/v4-cokapi/backends/javascript/jslogger.js
new file mode 100644
index 000000000..069edfaf7
--- /dev/null
+++ b/v4-cokapi/backends/javascript/jslogger.js
@@ -0,0 +1,1020 @@
+/*
+
+JS logger backend for Online Python Tutor runtime visualizer
+
+First version created on: 2015-01-02 by Philip Guo
+
+Run as:
+node --expose-debug-as=Debug jslogger.js
+
+Usage:
+
+# to output trace as 'var trace=<trace object>' to a JavaScript file, run:
+node --expose-debug-as=Debug jslogger.js --jsfile=<path> <filename of user's script>
+
+# to dump compact json to stdout, run:
+node --expose-debug-as=Debug jslogger.js --jsondump=true <filename of user's script>
+
+# to dump a pretty-printed version suitable for diffing and regression tests
+node --expose-debug-as=Debug jslogger.js --prettydump=true <filename of user's script>
+
+# to run with a script provided on the command line, run something like:
+node --expose-debug-as=Debug jslogger.js --jsondump=true --code="<user's script>"
+ 
+see v8/src/debug-debugger.js for some of the impl of the API
+
+v8 debugger protocol:
+https://code.google.com/p/v8-wiki/wiki/DebuggerProtocol
+
+Prereqs:
+npm install eval
+npm install underscore
+npm install esprima
+npm install minimist
+
+For TypeScript support:
+
+npm install typescript
+sudo npm link typescript # to expose TypeScript compiler
+npm install source-map
+
+
+From: https://code.google.com/p/v8-wiki/wiki/DebuggerProtocol
+regarding the 'handle_' field of serialized objects ...
+
+  All objects exposed through the debugger is assigned an ID called a
+  handle. This handle is serialized and can be used to identify objects.
+  A handle has a certain lifetime after which it will no longer refer to
+  the same object. Currently the lifetime of handles match the
+  processing of a debug event. For each debug event handles are
+  recycled.
+
+
+TODOs:
+
+
+Low-priority TODOs:
+
+- maybe directly use vm.runInContext
+- realize that running within VM module leads to subtle behavioral
+  differences, as documented in the Node docs
+
+- check out PromiseEvent and AsyncTaskEvent for maybe handling callbacks?
+
+Debug.DebugEvent = { Break: 1,
+                     Exception: 2,
+                     NewFunction: 3,
+                     BeforeCompile: 4,
+                     AfterCompile: 5,
+                     CompileError: 6,
+                     PromiseEvent: 7,
+                     AsyncTaskEvent: 8,
+                     BreakForCommand: 9 };
+
+
+TypeScript TODOs:
+
+- display more than one error in the trace when there's a TypeScript
+  compiler error. right now we display only the first error for simplicity.
+
+- add regression tests
+
+*/
+
+
+/*jshint node: true */
+/* global Debug */
+"use strict";
+
+var _eval = require('eval');
+var esprima = require('esprima');
+var util = require('util');
+var fs = require('fs');
+var _ = require('underscore');
+var debug = Debug.Debug;
+
+var log = console.warn; // use stderr because stdout is being captured in the trace
+
+
+var argv = require('minimist')(process.argv.slice(2));
+
+
+var IGNORE_GLOBAL_VARS = {'ArrayBuffer': true,
+                          'Int8Array': true,
+                          'Uint8Array': true,
+                          'Uint8ClampedArray': true,
+                          'Int16Array': true,
+                          'Uint16Array': true,
+                          'Int32Array': true,
+                          'Uint32Array': true,
+                          'Float32Array': true,
+                          'Float64Array': true,
+                          'DataView': true,
+                          'DTRACE_NET_SERVER_CONNECTION': true,
+                          'DTRACE_NET_STREAM_END': true,
+                          'DTRACE_NET_SOCKET_READ': true,
+                          'DTRACE_NET_SOCKET_WRITE': true,
+                          'DTRACE_HTTP_SERVER_REQUEST': true,
+                          'DTRACE_HTTP_SERVER_RESPONSE': true,
+                          'DTRACE_HTTP_CLIENT_REQUEST': true,
+                          'DTRACE_HTTP_CLIENT_RESPONSE': true,
+                          'global': true,
+                          'process': true,
+                          'GLOBAL': true,
+                          'root': true,
+                          'Buffer': true,
+                          'setTimeout': true,
+                          'setInterval': true,
+                          'clearTimeout': true,
+                          'clearInterval': true,
+                          'setImmediate': true,
+                          'clearImmediate': true,
+                          'console': true,
+                          'require': true,
+                          'exports': true,
+                          'module': true};
+
+
+var MAX_EXECUTED_LINES = 300;
+
+String.prototype.rtrim = function() {
+  return this.replace(/\s*$/g, "");
+};
+
+
+// Inspired by https://github.com/Microsoft/TypeScript/wiki/Using-the-Compiler-API
+var ts = require("typescript");
+var path = require("path");
+
+function typescriptCompile(contents) {
+    // default ts standard library
+    var libSource = fs.readFileSync(path.join(path.dirname(require.resolve('typescript')), 'lib.d.ts')).toString();
+
+    var compilerOptions = {sourceMap: true}; // yes, create a source map!
+    // Generated outputs
+    var outputs = [];
+    // Create a compilerHost object to allow the compiler to read and write files
+    var compilerHost = {
+        getSourceFile: function (filename, languageVersion) {
+            if (filename === "file.ts")
+                return ts.createSourceFile(filename, contents, compilerOptions.target, "0");
+            if (filename === "lib.d.ts")
+                return ts.createSourceFile(filename, libSource, compilerOptions.target, "0");
+            return undefined;
+        },
+        writeFile: function (name, text, writeByteOrderMark) {
+            outputs.push({ name: name, text: text, writeByteOrderMark: writeByteOrderMark });
+        },
+        getDefaultLibFilename: function () { return "lib.d.ts"; },
+        useCaseSensitiveFileNames: function () { return false; },
+        getCanonicalFileName: function (filename) { return filename; },
+        getCurrentDirectory: function () { return ""; },
+        getNewLine: function () { return "\n"; }
+    };
+    // Create a program from inputs
+    var program = ts.createProgram(["file.ts"], compilerOptions, compilerHost);
+    // Query for early errors
+    var errors = program.getDiagnostics();
+    // Do not generate code in the presence of early errors
+    if (!errors.length) {
+        // Type check and get semantic errors
+        var checker = program.getTypeChecker(true);
+        errors = checker.getDiagnostics();
+        // Generate output
+        checker.emitFiles();
+    }
+    return {
+        outputs: outputs,
+        //errors: errors.map(function (e) { return e.file.filename + "(" + e.file.getLineAndCharacterFromPosition(e.start).line + "): " + e.messageText; })
+        errors: errors.map(function (e) {
+            var errPos = e.file.getLineAndCharacterFromPosition(e.start);
+            return {line: errPos.line, msg: e.messageText};
+        })
+    };
+}
+
+
+// for some reason, stderr is borked when running under the node
+// debugger, so we must print to stdout. the node 'assert' module fails
+// silently :/
+function assert(cond) {
+  if (!cond) {
+    var stack = new Error().stack;
+    log('Assertion error');
+    log(stack);
+    throw 'Assertion Failure';
+  }
+}
+
+
+function wrapUserscript(userscript) {
+  var s = "\"use strict\";\ndebugger;\n";
+  s += userscript.rtrim();
+  return s;
+}
+
+
+var originalStdout = process.stdout.write;
+var fauxStdout = [];
+
+function redirectStdout() {
+  process.stdout.write = function(string) {
+    fauxStdout.push(string);
+  };
+}
+
+function resetStdout() {
+  process.stdout.write = originalStdout;
+}
+
+function fauxStdoutToString() {
+  return fauxStdout.join('');
+}
+
+
+// Key: string form of f.details_.frameId()
+// Value: integer number of times called
+//
+// because v8 reuses frame objects (presumably for optimizations), we
+// must munge frame IDs based on the number of times a function was
+// called. every time a function RETURNS, increment the call count by 1
+var frameIdCalls = {};
+
+var curSmallId = 1;
+var frameIdToSmallIds = {};
+
+function getCanonicalFrameId(frame) {
+  var baseFrameId = String(frame.details_.frameId()); // don't forget to stringify!
+  var realFrameId = baseFrameId;
+  if (frameIdCalls[baseFrameId] !== undefined) {
+    realFrameId = baseFrameId + '_' + String(frameIdCalls[baseFrameId]);
+  }
+
+  // now canonicalize
+  if (frameIdToSmallIds[realFrameId] === undefined) {
+    frameIdToSmallIds[realFrameId] = curSmallId++;
+  }
+
+  return frameIdToSmallIds[realFrameId];
+}
+
+function encodeToplevelObject(o) {
+  return encodeObject(o.value_);
+}
+
+var smallObjId = 1;
+
+// Key: string form of smallObjId
+// Value: encoded (compound) heap object
+var encodedHeapObjects = {};
+
+function getHeap() {
+  return encodedHeapObjects;
+}
+
+function resetHeap() {
+  // VERY IMPORTANT to reassign to an empty object rather than just
+  // clearing the existing object, since getHeap() could have been
+  // called earlier to return a reference to a previous heap state
+  encodedHeapObjects = {};
+}
+
+// modeled after:
+// https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/pg_encoder.py
+//
+// modifies global encodedHeapObjects
+function encodeObject(o) {
+  if (_.isNumber(o)) {
+    if (_.isNaN(o)) {
+      return ['SPECIAL_FLOAT', 'NaN'];
+    } else if (o === Infinity) {
+      return ['SPECIAL_FLOAT', 'Infinity'];
+    } else if (o === -Infinity) {
+      return ['SPECIAL_FLOAT', '-Infinity'];
+    } else {
+      return o;
+    }
+  } else if (_.isString(o)) {
+    return o;
+  } else if (_.isBoolean(o) || _.isNull(o) || _.isUndefined(o)) {
+    return ['JS_SPECIAL_VAL', String(o)];
+  } else {
+    // render these as heap objects
+
+    // very important to use _.has since we don't want to
+    // grab the property in your prototype, only in YOURSELF ... SUBTLE!
+    if (!_.has(o, 'smallObjId_hidden_')) {
+      // make this non-enumerable so that it doesn't show up in
+      // console.log() or other inspector functions
+      Object.defineProperty(o, 'smallObjId_hidden_', { value: smallObjId,
+                                                       enumerable: false });
+      smallObjId++;
+    }
+    assert(o.smallObjId_hidden_ > 0);
+
+    var ret = ['REF', o.smallObjId_hidden_];
+
+    if (encodedHeapObjects[String(o.smallObjId_hidden_)] !== undefined) {
+      return ret;
+    }
+    else {
+      assert(_.isObject(o));
+
+      var newEncodedObj = [];
+      encodedHeapObjects[String(o.smallObjId_hidden_)] = newEncodedObj;
+
+      var i;
+
+      if (_.isFunction(o)) {
+        var funcProperties = []; // each element is a pair of [name, encoded value]
+
+        var encodedProto = null;
+        if (_.isObject(o.prototype)) {
+          // TRICKY TRICKY! for inheritance to be displayed properly, we
+          // want to find the prototype of o.prototype and see if it's
+          // non-empty. if that's true, then even if o.prototype is
+          // empty (i.e., has no properties of its own), then we should
+          // still encode it since its 'prototype' "uber-hidden
+          // property" is non-empty
+          var prototypeOfPrototype = Object.getPrototypeOf(o.prototype);
+          if (!_.isEmpty(o.prototype) ||
+              (_.isObject(prototypeOfPrototype) && !_.isEmpty(prototypeOfPrototype))) {
+            encodedProto = encodeObject(o.prototype);
+          }
+        }
+
+        if (encodedProto) {
+          funcProperties.push(['prototype', encodedProto]);
+        }
+
+        // now get all of the normal properties out of this function
+        // object (it's unusual to put properties in a function object,
+        // but it's still legal!)
+        var funcPropPairs = _.pairs(o);
+        for (i = 0; i < funcPropPairs.length; i++) {
+          funcProperties.push([funcPropPairs[i][0], encodeObject(funcPropPairs[i][1])]);
+        }
+
+        var funcCodeString = o.toString();
+
+        /*
+
+        #craftsmanship -- make nested functions look better by indenting
+        the first line of a nested function definition by however much
+        the LAST line is indented, ONLY if the last line is simply a
+        single ending '}'. otherwise it will look ugly since the
+        function definition doesn't start out indented, like so:
+
+function bar(x) {
+        globalZ += 100;
+        return x + y + globalZ;
+    }
+
+        */
+        var codeLines = funcCodeString.split('\n');
+        if (codeLines.length > 1) {
+          var lastLine = _.last(codeLines);
+          if (lastLine.trim() === '}') {
+            var lastLinePrefix = lastLine.slice(0, lastLine.indexOf('}'));
+            funcCodeString = lastLinePrefix + funcCodeString; // prepend!
+          }
+        }
+
+        newEncodedObj.push('JS_FUNCTION',
+                           o.name,
+                           funcCodeString, /* code string*/
+                           funcProperties.length ? funcProperties : null, /* OPTIONAL */
+                           null /* parent frame */);
+      } else if (_.isArray(o)) {
+        newEncodedObj.push('LIST');
+        for (i = 0; i < o.length; i++) {
+          newEncodedObj.push(encodeObject(o[i]));
+        }
+      } else {
+        // a true object
+
+        // if there's a custom toString() function (note that a truly
+        // prototypeless object won't have toString method, so check first to
+        // see if toString is *anywhere* up the prototype chain)
+        var s = (o.toString !== undefined) ? o.toString() : '';
+        if (s !== '' && s !== '[object Object]') {
+          newEncodedObj.push('INSTANCE_PPRINT', 'object', s);
+        } else {
+          newEncodedObj.push('INSTANCE', '');
+          var pairs = _.pairs(o);
+          for (i = 0; i < pairs.length; i++) {
+            var e = pairs[i];
+            newEncodedObj.push([encodeObject(e[0]), encodeObject(e[1])]);
+          }
+
+          var proto = Object.getPrototypeOf(o);
+          if (_.isObject(proto) && !_.isEmpty(proto)) {
+            //log('obj.prototype', proto, proto.smallObjId_hidden_);
+            // I think __proto__ is the official term for this field,
+            // *not* 'prototype'
+            newEncodedObj.push(['__proto__', encodeObject(proto)]);
+          }
+        }
+      }
+
+      return ret;
+    }
+
+  }
+  assert(false);
+}
+
+
+var curTrace = [];
+
+// to detect whether we have a possible function call
+var prevStack = null;
+
+function listener(event, execState, eventData, data) {
+  var stepType, i, n;
+  var ii, jj, sc, scopeType, scopeObj;
+  var f;
+
+  // TODO: catch CompileError and maybe other events too
+  if (event !== debug.DebugEvent.Break && event !== debug.DebugEvent.Exception) {
+    return;
+  }
+
+  var isException = (event === debug.DebugEvent.Exception);
+
+  var script   = eventData.func().script().name();
+  var line     = eventData.sourceLine() + 1;
+  var col      = eventData.sourceColumn();
+  assert(line >= 2);
+  line -= 2; // to account for wrapUserscript() adding extra lines
+
+  // if what we're currently executing isn't inside of userscript.js,
+  // then PUNT, since we're probably in the first line of console.log()
+  // or some other utility function (except for exceptions, heh)
+  if (script !== 'userscript.js') {
+    // this is SUPER hacky ... but if we encounter an exception in a
+    // library function AND we've already been running userscript.js
+    // (i.e., curTrace.length > 0), then still log that exception but
+    // adjust the line and column numbers to the proper values within
+    // the user's script.
+    if (isException && curTrace.length > 0) {
+      stepType = debug.StepAction.StepOut; // step out of the library func
+
+      // SUPER HACKY -- use the line and column numbers from the
+      // previous trace entry since that was in userscript.js
+      line = _.last(curTrace).line;
+      col = _.last(curTrace).col;
+    } else {
+      // any non-exception event should just be steppd out of
+      // immediately without logging to the trace ...
+      execState.prepareStep(debug.StepAction.StepOut);
+      return;
+    }
+  } else {
+    // NB: StepInMin is slightly finer-grained than StepIn
+    stepType = debug.StepAction.StepIn;
+
+    if (line === 0) { // the 'debugger;' line at the beginning of wrapUserscript
+      execState.prepareStep(stepType);
+      return;
+    }
+  }
+
+  //assert(script === 'userscript.js');
+
+  // VERY VERY VERY IMPORTANT, or else we won't properly capture heap
+  // object mutations in the trace!
+  resetHeap();
+
+  var all_userscript_frames = [];
+
+
+  //log('execState.frameCount', execState.frameCount());
+
+  // only dig up frames in userscript.js
+  for (i = 0, n = execState.frameCount(); i < n; i++) {
+    f = execState.frame(i);
+    var sn = f.func().script().name();
+
+    if (sn === 'userscript.js') {
+      all_userscript_frames.push(f);
+    }
+  }
+
+  if (all_userscript_frames.length > 0) {
+    var curTraceEntry = {};
+
+    var logEventType = 'step_line'; // the default until proven otherwise
+
+    var curStack = all_userscript_frames.map(function(f) {return getCanonicalFrameId(f);});
+    assert(curStack.length > 0);
+
+    if (prevStack) {
+      if (!_.isEqual(prevStack, curStack)) {
+        // test whether exactly one extra entry has been pushed to the
+        // front; if so, that's our newly-called frame
+        if (_.isEqual(prevStack, curStack.slice(1))) {
+          logEventType = 'call';
+        }
+      }
+    }
+    prevStack = curStack;
+
+    var topFrame = all_userscript_frames[0];
+    var topIsReturn = topFrame.isAtReturn();
+    if (topIsReturn) {
+      // nix this check below since it sometimes happens. see
+      // tests/eloquentjs-8.1.js
+      //assert(logEventType != 'call'); // shouldn't be a call AND return
+
+      logEventType = 'return';
+
+      // for aesthetics, if we're returning out of a function, set the
+      // line number to the PREVIOUS entry's line, since v8 records the
+      // line number here as usually where the '}' is in the function,
+      // which doesn't look good
+      //
+      // NB: this hack doesn't work all the time, e.g., when you're
+      // returning from more than one function call in short succession
+      if (curTrace.length > 0) {
+        var prevEntry = curTrace[curTrace.length - 1];
+        var prevEntryStack = prevEntry.stack_to_render;
+        if (prevEntryStack.length > 0) {
+          // do this ONLY IF if we're still in the same frame
+          var topFid = getCanonicalFrameId(topFrame);
+          if (prevEntryStack[prevEntryStack.length - 1].frame_id === topFid) {
+            line = prevEntry.line;
+          }
+        }
+      }
+    }
+
+    if (isException) {
+      logEventType = 'exception';
+      curTraceEntry.exception_msg = String(eventData.exception_);
+    }
+
+    curTraceEntry.stdout = fauxStdoutToString();
+    curTraceEntry.func_name = topFrame.func().name();
+    curTraceEntry.stack_to_render = [];
+
+    curTraceEntry.globals = {};
+    curTraceEntry.ordered_globals = [];
+
+    // apply the source map to get the right line numbers:
+    if (isTypescript) {
+      // source map doesn't seem to work for 'return' lines since the
+      // column is 0. hack: set the column to the FIRST column of the text
+      // in the line to get the source map to detect it ...
+      // (actually if it's more reliable, do this for EVERY kind of event,
+      // since we really don't care about column numbers, we care only
+      // about line numbers)
+      if (logEventType === 'return') {
+        var retline = allCodLines[line-1];
+        var retlineTrimmed = retline.trim();
+        var firstInd = retline.indexOf(retlineTrimmed);
+        assert(firstInd >= 0);
+        col = firstInd;
+      }
+      var tsPos = tsSourceMap.originalPositionFor({line: line, column: col});
+      //log('TS:', tsPos.line, tsPos.column);
+      line = tsPos.line;
+      col = tsPos.column;
+
+      // TypeScript features that lead to auto-generated hidden JS code
+      // (e.g., inheritance) leave no corresponding lines in the .ts file,
+      // so the conservative thing to do is to *SKIP* those steps, since we
+      // have nothing sensible to render for them anyhow
+      if (line === null || line === undefined) {
+        assert(stepType !== undefined);
+        execState.prepareStep(stepType); // set debugger to stop at next step
+        return; // get outta here early!
+      }
+    }
+
+    curTraceEntry.line = line;
+    curTraceEntry.col = col;
+    curTraceEntry.event = logEventType;
+    curTraceEntry.heap = getHeap();
+
+    // inspect only the top "global" frame to grab globals
+    for (ii = 0; ii < topFrame.scopeCount(); ii++) {
+      sc = topFrame.scope(ii);
+      // According to https://code.google.com/p/v8-wiki/wiki/DebuggerProtocol
+      //
+      // 0: Global
+      // 1: Local
+      // 2: With
+      // 3: Closure
+      // 4: Catch
+      scopeType = sc.details_.details_[0];
+      if (scopeType === 0) { // Global -- to handle global variables
+        scopeObj = sc.details_.details_[1];
+        var globalScopePairs = _.pairs(scopeObj);
+        for (jj = 0; jj < globalScopePairs.length; jj++) {
+          var globalVarname = globalScopePairs[jj][0];
+          var globalVal = globalScopePairs[jj][1];
+          if (!_.has(IGNORE_GLOBAL_VARS, globalVarname)) {
+            curTraceEntry.ordered_globals.push(globalVarname);
+            assert(!_.has(curTraceEntry.globals, globalVarname));
+            curTraceEntry.globals[globalVarname] = encodeObject(globalVal);
+          }
+        }
+      }
+      else if (scopeType === 4) { // Catch -- to handle global exception blocks
+        scopeObj = sc.details_.details_[1];
+
+        var globalCatchScopePairs = _.pairs(scopeObj);
+        for (jj = 0; jj < globalCatchScopePairs.length; jj++) {
+          var globalCatchVarname = globalCatchScopePairs[jj][0];
+          var globalCatchVal = globalCatchScopePairs[jj][1];
+          curTraceEntry.ordered_globals.push(globalCatchVarname);
+          assert(!_.has(curTraceEntry.globals, globalCatchVarname));
+          curTraceEntry.globals[globalCatchVarname] = encodeObject(globalCatchVal);
+        }
+      }
+    }
+
+    for (i = 0;
+         i < all_userscript_frames.length - 1; /* last frame is fake 'top-level' frame */
+         i++) {
+      var traceStackEntry = {};
+
+      f = all_userscript_frames[i];
+      assert(f.func().script().name() == 'userscript.js');
+
+      var isConstructorCall = f.isConstructCall();
+
+      var fid = getCanonicalFrameId(f);
+      //log(i, 'funcname:', f.func().name(), fid);
+
+      traceStackEntry.func_name = f.func().name();
+      traceStackEntry.frame_id = fid;
+
+      if (isConstructorCall) {
+        traceStackEntry.func_name += ' (constructor)';
+      }
+
+      // TODO: this might not still be correct if we have closures
+      traceStackEntry.is_highlighted = (f === topFrame);
+
+
+      // TODO: implement support for closures
+      traceStackEntry.is_parent = false;
+      traceStackEntry.is_zombie = false;
+      traceStackEntry.parent_frame_id_list = [];
+
+      // TODO: need to modify when we have closures with parent and
+      // zombie frames
+      traceStackEntry.unique_hash = traceStackEntry.func_name + '_f' + traceStackEntry.frame_id;
+
+
+      traceStackEntry.ordered_varnames = []; // TODO: how should we sort these?
+      traceStackEntry.encoded_locals = {};
+
+      // encode 'this' if it's defined and doesn't point to the
+      // pseudo-'global' top-level wrapper in the _eval call:
+      var receiver = f.receiver();
+      if (receiver.type_ === 'object') {
+        var realThis = receiver.value_;
+
+        // sometimes you'll get a weirdo receiver that's an empty object
+        // with NO PROTOTYPE ... wtf?!? WTF?!? that's real bad news, so
+        // we don't want to try to run encodeObject on it, since it
+        // blows the hell up. so skip those bad cases
+        var thisProto = Object.getPrototypeOf(realThis);
+        if (thisProto) {
+          traceStackEntry.ordered_varnames.push('this');
+          assert(traceStackEntry.encoded_locals['this'] === undefined);
+          traceStackEntry.encoded_locals['this'] = encodeObject(realThis);
+        }
+      }
+
+      var j, k, v;
+
+      /*
+
+      // This is the OLD DEPRECATED WAY to get args and locals, which is
+      // brittle. instead we just grab elements from the Local scope
+      // dict below. I suppose one "advantage" of this approach is that
+      // you get arguments and locals IN ORDER, so maybe that could be
+      // used later to populate ordered_varnames or something. But it's
+      // brittle :/
+
+      for (j = 0; j < f.argumentCount(); j++) {
+        log('ARG', k, '->', v);
+        k = f.argumentName(j);
+        v = f.argumentValue(j);
+
+        traceStackEntry.ordered_varnames.push(k);
+        assert(traceStackEntry.encoded_locals[k] === undefined);
+        traceStackEntry.encoded_locals[k] = encodeToplevelObject(v);
+      }
+
+      // always encode arguments BEFORE locals, since there's the
+      // possibility that a local and argument with the SAME NAME
+      // exists, in which case the local's value should override the
+      // argument's value. if you mutate a local, apparently the entry
+      // in arguments stays unmodified; interesting
+      /*
+      for (j = 0; j < f.localCount(); j++) {
+        log('LOCAL', k, '->', v);
+        k = f.localName(j);
+        v = f.localValue(j);
+
+        // don't push a duplicate in case it already appeared in
+        // arguments above
+        if (!_.contains(traceStackEntry.ordered_varnames, k)) {
+          traceStackEntry.ordered_varnames.push(k);
+        }
+
+        // will override the earlier entry from arguments if it exists
+        traceStackEntry.encoded_locals[k] = encodeToplevelObject(v);
+      }
+      */
+
+      var nParentScopes = 1;
+      for (ii = 0;
+           ii < f.scopeCount();
+           ii++) {
+        sc = f.scope(ii);
+
+        // According to https://code.google.com/p/v8-wiki/wiki/DebuggerProtocol
+        //
+        // 0: Global
+        // 1: Local
+        // 2: With
+        // 3: Closure
+        // 4: Catch
+        scopeType = sc.details_.details_[0];
+        var e;
+        // DON'T grab globals again since it's redundant
+        if (scopeType === 1 || scopeType === 4) { // Local or Catch (for exceptions)
+          // encode local variables
+
+          scopeObj = sc.details_.details_[1];
+          assert(_.isObject(scopeObj));
+          var localScopePairs = _.pairs(scopeObj);
+          for (jj = 0; jj < localScopePairs.length; jj++) {
+            e = localScopePairs[jj];
+            traceStackEntry.ordered_varnames.push(e[0]);
+            assert(!_.has(traceStackEntry.encoded_locals, e[0]));
+            traceStackEntry.encoded_locals[e[0]] = encodeObject(e[1]);
+          }
+        } else if (scopeType === 2 || scopeType === 3) { // With, Closure
+          // poor person's closure display ... simply INLINE closure
+          // variables into this frame, since that's what v8 provides us.
+          // not as great as drawing real environment diagrams, but
+          // whatevers ...
+          //
+          // as far as i can tell, v8 exposes scope objects, so i can get
+          // all the closure vars. but it doesn't tie those scopes to specific
+          // function call frames :(
+          scopeObj = sc.details_.details_[1];
+          assert(_.isObject(scopeObj));
+          var parentScopePairs = _.pairs(scopeObj);
+          for (jj = 0; jj < parentScopePairs.length; jj++) {
+            e = parentScopePairs[jj];
+            if (nParentScopes > 1) {
+              k = 'parent' + nParentScopes + ':' + e[0];
+            } else {
+              k = 'parent:' + e[0];
+            }
+            traceStackEntry.ordered_varnames.push(k);
+            assert(!_.has(traceStackEntry.encoded_locals, k));
+            traceStackEntry.encoded_locals[k] = encodeObject(e[1]);
+          }
+
+          nParentScopes++;
+        } else {
+          assert(scopeType === 0);
+        }
+      }
+
+      if (f.isAtReturn()) {
+        // constructors implicitly return 'this'
+        var retval = isConstructorCall ? receiver : f.returnValue();
+        traceStackEntry.ordered_varnames.push('__return__');
+        traceStackEntry.encoded_locals.__return__ = encodeToplevelObject(retval);
+      }
+
+      // push to front so that the stack grows 'downwards'
+      curTraceEntry.stack_to_render.unshift(traceStackEntry);
+    }
+
+
+    // check whether the top frame is currently returning, and if so,
+    // update frameIdCalls. it's VERY IMPORTANT to do this update at
+    // the very end, or else getCanonicalFrameId() for this iteration
+    // will return the wrong number.
+    if (topIsReturn) {
+      var s = String(topFrame.details_.frameId());
+      if (frameIdCalls[s] === undefined) {
+        frameIdCalls[s] = 1;
+      }
+      else {
+        frameIdCalls[s] += 1;
+      }
+    }
+
+    curTrace.push(curTraceEntry);
+  }
+
+  // do this at the VERY END of this function, or else weird stuff happens
+  if (curTrace.length >= MAX_EXECUTED_LINES) {
+    curTrace.push({event: 'instruction_limit_reached',
+                   exception_msg: '(stopped after ' + MAX_EXECUTED_LINES + ' steps to prevent possible infinite loop)'});
+
+    finalize();
+    // GET OUTTA HERE so that the user's script doesn't keep infinite looping
+    process.exit();
+  } else {
+    assert(stepType !== undefined);
+    execState.prepareStep(stepType); // set debugger to stop at next step
+  }
+}
+
+
+// for testing
+function simpleListener(event, execState, eventData, data) {
+  var stepType, i, n;
+  var ii, jj, sc, scopeType, scopeObj;
+  var f;
+
+  // TODO: catch CompileError and maybe other events too
+  if (event !== debug.DebugEvent.Break && event !== debug.DebugEvent.Exception) {
+    return;
+  }
+
+  var isException = (event === debug.DebugEvent.Exception);
+
+  var script   = eventData.func().script().name();
+  var line     = eventData.sourceLine() + 1;
+  var col      = eventData.sourceColumn();
+  assert(line >= 2);
+  line -= 2; // to account for wrapUserscript() adding extra lines
+
+  log(script, line, col, isException);
+
+  // if what we're currently executing isn't inside of userscript.js,
+  // then PUNT, since we're probably in the first line of console.log()
+  // or some other utility function
+  if (script !== 'userscript.js') {
+    execState.prepareStep(debug.StepAction.StepOut);
+  } else {
+    execState.prepareStep(debug.StepAction.StepIn);
+  }
+}
+
+
+assert(argv._.length <= 1);
+var cod;
+if (argv._.length === 1) {
+  var FN = argv._[0];
+  // trim trailing newlines so that nothing dangles off of the end
+  cod = String(fs.readFileSync(FN)).rtrim();
+} else {
+  assert(argv._.length === 0);
+  // take a string from the command line, trimming trailing newlines
+  cod = argv.code.rtrim();
+}
+
+var isTypescript = false;
+var sm = require('source-map');
+
+var originalTsCod;
+
+if (argv.typescript) {
+  isTypescript = true;
+  originalTsCod = cod; // stash this away!
+  var tscCompilerOutput = typescriptCompile(cod);
+  //console.log(tscCompilerOutput);
+
+  var tsSourceMap, compiledJsCod;
+  tscCompilerOutput.outputs.forEach(function(e, i) {
+    if (e.name === 'file.js.map') {
+      tsSourceMap = new sm.SourceMapConsumer(e.text);
+    } else if (e.name === 'file.js') {
+      compiledJsCod = e.text;
+    }
+  });
+
+  // if there are any errors, then handle them here, create a trace, and
+  // bail out before executing!
+  if (tscCompilerOutput.errors.length > 0) {
+    // right now just grab and display the first error
+    // TODO: handle displaying multiple errors
+
+    var firstErr = tscCompilerOutput.errors[0];
+
+    var errorTraceEntry = {};
+    errorTraceEntry.event = 'uncaught_exception';
+
+    errorTraceEntry.exception_msg = firstErr.msg;
+    errorTraceEntry.line = firstErr.line;
+    curTrace.push(errorTraceEntry);
+    finalize();
+    process.exit(); // bail out early!!!
+  } else {
+    // strip off the final line, which should say something like:
+    //   '//# sourceMappingURL=file.js.map'
+    // since that screws up line numbers when executing, and looks ugly too
+    var idx = compiledJsCod.indexOf('//# sourceMappingURL=file.js.map');
+    assert(idx >= 0);
+    cod = compiledJsCod.substr(0, idx-1);
+  }
+}
+
+assert(cod);
+var allCodLines = cod.split('\n');
+
+var wrappedCod = wrapUserscript(cod);
+
+try {
+  redirectStdout();
+  debug.setListener(listener);
+  debug.setBreakOnException(); // for exception handling
+  //debug.setBreakOnUncaughtException(); // doesn't seem to do anything :/
+
+  _eval(wrappedCod, 'userscript.js', {} /* scope */, true /* includeGlobals */);
+}
+catch (e) {
+  // for some reason, the node debugger doesn't allow us to keep going
+  // after an uncaught exception to, say, execute 'finally' clauses.
+  if (curTrace.length > 0) {
+    // do a NOP for now ... it's weird to issue an uncaught_exception since
+    // that's usually reserved for syntax errors
+    /*
+    var lastEntry = curTrace[curTrace.length - 1];
+    lastEntry.event = 'exception';
+    lastEntry.exception_msg = String(e);
+    lastEntry.exception_msg += "\n(Uncaught Exception: execution ended due to current limits of\nthis visualizer. 'finally' blocks and other code might not be run.)";
+    lastEntry.line = 0;
+    */
+  } else {
+    // likely a compile error since nothing executed yet; trace is empty
+
+    var originalErrorMsg = e.toString();
+
+    var errorTraceEntry = {};
+    errorTraceEntry.event = 'uncaught_exception';
+
+    // OK now try to parse the user's original code using esprima, not
+    // node's compiler/parser, since esprima gives precise line/column
+    // numbers for errors while node doesn't.
+    //
+    // the main caveat here is that the error messages might be slightly
+    // different, and also out of sync, since we're using a different
+    // parser. so beware!!!
+
+    var hasEsprimaErr = false;
+
+    try {
+      esprima.parse(cod);
+    }
+    catch (esprimaErr) {
+      hasEsprimaErr = true;
+      errorTraceEntry.exception_msg = esprimaErr.description;
+      errorTraceEntry.line = esprimaErr.lineNumber;
+      errorTraceEntry.col = esprimaErr.column;
+    }
+
+    if (!hasEsprimaErr) {
+      // crap, esprima didn't find a parse error, so just go with
+      // originalErrorMsg and throw up our hands since we can't pinpoint
+      // the location of the error.
+      errorTraceEntry.exception_msg = originalErrorMsg + "\n(sorry, tool can't find the line number)";
+    }
+
+    curTrace.push(errorTraceEntry);
+  }
+}
+finally {
+  finalize();
+}
+
+function finalize() {
+  resetStdout(); // so that we can print to stdout again!
+
+  // do some postprocessing to delete the last entry if it's a 'return'
+  // and there's nothing on the stack
+  if (curTrace.length > 0) {
+    var lastEntry = _.last(curTrace);
+    if (lastEntry.event === 'return' && _.isEmpty(lastEntry.stack_to_render.length)) {
+      curTrace.pop();
+    }
+  }
+
+  // very important to display the ORIGINAL TypeScript code in the
+  // trace, not the auto-generated JS code
+  var blob = {code: isTypescript ? originalTsCod : cod, trace: curTrace};
+  if (argv.jsfile) {
+    fs.writeFileSync(argv.jsfile, 'var trace = ' + JSON.stringify(blob) + ';\n');
+    log('Wrote trace to', argv.jsfile);
+  } else if (argv.jsondump) {
+    console.log(JSON.stringify(blob));
+  } else if (argv.prettydump) {
+    console.log(util.inspect(blob, {depth: null}));
+  }
+}
+
diff --git a/v4-cokapi/backends/javascript/tests/assert-fail-exception.golden b/v4-cokapi/backends/javascript/tests/assert-fail-exception.golden
new file mode 100644
index 000000000..a1364e773
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/assert-fail-exception.golden
@@ -0,0 +1,432 @@
+{ code: 'var assert = require(\'assert\');\n\nassert(true);\nassert(true);\nassert(false); // should fail here with an error message\nassert(true);\nassert(true);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { assert: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'assert' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { assert: [ 'REF', 1 ] },
+       ordered_globals: [ 'assert' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'ok',
+             'function ok(value, message) {\n  if (!!!value) fail(value, true, message, \'==\', assert.ok);\n}',
+             [ [ 'AssertionError', [ 'REF', 2 ] ],
+               [ 'fail', [ 'REF', 5 ] ],
+               [ 'ok', [ 'REF', 1 ] ],
+               [ 'equal', [ 'REF', 6 ] ],
+               [ 'notEqual', [ 'REF', 7 ] ],
+               [ 'deepEqual', [ 'REF', 8 ] ],
+               [ 'notDeepEqual', [ 'REF', 9 ] ],
+               [ 'strictEqual', [ 'REF', 10 ] ],
+               [ 'notStrictEqual', [ 'REF', 11 ] ],
+               [ 'throws', [ 'REF', 12 ] ],
+               [ 'doesNotThrow', [ 'REF', 13 ] ],
+               [ 'ifError', [ 'REF', 14 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'AssertionError',
+             'function AssertionError(options) {\n  this.name = \'AssertionError\';\n  this.actual = options.actual;\n  this.expected = options.expected;\n  this.operator = options.operator;\n  this.message = options.message || getMessage(this);\n  var stackStartFunction = options.stackStartFunction || fail;\n  Error.captureStackTrace(this, stackStartFunction);\n}',
+             [ [ 'super_', [ 'REF', 3 ] ] ],
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'Error',
+             'function Error() { [native code] }',
+             [ [ 'captureStackTrace', [ 'REF', 4 ] ],
+               [ 'stackTraceLimit', 10 ] ],
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             'captureStackTrace',
+             'function captureStackTrace() { [native code] }',
+             null,
+             null ],
+          '5': 
+           [ 'JS_FUNCTION',
+             'fail',
+             'function fail(actual, expected, message, operator, stackStartFunction) {\n  throw new assert.AssertionError({\n    message: message,\n    actual: actual,\n    expected: expected,\n    operator: operator,\n    stackStartFunction: stackStartFunction\n  });\n}',
+             null,
+             null ],
+          '6': 
+           [ 'JS_FUNCTION',
+             'equal',
+             'function equal(actual, expected, message) {\n  if (actual != expected) fail(actual, expected, message, \'==\', assert.equal);\n}',
+             null,
+             null ],
+          '7': 
+           [ 'JS_FUNCTION',
+             'notEqual',
+             'function notEqual(actual, expected, message) {\n  if (actual == expected) {\n    fail(actual, expected, message, \'!=\', assert.notEqual);\n  }\n}',
+             null,
+             null ],
+          '8': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(actual, expected, message) {\n  if (!_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'deepEqual\', assert.deepEqual);\n  }\n}',
+             null,
+             null ],
+          '9': 
+           [ 'JS_FUNCTION',
+             'notDeepEqual',
+             'function notDeepEqual(actual, expected, message) {\n  if (_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'notDeepEqual\', assert.notDeepEqual);\n  }\n}',
+             null,
+             null ],
+          '10': 
+           [ 'JS_FUNCTION',
+             'strictEqual',
+             'function strictEqual(actual, expected, message) {\n  if (actual !== expected) {\n    fail(actual, expected, message, \'===\', assert.strictEqual);\n  }\n}',
+             null,
+             null ],
+          '11': 
+           [ 'JS_FUNCTION',
+             'notStrictEqual',
+             'function notStrictEqual(actual, expected, message) {\n  if (actual === expected) {\n    fail(actual, expected, message, \'!==\', assert.notStrictEqual);\n  }\n}',
+             null,
+             null ],
+          '12': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/error, /*optional*/message) {\n  _throws.apply(this, [true].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '13': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/message) {\n  _throws.apply(this, [false].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '14': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (err) { if (err) {throw err;}}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { assert: [ 'REF', 1 ] },
+       ordered_globals: [ 'assert' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'ok',
+             'function ok(value, message) {\n  if (!!!value) fail(value, true, message, \'==\', assert.ok);\n}',
+             [ [ 'AssertionError', [ 'REF', 2 ] ],
+               [ 'fail', [ 'REF', 5 ] ],
+               [ 'ok', [ 'REF', 1 ] ],
+               [ 'equal', [ 'REF', 6 ] ],
+               [ 'notEqual', [ 'REF', 7 ] ],
+               [ 'deepEqual', [ 'REF', 8 ] ],
+               [ 'notDeepEqual', [ 'REF', 9 ] ],
+               [ 'strictEqual', [ 'REF', 10 ] ],
+               [ 'notStrictEqual', [ 'REF', 11 ] ],
+               [ 'throws', [ 'REF', 12 ] ],
+               [ 'doesNotThrow', [ 'REF', 13 ] ],
+               [ 'ifError', [ 'REF', 14 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'AssertionError',
+             'function AssertionError(options) {\n  this.name = \'AssertionError\';\n  this.actual = options.actual;\n  this.expected = options.expected;\n  this.operator = options.operator;\n  this.message = options.message || getMessage(this);\n  var stackStartFunction = options.stackStartFunction || fail;\n  Error.captureStackTrace(this, stackStartFunction);\n}',
+             [ [ 'super_', [ 'REF', 3 ] ] ],
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'Error',
+             'function Error() { [native code] }',
+             [ [ 'captureStackTrace', [ 'REF', 4 ] ],
+               [ 'stackTraceLimit', 10 ] ],
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             'captureStackTrace',
+             'function captureStackTrace() { [native code] }',
+             null,
+             null ],
+          '5': 
+           [ 'JS_FUNCTION',
+             'fail',
+             'function fail(actual, expected, message, operator, stackStartFunction) {\n  throw new assert.AssertionError({\n    message: message,\n    actual: actual,\n    expected: expected,\n    operator: operator,\n    stackStartFunction: stackStartFunction\n  });\n}',
+             null,
+             null ],
+          '6': 
+           [ 'JS_FUNCTION',
+             'equal',
+             'function equal(actual, expected, message) {\n  if (actual != expected) fail(actual, expected, message, \'==\', assert.equal);\n}',
+             null,
+             null ],
+          '7': 
+           [ 'JS_FUNCTION',
+             'notEqual',
+             'function notEqual(actual, expected, message) {\n  if (actual == expected) {\n    fail(actual, expected, message, \'!=\', assert.notEqual);\n  }\n}',
+             null,
+             null ],
+          '8': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(actual, expected, message) {\n  if (!_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'deepEqual\', assert.deepEqual);\n  }\n}',
+             null,
+             null ],
+          '9': 
+           [ 'JS_FUNCTION',
+             'notDeepEqual',
+             'function notDeepEqual(actual, expected, message) {\n  if (_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'notDeepEqual\', assert.notDeepEqual);\n  }\n}',
+             null,
+             null ],
+          '10': 
+           [ 'JS_FUNCTION',
+             'strictEqual',
+             'function strictEqual(actual, expected, message) {\n  if (actual !== expected) {\n    fail(actual, expected, message, \'===\', assert.strictEqual);\n  }\n}',
+             null,
+             null ],
+          '11': 
+           [ 'JS_FUNCTION',
+             'notStrictEqual',
+             'function notStrictEqual(actual, expected, message) {\n  if (actual === expected) {\n    fail(actual, expected, message, \'!==\', assert.notStrictEqual);\n  }\n}',
+             null,
+             null ],
+          '12': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/error, /*optional*/message) {\n  _throws.apply(this, [true].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '13': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/message) {\n  _throws.apply(this, [false].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '14': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (err) { if (err) {throw err;}}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { assert: [ 'REF', 1 ] },
+       ordered_globals: [ 'assert' ],
+       line: 5,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'ok',
+             'function ok(value, message) {\n  if (!!!value) fail(value, true, message, \'==\', assert.ok);\n}',
+             [ [ 'AssertionError', [ 'REF', 2 ] ],
+               [ 'fail', [ 'REF', 5 ] ],
+               [ 'ok', [ 'REF', 1 ] ],
+               [ 'equal', [ 'REF', 6 ] ],
+               [ 'notEqual', [ 'REF', 7 ] ],
+               [ 'deepEqual', [ 'REF', 8 ] ],
+               [ 'notDeepEqual', [ 'REF', 9 ] ],
+               [ 'strictEqual', [ 'REF', 10 ] ],
+               [ 'notStrictEqual', [ 'REF', 11 ] ],
+               [ 'throws', [ 'REF', 12 ] ],
+               [ 'doesNotThrow', [ 'REF', 13 ] ],
+               [ 'ifError', [ 'REF', 14 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'AssertionError',
+             'function AssertionError(options) {\n  this.name = \'AssertionError\';\n  this.actual = options.actual;\n  this.expected = options.expected;\n  this.operator = options.operator;\n  this.message = options.message || getMessage(this);\n  var stackStartFunction = options.stackStartFunction || fail;\n  Error.captureStackTrace(this, stackStartFunction);\n}',
+             [ [ 'super_', [ 'REF', 3 ] ] ],
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'Error',
+             'function Error() { [native code] }',
+             [ [ 'captureStackTrace', [ 'REF', 4 ] ],
+               [ 'stackTraceLimit', 10 ] ],
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             'captureStackTrace',
+             'function captureStackTrace() { [native code] }',
+             null,
+             null ],
+          '5': 
+           [ 'JS_FUNCTION',
+             'fail',
+             'function fail(actual, expected, message, operator, stackStartFunction) {\n  throw new assert.AssertionError({\n    message: message,\n    actual: actual,\n    expected: expected,\n    operator: operator,\n    stackStartFunction: stackStartFunction\n  });\n}',
+             null,
+             null ],
+          '6': 
+           [ 'JS_FUNCTION',
+             'equal',
+             'function equal(actual, expected, message) {\n  if (actual != expected) fail(actual, expected, message, \'==\', assert.equal);\n}',
+             null,
+             null ],
+          '7': 
+           [ 'JS_FUNCTION',
+             'notEqual',
+             'function notEqual(actual, expected, message) {\n  if (actual == expected) {\n    fail(actual, expected, message, \'!=\', assert.notEqual);\n  }\n}',
+             null,
+             null ],
+          '8': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(actual, expected, message) {\n  if (!_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'deepEqual\', assert.deepEqual);\n  }\n}',
+             null,
+             null ],
+          '9': 
+           [ 'JS_FUNCTION',
+             'notDeepEqual',
+             'function notDeepEqual(actual, expected, message) {\n  if (_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'notDeepEqual\', assert.notDeepEqual);\n  }\n}',
+             null,
+             null ],
+          '10': 
+           [ 'JS_FUNCTION',
+             'strictEqual',
+             'function strictEqual(actual, expected, message) {\n  if (actual !== expected) {\n    fail(actual, expected, message, \'===\', assert.strictEqual);\n  }\n}',
+             null,
+             null ],
+          '11': 
+           [ 'JS_FUNCTION',
+             'notStrictEqual',
+             'function notStrictEqual(actual, expected, message) {\n  if (actual === expected) {\n    fail(actual, expected, message, \'!==\', assert.notStrictEqual);\n  }\n}',
+             null,
+             null ],
+          '12': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/error, /*optional*/message) {\n  _throws.apply(this, [true].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '13': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/message) {\n  _throws.apply(this, [false].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '14': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (err) { if (err) {throw err;}}',
+             null,
+             null ] } },
+     { exception_msg: 'AssertionError: false == true',
+       stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { assert: [ 'REF', 1 ] },
+       ordered_globals: [ 'assert' ],
+       line: 5,
+       col: 0,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'ok',
+             'function ok(value, message) {\n  if (!!!value) fail(value, true, message, \'==\', assert.ok);\n}',
+             [ [ 'AssertionError', [ 'REF', 2 ] ],
+               [ 'fail', [ 'REF', 5 ] ],
+               [ 'ok', [ 'REF', 1 ] ],
+               [ 'equal', [ 'REF', 6 ] ],
+               [ 'notEqual', [ 'REF', 7 ] ],
+               [ 'deepEqual', [ 'REF', 8 ] ],
+               [ 'notDeepEqual', [ 'REF', 9 ] ],
+               [ 'strictEqual', [ 'REF', 10 ] ],
+               [ 'notStrictEqual', [ 'REF', 11 ] ],
+               [ 'throws', [ 'REF', 12 ] ],
+               [ 'doesNotThrow', [ 'REF', 13 ] ],
+               [ 'ifError', [ 'REF', 14 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'AssertionError',
+             'function AssertionError(options) {\n  this.name = \'AssertionError\';\n  this.actual = options.actual;\n  this.expected = options.expected;\n  this.operator = options.operator;\n  this.message = options.message || getMessage(this);\n  var stackStartFunction = options.stackStartFunction || fail;\n  Error.captureStackTrace(this, stackStartFunction);\n}',
+             [ [ 'super_', [ 'REF', 3 ] ] ],
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'Error',
+             'function Error() { [native code] }',
+             [ [ 'captureStackTrace', [ 'REF', 4 ] ],
+               [ 'stackTraceLimit', 10 ] ],
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             'captureStackTrace',
+             'function captureStackTrace() { [native code] }',
+             null,
+             null ],
+          '5': 
+           [ 'JS_FUNCTION',
+             'fail',
+             'function fail(actual, expected, message, operator, stackStartFunction) {\n  throw new assert.AssertionError({\n    message: message,\n    actual: actual,\n    expected: expected,\n    operator: operator,\n    stackStartFunction: stackStartFunction\n  });\n}',
+             null,
+             null ],
+          '6': 
+           [ 'JS_FUNCTION',
+             'equal',
+             'function equal(actual, expected, message) {\n  if (actual != expected) fail(actual, expected, message, \'==\', assert.equal);\n}',
+             null,
+             null ],
+          '7': 
+           [ 'JS_FUNCTION',
+             'notEqual',
+             'function notEqual(actual, expected, message) {\n  if (actual == expected) {\n    fail(actual, expected, message, \'!=\', assert.notEqual);\n  }\n}',
+             null,
+             null ],
+          '8': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(actual, expected, message) {\n  if (!_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'deepEqual\', assert.deepEqual);\n  }\n}',
+             null,
+             null ],
+          '9': 
+           [ 'JS_FUNCTION',
+             'notDeepEqual',
+             'function notDeepEqual(actual, expected, message) {\n  if (_deepEqual(actual, expected)) {\n    fail(actual, expected, message, \'notDeepEqual\', assert.notDeepEqual);\n  }\n}',
+             null,
+             null ],
+          '10': 
+           [ 'JS_FUNCTION',
+             'strictEqual',
+             'function strictEqual(actual, expected, message) {\n  if (actual !== expected) {\n    fail(actual, expected, message, \'===\', assert.strictEqual);\n  }\n}',
+             null,
+             null ],
+          '11': 
+           [ 'JS_FUNCTION',
+             'notStrictEqual',
+             'function notStrictEqual(actual, expected, message) {\n  if (actual === expected) {\n    fail(actual, expected, message, \'!==\', assert.notStrictEqual);\n  }\n}',
+             null,
+             null ],
+          '12': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/error, /*optional*/message) {\n  _throws.apply(this, [true].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '13': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (block, /*optional*/message) {\n  _throws.apply(this, [false].concat(pSlice.call(arguments)));\n}',
+             null,
+             null ],
+          '14': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (err) { if (err) {throw err;}}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/assert-fail-exception.js b/v4-cokapi/backends/javascript/tests/assert-fail-exception.js
new file mode 100644
index 000000000..1d369b460
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/assert-fail-exception.js
@@ -0,0 +1,7 @@
+var assert = require('assert');
+
+assert(true);
+assert(true);
+assert(false); // should fail here with an error message
+assert(true);
+assert(true);
diff --git a/v4-cokapi/backends/javascript/tests/basic-funcs.golden b/v4-cokapi/backends/javascript/tests/basic-funcs.golden
new file mode 100644
index 000000000..c46a28642
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/basic-funcs.golden
@@ -0,0 +1,1722 @@
+{ code: 'var global_x = 5;\nvar global_y = 10;\n\nvar foo = function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}\n\nfunction bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}\n\nfor (var i=0; i<3; i++) {\n  foo(i)\n}',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          global_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          foo: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          bar: [ 'REF', 1 ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          foo: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          bar: [ 'REF', 1 ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          bar: [ 'REF', 1 ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 19,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 20,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 5,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 9,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 11,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } },
+          { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'i', 'obj_lst' ],
+            encoded_locals: { i: 0, obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 16,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } },
+          { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'i', 'obj_lst', '__return__' ],
+            encoded_locals: 
+             { i: 0,
+               obj_lst: [ 'REF', 3 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 16,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 0, [ 'REF', 4 ], [ 'REF', 6 ] ],
+          '4': [ 'INSTANCE', '', [ 'foo', 1 ], [ 'poop', [ 'REF', 5 ] ] ],
+          '5': [ 'LIST', 1, 2, 3 ],
+          '6': [ 'INSTANCE', '', [ 'bar', 2 ] ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f2',
+            ordered_varnames: 
+             [ 'i',
+               'local_x',
+               'local_y',
+               'local_z',
+               'local_w',
+               'local_q',
+               '__return__' ],
+            encoded_locals: 
+             { i: 0,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ],
+               __return__: 1764 } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 12,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 0 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 19,
+       col: 19,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 20,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 5,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 9,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 11,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } },
+          { func_name: 'bar',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f5',
+            ordered_varnames: [ 'i', 'obj_lst' ],
+            encoded_locals: { i: 1, obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 16,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } },
+          { func_name: 'bar',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f5',
+            ordered_varnames: [ 'i', 'obj_lst', '__return__' ],
+            encoded_locals: 
+             { i: 1,
+               obj_lst: [ 'REF', 7 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 16,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ],
+          '7': [ 'LIST', 1, [ 'REF', 8 ], [ 'REF', 10 ] ],
+          '8': [ 'INSTANCE', '', [ 'foo', 2 ], [ 'poop', [ 'REF', 9 ] ] ],
+          '9': [ 'LIST', 1, 2, 3 ],
+          '10': [ 'INSTANCE', '', [ 'bar', 3 ] ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: 
+             [ 'i',
+               'local_x',
+               'local_y',
+               'local_z',
+               'local_w',
+               'local_q',
+               '__return__' ],
+            encoded_locals: 
+             { i: 1,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ],
+               __return__: 1764 } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 12,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 1 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 19,
+       col: 19,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 20,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 5,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 9,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 11,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } },
+          { func_name: 'bar',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f7',
+            ordered_varnames: [ 'i', 'obj_lst' ],
+            encoded_locals: { i: 2, obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 16,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } },
+          { func_name: 'bar',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f7',
+            ordered_varnames: [ 'i', 'obj_lst', '__return__' ],
+            encoded_locals: 
+             { i: 2,
+               obj_lst: [ 'REF', 11 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 16,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ],
+          '11': [ 'LIST', 2, [ 'REF', 12 ], [ 'REF', 14 ] ],
+          '12': [ 'INSTANCE', '', [ 'foo', 3 ], [ 'poop', [ 'REF', 13 ] ] ],
+          '13': [ 'LIST', 1, 2, 3 ],
+          '14': [ 'INSTANCE', '', [ 'bar', 4 ] ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'i', 'local_x', 'local_y', 'local_z', 'local_w', 'local_q' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ] } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: 
+             [ 'i',
+               'local_x',
+               'local_y',
+               'local_z',
+               'local_w',
+               'local_q',
+               '__return__' ],
+            encoded_locals: 
+             { i: 2,
+               local_x: 42,
+               local_y: 'hello world',
+               local_z: [ 'JS_SPECIAL_VAL', 'true' ],
+               local_w: [ 'JS_SPECIAL_VAL', 'false' ],
+               local_q: [ 'JS_SPECIAL_VAL', 'null' ],
+               __return__: 1764 } } ],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 12,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 2 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 19,
+       col: 19,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } },
+     { stdout: 'foo: 0\nfoo: 1\nfoo: 4\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { global_x: 5,
+          global_y: 10,
+          foo: [ 'REF', 2 ],
+          bar: [ 'REF', 1 ],
+          i: 3 },
+       ordered_globals: [ 'global_x', 'global_y', 'foo', 'bar', 'i' ],
+       line: 21,
+       col: 1,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'bar',
+             'function bar(i) {\n  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (i) {\n  var local_x = 42;\n  var local_y = "hello world";\n  var local_z = true;\n  var local_w = false;\n  var local_q = null;\n  console.log(\'foo:\', i*i);\n  bar(i);\n  return (local_x * local_x);\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/basic-funcs.js b/v4-cokapi/backends/javascript/tests/basic-funcs.js
new file mode 100644
index 000000000..3d6f13357
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/basic-funcs.js
@@ -0,0 +1,21 @@
+var global_x = 5;
+var global_y = 10;
+
+var foo = function (i) {
+  var local_x = 42;
+  var local_y = "hello world";
+  var local_z = true;
+  var local_w = false;
+  var local_q = null;
+  console.log('foo:', i*i);
+  bar(i);
+  return (local_x * local_x);
+}
+
+function bar(i) {
+  var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];
+}
+
+for (var i=0; i<3; i++) {
+  foo(i)
+}
diff --git a/v4-cokapi/backends/javascript/tests/caught-exception.golden b/v4-cokapi/backends/javascript/tests/caught-exception.golden
new file mode 100644
index 000000000..5ad52987e
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/caught-exception.golden
@@ -0,0 +1,66 @@
+{ code: 'try {\n  var x = 5;\n  throw new Error("oh crapo");\n}\ncatch (e) {\n  console.log(\'hello\');\n  console.log(\'caught\');\n}\nfinally {\n  console.log(\'done\');\n}',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x' ],
+       line: 2,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5 },
+       ordered_globals: [ 'x' ],
+       line: 3,
+       col: 12,
+       event: 'step_line',
+       heap: {} },
+     { exception_msg: 'Error: oh crapo',
+       stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5 },
+       ordered_globals: [ 'x' ],
+       line: 3,
+       col: 8,
+       event: 'exception',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { e: [ 'REF', 1 ], x: 5 },
+       ordered_globals: [ 'e', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'INSTANCE_PPRINT', 'object', 'Error: oh crapo' ] } },
+     { stdout: 'hello\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { e: [ 'REF', 1 ], x: 5 },
+       ordered_globals: [ 'e', 'x' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'INSTANCE_PPRINT', 'object', 'Error: oh crapo' ] } },
+     { stdout: 'hello\ncaught\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5 },
+       ordered_globals: [ 'x' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: 'hello\ncaught\ndone\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5 },
+       ordered_globals: [ 'x' ],
+       line: 11,
+       col: 1,
+       event: 'step_line',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/caught-exception.js b/v4-cokapi/backends/javascript/tests/caught-exception.js
new file mode 100644
index 000000000..8675219ed
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/caught-exception.js
@@ -0,0 +1,11 @@
+try {
+  var x = 5;
+  throw new Error("oh crapo");
+}
+catch (e) {
+  console.log('hello');
+  console.log('caught');
+}
+finally {
+  console.log('done');
+}
diff --git a/v4-cokapi/backends/javascript/tests/closure0.golden b/v4-cokapi/backends/javascript/tests/closure0.golden
new file mode 100644
index 000000000..a19691a63
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/closure0.golden
@@ -0,0 +1,251 @@
+{ code: 'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}\n\nfoo(10);\nfoo(20);\nfoo(30);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 8,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'bar' ],
+            encoded_locals: { y: 10, bar: [ 'REF', 2 ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        return x + y;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'bar', '__return__' ],
+            encoded_locals: 
+             { y: 30,
+               bar: [ 'REF', 2 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        return x + y;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 9,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f3',
+            ordered_varnames: [ 'y', 'bar' ],
+            encoded_locals: { y: 20, bar: [ 'REF', 3 ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        return x + y;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f3',
+            ordered_varnames: [ 'y', 'bar', '__return__' ],
+            encoded_locals: 
+             { y: 60,
+               bar: [ 'REF', 3 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        return x + y;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 10,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f4',
+            ordered_varnames: [ 'y', 'bar' ],
+            encoded_locals: { y: 30, bar: [ 'REF', 4 ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        return x + y;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f4',
+            ordered_varnames: [ 'y', 'bar', '__return__' ],
+            encoded_locals: 
+             { y: 90,
+               bar: [ 'REF', 4 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        return x + y;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 10,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        return x + y;\n    }\n    y *= 3;\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/closure0.js b/v4-cokapi/backends/javascript/tests/closure0.js
new file mode 100644
index 000000000..6607d530b
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/closure0.js
@@ -0,0 +1,10 @@
+function foo(y) {
+    function bar(x) {
+        return x + y;
+    }
+    y *= 3;
+}
+
+foo(10);
+foo(20);
+foo(30);
diff --git a/v4-cokapi/backends/javascript/tests/closure1.golden b/v4-cokapi/backends/javascript/tests/closure1.golden
new file mode 100644
index 000000000..cdfd7a2f0
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/closure1.golden
@@ -0,0 +1,236 @@
+{ code: 'var globalZ = 10;\n\nfunction foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}\n\nvar b = foo(1);\nb(2);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { globalZ: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { globalZ: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 11,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'bar' ],
+            encoded_locals: { y: 1, bar: [ 'REF', 2 ] } } ],
+       globals: 
+        { globalZ: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 8,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'bar', '__return__' ],
+            encoded_locals: { y: 1, bar: [ 'REF', 2 ], __return__: [ 'REF', 2 ] } } ],
+       globals: 
+        { globalZ: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { globalZ: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 12,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'x', 'parent:y' ],
+            encoded_locals: { x: 2, 'parent:y': 1 } } ],
+       globals: { globalZ: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 5,
+       col: 8,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'x', 'parent:y' ],
+            encoded_locals: { x: 2, 'parent:y': 1 } } ],
+       globals: { globalZ: 110, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 6,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'x', 'parent:y', '__return__' ],
+            encoded_locals: { x: 2, 'parent:y': 1, __return__: 113 } } ],
+       globals: { globalZ: 110, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 6,
+       col: 4,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { globalZ: 110, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'globalZ', 'foo', 'b' ],
+       line: 12,
+       col: 5,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }\n    return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '    function bar(x) {\n        globalZ += 100;\n        return x + y + globalZ;\n    }',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/closure1.js b/v4-cokapi/backends/javascript/tests/closure1.js
new file mode 100644
index 000000000..2606e1859
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/closure1.js
@@ -0,0 +1,12 @@
+var globalZ = 10;
+
+function foo(y) {
+    function bar(x) {
+        globalZ += 100;
+        return x + y + globalZ;
+    }
+    return bar;
+}
+
+var b = foo(1);
+b(2);
diff --git a/v4-cokapi/backends/javascript/tests/console-log-objs.golden b/v4-cokapi/backends/javascript/tests/console-log-objs.golden
new file mode 100644
index 000000000..a7ada680f
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/console-log-objs.golden
@@ -0,0 +1,55 @@
+{ code: 'var x = [1,2,3,4,5];\nvar y = {joe: 1, jane: 3};\nconsole.log(x);\nconsole.log(y);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          y: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'y' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'REF', 1 ], y: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'y' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'REF', 1 ], y: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'y' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 1, 2, 3, 4, 5 ],
+          '2': [ 'INSTANCE', '', [ 'joe', 1 ], [ 'jane', 3 ] ] } },
+     { stdout: '[ 1, 2, 3, 4, 5 ]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'REF', 1 ], y: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'y' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 1, 2, 3, 4, 5 ],
+          '2': [ 'INSTANCE', '', [ 'joe', 1 ], [ 'jane', 3 ] ] } },
+     { stdout: '[ 1, 2, 3, 4, 5 ]\n{ joe: 1, jane: 3 }\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'REF', 1 ], y: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'y' ],
+       line: 4,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 1, 2, 3, 4, 5 ],
+          '2': [ 'INSTANCE', '', [ 'joe', 1 ], [ 'jane', 3 ] ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/console-log-objs.js b/v4-cokapi/backends/javascript/tests/console-log-objs.js
new file mode 100644
index 000000000..3d76eb8aa
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/console-log-objs.js
@@ -0,0 +1,4 @@
+var x = [1,2,3,4,5];
+var y = {joe: 1, jane: 3};
+console.log(x);
+console.log(y);
diff --git a/v4-cokapi/backends/javascript/tests/console-log.golden b/v4-cokapi/backends/javascript/tests/console-log.golden
new file mode 100644
index 000000000..fa44cc30a
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/console-log.golden
@@ -0,0 +1,60 @@
+{ code: 'console.log(\'hello\');\nvar i = 5;\nconsole.log(\'foo:\', i*i);\nvar local_q = null;\nconsole.log(\'goodbye\');',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'i', 'local_q' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: 'hello\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'i', 'local_q' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: 'hello\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 5, local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'i', 'local_q' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: 'hello\nfoo: 25\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 5, local_q: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'i', 'local_q' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: 'hello\nfoo: 25\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 5, local_q: [ 'JS_SPECIAL_VAL', 'null' ] },
+       ordered_globals: [ 'i', 'local_q' ],
+       line: 5,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: 'hello\nfoo: 25\ngoodbye\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 5, local_q: [ 'JS_SPECIAL_VAL', 'null' ] },
+       ordered_globals: [ 'i', 'local_q' ],
+       line: 5,
+       col: 23,
+       event: 'step_line',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/console-log.js b/v4-cokapi/backends/javascript/tests/console-log.js
new file mode 100644
index 000000000..09d80d9f9
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/console-log.js
@@ -0,0 +1,5 @@
+console.log('hello');
+var i = 5;
+console.log('foo:', i*i);
+var local_q = null;
+console.log('goodbye');
diff --git a/v4-cokapi/backends/javascript/tests/constructor.golden b/v4-cokapi/backends/javascript/tests/constructor.golden
new file mode 100644
index 000000000..c9b6705ac
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/constructor.golden
@@ -0,0 +1,352 @@
+{ code: 'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}\n\nVector.prototype.plus = function(other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n};\n\nvar v1 = new Vector(1, 2);\nvar v2 = Vector(20, 30); // whoops, forgot \'new\'',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 6,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 10,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 4 ], x: 1, y: 2 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 2,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 4 ], x: 1, y: 2 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 3,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: { this: [ 'REF', 4 ], x: 1, y: 2, __return__: [ 'REF', 4 ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 4 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 11,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector_f3',
+            ordered_varnames: [ 'x', 'y' ],
+            encoded_locals: { x: 20, y: 30 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 4 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2' ],
+       line: 2,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector_f3',
+            ordered_varnames: [ 'x', 'y' ],
+            encoded_locals: { x: 20, y: 30 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 4 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          x: 20 },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'x' ],
+       line: 3,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector_f3',
+            ordered_varnames: [ 'x', 'y', '__return__' ],
+            encoded_locals: { x: 20, y: 30, __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 4 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          x: 20,
+          y: 30 },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'x', 'y' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 4 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          x: 20,
+          y: 30 },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'x', 'y' ],
+       line: 11,
+       col: 48,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/constructor.js b/v4-cokapi/backends/javascript/tests/constructor.js
new file mode 100644
index 000000000..404aa617d
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/constructor.js
@@ -0,0 +1,11 @@
+function Vector(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+Vector.prototype.plus = function(other) {
+  return new Vector(this.x + other.x, this.y + other.y);
+};
+
+var v1 = new Vector(1, 2);
+var v2 = Vector(20, 30); // whoops, forgot 'new'
diff --git a/v4-cokapi/backends/javascript/tests/data-types.golden b/v4-cokapi/backends/javascript/tests/data-types.golden
new file mode 100644
index 000000000..acd1e6b75
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/data-types.golden
@@ -0,0 +1,630 @@
+{ code: 'var intNum = 42;\nvar floatNum = 3.14159;\nvar nanNum = NaN;\nvar infNum = Infinity;\nvar ninfNum = -Infinity;\n\nvar str = "hello world";\n\nvar boolTrue = true;\nvar boolFalse = false;\n\nvar nullVal = null;\nvar undefVal = undefined;\n\nvar lst = [\'a\', \'b\', 3, 4, 5, \'f\'];\n\nvar obj = {name: \'John\', age: 35, hasChildren: true};\n\nvar i = 5;\nvar obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];\n\nobj.name = \'Jane\';',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          floatNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nanNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          infNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          ninfNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          str: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nanNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          infNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          ninfNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          str: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          infNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          ninfNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          str: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          ninfNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          str: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          str: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 5,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 7,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 9,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 10,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 12,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 13,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 15,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'REF', 1 ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 17,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 'a', 'b', 3, 4, 5, 'f' ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'REF', 1 ],
+          obj: [ 'REF', 2 ],
+          i: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 19,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 'a', 'b', 3, 4, 5, 'f' ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'name', 'John' ],
+             [ 'age', 35 ],
+             [ 'hasChildren', [ 'JS_SPECIAL_VAL', 'true' ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'REF', 1 ],
+          obj: [ 'REF', 2 ],
+          i: 5,
+          obj_lst: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 20,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 'a', 'b', 3, 4, 5, 'f' ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'name', 'John' ],
+             [ 'age', 35 ],
+             [ 'hasChildren', [ 'JS_SPECIAL_VAL', 'true' ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'REF', 1 ],
+          obj: [ 'REF', 2 ],
+          i: 5,
+          obj_lst: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 22,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 'a', 'b', 3, 4, 5, 'f' ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'name', 'John' ],
+             [ 'age', 35 ],
+             [ 'hasChildren', [ 'JS_SPECIAL_VAL', 'true' ] ] ],
+          '3': [ 'LIST', 5, [ 'REF', 4 ], [ 'REF', 6 ] ],
+          '4': [ 'INSTANCE', '', [ 'foo', 6 ], [ 'poop', [ 'REF', 5 ] ] ],
+          '5': [ 'LIST', 1, 2, 3 ],
+          '6': [ 'INSTANCE', '', [ 'bar', 7 ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { intNum: 42,
+          floatNum: 3.14159,
+          nanNum: [ 'SPECIAL_FLOAT', 'NaN' ],
+          infNum: [ 'SPECIAL_FLOAT', 'Infinity' ],
+          ninfNum: [ 'SPECIAL_FLOAT', '-Infinity' ],
+          str: 'hello world',
+          boolTrue: [ 'JS_SPECIAL_VAL', 'true' ],
+          boolFalse: [ 'JS_SPECIAL_VAL', 'false' ],
+          nullVal: [ 'JS_SPECIAL_VAL', 'null' ],
+          undefVal: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          lst: [ 'REF', 1 ],
+          obj: [ 'REF', 2 ],
+          i: 5,
+          obj_lst: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'intNum',
+          'floatNum',
+          'nanNum',
+          'infNum',
+          'ninfNum',
+          'str',
+          'boolTrue',
+          'boolFalse',
+          'nullVal',
+          'undefVal',
+          'lst',
+          'obj',
+          'i',
+          'obj_lst' ],
+       line: 22,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': [ 'LIST', 'a', 'b', 3, 4, 5, 'f' ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'name', 'Jane' ],
+             [ 'age', 35 ],
+             [ 'hasChildren', [ 'JS_SPECIAL_VAL', 'true' ] ] ],
+          '3': [ 'LIST', 5, [ 'REF', 4 ], [ 'REF', 6 ] ],
+          '4': [ 'INSTANCE', '', [ 'foo', 6 ], [ 'poop', [ 'REF', 5 ] ] ],
+          '5': [ 'LIST', 1, 2, 3 ],
+          '6': [ 'INSTANCE', '', [ 'bar', 7 ] ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/data-types.js b/v4-cokapi/backends/javascript/tests/data-types.js
new file mode 100644
index 000000000..b31728f03
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/data-types.js
@@ -0,0 +1,22 @@
+var intNum = 42;
+var floatNum = 3.14159;
+var nanNum = NaN;
+var infNum = Infinity;
+var ninfNum = -Infinity;
+
+var str = "hello world";
+
+var boolTrue = true;
+var boolFalse = false;
+
+var nullVal = null;
+var undefVal = undefined;
+
+var lst = ['a', 'b', 3, 4, 5, 'f'];
+
+var obj = {name: 'John', age: 35, hasChildren: true};
+
+var i = 5;
+var obj_lst = [i, {foo: i+1, poop: [1, 2, 3]}, {bar: i+2}];
+
+obj.name = 'Jane';
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-2.3.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-2.3.golden
new file mode 100644
index 000000000..c3deec2e4
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-2.3.golden
@@ -0,0 +1,2515 @@
+{ code: 'var size = 8;\n\nvar board = "";\n\nfor (var y = 0; y < size; y++) {\n  for (var x = 0; x < size; x++) {\n    if ((x + y) % 2 == 0)\n      board += " ";\n    else\n      board += "#";\n  }\n  board += "\\n";\n}\n\nconsole.log(board);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          board: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          x: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          x: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: '',
+          y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          x: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: '', y: 0, x: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: '', y: 0, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: '', y: 0, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' ', y: 0, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' ', y: 0, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' ', y: 0, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' #', y: 0, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' #', y: 0, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' #', y: 0, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # ', y: 0, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # ', y: 0, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # ', y: 0, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # #', y: 0, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # #', y: 0, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # #', y: 0, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # ', y: 0, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # ', y: 0, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # ', y: 0, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # #', y: 0, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # #', y: 0, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # #', y: 0, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # ', y: 0, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # ', y: 0, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # ', y: 0, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #', y: 0, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #', y: 0, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n', y: 0, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n', y: 1, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n', y: 1, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n', y: 1, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n#', y: 1, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n#', y: 1, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n#', y: 1, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# ', y: 1, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# ', y: 1, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# ', y: 1, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# #', y: 1, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# #', y: 1, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# #', y: 1, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # ', y: 1, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # ', y: 1, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # ', y: 1, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # #', y: 1, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # #', y: 1, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # #', y: 1, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # ', y: 1, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # ', y: 1, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # ', y: 1, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # #', y: 1, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # #', y: 1, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # #', y: 1, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # ', y: 1, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # ', y: 1, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n', y: 1, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n', y: 2, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n', y: 2, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n', y: 2, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n ', y: 2, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n ', y: 2, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n ', y: 2, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n #', y: 2, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n #', y: 2, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n #', y: 2, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # ', y: 2, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # ', y: 2, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # ', y: 2, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # #', y: 2, x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # #', y: 2, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # #', y: 2, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # ', y: 2, x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # ', y: 2, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # ', y: 2, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # #', y: 2, x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # #', y: 2, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # #', y: 2, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # ', y: 2, x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # ', y: 2, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # ', y: 2, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #', y: 2, x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #', y: 2, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n', y: 2, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n', y: 3, x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n', y: 3, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n', y: 3, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n#', y: 3, x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n#', y: 3, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n#', y: 3, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n# ', y: 3, x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n# ', y: 3, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { size: 8, board: ' # # # #\n# # # # \n # # # #\n# ', y: 3, x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# #',
+          y: 3,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# #',
+          y: 3,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# #',
+          y: 3,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # ',
+          y: 3,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # ',
+          y: 3,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # ',
+          y: 3,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # #',
+          y: 3,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # #',
+          y: 3,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # #',
+          y: 3,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # ',
+          y: 3,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # ',
+          y: 3,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # ',
+          y: 3,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # #',
+          y: 3,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # #',
+          y: 3,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # #',
+          y: 3,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # ',
+          y: 3,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # ',
+          y: 3,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 3,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 4,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 4,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 4,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n ',
+          y: 4,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n ',
+          y: 4,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n ',
+          y: 4,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n #',
+          y: 4,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n #',
+          y: 4,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n #',
+          y: 4,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # ',
+          y: 4,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # ',
+          y: 4,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # ',
+          y: 4,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # #',
+          y: 4,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # #',
+          y: 4,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # #',
+          y: 4,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # ',
+          y: 4,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # ',
+          y: 4,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # ',
+          y: 4,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # #',
+          y: 4,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # #',
+          y: 4,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # #',
+          y: 4,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # ',
+          y: 4,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # ',
+          y: 4,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # ',
+          y: 4,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #',
+          y: 4,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #',
+          y: 4,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 4,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 5,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 5,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 5,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n#',
+          y: 5,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n#',
+          y: 5,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n#',
+          y: 5,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# ',
+          y: 5,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# ',
+          y: 5,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# ',
+          y: 5,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# #',
+          y: 5,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# #',
+          y: 5,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# #',
+          y: 5,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # ',
+          y: 5,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # ',
+          y: 5,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # ',
+          y: 5,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # #',
+          y: 5,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # #',
+          y: 5,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # #',
+          y: 5,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # ',
+          y: 5,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # ',
+          y: 5,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # ',
+          y: 5,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # #',
+          y: 5,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # #',
+          y: 5,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # #',
+          y: 5,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # ',
+          y: 5,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # ',
+          y: 5,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 5,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 6,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 6,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 6,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n ',
+          y: 6,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n ',
+          y: 6,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n ',
+          y: 6,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n #',
+          y: 6,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n #',
+          y: 6,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n #',
+          y: 6,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # ',
+          y: 6,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # ',
+          y: 6,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # ',
+          y: 6,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # #',
+          y: 6,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # #',
+          y: 6,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # #',
+          y: 6,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # ',
+          y: 6,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # ',
+          y: 6,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # ',
+          y: 6,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # #',
+          y: 6,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # #',
+          y: 6,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # #',
+          y: 6,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # ',
+          y: 6,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # ',
+          y: 6,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # ',
+          y: 6,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #',
+          y: 6,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #',
+          y: 6,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 6,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 7,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 7,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n',
+          y: 7,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n#',
+          y: 7,
+          x: 0 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n#',
+          y: 7,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n#',
+          y: 7,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# ',
+          y: 7,
+          x: 1 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# ',
+          y: 7,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# ',
+          y: 7,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# #',
+          y: 7,
+          x: 2 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# #',
+          y: 7,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# #',
+          y: 7,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # ',
+          y: 7,
+          x: 3 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # ',
+          y: 7,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # ',
+          y: 7,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # #',
+          y: 7,
+          x: 4 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # #',
+          y: 7,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # #',
+          y: 7,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # ',
+          y: 7,
+          x: 5 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # ',
+          y: 7,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # ',
+          y: 7,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 10,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # #',
+          y: 7,
+          x: 6 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # #',
+          y: 7,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # #',
+          y: 7,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 8,
+       col: 6,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # ',
+          y: 7,
+          x: 7 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 6,
+       col: 28,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # ',
+          y: 7,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 7,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 5,
+       col: 26,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 8,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 15,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { size: 8,
+          board: ' # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n # # # #\n# # # # \n',
+          y: 8,
+          x: 8 },
+       ordered_globals: [ 'size', 'board', 'y', 'x' ],
+       line: 15,
+       col: 19,
+       event: 'step_line',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-2.3.js b/v4-cokapi/backends/javascript/tests/eloquentjs-2.3.js
new file mode 100644
index 000000000..7d8274beb
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-2.3.js
@@ -0,0 +1,15 @@
+var size = 8;
+
+var board = "";
+
+for (var y = 0; y < size; y++) {
+  for (var x = 0; x < size; x++) {
+    if ((x + y) % 2 == 0)
+      board += " ";
+    else
+      board += "#";
+  }
+  board += "\n";
+}
+
+console.log(board);
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-3.2.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-3.2.golden
new file mode 100644
index 000000000..23ef2f53c
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-3.2.golden
@@ -0,0 +1,1373 @@
+{ code: 'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}\n\n\nconsole.log(isEven(11));',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 13,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 4,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 6,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 9,
+       col: 11,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 4,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 6,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 9,
+       col: 11,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 4,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 6,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 9,
+       col: 11,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 4,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 6,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 9,
+       col: 11,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 4,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 6,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 9,
+       col: 11,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'isEven',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'isEven',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 4,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'isEven',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 5,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'isEven',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f7',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 1, __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 5,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 5 } },
+          { func_name: 'isEven',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f6',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 3, __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 10,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 7 } },
+          { func_name: 'isEven',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f5',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 5, __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 10,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 9 } },
+          { func_name: 'isEven',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f4',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 7, __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 10,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 11 } },
+          { func_name: 'isEven',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f3',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 9, __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 10,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'isEven',
+       stack_to_render: 
+        [ { func_name: 'isEven',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'isEven_f2',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 11, __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 10,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 13,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } },
+     { stdout: 'false\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { isEven: [ 'REF', 1 ] },
+       ordered_globals: [ 'isEven' ],
+       line: 13,
+       col: 24,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'isEven',
+             'function isEven(n) {\n  if (n == 0)\n    return true;\n  else if (n == 1)\n    return false;\n  else if (n < 0)\n    return isEven(-n);\n  else\n    return isEven(n - 2);\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-3.2.js b/v4-cokapi/backends/javascript/tests/eloquentjs-3.2.js
new file mode 100644
index 000000000..2a7b35e52
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-3.2.js
@@ -0,0 +1,13 @@
+function isEven(n) {
+  if (n == 0)
+    return true;
+  else if (n == 1)
+    return false;
+  else if (n < 0)
+    return isEven(-n);
+  else
+    return isEven(n - 2);
+}
+
+
+console.log(isEven(11));
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.1-min.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1-min.golden
new file mode 100644
index 000000000..41a853029
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1-min.golden
@@ -0,0 +1,498 @@
+{ code: '// minimized version of eloquentjs-4.1.js\nfunction range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}\n\nrange(1, 10);    // print 1\nrange(1, 10, 0); // print 0\nrange(1, 10, 1); // print 1',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 9,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 3,
+       col: 20,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 2 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '2': [ 'LIST' ] } },
+     { stdout: '1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 2 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '2': [ 'LIST' ] } },
+     { stdout: '1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', '__return__' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'REF', 2 ],
+               __return__: [ 'REF', 2 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 6,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '2': [ 'LIST' ] } },
+     { stdout: '1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 10,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f3',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 0,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f3',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 0,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f3',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: { start: 1, end: 10, step: 0, array: [ 'REF', 3 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST' ] } },
+     { stdout: '1\n0\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f3',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: { start: 1, end: 10, step: 0, array: [ 'REF', 3 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST' ] } },
+     { stdout: '1\n0\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f3',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', '__return__' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 0,
+               array: [ 'REF', 3 ],
+               __return__: [ 'REF', 3 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 6,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST' ] } },
+     { stdout: '1\n0\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 11,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '1\n0\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '1\n0\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '1\n0\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 4 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '4': [ 'LIST' ] } },
+     { stdout: '1\n0\n1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 4 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '4': [ 'LIST' ] } },
+     { stdout: '1\n0\n1\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', '__return__' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'REF', 4 ],
+               __return__: [ 'REF', 4 ] } } ],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 6,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ],
+          '4': [ 'LIST' ] } },
+     { stdout: '1\n0\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ] },
+       ordered_globals: [ 'range' ],
+       line: 11,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n  console.log(step);\n  return array;\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.1-min.js b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1-min.js
new file mode 100644
index 000000000..72daf640d
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1-min.js
@@ -0,0 +1,11 @@
+// minimized version of eloquentjs-4.1.js
+function range(start, end, step) {
+  if (step == null) step = 1;
+  var array = [];
+  console.log(step);
+  return array;
+}
+
+range(1, 10);    // print 1
+range(1, 10, 0); // print 0
+range(1, 10, 1); // print 1
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.1.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1.golden
new file mode 100644
index 000000000..0bba86963
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1.golden
@@ -0,0 +1,2198 @@
+{ code: 'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}\n\nfunction sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}\n\nconsole.log(sum(range(1, 10)));\nconsole.log(range(5, 2, -1));',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 22,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 2,
+       col: 20,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'REF', 3 ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST' ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'REF', 3 ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST' ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 1 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST' ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 2 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 2 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 3 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 3 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 4 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 4 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 5 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 5 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 6 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 6 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 7 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 7 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 8 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 8 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 9 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 9 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 10 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 10 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 7,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 11 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 1, end: 10, step: 1, array: [ 'REF', 3 ], i: 11 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f2',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i', '__return__' ],
+            encoded_locals: 
+             { start: 1,
+               end: 10,
+               step: 1,
+               array: [ 'REF', 3 ],
+               i: 11,
+               __return__: [ 'REF', 3 ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 12,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 22,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: 
+             { array: [ 'REF', 3 ],
+               total: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 16,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 0, i: 0 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 0, i: 0 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 1, i: 1 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 1, i: 1 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 3, i: 2 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 3, i: 2 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 6, i: 3 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 6, i: 3 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 10, i: 4 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 10, i: 4 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 15, i: 5 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 15, i: 5 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 21, i: 6 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 21, i: 6 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 28, i: 7 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 28, i: 7 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 36, i: 8 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 36, i: 8 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 45, i: 9 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 45, i: 9 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 18,
+       col: 18,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 55, i: 10 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 17,
+       col: 27,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 55, i: 10 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 19,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: 'sum',
+       stack_to_render: 
+        [ { func_name: 'sum',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'sum_f3',
+            ordered_varnames: [ 'array', 'total', 'i', '__return__' ],
+            encoded_locals: { array: [ 'REF', 3 ], total: 55, i: 10, __return__: 55 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 19,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 22,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 23,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 5,
+               end: 2,
+               step: -1,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 5,
+               end: 2,
+               step: -1,
+               array: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 5,
+               end: 2,
+               step: -1,
+               array: [ 'REF', 4 ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST' ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: 
+             { start: 5,
+               end: 2,
+               step: -1,
+               array: [ 'REF', 4 ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST' ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 5 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 10,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST' ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 4 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 4 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 10,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 3 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 3 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 10,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 2 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4, 3 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 2 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 10,
+       col: 12,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4, 3 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 1 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4, 3, 2 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i' ],
+            encoded_locals: { start: 5, end: 2, step: -1, array: [ 'REF', 4 ], i: 1 } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 12,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4, 3, 2 ] } },
+     { stdout: '55\n',
+       func_name: 'range',
+       stack_to_render: 
+        [ { func_name: 'range',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'range_f4',
+            ordered_varnames: [ 'start', 'end', 'step', 'array', 'i', '__return__' ],
+            encoded_locals: 
+             { start: 5,
+               end: 2,
+               step: -1,
+               array: [ 'REF', 4 ],
+               i: 1,
+               __return__: [ 'REF', 4 ] } } ],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 12,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ],
+          '4': [ 'LIST', 5, 4, 3, 2 ] } },
+     { stdout: '55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 23,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } },
+     { stdout: '55\n[ 5, 4, 3, 2 ]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { range: [ 'REF', 1 ], sum: [ 'REF', 2 ] },
+       ordered_globals: [ 'range', 'sum' ],
+       line: 23,
+       col: 29,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'range',
+             'function range(start, end, step) {\n  if (step == null) step = 1;\n  var array = [];\n\n  if (step > 0) {\n    for (var i = start; i <= end; i += step)\n      array.push(i);\n  } else {\n    for (var i = start; i >= end; i += step)\n      array.push(i);\n  }\n  return array;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'sum',
+             'function sum(array) {\n  var total = 0;\n  for (var i = 0; i < array.length; i++)\n    total += array[i];\n  return total;\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.1.js b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1.js
new file mode 100644
index 000000000..e538a5e64
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.1.js
@@ -0,0 +1,23 @@
+function range(start, end, step) {
+  if (step == null) step = 1;
+  var array = [];
+
+  if (step > 0) {
+    for (var i = start; i <= end; i += step)
+      array.push(i);
+  } else {
+    for (var i = start; i >= end; i += step)
+      array.push(i);
+  }
+  return array;
+}
+
+function sum(array) {
+  var total = 0;
+  for (var i = 0; i < array.length; i++)
+    total += array[i];
+  return total;
+}
+
+console.log(sum(range(1, 10)));
+console.log(range(5, 2, -1));
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.2.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-4.2.golden
new file mode 100644
index 000000000..60485b54a
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.2.golden
@@ -0,0 +1,888 @@
+{ code: 'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}\n\nfunction reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}\n\nconsole.log(reverseArray(["A", "B", "C"]));\n// → ["C", "B", "A"];\nvar arrayValue = [1, 2, 3, 4, 5];\nreverseArrayInPlace(arrayValue);\nconsole.log(arrayValue);\n// → [5, 4, 3, 2, 1]\n\n// Source: Eloquent JavaScript -- Exercise 4.2\n// http://eloquentjavascript.net/code/#4.2',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 17,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: 
+             { array: [ 'REF', 3 ],
+               output: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: 
+             { array: [ 'REF', 3 ],
+               output: [ 'REF', 4 ],
+               i: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: 2 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 4,
+       col: 21,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: 1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: 1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 4,
+       col: 21,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: 0 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C', 'B' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: 0 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 4,
+       col: 21,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C', 'B' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: -1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C', 'B', 'A' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i' ],
+            encoded_locals: { array: [ 'REF', 3 ], output: [ 'REF', 4 ], i: -1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C', 'B', 'A' ] } },
+     { stdout: '',
+       func_name: 'reverseArray',
+       stack_to_render: 
+        [ { func_name: 'reverseArray',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArray_f2',
+            ordered_varnames: [ 'array', 'output', 'i', '__return__' ],
+            encoded_locals: 
+             { array: [ 'REF', 3 ],
+               output: [ 'REF', 4 ],
+               i: -1,
+               __return__: [ 'REF', 4 ] } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 5,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '3': [ 'LIST', 'A', 'B', 'C' ],
+          '4': [ 'LIST', 'C', 'B', 'A' ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 17,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 19,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 20,
+       col: 20,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: 
+             { array: [ 'REF', 5 ],
+               i: 0,
+               old: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 9,
+       col: 22,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: 
+             { array: [ 'REF', 5 ],
+               i: 0,
+               old: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 10,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 0, old: 1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 11,
+       col: 26,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 1, 2, 3, 4, 5 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 0, old: 1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 12,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 2, 3, 4, 5 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 1, old: 1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 9,
+       col: 22,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 2, 3, 4, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 1, old: 1 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 10,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 2, 3, 4, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 1, old: 2 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 11,
+       col: 26,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 2, 3, 4, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 1, old: 2 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 12,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 4, 3, 4, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 2, old: 2 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 9,
+       col: 22,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 4, 3, 2, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 2, old: 2 } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 14,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 4, 3, 2, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: 'reverseArrayInPlace',
+       stack_to_render: 
+        [ { func_name: 'reverseArrayInPlace',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reverseArrayInPlace_f3',
+            ordered_varnames: [ 'array', 'i', 'old', '__return__' ],
+            encoded_locals: { array: [ 'REF', 5 ], i: 2, old: 2, __return__: [ 'REF', 5 ] } } ],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 14,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 4, 3, 2, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 21,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 4, 3, 2, 1 ] } },
+     { stdout: '[ \'C\', \'B\', \'A\' ]\n[ 5, 4, 3, 2, 1 ]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { reverseArray: [ 'REF', 1 ],
+          reverseArrayInPlace: [ 'REF', 2 ],
+          arrayValue: [ 'REF', 5 ] },
+       ordered_globals: [ 'reverseArray', 'reverseArrayInPlace', 'arrayValue' ],
+       line: 25,
+       col: 42,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'reverseArray',
+             'function reverseArray(array) {\n  var output = [];\n  for (var i = array.length - 1; i >= 0; i--)\n    output.push(array[i]);\n  return output;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'reverseArrayInPlace',
+             'function reverseArrayInPlace(array) {\n  for (var i = 0; i < Math.floor(array.length / 2); i++) {\n    var old = array[i];\n    array[i] = array[array.length - 1 - i];\n    array[array.length - 1 - i] = old;\n  }\n  return array;\n}',
+             null,
+             null ],
+          '5': [ 'LIST', 5, 4, 3, 2, 1 ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.2.js b/v4-cokapi/backends/javascript/tests/eloquentjs-4.2.js
new file mode 100644
index 000000000..114572d58
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.2.js
@@ -0,0 +1,25 @@
+function reverseArray(array) {
+  var output = [];
+  for (var i = array.length - 1; i >= 0; i--)
+    output.push(array[i]);
+  return output;
+}
+
+function reverseArrayInPlace(array) {
+  for (var i = 0; i < Math.floor(array.length / 2); i++) {
+    var old = array[i];
+    array[i] = array[array.length - 1 - i];
+    array[array.length - 1 - i] = old;
+  }
+  return array;
+}
+
+console.log(reverseArray(["A", "B", "C"]));
+// → ["C", "B", "A"];
+var arrayValue = [1, 2, 3, 4, 5];
+reverseArrayInPlace(arrayValue);
+console.log(arrayValue);
+// → [5, 4, 3, 2, 1]
+
+// Source: Eloquent JavaScript -- Exercise 4.2
+// http://eloquentjavascript.net/code/#4.2
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.4.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-4.4.golden
new file mode 100644
index 000000000..7a4f8bccd
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.4.golden
@@ -0,0 +1,1932 @@
+{ code: 'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}\n\nvar obj = {here: {is: "an"}, object: 2};\nconsole.log(deepEqual(obj, obj));\n// → true\nconsole.log(deepEqual(obj, {here: 1, object: 2}));\n// → false\nconsole.log(deepEqual(obj, {here: {is: "an"}, object: 2}));\n// → true',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { deepEqual: [ 'REF', 1 ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 22,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 23,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: '',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f2',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 2 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: '',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f2',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 2 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: '',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f2',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 2 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               __return__: [ 'JS_SPECIAL_VAL', 'true' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 23,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 25,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 0,
+               propsInB: 0,
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 0,
+               propsInB: 0,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 11,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 0,
+               prop: 'object' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 13,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 0,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 14,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 15,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f4',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: 1,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f4',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: 1,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f4',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: 1,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f4',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: 1,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 6,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 16,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f3',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 4 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here',
+               __return__: [ 'JS_SPECIAL_VAL', 'false' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 16,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '4': [ 'INSTANCE', '', [ 'here', 1 ], [ 'object', 2 ] ] } },
+     { stdout: 'true\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 25,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 27,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 0,
+               propsInB: 0,
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 0,
+               propsInB: 0,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 11,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 0,
+               prop: 'object' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 13,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 0,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 14,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 15,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 4,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 0,
+               propsInB: 0,
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 10,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 0,
+               propsInB: 0,
+               prop: 'is' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 11,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 0,
+               prop: 'is' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 13,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 0,
+               prop: 'is' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 14,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 1,
+               prop: 'is' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 15,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 1,
+               prop: 'is' } },
+          { func_name: 'deepEqual',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f7',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: 'an',
+               b: 'an',
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 1,
+               prop: 'is' } },
+          { func_name: 'deepEqual',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f7',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: 'an',
+               b: 'an',
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 1,
+               prop: 'is' } },
+          { func_name: 'deepEqual',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f7',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: 'an',
+               b: 'an',
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               __return__: [ 'JS_SPECIAL_VAL', 'true' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 1,
+               prop: 'is' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 19,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'here' } },
+          { func_name: 'deepEqual',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f6',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: [ 'REF', 3 ],
+               b: [ 'REF', 6 ],
+               propsInA: 1,
+               propsInB: 1,
+               prop: 'is',
+               __return__: [ 'JS_SPECIAL_VAL', 'true' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 19,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 1,
+               prop: 'object' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 14,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 2,
+               prop: 'object' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 15,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 2,
+               prop: 'object' } },
+          { func_name: 'deepEqual',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f8',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: 2,
+               b: 2,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 2,
+               prop: 'object' } },
+          { func_name: 'deepEqual',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f8',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: 2,
+               b: 2,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 2,
+               prop: 'object' } },
+          { func_name: 'deepEqual',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f8',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: 2,
+               b: 2,
+               propsInA: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               propsInB: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               prop: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               __return__: [ 'JS_SPECIAL_VAL', 'true' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 2,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 2,
+               prop: 'object' } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 19,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: 'deepEqual',
+       stack_to_render: 
+        [ { func_name: 'deepEqual',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'deepEqual_f5',
+            ordered_varnames: [ 'a', 'b', 'propsInA', 'propsInB', 'prop', '__return__' ],
+            encoded_locals: 
+             { a: [ 'REF', 2 ],
+               b: [ 'REF', 5 ],
+               propsInA: 2,
+               propsInB: 2,
+               prop: 'object',
+               __return__: [ 'JS_SPECIAL_VAL', 'true' ] } } ],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 19,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ],
+          '5': [ 'INSTANCE', '', [ 'here', [ 'REF', 6 ] ], [ 'object', 2 ] ],
+          '6': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 27,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } },
+     { stdout: 'true\nfalse\ntrue\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { deepEqual: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'deepEqual', 'obj' ],
+       line: 28,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'deepEqual',
+             'function deepEqual(a, b) {\n  if (a === b) return true;\n  \n  if (a == null || typeof a != "object" ||\n      b == null || typeof b != "object")\n    return false;\n  \n  var propsInA = 0, propsInB = 0;\n\n  for (var prop in a)\n    propsInA += 1;\n\n  for (var prop in b) {\n    propsInB += 1;\n    if (!(prop in a) || !deepEqual(a[prop], b[prop]))\n      return false;\n  }\n\n  return propsInA == propsInB;\n}',
+             null,
+             null ],
+          '2': [ 'INSTANCE', '', [ 'here', [ 'REF', 3 ] ], [ 'object', 2 ] ],
+          '3': [ 'INSTANCE', '', [ 'is', 'an' ] ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-4.4.js b/v4-cokapi/backends/javascript/tests/eloquentjs-4.4.js
new file mode 100644
index 000000000..b26c75acb
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-4.4.js
@@ -0,0 +1,28 @@
+function deepEqual(a, b) {
+  if (a === b) return true;
+  
+  if (a == null || typeof a != "object" ||
+      b == null || typeof b != "object")
+    return false;
+  
+  var propsInA = 0, propsInB = 0;
+
+  for (var prop in a)
+    propsInA += 1;
+
+  for (var prop in b) {
+    propsInB += 1;
+    if (!(prop in a) || !deepEqual(a[prop], b[prop]))
+      return false;
+  }
+
+  return propsInA == propsInB;
+}
+
+var obj = {here: {is: "an"}, object: 2};
+console.log(deepEqual(obj, obj));
+// → true
+console.log(deepEqual(obj, {here: 1, object: 2}));
+// → false
+console.log(deepEqual(obj, {here: {is: "an"}, object: 2}));
+// → true
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-6.1-mod.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-6.1-mod.golden
new file mode 100644
index 000000000..37afed703
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-6.1-mod.golden
@@ -0,0 +1,980 @@
+{ code: 'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}\n\nVector.prototype.plus = function(other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n};\n\nVector.prototype.minus = function(other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n};\n\nObject.defineProperty(Vector.prototype, "length", {\n  get: function() {\n    return Math.sqrt(this.x * this.x + this.y * this.y);\n  }\n});\n\nvar v1 = new Vector(1, 2);\nvar v2 = new Vector(2, 3);\nvar v3 = v1.plus(v2);\nconsole.log(v3);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 6,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 10,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': [ 'INSTANCE', '', [ 'plus', [ 'REF', 3 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 14,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 20,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 5 ], x: 1, y: 2 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 2,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 5 ], x: 1, y: 2 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 3,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: { this: [ 'REF', 5 ], x: 1, y: 2, __return__: [ 'REF', 5 ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 21,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f3',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 6 ], x: 2, y: 3 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 2,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f3',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 6 ], x: 2, y: 3 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 3,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: 'Vector (constructor)',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f3',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: { this: [ 'REF', 6 ], x: 2, y: 3, __return__: [ 'REF', 6 ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 22,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'other' ],
+            encoded_locals: { this: [ 'REF', 5 ], other: [ 'REF', 6 ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 7,
+       col: 13,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'other' ],
+            encoded_locals: { this: [ 'REF', 5 ], other: [ 'REF', 6 ] } },
+          { func_name: 'Vector (constructor)',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f5',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 3, y: 5 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 2,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'other' ],
+            encoded_locals: { this: [ 'REF', 5 ], other: [ 'REF', 6 ] } },
+          { func_name: 'Vector (constructor)',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f5',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 3, y: 5 } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 3,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 3 ],
+             [ 'y', [ 'JS_SPECIAL_VAL', 'undefined' ] ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: 'Vector',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'other' ],
+            encoded_locals: { this: [ 'REF', 5 ], other: [ 'REF', 6 ] } },
+          { func_name: 'Vector (constructor)',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Vector (constructor)_f5',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 3, y: 5, __return__: [ 'REF', 7 ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 3 ],
+             [ 'y', 5 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'other', '__return__' ],
+            encoded_locals: 
+             { this: [ 'REF', 5 ],
+               other: [ 'REF', 6 ],
+               __return__: [ 'REF', 7 ] } } ],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 3 ],
+             [ 'y', 5 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'REF', 7 ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 23,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 3 ],
+             [ 'y', 5 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } },
+     { stdout: '{ x: 3, y: 5 }\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Vector: [ 'REF', 1 ],
+          v1: [ 'REF', 5 ],
+          v2: [ 'REF', 6 ],
+          v3: [ 'REF', 7 ] },
+       ordered_globals: [ 'Vector', 'v1', 'v2', 'v3' ],
+       line: 23,
+       col: 16,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Vector',
+             'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 2 ] ] ],
+             null ],
+          '2': 
+           [ 'INSTANCE',
+             '',
+             [ 'plus', [ 'REF', 3 ] ],
+             [ 'minus', [ 'REF', 4 ] ] ],
+          '3': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n}',
+             null,
+             null ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 1 ],
+             [ 'y', 2 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '6': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 2 ],
+             [ 'y', 3 ],
+             [ '__proto__', [ 'REF', 2 ] ] ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 3 ],
+             [ 'y', 5 ],
+             [ '__proto__', [ 'REF', 2 ] ] ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-6.1-mod.js b/v4-cokapi/backends/javascript/tests/eloquentjs-6.1-mod.js
new file mode 100644
index 000000000..bf7cbc484
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-6.1-mod.js
@@ -0,0 +1,23 @@
+function Vector(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+Vector.prototype.plus = function(other) {
+  return new Vector(this.x + other.x, this.y + other.y);
+};
+
+Vector.prototype.minus = function(other) {
+  return new Vector(this.x - other.x, this.y - other.y);
+};
+
+Object.defineProperty(Vector.prototype, "length", {
+  get: function() {
+    return Math.sqrt(this.x * this.x + this.y * this.y);
+  }
+});
+
+var v1 = new Vector(1, 2);
+var v2 = new Vector(2, 3);
+var v3 = v1.plus(v2);
+console.log(v3);
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-8.1.golden b/v4-cokapi/backends/javascript/tests/eloquentjs-8.1.golden
new file mode 100644
index 000000000..3fe3eec11
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-8.1.golden
@@ -0,0 +1,2899 @@
+{ code: 'var nTimes = 0; // for determinism\n\nfunction MultiplicatorUnitFailure() {}\n\nfunction primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}\n\nfunction reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}\n\nconsole.log(reliableMultiply(8, 8));\n// → 64',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { nTimes: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { nTimes: 0,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 25,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 0,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 0,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 0,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 0,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'MultiplicatorUnitFailure',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'MultiplicatorUnitFailure (constructor)',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'MultiplicatorUnitFailure (constructor)_f4',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: { this: [ 'REF', 4 ], __return__: [ 'REF', 4 ] } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 3,
+       col: 37,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '4': [ 'INSTANCE', '' ] } },
+     { exception_msg: '[object Object]',
+       stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 10,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'e', 'a', 'b' ],
+            encoded_locals: { e: [ 'REF', 4 ], a: 8, b: 8 } } ],
+       globals: 
+        { e: [ 'REF', 4 ],
+          nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'e',
+          'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 19,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '4': [ 'INSTANCE', '' ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 1,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'MultiplicatorUnitFailure',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'MultiplicatorUnitFailure (constructor)',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'MultiplicatorUnitFailure (constructor)_f5',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: { this: [ 'REF', 5 ], __return__: [ 'REF', 5 ] } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 3,
+       col: 37,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '5': [ 'INSTANCE', '' ] } },
+     { exception_msg: '[object Object]',
+       stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 10,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'e', 'a', 'b' ],
+            encoded_locals: { e: [ 'REF', 5 ], a: 8, b: 8 } } ],
+       globals: 
+        { e: [ 'REF', 5 ],
+          nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'e',
+          'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 19,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '5': [ 'INSTANCE', '' ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 2,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'MultiplicatorUnitFailure',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'MultiplicatorUnitFailure (constructor)',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'MultiplicatorUnitFailure (constructor)_f6',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: { this: [ 'REF', 6 ], __return__: [ 'REF', 6 ] } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 3,
+       col: 37,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '6': [ 'INSTANCE', '' ] } },
+     { exception_msg: '[object Object]',
+       stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 10,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'e', 'a', 'b' ],
+            encoded_locals: { e: [ 'REF', 6 ], a: 8, b: 8 } } ],
+       globals: 
+        { e: [ 'REF', 6 ],
+          nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'e',
+          'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 19,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '6': [ 'INSTANCE', '' ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 3,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'MultiplicatorUnitFailure',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'MultiplicatorUnitFailure (constructor)',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'MultiplicatorUnitFailure (constructor)_f7',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: { this: [ 'REF', 7 ], __return__: [ 'REF', 7 ] } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 3,
+       col: 37,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '7': [ 'INSTANCE', '' ] } },
+     { exception_msg: '[object Object]',
+       stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 10,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'e', 'a', 'b' ],
+            encoded_locals: { e: [ 'REF', 7 ], a: 8, b: 8 } } ],
+       globals: 
+        { e: [ 'REF', 7 ],
+          nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'e',
+          'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 19,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '7': [ 'INSTANCE', '' ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 4,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'MultiplicatorUnitFailure',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'MultiplicatorUnitFailure (constructor)',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'MultiplicatorUnitFailure (constructor)_f8',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: { this: [ 'REF', 8 ], __return__: [ 'REF', 8 ] } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 3,
+       col: 37,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '8': [ 'INSTANCE', '' ] } },
+     { exception_msg: '[object Object]',
+       stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 10,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'e', 'a', 'b' ],
+            encoded_locals: { e: [ 'REF', 8 ], a: 8, b: 8 } } ],
+       globals: 
+        { e: [ 'REF', 8 ],
+          nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'e',
+          'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 19,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '8': [ 'INSTANCE', '' ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 5,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 9,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'MultiplicatorUnitFailure',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'MultiplicatorUnitFailure (constructor)',
+            frame_id: 9,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'MultiplicatorUnitFailure (constructor)_f9',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: { this: [ 'REF', 9 ], __return__: [ 'REF', 9 ] } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 3,
+       col: 37,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '9': [ 'INSTANCE', '' ] } },
+     { exception_msg: '[object Object]',
+       stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 10,
+       col: 10,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'e', 'a', 'b' ],
+            encoded_locals: { e: [ 'REF', 9 ], a: 8, b: 8 } } ],
+       globals: 
+        { e: [ 'REF', 9 ],
+          nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'e',
+          'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 19,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ],
+          '9': [ 'INSTANCE', '' ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 15,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 17,
+       col: 13,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 6,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'primitiveMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b' ],
+            encoded_locals: { a: 8, b: 8 } },
+          { func_name: 'primitiveMultiply',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'primitiveMultiply_f3',
+            ordered_varnames: [ 'a', 'b', '__return__' ],
+            encoded_locals: { a: 8, b: 8, __return__: 64 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 7,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'reliableMultiply',
+       stack_to_render: 
+        [ { func_name: 'reliableMultiply',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'reliableMultiply_f2',
+            ordered_varnames: [ 'a', 'b', '__return__' ],
+            encoded_locals: { a: 8, b: 8, __return__: 64 } } ],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 23,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 25,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '64\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { nTimes: 6,
+          MultiplicatorUnitFailure: [ 'REF', 1 ],
+          primitiveMultiply: [ 'REF', 2 ],
+          reliableMultiply: [ 'REF', 3 ] },
+       ordered_globals: 
+        [ 'nTimes',
+          'MultiplicatorUnitFailure',
+          'primitiveMultiply',
+          'reliableMultiply' ],
+       line: 26,
+       col: 7,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'MultiplicatorUnitFailure',
+             'function MultiplicatorUnitFailure() {}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'primitiveMultiply',
+             'function primitiveMultiply(a, b) {\n  if (nTimes > 5)\n    return a * b;\n  else {\n    nTimes++;\n    throw new MultiplicatorUnitFailure();\n  }\n}',
+             null,
+             null ],
+          '3': 
+           [ 'JS_FUNCTION',
+             'reliableMultiply',
+             'function reliableMultiply(a, b) {\n  for (;;) {\n    try {\n      return primitiveMultiply(a, b);\n    } catch (e) {\n      if (!(e instanceof MultiplicatorUnitFailure))\n        throw e;\n    }\n  }\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/eloquentjs-8.1.js b/v4-cokapi/backends/javascript/tests/eloquentjs-8.1.js
new file mode 100644
index 000000000..eef50ea3a
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/eloquentjs-8.1.js
@@ -0,0 +1,26 @@
+var nTimes = 0; // for determinism
+
+function MultiplicatorUnitFailure() {}
+
+function primitiveMultiply(a, b) {
+  if (nTimes > 5)
+    return a * b;
+  else {
+    nTimes++;
+    throw new MultiplicatorUnitFailure();
+  }
+}
+
+function reliableMultiply(a, b) {
+  for (;;) {
+    try {
+      return primitiveMultiply(a, b);
+    } catch (e) {
+      if (!(e instanceof MultiplicatorUnitFailure))
+        throw e;
+    }
+  }
+}
+
+console.log(reliableMultiply(8, 8));
+// → 64
diff --git a/v4-cokapi/backends/javascript/tests/empty-obj.golden b/v4-cokapi/backends/javascript/tests/empty-obj.golden
new file mode 100644
index 000000000..fa977299a
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/empty-obj.golden
@@ -0,0 +1,31 @@
+{ code: '// make sure weird stuff doesn\'t happen with empty objects\nvar lst = []\nvar obj = {}',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { lst: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          obj: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'lst', 'obj' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { lst: [ 'REF', 1 ], obj: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'lst', 'obj' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST' ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { lst: [ 'REF', 1 ], obj: [ 'REF', 2 ] },
+       ordered_globals: [ 'lst', 'obj' ],
+       line: 3,
+       col: 12,
+       event: 'step_line',
+       heap: { '1': [ 'LIST' ], '2': [ 'INSTANCE', '' ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/empty-obj.js b/v4-cokapi/backends/javascript/tests/empty-obj.js
new file mode 100644
index 000000000..9c0097687
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/empty-obj.js
@@ -0,0 +1,3 @@
+// make sure weird stuff doesn't happen with empty objects
+var lst = []
+var obj = {}
diff --git a/v4-cokapi/backends/javascript/tests/exception-oneliner.golden b/v4-cokapi/backends/javascript/tests/exception-oneliner.golden
new file mode 100644
index 000000000..aa43ccd8f
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/exception-oneliner.golden
@@ -0,0 +1,21 @@
+{ code: 'var y = Object.create(5);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { y: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'y' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { exception_msg: 'TypeError: Object prototype may only be an Object or null',
+       stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { y: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'y' ],
+       line: 1,
+       col: 0,
+       event: 'exception',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/exception-oneliner.js b/v4-cokapi/backends/javascript/tests/exception-oneliner.js
new file mode 100644
index 000000000..83d03f517
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/exception-oneliner.js
@@ -0,0 +1 @@
+var y = Object.create(5);
diff --git a/v4-cokapi/backends/javascript/tests/exception-small.golden b/v4-cokapi/backends/javascript/tests/exception-small.golden
new file mode 100644
index 000000000..3ed2d8ddc
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/exception-small.golden
@@ -0,0 +1,48 @@
+{ code: 'try {\n    throw Error(\'oops\');\n}\ncatch (e) {\n    var xxx = 1;\n    console.log(e); // e should be in scope here\n}',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { xxx: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'xxx' ],
+       line: 2,
+       col: 10,
+       event: 'step_line',
+       heap: {} },
+     { exception_msg: 'Error: oops',
+       stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { xxx: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'xxx' ],
+       line: 2,
+       col: 10,
+       event: 'exception',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { e: [ 'REF', 1 ], xxx: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'e', 'xxx' ],
+       line: 5,
+       col: 4,
+       event: 'step_line',
+       heap: { '1': [ 'INSTANCE_PPRINT', 'object', 'Error: oops' ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { e: [ 'REF', 1 ], xxx: 1 },
+       ordered_globals: [ 'e', 'xxx' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: { '1': [ 'INSTANCE_PPRINT', 'object', 'Error: oops' ] } },
+     { stdout: '[Error: oops]\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { xxx: 1 },
+       ordered_globals: [ 'xxx' ],
+       line: 7,
+       col: 1,
+       event: 'step_line',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/exception-small.js b/v4-cokapi/backends/javascript/tests/exception-small.js
new file mode 100644
index 000000000..30c4fa648
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/exception-small.js
@@ -0,0 +1,7 @@
+try {
+    throw Error('oops');
+}
+catch (e) {
+    var xxx = 1;
+    console.log(e); // e should be in scope here
+}
diff --git a/v4-cokapi/backends/javascript/tests/exception.golden b/v4-cokapi/backends/javascript/tests/exception.golden
new file mode 100644
index 000000000..b4065190e
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/exception.golden
@@ -0,0 +1,858 @@
+{ code: '// adapted from OPT Python example\n// Tutorial code from Prof. Peter Wentworth\n// Rhodes University, South Africa (http://www.ru.ac.za/)\n\nfunction f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}\n\nf(4);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 22,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 7,
+       col: 8,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 11,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 12,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 13,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 7,
+       col: 8,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 11,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 12,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 13,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 7,
+       col: 8,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 11,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 12,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 13,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 7,
+       col: 8,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 11,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: 10 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 12,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\nx is 10\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: 10 } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 13,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\nx is 10\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: 10 } },
+          { func_name: 'f',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f6',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 0, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 7,
+       col: 8,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\nx is 10\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: 10 } },
+          { func_name: 'f',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f6',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 0, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 8,
+       col: 20,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { exception_msg: 'Error: DivByZero',
+       stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\nx is 10\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: 10 } },
+          { func_name: 'f',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f6',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 0, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 8,
+       col: 16,
+       event: 'exception',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } },
+     { stdout: 'x is 2.5\nx is 3.3333333333333335\nx is 5\nx is 10\n',
+       func_name: 'f',
+       stack_to_render: 
+        [ { func_name: 'f',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f2',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 4, x: 2.5 } },
+          { func_name: 'f',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f3',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 3, x: 3.3333333333333335 } },
+          { func_name: 'f',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f4',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 2, x: 5 } },
+          { func_name: 'f',
+            frame_id: 5,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f5',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 1, x: 10 } },
+          { func_name: 'f',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'f_f6',
+            ordered_varnames: [ 'n', 'x' ],
+            encoded_locals: { n: 0, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { f: [ 'REF', 1 ] },
+       ordered_globals: [ 'f' ],
+       line: 18,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'f',
+             'function f(n) {\n    try {\n        if (n == 0) {\n          throw new Error(\'DivByZero\');\n        }\n        else {\n          var x = 10 / n;\n          console.log("x is " + x);\n          f(n-1);\n          console.log("survived!");\n        }\n    }\n    finally {\n        console.log("Bye from f where n = " + n);\n    }\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/exception.js b/v4-cokapi/backends/javascript/tests/exception.js
new file mode 100644
index 000000000..fa9e10c17
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/exception.js
@@ -0,0 +1,22 @@
+// adapted from OPT Python example
+// Tutorial code from Prof. Peter Wentworth
+// Rhodes University, South Africa (http://www.ru.ac.za/)
+
+function f(n) {
+    try {
+        if (n == 0) {
+          throw new Error('DivByZero');
+        }
+        else {
+          var x = 10 / n;
+          console.log("x is " + x);
+          f(n-1);
+          console.log("survived!");
+        }
+    }
+    finally {
+        console.log("Bye from f where n = " + n);
+    }
+}
+
+f(4);
diff --git a/v4-cokapi/backends/javascript/tests/fact.golden b/v4-cokapi/backends/javascript/tests/fact.golden
new file mode 100644
index 000000000..d94950f73
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/fact.golden
@@ -0,0 +1,947 @@
+{ code: 'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}\n\nfact(3);\nfact(3);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 10,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 6,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 6,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 6,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } },
+          { func_name: 'fact',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 0 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } },
+          { func_name: 'fact',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f5',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 0 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 3,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 4,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f4',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } },
+          { func_name: 'fact',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f5',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 0, __return__: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f4',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 1, __return__: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f3',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 2, __return__: 2 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f2',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 3, __return__: 6 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 11,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 6,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 6,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f8',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f8',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 6,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 8,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f8',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } },
+          { func_name: 'fact',
+            frame_id: 9,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f9',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 0 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 8,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f8',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } },
+          { func_name: 'fact',
+            frame_id: 9,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f9',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 0 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 3,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 8,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f8',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 1 } },
+          { func_name: 'fact',
+            frame_id: 9,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f9',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 0, __return__: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 3,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 2 } },
+          { func_name: 'fact',
+            frame_id: 8,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f8',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 1, __return__: 1 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n' ],
+            encoded_locals: { n: 3 } },
+          { func_name: 'fact',
+            frame_id: 7,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f7',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 2, __return__: 2 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'fact',
+       stack_to_render: 
+        [ { func_name: 'fact',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'fact_f6',
+            ordered_varnames: [ 'n', '__return__' ],
+            encoded_locals: { n: 3, __return__: 6 } } ],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 8,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { fact: [ 'REF', 1 ] },
+       ordered_globals: [ 'fact' ],
+       line: 11,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'fact',
+             'function fact(n) {\n  if (n == 0) {\n    return 1;\n  }\n  else {\n    return n * fact(n-1);\n  }\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/fact.js b/v4-cokapi/backends/javascript/tests/fact.js
new file mode 100644
index 000000000..1c156a0d1
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/fact.js
@@ -0,0 +1,11 @@
+function fact(n) {
+  if (n == 0) {
+    return 1;
+  }
+  else {
+    return n * fact(n-1);
+  }
+}
+
+fact(3);
+fact(3);
diff --git a/v4-cokapi/backends/javascript/tests/first.golden b/v4-cokapi/backends/javascript/tests/first.golden
new file mode 100644
index 000000000..a6a26e490
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/first.golden
@@ -0,0 +1,59 @@
+{ code: 'var x = 5;\nvar y = 10;\nvar z = x + y;\nvar w = z - (y / x);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          w: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'y', 'z', 'w' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { x: 5,
+          y: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          w: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'y', 'z', 'w' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { x: 5,
+          y: 10,
+          z: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          w: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'y', 'z', 'w' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5, y: 10, z: 15, w: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'y', 'z', 'w' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5, y: 10, z: 15, w: 13 },
+       ordered_globals: [ 'x', 'y', 'z', 'w' ],
+       line: 4,
+       col: 20,
+       event: 'step_line',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/first.js b/v4-cokapi/backends/javascript/tests/first.js
new file mode 100644
index 000000000..f84bd59bc
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/first.js
@@ -0,0 +1,4 @@
+var x = 5;
+var y = 10;
+var z = x + y;
+var w = z - (y / x);
diff --git a/v4-cokapi/backends/javascript/tests/func-mod-arg.golden b/v4-cokapi/backends/javascript/tests/func-mod-arg.golden
new file mode 100644
index 000000000..b73802d5d
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/func-mod-arg.golden
@@ -0,0 +1,104 @@
+{ code: '// modify argument\nfunction foo(y) {\n    y *= 3;\n    var x = 42;\n}\n\nfoo(10);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 7,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    y *= 3;\n    var x = 42;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'x' ],
+            encoded_locals: { y: 10, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 3,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    y *= 3;\n    var x = 42;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'x' ],
+            encoded_locals: { y: 30, x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 4,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    y *= 3;\n    var x = 42;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'y', 'x', '__return__' ],
+            encoded_locals: { y: 30, x: 42, __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 4,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    y *= 3;\n    var x = 42;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 7,
+       col: 8,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(y) {\n    y *= 3;\n    var x = 42;\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/func-mod-arg.js b/v4-cokapi/backends/javascript/tests/func-mod-arg.js
new file mode 100644
index 000000000..a02c8937c
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/func-mod-arg.js
@@ -0,0 +1,7 @@
+// modify argument
+function foo(y) {
+    y *= 3;
+    var x = 42;
+}
+
+foo(10);
diff --git a/v4-cokapi/backends/javascript/tests/func-properties.golden b/v4-cokapi/backends/javascript/tests/func-properties.golden
new file mode 100644
index 000000000..2727aecba
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/func-properties.golden
@@ -0,0 +1,62 @@
+{ code: 'function foo() {\n    return \'hello\';\n}\n\n// display ordinary properties of functions\nfoo.prop1 = 42;\nfoo.prop2 = \'why?\';\n\nconsole.log(foo.prop1, foo.prop2);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 6,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n    return \'hello\';\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 7,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n    return \'hello\';\n}',
+             [ [ 'prop1', 42 ] ],
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 9,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n    return \'hello\';\n}',
+             [ [ 'prop1', 42 ], [ 'prop2', 'why?' ] ],
+             null ] } },
+     { stdout: '42 \'why?\'\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 9,
+       col: 34,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n    return \'hello\';\n}',
+             [ [ 'prop1', 42 ], [ 'prop2', 'why?' ] ],
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/func-properties.js b/v4-cokapi/backends/javascript/tests/func-properties.js
new file mode 100644
index 000000000..7b9931246
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/func-properties.js
@@ -0,0 +1,9 @@
+function foo() {
+    return 'hello';
+}
+
+// display ordinary properties of functions
+foo.prop1 = 42;
+foo.prop2 = 'why?';
+
+console.log(foo.prop1, foo.prop2);
diff --git a/v4-cokapi/backends/javascript/tests/func-return.golden b/v4-cokapi/backends/javascript/tests/func-return.golden
new file mode 100644
index 000000000..ee1220f5f
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/func-return.golden
@@ -0,0 +1,191 @@
+{ code: 'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}\n\nfoo(10);\nfoo(-10);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 13,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'i' ],
+            encoded_locals: { i: 10 } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'i' ],
+            encoded_locals: { i: 10 } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 4,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'i', '__return__' ],
+            encoded_locals: { i: 10, __return__: 10 } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 4,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 14,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f3',
+            ordered_varnames: [ 'i' ],
+            encoded_locals: { i: -10 } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f3',
+            ordered_varnames: [ 'i' ],
+            encoded_locals: { i: -10 } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f3',
+            ordered_varnames: [ 'i', '__return__' ],
+            encoded_locals: { i: -10, __return__: 10 } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 7,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 14,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(i) {\n\n  if (i > 0) {\n    return i;\n\n  } else {\n    return -1 * i;\n\n  }\n\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/func-return.js b/v4-cokapi/backends/javascript/tests/func-return.js
new file mode 100644
index 000000000..edd95fb06
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/func-return.js
@@ -0,0 +1,14 @@
+function foo(i) {
+
+  if (i > 0) {
+    return i;
+
+  } else {
+    return -1 * i;
+
+  }
+
+}
+
+foo(10);
+foo(-10);
diff --git a/v4-cokapi/backends/javascript/tests/infinite-fibonacci.golden b/v4-cokapi/backends/javascript/tests/infinite-fibonacci.golden
new file mode 100644
index 000000000..1a89f28d5
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/infinite-fibonacci.golden
@@ -0,0 +1,2706 @@
+{ code: '// Infinite Fibonacci!!!\nvar arr = [1, 1];\nconsole.log(arr[0]);\nwhile (true) {\n  console.log(arr[arr.length-1]);\n  var tmp = arr[0] + arr[1];\n  arr.push(tmp);\n  arr.shift();\n}',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { arr: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          tmp: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 3,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 1 ] } },
+     { stdout: '1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 1 ] } },
+     { stdout: '1\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 1 ] } },
+     { stdout: '1\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 1 ] } },
+     { stdout: '1\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 1, 2 ] } },
+     { stdout: '1\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 2 ] } },
+     { stdout: '1\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 2 ] } },
+     { stdout: '1\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 2 ] } },
+     { stdout: '1\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 2 ] } },
+     { stdout: '1\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1, 2, 3 ] } },
+     { stdout: '1\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2, 3 ] } },
+     { stdout: '1\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2, 3 ] } },
+     { stdout: '1\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2, 3 ] } },
+     { stdout: '1\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2, 3 ] } },
+     { stdout: '1\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2, 3, 5 ] } },
+     { stdout: '1\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3, 5 ] } },
+     { stdout: '1\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3, 5 ] } },
+     { stdout: '1\n1\n2\n3\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3, 5 ] } },
+     { stdout: '1\n1\n2\n3\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 8 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3, 5 ] } },
+     { stdout: '1\n1\n2\n3\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 8 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3, 5, 8 ] } },
+     { stdout: '1\n1\n2\n3\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 8 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5, 8 ] } },
+     { stdout: '1\n1\n2\n3\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 8 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5, 8 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 8 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5, 8 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 13 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5, 8 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 13 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5, 8, 13 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 13 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 8, 13 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 13 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 8, 13 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 13 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 8, 13 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 21 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 8, 13 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 21 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 8, 13, 21 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 21 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 13, 21 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 21 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 13, 21 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 21 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 13, 21 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 34 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 13, 21 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 34 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 13, 21, 34 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 34 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 21, 34 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 34 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 21, 34 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 34 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 21, 34 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 55 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 21, 34 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 55 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 21, 34, 55 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 55 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 34, 55 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 55 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 34, 55 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 55 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 34, 55 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 89 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 34, 55 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 89 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 34, 55, 89 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 89 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 55, 89 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 89 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 55, 89 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 89 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 55, 89 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 144 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 55, 89 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 144 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 55, 89, 144 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 144 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 89, 144 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 144 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 89, 144 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 144 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 89, 144 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 233 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 89, 144 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 233 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 89, 144, 233 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 233 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 144, 233 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 233 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 144, 233 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 233 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 144, 233 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 377 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 144, 233 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 377 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 144, 233, 377 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 377 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 233, 377 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 377 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 233, 377 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 377 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 233, 377 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 610 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 233, 377 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 610 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 233, 377, 610 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 610 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 377, 610 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 610 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 377, 610 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 610 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 377, 610 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 987 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 377, 610 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 987 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 377, 610, 987 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 987 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 610, 987 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 987 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 610, 987 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 987 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 610, 987 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1597 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 610, 987 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1597 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 610, 987, 1597 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1597 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 987, 1597 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1597 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 987, 1597 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1597 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 987, 1597 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2584 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 987, 1597 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2584 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 987, 1597, 2584 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2584 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1597, 2584 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2584 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1597, 2584 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2584 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1597, 2584 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4181 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1597, 2584 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4181 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1597, 2584, 4181 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4181 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2584, 4181 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4181 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2584, 4181 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4181 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2584, 4181 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 6765 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2584, 4181 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 6765 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2584, 4181, 6765 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 6765 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4181, 6765 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 6765 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4181, 6765 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 6765 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4181, 6765 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 10946 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4181, 6765 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 10946 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4181, 6765, 10946 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 10946 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 6765, 10946 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 10946 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 6765, 10946 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 10946 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 6765, 10946 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 17711 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 6765, 10946 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 17711 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 6765, 10946, 17711 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 17711 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 10946, 17711 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 17711 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 10946, 17711 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 17711 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 10946, 17711 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 28657 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 10946, 17711 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 28657 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 10946, 17711, 28657 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 28657 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 17711, 28657 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 28657 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 17711, 28657 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 28657 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 17711, 28657 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 46368 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 17711, 28657 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 46368 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 17711, 28657, 46368 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 46368 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 28657, 46368 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 46368 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 28657, 46368 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 46368 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 28657, 46368 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 75025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 28657, 46368 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 75025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 28657, 46368, 75025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 75025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 46368, 75025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 75025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 46368, 75025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 75025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 46368, 75025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 121393 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 46368, 75025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 121393 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 46368, 75025, 121393 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 121393 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 75025, 121393 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 121393 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 75025, 121393 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 121393 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 75025, 121393 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 196418 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 75025, 121393 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 196418 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 75025, 121393, 196418 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 196418 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 121393, 196418 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 196418 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 121393, 196418 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 196418 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 121393, 196418 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 317811 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 121393, 196418 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 317811 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 121393, 196418, 317811 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 317811 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 196418, 317811 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 317811 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 196418, 317811 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 317811 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 196418, 317811 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 514229 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 196418, 317811 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 514229 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 196418, 317811, 514229 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 514229 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 317811, 514229 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 514229 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 317811, 514229 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 514229 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 317811, 514229 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 832040 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 317811, 514229 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 832040 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 317811, 514229, 832040 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 832040 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 514229, 832040 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 832040 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 514229, 832040 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 832040 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 514229, 832040 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1346269 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 514229, 832040 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1346269 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 514229, 832040, 1346269 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1346269 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 832040, 1346269 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1346269 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 832040, 1346269 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1346269 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 832040, 1346269 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2178309 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 832040, 1346269 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2178309 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 832040, 1346269, 2178309 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2178309 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1346269, 2178309 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2178309 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1346269, 2178309 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2178309 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1346269, 2178309 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3524578 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1346269, 2178309 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3524578 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1346269, 2178309, 3524578 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3524578 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2178309, 3524578 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3524578 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2178309, 3524578 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 3524578 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2178309, 3524578 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5702887 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2178309, 3524578 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5702887 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2178309, 3524578, 5702887 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5702887 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3524578, 5702887 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5702887 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3524578, 5702887 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 5702887 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3524578, 5702887 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 9227465 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3524578, 5702887 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 9227465 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 3524578, 5702887, 9227465 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 9227465 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5702887, 9227465 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 9227465 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5702887, 9227465 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 9227465 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5702887, 9227465 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 14930352 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5702887, 9227465 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 14930352 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 5702887, 9227465, 14930352 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 14930352 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 9227465, 14930352 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 14930352 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 9227465, 14930352 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 14930352 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 9227465, 14930352 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 24157817 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 9227465, 14930352 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 24157817 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 9227465, 14930352, 24157817 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 24157817 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 14930352, 24157817 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 24157817 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 14930352, 24157817 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 24157817 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 14930352, 24157817 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 39088169 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 14930352, 24157817 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 39088169 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 14930352, 24157817, 39088169 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 39088169 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 24157817, 39088169 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 39088169 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 24157817, 39088169 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 39088169 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 24157817, 39088169 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 63245986 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 24157817, 39088169 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 63245986 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 24157817, 39088169, 63245986 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 63245986 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 39088169, 63245986 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 63245986 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 39088169, 63245986 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 63245986 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 39088169, 63245986 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 102334155 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 39088169, 63245986 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 102334155 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 39088169, 63245986, 102334155 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 102334155 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 63245986, 102334155 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 102334155 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 63245986, 102334155 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 102334155 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 63245986, 102334155 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 165580141 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 63245986, 102334155 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 165580141 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 63245986, 102334155, 165580141 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 165580141 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 102334155, 165580141 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 165580141 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 102334155, 165580141 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 165580141 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 102334155, 165580141 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 267914296 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 102334155, 165580141 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 267914296 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 102334155, 165580141, 267914296 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 267914296 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 165580141, 267914296 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 267914296 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 165580141, 267914296 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 267914296 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 165580141, 267914296 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 433494437 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 165580141, 267914296 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 433494437 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 165580141, 267914296, 433494437 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 433494437 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 267914296, 433494437 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 433494437 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 267914296, 433494437 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 433494437 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 267914296, 433494437 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 701408733 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 267914296, 433494437 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 701408733 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 267914296, 433494437, 701408733 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 701408733 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 433494437, 701408733 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 701408733 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 433494437, 701408733 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 701408733 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 433494437, 701408733 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1134903170 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 433494437, 701408733 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1134903170 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 433494437, 701408733, 1134903170 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1134903170 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 701408733, 1134903170 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1134903170 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 701408733, 1134903170 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1134903170 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 701408733, 1134903170 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1836311903 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 701408733, 1134903170 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1836311903 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 701408733, 1134903170, 1836311903 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1836311903 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1134903170, 1836311903 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1836311903 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1134903170, 1836311903 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1836311903 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1134903170, 1836311903 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2971215073 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1134903170, 1836311903 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2971215073 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1134903170, 1836311903, 2971215073 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2971215073 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1836311903, 2971215073 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2971215073 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1836311903, 2971215073 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2971215073 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1836311903, 2971215073 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4807526976 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1836311903, 2971215073 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4807526976 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1836311903, 2971215073, 4807526976 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4807526976 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2971215073, 4807526976 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4807526976 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2971215073, 4807526976 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4807526976 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2971215073, 4807526976 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 7778742049 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2971215073, 4807526976 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 7778742049 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 2971215073, 4807526976, 7778742049 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 7778742049 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4807526976, 7778742049 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 7778742049 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4807526976, 7778742049 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 7778742049 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4807526976, 7778742049 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 12586269025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4807526976, 7778742049 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 12586269025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 4807526976, 7778742049, 12586269025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 12586269025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 7778742049, 12586269025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 12586269025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 7778742049, 12586269025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 12586269025 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 7778742049, 12586269025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 20365011074 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 7778742049, 12586269025 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 20365011074 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 7778742049, 12586269025, 20365011074 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 20365011074 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 12586269025, 20365011074 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 20365011074 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 12586269025, 20365011074 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 20365011074 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 12586269025, 20365011074 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 32951280099 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 12586269025, 20365011074 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 32951280099 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 12586269025, 20365011074, 32951280099 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 32951280099 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 20365011074, 32951280099 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 32951280099 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 20365011074, 32951280099 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 32951280099 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 20365011074, 32951280099 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 53316291173 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 20365011074, 32951280099 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 53316291173 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 20365011074, 32951280099, 53316291173 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 53316291173 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 32951280099, 53316291173 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 53316291173 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 32951280099, 53316291173 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 53316291173 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 32951280099, 53316291173 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 86267571272 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 32951280099, 53316291173 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 86267571272 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 32951280099, 53316291173, 86267571272 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 86267571272 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 53316291173, 86267571272 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 86267571272 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 53316291173, 86267571272 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 86267571272 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 53316291173, 86267571272 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 139583862445 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 53316291173, 86267571272 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 139583862445 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 53316291173, 86267571272, 139583862445 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 139583862445 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 86267571272, 139583862445 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 139583862445 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 86267571272, 139583862445 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 139583862445 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 86267571272, 139583862445 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 225851433717 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 86267571272, 139583862445 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 225851433717 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 86267571272, 139583862445, 225851433717 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 225851433717 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 139583862445, 225851433717 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 225851433717 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 139583862445, 225851433717 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 225851433717 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 139583862445, 225851433717 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 365435296162 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 139583862445, 225851433717 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 365435296162 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 139583862445, 225851433717, 365435296162 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 365435296162 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 225851433717, 365435296162 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 365435296162 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 225851433717, 365435296162 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 365435296162 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 225851433717, 365435296162 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 591286729879 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 225851433717, 365435296162 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 591286729879 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 225851433717, 365435296162, 591286729879 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 591286729879 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 365435296162, 591286729879 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 591286729879 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 365435296162, 591286729879 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 591286729879 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 365435296162, 591286729879 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 956722026041 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 365435296162, 591286729879 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 956722026041 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 365435296162, 591286729879, 956722026041 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 956722026041 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 591286729879, 956722026041 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 956722026041 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 591286729879, 956722026041 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 956722026041 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 591286729879, 956722026041 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1548008755920 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 591286729879, 956722026041 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1548008755920 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 591286729879, 956722026041, 1548008755920 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1548008755920 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 956722026041, 1548008755920 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1548008755920 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 956722026041, 1548008755920 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 1548008755920 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 956722026041, 1548008755920 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2504730781961 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 956722026041, 1548008755920 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2504730781961 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 8,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 956722026041, 1548008755920, 2504730781961 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2504730781961 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 4,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1548008755920, 2504730781961 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2504730781961 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 5,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1548008755920, 2504730781961 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 2504730781961 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 6,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1548008755920, 2504730781961 ] } },
+     { stdout: '1\n1\n2\n3\n5\n8\n13\n21\n34\n55\n89\n144\n233\n377\n610\n987\n1597\n2584\n4181\n6765\n10946\n17711\n28657\n46368\n75025\n121393\n196418\n317811\n514229\n832040\n1346269\n2178309\n3524578\n5702887\n9227465\n14930352\n24157817\n39088169\n63245986\n102334155\n165580141\n267914296\n433494437\n701408733\n1134903170\n1836311903\n2971215073\n4807526976\n7778742049\n12586269025\n20365011074\n32951280099\n53316291173\n86267571272\n139583862445\n225851433717\n365435296162\n591286729879\n956722026041\n1548008755920\n2504730781961\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { arr: [ 'REF', 1 ], tmp: 4052739537881 },
+       ordered_globals: [ 'arr', 'tmp' ],
+       line: 7,
+       col: 2,
+       event: 'step_line',
+       heap: { '1': [ 'LIST', 1548008755920, 2504730781961 ] } },
+     { event: 'instruction_limit_reached',
+       exception_msg: '(stopped after 300 steps to prevent possible infinite loop)' } ] }
diff --git a/v4-cokapi/backends/javascript/tests/infinite-fibonacci.js b/v4-cokapi/backends/javascript/tests/infinite-fibonacci.js
new file mode 100644
index 000000000..0558077c7
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/infinite-fibonacci.js
@@ -0,0 +1,9 @@
+// Infinite Fibonacci!!!
+var arr = [1, 1];
+console.log(arr[0]);
+while (true) {
+  console.log(arr[arr.length-1]);
+  var tmp = arr[0] + arr[1];
+  arr.push(tmp);
+  arr.shift();
+}
diff --git a/v4-cokapi/backends/javascript/tests/infinite-loop.golden b/v4-cokapi/backends/javascript/tests/infinite-loop.golden
new file mode 100644
index 000000000..81600341e
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/infinite-loop.golden
@@ -0,0 +1,2704 @@
+{ code: 'var i = 0;\nwhile(true) {\n  console.log(i++);\n}',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'i' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 0 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 1 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 1 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 2 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 2 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 3 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 3 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 4 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 4 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 5 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 5 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 6 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 6 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 7 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 7 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 8 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 8 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 9 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 9 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 10 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 10 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 11 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 11 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 12 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 12 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 13 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 13 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 14 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 14 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 15 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 15 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 16 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 16 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 17 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 17 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 18 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 18 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 19 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 19 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 20 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 20 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 21 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 21 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 22 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 22 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 23 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 23 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 24 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 24 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 25 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 25 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 26 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 26 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 27 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 27 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 28 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 28 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 29 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 29 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 30 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 30 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 31 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 31 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 32 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 32 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 33 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 33 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 34 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 34 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 35 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 35 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 36 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 36 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 37 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 37 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 38 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 38 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 39 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 39 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 40 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 40 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 41 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 41 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 42 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 42 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 43 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 43 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 44 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 44 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 45 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 45 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 46 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 46 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 47 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 47 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 48 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 48 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 49 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 49 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 50 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 50 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 51 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 51 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 52 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 52 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 53 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 53 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 54 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 54 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 55 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 55 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 56 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 56 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 57 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 57 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 58 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 58 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 59 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 59 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 60 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 60 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 61 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 61 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 62 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 62 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 63 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 63 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 64 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 64 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 65 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 65 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 66 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 66 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 67 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 67 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 68 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 68 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 69 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 69 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 70 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 70 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 71 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 71 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 72 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 72 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 73 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 73 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 74 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 74 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 75 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 75 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 76 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 76 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 77 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 77 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 78 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 78 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 79 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 79 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 80 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 80 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 81 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 81 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 82 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 82 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 83 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 83 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 84 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 84 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 85 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 85 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 86 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 86 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 87 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 87 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 88 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 88 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 89 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 89 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 90 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 90 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 91 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 91 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 92 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 92 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 93 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 93 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 94 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 94 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 95 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 95 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 96 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 96 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 97 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 97 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 98 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 98 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 99 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 99 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 100 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 100 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 101 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 101 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 102 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 102 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 103 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 103 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 104 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 104 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 105 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 105 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 106 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 106 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 107 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 107 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 108 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 108 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 109 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 109 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 110 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 110 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 111 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 111 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 112 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 112 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 113 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 113 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 114 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 114 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 115 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 115 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 116 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 116 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 117 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 117 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 118 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 118 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 119 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 119 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 120 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 120 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 121 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 121 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 122 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 122 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 123 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 123 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 124 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 124 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 125 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 125 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 126 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 126 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 127 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 127 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 128 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 128 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 129 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 129 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 130 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 130 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 131 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 131 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 132 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 132 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 133 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 133 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 134 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 134 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 135 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 135 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 136 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 136 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 137 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 137 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 138 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 138 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 139 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 139 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 140 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 140 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 141 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 141 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 142 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 142 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 143 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 143 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 144 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 144 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 145 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 145 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 146 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 146 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 147 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 147 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n147\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 148 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n147\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 148 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n147\n148\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 149 },
+       ordered_globals: [ 'i' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20\n21\n22\n23\n24\n25\n26\n27\n28\n29\n30\n31\n32\n33\n34\n35\n36\n37\n38\n39\n40\n41\n42\n43\n44\n45\n46\n47\n48\n49\n50\n51\n52\n53\n54\n55\n56\n57\n58\n59\n60\n61\n62\n63\n64\n65\n66\n67\n68\n69\n70\n71\n72\n73\n74\n75\n76\n77\n78\n79\n80\n81\n82\n83\n84\n85\n86\n87\n88\n89\n90\n91\n92\n93\n94\n95\n96\n97\n98\n99\n100\n101\n102\n103\n104\n105\n106\n107\n108\n109\n110\n111\n112\n113\n114\n115\n116\n117\n118\n119\n120\n121\n122\n123\n124\n125\n126\n127\n128\n129\n130\n131\n132\n133\n134\n135\n136\n137\n138\n139\n140\n141\n142\n143\n144\n145\n146\n147\n148\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { i: 149 },
+       ordered_globals: [ 'i' ],
+       line: 3,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { event: 'instruction_limit_reached',
+       exception_msg: '(stopped after 300 steps to prevent possible infinite loop)' } ] }
diff --git a/v4-cokapi/backends/javascript/tests/infinite-loop.js b/v4-cokapi/backends/javascript/tests/infinite-loop.js
new file mode 100644
index 000000000..49e83d082
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/infinite-loop.js
@@ -0,0 +1,4 @@
+var i = 0;
+while(true) {
+  console.log(i++);
+}
diff --git a/v4-cokapi/backends/javascript/tests/inheritance.golden b/v4-cokapi/backends/javascript/tests/inheritance.golden
new file mode 100644
index 000000000..58cfe1bcc
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/inheritance.golden
@@ -0,0 +1,1152 @@
+{ code: '// Adapted from Effective JavaScript\nfunction Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}\n\nActor.prototype.moveTo = function(x, y) {\n  this.x = x;\n  this.y = y;\n}\n\nfunction SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}\n\nSpaceShip.prototype = Object.create(Actor.prototype); // inherit!\nSpaceShip.prototype.type = "spaceship";\nSpaceShip.prototype.scorePoint = function() {\n  this.points++;\n}\n\nvar s = new SpaceShip(10, 20);\ns.moveTo(30, 40);\ns.scorePoint();\ns.scorePoint();',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 7,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 17,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             null,
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 17,
+       col: 20,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             null,
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 18,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': [ 'INSTANCE', '', [ '__proto__', [ 'REF', 3 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 19,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ '__proto__', [ 'REF', 3 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 23,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'SpaceShip',
+       stack_to_render: 
+        [ { func_name: 'SpaceShip (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'SpaceShip (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } } ],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 13,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': [ 'INSTANCE', '', [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: 'Actor',
+       stack_to_render: 
+        [ { func_name: 'SpaceShip (constructor)',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'SpaceShip (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } },
+          { func_name: 'Actor',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Actor_f3',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } } ],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 3,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': [ 'INSTANCE', '', [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: 'Actor',
+       stack_to_render: 
+        [ { func_name: 'SpaceShip (constructor)',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'SpaceShip (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } },
+          { func_name: 'Actor',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Actor_f3',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } } ],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 4,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': [ 'INSTANCE', '', [ 'x', 10 ], [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: 'Actor',
+       stack_to_render: 
+        [ { func_name: 'SpaceShip (constructor)',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'SpaceShip (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } },
+          { func_name: 'Actor',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'Actor_f3',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: 
+             { this: [ 'REF', 7 ],
+               x: 10,
+               y: 20,
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 4,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 10 ],
+             [ 'y', 20 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: 'SpaceShip',
+       stack_to_render: 
+        [ { func_name: 'SpaceShip (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'SpaceShip (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20 } } ],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 14,
+       col: 14,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 10 ],
+             [ 'y', 20 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: 'SpaceShip',
+       stack_to_render: 
+        [ { func_name: 'SpaceShip (constructor)',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'SpaceShip (constructor)_f2',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 10, y: 20, __return__: [ 'REF', 7 ] } } ],
+       globals: 
+        { Actor: [ 'REF', 1 ],
+          SpaceShip: [ 'REF', 2 ],
+          s: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 14,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 10 ],
+             [ 'y', 20 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 24,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 10 ],
+             [ 'y', 20 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 30, y: 40 } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 8,
+       col: 9,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 10 ],
+             [ 'y', 20 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'x', 'y' ],
+            encoded_locals: { this: [ 'REF', 7 ], x: 30, y: 40 } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 9,
+       col: 9,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 20 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 4,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f4',
+            ordered_varnames: [ 'this', 'x', 'y', '__return__' ],
+            encoded_locals: 
+             { this: [ 'REF', 7 ],
+               x: 30,
+               y: 40,
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 9,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 25,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f5',
+            ordered_varnames: [ 'this' ],
+            encoded_locals: { this: [ 'REF', 7 ] } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 20,
+       col: 6,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 0 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 5,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f5',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: 
+             { this: [ 'REF', 7 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 20,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 1 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 26,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 1 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'this' ],
+            encoded_locals: { this: [ 'REF', 7 ] } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 20,
+       col: 6,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 1 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: 
+        [ { func_name: '',
+            frame_id: 6,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: '_f6',
+            ordered_varnames: [ 'this', '__return__' ],
+            encoded_locals: 
+             { this: [ 'REF', 7 ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 20,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 2 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { Actor: [ 'REF', 1 ], SpaceShip: [ 'REF', 2 ], s: [ 'REF', 7 ] },
+       ordered_globals: [ 'Actor', 'SpaceShip', 's' ],
+       line: 26,
+       col: 15,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'Actor',
+             'function Actor(x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             [ [ 'prototype', [ 'REF', 3 ] ] ],
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'SpaceShip',
+             'function SpaceShip(x, y) {\n  Actor.call(this, x, y);\n  this.points = 0;\n}',
+             [ [ 'prototype', [ 'REF', 5 ] ] ],
+             null ],
+          '3': [ 'INSTANCE', '', [ 'moveTo', [ 'REF', 4 ] ] ],
+          '4': 
+           [ 'JS_FUNCTION',
+             '',
+             'function (x, y) {\n  this.x = x;\n  this.y = y;\n}',
+             null,
+             null ],
+          '5': 
+           [ 'INSTANCE',
+             '',
+             [ 'type', 'spaceship' ],
+             [ 'scorePoint', [ 'REF', 6 ] ],
+             [ '__proto__', [ 'REF', 3 ] ] ],
+          '6': 
+           [ 'JS_FUNCTION',
+             '',
+             'function () {\n  this.points++;\n}',
+             null,
+             null ],
+          '7': 
+           [ 'INSTANCE',
+             '',
+             [ 'x', 30 ],
+             [ 'y', 40 ],
+             [ 'points', 2 ],
+             [ '__proto__', [ 'REF', 5 ] ] ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/inheritance.js b/v4-cokapi/backends/javascript/tests/inheritance.js
new file mode 100644
index 000000000..67b12f2a5
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/inheritance.js
@@ -0,0 +1,26 @@
+// Adapted from Effective JavaScript
+function Actor(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+Actor.prototype.moveTo = function(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+function SpaceShip(x, y) {
+  Actor.call(this, x, y);
+  this.points = 0;
+}
+
+SpaceShip.prototype = Object.create(Actor.prototype); // inherit!
+SpaceShip.prototype.type = "spaceship";
+SpaceShip.prototype.scorePoint = function() {
+  this.points++;
+}
+
+var s = new SpaceShip(10, 20);
+s.moveTo(30, 40);
+s.scorePoint();
+s.scorePoint();
diff --git a/v4-cokapi/backends/javascript/tests/no-prototype-object.golden b/v4-cokapi/backends/javascript/tests/no-prototype-object.golden
new file mode 100644
index 000000000..6b4524b85
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/no-prototype-object.golden
@@ -0,0 +1,29 @@
+{ code: 'var y = Object.create(null);\nconsole.log(y);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { y: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'y' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { y: [ 'REF', 1 ] },
+       ordered_globals: [ 'y' ],
+       line: 2,
+       col: 0,
+       event: 'step_line',
+       heap: { '1': [ 'INSTANCE', '' ] } },
+     { stdout: '{}\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { y: [ 'REF', 1 ] },
+       ordered_globals: [ 'y' ],
+       line: 2,
+       col: 15,
+       event: 'step_line',
+       heap: { '1': [ 'INSTANCE', '' ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/no-prototype-object.js b/v4-cokapi/backends/javascript/tests/no-prototype-object.js
new file mode 100644
index 000000000..bfc7fb539
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/no-prototype-object.js
@@ -0,0 +1,2 @@
+var y = Object.create(null);
+console.log(y);
diff --git a/v4-cokapi/backends/javascript/tests/not-enough-args.golden b/v4-cokapi/backends/javascript/tests/not-enough-args.golden
new file mode 100644
index 000000000..70fb441f4
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/not-enough-args.golden
@@ -0,0 +1,84 @@
+{ code: 'function foo(a, b, c) {\n  console.log(a, b, c);\n}\n\nfoo(1, 2);',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(a, b, c) {\n  console.log(a, b, c);\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'a', 'b', 'c' ],
+            encoded_locals: { a: 1, b: 2, c: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 2,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(a, b, c) {\n  console.log(a, b, c);\n}',
+             null,
+             null ] } },
+     { stdout: '1 2 undefined\n',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'a', 'b', 'c', '__return__' ],
+            encoded_locals: 
+             { a: 1,
+               b: 2,
+               c: [ 'JS_SPECIAL_VAL', 'undefined' ],
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 2,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(a, b, c) {\n  console.log(a, b, c);\n}',
+             null,
+             null ] } },
+     { stdout: '1 2 undefined\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'foo' ],
+       line: 5,
+       col: 10,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo(a, b, c) {\n  console.log(a, b, c);\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/not-enough-args.js b/v4-cokapi/backends/javascript/tests/not-enough-args.js
new file mode 100644
index 000000000..fdc600e03
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/not-enough-args.js
@@ -0,0 +1,5 @@
+function foo(a, b, c) {
+  console.log(a, b, c);
+}
+
+foo(1, 2);
diff --git a/v4-cokapi/backends/javascript/tests/num-literal.golden b/v4-cokapi/backends/javascript/tests/num-literal.golden
new file mode 100644
index 000000000..0fe465047
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/num-literal.golden
@@ -0,0 +1,20 @@
+{ code: '123',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: {},
+       ordered_globals: [],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: {},
+       ordered_globals: [],
+       line: 1,
+       col: 3,
+       event: 'step_line',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/num-literal.js b/v4-cokapi/backends/javascript/tests/num-literal.js
new file mode 100644
index 000000000..190a18037
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/num-literal.js
@@ -0,0 +1 @@
+123
diff --git a/v4-cokapi/backends/javascript/tests/strict-runtime-error.golden b/v4-cokapi/backends/javascript/tests/strict-runtime-error.golden
new file mode 100644
index 000000000..d5ee9d821
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/strict-runtime-error.golden
@@ -0,0 +1,30 @@
+{ code: 'var x = 5;\ny = 5; // error in strict mode\nz = x + y;',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: {} },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5 },
+       ordered_globals: [ 'x' ],
+       line: 2,
+       col: 2,
+       event: 'step_line',
+       heap: {} },
+     { exception_msg: 'ReferenceError: y is not defined',
+       stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 5 },
+       ordered_globals: [ 'x' ],
+       line: 2,
+       col: 2,
+       event: 'exception',
+       heap: {} } ] }
diff --git a/v4-cokapi/backends/javascript/tests/strict-runtime-error.js b/v4-cokapi/backends/javascript/tests/strict-runtime-error.js
new file mode 100644
index 000000000..507f488aa
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/strict-runtime-error.js
@@ -0,0 +1,3 @@
+var x = 5;
+y = 5; // error in strict mode
+z = x + y;
diff --git a/v4-cokapi/backends/javascript/tests/syntax-error.golden b/v4-cokapi/backends/javascript/tests/syntax-error.golden
new file mode 100644
index 000000000..c0ab2f239
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/syntax-error.golden
@@ -0,0 +1,6 @@
+{ code: 'var x = 5;\nif (x) {\n  console.log(x);\nelse {\n  console.log(\'crapo\');\n}',
+  trace: 
+   [ { event: 'uncaught_exception',
+       exception_msg: 'Unexpected token else',
+       line: 4,
+       col: 1 } ] }
diff --git a/v4-cokapi/backends/javascript/tests/syntax-error.js b/v4-cokapi/backends/javascript/tests/syntax-error.js
new file mode 100644
index 000000000..0a96c2fd3
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/syntax-error.js
@@ -0,0 +1,6 @@
+var x = 5;
+if (x) {
+  console.log(x);
+else {
+  console.log('crapo');
+}
diff --git a/v4-cokapi/backends/javascript/tests/syntax-error2.golden b/v4-cokapi/backends/javascript/tests/syntax-error2.golden
new file mode 100644
index 000000000..7a6a6b6fa
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/syntax-error2.golden
@@ -0,0 +1,6 @@
+{ code: 'function Vector(x, y) {\n  this.x = x;\n  this.y = y;\n}\n\nVector.prototype.plus = xxxfunction(other) {\n  return new Vector(this.x + other.x, this.y + other.y);\n};\n\nVector.prototype.minus = function(other) {\n  return new Vector(this.x - other.x, this.y - other.y);\n};\n\nObject.defineProperty(Vector.prototype, "length", {\n  get: function() {\n    return Math.sqrt(this.x * this.x + this.y * this.y);\n  }\n});\n\nconsole.log(new Vector(1, 2).plus(new Vector(2, 3)));\n// → Vector{x: 3, y: 5}\nconsole.log(new Vector(1, 2).minus(new Vector(2, 3)));\n// → Vector{x: -1, y: -1}\nconsole.log(new Vector(3, 4).length);\n// → 5',
+  trace: 
+   [ { event: 'uncaught_exception',
+       exception_msg: 'Unexpected token {',
+       line: 6,
+       col: 44 } ] }
diff --git a/v4-cokapi/backends/javascript/tests/syntax-error2.js b/v4-cokapi/backends/javascript/tests/syntax-error2.js
new file mode 100644
index 000000000..6204b845f
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/syntax-error2.js
@@ -0,0 +1,25 @@
+function Vector(x, y) {
+  this.x = x;
+  this.y = y;
+}
+
+Vector.prototype.plus = xxxfunction(other) {
+  return new Vector(this.x + other.x, this.y + other.y);
+};
+
+Vector.prototype.minus = function(other) {
+  return new Vector(this.x - other.x, this.y - other.y);
+};
+
+Object.defineProperty(Vector.prototype, "length", {
+  get: function() {
+    return Math.sqrt(this.x * this.x + this.y * this.y);
+  }
+});
+
+console.log(new Vector(1, 2).plus(new Vector(2, 3)));
+// → Vector{x: 3, y: 5}
+console.log(new Vector(1, 2).minus(new Vector(2, 3)));
+// → Vector{x: -1, y: -1}
+console.log(new Vector(3, 4).length);
+// → 5
diff --git a/v4-cokapi/backends/javascript/tests/var-shadowing.golden b/v4-cokapi/backends/javascript/tests/var-shadowing.golden
new file mode 100644
index 000000000..c189a1323
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/var-shadowing.golden
@@ -0,0 +1,299 @@
+{ code: 'var x = 10; // global\nfunction foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}\nfoo();',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: [ 'JS_SPECIAL_VAL', 'undefined' ], foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 11,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 10 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 9,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 10 } },
+          { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x' ],
+            encoded_locals: { y: [ 'JS_SPECIAL_VAL', 'undefined' ], 'parent:x': 10 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 5,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 10 } },
+          { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x' ],
+            encoded_locals: { y: 10, 'parent:x': 10 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 20 } },
+          { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x' ],
+            encoded_locals: { y: 10, 'parent:x': 20 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '20 10\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: false,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 20 } },
+          { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x', '__return__' ],
+            encoded_locals: 
+             { y: 10,
+               'parent:x': 20,
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 7,
+       col: 2,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '20 10\n',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x', '__return__' ],
+            encoded_locals: 
+             { bar: [ 'REF', 2 ],
+               x: 20,
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 10,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '20 10\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 10, foo: [ 'REF', 1 ] },
+       ordered_globals: [ 'x', 'foo' ],
+       line: 11,
+       col: 6,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  bar();\n}',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/var-shadowing.js b/v4-cokapi/backends/javascript/tests/var-shadowing.js
new file mode 100644
index 000000000..84f14184b
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/var-shadowing.js
@@ -0,0 +1,11 @@
+var x = 10; // global
+function foo() {
+  var x = 10;
+  function bar() {
+    var y = x;
+    x *= 2;
+    console.log(x, y);
+  }
+  bar();
+}
+foo();
diff --git a/v4-cokapi/backends/javascript/tests/var-shadowing2.golden b/v4-cokapi/backends/javascript/tests/var-shadowing2.golden
new file mode 100644
index 000000000..ba377214b
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/var-shadowing2.golden
@@ -0,0 +1,302 @@
+{ code: 'var x = 10; // global\nfunction foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}\nvar b = foo();\n// x inside of bar should be the x in foo, *not* the global x\nb();',
+  trace: 
+   [ { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { x: [ 'JS_SPECIAL_VAL', 'undefined' ],
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 1,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: 
+        { x: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 11,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: 
+        { x: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 3,
+       col: 2,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 10 } } ],
+       globals: 
+        { x: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 9,
+       col: 2,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'foo',
+       stack_to_render: 
+        [ { func_name: 'foo',
+            frame_id: 2,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'foo_f2',
+            ordered_varnames: [ 'bar', 'x', '__return__' ],
+            encoded_locals: { bar: [ 'REF', 2 ], x: 10, __return__: [ 'REF', 2 ] } } ],
+       globals: 
+        { x: 10,
+          foo: [ 'REF', 1 ],
+          b: [ 'JS_SPECIAL_VAL', 'undefined' ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 9,
+       col: 0,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 13,
+       col: 0,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x' ],
+            encoded_locals: { y: [ 'JS_SPECIAL_VAL', 'undefined' ], 'parent:x': 10 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 5,
+       col: 4,
+       event: 'call',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x' ],
+            encoded_locals: { y: 10, 'parent:x': 10 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 6,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x' ],
+            encoded_locals: { y: 10, 'parent:x': 20 } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 7,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '20 10\n',
+       func_name: 'bar',
+       stack_to_render: 
+        [ { func_name: 'bar',
+            frame_id: 3,
+            is_highlighted: true,
+            is_parent: false,
+            is_zombie: false,
+            parent_frame_id_list: [],
+            unique_hash: 'bar_f3',
+            ordered_varnames: [ 'y', 'parent:x', '__return__' ],
+            encoded_locals: 
+             { y: 10,
+               'parent:x': 20,
+               __return__: [ 'JS_SPECIAL_VAL', 'undefined' ] } } ],
+       globals: { x: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 7,
+       col: 2,
+       event: 'return',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } },
+     { stdout: '20 10\n',
+       func_name: '',
+       stack_to_render: [],
+       globals: { x: 10, foo: [ 'REF', 1 ], b: [ 'REF', 2 ] },
+       ordered_globals: [ 'x', 'foo', 'b' ],
+       line: 13,
+       col: 4,
+       event: 'step_line',
+       heap: 
+        { '1': 
+           [ 'JS_FUNCTION',
+             'foo',
+             'function foo() {\n  var x = 10;\n  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }\n  return bar;\n}',
+             null,
+             null ],
+          '2': 
+           [ 'JS_FUNCTION',
+             'bar',
+             '  function bar() {\n    var y = x;\n    x *= 2;\n    console.log(x, y);\n  }',
+             null,
+             null ] } } ] }
diff --git a/v4-cokapi/backends/javascript/tests/var-shadowing2.js b/v4-cokapi/backends/javascript/tests/var-shadowing2.js
new file mode 100644
index 000000000..0b4853d51
--- /dev/null
+++ b/v4-cokapi/backends/javascript/tests/var-shadowing2.js
@@ -0,0 +1,13 @@
+var x = 10; // global
+function foo() {
+  var x = 10;
+  function bar() {
+    var y = x;
+    x *= 2;
+    console.log(x, y);
+  }
+  return bar;
+}
+var b = foo();
+// x inside of bar should be the x in foo, *not* the global x
+b(); 
diff --git a/v4-cokapi/backends/javascript/v8-reference-code/include/v8-debug.h b/v4-cokapi/backends/javascript/v8-reference-code/include/v8-debug.h
new file mode 100644
index 000000000..6abf4e095
--- /dev/null
+++ b/v4-cokapi/backends/javascript/v8-reference-code/include/v8-debug.h
@@ -0,0 +1,270 @@
+// Copyright 2008 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_V8_DEBUG_H_
+#define V8_V8_DEBUG_H_
+
+#include "v8.h"
+
+/**
+ * Debugger support for the V8 JavaScript engine.
+ */
+namespace v8 {
+
+// Debug events which can occur in the V8 JavaScript engine.
+enum DebugEvent {
+  Break = 1,
+  Exception = 2,
+  NewFunction = 3,
+  BeforeCompile = 4,
+  AfterCompile  = 5,
+  CompileError = 6,
+  PromiseEvent = 7,
+  AsyncTaskEvent = 8,
+  BreakForCommand = 9
+};
+
+
+class V8_EXPORT Debug {
+ public:
+  /**
+   * A client object passed to the v8 debugger whose ownership will be taken by
+   * it. v8 is always responsible for deleting the object.
+   */
+  class ClientData {
+   public:
+    virtual ~ClientData() {}
+  };
+
+
+  /**
+   * A message object passed to the debug message handler.
+   */
+  class Message {
+   public:
+    /**
+     * Check type of message.
+     */
+    virtual bool IsEvent() const = 0;
+    virtual bool IsResponse() const = 0;
+    virtual DebugEvent GetEvent() const = 0;
+
+    /**
+     * Indicate whether this is a response to a continue command which will
+     * start the VM running after this is processed.
+     */
+    virtual bool WillStartRunning() const = 0;
+
+    /**
+     * Access to execution state and event data. Don't store these cross
+     * callbacks as their content becomes invalid. These objects are from the
+     * debugger event that started the debug message loop.
+     */
+    virtual Handle<Object> GetExecutionState() const = 0;
+    virtual Handle<Object> GetEventData() const = 0;
+
+    /**
+     * Get the debugger protocol JSON.
+     */
+    virtual Handle<String> GetJSON() const = 0;
+
+    /**
+     * Get the context active when the debug event happened. Note this is not
+     * the current active context as the JavaScript part of the debugger is
+     * running in its own context which is entered at this point.
+     */
+    virtual Handle<Context> GetEventContext() const = 0;
+
+    /**
+     * Client data passed with the corresponding request if any. This is the
+     * client_data data value passed into Debug::SendCommand along with the
+     * request that led to the message or NULL if the message is an event. The
+     * debugger takes ownership of the data and will delete it even if there is
+     * no message handler.
+     */
+    virtual ClientData* GetClientData() const = 0;
+
+    virtual Isolate* GetIsolate() const = 0;
+
+    virtual ~Message() {}
+  };
+
+
+  /**
+   * An event details object passed to the debug event listener.
+   */
+  class EventDetails {
+   public:
+    /**
+     * Event type.
+     */
+    virtual DebugEvent GetEvent() const = 0;
+
+    /**
+     * Access to execution state and event data of the debug event. Don't store
+     * these cross callbacks as their content becomes invalid.
+     */
+    virtual Handle<Object> GetExecutionState() const = 0;
+    virtual Handle<Object> GetEventData() const = 0;
+
+    /**
+     * Get the context active when the debug event happened. Note this is not
+     * the current active context as the JavaScript part of the debugger is
+     * running in its own context which is entered at this point.
+     */
+    virtual Handle<Context> GetEventContext() const = 0;
+
+    /**
+     * Client data passed with the corresponding callback when it was
+     * registered.
+     */
+    virtual Handle<Value> GetCallbackData() const = 0;
+
+    /**
+     * Client data passed to DebugBreakForCommand function. The
+     * debugger takes ownership of the data and will delete it even if
+     * there is no message handler.
+     */
+    virtual ClientData* GetClientData() const = 0;
+
+    virtual ~EventDetails() {}
+  };
+
+  /**
+   * Debug event callback function.
+   *
+   * \param event_details object providing information about the debug event
+   *
+   * A EventCallback2 does not take possession of the event data,
+   * and must not rely on the data persisting after the handler returns.
+   */
+  typedef void (*EventCallback)(const EventDetails& event_details);
+
+  /**
+   * Debug message callback function.
+   *
+   * \param message the debug message handler message object
+   *
+   * A MessageHandler2 does not take possession of the message data,
+   * and must not rely on the data persisting after the handler returns.
+   */
+  typedef void (*MessageHandler)(const Message& message);
+
+  /**
+   * Callback function for the host to ensure debug messages are processed.
+   */
+  typedef void (*DebugMessageDispatchHandler)();
+
+  static bool SetDebugEventListener(EventCallback that,
+                                    Handle<Value> data = Handle<Value>());
+
+  // Schedule a debugger break to happen when JavaScript code is run
+  // in the given isolate.
+  static void DebugBreak(Isolate* isolate);
+
+  // Remove scheduled debugger break in given isolate if it has not
+  // happened yet.
+  static void CancelDebugBreak(Isolate* isolate);
+
+  // Check if a debugger break is scheduled in the given isolate.
+  static bool CheckDebugBreak(Isolate* isolate);
+
+  // Break execution of JavaScript in the given isolate (this method
+  // can be invoked from a non-VM thread) for further client command
+  // execution on a VM thread. Client data is then passed in
+  // EventDetails to EventCallback2 at the moment when the VM actually
+  // stops.
+  static void DebugBreakForCommand(Isolate* isolate, ClientData* data);
+
+  // Message based interface. The message protocol is JSON.
+  static void SetMessageHandler(MessageHandler handler);
+
+  static void SendCommand(Isolate* isolate,
+                          const uint16_t* command, int length,
+                          ClientData* client_data = NULL);
+
+ /**
+  * Run a JavaScript function in the debugger.
+  * \param fun the function to call
+  * \param data passed as second argument to the function
+  * With this call the debugger is entered and the function specified is called
+  * with the execution state as the first argument. This makes it possible to
+  * get access to information otherwise not available during normal JavaScript
+  * execution e.g. details on stack frames. Receiver of the function call will
+  * be the debugger context global object, however this is a subject to change.
+  * The following example shows a JavaScript function which when passed to
+  * v8::Debug::Call will return the current line of JavaScript execution.
+  *
+  * \code
+  *   function frame_source_line(exec_state) {
+  *     return exec_state.frame(0).sourceLine();
+  *   }
+  * \endcode
+  */
+  static Local<Value> Call(v8::Handle<v8::Function> fun,
+                           Handle<Value> data = Handle<Value>());
+
+  /**
+   * Returns a mirror object for the given object.
+   */
+  static Local<Value> GetMirror(v8::Handle<v8::Value> obj);
+
+  /**
+   * Makes V8 process all pending debug messages.
+   *
+   * From V8 point of view all debug messages come asynchronously (e.g. from
+   * remote debugger) but they all must be handled synchronously: V8 cannot
+   * do 2 things at one time so normal script execution must be interrupted
+   * for a while.
+   *
+   * Generally when message arrives V8 may be in one of 3 states:
+   * 1. V8 is running script; V8 will automatically interrupt and process all
+   * pending messages;
+   * 2. V8 is suspended on debug breakpoint; in this state V8 is dedicated
+   * to reading and processing debug messages;
+   * 3. V8 is not running at all or has called some long-working C++ function;
+   * by default it means that processing of all debug messages will be deferred
+   * until V8 gets control again; however, embedding application may improve
+   * this by manually calling this method.
+   *
+   * Technically this method in many senses is equivalent to executing empty
+   * script:
+   * 1. It does nothing except for processing all pending debug messages.
+   * 2. It should be invoked with the same precautions and from the same context
+   * as V8 script would be invoked from, because:
+   *   a. with "evaluate" command it can do whatever normal script can do,
+   *   including all native calls;
+   *   b. no other thread should call V8 while this method is running
+   *   (v8::Locker may be used here).
+   *
+   * "Evaluate" debug command behavior currently is not specified in scope
+   * of this method.
+   */
+  static void ProcessDebugMessages();
+
+  /**
+   * Debugger is running in its own context which is entered while debugger
+   * messages are being dispatched. This is an explicit getter for this
+   * debugger context. Note that the content of the debugger context is subject
+   * to change.
+   */
+  static Local<Context> GetDebugContext();
+
+
+  /**
+   * Enable/disable LiveEdit functionality for the given Isolate
+   * (default Isolate if not provided). V8 will abort if LiveEdit is
+   * unexpectedly used. LiveEdit is enabled by default.
+   */
+  static void SetLiveEditEnabled(Isolate* isolate, bool enable);
+};
+
+
+}  // namespace v8
+
+
+#undef EXPORT
+
+
+#endif  // V8_V8_DEBUG_H_
diff --git a/v4-cokapi/backends/javascript/v8-reference-code/src/debug-debugger.js b/v4-cokapi/backends/javascript/v8-reference-code/src/debug-debugger.js
new file mode 100644
index 000000000..09f479e1e
--- /dev/null
+++ b/v4-cokapi/backends/javascript/v8-reference-code/src/debug-debugger.js
@@ -0,0 +1,2590 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+"use strict";
+
+// Default number of frames to include in the response to backtrace request.
+var kDefaultBacktraceLength = 10;
+
+var Debug = {};
+
+// Regular expression to skip "crud" at the beginning of a source line which is
+// not really code. Currently the regular expression matches whitespace and
+// comments.
+var sourceLineBeginningSkip = /^(?:\s*(?:\/\*.*?\*\/)*)*/;
+
+// Debug events which can occour in the V8 JavaScript engine. These originate
+// from the API include file debug.h.
+Debug.DebugEvent = { Break: 1,
+                     Exception: 2,
+                     NewFunction: 3,
+                     BeforeCompile: 4,
+                     AfterCompile: 5,
+                     CompileError: 6,
+                     PromiseEvent: 7,
+                     AsyncTaskEvent: 8,
+                     BreakForCommand: 9 };
+
+// Types of exceptions that can be broken upon.
+Debug.ExceptionBreak = { Caught : 0,
+                         Uncaught: 1 };
+
+// The different types of steps.
+Debug.StepAction = { StepOut: 0,
+                     StepNext: 1,
+                     StepIn: 2,
+                     StepMin: 3,
+                     StepInMin: 4,
+                     StepFrame: 5 };
+
+// The different types of scripts matching enum ScriptType in objects.h.
+Debug.ScriptType = { Native: 0,
+                     Extension: 1,
+                     Normal: 2 };
+
+// The different types of script compilations matching enum
+// Script::CompilationType in objects.h.
+Debug.ScriptCompilationType = { Host: 0,
+                                Eval: 1,
+                                JSON: 2 };
+
+// The different script break point types.
+Debug.ScriptBreakPointType = { ScriptId: 0,
+                               ScriptName: 1,
+                               ScriptRegExp: 2 };
+
+// The different types of breakpoint position alignments.
+// Must match BreakPositionAlignment in debug.h.
+Debug.BreakPositionAlignment = {
+  Statement: 0,
+  BreakPosition: 1
+};
+
+function ScriptTypeFlag(type) {
+  return (1 << type);
+}
+
+// Globals.
+var next_response_seq = 0;
+var next_break_point_number = 1;
+var break_points = [];
+var script_break_points = [];
+var debugger_flags = {
+  breakPointsActive: {
+    value: true,
+    getValue: function() { return this.value; },
+    setValue: function(value) {
+      this.value = !!value;
+      %SetDisableBreak(!this.value);
+    }
+  },
+  breakOnCaughtException: {
+    getValue: function() { return Debug.isBreakOnException(); },
+    setValue: function(value) {
+      if (value) {
+        Debug.setBreakOnException();
+      } else {
+        Debug.clearBreakOnException();
+      }
+    }
+  },
+  breakOnUncaughtException: {
+    getValue: function() { return Debug.isBreakOnUncaughtException(); },
+    setValue: function(value) {
+      if (value) {
+        Debug.setBreakOnUncaughtException();
+      } else {
+        Debug.clearBreakOnUncaughtException();
+      }
+    }
+  },
+};
+
+
+// Create a new break point object and add it to the list of break points.
+function MakeBreakPoint(source_position, opt_script_break_point) {
+  var break_point = new BreakPoint(source_position, opt_script_break_point);
+  break_points.push(break_point);
+  return break_point;
+}
+
+
+// Object representing a break point.
+// NOTE: This object does not have a reference to the function having break
+// point as this would cause function not to be garbage collected when it is
+// not used any more. We do not want break points to keep functions alive.
+function BreakPoint(source_position, opt_script_break_point) {
+  this.source_position_ = source_position;
+  if (opt_script_break_point) {
+    this.script_break_point_ = opt_script_break_point;
+  } else {
+    this.number_ = next_break_point_number++;
+  }
+  this.hit_count_ = 0;
+  this.active_ = true;
+  this.condition_ = null;
+  this.ignoreCount_ = 0;
+}
+
+
+BreakPoint.prototype.number = function() {
+  return this.number_;
+};
+
+
+BreakPoint.prototype.func = function() {
+  return this.func_;
+};
+
+
+BreakPoint.prototype.source_position = function() {
+  return this.source_position_;
+};
+
+
+BreakPoint.prototype.hit_count = function() {
+  return this.hit_count_;
+};
+
+
+BreakPoint.prototype.active = function() {
+  if (this.script_break_point()) {
+    return this.script_break_point().active();
+  }
+  return this.active_;
+};
+
+
+BreakPoint.prototype.condition = function() {
+  if (this.script_break_point() && this.script_break_point().condition()) {
+    return this.script_break_point().condition();
+  }
+  return this.condition_;
+};
+
+
+BreakPoint.prototype.ignoreCount = function() {
+  return this.ignoreCount_;
+};
+
+
+BreakPoint.prototype.script_break_point = function() {
+  return this.script_break_point_;
+};
+
+
+BreakPoint.prototype.enable = function() {
+  this.active_ = true;
+};
+
+
+BreakPoint.prototype.disable = function() {
+  this.active_ = false;
+};
+
+
+BreakPoint.prototype.setCondition = function(condition) {
+  this.condition_ = condition;
+};
+
+
+BreakPoint.prototype.setIgnoreCount = function(ignoreCount) {
+  this.ignoreCount_ = ignoreCount;
+};
+
+
+BreakPoint.prototype.isTriggered = function(exec_state) {
+  // Break point not active - not triggered.
+  if (!this.active()) return false;
+
+  // Check for conditional break point.
+  if (this.condition()) {
+    // If break point has condition try to evaluate it in the top frame.
+    try {
+      var mirror = exec_state.frame(0).evaluate(this.condition());
+      // If no sensible mirror or non true value break point not triggered.
+      if (!(mirror instanceof ValueMirror) || !%ToBoolean(mirror.value_)) {
+        return false;
+      }
+    } catch (e) {
+      // Exception evaluating condition counts as not triggered.
+      return false;
+    }
+  }
+
+  // Update the hit count.
+  this.hit_count_++;
+  if (this.script_break_point_) {
+    this.script_break_point_.hit_count_++;
+  }
+
+  // If the break point has an ignore count it is not triggered.
+  if (this.ignoreCount_ > 0) {
+    this.ignoreCount_--;
+    return false;
+  }
+
+  // Break point triggered.
+  return true;
+};
+
+
+// Function called from the runtime when a break point is hit. Returns true if
+// the break point is triggered and supposed to break execution.
+function IsBreakPointTriggered(break_id, break_point) {
+  return break_point.isTriggered(MakeExecutionState(break_id));
+}
+
+
+// Object representing a script break point. The script is referenced by its
+// script name or script id and the break point is represented as line and
+// column.
+function ScriptBreakPoint(type, script_id_or_name, opt_line, opt_column,
+                          opt_groupId, opt_position_alignment) {
+  this.type_ = type;
+  if (type == Debug.ScriptBreakPointType.ScriptId) {
+    this.script_id_ = script_id_or_name;
+  } else if (type == Debug.ScriptBreakPointType.ScriptName) {
+    this.script_name_ = script_id_or_name;
+  } else if (type == Debug.ScriptBreakPointType.ScriptRegExp) {
+    this.script_regexp_object_ = new RegExp(script_id_or_name);
+  } else {
+    throw new Error("Unexpected breakpoint type " + type);
+  }
+  this.line_ = opt_line || 0;
+  this.column_ = opt_column;
+  this.groupId_ = opt_groupId;
+  this.position_alignment_ = IS_UNDEFINED(opt_position_alignment)
+      ? Debug.BreakPositionAlignment.Statement : opt_position_alignment;
+  this.hit_count_ = 0;
+  this.active_ = true;
+  this.condition_ = null;
+  this.ignoreCount_ = 0;
+  this.break_points_ = [];
+}
+
+
+//Creates a clone of script breakpoint that is linked to another script.
+ScriptBreakPoint.prototype.cloneForOtherScript = function (other_script) {
+  var copy = new ScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId,
+      other_script.id, this.line_, this.column_, this.groupId_,
+      this.position_alignment_);
+  copy.number_ = next_break_point_number++;
+  script_break_points.push(copy);
+
+  copy.hit_count_ = this.hit_count_;
+  copy.active_ = this.active_;
+  copy.condition_ = this.condition_;
+  copy.ignoreCount_ = this.ignoreCount_;
+  return copy;
+};
+
+
+ScriptBreakPoint.prototype.number = function() {
+  return this.number_;
+};
+
+
+ScriptBreakPoint.prototype.groupId = function() {
+  return this.groupId_;
+};
+
+
+ScriptBreakPoint.prototype.type = function() {
+  return this.type_;
+};
+
+
+ScriptBreakPoint.prototype.script_id = function() {
+  return this.script_id_;
+};
+
+
+ScriptBreakPoint.prototype.script_name = function() {
+  return this.script_name_;
+};
+
+
+ScriptBreakPoint.prototype.script_regexp_object = function() {
+  return this.script_regexp_object_;
+};
+
+
+ScriptBreakPoint.prototype.line = function() {
+  return this.line_;
+};
+
+
+ScriptBreakPoint.prototype.column = function() {
+  return this.column_;
+};
+
+
+ScriptBreakPoint.prototype.actual_locations = function() {
+  var locations = [];
+  for (var i = 0; i < this.break_points_.length; i++) {
+    locations.push(this.break_points_[i].actual_location);
+  }
+  return locations;
+};
+
+
+ScriptBreakPoint.prototype.update_positions = function(line, column) {
+  this.line_ = line;
+  this.column_ = column;
+};
+
+
+ScriptBreakPoint.prototype.hit_count = function() {
+  return this.hit_count_;
+};
+
+
+ScriptBreakPoint.prototype.active = function() {
+  return this.active_;
+};
+
+
+ScriptBreakPoint.prototype.condition = function() {
+  return this.condition_;
+};
+
+
+ScriptBreakPoint.prototype.ignoreCount = function() {
+  return this.ignoreCount_;
+};
+
+
+ScriptBreakPoint.prototype.enable = function() {
+  this.active_ = true;
+};
+
+
+ScriptBreakPoint.prototype.disable = function() {
+  this.active_ = false;
+};
+
+
+ScriptBreakPoint.prototype.setCondition = function(condition) {
+  this.condition_ = condition;
+};
+
+
+ScriptBreakPoint.prototype.setIgnoreCount = function(ignoreCount) {
+  this.ignoreCount_ = ignoreCount;
+
+  // Set ignore count on all break points created from this script break point.
+  for (var i = 0; i < this.break_points_.length; i++) {
+    this.break_points_[i].setIgnoreCount(ignoreCount);
+  }
+};
+
+
+// Check whether a script matches this script break point. Currently this is
+// only based on script name.
+ScriptBreakPoint.prototype.matchesScript = function(script) {
+  if (this.type_ == Debug.ScriptBreakPointType.ScriptId) {
+    return this.script_id_ == script.id;
+  } else {
+    // We might want to account columns here as well.
+    if (!(script.line_offset <= this.line_  &&
+          this.line_ < script.line_offset + script.lineCount())) {
+      return false;
+    }
+    if (this.type_ == Debug.ScriptBreakPointType.ScriptName) {
+      return this.script_name_ == script.nameOrSourceURL();
+    } else if (this.type_ == Debug.ScriptBreakPointType.ScriptRegExp) {
+      return this.script_regexp_object_.test(script.nameOrSourceURL());
+    } else {
+      throw new Error("Unexpected breakpoint type " + this.type_);
+    }
+  }
+};
+
+
+// Set the script break point in a script.
+ScriptBreakPoint.prototype.set = function (script) {
+  var column = this.column();
+  var line = this.line();
+  // If the column is undefined the break is on the line. To help locate the
+  // first piece of breakable code on the line try to find the column on the
+  // line which contains some source.
+  if (IS_UNDEFINED(column)) {
+    var source_line = script.sourceLine(this.line());
+
+    // Allocate array for caching the columns where the actual source starts.
+    if (!script.sourceColumnStart_) {
+      script.sourceColumnStart_ = new Array(script.lineCount());
+    }
+
+    // Fill cache if needed and get column where the actual source starts.
+    if (IS_UNDEFINED(script.sourceColumnStart_[line])) {
+      script.sourceColumnStart_[line] =
+          source_line.match(sourceLineBeginningSkip)[0].length;
+    }
+    column = script.sourceColumnStart_[line];
+  }
+
+  // Convert the line and column into an absolute position within the script.
+  var position = Debug.findScriptSourcePosition(script, this.line(), column);
+
+  // If the position is not found in the script (the script might be shorter
+  // than it used to be) just ignore it.
+  if (IS_NULL(position)) return;
+
+  // Create a break point object and set the break point.
+  var break_point = MakeBreakPoint(position, this);
+  break_point.setIgnoreCount(this.ignoreCount());
+  var actual_position = %SetScriptBreakPoint(script, position,
+                                             this.position_alignment_,
+                                             break_point);
+  if (IS_UNDEFINED(actual_position)) {
+    actual_position = position;
+  }
+  var actual_location = script.locationFromPosition(actual_position, true);
+  break_point.actual_location = { line: actual_location.line,
+                                  column: actual_location.column,
+                                  script_id: script.id };
+  this.break_points_.push(break_point);
+  return break_point;
+};
+
+
+// Clear all the break points created from this script break point
+ScriptBreakPoint.prototype.clear = function () {
+  var remaining_break_points = [];
+  for (var i = 0; i < break_points.length; i++) {
+    if (break_points[i].script_break_point() &&
+        break_points[i].script_break_point() === this) {
+      %ClearBreakPoint(break_points[i]);
+    } else {
+      remaining_break_points.push(break_points[i]);
+    }
+  }
+  break_points = remaining_break_points;
+  this.break_points_ = [];
+};
+
+
+// Function called from runtime when a new script is compiled to set any script
+// break points set in this script.
+function UpdateScriptBreakPoints(script) {
+  for (var i = 0; i < script_break_points.length; i++) {
+    var break_point = script_break_points[i];
+    if ((break_point.type() == Debug.ScriptBreakPointType.ScriptName ||
+         break_point.type() == Debug.ScriptBreakPointType.ScriptRegExp) &&
+        break_point.matchesScript(script)) {
+      break_point.set(script);
+    }
+  }
+}
+
+
+function GetScriptBreakPoints(script) {
+  var result = [];
+  for (var i = 0; i < script_break_points.length; i++) {
+    if (script_break_points[i].matchesScript(script)) {
+      result.push(script_break_points[i]);
+    }
+  }
+  return result;
+}
+
+
+Debug.setListener = function(listener, opt_data) {
+  if (!IS_FUNCTION(listener) && !IS_UNDEFINED(listener) && !IS_NULL(listener)) {
+    throw new Error('Parameters have wrong types.');
+  }
+  %SetDebugEventListener(listener, opt_data);
+};
+
+
+Debug.breakExecution = function(f) {
+  %Break();
+};
+
+Debug.breakLocations = function(f, opt_position_aligment) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  var position_aligment = IS_UNDEFINED(opt_position_aligment)
+      ? Debug.BreakPositionAlignment.Statement : opt_position_aligment;
+  return %GetBreakLocations(f, position_aligment);
+};
+
+// Returns a Script object. If the parameter is a function the return value
+// is the script in which the function is defined. If the parameter is a string
+// the return value is the script for which the script name has that string
+// value.  If it is a regexp and there is a unique script whose name matches
+// we return that, otherwise undefined.
+Debug.findScript = function(func_or_script_name) {
+  if (IS_FUNCTION(func_or_script_name)) {
+    return %FunctionGetScript(func_or_script_name);
+  } else if (IS_REGEXP(func_or_script_name)) {
+    var scripts = Debug.scripts();
+    var last_result = null;
+    var result_count = 0;
+    for (var i in scripts) {
+      var script = scripts[i];
+      if (func_or_script_name.test(script.name)) {
+        last_result = script;
+        result_count++;
+      }
+    }
+    // Return the unique script matching the regexp.  If there are more
+    // than one we don't return a value since there is no good way to
+    // decide which one to return.  Returning a "random" one, say the
+    // first, would introduce nondeterminism (or something close to it)
+    // because the order is the heap iteration order.
+    if (result_count == 1) {
+      return last_result;
+    } else {
+      return undefined;
+    }
+  } else {
+    return %GetScript(func_or_script_name);
+  }
+};
+
+// Returns the script source. If the parameter is a function the return value
+// is the script source for the script in which the function is defined. If the
+// parameter is a string the return value is the script for which the script
+// name has that string value.
+Debug.scriptSource = function(func_or_script_name) {
+  return this.findScript(func_or_script_name).source;
+};
+
+Debug.source = function(f) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  return %FunctionGetSourceCode(f);
+};
+
+Debug.disassemble = function(f) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  return %DebugDisassembleFunction(f);
+};
+
+Debug.disassembleConstructor = function(f) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  return %DebugDisassembleConstructor(f);
+};
+
+Debug.ExecuteInDebugContext = function(f, without_debugger) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  return %ExecuteInDebugContext(f, !!without_debugger);
+};
+
+Debug.sourcePosition = function(f) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  return %FunctionGetScriptSourcePosition(f);
+};
+
+
+Debug.findFunctionSourceLocation = function(func, opt_line, opt_column) {
+  var script = %FunctionGetScript(func);
+  var script_offset = %FunctionGetScriptSourcePosition(func);
+  return script.locationFromLine(opt_line, opt_column, script_offset);
+};
+
+
+// Returns the character position in a script based on a line number and an
+// optional position within that line.
+Debug.findScriptSourcePosition = function(script, opt_line, opt_column) {
+  var location = script.locationFromLine(opt_line, opt_column);
+  return location ? location.position : null;
+};
+
+
+Debug.findBreakPoint = function(break_point_number, remove) {
+  var break_point;
+  for (var i = 0; i < break_points.length; i++) {
+    if (break_points[i].number() == break_point_number) {
+      break_point = break_points[i];
+      // Remove the break point from the list if requested.
+      if (remove) {
+        break_points.splice(i, 1);
+      }
+      break;
+    }
+  }
+  if (break_point) {
+    return break_point;
+  } else {
+    return this.findScriptBreakPoint(break_point_number, remove);
+  }
+};
+
+Debug.findBreakPointActualLocations = function(break_point_number) {
+  for (var i = 0; i < script_break_points.length; i++) {
+    if (script_break_points[i].number() == break_point_number) {
+      return script_break_points[i].actual_locations();
+    }
+  }
+  for (var i = 0; i < break_points.length; i++) {
+    if (break_points[i].number() == break_point_number) {
+      return [break_points[i].actual_location];
+    }
+  }
+  return [];
+};
+
+Debug.setBreakPoint = function(func, opt_line, opt_column, opt_condition) {
+  if (!IS_FUNCTION(func)) throw new Error('Parameters have wrong types.');
+  // Break points in API functions are not supported.
+  if (%FunctionIsAPIFunction(func)) {
+    throw new Error('Cannot set break point in native code.');
+  }
+  // Find source position relative to start of the function
+  var break_position =
+      this.findFunctionSourceLocation(func, opt_line, opt_column).position;
+  var source_position = break_position - this.sourcePosition(func);
+  // Find the script for the function.
+  var script = %FunctionGetScript(func);
+  // Break in builtin JavaScript code is not supported.
+  if (script.type == Debug.ScriptType.Native) {
+    throw new Error('Cannot set break point in native code.');
+  }
+  // If the script for the function has a name convert this to a script break
+  // point.
+  if (script && script.id) {
+    // Adjust the source position to be script relative.
+    source_position += %FunctionGetScriptSourcePosition(func);
+    // Find line and column for the position in the script and set a script
+    // break point from that.
+    var location = script.locationFromPosition(source_position, false);
+    return this.setScriptBreakPointById(script.id,
+                                        location.line, location.column,
+                                        opt_condition);
+  } else {
+    // Set a break point directly on the function.
+    var break_point = MakeBreakPoint(source_position);
+    var actual_position =
+        %SetFunctionBreakPoint(func, source_position, break_point);
+    actual_position += this.sourcePosition(func);
+    var actual_location = script.locationFromPosition(actual_position, true);
+    break_point.actual_location = { line: actual_location.line,
+                                    column: actual_location.column,
+                                    script_id: script.id };
+    break_point.setCondition(opt_condition);
+    return break_point.number();
+  }
+};
+
+
+Debug.setBreakPointByScriptIdAndPosition = function(script_id, position,
+                                                    condition, enabled,
+                                                    opt_position_alignment)
+{
+  var break_point = MakeBreakPoint(position);
+  break_point.setCondition(condition);
+  if (!enabled) {
+    break_point.disable();
+  }
+  var scripts = this.scripts();
+  var position_alignment = IS_UNDEFINED(opt_position_alignment)
+      ? Debug.BreakPositionAlignment.Statement : opt_position_alignment;
+  for (var i = 0; i < scripts.length; i++) {
+    if (script_id == scripts[i].id) {
+      break_point.actual_position = %SetScriptBreakPoint(scripts[i], position,
+          position_alignment, break_point);
+      break;
+    }
+  }
+  return break_point;
+};
+
+
+Debug.enableBreakPoint = function(break_point_number) {
+  var break_point = this.findBreakPoint(break_point_number, false);
+  // Only enable if the breakpoint hasn't been deleted:
+  if (break_point) {
+    break_point.enable();
+  }
+};
+
+
+Debug.disableBreakPoint = function(break_point_number) {
+  var break_point = this.findBreakPoint(break_point_number, false);
+  // Only enable if the breakpoint hasn't been deleted:
+  if (break_point) {
+    break_point.disable();
+  }
+};
+
+
+Debug.changeBreakPointCondition = function(break_point_number, condition) {
+  var break_point = this.findBreakPoint(break_point_number, false);
+  break_point.setCondition(condition);
+};
+
+
+Debug.changeBreakPointIgnoreCount = function(break_point_number, ignoreCount) {
+  if (ignoreCount < 0) {
+    throw new Error('Invalid argument');
+  }
+  var break_point = this.findBreakPoint(break_point_number, false);
+  break_point.setIgnoreCount(ignoreCount);
+};
+
+
+Debug.clearBreakPoint = function(break_point_number) {
+  var break_point = this.findBreakPoint(break_point_number, true);
+  if (break_point) {
+    return %ClearBreakPoint(break_point);
+  } else {
+    break_point = this.findScriptBreakPoint(break_point_number, true);
+    if (!break_point) {
+      throw new Error('Invalid breakpoint');
+    }
+  }
+};
+
+
+Debug.clearAllBreakPoints = function() {
+  for (var i = 0; i < break_points.length; i++) {
+    var break_point = break_points[i];
+    %ClearBreakPoint(break_point);
+  }
+  break_points = [];
+};
+
+
+Debug.disableAllBreakPoints = function() {
+  // Disable all user defined breakpoints:
+  for (var i = 1; i < next_break_point_number; i++) {
+    Debug.disableBreakPoint(i);
+  }
+  // Disable all exception breakpoints:
+  %ChangeBreakOnException(Debug.ExceptionBreak.Caught, false);
+  %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, false);
+};
+
+
+Debug.findScriptBreakPoint = function(break_point_number, remove) {
+  var script_break_point;
+  for (var i = 0; i < script_break_points.length; i++) {
+    if (script_break_points[i].number() == break_point_number) {
+      script_break_point = script_break_points[i];
+      // Remove the break point from the list if requested.
+      if (remove) {
+        script_break_point.clear();
+        script_break_points.splice(i,1);
+      }
+      break;
+    }
+  }
+  return script_break_point;
+};
+
+
+// Sets a breakpoint in a script identified through id or name at the
+// specified source line and column within that line.
+Debug.setScriptBreakPoint = function(type, script_id_or_name,
+                                     opt_line, opt_column, opt_condition,
+                                     opt_groupId, opt_position_alignment) {
+  // Create script break point object.
+  var script_break_point =
+      new ScriptBreakPoint(type, script_id_or_name, opt_line, opt_column,
+                           opt_groupId, opt_position_alignment);
+
+  // Assign number to the new script break point and add it.
+  script_break_point.number_ = next_break_point_number++;
+  script_break_point.setCondition(opt_condition);
+  script_break_points.push(script_break_point);
+
+  // Run through all scripts to see if this script break point matches any
+  // loaded scripts.
+  var scripts = this.scripts();
+  for (var i = 0; i < scripts.length; i++) {
+    if (script_break_point.matchesScript(scripts[i])) {
+      script_break_point.set(scripts[i]);
+    }
+  }
+
+  return script_break_point.number();
+};
+
+
+Debug.setScriptBreakPointById = function(script_id,
+                                         opt_line, opt_column,
+                                         opt_condition, opt_groupId,
+                                         opt_position_alignment) {
+  return this.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptId,
+                                  script_id, opt_line, opt_column,
+                                  opt_condition, opt_groupId,
+                                  opt_position_alignment);
+};
+
+
+Debug.setScriptBreakPointByName = function(script_name,
+                                           opt_line, opt_column,
+                                           opt_condition, opt_groupId) {
+  return this.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptName,
+                                  script_name, opt_line, opt_column,
+                                  opt_condition, opt_groupId);
+};
+
+
+Debug.setScriptBreakPointByRegExp = function(script_regexp,
+                                             opt_line, opt_column,
+                                             opt_condition, opt_groupId) {
+  return this.setScriptBreakPoint(Debug.ScriptBreakPointType.ScriptRegExp,
+                                  script_regexp, opt_line, opt_column,
+                                  opt_condition, opt_groupId);
+};
+
+
+Debug.enableScriptBreakPoint = function(break_point_number) {
+  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
+  script_break_point.enable();
+};
+
+
+Debug.disableScriptBreakPoint = function(break_point_number) {
+  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
+  script_break_point.disable();
+};
+
+
+Debug.changeScriptBreakPointCondition = function(
+    break_point_number, condition) {
+  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
+  script_break_point.setCondition(condition);
+};
+
+
+Debug.changeScriptBreakPointIgnoreCount = function(
+    break_point_number, ignoreCount) {
+  if (ignoreCount < 0) {
+    throw new Error('Invalid argument');
+  }
+  var script_break_point = this.findScriptBreakPoint(break_point_number, false);
+  script_break_point.setIgnoreCount(ignoreCount);
+};
+
+
+Debug.scriptBreakPoints = function() {
+  return script_break_points;
+};
+
+
+Debug.clearStepping = function() {
+  %ClearStepping();
+};
+
+Debug.setBreakOnException = function() {
+  return %ChangeBreakOnException(Debug.ExceptionBreak.Caught, true);
+};
+
+Debug.clearBreakOnException = function() {
+  return %ChangeBreakOnException(Debug.ExceptionBreak.Caught, false);
+};
+
+Debug.isBreakOnException = function() {
+  return !!%IsBreakOnException(Debug.ExceptionBreak.Caught);
+};
+
+Debug.setBreakOnUncaughtException = function() {
+  return %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, true);
+};
+
+Debug.clearBreakOnUncaughtException = function() {
+  return %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, false);
+};
+
+Debug.isBreakOnUncaughtException = function() {
+  return !!%IsBreakOnException(Debug.ExceptionBreak.Uncaught);
+};
+
+Debug.showBreakPoints = function(f, full, opt_position_alignment) {
+  if (!IS_FUNCTION(f)) throw new Error('Parameters have wrong types.');
+  var source = full ? this.scriptSource(f) : this.source(f);
+  var offset = full ? this.sourcePosition(f) : 0;
+  var locations = this.breakLocations(f, opt_position_alignment);
+  if (!locations) return source;
+  locations.sort(function(x, y) { return x - y; });
+  var result = "";
+  var prev_pos = 0;
+  var pos;
+  for (var i = 0; i < locations.length; i++) {
+    pos = locations[i] - offset;
+    result += source.slice(prev_pos, pos);
+    result += "[B" + i + "]";
+    prev_pos = pos;
+  }
+  pos = source.length;
+  result += source.substring(prev_pos, pos);
+  return result;
+};
+
+
+// Get all the scripts currently loaded. Locating all the scripts is based on
+// scanning the heap.
+Debug.scripts = function() {
+  // Collect all scripts in the heap.
+  return %DebugGetLoadedScripts();
+};
+
+
+Debug.debuggerFlags = function() {
+  return debugger_flags;
+};
+
+Debug.MakeMirror = MakeMirror;
+
+function MakeExecutionState(break_id) {
+  return new ExecutionState(break_id);
+}
+
+function ExecutionState(break_id) {
+  this.break_id = break_id;
+  this.selected_frame = 0;
+}
+
+ExecutionState.prototype.prepareStep = function(opt_action, opt_count,
+    opt_callframe) {
+  var action = Debug.StepAction.StepIn;
+  if (!IS_UNDEFINED(opt_action)) action = %ToNumber(opt_action);
+  var count = opt_count ? %ToNumber(opt_count) : 1;
+  var callFrameId = 0;
+  if (!IS_UNDEFINED(opt_callframe)) {
+    callFrameId = opt_callframe.details_.frameId();
+  }
+
+  return %PrepareStep(this.break_id, action, count, callFrameId);
+};
+
+ExecutionState.prototype.evaluateGlobal = function(source, disable_break,
+    opt_additional_context) {
+  return MakeMirror(%DebugEvaluateGlobal(this.break_id, source,
+                                         Boolean(disable_break),
+                                         opt_additional_context));
+};
+
+ExecutionState.prototype.frameCount = function() {
+  return %GetFrameCount(this.break_id);
+};
+
+ExecutionState.prototype.threadCount = function() {
+  return %GetThreadCount(this.break_id);
+};
+
+ExecutionState.prototype.frame = function(opt_index) {
+  // If no index supplied return the selected frame.
+  if (opt_index == null) opt_index = this.selected_frame;
+  if (opt_index < 0 || opt_index >= this.frameCount()) {
+    throw new Error('Illegal frame index.');
+  }
+  return new FrameMirror(this.break_id, opt_index);
+};
+
+ExecutionState.prototype.setSelectedFrame = function(index) {
+  var i = %ToNumber(index);
+  if (i < 0 || i >= this.frameCount()) throw new Error('Illegal frame index.');
+  this.selected_frame = i;
+};
+
+ExecutionState.prototype.selectedFrame = function() {
+  return this.selected_frame;
+};
+
+ExecutionState.prototype.debugCommandProcessor = function(opt_is_running) {
+  return new DebugCommandProcessor(this, opt_is_running);
+};
+
+
+function MakeBreakEvent(break_id, break_points_hit) {
+  return new BreakEvent(break_id, break_points_hit);
+}
+
+
+function BreakEvent(break_id, break_points_hit) {
+  this.frame_ = new FrameMirror(break_id, 0);
+  this.break_points_hit_ = break_points_hit;
+}
+
+
+BreakEvent.prototype.eventType = function() {
+  return Debug.DebugEvent.Break;
+};
+
+
+BreakEvent.prototype.func = function() {
+  return this.frame_.func();
+};
+
+
+BreakEvent.prototype.sourceLine = function() {
+  return this.frame_.sourceLine();
+};
+
+
+BreakEvent.prototype.sourceColumn = function() {
+  return this.frame_.sourceColumn();
+};
+
+
+BreakEvent.prototype.sourceLineText = function() {
+  return this.frame_.sourceLineText();
+};
+
+
+BreakEvent.prototype.breakPointsHit = function() {
+  return this.break_points_hit_;
+};
+
+
+BreakEvent.prototype.toJSONProtocol = function() {
+  var o = { seq: next_response_seq++,
+            type: "event",
+            event: "break",
+            body: { invocationText: this.frame_.invocationText() }
+          };
+
+  // Add script related information to the event if available.
+  var script = this.func().script();
+  if (script) {
+    o.body.sourceLine = this.sourceLine(),
+    o.body.sourceColumn = this.sourceColumn(),
+    o.body.sourceLineText = this.sourceLineText(),
+    o.body.script = MakeScriptObject_(script, false);
+  }
+
+  // Add an Array of break points hit if any.
+  if (this.breakPointsHit()) {
+    o.body.breakpoints = [];
+    for (var i = 0; i < this.breakPointsHit().length; i++) {
+      // Find the break point number. For break points originating from a
+      // script break point supply the script break point number.
+      var breakpoint = this.breakPointsHit()[i];
+      var script_break_point = breakpoint.script_break_point();
+      var number;
+      if (script_break_point) {
+        number = script_break_point.number();
+      } else {
+        number = breakpoint.number();
+      }
+      o.body.breakpoints.push(number);
+    }
+  }
+  return JSON.stringify(ObjectToProtocolObject_(o));
+};
+
+
+function MakeExceptionEvent(break_id, exception, uncaught, promise) {
+  return new ExceptionEvent(break_id, exception, uncaught, promise);
+}
+
+
+function ExceptionEvent(break_id, exception, uncaught, promise) {
+  this.exec_state_ = new ExecutionState(break_id);
+  this.exception_ = exception;
+  this.uncaught_ = uncaught;
+  this.promise_ = promise;
+}
+
+
+ExceptionEvent.prototype.eventType = function() {
+  return Debug.DebugEvent.Exception;
+};
+
+
+ExceptionEvent.prototype.exception = function() {
+  return this.exception_;
+};
+
+
+ExceptionEvent.prototype.uncaught = function() {
+  return this.uncaught_;
+};
+
+
+ExceptionEvent.prototype.promise = function() {
+  return this.promise_;
+};
+
+
+ExceptionEvent.prototype.func = function() {
+  return this.exec_state_.frame(0).func();
+};
+
+
+ExceptionEvent.prototype.sourceLine = function() {
+  return this.exec_state_.frame(0).sourceLine();
+};
+
+
+ExceptionEvent.prototype.sourceColumn = function() {
+  return this.exec_state_.frame(0).sourceColumn();
+};
+
+
+ExceptionEvent.prototype.sourceLineText = function() {
+  return this.exec_state_.frame(0).sourceLineText();
+};
+
+
+ExceptionEvent.prototype.toJSONProtocol = function() {
+  var o = new ProtocolMessage();
+  o.event = "exception";
+  o.body = { uncaught: this.uncaught_,
+             exception: MakeMirror(this.exception_)
+           };
+
+  // Exceptions might happen whithout any JavaScript frames.
+  if (this.exec_state_.frameCount() > 0) {
+    o.body.sourceLine = this.sourceLine();
+    o.body.sourceColumn = this.sourceColumn();
+    o.body.sourceLineText = this.sourceLineText();
+
+    // Add script information to the event if available.
+    var script = this.func().script();
+    if (script) {
+      o.body.script = MakeScriptObject_(script, false);
+    }
+  } else {
+    o.body.sourceLine = -1;
+  }
+
+  return o.toJSONProtocol();
+};
+
+
+function MakeCompileEvent(script, type) {
+  return new CompileEvent(script, type);
+}
+
+
+function CompileEvent(script, type) {
+  this.script_ = MakeMirror(script);
+  this.type_ = type;
+}
+
+
+CompileEvent.prototype.eventType = function() {
+  return this.type_;
+};
+
+
+CompileEvent.prototype.script = function() {
+  return this.script_;
+};
+
+
+CompileEvent.prototype.toJSONProtocol = function() {
+  var o = new ProtocolMessage();
+  o.running = true;
+  switch (this.type_) {
+    case Debug.DebugEvent.BeforeCompile:
+      o.event = "beforeCompile";
+      break;
+    case Debug.DebugEvent.AfterCompile:
+      o.event = "afterCompile";
+      break;
+    case Debug.DebugEvent.CompileError:
+      o.event = "compileError";
+      break;
+  }
+  o.body = {};
+  o.body.script = this.script_;
+
+  return o.toJSONProtocol();
+};
+
+
+function MakeScriptObject_(script, include_source) {
+  var o = { id: script.id(),
+            name: script.name(),
+            lineOffset: script.lineOffset(),
+            columnOffset: script.columnOffset(),
+            lineCount: script.lineCount(),
+          };
+  if (!IS_UNDEFINED(script.data())) {
+    o.data = script.data();
+  }
+  if (include_source) {
+    o.source = script.source();
+  }
+  return o;
+}
+
+
+function MakePromiseEvent(event_data) {
+  return new PromiseEvent(event_data);
+}
+
+
+function PromiseEvent(event_data) {
+  this.promise_ = event_data.promise;
+  this.parentPromise_ = event_data.parentPromise;
+  this.status_ = event_data.status;
+  this.value_ = event_data.value;
+}
+
+
+PromiseEvent.prototype.promise = function() {
+  return MakeMirror(this.promise_);
+}
+
+
+PromiseEvent.prototype.parentPromise = function() {
+  return MakeMirror(this.parentPromise_);
+}
+
+
+PromiseEvent.prototype.status = function() {
+  return this.status_;
+}
+
+
+PromiseEvent.prototype.value = function() {
+  return MakeMirror(this.value_);
+}
+
+
+function MakeAsyncTaskEvent(event_data) {
+  return new AsyncTaskEvent(event_data);
+}
+
+
+function AsyncTaskEvent(event_data) {
+  this.type_ = event_data.type;
+  this.name_ = event_data.name;
+  this.id_ = event_data.id;
+}
+
+
+AsyncTaskEvent.prototype.type = function() {
+  return this.type_;
+}
+
+
+AsyncTaskEvent.prototype.name = function() {
+  return this.name_;
+}
+
+
+AsyncTaskEvent.prototype.id = function() {
+  return this.id_;
+}
+
+
+function DebugCommandProcessor(exec_state, opt_is_running) {
+  this.exec_state_ = exec_state;
+  this.running_ = opt_is_running || false;
+}
+
+
+DebugCommandProcessor.prototype.processDebugRequest = function (request) {
+  return this.processDebugJSONRequest(request);
+};
+
+
+function ProtocolMessage(request) {
+  // Update sequence number.
+  this.seq = next_response_seq++;
+
+  if (request) {
+    // If message is based on a request this is a response. Fill the initial
+    // response from the request.
+    this.type = 'response';
+    this.request_seq = request.seq;
+    this.command = request.command;
+  } else {
+    // If message is not based on a request it is a dabugger generated event.
+    this.type = 'event';
+  }
+  this.success = true;
+  // Handler may set this field to control debugger state.
+  this.running = undefined;
+}
+
+
+ProtocolMessage.prototype.setOption = function(name, value) {
+  if (!this.options_) {
+    this.options_ = {};
+  }
+  this.options_[name] = value;
+};
+
+
+ProtocolMessage.prototype.failed = function(message, opt_details) {
+  this.success = false;
+  this.message = message;
+  if (IS_OBJECT(opt_details)) {
+    this.error_details = opt_details;
+  }
+};
+
+
+ProtocolMessage.prototype.toJSONProtocol = function() {
+  // Encode the protocol header.
+  var json = {};
+  json.seq= this.seq;
+  if (this.request_seq) {
+    json.request_seq = this.request_seq;
+  }
+  json.type = this.type;
+  if (this.event) {
+    json.event = this.event;
+  }
+  if (this.command) {
+    json.command = this.command;
+  }
+  if (this.success) {
+    json.success = this.success;
+  } else {
+    json.success = false;
+  }
+  if (this.body) {
+    // Encode the body part.
+    var bodyJson;
+    var serializer = MakeMirrorSerializer(true, this.options_);
+    if (this.body instanceof Mirror) {
+      bodyJson = serializer.serializeValue(this.body);
+    } else if (this.body instanceof Array) {
+      bodyJson = [];
+      for (var i = 0; i < this.body.length; i++) {
+        if (this.body[i] instanceof Mirror) {
+          bodyJson.push(serializer.serializeValue(this.body[i]));
+        } else {
+          bodyJson.push(ObjectToProtocolObject_(this.body[i], serializer));
+        }
+      }
+    } else {
+      bodyJson = ObjectToProtocolObject_(this.body, serializer);
+    }
+    json.body = bodyJson;
+    json.refs = serializer.serializeReferencedObjects();
+  }
+  if (this.message) {
+    json.message = this.message;
+  }
+  if (this.error_details) {
+    json.error_details = this.error_details;
+  }
+  json.running = this.running;
+  return JSON.stringify(json);
+};
+
+
+DebugCommandProcessor.prototype.createResponse = function(request) {
+  return new ProtocolMessage(request);
+};
+
+
+DebugCommandProcessor.prototype.processDebugJSONRequest = function(
+    json_request) {
+  var request;  // Current request.
+  var response;  // Generated response.
+  try {
+    try {
+      // Convert the JSON string to an object.
+      request = JSON.parse(json_request);
+
+      // Create an initial response.
+      response = this.createResponse(request);
+
+      if (!request.type) {
+        throw new Error('Type not specified');
+      }
+
+      if (request.type != 'request') {
+        throw new Error("Illegal type '" + request.type + "' in request");
+      }
+
+      if (!request.command) {
+        throw new Error('Command not specified');
+      }
+
+      if (request.arguments) {
+        var args = request.arguments;
+        // TODO(yurys): remove request.arguments.compactFormat check once
+        // ChromeDevTools are switched to 'inlineRefs'
+        if (args.inlineRefs || args.compactFormat) {
+          response.setOption('inlineRefs', true);
+        }
+        if (!IS_UNDEFINED(args.maxStringLength)) {
+          response.setOption('maxStringLength', args.maxStringLength);
+        }
+      }
+
+      var key = request.command.toLowerCase();
+      var handler = DebugCommandProcessor.prototype.dispatch_[key];
+      if (IS_FUNCTION(handler)) {
+        %_CallFunction(this, request, response, handler);
+      } else {
+        throw new Error('Unknown command "' + request.command + '" in request');
+      }
+    } catch (e) {
+      // If there is no response object created one (without command).
+      if (!response) {
+        response = this.createResponse();
+      }
+      response.success = false;
+      response.message = %ToString(e);
+    }
+
+    // Return the response as a JSON encoded string.
+    try {
+      if (!IS_UNDEFINED(response.running)) {
+        // Response controls running state.
+        this.running_ = response.running;
+      }
+      response.running = this.running_;
+      return response.toJSONProtocol();
+    } catch (e) {
+      // Failed to generate response - return generic error.
+      return '{"seq":' + response.seq + ',' +
+              '"request_seq":' + request.seq + ',' +
+              '"type":"response",' +
+              '"success":false,' +
+              '"message":"Internal error: ' + %ToString(e) + '"}';
+    }
+  } catch (e) {
+    // Failed in one of the catch blocks above - most generic error.
+    return '{"seq":0,"type":"response","success":false,"message":"Internal error"}';
+  }
+};
+
+
+DebugCommandProcessor.prototype.continueRequest_ = function(request, response) {
+  // Check for arguments for continue.
+  if (request.arguments) {
+    var count = 1;
+    var action = Debug.StepAction.StepIn;
+
+    // Pull out arguments.
+    var stepaction = request.arguments.stepaction;
+    var stepcount = request.arguments.stepcount;
+
+    // Get the stepcount argument if any.
+    if (stepcount) {
+      count = %ToNumber(stepcount);
+      if (count < 0) {
+        throw new Error('Invalid stepcount argument "' + stepcount + '".');
+      }
+    }
+
+    // Get the stepaction argument.
+    if (stepaction) {
+      if (stepaction == 'in') {
+        action = Debug.StepAction.StepIn;
+      } else if (stepaction == 'min') {
+        action = Debug.StepAction.StepMin;
+      } else if (stepaction == 'next') {
+        action = Debug.StepAction.StepNext;
+      } else if (stepaction == 'out') {
+        action = Debug.StepAction.StepOut;
+      } else {
+        throw new Error('Invalid stepaction argument "' + stepaction + '".');
+      }
+    }
+
+    // Set up the VM for stepping.
+    this.exec_state_.prepareStep(action, count);
+  }
+
+  // VM should be running after executing this request.
+  response.running = true;
+};
+
+
+DebugCommandProcessor.prototype.breakRequest_ = function(request, response) {
+  // Ignore as break command does not do anything when broken.
+};
+
+
+DebugCommandProcessor.prototype.setBreakPointRequest_ =
+    function(request, response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out arguments.
+  var type = request.arguments.type;
+  var target = request.arguments.target;
+  var line = request.arguments.line;
+  var column = request.arguments.column;
+  var enabled = IS_UNDEFINED(request.arguments.enabled) ?
+      true : request.arguments.enabled;
+  var condition = request.arguments.condition;
+  var ignoreCount = request.arguments.ignoreCount;
+  var groupId = request.arguments.groupId;
+
+  // Check for legal arguments.
+  if (!type || IS_UNDEFINED(target)) {
+    response.failed('Missing argument "type" or "target"');
+    return;
+  }
+
+  // Either function or script break point.
+  var break_point_number;
+  if (type == 'function') {
+    // Handle function break point.
+    if (!IS_STRING(target)) {
+      response.failed('Argument "target" is not a string value');
+      return;
+    }
+    var f;
+    try {
+      // Find the function through a global evaluate.
+      f = this.exec_state_.evaluateGlobal(target).value();
+    } catch (e) {
+      response.failed('Error: "' + %ToString(e) +
+                      '" evaluating "' + target + '"');
+      return;
+    }
+    if (!IS_FUNCTION(f)) {
+      response.failed('"' + target + '" does not evaluate to a function');
+      return;
+    }
+
+    // Set function break point.
+    break_point_number = Debug.setBreakPoint(f, line, column, condition);
+  } else if (type == 'handle') {
+    // Find the object pointed by the specified handle.
+    var handle = parseInt(target, 10);
+    var mirror = LookupMirror(handle);
+    if (!mirror) {
+      return response.failed('Object #' + handle + '# not found');
+    }
+    if (!mirror.isFunction()) {
+      return response.failed('Object #' + handle + '# is not a function');
+    }
+
+    // Set function break point.
+    break_point_number = Debug.setBreakPoint(mirror.value(),
+                                             line, column, condition);
+  } else if (type == 'script') {
+    // set script break point.
+    break_point_number =
+        Debug.setScriptBreakPointByName(target, line, column, condition,
+                                        groupId);
+  } else if (type == 'scriptId') {
+    break_point_number =
+        Debug.setScriptBreakPointById(target, line, column, condition, groupId);
+  } else if (type == 'scriptRegExp') {
+    break_point_number =
+        Debug.setScriptBreakPointByRegExp(target, line, column, condition,
+                                          groupId);
+  } else {
+    response.failed('Illegal type "' + type + '"');
+    return;
+  }
+
+  // Set additional break point properties.
+  var break_point = Debug.findBreakPoint(break_point_number);
+  if (ignoreCount) {
+    Debug.changeBreakPointIgnoreCount(break_point_number, ignoreCount);
+  }
+  if (!enabled) {
+    Debug.disableBreakPoint(break_point_number);
+  }
+
+  // Add the break point number to the response.
+  response.body = { type: type,
+                    breakpoint: break_point_number };
+
+  // Add break point information to the response.
+  if (break_point instanceof ScriptBreakPoint) {
+    if (break_point.type() == Debug.ScriptBreakPointType.ScriptId) {
+      response.body.type = 'scriptId';
+      response.body.script_id = break_point.script_id();
+    } else if (break_point.type() == Debug.ScriptBreakPointType.ScriptName) {
+      response.body.type = 'scriptName';
+      response.body.script_name = break_point.script_name();
+    } else if (break_point.type() == Debug.ScriptBreakPointType.ScriptRegExp) {
+      response.body.type = 'scriptRegExp';
+      response.body.script_regexp = break_point.script_regexp_object().source;
+    } else {
+      throw new Error("Internal error: Unexpected breakpoint type: " +
+                      break_point.type());
+    }
+    response.body.line = break_point.line();
+    response.body.column = break_point.column();
+    response.body.actual_locations = break_point.actual_locations();
+  } else {
+    response.body.type = 'function';
+    response.body.actual_locations = [break_point.actual_location];
+  }
+};
+
+
+DebugCommandProcessor.prototype.changeBreakPointRequest_ = function(
+    request, response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out arguments.
+  var break_point = %ToNumber(request.arguments.breakpoint);
+  var enabled = request.arguments.enabled;
+  var condition = request.arguments.condition;
+  var ignoreCount = request.arguments.ignoreCount;
+
+  // Check for legal arguments.
+  if (!break_point) {
+    response.failed('Missing argument "breakpoint"');
+    return;
+  }
+
+  // Change enabled state if supplied.
+  if (!IS_UNDEFINED(enabled)) {
+    if (enabled) {
+      Debug.enableBreakPoint(break_point);
+    } else {
+      Debug.disableBreakPoint(break_point);
+    }
+  }
+
+  // Change condition if supplied
+  if (!IS_UNDEFINED(condition)) {
+    Debug.changeBreakPointCondition(break_point, condition);
+  }
+
+  // Change ignore count if supplied
+  if (!IS_UNDEFINED(ignoreCount)) {
+    Debug.changeBreakPointIgnoreCount(break_point, ignoreCount);
+  }
+};
+
+
+DebugCommandProcessor.prototype.clearBreakPointGroupRequest_ = function(
+    request, response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out arguments.
+  var group_id = request.arguments.groupId;
+
+  // Check for legal arguments.
+  if (!group_id) {
+    response.failed('Missing argument "groupId"');
+    return;
+  }
+
+  var cleared_break_points = [];
+  var new_script_break_points = [];
+  for (var i = 0; i < script_break_points.length; i++) {
+    var next_break_point = script_break_points[i];
+    if (next_break_point.groupId() == group_id) {
+      cleared_break_points.push(next_break_point.number());
+      next_break_point.clear();
+    } else {
+      new_script_break_points.push(next_break_point);
+    }
+  }
+  script_break_points = new_script_break_points;
+
+  // Add the cleared break point numbers to the response.
+  response.body = { breakpoints: cleared_break_points };
+};
+
+
+DebugCommandProcessor.prototype.clearBreakPointRequest_ = function(
+    request, response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out arguments.
+  var break_point = %ToNumber(request.arguments.breakpoint);
+
+  // Check for legal arguments.
+  if (!break_point) {
+    response.failed('Missing argument "breakpoint"');
+    return;
+  }
+
+  // Clear break point.
+  Debug.clearBreakPoint(break_point);
+
+  // Add the cleared break point number to the response.
+  response.body = { breakpoint: break_point };
+};
+
+
+DebugCommandProcessor.prototype.listBreakpointsRequest_ = function(
+    request, response) {
+  var array = [];
+  for (var i = 0; i < script_break_points.length; i++) {
+    var break_point = script_break_points[i];
+
+    var description = {
+      number: break_point.number(),
+      line: break_point.line(),
+      column: break_point.column(),
+      groupId: break_point.groupId(),
+      hit_count: break_point.hit_count(),
+      active: break_point.active(),
+      condition: break_point.condition(),
+      ignoreCount: break_point.ignoreCount(),
+      actual_locations: break_point.actual_locations()
+    };
+
+    if (break_point.type() == Debug.ScriptBreakPointType.ScriptId) {
+      description.type = 'scriptId';
+      description.script_id = break_point.script_id();
+    } else if (break_point.type() == Debug.ScriptBreakPointType.ScriptName) {
+      description.type = 'scriptName';
+      description.script_name = break_point.script_name();
+    } else if (break_point.type() == Debug.ScriptBreakPointType.ScriptRegExp) {
+      description.type = 'scriptRegExp';
+      description.script_regexp = break_point.script_regexp_object().source;
+    } else {
+      throw new Error("Internal error: Unexpected breakpoint type: " +
+                      break_point.type());
+    }
+    array.push(description);
+  }
+
+  response.body = {
+    breakpoints: array,
+    breakOnExceptions: Debug.isBreakOnException(),
+    breakOnUncaughtExceptions: Debug.isBreakOnUncaughtException()
+  };
+};
+
+
+DebugCommandProcessor.prototype.disconnectRequest_ =
+    function(request, response) {
+  Debug.disableAllBreakPoints();
+  this.continueRequest_(request, response);
+};
+
+
+DebugCommandProcessor.prototype.setExceptionBreakRequest_ =
+    function(request, response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out and check the 'type' argument:
+  var type = request.arguments.type;
+  if (!type) {
+    response.failed('Missing argument "type"');
+    return;
+  }
+
+  // Initialize the default value of enable:
+  var enabled;
+  if (type == 'all') {
+    enabled = !Debug.isBreakOnException();
+  } else if (type == 'uncaught') {
+    enabled = !Debug.isBreakOnUncaughtException();
+  }
+
+  // Pull out and check the 'enabled' argument if present:
+  if (!IS_UNDEFINED(request.arguments.enabled)) {
+    enabled = request.arguments.enabled;
+    if ((enabled != true) && (enabled != false)) {
+      response.failed('Illegal value for "enabled":"' + enabled + '"');
+    }
+  }
+
+  // Now set the exception break state:
+  if (type == 'all') {
+    %ChangeBreakOnException(Debug.ExceptionBreak.Caught, enabled);
+  } else if (type == 'uncaught') {
+    %ChangeBreakOnException(Debug.ExceptionBreak.Uncaught, enabled);
+  } else {
+    response.failed('Unknown "type":"' + type + '"');
+  }
+
+  // Add the cleared break point number to the response.
+  response.body = { 'type': type, 'enabled': enabled };
+};
+
+
+DebugCommandProcessor.prototype.backtraceRequest_ = function(
+    request, response) {
+  // Get the number of frames.
+  var total_frames = this.exec_state_.frameCount();
+
+  // Create simple response if there are no frames.
+  if (total_frames == 0) {
+    response.body = {
+      totalFrames: total_frames
+    };
+    return;
+  }
+
+  // Default frame range to include in backtrace.
+  var from_index = 0;
+  var to_index = kDefaultBacktraceLength;
+
+  // Get the range from the arguments.
+  if (request.arguments) {
+    if (request.arguments.fromFrame) {
+      from_index = request.arguments.fromFrame;
+    }
+    if (request.arguments.toFrame) {
+      to_index = request.arguments.toFrame;
+    }
+    if (request.arguments.bottom) {
+      var tmp_index = total_frames - from_index;
+      from_index = total_frames - to_index;
+      to_index = tmp_index;
+    }
+    if (from_index < 0 || to_index < 0) {
+      return response.failed('Invalid frame number');
+    }
+  }
+
+  // Adjust the index.
+  to_index = Math.min(total_frames, to_index);
+
+  if (to_index <= from_index) {
+    var error = 'Invalid frame range';
+    return response.failed(error);
+  }
+
+  // Create the response body.
+  var frames = [];
+  for (var i = from_index; i < to_index; i++) {
+    frames.push(this.exec_state_.frame(i));
+  }
+  response.body = {
+    fromFrame: from_index,
+    toFrame: to_index,
+    totalFrames: total_frames,
+    frames: frames
+  };
+};
+
+
+DebugCommandProcessor.prototype.frameRequest_ = function(request, response) {
+  // No frames no source.
+  if (this.exec_state_.frameCount() == 0) {
+    return response.failed('No frames');
+  }
+
+  // With no arguments just keep the selected frame.
+  if (request.arguments) {
+    var index = request.arguments.number;
+    if (index < 0 || this.exec_state_.frameCount() <= index) {
+      return response.failed('Invalid frame number');
+    }
+
+    this.exec_state_.setSelectedFrame(request.arguments.number);
+  }
+  response.body = this.exec_state_.frame();
+};
+
+
+DebugCommandProcessor.prototype.resolveFrameFromScopeDescription_ =
+    function(scope_description) {
+  // Get the frame for which the scope or scopes are requested.
+  // With no frameNumber argument use the currently selected frame.
+  if (scope_description && !IS_UNDEFINED(scope_description.frameNumber)) {
+    frame_index = scope_description.frameNumber;
+    if (frame_index < 0 || this.exec_state_.frameCount() <= frame_index) {
+      throw new Error('Invalid frame number');
+    }
+    return this.exec_state_.frame(frame_index);
+  } else {
+    return this.exec_state_.frame();
+  }
+};
+
+
+// Gets scope host object from request. It is either a function
+// ('functionHandle' argument must be specified) or a stack frame
+// ('frameNumber' may be specified and the current frame is taken by default).
+DebugCommandProcessor.prototype.resolveScopeHolder_ =
+    function(scope_description) {
+  if (scope_description && "functionHandle" in scope_description) {
+    if (!IS_NUMBER(scope_description.functionHandle)) {
+      throw new Error('Function handle must be a number');
+    }
+    var function_mirror = LookupMirror(scope_description.functionHandle);
+    if (!function_mirror) {
+      throw new Error('Failed to find function object by handle');
+    }
+    if (!function_mirror.isFunction()) {
+      throw new Error('Value of non-function type is found by handle');
+    }
+    return function_mirror;
+  } else {
+    // No frames no scopes.
+    if (this.exec_state_.frameCount() == 0) {
+      throw new Error('No scopes');
+    }
+
+    // Get the frame for which the scopes are requested.
+    var frame = this.resolveFrameFromScopeDescription_(scope_description);
+    return frame;
+  }
+}
+
+
+DebugCommandProcessor.prototype.scopesRequest_ = function(request, response) {
+  var scope_holder = this.resolveScopeHolder_(request.arguments);
+
+  // Fill all scopes for this frame or function.
+  var total_scopes = scope_holder.scopeCount();
+  var scopes = [];
+  for (var i = 0; i < total_scopes; i++) {
+    scopes.push(scope_holder.scope(i));
+  }
+  response.body = {
+    fromScope: 0,
+    toScope: total_scopes,
+    totalScopes: total_scopes,
+    scopes: scopes
+  };
+};
+
+
+DebugCommandProcessor.prototype.scopeRequest_ = function(request, response) {
+  // Get the frame or function for which the scope is requested.
+  var scope_holder = this.resolveScopeHolder_(request.arguments);
+
+  // With no scope argument just return top scope.
+  var scope_index = 0;
+  if (request.arguments && !IS_UNDEFINED(request.arguments.number)) {
+    scope_index = %ToNumber(request.arguments.number);
+    if (scope_index < 0 || scope_holder.scopeCount() <= scope_index) {
+      return response.failed('Invalid scope number');
+    }
+  }
+
+  response.body = scope_holder.scope(scope_index);
+};
+
+
+// Reads value from protocol description. Description may be in form of type
+// (for singletons), raw value (primitive types supported in JSON),
+// string value description plus type (for primitive values) or handle id.
+// Returns raw value or throws exception.
+DebugCommandProcessor.resolveValue_ = function(value_description) {
+  if ("handle" in value_description) {
+    var value_mirror = LookupMirror(value_description.handle);
+    if (!value_mirror) {
+      throw new Error("Failed to resolve value by handle, ' #" +
+          mapping.handle + "# not found");
+    }
+    return value_mirror.value();
+  } else if ("stringDescription" in value_description) {
+    if (value_description.type == BOOLEAN_TYPE) {
+      return Boolean(value_description.stringDescription);
+    } else if (value_description.type == NUMBER_TYPE) {
+      return Number(value_description.stringDescription);
+    } if (value_description.type == STRING_TYPE) {
+      return String(value_description.stringDescription);
+    } else {
+      throw new Error("Unknown type");
+    }
+  } else if ("value" in value_description) {
+    return value_description.value;
+  } else if (value_description.type == UNDEFINED_TYPE) {
+    return UNDEFINED;
+  } else if (value_description.type == NULL_TYPE) {
+    return null;
+  } else {
+    throw new Error("Failed to parse value description");
+  }
+};
+
+
+DebugCommandProcessor.prototype.setVariableValueRequest_ =
+    function(request, response) {
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  if (IS_UNDEFINED(request.arguments.name)) {
+    response.failed('Missing variable name');
+  }
+  var variable_name = request.arguments.name;
+
+  var scope_description = request.arguments.scope;
+
+  // Get the frame or function for which the scope is requested.
+  var scope_holder = this.resolveScopeHolder_(scope_description);
+
+  if (IS_UNDEFINED(scope_description.number)) {
+    response.failed('Missing scope number');
+  }
+  var scope_index = %ToNumber(scope_description.number);
+
+  var scope = scope_holder.scope(scope_index);
+
+  var new_value =
+      DebugCommandProcessor.resolveValue_(request.arguments.newValue);
+
+  scope.setVariableValue(variable_name, new_value);
+
+  var new_value_mirror = MakeMirror(new_value);
+
+  response.body = {
+    newValue: new_value_mirror
+  };
+};
+
+
+DebugCommandProcessor.prototype.evaluateRequest_ = function(request, response) {
+  if (!request.arguments) {
+    return response.failed('Missing arguments');
+  }
+
+  // Pull out arguments.
+  var expression = request.arguments.expression;
+  var frame = request.arguments.frame;
+  var global = request.arguments.global;
+  var disable_break = request.arguments.disable_break;
+  var additional_context = request.arguments.additional_context;
+
+  // The expression argument could be an integer so we convert it to a
+  // string.
+  try {
+    expression = String(expression);
+  } catch(e) {
+    return response.failed('Failed to convert expression argument to string');
+  }
+
+  // Check for legal arguments.
+  if (!IS_UNDEFINED(frame) && global) {
+    return response.failed('Arguments "frame" and "global" are exclusive');
+  }
+
+  var additional_context_object;
+  if (additional_context) {
+    additional_context_object = {};
+    for (var i = 0; i < additional_context.length; i++) {
+      var mapping = additional_context[i];
+
+      if (!IS_STRING(mapping.name)) {
+        return response.failed("Context element #" + i +
+            " doesn't contain name:string property");
+      }
+
+      var raw_value = DebugCommandProcessor.resolveValue_(mapping);
+      additional_context_object[mapping.name] = raw_value;
+    }
+  }
+
+  // Global evaluate.
+  if (global) {
+    // Evaluate in the native context.
+    response.body = this.exec_state_.evaluateGlobal(
+        expression, Boolean(disable_break), additional_context_object);
+    return;
+  }
+
+  // Default value for disable_break is true.
+  if (IS_UNDEFINED(disable_break)) {
+    disable_break = true;
+  }
+
+  // No frames no evaluate in frame.
+  if (this.exec_state_.frameCount() == 0) {
+    return response.failed('No frames');
+  }
+
+  // Check whether a frame was specified.
+  if (!IS_UNDEFINED(frame)) {
+    var frame_number = %ToNumber(frame);
+    if (frame_number < 0 || frame_number >= this.exec_state_.frameCount()) {
+      return response.failed('Invalid frame "' + frame + '"');
+    }
+    // Evaluate in the specified frame.
+    response.body = this.exec_state_.frame(frame_number).evaluate(
+        expression, Boolean(disable_break), additional_context_object);
+    return;
+  } else {
+    // Evaluate in the selected frame.
+    response.body = this.exec_state_.frame().evaluate(
+        expression, Boolean(disable_break), additional_context_object);
+    return;
+  }
+};
+
+
+DebugCommandProcessor.prototype.lookupRequest_ = function(request, response) {
+  if (!request.arguments) {
+    return response.failed('Missing arguments');
+  }
+
+  // Pull out arguments.
+  var handles = request.arguments.handles;
+
+  // Check for legal arguments.
+  if (IS_UNDEFINED(handles)) {
+    return response.failed('Argument "handles" missing');
+  }
+
+  // Set 'includeSource' option for script lookup.
+  if (!IS_UNDEFINED(request.arguments.includeSource)) {
+    includeSource = %ToBoolean(request.arguments.includeSource);
+    response.setOption('includeSource', includeSource);
+  }
+
+  // Lookup handles.
+  var mirrors = {};
+  for (var i = 0; i < handles.length; i++) {
+    var handle = handles[i];
+    var mirror = LookupMirror(handle);
+    if (!mirror) {
+      return response.failed('Object #' + handle + '# not found');
+    }
+    mirrors[handle] = mirror;
+  }
+  response.body = mirrors;
+};
+
+
+DebugCommandProcessor.prototype.referencesRequest_ =
+    function(request, response) {
+  if (!request.arguments) {
+    return response.failed('Missing arguments');
+  }
+
+  // Pull out arguments.
+  var type = request.arguments.type;
+  var handle = request.arguments.handle;
+
+  // Check for legal arguments.
+  if (IS_UNDEFINED(type)) {
+    return response.failed('Argument "type" missing');
+  }
+  if (IS_UNDEFINED(handle)) {
+    return response.failed('Argument "handle" missing');
+  }
+  if (type != 'referencedBy' && type != 'constructedBy') {
+    return response.failed('Invalid type "' + type + '"');
+  }
+
+  // Lookup handle and return objects with references the object.
+  var mirror = LookupMirror(handle);
+  if (mirror) {
+    if (type == 'referencedBy') {
+      response.body = mirror.referencedBy();
+    } else {
+      response.body = mirror.constructedBy();
+    }
+  } else {
+    return response.failed('Object #' + handle + '# not found');
+  }
+};
+
+
+DebugCommandProcessor.prototype.sourceRequest_ = function(request, response) {
+  // No frames no source.
+  if (this.exec_state_.frameCount() == 0) {
+    return response.failed('No source');
+  }
+
+  var from_line;
+  var to_line;
+  var frame = this.exec_state_.frame();
+  if (request.arguments) {
+    // Pull out arguments.
+    from_line = request.arguments.fromLine;
+    to_line = request.arguments.toLine;
+
+    if (!IS_UNDEFINED(request.arguments.frame)) {
+      var frame_number = %ToNumber(request.arguments.frame);
+      if (frame_number < 0 || frame_number >= this.exec_state_.frameCount()) {
+        return response.failed('Invalid frame "' + frame + '"');
+      }
+      frame = this.exec_state_.frame(frame_number);
+    }
+  }
+
+  // Get the script selected.
+  var script = frame.func().script();
+  if (!script) {
+    return response.failed('No source');
+  }
+
+  // Get the source slice and fill it into the response.
+  var slice = script.sourceSlice(from_line, to_line);
+  if (!slice) {
+    return response.failed('Invalid line interval');
+  }
+  response.body = {};
+  response.body.source = slice.sourceText();
+  response.body.fromLine = slice.from_line;
+  response.body.toLine = slice.to_line;
+  response.body.fromPosition = slice.from_position;
+  response.body.toPosition = slice.to_position;
+  response.body.totalLines = script.lineCount();
+};
+
+
+DebugCommandProcessor.prototype.scriptsRequest_ = function(request, response) {
+  var types = ScriptTypeFlag(Debug.ScriptType.Normal);
+  var includeSource = false;
+  var idsToInclude = null;
+  if (request.arguments) {
+    // Pull out arguments.
+    if (!IS_UNDEFINED(request.arguments.types)) {
+      types = %ToNumber(request.arguments.types);
+      if (isNaN(types) || types < 0) {
+        return response.failed('Invalid types "' +
+                               request.arguments.types + '"');
+      }
+    }
+
+    if (!IS_UNDEFINED(request.arguments.includeSource)) {
+      includeSource = %ToBoolean(request.arguments.includeSource);
+      response.setOption('includeSource', includeSource);
+    }
+
+    if (IS_ARRAY(request.arguments.ids)) {
+      idsToInclude = {};
+      var ids = request.arguments.ids;
+      for (var i = 0; i < ids.length; i++) {
+        idsToInclude[ids[i]] = true;
+      }
+    }
+
+    var filterStr = null;
+    var filterNum = null;
+    if (!IS_UNDEFINED(request.arguments.filter)) {
+      var num = %ToNumber(request.arguments.filter);
+      if (!isNaN(num)) {
+        filterNum = num;
+      }
+      filterStr = request.arguments.filter;
+    }
+  }
+
+  // Collect all scripts in the heap.
+  var scripts = %DebugGetLoadedScripts();
+
+  response.body = [];
+
+  for (var i = 0; i < scripts.length; i++) {
+    if (idsToInclude && !idsToInclude[scripts[i].id]) {
+      continue;
+    }
+    if (filterStr || filterNum) {
+      var script = scripts[i];
+      var found = false;
+      if (filterNum && !found) {
+        if (script.id && script.id === filterNum) {
+          found = true;
+        }
+      }
+      if (filterStr && !found) {
+        if (script.name && script.name.indexOf(filterStr) >= 0) {
+          found = true;
+        }
+      }
+      if (!found) continue;
+    }
+    if (types & ScriptTypeFlag(scripts[i].type)) {
+      response.body.push(MakeMirror(scripts[i]));
+    }
+  }
+};
+
+
+DebugCommandProcessor.prototype.threadsRequest_ = function(request, response) {
+  // Get the number of threads.
+  var total_threads = this.exec_state_.threadCount();
+
+  // Get information for all threads.
+  var threads = [];
+  for (var i = 0; i < total_threads; i++) {
+    var details = %GetThreadDetails(this.exec_state_.break_id, i);
+    var thread_info = { current: details[0],
+                        id: details[1]
+                      };
+    threads.push(thread_info);
+  }
+
+  // Create the response body.
+  response.body = {
+    totalThreads: total_threads,
+    threads: threads
+  };
+};
+
+
+DebugCommandProcessor.prototype.suspendRequest_ = function(request, response) {
+  response.running = false;
+};
+
+
+DebugCommandProcessor.prototype.versionRequest_ = function(request, response) {
+  response.body = {
+    V8Version: %GetV8Version()
+  };
+};
+
+
+DebugCommandProcessor.prototype.changeLiveRequest_ = function(
+    request, response) {
+  if (!request.arguments) {
+    return response.failed('Missing arguments');
+  }
+  var script_id = request.arguments.script_id;
+  var preview_only = !!request.arguments.preview_only;
+
+  var scripts = %DebugGetLoadedScripts();
+
+  var the_script = null;
+  for (var i = 0; i < scripts.length; i++) {
+    if (scripts[i].id == script_id) {
+      the_script = scripts[i];
+    }
+  }
+  if (!the_script) {
+    response.failed('Script not found');
+    return;
+  }
+
+  var change_log = new Array();
+
+  if (!IS_STRING(request.arguments.new_source)) {
+    throw "new_source argument expected";
+  }
+
+  var new_source = request.arguments.new_source;
+
+  var result_description;
+  try {
+    result_description = Debug.LiveEdit.SetScriptSource(the_script,
+        new_source, preview_only, change_log);
+  } catch (e) {
+    if (e instanceof Debug.LiveEdit.Failure && "details" in e) {
+      response.failed(e.message, e.details);
+      return;
+    }
+    throw e;
+  }
+  response.body = {change_log: change_log, result: result_description};
+
+  if (!preview_only && !this.running_ && result_description.stack_modified) {
+    response.body.stepin_recommended = true;
+  }
+};
+
+
+DebugCommandProcessor.prototype.restartFrameRequest_ = function(
+    request, response) {
+  if (!request.arguments) {
+    return response.failed('Missing arguments');
+  }
+  var frame = request.arguments.frame;
+
+  // No frames to evaluate in frame.
+  if (this.exec_state_.frameCount() == 0) {
+    return response.failed('No frames');
+  }
+
+  var frame_mirror;
+  // Check whether a frame was specified.
+  if (!IS_UNDEFINED(frame)) {
+    var frame_number = %ToNumber(frame);
+    if (frame_number < 0 || frame_number >= this.exec_state_.frameCount()) {
+      return response.failed('Invalid frame "' + frame + '"');
+    }
+    // Restart specified frame.
+    frame_mirror = this.exec_state_.frame(frame_number);
+  } else {
+    // Restart selected frame.
+    frame_mirror = this.exec_state_.frame();
+  }
+
+  var result_description = Debug.LiveEdit.RestartFrame(frame_mirror);
+  response.body = {result: result_description};
+};
+
+
+DebugCommandProcessor.prototype.debuggerFlagsRequest_ = function(request,
+                                                                 response) {
+  // Check for legal request.
+  if (!request.arguments) {
+    response.failed('Missing arguments');
+    return;
+  }
+
+  // Pull out arguments.
+  var flags = request.arguments.flags;
+
+  response.body = { flags: [] };
+  if (!IS_UNDEFINED(flags)) {
+    for (var i = 0; i < flags.length; i++) {
+      var name = flags[i].name;
+      var debugger_flag = debugger_flags[name];
+      if (!debugger_flag) {
+        continue;
+      }
+      if ('value' in flags[i]) {
+        debugger_flag.setValue(flags[i].value);
+      }
+      response.body.flags.push({ name: name, value: debugger_flag.getValue() });
+    }
+  } else {
+    for (var name in debugger_flags) {
+      var value = debugger_flags[name].getValue();
+      response.body.flags.push({ name: name, value: value });
+    }
+  }
+};
+
+
+DebugCommandProcessor.prototype.v8FlagsRequest_ = function(request, response) {
+  var flags = request.arguments.flags;
+  if (!flags) flags = '';
+  %SetFlags(flags);
+};
+
+
+DebugCommandProcessor.prototype.gcRequest_ = function(request, response) {
+  var type = request.arguments.type;
+  if (!type) type = 'all';
+
+  var before = %GetHeapUsage();
+  %CollectGarbage(type);
+  var after = %GetHeapUsage();
+
+  response.body = { "before": before, "after": after };
+};
+
+
+DebugCommandProcessor.prototype.dispatch_ = (function() {
+  var proto = DebugCommandProcessor.prototype;
+  return {
+    "continue":             proto.continueRequest_,
+    "break"   :             proto.breakRequest_,
+    "setbreakpoint" :       proto.setBreakPointRequest_,
+    "changebreakpoint":     proto.changeBreakPointRequest_,
+    "clearbreakpoint":      proto.clearBreakPointRequest_,
+    "clearbreakpointgroup": proto.clearBreakPointGroupRequest_,
+    "disconnect":           proto.disconnectRequest_,
+    "setexceptionbreak":    proto.setExceptionBreakRequest_,
+    "listbreakpoints":      proto.listBreakpointsRequest_,
+    "backtrace":            proto.backtraceRequest_,
+    "frame":                proto.frameRequest_,
+    "scopes":               proto.scopesRequest_,
+    "scope":                proto.scopeRequest_,
+    "setvariablevalue":     proto.setVariableValueRequest_,
+    "evaluate":             proto.evaluateRequest_,
+    "lookup":               proto.lookupRequest_,
+    "references":           proto.referencesRequest_,
+    "source":               proto.sourceRequest_,
+    "scripts":              proto.scriptsRequest_,
+    "threads":              proto.threadsRequest_,
+    "suspend":              proto.suspendRequest_,
+    "version":              proto.versionRequest_,
+    "changelive":           proto.changeLiveRequest_,
+    "restartframe":         proto.restartFrameRequest_,
+    "flags":                proto.debuggerFlagsRequest_,
+    "v8flag":               proto.v8FlagsRequest_,
+    "gc":                   proto.gcRequest_,
+  };
+})();
+
+
+// Check whether the previously processed command caused the VM to become
+// running.
+DebugCommandProcessor.prototype.isRunning = function() {
+  return this.running_;
+};
+
+
+DebugCommandProcessor.prototype.systemBreak = function(cmd, args) {
+  return %SystemBreak();
+};
+
+
+/**
+ * Convert an Object to its debugger protocol representation. The representation
+ * may be serilized to a JSON object using JSON.stringify().
+ * This implementation simply runs through all string property names, converts
+ * each property value to a protocol value and adds the property to the result
+ * object. For type "object" the function will be called recursively. Note that
+ * circular structures will cause infinite recursion.
+ * @param {Object} object The object to format as protocol object.
+ * @param {MirrorSerializer} mirror_serializer The serializer to use if any
+ *     mirror objects are encountered.
+ * @return {Object} Protocol object value.
+ */
+function ObjectToProtocolObject_(object, mirror_serializer) {
+  var content = {};
+  for (var key in object) {
+    // Only consider string keys.
+    if (typeof key == 'string') {
+      // Format the value based on its type.
+      var property_value_json = ValueToProtocolValue_(object[key],
+                                                      mirror_serializer);
+      // Add the property if relevant.
+      if (!IS_UNDEFINED(property_value_json)) {
+        content[key] = property_value_json;
+      }
+    }
+  }
+
+  return content;
+}
+
+
+/**
+ * Convert an array to its debugger protocol representation. It will convert
+ * each array element to a protocol value.
+ * @param {Array} array The array to format as protocol array.
+ * @param {MirrorSerializer} mirror_serializer The serializer to use if any
+ *     mirror objects are encountered.
+ * @return {Array} Protocol array value.
+ */
+function ArrayToProtocolArray_(array, mirror_serializer) {
+  var json = [];
+  for (var i = 0; i < array.length; i++) {
+    json.push(ValueToProtocolValue_(array[i], mirror_serializer));
+  }
+  return json;
+}
+
+
+/**
+ * Convert a value to its debugger protocol representation.
+ * @param {*} value The value to format as protocol value.
+ * @param {MirrorSerializer} mirror_serializer The serializer to use if any
+ *     mirror objects are encountered.
+ * @return {*} Protocol value.
+ */
+function ValueToProtocolValue_(value, mirror_serializer) {
+  // Format the value based on its type.
+  var json;
+  switch (typeof value) {
+    case 'object':
+      if (value instanceof Mirror) {
+        json = mirror_serializer.serializeValue(value);
+      } else if (IS_ARRAY(value)){
+        json = ArrayToProtocolArray_(value, mirror_serializer);
+      } else {
+        json = ObjectToProtocolObject_(value, mirror_serializer);
+      }
+      break;
+
+    case 'boolean':
+    case 'string':
+    case 'number':
+      json = value;
+      break;
+
+    default:
+      json = null;
+  }
+  return json;
+}
+
+Debug.TestApi = {
+  CommandProcessorResolveValue: DebugCommandProcessor.resolveValue_
+};
diff --git a/v4-cokapi/backends/javascript/v8-reference-code/src/debug.cc b/v4-cokapi/backends/javascript/v8-reference-code/src/debug.cc
new file mode 100644
index 000000000..93ef1cfc0
--- /dev/null
+++ b/v4-cokapi/backends/javascript/v8-reference-code/src/debug.cc
@@ -0,0 +1,3501 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/v8.h"
+
+#include "src/api.h"
+#include "src/arguments.h"
+#include "src/bootstrapper.h"
+#include "src/code-stubs.h"
+#include "src/codegen.h"
+#include "src/compilation-cache.h"
+#include "src/compiler.h"
+#include "src/debug.h"
+#include "src/deoptimizer.h"
+#include "src/execution.h"
+#include "src/full-codegen.h"
+#include "src/global-handles.h"
+#include "src/isolate-inl.h"
+#include "src/list.h"
+#include "src/log.h"
+#include "src/messages.h"
+#include "src/natives.h"
+
+#include "include/v8-debug.h"
+
+namespace v8 {
+namespace internal {
+
+Debug::Debug(Isolate* isolate)
+    : debug_context_(Handle<Context>()),
+      event_listener_(Handle<Object>()),
+      event_listener_data_(Handle<Object>()),
+      message_handler_(NULL),
+      command_received_(0),
+      command_queue_(isolate->logger(), kQueueInitialSize),
+      event_command_queue_(isolate->logger(), kQueueInitialSize),
+      is_active_(false),
+      is_suppressed_(false),
+      live_edit_enabled_(true),  // TODO(yangguo): set to false by default.
+      has_break_points_(false),
+      break_disabled_(false),
+      in_debug_event_listener_(false),
+      break_on_exception_(false),
+      break_on_uncaught_exception_(false),
+      script_cache_(NULL),
+      debug_info_list_(NULL),
+      isolate_(isolate) {
+  ThreadInit();
+}
+
+
+static v8::Handle<v8::Context> GetDebugEventContext(Isolate* isolate) {
+  Handle<Context> context = isolate->debug()->debugger_entry()->GetContext();
+  // Isolate::context() may have been NULL when "script collected" event
+  // occured.
+  if (context.is_null()) return v8::Local<v8::Context>();
+  Handle<Context> native_context(context->native_context());
+  return v8::Utils::ToLocal(native_context);
+}
+
+
+BreakLocationIterator::BreakLocationIterator(Handle<DebugInfo> debug_info,
+                                             BreakLocatorType type) {
+  debug_info_ = debug_info;
+  type_ = type;
+  reloc_iterator_ = NULL;
+  reloc_iterator_original_ = NULL;
+  Reset();  // Initialize the rest of the member variables.
+}
+
+
+BreakLocationIterator::~BreakLocationIterator() {
+  DCHECK(reloc_iterator_ != NULL);
+  DCHECK(reloc_iterator_original_ != NULL);
+  delete reloc_iterator_;
+  delete reloc_iterator_original_;
+}
+
+
+// Check whether a code stub with the specified major key is a possible break
+// point location when looking for source break locations.
+static bool IsSourceBreakStub(Code* code) {
+  CodeStub::Major major_key = CodeStub::GetMajorKey(code);
+  return major_key == CodeStub::CallFunction;
+}
+
+
+// Check whether a code stub with the specified major key is a possible break
+// location.
+static bool IsBreakStub(Code* code) {
+  CodeStub::Major major_key = CodeStub::GetMajorKey(code);
+  return major_key == CodeStub::CallFunction;
+}
+
+
+void BreakLocationIterator::Next() {
+  DisallowHeapAllocation no_gc;
+  DCHECK(!RinfoDone());
+
+  // Iterate through reloc info for code and original code stopping at each
+  // breakable code target.
+  bool first = break_point_ == -1;
+  while (!RinfoDone()) {
+    if (!first) RinfoNext();
+    first = false;
+    if (RinfoDone()) return;
+
+    // Whenever a statement position or (plain) position is passed update the
+    // current value of these.
+    if (RelocInfo::IsPosition(rmode())) {
+      if (RelocInfo::IsStatementPosition(rmode())) {
+        statement_position_ = static_cast<int>(
+            rinfo()->data() - debug_info_->shared()->start_position());
+      }
+      // Always update the position as we don't want that to be before the
+      // statement position.
+      position_ = static_cast<int>(
+          rinfo()->data() - debug_info_->shared()->start_position());
+      DCHECK(position_ >= 0);
+      DCHECK(statement_position_ >= 0);
+    }
+
+    // Check for break at return.
+    if (RelocInfo::IsJSReturn(rmode())) {
+      // Set the positions to the end of the function.
+      if (debug_info_->shared()->HasSourceCode()) {
+        position_ = debug_info_->shared()->end_position() -
+                    debug_info_->shared()->start_position() - 1;
+      } else {
+        position_ = 0;
+      }
+      statement_position_ = position_;
+      break_point_++;
+      return;
+    }
+
+    if (RelocInfo::IsCodeTarget(rmode())) {
+      // Check for breakable code target. Look in the original code as setting
+      // break points can cause the code targets in the running (debugged) code
+      // to be of a different kind than in the original code.
+      Address target = original_rinfo()->target_address();
+      Code* code = Code::GetCodeFromTargetAddress(target);
+
+      if (RelocInfo::IsConstructCall(rmode()) || code->is_call_stub()) {
+        break_point_++;
+        return;
+      }
+
+      // Skip below if we only want locations for calls and returns.
+      if (type_ == CALLS_AND_RETURNS) continue;
+
+      if ((code->is_inline_cache_stub() && !code->is_binary_op_stub() &&
+           !code->is_compare_ic_stub() && !code->is_to_boolean_ic_stub())) {
+        break_point_++;
+        return;
+      }
+      if (code->kind() == Code::STUB) {
+        if (IsDebuggerStatement()) {
+          break_point_++;
+          return;
+        } else if (type_ == ALL_BREAK_LOCATIONS) {
+          if (IsBreakStub(code)) {
+            break_point_++;
+            return;
+          }
+        } else {
+          DCHECK(type_ == SOURCE_BREAK_LOCATIONS);
+          if (IsSourceBreakStub(code)) {
+            break_point_++;
+            return;
+          }
+        }
+      }
+    }
+
+    if (IsDebugBreakSlot() && type_ != CALLS_AND_RETURNS) {
+      // There is always a possible break point at a debug break slot.
+      break_point_++;
+      return;
+    }
+  }
+}
+
+
+void BreakLocationIterator::Next(int count) {
+  while (count > 0) {
+    Next();
+    count--;
+  }
+}
+
+
+// Find the break point at the supplied address, or the closest one before
+// the address.
+void BreakLocationIterator::FindBreakLocationFromAddress(Address pc) {
+  // Run through all break points to locate the one closest to the address.
+  int closest_break_point = 0;
+  int distance = kMaxInt;
+  while (!Done()) {
+    // Check if this break point is closer that what was previously found.
+    if (this->pc() <= pc && pc - this->pc() < distance) {
+      closest_break_point = break_point();
+      distance = static_cast<int>(pc - this->pc());
+      // Check whether we can't get any closer.
+      if (distance == 0) break;
+    }
+    Next();
+  }
+
+  // Move to the break point found.
+  Reset();
+  Next(closest_break_point);
+}
+
+
+// Find the break point closest to the supplied source position.
+void BreakLocationIterator::FindBreakLocationFromPosition(int position,
+    BreakPositionAlignment alignment) {
+  // Run through all break points to locate the one closest to the source
+  // position.
+  int closest_break_point = 0;
+  int distance = kMaxInt;
+
+  while (!Done()) {
+    int next_position;
+    switch (alignment) {
+    case STATEMENT_ALIGNED:
+      next_position = this->statement_position();
+      break;
+    case BREAK_POSITION_ALIGNED:
+      next_position = this->position();
+      break;
+    default:
+      UNREACHABLE();
+      next_position = this->statement_position();
+    }
+    // Check if this break point is closer that what was previously found.
+    if (position <= next_position && next_position - position < distance) {
+      closest_break_point = break_point();
+      distance = next_position - position;
+      // Check whether we can't get any closer.
+      if (distance == 0) break;
+    }
+    Next();
+  }
+
+  // Move to the break point found.
+  Reset();
+  Next(closest_break_point);
+}
+
+
+void BreakLocationIterator::Reset() {
+  // Create relocation iterators for the two code objects.
+  if (reloc_iterator_ != NULL) delete reloc_iterator_;
+  if (reloc_iterator_original_ != NULL) delete reloc_iterator_original_;
+  reloc_iterator_ = new RelocIterator(
+      debug_info_->code(),
+      ~RelocInfo::ModeMask(RelocInfo::CODE_AGE_SEQUENCE));
+  reloc_iterator_original_ = new RelocIterator(
+      debug_info_->original_code(),
+      ~RelocInfo::ModeMask(RelocInfo::CODE_AGE_SEQUENCE));
+
+  // Position at the first break point.
+  break_point_ = -1;
+  position_ = 1;
+  statement_position_ = 1;
+  Next();
+}
+
+
+bool BreakLocationIterator::Done() const {
+  return RinfoDone();
+}
+
+
+void BreakLocationIterator::SetBreakPoint(Handle<Object> break_point_object) {
+  // If there is not already a real break point here patch code with debug
+  // break.
+  if (!HasBreakPoint()) SetDebugBreak();
+  DCHECK(IsDebugBreak() || IsDebuggerStatement());
+  // Set the break point information.
+  DebugInfo::SetBreakPoint(debug_info_, code_position(),
+                           position(), statement_position(),
+                           break_point_object);
+}
+
+
+void BreakLocationIterator::ClearBreakPoint(Handle<Object> break_point_object) {
+  // Clear the break point information.
+  DebugInfo::ClearBreakPoint(debug_info_, code_position(), break_point_object);
+  // If there are no more break points here remove the debug break.
+  if (!HasBreakPoint()) {
+    ClearDebugBreak();
+    DCHECK(!IsDebugBreak());
+  }
+}
+
+
+void BreakLocationIterator::SetOneShot() {
+  // Debugger statement always calls debugger. No need to modify it.
+  if (IsDebuggerStatement()) return;
+
+  // If there is a real break point here no more to do.
+  if (HasBreakPoint()) {
+    DCHECK(IsDebugBreak());
+    return;
+  }
+
+  // Patch code with debug break.
+  SetDebugBreak();
+}
+
+
+void BreakLocationIterator::ClearOneShot() {
+  // Debugger statement always calls debugger. No need to modify it.
+  if (IsDebuggerStatement()) return;
+
+  // If there is a real break point here no more to do.
+  if (HasBreakPoint()) {
+    DCHECK(IsDebugBreak());
+    return;
+  }
+
+  // Patch code removing debug break.
+  ClearDebugBreak();
+  DCHECK(!IsDebugBreak());
+}
+
+
+void BreakLocationIterator::SetDebugBreak() {
+  // Debugger statement always calls debugger. No need to modify it.
+  if (IsDebuggerStatement()) return;
+
+  // If there is already a break point here just return. This might happen if
+  // the same code is flooded with break points twice. Flooding the same
+  // function twice might happen when stepping in a function with an exception
+  // handler as the handler and the function is the same.
+  if (IsDebugBreak()) return;
+
+  if (RelocInfo::IsJSReturn(rmode())) {
+    // Patch the frame exit code with a break point.
+    SetDebugBreakAtReturn();
+  } else if (IsDebugBreakSlot()) {
+    // Patch the code in the break slot.
+    SetDebugBreakAtSlot();
+  } else {
+    // Patch the IC call.
+    SetDebugBreakAtIC();
+  }
+  DCHECK(IsDebugBreak());
+}
+
+
+void BreakLocationIterator::ClearDebugBreak() {
+  // Debugger statement always calls debugger. No need to modify it.
+  if (IsDebuggerStatement()) return;
+
+  if (RelocInfo::IsJSReturn(rmode())) {
+    // Restore the frame exit code.
+    ClearDebugBreakAtReturn();
+  } else if (IsDebugBreakSlot()) {
+    // Restore the code in the break slot.
+    ClearDebugBreakAtSlot();
+  } else {
+    // Patch the IC call.
+    ClearDebugBreakAtIC();
+  }
+  DCHECK(!IsDebugBreak());
+}
+
+
+bool BreakLocationIterator::IsStepInLocation(Isolate* isolate) {
+  if (RelocInfo::IsConstructCall(original_rmode())) {
+    return true;
+  } else if (RelocInfo::IsCodeTarget(rmode())) {
+    HandleScope scope(debug_info_->GetIsolate());
+    Address target = original_rinfo()->target_address();
+    Handle<Code> target_code(Code::GetCodeFromTargetAddress(target));
+    if (target_code->kind() == Code::STUB) {
+      return CodeStub::GetMajorKey(*target_code) == CodeStub::CallFunction;
+    }
+    return target_code->is_call_stub();
+  }
+  return false;
+}
+
+
+void BreakLocationIterator::PrepareStepIn(Isolate* isolate) {
+#ifdef DEBUG
+  HandleScope scope(isolate);
+  // Step in can only be prepared if currently positioned on an IC call,
+  // construct call or CallFunction stub call.
+  Address target = rinfo()->target_address();
+  Handle<Code> target_code(Code::GetCodeFromTargetAddress(target));
+  // All the following stuff is needed only for assertion checks so the code
+  // is wrapped in ifdef.
+  Handle<Code> maybe_call_function_stub = target_code;
+  if (IsDebugBreak()) {
+    Address original_target = original_rinfo()->target_address();
+    maybe_call_function_stub =
+        Handle<Code>(Code::GetCodeFromTargetAddress(original_target));
+  }
+  bool is_call_function_stub =
+      (maybe_call_function_stub->kind() == Code::STUB &&
+       CodeStub::GetMajorKey(*maybe_call_function_stub) ==
+           CodeStub::CallFunction);
+
+  // Step in through construct call requires no changes to the running code.
+  // Step in through getters/setters should already be prepared as well
+  // because caller of this function (Debug::PrepareStep) is expected to
+  // flood the top frame's function with one shot breakpoints.
+  // Step in through CallFunction stub should also be prepared by caller of
+  // this function (Debug::PrepareStep) which should flood target function
+  // with breakpoints.
+  DCHECK(RelocInfo::IsConstructCall(rmode()) ||
+         target_code->is_inline_cache_stub() ||
+         is_call_function_stub);
+#endif
+}
+
+
+// Check whether the break point is at a position which will exit the function.
+bool BreakLocationIterator::IsExit() const {
+  return (RelocInfo::IsJSReturn(rmode()));
+}
+
+
+bool BreakLocationIterator::HasBreakPoint() {
+  return debug_info_->HasBreakPoint(code_position());
+}
+
+
+// Check whether there is a debug break at the current position.
+bool BreakLocationIterator::IsDebugBreak() {
+  if (RelocInfo::IsJSReturn(rmode())) {
+    return IsDebugBreakAtReturn();
+  } else if (IsDebugBreakSlot()) {
+    return IsDebugBreakAtSlot();
+  } else {
+    return Debug::IsDebugBreak(rinfo()->target_address());
+  }
+}
+
+
+// Find the builtin to use for invoking the debug break
+static Handle<Code> DebugBreakForIC(Handle<Code> code, RelocInfo::Mode mode) {
+  Isolate* isolate = code->GetIsolate();
+
+  // Find the builtin debug break function matching the calling convention
+  // used by the call site.
+  if (code->is_inline_cache_stub()) {
+    switch (code->kind()) {
+      case Code::CALL_IC:
+        return isolate->builtins()->CallICStub_DebugBreak();
+
+      case Code::LOAD_IC:
+        return isolate->builtins()->LoadIC_DebugBreak();
+
+      case Code::STORE_IC:
+        return isolate->builtins()->StoreIC_DebugBreak();
+
+      case Code::KEYED_LOAD_IC:
+        return isolate->builtins()->KeyedLoadIC_DebugBreak();
+
+      case Code::KEYED_STORE_IC:
+        return isolate->builtins()->KeyedStoreIC_DebugBreak();
+
+      case Code::COMPARE_NIL_IC:
+        return isolate->builtins()->CompareNilIC_DebugBreak();
+
+      default:
+        UNREACHABLE();
+    }
+  }
+  if (RelocInfo::IsConstructCall(mode)) {
+    if (code->has_function_cache()) {
+      return isolate->builtins()->CallConstructStub_Recording_DebugBreak();
+    } else {
+      return isolate->builtins()->CallConstructStub_DebugBreak();
+    }
+  }
+  if (code->kind() == Code::STUB) {
+    DCHECK(CodeStub::GetMajorKey(*code) == CodeStub::CallFunction);
+    return isolate->builtins()->CallFunctionStub_DebugBreak();
+  }
+
+  UNREACHABLE();
+  return Handle<Code>::null();
+}
+
+
+void BreakLocationIterator::SetDebugBreakAtIC() {
+  // Patch the original code with the current address as the current address
+  // might have changed by the inline caching since the code was copied.
+  original_rinfo()->set_target_address(rinfo()->target_address());
+
+  RelocInfo::Mode mode = rmode();
+  if (RelocInfo::IsCodeTarget(mode)) {
+    Address target = rinfo()->target_address();
+    Handle<Code> target_code(Code::GetCodeFromTargetAddress(target));
+
+    // Patch the code to invoke the builtin debug break function matching the
+    // calling convention used by the call site.
+    Handle<Code> dbgbrk_code = DebugBreakForIC(target_code, mode);
+    rinfo()->set_target_address(dbgbrk_code->entry());
+  }
+}
+
+
+void BreakLocationIterator::ClearDebugBreakAtIC() {
+  // Patch the code to the original invoke.
+  rinfo()->set_target_address(original_rinfo()->target_address());
+}
+
+
+bool BreakLocationIterator::IsDebuggerStatement() {
+  return RelocInfo::DEBUG_BREAK == rmode();
+}
+
+
+bool BreakLocationIterator::IsDebugBreakSlot() {
+  return RelocInfo::DEBUG_BREAK_SLOT == rmode();
+}
+
+
+Object* BreakLocationIterator::BreakPointObjects() {
+  return debug_info_->GetBreakPointObjects(code_position());
+}
+
+
+// Clear out all the debug break code. This is ONLY supposed to be used when
+// shutting down the debugger as it will leave the break point information in
+// DebugInfo even though the code is patched back to the non break point state.
+void BreakLocationIterator::ClearAllDebugBreak() {
+  while (!Done()) {
+    ClearDebugBreak();
+    Next();
+  }
+}
+
+
+bool BreakLocationIterator::RinfoDone() const {
+  DCHECK(reloc_iterator_->done() == reloc_iterator_original_->done());
+  return reloc_iterator_->done();
+}
+
+
+void BreakLocationIterator::RinfoNext() {
+  reloc_iterator_->next();
+  reloc_iterator_original_->next();
+#ifdef DEBUG
+  DCHECK(reloc_iterator_->done() == reloc_iterator_original_->done());
+  if (!reloc_iterator_->done()) {
+    DCHECK(rmode() == original_rmode());
+  }
+#endif
+}
+
+
+// Threading support.
+void Debug::ThreadInit() {
+  thread_local_.break_count_ = 0;
+  thread_local_.break_id_ = 0;
+  thread_local_.break_frame_id_ = StackFrame::NO_ID;
+  thread_local_.last_step_action_ = StepNone;
+  thread_local_.last_statement_position_ = RelocInfo::kNoPosition;
+  thread_local_.step_count_ = 0;
+  thread_local_.last_fp_ = 0;
+  thread_local_.queued_step_count_ = 0;
+  thread_local_.step_into_fp_ = 0;
+  thread_local_.step_out_fp_ = 0;
+  // TODO(isolates): frames_are_dropped_?
+  base::NoBarrier_Store(&thread_local_.current_debug_scope_,
+                        static_cast<base::AtomicWord>(NULL));
+  thread_local_.restarter_frame_function_pointer_ = NULL;
+}
+
+
+char* Debug::ArchiveDebug(char* storage) {
+  char* to = storage;
+  MemCopy(to, reinterpret_cast<char*>(&thread_local_), sizeof(ThreadLocal));
+  ThreadInit();
+  return storage + ArchiveSpacePerThread();
+}
+
+
+char* Debug::RestoreDebug(char* storage) {
+  char* from = storage;
+  MemCopy(reinterpret_cast<char*>(&thread_local_), from, sizeof(ThreadLocal));
+  return storage + ArchiveSpacePerThread();
+}
+
+
+int Debug::ArchiveSpacePerThread() {
+  return sizeof(ThreadLocal);
+}
+
+
+ScriptCache::ScriptCache(Isolate* isolate) : HashMap(HashMap::PointersMatch),
+                                             isolate_(isolate) {
+  Heap* heap = isolate_->heap();
+  HandleScope scope(isolate_);
+
+  // Perform a GC to get rid of all unreferenced scripts.
+  heap->CollectAllGarbage(Heap::kMakeHeapIterableMask, "ScriptCache");
+
+  // Scan heap for Script objects.
+  HeapIterator iterator(heap);
+  DisallowHeapAllocation no_allocation;
+
+  for (HeapObject* obj = iterator.next(); obj != NULL; obj = iterator.next()) {
+    if (obj->IsScript() && Script::cast(obj)->HasValidSource()) {
+      Add(Handle<Script>(Script::cast(obj)));
+    }
+  }
+}
+
+
+void ScriptCache::Add(Handle<Script> script) {
+  GlobalHandles* global_handles = isolate_->global_handles();
+  // Create an entry in the hash map for the script.
+  int id = script->id()->value();
+  HashMap::Entry* entry =
+      HashMap::Lookup(reinterpret_cast<void*>(id), Hash(id), true);
+  if (entry->value != NULL) {
+#ifdef DEBUG
+    // The code deserializer may introduce duplicate Script objects.
+    // Assert that the Script objects with the same id have the same name.
+    Handle<Script> found(reinterpret_cast<Script**>(entry->value));
+    DCHECK(script->id() == found->id());
+    DCHECK(!script->name()->IsString() ||
+           String::cast(script->name())->Equals(String::cast(found->name())));
+#endif
+    return;
+  }
+  // Globalize the script object, make it weak and use the location of the
+  // global handle as the value in the hash map.
+  Handle<Script> script_ =
+      Handle<Script>::cast(global_handles->Create(*script));
+  GlobalHandles::MakeWeak(reinterpret_cast<Object**>(script_.location()),
+                          this,
+                          ScriptCache::HandleWeakScript);
+  entry->value = script_.location();
+}
+
+
+Handle<FixedArray> ScriptCache::GetScripts() {
+  Factory* factory = isolate_->factory();
+  Handle<FixedArray> instances = factory->NewFixedArray(occupancy());
+  int count = 0;
+  for (HashMap::Entry* entry = Start(); entry != NULL; entry = Next(entry)) {
+    DCHECK(entry->value != NULL);
+    if (entry->value != NULL) {
+      instances->set(count, *reinterpret_cast<Script**>(entry->value));
+      count++;
+    }
+  }
+  return instances;
+}
+
+
+void ScriptCache::Clear() {
+  // Iterate the script cache to get rid of all the weak handles.
+  for (HashMap::Entry* entry = Start(); entry != NULL; entry = Next(entry)) {
+    DCHECK(entry != NULL);
+    Object** location = reinterpret_cast<Object**>(entry->value);
+    DCHECK((*location)->IsScript());
+    GlobalHandles::ClearWeakness(location);
+    GlobalHandles::Destroy(location);
+  }
+  // Clear the content of the hash map.
+  HashMap::Clear();
+}
+
+
+void ScriptCache::HandleWeakScript(
+    const v8::WeakCallbackData<v8::Value, void>& data) {
+  // Retrieve the script identifier.
+  Handle<Object> object = Utils::OpenHandle(*data.GetValue());
+  int id = Handle<Script>::cast(object)->id()->value();
+  void* key = reinterpret_cast<void*>(id);
+  uint32_t hash = Hash(id);
+
+  // Remove the corresponding entry from the cache.
+  ScriptCache* script_cache =
+      reinterpret_cast<ScriptCache*>(data.GetParameter());
+  HashMap::Entry* entry = script_cache->Lookup(key, hash, false);
+  Object** location = reinterpret_cast<Object**>(entry->value);
+  script_cache->Remove(key, hash);
+
+  // Clear the weak handle.
+  GlobalHandles::Destroy(location);
+}
+
+
+void Debug::HandlePhantomDebugInfo(
+    const v8::PhantomCallbackData<DebugInfoListNode>& data) {
+  Debug* debug = reinterpret_cast<Isolate*>(data.GetIsolate())->debug();
+  DebugInfoListNode* node = data.GetParameter();
+  debug->RemoveDebugInfo(node);
+#ifdef DEBUG
+  for (DebugInfoListNode* n = debug->debug_info_list_;
+       n != NULL;
+       n = n->next()) {
+    DCHECK(n != node);
+  }
+#endif
+}
+
+
+DebugInfoListNode::DebugInfoListNode(DebugInfo* debug_info): next_(NULL) {
+  // Globalize the request debug info object and make it weak.
+  GlobalHandles* global_handles = debug_info->GetIsolate()->global_handles();
+  debug_info_ = Handle<DebugInfo>::cast(global_handles->Create(debug_info));
+  typedef PhantomCallbackData<void>::Callback Callback;
+  GlobalHandles::MakePhantom(
+      reinterpret_cast<Object**>(debug_info_.location()), this,
+      reinterpret_cast<Callback>(Debug::HandlePhantomDebugInfo));
+}
+
+
+DebugInfoListNode::~DebugInfoListNode() {
+  GlobalHandles::Destroy(reinterpret_cast<Object**>(debug_info_.location()));
+}
+
+
+bool Debug::CompileDebuggerScript(Isolate* isolate, int index) {
+  Factory* factory = isolate->factory();
+  HandleScope scope(isolate);
+
+  // Bail out if the index is invalid.
+  if (index == -1) return false;
+
+  // Find source and name for the requested script.
+  Handle<String> source_code =
+      isolate->bootstrapper()->NativesSourceLookup(index);
+  Vector<const char> name = Natives::GetScriptName(index);
+  Handle<String> script_name =
+      factory->NewStringFromAscii(name).ToHandleChecked();
+  Handle<Context> context = isolate->native_context();
+
+  // Compile the script.
+  Handle<SharedFunctionInfo> function_info;
+  function_info = Compiler::CompileScript(
+      source_code, script_name, 0, 0, false, context, NULL, NULL,
+      ScriptCompiler::kNoCompileOptions, NATIVES_CODE);
+
+  // Silently ignore stack overflows during compilation.
+  if (function_info.is_null()) {
+    DCHECK(isolate->has_pending_exception());
+    isolate->clear_pending_exception();
+    return false;
+  }
+
+  // Execute the shared function in the debugger context.
+  Handle<JSFunction> function =
+      factory->NewFunctionFromSharedFunctionInfo(function_info, context);
+
+  MaybeHandle<Object> maybe_exception;
+  MaybeHandle<Object> result = Execution::TryCall(
+      function, handle(context->global_proxy()), 0, NULL, &maybe_exception);
+
+  // Check for caught exceptions.
+  if (result.is_null()) {
+    DCHECK(!isolate->has_pending_exception());
+    MessageLocation computed_location;
+    isolate->ComputeLocation(&computed_location);
+    Handle<Object> message = MessageHandler::MakeMessageObject(
+        isolate, "error_loading_debugger", &computed_location,
+        Vector<Handle<Object> >::empty(), Handle<JSArray>());
+    DCHECK(!isolate->has_pending_exception());
+    Handle<Object> exception;
+    if (maybe_exception.ToHandle(&exception)) {
+      isolate->set_pending_exception(*exception);
+      MessageHandler::ReportMessage(isolate, NULL, message);
+      isolate->clear_pending_exception();
+    }
+    return false;
+  }
+
+  // Mark this script as native and return successfully.
+  Handle<Script> script(Script::cast(function->shared()->script()));
+  script->set_type(Smi::FromInt(Script::TYPE_NATIVE));
+  return true;
+}
+
+
+bool Debug::Load() {
+  // Return if debugger is already loaded.
+  if (is_loaded()) return true;
+
+  // Bail out if we're already in the process of compiling the native
+  // JavaScript source code for the debugger.
+  if (is_suppressed_) return false;
+  SuppressDebug while_loading(this);
+
+  // Disable breakpoints and interrupts while compiling and running the
+  // debugger scripts including the context creation code.
+  DisableBreak disable(this, true);
+  PostponeInterruptsScope postpone(isolate_);
+
+  // Create the debugger context.
+  HandleScope scope(isolate_);
+  ExtensionConfiguration no_extensions;
+  Handle<Context> context =
+      isolate_->bootstrapper()->CreateEnvironment(
+          MaybeHandle<JSGlobalProxy>(),
+          v8::Handle<ObjectTemplate>(),
+          &no_extensions);
+
+  // Fail if no context could be created.
+  if (context.is_null()) return false;
+
+  // Use the debugger context.
+  SaveContext save(isolate_);
+  isolate_->set_context(*context);
+
+  // Expose the builtins object in the debugger context.
+  Handle<String> key = isolate_->factory()->InternalizeOneByteString(
+      STATIC_CHAR_VECTOR("builtins"));
+  Handle<GlobalObject> global =
+      Handle<GlobalObject>(context->global_object(), isolate_);
+  Handle<JSBuiltinsObject> builtin =
+      Handle<JSBuiltinsObject>(global->builtins(), isolate_);
+  RETURN_ON_EXCEPTION_VALUE(
+      isolate_, Object::SetProperty(global, key, builtin, SLOPPY), false);
+
+  // Compile the JavaScript for the debugger in the debugger context.
+  bool caught_exception =
+      !CompileDebuggerScript(isolate_, Natives::GetIndex("mirror")) ||
+      !CompileDebuggerScript(isolate_, Natives::GetIndex("debug"));
+
+  if (FLAG_enable_liveedit) {
+    caught_exception = caught_exception ||
+        !CompileDebuggerScript(isolate_, Natives::GetIndex("liveedit"));
+  }
+  // Check for caught exceptions.
+  if (caught_exception) return false;
+
+  debug_context_ = Handle<Context>::cast(
+      isolate_->global_handles()->Create(*context));
+  return true;
+}
+
+
+void Debug::Unload() {
+  ClearAllBreakPoints();
+  ClearStepping();
+
+  // Return debugger is not loaded.
+  if (!is_loaded()) return;
+
+  // Clear the script cache.
+  if (script_cache_ != NULL) {
+    delete script_cache_;
+    script_cache_ = NULL;
+  }
+
+  // Clear debugger context global handle.
+  GlobalHandles::Destroy(Handle<Object>::cast(debug_context_).location());
+  debug_context_ = Handle<Context>();
+}
+
+
+void Debug::Break(Arguments args, JavaScriptFrame* frame) {
+  Heap* heap = isolate_->heap();
+  HandleScope scope(isolate_);
+  DCHECK(args.length() == 0);
+
+  // Initialize LiveEdit.
+  LiveEdit::InitializeThreadLocal(this);
+
+  // Just continue if breaks are disabled or debugger cannot be loaded.
+  if (break_disabled()) return;
+
+  // Enter the debugger.
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Postpone interrupt during breakpoint processing.
+  PostponeInterruptsScope postpone(isolate_);
+
+  // Get the debug info (create it if it does not exist).
+  Handle<SharedFunctionInfo> shared =
+      Handle<SharedFunctionInfo>(frame->function()->shared());
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+
+  // Find the break point where execution has stopped.
+  BreakLocationIterator break_location_iterator(debug_info,
+                                                ALL_BREAK_LOCATIONS);
+  // pc points to the instruction after the current one, possibly a break
+  // location as well. So the "- 1" to exclude it from the search.
+  break_location_iterator.FindBreakLocationFromAddress(frame->pc() - 1);
+
+  // Check whether step next reached a new statement.
+  if (!StepNextContinue(&break_location_iterator, frame)) {
+    // Decrease steps left if performing multiple steps.
+    if (thread_local_.step_count_ > 0) {
+      thread_local_.step_count_--;
+    }
+  }
+
+  // If there is one or more real break points check whether any of these are
+  // triggered.
+  Handle<Object> break_points_hit(heap->undefined_value(), isolate_);
+  if (break_location_iterator.HasBreakPoint()) {
+    Handle<Object> break_point_objects =
+        Handle<Object>(break_location_iterator.BreakPointObjects(), isolate_);
+    break_points_hit = CheckBreakPoints(break_point_objects);
+  }
+
+  // If step out is active skip everything until the frame where we need to step
+  // out to is reached, unless real breakpoint is hit.
+  if (StepOutActive() &&
+      frame->fp() != thread_local_.step_out_fp_ &&
+      break_points_hit->IsUndefined() ) {
+      // Step count should always be 0 for StepOut.
+      DCHECK(thread_local_.step_count_ == 0);
+  } else if (!break_points_hit->IsUndefined() ||
+             (thread_local_.last_step_action_ != StepNone &&
+              thread_local_.step_count_ == 0)) {
+    // Notify debugger if a real break point is triggered or if performing
+    // single stepping with no more steps to perform. Otherwise do another step.
+
+    // Clear all current stepping setup.
+    ClearStepping();
+
+    if (thread_local_.queued_step_count_ > 0) {
+      // Perform queued steps
+      int step_count = thread_local_.queued_step_count_;
+
+      // Clear queue
+      thread_local_.queued_step_count_ = 0;
+
+      PrepareStep(StepNext, step_count, StackFrame::NO_ID);
+    } else {
+      // Notify the debug event listeners.
+      OnDebugBreak(break_points_hit, false);
+    }
+  } else if (thread_local_.last_step_action_ != StepNone) {
+    // Hold on to last step action as it is cleared by the call to
+    // ClearStepping.
+    StepAction step_action = thread_local_.last_step_action_;
+    int step_count = thread_local_.step_count_;
+
+    // If StepNext goes deeper in code, StepOut until original frame
+    // and keep step count queued up in the meantime.
+    if (step_action == StepNext && frame->fp() < thread_local_.last_fp_) {
+      // Count frames until target frame
+      int count = 0;
+      JavaScriptFrameIterator it(isolate_);
+      while (!it.done() && it.frame()->fp() < thread_local_.last_fp_) {
+        count++;
+        it.Advance();
+      }
+
+      // Check that we indeed found the frame we are looking for.
+      CHECK(!it.done() && (it.frame()->fp() == thread_local_.last_fp_));
+      if (step_count > 1) {
+        // Save old count and action to continue stepping after StepOut.
+        thread_local_.queued_step_count_ = step_count - 1;
+      }
+
+      // Set up for StepOut to reach target frame.
+      step_action = StepOut;
+      step_count = count;
+    }
+
+    // Clear all current stepping setup.
+    ClearStepping();
+
+    // Set up for the remaining steps.
+    PrepareStep(step_action, step_count, StackFrame::NO_ID);
+  }
+}
+
+
+RUNTIME_FUNCTION(Debug_Break) {
+  // Get the top-most JavaScript frame.
+  JavaScriptFrameIterator it(isolate);
+  isolate->debug()->Break(args, it.frame());
+  isolate->debug()->SetAfterBreakTarget(it.frame());
+  return isolate->heap()->undefined_value();
+}
+
+
+// Check the break point objects for whether one or more are actually
+// triggered. This function returns a JSArray with the break point objects
+// which is triggered.
+Handle<Object> Debug::CheckBreakPoints(Handle<Object> break_point_objects) {
+  Factory* factory = isolate_->factory();
+
+  // Count the number of break points hit. If there are multiple break points
+  // they are in a FixedArray.
+  Handle<FixedArray> break_points_hit;
+  int break_points_hit_count = 0;
+  DCHECK(!break_point_objects->IsUndefined());
+  if (break_point_objects->IsFixedArray()) {
+    Handle<FixedArray> array(FixedArray::cast(*break_point_objects));
+    break_points_hit = factory->NewFixedArray(array->length());
+    for (int i = 0; i < array->length(); i++) {
+      Handle<Object> o(array->get(i), isolate_);
+      if (CheckBreakPoint(o)) {
+        break_points_hit->set(break_points_hit_count++, *o);
+      }
+    }
+  } else {
+    break_points_hit = factory->NewFixedArray(1);
+    if (CheckBreakPoint(break_point_objects)) {
+      break_points_hit->set(break_points_hit_count++, *break_point_objects);
+    }
+  }
+
+  // Return undefined if no break points were triggered.
+  if (break_points_hit_count == 0) {
+    return factory->undefined_value();
+  }
+  // Return break points hit as a JSArray.
+  Handle<JSArray> result = factory->NewJSArrayWithElements(break_points_hit);
+  result->set_length(Smi::FromInt(break_points_hit_count));
+  return result;
+}
+
+
+// Check whether a single break point object is triggered.
+bool Debug::CheckBreakPoint(Handle<Object> break_point_object) {
+  Factory* factory = isolate_->factory();
+  HandleScope scope(isolate_);
+
+  // Ignore check if break point object is not a JSObject.
+  if (!break_point_object->IsJSObject()) return true;
+
+  // Get the function IsBreakPointTriggered (defined in debug-debugger.js).
+  Handle<String> is_break_point_triggered_string =
+      factory->InternalizeOneByteString(
+          STATIC_CHAR_VECTOR("IsBreakPointTriggered"));
+  Handle<GlobalObject> debug_global(debug_context()->global_object());
+  Handle<JSFunction> check_break_point =
+    Handle<JSFunction>::cast(Object::GetProperty(
+        debug_global, is_break_point_triggered_string).ToHandleChecked());
+
+  // Get the break id as an object.
+  Handle<Object> break_id = factory->NewNumberFromInt(Debug::break_id());
+
+  // Call HandleBreakPointx.
+  Handle<Object> argv[] = { break_id, break_point_object };
+  Handle<Object> result;
+  if (!Execution::TryCall(check_break_point,
+                          isolate_->js_builtins_object(),
+                          arraysize(argv),
+                          argv).ToHandle(&result)) {
+    return false;
+  }
+
+  // Return whether the break point is triggered.
+  return result->IsTrue();
+}
+
+
+// Check whether the function has debug information.
+bool Debug::HasDebugInfo(Handle<SharedFunctionInfo> shared) {
+  return !shared->debug_info()->IsUndefined();
+}
+
+
+// Return the debug info for this function. EnsureDebugInfo must be called
+// prior to ensure the debug info has been generated for shared.
+Handle<DebugInfo> Debug::GetDebugInfo(Handle<SharedFunctionInfo> shared) {
+  DCHECK(HasDebugInfo(shared));
+  return Handle<DebugInfo>(DebugInfo::cast(shared->debug_info()));
+}
+
+
+bool Debug::SetBreakPoint(Handle<JSFunction> function,
+                          Handle<Object> break_point_object,
+                          int* source_position) {
+  HandleScope scope(isolate_);
+
+  PrepareForBreakPoints();
+
+  // Make sure the function is compiled and has set up the debug info.
+  Handle<SharedFunctionInfo> shared(function->shared());
+  if (!EnsureDebugInfo(shared, function)) {
+    // Return if retrieving debug info failed.
+    return true;
+  }
+
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+  // Source positions starts with zero.
+  DCHECK(*source_position >= 0);
+
+  // Find the break point and change it.
+  BreakLocationIterator it(debug_info, SOURCE_BREAK_LOCATIONS);
+  it.FindBreakLocationFromPosition(*source_position, STATEMENT_ALIGNED);
+  it.SetBreakPoint(break_point_object);
+
+  *source_position = it.statement_position();
+
+  // At least one active break point now.
+  return debug_info->GetBreakPointCount() > 0;
+}
+
+
+bool Debug::SetBreakPointForScript(Handle<Script> script,
+                                   Handle<Object> break_point_object,
+                                   int* source_position,
+                                   BreakPositionAlignment alignment) {
+  HandleScope scope(isolate_);
+
+  PrepareForBreakPoints();
+
+  // Obtain shared function info for the function.
+  Object* result = FindSharedFunctionInfoInScript(script, *source_position);
+  if (result->IsUndefined()) return false;
+
+  // Make sure the function has set up the debug info.
+  Handle<SharedFunctionInfo> shared(SharedFunctionInfo::cast(result));
+  if (!EnsureDebugInfo(shared, Handle<JSFunction>::null())) {
+    // Return if retrieving debug info failed.
+    return false;
+  }
+
+  // Find position within function. The script position might be before the
+  // source position of the first function.
+  int position;
+  if (shared->start_position() > *source_position) {
+    position = 0;
+  } else {
+    position = *source_position - shared->start_position();
+  }
+
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+  // Source positions starts with zero.
+  DCHECK(position >= 0);
+
+  // Find the break point and change it.
+  BreakLocationIterator it(debug_info, SOURCE_BREAK_LOCATIONS);
+  it.FindBreakLocationFromPosition(position, alignment);
+  it.SetBreakPoint(break_point_object);
+
+  position = (alignment == STATEMENT_ALIGNED) ? it.statement_position()
+                                              : it.position();
+
+  *source_position = position + shared->start_position();
+
+  // At least one active break point now.
+  DCHECK(debug_info->GetBreakPointCount() > 0);
+  return true;
+}
+
+
+void Debug::ClearBreakPoint(Handle<Object> break_point_object) {
+  HandleScope scope(isolate_);
+
+  DebugInfoListNode* node = debug_info_list_;
+  while (node != NULL) {
+    Object* result = DebugInfo::FindBreakPointInfo(node->debug_info(),
+                                                   break_point_object);
+    if (!result->IsUndefined()) {
+      // Get information in the break point.
+      BreakPointInfo* break_point_info = BreakPointInfo::cast(result);
+      Handle<DebugInfo> debug_info = node->debug_info();
+
+      // Find the break point and clear it.
+      BreakLocationIterator it(debug_info, SOURCE_BREAK_LOCATIONS);
+      it.FindBreakLocationFromAddress(debug_info->code()->entry() +
+          break_point_info->code_position()->value());
+      it.ClearBreakPoint(break_point_object);
+
+      // If there are no more break points left remove the debug info for this
+      // function.
+      if (debug_info->GetBreakPointCount() == 0) {
+        RemoveDebugInfoAndClearFromShared(debug_info);
+      }
+
+      return;
+    }
+    node = node->next();
+  }
+}
+
+
+void Debug::ClearAllBreakPoints() {
+  DebugInfoListNode* node = debug_info_list_;
+  while (node != NULL) {
+    // Remove all debug break code.
+    BreakLocationIterator it(node->debug_info(), ALL_BREAK_LOCATIONS);
+    it.ClearAllDebugBreak();
+    node = node->next();
+  }
+
+  // Remove all debug info.
+  while (debug_info_list_ != NULL) {
+    RemoveDebugInfoAndClearFromShared(debug_info_list_->debug_info());
+  }
+}
+
+
+void Debug::FloodWithOneShot(Handle<JSFunction> function,
+                             BreakLocatorType type) {
+  // Do not ever break in native functions.
+  if (function->IsFromNativeScript()) return;
+
+  PrepareForBreakPoints();
+
+  // Make sure the function is compiled and has set up the debug info.
+  Handle<SharedFunctionInfo> shared(function->shared());
+  if (!EnsureDebugInfo(shared, function)) {
+    // Return if we failed to retrieve the debug info.
+    return;
+  }
+
+  // Flood the function with break points.
+  BreakLocationIterator it(GetDebugInfo(shared), type);
+  while (!it.Done()) {
+    it.SetOneShot();
+    it.Next();
+  }
+}
+
+
+void Debug::FloodBoundFunctionWithOneShot(Handle<JSFunction> function) {
+  Handle<FixedArray> new_bindings(function->function_bindings());
+  Handle<Object> bindee(new_bindings->get(JSFunction::kBoundFunctionIndex),
+                        isolate_);
+
+  if (!bindee.is_null() && bindee->IsJSFunction() &&
+      !JSFunction::cast(*bindee)->IsFromNativeScript()) {
+    Handle<JSFunction> bindee_function(JSFunction::cast(*bindee));
+    FloodWithOneShotGeneric(bindee_function);
+  }
+}
+
+
+void Debug::FloodDefaultConstructorWithOneShot(Handle<JSFunction> function) {
+  DCHECK(function->shared()->is_default_constructor());
+  // Instead of stepping into the function we directly step into the super class
+  // constructor.
+  Isolate* isolate = function->GetIsolate();
+  PrototypeIterator iter(isolate, function);
+  Handle<Object> proto = PrototypeIterator::GetCurrent(iter);
+  if (!proto->IsJSFunction()) return;  // Object.prototype
+  Handle<JSFunction> function_proto = Handle<JSFunction>::cast(proto);
+  FloodWithOneShotGeneric(function_proto);
+}
+
+
+void Debug::FloodWithOneShotGeneric(Handle<JSFunction> function,
+                                    Handle<Object> holder) {
+  if (function->shared()->bound()) {
+    FloodBoundFunctionWithOneShot(function);
+  } else if (function->shared()->is_default_constructor()) {
+    FloodDefaultConstructorWithOneShot(function);
+  } else {
+    Isolate* isolate = function->GetIsolate();
+    // Don't allow step into functions in the native context.
+    if (function->shared()->code() ==
+            isolate->builtins()->builtin(Builtins::kFunctionApply) ||
+        function->shared()->code() ==
+            isolate->builtins()->builtin(Builtins::kFunctionCall)) {
+      // Handle function.apply and function.call separately to flood the
+      // function to be called and not the code for Builtins::FunctionApply or
+      // Builtins::FunctionCall. The receiver of call/apply is the target
+      // function.
+      if (!holder.is_null() && holder->IsJSFunction()) {
+        Handle<JSFunction> js_function = Handle<JSFunction>::cast(holder);
+        FloodWithOneShotGeneric(js_function);
+      }
+    } else {
+      FloodWithOneShot(function);
+    }
+  }
+}
+
+
+void Debug::FloodHandlerWithOneShot() {
+  // Iterate through the JavaScript stack looking for handlers.
+  StackFrame::Id id = break_frame_id();
+  if (id == StackFrame::NO_ID) {
+    // If there is no JavaScript stack don't do anything.
+    return;
+  }
+  for (JavaScriptFrameIterator it(isolate_, id); !it.done(); it.Advance()) {
+    JavaScriptFrame* frame = it.frame();
+    if (frame->HasHandler()) {
+      // Flood the function with the catch block with break points
+      FloodWithOneShot(Handle<JSFunction>(frame->function()));
+      return;
+    }
+  }
+}
+
+
+void Debug::ChangeBreakOnException(ExceptionBreakType type, bool enable) {
+  if (type == BreakUncaughtException) {
+    break_on_uncaught_exception_ = enable;
+  } else {
+    break_on_exception_ = enable;
+  }
+}
+
+
+bool Debug::IsBreakOnException(ExceptionBreakType type) {
+  if (type == BreakUncaughtException) {
+    return break_on_uncaught_exception_;
+  } else {
+    return break_on_exception_;
+  }
+}
+
+
+void Debug::PrepareStep(StepAction step_action,
+                        int step_count,
+                        StackFrame::Id frame_id) {
+  HandleScope scope(isolate_);
+
+  PrepareForBreakPoints();
+
+  DCHECK(in_debug_scope());
+
+  // Remember this step action and count.
+  thread_local_.last_step_action_ = step_action;
+  if (step_action == StepOut) {
+    // For step out target frame will be found on the stack so there is no need
+    // to set step counter for it. It's expected to always be 0 for StepOut.
+    thread_local_.step_count_ = 0;
+  } else {
+    thread_local_.step_count_ = step_count;
+  }
+
+  // Get the frame where the execution has stopped and skip the debug frame if
+  // any. The debug frame will only be present if execution was stopped due to
+  // hitting a break point. In other situations (e.g. unhandled exception) the
+  // debug frame is not present.
+  StackFrame::Id id = break_frame_id();
+  if (id == StackFrame::NO_ID) {
+    // If there is no JavaScript stack don't do anything.
+    return;
+  }
+  if (frame_id != StackFrame::NO_ID) {
+    id = frame_id;
+  }
+  JavaScriptFrameIterator frames_it(isolate_, id);
+  JavaScriptFrame* frame = frames_it.frame();
+
+  // First of all ensure there is one-shot break points in the top handler
+  // if any.
+  FloodHandlerWithOneShot();
+
+  // If the function on the top frame is unresolved perform step out. This will
+  // be the case when calling unknown function and having the debugger stopped
+  // in an unhandled exception.
+  if (!frame->function()->IsJSFunction()) {
+    // Step out: Find the calling JavaScript frame and flood it with
+    // breakpoints.
+    frames_it.Advance();
+    // Fill the function to return to with one-shot break points.
+    JSFunction* function = frames_it.frame()->function();
+    FloodWithOneShot(Handle<JSFunction>(function));
+    return;
+  }
+
+  // Get the debug info (create it if it does not exist).
+  Handle<JSFunction> function(frame->function());
+  Handle<SharedFunctionInfo> shared(function->shared());
+  if (!EnsureDebugInfo(shared, function)) {
+    // Return if ensuring debug info failed.
+    return;
+  }
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+
+  // Find the break location where execution has stopped.
+  BreakLocationIterator it(debug_info, ALL_BREAK_LOCATIONS);
+  // pc points to the instruction after the current one, possibly a break
+  // location as well. So the "- 1" to exclude it from the search.
+  it.FindBreakLocationFromAddress(frame->pc() - 1);
+
+  // Compute whether or not the target is a call target.
+  bool is_load_or_store = false;
+  bool is_inline_cache_stub = false;
+  bool is_at_restarted_function = false;
+  Handle<Code> call_function_stub;
+
+  if (thread_local_.restarter_frame_function_pointer_ == NULL) {
+    if (RelocInfo::IsCodeTarget(it.rinfo()->rmode())) {
+      bool is_call_target = false;
+      Address target = it.rinfo()->target_address();
+      Code* code = Code::GetCodeFromTargetAddress(target);
+      if (code->is_call_stub()) {
+        is_call_target = true;
+      }
+      if (code->is_inline_cache_stub()) {
+        is_inline_cache_stub = true;
+        is_load_or_store = !is_call_target;
+      }
+
+      // Check if target code is CallFunction stub.
+      Code* maybe_call_function_stub = code;
+      // If there is a breakpoint at this line look at the original code to
+      // check if it is a CallFunction stub.
+      if (it.IsDebugBreak()) {
+        Address original_target = it.original_rinfo()->target_address();
+        maybe_call_function_stub =
+            Code::GetCodeFromTargetAddress(original_target);
+      }
+      if ((maybe_call_function_stub->kind() == Code::STUB &&
+           CodeStub::GetMajorKey(maybe_call_function_stub) ==
+               CodeStub::CallFunction) ||
+          maybe_call_function_stub->is_call_stub()) {
+        // Save reference to the code as we may need it to find out arguments
+        // count for 'step in' later.
+        call_function_stub = Handle<Code>(maybe_call_function_stub);
+      }
+    }
+  } else {
+    is_at_restarted_function = true;
+  }
+
+  // If this is the last break code target step out is the only possibility.
+  if (it.IsExit() || step_action == StepOut) {
+    if (step_action == StepOut) {
+      // Skip step_count frames starting with the current one.
+      while (step_count-- > 0 && !frames_it.done()) {
+        frames_it.Advance();
+      }
+    } else {
+      DCHECK(it.IsExit());
+      frames_it.Advance();
+    }
+    // Skip builtin functions on the stack.
+    while (!frames_it.done() &&
+           frames_it.frame()->function()->IsFromNativeScript()) {
+      frames_it.Advance();
+    }
+    // Step out: If there is a JavaScript caller frame, we need to
+    // flood it with breakpoints.
+    if (!frames_it.done()) {
+      // Fill the function to return to with one-shot break points.
+      JSFunction* function = frames_it.frame()->function();
+      FloodWithOneShot(Handle<JSFunction>(function));
+      // Set target frame pointer.
+      ActivateStepOut(frames_it.frame());
+    }
+  } else if (!(is_inline_cache_stub || RelocInfo::IsConstructCall(it.rmode()) ||
+               !call_function_stub.is_null() || is_at_restarted_function)
+             || step_action == StepNext || step_action == StepMin) {
+    // Step next or step min.
+
+    // Fill the current function with one-shot break points.
+    // If we are stepping into another frame, only fill calls and returns.
+    FloodWithOneShot(function, step_action == StepFrame ? CALLS_AND_RETURNS
+                                                        : ALL_BREAK_LOCATIONS);
+
+    // Remember source position and frame to handle step next.
+    thread_local_.last_statement_position_ =
+        debug_info->code()->SourceStatementPosition(frame->pc());
+    thread_local_.last_fp_ = frame->UnpaddedFP();
+  } else {
+    // If there's restarter frame on top of the stack, just get the pointer
+    // to function which is going to be restarted.
+    if (is_at_restarted_function) {
+      Handle<JSFunction> restarted_function(
+          JSFunction::cast(*thread_local_.restarter_frame_function_pointer_));
+      FloodWithOneShot(restarted_function);
+    } else if (!call_function_stub.is_null()) {
+      // If it's CallFunction stub ensure target function is compiled and flood
+      // it with one shot breakpoints.
+      bool is_call_ic = call_function_stub->kind() == Code::CALL_IC;
+
+      // Find out number of arguments from the stub minor key.
+      uint32_t key = call_function_stub->stub_key();
+      // Argc in the stub is the number of arguments passed - not the
+      // expected arguments of the called function.
+      int call_function_arg_count = is_call_ic
+          ? CallICStub::ExtractArgcFromMinorKey(CodeStub::MinorKeyFromKey(key))
+          : CallFunctionStub::ExtractArgcFromMinorKey(
+              CodeStub::MinorKeyFromKey(key));
+
+      DCHECK(is_call_ic ||
+             CodeStub::GetMajorKey(*call_function_stub) ==
+                 CodeStub::MajorKeyFromKey(key));
+
+      // Find target function on the expression stack.
+      // Expression stack looks like this (top to bottom):
+      // argN
+      // ...
+      // arg0
+      // Receiver
+      // Function to call
+      int expressions_count = frame->ComputeExpressionsCount();
+      DCHECK(expressions_count - 2 - call_function_arg_count >= 0);
+      Object* fun = frame->GetExpression(
+          expressions_count - 2 - call_function_arg_count);
+
+      // Flood the actual target of call/apply.
+      if (fun->IsJSFunction()) {
+        Isolate* isolate = JSFunction::cast(fun)->GetIsolate();
+        Code* apply = isolate->builtins()->builtin(Builtins::kFunctionApply);
+        Code* call = isolate->builtins()->builtin(Builtins::kFunctionCall);
+        while (fun->IsJSFunction()) {
+          Code* code = JSFunction::cast(fun)->shared()->code();
+          if (code != apply && code != call) break;
+          fun = frame->GetExpression(
+              expressions_count - 1 - call_function_arg_count);
+        }
+      }
+
+      if (fun->IsJSFunction()) {
+        Handle<JSFunction> js_function(JSFunction::cast(fun));
+        FloodWithOneShotGeneric(js_function);
+      }
+    }
+
+    // Fill the current function with one-shot break points even for step in on
+    // a call target as the function called might be a native function for
+    // which step in will not stop. It also prepares for stepping in
+    // getters/setters.
+    // If we are stepping into another frame, only fill calls and returns.
+    FloodWithOneShot(function, step_action == StepFrame ? CALLS_AND_RETURNS
+                                                        : ALL_BREAK_LOCATIONS);
+
+    if (is_load_or_store) {
+      // Remember source position and frame to handle step in getter/setter. If
+      // there is a custom getter/setter it will be handled in
+      // Object::Get/SetPropertyWithAccessor, otherwise the step action will be
+      // propagated on the next Debug::Break.
+      thread_local_.last_statement_position_ =
+          debug_info->code()->SourceStatementPosition(frame->pc());
+      thread_local_.last_fp_ = frame->UnpaddedFP();
+    }
+
+    // Step in or Step in min
+    it.PrepareStepIn(isolate_);
+    ActivateStepIn(frame);
+  }
+}
+
+
+// Check whether the current debug break should be reported to the debugger. It
+// is used to have step next and step in only report break back to the debugger
+// if on a different frame or in a different statement. In some situations
+// there will be several break points in the same statement when the code is
+// flooded with one-shot break points. This function helps to perform several
+// steps before reporting break back to the debugger.
+bool Debug::StepNextContinue(BreakLocationIterator* break_location_iterator,
+                             JavaScriptFrame* frame) {
+  // StepNext and StepOut shouldn't bring us deeper in code, so last frame
+  // shouldn't be a parent of current frame.
+  StepAction step_action = thread_local_.last_step_action_;
+
+  if (step_action == StepNext || step_action == StepOut) {
+    if (frame->fp() < thread_local_.last_fp_) return true;
+  }
+
+  // We stepped into a new frame if the frame pointer changed.
+  if (step_action == StepFrame) {
+    return frame->UnpaddedFP() == thread_local_.last_fp_;
+  }
+
+  // If the step last action was step next or step in make sure that a new
+  // statement is hit.
+  if (step_action == StepNext || step_action == StepIn) {
+    // Never continue if returning from function.
+    if (break_location_iterator->IsExit()) return false;
+
+    // Continue if we are still on the same frame and in the same statement.
+    int current_statement_position =
+        break_location_iterator->code()->SourceStatementPosition(frame->pc());
+    return thread_local_.last_fp_ == frame->UnpaddedFP() &&
+        thread_local_.last_statement_position_ == current_statement_position;
+  }
+
+  // No step next action - don't continue.
+  return false;
+}
+
+
+// Check whether the code object at the specified address is a debug break code
+// object.
+bool Debug::IsDebugBreak(Address addr) {
+  Code* code = Code::GetCodeFromTargetAddress(addr);
+  return code->is_debug_stub() && code->extra_ic_state() == DEBUG_BREAK;
+}
+
+
+
+
+
+// Simple function for returning the source positions for active break points.
+Handle<Object> Debug::GetSourceBreakLocations(
+    Handle<SharedFunctionInfo> shared,
+    BreakPositionAlignment position_alignment) {
+  Isolate* isolate = shared->GetIsolate();
+  Heap* heap = isolate->heap();
+  if (!HasDebugInfo(shared)) {
+    return Handle<Object>(heap->undefined_value(), isolate);
+  }
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+  if (debug_info->GetBreakPointCount() == 0) {
+    return Handle<Object>(heap->undefined_value(), isolate);
+  }
+  Handle<FixedArray> locations =
+      isolate->factory()->NewFixedArray(debug_info->GetBreakPointCount());
+  int count = 0;
+  for (int i = 0; i < debug_info->break_points()->length(); i++) {
+    if (!debug_info->break_points()->get(i)->IsUndefined()) {
+      BreakPointInfo* break_point_info =
+          BreakPointInfo::cast(debug_info->break_points()->get(i));
+      if (break_point_info->GetBreakPointCount() > 0) {
+        Smi* position = NULL;
+        switch (position_alignment) {
+          case STATEMENT_ALIGNED:
+            position = break_point_info->statement_position();
+            break;
+          case BREAK_POSITION_ALIGNED:
+            position = break_point_info->source_position();
+            break;
+        }
+
+        locations->set(count++, position);
+      }
+    }
+  }
+  return locations;
+}
+
+
+// Handle stepping into a function.
+void Debug::HandleStepIn(Handle<Object> function_obj, Handle<Object> holder,
+                         Address fp, bool is_constructor) {
+  // Flood getter/setter if we either step in or step to another frame.
+  bool step_frame = thread_local_.last_step_action_ == StepFrame;
+  if (!StepInActive() && !step_frame) return;
+  if (!function_obj->IsJSFunction()) return;
+  Handle<JSFunction> function = Handle<JSFunction>::cast(function_obj);
+  Isolate* isolate = function->GetIsolate();
+  // If the frame pointer is not supplied by the caller find it.
+  if (fp == 0) {
+    StackFrameIterator it(isolate);
+    it.Advance();
+    // For constructor functions skip another frame.
+    if (is_constructor) {
+      DCHECK(it.frame()->is_construct());
+      it.Advance();
+    }
+    fp = it.frame()->fp();
+  }
+
+  // Flood the function with one-shot break points if it is called from where
+  // step into was requested, or when stepping into a new frame.
+  if (fp == thread_local_.step_into_fp_ || step_frame) {
+    FloodWithOneShotGeneric(function, holder);
+  }
+}
+
+
+void Debug::ClearStepping() {
+  // Clear the various stepping setup.
+  ClearOneShot();
+  ClearStepIn();
+  ClearStepOut();
+  ClearStepNext();
+
+  // Clear multiple step counter.
+  thread_local_.step_count_ = 0;
+}
+
+
+// Clears all the one-shot break points that are currently set. Normally this
+// function is called each time a break point is hit as one shot break points
+// are used to support stepping.
+void Debug::ClearOneShot() {
+  // The current implementation just runs through all the breakpoints. When the
+  // last break point for a function is removed that function is automatically
+  // removed from the list.
+
+  DebugInfoListNode* node = debug_info_list_;
+  while (node != NULL) {
+    BreakLocationIterator it(node->debug_info(), ALL_BREAK_LOCATIONS);
+    while (!it.Done()) {
+      it.ClearOneShot();
+      it.Next();
+    }
+    node = node->next();
+  }
+}
+
+
+void Debug::ActivateStepIn(StackFrame* frame) {
+  DCHECK(!StepOutActive());
+  thread_local_.step_into_fp_ = frame->UnpaddedFP();
+}
+
+
+void Debug::ClearStepIn() {
+  thread_local_.step_into_fp_ = 0;
+}
+
+
+void Debug::ActivateStepOut(StackFrame* frame) {
+  DCHECK(!StepInActive());
+  thread_local_.step_out_fp_ = frame->UnpaddedFP();
+}
+
+
+void Debug::ClearStepOut() {
+  thread_local_.step_out_fp_ = 0;
+}
+
+
+void Debug::ClearStepNext() {
+  thread_local_.last_step_action_ = StepNone;
+  thread_local_.last_statement_position_ = RelocInfo::kNoPosition;
+  thread_local_.last_fp_ = 0;
+}
+
+
+static void CollectActiveFunctionsFromThread(
+    Isolate* isolate,
+    ThreadLocalTop* top,
+    List<Handle<JSFunction> >* active_functions,
+    Object* active_code_marker) {
+  // Find all non-optimized code functions with activation frames
+  // on the stack. This includes functions which have optimized
+  // activations (including inlined functions) on the stack as the
+  // non-optimized code is needed for the lazy deoptimization.
+  for (JavaScriptFrameIterator it(isolate, top); !it.done(); it.Advance()) {
+    JavaScriptFrame* frame = it.frame();
+    if (frame->is_optimized()) {
+      List<JSFunction*> functions(FLAG_max_inlining_levels + 1);
+      frame->GetFunctions(&functions);
+      for (int i = 0; i < functions.length(); i++) {
+        JSFunction* function = functions[i];
+        active_functions->Add(Handle<JSFunction>(function));
+        function->shared()->code()->set_gc_metadata(active_code_marker);
+      }
+    } else if (frame->function()->IsJSFunction()) {
+      JSFunction* function = frame->function();
+      DCHECK(frame->LookupCode()->kind() == Code::FUNCTION);
+      active_functions->Add(Handle<JSFunction>(function));
+      function->shared()->code()->set_gc_metadata(active_code_marker);
+    }
+  }
+}
+
+
+// Figure out how many bytes of "pc_offset" correspond to actual code by
+// subtracting off the bytes that correspond to constant/veneer pools.  See
+// Assembler::CheckConstPool() and Assembler::CheckVeneerPool(). Note that this
+// is only useful for architectures using constant pools or veneer pools.
+static int ComputeCodeOffsetFromPcOffset(Code *code, int pc_offset) {
+  DCHECK_EQ(code->kind(), Code::FUNCTION);
+  DCHECK(!code->has_debug_break_slots());
+  DCHECK_LE(0, pc_offset);
+  DCHECK_LT(pc_offset, code->instruction_end() - code->instruction_start());
+
+  int mask = RelocInfo::ModeMask(RelocInfo::CONST_POOL) |
+             RelocInfo::ModeMask(RelocInfo::VENEER_POOL);
+  byte *pc = code->instruction_start() + pc_offset;
+  int code_offset = pc_offset;
+  for (RelocIterator it(code, mask); !it.done(); it.next()) {
+    RelocInfo* info = it.rinfo();
+    if (info->pc() >= pc) break;
+    DCHECK(RelocInfo::IsConstPool(info->rmode()));
+    code_offset -= static_cast<int>(info->data());
+    DCHECK_LE(0, code_offset);
+  }
+
+  return code_offset;
+}
+
+
+// The inverse of ComputeCodeOffsetFromPcOffset.
+static int ComputePcOffsetFromCodeOffset(Code *code, int code_offset) {
+  DCHECK_EQ(code->kind(), Code::FUNCTION);
+
+  int mask = RelocInfo::ModeMask(RelocInfo::DEBUG_BREAK_SLOT) |
+             RelocInfo::ModeMask(RelocInfo::CONST_POOL) |
+             RelocInfo::ModeMask(RelocInfo::VENEER_POOL);
+  int reloc = 0;
+  for (RelocIterator it(code, mask); !it.done(); it.next()) {
+    RelocInfo* info = it.rinfo();
+    if (info->pc() - code->instruction_start() - reloc >= code_offset) break;
+    if (RelocInfo::IsDebugBreakSlot(info->rmode())) {
+      reloc += Assembler::kDebugBreakSlotLength;
+    } else {
+      DCHECK(RelocInfo::IsConstPool(info->rmode()));
+      reloc += static_cast<int>(info->data());
+    }
+  }
+
+  int pc_offset = code_offset + reloc;
+
+  DCHECK_LT(code->instruction_start() + pc_offset, code->instruction_end());
+
+  return pc_offset;
+}
+
+
+static void RedirectActivationsToRecompiledCodeOnThread(
+    Isolate* isolate,
+    ThreadLocalTop* top) {
+  for (JavaScriptFrameIterator it(isolate, top); !it.done(); it.Advance()) {
+    JavaScriptFrame* frame = it.frame();
+
+    if (frame->is_optimized() || !frame->function()->IsJSFunction()) continue;
+
+    JSFunction* function = frame->function();
+
+    DCHECK(frame->LookupCode()->kind() == Code::FUNCTION);
+
+    Handle<Code> frame_code(frame->LookupCode());
+    if (frame_code->has_debug_break_slots()) continue;
+
+    Handle<Code> new_code(function->shared()->code());
+    if (new_code->kind() != Code::FUNCTION ||
+        !new_code->has_debug_break_slots()) {
+      continue;
+    }
+
+    int old_pc_offset =
+        static_cast<int>(frame->pc() - frame_code->instruction_start());
+    int code_offset = ComputeCodeOffsetFromPcOffset(*frame_code, old_pc_offset);
+    int new_pc_offset = ComputePcOffsetFromCodeOffset(*new_code, code_offset);
+
+    // Compute the equivalent pc in the new code.
+    byte* new_pc = new_code->instruction_start() + new_pc_offset;
+
+    if (FLAG_trace_deopt) {
+      PrintF("Replacing code %08" V8PRIxPTR " - %08" V8PRIxPTR " (%d) "
+             "with %08" V8PRIxPTR " - %08" V8PRIxPTR " (%d) "
+             "for debugging, "
+             "changing pc from %08" V8PRIxPTR " to %08" V8PRIxPTR "\n",
+             reinterpret_cast<intptr_t>(
+                 frame_code->instruction_start()),
+             reinterpret_cast<intptr_t>(
+                 frame_code->instruction_start()) +
+             frame_code->instruction_size(),
+             frame_code->instruction_size(),
+             reinterpret_cast<intptr_t>(new_code->instruction_start()),
+             reinterpret_cast<intptr_t>(new_code->instruction_start()) +
+             new_code->instruction_size(),
+             new_code->instruction_size(),
+             reinterpret_cast<intptr_t>(frame->pc()),
+             reinterpret_cast<intptr_t>(new_pc));
+    }
+
+    if (FLAG_enable_ool_constant_pool) {
+      // Update constant pool pointer for new code.
+      frame->set_constant_pool(new_code->constant_pool());
+    }
+
+    // Patch the return address to return into the code with
+    // debug break slots.
+    frame->set_pc(new_pc);
+  }
+}
+
+
+class ActiveFunctionsCollector : public ThreadVisitor {
+ public:
+  explicit ActiveFunctionsCollector(List<Handle<JSFunction> >* active_functions,
+                                    Object* active_code_marker)
+      : active_functions_(active_functions),
+        active_code_marker_(active_code_marker) { }
+
+  void VisitThread(Isolate* isolate, ThreadLocalTop* top) {
+    CollectActiveFunctionsFromThread(isolate,
+                                     top,
+                                     active_functions_,
+                                     active_code_marker_);
+  }
+
+ private:
+  List<Handle<JSFunction> >* active_functions_;
+  Object* active_code_marker_;
+};
+
+
+class ActiveFunctionsRedirector : public ThreadVisitor {
+ public:
+  void VisitThread(Isolate* isolate, ThreadLocalTop* top) {
+    RedirectActivationsToRecompiledCodeOnThread(isolate, top);
+  }
+};
+
+
+static void EnsureFunctionHasDebugBreakSlots(Handle<JSFunction> function) {
+  if (function->code()->kind() == Code::FUNCTION &&
+      function->code()->has_debug_break_slots()) {
+    // Nothing to do. Function code already had debug break slots.
+    return;
+  }
+  // Make sure that the shared full code is compiled with debug
+  // break slots.
+  if (!function->shared()->code()->has_debug_break_slots()) {
+    MaybeHandle<Code> code = Compiler::GetDebugCode(function);
+    // Recompilation can fail.  In that case leave the code as it was.
+    if (!code.is_null()) function->ReplaceCode(*code.ToHandleChecked());
+  } else {
+    // Simply use shared code if it has debug break slots.
+    function->ReplaceCode(function->shared()->code());
+  }
+}
+
+
+static void RecompileAndRelocateSuspendedGenerators(
+    const List<Handle<JSGeneratorObject> > &generators) {
+  for (int i = 0; i < generators.length(); i++) {
+    Handle<JSFunction> fun(generators[i]->function());
+
+    EnsureFunctionHasDebugBreakSlots(fun);
+
+    int code_offset = generators[i]->continuation();
+    int pc_offset = ComputePcOffsetFromCodeOffset(fun->code(), code_offset);
+    generators[i]->set_continuation(pc_offset);
+  }
+}
+
+
+static bool SkipSharedFunctionInfo(SharedFunctionInfo* shared,
+                                   Object* active_code_marker) {
+  if (!shared->allows_lazy_compilation()) return true;
+  if (!shared->script()->IsScript()) return true;
+  Object* script = shared->script();
+  if (!script->IsScript()) return true;
+  if (Script::cast(script)->type()->value() == Script::TYPE_NATIVE) return true;
+  Code* shared_code = shared->code();
+  return shared_code->gc_metadata() == active_code_marker;
+}
+
+
+static inline bool HasDebugBreakSlots(Code* code) {
+  return code->kind() == Code::FUNCTION && code->has_debug_break_slots();
+}
+
+
+void Debug::PrepareForBreakPoints() {
+  // If preparing for the first break point make sure to deoptimize all
+  // functions as debugging does not work with optimized code.
+  if (!has_break_points_) {
+    if (isolate_->concurrent_recompilation_enabled()) {
+      isolate_->optimizing_compiler_thread()->Flush();
+    }
+
+    Deoptimizer::DeoptimizeAll(isolate_);
+
+    Handle<Code> lazy_compile = isolate_->builtins()->CompileLazy();
+
+    // There will be at least one break point when we are done.
+    has_break_points_ = true;
+
+    // Keep the list of activated functions in a handlified list as it
+    // is used both in GC and non-GC code.
+    List<Handle<JSFunction> > active_functions(100);
+
+    // A list of all suspended generators.
+    List<Handle<JSGeneratorObject> > suspended_generators;
+
+    // A list of all generator functions.  We need to recompile all functions,
+    // but we don't know until after visiting the whole heap which generator
+    // functions have suspended activations and which do not.  As in the case of
+    // functions with activations on the stack, we need to be careful with
+    // generator functions with suspended activations because although they
+    // should be recompiled, recompilation can fail, and we need to avoid
+    // leaving the heap in an inconsistent state.
+    //
+    // We could perhaps avoid this list and instead re-use the GC metadata
+    // links.
+    List<Handle<JSFunction> > generator_functions;
+
+    {
+      // We are going to iterate heap to find all functions without
+      // debug break slots.
+      Heap* heap = isolate_->heap();
+      heap->CollectAllGarbage(Heap::kMakeHeapIterableMask,
+                              "preparing for breakpoints");
+      HeapIterator iterator(heap);
+
+      // Ensure no GC in this scope as we are going to use gc_metadata
+      // field in the Code object to mark active functions.
+      DisallowHeapAllocation no_allocation;
+
+      Object* active_code_marker = heap->the_hole_value();
+
+      CollectActiveFunctionsFromThread(isolate_,
+                                       isolate_->thread_local_top(),
+                                       &active_functions,
+                                       active_code_marker);
+      ActiveFunctionsCollector active_functions_collector(&active_functions,
+                                                          active_code_marker);
+      isolate_->thread_manager()->IterateArchivedThreads(
+          &active_functions_collector);
+
+      // Scan the heap for all non-optimized functions which have no
+      // debug break slots and are not active or inlined into an active
+      // function and mark them for lazy compilation.
+      HeapObject* obj = NULL;
+      while (((obj = iterator.next()) != NULL)) {
+        if (obj->IsJSFunction()) {
+          JSFunction* function = JSFunction::cast(obj);
+          SharedFunctionInfo* shared = function->shared();
+          if (SkipSharedFunctionInfo(shared, active_code_marker)) continue;
+          if (shared->is_generator()) {
+            generator_functions.Add(Handle<JSFunction>(function, isolate_));
+            continue;
+          }
+          if (HasDebugBreakSlots(function->code())) continue;
+          Code* fallback = HasDebugBreakSlots(shared->code()) ? shared->code()
+                                                              : *lazy_compile;
+          Code::Kind kind = function->code()->kind();
+          if (kind == Code::FUNCTION ||
+              (kind == Code::BUILTIN &&  // Abort in-flight compilation.
+               (function->IsInOptimizationQueue() ||
+                function->IsMarkedForOptimization() ||
+                function->IsMarkedForConcurrentOptimization()))) {
+            function->ReplaceCode(fallback);
+          }
+          if (kind == Code::OPTIMIZED_FUNCTION) {
+            // Optimized code can only get here if DeoptimizeAll did not
+            // deoptimize turbo fan code.
+            DCHECK(!FLAG_turbo_deoptimization);
+            DCHECK(function->code()->is_turbofanned());
+            function->ReplaceCode(fallback);
+          }
+        } else if (obj->IsJSGeneratorObject()) {
+          JSGeneratorObject* gen = JSGeneratorObject::cast(obj);
+          if (!gen->is_suspended()) continue;
+
+          JSFunction* fun = gen->function();
+          DCHECK_EQ(fun->code()->kind(), Code::FUNCTION);
+          if (fun->code()->has_debug_break_slots()) continue;
+
+          int pc_offset = gen->continuation();
+          DCHECK_LT(0, pc_offset);
+
+          int code_offset =
+              ComputeCodeOffsetFromPcOffset(fun->code(), pc_offset);
+
+          // This will be fixed after we recompile the functions.
+          gen->set_continuation(code_offset);
+
+          suspended_generators.Add(Handle<JSGeneratorObject>(gen, isolate_));
+        } else if (obj->IsSharedFunctionInfo()) {
+          SharedFunctionInfo* shared = SharedFunctionInfo::cast(obj);
+          if (SkipSharedFunctionInfo(shared, active_code_marker)) continue;
+          if (shared->is_generator()) continue;
+          if (HasDebugBreakSlots(shared->code())) continue;
+          shared->ReplaceCode(*lazy_compile);
+        }
+      }
+
+      // Clear gc_metadata field.
+      for (int i = 0; i < active_functions.length(); i++) {
+        Handle<JSFunction> function = active_functions[i];
+        function->shared()->code()->set_gc_metadata(Smi::FromInt(0));
+      }
+    }
+
+    // Recompile generator functions that have suspended activations, and
+    // relocate those activations.
+    RecompileAndRelocateSuspendedGenerators(suspended_generators);
+
+    // Mark generator functions that didn't have suspended activations for lazy
+    // recompilation.  Note that this set does not include any active functions.
+    for (int i = 0; i < generator_functions.length(); i++) {
+      Handle<JSFunction> &function = generator_functions[i];
+      if (function->code()->kind() != Code::FUNCTION) continue;
+      if (function->code()->has_debug_break_slots()) continue;
+      function->ReplaceCode(*lazy_compile);
+      function->shared()->ReplaceCode(*lazy_compile);
+    }
+
+    // Now recompile all functions with activation frames and and
+    // patch the return address to run in the new compiled code.  It could be
+    // that some active functions were recompiled already by the suspended
+    // generator recompilation pass above; a generator with suspended
+    // activations could also have active activations.  That's fine.
+    for (int i = 0; i < active_functions.length(); i++) {
+      Handle<JSFunction> function = active_functions[i];
+      Handle<SharedFunctionInfo> shared(function->shared());
+
+      // If recompilation is not possible just skip it.
+      if (shared->is_toplevel()) continue;
+      if (!shared->allows_lazy_compilation()) continue;
+      if (shared->code()->kind() == Code::BUILTIN) continue;
+
+      EnsureFunctionHasDebugBreakSlots(function);
+    }
+
+    RedirectActivationsToRecompiledCodeOnThread(isolate_,
+                                                isolate_->thread_local_top());
+
+    ActiveFunctionsRedirector active_functions_redirector;
+    isolate_->thread_manager()->IterateArchivedThreads(
+          &active_functions_redirector);
+  }
+}
+
+
+Object* Debug::FindSharedFunctionInfoInScript(Handle<Script> script,
+                                              int position) {
+  // Iterate the heap looking for SharedFunctionInfo generated from the
+  // script. The inner most SharedFunctionInfo containing the source position
+  // for the requested break point is found.
+  // NOTE: This might require several heap iterations. If the SharedFunctionInfo
+  // which is found is not compiled it is compiled and the heap is iterated
+  // again as the compilation might create inner functions from the newly
+  // compiled function and the actual requested break point might be in one of
+  // these functions.
+  // NOTE: The below fix-point iteration depends on all functions that cannot be
+  // compiled lazily without a context to not be compiled at all. Compilation
+  // will be triggered at points where we do not need a context.
+  bool done = false;
+  // The current candidate for the source position:
+  int target_start_position = RelocInfo::kNoPosition;
+  Handle<JSFunction> target_function;
+  Handle<SharedFunctionInfo> target;
+  Heap* heap = isolate_->heap();
+  while (!done) {
+    { // Extra scope for iterator.
+      // If lazy compilation is off, we won't have duplicate shared function
+      // infos that need to be filtered.
+      HeapIterator iterator(heap, FLAG_lazy ? HeapIterator::kNoFiltering
+                                            : HeapIterator::kFilterUnreachable);
+      for (HeapObject* obj = iterator.next();
+           obj != NULL; obj = iterator.next()) {
+        bool found_next_candidate = false;
+        Handle<JSFunction> function;
+        Handle<SharedFunctionInfo> shared;
+        if (obj->IsJSFunction()) {
+          function = Handle<JSFunction>(JSFunction::cast(obj));
+          shared = Handle<SharedFunctionInfo>(function->shared());
+          DCHECK(shared->allows_lazy_compilation() || shared->is_compiled());
+          found_next_candidate = true;
+        } else if (obj->IsSharedFunctionInfo()) {
+          shared = Handle<SharedFunctionInfo>(SharedFunctionInfo::cast(obj));
+          // Skip functions that we cannot compile lazily without a context,
+          // which is not available here, because there is no closure.
+          found_next_candidate = shared->is_compiled() ||
+              shared->allows_lazy_compilation_without_context();
+        }
+        if (!found_next_candidate) continue;
+        if (shared->script() == *script) {
+          // If the SharedFunctionInfo found has the requested script data and
+          // contains the source position it is a candidate.
+          int start_position = shared->function_token_position();
+          if (start_position == RelocInfo::kNoPosition) {
+            start_position = shared->start_position();
+          }
+          if (start_position <= position &&
+              position <= shared->end_position()) {
+            // If there is no candidate or this function is within the current
+            // candidate this is the new candidate.
+            if (target.is_null()) {
+              target_start_position = start_position;
+              target_function = function;
+              target = shared;
+            } else {
+              if (target_start_position == start_position &&
+                  shared->end_position() == target->end_position()) {
+                // If a top-level function contains only one function
+                // declaration the source for the top-level and the function
+                // is the same. In that case prefer the non top-level function.
+                if (!shared->is_toplevel()) {
+                  target_start_position = start_position;
+                  target_function = function;
+                  target = shared;
+                }
+              } else if (target_start_position <= start_position &&
+                         shared->end_position() <= target->end_position()) {
+                // This containment check includes equality as a function
+                // inside a top-level function can share either start or end
+                // position with the top-level function.
+                target_start_position = start_position;
+                target_function = function;
+                target = shared;
+              }
+            }
+          }
+        }
+      }  // End for loop.
+    }  // End no-allocation scope.
+
+    if (target.is_null()) return heap->undefined_value();
+
+    // There will be at least one break point when we are done.
+    has_break_points_ = true;
+
+    // If the candidate found is compiled we are done.
+    done = target->is_compiled();
+    if (!done) {
+      // If the candidate is not compiled, compile it to reveal any inner
+      // functions which might contain the requested source position. This
+      // will compile all inner functions that cannot be compiled without a
+      // context, because Compiler::BuildFunctionInfo checks whether the
+      // debugger is active.
+      MaybeHandle<Code> maybe_result = target_function.is_null()
+          ? Compiler::GetUnoptimizedCode(target)
+          : Compiler::GetUnoptimizedCode(target_function);
+      if (maybe_result.is_null()) return isolate_->heap()->undefined_value();
+    }
+  }  // End while loop.
+
+  return *target;
+}
+
+
+// Ensures the debug information is present for shared.
+bool Debug::EnsureDebugInfo(Handle<SharedFunctionInfo> shared,
+                            Handle<JSFunction> function) {
+  Isolate* isolate = shared->GetIsolate();
+
+  // Return if we already have the debug info for shared.
+  if (HasDebugInfo(shared)) {
+    DCHECK(shared->is_compiled());
+    return true;
+  }
+
+  // There will be at least one break point when we are done.
+  has_break_points_ = true;
+
+  // Ensure function is compiled. Return false if this failed.
+  if (!function.is_null() &&
+      !Compiler::EnsureCompiled(function, CLEAR_EXCEPTION)) {
+    return false;
+  }
+
+  // Create the debug info object.
+  Handle<DebugInfo> debug_info = isolate->factory()->NewDebugInfo(shared);
+
+  // Add debug info to the list.
+  DebugInfoListNode* node = new DebugInfoListNode(*debug_info);
+  node->set_next(debug_info_list_);
+  debug_info_list_ = node;
+
+  return true;
+}
+
+
+void Debug::RemoveDebugInfo(DebugInfoListNode* prev, DebugInfoListNode* node) {
+  // Unlink from list. If prev is NULL we are looking at the first element.
+  if (prev == NULL) {
+    debug_info_list_ = node->next();
+  } else {
+    prev->set_next(node->next());
+  }
+  delete node;
+
+  // If there are no more debug info objects there are not more break
+  // points.
+  has_break_points_ = debug_info_list_ != NULL;
+}
+
+
+void Debug::RemoveDebugInfo(DebugInfo** debug_info) {
+  DCHECK(debug_info_list_ != NULL);
+  // Run through the debug info objects to find this one and remove it.
+  DebugInfoListNode* prev = NULL;
+  DebugInfoListNode* current = debug_info_list_;
+  while (current != NULL) {
+    if (current->debug_info().location() == debug_info) {
+      RemoveDebugInfo(prev, current);
+      return;
+    }
+    // Move to next in list.
+    prev = current;
+    current = current->next();
+  }
+  UNREACHABLE();
+}
+
+
+void Debug::RemoveDebugInfo(DebugInfoListNode* node) {
+  DCHECK(debug_info_list_ != NULL);
+  // Run through the debug info objects to find this one and remove it.
+  DebugInfoListNode* prev = NULL;
+  DebugInfoListNode* current = debug_info_list_;
+  while (current != NULL) {
+    if (current == node) {
+      RemoveDebugInfo(prev, node);
+      return;
+    }
+    // Move to next in list.
+    prev = current;
+    current = current->next();
+  }
+  UNREACHABLE();
+}
+
+
+void Debug::RemoveDebugInfoAndClearFromShared(Handle<DebugInfo> debug_info) {
+  HandleScope scope(isolate_);
+  Handle<SharedFunctionInfo> shared(debug_info->shared());
+
+  RemoveDebugInfo(debug_info.location());
+
+  shared->set_debug_info(isolate_->heap()->undefined_value());
+}
+
+
+void Debug::SetAfterBreakTarget(JavaScriptFrame* frame) {
+  after_break_target_ = NULL;
+
+  if (LiveEdit::SetAfterBreakTarget(this)) return;  // LiveEdit did the job.
+
+  HandleScope scope(isolate_);
+  PrepareForBreakPoints();
+
+  // Get the executing function in which the debug break occurred.
+  Handle<JSFunction> function(JSFunction::cast(frame->function()));
+  Handle<SharedFunctionInfo> shared(function->shared());
+  if (!EnsureDebugInfo(shared, function)) {
+    // Return if we failed to retrieve the debug info.
+    return;
+  }
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+  Handle<Code> code(debug_info->code());
+  Handle<Code> original_code(debug_info->original_code());
+#ifdef DEBUG
+  // Get the code which is actually executing.
+  Handle<Code> frame_code(frame->LookupCode());
+  DCHECK(frame_code.is_identical_to(code));
+#endif
+
+  // Find the call address in the running code. This address holds the call to
+  // either a DebugBreakXXX or to the debug break return entry code if the
+  // break point is still active after processing the break point.
+  Address addr = Assembler::break_address_from_return_address(frame->pc());
+
+  // Check if the location is at JS exit or debug break slot.
+  bool at_js_return = false;
+  bool break_at_js_return_active = false;
+  bool at_debug_break_slot = false;
+  RelocIterator it(debug_info->code());
+  while (!it.done() && !at_js_return && !at_debug_break_slot) {
+    if (RelocInfo::IsJSReturn(it.rinfo()->rmode())) {
+      at_js_return = (it.rinfo()->pc() ==
+          addr - Assembler::kPatchReturnSequenceAddressOffset);
+      break_at_js_return_active = it.rinfo()->IsPatchedReturnSequence();
+    }
+    if (RelocInfo::IsDebugBreakSlot(it.rinfo()->rmode())) {
+      at_debug_break_slot = (it.rinfo()->pc() ==
+          addr - Assembler::kPatchDebugBreakSlotAddressOffset);
+    }
+    it.next();
+  }
+
+  // Handle the jump to continue execution after break point depending on the
+  // break location.
+  if (at_js_return) {
+    // If the break point as return is still active jump to the corresponding
+    // place in the original code. If not the break point was removed during
+    // break point processing.
+    if (break_at_js_return_active) {
+      addr += original_code->instruction_start() - code->instruction_start();
+    }
+
+    // Move back to where the call instruction sequence started.
+    after_break_target_ = addr - Assembler::kPatchReturnSequenceAddressOffset;
+  } else if (at_debug_break_slot) {
+    // Address of where the debug break slot starts.
+    addr = addr - Assembler::kPatchDebugBreakSlotAddressOffset;
+
+    // Continue just after the slot.
+    after_break_target_ = addr + Assembler::kDebugBreakSlotLength;
+  } else {
+    addr = Assembler::target_address_from_return_address(frame->pc());
+    if (IsDebugBreak(Assembler::target_address_at(addr, *code))) {
+      // We now know that there is still a debug break call at the target
+      // address, so the break point is still there and the original code will
+      // hold the address to jump to in order to complete the call which is
+      // replaced by a call to DebugBreakXXX.
+
+      // Find the corresponding address in the original code.
+      addr += original_code->instruction_start() - code->instruction_start();
+
+      // Install jump to the call address in the original code. This will be the
+      // call which was overwritten by the call to DebugBreakXXX.
+      after_break_target_ = Assembler::target_address_at(addr, *original_code);
+    } else {
+      // There is no longer a break point present. Don't try to look in the
+      // original code as the running code will have the right address. This
+      // takes care of the case where the last break point is removed from the
+      // function and therefore no "original code" is available.
+      after_break_target_ = Assembler::target_address_at(addr, *code);
+    }
+  }
+}
+
+
+bool Debug::IsBreakAtReturn(JavaScriptFrame* frame) {
+  HandleScope scope(isolate_);
+
+  // If there are no break points this cannot be break at return, as
+  // the debugger statement and stack guard debug break cannot be at
+  // return.
+  if (!has_break_points_) {
+    return false;
+  }
+
+  PrepareForBreakPoints();
+
+  // Get the executing function in which the debug break occurred.
+  Handle<JSFunction> function(JSFunction::cast(frame->function()));
+  Handle<SharedFunctionInfo> shared(function->shared());
+  if (!EnsureDebugInfo(shared, function)) {
+    // Return if we failed to retrieve the debug info.
+    return false;
+  }
+  Handle<DebugInfo> debug_info = GetDebugInfo(shared);
+  Handle<Code> code(debug_info->code());
+#ifdef DEBUG
+  // Get the code which is actually executing.
+  Handle<Code> frame_code(frame->LookupCode());
+  DCHECK(frame_code.is_identical_to(code));
+#endif
+
+  // Find the call address in the running code.
+  Address addr = Assembler::break_address_from_return_address(frame->pc());
+
+  // Check if the location is at JS return.
+  RelocIterator it(debug_info->code());
+  while (!it.done()) {
+    if (RelocInfo::IsJSReturn(it.rinfo()->rmode())) {
+      return (it.rinfo()->pc() ==
+          addr - Assembler::kPatchReturnSequenceAddressOffset);
+    }
+    it.next();
+  }
+  return false;
+}
+
+
+void Debug::FramesHaveBeenDropped(StackFrame::Id new_break_frame_id,
+                                  LiveEdit::FrameDropMode mode,
+                                  Object** restarter_frame_function_pointer) {
+  if (mode != LiveEdit::CURRENTLY_SET_MODE) {
+    thread_local_.frame_drop_mode_ = mode;
+  }
+  thread_local_.break_frame_id_ = new_break_frame_id;
+  thread_local_.restarter_frame_function_pointer_ =
+      restarter_frame_function_pointer;
+}
+
+
+bool Debug::IsDebugGlobal(GlobalObject* global) {
+  return is_loaded() && global == debug_context()->global_object();
+}
+
+
+void Debug::ClearMirrorCache() {
+  PostponeInterruptsScope postpone(isolate_);
+  HandleScope scope(isolate_);
+  AssertDebugContext();
+  Factory* factory = isolate_->factory();
+  Handle<GlobalObject> global(isolate_->global_object());
+  JSObject::SetProperty(global,
+                        factory->NewStringFromAsciiChecked("next_handle_"),
+                        handle(Smi::FromInt(0), isolate_), SLOPPY).Check();
+  JSObject::SetProperty(global,
+                        factory->NewStringFromAsciiChecked("mirror_cache_"),
+                        factory->NewJSArray(0, FAST_ELEMENTS), SLOPPY).Check();
+}
+
+
+Handle<FixedArray> Debug::GetLoadedScripts() {
+  // Create and fill the script cache when the loaded scripts is requested for
+  // the first time.
+  if (script_cache_ == NULL) script_cache_ = new ScriptCache(isolate_);
+
+  // Perform GC to get unreferenced scripts evicted from the cache before
+  // returning the content.
+  isolate_->heap()->CollectAllGarbage(Heap::kNoGCFlags,
+                                      "Debug::GetLoadedScripts");
+
+  // Get the scripts from the cache.
+  return script_cache_->GetScripts();
+}
+
+
+void Debug::RecordEvalCaller(Handle<Script> script) {
+  script->set_compilation_type(Script::COMPILATION_TYPE_EVAL);
+  // For eval scripts add information on the function from which eval was
+  // called.
+  StackTraceFrameIterator it(script->GetIsolate());
+  if (!it.done()) {
+    script->set_eval_from_shared(it.frame()->function()->shared());
+    Code* code = it.frame()->LookupCode();
+    int offset = static_cast<int>(
+        it.frame()->pc() - code->instruction_start());
+    script->set_eval_from_instructions_offset(Smi::FromInt(offset));
+  }
+}
+
+
+MaybeHandle<Object> Debug::MakeJSObject(const char* constructor_name,
+                                        int argc,
+                                        Handle<Object> argv[]) {
+  AssertDebugContext();
+  // Create the execution state object.
+  Handle<GlobalObject> global(isolate_->global_object());
+  Handle<Object> constructor = Object::GetProperty(
+      isolate_, global, constructor_name).ToHandleChecked();
+  DCHECK(constructor->IsJSFunction());
+  if (!constructor->IsJSFunction()) return MaybeHandle<Object>();
+  // We do not handle interrupts here.  In particular, termination interrupts.
+  PostponeInterruptsScope no_interrupts(isolate_);
+  return Execution::TryCall(Handle<JSFunction>::cast(constructor),
+                            handle(debug_context()->global_proxy()),
+                            argc,
+                            argv);
+}
+
+
+MaybeHandle<Object> Debug::MakeExecutionState() {
+  // Create the execution state object.
+  Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()) };
+  return MakeJSObject("MakeExecutionState", arraysize(argv), argv);
+}
+
+
+MaybeHandle<Object> Debug::MakeBreakEvent(Handle<Object> break_points_hit) {
+  // Create the new break event object.
+  Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()),
+                            break_points_hit };
+  return MakeJSObject("MakeBreakEvent", arraysize(argv), argv);
+}
+
+
+MaybeHandle<Object> Debug::MakeExceptionEvent(Handle<Object> exception,
+                                              bool uncaught,
+                                              Handle<Object> promise) {
+  // Create the new exception event object.
+  Handle<Object> argv[] = { isolate_->factory()->NewNumberFromInt(break_id()),
+                            exception,
+                            isolate_->factory()->ToBoolean(uncaught),
+                            promise };
+  return MakeJSObject("MakeExceptionEvent", arraysize(argv), argv);
+}
+
+
+MaybeHandle<Object> Debug::MakeCompileEvent(Handle<Script> script,
+                                            v8::DebugEvent type) {
+  // Create the compile event object.
+  Handle<Object> script_wrapper = Script::GetWrapper(script);
+  Handle<Object> argv[] = { script_wrapper,
+                            isolate_->factory()->NewNumberFromInt(type) };
+  return MakeJSObject("MakeCompileEvent", arraysize(argv), argv);
+}
+
+
+MaybeHandle<Object> Debug::MakePromiseEvent(Handle<JSObject> event_data) {
+  // Create the promise event object.
+  Handle<Object> argv[] = { event_data };
+  return MakeJSObject("MakePromiseEvent", arraysize(argv), argv);
+}
+
+
+MaybeHandle<Object> Debug::MakeAsyncTaskEvent(Handle<JSObject> task_event) {
+  // Create the async task event object.
+  Handle<Object> argv[] = { task_event };
+  return MakeJSObject("MakeAsyncTaskEvent", arraysize(argv), argv);
+}
+
+
+void Debug::OnThrow(Handle<Object> exception, bool uncaught) {
+  if (in_debug_scope() || ignore_events()) return;
+  // Temporarily clear any scheduled_exception to allow evaluating
+  // JavaScript from the debug event handler.
+  HandleScope scope(isolate_);
+  Handle<Object> scheduled_exception;
+  if (isolate_->has_scheduled_exception()) {
+    scheduled_exception = handle(isolate_->scheduled_exception(), isolate_);
+    isolate_->clear_scheduled_exception();
+  }
+  OnException(exception, uncaught, isolate_->GetPromiseOnStackOnThrow());
+  if (!scheduled_exception.is_null()) {
+    isolate_->thread_local_top()->scheduled_exception_ = *scheduled_exception;
+  }
+}
+
+
+void Debug::OnPromiseReject(Handle<JSObject> promise, Handle<Object> value) {
+  if (in_debug_scope() || ignore_events()) return;
+  HandleScope scope(isolate_);
+  // Check whether the promise has been marked as having triggered a message.
+  Handle<Symbol> key = isolate_->factory()->promise_debug_marker_symbol();
+  if (JSObject::GetDataProperty(promise, key)->IsUndefined()) {
+    OnException(value, false, promise);
+  }
+}
+
+
+MaybeHandle<Object> Debug::PromiseHasUserDefinedRejectHandler(
+    Handle<JSObject> promise) {
+  Handle<JSFunction> fun = Handle<JSFunction>::cast(
+      JSObject::GetDataProperty(isolate_->js_builtins_object(),
+                                isolate_->factory()->NewStringFromStaticChars(
+                                    "PromiseHasUserDefinedRejectHandler")));
+  return Execution::Call(isolate_, fun, promise, 0, NULL);
+}
+
+
+void Debug::OnException(Handle<Object> exception, bool uncaught,
+                        Handle<Object> promise) {
+  if (!uncaught && promise->IsJSObject()) {
+    Handle<JSObject> jspromise = Handle<JSObject>::cast(promise);
+    // Mark the promise as already having triggered a message.
+    Handle<Symbol> key = isolate_->factory()->promise_debug_marker_symbol();
+    JSObject::SetProperty(jspromise, key, key, STRICT).Assert();
+    // Check whether the promise reject is considered an uncaught exception.
+    Handle<Object> has_reject_handler;
+    ASSIGN_RETURN_ON_EXCEPTION_VALUE(
+        isolate_, has_reject_handler,
+        PromiseHasUserDefinedRejectHandler(jspromise), /* void */);
+    uncaught = has_reject_handler->IsFalse();
+  }
+  // Bail out if exception breaks are not active
+  if (uncaught) {
+    // Uncaught exceptions are reported by either flags.
+    if (!(break_on_uncaught_exception_ || break_on_exception_)) return;
+  } else {
+    // Caught exceptions are reported is activated.
+    if (!break_on_exception_) return;
+  }
+
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Clear all current stepping setup.
+  ClearStepping();
+
+  // Create the event data object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeExceptionEvent(
+          exception, uncaught, promise).ToHandle(&event_data)) {
+    return;
+  }
+
+  // Process debug event.
+  ProcessDebugEvent(v8::Exception, Handle<JSObject>::cast(event_data), false);
+  // Return to continue execution from where the exception was thrown.
+}
+
+
+void Debug::OnCompileError(Handle<Script> script) {
+  if (ignore_events()) return;
+
+  if (in_debug_scope()) {
+    ProcessCompileEventInDebugScope(v8::CompileError, script);
+    return;
+  }
+
+  HandleScope scope(isolate_);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Create the compile state object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeCompileEvent(script, v8::CompileError).ToHandle(&event_data)) return;
+
+  // Process debug event.
+  ProcessDebugEvent(v8::CompileError, Handle<JSObject>::cast(event_data), true);
+}
+
+
+void Debug::OnDebugBreak(Handle<Object> break_points_hit,
+                            bool auto_continue) {
+  // The caller provided for DebugScope.
+  AssertDebugContext();
+  // Bail out if there is no listener for this event
+  if (ignore_events()) return;
+
+  HandleScope scope(isolate_);
+  // Create the event data object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeBreakEvent(break_points_hit).ToHandle(&event_data)) return;
+
+  // Process debug event.
+  ProcessDebugEvent(v8::Break,
+                    Handle<JSObject>::cast(event_data),
+                    auto_continue);
+}
+
+
+void Debug::OnBeforeCompile(Handle<Script> script) {
+  if (in_debug_scope() || ignore_events()) return;
+
+  HandleScope scope(isolate_);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Create the event data object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeCompileEvent(script, v8::BeforeCompile).ToHandle(&event_data))
+    return;
+
+  // Process debug event.
+  ProcessDebugEvent(v8::BeforeCompile,
+                    Handle<JSObject>::cast(event_data),
+                    true);
+}
+
+
+// Handle debugger actions when a new script is compiled.
+void Debug::OnAfterCompile(Handle<Script> script) {
+  // Add the newly compiled script to the script cache.
+  if (script_cache_ != NULL) script_cache_->Add(script);
+
+  if (ignore_events()) return;
+
+  if (in_debug_scope()) {
+    ProcessCompileEventInDebugScope(v8::AfterCompile, script);
+    return;
+  }
+
+  HandleScope scope(isolate_);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // If debugging there might be script break points registered for this
+  // script. Make sure that these break points are set.
+
+  // Get the function UpdateScriptBreakPoints (defined in debug-debugger.js).
+  Handle<String> update_script_break_points_string =
+      isolate_->factory()->InternalizeOneByteString(
+          STATIC_CHAR_VECTOR("UpdateScriptBreakPoints"));
+  Handle<GlobalObject> debug_global(debug_context()->global_object());
+  Handle<Object> update_script_break_points =
+      Object::GetProperty(
+          debug_global, update_script_break_points_string).ToHandleChecked();
+  if (!update_script_break_points->IsJSFunction()) {
+    return;
+  }
+  DCHECK(update_script_break_points->IsJSFunction());
+
+  // Wrap the script object in a proper JS object before passing it
+  // to JavaScript.
+  Handle<Object> wrapper = Script::GetWrapper(script);
+
+  // Call UpdateScriptBreakPoints expect no exceptions.
+  Handle<Object> argv[] = { wrapper };
+  if (Execution::TryCall(Handle<JSFunction>::cast(update_script_break_points),
+                         isolate_->js_builtins_object(),
+                         arraysize(argv),
+                         argv).is_null()) {
+    return;
+  }
+
+  // Create the compile state object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeCompileEvent(script, v8::AfterCompile).ToHandle(&event_data)) return;
+
+  // Process debug event.
+  ProcessDebugEvent(v8::AfterCompile, Handle<JSObject>::cast(event_data), true);
+}
+
+
+void Debug::OnPromiseEvent(Handle<JSObject> data) {
+  if (in_debug_scope() || ignore_events()) return;
+
+  HandleScope scope(isolate_);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Create the script collected state object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakePromiseEvent(data).ToHandle(&event_data)) return;
+
+  // Process debug event.
+  ProcessDebugEvent(v8::PromiseEvent,
+                    Handle<JSObject>::cast(event_data),
+                    true);
+}
+
+
+void Debug::OnAsyncTaskEvent(Handle<JSObject> data) {
+  if (in_debug_scope() || ignore_events()) return;
+
+  HandleScope scope(isolate_);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Create the script collected state object.
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeAsyncTaskEvent(data).ToHandle(&event_data)) return;
+
+  // Process debug event.
+  ProcessDebugEvent(v8::AsyncTaskEvent,
+                    Handle<JSObject>::cast(event_data),
+                    true);
+}
+
+
+void Debug::ProcessDebugEvent(v8::DebugEvent event,
+                              Handle<JSObject> event_data,
+                              bool auto_continue) {
+  HandleScope scope(isolate_);
+
+  // Create the execution state.
+  Handle<Object> exec_state;
+  // Bail out and don't call debugger if exception.
+  if (!MakeExecutionState().ToHandle(&exec_state)) return;
+
+  // First notify the message handler if any.
+  if (message_handler_ != NULL) {
+    NotifyMessageHandler(event,
+                         Handle<JSObject>::cast(exec_state),
+                         event_data,
+                         auto_continue);
+  }
+  // Notify registered debug event listener. This can be either a C or
+  // a JavaScript function. Don't call event listener for v8::Break
+  // here, if it's only a debug command -- they will be processed later.
+  if ((event != v8::Break || !auto_continue) && !event_listener_.is_null()) {
+    CallEventCallback(event, exec_state, event_data, NULL);
+  }
+  // Process pending debug commands.
+  if (event == v8::Break) {
+    while (!event_command_queue_.IsEmpty()) {
+      CommandMessage command = event_command_queue_.Get();
+      if (!event_listener_.is_null()) {
+        CallEventCallback(v8::BreakForCommand,
+                          exec_state,
+                          event_data,
+                          command.client_data());
+      }
+      command.Dispose();
+    }
+  }
+}
+
+
+void Debug::CallEventCallback(v8::DebugEvent event,
+                              Handle<Object> exec_state,
+                              Handle<Object> event_data,
+                              v8::Debug::ClientData* client_data) {
+  bool previous = in_debug_event_listener_;
+  in_debug_event_listener_ = true;
+  if (event_listener_->IsForeign()) {
+    // Invoke the C debug event listener.
+    v8::Debug::EventCallback callback =
+        FUNCTION_CAST<v8::Debug::EventCallback>(
+            Handle<Foreign>::cast(event_listener_)->foreign_address());
+    EventDetailsImpl event_details(event,
+                                   Handle<JSObject>::cast(exec_state),
+                                   Handle<JSObject>::cast(event_data),
+                                   event_listener_data_,
+                                   client_data);
+    callback(event_details);
+    DCHECK(!isolate_->has_scheduled_exception());
+  } else {
+    // Invoke the JavaScript debug event listener.
+    DCHECK(event_listener_->IsJSFunction());
+    Handle<Object> argv[] = { Handle<Object>(Smi::FromInt(event), isolate_),
+                              exec_state,
+                              event_data,
+                              event_listener_data_ };
+    Handle<JSReceiver> global(isolate_->global_proxy());
+    Execution::TryCall(Handle<JSFunction>::cast(event_listener_),
+                       global, arraysize(argv), argv);
+  }
+  in_debug_event_listener_ = previous;
+}
+
+
+void Debug::ProcessCompileEventInDebugScope(v8::DebugEvent event,
+                                            Handle<Script> script) {
+  if (event_listener_.is_null()) return;
+
+  SuppressDebug while_processing(this);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  Handle<Object> event_data;
+  // Bail out and don't call debugger if exception.
+  if (!MakeCompileEvent(script, event).ToHandle(&event_data)) return;
+
+  // Create the execution state.
+  Handle<Object> exec_state;
+  // Bail out and don't call debugger if exception.
+  if (!MakeExecutionState().ToHandle(&exec_state)) return;
+
+  CallEventCallback(event, exec_state, event_data, NULL);
+}
+
+
+Handle<Context> Debug::GetDebugContext() {
+  DebugScope debug_scope(this);
+  // The global handle may be destroyed soon after.  Return it reboxed.
+  return handle(*debug_context(), isolate_);
+}
+
+
+void Debug::NotifyMessageHandler(v8::DebugEvent event,
+                                 Handle<JSObject> exec_state,
+                                 Handle<JSObject> event_data,
+                                 bool auto_continue) {
+  // Prevent other interrupts from triggering, for example API callbacks,
+  // while dispatching message handler callbacks.
+  PostponeInterruptsScope no_interrupts(isolate_);
+  DCHECK(is_active_);
+  HandleScope scope(isolate_);
+  // Process the individual events.
+  bool sendEventMessage = false;
+  switch (event) {
+    case v8::Break:
+    case v8::BreakForCommand:
+      sendEventMessage = !auto_continue;
+      break;
+    case v8::Exception:
+      sendEventMessage = true;
+      break;
+    case v8::BeforeCompile:
+      break;
+    case v8::AfterCompile:
+      sendEventMessage = true;
+      break;
+    case v8::NewFunction:
+      break;
+    default:
+      UNREACHABLE();
+  }
+
+  // The debug command interrupt flag might have been set when the command was
+  // added. It should be enough to clear the flag only once while we are in the
+  // debugger.
+  DCHECK(in_debug_scope());
+  isolate_->stack_guard()->ClearDebugCommand();
+
+  // Notify the debugger that a debug event has occurred unless auto continue is
+  // active in which case no event is send.
+  if (sendEventMessage) {
+    MessageImpl message = MessageImpl::NewEvent(
+        event,
+        auto_continue,
+        Handle<JSObject>::cast(exec_state),
+        Handle<JSObject>::cast(event_data));
+    InvokeMessageHandler(message);
+  }
+
+  // If auto continue don't make the event cause a break, but process messages
+  // in the queue if any. For script collected events don't even process
+  // messages in the queue as the execution state might not be what is expected
+  // by the client.
+  if (auto_continue && !has_commands()) return;
+
+  // DebugCommandProcessor goes here.
+  bool running = auto_continue;
+
+  Handle<Object> cmd_processor_ctor = Object::GetProperty(
+      isolate_, exec_state, "debugCommandProcessor").ToHandleChecked();
+  Handle<Object> ctor_args[] = { isolate_->factory()->ToBoolean(running) };
+  Handle<Object> cmd_processor = Execution::Call(
+      isolate_, cmd_processor_ctor, exec_state, 1, ctor_args).ToHandleChecked();
+  Handle<JSFunction> process_debug_request = Handle<JSFunction>::cast(
+      Object::GetProperty(
+          isolate_, cmd_processor, "processDebugRequest").ToHandleChecked());
+  Handle<Object> is_running = Object::GetProperty(
+      isolate_, cmd_processor, "isRunning").ToHandleChecked();
+
+  // Process requests from the debugger.
+  do {
+    // Wait for new command in the queue.
+    command_received_.Wait();
+
+    // Get the command from the queue.
+    CommandMessage command = command_queue_.Get();
+    isolate_->logger()->DebugTag(
+        "Got request from command queue, in interactive loop.");
+    if (!is_active()) {
+      // Delete command text and user data.
+      command.Dispose();
+      return;
+    }
+
+    Vector<const uc16> command_text(
+        const_cast<const uc16*>(command.text().start()),
+        command.text().length());
+    Handle<String> request_text = isolate_->factory()->NewStringFromTwoByte(
+        command_text).ToHandleChecked();
+    Handle<Object> request_args[] = { request_text };
+    Handle<Object> answer_value;
+    Handle<String> answer;
+    MaybeHandle<Object> maybe_exception;
+    MaybeHandle<Object> maybe_result =
+        Execution::TryCall(process_debug_request, cmd_processor, 1,
+                           request_args, &maybe_exception);
+
+    if (maybe_result.ToHandle(&answer_value)) {
+      if (answer_value->IsUndefined()) {
+        answer = isolate_->factory()->empty_string();
+      } else {
+        answer = Handle<String>::cast(answer_value);
+      }
+
+      // Log the JSON request/response.
+      if (FLAG_trace_debug_json) {
+        PrintF("%s\n", request_text->ToCString().get());
+        PrintF("%s\n", answer->ToCString().get());
+      }
+
+      Handle<Object> is_running_args[] = { answer };
+      maybe_result = Execution::Call(
+          isolate_, is_running, cmd_processor, 1, is_running_args);
+      Handle<Object> result;
+      if (!maybe_result.ToHandle(&result)) break;
+      running = result->IsTrue();
+    } else {
+      Handle<Object> exception;
+      if (!maybe_exception.ToHandle(&exception)) break;
+      Handle<Object> result;
+      if (!Execution::ToString(isolate_, exception).ToHandle(&result)) break;
+      answer = Handle<String>::cast(result);
+    }
+
+    // Return the result.
+    MessageImpl message = MessageImpl::NewResponse(
+        event, running, exec_state, event_data, answer, command.client_data());
+    InvokeMessageHandler(message);
+    command.Dispose();
+
+    // Return from debug event processing if either the VM is put into the
+    // running state (through a continue command) or auto continue is active
+    // and there are no more commands queued.
+  } while (!running || has_commands());
+  command_queue_.Clear();
+}
+
+
+void Debug::SetEventListener(Handle<Object> callback,
+                             Handle<Object> data) {
+  GlobalHandles* global_handles = isolate_->global_handles();
+
+  // Remove existing entry.
+  GlobalHandles::Destroy(event_listener_.location());
+  event_listener_ = Handle<Object>();
+  GlobalHandles::Destroy(event_listener_data_.location());
+  event_listener_data_ = Handle<Object>();
+
+  // Set new entry.
+  if (!callback->IsUndefined() && !callback->IsNull()) {
+    event_listener_ = global_handles->Create(*callback);
+    if (data.is_null()) data = isolate_->factory()->undefined_value();
+    event_listener_data_ = global_handles->Create(*data);
+  }
+
+  UpdateState();
+}
+
+
+void Debug::SetMessageHandler(v8::Debug::MessageHandler handler) {
+  message_handler_ = handler;
+  UpdateState();
+  if (handler == NULL && in_debug_scope()) {
+    // Send an empty command to the debugger if in a break to make JavaScript
+    // run again if the debugger is closed.
+    EnqueueCommandMessage(Vector<const uint16_t>::empty());
+  }
+}
+
+
+
+void Debug::UpdateState() {
+  is_active_ = message_handler_ != NULL || !event_listener_.is_null();
+  if (is_active_ || in_debug_scope()) {
+    // Note that the debug context could have already been loaded to
+    // bootstrap test cases.
+    isolate_->compilation_cache()->Disable();
+    is_active_ = Load();
+  } else if (is_loaded()) {
+    isolate_->compilation_cache()->Enable();
+    Unload();
+  }
+}
+
+
+// Calls the registered debug message handler. This callback is part of the
+// public API.
+void Debug::InvokeMessageHandler(MessageImpl message) {
+  if (message_handler_ != NULL) message_handler_(message);
+}
+
+
+// Puts a command coming from the public API on the queue.  Creates
+// a copy of the command string managed by the debugger.  Up to this
+// point, the command data was managed by the API client.  Called
+// by the API client thread.
+void Debug::EnqueueCommandMessage(Vector<const uint16_t> command,
+                                  v8::Debug::ClientData* client_data) {
+  // Need to cast away const.
+  CommandMessage message = CommandMessage::New(
+      Vector<uint16_t>(const_cast<uint16_t*>(command.start()),
+                       command.length()),
+      client_data);
+  isolate_->logger()->DebugTag("Put command on command_queue.");
+  command_queue_.Put(message);
+  command_received_.Signal();
+
+  // Set the debug command break flag to have the command processed.
+  if (!in_debug_scope()) isolate_->stack_guard()->RequestDebugCommand();
+}
+
+
+void Debug::EnqueueDebugCommand(v8::Debug::ClientData* client_data) {
+  CommandMessage message = CommandMessage::New(Vector<uint16_t>(), client_data);
+  event_command_queue_.Put(message);
+
+  // Set the debug command break flag to have the command processed.
+  if (!in_debug_scope()) isolate_->stack_guard()->RequestDebugCommand();
+}
+
+
+MaybeHandle<Object> Debug::Call(Handle<JSFunction> fun, Handle<Object> data) {
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return isolate_->factory()->undefined_value();
+
+  // Create the execution state.
+  Handle<Object> exec_state;
+  if (!MakeExecutionState().ToHandle(&exec_state)) {
+    return isolate_->factory()->undefined_value();
+  }
+
+  Handle<Object> argv[] = { exec_state, data };
+  return Execution::Call(
+      isolate_,
+      fun,
+      Handle<Object>(debug_context()->global_proxy(), isolate_),
+      arraysize(argv),
+      argv);
+}
+
+
+void Debug::HandleDebugBreak() {
+  // Ignore debug break during bootstrapping.
+  if (isolate_->bootstrapper()->IsActive()) return;
+  // Just continue if breaks are disabled.
+  if (break_disabled()) return;
+  // Ignore debug break if debugger is not active.
+  if (!is_active()) return;
+
+  StackLimitCheck check(isolate_);
+  if (check.HasOverflowed()) return;
+
+  { JavaScriptFrameIterator it(isolate_);
+    DCHECK(!it.done());
+    Object* fun = it.frame()->function();
+    if (fun && fun->IsJSFunction()) {
+      // Don't stop in builtin functions.
+      if (JSFunction::cast(fun)->IsBuiltin()) return;
+      GlobalObject* global = JSFunction::cast(fun)->context()->global_object();
+      // Don't stop in debugger functions.
+      if (IsDebugGlobal(global)) return;
+    }
+  }
+
+  // Collect the break state before clearing the flags.
+  bool debug_command_only = isolate_->stack_guard()->CheckDebugCommand() &&
+                            !isolate_->stack_guard()->CheckDebugBreak();
+
+  isolate_->stack_guard()->ClearDebugBreak();
+
+  ProcessDebugMessages(debug_command_only);
+}
+
+
+void Debug::ProcessDebugMessages(bool debug_command_only) {
+  isolate_->stack_guard()->ClearDebugCommand();
+
+  StackLimitCheck check(isolate_);
+  if (check.HasOverflowed()) return;
+
+  HandleScope scope(isolate_);
+  DebugScope debug_scope(this);
+  if (debug_scope.failed()) return;
+
+  // Notify the debug event listeners. Indicate auto continue if the break was
+  // a debug command break.
+  OnDebugBreak(isolate_->factory()->undefined_value(), debug_command_only);
+}
+
+
+DebugScope::DebugScope(Debug* debug)
+    : debug_(debug),
+      prev_(debug->debugger_entry()),
+      save_(debug_->isolate_),
+      no_termination_exceptons_(debug_->isolate_,
+                                StackGuard::TERMINATE_EXECUTION) {
+  // Link recursive debugger entry.
+  base::NoBarrier_Store(&debug_->thread_local_.current_debug_scope_,
+                        reinterpret_cast<base::AtomicWord>(this));
+
+  // Store the previous break id and frame id.
+  break_id_ = debug_->break_id();
+  break_frame_id_ = debug_->break_frame_id();
+
+  // Create the new break info. If there is no JavaScript frames there is no
+  // break frame id.
+  JavaScriptFrameIterator it(isolate());
+  bool has_js_frames = !it.done();
+  debug_->thread_local_.break_frame_id_ = has_js_frames ? it.frame()->id()
+                                                        : StackFrame::NO_ID;
+  debug_->SetNextBreakId();
+
+  debug_->UpdateState();
+  // Make sure that debugger is loaded and enter the debugger context.
+  // The previous context is kept in save_.
+  failed_ = !debug_->is_loaded();
+  if (!failed_) isolate()->set_context(*debug->debug_context());
+}
+
+
+
+DebugScope::~DebugScope() {
+  if (!failed_ && prev_ == NULL) {
+    // Clear mirror cache when leaving the debugger. Skip this if there is a
+    // pending exception as clearing the mirror cache calls back into
+    // JavaScript. This can happen if the v8::Debug::Call is used in which
+    // case the exception should end up in the calling code.
+    if (!isolate()->has_pending_exception()) debug_->ClearMirrorCache();
+
+    // If there are commands in the queue when leaving the debugger request
+    // that these commands are processed.
+    if (debug_->has_commands()) isolate()->stack_guard()->RequestDebugCommand();
+  }
+
+  // Leaving this debugger entry.
+  base::NoBarrier_Store(&debug_->thread_local_.current_debug_scope_,
+                        reinterpret_cast<base::AtomicWord>(prev_));
+
+  // Restore to the previous break state.
+  debug_->thread_local_.break_frame_id_ = break_frame_id_;
+  debug_->thread_local_.break_id_ = break_id_;
+
+  debug_->UpdateState();
+}
+
+
+MessageImpl MessageImpl::NewEvent(DebugEvent event,
+                                  bool running,
+                                  Handle<JSObject> exec_state,
+                                  Handle<JSObject> event_data) {
+  MessageImpl message(true, event, running,
+                      exec_state, event_data, Handle<String>(), NULL);
+  return message;
+}
+
+
+MessageImpl MessageImpl::NewResponse(DebugEvent event,
+                                     bool running,
+                                     Handle<JSObject> exec_state,
+                                     Handle<JSObject> event_data,
+                                     Handle<String> response_json,
+                                     v8::Debug::ClientData* client_data) {
+  MessageImpl message(false, event, running,
+                      exec_state, event_data, response_json, client_data);
+  return message;
+}
+
+
+MessageImpl::MessageImpl(bool is_event,
+                         DebugEvent event,
+                         bool running,
+                         Handle<JSObject> exec_state,
+                         Handle<JSObject> event_data,
+                         Handle<String> response_json,
+                         v8::Debug::ClientData* client_data)
+    : is_event_(is_event),
+      event_(event),
+      running_(running),
+      exec_state_(exec_state),
+      event_data_(event_data),
+      response_json_(response_json),
+      client_data_(client_data) {}
+
+
+bool MessageImpl::IsEvent() const {
+  return is_event_;
+}
+
+
+bool MessageImpl::IsResponse() const {
+  return !is_event_;
+}
+
+
+DebugEvent MessageImpl::GetEvent() const {
+  return event_;
+}
+
+
+bool MessageImpl::WillStartRunning() const {
+  return running_;
+}
+
+
+v8::Handle<v8::Object> MessageImpl::GetExecutionState() const {
+  return v8::Utils::ToLocal(exec_state_);
+}
+
+
+v8::Isolate* MessageImpl::GetIsolate() const {
+  return reinterpret_cast<v8::Isolate*>(exec_state_->GetIsolate());
+}
+
+
+v8::Handle<v8::Object> MessageImpl::GetEventData() const {
+  return v8::Utils::ToLocal(event_data_);
+}
+
+
+v8::Handle<v8::String> MessageImpl::GetJSON() const {
+  Isolate* isolate = event_data_->GetIsolate();
+  v8::EscapableHandleScope scope(reinterpret_cast<v8::Isolate*>(isolate));
+
+  if (IsEvent()) {
+    // Call toJSONProtocol on the debug event object.
+    Handle<Object> fun = Object::GetProperty(
+        isolate, event_data_, "toJSONProtocol").ToHandleChecked();
+    if (!fun->IsJSFunction()) {
+      return v8::Handle<v8::String>();
+    }
+
+    MaybeHandle<Object> maybe_json =
+        Execution::TryCall(Handle<JSFunction>::cast(fun), event_data_, 0, NULL);
+    Handle<Object> json;
+    if (!maybe_json.ToHandle(&json) || !json->IsString()) {
+      return v8::Handle<v8::String>();
+    }
+    return scope.Escape(v8::Utils::ToLocal(Handle<String>::cast(json)));
+  } else {
+    return v8::Utils::ToLocal(response_json_);
+  }
+}
+
+
+v8::Handle<v8::Context> MessageImpl::GetEventContext() const {
+  Isolate* isolate = event_data_->GetIsolate();
+  v8::Handle<v8::Context> context = GetDebugEventContext(isolate);
+  // Isolate::context() may be NULL when "script collected" event occurs.
+  DCHECK(!context.IsEmpty());
+  return context;
+}
+
+
+v8::Debug::ClientData* MessageImpl::GetClientData() const {
+  return client_data_;
+}
+
+
+EventDetailsImpl::EventDetailsImpl(DebugEvent event,
+                                   Handle<JSObject> exec_state,
+                                   Handle<JSObject> event_data,
+                                   Handle<Object> callback_data,
+                                   v8::Debug::ClientData* client_data)
+    : event_(event),
+      exec_state_(exec_state),
+      event_data_(event_data),
+      callback_data_(callback_data),
+      client_data_(client_data) {}
+
+
+DebugEvent EventDetailsImpl::GetEvent() const {
+  return event_;
+}
+
+
+v8::Handle<v8::Object> EventDetailsImpl::GetExecutionState() const {
+  return v8::Utils::ToLocal(exec_state_);
+}
+
+
+v8::Handle<v8::Object> EventDetailsImpl::GetEventData() const {
+  return v8::Utils::ToLocal(event_data_);
+}
+
+
+v8::Handle<v8::Context> EventDetailsImpl::GetEventContext() const {
+  return GetDebugEventContext(exec_state_->GetIsolate());
+}
+
+
+v8::Handle<v8::Value> EventDetailsImpl::GetCallbackData() const {
+  return v8::Utils::ToLocal(callback_data_);
+}
+
+
+v8::Debug::ClientData* EventDetailsImpl::GetClientData() const {
+  return client_data_;
+}
+
+
+CommandMessage::CommandMessage() : text_(Vector<uint16_t>::empty()),
+                                   client_data_(NULL) {
+}
+
+
+CommandMessage::CommandMessage(const Vector<uint16_t>& text,
+                               v8::Debug::ClientData* data)
+    : text_(text),
+      client_data_(data) {
+}
+
+
+void CommandMessage::Dispose() {
+  text_.Dispose();
+  delete client_data_;
+  client_data_ = NULL;
+}
+
+
+CommandMessage CommandMessage::New(const Vector<uint16_t>& command,
+                                   v8::Debug::ClientData* data) {
+  return CommandMessage(command.Clone(), data);
+}
+
+
+CommandMessageQueue::CommandMessageQueue(int size) : start_(0), end_(0),
+                                                     size_(size) {
+  messages_ = NewArray<CommandMessage>(size);
+}
+
+
+CommandMessageQueue::~CommandMessageQueue() {
+  while (!IsEmpty()) Get().Dispose();
+  DeleteArray(messages_);
+}
+
+
+CommandMessage CommandMessageQueue::Get() {
+  DCHECK(!IsEmpty());
+  int result = start_;
+  start_ = (start_ + 1) % size_;
+  return messages_[result];
+}
+
+
+void CommandMessageQueue::Put(const CommandMessage& message) {
+  if ((end_ + 1) % size_ == start_) {
+    Expand();
+  }
+  messages_[end_] = message;
+  end_ = (end_ + 1) % size_;
+}
+
+
+void CommandMessageQueue::Expand() {
+  CommandMessageQueue new_queue(size_ * 2);
+  while (!IsEmpty()) {
+    new_queue.Put(Get());
+  }
+  CommandMessage* array_to_free = messages_;
+  *this = new_queue;
+  new_queue.messages_ = array_to_free;
+  // Make the new_queue empty so that it doesn't call Dispose on any messages.
+  new_queue.start_ = new_queue.end_;
+  // Automatic destructor called on new_queue, freeing array_to_free.
+}
+
+
+LockingCommandMessageQueue::LockingCommandMessageQueue(Logger* logger, int size)
+    : logger_(logger), queue_(size) {}
+
+
+bool LockingCommandMessageQueue::IsEmpty() const {
+  base::LockGuard<base::Mutex> lock_guard(&mutex_);
+  return queue_.IsEmpty();
+}
+
+
+CommandMessage LockingCommandMessageQueue::Get() {
+  base::LockGuard<base::Mutex> lock_guard(&mutex_);
+  CommandMessage result = queue_.Get();
+  logger_->DebugEvent("Get", result.text());
+  return result;
+}
+
+
+void LockingCommandMessageQueue::Put(const CommandMessage& message) {
+  base::LockGuard<base::Mutex> lock_guard(&mutex_);
+  queue_.Put(message);
+  logger_->DebugEvent("Put", message.text());
+}
+
+
+void LockingCommandMessageQueue::Clear() {
+  base::LockGuard<base::Mutex> lock_guard(&mutex_);
+  queue_.Clear();
+}
+
+} }  // namespace v8::internal
diff --git a/v4-cokapi/backends/javascript/v8-reference-code/src/debug.h b/v4-cokapi/backends/javascript/v8-reference-code/src/debug.h
new file mode 100644
index 000000000..0ec902443
--- /dev/null
+++ b/v4-cokapi/backends/javascript/v8-reference-code/src/debug.h
@@ -0,0 +1,776 @@
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef V8_DEBUG_H_
+#define V8_DEBUG_H_
+
+#include "src/allocation.h"
+#include "src/arguments.h"
+#include "src/assembler.h"
+#include "src/base/atomicops.h"
+#include "src/base/platform/platform.h"
+#include "src/execution.h"
+#include "src/factory.h"
+#include "src/flags.h"
+#include "src/frames-inl.h"
+#include "src/hashmap.h"
+#include "src/liveedit.h"
+#include "src/string-stream.h"
+#include "src/v8threads.h"
+
+#include "include/v8-debug.h"
+
+namespace v8 {
+namespace internal {
+
+
+// Forward declarations.
+class DebugScope;
+
+
+// Step actions. NOTE: These values are in macros.py as well.
+enum StepAction {
+  StepNone = -1,  // Stepping not prepared.
+  StepOut = 0,    // Step out of the current function.
+  StepNext = 1,   // Step to the next statement in the current function.
+  StepIn = 2,     // Step into new functions invoked or the next statement
+                  // in the current function.
+  StepMin = 3,    // Perform a minimum step in the current function.
+  StepInMin = 4,  // Step into new functions invoked or perform a minimum step
+                  // in the current function.
+  StepFrame = 5   // Step into a new frame or return to previous frame.
+};
+
+
+// Type of exception break. NOTE: These values are in macros.py as well.
+enum ExceptionBreakType {
+  BreakException = 0,
+  BreakUncaughtException = 1
+};
+
+
+// Type of exception break.
+enum BreakLocatorType {
+  ALL_BREAK_LOCATIONS = 0,
+  SOURCE_BREAK_LOCATIONS = 1,
+  CALLS_AND_RETURNS = 2
+};
+
+
+// The different types of breakpoint position alignments.
+// Must match Debug.BreakPositionAlignment in debug-debugger.js
+enum BreakPositionAlignment {
+  STATEMENT_ALIGNED = 0,
+  BREAK_POSITION_ALIGNED = 1
+};
+
+
+// Class for iterating through the break points in a function and changing
+// them.
+class BreakLocationIterator {
+ public:
+  explicit BreakLocationIterator(Handle<DebugInfo> debug_info,
+                                 BreakLocatorType type);
+  virtual ~BreakLocationIterator();
+
+  void Next();
+  void Next(int count);
+  void FindBreakLocationFromAddress(Address pc);
+  void FindBreakLocationFromPosition(int position,
+      BreakPositionAlignment alignment);
+  void Reset();
+  bool Done() const;
+  void SetBreakPoint(Handle<Object> break_point_object);
+  void ClearBreakPoint(Handle<Object> break_point_object);
+  void SetOneShot();
+  void ClearOneShot();
+  bool IsStepInLocation(Isolate* isolate);
+  void PrepareStepIn(Isolate* isolate);
+  bool IsExit() const;
+  bool HasBreakPoint();
+  bool IsDebugBreak();
+  Object* BreakPointObjects();
+  void ClearAllDebugBreak();
+
+
+  inline int code_position() {
+    return static_cast<int>(pc() - debug_info_->code()->entry());
+  }
+  inline int break_point() { return break_point_; }
+  inline int position() { return position_; }
+  inline int statement_position() { return statement_position_; }
+  inline Address pc() { return reloc_iterator_->rinfo()->pc(); }
+  inline Code* code() { return debug_info_->code(); }
+  inline RelocInfo* rinfo() { return reloc_iterator_->rinfo(); }
+  inline RelocInfo::Mode rmode() const {
+    return reloc_iterator_->rinfo()->rmode();
+  }
+  inline RelocInfo* original_rinfo() {
+    return reloc_iterator_original_->rinfo();
+  }
+  inline RelocInfo::Mode original_rmode() const {
+    return reloc_iterator_original_->rinfo()->rmode();
+  }
+
+  bool IsDebuggerStatement();
+
+ protected:
+  bool RinfoDone() const;
+  void RinfoNext();
+
+  BreakLocatorType type_;
+  int break_point_;
+  int position_;
+  int statement_position_;
+  Handle<DebugInfo> debug_info_;
+  RelocIterator* reloc_iterator_;
+  RelocIterator* reloc_iterator_original_;
+
+ private:
+  void SetDebugBreak();
+  void ClearDebugBreak();
+
+  void SetDebugBreakAtIC();
+  void ClearDebugBreakAtIC();
+
+  bool IsDebugBreakAtReturn();
+  void SetDebugBreakAtReturn();
+  void ClearDebugBreakAtReturn();
+
+  bool IsDebugBreakSlot();
+  bool IsDebugBreakAtSlot();
+  void SetDebugBreakAtSlot();
+  void ClearDebugBreakAtSlot();
+
+  DISALLOW_COPY_AND_ASSIGN(BreakLocationIterator);
+};
+
+
+// Cache of all script objects in the heap. When a script is added a weak handle
+// to it is created and that weak handle is stored in the cache. The weak handle
+// callback takes care of removing the script from the cache. The key used in
+// the cache is the script id.
+class ScriptCache : private HashMap {
+ public:
+  explicit ScriptCache(Isolate* isolate);
+  virtual ~ScriptCache() { Clear(); }
+
+  // Add script to the cache.
+  void Add(Handle<Script> script);
+
+  // Return the scripts in the cache.
+  Handle<FixedArray> GetScripts();
+
+ private:
+  // Calculate the hash value from the key (script id).
+  static uint32_t Hash(int key) {
+    return ComputeIntegerHash(key, v8::internal::kZeroHashSeed);
+  }
+
+  // Clear the cache releasing all the weak handles.
+  void Clear();
+
+  // Weak handle callback for scripts in the cache.
+  static void HandleWeakScript(
+      const v8::WeakCallbackData<v8::Value, void>& data);
+
+  Isolate* isolate_;
+};
+
+
+// Linked list holding debug info objects. The debug info objects are kept as
+// weak handles to avoid a debug info object to keep a function alive.
+class DebugInfoListNode {
+ public:
+  explicit DebugInfoListNode(DebugInfo* debug_info);
+  virtual ~DebugInfoListNode();
+
+  DebugInfoListNode* next() { return next_; }
+  void set_next(DebugInfoListNode* next) { next_ = next; }
+  Handle<DebugInfo> debug_info() { return debug_info_; }
+
+ private:
+  // Global (weak) handle to the debug info object.
+  Handle<DebugInfo> debug_info_;
+
+  // Next pointer for linked list.
+  DebugInfoListNode* next_;
+};
+
+
+
+// Message delivered to the message handler callback. This is either a debugger
+// event or the response to a command.
+class MessageImpl: public v8::Debug::Message {
+ public:
+  // Create a message object for a debug event.
+  static MessageImpl NewEvent(DebugEvent event,
+                              bool running,
+                              Handle<JSObject> exec_state,
+                              Handle<JSObject> event_data);
+
+  // Create a message object for the response to a debug command.
+  static MessageImpl NewResponse(DebugEvent event,
+                                 bool running,
+                                 Handle<JSObject> exec_state,
+                                 Handle<JSObject> event_data,
+                                 Handle<String> response_json,
+                                 v8::Debug::ClientData* client_data);
+
+  // Implementation of interface v8::Debug::Message.
+  virtual bool IsEvent() const;
+  virtual bool IsResponse() const;
+  virtual DebugEvent GetEvent() const;
+  virtual bool WillStartRunning() const;
+  virtual v8::Handle<v8::Object> GetExecutionState() const;
+  virtual v8::Handle<v8::Object> GetEventData() const;
+  virtual v8::Handle<v8::String> GetJSON() const;
+  virtual v8::Handle<v8::Context> GetEventContext() const;
+  virtual v8::Debug::ClientData* GetClientData() const;
+  virtual v8::Isolate* GetIsolate() const;
+
+ private:
+  MessageImpl(bool is_event,
+              DebugEvent event,
+              bool running,
+              Handle<JSObject> exec_state,
+              Handle<JSObject> event_data,
+              Handle<String> response_json,
+              v8::Debug::ClientData* client_data);
+
+  bool is_event_;  // Does this message represent a debug event?
+  DebugEvent event_;  // Debug event causing the break.
+  bool running_;  // Will the VM start running after this event?
+  Handle<JSObject> exec_state_;  // Current execution state.
+  Handle<JSObject> event_data_;  // Data associated with the event.
+  Handle<String> response_json_;  // Response JSON if message holds a response.
+  v8::Debug::ClientData* client_data_;  // Client data passed with the request.
+};
+
+
+// Details of the debug event delivered to the debug event listener.
+class EventDetailsImpl : public v8::Debug::EventDetails {
+ public:
+  EventDetailsImpl(DebugEvent event,
+                   Handle<JSObject> exec_state,
+                   Handle<JSObject> event_data,
+                   Handle<Object> callback_data,
+                   v8::Debug::ClientData* client_data);
+  virtual DebugEvent GetEvent() const;
+  virtual v8::Handle<v8::Object> GetExecutionState() const;
+  virtual v8::Handle<v8::Object> GetEventData() const;
+  virtual v8::Handle<v8::Context> GetEventContext() const;
+  virtual v8::Handle<v8::Value> GetCallbackData() const;
+  virtual v8::Debug::ClientData* GetClientData() const;
+ private:
+  DebugEvent event_;  // Debug event causing the break.
+  Handle<JSObject> exec_state_;         // Current execution state.
+  Handle<JSObject> event_data_;         // Data associated with the event.
+  Handle<Object> callback_data_;        // User data passed with the callback
+                                        // when it was registered.
+  v8::Debug::ClientData* client_data_;  // Data passed to DebugBreakForCommand.
+};
+
+
+// Message send by user to v8 debugger or debugger output message.
+// In addition to command text it may contain a pointer to some user data
+// which are expected to be passed along with the command reponse to message
+// handler.
+class CommandMessage {
+ public:
+  static CommandMessage New(const Vector<uint16_t>& command,
+                            v8::Debug::ClientData* data);
+  CommandMessage();
+
+  // Deletes user data and disposes of the text.
+  void Dispose();
+  Vector<uint16_t> text() const { return text_; }
+  v8::Debug::ClientData* client_data() const { return client_data_; }
+ private:
+  CommandMessage(const Vector<uint16_t>& text,
+                 v8::Debug::ClientData* data);
+
+  Vector<uint16_t> text_;
+  v8::Debug::ClientData* client_data_;
+};
+
+
+// A Queue of CommandMessage objects.  A thread-safe version is
+// LockingCommandMessageQueue, based on this class.
+class CommandMessageQueue BASE_EMBEDDED {
+ public:
+  explicit CommandMessageQueue(int size);
+  ~CommandMessageQueue();
+  bool IsEmpty() const { return start_ == end_; }
+  CommandMessage Get();
+  void Put(const CommandMessage& message);
+  void Clear() { start_ = end_ = 0; }  // Queue is empty after Clear().
+ private:
+  // Doubles the size of the message queue, and copies the messages.
+  void Expand();
+
+  CommandMessage* messages_;
+  int start_;
+  int end_;
+  int size_;  // The size of the queue buffer.  Queue can hold size-1 messages.
+};
+
+
+// LockingCommandMessageQueue is a thread-safe circular buffer of CommandMessage
+// messages.  The message data is not managed by LockingCommandMessageQueue.
+// Pointers to the data are passed in and out. Implemented by adding a
+// Mutex to CommandMessageQueue.  Includes logging of all puts and gets.
+class LockingCommandMessageQueue BASE_EMBEDDED {
+ public:
+  LockingCommandMessageQueue(Logger* logger, int size);
+  bool IsEmpty() const;
+  CommandMessage Get();
+  void Put(const CommandMessage& message);
+  void Clear();
+ private:
+  Logger* logger_;
+  CommandMessageQueue queue_;
+  mutable base::Mutex mutex_;
+  DISALLOW_COPY_AND_ASSIGN(LockingCommandMessageQueue);
+};
+
+
+// This class contains the debugger support. The main purpose is to handle
+// setting break points in the code.
+//
+// This class controls the debug info for all functions which currently have
+// active breakpoints in them. This debug info is held in the heap root object
+// debug_info which is a FixedArray. Each entry in this list is of class
+// DebugInfo.
+class Debug {
+ public:
+  // Debug event triggers.
+  void OnDebugBreak(Handle<Object> break_points_hit, bool auto_continue);
+
+  void OnThrow(Handle<Object> exception, bool uncaught);
+  void OnPromiseReject(Handle<JSObject> promise, Handle<Object> value);
+  void OnCompileError(Handle<Script> script);
+  void OnBeforeCompile(Handle<Script> script);
+  void OnAfterCompile(Handle<Script> script);
+  void OnPromiseEvent(Handle<JSObject> data);
+  void OnAsyncTaskEvent(Handle<JSObject> data);
+
+  // API facing.
+  void SetEventListener(Handle<Object> callback, Handle<Object> data);
+  void SetMessageHandler(v8::Debug::MessageHandler handler);
+  void EnqueueCommandMessage(Vector<const uint16_t> command,
+                             v8::Debug::ClientData* client_data = NULL);
+  // Enqueue a debugger command to the command queue for event listeners.
+  void EnqueueDebugCommand(v8::Debug::ClientData* client_data = NULL);
+  MUST_USE_RESULT MaybeHandle<Object> Call(Handle<JSFunction> fun,
+                                           Handle<Object> data);
+  Handle<Context> GetDebugContext();
+  void HandleDebugBreak();
+  void ProcessDebugMessages(bool debug_command_only);
+
+  // Internal logic
+  bool Load();
+  void Break(Arguments args, JavaScriptFrame*);
+  void SetAfterBreakTarget(JavaScriptFrame* frame);
+
+  // Scripts handling.
+  Handle<FixedArray> GetLoadedScripts();
+
+  // Break point handling.
+  bool SetBreakPoint(Handle<JSFunction> function,
+                     Handle<Object> break_point_object,
+                     int* source_position);
+  bool SetBreakPointForScript(Handle<Script> script,
+                              Handle<Object> break_point_object,
+                              int* source_position,
+                              BreakPositionAlignment alignment);
+  void ClearBreakPoint(Handle<Object> break_point_object);
+  void ClearAllBreakPoints();
+  void FloodWithOneShot(Handle<JSFunction> function,
+                        BreakLocatorType type = ALL_BREAK_LOCATIONS);
+  void FloodBoundFunctionWithOneShot(Handle<JSFunction> function);
+  void FloodDefaultConstructorWithOneShot(Handle<JSFunction> function);
+  void FloodWithOneShotGeneric(Handle<JSFunction> function,
+                               Handle<Object> holder = Handle<Object>());
+  void FloodHandlerWithOneShot();
+  void ChangeBreakOnException(ExceptionBreakType type, bool enable);
+  bool IsBreakOnException(ExceptionBreakType type);
+
+  // Stepping handling.
+  void PrepareStep(StepAction step_action,
+                   int step_count,
+                   StackFrame::Id frame_id);
+  void ClearStepping();
+  void ClearStepOut();
+  bool IsStepping() { return thread_local_.step_count_ > 0; }
+  bool StepNextContinue(BreakLocationIterator* break_location_iterator,
+                        JavaScriptFrame* frame);
+  bool StepInActive() { return thread_local_.step_into_fp_ != 0; }
+  void HandleStepIn(Handle<Object> function_obj, Handle<Object> holder,
+                    Address fp, bool is_constructor);
+  bool StepOutActive() { return thread_local_.step_out_fp_ != 0; }
+
+  // Purge all code objects that have no debug break slots.
+  void PrepareForBreakPoints();
+
+  // Returns whether the operation succeeded. Compilation can only be triggered
+  // if a valid closure is passed as the second argument, otherwise the shared
+  // function needs to be compiled already.
+  bool EnsureDebugInfo(Handle<SharedFunctionInfo> shared,
+                       Handle<JSFunction> function);
+  static Handle<DebugInfo> GetDebugInfo(Handle<SharedFunctionInfo> shared);
+  static bool HasDebugInfo(Handle<SharedFunctionInfo> shared);
+
+  // This function is used in FunctionNameUsing* tests.
+  Object* FindSharedFunctionInfoInScript(Handle<Script> script, int position);
+
+  // Returns true if the current stub call is patched to call the debugger.
+  static bool IsDebugBreak(Address addr);
+  // Returns true if the current return statement has been patched to be
+  // a debugger breakpoint.
+  static bool IsDebugBreakAtReturn(RelocInfo* rinfo);
+
+  static Handle<Object> GetSourceBreakLocations(
+      Handle<SharedFunctionInfo> shared,
+      BreakPositionAlignment position_aligment);
+
+  // Check whether a global object is the debug global object.
+  bool IsDebugGlobal(GlobalObject* global);
+
+  // Check whether this frame is just about to return.
+  bool IsBreakAtReturn(JavaScriptFrame* frame);
+
+  // Support for LiveEdit
+  void FramesHaveBeenDropped(StackFrame::Id new_break_frame_id,
+                             LiveEdit::FrameDropMode mode,
+                             Object** restarter_frame_function_pointer);
+
+  // Passed to MakeWeak.
+  static void HandlePhantomDebugInfo(
+      const PhantomCallbackData<DebugInfoListNode>& data);
+
+  // Threading support.
+  char* ArchiveDebug(char* to);
+  char* RestoreDebug(char* from);
+  static int ArchiveSpacePerThread();
+  void FreeThreadResources() { }
+
+  // Record function from which eval was called.
+  static void RecordEvalCaller(Handle<Script> script);
+
+  bool CheckExecutionState(int id) {
+    return !debug_context().is_null() && break_id() != 0 && break_id() == id;
+  }
+
+  // Flags and states.
+  DebugScope* debugger_entry() {
+    return reinterpret_cast<DebugScope*>(
+        base::NoBarrier_Load(&thread_local_.current_debug_scope_));
+  }
+  inline Handle<Context> debug_context() { return debug_context_; }
+  void set_live_edit_enabled(bool v) { live_edit_enabled_ = v; }
+  bool live_edit_enabled() const {
+    return FLAG_enable_liveedit && live_edit_enabled_ ;
+  }
+
+  inline bool is_active() const { return is_active_; }
+  inline bool is_loaded() const { return !debug_context_.is_null(); }
+  inline bool has_break_points() const { return has_break_points_; }
+  inline bool in_debug_scope() const {
+    return !!base::NoBarrier_Load(&thread_local_.current_debug_scope_);
+  }
+  void set_disable_break(bool v) { break_disabled_ = v; }
+
+  StackFrame::Id break_frame_id() { return thread_local_.break_frame_id_; }
+  int break_id() { return thread_local_.break_id_; }
+
+  // Support for embedding into generated code.
+  Address is_active_address() {
+    return reinterpret_cast<Address>(&is_active_);
+  }
+
+  Address after_break_target_address() {
+    return reinterpret_cast<Address>(&after_break_target_);
+  }
+
+  Address restarter_frame_function_pointer_address() {
+    Object*** address = &thread_local_.restarter_frame_function_pointer_;
+    return reinterpret_cast<Address>(address);
+  }
+
+  Address step_in_fp_addr() {
+    return reinterpret_cast<Address>(&thread_local_.step_into_fp_);
+  }
+
+  StepAction last_step_action() { return thread_local_.last_step_action_; }
+
+ private:
+  explicit Debug(Isolate* isolate);
+
+  void UpdateState();
+  void Unload();
+  void SetNextBreakId() {
+    thread_local_.break_id_ = ++thread_local_.break_count_;
+  }
+
+  // Check whether there are commands in the command queue.
+  inline bool has_commands() const { return !command_queue_.IsEmpty(); }
+  inline bool ignore_events() const { return is_suppressed_ || !is_active_; }
+  inline bool break_disabled() const {
+    return break_disabled_ || in_debug_event_listener_;
+  }
+
+  void OnException(Handle<Object> exception, bool uncaught,
+                   Handle<Object> promise);
+
+  // Constructors for debug event objects.
+  MUST_USE_RESULT MaybeHandle<Object> MakeJSObject(
+      const char* constructor_name,
+      int argc,
+      Handle<Object> argv[]);
+  MUST_USE_RESULT MaybeHandle<Object> MakeExecutionState();
+  MUST_USE_RESULT MaybeHandle<Object> MakeBreakEvent(
+      Handle<Object> break_points_hit);
+  MUST_USE_RESULT MaybeHandle<Object> MakeExceptionEvent(
+      Handle<Object> exception,
+      bool uncaught,
+      Handle<Object> promise);
+  MUST_USE_RESULT MaybeHandle<Object> MakeCompileEvent(
+      Handle<Script> script, v8::DebugEvent type);
+  MUST_USE_RESULT MaybeHandle<Object> MakePromiseEvent(
+      Handle<JSObject> promise_event);
+  MUST_USE_RESULT MaybeHandle<Object> MakeAsyncTaskEvent(
+      Handle<JSObject> task_event);
+
+  // Mirror cache handling.
+  void ClearMirrorCache();
+
+  MaybeHandle<Object> PromiseHasUserDefinedRejectHandler(
+      Handle<JSObject> promise);
+
+  void CallEventCallback(v8::DebugEvent event,
+                         Handle<Object> exec_state,
+                         Handle<Object> event_data,
+                         v8::Debug::ClientData* client_data);
+  void ProcessCompileEventInDebugScope(v8::DebugEvent event,
+                                       Handle<Script> script);
+  void ProcessDebugEvent(v8::DebugEvent event,
+                         Handle<JSObject> event_data,
+                         bool auto_continue);
+  void NotifyMessageHandler(v8::DebugEvent event,
+                            Handle<JSObject> exec_state,
+                            Handle<JSObject> event_data,
+                            bool auto_continue);
+  void InvokeMessageHandler(MessageImpl message);
+
+  static bool CompileDebuggerScript(Isolate* isolate, int index);
+  void ClearOneShot();
+  void ActivateStepIn(StackFrame* frame);
+  void ClearStepIn();
+  void ActivateStepOut(StackFrame* frame);
+  void ClearStepNext();
+  void RemoveDebugInfoAndClearFromShared(Handle<DebugInfo> debug_info);
+  void RemoveDebugInfo(DebugInfo** debug_info);
+  void RemoveDebugInfo(DebugInfoListNode* node);
+  void RemoveDebugInfo(DebugInfoListNode* prev, DebugInfoListNode* node);
+  Handle<Object> CheckBreakPoints(Handle<Object> break_point);
+  bool CheckBreakPoint(Handle<Object> break_point_object);
+
+  inline void AssertDebugContext() {
+    DCHECK(isolate_->context() == *debug_context());
+    DCHECK(in_debug_scope());
+  }
+
+  void ThreadInit();
+
+  // Global handles.
+  Handle<Context> debug_context_;
+  Handle<Object> event_listener_;
+  Handle<Object> event_listener_data_;
+
+  v8::Debug::MessageHandler message_handler_;
+
+  static const int kQueueInitialSize = 4;
+  base::Semaphore command_received_;  // Signaled for each command received.
+  LockingCommandMessageQueue command_queue_;
+  LockingCommandMessageQueue event_command_queue_;
+
+  bool is_active_;
+  bool is_suppressed_;
+  bool live_edit_enabled_;
+  bool has_break_points_;
+  bool break_disabled_;
+  bool in_debug_event_listener_;
+  bool break_on_exception_;
+  bool break_on_uncaught_exception_;
+
+  ScriptCache* script_cache_;  // Cache of all scripts in the heap.
+  DebugInfoListNode* debug_info_list_;  // List of active debug info objects.
+
+  // Storage location for jump when exiting debug break calls.
+  // Note that this address is not GC safe.  It should be computed immediately
+  // before returning to the DebugBreakCallHelper.
+  Address after_break_target_;
+
+  // Per-thread data.
+  class ThreadLocal {
+   public:
+    // Top debugger entry.
+    base::AtomicWord current_debug_scope_;
+
+    // Counter for generating next break id.
+    int break_count_;
+
+    // Current break id.
+    int break_id_;
+
+    // Frame id for the frame of the current break.
+    StackFrame::Id break_frame_id_;
+
+    // Step action for last step performed.
+    StepAction last_step_action_;
+
+    // Source statement position from last step next action.
+    int last_statement_position_;
+
+    // Number of steps left to perform before debug event.
+    int step_count_;
+
+    // Frame pointer from last step next or step frame action.
+    Address last_fp_;
+
+    // Number of queued steps left to perform before debug event.
+    int queued_step_count_;
+
+    // Frame pointer for frame from which step in was performed.
+    Address step_into_fp_;
+
+    // Frame pointer for the frame where debugger should be called when current
+    // step out action is completed.
+    Address step_out_fp_;
+
+    // Stores the way how LiveEdit has patched the stack. It is used when
+    // debugger returns control back to user script.
+    LiveEdit::FrameDropMode frame_drop_mode_;
+
+    // When restarter frame is on stack, stores the address
+    // of the pointer to function being restarted. Otherwise (most of the time)
+    // stores NULL. This pointer is used with 'step in' implementation.
+    Object** restarter_frame_function_pointer_;
+  };
+
+  // Storage location for registers when handling debug break calls
+  ThreadLocal thread_local_;
+
+  Isolate* isolate_;
+
+  friend class Isolate;
+  friend class DebugScope;
+  friend class DisableBreak;
+  friend class LiveEdit;
+  friend class SuppressDebug;
+
+  friend Handle<FixedArray> GetDebuggedFunctions();  // In test-debug.cc
+  friend void CheckDebuggerUnloaded(bool check_functions);  // In test-debug.cc
+
+  DISALLOW_COPY_AND_ASSIGN(Debug);
+};
+
+
+DECLARE_RUNTIME_FUNCTION(Debug_Break);
+
+
+// This scope is used to load and enter the debug context and create a new
+// break state.  Leaving the scope will restore the previous state.
+// On failure to load, FailedToEnter returns true.
+class DebugScope BASE_EMBEDDED {
+ public:
+  explicit DebugScope(Debug* debug);
+  ~DebugScope();
+
+  // Check whether loading was successful.
+  inline bool failed() { return failed_; }
+
+  // Get the active context from before entering the debugger.
+  inline Handle<Context> GetContext() { return save_.context(); }
+
+ private:
+  Isolate* isolate() { return debug_->isolate_; }
+
+  Debug* debug_;
+  DebugScope* prev_;               // Previous scope if entered recursively.
+  StackFrame::Id break_frame_id_;  // Previous break frame id.
+  int break_id_;                   // Previous break id.
+  bool failed_;                    // Did the debug context fail to load?
+  SaveContext save_;               // Saves previous context.
+  PostponeInterruptsScope no_termination_exceptons_;
+};
+
+
+// Stack allocated class for disabling break.
+class DisableBreak BASE_EMBEDDED {
+ public:
+  explicit DisableBreak(Debug* debug, bool disable_break)
+      : debug_(debug),
+        previous_break_disabled_(debug->break_disabled_),
+        previous_in_debug_event_listener_(debug->in_debug_event_listener_) {
+    debug_->break_disabled_ = disable_break;
+    debug_->in_debug_event_listener_ = disable_break;
+  }
+  ~DisableBreak() {
+    debug_->break_disabled_ = previous_break_disabled_;
+    debug_->in_debug_event_listener_ = previous_in_debug_event_listener_;
+  }
+
+ private:
+  Debug* debug_;
+  bool previous_break_disabled_;
+  bool previous_in_debug_event_listener_;
+  DISALLOW_COPY_AND_ASSIGN(DisableBreak);
+};
+
+
+class SuppressDebug BASE_EMBEDDED {
+ public:
+  explicit SuppressDebug(Debug* debug)
+      : debug_(debug), old_state_(debug->is_suppressed_) {
+    debug_->is_suppressed_ = true;
+  }
+  ~SuppressDebug() { debug_->is_suppressed_ = old_state_; }
+
+ private:
+  Debug* debug_;
+  bool old_state_;
+  DISALLOW_COPY_AND_ASSIGN(SuppressDebug);
+};
+
+
+// Code generator routines.
+class DebugCodegen : public AllStatic {
+ public:
+  static void GenerateSlot(MacroAssembler* masm);
+  static void GenerateCallICStubDebugBreak(MacroAssembler* masm);
+  static void GenerateLoadICDebugBreak(MacroAssembler* masm);
+  static void GenerateStoreICDebugBreak(MacroAssembler* masm);
+  static void GenerateKeyedLoadICDebugBreak(MacroAssembler* masm);
+  static void GenerateKeyedStoreICDebugBreak(MacroAssembler* masm);
+  static void GenerateCompareNilICDebugBreak(MacroAssembler* masm);
+  static void GenerateReturnDebugBreak(MacroAssembler* masm);
+  static void GenerateCallFunctionStubDebugBreak(MacroAssembler* masm);
+  static void GenerateCallConstructStubDebugBreak(MacroAssembler* masm);
+  static void GenerateCallConstructStubRecordDebugBreak(MacroAssembler* masm);
+  static void GenerateSlotDebugBreak(MacroAssembler* masm);
+  static void GeneratePlainReturnLiveEdit(MacroAssembler* masm);
+
+  // FrameDropper is a code replacement for a JavaScript frame with possibly
+  // several frames above.
+  // There is no calling conventions here, because it never actually gets
+  // called, it only gets returned to.
+  static void GenerateFrameDropperLiveEdit(MacroAssembler* masm);
+};
+
+
+} }  // namespace v8::internal
+
+#endif  // V8_DEBUG_H_
diff --git a/v4-cokapi/backends/python/README.txt b/v4-cokapi/backends/python/README.txt
new file mode 100644
index 000000000..db01c456f
--- /dev/null
+++ b/v4-cokapi/backends/python/README.txt
@@ -0,0 +1,4 @@
+NB: right now I don't use the cokapi backend for Python since it runs
+slower due to Docker and JSONP; I just use the canonical one in
+../../../v3/
+
diff --git a/v4-cokapi/backends/python/generate_json_trace.py b/v4-cokapi/backends/python/generate_json_trace.py
new file mode 100644
index 000000000..a3f06d769
--- /dev/null
+++ b/v4-cokapi/backends/python/generate_json_trace.py
@@ -0,0 +1,60 @@
+# Generates a JSON trace that is compatible with the js/pytutor.js frontend
+
+# WARNING - this does NOT enable any sort of sandboxing, so use at your
+# own risk.
+
+import sys, pg_logger, json
+from optparse import OptionParser
+
+# To make regression tests work consistently across platforms,
+# standardize display of floats to 3 significant figures
+#
+# Trick from:
+# http://stackoverflow.com/questions/1447287/format-floats-with-standard-json-module
+json.encoder.FLOAT_REPR = lambda f: ('%.3f' % f)
+
+def json_finalizer(input_code, output_trace):
+  ret = dict(code=input_code, trace=output_trace)
+  # sort_keys=True leads to printing in DETERMINISTIC order, but might
+  # screw up some old tests ... however, there is STILL non-determinism
+  # in Python 3.3 tests, ugh!
+  json_output = json.dumps(ret, indent=INDENT_LEVEL)
+  return json_output
+
+def js_var_finalizer(input_code, output_trace):
+  global JS_VARNAME
+  ret = dict(code=input_code, trace=output_trace)
+  json_output = json.dumps(ret, indent=None)
+  return "var %s = %s;" % (JS_VARNAME, json_output)
+
+parser = OptionParser(usage="Generate JSON trace for pytutor")
+parser.add_option('-c', '--cumulative', default=False, action='store_true',
+        help='output cumulative trace.')
+parser.add_option('-p', '--heapPrimitives', default=False, action='store_true',
+        help='render primitives as heap objects.')
+parser.add_option('-o', '--compact', default=False, action='store_true',
+        help='output compact trace.')
+parser.add_option('-i', '--input', default=False, action='store',
+        help='JSON list of strings for simulated raw_input.', dest='raw_input_lst_json')
+parser.add_option("--create_jsvar", dest="js_varname", default=None,
+                  help="Create a JavaScript variable out of the trace")
+parser.add_option("--code", dest="usercode", default=None,
+                  help="Load user code from a string instead of a file and output compact JSON")
+
+(options, args) = parser.parse_args()
+INDENT_LEVEL = None if options.compact else 2
+
+if options.usercode:
+  INDENT_LEVEL = None
+  print(pg_logger.exec_script_str_local(options.usercode,
+                                        options.raw_input_lst_json,
+                                        options.cumulative,
+                                        options.heapPrimitives,
+                                        json_finalizer))
+else:
+  fin = sys.stdin if args[0] == "-" else open(args[0])
+  if options.js_varname:
+    JS_VARNAME = options.js_varname
+    print(pg_logger.exec_script_str_local(fin.read(), options.raw_input_lst_json, options.cumulative, options.heapPrimitives, js_var_finalizer))
+  else:
+    print(pg_logger.exec_script_str_local(fin.read(), options.raw_input_lst_json, options.cumulative, options.heapPrimitives, json_finalizer))
diff --git a/v4-cokapi/backends/python/pg_encoder.py b/v4-cokapi/backends/python/pg_encoder.py
new file mode 100644
index 000000000..79b027dcb
--- /dev/null
+++ b/v4-cokapi/backends/python/pg_encoder.py
@@ -0,0 +1,370 @@
+# Online Python Tutor
+# https://github.com/pgbovine/OnlinePythonTutor/
+#
+# Copyright (C) Philip J. Guo (philip@pgbovine.net)
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+# Thanks to John DeNero for making the encoder work on both Python 2 and 3
+
+
+# Given an arbitrary piece of Python data, encode it in such a manner
+# that it can be later encoded into JSON.
+#   http://json.org/
+#
+# We use this function to encode run-time traces of data structures
+# to send to the front-end.
+#
+# Format:
+#   Primitives:
+#   * None, int, long, float, str, bool - unchanged
+#     (json.dumps encodes these fine verbatim, except for inf, -inf, and nan)
+#
+#   exceptions: float('inf')  -> ['SPECIAL_FLOAT', 'Infinity']
+#               float('-inf') -> ['SPECIAL_FLOAT', '-Infinity']
+#               float('nan')  -> ['SPECIAL_FLOAT', 'NaN']
+#               x == int(x)   -> ['SPECIAL_FLOAT', '%.1f' % x]
+#               (this way, 3.0 prints as '3.0' and not as 3, which looks like an int)
+#
+#   If render_heap_primitives is True, then primitive values are rendered
+#   on the heap as ['HEAP_PRIMITIVE', <type name>, <value>]
+#
+#   (for SPECIAL_FLOAT values, <value> is a list like ['SPECIAL_FLOAT', 'Infinity'])
+#
+#   Compound objects:
+#   * list     - ['LIST', elt1, elt2, elt3, ..., eltN]
+#   * tuple    - ['TUPLE', elt1, elt2, elt3, ..., eltN]
+#   * set      - ['SET', elt1, elt2, elt3, ..., eltN]
+#   * dict     - ['DICT', [key1, value1], [key2, value2], ..., [keyN, valueN]]
+#   * instance - ['INSTANCE', class name, [attr1, value1], [attr2, value2], ..., [attrN, valueN]]
+#   * instance with __str__ defined - ['INSTANCE_PPRINT', class name, <__str__ value>]
+#   * class    - ['CLASS', class name, [list of superclass names], [attr1, value1], [attr2, value2], ..., [attrN, valueN]]
+#   * function - ['FUNCTION', function name, parent frame ID (for nested functions)]
+#   * module   - ['module', module name]
+#   * other    - [<type name>, string representation of object]
+#   * compound object reference - ['REF', target object's unique_id]
+#
+# the unique_id is derived from id(), which allows us to capture aliasing
+
+
+# number of significant digits for floats
+FLOAT_PRECISION = 4
+
+
+from collections import defaultdict
+import re, types
+import sys
+import math
+typeRE = re.compile("<type '(.*)'>")
+classRE = re.compile("<class '(.*)'>")
+
+import inspect
+
+# TODO: maybe use the 'six' library to smooth over Py2 and Py3 incompatibilities?
+is_python3 = (sys.version_info[0] == 3)
+if is_python3:
+  # avoid name errors (GROSS!)
+  long = int
+  unicode = str
+
+
+def is_class(dat):
+  """Return whether dat is a class."""
+  if is_python3:
+    return isinstance(dat, type)
+  else:
+    return type(dat) in (types.ClassType, types.TypeType)
+
+
+def is_instance(dat):
+  """Return whether dat is an instance of a class."""
+  if is_python3:
+    return type(dat) not in PRIMITIVE_TYPES and \
+           isinstance(type(dat), type) and \
+           not isinstance(dat, type)
+  else:
+    # ugh, classRE match is a bit of a hack :(
+    return type(dat) == types.InstanceType or classRE.match(str(type(dat)))
+
+
+def get_name(obj):
+  """Return the name of an object."""
+  return obj.__name__ if hasattr(obj, '__name__') else get_name(type(obj))
+
+
+PRIMITIVE_TYPES = (int, long, float, str, unicode, bool, type(None))
+
+def encode_primitive(dat):
+  t = type(dat)
+  if t is float:
+    if math.isinf(dat):
+      if dat > 0:
+        return ['SPECIAL_FLOAT', 'Infinity']
+      else:
+        return ['SPECIAL_FLOAT', '-Infinity']
+    elif math.isnan(dat):
+      return ['SPECIAL_FLOAT', 'NaN']
+    else:
+      # render floats like 3.0 as '3.0' and not as 3
+      if dat == int(dat):
+        return ['SPECIAL_FLOAT', '%.1f' % dat]
+      else:
+        return round(dat, FLOAT_PRECISION)
+  elif t is str and (not is_python3):
+    # hack only for Python 2 strings ... always turn into unicode
+    # and display '?' when it's not valid unicode
+    return dat.decode('utf-8', 'replace')
+  else:
+    # return all other primitives verbatim
+    return dat
+
+
+# grab a line number like ' <line 2>' or ' <line 2b>'
+def create_lambda_line_number(codeobj, line_to_lambda_code):
+  try:
+    lambda_lineno = codeobj.co_firstlineno
+    lst = line_to_lambda_code[lambda_lineno]
+    ind = lst.index(codeobj)
+    # add a suffix for all subsequent lambdas on a line beyond the first
+    # (nix this for now because order isn't guaranteed when you have
+    #  multiple lambdas on the same line)
+    '''
+    if ind > 0:
+      lineno_str = str(lambda_lineno) + chr(ord('a') + ind)
+    else:
+      lineno_str = str(lambda_lineno)
+    '''
+    lineno_str = str(lambda_lineno)
+    return ' <line ' + lineno_str + '>'
+  except:
+    return ''
+
+
+# Note that this might BLOAT MEMORY CONSUMPTION since we're holding on
+# to every reference ever created by the program without ever releasing
+# anything!
+class ObjectEncoder:
+  def __init__(self, render_heap_primitives):
+    # Key: canonicalized small ID
+    # Value: encoded (compound) heap object
+    self.encoded_heap_objects = {}
+
+    self.render_heap_primitives = render_heap_primitives
+
+    self.id_to_small_IDs = {}
+    self.cur_small_ID = 1
+
+    # wow, creating unique identifiers for lambdas is quite annoying,
+    # especially if we want to properly differentiate:
+    # 1.) multiple lambdas defined on the same line, and
+    # 2.) the same lambda code defined multiple times on different lines
+    #
+    # However, it gets confused when there are multiple identical
+    # lambdas on the same line, like:
+    # f(lambda x:x*x, lambda y:y*y, lambda x:x*x)
+
+    # (assumes everything is in one file)
+    # Key:   line number
+    # Value: list of the code objects of lambdas defined
+    #        on that line in the order they were defined
+    self.line_to_lambda_code = defaultdict(list)
+
+
+  def get_heap(self):
+    return self.encoded_heap_objects
+
+
+  def reset_heap(self):
+    # VERY IMPORTANT to reassign to an empty dict rather than just
+    # clearing the existing dict, since get_heap() could have been
+    # called earlier to return a reference to a previous heap state
+    self.encoded_heap_objects = {}
+
+  def set_function_parent_frame_ID(self, ref_obj, enclosing_frame_id):
+    assert ref_obj[0] == 'REF'
+    func_obj = self.encoded_heap_objects[ref_obj[1]]
+    assert func_obj[0] == 'FUNCTION'
+    func_obj[-1] = enclosing_frame_id
+
+
+  # return either a primitive object or an object reference;
+  # and as a side effect, update encoded_heap_objects
+  def encode(self, dat, get_parent):
+    """Encode a data value DAT using the GET_PARENT function for parent ids."""
+    # primitive type
+    if not self.render_heap_primitives and type(dat) in PRIMITIVE_TYPES:
+      return encode_primitive(dat)
+    # compound type - return an object reference and update encoded_heap_objects
+    else:
+      my_id = id(dat)
+
+      try:
+        my_small_id = self.id_to_small_IDs[my_id]
+      except KeyError:
+        my_small_id = self.cur_small_ID
+        self.id_to_small_IDs[my_id] = self.cur_small_ID
+        self.cur_small_ID += 1
+
+      del my_id # to prevent bugs later in this function
+
+      ret = ['REF', my_small_id]
+
+      # punt early if you've already encoded this object
+      if my_small_id in self.encoded_heap_objects:
+        return ret
+
+
+      # major side-effect!
+      new_obj = []
+      self.encoded_heap_objects[my_small_id] = new_obj
+
+      typ = type(dat)
+
+      if typ == list:
+        new_obj.append('LIST')
+        for e in dat:
+          new_obj.append(self.encode(e, get_parent))
+      elif typ == tuple:
+        new_obj.append('TUPLE')
+        for e in dat:
+          new_obj.append(self.encode(e, get_parent))
+      elif typ == set:
+        new_obj.append('SET')
+        for e in dat:
+          new_obj.append(self.encode(e, get_parent))
+      elif typ == dict:
+        new_obj.append('DICT')
+        for (k, v) in dat.items():
+          # don't display some built-in locals ...
+          if k not in ('__module__', '__return__', '__locals__'):
+            new_obj.append([self.encode(k, get_parent), self.encode(v, get_parent)])
+      elif typ in (types.FunctionType, types.MethodType):
+        if is_python3:
+          argspec = inspect.getfullargspec(dat)
+        else:
+          argspec = inspect.getargspec(dat)
+
+        printed_args = [e for e in argspec.args]
+        if argspec.varargs:
+          printed_args.append('*' + argspec.varargs)
+
+        if is_python3:
+          if argspec.varkw:
+            printed_args.append('**' + argspec.varkw)
+          if argspec.kwonlyargs:
+            printed_args.extend(argspec.kwonlyargs)
+        else:
+          if argspec.keywords:
+            printed_args.append('**' + argspec.keywords)
+
+        func_name = get_name(dat)
+
+        pretty_name = func_name
+
+        # sometimes might fail for, say, <genexpr>, so just ignore
+        # failures for now ...
+        try:
+          pretty_name += '(' + ', '.join(printed_args) + ')'
+        except TypeError:
+          pass
+
+        # put a line number suffix on lambdas to more uniquely identify
+        # them, since they don't have names
+        if func_name == '<lambda>':
+            cod = (dat.__code__ if is_python3 else dat.func_code) # ugh!
+            lst = self.line_to_lambda_code[cod.co_firstlineno]
+            if cod not in lst:
+                lst.append(cod)
+            pretty_name += create_lambda_line_number(cod,
+                                                     self.line_to_lambda_code)
+
+        encoded_val = ['FUNCTION', pretty_name, None]
+        if get_parent:
+          enclosing_frame_id = get_parent(dat)
+          encoded_val[2] = enclosing_frame_id
+        new_obj.extend(encoded_val)
+      elif typ is types.BuiltinFunctionType:
+        pretty_name = get_name(dat) + '(...)'
+        new_obj.extend(['FUNCTION', pretty_name, None])
+      elif is_class(dat) or is_instance(dat):
+        self.encode_class_or_instance(dat, new_obj)
+      elif typ is types.ModuleType:
+        new_obj.extend(['module', dat.__name__])
+      elif typ in PRIMITIVE_TYPES:
+        assert self.render_heap_primitives
+        new_obj.extend(['HEAP_PRIMITIVE', type(dat).__name__, encode_primitive(dat)])
+      else:
+        typeStr = str(typ)
+        m = typeRE.match(typeStr)
+
+        if not m:
+          m = classRE.match(typeStr)
+
+        assert m, typ
+        new_obj.extend([m.group(1), str(dat)])
+
+      return ret
+
+
+  def encode_class_or_instance(self, dat, new_obj):
+    """Encode dat as a class or instance."""
+    if is_instance(dat):
+      if hasattr(dat, '__class__'):
+        # common case ...
+        class_name = get_name(dat.__class__)
+      else:
+        # super special case for something like
+        # "from datetime import datetime_CAPI" in Python 3.2,
+        # which is some weird 'PyCapsule' type ...
+        # http://docs.python.org/release/3.1.5/c-api/capsule.html
+        class_name = get_name(type(dat))
+
+      if hasattr(dat, '__str__') and \
+         (not dat.__class__.__str__ is object.__str__): # make sure it's not the lame default __str__
+        # N.B.: when objects are being constructed, this call
+        # might fail since not all fields have yet been populated
+        try:
+          pprint_str = str(dat)
+        except:
+          pprint_str = '<incomplete object>'
+
+        new_obj.extend(['INSTANCE_PPRINT', class_name, pprint_str])
+        return # bail early
+      else:
+        new_obj.extend(['INSTANCE', class_name])
+        # don't traverse inside modules, or else risk EXPLODING the visualization
+        if class_name == 'module':
+          return
+    else:
+      superclass_names = [e.__name__ for e in dat.__bases__ if e is not object]
+      new_obj.extend(['CLASS', get_name(dat), superclass_names])
+
+    # traverse inside of its __dict__ to grab attributes
+    # (filter out useless-seeming ones, based on anecdotal observation):
+    hidden = ('__doc__', '__module__', '__return__', '__dict__',
+        '__locals__', '__weakref__', '__qualname__')
+    if hasattr(dat, '__dict__'):
+      user_attrs = sorted([e for e in dat.__dict__ if e not in hidden])
+    else:
+      user_attrs = []
+
+    for attr in user_attrs:
+      new_obj.append([self.encode(attr, None), self.encode(dat.__dict__[attr], None)])
+
diff --git a/v4-cokapi/backends/python/pg_logger.py b/v4-cokapi/backends/python/pg_logger.py
new file mode 100644
index 000000000..05086c23f
--- /dev/null
+++ b/v4-cokapi/backends/python/pg_logger.py
@@ -0,0 +1,1266 @@
+# Online Python Tutor
+# https://github.com/pgbovine/OnlinePythonTutor/
+#
+# Copyright (C) Philip J. Guo (philip@pgbovine.net)
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+# This is the meat of the Online Python Tutor back-end.  It implements a
+# full logger for Python program execution (based on pdb, the standard
+# Python debugger imported via the bdb module), printing out the values
+# of all in-scope data structures after each executed instruction.
+
+# WARNING: WE DON'T TRY TO DO ANY SANDBOXING HERE, so if you are running
+# this on a Web server, make sure to use some kind of sandboxing scheme.
+
+
+import sys
+import bdb # the KEY import here!
+import re
+import traceback
+import types
+
+# TODO: use the 'six' package to smooth out Py2 and Py3 differences
+is_python3 = (sys.version_info[0] == 3)
+
+# NB: don't use cStringIO since it doesn't support unicode!!!
+if is_python3:
+  import io as StringIO
+else:
+  import StringIO
+import pg_encoder
+
+
+# TODO: not threadsafe:
+
+# upper-bound on the number of executed lines, in order to guard against
+# infinite loops
+MAX_EXECUTED_LINES = 300
+
+#DEBUG = False
+DEBUG = True
+
+BREAKPOINT_STR = '#break'
+
+CLASS_RE = re.compile('class\s+')
+
+
+# From http://coreygoldberg.blogspot.com/2009/05/python-redirect-or-turn-off-stdout-and.html
+class NullDevice():
+    def write(self, s):
+        pass
+
+
+# These could lead to XSS or other code injection attacks, so be careful:
+__html__ = None
+def setHTML(htmlStr):
+  global __html__
+  __html__ = htmlStr
+
+__css__ = None
+def setCSS(cssStr):
+  global __css__
+  __css__ = cssStr
+
+__js__ = None
+def setJS(jsStr):
+  global __js__
+  __js__ = jsStr
+
+
+# ugh, I can't figure out why in Python 2, __builtins__ seems to
+# be a dict, but in Python 3, __builtins__ seems to be a module,
+# so just handle both cases ... UGLY!
+if type(__builtins__) is dict:
+  BUILTIN_IMPORT = __builtins__['__import__']
+else:
+  assert type(__builtins__) is types.ModuleType
+  BUILTIN_IMPORT = __builtins__.__import__
+
+
+# Support interactive user input by:
+#
+# 1. running the entire program up to a call to raw_input (or input in py3),
+# 2. bailing and returning a trace ending in a special 'raw_input' event,
+# 3. letting the web frontend issue a prompt to the user to grab a string,
+# 4. RE-RUNNING the whole program with that string added to input_string_queue,
+# 5. which should bring execution to the next raw_input call (if
+#    available), or to termination.
+# Repeat until no more raw_input calls are encountered.
+# Note that this is mad inefficient, but is simple to implement!
+
+# VERY IMPORTANT -- set random seed to 0 to ensure deterministic execution:
+import random
+random.seed(0)
+
+# queue of input strings passed from either raw_input or mouse_input
+input_string_queue = []
+
+class RawInputException(Exception):
+  pass
+
+def raw_input_wrapper(prompt=''):
+  if input_string_queue:
+    input_str = input_string_queue.pop(0)
+
+    # write the prompt and user input to stdout, to emulate what happens
+    # at the terminal
+    sys.stdout.write(prompt)
+    sys.stdout.write(input_str + "\n") # newline to simulate the user hitting Enter
+    return input_str
+  raise RawInputException(prompt)
+
+class MouseInputException(Exception):
+  pass
+
+def mouse_input_wrapper(prompt=''):
+  if input_string_queue:
+    return input_string_queue.pop(0)
+  raise MouseInputException(prompt)
+
+
+IGNORE_VARS = set(('__user_stdout__', '__OPT_toplevel__', '__builtins__', '__name__', '__exception__', '__doc__', '__package__'))
+
+def get_user_stdout(frame):
+  my_user_stdout = frame.f_globals['__user_stdout__']
+
+  # This is SUPER KRAZY! In Python 2, the buflist inside of a StringIO
+  # instance can be made up of both str and unicode, so we need to convert
+  # the str to unicode and replace invalid characters with the Unicode '?'
+  # But leave unicode elements alone. This way, EVERYTHING inside buflist
+  # will be unicode. (Note that in Python 3, everything is already unicode,
+  # so we're fine.)
+  if not is_python3:
+    my_user_stdout.buflist = [(e.decode('utf-8', 'replace')
+                               if type(e) is str
+                               else e)
+                              for e in my_user_stdout.buflist]
+  return my_user_stdout.getvalue()
+
+
+'''
+2013-12-26
+
+Okay, what's with this f_valuestack business?
+
+If you compile your own CPython and patch Objects/frameobject.c to add a
+Python accessor for f_valuestack, then you can actually access the value
+stack, which is useful for, say, grabbbing the objects within
+list/set/dict comprehensions as they're being built. e.g., try:
+
+    z = [x*y for x in range(5) for y in range(5)]
+
+Note that on pythontutor.com, I am currently running custom-compiled
+versions of Python-2.7.6 and Python-3.3.3 with this f_valuestack hack.
+Unless you run your own custom CPython, you won't get these benefits.
+
+
+Patch:
+
+ static PyObject *
+ frame_getlineno(PyFrameObject *f, void *closure)
+ {
+     return PyLong_FromLong(PyFrame_GetLineNumber(f));
+ }
+
++// copied from Py2crazy, which was for Python 2, but let's hope this still works!
++static PyObject *
++frame_getvaluestack(PyFrameObject* f) {
++    // pgbovine - TODO: will this memory leak? hopefully not,
++    // since all other accessors seem to follow the same idiom
++    PyObject* lst = PyList_New(0);
++    if (f->f_stacktop != NULL) {
++        PyObject** p = NULL;
++        for (p = f->f_valuestack; p < f->f_stacktop; p++) {
++            PyList_Append(lst, *p);
++        }
++    }
++
++    return lst;
++}
++
+ /* Setter for f_lineno - you can set f_lineno from within a trace function in
+  * order to jump to a given line of code, subject to some restrictions.  Most
+  * lines are OK to jump to because they don't make any assumptions about the
+@@ -368,6 +384,11 @@
+
+ static PyGetSetDef frame_getsetlist[] = {
+     {"f_locals",        (getter)frame_getlocals, NULL, NULL},
+     {"f_lineno",        (getter)frame_getlineno,
+                     (setter)frame_setlineno, NULL},
+     {"f_trace",         (getter)frame_gettrace, (setter)frame_settrace, NULL},
++
++    // pgbovine
++    {"f_valuestack",(getter)frame_getvaluestack,
++                    (setter)NULL /* don't let it be set */, NULL},
++
+     {0}
+ };
+'''
+
+# at_global_scope should be true only if 'frame' represents the global scope
+def get_user_globals(frame, at_global_scope=False):
+  d = filter_var_dict(frame.f_globals)
+
+  # don't blurt out all of f_valuestack for now ...
+  '''
+  if at_global_scope and hasattr(frame, 'f_valuestack'):
+    for (i, e) in enumerate(frame.f_valuestack):
+      d['_tmp' + str(i+1)] = e
+  '''
+
+  # print out list objects being built up in Python 2.x list comprehensions
+  # (which don't have its own special <listcomp> frame, sadly)
+  if not is_python3 and hasattr(frame, 'f_valuestack'):
+    for (i, e) in enumerate([e for e in frame.f_valuestack if type(e) is list]):
+      d['_tmp' + str(i+1)] = e
+
+  # also filter out __return__ for globals only, but NOT for locals
+  if '__return__' in d:
+    del d['__return__']
+  return d
+
+def get_user_locals(frame):
+  ret = filter_var_dict(frame.f_locals)
+  # don't blurt out all of f_valuestack for now ...
+  '''
+  if hasattr(frame, 'f_valuestack'):
+    for (i, e) in enumerate(frame.f_valuestack):
+      ret['_tmp' + str(i+1)] = e
+  '''
+
+  # special printing of list/set/dict comprehension objects as they are
+  # being built up incrementally ...
+  f_name = frame.f_code.co_name
+  if hasattr(frame, 'f_valuestack'):
+    # print out list objects being built up in Python 2.x list comprehensions
+    # (which don't have its own special <listcomp> frame, sadly)
+    if not is_python3:
+      for (i, e) in enumerate([e for e in frame.f_valuestack
+                               if type(e) is list]):
+        ret['_tmp' + str(i+1)] = e
+
+    # for dict and set comprehensions, which have their own frames:
+    if f_name.endswith('comp>'):
+      for (i, e) in enumerate([e for e in frame.f_valuestack
+                               if type(e) in (list, set, dict)]):
+        ret['_tmp' + str(i+1)] = e
+
+  return ret
+
+def filter_var_dict(d):
+  ret = {}
+  for (k,v) in d.items():
+    if k not in IGNORE_VARS:
+      ret[k] = v
+  return ret
+
+
+# yield all function objects locally-reachable from frame,
+# making sure to traverse inside all compound objects ...
+def visit_all_locally_reachable_function_objs(frame):
+  for (k, v) in get_user_locals(frame).items():
+    for e in visit_function_obj(v, set()):
+      if e: # only non-null if it's a function object
+        assert type(e) in (types.FunctionType, types.MethodType)
+        yield e
+
+
+# TODO: this might be slow if we're traversing inside lots of objects:
+def visit_function_obj(v, ids_seen_set):
+  v_id = id(v)
+
+  # to prevent infinite loop
+  if v_id in ids_seen_set:
+    yield None
+  else:
+    ids_seen_set.add(v_id)
+
+    typ = type(v)
+    
+    # simple base case
+    if typ in (types.FunctionType, types.MethodType):
+      yield v
+
+    # recursive cases
+    elif typ in (list, tuple, set):
+      for child in v:
+        for child_res in visit_function_obj(child, ids_seen_set):
+          yield child_res
+
+    elif typ == dict or pg_encoder.is_class(v) or pg_encoder.is_instance(v):
+      contents_dict = None
+
+      if typ == dict:
+        contents_dict = v
+      # warning: some classes or instances don't have __dict__ attributes
+      elif hasattr(v, '__dict__'):
+        contents_dict = v.__dict__
+
+      if contents_dict:
+        for (key_child, val_child) in contents_dict.items():
+          for key_child_res in visit_function_obj(key_child, ids_seen_set):
+            yield key_child_res
+          for val_child_res in visit_function_obj(val_child, ids_seen_set):
+            yield val_child_res
+
+    # degenerate base case
+    yield None
+
+
+class PGLogger(bdb.Bdb):
+
+    def __init__(self, cumulative_mode, heap_primitives, show_only_outputs, finalizer_func,
+                 disable_security_checks=False, crazy_mode=False):
+        bdb.Bdb.__init__(self)
+        self.mainpyfile = ''
+        self._wait_for_mainpyfile = 0
+
+        self.disable_security_checks = disable_security_checks
+
+        # if True, then displays ALL stack frames that have ever existed
+        # rather than only those currently on the stack (and their
+        # lexical parents)
+        self.cumulative_mode = cumulative_mode
+
+        # if True, then render certain primitive objects as heap objects
+        self.render_heap_primitives = heap_primitives
+
+        # if True, then don't render any data structures in the trace,
+        # and show only outputs
+        self.show_only_outputs = show_only_outputs
+
+        # Run using the custom Py2crazy Python interpreter
+        self.crazy_mode = crazy_mode
+
+        # a function that takes the output trace as a parameter and
+        # processes it
+        self.finalizer_func = finalizer_func
+
+        # each entry contains a dict with the information for a single
+        # executed line
+        self.trace = []
+
+        # if this is true, don't put any more stuff into self.trace
+        self.done = False
+
+        # if this is non-null, don't do any more tracing until a
+        # 'return' instruction with a stack gotten from
+        # get_stack_code_IDs() that matches wait_for_return_stack
+        self.wait_for_return_stack = None
+
+        #http://stackoverflow.com/questions/2112396/in-python-in-google-app-engine-how-do-you-capture-output-produced-by-the-print
+        self.GAE_STDOUT = sys.stdout
+
+        # Key:   function object
+        # Value: parent frame
+        self.closures = {}
+
+        # set of function objects that were defined in the global scope
+        self.globally_defined_funcs = set()
+
+        # Key: frame object
+        # Value: monotonically increasing small ID, based on call order
+        self.frame_ordered_ids = {}
+        self.cur_frame_id = 1
+
+        # List of frames to KEEP AROUND after the function exits.
+        # If cumulative_mode is True, then keep ALL frames in
+        # zombie_frames; otherwise keep only frames where
+        # nested functions were defined within them.
+        self.zombie_frames = []
+
+        # set of elements within zombie_frames that are also
+        # LEXICAL PARENTS of other frames
+        self.parent_frames_set = set()
+
+        # all globals that ever appeared in the program, in the order in
+        # which they appeared. note that this might be a superset of all
+        # the globals that exist at any particular execution point,
+        # since globals might have been deleted (using, say, 'del')
+        self.all_globals_in_order = []
+
+        # very important for this single object to persist throughout
+        # execution, or else canonical small IDs won't be consistent.
+        self.encoder = pg_encoder.ObjectEncoder(self.render_heap_primitives)
+
+        self.executed_script = None # Python script to be executed!
+
+        # if there is at least one line that ends with BREAKPOINT_STR,
+        # then activate "breakpoint mode", where execution should stop
+        # ONLY at breakpoint lines.
+        self.breakpoints = []
+
+        self.prev_lineno = -1 # keep track of previous line just executed
+
+
+    def get_frame_id(self, cur_frame):
+      return self.frame_ordered_ids[cur_frame]
+
+    # Returns the (lexical) parent of a function value.
+    def get_parent_of_function(self, val):
+      if val not in self.closures:
+        return None
+      return self.get_frame_id(self.closures[val])
+
+
+    # Returns the (lexical) parent frame of the function that was called
+    # to create the stack frame 'frame'.
+    #
+    # OKAY, this is a SUPER hack, but I don't see a way around it
+    # since it's impossible to tell exactly which function
+    # ('closure') object was called to create 'frame'.
+    #
+    # The Python interpreter doesn't maintain this information,
+    # so unless we hack the interpreter, we will simply have
+    # to make an educated guess based on the contents of local
+    # variables inherited from possible parent frame candidates.
+    def get_parent_frame(self, frame):
+      for (func_obj, parent_frame) in self.closures.items():
+        # ok, there's a possible match, but let's compare the
+        # local variables in parent_frame to those of frame
+        # to make sure. this is a hack that happens to work because in
+        # Python, each stack frame inherits ('inlines') a copy of the
+        # variables from its (lexical) parent frame.
+        if func_obj.__code__ == frame.f_code:
+          all_matched = True
+          for k in frame.f_locals:
+            # Do not try to match local names
+            if k in frame.f_code.co_varnames:
+              continue
+            if k != '__return__' and k in parent_frame.f_locals:
+              if parent_frame.f_locals[k] != frame.f_locals[k]:
+                all_matched = False
+                break
+
+          if all_matched:
+            return parent_frame
+
+      return None
+
+
+    def lookup_zombie_frame_by_id(self, frame_id):
+      # TODO: kinda inefficient
+      for e in self.zombie_frames:
+        if self.get_frame_id(e) == frame_id:
+          return e
+      assert False # should never get here
+
+
+    # unused ...
+    #def reset(self):
+    #    bdb.Bdb.reset(self)
+    #    self.forget()
+
+
+    def forget(self):
+        self.lineno = None
+        self.stack = []
+        self.curindex = 0
+        self.curframe = None
+
+    def setup(self, f, t):
+        self.forget()
+        self.stack, self.curindex = self.get_stack(f, t)
+        self.curframe = self.stack[self.curindex][0]
+
+    # should be a reasonably unique ID to match calls and returns:
+    def get_stack_code_IDs(self):
+        return [id(e[0].f_code) for e in self.stack]
+
+
+    # Override Bdb methods
+
+    def user_call(self, frame, argument_list):
+        """This method is called when there is the remote possibility
+        that we ever need to stop in this function."""
+        # TODO: figure out a way to move this down to 'def interaction'
+        # or right before self.trace.append ...
+        if self.done: return
+
+        if self._wait_for_mainpyfile:
+            return
+        if self.stop_here(frame):
+            # delete __return__ so that on subsequent calls to
+            # a generator function, the OLD yielded (returned)
+            # value gets deleted from the frame ...
+            try:
+              del frame.f_locals['__return__']
+            except KeyError:
+              pass
+
+            self.interaction(frame, None, 'call')
+
+    def user_line(self, frame):
+        """This function is called when we stop or break at this line."""
+        if self.done: return
+
+        if self._wait_for_mainpyfile:
+            if (self.canonic(frame.f_code.co_filename) != "<string>" or
+                frame.f_lineno <= 0):
+                return
+            self._wait_for_mainpyfile = 0
+        self.interaction(frame, None, 'step_line')
+
+    def user_return(self, frame, return_value):
+        """This function is called when a return trap is set here."""
+        if self.done: return
+
+        frame.f_locals['__return__'] = return_value
+        self.interaction(frame, None, 'return')
+
+    def user_exception(self, frame, exc_info):
+        """This function is called if an exception occurs,
+        but only if we are to stop at or just below this level."""
+        if self.done: return
+
+        exc_type, exc_value, exc_traceback = exc_info
+        frame.f_locals['__exception__'] = exc_type, exc_value
+        if type(exc_type) == type(''):
+            exc_type_name = exc_type
+        else: exc_type_name = exc_type.__name__
+
+        if exc_type_name == 'RawInputException':
+          self.trace.append(dict(event='raw_input', prompt=exc_value.args[0]))
+          self.done = True
+        elif exc_type_name == 'MouseInputException':
+          self.trace.append(dict(event='mouse_input', prompt=exc_value.args[0]))
+          self.done = True
+        else:
+          self.interaction(frame, exc_traceback, 'exception')
+
+    def get_script_line(self, n):
+        return self.executed_script_lines[n-1]
+
+    # General interaction function
+
+    def interaction(self, frame, traceback, event_type):
+        self.setup(frame, traceback)
+        tos = self.stack[self.curindex]
+        top_frame = tos[0]
+        lineno = tos[1]
+
+
+        # debug ...
+        '''
+        print >> sys.stderr
+        print >> sys.stderr, '=== STACK ===', 'curindex:', self.curindex
+        for (e,ln) in self.stack:
+          print >> sys.stderr, e.f_code.co_name + ' ' + e.f_code.co_filename + ' ' + str(ln)
+        print >> sys.stderr, "top_frame", top_frame.f_code.co_name
+        '''
+
+
+        # don't trace inside of ANY functions that aren't user-written code
+        # (e.g., those from imported modules -- e.g., random, re -- or the
+        # __restricted_import__ function in this file)
+        #
+        # empirically, it seems like the FIRST entry in self.stack is
+        # the 'run' function from bdb.py, but everything else on the
+        # stack is the user program's "real stack"
+
+        # Look only at the "topmost" frame on the stack ...
+
+        # it seems like user-written code has a filename of '<string>',
+        # but maybe there are false positives too?
+        if self.canonic(top_frame.f_code.co_filename) != '<string>':
+          return
+        # also don't trace inside of the magic "constructor" code
+        if top_frame.f_code.co_name == '__new__':
+          return
+        # or __repr__, which is often called when running print statements
+        if top_frame.f_code.co_name == '__repr__':
+          return
+
+        # if top_frame.f_globals doesn't contain the sentinel '__OPT_toplevel__',
+        # then we're in another global scope altogether, so skip it!
+        # (this comes up in tests/backend-tests/namedtuple.txt)
+        if '__OPT_toplevel__' not in top_frame.f_globals:
+          return
+
+
+        # OLD CODE -- bail if any element on the stack matches these conditions
+        # note that the old code passes tests/backend-tests/namedtuple.txt
+        # but the new code above doesn't :/
+        '''
+        for (cur_frame, cur_line) in self.stack[1:]:
+          # it seems like user-written code has a filename of '<string>',
+          # but maybe there are false positives too?
+          if self.canonic(cur_frame.f_code.co_filename) != '<string>':
+            return
+          # also don't trace inside of the magic "constructor" code
+          if cur_frame.f_code.co_name == '__new__':
+            return
+          # or __repr__, which is often called when running print statements
+          if cur_frame.f_code.co_name == '__repr__':
+            return
+        '''
+
+
+        # don't trace if wait_for_return_stack is non-null ...
+        if self.wait_for_return_stack:
+          if event_type == 'return' and \
+             (self.wait_for_return_stack == self.get_stack_code_IDs()):
+            self.wait_for_return_stack = None # reset!
+          return # always bail!
+        else:
+          # Skip all "calls" that are actually class definitions, since
+          # those faux calls produce lots of ugly cruft in the trace.
+          #
+          # NB: Only trigger on calls to functions defined in
+          # user-written code (i.e., co_filename == '<string>'), but that
+          # should already be ensured by the above check for whether we're
+          # in user-written code.
+          if event_type == 'call':
+            func_line = self.get_script_line(top_frame.f_code.co_firstlineno)
+            if CLASS_RE.match(func_line.lstrip()): # ignore leading spaces
+              self.wait_for_return_stack = self.get_stack_code_IDs()
+              return
+
+
+        self.encoder.reset_heap() # VERY VERY VERY IMPORTANT,
+                                  # or else we won't properly capture heap object mutations in the trace!
+
+        if event_type == 'call':
+          # Don't be so strict about this assertion because it FAILS
+          # when you're calling a generator (not for the first time),
+          # since that frame has already previously been on the stack ...
+          #assert top_frame not in self.frame_ordered_ids
+
+          self.frame_ordered_ids[top_frame] = self.cur_frame_id
+          self.cur_frame_id += 1
+
+          if self.cumulative_mode:
+            self.zombie_frames.append(top_frame)
+
+
+        # only render zombie frames that are NO LONGER on the stack
+        #
+        # subtle: self.stack[:self.curindex+1] is the real stack, since
+        # everything after self.curindex+1 is beyond the top of the
+        # stack. this seems to be relevant only when there's an exception,
+        # since the ENTIRE stack is preserved but self.curindex
+        # starts decrementing as the exception bubbles up the stack.
+        cur_stack_frames = [e[0] for e in self.stack[:self.curindex+1]]
+        zombie_frames_to_render = [e for e in self.zombie_frames if e not in cur_stack_frames]
+
+
+        # each element is a pair of (function name, ENCODED locals dict)
+        encoded_stack_locals = []
+
+
+        # returns a dict with keys: function name, frame id, id of parent frame, encoded_locals dict
+        def create_encoded_stack_entry(cur_frame):
+          ret = {}
+
+
+          parent_frame_id_list = []
+
+          f = cur_frame
+          while True:
+            p = self.get_parent_frame(f)
+            if p:
+              pid = self.get_frame_id(p)
+              assert pid
+              parent_frame_id_list.append(pid)
+              f = p
+            else:
+              break
+
+
+          cur_name = cur_frame.f_code.co_name
+
+          if cur_name == '':
+            cur_name = 'unnamed function'
+
+          # augment lambdas with line number
+          if cur_name == '<lambda>':
+            cur_name += pg_encoder.create_lambda_line_number(cur_frame.f_code,
+                                                             self.encoder.line_to_lambda_code)
+
+          # encode in a JSON-friendly format now, in order to prevent ill
+          # effects of aliasing later down the line ...
+          encoded_locals = {}
+
+          for (k, v) in get_user_locals(cur_frame).items():
+            is_in_parent_frame = False
+
+            # don't display locals that appear in your parents' stack frames,
+            # since that's redundant
+            for pid in parent_frame_id_list:
+              parent_frame = self.lookup_zombie_frame_by_id(pid)
+              if k in parent_frame.f_locals:
+                # ignore __return__, which is never copied
+                if k != '__return__':
+                  # these values SHOULD BE ALIASES
+                  # (don't do an 'is' check since it might not fire for primitives)
+                  if parent_frame.f_locals[k] == v:
+                      is_in_parent_frame = True
+
+            if is_in_parent_frame and k not in cur_frame.f_code.co_varnames:
+              continue
+
+            # don't display some built-in locals ...
+            if k == '__module__':
+              continue
+
+            encoded_val = self.encoder.encode(v, self.get_parent_of_function)
+            encoded_locals[k] = encoded_val
+
+
+          # order the variable names in a sensible way:
+
+          # Let's start with co_varnames, since it (often) contains all
+          # variables in this frame, some of which might not exist yet.
+          ordered_varnames = []
+          for e in cur_frame.f_code.co_varnames:
+            if e in encoded_locals:
+              ordered_varnames.append(e)
+
+          # sometimes co_varnames doesn't contain all of the true local
+          # variables: e.g., when executing a 'class' definition.  in that
+          # case, iterate over encoded_locals and push them onto the end
+          # of ordered_varnames in alphabetical order
+          for e in sorted(encoded_locals.keys()):
+            if e != '__return__' and e not in ordered_varnames:
+              ordered_varnames.append(e)
+
+          # finally, put __return__ at the very end
+          if '__return__' in encoded_locals:
+            ordered_varnames.append('__return__')
+
+          # doctor Python 3 initializer to look like a normal function (denero)
+          if '__locals__' in encoded_locals:
+            ordered_varnames.remove('__locals__')
+            local = encoded_locals.pop('__locals__')
+            if encoded_locals.get('__return__', True) is None:
+              encoded_locals['__return__'] = local
+
+          # crucial sanity checks!
+          assert len(ordered_varnames) == len(encoded_locals)
+          for e in ordered_varnames:
+            assert e in encoded_locals
+
+          return dict(func_name=cur_name,
+                      is_parent=(cur_frame in self.parent_frames_set),
+                      frame_id=self.get_frame_id(cur_frame),
+                      parent_frame_id_list=parent_frame_id_list,
+                      encoded_locals=encoded_locals,
+                      ordered_varnames=ordered_varnames)
+
+
+        i = self.curindex
+
+        # look for whether a nested function has been defined during
+        # this particular call:
+        if i > 1: # i == 1 implies that there's only a global scope visible
+          for v in visit_all_locally_reachable_function_objs(top_frame):
+            if (v not in self.closures and \
+                v not in self.globally_defined_funcs):
+
+              # Look for the presence of the code object (v.func_code
+              # for Python 2 or v.__code__ for Python 3) in the
+              # constant pool (f_code.co_consts) of an enclosing
+              # stack frame, and set that frame as your parent.
+              #
+              # This technique properly handles lambdas passed as
+              # function parameters. e.g., this example:
+              #
+              # def foo(x):
+              #   bar(lambda y: x + y)
+              # def bar(a):
+              #   print a(20)
+              # foo(10)
+              chosen_parent_frame = None
+              # SUPER hacky but seems to work -- use reversed(self.stack)
+              # because we want to traverse starting from the TOP of the stack
+              # (most recent frame) and find the first frame containing
+              # a constant code object that matches v.__code__ or v.func_code
+              #
+              # required for this example from Berkeley CS61a:
+              #
+              # def f(p, k):
+              #     def g():
+              #         print(k)
+              #     if k == 0:
+              #         f(g, 1)
+              # f(None, 0)
+              #
+              # there are two calls to f, each of which defines a
+              # closure g that should point to the respective frame.
+              #
+              # note that for the second call to f, the parent of the
+              # g defined in there should be that frame, which is at
+              # the TOP of the stack. this reversed() hack does the
+              # right thing. note that if you don't traverse the stack
+              # backwards, then you will mistakenly get the parent as
+              # the FIRST f frame (bottom of the stack).
+              for (my_frame, my_lineno) in reversed(self.stack):
+                if chosen_parent_frame:
+                  break
+
+                for frame_const in my_frame.f_code.co_consts:
+                  if frame_const is (v.__code__ if is_python3 else v.func_code):
+                    chosen_parent_frame = my_frame
+                    break
+
+              # 2013-12-01 commented out this line so tests/backend-tests/papajohn-monster.txt
+              # works without an assertion failure ...
+              #assert chosen_parent_frame # I hope this always passes :0
+
+              # this condition should be False for functions declared in global scope ...
+              if chosen_parent_frame in self.frame_ordered_ids:
+                self.closures[v] = chosen_parent_frame
+                self.parent_frames_set.add(chosen_parent_frame) # unequivocally add to this set!!!
+                if not chosen_parent_frame in self.zombie_frames:
+                  self.zombie_frames.append(chosen_parent_frame)
+        else:
+          # if there is only a global scope visible ...
+          for (k, v) in get_user_globals(top_frame).items():
+            if (type(v) in (types.FunctionType, types.MethodType) and \
+                v not in self.closures):
+              self.globally_defined_funcs.add(v)
+
+
+        # climb up until you find '<module>', which is (hopefully) the global scope
+        while True:
+          cur_frame = self.stack[i][0]
+          cur_name = cur_frame.f_code.co_name
+          if cur_name == '<module>':
+            break
+
+          # do this check because in some cases, certain frames on the
+          # stack might NOT be tracked, so don't push a stack entry for
+          # those frames. this happens when you have a callback function
+          # in an imported module. e.g., your code:
+          #     def foo():
+          #         bar(baz)
+          #
+          #     def baz(): pass
+          #
+          # imported module code:
+          #     def bar(callback_func):
+          #         callback_func()
+          #
+          # when baz is executing, the real stack is [foo, bar, baz] but
+          # bar is in imported module code, so pg_logger doesn't trace
+          # it, and it doesn't show up in frame_ordered_ids. thus, the
+          # stack to render should only be [foo, baz].
+          if cur_frame in self.frame_ordered_ids:
+            encoded_stack_locals.append(create_encoded_stack_entry(cur_frame))
+          i -= 1
+
+        zombie_encoded_stack_locals = [create_encoded_stack_entry(e) for e in zombie_frames_to_render]
+
+
+        # encode in a JSON-friendly format now, in order to prevent ill
+        # effects of aliasing later down the line ...
+        encoded_globals = {}
+        for (k, v) in get_user_globals(tos[0], at_global_scope=(self.curindex <= 1)).items():
+          encoded_val = self.encoder.encode(v, self.get_parent_of_function)
+          encoded_globals[k] = encoded_val
+
+          if k not in self.all_globals_in_order:
+            self.all_globals_in_order.append(k)
+
+        # filter out globals that don't exist at this execution point
+        # (because they've been, say, deleted with 'del')
+        ordered_globals = [e for e in self.all_globals_in_order if e in encoded_globals]
+        assert len(ordered_globals) == len(encoded_globals)
+
+
+        # merge zombie_encoded_stack_locals and encoded_stack_locals
+        # into one master ordered list using some simple rules for
+        # making it look aesthetically pretty
+        stack_to_render = [];
+
+        # first push all regular stack entries
+        if encoded_stack_locals:
+          for e in encoded_stack_locals:
+            e['is_zombie'] = False
+            e['is_highlighted'] = False
+            stack_to_render.append(e)
+
+          # highlight the top-most active stack entry
+          stack_to_render[0]['is_highlighted'] = True
+
+
+        # now push all zombie stack entries
+        for e in zombie_encoded_stack_locals:
+          # don't display return value for zombie frames
+          # TODO: reconsider ...
+          '''
+          try:
+            e['ordered_varnames'].remove('__return__')
+          except ValueError:
+            pass
+          '''
+
+          e['is_zombie'] = True
+          e['is_highlighted'] = False # never highlight zombie entries
+
+          stack_to_render.append(e)
+
+        # now sort by frame_id since that sorts frames in "chronological
+        # order" based on the order they were invoked
+        stack_to_render.sort(key=lambda e: e['frame_id'])
+
+
+
+        # create a unique hash for this stack entry, so that the
+        # frontend can uniquely identify it when doing incremental
+        # rendering. the strategy is to use a frankenstein-like mix of the
+        # relevant fields to properly disambiguate closures and recursive
+        # calls to the same function
+        for e in stack_to_render:
+          hash_str = e['func_name']
+          # frame_id is UNIQUE, so it can disambiguate recursive calls
+          hash_str += '_f' + str(e['frame_id'])
+
+          # needed to refresh GUI display ...
+          if e['is_parent']:
+            hash_str += '_p'
+
+          # TODO: this is no longer needed, right? (since frame_id is unique)
+          #if e['parent_frame_id_list']:
+          #  hash_str += '_p' + '_'.join([str(i) for i in e['parent_frame_id_list']])
+          if e['is_zombie']:
+            hash_str += '_z'
+
+          e['unique_hash'] = hash_str
+
+
+        if self.show_only_outputs:
+          trace_entry = dict(line=lineno,
+                             event=event_type,
+                             func_name=tos[0].f_code.co_name,
+                             globals={},
+                             ordered_globals=[],
+                             stack_to_render=[],
+                             heap={},
+                             stdout=get_user_stdout(tos[0]))
+        else:
+          trace_entry = dict(line=lineno,
+                             event=event_type,
+                             func_name=tos[0].f_code.co_name,
+                             globals=encoded_globals,
+                             ordered_globals=ordered_globals,
+                             stack_to_render=stack_to_render,
+                             heap=self.encoder.get_heap(),
+                             stdout=get_user_stdout(tos[0]))
+
+        # optional column numbers for greater precision
+        # (only relevant in Py2crazy, a hacked CPython that supports column numbers)
+        if self.crazy_mode:
+          # at the very least, grab the column number
+          trace_entry['column'] = frame.f_colno
+
+          # now try to find start_col and extent
+          # (-1 is an invalid instruction index)
+          if frame.f_lasti >= 0:
+            key = (frame.f_code.co_code, frame.f_lineno, frame.f_colno,frame.f_lasti)
+            if key in self.bytecode_map:
+              v = self.bytecode_map[key]
+              trace_entry['expr_start_col'] = v.start_col
+              trace_entry['expr_width'] = v.extent
+              trace_entry['opcode'] = v.opcode
+
+
+        # TODO: refactor into a non-global
+        global __html__, __css__, __js__
+        if __html__:
+          trace_entry['html_output'] = __html__
+        if __css__:
+          trace_entry['css_output'] = __css__
+        if __js__:
+          trace_entry['js_output'] = __js__
+
+        # if there's an exception, then record its info:
+        if event_type == 'exception':
+          # always check in f_locals
+          exc = frame.f_locals['__exception__']
+          trace_entry['exception_msg'] = exc[0].__name__ + ': ' + str(exc[1])
+
+
+        # append to the trace only the breakpoint line and the next
+        # executed line, so that if you set only ONE breakpoint, OPT shows
+        # the state before and after that line gets executed.
+        append_to_trace = True
+        if self.breakpoints:
+          if not ((lineno in self.breakpoints) or (self.prev_lineno in self.breakpoints)):
+            append_to_trace = False
+
+          # TRICKY -- however, if there's an exception, then ALWAYS
+          # append it to the trace, so that the error can be displayed
+          if event_type == 'exception':
+            append_to_trace = True
+
+        self.prev_lineno = lineno
+
+        if append_to_trace:
+          self.trace.append(trace_entry)
+
+
+        # sanity check to make sure the state of the world at a 'call' instruction
+        # is identical to that at the instruction immediately following it ...
+        '''
+        if len(self.trace) > 1:
+          cur = self.trace[-1]
+          prev = self.trace[-2]
+          if prev['event'] == 'call':
+            assert cur['globals'] == prev['globals']
+            for (s1, s2) in zip(cur['stack_to_render'], prev['stack_to_render']):
+              assert s1 == s2
+            assert cur['heap'] == prev['heap']
+            assert cur['stdout'] == prev['stdout']
+        '''
+
+
+        if len(self.trace) >= MAX_EXECUTED_LINES:
+          self.trace.append(dict(event='instruction_limit_reached', exception_msg='(stopped after ' + str(MAX_EXECUTED_LINES) + ' steps to prevent possible infinite loop)'))
+          self.force_terminate()
+
+        self.forget()
+
+
+    def _runscript(self, script_str, custom_globals=None):
+        self.executed_script = script_str
+        self.executed_script_lines = self.executed_script.splitlines()
+
+        for (i, line) in enumerate(self.executed_script_lines):
+          line_no = i + 1
+          if line.endswith(BREAKPOINT_STR):
+            self.breakpoints.append(line_no)
+
+
+        # populate an extent map to get more accurate ranges from code
+        if self.crazy_mode:
+            # in Py2crazy standard library as Python-2.7.5/Lib/super_dis.py
+            import super_dis
+            try:
+                self.bytecode_map = super_dis.get_bytecode_map(self.executed_script)
+            except:
+                # failure oblivious
+                self.bytecode_map = {}
+
+
+        # When bdb sets tracing, a number of call and line events happens
+        # BEFORE debugger even reaches user's code (and the exact sequence of
+        # events depends on python version). So we take special measures to
+        # avoid stopping before we reach the main script (see user_line and
+        # user_call for details).
+        self._wait_for_mainpyfile = 1
+
+
+        # ok, let's try to sorta 'sandbox' the user script by not
+        # allowing certain potentially dangerous operations.
+        user_builtins = {}
+
+        # ugh, I can't figure out why in Python 2, __builtins__ seems to
+        # be a dict, but in Python 3, __builtins__ seems to be a module,
+        # so just handle both cases ... UGLY!
+        if type(__builtins__) is dict:
+          builtin_items = __builtins__.items()
+        else:
+          assert type(__builtins__) is types.ModuleType
+          builtin_items = []
+          for k in dir(__builtins__):
+            builtin_items.append((k, getattr(__builtins__, k)))
+
+        for (k, v) in builtin_items:
+          if k == 'raw_input':
+            user_builtins[k] = raw_input_wrapper
+          elif k == 'input' and is_python3:
+            # Python 3 input() is Python 2 raw_input()
+            user_builtins[k] = raw_input_wrapper
+          else:
+            user_builtins[k] = v
+
+        user_builtins['mouse_input'] = mouse_input_wrapper
+
+        # TODO: we can disable these imports here, but a crafty user can
+        # always get a hold of them by importing one of the external
+        # modules, so there's no point in trying security by obscurity
+        user_builtins['setHTML'] = setHTML
+        user_builtins['setCSS'] = setCSS
+        user_builtins['setJS'] = setJS
+
+        user_stdout = StringIO.StringIO()
+
+        sys.stdout = user_stdout
+
+        self.ORIGINAL_STDERR = sys.stderr
+
+        # don't do this, or else certain kinds of errors, such as syntax
+        # errors, will be silently ignored. WEIRD!
+        #sys.stderr = NullDevice # silence errors
+
+        user_globals = {"__name__"    : "__main__",
+                        "__builtins__" : user_builtins,
+                        "__user_stdout__" : user_stdout,
+                        # sentinel value for frames deriving from a top-level module
+                        "__OPT_toplevel__": True}
+
+        if custom_globals:
+            user_globals.update(custom_globals)
+
+        try:
+          self.run(script_str, user_globals, user_globals)
+        # sys.exit ...
+        except SystemExit:
+          #sys.exit(0)
+          raise bdb.BdbQuit
+        except:
+          if DEBUG:
+            traceback.print_exc()
+
+          trace_entry = dict(event='uncaught_exception')
+
+          (exc_type, exc_val, exc_tb) = sys.exc_info()
+          if hasattr(exc_val, 'lineno'):
+            trace_entry['line'] = exc_val.lineno
+          if hasattr(exc_val, 'offset'):
+            trace_entry['offset'] = exc_val.offset
+
+          trace_entry['exception_msg'] = type(exc_val).__name__ + ": " +  str(exc_val)
+
+          # SUPER SUBTLE! if ANY exception has already been recorded by
+          # the program, then DON'T record it again as an uncaught_exception.
+          # This looks kinda weird since the exact exception message doesn't
+          # need to match up, but in practice, there should be at most only
+          # ONE exception per trace.
+          already_caught = False
+          for e in self.trace:
+            if e['event'] == 'exception':
+              already_caught = True
+              break
+
+          if not already_caught:
+            if not self.done:
+              self.trace.append(trace_entry)
+
+          raise bdb.BdbQuit # need to forceably STOP execution
+
+
+    def force_terminate(self):
+      #self.finalize()
+      raise bdb.BdbQuit # need to forceably STOP execution
+
+
+    def finalize(self):
+      sys.stdout = self.GAE_STDOUT # very important!
+      sys.stderr = self.ORIGINAL_STDERR
+
+      assert len(self.trace) <= (MAX_EXECUTED_LINES + 1)
+
+      # don't do this anymore ...
+      '''
+      # filter all entries after 'return' from '<module>', since they
+      # seem extraneous:
+      res = []
+      for e in self.trace:
+        res.append(e)
+        if e['event'] == 'return' and e['func_name'] == '<module>':
+          break
+      '''
+
+      res = self.trace
+
+      # if the SECOND to last entry is an 'exception'
+      # and the last entry is return from <module>, then axe the last
+      # entry, for aesthetic reasons :)
+      if len(res) >= 2 and \
+         res[-2]['event'] == 'exception' and \
+         res[-1]['event'] == 'return' and res[-1]['func_name'] == '<module>':
+        res.pop()
+
+      self.trace = res
+
+      return self.finalizer_func(self.executed_script, self.trace)
+
+
+import json
+
+# the MAIN meaty function!!!
+def exec_script_str(script_str, raw_input_lst_json, options_json, finalizer_func):
+  options = json.loads(options_json)
+
+  py_crazy_mode = ('py_crazy_mode' in options and options['py_crazy_mode'])
+
+  logger = PGLogger(options['cumulative_mode'], options['heap_primitives'], options['show_only_outputs'], finalizer_func,
+                    crazy_mode=py_crazy_mode)
+
+  # TODO: refactor these NOT to be globals
+  global input_string_queue
+  input_string_queue = []
+  if raw_input_lst_json:
+    # TODO: if we want to support unicode, remove str() cast
+    input_string_queue = [str(e) for e in json.loads(raw_input_lst_json)]
+
+  global __html__, __css__, __js__
+  __html__, __css__, __js__ = None, None, None
+
+  try:
+    logger._runscript(script_str)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    logger.finalize()
+
+
+# disables security check and returns the result of finalizer_func
+# WARNING: ONLY RUN THIS LOCALLY and never over the web, since
+# security checks are disabled
+def exec_script_str_local(script_str, raw_input_lst_json, cumulative_mode, heap_primitives, finalizer_func):
+  # TODO: add py_crazy_mode option here too ...
+  logger = PGLogger(cumulative_mode, heap_primitives, False, finalizer_func, disable_security_checks=True)
+
+  # TODO: refactor these NOT to be globals
+  global input_string_queue
+  input_string_queue = []
+  if raw_input_lst_json:
+    # TODO: if we want to support unicode, remove str() cast
+    input_string_queue = [str(e) for e in json.loads(raw_input_lst_json)]
+
+  global __html__, __css__, __js__
+  __html__, __css__, __js__ = None, None, None
+
+  try:
+    logger._runscript(script_str)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    return logger.finalize()
+
+
+def exec_str_with_user_ns(script_str, user_ns, finalizer_func):
+  logger = PGLogger(False, False, False, finalizer_func, disable_security_checks=True)
+
+  global __html__, __css__, __js__
+  __html__, __css__, __js__ = None, None, None
+
+  try:
+    logger._runscript(script_str, user_ns)
+  except bdb.BdbQuit:
+    pass
+  finally:
+    return logger.finalize()
+
diff --git a/v4-cokapi/backends/ruby/create_trace.sh b/v4-cokapi/backends/ruby/create_trace.sh
new file mode 100755
index 000000000..285298121
--- /dev/null
+++ b/v4-cokapi/backends/ruby/create_trace.sh
@@ -0,0 +1,2 @@
+#!/bin/sh
+./ruby pg_logger.rb -t -f $1
diff --git a/v4-cokapi/backends/ruby/custom-ruby-interpreter/README.txt b/v4-cokapi/backends/ruby/custom-ruby-interpreter/README.txt
new file mode 100644
index 000000000..d5c602407
--- /dev/null
+++ b/v4-cokapi/backends/ruby/custom-ruby-interpreter/README.txt
@@ -0,0 +1,23 @@
+2015-07-07
+
+To build the custom Ruby interpreter - use ruby-2.2.2 in this directory:
+  tar -zxvf ruby-2.2.2.tar.gz
+  cp altered-files/* ruby-2.2.2/
+  cd ruby-2.2.2/
+  mkdir ../ruby-2.2.2-custom-OPT/
+  ./configure --prefix=`pwd`/../ruby-2.2.2-custom-OPT/
+  make
+  make install # don't forget this step!
+
+To recompile, run:
+  make install
+
+To run the hacked Ruby, run binaries in:
+  `pwd`/ruby-2.2.2-custom-OPT/bin/
+
+The binding object should now have a new frame_id field, which
+../pg_logger.rb needs
+
+e.g.,:
+  `pwd`/ruby-2.2.2-custom-OPT/bin/ruby pg_logger.rb tests/recursive-fact.rb
+
diff --git a/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/proc.c b/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/proc.c
new file mode 100644
index 000000000..1cc5b0ae6
--- /dev/null
+++ b/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/proc.c
@@ -0,0 +1,2845 @@
+/**********************************************************************
+
+  proc.c - Proc, Binding, Env
+
+  $Author: naruse $
+  created at: Wed Jan 17 12:13:14 2007
+
+  Copyright (C) 2004-2007 Koichi Sasada
+
+**********************************************************************/
+
+#include "eval_intern.h"
+#include "internal.h"
+#include "gc.h"
+#include "iseq.h"
+
+const NODE *rb_vm_cref_in_context(VALUE self, VALUE cbase);
+
+struct METHOD {
+    VALUE recv;
+    VALUE rclass;
+    VALUE defined_class;
+    ID id;
+    rb_method_entry_t *me;
+    struct unlinked_method_entry_list_entry *ume;
+};
+
+VALUE rb_cUnboundMethod;
+VALUE rb_cMethod;
+VALUE rb_cBinding;
+VALUE rb_cProc;
+
+static VALUE bmcall(VALUE, VALUE, int, VALUE *, VALUE);
+static int method_arity(VALUE);
+static int method_min_max_arity(VALUE, int *max);
+#define attached id__attached__
+
+/* Proc */
+
+#define IS_METHOD_PROC_NODE(node) (nd_type(node) == NODE_IFUNC && (node)->nd_cfnc == bmcall)
+
+static void
+proc_mark(void *ptr)
+{
+    rb_proc_t *proc = ptr;
+    RUBY_MARK_ENTER("proc");
+    RUBY_MARK_UNLESS_NULL(proc->envval);
+    RUBY_MARK_UNLESS_NULL(proc->blockprocval);
+    RUBY_MARK_UNLESS_NULL(proc->block.proc);
+    RUBY_MARK_UNLESS_NULL(proc->block.self);
+    if (proc->block.iseq && RUBY_VM_IFUNC_P(proc->block.iseq)) {
+	RUBY_MARK_UNLESS_NULL((VALUE)(proc->block.iseq));
+    }
+    RUBY_MARK_LEAVE("proc");
+}
+
+static size_t
+proc_memsize(const void *ptr)
+{
+    return sizeof(rb_proc_t);
+}
+
+static const rb_data_type_t proc_data_type = {
+    "proc",
+    {
+	proc_mark,
+	RUBY_TYPED_DEFAULT_FREE,
+	proc_memsize,
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+VALUE
+rb_proc_wrap(VALUE klass, rb_proc_t *proc)
+{
+    proc->block.proc = TypedData_Wrap_Struct(klass, &proc_data_type, proc);
+
+    return proc->block.proc;
+}
+
+VALUE
+rb_obj_is_proc(VALUE proc)
+{
+    if (rb_typeddata_is_kind_of(proc, &proc_data_type)) {
+	return Qtrue;
+    }
+    else {
+	return Qfalse;
+    }
+}
+
+/* :nodoc: */
+static VALUE
+proc_dup(VALUE self)
+{
+    VALUE procval;
+    rb_proc_t *src;
+    rb_proc_t *dst = ALLOC(rb_proc_t);
+
+    GetProcPtr(self, src);
+    *dst = *src;
+    procval = rb_proc_wrap(rb_cProc, dst);
+    RB_GC_GUARD(self); /* for: body = proc_dup(body) */
+
+    return procval;
+}
+
+/* :nodoc: */
+static VALUE
+proc_clone(VALUE self)
+{
+    VALUE procval = proc_dup(self);
+    CLONESETUP(procval, self);
+    return procval;
+}
+
+/*
+ * call-seq:
+ *   prc.lambda? -> true or false
+ *
+ * Returns +true+ for a Proc object for which argument handling is rigid.
+ * Such procs are typically generated by +lambda+.
+ *
+ * A Proc object generated by +proc+ ignores extra arguments.
+ *
+ *   proc {|a,b| [a,b] }.call(1,2,3)    #=> [1,2]
+ *
+ * It provides +nil+ for missing arguments.
+ *
+ *   proc {|a,b| [a,b] }.call(1)        #=> [1,nil]
+ *
+ * It expands a single array argument.
+ *
+ *   proc {|a,b| [a,b] }.call([1,2])    #=> [1,2]
+ *
+ * A Proc object generated by +lambda+ doesn't have such tricks.
+ *
+ *   lambda {|a,b| [a,b] }.call(1,2,3)  #=> ArgumentError
+ *   lambda {|a,b| [a,b] }.call(1)      #=> ArgumentError
+ *   lambda {|a,b| [a,b] }.call([1,2])  #=> ArgumentError
+ *
+ * Proc#lambda? is a predicate for the tricks.
+ * It returns +true+ if no tricks apply.
+ *
+ *   lambda {}.lambda?            #=> true
+ *   proc {}.lambda?              #=> false
+ *
+ * Proc.new is the same as +proc+.
+ *
+ *   Proc.new {}.lambda?          #=> false
+ *
+ * +lambda+, +proc+ and Proc.new preserve the tricks of
+ * a Proc object given by <code>&</code> argument.
+ *
+ *   lambda(&lambda {}).lambda?   #=> true
+ *   proc(&lambda {}).lambda?     #=> true
+ *   Proc.new(&lambda {}).lambda? #=> true
+ *
+ *   lambda(&proc {}).lambda?     #=> false
+ *   proc(&proc {}).lambda?       #=> false
+ *   Proc.new(&proc {}).lambda?   #=> false
+ *
+ * A Proc object generated by <code>&</code> argument has the tricks
+ *
+ *   def n(&b) b.lambda? end
+ *   n {}                         #=> false
+ *
+ * The <code>&</code> argument preserves the tricks if a Proc object
+ * is given by <code>&</code> argument.
+ *
+ *   n(&lambda {})                #=> true
+ *   n(&proc {})                  #=> false
+ *   n(&Proc.new {})              #=> false
+ *
+ * A Proc object converted from a method has no tricks.
+ *
+ *   def m() end
+ *   method(:m).to_proc.lambda?   #=> true
+ *
+ *   n(&method(:m))               #=> true
+ *   n(&method(:m).to_proc)       #=> true
+ *
+ * +define_method+ is treated the same as method definition.
+ * The defined method has no tricks.
+ *
+ *   class C
+ *     define_method(:d) {}
+ *   end
+ *   C.new.d(1,2)       #=> ArgumentError
+ *   C.new.method(:d).to_proc.lambda?   #=> true
+ *
+ * +define_method+ always defines a method without the tricks,
+ * even if a non-lambda Proc object is given.
+ * This is the only exception for which the tricks are not preserved.
+ *
+ *   class C
+ *     define_method(:e, &proc {})
+ *   end
+ *   C.new.e(1,2)       #=> ArgumentError
+ *   C.new.method(:e).to_proc.lambda?   #=> true
+ *
+ * This exception insures that methods never have tricks
+ * and makes it easy to have wrappers to define methods that behave as usual.
+ *
+ *   class C
+ *     def self.def2(name, &body)
+ *       define_method(name, &body)
+ *     end
+ *
+ *     def2(:f) {}
+ *   end
+ *   C.new.f(1,2)       #=> ArgumentError
+ *
+ * The wrapper <i>def2</i> defines a method which has no tricks.
+ *
+ */
+
+VALUE
+rb_proc_lambda_p(VALUE procval)
+{
+    rb_proc_t *proc;
+    GetProcPtr(procval, proc);
+
+    return proc->is_lambda ? Qtrue : Qfalse;
+}
+
+/* Binding */
+
+static void
+binding_free(void *ptr)
+{
+    rb_binding_t *bind;
+    RUBY_FREE_ENTER("binding");
+    if (ptr) {
+	bind = ptr;
+	ruby_xfree(bind);
+    }
+    RUBY_FREE_LEAVE("binding");
+}
+
+static void
+binding_mark(void *ptr)
+{
+    rb_binding_t *bind;
+    RUBY_MARK_ENTER("binding");
+    if (ptr) {
+	bind = ptr;
+	RUBY_MARK_UNLESS_NULL(bind->env);
+	RUBY_MARK_UNLESS_NULL(bind->path);
+	RUBY_MARK_UNLESS_NULL(bind->blockprocval);
+    }
+    RUBY_MARK_LEAVE("binding");
+}
+
+static size_t
+binding_memsize(const void *ptr)
+{
+    return ptr ? sizeof(rb_binding_t) : 0;
+}
+
+const rb_data_type_t ruby_binding_data_type = {
+    "binding",
+    {
+	binding_mark,
+	binding_free,
+	binding_memsize,
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+VALUE
+rb_binding_alloc(VALUE klass)
+{
+    VALUE obj;
+    rb_binding_t *bind;
+    obj = TypedData_Make_Struct(klass, rb_binding_t, &ruby_binding_data_type, bind);
+    return obj;
+}
+
+/* :nodoc: */
+static VALUE
+binding_dup(VALUE self)
+{
+    VALUE bindval = rb_binding_alloc(rb_cBinding);
+    rb_binding_t *src, *dst;
+    GetBindingPtr(self, src);
+    GetBindingPtr(bindval, dst);
+    dst->env = src->env;
+    dst->path = src->path;
+    dst->blockprocval = src->blockprocval;
+    dst->first_lineno = src->first_lineno;
+    return bindval;
+}
+
+/* :nodoc: */
+static VALUE
+binding_clone(VALUE self)
+{
+    VALUE bindval = binding_dup(self);
+    CLONESETUP(bindval, self);
+    return bindval;
+}
+
+VALUE
+rb_binding_new(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    return rb_vm_make_binding(th, th->cfp);
+}
+
+/*
+ *  call-seq:
+ *     binding -> a_binding
+ *
+ *  Returns a +Binding+ object, describing the variable and
+ *  method bindings at the point of call. This object can be used when
+ *  calling +eval+ to execute the evaluated command in this
+ *  environment. See also the description of class +Binding+.
+ *
+ *     def get_binding(param)
+ *       return binding
+ *     end
+ *     b = get_binding("hello")
+ *     eval("param", b)   #=> "hello"
+ */
+
+static VALUE
+rb_f_binding(VALUE self)
+{
+    return rb_binding_new();
+}
+
+/*
+ *  call-seq:
+ *     binding.eval(string [, filename [,lineno]])  -> obj
+ *
+ *  Evaluates the Ruby expression(s) in <em>string</em>, in the
+ *  <em>binding</em>'s context.  If the optional <em>filename</em> and
+ *  <em>lineno</em> parameters are present, they will be used when
+ *  reporting syntax errors.
+ *
+ *     def get_binding(param)
+ *       return binding
+ *     end
+ *     b = get_binding("hello")
+ *     b.eval("param")   #=> "hello"
+ */
+
+static VALUE
+bind_eval(int argc, VALUE *argv, VALUE bindval)
+{
+    VALUE args[4];
+
+    rb_scan_args(argc, argv, "12", &args[0], &args[2], &args[3]);
+    args[1] = bindval;
+    return rb_f_eval(argc+1, args, Qnil /* self will be searched in eval */);
+}
+
+static VALUE *
+get_local_variable_ptr(VALUE envval, ID lid)
+{
+    rb_env_t *env;
+
+    do {
+	const rb_iseq_t *iseq;
+	int i;
+
+	GetEnvPtr(envval, env);
+	iseq = env->block.iseq;
+
+	for (i=0; i<iseq->local_table_size; i++) {
+	    if (iseq->local_table[i] == lid) {
+		return &env->env[i];
+	    }
+	}
+    } while ((envval = env->prev_envval) != 0);
+
+    return 0;
+}
+
+/*
+ * check local variable name.
+ * returns ID if it's an already interned symbol, or 0 with setting
+ * local name in String to *namep.
+ */
+static ID
+check_local_id(VALUE bindval, volatile VALUE *pname)
+{
+    ID lid = rb_check_id(pname);
+    VALUE name = *pname, sym = name;
+
+    if (lid) {
+	if (!rb_is_local_id(lid)) {
+	    name = rb_id2str(lid);
+	  wrong:
+	    rb_name_error_str(sym, "wrong local variable name `% "PRIsVALUE"' for %"PRIsVALUE,
+			      name, bindval);
+	}
+    }
+    else {
+	if (!rb_is_local_name(sym)) goto wrong;
+	return 0;
+    }
+    return lid;
+}
+
+/*
+ *  call-seq:
+ *     binding.local_variables -> Array
+ *
+ *  Returns the +symbol+ names of the binding's local variables
+ *
+ *	def foo
+ *  	  a = 1
+ *  	  2.times do |n|
+ *  	    binding.local_variables #=> [:a, :n]
+ *  	  end
+ *  	end
+ *
+ *  This method is short version of the following code.
+ *
+ *	binding.eval("local_variables")
+ *
+ */
+static VALUE
+bind_local_variables(VALUE bindval)
+{
+    const rb_binding_t *bind;
+
+    GetBindingPtr(bindval, bind);
+    return rb_vm_env_local_variables(bind->env);
+}
+
+// pgbovine
+static VALUE
+bind_cfp_get(VALUE bindval, VALUE sym)
+{
+    const rb_binding_t *bind;
+    GetBindingPtr(bindval, bind);
+    return INT2FIX(bind->cfp);
+}
+
+
+/*
+ *  call-seq:
+ *     binding.local_variable_get(symbol) -> obj
+ *
+ *  Returns a +value+ of local variable +symbol+.
+ *
+ *	def foo
+ *  	  a = 1
+ *  	  binding.local_variable_get(:a) #=> 1
+ *  	  binding.local_variable_get(:b) #=> NameError
+ *  	end
+ *
+ *  This method is short version of the following code.
+ *
+ *	binding.eval("#{symbol}")
+ *
+ */
+static VALUE
+bind_local_variable_get(VALUE bindval, VALUE sym)
+{
+    ID lid = check_local_id(bindval, &sym);
+    const rb_binding_t *bind;
+    const VALUE *ptr;
+
+    if (!lid) goto undefined;
+
+    GetBindingPtr(bindval, bind);
+
+    if ((ptr = get_local_variable_ptr(bind->env, lid)) == NULL) {
+      undefined:
+	rb_name_error_str(sym, "local variable `%"PRIsVALUE"' not defined for %"PRIsVALUE,
+			  sym, bindval);
+    }
+
+    return *ptr;
+}
+
+/*
+ *  call-seq:
+ *     binding.local_variable_set(symbol, obj) -> obj
+ *
+ *  Set local variable named +symbol+ as +obj+.
+ *
+ *	def foo
+ *  	  a = 1
+ *  	  b = binding
+ *  	  b.local_variable_set(:a, 2) # set existing local variable `a'
+ *  	  b.local_variable_set(:b, 3) # create new local variable `b'
+ *  	                              # `b' exists only in binding.
+ *  	  b.local_variable_get(:a) #=> 2
+ *  	  b.local_variable_get(:b) #=> 3
+ *  	  p a #=> 2
+ *  	  p b #=> NameError
+ *  	end
+ *
+ *  This method is a similar behavior of the following code
+ *
+ *    binding.eval("#{symbol} = #{obj}")
+ *
+ *  if obj can be dumped in Ruby code.
+ */
+static VALUE
+bind_local_variable_set(VALUE bindval, VALUE sym, VALUE val)
+{
+    ID lid = check_local_id(bindval, &sym);
+    rb_binding_t *bind;
+    VALUE *ptr;
+
+    if (!lid) lid = rb_intern_str(sym);
+
+    GetBindingPtr(bindval, bind);
+    if ((ptr = get_local_variable_ptr(bind->env, lid)) == NULL) {
+	/* not found. create new env */
+	ptr = rb_binding_add_dynavars(bind, 1, &lid);
+    }
+
+    *ptr = val;
+
+    return val;
+}
+
+/*
+ *  call-seq:
+ *     binding.local_variable_defined?(symbol) -> obj
+ *
+ *  Returns a +true+ if a local variable +symbol+ exists.
+ *
+ *	def foo
+ *  	  a = 1
+ *  	  binding.local_variable_defined?(:a) #=> true
+ *  	  binding.local_variable_defined?(:b) #=> false
+ *  	end
+ *
+ *  This method is short version of the following code.
+ *
+ *	binding.eval("defined?(#{symbol}) == 'local-variable'")
+ *
+ */
+static VALUE
+bind_local_variable_defined_p(VALUE bindval, VALUE sym)
+{
+    ID lid = check_local_id(bindval, &sym);
+    const rb_binding_t *bind;
+
+    if (!lid) return Qfalse;
+
+    GetBindingPtr(bindval, bind);
+    return get_local_variable_ptr(bind->env, lid) ? Qtrue : Qfalse;
+}
+
+/*
+ *  call-seq:
+ *     binding.receiver    -> object
+ *
+ *  Returns the bound receiver of the binding object.
+ */
+static VALUE
+bind_receiver(VALUE bindval)
+{
+    const rb_binding_t *bind;
+    const rb_env_t *env;
+
+    GetBindingPtr(bindval, bind);
+    GetEnvPtr(bind->env, env);
+    return env->block.self;
+}
+
+static VALUE
+proc_new(VALUE klass, int8_t is_lambda)
+{
+    VALUE procval = Qnil;
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = th->cfp;
+    rb_block_t *block;
+
+    if (!(block = rb_vm_control_frame_block_ptr(cfp))) {
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+
+	if ((block = rb_vm_control_frame_block_ptr(cfp)) != 0) {
+	    if (is_lambda) {
+		rb_warn("tried to create Proc object without a block");
+	    }
+	}
+	else {
+	    rb_raise(rb_eArgError,
+		     "tried to create Proc object without a block");
+	}
+    }
+
+    procval = block->proc;
+
+    if (procval) {
+	if (RBASIC(procval)->klass == klass) {
+	    return procval;
+	}
+	else {
+	    VALUE newprocval = proc_dup(procval);
+	    RBASIC_SET_CLASS(newprocval, klass);
+	    return newprocval;
+	}
+    }
+
+    procval = rb_vm_make_proc_lambda(th, block, klass, is_lambda);
+    return procval;
+}
+
+/*
+ *  call-seq:
+ *     Proc.new {|...| block } -> a_proc
+ *     Proc.new                -> a_proc
+ *
+ *  Creates a new <code>Proc</code> object, bound to the current
+ *  context. <code>Proc::new</code> may be called without a block only
+ *  within a method with an attached block, in which case that block is
+ *  converted to the <code>Proc</code> object.
+ *
+ *     def proc_from
+ *       Proc.new
+ *     end
+ *     proc = proc_from { "hello" }
+ *     proc.call   #=> "hello"
+ */
+
+static VALUE
+rb_proc_s_new(int argc, VALUE *argv, VALUE klass)
+{
+    VALUE block = proc_new(klass, FALSE);
+
+    rb_obj_call_init(block, argc, argv);
+    return block;
+}
+
+/*
+ * call-seq:
+ *   proc   { |...| block }  -> a_proc
+ *
+ * Equivalent to <code>Proc.new</code>.
+ */
+
+VALUE
+rb_block_proc(void)
+{
+    return proc_new(rb_cProc, FALSE);
+}
+
+/*
+ * call-seq:
+ *   lambda { |...| block }  -> a_proc
+ *
+ * Equivalent to <code>Proc.new</code>, except the resulting Proc objects
+ * check the number of parameters passed when called.
+ */
+
+VALUE
+rb_block_lambda(void)
+{
+    return proc_new(rb_cProc, TRUE);
+}
+
+VALUE
+rb_block_clear_env_self(VALUE proc)
+{
+    rb_proc_t *po;
+    rb_env_t *env;
+    GetProcPtr(proc, po);
+    GetEnvPtr(po->envval, env);
+    env->env[0] = Qnil;
+    return proc;
+}
+
+/*  Document-method: ===
+ *
+ *  call-seq:
+ *     proc === obj   -> result_of_proc
+ *
+ *  Invokes the block with +obj+ as the proc's parameter like Proc#call.  It
+ *  is to allow a proc object to be a target of +when+ clause in a case
+ *  statement.
+ */
+
+/* CHECKME: are the argument checking semantics correct? */
+
+/*
+ *  call-seq:
+ *     prc.call(params,...)   -> obj
+ *     prc[params,...]        -> obj
+ *     prc.(params,...)       -> obj
+ *
+ *  Invokes the block, setting the block's parameters to the values in
+ *  <i>params</i> using something close to method calling semantics.
+ *  Generates a warning if multiple values are passed to a proc that
+ *  expects just one (previously this silently converted the parameters
+ *  to an array).  Note that prc.() invokes prc.call() with the parameters
+ *  given.  It's a syntax sugar to hide "call".
+ *
+ *  For procs created using <code>lambda</code> or <code>->()</code> an error
+ *  is generated if the wrong number of parameters are passed to a Proc with
+ *  multiple parameters.  For procs created using <code>Proc.new</code> or
+ *  <code>Kernel.proc</code>, extra parameters are silently discarded.
+ *
+ *  Returns the value of the last expression evaluated in the block. See
+ *  also <code>Proc#yield</code>.
+ *
+ *     a_proc = Proc.new {|a, *b| b.collect {|i| i*a }}
+ *     a_proc.call(9, 1, 2, 3)   #=> [9, 18, 27]
+ *     a_proc[9, 1, 2, 3]        #=> [9, 18, 27]
+ *     a_proc = lambda {|a,b| a}
+ *     a_proc.call(1,2,3)
+ *
+ *  <em>produces:</em>
+ *
+ *     prog.rb:4:in `block in <main>': wrong number of arguments (3 for 2) (ArgumentError)
+ *     	from prog.rb:5:in `call'
+ *     	from prog.rb:5:in `<main>'
+ *
+ */
+
+static VALUE
+proc_call(int argc, VALUE *argv, VALUE procval)
+{
+    VALUE vret;
+    rb_proc_t *proc;
+    rb_block_t *blockptr = 0;
+    rb_iseq_t *iseq;
+    VALUE passed_procval;
+    GetProcPtr(procval, proc);
+
+    iseq = proc->block.iseq;
+    if (BUILTIN_TYPE(iseq) == T_NODE || iseq->param.flags.has_block) {
+	if (rb_block_given_p()) {
+	    rb_proc_t *passed_proc;
+	    RB_GC_GUARD(passed_procval) = rb_block_proc();
+	    GetProcPtr(passed_procval, passed_proc);
+	    blockptr = &passed_proc->block;
+	}
+    }
+
+    vret = rb_vm_invoke_proc(GET_THREAD(), proc, argc, argv, blockptr);
+    RB_GC_GUARD(procval);
+    return vret;
+}
+
+#if SIZEOF_LONG > SIZEOF_INT
+static inline int
+check_argc(long argc)
+{
+    if (argc > INT_MAX || argc < 0) {
+	rb_raise(rb_eArgError, "too many arguments (%lu)",
+		 (unsigned long)argc);
+    }
+    return (int)argc;
+}
+#else
+#define check_argc(argc) (argc)
+#endif
+
+VALUE
+rb_proc_call(VALUE self, VALUE args)
+{
+    VALUE vret;
+    rb_proc_t *proc;
+    GetProcPtr(self, proc);
+    vret = rb_vm_invoke_proc(GET_THREAD(), proc, check_argc(RARRAY_LEN(args)), RARRAY_CONST_PTR(args), 0);
+    RB_GC_GUARD(self);
+    RB_GC_GUARD(args);
+    return vret;
+}
+
+VALUE
+rb_proc_call_with_block(VALUE self, int argc, const VALUE *argv, VALUE pass_procval)
+{
+    VALUE vret;
+    rb_proc_t *proc;
+    rb_block_t *block = 0;
+    GetProcPtr(self, proc);
+
+    if (!NIL_P(pass_procval)) {
+	rb_proc_t *pass_proc;
+	GetProcPtr(pass_procval, pass_proc);
+	block = &pass_proc->block;
+    }
+
+    vret = rb_vm_invoke_proc(GET_THREAD(), proc, argc, argv, block);
+    RB_GC_GUARD(self);
+    RB_GC_GUARD(pass_procval);
+    return vret;
+}
+
+
+/*
+ *  call-seq:
+ *     prc.arity -> fixnum
+ *
+ *  Returns the number of mandatory arguments. If the block
+ *  is declared to take no arguments, returns 0. If the block is known
+ *  to take exactly n arguments, returns n.
+ *  If the block has optional arguments, returns -n-1, where n is the
+ *  number of mandatory arguments, with the exception for blocks that
+ *  are not lambdas and have only a finite number of optional arguments;
+ *  in this latter case, returns n.
+ *  Keywords arguments will considered as a single additional argument,
+ *  that argument being mandatory if any keyword argument is mandatory.
+ *  A <code>proc</code> with no argument declarations
+ *  is the same as a block declaring <code>||</code> as its arguments.
+ *
+ *     proc {}.arity                  #=>  0
+ *     proc { || }.arity              #=>  0
+ *     proc { |a| }.arity             #=>  1
+ *     proc { |a, b| }.arity          #=>  2
+ *     proc { |a, b, c| }.arity       #=>  3
+ *     proc { |*a| }.arity            #=> -1
+ *     proc { |a, *b| }.arity         #=> -2
+ *     proc { |a, *b, c| }.arity      #=> -3
+ *     proc { |x:, y:, z:0| }.arity   #=>  1
+ *     proc { |*a, x:, y:0| }.arity   #=> -2
+ *
+ *     proc   { |x=0| }.arity         #=>  0
+ *     lambda { |x=0| }.arity         #=> -1
+ *     proc   { |x=0, y| }.arity      #=>  1
+ *     lambda { |x=0, y| }.arity      #=> -2
+ *     proc   { |x=0, y=0| }.arity    #=>  0
+ *     lambda { |x=0, y=0| }.arity    #=> -1
+ *     proc   { |x, y=0| }.arity      #=>  1
+ *     lambda { |x, y=0| }.arity      #=> -2
+ *     proc   { |(x, y), z=0| }.arity #=>  1
+ *     lambda { |(x, y), z=0| }.arity #=> -2
+ *     proc   { |a, x:0, y:0| }.arity #=>  1
+ *     lambda { |a, x:0, y:0| }.arity #=> -2
+ */
+
+static VALUE
+proc_arity(VALUE self)
+{
+    int arity = rb_proc_arity(self);
+    return INT2FIX(arity);
+}
+
+static inline int
+rb_iseq_min_max_arity(const rb_iseq_t *iseq, int *max)
+{
+    *max = iseq->param.flags.has_rest == FALSE ?
+      iseq->param.lead_num + iseq->param.opt_num + iseq->param.post_num +
+      (iseq->param.flags.has_kw == TRUE || iseq->param.flags.has_kwrest == TRUE)
+      : UNLIMITED_ARGUMENTS;
+    return iseq->param.lead_num + iseq->param.post_num + (iseq->param.flags.has_kw && iseq->param.keyword->required_num > 0);
+}
+
+static int
+rb_block_min_max_arity(rb_block_t *block, int *max)
+{
+    rb_iseq_t *iseq = block->iseq;
+    if (iseq) {
+	if (BUILTIN_TYPE(iseq) != T_NODE) {
+	    return rb_iseq_min_max_arity(iseq, max);
+	}
+	else {
+	    NODE *node = (NODE *)iseq;
+	    if (IS_METHOD_PROC_NODE(node)) {
+		/* e.g. method(:foo).to_proc.arity */
+		return method_min_max_arity(node->nd_tval, max);
+	    }
+	}
+    }
+    *max = UNLIMITED_ARGUMENTS;
+    return 0;
+}
+
+/*
+ * Returns the number of required parameters and stores the maximum
+ * number of parameters in max, or UNLIMITED_ARGUMENTS if no max.
+ * For non-lambda procs, the maximum is the number of non-ignored
+ * parameters even though there is no actual limit to the number of parameters
+ */
+static int
+rb_proc_min_max_arity(VALUE self, int *max)
+{
+    rb_proc_t *proc;
+    rb_block_t *block;
+    GetProcPtr(self, proc);
+    block = &proc->block;
+    return rb_block_min_max_arity(block, max);
+}
+
+int
+rb_proc_arity(VALUE self)
+{
+    rb_proc_t *proc;
+    int max, min = rb_proc_min_max_arity(self, &max);
+    GetProcPtr(self, proc);
+    return (proc->is_lambda ? min == max : max != UNLIMITED_ARGUMENTS) ? min : -min-1;
+}
+
+int
+rb_block_arity(void)
+{
+    int min, max;
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = th->cfp;
+    rb_block_t *block = rb_vm_control_frame_block_ptr(cfp);
+    VALUE proc_value;
+
+    if (!block) rb_raise(rb_eArgError, "no block given");
+    min = rb_block_min_max_arity(block, &max);
+    proc_value = block->proc;
+    if (proc_value) {
+	rb_proc_t *proc;
+	GetProcPtr(proc_value, proc);
+	if (proc)
+	    return (proc->is_lambda ? min == max : max != UNLIMITED_ARGUMENTS) ? min : -min-1;
+    }
+    return max != UNLIMITED_ARGUMENTS ? min : -min-1;
+}
+
+#define get_proc_iseq rb_proc_get_iseq
+
+rb_iseq_t *
+rb_proc_get_iseq(VALUE self, int *is_proc)
+{
+    rb_proc_t *proc;
+    rb_iseq_t *iseq;
+
+    GetProcPtr(self, proc);
+    iseq = proc->block.iseq;
+    if (is_proc) *is_proc = !proc->is_lambda;
+    if (!RUBY_VM_NORMAL_ISEQ_P(iseq)) {
+	NODE *node = (NODE *)iseq;
+	iseq = 0;
+	if (IS_METHOD_PROC_NODE(node)) {
+	    /* method(:foo).to_proc */
+	    iseq = rb_method_get_iseq(node->nd_tval);
+	    if (is_proc) *is_proc = 0;
+	}
+    }
+    return iseq;
+}
+
+static VALUE
+iseq_location(rb_iseq_t *iseq)
+{
+    VALUE loc[2];
+
+    if (!iseq) return Qnil;
+    loc[0] = iseq->location.path;
+    if (iseq->line_info_table) {
+	loc[1] = rb_iseq_first_lineno(iseq->self);
+    }
+    else {
+	loc[1] = Qnil;
+    }
+    return rb_ary_new4(2, loc);
+}
+
+/*
+ * call-seq:
+ *    prc.source_location  -> [String, Fixnum]
+ *
+ * Returns the Ruby source filename and line number containing this proc
+ * or +nil+ if this proc was not defined in Ruby (i.e. native)
+ */
+
+VALUE
+rb_proc_location(VALUE self)
+{
+    return iseq_location(get_proc_iseq(self, 0));
+}
+
+static VALUE
+unnamed_parameters(int arity)
+{
+    VALUE a, param = rb_ary_new2((arity < 0) ? -arity : arity);
+    int n = (arity < 0) ? ~arity : arity;
+    ID req, rest;
+    CONST_ID(req, "req");
+    a = rb_ary_new3(1, ID2SYM(req));
+    OBJ_FREEZE(a);
+    for (; n; --n) {
+	rb_ary_push(param, a);
+    }
+    if (arity < 0) {
+	CONST_ID(rest, "rest");
+	rb_ary_store(param, ~arity, rb_ary_new3(1, ID2SYM(rest)));
+    }
+    return param;
+}
+
+/*
+ * call-seq:
+ *    prc.parameters  -> array
+ *
+ * Returns the parameter information of this proc.
+ *
+ *    prc = lambda{|x, y=42, *other|}
+ *    prc.parameters  #=> [[:req, :x], [:opt, :y], [:rest, :other]]
+ */
+
+static VALUE
+rb_proc_parameters(VALUE self)
+{
+    int is_proc;
+    rb_iseq_t *iseq = get_proc_iseq(self, &is_proc);
+    if (!iseq) {
+	return unnamed_parameters(rb_proc_arity(self));
+    }
+    return rb_iseq_parameters(iseq, is_proc);
+}
+
+st_index_t
+rb_hash_proc(st_index_t hash, VALUE prc)
+{
+    rb_proc_t *proc;
+    GetProcPtr(prc, proc);
+    hash = rb_hash_uint(hash, (st_index_t)proc->block.iseq);
+    hash = rb_hash_uint(hash, (st_index_t)proc->envval);
+    return rb_hash_uint(hash, (st_index_t)proc->block.ep >> 16);
+}
+
+/*
+ * call-seq:
+ *   prc.hash   ->  integer
+ *
+ * Returns a hash value corresponding to proc body.
+ *
+ * See also Object#hash.
+ */
+
+static VALUE
+proc_hash(VALUE self)
+{
+    st_index_t hash;
+    hash = rb_hash_start(0);
+    hash = rb_hash_proc(hash, self);
+    hash = rb_hash_end(hash);
+    return LONG2FIX(hash);
+}
+
+/*
+ * call-seq:
+ *   prc.to_s   -> string
+ *
+ * Returns the unique identifier for this proc, along with
+ * an indication of where the proc was defined.
+ */
+
+static VALUE
+proc_to_s(VALUE self)
+{
+    VALUE str = 0;
+    rb_proc_t *proc;
+    const char *cname = rb_obj_classname(self);
+    rb_iseq_t *iseq;
+    const char *is_lambda;
+
+    GetProcPtr(self, proc);
+    iseq = proc->block.iseq;
+    is_lambda = proc->is_lambda ? " (lambda)" : "";
+
+    if (RUBY_VM_NORMAL_ISEQ_P(iseq)) {
+	int first_lineno = 0;
+
+	if (iseq->line_info_table) {
+	    first_lineno = FIX2INT(rb_iseq_first_lineno(iseq->self));
+	}
+	str = rb_sprintf("#<%s:%p@%"PRIsVALUE":%d%s>", cname, (void *)self,
+			 iseq->location.path, first_lineno, is_lambda);
+    }
+    else {
+	str = rb_sprintf("#<%s:%p%s>", cname, (void *)proc->block.iseq,
+			 is_lambda);
+    }
+
+    if (OBJ_TAINTED(self)) {
+	OBJ_TAINT(str);
+    }
+    return str;
+}
+
+/*
+ *  call-seq:
+ *     prc.to_proc -> proc
+ *
+ *  Part of the protocol for converting objects to <code>Proc</code>
+ *  objects. Instances of class <code>Proc</code> simply return
+ *  themselves.
+ */
+
+static VALUE
+proc_to_proc(VALUE self)
+{
+    return self;
+}
+
+static void
+bm_mark(void *ptr)
+{
+    struct METHOD *data = ptr;
+    rb_gc_mark(data->defined_class);
+    rb_gc_mark(data->rclass);
+    rb_gc_mark(data->recv);
+    if (data->me) rb_mark_method_entry(data->me);
+}
+
+static void
+bm_free(void *ptr)
+{
+    struct METHOD *data = ptr;
+    struct unlinked_method_entry_list_entry *ume = data->ume;
+    data->me->mark = 0;
+    ume->me = data->me;
+    ume->next = GET_VM()->unlinked_method_entry_list;
+    GET_VM()->unlinked_method_entry_list = ume;
+    xfree(ptr);
+}
+
+static size_t
+bm_memsize(const void *ptr)
+{
+    return ptr ? sizeof(struct METHOD) : 0;
+}
+
+static const rb_data_type_t method_data_type = {
+    "method",
+    {
+	bm_mark,
+	bm_free,
+	bm_memsize,
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+VALUE
+rb_obj_is_method(VALUE m)
+{
+    if (rb_typeddata_is_kind_of(m, &method_data_type)) {
+	return Qtrue;
+    }
+    else {
+	return Qfalse;
+    }
+}
+
+static VALUE
+mnew_internal(rb_method_entry_t *me, VALUE defined_class, VALUE klass,
+	      VALUE obj, ID id, VALUE mclass, int scope, int error)
+{
+    VALUE method;
+    VALUE rclass = klass;
+    ID rid = id;
+    struct METHOD *data;
+    rb_method_definition_t *def = 0;
+    rb_method_flag_t flag = NOEX_UNDEF;
+
+  again:
+    if (UNDEFINED_METHOD_ENTRY_P(me)) {
+	ID rmiss = idRespond_to_missing;
+	VALUE sym = ID2SYM(id);
+
+	if (obj != Qundef && !rb_method_basic_definition_p(klass, rmiss)) {
+	    if (RTEST(rb_funcall(obj, rmiss, 2, sym, scope ? Qfalse : Qtrue))) {
+		me = 0;
+		defined_class = klass;
+
+		goto gen_method;
+	    }
+	}
+	if (!error) return Qnil;
+	rb_print_undef(klass, id, 0);
+    }
+    def = me->def;
+    if (flag == NOEX_UNDEF) {
+	flag = me->flag;
+	if (scope && (flag & NOEX_MASK) != NOEX_PUBLIC) {
+	    if (!error) return Qnil;
+	    rb_print_inaccessible(klass, id, flag & NOEX_MASK);
+	}
+    }
+    if (def && def->type == VM_METHOD_TYPE_ZSUPER) {
+	klass = RCLASS_SUPER(defined_class);
+	id = def->original_id;
+	me = rb_method_entry_without_refinements(klass, id, &defined_class);
+	goto again;
+    }
+
+    klass = defined_class;
+
+    while (rclass != klass &&
+	   (FL_TEST(rclass, FL_SINGLETON) || RB_TYPE_P(rclass, T_ICLASS))) {
+	rclass = RCLASS_SUPER(rclass);
+    }
+
+  gen_method:
+    method = TypedData_Make_Struct(mclass, struct METHOD, &method_data_type, data);
+
+    data->recv = obj;
+    data->rclass = rclass;
+    data->defined_class = defined_class;
+    data->id = rid;
+    data->me = ALLOC(rb_method_entry_t);
+    if (me) {
+	*data->me = *me;
+    }
+    else {
+	me = data->me;
+	me->flag = 0;
+	me->mark = 0;
+	me->called_id = id;
+	me->klass = klass;
+	me->def = 0;
+
+	def = ALLOC(rb_method_definition_t);
+	me->def = def;
+
+	def->type = VM_METHOD_TYPE_MISSING;
+	def->original_id = id;
+	def->alias_count = 0;
+
+    }
+    data->ume = ALLOC(struct unlinked_method_entry_list_entry);
+    data->me->def->alias_count++;
+
+    OBJ_INFECT(method, klass);
+
+    return method;
+}
+
+static VALUE
+mnew_from_me(rb_method_entry_t *me, VALUE defined_class, VALUE klass,
+	     VALUE obj, ID id, VALUE mclass, int scope)
+{
+    return mnew_internal(me, defined_class, klass, obj, id, mclass, scope, TRUE);
+}
+
+static VALUE
+mnew(VALUE klass, VALUE obj, ID id, VALUE mclass, int scope)
+{
+    VALUE defined_class;
+    rb_method_entry_t *me =
+	rb_method_entry_without_refinements(klass, id, &defined_class);
+    return mnew_from_me(me, defined_class, klass, obj, id, mclass, scope);
+}
+
+
+/**********************************************************************
+ *
+ * Document-class : Method
+ *
+ *  Method objects are created by <code>Object#method</code>, and are
+ *  associated with a particular object (not just with a class). They
+ *  may be used to invoke the method within the object, and as a block
+ *  associated with an iterator. They may also be unbound from one
+ *  object (creating an <code>UnboundMethod</code>) and bound to
+ *  another.
+ *
+ *     class Thing
+ *       def square(n)
+ *         n*n
+ *       end
+ *     end
+ *     thing = Thing.new
+ *     meth  = thing.method(:square)
+ *
+ *     meth.call(9)                 #=> 81
+ *     [ 1, 2, 3 ].collect(&meth)   #=> [1, 4, 9]
+ *
+ */
+
+/*
+ * call-seq:
+ *   meth.eql?(other_meth)  -> true or false
+ *   meth == other_meth  -> true or false
+ *
+ * Two method objects are equal if they are bound to the same
+ * object and refer to the same method definition and their owners are the
+ * same class or module.
+ */
+
+static VALUE
+method_eq(VALUE method, VALUE other)
+{
+    struct METHOD *m1, *m2;
+
+    if (!rb_obj_is_method(other))
+	return Qfalse;
+    if (CLASS_OF(method) != CLASS_OF(other))
+	return Qfalse;
+
+    Check_TypedStruct(method, &method_data_type);
+    m1 = (struct METHOD *)DATA_PTR(method);
+    m2 = (struct METHOD *)DATA_PTR(other);
+
+    if (!rb_method_entry_eq(m1->me, m2->me) ||
+	m1->rclass != m2->rclass ||
+	m1->recv != m2->recv) {
+	return Qfalse;
+    }
+
+    return Qtrue;
+}
+
+/*
+ * call-seq:
+ *    meth.hash   -> integer
+ *
+ * Returns a hash value corresponding to the method object.
+ *
+ * See also Object#hash.
+ */
+
+static VALUE
+method_hash(VALUE method)
+{
+    struct METHOD *m;
+    st_index_t hash;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, m);
+    hash = rb_hash_start((st_index_t)m->rclass);
+    hash = rb_hash_uint(hash, (st_index_t)m->recv);
+    hash = rb_hash_method_entry(hash, m->me);
+    hash = rb_hash_end(hash);
+
+    return INT2FIX(hash);
+}
+
+/*
+ *  call-seq:
+ *     meth.unbind    -> unbound_method
+ *
+ *  Dissociates <i>meth</i> from its current receiver. The resulting
+ *  <code>UnboundMethod</code> can subsequently be bound to a new object
+ *  of the same class (see <code>UnboundMethod</code>).
+ */
+
+static VALUE
+method_unbind(VALUE obj)
+{
+    VALUE method;
+    struct METHOD *orig, *data;
+
+    TypedData_Get_Struct(obj, struct METHOD, &method_data_type, orig);
+    method = TypedData_Make_Struct(rb_cUnboundMethod, struct METHOD,
+				   &method_data_type, data);
+    data->recv = Qundef;
+    data->id = orig->id;
+    data->me = ALLOC(rb_method_entry_t);
+    *data->me = *orig->me;
+    if (orig->me->def) orig->me->def->alias_count++;
+    data->rclass = orig->rclass;
+    data->defined_class = orig->defined_class;
+    data->ume = ALLOC(struct unlinked_method_entry_list_entry);
+    OBJ_INFECT(method, obj);
+
+    return method;
+}
+
+/*
+ *  call-seq:
+ *     meth.receiver    -> object
+ *
+ *  Returns the bound receiver of the method object.
+ */
+
+static VALUE
+method_receiver(VALUE obj)
+{
+    struct METHOD *data;
+
+    TypedData_Get_Struct(obj, struct METHOD, &method_data_type, data);
+    return data->recv;
+}
+
+/*
+ *  call-seq:
+ *     meth.name    -> symbol
+ *
+ *  Returns the name of the method.
+ */
+
+static VALUE
+method_name(VALUE obj)
+{
+    struct METHOD *data;
+
+    TypedData_Get_Struct(obj, struct METHOD, &method_data_type, data);
+    return ID2SYM(data->id);
+}
+
+/*
+ *  call-seq:
+ *     meth.original_name    -> symbol
+ *
+ *  Returns the original name of the method.
+ */
+
+static VALUE
+method_original_name(VALUE obj)
+{
+    struct METHOD *data;
+
+    TypedData_Get_Struct(obj, struct METHOD, &method_data_type, data);
+    return ID2SYM(data->me->def->original_id);
+}
+
+/*
+ *  call-seq:
+ *     meth.owner    -> class_or_module
+ *
+ *  Returns the class or module that defines the method.
+ */
+
+static VALUE
+method_owner(VALUE obj)
+{
+    struct METHOD *data;
+    VALUE defined_class;
+
+    TypedData_Get_Struct(obj, struct METHOD, &method_data_type, data);
+    defined_class = data->defined_class;
+
+    if (RB_TYPE_P(defined_class, T_ICLASS)) {
+	defined_class = RBASIC_CLASS(defined_class);
+    }
+
+    return defined_class;
+}
+
+void
+rb_method_name_error(VALUE klass, VALUE str)
+{
+    const char *s0 = " class";
+    VALUE c = klass;
+
+    if (FL_TEST(c, FL_SINGLETON)) {
+	VALUE obj = rb_ivar_get(klass, attached);
+
+	switch (TYPE(obj)) {
+	  case T_MODULE:
+	  case T_CLASS:
+	    c = obj;
+	    s0 = "";
+	}
+    }
+    else if (RB_TYPE_P(c, T_MODULE)) {
+	s0 = " module";
+    }
+    rb_name_error_str(str, "undefined method `%"PRIsVALUE"' for%s `%"PRIsVALUE"'",
+		      QUOTE(str), s0, rb_class_name(c));
+}
+
+/*
+ *  call-seq:
+ *     obj.method(sym)    -> method
+ *
+ *  Looks up the named method as a receiver in <i>obj</i>, returning a
+ *  <code>Method</code> object (or raising <code>NameError</code>). The
+ *  <code>Method</code> object acts as a closure in <i>obj</i>'s object
+ *  instance, so instance variables and the value of <code>self</code>
+ *  remain available.
+ *
+ *     class Demo
+ *       def initialize(n)
+ *         @iv = n
+ *       end
+ *       def hello()
+ *         "Hello, @iv = #{@iv}"
+ *       end
+ *     end
+ *
+ *     k = Demo.new(99)
+ *     m = k.method(:hello)
+ *     m.call   #=> "Hello, @iv = 99"
+ *
+ *     l = Demo.new('Fred')
+ *     m = l.method("hello")
+ *     m.call   #=> "Hello, @iv = Fred"
+ */
+
+VALUE
+rb_obj_method(VALUE obj, VALUE vid)
+{
+    ID id = rb_check_id(&vid);
+    if (!id) {
+	rb_method_name_error(CLASS_OF(obj), vid);
+    }
+    return mnew(CLASS_OF(obj), obj, id, rb_cMethod, FALSE);
+}
+
+/*
+ *  call-seq:
+ *     obj.public_method(sym)    -> method
+ *
+ *  Similar to _method_, searches public method only.
+ */
+
+VALUE
+rb_obj_public_method(VALUE obj, VALUE vid)
+{
+    ID id = rb_check_id(&vid);
+    if (!id) {
+	rb_method_name_error(CLASS_OF(obj), vid);
+    }
+    return mnew(CLASS_OF(obj), obj, id, rb_cMethod, TRUE);
+}
+
+/*
+ *  call-seq:
+ *     obj.singleton_method(sym)    -> method
+ *
+ *  Similar to _method_, searches singleton method only.
+ *
+ *     class Demo
+ *       def initialize(n)
+ *         @iv = n
+ *       end
+ *       def hello()
+ *         "Hello, @iv = #{@iv}"
+ *       end
+ *     end
+ *
+ *     k = Demo.new(99)
+ *     def k.hi
+ *       "Hi, @iv = #{@iv}"
+ *     end
+ *     m = k.singleton_method(:hi)
+ *     m.call   #=> "Hi, @iv = 99"
+ *     m = k.singleton_method(:hello) #=> NameError
+ */
+
+VALUE
+rb_obj_singleton_method(VALUE obj, VALUE vid)
+{
+    rb_method_entry_t *me;
+    VALUE klass;
+    ID id = rb_check_id(&vid);
+    if (!id) {
+	rb_name_error_str(vid, "undefined singleton method `%"PRIsVALUE"' for `%"PRIsVALUE"'",
+			  QUOTE(vid), obj);
+    }
+    if (NIL_P(klass = rb_singleton_class_get(obj)) ||
+	UNDEFINED_METHOD_ENTRY_P(me = rb_method_entry_at(klass, id)) ||
+	UNDEFINED_REFINED_METHOD_P(me->def)) {
+	rb_name_error(id, "undefined singleton method `%"PRIsVALUE"' for `%"PRIsVALUE"'",
+		      QUOTE_ID(id), obj);
+    }
+    return mnew_from_me(me, klass, klass, obj, id, rb_cMethod, FALSE);
+}
+
+/*
+ *  call-seq:
+ *     mod.instance_method(symbol)   -> unbound_method
+ *
+ *  Returns an +UnboundMethod+ representing the given
+ *  instance method in _mod_.
+ *
+ *     class Interpreter
+ *       def do_a() print "there, "; end
+ *       def do_d() print "Hello ";  end
+ *       def do_e() print "!\n";     end
+ *       def do_v() print "Dave";    end
+ *       Dispatcher = {
+ *         "a" => instance_method(:do_a),
+ *         "d" => instance_method(:do_d),
+ *         "e" => instance_method(:do_e),
+ *         "v" => instance_method(:do_v)
+ *       }
+ *       def interpret(string)
+ *         string.each_char {|b| Dispatcher[b].bind(self).call }
+ *       end
+ *     end
+ *
+ *     interpreter = Interpreter.new
+ *     interpreter.interpret('dave')
+ *
+ *  <em>produces:</em>
+ *
+ *     Hello there, Dave!
+ */
+
+static VALUE
+rb_mod_instance_method(VALUE mod, VALUE vid)
+{
+    ID id = rb_check_id(&vid);
+    if (!id) {
+	rb_method_name_error(mod, vid);
+    }
+    return mnew(mod, Qundef, id, rb_cUnboundMethod, FALSE);
+}
+
+/*
+ *  call-seq:
+ *     mod.public_instance_method(symbol)   -> unbound_method
+ *
+ *  Similar to _instance_method_, searches public method only.
+ */
+
+static VALUE
+rb_mod_public_instance_method(VALUE mod, VALUE vid)
+{
+    ID id = rb_check_id(&vid);
+    if (!id) {
+	rb_method_name_error(mod, vid);
+    }
+    return mnew(mod, Qundef, id, rb_cUnboundMethod, TRUE);
+}
+
+/*
+ *  call-seq:
+ *     define_method(symbol, method)     -> symbol
+ *     define_method(symbol) { block }   -> symbol
+ *
+ *  Defines an instance method in the receiver. The _method_
+ *  parameter can be a +Proc+, a +Method+ or an +UnboundMethod+ object.
+ *  If a block is specified, it is used as the method body. This block
+ *  is evaluated using <code>instance_eval</code>, a point that is
+ *  tricky to demonstrate because <code>define_method</code> is private.
+ *  (This is why we resort to the +send+ hack in this example.)
+ *
+ *     class A
+ *       def fred
+ *         puts "In Fred"
+ *       end
+ *       def create_method(name, &block)
+ *         self.class.send(:define_method, name, &block)
+ *       end
+ *       define_method(:wilma) { puts "Charge it!" }
+ *     end
+ *     class B < A
+ *       define_method(:barney, instance_method(:fred))
+ *     end
+ *     a = B.new
+ *     a.barney
+ *     a.wilma
+ *     a.create_method(:betty) { p self }
+ *     a.betty
+ *
+ *  <em>produces:</em>
+ *
+ *     In Fred
+ *     Charge it!
+ *     #<B:0x401b39e8>
+ */
+
+static VALUE
+rb_mod_define_method(int argc, VALUE *argv, VALUE mod)
+{
+    ID id;
+    VALUE body;
+    int noex = NOEX_PUBLIC;
+    const NODE *cref = rb_vm_cref_in_context(mod, mod);
+
+    if (cref) {
+	noex = (int)cref->nd_visi;
+    }
+
+    if (argc == 1) {
+	id = rb_to_id(argv[0]);
+	body = rb_block_lambda();
+    }
+    else {
+	rb_check_arity(argc, 1, 2);
+	id = rb_to_id(argv[0]);
+	body = argv[1];
+	if (!rb_obj_is_method(body) && !rb_obj_is_proc(body)) {
+	    rb_raise(rb_eTypeError,
+		     "wrong argument type %s (expected Proc/Method)",
+		     rb_obj_classname(body));
+	}
+    }
+
+    if (rb_obj_is_method(body)) {
+	struct METHOD *method = (struct METHOD *)DATA_PTR(body);
+	VALUE rclass = method->rclass;
+	if (rclass != mod && !RB_TYPE_P(rclass, T_MODULE) &&
+	    !RTEST(rb_class_inherited_p(mod, rclass))) {
+	    if (FL_TEST(rclass, FL_SINGLETON)) {
+		rb_raise(rb_eTypeError,
+			 "can't bind singleton method to a different class");
+	    }
+	    else {
+		rb_raise(rb_eTypeError,
+			 "bind argument must be a subclass of % "PRIsVALUE,
+			 rb_class_name(rclass));
+	    }
+	}
+	rb_method_entry_set(mod, id, method->me, noex);
+	if (noex == NOEX_MODFUNC) {
+	    rb_method_entry_set(rb_singleton_class(mod), id, method->me, NOEX_PUBLIC);
+	}
+	RB_GC_GUARD(body);
+    }
+    else if (rb_obj_is_proc(body)) {
+	rb_proc_t *proc;
+	body = proc_dup(body);
+	GetProcPtr(body, proc);
+	if (BUILTIN_TYPE(proc->block.iseq) != T_NODE) {
+	    proc->block.iseq->defined_method_id = id;
+	    RB_OBJ_WRITE(proc->block.iseq->self, &proc->block.iseq->klass, mod);
+	    proc->is_lambda = TRUE;
+	    proc->is_from_method = TRUE;
+	    proc->block.klass = mod;
+	}
+	rb_add_method(mod, id, VM_METHOD_TYPE_BMETHOD, (void *)body, noex);
+	if (noex == NOEX_MODFUNC) {
+	    rb_add_method(rb_singleton_class(mod), id, VM_METHOD_TYPE_BMETHOD, (void *)body, NOEX_PUBLIC);
+	}
+    }
+    else {
+	/* type error */
+	rb_raise(rb_eTypeError, "wrong argument type (expected Proc/Method)");
+    }
+
+    return ID2SYM(id);
+}
+
+/*
+ *  call-seq:
+ *     define_singleton_method(symbol, method) -> new_method
+ *     define_singleton_method(symbol) { block } -> proc
+ *
+ *  Defines a singleton method in the receiver. The _method_
+ *  parameter can be a +Proc+, a +Method+ or an +UnboundMethod+ object.
+ *  If a block is specified, it is used as the method body.
+ *
+ *     class A
+ *       class << self
+ *         def class_name
+ *           to_s
+ *         end
+ *       end
+ *     end
+ *     A.define_singleton_method(:who_am_i) do
+ *       "I am: #{class_name}"
+ *     end
+ *     A.who_am_i   # ==> "I am: A"
+ *
+ *     guy = "Bob"
+ *     guy.define_singleton_method(:hello) { "#{self}: Hello there!" }
+ *     guy.hello    #=>  "Bob: Hello there!"
+ */
+
+static VALUE
+rb_obj_define_method(int argc, VALUE *argv, VALUE obj)
+{
+    VALUE klass = rb_singleton_class(obj);
+
+    return rb_mod_define_method(argc, argv, klass);
+}
+
+/*
+ *     define_method(symbol, method)     -> new_method
+ *     define_method(symbol) { block }   -> proc
+ *
+ *  Defines a global function by _method_ or the block.
+ */
+
+static VALUE
+top_define_method(int argc, VALUE *argv, VALUE obj)
+{
+    rb_thread_t *th = GET_THREAD();
+    VALUE klass;
+
+    klass = th->top_wrapper;
+    if (klass) {
+	rb_warning("main.define_method in the wrapped load is effective only in wrapper module");
+    }
+    else {
+	klass = rb_cObject;
+    }
+    return rb_mod_define_method(argc, argv, klass);
+}
+
+/*
+ *  call-seq:
+ *    method.clone -> new_method
+ *
+ *  Returns a clone of this method.
+ *
+ *    class A
+ *      def foo
+ *        return "bar"
+ *      end
+ *    end
+ *
+ *    m = A.new.method(:foo)
+ *    m.call # => "bar"
+ *    n = m.clone.call # => "bar"
+ */
+
+static VALUE
+method_clone(VALUE self)
+{
+    VALUE clone;
+    struct METHOD *orig, *data;
+
+    TypedData_Get_Struct(self, struct METHOD, &method_data_type, orig);
+    clone = TypedData_Make_Struct(CLASS_OF(self), struct METHOD, &method_data_type, data);
+    CLONESETUP(clone, self);
+    *data = *orig;
+    data->me = ALLOC(rb_method_entry_t);
+    *data->me = *orig->me;
+    if (data->me->def) data->me->def->alias_count++;
+    data->ume = ALLOC(struct unlinked_method_entry_list_entry);
+
+    return clone;
+}
+
+/*
+ *  call-seq:
+ *     meth.call(args, ...)    -> obj
+ *     meth[args, ...]         -> obj
+ *
+ *  Invokes the <i>meth</i> with the specified arguments, returning the
+ *  method's return value.
+ *
+ *     m = 12.method("+")
+ *     m.call(3)    #=> 15
+ *     m.call(20)   #=> 32
+ */
+
+VALUE
+rb_method_call(int argc, const VALUE *argv, VALUE method)
+{
+    VALUE proc = rb_block_given_p() ? rb_block_proc() : Qnil;
+    return rb_method_call_with_block(argc, argv, method, proc);
+}
+
+VALUE
+rb_method_call_with_block(int argc, const VALUE *argv, VALUE method, VALUE pass_procval)
+{
+    VALUE result = Qnil;	/* OK */
+    struct METHOD *data;
+    int state;
+    volatile int safe = -1;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+    if (data->recv == Qundef) {
+	rb_raise(rb_eTypeError, "can't call unbound method; bind first");
+    }
+    PUSH_TAG();
+    if (OBJ_TAINTED(method)) {
+	const int safe_level_to_run = RUBY_SAFE_LEVEL_MAX;
+	safe = rb_safe_level();
+	if (safe < safe_level_to_run) {
+	    rb_set_safe_level_force(safe_level_to_run);
+	}
+    }
+    if ((state = EXEC_TAG()) == 0) {
+	rb_thread_t *th = GET_THREAD();
+	rb_block_t *block = 0;
+	VALUE defined_class;
+
+	if (!NIL_P(pass_procval)) {
+	    rb_proc_t *pass_proc;
+	    GetProcPtr(pass_procval, pass_proc);
+	    block = &pass_proc->block;
+	}
+
+	th->passed_block = block;
+	VAR_INITIALIZED(data);
+	defined_class = data->defined_class;
+	if (BUILTIN_TYPE(defined_class) == T_MODULE) defined_class = data->rclass;
+	result = rb_vm_call(th, data->recv, data->id, argc, argv, data->me, defined_class);
+    }
+    POP_TAG();
+    if (safe >= 0)
+	rb_set_safe_level_force(safe);
+    if (state)
+	JUMP_TAG(state);
+    return result;
+}
+
+/**********************************************************************
+ *
+ * Document-class: UnboundMethod
+ *
+ *  Ruby supports two forms of objectified methods. Class
+ *  <code>Method</code> is used to represent methods that are associated
+ *  with a particular object: these method objects are bound to that
+ *  object. Bound method objects for an object can be created using
+ *  <code>Object#method</code>.
+ *
+ *  Ruby also supports unbound methods; methods objects that are not
+ *  associated with a particular object. These can be created either by
+ *  calling <code>Module#instance_method</code> or by calling
+ *  <code>unbind</code> on a bound method object. The result of both of
+ *  these is an <code>UnboundMethod</code> object.
+ *
+ *  Unbound methods can only be called after they are bound to an
+ *  object. That object must be be a kind_of? the method's original
+ *  class.
+ *
+ *     class Square
+ *       def area
+ *         @side * @side
+ *       end
+ *       def initialize(side)
+ *         @side = side
+ *       end
+ *     end
+ *
+ *     area_un = Square.instance_method(:area)
+ *
+ *     s = Square.new(12)
+ *     area = area_un.bind(s)
+ *     area.call   #=> 144
+ *
+ *  Unbound methods are a reference to the method at the time it was
+ *  objectified: subsequent changes to the underlying class will not
+ *  affect the unbound method.
+ *
+ *     class Test
+ *       def test
+ *         :original
+ *       end
+ *     end
+ *     um = Test.instance_method(:test)
+ *     class Test
+ *       def test
+ *         :modified
+ *       end
+ *     end
+ *     t = Test.new
+ *     t.test            #=> :modified
+ *     um.bind(t).call   #=> :original
+ *
+ */
+
+/*
+ *  call-seq:
+ *     umeth.bind(obj) -> method
+ *
+ *  Bind <i>umeth</i> to <i>obj</i>. If <code>Klass</code> was the class
+ *  from which <i>umeth</i> was obtained,
+ *  <code>obj.kind_of?(Klass)</code> must be true.
+ *
+ *     class A
+ *       def test
+ *         puts "In test, class = #{self.class}"
+ *       end
+ *     end
+ *     class B < A
+ *     end
+ *     class C < B
+ *     end
+ *
+ *
+ *     um = B.instance_method(:test)
+ *     bm = um.bind(C.new)
+ *     bm.call
+ *     bm = um.bind(B.new)
+ *     bm.call
+ *     bm = um.bind(A.new)
+ *     bm.call
+ *
+ *  <em>produces:</em>
+ *
+ *     In test, class = C
+ *     In test, class = B
+ *     prog.rb:16:in `bind': bind argument must be an instance of B (TypeError)
+ *     	from prog.rb:16
+ */
+
+static VALUE
+umethod_bind(VALUE method, VALUE recv)
+{
+    struct METHOD *data, *bound;
+    VALUE methclass;
+    VALUE rclass;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+
+    methclass = data->rclass;
+    if (!RB_TYPE_P(methclass, T_MODULE) &&
+	methclass != CLASS_OF(recv) && !rb_obj_is_kind_of(recv, methclass)) {
+	if (FL_TEST(methclass, FL_SINGLETON)) {
+	    rb_raise(rb_eTypeError,
+		     "singleton method called for a different object");
+	}
+	else {
+	    rb_raise(rb_eTypeError, "bind argument must be an instance of % "PRIsVALUE,
+		     rb_class_name(methclass));
+	}
+    }
+
+    method = TypedData_Make_Struct(rb_cMethod, struct METHOD, &method_data_type, bound);
+    *bound = *data;
+    bound->me = ALLOC(rb_method_entry_t);
+    *bound->me = *data->me;
+    if (bound->me->def) bound->me->def->alias_count++;
+    rclass = CLASS_OF(recv);
+    if (BUILTIN_TYPE(bound->defined_class) == T_MODULE) {
+	VALUE ic = rb_class_search_ancestor(rclass, bound->defined_class);
+	if (ic) {
+	    rclass = ic;
+	}
+	else {
+	    rclass = rb_include_class_new(methclass, rclass);
+	}
+    }
+    bound->recv = recv;
+    bound->rclass = rclass;
+    data->ume = ALLOC(struct unlinked_method_entry_list_entry);
+
+    return method;
+}
+
+/*
+ * Returns the number of required parameters and stores the maximum
+ * number of parameters in max, or UNLIMITED_ARGUMENTS
+ * if there is no maximum.
+ */
+static int
+rb_method_entry_min_max_arity(const rb_method_entry_t *me, int *max)
+{
+    const rb_method_definition_t *def = me->def;
+    if (!def) return *max = 0;
+    switch (def->type) {
+      case VM_METHOD_TYPE_CFUNC:
+	if (def->body.cfunc.argc < 0) {
+	    *max = UNLIMITED_ARGUMENTS;
+	    return 0;
+	}
+	return *max = check_argc(def->body.cfunc.argc);
+      case VM_METHOD_TYPE_ZSUPER:
+	*max = UNLIMITED_ARGUMENTS;
+	return 0;
+      case VM_METHOD_TYPE_ATTRSET:
+	return *max = 1;
+      case VM_METHOD_TYPE_IVAR:
+	return *max = 0;
+      case VM_METHOD_TYPE_BMETHOD:
+	return rb_proc_min_max_arity(def->body.proc, max);
+      case VM_METHOD_TYPE_ISEQ: {
+	rb_iseq_t *iseq = def->body.iseq;
+	return rb_iseq_min_max_arity(iseq, max);
+      }
+      case VM_METHOD_TYPE_UNDEF:
+      case VM_METHOD_TYPE_NOTIMPLEMENTED:
+	return *max = 0;
+      case VM_METHOD_TYPE_MISSING:
+	*max = UNLIMITED_ARGUMENTS;
+	return 0;
+      case VM_METHOD_TYPE_OPTIMIZED: {
+	switch (def->body.optimize_type) {
+	  case OPTIMIZED_METHOD_TYPE_SEND:
+	    *max = UNLIMITED_ARGUMENTS;
+	    return 0;
+	  default:
+	    break;
+	}
+	break;
+      }
+      case VM_METHOD_TYPE_REFINED:
+	*max = UNLIMITED_ARGUMENTS;
+	return 0;
+    }
+    rb_bug("rb_method_entry_min_max_arity: invalid method entry type (%d)", def->type);
+    UNREACHABLE;
+}
+
+int
+rb_method_entry_arity(const rb_method_entry_t *me)
+{
+    int max, min = rb_method_entry_min_max_arity(me, &max);
+    return min == max ? min : -min-1;
+}
+
+/*
+ *  call-seq:
+ *     meth.arity    -> fixnum
+ *
+ *  Returns an indication of the number of arguments accepted by a
+ *  method. Returns a nonnegative integer for methods that take a fixed
+ *  number of arguments. For Ruby methods that take a variable number of
+ *  arguments, returns -n-1, where n is the number of required
+ *  arguments. For methods written in C, returns -1 if the call takes a
+ *  variable number of arguments.
+ *
+ *     class C
+ *       def one;    end
+ *       def two(a); end
+ *       def three(*a);  end
+ *       def four(a, b); end
+ *       def five(a, b, *c);    end
+ *       def six(a, b, *c, &d); end
+ *     end
+ *     c = C.new
+ *     c.method(:one).arity     #=> 0
+ *     c.method(:two).arity     #=> 1
+ *     c.method(:three).arity   #=> -1
+ *     c.method(:four).arity    #=> 2
+ *     c.method(:five).arity    #=> -3
+ *     c.method(:six).arity     #=> -3
+ *
+ *     "cat".method(:size).arity      #=> 0
+ *     "cat".method(:replace).arity   #=> 1
+ *     "cat".method(:squeeze).arity   #=> -1
+ *     "cat".method(:count).arity     #=> -1
+ */
+
+static VALUE
+method_arity_m(VALUE method)
+{
+    int n = method_arity(method);
+    return INT2FIX(n);
+}
+
+static int
+method_arity(VALUE method)
+{
+    struct METHOD *data;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+    return rb_method_entry_arity(data->me);
+}
+
+static rb_method_entry_t *
+original_method_entry(VALUE mod, ID id)
+{
+    VALUE rclass;
+    rb_method_entry_t *me;
+    while ((me = rb_method_entry(mod, id, &rclass)) != 0) {
+	rb_method_definition_t *def = me->def;
+	if (!def) break;
+	if (def->type != VM_METHOD_TYPE_ZSUPER) break;
+	mod = RCLASS_SUPER(rclass);
+	id = def->original_id;
+    }
+    return me;
+}
+
+static int
+method_min_max_arity(VALUE method, int *max)
+{
+    struct METHOD *data;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+    return rb_method_entry_min_max_arity(data->me, max);
+}
+
+int
+rb_mod_method_arity(VALUE mod, ID id)
+{
+    rb_method_entry_t *me = original_method_entry(mod, id);
+    if (!me) return 0;		/* should raise? */
+    return rb_method_entry_arity(me);
+}
+
+int
+rb_obj_method_arity(VALUE obj, ID id)
+{
+    return rb_mod_method_arity(CLASS_OF(obj), id);
+}
+
+static inline rb_method_definition_t *
+method_get_def(VALUE method)
+{
+    struct METHOD *data;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+    return data->me->def;
+}
+
+static rb_iseq_t *
+method_get_iseq(rb_method_definition_t *def)
+{
+    switch (def->type) {
+      case VM_METHOD_TYPE_BMETHOD:
+	return get_proc_iseq(def->body.proc, 0);
+      case VM_METHOD_TYPE_ISEQ:
+	return def->body.iseq;
+      default:
+	return 0;
+    }
+}
+
+rb_iseq_t *
+rb_method_get_iseq(VALUE method)
+{
+    return method_get_iseq(method_get_def(method));
+}
+
+static VALUE
+method_def_location(rb_method_definition_t *def)
+{
+    if (def->type == VM_METHOD_TYPE_ATTRSET || def->type == VM_METHOD_TYPE_IVAR) {
+	if (!def->body.attr.location)
+	    return Qnil;
+	return rb_ary_dup(def->body.attr.location);
+    }
+    return iseq_location(method_get_iseq(def));
+}
+
+VALUE
+rb_method_entry_location(rb_method_entry_t *me)
+{
+    if (!me || !me->def) return Qnil;
+    return method_def_location(me->def);
+}
+
+VALUE
+rb_mod_method_location(VALUE mod, ID id)
+{
+    rb_method_entry_t *me = original_method_entry(mod, id);
+    return rb_method_entry_location(me);
+}
+
+VALUE
+rb_obj_method_location(VALUE obj, ID id)
+{
+    return rb_mod_method_location(CLASS_OF(obj), id);
+}
+
+/*
+ * call-seq:
+ *    meth.source_location  -> [String, Fixnum]
+ *
+ * Returns the Ruby source filename and line number containing this method
+ * or nil if this method was not defined in Ruby (i.e. native)
+ */
+
+VALUE
+rb_method_location(VALUE method)
+{
+    rb_method_definition_t *def = method_get_def(method);
+    return method_def_location(def);
+}
+
+/*
+ * call-seq:
+ *    meth.parameters  -> array
+ *
+ * Returns the parameter information of this method.
+ */
+
+static VALUE
+rb_method_parameters(VALUE method)
+{
+    rb_iseq_t *iseq = rb_method_get_iseq(method);
+    if (!iseq) {
+	return unnamed_parameters(method_arity(method));
+    }
+    return rb_iseq_parameters(iseq, 0);
+}
+
+/*
+ *  call-seq:
+ *   meth.to_s      ->  string
+ *   meth.inspect   ->  string
+ *
+ *  Returns the name of the underlying method.
+ *
+ *    "cat".method(:count).inspect   #=> "#<Method: String#count>"
+ */
+
+static VALUE
+method_inspect(VALUE method)
+{
+    struct METHOD *data;
+    VALUE str;
+    const char *s;
+    const char *sharp = "#";
+    VALUE mklass;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+    str = rb_str_buf_new2("#<");
+    s = rb_obj_classname(method);
+    rb_str_buf_cat2(str, s);
+    rb_str_buf_cat2(str, ": ");
+
+    mklass = data->me->klass;
+    if (FL_TEST(mklass, FL_SINGLETON)) {
+	VALUE v = rb_ivar_get(mklass, attached);
+
+	if (data->recv == Qundef) {
+	    rb_str_buf_append(str, rb_inspect(mklass));
+	}
+	else if (data->recv == v) {
+	    rb_str_buf_append(str, rb_inspect(v));
+	    sharp = ".";
+	}
+	else {
+	    rb_str_buf_append(str, rb_inspect(data->recv));
+	    rb_str_buf_cat2(str, "(");
+	    rb_str_buf_append(str, rb_inspect(v));
+	    rb_str_buf_cat2(str, ")");
+	    sharp = ".";
+	}
+    }
+    else {
+	rb_str_buf_append(str, rb_class_name(data->rclass));
+	if (data->rclass != mklass) {
+	    rb_str_buf_cat2(str, "(");
+	    rb_str_buf_append(str, rb_class_name(mklass));
+	    rb_str_buf_cat2(str, ")");
+	}
+    }
+    rb_str_buf_cat2(str, sharp);
+    rb_str_append(str, rb_id2str(data->id));
+    if (data->id != data->me->def->original_id) {
+	rb_str_catf(str, "(%"PRIsVALUE")",
+		    rb_id2str(data->me->def->original_id));
+    }
+    if (data->me->def->type == VM_METHOD_TYPE_NOTIMPLEMENTED) {
+        rb_str_buf_cat2(str, " (not-implemented)");
+    }
+    rb_str_buf_cat2(str, ">");
+
+    return str;
+}
+
+static VALUE
+mproc(VALUE method)
+{
+    return rb_funcall2(rb_mRubyVMFrozenCore, idProc, 0, 0);
+}
+
+static VALUE
+mlambda(VALUE method)
+{
+    return rb_funcall(rb_mRubyVMFrozenCore, idLambda, 0, 0);
+}
+
+static VALUE
+bmcall(VALUE args, VALUE method, int argc, VALUE *argv, VALUE passed_proc)
+{
+    volatile VALUE a;
+    VALUE ret;
+
+    if (CLASS_OF(args) != rb_cArray) {
+	args = rb_ary_new3(1, args);
+	argc = 1;
+    }
+    else {
+	argc = check_argc(RARRAY_LEN(args));
+    }
+    ret = rb_method_call_with_block(argc, RARRAY_PTR(args), method, passed_proc);
+    RB_GC_GUARD(a) = args;
+    return ret;
+}
+
+VALUE
+rb_proc_new(
+    VALUE (*func)(ANYARGS), /* VALUE yieldarg[, VALUE procarg] */
+    VALUE val)
+{
+    VALUE procval = rb_iterate(mproc, 0, func, val);
+    return procval;
+}
+
+/*
+ *  call-seq:
+ *     meth.to_proc    -> proc
+ *
+ *  Returns a <code>Proc</code> object corresponding to this method.
+ */
+
+static VALUE
+method_proc(VALUE method)
+{
+    VALUE procval;
+    struct METHOD *meth;
+    rb_proc_t *proc;
+    rb_env_t *env;
+
+    /*
+     * class Method
+     *   def to_proc
+     *     proc{|*args|
+     *       self.call(*args)
+     *     }
+     *   end
+     * end
+     */
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, meth);
+    procval = rb_iterate(mlambda, 0, bmcall, method);
+    GetProcPtr(procval, proc);
+    proc->is_from_method = 1;
+    proc->block.self = meth->recv;
+    proc->block.klass = meth->defined_class;
+    GetEnvPtr(proc->envval, env);
+    env->block.self = meth->recv;
+    env->block.klass = meth->defined_class;
+    env->block.iseq = method_get_iseq(meth->me->def);
+    return procval;
+}
+
+/*
+ * Returns a Method of superclass, which would be called when super is used.
+ */
+static VALUE
+method_super_method(VALUE method)
+{
+    struct METHOD *data;
+    VALUE defined_class, super_class;
+    rb_method_entry_t *me;
+
+    TypedData_Get_Struct(method, struct METHOD, &method_data_type, data);
+    defined_class = data->defined_class;
+    if (BUILTIN_TYPE(defined_class) == T_MODULE) defined_class = data->rclass;
+    super_class = RCLASS_SUPER(defined_class);
+    if (!super_class) return Qnil;
+    me = rb_method_entry_without_refinements(super_class, data->id, &defined_class);
+    if (!me) return Qnil;
+    return mnew_internal(me, defined_class,
+			 super_class, data->recv, data->id,
+			 rb_obj_class(method), FALSE, FALSE);
+}
+
+/*
+ * call-seq:
+ *   local_jump_error.exit_value  -> obj
+ *
+ * Returns the exit value associated with this +LocalJumpError+.
+ */
+static VALUE
+localjump_xvalue(VALUE exc)
+{
+    return rb_iv_get(exc, "@exit_value");
+}
+
+/*
+ * call-seq:
+ *    local_jump_error.reason   -> symbol
+ *
+ * The reason this block was terminated:
+ * :break, :redo, :retry, :next, :return, or :noreason.
+ */
+
+static VALUE
+localjump_reason(VALUE exc)
+{
+    return rb_iv_get(exc, "@reason");
+}
+
+/*
+ *  call-seq:
+ *     prc.binding    -> binding
+ *
+ *  Returns the binding associated with <i>prc</i>. Note that
+ *  <code>Kernel#eval</code> accepts either a <code>Proc</code> or a
+ *  <code>Binding</code> object as its second parameter.
+ *
+ *     def fred(param)
+ *       proc {}
+ *     end
+ *
+ *     b = fred(99)
+ *     eval("param", b.binding)   #=> 99
+ */
+static VALUE
+proc_binding(VALUE self)
+{
+    rb_proc_t *proc;
+    VALUE bindval;
+    rb_binding_t *bind;
+    rb_iseq_t *iseq;
+
+    GetProcPtr(self, proc);
+    iseq = proc->block.iseq;
+    if (RB_TYPE_P((VALUE)iseq, T_NODE)) {
+	if (!IS_METHOD_PROC_NODE((NODE *)iseq)) {
+	    rb_raise(rb_eArgError, "Can't create Binding from C level Proc");
+	}
+	iseq = rb_method_get_iseq(RNODE(iseq)->u2.value);
+    }
+
+    bindval = rb_binding_alloc(rb_cBinding);
+    GetBindingPtr(bindval, bind);
+    bind->env = proc->envval;
+    bind->blockprocval = proc->blockprocval;
+    if (RUBY_VM_NORMAL_ISEQ_P(iseq)) {
+	bind->path = iseq->location.path;
+	bind->first_lineno = FIX2INT(rb_iseq_first_lineno(iseq->self));
+    }
+    else {
+	bind->path = Qnil;
+	bind->first_lineno = 0;
+    }
+    return bindval;
+}
+
+static VALUE curry(VALUE dummy, VALUE args, int argc, VALUE *argv, VALUE passed_proc);
+
+static VALUE
+make_curry_proc(VALUE proc, VALUE passed, VALUE arity)
+{
+    VALUE args = rb_ary_new3(3, proc, passed, arity);
+    rb_proc_t *procp;
+    int is_lambda;
+
+    GetProcPtr(proc, procp);
+    is_lambda = procp->is_lambda;
+    rb_ary_freeze(passed);
+    rb_ary_freeze(args);
+    proc = rb_proc_new(curry, args);
+    GetProcPtr(proc, procp);
+    procp->is_lambda = is_lambda;
+    return proc;
+}
+
+static VALUE
+curry(VALUE dummy, VALUE args, int argc, VALUE *argv, VALUE passed_proc)
+{
+    VALUE proc, passed, arity;
+    proc = RARRAY_AREF(args, 0);
+    passed = RARRAY_AREF(args, 1);
+    arity = RARRAY_AREF(args, 2);
+
+    passed = rb_ary_plus(passed, rb_ary_new4(argc, argv));
+    rb_ary_freeze(passed);
+
+    if (RARRAY_LEN(passed) < FIX2INT(arity)) {
+	if (!NIL_P(passed_proc)) {
+	    rb_warn("given block not used");
+	}
+	arity = make_curry_proc(proc, passed, arity);
+	return arity;
+    }
+    else {
+	return rb_proc_call_with_block(proc, check_argc(RARRAY_LEN(passed)), RARRAY_CONST_PTR(passed), passed_proc);
+    }
+}
+
+ /*
+  *  call-seq:
+  *     prc.curry         -> a_proc
+  *     prc.curry(arity)  -> a_proc
+  *
+  *  Returns a curried proc. If the optional <i>arity</i> argument is given,
+  *  it determines the number of arguments.
+  *  A curried proc receives some arguments. If a sufficient number of
+  *  arguments are supplied, it passes the supplied arguments to the original
+  *  proc and returns the result. Otherwise, returns another curried proc that
+  *  takes the rest of arguments.
+  *
+  *     b = proc {|x, y, z| (x||0) + (y||0) + (z||0) }
+  *     p b.curry[1][2][3]           #=> 6
+  *     p b.curry[1, 2][3, 4]        #=> 6
+  *     p b.curry(5)[1][2][3][4][5]  #=> 6
+  *     p b.curry(5)[1, 2][3, 4][5]  #=> 6
+  *     p b.curry(1)[1]              #=> 1
+  *
+  *     b = proc {|x, y, z, *w| (x||0) + (y||0) + (z||0) + w.inject(0, &:+) }
+  *     p b.curry[1][2][3]           #=> 6
+  *     p b.curry[1, 2][3, 4]        #=> 10
+  *     p b.curry(5)[1][2][3][4][5]  #=> 15
+  *     p b.curry(5)[1, 2][3, 4][5]  #=> 15
+  *     p b.curry(1)[1]              #=> 1
+  *
+  *     b = lambda {|x, y, z| (x||0) + (y||0) + (z||0) }
+  *     p b.curry[1][2][3]           #=> 6
+  *     p b.curry[1, 2][3, 4]        #=> wrong number of arguments (4 for 3)
+  *     p b.curry(5)                 #=> wrong number of arguments (5 for 3)
+  *     p b.curry(1)                 #=> wrong number of arguments (1 for 3)
+  *
+  *     b = lambda {|x, y, z, *w| (x||0) + (y||0) + (z||0) + w.inject(0, &:+) }
+  *     p b.curry[1][2][3]           #=> 6
+  *     p b.curry[1, 2][3, 4]        #=> 10
+  *     p b.curry(5)[1][2][3][4][5]  #=> 15
+  *     p b.curry(5)[1, 2][3, 4][5]  #=> 15
+  *     p b.curry(1)                 #=> wrong number of arguments (1 for 3)
+  *
+  *     b = proc { :foo }
+  *     p b.curry[]                  #=> :foo
+  */
+static VALUE
+proc_curry(int argc, const VALUE *argv, VALUE self)
+{
+    int sarity, max_arity, min_arity = rb_proc_min_max_arity(self, &max_arity);
+    VALUE arity;
+
+    rb_scan_args(argc, argv, "01", &arity);
+    if (NIL_P(arity)) {
+	arity = INT2FIX(min_arity);
+    }
+    else {
+	sarity = FIX2INT(arity);
+	if (rb_proc_lambda_p(self)) {
+	    rb_check_arity(sarity, min_arity, max_arity);
+	}
+    }
+
+    return make_curry_proc(self, rb_ary_new(), arity);
+}
+
+/*
+ *  call-seq:
+ *     meth.curry        -> proc
+ *     meth.curry(arity) -> proc
+ *
+ *  Returns a curried proc based on the method. When the proc is called with a number of
+ *  arguments that is lower than the method's arity, then another curried proc is returned.
+ *  Only when enough arguments have been supplied to satisfy the method signature, will the
+ *  method actually be called.
+ *
+ *  The optional <i>arity</i> argument should be supplied when currying methods with
+ *  variable arguments to determine how many arguments are needed before the method is
+ *  called.
+ *
+ *     def foo(a,b,c)
+ *       [a, b, c]
+ *     end
+ *
+ *     proc  = self.method(:foo).curry
+ *     proc2 = proc.call(1, 2)          #=> #<Proc>
+ *     proc2.call(3)                    #=> [1,2,3]
+ *
+ *     def vararg(*args)
+ *       args
+ *     end
+ *
+ *     proc = self.method(:vararg).curry(4)
+ *     proc2 = proc.call(:x)      #=> #<Proc>
+ *     proc3 = proc2.call(:y, :z) #=> #<Proc>
+ *     proc3.call(:a)             #=> [:x, :y, :z, :a]
+ */
+
+static VALUE
+rb_method_curry(int argc, const VALUE *argv, VALUE self)
+{
+    VALUE proc = method_proc(self);
+    return proc_curry(argc, argv, proc);
+}
+
+/*
+ *  Document-class: LocalJumpError
+ *
+ *  Raised when Ruby can't yield as requested.
+ *
+ *  A typical scenario is attempting to yield when no block is given:
+ *
+ *     def call_block
+ *       yield 42
+ *     end
+ *     call_block
+ *
+ *  <em>raises the exception:</em>
+ *
+ *     LocalJumpError: no block given (yield)
+ *
+ *  A more subtle example:
+ *
+ *     def get_me_a_return
+ *       Proc.new { return 42 }
+ *     end
+ *     get_me_a_return.call
+ *
+ *  <em>raises the exception:</em>
+ *
+ *     LocalJumpError: unexpected return
+ */
+
+/*
+ *  Document-class: SystemStackError
+ *
+ *  Raised in case of a stack overflow.
+ *
+ *     def me_myself_and_i
+ *       me_myself_and_i
+ *     end
+ *     me_myself_and_i
+ *
+ *  <em>raises the exception:</em>
+ *
+ *    SystemStackError: stack level too deep
+ */
+
+/*
+ *  <code>Proc</code> objects are blocks of code that have been bound to
+ *  a set of local variables. Once bound, the code may be called in
+ *  different contexts and still access those variables.
+ *
+ *     def gen_times(factor)
+ *       return Proc.new {|n| n*factor }
+ *     end
+ *
+ *     times3 = gen_times(3)
+ *     times5 = gen_times(5)
+ *
+ *     times3.call(12)               #=> 36
+ *     times5.call(5)                #=> 25
+ *     times3.call(times5.call(4))   #=> 60
+ *
+ */
+
+void
+Init_Proc(void)
+{
+    /* Proc */
+    rb_cProc = rb_define_class("Proc", rb_cObject);
+    rb_undef_alloc_func(rb_cProc);
+    rb_define_singleton_method(rb_cProc, "new", rb_proc_s_new, -1);
+
+#if 0 /* incomplete. */
+    rb_add_method(rb_cProc, rb_intern("call"), VM_METHOD_TYPE_OPTIMIZED,
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+    rb_add_method(rb_cProc, rb_intern("[]"), VM_METHOD_TYPE_OPTIMIZED,
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+    rb_add_method(rb_cProc, rb_intern("==="), VM_METHOD_TYPE_OPTIMIZED,
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+    rb_add_method(rb_cProc, rb_intern("yield"), VM_METHOD_TYPE_OPTIMIZED,
+		  (void *)OPTIMIZED_METHOD_TYPE_CALL, 0);
+#else
+    rb_define_method(rb_cProc, "call", proc_call, -1);
+    rb_define_method(rb_cProc, "[]", proc_call, -1);
+    rb_define_method(rb_cProc, "===", proc_call, -1);
+    rb_define_method(rb_cProc, "yield", proc_call, -1);
+#endif
+    rb_define_method(rb_cProc, "to_proc", proc_to_proc, 0);
+    rb_define_method(rb_cProc, "arity", proc_arity, 0);
+    rb_define_method(rb_cProc, "clone", proc_clone, 0);
+    rb_define_method(rb_cProc, "dup", proc_dup, 0);
+    rb_define_method(rb_cProc, "hash", proc_hash, 0);
+    rb_define_method(rb_cProc, "to_s", proc_to_s, 0);
+    rb_define_alias(rb_cProc, "inspect", "to_s");
+    rb_define_method(rb_cProc, "lambda?", rb_proc_lambda_p, 0);
+    rb_define_method(rb_cProc, "binding", proc_binding, 0);
+    rb_define_method(rb_cProc, "curry", proc_curry, -1);
+    rb_define_method(rb_cProc, "source_location", rb_proc_location, 0);
+    rb_define_method(rb_cProc, "parameters", rb_proc_parameters, 0);
+
+    /* Exceptions */
+    rb_eLocalJumpError = rb_define_class("LocalJumpError", rb_eStandardError);
+    rb_define_method(rb_eLocalJumpError, "exit_value", localjump_xvalue, 0);
+    rb_define_method(rb_eLocalJumpError, "reason", localjump_reason, 0);
+
+    rb_eSysStackError = rb_define_class("SystemStackError", rb_eException);
+    rb_vm_register_special_exception(ruby_error_sysstack, rb_eSysStackError, "stack level too deep");
+
+    /* utility functions */
+    rb_define_global_function("proc", rb_block_proc, 0);
+    rb_define_global_function("lambda", rb_block_lambda, 0);
+
+    /* Method */
+    rb_cMethod = rb_define_class("Method", rb_cObject);
+    rb_undef_alloc_func(rb_cMethod);
+    rb_undef_method(CLASS_OF(rb_cMethod), "new");
+    rb_define_method(rb_cMethod, "==", method_eq, 1);
+    rb_define_method(rb_cMethod, "eql?", method_eq, 1);
+    rb_define_method(rb_cMethod, "hash", method_hash, 0);
+    rb_define_method(rb_cMethod, "clone", method_clone, 0);
+    rb_define_method(rb_cMethod, "call", rb_method_call, -1);
+    rb_define_method(rb_cMethod, "curry", rb_method_curry, -1);
+    rb_define_method(rb_cMethod, "[]", rb_method_call, -1);
+    rb_define_method(rb_cMethod, "arity", method_arity_m, 0);
+    rb_define_method(rb_cMethod, "inspect", method_inspect, 0);
+    rb_define_method(rb_cMethod, "to_s", method_inspect, 0);
+    rb_define_method(rb_cMethod, "to_proc", method_proc, 0);
+    rb_define_method(rb_cMethod, "receiver", method_receiver, 0);
+    rb_define_method(rb_cMethod, "name", method_name, 0);
+    rb_define_method(rb_cMethod, "original_name", method_original_name, 0);
+    rb_define_method(rb_cMethod, "owner", method_owner, 0);
+    rb_define_method(rb_cMethod, "unbind", method_unbind, 0);
+    rb_define_method(rb_cMethod, "source_location", rb_method_location, 0);
+    rb_define_method(rb_cMethod, "parameters", rb_method_parameters, 0);
+    rb_define_method(rb_cMethod, "super_method", method_super_method, 0);
+    rb_define_method(rb_mKernel, "method", rb_obj_method, 1);
+    rb_define_method(rb_mKernel, "public_method", rb_obj_public_method, 1);
+    rb_define_method(rb_mKernel, "singleton_method", rb_obj_singleton_method, 1);
+
+    /* UnboundMethod */
+    rb_cUnboundMethod = rb_define_class("UnboundMethod", rb_cObject);
+    rb_undef_alloc_func(rb_cUnboundMethod);
+    rb_undef_method(CLASS_OF(rb_cUnboundMethod), "new");
+    rb_define_method(rb_cUnboundMethod, "==", method_eq, 1);
+    rb_define_method(rb_cUnboundMethod, "eql?", method_eq, 1);
+    rb_define_method(rb_cUnboundMethod, "hash", method_hash, 0);
+    rb_define_method(rb_cUnboundMethod, "clone", method_clone, 0);
+    rb_define_method(rb_cUnboundMethod, "arity", method_arity_m, 0);
+    rb_define_method(rb_cUnboundMethod, "inspect", method_inspect, 0);
+    rb_define_method(rb_cUnboundMethod, "to_s", method_inspect, 0);
+    rb_define_method(rb_cUnboundMethod, "name", method_name, 0);
+    rb_define_method(rb_cUnboundMethod, "original_name", method_original_name, 0);
+    rb_define_method(rb_cUnboundMethod, "owner", method_owner, 0);
+    rb_define_method(rb_cUnboundMethod, "bind", umethod_bind, 1);
+    rb_define_method(rb_cUnboundMethod, "source_location", rb_method_location, 0);
+    rb_define_method(rb_cUnboundMethod, "parameters", rb_method_parameters, 0);
+    rb_define_method(rb_cUnboundMethod, "super_method", method_super_method, 0);
+
+    /* Module#*_method */
+    rb_define_method(rb_cModule, "instance_method", rb_mod_instance_method, 1);
+    rb_define_method(rb_cModule, "public_instance_method", rb_mod_public_instance_method, 1);
+    rb_define_private_method(rb_cModule, "define_method", rb_mod_define_method, -1);
+
+    /* Kernel */
+    rb_define_method(rb_mKernel, "define_singleton_method", rb_obj_define_method, -1);
+
+    rb_define_private_method(rb_singleton_class(rb_vm_top_self()),
+			     "define_method", top_define_method, -1);
+}
+
+/*
+ *  Objects of class <code>Binding</code> encapsulate the execution
+ *  context at some particular place in the code and retain this context
+ *  for future use. The variables, methods, value of <code>self</code>,
+ *  and possibly an iterator block that can be accessed in this context
+ *  are all retained. Binding objects can be created using
+ *  <code>Kernel#binding</code>, and are made available to the callback
+ *  of <code>Kernel#set_trace_func</code>.
+ *
+ *  These binding objects can be passed as the second argument of the
+ *  <code>Kernel#eval</code> method, establishing an environment for the
+ *  evaluation.
+ *
+ *     class Demo
+ *       def initialize(n)
+ *         @secret = n
+ *       end
+ *       def get_binding
+ *         return binding()
+ *       end
+ *     end
+ *
+ *     k1 = Demo.new(99)
+ *     b1 = k1.get_binding
+ *     k2 = Demo.new(-3)
+ *     b2 = k2.get_binding
+ *
+ *     eval("@secret", b1)   #=> 99
+ *     eval("@secret", b2)   #=> -3
+ *     eval("@secret")       #=> nil
+ *
+ *  Binding objects have no class-specific methods.
+ *
+ */
+
+void
+Init_Binding(void)
+{
+    rb_cBinding = rb_define_class("Binding", rb_cObject);
+    rb_undef_alloc_func(rb_cBinding);
+    rb_undef_method(CLASS_OF(rb_cBinding), "new");
+    rb_define_method(rb_cBinding, "clone", binding_clone, 0);
+    rb_define_method(rb_cBinding, "dup", binding_dup, 0);
+    rb_define_method(rb_cBinding, "eval", bind_eval, -1);
+    rb_define_method(rb_cBinding, "local_variables", bind_local_variables, 0);
+    rb_define_method(rb_cBinding, "frame_id", bind_cfp_get, 0); // pgbovine - get cfp address, which is a unique ID
+    rb_define_method(rb_cBinding, "local_variable_get", bind_local_variable_get, 1);
+    rb_define_method(rb_cBinding, "local_variable_set", bind_local_variable_set, 2);
+    rb_define_method(rb_cBinding, "local_variable_defined?", bind_local_variable_defined_p, 1);
+    rb_define_method(rb_cBinding, "receiver", bind_receiver, 0);
+    rb_define_global_function("binding", rb_f_binding, 0);
+}
diff --git a/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/vm.c b/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/vm.c
new file mode 100644
index 000000000..c7b5feefa
--- /dev/null
+++ b/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/vm.c
@@ -0,0 +1,3073 @@
+/**********************************************************************
+
+  vm.c -
+
+  $Author: naruse $
+
+  Copyright (C) 2004-2007 Koichi Sasada
+
+**********************************************************************/
+
+#include "internal.h"
+#include "ruby/vm.h"
+#include "ruby/st.h"
+
+#include "gc.h"
+#include "vm_core.h"
+#include "iseq.h"
+#include "eval_intern.h"
+#include "probes.h"
+#include "probes_helper.h"
+
+static inline VALUE *
+VM_EP_LEP(VALUE *ep)
+{
+    while (!VM_EP_LEP_P(ep)) {
+	ep = VM_EP_PREV_EP(ep);
+    }
+    return ep;
+}
+
+static inline rb_control_frame_t *
+rb_vm_search_cf_from_ep(const rb_thread_t * const th, rb_control_frame_t *cfp, const VALUE * const ep)
+{
+    if (!ep) {
+	return NULL;
+    }
+    else {
+	const rb_control_frame_t * const eocfp = RUBY_VM_END_CONTROL_FRAME(th); /* end of control frame pointer */
+
+	while (cfp < eocfp) {
+	    if (cfp->ep == ep) {
+		return cfp;
+	    }
+	    cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+	}
+
+	rb_bug("rb_vm_search_cf_from_ep: no corresponding cfp");
+    }
+}
+
+VALUE *
+rb_vm_ep_local_ep(VALUE *ep)
+{
+    return VM_EP_LEP(ep);
+}
+
+static inline VALUE *
+VM_CF_LEP(rb_control_frame_t *cfp)
+{
+    return VM_EP_LEP(cfp->ep);
+}
+
+static inline VALUE *
+VM_CF_PREV_EP(rb_control_frame_t * cfp)
+{
+    return VM_EP_PREV_EP((cfp)->ep);
+}
+
+static inline rb_block_t *
+VM_CF_BLOCK_PTR(rb_control_frame_t *cfp)
+{
+    VALUE *ep = VM_CF_LEP(cfp);
+    return VM_EP_BLOCK_PTR(ep);
+}
+
+rb_block_t *
+rb_vm_control_frame_block_ptr(rb_control_frame_t *cfp)
+{
+    return VM_CF_BLOCK_PTR(cfp);
+}
+
+#if VM_COLLECT_USAGE_DETAILS
+static void vm_collect_usage_operand(int insn, int n, VALUE op);
+static void vm_collect_usage_insn(int insn);
+static void vm_collect_usage_register(int reg, int isset);
+#endif
+
+static VALUE
+vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self, VALUE defined_class,
+	       int argc, const VALUE *argv, const rb_block_t *blockptr);
+
+static rb_serial_t ruby_vm_global_method_state = 1;
+static rb_serial_t ruby_vm_global_constant_state = 1;
+static rb_serial_t ruby_vm_class_serial = 1;
+
+#include "vm_insnhelper.h"
+#include "vm_insnhelper.c"
+#include "vm_exec.h"
+#include "vm_exec.c"
+
+#include "vm_method.c"
+#include "vm_eval.c"
+
+#include <assert.h>
+
+#define PROCDEBUG 0
+
+rb_serial_t
+rb_next_class_serial(void)
+{
+    return NEXT_CLASS_SERIAL();
+}
+
+VALUE rb_cRubyVM;
+VALUE rb_cThread;
+VALUE rb_cEnv;
+VALUE rb_mRubyVMFrozenCore;
+
+#define ruby_vm_redefined_flag GET_VM()->redefined_flag
+VALUE ruby_vm_const_missing_count = 0;
+rb_thread_t *ruby_current_thread = 0;
+rb_vm_t *ruby_current_vm = 0;
+rb_event_flag_t ruby_vm_event_flags;
+
+static void thread_free(void *ptr);
+
+void
+rb_vm_inc_const_missing_count(void)
+{
+    ruby_vm_const_missing_count +=1;
+}
+
+/*
+ *  call-seq:
+ *    RubyVM.stat -> Hash
+ *    RubyVM.stat(hsh) -> hsh
+ *    RubyVM.stat(Symbol) -> Numeric
+ *
+ *  Returns a Hash containing implementation-dependent counters inside the VM.
+ *
+ *  This hash includes information about method/constant cache serials:
+ *
+ *    {
+ *      :global_method_state=>251,
+ *      :global_constant_state=>481,
+ *      :class_serial=>9029
+ *    }
+ *
+ *  The contents of the hash are implementation specific and may be changed in
+ *  the future.
+ *
+ *  This method is only expected to work on C Ruby.
+ */
+
+static VALUE
+vm_stat(int argc, VALUE *argv, VALUE self)
+{
+    static VALUE sym_global_method_state, sym_global_constant_state, sym_class_serial;
+    VALUE arg = Qnil;
+    VALUE hash = Qnil, key = Qnil;
+
+    if (rb_scan_args(argc, argv, "01", &arg) == 1) {
+	if (SYMBOL_P(arg))
+	    key = arg;
+	else if (RB_TYPE_P(arg, T_HASH))
+	    hash = arg;
+	else
+	    rb_raise(rb_eTypeError, "non-hash or symbol given");
+    }
+    else if (NIL_P(arg)) {
+	hash = rb_hash_new();
+    }
+
+    if (sym_global_method_state == 0) {
+#define S(s) sym_##s = ID2SYM(rb_intern_const(#s))
+	S(global_method_state);
+	S(global_constant_state);
+	S(class_serial);
+#undef S
+    }
+
+#define SET(name, attr) \
+    if (key == sym_##name) \
+	return SERIALT2NUM(attr); \
+    else if (hash != Qnil) \
+	rb_hash_aset(hash, sym_##name, SERIALT2NUM(attr));
+
+    SET(global_method_state, ruby_vm_global_method_state);
+    SET(global_constant_state, ruby_vm_global_constant_state);
+    SET(class_serial, ruby_vm_class_serial);
+#undef SET
+
+    if (!NIL_P(key)) { /* matched key should return above */
+	rb_raise(rb_eArgError, "unknown key: %"PRIsVALUE, rb_sym2str(key));
+    }
+
+    return hash;
+}
+
+/* control stack frame */
+
+static void
+vm_set_top_stack(rb_thread_t * th, VALUE iseqval)
+{
+    rb_iseq_t *iseq;
+    GetISeqPtr(iseqval, iseq);
+
+    if (iseq->type != ISEQ_TYPE_TOP) {
+	rb_raise(rb_eTypeError, "Not a toplevel InstructionSequence");
+    }
+
+    /* for return */
+    vm_push_frame(th, iseq, VM_FRAME_MAGIC_TOP | VM_FRAME_FLAG_FINISH,
+		  th->top_self, rb_cObject, VM_ENVVAL_BLOCK_PTR(0),
+		  iseq->iseq_encoded, th->cfp->sp, iseq->local_size, 0, iseq->stack_max);
+}
+
+static void
+vm_set_eval_stack(rb_thread_t * th, VALUE iseqval, const NODE *cref, rb_block_t *base_block)
+{
+    rb_iseq_t *iseq;
+    GetISeqPtr(iseqval, iseq);
+
+    vm_push_frame(th, iseq, VM_FRAME_MAGIC_EVAL | VM_FRAME_FLAG_FINISH,
+		  base_block->self, base_block->klass,
+		  VM_ENVVAL_PREV_EP_PTR(base_block->ep), iseq->iseq_encoded,
+		  th->cfp->sp, iseq->local_size, 0, iseq->stack_max);
+
+    if (cref) {
+	th->cfp->ep[-1] = (VALUE)cref;
+    }
+}
+
+static void
+vm_set_main_stack(rb_thread_t *th, VALUE iseqval)
+{
+    VALUE toplevel_binding = rb_const_get(rb_cObject, rb_intern("TOPLEVEL_BINDING"));
+    rb_binding_t *bind;
+    rb_iseq_t *iseq;
+    rb_env_t *env;
+
+    GetBindingPtr(toplevel_binding, bind);
+    GetEnvPtr(bind->env, env);
+    vm_set_eval_stack(th, iseqval, 0, &env->block);
+
+    /* save binding */
+    GetISeqPtr(iseqval, iseq);
+    if (bind && iseq->local_size > 0) {
+	bind->env = rb_vm_make_env_object(th, th->cfp);
+    }
+}
+
+rb_control_frame_t *
+rb_vm_get_binding_creatable_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp)
+{
+    while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
+	if (cfp->iseq) {
+	    return (rb_control_frame_t *)cfp;
+	}
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+    }
+    return 0;
+}
+
+rb_control_frame_t *
+rb_vm_get_ruby_level_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp)
+{
+    while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
+	if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
+	    return (rb_control_frame_t *)cfp;
+	}
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+    }
+    return 0;
+}
+
+static rb_control_frame_t *
+vm_get_ruby_level_caller_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp)
+{
+    if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
+	return (rb_control_frame_t *)cfp;
+    }
+
+    cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+
+    while (!RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
+	if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
+	    return (rb_control_frame_t *)cfp;
+	}
+
+	if ((cfp->flag & VM_FRAME_FLAG_PASSED) == 0) {
+	    break;
+	}
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+    }
+    return 0;
+}
+
+void
+rb_vm_pop_cfunc_frame(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    const rb_method_entry_t *me = th->cfp->me;
+    EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, th->cfp->self, me->called_id, me->klass, Qnil);
+    RUBY_DTRACE_CMETHOD_RETURN_HOOK(th, me->klass, me->called_id);
+    vm_pop_frame(th);
+}
+
+void
+rb_vm_rewind_cfp(rb_thread_t *th, rb_control_frame_t *cfp)
+{
+    /* check skipped frame */
+    while (th->cfp != cfp) {
+#if VMDEBUG
+	printf("skipped frame: %s\n", vm_frametype_name(th->cfp));
+#endif
+	if (VM_FRAME_TYPE(th->cfp) != VM_FRAME_MAGIC_CFUNC) {
+	    vm_pop_frame(th);
+	}
+	else { /* unlikely path */
+	    rb_vm_pop_cfunc_frame();
+	}
+    }
+}
+
+/* obsolete */
+void
+rb_frame_pop(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    vm_pop_frame(th);
+}
+
+/* at exit */
+
+void
+ruby_vm_at_exit(void (*func)(rb_vm_t *))
+{
+    rb_ary_push((VALUE)&GET_VM()->at_exit, (VALUE)func);
+}
+
+static void
+ruby_vm_run_at_exit_hooks(rb_vm_t *vm)
+{
+    VALUE hook = (VALUE)&vm->at_exit;
+
+    while (RARRAY_LEN(hook) > 0) {
+	typedef void rb_vm_at_exit_func(rb_vm_t*);
+	rb_vm_at_exit_func *func = (rb_vm_at_exit_func*)rb_ary_pop(hook);
+	(*func)(vm);
+    }
+    rb_ary_free(hook);
+}
+
+/* Env */
+
+/*
+  env{
+    env[0] // special (block or prev env)
+    env[1] // env object
+  };
+ */
+
+#define ENV_IN_HEAP_P(th, env)  \
+  (!((th)->stack <= (env) && (env) < ((th)->stack + (th)->stack_size)))
+#define ENV_VAL(env)        ((env)[1])
+
+static void
+env_mark(void * const ptr)
+{
+    const rb_env_t * const env = ptr;
+
+    /* TODO: should mark more restricted range */
+    RUBY_GC_INFO("env->env\n");
+    rb_gc_mark_values((long)env->env_size, env->env);
+
+    RUBY_GC_INFO("env->prev_envval\n");
+    RUBY_MARK_UNLESS_NULL(env->prev_envval);
+    RUBY_MARK_UNLESS_NULL(env->block.self);
+    RUBY_MARK_UNLESS_NULL(env->block.proc);
+
+    if (env->block.iseq) {
+	if (BUILTIN_TYPE(env->block.iseq) == T_NODE) {
+	    RUBY_MARK_UNLESS_NULL((VALUE)env->block.iseq);
+	}
+	else {
+	    RUBY_MARK_UNLESS_NULL(env->block.iseq->self);
+	}
+    }
+    RUBY_MARK_LEAVE("env");
+}
+
+static size_t
+env_memsize(const void *ptr)
+{
+    const rb_env_t * const env = ptr;
+    size_t size = sizeof(rb_env_t);
+
+    size += (env->env_size - 1) * sizeof(VALUE);
+    return size;
+}
+
+static const rb_data_type_t env_data_type = {
+    "VM/env",
+    {env_mark, RUBY_TYPED_DEFAULT_FREE, env_memsize,},
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+static VALUE check_env_value(VALUE envval);
+
+static int
+check_env(rb_env_t * const env)
+{
+    fprintf(stderr, "---\n");
+    fprintf(stderr, "envptr: %p\n", (void *)&env->block.ep[0]);
+    fprintf(stderr, "envval: %10p ", (void *)env->block.ep[1]);
+    dp(env->block.ep[1]);
+    fprintf(stderr, "ep:    %10p\n", (void *)env->block.ep);
+    if (env->prev_envval) {
+	fprintf(stderr, ">>\n");
+	check_env_value(env->prev_envval);
+	fprintf(stderr, "<<\n");
+    }
+    return 1;
+}
+
+static VALUE
+check_env_value(VALUE envval)
+{
+    rb_env_t *env;
+    GetEnvPtr(envval, env);
+
+    if (check_env(env)) {
+	return envval;
+    }
+    rb_bug("invalid env");
+    return Qnil;		/* unreachable */
+}
+
+static VALUE
+vm_make_env_each(const rb_thread_t *const th, rb_control_frame_t *const cfp,
+		 VALUE *envptr, const VALUE *const endptr)
+{
+    VALUE envval, penvval = 0;
+    rb_env_t *env;
+    VALUE *nenvptr;
+    int i, local_size;
+
+    if (ENV_IN_HEAP_P(th, envptr)) {
+	return ENV_VAL(envptr);
+    }
+
+    if (envptr != endptr) {
+	VALUE *penvptr = GC_GUARDED_PTR_REF(*envptr);
+	rb_control_frame_t *pcfp = cfp;
+
+	if (ENV_IN_HEAP_P(th, penvptr)) {
+	    penvval = ENV_VAL(penvptr);
+	}
+	else {
+	    while (pcfp->ep != penvptr) {
+		pcfp++;
+		if (pcfp->ep == 0) {
+		    SDR();
+		    rb_bug("invalid ep");
+		}
+	    }
+	    penvval = vm_make_env_each(th, pcfp, penvptr, endptr);
+	    *envptr = VM_ENVVAL_PREV_EP_PTR(pcfp->ep);
+	}
+    }
+
+    if (!RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
+	local_size = 2;
+    }
+    else {
+	local_size = cfp->iseq->local_size;
+    }
+
+    /* allocate env */
+    env = xmalloc(sizeof(rb_env_t) + ((local_size + 1) * sizeof(VALUE)));
+    env->env_size = local_size + 1 + 1;
+    env->local_size = local_size;
+
+    for (i = 0; i <= local_size; i++) {
+	env->env[i] = envptr[-local_size + i];
+#if 0
+	fprintf(stderr, "%2d ", &envptr[-local_size + i] - th->stack); dp(env->env[i]);
+	if (RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
+	    /* clear value stack for GC */
+	    envptr[-local_size + i] = 0;
+	}
+#endif
+    }
+
+    /* be careful not to trigger GC after this */
+    envval = TypedData_Wrap_Struct(rb_cEnv, &env_data_type, env);
+
+   /*
+    * must happen after TypedData_Wrap_Struct to ensure penvval is markable
+    * in case object allocation triggers GC and clobbers penvval.
+    */
+    env->prev_envval = penvval;
+
+    *envptr = envval;		/* GC mark */
+    nenvptr = &env->env[i - 1];
+    nenvptr[1] = envval;	/* frame self */
+
+    /* reset ep in cfp */
+    cfp->ep = nenvptr;
+
+    /* as Binding */
+    env->block.self = cfp->self;
+    env->block.klass = 0;
+    env->block.ep = cfp->ep;
+    env->block.iseq = cfp->iseq;
+    env->block.proc = 0;
+
+    if (!RUBY_VM_NORMAL_ISEQ_P(cfp->iseq)) {
+	/* TODO */
+	env->block.iseq = 0;
+    }
+    return envval;
+}
+
+static int
+collect_local_variables_in_iseq(const rb_iseq_t *iseq, const struct local_var_list *vars)
+{
+    int i;
+    if (!iseq) return 0;
+    for (i = 0; i < iseq->local_table_size; i++) {
+	local_var_list_add(vars, iseq->local_table[i]);
+    }
+    return 1;
+}
+
+static void
+collect_local_variables_in_env(const rb_env_t *env, const struct local_var_list *vars)
+{
+
+    while (collect_local_variables_in_iseq(env->block.iseq, vars),
+	   env->prev_envval) {
+	GetEnvPtr(env->prev_envval, env);
+    }
+}
+
+static int
+vm_collect_local_variables_in_heap(rb_thread_t *th, const VALUE *ep, const struct local_var_list *vars)
+{
+    if (ENV_IN_HEAP_P(th, ep)) {
+	rb_env_t *env;
+	GetEnvPtr(ENV_VAL(ep), env);
+	collect_local_variables_in_env(env, vars);
+	return 1;
+    }
+    else {
+	return 0;
+    }
+}
+
+VALUE
+rb_vm_env_local_variables(VALUE envval)
+{
+    struct local_var_list vars;
+    const rb_env_t *env;
+
+    GetEnvPtr(envval, env);
+    local_var_list_init(&vars);
+    collect_local_variables_in_env(env, &vars);
+    return local_var_list_finish(&vars);
+}
+
+static VALUE vm_make_proc_from_block(rb_thread_t *th, rb_block_t *block);
+static VALUE vm_make_env_object(rb_thread_t * th, rb_control_frame_t *cfp, VALUE *blockprocptr);
+
+VALUE
+rb_vm_make_env_object(rb_thread_t * th, rb_control_frame_t *cfp)
+{
+    VALUE blockprocval;
+    return vm_make_env_object(th, cfp, &blockprocval);
+}
+
+static VALUE
+vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp, VALUE *blockprocptr)
+{
+    VALUE envval;
+    VALUE *lep = VM_CF_LEP(cfp);
+    rb_block_t *blockptr = VM_EP_BLOCK_PTR(lep);
+
+    if (blockptr) {
+	VALUE blockprocval = vm_make_proc_from_block(th, blockptr);
+	rb_proc_t *p;
+	GetProcPtr(blockprocval, p);
+	lep[0] = VM_ENVVAL_BLOCK_PTR(&p->block);
+	*blockprocptr = blockprocval;
+    }
+
+    envval = vm_make_env_each(th, cfp, cfp->ep, lep);
+
+    if (PROCDEBUG) {
+	check_env_value(envval);
+    }
+
+    return envval;
+}
+
+void
+rb_vm_stack_to_heap(rb_thread_t *th)
+{
+    rb_control_frame_t *cfp = th->cfp;
+    while ((cfp = rb_vm_get_binding_creatable_next_cfp(th, cfp)) != 0) {
+	rb_vm_make_env_object(th, cfp);
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+    }
+}
+
+/* Proc */
+
+static VALUE
+vm_make_proc_from_block(rb_thread_t *th, rb_block_t *block)
+{
+    if (!block->proc) {
+	block->proc = rb_vm_make_proc(th, block, rb_cProc);
+    }
+    return block->proc;
+}
+
+static inline VALUE
+rb_proc_alloc(VALUE klass, const rb_block_t *block,
+		VALUE envval, VALUE blockprocval,
+		int8_t safe_level, int8_t is_from_method, int8_t is_lambda)
+{
+    VALUE procval;
+    rb_proc_t *proc = ALLOC(rb_proc_t);
+
+    proc->block = *block;
+    proc->safe_level = safe_level;
+    proc->is_from_method = is_from_method;
+    proc->is_lambda = is_lambda;
+
+    procval = rb_proc_wrap(klass, proc);
+
+    /*
+     * ensure VALUEs are markable here as rb_proc_wrap may trigger allocation
+     * and clobber envval + blockprocval
+     */
+    proc->envval = envval;
+    proc->blockprocval = blockprocval;
+
+    return procval;
+}
+
+VALUE
+rb_vm_make_proc(rb_thread_t *th, const rb_block_t *block, VALUE klass)
+{
+    return rb_vm_make_proc_lambda(th, block, klass, 0);
+}
+
+VALUE
+rb_vm_make_proc_lambda(rb_thread_t *th, const rb_block_t *block, VALUE klass, int8_t is_lambda)
+{
+    VALUE procval, envval, blockprocval = 0;
+    rb_control_frame_t *cfp = RUBY_VM_GET_CFP_FROM_BLOCK_PTR(block);
+
+    if (block->proc) {
+	rb_bug("rb_vm_make_proc: Proc value is already created.");
+    }
+
+    envval = vm_make_env_object(th, cfp, &blockprocval);
+
+    if (PROCDEBUG) {
+	check_env_value(envval);
+    }
+
+    procval = rb_proc_alloc(klass, block, envval, blockprocval,
+			    (int8_t)th->safe_level, 0, is_lambda);
+
+    if (VMDEBUG) {
+	if (th->stack < block->ep && block->ep < th->stack + th->stack_size) {
+	    rb_bug("invalid ptr: block->ep");
+	}
+    }
+
+    return procval;
+}
+
+/* Binding */
+
+VALUE
+rb_vm_make_binding(rb_thread_t *th, const rb_control_frame_t *src_cfp)
+{
+    rb_control_frame_t *cfp = rb_vm_get_binding_creatable_next_cfp(th, src_cfp);
+    rb_control_frame_t *ruby_level_cfp = rb_vm_get_ruby_level_next_cfp(th, src_cfp);
+    VALUE bindval, envval;
+    rb_binding_t *bind;
+    VALUE blockprocval = 0;
+
+    if (cfp == 0 || ruby_level_cfp == 0) {
+	rb_raise(rb_eRuntimeError, "Can't create Binding Object on top of Fiber.");
+    }
+
+    while (1) {
+	envval = vm_make_env_object(th, cfp, &blockprocval);
+	if (cfp == ruby_level_cfp) {
+	    break;
+	}
+	cfp = rb_vm_get_binding_creatable_next_cfp(th, RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp));
+    }
+
+    bindval = rb_binding_alloc(rb_cBinding);
+    GetBindingPtr(bindval, bind);
+    bind->env = envval;
+    bind->path = ruby_level_cfp->iseq->location.path;
+    bind->blockprocval = blockprocval;
+    bind->first_lineno = rb_vm_get_sourceline(ruby_level_cfp);
+    bind->cfp = (unsigned long)cfp; // pgbovine - get a unique ID for this frame
+
+    return bindval;
+}
+
+VALUE *
+rb_binding_add_dynavars(rb_binding_t *bind, int dyncount, const ID *dynvars)
+{
+    VALUE envval = bind->env, path = bind->path, iseqval;
+    rb_env_t *env;
+    rb_block_t *base_block;
+    rb_thread_t *th = GET_THREAD();
+    rb_iseq_t *base_iseq;
+    NODE *node = 0;
+    ID minibuf[4], *dyns = minibuf;
+    VALUE idtmp = 0;
+    VALUE blockprocval = 0;
+
+    if (dyncount < 0) return 0;
+
+    GetEnvPtr(envval, env);
+
+    base_block = &env->block;
+    base_iseq = base_block->iseq;
+
+    if (dyncount >= numberof(minibuf)) dyns = ALLOCV_N(ID, idtmp, dyncount + 1);
+
+    dyns[0] = dyncount;
+    MEMCPY(dyns + 1, dynvars, ID, dyncount);
+    node = NEW_NODE(NODE_SCOPE, dyns, 0, 0);
+
+    iseqval = rb_iseq_new(node, base_iseq->location.label, path, path,
+			  base_iseq->self, ISEQ_TYPE_EVAL);
+    node->u1.tbl = 0; /* reset table */
+    ALLOCV_END(idtmp);
+
+    vm_set_eval_stack(th, iseqval, 0, base_block);
+    bind->env = vm_make_env_object(th, th->cfp, &blockprocval);
+    bind->blockprocval = blockprocval;
+    vm_pop_frame(th);
+    GetEnvPtr(bind->env, env);
+
+    return env->env;
+}
+
+/* C -> Ruby: block */
+
+static inline VALUE
+invoke_block_from_c(rb_thread_t *th, const rb_block_t *block,
+		    VALUE self, int argc, const VALUE *argv,
+		    const rb_block_t *blockptr, const NODE *cref,
+		    VALUE defined_class, int splattable)
+{
+    if (SPECIAL_CONST_P(block->iseq)) {
+	return Qnil;
+    }
+    else if (BUILTIN_TYPE(block->iseq) != T_NODE) {
+	VALUE ret;
+	const rb_iseq_t *iseq = block->iseq;
+	const rb_control_frame_t *cfp;
+	int i, opt_pc, arg_size = iseq->param.size;
+	int type = block_proc_is_lambda(block->proc) ? VM_FRAME_MAGIC_LAMBDA : VM_FRAME_MAGIC_BLOCK;
+	const rb_method_entry_t *me = th->passed_bmethod_me;
+	th->passed_bmethod_me = 0;
+	cfp = th->cfp;
+
+	for (i=0; i<argc; i++) {
+	    cfp->sp[i] = argv[i];
+	}
+
+	opt_pc = vm_yield_setup_args(th, iseq, argc, cfp->sp, blockptr,
+				     (type == VM_FRAME_MAGIC_LAMBDA ? (splattable ? arg_setup_lambda : arg_setup_method) : arg_setup_block));
+
+	if (me != 0) {
+	    /* bmethod */
+	    vm_push_frame(th, iseq, type | VM_FRAME_FLAG_FINISH | VM_FRAME_FLAG_BMETHOD,
+			  self, defined_class,
+			  VM_ENVVAL_PREV_EP_PTR(block->ep),
+			  iseq->iseq_encoded + opt_pc,
+			  cfp->sp + arg_size, iseq->local_size - arg_size,
+			  me, iseq->stack_max);
+
+	    RUBY_DTRACE_METHOD_ENTRY_HOOK(th, me->klass, me->called_id);
+	    EXEC_EVENT_HOOK(th, RUBY_EVENT_CALL, self, me->called_id, me->klass, Qnil);
+	}
+	else {
+	    vm_push_frame(th, iseq, type | VM_FRAME_FLAG_FINISH,
+			  self, defined_class,
+			  VM_ENVVAL_PREV_EP_PTR(block->ep),
+			  iseq->iseq_encoded + opt_pc,
+			  cfp->sp + arg_size, iseq->local_size - arg_size,
+			  0, iseq->stack_max);
+	}
+
+	if (cref) {
+	    th->cfp->ep[-1] = (VALUE)cref;
+	}
+
+	ret = vm_exec(th);
+
+	if (me) {
+	    /* bmethod */
+	    EXEC_EVENT_HOOK(th, RUBY_EVENT_RETURN, self, me->called_id, me->klass, ret);
+	    RUBY_DTRACE_METHOD_RETURN_HOOK(th, me->klass, me->called_id);
+	}
+
+	return ret;
+    }
+    else {
+	return vm_yield_with_cfunc(th, block, self, defined_class,
+				   argc, argv, blockptr);
+    }
+}
+
+static inline const rb_block_t *
+check_block(rb_thread_t *th)
+{
+    const rb_block_t *blockptr = VM_CF_BLOCK_PTR(th->cfp);
+
+    if (blockptr == 0) {
+	rb_vm_localjump_error("no block given", Qnil, 0);
+    }
+
+    return blockptr;
+}
+
+static inline VALUE
+vm_yield_with_cref(rb_thread_t *th, int argc, const VALUE *argv, const NODE *cref)
+{
+    const rb_block_t *blockptr = check_block(th);
+    return invoke_block_from_c(th, blockptr, blockptr->self, argc, argv, 0, cref,
+			       blockptr->klass, 1);
+}
+
+static inline VALUE
+vm_yield(rb_thread_t *th, int argc, const VALUE *argv)
+{
+    const rb_block_t *blockptr = check_block(th);
+    return invoke_block_from_c(th, blockptr, blockptr->self, argc, argv, 0, 0,
+			       blockptr->klass, 1);
+}
+
+static inline VALUE
+vm_yield_with_block(rb_thread_t *th, int argc, const VALUE *argv, const rb_block_t *blockargptr)
+{
+    const rb_block_t *blockptr = check_block(th);
+    return invoke_block_from_c(th, blockptr, blockptr->self, argc, argv, blockargptr, 0,
+			       blockptr->klass, 1);
+}
+
+static VALUE
+vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self, VALUE defined_class,
+	       int argc, const VALUE *argv, const rb_block_t *blockptr)
+{
+    VALUE val = Qundef;
+    int state;
+    volatile int stored_safe = th->safe_level;
+
+    TH_PUSH_TAG(th);
+    if ((state = EXEC_TAG()) == 0) {
+	if (!proc->is_from_method) {
+	    th->safe_level = proc->safe_level;
+	}
+	val = invoke_block_from_c(th, &proc->block, self, argc, argv, blockptr, 0,
+				  defined_class, 0);
+    }
+    TH_POP_TAG();
+
+    if (!proc->is_from_method) {
+	th->safe_level = stored_safe;
+    }
+
+    if (state) {
+	JUMP_TAG(state);
+    }
+    return val;
+}
+
+VALUE
+rb_vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc,
+		  int argc, const VALUE *argv, const rb_block_t *blockptr)
+{
+    return vm_invoke_proc(th, proc, proc->block.self, proc->block.klass,
+			  argc, argv, blockptr);
+}
+
+/* special variable */
+
+static rb_control_frame_t *
+vm_normal_frame(rb_thread_t *th, rb_control_frame_t *cfp)
+{
+    while (cfp->pc == 0) {
+	cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+	if (RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp)) {
+	    return 0;
+	}
+    }
+    return cfp;
+}
+
+static VALUE
+vm_cfp_svar_get(rb_thread_t *th, rb_control_frame_t *cfp, VALUE key)
+{
+    cfp = vm_normal_frame(th, cfp);
+    return lep_svar_get(th, cfp ? VM_CF_LEP(cfp) : 0, key);
+}
+
+static void
+vm_cfp_svar_set(rb_thread_t *th, rb_control_frame_t *cfp, VALUE key, const VALUE val)
+{
+    cfp = vm_normal_frame(th, cfp);
+    lep_svar_set(th, cfp ? VM_CF_LEP(cfp) : 0, key, val);
+}
+
+static VALUE
+vm_svar_get(VALUE key)
+{
+    rb_thread_t *th = GET_THREAD();
+    return vm_cfp_svar_get(th, th->cfp, key);
+}
+
+static void
+vm_svar_set(VALUE key, VALUE val)
+{
+    rb_thread_t *th = GET_THREAD();
+    vm_cfp_svar_set(th, th->cfp, key, val);
+}
+
+VALUE
+rb_backref_get(void)
+{
+    return vm_svar_get(1);
+}
+
+void
+rb_backref_set(VALUE val)
+{
+    vm_svar_set(1, val);
+}
+
+VALUE
+rb_lastline_get(void)
+{
+    return vm_svar_get(0);
+}
+
+void
+rb_lastline_set(VALUE val)
+{
+    vm_svar_set(0, val);
+}
+
+/* misc */
+
+VALUE
+rb_sourcefilename(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
+
+    if (cfp) {
+	return cfp->iseq->location.path;
+    }
+    else {
+	return Qnil;
+    }
+}
+
+const char *
+rb_sourcefile(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
+
+    if (cfp) {
+	return RSTRING_PTR(cfp->iseq->location.path);
+    }
+    else {
+	return 0;
+    }
+}
+
+int
+rb_sourceline(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
+
+    if (cfp) {
+	return rb_vm_get_sourceline(cfp);
+    }
+    else {
+	return 0;
+    }
+}
+
+NODE *
+rb_vm_cref(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
+
+    if (cfp == 0) {
+	return NULL;
+    }
+    return rb_vm_get_cref(cfp->iseq, cfp->ep);
+}
+
+const NODE *
+rb_vm_cref_in_context(VALUE self, VALUE cbase)
+{
+    rb_thread_t *th = GET_THREAD();
+    const rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
+    const NODE *cref;
+    if (cfp->self != self) return NULL;
+    cref = rb_vm_get_cref(cfp->iseq, cfp->ep);
+    if (cref->nd_clss != cbase) return NULL;
+    return cref;
+}
+
+#if 0
+void
+debug_cref(NODE *cref)
+{
+    while (cref) {
+	dp(cref->nd_clss);
+	printf("%ld\n", cref->nd_visi);
+	cref = cref->nd_next;
+    }
+}
+#endif
+
+VALUE
+rb_vm_cbase(void)
+{
+    rb_thread_t *th = GET_THREAD();
+    rb_control_frame_t *cfp = rb_vm_get_ruby_level_next_cfp(th, th->cfp);
+
+    if (cfp == 0) {
+	rb_raise(rb_eRuntimeError, "Can't call on top of Fiber or Thread");
+    }
+    return vm_get_cbase(cfp->iseq, cfp->ep);
+}
+
+/* jump */
+
+static VALUE
+make_localjump_error(const char *mesg, VALUE value, int reason)
+{
+    extern VALUE rb_eLocalJumpError;
+    VALUE exc = rb_exc_new2(rb_eLocalJumpError, mesg);
+    ID id;
+
+    switch (reason) {
+      case TAG_BREAK:
+	CONST_ID(id, "break");
+	break;
+      case TAG_REDO:
+	CONST_ID(id, "redo");
+	break;
+      case TAG_RETRY:
+	CONST_ID(id, "retry");
+	break;
+      case TAG_NEXT:
+	CONST_ID(id, "next");
+	break;
+      case TAG_RETURN:
+	CONST_ID(id, "return");
+	break;
+      default:
+	CONST_ID(id, "noreason");
+	break;
+    }
+    rb_iv_set(exc, "@exit_value", value);
+    rb_iv_set(exc, "@reason", ID2SYM(id));
+    return exc;
+}
+
+void
+rb_vm_localjump_error(const char *mesg, VALUE value, int reason)
+{
+    VALUE exc = make_localjump_error(mesg, value, reason);
+    rb_exc_raise(exc);
+}
+
+VALUE
+rb_vm_make_jump_tag_but_local_jump(int state, VALUE val)
+{
+    VALUE result = Qnil;
+
+    if (val == Qundef) {
+	val = GET_THREAD()->tag->retval;
+    }
+    switch (state) {
+      case 0:
+	break;
+      case TAG_RETURN:
+	result = make_localjump_error("unexpected return", val, state);
+	break;
+      case TAG_BREAK:
+	result = make_localjump_error("unexpected break", val, state);
+	break;
+      case TAG_NEXT:
+	result = make_localjump_error("unexpected next", val, state);
+	break;
+      case TAG_REDO:
+	result = make_localjump_error("unexpected redo", Qnil, state);
+	break;
+      case TAG_RETRY:
+	result = make_localjump_error("retry outside of rescue clause", Qnil, state);
+	break;
+      default:
+	break;
+    }
+    return result;
+}
+
+void
+rb_vm_jump_tag_but_local_jump(int state)
+{
+    VALUE exc = rb_vm_make_jump_tag_but_local_jump(state, Qundef);
+    if (!NIL_P(exc)) rb_exc_raise(exc);
+    JUMP_TAG(state);
+}
+
+NORETURN(static void vm_iter_break(rb_thread_t *th, VALUE val));
+
+static void
+vm_iter_break(rb_thread_t *th, VALUE val)
+{
+    rb_control_frame_t *cfp = th->cfp;
+    VALUE *ep = VM_CF_PREV_EP(cfp);
+    rb_control_frame_t *target_cfp = rb_vm_search_cf_from_ep(th, cfp, ep);
+
+    th->state = TAG_BREAK;
+    th->errinfo = (VALUE)NEW_THROW_OBJECT(val, (VALUE)target_cfp, TAG_BREAK);
+    TH_JUMP_TAG(th, TAG_BREAK);
+}
+
+void
+rb_iter_break(void)
+{
+    vm_iter_break(GET_THREAD(), Qnil);
+}
+
+void
+rb_iter_break_value(VALUE val)
+{
+    vm_iter_break(GET_THREAD(), val);
+}
+
+/* optimization: redefine management */
+
+static st_table *vm_opt_method_table = 0;
+
+static int
+vm_redefinition_check_flag(VALUE klass)
+{
+    if (klass == rb_cFixnum) return FIXNUM_REDEFINED_OP_FLAG;
+    if (klass == rb_cFloat)  return FLOAT_REDEFINED_OP_FLAG;
+    if (klass == rb_cString) return STRING_REDEFINED_OP_FLAG;
+    if (klass == rb_cArray)  return ARRAY_REDEFINED_OP_FLAG;
+    if (klass == rb_cHash)   return HASH_REDEFINED_OP_FLAG;
+    if (klass == rb_cBignum) return BIGNUM_REDEFINED_OP_FLAG;
+    if (klass == rb_cSymbol) return SYMBOL_REDEFINED_OP_FLAG;
+    if (klass == rb_cTime)   return TIME_REDEFINED_OP_FLAG;
+    if (klass == rb_cRegexp) return REGEXP_REDEFINED_OP_FLAG;
+    return 0;
+}
+
+static void
+rb_vm_check_redefinition_opt_method(const rb_method_entry_t *me, VALUE klass)
+{
+    st_data_t bop;
+    if (!me->def || me->def->type == VM_METHOD_TYPE_CFUNC) {
+	if (st_lookup(vm_opt_method_table, (st_data_t)me, &bop)) {
+	    int flag = vm_redefinition_check_flag(klass);
+
+	    ruby_vm_redefined_flag[bop] |= flag;
+	}
+    }
+}
+
+static int
+check_redefined_method(st_data_t key, st_data_t value, st_data_t data)
+{
+    ID mid = (ID)key;
+    rb_method_entry_t *me = (rb_method_entry_t *)value;
+    VALUE klass = (VALUE)data;
+    rb_method_entry_t *newme = rb_method_entry(klass, mid, NULL);
+
+    if (newme != me)
+	rb_vm_check_redefinition_opt_method(me, me->klass);
+    return ST_CONTINUE;
+}
+
+void
+rb_vm_check_redefinition_by_prepend(VALUE klass)
+{
+    if (!vm_redefinition_check_flag(klass)) return;
+    st_foreach(RCLASS_M_TBL(RCLASS_ORIGIN(klass)), check_redefined_method,
+	       (st_data_t)klass);
+}
+
+static void
+add_opt_method(VALUE klass, ID mid, VALUE bop)
+{
+    rb_method_entry_t *me = rb_method_entry_at(klass, mid);
+
+    if (me && me->def &&
+	me->def->type == VM_METHOD_TYPE_CFUNC) {
+	st_insert(vm_opt_method_table, (st_data_t)me, (st_data_t)bop);
+    }
+    else {
+	rb_bug("undefined optimized method: %s", rb_id2name(mid));
+    }
+}
+
+static void
+vm_init_redefined_flag(void)
+{
+    ID mid;
+    VALUE bop;
+
+    vm_opt_method_table = st_init_numtable();
+
+#define OP(mid_, bop_) (mid = id##mid_, bop = BOP_##bop_, ruby_vm_redefined_flag[bop] = 0)
+#define C(k) add_opt_method(rb_c##k, mid, bop)
+    OP(PLUS, PLUS), (C(Fixnum), C(Float), C(String), C(Array));
+    OP(MINUS, MINUS), (C(Fixnum), C(Float));
+    OP(MULT, MULT), (C(Fixnum), C(Float));
+    OP(DIV, DIV), (C(Fixnum), C(Float));
+    OP(MOD, MOD), (C(Fixnum), C(Float));
+    OP(Eq, EQ), (C(Fixnum), C(Float), C(String));
+    OP(Eqq, EQQ), (C(Fixnum), C(Bignum), C(Float), C(Symbol), C(String));
+    OP(LT, LT), (C(Fixnum), C(Float));
+    OP(LE, LE), (C(Fixnum), C(Float));
+    OP(GT, GT), (C(Fixnum), C(Float));
+    OP(GE, GE), (C(Fixnum), C(Float));
+    OP(LTLT, LTLT), (C(String), C(Array));
+    OP(AREF, AREF), (C(Array), C(Hash));
+    OP(ASET, ASET), (C(Array), C(Hash));
+    OP(Length, LENGTH), (C(Array), C(String), C(Hash));
+    OP(Size, SIZE), (C(Array), C(String), C(Hash));
+    OP(EmptyP, EMPTY_P), (C(Array), C(String), C(Hash));
+    OP(Succ, SUCC), (C(Fixnum), C(String), C(Time));
+    OP(EqTilde, MATCH), (C(Regexp), C(String));
+    OP(Freeze, FREEZE), (C(String));
+#undef C
+#undef OP
+}
+
+/* for vm development */
+
+#if VMDEBUG
+static const char *
+vm_frametype_name(const rb_control_frame_t *cfp)
+{
+    switch (VM_FRAME_TYPE(cfp)) {
+      case VM_FRAME_MAGIC_METHOD: return "method";
+      case VM_FRAME_MAGIC_BLOCK:  return "block";
+      case VM_FRAME_MAGIC_CLASS:  return "class";
+      case VM_FRAME_MAGIC_TOP:    return "top";
+      case VM_FRAME_MAGIC_CFUNC:  return "cfunc";
+      case VM_FRAME_MAGIC_PROC:   return "proc";
+      case VM_FRAME_MAGIC_IFUNC:  return "ifunc";
+      case VM_FRAME_MAGIC_EVAL:   return "eval";
+      case VM_FRAME_MAGIC_LAMBDA: return "lambda";
+      case VM_FRAME_MAGIC_RESCUE: return "rescue";
+      default:
+	rb_bug("unknown frame");
+    }
+}
+#endif
+
+/* evaluator body */
+
+/*                  finish
+  VMe (h1)          finish
+    VM              finish F1 F2
+      cfunc         finish F1 F2 C1
+        rb_funcall  finish F1 F2 C1
+          VMe       finish F1 F2 C1
+            VM      finish F1 F2 C1 F3
+
+  F1 - F3 : pushed by VM
+  C1      : pushed by send insn (CFUNC)
+
+  struct CONTROL_FRAME {
+    VALUE *pc;                  // cfp[0], program counter
+    VALUE *sp;                  // cfp[1], stack pointer
+    VALUE *bp;                  // cfp[2], base pointer
+    rb_iseq_t *iseq;            // cfp[3], iseq
+    VALUE flag;                 // cfp[4], magic
+    VALUE self;                 // cfp[5], self
+    VALUE *ep;                  // cfp[6], env pointer
+    rb_iseq_t * block_iseq;     // cfp[7], block iseq
+    VALUE proc;                 // cfp[8], always 0
+  };
+
+  struct BLOCK {
+    VALUE self;
+    VALUE *ep;
+    rb_iseq_t *block_iseq;
+    VALUE proc;
+  };
+
+  struct METHOD_CONTROL_FRAME {
+    rb_control_frame_t frame;
+  };
+
+  struct METHOD_FRAME {
+    VALUE arg0;
+    ...
+    VALUE argM;
+    VALUE param0;
+    ...
+    VALUE paramN;
+    VALUE cref;
+    VALUE special;                         // lep [1]
+    struct block_object *block_ptr | 0x01; // lep [0]
+  };
+
+  struct BLOCK_CONTROL_FRAME {
+    rb_control_frame_t frame;
+  };
+
+  struct BLOCK_FRAME {
+    VALUE arg0;
+    ...
+    VALUE argM;
+    VALUE param0;
+    ...
+    VALUE paramN;
+    VALUE cref;
+    VALUE *(prev_ptr | 0x01); // ep[0]
+  };
+
+  struct CLASS_CONTROL_FRAME {
+    rb_control_frame_t frame;
+  };
+
+  struct CLASS_FRAME {
+    VALUE param0;
+    ...
+    VALUE paramN;
+    VALUE cref;
+    VALUE prev_ep; // for frame jump
+  };
+
+  struct C_METHOD_CONTROL_FRAME {
+    VALUE *pc;                       // 0
+    VALUE *sp;                       // stack pointer
+    VALUE *bp;                       // base pointer (used in exception)
+    rb_iseq_t *iseq;                 // cmi
+    VALUE magic;                     // C_METHOD_FRAME
+    VALUE self;                      // ?
+    VALUE *ep;                       // ep == lep
+    rb_iseq_t * block_iseq;          //
+    VALUE proc;                      // always 0
+  };
+
+  struct C_BLOCK_CONTROL_FRAME {
+    VALUE *pc;                       // point only "finish" insn
+    VALUE *sp;                       // sp
+    rb_iseq_t *iseq;                 // ?
+    VALUE magic;                     // C_METHOD_FRAME
+    VALUE self;                      // needed?
+    VALUE *ep;                       // ep
+    rb_iseq_t * block_iseq; // 0
+  };
+ */
+
+
+static VALUE
+vm_exec(rb_thread_t *th)
+{
+    int state;
+    VALUE result, err;
+    VALUE initial = 0;
+
+    TH_PUSH_TAG(th);
+    _tag.retval = Qnil;
+    if ((state = EXEC_TAG()) == 0) {
+      vm_loop_start:
+	result = vm_exec_core(th, initial);
+	if ((state = th->state) != 0) {
+	    err = result;
+	    th->state = 0;
+	    goto exception_handler;
+	}
+    }
+    else {
+	int i;
+	struct iseq_catch_table_entry *entry;
+	struct iseq_catch_table *ct;
+	unsigned long epc, cont_pc, cont_sp;
+	VALUE catch_iseqval;
+	rb_control_frame_t *cfp;
+	VALUE type;
+	rb_control_frame_t *escape_cfp;
+
+	err = th->errinfo;
+
+      exception_handler:
+	cont_pc = cont_sp = catch_iseqval = 0;
+
+	while (th->cfp->pc == 0 || th->cfp->iseq == 0) {
+	    if (UNLIKELY(VM_FRAME_TYPE(th->cfp) == VM_FRAME_MAGIC_CFUNC)) {
+		const rb_method_entry_t *me = th->cfp->me;
+		EXEC_EVENT_HOOK(th, RUBY_EVENT_C_RETURN, th->cfp->self, me->called_id, me->klass, Qnil);
+		RUBY_DTRACE_METHOD_RETURN_HOOK(th, me->klass, me->called_id);
+	    }
+	    th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
+	}
+
+	cfp = th->cfp;
+	epc = cfp->pc - cfp->iseq->iseq_encoded;
+
+	escape_cfp = NULL;
+	if (state == TAG_BREAK || state == TAG_RETURN) {
+	    escape_cfp = GET_THROWOBJ_CATCH_POINT(err);
+
+	    if (cfp == escape_cfp) {
+		if (state == TAG_RETURN) {
+		    if (!VM_FRAME_TYPE_FINISH_P(cfp)) {
+			SET_THROWOBJ_CATCH_POINT(err, (VALUE)(cfp + 1));
+			SET_THROWOBJ_STATE(err, state = TAG_BREAK);
+		    }
+		    else {
+			ct = cfp->iseq->catch_table;
+			if (ct) for (i = 0; i < ct->size; i++) {
+			    entry = &ct->entries[i];
+			    if (entry->start < epc && entry->end >= epc) {
+				if (entry->type == CATCH_TYPE_ENSURE) {
+				    catch_iseqval = entry->iseq;
+				    cont_pc = entry->cont;
+				    cont_sp = entry->sp;
+				    break;
+				}
+			    }
+			}
+			if (!catch_iseqval) {
+			    result = GET_THROWOBJ_VAL(err);
+			    th->errinfo = Qnil;
+
+			    switch (VM_FRAME_TYPE(cfp)) {
+			      case VM_FRAME_MAGIC_LAMBDA:
+				EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_B_RETURN, th->cfp->self, 0, 0, Qnil);
+				break;
+			    }
+
+			    vm_pop_frame(th);
+			    goto finish_vme;
+			}
+		    }
+		    /* through */
+		}
+		else {
+		    /* TAG_BREAK */
+#if OPT_STACK_CACHING
+		    initial = (GET_THROWOBJ_VAL(err));
+#else
+		    *th->cfp->sp++ = (GET_THROWOBJ_VAL(err));
+#endif
+		    th->errinfo = Qnil;
+		    goto vm_loop_start;
+		}
+	    }
+	}
+
+	if (state == TAG_RAISE) {
+	    ct = cfp->iseq->catch_table;
+	    if (ct) for (i = 0; i < ct->size; i++) {
+		entry = &ct->entries[i];
+		if (entry->start < epc && entry->end >= epc) {
+
+		    if (entry->type == CATCH_TYPE_RESCUE ||
+			entry->type == CATCH_TYPE_ENSURE) {
+			catch_iseqval = entry->iseq;
+			cont_pc = entry->cont;
+			cont_sp = entry->sp;
+			break;
+		    }
+		}
+	    }
+	}
+	else if (state == TAG_RETRY) {
+	    ct = cfp->iseq->catch_table;
+	    if (ct) for (i = 0; i < ct->size; i++) {
+		entry = &ct->entries[i];
+		if (entry->start < epc && entry->end >= epc) {
+
+		    if (entry->type == CATCH_TYPE_ENSURE) {
+			catch_iseqval = entry->iseq;
+			cont_pc = entry->cont;
+			cont_sp = entry->sp;
+			break;
+		    }
+		    else if (entry->type == CATCH_TYPE_RETRY) {
+			rb_control_frame_t *escape_cfp;
+			escape_cfp = GET_THROWOBJ_CATCH_POINT(err);
+			if (cfp == escape_cfp) {
+			    cfp->pc = cfp->iseq->iseq_encoded + entry->cont;
+			    th->errinfo = Qnil;
+			    goto vm_loop_start;
+			}
+		    }
+		}
+	    }
+	}
+	else if (state == TAG_BREAK && !escape_cfp) {
+	    type = CATCH_TYPE_BREAK;
+
+	  search_restart_point:
+	    ct = cfp->iseq->catch_table;
+	    if (ct) for (i = 0; i < ct->size; i++) {
+		entry = &ct->entries[i];
+
+		if (entry->start < epc && entry->end >= epc) {
+		    if (entry->type == CATCH_TYPE_ENSURE) {
+			catch_iseqval = entry->iseq;
+			cont_pc = entry->cont;
+			cont_sp = entry->sp;
+			break;
+		    }
+		    else if (entry->type == type) {
+			cfp->pc = cfp->iseq->iseq_encoded + entry->cont;
+			cfp->sp = vm_base_ptr(cfp) + entry->sp;
+
+			if (state != TAG_REDO) {
+#if OPT_STACK_CACHING
+			    initial = (GET_THROWOBJ_VAL(err));
+#else
+			    *th->cfp->sp++ = (GET_THROWOBJ_VAL(err));
+#endif
+			}
+			th->errinfo = Qnil;
+			th->state = 0;
+			goto vm_loop_start;
+		    }
+		}
+	    }
+	}
+	else if (state == TAG_REDO) {
+	    type = CATCH_TYPE_REDO;
+	    goto search_restart_point;
+	}
+	else if (state == TAG_NEXT) {
+	    type = CATCH_TYPE_NEXT;
+	    goto search_restart_point;
+	}
+	else {
+	    ct = cfp->iseq->catch_table;
+	    if (ct) for (i = 0; i < ct->size; i++) {
+		entry = &ct->entries[i];
+		if (entry->start < epc && entry->end >= epc) {
+
+		    if (entry->type == CATCH_TYPE_ENSURE) {
+			catch_iseqval = entry->iseq;
+			cont_pc = entry->cont;
+			cont_sp = entry->sp;
+			break;
+		    }
+		}
+	    }
+	}
+
+	if (catch_iseqval != 0) {
+	    /* found catch table */
+	    rb_iseq_t *catch_iseq;
+
+	    /* enter catch scope */
+	    GetISeqPtr(catch_iseqval, catch_iseq);
+	    cfp->sp = vm_base_ptr(cfp) + cont_sp;
+	    cfp->pc = cfp->iseq->iseq_encoded + cont_pc;
+
+	    /* push block frame */
+	    cfp->sp[0] = err;
+	    vm_push_frame(th, catch_iseq, VM_FRAME_MAGIC_RESCUE,
+			  cfp->self, cfp->klass,
+			  VM_ENVVAL_PREV_EP_PTR(cfp->ep),
+			  catch_iseq->iseq_encoded,
+			  cfp->sp + 1 /* push value */,
+			  catch_iseq->local_size - 1,
+			  cfp->me, catch_iseq->stack_max);
+
+	    state = 0;
+	    th->state = 0;
+	    th->errinfo = Qnil;
+	    goto vm_loop_start;
+	}
+	else {
+	    /* skip frame */
+
+	    switch (VM_FRAME_TYPE(th->cfp)) {
+	      case VM_FRAME_MAGIC_METHOD:
+		RUBY_DTRACE_METHOD_RETURN_HOOK(th, 0, 0);
+		EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_RETURN, th->cfp->self, 0, 0, Qnil);
+		break;
+	      case VM_FRAME_MAGIC_BLOCK:
+	      case VM_FRAME_MAGIC_LAMBDA:
+		if (VM_FRAME_TYPE_BMETHOD_P(th->cfp)) {
+		    EXEC_EVENT_HOOK(th, RUBY_EVENT_B_RETURN, th->cfp->self, 0, 0, Qnil);
+		    EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_RETURN, th->cfp->self, th->cfp->me->called_id, th->cfp->me->klass, Qnil);
+		}
+		else {
+		    EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_B_RETURN, th->cfp->self, 0, 0, Qnil);
+		}
+		break;
+	      case VM_FRAME_MAGIC_CLASS:
+		EXEC_EVENT_HOOK_AND_POP_FRAME(th, RUBY_EVENT_END, th->cfp->self, 0, 0, Qnil);
+		break;
+	    }
+
+	    if (VM_FRAME_TYPE_FINISH_P(th->cfp)) {
+		vm_pop_frame(th);
+		th->errinfo = err;
+		TH_TMPPOP_TAG();
+		JUMP_TAG(state);
+	    }
+	    else {
+		th->cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(th->cfp);
+		goto exception_handler;
+	    }
+	}
+    }
+  finish_vme:
+    TH_POP_TAG();
+    return result;
+}
+
+/* misc */
+
+VALUE
+rb_iseq_eval(VALUE iseqval)
+{
+    rb_thread_t *th = GET_THREAD();
+    VALUE val;
+
+    vm_set_top_stack(th, iseqval);
+
+    val = vm_exec(th);
+    RB_GC_GUARD(iseqval); /* prohibit tail call optimization */
+    return val;
+}
+
+VALUE
+rb_iseq_eval_main(VALUE iseqval)
+{
+    rb_thread_t *th = GET_THREAD();
+    VALUE val;
+
+    vm_set_main_stack(th, iseqval);
+
+    val = vm_exec(th);
+    RB_GC_GUARD(iseqval); /* prohibit tail call optimization */
+    return val;
+}
+
+int
+rb_vm_control_frame_id_and_class(const rb_control_frame_t *cfp, ID *idp, VALUE *klassp)
+{
+    rb_iseq_t *iseq = cfp->iseq;
+    if (!iseq && cfp->me) {
+	if (idp) *idp = cfp->me->def->original_id;
+	if (klassp) *klassp = cfp->me->klass;
+	return 1;
+    }
+    while (iseq) {
+	if (RUBY_VM_IFUNC_P(iseq)) {
+	    if (idp) *idp = idIFUNC;
+	    if (klassp) *klassp = 0;
+	    return 1;
+	}
+	if (iseq->defined_method_id) {
+	    if (idp) *idp = iseq->defined_method_id;
+	    if (klassp) *klassp = iseq->klass;
+	    return 1;
+	}
+	if (iseq->local_iseq == iseq) {
+	    break;
+	}
+	iseq = iseq->parent_iseq;
+    }
+    return 0;
+}
+
+int
+rb_thread_method_id_and_class(rb_thread_t *th, ID *idp, VALUE *klassp)
+{
+    return rb_vm_control_frame_id_and_class(th->cfp, idp, klassp);
+}
+
+int
+rb_frame_method_id_and_class(ID *idp, VALUE *klassp)
+{
+    return rb_thread_method_id_and_class(GET_THREAD(), idp, klassp);
+}
+
+VALUE
+rb_thread_current_status(const rb_thread_t *th)
+{
+    const rb_control_frame_t *cfp = th->cfp;
+    VALUE str = Qnil;
+
+    if (cfp->iseq != 0) {
+	if (cfp->pc != 0) {
+	    rb_iseq_t *iseq = cfp->iseq;
+	    int line_no = rb_vm_get_sourceline(cfp);
+	    str = rb_sprintf("%"PRIsVALUE":%d:in `%"PRIsVALUE"'",
+			     iseq->location.path, line_no, iseq->location.label);
+	}
+    }
+    else if (cfp->me->def->original_id) {
+	str = rb_sprintf("`%"PRIsVALUE"#%"PRIsVALUE"' (cfunc)",
+			 rb_class_path(cfp->me->klass),
+			 rb_id2str(cfp->me->def->original_id));
+    }
+
+    return str;
+}
+
+VALUE
+rb_vm_call_cfunc(VALUE recv, VALUE (*func)(VALUE), VALUE arg,
+		 const rb_block_t *blockptr, VALUE filename)
+{
+    rb_thread_t *th = GET_THREAD();
+    const rb_control_frame_t *reg_cfp = th->cfp;
+    volatile VALUE iseqval = rb_iseq_new(0, filename, filename, Qnil, 0, ISEQ_TYPE_TOP);
+    VALUE val;
+
+    vm_push_frame(th, DATA_PTR(iseqval), VM_FRAME_MAGIC_TOP | VM_FRAME_FLAG_FINISH,
+		  recv, CLASS_OF(recv), VM_ENVVAL_BLOCK_PTR(blockptr), 0, reg_cfp->sp, 1, 0, 0);
+
+    val = (*func)(arg);
+
+    vm_pop_frame(th);
+    return val;
+}
+
+/* vm */
+
+void rb_vm_trace_mark_event_hooks(rb_hook_list_t *hooks);
+
+void
+rb_vm_mark(void *ptr)
+{
+    int i;
+
+    RUBY_MARK_ENTER("vm");
+    RUBY_GC_INFO("-------------------------------------------------\n");
+    if (ptr) {
+	rb_vm_t *vm = ptr;
+	rb_thread_t *th = 0;
+
+	list_for_each(&vm->living_threads, th, vmlt_node) {
+	    rb_gc_mark(th->self);
+	}
+	RUBY_MARK_UNLESS_NULL(vm->thgroup_default);
+	RUBY_MARK_UNLESS_NULL(vm->mark_object_ary);
+	RUBY_MARK_UNLESS_NULL(vm->load_path);
+	RUBY_MARK_UNLESS_NULL(vm->load_path_snapshot);
+	RUBY_MARK_UNLESS_NULL(vm->load_path_check_cache);
+	RUBY_MARK_UNLESS_NULL(vm->expanded_load_path);
+	RUBY_MARK_UNLESS_NULL(vm->loaded_features);
+	RUBY_MARK_UNLESS_NULL(vm->loaded_features_snapshot);
+	RUBY_MARK_UNLESS_NULL(vm->top_self);
+	RUBY_MARK_UNLESS_NULL(vm->coverages);
+	RUBY_MARK_UNLESS_NULL(vm->defined_module_hash);
+
+	if (vm->loading_table) {
+	    rb_mark_tbl(vm->loading_table);
+	}
+
+	rb_vm_trace_mark_event_hooks(&vm->event_hooks);
+
+	for (i = 0; i < RUBY_NSIG; i++) {
+	    if (vm->trap_list[i].cmd)
+		rb_gc_mark(vm->trap_list[i].cmd);
+	}
+    }
+
+    RUBY_MARK_LEAVE("vm");
+}
+
+void
+rb_vm_register_special_exception(enum ruby_special_exceptions sp, VALUE cls, const char *mesg)
+{
+    rb_vm_t *vm = GET_VM();
+    VALUE exc = rb_exc_new3(cls, rb_obj_freeze(rb_str_new2(mesg)));
+    OBJ_TAINT(exc);
+    OBJ_FREEZE(exc);
+    ((VALUE *)vm->special_exceptions)[sp] = exc;
+    rb_gc_register_mark_object(exc);
+}
+
+int
+rb_vm_add_root_module(ID id, VALUE module)
+{
+    rb_vm_t *vm = GET_VM();
+    if (vm->defined_module_hash) {
+	rb_hash_aset(vm->defined_module_hash, ID2SYM(id), module);
+    }
+    return TRUE;
+}
+
+int
+ruby_vm_destruct(rb_vm_t *vm)
+{
+    RUBY_FREE_ENTER("vm");
+
+    if (vm) {
+	rb_thread_t *th = vm->main_thread;
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
+	struct rb_objspace *objspace = vm->objspace;
+#endif
+	vm->main_thread = 0;
+	if (th) {
+	    rb_fiber_reset_root_local_storage(th->self);
+	    thread_free(th);
+	}
+	rb_vm_living_threads_init(vm);
+	ruby_vm_run_at_exit_hooks(vm);
+	rb_vm_gvl_destroy(vm);
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
+	if (objspace) {
+	    rb_objspace_free(objspace);
+	}
+#endif
+	/* after freeing objspace, you *can't* use ruby_xfree() */
+	ruby_mimfree(vm);
+	ruby_current_vm = 0;
+    }
+    RUBY_FREE_LEAVE("vm");
+    return 0;
+}
+
+static size_t
+vm_memsize(const void *ptr)
+{
+    if (ptr) {
+	const rb_vm_t *vmobj = ptr;
+	size_t size = sizeof(rb_vm_t);
+
+	size += vmobj->living_thread_num * sizeof(rb_thread_t);
+
+	if (vmobj->defined_strings) {
+	    size += DEFINED_EXPR * sizeof(VALUE);
+	}
+	return size;
+    }
+    else {
+	return 0;
+    }
+}
+
+static const rb_data_type_t vm_data_type = {
+    "VM",
+    {NULL, NULL, vm_memsize,},
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+
+static VALUE
+vm_default_params(void)
+{
+    rb_vm_t *vm = GET_VM();
+    VALUE result = rb_hash_new();
+#define SET(name) rb_hash_aset(result, ID2SYM(rb_intern(#name)), SIZET2NUM(vm->default_params.name));
+    SET(thread_vm_stack_size);
+    SET(thread_machine_stack_size);
+    SET(fiber_vm_stack_size);
+    SET(fiber_machine_stack_size);
+#undef SET
+    rb_obj_freeze(result);
+    return result;
+}
+
+static size_t
+get_param(const char *name, size_t default_value, size_t min_value)
+{
+    const char *envval;
+    size_t result = default_value;
+    if ((envval = getenv(name)) != 0) {
+	long val = atol(envval);
+	if (val < (long)min_value) {
+	    val = (long)min_value;
+	}
+	result = (size_t)(((val -1 + RUBY_VM_SIZE_ALIGN) / RUBY_VM_SIZE_ALIGN) * RUBY_VM_SIZE_ALIGN);
+    }
+    if (0) fprintf(stderr, "%s: %"PRIdSIZE"\n", name, result); /* debug print */
+
+    return result;
+}
+
+static void
+check_machine_stack_size(size_t *sizep)
+{
+#ifdef PTHREAD_STACK_MIN
+    size_t size = *sizep;
+#endif
+
+#ifdef PTHREAD_STACK_MIN
+    if (size < PTHREAD_STACK_MIN) {
+	*sizep = PTHREAD_STACK_MIN * 2;
+    }
+#endif
+}
+
+static void
+vm_default_params_setup(rb_vm_t *vm)
+{
+    vm->default_params.thread_vm_stack_size =
+      get_param("RUBY_THREAD_VM_STACK_SIZE",
+		RUBY_VM_THREAD_VM_STACK_SIZE,
+		RUBY_VM_THREAD_VM_STACK_SIZE_MIN);
+
+    vm->default_params.thread_machine_stack_size =
+      get_param("RUBY_THREAD_MACHINE_STACK_SIZE",
+		RUBY_VM_THREAD_MACHINE_STACK_SIZE,
+		RUBY_VM_THREAD_MACHINE_STACK_SIZE_MIN);
+
+    vm->default_params.fiber_vm_stack_size =
+      get_param("RUBY_FIBER_VM_STACK_SIZE",
+		RUBY_VM_FIBER_VM_STACK_SIZE,
+		RUBY_VM_FIBER_VM_STACK_SIZE_MIN);
+
+    vm->default_params.fiber_machine_stack_size =
+      get_param("RUBY_FIBER_MACHINE_STACK_SIZE",
+		RUBY_VM_FIBER_MACHINE_STACK_SIZE,
+		RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN);
+
+    /* environment dependent check */
+    check_machine_stack_size(&vm->default_params.thread_machine_stack_size);
+    check_machine_stack_size(&vm->default_params.fiber_machine_stack_size);
+}
+
+static void
+vm_init2(rb_vm_t *vm)
+{
+    MEMZERO(vm, rb_vm_t, 1);
+    rb_vm_living_threads_init(vm);
+    vm->src_encoding_index = -1;
+    vm->at_exit.basic.flags = (T_ARRAY | RARRAY_EMBED_FLAG) & ~RARRAY_EMBED_LEN_MASK; /* len set 0 */
+    rb_obj_hide((VALUE)&vm->at_exit);
+
+    vm_default_params_setup(vm);
+}
+
+/* Thread */
+
+#define USE_THREAD_DATA_RECYCLE 1
+
+#if USE_THREAD_DATA_RECYCLE
+#define RECYCLE_MAX 64
+static VALUE *thread_recycle_stack_slot[RECYCLE_MAX];
+static int thread_recycle_stack_count = 0;
+
+static VALUE *
+thread_recycle_stack(size_t size)
+{
+    if (thread_recycle_stack_count) {
+	/* TODO: check stack size if stack sizes are variable */
+	return thread_recycle_stack_slot[--thread_recycle_stack_count];
+    }
+    else {
+	return ALLOC_N(VALUE, size);
+    }
+}
+
+#else
+#define thread_recycle_stack(size) ALLOC_N(VALUE, (size))
+#endif
+
+void
+rb_thread_recycle_stack_release(VALUE *stack)
+{
+#if USE_THREAD_DATA_RECYCLE
+    if (thread_recycle_stack_count < RECYCLE_MAX) {
+	thread_recycle_stack_slot[thread_recycle_stack_count++] = stack;
+	return;
+    }
+#endif
+    ruby_xfree(stack);
+}
+
+void rb_fiber_mark_self(rb_fiber_t *fib);
+
+void
+rb_thread_mark(void *ptr)
+{
+    rb_thread_t *th = NULL;
+    RUBY_MARK_ENTER("thread");
+    if (ptr) {
+	th = ptr;
+	if (th->stack) {
+	    VALUE *p = th->stack;
+	    VALUE *sp = th->cfp->sp;
+	    rb_control_frame_t *cfp = th->cfp;
+	    rb_control_frame_t *limit_cfp = (void *)(th->stack + th->stack_size);
+
+	    rb_gc_mark_values((long)(sp - p), p);
+	    rb_gc_mark_locations(sp, sp + th->mark_stack_len);
+
+	    while (cfp != limit_cfp) {
+		rb_iseq_t *iseq = cfp->iseq;
+		rb_gc_mark(cfp->proc);
+		rb_gc_mark(cfp->self);
+		rb_gc_mark(cfp->klass);
+		if (iseq) {
+		    rb_gc_mark(RUBY_VM_NORMAL_ISEQ_P(iseq) ? iseq->self : (VALUE)iseq);
+		}
+		if (cfp->me) {
+		    /* bitmap marking `me' does not seem worth the trouble:
+		     * [ruby-core:64340] [ruby-core:64341] */
+		    ((rb_method_entry_t *)cfp->me)->mark = 1;
+		    rb_mark_method_entry(cfp->me);
+		}
+		cfp = RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp);
+	    }
+	}
+
+	/* mark ruby objects */
+	RUBY_MARK_UNLESS_NULL(th->first_proc);
+	if (th->first_proc) RUBY_MARK_UNLESS_NULL(th->first_args);
+
+	RUBY_MARK_UNLESS_NULL(th->thgroup);
+	RUBY_MARK_UNLESS_NULL(th->value);
+	RUBY_MARK_UNLESS_NULL(th->errinfo);
+	RUBY_MARK_UNLESS_NULL(th->pending_interrupt_queue);
+	RUBY_MARK_UNLESS_NULL(th->pending_interrupt_mask_stack);
+	RUBY_MARK_UNLESS_NULL(th->root_svar);
+	RUBY_MARK_UNLESS_NULL(th->top_self);
+	RUBY_MARK_UNLESS_NULL(th->top_wrapper);
+	rb_fiber_mark_self(th->fiber);
+	rb_fiber_mark_self(th->root_fiber);
+	RUBY_MARK_UNLESS_NULL(th->stat_insn_usage);
+	RUBY_MARK_UNLESS_NULL(th->last_status);
+
+	RUBY_MARK_UNLESS_NULL(th->locking_mutex);
+
+	rb_mark_tbl(th->local_storage);
+	RUBY_MARK_UNLESS_NULL(th->local_storage_recursive_hash);
+	RUBY_MARK_UNLESS_NULL(th->local_storage_recursive_hash_for_trace);
+
+	if (GET_THREAD() != th && th->machine.stack_start && th->machine.stack_end) {
+	    rb_gc_mark_machine_stack(th);
+	    rb_gc_mark_locations((VALUE *)&th->machine.regs,
+				 (VALUE *)(&th->machine.regs) +
+				 sizeof(th->machine.regs) / sizeof(VALUE));
+	}
+
+	rb_vm_trace_mark_event_hooks(&th->event_hooks);
+    }
+
+    RUBY_MARK_LEAVE("thread");
+}
+
+static void
+thread_free(void *ptr)
+{
+    rb_thread_t *th;
+    RUBY_FREE_ENTER("thread");
+
+    if (ptr) {
+	th = ptr;
+
+	if (!th->root_fiber) {
+	    RUBY_FREE_UNLESS_NULL(th->stack);
+	}
+
+	if (th->locking_mutex != Qfalse) {
+	    rb_bug("thread_free: locking_mutex must be NULL (%p:%p)", (void *)th, (void *)th->locking_mutex);
+	}
+	if (th->keeping_mutexes != NULL) {
+	    rb_bug("thread_free: keeping_mutexes must be NULL (%p:%p)", (void *)th, (void *)th->keeping_mutexes);
+	}
+
+	if (th->local_storage) {
+	    st_free_table(th->local_storage);
+	}
+
+	if (th->vm && th->vm->main_thread == th) {
+	    RUBY_GC_INFO("main thread\n");
+	}
+	else {
+#ifdef USE_SIGALTSTACK
+	    if (th->altstack) {
+		free(th->altstack);
+	    }
+#endif
+	    ruby_xfree(ptr);
+	}
+        if (ruby_current_thread == th)
+            ruby_current_thread = NULL;
+    }
+    RUBY_FREE_LEAVE("thread");
+}
+
+static size_t
+thread_memsize(const void *ptr)
+{
+    if (ptr) {
+	const rb_thread_t *th = ptr;
+	size_t size = sizeof(rb_thread_t);
+
+	if (!th->root_fiber) {
+	    size += th->stack_size * sizeof(VALUE);
+	}
+	if (th->local_storage) {
+	    size += st_memsize(th->local_storage);
+	}
+	return size;
+    }
+    else {
+	return 0;
+    }
+}
+
+#define thread_data_type ruby_threadptr_data_type
+const rb_data_type_t ruby_threadptr_data_type = {
+    "VM/thread",
+    {
+	rb_thread_mark,
+	thread_free,
+	thread_memsize,
+    },
+    0, 0, RUBY_TYPED_FREE_IMMEDIATELY
+};
+
+VALUE
+rb_obj_is_thread(VALUE obj)
+{
+    if (rb_typeddata_is_kind_of(obj, &thread_data_type)) {
+	return Qtrue;
+    }
+    else {
+	return Qfalse;
+    }
+}
+
+static VALUE
+thread_alloc(VALUE klass)
+{
+    VALUE obj;
+    rb_thread_t *th;
+    obj = TypedData_Make_Struct(klass, rb_thread_t, &thread_data_type, th);
+
+    return obj;
+}
+
+static void
+th_init(rb_thread_t *th, VALUE self)
+{
+    th->self = self;
+
+    /* allocate thread stack */
+#ifdef USE_SIGALTSTACK
+    /* altstack of main thread is reallocated in another place */
+    th->altstack = malloc(rb_sigaltstack_size());
+#endif
+    /* th->stack_size is word number.
+     * th->vm->default_params.thread_vm_stack_size is byte size.
+     */
+    th->stack_size = th->vm->default_params.thread_vm_stack_size / sizeof(VALUE);
+    th->stack = thread_recycle_stack(th->stack_size);
+
+    th->cfp = (void *)(th->stack + th->stack_size);
+
+    vm_push_frame(th, 0 /* dummy iseq */, VM_FRAME_MAGIC_TOP | VM_FRAME_FLAG_FINISH,
+		  Qnil /* dummy self */, Qnil /* dummy klass */, VM_ENVVAL_BLOCK_PTR(0), 0 /* dummy pc */, th->stack, 1, 0, 0);
+
+    th->status = THREAD_RUNNABLE;
+    th->errinfo = Qnil;
+    th->last_status = Qnil;
+    th->waiting_fd = -1;
+    th->root_svar = Qnil;
+    th->local_storage_recursive_hash = Qnil;
+    th->local_storage_recursive_hash_for_trace = Qnil;
+#ifdef NON_SCALAR_THREAD_ID
+    th->thread_id_string[0] = '\0';
+#endif
+
+#if OPT_CALL_THREADED_CODE
+    th->retval = Qundef;
+#endif
+}
+
+static VALUE
+ruby_thread_init(VALUE self)
+{
+    rb_thread_t *th;
+    rb_vm_t *vm = GET_THREAD()->vm;
+    GetThreadPtr(self, th);
+
+    th->vm = vm;
+    th_init(th, self);
+    rb_ivar_set(self, rb_intern("locals"), rb_hash_new());
+
+    th->top_wrapper = 0;
+    th->top_self = rb_vm_top_self();
+    th->root_svar = Qnil;
+    return self;
+}
+
+VALUE
+rb_thread_alloc(VALUE klass)
+{
+    VALUE self = thread_alloc(klass);
+    ruby_thread_init(self);
+    return self;
+}
+
+static void
+vm_define_method(rb_thread_t *th, VALUE obj, ID id, VALUE iseqval,
+		 rb_num_t is_singleton, NODE *cref)
+{
+    VALUE klass = cref->nd_clss;
+    int noex = (int)cref->nd_visi;
+    rb_iseq_t *miseq;
+    GetISeqPtr(iseqval, miseq);
+
+    if (miseq->klass) {
+	RB_GC_GUARD(iseqval) = rb_iseq_clone(iseqval, 0);
+	GetISeqPtr(iseqval, miseq);
+    }
+
+    if (NIL_P(klass)) {
+	rb_raise(rb_eTypeError, "no class/module to add method");
+    }
+
+    if (is_singleton) {
+	klass = rb_singleton_class(obj); /* class and frozen checked in this API */
+	noex = NOEX_PUBLIC;
+    }
+
+    /* dup */
+    COPY_CREF(miseq->cref_stack, cref);
+    miseq->cref_stack->nd_visi = NOEX_PUBLIC;
+    RB_OBJ_WRITE(miseq->self, &miseq->klass, klass);
+    miseq->defined_method_id = id;
+    rb_add_method(klass, id, VM_METHOD_TYPE_ISEQ, miseq, noex);
+
+    if (!is_singleton && noex == NOEX_MODFUNC) {
+	klass = rb_singleton_class(klass);
+	rb_add_method(klass, id, VM_METHOD_TYPE_ISEQ, miseq, NOEX_PUBLIC);
+    }
+}
+
+#define REWIND_CFP(expr) do { \
+    rb_thread_t *th__ = GET_THREAD(); \
+    th__->cfp++; expr; th__->cfp--; \
+} while (0)
+
+static VALUE
+m_core_define_method(VALUE self, VALUE cbase, VALUE sym, VALUE iseqval)
+{
+    REWIND_CFP({
+	vm_define_method(GET_THREAD(), cbase, SYM2ID(sym), iseqval, 0, rb_vm_cref());
+    });
+    return sym;
+}
+
+static VALUE
+m_core_define_singleton_method(VALUE self, VALUE cbase, VALUE sym, VALUE iseqval)
+{
+    REWIND_CFP({
+	vm_define_method(GET_THREAD(), cbase, SYM2ID(sym), iseqval, 1, rb_vm_cref());
+    });
+    return sym;
+}
+
+static VALUE
+m_core_set_method_alias(VALUE self, VALUE cbase, VALUE sym1, VALUE sym2)
+{
+    REWIND_CFP({
+	rb_alias(cbase, SYM2ID(sym1), SYM2ID(sym2));
+    });
+    return Qnil;
+}
+
+static VALUE
+m_core_set_variable_alias(VALUE self, VALUE sym1, VALUE sym2)
+{
+    REWIND_CFP({
+	rb_alias_variable(SYM2ID(sym1), SYM2ID(sym2));
+    });
+    return Qnil;
+}
+
+static VALUE
+m_core_undef_method(VALUE self, VALUE cbase, VALUE sym)
+{
+    REWIND_CFP({
+	rb_undef(cbase, SYM2ID(sym));
+	rb_clear_method_cache_by_class(self);
+    });
+    return Qnil;
+}
+
+static VALUE
+m_core_set_postexe(VALUE self)
+{
+    rb_set_end_proc(rb_call_end_proc, rb_block_proc());
+    return Qnil;
+}
+
+static VALUE core_hash_merge_ary(VALUE hash, VALUE ary);
+static VALUE core_hash_from_ary(VALUE ary);
+static VALUE core_hash_merge_kwd(int argc, VALUE *argv);
+
+static VALUE
+core_hash_merge(VALUE hash, long argc, const VALUE *argv)
+{
+    long i;
+
+    assert(argc % 2 == 0);
+    for (i=0; i<argc; i+=2) {
+	rb_hash_aset(hash, argv[i], argv[i+1]);
+    }
+    return hash;
+}
+
+static VALUE
+m_core_hash_from_ary(VALUE self, VALUE ary)
+{
+    VALUE hash;
+    REWIND_CFP(hash = core_hash_from_ary(ary));
+    return hash;
+}
+
+static VALUE
+core_hash_from_ary(VALUE ary)
+{
+    VALUE hash = rb_hash_new();
+
+    if (RUBY_DTRACE_HASH_CREATE_ENABLED()) {
+	RUBY_DTRACE_HASH_CREATE(RARRAY_LEN(ary), rb_sourcefile(), rb_sourceline());
+    }
+
+    return core_hash_merge_ary(hash, ary);
+}
+
+static VALUE
+m_core_hash_merge_ary(VALUE self, VALUE hash, VALUE ary)
+{
+    REWIND_CFP(core_hash_merge_ary(hash, ary));
+    return hash;
+}
+
+static VALUE
+core_hash_merge_ary(VALUE hash, VALUE ary)
+{
+    core_hash_merge(hash, RARRAY_LEN(ary), RARRAY_CONST_PTR(ary));
+    return hash;
+}
+
+static VALUE
+m_core_hash_merge_ptr(int argc, VALUE *argv, VALUE recv)
+{
+    VALUE hash = argv[0];
+
+    REWIND_CFP(core_hash_merge(hash, argc-1, argv+1));
+
+    return hash;
+}
+
+static int
+kwmerge_i(VALUE key, VALUE value, VALUE hash)
+{
+    if (!SYMBOL_P(key)) Check_Type(key, T_SYMBOL);
+    rb_hash_aset(hash, key, value);
+    return ST_CONTINUE;
+}
+
+static int
+kwcheck_i(VALUE key, VALUE value, VALUE hash)
+{
+    if (!SYMBOL_P(key)) Check_Type(key, T_SYMBOL);
+    return ST_CONTINUE;
+}
+
+static VALUE
+m_core_hash_merge_kwd(int argc, VALUE *argv, VALUE recv)
+{
+    VALUE hash;
+    REWIND_CFP(hash = core_hash_merge_kwd(argc, argv));
+    return hash;
+}
+
+static VALUE
+core_hash_merge_kwd(int argc, VALUE *argv)
+{
+    VALUE hash, kw;
+    rb_check_arity(argc, 1, 2);
+    hash = argv[0];
+    kw = argv[argc-1];
+    kw = rb_convert_type(kw, T_HASH, "Hash", "to_hash");
+    if (argc < 2) hash = kw;
+    rb_hash_foreach(kw, argc < 2 ? kwcheck_i : kwmerge_i, hash);
+    return hash;
+}
+
+extern VALUE *rb_gc_stack_start;
+extern size_t rb_gc_stack_maxsize;
+#ifdef __ia64
+extern VALUE *rb_gc_register_stack_start;
+#endif
+
+/* debug functions */
+
+/* :nodoc: */
+static VALUE
+sdr(void)
+{
+    rb_vm_bugreport(NULL);
+    return Qnil;
+}
+
+/* :nodoc: */
+static VALUE
+nsdr(void)
+{
+    VALUE ary = rb_ary_new();
+#if HAVE_BACKTRACE
+#include <execinfo.h>
+#define MAX_NATIVE_TRACE 1024
+    static void *trace[MAX_NATIVE_TRACE];
+    int n = (int)backtrace(trace, MAX_NATIVE_TRACE);
+    char **syms = backtrace_symbols(trace, n);
+    int i;
+
+    if (syms == 0) {
+	rb_memerror();
+    }
+
+    for (i=0; i<n; i++) {
+	rb_ary_push(ary, rb_str_new2(syms[i]));
+    }
+    free(syms); /* OK */
+#endif
+    return ary;
+}
+
+#if VM_COLLECT_USAGE_DETAILS
+static VALUE usage_analysis_insn_stop(VALUE self);
+static VALUE usage_analysis_operand_stop(VALUE self);
+static VALUE usage_analysis_register_stop(VALUE self);
+#endif
+
+void
+Init_VM(void)
+{
+    VALUE opts;
+    VALUE klass;
+    VALUE fcore;
+
+    /* ::RubyVM */
+    rb_cRubyVM = rb_define_class("RubyVM", rb_cObject);
+    rb_undef_alloc_func(rb_cRubyVM);
+    rb_undef_method(CLASS_OF(rb_cRubyVM), "new");
+    rb_define_singleton_method(rb_cRubyVM, "stat", vm_stat, -1);
+
+    /* FrozenCore (hidden) */
+    fcore = rb_class_new(rb_cBasicObject);
+    RBASIC(fcore)->flags = T_ICLASS;
+    klass = rb_singleton_class(fcore);
+    rb_define_method_id(klass, id_core_set_method_alias, m_core_set_method_alias, 3);
+    rb_define_method_id(klass, id_core_set_variable_alias, m_core_set_variable_alias, 2);
+    rb_define_method_id(klass, id_core_undef_method, m_core_undef_method, 2);
+    rb_define_method_id(klass, id_core_define_method, m_core_define_method, 3);
+    rb_define_method_id(klass, id_core_define_singleton_method, m_core_define_singleton_method, 3);
+    rb_define_method_id(klass, id_core_set_postexe, m_core_set_postexe, 0);
+    rb_define_method_id(klass, id_core_hash_from_ary, m_core_hash_from_ary, 1);
+    rb_define_method_id(klass, id_core_hash_merge_ary, m_core_hash_merge_ary, 2);
+    rb_define_method_id(klass, id_core_hash_merge_ptr, m_core_hash_merge_ptr, -1);
+    rb_define_method_id(klass, id_core_hash_merge_kwd, m_core_hash_merge_kwd, -1);
+    rb_define_method_id(klass, idProc, rb_block_proc, 0);
+    rb_define_method_id(klass, idLambda, rb_block_lambda, 0);
+    rb_obj_freeze(fcore);
+    RBASIC_CLEAR_CLASS(klass);
+    RCLASS_SET_SUPER(klass, 0);
+    rb_obj_freeze(klass);
+    rb_gc_register_mark_object(fcore);
+    rb_mRubyVMFrozenCore = fcore;
+
+    /* ::RubyVM::Env */
+    rb_cEnv = rb_define_class_under(rb_cRubyVM, "Env", rb_cObject);
+    rb_undef_alloc_func(rb_cEnv);
+    rb_undef_method(CLASS_OF(rb_cEnv), "new");
+
+    /*
+     * Document-class: Thread
+     *
+     *	Threads are the Ruby implementation for a concurrent programming model.
+     *
+     *	Programs that require multiple threads of execution are a perfect
+     *	candidate for Ruby's Thread class.
+     *
+     *	For example, we can create a new thread separate from the main thread's
+     *	execution using ::new.
+     *
+     *	    thr = Thread.new { puts "Whats the big deal" }
+     *
+     *	Then we are able to pause the execution of the main thread and allow
+     *	our new thread to finish, using #join:
+     *
+     *	    thr.join #=> "Whats the big deal"
+     *
+     *	If we don't call +thr.join+ before the main thread terminates, then all
+     *	other threads including +thr+ will be killed.
+     *
+     *	Alternatively, you can use an array for handling multiple threads at
+     *	once, like in the following example:
+     *
+     *	    threads = []
+     *	    threads << Thread.new { puts "Whats the big deal" }
+     *	    threads << Thread.new { 3.times { puts "Threads are fun!" } }
+     *
+     *	After creating a few threads we wait for them all to finish
+     *	consecutively.
+     *
+     *	    threads.each { |thr| thr.join }
+     *
+     *	=== Thread initialization
+     *
+     *	In order to create new threads, Ruby provides ::new, ::start, and
+     *	::fork. A block must be provided with each of these methods, otherwise
+     *	a ThreadError will be raised.
+     *
+     *	When subclassing the Thread class, the +initialize+ method of your
+     *	subclass will be ignored by ::start and ::fork. Otherwise, be sure to
+     *	call super in your +initialize+ method.
+     *
+     * 	=== Thread termination
+     *
+     * 	For terminating threads, Ruby provides a variety of ways to do this.
+     *
+     *	The class method ::kill, is meant to exit a given thread:
+     *
+     *	    thr = Thread.new { ... }
+     *	    Thread.kill(thr) # sends exit() to thr
+     *
+     *	Alternatively, you can use the instance method #exit, or any of its
+     *	aliases #kill or #terminate.
+     *
+     *	    thr.exit
+     *
+     * 	=== Thread status
+     *
+     * 	Ruby provides a few instance methods for querying the state of a given
+     * 	thread. To get a string with the current thread's state use #status
+     *
+     *	    thr = Thread.new { sleep }
+     *	    thr.status # => "sleep"
+     *	    thr.exit
+     *	    thr.status # => false
+     *
+     *	You can also use #alive? to tell if the thread is running or sleeping,
+     *	and #stop? if the thread is dead or sleeping.
+     *
+     * 	=== Thread variables and scope
+     *
+     * 	Since threads are created with blocks, the same rules apply to other
+     * 	Ruby blocks for variable scope. Any local variables created within this
+     * 	block are accessible to only this thread.
+     *
+     * 	==== Fiber-local vs. Thread-local
+     *
+     *	Each fiber has its own bucket for Thread#[] storage. When you set a
+     *	new fiber-local it is only accessible within this Fiber. To illustrate:
+     *
+     *	    Thread.new {
+     *	      Thread.current[:foo] = "bar"
+     *	      Fiber.new {
+     *	        p Thread.current[:foo] # => nil
+     *	      }.resume
+     *	    }.join
+     *
+     * 	This example uses #[] for getting and #[]= for setting fiber-locals,
+     * 	you can also use #keys to list the fiber-locals for a given
+     * 	thread and #key? to check if a fiber-local exists.
+     *
+     *	When it comes to thread-locals, they are accessible within the entire
+     *	scope of the thread. Given the following example:
+     *
+     *	    Thread.new{
+     *	      Thread.current.thread_variable_set(:foo, 1)
+     *	      p Thread.current.thread_variable_get(:foo) # => 1
+     *	      Fiber.new{
+     *		Thread.current.thread_variable_set(:foo, 2)
+     *		p Thread.current.thread_variable_get(:foo) # => 2
+     *	      }.resume
+     *	      p Thread.current.thread_variable_get(:foo)   # => 2
+     *	    }.join
+     *
+     *  You can see that the thread-local +:foo+ carried over into the fiber
+     *  and was changed to +2+ by the end of the thread.
+     *
+     *  This example makes use of #thread_variable_set to create new
+     *  thread-locals, and #thread_variable_get to reference them.
+     *
+     *  There is also #thread_variables to list all thread-locals, and
+     *  #thread_variable? to check if a given thread-local exists.
+     *
+     * 	=== Exception handling
+     *
+     *	Any thread can raise an exception using the #raise instance method,
+     *	which operates similarly to Kernel#raise.
+     *
+     *	However, it's important to note that an exception that occurs in any
+     *	thread except the main thread depends on #abort_on_exception. This
+     *	option is +false+ by default, meaning that any unhandled exception will
+     *	cause the thread to terminate silently when waited on by either #join
+     *	or #value. You can change this default by either #abort_on_exception=
+     *	+true+ or setting $DEBUG to +true+.
+     *
+     *	With the addition of the class method ::handle_interrupt, you can now
+     *	handle exceptions asynchronously with threads.
+     *
+     * 	=== Scheduling
+     *
+     * 	Ruby provides a few ways to support scheduling threads in your program.
+     *
+     * 	The first way is by using the class method ::stop, to put the current
+     * 	running thread to sleep and schedule the execution of another thread.
+     *
+     * 	Once a thread is asleep, you can use the instance method #wakeup to
+     * 	mark your thread as eligible for scheduling.
+     *
+     * 	You can also try ::pass, which attempts to pass execution to another
+     * 	thread but is dependent on the OS whether a running thread will switch
+     * 	or not. The same goes for #priority, which lets you hint to the thread
+     * 	scheduler which threads you want to take precedence when passing
+     * 	execution. This method is also dependent on the OS and may be ignored
+     * 	on some platforms.
+     *
+     */
+    rb_cThread = rb_define_class("Thread", rb_cObject);
+    rb_undef_alloc_func(rb_cThread);
+
+#if VM_COLLECT_USAGE_DETAILS
+    /* ::RubyVM::USAGE_ANALYSIS_* */
+#define define_usage_analysis_hash(name) /* shut up rdoc -C */ \
+    rb_define_const(rb_cRubyVM, "USAGE_ANALYSIS_"#name, rb_hash_new())
+    define_usage_analysis_hash("INSN");
+    define_usage_analysis_hash("REGS");
+    define_usage_analysis_hash("INSN_BIGRAM");
+
+    rb_define_singleton_method(rb_cRubyVM, "USAGE_ANALYSIS_INSN_STOP", usage_analysis_insn_stop, 0);
+    rb_define_singleton_method(rb_cRubyVM, "USAGE_ANALYSIS_OPERAND_STOP", usage_analysis_operand_stop, 0);
+    rb_define_singleton_method(rb_cRubyVM, "USAGE_ANALYSIS_REGISTER_STOP", usage_analysis_register_stop, 0);
+#endif
+
+    /* ::RubyVM::OPTS, which shows vm build options */
+    rb_define_const(rb_cRubyVM, "OPTS", opts = rb_ary_new());
+
+#if   OPT_DIRECT_THREADED_CODE
+    rb_ary_push(opts, rb_str_new2("direct threaded code"));
+#elif OPT_TOKEN_THREADED_CODE
+    rb_ary_push(opts, rb_str_new2("token threaded code"));
+#elif OPT_CALL_THREADED_CODE
+    rb_ary_push(opts, rb_str_new2("call threaded code"));
+#endif
+
+#if OPT_STACK_CACHING
+    rb_ary_push(opts, rb_str_new2("stack caching"));
+#endif
+#if OPT_OPERANDS_UNIFICATION
+    rb_ary_push(opts, rb_str_new2("operands unification"));
+#endif
+#if OPT_INSTRUCTIONS_UNIFICATION
+    rb_ary_push(opts, rb_str_new2("instructions unification"));
+#endif
+#if OPT_INLINE_METHOD_CACHE
+    rb_ary_push(opts, rb_str_new2("inline method cache"));
+#endif
+#if OPT_BLOCKINLINING
+    rb_ary_push(opts, rb_str_new2("block inlining"));
+#endif
+
+    /* ::RubyVM::INSTRUCTION_NAMES */
+    rb_define_const(rb_cRubyVM, "INSTRUCTION_NAMES", rb_insns_name_array());
+
+    /* ::RubyVM::DEFAULT_PARAMS
+     * This constant variable shows VM's default parameters.
+     * Note that changing these values does not affect VM execution.
+     * Specification is not stable and you should not depend on this value.
+     * Of course, this constant is MRI specific.
+     */
+    rb_define_const(rb_cRubyVM, "DEFAULT_PARAMS", vm_default_params());
+
+    /* debug functions ::RubyVM::SDR(), ::RubyVM::NSDR() */
+#if VMDEBUG
+    rb_define_singleton_method(rb_cRubyVM, "SDR", sdr, 0);
+    rb_define_singleton_method(rb_cRubyVM, "NSDR", nsdr, 0);
+#else
+    (void)sdr;
+    (void)nsdr;
+#endif
+
+    /* VM bootstrap: phase 2 */
+    {
+	rb_vm_t *vm = ruby_current_vm;
+	rb_thread_t *th = GET_THREAD();
+	VALUE filename = rb_str_new2("<main>");
+	volatile VALUE iseqval = rb_iseq_new(0, filename, filename, Qnil, 0, ISEQ_TYPE_TOP);
+        volatile VALUE th_self;
+	rb_iseq_t *iseq;
+
+	/* create vm object */
+	vm->self = TypedData_Wrap_Struct(rb_cRubyVM, &vm_data_type, vm);
+
+	/* create main thread */
+	th_self = th->self = TypedData_Wrap_Struct(rb_cThread, &thread_data_type, th);
+	rb_iv_set(th_self, "locals", rb_hash_new());
+	vm->main_thread = th;
+	vm->running_thread = th;
+	th->vm = vm;
+	th->top_wrapper = 0;
+	th->top_self = rb_vm_top_self();
+	rb_thread_set_current(th);
+
+	rb_vm_living_threads_insert(vm, th);
+
+	rb_gc_register_mark_object(iseqval);
+	GetISeqPtr(iseqval, iseq);
+	th->cfp->iseq = iseq;
+	th->cfp->pc = iseq->iseq_encoded;
+	th->cfp->self = th->top_self;
+	th->cfp->klass = Qnil;
+
+	/*
+	 * The Binding of the top level scope
+	 */
+	rb_define_global_const("TOPLEVEL_BINDING", rb_binding_new());
+    }
+    vm_init_redefined_flag();
+
+    /* vm_backtrace.c */
+    Init_vm_backtrace();
+    VM_PROFILE_ATEXIT();
+}
+
+void
+rb_vm_set_progname(VALUE filename)
+{
+    rb_thread_t *th = GET_VM()->main_thread;
+    rb_control_frame_t *cfp = (void *)(th->stack + th->stack_size);
+    --cfp;
+    RB_OBJ_WRITE(cfp->iseq->self, &cfp->iseq->location.path, filename);
+}
+
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
+struct rb_objspace *rb_objspace_alloc(void);
+#endif
+
+void
+Init_BareVM(void)
+{
+    /* VM bootstrap: phase 1 */
+    rb_vm_t * vm = ruby_mimmalloc(sizeof(*vm));
+    rb_thread_t * th = ruby_mimmalloc(sizeof(*th));
+    if (!vm || !th) {
+	fprintf(stderr, "[FATAL] failed to allocate memory\n");
+	exit(EXIT_FAILURE);
+    }
+    MEMZERO(th, rb_thread_t, 1);
+    rb_thread_set_current_raw(th);
+
+    vm_init2(vm);
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
+    vm->objspace = rb_objspace_alloc();
+#endif
+    ruby_current_vm = vm;
+
+    Init_native_thread();
+    th->vm = vm;
+    th_init(th, 0);
+    ruby_thread_init_stack(th);
+}
+
+void
+Init_vm_objects(void)
+{
+    rb_vm_t *vm = GET_VM();
+
+    vm->defined_module_hash = rb_hash_new();
+
+    /* initialize mark object array, hash */
+    vm->mark_object_ary = rb_ary_tmp_new(128);
+}
+
+/* top self */
+
+static VALUE
+main_to_s(VALUE obj)
+{
+    return rb_str_new2("main");
+}
+
+VALUE
+rb_vm_top_self(void)
+{
+    return GET_VM()->top_self;
+}
+
+void
+Init_top_self(void)
+{
+    rb_vm_t *vm = GET_VM();
+
+    vm->top_self = rb_obj_alloc(rb_cObject);
+    rb_define_singleton_method(rb_vm_top_self(), "to_s", main_to_s, 0);
+    rb_define_alias(rb_singleton_class(rb_vm_top_self()), "inspect", "to_s");
+}
+
+VALUE *
+ruby_vm_verbose_ptr(rb_vm_t *vm)
+{
+    return &vm->verbose;
+}
+
+VALUE *
+ruby_vm_debug_ptr(rb_vm_t *vm)
+{
+    return &vm->debug;
+}
+
+VALUE *
+rb_ruby_verbose_ptr(void)
+{
+    return ruby_vm_verbose_ptr(GET_VM());
+}
+
+VALUE *
+rb_ruby_debug_ptr(void)
+{
+    return ruby_vm_debug_ptr(GET_VM());
+}
+
+/* iseq.c */
+VALUE rb_insn_operand_intern(rb_iseq_t *iseq,
+			     VALUE insn, int op_no, VALUE op,
+			     int len, size_t pos, VALUE *pnop, VALUE child);
+
+#if VM_COLLECT_USAGE_DETAILS
+
+#define HASH_ASET(h, k, v) rb_hash_aset((h), (st_data_t)(k), (st_data_t)(v))
+
+/* uh = {
+ *   insn(Fixnum) => ihash(Hash)
+ * }
+ * ihash = {
+ *   -1(Fixnum) => count,      # insn usage
+ *    0(Fixnum) => ophash,     # operand usage
+ * }
+ * ophash = {
+ *   val(interned string) => count(Fixnum)
+ * }
+ */
+static void
+vm_analysis_insn(int insn)
+{
+    ID usage_hash;
+    ID bigram_hash;
+    static int prev_insn = -1;
+
+    VALUE uh;
+    VALUE ihash;
+    VALUE cv;
+
+    CONST_ID(usage_hash, "USAGE_ANALYSIS_INSN");
+    CONST_ID(bigram_hash, "USAGE_ANALYSIS_INSN_BIGRAM");
+    uh = rb_const_get(rb_cRubyVM, usage_hash);
+    if ((ihash = rb_hash_aref(uh, INT2FIX(insn))) == Qnil) {
+	ihash = rb_hash_new();
+	HASH_ASET(uh, INT2FIX(insn), ihash);
+    }
+    if ((cv = rb_hash_aref(ihash, INT2FIX(-1))) == Qnil) {
+	cv = INT2FIX(0);
+    }
+    HASH_ASET(ihash, INT2FIX(-1), INT2FIX(FIX2INT(cv) + 1));
+
+    /* calc bigram */
+    if (prev_insn != -1) {
+	VALUE bi;
+	VALUE ary[2];
+	VALUE cv;
+
+	ary[0] = INT2FIX(prev_insn);
+	ary[1] = INT2FIX(insn);
+	bi = rb_ary_new4(2, &ary[0]);
+
+	uh = rb_const_get(rb_cRubyVM, bigram_hash);
+	if ((cv = rb_hash_aref(uh, bi)) == Qnil) {
+	    cv = INT2FIX(0);
+	}
+	HASH_ASET(uh, bi, INT2FIX(FIX2INT(cv) + 1));
+    }
+    prev_insn = insn;
+}
+
+static void
+vm_analysis_operand(int insn, int n, VALUE op)
+{
+    ID usage_hash;
+
+    VALUE uh;
+    VALUE ihash;
+    VALUE ophash;
+    VALUE valstr;
+    VALUE cv;
+
+    CONST_ID(usage_hash, "USAGE_ANALYSIS_INSN");
+
+    uh = rb_const_get(rb_cRubyVM, usage_hash);
+    if ((ihash = rb_hash_aref(uh, INT2FIX(insn))) == Qnil) {
+	ihash = rb_hash_new();
+	HASH_ASET(uh, INT2FIX(insn), ihash);
+    }
+    if ((ophash = rb_hash_aref(ihash, INT2FIX(n))) == Qnil) {
+	ophash = rb_hash_new();
+	HASH_ASET(ihash, INT2FIX(n), ophash);
+    }
+    /* intern */
+    valstr = rb_insn_operand_intern(GET_THREAD()->cfp->iseq, insn, n, op, 0, 0, 0, 0);
+
+    /* set count */
+    if ((cv = rb_hash_aref(ophash, valstr)) == Qnil) {
+	cv = INT2FIX(0);
+    }
+    HASH_ASET(ophash, valstr, INT2FIX(FIX2INT(cv) + 1));
+}
+
+static void
+vm_analysis_register(int reg, int isset)
+{
+    ID usage_hash;
+    VALUE uh;
+    VALUE valstr;
+    static const char regstrs[][5] = {
+	"pc",			/* 0 */
+	"sp",			/* 1 */
+	"ep",                   /* 2 */
+	"cfp",			/* 3 */
+	"self",			/* 4 */
+	"iseq",			/* 5 */
+    };
+    static const char getsetstr[][4] = {
+	"get",
+	"set",
+    };
+    static VALUE syms[sizeof(regstrs) / sizeof(regstrs[0])][2];
+
+    VALUE cv;
+
+    CONST_ID(usage_hash, "USAGE_ANALYSIS_REGS");
+    if (syms[0] == 0) {
+	char buff[0x10];
+	int i;
+
+	for (i = 0; i < (int)(sizeof(regstrs) / sizeof(regstrs[0])); i++) {
+	    int j;
+	    for (j = 0; j < 2; j++) {
+		snprintf(buff, 0x10, "%d %s %-4s", i, getsetstr[j], regstrs[i]);
+		syms[i][j] = ID2SYM(rb_intern(buff));
+	    }
+	}
+    }
+    valstr = syms[reg][isset];
+
+    uh = rb_const_get(rb_cRubyVM, usage_hash);
+    if ((cv = rb_hash_aref(uh, valstr)) == Qnil) {
+	cv = INT2FIX(0);
+    }
+    HASH_ASET(uh, valstr, INT2FIX(FIX2INT(cv) + 1));
+}
+
+#undef HASH_ASET
+
+void (*ruby_vm_collect_usage_func_insn)(int insn) = vm_analysis_insn;
+void (*ruby_vm_collect_usage_func_operand)(int insn, int n, VALUE op) = vm_analysis_operand;
+void (*ruby_vm_collect_usage_func_register)(int reg, int isset) = vm_analysis_register;
+
+/* :nodoc: */
+static VALUE
+usage_analysis_insn_stop(VALUE self)
+{
+    ruby_vm_collect_usage_func_insn = 0;
+    return Qnil;
+}
+
+/* :nodoc: */
+static VALUE
+usage_analysis_operand_stop(VALUE self)
+{
+    ruby_vm_collect_usage_func_operand = 0;
+    return Qnil;
+}
+
+/* :nodoc: */
+static VALUE
+usage_analysis_register_stop(VALUE self)
+{
+    ruby_vm_collect_usage_func_register = 0;
+    return Qnil;
+}
+
+#else
+
+void (*ruby_vm_collect_usage_func_insn)(int insn) = NULL;
+void (*ruby_vm_collect_usage_func_operand)(int insn, int n, VALUE op) = NULL;
+void (*ruby_vm_collect_usage_func_register)(int reg, int isset) = NULL;
+
+#endif
+
+#if VM_COLLECT_USAGE_DETAILS
+/* @param insn instruction number */
+static void
+vm_collect_usage_insn(int insn)
+{
+    if (RUBY_DTRACE_INSN_ENABLED()) {
+	RUBY_DTRACE_INSN(rb_insns_name(insn));
+    }
+    if (ruby_vm_collect_usage_func_insn)
+	(*ruby_vm_collect_usage_func_insn)(insn);
+}
+
+/* @param insn instruction number
+ * @param n    n-th operand
+ * @param op   operand value
+ */
+static void
+vm_collect_usage_operand(int insn, int n, VALUE op)
+{
+    if (RUBY_DTRACE_INSN_OPERAND_ENABLED()) {
+	VALUE valstr;
+
+	valstr = rb_insn_operand_intern(GET_THREAD()->cfp->iseq, insn, n, op, 0, 0, 0, 0);
+
+	RUBY_DTRACE_INSN_OPERAND(RSTRING_PTR(valstr), rb_insns_name(insn));
+	RB_GC_GUARD(valstr);
+    }
+    if (ruby_vm_collect_usage_func_operand)
+	(*ruby_vm_collect_usage_func_operand)(insn, n, op);
+}
+
+/* @param reg register id. see code of vm_analysis_register() */
+/* @param isset 0: read, 1: write */
+static void
+vm_collect_usage_register(int reg, int isset)
+{
+    if (ruby_vm_collect_usage_func_register)
+	(*ruby_vm_collect_usage_func_register)(reg, isset);
+}
+#endif
diff --git a/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/vm_core.h b/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/vm_core.h
new file mode 100644
index 000000000..af9b8c65d
--- /dev/null
+++ b/v4-cokapi/backends/ruby/custom-ruby-interpreter/altered-files/vm_core.h
@@ -0,0 +1,1162 @@
+/**********************************************************************
+
+  vm_core.h -
+
+  $Author: naruse $
+  created at: 04/01/01 19:41:38 JST
+
+  Copyright (C) 2004-2007 Koichi Sasada
+
+**********************************************************************/
+
+#ifndef RUBY_VM_CORE_H
+#define RUBY_VM_CORE_H
+
+#define RUBY_VM_THREAD_MODEL 2
+
+#include "ruby/ruby.h"
+#include "ruby/st.h"
+
+#include "node.h"
+#include "vm_debug.h"
+#include "vm_opts.h"
+#include "id.h"
+#include "method.h"
+#include "ruby_atomic.h"
+#include "ccan/list/list.h"
+
+#include "ruby/thread_native.h"
+#if   defined(_WIN32)
+#include "thread_win32.h"
+#elif defined(HAVE_PTHREAD_H)
+#include "thread_pthread.h"
+#endif
+
+#ifndef ENABLE_VM_OBJSPACE
+#ifdef _WIN32
+/*
+ * TODO: object space independent st_table.
+ * socklist needs st_table in rb_w32_sysinit(), before object space
+ * initialization.
+ * It is too early now to change st_hash_type, since it breaks binary
+ * compatibility.
+ */
+#define ENABLE_VM_OBJSPACE 0
+#else
+#define ENABLE_VM_OBJSPACE 1
+#endif
+#endif
+
+#include <setjmp.h>
+#include <signal.h>
+
+#ifndef NSIG
+# define NSIG (_SIGMAX + 1)      /* For QNX */
+#endif
+
+#define RUBY_NSIG NSIG
+
+#ifdef HAVE_STDARG_PROTOTYPES
+#include <stdarg.h>
+#define va_init_list(a,b) va_start((a),(b))
+#else
+#include <varargs.h>
+#define va_init_list(a,b) va_start((a))
+#endif
+
+#if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) && defined(SA_SIGINFO) && !defined(__NetBSD__)
+#define USE_SIGALTSTACK
+#endif
+
+/*****************/
+/* configuration */
+/*****************/
+
+/* gcc ver. check */
+#if defined(__GNUC__) && __GNUC__ >= 2
+
+#if OPT_TOKEN_THREADED_CODE
+#if OPT_DIRECT_THREADED_CODE
+#undef OPT_DIRECT_THREADED_CODE
+#endif
+#endif
+
+#else /* defined(__GNUC__) && __GNUC__ >= 2 */
+
+/* disable threaded code options */
+#if OPT_DIRECT_THREADED_CODE
+#undef OPT_DIRECT_THREADED_CODE
+#endif
+#if OPT_TOKEN_THREADED_CODE
+#undef OPT_TOKEN_THREADED_CODE
+#endif
+#endif
+
+#ifdef __native_client__
+#undef OPT_DIRECT_THREADED_CODE
+#endif
+
+/* call threaded code */
+#if    OPT_CALL_THREADED_CODE
+#if    OPT_DIRECT_THREADED_CODE
+#undef OPT_DIRECT_THREADED_CODE
+#endif /* OPT_DIRECT_THREADED_CODE */
+#if    OPT_STACK_CACHING
+#undef OPT_STACK_CACHING
+#endif /* OPT_STACK_CACHING */
+#endif /* OPT_CALL_THREADED_CODE */
+
+typedef unsigned long rb_num_t;
+
+/* iseq data type */
+
+struct iseq_compile_data_ensure_node_stack;
+
+typedef struct rb_compile_option_struct rb_compile_option_t;
+
+
+struct iseq_inline_cache_entry {
+    rb_serial_t ic_serial;
+    union {
+	size_t index;
+	VALUE value;
+    } ic_value;
+};
+
+union iseq_inline_storage_entry {
+    struct {
+	struct rb_thread_struct *running_thread;
+	VALUE value;
+    } once;
+    struct iseq_inline_cache_entry cache;
+};
+
+/* to avoid warning */
+struct rb_thread_struct;
+struct rb_control_frame_struct;
+
+typedef struct rb_call_info_kw_arg_struct {
+    int keyword_len;
+    VALUE keywords[1];
+} rb_call_info_kw_arg_t;
+
+/* rb_call_info_t contains calling information including inline cache */
+typedef struct rb_call_info_struct {
+    /* fixed at compile time */
+    ID mid;
+
+    unsigned int flag;
+    int orig_argc;
+    rb_iseq_t *blockiseq;
+    rb_call_info_kw_arg_t *kw_arg;
+
+    /* inline cache: keys */
+    rb_serial_t method_state;
+    rb_serial_t class_serial;
+    VALUE klass;
+
+    /* inline cache: values */
+    const rb_method_entry_t *me;
+    VALUE defined_class;
+
+    /* temporary values for method calling */
+    struct rb_block_struct *blockptr;
+    VALUE recv;
+    int argc;
+    union {
+	int opt_pc; /* used by iseq */
+	int index; /* used by ivar */
+	int missing_reason; /* used by method_missing */
+	int inc_sp; /* used by cfunc */
+    } aux;
+
+    VALUE (*call)(struct rb_thread_struct *th, struct rb_control_frame_struct *cfp, struct rb_call_info_struct *ci);
+} rb_call_info_t;
+
+#if 1
+#define GetCoreDataFromValue(obj, type, ptr) do { \
+    (ptr) = (type*)DATA_PTR(obj); \
+} while (0)
+#else
+#define GetCoreDataFromValue(obj, type, ptr) Data_Get_Struct((obj), type, (ptr))
+#endif
+
+#define GetISeqPtr(obj, ptr) \
+  GetCoreDataFromValue((obj), rb_iseq_t, (ptr))
+
+typedef struct rb_iseq_location_struct {
+    const VALUE path;
+    const VALUE absolute_path;
+    const VALUE base_label;
+    const VALUE label;
+    VALUE first_lineno; /* TODO: may be unsigned short */
+} rb_iseq_location_t;
+
+struct rb_iseq_struct;
+
+struct rb_iseq_struct {
+    /***************/
+    /* static data */
+    /***************/
+
+    enum iseq_type {
+	ISEQ_TYPE_TOP,
+	ISEQ_TYPE_METHOD,
+	ISEQ_TYPE_BLOCK,
+	ISEQ_TYPE_CLASS,
+	ISEQ_TYPE_RESCUE,
+	ISEQ_TYPE_ENSURE,
+	ISEQ_TYPE_EVAL,
+	ISEQ_TYPE_MAIN,
+	ISEQ_TYPE_DEFINED_GUARD
+    } type;              /* instruction sequence type */
+#if defined(WORDS_BIGENDIAN) && (SIZEOF_VALUE > SIZEOF_INT)
+    char dummy[SIZEOF_VALUE - SIZEOF_INT]; /* [Bug #10037][ruby-core:63721] */
+#endif
+    int stack_max; /* for stack overflow check */
+
+    rb_iseq_location_t location;
+
+    VALUE *iseq_encoded; /* encoded iseq (insn addr and operands) */
+    unsigned int iseq_size;
+    unsigned int line_info_size;
+
+    const VALUE mark_ary;     /* Array: includes operands which should be GC marked */
+    const VALUE coverage;     /* coverage array */
+
+    /* insn info, must be freed */
+    struct iseq_line_info_entry *line_info_table;
+
+    ID *local_table;		/* must free */
+    int local_table_size;
+
+    /* sizeof(vars) + 1 */
+    int local_size;
+
+    union iseq_inline_storage_entry *is_entries;
+    int is_size;
+
+    int callinfo_size;
+    rb_call_info_t *callinfo_entries;
+
+    /**
+     * parameter information
+     *
+     *  def m(a1, a2, ..., aM,                    # mandatory
+     *        b1=(...), b2=(...), ..., bN=(...),  # optional
+     *        *c,                                 # rest
+     *        d1, d2, ..., dO,                    # post
+     *        e1:(...), e2:(...), ..., eK:(...),  # keyword
+     *        **f,                                # keyword_rest
+     *        &g)                                 # block
+     * =>
+     *
+     *  lead_num     = M
+     *  opt_num      = N
+     *  rest_start   = M+N
+     *  post_start   = M+N+(*1)
+     *  post_num     = O
+     *  keyword_num  = K
+     *  block_start  = M+N+(*1)+O+K
+     *  keyword_bits = M+N+(*1)+O+K+(&1)
+     *  size         = M+N+O+(*1)+K+(&1)+(**1) // parameter size.
+     */
+
+    struct {
+	struct {
+	    unsigned int has_lead   : 1;
+	    unsigned int has_opt    : 1;
+	    unsigned int has_rest   : 1;
+	    unsigned int has_post   : 1;
+	    unsigned int has_kw     : 1;
+	    unsigned int has_kwrest : 1;
+	    unsigned int has_block  : 1;
+
+	    unsigned int ambiguous_param0 : 1; /* {|a|} */
+	} flags;
+
+	int size;
+
+	int lead_num;
+	int opt_num;
+	int rest_start;
+	int post_start;
+	int post_num;
+	int block_start;
+
+	VALUE *opt_table; /* (opt_num + 1) entries. */
+	/* opt_num and opt_table:
+	 *
+	 * def foo o1=e1, o2=e2, ..., oN=eN
+	 * #=>
+	 *   # prologue code
+	 *   A1: e1
+	 *   A2: e2
+	 *   ...
+	 *   AN: eN
+	 *   AL: body
+	 * opt_num = N
+	 * opt_table = [A1, A2, ..., AN, AL]
+	 */
+
+	struct rb_iseq_param_keyword {
+	    int num;
+	    int required_num;
+	    int bits_start;
+	    int rest_start;
+	    ID *table;
+	    VALUE *default_values;
+	} *keyword;
+    } param;
+
+    /* catch table */
+    struct iseq_catch_table *catch_table;
+
+    /* for child iseq */
+    struct rb_iseq_struct *parent_iseq;
+    struct rb_iseq_struct *local_iseq;
+
+    /****************/
+    /* dynamic data */
+    /****************/
+
+    VALUE self;
+    const VALUE orig;			/* non-NULL if its data have origin */
+
+    /* block inlining */
+    /*
+     * NODE *node;
+     * void *special_block_builder;
+     * void *cached_special_block_builder;
+     * VALUE cached_special_block;
+     */
+
+    /* klass/module nest information stack (cref) */
+    NODE * const cref_stack;
+    const VALUE klass;
+
+    /* misc */
+    ID defined_method_id;	/* for define_method */
+    rb_num_t flip_cnt;
+
+    /* used at compile time */
+    struct iseq_compile_data *compile_data;
+
+    /* original iseq, before encoding
+     * used for debug/dump (TODO: union with compile_data) */
+    VALUE *iseq;
+};
+
+enum ruby_special_exceptions {
+    ruby_error_reenter,
+    ruby_error_nomemory,
+    ruby_error_sysstack,
+    ruby_error_closed_stream,
+    ruby_special_error_count
+};
+
+enum ruby_basic_operators {
+    BOP_PLUS,
+    BOP_MINUS,
+    BOP_MULT,
+    BOP_DIV,
+    BOP_MOD,
+    BOP_EQ,
+    BOP_EQQ,
+    BOP_LT,
+    BOP_LE,
+    BOP_LTLT,
+    BOP_AREF,
+    BOP_ASET,
+    BOP_LENGTH,
+    BOP_SIZE,
+    BOP_EMPTY_P,
+    BOP_SUCC,
+    BOP_GT,
+    BOP_GE,
+    BOP_NOT,
+    BOP_NEQ,
+    BOP_MATCH,
+    BOP_FREEZE,
+
+    BOP_LAST_
+};
+
+#define GetVMPtr(obj, ptr) \
+  GetCoreDataFromValue((obj), rb_vm_t, (ptr))
+
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
+struct rb_objspace;
+void rb_objspace_free(struct rb_objspace *);
+#endif
+
+typedef struct rb_hook_list_struct {
+    struct rb_event_hook_struct *hooks;
+    rb_event_flag_t events;
+    int need_clean;
+} rb_hook_list_t;
+
+typedef struct rb_vm_struct {
+    VALUE self;
+
+    rb_global_vm_lock_t gvl;
+    rb_nativethread_lock_t    thread_destruct_lock;
+
+    struct rb_thread_struct *main_thread;
+    struct rb_thread_struct *running_thread;
+
+    struct list_head living_threads;
+    size_t living_thread_num;
+    VALUE thgroup_default;
+
+    int running;
+    int thread_abort_on_exception;
+    int trace_running;
+    volatile int sleeper;
+
+    /* object management */
+    VALUE mark_object_ary;
+
+    const VALUE special_exceptions[ruby_special_error_count];
+
+    /* load */
+    VALUE top_self;
+    VALUE load_path;
+    VALUE load_path_snapshot;
+    VALUE load_path_check_cache;
+    VALUE expanded_load_path;
+    VALUE loaded_features;
+    VALUE loaded_features_snapshot;
+    struct st_table *loaded_features_index;
+    struct st_table *loading_table;
+
+    /* signal */
+    struct {
+	VALUE cmd;
+	int safe;
+    } trap_list[RUBY_NSIG];
+
+    /* hook */
+    rb_hook_list_t event_hooks;
+
+    /* relation table of ensure - rollback for callcc */
+    struct st_table *ensure_rollback_table;
+
+    /* postponed_job */
+    struct rb_postponed_job_struct *postponed_job_buffer;
+    int postponed_job_index;
+
+    int src_encoding_index;
+
+    VALUE verbose, debug, orig_progname, progname;
+    VALUE coverages;
+
+    struct unlinked_method_entry_list_entry *unlinked_method_entry_list;
+
+    VALUE defined_module_hash;
+
+#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
+    struct rb_objspace *objspace;
+#endif
+
+    /*
+     * @shyouhei notes that this is not for storing normal Ruby
+     * objects so do *NOT* mark this when you GC.
+     */
+    struct RArray at_exit;
+
+    VALUE *defined_strings;
+    st_table *frozen_strings;
+
+    /* params */
+    struct { /* size in byte */
+	size_t thread_vm_stack_size;
+	size_t thread_machine_stack_size;
+	size_t fiber_vm_stack_size;
+	size_t fiber_machine_stack_size;
+    } default_params;
+
+    short redefined_flag[BOP_LAST_];
+} rb_vm_t;
+
+/* default values */
+
+#define RUBY_VM_SIZE_ALIGN 4096
+
+#define RUBY_VM_THREAD_VM_STACK_SIZE          ( 128 * 1024 * sizeof(VALUE)) /*  512 KB or 1024 KB */
+#define RUBY_VM_THREAD_VM_STACK_SIZE_MIN      (   2 * 1024 * sizeof(VALUE)) /*    8 KB or   16 KB */
+#define RUBY_VM_THREAD_MACHINE_STACK_SIZE     ( 128 * 1024 * sizeof(VALUE)) /*  512 KB or 1024 KB */
+#define RUBY_VM_THREAD_MACHINE_STACK_SIZE_MIN (  16 * 1024 * sizeof(VALUE)) /*   64 KB or  128 KB */
+
+#define RUBY_VM_FIBER_VM_STACK_SIZE           (  16 * 1024 * sizeof(VALUE)) /*   64 KB or  128 KB */
+#define RUBY_VM_FIBER_VM_STACK_SIZE_MIN       (   2 * 1024 * sizeof(VALUE)) /*    8 KB or   16 KB */
+#define RUBY_VM_FIBER_MACHINE_STACK_SIZE      (  64 * 1024 * sizeof(VALUE)) /*  256 KB or  512 KB */
+#define RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN  (  16 * 1024 * sizeof(VALUE)) /*   64 KB or  128 KB */
+
+/* optimize insn */
+#define FIXNUM_REDEFINED_OP_FLAG (1 << 0)
+#define FLOAT_REDEFINED_OP_FLAG  (1 << 1)
+#define STRING_REDEFINED_OP_FLAG (1 << 2)
+#define ARRAY_REDEFINED_OP_FLAG  (1 << 3)
+#define HASH_REDEFINED_OP_FLAG   (1 << 4)
+#define BIGNUM_REDEFINED_OP_FLAG (1 << 5)
+#define SYMBOL_REDEFINED_OP_FLAG (1 << 6)
+#define TIME_REDEFINED_OP_FLAG   (1 << 7)
+#define REGEXP_REDEFINED_OP_FLAG (1 << 8)
+
+#define BASIC_OP_UNREDEFINED_P(op, klass) (LIKELY((GET_VM()->redefined_flag[(op)]&(klass)) == 0))
+
+#ifndef VM_DEBUG_BP_CHECK
+#define VM_DEBUG_BP_CHECK 0
+#endif
+
+#ifndef VM_DEBUG_VERIFY_METHOD_CACHE
+#define VM_DEBUG_VERIFY_METHOD_CACHE 0
+#endif
+
+typedef struct rb_control_frame_struct {
+    VALUE *pc;			/* cfp[0] */
+    VALUE *sp;			/* cfp[1] */
+    rb_iseq_t *iseq;		/* cfp[2] */
+    VALUE flag;			/* cfp[3] */
+    VALUE self;			/* cfp[4] / block[0] */
+    VALUE klass;		/* cfp[5] / block[1] */
+    VALUE *ep;			/* cfp[6] / block[2] */
+    rb_iseq_t *block_iseq;	/* cfp[7] / block[3] */
+    VALUE proc;			/* cfp[8] / block[4] */
+    const rb_method_entry_t *me;/* cfp[9] */
+
+#if VM_DEBUG_BP_CHECK
+    VALUE *bp_check;		/* cfp[10] */
+#endif
+} rb_control_frame_t;
+
+typedef struct rb_block_struct {
+    VALUE self;			/* share with method frame if it's only block */
+    VALUE klass;		/* share with method frame if it's only block */
+    VALUE *ep;			/* share with method frame if it's only block */
+    rb_iseq_t *iseq;
+    VALUE proc;
+} rb_block_t;
+
+extern const rb_data_type_t ruby_threadptr_data_type;
+
+#define GetThreadPtr(obj, ptr) \
+    TypedData_Get_Struct((obj), rb_thread_t, &ruby_threadptr_data_type, (ptr))
+
+enum rb_thread_status {
+    THREAD_RUNNABLE,
+    THREAD_STOPPED,
+    THREAD_STOPPED_FOREVER,
+    THREAD_KILLED
+};
+
+typedef RUBY_JMP_BUF rb_jmpbuf_t;
+
+/*
+  the members which are written in TH_PUSH_TAG() should be placed at
+  the beginning and the end, so that entire region is accessible.
+*/
+struct rb_vm_tag {
+    VALUE tag;
+    VALUE retval;
+    rb_jmpbuf_t buf;
+    struct rb_vm_tag *prev;
+};
+
+struct rb_vm_protect_tag {
+    struct rb_vm_protect_tag *prev;
+};
+
+struct rb_unblock_callback {
+    rb_unblock_function_t *func;
+    void *arg;
+};
+
+struct rb_mutex_struct;
+
+struct rb_thread_struct;
+typedef struct rb_thread_list_struct{
+    struct rb_thread_list_struct *next;
+    struct rb_thread_struct *th;
+} rb_thread_list_t;
+
+
+typedef struct rb_ensure_entry {
+    VALUE marker;
+    VALUE (*e_proc)(ANYARGS);
+    VALUE data2;
+} rb_ensure_entry_t;
+
+typedef struct rb_ensure_list {
+    struct rb_ensure_list *next;
+    struct rb_ensure_entry entry;
+} rb_ensure_list_t;
+
+typedef char rb_thread_id_string_t[sizeof(rb_nativethread_id_t) * 2 + 3];
+
+typedef struct rb_fiber_struct rb_fiber_t;
+
+typedef struct rb_thread_struct {
+    struct list_node vmlt_node;
+    VALUE self;
+    rb_vm_t *vm;
+
+    /* execution information */
+    VALUE *stack;		/* must free, must mark */
+    size_t stack_size;          /* size in word (byte size / sizeof(VALUE)) */
+    rb_control_frame_t *cfp;
+    int safe_level;
+    int raised_flag;
+    VALUE last_status; /* $? */
+
+    /* passing state */
+    int state;
+
+    int waiting_fd;
+
+    /* for rb_iterate */
+    const rb_block_t *passed_block;
+
+    /* for bmethod */
+    const rb_method_entry_t *passed_bmethod_me;
+
+    /* for cfunc */
+    rb_call_info_t *passed_ci;
+
+    /* for load(true) */
+    VALUE top_self;
+    VALUE top_wrapper;
+
+    /* eval env */
+    rb_block_t *base_block;
+
+    VALUE *root_lep;
+    VALUE root_svar;
+
+    /* thread control */
+    rb_nativethread_id_t thread_id;
+#ifdef NON_SCALAR_THREAD_ID
+    rb_thread_id_string_t thread_id_string;
+#endif
+    enum rb_thread_status status;
+    int to_kill;
+    int priority;
+    int mark_stack_len;
+
+    native_thread_data_t native_thread_data;
+    void *blocking_region_buffer;
+
+    VALUE thgroup;
+    VALUE value;
+
+    /* temporary place of errinfo */
+    VALUE errinfo;
+
+    /* temporary place of retval on OPT_CALL_THREADED_CODE */
+#if OPT_CALL_THREADED_CODE
+    VALUE retval;
+#endif
+
+    /* async errinfo queue */
+    VALUE pending_interrupt_queue;
+    VALUE pending_interrupt_mask_stack;
+    int pending_interrupt_queue_checked;
+
+    rb_atomic_t interrupt_flag;
+    unsigned long interrupt_mask;
+    rb_nativethread_lock_t interrupt_lock;
+    rb_nativethread_cond_t interrupt_cond;
+    struct rb_unblock_callback unblock;
+    VALUE locking_mutex;
+    struct rb_mutex_struct *keeping_mutexes;
+
+    struct rb_vm_tag *tag;
+    struct rb_vm_protect_tag *protect_tag;
+
+    /*! Thread-local state of evaluation context.
+     *
+     *  If negative, this thread is evaluating the main program.
+     *  If positive, this thread is evaluating a program under Kernel::eval
+     *  family.
+     */
+    int parse_in_eval;
+
+    /*! Thread-local state of compiling context.
+     *
+     * If non-zero, the parser does not automatically print error messages to
+     * stderr. */
+    int mild_compile_error;
+
+    /* storage */
+    st_table *local_storage;
+    VALUE local_storage_recursive_hash;
+    VALUE local_storage_recursive_hash_for_trace;
+
+    rb_thread_list_t *join_list;
+
+    VALUE first_proc;
+    VALUE first_args;
+    VALUE (*first_func)(ANYARGS);
+
+    /* for GC */
+    struct {
+	VALUE *stack_start;
+	VALUE *stack_end;
+	size_t stack_maxsize;
+#ifdef __ia64
+	VALUE *register_stack_start;
+	VALUE *register_stack_end;
+	size_t register_stack_maxsize;
+#endif
+	jmp_buf regs;
+    } machine;
+
+    /* statistics data for profiler */
+    VALUE stat_insn_usage;
+
+    /* tracer */
+    rb_hook_list_t event_hooks;
+    struct rb_trace_arg_struct *trace_arg; /* trace information */
+
+    /* fiber */
+    rb_fiber_t *fiber;
+    rb_fiber_t *root_fiber;
+    rb_jmpbuf_t root_jmpbuf;
+
+    /* ensure & callcc */
+    rb_ensure_list_t *ensure_list;
+
+    /* misc */
+    int method_missing_reason;
+    int abort_on_exception;
+#ifdef USE_SIGALTSTACK
+    void *altstack;
+#endif
+    unsigned long running_time_us;
+} rb_thread_t;
+
+typedef enum {
+    VM_DEFINECLASS_TYPE_CLASS           = 0x00,
+    VM_DEFINECLASS_TYPE_SINGLETON_CLASS = 0x01,
+    VM_DEFINECLASS_TYPE_MODULE          = 0x02,
+    /* 0x03..0x06 is reserved */
+    VM_DEFINECLASS_TYPE_MASK            = 0x07
+} rb_vm_defineclass_type_t;
+
+#define VM_DEFINECLASS_TYPE(x) ((rb_vm_defineclass_type_t)(x) & VM_DEFINECLASS_TYPE_MASK)
+#define VM_DEFINECLASS_FLAG_SCOPED         0x08
+#define VM_DEFINECLASS_FLAG_HAS_SUPERCLASS 0x10
+#define VM_DEFINECLASS_SCOPED_P(x) ((x) & VM_DEFINECLASS_FLAG_SCOPED)
+#define VM_DEFINECLASS_HAS_SUPERCLASS_P(x) \
+    ((x) & VM_DEFINECLASS_FLAG_HAS_SUPERCLASS)
+
+/* iseq.c */
+RUBY_SYMBOL_EXPORT_BEGIN
+
+/* node -> iseq */
+VALUE rb_iseq_new(NODE*, VALUE, VALUE, VALUE, VALUE, enum iseq_type);
+VALUE rb_iseq_new_top(NODE *node, VALUE name, VALUE path, VALUE absolute_path, VALUE parent);
+VALUE rb_iseq_new_main(NODE *node, VALUE path, VALUE absolute_path);
+VALUE rb_iseq_new_with_bopt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE, enum iseq_type, VALUE);
+VALUE rb_iseq_new_with_opt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE, enum iseq_type, const rb_compile_option_t*);
+
+/* src -> iseq */
+VALUE rb_iseq_compile(VALUE src, VALUE file, VALUE line);
+VALUE rb_iseq_compile_on_base(VALUE src, VALUE file, VALUE line, rb_block_t *base_block);
+VALUE rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE absolute_path, VALUE line, rb_block_t *base_block, VALUE opt);
+
+VALUE rb_iseq_disasm(VALUE self);
+int rb_iseq_disasm_insn(VALUE str, const VALUE *iseqval, size_t pos, const rb_iseq_t *iseq, VALUE child);
+const char *ruby_node_name(int node);
+
+RUBY_EXTERN VALUE rb_cISeq;
+RUBY_EXTERN VALUE rb_cRubyVM;
+RUBY_EXTERN VALUE rb_cEnv;
+RUBY_EXTERN VALUE rb_mRubyVMFrozenCore;
+RUBY_SYMBOL_EXPORT_END
+
+#define GetProcPtr(obj, ptr) \
+  GetCoreDataFromValue((obj), rb_proc_t, (ptr))
+
+typedef struct {
+    rb_block_t block;
+
+    VALUE envval;		/* for GC mark */
+    VALUE blockprocval;
+    int8_t safe_level;		/* 0..3 */
+    int8_t is_from_method;	/* bool */
+    int8_t is_lambda;		/* bool */
+} rb_proc_t;
+
+#define GetEnvPtr(obj, ptr) \
+  GetCoreDataFromValue((obj), rb_env_t, (ptr))
+
+typedef struct {
+    int env_size;
+    int local_size;
+    VALUE prev_envval;		/* for GC mark */
+    rb_block_t block;
+    VALUE env[1];               /* flexible array */
+} rb_env_t;
+
+extern const rb_data_type_t ruby_binding_data_type;
+
+#define GetBindingPtr(obj, ptr) \
+  GetCoreDataFromValue((obj), rb_binding_t, (ptr))
+
+typedef struct {
+    VALUE env;
+    VALUE path;
+    VALUE blockprocval;	/* for GC mark */
+    VALUE cfp; // pgbovine -- address of frame object, to get its unique id
+    unsigned short first_lineno;
+} rb_binding_t;
+
+/* used by compile time and send insn */
+
+enum vm_check_match_type {
+    VM_CHECKMATCH_TYPE_WHEN = 1,
+    VM_CHECKMATCH_TYPE_CASE = 2,
+    VM_CHECKMATCH_TYPE_RESCUE = 3
+};
+
+#define VM_CHECKMATCH_TYPE_MASK   0x03
+#define VM_CHECKMATCH_ARRAY       0x04
+
+#define VM_CALL_ARGS_SPLAT      (0x01 << 1) /* m(*args) */
+#define VM_CALL_ARGS_BLOCKARG   (0x01 << 2) /* m(&block) */
+#define VM_CALL_FCALL           (0x01 << 3) /* m(...) */
+#define VM_CALL_VCALL           (0x01 << 4) /* m */
+#define VM_CALL_TAILCALL        (0x01 << 5) /* located at tail position */
+#define VM_CALL_SUPER           (0x01 << 6) /* super */
+#define VM_CALL_OPT_SEND        (0x01 << 7) /* internal flag */
+#define VM_CALL_ARGS_SIMPLE     (0x01 << 8) /* (ci->flag & (SPLAT|BLOCKARG)) && ci->blockiseq == NULL && ci->kw_arg == NULL */
+
+enum vm_special_object_type {
+    VM_SPECIAL_OBJECT_VMCORE = 1,
+    VM_SPECIAL_OBJECT_CBASE,
+    VM_SPECIAL_OBJECT_CONST_BASE
+};
+
+#define VM_FRAME_MAGIC_METHOD 0x11
+#define VM_FRAME_MAGIC_BLOCK  0x21
+#define VM_FRAME_MAGIC_CLASS  0x31
+#define VM_FRAME_MAGIC_TOP    0x41
+#define VM_FRAME_MAGIC_CFUNC  0x61
+#define VM_FRAME_MAGIC_PROC   0x71
+#define VM_FRAME_MAGIC_IFUNC  0x81
+#define VM_FRAME_MAGIC_EVAL   0x91
+#define VM_FRAME_MAGIC_LAMBDA 0xa1
+#define VM_FRAME_MAGIC_RESCUE 0xb1
+#define VM_FRAME_MAGIC_MASK_BITS 8
+#define VM_FRAME_MAGIC_MASK   (~(~(VALUE)0<<VM_FRAME_MAGIC_MASK_BITS))
+
+#define VM_FRAME_TYPE(cfp) ((cfp)->flag & VM_FRAME_MAGIC_MASK)
+
+/* other frame flag */
+#define VM_FRAME_FLAG_PASSED  0x0100
+#define VM_FRAME_FLAG_FINISH  0x0200
+#define VM_FRAME_FLAG_BMETHOD 0x0400
+#define VM_FRAME_TYPE_FINISH_P(cfp)  (((cfp)->flag & VM_FRAME_FLAG_FINISH) != 0)
+#define VM_FRAME_TYPE_BMETHOD_P(cfp) (((cfp)->flag & VM_FRAME_FLAG_BMETHOD) != 0)
+
+#define RUBYVM_CFUNC_FRAME_P(cfp) \
+  (VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC)
+
+/* inline cache */
+typedef struct iseq_inline_cache_entry *IC;
+typedef rb_call_info_t *CALL_INFO;
+
+void rb_vm_change_state(void);
+
+typedef VALUE CDHASH;
+
+#ifndef FUNC_FASTCALL
+#define FUNC_FASTCALL(x) x
+#endif
+
+typedef rb_control_frame_t *
+  (FUNC_FASTCALL(*rb_insn_func_t))(rb_thread_t *, rb_control_frame_t *);
+
+#define GC_GUARDED_PTR(p)     ((VALUE)((VALUE)(p) | 0x01))
+#define GC_GUARDED_PTR_REF(p) ((void *)(((VALUE)(p)) & ~0x03))
+#define GC_GUARDED_PTR_P(p)   (((VALUE)(p)) & 0x01)
+
+/*
+ * block frame:
+ *  ep[ 0]: prev frame
+ *  ep[-1]: CREF (for *_eval)
+ *
+ * method frame:
+ *  ep[ 0]: block pointer (ptr | VM_ENVVAL_BLOCK_PTR_FLAG)
+ */
+
+#define VM_ENVVAL_BLOCK_PTR_FLAG 0x02
+#define VM_ENVVAL_BLOCK_PTR(v)     (GC_GUARDED_PTR(v) | VM_ENVVAL_BLOCK_PTR_FLAG)
+#define VM_ENVVAL_BLOCK_PTR_P(v)   ((v) & VM_ENVVAL_BLOCK_PTR_FLAG)
+#define VM_ENVVAL_PREV_EP_PTR(v)   ((VALUE)GC_GUARDED_PTR(v))
+#define VM_ENVVAL_PREV_EP_PTR_P(v) (!(VM_ENVVAL_BLOCK_PTR_P(v)))
+
+#define VM_EP_PREV_EP(ep)   ((VALUE *)GC_GUARDED_PTR_REF((ep)[0]))
+#define VM_EP_BLOCK_PTR(ep) ((rb_block_t *)GC_GUARDED_PTR_REF((ep)[0]))
+#define VM_EP_LEP_P(ep)     VM_ENVVAL_BLOCK_PTR_P((ep)[0])
+
+VALUE *rb_vm_ep_local_ep(VALUE *ep);
+rb_block_t *rb_vm_control_frame_block_ptr(rb_control_frame_t *cfp);
+
+#define RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp) ((cfp)+1)
+#define RUBY_VM_NEXT_CONTROL_FRAME(cfp) ((cfp)-1)
+#define RUBY_VM_END_CONTROL_FRAME(th) \
+  ((rb_control_frame_t *)((th)->stack + (th)->stack_size))
+#define RUBY_VM_VALID_CONTROL_FRAME_P(cfp, ecfp) \
+  ((void *)(ecfp) > (void *)(cfp))
+#define RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp) \
+  (!RUBY_VM_VALID_CONTROL_FRAME_P((cfp), RUBY_VM_END_CONTROL_FRAME(th)))
+
+#define RUBY_VM_IFUNC_P(ptr)        (BUILTIN_TYPE(ptr) == T_NODE)
+#define RUBY_VM_NORMAL_ISEQ_P(ptr) \
+  ((ptr) && !RUBY_VM_IFUNC_P(ptr))
+
+#define RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp) ((rb_block_t *)(&(cfp)->self))
+#define RUBY_VM_GET_CFP_FROM_BLOCK_PTR(b) \
+  ((rb_control_frame_t *)((VALUE *)(b) - 4))
+/* magic number `4' is depend on rb_control_frame_t layout. */
+
+/* VM related object allocate functions */
+VALUE rb_thread_alloc(VALUE klass);
+VALUE rb_proc_wrap(VALUE klass, rb_proc_t *); /* may use with rb_proc_alloc */
+VALUE rb_binding_alloc(VALUE klass);
+
+/* for debug */
+extern void rb_vmdebug_stack_dump_raw(rb_thread_t *, rb_control_frame_t *);
+extern void rb_vmdebug_debug_print_pre(rb_thread_t *th, rb_control_frame_t *cfp, VALUE *_pc);
+extern void rb_vmdebug_debug_print_post(rb_thread_t *th, rb_control_frame_t *cfp);
+
+#define SDR() rb_vmdebug_stack_dump_raw(GET_THREAD(), GET_THREAD()->cfp)
+#define SDR2(cfp) rb_vmdebug_stack_dump_raw(GET_THREAD(), (cfp))
+void rb_vm_bugreport(const void *);
+NORETURN(void rb_bug_context(const void *, const char *fmt, ...));
+
+/* functions about thread/vm execution */
+RUBY_SYMBOL_EXPORT_BEGIN
+VALUE rb_iseq_eval(VALUE iseqval);
+VALUE rb_iseq_eval_main(VALUE iseqval);
+RUBY_SYMBOL_EXPORT_END
+int rb_thread_method_id_and_class(rb_thread_t *th, ID *idp, VALUE *klassp);
+
+VALUE rb_vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc,
+			int argc, const VALUE *argv, const rb_block_t *blockptr);
+VALUE rb_vm_make_proc_lambda(rb_thread_t *th, const rb_block_t *block, VALUE klass, int8_t is_lambda);
+VALUE rb_vm_make_proc(rb_thread_t *th, const rb_block_t *block, VALUE klass);
+VALUE rb_vm_make_binding(rb_thread_t *th, const rb_control_frame_t *src_cfp);
+VALUE rb_vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp);
+VALUE rb_vm_env_local_variables(VALUE envval);
+VALUE *rb_binding_add_dynavars(rb_binding_t *bind, int dyncount, const ID *dynvars);
+void rb_vm_inc_const_missing_count(void);
+void rb_vm_gvl_destroy(rb_vm_t *vm);
+VALUE rb_vm_call(rb_thread_t *th, VALUE recv, VALUE id, int argc,
+		 const VALUE *argv, const rb_method_entry_t *me,
+		 VALUE defined_class);
+void rb_unlink_method_entry(rb_method_entry_t *me);
+void rb_gc_mark_unlinked_live_method_entries(void *pvm);
+
+void rb_thread_start_timer_thread(void);
+void rb_thread_stop_timer_thread(int);
+void rb_thread_reset_timer_thread(void);
+void rb_thread_wakeup_timer_thread(void);
+
+static inline void
+rb_vm_living_threads_init(rb_vm_t *vm)
+{
+    list_head_init(&vm->living_threads);
+    vm->living_thread_num = 0;
+}
+
+static inline void
+rb_vm_living_threads_insert(rb_vm_t *vm, rb_thread_t *th)
+{
+    list_add_tail(&vm->living_threads, &th->vmlt_node);
+    vm->living_thread_num++;
+}
+
+static inline void
+rb_vm_living_threads_remove(rb_vm_t *vm, rb_thread_t *th)
+{
+    list_del(&th->vmlt_node);
+    vm->living_thread_num--;
+}
+
+int ruby_thread_has_gvl_p(void);
+typedef int rb_backtrace_iter_func(void *, VALUE, int, VALUE);
+rb_control_frame_t *rb_vm_get_ruby_level_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp);
+rb_control_frame_t *rb_vm_get_binding_creatable_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp);
+int rb_vm_get_sourceline(const rb_control_frame_t *);
+VALUE rb_name_err_mesg_new(VALUE obj, VALUE mesg, VALUE recv, VALUE method);
+void rb_vm_stack_to_heap(rb_thread_t *th);
+void ruby_thread_init_stack(rb_thread_t *th);
+int rb_vm_control_frame_id_and_class(const rb_control_frame_t *cfp, ID *idp, VALUE *klassp);
+void rb_vm_rewind_cfp(rb_thread_t *th, rb_control_frame_t *cfp);
+
+void rb_vm_register_special_exception(enum ruby_special_exceptions sp, VALUE exception_class, const char *mesg);
+
+void rb_gc_mark_machine_stack(rb_thread_t *th);
+
+int rb_autoloading_value(VALUE mod, ID id, VALUE* value);
+
+void rb_vm_rewrite_cref_stack(NODE *node, VALUE old_klass, VALUE new_klass, NODE **new_cref_ptr);
+
+#define sysstack_error GET_VM()->special_exceptions[ruby_error_sysstack]
+
+#define RUBY_CONST_ASSERT(expr) (1/!!(expr)) /* expr must be a compile-time constant */
+#define VM_STACK_OVERFLOWED_P(cfp, sp, margin) \
+    (!RUBY_CONST_ASSERT(sizeof(*(sp)) == sizeof(VALUE)) || \
+     !RUBY_CONST_ASSERT(sizeof(*(cfp)) == sizeof(rb_control_frame_t)) || \
+     ((rb_control_frame_t *)((sp) + (margin)) + 1) >= (cfp))
+#define WHEN_VM_STACK_OVERFLOWED(cfp, sp, margin) \
+    if (LIKELY(!VM_STACK_OVERFLOWED_P(cfp, sp, margin))) {(void)0;} else /* overflowed */
+#define CHECK_VM_STACK_OVERFLOW0(cfp, sp, margin) \
+    WHEN_VM_STACK_OVERFLOWED(cfp, sp, margin) vm_stackoverflow()
+#define CHECK_VM_STACK_OVERFLOW(cfp, margin) \
+    WHEN_VM_STACK_OVERFLOWED(cfp, (cfp)->sp, margin) vm_stackoverflow()
+
+/* for thread */
+
+#if RUBY_VM_THREAD_MODEL == 2
+extern rb_thread_t *ruby_current_thread;
+extern rb_vm_t *ruby_current_vm;
+extern rb_event_flag_t ruby_vm_event_flags;
+
+#define GET_VM() ruby_current_vm
+
+#ifndef OPT_CALL_CFUNC_WITHOUT_FRAME
+#define OPT_CALL_CFUNC_WITHOUT_FRAME 0
+#endif
+
+static inline rb_thread_t *
+GET_THREAD(void)
+{
+    rb_thread_t *th = ruby_current_thread;
+#if OPT_CALL_CFUNC_WITHOUT_FRAME
+    if (UNLIKELY(th->passed_ci != 0)) {
+	void vm_call_cfunc_push_frame(rb_thread_t *th);
+	vm_call_cfunc_push_frame(th);
+    }
+#endif
+    return th;
+}
+
+#define rb_thread_set_current_raw(th) (void)(ruby_current_thread = (th))
+#define rb_thread_set_current(th) do { \
+    if ((th)->vm->running_thread != (th)) { \
+	(th)->running_time_us = 0; \
+    } \
+    rb_thread_set_current_raw(th); \
+    (th)->vm->running_thread = (th); \
+} while (0)
+
+#else
+#error "unsupported thread model"
+#endif
+
+enum {
+    TIMER_INTERRUPT_MASK         = 0x01,
+    PENDING_INTERRUPT_MASK       = 0x02,
+    POSTPONED_JOB_INTERRUPT_MASK = 0x04,
+    TRAP_INTERRUPT_MASK	         = 0x08
+};
+
+#define RUBY_VM_SET_TIMER_INTERRUPT(th)		ATOMIC_OR((th)->interrupt_flag, TIMER_INTERRUPT_MASK)
+#define RUBY_VM_SET_INTERRUPT(th)		ATOMIC_OR((th)->interrupt_flag, PENDING_INTERRUPT_MASK)
+#define RUBY_VM_SET_POSTPONED_JOB_INTERRUPT(th)	ATOMIC_OR((th)->interrupt_flag, POSTPONED_JOB_INTERRUPT_MASK)
+#define RUBY_VM_SET_TRAP_INTERRUPT(th)		ATOMIC_OR((th)->interrupt_flag, TRAP_INTERRUPT_MASK)
+#define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & ~(th)->interrupt_mask & (PENDING_INTERRUPT_MASK|TRAP_INTERRUPT_MASK))
+#define RUBY_VM_INTERRUPTED_ANY(th) ((th)->interrupt_flag & ~(th)->interrupt_mask)
+
+int rb_signal_buff_size(void);
+void rb_signal_exec(rb_thread_t *th, int sig);
+void rb_threadptr_check_signal(rb_thread_t *mth);
+void rb_threadptr_signal_raise(rb_thread_t *th, int sig);
+void rb_threadptr_signal_exit(rb_thread_t *th);
+void rb_threadptr_execute_interrupts(rb_thread_t *, int);
+void rb_threadptr_interrupt(rb_thread_t *th);
+void rb_threadptr_unlock_all_locking_mutexes(rb_thread_t *th);
+void rb_threadptr_pending_interrupt_clear(rb_thread_t *th);
+void rb_threadptr_pending_interrupt_enque(rb_thread_t *th, VALUE v);
+int rb_threadptr_pending_interrupt_active_p(rb_thread_t *th);
+
+#define RUBY_VM_CHECK_INTS_BLOCKING(th) do {				\
+	if (UNLIKELY(!rb_threadptr_pending_interrupt_empty_p(th))) {	\
+	    th->pending_interrupt_queue_checked = 0;			\
+	    RUBY_VM_SET_INTERRUPT(th);					\
+	    rb_threadptr_execute_interrupts(th, 1);			\
+	}								\
+	else if (UNLIKELY(RUBY_VM_INTERRUPTED_ANY(th))) {		\
+	    rb_threadptr_execute_interrupts(th, 1);			\
+	}								\
+    } while (0)
+
+#define RUBY_VM_CHECK_INTS(th) do { \
+    if (UNLIKELY(RUBY_VM_INTERRUPTED_ANY(th))) {	\
+	rb_threadptr_execute_interrupts(th, 0); \
+    } \
+} while (0)
+
+/* tracer */
+struct rb_trace_arg_struct {
+    rb_event_flag_t event;
+    rb_thread_t *th;
+    rb_control_frame_t *cfp;
+    VALUE self;
+    ID id;
+    VALUE klass;
+    VALUE data;
+
+    int klass_solved;
+
+    /* calc from cfp */
+    int lineno;
+    VALUE path;
+};
+
+void rb_threadptr_exec_event_hooks(struct rb_trace_arg_struct *trace_arg);
+void rb_threadptr_exec_event_hooks_and_pop_frame(struct rb_trace_arg_struct *trace_arg);
+
+#define EXEC_EVENT_HOOK_ORIG(th_, flag_, self_, id_, klass_, data_, pop_p_) do { \
+    if (UNLIKELY(ruby_vm_event_flags & (flag_))) { \
+	if (((th)->event_hooks.events | (th)->vm->event_hooks.events) & (flag_)) { \
+	    struct rb_trace_arg_struct trace_arg; \
+	    trace_arg.event = (flag_); \
+	    trace_arg.th = (th_); \
+	    trace_arg.cfp = (trace_arg.th)->cfp; \
+	    trace_arg.self = (self_); \
+	    trace_arg.id = (id_); \
+	    trace_arg.klass = (klass_); \
+	    trace_arg.data = (data_); \
+	    trace_arg.path = Qundef; \
+	    trace_arg.klass_solved = 0; \
+	    if (pop_p_) rb_threadptr_exec_event_hooks_and_pop_frame(&trace_arg); \
+	    else rb_threadptr_exec_event_hooks(&trace_arg); \
+	} \
+    } \
+} while (0)
+
+#define EXEC_EVENT_HOOK(th_, flag_, self_, id_, klass_, data_) \
+  EXEC_EVENT_HOOK_ORIG(th_, flag_, self_, id_, klass_, data_, 0)
+
+#define EXEC_EVENT_HOOK_AND_POP_FRAME(th_, flag_, self_, id_, klass_, data_) \
+  EXEC_EVENT_HOOK_ORIG(th_, flag_, self_, id_, klass_, data_, 1)
+
+RUBY_SYMBOL_EXPORT_BEGIN
+
+int rb_thread_check_trap_pending(void);
+
+extern VALUE rb_get_coverages(void);
+extern void rb_set_coverages(VALUE);
+extern void rb_reset_coverages(void);
+
+void rb_postponed_job_flush(rb_vm_t *vm);
+
+RUBY_SYMBOL_EXPORT_END
+
+#endif /* RUBY_VM_CORE_H */
diff --git a/v4-cokapi/backends/ruby/custom-ruby-interpreter/ruby-2.2.2.tar.gz b/v4-cokapi/backends/ruby/custom-ruby-interpreter/ruby-2.2.2.tar.gz
new file mode 100644
index 000000000..1b54078b9
Binary files /dev/null and b/v4-cokapi/backends/ruby/custom-ruby-interpreter/ruby-2.2.2.tar.gz differ
diff --git a/v4-cokapi/backends/ruby/golden_test.py b/v4-cokapi/backends/ruby/golden_test.py
new file mode 100644
index 000000000..1df19c1c5
--- /dev/null
+++ b/v4-cokapi/backends/ruby/golden_test.py
@@ -0,0 +1,224 @@
+''' 
+A simple framework for regression testing based on golden files
+by Philip Guo
+'''
+
+# find all input files with extension INPUT_FILE_EXTENSION in TESTDIRS
+TESTDIRS = ['tests/']
+INPUT_FILE_EXTENSION = '.rb'
+
+# program to run, with input file as an extra argument
+PROGRAM = ['./ruby', 'pg_logger.rb', '-f']
+
+# this program should output to stdout, which will be redirected to this
+# extension:
+OUTPUT_FILE_EXTENSION = '.out'
+
+# extension for golden files:
+GOLDEN_FILE_EXTENSION = '.golden'
+
+
+import itertools
+import os, re, shutil, optparse, difflib
+from subprocess import *
+
+RED   = '\033[91m'
+ENDC  = '\033[0m'  # end color
+
+import re
+memaddr_RE = re.compile('0x[0-9a-f]+')
+
+# canonicalize all object IDs, such as "206":
+# since they sometimes vary across executions due to different memory
+# layout and such
+objid_RE = re.compile('"\d+":')
+
+# also canonicalize the corresponding reference IDs, such as "REF",\n386
+# (but note that this must be run on all lines together, not just
+# individual lines, since it spans two lines)
+objrefid_RE = re.compile('"REF",\s+\d+')
+
+def filter_output(lines):
+  # substitute memory addresses with 0xADDR to prevent spurious diffs
+  x = [memaddr_RE.sub('0xADDR', s) for s in lines]
+  x = [objid_RE.sub('"ID":', s) for s in x]
+
+  # hack: string it all together into one giant string before doing a
+  # multi-line comparison
+  fullstr = ''.join(x) # don't need an extra newline since all lines are already separated by newline chars
+  fullstr = objrefid_RE.sub('"REF", ID', fullstr)
+  ret = fullstr.split('\n') # split again to get a list of lines
+  return ret
+
+
+def execute(input_filename):
+  assert os.path.isfile(input_filename)
+  (base, ext) = os.path.splitext(input_filename)
+  assert ext == INPUT_FILE_EXTENSION
+
+  (stdout, stderr) = Popen(PROGRAM + [input_filename], stdout=PIPE, stderr=PIPE).communicate()
+
+  if stderr:
+    print '(has stderr)'
+  #  print '  stderr {'
+  #  print stderr, '}'
+  else:
+    print
+
+  # capture stdout into outfile, filtering out machine-specific addresses
+  outfile = base + OUTPUT_FILE_EXTENSION
+  outf = open(outfile, 'w')
+
+  for line in stdout.splitlines():
+    filtered_line = re.sub(' 0x.+?>', ' 0xADDR>', line)
+    print >> outf, filtered_line
+
+  outf.close()
+
+
+def clobber_golden_file(golden_file):
+  (base, ext) = os.path.splitext(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+  print '  Clobber %s => %s' % (outfile, golden_file)
+  shutil.copy(outfile, golden_file)
+
+
+# returns True if there is a diff, False otherwise
+def golden_differs_from_out(golden_file):
+  (base, ext) = os.path.splitext(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+  assert os.path.isfile(golden_file)
+
+  golden_s = open(golden_file).readlines()
+  out_s = open(outfile).readlines()
+
+  golden_s_filtered = filter_output(golden_s)
+  out_s_filtered = filter_output(out_s)
+
+  return out_s_filtered != golden_s_filtered
+
+
+# for sanity checking
+def print_filtered_outfile(test_name):
+  (base, ext) = os.path.splitext(test_name)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+
+  out_s = open(outfile).readlines()
+  out_s_filtered = filter_output(out_s)
+  for line in out_s_filtered:
+    print line
+
+
+def diff_test_output(test_name):
+  (base, ext) = os.path.splitext(test_name)
+
+  golden_file = base + GOLDEN_FILE_EXTENSION
+  assert os.path.isfile(golden_file)
+  outfile = base + OUTPUT_FILE_EXTENSION
+  assert os.path.isfile(outfile)
+
+  golden_s = open(golden_file).readlines()
+  out_s = open(outfile).readlines()
+
+  golden_s_filtered = filter_output(golden_s)
+  out_s_filtered = filter_output(out_s)
+
+  first_line = True
+  for line in difflib.unified_diff(golden_s_filtered, out_s_filtered, \
+                                   fromfile=golden_file, tofile=outfile):
+    if first_line:
+      print # print an extra line to ease readability
+      first_line = False
+    print line
+
+
+def run_test(input_filename, clobber_golden=False):
+  print 'Testing', input_filename,
+
+  (base, ext) = os.path.splitext(input_filename)
+  assert ext == INPUT_FILE_EXTENSION
+
+  # to eliminate possibility of using stale output:
+  outfile = base + OUTPUT_FILE_EXTENSION
+  if os.path.isfile(outfile):
+    os.remove(outfile)
+
+  input_fullpath = input_filename
+  execute(input_fullpath)
+
+  golden_file = base + GOLDEN_FILE_EXTENSION
+  if os.path.isfile(golden_file):
+    if golden_differs_from_out(golden_file):
+      print "  " + RED + "FAILED!!!" + ENDC
+    if clobber_golden:
+      clobber_golden_file(golden_file)
+  else:
+    clobber_golden_file(golden_file)
+
+
+def run_all_tests(clobber=False):
+  for t in ALL_TESTS:
+    run_test(t, clobber)
+
+def diff_all_test_outputs():
+  for t in ALL_TESTS:
+    diff_test_output(t)
+
+
+if __name__ == "__main__":
+  parser = optparse.OptionParser()
+  parser.add_option("--all", action="store_true", dest="run_all",
+                    help="Run all tests")
+  parser.add_option("--only-clobber", action="store_true", dest="only_clobber",
+                    help="Clobber ALL golden files WITHOUT re-running tests")
+  parser.add_option("--clobber", action="store_true", dest="clobber",
+                    help="Clobber golden files when running tests")
+  parser.add_option("--test", dest="test_name",
+                    help="Run one test")
+  parser.add_option("--difftest", dest="diff_test_name",
+                    help="Diff against golden file for one test")
+  parser.add_option("--print-filtered-output", dest="print_test_name",
+                    help="Print the filtered output for one test")
+  parser.add_option("--diffall", action="store_true", dest="diff_all",
+                    help="Diff against golden file for all tests")
+  (options, args) = parser.parse_args()
+
+  ALL_TESTS = []
+
+  for (pwd, subdirs, files) in itertools.chain(*[os.walk(e) for e in TESTDIRS]):
+    for f in files:
+      (base, ext) = os.path.splitext(f)
+      if ext == INPUT_FILE_EXTENSION:
+        fullpath = os.path.join(pwd, f)
+        ALL_TESTS.append(fullpath)
+
+
+  if options.run_all:
+    if options.clobber:
+      print 'Running all tests and clobbering results ...'
+    else:
+      print 'Running all tests ...'
+    run_all_tests(options.clobber)
+
+  elif options.diff_all:
+    diff_all_test_outputs()
+  elif options.print_test_name:
+    assert options.print_test_name in ALL_TESTS
+    print_filtered_outfile(options.print_test_name)
+  elif options.diff_test_name:
+    assert options.diff_test_name in ALL_TESTS
+    diff_test_output(options.diff_test_name)
+  elif options.test_name:
+    assert options.test_name in ALL_TESTS
+    run_test(options.test_name, options.clobber)
+  elif options.only_clobber:
+    for t in ALL_TESTS:
+      (base, ext) = os.path.splitext(t)
+      golden_file = base + GOLDEN_FILE_EXTENSION
+      clobber_golden_file(golden_file)
+  else:
+    parser.print_help()
+
diff --git a/v4-cokapi/backends/ruby/notes.txt b/v4-cokapi/backends/ruby/notes.txt
new file mode 100644
index 000000000..e80987f80
--- /dev/null
+++ b/v4-cokapi/backends/ruby/notes.txt
@@ -0,0 +1,114 @@
+---
+2015-06-28
+
+Starting to learn Ruby to build an OPT backend for it ... relevant notes
+
+test cases in tests/
+
+gets is like raw_input, so should support that eventually since
+raw_input is a pretty popular OPT feature
+
+must richly support lambdas -- TODO: what are they called in ruby?!?
+
+ok there's local variable scoping even within a loop, which doesn't
+exist in Python/JS. so we might need more frames than just for function
+calls
+
+global variables are prefaced with $, but they're ugly and non-idiomatic
+but 'constants' (identifiers starting with a capital letter) can also be
+global in scope
+
+since everything is an object in Ruby, we need to make some
+simplifications for the visualization; e.g., it's overkill to show the
+entire class hierarchy for a 'primitive' Fixnum (number) object.
+
+Terminology translation:
+  Python 'list', Ruby 'array'
+  Python 'dict', Ruby 'hash'
+
+Ruby strings are mutable ... but i don't think that affects the
+visualization at all
+
+Ruby block is crucial for scoping! need to definitely support it well
+  - maybe extract out the actual source code for the block to display
+    it, like we do for JS funcs?
+
+symbols should probably be rendered specially
+
+hmmm, how do we visualize 'extensions' to built-in classes, such as:
+
+class Array
+  def iterate!
+    self.each_with_index { |n, i|
+      self[i] = yield(n)
+    }
+  end
+end
+
+see
+http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/
+choice excerpt: "So to recap, we went through Ruby’s four closure types,
+blocks, Procs, lambdas and Methods. We also know that blocks and Procs
+act like drop-in code snippets, while lambdas and Methods act just like
+methods."
+
+A lambda is simply a block with a name. but Proc (with a capital P)
+isn't the same as a lambda. a lambda is simply an anonymous method.
+
+
+Look into using reflection methods such as Kernel::local_variables,
+Object::instance_variables, global_variables, constants, methods,
+instance_methods, etc.
+
+Use 'set' subtraction using '-':
+  class Dog
+    attr :bark, true
+  end
+  Dog.instance_methods - Object.instance_methods
+
+or even better, use Dog.instance_methods(false) to not get your
+ancestors' methods!
+
+we need to display 'module' contents and how a class includes (points
+to) a module, since that's a central concept for mixins
+
+interesting -- classes can be 'opened' multiple times and have stuff
+added to them (even stdlib classes)
+
+
+it looks like we should target Ruby 2.X since there's the TracePoint
+class for easy tracing:
+http://ruby-doc.org/core-2.0.0/TracePoint.html
+
+the byebug debugger builds upon it:
+https://github.com/deivid-rodriguez/byebug
+
+
+more misc docs:
+http://stackoverflow.com/questions/30584454/get-method-arguments-using-rubys-tracepoint
+http://kgrz.io/2014/04/19/ruby-trace-leave-oh-my.html
+
+
+StringIO could be useful:
+http://ruby-doc.org/stdlib-2.0.0/libdoc/stringio/rdoc/StringIO.html
+
+maybe use eval as well?
+http://polishinggems.blogspot.com/2011/06/how-to-evaluate-ruby-script-file-from.html
+
+---
+2015-07-06
+
+to get debugger inspector functionality in Ruby 2.x, use:
+
+gem install debug_inspector
+gem install binding_of_caller
+
+Also see here for inspirational example code for getting a pretty backtrace:
+https://github.com/ko1/pretty_backtrace/blob/master/lib/pretty_backtrace.rb
+
+
+---
+2015-07-11
+
+http://eli.thegreenplace.net/2006/04/18/understanding-ruby-blocks-procs-and-methods/
+
diff --git a/v4-cokapi/backends/ruby/pg_logger.rb b/v4-cokapi/backends/ruby/pg_logger.rb
new file mode 100644
index 000000000..f1c2d3c5e
--- /dev/null
+++ b/v4-cokapi/backends/ruby/pg_logger.rb
@@ -0,0 +1,632 @@
+# Ruby backend for Online "Python" Tutor
+# created on 2015-06-29 by Philip Guo
+# first deployed on 2015-07-15
+#
+# WARNING: this script only works on a *hacked version* of Ruby 2.X since
+# we use the TracePoint API (standard in 2.X) and custom fields such as
+# binding::frame_id (only available in our hacked version).
+# See custom-ruby-interpreter/ for details.
+
+# TODO
+#
+# - support gets() for taking user input using the restart hack mechanism
+#   that we used for Python. user input stored in $_
+#
+# Limitations/quirks:
+#
+# - code keeps executing for a few more lines after an exception;
+#   dunno if that's standard Ruby behavior or not
+#
+# - if you write, say, "require 'date'", it will pull in classes from
+#   the date module into globals, which might make the display HUGE
+#   with way too many attributes. this is a general problem that
+#   manifests in other languages as well.
+
+
+require 'json'
+require 'optparse'
+require 'set'
+require 'stringio'
+
+require 'debug_inspector' # gem install debug_inspector, use on Ruby 2.X
+
+trace_output_fn = 'stdout' # default
+script_name = nil
+cod = nil
+
+OptionParser.new do |opts|
+  opts.banner = "Usage: ./ruby pg_logger.rb [options]"
+
+  opts.on("-t", "--tracefile", "Create a test-trace.js trace file") do |t|
+    trace_output_fn = "../../../v3/test-trace.js" if t
+  end
+
+  opts.on("-f", "--file FILE", "Execute a .rb file") do |s|
+    script_name = s
+  end
+
+  opts.on("-c", "--code CODE", String, "Execute Ruby code from string") do |c|
+    cod = c
+  end
+
+end.parse!
+
+# -c gets precedence over -f
+if !cod
+  cod = File.open(script_name).read
+end
+
+cur_trace = []
+res = {'code' => cod.dup, # make a snapshot of the code NOW before it's modified
+       'trace' => cur_trace}
+
+# canonicalize to pretty-print
+cur_frame_id = 1
+ordered_frame_ids = {}
+
+stdout_buffer = StringIO.new
+
+n_steps = 0
+MAX_STEPS = 300
+
+n_lines_added = nil
+
+class MaxStepsException < RuntimeError
+end
+
+PRIMITIVES = [Fixnum, Float, String, TrueClass, FalseClass, NilClass]
+
+# ported from ../../../v3/pg_encoder.py
+class ObjectEncoder
+  def initialize
+    # Key: canonicalized small ID
+    # Value: encoded (compound) heap object
+    @encoded_heap_objects = {}
+
+    @id_to_small_IDs = {}
+    @cur_small_ID = 1
+  end
+
+  def get_heap
+    @encoded_heap_objects
+  end
+
+  def reset_heap
+    # VERY IMPORTANT to reassign to a NEW empty hash rather than just
+    # clearing the existing hash, since get_heap() could have been
+    # called earlier to return a reference to a previous heap state
+    @encoded_heap_objects = {}
+  end
+
+  # return either a primitive object or an object reference;
+  # and as a side effect, update encoded_heap_objects
+  def encode(dat)
+    if PRIMITIVES.include? dat.class
+      if dat.class == Float
+        if dat == Float::INFINITY
+          return ['SPECIAL_FLOAT', 'Infinity']
+        elsif dat == (-1 * Float::INFINITY)
+          return ['SPECIAL_FLOAT', '-Infinity']
+        elsif dat.nan?
+          return ['SPECIAL_FLOAT', 'NaN']
+        elsif dat == dat.to_i
+          # (this way, 3.0 prints as '3.0' and not as 3, which looks like an int)
+          return ['SPECIAL_FLOAT', '%.1f' % dat]
+        end
+      elsif dat.class == String
+        # annoying! strings are mutable, so need to make
+        # a duplicate to snapshot the current value!
+        return dat.dup
+      end
+
+      return dat
+    else
+      my_id = dat.object_id
+
+      my_small_id = @id_to_small_IDs[my_id]
+      if !my_small_id
+        my_small_id = @cur_small_ID
+        @id_to_small_IDs[my_id] = @cur_small_ID
+        @cur_small_ID += 1
+      end
+
+      ret = ['REF', my_small_id]
+
+      # punt early if you've already encoded this object
+      return ret if @encoded_heap_objects.include? my_small_id
+
+      new_obj = []
+      @encoded_heap_objects[my_small_id] = new_obj
+
+      # otherwise encode it in the heap and return ret
+      if dat.class == Array
+        new_obj << 'LIST'
+        dat.each { |e| new_obj << encode(e) }
+      elsif dat.class == Hash
+        new_obj << 'DICT'
+        dat.each { |k, v| new_obj << [encode(k), encode(v)] }
+      elsif dat.class == Set
+        new_obj << 'SET'
+        dat.each { |e| new_obj << encode(e) }
+      elsif dat.class == Range || dat.class == Symbol || dat.class == Regexp
+        # display these simple types as-is without any frills
+        new_obj << dat.class.to_s
+        new_obj << dat.inspect
+      elsif dat.class == Method || dat.class == UnboundMethod
+        # just use 'FUNCTION' for simplicity, even though it masks some
+        # subtleties of methods, unbound methods, etc.
+        new_obj << 'FUNCTION'
+        new_obj << dat.name
+        new_obj << '' # parent frame ID
+      elsif dat.class == Proc
+        new_obj << dat.class.to_s
+        if dat.lambda?
+          new_obj << ("Lambda on line %d" % dat.source_location[1])
+        else
+          new_obj << ("Proc on line %d" % dat.source_location[1])
+        end
+      elsif dat.class == Class
+        new_obj << 'CLASS'
+        new_obj << dat.to_s
+        sups = []
+        sups << dat.superclass if dat.superclass != Object
+        new_obj << sups
+
+        encoded_constants = []
+        encoded_class_methods = []
+        encoded_instance_methods = []
+        encoded_class_variables = []
+        encoded_instance_variables = []
+
+        dat.constants.each do |e|
+          encoded_constants << [e.to_s, encode(dat.const_get(e))]
+        end
+
+        # TODO: what about if you override a class method that your
+        # superclass defines? will we run into problems then?
+        my_class_methods = dat.methods - dat.superclass.methods
+        my_class_methods.each do |e|
+          encoded_class_methods << ['self.' + e.to_s, encode(dat.method(e))]
+        end
+
+        # apparently there are no protected class methods
+        my_private_class_methods = dat.private_methods - dat.superclass.private_methods
+        my_private_class_methods.each do |e|
+          encoded_class_methods << ['self.' + e.to_s + ' [private]', encode(dat.method(e))]
+        end
+
+        # separately handle public, protected, and private
+        dat.public_instance_methods.each do |e|
+          m = dat.instance_method(e)
+          # only add if this method belongs to YOU and not to a superclass
+          if m.owner == dat
+            # use instance_method to get the unbound method
+            # http://ruby-doc.org/core-2.2.0/UnboundMethod.html
+            encoded_instance_methods << [e.to_s, encode(m)]
+          end
+        end
+        dat.protected_instance_methods.each do |e|
+          m = dat.instance_method(e)
+          if m.owner == dat
+            encoded_instance_methods << [e.to_s + ' [protected]', encode(m)]
+          end
+        end
+        dat.private_instance_methods.each do |e|
+          m = dat.instance_method(e)
+          if m.owner == dat
+            encoded_instance_methods << [e.to_s + ' [private]', encode(m)]
+          end
+        end
+
+        dat.class_variables.each do |e|
+          encoded_class_variables << [e.to_s, encode(dat.class_variable_get(e))]
+        end
+
+        dat.instance_variables.each do |e|
+          encoded_instance_variables << [e.to_s, encode(dat.instance_variable_get(e))]
+        end
+
+        new_obj.concat(encoded_constants)
+        new_obj.concat(encoded_class_methods)
+        new_obj.concat(encoded_instance_methods)
+        new_obj.concat(encoded_class_variables)
+        new_obj.concat(encoded_instance_variables)
+      elsif dat.class == Module
+        new_obj << 'INSTANCE'
+        new_obj << dat.class.to_s
+
+        encoded_constants = []
+        encoded_instance_methods = []
+        encoded_class_variables = []
+        encoded_instance_variables = []
+
+        dat.constants.each do |e|
+          encoded_constants << [e.to_s, encode(dat.const_get(e))]
+        end
+
+        # TODO: maybe remove duplication from included modules?
+
+        dat.instance_methods.each do |e|
+          # use instance_method to get the unbound method
+          # http://ruby-doc.org/core-2.2.0/UnboundMethod.html
+          encoded_instance_methods << [e.to_s, encode(dat.instance_method(e))]
+        end
+
+        dat.class_variables.each do |e|
+          encoded_class_variables << [e.to_s, encode(dat.class_variable_get(e))]
+        end
+
+        dat.instance_variables.each do |e|
+          encoded_instance_variables << [e.to_s, encode(dat.instance_variable_get(e))]
+        end
+
+        new_obj.concat(encoded_constants)
+        new_obj.concat(encoded_instance_methods)
+        new_obj.concat(encoded_class_variables)
+        new_obj.concat(encoded_instance_variables)
+      else
+        # concise case: instance that doesn't use the default Kernel to_s
+        # (i.e., either it or its superclass defined a custom to_s):
+        if dat.method(:to_s).owner != Kernel
+          new_obj << 'INSTANCE_PPRINT'
+          new_obj << dat.class.to_s
+          new_obj << dat.to_s
+        else
+          new_obj << 'INSTANCE'
+          new_obj << dat.class.to_s
+
+          # catch-all case: in Ruby, everything is an object
+          my_inst_vars = dat.instance_variables
+
+          encoded_instance_variables = []
+
+          my_inst_vars.each do |e|
+            encoded_instance_variables << [e.to_s, encode(dat.instance_variable_get(e))]
+          end
+
+          new_obj.concat(encoded_instance_variables)
+
+          # for brevity, put methods in the class, not in instances
+        end
+      end
+
+      return ret
+    end
+  end
+end
+
+# do NOT rename this anything other than pg_encoder since we refer to it
+# later by name
+pg_encoder = ObjectEncoder.new
+
+
+# end all of my own definitions here so that I can set the following vars ...
+
+# collect the sets of these variables RIGHT BEFORE the user's code runs
+# so that we can do a set difference later to see what the user defined
+base_globals_set = global_variables
+base_constants_set = Module.constants
+base_inst_vars_set = self.instance_variables # toplevel instance variables are set on 'self'
+base_class_vars_set = Object.class_variables # toplevel class variables are set on 'Object'
+base_methods_set  = Object.private_methods # toplevel defined methods are set on 'Object'
+
+
+# do NOT rename this anything other than pg_tracer since we refer to it
+# later by name
+pg_tracer = TracePoint.new(:line,:class,:end,:call,:return,:raise,:b_call,:b_return) do |tp|
+  next if tp.path != '(eval)' # 'next' is a 'return' from a block
+
+  raise MaxStepsException if n_steps > MAX_STEPS
+
+  # TODO: look into tp.defined_class and tp.method_id attrs
+
+  pg_encoder.reset_heap() # VERY VERY VERY IMPORTANT, or else we won't properly
+                          # capture heap object mutations in the trace!
+
+  retval = nil
+  if tp.event == :return || tp.event == :b_return
+    retval = pg_encoder.encode(tp.return_value)
+  end
+
+  evt_type = case tp.event
+             when :line then "step_line"
+             when :call, :b_call, :class then "call"
+             when :return, :b_return, :end then "return"
+             when :raise then "exception"
+             end
+
+  entry = {}
+
+  entry['func_name'] = '<toplevel>' #tp.method_id
+  entry['line'] = tp.lineno
+  entry['event'] = evt_type
+
+  # make a copy to take a snapshot at this point in time
+  entry['stdout'] = stdout_buffer.string.dup
+
+  stack = []
+  entry['stack_to_render'] = stack
+  entry['heap'] = pg_encoder.get_heap
+
+  # globals
+  globals = {}
+  entry['globals'] = globals
+
+  true_globals = (global_variables - base_globals_set) # set difference
+  entry['ordered_globals'] = true_globals.map { |e| e.to_s }
+
+  true_globals.each.with_index do |varname, i|
+    val = eval(varname.to_s) # TODO: is there a better way? this seems hacky!
+    globals[varname.to_s] = pg_encoder.encode(val)
+  end
+
+  # toplevel constants (stuff them in globals)
+  toplevel_constants = (Module.constants - base_constants_set) # set difference
+  entry['ordered_globals'].concat(toplevel_constants.map { |e| e.to_s })
+  toplevel_constants.each do |varname|
+    val = Module.const_get(varname)
+    globals[varname.to_s] = pg_encoder.encode(val)
+  end
+
+  # toplevel methods, class vars, and instance vars
+  # just stuff them in globals, even though technically they're not
+  # really global variables in Ruby; they're part of the weird 'self'
+  # instance and also 'Object' itself ... quirky
+  toplevel_methods = Object.private_methods - base_methods_set
+  toplevel_class_vars = Object.class_variables - base_class_vars_set
+  toplevel_inst_vars = self.instance_variables - base_inst_vars_set
+
+  entry['ordered_globals'].concat(toplevel_methods.map { |e| e.to_s })
+  entry['ordered_globals'].concat(toplevel_class_vars.map { |e| e.to_s })
+  entry['ordered_globals'].concat(toplevel_inst_vars.map { |e| e.to_s })
+
+
+  toplevel_methods.each do |varname|
+    val = Object.method(varname)
+    globals[varname.to_s] = pg_encoder.encode(val)
+  end
+
+  toplevel_class_vars.each do |varname|
+    val = Object.class_variable_get(varname)
+    globals[varname.to_s] = pg_encoder.encode(val)
+  end
+
+  toplevel_inst_vars.each do |varname|
+    val = self.instance_variable_get(varname)
+    globals[varname.to_s] = pg_encoder.encode(val)
+  end
+
+  if tp.event == :raise
+    entry['exception_msg'] = tp.raised_exception
+  end
+
+  # adapted from https://github.com/ko1/pretty_backtrace/blob/master/lib/pretty_backtrace.rb
+  def self.iseq_local_variables iseq
+    _,_,_,_,arg_info,name,path,a_path,_,type,lvs, * = iseq.to_a
+    lvs
+  end
+
+  # adapted from https://github.com/ko1/pretty_backtrace/blob/master/lib/pretty_backtrace.rb
+  RubyVM::DebugInspector.open do |dc|
+    locs = dc.backtrace_locations
+
+    locs.each.with_index do |loc, i|
+      # ignore first two boilerplate frames
+      next if i < 2
+      # and totally punt as soon as you hit the 'eval' frame
+      break if /in `eval'/ =~ loc.to_s
+
+      stack_entry = {}
+      stack_entry['is_highlighted'] = false # set the last entry to true later
+
+      is_main = false
+
+      iseq = dc.frame_iseq(i)
+      if !iseq
+        # if you're, say, in a built-in operator like :/ (division)
+        # totally punt since we can't get any useful info
+        next
+      else
+        b = dc.frame_binding(i)
+
+        # frame_id field exists only in my hacked Ruby interpreter!
+        canonical_fid = ordered_frame_ids[b.frame_id]
+        if !canonical_fid
+          canonical_fid = cur_frame_id
+          ordered_frame_ids[b.frame_id] = cur_frame_id
+          cur_frame_id += 1
+        end
+
+        # special-case handling for the toplevel '<main>' frame
+        # (NB: don't do this for now)
+        #is_main = true if loc.label == '<main>'
+
+        stack_entry['func_name'] = '%s:%d' % [loc.label, loc.lineno]
+
+
+        stack_entry['frame_id'] = canonical_fid
+        stack_entry['unique_hash'] = stack_entry['func_name'] + '_f' + stack_entry['frame_id'].to_s
+
+        # unsupported features
+        stack_entry['is_parent'] = false
+        stack_entry['is_zombie'] = false
+        stack_entry['parent_frame_id_list'] = []
+
+        # these include only your own frame's locals
+        lvs = iseq_local_variables(iseq)
+        # filter out weird Fixnum local variable names, which seem to be
+        # created when iterating over Range values ... weird?!?
+        lvs = lvs.select{ |e| !e.is_a? Fixnum}
+        lvs_val = lvs.inject({}){|r, lv|
+          begin
+            begin
+              v = b.local_variable_get(lv)
+              r[lv] = pg_encoder.encode(v)
+            rescue
+              # iterating over range values will make 'lv' into
+              # potentially literal values such as integers, so they
+              # don't make sense as keys in local_variable_get
+              #
+              # ignore
+            end
+          rescue NameError
+            # ignore
+          end
+          r # very important!
+        }
+
+        stack_entry['ordered_varnames'] = lvs.map { |e| e.to_s }
+        stack_entry['encoded_locals'] = lvs_val
+
+        # handle closures ...
+        # these also include variables captured in lexical parents' frames!!!
+        all_local_vars = b.local_variables
+
+        # OK this is RIDICULOUSLY RIDICULOUSLY hacky. if this frame is
+        # defined at the toplevel, then its parent frame will include
+        # pg_tracer and pg_encoder, which is defined in THIS VERY FILE!!!
+        # if that's the case, then totally punt since we don't want to
+        # print out spurious data that's not even in the user's program.
+        # ughhh this is sooooooo hacky!
+        if (!all_local_vars.include?(:pg_tracer) &&
+            !all_local_vars.include?(:pg_encoder))
+          parent_frame_local_vars = (all_local_vars - lvs)
+          parent_lvs_val = parent_frame_local_vars.inject(lvs_val){|r, lv|
+            begin
+              varname = 'parent:' + lv.to_s
+              v = b.local_variable_get(lv)
+              r[varname] = pg_encoder.encode(v)
+              stack_entry['ordered_varnames'] << varname
+            rescue NameError
+              # ignore
+            end
+            r # very important!
+          }
+        end
+
+        # get the value of 'self' as seen by this frame
+        my_self = b.eval('self')
+        if my_self != self # ignore default global 'self' for brevity
+          stack_entry['ordered_varnames'].insert(0, 'self') # insert at front
+          stack_entry['encoded_locals']['self'] = pg_encoder.encode(my_self)
+        end
+
+        # just fold everything into globals rather than creating a
+        # separate (redundant) frame for '<main>'
+        # (NB: don't do this for now ... just relabel "Global frames" as
+        # 'Global Object' or something)
+        if is_main
+          entry['ordered_globals'].concat(stack_entry['ordered_varnames'])
+          entry['globals'].update(stack_entry['encoded_locals'])
+        end
+      end
+
+      # no separate frame for main since its local variables were folded
+      # into globals
+      if !is_main
+        stack << stack_entry
+      end
+
+    end
+  end
+
+  # massage the topmost stack entry
+  if stack.length > 0
+    stack[0]['is_highlighted'] = true
+    if tp.event == :return || tp.event == :b_return
+      stack[0]['ordered_varnames'] << '__return__'
+      stack[0]['encoded_locals']['__return__'] = retval
+    end
+  end
+
+  # now REVERSE the stack so that it grows downward
+  stack.reverse!
+
+  n_steps += 1
+
+  cur_trace << entry
+end
+
+
+begin
+  # we are redirecting stdout so we need to print all warnings to stderr!
+  pg_tracer.enable
+  $stdout = stdout_buffer
+
+  # super-hack: add an extra 'nil' line to execute at the end so that the
+  # tracer can easily pick up on the final executed line in '(eval)'
+  # - this isn't a 'real' line number in the user's code since we've
+  #   inserted an extra line
+  if cod[-1] == "\n"
+    cod << "nil"
+    n_lines_added = 1
+  else
+    cod << "\nnil"
+    n_lines_added = 1 # pretty sure this is 1 and not 2
+  end
+
+  eval(cod) # the filename of the user's code is '(eval)'
+  pg_tracer.disable
+rescue SyntaxError
+  $stdout = STDOUT
+  exc_object = $!
+
+  raw_exc_message = exc_object.message
+  # parse out the line number and message from raw_exc_message. e.g.,:
+  # "(eval):11: syntax error, unexpected end-of-input, expecting keyword_end"
+  # - we want to extract out the line number of 11 and the message of
+  #   "syntax error, unexpected end-of-input, expecting keyword_end"
+  /[:](\d+)[:] (.*)$/ =~ raw_exc_message
+  lineno = $1.to_i
+  exc_message = $2
+
+  # From: https://github.com/pgbovine/OnlinePythonTutor/blob/master/v3/docs/opt-trace-format.md
+  # "If the trace has exactly 1 entry and it's an uncaught_exception, then
+  # the OPT frontend doesn't switch to the visualization at all ...
+  # instead it displays a "syntax error"-like thingy in the code editor.
+  # It will highlight the faulting line, indicated by the line field and
+  # display exception_msg there. So if you want to indicate a syntax error,
+  # then create a trace with exactly ONE entry that's an uncaught_exception.
+  singleton_entry = {}
+  # mutate cur_trace in place rather than reassigning, since res already includes it
+  cur_trace.clear
+  cur_trace << singleton_entry
+  singleton_entry['event'] = 'uncaught_exception'
+  singleton_entry['line'] = lineno
+  singleton_entry['exception_msg'] = exc_message
+rescue MaxStepsException
+  $stdout = STDOUT
+
+  # take the final trace entry & make it into a instruction_limit_reached event
+  if cur_trace.length > 0
+    cur_trace[-1]['event'] = 'instruction_limit_reached'
+    cur_trace[-1]['exception_msg'] = "(stopped after %d steps to prevent possible infinite loop)" % MAX_STEPS
+  end
+rescue
+  $stdout = STDOUT
+  # ignore since we've already handled a :raise event in the trace by now
+  STDERR.puts $! # but still print the error to ease debugging
+  STDERR.puts $!.backtrace
+ensure
+  $stdout = STDOUT
+
+  # super hack -- to account for the fact that we added an extra 'nil'
+  # instruction at the very end of the user's code, we will set the
+  # final instruction's line number to the last line of the file
+  # (only do this if the trace isn't a single element, which likely
+  # indicates some sort of uncaught_exception)
+  if cur_trace.length > 1 && n_lines_added
+    cur_trace[-1]['line'] -= n_lines_added
+  end
+
+  # postprocessing into a trace
+  trace_json = JSON.pretty_generate(res)
+  if trace_output_fn == 'stdout'
+    STDOUT.write(trace_json)
+  else
+    File.open(trace_output_fn, 'w') do |f|
+      f.write('var trace = ' + trace_json)
+    end
+    puts "Trace written to " + trace_output_fn
+  end
+end
diff --git a/v4-cokapi/backends/ruby/tests/blocks-basic.golden b/v4-cokapi/backends/ruby/tests/blocks-basic.golden
new file mode 100644
index 000000000..c71158e70
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-basic.golden
@@ -0,0 +1,1550 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\ndef gimme\n  if block_given?\n    yield\n  else\n    print \"Oops, no block.\"\n  end\n  puts \" You're welcome.\"\nend\n\ngimme { print \"Thank you.\" }\n\ngimme do\n  localX = \"Thank you again.\"\n  print localX\nend\n\ngimme # no block\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:3",
+          "frame_id": 2,
+          "unique_hash": "gimme:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:4",
+          "frame_id": 2,
+          "unique_hash": "gimme:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "Thank you.",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "Thank you.",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:9",
+          "frame_id": 2,
+          "unique_hash": "gimme:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:10",
+          "frame_id": 2,
+          "unique_hash": "gimme:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:3",
+          "frame_id": 2,
+          "unique_hash": "gimme:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:4",
+          "frame_id": 2,
+          "unique_hash": "gimme:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "call",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:14",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": null
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:15",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:15_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": null
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:16",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:16_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "Thank you again."
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "return",
+      "stdout": "Thank you. You're welcome.\nThank you again.",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:17",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:17_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "localX": "Thank you again.",
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\nThank you again.",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:9",
+          "frame_id": 2,
+          "unique_hash": "gimme:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:10",
+          "frame_id": 2,
+          "unique_hash": "gimme:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          20
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:3",
+          "frame_id": 2,
+          "unique_hash": "gimme:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "21": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          21
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:4",
+          "frame_id": 2,
+          "unique_hash": "gimme:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "22": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          22
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "23": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          23
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\nOops, no block.",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:9",
+          "frame_id": 2,
+          "unique_hash": "gimme:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "24": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          24
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\nOops, no block. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:10",
+          "frame_id": 2,
+          "unique_hash": "gimme:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "25": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          25
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Thank you. You're welcome.\nThank you again. You're welcome.\nOops, no block. You're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "26": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          26
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/blocks-basic.rb b/v4-cokapi/backends/ruby/tests/blocks-basic.rb
new file mode 100644
index 000000000..ee44cc136
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-basic.rb
@@ -0,0 +1,19 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+def gimme
+  if block_given?
+    yield
+  else
+    print "Oops, no block."
+  end
+  puts " You're welcome."
+end
+
+gimme { print "Thank you." }
+
+gimme do
+  localX = "Thank you again."
+  print localX
+end
+
+gimme # no block
diff --git a/v4-cokapi/backends/ruby/tests/blocks-iterate.golden b/v4-cokapi/backends/ruby/tests/blocks-iterate.golden
new file mode 100644
index 000000000..7fe166d22
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-iterate.golden
@@ -0,0 +1,10424 @@
+{
+  "code": "# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/\n\nclass Array\n  def iterate!\n    self.each_with_index { |n, i|\n      self[i] = yield(n)\n    }\n  end\n\n  # & turns cod from a block to a proc, which has a call() method\n  def iterate_proc!(&cod)\n    self.each_with_index { |n, i|\n      self[i] = cod.call(n)\n    }\n  end\nend\n\narray = [1, 2, 3, 4]\n\narray.iterate! { |n| n ** 2 }\nputs array.inspect\n\narray.iterate_proc! { |n| n + 100 }\nputs array.inspect\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Array>:3",
+          "frame_id": 2,
+          "unique_hash": "<class:Array>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Array",
+          [
+
+          ],
+          [
+            "self.[]",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "self.try_convert",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "to_a",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "to_h",
+            [
+              "REF",
+              7
+            ]
+          ],
+          [
+            "to_ary",
+            [
+              "REF",
+              8
+            ]
+          ],
+          [
+            "frozen?",
+            [
+              "REF",
+              9
+            ]
+          ],
+          [
+            "==",
+            [
+              "REF",
+              10
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              11
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              12
+            ]
+          ],
+          [
+            "[]",
+            [
+              "REF",
+              13
+            ]
+          ],
+          [
+            "[]=",
+            [
+              "REF",
+              14
+            ]
+          ],
+          [
+            "at",
+            [
+              "REF",
+              15
+            ]
+          ],
+          [
+            "fetch",
+            [
+              "REF",
+              16
+            ]
+          ],
+          [
+            "first",
+            [
+              "REF",
+              17
+            ]
+          ],
+          [
+            "last",
+            [
+              "REF",
+              18
+            ]
+          ],
+          [
+            "concat",
+            [
+              "REF",
+              19
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              20
+            ]
+          ],
+          [
+            "push",
+            [
+              "REF",
+              21
+            ]
+          ],
+          [
+            "pop",
+            [
+              "REF",
+              22
+            ]
+          ],
+          [
+            "shift",
+            [
+              "REF",
+              23
+            ]
+          ],
+          [
+            "unshift",
+            [
+              "REF",
+              24
+            ]
+          ],
+          [
+            "insert",
+            [
+              "REF",
+              25
+            ]
+          ],
+          [
+            "each",
+            [
+              "REF",
+              26
+            ]
+          ],
+          [
+            "each_index",
+            [
+              "REF",
+              27
+            ]
+          ],
+          [
+            "reverse_each",
+            [
+              "REF",
+              28
+            ]
+          ],
+          [
+            "length",
+            [
+              "REF",
+              29
+            ]
+          ],
+          [
+            "size",
+            [
+              "REF",
+              30
+            ]
+          ],
+          [
+            "empty?",
+            [
+              "REF",
+              31
+            ]
+          ],
+          [
+            "find_index",
+            [
+              "REF",
+              32
+            ]
+          ],
+          [
+            "index",
+            [
+              "REF",
+              33
+            ]
+          ],
+          [
+            "rindex",
+            [
+              "REF",
+              34
+            ]
+          ],
+          [
+            "join",
+            [
+              "REF",
+              35
+            ]
+          ],
+          [
+            "reverse",
+            [
+              "REF",
+              36
+            ]
+          ],
+          [
+            "reverse!",
+            [
+              "REF",
+              37
+            ]
+          ],
+          [
+            "rotate",
+            [
+              "REF",
+              38
+            ]
+          ],
+          [
+            "rotate!",
+            [
+              "REF",
+              39
+            ]
+          ],
+          [
+            "sort",
+            [
+              "REF",
+              40
+            ]
+          ],
+          [
+            "sort!",
+            [
+              "REF",
+              41
+            ]
+          ],
+          [
+            "sort_by!",
+            [
+              "REF",
+              42
+            ]
+          ],
+          [
+            "collect",
+            [
+              "REF",
+              43
+            ]
+          ],
+          [
+            "collect!",
+            [
+              "REF",
+              44
+            ]
+          ],
+          [
+            "map",
+            [
+              "REF",
+              45
+            ]
+          ],
+          [
+            "map!",
+            [
+              "REF",
+              46
+            ]
+          ],
+          [
+            "select",
+            [
+              "REF",
+              47
+            ]
+          ],
+          [
+            "select!",
+            [
+              "REF",
+              48
+            ]
+          ],
+          [
+            "keep_if",
+            [
+              "REF",
+              49
+            ]
+          ],
+          [
+            "values_at",
+            [
+              "REF",
+              50
+            ]
+          ],
+          [
+            "delete",
+            [
+              "REF",
+              51
+            ]
+          ],
+          [
+            "delete_at",
+            [
+              "REF",
+              52
+            ]
+          ],
+          [
+            "delete_if",
+            [
+              "REF",
+              53
+            ]
+          ],
+          [
+            "reject",
+            [
+              "REF",
+              54
+            ]
+          ],
+          [
+            "reject!",
+            [
+              "REF",
+              55
+            ]
+          ],
+          [
+            "zip",
+            [
+              "REF",
+              56
+            ]
+          ],
+          [
+            "transpose",
+            [
+              "REF",
+              57
+            ]
+          ],
+          [
+            "replace",
+            [
+              "REF",
+              58
+            ]
+          ],
+          [
+            "clear",
+            [
+              "REF",
+              59
+            ]
+          ],
+          [
+            "fill",
+            [
+              "REF",
+              60
+            ]
+          ],
+          [
+            "include?",
+            [
+              "REF",
+              61
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              62
+            ]
+          ],
+          [
+            "slice",
+            [
+              "REF",
+              63
+            ]
+          ],
+          [
+            "slice!",
+            [
+              "REF",
+              64
+            ]
+          ],
+          [
+            "assoc",
+            [
+              "REF",
+              65
+            ]
+          ],
+          [
+            "rassoc",
+            [
+              "REF",
+              66
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              67
+            ]
+          ],
+          [
+            "*",
+            [
+              "REF",
+              68
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              69
+            ]
+          ],
+          [
+            "&",
+            [
+              "REF",
+              70
+            ]
+          ],
+          [
+            "|",
+            [
+              "REF",
+              71
+            ]
+          ],
+          [
+            "uniq",
+            [
+              "REF",
+              72
+            ]
+          ],
+          [
+            "uniq!",
+            [
+              "REF",
+              73
+            ]
+          ],
+          [
+            "compact",
+            [
+              "REF",
+              74
+            ]
+          ],
+          [
+            "compact!",
+            [
+              "REF",
+              75
+            ]
+          ],
+          [
+            "flatten",
+            [
+              "REF",
+              76
+            ]
+          ],
+          [
+            "flatten!",
+            [
+              "REF",
+              77
+            ]
+          ],
+          [
+            "count",
+            [
+              "REF",
+              78
+            ]
+          ],
+          [
+            "shuffle!",
+            [
+              "REF",
+              79
+            ]
+          ],
+          [
+            "shuffle",
+            [
+              "REF",
+              80
+            ]
+          ],
+          [
+            "sample",
+            [
+              "REF",
+              81
+            ]
+          ],
+          [
+            "cycle",
+            [
+              "REF",
+              82
+            ]
+          ],
+          [
+            "permutation",
+            [
+              "REF",
+              83
+            ]
+          ],
+          [
+            "combination",
+            [
+              "REF",
+              84
+            ]
+          ],
+          [
+            "repeated_permutation",
+            [
+              "REF",
+              85
+            ]
+          ],
+          [
+            "repeated_combination",
+            [
+              "REF",
+              86
+            ]
+          ],
+          [
+            "product",
+            [
+              "REF",
+              87
+            ]
+          ],
+          [
+            "take",
+            [
+              "REF",
+              88
+            ]
+          ],
+          [
+            "take_while",
+            [
+              "REF",
+              89
+            ]
+          ],
+          [
+            "drop",
+            [
+              "REF",
+              90
+            ]
+          ],
+          [
+            "drop_while",
+            [
+              "REF",
+              91
+            ]
+          ],
+          [
+            "bsearch",
+            [
+              "REF",
+              92
+            ]
+          ],
+          [
+            "any?",
+            [
+              "REF",
+              93
+            ]
+          ],
+          [
+            "pack",
+            [
+              "REF",
+              94
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              95
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              96
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "3": [
+          "FUNCTION",
+          "try_convert",
+          ""
+        ],
+        "4": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "5": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "6": [
+          "FUNCTION",
+          "to_a",
+          ""
+        ],
+        "7": [
+          "FUNCTION",
+          "to_h",
+          ""
+        ],
+        "8": [
+          "FUNCTION",
+          "to_ary",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "frozen?",
+          ""
+        ],
+        "10": [
+          "FUNCTION",
+          "==",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "12": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "14": [
+          "FUNCTION",
+          "[]=",
+          ""
+        ],
+        "15": [
+          "FUNCTION",
+          "at",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "fetch",
+          ""
+        ],
+        "17": [
+          "FUNCTION",
+          "first",
+          ""
+        ],
+        "18": [
+          "FUNCTION",
+          "last",
+          ""
+        ],
+        "19": [
+          "FUNCTION",
+          "concat",
+          ""
+        ],
+        "20": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "push",
+          ""
+        ],
+        "22": [
+          "FUNCTION",
+          "pop",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "shift",
+          ""
+        ],
+        "24": [
+          "FUNCTION",
+          "unshift",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "insert",
+          ""
+        ],
+        "26": [
+          "FUNCTION",
+          "each",
+          ""
+        ],
+        "27": [
+          "FUNCTION",
+          "each_index",
+          ""
+        ],
+        "28": [
+          "FUNCTION",
+          "reverse_each",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "length",
+          ""
+        ],
+        "30": [
+          "FUNCTION",
+          "size",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "empty?",
+          ""
+        ],
+        "32": [
+          "FUNCTION",
+          "find_index",
+          ""
+        ],
+        "33": [
+          "FUNCTION",
+          "index",
+          ""
+        ],
+        "34": [
+          "FUNCTION",
+          "rindex",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "join",
+          ""
+        ],
+        "36": [
+          "FUNCTION",
+          "reverse",
+          ""
+        ],
+        "37": [
+          "FUNCTION",
+          "reverse!",
+          ""
+        ],
+        "38": [
+          "FUNCTION",
+          "rotate",
+          ""
+        ],
+        "39": [
+          "FUNCTION",
+          "rotate!",
+          ""
+        ],
+        "40": [
+          "FUNCTION",
+          "sort",
+          ""
+        ],
+        "41": [
+          "FUNCTION",
+          "sort!",
+          ""
+        ],
+        "42": [
+          "FUNCTION",
+          "sort_by!",
+          ""
+        ],
+        "43": [
+          "FUNCTION",
+          "collect",
+          ""
+        ],
+        "44": [
+          "FUNCTION",
+          "collect!",
+          ""
+        ],
+        "45": [
+          "FUNCTION",
+          "map",
+          ""
+        ],
+        "46": [
+          "FUNCTION",
+          "map!",
+          ""
+        ],
+        "47": [
+          "FUNCTION",
+          "select",
+          ""
+        ],
+        "48": [
+          "FUNCTION",
+          "select!",
+          ""
+        ],
+        "49": [
+          "FUNCTION",
+          "keep_if",
+          ""
+        ],
+        "50": [
+          "FUNCTION",
+          "values_at",
+          ""
+        ],
+        "51": [
+          "FUNCTION",
+          "delete",
+          ""
+        ],
+        "52": [
+          "FUNCTION",
+          "delete_at",
+          ""
+        ],
+        "53": [
+          "FUNCTION",
+          "delete_if",
+          ""
+        ],
+        "54": [
+          "FUNCTION",
+          "reject",
+          ""
+        ],
+        "55": [
+          "FUNCTION",
+          "reject!",
+          ""
+        ],
+        "56": [
+          "FUNCTION",
+          "zip",
+          ""
+        ],
+        "57": [
+          "FUNCTION",
+          "transpose",
+          ""
+        ],
+        "58": [
+          "FUNCTION",
+          "replace",
+          ""
+        ],
+        "59": [
+          "FUNCTION",
+          "clear",
+          ""
+        ],
+        "60": [
+          "FUNCTION",
+          "fill",
+          ""
+        ],
+        "61": [
+          "FUNCTION",
+          "include?",
+          ""
+        ],
+        "62": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "63": [
+          "FUNCTION",
+          "slice",
+          ""
+        ],
+        "64": [
+          "FUNCTION",
+          "slice!",
+          ""
+        ],
+        "65": [
+          "FUNCTION",
+          "assoc",
+          ""
+        ],
+        "66": [
+          "FUNCTION",
+          "rassoc",
+          ""
+        ],
+        "67": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "68": [
+          "FUNCTION",
+          "*",
+          ""
+        ],
+        "69": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "70": [
+          "FUNCTION",
+          "&",
+          ""
+        ],
+        "71": [
+          "FUNCTION",
+          "|",
+          ""
+        ],
+        "72": [
+          "FUNCTION",
+          "uniq",
+          ""
+        ],
+        "73": [
+          "FUNCTION",
+          "uniq!",
+          ""
+        ],
+        "74": [
+          "FUNCTION",
+          "compact",
+          ""
+        ],
+        "75": [
+          "FUNCTION",
+          "compact!",
+          ""
+        ],
+        "76": [
+          "FUNCTION",
+          "flatten",
+          ""
+        ],
+        "77": [
+          "FUNCTION",
+          "flatten!",
+          ""
+        ],
+        "78": [
+          "FUNCTION",
+          "count",
+          ""
+        ],
+        "79": [
+          "FUNCTION",
+          "shuffle!",
+          ""
+        ],
+        "80": [
+          "FUNCTION",
+          "shuffle",
+          ""
+        ],
+        "81": [
+          "FUNCTION",
+          "sample",
+          ""
+        ],
+        "82": [
+          "FUNCTION",
+          "cycle",
+          ""
+        ],
+        "83": [
+          "FUNCTION",
+          "permutation",
+          ""
+        ],
+        "84": [
+          "FUNCTION",
+          "combination",
+          ""
+        ],
+        "85": [
+          "FUNCTION",
+          "repeated_permutation",
+          ""
+        ],
+        "86": [
+          "FUNCTION",
+          "repeated_combination",
+          ""
+        ],
+        "87": [
+          "FUNCTION",
+          "product",
+          ""
+        ],
+        "88": [
+          "FUNCTION",
+          "take",
+          ""
+        ],
+        "89": [
+          "FUNCTION",
+          "take_while",
+          ""
+        ],
+        "90": [
+          "FUNCTION",
+          "drop",
+          ""
+        ],
+        "91": [
+          "FUNCTION",
+          "drop_while",
+          ""
+        ],
+        "92": [
+          "FUNCTION",
+          "bsearch",
+          ""
+        ],
+        "93": [
+          "FUNCTION",
+          "any?",
+          ""
+        ],
+        "94": [
+          "FUNCTION",
+          "pack",
+          ""
+        ],
+        "95": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "96": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Array>:4",
+          "frame_id": 2,
+          "unique_hash": "<class:Array>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Array",
+          [
+
+          ],
+          [
+            "self.[]",
+            [
+              "REF",
+              97
+            ]
+          ],
+          [
+            "self.try_convert",
+            [
+              "REF",
+              98
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              99
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              100
+            ]
+          ],
+          [
+            "to_a",
+            [
+              "REF",
+              101
+            ]
+          ],
+          [
+            "to_h",
+            [
+              "REF",
+              102
+            ]
+          ],
+          [
+            "to_ary",
+            [
+              "REF",
+              103
+            ]
+          ],
+          [
+            "frozen?",
+            [
+              "REF",
+              104
+            ]
+          ],
+          [
+            "==",
+            [
+              "REF",
+              105
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              106
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              107
+            ]
+          ],
+          [
+            "[]",
+            [
+              "REF",
+              108
+            ]
+          ],
+          [
+            "[]=",
+            [
+              "REF",
+              109
+            ]
+          ],
+          [
+            "at",
+            [
+              "REF",
+              110
+            ]
+          ],
+          [
+            "fetch",
+            [
+              "REF",
+              111
+            ]
+          ],
+          [
+            "first",
+            [
+              "REF",
+              112
+            ]
+          ],
+          [
+            "last",
+            [
+              "REF",
+              113
+            ]
+          ],
+          [
+            "concat",
+            [
+              "REF",
+              114
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              115
+            ]
+          ],
+          [
+            "push",
+            [
+              "REF",
+              116
+            ]
+          ],
+          [
+            "pop",
+            [
+              "REF",
+              117
+            ]
+          ],
+          [
+            "shift",
+            [
+              "REF",
+              118
+            ]
+          ],
+          [
+            "unshift",
+            [
+              "REF",
+              119
+            ]
+          ],
+          [
+            "insert",
+            [
+              "REF",
+              120
+            ]
+          ],
+          [
+            "each",
+            [
+              "REF",
+              121
+            ]
+          ],
+          [
+            "each_index",
+            [
+              "REF",
+              122
+            ]
+          ],
+          [
+            "reverse_each",
+            [
+              "REF",
+              123
+            ]
+          ],
+          [
+            "length",
+            [
+              "REF",
+              124
+            ]
+          ],
+          [
+            "size",
+            [
+              "REF",
+              125
+            ]
+          ],
+          [
+            "empty?",
+            [
+              "REF",
+              126
+            ]
+          ],
+          [
+            "find_index",
+            [
+              "REF",
+              127
+            ]
+          ],
+          [
+            "index",
+            [
+              "REF",
+              128
+            ]
+          ],
+          [
+            "rindex",
+            [
+              "REF",
+              129
+            ]
+          ],
+          [
+            "join",
+            [
+              "REF",
+              130
+            ]
+          ],
+          [
+            "reverse",
+            [
+              "REF",
+              131
+            ]
+          ],
+          [
+            "reverse!",
+            [
+              "REF",
+              132
+            ]
+          ],
+          [
+            "rotate",
+            [
+              "REF",
+              133
+            ]
+          ],
+          [
+            "rotate!",
+            [
+              "REF",
+              134
+            ]
+          ],
+          [
+            "sort",
+            [
+              "REF",
+              135
+            ]
+          ],
+          [
+            "sort!",
+            [
+              "REF",
+              136
+            ]
+          ],
+          [
+            "sort_by!",
+            [
+              "REF",
+              137
+            ]
+          ],
+          [
+            "collect",
+            [
+              "REF",
+              138
+            ]
+          ],
+          [
+            "collect!",
+            [
+              "REF",
+              139
+            ]
+          ],
+          [
+            "map",
+            [
+              "REF",
+              140
+            ]
+          ],
+          [
+            "map!",
+            [
+              "REF",
+              141
+            ]
+          ],
+          [
+            "select",
+            [
+              "REF",
+              142
+            ]
+          ],
+          [
+            "select!",
+            [
+              "REF",
+              143
+            ]
+          ],
+          [
+            "keep_if",
+            [
+              "REF",
+              144
+            ]
+          ],
+          [
+            "values_at",
+            [
+              "REF",
+              145
+            ]
+          ],
+          [
+            "delete",
+            [
+              "REF",
+              146
+            ]
+          ],
+          [
+            "delete_at",
+            [
+              "REF",
+              147
+            ]
+          ],
+          [
+            "delete_if",
+            [
+              "REF",
+              148
+            ]
+          ],
+          [
+            "reject",
+            [
+              "REF",
+              149
+            ]
+          ],
+          [
+            "reject!",
+            [
+              "REF",
+              150
+            ]
+          ],
+          [
+            "zip",
+            [
+              "REF",
+              151
+            ]
+          ],
+          [
+            "transpose",
+            [
+              "REF",
+              152
+            ]
+          ],
+          [
+            "replace",
+            [
+              "REF",
+              153
+            ]
+          ],
+          [
+            "clear",
+            [
+              "REF",
+              154
+            ]
+          ],
+          [
+            "fill",
+            [
+              "REF",
+              155
+            ]
+          ],
+          [
+            "include?",
+            [
+              "REF",
+              156
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              157
+            ]
+          ],
+          [
+            "slice",
+            [
+              "REF",
+              158
+            ]
+          ],
+          [
+            "slice!",
+            [
+              "REF",
+              159
+            ]
+          ],
+          [
+            "assoc",
+            [
+              "REF",
+              160
+            ]
+          ],
+          [
+            "rassoc",
+            [
+              "REF",
+              161
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              162
+            ]
+          ],
+          [
+            "*",
+            [
+              "REF",
+              163
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              164
+            ]
+          ],
+          [
+            "&",
+            [
+              "REF",
+              165
+            ]
+          ],
+          [
+            "|",
+            [
+              "REF",
+              166
+            ]
+          ],
+          [
+            "uniq",
+            [
+              "REF",
+              167
+            ]
+          ],
+          [
+            "uniq!",
+            [
+              "REF",
+              168
+            ]
+          ],
+          [
+            "compact",
+            [
+              "REF",
+              169
+            ]
+          ],
+          [
+            "compact!",
+            [
+              "REF",
+              170
+            ]
+          ],
+          [
+            "flatten",
+            [
+              "REF",
+              171
+            ]
+          ],
+          [
+            "flatten!",
+            [
+              "REF",
+              172
+            ]
+          ],
+          [
+            "count",
+            [
+              "REF",
+              173
+            ]
+          ],
+          [
+            "shuffle!",
+            [
+              "REF",
+              174
+            ]
+          ],
+          [
+            "shuffle",
+            [
+              "REF",
+              175
+            ]
+          ],
+          [
+            "sample",
+            [
+              "REF",
+              176
+            ]
+          ],
+          [
+            "cycle",
+            [
+              "REF",
+              177
+            ]
+          ],
+          [
+            "permutation",
+            [
+              "REF",
+              178
+            ]
+          ],
+          [
+            "combination",
+            [
+              "REF",
+              179
+            ]
+          ],
+          [
+            "repeated_permutation",
+            [
+              "REF",
+              180
+            ]
+          ],
+          [
+            "repeated_combination",
+            [
+              "REF",
+              181
+            ]
+          ],
+          [
+            "product",
+            [
+              "REF",
+              182
+            ]
+          ],
+          [
+            "take",
+            [
+              "REF",
+              183
+            ]
+          ],
+          [
+            "take_while",
+            [
+              "REF",
+              184
+            ]
+          ],
+          [
+            "drop",
+            [
+              "REF",
+              185
+            ]
+          ],
+          [
+            "drop_while",
+            [
+              "REF",
+              186
+            ]
+          ],
+          [
+            "bsearch",
+            [
+              "REF",
+              187
+            ]
+          ],
+          [
+            "any?",
+            [
+              "REF",
+              188
+            ]
+          ],
+          [
+            "pack",
+            [
+              "REF",
+              189
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              190
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              191
+            ]
+          ]
+        ],
+        "97": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "98": [
+          "FUNCTION",
+          "try_convert",
+          ""
+        ],
+        "99": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "100": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "101": [
+          "FUNCTION",
+          "to_a",
+          ""
+        ],
+        "102": [
+          "FUNCTION",
+          "to_h",
+          ""
+        ],
+        "103": [
+          "FUNCTION",
+          "to_ary",
+          ""
+        ],
+        "104": [
+          "FUNCTION",
+          "frozen?",
+          ""
+        ],
+        "105": [
+          "FUNCTION",
+          "==",
+          ""
+        ],
+        "106": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "107": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "108": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "109": [
+          "FUNCTION",
+          "[]=",
+          ""
+        ],
+        "110": [
+          "FUNCTION",
+          "at",
+          ""
+        ],
+        "111": [
+          "FUNCTION",
+          "fetch",
+          ""
+        ],
+        "112": [
+          "FUNCTION",
+          "first",
+          ""
+        ],
+        "113": [
+          "FUNCTION",
+          "last",
+          ""
+        ],
+        "114": [
+          "FUNCTION",
+          "concat",
+          ""
+        ],
+        "115": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "116": [
+          "FUNCTION",
+          "push",
+          ""
+        ],
+        "117": [
+          "FUNCTION",
+          "pop",
+          ""
+        ],
+        "118": [
+          "FUNCTION",
+          "shift",
+          ""
+        ],
+        "119": [
+          "FUNCTION",
+          "unshift",
+          ""
+        ],
+        "120": [
+          "FUNCTION",
+          "insert",
+          ""
+        ],
+        "121": [
+          "FUNCTION",
+          "each",
+          ""
+        ],
+        "122": [
+          "FUNCTION",
+          "each_index",
+          ""
+        ],
+        "123": [
+          "FUNCTION",
+          "reverse_each",
+          ""
+        ],
+        "124": [
+          "FUNCTION",
+          "length",
+          ""
+        ],
+        "125": [
+          "FUNCTION",
+          "size",
+          ""
+        ],
+        "126": [
+          "FUNCTION",
+          "empty?",
+          ""
+        ],
+        "127": [
+          "FUNCTION",
+          "find_index",
+          ""
+        ],
+        "128": [
+          "FUNCTION",
+          "index",
+          ""
+        ],
+        "129": [
+          "FUNCTION",
+          "rindex",
+          ""
+        ],
+        "130": [
+          "FUNCTION",
+          "join",
+          ""
+        ],
+        "131": [
+          "FUNCTION",
+          "reverse",
+          ""
+        ],
+        "132": [
+          "FUNCTION",
+          "reverse!",
+          ""
+        ],
+        "133": [
+          "FUNCTION",
+          "rotate",
+          ""
+        ],
+        "134": [
+          "FUNCTION",
+          "rotate!",
+          ""
+        ],
+        "135": [
+          "FUNCTION",
+          "sort",
+          ""
+        ],
+        "136": [
+          "FUNCTION",
+          "sort!",
+          ""
+        ],
+        "137": [
+          "FUNCTION",
+          "sort_by!",
+          ""
+        ],
+        "138": [
+          "FUNCTION",
+          "collect",
+          ""
+        ],
+        "139": [
+          "FUNCTION",
+          "collect!",
+          ""
+        ],
+        "140": [
+          "FUNCTION",
+          "map",
+          ""
+        ],
+        "141": [
+          "FUNCTION",
+          "map!",
+          ""
+        ],
+        "142": [
+          "FUNCTION",
+          "select",
+          ""
+        ],
+        "143": [
+          "FUNCTION",
+          "select!",
+          ""
+        ],
+        "144": [
+          "FUNCTION",
+          "keep_if",
+          ""
+        ],
+        "145": [
+          "FUNCTION",
+          "values_at",
+          ""
+        ],
+        "146": [
+          "FUNCTION",
+          "delete",
+          ""
+        ],
+        "147": [
+          "FUNCTION",
+          "delete_at",
+          ""
+        ],
+        "148": [
+          "FUNCTION",
+          "delete_if",
+          ""
+        ],
+        "149": [
+          "FUNCTION",
+          "reject",
+          ""
+        ],
+        "150": [
+          "FUNCTION",
+          "reject!",
+          ""
+        ],
+        "151": [
+          "FUNCTION",
+          "zip",
+          ""
+        ],
+        "152": [
+          "FUNCTION",
+          "transpose",
+          ""
+        ],
+        "153": [
+          "FUNCTION",
+          "replace",
+          ""
+        ],
+        "154": [
+          "FUNCTION",
+          "clear",
+          ""
+        ],
+        "155": [
+          "FUNCTION",
+          "fill",
+          ""
+        ],
+        "156": [
+          "FUNCTION",
+          "include?",
+          ""
+        ],
+        "157": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "158": [
+          "FUNCTION",
+          "slice",
+          ""
+        ],
+        "159": [
+          "FUNCTION",
+          "slice!",
+          ""
+        ],
+        "160": [
+          "FUNCTION",
+          "assoc",
+          ""
+        ],
+        "161": [
+          "FUNCTION",
+          "rassoc",
+          ""
+        ],
+        "162": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "163": [
+          "FUNCTION",
+          "*",
+          ""
+        ],
+        "164": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "165": [
+          "FUNCTION",
+          "&",
+          ""
+        ],
+        "166": [
+          "FUNCTION",
+          "|",
+          ""
+        ],
+        "167": [
+          "FUNCTION",
+          "uniq",
+          ""
+        ],
+        "168": [
+          "FUNCTION",
+          "uniq!",
+          ""
+        ],
+        "169": [
+          "FUNCTION",
+          "compact",
+          ""
+        ],
+        "170": [
+          "FUNCTION",
+          "compact!",
+          ""
+        ],
+        "171": [
+          "FUNCTION",
+          "flatten",
+          ""
+        ],
+        "172": [
+          "FUNCTION",
+          "flatten!",
+          ""
+        ],
+        "173": [
+          "FUNCTION",
+          "count",
+          ""
+        ],
+        "174": [
+          "FUNCTION",
+          "shuffle!",
+          ""
+        ],
+        "175": [
+          "FUNCTION",
+          "shuffle",
+          ""
+        ],
+        "176": [
+          "FUNCTION",
+          "sample",
+          ""
+        ],
+        "177": [
+          "FUNCTION",
+          "cycle",
+          ""
+        ],
+        "178": [
+          "FUNCTION",
+          "permutation",
+          ""
+        ],
+        "179": [
+          "FUNCTION",
+          "combination",
+          ""
+        ],
+        "180": [
+          "FUNCTION",
+          "repeated_permutation",
+          ""
+        ],
+        "181": [
+          "FUNCTION",
+          "repeated_combination",
+          ""
+        ],
+        "182": [
+          "FUNCTION",
+          "product",
+          ""
+        ],
+        "183": [
+          "FUNCTION",
+          "take",
+          ""
+        ],
+        "184": [
+          "FUNCTION",
+          "take_while",
+          ""
+        ],
+        "185": [
+          "FUNCTION",
+          "drop",
+          ""
+        ],
+        "186": [
+          "FUNCTION",
+          "drop_while",
+          ""
+        ],
+        "187": [
+          "FUNCTION",
+          "bsearch",
+          ""
+        ],
+        "188": [
+          "FUNCTION",
+          "any?",
+          ""
+        ],
+        "189": [
+          "FUNCTION",
+          "pack",
+          ""
+        ],
+        "190": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "191": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Array>:11",
+          "frame_id": 2,
+          "unique_hash": "<class:Array>:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Array",
+          [
+
+          ],
+          [
+            "self.[]",
+            [
+              "REF",
+              192
+            ]
+          ],
+          [
+            "self.try_convert",
+            [
+              "REF",
+              193
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              194
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              195
+            ]
+          ],
+          [
+            "to_a",
+            [
+              "REF",
+              196
+            ]
+          ],
+          [
+            "to_h",
+            [
+              "REF",
+              197
+            ]
+          ],
+          [
+            "to_ary",
+            [
+              "REF",
+              198
+            ]
+          ],
+          [
+            "frozen?",
+            [
+              "REF",
+              199
+            ]
+          ],
+          [
+            "==",
+            [
+              "REF",
+              200
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              201
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              202
+            ]
+          ],
+          [
+            "[]",
+            [
+              "REF",
+              203
+            ]
+          ],
+          [
+            "[]=",
+            [
+              "REF",
+              204
+            ]
+          ],
+          [
+            "at",
+            [
+              "REF",
+              205
+            ]
+          ],
+          [
+            "fetch",
+            [
+              "REF",
+              206
+            ]
+          ],
+          [
+            "first",
+            [
+              "REF",
+              207
+            ]
+          ],
+          [
+            "last",
+            [
+              "REF",
+              208
+            ]
+          ],
+          [
+            "concat",
+            [
+              "REF",
+              209
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              210
+            ]
+          ],
+          [
+            "push",
+            [
+              "REF",
+              211
+            ]
+          ],
+          [
+            "pop",
+            [
+              "REF",
+              212
+            ]
+          ],
+          [
+            "shift",
+            [
+              "REF",
+              213
+            ]
+          ],
+          [
+            "unshift",
+            [
+              "REF",
+              214
+            ]
+          ],
+          [
+            "insert",
+            [
+              "REF",
+              215
+            ]
+          ],
+          [
+            "each",
+            [
+              "REF",
+              216
+            ]
+          ],
+          [
+            "each_index",
+            [
+              "REF",
+              217
+            ]
+          ],
+          [
+            "reverse_each",
+            [
+              "REF",
+              218
+            ]
+          ],
+          [
+            "length",
+            [
+              "REF",
+              219
+            ]
+          ],
+          [
+            "size",
+            [
+              "REF",
+              220
+            ]
+          ],
+          [
+            "empty?",
+            [
+              "REF",
+              221
+            ]
+          ],
+          [
+            "find_index",
+            [
+              "REF",
+              222
+            ]
+          ],
+          [
+            "index",
+            [
+              "REF",
+              223
+            ]
+          ],
+          [
+            "rindex",
+            [
+              "REF",
+              224
+            ]
+          ],
+          [
+            "join",
+            [
+              "REF",
+              225
+            ]
+          ],
+          [
+            "reverse",
+            [
+              "REF",
+              226
+            ]
+          ],
+          [
+            "reverse!",
+            [
+              "REF",
+              227
+            ]
+          ],
+          [
+            "rotate",
+            [
+              "REF",
+              228
+            ]
+          ],
+          [
+            "rotate!",
+            [
+              "REF",
+              229
+            ]
+          ],
+          [
+            "sort",
+            [
+              "REF",
+              230
+            ]
+          ],
+          [
+            "sort!",
+            [
+              "REF",
+              231
+            ]
+          ],
+          [
+            "sort_by!",
+            [
+              "REF",
+              232
+            ]
+          ],
+          [
+            "collect",
+            [
+              "REF",
+              233
+            ]
+          ],
+          [
+            "collect!",
+            [
+              "REF",
+              234
+            ]
+          ],
+          [
+            "map",
+            [
+              "REF",
+              235
+            ]
+          ],
+          [
+            "map!",
+            [
+              "REF",
+              236
+            ]
+          ],
+          [
+            "select",
+            [
+              "REF",
+              237
+            ]
+          ],
+          [
+            "select!",
+            [
+              "REF",
+              238
+            ]
+          ],
+          [
+            "keep_if",
+            [
+              "REF",
+              239
+            ]
+          ],
+          [
+            "values_at",
+            [
+              "REF",
+              240
+            ]
+          ],
+          [
+            "delete",
+            [
+              "REF",
+              241
+            ]
+          ],
+          [
+            "delete_at",
+            [
+              "REF",
+              242
+            ]
+          ],
+          [
+            "delete_if",
+            [
+              "REF",
+              243
+            ]
+          ],
+          [
+            "reject",
+            [
+              "REF",
+              244
+            ]
+          ],
+          [
+            "reject!",
+            [
+              "REF",
+              245
+            ]
+          ],
+          [
+            "zip",
+            [
+              "REF",
+              246
+            ]
+          ],
+          [
+            "transpose",
+            [
+              "REF",
+              247
+            ]
+          ],
+          [
+            "replace",
+            [
+              "REF",
+              248
+            ]
+          ],
+          [
+            "clear",
+            [
+              "REF",
+              249
+            ]
+          ],
+          [
+            "fill",
+            [
+              "REF",
+              250
+            ]
+          ],
+          [
+            "include?",
+            [
+              "REF",
+              251
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              252
+            ]
+          ],
+          [
+            "slice",
+            [
+              "REF",
+              253
+            ]
+          ],
+          [
+            "slice!",
+            [
+              "REF",
+              254
+            ]
+          ],
+          [
+            "assoc",
+            [
+              "REF",
+              255
+            ]
+          ],
+          [
+            "rassoc",
+            [
+              "REF",
+              256
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              257
+            ]
+          ],
+          [
+            "*",
+            [
+              "REF",
+              258
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              259
+            ]
+          ],
+          [
+            "&",
+            [
+              "REF",
+              260
+            ]
+          ],
+          [
+            "|",
+            [
+              "REF",
+              261
+            ]
+          ],
+          [
+            "uniq",
+            [
+              "REF",
+              262
+            ]
+          ],
+          [
+            "uniq!",
+            [
+              "REF",
+              263
+            ]
+          ],
+          [
+            "compact",
+            [
+              "REF",
+              264
+            ]
+          ],
+          [
+            "compact!",
+            [
+              "REF",
+              265
+            ]
+          ],
+          [
+            "flatten",
+            [
+              "REF",
+              266
+            ]
+          ],
+          [
+            "flatten!",
+            [
+              "REF",
+              267
+            ]
+          ],
+          [
+            "count",
+            [
+              "REF",
+              268
+            ]
+          ],
+          [
+            "shuffle!",
+            [
+              "REF",
+              269
+            ]
+          ],
+          [
+            "shuffle",
+            [
+              "REF",
+              270
+            ]
+          ],
+          [
+            "sample",
+            [
+              "REF",
+              271
+            ]
+          ],
+          [
+            "cycle",
+            [
+              "REF",
+              272
+            ]
+          ],
+          [
+            "permutation",
+            [
+              "REF",
+              273
+            ]
+          ],
+          [
+            "combination",
+            [
+              "REF",
+              274
+            ]
+          ],
+          [
+            "repeated_permutation",
+            [
+              "REF",
+              275
+            ]
+          ],
+          [
+            "repeated_combination",
+            [
+              "REF",
+              276
+            ]
+          ],
+          [
+            "product",
+            [
+              "REF",
+              277
+            ]
+          ],
+          [
+            "take",
+            [
+              "REF",
+              278
+            ]
+          ],
+          [
+            "take_while",
+            [
+              "REF",
+              279
+            ]
+          ],
+          [
+            "drop",
+            [
+              "REF",
+              280
+            ]
+          ],
+          [
+            "drop_while",
+            [
+              "REF",
+              281
+            ]
+          ],
+          [
+            "bsearch",
+            [
+              "REF",
+              282
+            ]
+          ],
+          [
+            "any?",
+            [
+              "REF",
+              283
+            ]
+          ],
+          [
+            "pack",
+            [
+              "REF",
+              284
+            ]
+          ],
+          [
+            "iterate!",
+            [
+              "REF",
+              285
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              286
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              287
+            ]
+          ]
+        ],
+        "192": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "193": [
+          "FUNCTION",
+          "try_convert",
+          ""
+        ],
+        "194": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "195": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "196": [
+          "FUNCTION",
+          "to_a",
+          ""
+        ],
+        "197": [
+          "FUNCTION",
+          "to_h",
+          ""
+        ],
+        "198": [
+          "FUNCTION",
+          "to_ary",
+          ""
+        ],
+        "199": [
+          "FUNCTION",
+          "frozen?",
+          ""
+        ],
+        "200": [
+          "FUNCTION",
+          "==",
+          ""
+        ],
+        "201": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "202": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "203": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "204": [
+          "FUNCTION",
+          "[]=",
+          ""
+        ],
+        "205": [
+          "FUNCTION",
+          "at",
+          ""
+        ],
+        "206": [
+          "FUNCTION",
+          "fetch",
+          ""
+        ],
+        "207": [
+          "FUNCTION",
+          "first",
+          ""
+        ],
+        "208": [
+          "FUNCTION",
+          "last",
+          ""
+        ],
+        "209": [
+          "FUNCTION",
+          "concat",
+          ""
+        ],
+        "210": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "211": [
+          "FUNCTION",
+          "push",
+          ""
+        ],
+        "212": [
+          "FUNCTION",
+          "pop",
+          ""
+        ],
+        "213": [
+          "FUNCTION",
+          "shift",
+          ""
+        ],
+        "214": [
+          "FUNCTION",
+          "unshift",
+          ""
+        ],
+        "215": [
+          "FUNCTION",
+          "insert",
+          ""
+        ],
+        "216": [
+          "FUNCTION",
+          "each",
+          ""
+        ],
+        "217": [
+          "FUNCTION",
+          "each_index",
+          ""
+        ],
+        "218": [
+          "FUNCTION",
+          "reverse_each",
+          ""
+        ],
+        "219": [
+          "FUNCTION",
+          "length",
+          ""
+        ],
+        "220": [
+          "FUNCTION",
+          "size",
+          ""
+        ],
+        "221": [
+          "FUNCTION",
+          "empty?",
+          ""
+        ],
+        "222": [
+          "FUNCTION",
+          "find_index",
+          ""
+        ],
+        "223": [
+          "FUNCTION",
+          "index",
+          ""
+        ],
+        "224": [
+          "FUNCTION",
+          "rindex",
+          ""
+        ],
+        "225": [
+          "FUNCTION",
+          "join",
+          ""
+        ],
+        "226": [
+          "FUNCTION",
+          "reverse",
+          ""
+        ],
+        "227": [
+          "FUNCTION",
+          "reverse!",
+          ""
+        ],
+        "228": [
+          "FUNCTION",
+          "rotate",
+          ""
+        ],
+        "229": [
+          "FUNCTION",
+          "rotate!",
+          ""
+        ],
+        "230": [
+          "FUNCTION",
+          "sort",
+          ""
+        ],
+        "231": [
+          "FUNCTION",
+          "sort!",
+          ""
+        ],
+        "232": [
+          "FUNCTION",
+          "sort_by!",
+          ""
+        ],
+        "233": [
+          "FUNCTION",
+          "collect",
+          ""
+        ],
+        "234": [
+          "FUNCTION",
+          "collect!",
+          ""
+        ],
+        "235": [
+          "FUNCTION",
+          "map",
+          ""
+        ],
+        "236": [
+          "FUNCTION",
+          "map!",
+          ""
+        ],
+        "237": [
+          "FUNCTION",
+          "select",
+          ""
+        ],
+        "238": [
+          "FUNCTION",
+          "select!",
+          ""
+        ],
+        "239": [
+          "FUNCTION",
+          "keep_if",
+          ""
+        ],
+        "240": [
+          "FUNCTION",
+          "values_at",
+          ""
+        ],
+        "241": [
+          "FUNCTION",
+          "delete",
+          ""
+        ],
+        "242": [
+          "FUNCTION",
+          "delete_at",
+          ""
+        ],
+        "243": [
+          "FUNCTION",
+          "delete_if",
+          ""
+        ],
+        "244": [
+          "FUNCTION",
+          "reject",
+          ""
+        ],
+        "245": [
+          "FUNCTION",
+          "reject!",
+          ""
+        ],
+        "246": [
+          "FUNCTION",
+          "zip",
+          ""
+        ],
+        "247": [
+          "FUNCTION",
+          "transpose",
+          ""
+        ],
+        "248": [
+          "FUNCTION",
+          "replace",
+          ""
+        ],
+        "249": [
+          "FUNCTION",
+          "clear",
+          ""
+        ],
+        "250": [
+          "FUNCTION",
+          "fill",
+          ""
+        ],
+        "251": [
+          "FUNCTION",
+          "include?",
+          ""
+        ],
+        "252": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "253": [
+          "FUNCTION",
+          "slice",
+          ""
+        ],
+        "254": [
+          "FUNCTION",
+          "slice!",
+          ""
+        ],
+        "255": [
+          "FUNCTION",
+          "assoc",
+          ""
+        ],
+        "256": [
+          "FUNCTION",
+          "rassoc",
+          ""
+        ],
+        "257": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "258": [
+          "FUNCTION",
+          "*",
+          ""
+        ],
+        "259": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "260": [
+          "FUNCTION",
+          "&",
+          ""
+        ],
+        "261": [
+          "FUNCTION",
+          "|",
+          ""
+        ],
+        "262": [
+          "FUNCTION",
+          "uniq",
+          ""
+        ],
+        "263": [
+          "FUNCTION",
+          "uniq!",
+          ""
+        ],
+        "264": [
+          "FUNCTION",
+          "compact",
+          ""
+        ],
+        "265": [
+          "FUNCTION",
+          "compact!",
+          ""
+        ],
+        "266": [
+          "FUNCTION",
+          "flatten",
+          ""
+        ],
+        "267": [
+          "FUNCTION",
+          "flatten!",
+          ""
+        ],
+        "268": [
+          "FUNCTION",
+          "count",
+          ""
+        ],
+        "269": [
+          "FUNCTION",
+          "shuffle!",
+          ""
+        ],
+        "270": [
+          "FUNCTION",
+          "shuffle",
+          ""
+        ],
+        "271": [
+          "FUNCTION",
+          "sample",
+          ""
+        ],
+        "272": [
+          "FUNCTION",
+          "cycle",
+          ""
+        ],
+        "273": [
+          "FUNCTION",
+          "permutation",
+          ""
+        ],
+        "274": [
+          "FUNCTION",
+          "combination",
+          ""
+        ],
+        "275": [
+          "FUNCTION",
+          "repeated_permutation",
+          ""
+        ],
+        "276": [
+          "FUNCTION",
+          "repeated_combination",
+          ""
+        ],
+        "277": [
+          "FUNCTION",
+          "product",
+          ""
+        ],
+        "278": [
+          "FUNCTION",
+          "take",
+          ""
+        ],
+        "279": [
+          "FUNCTION",
+          "take_while",
+          ""
+        ],
+        "280": [
+          "FUNCTION",
+          "drop",
+          ""
+        ],
+        "281": [
+          "FUNCTION",
+          "drop_while",
+          ""
+        ],
+        "282": [
+          "FUNCTION",
+          "bsearch",
+          ""
+        ],
+        "283": [
+          "FUNCTION",
+          "any?",
+          ""
+        ],
+        "284": [
+          "FUNCTION",
+          "pack",
+          ""
+        ],
+        "285": [
+          "FUNCTION",
+          "iterate!",
+          ""
+        ],
+        "286": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "287": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Array>:16",
+          "frame_id": 2,
+          "unique_hash": "<class:Array>:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Array",
+          [
+
+          ],
+          [
+            "self.[]",
+            [
+              "REF",
+              288
+            ]
+          ],
+          [
+            "self.try_convert",
+            [
+              "REF",
+              289
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              290
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              291
+            ]
+          ],
+          [
+            "to_a",
+            [
+              "REF",
+              292
+            ]
+          ],
+          [
+            "to_h",
+            [
+              "REF",
+              293
+            ]
+          ],
+          [
+            "to_ary",
+            [
+              "REF",
+              294
+            ]
+          ],
+          [
+            "frozen?",
+            [
+              "REF",
+              295
+            ]
+          ],
+          [
+            "==",
+            [
+              "REF",
+              296
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              297
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              298
+            ]
+          ],
+          [
+            "[]",
+            [
+              "REF",
+              299
+            ]
+          ],
+          [
+            "[]=",
+            [
+              "REF",
+              300
+            ]
+          ],
+          [
+            "at",
+            [
+              "REF",
+              301
+            ]
+          ],
+          [
+            "fetch",
+            [
+              "REF",
+              302
+            ]
+          ],
+          [
+            "first",
+            [
+              "REF",
+              303
+            ]
+          ],
+          [
+            "last",
+            [
+              "REF",
+              304
+            ]
+          ],
+          [
+            "concat",
+            [
+              "REF",
+              305
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              306
+            ]
+          ],
+          [
+            "push",
+            [
+              "REF",
+              307
+            ]
+          ],
+          [
+            "pop",
+            [
+              "REF",
+              308
+            ]
+          ],
+          [
+            "shift",
+            [
+              "REF",
+              309
+            ]
+          ],
+          [
+            "unshift",
+            [
+              "REF",
+              310
+            ]
+          ],
+          [
+            "insert",
+            [
+              "REF",
+              311
+            ]
+          ],
+          [
+            "each",
+            [
+              "REF",
+              312
+            ]
+          ],
+          [
+            "each_index",
+            [
+              "REF",
+              313
+            ]
+          ],
+          [
+            "reverse_each",
+            [
+              "REF",
+              314
+            ]
+          ],
+          [
+            "length",
+            [
+              "REF",
+              315
+            ]
+          ],
+          [
+            "size",
+            [
+              "REF",
+              316
+            ]
+          ],
+          [
+            "empty?",
+            [
+              "REF",
+              317
+            ]
+          ],
+          [
+            "find_index",
+            [
+              "REF",
+              318
+            ]
+          ],
+          [
+            "index",
+            [
+              "REF",
+              319
+            ]
+          ],
+          [
+            "rindex",
+            [
+              "REF",
+              320
+            ]
+          ],
+          [
+            "join",
+            [
+              "REF",
+              321
+            ]
+          ],
+          [
+            "reverse",
+            [
+              "REF",
+              322
+            ]
+          ],
+          [
+            "reverse!",
+            [
+              "REF",
+              323
+            ]
+          ],
+          [
+            "rotate",
+            [
+              "REF",
+              324
+            ]
+          ],
+          [
+            "rotate!",
+            [
+              "REF",
+              325
+            ]
+          ],
+          [
+            "sort",
+            [
+              "REF",
+              326
+            ]
+          ],
+          [
+            "sort!",
+            [
+              "REF",
+              327
+            ]
+          ],
+          [
+            "sort_by!",
+            [
+              "REF",
+              328
+            ]
+          ],
+          [
+            "collect",
+            [
+              "REF",
+              329
+            ]
+          ],
+          [
+            "collect!",
+            [
+              "REF",
+              330
+            ]
+          ],
+          [
+            "map",
+            [
+              "REF",
+              331
+            ]
+          ],
+          [
+            "map!",
+            [
+              "REF",
+              332
+            ]
+          ],
+          [
+            "select",
+            [
+              "REF",
+              333
+            ]
+          ],
+          [
+            "select!",
+            [
+              "REF",
+              334
+            ]
+          ],
+          [
+            "keep_if",
+            [
+              "REF",
+              335
+            ]
+          ],
+          [
+            "values_at",
+            [
+              "REF",
+              336
+            ]
+          ],
+          [
+            "delete",
+            [
+              "REF",
+              337
+            ]
+          ],
+          [
+            "delete_at",
+            [
+              "REF",
+              338
+            ]
+          ],
+          [
+            "delete_if",
+            [
+              "REF",
+              339
+            ]
+          ],
+          [
+            "reject",
+            [
+              "REF",
+              340
+            ]
+          ],
+          [
+            "reject!",
+            [
+              "REF",
+              341
+            ]
+          ],
+          [
+            "zip",
+            [
+              "REF",
+              342
+            ]
+          ],
+          [
+            "transpose",
+            [
+              "REF",
+              343
+            ]
+          ],
+          [
+            "replace",
+            [
+              "REF",
+              344
+            ]
+          ],
+          [
+            "clear",
+            [
+              "REF",
+              345
+            ]
+          ],
+          [
+            "fill",
+            [
+              "REF",
+              346
+            ]
+          ],
+          [
+            "include?",
+            [
+              "REF",
+              347
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              348
+            ]
+          ],
+          [
+            "slice",
+            [
+              "REF",
+              349
+            ]
+          ],
+          [
+            "slice!",
+            [
+              "REF",
+              350
+            ]
+          ],
+          [
+            "assoc",
+            [
+              "REF",
+              351
+            ]
+          ],
+          [
+            "rassoc",
+            [
+              "REF",
+              352
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              353
+            ]
+          ],
+          [
+            "*",
+            [
+              "REF",
+              354
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              355
+            ]
+          ],
+          [
+            "&",
+            [
+              "REF",
+              356
+            ]
+          ],
+          [
+            "|",
+            [
+              "REF",
+              357
+            ]
+          ],
+          [
+            "uniq",
+            [
+              "REF",
+              358
+            ]
+          ],
+          [
+            "uniq!",
+            [
+              "REF",
+              359
+            ]
+          ],
+          [
+            "compact",
+            [
+              "REF",
+              360
+            ]
+          ],
+          [
+            "compact!",
+            [
+              "REF",
+              361
+            ]
+          ],
+          [
+            "flatten",
+            [
+              "REF",
+              362
+            ]
+          ],
+          [
+            "flatten!",
+            [
+              "REF",
+              363
+            ]
+          ],
+          [
+            "count",
+            [
+              "REF",
+              364
+            ]
+          ],
+          [
+            "shuffle!",
+            [
+              "REF",
+              365
+            ]
+          ],
+          [
+            "shuffle",
+            [
+              "REF",
+              366
+            ]
+          ],
+          [
+            "sample",
+            [
+              "REF",
+              367
+            ]
+          ],
+          [
+            "cycle",
+            [
+              "REF",
+              368
+            ]
+          ],
+          [
+            "permutation",
+            [
+              "REF",
+              369
+            ]
+          ],
+          [
+            "combination",
+            [
+              "REF",
+              370
+            ]
+          ],
+          [
+            "repeated_permutation",
+            [
+              "REF",
+              371
+            ]
+          ],
+          [
+            "repeated_combination",
+            [
+              "REF",
+              372
+            ]
+          ],
+          [
+            "product",
+            [
+              "REF",
+              373
+            ]
+          ],
+          [
+            "take",
+            [
+              "REF",
+              374
+            ]
+          ],
+          [
+            "take_while",
+            [
+              "REF",
+              375
+            ]
+          ],
+          [
+            "drop",
+            [
+              "REF",
+              376
+            ]
+          ],
+          [
+            "drop_while",
+            [
+              "REF",
+              377
+            ]
+          ],
+          [
+            "bsearch",
+            [
+              "REF",
+              378
+            ]
+          ],
+          [
+            "any?",
+            [
+              "REF",
+              379
+            ]
+          ],
+          [
+            "pack",
+            [
+              "REF",
+              380
+            ]
+          ],
+          [
+            "iterate!",
+            [
+              "REF",
+              381
+            ]
+          ],
+          [
+            "iterate_proc!",
+            [
+              "REF",
+              382
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              383
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              384
+            ]
+          ]
+        ],
+        "288": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "289": [
+          "FUNCTION",
+          "try_convert",
+          ""
+        ],
+        "290": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "291": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "292": [
+          "FUNCTION",
+          "to_a",
+          ""
+        ],
+        "293": [
+          "FUNCTION",
+          "to_h",
+          ""
+        ],
+        "294": [
+          "FUNCTION",
+          "to_ary",
+          ""
+        ],
+        "295": [
+          "FUNCTION",
+          "frozen?",
+          ""
+        ],
+        "296": [
+          "FUNCTION",
+          "==",
+          ""
+        ],
+        "297": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "298": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "299": [
+          "FUNCTION",
+          "[]",
+          ""
+        ],
+        "300": [
+          "FUNCTION",
+          "[]=",
+          ""
+        ],
+        "301": [
+          "FUNCTION",
+          "at",
+          ""
+        ],
+        "302": [
+          "FUNCTION",
+          "fetch",
+          ""
+        ],
+        "303": [
+          "FUNCTION",
+          "first",
+          ""
+        ],
+        "304": [
+          "FUNCTION",
+          "last",
+          ""
+        ],
+        "305": [
+          "FUNCTION",
+          "concat",
+          ""
+        ],
+        "306": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "307": [
+          "FUNCTION",
+          "push",
+          ""
+        ],
+        "308": [
+          "FUNCTION",
+          "pop",
+          ""
+        ],
+        "309": [
+          "FUNCTION",
+          "shift",
+          ""
+        ],
+        "310": [
+          "FUNCTION",
+          "unshift",
+          ""
+        ],
+        "311": [
+          "FUNCTION",
+          "insert",
+          ""
+        ],
+        "312": [
+          "FUNCTION",
+          "each",
+          ""
+        ],
+        "313": [
+          "FUNCTION",
+          "each_index",
+          ""
+        ],
+        "314": [
+          "FUNCTION",
+          "reverse_each",
+          ""
+        ],
+        "315": [
+          "FUNCTION",
+          "length",
+          ""
+        ],
+        "316": [
+          "FUNCTION",
+          "size",
+          ""
+        ],
+        "317": [
+          "FUNCTION",
+          "empty?",
+          ""
+        ],
+        "318": [
+          "FUNCTION",
+          "find_index",
+          ""
+        ],
+        "319": [
+          "FUNCTION",
+          "index",
+          ""
+        ],
+        "320": [
+          "FUNCTION",
+          "rindex",
+          ""
+        ],
+        "321": [
+          "FUNCTION",
+          "join",
+          ""
+        ],
+        "322": [
+          "FUNCTION",
+          "reverse",
+          ""
+        ],
+        "323": [
+          "FUNCTION",
+          "reverse!",
+          ""
+        ],
+        "324": [
+          "FUNCTION",
+          "rotate",
+          ""
+        ],
+        "325": [
+          "FUNCTION",
+          "rotate!",
+          ""
+        ],
+        "326": [
+          "FUNCTION",
+          "sort",
+          ""
+        ],
+        "327": [
+          "FUNCTION",
+          "sort!",
+          ""
+        ],
+        "328": [
+          "FUNCTION",
+          "sort_by!",
+          ""
+        ],
+        "329": [
+          "FUNCTION",
+          "collect",
+          ""
+        ],
+        "330": [
+          "FUNCTION",
+          "collect!",
+          ""
+        ],
+        "331": [
+          "FUNCTION",
+          "map",
+          ""
+        ],
+        "332": [
+          "FUNCTION",
+          "map!",
+          ""
+        ],
+        "333": [
+          "FUNCTION",
+          "select",
+          ""
+        ],
+        "334": [
+          "FUNCTION",
+          "select!",
+          ""
+        ],
+        "335": [
+          "FUNCTION",
+          "keep_if",
+          ""
+        ],
+        "336": [
+          "FUNCTION",
+          "values_at",
+          ""
+        ],
+        "337": [
+          "FUNCTION",
+          "delete",
+          ""
+        ],
+        "338": [
+          "FUNCTION",
+          "delete_at",
+          ""
+        ],
+        "339": [
+          "FUNCTION",
+          "delete_if",
+          ""
+        ],
+        "340": [
+          "FUNCTION",
+          "reject",
+          ""
+        ],
+        "341": [
+          "FUNCTION",
+          "reject!",
+          ""
+        ],
+        "342": [
+          "FUNCTION",
+          "zip",
+          ""
+        ],
+        "343": [
+          "FUNCTION",
+          "transpose",
+          ""
+        ],
+        "344": [
+          "FUNCTION",
+          "replace",
+          ""
+        ],
+        "345": [
+          "FUNCTION",
+          "clear",
+          ""
+        ],
+        "346": [
+          "FUNCTION",
+          "fill",
+          ""
+        ],
+        "347": [
+          "FUNCTION",
+          "include?",
+          ""
+        ],
+        "348": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "349": [
+          "FUNCTION",
+          "slice",
+          ""
+        ],
+        "350": [
+          "FUNCTION",
+          "slice!",
+          ""
+        ],
+        "351": [
+          "FUNCTION",
+          "assoc",
+          ""
+        ],
+        "352": [
+          "FUNCTION",
+          "rassoc",
+          ""
+        ],
+        "353": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "354": [
+          "FUNCTION",
+          "*",
+          ""
+        ],
+        "355": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "356": [
+          "FUNCTION",
+          "&",
+          ""
+        ],
+        "357": [
+          "FUNCTION",
+          "|",
+          ""
+        ],
+        "358": [
+          "FUNCTION",
+          "uniq",
+          ""
+        ],
+        "359": [
+          "FUNCTION",
+          "uniq!",
+          ""
+        ],
+        "360": [
+          "FUNCTION",
+          "compact",
+          ""
+        ],
+        "361": [
+          "FUNCTION",
+          "compact!",
+          ""
+        ],
+        "362": [
+          "FUNCTION",
+          "flatten",
+          ""
+        ],
+        "363": [
+          "FUNCTION",
+          "flatten!",
+          ""
+        ],
+        "364": [
+          "FUNCTION",
+          "count",
+          ""
+        ],
+        "365": [
+          "FUNCTION",
+          "shuffle!",
+          ""
+        ],
+        "366": [
+          "FUNCTION",
+          "shuffle",
+          ""
+        ],
+        "367": [
+          "FUNCTION",
+          "sample",
+          ""
+        ],
+        "368": [
+          "FUNCTION",
+          "cycle",
+          ""
+        ],
+        "369": [
+          "FUNCTION",
+          "permutation",
+          ""
+        ],
+        "370": [
+          "FUNCTION",
+          "combination",
+          ""
+        ],
+        "371": [
+          "FUNCTION",
+          "repeated_permutation",
+          ""
+        ],
+        "372": [
+          "FUNCTION",
+          "repeated_combination",
+          ""
+        ],
+        "373": [
+          "FUNCTION",
+          "product",
+          ""
+        ],
+        "374": [
+          "FUNCTION",
+          "take",
+          ""
+        ],
+        "375": [
+          "FUNCTION",
+          "take_while",
+          ""
+        ],
+        "376": [
+          "FUNCTION",
+          "drop",
+          ""
+        ],
+        "377": [
+          "FUNCTION",
+          "drop_while",
+          ""
+        ],
+        "378": [
+          "FUNCTION",
+          "bsearch",
+          ""
+        ],
+        "379": [
+          "FUNCTION",
+          "any?",
+          ""
+        ],
+        "380": [
+          "FUNCTION",
+          "pack",
+          ""
+        ],
+        "381": [
+          "FUNCTION",
+          "iterate!",
+          ""
+        ],
+        "382": [
+          "FUNCTION",
+          "iterate_proc!",
+          ""
+        ],
+        "383": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "384": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "iterate!:4",
+          "frame_id": 2,
+          "unique_hash": "iterate!:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:5",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "__return__": 1
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:7",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 1
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:5",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "i": 1,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "i": 1,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "i": 1,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "i": 1,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "i": 1,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "__return__": 4
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          2,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:7",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "i": 1,
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 4
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:5",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "i": 2,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "i": 2,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "i": 2,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "i": 2,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "i": 2,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "__return__": 9
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          3,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:7",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "i": 2,
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 9
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:5",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 3,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 3,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 3,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 3,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate!:6",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 3,
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:20",
+          "frame_id": 4,
+          "unique_hash": "block in <main>:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "__return__": 16
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          4
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate!:5",
+          "frame_id": 2,
+          "unique_hash": "iterate!:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate!:7",
+          "frame_id": 3,
+          "unique_hash": "block in iterate!:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 3,
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 16
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "iterate!:8",
+          "frame_id": 2,
+          "unique_hash": "iterate!:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 21,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:21",
+          "frame_id": 1,
+          "unique_hash": "<main>:21_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "iterate_proc!:11",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:12",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "__return__": 101
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          1,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:14",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "i": 0,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 101
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:12",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 1,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 1,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 1,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 1,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 1,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "__return__": 104
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          4,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:14",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "i": 1,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 104
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:12",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "i": 2,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "i": 2,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "i": 2,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 9
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "i": 2,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 9
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "i": 2,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "__return__": 109
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          9,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:14",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 9,
+            "i": 2,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 109
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:12",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "i": 3,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "i": 3,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "call",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "i": 3,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 16
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "i": 3,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 16
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in iterate_proc!:13",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "i": 3,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:23",
+          "frame_id": 5,
+          "unique_hash": "block in <main>:23_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "__return__": 116
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          16
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "iterate_proc!:12",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in iterate_proc!:14",
+          "frame_id": 3,
+          "unique_hash": "block in iterate_proc!:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "n",
+            "i",
+            "parent:cod",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 16,
+            "i": 3,
+            "parent:cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": 116
+          }
+        }
+      ],
+      "heap": {
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ],
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          116
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "return",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "iterate_proc!:15",
+          "frame_id": 2,
+          "unique_hash": "iterate_proc!:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "cod",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "cod": [
+              "REF",
+              182
+            ],
+            "self": [
+              "REF",
+              385
+            ],
+            "__return__": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          116
+        ],
+        "182": [
+          "Proc",
+          "Proc on line 23"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:24",
+          "frame_id": 1,
+          "unique_hash": "<main>:24_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          116
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "[1, 4, 9, 16]\n[101, 104, 109, 116]\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "array"
+          ],
+          "encoded_locals": {
+            "array": [
+              "REF",
+              385
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "385": [
+          "LIST",
+          101,
+          104,
+          109,
+          116
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/blocks-iterate.rb b/v4-cokapi/backends/ruby/tests/blocks-iterate.rb
new file mode 100644
index 000000000..4a18b7070
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-iterate.rb
@@ -0,0 +1,24 @@
+# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/
+
+class Array
+  def iterate!
+    self.each_with_index { |n, i|
+      self[i] = yield(n)
+    }
+  end
+
+  # & turns cod from a block to a proc, which has a call() method
+  def iterate_proc!(&cod)
+    self.each_with_index { |n, i|
+      self[i] = cod.call(n)
+    }
+  end
+end
+
+array = [1, 2, 3, 4]
+
+array.iterate! { |n| n ** 2 }
+puts array.inspect
+
+array.iterate_proc! { |n| n + 100 }
+puts array.inspect
diff --git a/v4-cokapi/backends/ruby/tests/blocks-scoping-2.golden b/v4-cokapi/backends/ruby/tests/blocks-scoping-2.golden
new file mode 100644
index 000000000..8b0ea328e
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-scoping-2.golden
@@ -0,0 +1,864 @@
+{
+  "code": "# how does lexical scoping work for blocks?\n\nx = 5\n\ndef gimme\n  y = 10\n  yield\n  puts \"You're welcome.\"\nend\n\ngimme do\n  puts x\n  x += 100 # can modify x in enclosing scope\n  puts x\n  puts y # can't find y since this is lexically scoped\nend\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:6",
+          "frame_id": 2,
+          "unique_hash": "gimme:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:13",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:14",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:15",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:15_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "exception",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:15",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:15_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ],
+      "exception_msg": "undefined local variable or method `y' for main:Object"
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "return",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:15",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:15_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "y": 10,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/blocks-scoping-2.rb b/v4-cokapi/backends/ruby/tests/blocks-scoping-2.rb
new file mode 100644
index 000000000..751ea88c2
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-scoping-2.rb
@@ -0,0 +1,16 @@
+# how does lexical scoping work for blocks?
+
+x = 5
+
+def gimme
+  y = 10
+  yield
+  puts "You're welcome."
+end
+
+gimme do
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts y # can't find y since this is lexically scoped
+end
diff --git a/v4-cokapi/backends/ruby/tests/blocks-scoping-3.golden b/v4-cokapi/backends/ruby/tests/blocks-scoping-3.golden
new file mode 100644
index 000000000..52aac22de
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-scoping-3.golden
@@ -0,0 +1,1567 @@
+{
+  "code": "# how does lexical scoping work for blocks?\n\nx = 5\n\ndef gimme\n  yield\n  puts \"end of gimme\"\nend\n\ndef bar\n  y = 42\n  gimme do\n    # everything inside of here can access y but *not* x\n    puts 'Hello'\n    puts y\n    y += 1000\n    puts y\n  end\n  puts 'end of bar'\n  puts y\nend\n\nbar\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "3": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          2
+        ],
+        "bar": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:10",
+          "frame_id": 2,
+          "unique_hash": "bar:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "5": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          4
+        ],
+        "bar": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:11",
+          "frame_id": 2,
+          "unique_hash": "bar:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "7": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          6
+        ],
+        "bar": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          8
+        ],
+        "bar": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:5",
+          "frame_id": 3,
+          "unique_hash": "gimme:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          10
+        ],
+        "bar": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          12
+        ],
+        "bar": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in bar:12",
+          "frame_id": 4,
+          "unique_hash": "block in bar:12_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "parent:y"
+          ],
+          "encoded_locals": {
+            "parent:y": 42
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "15": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          14
+        ],
+        "bar": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in bar:14",
+          "frame_id": 4,
+          "unique_hash": "block in bar:14_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "parent:y"
+          ],
+          "encoded_locals": {
+            "parent:y": 42
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "17": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          16
+        ],
+        "bar": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "Hello\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in bar:15",
+          "frame_id": 4,
+          "unique_hash": "block in bar:15_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "parent:y"
+          ],
+          "encoded_locals": {
+            "parent:y": 42
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "19": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          18
+        ],
+        "bar": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Hello\n42\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 42
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in bar:16",
+          "frame_id": 4,
+          "unique_hash": "block in bar:16_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "parent:y"
+          ],
+          "encoded_locals": {
+            "parent:y": 42
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          20
+        ],
+        "bar": [
+          "REF",
+          21
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "Hello\n42\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 1042
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in bar:17",
+          "frame_id": 4,
+          "unique_hash": "block in bar:17_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "parent:y"
+          ],
+          "encoded_locals": {
+            "parent:y": 1042
+          }
+        }
+      ],
+      "heap": {
+        "22": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          22
+        ],
+        "bar": [
+          "REF",
+          23
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "return",
+      "stdout": "Hello\n42\n1042\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 1042
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:6",
+          "frame_id": 3,
+          "unique_hash": "gimme:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in bar:18",
+          "frame_id": 4,
+          "unique_hash": "block in bar:18_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "parent:y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "parent:y": 1042,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "24": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          24
+        ],
+        "bar": [
+          "REF",
+          25
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "Hello\n42\n1042\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 1042
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:7",
+          "frame_id": 3,
+          "unique_hash": "gimme:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "26": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "27": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          26
+        ],
+        "bar": [
+          "REF",
+          27
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "return",
+      "stdout": "Hello\n42\n1042\nend of gimme\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 1042
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:8",
+          "frame_id": 3,
+          "unique_hash": "gimme:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "28": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          28
+        ],
+        "bar": [
+          "REF",
+          29
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Hello\n42\n1042\nend of gimme\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:19",
+          "frame_id": 2,
+          "unique_hash": "bar:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 1042
+          }
+        }
+      ],
+      "heap": {
+        "30": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          30
+        ],
+        "bar": [
+          "REF",
+          31
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "Hello\n42\n1042\nend of gimme\nend of bar\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:20",
+          "frame_id": 2,
+          "unique_hash": "bar:20_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 1042
+          }
+        }
+      ],
+      "heap": {
+        "32": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "33": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          32
+        ],
+        "bar": [
+          "REF",
+          33
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 21,
+      "event": "return",
+      "stdout": "Hello\n42\n1042\nend of gimme\nend of bar\n1042\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:21",
+          "frame_id": 2,
+          "unique_hash": "bar:21_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "y": 1042,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "34": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          34
+        ],
+        "bar": [
+          "REF",
+          35
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "Hello\n42\n1042\nend of gimme\nend of bar\n1042\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:24",
+          "frame_id": 1,
+          "unique_hash": "<main>:24_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+        "36": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "37": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          36
+        ],
+        "bar": [
+          "REF",
+          37
+        ]
+      },
+      "ordered_globals": [
+        "gimme",
+        "bar"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/blocks-scoping-3.rb b/v4-cokapi/backends/ruby/tests/blocks-scoping-3.rb
new file mode 100644
index 000000000..bbcee07a6
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-scoping-3.rb
@@ -0,0 +1,23 @@
+# how does lexical scoping work for blocks?
+
+x = 5
+
+def gimme
+  yield
+  puts "end of gimme"
+end
+
+def bar
+  y = 42
+  gimme do
+    # everything inside of here can access y but *not* x
+    puts 'Hello'
+    puts y
+    y += 1000
+    puts y
+  end
+  puts 'end of bar'
+  puts y
+end
+
+bar
diff --git a/v4-cokapi/backends/ruby/tests/blocks-scoping.golden b/v4-cokapi/backends/ruby/tests/blocks-scoping.golden
new file mode 100644
index 000000000..13369683b
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-scoping.golden
@@ -0,0 +1,855 @@
+{
+  "code": "# how does lexical scoping work for blocks?\n\nx = 5\n\ndef gimme\n  y = 10\n  yield\n  puts \"Done!\"\nend\n\ngimme do\n  puts x\n  x += 100 # can modify x in enclosing scope\n  puts x\nend\n\nputs x\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:5",
+          "frame_id": 2,
+          "unique_hash": "gimme:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:6",
+          "frame_id": 2,
+          "unique_hash": "gimme:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 5
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:13",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:14",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:14_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "return",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:7",
+          "frame_id": 2,
+          "unique_hash": "gimme:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:15",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:15_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:8",
+          "frame_id": 2,
+          "unique_hash": "gimme:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 10
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "5\n105\nDone!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:9",
+          "frame_id": 2,
+          "unique_hash": "gimme:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "y": 10,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "5\n105\nDone!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "5\n105\nDone!\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 105
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/blocks-scoping.rb b/v4-cokapi/backends/ruby/tests/blocks-scoping.rb
new file mode 100644
index 000000000..728baf349
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/blocks-scoping.rb
@@ -0,0 +1,17 @@
+# how does lexical scoping work for blocks?
+
+x = 5
+
+def gimme
+  y = 10
+  yield
+  puts "Done!"
+end
+
+gimme do
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+end
+
+puts x
diff --git a/v4-cokapi/backends/ruby/tests/class-inheritance.golden b/v4-cokapi/backends/ruby/tests/class-inheritance.golden
new file mode 100644
index 000000000..9a150fac6
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-inheritance.golden
@@ -0,0 +1,2908 @@
+{
+  "code": "# adapted from http://rubylearning.com/satishtalim/ruby_inheritance.html\nclass Mammal  \n  def breathe  \n    puts \"inhale and exhale\"  \n  end  \nend  \n  \nclass Cat < Mammal  \n  def speak  \n    puts \"Meow\"  \n  end  \nend  \n\nclass Tabby < Cat\n  def speak\n    puts \"Tabby meow\"\n  end\nend\n  \nrani = Cat.new  \nrani.breathe  \nrani.speak\n\ntab = Tabby.new\ntab.speak\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Mammal>:2",
+          "frame_id": 2,
+          "unique_hash": "<class:Mammal>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mammal"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Mammal>:3",
+          "frame_id": 2,
+          "unique_hash": "<class:Mammal>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mammal"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Mammal>:6",
+          "frame_id": 2,
+          "unique_hash": "<class:Mammal>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mammal"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mammal"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Cat>:8",
+          "frame_id": 2,
+          "unique_hash": "<class:Cat>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ]
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Cat>:9",
+          "frame_id": 2,
+          "unique_hash": "<class:Cat>:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              6
+            ]
+          ]
+        ],
+        "6": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ]
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Cat>:12",
+          "frame_id": 2,
+          "unique_hash": "<class:Cat>:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              8
+            ]
+          ]
+        ],
+        "8": [
+          "FUNCTION",
+          "speak",
+          ""
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              9
+            ]
+          ]
+        ],
+        "9": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              10
+            ]
+          ]
+        ],
+        "10": [
+          "FUNCTION",
+          "speak",
+          ""
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Tabby>:14",
+          "frame_id": 2,
+          "unique_hash": "<class:Tabby>:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              11
+            ]
+          ]
+        ],
+        "11": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              12
+            ]
+          ]
+        ],
+        "12": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ]
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Tabby>:15",
+          "frame_id": 2,
+          "unique_hash": "<class:Tabby>:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              14
+            ]
+          ]
+        ],
+        "14": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              15
+            ]
+          ]
+        ],
+        "15": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ]
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Tabby>:18",
+          "frame_id": 2,
+          "unique_hash": "<class:Tabby>:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              16
+            ]
+          ]
+        ],
+        "16": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              17
+            ]
+          ]
+        ],
+        "17": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              18
+            ]
+          ]
+        ],
+        "18": [
+          "FUNCTION",
+          "speak",
+          ""
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:20",
+          "frame_id": 1,
+          "unique_hash": "<main>:20_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": null,
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              19
+            ]
+          ]
+        ],
+        "19": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              20
+            ]
+          ]
+        ],
+        "20": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              21
+            ]
+          ]
+        ],
+        "21": [
+          "FUNCTION",
+          "speak",
+          ""
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 21,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:21",
+          "frame_id": 1,
+          "unique_hash": "<main>:21_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              22
+            ]
+          ]
+        ],
+        "22": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              23
+            ]
+          ]
+        ],
+        "23": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              24
+            ]
+          ]
+        ],
+        "24": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:21",
+          "frame_id": 1,
+          "unique_hash": "<main>:21_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "breathe:3",
+          "frame_id": 2,
+          "unique_hash": "breathe:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              25
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              26
+            ]
+          ]
+        ],
+        "26": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              27
+            ]
+          ]
+        ],
+        "27": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              28
+            ]
+          ]
+        ],
+        "28": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:21",
+          "frame_id": 1,
+          "unique_hash": "<main>:21_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "breathe:4",
+          "frame_id": 2,
+          "unique_hash": "breathe:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              25
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              29
+            ]
+          ]
+        ],
+        "29": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              30
+            ]
+          ]
+        ],
+        "30": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              31
+            ]
+          ]
+        ],
+        "31": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "inhale and exhale\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:21",
+          "frame_id": 1,
+          "unique_hash": "<main>:21_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "breathe:5",
+          "frame_id": 2,
+          "unique_hash": "breathe:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              25
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              32
+            ]
+          ]
+        ],
+        "32": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              33
+            ]
+          ]
+        ],
+        "33": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              34
+            ]
+          ]
+        ],
+        "34": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "inhale and exhale\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              35
+            ]
+          ]
+        ],
+        "35": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              36
+            ]
+          ]
+        ],
+        "36": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              37
+            ]
+          ]
+        ],
+        "37": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "inhale and exhale\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "speak:9",
+          "frame_id": 2,
+          "unique_hash": "speak:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              25
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              38
+            ]
+          ]
+        ],
+        "38": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              39
+            ]
+          ]
+        ],
+        "39": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              40
+            ]
+          ]
+        ],
+        "40": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "inhale and exhale\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "speak:10",
+          "frame_id": 2,
+          "unique_hash": "speak:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              25
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              41
+            ]
+          ]
+        ],
+        "41": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              42
+            ]
+          ]
+        ],
+        "42": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              43
+            ]
+          ]
+        ],
+        "43": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "inhale and exhale\nMeow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "speak:11",
+          "frame_id": 2,
+          "unique_hash": "speak:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              25
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              44
+            ]
+          ]
+        ],
+        "44": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              45
+            ]
+          ]
+        ],
+        "45": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              46
+            ]
+          ]
+        ],
+        "46": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "inhale and exhale\nMeow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:24",
+          "frame_id": 1,
+          "unique_hash": "<main>:24_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              47
+            ]
+          ]
+        ],
+        "47": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              48
+            ]
+          ]
+        ],
+        "48": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              49
+            ]
+          ]
+        ],
+        "49": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 25,
+      "event": "step_line",
+      "stdout": "inhale and exhale\nMeow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": [
+              "REF",
+              53
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              50
+            ]
+          ]
+        ],
+        "50": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              51
+            ]
+          ]
+        ],
+        "51": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              52
+            ]
+          ]
+        ],
+        "52": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ],
+        "53": [
+          "INSTANCE",
+          "Tabby"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "call",
+      "stdout": "inhale and exhale\nMeow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": [
+              "REF",
+              53
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "speak:15",
+          "frame_id": 2,
+          "unique_hash": "speak:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              53
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              54
+            ]
+          ]
+        ],
+        "54": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              55
+            ]
+          ]
+        ],
+        "55": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              56
+            ]
+          ]
+        ],
+        "56": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "53": [
+          "INSTANCE",
+          "Tabby"
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "inhale and exhale\nMeow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": [
+              "REF",
+              53
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "speak:16",
+          "frame_id": 2,
+          "unique_hash": "speak:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              53
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              57
+            ]
+          ]
+        ],
+        "57": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              58
+            ]
+          ]
+        ],
+        "58": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              59
+            ]
+          ]
+        ],
+        "59": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "53": [
+          "INSTANCE",
+          "Tabby"
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "return",
+      "stdout": "inhale and exhale\nMeow\nTabby meow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": [
+              "REF",
+              53
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "speak:17",
+          "frame_id": 2,
+          "unique_hash": "speak:17_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              53
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              60
+            ]
+          ]
+        ],
+        "60": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              61
+            ]
+          ]
+        ],
+        "61": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              62
+            ]
+          ]
+        ],
+        "62": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "53": [
+          "INSTANCE",
+          "Tabby"
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 25,
+      "event": "step_line",
+      "stdout": "inhale and exhale\nMeow\nTabby meow\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:26",
+          "frame_id": 1,
+          "unique_hash": "<main>:26_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "rani",
+            "tab"
+          ],
+          "encoded_locals": {
+            "rani": [
+              "REF",
+              25
+            ],
+            "tab": [
+              "REF",
+              53
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Mammal",
+          [
+
+          ],
+          [
+            "breathe",
+            [
+              "REF",
+              63
+            ]
+          ]
+        ],
+        "63": [
+          "FUNCTION",
+          "breathe",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Cat",
+          [
+            "Mammal"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              64
+            ]
+          ]
+        ],
+        "64": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "13": [
+          "CLASS",
+          "Tabby",
+          [
+            "Cat"
+          ],
+          [
+            "speak",
+            [
+              "REF",
+              65
+            ]
+          ]
+        ],
+        "65": [
+          "FUNCTION",
+          "speak",
+          ""
+        ],
+        "25": [
+          "INSTANCE",
+          "Cat"
+        ],
+        "53": [
+          "INSTANCE",
+          "Tabby"
+        ]
+      },
+      "globals": {
+        "Mammal": [
+          "REF",
+          1
+        ],
+        "Cat": [
+          "REF",
+          5
+        ],
+        "Tabby": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "Mammal",
+        "Cat",
+        "Tabby"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/class-inheritance.rb b/v4-cokapi/backends/ruby/tests/class-inheritance.rb
new file mode 100644
index 000000000..a3babc385
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-inheritance.rb
@@ -0,0 +1,25 @@
+# adapted from http://rubylearning.com/satishtalim/ruby_inheritance.html
+class Mammal  
+  def breathe  
+    puts "inhale and exhale"  
+  end  
+end  
+  
+class Cat < Mammal  
+  def speak  
+    puts "Meow"  
+  end  
+end  
+
+class Tabby < Cat
+  def speak
+    puts "Tabby meow"
+  end
+end
+  
+rani = Cat.new  
+rani.breathe  
+rani.speak
+
+tab = Tabby.new
+tab.speak
diff --git a/v4-cokapi/backends/ruby/tests/class-method.golden b/v4-cokapi/backends/ruby/tests/class-method.golden
new file mode 100644
index 000000000..c32e03af4
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-method.golden
@@ -0,0 +1,566 @@
+{
+  "code": "# from https://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Classes\nclass MyClass\n  def self.some_method\n    puts 'something'\n  end\nend\nMyClass.some_method\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:2",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:3",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:6",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.some_method",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "some_method",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.some_method",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "some_method",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "some_method:3",
+          "frame_id": 2,
+          "unique_hash": "some_method:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.some_method",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "some_method",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "some_method:4",
+          "frame_id": 2,
+          "unique_hash": "some_method:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.some_method",
+            [
+              "REF",
+              5
+            ]
+          ]
+        ],
+        "5": [
+          "FUNCTION",
+          "some_method",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "something\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "some_method:5",
+          "frame_id": 2,
+          "unique_hash": "some_method:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.some_method",
+            [
+              "REF",
+              6
+            ]
+          ]
+        ],
+        "6": [
+          "FUNCTION",
+          "some_method",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "something\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.some_method",
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "some_method",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/class-method.rb b/v4-cokapi/backends/ruby/tests/class-method.rb
new file mode 100644
index 000000000..1338e8c76
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-method.rb
@@ -0,0 +1,7 @@
+# from https://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Classes
+class MyClass
+  def self.some_method
+    puts 'something'
+  end
+end
+MyClass.some_method
diff --git a/v4-cokapi/backends/ruby/tests/class-private-protected.golden b/v4-cokapi/backends/ruby/tests/class-private-protected.golden
new file mode 100644
index 000000000..aca799fdb
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-private-protected.golden
@@ -0,0 +1,2530 @@
+{
+  "code": "class MyClass\n  def foo; end # instance method\n  def self.foo; end # class method\n\n  protected\n\n  def bar; end\n  def self.bar; end # NOP!\n\n  # variables shouldn't be affected\n  @@classVarX = 111\n  @instVarX = 222\n  \n  private\n\n  @@classVarY = 333\n  @instVarY = 444\n  \n  def baz; end\n  def self.baz; end # NOP!\n\n  # dynamically change visibility\n  public :baz\n  private :bar\n  private :foo\n\n  private_class_method :foo\n  private_class_method :bar\n  private_class_method :baz\nend\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:1",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:1_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:2",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:3",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:5",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "4": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:7",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              6
+            ]
+          ]
+        ],
+        "5": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "6": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:8",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              7
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              8
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              9
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "8": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:11",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              10
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              11
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              12
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              13
+            ]
+          ]
+        ],
+        "10": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "12": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:12",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              14
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              15
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              16
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              17
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ]
+        ],
+        "14": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "15": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "17": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:14",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              18
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              19
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              20
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              21
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@instVarX",
+            222
+          ]
+        ],
+        "18": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "19": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "20": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:16",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              22
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              23
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              24
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              25
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@instVarX",
+            222
+          ]
+        ],
+        "22": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "24": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:17",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:17_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              26
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              27
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              28
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              29
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ]
+        ],
+        "26": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "27": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "28": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:19",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              30
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              31
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              32
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              33
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "30": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "32": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "33": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:20",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:20_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              34
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              35
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              36
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              37
+            ]
+          ],
+          [
+            "baz [private]",
+            [
+              "REF",
+              38
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "34": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "36": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "37": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "38": [
+          "FUNCTION",
+          "baz",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:23",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:23_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              39
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              40
+            ]
+          ],
+          [
+            "self.baz",
+            [
+              "REF",
+              41
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              42
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              43
+            ]
+          ],
+          [
+            "baz [private]",
+            [
+              "REF",
+              44
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "39": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "40": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "41": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "42": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "43": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "44": [
+          "FUNCTION",
+          "baz",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:24",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:24_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              45
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              46
+            ]
+          ],
+          [
+            "self.baz",
+            [
+              "REF",
+              47
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              48
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              49
+            ]
+          ],
+          [
+            "bar [protected]",
+            [
+              "REF",
+              50
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "45": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "46": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "47": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "48": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "49": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "50": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 25,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:25",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:25_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              51
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              52
+            ]
+          ],
+          [
+            "self.baz",
+            [
+              "REF",
+              53
+            ]
+          ],
+          [
+            "foo",
+            [
+              "REF",
+              54
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              55
+            ]
+          ],
+          [
+            "bar [private]",
+            [
+              "REF",
+              56
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "51": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "52": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "53": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "54": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "55": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "56": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 27,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:27",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:27_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo",
+            [
+              "REF",
+              57
+            ]
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              58
+            ]
+          ],
+          [
+            "self.baz",
+            [
+              "REF",
+              59
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              60
+            ]
+          ],
+          [
+            "foo [private]",
+            [
+              "REF",
+              61
+            ]
+          ],
+          [
+            "bar [private]",
+            [
+              "REF",
+              62
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "57": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "58": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "59": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "60": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "61": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "62": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 28,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:28",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:28_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.bar",
+            [
+              "REF",
+              63
+            ]
+          ],
+          [
+            "self.baz",
+            [
+              "REF",
+              64
+            ]
+          ],
+          [
+            "self.foo [private]",
+            [
+              "REF",
+              65
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              66
+            ]
+          ],
+          [
+            "foo [private]",
+            [
+              "REF",
+              67
+            ]
+          ],
+          [
+            "bar [private]",
+            [
+              "REF",
+              68
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "63": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "64": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "65": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "66": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "67": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "68": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 29,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:29",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:29_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.baz",
+            [
+              "REF",
+              69
+            ]
+          ],
+          [
+            "self.foo [private]",
+            [
+              "REF",
+              70
+            ]
+          ],
+          [
+            "self.bar [private]",
+            [
+              "REF",
+              71
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              72
+            ]
+          ],
+          [
+            "foo [private]",
+            [
+              "REF",
+              73
+            ]
+          ],
+          [
+            "bar [private]",
+            [
+              "REF",
+              74
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "69": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "70": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "71": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "72": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "73": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "74": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 30,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:30",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:30_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo [private]",
+            [
+              "REF",
+              75
+            ]
+          ],
+          [
+            "self.bar [private]",
+            [
+              "REF",
+              76
+            ]
+          ],
+          [
+            "self.baz [private]",
+            [
+              "REF",
+              77
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              78
+            ]
+          ],
+          [
+            "foo [private]",
+            [
+              "REF",
+              79
+            ]
+          ],
+          [
+            "bar [private]",
+            [
+              "REF",
+              80
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "75": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "76": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "77": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "78": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "79": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "80": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 30,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:31",
+          "frame_id": 1,
+          "unique_hash": "<main>:31_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "self.foo [private]",
+            [
+              "REF",
+              81
+            ]
+          ],
+          [
+            "self.bar [private]",
+            [
+              "REF",
+              82
+            ]
+          ],
+          [
+            "self.baz [private]",
+            [
+              "REF",
+              83
+            ]
+          ],
+          [
+            "baz",
+            [
+              "REF",
+              84
+            ]
+          ],
+          [
+            "foo [private]",
+            [
+              "REF",
+              85
+            ]
+          ],
+          [
+            "bar [private]",
+            [
+              "REF",
+              86
+            ]
+          ],
+          [
+            "@@classVarX",
+            111
+          ],
+          [
+            "@@classVarY",
+            333
+          ],
+          [
+            "@instVarX",
+            222
+          ],
+          [
+            "@instVarY",
+            444
+          ]
+        ],
+        "81": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "82": [
+          "FUNCTION",
+          "bar",
+          ""
+        ],
+        "83": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "84": [
+          "FUNCTION",
+          "baz",
+          ""
+        ],
+        "85": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "86": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/class-private-protected.rb b/v4-cokapi/backends/ruby/tests/class-private-protected.rb
new file mode 100644
index 000000000..a46706484
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-private-protected.rb
@@ -0,0 +1,30 @@
+class MyClass
+  def foo; end # instance method
+  def self.foo; end # class method
+
+  protected
+
+  def bar; end
+  def self.bar; end # NOP!
+
+  # variables shouldn't be affected
+  @@classVarX = 111
+  @instVarX = 222
+  
+  private
+
+  @@classVarY = 333
+  @instVarY = 444
+  
+  def baz; end
+  def self.baz; end # NOP!
+
+  # dynamically change visibility
+  public :baz
+  private :bar
+  private :foo
+
+  private_class_method :foo
+  private_class_method :bar
+  private_class_method :baz
+end
diff --git a/v4-cokapi/backends/ruby/tests/class-variables.golden b/v4-cokapi/backends/ruby/tests/class-variables.golden
new file mode 100644
index 000000000..cbadd99bf
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-variables.golden
@@ -0,0 +1,2292 @@
+{
+  "code": "# from https://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Classes\n\nclass MyClass\n  @@value = 1\n  def add_one\n    @@value= @@value + 1\n  end\n  \n  def value\n    @@value\n  end\nend\ninstanceOne = MyClass.new\ninstanceTwo = MyClass.new\nputs instanceOne.value\ninstanceOne.add_one\nputs instanceOne.value\nputs instanceTwo.value\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:3",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:4",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:5",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:9",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MyClass>:12",
+          "frame_id": 2,
+          "unique_hash": "<class:MyClass>:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "4": [
+          "FUNCTION",
+          "value",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": null,
+            "instanceTwo": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "5": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "6": [
+          "FUNCTION",
+          "value",
+          ""
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              7
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              8
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "8": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              10
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              11
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "10": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:9",
+          "frame_id": 2,
+          "unique_hash": "value:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              13
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              14
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "13": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "14": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:10",
+          "frame_id": 2,
+          "unique_hash": "value:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              15
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              16
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "15": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:11",
+          "frame_id": 2,
+          "unique_hash": "value:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ],
+            "__return__": 1
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              17
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              18
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "17": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "18": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              19
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              20
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "19": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "20": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "add_one:5",
+          "frame_id": 2,
+          "unique_hash": "add_one:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              21
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              22
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "21": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "22": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "add_one:6",
+          "frame_id": 2,
+          "unique_hash": "add_one:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              23
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              24
+            ]
+          ],
+          [
+            "@@value",
+            1
+          ]
+        ],
+        "23": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "24": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "add_one:7",
+          "frame_id": 2,
+          "unique_hash": "add_one:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ],
+            "__return__": 2
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              25
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              26
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "25": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "26": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              27
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              28
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "27": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "28": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:9",
+          "frame_id": 2,
+          "unique_hash": "value:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              29
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              30
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "29": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "30": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:10",
+          "frame_id": 2,
+          "unique_hash": "value:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              31
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              32
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "31": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "32": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:11",
+          "frame_id": 2,
+          "unique_hash": "value:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              9
+            ],
+            "__return__": 2
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              33
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              34
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "33": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "34": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "step_line",
+      "stdout": "1\n2\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              35
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              36
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "35": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "36": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "1\n2\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:9",
+          "frame_id": 2,
+          "unique_hash": "value:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              37
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              38
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "37": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "38": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "1\n2\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:10",
+          "frame_id": 2,
+          "unique_hash": "value:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              39
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              40
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "39": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "40": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "1\n2\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "value:11",
+          "frame_id": 2,
+          "unique_hash": "value:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              12
+            ],
+            "__return__": 2
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              41
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              42
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "41": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "42": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "step_line",
+      "stdout": "1\n2\n2\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:19",
+          "frame_id": 1,
+          "unique_hash": "<main>:19_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "instanceOne",
+            "instanceTwo"
+          ],
+          "encoded_locals": {
+            "instanceOne": [
+              "REF",
+              9
+            ],
+            "instanceTwo": [
+              "REF",
+              12
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MyClass",
+          [
+
+          ],
+          [
+            "add_one",
+            [
+              "REF",
+              43
+            ]
+          ],
+          [
+            "value",
+            [
+              "REF",
+              44
+            ]
+          ],
+          [
+            "@@value",
+            2
+          ]
+        ],
+        "43": [
+          "FUNCTION",
+          "add_one",
+          ""
+        ],
+        "44": [
+          "FUNCTION",
+          "value",
+          ""
+        ],
+        "9": [
+          "INSTANCE",
+          "MyClass"
+        ],
+        "12": [
+          "INSTANCE",
+          "MyClass"
+        ]
+      },
+      "globals": {
+        "MyClass": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MyClass"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/class-variables.rb b/v4-cokapi/backends/ruby/tests/class-variables.rb
new file mode 100644
index 000000000..c8bfc6edc
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/class-variables.rb
@@ -0,0 +1,18 @@
+# from https://en.wikibooks.org/wiki/Ruby_Programming/Syntax/Classes
+
+class MyClass
+  @@value = 1
+  def add_one
+    @@value= @@value + 1
+  end
+  
+  def value
+    @@value
+  end
+end
+instanceOne = MyClass.new
+instanceTwo = MyClass.new
+puts instanceOne.value
+instanceOne.add_one
+puts instanceOne.value
+puts instanceTwo.value
diff --git a/v4-cokapi/backends/ruby/tests/classes-basic.golden b/v4-cokapi/backends/ruby/tests/classes-basic.golden
new file mode 100644
index 000000000..c7a9ed7cd
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/classes-basic.golden
@@ -0,0 +1,1771 @@
+{
+  "code": "=begin\nAdapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\nlalala\n=end\n\nclass Hello\n  def howdy\n    greeting = \"Hello, Matz!\"\n    puts greeting\n  end\nend\n\nclass Goodbye < Hello\n  def solong\n    farewell = \"Goodbye, Matz.\"\n    puts farewell\n  end\nend\n\nfriendly = Goodbye.new\nfriendly.howdy\nfriendly.solong\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Hello>:7",
+          "frame_id": 2,
+          "unique_hash": "<class:Hello>:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Hello"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Hello>:8",
+          "frame_id": 2,
+          "unique_hash": "<class:Hello>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Hello"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Hello>:12",
+          "frame_id": 2,
+          "unique_hash": "<class:Hello>:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Hello"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Hello"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Goodbye>:14",
+          "frame_id": 2,
+          "unique_hash": "<class:Goodbye>:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ]
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Goodbye>:15",
+          "frame_id": 2,
+          "unique_hash": "<class:Goodbye>:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              6
+            ]
+          ]
+        ],
+        "6": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ]
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Goodbye>:19",
+          "frame_id": 2,
+          "unique_hash": "<class:Goodbye>:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              8
+            ]
+          ]
+        ],
+        "8": [
+          "FUNCTION",
+          "solong",
+          ""
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 21,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:21",
+          "frame_id": 1,
+          "unique_hash": "<main>:21_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              9
+            ]
+          ]
+        ],
+        "9": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              10
+            ]
+          ]
+        ],
+        "10": [
+          "FUNCTION",
+          "solong",
+          ""
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              11
+            ]
+          ]
+        ],
+        "11": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              12
+            ]
+          ]
+        ],
+        "12": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "howdy:8",
+          "frame_id": 2,
+          "unique_hash": "howdy:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "greeting"
+          ],
+          "encoded_locals": {
+            "greeting": null,
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              14
+            ]
+          ]
+        ],
+        "14": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              15
+            ]
+          ]
+        ],
+        "15": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "howdy:9",
+          "frame_id": 2,
+          "unique_hash": "howdy:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "greeting"
+          ],
+          "encoded_locals": {
+            "greeting": null,
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              16
+            ]
+          ]
+        ],
+        "16": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              17
+            ]
+          ]
+        ],
+        "17": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "howdy:10",
+          "frame_id": 2,
+          "unique_hash": "howdy:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "greeting"
+          ],
+          "encoded_locals": {
+            "greeting": "Hello, Matz!",
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              18
+            ]
+          ]
+        ],
+        "18": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              19
+            ]
+          ]
+        ],
+        "19": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "Hello, Matz!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "howdy:11",
+          "frame_id": 2,
+          "unique_hash": "howdy:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "greeting",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "greeting": "Hello, Matz!",
+            "self": [
+              "REF",
+              13
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              20
+            ]
+          ]
+        ],
+        "20": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              21
+            ]
+          ]
+        ],
+        "21": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "Hello, Matz!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              22
+            ]
+          ]
+        ],
+        "22": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              23
+            ]
+          ]
+        ],
+        "23": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "call",
+      "stdout": "Hello, Matz!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "solong:15",
+          "frame_id": 2,
+          "unique_hash": "solong:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "farewell"
+          ],
+          "encoded_locals": {
+            "farewell": null,
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              24
+            ]
+          ]
+        ],
+        "24": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              25
+            ]
+          ]
+        ],
+        "25": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Hello, Matz!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "solong:16",
+          "frame_id": 2,
+          "unique_hash": "solong:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "farewell"
+          ],
+          "encoded_locals": {
+            "farewell": null,
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              26
+            ]
+          ]
+        ],
+        "26": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              27
+            ]
+          ]
+        ],
+        "27": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "Hello, Matz!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "solong:17",
+          "frame_id": 2,
+          "unique_hash": "solong:17_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "farewell"
+          ],
+          "encoded_locals": {
+            "farewell": "Goodbye, Matz.",
+            "self": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              28
+            ]
+          ]
+        ],
+        "28": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              29
+            ]
+          ]
+        ],
+        "29": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "return",
+      "stdout": "Hello, Matz!\nGoodbye, Matz.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "solong:18",
+          "frame_id": 2,
+          "unique_hash": "solong:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "farewell",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "farewell": "Goodbye, Matz.",
+            "self": [
+              "REF",
+              13
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              30
+            ]
+          ]
+        ],
+        "30": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              31
+            ]
+          ]
+        ],
+        "31": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "Hello, Matz!\nGoodbye, Matz.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:24",
+          "frame_id": 1,
+          "unique_hash": "<main>:24_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "friendly"
+          ],
+          "encoded_locals": {
+            "friendly": [
+              "REF",
+              13
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Hello",
+          [
+
+          ],
+          [
+            "howdy",
+            [
+              "REF",
+              32
+            ]
+          ]
+        ],
+        "32": [
+          "FUNCTION",
+          "howdy",
+          ""
+        ],
+        "5": [
+          "CLASS",
+          "Goodbye",
+          [
+            "Hello"
+          ],
+          [
+            "solong",
+            [
+              "REF",
+              33
+            ]
+          ]
+        ],
+        "33": [
+          "FUNCTION",
+          "solong",
+          ""
+        ],
+        "13": [
+          "INSTANCE",
+          "Goodbye"
+        ]
+      },
+      "globals": {
+        "Hello": [
+          "REF",
+          1
+        ],
+        "Goodbye": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "Hello",
+        "Goodbye"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/classes-basic.rb b/v4-cokapi/backends/ruby/tests/classes-basic.rb
new file mode 100644
index 000000000..faf733306
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/classes-basic.rb
@@ -0,0 +1,23 @@
+=begin
+Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+lalala
+=end
+
+class Hello
+  def howdy
+    greeting = "Hello, Matz!"
+    puts greeting
+  end
+end
+
+class Goodbye < Hello
+  def solong
+    farewell = "Goodbye, Matz."
+    puts farewell
+  end
+end
+
+friendly = Goodbye.new
+friendly.howdy
+friendly.solong
diff --git a/v4-cokapi/backends/ruby/tests/constants-2.golden b/v4-cokapi/backends/ruby/tests/constants-2.golden
new file mode 100644
index 000000000..240b98ad4
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-2.golden
@@ -0,0 +1,1410 @@
+{
+  "code": "# adapted from http://cirw.in/blog/constant-lookup.html\n\nmodule A\n  module B; end\n  module C\n    module D\n      puts B\n      puts A::B\n    end\n  end\nend\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:A>:3",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:A>:4",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:4",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:B>:4",
+          "frame_id": 3,
+          "unique_hash": "<module:B>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:4",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:B>:4",
+          "frame_id": 3,
+          "unique_hash": "<module:B>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:C>:5",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:C>:6",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:C>:6",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:D>:6",
+          "frame_id": 4,
+          "unique_hash": "<module:D>:6_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              4
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:C>:6",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:D>:7",
+          "frame_id": 4,
+          "unique_hash": "<module:D>:7_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              4
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "A::B\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:C>:6",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:D>:8",
+          "frame_id": 4,
+          "unique_hash": "<module:D>:8_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              4
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "A::B\nA::B\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:C>:6",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:D>:9",
+          "frame_id": 4,
+          "unique_hash": "<module:D>:9_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              4
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "A::B\nA::B\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "<module:A>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:C>:10",
+          "frame_id": 3,
+          "unique_hash": "<module:C>:10_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "A::B\nA::B\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:A>:11",
+          "frame_id": 2,
+          "unique_hash": "<module:A>:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "A::B\nA::B\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "B",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "C",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "INSTANCE",
+          "Module"
+        ],
+        "3": [
+          "INSTANCE",
+          "Module",
+          [
+            "D",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "A": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "A"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/constants-2.rb b/v4-cokapi/backends/ruby/tests/constants-2.rb
new file mode 100644
index 000000000..1a546cc5d
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-2.rb
@@ -0,0 +1,11 @@
+# adapted from http://cirw.in/blog/constant-lookup.html
+
+module A
+  module B; end
+  module C
+    module D
+      puts B
+      puts A::B
+    end
+  end
+end
diff --git a/v4-cokapi/backends/ruby/tests/constants-3.golden b/v4-cokapi/backends/ruby/tests/constants-3.golden
new file mode 100644
index 000000000..191c3f414
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-3.golden
@@ -0,0 +1,949 @@
+{
+  "code": "# adapted from http://www.tutorialspoint.com/ruby/ruby_variables.htm\n\nclass Example\n   VAR1 = 100\n   VAR2 = 200\n   def show\n       puts \"Value of first Constant is #{VAR1}\"\n       puts \"Value of second Constant is #{VAR2}\"\n   end\nend\n\n# Create Objects\nobject=Example.new()\nobject.show\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Example>:3",
+          "frame_id": 2,
+          "unique_hash": "<class:Example>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Example>:4",
+          "frame_id": 2,
+          "unique_hash": "<class:Example>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Example>:5",
+          "frame_id": 2,
+          "unique_hash": "<class:Example>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ]
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Example>:6",
+          "frame_id": 2,
+          "unique_hash": "<class:Example>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ]
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Example>:10",
+          "frame_id": 2,
+          "unique_hash": "<class:Example>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "show",
+          ""
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "show",
+          ""
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "show",
+          ""
+        ],
+        "5": [
+          "INSTANCE",
+          "Example"
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": [
+              "REF",
+              5
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "show:6",
+          "frame_id": 2,
+          "unique_hash": "show:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              6
+            ]
+          ]
+        ],
+        "6": [
+          "FUNCTION",
+          "show",
+          ""
+        ],
+        "5": [
+          "INSTANCE",
+          "Example"
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": [
+              "REF",
+              5
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "show:7",
+          "frame_id": 2,
+          "unique_hash": "show:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "show",
+          ""
+        ],
+        "5": [
+          "INSTANCE",
+          "Example"
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "Value of first Constant is 100\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": [
+              "REF",
+              5
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "show:8",
+          "frame_id": 2,
+          "unique_hash": "show:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              8
+            ]
+          ]
+        ],
+        "8": [
+          "FUNCTION",
+          "show",
+          ""
+        ],
+        "5": [
+          "INSTANCE",
+          "Example"
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "Value of first Constant is 100\nValue of second Constant is 200\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": [
+              "REF",
+              5
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "show:9",
+          "frame_id": 2,
+          "unique_hash": "show:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              5
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              9
+            ]
+          ]
+        ],
+        "9": [
+          "FUNCTION",
+          "show",
+          ""
+        ],
+        "5": [
+          "INSTANCE",
+          "Example"
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "Value of first Constant is 100\nValue of second Constant is 200\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "object"
+          ],
+          "encoded_locals": {
+            "object": [
+              "REF",
+              5
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Example",
+          [
+
+          ],
+          [
+            "VAR1",
+            100
+          ],
+          [
+            "VAR2",
+            200
+          ],
+          [
+            "show",
+            [
+              "REF",
+              10
+            ]
+          ]
+        ],
+        "10": [
+          "FUNCTION",
+          "show",
+          ""
+        ],
+        "5": [
+          "INSTANCE",
+          "Example"
+        ]
+      },
+      "globals": {
+        "Example": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Example"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/constants-3.rb b/v4-cokapi/backends/ruby/tests/constants-3.rb
new file mode 100644
index 000000000..2e2d87c32
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-3.rb
@@ -0,0 +1,14 @@
+# adapted from http://www.tutorialspoint.com/ruby/ruby_variables.htm
+
+class Example
+   VAR1 = 100
+   VAR2 = 200
+   def show
+       puts "Value of first Constant is #{VAR1}"
+       puts "Value of second Constant is #{VAR2}"
+   end
+end
+
+# Create Objects
+object=Example.new()
+object.show
diff --git a/v4-cokapi/backends/ruby/tests/constants-4.golden b/v4-cokapi/backends/ruby/tests/constants-4.golden
new file mode 100644
index 000000000..bdb88548f
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-4.golden
@@ -0,0 +1,910 @@
+{
+  "code": "# adapted from http://rubylearning.com/satishtalim/ruby_constants.html\n\nOUTER_CONST = 99  \n  \nclass Const  \n    def get_const  \n      CONST  \n    end  \n    CONST = OUTER_CONST + 1  \nend  \n  \nputs Const.new.get_const  \nputs Const::CONST  \nputs ::OUTER_CONST  \nputs Const::NEW_CONST = 123  \n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "OUTER_CONST": 99
+      },
+      "ordered_globals": [
+        "OUTER_CONST"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Const>:5",
+          "frame_id": 2,
+          "unique_hash": "<class:Const>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Const>:6",
+          "frame_id": 2,
+          "unique_hash": "<class:Const>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Const>:9",
+          "frame_id": 2,
+          "unique_hash": "<class:Const>:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              2
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:Const>:10",
+          "frame_id": 2,
+          "unique_hash": "<class:Const>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "get_const:6",
+          "frame_id": 2,
+          "unique_hash": "get_const:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              6
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              5
+            ]
+          ]
+        ],
+        "5": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ],
+        "6": [
+          "INSTANCE",
+          "Const"
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "get_const:7",
+          "frame_id": 2,
+          "unique_hash": "get_const:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              6
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ],
+        "6": [
+          "INSTANCE",
+          "Const"
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "get_const:8",
+          "frame_id": 2,
+          "unique_hash": "get_const:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              6
+            ],
+            "__return__": 100
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              8
+            ]
+          ]
+        ],
+        "8": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ],
+        "6": [
+          "INSTANCE",
+          "Const"
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "100\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              9
+            ]
+          ]
+        ],
+        "9": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "100\n100\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              10
+            ]
+          ]
+        ],
+        "10": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "100\n100\n99\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              11
+            ]
+          ]
+        ],
+        "11": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "100\n100\n99\n123\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Const",
+          [
+
+          ],
+          [
+            "CONST",
+            100
+          ],
+          [
+            "NEW_CONST",
+            123
+          ],
+          [
+            "get_const",
+            [
+              "REF",
+              12
+            ]
+          ]
+        ],
+        "12": [
+          "FUNCTION",
+          "get_const",
+          ""
+        ]
+      },
+      "globals": {
+        "OUTER_CONST": 99,
+        "Const": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "OUTER_CONST",
+        "Const"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/constants-4.rb b/v4-cokapi/backends/ruby/tests/constants-4.rb
new file mode 100644
index 000000000..cb5bc883f
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-4.rb
@@ -0,0 +1,15 @@
+# adapted from http://rubylearning.com/satishtalim/ruby_constants.html
+
+OUTER_CONST = 99  
+  
+class Const  
+    def get_const  
+      CONST  
+    end  
+    CONST = OUTER_CONST + 1  
+end  
+  
+puts Const.new.get_const  
+puts Const::CONST  
+puts ::OUTER_CONST  
+puts Const::NEW_CONST = 123  
diff --git a/v4-cokapi/backends/ruby/tests/constants-basic.golden b/v4-cokapi/backends/ruby/tests/constants-basic.golden
new file mode 100644
index 000000000..055c4557c
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-basic.golden
@@ -0,0 +1,174 @@
+{
+  "code": "localX = \"local hello\"\n$globalX = \"global hello\"\nCONSTANT_X = \"constant hello\"\nputs CONSTANT_X\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": null
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "local hello"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": null
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "local hello"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "global hello"
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "local hello"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "global hello",
+        "CONSTANT_X": "constant hello"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "CONSTANT_X"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "constant hello\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "local hello"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "global hello",
+        "CONSTANT_X": "constant hello"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "CONSTANT_X"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/constants-basic.rb b/v4-cokapi/backends/ruby/tests/constants-basic.rb
new file mode 100644
index 000000000..40cc05e8c
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/constants-basic.rb
@@ -0,0 +1,4 @@
+localX = "local hello"
+$globalX = "global hello"
+CONSTANT_X = "constant hello"
+puts CONSTANT_X
diff --git a/v4-cokapi/backends/ruby/tests/container-data-types.golden b/v4-cokapi/backends/ruby/tests/container-data-types.golden
new file mode 100644
index 000000000..fdf2e8199
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/container-data-types.golden
@@ -0,0 +1,456 @@
+{
+  "code": "require 'set'\n\nmy_array = [1, 2, 3, 'hello', false, true, nil]\nmy_hash = {'John' => 26, 'Jane' => 21, 'Jack' => 30}\nmy_set = my_array.to_set\n\nmy_hash['nested array'] = my_array\nmy_array[1] = ['a', 'b', 'c']\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": null,
+            "my_hash": null,
+            "my_set": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": null,
+            "my_hash": null,
+            "my_set": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": [
+              "REF",
+              1
+            ],
+            "my_hash": null,
+            "my_set": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "LIST",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": [
+              "REF",
+              1
+            ],
+            "my_hash": [
+              "REF",
+              2
+            ],
+            "my_set": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "LIST",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ],
+        "2": [
+          "DICT",
+          [
+            "John",
+            26
+          ],
+          [
+            "Jane",
+            21
+          ],
+          [
+            "Jack",
+            30
+          ]
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": [
+              "REF",
+              1
+            ],
+            "my_hash": [
+              "REF",
+              2
+            ],
+            "my_set": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "LIST",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ],
+        "2": [
+          "DICT",
+          [
+            "John",
+            26
+          ],
+          [
+            "Jane",
+            21
+          ],
+          [
+            "Jack",
+            30
+          ]
+        ],
+        "3": [
+          "SET",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": [
+              "REF",
+              1
+            ],
+            "my_hash": [
+              "REF",
+              2
+            ],
+            "my_set": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "LIST",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ],
+        "2": [
+          "DICT",
+          [
+            "John",
+            26
+          ],
+          [
+            "Jane",
+            21
+          ],
+          [
+            "Jack",
+            30
+          ],
+          [
+            "nested array",
+            [
+              "REF",
+              1
+            ]
+          ]
+        ],
+        "3": [
+          "SET",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "my_array",
+            "my_hash",
+            "my_set"
+          ],
+          "encoded_locals": {
+            "my_array": [
+              "REF",
+              1
+            ],
+            "my_hash": [
+              "REF",
+              2
+            ],
+            "my_set": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "LIST",
+          1,
+          [
+            "REF",
+            4
+          ],
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ],
+        "4": [
+          "LIST",
+          "a",
+          "b",
+          "c"
+        ],
+        "2": [
+          "DICT",
+          [
+            "John",
+            26
+          ],
+          [
+            "Jane",
+            21
+          ],
+          [
+            "Jack",
+            30
+          ],
+          [
+            "nested array",
+            [
+              "REF",
+              1
+            ]
+          ]
+        ],
+        "3": [
+          "SET",
+          1,
+          2,
+          3,
+          "hello",
+          false,
+          true,
+          null
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/container-data-types.rb b/v4-cokapi/backends/ruby/tests/container-data-types.rb
new file mode 100644
index 000000000..c5018a3a9
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/container-data-types.rb
@@ -0,0 +1,8 @@
+require 'set'
+
+my_array = [1, 2, 3, 'hello', false, true, nil]
+my_hash = {'John' => 26, 'Jane' => 21, 'Jack' => 30}
+my_set = my_array.to_set
+
+my_hash['nested array'] = my_array
+my_array[1] = ['a', 'b', 'c']
diff --git a/v4-cokapi/backends/ruby/tests/dates.golden b/v4-cokapi/backends/ruby/tests/dates.golden
new file mode 100644
index 000000000..b8c661327
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/dates.golden
@@ -0,0 +1,12957 @@
+{
+  "code": "require 'date'\n\nd1 = Date.new(2010, 10, 5)\nd2 = Date.new(2009, 11, 3)\nd3 = d1 - d2\nputs d1\nputs d2\nputs d3\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": null,
+            "d2": null,
+            "d3": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": null,
+            "d2": null,
+            "d3": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              19
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              20
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              21
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              22
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              23
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              24
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              25
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              26
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              27
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              28
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              29
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              30
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              31
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              32
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              33
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              34
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              35
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              36
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              37
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              38
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              39
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              40
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              41
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              42
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              43
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              44
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              45
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              46
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              47
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              48
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              49
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              50
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              51
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              52
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              53
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              54
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              55
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              56
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              57
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              58
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              59
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              60
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              61
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              62
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              63
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              64
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              65
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              66
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              67
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              68
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              69
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              70
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              71
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              72
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              73
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              74
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              75
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              76
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              77
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              78
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              79
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              80
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              81
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              82
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              83
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              84
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              85
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              86
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              87
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              88
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              89
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              90
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              91
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              92
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              93
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              94
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              95
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              96
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              97
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              98
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              99
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              100
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              101
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              102
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              103
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              104
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              105
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              106
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              107
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              108
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              109
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              110
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              111
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              112
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              113
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              114
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              115
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              116
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              117
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              118
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              119
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              120
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              121
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              122
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              123
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              124
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              125
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              126
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              127
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              128
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              129
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              7
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              8
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              9
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              10
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              11
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              12
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              13
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              14
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              15
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              16
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              17
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              18
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "8": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "10": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "12": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "14": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "15": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "17": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "18": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "20": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "22": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "24": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "26": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "27": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "28": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "30": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "32": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "33": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "34": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "36": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "37": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "38": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "39": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "40": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "41": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "42": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "43": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "44": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "45": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "46": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "47": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "48": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "49": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "50": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "51": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "52": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "53": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "54": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "55": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "56": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "57": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "58": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "59": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "60": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "61": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "62": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "63": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "64": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "65": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "66": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "67": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "68": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "69": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "70": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "71": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "72": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "73": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "74": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "75": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "76": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "77": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "78": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "79": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "80": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "81": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "82": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "83": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "84": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "85": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "86": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "87": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "88": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "89": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "90": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "91": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "92": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "93": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "94": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "95": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "96": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "97": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "98": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "99": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "100": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "101": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "102": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "103": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "104": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "105": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "106": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "107": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "108": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "109": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "110": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "111": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "112": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "113": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "114": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "115": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "116": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "117": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "118": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "119": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "120": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "121": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "122": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "123": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "124": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "125": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "126": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "127": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "128": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "129": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              131
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              132
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              133
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              134
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              135
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              136
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              137
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              138
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              139
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              140
+            ]
+          ]
+        ],
+        "131": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "132": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "133": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "134": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "135": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "136": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "137": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "138": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "139": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "140": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": [
+              "REF",
+              274
+            ],
+            "d2": null,
+            "d3": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              153
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              154
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              155
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              156
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              157
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              158
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              159
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              160
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              161
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              162
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              163
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              164
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              165
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              166
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              167
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              168
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              169
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              170
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              171
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              172
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              173
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              174
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              175
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              176
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              177
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              178
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              179
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              180
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              181
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              182
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              183
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              184
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              185
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              186
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              187
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              188
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              189
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              190
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              191
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              192
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              193
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              194
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              195
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              196
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              197
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              198
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              199
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              200
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              201
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              202
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              203
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              204
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              205
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              206
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              207
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              208
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              209
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              210
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              211
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              212
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              213
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              214
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              215
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              216
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              217
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              218
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              219
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              220
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              221
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              222
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              223
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              224
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              225
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              226
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              227
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              228
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              229
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              230
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              231
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              232
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              233
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              234
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              235
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              236
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              237
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              238
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              239
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              240
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              241
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              242
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              243
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              244
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              245
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              246
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              247
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              248
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              249
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              250
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              251
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              252
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              253
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              254
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              255
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              256
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              257
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              258
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              259
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              260
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              261
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              262
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              263
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              141
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              142
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              143
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              144
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              145
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              146
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              147
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              148
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              149
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              150
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              151
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              152
+            ]
+          ]
+        ],
+        "141": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "142": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "143": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "144": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "145": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "146": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "147": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "148": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "149": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "150": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "151": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "152": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "153": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "154": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "155": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "156": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "157": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "158": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "159": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "160": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "161": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "162": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "163": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "164": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "165": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "166": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "167": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "168": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "169": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "170": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "171": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "172": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "173": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "174": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "175": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "176": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "177": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "178": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "179": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "180": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "181": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "182": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "183": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "184": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "185": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "186": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "187": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "188": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "189": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "190": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "191": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "192": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "193": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "194": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "195": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "196": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "197": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "198": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "199": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "200": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "201": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "202": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "203": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "204": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "205": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "206": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "207": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "208": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "209": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "210": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "211": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "212": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "213": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "214": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "215": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "216": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "217": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "218": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "219": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "220": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "221": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "222": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "223": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "224": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "225": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "226": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "227": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "228": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "229": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "230": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "231": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "232": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "233": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "234": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "235": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "236": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "237": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "238": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "239": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "240": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "241": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "242": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "243": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "244": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "245": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "246": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "247": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "248": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "249": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "250": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "251": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "252": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "253": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "254": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "255": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "256": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "257": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "258": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "259": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "260": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "261": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "262": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "263": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              264
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              265
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              266
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              267
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              268
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              269
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              270
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              271
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              272
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              273
+            ]
+          ]
+        ],
+        "264": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "265": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "266": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "267": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "268": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "269": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "270": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "271": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "272": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "273": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "274": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2010-10-05"
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": [
+              "REF",
+              274
+            ],
+            "d2": [
+              "REF",
+              408
+            ],
+            "d3": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              287
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              288
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              289
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              290
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              291
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              292
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              293
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              294
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              295
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              296
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              297
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              298
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              299
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              300
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              301
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              302
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              303
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              304
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              305
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              306
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              307
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              308
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              309
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              310
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              311
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              312
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              313
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              314
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              315
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              316
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              317
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              318
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              319
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              320
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              321
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              322
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              323
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              324
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              325
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              326
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              327
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              328
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              329
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              330
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              331
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              332
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              333
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              334
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              335
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              336
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              337
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              338
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              339
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              340
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              341
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              342
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              343
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              344
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              345
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              346
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              347
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              348
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              349
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              350
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              351
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              352
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              353
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              354
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              355
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              356
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              357
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              358
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              359
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              360
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              361
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              362
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              363
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              364
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              365
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              366
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              367
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              368
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              369
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              370
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              371
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              372
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              373
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              374
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              375
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              376
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              377
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              378
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              379
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              380
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              381
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              382
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              383
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              384
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              385
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              386
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              387
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              388
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              389
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              390
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              391
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              392
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              393
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              394
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              395
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              396
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              397
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              275
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              276
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              277
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              278
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              279
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              280
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              281
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              282
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              283
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              284
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              285
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              286
+            ]
+          ]
+        ],
+        "275": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "276": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "277": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "278": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "279": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "280": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "281": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "282": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "283": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "284": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "285": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "286": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "287": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "288": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "289": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "290": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "291": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "292": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "293": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "294": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "295": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "296": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "297": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "298": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "299": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "300": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "301": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "302": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "303": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "304": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "305": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "306": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "307": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "308": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "309": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "310": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "311": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "312": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "313": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "314": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "315": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "316": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "317": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "318": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "319": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "320": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "321": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "322": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "323": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "324": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "325": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "326": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "327": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "328": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "329": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "330": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "331": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "332": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "333": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "334": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "335": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "336": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "337": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "338": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "339": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "340": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "341": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "342": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "343": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "344": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "345": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "346": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "347": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "348": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "349": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "350": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "351": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "352": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "353": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "354": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "355": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "356": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "357": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "358": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "359": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "360": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "361": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "362": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "363": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "364": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "365": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "366": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "367": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "368": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "369": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "370": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "371": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "372": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "373": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "374": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "375": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "376": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "377": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "378": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "379": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "380": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "381": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "382": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "383": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "384": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "385": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "386": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "387": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "388": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "389": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "390": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "391": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "392": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "393": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "394": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "395": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "396": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "397": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              398
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              399
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              400
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              401
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              402
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              403
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              404
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              405
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              406
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              407
+            ]
+          ]
+        ],
+        "398": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "399": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "400": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "401": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "402": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "403": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "404": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "405": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "406": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "407": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "274": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2010-10-05"
+        ],
+        "408": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2009-11-03"
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": [
+              "REF",
+              274
+            ],
+            "d2": [
+              "REF",
+              408
+            ],
+            "d3": [
+              "REF",
+              542
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              421
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              422
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              423
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              424
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              425
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              426
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              427
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              428
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              429
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              430
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              431
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              432
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              433
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              434
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              435
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              436
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              437
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              438
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              439
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              440
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              441
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              442
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              443
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              444
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              445
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              446
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              447
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              448
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              449
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              450
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              451
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              452
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              453
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              454
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              455
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              456
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              457
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              458
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              459
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              460
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              461
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              462
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              463
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              464
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              465
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              466
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              467
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              468
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              469
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              470
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              471
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              472
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              473
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              474
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              475
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              476
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              477
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              478
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              479
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              480
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              481
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              482
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              483
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              484
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              485
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              486
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              487
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              488
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              489
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              490
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              491
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              492
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              493
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              494
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              495
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              496
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              497
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              498
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              499
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              500
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              501
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              502
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              503
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              504
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              505
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              506
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              507
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              508
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              509
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              510
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              511
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              512
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              513
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              514
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              515
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              516
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              517
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              518
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              519
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              520
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              521
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              522
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              523
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              524
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              525
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              526
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              527
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              528
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              529
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              530
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              531
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              409
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              410
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              411
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              412
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              413
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              414
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              415
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              416
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              417
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              418
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              419
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              420
+            ]
+          ]
+        ],
+        "409": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "410": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "411": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "412": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "413": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "414": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "415": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "416": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "417": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "418": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "419": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "420": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "421": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "422": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "423": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "424": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "425": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "426": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "427": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "428": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "429": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "430": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "431": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "432": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "433": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "434": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "435": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "436": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "437": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "438": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "439": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "440": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "441": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "442": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "443": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "444": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "445": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "446": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "447": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "448": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "449": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "450": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "451": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "452": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "453": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "454": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "455": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "456": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "457": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "458": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "459": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "460": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "461": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "462": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "463": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "464": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "465": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "466": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "467": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "468": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "469": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "470": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "471": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "472": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "473": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "474": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "475": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "476": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "477": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "478": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "479": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "480": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "481": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "482": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "483": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "484": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "485": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "486": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "487": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "488": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "489": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "490": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "491": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "492": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "493": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "494": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "495": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "496": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "497": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "498": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "499": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "500": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "501": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "502": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "503": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "504": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "505": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "506": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "507": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "508": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "509": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "510": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "511": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "512": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "513": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "514": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "515": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "516": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "517": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "518": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "519": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "520": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "521": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "522": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "523": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "524": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "525": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "526": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "527": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "528": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "529": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "530": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "531": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              532
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              533
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              534
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              535
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              536
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              537
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              538
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              539
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              540
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              541
+            ]
+          ]
+        ],
+        "532": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "533": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "534": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "535": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "536": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "537": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "538": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "539": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "540": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "541": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "274": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2010-10-05"
+        ],
+        "408": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2009-11-03"
+        ],
+        "542": [
+          "INSTANCE_PPRINT",
+          "Rational",
+          "336/1"
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "2010-10-05\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": [
+              "REF",
+              274
+            ],
+            "d2": [
+              "REF",
+              408
+            ],
+            "d3": [
+              "REF",
+              542
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              555
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              556
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              557
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              558
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              559
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              560
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              561
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              562
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              563
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              564
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              565
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              566
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              567
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              568
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              569
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              570
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              571
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              572
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              573
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              574
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              575
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              576
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              577
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              578
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              579
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              580
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              581
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              582
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              583
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              584
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              585
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              586
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              587
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              588
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              589
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              590
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              591
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              592
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              593
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              594
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              595
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              596
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              597
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              598
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              599
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              600
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              601
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              602
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              603
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              604
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              605
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              606
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              607
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              608
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              609
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              610
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              611
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              612
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              613
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              614
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              615
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              616
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              617
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              618
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              619
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              620
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              621
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              622
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              623
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              624
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              625
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              626
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              627
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              628
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              629
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              630
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              631
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              632
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              633
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              634
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              635
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              636
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              637
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              638
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              639
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              640
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              641
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              642
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              643
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              644
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              645
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              646
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              647
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              648
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              649
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              650
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              651
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              652
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              653
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              654
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              655
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              656
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              657
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              658
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              659
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              660
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              661
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              662
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              663
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              664
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              665
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              543
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              544
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              545
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              546
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              547
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              548
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              549
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              550
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              551
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              552
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              553
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              554
+            ]
+          ]
+        ],
+        "543": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "544": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "545": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "546": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "547": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "548": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "549": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "550": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "551": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "552": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "553": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "554": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "555": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "556": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "557": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "558": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "559": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "560": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "561": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "562": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "563": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "564": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "565": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "566": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "567": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "568": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "569": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "570": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "571": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "572": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "573": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "574": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "575": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "576": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "577": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "578": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "579": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "580": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "581": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "582": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "583": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "584": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "585": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "586": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "587": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "588": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "589": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "590": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "591": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "592": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "593": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "594": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "595": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "596": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "597": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "598": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "599": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "600": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "601": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "602": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "603": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "604": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "605": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "606": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "607": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "608": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "609": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "610": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "611": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "612": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "613": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "614": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "615": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "616": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "617": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "618": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "619": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "620": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "621": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "622": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "623": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "624": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "625": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "626": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "627": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "628": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "629": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "630": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "631": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "632": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "633": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "634": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "635": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "636": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "637": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "638": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "639": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "640": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "641": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "642": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "643": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "644": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "645": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "646": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "647": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "648": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "649": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "650": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "651": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "652": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "653": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "654": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "655": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "656": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "657": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "658": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "659": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "660": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "661": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "662": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "663": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "664": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "665": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              666
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              667
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              668
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              669
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              670
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              671
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              672
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              673
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              674
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              675
+            ]
+          ]
+        ],
+        "666": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "667": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "668": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "669": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "670": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "671": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "672": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "673": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "674": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "675": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "274": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2010-10-05"
+        ],
+        "408": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2009-11-03"
+        ],
+        "542": [
+          "INSTANCE_PPRINT",
+          "Rational",
+          "336/1"
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "2010-10-05\n2009-11-03\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": [
+              "REF",
+              274
+            ],
+            "d2": [
+              "REF",
+              408
+            ],
+            "d3": [
+              "REF",
+              542
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              688
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              689
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              690
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              691
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              692
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              693
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              694
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              695
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              696
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              697
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              698
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              699
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              700
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              701
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              702
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              703
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              704
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              705
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              706
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              707
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              708
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              709
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              710
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              711
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              712
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              713
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              714
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              715
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              716
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              717
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              718
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              719
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              720
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              721
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              722
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              723
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              724
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              725
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              726
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              727
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              728
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              729
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              730
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              731
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              732
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              733
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              734
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              735
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              736
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              737
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              738
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              739
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              740
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              741
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              742
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              743
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              744
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              745
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              746
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              747
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              748
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              749
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              750
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              751
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              752
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              753
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              754
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              755
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              756
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              757
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              758
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              759
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              760
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              761
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              762
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              763
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              764
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              765
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              766
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              767
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              768
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              769
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              770
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              771
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              772
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              773
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              774
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              775
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              776
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              777
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              778
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              779
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              780
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              781
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              782
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              783
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              784
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              785
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              786
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              787
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              788
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              789
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              790
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              791
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              792
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              793
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              794
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              795
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              796
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              797
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              798
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              676
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              677
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              678
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              679
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              680
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              681
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              682
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              683
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              684
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              685
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              686
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              687
+            ]
+          ]
+        ],
+        "676": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "677": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "678": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "679": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "680": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "681": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "682": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "683": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "684": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "685": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "686": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "687": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "688": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "689": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "690": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "691": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "692": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "693": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "694": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "695": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "696": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "697": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "698": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "699": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "700": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "701": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "702": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "703": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "704": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "705": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "706": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "707": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "708": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "709": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "710": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "711": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "712": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "713": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "714": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "715": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "716": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "717": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "718": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "719": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "720": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "721": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "722": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "723": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "724": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "725": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "726": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "727": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "728": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "729": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "730": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "731": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "732": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "733": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "734": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "735": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "736": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "737": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "738": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "739": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "740": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "741": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "742": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "743": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "744": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "745": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "746": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "747": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "748": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "749": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "750": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "751": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "752": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "753": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "754": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "755": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "756": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "757": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "758": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "759": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "760": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "761": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "762": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "763": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "764": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "765": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "766": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "767": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "768": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "769": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "770": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "771": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "772": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "773": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "774": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "775": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "776": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "777": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "778": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "779": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "780": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "781": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "782": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "783": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "784": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "785": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "786": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "787": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "788": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "789": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "790": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "791": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "792": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "793": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "794": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "795": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "796": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "797": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "798": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              799
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              800
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              801
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              802
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              803
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              804
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              805
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              806
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              807
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              808
+            ]
+          ]
+        ],
+        "799": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "800": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "801": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "802": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "803": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "804": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "805": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "806": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "807": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "808": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "274": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2010-10-05"
+        ],
+        "408": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2009-11-03"
+        ],
+        "542": [
+          "INSTANCE_PPRINT",
+          "Rational",
+          "336/1"
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "2010-10-05\n2009-11-03\n336/1\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "d1",
+            "d2",
+            "d3"
+          ],
+          "encoded_locals": {
+            "d1": [
+              "REF",
+              274
+            ],
+            "d2": [
+              "REF",
+              408
+            ],
+            "d3": [
+              "REF",
+              542
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "Date",
+          [
+
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.valid_jd?",
+            [
+              "REF",
+              821
+            ]
+          ],
+          [
+            "self.valid_ordinal?",
+            [
+              "REF",
+              822
+            ]
+          ],
+          [
+            "self.valid_civil?",
+            [
+              "REF",
+              823
+            ]
+          ],
+          [
+            "self.valid_date?",
+            [
+              "REF",
+              824
+            ]
+          ],
+          [
+            "self.valid_commercial?",
+            [
+              "REF",
+              825
+            ]
+          ],
+          [
+            "self.julian_leap?",
+            [
+              "REF",
+              826
+            ]
+          ],
+          [
+            "self.gregorian_leap?",
+            [
+              "REF",
+              827
+            ]
+          ],
+          [
+            "self.leap?",
+            [
+              "REF",
+              828
+            ]
+          ],
+          [
+            "self.jd",
+            [
+              "REF",
+              829
+            ]
+          ],
+          [
+            "self.ordinal",
+            [
+              "REF",
+              830
+            ]
+          ],
+          [
+            "self.civil",
+            [
+              "REF",
+              831
+            ]
+          ],
+          [
+            "self.commercial",
+            [
+              "REF",
+              832
+            ]
+          ],
+          [
+            "self.today",
+            [
+              "REF",
+              833
+            ]
+          ],
+          [
+            "self._strptime",
+            [
+              "REF",
+              834
+            ]
+          ],
+          [
+            "self.strptime",
+            [
+              "REF",
+              835
+            ]
+          ],
+          [
+            "self._parse",
+            [
+              "REF",
+              836
+            ]
+          ],
+          [
+            "self.parse",
+            [
+              "REF",
+              837
+            ]
+          ],
+          [
+            "self._iso8601",
+            [
+              "REF",
+              838
+            ]
+          ],
+          [
+            "self.iso8601",
+            [
+              "REF",
+              839
+            ]
+          ],
+          [
+            "self._rfc3339",
+            [
+              "REF",
+              840
+            ]
+          ],
+          [
+            "self.rfc3339",
+            [
+              "REF",
+              841
+            ]
+          ],
+          [
+            "self._xmlschema",
+            [
+              "REF",
+              842
+            ]
+          ],
+          [
+            "self.xmlschema",
+            [
+              "REF",
+              843
+            ]
+          ],
+          [
+            "self._rfc2822",
+            [
+              "REF",
+              844
+            ]
+          ],
+          [
+            "self._rfc822",
+            [
+              "REF",
+              845
+            ]
+          ],
+          [
+            "self.rfc2822",
+            [
+              "REF",
+              846
+            ]
+          ],
+          [
+            "self.rfc822",
+            [
+              "REF",
+              847
+            ]
+          ],
+          [
+            "self._httpdate",
+            [
+              "REF",
+              848
+            ]
+          ],
+          [
+            "self.httpdate",
+            [
+              "REF",
+              849
+            ]
+          ],
+          [
+            "self._jisx0301",
+            [
+              "REF",
+              850
+            ]
+          ],
+          [
+            "self.jisx0301",
+            [
+              "REF",
+              851
+            ]
+          ],
+          [
+            "self._load",
+            [
+              "REF",
+              852
+            ]
+          ],
+          [
+            "ajd",
+            [
+              "REF",
+              853
+            ]
+          ],
+          [
+            "amjd",
+            [
+              "REF",
+              854
+            ]
+          ],
+          [
+            "jd",
+            [
+              "REF",
+              855
+            ]
+          ],
+          [
+            "mjd",
+            [
+              "REF",
+              856
+            ]
+          ],
+          [
+            "ld",
+            [
+              "REF",
+              857
+            ]
+          ],
+          [
+            "year",
+            [
+              "REF",
+              858
+            ]
+          ],
+          [
+            "yday",
+            [
+              "REF",
+              859
+            ]
+          ],
+          [
+            "mon",
+            [
+              "REF",
+              860
+            ]
+          ],
+          [
+            "month",
+            [
+              "REF",
+              861
+            ]
+          ],
+          [
+            "mday",
+            [
+              "REF",
+              862
+            ]
+          ],
+          [
+            "day",
+            [
+              "REF",
+              863
+            ]
+          ],
+          [
+            "day_fraction",
+            [
+              "REF",
+              864
+            ]
+          ],
+          [
+            "cwyear",
+            [
+              "REF",
+              865
+            ]
+          ],
+          [
+            "cweek",
+            [
+              "REF",
+              866
+            ]
+          ],
+          [
+            "cwday",
+            [
+              "REF",
+              867
+            ]
+          ],
+          [
+            "wday",
+            [
+              "REF",
+              868
+            ]
+          ],
+          [
+            "sunday?",
+            [
+              "REF",
+              869
+            ]
+          ],
+          [
+            "monday?",
+            [
+              "REF",
+              870
+            ]
+          ],
+          [
+            "tuesday?",
+            [
+              "REF",
+              871
+            ]
+          ],
+          [
+            "wednesday?",
+            [
+              "REF",
+              872
+            ]
+          ],
+          [
+            "thursday?",
+            [
+              "REF",
+              873
+            ]
+          ],
+          [
+            "friday?",
+            [
+              "REF",
+              874
+            ]
+          ],
+          [
+            "saturday?",
+            [
+              "REF",
+              875
+            ]
+          ],
+          [
+            "julian?",
+            [
+              "REF",
+              876
+            ]
+          ],
+          [
+            "gregorian?",
+            [
+              "REF",
+              877
+            ]
+          ],
+          [
+            "leap?",
+            [
+              "REF",
+              878
+            ]
+          ],
+          [
+            "start",
+            [
+              "REF",
+              879
+            ]
+          ],
+          [
+            "new_start",
+            [
+              "REF",
+              880
+            ]
+          ],
+          [
+            "italy",
+            [
+              "REF",
+              881
+            ]
+          ],
+          [
+            "england",
+            [
+              "REF",
+              882
+            ]
+          ],
+          [
+            "julian",
+            [
+              "REF",
+              883
+            ]
+          ],
+          [
+            "gregorian",
+            [
+              "REF",
+              884
+            ]
+          ],
+          [
+            "+",
+            [
+              "REF",
+              885
+            ]
+          ],
+          [
+            "-",
+            [
+              "REF",
+              886
+            ]
+          ],
+          [
+            "next_day",
+            [
+              "REF",
+              887
+            ]
+          ],
+          [
+            "prev_day",
+            [
+              "REF",
+              888
+            ]
+          ],
+          [
+            "next",
+            [
+              "REF",
+              889
+            ]
+          ],
+          [
+            "succ",
+            [
+              "REF",
+              890
+            ]
+          ],
+          [
+            ">>",
+            [
+              "REF",
+              891
+            ]
+          ],
+          [
+            "<<",
+            [
+              "REF",
+              892
+            ]
+          ],
+          [
+            "next_month",
+            [
+              "REF",
+              893
+            ]
+          ],
+          [
+            "prev_month",
+            [
+              "REF",
+              894
+            ]
+          ],
+          [
+            "next_year",
+            [
+              "REF",
+              895
+            ]
+          ],
+          [
+            "prev_year",
+            [
+              "REF",
+              896
+            ]
+          ],
+          [
+            "step",
+            [
+              "REF",
+              897
+            ]
+          ],
+          [
+            "upto",
+            [
+              "REF",
+              898
+            ]
+          ],
+          [
+            "downto",
+            [
+              "REF",
+              899
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              900
+            ]
+          ],
+          [
+            "===",
+            [
+              "REF",
+              901
+            ]
+          ],
+          [
+            "eql?",
+            [
+              "REF",
+              902
+            ]
+          ],
+          [
+            "hash",
+            [
+              "REF",
+              903
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              904
+            ]
+          ],
+          [
+            "inspect",
+            [
+              "REF",
+              905
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              906
+            ]
+          ],
+          [
+            "asctime",
+            [
+              "REF",
+              907
+            ]
+          ],
+          [
+            "ctime",
+            [
+              "REF",
+              908
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              909
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              910
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              911
+            ]
+          ],
+          [
+            "rfc2822",
+            [
+              "REF",
+              912
+            ]
+          ],
+          [
+            "rfc822",
+            [
+              "REF",
+              913
+            ]
+          ],
+          [
+            "httpdate",
+            [
+              "REF",
+              914
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              915
+            ]
+          ],
+          [
+            "marshal_dump",
+            [
+              "REF",
+              916
+            ]
+          ],
+          [
+            "marshal_load",
+            [
+              "REF",
+              917
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              918
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              919
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              920
+            ]
+          ],
+          [
+            "initialize_copy [private]",
+            [
+              "REF",
+              921
+            ]
+          ],
+          [
+            "hour [private]",
+            [
+              "REF",
+              922
+            ]
+          ],
+          [
+            "min [private]",
+            [
+              "REF",
+              923
+            ]
+          ],
+          [
+            "minute [private]",
+            [
+              "REF",
+              924
+            ]
+          ],
+          [
+            "sec [private]",
+            [
+              "REF",
+              925
+            ]
+          ],
+          [
+            "second [private]",
+            [
+              "REF",
+              926
+            ]
+          ],
+          [
+            "sec_fraction [private]",
+            [
+              "REF",
+              927
+            ]
+          ],
+          [
+            "second_fraction [private]",
+            [
+              "REF",
+              928
+            ]
+          ],
+          [
+            "offset [private]",
+            [
+              "REF",
+              929
+            ]
+          ],
+          [
+            "zone [private]",
+            [
+              "REF",
+              930
+            ]
+          ],
+          [
+            "new_offset [private]",
+            [
+              "REF",
+              931
+            ]
+          ]
+        ],
+        "2": [
+          "LIST",
+          null,
+          "January",
+          "February",
+          "March",
+          "April",
+          "May",
+          "June",
+          "July",
+          "August",
+          "September",
+          "October",
+          "November",
+          "December"
+        ],
+        "3": [
+          "LIST",
+          null,
+          "Jan",
+          "Feb",
+          "Mar",
+          "Apr",
+          "May",
+          "Jun",
+          "Jul",
+          "Aug",
+          "Sep",
+          "Oct",
+          "Nov",
+          "Dec"
+        ],
+        "4": [
+          "LIST",
+          "Sunday",
+          "Monday",
+          "Tuesday",
+          "Wednesday",
+          "Thursday",
+          "Friday",
+          "Saturday"
+        ],
+        "5": [
+          "LIST",
+          "Sun",
+          "Mon",
+          "Tue",
+          "Wed",
+          "Thu",
+          "Fri",
+          "Sat"
+        ],
+        "6": [
+          "CLASS",
+          "Date::Infinity",
+          [
+            "Numeric"
+          ],
+          [
+            "zero?",
+            [
+              "REF",
+              809
+            ]
+          ],
+          [
+            "finite?",
+            [
+              "REF",
+              810
+            ]
+          ],
+          [
+            "infinite?",
+            [
+              "REF",
+              811
+            ]
+          ],
+          [
+            "nan?",
+            [
+              "REF",
+              812
+            ]
+          ],
+          [
+            "abs",
+            [
+              "REF",
+              813
+            ]
+          ],
+          [
+            "-@",
+            [
+              "REF",
+              814
+            ]
+          ],
+          [
+            "+@",
+            [
+              "REF",
+              815
+            ]
+          ],
+          [
+            "<=>",
+            [
+              "REF",
+              816
+            ]
+          ],
+          [
+            "coerce",
+            [
+              "REF",
+              817
+            ]
+          ],
+          [
+            "to_f",
+            [
+              "REF",
+              818
+            ]
+          ],
+          [
+            "d [protected]",
+            [
+              "REF",
+              819
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              820
+            ]
+          ]
+        ],
+        "809": [
+          "FUNCTION",
+          "zero?",
+          ""
+        ],
+        "810": [
+          "FUNCTION",
+          "finite?",
+          ""
+        ],
+        "811": [
+          "FUNCTION",
+          "infinite?",
+          ""
+        ],
+        "812": [
+          "FUNCTION",
+          "nan?",
+          ""
+        ],
+        "813": [
+          "FUNCTION",
+          "abs",
+          ""
+        ],
+        "814": [
+          "FUNCTION",
+          "-@",
+          ""
+        ],
+        "815": [
+          "FUNCTION",
+          "+@",
+          ""
+        ],
+        "816": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "817": [
+          "FUNCTION",
+          "coerce",
+          ""
+        ],
+        "818": [
+          "FUNCTION",
+          "to_f",
+          ""
+        ],
+        "819": [
+          "FUNCTION",
+          "d",
+          ""
+        ],
+        "820": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "821": [
+          "FUNCTION",
+          "valid_jd?",
+          ""
+        ],
+        "822": [
+          "FUNCTION",
+          "valid_ordinal?",
+          ""
+        ],
+        "823": [
+          "FUNCTION",
+          "valid_civil?",
+          ""
+        ],
+        "824": [
+          "FUNCTION",
+          "valid_date?",
+          ""
+        ],
+        "825": [
+          "FUNCTION",
+          "valid_commercial?",
+          ""
+        ],
+        "826": [
+          "FUNCTION",
+          "julian_leap?",
+          ""
+        ],
+        "827": [
+          "FUNCTION",
+          "gregorian_leap?",
+          ""
+        ],
+        "828": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "829": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "830": [
+          "FUNCTION",
+          "ordinal",
+          ""
+        ],
+        "831": [
+          "FUNCTION",
+          "civil",
+          ""
+        ],
+        "832": [
+          "FUNCTION",
+          "commercial",
+          ""
+        ],
+        "833": [
+          "FUNCTION",
+          "today",
+          ""
+        ],
+        "834": [
+          "FUNCTION",
+          "_strptime",
+          ""
+        ],
+        "835": [
+          "FUNCTION",
+          "strptime",
+          ""
+        ],
+        "836": [
+          "FUNCTION",
+          "_parse",
+          ""
+        ],
+        "837": [
+          "FUNCTION",
+          "parse",
+          ""
+        ],
+        "838": [
+          "FUNCTION",
+          "_iso8601",
+          ""
+        ],
+        "839": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "840": [
+          "FUNCTION",
+          "_rfc3339",
+          ""
+        ],
+        "841": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "842": [
+          "FUNCTION",
+          "_xmlschema",
+          ""
+        ],
+        "843": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "844": [
+          "FUNCTION",
+          "_rfc2822",
+          ""
+        ],
+        "845": [
+          "FUNCTION",
+          "_rfc822",
+          ""
+        ],
+        "846": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "847": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "848": [
+          "FUNCTION",
+          "_httpdate",
+          ""
+        ],
+        "849": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "850": [
+          "FUNCTION",
+          "_jisx0301",
+          ""
+        ],
+        "851": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "852": [
+          "FUNCTION",
+          "_load",
+          ""
+        ],
+        "853": [
+          "FUNCTION",
+          "ajd",
+          ""
+        ],
+        "854": [
+          "FUNCTION",
+          "amjd",
+          ""
+        ],
+        "855": [
+          "FUNCTION",
+          "jd",
+          ""
+        ],
+        "856": [
+          "FUNCTION",
+          "mjd",
+          ""
+        ],
+        "857": [
+          "FUNCTION",
+          "ld",
+          ""
+        ],
+        "858": [
+          "FUNCTION",
+          "year",
+          ""
+        ],
+        "859": [
+          "FUNCTION",
+          "yday",
+          ""
+        ],
+        "860": [
+          "FUNCTION",
+          "mon",
+          ""
+        ],
+        "861": [
+          "FUNCTION",
+          "month",
+          ""
+        ],
+        "862": [
+          "FUNCTION",
+          "mday",
+          ""
+        ],
+        "863": [
+          "FUNCTION",
+          "day",
+          ""
+        ],
+        "864": [
+          "FUNCTION",
+          "day_fraction",
+          ""
+        ],
+        "865": [
+          "FUNCTION",
+          "cwyear",
+          ""
+        ],
+        "866": [
+          "FUNCTION",
+          "cweek",
+          ""
+        ],
+        "867": [
+          "FUNCTION",
+          "cwday",
+          ""
+        ],
+        "868": [
+          "FUNCTION",
+          "wday",
+          ""
+        ],
+        "869": [
+          "FUNCTION",
+          "sunday?",
+          ""
+        ],
+        "870": [
+          "FUNCTION",
+          "monday?",
+          ""
+        ],
+        "871": [
+          "FUNCTION",
+          "tuesday?",
+          ""
+        ],
+        "872": [
+          "FUNCTION",
+          "wednesday?",
+          ""
+        ],
+        "873": [
+          "FUNCTION",
+          "thursday?",
+          ""
+        ],
+        "874": [
+          "FUNCTION",
+          "friday?",
+          ""
+        ],
+        "875": [
+          "FUNCTION",
+          "saturday?",
+          ""
+        ],
+        "876": [
+          "FUNCTION",
+          "julian?",
+          ""
+        ],
+        "877": [
+          "FUNCTION",
+          "gregorian?",
+          ""
+        ],
+        "878": [
+          "FUNCTION",
+          "leap?",
+          ""
+        ],
+        "879": [
+          "FUNCTION",
+          "start",
+          ""
+        ],
+        "880": [
+          "FUNCTION",
+          "new_start",
+          ""
+        ],
+        "881": [
+          "FUNCTION",
+          "italy",
+          ""
+        ],
+        "882": [
+          "FUNCTION",
+          "england",
+          ""
+        ],
+        "883": [
+          "FUNCTION",
+          "julian",
+          ""
+        ],
+        "884": [
+          "FUNCTION",
+          "gregorian",
+          ""
+        ],
+        "885": [
+          "FUNCTION",
+          "+",
+          ""
+        ],
+        "886": [
+          "FUNCTION",
+          "-",
+          ""
+        ],
+        "887": [
+          "FUNCTION",
+          "next_day",
+          ""
+        ],
+        "888": [
+          "FUNCTION",
+          "prev_day",
+          ""
+        ],
+        "889": [
+          "FUNCTION",
+          "next",
+          ""
+        ],
+        "890": [
+          "FUNCTION",
+          "succ",
+          ""
+        ],
+        "891": [
+          "FUNCTION",
+          ">>",
+          ""
+        ],
+        "892": [
+          "FUNCTION",
+          "<<",
+          ""
+        ],
+        "893": [
+          "FUNCTION",
+          "next_month",
+          ""
+        ],
+        "894": [
+          "FUNCTION",
+          "prev_month",
+          ""
+        ],
+        "895": [
+          "FUNCTION",
+          "next_year",
+          ""
+        ],
+        "896": [
+          "FUNCTION",
+          "prev_year",
+          ""
+        ],
+        "897": [
+          "FUNCTION",
+          "step",
+          ""
+        ],
+        "898": [
+          "FUNCTION",
+          "upto",
+          ""
+        ],
+        "899": [
+          "FUNCTION",
+          "downto",
+          ""
+        ],
+        "900": [
+          "FUNCTION",
+          "<=>",
+          ""
+        ],
+        "901": [
+          "FUNCTION",
+          "===",
+          ""
+        ],
+        "902": [
+          "FUNCTION",
+          "eql?",
+          ""
+        ],
+        "903": [
+          "FUNCTION",
+          "hash",
+          ""
+        ],
+        "904": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "905": [
+          "FUNCTION",
+          "inspect",
+          ""
+        ],
+        "906": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "907": [
+          "FUNCTION",
+          "asctime",
+          ""
+        ],
+        "908": [
+          "FUNCTION",
+          "ctime",
+          ""
+        ],
+        "909": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "910": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "911": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "912": [
+          "FUNCTION",
+          "rfc2822",
+          ""
+        ],
+        "913": [
+          "FUNCTION",
+          "rfc822",
+          ""
+        ],
+        "914": [
+          "FUNCTION",
+          "httpdate",
+          ""
+        ],
+        "915": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "916": [
+          "FUNCTION",
+          "marshal_dump",
+          ""
+        ],
+        "917": [
+          "FUNCTION",
+          "marshal_load",
+          ""
+        ],
+        "918": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "919": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "920": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "921": [
+          "FUNCTION",
+          "initialize_copy",
+          ""
+        ],
+        "922": [
+          "FUNCTION",
+          "hour",
+          ""
+        ],
+        "923": [
+          "FUNCTION",
+          "min",
+          ""
+        ],
+        "924": [
+          "FUNCTION",
+          "minute",
+          ""
+        ],
+        "925": [
+          "FUNCTION",
+          "sec",
+          ""
+        ],
+        "926": [
+          "FUNCTION",
+          "second",
+          ""
+        ],
+        "927": [
+          "FUNCTION",
+          "sec_fraction",
+          ""
+        ],
+        "928": [
+          "FUNCTION",
+          "second_fraction",
+          ""
+        ],
+        "929": [
+          "FUNCTION",
+          "offset",
+          ""
+        ],
+        "930": [
+          "FUNCTION",
+          "zone",
+          ""
+        ],
+        "931": [
+          "FUNCTION",
+          "new_offset",
+          ""
+        ],
+        "130": [
+          "CLASS",
+          "DateTime",
+          [
+            "Date"
+          ],
+          [
+            "MONTHNAMES",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "ABBR_MONTHNAMES",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "DAYNAMES",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "ABBR_DAYNAMES",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "ITALY",
+            2299161
+          ],
+          [
+            "ENGLAND",
+            2361222
+          ],
+          [
+            "JULIAN",
+            [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ]
+          ],
+          [
+            "GREGORIAN",
+            [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ]
+          ],
+          [
+            "Infinity",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "self.now",
+            [
+              "REF",
+              932
+            ]
+          ],
+          [
+            "to_s",
+            [
+              "REF",
+              933
+            ]
+          ],
+          [
+            "strftime",
+            [
+              "REF",
+              934
+            ]
+          ],
+          [
+            "iso8601",
+            [
+              "REF",
+              935
+            ]
+          ],
+          [
+            "xmlschema",
+            [
+              "REF",
+              936
+            ]
+          ],
+          [
+            "rfc3339",
+            [
+              "REF",
+              937
+            ]
+          ],
+          [
+            "jisx0301",
+            [
+              "REF",
+              938
+            ]
+          ],
+          [
+            "to_time",
+            [
+              "REF",
+              939
+            ]
+          ],
+          [
+            "to_date",
+            [
+              "REF",
+              940
+            ]
+          ],
+          [
+            "to_datetime",
+            [
+              "REF",
+              941
+            ]
+          ]
+        ],
+        "932": [
+          "FUNCTION",
+          "now",
+          ""
+        ],
+        "933": [
+          "FUNCTION",
+          "to_s",
+          ""
+        ],
+        "934": [
+          "FUNCTION",
+          "strftime",
+          ""
+        ],
+        "935": [
+          "FUNCTION",
+          "iso8601",
+          ""
+        ],
+        "936": [
+          "FUNCTION",
+          "xmlschema",
+          ""
+        ],
+        "937": [
+          "FUNCTION",
+          "rfc3339",
+          ""
+        ],
+        "938": [
+          "FUNCTION",
+          "jisx0301",
+          ""
+        ],
+        "939": [
+          "FUNCTION",
+          "to_time",
+          ""
+        ],
+        "940": [
+          "FUNCTION",
+          "to_date",
+          ""
+        ],
+        "941": [
+          "FUNCTION",
+          "to_datetime",
+          ""
+        ],
+        "274": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2010-10-05"
+        ],
+        "408": [
+          "INSTANCE_PPRINT",
+          "Date",
+          "2009-11-03"
+        ],
+        "542": [
+          "INSTANCE_PPRINT",
+          "Rational",
+          "336/1"
+        ]
+      },
+      "globals": {
+        "Date": [
+          "REF",
+          1
+        ],
+        "DateTime": [
+          "REF",
+          130
+        ]
+      },
+      "ordered_globals": [
+        "Date",
+        "DateTime"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/dates.rb b/v4-cokapi/backends/ruby/tests/dates.rb
new file mode 100644
index 000000000..3b8bc5804
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/dates.rb
@@ -0,0 +1,8 @@
+require 'date'
+
+d1 = Date.new(2010, 10, 5)
+d2 = Date.new(2009, 11, 3)
+d3 = d1 - d2
+puts d1
+puts d2
+puts d3
diff --git a/v4-cokapi/backends/ruby/tests/exception-basic.golden b/v4-cokapi/backends/ruby/tests/exception-basic.golden
new file mode 100644
index 000000000..3af6379a2
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/exception-basic.golden
@@ -0,0 +1,150 @@
+{
+  "code": "x = 10\ny = 0\nz = x / y\nputs z\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null,
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": 10,
+            "y": null,
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": 10,
+            "y": 0,
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "exception",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": 10,
+            "y": 0,
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ],
+      "exception_msg": "divided by 0"
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/exception-basic.rb b/v4-cokapi/backends/ruby/tests/exception-basic.rb
new file mode 100644
index 000000000..e29e8f390
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/exception-basic.rb
@@ -0,0 +1,4 @@
+x = 10
+y = 0
+z = x / y
+puts z
diff --git a/v4-cokapi/backends/ruby/tests/floats.golden b/v4-cokapi/backends/ruby/tests/floats.golden
new file mode 100644
index 000000000..a6426e0a2
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/floats.golden
@@ -0,0 +1,332 @@
+{
+  "code": "x = 2.5\ny = 2.0 # display as a SPECIAL_FLOAT\nz = 2\ninf = Float::INFINITY\nneg_inf = -1 * inf\ngarlic_naan = Float::NAN\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null,
+            "z": null,
+            "inf": null,
+            "neg_inf": null,
+            "garlic_naan": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": 2.5,
+            "y": null,
+            "z": null,
+            "inf": null,
+            "neg_inf": null,
+            "garlic_naan": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": 2.5,
+            "y": [
+              "SPECIAL_FLOAT",
+              "2.0"
+            ],
+            "z": null,
+            "inf": null,
+            "neg_inf": null,
+            "garlic_naan": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": 2.5,
+            "y": [
+              "SPECIAL_FLOAT",
+              "2.0"
+            ],
+            "z": 2,
+            "inf": null,
+            "neg_inf": null,
+            "garlic_naan": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": 2.5,
+            "y": [
+              "SPECIAL_FLOAT",
+              "2.0"
+            ],
+            "z": 2,
+            "inf": [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ],
+            "neg_inf": null,
+            "garlic_naan": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": 2.5,
+            "y": [
+              "SPECIAL_FLOAT",
+              "2.0"
+            ],
+            "z": 2,
+            "inf": [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ],
+            "neg_inf": [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ],
+            "garlic_naan": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z",
+            "inf",
+            "neg_inf",
+            "garlic_naan"
+          ],
+          "encoded_locals": {
+            "x": 2.5,
+            "y": [
+              "SPECIAL_FLOAT",
+              "2.0"
+            ],
+            "z": 2,
+            "inf": [
+              "SPECIAL_FLOAT",
+              "Infinity"
+            ],
+            "neg_inf": [
+              "SPECIAL_FLOAT",
+              "-Infinity"
+            ],
+            "garlic_naan": [
+              "SPECIAL_FLOAT",
+              "NaN"
+            ]
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/floats.rb b/v4-cokapi/backends/ruby/tests/floats.rb
new file mode 100644
index 000000000..fc96e4e1e
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/floats.rb
@@ -0,0 +1,6 @@
+x = 2.5
+y = 2.0 # display as a SPECIAL_FLOAT
+z = 2
+inf = Float::INFINITY
+neg_inf = -1 * inf
+garlic_naan = Float::NAN
diff --git a/v4-cokapi/backends/ruby/tests/global-mutate.golden b/v4-cokapi/backends/ruby/tests/global-mutate.golden
new file mode 100644
index 000000000..ec0bd1fa7
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/global-mutate.golden
@@ -0,0 +1,301 @@
+{
+  "code": "$globalX = 'I am a global!'\n$globalX << '---'\n$globalX << 'yeah'\nputs $globalX\n\nCONSTANT_X = 'I am a constant!'\nCONSTANT_X << '---'\nCONSTANT_X << 'yeah'\nputs CONSTANT_X\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": null
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!"
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---"
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---yeah"
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "I am a global!---yeah\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---yeah"
+      },
+      "ordered_globals": [
+        "$globalX"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "I am a global!---yeah\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---yeah",
+        "CONSTANT_X": "I am a constant!"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "CONSTANT_X"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "I am a global!---yeah\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---yeah",
+        "CONSTANT_X": "I am a constant!---"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "CONSTANT_X"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "I am a global!---yeah\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---yeah",
+        "CONSTANT_X": "I am a constant!---yeah"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "CONSTANT_X"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "I am a global!---yeah\nI am a constant!---yeah\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!---yeah",
+        "CONSTANT_X": "I am a constant!---yeah"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "CONSTANT_X"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/global-mutate.rb b/v4-cokapi/backends/ruby/tests/global-mutate.rb
new file mode 100644
index 000000000..4b507ba9b
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/global-mutate.rb
@@ -0,0 +1,9 @@
+$globalX = 'I am a global!'
+$globalX << '---'
+$globalX << 'yeah'
+puts $globalX
+
+CONSTANT_X = 'I am a constant!'
+CONSTANT_X << '---'
+CONSTANT_X << 'yeah'
+puts CONSTANT_X
diff --git a/v4-cokapi/backends/ruby/tests/globals.golden b/v4-cokapi/backends/ruby/tests/globals.golden
new file mode 100644
index 000000000..bc52df679
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/globals.golden
@@ -0,0 +1,592 @@
+{
+  "code": "$globalX = 'I am a global!'\n$globalY = 'I am another global!'\n\nlocalX = 'I am a local in <main>'\n\ndef foo\n  reallyLocalX = 'I am a local in foo'\n  puts reallyLocalX\n  $globalX << $globalY\nend\n\n$globalX << '---'\nfoo\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": null,
+        "$globalY": null
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!",
+        "$globalY": null
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!",
+        "$globalY": "I am another global!"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$globalX": "I am a global!",
+        "$globalY": "I am another global!"
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:6",
+          "frame_id": 2,
+          "unique_hash": "foo:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "reallyLocalX"
+          ],
+          "encoded_locals": {
+            "reallyLocalX": null
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:7",
+          "frame_id": 2,
+          "unique_hash": "foo:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "reallyLocalX"
+          ],
+          "encoded_locals": {
+            "reallyLocalX": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:8",
+          "frame_id": 2,
+          "unique_hash": "foo:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "reallyLocalX"
+          ],
+          "encoded_locals": {
+            "reallyLocalX": "I am a local in foo"
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "I am a local in foo\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:9",
+          "frame_id": 2,
+          "unique_hash": "foo:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "reallyLocalX"
+          ],
+          "encoded_locals": {
+            "reallyLocalX": "I am a local in foo"
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "I am a local in foo\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:10",
+          "frame_id": 2,
+          "unique_hash": "foo:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "reallyLocalX",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "reallyLocalX": "I am a local in foo",
+            "__return__": "I am a global!---I am another global!"
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---I am another global!",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "I am a local in foo\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX"
+          ],
+          "encoded_locals": {
+            "localX": "I am a local in <main>"
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "$globalX": "I am a global!---I am another global!",
+        "$globalY": "I am another global!",
+        "foo": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "$globalX",
+        "$globalY",
+        "foo"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/globals.rb b/v4-cokapi/backends/ruby/tests/globals.rb
new file mode 100644
index 000000000..440124018
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/globals.rb
@@ -0,0 +1,13 @@
+$globalX = 'I am a global!'
+$globalY = 'I am another global!'
+
+localX = 'I am a local in <main>'
+
+def foo
+  reallyLocalX = 'I am a local in foo'
+  puts reallyLocalX
+  $globalX << $globalY
+end
+
+$globalX << '---'
+foo
diff --git a/v4-cokapi/backends/ruby/tests/hello.golden b/v4-cokapi/backends/ruby/tests/hello.golden
new file mode 100644
index 000000000..a21123e3f
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/hello.golden
@@ -0,0 +1,185 @@
+{
+  "code": "x = \"Hello\"\ny = \"world\"\nz = x + \" \" + y\nputs z\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null,
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": "Hello",
+            "y": null,
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": "Hello",
+            "y": "world",
+            "z": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": "Hello",
+            "y": "world",
+            "z": "Hello world"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Hello world\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "z"
+          ],
+          "encoded_locals": {
+            "x": "Hello",
+            "y": "world",
+            "z": "Hello world"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/hello.rb b/v4-cokapi/backends/ruby/tests/hello.rb
new file mode 100644
index 000000000..e5ae4e446
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/hello.rb
@@ -0,0 +1,4 @@
+x = "Hello"
+y = "world"
+z = x + " " + y
+puts z
diff --git a/v4-cokapi/backends/ruby/tests/infinite-loop.golden b/v4-cokapi/backends/ruby/tests/infinite-loop.golden
new file mode 100644
index 000000000..b29bba45f
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/infinite-loop.golden
@@ -0,0 +1,9638 @@
+{
+  "code": "i = 3\nwhile true\n  i += 100\nend\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 6903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 7903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 9903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 10903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 11903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 12903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 13903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 14903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 15903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 16903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 17903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 18903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 19903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 20903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 21903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 22903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 23903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 24903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 25903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 26903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 27903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 28903
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29003
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29103
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29203
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29303
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29403
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29503
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29603
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29703
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "instruction_limit_reached",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 29803
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ],
+      "exception_msg": "(stopped after 300 steps to prevent possible infinite loop)"
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/infinite-loop.rb b/v4-cokapi/backends/ruby/tests/infinite-loop.rb
new file mode 100644
index 000000000..09038bb90
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/infinite-loop.rb
@@ -0,0 +1,4 @@
+i = 3
+while true
+  i += 100
+end
diff --git a/v4-cokapi/backends/ruby/tests/inst-class-vars-complex.golden b/v4-cokapi/backends/ruby/tests/inst-class-vars-complex.golden
new file mode 100644
index 000000000..323920129
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/inst-class-vars-complex.golden
@@ -0,0 +1,6310 @@
+{
+  "code": "# adapted from http://rubylearning.com/satishtalim/ruby_constants.html\n\n# p057mymethods2.rb  \n# variables and methods start lowercase  \n$glob = 5             # global variables start with $  \nclass TestVar         # class name constant, start uppercase  \n @@cla = 6            # class variables start with @@  \n CONST_VAL = 7        # constant style, all caps, underscore  \n def initialize(x)    # constructor  \n  @inst = x           # instance variables start with @  \n  @@cla += 1          # each object shares @@cla  \n end  \n def self.cla         # class method, getter  \n  @@cla  \n end  \n def self.cla=(y)     # class method, setter, also TestVar.  \n  @@cla = y  \n end  \n def inst             # instance method, getter  \n  @inst  \n end  \n def inst=(i)         # instance method, setter  \n  @inst = i  \n end  \nend  \nputs $glob  \ntest = TestVar.new(3) # calls constructor  \nputs TestVar.cla      # calls getter  \nputs test.inspect     # gives object ID and instance vars  \nTestVar.cla = 4       # calls setter  \ntest.inst=8           # calls setter  \nputs TestVar.cla  \nputs test.inst        # calls getter  \nother = TestVar.new(17)  \nputs other.inspect  \nputs TestVar.cla  \n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$glob": null
+      },
+      "ordered_globals": [
+        "$glob"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "$glob": 5
+      },
+      "ordered_globals": [
+        "$glob"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:6",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:7",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:8",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:9",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:13",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:16",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              3
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "4": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:19",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              6
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              7
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "5": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "6": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "7": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:22",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:22_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              8
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              9
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              10
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              11
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "8": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "10": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 25,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:TestVar>:25",
+          "frame_id": 2,
+          "unique_hash": "<class:TestVar>:25_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              12
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              13
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              14
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              15
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              16
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "12": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "14": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "15": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 26,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:26",
+          "frame_id": 1,
+          "unique_hash": "<main>:26_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              17
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              18
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              19
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              20
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              21
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "17": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "18": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "19": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "20": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 27,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:27",
+          "frame_id": 1,
+          "unique_hash": "<main>:27_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              22
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              23
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              24
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              25
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              26
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "22": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "24": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "26": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:27",
+          "frame_id": 1,
+          "unique_hash": "<main>:27_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:9",
+          "frame_id": 3,
+          "unique_hash": "initialize:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 3,
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              27
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              28
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              29
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              30
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              31
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "27": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "28": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "30": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar"
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:27",
+          "frame_id": 1,
+          "unique_hash": "<main>:27_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:10",
+          "frame_id": 3,
+          "unique_hash": "initialize:10_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 3,
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              33
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              34
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              35
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              36
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              37
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "33": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "34": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "36": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "37": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar"
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:27",
+          "frame_id": 1,
+          "unique_hash": "<main>:27_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:11",
+          "frame_id": 3,
+          "unique_hash": "initialize:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 3,
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              38
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              39
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              40
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              41
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              42
+            ]
+          ],
+          [
+            "@@cla",
+            6
+          ]
+        ],
+        "38": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "39": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "40": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "41": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "42": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:27",
+          "frame_id": 1,
+          "unique_hash": "<main>:27_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": null,
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:12",
+          "frame_id": 3,
+          "unique_hash": "initialize:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 3,
+            "self": [
+              "REF",
+              32
+            ],
+            "__return__": 7
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              43
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              44
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              45
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              46
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              47
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "43": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "44": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "45": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "46": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "47": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 28,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              48
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              49
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              50
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              51
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              52
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "48": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "49": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "50": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "51": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "52": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:13",
+          "frame_id": 2,
+          "unique_hash": "cla:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              53
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              54
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              55
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              56
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              57
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "53": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "54": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "55": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "56": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "57": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:14",
+          "frame_id": 2,
+          "unique_hash": "cla:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              58
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              59
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              60
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              61
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              62
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "58": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "59": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "60": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "61": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "62": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "return",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:15",
+          "frame_id": 2,
+          "unique_hash": "cla:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ],
+            "__return__": 7
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              63
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              64
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              65
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              66
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              67
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "63": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "64": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "65": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "66": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "67": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 29,
+      "event": "step_line",
+      "stdout": "5\n7\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              68
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              69
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              70
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              71
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              72
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "68": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "69": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "70": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "71": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "72": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 30,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:30",
+          "frame_id": 1,
+          "unique_hash": "<main>:30_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              73
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              74
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              75
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              76
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              77
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "73": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "74": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "75": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "76": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "77": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "call",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:30",
+          "frame_id": 1,
+          "unique_hash": "<main>:30_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla=:16",
+          "frame_id": 2,
+          "unique_hash": "cla=:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 4,
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              78
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              79
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              80
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              81
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              82
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "78": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "79": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "80": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "81": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "82": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:30",
+          "frame_id": 1,
+          "unique_hash": "<main>:30_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla=:17",
+          "frame_id": 2,
+          "unique_hash": "cla=:17_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "y"
+          ],
+          "encoded_locals": {
+            "y": 4,
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              83
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              84
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              85
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              86
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              87
+            ]
+          ],
+          [
+            "@@cla",
+            7
+          ]
+        ],
+        "83": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "84": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "85": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "86": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "87": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "return",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:30",
+          "frame_id": 1,
+          "unique_hash": "<main>:30_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla=:18",
+          "frame_id": 2,
+          "unique_hash": "cla=:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "y": 4,
+            "self": [
+              "REF",
+              1
+            ],
+            "__return__": 4
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              88
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              89
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              90
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              91
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              92
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "88": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "89": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "90": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "91": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "92": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 31,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:31",
+          "frame_id": 1,
+          "unique_hash": "<main>:31_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              93
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              94
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              95
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              96
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              97
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "93": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "94": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "95": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "96": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "97": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "call",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:31",
+          "frame_id": 1,
+          "unique_hash": "<main>:31_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "inst=:22",
+          "frame_id": 2,
+          "unique_hash": "inst=:22_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8,
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              98
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              99
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              100
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              101
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              102
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "98": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "99": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "100": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "101": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "102": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:31",
+          "frame_id": 1,
+          "unique_hash": "<main>:31_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "inst=:23",
+          "frame_id": 2,
+          "unique_hash": "inst=:23_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 8,
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              103
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              104
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              105
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              106
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              107
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "103": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "104": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "105": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "106": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "107": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            3
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "return",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:31",
+          "frame_id": 1,
+          "unique_hash": "<main>:31_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "inst=:24",
+          "frame_id": 2,
+          "unique_hash": "inst=:24_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "i": 8,
+            "self": [
+              "REF",
+              32
+            ],
+            "__return__": 8
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              108
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              109
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              110
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              111
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              112
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "108": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "109": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "110": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "111": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "112": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 32,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:32",
+          "frame_id": 1,
+          "unique_hash": "<main>:32_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              113
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              114
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              115
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              116
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              117
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "113": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "114": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "115": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "116": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "117": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:32",
+          "frame_id": 1,
+          "unique_hash": "<main>:32_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:13",
+          "frame_id": 2,
+          "unique_hash": "cla:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              118
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              119
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              120
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              121
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              122
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "118": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "119": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "120": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "121": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "122": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:32",
+          "frame_id": 1,
+          "unique_hash": "<main>:32_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:14",
+          "frame_id": 2,
+          "unique_hash": "cla:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              123
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              124
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              125
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              126
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              127
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "123": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "124": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "125": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "126": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "127": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "return",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:32",
+          "frame_id": 1,
+          "unique_hash": "<main>:32_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:15",
+          "frame_id": 2,
+          "unique_hash": "cla:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ],
+            "__return__": 4
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              128
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              129
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              130
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              131
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              132
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "128": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "129": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "130": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "131": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "132": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 33,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              133
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              134
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              135
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              136
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              137
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "133": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "134": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "135": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "136": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "137": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "call",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "inst:19",
+          "frame_id": 2,
+          "unique_hash": "inst:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              138
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              139
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              140
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              141
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              142
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "138": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "139": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "140": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "141": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "142": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "inst:20",
+          "frame_id": 2,
+          "unique_hash": "inst:20_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              32
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              143
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              144
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              145
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              146
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              147
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "143": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "144": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "145": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "146": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "147": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 21,
+      "event": "return",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "inst:21",
+          "frame_id": 2,
+          "unique_hash": "inst:21_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              32
+            ],
+            "__return__": 8
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              148
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              149
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              150
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              151
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              152
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "148": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "149": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "150": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "151": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "152": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 34,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:34",
+          "frame_id": 1,
+          "unique_hash": "<main>:34_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              153
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              154
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              155
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              156
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              157
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "153": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "154": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "155": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "156": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "157": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:34",
+          "frame_id": 1,
+          "unique_hash": "<main>:34_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:9",
+          "frame_id": 3,
+          "unique_hash": "initialize:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 17,
+            "self": [
+              "REF",
+              163
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              158
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              159
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              160
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              161
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              162
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "158": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "159": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "160": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "161": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "162": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar"
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:34",
+          "frame_id": 1,
+          "unique_hash": "<main>:34_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:10",
+          "frame_id": 3,
+          "unique_hash": "initialize:10_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 17,
+            "self": [
+              "REF",
+              163
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              164
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              165
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              166
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              9
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              167
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "164": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "165": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "166": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "167": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar"
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:34",
+          "frame_id": 1,
+          "unique_hash": "<main>:34_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:11",
+          "frame_id": 3,
+          "unique_hash": "initialize:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 17,
+            "self": [
+              "REF",
+              163
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              168
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              169
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              170
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              171
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              172
+            ]
+          ],
+          [
+            "@@cla",
+            4
+          ]
+        ],
+        "168": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "169": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "170": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "171": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "172": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:34",
+          "frame_id": 1,
+          "unique_hash": "<main>:34_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:12",
+          "frame_id": 3,
+          "unique_hash": "initialize:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "x",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 17,
+            "self": [
+              "REF",
+              163
+            ],
+            "__return__": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              173
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              174
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              175
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              176
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              177
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "173": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "174": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "175": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "176": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "177": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 35,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:35",
+          "frame_id": 1,
+          "unique_hash": "<main>:35_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": [
+              "REF",
+              163
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              178
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              179
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              180
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              181
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              182
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "178": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "179": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "180": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "181": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "182": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 36,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n#<TestVar:0x007ff30fd68b48 @inst=17>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:36",
+          "frame_id": 1,
+          "unique_hash": "<main>:36_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": [
+              "REF",
+              163
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              183
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              184
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              185
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              186
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              187
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "183": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "184": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "185": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "186": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "187": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n#<TestVar:0x007ff30fd68b48 @inst=17>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:36",
+          "frame_id": 1,
+          "unique_hash": "<main>:36_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": [
+              "REF",
+              163
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:13",
+          "frame_id": 2,
+          "unique_hash": "cla:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              188
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              189
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              190
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              191
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              192
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "188": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "189": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "190": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "191": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "192": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n#<TestVar:0x007ff30fd68b48 @inst=17>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:36",
+          "frame_id": 1,
+          "unique_hash": "<main>:36_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": [
+              "REF",
+              163
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:14",
+          "frame_id": 2,
+          "unique_hash": "cla:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              193
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              194
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              195
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              196
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              197
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "193": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "194": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "195": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "196": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "197": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "return",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n#<TestVar:0x007ff30fd68b48 @inst=17>\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:36",
+          "frame_id": 1,
+          "unique_hash": "<main>:36_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": [
+              "REF",
+              163
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "cla:15",
+          "frame_id": 2,
+          "unique_hash": "cla:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ],
+            "__return__": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              198
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              199
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              200
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              201
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              202
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "198": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "199": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "200": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "201": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "202": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 36,
+      "event": "step_line",
+      "stdout": "5\n7\n#<TestVar:0x007ff30fcb98c8 @inst=3>\n4\n8\n#<TestVar:0x007ff30fd68b48 @inst=17>\n5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:37",
+          "frame_id": 1,
+          "unique_hash": "<main>:37_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "test",
+            "other"
+          ],
+          "encoded_locals": {
+            "test": [
+              "REF",
+              32
+            ],
+            "other": [
+              "REF",
+              163
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "TestVar",
+          [
+
+          ],
+          [
+            "CONST_VAL",
+            7
+          ],
+          [
+            "self.cla",
+            [
+              "REF",
+              203
+            ]
+          ],
+          [
+            "self.cla=",
+            [
+              "REF",
+              204
+            ]
+          ],
+          [
+            "inst",
+            [
+              "REF",
+              205
+            ]
+          ],
+          [
+            "inst=",
+            [
+              "REF",
+              206
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              207
+            ]
+          ],
+          [
+            "@@cla",
+            5
+          ]
+        ],
+        "203": [
+          "FUNCTION",
+          "cla",
+          ""
+        ],
+        "204": [
+          "FUNCTION",
+          "cla=",
+          ""
+        ],
+        "205": [
+          "FUNCTION",
+          "inst",
+          ""
+        ],
+        "206": [
+          "FUNCTION",
+          "inst=",
+          ""
+        ],
+        "207": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "32": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            8
+          ]
+        ],
+        "163": [
+          "INSTANCE",
+          "TestVar",
+          [
+            "@inst",
+            17
+          ]
+        ]
+      },
+      "globals": {
+        "$glob": 5,
+        "TestVar": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "$glob",
+        "TestVar"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/inst-class-vars-complex.rb b/v4-cokapi/backends/ruby/tests/inst-class-vars-complex.rb
new file mode 100644
index 000000000..4f3e856a0
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/inst-class-vars-complex.rb
@@ -0,0 +1,36 @@
+# adapted from http://rubylearning.com/satishtalim/ruby_constants.html
+
+# p057mymethods2.rb  
+# variables and methods start lowercase  
+$glob = 5             # global variables start with $  
+class TestVar         # class name constant, start uppercase  
+ @@cla = 6            # class variables start with @@  
+ CONST_VAL = 7        # constant style, all caps, underscore  
+ def initialize(x)    # constructor  
+  @inst = x           # instance variables start with @  
+  @@cla += 1          # each object shares @@cla  
+ end  
+ def self.cla         # class method, getter  
+  @@cla  
+ end  
+ def self.cla=(y)     # class method, setter, also TestVar.  
+  @@cla = y  
+ end  
+ def inst             # instance method, getter  
+  @inst  
+ end  
+ def inst=(i)         # instance method, setter  
+  @inst = i  
+ end  
+end  
+puts $glob  
+test = TestVar.new(3) # calls constructor  
+puts TestVar.cla      # calls getter  
+puts test.inspect     # gives object ID and instance vars  
+TestVar.cla = 4       # calls setter  
+test.inst=8           # calls setter  
+puts TestVar.cla  
+puts test.inst        # calls getter  
+other = TestVar.new(17)  
+puts other.inspect  
+puts TestVar.cla  
diff --git a/v4-cokapi/backends/ruby/tests/lambda-and-proc-2.golden b/v4-cokapi/backends/ruby/tests/lambda-and-proc-2.golden
new file mode 100644
index 000000000..59d60334a
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-and-proc-2.golden
@@ -0,0 +1,2772 @@
+{
+  "code": "# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/\n\ndef generic_return(code)\n  one, two    = 1, 2\n  three, four = code.call(one, two)\n  return \"Give me a #{three} and a #{four}\"\nend\n\nputs generic_return(lambda { |x, y| return x + 2, y + 2 })\n\nputs generic_return(Proc.new { |x, y| x + 2; y + 2 })\n\nputs generic_return(Proc.new { |x, y| [x + 2, y + 2] })\n\n# runtime error -- cannot have 'return' in here ...\nputs generic_return(Proc.new { |x, y| return x + 2, y + 2 })\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:3",
+          "frame_id": 2,
+          "unique_hash": "generic_return:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:4",
+          "frame_id": 2,
+          "unique_hash": "generic_return:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:6",
+          "frame_id": 2,
+          "unique_hash": "generic_return:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "three": 3,
+            "four": 4
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:7",
+          "frame_id": 2,
+          "unique_hash": "generic_return:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "three": 3,
+            "four": 4,
+            "__return__": "Give me a 3 and a 4"
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Lambda on line 9"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:3",
+          "frame_id": 2,
+          "unique_hash": "generic_return:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:4",
+          "frame_id": 2,
+          "unique_hash": "generic_return:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "call",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2,
+            "__return__": 4
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:6",
+          "frame_id": 2,
+          "unique_hash": "generic_return:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": 1,
+            "two": 2,
+            "three": 4,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "Give me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:7",
+          "frame_id": 2,
+          "unique_hash": "generic_return:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              13
+            ],
+            "one": 1,
+            "two": 2,
+            "three": 4,
+            "four": null,
+            "__return__": "Give me a 4 and a "
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "13": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          20
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "21": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          21
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:3",
+          "frame_id": 2,
+          "unique_hash": "generic_return:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "22": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          22
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:4",
+          "frame_id": 2,
+          "unique_hash": "generic_return:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "24": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          24
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "25": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          25
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:13",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "26": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          26
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:13",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "27": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          27
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "return",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:13",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:13_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2,
+            "__return__": [
+              "REF",
+              28
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "28": [
+          "LIST",
+          3,
+          4
+        ],
+        "29": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          29
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:6",
+          "frame_id": 2,
+          "unique_hash": "generic_return:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": 1,
+            "two": 2,
+            "three": 3,
+            "four": 4
+          }
+        }
+      ],
+      "heap": {
+        "30": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          30
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:7",
+          "frame_id": 2,
+          "unique_hash": "generic_return:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              23
+            ],
+            "one": 1,
+            "two": 2,
+            "three": 3,
+            "four": 4,
+            "__return__": "Give me a 3 and a 4"
+          }
+        }
+      ],
+      "heap": {
+        "31": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "23": [
+          "Proc",
+          "Proc on line 13"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          31
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "32": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          32
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:3",
+          "frame_id": 2,
+          "unique_hash": "generic_return:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "33": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          33
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:4",
+          "frame_id": 2,
+          "unique_hash": "generic_return:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": null,
+            "two": null,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "35": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          35
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        }
+      ],
+      "heap": {
+        "36": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          36
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "call",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:16",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:16_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "37": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          37
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:16",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:16_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "38": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          38
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "exception",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:16",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:16_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2
+          }
+        }
+      ],
+      "heap": {
+        "39": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          39
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ],
+      "exception_msg": "unexpected return"
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "return",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:16",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:16_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 1,
+            "y": 2,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "40": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          40
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "Give me a 3 and a 4\nGive me a 4 and a \nGive me a 3 and a 4\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "generic_return:5",
+          "frame_id": 2,
+          "unique_hash": "generic_return:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "three",
+            "four",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              34
+            ],
+            "one": 1,
+            "two": 2,
+            "three": null,
+            "four": null,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "41": [
+          "FUNCTION",
+          "generic_return",
+          ""
+        ],
+        "34": [
+          "Proc",
+          "Proc on line 16"
+        ]
+      },
+      "globals": {
+        "generic_return": [
+          "REF",
+          41
+        ]
+      },
+      "ordered_globals": [
+        "generic_return"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/lambda-and-proc-2.rb b/v4-cokapi/backends/ruby/tests/lambda-and-proc-2.rb
new file mode 100644
index 000000000..0a0521bb1
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-and-proc-2.rb
@@ -0,0 +1,16 @@
+# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/
+
+def generic_return(code)
+  one, two    = 1, 2
+  three, four = code.call(one, two)
+  return "Give me a #{three} and a #{four}"
+end
+
+puts generic_return(lambda { |x, y| return x + 2, y + 2 })
+
+puts generic_return(Proc.new { |x, y| x + 2; y + 2 })
+
+puts generic_return(Proc.new { |x, y| [x + 2, y + 2] })
+
+# runtime error -- cannot have 'return' in here ...
+puts generic_return(Proc.new { |x, y| return x + 2, y + 2 })
diff --git a/v4-cokapi/backends/ruby/tests/lambda-and-proc.golden b/v4-cokapi/backends/ruby/tests/lambda-and-proc.golden
new file mode 100644
index 000000000..ef07a4514
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-and-proc.golden
@@ -0,0 +1,1002 @@
+{
+  "code": "# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/\n\ndef args(code)\n  one, two = 1, 2\n  code.call(one, two)\nend\n\nargs(Proc.new{|a, b, c| puts \"Give me a #{a} and a #{b} and a #{c.class}\"})\n# lambdas check number of args while Procs don't\nargs(lambda{|a, b, c| puts \"Give me a #{a} and a #{b} and a #{c.class}\"})\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "args",
+          ""
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:3",
+          "frame_id": 2,
+          "unique_hash": "args:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": null,
+            "two": null
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:4",
+          "frame_id": 2,
+          "unique_hash": "args:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": null,
+            "two": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "a",
+            "b",
+            "c"
+          ],
+          "encoded_locals": {
+            "a": 1,
+            "b": 2,
+            "c": null
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "a",
+            "b",
+            "c"
+          ],
+          "encoded_locals": {
+            "a": 1,
+            "b": 2,
+            "c": null
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "return",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "a",
+            "b",
+            "c",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "a": 1,
+            "b": 2,
+            "c": null,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:6",
+          "frame_id": 2,
+          "unique_hash": "args:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              3
+            ],
+            "one": 1,
+            "two": 2,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 8"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "args",
+          ""
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:3",
+          "frame_id": 2,
+          "unique_hash": "args:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              12
+            ],
+            "one": null,
+            "two": null
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "12": [
+          "Proc",
+          "Lambda on line 10"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:4",
+          "frame_id": 2,
+          "unique_hash": "args:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              12
+            ],
+            "one": null,
+            "two": null
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "12": [
+          "Proc",
+          "Lambda on line 10"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              12
+            ],
+            "one": 1,
+            "two": 2
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "12": [
+          "Proc",
+          "Lambda on line 10"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "exception",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              12
+            ],
+            "one": 1,
+            "two": 2
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "12": [
+          "Proc",
+          "Lambda on line 10"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ],
+      "exception_msg": "wrong number of arguments (2 for 3)"
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "Give me a 1 and a 2 and a NilClass\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "args:5",
+          "frame_id": 2,
+          "unique_hash": "args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "code",
+            "one",
+            "two",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "code": [
+              "REF",
+              12
+            ],
+            "one": 1,
+            "two": 2,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "args",
+          ""
+        ],
+        "12": [
+          "Proc",
+          "Lambda on line 10"
+        ]
+      },
+      "globals": {
+        "args": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "args"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/lambda-and-proc.rb b/v4-cokapi/backends/ruby/tests/lambda-and-proc.rb
new file mode 100644
index 000000000..554307ffc
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-and-proc.rb
@@ -0,0 +1,10 @@
+# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/
+
+def args(code)
+  one, two = 1, 2
+  code.call(one, two)
+end
+
+args(Proc.new{|a, b, c| puts "Give me a #{a} and a #{b} and a #{c.class}"})
+# lambdas check number of args while Procs don't
+args(lambda{|a, b, c| puts "Give me a #{a} and a #{b} and a #{c.class}"})
diff --git a/v4-cokapi/backends/ruby/tests/lambda-scoping-2.golden b/v4-cokapi/backends/ruby/tests/lambda-scoping-2.golden
new file mode 100644
index 000000000..b965ebd3e
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-scoping-2.golden
@@ -0,0 +1,1418 @@
+{
+  "code": "# how does lexical scoping work for lambdas?\n\nx = 5\n\np = lambda {\n  puts x\n  x += 100 # can modify x in enclosing scope\n  puts x\n  puts 'end of p'\n}\n\ndef gimme\n  x = 10\n  print 'In gimme, x is '\n  puts x\n  yield\n  puts \"You're welcome.\"\n  print 'In gimme, x is '\n  puts x\nend\n\ngimme &p # use '&' to turn a lambda into a block\nprint 'In main, x is '\nputs x\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:12",
+          "frame_id": 2,
+          "unique_hash": "gimme:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:13",
+          "frame_id": 2,
+          "unique_hash": "gimme:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:14",
+          "frame_id": 2,
+          "unique_hash": "gimme:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "In gimme, x is ",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:15",
+          "frame_id": 2,
+          "unique_hash": "gimme:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "In gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:7",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:10_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:17",
+          "frame_id": 2,
+          "unique_hash": "gimme:17_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:18",
+          "frame_id": 2,
+          "unique_hash": "gimme:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is ",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:19",
+          "frame_id": 2,
+          "unique_hash": "gimme:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:20",
+          "frame_id": 2,
+          "unique_hash": "gimme:20_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 10,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\nIn main, x is ",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:24",
+          "frame_id": 1,
+          "unique_hash": "<main>:24_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\nIn main, x is 105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          20
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/lambda-scoping-2.rb b/v4-cokapi/backends/ruby/tests/lambda-scoping-2.rb
new file mode 100644
index 000000000..85feb8f85
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-scoping-2.rb
@@ -0,0 +1,24 @@
+# how does lexical scoping work for lambdas?
+
+x = 5
+
+p = lambda {
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts 'end of p'
+}
+
+def gimme
+  x = 10
+  print 'In gimme, x is '
+  puts x
+  yield
+  puts "You're welcome."
+  print 'In gimme, x is '
+  puts x
+end
+
+gimme &p # use '&' to turn a lambda into a block
+print 'In main, x is '
+puts x
diff --git a/v4-cokapi/backends/ruby/tests/lambda-scoping.golden b/v4-cokapi/backends/ruby/tests/lambda-scoping.golden
new file mode 100644
index 000000000..6960e6ba2
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-scoping.golden
@@ -0,0 +1,539 @@
+{
+  "code": "# how does lexical scoping work for lambdas?\n\nx = 5\n\np = lambda {\n  puts x\n  x += 100 # can modify x in enclosing scope\n  puts x\n  puts 'end of p'\n}\n\np.call\nputs x\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:5",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:6",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:7",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "5\n105\nend of p\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Lambda on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/lambda-scoping.rb b/v4-cokapi/backends/ruby/tests/lambda-scoping.rb
new file mode 100644
index 000000000..b6127a251
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/lambda-scoping.rb
@@ -0,0 +1,13 @@
+# how does lexical scoping work for lambdas?
+
+x = 5
+
+p = lambda {
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts 'end of p'
+}
+
+p.call
+puts x
diff --git a/v4-cokapi/backends/ruby/tests/megagreeter.golden b/v4-cokapi/backends/ruby/tests/megagreeter.golden
new file mode 100644
index 000000000..fffc1cab8
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/megagreeter.golden
@@ -0,0 +1,6465 @@
+{
+  "code": "# Adapted from Ruby in Twenty Minutes\n# https://www.ruby-lang.org/en/documentation/quickstart/3/\n\nclass MegaGreeter\n  attr_accessor :names\n\n  # Create the object\n  def initialize(names = \"World\")\n    @names = names\n  end\n\n  # Say hi to everybody\n  def say_hi\n    if @names.nil?\n      puts \"...\"\n    elsif @names.respond_to?(\"each\")\n      # @names is a list of some kind, iterate!\n      @names.each do |name|\n        puts \"Hello #{name}!\"\n      end\n    else\n      puts \"Hello #{@names}!\"\n    end\n  end\nend\n\n\nmg = MegaGreeter.new\nmg.say_hi\n\n# Change name to be \"Zeke\"\nmg.names = \"Zeke\"\nmg.say_hi\n\n# Change the name to an array of names\nmg.names = [\"Albert\", \"Brenda\", \"Charles\",\n  \"Dave\", \"Engelbert\"]\nmg.say_hi\n\n# Change to nil\nmg.names = nil\nmg.say_hi\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MegaGreeter>:4",
+          "frame_id": 2,
+          "unique_hash": "<class:MegaGreeter>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MegaGreeter>:5",
+          "frame_id": 2,
+          "unique_hash": "<class:MegaGreeter>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MegaGreeter>:8",
+          "frame_id": 2,
+          "unique_hash": "<class:MegaGreeter>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "3": [
+          "FUNCTION",
+          "names=",
+          ""
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MegaGreeter>:13",
+          "frame_id": 2,
+          "unique_hash": "<class:MegaGreeter>:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              4
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              6
+            ]
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "5": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "6": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 25,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<class:MegaGreeter>:25",
+          "frame_id": 2,
+          "unique_hash": "<class:MegaGreeter>:25_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              7
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              8
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              9
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              10
+            ]
+          ]
+        ],
+        "7": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "8": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "10": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 28,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              11
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              12
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              13
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              14
+            ]
+          ]
+        ],
+        "11": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "12": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "14": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:8",
+          "frame_id": 3,
+          "unique_hash": "initialize:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "names"
+          ],
+          "encoded_locals": {
+            "names": "World",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              15
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              16
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              17
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              18
+            ]
+          ]
+        ],
+        "15": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "17": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "18": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:9",
+          "frame_id": 3,
+          "unique_hash": "initialize:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "names"
+          ],
+          "encoded_locals": {
+            "names": "World",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              20
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              21
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              22
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              23
+            ]
+          ]
+        ],
+        "20": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "22": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:28",
+          "frame_id": 1,
+          "unique_hash": "<main>:28_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "initialize:10",
+          "frame_id": 3,
+          "unique_hash": "initialize:10_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "names",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "names": "World",
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": "World"
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              24
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              25
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              26
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              27
+            ]
+          ]
+        ],
+        "24": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "26": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "27": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 29,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              28
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              29
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              30
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              31
+            ]
+          ]
+        ],
+        "28": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "30": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:13",
+          "frame_id": 2,
+          "unique_hash": "say_hi:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              32
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              33
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              34
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              35
+            ]
+          ]
+        ],
+        "32": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "33": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "34": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:14",
+          "frame_id": 2,
+          "unique_hash": "say_hi:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              36
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              37
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              38
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              39
+            ]
+          ]
+        ],
+        "36": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "37": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "38": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "39": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:16",
+          "frame_id": 2,
+          "unique_hash": "say_hi:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              40
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              41
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              42
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              43
+            ]
+          ]
+        ],
+        "40": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "41": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "42": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "43": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:22",
+          "frame_id": 2,
+          "unique_hash": "say_hi:22_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              44
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              45
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              46
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              47
+            ]
+          ]
+        ],
+        "44": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "45": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "46": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "47": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "return",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:29",
+          "frame_id": 1,
+          "unique_hash": "<main>:29_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:24",
+          "frame_id": 2,
+          "unique_hash": "say_hi:24_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              48
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              49
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              50
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              51
+            ]
+          ]
+        ],
+        "48": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "49": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "50": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "51": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 32,
+      "event": "step_line",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:32",
+          "frame_id": 1,
+          "unique_hash": "<main>:32_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              52
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              53
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              54
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              55
+            ]
+          ]
+        ],
+        "52": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "53": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "54": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "55": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "World"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 33,
+      "event": "step_line",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              56
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              57
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              58
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              59
+            ]
+          ]
+        ],
+        "56": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "57": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "58": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "59": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:13",
+          "frame_id": 2,
+          "unique_hash": "say_hi:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              60
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              61
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              62
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              63
+            ]
+          ]
+        ],
+        "60": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "61": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "62": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "63": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:14",
+          "frame_id": 2,
+          "unique_hash": "say_hi:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              64
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              65
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              66
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              67
+            ]
+          ]
+        ],
+        "64": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "65": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "66": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "67": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:16",
+          "frame_id": 2,
+          "unique_hash": "say_hi:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              68
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              69
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              70
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              71
+            ]
+          ]
+        ],
+        "68": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "69": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "70": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "71": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "Hello World!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:22",
+          "frame_id": 2,
+          "unique_hash": "say_hi:22_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              72
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              73
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              74
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              75
+            ]
+          ]
+        ],
+        "72": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "73": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "74": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "75": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:33",
+          "frame_id": 1,
+          "unique_hash": "<main>:33_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:24",
+          "frame_id": 2,
+          "unique_hash": "say_hi:24_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              76
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              77
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              78
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              79
+            ]
+          ]
+        ],
+        "76": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "77": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "78": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "79": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 36,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:36",
+          "frame_id": 1,
+          "unique_hash": "<main>:36_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              80
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              81
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              82
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              83
+            ]
+          ]
+        ],
+        "80": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "81": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "82": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "83": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            "Zeke"
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 38,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              84
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              85
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              86
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              87
+            ]
+          ]
+        ],
+        "84": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "85": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "86": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "87": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:13",
+          "frame_id": 2,
+          "unique_hash": "say_hi:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              89
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              90
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              91
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              92
+            ]
+          ]
+        ],
+        "89": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "90": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "91": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "92": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:14",
+          "frame_id": 2,
+          "unique_hash": "say_hi:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              93
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              94
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              95
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              96
+            ]
+          ]
+        ],
+        "93": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "94": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "95": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "96": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:16",
+          "frame_id": 2,
+          "unique_hash": "say_hi:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              97
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              98
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              99
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              100
+            ]
+          ]
+        ],
+        "97": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "98": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "99": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "100": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              101
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              102
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              103
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              104
+            ]
+          ]
+        ],
+        "101": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "102": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "103": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "104": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:18",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:18_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Albert",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              105
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              106
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              107
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              108
+            ]
+          ]
+        ],
+        "105": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "106": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "107": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "108": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:19",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:19_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Albert",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              109
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              110
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              111
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              112
+            ]
+          ]
+        ],
+        "109": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "110": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "111": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "112": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:20",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "name": "Albert",
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              113
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              114
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              115
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              116
+            ]
+          ]
+        ],
+        "113": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "114": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "115": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "116": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:18",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:18_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Brenda",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              117
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              118
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              119
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              120
+            ]
+          ]
+        ],
+        "117": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "118": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "119": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "120": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:19",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:19_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Brenda",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              121
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              122
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              123
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              124
+            ]
+          ]
+        ],
+        "121": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "122": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "123": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "124": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:20",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "name": "Brenda",
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              125
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              126
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              127
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              128
+            ]
+          ]
+        ],
+        "125": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "126": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "127": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "128": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:18",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:18_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Charles",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              129
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              130
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              131
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              132
+            ]
+          ]
+        ],
+        "129": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "130": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "131": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "132": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:19",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:19_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Charles",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              133
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              134
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              135
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              136
+            ]
+          ]
+        ],
+        "133": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "134": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "135": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "136": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:20",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "name": "Charles",
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              137
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              138
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              139
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              140
+            ]
+          ]
+        ],
+        "137": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "138": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "139": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "140": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:18",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:18_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Dave",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              141
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              142
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              143
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              144
+            ]
+          ]
+        ],
+        "141": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "142": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "143": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "144": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:19",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:19_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Dave",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              145
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              146
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              147
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              148
+            ]
+          ]
+        ],
+        "145": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "146": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "147": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "148": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:20",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "name": "Dave",
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              149
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              150
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              151
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              152
+            ]
+          ]
+        ],
+        "149": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "150": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "151": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "152": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:18",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:18_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Engelbert",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              153
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              154
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              155
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              156
+            ]
+          ]
+        ],
+        "153": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "154": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "155": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "156": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:19",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:19_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name"
+          ],
+          "encoded_locals": {
+            "name": "Engelbert",
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              157
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              158
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              159
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              160
+            ]
+          ]
+        ],
+        "157": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "158": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "159": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "160": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "say_hi:18",
+          "frame_id": 2,
+          "unique_hash": "say_hi:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in say_hi:20",
+          "frame_id": 4,
+          "unique_hash": "block in say_hi:20_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "name",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "name": "Engelbert",
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              161
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              162
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              163
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              164
+            ]
+          ]
+        ],
+        "161": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "162": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "163": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "164": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:38",
+          "frame_id": 1,
+          "unique_hash": "<main>:38_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:24",
+          "frame_id": 2,
+          "unique_hash": "say_hi:24_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": [
+              "REF",
+              88
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ],
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              165
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              166
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              167
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              168
+            ]
+          ]
+        ],
+        "165": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "166": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "167": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "168": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 41,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:41",
+          "frame_id": 1,
+          "unique_hash": "<main>:41_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              169
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              170
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              171
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              172
+            ]
+          ]
+        ],
+        "169": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "170": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "171": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "172": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            [
+              "REF",
+              88
+            ]
+          ]
+        ],
+        "88": [
+          "LIST",
+          "Albert",
+          "Brenda",
+          "Charles",
+          "Dave",
+          "Engelbert"
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 42,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:42",
+          "frame_id": 1,
+          "unique_hash": "<main>:42_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              173
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              174
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              175
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              176
+            ]
+          ]
+        ],
+        "173": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "174": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "175": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "176": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            null
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "call",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:42",
+          "frame_id": 1,
+          "unique_hash": "<main>:42_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:13",
+          "frame_id": 2,
+          "unique_hash": "say_hi:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              177
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              178
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              179
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              180
+            ]
+          ]
+        ],
+        "177": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "178": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "179": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "180": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            null
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:42",
+          "frame_id": 1,
+          "unique_hash": "<main>:42_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:14",
+          "frame_id": 2,
+          "unique_hash": "say_hi:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              181
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              182
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              183
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              184
+            ]
+          ]
+        ],
+        "181": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "182": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "183": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "184": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            null
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:42",
+          "frame_id": 1,
+          "unique_hash": "<main>:42_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:15",
+          "frame_id": 2,
+          "unique_hash": "say_hi:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              185
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              186
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              187
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              188
+            ]
+          ]
+        ],
+        "185": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "186": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "187": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "188": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            null
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "return",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n...\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:42",
+          "frame_id": 1,
+          "unique_hash": "<main>:42_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "say_hi:24",
+          "frame_id": 2,
+          "unique_hash": "say_hi:24_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              19
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              189
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              190
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              191
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              192
+            ]
+          ]
+        ],
+        "189": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "190": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "191": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "192": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            null
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 42,
+      "event": "step_line",
+      "stdout": "Hello World!\nHello Zeke!\nHello Albert!\nHello Brenda!\nHello Charles!\nHello Dave!\nHello Engelbert!\n...\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:43",
+          "frame_id": 1,
+          "unique_hash": "<main>:43_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "mg"
+          ],
+          "encoded_locals": {
+            "mg": [
+              "REF",
+              19
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "CLASS",
+          "MegaGreeter",
+          [
+
+          ],
+          [
+            "names",
+            [
+              "REF",
+              193
+            ]
+          ],
+          [
+            "names=",
+            [
+              "REF",
+              194
+            ]
+          ],
+          [
+            "say_hi",
+            [
+              "REF",
+              195
+            ]
+          ],
+          [
+            "initialize [private]",
+            [
+              "REF",
+              196
+            ]
+          ]
+        ],
+        "193": [
+          "FUNCTION",
+          "names",
+          ""
+        ],
+        "194": [
+          "FUNCTION",
+          "names=",
+          ""
+        ],
+        "195": [
+          "FUNCTION",
+          "say_hi",
+          ""
+        ],
+        "196": [
+          "FUNCTION",
+          "initialize",
+          ""
+        ],
+        "19": [
+          "INSTANCE",
+          "MegaGreeter",
+          [
+            "@names",
+            null
+          ]
+        ]
+      },
+      "globals": {
+        "MegaGreeter": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "MegaGreeter"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/megagreeter.rb b/v4-cokapi/backends/ruby/tests/megagreeter.rb
new file mode 100644
index 000000000..d553835f0
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/megagreeter.rb
@@ -0,0 +1,42 @@
+# Adapted from Ruby in Twenty Minutes
+# https://www.ruby-lang.org/en/documentation/quickstart/3/
+
+class MegaGreeter
+  attr_accessor :names
+
+  # Create the object
+  def initialize(names = "World")
+    @names = names
+  end
+
+  # Say hi to everybody
+  def say_hi
+    if @names.nil?
+      puts "..."
+    elsif @names.respond_to?("each")
+      # @names is a list of some kind, iterate!
+      @names.each do |name|
+        puts "Hello #{name}!"
+      end
+    else
+      puts "Hello #{@names}!"
+    end
+  end
+end
+
+
+mg = MegaGreeter.new
+mg.say_hi
+
+# Change name to be "Zeke"
+mg.names = "Zeke"
+mg.say_hi
+
+# Change the name to an array of names
+mg.names = ["Albert", "Brenda", "Charles",
+  "Dave", "Engelbert"]
+mg.say_hi
+
+# Change to nil
+mg.names = nil
+mg.say_hi
diff --git a/v4-cokapi/backends/ruby/tests/method-alias.golden b/v4-cokapi/backends/ruby/tests/method-alias.golden
new file mode 100644
index 000000000..cdd20b46a
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-alias.golden
@@ -0,0 +1,1122 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\ndef greet\n  puts \"Hello!\"\nend\n\nalias greet2 greet\n\ngreet\ngreet2\nputs greet.object_id # odd ... actually runs the method before calling object_id\nputs greet2.object_id\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "greet",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "greet"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "3": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          2
+        ],
+        "greet2": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:3",
+          "frame_id": 2,
+          "unique_hash": "greet:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "5": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          4
+        ],
+        "greet2": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:4",
+          "frame_id": 2,
+          "unique_hash": "greet:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "7": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          6
+        ],
+        "greet2": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "Hello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:5",
+          "frame_id": 2,
+          "unique_hash": "greet:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "9": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          8
+        ],
+        "greet2": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "Hello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "11": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          10
+        ],
+        "greet2": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Hello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:3",
+          "frame_id": 2,
+          "unique_hash": "greet:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "13": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          12
+        ],
+        "greet2": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Hello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:4",
+          "frame_id": 2,
+          "unique_hash": "greet:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "15": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          14
+        ],
+        "greet2": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "Hello!\nHello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:5",
+          "frame_id": 2,
+          "unique_hash": "greet:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "17": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          16
+        ],
+        "greet2": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "Hello!\nHello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "19": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          18
+        ],
+        "greet2": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Hello!\nHello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:3",
+          "frame_id": 2,
+          "unique_hash": "greet:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "21": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          20
+        ],
+        "greet2": [
+          "REF",
+          21
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Hello!\nHello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:4",
+          "frame_id": 2,
+          "unique_hash": "greet:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "22": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "23": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          22
+        ],
+        "greet2": [
+          "REF",
+          23
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "Hello!\nHello!\nHello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:5",
+          "frame_id": 2,
+          "unique_hash": "greet:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "24": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "25": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          24
+        ],
+        "greet2": [
+          "REF",
+          25
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "Hello!\nHello!\nHello!\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "26": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "27": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          26
+        ],
+        "greet2": [
+          "REF",
+          27
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Hello!\nHello!\nHello!\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:3",
+          "frame_id": 2,
+          "unique_hash": "greet:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "28": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "29": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          28
+        ],
+        "greet2": [
+          "REF",
+          29
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Hello!\nHello!\nHello!\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:4",
+          "frame_id": 2,
+          "unique_hash": "greet:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "30": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "31": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          30
+        ],
+        "greet2": [
+          "REF",
+          31
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "Hello!\nHello!\nHello!\n8\nHello!\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "greet:5",
+          "frame_id": 2,
+          "unique_hash": "greet:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "32": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "33": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          32
+        ],
+        "greet2": [
+          "REF",
+          33
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "Hello!\nHello!\nHello!\n8\nHello!\n8\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "34": [
+          "FUNCTION",
+          "greet",
+          ""
+        ],
+        "35": [
+          "FUNCTION",
+          "greet2",
+          ""
+        ]
+      },
+      "globals": {
+        "greet": [
+          "REF",
+          34
+        ],
+        "greet2": [
+          "REF",
+          35
+        ]
+      },
+      "ordered_globals": [
+        "greet",
+        "greet2"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/method-alias.rb b/v4-cokapi/backends/ruby/tests/method-alias.rb
new file mode 100644
index 000000000..87b5e8815
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-alias.rb
@@ -0,0 +1,12 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+def greet
+  puts "Hello!"
+end
+
+alias greet2 greet
+
+greet
+greet2
+puts greet.object_id # odd ... actually runs the method before calling object_id
+puts greet2.object_id
diff --git a/v4-cokapi/backends/ruby/tests/method-basic.golden b/v4-cokapi/backends/ruby/tests/method-basic.golden
new file mode 100644
index 000000000..349b81433
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-basic.golden
@@ -0,0 +1,577 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\ndef repeat(word, times)\n  puts (word + ' ') * times\nend\n\nrepeat 'hello', 5\nrepeat 'goodbye', 3\nundef repeat\n# 'repeat' should no longer be in scope\nrepeat 'broken', 5\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "repeat:3",
+          "frame_id": 2,
+          "unique_hash": "repeat:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "word",
+            "times"
+          ],
+          "encoded_locals": {
+            "word": "hello",
+            "times": 5
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "repeat:4",
+          "frame_id": 2,
+          "unique_hash": "repeat:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "word",
+            "times"
+          ],
+          "encoded_locals": {
+            "word": "hello",
+            "times": 5
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "hello hello hello hello hello \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "repeat:5",
+          "frame_id": 2,
+          "unique_hash": "repeat:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "word",
+            "times",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "word": "hello",
+            "times": 5,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "hello hello hello hello hello \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "hello hello hello hello hello \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "repeat:3",
+          "frame_id": 2,
+          "unique_hash": "repeat:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "word",
+            "times"
+          ],
+          "encoded_locals": {
+            "word": "goodbye",
+            "times": 3
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "hello hello hello hello hello \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "repeat:4",
+          "frame_id": 2,
+          "unique_hash": "repeat:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "word",
+            "times"
+          ],
+          "encoded_locals": {
+            "word": "goodbye",
+            "times": 3
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "hello hello hello hello hello \ngoodbye goodbye goodbye \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "repeat:5",
+          "frame_id": 2,
+          "unique_hash": "repeat:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "word",
+            "times",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "word": "goodbye",
+            "times": 3,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "hello hello hello hello hello \ngoodbye goodbye goodbye \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "repeat",
+          ""
+        ]
+      },
+      "globals": {
+        "repeat": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "repeat"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "hello hello hello hello hello \ngoodbye goodbye goodbye \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "exception",
+      "stdout": "hello hello hello hello hello \ngoodbye goodbye goodbye \n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ],
+      "exception_msg": "undefined method `repeat' for main:Object"
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/method-basic.rb b/v4-cokapi/backends/ruby/tests/method-basic.rb
new file mode 100644
index 000000000..ee086e8ad
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-basic.rb
@@ -0,0 +1,11 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+def repeat(word, times)
+  puts (word + ' ') * times
+end
+
+repeat 'hello', 5
+repeat 'goodbye', 3
+undef repeat
+# 'repeat' should no longer be in scope
+repeat 'broken', 5
diff --git a/v4-cokapi/backends/ruby/tests/method-return.golden b/v4-cokapi/backends/ruby/tests/method-return.golden
new file mode 100644
index 000000000..9f6a5c452
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-return.golden
@@ -0,0 +1,713 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\ndef foo\n  'implicit return string'\nend\n\nx = foo\nputs x\n\ndef bar\n  'nop string'\n  return 'explicit return string'\nend\n\ny = bar\nputs y\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:3",
+          "frame_id": 2,
+          "unique_hash": "foo:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:4",
+          "frame_id": 2,
+          "unique_hash": "foo:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "foo:5",
+          "frame_id": 2,
+          "unique_hash": "foo:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": "implicit return string"
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "implicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "foo",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "foo"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "implicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "8": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          7
+        ],
+        "bar": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "foo",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "call",
+      "stdout": "implicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:10",
+          "frame_id": 2,
+          "unique_hash": "bar:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "10": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          9
+        ],
+        "bar": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "foo",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "implicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:12",
+          "frame_id": 2,
+          "unique_hash": "bar:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "12": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          11
+        ],
+        "bar": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "foo",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "return",
+      "stdout": "implicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "bar:13",
+          "frame_id": 2,
+          "unique_hash": "bar:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": "explicit return string"
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "14": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          13
+        ],
+        "bar": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "foo",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "implicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": "explicit return string"
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "16": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          15
+        ],
+        "bar": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "foo",
+        "bar"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "implicit return string\nexplicit return string\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": "implicit return string",
+            "y": "explicit return string"
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "foo",
+          ""
+        ],
+        "18": [
+          "FUNCTION",
+          "bar",
+          ""
+        ]
+      },
+      "globals": {
+        "foo": [
+          "REF",
+          17
+        ],
+        "bar": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "foo",
+        "bar"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/method-return.rb b/v4-cokapi/backends/ruby/tests/method-return.rb
new file mode 100644
index 000000000..e67e1814f
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-return.rb
@@ -0,0 +1,16 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+def foo
+  'implicit return string'
+end
+
+x = foo
+puts x
+
+def bar
+  'nop string'
+  return 'explicit return string'
+end
+
+y = bar
+puts y
diff --git a/v4-cokapi/backends/ruby/tests/method-varargs.golden b/v4-cokapi/backends/ruby/tests/method-varargs.golden
new file mode 100644
index 000000000..ef9cc3150
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-varargs.golden
@@ -0,0 +1,1287 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\ndef num_args(x, y, *args)\n  length = args.size\n  label = length == 1 ? \" vararg\" : \" varargs\"\n  length.to_s + label + \" ( \" + args.inspect + \" )\" # implicit return\nend\n\nputs num_args 'myX', 'myY'\nputs num_args 'myX', 'myY', 1\nputs num_args('myX', 'myY', 100, 2.5, \"three\")\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:3",
+          "frame_id": 2,
+          "unique_hash": "num_args:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              3
+            ],
+            "length": null,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "3": [
+          "LIST"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:4",
+          "frame_id": 2,
+          "unique_hash": "num_args:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              3
+            ],
+            "length": null,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "3": [
+          "LIST"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:5",
+          "frame_id": 2,
+          "unique_hash": "num_args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              3
+            ],
+            "length": 0,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "3": [
+          "LIST"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:6",
+          "frame_id": 2,
+          "unique_hash": "num_args:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              3
+            ],
+            "length": 0,
+            "label": " varargs"
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "3": [
+          "LIST"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:7",
+          "frame_id": 2,
+          "unique_hash": "num_args:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              3
+            ],
+            "length": 0,
+            "label": " varargs",
+            "__return__": "0 varargs ( [] )"
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "3": [
+          "LIST"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "0 varargs ( [] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:3",
+          "frame_id": 2,
+          "unique_hash": "num_args:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              10
+            ],
+            "length": null,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "10": [
+          "LIST",
+          1
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:4",
+          "frame_id": 2,
+          "unique_hash": "num_args:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              10
+            ],
+            "length": null,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "10": [
+          "LIST",
+          1
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:5",
+          "frame_id": 2,
+          "unique_hash": "num_args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              10
+            ],
+            "length": 1,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "10": [
+          "LIST",
+          1
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:6",
+          "frame_id": 2,
+          "unique_hash": "num_args:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              10
+            ],
+            "length": 1,
+            "label": " vararg"
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "10": [
+          "LIST",
+          1
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "0 varargs ( [] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:7",
+          "frame_id": 2,
+          "unique_hash": "num_args:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              10
+            ],
+            "length": 1,
+            "label": " vararg",
+            "__return__": "1 vararg ( [1] )"
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "10": [
+          "LIST",
+          1
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:3",
+          "frame_id": 2,
+          "unique_hash": "num_args:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              17
+            ],
+            "length": null,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "17": [
+          "LIST",
+          100,
+          2.5,
+          "three"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:4",
+          "frame_id": 2,
+          "unique_hash": "num_args:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              17
+            ],
+            "length": null,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "17": [
+          "LIST",
+          100,
+          2.5,
+          "three"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:5",
+          "frame_id": 2,
+          "unique_hash": "num_args:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              17
+            ],
+            "length": 3,
+            "label": null
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "17": [
+          "LIST",
+          100,
+          2.5,
+          "three"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:6",
+          "frame_id": 2,
+          "unique_hash": "num_args:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              17
+            ],
+            "length": 3,
+            "label": " varargs"
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "17": [
+          "LIST",
+          100,
+          2.5,
+          "three"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          20
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "return",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "num_args:7",
+          "frame_id": 2,
+          "unique_hash": "num_args:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y",
+            "args",
+            "length",
+            "label",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": "myX",
+            "y": "myY",
+            "args": [
+              "REF",
+              17
+            ],
+            "length": 3,
+            "label": " varargs",
+            "__return__": "3 varargs ( [100, 2.5, \"three\"] )"
+          }
+        }
+      ],
+      "heap": {
+        "21": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ],
+        "17": [
+          "LIST",
+          100,
+          2.5,
+          "three"
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          21
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "0 varargs ( [] )\n1 vararg ( [1] )\n3 varargs ( [100, 2.5, \"three\"] )\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "22": [
+          "FUNCTION",
+          "num_args",
+          ""
+        ]
+      },
+      "globals": {
+        "num_args": [
+          "REF",
+          22
+        ]
+      },
+      "ordered_globals": [
+        "num_args"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/method-varargs.rb b/v4-cokapi/backends/ruby/tests/method-varargs.rb
new file mode 100644
index 000000000..aa7ae065a
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/method-varargs.rb
@@ -0,0 +1,11 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+def num_args(x, y, *args)
+  length = args.size
+  label = length == 1 ? " vararg" : " varargs"
+  length.to_s + label + " ( " + args.inspect + " )" # implicit return
+end
+
+puts num_args 'myX', 'myY'
+puts num_args 'myX', 'myY', 1
+puts num_args('myX', 'myY', 100, 2.5, "three")
diff --git a/v4-cokapi/backends/ruby/tests/module-basic.golden b/v4-cokapi/backends/ruby/tests/module-basic.golden
new file mode 100644
index 000000000..d0988bfd0
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/module-basic.golden
@@ -0,0 +1,494 @@
+{
+  "code": "# adapted from http://ruby-doc.org/core-2.2.0/Module.html\nmodule Mod\n  include Math\n  CONST = 42\n  def meth\n    puts \"hello world\"\n  end\nend\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:Mod>:2",
+          "frame_id": 2,
+          "unique_hash": "<module:Mod>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "Mod": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mod"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:Mod>:3",
+          "frame_id": 2,
+          "unique_hash": "<module:Mod>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module"
+        ]
+      },
+      "globals": {
+        "Mod": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mod"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:Mod>:4",
+          "frame_id": 2,
+          "unique_hash": "<module:Mod>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "DomainError",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "PI",
+            3.141592653589793
+          ],
+          [
+            "E",
+            2.718281828459045
+          ]
+        ],
+        "2": [
+          "CLASS",
+          "Math::DomainError",
+          [
+            "StandardError"
+          ]
+        ]
+      },
+      "globals": {
+        "Mod": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mod"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:Mod>:5",
+          "frame_id": 2,
+          "unique_hash": "<module:Mod>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "CONST",
+            42
+          ],
+          [
+            "DomainError",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "PI",
+            3.141592653589793
+          ],
+          [
+            "E",
+            2.718281828459045
+          ]
+        ],
+        "2": [
+          "CLASS",
+          "Math::DomainError",
+          [
+            "StandardError"
+          ]
+        ]
+      },
+      "globals": {
+        "Mod": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mod"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "<module:Mod>:8",
+          "frame_id": 2,
+          "unique_hash": "<module:Mod>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "self"
+          ],
+          "encoded_locals": {
+            "self": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "CONST",
+            42
+          ],
+          [
+            "DomainError",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "PI",
+            3.141592653589793
+          ],
+          [
+            "E",
+            2.718281828459045
+          ],
+          [
+            "meth",
+            [
+              "REF",
+              3
+            ]
+          ]
+        ],
+        "2": [
+          "CLASS",
+          "Math::DomainError",
+          [
+            "StandardError"
+          ]
+        ],
+        "3": [
+          "FUNCTION",
+          "meth",
+          ""
+        ]
+      },
+      "globals": {
+        "Mod": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mod"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "INSTANCE",
+          "Module",
+          [
+            "CONST",
+            42
+          ],
+          [
+            "DomainError",
+            [
+              "REF",
+              2
+            ]
+          ],
+          [
+            "PI",
+            3.141592653589793
+          ],
+          [
+            "E",
+            2.718281828459045
+          ],
+          [
+            "meth",
+            [
+              "REF",
+              4
+            ]
+          ]
+        ],
+        "2": [
+          "CLASS",
+          "Math::DomainError",
+          [
+            "StandardError"
+          ]
+        ],
+        "4": [
+          "FUNCTION",
+          "meth",
+          ""
+        ]
+      },
+      "globals": {
+        "Mod": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "Mod"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/module-basic.rb b/v4-cokapi/backends/ruby/tests/module-basic.rb
new file mode 100644
index 000000000..a9fa3122d
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/module-basic.rb
@@ -0,0 +1,8 @@
+# adapted from http://ruby-doc.org/core-2.2.0/Module.html
+module Mod
+  include Math
+  CONST = 42
+  def meth
+    puts "hello world"
+  end
+end
diff --git a/v4-cokapi/backends/ruby/tests/proc-basic.golden b/v4-cokapi/backends/ruby/tests/proc-basic.golden
new file mode 100644
index 000000000..64b5a2af9
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-basic.golden
@@ -0,0 +1,2512 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\ncount = Proc.new {\n  [1,2,3,4,5].each {\n    |i| print i\n  }\n  puts\n}\n\nyour_proc = lambda { puts \"Lurch: 'You rang?'\" }\nmy_proc = proc { puts \"Morticia: 'Who was at the door, Lurch?'\" }\n\nputs count.class, your_proc.class, my_proc.class\n\ncount.call\nyour_proc.call\nmy_proc.call\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": null,
+            "your_proc": null,
+            "my_proc": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": null,
+            "my_proc": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:3",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:4",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 1
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n1",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "i": 1,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n1",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:4",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n1",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 2
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n12",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "i": 2,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n12",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:4",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 3
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n123",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "i": 3,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n123",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:4",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n123",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 4
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n1234",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "i": 4,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n1234",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:4",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n1234",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i"
+          ],
+          "encoded_locals": {
+            "i": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n12345",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block (2 levels) in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block (2 levels) in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "i",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "i": 5,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12345",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:7",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n12345\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12345\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n12345\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12345\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n12345\nLurch: 'You rang?'\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:16",
+          "frame_id": 1,
+          "unique_hash": "<main>:16_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12345\nLurch: 'You rang?'\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "call",
+      "stdout": "Proc\nProc\nProc\n12345\nLurch: 'You rang?'\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12345\nLurch: 'You rang?'\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "Proc\nProc\nProc\n12345\nLurch: 'You rang?'\nMorticia: 'Who was at the door, Lurch?'\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:17",
+          "frame_id": 1,
+          "unique_hash": "<main>:17_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:11_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "Proc\nProc\nProc\n12345\nLurch: 'You rang?'\nMorticia: 'Who was at the door, Lurch?'\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:18",
+          "frame_id": 1,
+          "unique_hash": "<main>:18_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "count",
+            "your_proc",
+            "my_proc"
+          ],
+          "encoded_locals": {
+            "count": [
+              "REF",
+              1
+            ],
+            "your_proc": [
+              "REF",
+              2
+            ],
+            "my_proc": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 3"
+        ],
+        "2": [
+          "Proc",
+          "Lambda on line 10"
+        ],
+        "3": [
+          "Proc",
+          "Proc on line 11"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/proc-basic.rb b/v4-cokapi/backends/ruby/tests/proc-basic.rb
new file mode 100644
index 000000000..073439b04
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-basic.rb
@@ -0,0 +1,17 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+count = Proc.new {
+  [1,2,3,4,5].each {
+    |i| print i
+  }
+  puts
+}
+
+your_proc = lambda { puts "Lurch: 'You rang?'" }
+my_proc = proc { puts "Morticia: 'Who was at the door, Lurch?'" }
+
+puts count.class, your_proc.class, my_proc.class
+
+count.call
+your_proc.call
+my_proc.call
diff --git a/v4-cokapi/backends/ruby/tests/proc-multiple.golden b/v4-cokapi/backends/ruby/tests/proc-multiple.golden
new file mode 100644
index 000000000..d17624a77
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-multiple.golden
@@ -0,0 +1,1477 @@
+{
+  "code": "# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/\n\ndef callbacks(procs)\n  procs[:starting].call\n\n  puts \"Still going\"\n\n  procs[:finishing].call\nend\n\nh = {:starting => Proc.new { puts \"Starting\" },\n     :finishing => Proc.new { puts \"Finishing\" }}\n\ncallbacks(h)\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "callbacks:3",
+          "frame_id": 2,
+          "unique_hash": "callbacks:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "callbacks:4",
+          "frame_id": 2,
+          "unique_hash": "callbacks:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "callbacks:4",
+          "frame_id": 2,
+          "unique_hash": "callbacks:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "callbacks:4",
+          "frame_id": 2,
+          "unique_hash": "callbacks:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "return",
+      "stdout": "Starting\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "callbacks:4",
+          "frame_id": 2,
+          "unique_hash": "callbacks:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:11",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:11_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "Starting\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "callbacks:6",
+          "frame_id": 2,
+          "unique_hash": "callbacks:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "Starting\nStill going\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "callbacks:8",
+          "frame_id": 2,
+          "unique_hash": "callbacks:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "Starting\nStill going\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "callbacks:8",
+          "frame_id": 2,
+          "unique_hash": "callbacks:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "Starting\nStill going\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "callbacks:8",
+          "frame_id": 2,
+          "unique_hash": "callbacks:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "return",
+      "stdout": "Starting\nStill going\nFinishing\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "callbacks:8",
+          "frame_id": 2,
+          "unique_hash": "callbacks:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:12",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:12_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "Starting\nStill going\nFinishing\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "callbacks:9",
+          "frame_id": 2,
+          "unique_hash": "callbacks:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "procs",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "procs": [
+              "REF",
+              3
+            ],
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "Starting\nStill going\nFinishing\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:15",
+          "frame_id": 1,
+          "unique_hash": "<main>:15_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "h"
+          ],
+          "encoded_locals": {
+            "h": [
+              "REF",
+              3
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "callbacks",
+          ""
+        ],
+        "3": [
+          "DICT",
+          [
+            [
+              "REF",
+              4
+            ],
+            [
+              "REF",
+              5
+            ]
+          ],
+          [
+            [
+              "REF",
+              6
+            ],
+            [
+              "REF",
+              7
+            ]
+          ]
+        ],
+        "4": [
+          "Symbol",
+          ":starting"
+        ],
+        "5": [
+          "Proc",
+          "Proc on line 11"
+        ],
+        "6": [
+          "Symbol",
+          ":finishing"
+        ],
+        "7": [
+          "Proc",
+          "Proc on line 12"
+        ]
+      },
+      "globals": {
+        "callbacks": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "callbacks"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/proc-multiple.rb b/v4-cokapi/backends/ruby/tests/proc-multiple.rb
new file mode 100644
index 000000000..f88f677ab
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-multiple.rb
@@ -0,0 +1,14 @@
+# Adapted from http://www.reactive.io/tips/2008/12/21/understanding-ruby-blocks-procs-and-lambdas/
+
+def callbacks(procs)
+  procs[:starting].call
+
+  puts "Still going"
+
+  procs[:finishing].call
+end
+
+h = {:starting => Proc.new { puts "Starting" },
+     :finishing => Proc.new { puts "Finishing" }}
+
+callbacks(h)
diff --git a/v4-cokapi/backends/ruby/tests/proc-return.golden b/v4-cokapi/backends/ruby/tests/proc-return.golden
new file mode 100644
index 000000000..ca54478af
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-return.golden
@@ -0,0 +1,1162 @@
+{
+  "code": "# adapted from http://eli.thegreenplace.net/2006/04/18/understanding-ruby-blocks-procs-and-methods/\n\ndef gen_times(factor)\n    return Proc.new {|n| n*factor }\nend\n\ntimes3 = gen_times(3)\ntimes5 = gen_times(5)\n\nputs times3.call(12)               #=> 36\nputs times5.call(5)                #=> 25\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": null,
+            "times5": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": null,
+            "times5": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": null,
+            "times5": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gen_times:3",
+          "frame_id": 2,
+          "unique_hash": "gen_times:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "factor"
+          ],
+          "encoded_locals": {
+            "factor": 3
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": null,
+            "times5": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gen_times:4",
+          "frame_id": 2,
+          "unique_hash": "gen_times:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "factor"
+          ],
+          "encoded_locals": {
+            "factor": 3
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": null,
+            "times5": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gen_times:5",
+          "frame_id": 2,
+          "unique_hash": "gen_times:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "factor",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "factor": 3,
+            "__return__": [
+              "REF",
+              4
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "5": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": null
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gen_times:3",
+          "frame_id": 2,
+          "unique_hash": "gen_times:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "factor"
+          ],
+          "encoded_locals": {
+            "factor": 5
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gen_times:4",
+          "frame_id": 2,
+          "unique_hash": "gen_times:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "factor"
+          ],
+          "encoded_locals": {
+            "factor": 5
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": null
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gen_times:5",
+          "frame_id": 2,
+          "unique_hash": "gen_times:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "factor",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "factor": 5,
+            "__return__": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "10": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in gen_times:4",
+          "frame_id": 3,
+          "unique_hash": "block in gen_times:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "parent:factor"
+          ],
+          "encoded_locals": {
+            "n": 12,
+            "parent:factor": 3
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in gen_times:4",
+          "frame_id": 3,
+          "unique_hash": "block in gen_times:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "parent:factor"
+          ],
+          "encoded_locals": {
+            "n": 12,
+            "parent:factor": 3
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in gen_times:4",
+          "frame_id": 3,
+          "unique_hash": "block in gen_times:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "parent:factor",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 12,
+            "parent:factor": 3,
+            "__return__": 36
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "36\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "call",
+      "stdout": "36\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in gen_times:4",
+          "frame_id": 3,
+          "unique_hash": "block in gen_times:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "parent:factor"
+          ],
+          "encoded_locals": {
+            "n": 5,
+            "parent:factor": 5
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "36\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in gen_times:4",
+          "frame_id": 3,
+          "unique_hash": "block in gen_times:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "parent:factor"
+          ],
+          "encoded_locals": {
+            "n": 5,
+            "parent:factor": 5
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "36\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in gen_times:4",
+          "frame_id": 3,
+          "unique_hash": "block in gen_times:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "parent:factor",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 5,
+            "parent:factor": 5,
+            "__return__": 25
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "36\n25\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "times3",
+            "times5"
+          ],
+          "encoded_locals": {
+            "times3": [
+              "REF",
+              4
+            ],
+            "times5": [
+              "REF",
+              9
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "gen_times",
+          ""
+        ],
+        "4": [
+          "Proc",
+          "Proc on line 4"
+        ],
+        "9": [
+          "Proc",
+          "Proc on line 4"
+        ]
+      },
+      "globals": {
+        "gen_times": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "gen_times"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/proc-return.rb b/v4-cokapi/backends/ruby/tests/proc-return.rb
new file mode 100644
index 000000000..e42c99b96
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-return.rb
@@ -0,0 +1,11 @@
+# adapted from http://eli.thegreenplace.net/2006/04/18/understanding-ruby-blocks-procs-and-methods/
+
+def gen_times(factor)
+    return Proc.new {|n| n*factor }
+end
+
+times3 = gen_times(3)
+times5 = gen_times(5)
+
+puts times3.call(12)               #=> 36
+puts times5.call(5)                #=> 25
diff --git a/v4-cokapi/backends/ruby/tests/proc-scoping-2.golden b/v4-cokapi/backends/ruby/tests/proc-scoping-2.golden
new file mode 100644
index 000000000..3518f6a9c
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-scoping-2.golden
@@ -0,0 +1,1418 @@
+{
+  "code": "# how does lexical scoping work for Procs?\n\nx = 5\n\np = Proc.new do\n  puts x\n  x += 100 # can modify x in enclosing scope\n  puts x\n  puts 'end of p'\nend\n\ndef gimme\n  x = 10\n  print 'In gimme, x is '\n  puts x\n  yield\n  puts \"You're welcome.\"\n  print 'In gimme, x is '\n  puts x\nend\n\ngimme &p # use '&' to turn a Proc into a block\nprint 'In main, x is '\nputs x\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 22,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:12",
+          "frame_id": 2,
+          "unique_hash": "gimme:12_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:13",
+          "frame_id": 2,
+          "unique_hash": "gimme:13_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": null
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 14,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:14",
+          "frame_id": 2,
+          "unique_hash": "gimme:14_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 15,
+      "event": "step_line",
+      "stdout": "In gimme, x is ",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:15",
+          "frame_id": 2,
+          "unique_hash": "gimme:15_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 16,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "In gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:5",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:5_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:6",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:6_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:7",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:8_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "gimme:16",
+          "frame_id": 2,
+          "unique_hash": "gimme:16_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 3,
+          "unique_hash": "block in <main>:10_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 17,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:17",
+          "frame_id": 2,
+          "unique_hash": "gimme:17_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 18,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:18",
+          "frame_id": 2,
+          "unique_hash": "gimme:18_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 19,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is ",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:19",
+          "frame_id": 2,
+          "unique_hash": "gimme:19_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x"
+          ],
+          "encoded_locals": {
+            "x": 10
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 20,
+      "event": "return",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:22",
+          "frame_id": 1,
+          "unique_hash": "<main>:22_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "gimme:20",
+          "frame_id": 2,
+          "unique_hash": "gimme:20_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "x": 10,
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 23,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:23",
+          "frame_id": 1,
+          "unique_hash": "<main>:23_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\nIn main, x is ",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:24",
+          "frame_id": 1,
+          "unique_hash": "<main>:24_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "19": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          19
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 24,
+      "event": "step_line",
+      "stdout": "In gimme, x is 10\n5\n105\nend of p\nYou're welcome.\nIn gimme, x is 10\nIn main, x is 105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:25",
+          "frame_id": 1,
+          "unique_hash": "<main>:25_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "20": [
+          "FUNCTION",
+          "gimme",
+          ""
+        ],
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+        "gimme": [
+          "REF",
+          20
+        ]
+      },
+      "ordered_globals": [
+        "gimme"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/proc-scoping-2.rb b/v4-cokapi/backends/ruby/tests/proc-scoping-2.rb
new file mode 100644
index 000000000..7658060b6
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-scoping-2.rb
@@ -0,0 +1,24 @@
+# how does lexical scoping work for Procs?
+
+x = 5
+
+p = Proc.new do
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts 'end of p'
+end
+
+def gimme
+  x = 10
+  print 'In gimme, x is '
+  puts x
+  yield
+  puts "You're welcome."
+  print 'In gimme, x is '
+  puts x
+end
+
+gimme &p # use '&' to turn a Proc into a block
+print 'In main, x is '
+puts x
diff --git a/v4-cokapi/backends/ruby/tests/proc-scoping.golden b/v4-cokapi/backends/ruby/tests/proc-scoping.golden
new file mode 100644
index 000000000..e0b848dda
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-scoping.golden
@@ -0,0 +1,539 @@
+{
+  "code": "# how does lexical scoping work for Procs?\n\nx = 5\n\np = Proc.new do\n  puts x\n  x += 100 # can modify x in enclosing scope\n  puts x\n  puts 'end of p'\nend\n\np.call\nputs x\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 12,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:5",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:5_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:6",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:6_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 5,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:7",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "5\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:8",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:8_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "5\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:9",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "return",
+      "stdout": "5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:10",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:10_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "5\n105\nend of p\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:13",
+          "frame_id": 1,
+          "unique_hash": "<main>:13_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 13,
+      "event": "step_line",
+      "stdout": "5\n105\nend of p\n105\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:14",
+          "frame_id": 1,
+          "unique_hash": "<main>:14_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "p"
+          ],
+          "encoded_locals": {
+            "x": 105,
+            "p": [
+              "REF",
+              1
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Proc",
+          "Proc on line 5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/proc-scoping.rb b/v4-cokapi/backends/ruby/tests/proc-scoping.rb
new file mode 100644
index 000000000..080238cde
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/proc-scoping.rb
@@ -0,0 +1,13 @@
+# how does lexical scoping work for Procs?
+
+x = 5
+
+p = Proc.new do
+  puts x
+  x += 100 # can modify x in enclosing scope
+  puts x
+  puts 'end of p'
+end
+
+p.call
+puts x
diff --git a/v4-cokapi/backends/ruby/tests/range-iterate.golden b/v4-cokapi/backends/ruby/tests/range-iterate.golden
new file mode 100644
index 000000000..df71d6c59
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/range-iterate.golden
@@ -0,0 +1,981 @@
+{
+  "code": "x = (1..5)\nfor i in x\n  print i\nend\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "i": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 1
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:2",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 1
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:3",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "1",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 1
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "1",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:2",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "1",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:3",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "12",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "12",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:2",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "12",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:3",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "123",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "123",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:2",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "123",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:3",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "1234",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "call",
+      "stdout": "1234",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:2",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:2_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "1234",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:3",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "return",
+      "stdout": "12345",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 5
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "block in <main>:4",
+          "frame_id": 2,
+          "unique_hash": "block in <main>:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "__return__"
+          ],
+          "encoded_locals": {
+            "__return__": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "12345",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "i"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "i": 5
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..5"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/range-iterate.rb b/v4-cokapi/backends/ruby/tests/range-iterate.rb
new file mode 100644
index 000000000..4f341cad3
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/range-iterate.rb
@@ -0,0 +1,4 @@
+x = (1..5)
+for i in x
+  print i
+end
diff --git a/v4-cokapi/backends/ruby/tests/range.golden b/v4-cokapi/backends/ruby/tests/range.golden
new file mode 100644
index 000000000..955d4d8ae
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/range.golden
@@ -0,0 +1,224 @@
+{
+  "code": "x = 1..3\ny = 'a'..'e'\nputs x\nputs y\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..3"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "y": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..3"
+        ],
+        "2": [
+          "Range",
+          "\"a\"..\"e\""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "1..3\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "y": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..3"
+        ],
+        "2": [
+          "Range",
+          "\"a\"..\"e\""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "1..3\na..e\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "y": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Range",
+          "1..3"
+        ],
+        "2": [
+          "Range",
+          "\"a\"..\"e\""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/range.rb b/v4-cokapi/backends/ruby/tests/range.rb
new file mode 100644
index 000000000..2398ca7a9
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/range.rb
@@ -0,0 +1,4 @@
+x = 1..3
+y = 'a'..'e'
+puts x
+puts y
diff --git a/v4-cokapi/backends/ruby/tests/recursive-fact.golden b/v4-cokapi/backends/ruby/tests/recursive-fact.golden
new file mode 100644
index 000000000..2a9fe7f33
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/recursive-fact.golden
@@ -0,0 +1,1444 @@
+{
+  "code": "# generic recursive factorial to test support for recursive calls\n\ndef fact n\n  if n <= 1\n    n\n  else\n    n * fact(n-1)\n  end\nend\n\nputs fact 4\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          1
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:3",
+          "frame_id": 2,
+          "unique_hash": "fact:3_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "2": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          2
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:4",
+          "frame_id": 2,
+          "unique_hash": "fact:4_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "3": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          3
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        }
+      ],
+      "heap": {
+        "4": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          4
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:3",
+          "frame_id": 3,
+          "unique_hash": "fact:3_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        }
+      ],
+      "heap": {
+        "5": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          5
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:4",
+          "frame_id": 3,
+          "unique_hash": "fact:4_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        }
+      ],
+      "heap": {
+        "6": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          6
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        }
+      ],
+      "heap": {
+        "7": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          7
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:3",
+          "frame_id": 4,
+          "unique_hash": "fact:3_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        }
+      ],
+      "heap": {
+        "8": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          8
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:4",
+          "frame_id": 4,
+          "unique_hash": "fact:4_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        }
+      ],
+      "heap": {
+        "9": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          9
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:7",
+          "frame_id": 4,
+          "unique_hash": "fact:7_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        }
+      ],
+      "heap": {
+        "10": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          10
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "call",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 4,
+          "unique_hash": "fact:7_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:3",
+          "frame_id": 5,
+          "unique_hash": "fact:3_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "11": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          11
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 4,
+          "unique_hash": "fact:7_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:4",
+          "frame_id": 5,
+          "unique_hash": "fact:4_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "12": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          12
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 4,
+          "unique_hash": "fact:7_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:5",
+          "frame_id": 5,
+          "unique_hash": "fact:5_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 1
+          }
+        }
+      ],
+      "heap": {
+        "13": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          13
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 4,
+          "unique_hash": "fact:7_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 2
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:9",
+          "frame_id": 5,
+          "unique_hash": "fact:9_f5",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 1,
+            "__return__": 1
+          }
+        }
+      ],
+      "heap": {
+        "14": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          14
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 3,
+          "unique_hash": "fact:7_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 3
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:9",
+          "frame_id": 4,
+          "unique_hash": "fact:9_f4",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 2,
+            "__return__": 2
+          }
+        }
+      ],
+      "heap": {
+        "15": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          15
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": false,
+          "func_name": "fact:7",
+          "frame_id": 2,
+          "unique_hash": "fact:7_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n"
+          ],
+          "encoded_locals": {
+            "n": 4
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:9",
+          "frame_id": 3,
+          "unique_hash": "fact:9_f3",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 3,
+            "__return__": 6
+          }
+        }
+      ],
+      "heap": {
+        "16": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          16
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "return",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": false,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        },
+        {
+          "is_highlighted": true,
+          "func_name": "fact:9",
+          "frame_id": 2,
+          "unique_hash": "fact:9_f2",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "n",
+            "__return__"
+          ],
+          "encoded_locals": {
+            "n": 4,
+            "__return__": 24
+          }
+        }
+      ],
+      "heap": {
+        "17": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          17
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "24\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+        "18": [
+          "FUNCTION",
+          "fact",
+          ""
+        ]
+      },
+      "globals": {
+        "fact": [
+          "REF",
+          18
+        ]
+      },
+      "ordered_globals": [
+        "fact"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/recursive-fact.rb b/v4-cokapi/backends/ruby/tests/recursive-fact.rb
new file mode 100644
index 000000000..fc63f6588
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/recursive-fact.rb
@@ -0,0 +1,11 @@
+# generic recursive factorial to test support for recursive calls
+
+def fact n
+  if n <= 1
+    n
+  else
+    n * fact(n-1)
+  end
+end
+
+puts fact 4
diff --git a/v4-cokapi/backends/ruby/tests/regexp.golden b/v4-cokapi/backends/ruby/tests/regexp.golden
new file mode 100644
index 000000000..0dd535bf1
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/regexp.golden
@@ -0,0 +1,128 @@
+{
+  "code": "x = /^<hello> (.*)$/\ny = Regexp.new('\\<d+> (\\d+)$')\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": null,
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "y": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Regexp",
+          "/^<hello> (.*)$/"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "x",
+            "y"
+          ],
+          "encoded_locals": {
+            "x": [
+              "REF",
+              1
+            ],
+            "y": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Regexp",
+          "/^<hello> (.*)$/"
+        ],
+        "2": [
+          "Regexp",
+          "/\\<d+> (\\d+)$/"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/regexp.rb b/v4-cokapi/backends/ruby/tests/regexp.rb
new file mode 100644
index 000000000..2af2ddeaf
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/regexp.rb
@@ -0,0 +1,2 @@
+x = /^<hello> (.*)$/
+y = Regexp.new('\<d+> (\d+)$')
diff --git a/v4-cokapi/backends/ruby/tests/symbols.golden b/v4-cokapi/backends/ruby/tests/symbols.golden
new file mode 100644
index 000000000..83d6eb951
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/symbols.golden
@@ -0,0 +1,423 @@
+{
+  "code": "# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly\n\nname = \"Matz\"\nname = name.to_sym\nname2 = :Matz.id2name\nputs name\nputs name2\n\nx = :\"Matz with spaces and !?!\"\nx2 = :\"Matz with spaces and !?!\"\nputs x.object_id == x2.object_id\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": null,
+            "name2": null,
+            "x": null,
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": "Matz",
+            "name2": null,
+            "x": null,
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": null,
+            "x": null,
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": "Matz",
+            "x": null,
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "Matz\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": "Matz",
+            "x": null,
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "Matz\nMatz\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": "Matz",
+            "x": null,
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "Matz\nMatz\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": "Matz",
+            "x": [
+              "REF",
+              2
+            ],
+            "x2": null
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ],
+        "2": [
+          "Symbol",
+          ":\"Matz with spaces and !?!\""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "Matz\nMatz\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": "Matz",
+            "x": [
+              "REF",
+              2
+            ],
+            "x2": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ],
+        "2": [
+          "Symbol",
+          ":\"Matz with spaces and !?!\""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 11,
+      "event": "step_line",
+      "stdout": "Matz\nMatz\ntrue\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:12",
+          "frame_id": 1,
+          "unique_hash": "<main>:12_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "name",
+            "name2",
+            "x",
+            "x2"
+          ],
+          "encoded_locals": {
+            "name": [
+              "REF",
+              1
+            ],
+            "name2": "Matz",
+            "x": [
+              "REF",
+              2
+            ],
+            "x2": [
+              "REF",
+              2
+            ]
+          }
+        }
+      ],
+      "heap": {
+        "1": [
+          "Symbol",
+          ":Matz"
+        ],
+        "2": [
+          "Symbol",
+          ":\"Matz with spaces and !?!\""
+        ]
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/symbols.rb b/v4-cokapi/backends/ruby/tests/symbols.rb
new file mode 100644
index 000000000..d7711471c
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/symbols.rb
@@ -0,0 +1,11 @@
+# Adapted from Learning Ruby by Michael Fitzgerald, O'Reilly
+
+name = "Matz"
+name = name.to_sym
+name2 = :Matz.id2name
+puts name
+puts name2
+
+x = :"Matz with spaces and !?!"
+x2 = :"Matz with spaces and !?!"
+puts x.object_id == x2.object_id
diff --git a/v4-cokapi/backends/ruby/tests/syntax-error-2.golden b/v4-cokapi/backends/ruby/tests/syntax-error-2.golden
new file mode 100644
index 000000000..37550a80f
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/syntax-error-2.golden
@@ -0,0 +1,10 @@
+{
+  "code": "def say_hi\n  if @names.nil?\n    puts \"...\"\n  else if @names.respond_to?(\"each\") # 'else if' is wrong\n    @names.each do |name|\n      puts \"Hello #{name}!\"\n    end\n  end\nend\n",
+  "trace": [
+    {
+      "event": "uncaught_exception",
+      "line": 10,
+      "exception_msg": "syntax error, unexpected end-of-input, expecting keyword_end"
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/syntax-error-2.rb b/v4-cokapi/backends/ruby/tests/syntax-error-2.rb
new file mode 100644
index 000000000..d386f6ba0
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/syntax-error-2.rb
@@ -0,0 +1,9 @@
+def say_hi
+  if @names.nil?
+    puts "..."
+  else if @names.respond_to?("each") # 'else if' is wrong
+    @names.each do |name|
+      puts "Hello #{name}!"
+    end
+  end
+end
diff --git a/v4-cokapi/backends/ruby/tests/syntax-error.golden b/v4-cokapi/backends/ruby/tests/syntax-error.golden
new file mode 100644
index 000000000..af0a870f1
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/syntax-error.golden
@@ -0,0 +1,10 @@
+{
+  "code": "x = 1\ny = 2\nz = 3x\nq = x + y\n",
+  "trace": [
+    {
+      "event": "uncaught_exception",
+      "line": 3,
+      "exception_msg": "syntax error, unexpected tIDENTIFIER, expecting end-of-input"
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/syntax-error.rb b/v4-cokapi/backends/ruby/tests/syntax-error.rb
new file mode 100644
index 000000000..4966e1f76
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/syntax-error.rb
@@ -0,0 +1,4 @@
+x = 1
+y = 2
+z = 3x
+q = x + y
diff --git a/v4-cokapi/backends/ruby/tests/toplevel-inst-class-vars.golden b/v4-cokapi/backends/ruby/tests/toplevel-inst-class-vars.golden
new file mode 100644
index 000000000..dd102cc47
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/toplevel-inst-class-vars.golden
@@ -0,0 +1,429 @@
+{
+  "code": "@x = 42\n@y = 'hello'\nputs @x\nputs @y\n@@classX = 'classy X'\n@@classY = 'classy Y'\nputs @@classX\nputs @@classY\nlocalX = 'local X'\nlocalY = 'local Y'\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42
+      },
+      "ordered_globals": [
+        "@x"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "42\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 5,
+      "event": "step_line",
+      "stdout": "42\nhello\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 6,
+      "event": "step_line",
+      "stdout": "42\nhello\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:6",
+          "frame_id": 1,
+          "unique_hash": "<main>:6_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@@classX": "classy X",
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@@classX",
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 7,
+      "event": "step_line",
+      "stdout": "42\nhello\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:7",
+          "frame_id": 1,
+          "unique_hash": "<main>:7_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@@classX": "classy X",
+        "@@classY": "classy Y",
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@@classX",
+        "@@classY",
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 8,
+      "event": "step_line",
+      "stdout": "42\nhello\nclassy X\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:8",
+          "frame_id": 1,
+          "unique_hash": "<main>:8_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@@classX": "classy X",
+        "@@classY": "classy Y",
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@@classX",
+        "@@classY",
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 9,
+      "event": "step_line",
+      "stdout": "42\nhello\nclassy X\nclassy Y\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:9",
+          "frame_id": 1,
+          "unique_hash": "<main>:9_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": null,
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@@classX": "classy X",
+        "@@classY": "classy Y",
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@@classX",
+        "@@classY",
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "42\nhello\nclassy X\nclassy Y\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:10",
+          "frame_id": 1,
+          "unique_hash": "<main>:10_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": "local X",
+            "localY": null
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@@classX": "classy X",
+        "@@classY": "classy Y",
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@@classX",
+        "@@classY",
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 10,
+      "event": "step_line",
+      "stdout": "42\nhello\nclassy X\nclassy Y\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:11",
+          "frame_id": 1,
+          "unique_hash": "<main>:11_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+            "localX",
+            "localY"
+          ],
+          "encoded_locals": {
+            "localX": "local X",
+            "localY": "local Y"
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@@classX": "classy X",
+        "@@classY": "classy Y",
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@@classX",
+        "@@classY",
+        "@x",
+        "@y"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/toplevel-inst-class-vars.rb b/v4-cokapi/backends/ruby/tests/toplevel-inst-class-vars.rb
new file mode 100644
index 000000000..655d276e2
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/toplevel-inst-class-vars.rb
@@ -0,0 +1,10 @@
+@x = 42
+@y = 'hello'
+puts @x
+puts @y
+@@classX = 'classy X'
+@@classY = 'classy Y'
+puts @@classX
+puts @@classY
+localX = 'local X'
+localY = 'local Y'
diff --git a/v4-cokapi/backends/ruby/tests/toplevel-inst-var.golden b/v4-cokapi/backends/ruby/tests/toplevel-inst-var.golden
new file mode 100644
index 000000000..743df08d2
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/toplevel-inst-var.golden
@@ -0,0 +1,170 @@
+{
+  "code": "@x = 42\n@y = 'hello'\nputs @x\nputs @y\n",
+  "trace": [
+    {
+      "func_name": "<toplevel>",
+      "line": 1,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:1",
+          "frame_id": 1,
+          "unique_hash": "<main>:1_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+      },
+      "ordered_globals": [
+
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 2,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:2",
+          "frame_id": 1,
+          "unique_hash": "<main>:2_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42
+      },
+      "ordered_globals": [
+        "@x"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 3,
+      "event": "step_line",
+      "stdout": "",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:3",
+          "frame_id": 1,
+          "unique_hash": "<main>:3_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "42\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:4",
+          "frame_id": 1,
+          "unique_hash": "<main>:4_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@x",
+        "@y"
+      ]
+    },
+    {
+      "func_name": "<toplevel>",
+      "line": 4,
+      "event": "step_line",
+      "stdout": "42\nhello\n",
+      "stack_to_render": [
+        {
+          "is_highlighted": true,
+          "func_name": "<main>:5",
+          "frame_id": 1,
+          "unique_hash": "<main>:5_f1",
+          "is_parent": false,
+          "is_zombie": false,
+          "parent_frame_id_list": [
+
+          ],
+          "ordered_varnames": [
+
+          ],
+          "encoded_locals": {
+          }
+        }
+      ],
+      "heap": {
+      },
+      "globals": {
+        "@x": 42,
+        "@y": "hello"
+      },
+      "ordered_globals": [
+        "@x",
+        "@y"
+      ]
+    }
+  ]
+}
diff --git a/v4-cokapi/backends/ruby/tests/toplevel-inst-var.rb b/v4-cokapi/backends/ruby/tests/toplevel-inst-var.rb
new file mode 100644
index 000000000..cde7b6af4
--- /dev/null
+++ b/v4-cokapi/backends/ruby/tests/toplevel-inst-var.rb
@@ -0,0 +1,4 @@
+@x = 42
+@y = 'hello'
+puts @x
+puts @y
diff --git a/v4-cokapi/cokapi.js b/v4-cokapi/cokapi.js
new file mode 100644
index 000000000..0d62d8092
--- /dev/null
+++ b/v4-cokapi/cokapi.js
@@ -0,0 +1,314 @@
+/*
+
+Online Python Tutor
+https://github.com/pgbovine/OnlinePythonTutor/
+
+Copyright (C) Philip J. Guo (philip@pgbovine.net)
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+*/
+
+// This is a nodejs server based on express that serves the v4-cokapi/ app
+// To test locally, run 'make' and load http://localhost:3000/
+
+// Run with an 'https' command-line flag to use https (must have
+// the proper certificate and key files, though)
+
+var IS_DEBUG = false;
+
+var PRODUCTION_PORT = 3000;
+var PRODUCTION_HTTPS_PORT = 8001;
+var DEBUG_PORT = 5001;
+
+// VERY IMPORTANT - turn on the sandbox when deploying online, or else
+// you'll be executing untrusted code on your server!
+var USE_DOCKER_SANDBOX = true;
+
+var assert = require('assert');
+var child_process = require('child_process');
+var express = require('express');
+var util = require('util');
+
+
+// We use this to execute since it supports utf8 and also an optional
+// timeout, but it needs the exact location of binaries because it doesn't
+// spawn a shell
+// http://nodejs.org/api/child_process.html#child_process_child_process_execfile_file_args_options_callback
+
+var NODE_BIN = '/usr/local/bin/node';
+var PYTHON2_BIN = '/usr/bin/python';
+var PYTHON3_BIN = '/usr/local/bin/python3.3';
+
+var TIMEOUT_SECS = 3;
+var JAVA_TIMEOUT_SECS = 15; // the Java backend is SUPER SLOW :/
+
+
+// bind() res and useJSONP before using
+function postExecHandler(res, useJSONP, err, stdout, stderr) {
+  if (err) {
+    console.log('postExecHandler', util.inspect(err, {depth: null}));
+    var errTrace;
+    if (err.killed) {
+      // timeout!
+      errTrace = {code: '', trace: [{'event': 'uncaught_exception',
+                                     'exception_msg': 'Timeout error. Your code ran for more than ' + TIMEOUT_SECS + ' seconds. Please shorten and try again.'}]};
+      if (useJSONP) {
+        res.jsonp(errTrace /* return an actual object, not a string */);
+      } else {
+        res.send(JSON.stringify(errTrace));
+      }
+    } else {
+      errTrace = {code: '', trace: [{'event': 'uncaught_exception',
+                                     'exception_msg': "Unknown error. Report a bug to philip@pgbovine.net by clicking on the\n'Generate URL' button at the bottom and including a URL in your email."}]};
+      if (useJSONP) {
+        res.jsonp(errTrace /* return an actual object, not a string */);
+      } else {
+        res.send(JSON.stringify(errTrace));
+      }
+    }
+  } else {
+    if (useJSONP) {
+      try {
+        // stdout better be real JSON, or we've got a problem!!!
+        var stdoutParsed = JSON.parse(stdout);
+        res.jsonp(stdoutParsed /* return an actual object, not a string */);
+      } catch(e) {
+        errTrace = {code: '', trace: [{'event': 'uncaught_exception',
+                                     'exception_msg': "Unknown error. Report a bug to philip@pgbovine.net by clicking on the\n'Generate URL' button at the bottom and including a URL in your email."}]};
+        res.jsonp(errTrace /* return an actual object, not a string */);
+      }
+    } else {
+      res.send(stdout);
+    }
+  }
+}
+
+
+var app = express();
+
+// http://ilee.co.uk/jsonp-in-express-nodejs/
+app.set("jsonp callback", true);
+
+app.get('/exec_py2', function(req, res) {
+  executePython('py2', req, res);
+});
+
+app.get('/exec_py3', function(req, res) {
+  executePython('py3', req, res);
+});
+
+app.get('/exec_js', exec_js_handler.bind(null, false, false));
+app.get('/exec_js_jsonp', exec_js_handler.bind(null, true, false));
+
+app.get('/exec_ts', exec_js_handler.bind(null, false, true));
+app.get('/exec_ts_jsonp', exec_js_handler.bind(null, true, true));
+
+function exec_js_handler(useJSONP /* use bind first */, isTypescript /* use bind first */, req, res) {
+  var usrCod = req.query.user_script;
+
+  var exeFile;
+  var args = [];
+
+  if (USE_DOCKER_SANDBOX) {
+    // this needs to match the docker setup in Dockerfile
+    exeFile = '/usr/bin/docker'; // absolute path to docker executable
+    args.push('run', '--rm', '--user=netuser', '--net=none', '--cap-drop', 'all', 'pgbovine/cokapi:v1',
+              'node',
+              '--expose-debug-as=Debug',
+              '/tmp/javascript/jslogger.js');
+  } else {
+    assert(false);
+    //exeFile = NODE_BIN;
+    //args.push('--expose-debug-as=Debug',
+    //          'backends/javascript/jslogger.js');
+  }
+  if (isTypescript) {
+    args.push('--typescript=true');
+  }
+  args.push('--jsondump=true');
+  args.push('--code=' + usrCod);
+
+  child_process.execFile(exeFile, args,
+                         {timeout: TIMEOUT_SECS * 1000 /* milliseconds */,
+                          maxBuffer: 5000 * 1024 /* 5MB data max */,
+                          // make SURE docker gets the kill signal;
+                          // this signal seems to allow docker to clean
+                          // up after itself to --rm the container, but
+                          // double-check with 'docker ps -a'
+                          killSignal: 'SIGINT'},
+                         postExecHandler.bind(null, res, useJSONP));
+}
+
+app.get('/exec_java', exec_java_handler.bind(null, false));
+app.get('/exec_java_jsonp', exec_java_handler.bind(null, true));
+
+// runs David Pritchard's Java backend in backends/java/
+function exec_java_handler(useJSONP /* use bind first */, req, res) {
+  var usrCod = req.query.user_script;
+
+  var parsedOptions = JSON.parse(req.query.options_json);
+  var heapPrimitives = parsedOptions.heap_primitives;
+
+  var exeFile;
+  var args = [];
+
+  var inputObj = {};
+  inputObj.usercode = usrCod;
+  // TODO: add options, arg, and stdin later ...
+  inputObj.options = {};
+  inputObj.args = [];
+  inputObj.stdin = "";
+
+  // VERY unintuitive -- to get strings to display as heap objects and
+  // NOT 'primitive' values in the Java backend, set showStringsAsValues
+  // to false
+  if (heapPrimitives) {
+    inputObj.options.showStringsAsValues = false;
+  }
+
+  var inputObjJSON = JSON.stringify(inputObj);
+
+  if (USE_DOCKER_SANDBOX) {
+    // this needs to match the docker setup in Dockerfile
+    exeFile = '/usr/bin/docker'; // absolute path to docker executable
+    args.push('run', '--rm', '--user=netuser', '--net=none', '--cap-drop', 'all', 'pgbovine/cokapi:v1',
+              '/tmp/run-java-backend.sh',
+              inputObjJSON);
+  } else {
+    assert(false);
+  }
+
+  child_process.execFile(exeFile, args,
+                         {timeout: JAVA_TIMEOUT_SECS * 1000 /* milliseconds */,
+                          maxBuffer: 5000 * 1024 /* 10MB data max */,
+                          // make SURE docker gets the kill signal;
+                          // this signal seems to allow docker to clean
+                          // up after itself to --rm the container, but
+                          // double-check with 'docker ps -a'
+                          killSignal: 'SIGINT'},
+                         postExecHandler.bind(null, res, useJSONP));
+}
+
+app.get('/exec_ruby', exec_ruby_handler.bind(null, false));
+app.get('/exec_ruby_jsonp', exec_ruby_handler.bind(null, true));
+
+function exec_ruby_handler(useJSONP /* use bind first */, req, res) {
+  var usrCod = req.query.user_script;
+
+  var exeFile;
+  var args = [];
+
+  if (USE_DOCKER_SANDBOX) {
+    // this needs to match the docker setup in Dockerfile
+    exeFile = '/usr/bin/docker'; // absolute path to docker executable
+    args.push('run', '--rm', '--user=netuser', '--net=none', '--cap-drop', 'all', 'pgbovine/cokapi:v1',
+              '/tmp/ruby/ruby',
+              '/tmp/ruby/pg_logger.rb',
+              '-c',
+              usrCod);
+  } else {
+    assert(false);
+    // must use Docker
+  }
+
+  child_process.execFile(exeFile, args,
+                         {timeout: TIMEOUT_SECS * 1000 /* milliseconds */,
+                          maxBuffer: 5000 * 1024 /* 5MB data max */,
+                          // make SURE docker gets the kill signal;
+                          // this signal seems to allow docker to clean
+                          // up after itself to --rm the container, but
+                          // double-check with 'docker ps -a'
+                          killSignal: 'SIGINT'},
+                         postExecHandler.bind(null, res, useJSONP));
+}
+
+function executePython(pyVer, req, res) {
+  var parsedOptions = JSON.parse(req.query.options_json);
+
+  var usrCod = req.query.user_script;
+  var usrInputJson = req.query.raw_input_json;
+  var cumulativeMode = parsedOptions.cumulative_mode;
+  var heapPrimitives = parsedOptions.heap_primitives;
+
+  var exeFile;
+  var args = [];
+
+  if (USE_DOCKER_SANDBOX) {
+    // this needs to match the docker setup in Dockerfile
+    exeFile = '/usr/bin/docker'; // absolute path to docker executable
+    args.push('run', '--rm', '--user=netuser', '--net=none', '--cap-drop', 'all', 'pgbovine/cokapi:v1',
+              (pyVer == 'py2' ? 'python' : 'python3'),
+              '/tmp/python/generate_json_trace.py');
+  } else {
+    assert(false);
+    //exeFile = (pyVer == 'py2' ? PYTHON2_BIN : PYTHON3_BIN);
+    //args.push('backends/python/generate_json_trace.py');
+  }
+
+  if (cumulativeMode) {
+    args.push('-c');
+  }
+  if (heapPrimitives) {
+    args.push('-p');
+  }
+  if (usrInputJson) {
+    args.push('--input=' + usrInputJson);
+  }
+  args.push('--code=' + usrCod);
+
+  child_process.execFile(exeFile, args,
+                         {timeout: TIMEOUT_SECS * 1000 /* milliseconds */,
+                          maxBuffer: 5000 * 1024 /* 5MB data max */,
+                          // make SURE docker gets the kill signal;
+                          // this signal seems to allow docker to clean
+                          // up after itself to --rm the container, but
+                          // double-check with 'docker ps -a'
+                          killSignal: 'SIGINT'},
+                         postExecHandler.bind(null, res, false));
+}
+
+// https support
+var https = require('https');
+var fs = require('fs');
+
+var options = {
+  key: fs.readFileSync('cokapi.com.key'),
+  cert: fs.readFileSync('cokapi.com-BUNDLE.crt')
+};
+
+var args = process.argv.slice(2);
+if (args.length > 0 && args[0] === 'https') {
+  var server = https.createServer(options, app).listen(
+    IS_DEBUG ? DEBUG_PORT : PRODUCTION_HTTPS_PORT,
+    function() {
+      var host = server.address().address;
+      var port = server.address().port;
+      console.log('https app listening at http://%s:%s', host, port);
+  });
+} else {
+  var server = app.listen(
+    IS_DEBUG ? DEBUG_PORT : PRODUCTION_PORT,
+    function() {
+      var host = server.address().address;
+      var port = server.address().port;
+      console.log('http app listening at http://%s:%s', host, port);
+  });
+}